128541 2014-02-10 10:26:03 -0800 REGRESSION: svg/text/text-overflow-ellipsis-svgfont-kerning-ligatures.html frequently asserts in ComplexTextController::offsetForPosition 2014-02-10 14:47:26 -0800 1 1 1 Unclassified WebKit SVG 528+ (Nightly build) Unspecified Unspecified RESOLVED DUPLICATE 119747 MakingBotsRed, Regression P2 Normal --- 1 ap webkit-unassigned ap krit mitz mmaxfield rniwa zalan zimmermann oldest_to_newest 978950 0 ap 2014-02-10 10:26:03 -0800 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 978953 1 ap 2014-02-10 10:28:55 -0800 It's unclear when this regressed, who can investigate? Looking at recent changes, a rollout <http://trac.webkit.org/changeset/163655> seems like the only one that touched this code. 979076 2 ap 2014-02-10 14:47:26 -0800 The rollout is definitely the culprit, because the test was also asserting before those changes, and started to assert again once they got rolled out. *** This bug has been marked as a duplicate of bug 119747 ***