gcc/testsuite/gcc.dg/Werror-9.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wattributes" } */
   3
   4 /* Make sure #pragma can enable a warning as an error.  */
   5
   6 #pragma GCC diagnostic error "-Walways-true"
   7
   8 void __attribute__((dj)) bar() { }      /* { dg-warning "warning: .* attribute directive ignored" } */
   9
  10 int i;
  11
  12 void
  13 foo ()
  14 {
  15   if (&i)       /* { dg-error "error: .* will always evaluate as 'true'" } */
  16     grill ();
  17 }