[Webkit-unassigned] [Bug 258096] [ iOS, macOS ] 2x media/track tests are a flaky crash.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258096

--- Comment #1 from Bri Harris <bharris9 at apple.com> ---
STDERR TEXT:

ASSERTION FAILED: firstChild()
/Volumes/Data/worker/Apple-Ventura-Debug-Build/build/Source/WebCore/rendering/RenderVTTCue.cpp(79) : bool WebCore::RenderVTTCue::initializeLayoutParameters(WebCore::LayoutUnit &, WebCore::LayoutUnit &)
1   0x151bf4550 WTFCrash
2   0x107f790f0 WebCore::NetworkResourcesData::ResourceData::hasContent() const
3   0x10915a110 WebCore::RenderVTTCue::initializeLayoutParameters(WebCore::LayoutUnit&, WebCore::LayoutUnit&)
4   0x109159cbc WebCore::RenderVTTCue::repositionCueSnapToLinesSet()
5   0x109159c44 WebCore::RenderVTTCue::layout()
6   0x1081e0af0 WebCore::RenderElement::layoutIfNeeded()
7   0x108f08a5c WebCore::RenderBlock::layoutPositionedObject(WebCore::RenderBox&, bool, bool)
8   0x108f075cc WebCore::RenderBlock::layoutPositionedObjects(bool, bool)
9   0x108f07150 WebCore::RenderBlock::simplifiedLayout()
10  0x108f21868 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
11  0x108f05788 WebCore::RenderBlock::layout()
12  0x1081e0af0 WebCore::RenderElement::layoutIfNeeded()
13  0x108f08a5c WebCore::RenderBlock::layoutPositionedObject(WebCore::RenderBox&, bool, bool)
14  0x108f075cc WebCore::RenderBlock::layoutPositionedObjects(bool, bool)
15  0x108f21f3c WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
16  0x108f05788 WebCore::RenderBlock::layout()
17  0x109015dc8 WebCore::RenderImage::layoutShadowContent(WebCore::LayoutSize const&)
18  0x1090159a8 WebCore::RenderImage::layout()
19  0x1090beb30 WebCore::RenderMedia::layout()
20  0x10915c294 WebCore::RenderVideo::layout()
21  0x1081e0af0 WebCore::RenderElement::layoutIfNeeded()
22  0x108f26958 WebCore::RenderBlockFlow::layoutModernLines(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
23  0x108f24350 WebCore::RenderBlockFlow::layoutInlineChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
24  0x108f22898 WebCore::RenderBlockFlow::layoutInFlowChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
25  0x108f21a90 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
26  0x108f05788 WebCore::RenderBlock::layout()
27  0x108f25470 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
28  0x108f246b0 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&)
29  0x108f228d4 WebCore::RenderBlockFlow::layoutInFlowChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
30  0x108f21a90 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
31  0x108f05788 WebCore::RenderBlock::layout()
com.apple.WebKit.WebContent.Development terminated (pid 34111) for reason: crash
LEAK: 1 WebPageProxy

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