1  typedef struct {
       2    char y;
       3    char x[32];
       4  } X;
       5  
       6  int z (void)
       7  {
       8    X xxx;
       9    xxx.x[0] =
      10    xxx.x[31] = '0';
      11    xxx.y = 0xf;
      12    return f (xxx, xxx);
      13  }
      14  
      15  int main (void)
      16  {
      17    int val;
      18  
      19    val = z ();
      20    if (val != 0x60)
      21      abort ();
      22    exit (0);
      23  }
      24  
      25  int f(X x, X y)
      26  {
      27    if (x.y != y.y)
      28      return 'F';
      29  
      30    return x.x[0] + y.x[0];
      31  }