[Webkit-unassigned] [Bug 99796] New: ASSERTION FAILED: m_next in LayoutState.cpp

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=99796

           Summary: ASSERTION FAILED: m_next in LayoutState.cpp
           Product: WebKit
           Version: 420+
          Platform: Unspecified
               URL: https://svgwg.org/svg2-draft/single-page.html
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: MathML
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: pdr at google.com
                CC: krit at webkit.org, dbarton at mathscribe.com


We assert on the SVG2 draft page: https://svgwg.org/svg2-draft/single-page.html.

I think it's likely this is related to MathML.

Debug assert:
ASSERTION FAILED: m_next
../../third_party/WebKit/Source/WebCore/rendering/LayoutState.cpp(49) : WebCore::LayoutState::LayoutState(WebCore::LayoutState *, WebCore::RenderBox *, const LayoutSize &, LayoutUnit, bool, WebCore::ColumnInfo *)
1   0x2cffb33 WebCore::LayoutState::LayoutState(WebCore::LayoutState*, WebCore::RenderBox*, WebCore::FractionalLayoutSize const&, WebCore::FractionalLayoutUnit, bool, WebCore::ColumnInfo*)
2   0x2cff984 WebCore::LayoutState::LayoutState(WebCore::LayoutState*, WebCore::RenderBox*, WebCore::FractionalLayoutSize const&, WebCore::FractionalLayoutUnit, bool, WebCore::ColumnInfo*)
3   0x2dd5cb5 WebCore::RenderView::pushLayoutState(WebCore::RenderBox*, WebCore::FractionalLayoutSize const&, WebCore::FractionalLayoutUnit, bool, WebCore::ColumnInfo*)
4   0x2dd5a5f WebCore::LayoutStateMaintainer::push(WebCore::RenderBox*, WebCore::FractionalLayoutSize, WebCore::FractionalLayoutUnit, bool, WebCore::ColumnInfo*)
5   0x2dd592d WebCore::LayoutStateMaintainer::LayoutStateMaintainer(WebCore::RenderView*, WebCore::RenderBox*, WebCore::FractionalLayoutSize, bool, WebCore::FractionalLayoutUnit, bool, WebCore::ColumnInfo*)
6   0x2dc65a4 WebCore::LayoutStateMaintainer::LayoutStateMaintainer(WebCore::RenderView*, WebCore::RenderBox*, WebCore::FractionalLayoutSize, bool, WebCore::FractionalLayoutUnit, bool, WebCore::ColumnInfo*)
7   0x2e29e07 WebCore::RenderFlexibleBox::layoutBlock(bool, WebCore::FractionalLayoutUnit)
8   0x2d09565 WebCore::RenderBlock::layout()
9   0x2f31599 WebCore::RenderObject::layoutIfNeeded()
10  0x3020c1f WebCore::RenderMathMLBlock::computeChildrenPreferredLogicalHeights()
11  0x3026fd3 WebCore::RenderMathMLRow::computePreferredLogicalWidths()
12  0x2dabdd2 WebCore::RenderBox::maxPreferredLogicalWidth() const
13  0x3020b61 WebCore::RenderMathMLBlock::computeChildrenPreferredLogicalHeights()
14  0x3026fd3 WebCore::RenderMathMLRow::computePreferredLogicalWidths()
15  0x2dabd42 WebCore::RenderBox::minPreferredLogicalWidth() const
16  0x2d2baaa WebCore::RenderBlock::computeInlinePreferredLogicalWidths()
17  0x2d2ac8e WebCore::RenderBlock::computePreferredLogicalWidths()
18  0x2f8f4c1 WebCore::RenderTableCell::computePreferredLogicalWidths()
19  0x2c9a636 WebCore::AutoTableLayout::recalcColumn(unsigned int)
20  0x2c9b3fe WebCore::AutoTableLayout::fullRecalc()
21  0x2c9b485 WebCore::AutoTableLayout::computePreferredLogicalWidths(WebCore::FractionalLayoutUnit&, WebCore::FractionalLayoutUnit&)
22  0x2f867ca WebCore::RenderTable::computePreferredLogicalWidths()
23  0x2dabd42 WebCore::RenderBox::minPreferredLogicalWidth() const
24  0x2d2c9b1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths()
25  0x2d2aca1 WebCore::RenderBlock::computePreferredLogicalWidths()
26  0x2dabd42 WebCore::RenderBox::minPreferredLogicalWidth() const
27  0x2d2c9b1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths()
28  0x2d2aca1 WebCore::RenderBlock::computePreferredLogicalWidths()
29  0x2dabd42 WebCore::RenderBox::minPreferredLogicalWidth() const
30  0x2d2c9b1 WebCore::RenderBlock::computeBlockPreferredLogicalWidths()
31  0x2d2aca1 WebCore::RenderBlock::computePreferredLogicalWidths()

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