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
---
 ext/bigdecimal/bigdecimal.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'ext/bigdecimal')

diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index f33dd82..31479d4 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -2494,7 +2494,9 @@ BigDecimal_initialize_copy(VALUE self, VALUE other)
     Real *pv = rb_check_typeddata(self, &BigDecimal_data_type);
     Real *x = rb_check_typeddata(other, &BigDecimal_data_type);
 
-    DATA_PTR(self) = VpCopy(pv, x);
+    if (self != other) {
+	DATA_PTR(self) = VpCopy(pv, x);
+    }
     return self;
 }
 
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