From 1f29e8e2baa548bba9e385ebbade2198b4cc3859 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 21 Feb 2014 11:42:03 +0000
Subject: class.c: do nothing if copying self

* class.c (rb_mod_init_copy): do nothing if copying self.
  [ruby-dev:47989] [Bug #9535]
* hash.c (rb_hash_initialize_copy): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45076 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 hash.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'hash.c')

diff --git a/hash.c b/hash.c
index 87438dfbf8..ccc0d448f1 100644
--- a/hash.c
+++ b/hash.c
@@ -1403,6 +1403,8 @@ rb_hash_initialize_copy(VALUE hash, VALUE hash2)
 
     Check_Type(hash2, T_HASH);
 
+    if (hash == hash2) return hash;
+
     ntbl = RHASH(hash)->ntbl;
     if (RHASH(hash2)->ntbl) {
 	if (ntbl) st_free_table(ntbl);
-- 
cgit v1.2.3