From 0c53b44629cf67fd5697b18df57af0e6ac45002b Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 1 Jun 2017 07:46:22 +0000
Subject: vm_eval.c: fix for rb_check_funcall_default

* vm_eval.c (check_funcall_missing): basic_obj_respond_to_missing
  returns Qundef if respond_to_missing is not redefined.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58984 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 vm_eval.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vm_eval.c b/vm_eval.c
index 86541cc845..1879a8a811 100644
--- a/vm_eval.c
+++ b/vm_eval.c
@@ -404,7 +404,7 @@ check_funcall_missing(rb_thread_t *th, VALUE klass, VALUE recv, ID mid, int argc
 
     ret = basic_obj_respond_to_missing(th, klass, recv,
 				       ID2SYM(mid), PRIV);
-    if (!RTEST(ret)) return def;
+    if (!RTEST(ret) || ret == Qundef) return def;
     args.respond = respond > 0;
     args.respond_to_missing = (ret != Qundef);
     ret = def;
-- 
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