gcc/testsuite/gcc.dg/torture/pr100499-3.c

/* { dg-do run } */

int a = 0;
unsigned char b = 0;

int main() {
  a - 6;
  for (; a >= -13; a = a - 8)
    while((unsigned char)(b-- * 6))
      ;
  if (b != 127)
    __builtin_abort();
  return 0;
}