1  /* { dg-do compile } */
       2  /* { dg-options "-std=gnu89" } */
       3  
       4  int
       5  mandel(double _Complex C)
       6  {
       7    int py;
       8    C = (__extension__ 1.0iF) * (double)py;
       9    return cabs(C);  /* { dg-warning "incompatible" } */
      10  }
      11