1  struct {
       2    int a:4;
       3    int :4;
       4    int b:4;
       5    int c:4;
       6  } x = { 2,3,4 };
       7  
       8  main ()
       9  {
      10    if (x.a != 2)
      11      abort ();
      12    if (x.b != 3)
      13      abort ();
      14    if (x.c != 4)
      15      abort ();
      16    exit (0);
      17  }