gcc/testsuite/gcc.dg/20031012-1.c

   1 /* Origin: Andrew Morton <akpm@osdl.org> */
   2 /* Warn if a function addres of a non-weak function is used
   3    as a truth value.  */
   4 /* See thread starting at http://gcc.gnu.org/ml/gcc/2003-10/msg00414.html  */
   5
   6 void foo(void)
   7 {}
   8
   9 void bar(void)
  10 {}
  11
  12 int main() {
  13         if (foo) /* { dg-warning "" } */
  14                 bar();
  15         return 0;
  16 }
  17