[Webkit-unassigned] [Bug 258183] [ macOS ] media/track/track-cues-missed.html is a flaky test.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258183

--- Comment #2 from Bri Harris <bharris9 at apple.com> ---
STDERR TEXT:

ASSERTION FAILED: firstChild()
rendering/RenderVTTCue.cpp(79) : bool WebCore::RenderVTTCue::initializeLayoutParameters(WebCore::LayoutUnit &, WebCore::LayoutUnit &)
1   0x16bb34308 WTFCrash
2   0x10a9a0490 WTF::Ref<WebCore::AudioWorkletThread, WTF::RawPtrTraits<WebCore::AudioWorkletThread> >::operator->() const
3   0x10d7f4984 WebCore::RenderVTTCue::initializeLayoutParameters(WebCore::LayoutUnit&, WebCore::LayoutUnit&)
4   0x10d7f453c WebCore::RenderVTTCue::repositionCueSnapToLinesSet()
5   0x10d7f44c4 WebCore::RenderVTTCue::layout()
6   0x10c50ed1c WebCore::RenderElement::layoutIfNeeded()
7   0x10d539150 WebCore::RenderBlock::layoutPositionedObject(WebCore::RenderBox&, bool, bool)
8   0x10d537ce8 WebCore::RenderBlock::layoutPositionedObjects(bool, bool)
9   0x10d53787c WebCore::RenderBlock::simplifiedLayout()
10  0x10d551bd0 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
11  0x10d535f60 WebCore::RenderBlock::layout()
12  0x10c50ed1c WebCore::RenderElement::layoutIfNeeded()
13  0x10d539150 WebCore::RenderBlock::layoutPositionedObject(WebCore::RenderBox&, bool, bool)
14  0x10d537ce8 WebCore::RenderBlock::layoutPositionedObjects(bool, bool)
15  0x10d552298 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
16  0x10d535f60 WebCore::RenderBlock::layout()
17  0x10d668bf0 WebCore::RenderImage::layoutShadowContent(WebCore::LayoutSize const&)
18  0x10d6687dc WebCore::RenderImage::layout()
19  0x10d72e1fc WebCore::RenderMedia::layout()
20  0x10d7f6a78 WebCore::RenderVideo::layout()
21  0x10c50ed1c WebCore::RenderElement::layoutIfNeeded()
22  0x10d556b64 WebCore::RenderBlockFlow::layoutModernLines(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
23  0x10d5545ec WebCore::RenderBlockFlow::layoutInlineChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
24  0x10d552bc0 WebCore::RenderBlockFlow::layoutInFlowChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
25  0x10d551df0 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
26  0x10d535f60 WebCore::RenderBlock::layout()
27  0x10d5556d4 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
28  0x10d554934 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&)
29  0x10d552bfc WebCore::RenderBlockFlow::layoutInFlowChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
30  0x10d551df0 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
31  0x10d535f60 WebCore::RenderBlock::layout()
com.apple.WebKit.WebContent.Development terminated (pid 87878) for reason: crash
LEAK: 1 WebPageProxy

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