fix the case High Sierra's mincore(2) may return -128 [Bug #13895]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59893 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
fix the case High Sierra's mincore(2) may return -128 [Bug #13895]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59893 b2dd03c8-39d4-4d8f-98ff-823fe69b080e