diff --git a/Cargo.toml b/Cargo.toml
index 003be62a..2a5a939f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ edition = "2018"
 anyhow = "1.0"
 criterion = "0.3"
 getopts = "0.2"
-wast = "15.0.0"
+wast = { path = "../wat/crates/wast" }
 wat = "1.0.16"
 rayon = "1.3"
 
diff --git a/src/binary_reader.rs b/src/binary_reader.rs
index 1099f0bd..96377fb3 100644
--- a/src/binary_reader.rs
+++ b/src/binary_reader.rs
@@ -186,9 +186,8 @@ impl<'a> BinaryReader<'a> {
             -0x03 => Ok(Type::F32),
             -0x04 => Ok(Type::F64),
             -0x05 => Ok(Type::V128),
-            -0x10 => Ok(Type::AnyFunc),
-            -0x11 => Ok(Type::AnyRef),
-            -0x12 => Ok(Type::NullRef),
+            -0x10 => Ok(Type::FuncRef),
+            -0x11 => Ok(Type::ExternRef),
             -0x20 => Ok(Type::Func),
             -0x40 => Ok(Type::EmptyBlockType),
             _ => Err(BinaryReaderError::new(
@@ -984,7 +983,7 @@ impl<'a> BinaryReader<'a> {
                 let results = self.read_var_u32()?;
                 if results != 1 {
                     return Err(BinaryReaderError::new(
-                        "bad number of results",
+                        "invalid result arity",
                         self.position,
                     ));
                 }
@@ -1230,8 +1229,12 @@ impl<'a> BinaryReader<'a> {
             0xc3 => Operator::I64Extend16S,
             0xc4 => Operator::I64Extend32S,
 
-            0xd0 => Operator::RefNull,
-            0xd1 => Operator::RefIsNull,
+            0xd0 => Operator::RefNull {
+                ty: self.read_type()?,
+            },
+            0xd1 => Operator::RefIsNull {
+                ty: self.read_type()?,
+            },
             0xd2 => Operator::RefFunc {
                 function_index: self.read_var_u32()?,
             },
diff --git a/src/operators_validator.rs b/src/operators_validator.rs
index 70bf1d2e..93f51119 100644
--- a/src/operators_validator.rs
+++ b/src/operators_validator.rs
@@ -21,17 +21,6 @@ use crate::{
     WasmMemoryType, WasmModuleResources, WasmTableType, WasmType,
 };
 
-/// Test if `subtype` is a subtype of `supertype`.
-pub(crate) fn is_subtype_supertype(subtype: Type, supertype: Type) -> bool {
-    match supertype {
-        Type::AnyRef => {
-            subtype == Type::AnyRef || subtype == Type::AnyFunc || subtype == Type::NullRef
-        }
-        Type::AnyFunc => subtype == Type::AnyFunc || subtype == Type::NullRef,
-        _ => subtype == supertype,
-    }
-}
-
 #[derive(Debug)]
 struct BlockState {
     start_types: Vec<Type>,
@@ -79,10 +68,7 @@ impl FuncState {
             return true;
         }
         assert!(stack_starts_at + index < self.stack_types.len());
-        is_subtype_supertype(
-            self.stack_types[self.stack_types.len() - 1 - index],
-            expected,
-        )
+        self.stack_types[self.stack_types.len() - 1 - index] == expected
     }
     fn assert_block_stack_len(&self, depth: usize, minimal_len: usize) -> bool {
         assert!(depth < self.blocks.len());
@@ -364,7 +350,7 @@ pub(crate) fn check_value_type(
 ) -> OperatorValidatorResult<()> {
     match ty {
         Type::I32 | Type::I64 | Type::F32 | Type::F64 => Ok(()),
-        Type::NullRef | Type::AnyFunc | Type::AnyRef => {
+        Type::FuncRef | Type::ExternRef => {
             if !operator_config.enable_reference_types {
                 return Err(OperatorValidatorError::new(
                     "reference types support is not enabled",
@@ -784,7 +770,7 @@ impl OperatorValidator {
             | TypeOrFuncType::Type(Type::I64)
             | TypeOrFuncType::Type(Type::F32)
             | TypeOrFuncType::Type(Type::F64) => Ok(()),
-            TypeOrFuncType::Type(Type::AnyRef) | TypeOrFuncType::Type(Type::AnyFunc) => {
+            TypeOrFuncType::Type(Type::ExternRef) | TypeOrFuncType::Type(Type::FuncRef) => {
                 self.check_reference_types_enabled()
             }
             TypeOrFuncType::Type(Type::V128) => self.check_simd_enabled(),
@@ -879,10 +865,6 @@ impl OperatorValidator {
             ty
         };
 
-        if !ty.is_valid_for_old_select() {
-            return Err(OperatorValidatorError::new("invalid type for select"));
-        }
-
         Ok(Some(ty))
     }
 
@@ -1033,10 +1015,17 @@ impl OperatorValidator {
             }
             Operator::Select => {
                 let ty = self.check_select()?;
+                match ty {
+                    Some(Type::I32) | Some(Type::I64) | Some(Type::F32) | Some(Type::F64) => {}
+                    Some(_) => {
+                        bail_op_err!("type mismatch: only integer types allowed with bare `select`")
+                    }
+                    None => {}
+                }
                 self.func_state.change_frame_after_select(ty)?;
             }
             Operator::TypedSelect { ty } => {
-                self.check_operands_3(Type::I32, ty, ty)?;
+                self.check_operands_3(ty, ty, Type::I32)?;
                 self.func_state.change_frame_after_select(Some(ty))?;
             }
             Operator::LocalGet { local_index } => {
@@ -1608,13 +1597,29 @@ impl OperatorValidator {
                     ));
                 }
             }
-            Operator::RefNull => {
+            Operator::RefNull { ty } => {
                 self.check_reference_types_enabled()?;
-                self.func_state.change_frame_with_type(0, Type::NullRef)?;
+                match ty {
+                    Type::FuncRef | Type::ExternRef => {}
+                    _ => {
+                        return Err(OperatorValidatorError::new(
+                            "invalid reference type in ref.null",
+                        ))
+                    }
+                }
+                self.func_state.change_frame_with_type(0, ty)?;
             }
-            Operator::RefIsNull => {
+            Operator::RefIsNull { ty } => {
                 self.check_reference_types_enabled()?;
-                self.check_operands_1(Type::AnyRef)?;
+                match ty {
+                    Type::FuncRef | Type::ExternRef => {}
+                    _ => {
+                        return Err(OperatorValidatorError::new(
+                            "invalid reference type in ref.is_null",
+                        ))
+                    }
+                }
+                self.check_operands_1(ty)?;
                 self.func_state.change_frame_with_type(1, Type::I32)?;
             }
             Operator::RefFunc { function_index } => {
@@ -1624,7 +1629,7 @@ impl OperatorValidator {
                         "unknown function: function index out of bounds",
                     ));
                 }
-                self.func_state.change_frame_with_type(0, Type::AnyFunc)?;
+                self.func_state.change_frame_with_type(0, Type::FuncRef)?;
             }
             Operator::V128Load { memarg } => {
                 self.check_simd_enabled()?;
@@ -1966,9 +1971,7 @@ impl OperatorValidator {
             Operator::DataDrop { segment } => {
                 self.check_bulk_memory_enabled()?;
                 if segment >= resources.data_count() {
-                    return Err(OperatorValidatorError::new(
-                        "unknown data segment: segment index out of bounds",
-                    ));
+                    bail_op_err!("unknown data segment {}", segment);
                 }
             }
             Operator::MemoryCopy | Operator::MemoryFill => {
@@ -1993,7 +1996,7 @@ impl OperatorValidator {
                         segment
                     ),
                 };
-                if !is_subtype_supertype(segment_ty, table.element_type().to_parser_type()) {
+                if segment_ty != table.element_type().to_parser_type() {
                     return Err(OperatorValidatorError::new("type mismatch"));
                 }
                 self.check_operands_3(Type::I32, Type::I32, Type::I32)?;
@@ -2021,10 +2024,7 @@ impl OperatorValidator {
                         (Some(a), Some(b)) => (a, b),
                         _ => return Err(OperatorValidatorError::new("table index out of bounds")),
                     };
-                if !is_subtype_supertype(
-                    src.element_type().to_parser_type(),
-                    dst.element_type().to_parser_type(),
-                ) {
+                if src.element_type().to_parser_type() != dst.element_type().to_parser_type() {
                     return Err(OperatorValidatorError::new("type mismatch"));
                 }
                 self.check_operands_3(Type::I32, Type::I32, Type::I32)?;
diff --git a/src/primitives.rs b/src/primitives.rs
index 02c7d9b6..d55dd350 100644
--- a/src/primitives.rs
+++ b/src/primitives.rs
@@ -107,22 +107,12 @@ pub enum Type {
     F32,
     F64,
     V128,
-    AnyFunc,
-    AnyRef,
-    NullRef,
+    FuncRef,
+    ExternRef,
     Func,
     EmptyBlockType,
 }
 
-impl Type {
-    pub(crate) fn is_valid_for_old_select(self) -> bool {
-        match self {
-            Type::I32 | Type::I64 | Type::F32 | Type::F64 => true,
-            _ => false,
-        }
-    }
-}
-
 /// Either a value type or a function type.
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub enum TypeOrFuncType {
@@ -321,8 +311,8 @@ pub enum Operator<'a> {
     I64Const { value: i64 },
     F32Const { value: Ieee32 },
     F64Const { value: Ieee64 },
-    RefNull,
-    RefIsNull,
+    RefNull { ty: Type },
+    RefIsNull { ty: Type },
     RefFunc { function_index: u32 },
     I32Eqz,
     I32Eq,
diff --git a/src/readers/element_section.rs b/src/readers/element_section.rs
index 9a2a2d67..f94cb8d0 100644
--- a/src/readers/element_section.rs
+++ b/src/readers/element_section.rs
@@ -45,7 +45,7 @@ pub struct ElementItems<'a> {
 
 #[derive(Debug)]
 pub enum ElementItem {
-    Null,
+    Null(Type),
     Func(u32),
 }
 
@@ -91,7 +91,7 @@ impl<'a> ElementItemsReader<'a> {
         if self.exprs {
             let offset = self.reader.original_position();
             let ret = match self.reader.read_operator()? {
-                Operator::RefNull => ElementItem::Null,
+                Operator::RefNull { ty } => ElementItem::Null(ty),
                 Operator::RefFunc { function_index } => ElementItem::Func(function_index),
                 _ => return Err(BinaryReaderError::new("invalid passive segment", offset)),
             };
@@ -229,7 +229,7 @@ impl<'a> ElementSectionReader<'a> {
                 self.reader.read_type()?
             } else {
                 match self.reader.read_external_kind()? {
-                    ExternalKind::Function => Type::AnyFunc,
+                    ExternalKind::Function => Type::FuncRef,
                     _ => {
                         return Err(BinaryReaderError::new(
                             "only the function external type is supported in elem segment",
@@ -239,7 +239,7 @@ impl<'a> ElementSectionReader<'a> {
                 }
             }
         } else {
-            Type::AnyFunc
+            Type::FuncRef
         };
         let data_start = self.reader.position;
         let items_count = self.reader.read_var_u32()?;
diff --git a/src/validator.rs b/src/validator.rs
index 3eafc346..6b2ec95b 100644
--- a/src/validator.rs
+++ b/src/validator.rs
@@ -30,8 +30,8 @@ use crate::primitives::{
 };
 
 use crate::operators_validator::{
-    check_value_type, is_subtype_supertype, FunctionEnd, OperatorValidator,
-    OperatorValidatorConfig, OperatorValidatorError, DEFAULT_OPERATOR_VALIDATOR_CONFIG,
+    check_value_type, FunctionEnd, OperatorValidator, OperatorValidatorConfig,
+    OperatorValidatorError, DEFAULT_OPERATOR_VALIDATOR_CONFIG,
 };
 use crate::parser::{Parser, ParserInput, ParserState, WasmDecoder};
 use crate::{ElemSectionEntryTable, ElementItem};
@@ -251,7 +251,7 @@ impl<'a> ValidatingParser<'a> {
 
     fn check_table_type(&self, table_type: &TableType) -> ValidatorResult<'a, ()> {
         match table_type.element_type {
-            Type::AnyFunc => {}
+            Type::FuncRef => {}
             _ => {
                 if !self.config.operator_config.enable_reference_types {
                     return self.create_error("element is not anyfunc");
@@ -332,11 +332,11 @@ impl<'a> ValidatingParser<'a> {
             Operator::I64Const { .. } => Type::I64,
             Operator::F32Const { .. } => Type::F32,
             Operator::F64Const { .. } => Type::F64,
-            Operator::RefNull => {
+            Operator::RefNull { ty } => {
                 if !self.config.operator_config.enable_reference_types {
                     return self.create_error("reference types support is not enabled");
                 }
-                Type::NullRef
+                ty
             }
             Operator::V128Const { .. } => {
                 if !self.config.operator_config.enable_simd {
@@ -358,14 +358,14 @@ impl<'a> ValidatingParser<'a> {
                         function_index
                     ));
                 }
-                Type::AnyFunc
+                Type::FuncRef
             }
             _ => {
                 return self
                     .create_error("constant expression required: invalid init_expr operator")
             }
         };
-        if !is_subtype_supertype(ty, state.ty) {
+        if ty != state.ty {
             return self.create_error("type mismatch: invalid init_expr type");
         }
         Ok(())
@@ -566,7 +566,7 @@ impl<'a> ValidatingParser<'a> {
                                 return;
                             }
                         };
-                        if !is_subtype_supertype(ty, table.element_type) {
+                        if ty != table.element_type {
                             self.set_validation_error("element_type != table type");
                             return;
                         }
@@ -584,9 +584,19 @@ impl<'a> ValidatingParser<'a> {
                         }
                     }
                 }
-                if !self.config.operator_config.enable_reference_types && ty != Type::AnyFunc {
-                    self.set_validation_error("element_type != anyfunc is not supported yet");
-                    return;
+                match ty {
+                    Type::FuncRef => {}
+                    Type::ExternRef if self.config.operator_config.enable_reference_types => {}
+                    Type::ExternRef => {
+                        self.set_validation_error(
+                            "reference types must be enabled for anyref elem segment",
+                        );
+                        return;
+                    }
+                    _ => {
+                        self.set_validation_error("invalid reference type");
+                        return;
+                    }
                 }
             }
             ParserState::ElementSectionEntryBody(ref indices) => {
diff --git a/tests/all.rs b/tests/all.rs
index 964ddc72..47ece144 100644
--- a/tests/all.rs
+++ b/tests/all.rs
@@ -164,6 +164,10 @@ fn validate_not_deterministic(wasm: &[u8], mut _config: ValidatingParserConfig)
 }
 
 fn run_wast(filename: &Path, wast: &[u8]) -> Result<()> {
+    if skip_wast_test(filename, 0) {
+        return Ok(());
+    }
+
     let contents = str::from_utf8(wast)?;
     let buf = wast::parser::ParseBuffer::new(&contents).map_err(|mut e| {
         e.set_path(filename);
@@ -246,21 +250,19 @@ fn skip_wast_test(filename: &Path, line: usize) -> bool {
             || line == 1651;
     }
 
-    // uses an old error message and we're waiting for repo to update
-    if filename.ends_with("reference-types/memory_init.wast") {
-        return line == 188;
-    }
-
-    // TODO: need to implement these
-    if filename.ends_with("reference-types/select.wast")
-        || filename.ends_with("reference-types/table_init.wast")
-        || filename.ends_with("reference-types/br_table.wast")
-        || filename.ends_with("reference-types/binary.wast")
-        || filename.ends_with("reference-types/ref_func.wast")
+    // waiting to be updated for `ref.null` syntax and binary usage
+    if filename.ends_with("bulk-memory-operations/elem.wast")
+        || filename.ends_with("bulk-memory-operations/bulk.wast")
+        || filename.ends_with("bulk-memory-operations/binary.wast")
     {
         return true;
     }
 
+    // Waiting for WebAssembly/reference-types#76 to get resolved
+    if filename.ends_with("ref_func.wast") {
+        return line == 77 || line == 81;
+    }
+
     false
 }
 
@@ -347,6 +349,7 @@ fn find_tests() -> Vec<(Test, PathBuf)> {
         }
     };
     push_wast("tests/wast");
+    push_wast("tests/wast/reference-types");
     push_wast("testsuite");
     push_wast("testsuite/proposals/multi-value");
     push_wast("testsuite/proposals/bulk-memory-operations");
@@ -355,7 +358,6 @@ fn find_tests() -> Vec<(Test, PathBuf)> {
     push_wast("testsuite/proposals/nontrapping-float-to-int-conversions");
     push_wast("testsuite/proposals/threads");
     push_wast("testsuite/proposals/simd");
-    push_wast("testsuite/proposals/reference-types");
 
     return tests;
 }
diff --git a/tests/ref.wasm b/tests/ref.wasm
deleted file mode 100644
index 25143835..00000000
Binary files a/tests/ref.wasm and /dev/null differ
diff --git a/tests/ref.wat b/tests/ref.wat
new file mode 100644
index 00000000..bcc944b0
--- /dev/null
+++ b/tests/ref.wat
@@ -0,0 +1,17 @@
+(module
+  (type (;0;) (func))
+  (type (;1;) (func (param funcref)))
+  (func (;0;) (type 0)
+    (local externref funcref)
+    ref.null extern
+    local.set 0
+    ref.null func
+    local.set 1)
+  (func (;1;) (type 1) (param funcref)
+    global.get 0
+    ref.is_null extern
+    drop
+    local.get 0
+    ref.is_null func
+    drop)
+  (global (;0;) externref (ref.null extern)))
diff --git a/tests/wast/reference-types/binary.wast b/tests/wast/reference-types/binary.wast
new file mode 100644
index 00000000..4b00271d
--- /dev/null
+++ b/tests/wast/reference-types/binary.wast
@@ -0,0 +1,1525 @@
+(module binary "\00asm\01\00\00\00")
+(module binary "\00asm" "\01\00\00\00")
+(module $M1 binary "\00asm\01\00\00\00")
+(module $M2 binary "\00asm" "\01\00\00\00")
+
+(assert_malformed (module binary "") "unexpected end")
+(assert_malformed (module binary "\01") "unexpected end")
+(assert_malformed (module binary "\00as") "unexpected end")
+(assert_malformed (module binary "asm\00") "magic header not detected")
+(assert_malformed (module binary "msa\00") "magic header not detected")
+(assert_malformed (module binary "msa\00\01\00\00\00") "magic header not detected")
+(assert_malformed (module binary "msa\00\00\00\00\01") "magic header not detected")
+(assert_malformed (module binary "asm\01\00\00\00\00") "magic header not detected")
+(assert_malformed (module binary "wasm\01\00\00\00") "magic header not detected")
+(assert_malformed (module binary "\7fasm\01\00\00\00") "magic header not detected")
+(assert_malformed (module binary "\80asm\01\00\00\00") "magic header not detected")
+(assert_malformed (module binary "\82asm\01\00\00\00") "magic header not detected")
+(assert_malformed (module binary "\ffasm\01\00\00\00") "magic header not detected")
+
+;; 8-byte endian-reversed.
+(assert_malformed (module binary "\00\00\00\01msa\00") "magic header not detected")
+
+;; Middle-endian byte orderings.
+(assert_malformed (module binary "a\00ms\00\01\00\00") "magic header not detected")
+(assert_malformed (module binary "sm\00a\00\00\01\00") "magic header not detected")
+
+;; Upper-cased.
+(assert_malformed (module binary "\00ASM\01\00\00\00") "magic header not detected")
+
+;; EBCDIC-encoded magic.
+(assert_malformed (module binary "\00\81\a2\94\01\00\00\00") "magic header not detected")
+
+;; Leading UTF-8 BOM.
+(assert_malformed (module binary "\ef\bb\bf\00asm\01\00\00\00") "magic header not detected")
+
+;; Malformed binary version.
+(assert_malformed (module binary "\00asm") "unexpected end")
+(assert_malformed (module binary "\00asm\01") "unexpected end")
+(assert_malformed (module binary "\00asm\01\00\00") "unexpected end")
+(assert_malformed (module binary "\00asm\00\00\00\00") "unknown binary version")
+(assert_malformed (module binary "\00asm\0d\00\00\00") "unknown binary version")
+(assert_malformed (module binary "\00asm\0e\00\00\00") "unknown binary version")
+(assert_malformed (module binary "\00asm\00\01\00\00") "unknown binary version")
+(assert_malformed (module binary "\00asm\00\00\01\00") "unknown binary version")
+(assert_malformed (module binary "\00asm\00\00\00\01") "unknown binary version")
+
+;; Unsigned LEB128 can have non-minimal length
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\05\04\01"                          ;; Memory section with 1 entry
+  "\00\82\00"                          ;; no max, minimum 2
+)
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\05\07\01"                          ;; Memory section with 1 entry
+  "\00\82\80\80\80\00"                 ;; no max, minimum 2
+)
+
+;; Signed LEB128 can have non-minimal length
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\07\01"                          ;; Global section with 1 entry
+  "\7f\00"                             ;; i32, immutable
+  "\41\80\00"                          ;; i32.const 0
+  "\0b"                                ;; end
+)
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\07\01"                          ;; Global section with 1 entry
+  "\7f\00"                             ;; i32, immutable
+  "\41\ff\7f"                          ;; i32.const -1
+  "\0b"                                ;; end
+)
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\0a\01"                          ;; Global section with 1 entry
+  "\7f\00"                             ;; i32, immutable
+  "\41\80\80\80\80\00"                 ;; i32.const 0
+  "\0b"                                ;; end
+)
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\0a\01"                          ;; Global section with 1 entry
+  "\7f\00"                             ;; i32, immutable
+  "\41\ff\ff\ff\ff\7f"                 ;; i32.const -1
+  "\0b"                                ;; end
+)
+
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\07\01"                          ;; Global section with 1 entry
+  "\7e\00"                             ;; i64, immutable
+  "\42\80\00"                          ;; i64.const 0 with unused bits set
+  "\0b"                                ;; end
+)
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\07\01"                          ;; Global section with 1 entry
+  "\7e\00"                             ;; i64, immutable
+  "\42\ff\7f"                          ;; i64.const -1 with unused bits unset
+  "\0b"                                ;; end
+)
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\0f\01"                          ;; Global section with 1 entry
+  "\7e\00"                             ;; i64, immutable
+  "\42\80\80\80\80\80\80\80\80\80\00"  ;; i64.const 0 with unused bits set
+  "\0b"                                ;; end
+)
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\0f\01"                          ;; Global section with 1 entry
+  "\7e\00"                             ;; i64, immutable
+  "\42\ff\ff\ff\ff\ff\ff\ff\ff\ff\7f"  ;; i64.const -1 with unused bits unset
+  "\0b"                                ;; end
+)
+
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\05\03\01"                          ;; Memory section with 1 entry
+  "\00\00"                             ;; no max, minimum 0
+  "\0b\06\01"                          ;; Data section with 1 entry
+  "\00"                                ;; Memory index 0
+  "\41\00\0b\00"                       ;; (i32.const 0) with contents ""
+)
+
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\04\04\01"                          ;; Table section with 1 entry
+  "\70\00\00"                          ;; no max, minimum 0, funcref
+  "\09\06\01"                          ;; Element section with 1 entry
+  "\00"                                ;; Table index 0
+  "\41\00\0b\00"                       ;; (i32.const 0) with no elements
+)
+
+;; Data segment memory index can have non-minimal length
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\05\03\01"                          ;; Memory section with 1 entry
+  "\00\00"                             ;; no max, minimum 0
+  "\0b\07\01"                          ;; Data section with 1 entry
+  "\80\00"                             ;; Memory index 0, encoded with 2 bytes
+  "\41\00\0b\00"                       ;; (i32.const 0) with contents ""
+)
+
+;; Element segment table index can have non-minimal length
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\04\04\01"                          ;; Table section with 1 entry
+  "\70\00\00"                          ;; no max, minimum 0, funcref
+  "\09\09\01"                          ;; Element section with 1 entry
+  "\02\80\00"                          ;; Table index 0, encoded with 2 bytes
+  "\41\00\0b\00\00"                    ;; (i32.const 0) with no elements
+)
+
+;; Unsigned LEB128 must not be overlong
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\08\01"                          ;; Memory section with 1 entry
+    "\00\82\80\80\80\80\00"              ;; no max, minimum 2 with one byte too many
+  )
+  "integer representation too long"
+)
+
+;; Signed LEB128 must not be overlong
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0b\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\80\80\80\80\80\00"              ;; i32.const 0 with one byte too many
+    "\0b"                                ;; end
+  )
+  "integer representation too long"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0b\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\ff\ff\ff\ff\ff\7f"              ;; i32.const -1 with one byte too many
+    "\0b"                                ;; end
+  )
+  "integer representation too long"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\10\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\80\80\80\80\80\80\80\80\80\80\00"  ;; i64.const 0 with one byte too many
+    "\0b"                                ;; end
+  )
+  "integer representation too long"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\10\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\ff\ff\ff\ff\ff\ff\ff\ff\ff\ff\7f"  ;; i64.const -1 with one byte too many
+    "\0b"                                ;; end
+  )
+  "integer representation too long"
+)
+
+;; Unsigned LEB128s zero-extend
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\07\01"                          ;; Memory section with 1 entry
+    "\00\82\80\80\80\70"                 ;; no max, minimum 2 with unused bits set
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\07\01"                          ;; Memory section with 1 entry
+    "\00\82\80\80\80\40"                 ;; no max, minimum 2 with some unused bits set
+  )
+  "integer too large"
+)
+
+;; Signed LEB128s sign-extend
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0a\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\80\80\80\80\70"                 ;; i32.const 0 with unused bits set
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0a\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\ff\ff\ff\ff\0f"                 ;; i32.const -1 with unused bits unset
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0a\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\80\80\80\80\1f"                 ;; i32.const 0 with some unused bits set
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0a\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\ff\ff\ff\ff\4f"                 ;; i32.const -1 with some unused bits unset
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0f\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\80\80\80\80\80\80\80\80\80\7e"  ;; i64.const 0 with unused bits set
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0f\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\ff\ff\ff\ff\ff\ff\ff\ff\ff\01"  ;; i64.const -1 with unused bits unset
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0f\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\80\80\80\80\80\80\80\80\80\02"  ;; i64.const 0 with some unused bits set
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0f\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\ff\ff\ff\ff\ff\ff\ff\ff\ff\41"  ;; i64.const -1 with some unused bits unset
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+
+
+;; Unsigned LEB128 must not be overlong
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\08\01"                          ;; Memory section with 1 entry
+    "\00\82\80\80\80\80\00"              ;; no max, minimum 2 with one byte too many
+  )
+  "integer representation too long"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\11\01"                ;; Code section
+    ;; function 0
+    "\0f\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\28"                      ;; i32.load
+    "\02"                      ;; alignment 2
+    "\82\80\80\80\80\00"       ;; offset 2 with one byte too many
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "integer representation too long"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\11\01"                ;; Code section
+    ;; function 0
+    "\0f\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\28"                      ;; i32.load
+    "\82\80\80\80\80\00"       ;; alignment 2 with one byte too many
+    "\00"                      ;; offset 0
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "integer representation too long"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\12\01"                ;; Code section
+    ;; function 0
+    "\10\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\41\03"                   ;; i32.const 3
+    "\36"                      ;; i32.store
+    "\82\80\80\80\80\00"       ;; alignment 2 with one byte too many
+    "\03"                      ;; offset 3
+    "\0b"                      ;; end
+  )
+  "integer representation too long"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\12\01"                ;; Code section
+    ;; function 0
+    "\10\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\41\03"                   ;; i32.const 3
+    "\36"                      ;; i32.store
+    "\02"                      ;; alignment 2
+    "\82\80\80\80\80\00"       ;; offset 2 with one byte too many
+    "\0b"                      ;; end
+  )
+  "integer representation too long"
+)
+
+;; Signed LEB128 must not be overlong
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0b\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\80\80\80\80\80\00"              ;; i32.const 0 with one byte too many
+    "\0b"                                ;; end
+  )
+  "integer representation too long"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0b\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\ff\ff\ff\ff\ff\7f"              ;; i32.const -1 with one byte too many
+    "\0b"                                ;; end
+  )
+  "integer representation too long"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\10\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\80\80\80\80\80\80\80\80\80\80\00"  ;; i64.const 0 with one byte too many
+    "\0b"                                ;; end
+  )
+  "integer representation too long"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\10\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\ff\ff\ff\ff\ff\ff\ff\ff\ff\ff\7f"  ;; i64.const -1 with one byte too many
+    "\0b"                                ;; end
+  )
+  "integer representation too long"
+)
+
+;; Unsigned LEB128s zero-extend
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\07\01"                          ;; Memory section with 1 entry
+    "\00\82\80\80\80\70"                 ;; no max, minimum 2 with unused bits set
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\07\01"                          ;; Memory section with 1 entry
+    "\00\82\80\80\80\40"                 ;; no max, minimum 2 with some unused bits set
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\10\01"                ;; Code section
+    ;; function 0
+    "\0e\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\28"                      ;; i32.load
+    "\02"                      ;; alignment 2
+    "\82\80\80\80\10"          ;; offset 2 with unused bits set
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\10\01"                ;; Code section
+    ;; function 0
+    "\0e\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\28"                      ;; i32.load
+    "\02"                      ;; alignment 2
+    "\82\80\80\80\40"          ;; offset 2 with some unused bits set
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\10\01"                ;; Code section
+    "\0e\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\28"                      ;; i32.load
+    "\82\80\80\80\10"          ;; alignment 2 with unused bits set
+    "\00"                      ;; offset 0
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\10\01"                ;; Code section
+    ;; function 0
+    "\0e\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\28"                      ;; i32.load
+    "\82\80\80\80\40"          ;; alignment 2 with some unused bits set
+    "\00"                      ;; offset 0
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\11\01"                ;; Code section
+    ;; function 0
+    "\0f\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\41\03"                   ;; i32.const 3
+    "\36"                      ;; i32.store
+    "\82\80\80\80\10"          ;; alignment 2 with unused bits set
+    "\03"                      ;; offset 3
+    "\0b"                      ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\11\01"                ;; Code section
+    ;; function 0
+    "\0f\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\41\03"                   ;; i32.const 3
+    "\36"                      ;; i32.store
+    "\82\80\80\80\40"          ;; alignment 2 with some unused bits set
+    "\03"                      ;; offset 3
+    "\0b"                      ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\11\01"                ;; Code section
+    ;; function 0
+    "\0f\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\41\03"                   ;; i32.const 3
+    "\36"                      ;; i32.store
+    "\03"                      ;; alignment 2
+    "\82\80\80\80\10"          ;; offset 2 with unused bits set
+    "\0b"                      ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\01"          ;; Memory section
+    "\0a\11\01"                ;; Code section
+
+    ;; function 0
+    "\0f\01\01"                ;; local type count
+    "\7f"                      ;; i32
+    "\41\00"                   ;; i32.const 0
+    "\41\03"                   ;; i32.const 3
+    "\36"                      ;; i32.store
+    "\02"                      ;; alignment 2
+    "\82\80\80\80\40"          ;; offset 2 with some unused bits set
+    "\0b"                      ;; end
+  )
+  "integer too large"
+)
+
+;; Signed LEB128s sign-extend
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0a\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\80\80\80\80\70"                 ;; i32.const 0 with unused bits set
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0a\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\ff\ff\ff\ff\0f"                 ;; i32.const -1 with unused bits unset
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0a\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\80\80\80\80\1f"                 ;; i32.const 0 with some unused bits set
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0a\01"                          ;; Global section with 1 entry
+    "\7f\00"                             ;; i32, immutable
+    "\41\ff\ff\ff\ff\4f"                 ;; i32.const -1 with some unused bits unset
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0f\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\80\80\80\80\80\80\80\80\80\7e"  ;; i64.const 0 with unused bits set
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0f\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\ff\ff\ff\ff\ff\ff\ff\ff\ff\01"  ;; i64.const -1 with unused bits unset
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0f\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\80\80\80\80\80\80\80\80\80\02"  ;; i64.const 0 with some unused bits set
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0f\01"                          ;; Global section with 1 entry
+    "\7e\00"                             ;; i64, immutable
+    "\42\ff\ff\ff\ff\ff\ff\ff\ff\ff\41"  ;; i64.const -1 with some unused bits unset
+    "\0b"                                ;; end
+  )
+  "integer too large"
+)
+
+;; memory.grow reserved byte equal to zero.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\09\01"                ;; Code section
+
+    ;; function 0
+    "\07\00"
+    "\41\00"                   ;; i32.const 0
+    "\40"                      ;; memory.grow
+    "\01"                      ;; memory.grow reserved byte is not equal to zero!
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+;; memory.grow reserved byte should not be a "long" LEB128 zero.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\0a\01"                ;; Code section
+
+    ;; function 0
+    "\08\00"
+    "\41\00"                   ;; i32.const 0
+    "\40"                      ;; memory.grow
+    "\80\00"                   ;; memory.grow reserved byte
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+;; Same as above for 3, 4, and 5-byte zero encodings.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\0b\01"                ;; Code section
+
+    ;; function 0
+    "\09\00"
+    "\41\00"                   ;; i32.const 0
+    "\40"                      ;; memory.grow
+    "\80\80\00"                ;; memory.grow reserved byte
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\0c\01"                ;; Code section
+
+    ;; function 0
+    "\0a\00"
+    "\41\00"                   ;; i32.const 0
+    "\40"                      ;; memory.grow
+    "\80\80\80\00"             ;; memory.grow reserved byte
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\0d\01"                ;; Code section
+
+    ;; function 0
+    "\0b\00"
+    "\41\00"                   ;; i32.const 0
+    "\40"                      ;; memory.grow
+    "\80\80\80\80\00"          ;; memory.grow reserved byte
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+;; memory.size reserved byte equal to zero.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\07\01"                ;; Code section
+
+    ;; function 0
+    "\05\00"
+    "\3f"                      ;; memory.size
+    "\01"                      ;; memory.size reserved byte is not equal to zero!
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+;; memory.size reserved byte should not be a "long" LEB128 zero.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\08\01"                ;; Code section
+
+    ;; function 0
+    "\06\00"
+    "\3f"                      ;; memory.size
+    "\80\00"                   ;; memory.size reserved byte
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+;; Same as above for 3, 4, and 5-byte zero encodings.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\09\01"                ;; Code section
+
+    ;; function 0
+    "\07\00"
+    "\3f"                      ;; memory.size
+    "\80\80\00"                ;; memory.size reserved byte
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\0a\01"                ;; Code section
+
+    ;; function 0
+    "\08\00"
+    "\3f"                      ;; memory.size
+    "\80\80\80\00"             ;; memory.size reserved byte
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\0b\01"                ;; Code section
+
+    ;; function 0
+    "\09\00"
+    "\3f"                      ;; memory.size
+    "\80\80\80\80\00"          ;; memory.size reserved byte
+    "\1a"                      ;; drop
+    "\0b"                      ;; end
+  )
+  "zero flag expected"
+)
+
+;; No more than 2^32 locals.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\0a\0c\01"                ;; Code section
+
+    ;; function 0
+    "\0a\02"
+    "\ff\ff\ff\ff\0f\7f"       ;; 0xFFFFFFFF i32
+    "\02\7e"                   ;; 0x00000002 i64
+    "\0b"                      ;; end
+  )
+  "too many locals"
+)
+
+;; Local count can be 0.
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\01\04\01\60\00\00"     ;; Type section
+  "\03\02\01\00"           ;; Function section
+  "\0a\0a\01"              ;; Code section
+
+  ;; function 0
+  "\08\03"
+  "\00\7f"                 ;; 0 i32
+  "\00\7e"                 ;; 0 i64
+  "\02\7d"                 ;; 2 f32
+  "\0b"                    ;; end
+)
+
+;; Function section has non-zero count, but code section is absent.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"  ;; Type section
+    "\03\03\02\00\00"     ;; Function section with 2 functions
+  )
+  "function and code section have inconsistent lengths"
+)
+
+;; Code section has non-zero count, but function section is absent.
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\0a\04\01\02\00\0b"  ;; Code section with 1 empty function
+  )
+  "function and code section have inconsistent lengths"
+)
+
+;; Function section count > code section count
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"  ;; Type section
+    "\03\03\02\00\00"     ;; Function section with 2 functions
+    "\0a\04\01\02\00\0b"  ;; Code section with 1 empty function
+  )
+  "function and code section have inconsistent lengths"
+)
+
+;; Function section count < code section count
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"           ;; Type section
+    "\03\02\01\00"                 ;; Function section with 1 function
+    "\0a\07\02\02\00\0b\02\00\0b"  ;; Code section with 2 empty functions
+  )
+  "function and code section have inconsistent lengths"
+)
+
+;; Function section has zero count, and code section is absent.
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\03\01\00"  ;; Function section with 0 functions
+)
+
+;; Code section has zero count, and function section is absent.
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\0a\01\00"  ;; Code section with 0 functions
+)
+
+;; Fewer passive segments than datacount
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\0c\01\03"                   ;; Datacount section with value "3"
+    "\0b\05\02"                   ;; Data section with two entries
+    "\01\00"                      ;; Passive data section
+    "\01\00")                     ;; Passive data section
+  "data count and data section have inconsistent lengths")
+
+;; More passive segments than datacount
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\0c\01\01"                   ;; Datacount section with value "1"
+    "\0b\05\02"                   ;; Data section with two entries
+    "\01\00"                      ;; Passive data section
+    "\01\00")                     ;; Passive data section
+  "data count and data section have inconsistent lengths")
+
+;; memory.init requires a datacount section
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\0e\01"                ;; Code section
+
+    ;; function 0
+    "\0c\00"
+    "\41\00"                   ;; zero args
+    "\41\00"
+    "\41\00"
+    "\fc\08\00\00"             ;; memory.init
+    "\0b"
+
+    "\0b\03\01\01\00"          ;; Data section
+  )                            ;; end
+  "data count section required")
+
+;; data.drop requires a datacount section
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\05\03\01\00\00"          ;; Memory section
+    "\0a\07\01"                ;; Code section
+
+    ;; function 0
+    "\05\00"
+    "\fc\09\00"                ;; data.drop
+    "\0b"
+
+    "\0b\03\01\01\00"          ;; Data section
+  )                            ;; end
+  "data count section required")
+
+;; passive element segment containing opcode other than ref.func or ref.null
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+
+    "\01\04\01\60\00\00"       ;; Type section
+
+    "\03\02\01\00"             ;; Function section
+
+    "\04\04\01"                ;; Table section with 1 entry
+    "\70\00\00"                ;; no max, minimum 0, funcref
+
+    "\05\03\01\00\00"          ;; Memory section
+
+    "\09\07\01"                ;; Element section with one segment
+    "\05\70"                   ;; Passive, funcref
+    "\01"                      ;; 1 element
+    "\d3\00\0b"                ;; bad opcode, index 0, end
+
+    "\0a\04\01"                ;; Code section
+
+    ;; function 0
+    "\02\00"
+    "\0b")                     ;; end
+  "illegal opcode")
+
+;; passive element segment containing type other than funcref
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+
+    "\01\04\01\60\00\00"       ;; Type section
+
+    "\03\02\01\00"             ;; Function section
+
+    "\04\04\01"                ;; Table section with 1 entry
+    "\70\00\00"                ;; no max, minimum 0, funcref
+
+    "\05\03\01\00\00"          ;; Memory section
+
+    "\09\07\01"                ;; Element section with one segment
+    "\05\7f"                   ;; Passive, i32
+    "\01"                      ;; 1 element
+    "\d2\00\0b"                ;; ref.func, index 0, end
+
+    "\0a\04\01"                ;; Code section
+
+    ;; function 0
+    "\02\00"
+    "\0b")                     ;; end
+  "malformed reference type")
+
+;; passive element segment containing opcode ref.func
+(module binary
+  "\00asm" "\01\00\00\00"
+
+  "\01\04\01\60\00\00"       ;; Type section
+
+  "\03\02\01\00"             ;; Function section
+
+  "\04\04\01"                ;; Table section with 1 entry
+  "\70\00\00"                ;; no max, minimum 0, funcref
+
+  "\05\03\01\00\00"          ;; Memory section
+
+  "\09\07\01"                ;; Element section with one segment
+  "\05\70"                   ;; Passive, funcref
+  "\01"                      ;; 1 element
+  "\d2\00\0b"                ;; ref.func, index 0, end
+
+  "\0a\04\01"                ;; Code section
+
+  ;; function 0
+  "\02\00"
+  "\0b")                     ;; end
+
+;; passive element segment containing opcode ref.null
+(module binary
+  "\00asm" "\01\00\00\00"
+
+  "\01\04\01\60\00\00"       ;; Type section
+
+  "\03\02\01\00"             ;; Function section
+
+  "\04\04\01"                ;; Table section with 1 entry
+  "\70\00\00"                ;; no max, minimum 0, funcref
+
+  "\05\03\01\00\00"          ;; Memory section
+
+  "\09\07\01"                ;; Element section with one segment
+  "\05\70"                   ;; Passive, funcref
+  "\01"                      ;; 1 element
+  "\d0\70\0b"                ;; ref.null, end
+
+  "\0a\04\01"                ;; Code section
+
+  ;; function 0
+  "\02\00"
+  "\0b")                     ;; end
+
+
+;; Type count can be zero
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\01\01\00"                               ;; type count can be zero
+)
+
+;; 2 type declared, 1 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\07\02"                             ;; type section with inconsistent count (2 declared, 1 given)
+    "\60\00\00"                             ;; 1st type
+    ;; "\60\00\00"                          ;; 2nd type (missed)
+  )
+  "unexpected end of section or function"
+)
+
+;; 1 type declared, 2 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\07\01"                             ;; type section with inconsistent count (1 declared, 2 given)
+    "\60\00\00"                             ;; 1st type
+    "\60\00\00"                             ;; 2nd type (redundant)
+  )
+  "section size mismatch"
+)
+
+;; Import count can be zero
+(module binary
+    "\00asm" "\01\00\00\00"
+    "\01\05\01"                             ;; type section
+    "\60\01\7f\00"                          ;; type 0
+    "\02\01\00"                             ;; import count can be zero
+)
+
+;; 2 import declared, 1 given
+(assert_malformed
+  (module binary
+      "\00asm" "\01\00\00\00"
+      "\01\05\01"                           ;; type section
+      "\60\01\7f\00"                        ;; type 0
+      "\02\16\02"                           ;; import section with inconsistent count (2 declared, 1 given)
+      ;; 1st import
+      "\08"                                 ;; string length
+      "\73\70\65\63\74\65\73\74"            ;; spectest
+      "\09"                                 ;; string length
+      "\70\72\69\6e\74\5f\69\33\32"         ;; print_i32
+      "\00\00"                              ;; import kind, import signature index
+      ;; 2nd import
+      ;; (missed)
+  )
+  "unexpected end of section or function"
+)
+
+;; 1 import declared, 2 given
+(assert_malformed
+  (module binary
+      "\00asm" "\01\00\00\00"
+      "\01\09\02"                           ;; type section
+      "\60\01\7f\00"                        ;; type 0
+      "\60\01\7d\00"                        ;; type 1
+      "\02\2b\01"                           ;; import section with inconsistent count (1 declared, 2 given)
+      ;; 1st import
+      "\08"                                 ;; string length
+      "\73\70\65\63\74\65\73\74"            ;; spectest
+      "\09"                                 ;; string length
+      "\70\72\69\6e\74\5f\69\33\32"         ;; print_i32
+      "\00\00"                              ;; import kind, import signature index
+      ;; 2nd import
+      ;; (redundant)
+      "\08"                                 ;; string length
+      "\73\70\65\63\74\65\73\74"            ;; spectest
+      "\09"                                 ;; string length
+      "\70\72\69\6e\74\5f\66\33\32"         ;; print_f32
+      "\00\01"                              ;; import kind, import signature index
+  )
+  "section size mismatch"
+)
+
+;; Table count can be zero
+(module binary
+    "\00asm" "\01\00\00\00"
+    "\04\01\00"                             ;; table count can be zero
+)
+
+;; 1 table declared, 0 given
+(assert_malformed
+  (module binary
+      "\00asm" "\01\00\00\00"
+      "\04\01\01"                           ;; table section with inconsistent count (1 declared, 0 given)
+      ;; "\70\01\00\00"                     ;; table entity
+  )
+  "unexpected end of section or function"
+)
+
+;; Memory count can be zero
+(module binary
+    "\00asm" "\01\00\00\00"
+    "\05\01\00"                             ;; memory count can be zero
+)
+
+;; 1 memory declared, 0 given
+(assert_malformed
+  (module binary
+      "\00asm" "\01\00\00\00"
+      "\05\01\01"                           ;; memory section with inconsistent count (1 declared, 0 given)
+      ;; "\00\00"                           ;; memory 0 (missed)
+  )
+  "unexpected end of section or function"
+)
+
+;; Global count can be zero
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\06\01\00"                               ;; global count can be zero
+)
+
+;; 2 global declared, 1 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\06\02"                             ;; global section with inconsistent count (2 declared, 1 given)
+    "\7f\00\41\00\0b"                       ;; global 0
+    ;; "\7f\00\41\00\0b"                    ;; global 1 (missed)
+  )
+  "unexpected end of section or function"
+)
+
+;; 1 global declared, 2 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\0b\01"                             ;; global section with inconsistent count (1 declared, 2 given)
+    "\7f\00\41\00\0b"                       ;; global 0
+    "\7f\00\41\00\0b"                       ;; global 1 (redundant)
+  )
+  "section size mismatch"
+)
+
+;; Export count can be 0
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\01\04\01"                               ;; type section
+  "\60\00\00"                               ;; type 0
+  "\03\03\02\00\00"                         ;; func section
+  "\07\01\00"                               ;; export count can be zero
+  "\0a\07\02"                               ;; code section
+  "\02\00\0b"                               ;; function body 0
+  "\02\00\0b"                               ;; function body 1
+)
+
+;; 2 export declared, 1 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01"                             ;; type section
+    "\60\00\00"                             ;; type 0
+    "\03\03\02\00\00"                       ;; func section
+    "\07\06\02"                             ;; export section with inconsistent count (2 declared, 1 given)
+    "\02"                                   ;; export 0
+    "\66\31"                                ;; export name
+    "\00\00"                                ;; export kind, export func index
+    ;; "\02"                                ;; export 1 (missed)
+    ;; "\66\32"                             ;; export name
+    ;; "\00\01"                             ;; export kind, export func index
+    "\0a\07\02"                             ;; code section
+    "\02\00\0b"                             ;; function body 0
+    "\02\00\0b"                             ;; function body 1
+  )
+  "unexpected end of section or function"
+)
+
+;; 1 export declared, 2 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01"                             ;; type section
+    "\60\00\00"                             ;; type 0
+    "\03\03\02\00\00"                       ;; func section
+    "\07\0b\01"                             ;; export section with inconsistent count (1 declared, 2 given)
+    "\02"                                   ;; export 0
+    "\66\31"                                ;; export name
+    "\00\00"                                ;; export kind, export func index
+    "\02"                                   ;; export 1 (redundant)
+    "\66\32"                                ;; export name
+    "\00\01"                                ;; export kind, export func index
+    "\0a\07\02"                             ;; code section
+    "\02\00\0b"                             ;; function body 0
+    "\02\00\0b"                             ;; function body 1
+  )
+  "section size mismatch"
+)
+
+;; elem segment count can be zero
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\01\04\01"                               ;; type section
+  "\60\00\00"                               ;; type 0
+  "\03\02\01\00"                            ;; func section
+  "\04\04\01"                               ;; table section
+  "\70\00\01"                               ;; table 0
+  "\09\01\00"                               ;; elem segment count can be zero
+  "\0a\04\01"                               ;; code section
+  "\02\00\0b"                               ;; function body
+)
+
+;; 2 elem segment declared, 1 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01"                             ;; type section
+    "\60\00\00"                             ;; type 0
+    "\03\02\01\00"                          ;; func section
+    "\04\04\01"                             ;; table section
+    "\70\00\01"                             ;; table 0
+    "\09\07\02"                             ;; elem with inconsistent segment count (2 declared, 1 given)
+    "\00\41\00\0b\01\00"                    ;; elem 0
+    ;; "\00\41\00\0b\01\00"                 ;; elem 1 (missed)
+    "\0a\04\01"                             ;; code section
+    "\02\00\0b"                             ;; function body
+  )
+  "malformed elements segment kind"
+)
+
+;; 1 elem segment declared, 2 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01"                             ;; type section
+    "\60\00\00"                             ;; type 0
+    "\03\02\01\00"                          ;; func section
+    "\04\04\01"                             ;; table section
+    "\70\00\01"                             ;; table 0
+    "\09\0d\01"                             ;; elem with inconsistent segment count (1 declared, 2 given)
+    "\00\41\00\0b\01\00"                    ;; elem 0
+    "\00\41\00\0b\01\00"                    ;; elem 1 (redundant)
+    "\0a\04\01"                             ;; code section
+    "\02\00\0b"                             ;; function body
+  )
+  "section size mismatch"
+)
+
+;; data segment count can be zero
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\05\03\01"                               ;; memory section
+  "\00\01"                                  ;; memory 0
+  "\0b\01\00"                               ;; data segment count can be zero
+)
+
+;; 2 data segment declared, 1 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\03\01"                             ;; memory section
+    "\00\01"                                ;; memory 0
+    "\0b\07\02"                             ;; data with inconsistent segment count (2 declared, 1 given)
+    "\00\41\00\0b\01\61"                    ;; data 0
+    ;; "\00\41\01\0b\01\62"                 ;; data 1 (missed)
+  )
+  "unexpected end of section or function"
+)
+
+;; 1 data segment declared, 2 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\03\01"                             ;; memory section
+    "\00\01"                                ;; memory 0
+    "\0b\0d\01"                             ;; data with inconsistent segment count (1 declared, 2 given)
+    "\00\41\00\0b\01\61"                    ;; data 0
+    "\00\41\01\0b\01\62"                    ;; data 1 (redundant)
+  )
+  "section size mismatch"
+)
+
+;; data segment has 7 bytes declared, but 6 bytes given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\03\01"                             ;; memory section
+    "\00\01"                                ;; memory 0
+    "\0b\0c\01"                             ;; data section
+    "\00\41\03\0b"                          ;; data segment 0
+    "\07"                                   ;; data segment size with inconsistent lengths (7 declared, 6 given)
+    "\61\62\63\64\65\66"                    ;; 6 bytes given
+  )
+  "unexpected end of section or function"
+)
+
+;; data segment has 5 bytes declared, but 6 bytes given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\03\01"                             ;; memory section
+    "\00\01"                                ;; memory 0
+    "\0b\0c\01"                             ;; data section
+    "\00\41\00\0b"                          ;; data segment 0
+    "\05"                                   ;; data segment size with inconsistent lengths (5 declared, 6 given)
+    "\61\62\63\64\65\66"                    ;; 6 bytes given
+  )
+  "section size mismatch"
+)
+
+;; br_table target count can be zero
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\01\04\01"                               ;; type section
+  "\60\00\00"                               ;; type 0
+  "\03\02\01\00"                            ;; func section
+  "\0a\11\01"                               ;; code section
+  "\0f\00"                                  ;; func 0
+  "\02\40"                                  ;; block 0
+  "\41\01"                                  ;; condition of if 0
+  "\04\40"                                  ;; if 0
+  "\41\01"                                  ;; index of br_table element
+  "\0e\00"                                  ;; br_table target count can be zero
+  "\02"                                     ;; break depth for default
+  "\0b\0b\0b"                               ;; end
+)
+
+;; 2 br_table target declared, 1 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01"                             ;; type section
+    "\60\00\00"                             ;; type 0
+    "\03\02\01\00"                          ;; func section
+    "\0a\12\01"                             ;; code section
+    "\10\00"                                ;; func 0
+    "\02\40"                                ;; block 0
+    "\41\01"                                ;; condition of if 0
+    "\04\40"                                ;; if 0
+    "\41\01"                                ;; index of br_table element
+    "\0e\02"                                ;; br_table with inconsistent target count (2 declared, 1 given)
+    "\00"                                   ;; break depth 0
+    ;; "\01"                                ;; break depth 1 (missed)
+    "\02"                                   ;; break depth for default
+    "\0b\0b\0b"                             ;; end
+  )
+  "unexpected end of section or function"
+)
+
+;; 1 br_table target declared, 2 given
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01"                             ;; type section
+    "\60\00\00"                             ;; type 0
+    "\03\02\01\00"                          ;; func section
+    "\0a\12\01"                             ;; code section
+    "\11\00"                                ;; func 0
+    "\02\40"                                ;; block 0
+    "\41\01"                                ;; condition of if 0
+    "\04\40"                                ;; if 0
+    "\41\01"                                ;; index of br_table element
+    "\0e\01"                                ;; br_table with inconsistent target count (1 declared, 2 given)
+    "\00"                                   ;; break depth 0
+    "\01"                                   ;; break depth 1
+    "\02"                                   ;; break depth for default
+    "\0b\0b\0b"                             ;; end
+  )
+  "malformed reference type"
+)
+
+;; Start section
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\01\04\01\60\00\00"       ;; Type section
+  "\03\02\01\00"             ;; Function section
+  "\08\01\00"                ;; Start section: function 0
+
+  "\0a\04\01"                ;; Code section
+  ;; function 0
+  "\02\00"
+  "\0b"                      ;; end
+)
+
+;; Multiple start sections
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\04\01\60\00\00"       ;; Type section
+    "\03\02\01\00"             ;; Function section
+    "\08\01\00"                ;; Start section: function 0
+    "\08\01\00"                ;; Start section: function 0
+
+    "\0a\04\01"                ;; Code section
+    ;; function 0
+    "\02\00"
+    "\0b"                      ;; end
+  )
+  "junk after last section"
+)
diff --git a/tests/wast/reference-types/br_table.wast b/tests/wast/reference-types/br_table.wast
new file mode 100644
index 00000000..fc84e2f0
--- /dev/null
+++ b/tests/wast/reference-types/br_table.wast
@@ -0,0 +1,1619 @@
+;; Test `br_table` operator
+
+(module
+  ;; Auxiliary definition
+  (func $dummy)
+
+  (func (export "type-i32")
+    (block (drop (i32.ctz (br_table 0 0 (i32.const 0)))))
+  )
+  (func (export "type-i64")
+    (block (drop (i64.ctz (br_table 0 0 (i32.const 0)))))
+  )
+  (func (export "type-f32")
+    (block (drop (f32.neg (br_table 0 0 (i32.const 0)))))
+  )
+  (func (export "type-f64")
+    (block (drop (f64.neg (br_table 0 0 (i32.const 0)))))
+  )
+
+  (func (export "type-i32-value") (result i32)
+    (block (result i32) (i32.ctz (br_table 0 0 (i32.const 1) (i32.const 0))))
+  )
+  (func (export "type-i64-value") (result i64)
+    (block (result i64) (i64.ctz (br_table 0 0 (i64.const 2) (i32.const 0))))
+  )
+  (func (export "type-f32-value") (result f32)
+    (block (result f32) (f32.neg (br_table 0 0 (f32.const 3) (i32.const 0))))
+  )
+  (func (export "type-f64-value") (result f64)
+    (block (result f64) (f64.neg (br_table 0 0 (f64.const 4) (i32.const 0))))
+  )
+
+  (func (export "empty") (param i32) (result i32)
+    (block (br_table 0 (local.get 0)) (return (i32.const 21)))
+    (i32.const 22)
+  )
+  (func (export "empty-value") (param i32) (result i32)
+    (block (result i32)
+      (br_table 0 (i32.const 33) (local.get 0)) (i32.const 31)
+    )
+  )
+
+  (func (export "singleton") (param i32) (result i32)
+    (block
+      (block
+        (br_table 1 0 (local.get 0))
+        (return (i32.const 21))
+      )
+      (return (i32.const 20))
+    )
+    (i32.const 22)
+  )
+
+  (func (export "singleton-value") (param i32) (result i32)
+    (block (result i32)
+      (drop
+        (block (result i32)
+          (br_table 0 1 (i32.const 33) (local.get 0))
+          (return (i32.const 31))
+        )
+      )
+      (i32.const 32)
+    )
+  )
+
+  (func (export "multiple") (param i32) (result i32)
+    (block
+      (block
+        (block
+          (block
+            (block
+              (br_table 3 2 1 0 4 (local.get 0))
+              (return (i32.const 99))
+            )
+            (return (i32.const 100))
+          )
+          (return (i32.const 101))
+        )
+        (return (i32.const 102))
+      )
+      (return (i32.const 103))
+    )
+    (i32.const 104)
+  )
+
+  (func (export "multiple-value") (param i32) (result i32)
+    (local i32)
+    (local.set 1 (block (result i32)
+      (local.set 1 (block (result i32)
+        (local.set 1 (block (result i32)
+          (local.set 1 (block (result i32)
+            (local.set 1 (block (result i32)
+              (br_table 3 2 1 0 4 (i32.const 200) (local.get 0))
+              (return (i32.add (local.get 1) (i32.const 99)))
+            ))
+            (return (i32.add (local.get 1) (i32.const 10)))
+          ))
+          (return (i32.add (local.get 1) (i32.const 11)))
+        ))
+        (return (i32.add (local.get 1) (i32.const 12)))
+      ))
+      (return (i32.add (local.get 1) (i32.const 13)))
+    ))
+    (i32.add (local.get 1) (i32.const 14))
+  )
+
+  (func (export "large") (param i32) (result i32)
+    (block
+      (block
+        (br_table
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
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+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
+          0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
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+          (local.get 0)
+        )
+        (return (i32.const -1))
+      )
+      (return (i32.const 0))
+    )
+    (return (i32.const 1))
+  )
+
+  (func (export "as-block-first")
+    (block (br_table 0 0 0 (i32.const 0)) (call $dummy))
+  )
+  (func (export "as-block-mid")
+    (block (call $dummy) (br_table 0 0 0 (i32.const 0)) (call $dummy))
+  )
+  (func (export "as-block-last")
+    (block (nop) (call $dummy) (br_table 0 0 0 (i32.const 0)))
+  )
+  (func (export "as-block-value") (result i32)
+    (block (result i32)
+      (nop) (call $dummy) (br_table 0 0 0 (i32.const 2) (i32.const 0))
+    )
+  )
+
+  (func (export "as-loop-first") (result i32)
+    (loop (result i32) (br_table 1 1 (i32.const 3) (i32.const 0)) (i32.const 1))
+  )
+  (func (export "as-loop-mid") (result i32)
+    (loop (result i32)
+      (call $dummy)
+      (br_table 1 1 1 (i32.const 4) (i32.const -1))
+      (i32.const 2)
+    )
+  )
+  (func (export "as-loop-last") (result i32)
+    (loop (result i32)
+      (nop) (call $dummy) (br_table 1 1 1 (i32.const 5) (i32.const 1))
+    )
+  )
+
+  (func (export "as-br-value") (result i32)
+    (block (result i32) (br 0 (br_table 0 (i32.const 9) (i32.const 0))))
+  )
+
+  (func (export "as-br_if-cond")
+    (block (br_if 0 (br_table 0 0 0 (i32.const 1))))
+  )
+  (func (export "as-br_if-value") (result i32)
+    (block (result i32)
+      (drop (br_if 0 (br_table 0 (i32.const 8) (i32.const 0)) (i32.const 1)))
+      (i32.const 7)
+    )
+  )
+  (func (export "as-br_if-value-cond") (result i32)
+    (block (result i32)
+      (drop (br_if 0 (i32.const 6) (br_table 0 0 (i32.const 9) (i32.const 0))))
+      (i32.const 7)
+    )
+  )
+
+  (func (export "as-br_table-index")
+    (block (br_table 0 0 0 (br_table 0 (i32.const 1))))
+  )
+  (func (export "as-br_table-value") (result i32)
+    (block (result i32)
+      (br_table 0 0 0 (br_table 0 (i32.const 10) (i32.const 0)) (i32.const 1))
+      (i32.const 7)
+    )
+  )
+  (func (export "as-br_table-value-index") (result i32)
+    (block (result i32)
+      (br_table 0 0 (i32.const 6) (br_table 0 (i32.const 11) (i32.const 1)))
+      (i32.const 7)
+    )
+  )
+
+  (func (export "as-return-value") (result i64)
+    (block (result i64) (return (br_table 0 (i64.const 7) (i32.const 0))))
+  )
+
+  (func (export "as-if-cond") (result i32)
+    (block (result i32)
+      (if (result i32)
+        (br_table 0 (i32.const 2) (i32.const 0))
+        (then (i32.const 0))
+        (else (i32.const 1))
+      )
+    )
+  )
+  (func (export "as-if-then") (param i32 i32) (result i32)
+    (block (result i32)
+      (if (result i32)
+        (local.get 0)
+        (then (br_table 1 (i32.const 3) (i32.const 0)))
+        (else (local.get 1))
+      )
+    )
+  )
+  (func (export "as-if-else") (param i32 i32) (result i32)
+    (block (result i32)
+      (if (result i32)
+        (local.get 0)
+        (then (local.get 1))
+        (else (br_table 1 0 (i32.const 4) (i32.const 0)))
+      )
+    )
+  )
+
+  (func (export "as-select-first") (param i32 i32) (result i32)
+    (block (result i32)
+      (select
+        (br_table 0 (i32.const 5) (i32.const 0)) (local.get 0) (local.get 1)
+      )
+    )
+  )
+  (func (export "as-select-second") (param i32 i32) (result i32)
+    (block (result i32)
+      (select
+        (local.get 0) (br_table 0 (i32.const 6) (i32.const 1)) (local.get 1)
+      )
+    )
+  )
+  (func (export "as-select-cond") (result i32)
+    (block (result i32)
+      (select
+        (i32.const 0) (i32.const 1) (br_table 0 (i32.const 7) (i32.const 1))
+      )
+    )
+  )
+
+  (func $f (param i32 i32 i32) (result i32) (i32.const -1))
+  (func (export "as-call-first") (result i32)
+    (block (result i32)
+      (call $f
+        (br_table 0 (i32.const 12) (i32.const 1)) (i32.const 2) (i32.const 3)
+      )
+    )
+  )
+  (func (export "as-call-mid") (result i32)
+    (block (result i32)
+      (call $f
+        (i32.const 1) (br_table 0 (i32.const 13) (i32.const 1)) (i32.const 3)
+      )
+    )
+  )
+  (func (export "as-call-last") (result i32)
+    (block (result i32)
+      (call $f
+        (i32.const 1) (i32.const 2) (br_table 0 (i32.const 14) (i32.const 1))
+      )
+    )
+  )
+
+  (type $sig (func (param i32 i32 i32) (result i32)))
+  (table funcref (elem $f))
+  (func (export "as-call_indirect-first") (result i32)
+    (block (result i32)
+      (call_indirect (type $sig)
+        (br_table 0 (i32.const 20) (i32.const 1)) (i32.const 1) (i32.const 2)
+        (i32.const 3)
+      )
+    )
+  )
+  (func (export "as-call_indirect-mid") (result i32)
+    (block (result i32)
+      (call_indirect (type $sig)
+        (i32.const 0) (br_table 0 (i32.const 21) (i32.const 1)) (i32.const 2)
+        (i32.const 3)
+      )
+    )
+  )
+  (func (export "as-call_indirect-last") (result i32)
+    (block (result i32)
+      (call_indirect (type $sig)
+        (i32.const 0) (i32.const 1) (br_table 0 (i32.const 22) (i32.const 1))
+        (i32.const 3)
+      )
+    )
+  )
+  (func (export "as-call_indirect-func") (result i32)
+    (block (result i32)
+      (call_indirect (type $sig)
+        (i32.const 0) (i32.const 1) (i32.const 2)
+        (br_table 0 (i32.const 23) (i32.const 1))
+      )
+    )
+  )
+
+  (func (export "as-local.set-value") (result i32)
+    (local f32)
+    (block (result i32)
+      (local.set 0 (br_table 0 (i32.const 17) (i32.const 1)))
+      (i32.const -1)
+    )
+  )
+  (func (export "as-local.tee-value") (result i32)
+    (local i32)
+    (block (result i32)
+      (local.set 0 (br_table 0 (i32.const 1) (i32.const 1)))
+      (i32.const -1)
+    )
+  )
+  (global $a (mut i32) (i32.const 10))
+  (func (export "as-global.set-value") (result i32)
+    (block (result i32)
+      (global.set $a (br_table 0 (i32.const 1) (i32.const 1)))
+      (i32.const -1)
+    )
+  )
+
+  (memory 1)
+  (func (export "as-load-address") (result f32)
+    (block (result f32) (f32.load (br_table 0 (f32.const 1.7) (i32.const 1))))
+  )
+  (func (export "as-loadN-address") (result i64)
+    (block (result i64) (i64.load8_s (br_table 0 (i64.const 30) (i32.const 1))))
+  )
+
+  (func (export "as-store-address") (result i32)
+    (block (result i32)
+      (f64.store (br_table 0 (i32.const 30) (i32.const 1)) (f64.const 7))
+      (i32.const -1)
+    )
+  )
+  (func (export "as-store-value") (result i32)
+    (block (result i32)
+      (i64.store (i32.const 2) (br_table 0 (i32.const 31) (i32.const 1)))
+      (i32.const -1)
+     )
+  )
+
+  (func (export "as-storeN-address") (result i32)
+    (block (result i32)
+      (i32.store8 (br_table 0 (i32.const 32) (i32.const 0)) (i32.const 7))
+      (i32.const -1)
+    )
+  )
+  (func (export "as-storeN-value") (result i32)
+    (block (result i32)
+      (i64.store16 (i32.const 2) (br_table 0 (i32.const 33) (i32.const 0)))
+      (i32.const -1)
+    )
+  )
+
+  (func (export "as-unary-operand") (result f32)
+    (block (result f32) (f32.neg (br_table 0 (f32.const 3.4) (i32.const 0))))
+  )
+
+  (func (export "as-binary-left") (result i32)
+    (block (result i32)
+      (i32.add (br_table 0 0 (i32.const 3) (i32.const 0)) (i32.const 10))
+    )
+  )
+  (func (export "as-binary-right") (result i64)
+    (block (result i64)
+      (i64.sub (i64.const 10) (br_table 0 (i64.const 45) (i32.const 0)))
+    )
+  )
+
+  (func (export "as-test-operand") (result i32)
+    (block (result i32) (i32.eqz (br_table 0 (i32.const 44) (i32.const 0))))
+  )
+
+  (func (export "as-compare-left") (result i32)
+    (block (result i32)
+      (f64.le (br_table 0 0 (i32.const 43) (i32.const 0)) (f64.const 10))
+    )
+  )
+  (func (export "as-compare-right") (result i32)
+    (block (result i32)
+      (f32.ne (f32.const 10) (br_table 0 (i32.const 42) (i32.const 0)))
+    )
+  )
+
+  (func (export "as-convert-operand") (result i32)
+    (block (result i32)
+      (i32.wrap_i64 (br_table 0 (i32.const 41) (i32.const 0)))
+    )
+  )
+
+  (func (export "as-memory.grow-size") (result i32)
+    (block (result i32) (memory.grow (br_table 0 (i32.const 40) (i32.const 0))))
+  )
+
+  (func (export "nested-block-value") (param i32) (result i32)
+    (block (result i32)
+      (drop (i32.const -1))
+      (i32.add
+        (i32.const 1)
+        (block (result i32)
+          (i32.add
+            (i32.const 2)
+            (block (result i32)
+              (drop (i32.const 4))
+              (i32.add
+                (i32.const 8)
+                (br_table 0 1 2 (i32.const 16) (local.get 0))
+              )
+            )
+          )
+        )
+      )
+    )
+  )
+
+  (func (export "nested-br-value") (param i32) (result i32)
+    (block (result i32)
+      (i32.add
+        (i32.const 1)
+        (block (result i32)
+          (drop (i32.const 2))
+          (drop
+            (block (result i32)
+              (drop (i32.const 4))
+              (br 0 (br_table 2 1 0 (i32.const 8) (local.get 0)))
+            )
+          )
+          (i32.const 16)
+        )
+      )
+    )
+  )
+
+  (func (export "nested-br_if-value") (param i32) (result i32)
+    (block (result i32)
+      (i32.add
+        (i32.const 1)
+        (block (result i32)
+          (drop (i32.const 2))
+          (drop
+            (block (result i32)
+              (drop (i32.const 4))
+              (drop
+                (br_if 0
+                  (br_table 0 1 2 (i32.const 8) (local.get 0))
+                  (i32.const 1)
+                )
+              )
+              (i32.const 32)
+            )
+          )
+          (i32.const 16)
+        )
+      )
+    )
+  )
+
+  (func (export "nested-br_if-value-cond") (param i32) (result i32)
+    (block (result i32)
+      (i32.add
+        (i32.const 1)
+        (block (result i32)
+          (drop (i32.const 2))
+          (drop
+            (br_if 0 (i32.const 4) (br_table 0 1 0 (i32.const 8) (local.get 0)))
+          )
+          (i32.const 16)
+        )
+      )
+    )
+  )
+
+  (func (export "nested-br_table-value") (param i32) (result i32)
+    (block (result i32)
+      (i32.add
+        (i32.const 1)
+        (block (result i32)
+          (drop (i32.const 2))
+          (drop
+            (block (result i32)
+              (drop (i32.const 4))
+              (br_table 0 (br_table 0 1 2 (i32.const 8) (local.get 0)) (i32.const 1))
+              (i32.const 32)
+            )
+          )
+          (i32.const 16)
+        )
+      )
+    )
+  )
+
+  (func (export "nested-br_table-value-index") (param i32) (result i32)
+    (block (result i32)
+      (i32.add
+        (i32.const 1)
+        (block (result i32)
+          (drop (i32.const 2))
+          (br_table 0 (i32.const 4) (br_table 0 1 0 (i32.const 8) (local.get 0)))
+          (i32.const 16)
+        )
+      )
+    )
+  )
+
+  (func (export "nested-br_table-loop-block") (param i32) (result i32)
+    (local.set 0
+      (loop (result i32)
+        (block
+          (br_table 1 0 0 (local.get 0))
+        )
+        (i32.const 0)
+      )
+    )
+    (loop (result i32)
+      (block
+        (br_table 0 1 1 (local.get 0))
+      )
+      (i32.const 3)
+    )
+  )
+
+  (func (export "meet-externref") (param i32) (param externref) (result externref)
+    (block $l1 (result externref)
+      (block $l2 (result externref)
+        (br_table $l1 $l2 $l1 (local.get 1) (local.get 0))
+      )
+    )
+  )
+)
+
+(assert_return (invoke "type-i32"))
+(assert_return (invoke "type-i64"))
+(assert_return (invoke "type-f32"))
+(assert_return (invoke "type-f64"))
+
+(assert_return (invoke "type-i32-value") (i32.const 1))
+(assert_return (invoke "type-i64-value") (i64.const 2))
+(assert_return (invoke "type-f32-value") (f32.const 3))
+(assert_return (invoke "type-f64-value") (f64.const 4))
+
+(assert_return (invoke "empty" (i32.const 0)) (i32.const 22))
+(assert_return (invoke "empty" (i32.const 1)) (i32.const 22))
+(assert_return (invoke "empty" (i32.const 11)) (i32.const 22))
+(assert_return (invoke "empty" (i32.const -1)) (i32.const 22))
+(assert_return (invoke "empty" (i32.const -100)) (i32.const 22))
+(assert_return (invoke "empty" (i32.const 0xffffffff)) (i32.const 22))
+
+(assert_return (invoke "empty-value" (i32.const 0)) (i32.const 33))
+(assert_return (invoke "empty-value" (i32.const 1)) (i32.const 33))
+(assert_return (invoke "empty-value" (i32.const 11)) (i32.const 33))
+(assert_return (invoke "empty-value" (i32.const -1)) (i32.const 33))
+(assert_return (invoke "empty-value" (i32.const -100)) (i32.const 33))
+(assert_return (invoke "empty-value" (i32.const 0xffffffff)) (i32.const 33))
+
+(assert_return (invoke "singleton" (i32.const 0)) (i32.const 22))
+(assert_return (invoke "singleton" (i32.const 1)) (i32.const 20))
+(assert_return (invoke "singleton" (i32.const 11)) (i32.const 20))
+(assert_return (invoke "singleton" (i32.const -1)) (i32.const 20))
+(assert_return (invoke "singleton" (i32.const -100)) (i32.const 20))
+(assert_return (invoke "singleton" (i32.const 0xffffffff)) (i32.const 20))
+
+(assert_return (invoke "singleton-value" (i32.const 0)) (i32.const 32))
+(assert_return (invoke "singleton-value" (i32.const 1)) (i32.const 33))
+(assert_return (invoke "singleton-value" (i32.const 11)) (i32.const 33))
+(assert_return (invoke "singleton-value" (i32.const -1)) (i32.const 33))
+(assert_return (invoke "singleton-value" (i32.const -100)) (i32.const 33))
+(assert_return (invoke "singleton-value" (i32.const 0xffffffff)) (i32.const 33))
+
+(assert_return (invoke "multiple" (i32.const 0)) (i32.const 103))
+(assert_return (invoke "multiple" (i32.const 1)) (i32.const 102))
+(assert_return (invoke "multiple" (i32.const 2)) (i32.const 101))
+(assert_return (invoke "multiple" (i32.const 3)) (i32.const 100))
+(assert_return (invoke "multiple" (i32.const 4)) (i32.const 104))
+(assert_return (invoke "multiple" (i32.const 5)) (i32.const 104))
+(assert_return (invoke "multiple" (i32.const 6)) (i32.const 104))
+(assert_return (invoke "multiple" (i32.const 10)) (i32.const 104))
+(assert_return (invoke "multiple" (i32.const -1)) (i32.const 104))
+(assert_return (invoke "multiple" (i32.const 0xffffffff)) (i32.const 104))
+
+(assert_return (invoke "multiple-value" (i32.const 0)) (i32.const 213))
+(assert_return (invoke "multiple-value" (i32.const 1)) (i32.const 212))
+(assert_return (invoke "multiple-value" (i32.const 2)) (i32.const 211))
+(assert_return (invoke "multiple-value" (i32.const 3)) (i32.const 210))
+(assert_return (invoke "multiple-value" (i32.const 4)) (i32.const 214))
+(assert_return (invoke "multiple-value" (i32.const 5)) (i32.const 214))
+(assert_return (invoke "multiple-value" (i32.const 6)) (i32.const 214))
+(assert_return (invoke "multiple-value" (i32.const 10)) (i32.const 214))
+(assert_return (invoke "multiple-value" (i32.const -1)) (i32.const 214))
+(assert_return (invoke "multiple-value" (i32.const 0xffffffff)) (i32.const 214))
+
+(assert_return (invoke "large" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "large" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "large" (i32.const 100)) (i32.const 0))
+(assert_return (invoke "large" (i32.const 101)) (i32.const 1))
+(assert_return (invoke "large" (i32.const 10000)) (i32.const 0))
+(assert_return (invoke "large" (i32.const 10001)) (i32.const 1))
+(assert_return (invoke "large" (i32.const 1000000)) (i32.const 1))
+(assert_return (invoke "large" (i32.const 1000001)) (i32.const 1))
+
+(assert_return (invoke "as-block-first"))
+(assert_return (invoke "as-block-mid"))
+(assert_return (invoke "as-block-last"))
+(assert_return (invoke "as-block-value") (i32.const 2))
+
+(assert_return (invoke "as-loop-first") (i32.const 3))
+(assert_return (invoke "as-loop-mid") (i32.const 4))
+(assert_return (invoke "as-loop-last") (i32.const 5))
+
+(assert_return (invoke "as-br-value") (i32.const 9))
+
+(assert_return (invoke "as-br_if-cond"))
+(assert_return (invoke "as-br_if-value") (i32.const 8))
+(assert_return (invoke "as-br_if-value-cond") (i32.const 9))
+
+(assert_return (invoke "as-br_table-index"))
+(assert_return (invoke "as-br_table-value") (i32.const 10))
+(assert_return (invoke "as-br_table-value-index") (i32.const 11))
+
+(assert_return (invoke "as-return-value") (i64.const 7))
+
+(assert_return (invoke "as-if-cond") (i32.const 2))
+(assert_return (invoke "as-if-then" (i32.const 1) (i32.const 6)) (i32.const 3))
+(assert_return (invoke "as-if-then" (i32.const 0) (i32.const 6)) (i32.const 6))
+(assert_return (invoke "as-if-else" (i32.const 0) (i32.const 6)) (i32.const 4))
+(assert_return (invoke "as-if-else" (i32.const 1) (i32.const 6)) (i32.const 6))
+
+(assert_return (invoke "as-select-first" (i32.const 0) (i32.const 6)) (i32.const 5))
+(assert_return (invoke "as-select-first" (i32.const 1) (i32.const 6)) (i32.const 5))
+(assert_return (invoke "as-select-second" (i32.const 0) (i32.const 6)) (i32.const 6))
+(assert_return (invoke "as-select-second" (i32.const 1) (i32.const 6)) (i32.const 6))
+(assert_return (invoke "as-select-cond") (i32.const 7))
+
+(assert_return (invoke "as-call-first") (i32.const 12))
+(assert_return (invoke "as-call-mid") (i32.const 13))
+(assert_return (invoke "as-call-last") (i32.const 14))
+
+(assert_return (invoke "as-call_indirect-first") (i32.const 20))
+(assert_return (invoke "as-call_indirect-mid") (i32.const 21))
+(assert_return (invoke "as-call_indirect-last") (i32.const 22))
+(assert_return (invoke "as-call_indirect-func") (i32.const 23))
+
+(assert_return (invoke "as-local.set-value") (i32.const 17))
+(assert_return (invoke "as-local.tee-value") (i32.const 1))
+(assert_return (invoke "as-global.set-value") (i32.const 1))
+
+(assert_return (invoke "as-load-address") (f32.const 1.7))
+(assert_return (invoke "as-loadN-address") (i64.const 30))
+
+(assert_return (invoke "as-store-address") (i32.const 30))
+(assert_return (invoke "as-store-value") (i32.const 31))
+(assert_return (invoke "as-storeN-address") (i32.const 32))
+(assert_return (invoke "as-storeN-value") (i32.const 33))
+
+(assert_return (invoke "as-unary-operand") (f32.const 3.4))
+
+(assert_return (invoke "as-binary-left") (i32.const 3))
+(assert_return (invoke "as-binary-right") (i64.const 45))
+
+(assert_return (invoke "as-test-operand") (i32.const 44))
+
+(assert_return (invoke "as-compare-left") (i32.const 43))
+(assert_return (invoke "as-compare-right") (i32.const 42))
+
+(assert_return (invoke "as-convert-operand") (i32.const 41))
+
+(assert_return (invoke "as-memory.grow-size") (i32.const 40))
+
+(assert_return (invoke "nested-block-value" (i32.const 0)) (i32.const 19))
+(assert_return (invoke "nested-block-value" (i32.const 1)) (i32.const 17))
+(assert_return (invoke "nested-block-value" (i32.const 2)) (i32.const 16))
+(assert_return (invoke "nested-block-value" (i32.const 10)) (i32.const 16))
+(assert_return (invoke "nested-block-value" (i32.const -1)) (i32.const 16))
+(assert_return (invoke "nested-block-value" (i32.const 100000)) (i32.const 16))
+
+(assert_return (invoke "nested-br-value" (i32.const 0)) (i32.const 8))
+(assert_return (invoke "nested-br-value" (i32.const 1)) (i32.const 9))
+(assert_return (invoke "nested-br-value" (i32.const 2)) (i32.const 17))
+(assert_return (invoke "nested-br-value" (i32.const 11)) (i32.const 17))
+(assert_return (invoke "nested-br-value" (i32.const -4)) (i32.const 17))
+(assert_return (invoke "nested-br-value" (i32.const 10213210)) (i32.const 17))
+
+(assert_return (invoke "nested-br_if-value" (i32.const 0)) (i32.const 17))
+(assert_return (invoke "nested-br_if-value" (i32.const 1)) (i32.const 9))
+(assert_return (invoke "nested-br_if-value" (i32.const 2)) (i32.const 8))
+(assert_return (invoke "nested-br_if-value" (i32.const 9)) (i32.const 8))
+(assert_return (invoke "nested-br_if-value" (i32.const -9)) (i32.const 8))
+(assert_return (invoke "nested-br_if-value" (i32.const 999999)) (i32.const 8))
+
+(assert_return (invoke "nested-br_if-value-cond" (i32.const 0)) (i32.const 9))
+(assert_return (invoke "nested-br_if-value-cond" (i32.const 1)) (i32.const 8))
+(assert_return (invoke "nested-br_if-value-cond" (i32.const 2)) (i32.const 9))
+(assert_return (invoke "nested-br_if-value-cond" (i32.const 3)) (i32.const 9))
+(assert_return (invoke "nested-br_if-value-cond" (i32.const -1000000)) (i32.const 9))
+(assert_return (invoke "nested-br_if-value-cond" (i32.const 9423975)) (i32.const 9))
+
+(assert_return (invoke "nested-br_table-value" (i32.const 0)) (i32.const 17))
+(assert_return (invoke "nested-br_table-value" (i32.const 1)) (i32.const 9))
+(assert_return (invoke "nested-br_table-value" (i32.const 2)) (i32.const 8))
+(assert_return (invoke "nested-br_table-value" (i32.const 9)) (i32.const 8))
+(assert_return (invoke "nested-br_table-value" (i32.const -9)) (i32.const 8))
+(assert_return (invoke "nested-br_table-value" (i32.const 999999)) (i32.const 8))
+
+(assert_return (invoke "nested-br_table-value-index" (i32.const 0)) (i32.const 9))
+(assert_return (invoke "nested-br_table-value-index" (i32.const 1)) (i32.const 8))
+(assert_return (invoke "nested-br_table-value-index" (i32.const 2)) (i32.const 9))
+(assert_return (invoke "nested-br_table-value-index" (i32.const 3)) (i32.const 9))
+(assert_return (invoke "nested-br_table-value-index" (i32.const -1000000)) (i32.const 9))
+(assert_return (invoke "nested-br_table-value-index" (i32.const 9423975)) (i32.const 9))
+
+(assert_return (invoke "nested-br_table-loop-block" (i32.const 1)) (i32.const 3))
+
+(assert_return (invoke "meet-externref" (i32.const 0) (ref.extern 1)) (ref.extern 1))
+(assert_return (invoke "meet-externref" (i32.const 1) (ref.extern 1)) (ref.extern 1))
+(assert_return (invoke "meet-externref" (i32.const 2) (ref.extern 1)) (ref.extern 1))
+
+(assert_invalid
+  (module (func $type-arg-void-vs-num (result i32)
+    (block (br_table 0 (i32.const 1)) (i32.const 1))
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-arg-empty-vs-num (result i32)
+    (block (br_table 0) (i32.const 1))
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-arg-void-vs-num (result i32)
+    (block (result i32) (br_table 0 (nop) (i32.const 1)) (i32.const 1))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-arg-num-vs-num (result i32)
+    (block (result i32)
+      (br_table 0 0 0 (i64.const 1) (i32.const 1)) (i32.const 1)
+    )
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-arg-num-vs-arg-num
+    (block
+      (block (result f32)
+        (br_table 0 1 (f32.const 0) (i32.const 0))
+      )
+      (drop)
+    )
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-index-void-vs-i32
+    (block (br_table 0 0 0 (nop)))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-index-num-vs-i32
+    (block (br_table 0 (i64.const 0)))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-arg-index-void-vs-i32 (result i32)
+    (block (result i32) (br_table 0 0 (i32.const 0) (nop)) (i32.const 1))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-arg-void-vs-num-nested (result i32)
+    (block (result i32) (i32.const 0) (block (br_table 1 (i32.const 0))))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-arg-index-num-vs-i32 (result i32)
+    (block (result i32)
+      (br_table 0 0 (i32.const 0) (i64.const 0)) (i32.const 1)
+    )
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-arg-void-vs-num (result i32)
+    (block (br_table 0 (i32.const 1)) (i32.const 1))
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (func $type-arg-index-empty-in-then
+      (block
+        (i32.const 0) (i32.const 0)
+        (if (result i32) (then (br_table 0)))
+      )
+      (i32.eqz) (drop)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-arg-value-empty-in-then
+      (block
+        (i32.const 0) (i32.const 0)
+        (if (result i32) (then (br_table 0 (i32.const 1))))
+      )
+      (i32.eqz) (drop)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-arg-index-empty-in-return
+      (block (result i32)
+        (return (br_table 0))
+      )
+      (i32.eqz) (drop)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-arg-value-empty-in-return
+      (block (result i32)
+        (return (br_table 0 (i32.const 1)))
+      )
+      (i32.eqz) (drop)
+    )
+  )
+  "type mismatch"
+)
+
+
+(assert_invalid
+  (module (func $meet-bottom (param i32) (result externref)
+    (block $l1 (result externref)
+      (drop
+        (block $l2 (result i32)
+          (br_table $l2 $l1 $l2 (ref.null extern) (local.get 0))
+        )
+      )
+      (ref.null extern)
+    )
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $unbound-label
+    (block (br_table 2 1 (i32.const 1)))
+  ))
+  "unknown label"
+)
+(assert_invalid
+  (module (func $unbound-nested-label
+    (block (block (br_table 0 5 (i32.const 1))))
+  ))
+  "unknown label"
+)
+(assert_invalid
+  (module (func $large-label
+    (block (br_table 0 0x10000001 0 (i32.const 1)))
+  ))
+  "unknown label"
+)
+
+(assert_invalid
+  (module (func $unbound-label-default
+    (block (br_table 1 2 (i32.const 1)))
+  ))
+  "unknown label"
+)
+(assert_invalid
+  (module (func $unbound-nested-label-default
+    (block (block (br_table 0 5 (i32.const 1))))
+  ))
+  "unknown label"
+)
+(assert_invalid
+  (module (func $large-label-default
+    (block (br_table 0 0 0x10000001 (i32.const 1)))
+  ))
+  "unknown label"
+)
+
diff --git a/tests/wast/reference-types/bulk.wast b/tests/wast/reference-types/bulk.wast
new file mode 100644
index 00000000..1927461f
--- /dev/null
+++ b/tests/wast/reference-types/bulk.wast
@@ -0,0 +1,307 @@
+;; segment syntax
+(module
+  (memory 1)
+  (data "foo"))
+
+(module
+  (table 3 funcref)
+  (elem funcref (ref.func 0) (ref.null func) (ref.func 1))
+  (func)
+  (func))
+
+;; memory.fill
+(module
+  (memory 1)
+
+  (func (export "fill") (param i32 i32 i32)
+    (memory.fill
+      (local.get 0)
+      (local.get 1)
+      (local.get 2)))
+
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0)))
+)
+
+;; Basic fill test.
+(invoke "fill" (i32.const 1) (i32.const 0xff) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0xff))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 0xff))
+(assert_return (invoke "load8_u" (i32.const 3)) (i32.const 0xff))
+(assert_return (invoke "load8_u" (i32.const 4)) (i32.const 0))
+
+;; Fill value is stored as a byte.
+(invoke "fill" (i32.const 0) (i32.const 0xbbaa) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0xaa))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0xaa))
+
+;; Fill all of memory
+(invoke "fill" (i32.const 0) (i32.const 0) (i32.const 0x10000))
+
+;; Out-of-bounds writes trap, and nothing is written
+(assert_trap (invoke "fill" (i32.const 0xff00) (i32.const 1) (i32.const 0x101))
+    "out of bounds memory access")
+(assert_return (invoke "load8_u" (i32.const 0xff00)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 0xffff)) (i32.const 0))
+
+;; Succeed when writing 0 bytes at the end of the region.
+(invoke "fill" (i32.const 0x10000) (i32.const 0) (i32.const 0))
+
+;; Writing 0 bytes outside the memory traps.
+(assert_trap (invoke "fill" (i32.const 0x10001) (i32.const 0) (i32.const 0))
+    "out of bounds memory access")
+
+
+;; memory.copy
+(module
+  (memory (data "\aa\bb\cc\dd"))
+
+  (func (export "copy") (param i32 i32 i32)
+    (memory.copy
+      (local.get 0)
+      (local.get 1)
+      (local.get 2)))
+
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0)))
+)
+
+;; Non-overlapping copy.
+(invoke "copy" (i32.const 10) (i32.const 0) (i32.const 4))
+
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 0xaa))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0xbb))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 0xcc))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 0xdd))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 0))
+
+;; Overlap, source > dest
+(invoke "copy" (i32.const 8) (i32.const 10) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 8)) (i32.const 0xaa))
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 0xbb))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 0xcc))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0xdd))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 0xcc))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 0xdd))
+
+;; Overlap, source < dest
+(invoke "copy" (i32.const 10) (i32.const 7) (i32.const 6))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0xaa))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 0xbb))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 0xcc))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 0xdd))
+(assert_return (invoke "load8_u" (i32.const 15)) (i32.const 0xcc))
+(assert_return (invoke "load8_u" (i32.const 16)) (i32.const 0))
+
+;; Copy ending at memory limit is ok.
+(invoke "copy" (i32.const 0xff00) (i32.const 0) (i32.const 0x100))
+(invoke "copy" (i32.const 0xfe00) (i32.const 0xff00) (i32.const 0x100))
+
+;; Succeed when copying 0 bytes at the end of the region.
+(invoke "copy" (i32.const 0x10000) (i32.const 0) (i32.const 0))
+(invoke "copy" (i32.const 0) (i32.const 0x10000) (i32.const 0))
+
+;; Copying 0 bytes outside the memory traps.
+(assert_trap (invoke "copy" (i32.const 0x10001) (i32.const 0) (i32.const 0))
+    "out of bounds memory access")
+(assert_trap (invoke "copy" (i32.const 0) (i32.const 0x10001) (i32.const 0))
+    "out of bounds memory access")
+
+
+;; memory.init
+(module
+  (memory 1)
+  (data "\aa\bb\cc\dd")
+
+  (func (export "init") (param i32 i32 i32)
+    (memory.init 0
+      (local.get 0)
+      (local.get 1)
+      (local.get 2)))
+
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0)))
+)
+
+(invoke "init" (i32.const 0) (i32.const 1) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0xbb))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0xcc))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 0))
+
+;; Init ending at memory limit and segment limit is ok.
+(invoke "init" (i32.const 0xfffc) (i32.const 0) (i32.const 4))
+
+;; Out-of-bounds writes trap, and nothing is written.
+(assert_trap (invoke "init" (i32.const 0xfffe) (i32.const 0) (i32.const 3))
+    "out of bounds memory access")
+(assert_return (invoke "load8_u" (i32.const 0xfffe)) (i32.const 0xcc))
+(assert_return (invoke "load8_u" (i32.const 0xffff)) (i32.const 0xdd))
+
+;; Succeed when writing 0 bytes at the end of either region.
+(invoke "init" (i32.const 0x10000) (i32.const 0) (i32.const 0))
+(invoke "init" (i32.const 0) (i32.const 4) (i32.const 0))
+
+;; Writing 0 bytes outside the memory traps.
+(assert_trap (invoke "init" (i32.const 0x10001) (i32.const 0) (i32.const 0))
+    "out of bounds memory access")
+(assert_trap (invoke "init" (i32.const 0) (i32.const 5) (i32.const 0))
+    "out of bounds memory access")
+
+;; data.drop
+(module
+  (memory 1)
+  (data $p "x")
+  (data $a (memory 0) (i32.const 0) "x")
+
+  (func (export "drop_passive") (data.drop $p))
+  (func (export "init_passive") (param $len i32)
+    (memory.init $p (i32.const 0) (i32.const 0) (local.get $len)))
+
+  (func (export "drop_active") (data.drop $a))
+  (func (export "init_active") (param $len i32)
+    (memory.init $a (i32.const 0) (i32.const 0) (local.get $len)))
+)
+
+(invoke "init_passive" (i32.const 1))
+(invoke "drop_passive")
+(invoke "drop_passive")
+(assert_return (invoke "init_passive" (i32.const 0)))
+(assert_trap (invoke "init_passive" (i32.const 1)) "out of bounds")
+(invoke "init_passive" (i32.const 0))
+(invoke "drop_active")
+(assert_return (invoke "init_active" (i32.const 0)))
+(assert_trap (invoke "init_active" (i32.const 1)) "out of bounds")
+(invoke "init_active" (i32.const 0))
+
+
+;; table.init
+(module
+  (table 3 funcref)
+  (elem funcref
+    (ref.func $zero) (ref.func $one) (ref.func $zero) (ref.func $one))
+
+  (func $zero (result i32) (i32.const 0))
+  (func $one (result i32) (i32.const 1))
+
+  (func (export "init") (param i32 i32 i32)
+    (table.init 0
+      (local.get 0)
+      (local.get 1)
+      (local.get 2)))
+
+  (func (export "call") (param i32) (result i32)
+    (call_indirect (result i32)
+      (local.get 0)))
+)
+
+;; Out-of-bounds stores trap, and nothing is written.
+(assert_trap (invoke "init" (i32.const 2) (i32.const 0) (i32.const 2))
+    "out of bounds table access")
+(assert_trap (invoke "call" (i32.const 2))
+    "uninitialized element 2")
+
+(invoke "init" (i32.const 0) (i32.const 1) (i32.const 2))
+(assert_return (invoke "call" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "call" (i32.const 1)) (i32.const 0))
+(assert_trap (invoke "call" (i32.const 2)) "uninitialized element")
+
+;; Init ending at table limit and segment limit is ok.
+(invoke "init" (i32.const 1) (i32.const 2) (i32.const 2))
+
+;; Succeed when storing 0 elements at the end of either region.
+(invoke "init" (i32.const 3) (i32.const 0) (i32.const 0))
+(invoke "init" (i32.const 0) (i32.const 4) (i32.const 0))
+
+;; Writing 0 elements outside the table traps.
+(assert_trap (invoke "init" (i32.const 4) (i32.const 0) (i32.const 0))
+    "out of bounds table access")
+(assert_trap (invoke "init" (i32.const 0) (i32.const 5) (i32.const 0))
+    "out of bounds table access")
+
+
+;; elem.drop
+(module
+  (table 1 funcref)
+  (func $f)
+  (elem $p funcref (ref.func $f))
+  (elem $a (table 0) (i32.const 0) func $f)
+
+  (func (export "drop_passive") (elem.drop $p))
+  (func (export "init_passive") (param $len i32)
+    (table.init $p (i32.const 0) (i32.const 0) (local.get $len))
+  )
+
+  (func (export "drop_active") (elem.drop $a))
+  (func (export "init_active") (param $len i32)
+    (table.init $a (i32.const 0) (i32.const 0) (local.get $len))
+  )
+)
+
+(invoke "init_passive" (i32.const 1))
+(invoke "drop_passive")
+(invoke "drop_passive")
+(assert_return (invoke "init_passive" (i32.const 0)))
+(assert_trap (invoke "init_passive" (i32.const 1)) "out of bounds")
+(invoke "init_passive" (i32.const 0))
+(invoke "drop_active")
+(assert_return (invoke "init_active" (i32.const 0)))
+(assert_trap (invoke "init_active" (i32.const 1)) "out of bounds")
+(invoke "init_active" (i32.const 0))
+
+
+;; table.copy
+(module
+  (table 10 funcref)
+  (elem (i32.const 0) $zero $one $two)
+  (func $zero (result i32) (i32.const 0))
+  (func $one (result i32) (i32.const 1))
+  (func $two (result i32) (i32.const 2))
+
+  (func (export "copy") (param i32 i32 i32)
+    (table.copy
+      (local.get 0)
+      (local.get 1)
+      (local.get 2)))
+
+  (func (export "call") (param i32) (result i32)
+    (call_indirect (result i32)
+      (local.get 0)))
+)
+
+;; Non-overlapping copy.
+(invoke "copy" (i32.const 3) (i32.const 0) (i32.const 3))
+;; Now [$zero, $one, $two, $zero, $one, $two, ...]
+(assert_return (invoke "call" (i32.const 3)) (i32.const 0))
+(assert_return (invoke "call" (i32.const 4)) (i32.const 1))
+(assert_return (invoke "call" (i32.const 5)) (i32.const 2))
+
+;; Overlap, source > dest
+(invoke "copy" (i32.const 0) (i32.const 1) (i32.const 3))
+;; Now [$one, $two, $zero, $zero, $one, $two, ...]
+(assert_return (invoke "call" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "call" (i32.const 1)) (i32.const 2))
+(assert_return (invoke "call" (i32.const 2)) (i32.const 0))
+
+;; Overlap, source < dest
+(invoke "copy" (i32.const 2) (i32.const 0) (i32.const 3))
+;; Now [$one, $two, $one, $two, $zero, $two, ...]
+(assert_return (invoke "call" (i32.const 2)) (i32.const 1))
+(assert_return (invoke "call" (i32.const 3)) (i32.const 2))
+(assert_return (invoke "call" (i32.const 4)) (i32.const 0))
+
+;; Copy ending at table limit is ok.
+(invoke "copy" (i32.const 6) (i32.const 8) (i32.const 2))
+(invoke "copy" (i32.const 8) (i32.const 6) (i32.const 2))
+
+;; Succeed when copying 0 elements at the end of the region.
+(invoke "copy" (i32.const 10) (i32.const 0) (i32.const 0))
+(invoke "copy" (i32.const 0) (i32.const 10) (i32.const 0))
+
+;; Fail on out-of-bounds when copying 0 elements outside of table.
+(assert_trap (invoke "copy" (i32.const 11) (i32.const 0) (i32.const 0))
+  "out of bounds")
+(assert_trap (invoke "copy" (i32.const 0) (i32.const 11) (i32.const 0))
+  "out of bounds")
diff --git a/tests/wast/reference-types/call_indirect.wast b/tests/wast/reference-types/call_indirect.wast
new file mode 100644
index 00000000..de7534b9
--- /dev/null
+++ b/tests/wast/reference-types/call_indirect.wast
@@ -0,0 +1,988 @@
+;; Test `call_indirect` operator
+
+(module
+  ;; Auxiliary definitions
+  (type $proc (func))
+  (type $out-i32 (func (result i32)))
+  (type $out-i64 (func (result i64)))
+  (type $out-f32 (func (result f32)))
+  (type $out-f64 (func (result f64)))
+  (type $over-i32 (func (param i32) (result i32)))
+  (type $over-i64 (func (param i64) (result i64)))
+  (type $over-f32 (func (param f32) (result f32)))
+  (type $over-f64 (func (param f64) (result f64)))
+  (type $f32-i32 (func (param f32 i32) (result i32)))
+  (type $i32-i64 (func (param i32 i64) (result i64)))
+  (type $f64-f32 (func (param f64 f32) (result f32)))
+  (type $i64-f64 (func (param i64 f64) (result f64)))
+  (type $over-i32-duplicate (func (param i32) (result i32)))
+  (type $over-i64-duplicate (func (param i64) (result i64)))
+  (type $over-f32-duplicate (func (param f32) (result f32)))
+  (type $over-f64-duplicate (func (param f64) (result f64)))
+
+  (func $const-i32 (type $out-i32) (i32.const 0x132))
+  (func $const-i64 (type $out-i64) (i64.const 0x164))
+  (func $const-f32 (type $out-f32) (f32.const 0xf32))
+  (func $const-f64 (type $out-f64) (f64.const 0xf64))
+
+  (func $id-i32 (type $over-i32) (local.get 0))
+  (func $id-i64 (type $over-i64) (local.get 0))
+  (func $id-f32 (type $over-f32) (local.get 0))
+  (func $id-f64 (type $over-f64) (local.get 0))
+
+  (func $i32-i64 (type $i32-i64) (local.get 1))
+  (func $i64-f64 (type $i64-f64) (local.get 1))
+  (func $f32-i32 (type $f32-i32) (local.get 1))
+  (func $f64-f32 (type $f64-f32) (local.get 1))
+
+  (func $over-i32-duplicate (type $over-i32-duplicate) (local.get 0))
+  (func $over-i64-duplicate (type $over-i64-duplicate) (local.get 0))
+  (func $over-f32-duplicate (type $over-f32-duplicate) (local.get 0))
+  (func $over-f64-duplicate (type $over-f64-duplicate) (local.get 0))
+
+  (table funcref
+    (elem
+      $const-i32 $const-i64 $const-f32 $const-f64
+      $id-i32 $id-i64 $id-f32 $id-f64
+      $f32-i32 $i32-i64 $f64-f32 $i64-f64
+      $fac-i64 $fib-i64 $even $odd
+      $runaway $mutual-runaway1 $mutual-runaway2
+      $over-i32-duplicate $over-i64-duplicate
+      $over-f32-duplicate $over-f64-duplicate
+      $fac-i32 $fac-f32 $fac-f64
+      $fib-i32 $fib-f32 $fib-f64
+    )
+  )
+
+  ;; Syntax
+
+  (func
+    (call_indirect (i32.const 0))
+    (call_indirect (param i64) (i64.const 0) (i32.const 0))
+    (call_indirect (param i64) (param) (param f64 i32 i64)
+      (i64.const 0) (f64.const 0) (i32.const 0) (i64.const 0) (i32.const 0)
+    )
+    (call_indirect (result) (i32.const 0))
+    (drop (i32.eqz (call_indirect (result i32) (i32.const 0))))
+    (drop (i32.eqz (call_indirect (result i32) (result) (i32.const 0))))
+    (drop (i32.eqz
+      (call_indirect (param i64) (result i32) (i64.const 0) (i32.const 0))
+    ))
+    (drop (i32.eqz
+      (call_indirect
+        (param) (param i64) (param) (param f64 i32 i64) (param) (param)
+        (result) (result i32) (result) (result)
+        (i64.const 0) (f64.const 0) (i32.const 0) (i64.const 0) (i32.const 0)
+      )
+    ))
+    (drop (i64.eqz
+      (call_indirect (type $over-i64) (param i64) (result i64)
+        (i64.const 0) (i32.const 0)
+      )
+    ))
+  )
+
+  ;; Typing
+
+  (func (export "type-i32") (result i32)
+    (call_indirect (type $out-i32) (i32.const 0))
+  )
+  (func (export "type-i64") (result i64)
+    (call_indirect (type $out-i64) (i32.const 1))
+  )
+  (func (export "type-f32") (result f32)
+    (call_indirect (type $out-f32) (i32.const 2))
+  )
+  (func (export "type-f64") (result f64)
+    (call_indirect (type $out-f64) (i32.const 3))
+  )
+
+  (func (export "type-index") (result i64)
+    (call_indirect (type $over-i64) (i64.const 100) (i32.const 5))
+  )
+
+  (func (export "type-first-i32") (result i32)
+    (call_indirect (type $over-i32) (i32.const 32) (i32.const 4))
+  )
+  (func (export "type-first-i64") (result i64)
+    (call_indirect (type $over-i64) (i64.const 64) (i32.const 5))
+  )
+  (func (export "type-first-f32") (result f32)
+    (call_indirect (type $over-f32) (f32.const 1.32) (i32.const 6))
+  )
+  (func (export "type-first-f64") (result f64)
+    (call_indirect (type $over-f64) (f64.const 1.64) (i32.const 7))
+  )
+
+  (func (export "type-second-i32") (result i32)
+    (call_indirect (type $f32-i32) (f32.const 32.1) (i32.const 32) (i32.const 8))
+  )
+  (func (export "type-second-i64") (result i64)
+    (call_indirect (type $i32-i64) (i32.const 32) (i64.const 64) (i32.const 9))
+  )
+  (func (export "type-second-f32") (result f32)
+    (call_indirect (type $f64-f32) (f64.const 64) (f32.const 32) (i32.const 10))
+  )
+  (func (export "type-second-f64") (result f64)
+    (call_indirect (type $i64-f64) (i64.const 64) (f64.const 64.1) (i32.const 11))
+  )
+
+  ;; Dispatch
+
+  (func (export "dispatch") (param i32 i64) (result i64)
+    (call_indirect (type $over-i64) (local.get 1) (local.get 0))
+  )
+
+  (func (export "dispatch-structural-i64") (param i32) (result i64)
+    (call_indirect (type $over-i64-duplicate) (i64.const 9) (local.get 0))
+  )
+  (func (export "dispatch-structural-i32") (param i32) (result i32)
+    (call_indirect (type $over-i32-duplicate) (i32.const 9) (local.get 0))
+  )
+  (func (export "dispatch-structural-f32") (param i32) (result f32)
+    (call_indirect (type $over-f32-duplicate) (f32.const 9.0) (local.get 0))
+  )
+  (func (export "dispatch-structural-f64") (param i32) (result f64)
+    (call_indirect (type $over-f64-duplicate) (f64.const 9.0) (local.get 0))
+  )
+
+  ;; Recursion
+
+  (func $fac-i64 (export "fac-i64") (type $over-i64)
+    (if (result i64) (i64.eqz (local.get 0))
+      (then (i64.const 1))
+      (else
+        (i64.mul
+          (local.get 0)
+          (call_indirect (type $over-i64)
+            (i64.sub (local.get 0) (i64.const 1))
+            (i32.const 12)
+          )
+        )
+      )
+    )
+  )
+
+  (func $fib-i64 (export "fib-i64") (type $over-i64)
+    (if (result i64) (i64.le_u (local.get 0) (i64.const 1))
+      (then (i64.const 1))
+      (else
+        (i64.add
+          (call_indirect (type $over-i64)
+            (i64.sub (local.get 0) (i64.const 2))
+            (i32.const 13)
+          )
+          (call_indirect (type $over-i64)
+            (i64.sub (local.get 0) (i64.const 1))
+            (i32.const 13)
+          )
+        )
+      )
+    )
+  )
+
+  (func $fac-i32 (export "fac-i32") (type $over-i32)
+    (if (result i32) (i32.eqz (local.get 0))
+      (then (i32.const 1))
+      (else
+        (i32.mul
+          (local.get 0)
+          (call_indirect (type $over-i32)
+            (i32.sub (local.get 0) (i32.const 1))
+            (i32.const 23)
+          )
+        )
+      )
+    )
+  )
+
+  (func $fac-f32 (export "fac-f32") (type $over-f32)
+    (if (result f32) (f32.eq (local.get 0) (f32.const 0.0))
+      (then (f32.const 1.0))
+      (else
+        (f32.mul
+          (local.get 0)
+          (call_indirect (type $over-f32)
+            (f32.sub (local.get 0) (f32.const 1.0))
+            (i32.const 24)
+          )
+        )
+      )
+    )
+  )
+
+  (func $fac-f64 (export "fac-f64") (type $over-f64)
+    (if (result f64) (f64.eq (local.get 0) (f64.const 0.0))
+      (then (f64.const 1.0))
+      (else
+        (f64.mul
+          (local.get 0)
+          (call_indirect (type $over-f64)
+            (f64.sub (local.get 0) (f64.const 1.0))
+            (i32.const 25)
+          )
+        )
+      )
+    )
+  )
+
+  (func $fib-i32 (export "fib-i32") (type $over-i32)
+    (if (result i32) (i32.le_u (local.get 0) (i32.const 1))
+      (then (i32.const 1))
+      (else
+        (i32.add
+          (call_indirect (type $over-i32)
+            (i32.sub (local.get 0) (i32.const 2))
+            (i32.const 26)
+          )
+          (call_indirect (type $over-i32)
+            (i32.sub (local.get 0) (i32.const 1))
+            (i32.const 26)
+          )
+        )
+      )
+    )
+  )
+
+  (func $fib-f32 (export "fib-f32") (type $over-f32)
+    (if (result f32) (f32.le (local.get 0) (f32.const 1.0))
+      (then (f32.const 1.0))
+      (else
+        (f32.add
+          (call_indirect (type $over-f32)
+            (f32.sub (local.get 0) (f32.const 2.0))
+            (i32.const 27)
+          )
+          (call_indirect (type $over-f32)
+            (f32.sub (local.get 0) (f32.const 1.0))
+            (i32.const 27)
+          )
+        )
+      )
+    )
+  )
+
+  (func $fib-f64 (export "fib-f64") (type $over-f64)
+    (if (result f64) (f64.le (local.get 0) (f64.const 1.0))
+      (then (f64.const 1.0))
+      (else
+        (f64.add
+          (call_indirect (type $over-f64)
+            (f64.sub (local.get 0) (f64.const 2.0))
+            (i32.const 28)
+          )
+          (call_indirect (type $over-f64)
+            (f64.sub (local.get 0) (f64.const 1.0))
+            (i32.const 28)
+          )
+        )
+      )
+    )
+  )
+
+  (func $even (export "even") (param i32) (result i32)
+    (if (result i32) (i32.eqz (local.get 0))
+      (then (i32.const 44))
+      (else
+        (call_indirect (type $over-i32)
+          (i32.sub (local.get 0) (i32.const 1))
+          (i32.const 15)
+        )
+      )
+    )
+  )
+  (func $odd (export "odd") (param i32) (result i32)
+    (if (result i32) (i32.eqz (local.get 0))
+      (then (i32.const 99))
+      (else
+        (call_indirect (type $over-i32)
+          (i32.sub (local.get 0) (i32.const 1))
+          (i32.const 14)
+        )
+      )
+    )
+  )
+
+  ;; Stack exhaustion
+
+  ;; Implementations are required to have every call consume some abstract
+  ;; resource towards exhausting some abstract finite limit, such that
+  ;; infinitely recursive test cases reliably trap in finite time. This is
+  ;; because otherwise applications could come to depend on it on those
+  ;; implementations and be incompatible with implementations that don't do
+  ;; it (or don't do it under the same circumstances).
+
+  (func $runaway (export "runaway") (call_indirect (type $proc) (i32.const 16)))
+
+  (func $mutual-runaway1 (export "mutual-runaway") (call_indirect (type $proc) (i32.const 18)))
+  (func $mutual-runaway2 (call_indirect (type $proc) (i32.const 17)))
+
+  ;; As parameter of control constructs and instructions
+
+  (memory 1)
+
+  (func (export "as-select-first") (result i32)
+    (select (call_indirect (type $out-i32) (i32.const 0)) (i32.const 2) (i32.const 3))
+  )
+  (func (export "as-select-mid") (result i32)
+    (select (i32.const 2) (call_indirect (type $out-i32) (i32.const 0)) (i32.const 3))
+  )
+  (func (export "as-select-last") (result i32)
+    (select (i32.const 2) (i32.const 3) (call_indirect (type $out-i32) (i32.const 0)))
+  )
+
+  (func (export "as-if-condition") (result i32)
+    (if (result i32) (call_indirect (type $out-i32) (i32.const 0)) (then (i32.const 1)) (else (i32.const 2)))
+  )
+
+  (func (export "as-br_if-first") (result i64)
+    (block (result i64) (br_if 0 (call_indirect (type $out-i64) (i32.const 1)) (i32.const 2)))
+  )
+  (func (export "as-br_if-last") (result i32)
+    (block (result i32) (br_if 0 (i32.const 2) (call_indirect (type $out-i32) (i32.const 0))))
+  )
+
+  (func (export "as-br_table-first") (result f32)
+    (block (result f32) (call_indirect (type $out-f32) (i32.const 2)) (i32.const 2) (br_table 0 0))
+  )
+  (func (export "as-br_table-last") (result i32)
+    (block (result i32) (i32.const 2) (call_indirect (type $out-i32) (i32.const 0)) (br_table 0 0))
+  )
+
+  (func (export "as-store-first")
+    (call_indirect (type $out-i32) (i32.const 0)) (i32.const 1) (i32.store)
+  )
+  (func (export "as-store-last")
+    (i32.const 10) (call_indirect (type $out-f64) (i32.const 3)) (f64.store)
+  )
+
+  (func (export "as-memory.grow-value") (result i32)
+    (memory.grow (call_indirect (type $out-i32) (i32.const 0)))
+  )
+  (func (export "as-return-value") (result i32)
+    (call_indirect (type $over-i32) (i32.const 1) (i32.const 4)) (return)
+  )
+  (func (export "as-drop-operand")
+    (call_indirect (type $over-i64) (i64.const 1) (i32.const 5)) (drop)
+  )
+  (func (export "as-br-value") (result f32)
+    (block (result f32) (br 0 (call_indirect (type $over-f32) (f32.const 1) (i32.const 6))))
+  )
+  (func (export "as-local.set-value") (result f64)
+    (local f64) (local.set 0 (call_indirect (type $over-f64) (f64.const 1) (i32.const 7))) (local.get 0)
+  )
+  (func (export "as-local.tee-value") (result f64)
+    (local f64) (local.tee 0 (call_indirect (type $over-f64) (f64.const 1) (i32.const 7)))
+  )
+  (global $a (mut f64) (f64.const 10.0))
+  (func (export "as-global.set-value") (result f64)
+    (global.set $a (call_indirect (type $over-f64) (f64.const 1.0) (i32.const 7)))
+    (global.get $a)
+  )
+
+  (func (export "as-load-operand") (result i32)
+    (i32.load (call_indirect (type $out-i32) (i32.const 0)))
+  )
+
+  (func (export "as-unary-operand") (result f32)
+    (block (result f32)
+      (f32.sqrt
+        (call_indirect (type $over-f32) (f32.const 0x0p+0) (i32.const 6))
+      )
+    )
+  )
+
+  (func (export "as-binary-left") (result i32)
+    (block (result i32)
+      (i32.add
+        (call_indirect (type $over-i32) (i32.const 1) (i32.const 4))
+        (i32.const 10)
+      )
+    )
+  )
+  (func (export "as-binary-right") (result i32)
+    (block (result i32)
+      (i32.sub
+        (i32.const 10)
+        (call_indirect (type $over-i32) (i32.const 1) (i32.const 4))
+      )
+    )
+  )
+
+  (func (export "as-test-operand") (result i32)
+    (block (result i32)
+      (i32.eqz
+        (call_indirect (type $over-i32) (i32.const 1) (i32.const 4))
+      )
+    )
+  )
+
+  (func (export "as-compare-left") (result i32)
+    (block (result i32)
+      (i32.le_u
+        (call_indirect (type $over-i32) (i32.const 1) (i32.const 4))
+        (i32.const 10)
+      )
+    )
+  )
+  (func (export "as-compare-right") (result i32)
+    (block (result i32)
+      (i32.ne
+        (i32.const 10)
+        (call_indirect (type $over-i32) (i32.const 1) (i32.const 4))
+      )
+    )
+  )
+
+  (func (export "as-convert-operand") (result i64)
+    (block (result i64)
+      (i64.extend_i32_s
+        (call_indirect (type $over-i32) (i32.const 1) (i32.const 4))
+      )
+    )
+  )
+
+)
+
+(assert_return (invoke "type-i32") (i32.const 0x132))
+(assert_return (invoke "type-i64") (i64.const 0x164))
+(assert_return (invoke "type-f32") (f32.const 0xf32))
+(assert_return (invoke "type-f64") (f64.const 0xf64))
+
+(assert_return (invoke "type-index") (i64.const 100))
+
+(assert_return (invoke "type-first-i32") (i32.const 32))
+(assert_return (invoke "type-first-i64") (i64.const 64))
+(assert_return (invoke "type-first-f32") (f32.const 1.32))
+(assert_return (invoke "type-first-f64") (f64.const 1.64))
+
+(assert_return (invoke "type-second-i32") (i32.const 32))
+(assert_return (invoke "type-second-i64") (i64.const 64))
+(assert_return (invoke "type-second-f32") (f32.const 32))
+(assert_return (invoke "type-second-f64") (f64.const 64.1))
+
+(assert_return (invoke "dispatch" (i32.const 5) (i64.const 2)) (i64.const 2))
+(assert_return (invoke "dispatch" (i32.const 5) (i64.const 5)) (i64.const 5))
+(assert_return (invoke "dispatch" (i32.const 12) (i64.const 5)) (i64.const 120))
+(assert_return (invoke "dispatch" (i32.const 13) (i64.const 5)) (i64.const 8))
+(assert_return (invoke "dispatch" (i32.const 20) (i64.const 2)) (i64.const 2))
+(assert_trap (invoke "dispatch" (i32.const 0) (i64.const 2)) "indirect call type mismatch")
+(assert_trap (invoke "dispatch" (i32.const 15) (i64.const 2)) "indirect call type mismatch")
+(assert_trap (invoke "dispatch" (i32.const 29) (i64.const 2)) "undefined element")
+(assert_trap (invoke "dispatch" (i32.const -1) (i64.const 2)) "undefined element")
+(assert_trap (invoke "dispatch" (i32.const 1213432423) (i64.const 2)) "undefined element")
+
+(assert_return (invoke "dispatch-structural-i64" (i32.const 5)) (i64.const 9))
+(assert_return (invoke "dispatch-structural-i64" (i32.const 12)) (i64.const 362880))
+(assert_return (invoke "dispatch-structural-i64" (i32.const 13)) (i64.const 55))
+(assert_return (invoke "dispatch-structural-i64" (i32.const 20)) (i64.const 9))
+(assert_trap (invoke "dispatch-structural-i64" (i32.const 11)) "indirect call type mismatch")
+(assert_trap (invoke "dispatch-structural-i64" (i32.const 22)) "indirect call type mismatch")
+
+(assert_return (invoke "dispatch-structural-i32" (i32.const 4)) (i32.const 9))
+(assert_return (invoke "dispatch-structural-i32" (i32.const 23)) (i32.const 362880))
+(assert_return (invoke "dispatch-structural-i32" (i32.const 26)) (i32.const 55))
+(assert_return (invoke "dispatch-structural-i32" (i32.const 19)) (i32.const 9))
+(assert_trap (invoke "dispatch-structural-i32" (i32.const 9)) "indirect call type mismatch")
+(assert_trap (invoke "dispatch-structural-i32" (i32.const 21)) "indirect call type mismatch")
+
+(assert_return (invoke "dispatch-structural-f32" (i32.const 6)) (f32.const 9.0))
+(assert_return (invoke "dispatch-structural-f32" (i32.const 24)) (f32.const 362880.0))
+(assert_return (invoke "dispatch-structural-f32" (i32.const 27)) (f32.const 55.0))
+(assert_return (invoke "dispatch-structural-f32" (i32.const 21)) (f32.const 9.0))
+(assert_trap (invoke "dispatch-structural-f32" (i32.const 8)) "indirect call type mismatch")
+(assert_trap (invoke "dispatch-structural-f32" (i32.const 19)) "indirect call type mismatch")
+
+(assert_return (invoke "dispatch-structural-f64" (i32.const 7)) (f64.const 9.0))
+(assert_return (invoke "dispatch-structural-f64" (i32.const 25)) (f64.const 362880.0))
+(assert_return (invoke "dispatch-structural-f64" (i32.const 28)) (f64.const 55.0))
+(assert_return (invoke "dispatch-structural-f64" (i32.const 22)) (f64.const 9.0))
+(assert_trap (invoke "dispatch-structural-f64" (i32.const 10)) "indirect call type mismatch")
+(assert_trap (invoke "dispatch-structural-f64" (i32.const 18)) "indirect call type mismatch")
+
+(assert_return (invoke "fac-i64" (i64.const 0)) (i64.const 1))
+(assert_return (invoke "fac-i64" (i64.const 1)) (i64.const 1))
+(assert_return (invoke "fac-i64" (i64.const 5)) (i64.const 120))
+(assert_return (invoke "fac-i64" (i64.const 25)) (i64.const 7034535277573963776))
+
+(assert_return (invoke "fac-i32" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "fac-i32" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "fac-i32" (i32.const 5)) (i32.const 120))
+(assert_return (invoke "fac-i32" (i32.const 10)) (i32.const 3628800))
+
+(assert_return (invoke "fac-f32" (f32.const 0.0)) (f32.const 1.0))
+(assert_return (invoke "fac-f32" (f32.const 1.0)) (f32.const 1.0))
+(assert_return (invoke "fac-f32" (f32.const 5.0)) (f32.const 120.0))
+(assert_return (invoke "fac-f32" (f32.const 10.0)) (f32.const 3628800.0))
+
+(assert_return (invoke "fac-f64" (f64.const 0.0)) (f64.const 1.0))
+(assert_return (invoke "fac-f64" (f64.const 1.0)) (f64.const 1.0))
+(assert_return (invoke "fac-f64" (f64.const 5.0)) (f64.const 120.0))
+(assert_return (invoke "fac-f64" (f64.const 10.0)) (f64.const 3628800.0))
+
+(assert_return (invoke "fib-i64" (i64.const 0)) (i64.const 1))
+(assert_return (invoke "fib-i64" (i64.const 1)) (i64.const 1))
+(assert_return (invoke "fib-i64" (i64.const 2)) (i64.const 2))
+(assert_return (invoke "fib-i64" (i64.const 5)) (i64.const 8))
+(assert_return (invoke "fib-i64" (i64.const 20)) (i64.const 10946))
+
+(assert_return (invoke "fib-i32" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "fib-i32" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "fib-i32" (i32.const 2)) (i32.const 2))
+(assert_return (invoke "fib-i32" (i32.const 5)) (i32.const 8))
+(assert_return (invoke "fib-i32" (i32.const 20)) (i32.const 10946))
+
+(assert_return (invoke "fib-f32" (f32.const 0.0)) (f32.const 1.0))
+(assert_return (invoke "fib-f32" (f32.const 1.0)) (f32.const 1.0))
+(assert_return (invoke "fib-f32" (f32.const 2.0)) (f32.const 2.0))
+(assert_return (invoke "fib-f32" (f32.const 5.0)) (f32.const 8.0))
+(assert_return (invoke "fib-f32" (f32.const 20.0)) (f32.const 10946.0))
+
+(assert_return (invoke "fib-f64" (f64.const 0.0)) (f64.const 1.0))
+(assert_return (invoke "fib-f64" (f64.const 1.0)) (f64.const 1.0))
+(assert_return (invoke "fib-f64" (f64.const 2.0)) (f64.const 2.0))
+(assert_return (invoke "fib-f64" (f64.const 5.0)) (f64.const 8.0))
+(assert_return (invoke "fib-f64" (f64.const 20.0)) (f64.const 10946.0))
+
+(assert_return (invoke "even" (i32.const 0)) (i32.const 44))
+(assert_return (invoke "even" (i32.const 1)) (i32.const 99))
+(assert_return (invoke "even" (i32.const 100)) (i32.const 44))
+(assert_return (invoke "even" (i32.const 77)) (i32.const 99))
+(assert_return (invoke "odd" (i32.const 0)) (i32.const 99))
+(assert_return (invoke "odd" (i32.const 1)) (i32.const 44))
+(assert_return (invoke "odd" (i32.const 200)) (i32.const 99))
+(assert_return (invoke "odd" (i32.const 77)) (i32.const 44))
+
+(assert_exhaustion (invoke "runaway") "call stack exhausted")
+(assert_exhaustion (invoke "mutual-runaway") "call stack exhausted")
+
+(assert_return (invoke "as-select-first") (i32.const 0x132))
+(assert_return (invoke "as-select-mid") (i32.const 2))
+(assert_return (invoke "as-select-last") (i32.const 2))
+
+(assert_return (invoke "as-if-condition") (i32.const 1))
+
+(assert_return (invoke "as-br_if-first") (i64.const 0x164))
+(assert_return (invoke "as-br_if-last") (i32.const 2))
+
+(assert_return (invoke "as-br_table-first") (f32.const 0xf32))
+(assert_return (invoke "as-br_table-last") (i32.const 2))
+
+(assert_return (invoke "as-store-first"))
+(assert_return (invoke "as-store-last"))
+
+(assert_return (invoke "as-memory.grow-value") (i32.const 1))
+(assert_return (invoke "as-return-value") (i32.const 1))
+(assert_return (invoke "as-drop-operand"))
+(assert_return (invoke "as-br-value") (f32.const 1))
+(assert_return (invoke "as-local.set-value") (f64.const 1))
+(assert_return (invoke "as-local.tee-value") (f64.const 1))
+(assert_return (invoke "as-global.set-value") (f64.const 1.0))
+(assert_return (invoke "as-load-operand") (i32.const 1))
+
+(assert_return (invoke "as-unary-operand") (f32.const 0x0p+0))
+(assert_return (invoke "as-binary-left") (i32.const 11))
+(assert_return (invoke "as-binary-right") (i32.const 9))
+(assert_return (invoke "as-test-operand") (i32.const 0))
+(assert_return (invoke "as-compare-left") (i32.const 1))
+(assert_return (invoke "as-compare-right") (i32.const 1))
+(assert_return (invoke "as-convert-operand") (i64.const 1))
+
+
+;; Multiple tables
+
+(module
+  (type $ii-i (func (param i32 i32) (result i32)))
+
+  (table $t1 funcref (elem $f $g))
+  (table $t2 funcref (elem $h $i $j))
+  (table $t3 4 funcref)
+  (elem (table $t3) (i32.const 0) func $g $h)
+  (elem (table $t3) (i32.const 3) func $z)
+
+  (func $f (type $ii-i) (i32.add (local.get 0) (local.get 1)))
+  (func $g (type $ii-i) (i32.sub (local.get 0) (local.get 1)))
+  (func $h (type $ii-i) (i32.mul (local.get 0) (local.get 1)))
+  (func $i (type $ii-i) (i32.div_u (local.get 0) (local.get 1)))
+  (func $j (type $ii-i) (i32.rem_u (local.get 0) (local.get 1)))
+  (func $z)
+
+  (func (export "call-1") (param i32 i32 i32) (result i32)
+    (call_indirect $t1 (type $ii-i) (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "call-2") (param i32 i32 i32) (result i32)
+    (call_indirect $t2 (type $ii-i) (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "call-3") (param i32 i32 i32) (result i32)
+    (call_indirect $t3 (type $ii-i) (local.get 0) (local.get 1) (local.get 2))
+  )
+)
+
+(assert_return (invoke "call-1" (i32.const 2) (i32.const 3) (i32.const 0)) (i32.const 5))
+(assert_return (invoke "call-1" (i32.const 2) (i32.const 3) (i32.const 1)) (i32.const -1))
+(assert_trap (invoke "call-1" (i32.const 2) (i32.const 3) (i32.const 2)) "undefined element")
+
+(assert_return (invoke "call-2" (i32.const 2) (i32.const 3) (i32.const 0)) (i32.const 6))
+(assert_return (invoke "call-2" (i32.const 2) (i32.const 3) (i32.const 1)) (i32.const 0))
+(assert_return (invoke "call-2" (i32.const 2) (i32.const 3) (i32.const 2)) (i32.const 2))
+(assert_trap (invoke "call-2" (i32.const 2) (i32.const 3) (i32.const 3)) "undefined element")
+
+(assert_return (invoke "call-3" (i32.const 2) (i32.const 3) (i32.const 0)) (i32.const -1))
+(assert_return (invoke "call-3" (i32.const 2) (i32.const 3) (i32.const 1)) (i32.const 6))
+(assert_trap (invoke "call-3" (i32.const 2) (i32.const 3) (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "call-3" (i32.const 2) (i32.const 3) (i32.const 3)) "indirect call type mismatch")
+(assert_trap (invoke "call-3" (i32.const 2) (i32.const 3) (i32.const 4)) "undefined element")
+
+
+;; Invalid syntax
+
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (type $sig) (result i32) (param i32)"
+    "    (i32.const 0) (i32.const 0)"
+    "  )"
+    ")"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (param i32) (type $sig) (result i32)"
+    "    (i32.const 0) (i32.const 0)"
+    "  )"
+    ")"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (param i32) (result i32) (type $sig)"
+    "    (i32.const 0) (i32.const 0)"
+    "  )"
+    ")"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (result i32) (type $sig) (param i32)"
+    "    (i32.const 0) (i32.const 0)"
+    "  )"
+    ")"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (result i32) (param i32) (type $sig)"
+    "    (i32.const 0) (i32.const 0)"
+    "  )"
+    ")"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (result i32) (param i32) (i32.const 0) (i32.const 0))"
+    ")"
+  )
+  "unexpected token"
+)
+
+(assert_malformed
+  (module quote
+    "(table 0 funcref)"
+    "(func (call_indirect (param $x i32) (i32.const 0) (i32.const 0)))"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func))"
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (type $sig) (result i32) (i32.const 0))"
+    ")"
+  )
+  "inline function type"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (type $sig) (result i32) (i32.const 0))"
+    ")"
+  )
+  "inline function type"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(table 0 funcref)"
+    "(func"
+    "  (call_indirect (type $sig) (param i32) (i32.const 0) (i32.const 0))"
+    ")"
+  )
+  "inline function type"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32 i32) (result i32)))"
+    "(table 0 funcref)"
+    "(func (result i32)"
+    "  (call_indirect (type $sig) (param i32) (result i32)"
+    "    (i32.const 0) (i32.const 0)"
+    "  )"
+    ")"
+  )
+  "inline function type"
+)
+
+;; Invalid typing
+
+(assert_invalid
+  (module
+    (type (func))
+    (func $no-table (call_indirect (type 0) (i32.const 0)))
+  )
+  "unknown table"
+)
+
+(assert_invalid
+  (module
+    (type (func))
+    (table 0 funcref)
+    (func $type-void-vs-num (i32.eqz (call_indirect (type 0) (i32.const 0))))
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (type (func (result i64)))
+    (table 0 funcref)
+    (func $type-num-vs-num (i32.eqz (call_indirect (type 0) (i32.const 0))))
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (type (func (param i32)))
+    (table 0 funcref)
+    (func $arity-0-vs-1 (call_indirect (type 0) (i32.const 0)))
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (type (func (param f64 i32)))
+    (table 0 funcref)
+    (func $arity-0-vs-2 (call_indirect (type 0) (i32.const 0)))
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (type (func))
+    (table 0 funcref)
+    (func $arity-1-vs-0 (call_indirect (type 0) (i32.const 1) (i32.const 0)))
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (type (func))
+    (table 0 funcref)
+    (func $arity-2-vs-0
+      (call_indirect (type 0) (f64.const 2) (i32.const 1) (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (type (func (param i32)))
+    (table 0 funcref)
+    (func $type-func-void-vs-i32 (call_indirect (type 0) (i32.const 1) (nop)))
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (type (func (param i32)))
+    (table 0 funcref)
+    (func $type-func-num-vs-i32 (call_indirect (type 0) (i32.const 0) (i64.const 1)))
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (type (func (param i32 i32)))
+    (table 0 funcref)
+    (func $type-first-void-vs-num
+      (call_indirect (type 0) (nop) (i32.const 1) (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (type (func (param i32 i32)))
+    (table 0 funcref)
+    (func $type-second-void-vs-num
+      (call_indirect (type 0) (i32.const 1) (nop) (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (type (func (param i32 f64)))
+    (table 0 funcref)
+    (func $type-first-num-vs-num
+      (call_indirect (type 0) (f64.const 1) (i32.const 1) (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (type (func (param f64 i32)))
+    (table 0 funcref)
+    (func $type-second-num-vs-num
+      (call_indirect (type 0) (i32.const 1) (f64.const 1) (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (func $f (param i32))
+    (type $sig (func (param i32)))
+    (table funcref (elem $f))
+    (func $type-first-empty-in-block
+      (block
+        (call_indirect (type $sig) (i32.const 0))
+      )
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $f (param i32 i32))
+    (type $sig (func (param i32 i32)))
+    (table funcref (elem $f))
+    (func $type-second-empty-in-block
+      (block
+        (call_indirect (type $sig) (i32.const 0) (i32.const 0))
+      )
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $f (param i32))
+    (type $sig (func (param i32)))
+    (table funcref (elem $f))
+    (func $type-first-empty-in-loop
+      (loop
+        (call_indirect (type $sig) (i32.const 0))
+      )
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $f (param i32 i32))
+    (type $sig (func (param i32 i32)))
+    (table funcref (elem $f))
+    (func $type-second-empty-in-loop
+      (loop
+        (call_indirect (type $sig) (i32.const 0) (i32.const 0))
+      )
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $f (param i32))
+    (type $sig (func (param i32)))
+    (table funcref (elem $f))
+    (func $type-first-empty-in-then
+      (i32.const 0) (i32.const 0)
+      (if
+        (then
+          (call_indirect (type $sig) (i32.const 0))
+        )
+      )
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $f (param i32 i32))
+    (type $sig (func (param i32 i32)))
+    (table funcref (elem $f))
+    (func $type-second-empty-in-then
+      (i32.const 0) (i32.const 0)
+      (if
+        (then
+          (call_indirect (type $sig) (i32.const 0) (i32.const 0))
+        )
+      )
+    )
+  )
+  "type mismatch"
+)
+
+
+;; Unbound type
+
+(assert_invalid
+  (module
+    (table 0 funcref)
+    (func $unbound-type (call_indirect (type 1) (i32.const 0)))
+  )
+  "unknown type"
+)
+(assert_invalid
+  (module
+    (table 0 funcref)
+    (func $large-type (call_indirect (type 1012321300) (i32.const 0)))
+  )
+  "unknown type"
+)
+
+
+;; Unbound function in table
+
+(assert_invalid
+  (module (table funcref (elem 0 0)))
+  "unknown function"
+)
diff --git a/tests/wast/reference-types/custom.wast b/tests/wast/reference-types/custom.wast
new file mode 100644
index 00000000..b2394f5e
--- /dev/null
+++ b/tests/wast/reference-types/custom.wast
@@ -0,0 +1,130 @@
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\00\24\10" "a custom section" "this is the payload"
+  "\00\20\10" "a custom section" "this is payload"
+  "\00\11\10" "a custom section" ""
+  "\00\10\00" "" "this is payload"
+  "\00\01\00" "" ""
+  "\00\24\10" "\00\00custom sectio\00" "this is the payload"
+  "\00\24\10" "\ef\bb\bfa custom sect" "this is the payload"
+  "\00\24\10" "a custom sect\e2\8c\a3" "this is the payload"
+  "\00\1f\16" "module within a module" "\00asm" "\01\00\00\00"
+)
+
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\01\01\00"  ;; type section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\02\01\00"  ;; import section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\03\01\00"  ;; function section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\04\01\00"  ;; table section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\05\01\00"  ;; memory section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\06\01\00"  ;; global section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\07\01\00"  ;; export section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\09\01\00"  ;; element section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\0a\01\00"  ;; code section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+  "\0b\01\00"  ;; data section
+  "\00\0e\06" "custom" "payload"
+  "\00\0e\06" "custom" "payload"
+)
+
+(module binary
+  "\00asm" "\01\00\00\00"
+  "\01\07\01\60\02\7f\7f\01\7f"                ;; type section
+  "\00\1a\06" "custom" "this is the payload"   ;; custom section
+  "\03\02\01\00"                               ;; function section
+  "\07\0a\01\06\61\64\64\54\77\6f\00\00"       ;; export section
+  "\0a\09\01\07\00\20\00\20\01\6a\0b"          ;; code section
+  "\00\1b\07" "custom2" "this is the payload"  ;; custom section
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00"
+  )
+  "unexpected end"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\00"
+  )
+  "unexpected end"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\00\00\05\01\00\07\00\00"
+  )
+  "unexpected end"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\26\10" "a custom section" "this is the payload"
+  )
+  "unexpected end"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\25\10" "a custom section" "this is the payload"
+    "\00\24\10" "a custom section" "this is the payload"
+  )
+  "malformed section id"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\01\07\01\60\02\7f\7f\01\7f"                         ;; type section
+    "\00\25\10" "a custom section" "this is the payload"  ;; wrong length!
+    "\03\02\01\00"                                        ;; function section
+    "\0a\09\01\07\00\20\00\20\01\6a\0b"                   ;; code section
+    "\00\1b\07" "custom2" "this is the payload"           ;; custom section
+  )
+  "function and code section have inconsistent lengths"
+)
+
+;; Test concatenated modules.
+(assert_malformed
+  (module binary
+    "\00asm\01\00\00\00"
+    "\00asm\01\00\00\00"
+  )
+  "length out of bounds"
+)
+
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\05\03\01\00\01"                         ;; memory section
+    "\0c\01\02"                               ;; data count section (2 segments)
+    "\0b\06\01\00\41\00\0b\00"                ;; data section (1 segment)
+  )
+  "data count and data section have inconsistent lengths"
+)
diff --git a/tests/wast/reference-types/elem.wast b/tests/wast/reference-types/elem.wast
new file mode 100644
index 00000000..d0537aa2
--- /dev/null
+++ b/tests/wast/reference-types/elem.wast
@@ -0,0 +1,468 @@
+;; Test the element section
+
+;; Syntax
+(module
+  (table $t 10 funcref)
+  (func $f)
+  (func $g)
+
+  ;; Passive
+  (elem funcref)
+  (elem funcref (ref.func $f) (item ref.func $f) (item (ref.null func)) (ref.func $g))
+  (elem func)
+  (elem func $f $f $g $g)
+
+  (elem $p1 funcref)
+  (elem $p2 funcref (ref.func $f) (ref.func $f) (ref.null func) (ref.func $g))
+  (elem $p3 func)
+  (elem $p4 func $f $f $g $g)
+
+  ;; Active
+  (elem (table $t) (i32.const 0) funcref)
+  (elem (table $t) (i32.const 0) funcref (ref.func $f) (ref.null func))
+  (elem (table $t) (i32.const 0) func)
+  (elem (table $t) (i32.const 0) func $f $g)
+  (elem (table $t) (offset (i32.const 0)) funcref)
+  (elem (table $t) (offset (i32.const 0)) func $f $g)
+  (elem (table 0) (i32.const 0) func)
+  (elem (table 0x0) (i32.const 0) func $f $f)
+  (elem (table 0x000) (offset (i32.const 0)) func)
+  (elem (table 0) (offset (i32.const 0)) func $f $f)
+  (elem (table $t) (i32.const 0) func)
+  (elem (table $t) (i32.const 0) func $f $f)
+  (elem (table $t) (offset (i32.const 0)) func)
+  (elem (table $t) (offset (i32.const 0)) func $f $f)
+  (elem (offset (i32.const 0)))
+  (elem (offset (i32.const 0)) funcref (ref.func $f) (ref.null func))
+  (elem (offset (i32.const 0)) func $f $f)
+  (elem (offset (i32.const 0)) $f $f)
+  (elem (i32.const 0))
+  (elem (i32.const 0) funcref (ref.func $f) (ref.null func))
+  (elem (i32.const 0) func $f $f)
+  (elem (i32.const 0) $f $f)
+
+  (elem $a1 (table $t) (i32.const 0) funcref)
+  (elem $a2 (table $t) (i32.const 0) funcref (ref.func $f) (ref.null func))
+  (elem $a3 (table $t) (i32.const 0) func)
+  (elem $a4 (table $t) (i32.const 0) func $f $g)
+  (elem $a9 (table $t) (offset (i32.const 0)) funcref)
+  (elem $a10 (table $t) (offset (i32.const 0)) func $f $g)
+  (elem $a11 (table 0) (i32.const 0) func)
+  (elem $a12 (table 0x0) (i32.const 0) func $f $f)
+  (elem $a13 (table 0x000) (offset (i32.const 0)) func)
+  (elem $a14 (table 0) (offset (i32.const 0)) func $f $f)
+  (elem $a15 (table $t) (i32.const 0) func)
+  (elem $a16 (table $t) (i32.const 0) func $f $f)
+  (elem $a17 (table $t) (offset (i32.const 0)) func)
+  (elem $a18 (table $t) (offset (i32.const 0)) func $f $f)
+  (elem $a19 (offset (i32.const 0)))
+  (elem $a20 (offset (i32.const 0)) funcref (ref.func $f) (ref.null func))
+  (elem $a21 (offset (i32.const 0)) func $f $f)
+  (elem $a22 (offset (i32.const 0)) $f $f)
+  (elem $a23 (i32.const 0))
+  (elem $a24 (i32.const 0) funcref (ref.func $f) (ref.null func))
+  (elem $a25 (i32.const 0) func $f $f)
+  (elem $a26 (i32.const 0) $f $f)
+
+  ;; Declarative
+  (elem declare funcref)
+  (elem declare funcref (ref.func $f) (ref.func $f) (ref.null func) (ref.func $g))
+  (elem declare func)
+  (elem declare func $f $f $g $g)
+
+  (elem $d1 declare funcref)
+  (elem $d2 declare funcref (ref.func $f) (ref.func $f) (ref.null func) (ref.func $g))
+  (elem $d3 declare func)
+  (elem $d4 declare func $f $f $g $g)
+)
+
+(module
+  (func $f)
+  (func $g)
+
+  (table $t funcref (elem (ref.func $f) (ref.null func) (ref.func $g)))
+)
+
+
+;; Basic use
+
+(module
+  (table 10 funcref)
+  (func $f)
+  (elem (i32.const 0) $f)
+)
+(module
+  (import "spectest" "table" (table 10 funcref))
+  (func $f)
+  (elem (i32.const 0) $f)
+)
+
+(module
+  (table 10 funcref)
+  (func $f)
+  (elem (i32.const 0) $f)
+  (elem (i32.const 3) $f)
+  (elem (i32.const 7) $f)
+  (elem (i32.const 5) $f)
+  (elem (i32.const 3) $f)
+)
+(module
+  (import "spectest" "table" (table 10 funcref))
+  (func $f)
+  (elem (i32.const 9) $f)
+  (elem (i32.const 3) $f)
+  (elem (i32.const 7) $f)
+  (elem (i32.const 3) $f)
+  (elem (i32.const 5) $f)
+)
+
+(module
+  (global (import "spectest" "global_i32") i32)
+  (table 1000 funcref)
+  (func $f)
+  (elem (global.get 0) $f)
+)
+
+(module
+  (global $g (import "spectest" "global_i32") i32)
+  (table 1000 funcref)
+  (func $f)
+  (elem (global.get $g) $f)
+)
+
+(module
+  (type $out-i32 (func (result i32)))
+  (table 10 funcref)
+  (elem (i32.const 7) $const-i32-a)
+  (elem (i32.const 9) $const-i32-b)
+  (func $const-i32-a (type $out-i32) (i32.const 65))
+  (func $const-i32-b (type $out-i32) (i32.const 66))
+  (func (export "call-7") (type $out-i32)
+    (call_indirect (type $out-i32) (i32.const 7))
+  )
+  (func (export "call-9") (type $out-i32)
+    (call_indirect (type $out-i32) (i32.const 9))
+  )
+)
+(assert_return (invoke "call-7") (i32.const 65))
+(assert_return (invoke "call-9") (i32.const 66))
+
+;; Corner cases
+
+(module
+  (table 10 funcref)
+  (func $f)
+  (elem (i32.const 9) $f)
+)
+(module
+  (import "spectest" "table" (table 10 funcref))
+  (func $f)
+  (elem (i32.const 9) $f)
+)
+
+(module
+  (table 0 funcref)
+  (elem (i32.const 0))
+)
+(module
+  (import "spectest" "table" (table 0 funcref))
+  (elem (i32.const 0))
+)
+
+(module
+  (table 0 0 funcref)
+  (elem (i32.const 0))
+)
+
+(module
+  (table 20 funcref)
+  (elem (i32.const 20))
+)
+
+(module
+  (import "spectest" "table" (table 0 funcref))
+  (func $f)
+  (elem (i32.const 0) $f)
+)
+
+(module
+  (import "spectest" "table" (table 0 100 funcref))
+  (func $f)
+  (elem (i32.const 0) $f)
+)
+
+(module
+  (import "spectest" "table" (table 0 funcref))
+  (func $f)
+  (elem (i32.const 1) $f)
+)
+
+(module
+  (import "spectest" "table" (table 0 30 funcref))
+  (func $f)
+  (elem (i32.const 1) $f)
+)
+
+;; Invalid bounds for elements
+
+(assert_trap
+  (module
+    (table 0 funcref)
+    (func $f)
+    (elem (i32.const 0) $f)
+  )
+  "out of bounds"
+)
+
+(assert_trap
+  (module
+    (table 0 0 funcref)
+    (func $f)
+    (elem (i32.const 0) $f)
+  )
+  "out of bounds"
+)
+
+(assert_trap
+  (module
+    (table 0 1 funcref)
+    (func $f)
+    (elem (i32.const 0) $f)
+  )
+  "out of bounds"
+)
+
+(assert_trap
+  (module
+    (table 0 funcref)
+    (elem (i32.const 1))
+  )
+  "out of bounds"
+)
+(assert_trap
+  (module
+    (table 10 funcref)
+    (func $f)
+    (elem (i32.const 10) $f)
+  )
+  "out of bounds"
+)
+(assert_trap
+  (module
+    (import "spectest" "table" (table 10 funcref))
+    (func $f)
+    (elem (i32.const 10) $f)
+  )
+  "out of bounds"
+)
+
+(assert_trap
+  (module
+    (table 10 20 funcref)
+    (func $f)
+    (elem (i32.const 10) $f)
+  )
+  "out of bounds"
+)
+(assert_trap
+  (module
+    (import "spectest" "table" (table 10 funcref))
+    (func $f)
+    (elem (i32.const 10) $f)
+  )
+  "out of bounds"
+)
+
+(assert_trap
+  (module
+    (table 10 funcref)
+    (func $f)
+    (elem (i32.const -1) $f)
+  )
+  "out of bounds"
+)
+(assert_trap
+  (module
+    (import "spectest" "table" (table 10 funcref))
+    (func $f)
+    (elem (i32.const -1) $f)
+  )
+  "out of bounds"
+)
+
+(assert_trap
+  (module
+    (table 10 funcref)
+    (func $f)
+    (elem (i32.const -10) $f)
+  )
+  "out of bounds"
+)
+(assert_trap
+  (module
+    (import "spectest" "table" (table 10 funcref))
+    (func $f)
+    (elem (i32.const -10) $f)
+  )
+  "out of bounds"
+)
+
+;; Implicitly dropped elements
+
+(module
+  (table 10 funcref)
+  (elem $e (i32.const 0) func $f)
+  (func $f)
+  (func (export "init")
+    (table.init $e (i32.const 0) (i32.const 0) (i32.const 1))
+  )
+)
+(assert_trap (invoke "init") "out of bounds")
+
+(module
+  (table 10 funcref)
+  (elem $e declare func $f)
+  (func $f)
+  (func (export "init")
+    (table.init $e (i32.const 0) (i32.const 0) (i32.const 1))
+  )
+)
+(assert_trap (invoke "init") "out of bounds")
+
+;; Element without table
+
+(assert_invalid
+  (module
+    (func $f)
+    (elem (i32.const 0) $f)
+  )
+  "unknown table"
+)
+
+;; Invalid offsets
+
+(assert_invalid
+  (module
+    (table 1 funcref)
+    (elem (i64.const 0))
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table 1 funcref)
+    (elem (i32.ctz (i32.const 0)))
+  )
+  "constant expression required"
+)
+
+(assert_invalid
+  (module
+    (table 1 funcref)
+    (elem (nop))
+  )
+  "constant expression required"
+)
+
+(assert_invalid
+  (module
+    (table 1 funcref)
+    (elem (offset (nop) (i32.const 0)))
+  )
+  "constant expression required"
+)
+
+(assert_invalid
+  (module
+    (table 1 funcref)
+    (elem (offset (i32.const 0) (nop)))
+  )
+  "constant expression required"
+)
+
+;; Use of internal globals in constant expressions is not allowed in MVP.
+;; (assert_invalid
+;;   (module (memory 1) (data (global.get $g)) (global $g (mut i32) (i32.const 0)))
+;;   "constant expression required"
+;; )
+
+;; Two elements target the same slot
+
+(module
+  (type $out-i32 (func (result i32)))
+  (table 10 funcref)
+  (elem (i32.const 9) $const-i32-a)
+  (elem (i32.const 9) $const-i32-b)
+  (func $const-i32-a (type $out-i32) (i32.const 65))
+  (func $const-i32-b (type $out-i32) (i32.const 66))
+  (func (export "call-overwritten") (type $out-i32)
+    (call_indirect (type $out-i32) (i32.const 9))
+  )
+)
+(assert_return (invoke "call-overwritten") (i32.const 66))
+
+(module
+  (type $out-i32 (func (result i32)))
+  (import "spectest" "table" (table 10 funcref))
+  (elem (i32.const 9) $const-i32-a)
+  (elem (i32.const 9) $const-i32-b)
+  (func $const-i32-a (type $out-i32) (i32.const 65))
+  (func $const-i32-b (type $out-i32) (i32.const 66))
+  (func (export "call-overwritten-element") (type $out-i32)
+    (call_indirect (type $out-i32) (i32.const 9))
+  )
+)
+(assert_return (invoke "call-overwritten-element") (i32.const 66))
+
+;; Element sections across multiple modules change the same table
+
+(module $module1
+  (type $out-i32 (func (result i32)))
+  (table (export "shared-table") 10 funcref)
+  (elem (i32.const 8) $const-i32-a)
+  (elem (i32.const 9) $const-i32-b)
+  (func $const-i32-a (type $out-i32) (i32.const 65))
+  (func $const-i32-b (type $out-i32) (i32.const 66))
+  (func (export "call-7") (type $out-i32)
+    (call_indirect (type $out-i32) (i32.const 7))
+  )
+  (func (export "call-8") (type $out-i32)
+    (call_indirect (type $out-i32) (i32.const 8))
+  )
+  (func (export "call-9") (type $out-i32)
+    (call_indirect (type $out-i32) (i32.const 9))
+  )
+)
+
+(register "module1" $module1)
+
+(assert_trap (invoke $module1 "call-7") "uninitialized element")
+(assert_return (invoke $module1 "call-8") (i32.const 65))
+(assert_return (invoke $module1 "call-9") (i32.const 66))
+
+(module $module2
+  (type $out-i32 (func (result i32)))
+  (import "module1" "shared-table" (table 10 funcref))
+  (elem (i32.const 7) $const-i32-c)
+  (elem (i32.const 8) $const-i32-d)
+  (func $const-i32-c (type $out-i32) (i32.const 67))
+  (func $const-i32-d (type $out-i32) (i32.const 68))
+)
+
+(assert_return (invoke $module1 "call-7") (i32.const 67))
+(assert_return (invoke $module1 "call-8") (i32.const 68))
+(assert_return (invoke $module1 "call-9") (i32.const 66))
+
+(module $module3
+  (type $out-i32 (func (result i32)))
+  (import "module1" "shared-table" (table 10 funcref))
+  (elem (i32.const 8) $const-i32-e)
+  (elem (i32.const 9) $const-i32-f)
+  (func $const-i32-e (type $out-i32) (i32.const 69))
+  (func $const-i32-f (type $out-i32) (i32.const 70))
+)
+
+(assert_return (invoke $module1 "call-7") (i32.const 67))
+(assert_return (invoke $module1 "call-8") (i32.const 69))
+(assert_return (invoke $module1 "call-9") (i32.const 70))
diff --git a/tests/wast/reference-types/func.wast b/tests/wast/reference-types/func.wast
new file mode 100644
index 00000000..263440a2
--- /dev/null
+++ b/tests/wast/reference-types/func.wast
@@ -0,0 +1,683 @@
+;; Test `func` declarations, i.e. functions
+
+(module
+  ;; Auxiliary definition
+  (type $sig (func))
+  (func $dummy)
+
+  ;; Syntax
+
+  (func)
+  (func (export "f"))
+  (func $f)
+  (func $h (export "g"))
+
+  (func (local))
+  (func (local) (local))
+  (func (local i32))
+  (func (local $x i32))
+  (func (local i32 f64 i64))
+  (func (local i32) (local f64))
+  (func (local i32 f32) (local $x i64) (local) (local i32 f64))
+
+  (func (param))
+  (func (param) (param))
+  (func (param i32))
+  (func (param $x i32))
+  (func (param i32 f64 i64))
+  (func (param i32) (param f64))
+  (func (param i32 f32) (param $x i64) (param) (param i32 f64))
+
+  (func (result i32) (unreachable))
+
+  (type $sig-1 (func))
+  (type $sig-2 (func (result i32)))
+  (type $sig-3 (func (param $x i32)))
+  (type $sig-4 (func (param i32 f64 i32) (result i32)))
+
+  (func (export "type-use-1") (type $sig-1))
+  (func (export "type-use-2") (type $sig-2) (i32.const 0))
+  (func (export "type-use-3") (type $sig-3))
+  (func (export "type-use-4") (type $sig-4) (i32.const 0))
+  (func (export "type-use-5") (type $sig-2) (result i32) (i32.const 0))
+  (func (export "type-use-6") (type $sig-3) (param i32))
+  (func (export "type-use-7")
+    (type $sig-4) (param i32) (param f64 i32) (result i32) (i32.const 0)
+  )
+
+  (func (type $sig))
+  (func (type $forward))  ;; forward reference
+
+  (func $complex
+    (param i32 f32) (param $x i64) (param) (param i32)
+    (result) (result i32) (result)
+    (local f32) (local $y i32) (local i64 i32) (local) (local f64 i32)
+    (unreachable) (unreachable)
+  )
+  (func $complex-sig
+    (type $sig)
+    (local f32) (local $y i32) (local i64 i32) (local) (local f64 i32)
+    (unreachable) (unreachable)
+  )
+
+  (type $forward (func))
+
+  ;; Typing of locals
+
+  (func (export "local-first-i32") (result i32) (local i32 i32) (local.get 0))
+  (func (export "local-first-i64") (result i64) (local i64 i64) (local.get 0))
+  (func (export "local-first-f32") (result f32) (local f32 f32) (local.get 0))
+  (func (export "local-first-f64") (result f64) (local f64 f64) (local.get 0))
+  (func (export "local-second-i32") (result i32) (local i32 i32) (local.get 1))
+  (func (export "local-second-i64") (result i64) (local i64 i64) (local.get 1))
+  (func (export "local-second-f32") (result f32) (local f32 f32) (local.get 1))
+  (func (export "local-second-f64") (result f64) (local f64 f64) (local.get 1))
+  (func (export "local-mixed") (result f64)
+    (local f32) (local $x i32) (local i64 i32) (local) (local f64 i32)
+    (drop (f32.neg (local.get 0)))
+    (drop (i32.eqz (local.get 1)))
+    (drop (i64.eqz (local.get 2)))
+    (drop (i32.eqz (local.get 3)))
+    (drop (f64.neg (local.get 4)))
+    (drop (i32.eqz (local.get 5)))
+    (local.get 4)
+  )
+
+  ;; Typing of parameters
+
+  (func (export "param-first-i32") (param i32 i32) (result i32) (local.get 0))
+  (func (export "param-first-i64") (param i64 i64) (result i64) (local.get 0))
+  (func (export "param-first-f32") (param f32 f32) (result f32) (local.get 0))
+  (func (export "param-first-f64") (param f64 f64) (result f64) (local.get 0))
+  (func (export "param-second-i32") (param i32 i32) (result i32) (local.get 1))
+  (func (export "param-second-i64") (param i64 i64) (result i64) (local.get 1))
+  (func (export "param-second-f32") (param f32 f32) (result f32) (local.get 1))
+  (func (export "param-second-f64") (param f64 f64) (result f64) (local.get 1))
+  (func (export "param-mixed") (param f32 i32) (param) (param $x i64) (param i32 f64 i32)
+    (result f64)
+    (drop (f32.neg (local.get 0)))
+    (drop (i32.eqz (local.get 1)))
+    (drop (i64.eqz (local.get 2)))
+    (drop (i32.eqz (local.get 3)))
+    (drop (f64.neg (local.get 4)))
+    (drop (i32.eqz (local.get 5)))
+    (local.get 4)
+  )
+
+  ;; Typing of result
+
+  (func (export "empty"))
+  (func (export "value-void") (call $dummy))
+  (func (export "value-i32") (result i32) (i32.const 77))
+  (func (export "value-i64") (result i64) (i64.const 7777))
+  (func (export "value-f32") (result f32) (f32.const 77.7))
+  (func (export "value-f64") (result f64) (f64.const 77.77))
+  (func (export "value-block-void") (block (call $dummy) (call $dummy)))
+  (func (export "value-block-i32") (result i32)
+    (block (result i32) (call $dummy) (i32.const 77))
+  )
+
+  (func (export "return-empty") (return))
+  (func (export "return-i32") (result i32) (return (i32.const 78)))
+  (func (export "return-i64") (result i64) (return (i64.const 7878)))
+  (func (export "return-f32") (result f32) (return (f32.const 78.7)))
+  (func (export "return-f64") (result f64) (return (f64.const 78.78)))
+  (func (export "return-block-i32") (result i32)
+    (return (block (result i32) (call $dummy) (i32.const 77)))
+  )
+
+  (func (export "break-empty") (br 0))
+  (func (export "break-i32") (result i32) (br 0 (i32.const 79)))
+  (func (export "break-i64") (result i64) (br 0 (i64.const 7979)))
+  (func (export "break-f32") (result f32) (br 0 (f32.const 79.9)))
+  (func (export "break-f64") (result f64) (br 0 (f64.const 79.79)))
+  (func (export "break-block-i32") (result i32)
+    (br 0 (block (result i32) (call $dummy) (i32.const 77)))
+  )
+
+  (func (export "break-br_if-empty") (param i32)
+    (br_if 0 (local.get 0))
+  )
+  (func (export "break-br_if-num") (param i32) (result i32)
+    (drop (br_if 0 (i32.const 50) (local.get 0))) (i32.const 51)
+  )
+
+  (func (export "break-br_table-empty") (param i32)
+    (br_table 0 0 0 (local.get 0))
+  )
+  (func (export "break-br_table-num") (param i32) (result i32)
+    (br_table 0 0 (i32.const 50) (local.get 0)) (i32.const 51)
+  )
+  (func (export "break-br_table-nested-empty") (param i32)
+    (block (br_table 0 1 0 (local.get 0)))
+  )
+  (func (export "break-br_table-nested-num") (param i32) (result i32)
+    (i32.add
+      (block (result i32)
+        (br_table 0 1 0 (i32.const 50) (local.get 0)) (i32.const 51)
+      )
+      (i32.const 2)
+    )
+  )
+
+  ;; Default initialization of locals
+
+  (func (export "init-local-i32") (result i32) (local i32) (local.get 0))
+  (func (export "init-local-i64") (result i64) (local i64) (local.get 0))
+  (func (export "init-local-f32") (result f32) (local f32) (local.get 0))
+  (func (export "init-local-f64") (result f64) (local f64) (local.get 0))
+)
+
+(assert_return (invoke "type-use-1"))
+(assert_return (invoke "type-use-2") (i32.const 0))
+(assert_return (invoke "type-use-3" (i32.const 1)))
+(assert_return
+  (invoke "type-use-4" (i32.const 1) (f64.const 1) (i32.const 1))
+  (i32.const 0)
+)
+(assert_return (invoke "type-use-5") (i32.const 0))
+(assert_return (invoke "type-use-6" (i32.const 1)))
+(assert_return
+  (invoke "type-use-7" (i32.const 1) (f64.const 1) (i32.const 1))
+  (i32.const 0)
+)
+
+(assert_return (invoke "local-first-i32") (i32.const 0))
+(assert_return (invoke "local-first-i64") (i64.const 0))
+(assert_return (invoke "local-first-f32") (f32.const 0))
+(assert_return (invoke "local-first-f64") (f64.const 0))
+(assert_return (invoke "local-second-i32") (i32.const 0))
+(assert_return (invoke "local-second-i64") (i64.const 0))
+(assert_return (invoke "local-second-f32") (f32.const 0))
+(assert_return (invoke "local-second-f64") (f64.const 0))
+(assert_return (invoke "local-mixed") (f64.const 0))
+
+(assert_return
+  (invoke "param-first-i32" (i32.const 2) (i32.const 3)) (i32.const 2)
+)
+(assert_return
+  (invoke "param-first-i64" (i64.const 2) (i64.const 3)) (i64.const 2)
+)
+(assert_return
+  (invoke "param-first-f32" (f32.const 2) (f32.const 3)) (f32.const 2)
+)
+(assert_return
+  (invoke "param-first-f64" (f64.const 2) (f64.const 3)) (f64.const 2)
+)
+(assert_return
+  (invoke "param-second-i32" (i32.const 2) (i32.const 3)) (i32.const 3)
+)
+(assert_return
+  (invoke "param-second-i64" (i64.const 2) (i64.const 3)) (i64.const 3)
+)
+(assert_return
+  (invoke "param-second-f32" (f32.const 2) (f32.const 3)) (f32.const 3)
+)
+(assert_return
+  (invoke "param-second-f64" (f64.const 2) (f64.const 3)) (f64.const 3)
+)
+
+(assert_return
+  (invoke "param-mixed"
+    (f32.const 1) (i32.const 2) (i64.const 3)
+    (i32.const 4) (f64.const 5.5) (i32.const 6)
+  )
+  (f64.const 5.5)
+)
+
+(assert_return (invoke "empty"))
+(assert_return (invoke "value-void"))
+(assert_return (invoke "value-i32") (i32.const 77))
+(assert_return (invoke "value-i64") (i64.const 7777))
+(assert_return (invoke "value-f32") (f32.const 77.7))
+(assert_return (invoke "value-f64") (f64.const 77.77))
+(assert_return (invoke "value-block-void"))
+(assert_return (invoke "value-block-i32") (i32.const 77))
+
+(assert_return (invoke "return-empty"))
+(assert_return (invoke "return-i32") (i32.const 78))
+(assert_return (invoke "return-i64") (i64.const 7878))
+(assert_return (invoke "return-f32") (f32.const 78.7))
+(assert_return (invoke "return-f64") (f64.const 78.78))
+(assert_return (invoke "return-block-i32") (i32.const 77))
+
+(assert_return (invoke "break-empty"))
+(assert_return (invoke "break-i32") (i32.const 79))
+(assert_return (invoke "break-i64") (i64.const 7979))
+(assert_return (invoke "break-f32") (f32.const 79.9))
+(assert_return (invoke "break-f64") (f64.const 79.79))
+(assert_return (invoke "break-block-i32") (i32.const 77))
+
+(assert_return (invoke "break-br_if-empty" (i32.const 0)))
+(assert_return (invoke "break-br_if-empty" (i32.const 2)))
+(assert_return (invoke "break-br_if-num" (i32.const 0)) (i32.const 51))
+(assert_return (invoke "break-br_if-num" (i32.const 1)) (i32.const 50))
+
+(assert_return (invoke "break-br_table-empty" (i32.const 0)))
+(assert_return (invoke "break-br_table-empty" (i32.const 1)))
+(assert_return (invoke "break-br_table-empty" (i32.const 5)))
+(assert_return (invoke "break-br_table-empty" (i32.const -1)))
+(assert_return (invoke "break-br_table-num" (i32.const 0)) (i32.const 50))
+(assert_return (invoke "break-br_table-num" (i32.const 1)) (i32.const 50))
+(assert_return (invoke "break-br_table-num" (i32.const 10)) (i32.const 50))
+(assert_return (invoke "break-br_table-num" (i32.const -100)) (i32.const 50))
+(assert_return (invoke "break-br_table-nested-empty" (i32.const 0)))
+(assert_return (invoke "break-br_table-nested-empty" (i32.const 1)))
+(assert_return (invoke "break-br_table-nested-empty" (i32.const 3)))
+(assert_return (invoke "break-br_table-nested-empty" (i32.const -2)))
+(assert_return
+  (invoke "break-br_table-nested-num" (i32.const 0)) (i32.const 52)
+)
+(assert_return
+  (invoke "break-br_table-nested-num" (i32.const 1)) (i32.const 50)
+)
+(assert_return
+  (invoke "break-br_table-nested-num" (i32.const 2)) (i32.const 52)
+)
+(assert_return
+  (invoke "break-br_table-nested-num" (i32.const -3)) (i32.const 52)
+)
+
+(assert_return (invoke "init-local-i32") (i32.const 0))
+(assert_return (invoke "init-local-i64") (i64.const 0))
+(assert_return (invoke "init-local-f32") (f32.const 0))
+(assert_return (invoke "init-local-f64") (f64.const 0))
+
+
+;; Expansion of inline function types
+
+(module
+  (func $f (result f64) (f64.const 0))  ;; adds implicit type definition
+  (func $g (param i32))                 ;; reuses explicit type definition
+  (type $t (func (param i32)))
+
+  (func $i32->void (type 0))                ;; (param i32)
+  (func $void->f64 (type 1) (f64.const 0))  ;; (result f64)
+  (func $check
+    (call $i32->void (i32.const 0))
+    (drop (call $void->f64))
+  )
+)
+
+(assert_invalid
+  (module
+    (func $f (result f64) (f64.const 0))  ;; adds implicit type definition
+    (func $g (param i32))                 ;; reuses explicit type definition
+    (func $h (result f64) (f64.const 1))  ;; reuses implicit type definition
+    (type $t (func (param i32)))
+
+    (func (type 2))  ;; does not exist
+  )
+  "unknown type"
+)
+
+
+(module
+  (type $sig (func))
+
+  (func $empty-sig-1)  ;; should be assigned type $sig
+  (func $complex-sig-1 (param f64 i64 f64 i64 f64 i64 f32 i32))
+  (func $empty-sig-2)  ;; should be assigned type $sig
+  (func $complex-sig-2 (param f64 i64 f64 i64 f64 i64 f32 i32))
+  (func $complex-sig-3 (param f64 i64 f64 i64 f64 i64 f32 i32))
+  (func $complex-sig-4 (param i64 i64 f64 i64 f64 i64 f32 i32))
+  (func $complex-sig-5 (param i64 i64 f64 i64 f64 i64 f32 i32))
+
+  (type $empty-sig-duplicate (func))
+  (type $complex-sig-duplicate (func (param i64 i64 f64 i64 f64 i64 f32 i32)))
+  (table funcref
+    (elem
+      $complex-sig-3 $empty-sig-2 $complex-sig-1 $complex-sig-3 $empty-sig-1
+      $complex-sig-4 $complex-sig-5
+    )
+  )
+
+  (func (export "signature-explicit-reused")
+    (call_indirect (type $sig) (i32.const 1))
+    (call_indirect (type $sig) (i32.const 4))
+  )
+
+  (func (export "signature-implicit-reused")
+    ;; The implicit index 3 in this test depends on the function and
+    ;; type definitions, and may need adapting if they change.
+    (call_indirect (type 3)
+      (f64.const 0) (i64.const 0) (f64.const 0) (i64.const 0)
+      (f64.const 0) (i64.const 0) (f32.const 0) (i32.const 0)
+      (i32.const 0)
+    )
+    (call_indirect (type 3)
+      (f64.const 0) (i64.const 0) (f64.const 0) (i64.const 0)
+      (f64.const 0) (i64.const 0) (f32.const 0) (i32.const 0)
+      (i32.const 2)
+    )
+    (call_indirect (type 3)
+      (f64.const 0) (i64.const 0) (f64.const 0) (i64.const 0)
+      (f64.const 0) (i64.const 0) (f32.const 0) (i32.const 0)
+      (i32.const 3)
+    )
+  )
+
+  (func (export "signature-explicit-duplicate")
+    (call_indirect (type $empty-sig-duplicate) (i32.const 1))
+  )
+
+  (func (export "signature-implicit-duplicate")
+    (call_indirect (type $complex-sig-duplicate)
+      (i64.const 0) (i64.const 0) (f64.const 0) (i64.const 0)
+      (f64.const 0) (i64.const 0) (f32.const 0) (i32.const 0)
+      (i32.const 5)
+    )
+    (call_indirect (type $complex-sig-duplicate)
+      (i64.const 0) (i64.const 0) (f64.const 0) (i64.const 0)
+      (f64.const 0) (i64.const 0) (f32.const 0) (i32.const 0)
+      (i32.const 6)
+    )
+  )
+)
+
+(assert_return (invoke "signature-explicit-reused"))
+(assert_return (invoke "signature-implicit-reused"))
+(assert_return (invoke "signature-explicit-duplicate"))
+(assert_return (invoke "signature-implicit-duplicate"))
+
+
+;; Malformed type use
+
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(func (type $sig) (result i32) (param i32) (i32.const 0))"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(func (param i32) (type $sig) (result i32) (i32.const 0))"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(func (param i32) (result i32) (type $sig) (i32.const 0))"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(func (result i32) (type $sig) (param i32) (i32.const 0))"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(func (result i32) (param i32) (type $sig) (i32.const 0))"
+  )
+  "unexpected token"
+)
+(assert_malformed
+  (module quote
+    "(func (result i32) (param i32) (i32.const 0))"
+  )
+  "unexpected token"
+)
+
+(assert_malformed
+  (module quote
+    "(type $sig (func))"
+    "(func (type $sig) (result i32) (i32.const 0))"
+  )
+  "inline function type"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(func (type $sig) (result i32) (i32.const 0))"
+  )
+  "inline function type"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32) (result i32)))"
+    "(func (type $sig) (param i32) (i32.const 0))"
+  )
+  "inline function type"
+)
+(assert_malformed
+  (module quote
+    "(type $sig (func (param i32 i32) (result i32)))"
+    "(func (type $sig) (param i32) (result i32) (unreachable))"
+  )
+  "inline function type"
+)
+
+
+;; Invalid typing of locals
+
+(assert_invalid
+  (module (func $type-local-num-vs-num (result i64) (local i32) (local.get 0)))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-local-num-vs-num (local f32) (i32.eqz (local.get 0))))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-local-num-vs-num (local f64 i64) (f64.neg (local.get 1))))
+  "type mismatch"
+)
+
+
+;; Invalid typing of parameters
+
+(assert_invalid
+  (module (func $type-param-num-vs-num (param i32) (result i64) (local.get 0)))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-param-num-vs-num (param f32) (i32.eqz (local.get 0))))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-param-num-vs-num (param f64 i64) (f64.neg (local.get 1))))
+  "type mismatch"
+)
+
+
+;; Invalid typing of result
+
+(assert_invalid
+  (module (func $type-multiple-result (result i32 i32) (unreachable)))
+  "invalid result arity"
+)
+(assert_invalid
+  (module
+    (type (func (result i32 i32)))
+    (func $type-multiple-result (type 0) (unreachable))
+  )
+  "invalid result arity"
+)
+
+
+(assert_invalid
+  (module (func $type-empty-i32 (result i32)))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-empty-i64 (result i64)))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-empty-f32 (result f32)))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-empty-f64 (result f64)))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-value-void-vs-num (result i32)
+    (nop)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-value-num-vs-void
+    (i32.const 0)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-value-num-vs-num (result i32)
+    (f32.const 0)
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-return-last-empty-vs-num (result i32)
+    (return)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-return-last-void-vs-num (result i32)
+    (return (nop))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-return-last-num-vs-num (result i32)
+    (return (i64.const 0))
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-return-empty-vs-num (result i32)
+    (return) (i32.const 1)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-return-void-vs-num (result i32)
+    (return (nop)) (i32.const 1)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-return-num-vs-num (result i32)
+    (return (i64.const 1)) (i32.const 1)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-return-first-num-vs-num (result i32)
+    (return (i64.const 1)) (return (i32.const 1))
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-break-last-void-vs-num (result i32)
+    (br 0)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-break-last-num-vs-num (result i32)
+    (br 0 (f32.const 0))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-break-void-vs-num (result i32)
+    (br 0) (i32.const 1)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-break-num-vs-num (result i32)
+    (br 0 (i64.const 1)) (i32.const 1)
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-break-first-num-vs-num (result i32)
+    (br 0 (i64.const 1)) (br 0 (i32.const 1))
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-break-nested-empty-vs-num (result i32)
+    (block (br 1)) (br 0 (i32.const 1))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-break-nested-void-vs-num (result i32)
+    (block (br 1 (nop))) (br 0 (i32.const 1))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-break-nested-num-vs-num (result i32)
+    (block (br 1 (i64.const 1))) (br 0 (i32.const 1))
+  ))
+  "type mismatch"
+)
+
+
+;; Syntax errors
+
+(assert_malformed
+  (module quote "(func (nop) (local i32))")
+  "unexpected token"
+)
+(assert_malformed
+  (module quote "(func (nop) (param i32))")
+  "unexpected token"
+)
+(assert_malformed
+  (module quote "(func (nop) (result i32))")
+  "unexpected token"
+)
+(assert_malformed
+  (module quote "(func (local i32) (param i32))")
+  "unexpected token"
+)
+(assert_malformed
+  (module quote "(func (local i32) (result i32) (local.get 0))")
+  "unexpected token"
+)
+(assert_malformed
+  (module quote "(func (result i32) (param i32) (local.get 0))")
+  "unexpected token"
+)
+
+;; Duplicate name errors
+
+(assert_malformed (module quote
+  "(func $foo)"
+  "(func $foo)")
+  "duplicate func")
+(assert_malformed (module quote
+  "(import \"\" \"\" (func $foo))"
+  "(func $foo)")
+  "duplicate func")
+(assert_malformed (module quote
+  "(import \"\" \"\" (func $foo))"
+  "(import \"\" \"\" (func $foo))")
+  "duplicate func")
+
+(assert_malformed (module quote "(func (param $foo i32) (param $foo i32))")
+  "duplicate local")
+(assert_malformed (module quote "(func (param $foo i32) (local $foo i32))")
+  "duplicate local")
+(assert_malformed (module quote "(func (local $foo i32) (local $foo i32))")
+  "duplicate local")
diff --git a/tests/wast/reference-types/global.wast b/tests/wast/reference-types/global.wast
new file mode 100644
index 00000000..a19ae5e7
--- /dev/null
+++ b/tests/wast/reference-types/global.wast
@@ -0,0 +1,507 @@
+;; Test globals
+
+(module
+  (global $a i32 (i32.const -2))
+  (global (;1;) f32 (f32.const -3))
+  (global (;2;) f64 (f64.const -4))
+  (global $b i64 (i64.const -5))
+
+  (global $x (mut i32) (i32.const -12))
+  (global (;5;) (mut f32) (f32.const -13))
+  (global (;6;) (mut f64) (f64.const -14))
+  (global $y (mut i64) (i64.const -15))
+
+  (global $r externref (ref.null extern))
+  (global funcref (ref.null func))
+
+  (func (export "get-a") (result i32) (global.get $a))
+  (func (export "get-b") (result i64) (global.get $b))
+  (func (export "get-r") (result externref) (global.get $r))
+  (func (export "get-x") (result i32) (global.get $x))
+  (func (export "get-y") (result i64) (global.get $y))
+  (func (export "set-x") (param i32) (global.set $x (local.get 0)))
+  (func (export "set-y") (param i64) (global.set $y (local.get 0)))
+
+  (func (export "get-1") (result f32) (global.get 1))
+  (func (export "get-2") (result f64) (global.get 2))
+  (func (export "get-5") (result f32) (global.get 5))
+  (func (export "get-6") (result f64) (global.get 6))
+  (func (export "set-5") (param f32) (global.set 5 (local.get 0)))
+  (func (export "set-6") (param f64) (global.set 6 (local.get 0)))
+
+  ;; As the argument of control constructs and instructions
+
+  (memory 1)
+
+  (func $dummy)
+
+  (func (export "as-select-first") (result i32)
+    (select (global.get $x) (i32.const 2) (i32.const 3))
+  )
+  (func (export "as-select-mid") (result i32)
+    (select (i32.const 2) (global.get $x) (i32.const 3))
+  )
+  (func (export "as-select-last") (result i32)
+    (select (i32.const 2) (i32.const 3) (global.get $x))
+  )
+
+  (func (export "as-loop-first") (result i32)
+    (loop (result i32)
+      (global.get $x) (call $dummy) (call $dummy)
+    )
+  )
+  (func (export "as-loop-mid") (result i32)
+    (loop (result i32)
+      (call $dummy) (global.get $x) (call $dummy)
+    )
+  )
+  (func (export "as-loop-last") (result i32)
+    (loop (result i32)
+      (call $dummy) (call $dummy) (global.get $x)
+    )
+  )
+
+  (func (export "as-if-condition") (result i32)
+    (if (result i32) (global.get $x)
+      (then (call $dummy) (i32.const 2))
+      (else (call $dummy) (i32.const 3))
+    )
+  )
+  (func (export "as-if-then") (result i32)
+    (if (result i32) (i32.const 1)
+      (then (global.get $x)) (else (i32.const 2))
+    )
+  )
+  (func (export "as-if-else") (result i32)
+    (if (result i32) (i32.const 0)
+      (then (i32.const 2)) (else (global.get $x))
+    )
+  )
+
+  (func (export "as-br_if-first") (result i32)
+    (block (result i32)
+      (br_if 0 (global.get $x) (i32.const 2))
+      (return (i32.const 3))
+    )
+  )
+  (func (export "as-br_if-last") (result i32)
+    (block (result i32)
+      (br_if 0 (i32.const 2) (global.get $x))
+      (return (i32.const 3))
+    )
+  )
+
+  (func (export "as-br_table-first") (result i32)
+    (block (result i32)
+      (global.get $x) (i32.const 2) (br_table 0 0)
+    )
+  )
+  (func (export "as-br_table-last") (result i32)
+    (block (result i32)
+      (i32.const 2) (global.get $x) (br_table 0 0)
+    )
+  )
+
+  (func $func (param i32 i32) (result i32) (local.get 0))
+  (type $check (func (param i32 i32) (result i32)))
+  (table funcref (elem $func))
+  (func (export "as-call_indirect-first") (result i32)
+    (block (result i32)
+      (call_indirect (type $check)
+        (global.get $x) (i32.const 2) (i32.const 0)
+      )
+    )
+  )
+  (func (export "as-call_indirect-mid") (result i32)
+    (block (result i32)
+      (call_indirect (type $check)
+        (i32.const 2) (global.get $x) (i32.const 0)
+      )
+    )
+  )
+ (func (export "as-call_indirect-last") (result i32)
+    (block (result i32)
+      (call_indirect (type $check)
+        (i32.const 2) (i32.const 0) (global.get $x)
+      )
+    )
+  )
+
+  (func (export "as-store-first")
+    (global.get $x) (i32.const 1) (i32.store)
+  )
+  (func (export "as-store-last")
+    (i32.const 0) (global.get $x) (i32.store)
+  )
+  (func (export "as-load-operand") (result i32)
+    (i32.load (global.get $x))
+  )
+  (func (export "as-memory.grow-value") (result i32)
+    (memory.grow (global.get $x))
+  )
+
+  (func $f (param i32) (result i32) (local.get 0))
+  (func (export "as-call-value") (result i32)
+    (call $f (global.get $x))
+  )
+
+  (func (export "as-return-value") (result i32)
+    (global.get $x) (return)
+  )
+  (func (export "as-drop-operand")
+    (drop (global.get $x))
+  )
+  (func (export "as-br-value") (result i32)
+    (block (result i32) (br 0 (global.get $x)))
+  )
+
+  (func (export "as-local.set-value") (param i32) (result i32)
+    (local.set 0 (global.get $x))
+    (local.get 0)
+  )
+  (func (export "as-local.tee-value") (param i32) (result i32)
+    (local.tee 0 (global.get $x))
+  )
+  (func (export "as-global.set-value") (result i32)
+    (global.set $x (global.get $x))
+    (global.get $x)
+  )
+
+  (func (export "as-unary-operand") (result i32)
+    (i32.eqz (global.get $x))
+  )
+  (func (export "as-binary-operand") (result i32)
+    (i32.mul
+      (global.get $x) (global.get $x)
+    )
+  )
+  (func (export "as-compare-operand") (result i32)
+    (i32.gt_u
+      (global.get 0) (i32.const 1)
+    )
+  )
+)
+
+(assert_return (invoke "get-a") (i32.const -2))
+(assert_return (invoke "get-b") (i64.const -5))
+(assert_return (invoke "get-r") (ref.null extern))
+(assert_return (invoke "get-x") (i32.const -12))
+(assert_return (invoke "get-y") (i64.const -15))
+
+(assert_return (invoke "get-1") (f32.const -3))
+(assert_return (invoke "get-2") (f64.const -4))
+(assert_return (invoke "get-5") (f32.const -13))
+(assert_return (invoke "get-6") (f64.const -14))
+
+(assert_return (invoke "set-x" (i32.const 6)))
+(assert_return (invoke "set-y" (i64.const 7)))
+(assert_return (invoke "set-5" (f32.const 8)))
+(assert_return (invoke "set-6" (f64.const 9)))
+
+(assert_return (invoke "get-x") (i32.const 6))
+(assert_return (invoke "get-y") (i64.const 7))
+(assert_return (invoke "get-5") (f32.const 8))
+(assert_return (invoke "get-6") (f64.const 9))
+
+(assert_return (invoke "as-select-first") (i32.const 6))
+(assert_return (invoke "as-select-mid") (i32.const 2))
+(assert_return (invoke "as-select-last") (i32.const 2))
+
+(assert_return (invoke "as-loop-first") (i32.const 6))
+(assert_return (invoke "as-loop-mid") (i32.const 6))
+(assert_return (invoke "as-loop-last") (i32.const 6))
+
+(assert_return (invoke "as-if-condition") (i32.const 2))
+(assert_return (invoke "as-if-then") (i32.const 6))
+(assert_return (invoke "as-if-else") (i32.const 6))
+
+(assert_return (invoke "as-br_if-first") (i32.const 6))
+(assert_return (invoke "as-br_if-last") (i32.const 2))
+
+(assert_return (invoke "as-br_table-first") (i32.const 6))
+(assert_return (invoke "as-br_table-last") (i32.const 2))
+
+(assert_return (invoke "as-call_indirect-first") (i32.const 6))
+(assert_return (invoke "as-call_indirect-mid") (i32.const 2))
+(assert_trap (invoke "as-call_indirect-last") "undefined element")
+
+(assert_return (invoke "as-store-first"))
+(assert_return (invoke "as-store-last"))
+(assert_return (invoke "as-load-operand") (i32.const 1))
+(assert_return (invoke "as-memory.grow-value") (i32.const 1))
+
+(assert_return (invoke "as-call-value") (i32.const 6))
+
+(assert_return (invoke "as-return-value") (i32.const 6))
+(assert_return (invoke "as-drop-operand"))
+(assert_return (invoke "as-br-value") (i32.const 6))
+
+(assert_return (invoke "as-local.set-value" (i32.const 1)) (i32.const 6))
+(assert_return (invoke "as-local.tee-value" (i32.const 1)) (i32.const 6))
+(assert_return (invoke "as-global.set-value") (i32.const 6))
+
+(assert_return (invoke "as-unary-operand") (i32.const 0))
+(assert_return (invoke "as-binary-operand") (i32.const 36))
+(assert_return (invoke "as-compare-operand") (i32.const 1))
+
+(assert_invalid
+  (module (global f32 (f32.const 0)) (func (global.set 0 (f32.const 1))))
+  "global is immutable"
+)
+
+;; mutable globals can be exported
+(module (global (mut f32) (f32.const 0)) (export "a" (global 0)))
+(module (global (export "a") (mut f32) (f32.const 0)))
+
+(assert_invalid
+  (module (global f32 (f32.neg (f32.const 0))))
+  "constant expression required"
+)
+
+(assert_invalid
+  (module (global f32 (local.get 0)))
+  "constant expression required"
+)
+
+(assert_invalid
+  (module (global f32 (f32.neg (f32.const 1))))
+  "constant expression required"
+)
+
+(assert_invalid
+  (module (global i32 (i32.const 0) (nop)))
+  "constant expression required"
+)
+
+(assert_invalid
+  (module (global i32 (nop)))
+  "constant expression required"
+)
+
+(assert_invalid
+  (module (global i32 (f32.const 0)))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (global i32 (i32.const 0) (i32.const 0)))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (global i32 (;empty instruction sequence;)))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (global (import "" "") externref) (global funcref (global.get 0)))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (global i32 (global.get 0)))
+  "unknown global"
+)
+
+(assert_invalid
+  (module (global i32 (global.get 1)) (global i32 (i32.const 0)))
+  "unknown global"
+)
+
+(module
+  (import "spectest" "global_i32" (global i32))
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\98\80\80\80\00"             ;; import section
+      "\01"                          ;; length 1
+      "\08\73\70\65\63\74\65\73\74"  ;; "spectest"
+      "\0a\67\6c\6f\62\61\6c\5f\69\33\32" ;; "global_i32"
+      "\03"                          ;; GlobalImport
+      "\7f"                          ;; i32
+      "\02"                          ;; malformed mutability
+  )
+  "malformed mutability"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\98\80\80\80\00"             ;; import section
+      "\01"                          ;; length 1
+      "\08\73\70\65\63\74\65\73\74"  ;; "spectest"
+      "\0a\67\6c\6f\62\61\6c\5f\69\33\32" ;; "global_i32"
+      "\03"                          ;; GlobalImport
+      "\7f"                          ;; i32
+      "\ff"                          ;; malformed mutability
+  )
+  "malformed mutability"
+)
+
+(module
+  (global i32 (i32.const 0))
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\86\80\80\80\00"  ;; global section
+      "\01"               ;; length 1
+      "\7f"               ;; i32
+      "\02"               ;; malformed mutability
+      "\41\00"            ;; i32.const 0
+      "\0b"               ;; end
+  )
+  "malformed mutability"
+)
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\06\86\80\80\80\00"  ;; global section
+      "\01"               ;; length 1
+      "\7f"               ;; i32
+      "\ff"               ;; malformed mutability
+      "\41\00"            ;; i32.const 0
+      "\0b"               ;; end
+  )
+  "malformed mutability"
+)
+
+
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty
+      (global.set $x)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-block
+      (i32.const 0)
+      (block (global.set $x))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-loop
+      (i32.const 0)
+      (loop (global.set $x))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-then
+      (i32.const 0) (i32.const 0)
+      (if (then (global.set $x)))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-else
+      (i32.const 0) (i32.const 0)
+      (if (result i32) (then (i32.const 0)) (else (global.set $x)))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-br
+      (i32.const 0)
+      (block (br 0 (global.set $x)))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-br_if
+      (i32.const 0)
+      (block (br_if 0 (global.set $x)))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-br_table
+      (i32.const 0)
+      (block (br_table 0 (global.set $x)))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-return
+      (return (global.set $x))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-select
+      (select (global.set $x) (i32.const 1) (i32.const 2))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $type-global.set-value-empty-in-call
+      (call 1 (global.set $x))
+    )
+    (func (param i32) (result i32) (local.get 0))
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (global $x (mut i32) (i32.const 0))
+    (func $f (param i32) (result i32) (local.get 0))
+    (type $sig (func (param i32) (result i32)))
+    (table funcref (elem $f))
+    (func $type-global.set-value-empty-in-call_indirect
+      (block (result i32)
+        (call_indirect (type $sig)
+          (global.set $x) (i32.const 0)
+        )
+      )
+    )
+  )
+  "type mismatch"
+)
+
+;; Duplicate identifier errors
+
+(assert_malformed (module quote
+  "(global $foo i32 (i32.const 0))"
+  "(global $foo i32 (i32.const 0))")
+  "duplicate global")
+(assert_malformed (module quote
+  "(import \"\" \"\" (global $foo i32))"
+  "(global $foo i32 (i32.const 0))")
+  "duplicate global")
+(assert_malformed (module quote
+  "(import \"\" \"\" (global $foo i32))"
+  "(import \"\" \"\" (global $foo i32))")
+  "duplicate global")
diff --git a/tests/wast/reference-types/linking.wast b/tests/wast/reference-types/linking.wast
new file mode 100644
index 00000000..ed551cb3
--- /dev/null
+++ b/tests/wast/reference-types/linking.wast
@@ -0,0 +1,450 @@
+;; Functions
+
+(module $Mf
+  (func (export "call") (result i32) (call $g))
+  (func $g (result i32) (i32.const 2))
+)
+(register "Mf" $Mf)
+
+(module $Nf
+  (func $f (import "Mf" "call") (result i32))
+  (export "Mf.call" (func $f))
+  (func (export "call Mf.call") (result i32) (call $f))
+  (func (export "call") (result i32) (call $g))
+  (func $g (result i32) (i32.const 3))
+)
+
+(assert_return (invoke $Mf "call") (i32.const 2))
+(assert_return (invoke $Nf "Mf.call") (i32.const 2))
+(assert_return (invoke $Nf "call") (i32.const 3))
+(assert_return (invoke $Nf "call Mf.call") (i32.const 2))
+
+(module
+  (import "spectest" "print_i32" (func $f (param i32)))
+  (export "print" (func $f))
+)
+(register "reexport_f")
+(assert_unlinkable
+  (module (import "reexport_f" "print" (func (param i64))))
+  "incompatible import type"
+)
+(assert_unlinkable
+  (module (import "reexport_f" "print" (func (param i32) (result i32))))
+  "incompatible import type"
+)
+
+
+;; Globals
+
+(module $Mg
+  (global $glob (export "glob") i32 (i32.const 42))
+  (func (export "get") (result i32) (global.get $glob))
+
+  ;; export mutable globals
+  (global $mut_glob (export "mut_glob") (mut i32) (i32.const 142))
+  (func (export "get_mut") (result i32) (global.get $mut_glob))
+  (func (export "set_mut") (param i32) (global.set $mut_glob (local.get 0)))
+)
+(register "Mg" $Mg)
+
+(module $Ng
+  (global $x (import "Mg" "glob") i32)
+  (global $mut_glob (import "Mg" "mut_glob") (mut i32))
+  (func $f (import "Mg" "get") (result i32))
+  (func $get_mut (import "Mg" "get_mut") (result i32))
+  (func $set_mut (import "Mg" "set_mut") (param i32))
+
+  (export "Mg.glob" (global $x))
+  (export "Mg.get" (func $f))
+  (global $glob (export "glob") i32 (i32.const 43))
+  (func (export "get") (result i32) (global.get $glob))
+
+  (export "Mg.mut_glob" (global $mut_glob))
+  (export "Mg.get_mut" (func $get_mut))
+  (export "Mg.set_mut" (func $set_mut))
+)
+
+(assert_return (get $Mg "glob") (i32.const 42))
+(assert_return (get $Ng "Mg.glob") (i32.const 42))
+(assert_return (get $Ng "glob") (i32.const 43))
+(assert_return (invoke $Mg "get") (i32.const 42))
+(assert_return (invoke $Ng "Mg.get") (i32.const 42))
+(assert_return (invoke $Ng "get") (i32.const 43))
+
+(assert_return (get $Mg "mut_glob") (i32.const 142))
+(assert_return (get $Ng "Mg.mut_glob") (i32.const 142))
+(assert_return (invoke $Mg "get_mut") (i32.const 142))
+(assert_return (invoke $Ng "Mg.get_mut") (i32.const 142))
+
+(assert_return (invoke $Mg "set_mut" (i32.const 241)))
+(assert_return (get $Mg "mut_glob") (i32.const 241))
+(assert_return (get $Ng "Mg.mut_glob") (i32.const 241))
+(assert_return (invoke $Mg "get_mut") (i32.const 241))
+(assert_return (invoke $Ng "Mg.get_mut") (i32.const 241))
+
+
+(assert_unlinkable
+  (module (import "Mg" "mut_glob" (global i32)))
+  "incompatible import type"
+)
+(assert_unlinkable
+  (module (import "Mg" "glob" (global (mut i32))))
+  "incompatible import type"
+)
+
+
+(module $Mref_ex
+  (global (export "g-const-func") funcref (ref.null func))
+  (global (export "g-var-func") (mut funcref) (ref.null func))
+  (global (export "g-const-extern") externref (ref.null extern))
+  (global (export "g-var-extern") (mut externref) (ref.null extern))
+)
+(register "Mref_ex" $Mref_ex)
+
+(module $Mref_im
+  (global (import "Mref_ex" "g-const-func") funcref)
+  (global (import "Mref_ex" "g-const-extern") externref)
+
+  (global (import "Mref_ex" "g-var-func") (mut funcref))
+  (global (import "Mref_ex" "g-var-extern") (mut externref))
+)
+
+(assert_unlinkable
+  (module (global (import "Mref_ex" "g-const-extern") funcref))
+  "incompatible import type"
+)
+(assert_unlinkable
+  (module (global (import "Mref_ex" "g-const-func") externref))
+  "incompatible import type"
+)
+
+
+(assert_unlinkable
+  (module (global (import "Mref_ex" "g-var-func") (mut externref)))
+  "incompatible import type"
+)
+(assert_unlinkable
+  (module (global (import "Mref_ex" "g-var-extern") (mut funcref)))
+  "incompatible import type"
+)
+
+
+;; Tables
+
+(module $Mt
+  (type (func (result i32)))
+  (type (func))
+
+  (table (export "tab") 10 funcref)
+  (elem (i32.const 2) $g $g $g $g)
+  (func $g (result i32) (i32.const 4))
+  (func (export "h") (result i32) (i32.const -4))
+
+  (func (export "call") (param i32) (result i32)
+    (call_indirect (type 0) (local.get 0))
+  )
+)
+(register "Mt" $Mt)
+
+(module $Nt
+  (type (func))
+  (type (func (result i32)))
+
+  (func $f (import "Mt" "call") (param i32) (result i32))
+  (func $h (import "Mt" "h") (result i32))
+
+  (table funcref (elem $g $g $g $h $f))
+  (func $g (result i32) (i32.const 5))
+
+  (export "Mt.call" (func $f))
+  (func (export "call Mt.call") (param i32) (result i32)
+    (call $f (local.get 0))
+  )
+  (func (export "call") (param i32) (result i32)
+    (call_indirect (type 1) (local.get 0))
+  )
+)
+
+(assert_return (invoke $Mt "call" (i32.const 2)) (i32.const 4))
+(assert_return (invoke $Nt "Mt.call" (i32.const 2)) (i32.const 4))
+(assert_return (invoke $Nt "call" (i32.const 2)) (i32.const 5))
+(assert_return (invoke $Nt "call Mt.call" (i32.const 2)) (i32.const 4))
+
+(assert_trap (invoke $Mt "call" (i32.const 1)) "uninitialized")
+(assert_trap (invoke $Nt "Mt.call" (i32.const 1)) "uninitialized")
+(assert_return (invoke $Nt "call" (i32.const 1)) (i32.const 5))
+(assert_trap (invoke $Nt "call Mt.call" (i32.const 1)) "uninitialized")
+
+(assert_trap (invoke $Mt "call" (i32.const 0)) "uninitialized")
+(assert_trap (invoke $Nt "Mt.call" (i32.const 0)) "uninitialized")
+(assert_return (invoke $Nt "call" (i32.const 0)) (i32.const 5))
+(assert_trap (invoke $Nt "call Mt.call" (i32.const 0)) "uninitialized")
+
+(assert_trap (invoke $Mt "call" (i32.const 20)) "undefined")
+(assert_trap (invoke $Nt "Mt.call" (i32.const 20)) "undefined")
+(assert_trap (invoke $Nt "call" (i32.const 7)) "undefined")
+(assert_trap (invoke $Nt "call Mt.call" (i32.const 20)) "undefined")
+
+(assert_return (invoke $Nt "call" (i32.const 3)) (i32.const -4))
+(assert_trap (invoke $Nt "call" (i32.const 4)) "indirect call")
+
+(module $Ot
+  (type (func (result i32)))
+
+  (func $h (import "Mt" "h") (result i32))
+  (table (import "Mt" "tab") 5 funcref)
+  (elem (i32.const 1) $i $h)
+  (func $i (result i32) (i32.const 6))
+
+  (func (export "call") (param i32) (result i32)
+    (call_indirect (type 0) (local.get 0))
+  )
+)
+
+(assert_return (invoke $Mt "call" (i32.const 3)) (i32.const 4))
+(assert_return (invoke $Nt "Mt.call" (i32.const 3)) (i32.const 4))
+(assert_return (invoke $Nt "call Mt.call" (i32.const 3)) (i32.const 4))
+(assert_return (invoke $Ot "call" (i32.const 3)) (i32.const 4))
+
+(assert_return (invoke $Mt "call" (i32.const 2)) (i32.const -4))
+(assert_return (invoke $Nt "Mt.call" (i32.const 2)) (i32.const -4))
+(assert_return (invoke $Nt "call" (i32.const 2)) (i32.const 5))
+(assert_return (invoke $Nt "call Mt.call" (i32.const 2)) (i32.const -4))
+(assert_return (invoke $Ot "call" (i32.const 2)) (i32.const -4))
+
+(assert_return (invoke $Mt "call" (i32.const 1)) (i32.const 6))
+(assert_return (invoke $Nt "Mt.call" (i32.const 1)) (i32.const 6))
+(assert_return (invoke $Nt "call" (i32.const 1)) (i32.const 5))
+(assert_return (invoke $Nt "call Mt.call" (i32.const 1)) (i32.const 6))
+(assert_return (invoke $Ot "call" (i32.const 1)) (i32.const 6))
+
+(assert_trap (invoke $Mt "call" (i32.const 0)) "uninitialized")
+(assert_trap (invoke $Nt "Mt.call" (i32.const 0)) "uninitialized")
+(assert_return (invoke $Nt "call" (i32.const 0)) (i32.const 5))
+(assert_trap (invoke $Nt "call Mt.call" (i32.const 0)) "uninitialized")
+(assert_trap (invoke $Ot "call" (i32.const 0)) "uninitialized")
+
+(assert_trap (invoke $Ot "call" (i32.const 20)) "undefined")
+
+(module
+  (table (import "Mt" "tab") 0 funcref)
+  (elem (i32.const 9) $f)
+  (func $f)
+)
+
+(module $G1 (global (export "g") i32 (i32.const 5)))
+(register "G1" $G1)
+(module $G2
+  (global (import "G1" "g") i32)
+  (global (export "g") i32 (global.get 0))
+)
+(assert_return (get $G2 "g") (i32.const 5))
+
+(assert_trap
+  (module
+    (table (import "Mt" "tab") 0 funcref)
+    (elem (i32.const 10) $f)
+    (func $f)
+  )
+  "out of bounds"
+)
+
+(assert_unlinkable
+  (module
+    (table (import "Mt" "tab") 10 funcref)
+    (memory (import "Mt" "mem") 1)  ;; does not exist
+    (func $f (result i32) (i32.const 0))
+    (elem (i32.const 7) $f)
+    (elem (i32.const 9) $f)
+  )
+  "unknown import"
+)
+(assert_trap (invoke $Mt "call" (i32.const 7)) "uninitialized")
+
+;; Unlike in the v1 spec, active element segments stored before an
+;; out-of-bounds access persist after the instantiation failure.
+(assert_trap
+  (module
+    (table (import "Mt" "tab") 10 funcref)
+    (func $f (result i32) (i32.const 0))
+    (elem (i32.const 7) $f)
+    (elem (i32.const 12) $f)  ;; out of bounds
+  )
+  "out of bounds"
+)
+(assert_return (invoke $Mt "call" (i32.const 7)) (i32.const 0))
+
+(assert_trap
+  (module
+    (table (import "Mt" "tab") 10 funcref)
+    (func $f (result i32) (i32.const 0))
+    (elem (i32.const 7) $f)
+    (memory 1)
+    (data (i32.const 0x10000) "d")  ;; out of bounds
+  )
+  "out of bounds"
+)
+(assert_return (invoke $Mt "call" (i32.const 7)) (i32.const 0))
+
+
+(module $Mtable_ex
+  (table $t1 (export "t-func") 1 funcref)
+  (table $t2 (export "t-extern") 1 externref)
+)
+(register "Mtable_ex" $Mtable_ex)
+
+(module
+  (table (import "Mtable_ex" "t-func") 1 funcref)
+  (table (import "Mtable_ex" "t-extern") 1 externref)
+)
+
+(assert_unlinkable
+  (module (table (import "Mtable_ex" "t-func") 1 externref))
+  "incompatible import type"
+)
+(assert_unlinkable
+  (module (table (import "Mtable_ex" "t-extern") 1 funcref))
+  "incompatible import type"
+)
+
+
+;; Memories
+
+(module $Mm
+  (memory (export "mem") 1 5)
+  (data (i32.const 10) "\00\01\02\03\04\05\06\07\08\09")
+
+  (func (export "load") (param $a i32) (result i32)
+    (i32.load8_u (local.get 0))
+  )
+)
+(register "Mm" $Mm)
+
+(module $Nm
+  (func $loadM (import "Mm" "load") (param i32) (result i32))
+
+  (memory 1)
+  (data (i32.const 10) "\f0\f1\f2\f3\f4\f5")
+
+  (export "Mm.load" (func $loadM))
+  (func (export "load") (param $a i32) (result i32)
+    (i32.load8_u (local.get 0))
+  )
+)
+
+(assert_return (invoke $Mm "load" (i32.const 12)) (i32.const 2))
+(assert_return (invoke $Nm "Mm.load" (i32.const 12)) (i32.const 2))
+(assert_return (invoke $Nm "load" (i32.const 12)) (i32.const 0xf2))
+
+(module $Om
+  (memory (import "Mm" "mem") 1)
+  (data (i32.const 5) "\a0\a1\a2\a3\a4\a5\a6\a7")
+
+  (func (export "load") (param $a i32) (result i32)
+    (i32.load8_u (local.get 0))
+  )
+)
+
+(assert_return (invoke $Mm "load" (i32.const 12)) (i32.const 0xa7))
+(assert_return (invoke $Nm "Mm.load" (i32.const 12)) (i32.const 0xa7))
+(assert_return (invoke $Nm "load" (i32.const 12)) (i32.const 0xf2))
+(assert_return (invoke $Om "load" (i32.const 12)) (i32.const 0xa7))
+
+(module
+  (memory (import "Mm" "mem") 0)
+  (data (i32.const 0xffff) "a")
+)
+
+(assert_trap
+  (module
+    (memory (import "Mm" "mem") 0)
+    (data (i32.const 0x10000) "a")
+  )
+  "out of bounds"
+)
+
+(module $Pm
+  (memory (import "Mm" "mem") 1 8)
+
+  (func (export "grow") (param $a i32) (result i32)
+    (memory.grow (local.get 0))
+  )
+)
+
+(assert_return (invoke $Pm "grow" (i32.const 0)) (i32.const 1))
+(assert_return (invoke $Pm "grow" (i32.const 2)) (i32.const 1))
+(assert_return (invoke $Pm "grow" (i32.const 0)) (i32.const 3))
+(assert_return (invoke $Pm "grow" (i32.const 1)) (i32.const 3))
+(assert_return (invoke $Pm "grow" (i32.const 1)) (i32.const 4))
+(assert_return (invoke $Pm "grow" (i32.const 0)) (i32.const 5))
+(assert_return (invoke $Pm "grow" (i32.const 1)) (i32.const -1))
+(assert_return (invoke $Pm "grow" (i32.const 0)) (i32.const 5))
+
+(assert_unlinkable
+  (module
+    (func $host (import "spectest" "print"))
+    (memory (import "Mm" "mem") 1)
+    (table (import "Mm" "tab") 0 funcref)  ;; does not exist
+    (data (i32.const 0) "abc")
+  )
+  "unknown import"
+)
+(assert_return (invoke $Mm "load" (i32.const 0)) (i32.const 0))
+
+;; Unlike in v1 spec, active data segments written before an
+;; out-of-bounds access persist after the instantiation failure.
+(assert_trap
+  (module
+    (memory (import "Mm" "mem") 1)
+    (data (i32.const 0) "abc")
+    (data (i32.const 0x50000) "d") ;; out of bounds
+  )
+  "out of bounds"
+)
+(assert_return (invoke $Mm "load" (i32.const 0)) (i32.const 97))
+
+(assert_trap
+  (module
+    (memory (import "Mm" "mem") 1)
+    (data (i32.const 0) "abc")
+    (table 0 funcref)
+    (func)
+    (elem (i32.const 0) 0)  ;; out of bounds
+  )
+  "out of bounds"
+)
+(assert_return (invoke $Mm "load" (i32.const 0)) (i32.const 97))
+
+;; Store is modified if the start function traps.
+(module $Ms
+  (type $t (func (result i32)))
+  (memory (export "memory") 1)
+  (table (export "table") 1 funcref)
+  (func (export "get memory[0]") (type $t)
+    (i32.load8_u (i32.const 0))
+  )
+  (func (export "get table[0]") (type $t)
+    (call_indirect (type $t) (i32.const 0))
+  )
+)
+(register "Ms" $Ms)
+
+(assert_trap
+  (module
+    (import "Ms" "memory" (memory 1))
+    (import "Ms" "table" (table 1 funcref))
+    (data (i32.const 0) "hello")
+    (elem (i32.const 0) $f)
+    (func $f (result i32)
+      (i32.const 0xdead)
+    )
+    (func $main
+      (unreachable)
+    )
+    (start $main)
+  )
+  "unreachable"
+)
+
+(assert_return (invoke $Ms "get memory[0]") (i32.const 104))  ;; 'h'
+(assert_return (invoke $Ms "get table[0]") (i32.const 0xdead))
diff --git a/tests/wast/reference-types/memory.wast b/tests/wast/reference-types/memory.wast
new file mode 100644
index 00000000..497b69fc
--- /dev/null
+++ b/tests/wast/reference-types/memory.wast
@@ -0,0 +1,242 @@
+;; Test memory section structure
+
+(module (memory 0))
+(module (memory 1))
+(module (memory 0 0))
+(module (memory 0 1))
+(module (memory 1 256))
+(module (memory 0 65536))
+
+(assert_invalid (module (memory 0) (memory 0)) "multiple memories")
+(assert_invalid (module (memory (import "spectest" "memory") 0) (memory 0)) "multiple memories")
+
+(module (memory (data)) (func (export "memsize") (result i32) (memory.size)))
+(assert_return (invoke "memsize") (i32.const 0))
+(module (memory (data "")) (func (export "memsize") (result i32) (memory.size)))
+(assert_return (invoke "memsize") (i32.const 0))
+(module (memory (data "x")) (func (export "memsize") (result i32) (memory.size)))
+(assert_return (invoke "memsize") (i32.const 1))
+
+(assert_invalid (module (data (i32.const 0))) "unknown memory")
+(assert_invalid (module (data (i32.const 0) "")) "unknown memory")
+(assert_invalid (module (data (i32.const 0) "x")) "unknown memory")
+
+(assert_invalid
+  (module (func (drop (f32.load (i32.const 0)))))
+  "unknown memory"
+)
+(assert_invalid
+  (module (func (f32.store (i32.const 0) (f32.const 0))))
+  "unknown memory"
+)
+(assert_invalid
+  (module (func (drop (i32.load8_s (i32.const 0)))))
+  "unknown memory"
+)
+(assert_invalid
+  (module (func (i32.store8 (i32.const 0) (i32.const 0))))
+  "unknown memory"
+)
+(assert_invalid
+  (module (func (drop (memory.size))))
+  "unknown memory"
+)
+(assert_invalid
+  (module (func (drop (memory.grow (i32.const 0)))))
+  "unknown memory"
+)
+
+
+(assert_invalid
+  (module (memory 1 0))
+  "size minimum must not be greater than maximum"
+)
+(assert_invalid
+  (module (memory 65537))
+  "memory size must be at most 65536 pages (4GiB)"
+)
+(assert_invalid
+  (module (memory 2147483648))
+  "memory size must be at most 65536 pages (4GiB)"
+)
+(assert_invalid
+  (module (memory 4294967295))
+  "memory size must be at most 65536 pages (4GiB)"
+)
+(assert_invalid
+  (module (memory 0 65537))
+  "memory size must be at most 65536 pages (4GiB)"
+)
+(assert_invalid
+  (module (memory 0 2147483648))
+  "memory size must be at most 65536 pages (4GiB)"
+)
+(assert_invalid
+  (module (memory 0 4294967295))
+  "memory size must be at most 65536 pages (4GiB)"
+)
+
+(assert_malformed
+  (module quote "(memory 0x1_0000_0000)")
+  "i32 constant out of range"
+)
+(assert_malformed
+  (module quote "(memory 0x1_0000_0000 0x1_0000_0000)")
+  "i32 constant out of range"
+)
+(assert_malformed
+  (module quote "(memory 0 0x1_0000_0000)")
+  "i32 constant out of range"
+)
+
+(module
+  (memory 1)
+  (data (i32.const 0) "ABC\a7D") (data (i32.const 20) "WASM")
+
+  ;; Data section
+  (func (export "data") (result i32)
+    (i32.and
+      (i32.and
+        (i32.and
+          (i32.eq (i32.load8_u (i32.const 0)) (i32.const 65))
+          (i32.eq (i32.load8_u (i32.const 3)) (i32.const 167))
+        )
+        (i32.and
+          (i32.eq (i32.load8_u (i32.const 6)) (i32.const 0))
+          (i32.eq (i32.load8_u (i32.const 19)) (i32.const 0))
+        )
+      )
+      (i32.and
+        (i32.and
+          (i32.eq (i32.load8_u (i32.const 20)) (i32.const 87))
+          (i32.eq (i32.load8_u (i32.const 23)) (i32.const 77))
+        )
+        (i32.and
+          (i32.eq (i32.load8_u (i32.const 24)) (i32.const 0))
+          (i32.eq (i32.load8_u (i32.const 1023)) (i32.const 0))
+        )
+      )
+    )
+  )
+
+  ;; Memory cast
+  (func (export "cast") (result f64)
+    (i64.store (i32.const 8) (i64.const -12345))
+    (if
+      (f64.eq
+        (f64.load (i32.const 8))
+        (f64.reinterpret_i64 (i64.const -12345))
+      )
+      (then (return (f64.const 0)))
+    )
+    (i64.store align=1 (i32.const 9) (i64.const 0))
+    (i32.store16 align=1 (i32.const 15) (i32.const 16453))
+    (f64.load align=1 (i32.const 9))
+  )
+
+  ;; Sign and zero extending memory loads
+  (func (export "i32_load8_s") (param $i i32) (result i32)
+	(i32.store8 (i32.const 8) (local.get $i))
+	(i32.load8_s (i32.const 8))
+  )
+  (func (export "i32_load8_u") (param $i i32) (result i32)
+	(i32.store8 (i32.const 8) (local.get $i))
+	(i32.load8_u (i32.const 8))
+  )
+  (func (export "i32_load16_s") (param $i i32) (result i32)
+	(i32.store16 (i32.const 8) (local.get $i))
+	(i32.load16_s (i32.const 8))
+  )
+  (func (export "i32_load16_u") (param $i i32) (result i32)
+	(i32.store16 (i32.const 8) (local.get $i))
+	(i32.load16_u (i32.const 8))
+  )
+  (func (export "i64_load8_s") (param $i i64) (result i64)
+	(i64.store8 (i32.const 8) (local.get $i))
+	(i64.load8_s (i32.const 8))
+  )
+  (func (export "i64_load8_u") (param $i i64) (result i64)
+	(i64.store8 (i32.const 8) (local.get $i))
+	(i64.load8_u (i32.const 8))
+  )
+  (func (export "i64_load16_s") (param $i i64) (result i64)
+	(i64.store16 (i32.const 8) (local.get $i))
+	(i64.load16_s (i32.const 8))
+  )
+  (func (export "i64_load16_u") (param $i i64) (result i64)
+	(i64.store16 (i32.const 8) (local.get $i))
+	(i64.load16_u (i32.const 8))
+  )
+  (func (export "i64_load32_s") (param $i i64) (result i64)
+	(i64.store32 (i32.const 8) (local.get $i))
+	(i64.load32_s (i32.const 8))
+  )
+  (func (export "i64_load32_u") (param $i i64) (result i64)
+	(i64.store32 (i32.const 8) (local.get $i))
+	(i64.load32_u (i32.const 8))
+  )
+)
+
+(assert_return (invoke "data") (i32.const 1))
+(assert_return (invoke "cast") (f64.const 42.0))
+
+(assert_return (invoke "i32_load8_s" (i32.const -1)) (i32.const -1))
+(assert_return (invoke "i32_load8_u" (i32.const -1)) (i32.const 255))
+(assert_return (invoke "i32_load16_s" (i32.const -1)) (i32.const -1))
+(assert_return (invoke "i32_load16_u" (i32.const -1)) (i32.const 65535))
+
+(assert_return (invoke "i32_load8_s" (i32.const 100)) (i32.const 100))
+(assert_return (invoke "i32_load8_u" (i32.const 200)) (i32.const 200))
+(assert_return (invoke "i32_load16_s" (i32.const 20000)) (i32.const 20000))
+(assert_return (invoke "i32_load16_u" (i32.const 40000)) (i32.const 40000))
+
+(assert_return (invoke "i32_load8_s" (i32.const 0xfedc6543)) (i32.const 0x43))
+(assert_return (invoke "i32_load8_s" (i32.const 0x3456cdef)) (i32.const 0xffffffef))
+(assert_return (invoke "i32_load8_u" (i32.const 0xfedc6543)) (i32.const 0x43))
+(assert_return (invoke "i32_load8_u" (i32.const 0x3456cdef)) (i32.const 0xef))
+(assert_return (invoke "i32_load16_s" (i32.const 0xfedc6543)) (i32.const 0x6543))
+(assert_return (invoke "i32_load16_s" (i32.const 0x3456cdef)) (i32.const 0xffffcdef))
+(assert_return (invoke "i32_load16_u" (i32.const 0xfedc6543)) (i32.const 0x6543))
+(assert_return (invoke "i32_load16_u" (i32.const 0x3456cdef)) (i32.const 0xcdef))
+
+(assert_return (invoke "i64_load8_s" (i64.const -1)) (i64.const -1))
+(assert_return (invoke "i64_load8_u" (i64.const -1)) (i64.const 255))
+(assert_return (invoke "i64_load16_s" (i64.const -1)) (i64.const -1))
+(assert_return (invoke "i64_load16_u" (i64.const -1)) (i64.const 65535))
+(assert_return (invoke "i64_load32_s" (i64.const -1)) (i64.const -1))
+(assert_return (invoke "i64_load32_u" (i64.const -1)) (i64.const 4294967295))
+
+(assert_return (invoke "i64_load8_s" (i64.const 100)) (i64.const 100))
+(assert_return (invoke "i64_load8_u" (i64.const 200)) (i64.const 200))
+(assert_return (invoke "i64_load16_s" (i64.const 20000)) (i64.const 20000))
+(assert_return (invoke "i64_load16_u" (i64.const 40000)) (i64.const 40000))
+(assert_return (invoke "i64_load32_s" (i64.const 20000)) (i64.const 20000))
+(assert_return (invoke "i64_load32_u" (i64.const 40000)) (i64.const 40000))
+
+(assert_return (invoke "i64_load8_s" (i64.const 0xfedcba9856346543)) (i64.const 0x43))
+(assert_return (invoke "i64_load8_s" (i64.const 0x3456436598bacdef)) (i64.const 0xffffffffffffffef))
+(assert_return (invoke "i64_load8_u" (i64.const 0xfedcba9856346543)) (i64.const 0x43))
+(assert_return (invoke "i64_load8_u" (i64.const 0x3456436598bacdef)) (i64.const 0xef))
+(assert_return (invoke "i64_load16_s" (i64.const 0xfedcba9856346543)) (i64.const 0x6543))
+(assert_return (invoke "i64_load16_s" (i64.const 0x3456436598bacdef)) (i64.const 0xffffffffffffcdef))
+(assert_return (invoke "i64_load16_u" (i64.const 0xfedcba9856346543)) (i64.const 0x6543))
+(assert_return (invoke "i64_load16_u" (i64.const 0x3456436598bacdef)) (i64.const 0xcdef))
+(assert_return (invoke "i64_load32_s" (i64.const 0xfedcba9856346543)) (i64.const 0x56346543))
+(assert_return (invoke "i64_load32_s" (i64.const 0x3456436598bacdef)) (i64.const 0xffffffff98bacdef))
+(assert_return (invoke "i64_load32_u" (i64.const 0xfedcba9856346543)) (i64.const 0x56346543))
+(assert_return (invoke "i64_load32_u" (i64.const 0x3456436598bacdef)) (i64.const 0x98bacdef))
+
+;; Duplicate identifier errors
+
+(assert_malformed (module quote
+  "(memory $foo 1)"
+  "(memory $foo 1)")
+  "duplicate memory")
+(assert_malformed (module quote
+  "(import \"\" \"\" (memory $foo 1))"
+  "(memory $foo 1)")
+  "duplicate memory")
+(assert_malformed (module quote
+  "(import \"\" \"\" (memory $foo 1))"
+  "(import \"\" \"\" (memory $foo 1))")
+  "duplicate memory")
diff --git a/tests/wast/reference-types/memory_copy.wast b/tests/wast/reference-types/memory_copy.wast
new file mode 100644
index 00000000..58973d94
--- /dev/null
+++ b/tests/wast/reference-types/memory_copy.wast
@@ -0,0 +1,5578 @@
+;;
+;; Generated by ../meta/generate_memory_copy.js
+;; DO NOT EDIT THIS FILE.  CHANGE THE SOURCE AND REGENERATE.
+;;
+
+(module
+  (memory (export "memory0") 1 1)
+  (data (i32.const 2) "\03\01\04\01")
+  (data (i32.const 12) "\07\05\02\03\06")
+  (func (export "test")
+    (nop))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(invoke "test")
+
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 6)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 7)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 8)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 16)) (i32.const 6))
+(assert_return (invoke "load8_u" (i32.const 17)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 18)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 19)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 20)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 21)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 22)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 23)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 25)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 26)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 27)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 28)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 29)) (i32.const 0))
+
+(module
+  (memory (export "memory0") 1 1)
+  (data (i32.const 2) "\03\01\04\01")
+  (data (i32.const 12) "\07\05\02\03\06")
+  (func (export "test")
+    (memory.copy (i32.const 13) (i32.const 2) (i32.const 3)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(invoke "test")
+
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 6)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 7)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 8)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 15)) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 16)) (i32.const 6))
+(assert_return (invoke "load8_u" (i32.const 17)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 18)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 19)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 20)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 21)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 22)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 23)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 25)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 26)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 27)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 28)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 29)) (i32.const 0))
+
+(module
+  (memory (export "memory0") 1 1)
+  (data (i32.const 2) "\03\01\04\01")
+  (data (i32.const 12) "\07\05\02\03\06")
+  (func (export "test")
+    (memory.copy (i32.const 25) (i32.const 15) (i32.const 2)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(invoke "test")
+
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 6)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 7)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 8)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 16)) (i32.const 6))
+(assert_return (invoke "load8_u" (i32.const 17)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 18)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 19)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 20)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 21)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 22)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 23)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 25)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 26)) (i32.const 6))
+(assert_return (invoke "load8_u" (i32.const 27)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 28)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 29)) (i32.const 0))
+
+(module
+  (memory (export "memory0") 1 1)
+  (data (i32.const 2) "\03\01\04\01")
+  (data (i32.const 12) "\07\05\02\03\06")
+  (func (export "test")
+    (memory.copy (i32.const 13) (i32.const 25) (i32.const 3)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(invoke "test")
+
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
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+  (data (i32.const 0) "\00\01\02\03\04\05\06\07\08\09\0a\0b\0c\0d\0e\0f\10\11\12\13\14")
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+
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+    (memory.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
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+
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+    (memory.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(assert_trap (invoke "run" (i32.const 65486) (i32.const 65516) (i32.const 40))
+             "out of bounds")
+
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+  (data (i32.const 65516) "\00\01\02\03\04\05\06\07\08\09\0a\0b\0c\0d\0e\0f\10\11\12\13")
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
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+  (func (export "load8_u") (param i32) (result i32)
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+
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+
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+  (data (i32.const 65516) "\00\01\02\03\04\05\06\07\08\09\0a\0b\0c\0d\0e\0f\10\11\12\13")
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (memory.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
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+             "out of bounds")
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+
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+    (func (export "testfn")
+      (memory.copy (i32.const 10) (i32.const 20) (i32.const 30))))
+  "unknown memory 0")
+
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+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (i32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (i32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (i32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (f32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (f32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (f32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (f32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (i64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (i64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (i64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (i64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (f64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (f64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (f64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i32.const 10) (f64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (i32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (i32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (i32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (i32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (f32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (f32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (f32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (f32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (i64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (i64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (i64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (i64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (f64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (f64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (f64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f32.const 10) (f64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (i32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (i32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (i32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (i32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (f32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (f32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (f32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (f32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (i64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (i64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (i64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (i64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (f64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (f64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (f64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (i64.const 10) (f64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (i32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (i32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (i32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (i32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (f32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (f32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (f32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (f32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (i64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (i64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (i64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (i64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (f64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (f64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (f64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.copy (f64.const 10) (f64.const 20) (f64.const 30))))
+  "type mismatch")
+
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.fill (i32.const 10) (i32.const 0x55) (i32.const 10))
+    (memory.copy (i32.const 9) (i32.const 10) (i32.const 5)))
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+)
+(invoke "test")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 9) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 9) (i32.const 20) (i32.const 85))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 20) (i32.const 65536) (i32.const 0))
+               (i32.const -1))
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.fill (i32.const 10) (i32.const 0x55) (i32.const 10))
+    (memory.copy (i32.const 16) (i32.const 15) (i32.const 5)))
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+)
+(invoke "test")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 10) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 10) (i32.const 21) (i32.const 85))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 21) (i32.const 65536) (i32.const 0))
+               (i32.const -1))
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0xFF00) (i32.const 0x8000) (i32.const 257))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0xFFFFFF00) (i32.const 0x4000) (i32.const 257))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0x8000) (i32.const 0xFF00) (i32.const 257))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+ (memory 1 1)
+ (func (export "test")
+   (memory.copy (i32.const 0x4000) (i32.const 0xFFFFFF00) (i32.const 257))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.fill (i32.const 0x0000) (i32.const 0x55) (i32.const 0x8000))
+    (memory.fill (i32.const 0x8000) (i32.const 0xAA) (i32.const 0x8000))
+    (memory.copy (i32.const 0x9000) (i32.const 0x7000) (i32.const 0)))
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+)
+(invoke "test")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 32768) (i32.const 85))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 32768) (i32.const 65536) (i32.const 170))
+               (i32.const -1))
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0x10000) (i32.const 0x7000) (i32.const 0))))
+(invoke "test")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0x20000) (i32.const 0x7000) (i32.const 0))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0x9000) (i32.const 0x10000) (i32.const 0))))
+(invoke "test")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0x9000) (i32.const 0x20000) (i32.const 0))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0x10000) (i32.const 0x10000) (i32.const 0))))
+(invoke "test")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.copy (i32.const 0x20000) (i32.const 0x20000) (i32.const 0))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1 1)
+  (func (export "test")
+    (memory.fill (i32.const 17767) (i32.const 1) (i32.const 1344))
+    (memory.fill (i32.const 39017) (i32.const 2) (i32.const 1055))
+    (memory.fill (i32.const 56401) (i32.const 3) (i32.const 988))
+    (memory.fill (i32.const 37962) (i32.const 4) (i32.const 322))
+    (memory.fill (i32.const 7977) (i32.const 5) (i32.const 1994))
+    (memory.fill (i32.const 22714) (i32.const 6) (i32.const 3036))
+    (memory.fill (i32.const 16882) (i32.const 7) (i32.const 2372))
+    (memory.fill (i32.const 43491) (i32.const 8) (i32.const 835))
+    (memory.fill (i32.const 124) (i32.const 9) (i32.const 1393))
+    (memory.fill (i32.const 2132) (i32.const 10) (i32.const 2758))
+    (memory.fill (i32.const 8987) (i32.const 11) (i32.const 3098))
+    (memory.fill (i32.const 52711) (i32.const 12) (i32.const 741))
+    (memory.fill (i32.const 3958) (i32.const 13) (i32.const 2823))
+    (memory.fill (i32.const 49715) (i32.const 14) (i32.const 1280))
+    (memory.fill (i32.const 50377) (i32.const 15) (i32.const 1466))
+    (memory.fill (i32.const 20493) (i32.const 16) (i32.const 3158))
+    (memory.fill (i32.const 47665) (i32.const 17) (i32.const 544))
+    (memory.fill (i32.const 12451) (i32.const 18) (i32.const 2669))
+    (memory.fill (i32.const 24869) (i32.const 19) (i32.const 2651))
+    (memory.fill (i32.const 45317) (i32.const 20) (i32.const 1570))
+    (memory.fill (i32.const 43096) (i32.const 21) (i32.const 1691))
+    (memory.fill (i32.const 33886) (i32.const 22) (i32.const 646))
+    (memory.fill (i32.const 48555) (i32.const 23) (i32.const 1858))
+    (memory.fill (i32.const 53453) (i32.const 24) (i32.const 2657))
+    (memory.fill (i32.const 30363) (i32.const 25) (i32.const 981))
+    (memory.fill (i32.const 9300) (i32.const 26) (i32.const 1807))
+    (memory.fill (i32.const 50190) (i32.const 27) (i32.const 487))
+    (memory.fill (i32.const 62753) (i32.const 28) (i32.const 530))
+    (memory.fill (i32.const 36316) (i32.const 29) (i32.const 943))
+    (memory.fill (i32.const 6768) (i32.const 30) (i32.const 381))
+    (memory.fill (i32.const 51262) (i32.const 31) (i32.const 3089))
+    (memory.fill (i32.const 49729) (i32.const 32) (i32.const 658))
+    (memory.fill (i32.const 44540) (i32.const 33) (i32.const 1702))
+    (memory.fill (i32.const 33342) (i32.const 34) (i32.const 1092))
+    (memory.fill (i32.const 50814) (i32.const 35) (i32.const 1410))
+    (memory.fill (i32.const 47594) (i32.const 36) (i32.const 2204))
+    (memory.fill (i32.const 54123) (i32.const 37) (i32.const 2394))
+    (memory.fill (i32.const 55183) (i32.const 38) (i32.const 250))
+    (memory.fill (i32.const 22620) (i32.const 39) (i32.const 2097))
+    (memory.fill (i32.const 17132) (i32.const 40) (i32.const 3264))
+    (memory.fill (i32.const 54331) (i32.const 41) (i32.const 3299))
+    (memory.fill (i32.const 39474) (i32.const 42) (i32.const 2796))
+    (memory.fill (i32.const 36156) (i32.const 43) (i32.const 2070))
+    (memory.fill (i32.const 35308) (i32.const 44) (i32.const 2763))
+    (memory.fill (i32.const 32731) (i32.const 45) (i32.const 312))
+    (memory.fill (i32.const 63746) (i32.const 46) (i32.const 192))
+    (memory.fill (i32.const 30974) (i32.const 47) (i32.const 596))
+    (memory.fill (i32.const 16635) (i32.const 48) (i32.const 501))
+    (memory.fill (i32.const 57002) (i32.const 49) (i32.const 686))
+    (memory.fill (i32.const 34299) (i32.const 50) (i32.const 385))
+    (memory.fill (i32.const 60881) (i32.const 51) (i32.const 903))
+    (memory.fill (i32.const 61445) (i32.const 52) (i32.const 2390))
+    (memory.fill (i32.const 46972) (i32.const 53) (i32.const 1441))
+    (memory.fill (i32.const 25973) (i32.const 54) (i32.const 3162))
+    (memory.fill (i32.const 5566) (i32.const 55) (i32.const 2135))
+    (memory.fill (i32.const 35977) (i32.const 56) (i32.const 519))
+    (memory.fill (i32.const 44892) (i32.const 57) (i32.const 3280))
+    (memory.fill (i32.const 46760) (i32.const 58) (i32.const 1678))
+    (memory.fill (i32.const 46607) (i32.const 59) (i32.const 3168))
+    (memory.fill (i32.const 22449) (i32.const 60) (i32.const 1441))
+    (memory.fill (i32.const 58609) (i32.const 61) (i32.const 663))
+    (memory.fill (i32.const 32261) (i32.const 62) (i32.const 1671))
+    (memory.fill (i32.const 3063) (i32.const 63) (i32.const 721))
+    (memory.fill (i32.const 34025) (i32.const 64) (i32.const 84))
+    (memory.fill (i32.const 33338) (i32.const 65) (i32.const 2029))
+    (memory.fill (i32.const 36810) (i32.const 66) (i32.const 29))
+    (memory.fill (i32.const 19147) (i32.const 67) (i32.const 3034))
+    (memory.fill (i32.const 12616) (i32.const 68) (i32.const 1043))
+    (memory.fill (i32.const 18276) (i32.const 69) (i32.const 3324))
+    (memory.fill (i32.const 4639) (i32.const 70) (i32.const 1091))
+    (memory.fill (i32.const 16158) (i32.const 71) (i32.const 1997))
+    (memory.fill (i32.const 18204) (i32.const 72) (i32.const 2259))
+    (memory.fill (i32.const 50532) (i32.const 73) (i32.const 3189))
+    (memory.fill (i32.const 11028) (i32.const 74) (i32.const 1968))
+    (memory.fill (i32.const 15962) (i32.const 75) (i32.const 1455))
+    (memory.fill (i32.const 45406) (i32.const 76) (i32.const 1177))
+    (memory.fill (i32.const 54137) (i32.const 77) (i32.const 1568))
+    (memory.fill (i32.const 33083) (i32.const 78) (i32.const 1642))
+    (memory.fill (i32.const 61028) (i32.const 79) (i32.const 3284))
+    (memory.fill (i32.const 51729) (i32.const 80) (i32.const 223))
+    (memory.fill (i32.const 4361) (i32.const 81) (i32.const 2171))
+    (memory.fill (i32.const 57514) (i32.const 82) (i32.const 1322))
+    (memory.fill (i32.const 55724) (i32.const 83) (i32.const 2648))
+    (memory.fill (i32.const 24091) (i32.const 84) (i32.const 1045))
+    (memory.fill (i32.const 43183) (i32.const 85) (i32.const 3097))
+    (memory.fill (i32.const 32307) (i32.const 86) (i32.const 2796))
+    (memory.fill (i32.const 3811) (i32.const 87) (i32.const 2010))
+    (memory.fill (i32.const 54856) (i32.const 88) (i32.const 0))
+    (memory.fill (i32.const 49941) (i32.const 89) (i32.const 2069))
+    (memory.fill (i32.const 20411) (i32.const 90) (i32.const 2896))
+    (memory.fill (i32.const 33826) (i32.const 91) (i32.const 192))
+    (memory.fill (i32.const 9402) (i32.const 92) (i32.const 2195))
+    (memory.fill (i32.const 12413) (i32.const 93) (i32.const 24))
+    (memory.fill (i32.const 14091) (i32.const 94) (i32.const 577))
+    (memory.fill (i32.const 44058) (i32.const 95) (i32.const 2089))
+    (memory.fill (i32.const 36735) (i32.const 96) (i32.const 3436))
+    (memory.fill (i32.const 23288) (i32.const 97) (i32.const 2765))
+    (memory.fill (i32.const 6392) (i32.const 98) (i32.const 830))
+    (memory.fill (i32.const 33307) (i32.const 99) (i32.const 1938))
+    (memory.fill (i32.const 21941) (i32.const 100) (i32.const 2750))
+    (memory.copy (i32.const 59214) (i32.const 54248) (i32.const 2098))
+    (memory.copy (i32.const 63026) (i32.const 39224) (i32.const 230))
+    (memory.copy (i32.const 51833) (i32.const 23629) (i32.const 2300))
+    (memory.copy (i32.const 6708) (i32.const 23996) (i32.const 639))
+    (memory.copy (i32.const 6990) (i32.const 33399) (i32.const 1097))
+    (memory.copy (i32.const 19403) (i32.const 10348) (i32.const 3197))
+    (memory.copy (i32.const 27308) (i32.const 54406) (i32.const 100))
+    (memory.copy (i32.const 27221) (i32.const 43682) (i32.const 1717))
+    (memory.copy (i32.const 60528) (i32.const 8629) (i32.const 119))
+    (memory.copy (i32.const 5947) (i32.const 2308) (i32.const 658))
+    (memory.copy (i32.const 4787) (i32.const 51631) (i32.const 2269))
+    (memory.copy (i32.const 12617) (i32.const 19197) (i32.const 833))
+    (memory.copy (i32.const 11854) (i32.const 46505) (i32.const 3300))
+    (memory.copy (i32.const 11376) (i32.const 45012) (i32.const 2281))
+    (memory.copy (i32.const 34186) (i32.const 6697) (i32.const 2572))
+    (memory.copy (i32.const 4936) (i32.const 1690) (i32.const 1328))
+    (memory.copy (i32.const 63164) (i32.const 7637) (i32.const 1670))
+    (memory.copy (i32.const 44568) (i32.const 18344) (i32.const 33))
+    (memory.copy (i32.const 43918) (i32.const 22348) (i32.const 1427))
+    (memory.copy (i32.const 46637) (i32.const 49819) (i32.const 1434))
+    (memory.copy (i32.const 63684) (i32.const 8755) (i32.const 834))
+    (memory.copy (i32.const 33485) (i32.const 20131) (i32.const 3317))
+    (memory.copy (i32.const 40575) (i32.const 54317) (i32.const 3201))
+    (memory.copy (i32.const 25812) (i32.const 59254) (i32.const 2452))
+    (memory.copy (i32.const 19678) (i32.const 56882) (i32.const 346))
+    (memory.copy (i32.const 15852) (i32.const 35914) (i32.const 2430))
+    (memory.copy (i32.const 11824) (i32.const 35574) (i32.const 300))
+    (memory.copy (i32.const 59427) (i32.const 13957) (i32.const 3153))
+    (memory.copy (i32.const 34299) (i32.const 60594) (i32.const 1281))
+    (memory.copy (i32.const 8964) (i32.const 12276) (i32.const 943))
+    (memory.copy (i32.const 2827) (i32.const 10425) (i32.const 1887))
+    (memory.copy (i32.const 43194) (i32.const 43910) (i32.const 738))
+    (memory.copy (i32.const 63038) (i32.const 18949) (i32.const 122))
+    (memory.copy (i32.const 24044) (i32.const 44761) (i32.const 1755))
+    (memory.copy (i32.const 22608) (i32.const 14755) (i32.const 702))
+    (memory.copy (i32.const 11284) (i32.const 26579) (i32.const 1830))
+    (memory.copy (i32.const 23092) (i32.const 20471) (i32.const 1064))
+    (memory.copy (i32.const 57248) (i32.const 54770) (i32.const 2631))
+    (memory.copy (i32.const 25492) (i32.const 1025) (i32.const 3113))
+    (memory.copy (i32.const 49588) (i32.const 44220) (i32.const 975))
+    (memory.copy (i32.const 28280) (i32.const 41722) (i32.const 2336))
+    (memory.copy (i32.const 61289) (i32.const 230) (i32.const 2872))
+    (memory.copy (i32.const 22480) (i32.const 52506) (i32.const 2197))
+    (memory.copy (i32.const 40553) (i32.const 9578) (i32.const 1958))
+    (memory.copy (i32.const 29004) (i32.const 20862) (i32.const 2186))
+    (memory.copy (i32.const 53029) (i32.const 43955) (i32.const 1037))
+    (memory.copy (i32.const 25476) (i32.const 35667) (i32.const 1650))
+    (memory.copy (i32.const 58516) (i32.const 45819) (i32.const 1986))
+    (memory.copy (i32.const 38297) (i32.const 5776) (i32.const 1955))
+    (memory.copy (i32.const 28503) (i32.const 55364) (i32.const 2368))
+    (memory.copy (i32.const 62619) (i32.const 18108) (i32.const 1356))
+    (memory.copy (i32.const 50149) (i32.const 13861) (i32.const 382))
+    (memory.copy (i32.const 16904) (i32.const 36341) (i32.const 1900))
+    (memory.copy (i32.const 48098) (i32.const 11358) (i32.const 2807))
+    (memory.copy (i32.const 28512) (i32.const 40362) (i32.const 323))
+    (memory.copy (i32.const 35506) (i32.const 27856) (i32.const 1670))
+    (memory.copy (i32.const 62970) (i32.const 53332) (i32.const 1341))
+    (memory.copy (i32.const 14133) (i32.const 46312) (i32.const 644))
+    (memory.copy (i32.const 29030) (i32.const 19074) (i32.const 496))
+    (memory.copy (i32.const 44952) (i32.const 47577) (i32.const 2784))
+    (memory.copy (i32.const 39559) (i32.const 44661) (i32.const 1350))
+    (memory.copy (i32.const 10352) (i32.const 29274) (i32.const 1475))
+    (memory.copy (i32.const 46911) (i32.const 46178) (i32.const 1467))
+    (memory.copy (i32.const 4905) (i32.const 28740) (i32.const 1895))
+    (memory.copy (i32.const 38012) (i32.const 57253) (i32.const 1751))
+    (memory.copy (i32.const 26446) (i32.const 27223) (i32.const 1127))
+    (memory.copy (i32.const 58835) (i32.const 24657) (i32.const 1063))
+    (memory.copy (i32.const 61356) (i32.const 38790) (i32.const 766))
+    (memory.copy (i32.const 44160) (i32.const 2284) (i32.const 1520))
+    (memory.copy (i32.const 32740) (i32.const 47237) (i32.const 3014))
+    (memory.copy (i32.const 11148) (i32.const 21260) (i32.const 1011))
+    (memory.copy (i32.const 7665) (i32.const 31612) (i32.const 3034))
+    (memory.copy (i32.const 18044) (i32.const 12987) (i32.const 3320))
+    (memory.copy (i32.const 57306) (i32.const 55905) (i32.const 308))
+    (memory.copy (i32.const 24675) (i32.const 16815) (i32.const 1155))
+    (memory.copy (i32.const 19900) (i32.const 10115) (i32.const 722))
+    (memory.copy (i32.const 2921) (i32.const 5935) (i32.const 2370))
+    (memory.copy (i32.const 32255) (i32.const 50095) (i32.const 2926))
+    (memory.copy (i32.const 15126) (i32.const 17299) (i32.const 2607))
+    (memory.copy (i32.const 45575) (i32.const 28447) (i32.const 2045))
+    (memory.copy (i32.const 55149) (i32.const 36113) (i32.const 2596))
+    (memory.copy (i32.const 28461) (i32.const 54157) (i32.const 1168))
+    (memory.copy (i32.const 47951) (i32.const 53385) (i32.const 3137))
+    (memory.copy (i32.const 30646) (i32.const 45155) (i32.const 2649))
+    (memory.copy (i32.const 5057) (i32.const 4295) (i32.const 52))
+    (memory.copy (i32.const 6692) (i32.const 24195) (i32.const 441))
+    (memory.copy (i32.const 32984) (i32.const 27117) (i32.const 3445))
+    (memory.copy (i32.const 32530) (i32.const 59372) (i32.const 2785))
+    (memory.copy (i32.const 34361) (i32.const 8962) (i32.const 2406))
+    (memory.copy (i32.const 17893) (i32.const 54538) (i32.const 3381))
+    (memory.copy (i32.const 22685) (i32.const 44151) (i32.const 136))
+    (memory.copy (i32.const 59089) (i32.const 7077) (i32.const 1045))
+    (memory.copy (i32.const 42945) (i32.const 55028) (i32.const 2389))
+    (memory.copy (i32.const 44693) (i32.const 20138) (i32.const 877))
+    (memory.copy (i32.const 36810) (i32.const 25196) (i32.const 3447))
+    (memory.copy (i32.const 45742) (i32.const 31888) (i32.const 854))
+    (memory.copy (i32.const 24236) (i32.const 31866) (i32.const 1377))
+    (memory.copy (i32.const 33778) (i32.const 692) (i32.const 1594))
+    (memory.copy (i32.const 60618) (i32.const 18585) (i32.const 2987))
+    (memory.copy (i32.const 50370) (i32.const 41271) (i32.const 1406))
+  )
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+)
+(invoke "test")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 124) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 124) (i32.const 1517) (i32.const 9))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 1517) (i32.const 2132) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 2132) (i32.const 2827) (i32.const 10))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 2827) (i32.const 2921) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 2921) (i32.const 3538) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 3538) (i32.const 3786) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 3786) (i32.const 4042) (i32.const 97))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 4042) (i32.const 4651) (i32.const 99))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 4651) (i32.const 5057) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 5057) (i32.const 5109) (i32.const 99))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 5109) (i32.const 5291) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 5291) (i32.const 5524) (i32.const 72))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 5524) (i32.const 5691) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 5691) (i32.const 6552) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 6552) (i32.const 7133) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 7133) (i32.const 7665) (i32.const 99))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 7665) (i32.const 8314) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 8314) (i32.const 8360) (i32.const 62))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 8360) (i32.const 8793) (i32.const 86))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 8793) (i32.const 8979) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 8979) (i32.const 9373) (i32.const 79))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 9373) (i32.const 9518) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 9518) (i32.const 9934) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 9934) (i32.const 10087) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 10087) (i32.const 10206) (i32.const 5))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 10206) (i32.const 10230) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 10230) (i32.const 10249) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 10249) (i32.const 11148) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 11148) (i32.const 11356) (i32.const 74))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 11356) (i32.const 11380) (i32.const 93))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 11380) (i32.const 11939) (i32.const 74))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 11939) (i32.const 12159) (i32.const 68))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 12159) (i32.const 12575) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 12575) (i32.const 12969) (i32.const 79))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 12969) (i32.const 13114) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 13114) (i32.const 14133) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 14133) (i32.const 14404) (i32.const 76))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 14404) (i32.const 14428) (i32.const 57))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 14428) (i32.const 14458) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 14458) (i32.const 14580) (i32.const 32))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 14580) (i32.const 14777) (i32.const 89))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 14777) (i32.const 15124) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 15124) (i32.const 15126) (i32.const 36))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 15126) (i32.const 15192) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 15192) (i32.const 15871) (i32.const 96))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 15871) (i32.const 15998) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 15998) (i32.const 17017) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17017) (i32.const 17288) (i32.const 76))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17288) (i32.const 17312) (i32.const 57))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17312) (i32.const 17342) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17342) (i32.const 17464) (i32.const 32))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17464) (i32.const 17661) (i32.const 89))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17661) (i32.const 17727) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17727) (i32.const 17733) (i32.const 5))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17733) (i32.const 17893) (i32.const 96))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 17893) (i32.const 18553) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 18553) (i32.const 18744) (i32.const 42))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 18744) (i32.const 18801) (i32.const 76))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 18801) (i32.const 18825) (i32.const 57))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 18825) (i32.const 18876) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 18876) (i32.const 18885) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 18885) (i32.const 18904) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 18904) (i32.const 19567) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 19567) (i32.const 20403) (i32.const 96))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 20403) (i32.const 21274) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 21274) (i32.const 21364) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 21364) (i32.const 21468) (i32.const 74))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 21468) (i32.const 21492) (i32.const 93))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 21492) (i32.const 22051) (i32.const 74))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 22051) (i32.const 22480) (i32.const 68))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 22480) (i32.const 22685) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 22685) (i32.const 22694) (i32.const 68))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 22694) (i32.const 22821) (i32.const 10))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 22821) (i32.const 22869) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 22869) (i32.const 24107) (i32.const 97))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 24107) (i32.const 24111) (i32.const 37))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 24111) (i32.const 24236) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 24236) (i32.const 24348) (i32.const 72))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 24348) (i32.const 24515) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 24515) (i32.const 24900) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 24900) (i32.const 25136) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 25136) (i32.const 25182) (i32.const 85))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 25182) (i32.const 25426) (i32.const 68))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 25426) (i32.const 25613) (i32.const 89))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 25613) (i32.const 25830) (i32.const 96))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 25830) (i32.const 26446) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 26446) (i32.const 26517) (i32.const 10))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 26517) (i32.const 27468) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 27468) (i32.const 27503) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 27503) (i32.const 27573) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 27573) (i32.const 28245) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 28245) (i32.const 28280) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 28280) (i32.const 29502) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 29502) (i32.const 29629) (i32.const 42))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 29629) (i32.const 30387) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 30387) (i32.const 30646) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 30646) (i32.const 31066) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31066) (i32.const 31131) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31131) (i32.const 31322) (i32.const 42))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31322) (i32.const 31379) (i32.const 76))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31379) (i32.const 31403) (i32.const 57))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31403) (i32.const 31454) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31454) (i32.const 31463) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31463) (i32.const 31482) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31482) (i32.const 31649) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31649) (i32.const 31978) (i32.const 72))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 31978) (i32.const 32145) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 32145) (i32.const 32530) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 32530) (i32.const 32766) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 32766) (i32.const 32812) (i32.const 85))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 32812) (i32.const 33056) (i32.const 68))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 33056) (i32.const 33660) (i32.const 89))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 33660) (i32.const 33752) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 33752) (i32.const 33775) (i32.const 36))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 33775) (i32.const 33778) (i32.const 32))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 33778) (i32.const 34603) (i32.const 9))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 34603) (i32.const 35218) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 35218) (i32.const 35372) (i32.const 10))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 35372) (i32.const 35486) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 35486) (i32.const 35605) (i32.const 5))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 35605) (i32.const 35629) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 35629) (i32.const 35648) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 35648) (i32.const 36547) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 36547) (i32.const 36755) (i32.const 74))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 36755) (i32.const 36767) (i32.const 93))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 36767) (i32.const 36810) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 36810) (i32.const 36839) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 36839) (i32.const 37444) (i32.const 96))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 37444) (i32.const 38060) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 38060) (i32.const 38131) (i32.const 10))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 38131) (i32.const 39082) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 39082) (i32.const 39117) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 39117) (i32.const 39187) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 39187) (i32.const 39859) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 39859) (i32.const 39894) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 39894) (i32.const 40257) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 40257) (i32.const 40344) (i32.const 89))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 40344) (i32.const 40371) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 40371) (i32.const 40804) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 40804) (i32.const 40909) (i32.const 5))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 40909) (i32.const 42259) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 42259) (i32.const 42511) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 42511) (i32.const 42945) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 42945) (i32.const 43115) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 43115) (i32.const 43306) (i32.const 42))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 43306) (i32.const 43363) (i32.const 76))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 43363) (i32.const 43387) (i32.const 57))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 43387) (i32.const 43438) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 43438) (i32.const 43447) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 43447) (i32.const 43466) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 43466) (i32.const 44129) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 44129) (i32.const 44958) (i32.const 96))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 44958) (i32.const 45570) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 45570) (i32.const 45575) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 45575) (i32.const 45640) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 45640) (i32.const 45742) (i32.const 42))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 45742) (i32.const 45832) (i32.const 72))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 45832) (i32.const 45999) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 45999) (i32.const 46384) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 46384) (i32.const 46596) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 46596) (i32.const 46654) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 46654) (i32.const 47515) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 47515) (i32.const 47620) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 47620) (i32.const 47817) (i32.const 79))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 47817) (i32.const 47951) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 47951) (i32.const 48632) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 48632) (i32.const 48699) (i32.const 97))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 48699) (i32.const 48703) (i32.const 37))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 48703) (i32.const 49764) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 49764) (i32.const 49955) (i32.const 42))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 49955) (i32.const 50012) (i32.const 76))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 50012) (i32.const 50036) (i32.const 57))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 50036) (i32.const 50087) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 50087) (i32.const 50096) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 50096) (i32.const 50115) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 50115) (i32.const 50370) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 50370) (i32.const 51358) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 51358) (i32.const 51610) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 51610) (i32.const 51776) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 51776) (i32.const 51833) (i32.const 89))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 51833) (i32.const 52895) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 52895) (i32.const 53029) (i32.const 97))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 53029) (i32.const 53244) (i32.const 68))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 53244) (i32.const 54066) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 54066) (i32.const 54133) (i32.const 97))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 54133) (i32.const 54137) (i32.const 37))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 54137) (i32.const 55198) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 55198) (i32.const 55389) (i32.const 42))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 55389) (i32.const 55446) (i32.const 76))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 55446) (i32.const 55470) (i32.const 57))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 55470) (i32.const 55521) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 55521) (i32.const 55530) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 55530) (i32.const 55549) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 55549) (i32.const 56212) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 56212) (i32.const 57048) (i32.const 96))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 57048) (i32.const 58183) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 58183) (i32.const 58202) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 58202) (i32.const 58516) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 58516) (i32.const 58835) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 58835) (i32.const 58855) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 58855) (i32.const 59089) (i32.const 95))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 59089) (i32.const 59145) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 59145) (i32.const 59677) (i32.const 99))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 59677) (i32.const 60134) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60134) (i32.const 60502) (i32.const 89))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60502) (i32.const 60594) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60594) (i32.const 60617) (i32.const 36))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60617) (i32.const 60618) (i32.const 32))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60618) (i32.const 60777) (i32.const 42))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60777) (i32.const 60834) (i32.const 76))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60834) (i32.const 60858) (i32.const 57))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60858) (i32.const 60909) (i32.const 59))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60909) (i32.const 60918) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60918) (i32.const 60937) (i32.const 41))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 60937) (i32.const 61600) (i32.const 83))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 61600) (i32.const 62436) (i32.const 96))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 62436) (i32.const 63307) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 63307) (i32.const 63397) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 63397) (i32.const 63501) (i32.const 74))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 63501) (i32.const 63525) (i32.const 93))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 63525) (i32.const 63605) (i32.const 74))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 63605) (i32.const 63704) (i32.const 100))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 63704) (i32.const 63771) (i32.const 97))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 63771) (i32.const 63775) (i32.const 37))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 63775) (i32.const 64311) (i32.const 77))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 64311) (i32.const 64331) (i32.const 26))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 64331) (i32.const 64518) (i32.const 92))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 64518) (i32.const 64827) (i32.const 11))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 64827) (i32.const 64834) (i32.const 26))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 64834) (i32.const 65536) (i32.const 0))
+               (i32.const -1))
diff --git a/tests/wast/reference-types/memory_fill.wast b/tests/wast/reference-types/memory_fill.wast
new file mode 100644
index 00000000..99fd63dd
--- /dev/null
+++ b/tests/wast/reference-types/memory_fill.wast
@@ -0,0 +1,686 @@
+;;
+;; Generated by ../meta/generate_memory_fill.js
+;; DO NOT EDIT THIS FILE.  CHANGE THE SOURCE AND REGENERATE.
+;;
+
+(module
+  (memory 1 1)
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "test")
+    (memory.fill (i32.const 0xFF00) (i32.const 0x55) (i32.const 256))))
+(invoke "test")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 65280) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 65280) (i32.const 65536) (i32.const 85))
+               (i32.const -1))
+(module
+  (memory 1 1)
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "test")
+    (memory.fill (i32.const 0xFF00) (i32.const 0x55) (i32.const 257))))
+(assert_trap (invoke "test") "out of bounds memory access")
+
+(module
+  (memory 1 1)
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "test")
+    (memory.fill (i32.const 0xFFFFFF00) (i32.const 0x55) (i32.const 257))))
+(assert_trap (invoke "test") "out of bounds memory access")
+
+(module
+  (memory 1 1)
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "test")
+    (memory.fill (i32.const 0x12) (i32.const 0x55) (i32.const 0))))
+(invoke "test")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 65536) (i32.const 0))
+               (i32.const -1))
+(module
+  (memory 1 1)
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "test")
+    (memory.fill (i32.const 0x10000) (i32.const 0x55) (i32.const 0))))
+(invoke "test")
+
+(module
+  (memory 1 1)
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "test")
+    (memory.fill (i32.const 0x20000) (i32.const 0x55) (i32.const 0))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1 1)
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "test")
+    (memory.fill (i32.const 0x1) (i32.const 0xAA) (i32.const 0xFFFE))))
+(invoke "test")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 1) (i32.const 65535) (i32.const 170))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 65535) (i32.const 65536) (i32.const 0))
+               (i32.const -1))
+
+(module
+  (memory 1 1)
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "test")
+     (memory.fill (i32.const 0x12) (i32.const 0x55) (i32.const 10))
+     (memory.fill (i32.const 0x15) (i32.const 0xAA) (i32.const 4))))
+(invoke "test")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 18) (i32.const 0))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 18) (i32.const 21) (i32.const 85))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 21) (i32.const 25) (i32.const 170))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 25) (i32.const 28) (i32.const 85))
+               (i32.const -1))
+(assert_return (invoke "checkRange" (i32.const 28) (i32.const 65536) (i32.const 0))
+               (i32.const -1))
+(assert_invalid
+  (module
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (i32.const 20) (i32.const 30))))
+  "unknown memory 0")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (i32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (i32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (i32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (f32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (f32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (f32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (f32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (i64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (i64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (i64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (i64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (f64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (f64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (f64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i32.const 10) (f64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (i32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (i32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (i32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (i32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (f32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (f32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (f32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (f32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (i64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (i64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (i64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (i64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (f64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (f64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (f64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f32.const 10) (f64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (i32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (i32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (i32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (i32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (f32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (f32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (f32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (f32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (i64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (i64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (i64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (i64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (f64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (f64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (f64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (i64.const 10) (f64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (i32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (i32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (i32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (i32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (f32.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (f32.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (f32.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (f32.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (i64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (i64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (i64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (i64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (f64.const 20) (i32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (f64.const 20) (f32.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (f64.const 20) (i64.const 30))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1 1)
+    (func (export "testfn")
+      (memory.fill (f64.const 10) (f64.const 20) (f64.const 30))))
+  "type mismatch")
+
+(module
+  (memory 1 1 )
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $val i32) (param $len i32)
+    (memory.fill (local.get $offs) (local.get $val) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 65280) (i32.const 37) (i32.const 512))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
+(module
+  (memory 1 1 )
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $val i32) (param $len i32)
+    (memory.fill (local.get $offs) (local.get $val) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 65279) (i32.const 37) (i32.const 514))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
+(module
+  (memory 1 1 )
+  
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $val i32) (param $len i32)
+    (memory.fill (local.get $offs) (local.get $val) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 65279) (i32.const 37) (i32.const 4294967295))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
diff --git a/tests/wast/reference-types/memory_init.wast b/tests/wast/reference-types/memory_init.wast
new file mode 100644
index 00000000..61cef4ef
--- /dev/null
+++ b/tests/wast/reference-types/memory_init.wast
@@ -0,0 +1,952 @@
+;;
+;; Generated by ../meta/generate_memory_init.js
+;; DO NOT EDIT THIS FILE.  CHANGE THE SOURCE AND REGENERATE.
+;;
+
+(module
+  (memory (export "memory0") 1 1)
+  (data (i32.const 2) "\03\01\04\01")
+  (data "\02\07\01\08")
+  (data (i32.const 12) "\07\05\02\03\06")
+  (data "\05\09\02\07\06")
+  (func (export "test")
+    (nop))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(invoke "test")
+
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 6)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 7)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 8)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 16)) (i32.const 6))
+(assert_return (invoke "load8_u" (i32.const 17)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 18)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 19)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 20)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 21)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 22)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 23)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 25)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 26)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 27)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 28)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 29)) (i32.const 0))
+
+(module
+  (memory (export "memory0") 1 1)
+  (data (i32.const 2) "\03\01\04\01")
+  (data "\02\07\01\08")
+  (data (i32.const 12) "\07\05\02\03\06")
+  (data "\05\09\02\07\06")
+  (func (export "test")
+    (memory.init 1 (i32.const 7) (i32.const 0) (i32.const 4)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(invoke "test")
+
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 6)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 7)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 8)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 8))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 16)) (i32.const 6))
+(assert_return (invoke "load8_u" (i32.const 17)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 18)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 19)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 20)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 21)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 22)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 23)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 25)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 26)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 27)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 28)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 29)) (i32.const 0))
+
+(module
+  (memory (export "memory0") 1 1)
+  (data (i32.const 2) "\03\01\04\01")
+  (data "\02\07\01\08")
+  (data (i32.const 12) "\07\05\02\03\06")
+  (data "\05\09\02\07\06")
+  (func (export "test")
+    (memory.init 3 (i32.const 15) (i32.const 1) (i32.const 3)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(invoke "test")
+
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 6)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 7)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 8)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 15)) (i32.const 9))
+(assert_return (invoke "load8_u" (i32.const 16)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 17)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 18)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 19)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 20)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 21)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 22)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 23)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 25)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 26)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 27)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 28)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 29)) (i32.const 0))
+
+(module
+  (memory (export "memory0") 1 1)
+  (data (i32.const 2) "\03\01\04\01")
+  (data "\02\07\01\08")
+  (data (i32.const 12) "\07\05\02\03\06")
+  (data "\05\09\02\07\06")
+  (func (export "test")
+    (memory.init 1 (i32.const 7) (i32.const 0) (i32.const 4))
+    (data.drop 1)
+    (memory.init 3 (i32.const 15) (i32.const 1) (i32.const 3))
+    (data.drop 3)
+    (memory.copy (i32.const 20) (i32.const 15) (i32.const 5))
+    (memory.copy (i32.const 21) (i32.const 29) (i32.const 1))
+    (memory.copy (i32.const 24) (i32.const 10) (i32.const 1))
+    (memory.copy (i32.const 13) (i32.const 11) (i32.const 4))
+    (memory.copy (i32.const 19) (i32.const 20) (i32.const 5)))
+  (func (export "load8_u") (param i32) (result i32)
+    (i32.load8_u (local.get 0))))
+
+(invoke "test")
+
+(assert_return (invoke "load8_u" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "load8_u" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "load8_u" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 6)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 7)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 8)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 9)) (i32.const 1))
+(assert_return (invoke "load8_u" (i32.const 10)) (i32.const 8))
+(assert_return (invoke "load8_u" (i32.const 11)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 13)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 14)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 15)) (i32.const 5))
+(assert_return (invoke "load8_u" (i32.const 16)) (i32.const 2))
+(assert_return (invoke "load8_u" (i32.const 17)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 18)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 19)) (i32.const 9))
+(assert_return (invoke "load8_u" (i32.const 20)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 21)) (i32.const 7))
+(assert_return (invoke "load8_u" (i32.const 22)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 23)) (i32.const 8))
+(assert_return (invoke "load8_u" (i32.const 24)) (i32.const 8))
+(assert_return (invoke "load8_u" (i32.const 25)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 26)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 27)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 28)) (i32.const 0))
+(assert_return (invoke "load8_u" (i32.const 29)) (i32.const 0))
+(assert_invalid
+   (module
+     (func (export "test")
+       (data.drop 0)))
+   "unknown data segment 0")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (data.drop 4)))
+  "unknown data segment")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (data.drop 0)
+    (data.drop 0)))
+(invoke "test")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (data.drop 0)
+    (memory.init 0 (i32.const 1234) (i32.const 1) (i32.const 1))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+   (memory 1)
+   (data (i32.const 0) "\37")
+   (func (export "test")
+     (memory.init 0 (i32.const 1234) (i32.const 1) (i32.const 1))))
+(assert_trap (invoke "test") "out of bounds")
+
+(assert_invalid
+  (module
+    (func (export "test")
+      (memory.init 1 (i32.const 1234) (i32.const 1) (i32.const 1))))
+  "unknown memory 0")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 1 (i32.const 1234) (i32.const 1) (i32.const 1))))
+  "unknown data segment 1")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 1) (i32.const 0) (i32.const 1))
+    (memory.init 0 (i32.const 1) (i32.const 0) (i32.const 1))))
+(invoke "test")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 1234) (i32.const 0) (i32.const 5))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 1234) (i32.const 2) (i32.const 3))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 0xFFFE) (i32.const 1) (i32.const 3))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 1234) (i32.const 4) (i32.const 0))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 1234) (i32.const 1) (i32.const 0))))
+(invoke "test")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 0x10001) (i32.const 0) (i32.const 0))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 0x10000) (i32.const 0) (i32.const 0))))
+(invoke "test")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 0x10000) (i32.const 1) (i32.const 0))))
+(invoke "test")
+
+(module
+  (memory 1)
+    (data "\37")
+  (func (export "test")
+    (memory.init 0 (i32.const 0x10001) (i32.const 4) (i32.const 0))))
+(assert_trap (invoke "test") "out of bounds")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (i32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (i32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (i32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (f32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (f32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (f32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (f32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (i64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (i64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (i64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (i64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (f64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (f64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (f64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i32.const 1) (f64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (i32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (i32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (i32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (i32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (f32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (f32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (f32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (f32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (i64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (i64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (i64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (i64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (f64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (f64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (f64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f32.const 1) (f64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (i32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (i32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (i32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (i32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (f32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (f32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (f32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (f32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (i64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (i64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (i64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (i64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (f64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (f64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (f64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (i64.const 1) (f64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (i32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (i32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (i32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (i32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (f32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (f32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (f32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (f32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (i64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (i64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (i64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (i64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (f64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (f64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (f64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (memory 1)
+    (data "\37")
+    (func (export "test")
+      (memory.init 0 (f64.const 1) (f64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(module
+  (memory 1 1 )
+  (data "\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42")
+
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $len i32)
+    (memory.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 65528) (i32.const 16))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
+(module
+  (memory 1 1 )
+  (data "\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42")
+
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $len i32)
+    (memory.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 65527) (i32.const 16))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
+(module
+  (memory 1 1 )
+  (data "\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42")
+
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $len i32)
+    (memory.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 65472) (i32.const 30))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
+(module
+  (memory 1 1 )
+  (data "\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42")
+
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $len i32)
+    (memory.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 65473) (i32.const 31))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
+(module
+  (memory 1  )
+  (data "\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42")
+
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $len i32)
+    (memory.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 65528) (i32.const 4294967040))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
+(module
+  (memory 1  )
+  (data "\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42\42")
+
+  (func (export "checkRange") (param $from i32) (param $to i32) (param $expected i32) (result i32)
+    (loop $cont
+      (if (i32.eq (local.get $from) (local.get $to))
+        (then
+          (return (i32.const -1))))
+      (if (i32.eq (i32.load8_u (local.get $from)) (local.get $expected))
+        (then
+          (local.set $from (i32.add (local.get $from) (i32.const 1)))
+          (br $cont))))
+    (return (local.get $from)))
+
+  (func (export "run") (param $offs i32) (param $len i32)
+    (memory.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 0) (i32.const 4294967292))
+              "out of bounds")
+
+(assert_return (invoke "checkRange" (i32.const 0) (i32.const 1) (i32.const 0))
+               (i32.const -1))
diff --git a/tests/wast/reference-types/ref_func.wast b/tests/wast/reference-types/ref_func.wast
new file mode 100644
index 00000000..436b3866
--- /dev/null
+++ b/tests/wast/reference-types/ref_func.wast
@@ -0,0 +1,84 @@
+(module
+  (func (export "f") (param $x i32) (result i32) (local.get $x))
+)
+(register "M")
+
+(module
+  (func $f (import "M" "f") (param i32) (result i32))
+  (func $g (param $x i32) (result i32)
+    (i32.add (local.get $x) (i32.const 1))
+  )
+
+  (global funcref (ref.func $f))
+  (global funcref (ref.func $g))
+  (global $v (mut funcref) (ref.func $f))
+
+  (global funcref (ref.func $gf1))
+  (global funcref (ref.func $gf2))
+  (func (drop (ref.func $ff1)) (drop (ref.func $ff2)))
+  (elem declare func $gf1 $ff1)
+  (elem declare funcref (ref.func $gf2) (ref.func $ff2))
+  (func $gf1)
+  (func $gf2)
+  (func $ff1)
+  (func $ff2)
+
+  (func (export "is_null-f") (result i32)
+    (ref.is_null func (ref.func $f))
+  )
+  (func (export "is_null-g") (result i32)
+    (ref.is_null func (ref.func $g))
+  )
+  (func (export "is_null-v") (result i32)
+    (ref.is_null func (global.get $v))
+  )
+
+  (func (export "set-f") (global.set $v (ref.func $f)))
+  (func (export "set-g") (global.set $v (ref.func $g)))
+
+  (table $t 1 funcref)
+  (elem declare func $f $g)
+
+  (func (export "call-f") (param $x i32) (result i32)
+    (table.set $t (i32.const 0) (ref.func $f))
+    (call_indirect $t (param i32) (result i32) (local.get $x) (i32.const 0))
+  )
+  (func (export "call-g") (param $x i32) (result i32)
+    (table.set $t (i32.const 0) (ref.func $g))
+    (call_indirect $t (param i32) (result i32) (local.get $x) (i32.const 0))
+  )
+  (func (export "call-v") (param $x i32) (result i32)
+    (table.set $t (i32.const 0) (global.get $v))
+    (call_indirect $t (param i32) (result i32) (local.get $x) (i32.const 0))
+  )
+)
+
+(assert_return (invoke "is_null-f") (i32.const 0))
+(assert_return (invoke "is_null-g") (i32.const 0))
+(assert_return (invoke "is_null-v") (i32.const 0))
+
+(assert_return (invoke "call-f" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "call-g" (i32.const 4)) (i32.const 5))
+(assert_return (invoke "call-v" (i32.const 4)) (i32.const 4))
+(invoke "set-g")
+(assert_return (invoke "call-v" (i32.const 4)) (i32.const 5))
+(invoke "set-f")
+(assert_return (invoke "call-v" (i32.const 4)) (i32.const 4))
+
+(assert_invalid
+  (module
+    (func $f (import "M" "f") (param i32) (result i32))
+    (func $g (import "M" "g") (param i32) (result i32))
+    (global funcref (ref.func 7))
+  )
+  "unknown function 7"
+)
+
+(assert_invalid
+  (module (func $f) (global funcref (ref.func $f)))
+  "undeclared function reference"
+)
+(assert_invalid
+  (module (func $f (drop (ref.func $f))))
+  "undeclared function reference"
+)
diff --git a/tests/wast/reference-types/ref_is_null.wast b/tests/wast/reference-types/ref_is_null.wast
new file mode 100644
index 00000000..7c01bb54
--- /dev/null
+++ b/tests/wast/reference-types/ref_is_null.wast
@@ -0,0 +1,49 @@
+(module
+  (func $f1 (export "funcref") (param $x funcref) (result i32)
+    (ref.is_null func (local.get $x))
+  )
+  (func $f2 (export "externref") (param $x externref) (result i32)
+    (ref.is_null extern (local.get $x))
+  )
+
+  (table $t1 2 funcref)
+  (table $t2 2 externref)
+  (elem (table $t1) (i32.const 1) func $dummy)
+  (func $dummy)
+
+  (func (export "init") (param $r externref)
+    (table.set $t2 (i32.const 1) (local.get $r))
+  )
+  (func (export "deinit")
+    (table.set $t1 (i32.const 1) (ref.null func))
+    (table.set $t2 (i32.const 1) (ref.null extern))
+  )
+
+  (func (export "funcref-elem") (param $x i32) (result i32)
+    (call $f1 (table.get $t1 (local.get $x)))
+  )
+  (func (export "externref-elem") (param $x i32) (result i32)
+    (call $f2 (table.get $t2 (local.get $x)))
+  )
+)
+
+(assert_return (invoke "funcref" (ref.null func)) (i32.const 1))
+(assert_return (invoke "externref" (ref.null extern)) (i32.const 1))
+
+(assert_return (invoke "externref" (ref.extern 1)) (i32.const 0))
+
+(invoke "init" (ref.extern 0))
+
+(assert_return (invoke "funcref-elem" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "externref-elem" (i32.const 0)) (i32.const 1))
+
+(assert_return (invoke "funcref-elem" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "externref-elem" (i32.const 1)) (i32.const 0))
+
+(invoke "deinit")
+
+(assert_return (invoke "funcref-elem" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "externref-elem" (i32.const 0)) (i32.const 1))
+
+(assert_return (invoke "funcref-elem" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "externref-elem" (i32.const 1)) (i32.const 1))
diff --git a/tests/wast/reference-types/ref_null.wast b/tests/wast/reference-types/ref_null.wast
new file mode 100644
index 00000000..b88b0888
--- /dev/null
+++ b/tests/wast/reference-types/ref_null.wast
@@ -0,0 +1,10 @@
+(module
+  (func (export "externref") (result externref) (ref.null extern))
+  (func (export "funcref") (result funcref) (ref.null func))
+
+  (global externref (ref.null extern))
+  (global funcref (ref.null func))
+)
+
+(assert_return (invoke "externref") (ref.null extern))
+(assert_return (invoke "funcref") (ref.null func))
diff --git a/tests/wast/reference-types/select.wast b/tests/wast/reference-types/select.wast
new file mode 100644
index 00000000..61edfd9e
--- /dev/null
+++ b/tests/wast/reference-types/select.wast
@@ -0,0 +1,492 @@
+(module
+  ;; Auxiliary
+  (func $dummy)
+  (table $tab funcref (elem $dummy))
+  (memory 1)
+
+  (func (export "select-i32") (param i32 i32 i32) (result i32)
+    (select (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "select-i64") (param i64 i64 i32) (result i64)
+    (select (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "select-f32") (param f32 f32 i32) (result f32)
+    (select (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "select-f64") (param f64 f64 i32) (result f64)
+    (select (local.get 0) (local.get 1) (local.get 2))
+  )
+
+  (func (export "select-i32-t") (param i32 i32 i32) (result i32)
+    (select (result i32) (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "select-i64-t") (param i64 i64 i32) (result i64)
+    (select (result i64) (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "select-f32-t") (param f32 f32 i32) (result f32)
+    (select (result f32) (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "select-f64-t") (param f64 f64 i32) (result f64)
+    (select (result f64) (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "select-funcref") (param funcref funcref i32) (result funcref)
+    (select (result funcref) (local.get 0) (local.get 1) (local.get 2))
+  )
+  (func (export "select-externref") (param externref externref i32) (result externref)
+    (select (result externref) (local.get 0) (local.get 1) (local.get 2))
+  )
+
+  ;; Check that both sides of the select are evaluated
+  (func (export "select-trap-left") (param $cond i32) (result i32)
+    (select (unreachable) (i32.const 0) (local.get $cond))
+  )
+  (func (export "select-trap-right") (param $cond i32) (result i32)
+    (select (i32.const 0) (unreachable) (local.get $cond))
+  )
+
+  (func (export "select-unreached")
+    (unreachable) (select)
+    (unreachable) (i32.const 0) (select)
+    (unreachable) (i32.const 0) (i32.const 0) (select)
+    (unreachable) (f32.const 0) (i32.const 0) (select)
+    (unreachable)
+  )
+
+
+  ;; As the argument of control constructs and instructions
+
+  (func (export "as-select-first") (param i32) (result i32)
+    (select (select (i32.const 0) (i32.const 1) (local.get 0)) (i32.const 2) (i32.const 3))
+  )
+  (func (export "as-select-mid") (param i32) (result i32)
+    (select (i32.const 2) (select (i32.const 0) (i32.const 1) (local.get 0)) (i32.const 3))
+  )
+  (func (export "as-select-last") (param i32) (result i32)
+    (select (i32.const 2) (i32.const 3) (select (i32.const 0) (i32.const 1) (local.get 0)))
+  )
+
+  (func (export "as-loop-first") (param i32) (result i32)
+    (loop (result i32) (select (i32.const 2) (i32.const 3) (local.get 0)) (call $dummy) (call $dummy))
+  )
+  (func (export "as-loop-mid") (param i32) (result i32)
+    (loop (result i32) (call $dummy) (select (i32.const 2) (i32.const 3) (local.get 0)) (call $dummy))
+  )
+  (func (export "as-loop-last") (param i32) (result i32)
+    (loop (result i32) (call $dummy) (call $dummy) (select (i32.const 2) (i32.const 3) (local.get 0)))
+  )
+
+  (func (export "as-if-condition") (param i32)
+    (select (i32.const 2) (i32.const 3) (local.get 0)) (if (then (call $dummy)))
+  )
+  (func (export "as-if-then") (param i32) (result i32)
+    (if (result i32) (i32.const 1) (then (select (i32.const 2) (i32.const 3) (local.get 0))) (else (i32.const 4)))
+  )
+  (func (export "as-if-else") (param i32) (result i32)
+    (if (result i32) (i32.const 0) (then (i32.const 2)) (else (select (i32.const 2) (i32.const 3) (local.get 0))))
+  )
+
+  (func (export "as-br_if-first") (param i32) (result i32)
+    (block (result i32) (br_if 0 (select (i32.const 2) (i32.const 3) (local.get 0)) (i32.const 4)))
+  )
+  (func (export "as-br_if-last") (param i32) (result i32)
+    (block (result i32) (br_if 0 (i32.const 2) (select (i32.const 2) (i32.const 3) (local.get 0))))
+  )
+
+  (func (export "as-br_table-first") (param i32) (result i32)
+    (block (result i32) (select (i32.const 2) (i32.const 3) (local.get 0)) (i32.const 2) (br_table 0 0))
+  )
+  (func (export "as-br_table-last") (param i32) (result i32)
+    (block (result i32) (i32.const 2) (select (i32.const 2) (i32.const 3) (local.get 0)) (br_table 0 0))
+  )
+
+  (func $func (param i32 i32) (result i32) (local.get 0))
+  (type $check (func (param i32 i32) (result i32)))
+  (table $t funcref (elem $func))
+  (func (export "as-call_indirect-first") (param i32) (result i32)
+    (block (result i32)
+      (call_indirect $t (type $check)
+        (select (i32.const 2) (i32.const 3) (local.get 0)) (i32.const 1) (i32.const 0)
+      )
+    )
+  )
+  (func (export "as-call_indirect-mid") (param i32) (result i32)
+    (block (result i32)
+      (call_indirect $t (type $check)
+        (i32.const 1) (select (i32.const 2) (i32.const 3) (local.get 0)) (i32.const 0)
+      )
+    )
+  )
+  (func (export "as-call_indirect-last") (param i32) (result i32)
+    (block (result i32)
+      (call_indirect $t (type $check)
+        (i32.const 1) (i32.const 4) (select (i32.const 2) (i32.const 3) (local.get 0))
+      )
+    )
+  )
+
+  (func (export "as-store-first") (param i32)
+    (select (i32.const 0) (i32.const 4) (local.get 0)) (i32.const 1) (i32.store)
+  )
+  (func (export "as-store-last") (param i32)
+    (i32.const 8) (select (i32.const 1) (i32.const 2) (local.get 0)) (i32.store)
+  )
+
+  (func (export "as-memory.grow-value") (param i32) (result i32)
+    (memory.grow (select (i32.const 1) (i32.const 2) (local.get 0)))
+  )
+
+  (func $f (param i32) (result i32) (local.get 0))
+
+  (func (export "as-call-value") (param i32) (result i32)
+    (call $f (select (i32.const 1) (i32.const 2) (local.get 0)))
+  )
+  (func (export "as-return-value") (param i32) (result i32)
+    (select (i32.const 1) (i32.const 2) (local.get 0)) (return)
+  )
+  (func (export "as-drop-operand") (param i32)
+    (drop (select (i32.const 1) (i32.const 2) (local.get 0)))
+  )
+  (func (export "as-br-value") (param i32) (result i32)
+    (block (result i32) (br 0 (select (i32.const 1) (i32.const 2) (local.get 0))))
+  )
+  (func (export "as-local.set-value") (param i32) (result i32)
+    (local i32) (local.set 0 (select (i32.const 1) (i32.const 2) (local.get 0))) (local.get 0)
+  )
+  (func (export "as-local.tee-value") (param i32) (result i32)
+    (local.tee 0 (select (i32.const 1) (i32.const 2) (local.get 0)))
+  )
+  (global $a (mut i32) (i32.const 10))
+  (func (export "as-global.set-value") (param i32) (result i32)
+    (global.set $a (select (i32.const 1) (i32.const 2) (local.get 0)))
+    (global.get $a)
+  )
+  (func (export "as-load-operand") (param i32) (result i32)
+    (i32.load (select (i32.const 0) (i32.const 4) (local.get 0)))
+  )
+
+  (func (export "as-unary-operand") (param i32) (result i32)
+    (i32.eqz (select (i32.const 0) (i32.const 1) (local.get 0)))
+  )
+  (func (export "as-binary-operand") (param i32) (result i32)
+    (i32.mul
+      (select (i32.const 1) (i32.const 2) (local.get 0))
+      (select (i32.const 1) (i32.const 2) (local.get 0))
+    )
+  )
+  (func (export "as-test-operand") (param i32) (result i32)
+    (block (result i32)
+      (i32.eqz (select (i32.const 0) (i32.const 1) (local.get 0)))
+    )
+  )
+
+  (func (export "as-compare-left") (param i32) (result i32)
+    (block (result i32)
+      (i32.le_s (select (i32.const 1) (i32.const 2) (local.get 0)) (i32.const 1))
+    )
+  )
+  (func (export "as-compare-right") (param i32) (result i32)
+    (block (result i32)
+      (i32.ne (i32.const 1) (select (i32.const 0) (i32.const 1) (local.get 0)))
+    )
+  )
+
+  (func (export "as-convert-operand") (param i32) (result i32)
+    (block (result i32)
+      (i32.wrap_i64 (select (i64.const 1) (i64.const 0) (local.get 0)))
+    )
+  )
+)
+
+(assert_return (invoke "select-i32" (i32.const 1) (i32.const 2) (i32.const 1)) (i32.const 1))
+(assert_return (invoke "select-i64" (i64.const 2) (i64.const 1) (i32.const 1)) (i64.const 2))
+(assert_return (invoke "select-f32" (f32.const 1) (f32.const 2) (i32.const 1)) (f32.const 1))
+(assert_return (invoke "select-f64" (f64.const 1) (f64.const 2) (i32.const 1)) (f64.const 1))
+
+(assert_return (invoke "select-i32" (i32.const 1) (i32.const 2) (i32.const 0)) (i32.const 2))
+(assert_return (invoke "select-i32" (i32.const 2) (i32.const 1) (i32.const 0)) (i32.const 1))
+(assert_return (invoke "select-i64" (i64.const 2) (i64.const 1) (i32.const -1)) (i64.const 2))
+(assert_return (invoke "select-i64" (i64.const 2) (i64.const 1) (i32.const 0xf0f0f0f0)) (i64.const 2))
+
+(assert_return (invoke "select-f32" (f32.const nan) (f32.const 1) (i32.const 1)) (f32.const nan))
+(assert_return (invoke "select-f32" (f32.const nan:0x20304) (f32.const 1) (i32.const 1)) (f32.const nan:0x20304))
+(assert_return (invoke "select-f32" (f32.const nan) (f32.const 1) (i32.const 0)) (f32.const 1))
+(assert_return (invoke "select-f32" (f32.const nan:0x20304) (f32.const 1) (i32.const 0)) (f32.const 1))
+(assert_return (invoke "select-f32" (f32.const 2) (f32.const nan) (i32.const 1)) (f32.const 2))
+(assert_return (invoke "select-f32" (f32.const 2) (f32.const nan:0x20304) (i32.const 1)) (f32.const 2))
+(assert_return (invoke "select-f32" (f32.const 2) (f32.const nan) (i32.const 0)) (f32.const nan))
+(assert_return (invoke "select-f32" (f32.const 2) (f32.const nan:0x20304) (i32.const 0)) (f32.const nan:0x20304))
+
+(assert_return (invoke "select-f64" (f64.const nan) (f64.const 1) (i32.const 1)) (f64.const nan))
+(assert_return (invoke "select-f64" (f64.const nan:0x20304) (f64.const 1) (i32.const 1)) (f64.const nan:0x20304))
+(assert_return (invoke "select-f64" (f64.const nan) (f64.const 1) (i32.const 0)) (f64.const 1))
+(assert_return (invoke "select-f64" (f64.const nan:0x20304) (f64.const 1) (i32.const 0)) (f64.const 1))
+(assert_return (invoke "select-f64" (f64.const 2) (f64.const nan) (i32.const 1)) (f64.const 2))
+(assert_return (invoke "select-f64" (f64.const 2) (f64.const nan:0x20304) (i32.const 1)) (f64.const 2))
+(assert_return (invoke "select-f64" (f64.const 2) (f64.const nan) (i32.const 0)) (f64.const nan))
+(assert_return (invoke "select-f64" (f64.const 2) (f64.const nan:0x20304) (i32.const 0)) (f64.const nan:0x20304))
+
+(assert_return (invoke "select-i32-t" (i32.const 1) (i32.const 2) (i32.const 1)) (i32.const 1))
+(assert_return (invoke "select-i64-t" (i64.const 2) (i64.const 1) (i32.const 1)) (i64.const 2))
+(assert_return (invoke "select-f32-t" (f32.const 1) (f32.const 2) (i32.const 1)) (f32.const 1))
+(assert_return (invoke "select-f64-t" (f64.const 1) (f64.const 2) (i32.const 1)) (f64.const 1))
+(assert_return (invoke "select-funcref" (ref.null func) (ref.null func) (i32.const 1)) (ref.null func))
+(assert_return (invoke "select-externref" (ref.extern 1) (ref.extern 2) (i32.const 1)) (ref.extern 1))
+
+(assert_return (invoke "select-i32-t" (i32.const 1) (i32.const 2) (i32.const 0)) (i32.const 2))
+(assert_return (invoke "select-i32-t" (i32.const 2) (i32.const 1) (i32.const 0)) (i32.const 1))
+(assert_return (invoke "select-i64-t" (i64.const 2) (i64.const 1) (i32.const -1)) (i64.const 2))
+(assert_return (invoke "select-i64-t" (i64.const 2) (i64.const 1) (i32.const 0xf0f0f0f0)) (i64.const 2))
+(assert_return (invoke "select-externref" (ref.extern 1) (ref.extern 2) (i32.const 0)) (ref.extern 2))
+(assert_return (invoke "select-externref" (ref.extern 2) (ref.extern 1) (i32.const 0)) (ref.extern 1))
+
+(assert_return (invoke "select-f32-t" (f32.const nan) (f32.const 1) (i32.const 1)) (f32.const nan))
+(assert_return (invoke "select-f32-t" (f32.const nan:0x20304) (f32.const 1) (i32.const 1)) (f32.const nan:0x20304))
+(assert_return (invoke "select-f32-t" (f32.const nan) (f32.const 1) (i32.const 0)) (f32.const 1))
+(assert_return (invoke "select-f32-t" (f32.const nan:0x20304) (f32.const 1) (i32.const 0)) (f32.const 1))
+(assert_return (invoke "select-f32-t" (f32.const 2) (f32.const nan) (i32.const 1)) (f32.const 2))
+(assert_return (invoke "select-f32-t" (f32.const 2) (f32.const nan:0x20304) (i32.const 1)) (f32.const 2))
+(assert_return (invoke "select-f32-t" (f32.const 2) (f32.const nan) (i32.const 0)) (f32.const nan))
+(assert_return (invoke "select-f32-t" (f32.const 2) (f32.const nan:0x20304) (i32.const 0)) (f32.const nan:0x20304))
+
+(assert_return (invoke "select-f64-t" (f64.const nan) (f64.const 1) (i32.const 1)) (f64.const nan))
+(assert_return (invoke "select-f64-t" (f64.const nan:0x20304) (f64.const 1) (i32.const 1)) (f64.const nan:0x20304))
+(assert_return (invoke "select-f64-t" (f64.const nan) (f64.const 1) (i32.const 0)) (f64.const 1))
+(assert_return (invoke "select-f64-t" (f64.const nan:0x20304) (f64.const 1) (i32.const 0)) (f64.const 1))
+(assert_return (invoke "select-f64-t" (f64.const 2) (f64.const nan) (i32.const 1)) (f64.const 2))
+(assert_return (invoke "select-f64-t" (f64.const 2) (f64.const nan:0x20304) (i32.const 1)) (f64.const 2))
+(assert_return (invoke "select-f64-t" (f64.const 2) (f64.const nan) (i32.const 0)) (f64.const nan))
+(assert_return (invoke "select-f64-t" (f64.const 2) (f64.const nan:0x20304) (i32.const 0)) (f64.const nan:0x20304))
+
+(assert_trap (invoke "select-trap-left" (i32.const 1)) "unreachable")
+(assert_trap (invoke "select-trap-left" (i32.const 0)) "unreachable")
+(assert_trap (invoke "select-trap-right" (i32.const 1)) "unreachable")
+(assert_trap (invoke "select-trap-right" (i32.const 0)) "unreachable")
+
+(assert_return (invoke "as-select-first" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "as-select-first" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "as-select-mid" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-select-mid" (i32.const 1)) (i32.const 2))
+(assert_return (invoke "as-select-last" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-select-last" (i32.const 1)) (i32.const 3))
+
+(assert_return (invoke "as-loop-first" (i32.const 0)) (i32.const 3))
+(assert_return (invoke "as-loop-first" (i32.const 1)) (i32.const 2))
+(assert_return (invoke "as-loop-mid" (i32.const 0)) (i32.const 3))
+(assert_return (invoke "as-loop-mid" (i32.const 1)) (i32.const 2))
+(assert_return (invoke "as-loop-last" (i32.const 0)) (i32.const 3))
+(assert_return (invoke "as-loop-last" (i32.const 1)) (i32.const 2))
+
+(assert_return (invoke "as-if-condition" (i32.const 0)))
+(assert_return (invoke "as-if-condition" (i32.const 1)))
+(assert_return (invoke "as-if-then" (i32.const 0)) (i32.const 3))
+(assert_return (invoke "as-if-then" (i32.const 1)) (i32.const 2))
+(assert_return (invoke "as-if-else" (i32.const 0)) (i32.const 3))
+(assert_return (invoke "as-if-else" (i32.const 1)) (i32.const 2))
+
+(assert_return (invoke "as-br_if-first" (i32.const 0)) (i32.const 3))
+(assert_return (invoke "as-br_if-first" (i32.const 1)) (i32.const 2))
+(assert_return (invoke "as-br_if-last" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-br_if-last" (i32.const 1)) (i32.const 2))
+
+(assert_return (invoke "as-br_table-first" (i32.const 0)) (i32.const 3))
+(assert_return (invoke "as-br_table-first" (i32.const 1)) (i32.const 2))
+(assert_return (invoke "as-br_table-last" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-br_table-last" (i32.const 1)) (i32.const 2))
+
+(assert_return (invoke "as-call_indirect-first" (i32.const 0)) (i32.const 3))
+;;(assert_return (invoke "as-call_indirect-first" (i32.const 1)) (i32.const 2))
+(assert_return (invoke "as-call_indirect-mid" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "as-call_indirect-mid" (i32.const 1)) (i32.const 1))
+(assert_trap (invoke "as-call_indirect-last" (i32.const 0)) "undefined element")
+(assert_trap (invoke "as-call_indirect-last" (i32.const 1)) "undefined element")
+
+(assert_return (invoke "as-store-first" (i32.const 0)))
+(assert_return (invoke "as-store-first" (i32.const 1)))
+(assert_return (invoke "as-store-last" (i32.const 0)))
+(assert_return (invoke "as-store-last" (i32.const 1)))
+
+(assert_return (invoke "as-memory.grow-value" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "as-memory.grow-value" (i32.const 1)) (i32.const 3))
+
+(assert_return (invoke "as-call-value" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-call-value" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-return-value" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-return-value" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-drop-operand" (i32.const 0)))
+(assert_return (invoke "as-drop-operand" (i32.const 1)))
+(assert_return (invoke "as-br-value" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-br-value" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-local.set-value" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-local.set-value" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-local.tee-value" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-local.tee-value" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-global.set-value" (i32.const 0)) (i32.const 2))
+(assert_return (invoke "as-global.set-value" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-load-operand" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "as-load-operand" (i32.const 1)) (i32.const 1))
+
+(assert_return (invoke "as-unary-operand" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "as-unary-operand" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-binary-operand" (i32.const 0)) (i32.const 4))
+(assert_return (invoke "as-binary-operand" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-test-operand" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "as-test-operand" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-compare-left" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "as-compare-left" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-compare-right" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "as-compare-right" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "as-convert-operand" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "as-convert-operand" (i32.const 1)) (i32.const 1))
+
+(assert_invalid
+  (module (func $arity-0-implicit (select (nop) (nop) (i32.const 1))))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $arity-0 (select (result) (nop) (nop) (i32.const 1))))
+  "invalid result arity"
+)
+(assert_invalid
+  (module (func $arity-2 (result i32 i32)
+    (select (result i32 i32)
+      (i32.const 0) (i32.const 0)
+      (i32.const 0) (i32.const 0)
+      (i32.const 1)
+    )
+  ))
+  "invalid result arity"
+)
+
+
+(assert_invalid
+  (module (func $type-externref-implicit (param $r externref)
+    (drop (select (local.get $r) (local.get $r) (i32.const 1)))
+  ))
+  "type mismatch"
+)
+
+(assert_invalid
+  (module (func $type-num-vs-num
+    (drop (select (i32.const 1) (i64.const 1) (i32.const 1)))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-num-vs-num
+    (drop (select (i32.const 1) (f32.const 1.0) (i32.const 1)))
+  ))
+  "type mismatch"
+)
+(assert_invalid
+  (module (func $type-num-vs-num
+    (drop (select (i32.const 1) (f64.const 1.0) (i32.const 1)))
+  ))
+  "type mismatch"
+)
+
+
+(assert_invalid
+  (module
+    (func $type-1st-operand-empty
+      (select) (drop)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-2nd-operand-empty
+      (i32.const 0) (select) (drop)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-3rd-operand-empty
+      (i32.const 0) (i32.const 0) (select) (drop)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-1st-operand-empty-in-block
+      (i32.const 0) (i32.const 0) (i32.const 0)
+      (block (select) (drop))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-2nd-operand-empty-in-block
+      (i32.const 0) (i32.const 0)
+      (block (i32.const 0) (select) (drop))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-3rd-operand-empty-in-block
+      (i32.const 0)
+      (block (i32.const 0) (i32.const 0) (select) (drop))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-1st-operand-empty-in-loop
+      (i32.const 0) (i32.const 0) (i32.const 0)
+      (loop (select) (drop))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-2nd-operand-empty-in-loop
+      (i32.const 0) (i32.const 0)
+      (loop (i32.const 0) (select) (drop))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-3rd-operand-empty-in-loop
+      (i32.const 0)
+      (loop (i32.const 0) (i32.const 0) (select) (drop))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-1st-operand-empty-in-then
+      (i32.const 0) (i32.const 0) (i32.const 0)
+      (if (then (select) (drop)))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-2nd-operand-empty-in-then
+      (i32.const 0) (i32.const 0)
+      (if (then (i32.const 0) (select) (drop)))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (func $type-3rd-operand-empty-in-then
+      (i32.const 0)
+      (if (then (i32.const 0) (i32.const 0) (select) (drop)))
+    )
+  )
+  "type mismatch"
+)
diff --git a/tests/wast/reference-types/table-sub.wast b/tests/wast/reference-types/table-sub.wast
new file mode 100644
index 00000000..08787bdd
--- /dev/null
+++ b/tests/wast/reference-types/table-sub.wast
@@ -0,0 +1,21 @@
+(assert_invalid
+  (module
+    (table $t1 10 funcref)
+    (table $t2 10 externref)
+    (func $f
+      (table.copy $t1 $t2 (i32.const 0) (i32.const 1) (i32.const 2))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table $t 10 funcref)
+    (elem $el externref)
+    (func $f
+      (table.init $t $el (i32.const 0) (i32.const 1) (i32.const 2))
+    )
+  )
+  "type mismatch"
+)
diff --git a/tests/wast/reference-types/table.wast b/tests/wast/reference-types/table.wast
new file mode 100644
index 00000000..0bd04f5c
--- /dev/null
+++ b/tests/wast/reference-types/table.wast
@@ -0,0 +1,54 @@
+;; Test table section structure
+
+(module (table 0 funcref))
+(module (table 1 funcref))
+(module (table 0 0 funcref))
+(module (table 0 1 funcref))
+(module (table 1 256 funcref))
+(module (table 0 65536 funcref))
+(module (table 0 0xffff_ffff funcref))
+
+(module (table 0 funcref) (table 0 funcref))
+(module (table (import "spectest" "table") 0 funcref) (table 0 funcref))
+
+(assert_invalid (module (elem (i32.const 0))) "unknown table")
+(assert_invalid (module (elem (i32.const 0) $f) (func $f)) "unknown table")
+
+
+(assert_invalid
+  (module (table 1 0 funcref))
+  "size minimum must not be greater than maximum"
+)
+(assert_invalid
+  (module (table 0xffff_ffff 0 funcref))
+  "size minimum must not be greater than maximum"
+)
+
+(assert_malformed
+  (module quote "(table 0x1_0000_0000 funcref)")
+  "i32 constant out of range"
+)
+(assert_malformed
+  (module quote "(table 0x1_0000_0000 0x1_0000_0000 funcref)")
+  "i32 constant out of range"
+)
+(assert_malformed
+  (module quote "(table 0 0x1_0000_0000 funcref)")
+  "i32 constant out of range"
+)
+
+
+;; Duplicate table identifiers
+
+(assert_malformed (module quote
+  "(table $foo 1 funcref)"
+  "(table $foo 1 funcref)")
+  "duplicate table")
+(assert_malformed (module quote
+  "(import \"\" \"\" (table $foo 1 funcref))"
+  "(table $foo 1 funcref)")
+  "duplicate table")
+(assert_malformed (module quote
+  "(import \"\" \"\" (table $foo 1 funcref))"
+  "(import \"\" \"\" (table $foo 1 funcref))")
+  "duplicate table")
diff --git a/tests/wast/reference-types/table_copy.wast b/tests/wast/reference-types/table_copy.wast
new file mode 100644
index 00000000..9788c3f4
--- /dev/null
+++ b/tests/wast/reference-types/table_copy.wast
@@ -0,0 +1,3082 @@
+;;
+;; Generated by ../meta/generate_table_copy.js
+;; DO NOT EDIT THIS FILE.  CHANGE THE SOURCE AND REGENERATE.
+;;
+
+(module
+  (func (export "ef0") (result i32) (i32.const 0))
+  (func (export "ef1") (result i32) (i32.const 1))
+  (func (export "ef2") (result i32) (i32.const 2))
+  (func (export "ef3") (result i32) (i32.const 3))
+  (func (export "ef4") (result i32) (i32.const 4))
+)
+(register "a")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (nop))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 13) (i32.const 2) (i32.const 3)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 25) (i32.const 15) (i32.const 2)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 25)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 26)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 13) (i32.const 25) (i32.const 3)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_trap (invoke "check_t0" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 15)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 20) (i32.const 22) (i32.const 4)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 25) (i32.const 1) (i32.const 3)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 26)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 27)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 10) (i32.const 12) (i32.const 7)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 10)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 11)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 12) (i32.const 10) (i32.const 7)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 13)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 17)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 18)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t1) (i32.const 3) func 1 3 1 4)
+  (elem (table $t1) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 10) (i32.const 0) (i32.const 20)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 4))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 1))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 22)) (i32.const 7))
+(assert_return (invoke "check_t1" (i32.const 23)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 24)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 25)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 26)) (i32.const 6))
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (nop))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t1 $t1 (i32.const 13) (i32.const 2) (i32.const 3)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t1 $t1 (i32.const 25) (i32.const 15) (i32.const 2)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 25)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 26)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t1 $t1 (i32.const 13) (i32.const 25) (i32.const 3)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_trap (invoke "check_t0" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 15)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t1 $t1 (i32.const 20) (i32.const 22) (i32.const 4)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t1 $t1 (i32.const 25) (i32.const 1) (i32.const 3)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 26)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 27)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t1 $t1 (i32.const 10) (i32.const 12) (i32.const 7)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 10)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 11)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t1 $t1 (i32.const 12) (i32.const 10) (i32.const 7)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 13)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 17)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 18)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 11)) (i32.const 6))
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 7))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (elem (table $t0) (i32.const 3) func 1 3 1 4)
+  (elem (table $t0) (i32.const 11) func 6 3 2 5 7)
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.copy $t0 $t1 (i32.const 10) (i32.const 0) (i32.const 20)))
+  (func (export "check_t0") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+  (func (export "check_t1") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check_t0" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t0" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check_t0" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check_t0" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t0" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check_t0" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check_t0" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check_t0" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check_t0" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check_t0" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t0" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 2)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 4)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 5)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 6)) (i32.const 4))
+(assert_trap (invoke "check_t1" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 12)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 13)) (i32.const 1))
+(assert_return (invoke "check_t1" (i32.const 14)) (i32.const 4))
+(assert_return (invoke "check_t1" (i32.const 15)) (i32.const 1))
+(assert_trap (invoke "check_t1" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 21)) "uninitialized element")
+(assert_return (invoke "check_t1" (i32.const 22)) (i32.const 7))
+(assert_return (invoke "check_t1" (i32.const 23)) (i32.const 5))
+(assert_return (invoke "check_t1" (i32.const 24)) (i32.const 2))
+(assert_return (invoke "check_t1" (i32.const 25)) (i32.const 3))
+(assert_return (invoke "check_t1" (i32.const 26)) (i32.const 6))
+(assert_trap (invoke "check_t1" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check_t1" (i32.const 29)) "uninitialized element")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 28) (i32.const 1) (i32.const 3))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 0xFFFFFFFE) (i32.const 1) (i32.const 2))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 15) (i32.const 25) (i32.const 6))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 15) (i32.const 0xFFFFFFFE) (i32.const 2))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 15) (i32.const 25) (i32.const 0))
+    ))
+
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 30) (i32.const 15) (i32.const 0))
+    ))
+
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 31) (i32.const 15) (i32.const 0))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 15) (i32.const 30) (i32.const 0))
+    ))
+
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 15) (i32.const 31) (i32.const 0))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 30) (i32.const 30) (i32.const 0))
+    ))
+
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t0 $t0 (i32.const 31) (i32.const 31) (i32.const 0))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 28) (i32.const 1) (i32.const 3))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 0xFFFFFFFE) (i32.const 1) (i32.const 2))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 15) (i32.const 25) (i32.const 6))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 15) (i32.const 0xFFFFFFFE) (i32.const 2))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 15) (i32.const 25) (i32.const 0))
+    ))
+
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 30) (i32.const 15) (i32.const 0))
+    ))
+
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 31) (i32.const 15) (i32.const 0))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 15) (i32.const 30) (i32.const 0))
+    ))
+
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 15) (i32.const 31) (i32.const 0))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 30) (i32.const 30) (i32.const 0))
+    ))
+
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.copy $t1 $t0 (i32.const 31) (i32.const 31) (i32.const 0))
+    ))
+
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 0)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 24) (i32.const 0) (i32.const 16))
+             "out of bounds")
+(assert_return (invoke "test" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 2)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 3)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 5)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 6)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 7)) (i32.const 7))
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 0)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7 $f8)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 23) (i32.const 0) (i32.const 15))
+             "out of bounds")
+(assert_return (invoke "test" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 2)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 3)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 5)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 6)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 7)) (i32.const 7))
+(assert_return (invoke "test" (i32.const 8)) (i32.const 8))
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 24)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 0) (i32.const 24) (i32.const 16))
+             "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_return (invoke "test" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 25)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 26)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 27)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 28)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 29)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 30)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 31)) (i32.const 7))
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 23)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7 $f8)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 0) (i32.const 23) (i32.const 15))
+             "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_return (invoke "test" (i32.const 23)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 24)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 25)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 26)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 27)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 28)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 29)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 30)) (i32.const 7))
+(assert_return (invoke "test" (i32.const 31)) (i32.const 8))
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 11)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 24) (i32.const 11) (i32.const 16))
+             "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_return (invoke "test" (i32.const 11)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 12)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 13)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 14)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 15)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 16)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 17)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 18)) (i32.const 7))
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 24)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 11) (i32.const 24) (i32.const 16))
+             "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_return (invoke "test" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 25)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 26)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 27)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 28)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 29)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 30)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 31)) (i32.const 7))
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 21)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 24) (i32.const 21) (i32.const 16))
+             "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_return (invoke "test" (i32.const 21)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 22)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 23)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 24)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 25)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 26)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 27)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 28)) (i32.const 7))
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 24)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 21) (i32.const 24) (i32.const 16))
+             "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_return (invoke "test" (i32.const 24)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 25)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 26)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 27)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 28)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 29)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 30)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 31)) (i32.const 7))
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem (i32.const 21)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7 $f8 $f9 $f10)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 21) (i32.const 21) (i32.const 16))
+             "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
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+(assert_return (invoke "test" (i32.const 21)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 22)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 23)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 24)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 25)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 26)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 27)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 28)) (i32.const 7))
+(assert_return (invoke "test" (i32.const 29)) (i32.const 8))
+(assert_return (invoke "test" (i32.const 30)) (i32.const 9))
+(assert_return (invoke "test" (i32.const 31)) (i32.const 10))
+
+(module
+  (type (func (result i32)))
+  (table 128 128 funcref)
+  (elem (i32.const 112)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7 $f8 $f9 $f10 $f11 $f12 $f13 $f14 $f15)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 0) (i32.const 112) (i32.const 4294967264))
+             "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 32)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 33)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 34)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 75)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 76)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 77)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 78)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 79)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 80)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 81)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 82)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 83)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 84)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 85)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 86)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 87)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 88)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 89)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 90)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 91)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 92)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 93)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 94)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 95)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 96)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 97)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 98)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 99)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 100)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 101)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 102)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 103)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 104)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 105)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 106)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 107)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 108)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 109)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 110)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 111)) "uninitialized element")
+(assert_return (invoke "test" (i32.const 112)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 113)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 114)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 115)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 116)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 117)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 118)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 119)) (i32.const 7))
+(assert_return (invoke "test" (i32.const 120)) (i32.const 8))
+(assert_return (invoke "test" (i32.const 121)) (i32.const 9))
+(assert_return (invoke "test" (i32.const 122)) (i32.const 10))
+(assert_return (invoke "test" (i32.const 123)) (i32.const 11))
+(assert_return (invoke "test" (i32.const 124)) (i32.const 12))
+(assert_return (invoke "test" (i32.const 125)) (i32.const 13))
+(assert_return (invoke "test" (i32.const 126)) (i32.const 14))
+(assert_return (invoke "test" (i32.const 127)) (i32.const 15))
+
+(module
+  (type (func (result i32)))
+  (table 128 128 funcref)
+  (elem (i32.const 0)
+         $f0 $f1 $f2 $f3 $f4 $f5 $f6 $f7 $f8 $f9 $f10 $f11 $f12 $f13 $f14 $f15)
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $targetOffs i32) (param $srcOffs i32) (param $len i32)
+    (table.copy (local.get $targetOffs) (local.get $srcOffs) (local.get $len))))
+
+(assert_trap (invoke "run" (i32.const 112) (i32.const 0) (i32.const 4294967264))
+             "out of bounds")
+(assert_return (invoke "test" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "test" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "test" (i32.const 2)) (i32.const 2))
+(assert_return (invoke "test" (i32.const 3)) (i32.const 3))
+(assert_return (invoke "test" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "test" (i32.const 5)) (i32.const 5))
+(assert_return (invoke "test" (i32.const 6)) (i32.const 6))
+(assert_return (invoke "test" (i32.const 7)) (i32.const 7))
+(assert_return (invoke "test" (i32.const 8)) (i32.const 8))
+(assert_return (invoke "test" (i32.const 9)) (i32.const 9))
+(assert_return (invoke "test" (i32.const 10)) (i32.const 10))
+(assert_return (invoke "test" (i32.const 11)) (i32.const 11))
+(assert_return (invoke "test" (i32.const 12)) (i32.const 12))
+(assert_return (invoke "test" (i32.const 13)) (i32.const 13))
+(assert_return (invoke "test" (i32.const 14)) (i32.const 14))
+(assert_return (invoke "test" (i32.const 15)) (i32.const 15))
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 32)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 33)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 34)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 35)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 36)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 37)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 38)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 39)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 40)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 41)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 42)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 43)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 44)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 45)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 46)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 47)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 48)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 49)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 50)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 51)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 52)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 53)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 54)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 55)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 56)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 57)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 58)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 59)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 60)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 61)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 62)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 63)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 64)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 65)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 66)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 67)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 68)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 69)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 70)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 71)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 72)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 73)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 74)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 75)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 76)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 77)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 78)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 79)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 80)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 81)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 82)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 83)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 84)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 85)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 86)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 87)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 88)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 89)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 90)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 91)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 92)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 93)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 94)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 95)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 96)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 97)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 98)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 99)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 100)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 101)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 102)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 103)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 104)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 105)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 106)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 107)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 108)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 109)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 110)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 111)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 112)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 113)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 114)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 115)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 116)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 117)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 118)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 119)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 120)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 121)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 122)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 123)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 124)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 125)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 126)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 127)) "uninitialized element")
diff --git a/tests/wast/reference-types/table_fill.wast b/tests/wast/reference-types/table_fill.wast
new file mode 100644
index 00000000..29c556db
--- /dev/null
+++ b/tests/wast/reference-types/table_fill.wast
@@ -0,0 +1,153 @@
+(module
+  (table $t 10 externref)
+
+  (func (export "fill") (param $i i32) (param $r externref) (param $n i32)
+    (table.fill $t (local.get $i) (local.get $r) (local.get $n))
+  )
+
+  (func (export "get") (param $i i32) (result externref)
+    (table.get $t (local.get $i))
+  )
+)
+
+(assert_return (invoke "get" (i32.const 1)) (ref.null extern))
+(assert_return (invoke "get" (i32.const 2)) (ref.null extern))
+(assert_return (invoke "get" (i32.const 3)) (ref.null extern))
+(assert_return (invoke "get" (i32.const 4)) (ref.null extern))
+(assert_return (invoke "get" (i32.const 5)) (ref.null extern))
+
+(assert_return (invoke "fill" (i32.const 2) (ref.extern 1) (i32.const 3)))
+(assert_return (invoke "get" (i32.const 1)) (ref.null extern))
+(assert_return (invoke "get" (i32.const 2)) (ref.extern 1))
+(assert_return (invoke "get" (i32.const 3)) (ref.extern 1))
+(assert_return (invoke "get" (i32.const 4)) (ref.extern 1))
+(assert_return (invoke "get" (i32.const 5)) (ref.null extern))
+
+(assert_return (invoke "fill" (i32.const 4) (ref.extern 2) (i32.const 2)))
+(assert_return (invoke "get" (i32.const 3)) (ref.extern 1))
+(assert_return (invoke "get" (i32.const 4)) (ref.extern 2))
+(assert_return (invoke "get" (i32.const 5)) (ref.extern 2))
+(assert_return (invoke "get" (i32.const 6)) (ref.null extern))
+
+(assert_return (invoke "fill" (i32.const 4) (ref.extern 3) (i32.const 0)))
+(assert_return (invoke "get" (i32.const 3)) (ref.extern 1))
+(assert_return (invoke "get" (i32.const 4)) (ref.extern 2))
+(assert_return (invoke "get" (i32.const 5)) (ref.extern 2))
+
+(assert_return (invoke "fill" (i32.const 8) (ref.extern 4) (i32.const 2)))
+(assert_return (invoke "get" (i32.const 7)) (ref.null extern))
+(assert_return (invoke "get" (i32.const 8)) (ref.extern 4))
+(assert_return (invoke "get" (i32.const 9)) (ref.extern 4))
+
+(assert_return (invoke "fill" (i32.const 9) (ref.null extern) (i32.const 1)))
+(assert_return (invoke "get" (i32.const 8)) (ref.extern 4))
+(assert_return (invoke "get" (i32.const 9)) (ref.null extern))
+
+(assert_return (invoke "fill" (i32.const 10) (ref.extern 5) (i32.const 0)))
+(assert_return (invoke "get" (i32.const 9)) (ref.null extern))
+
+(assert_trap
+  (invoke "fill" (i32.const 8) (ref.extern 6) (i32.const 3))
+  "out of bounds"
+)
+(assert_return (invoke "get" (i32.const 7)) (ref.null extern))
+(assert_return (invoke "get" (i32.const 8)) (ref.extern 4))
+(assert_return (invoke "get" (i32.const 9)) (ref.null extern))
+
+(assert_trap
+  (invoke "fill" (i32.const 11) (ref.null extern) (i32.const 0))
+  "out of bounds"
+)
+
+(assert_trap
+  (invoke "fill" (i32.const 11) (ref.null extern) (i32.const 10))
+  "out of bounds"
+)
+
+
+;; Type errors
+
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-index-value-length-empty-vs-i32-i32
+      (table.fill $t)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-index-empty-vs-i32
+      (table.fill $t (ref.null extern) (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-value-empty-vs
+      (table.fill $t (i32.const 1) (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-length-empty-vs-i32
+      (table.fill $t (i32.const 1) (ref.null extern))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 0 externref)
+    (func $type-index-f32-vs-i32
+      (table.fill $t (f32.const 1) (ref.null extern) (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 0 funcref)
+    (func $type-value-vs-funcref (param $r externref)
+      (table.fill $t (i32.const 1) (local.get $r) (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 0 externref)
+    (func $type-length-f32-vs-i32
+      (table.fill $t (i32.const 1) (ref.null extern) (f32.const 1))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table $t1 1 externref)
+    (table $t2 1 funcref)
+    (func $type-value-externref-vs-funcref-multi (param $r externref)
+      (table.fill $t2 (i32.const 0) (local.get $r) (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table $t 1 externref)
+    (func $type-result-empty-vs-num (result i32)
+      (table.fill $t (i32.const 0) (ref.null extern) (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
diff --git a/tests/wast/reference-types/table_get.wast b/tests/wast/reference-types/table_get.wast
new file mode 100644
index 00000000..3df7190e
--- /dev/null
+++ b/tests/wast/reference-types/table_get.wast
@@ -0,0 +1,88 @@
+(module
+  (table $t2 2 externref)
+  (table $t3 3 funcref)
+  (elem (table $t3) (i32.const 1) func $dummy)
+  (func $dummy)
+
+  (func (export "init") (param $r externref)
+    (table.set $t2 (i32.const 1) (local.get $r))
+    (table.set $t3 (i32.const 2) (table.get $t3 (i32.const 1)))
+  )
+
+  (func (export "get-externref") (param $i i32) (result externref)
+    (table.get $t2 (local.get $i))
+  )
+  (func $f3 (export "get-funcref") (param $i i32) (result funcref)
+    (table.get $t3 (local.get $i))
+  )
+
+  (func (export "is_null-funcref") (param $i i32) (result i32)
+    (ref.is_null func (call $f3 (local.get $i)))
+  )
+)
+
+(invoke "init" (ref.extern 1))
+
+(assert_return (invoke "get-externref" (i32.const 0)) (ref.null extern))
+(assert_return (invoke "get-externref" (i32.const 1)) (ref.extern 1))
+
+(assert_return (invoke "get-funcref" (i32.const 0)) (ref.null func))
+(assert_return (invoke "is_null-funcref" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "is_null-funcref" (i32.const 2)) (i32.const 0))
+
+(assert_trap (invoke "get-externref" (i32.const 2)) "out of bounds")
+(assert_trap (invoke "get-funcref" (i32.const 3)) "out of bounds")
+(assert_trap (invoke "get-externref" (i32.const -1)) "out of bounds")
+(assert_trap (invoke "get-funcref" (i32.const -1)) "out of bounds")
+
+
+;; Type errors
+
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-index-empty-vs-i32 (result externref)
+      (table.get $t)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-index-f32-vs-i32 (result externref)
+      (table.get $t (f32.const 1))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-result-externref-vs-empty
+      (table.get $t (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-result-externref-vs-funcref (result funcref)
+      (table.get $t (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table $t1 1 funcref)
+    (table $t2 1 externref)
+    (func $type-result-externref-vs-funcref-multi (result funcref)
+      (table.get $t2 (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
diff --git a/tests/wast/reference-types/table_grow.wast b/tests/wast/reference-types/table_grow.wast
new file mode 100644
index 00000000..2b992ff7
--- /dev/null
+++ b/tests/wast/reference-types/table_grow.wast
@@ -0,0 +1,173 @@
+(module
+  (table $t 0 externref)
+
+  (func (export "get") (param $i i32) (result externref) (table.get $t (local.get $i)))
+  (func (export "set") (param $i i32) (param $r externref) (table.set $t (local.get $i) (local.get $r)))
+
+  (func (export "grow") (param $sz i32) (param $init externref) (result i32)
+    (table.grow $t (local.get $init) (local.get $sz))
+  )
+  (func (export "size") (result i32) (table.size $t))
+)
+
+(assert_return (invoke "size") (i32.const 0))
+(assert_trap (invoke "set" (i32.const 0) (ref.extern 2)) "out of bounds table access")
+(assert_trap (invoke "get" (i32.const 0)) "out of bounds table access")
+
+(assert_return (invoke "grow" (i32.const 1) (ref.null extern)) (i32.const 0))
+(assert_return (invoke "size") (i32.const 1))
+(assert_return (invoke "get" (i32.const 0)) (ref.null extern))
+(assert_return (invoke "set" (i32.const 0) (ref.extern 2)))
+(assert_return (invoke "get" (i32.const 0)) (ref.extern 2))
+(assert_trap (invoke "set" (i32.const 1) (ref.extern 2)) "out of bounds table access")
+(assert_trap (invoke "get" (i32.const 1)) "out of bounds table access")
+
+(assert_return (invoke "grow" (i32.const 4) (ref.extern 3)) (i32.const 1))
+(assert_return (invoke "size") (i32.const 5))
+(assert_return (invoke "get" (i32.const 0)) (ref.extern 2))
+(assert_return (invoke "set" (i32.const 0) (ref.extern 2)))
+(assert_return (invoke "get" (i32.const 0)) (ref.extern 2))
+(assert_return (invoke "get" (i32.const 1)) (ref.extern 3))
+(assert_return (invoke "get" (i32.const 4)) (ref.extern 3))
+(assert_return (invoke "set" (i32.const 4) (ref.extern 4)))
+(assert_return (invoke "get" (i32.const 4)) (ref.extern 4))
+(assert_trap (invoke "set" (i32.const 5) (ref.extern 2)) "out of bounds table access")
+(assert_trap (invoke "get" (i32.const 5)) "out of bounds table access")
+
+
+;; Reject growing to size outside i32 value range
+(module
+  (table $t 0x10 funcref)
+  (elem declare func $f)
+  (func $f (export "grow") (result i32)
+    (table.grow $t (ref.func $f) (i32.const 0xffff_fff0))
+  )
+)
+
+(assert_return (invoke "grow") (i32.const -1))
+
+
+(module
+  (table $t 0 externref)
+  (func (export "grow") (param i32) (result i32)
+    (table.grow $t (ref.null extern) (local.get 0))
+  )
+)
+
+(assert_return (invoke "grow" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "grow" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "grow" (i32.const 0)) (i32.const 1))
+(assert_return (invoke "grow" (i32.const 2)) (i32.const 1))
+(assert_return (invoke "grow" (i32.const 800)) (i32.const 3))
+
+
+(module
+  (table $t 0 10 externref)
+  (func (export "grow") (param i32) (result i32)
+    (table.grow $t (ref.null extern) (local.get 0))
+  )
+)
+
+(assert_return (invoke "grow" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "grow" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "grow" (i32.const 1)) (i32.const 1))
+(assert_return (invoke "grow" (i32.const 2)) (i32.const 2))
+(assert_return (invoke "grow" (i32.const 6)) (i32.const 4))
+(assert_return (invoke "grow" (i32.const 0)) (i32.const 10))
+(assert_return (invoke "grow" (i32.const 1)) (i32.const -1))
+(assert_return (invoke "grow" (i32.const 0x10000)) (i32.const -1))
+
+
+(module
+  (table $t 10 funcref)
+  (func (export "grow") (param i32) (result i32)
+    (table.grow $t (ref.null func) (local.get 0))
+  )
+  (elem declare func 1)
+  (func (export "check-table-null") (param i32 i32) (result funcref)
+    (local funcref)
+    (local.set 2 (ref.func 1))
+    (block
+      (loop
+        (local.set 2 (table.get $t (local.get 0)))
+        (br_if 1 (i32.eqz (ref.is_null func (local.get 2))))
+        (br_if 1 (i32.ge_u (local.get 0) (local.get 1)))
+        (local.set 0 (i32.add (local.get 0) (i32.const 1)))
+        (br_if 0 (i32.le_u (local.get 0) (local.get 1)))
+      )
+    )
+    (local.get 2)
+  )
+)
+
+(assert_return (invoke "check-table-null" (i32.const 0) (i32.const 9)) (ref.null func))
+(assert_return (invoke "grow" (i32.const 10)) (i32.const 10))
+(assert_return (invoke "check-table-null" (i32.const 0) (i32.const 19)) (ref.null func))
+
+
+;; Type errors
+
+(assert_invalid
+  (module
+    (table $t 0 externref)
+    (func $type-init-size-empty-vs-i32-externref (result i32)
+      (table.grow $t)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 0 externref)
+    (func $type-size-empty-vs-i32 (result i32)
+      (table.grow $t (ref.null extern))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 0 externref)
+    (func $type-init-empty-vs-externref (result i32)
+      (table.grow $t (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 0 externref)
+    (func $type-size-f32-vs-i32 (result i32)
+      (table.grow $t (ref.null extern) (f32.const 1))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 0 funcref)
+    (func $type-init-externref-vs-funcref (param $r externref) (result i32)
+      (table.grow $t (local.get $r) (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table $t 1 externref)
+    (func $type-result-i32-vs-empty
+      (table.grow $t (ref.null extern) (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 1 externref)
+    (func $type-result-i32-vs-f32 (result f32)
+      (table.grow $t (ref.null extern) (i32.const 0))
+    )
+  )
+  "type mismatch"
+)
diff --git a/tests/wast/reference-types/table_init.wast b/tests/wast/reference-types/table_init.wast
new file mode 100644
index 00000000..5f32cf7d
--- /dev/null
+++ b/tests/wast/reference-types/table_init.wast
@@ -0,0 +1,2120 @@
+;;
+;; Generated by ../meta/generate_table_init.js
+;; DO NOT EDIT THIS FILE.  CHANGE THE SOURCE AND REGENERATE.
+;;
+
+(module
+  (func (export "ef0") (result i32) (i32.const 0))
+  (func (export "ef1") (result i32) (i32.const 1))
+  (func (export "ef2") (result i32) (i32.const 2))
+  (func (export "ef3") (result i32) (i32.const 3))
+  (func (export "ef4") (result i32) (i32.const 4))
+)
+(register "a")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.init $t0 1 (i32.const 7) (i32.const 0) (i32.const 4)))
+  (func (export "check") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check" (i32.const 6)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 7)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 8)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 9)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 10)) (i32.const 8))
+(assert_trap (invoke "check" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.init $t0 3 (i32.const 15) (i32.const 1) (i32.const 3)))
+  (func (export "check") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 15)) (i32.const 9))
+(assert_return (invoke "check" (i32.const 16)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 17)) (i32.const 7))
+(assert_trap (invoke "check" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.init $t0 1 (i32.const 7) (i32.const 0) (i32.const 4))
+         (elem.drop 1)
+         (table.init $t0 3 (i32.const 15) (i32.const 1) (i32.const 3))
+         (elem.drop 3)
+         (table.copy $t0 0 (i32.const 20) (i32.const 15) (i32.const 5))
+         (table.copy $t0 0 (i32.const 21) (i32.const 29) (i32.const 1))
+         (table.copy $t0 0 (i32.const 24) (i32.const 10) (i32.const 1))
+         (table.copy $t0 0 (i32.const 13) (i32.const 11) (i32.const 4))
+         (table.copy $t0 0 (i32.const 19) (i32.const 20) (i32.const 5)))
+  (func (export "check") (param i32) (result i32)
+    (call_indirect $t0 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check" (i32.const 6)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 7)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 8)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 9)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 10)) (i32.const 8))
+(assert_trap (invoke "check" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 12)) (i32.const 7))
+(assert_trap (invoke "check" (i32.const 13)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 14)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 15)) (i32.const 5))
+(assert_return (invoke "check" (i32.const 16)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 17)) (i32.const 7))
+(assert_trap (invoke "check" (i32.const 18)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 19)) (i32.const 9))
+(assert_trap (invoke "check" (i32.const 20)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 21)) (i32.const 7))
+(assert_trap (invoke "check" (i32.const 22)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 23)) (i32.const 8))
+(assert_return (invoke "check" (i32.const 24)) (i32.const 8))
+(assert_trap (invoke "check" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.init $t1 1 (i32.const 7) (i32.const 0) (i32.const 4)))
+  (func (export "check") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check" (i32.const 6)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 7)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 8)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 9)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 10)) (i32.const 8))
+(assert_trap (invoke "check" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 15)) (i32.const 3))
+(assert_return (invoke "check" (i32.const 16)) (i32.const 6))
+(assert_trap (invoke "check" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.init $t1 3 (i32.const 15) (i32.const 1) (i32.const 3)))
+  (func (export "check") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 12)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 13)) (i32.const 5))
+(assert_return (invoke "check" (i32.const 14)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 15)) (i32.const 9))
+(assert_return (invoke "check" (i32.const 16)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 17)) (i32.const 7))
+(assert_trap (invoke "check" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 29)) "uninitialized element")
+
+(module
+  (type (func (result i32)))  ;; type #0
+  (import "a" "ef0" (func (result i32)))    ;; index 0
+  (import "a" "ef1" (func (result i32)))
+  (import "a" "ef2" (func (result i32)))
+  (import "a" "ef3" (func (result i32)))
+  (import "a" "ef4" (func (result i32)))    ;; index 4
+  (table $t0 30 30 funcref)
+  (table $t1 30 30 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 5))  ;; index 5
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))  ;; index 9
+  (func (export "test")
+    (table.init $t1 1 (i32.const 7) (i32.const 0) (i32.const 4))
+         (elem.drop 1)
+         (table.init $t1 3 (i32.const 15) (i32.const 1) (i32.const 3))
+         (elem.drop 3)
+         (table.copy $t1 1 (i32.const 20) (i32.const 15) (i32.const 5))
+         (table.copy $t1 1 (i32.const 21) (i32.const 29) (i32.const 1))
+         (table.copy $t1 1 (i32.const 24) (i32.const 10) (i32.const 1))
+         (table.copy $t1 1 (i32.const 13) (i32.const 11) (i32.const 4))
+         (table.copy $t1 1 (i32.const 19) (i32.const 20) (i32.const 5)))
+  (func (export "check") (param i32) (result i32)
+    (call_indirect $t1 (type 0) (local.get 0)))
+)
+
+(invoke "test")
+(assert_trap (invoke "check" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 1)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 2)) (i32.const 3))
+(assert_return (invoke "check" (i32.const 3)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 4)) (i32.const 4))
+(assert_return (invoke "check" (i32.const 5)) (i32.const 1))
+(assert_trap (invoke "check" (i32.const 6)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 7)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 8)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 9)) (i32.const 1))
+(assert_return (invoke "check" (i32.const 10)) (i32.const 8))
+(assert_trap (invoke "check" (i32.const 11)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 12)) (i32.const 7))
+(assert_trap (invoke "check" (i32.const 13)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 14)) (i32.const 7))
+(assert_return (invoke "check" (i32.const 15)) (i32.const 5))
+(assert_return (invoke "check" (i32.const 16)) (i32.const 2))
+(assert_return (invoke "check" (i32.const 17)) (i32.const 7))
+(assert_trap (invoke "check" (i32.const 18)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 19)) (i32.const 9))
+(assert_trap (invoke "check" (i32.const 20)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 21)) (i32.const 7))
+(assert_trap (invoke "check" (i32.const 22)) "uninitialized element")
+(assert_return (invoke "check" (i32.const 23)) (i32.const 8))
+(assert_return (invoke "check" (i32.const 24)) (i32.const 8))
+(assert_trap (invoke "check" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "check" (i32.const 29)) "uninitialized element")
+(assert_invalid
+  (module
+    (func (export "test")
+      (elem.drop 0)))
+  "unknown elem segment 0")
+
+(assert_invalid
+  (module
+    (func (export "test")
+      (table.init 0 (i32.const 12) (i32.const 1) (i32.const 1))))
+  "unknown table 0")
+
+(assert_invalid
+  (module
+    (elem funcref (ref.func 0))
+    (func (result i32) (i32.const 0))
+    (func (export "test")
+      (elem.drop 4)))
+  "unknown elem segment 4")
+
+(assert_invalid
+  (module
+    (elem funcref (ref.func 0))
+    (func (result i32) (i32.const 0))
+    (func (export "test")
+      (table.init 4 (i32.const 12) (i32.const 1) (i32.const 1))))
+  "unknown table 0")
+
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (elem.drop 2)
+    ))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init 2 (i32.const 12) (i32.const 1) (i32.const 1))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init 1 (i32.const 12) (i32.const 1) (i32.const 1))
+    (table.init 1 (i32.const 21) (i32.const 1) (i32.const 1))))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (elem.drop 1)
+    (elem.drop 1)))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (elem.drop 1)
+    (table.init 1 (i32.const 12) (i32.const 1) (i32.const 1))))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init 1 (i32.const 12) (i32.const 0) (i32.const 5))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init 1 (i32.const 12) (i32.const 2) (i32.const 3))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t0 1 (i32.const 28) (i32.const 1) (i32.const 3))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t0 1 (i32.const 12) (i32.const 4) (i32.const 0))
+    ))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t0 1 (i32.const 12) (i32.const 5) (i32.const 0))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t0 1 (i32.const 30) (i32.const 2) (i32.const 0))
+    ))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t0 1 (i32.const 31) (i32.const 2) (i32.const 0))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t0 1 (i32.const 30) (i32.const 4) (i32.const 0))
+    ))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t0) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t0) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t0 1 (i32.const 31) (i32.const 5) (i32.const 0))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t1 1 (i32.const 26) (i32.const 1) (i32.const 3))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t1 1 (i32.const 12) (i32.const 4) (i32.const 0))
+    ))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t1 1 (i32.const 12) (i32.const 5) (i32.const 0))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t1 1 (i32.const 28) (i32.const 2) (i32.const 0))
+    ))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t1 1 (i32.const 29) (i32.const 2) (i32.const 0))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t1 1 (i32.const 28) (i32.const 4) (i32.const 0))
+    ))
+(invoke "test")
+
+(module
+  (table $t0 30 30 funcref)
+  (table $t1 28 28 funcref)
+  (elem (table $t1) (i32.const 2) func 3 1 4 1)
+  (elem funcref
+    (ref.func 2) (ref.func 7) (ref.func 1) (ref.func 8))
+  (elem (table $t1) (i32.const 12) func 7 5 2 3 6)
+  (elem funcref
+    (ref.func 5) (ref.func 9) (ref.func 2) (ref.func 7) (ref.func 6))
+  (func (result i32) (i32.const 0))
+  (func (result i32) (i32.const 1))
+  (func (result i32) (i32.const 2))
+  (func (result i32) (i32.const 3))
+  (func (result i32) (i32.const 4))
+  (func (result i32) (i32.const 5))
+  (func (result i32) (i32.const 6))
+  (func (result i32) (i32.const 7))
+  (func (result i32) (i32.const 8))
+  (func (result i32) (i32.const 9))
+  (func (export "test")
+    (table.init $t1 1 (i32.const 29) (i32.const 5) (i32.const 0))
+    ))
+(assert_trap (invoke "test") "out of bounds")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (i32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (i32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (i32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (f32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (f32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (f32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (f32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (i64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (i64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (i64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (i64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (f64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (f64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (f64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i32.const 1) (f64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (i32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (i32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (i32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (i32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (f32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (f32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (f32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (f32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (i64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (i64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (i64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (i64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (f64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (f64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (f64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f32.const 1) (f64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (i32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (i32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (i32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (i32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (f32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (f32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (f32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (f32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (i64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (i64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (i64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (i64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (f64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (f64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (f64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (i64.const 1) (f64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (i32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (i32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (i32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (i32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (f32.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (f32.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (f32.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (f32.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (i64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (i64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (i64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (i64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (f64.const 1) (i32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (f64.const 1) (f32.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (f64.const 1) (i64.const 1))))
+  "type mismatch")
+
+(assert_invalid
+  (module
+    (table 10 funcref)
+    (elem funcref (ref.func $f0) (ref.func $f0) (ref.func $f0))
+    (func $f0)
+    (func (export "test")
+      (table.init 0 (f64.const 1) (f64.const 1) (f64.const 1))))
+  "type mismatch")
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem funcref
+    (ref.func $f0) (ref.func $f1) (ref.func $f2) (ref.func $f3)
+    (ref.func $f4) (ref.func $f5) (ref.func $f6) (ref.func $f7)
+    (ref.func $f8) (ref.func $f9) (ref.func $f10) (ref.func $f11)
+    (ref.func $f12) (ref.func $f13) (ref.func $f14) (ref.func $f15))
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $offs i32) (param $len i32)
+    (table.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+(assert_trap (invoke "run" (i32.const 24) (i32.const 16)) "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 32 64 funcref)
+  (elem funcref
+    (ref.func $f0) (ref.func $f1) (ref.func $f2) (ref.func $f3)
+    (ref.func $f4) (ref.func $f5) (ref.func $f6) (ref.func $f7)
+    (ref.func $f8) (ref.func $f9) (ref.func $f10) (ref.func $f11)
+    (ref.func $f12) (ref.func $f13) (ref.func $f14) (ref.func $f15))
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $offs i32) (param $len i32)
+    (table.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+(assert_trap (invoke "run" (i32.const 25) (i32.const 16)) "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 160 320 funcref)
+  (elem funcref
+    (ref.func $f0) (ref.func $f1) (ref.func $f2) (ref.func $f3)
+    (ref.func $f4) (ref.func $f5) (ref.func $f6) (ref.func $f7)
+    (ref.func $f8) (ref.func $f9) (ref.func $f10) (ref.func $f11)
+    (ref.func $f12) (ref.func $f13) (ref.func $f14) (ref.func $f15))
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $offs i32) (param $len i32)
+    (table.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+(assert_trap (invoke "run" (i32.const 96) (i32.const 32)) "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 32)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 33)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 34)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 35)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 36)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 37)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 38)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 52)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 53)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 54)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 56)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 62)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 63)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 65)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 66)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 67)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 68)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 69)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 70)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 71)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 72)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 73)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 74)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 75)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 76)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 77)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 78)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 79)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 80)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 82)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 83)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 84)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 85)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 86)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 87)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 89)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 91)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 92)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 159)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 160 320 funcref)
+  (elem funcref
+    (ref.func $f0) (ref.func $f1) (ref.func $f2) (ref.func $f3)
+    (ref.func $f4) (ref.func $f5) (ref.func $f6) (ref.func $f7)
+    (ref.func $f8) (ref.func $f9) (ref.func $f10) (ref.func $f11)
+    (ref.func $f12) (ref.func $f13) (ref.func $f14) (ref.func $f15))
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $offs i32) (param $len i32)
+    (table.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+(assert_trap (invoke "run" (i32.const 97) (i32.const 31)) "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 32)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 33)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 34)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 36)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 37)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 38)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 39)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 40)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 41)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 42)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 43)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 44)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 45)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 46)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 47)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 48)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 49)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 50)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 51)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 52)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 53)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 55)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 84)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 91)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 93)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 94)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 101)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 108)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 109)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 129)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 132)) "uninitialized element")
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+(assert_trap (invoke "test" (i32.const 134)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 135)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 136)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 137)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 138)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 139)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 140)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 141)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 142)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 143)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 144)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 145)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 146)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 147)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 148)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 149)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 150)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 151)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 152)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 153)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 154)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 155)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 156)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 157)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 158)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 159)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 64 64 funcref)
+  (elem funcref
+    (ref.func $f0) (ref.func $f1) (ref.func $f2) (ref.func $f3)
+    (ref.func $f4) (ref.func $f5) (ref.func $f6) (ref.func $f7)
+    (ref.func $f8) (ref.func $f9) (ref.func $f10) (ref.func $f11)
+    (ref.func $f12) (ref.func $f13) (ref.func $f14) (ref.func $f15))
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $offs i32) (param $len i32)
+    (table.init 0 (local.get $offs) (i32.const 0) (local.get $len))))
+(assert_trap (invoke "run" (i32.const 48) (i32.const 4294967280)) "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 16)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 17)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 18)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 19)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 20)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 21)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 22)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 23)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 24)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 25)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 26)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 27)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 28)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 29)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 30)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 31)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 32)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 33)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 34)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 35)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 36)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 37)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 38)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 39)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 40)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 41)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 42)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 43)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 44)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 45)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 46)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 47)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 48)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 49)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 50)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 51)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 52)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 53)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 54)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 55)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 56)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 57)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 58)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 59)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 60)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 61)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 62)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 63)) "uninitialized element")
+
+(module
+  (type (func (result i32)))
+  (table 16 16 funcref)
+  (elem funcref
+    (ref.func $f0) (ref.func $f1) (ref.func $f2) (ref.func $f3)
+    (ref.func $f4) (ref.func $f5) (ref.func $f6) (ref.func $f7)
+    (ref.func $f8) (ref.func $f9) (ref.func $f10) (ref.func $f11)
+    (ref.func $f12) (ref.func $f13) (ref.func $f14) (ref.func $f15))
+  (func $f0 (export "f0") (result i32) (i32.const 0))
+  (func $f1 (export "f1") (result i32) (i32.const 1))
+  (func $f2 (export "f2") (result i32) (i32.const 2))
+  (func $f3 (export "f3") (result i32) (i32.const 3))
+  (func $f4 (export "f4") (result i32) (i32.const 4))
+  (func $f5 (export "f5") (result i32) (i32.const 5))
+  (func $f6 (export "f6") (result i32) (i32.const 6))
+  (func $f7 (export "f7") (result i32) (i32.const 7))
+  (func $f8 (export "f8") (result i32) (i32.const 8))
+  (func $f9 (export "f9") (result i32) (i32.const 9))
+  (func $f10 (export "f10") (result i32) (i32.const 10))
+  (func $f11 (export "f11") (result i32) (i32.const 11))
+  (func $f12 (export "f12") (result i32) (i32.const 12))
+  (func $f13 (export "f13") (result i32) (i32.const 13))
+  (func $f14 (export "f14") (result i32) (i32.const 14))
+  (func $f15 (export "f15") (result i32) (i32.const 15))
+  (func (export "test") (param $n i32) (result i32)
+    (call_indirect (type 0) (local.get $n)))
+  (func (export "run") (param $offs i32) (param $len i32)
+    (table.init 0 (local.get $offs) (i32.const 8) (local.get $len))))
+(assert_trap (invoke "run" (i32.const 0) (i32.const 4294967292)) "out of bounds")
+(assert_trap (invoke "test" (i32.const 0)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 1)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 2)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 3)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 4)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 5)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 6)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 7)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 8)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 9)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 10)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 11)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 12)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 13)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 14)) "uninitialized element")
+(assert_trap (invoke "test" (i32.const 15)) "uninitialized element")
diff --git a/tests/wast/reference-types/table_set.wast b/tests/wast/reference-types/table_set.wast
new file mode 100644
index 00000000..6da9db87
--- /dev/null
+++ b/tests/wast/reference-types/table_set.wast
@@ -0,0 +1,119 @@
+(module
+  (table $t2 1 externref)
+  (table $t3 2 funcref)
+  (elem (table $t3) (i32.const 1) func $dummy)
+  (func $dummy)
+
+  (func (export "get-externref") (param $i i32) (result externref)
+    (table.get $t2 (local.get $i))
+  )
+  (func $f3 (export "get-funcref") (param $i i32) (result funcref)
+    (table.get $t3 (local.get $i))
+  )
+
+  (func (export "set-externref") (param $i i32) (param $r externref)
+    (table.set $t2 (local.get $i) (local.get $r))
+  )
+  (func (export "set-funcref") (param $i i32) (param $r funcref)
+    (table.set $t3 (local.get $i) (local.get $r))
+  )
+  (func (export "set-funcref-from") (param $i i32) (param $j i32)
+    (table.set $t3 (local.get $i) (table.get $t3 (local.get $j)))
+  )
+
+  (func (export "is_null-funcref") (param $i i32) (result i32)
+    (ref.is_null func (call $f3 (local.get $i)))
+  )
+)
+
+(assert_return (invoke "get-externref" (i32.const 0)) (ref.null extern))
+(assert_return (invoke "set-externref" (i32.const 0) (ref.extern 1)))
+(assert_return (invoke "get-externref" (i32.const 0)) (ref.extern 1))
+(assert_return (invoke "set-externref" (i32.const 0) (ref.null extern)))
+(assert_return (invoke "get-externref" (i32.const 0)) (ref.null extern))
+
+(assert_return (invoke "get-funcref" (i32.const 0)) (ref.null func))
+(assert_return (invoke "set-funcref-from" (i32.const 0) (i32.const 1)))
+(assert_return (invoke "is_null-funcref" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "set-funcref" (i32.const 0) (ref.null func)))
+(assert_return (invoke "get-funcref" (i32.const 0)) (ref.null func))
+
+(assert_trap (invoke "set-externref" (i32.const 2) (ref.null extern)) "out of bounds")
+(assert_trap (invoke "set-funcref" (i32.const 3) (ref.null func)) "out of bounds")
+(assert_trap (invoke "set-externref" (i32.const -1) (ref.null extern)) "out of bounds")
+(assert_trap (invoke "set-funcref" (i32.const -1) (ref.null func)) "out of bounds")
+
+(assert_trap (invoke "set-externref" (i32.const 2) (ref.extern 0)) "out of bounds")
+(assert_trap (invoke "set-funcref-from" (i32.const 3) (i32.const 1)) "out of bounds")
+(assert_trap (invoke "set-externref" (i32.const -1) (ref.extern 0)) "out of bounds")
+(assert_trap (invoke "set-funcref-from" (i32.const -1) (i32.const 1)) "out of bounds")
+
+
+;; Type errors
+
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-index-value-empty-vs-i32-externref
+      (table.set $t)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-index-empty-vs-i32
+      (table.set $t (ref.null extern))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-value-empty-vs-externref
+      (table.set $t (i32.const 1))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-size-f32-vs-i32
+      (table.set $t (f32.const 1) (ref.null extern))
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 10 funcref)
+    (func $type-value-externref-vs-funcref (param $r externref)
+      (table.set $t (i32.const 1) (local.get $r))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table $t1 1 externref)
+    (table $t2 1 funcref)
+    (func $type-value-externref-vs-funcref-multi (param $r externref)
+      (table.set $t2 (i32.const 0) (local.get $r))
+    )
+  )
+  "type mismatch"
+)
+
+(assert_invalid
+  (module
+    (table $t 10 externref)
+    (func $type-result-empty-vs-num (result i32)
+      (table.set $t (i32.const 0) (ref.null extern))
+    )
+  )
+  "type mismatch"
+)
diff --git a/tests/wast/reference-types/table_size.wast b/tests/wast/reference-types/table_size.wast
new file mode 100644
index 00000000..ad293b5e
--- /dev/null
+++ b/tests/wast/reference-types/table_size.wast
@@ -0,0 +1,86 @@
+(module
+  (table $t0 0 externref)
+  (table $t1 1 externref)
+  (table $t2 0 2 externref)
+  (table $t3 3 8 externref)
+
+  (func (export "size-t0") (result i32) (table.size $t0))
+  (func (export "size-t1") (result i32) (table.size $t1))
+  (func (export "size-t2") (result i32) (table.size $t2))
+  (func (export "size-t3") (result i32) (table.size $t3))
+
+  (func (export "grow-t0") (param $sz i32)
+    (drop (table.grow $t0 (ref.null extern) (local.get $sz)))
+  )
+  (func (export "grow-t1") (param $sz i32)
+    (drop (table.grow $t1 (ref.null extern) (local.get $sz)))
+  )
+  (func (export "grow-t2") (param $sz i32)
+    (drop (table.grow $t2 (ref.null extern) (local.get $sz)))
+  )
+  (func (export "grow-t3") (param $sz i32)
+    (drop (table.grow $t3 (ref.null extern) (local.get $sz)))
+  )
+)
+
+(assert_return (invoke "size-t0") (i32.const 0))
+(assert_return (invoke "grow-t0" (i32.const 1)))
+(assert_return (invoke "size-t0") (i32.const 1))
+(assert_return (invoke "grow-t0" (i32.const 4)))
+(assert_return (invoke "size-t0") (i32.const 5))
+(assert_return (invoke "grow-t0" (i32.const 0)))
+(assert_return (invoke "size-t0") (i32.const 5))
+
+(assert_return (invoke "size-t1") (i32.const 1))
+(assert_return (invoke "grow-t1" (i32.const 1)))
+(assert_return (invoke "size-t1") (i32.const 2))
+(assert_return (invoke "grow-t1" (i32.const 4)))
+(assert_return (invoke "size-t1") (i32.const 6))
+(assert_return (invoke "grow-t1" (i32.const 0)))
+(assert_return (invoke "size-t1") (i32.const 6))
+
+(assert_return (invoke "size-t2") (i32.const 0))
+(assert_return (invoke "grow-t2" (i32.const 3)))
+(assert_return (invoke "size-t2") (i32.const 0))
+(assert_return (invoke "grow-t2" (i32.const 1)))
+(assert_return (invoke "size-t2") (i32.const 1))
+(assert_return (invoke "grow-t2" (i32.const 0)))
+(assert_return (invoke "size-t2") (i32.const 1))
+(assert_return (invoke "grow-t2" (i32.const 4)))
+(assert_return (invoke "size-t2") (i32.const 1))
+(assert_return (invoke "grow-t2" (i32.const 1)))
+(assert_return (invoke "size-t2") (i32.const 2))
+
+(assert_return (invoke "size-t3") (i32.const 3))
+(assert_return (invoke "grow-t3" (i32.const 1)))
+(assert_return (invoke "size-t3") (i32.const 4))
+(assert_return (invoke "grow-t3" (i32.const 3)))
+(assert_return (invoke "size-t3") (i32.const 7))
+(assert_return (invoke "grow-t3" (i32.const 0)))
+(assert_return (invoke "size-t3") (i32.const 7))
+(assert_return (invoke "grow-t3" (i32.const 2)))
+(assert_return (invoke "size-t3") (i32.const 7))
+(assert_return (invoke "grow-t3" (i32.const 1)))
+(assert_return (invoke "size-t3") (i32.const 8))
+
+
+;; Type errors
+
+(assert_invalid
+  (module
+    (table $t 1 externref)
+    (func $type-result-i32-vs-empty
+      (table.size $t)
+    )
+  )
+  "type mismatch"
+)
+(assert_invalid
+  (module
+    (table $t 1 externref)
+    (func $type-result-i32-vs-f32 (result f32)
+      (table.size $t)
+    )
+  )
+  "type mismatch"
+)
diff --git a/tests/wast/reference-types/utf8-custom-section-id.wast b/tests/wast/reference-types/utf8-custom-section-id.wast
new file mode 100644
index 00000000..ee5fd7cc
--- /dev/null
+++ b/tests/wast/reference-types/utf8-custom-section-id.wast
@@ -0,0 +1,1792 @@
+;;;;;; Invalid UTF-8 custom section names
+
+;;;; Continuation bytes not preceded by prefixes
+
+;; encoding starts with (first) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\80"                       ;; "\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x8f) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\8f"                       ;; "\8f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x90) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\90"                       ;; "\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x9f) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\9f"                       ;; "\9f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0xa0) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\a0"                       ;; "\a0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (last) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\bf"                       ;; "\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 2-byte sequences
+
+;; 2-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\c2\80\80"                 ;; "\c2\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 2-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\c2"                       ;; "\c2"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 2-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c2\2e"                    ;; "\c2."
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 2-byte sequence contents
+
+;; overlong encoding after 0xc0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c0\80"                    ;; "\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c0\bf"                    ;; "\c0\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc1 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c1\80"                    ;; "\c1\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc1 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c1\bf"                    ;; "\c1\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a contination byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c2\00"                    ;; "\c2\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c2\7f"                    ;; "\c2\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c2\c0"                    ;; "\c2\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\c2\fd"                    ;; "\c2\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\df\00"                    ;; "\df\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\df\7f"                    ;; "\df\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\df\c0"                    ;; "\df\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\df\fd"                    ;; "\df\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequences
+
+;; 3-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\e1\80\80\80"              ;; "\e1\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\e1\80"                    ;; "\e1\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\80\2e"                 ;; "\e1\80."
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\e1"                       ;; "\e1"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\e1\2e"                    ;; "\e1."
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequence contents
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\00\a0"                 ;; "\e0\00\a0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\7f\a0"                 ;; "\e0\7f\a0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\80\80"                 ;; "\e0\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\80\a0"                 ;; "\e0\80\a0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\9f\a0"                 ;; "\e0\9f\a0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\9f\bf"                 ;; "\e0\9f\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\c0\a0"                 ;; "\e0\c0\a0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\fd\a0"                 ;; "\e0\fd\a0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\00\80"                 ;; "\e1\00\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\7f\80"                 ;; "\e1\7f\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\c0\80"                 ;; "\e1\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\fd\80"                 ;; "\e1\fd\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ec\00\80"                 ;; "\ec\00\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ec\7f\80"                 ;; "\ec\7f\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ec\c0\80"                 ;; "\ec\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ec\fd\80"                 ;; "\ec\fd\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\00\80"                 ;; "\ed\00\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\7f\80"                 ;; "\ed\7f\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\a0\80"                 ;; "\ed\a0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\a0\bf"                 ;; "\ed\a0\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\bf\80"                 ;; "\ed\bf\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\bf\bf"                 ;; "\ed\bf\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\c0\80"                 ;; "\ed\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\fd\80"                 ;; "\ed\fd\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ee\00\80"                 ;; "\ee\00\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ee\7f\80"                 ;; "\ee\7f\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ee\c0\80"                 ;; "\ee\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ee\fd\80"                 ;; "\ee\fd\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ef\00\80"                 ;; "\ef\00\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ef\7f\80"                 ;; "\ef\7f\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ef\c0\80"                 ;; "\ef\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ef\fd\80"                 ;; "\ef\fd\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequence contents (third byte)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\a0\00"                 ;; "\e0\a0\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\a0\7f"                 ;; "\e0\a0\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\a0\c0"                 ;; "\e0\a0\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e0\a0\fd"                 ;; "\e0\a0\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\80\00"                 ;; "\e1\80\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\80\7f"                 ;; "\e1\80\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\80\c0"                 ;; "\e1\80\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\e1\80\fd"                 ;; "\e1\80\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ec\80\00"                 ;; "\ec\80\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ec\80\7f"                 ;; "\ec\80\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ec\80\c0"                 ;; "\ec\80\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ec\80\fd"                 ;; "\ec\80\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\80\00"                 ;; "\ed\80\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\80\7f"                 ;; "\ed\80\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\80\c0"                 ;; "\ed\80\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ed\80\fd"                 ;; "\ed\80\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ee\80\00"                 ;; "\ee\80\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ee\80\7f"                 ;; "\ee\80\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ee\80\c0"                 ;; "\ee\80\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ee\80\fd"                 ;; "\ee\80\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ef\80\00"                 ;; "\ef\80\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ef\80\7f"                 ;; "\ef\80\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ef\80\c0"                 ;; "\ef\80\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\ef\80\fd"                 ;; "\ef\80\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequences
+
+;; 4-byte sequence contains 5 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\06"                       ;; custom section
+    "\05\f1\80\80\80\80"           ;; "\f1\80\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\f1\80\80"                 ;; "\f1\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\80\23"              ;; "\f1\80\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\f1\80"                    ;; "\f1\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\f1\80\23"                 ;; "\f1\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\f1"                       ;; "\f1"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\f1\23"                    ;; "\f1#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\00\90\90"              ;; "\f0\00\90\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\7f\90\90"              ;; "\f0\7f\90\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\80\80\80"              ;; "\f0\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\80\90\90"              ;; "\f0\80\90\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\8f\90\90"              ;; "\f0\8f\90\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\8f\bf\bf"              ;; "\f0\8f\bf\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\c0\90\90"              ;; "\f0\c0\90\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\fd\90\90"              ;; "\f0\fd\90\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\00\80\80"              ;; "\f1\00\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\7f\80\80"              ;; "\f1\7f\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\c0\80\80"              ;; "\f1\c0\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\fd\80\80"              ;; "\f1\fd\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\00\80\80"              ;; "\f3\00\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\7f\80\80"              ;; "\f3\7f\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\c0\80\80"              ;; "\f3\c0\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\fd\80\80"              ;; "\f3\fd\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\00\80\80"              ;; "\f4\00\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\7f\80\80"              ;; "\f4\7f\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (first) malformed code point
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\90\80\80"              ;; "\f4\90\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; malformed code point
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\bf\80\80"              ;; "\f4\bf\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\c0\80\80"              ;; "\f4\c0\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\fd\80\80"              ;; "\f4\fd\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (first) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f5\80\80\80"              ;; "\f5\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f7\80\80\80"              ;; "\f7\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f7\bf\bf\bf"              ;; "\f7\bf\bf\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents (third byte)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\90\00\90"              ;; "\f0\90\00\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\90\7f\90"              ;; "\f0\90\7f\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\90\c0\90"              ;; "\f0\90\c0\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\90\fd\90"              ;; "\f0\90\fd\90"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\00\80"              ;; "\f1\80\00\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\7f\80"              ;; "\f1\80\7f\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\c0\80"              ;; "\f1\80\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\fd\80"              ;; "\f1\80\fd\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\80\00\80"              ;; "\f3\80\00\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\80\7f\80"              ;; "\f3\80\7f\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\80\c0\80"              ;; "\f3\80\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\80\fd\80"              ;; "\f3\80\fd\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\80\00\80"              ;; "\f4\80\00\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\80\7f\80"              ;; "\f4\80\7f\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\80\c0\80"              ;; "\f4\80\c0\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\80\fd\80"              ;; "\f4\80\fd\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents (fourth byte)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\90\90\00"              ;; "\f0\90\90\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\90\90\7f"              ;; "\f0\90\90\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\90\90\c0"              ;; "\f0\90\90\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f0\90\90\fd"              ;; "\f0\90\90\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\80\00"              ;; "\f1\80\80\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\80\7f"              ;; "\f1\80\80\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\80\c0"              ;; "\f1\80\80\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f1\80\80\fd"              ;; "\f1\80\80\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\80\80\00"              ;; "\f3\80\80\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\80\80\7f"              ;; "\f3\80\80\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\80\80\c0"              ;; "\f3\80\80\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f3\80\80\fd"              ;; "\f3\80\80\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\80\80\00"              ;; "\f4\80\80\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\80\80\7f"              ;; "\f4\80\80\7f"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\80\80\c0"              ;; "\f4\80\80\c0"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f4\80\80\fd"              ;; "\f4\80\80\fd"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 5-byte sequences
+
+;; 5-byte sequence contains 6 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\07"                       ;; custom section
+    "\06\f8\80\80\80\80\80"        ;; "\f8\80\80\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 4 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f8\80\80\80"              ;; "\f8\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\06"                       ;; custom section
+    "\05\f8\80\80\80\23"           ;; "\f8\80\80\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\f8\80\80"                 ;; "\f8\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\f8\80\80\23"              ;; "\f8\80\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\f8\80"                    ;; "\f8\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\f8\80\23"                 ;; "\f8\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\f8"                       ;; "\f8"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\f8\23"                    ;; "\f8#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 5-byte sequence contents
+
+;; (first) malformed 5-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\06"                       ;; custom section
+    "\05\f8\80\80\80\80"           ;; "\f8\80\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 5-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\06"                       ;; custom section
+    "\05\fb\bf\bf\bf\bf"           ;; "\fb\bf\bf\bf\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 6-byte sequences
+
+;; 6-byte sequence contains 7 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\08"                       ;; custom section
+    "\07\fc\80\80\80\80\80\80"     ;; "\fc\80\80\80\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 5 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\06"                       ;; custom section
+    "\05\fc\80\80\80\80"           ;; "\fc\80\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 5 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\07"                       ;; custom section
+    "\06\fc\80\80\80\80\23"        ;; "\fc\80\80\80\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 4 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\fc\80\80\80"              ;; "\fc\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\06"                       ;; custom section
+    "\05\fc\80\80\80\23"           ;; "\fc\80\80\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\fc\80\80"                 ;; "\fc\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\fc\80\80\23"              ;; "\fc\80\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\fc\80"                    ;; "\fc\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\04"                       ;; custom section
+    "\03\fc\80\23"                 ;; "\fc\80#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\fc"                       ;; "\fc"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\fc\23"                    ;; "\fc#"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 6-byte sequence contents
+
+;; (first) malformed 6-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\07"                       ;; custom section
+    "\06\fc\80\80\80\80\80"        ;; "\fc\80\80\80\80\80"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 6-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\07"                       ;; custom section
+    "\06\fd\bf\bf\bf\bf\bf"        ;; "\fd\bf\bf\bf\bf\bf"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; Miscellaneous malformed bytes
+
+;; malformed byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\fe"                       ;; "\fe"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; malformed byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\02"                       ;; custom section
+    "\01\ff"                       ;; "\ff"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-16BE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\fe\ff"                    ;; "\fe\ff"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-32BE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\00\00\fe\ff"              ;; "\00\00\fe\ff"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-16LE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\03"                       ;; custom section
+    "\02\ff\fe"                    ;; "\ff\fe"
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-32LE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\00\05"                       ;; custom section
+    "\04\ff\fe\00\00"              ;; "\ff\fe\00\00"
+  )
+  "malformed UTF-8 encoding"
+)
+
diff --git a/tests/wast/reference-types/utf8-import-field.wast b/tests/wast/reference-types/utf8-import-field.wast
new file mode 100644
index 00000000..0d030dab
--- /dev/null
+++ b/tests/wast/reference-types/utf8-import-field.wast
@@ -0,0 +1,2672 @@
+;;;;;; Invalid UTF-8 import field names
+
+;;;; Continuation bytes not preceded by prefixes
+
+;; encoding starts with (first) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\80"                       ;; "\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x8f) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\8f"                       ;; "\8f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x90) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\90"                       ;; "\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x9f) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\9f"                       ;; "\9f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0xa0) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\a0"                       ;; "\a0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (last) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\bf"                       ;; "\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 2-byte sequences
+
+;; 2-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\c2\80\80"                 ;; "\c2\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 2-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\c2"                       ;; "\c2"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 2-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c2\2e"                    ;; "\c2."
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 2-byte sequence contents
+
+;; overlong encoding after 0xc0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c0\80"                    ;; "\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c0\bf"                    ;; "\c0\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc1 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c1\80"                    ;; "\c1\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc1 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c1\bf"                    ;; "\c1\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a contination byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c2\00"                    ;; "\c2\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c2\7f"                    ;; "\c2\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c2\c0"                    ;; "\c2\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\c2\fd"                    ;; "\c2\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\df\00"                    ;; "\df\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\df\7f"                    ;; "\df\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\df\c0"                    ;; "\df\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\df\fd"                    ;; "\df\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequences
+
+;; 3-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\e1\80\80\80"              ;; "\e1\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\e1\80"                    ;; "\e1\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\80\2e"                 ;; "\e1\80."
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\e1"                       ;; "\e1"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\e1\2e"                    ;; "\e1."
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequence contents
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\00\a0"                 ;; "\e0\00\a0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\7f\a0"                 ;; "\e0\7f\a0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\80\80"                 ;; "\e0\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\80\a0"                 ;; "\e0\80\a0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\9f\a0"                 ;; "\e0\9f\a0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\9f\bf"                 ;; "\e0\9f\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\c0\a0"                 ;; "\e0\c0\a0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\fd\a0"                 ;; "\e0\fd\a0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\00\80"                 ;; "\e1\00\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\7f\80"                 ;; "\e1\7f\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\c0\80"                 ;; "\e1\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\fd\80"                 ;; "\e1\fd\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ec\00\80"                 ;; "\ec\00\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ec\7f\80"                 ;; "\ec\7f\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ec\c0\80"                 ;; "\ec\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ec\fd\80"                 ;; "\ec\fd\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\00\80"                 ;; "\ed\00\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\7f\80"                 ;; "\ed\7f\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\a0\80"                 ;; "\ed\a0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\a0\bf"                 ;; "\ed\a0\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\bf\80"                 ;; "\ed\bf\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\bf\bf"                 ;; "\ed\bf\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\c0\80"                 ;; "\ed\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\fd\80"                 ;; "\ed\fd\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ee\00\80"                 ;; "\ee\00\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ee\7f\80"                 ;; "\ee\7f\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ee\c0\80"                 ;; "\ee\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ee\fd\80"                 ;; "\ee\fd\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ef\00\80"                 ;; "\ef\00\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ef\7f\80"                 ;; "\ef\7f\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ef\c0\80"                 ;; "\ef\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ef\fd\80"                 ;; "\ef\fd\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequence contents (third byte)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\a0\00"                 ;; "\e0\a0\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\a0\7f"                 ;; "\e0\a0\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\a0\c0"                 ;; "\e0\a0\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e0\a0\fd"                 ;; "\e0\a0\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\80\00"                 ;; "\e1\80\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\80\7f"                 ;; "\e1\80\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\80\c0"                 ;; "\e1\80\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\e1\80\fd"                 ;; "\e1\80\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ec\80\00"                 ;; "\ec\80\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ec\80\7f"                 ;; "\ec\80\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ec\80\c0"                 ;; "\ec\80\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ec\80\fd"                 ;; "\ec\80\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\80\00"                 ;; "\ed\80\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\80\7f"                 ;; "\ed\80\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\80\c0"                 ;; "\ed\80\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ed\80\fd"                 ;; "\ed\80\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ee\80\00"                 ;; "\ee\80\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ee\80\7f"                 ;; "\ee\80\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ee\80\c0"                 ;; "\ee\80\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ee\80\fd"                 ;; "\ee\80\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ef\80\00"                 ;; "\ef\80\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ef\80\7f"                 ;; "\ef\80\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ef\80\c0"                 ;; "\ef\80\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\ef\80\fd"                 ;; "\ef\80\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequences
+
+;; 4-byte sequence contains 5 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\05\f1\80\80\80\80"           ;; "\f1\80\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\f1\80\80"                 ;; "\f1\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\80\23"              ;; "\f1\80\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\f1\80"                    ;; "\f1\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\f1\80\23"                 ;; "\f1\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\f1"                       ;; "\f1"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\f1\23"                    ;; "\f1#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\00\90\90"              ;; "\f0\00\90\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\7f\90\90"              ;; "\f0\7f\90\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\80\80\80"              ;; "\f0\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\80\90\90"              ;; "\f0\80\90\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\8f\90\90"              ;; "\f0\8f\90\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\8f\bf\bf"              ;; "\f0\8f\bf\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\c0\90\90"              ;; "\f0\c0\90\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\fd\90\90"              ;; "\f0\fd\90\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\00\80\80"              ;; "\f1\00\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\7f\80\80"              ;; "\f1\7f\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\c0\80\80"              ;; "\f1\c0\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\fd\80\80"              ;; "\f1\fd\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\00\80\80"              ;; "\f3\00\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\7f\80\80"              ;; "\f3\7f\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\c0\80\80"              ;; "\f3\c0\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\fd\80\80"              ;; "\f3\fd\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\00\80\80"              ;; "\f4\00\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\7f\80\80"              ;; "\f4\7f\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (first) malformed code point
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\90\80\80"              ;; "\f4\90\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; malformed code point
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\bf\80\80"              ;; "\f4\bf\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\c0\80\80"              ;; "\f4\c0\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\fd\80\80"              ;; "\f4\fd\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (first) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f5\80\80\80"              ;; "\f5\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f7\80\80\80"              ;; "\f7\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f7\bf\bf\bf"              ;; "\f7\bf\bf\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents (third byte)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\90\00\90"              ;; "\f0\90\00\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\90\7f\90"              ;; "\f0\90\7f\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\90\c0\90"              ;; "\f0\90\c0\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\90\fd\90"              ;; "\f0\90\fd\90"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\00\80"              ;; "\f1\80\00\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\7f\80"              ;; "\f1\80\7f\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\c0\80"              ;; "\f1\80\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\fd\80"              ;; "\f1\80\fd\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\80\00\80"              ;; "\f3\80\00\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\80\7f\80"              ;; "\f3\80\7f\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\80\c0\80"              ;; "\f3\80\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\80\fd\80"              ;; "\f3\80\fd\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\80\00\80"              ;; "\f4\80\00\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\80\7f\80"              ;; "\f4\80\7f\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\80\c0\80"              ;; "\f4\80\c0\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\80\fd\80"              ;; "\f4\80\fd\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents (fourth byte)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\90\90\00"              ;; "\f0\90\90\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\90\90\7f"              ;; "\f0\90\90\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\90\90\c0"              ;; "\f0\90\90\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f0\90\90\fd"              ;; "\f0\90\90\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\80\00"              ;; "\f1\80\80\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\80\7f"              ;; "\f1\80\80\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\80\c0"              ;; "\f1\80\80\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f1\80\80\fd"              ;; "\f1\80\80\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\80\80\00"              ;; "\f3\80\80\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\80\80\7f"              ;; "\f3\80\80\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\80\80\c0"              ;; "\f3\80\80\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f3\80\80\fd"              ;; "\f3\80\80\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\80\80\00"              ;; "\f4\80\80\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\80\80\7f"              ;; "\f4\80\80\7f"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\80\80\c0"              ;; "\f4\80\80\c0"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f4\80\80\fd"              ;; "\f4\80\80\fd"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 5-byte sequences
+
+;; 5-byte sequence contains 6 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\10"                       ;; import section
+    "\01"                          ;; length 1
+    "\06\f8\80\80\80\80\80"        ;; "\f8\80\80\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 4 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f8\80\80\80"              ;; "\f8\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\05\f8\80\80\80\23"           ;; "\f8\80\80\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\f8\80\80"                 ;; "\f8\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\f8\80\80\23"              ;; "\f8\80\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\f8\80"                    ;; "\f8\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\f8\80\23"                 ;; "\f8\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\f8"                       ;; "\f8"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\f8\23"                    ;; "\f8#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 5-byte sequence contents
+
+;; (first) malformed 5-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\05\f8\80\80\80\80"           ;; "\f8\80\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 5-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\05\fb\bf\bf\bf\bf"           ;; "\fb\bf\bf\bf\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 6-byte sequences
+
+;; 6-byte sequence contains 7 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\11"                       ;; import section
+    "\01"                          ;; length 1
+    "\07\fc\80\80\80\80\80\80"     ;; "\fc\80\80\80\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 5 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\05\fc\80\80\80\80"           ;; "\fc\80\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 5 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\10"                       ;; import section
+    "\01"                          ;; length 1
+    "\06\fc\80\80\80\80\23"        ;; "\fc\80\80\80\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 4 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\fc\80\80\80"              ;; "\fc\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\05\fc\80\80\80\23"           ;; "\fc\80\80\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\fc\80\80"                 ;; "\fc\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\fc\80\80\23"              ;; "\fc\80\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\fc\80"                    ;; "\fc\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\03\fc\80\23"                 ;; "\fc\80#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\fc"                       ;; "\fc"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\fc\23"                    ;; "\fc#"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 6-byte sequence contents
+
+;; (first) malformed 6-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\10"                       ;; import section
+    "\01"                          ;; length 1
+    "\06\fc\80\80\80\80\80"        ;; "\fc\80\80\80\80\80"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 6-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\10"                       ;; import section
+    "\01"                          ;; length 1
+    "\06\fd\bf\bf\bf\bf\bf"        ;; "\fd\bf\bf\bf\bf\bf"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; Miscellaneous malformed bytes
+
+;; malformed byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\fe"                       ;; "\fe"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; malformed byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\01\ff"                       ;; "\ff"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-16BE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\fe\ff"                    ;; "\fe\ff"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-32BE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\00\00\fe\ff"              ;; "\00\00\fe\ff"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-16LE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\02\ff\fe"                    ;; "\ff\fe"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-32LE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\ff\fe\00\00"              ;; "\ff\fe\00\00"
+    "\04\74\65\73\74"              ;; "test"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
diff --git a/tests/wast/reference-types/utf8-import-module.wast b/tests/wast/reference-types/utf8-import-module.wast
new file mode 100644
index 00000000..5a092da0
--- /dev/null
+++ b/tests/wast/reference-types/utf8-import-module.wast
@@ -0,0 +1,2672 @@
+;;;;;; Invalid UTF-8 import module names
+
+;;;; Continuation bytes not preceded by prefixes
+
+;; encoding starts with (first) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\80"                       ;; "\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x8f) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\8f"                       ;; "\8f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x90) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\90"                       ;; "\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0x9f) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\9f"                       ;; "\9f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (0xa0) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\a0"                       ;; "\a0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; encoding starts with (last) continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\bf"                       ;; "\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 2-byte sequences
+
+;; 2-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\c2\80\80"                 ;; "\c2\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 2-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\c2"                       ;; "\c2"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 2-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c2\2e"                    ;; "\c2."
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 2-byte sequence contents
+
+;; overlong encoding after 0xc0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c0\80"                    ;; "\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c0\bf"                    ;; "\c0\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc1 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c1\80"                    ;; "\c1\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xc1 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c1\bf"                    ;; "\c1\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a contination byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c2\00"                    ;; "\c2\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c2\7f"                    ;; "\c2\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c2\c0"                    ;; "\c2\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (first) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\c2\fd"                    ;; "\c2\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\df\00"                    ;; "\df\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\df\7f"                    ;; "\df\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\df\c0"                    ;; "\df\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte after (last) 2-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\df\fd"                    ;; "\df\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequences
+
+;; 3-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\e1\80\80\80"              ;; "\e1\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\e1\80"                    ;; "\e1\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\80\2e"                 ;; "\e1\80."
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\e1"                       ;; "\e1"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 3-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\e1\2e"                    ;; "\e1."
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequence contents
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\00\a0"                 ;; "\e0\00\a0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\7f\a0"                 ;; "\e0\7f\a0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\80\80"                 ;; "\e0\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\80\a0"                 ;; "\e0\80\a0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\9f\a0"                 ;; "\e0\9f\a0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xe0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\9f\bf"                 ;; "\e0\9f\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\c0\a0"                 ;; "\e0\c0\a0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\fd\a0"                 ;; "\e0\fd\a0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\00\80"                 ;; "\e1\00\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\7f\80"                 ;; "\e1\7f\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\c0\80"                 ;; "\e1\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\fd\80"                 ;; "\e1\fd\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ec\00\80"                 ;; "\ec\00\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ec\7f\80"                 ;; "\ec\7f\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ec\c0\80"                 ;; "\ec\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ec\fd\80"                 ;; "\ec\fd\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\00\80"                 ;; "\ed\00\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\7f\80"                 ;; "\ed\7f\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\a0\80"                 ;; "\ed\a0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\a0\bf"                 ;; "\ed\a0\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\bf\80"                 ;; "\ed\bf\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; byte sequence reserved for UTF-16 surrogate half
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\bf\bf"                 ;; "\ed\bf\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\c0\80"                 ;; "\ed\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\fd\80"                 ;; "\ed\fd\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ee\00\80"                 ;; "\ee\00\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ee\7f\80"                 ;; "\ee\7f\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ee\c0\80"                 ;; "\ee\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ee\fd\80"                 ;; "\ee\fd\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ef\00\80"                 ;; "\ef\00\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ef\7f\80"                 ;; "\ef\7f\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ef\c0\80"                 ;; "\ef\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ef\fd\80"                 ;; "\ef\fd\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 3-byte sequence contents (third byte)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\a0\00"                 ;; "\e0\a0\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\a0\7f"                 ;; "\e0\a0\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\a0\c0"                 ;; "\e0\a0\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xe0) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e0\a0\fd"                 ;; "\e0\a0\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\80\00"                 ;; "\e1\80\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\80\7f"                 ;; "\e1\80\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\80\c0"                 ;; "\e1\80\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\e1\80\fd"                 ;; "\e1\80\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ec\80\00"                 ;; "\ec\80\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ec\80\7f"                 ;; "\ec\80\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ec\80\c0"                 ;; "\ec\80\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ec\80\fd"                 ;; "\ec\80\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\80\00"                 ;; "\ed\80\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\80\7f"                 ;; "\ed\80\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\80\c0"                 ;; "\ed\80\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xed) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ed\80\fd"                 ;; "\ed\80\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ee\80\00"                 ;; "\ee\80\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ee\80\7f"                 ;; "\ee\80\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ee\80\c0"                 ;; "\ee\80\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ee\80\fd"                 ;; "\ee\80\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ef\80\00"                 ;; "\ef\80\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ef\80\7f"                 ;; "\ef\80\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ef\80\c0"                 ;; "\ef\80\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 3-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\ef\80\fd"                 ;; "\ef\80\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequences
+
+;; 4-byte sequence contains 5 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\05\f1\80\80\80\80"           ;; "\f1\80\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\f1\80\80"                 ;; "\f1\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\80\23"              ;; "\f1\80\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\f1\80"                    ;; "\f1\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\f1\80\23"                 ;; "\f1\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\f1"                       ;; "\f1"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 4-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\f1\23"                    ;; "\f1#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\00\90\90"              ;; "\f0\00\90\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\7f\90\90"              ;; "\f0\7f\90\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\80\80\80"              ;; "\f0\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\80\90\90"              ;; "\f0\80\90\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\8f\90\90"              ;; "\f0\8f\90\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; overlong encoding after 0xf0 prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\8f\bf\bf"              ;; "\f0\8f\bf\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\c0\90\90"              ;; "\f0\c0\90\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\fd\90\90"              ;; "\f0\fd\90\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\00\80\80"              ;; "\f1\00\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\7f\80\80"              ;; "\f1\7f\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\c0\80\80"              ;; "\f1\c0\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\fd\80\80"              ;; "\f1\fd\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\00\80\80"              ;; "\f3\00\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\7f\80\80"              ;; "\f3\7f\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\c0\80\80"              ;; "\f3\c0\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\fd\80\80"              ;; "\f3\fd\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\00\80\80"              ;; "\f4\00\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\7f\80\80"              ;; "\f4\7f\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (first) malformed code point
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\90\80\80"              ;; "\f4\90\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; malformed code point
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\bf\80\80"              ;; "\f4\bf\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\c0\80\80"              ;; "\f4\c0\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; first byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\fd\80\80"              ;; "\f4\fd\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (first) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f5\80\80\80"              ;; "\f5\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f7\80\80\80"              ;; "\f7\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 4-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f7\bf\bf\bf"              ;; "\f7\bf\bf\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents (third byte)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\90\00\90"              ;; "\f0\90\00\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\90\7f\90"              ;; "\f0\90\7f\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\90\c0\90"              ;; "\f0\90\c0\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\90\fd\90"              ;; "\f0\90\fd\90"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\00\80"              ;; "\f1\80\00\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\7f\80"              ;; "\f1\80\7f\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\c0\80"              ;; "\f1\80\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\fd\80"              ;; "\f1\80\fd\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\80\00\80"              ;; "\f3\80\00\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\80\7f\80"              ;; "\f3\80\7f\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\80\c0\80"              ;; "\f3\80\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\80\fd\80"              ;; "\f3\80\fd\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\80\00\80"              ;; "\f4\80\00\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\80\7f\80"              ;; "\f4\80\7f\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\80\c0\80"              ;; "\f4\80\c0\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; second byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\80\fd\80"              ;; "\f4\80\fd\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 4-byte sequence contents (fourth byte)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\90\90\00"              ;; "\f0\90\90\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\90\90\7f"              ;; "\f0\90\90\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\90\90\c0"              ;; "\f0\90\90\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf0) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f0\90\90\fd"              ;; "\f0\90\90\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\80\00"              ;; "\f1\80\80\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\80\7f"              ;; "\f1\80\80\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\80\c0"              ;; "\f1\80\80\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (first normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f1\80\80\fd"              ;; "\f1\80\80\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\80\80\00"              ;; "\f3\80\80\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\80\80\7f"              ;; "\f3\80\80\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\80\80\c0"              ;; "\f3\80\80\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (last normal) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f3\80\80\fd"              ;; "\f3\80\80\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\80\80\00"              ;; "\f4\80\80\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\80\80\7f"              ;; "\f4\80\80\7f"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\80\80\c0"              ;; "\f4\80\80\c0"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; third byte after (0xf4) 4-byte prefix not a continuation byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f4\80\80\fd"              ;; "\f4\80\80\fd"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 5-byte sequences
+
+;; 5-byte sequence contains 6 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\10"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\06\f8\80\80\80\80\80"        ;; "\f8\80\80\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 4 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f8\80\80\80"              ;; "\f8\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\05\f8\80\80\80\23"           ;; "\f8\80\80\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\f8\80\80"                 ;; "\f8\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\f8\80\80\23"              ;; "\f8\80\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\f8\80"                    ;; "\f8\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\f8\80\23"                 ;; "\f8\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\f8"                       ;; "\f8"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 5-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\f8\23"                    ;; "\f8#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 5-byte sequence contents
+
+;; (first) malformed 5-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\05\f8\80\80\80\80"           ;; "\f8\80\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 5-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\05\fb\bf\bf\bf\bf"           ;; "\fb\bf\bf\bf\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 6-byte sequences
+
+;; 6-byte sequence contains 7 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\11"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\07\fc\80\80\80\80\80\80"     ;; "\fc\80\80\80\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 5 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\05\fc\80\80\80\80"           ;; "\fc\80\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 5 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\10"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\06\fc\80\80\80\80\23"        ;; "\fc\80\80\80\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 4 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\fc\80\80\80"              ;; "\fc\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 4 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0f"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\05\fc\80\80\80\23"           ;; "\fc\80\80\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 3 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\fc\80\80"                 ;; "\fc\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 3 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\fc\80\80\23"              ;; "\fc\80\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 2 bytes at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\fc\80"                    ;; "\fc\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 2 bytes
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0d"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\03\fc\80\23"                 ;; "\fc\80#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 1 byte at end of string
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\fc"                       ;; "\fc"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; 6-byte sequence contains 1 byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\fc\23"                    ;; "\fc#"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; 6-byte sequence contents
+
+;; (first) malformed 6-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\10"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\06\fc\80\80\80\80\80"        ;; "\fc\80\80\80\80\80"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; (last) malformed 6-byte prefix
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\10"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\06\fd\bf\bf\bf\bf\bf"        ;; "\fd\bf\bf\bf\bf\bf"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;;;; Miscellaneous malformed bytes
+
+;; malformed byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\fe"                       ;; "\fe"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; malformed byte
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0b"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\01\ff"                       ;; "\ff"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-16BE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\fe\ff"                    ;; "\fe\ff"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-32BE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\00\00\fe\ff"              ;; "\00\00\fe\ff"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-16LE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0c"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\02\ff\fe"                    ;; "\ff\fe"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
+;; UTF-32LE BOM
+(assert_malformed
+  (module binary
+    "\00asm" "\01\00\00\00"
+    "\02\0e"                       ;; import section
+    "\01"                          ;; length 1
+    "\04\74\65\73\74"              ;; "test"
+    "\04\ff\fe\00\00"              ;; "\ff\fe\00\00"
+    "\03"                          ;; GlobalImport
+    "\7f"                          ;; i32
+    "\00"                          ;; immutable
+  )
+  "malformed UTF-8 encoding"
+)
+
diff --git a/tests/wast/reference-types/utf8-invalid-encoding.wast b/tests/wast/reference-types/utf8-invalid-encoding.wast
new file mode 100644
index 00000000..cfd59693
--- /dev/null
+++ b/tests/wast/reference-types/utf8-invalid-encoding.wast
@@ -0,0 +1,176 @@
+(assert_malformed (module quote "(func (export \"\\00\\00\\fe\\ff\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\8f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\9f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\a0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c0\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c1\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c1\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c2\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c2\\2e\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c2\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c2\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c2\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c2\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\c2\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\df\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\df\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\df\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\df\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\00\\a0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\7f\\a0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\80\\a0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\9f\\a0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\9f\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\a0\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\a0\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\a0\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\a0\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\c0\\a0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e0\\fd\\a0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\00\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\2e\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\7f\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\80\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\80\\2e\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\80\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\80\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\80\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\e1\\fd\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ec\\00\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ec\\7f\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ec\\80\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ec\\80\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ec\\80\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ec\\80\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ec\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ec\\fd\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\00\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\7f\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\80\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\80\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\80\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\80\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\a0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\a0\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\bf\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\bf\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ed\\fd\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ee\\00\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ee\\7f\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ee\\80\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ee\\80\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ee\\80\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ee\\80\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ee\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ee\\fd\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ef\\00\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ef\\7f\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ef\\80\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ef\\80\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ef\\80\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ef\\80\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ef\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ef\\fd\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\00\\90\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\7f\\90\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\80\\90\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\8f\\90\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\8f\\bf\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\90\\00\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\90\\7f\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\90\\90\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\90\\90\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\90\\90\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\90\\90\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\90\\c0\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\90\\fd\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\c0\\90\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f0\\fd\\90\\90\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\00\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\7f\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\00\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\7f\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\80\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\80\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\80\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\80\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\80\\fd\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\c0\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f1\\fd\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\00\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\7f\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\80\\00\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\80\\7f\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\80\\80\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\80\\80\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\80\\80\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\80\\80\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\80\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\80\\fd\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\c0\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f3\\fd\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\00\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\7f\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\80\\00\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\80\\7f\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\80\\80\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\80\\80\\7f\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\80\\80\\c0\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\80\\80\\fd\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\80\\c0\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\80\\fd\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\90\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\bf\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\c0\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f4\\fd\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f5\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f7\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f7\\bf\\bf\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\80\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\80\\80\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\80\\80\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\80\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\f8\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fb\\bf\\bf\\bf\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\80\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\80\\80\\80\\23\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\80\\80\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\80\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\\80\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fc\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fd\\bf\\bf\\bf\\bf\\bf\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fe\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\fe\\ff\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ff\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ff\\fe\\00\\00\"))") "malformed UTF-8 encoding")
+(assert_malformed (module quote "(func (export \"\\ff\\fe\"))") "malformed UTF-8 encoding")