merge revision(s) 56561: [Backport #12893]
* cont.c (cont_new): disable optimization if clang's version is 3.8.0. [ruby-core:77894] [Bug #12893]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@56730 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 56561: [Backport #12893]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@56730 b2dd03c8-39d4-4d8f-98ff-823fe69b080e