rust-lang · bors · Jul 26, 2025 · Jul 23, 2025 · Jul 23, 2025 · RalfJung
diff --git a/src/tools/compiletest/src/directives/cfg.rs b/src/tools/compiletest/src/directives/cfg.rs
@@ -285,6 +285,11 @@ fn parse_cfg_name_directive<'a>(
         if name == "gdb-version" {
             outcome = MatchOutcome::External;
         }
+
+        // Don't error out for ignore-backends,as it is handled elsewhere.
+        if name == "backends" {
+            outcome = MatchOutcome::External;
+        }
     }
 
     ParsedNameDirective {

diff --git a/tests/ui/allocator/no_std-alloc-error-handler-custom.rs b/tests/ui/allocator/no_std-alloc-error-handler-custom.rs
@@ -2,6 +2,7 @@
 //@ ignore-android no libc
 //@ ignore-emscripten no libc
 //@ ignore-sgx no libc
+//@ ignore-backends: gcc
 //@ only-linux
 //@ compile-flags:-C panic=abort
 //@ aux-build:helper.rs

diff --git a/tests/ui/allocator/no_std-alloc-error-handler-default.rs b/tests/ui/allocator/no_std-alloc-error-handler-default.rs
@@ -2,6 +2,7 @@
 //@ ignore-android no libc
 //@ ignore-emscripten no libc
 //@ ignore-sgx no libc
+//@ ignore-backends: gcc
 //@ only-linux
 //@ compile-flags:-C panic=abort
 //@ aux-build:helper.rs

diff --git a/tests/ui/asm/may_unwind.rs b/tests/ui/asm/may_unwind.rs
@@ -1,6 +1,7 @@
 //@ run-pass
 //@ needs-asm-support
 //@ needs-unwind
+//@ ignore-backends: gcc
 
 #![feature(asm_unwind)]
 

diff --git a/tests/ui/asm/x86_64/may_unwind.rs b/tests/ui/asm/x86_64/may_unwind.rs
@@ -2,6 +2,7 @@
 //@ run-pass
 //@ needs-asm-support
 //@ needs-unwind
+//@ ignore-backends: gcc
 
 #![feature(asm_unwind)]
 

diff --git a/tests/ui/async-await/deep-futures-are-freeze.rs b/tests/ui/async-await/deep-futures-are-freeze.rs
@@ -1,3 +1,4 @@
+//@ ignore-backends: gcc
 //@ build-pass
 //@ compile-flags: -Copt-level=s -Clto=fat
 //@ no-prefer-dynamic

diff --git a/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.rs b/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.rs
@@ -1,3 +1,4 @@
+//@ ignore-backends: gcc
 //@ edition: 2021
 //@ known-bug: #108309
 

diff --git a/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.stderr b/tests/ui/async-await/in-trait/dont-project-to-specializable-projection.stderr
@@ -1,27 +1,27 @@
 error[E0053]: method `foo` has an incompatible type for trait
-  --> $DIR/dont-project-to-specializable-projection.rs:13:5
+  --> $DIR/dont-project-to-specializable-projection.rs:14:5
    |
 LL |     default async fn foo(_: T) -> &'static str {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected associated type, found future
    |
 note: type in trait
-  --> $DIR/dont-project-to-specializable-projection.rs:9:5
+  --> $DIR/dont-project-to-specializable-projection.rs:10:5
    |
 LL |     async fn foo(_: T) -> &'static str;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = note: expected signature `fn(_) -> impl Future<Output = &'static str>`
               found signature `fn(_) -> impl Future<Output = &'static str>`
 
 error: async associated function in trait cannot be specialized
-  --> $DIR/dont-project-to-specializable-projection.rs:13:5
+  --> $DIR/dont-project-to-specializable-projection.rs:14:5
    |
 LL |     default async fn foo(_: T) -> &'static str {
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: specialization behaves in inconsistent and surprising ways with async functions in traits, and for now is disallowed
 
 error[E0599]: no method named `poll` found for struct `Pin<&mut impl Future<Output = ()>>` in the current scope
-  --> $DIR/dont-project-to-specializable-projection.rs:48:28
+  --> $DIR/dont-project-to-specializable-projection.rs:49:28
    |
 LL |         match fut.as_mut().poll(ctx) {
    |                            ^^^^ method not found in `Pin<&mut impl Future<Output = ()>>`

diff --git a/tests/ui/backtrace/dylib-dep.rs b/tests/ui/backtrace/dylib-dep.rs
@@ -8,6 +8,7 @@
 //@ ignore-fuchsia Backtraces not symbolized
 //@ ignore-musl musl doesn't support dynamic libraries (at least when the original test was written).
 //@ needs-unwind
+//@ ignore-backends: gcc
 //@ compile-flags: -g -Copt-level=0 -Cstrip=none -Cforce-frame-pointers=yes
 //@ ignore-emscripten Requires custom symbolization code
 //@ aux-crate: dylib_dep_helper=dylib-dep-helper.rs

diff --git a/tests/ui/cfg/cfg-panic-abort.rs b/tests/ui/cfg/cfg-panic-abort.rs
@@ -1,6 +1,7 @@
 //@ build-pass
 //@ compile-flags: -C panic=abort
 //@ no-prefer-dynamic
+//@ ignore-backends: gcc
 
 #[cfg(panic = "unwind")]
 pub fn bad() -> i32 { }

diff --git a/tests/ui/codegen/StackColoring-not-blowup-stack-issue-40883.rs b/tests/ui/codegen/StackColoring-not-blowup-stack-issue-40883.rs
@@ -1,4 +1,6 @@
 //@ run-pass
+//@ ignore-backends: gcc
+
 #![allow(dead_code)]
 // check that we don't have linear stack usage with multiple calls to `push`
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/as-cast/inline1.rs b/tests/ui/codegen/equal-pointers-unequal/as-cast/inline1.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Based on https://github.com/rust-lang/rust/issues/107975#issuecomment-1432161340
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/as-cast/inline2.rs b/tests/ui/codegen/equal-pointers-unequal/as-cast/inline2.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Based on https://github.com/rust-lang/rust/issues/107975#issuecomment-1432161340
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/as-cast/segfault.rs b/tests/ui/codegen/equal-pointers-unequal/as-cast/segfault.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // https://github.com/rust-lang/rust/issues/107975#issuecomment-1431758601
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/as-cast/zero.rs b/tests/ui/codegen/equal-pointers-unequal/as-cast/zero.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Derived from https://github.com/rust-lang/rust/issues/107975#issuecomment-1431758601
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/inline1.rs b/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/inline1.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Based on https://github.com/rust-lang/rust/issues/107975#issuecomment-1432161340
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/inline2.rs b/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/inline2.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Based on https://github.com/rust-lang/rust/issues/107975#issuecomment-1432161340
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/segfault.rs b/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/segfault.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // https://github.com/rust-lang/rust/issues/107975#issuecomment-1431758601
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/zero.rs b/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/zero.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Derived from https://github.com/rust-lang/rust/issues/107975#issuecomment-1431758601
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/strict-provenance/inline1.rs b/tests/ui/codegen/equal-pointers-unequal/strict-provenance/inline1.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Based on https://github.com/rust-lang/rust/issues/107975#issuecomment-1432161340
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/strict-provenance/inline2.rs b/tests/ui/codegen/equal-pointers-unequal/strict-provenance/inline2.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Based on https://github.com/rust-lang/rust/issues/107975#issuecomment-1432161340
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/strict-provenance/segfault.rs b/tests/ui/codegen/equal-pointers-unequal/strict-provenance/segfault.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // https://github.com/rust-lang/rust/issues/107975#issuecomment-1431758601
 

diff --git a/tests/ui/codegen/equal-pointers-unequal/strict-provenance/zero.rs b/tests/ui/codegen/equal-pointers-unequal/strict-provenance/zero.rs
@@ -1,6 +1,7 @@
 //@ known-bug: #107975
 //@ compile-flags: -Copt-level=2
 //@ run-pass
+//@ ignore-backends: gcc
 
 // Derived from https://github.com/rust-lang/rust/issues/107975#issuecomment-1431758601
 

diff --git a/tests/ui/consts/const-eval/parse_ints.rs b/tests/ui/consts/const-eval/parse_ints.rs
@@ -1,3 +1,5 @@
+//@ ignore-backends: gcc
+
 const _OK: () = match i32::from_str_radix("-1234", 10) {
     Ok(x) => assert!(x == -1234),
     Err(_) => panic!(),

diff --git a/tests/ui/consts/const-eval/parse_ints.stderr b/tests/ui/consts/const-eval/parse_ints.stderr
@@ -1,5 +1,5 @@
 error[E0080]: evaluation panicked: from_ascii_radix: radix must lie in the range `[2, 36]`
-  --> $DIR/parse_ints.rs:5:24
+  --> $DIR/parse_ints.rs:7:24
    |
 LL | const _TOO_LOW: () = { u64::from_str_radix("12345ABCD", 1); };
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `_TOO_LOW` failed inside this call
@@ -11,7 +11,7 @@ note: inside `core::num::<impl u64>::from_ascii_radix`
    = note: this error originates in the macro `from_str_int_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error[E0080]: evaluation panicked: from_ascii_radix: radix must lie in the range `[2, 36]`
-  --> $DIR/parse_ints.rs:6:25
+  --> $DIR/parse_ints.rs:8:25
    |
 LL | const _TOO_HIGH: () = { u64::from_str_radix("12345ABCD", 37); };
    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `_TOO_HIGH` failed inside this call

diff --git a/tests/ui/consts/const_cmp_type_id.rs b/tests/ui/consts/const_cmp_type_id.rs
@@ -1,3 +1,4 @@
+//@ ignore-backends: gcc
 //@ compile-flags: -Znext-solver
 #![feature(const_type_id, const_trait_impl, const_cmp)]
 

diff --git a/tests/ui/consts/const_cmp_type_id.stderr b/tests/ui/consts/const_cmp_type_id.stderr
@@ -1,5 +1,5 @@
 error[E0015]: cannot call non-const operator in constants
-  --> $DIR/const_cmp_type_id.rs:10:18
+  --> $DIR/const_cmp_type_id.rs:11:18
    |
 LL |         let _a = TypeId::of::<u8>() < TypeId::of::<u16>();
    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

diff --git a/tests/ui/consts/issue-73976-monomorphic.rs b/tests/ui/consts/issue-73976-monomorphic.rs
@@ -1,3 +1,4 @@
+//@ ignore-backends: gcc
 //@ check-pass
 //
 // This test is complement to the test in issue-73976-polymorphic.rs.

diff --git a/tests/ui/consts/issue-94675.rs b/tests/ui/consts/issue-94675.rs
@@ -1,3 +1,5 @@
+//@ ignore-backends: gcc
+
 #![feature(const_trait_impl)]
 
 struct Foo<'a> {

diff --git a/tests/ui/consts/issue-94675.stderr b/tests/ui/consts/issue-94675.stderr
@@ -1,17 +1,17 @@
 error[E0277]: the trait bound `Vec<usize>: [const] Index<_>` is not satisfied
-  --> $DIR/issue-94675.rs:9:9
+  --> $DIR/issue-94675.rs:11:9
    |
 LL |         self.bar[0] = baz.len();
    |         ^^^^^^^^^^^
 
 error[E0277]: the trait bound `Vec<usize>: [const] IndexMut<usize>` is not satisfied
-  --> $DIR/issue-94675.rs:9:9
+  --> $DIR/issue-94675.rs:11:9
    |
 LL |         self.bar[0] = baz.len();
    |         ^^^^^^^^^^^
 
 error[E0277]: the trait bound `Vec<usize>: [const] Index<usize>` is not satisfied
-  --> $DIR/issue-94675.rs:9:9
+  --> $DIR/issue-94675.rs:11:9
    |
 LL |         self.bar[0] = baz.len();
    |         ^^^^^^^^^^^

diff --git a/tests/ui/consts/issue-miri-1910.rs b/tests/ui/consts/issue-miri-1910.rs
@@ -1,3 +1,4 @@
+//@ ignore-backends: gcc
 //@ error-pattern unable to turn pointer into raw bytes
 //@ normalize-stderr: "alloc[0-9]+\+0x[a-z0-9]+" -> "ALLOC"
 

diff --git a/tests/ui/consts/issue-miri-1910.stderr b/tests/ui/consts/issue-miri-1910.stderr
@@ -1,5 +1,5 @@
 error[E0080]: unable to turn pointer into integer
-  --> $DIR/issue-miri-1910.rs:7:5
+  --> $DIR/issue-miri-1910.rs:8:5
    |
 LL |     (&foo as *const _ as *const u8).add(one_and_a_half_pointers).read();
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ evaluation of `C` failed here

diff --git a/tests/ui/consts/missing_span_in_backtrace.rs b/tests/ui/consts/missing_span_in_backtrace.rs
@@ -1,3 +1,4 @@
+//@ ignore-backends: gcc
 //@ compile-flags: -Z ui-testing=no
 
 use std::{

diff --git a/tests/ui/consts/missing_span_in_backtrace.stderr b/tests/ui/consts/missing_span_in_backtrace.stderr
@@ -1,11 +1,11 @@
 error[E0080]: unable to copy parts of a pointer from memory at ALLOC0
-  --> $DIR/missing_span_in_backtrace.rs:14:9
+  --> $DIR/missing_span_in_backtrace.rs:15:9
    |
-14 | /         ptr::swap_nonoverlapping(
-15 | |             &mut ptr1 as *mut _ as *mut MaybeUninit<u8>,
-16 | |             &mut ptr2 as *mut _ as *mut MaybeUninit<u8>,
-17 | |             mem::size_of::<&i32>(),
-18 | |         );
+15 | /         ptr::swap_nonoverlapping(
+16 | |             &mut ptr1 as *mut _ as *mut MaybeUninit<u8>,
+17 | |             &mut ptr2 as *mut _ as *mut MaybeUninit<u8>,
+18 | |             mem::size_of::<&i32>(),
+19 | |         );
    | |_________^ evaluation of `X` failed inside this call
    |
    = help: this code performed an operation that depends on the underlying bytes representing a pointer

diff --git a/tests/ui/consts/try-operator.rs b/tests/ui/consts/try-operator.rs
@@ -1,3 +1,4 @@
+//@ ignore-backends: gcc
 //@ run-pass
 
 #![feature(try_trait_v2)]

diff --git a/tests/ui/coroutine/panic-drops-resume.rs b/tests/ui/coroutine/panic-drops-resume.rs
@@ -2,6 +2,7 @@
 
 //@ run-pass
 //@ needs-unwind
+//@ ignore-backends: gcc
 
 #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
 

diff --git a/tests/ui/coroutine/panic-drops.rs b/tests/ui/coroutine/panic-drops.rs
@@ -1,5 +1,6 @@
 //@ run-pass
 //@ needs-unwind
+//@ ignore-backends: gcc
 
 #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
 

diff --git a/tests/ui/coroutine/panic-safe.rs b/tests/ui/coroutine/panic-safe.rs
@@ -1,6 +1,6 @@
 //@ run-pass
 //@ needs-unwind
-
+//@ ignore-backends: gcc
 
 #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
 

diff --git a/tests/ui/coroutine/resume-after-return.rs b/tests/ui/coroutine/resume-after-return.rs
@@ -1,3 +1,4 @@
+//@ ignore-backends: gcc
 //@ run-pass
 //@ needs-unwind
 

diff --git a/tests/ui/coroutine/unwind-abort-mix.rs b/tests/ui/coroutine/unwind-abort-mix.rs
@@ -6,6 +6,7 @@
 //@ aux-build:unwind-aux.rs
 //@ compile-flags: -Cpanic=abort
 //@ needs-unwind
+//@ ignore-backends: gcc
 extern crate unwind_aux;
 
 pub fn main() {

diff --git a/tests/ui/delegation/fn-header.rs b/tests/ui/delegation/fn-header.rs
@@ -1,6 +1,7 @@
 //@ check-pass
 //@ edition:2018
 //@ aux-crate:fn_header_aux=fn-header-aux.rs
+//@ ignore-backends: gcc
 
 #![feature(c_variadic)]
 #![feature(fn_delegation)]

diff --git a/tests/ui/drop/dynamic-drop-async.rs b/tests/ui/drop/dynamic-drop-async.rs
@@ -6,6 +6,7 @@
 //@ run-pass
 //@ needs-unwind
 //@ edition:2018
+//@ ignore-backends: gcc
 
 #![allow(unused)]
 

diff --git a/tests/ui/drop/dynamic-drop.rs b/tests/ui/drop/dynamic-drop.rs
@@ -1,5 +1,6 @@
 //@ run-pass
 //@ needs-unwind
+//@ ignore-backends: gcc
 
 #![feature(coroutines, coroutine_trait, stmt_expr_attributes)]
 #![feature(if_let_guard)]

diff --git a/tests/ui/intrinsics/panic-uninitialized-zeroed.rs b/tests/ui/intrinsics/panic-uninitialized-zeroed.rs
@@ -4,6 +4,7 @@
 //@ revisions: default strict
 //@ [strict]compile-flags: -Zstrict-init-checks
 //@ needs-subprocess
+//@ ignore-backends: gcc
 
 #![allow(deprecated, invalid_value)]
 #![feature(never_type)]

diff --git a/tests/ui/issues/issue-14875.rs b/tests/ui/issues/issue-14875.rs
@@ -1,5 +1,6 @@
 //@ run-pass
 //@ needs-unwind
+//@ ignore-backends: gcc
 
 // Check that values are not leaked when a dtor panics (#14875)
 

diff --git a/tests/ui/issues/issue-29948.rs b/tests/ui/issues/issue-29948.rs
@@ -1,5 +1,6 @@
 //@ run-pass
 //@ needs-unwind
+//@ ignore-backends: gcc
 
 use std::panic;
 

diff --git a/tests/ui/iterators/iter-sum-overflow-debug.rs b/tests/ui/iterators/iter-sum-overflow-debug.rs
@@ -1,5 +1,6 @@
 //@ run-pass
 //@ needs-unwind
+//@ ignore-backends: gcc
 //@ compile-flags: -C debug_assertions=yes
 
 use std::panic;