[Bug tree-optimization/116224] wrong code with _BitInt() division at -O1 and above (breaks in ccp2?)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116224

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This needs to be
signed char g;

int
foo (signed char c, int i, _BitInt(65) b)
{
  __builtin_memmove (&g, &b, 1);
  return b / i / c;
}

int
main ()
{
  int x = foo (-15, -15, 900);
  if (x != 4)
    __builtin_abort ();
}

because you are relying on the char being signed.