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

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

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

Alexander Monakov <amonakov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |amonakov at gcc dot gnu.org

--- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Placing an empty asm is sufficient to prevent undesired tailcalls:

void gc ();

void foo (void)
{
  __builtin_unwind_init ();
  gc ();
  asm ("");
}