This probably should have been `#bar` on the instance of class `Undef2` all along
[Fix GH-2015]
From: Alex Snaps <alex.snaps@gmail.com>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65757 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
When you change this to true, you may need to add more tests.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53141 b2dd03c8-39d4-4d8f-98ff-823fe69b080e