From 2f8a7edadb2bd79580c0ca249b36451c767205a4 Mon Sep 17 00:00:00 2001
From: Sergey Nartimov <just.lest@gmail.com>
Date: Tue, 3 Jan 2012 23:44:56 +0300
Subject: [PATCH] use correct variant of checking whether class is a singleton

---
 activesupport/lib/active_support/core_ext/class/attribute.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/activesupport/lib/active_support/core_ext/class/attribute.rb b/activesupport/lib/active_support/core_ext/class/attribute.rb
index 45bec264ffb..305ed4964bd 100644
--- a/activesupport/lib/active_support/core_ext/class/attribute.rb
+++ b/activesupport/lib/active_support/core_ext/class/attribute.rb
@@ -110,6 +110,6 @@ class Class
 
   private
   def singleton_class?
-    !name || '' == name
+    ancestors.first != self
   end
 end