From 97f07f096843beec98c13063a2d561e017a4ce6b Mon Sep 17 00:00:00 2001
From: kosaki <kosaki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 6 Mar 2011 12:51:17 +0000
Subject: [PATCH] * sample/list.rb (MyElem#initialize): initialize @head  
 explicitely. Otherwise -W2 option makes following warning.   "warning:
 instance variable @head not initialized".   This issue was founded by Andrew
 Grimm. Thanks Andrew!   [ruby-core:35435][Bug#4471]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31032 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog      | 8 ++++++++
 sample/list.rb | 1 +
 2 files changed, 9 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 188122176b..4fad30bd82 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+Sun Mar  6 21:49:04 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* sample/list.rb (MyElem#initialize): initialize @head
+	  explicitely. Otherwise -W2 option makes following warning.
+	  "warning: instance variable @head not initialized".
+	  This issue was founded by Andrew Grimm. Thanks Andrew!
+	  [ruby-core:35435][Bug#4471]
+
 Sun Mar  6 05:21:41 2011  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* class.c: fix camelCase to snake_case in documentation code examples.
diff --git a/sample/list.rb b/sample/list.rb
index 221f7edb16..85899ce7ff 100644
--- a/sample/list.rb
+++ b/sample/list.rb
@@ -5,6 +5,7 @@ class MyElem
     # @variables are instance variable, no declaration needed
     @data = item
     @succ = nil
+    @head = nil
   end
 
   def data