safe.c: ruby_safe_level_4_warning
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42080 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
safe.c: ruby_safe_level_4_warning
libraries. [Bug #8652]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42080 b2dd03c8-39d4-4d8f-98ff-823fe69b080e