ASSERTION FAILED: document.renderView() ./css/MediaQueryEvaluator.cpp(909) : static bool WebCore::MediaQueryEvaluator::mediaAttributeMatches(WebCore::Document &, const WTF::String &) 1 0x52142ae39 WTFCrash 2 0x5056f451b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x507e65859 WebCore::MediaQueryEvaluator::mediaAttributeMatches(WebCore::Document&, WTF::String const&) 4 0x508b535e5 WebCore::LinkLoader::preloadIfNeeded(WebCore::LinkLoadParameters const&, WebCore::Document&, WebCore::LinkLoader*) 5 0x508b52b6a WebCore::LinkLoader::loadLinksFromHeader(WTF::String const&, WTF::URL const&, WebCore::Document&, WebCore::LinkLoader::MediaAttributeCheck) 6 0x508babde8 WebCore::SubresourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, WTF::CompletionHandler<void ()>&&) 7 0x4f95e77bc WebKit::WebResourceLoader::didReceiveResponse(WebCore::ResourceResponse const&, bool) 8 0x4f9bcbf7e void IPC::callMemberFunctionImpl<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::ResourceResponse const&, bool), std::__1::tuple<WebCore::ResourceResponse, bool>, 0ul, 1ul>(WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::ResourceResponse const&, bool), std::__1::tuple<WebCore::ResourceResponse, bool>&&, std::__1::integer_sequence<unsigned long, 0ul, 1ul>) 9 0x4f9bcbeb0 void IPC::callMemberFunction<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::ResourceResponse const&, bool), std::__1::tuple<WebCore::ResourceResponse, bool>, std::__1::integer_sequence<unsigned long, 0ul, 1ul> >(std::__1::tuple<WebCore::ResourceResponse, bool>&&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::ResourceResponse const&, bool)) 10 0x4f9bc9cfe void IPC::handleMessage<Messages::WebResourceLoader::DidReceiveResponse, WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::ResourceResponse const&, bool)>(IPC::Decoder&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::ResourceResponse const&, bool)) 11 0x4f9bc96c6 WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::Decoder&) 12 0x4f95acf00 WebKit::NetworkProcessConnection::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 13 0x4f8075a8f IPC::Connection::dispatchMessage(IPC::Decoder&) 14 0x4f80763c0 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) 15 0x4f8076a20 IPC::Connection::dispatchOneIncomingMessage() 16 0x4f80952fe IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_7::operator()() 17 0x4f809520e WTF::Detail::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_7, void>::call() 18 0x521452822 WTF::Function<void ()>::operator()() const 19 0x5214c3358 WTF::RunLoop::performWork() 20 0x5214c3d21 WTF::RunLoop::performWork(void*) 21 0x7fff359e9f12 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ 22 0x7fff359e9eb1 __CFRunLoopDoSource0 23 0x7fff359e9ccb __CFRunLoopDoSources0 24 0x7fff359e89fa __CFRunLoopRun 25 0x7fff359e7ffe CFRunLoopRunSpecific 26 0x7fff3807c2a8 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] 27 0x7fff3812ed2f -[NSRunLoop(NSRunLoop) run] 28 0x7fff6fbeb51a _xpc_objc_main.cold.4 29 0x7fff6fbeb460 _xpc_objc_main 30 0x7fff6fbeaf93 _xpc_copy_xpcservice_dictionary 31 0x4f8866085 WebKit::XPCServiceMain(int, char const**)
<rdar://problem/65144546>
I can't reproduce this with Safari Version 13.1.2 (15609.3.5.1.3), but can running the GTK mini-browser built from commit hash https://github.com/WebKit/webkit/commit/271d9289eac9aea2e2ba04f4520ef20317c16bb7. At least, I can reproduce _a_ crash in the mini-browser...I'm not seeing the backtrace dumped to stdout, so I'm not sure it's exactly this same thing.