* parse.y (singleton): get rid of segfault on syntax error.

  fixed: [ruby-core:07070]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9803 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/parse.y b/parse.y
index f3a7a42f51..2b8af2f279 100644
--- a/parse.y
+++ b/parse.y
@@ -4246,7 +4246,7 @@ opt_f_block_arg	: ',' f_block_arg
 singleton	: var_ref
 		    {
 		    /*%%%*/
-			if (nd_type($1) == NODE_SELF) {
+			if ($1 && nd_type($1) == NODE_SELF) {
 			    $$ = NEW_SELF();
 			}
 			else {