Bug 166819

Load the attached test with debug WebKitTestRunner: Checked version: 217d599 OS: Darwin-15.6.0-x86_64-i386-64bit <style>{}*{margin-bottom:-20932678!important</style><blockquote>L</blockquote><footer>t</footer>9 Backtrace: ASSERTION FAILED: view().layoutDeltaMatches(oldLayoutDelta) WebKit/Source/WebCore/rendering/RenderBlockFlow.cpp(794) : void WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox &, WebCore::RenderBlockFlow::MarginInfo &, WebCore::LayoutUnit &, WebCore::LayoutUnit &) 1 0x10b2144f1 WTFCrash 2 0x11427abea WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&) 3 0x114271f50 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&) 4 0x11426e808 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) 5 0x1141b81b2 WebCore::RenderBlock::layout() 6 0x1142793e4 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&) 7 0x114271f50 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&) 8 0x11426e808 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) 9 0x1141b81b2 WebCore::RenderBlock::layout() 10 0x1142793e4 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&) 11 0x114271f50 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&) 12 0x11426e808 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) 13 0x1141b81b2 WebCore::RenderBlock::layout() 14 0x114bff3b6 WebCore::RenderView::layoutContent(WebCore::LayoutState const&) 15 0x114c01816 WebCore::RenderView::layout() 16 0x110fb36a2 WebCore::FrameView::layout(bool) 17 0x11063b9d6 WebCore::Document::implicitClose() 18 0x110f211e3 WebCore::FrameLoader::checkCallImplicitClose() 19 0x110f20ccc WebCore::FrameLoader::checkCompleted() 20 0x110f1d177 WebCore::FrameLoader::finishedParsing() 21 0x11065fab3 WebCore::Document::finishedParsing() 22 0x1112e6556 WebCore::HTMLConstructionSite::finishedParsing() 23 0x1115de5b8 WebCore::HTMLTreeBuilder::finished() 24 0x111359cfc WebCore::HTMLDocumentParser::end() 25 0x1113559e7 WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd() 26 0x11135564e WebCore::HTMLDocumentParser::prepareToStopParsing() 27 0x111359d9c WebCore::HTMLDocumentParser::attemptToEnd() 28 0x111359df4 WebCore::HTMLDocumentParser::finish() 29 0x110824980 WebCore::DocumentWriter::end() 30 0x11077ee57 WebCore::DocumentLoader::finishedLoading(double) 31 0x11077e98b WebCore::DocumentLoader::notifyFinished(WebCore::CachedResource&) ASAN:DEADLYSIGNAL ================================================================= ==18439==ERROR: AddressSanitizer: SEGV on unknown address 0x0000bbadbeef (pc 0x00010b214529 bp 0x7fff5e299350 sp 0x7fff5e299340 T0) #0 0x10b214528 in WTFCrash (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x2d01528) #1 0x11427abe9 in WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dcbbe9) #2 0x114271f4f in WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dc2f4f) #3 0x11426e807 in WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dbf807) #4 0x1141b81b1 in WebCore::RenderBlock::layout() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4d091b1) #5 0x1142793e3 in WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dca3e3) #6 0x114271f4f in WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dc2f4f) #7 0x11426e807 in WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dbf807) #8 0x1141b81b1 in WebCore::RenderBlock::layout() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4d091b1) #9 0x1142793e3 in WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dca3e3) #10 0x114271f4f in WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dc2f4f) #11 0x11426e807 in WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4dbf807) #12 0x1141b81b1 in WebCore::RenderBlock::layout() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4d091b1) #13 0x114bff3b5 in WebCore::RenderView::layoutContent(WebCore::LayoutState const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x57503b5) #14 0x114c01815 in WebCore::RenderView::layout() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5752815) #15 0x110fb36a1 in WebCore::FrameView::layout(bool) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1b046a1) #16 0x11063b9d5 in WebCore::Document::implicitClose() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x118c9d5) #17 0x110f211e2 in WebCore::FrameLoader::checkCallImplicitClose() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1a721e2) #18 0x110f20ccb in WebCore::FrameLoader::checkCompleted() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1a71ccb) #19 0x110f1d176 in WebCore::FrameLoader::finishedParsing() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1a6e176) #20 0x11065fab2 in WebCore::Document::finishedParsing() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x11b0ab2) #21 0x1112e6555 in WebCore::HTMLConstructionSite::finishedParsing() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1e37555) #22 0x1115de5b7 in WebCore::HTMLTreeBuilder::finished() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x212f5b7) #23 0x111359cfb in WebCore::HTMLDocumentParser::end() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1eaacfb) #24 0x1113559e6 in WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1ea69e6) #25 0x11135564d in WebCore::HTMLDocumentParser::prepareToStopParsing() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1ea664d) #26 0x111359d9b in WebCore::HTMLDocumentParser::attemptToEnd() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1eaad9b) #27 0x111359df3 in WebCore::HTMLDocumentParser::finish() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1eaadf3) #28 0x11082497f in WebCore::DocumentWriter::end() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x137597f) #29 0x11077ee56 in WebCore::DocumentLoader::finishedLoading(double) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x12cfe56) #30 0x11077e98a in WebCore::DocumentLoader::notifyFinished(WebCore::CachedResource&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x12cf98a) #31 0x10fac0b23 in WebCore::CachedResource::checkNotify() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x611b23) #32 0x10fac0d13 in WebCore::CachedResource::finishLoading(WebCore::SharedBuffer*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x611d13) #33 0x10fab5d54 in WebCore::CachedRawResource::finishLoading(WebCore::SharedBuffer*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x606d54) #34 0x1155aee8e in WebCore::SubresourceLoader::didFinishLoading(double) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x60ffe8e) #35 0x10340b43e in WebKit::WebResourceLoader::didFinishResourceLoad(double) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9143e) #36 0x1034196ce in void IPC::callMemberFunctionImpl<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(double), std::__1::tuple<double>, 0ul>(WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(double), std::__1::tuple<double>&&, std::__1::integer_sequence<unsigned long, 0ul>) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9f6ce) #37 0x103419374 in void IPC::callMemberFunction<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(double), std::__1::tuple<double>, std::__1::integer_sequence<unsigned long, 0ul> >(std::__1::tuple<double>&&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(double)) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9f374) #38 0x103416680 in void IPC::handleMessage<Messages::WebResourceLoader::DidFinishResourceLoad, WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(double)>(IPC::Decoder&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(double)) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9c680) #39 0x103414a10 in WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9aa10) #40 0x10213dda9 in WebKit::NetworkProcessConnection::didReceiveMessage(IPC::Connection&, IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x7c3da9) #41 0x101b51fba in IPC::Connection::dispatchMessage(IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1d7fba) #42 0x101b3a7c4 in IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1c07c4) #43 0x101b52ca5 in IPC::Connection::dispatchOneMessage() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1d8ca5) #44 0x101b6325c in IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14::operator()() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1e925c) #45 0x101b63188 in WTF::Function<void ()>::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14>::call() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1e9188) #46 0x10b298830 in WTF::Function<void ()>::operator()() const (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x2d85830) #47 0x10b2e2d50 in WTF::RunLoop::performWork() (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x2dcfd50) #48 0x10b2e3b11 in WTF::RunLoop::performWork(void*) (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x2dd0b11) #49 0x7fff81c1f880 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0xaa880) #50 0x7fff81bfefbb in __CFRunLoopDoSources0 (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x89fbb) #51 0x7fff81bfe4de in __CFRunLoopRun (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x894de) #52 0x7fff81bfded7 in CFRunLoopRunSpecific (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x88ed7) #53 0x7fff82fde934 in RunCurrentEventLoopInMode (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x30934) #54 0x7fff82fde76e in ReceiveNextEventCommon (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x3076e) #55 0x7fff82fde5ae in _BlockUntilNextEventMatchingListInModeWithFilter (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x305ae) #56 0x7fff8e643df5 in _DPSNextEvent (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x48df5) #57 0x7fff8e643225 in -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x48225) #58 0x7fff8e637d7f in -[NSApplication run] (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x3cd7f) #59 0x7fff8e601367 in NSApplicationMain (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x6367) #60 0x7fff92f09193 in _xpc_objc_main (/usr/lib/system/libxpc.dylib+0x11193) #61 0x7fff92f07bbd in xpc_main (/usr/lib/system/libxpc.dylib+0xfbbd) #62 0x10195df73 in main (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent.Development+0x100001f73) #63 0x7fff8ab8d5ac in start (/usr/lib/system/libdyld.dylib+0x35ac) #64 0x0 (<unknown module>) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x2d01528) in WTFCrash ==18439==ABORTING #CRASHED - com.apple.WebKit.WebContent.Development (pid 18439)