gcc/testsuite/gcc.dg/tree-ssa/foldstring-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-useless" } */
   3
   4 void
   5 arf ()
   6 {
   7   if (""[0] == 0)
   8     blah ();
   9 }
  10 /* { dg-final { scan-tree-dump-times "= 0;" 1 "useless"} } */
  11 /* { dg-final { cleanup-tree-dump "useless" } } */