* parse.y (regexp): regexp literal at the top of dstr is still needed even if it is empty.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24311 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/parse.y b/parse.y
index 10ac878749..fbbad25fb8 100644
--- a/parse.y
+++ b/parse.y
@@ -3831,7 +3831,7 @@ regexp		: tREGEXP_BEG xstring_contents tREGEXP_END
 			    }
 			    break;
 			  default:
-			    node = NEW_NODE(NODE_DSTR, Qnil, 1, NEW_LIST(node));
+			    node = NEW_NODE(NODE_DSTR, STR_NEW0(), 1, NEW_LIST(node));
 			  case NODE_DSTR:
 			    if (options & RE_OPTION_ONCE) {
 				nd_set_type(node, NODE_DREGX_ONCE);