1  /* PR tree-optimization/61725 */
       2  
       3  int
       4  main ()
       5  {
       6    int x;
       7    for (x = -128; x <= 128; x++)
       8      {
       9        int a = __builtin_ffs (x);
      10        if (x == 0 && a != 0)
      11          __builtin_abort ();
      12      }
      13    return 0;
      14  }