gcc/testsuite/c-c++-common/Waddress-1.c

   1 /* PR c/69768 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Waddress" } */
   4
   5 static int e;
   6
   7 int
   8 foo ()
   9 {
  10   return "foo1" != (void *) 0   /* { dg-bogus "comparison with string literal results in unspecified behavior" } */
  11     && "foo2" != (const char *) ((void *) 0)    /* { dg-bogus "comparison with string literal results in unspecified behavior" } */
  12     && "foo3" != (const char *) ((void *) (10 - 10))    /* { dg-bogus "comparison with string literal results in unspecified behavior" } */
  13     && "foo4" != (const char *) ((void *) (&e - &e))    /* { dg-warning "15:comparison with string literal results in unspecified behavior" "" { target c } } */
  14     && "foo5" != "foo6";        /* { dg-warning "15:comparison with string literal results in unspecified behavior" } */
  15 }