merge revision(s) 42068,42069: [Backport #8654]
Suppress warnings.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@43242 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 42068,42069: [Backport #8654]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@43242 b2dd03c8-39d4-4d8f-98ff-823fe69b080e