Load the attached test with WebKitTestRunner: Checked version: 2c9fa6e OS: Darwin-15.6.0-x86_64-i386-64bit <style>{ } *, *, *, * { display:table;direction:rtl; rid-template-areas:none; -webkit-transform-origin:top; transform:scale(92,4421); Backtrace: ASSERTION FAILED: LayoutPoint(IntPoint(paintOffset.x(), paintOffset.y())) == paintOffset WebKit/Source/WebCore/rendering/RenderView.cpp(489) : virtual void WebCore::RenderView::paint(WebCore::PaintInfo &, const WebCore::LayoutPoint &) 1 0x10dc3e4f1 WTFCrash 2 0x11762bbf5 WebCore::RenderView::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&) 3 0x1170680f6 WebCore::RenderLayer::paintBackgroundForFragments(WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul> const&, WebCore::GraphicsContext&, WebCore::GraphicsContext&, WebCore::LayoutRect const&, bool, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int, WebCore::RenderObject*) 4 0x11705b6a4 WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int) 5 0x1170fa575 WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, unsigned int, unsigned int) 6 0x1170fb5f6 WebCore::RenderLayerBacking::paintContents(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, unsigned int, WebCore::FloatRect const&) 7 0x113bab11d WebCore::GraphicsLayer::paintGraphicsLayerContents(WebCore::GraphicsContext&, WebCore::FloatRect const&) 8 0x113bd434b WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&) 9 0x116a825fc WebCore::PlatformCALayer::drawLayerContents(CGContext*, WebCore::PlatformCALayer*, WTF::Vector<WebCore::FloatRect, 5ul, WTF::CrashOnOverflow, 16ul>&) 10 0x1184a84c2 WebCore::TileGrid::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&) 11 0x1189bf445 -[WebSimpleLayer drawInContext:] 12 0x7fff85a28b19 CABackingStoreUpdate_ 13 0x7fff85a27d6d invocation function for block in CA::Layer::display_() 14 0x7fff85a27759 CA::Layer::display_() 15 0x1189befa9 -[WebSimpleLayer display] 16 0x7fff85a194a5 CA::Layer::display_if_needed(CA::Transaction*) 17 0x7fff85a18fcd CA::Layer::layout_and_display_if_needed(CA::Transaction*) 18 0x7fff85a184a1 CA::Context::commit_transaction(CA::Transaction*) 19 0x7fff85a180ec CA::Transaction::commit() 20 0x1050eb434 WebKit::TiledCoreAnimationDrawingArea::forceRepaint() 21 0x10576348d WebKit::WebPage::forceRepaintWithoutCallback() 22 0x106085d5d WKBundlePageForceRepaint 23 0x12d4fc1ad WTR::InjectedBundlePage::dump() 24 0x12d4fb122 WTR::InjectedBundlePage::frameDidChangeLocation(OpaqueWKBundleFrame const*, bool) 25 0x12d4f7ea7 WTR::InjectedBundlePage::didFinishLoadForFrame(OpaqueWKBundleFrame const*) 26 0x12d4f5fa8 WTR::InjectedBundlePage::didFinishLoadForFrame(OpaqueWKBundlePage const*, OpaqueWKBundleFrame const*, void const**, void const*) 27 0x10480daf5 WebKit::InjectedBundlePageLoaderClient::didFinishLoadForFrame(WebKit::WebPage*, WebKit::WebFrame*, WTF::RefPtr<API::Object>&) 28 0x10548eeb6 WebKit::WebFrameLoaderClient::dispatchDidFinishLoad() 29 0x11395b8c8 WebCore::FrameLoader::checkLoadCompleteForThisFrame() 30 0x113949bcb WebCore::FrameLoader::checkLoadComplete() 31 0x113948d56 WebCore::FrameLoader::checkCompleted() ASAN:DEADLYSIGNAL ================================================================= ==25873==ERROR: AddressSanitizer: SEGV on unknown address 0x0000bbadbeef (pc 0x00010dc3e529 bp 0x7fff5b86e610 sp 0x7fff5b86e600 T0) #0 0x10dc3e528 in WTFCrash (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x2d01528) #1 0x11762bbf4 in WebCore::RenderView::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5754bf4) #2 0x1170680f5 in WebCore::RenderLayer::paintBackgroundForFragments(WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul> const&, WebCore::GraphicsContext&, WebCore::GraphicsContext&, WebCore::LayoutRect const&, bool, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int, WebCore::RenderObject*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x51910f5) #3 0x11705b6a3 in WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x51846a3) #4 0x1170fa574 in WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, unsigned int, unsigned int) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5223574) #5 0x1170fb5f5 in WebCore::RenderLayerBacking::paintContents(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, unsigned int, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x52245f5) #6 0x113bab11c in WebCore::GraphicsLayer::paintGraphicsLayerContents(WebCore::GraphicsContext&, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1cd411c) #7 0x113bd434a in WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1cfd34a) #8 0x116a825fb in WebCore::PlatformCALayer::drawLayerContents(CGContext*, WebCore::PlatformCALayer*, WTF::Vector<WebCore::FloatRect, 5ul, WTF::CrashOnOverflow, 16ul>&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x4bab5fb) #9 0x1184a84c1 in WebCore::TileGrid::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x65d14c1) #10 0x1189bf444 in -[WebSimpleLayer drawInContext:] (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x6ae8444) #11 0x7fff85a28b18 in CABackingStoreUpdate_ (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x20b18) #12 0x7fff85a27d6c in invocation function for block in CA::Layer::display_() (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x1fd6c) #13 0x7fff85a27758 in CA::Layer::display_() (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x1f758) #14 0x1189befa8 in -[WebSimpleLayer display] (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x6ae7fa8) #15 0x7fff85a194a4 in CA::Layer::display_if_needed(CA::Transaction*) (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x114a4) #16 0x7fff85a18fcc in CA::Layer::layout_and_display_if_needed(CA::Transaction*) (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x10fcc) #17 0x7fff85a184a0 in CA::Context::commit_transaction(CA::Transaction*) (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x104a0) #18 0x7fff85a180eb in CA::Transaction::commit() (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x100eb) #19 0x1050eb433 in WebKit::TiledCoreAnimationDrawingArea::forceRepaint() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0xd44433) #20 0x10576348c in WebKit::WebPage::forceRepaintWithoutCallback() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x13bc48c) #21 0x106085d5c in WKBundlePageForceRepaint (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1cded5c) #22 0x12d4fc1ac in WTR::InjectedBundlePage::dump() (WebKit/WebKitBuild/Debug/WebKitTestRunnerInjectedBundle.bundle/Contents/MacOS/WebKitTestRunnerInjectedBundle+0x641ac) #23 0x12d4fb121 in WTR::InjectedBundlePage::frameDidChangeLocation(OpaqueWKBundleFrame const*, bool) (WebKit/WebKitBuild/Debug/WebKitTestRunnerInjectedBundle.bundle/Contents/MacOS/WebKitTestRunnerInjectedBundle+0x63121) #24 0x12d4f7ea6 in WTR::InjectedBundlePage::didFinishLoadForFrame(OpaqueWKBundleFrame const*) (WebKit/WebKitBuild/Debug/WebKitTestRunnerInjectedBundle.bundle/Contents/MacOS/WebKitTestRunnerInjectedBundle+0x5fea6) #25 0x12d4f5fa7 in WTR::InjectedBundlePage::didFinishLoadForFrame(OpaqueWKBundlePage const*, OpaqueWKBundleFrame const*, void const**, void const*) (WebKit/WebKitBuild/Debug/WebKitTestRunnerInjectedBundle.bundle/Contents/MacOS/WebKitTestRunnerInjectedBundle+0x5dfa7) #26 0x10480daf4 in WebKit::InjectedBundlePageLoaderClient::didFinishLoadForFrame(WebKit::WebPage*, WebKit::WebFrame*, WTF::RefPtr<API::Object>&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x466af4) #27 0x10548eeb5 in WebKit::WebFrameLoaderClient::dispatchDidFinishLoad() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x10e7eb5) #28 0x11395b8c7 in WebCore::FrameLoader::checkLoadCompleteForThisFrame() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1a848c7) #29 0x113949bca in WebCore::FrameLoader::checkLoadComplete() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1a72bca) #30 0x113948d55 in WebCore::FrameLoader::checkCompleted() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1a71d55) #31 0x113948de4 in WebCore::FrameLoader::loadDone() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1a71de4) #32 0x11251d21e in WebCore::CachedResourceLoader::loadDone(WebCore::CachedResource*, bool) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x64621e) #33 0x117fda339 in WebCore::SubresourceLoader::notifyDone() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x6103339) #34 0x117fdaa9a in WebCore::SubresourceLoader::didFail(WebCore::ResourceError const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x6103a9a) #35 0x105e386d0 in WebKit::WebResourceLoader::didFailResourceLoad(WebCore::ResourceError const&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a916d0) #36 0x105e46e09 in void IPC::callMemberFunctionImpl<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::ResourceError const&), std::__1::tuple<WebCore::ResourceError>, 0ul>(WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::ResourceError const&), std::__1::tuple<WebCore::ResourceError>&&, std::__1::integer_sequence<unsigned long, 0ul>) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9fe09) #37 0x105e46a14 in void IPC::callMemberFunction<WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::ResourceError const&), std::__1::tuple<WebCore::ResourceError>, std::__1::integer_sequence<unsigned long, 0ul> >(std::__1::tuple<WebCore::ResourceError>&&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::ResourceError const&)) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9fa14) #38 0x105e43a93 in void IPC::handleMessage<Messages::WebResourceLoader::DidFailResourceLoad, WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::ResourceError const&)>(IPC::Decoder&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::ResourceError const&)) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9ca93) #39 0x105e41c4b in WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1a9ac4b) #40 0x104b6ada9 in WebKit::NetworkProcessConnection::didReceiveMessage(IPC::Connection&, IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x7c3da9) #41 0x10457efba in IPC::Connection::dispatchMessage(IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1d7fba) #42 0x1045677c4 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 0x10457fca5 in IPC::Connection::dispatchOneMessage() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1d8ca5) #44 0x10459025c in IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14::operator()() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1e925c) #45 0x104590188 in WTF::Function<void ()>::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14>::call() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1e9188) #46 0x10dcc2830 in WTF::Function<void ()>::operator()() const (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x2d85830) #47 0x10dd0cd50 in WTF::RunLoop::performWork() (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x2dcfd50) #48 0x10dd0db11 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 0x104389f73 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 ==25873==ABORTING #CRASHED - com.apple.WebKit.WebContent.Development (pid 25873)