From bcf8dd1096bc3660b2f56b0c70d00c33c79c995d Mon Sep 17 00:00:00 2001
From: marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 6 Apr 2014 17:45:07 +0000
Subject: * lib/matrix: Handle empty diagonal matrix case [fix GH-576]   Patch
 by gogotanaka

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45524 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/matrix.rb | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib/matrix.rb')

diff --git a/lib/matrix.rb b/lib/matrix.rb
index f82ed65979..e0995c394f 100644
--- a/lib/matrix.rb
+++ b/lib/matrix.rb
@@ -204,6 +204,7 @@ class Matrix
   #
   def Matrix.diagonal(*values)
     size = values.size
+    return Matrix.empty if size == 0
     rows = Array.new(size) {|j|
       row = Array.new(size, 0)
       row[j] = values[j]
-- 
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