1 /* Test warning for comparison non-null address with null pointer constant. */
2 /* Origin: Pawel Sikora <pluto@agmk.net> */
3 /* { dg-do compile } */
4 /* { dg-options "-Waddress" } */
5 extern void z();
6
f()7 void f() { if ( z ) z(); } /* { dg-warning "always evaluate as" } */
g()8 void g() { if ( z != 0 ) z(); } /* { dg-warning "the comparison will always evaluate as 'true'" } */
h()9 void h() { if ( z != (void*)0 ) z(); } /* { dg-warning "the comparison will always evaluate as 'true'" } */
10