1  /* Test warning for ordered comparison pointer with null pointer constant. */
       2  /* Test with -Wextra. */
       3  /* { dg-do compile } */
       4  /* { dg-options "-Wextra" } */
       5  extern void z();
       6  void *p;
       7  
       8  void f() {
       9   if (z >= 0) /* { dg-warning "ordered comparison of pointer with" } */
      10     z();
      11   if (0 >= z) /* { dg-warning "ordered comparison of pointer with" } */
      12      z();
      13   if (p >= (void*)0) /* { dg-warning "ordered comparison of pointer with null pointer" } */
      14      z();
      15   if ((void*)0 >= p) /* { dg-warning "ordered comparison of pointer with null pointer" } */
      16      z();
      17   if (z >= (void*)0) /* { dg-warning "distinct pointer types lacks a cast" } */
      18      z();
      19   if ((void*)0 >=z) /* { dg-warning "distinct pointer types lacks a cast" } */
      20      z();
      21  }