Make the tests darwin only. The bots complaining already output UTF-8 invalid specifiers, test the output as we expect on darwin systems. llvm-svn: 264788
Some buildbots still complain. Followup from r264752 and 264765. llvm-svn: 264784
Followup from r264752. Attempt to appease buildbots: http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/2882 http://lab.llvm.org:8011/builders/clang-s390x-linux/builds/2619 llvm-svn: 264765