gcc/testsuite/gcc.dg/20040206-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -W -Wall" } */
   3 /*  PR c/13127
   4     On the tree-ssa this used to warn about an anonymous
   5     uninitialized variable.
   6
   7     The warning about "no return statement in function
   8     returning non-void" is PR 13000. */
   9
  10 static int foo (int a __attribute__((unused)) ) { }
  11 int main (void) { return foo (0); } /* { dg-warning "control may reach end" } */