Auto merge of rust-lang#72982 - tblah:riscv-ui-tests, r=estebank

resolve: Sort E0408 errors by Symbol str

This is a request for comments implementing my suggested solution to rust-lang#72913

Previously errors were sorted by Symbol index instead of the string. The indexes are not the same between architectures because Symbols for architecture extensions (e.g. x86 AVX or RISC-V d) are interned before the source file is parsed. RISC-V's naming of extensions after single letters led to it having errors sorted differently for test cases using single letter variable names. Instead sort the errors by the Symbol string so that it is stable across architectures.

While I was at it, there's also 8edb05c  skipping some ui tests which I think are irrelevant for risc-v.

src/librustc_resolve/late.rs

@@ -1331,7 +1331,8 @@ impl<'a, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {
 
         // 3) Report all missing variables we found.
         let mut missing_vars = missing_vars.iter_mut().collect::<Vec<_>>();
-        missing_vars.sort();
+        missing_vars.sort_by_key(|(sym, _err)| sym.as_str());
+
         for (name, mut v) in missing_vars {
             if inconsistent_vars.contains_key(name) {
                 v.could_be_path = false;

src/test/ui/borrowck/borrowck-asm.rs

@@ -3,6 +3,7 @@
 // ignore-powerpc
 // ignore-powerpc64
 // ignore-powerpc64le
+// ignore-riscv64
 // ignore-sparc
 // ignore-sparc64
 

src/test/ui/borrowck/borrowck-asm.stderr

@@ -1,5 +1,5 @@
 error[E0382]: use of moved value: `x`
-  --> $DIR/borrowck-asm.rs:24:17
+  --> $DIR/borrowck-asm.rs:25:17
    |
 LL |         let x = &mut 0isize;
    |             - move occurs because `x` has type `&mut isize`, which does not implement the `Copy` trait
@@ -11,7 +11,7 @@ LL |         let z = x;
    |                 ^ value used here after move
 
 error[E0503]: cannot use `x` because it was mutably borrowed
-  --> $DIR/borrowck-asm.rs:31:37
+  --> $DIR/borrowck-asm.rs:32:37
    |
 LL |         let y = &mut x;
    |                 ------ borrow of `x` occurs here
@@ -23,7 +23,7 @@ LL |         let z = y;
    |                 - borrow later used here
 
 error[E0384]: cannot assign twice to immutable variable `x`
-  --> $DIR/borrowck-asm.rs:39:36
+  --> $DIR/borrowck-asm.rs:40:36
    |
 LL |         let x = 3;
    |             -
@@ -35,7 +35,7 @@ LL |             llvm_asm!("nop" : "=r"(x));
    |                                    ^ cannot assign twice to immutable variable
 
 error[E0384]: cannot assign twice to immutable variable `x`
-  --> $DIR/borrowck-asm.rs:53:36
+  --> $DIR/borrowck-asm.rs:54:36
    |
 LL |         let x = 3;
    |             -
@@ -47,13 +47,13 @@ LL |             llvm_asm!("nop" : "+r"(x));
    |                                    ^ cannot assign twice to immutable variable
 
 error[E0381]: use of possibly-uninitialized variable: `x`
-  --> $DIR/borrowck-asm.rs:60:37
+  --> $DIR/borrowck-asm.rs:61:37
    |
 LL |             llvm_asm!("nop" : "=*r"(x));
    |                                     ^ use of possibly-uninitialized `x`
 
 error[E0506]: cannot assign to `x` because it is borrowed
-  --> $DIR/borrowck-asm.rs:68:36
+  --> $DIR/borrowck-asm.rs:69:36
    |
 LL |         let y = &*x;
    |                 --- borrow of `x` occurs here
@@ -65,7 +65,7 @@ LL |         let z = y;
    |                 - borrow later used here
 
 error[E0382]: use of moved value: `x`
-  --> $DIR/borrowck-asm.rs:76:45
+  --> $DIR/borrowck-asm.rs:77:45
    |
 LL |         let x = &mut 2;
    |             - move occurs because `x` has type `&mut i32`, which does not implement the `Copy` trait

src/test/ui/c-variadic/variadic-ffi-1.rs

@@ -1,5 +1,6 @@
 // ignore-arm stdcall isn't supported
 // ignore-aarch64 stdcall isn't supported
+// ignore-riscv64 stdcall isn't supported
 
 extern "stdcall" {
     fn printf(_: *const u8, ...); //~ ERROR: variadic function must have C or cdecl calling

src/test/ui/c-variadic/variadic-ffi-1.stderr

@@ -1,11 +1,11 @@
 error[E0045]: C-variadic function must have C or cdecl calling convention
-  --> $DIR/variadic-ffi-1.rs:5:5
+  --> $DIR/variadic-ffi-1.rs:6:5
    |
 LL |     fn printf(_: *const u8, ...);
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadics require C or cdecl calling convention
 
 error[E0060]: this function takes at least 2 arguments but 0 arguments were supplied
-  --> $DIR/variadic-ffi-1.rs:16:9
+  --> $DIR/variadic-ffi-1.rs:17:9
    |
 LL |     fn foo(f: isize, x: u8, ...);
    |     ----------------------------- defined here
@@ -16,7 +16,7 @@ LL |         foo();
    |         expected at least 2 arguments
 
 error[E0060]: this function takes at least 2 arguments but 1 argument was supplied
-  --> $DIR/variadic-ffi-1.rs:17:9
+  --> $DIR/variadic-ffi-1.rs:18:9
    |
 LL |     fn foo(f: isize, x: u8, ...);
    |     ----------------------------- defined here
@@ -27,7 +27,7 @@ LL |         foo(1);
    |         expected at least 2 arguments
 
 error[E0308]: mismatched types
-  --> $DIR/variadic-ffi-1.rs:19:56
+  --> $DIR/variadic-ffi-1.rs:20:56
    |
 LL |         let x: unsafe extern "C" fn(f: isize, x: u8) = foo;
    |                -------------------------------------   ^^^ expected non-variadic fn, found variadic function
@@ -38,7 +38,7 @@ LL |         let x: unsafe extern "C" fn(f: isize, x: u8) = foo;
                  found fn item `unsafe extern "C" fn(_, _, ...) {foo}`
 
 error[E0308]: mismatched types
-  --> $DIR/variadic-ffi-1.rs:20:54
+  --> $DIR/variadic-ffi-1.rs:21:54
    |
 LL |         let y: extern "C" fn(f: isize, x: u8, ...) = bar;
    |                -----------------------------------   ^^^ expected variadic fn, found non-variadic function
@@ -49,37 +49,37 @@ LL |         let y: extern "C" fn(f: isize, x: u8, ...) = bar;
                  found fn item `extern "C" fn(_, _) {bar}`
 
 error[E0617]: can't pass `f32` to variadic function
-  --> $DIR/variadic-ffi-1.rs:22:19
+  --> $DIR/variadic-ffi-1.rs:23:19
    |
 LL |         foo(1, 2, 3f32);
    |                   ^^^^ help: cast the value to `c_double`: `3f32 as c_double`
 
 error[E0617]: can't pass `bool` to variadic function
-  --> $DIR/variadic-ffi-1.rs:23:19
+  --> $DIR/variadic-ffi-1.rs:24:19
    |
 LL |         foo(1, 2, true);
    |                   ^^^^ help: cast the value to `c_int`: `true as c_int`
 
 error[E0617]: can't pass `i8` to variadic function
-  --> $DIR/variadic-ffi-1.rs:24:19
+  --> $DIR/variadic-ffi-1.rs:25:19
    |
 LL |         foo(1, 2, 1i8);
    |                   ^^^ help: cast the value to `c_int`: `1i8 as c_int`
 
 error[E0617]: can't pass `u8` to variadic function
-  --> $DIR/variadic-ffi-1.rs:25:19
+  --> $DIR/variadic-ffi-1.rs:26:19
    |
 LL |         foo(1, 2, 1u8);
    |                   ^^^ help: cast the value to `c_uint`: `1u8 as c_uint`
 
 error[E0617]: can't pass `i16` to variadic function
-  --> $DIR/variadic-ffi-1.rs:26:19
+  --> $DIR/variadic-ffi-1.rs:27:19
    |
 LL |         foo(1, 2, 1i16);
    |                   ^^^^ help: cast the value to `c_int`: `1i16 as c_int`
 
 error[E0617]: can't pass `u16` to variadic function
-  --> $DIR/variadic-ffi-1.rs:27:19
+  --> $DIR/variadic-ffi-1.rs:28:19
    |
 LL |         foo(1, 2, 1u16);
    |                   ^^^^ help: cast the value to `c_uint`: `1u16 as c_uint`

src/test/ui/cfg/conditional-compile-arch.rs

@@ -36,3 +36,6 @@ pub fn main() { }
 
 #[cfg(target_arch = "sparc64")]
 pub fn main() { }
+
+#[cfg(target_arch = "riscv64")]
+pub fn main() { }

src/test/ui/extern/extern-methods.rs

@@ -1,6 +1,7 @@
 // run-pass
 // ignore-arm
 // ignore-aarch64
+// ignore-riscv64 fastcall isn't supported
 
 trait A {
     extern "fastcall" fn test1(i: i32);

src/test/ui/extern/extern-thiscall.rs

@@ -1,6 +1,7 @@
 // run-pass
 // ignore-arm
 // ignore-aarch64
+// ignore-riscv64 thiscall isn't supported
 
 #![feature(abi_thiscall)]
 

src/test/ui/extern/extern-vectorcall.rs

@@ -1,6 +1,7 @@
 // run-pass
 // ignore-arm
 // ignore-aarch64
+// ignore-riscv64 vectorcall isn't supported
 
 #![feature(abi_vectorcall)]
 

src/test/ui/feature-gates/feature-gate-abi-msp430-interrupt.rs

@@ -1,6 +1,8 @@
 // Test that the MSP430 interrupt ABI cannot be used when msp430_interrupt
 // feature gate is not used.
 
+// ignore-riscv64 msp430 is not supported
+
 extern "msp430-interrupt" fn foo() {}
 //~^ ERROR msp430-interrupt ABI is experimental and subject to change
 

src/test/ui/feature-gates/feature-gate-abi-msp430-interrupt.stderr

@@ -1,5 +1,5 @@
 error[E0658]: msp430-interrupt ABI is experimental and subject to change
-  --> $DIR/feature-gate-abi-msp430-interrupt.rs:4:8
+  --> $DIR/feature-gate-abi-msp430-interrupt.rs:6:8
    |
 LL | extern "msp430-interrupt" fn foo() {}
    |        ^^^^^^^^^^^^^^^^^^

src/test/ui/llvm-asm/llvm-asm-bad-clobber.rs

@@ -6,6 +6,7 @@
 // ignore-powerpc
 // ignore-powerpc64
 // ignore-powerpc64le
+// ignore-riscv64
 // ignore-sparc
 // ignore-sparc64
 // ignore-mips

src/test/ui/llvm-asm/llvm-asm-bad-clobber.stderr

@@ -1,5 +1,5 @@
 error[E0664]: clobber should not be surrounded by braces
-  --> $DIR/llvm-asm-bad-clobber.rs:22:42
+  --> $DIR/llvm-asm-bad-clobber.rs:23:42
    |
 LL |         llvm_asm!("xor %eax, %eax" : : : "{eax}");
    |                                          ^^^^^^^

src/test/ui/llvm-asm/llvm-asm-in-bad-modifier.rs

@@ -3,6 +3,7 @@
 // ignore-powerpc
 // ignore-powerpc64
 // ignore-powerpc64le
+// ignore-riscv64
 // ignore-sparc
 // ignore-sparc64
 // ignore-mips

src/test/ui/llvm-asm/llvm-asm-in-bad-modifier.stderr

@@ -1,11 +1,11 @@
 error[E0662]: input operand constraint contains '='
-  --> $DIR/llvm-asm-in-bad-modifier.rs:23:44
+  --> $DIR/llvm-asm-in-bad-modifier.rs:24:44
    |
 LL |         llvm_asm!("mov $1, $0" : "=r"(x) : "=r"(5));
    |                                            ^^^^
 
 error[E0663]: input operand constraint contains '+'
-  --> $DIR/llvm-asm-in-bad-modifier.rs:24:44
+  --> $DIR/llvm-asm-in-bad-modifier.rs:25:44
    |
 LL |         llvm_asm!("mov $1, $0" : "=r"(y) : "+r"(5));
    |                                            ^^^^

src/test/ui/llvm-asm/llvm-asm-misplaced-option.rs

@@ -7,6 +7,7 @@
 // ignore-powerpc
 // ignore-powerpc64
 // ignore-powerpc64le
+// ignore-riscv64
 // ignore-sparc
 // ignore-sparc64
 // ignore-mips

src/test/ui/llvm-asm/llvm-asm-misplaced-option.stderr

@@ -1,11 +1,11 @@
 warning: unrecognized option
-  --> $DIR/llvm-asm-misplaced-option.rs:24:69
+  --> $DIR/llvm-asm-misplaced-option.rs:25:69
    |
 LL |         llvm_asm!("mov $1, $0" : "=r"(x) : "r"(5_usize), "0"(x) : : "cc");
    |                                                                     ^^^^
 
 warning: expected a clobber, found an option
-  --> $DIR/llvm-asm-misplaced-option.rs:31:85
+  --> $DIR/llvm-asm-misplaced-option.rs:32:85
    |
 LL |         llvm_asm!("add $2, $1; mov $1, $0" : "=r"(x) : "r"(x), "r"(8_usize) : "cc", "volatile");
    |                                                                                     ^^^^^^^^^^

src/test/ui/llvm-asm/llvm-asm-out-assign-imm.rs

@@ -3,6 +3,7 @@
 // ignore-powerpc
 // ignore-powerpc64
 // ignore-powerpc64le
+// ignore-riscv64
 // ignore-sparc
 // ignore-sparc64
 // ignore-mips

src/test/ui/llvm-asm/llvm-asm-out-assign-imm.stderr

@@ -1,5 +1,5 @@
 error[E0384]: cannot assign twice to immutable variable `x`
-  --> $DIR/llvm-asm-out-assign-imm.rs:24:39
+  --> $DIR/llvm-asm-out-assign-imm.rs:25:39
    |
 LL |     let x: isize;
    |         - help: make this binding mutable: `mut x`

src/test/ui/llvm-asm/llvm-asm-out-no-modifier.rs

@@ -3,6 +3,7 @@
 // ignore-powerpc
 // ignore-powerpc64
 // ignore-powerpc64le
+// ignore-riscv64
 // ignore-sparc
 // ignore-sparc64
 // ignore-mips

src/test/ui/llvm-asm/llvm-asm-out-no-modifier.stderr

@@ -1,5 +1,5 @@
 error[E0661]: output operand constraint lacks '=' or '+'
-  --> $DIR/llvm-asm-out-no-modifier.rs:22:34
+  --> $DIR/llvm-asm-out-no-modifier.rs:23:34
    |
 LL |         llvm_asm!("mov $1, $0" : "r"(x) : "r"(5));
    |                                  ^^^

src/test/ui/llvm-asm/llvm-asm-out-read-uninit.rs

@@ -3,6 +3,7 @@
 // ignore-powerpc
 // ignore-powerpc64
 // ignore-powerpc64le
+// ignore-riscv64
 // ignore-sparc
 // ignore-sparc64
 // ignore-mips

src/test/ui/llvm-asm/llvm-asm-out-read-uninit.stderr

@@ -1,5 +1,5 @@
 error[E0381]: use of possibly-uninitialized variable: `x`
-  --> $DIR/llvm-asm-out-read-uninit.rs:22:48
+  --> $DIR/llvm-asm-out-read-uninit.rs:23:48
    |
 LL |         llvm_asm!("mov $1, $0" : "=r"(x) : "r"(x));
    |                                                ^ use of possibly-uninitialized `x`

src/test/ui/or-patterns/mismatched-bindings-async-fn.stderr

@@ -1,11 +1,3 @@
-error[E0408]: variable `x` is not bound in all patterns
-  --> $DIR/mismatched-bindings-async-fn.rs:6:17
-   |
-LL | async fn a((x | s): String) {}
-   |             -   ^ pattern doesn't bind `x`
-   |             |
-   |             variable not in all patterns
-
 error[E0408]: variable `s` is not bound in all patterns
   --> $DIR/mismatched-bindings-async-fn.rs:6:13
    |
@@ -15,12 +7,12 @@ LL | async fn a((x | s): String) {}
    |             pattern doesn't bind `s`
 
 error[E0408]: variable `x` is not bound in all patterns
-  --> $DIR/mismatched-bindings-async-fn.rs:11:13
+  --> $DIR/mismatched-bindings-async-fn.rs:6:17
    |
-LL |     let x | s = String::new();
-   |         -   ^ pattern doesn't bind `x`
-   |         |
-   |         variable not in all patterns
+LL | async fn a((x | s): String) {}
+   |             -   ^ pattern doesn't bind `x`
+   |             |
+   |             variable not in all patterns
 
 error[E0408]: variable `s` is not bound in all patterns
   --> $DIR/mismatched-bindings-async-fn.rs:11:9
@@ -30,6 +22,14 @@ LL |     let x | s = String::new();
    |         |
    |         pattern doesn't bind `s`
 
+error[E0408]: variable `x` is not bound in all patterns
+  --> $DIR/mismatched-bindings-async-fn.rs:11:13
+   |
+LL |     let x | s = String::new();
+   |         -   ^ pattern doesn't bind `x`
+   |         |
+   |         variable not in all patterns
+
 error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0408`.

src/test/ui/span/issue-39698.stderr

@@ -8,16 +8,6 @@ LL |         T::T1(a, d) | T::T2(d, b) | T::T3(c) | T::T4(a) => { println!("{:?}
    |               |       pattern doesn't bind `a`
    |               variable not in all patterns
 
-error[E0408]: variable `d` is not bound in all patterns
-  --> $DIR/issue-39698.rs:10:37
-   |
-LL |         T::T1(a, d) | T::T2(d, b) | T::T3(c) | T::T4(a) => { println!("{:?}", a); }
-   |                  -          -       ^^^^^^^^   ^^^^^^^^ pattern doesn't bind `d`
-   |                  |          |       |
-   |                  |          |       pattern doesn't bind `d`
-   |                  |          variable not in all patterns
-   |                  variable not in all patterns
-
 error[E0408]: variable `b` is not bound in all patterns
   --> $DIR/issue-39698.rs:10:9
    |
@@ -38,6 +28,16 @@ LL |         T::T1(a, d) | T::T2(d, b) | T::T3(c) | T::T4(a) => { println!("{:?}
    |         |             pattern doesn't bind `c`
    |         pattern doesn't bind `c`
 
+error[E0408]: variable `d` is not bound in all patterns
+  --> $DIR/issue-39698.rs:10:37
+   |
+LL |         T::T1(a, d) | T::T2(d, b) | T::T3(c) | T::T4(a) => { println!("{:?}", a); }
+   |                  -          -       ^^^^^^^^   ^^^^^^^^ pattern doesn't bind `d`
+   |                  |          |       |
+   |                  |          |       pattern doesn't bind `d`
+   |                  |          variable not in all patterns
+   |                  variable not in all patterns
+
 error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0408`.