Ignore coverage test for gcc backend

Author: GuillaumeGomez

tests/coverage/abort.rs

@@ -37,6 +37,7 @@ fn main() -> Result<(), u8> {
 //      intended"). Coverage results would show no executed coverage regions.
 //   6. If `should_abort` is `true` and the program aborts, the program exits with a `132` status
 //      (on Linux at least).
+//@ ignore-backends: gcc
 
 /*
 

tests/coverage/assert-ne.rs

@@ -1,4 +1,5 @@
 //@ edition: 2021
+//@ ignore-backends: gcc
 
 use core::hint::black_box;
 

tests/coverage/assert.rs

@@ -1,5 +1,6 @@
 #![allow(unused_assignments)]
 //@ failure-status: 101
+//@ ignore-backends: gcc
 
 fn might_fail_assert(one_plus_one: u32) {
     println!("does 1 + 1 = {}?", one_plus_one);

tests/coverage/assert_not.rs

@@ -1,4 +1,5 @@
 //@ edition: 2021
+//@ ignore-backends: gcc
 
 // Regression test for <https://github.com/rust-lang/rust/issues/118904>.
 // `assert!(true)` and `assert!(!false)` should have similar coverage spans.

tests/coverage/async.rs

@@ -6,6 +6,7 @@
 //@ compile-flags: -Copt-level=1
 
 //@ aux-build: executor.rs
+//@ ignore-backends: gcc
 extern crate executor;
 
 async fn c(x: u8) -> u8 {

tests/coverage/async2.rs

@@ -2,6 +2,7 @@
 //@ edition: 2018
 
 //@ aux-build: executor.rs
+//@ ignore-backends: gcc
 extern crate executor;
 
 fn non_async_func() {

tests/coverage/async_block.rs

@@ -2,6 +2,7 @@
 //@ edition: 2021
 
 //@ aux-build: executor.rs
+//@ ignore-backends: gcc
 extern crate executor;
 
 fn main() {

tests/coverage/async_closure.rs

@@ -1,6 +1,7 @@
 //@ edition: 2021
 
 //@ aux-build: executor.rs
+//@ ignore-backends: gcc
 extern crate executor;
 
 async fn call_once(f: impl AsyncFnOnce()) {

tests/coverage/attr/impl.rs

@@ -1,6 +1,7 @@
 #![feature(coverage_attribute)]
 //@ edition: 2021
 //@ reference: attributes.coverage.nesting
+//@ ignore-backends: gcc
 
 // Checks that `#[coverage(..)]` can be applied to impl and impl-trait blocks,
 // and is inherited by any enclosed functions.

tests/coverage/attr/module.rs

@@ -1,6 +1,7 @@
 #![feature(coverage_attribute)]
 //@ edition: 2021
 //@ reference: attributes.coverage.nesting
+//@ ignore-backends: gcc
 
 // Checks that `#[coverage(..)]` can be applied to modules, and is inherited
 // by any enclosed functions.