erb.rb: safe concurrent use
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37594 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
erb.rb: safe concurrent use
safe concurrent use. [ruby-core:47638] [Bug #7046]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37594 b2dd03c8-39d4-4d8f-98ff-823fe69b080e