255748 2023-04-20 14:37:24 -0700 [GTK][WPE][Win] ASSERTION FAILED: !mainResourceLoader() || !mainResourceLoader()->defersLoading() 2026-05-17 22:21:15 -0700 1 1 1 Unclassified WebKit Platform WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 fujii fujii webkit-bug-importer oldest_to_newest 1950166 0 fujii 2023-04-20 14:37:24 -0700 [Win] ASSERTION FAILED: !mainResourceLoader() || !mainResourceLoader()->defersLoading() http/tests/security/navigate-when-restoring-cached-page.html http/tests/security/showModalDialog-sync-cross-origin-page-load2.html ASSERTION FAILED: !mainResourceLoader() || !mainResourceLoader()->defersLoading() C:\home\webkit\gb\Source\WebCore\loader/DocumentLoader.cpp(980) : WebCore::DocumentLoader::responseReceived 1 00007FFEE8DA249B WTFCrash 2 00007FFE90192FCE WTFCrashWithInfo 3 00007FFE93798B3F WebCore::DocumentLoader::responseReceived 4 00007FFE93797E10 WebCore::DocumentLoader::responseReceived 5 00007FFE93912FB1 WebCore::CachedRawResource::responseReceived 6 00007FFE9388DA9E WebCore::SubresourceLoader::didReceiveResponse 7 00007FFEE1244D98 WebKit::WebResourceLoader::didReceiveResponse 8 00007FFEDFF599B4 `IPC::callMemberFunction<WebKit::WebResourceLoader,WebKit::WebResourceLoader,void __cdecl(WebCore::ResourceResponse &&,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> &&),std::tuple<WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> > >'::`2'::<lambda_1>::operator()<WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> > 9 00007FFEDFF5C73C std::invoke<`IPC::callMemberFunction<WebKit::WebResourceLoader,WebKit::WebResourceLoader,void __cdecl(WebCore::ResourceResponse &&,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> &&),std::tuple<WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> > >'::`2'::<lambda_1>,WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> > 10 00007FFEDFF59C33 std::_Apply_impl<`IPC::callMemberFunction<WebKit::WebResourceLoader,WebKit::WebResourceLoader,void __cdecl(WebCore::ResourceResponse &&,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> &&),std::tuple<WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> > >'::`2'::<lambda_1>,std::tuple<WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> >,0,1,2,3> 11 00007FFEDFF59F45 std::apply<`IPC::callMemberFunction<WebKit::WebResourceLoader,WebKit::WebResourceLoader,void __cdecl(WebCore::ResourceResponse &&,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> &&),std::tuple<WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> > >'::`2'::<lambda_1>,std::tuple<WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> > > 12 00007FFEDFF5A1C5 IPC::callMemberFunction<WebKit::WebResourceLoader,WebKit::WebResourceLoader,void __cdecl(WebCore::ResourceResponse &&,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> &&),std::tuple<WebCore::ResourceResponse,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> > > 13 00007FFEDFF5BFEC IPC::handleMessage<Messages::WebResourceLoader::DidReceiveResponse,WebKit::WebResourceLoader,WebKit::WebResourceLoader,void __cdecl(WebCore::ResourceResponse &&,enum WebKit::PrivateRelayed,bool,std::optional<WebCore::NetworkLoadMetrics> &&)> 14 00007FFEDFF583DC WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage 15 00007FFEE1242FA7 WebKit::NetworkProcessConnection::didReceiveMessage 16 00007FFEE09C673D IPC::Connection::dispatchMessage 17 00007FFEE09C63C9 IPC::Connection::dispatchMessage 18 00007FFEE09C5C5D IPC::Connection::dispatchOneIncomingMessage 19 00007FFEE09C8CBF `IPC::Connection::enqueueIncomingMessage'::`19'::<lambda_2>::operator() 20 00007FFEE09CA62B WTF::Detail::CallableWrapper<`IPC::Connection::enqueueIncomingMessage'::`19'::<lambda_2>,void>::call 21 00007FFEE8DB9BE3 WTF::Function<void __cdecl(void)>::operator() 22 00007FFEE8E4C8C8 WTF::RunLoop::performWork 23 00007FFEE8F33171 WTF::RunLoop::wndProc 24 00007FFEE8F330D4 WTF::RunLoop::RunLoopWndProc 25 00007FFF6BC6E858 CallWindowProcW 26 00007FFF6BC6E299 DispatchMessageW 27 00007FFEE8F32636 WTF::RunLoop::run 28 00007FFEE13DD422 WebKit::WebPage::runModal 29 00007FFEE130FF88 WebKit::WebChromeClient::runModal 30 00007FFE93972023 WebCore::Chrome::runModal 31 00007FFE93A29990 WebCore::LocalDOMWindow::showModalDialog 1951650 1 webkit-bug-importer 2023-04-27 14:38:18 -0700 <rdar://problem/108627934> 2182031 2 fujii 2026-02-15 23:57:03 -0800 Apple ports disable the assertion. https://github.com/WebKit/WebKit/blob/a08dbd85a16ed7ffe30ff2123dcf1bf0c533db24/Source/WebCore/loader/DocumentLoader.cpp#L309-L313 2210759 3 fujii 2026-05-13 21:47:05 -0700 See also 131039@main 131062@main 131017@main 2210767 4 fujii 2026-05-13 22:17:41 -0700 Pull request: https://github.com/WebKit/WebKit/pull/64902 2211627 5 ews-feeder 2026-05-17 22:21:13 -0700 Committed 313392@main (f2c9beb2a707): <https://commits.webkit.org/313392@main> Reviewed commits have been landed. Closing PR #64902 and removing active labels.