133858 2014-06-13 08:26:55 -0700 REGRESSION: global object with custom class in iOS 8.0 or OS X 10.10 2014-06-18 11:04:07 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified NEW P2 Normal --- 1 isaacburns webkit-unassigned ggaren mhahnenberg oldest_to_newest 1015434 0 isaacburns 2014-06-13 08:26:55 -0700 The following code identifies a regression in the iOS SDK 8.0 and OS X SDK 10.10. JSContextGetGlobalObject no longer returns the object with the custom class. This may be related to the following bugs. https://bugs.webkit.org/show_bug.cgi?id=133531 https://bugs.webkit.org/show_bug.cgi?id=133532 #include <JavaScriptCore/JavaScriptCore.h> static bool _hasProperty(JSContextRef js_ctx, JSObjectRef js_object, JSStringRef js_name) { // iOS SDK 7.1 and OS X SDK 10.9: PASS, iOS SDK 8.0 and OS X SDK 10.10: FAIL assert(JSValueIsStrictEqual(js_ctx, js_object, JSContextGetGlobalObject(js_ctx))); return false; } int main(int argc, char * argv[]) { JSClassDefinition js_class_def = kJSClassDefinitionEmpty; js_class_def.hasProperty = _hasProperty; JSClassRef js_class = JSClassCreate(&js_class_def); JSGlobalContextRef js_ctx = JSGlobalContextCreate(js_class); // iOS SDK 7.1 and OS X SDK 10.9: PASS, iOS SDK 8.0 and OS X SDK 10.10: FAIL assert(JSValueIsObjectOfClass(js_ctx, JSContextGetGlobalObject(js_ctx), js_class)); JSStringRef js_name = JSStringCreateWithUTF8CString("Object"); assert(JSObjectHasProperty(js_ctx, JSContextGetGlobalObject(js_ctx), js_name)); JSStringRelease(js_name); js_name = NULL; JSGlobalContextRelease(js_ctx); js_ctx = NULL; JSClassRelease(js_class); js_class = NULL; return 0; } 1016234 1 isaacburns 2014-06-17 13:38:30 -0700 This continues to be the case with iOS 8.0 Beta 2. 1016497 2 ggaren 2014-06-18 11:04:07 -0700 This was an intentional change to make behavior outside of WebKit match behavior inside WebKit.