gcc/testsuite/gcc.dg/Wunused-var-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wunused" } */
   3
   4 int
   5 f1 (void)
   6 {
   7   int a;
   8   int foo (void)
   9   {
  10     return a;
  11   }
  12   a = 1;
  13   return foo ();
  14 }
  15
  16 void
  17 f2 (void)
  18 {
  19   int a;        /* { dg-warning "set but not used" } */
  20   void foo (void)
  21   {
  22     a = 2;
  23   }
  24   a = 1;
  25   foo ();
  26 }