135339 2014-07-28 10:34:09 -0700 REGRESSION: unknown type name 'qos_class_t' in iOS 8.0 beta 4 2014-07-31 09:47:45 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED INVALID P2 Normal --- 1 isaacburns webkit-unassigned ap oldest_to_newest 1025144 0 isaacburns 2014-07-28 10:34:09 -0700 Error when including /usr/include/dispatch/dispatch.h. 1025396 1 ap 2014-07-29 00:01:08 -0700 Could you please post a complete test project? 1025499 2 isaacburns 2014-07-29 09:46:22 -0700 I'll see if I can get a smaller test project put together. The full project involves attaching libuv to JSC. From what I can tell, the only thing included before <JavaScriptCore/JavaScriptCore.h> is "uv.h". The following conditional in qos.h is failing, leaving qos_class_t undefined. /Applications/Xcode6-Beta4/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.0.sdk/usr/include/sys/qos.h:30 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL How about adding a fallback for the other cases, as in .../usr/include/dispatch/queue.h:370? #else typedef unsigned int qos_class_t; #endif 1025500 3 ap 2014-07-29 09:50:19 -0700 If you think that the problem is in qos.h itself, then WebKit bugzilla is not the right place to discuss it, we don't maintain it. Could you please file a bug with more details via <http://bugreport.apple.com>? 1025534 4 isaacburns 2014-07-29 11:44:24 -0700 Done. Problem ID 17844922. 1025992 5 ap 2014-07-31 09:47:45 -0700 Thank you! Let's have it tracked there.