gcc/testsuite/gcc.dg/unused-variable-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wunused-variable" } */
   3
   4 static int a = 0;         /* { dg-warning "defined but not used" } */
   5 static const int b = 0;   /* { dg-warning "defined but not used" } */
   6 static int c __attribute__ ((unused)) = 0;
   7 static const char rcsid[] __attribute__ ((unused)) = "version-string";