fix: Prevent mutating immutable bindings to mutable reference types

acvm-repo/acir_field/Cargo.toml

@@ -16,7 +16,6 @@ repository.workspace = true
 hex.workspace = true
 num-bigint.workspace = true
 serde.workspace = true
-num-traits.workspace = true
 
 ark-bn254 = { version = "^0.4.0", optional = true, default-features = false, features = [
     "curve",

acvm-repo/acir_field/src/lib.rs

@@ -3,9 +3,6 @@
 #![warn(clippy::semicolon_if_nothing_returned)]
 #![cfg_attr(not(test), warn(unused_crate_dependencies, unused_extern_crates))]
 
-use num_bigint::BigUint;
-use num_traits::Num;
-
 cfg_if::cfg_if! {
     if #[cfg(feature = "bn254")] {
         mod generic_ark;
@@ -21,33 +18,12 @@ cfg_if::cfg_if! {
     }
 }
 
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Debug)]
 pub enum FieldOptions {
     BN254,
     BLS12_381,
 }
 
-impl FieldOptions {
-    pub fn to_string(&self) -> &str {
-        match self {
-            FieldOptions::BN254 => "bn254",
-            FieldOptions::BLS12_381 => "bls12_381",
-        }
-    }
-
-    pub fn is_native_field(str: &str) -> bool {
-        let big_num = if let Some(hex) = str.strip_prefix("0x") {
-            BigUint::from_str_radix(hex, 16)
-        } else {
-            BigUint::from_str_radix(str, 10)
-        };
-        if let Ok(big_num) = big_num {
-            big_num == FieldElement::modulus()
-        } else {
-            CHOSEN_FIELD.to_string() == str
-        }
-    }
-}
 // This is needed because features are additive through the dependency graph; if a dependency turns on the bn254, then it
 // will be turned on in all crates that depend on it
 #[macro_export]

acvm-repo/acvm/src/compiler/optimizers/general.rs

@@ -31,7 +31,7 @@ fn simplify_mul_terms(mut gate: Expression) -> Expression {
     let mut hash_map: IndexMap<(Witness, Witness), FieldElement> = IndexMap::new();
 
     // Canonicalize the ordering of the multiplication, lets just order by variable name
-    for (scale, w_l, w_r) in gate.mul_terms.into_iter() {
+    for (scale, w_l, w_r) in gate.mul_terms.clone().into_iter() {
         let mut pair = [w_l, w_r];
         // Sort using rust sort algorithm
         pair.sort();

acvm-repo/acvm/src/compiler/optimizers/mod.rs

@@ -23,22 +23,20 @@ pub fn optimize(acir: Circuit) -> (Circuit, AcirTransformationMap) {
 /// Applies [`ProofSystemCompiler`][crate::ProofSystemCompiler] independent optimizations to a [`Circuit`].
 pub(super) fn optimize_internal(acir: Circuit) -> (Circuit, AcirTransformationMap) {
     // General optimizer pass
-    let opcodes: Vec<Opcode> = acir
-        .opcodes
-        .into_iter()
-        .map(|opcode| {
-            if let Opcode::Arithmetic(arith_expr) = opcode {
-                Opcode::Arithmetic(GeneralOptimizer::optimize(arith_expr))
-            } else {
-                opcode
+    let mut opcodes: Vec<Opcode> = Vec::new();
+    for opcode in acir.opcodes {
+        match opcode {
+            Opcode::Arithmetic(arith_expr) => {
+                opcodes.push(Opcode::Arithmetic(GeneralOptimizer::optimize(arith_expr)));
             }
-        })
-        .collect();
+            other_opcode => opcodes.push(other_opcode),
+        };
+    }
     let acir = Circuit { opcodes, ..acir };
 
     // Track original acir opcode positions throughout the transformation passes of the compilation
     // by applying the modifications done to the circuit opcodes and also to the opcode_positions (delete and insert)
-    let acir_opcode_positions = (0..acir.opcodes.len()).collect();
+    let acir_opcode_positions = acir.opcodes.iter().enumerate().map(|(i, _)| i).collect();
 
     // Unused memory optimization pass
     let memory_optimizer = UnusedMemoryOptimizer::new(acir);

acvm-repo/acvm/src/compiler/optimizers/redundant_range.rs

@@ -74,13 +74,13 @@ impl RangeOptimizer {
 
         let mut new_order_list = Vec::with_capacity(order_list.len());
         let mut optimized_opcodes = Vec::with_capacity(self.circuit.opcodes.len());
-        for (idx, opcode) in self.circuit.opcodes.into_iter().enumerate() {
-            let (witness, num_bits) = match extract_range_opcode(&opcode) {
+        for (idx, opcode) in self.circuit.opcodes.iter().enumerate() {
+            let (witness, num_bits) = match extract_range_opcode(opcode) {
                 Some(range_opcode) => range_opcode,
                 None => {
                     // If its not the range opcode, add it to the opcode
                     // list and continue;
-                    optimized_opcodes.push(opcode);
+                    optimized_opcodes.push(opcode.clone());
                     new_order_list.push(order_list[idx]);
                     continue;
                 }
@@ -101,11 +101,18 @@ impl RangeOptimizer {
             if is_lowest_bit_size {
                 already_seen_witness.insert(witness);
                 new_order_list.push(order_list[idx]);
-                optimized_opcodes.push(opcode);
+                optimized_opcodes.push(opcode.clone());
             }
         }
 
-        (Circuit { opcodes: optimized_opcodes, ..self.circuit }, new_order_list)
+        (
+            Circuit {
+                current_witness_index: self.circuit.current_witness_index,
+                opcodes: optimized_opcodes,
+                ..self.circuit
+            },
+            new_order_list,
+        )
     }
 }
 

acvm-repo/acvm/src/compiler/optimizers/unused_memory.rs

@@ -42,16 +42,16 @@ impl UnusedMemoryOptimizer {
     ) -> (Circuit, Vec<usize>) {
         let mut new_order_list = Vec::with_capacity(order_list.len());
         let mut optimized_opcodes = Vec::with_capacity(self.circuit.opcodes.len());
-        for (idx, opcode) in self.circuit.opcodes.into_iter().enumerate() {
+        for (idx, opcode) in self.circuit.opcodes.iter().enumerate() {
             match opcode {
                 Opcode::MemoryInit { block_id, .. }
-                    if self.unused_memory_initializations.contains(&block_id) =>
+                    if self.unused_memory_initializations.contains(block_id) =>
                 {
                     // Drop opcode
                 }
                 _ => {
                     new_order_list.push(order_list[idx]);
-                    optimized_opcodes.push(opcode);
+                    optimized_opcodes.push(opcode.clone());
                 }
             }
         }

acvm-repo/acvm/src/compiler/transformers/mod.rs

@@ -76,13 +76,13 @@ pub(super) fn transform_internal(
     // maps a normalized expression to the intermediate variable which represents the expression, along with its 'norm'
     // the 'norm' is simply the value of the first non zero coefficient in the expression, taken from the linear terms, or quadratic terms if there is none.
     let mut intermediate_variables: IndexMap<Expression, (FieldElement, Witness)> = IndexMap::new();
-    for (index, opcode) in acir.opcodes.into_iter().enumerate() {
+    for (index, opcode) in acir.opcodes.iter().enumerate() {
         match opcode {
             Opcode::Arithmetic(arith_expr) => {
                 let len = intermediate_variables.len();
 
                 let arith_expr = transformer.transform(
-                    arith_expr,
+                    arith_expr.clone(),
                     &mut intermediate_variables,
                     &mut next_witness_index,
                 );
@@ -104,7 +104,7 @@ pub(super) fn transform_internal(
                     transformed_opcodes.push(Opcode::Arithmetic(opcode));
                 }
             }
-            Opcode::BlackBoxFuncCall(ref func) => {
+            Opcode::BlackBoxFuncCall(func) => {
                 match func {
                     acir::circuit::opcodes::BlackBoxFuncCall::AND { output, .. }
                     | acir::circuit::opcodes::BlackBoxFuncCall::XOR { output, .. } => {
@@ -146,9 +146,9 @@ pub(super) fn transform_internal(
                 }
 
                 new_acir_opcode_positions.push(acir_opcode_positions[index]);
-                transformed_opcodes.push(opcode);
+                transformed_opcodes.push(opcode.clone());
             }
-            Opcode::Directive(ref directive) => {
+            Opcode::Directive(directive) => {
                 match directive {
                     Directive::Quotient(quotient_directive) => {
                         transformer.mark_solvable(quotient_directive.q);
@@ -166,14 +166,14 @@ pub(super) fn transform_internal(
                     }
                 }
                 new_acir_opcode_positions.push(acir_opcode_positions[index]);
-                transformed_opcodes.push(opcode);
+                transformed_opcodes.push(opcode.clone());
             }
             Opcode::MemoryInit { .. } => {
                 // `MemoryInit` does not write values to the `WitnessMap`
                 new_acir_opcode_positions.push(acir_opcode_positions[index]);
-                transformed_opcodes.push(opcode);
+                transformed_opcodes.push(opcode.clone());
             }
-            Opcode::MemoryOp { ref op, .. } => {
+            Opcode::MemoryOp { op, .. } => {
                 for (_, witness1, witness2) in &op.value.mul_terms {
                     transformer.mark_solvable(*witness1);
                     transformer.mark_solvable(*witness2);
@@ -182,9 +182,9 @@ pub(super) fn transform_internal(
                     transformer.mark_solvable(*witness);
                 }
                 new_acir_opcode_positions.push(acir_opcode_positions[index]);
-                transformed_opcodes.push(opcode);
+                transformed_opcodes.push(opcode.clone());
             }
-            Opcode::Brillig(ref brillig) => {
+            Opcode::Brillig(brillig) => {
                 for output in &brillig.outputs {
                     match output {
                         BrilligOutputs::Simple(w) => transformer.mark_solvable(*w),
@@ -196,7 +196,7 @@ pub(super) fn transform_internal(
                     }
                 }
                 new_acir_opcode_positions.push(acir_opcode_positions[index]);
-                transformed_opcodes.push(opcode);
+                transformed_opcodes.push(opcode.clone());
             }
         }
     }

compiler/integration-tests/test/browser/recursion.test.ts

@@ -9,7 +9,6 @@ import { acvm, abi, generateWitness } from '@noir-lang/noir_js';
 import * as TOML from 'smol-toml';
 import { BarretenbergBackend } from '@noir-lang/backend_barretenberg';
 import { getFile } from './utils.js';
-import { Field, InputMap } from '@noir-lang/noirc_abi';
 
 const logger = new Logger({ name: 'test', minLevel: TEST_LOG_LEVEL });
 
@@ -51,7 +50,7 @@ describe('It compiles noir program code, receiving circuit bytes and abi object.
 
   it('Should generate valid inner proof for correct input, then verify proof within a proof', async () => {
     const main_program = await getCircuit(circuit_main_source);
-    const main_inputs: InputMap = TOML.parse(circuit_main_toml) as InputMap;
+    const main_inputs = TOML.parse(circuit_main_toml);
 
     const main_backend = new BarretenbergBackend(main_program);
 
@@ -70,10 +69,10 @@ describe('It compiles noir program code, receiving circuit bytes and abi object.
       numPublicInputs,
     );
 
-    const recursion_inputs: InputMap = {
+    const recursion_inputs = {
       verification_key: vkAsFields,
       proof: proofAsFields,
-      public_inputs: [main_inputs.y as Field],
+      public_inputs: [main_inputs.y],
       key_hash: vkHash,
       input_aggregation_object: ['0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0'],
     };

compiler/noirc_evaluator/src/ssa/acir_gen/mod.rs

@@ -766,36 +766,6 @@ impl Context {
 
                 Ok(AcirValue::Array(elements))
             }
-            (
-                AcirValue::DynamicArray(AcirDynamicArray { block_id, len, .. }),
-                AcirValue::Array(dummy_values),
-            ) => {
-                let dummy_values = dummy_values
-                    .into_iter()
-                    .flat_map(|val| val.clone().flatten())
-                    .map(|(var, typ)| AcirValue::Var(var, typ))
-                    .collect::<Vec<_>>();
-
-                assert_eq!(
-                    *len,
-                    dummy_values.len(),
-                    "ICE: The store value and dummy must have the same number of inner values"
-                );
-
-                let values = try_vecmap(0..*len, |i| {
-                    let index_var = self.acir_context.add_constant(FieldElement::from(i as u128));
-
-                    let read = self.acir_context.read_from_memory(*block_id, &index_var)?;
-                    Ok::<AcirValue, RuntimeError>(AcirValue::Var(read, AcirType::field()))
-                })?;
-
-                let mut elements = im::Vector::new();
-                for (val, dummy_val) in values.iter().zip(dummy_values) {
-                    elements.push_back(self.convert_array_set_store_value(val, &dummy_val)?);
-                }
-
-                Ok(AcirValue::Array(elements))
-            }
             (AcirValue::DynamicArray(_), AcirValue::DynamicArray(_)) => {
                 unimplemented!("ICE: setting a dynamic array not supported");
             }
@@ -955,14 +925,8 @@ impl Context {
                     self.array_set_value(value, block_id, var_index)?;
                 }
             }
-            AcirValue::DynamicArray(AcirDynamicArray { block_id: inner_block_id, len, .. }) => {
-                let values = try_vecmap(0..len, |i| {
-                    let index_var = self.acir_context.add_constant(FieldElement::from(i as u128));
-
-                    let read = self.acir_context.read_from_memory(inner_block_id, &index_var)?;
-                    Ok::<AcirValue, RuntimeError>(AcirValue::Var(read, AcirType::field()))
-                })?;
-                self.array_set_value(AcirValue::Array(values.into()), block_id, var_index)?;
+            AcirValue::DynamicArray(_) => {
+                unimplemented!("ICE: setting a dynamic array not supported");
             }
         }
         Ok(())
@@ -987,7 +951,7 @@ impl Context {
         if !already_initialized {
             let value = &dfg[array_id];
             match value {
-                Value::Array { .. } | Value::Instruction { .. } => {
+                Value::Array { .. } => {
                     let value = self.convert_value(array_id, dfg);
                     let len = if matches!(array_typ, Type::Array(_, _)) {
                         array_typ.flattened_size()
@@ -1001,7 +965,7 @@ impl Context {
                         message: format!("Array {array_id} should be initialized"),
                         call_stack: self.acir_context.get_call_stack(),
                     }
-                    .into());
+                    .into())
                 }
             }
         }