I re-committed as r33285 because * Ruby should not keep it platform dependent with default compile flags [ruby-core:39566], [ruby-core:28212] * this commit has corresponding test [rubyspec:a9525edcd] Before reverting a commit, please give an example of a problem it can cause or provide a failing test. It a commit doesn't address all the possible scenarios, please re-open the issue so additional patches can be made.