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* [Bug c/71613] Useful warnings silenced when macros from system headers are used
[not found] <bug-71613-4@http.gcc.gnu.org/bugzilla/>
@ 2024-05-15 14:49 ` tavianator at gmail dot com
0 siblings, 0 replies; only message in thread
From: tavianator at gmail dot com @ 2024-05-15 14:49 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71613
Tavian Barnes <tavianator at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tavianator at gmail dot com
--- Comment #11 from Tavian Barnes <tavianator at gmail dot com> ---
Mostly commenting to make this searchable in case someone else runs into it:
-Wtsan is also affected by this:
$ cat foo.c
#include <stdatomic.h>
int main(void) {
atomic_thread_fence(memory_order_relaxed);
__atomic_thread_fence(__ATOMIC_RELAXED);
return 0;
}
$ gcc -c -fsanitize=thread foo.c
foo.c: In function ‘main’:
foo.c:5:9: warning: ‘atomic_thread_fence’ is not supported with
‘-fsanitize=thread’ [-Wtsan]
5 | __atomic_thread_fence(__ATOMIC_RELAXED);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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[not found] <bug-71613-4@http.gcc.gnu.org/bugzilla/>
2024-05-15 14:49 ` [Bug c/71613] Useful warnings silenced when macros from system headers are used tavianator at gmail dot com
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