[Webkit-unassigned] [Bug 226866] New: ASSERT NOT REACHED in webcore::Layout::LayoutContext::verifyAndOutputMismatchingLayoutTree()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=226866

            Bug ID: 226866
           Summary: ASSERT NOT REACHED in
                    webcore::Layout::LayoutContext::verifyAndOutputMismatc
                    hingLayoutTree()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ryanhaddad at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Seeing the following assert with fast/layoutformattingcontext/table-fixed-width-with-max-distribution.html

https://build.webkit.org/results/Apple-BigSur-Debug-AppleSilicon-WK2-Tests/r278687%20(1599)/fast/layoutformattingcontext/table-fixed-width-with-max-distribution-stderr.txt

SHOULD NEVER BE REACHED
./layout/Verification.cpp(347) : static void WebCore::Layout::LayoutContext::verifyAndOutputMismatchingLayoutTree(const WebCore::Layout::LayoutState &, const WebCore::RenderView &)
1   0x134a639ec WTFCrash
2   0x1139237f0 WTFCrashWithInfo(int, char const*, char const*, int)
3   0x116eba5c4 WebCore::Layout::LayoutContext::verifyAndOutputMismatchingLayoutTree(WebCore::Layout::LayoutState const&, WebCore::RenderView const&)
4   0x1172dc024 WebCore::FrameViewLayoutContext::layoutUsingFormattingContext()
5   0x1172be470 WebCore::FrameViewLayoutContext::layout()
6   0x1162ec0e4 WebCore::Document::implicitClose()
7   0x1170621f4 WebCore::FrameLoader::checkCallImplicitClose()
8   0x117061cdc WebCore::FrameLoader::checkCompleted()
9   0x11706024c WebCore::FrameLoader::finishedParsing()
10  0x1162ff320 WebCore::Document::finishedParsing()
11  0x116b5e6c0 WebCore::HTMLConstructionSite::finishedParsing()
12  0x116ba49e4 WebCore::HTMLTreeBuilder::finished()
13  0x116b6ec14 WebCore::HTMLDocumentParser::end()
14  0x116b6ca18 WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd()
15  0x116b6c7a8 WebCore::HTMLDocumentParser::prepareToStopParsing()
16  0x116b6ec84 WebCore::HTMLDocumentParser::attemptToEnd()
17  0x116b6ed40 WebCore::HTMLDocumentParser::finish()
18  0x116fecd90 WebCore::DocumentWriter::end()
19  0x116fec0d0 WebCore::DocumentLoader::finishedLoading()
20  0x116febc88 WebCore::DocumentLoader::notifyFinished(WebCore::CachedResource&, WebCore::NetworkLoadMetrics const&)
21  0x11719d1dc WebCore::CachedResource::checkNotify(WebCore::NetworkLoadMetrics const&)
22  0x117198f40 WebCore::CachedResource::finishLoading(WebCore::SharedBuffer*, WebCore::NetworkLoadMetrics const&)
23  0x11719a3c0 WebCore::CachedRawResource::finishLoading(WebCore::SharedBuffer*, WebCore::NetworkLoadMetrics const&)
24  0x11710e334 WebCore::SubresourceLoader::didFinishLoading(WebCore::NetworkLoadMetrics const&)
25  0x1024f57a4 WebKit::WebResourceLoader::didFinishResourceLoad(WebCore::NetworkLoadMetrics const&)
26  0x102c23208 void IPC::callMemberFunctionImpl<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&), std::__1::tuple<WebCore::NetworkLoadMetrics>, 0ul>(WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&), std::__1::tuple<WebCore::NetworkLoadMetrics>&&, std::__1::integer_sequence<unsigned long, 0ul>)
27  0x102c22ffc void IPC::callMemberFunction<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&), std::__1::tuple<WebCore::NetworkLoadMetrics>, std::__1::integer_sequence<unsigned long, 0ul> >(std::__1::tuple<WebCore::NetworkLoadMetrics>&&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&))
28  0x102c1fa9c void IPC::handleMessage<Messages::WebResourceLoader::DidFinishResourceLoad, WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&)>(IPC::Decoder&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&))
29  0x102c1f480 WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::Decoder&)
30  0x1024b5b60 WebKit::NetworkProcessConnection::didReceiveMessage(IPC::Connection&, IPC::Decoder&)
31  0x100449bbc IPC::Connection::dispatchMessage(IPC::Decoder&)

https://results.webkit.org/?suite=layout-tests&test=fast%2Flayoutformattingcontext%2Ftable-fixed-width-with-max-distribution.html

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