1  /* { dg-do compile } */
       2  
       3  typedef int A;
       4  int
       5  fn1 (A x, A y)
       6  {
       7    if ((x + (x - y) * 1i) != -(-x + (y - x) * 1i))
       8      return 1;
       9    return 0;
      10  }