[Bug #6540]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36185 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
[Bug #6540]
missing test for [Bug #6540]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36185 b2dd03c8-39d4-4d8f-98ff-823fe69b080e