Bug 267993 – ASSERTION FAILED: containingBlock.isInFlowPositioned() while running `the-anchor-attribute-003-crash.tentative.html` WPT Test

• Component: Layout and Rendering
• Status: RESOLVED DUPLICATE

[Ahmad Saleem]

Hi Team,

While trying to import new tests in below PR:

PR - https://github.com/WebKit/WebKit/pull/23133

I noticed that on `mac-AS-debug-wk2`, I get above 'ASSERT failure.

Link - https://ews-build.s3-us-west-2.amazonaws.com/macOS-AppleSilicon-Sonoma-Debug-WK2-Tests-EWS/5e958523-8716-stress-mode/results.html

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ASSERTION FAILED: containingBlock.isInFlowPositioned()
/Volumes/Data/worker/macOS-AppleSilicon-Sonoma-Debug-Build-EWS/build/Source/WebCore/rendering/RenderBox.cpp(3895) : LayoutUnit WebCore::RenderBox::containingBlockLogicalWidthForPositioned(const RenderBoxModelObject &, RenderFragmentContainer *, bool) const
1   0x1384621b0 WTFCrash
2   0x2844bc1b0 WebCore::NetworkResourcesData::ResourceData::hasContent() const
3   0x28561d2d0 WebCore::RenderBox::containingBlockLogicalWidthForPositioned(WebCore::RenderBoxModelObject const&, WebCore::RenderFragmentContainer*, bool) const
4   0x28561711c WebCore::RenderBox::computePositionedLogicalWidth(WebCore::RenderBox::LogicalExtentComputedValues&, WebCore::RenderFragmentContainer*) const
5   0x2855d684c WebCore::RenderBox::computeLogicalWidthInFragment(WebCore::RenderBox::LogicalExtentComputedValues&, WebCore::RenderFragmentContainer*) const
6   0x285616fb4 WebCore::RenderBox::updateLogicalWidth()
7   0x2855d48c8 WebCore::RenderBlock::recomputeLogicalWidth()
8   0x2855f0278 WebCore::RenderBlockFlow::recomputeLogicalWidthAndColumnWidth()
9   0x2855f0e60 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
10  0x2855d4610 WebCore::RenderBlock::layout()
11  0x28567e5f0 WebCore::RenderElement::layoutIfNeeded()
12  0x2855d77e4 WebCore::RenderBlock::layoutPositionedObject(WebCore::RenderBox&, bool, bool)
13  0x2855d64b8 WebCore::RenderBlock::layoutPositionedObjects(bool, bool)
14  0x2855f15f8 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
15  0x2855d4610 WebCore::RenderBlock::layout()
16  0x2855f4b08 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
17  0x2855f3dd0 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&)
18  0x2855f2108 WebCore::RenderBlockFlow::layoutInFlowChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
19  0x2855f10a0 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
20  0x2855d4610 WebCore::RenderBlock::layout()
21  0x2855f4b08 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
22  0x2855f3dd0 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&)
23  0x2855f2108 WebCore::RenderBlockFlow::layoutInFlowChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
24  0x2855f10a0 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
25  0x2855d4610 WebCore::RenderBlock::layout()
26  0x28585d5d0 WebCore::RenderView::layout()
27  0x284aa34d4 WebCore::LocalFrameViewLayoutContext::performLayout()
28  0x284a81f70 WebCore::LocalFrameViewLayoutContext::layout()
29  0x283ae50e0 WebCore::Document::implicitClose()
30  0x28481cc2c WebCore::FrameLoader::checkCallImplicitClose()
31  0x28481c580 WebCore::FrameLoader::checkCompleted()
com.apple.WebKit.WebContent.Development terminated (pid 1086) for reason: crash
LEAK: 1 WebPageProxy

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Just wanted to raise so we can fix it.

Thanks!

[Ahmad Saleem]

Might be similar to this Blink fix:

Blink Commit - https://chromium.googlesource.com/chromium/src.git/+/b907c9c34c99ed5445d2f94a8ef4a2fbc85808f6

https://searchfox.org/wubkat/rev/11893003d47a7c29b0ce84a7479980ebf220c589/Source/WebCore/rendering/RenderBox.cpp#3892

Here changing:

return (boxInfo) ? std::max<LayoutUnit>(0, cb->clientLogicalWidth() - (cb->logicalWidth() - boxInfo->logicalWidth())) : cb->clientLogicalWidth();

to:

return (boxInfo) ? std::max<LayoutUnit>(0, cb->clientLogicalWidth() - (cb->logicalWidth() - boxInfo->logicalWidth())) : std::max<LayoutUnit>(0, cb->clientLogicalWidth());

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@Alan - any input?

[Ahmad Saleem]

(In reply to Ahmad Saleem from comment #1)
> Might be similar to this Blink fix:
> 
> Blink Commit -
> https://chromium.googlesource.com/chromium/src.git/+/
> b907c9c34c99ed5445d2f94a8ef4a2fbc85808f6
> 
> https://searchfox.org/wubkat/rev/11893003d47a7c29b0ce84a7479980ebf220c589/
> Source/WebCore/rendering/RenderBox.cpp#3892
> 
> Here changing:
> 
> return (boxInfo) ? std::max<LayoutUnit>(0, cb->clientLogicalWidth() -
> (cb->logicalWidth() - boxInfo->logicalWidth())) : cb->clientLogicalWidth();
> 
> to:
> 
> return (boxInfo) ? std::max<LayoutUnit>(0, cb->clientLogicalWidth() -
> (cb->logicalWidth() - boxInfo->logicalWidth())) : std::max<LayoutUnit>(0,
> cb->clientLogicalWidth());
> 
> ___
> 
> @Alan - any input?

This does not fix it. Test already locally.

[alan]

This looks like a stale assertion since 268161@main, when backdrop-filter started making an inline box forming a containing block for out-of-flow boxes.

[Vitaly Dyackhov]

Pull request: https://github.com/WebKit/WebKit/pull/23509

[Radar WebKit Bug Importer]

<rdar://problem/122003382>

[Ahmad Saleem]

*** Bug 268580 has been marked as a duplicate of this bug. ***

[Ben Schwartz]

When this bug is resolved, the test expectation set in 273955@main should be removed.

[Ahmad Saleem]

*** This bug has been marked as a duplicate of bug 268714 ***