[Bug tree-optimization/71691] [6/7 Regression] wrong code at -O3 in both 32-bit and 64-bit modes on x86_64-linux-gnu (Floating point exception)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71691

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That said,
char b;
short f;
unsigned e;
int g = 20;

void
foo ()
{
  int l, h;
  for (l = 0; l <= 7; l++)
    {
      int j = 38;
      if (g)
        h = 0;
      for (; h <= 7; h++)
        {
          int i, k = b % (j % 4);
          g = f;
          for (;;)
            {
              j = 6 || b;
              if (e)
                {
                  for (; j; --j)
                    if (k)
                      __builtin_printf ("%d", 9);
                  if (i)
                    __builtin_printf ("%d", j);
                }
              if (l)
                continue;
              break;
            }
          i = f || b;
        }
    }
}

int
main ()
{
  foo ();
  return 0;
}

(just moving the int h; declaration before the outermost loop) is IMHO already
valid, and still SIGFPEs.