From 38e722f741c628bd6dbfbd74c8e191beeb460203 Mon Sep 17 00:00:00 2001
From: nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 15 Aug 2016 19:47:39 +0000
Subject: merge revision(s) 55410: [Backport #12488]

	* ext/date/date_strftime.c (date_strftime_with_tmx): reject too
	  large precision to get rid of buffer overflow.
	  reported by Guido Vranken <guido AT guidovranken.nl>.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55910 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/date/test_date_strftime.rb | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'test')

diff --git a/test/date/test_date_strftime.rb b/test/date/test_date_strftime.rb
index 7472a4323d..1c0f9b11b4 100644
--- a/test/date/test_date_strftime.rb
+++ b/test/date/test_date_strftime.rb
@@ -420,4 +420,12 @@ class TestDateStrftime < Test::Unit::TestCase
 
   end
 
+  def test_overflow
+    assert_raise(ArgumentError, Errno::ERANGE) {
+      Date.new(2000,1,1).strftime("%2147483647c")
+    }
+    assert_raise(ArgumentError, Errno::ERANGE) {
+      DateTime.new(2000,1,1).strftime("%2147483647c")
+    }
+  end
 end
-- 
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