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