Bug 169749 – ASSERTION FAILED: !m_grid.needsItemsPlacement() in WebCore::RenderGrid::paintChildren

• Component: Layout and Rendering
• Status: RESOLVED DUPLICATE

[Renata Hodovan]

Created attachment 304636 [details]
Test

Load the attached test with debug WebKitTestRunner:

Checked version: c9b0459
OS: macOS Sierra (10.12.3)

cript>
window.onload = function() {
    document.execCommand ('selectAll')
    document.designMode = 'on'
    document.execCommand ('indent')
}
</script>
<style>
:nth-last-child(9), * {
    display:grid
}
* *,:nth-last-of-type(9) {
    position: fixed;
}
</style>

Backtrace:

ASSERTION FAILED: !m_grid.needsItemsPlacement()
WebKit/Source/WebCore/rendering/RenderGrid.cpp(1643) : virtual void WebCore::RenderGrid::paintChildren(WebCore::PaintInfo &, const WebCore::LayoutPoint &, WebCore::PaintInfo &, bool)
1   0x12ec53521 WTFCrash
2   0x115fcab90 WebCore::RenderGrid::paintChildren(WebCore::PaintInfo&, WebCore::LayoutPoint const&, WebCore::PaintInfo&, bool)
3   0x115c253a4 WebCore::RenderBlock::paintContents(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
4   0x115c2789c WebCore::RenderBlock::paintObject(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
5   0x115c24812 WebCore::RenderBlock::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
6   0x116081c24 WebCore::RenderLayer::paintForegroundForFragmentsWithPhase(WebCore::PaintPhase, WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul> const&, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int, WebCore::RenderObject*)
7   0x11607788a WebCore::RenderLayer::paintForegroundForFragments(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*, bool)
8   0x116069bfe WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int)
9   0x116068022 WebCore::RenderLayer::paintLayerContentsAndReflection(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int)
10  0x116063abb WebCore::RenderLayer::paintLayer(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int)
11  0x116077186 WebCore::RenderLayer::paintList(WTF::Vector<WebCore::RenderLayer*, 0ul, WTF::CrashOnOverflow, 16ul>*, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int)
12  0x116069d12 WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int)
13  0x116103815 WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, unsigned int, unsigned int)
14  0x116104872 WebCore::RenderLayerBacking::paintContents(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, unsigned int, WebCore::FloatRect const&)
15  0x1122ca4bd WebCore::GraphicsLayer::paintGraphicsLayerContents(WebCore::GraphicsContext&, WebCore::FloatRect const&)
16  0x1122f780b WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&)
17  0x1122f79cf non-virtual thunk to WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&)
18  0x115a8456f WebCore::PlatformCALayer::drawLayerContents(CGContext*, WebCore::PlatformCALayer*, WTF::Vector<WebCore::FloatRect, 5ul, WTF::CrashOnOverflow, 16ul>&)
19  0x117542d2f WebCore::TileGrid::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&)
20  0x117b415dd -[WebSimpleLayer drawInContext:]
21  0x7fff7fa54314 CABackingStoreUpdate_
22  0x7fff7fb71464 invocation function for block in CA::Layer::display_()
23  0x7fff7fb710c5 CA::Layer::display_()
24  0x117b41139 -[WebSimpleLayer display]
25  0x7fff7fb64f6e CA::Layer::display_if_needed(CA::Transaction*)
26  0x7fff7fb65099 CA::Layer::layout_and_display_if_needed(CA::Transaction*)
27  0x7fff7fb5a878 CA::Context::commit_transaction(CA::Transaction*)
28  0x7fff7fa51631 CA::Transaction::commit()
29  0x10b93a2b4 WebKit::TiledCoreAnimationDrawingArea::forceRepaint()
30  0x10c0a24ed WebKit::WebPage::forceRepaintWithoutCallback()
31  0x10cc5f63d WKBundlePageForceRepaint
ASAN:DEADLYSIGNAL
=================================================================
==41533==ERROR: AddressSanitizer: SEGV on unknown address 0x0000bbadbeef (pc 0x00012ec53559 bp 0x7fff5a30a290 sp 0x7fff5a30a280 T0)
    #0 0x12ec53558 in WTFCrash (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x36db558)
    #1 0x115fcab8f in WebCore::RenderGrid::paintChildren(WebCore::PaintInfo&, WebCore::LayoutPoint const&, WebCore::PaintInfo&, bool) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5af2b8f)
    #2 0x115c253a3 in WebCore::RenderBlock::paintContents(WebCore::PaintInfo&, WebCore::LayoutPoint const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x574d3a3)
    #3 0x115c2789b in WebCore::RenderBlock::paintObject(WebCore::PaintInfo&, WebCore::LayoutPoint const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x574f89b)
    #4 0x115c24811 in WebCore::RenderBlock::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x574c811)
    #5 0x116081c23 in WebCore::RenderLayer::paintForegroundForFragmentsWithPhase(WebCore::PaintPhase, WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul> const&, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int, WebCore::RenderObject*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5ba9c23)
    #6 0x116077889 in WebCore::RenderLayer::paintForegroundForFragments(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*, bool) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5b9f889)
    #7 0x116069bfd in WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5b91bfd)
    #8 0x116068021 in WebCore::RenderLayer::paintLayerContentsAndReflection(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5b90021)
    #9 0x116063aba in WebCore::RenderLayer::paintLayer(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5b8baba)
    #10 0x116077185 in WebCore::RenderLayer::paintList(WTF::Vector<WebCore::RenderLayer*, 0ul, WTF::CrashOnOverflow, 16ul>*, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5b9f185)
    #11 0x116069d11 in WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, unsigned int) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5b91d11)
    #12 0x116103814 in WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, unsigned int, unsigned int) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5c2b814)
    #13 0x116104871 in WebCore::RenderLayerBacking::paintContents(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, unsigned int, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x5c2c871)
    #14 0x1122ca4bc in WebCore::GraphicsLayer::paintGraphicsLayerContents(WebCore::GraphicsContext&, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1df24bc)
    #15 0x1122f780a in WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1e1f80a)
    #16 0x1122f79ce in non-virtual thunk to WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1e1f9ce)
    #17 0x115a8456e in WebCore::PlatformCALayer::drawLayerContents(CGContext*, WebCore::PlatformCALayer*, WTF::Vector<WebCore::FloatRect, 5ul, WTF::CrashOnOverflow, 16ul>&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x55ac56e)
    #18 0x117542d2e in WebCore::TileGrid::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x706ad2e)
    #19 0x117b415dc in -[WebSimpleLayer drawInContext:] (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x76695dc)
    #20 0x7fff7fa54313 in CABackingStoreUpdate_ (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x13313)
    #21 0x7fff7fb71463 in invocation function for block in CA::Layer::display_() (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x130463)
    #22 0x7fff7fb710c4 in CA::Layer::display_() (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x1300c4)
    #23 0x117b41138 in -[WebSimpleLayer display] (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x7669138)
    #24 0x7fff7fb64f6d in CA::Layer::display_if_needed(CA::Transaction*) (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x123f6d)
    #25 0x7fff7fb65098 in CA::Layer::layout_and_display_if_needed(CA::Transaction*) (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x124098)
    #26 0x7fff7fb5a877 in CA::Context::commit_transaction(CA::Transaction*) (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x119877)
    #27 0x7fff7fa51630 in CA::Transaction::commit() (/System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore+0x10630)
    #28 0x10b93a2b3 in WebKit::TiledCoreAnimationDrawingArea::forceRepaint() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0xf462b3)
    #29 0x10c0a24ec in WebKit::WebPage::forceRepaintWithoutCallback() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x16ae4ec)
    #30 0x10cc5f63c in WKBundlePageForceRepaint (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x226b63c)
    #31 0x137d0698c in WTR::InjectedBundlePage::dump() (WebKit/WebKitBuild/Debug/WebKitTestRunnerInjectedBundle.bundle/Contents/MacOS/WebKitTestRunnerInjectedBundle+0x6b98c)
    #32 0x137d057a1 in WTR::InjectedBundlePage::frameDidChangeLocation(OpaqueWKBundleFrame const*, bool) (WebKit/WebKitBuild/Debug/WebKitTestRunnerInjectedBundle.bundle/Contents/MacOS/WebKitTestRunnerInjectedBundle+0x6a7a1)
    #33 0x137d022a6 in WTR::InjectedBundlePage::didFinishLoadForFrame(OpaqueWKBundleFrame const*) (WebKit/WebKitBuild/Debug/WebKitTestRunnerInjectedBundle.bundle/Contents/MacOS/WebKitTestRunnerInjectedBundle+0x672a6)
    #34 0x137d001f7 in WTR::InjectedBundlePage::didFinishLoadForFrame(OpaqueWKBundlePage const*, OpaqueWKBundleFrame const*, void const**, void const*) (WebKit/WebKitBuild/Debug/WebKitTestRunnerInjectedBundle.bundle/Contents/MacOS/WebKitTestRunnerInjectedBundle+0x651f7)
    #35 0x10ae811b4 in WebKit::InjectedBundlePageLoaderClient::didFinishLoadForFrame(WebKit::WebPage*, WebKit::WebFrame*, WTF::RefPtr<API::Object>&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x48d1b4)
    #36 0x10bd7bea5 in WebKit::WebFrameLoaderClient::dispatchDidFinishLoad() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1387ea5)
    #37 0x11201e689 in WebCore::FrameLoader::checkLoadCompleteForThisFrame() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1b46689)
    #38 0x112008eca in WebCore::FrameLoader::checkLoadComplete() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x1b30eca)
    #39 0x1117cc7e6 in WebCore::DocumentLoader::finishedLoading() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x12f47e6)
    #40 0x1117cc172 in WebCore::DocumentLoader::notifyFinished(WebCore::CachedResource&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x12f4172)
    #41 0x110af0273 in WebCore::CachedResource::checkNotify() (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x618273)
    #42 0x110af0903 in WebCore::CachedResource::finishLoading(WebCore::SharedBuffer*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x618903)
    #43 0x110ae2198 in WebCore::CachedRawResource::finishLoading(WebCore::SharedBuffer*) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x60a198)
    #44 0x1170694c9 in WebCore::SubresourceLoader::didFinishLoading(WebCore::NetworkLoadMetrics const&) (WebKit/WebKitBuild/Debug/WebCore.framework/Versions/A/WebCore+0x6b914c9)
    #45 0x10c908ac5 in WebKit::WebResourceLoader::didFinishResourceLoad(WebCore::NetworkLoadMetrics const&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f14ac5)
    #46 0x10c918989 in 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>) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f24989)
    #47 0x10c918594 in 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&)) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f24594)
    #48 0x10c915648 in void IPC::handleMessage<Messages::WebResourceLoader::DidFinishResourceLoad, WebKit::WebResourceLoader, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&)>(IPC::Decoder&, WebKit::WebResourceLoader*, void (WebKit::WebResourceLoader::*)(WebCore::NetworkLoadMetrics const&)) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f21648)
    #49 0x10c9137fa in WebKit::WebResourceLoader::didReceiveWebResourceLoaderMessage(IPC::Connection&, IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1f1f7fa)
    #50 0x10b30c040 in WebKit::NetworkProcessConnection::didReceiveMessage(IPC::Connection&, IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x918040)
    #51 0x10ac0f56a in IPC::Connection::dispatchMessage(IPC::Decoder&) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x21b56a)
    #52 0x10abf3b94 in IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x1ffb94)
    #53 0x10ac10255 in IPC::Connection::dispatchOneMessage() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x21c255)
    #54 0x10ac50eac in IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14::operator()() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x25ceac)
    #55 0x10ac50dd8 in WTF::Function<void ()>::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14>::call() (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/WebKit+0x25cdd8)
    #56 0x12ecd7470 in WTF::Function<void ()>::operator()() const (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x375f470)
    #57 0x12ed261a0 in WTF::RunLoop::performWork() (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x37ae1a0)
    #58 0x12ed271d1 in WTF::RunLoop::performWork(void*) (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x37af1d1)
    #59 0x7fff79d43980 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0xa7980)
    #60 0x7fff79d24a7c in __CFRunLoopDoSources0 (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x88a7c)
    #61 0x7fff79d23f75 in __CFRunLoopRun (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x87f75)
    #62 0x7fff79d23973 in CFRunLoopRunSpecific (/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation+0x87973)
    #63 0x7fff792afa5b in RunCurrentEventLoopInMode (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x30a5b)
    #64 0x7fff792af890 in ReceiveNextEventCommon (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x30890)
    #65 0x7fff792af6c5 in _BlockUntilNextEventMatchingListInModeWithFilter (/System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox+0x306c5)
    #66 0x7fff778555b3 in _DPSNextEvent (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x475b3)
    #67 0x7fff77fcfd6a in -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x7c1d6a)
    #68 0x7fff77849f34 in -[NSApplication run] (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x3bf34)
    #69 0x7fff7781484f in NSApplicationMain (/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit+0x684f)
    #70 0x7fff8f4df8c6 in _xpc_objc_main (/usr/lib/system/libxpc.dylib+0x108c6)
    #71 0x7fff8f4de2e3 in xpc_main (/usr/lib/system/libxpc.dylib+0xf2e3)
    #72 0x1058ebfb2 in main (WebKit/WebKitBuild/Debug/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent.Development+0x100001fb2)
    #73 0x7fff8f27b254 in start (/usr/lib/system/libdyld.dylib+0x5254)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (WebKit/WebKitBuild/Debug/JavaScriptCore.framework/Versions/A/JavaScriptCore+0x36db558) in WTFCrash
==41533==ABORTING
#CRASHED - com.apple.WebKit.WebContent.Development (pid 41533)
LEAK: 1 WebProcessPool
LEAK: 1 WebPageProxy

[Manuel Rego Casasnovas]

What a coincide, this has just been fixed today. :-)

*** This bug has been marked as a duplicate of bug 169739 ***

[Manuel Rego Casasnovas]

(In reply to comment #1)
> What a coincide, this has just been fixed today. :-)
s/coincide/coincidence/