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<base href="https://bugs.webkit.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - LayoutTest crashes in WebCore::InlineBox::InlineBoxBitfields::isHorizontal() const + 8"
href="https://bugs.webkit.org/show_bug.cgi?id=163585">163585</a>
</td>
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<tr>
<th>Summary</th>
<td>LayoutTest crashes in WebCore::InlineBox::InlineBoxBitfields::isHorizontal() const + 8
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>WebKit Nightly Build
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>OS</th>
<td>Unspecified
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ryanhaddad@apple.com
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=291920" name="attach_291920" title="Crashlog">attachment 291920</a> <a href="attachment.cgi?id=291920&action=edit" title="Crashlog">[details]</a></span>
Crashlog
I've seen a few different tests crashing in WebCore::InlineBox::InlineBoxBitfields::isHorizontal() const + 8
imported/w3c/web-platform-tests/html/semantics/embedded-content/media-elements/interfaces/TextTrack/activeCues.html is the test that I've seen in results most often, but it is not the test that is referenced in the crashlog.
<a href="https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK2%20(Tests)/r207453%20(8889)/results.html">https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK2%20(Tests)/r207453%20(8889)/results.html</a>
<a href="https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Finterfaces%2FTextTrack%2FactiveCues.html">https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fhtml%2Fsemantics%2Fembedded-content%2Fmedia-elements%2Finterfaces%2FTextTrack%2FactiveCues.html</a>
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.WebCore 0x000000010b8c53e8 WebCore::InlineBox::InlineBoxBitfields::isHorizontal() const + 8 (InlineBox.h:341)
1 com.apple.WebCore 0x000000010b8c4ecc WebCore::InlineBox::isHorizontal() const + 28 (InlineBox.h:104)
2 com.apple.WebCore 0x000000010b8c4e09 WebCore::InlineBox::height() const + 25 (InlineBox.h:176)
3 com.apple.WebCore 0x000000010cc26bd8 WebCore::RenderVTTCue::initializeLayoutParameters(WebCore::InlineFlowBox*&, WebCore::LayoutUnit&, WebCore::LayoutUnit&) + 296 (RenderVTTCue.cpp:89)
4 com.apple.WebCore 0x000000010cc267ce WebCore::RenderVTTCue::repositionCueSnapToLinesSet() + 62 (RenderVTTCue.cpp:314)
5 com.apple.WebCore 0x000000010cc26756 WebCore::RenderVTTCue::layout() + 358 (RenderVTTCue.cpp:61)
6 com.apple.WebCore 0x000000010b342a0c WebCore::RenderElement::layoutIfNeeded() + 60 (RenderElement.h:131)
7 com.apple.WebCore 0x000000010c880af4 WebCore::RenderBlock::layoutPositionedObject(WebCore::RenderBox&, bool, bool) + 548 (RenderBlock.cpp:1486)
8 com.apple.WebCore 0x000000010c880569 WebCore::RenderBlock::layoutPositionedObjects(bool, bool) + 185 (RenderBlock.cpp:1506)
9 com.apple.WebCore 0x000000010c8bb7e1 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) + 2305 (RenderBlockFlow.cpp:526)
10 com.apple.WebCore 0x000000010c87ed49 WebCore::RenderBlock::layout() + 105 (RenderBlock.cpp:1079)
11 com.apple.WebCore 0x000000010cc09291 WebCore::RenderView::layoutContent(WebCore::LayoutState const&) + 97 (RenderView.cpp:245)
12 com.apple.WebCore 0x000000010cc0a331 WebCore::RenderView::layout() + 2097 (RenderView.cpp:372)
13 com.apple.WebCore 0x000000010b4a7194 WebCore::FrameView::layout(bool) + 3812 (FrameView.cpp:1464)
14 com.apple.WebCore 0x000000010b4b3dd9 WebCore::FrameView::updateLayoutAndStyleIfNeededRecursive() + 121 (FrameView.cpp:4288)
15 com.apple.WebKit 0x00000001041bf19b WebKit::WebPage::layoutIfNeeded() + 107 (WebPage.cpp:1358)
16 com.apple.WebKit 0x0000000103f7528c WebKit::TiledCoreAnimationDrawingArea::flushLayers() + 124 (TiledCoreAnimationDrawingArea.mm:406)
17 com.apple.WebKit 0x0000000103f75aec non-virtual thunk to WebKit::TiledCoreAnimationDrawingArea::flushLayers() + 28 (TiledCoreAnimationDrawingArea.mm:397)
18 com.apple.WebCore 0x000000010c4899b5 WebCore::LayerFlushScheduler::layerFlushCallback() + 101 (LayerFlushSchedulerMac.cpp:77)
19 com.apple.WebCore 0x000000010c48acbb WebCore::LayerFlushScheduler::LayerFlushScheduler(WebCore::LayerFlushSchedulerClient*)::$_0::operator()() const + 59 (LayerFlushSchedulerMac.cpp:65)
20 com.apple.WebCore 0x000000010c48ac6d _ZNSt3__128__invoke_void_return_wrapperIvE6__callIJRZN7WebCore19LayerFlushSchedulerC1EPNS3_25LayerFlushSchedulerClientEE3$_0EEEvDpOT_ + 45 (__functional_base:441)
21 com.apple.WebCore 0x000000010c48ac0c std::__1::__function::__func<WebCore::LayerFlushScheduler::LayerFlushScheduler(WebCore::LayerFlushSchedulerClient*)::$_0, std::__1::allocator<WebCore::LayerFlushScheduler::LayerFlushScheduler(WebCore::LayerFlushSchedulerClient*)::$_0>, void ()>::operator()() + 44 (functional:1407)
22 com.apple.WebCore 0x000000010aa10b3a std::__1::function<void ()>::operator()() const + 26 (functional:1793)
23 com.apple.WebCore 0x000000010ccb279e WebCore::RunLoopObserver::runLoopObserverFired() + 110 (RunLoopObserver.cpp:45)
24 com.apple.WebCore 0x000000010ccb2720 WebCore::RunLoopObserver::runLoopObserverFired(__CFRunLoopObserver*, unsigned long, void*) + 32 (RunLoopObserver.cpp:39)
25 com.apple.CoreFoundation 0x00007fff92705067 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
26 com.apple.CoreFoundation 0x00007fff92704fd7 __CFRunLoopDoObservers + 391
27 com.apple.CoreFoundation 0x00007fff926e3ef8 CFRunLoopRunSpecific + 328
28 com.apple.HIToolbox 0x00007fff9402c935 RunCurrentEventLoopInMode + 235
29 com.apple.HIToolbox 0x00007fff9402c76f ReceiveNextEventCommon + 432
30 com.apple.HIToolbox 0x00007fff9402c5af _BlockUntilNextEventMatchingListInModeWithFilter + 71
31 com.apple.AppKit 0x00007fff98ef4df6 _DPSNextEvent + 1067
32 com.apple.AppKit 0x00007fff98ef4226 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
33 com.apple.AppKit 0x00007fff98ee8d80 -[NSApplication run] + 682
34 com.apple.AppKit 0x00007fff98eb2368 NSApplicationMain + 1176
35 libxpc.dylib 0x00007fff9d97a194 _xpc_objc_main + 795
36 libxpc.dylib 0x00007fff9d978bbe xpc_main + 494
37 com.apple.WebKit.WebContent 0x0000000103a58080 main + 800
38 libdyld.dylib 0x00007fff8b2445ad start + 1</pre>
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