Patch by: Chris Tweedie <cltweedie@gmail.com> (@cltweedie)
Signed-off-by: Akira Matsuda <ronnie@dio.jp>

closes #1074

[ci skip]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56680 b2dd03c8-39d4-4d8f-98ff-823fe69b080e