1  /* { dg-do run } */
       2  /* { dg-options "-O2 -fwrapv" } */
       3  
       4  extern void abort (void);
       5  extern void exit (int);
       6  
       7  int
       8  main (void)
       9  {
      10    struct { int count: 2; } s = { -2 };
      11    while (s.count-- != -2)
      12      abort ();
      13    exit (0);
      14  }