[Webkit-unassigned] [Bug 128541] New: REGRESSION: svg/text/text-overflow-ellipsis-svgfont-kerning-ligatures.html frequently asserts in ComplexTextController::offsetForPosition

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=128541

           Summary: REGRESSION:
                    svg/text/text-overflow-ellipsis-svgfont-kerning-ligatu
                    res.html frequently asserts in
                    ComplexTextController::offsetForPosition
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: MakingBotsRed, Regression
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org
                CC: mitz at webkit.org, zalan at apple.com, zimmermann at kde.org,
                    krit at webkit.org, mmaxfield at apple.com


svg/text/text-overflow-ellipsis-svgfont-kerning-ligatures.html has started to ASSERT very frequently on February 7th:

SHOULD NEVER BE REACHED
/Volumes/Data/slave/mavericks-debug/build/Source/WebCore/platform/graphics/mac/ComplexTextController.cpp(261) : int WebCore::ComplexTextController::offsetForPosition(float, bool)
1   0x111d834b0 WTFCrash
2   0x11307803c WebCore::ComplexTextController::offsetForPosition(float, bool)
3   0x113685942 WebCore::Font::offsetForPositionForComplexText(WebCore::TextRun const&, float, bool) const
4   0x113669506 WebCore::Font::offsetForPosition(WebCore::TextRun const&, float, bool) const
5   0x1139c7778 WebCore::InlineTextBox::offsetForPosition(float, bool) const
6   0x1139bfe3a WebCore::InlineTextBox::placeEllipsisBox(bool, float, float, float, float&, bool&)
7   0x1139b4fe9 WebCore::InlineFlowBox::placeEllipsisBox(bool, float, float, float, float&, bool&)
8   0x1146f141e WebCore::RootInlineBox::placeEllipsisBox(bool, float, float, float, float&, bool&)
9   0x1146f1276 WebCore::RootInlineBox::placeEllipsis(WTF::AtomicString const&, bool, float, float, float, WebCore::InlineBox*)
10  0x114414995 WebCore::RenderBlockFlow::checkLinesForTextOverflow()
11  0x114414085 WebCore::RenderBlockFlow::layoutLineBoxes(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
12  0x114ca0561 WebCore::RenderBlockFlow::layoutInlineChildren(bool, WebCore::LayoutUnit&, WebCore::LayoutUnit&)
13  0x114c9f394 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit)
14  0x1143d3e6d WebCore::RenderBlock::layout()
15  0x114ca2bbb WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&)

http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=svg%2Ftext%2Ftext-overflow-ellipsis-svgfont-kerning-ligatures.html

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