Suppress warnings

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39929 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Use more general approach to get scope_id see #8159

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39930 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-03-26

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39931 b2dd03c8-39d4-4d8f-98ff-823fe69b080e