merge revision(s) 34555: [Backport #5786]
* compile.c (defined_expr): guard the whole expression. [ruby-dev:45021][Bug#5786]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34607 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 34555: [Backport #5786]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34607 b2dd03c8-39d4-4d8f-98ff-823fe69b080e