From 752ca514f6e3d9435a8af345fa2481e733a5ddca Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Fri, 11 Nov 2016 22:51:48 +0900
Subject: do not dump_node if parser failed

---
 mrbgems/mruby-compiler/core/parse.y | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index b23016bd3..90b8812b9 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -5479,7 +5479,10 @@ mrb_parser_parse(parser_state *p, mrbc_context *c)
     p->lex_strterm = NULL;
 
     parser_init_cxt(p, c);
-    yyparse(p);
+    if (yyparse(p) != 0 || p->nerr > 0) {
+      p->tree = 0;
+      return;
+    }
     if (!p->tree) {
       p->tree = new_nil(p);
     }
-- 
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