From 217f599a1e1c09618b0ebeffb34be790f70b8c68 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 25 Mar 2017 03:23:43 +0000
Subject: class.c: prohibit refinement module

* class.c (ensure_includable): cannot include refinement
  module, or the type and the class do not match.
  [ruby-core:79632] [Bug #13236]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58083 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 class.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'class.c')

diff --git a/class.c b/class.c
index fc99ce4..d73724b 100644
--- a/class.c
+++ b/class.c
@@ -854,6 +854,9 @@ ensure_includable(VALUE klass, VALUE module)
 {
     rb_frozen_class_p(klass);
     Check_Type(module, T_MODULE);
+    if (!NIL_P(rb_refinement_module_get_refined_class(module))) {
+	rb_raise(rb_eArgError, "refinement module is not allowed");
+    }
     OBJ_INFECT(klass, module);
 }
 
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