1  /* { dg-do run } */
       2  
       3  extern void abort (void);
       4  
       5  int a, b; 
       6  
       7  int main ()
       8  {
       9    int t[2] = {1,1};
      10  
      11    for (a = 0; a < 2; a++)
      12      {
      13        b ^= t[a];
      14        t[a] = t[1] = 0;
      15      }
      16  
      17    if (b != 1)
      18      abort ();
      19  
      20    return 0;
      21  }