https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112510
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |jakub at gcc dot gnu.org
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't reproduce, neither with GCC 12 nor current trunk.
In the ASAN_OPTIONS=detect_stack_use_after_return=1 case, the stack frames are
allocated by __asan_stack_malloc_4, but that seems to return enough aligned
frames for me (eventhough the routine doesn't have an argument to request a
particular alignment).
Even tried
struct __attribute__((aligned (64))) S { char buf[64]; };
__attribute__((noinline, noclone, noipa)) void
bar (struct S *p, char *a)
{
if ((__UINTPTR_TYPE__)p % 64)
__builtin_abort ();
}
__attribute__((noinline, noclone, noipa)) void
foo (void)
{
struct S s;
char a;
bar (&s, &a);
}
int
main ()
{
for (int i = 0; i < 32; ++i)
foo ();
}
and the frames were sufficiently aligned in all 32 cases.
