我们有一个带有UIWebView的iOS应用程序,用于加载YouTube iframe播放器以播放YouTube视频.iOS 11.3发布后,我们发现有很多javascript核心崩溃.在Fabric crashlytics上,崩溃stcktrace看起来像这样
Crashed: WebThread
0 JavaScriptCore 0x18aa48298 JSC::JSLock::DropAllLocks::DropAllLocks(JSC::VM&) + 176
1 JavaScriptCore 0x18aa4826c JSC::JSLock::DropAllLocks::DropAllLocks(JSC::VM&) + 132
2 WebCore 0x18b78b794 SendDelegateMessage(NSInvocation*) + 360
3 WebKitLegacy 0x18cea7c68 CallDelegate(void (*)(), WebView*, objc_object*, objc_selector*, objc_object*, objc_object*, objc_object*) + 144
4 WebKitLegacy 0x18ce1b8d0 WebFrameLoaderClient::dispatchDidFailLoading(WebCore::DocumentLoader*, unsigned long, WebCore::ResourceError const&) + 276
5 WebCore 0x18b7ba660 WebCore::ResourceLoadNotifier::didFailToLoad(WebCore::ResourceLoader*, WebCore::ResourceError const&) + 128
6 WebCore 0x18b7ba118 WebCore::ResourceLoader::cancel(WebCore::ResourceError const&) + 464
7 WebCore 0x18b7b9ea4 WebCore::ResourceLoader::cancel() + 64
8 WebCore 0x18c6bbe90 WebCore::CachedResource::removeClient(WebCore::CachedResourceClient&) + 264
9 WebCore 0x18c680558 WebCore::MediaResource::~MediaResource() + 64 …