1  /* PR c/35430 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-Wsign-compare" } */
       4  
       5  void
       6  foo (__complex__ int i)
       7  {
       8    i == 0u;
       9    i == ~1u;	/* { dg-warning "comparison of integer expressions of different signedness" } */
      10  }