1  /* PR tree-optimization/78675 */
       2  
       3  long int a;
       4  
       5  __attribute__((noinline, noclone)) long int
       6  foo (long int x)
       7  {
       8    long int b;
       9    while (a < 1)
      10      {
      11        b = a && x;
      12        ++a;
      13      }
      14    return b;
      15  }
      16  
      17  int
      18  main ()
      19  {
      20    if (foo (0) != 0)
      21      __builtin_abort ();
      22    a = 0;
      23    if (foo (1) != 0)
      24      __builtin_abort ();
      25    a = 0;
      26    if (foo (25) != 0)
      27      __builtin_abort ();
      28    a = -64;
      29    if (foo (0) != 0)
      30      __builtin_abort ();
      31    a = -64;
      32    if (foo (1) != 0)
      33      __builtin_abort ();
      34    a = -64;
      35    if (foo (25) != 0)
      36      __builtin_abort ();
      37    return 0;
      38  }