hidden objects should not be pushed.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63687 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
hidden objects should not be pushed.
to a VM value stack. Add assertion for it.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63687 b2dd03c8-39d4-4d8f-98ff-823fe69b080e