parse.y: args tail at error

* parse.y (new_args_tail_gen): abandon parsing arguments after
  error.  reported by ilsani Martino Sani (ilsani) at
  https://hackerone.com/reports/221201

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58466 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/parse.y b/parse.y
index 11cab865a2..86486ac38a 100644
--- a/parse.y
+++ b/parse.y
@@ -9965,6 +9965,7 @@ new_args_tail_gen(struct parser_params *parser, NODE *k, ID kr, ID b)
 
     args = ZALLOC(struct rb_args_info);
     node = NEW_NODE(NODE_ARGS, 0, 0, args);
+    if (parser->error_p) return node;
 
     args->block_arg      = b;
     args->kw_args        = k;