* parse.y (block_append): warn unused lteral.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@3603 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index 5a75485a1..8096d5d57 100644
--- a/parse.y
+++ b/parse.y
@@ -4491,6 +4491,7 @@ block_append(head, tail)
 	goto again;
       case NODE_LIT:
       case NODE_STR:
+	rb_warning("unused literal ignored");
 	return tail;
       default:
 	end = NEW_BLOCK(head);