[Bug middle-end/115132] Sibling calls optim should not be performed when builtin_unwind_init is used

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115132

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
You can do the following as workaround:

void __attribute__((optimize("no-optimize-sibling-calls"))) foo (void)
{
  __builtin_unwind_init ();
  gc ();
}