From 72293b69f8a6bd087bdccb9b0ccfec2e1d6af430 Mon Sep 17 00:00:00 2001
From: ko1 <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 25 Jul 2013 07:19:59 +0000
Subject: * encoding.c (check_encoding): Check T_DATA or not.  
 is_data_encoding(obj) assumes that `obj' is T_DATA.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42162 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 encoding.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'encoding.c')

diff --git a/encoding.c b/encoding.c
index aaaf0b8a67..5be529ba31 100644
--- a/encoding.c
+++ b/encoding.c
@@ -121,7 +121,7 @@ check_encoding(rb_encoding *enc)
 static int
 enc_check_encoding(VALUE obj)
 {
-    if (!is_data_encoding(obj)) {
+    if (!RB_TYPE_P(obj, T_DATA) || !is_data_encoding(obj)) {
 	return -1;
     }
     return check_encoding(RDATA(obj)->data);
-- 
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