[Webkit-unassigned] [Bug 86715] New: [Chromium] REGRESSION: Assertion failure on svg/custom/acid3-test-77.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=86715

           Summary: [Chromium] REGRESSION: Assertion failure on
                    svg/custom/acid3-test-77.html
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: morrita at google.com
                CC: zimmermann at kde.org, pdr at google.com,
                    schenney at chromium.org


http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=svg%2Fcustom%2Facid3-test-77.html
Culprit is: http://trac.webkit.org/changeset/105057
Note that this doesn't crash on Apple Mac.

I didn't revert the original change since it also fixed another problem...

Here is a stacktrace:
----
00:33:18.801 14746   ASSERTION FAILED: m_purgePreventCount
00:33:18.801 14746   third_party/WebKit/Source/WebCore/platform/graphics/FontCache.cpp(280) : WebCore::SimpleFontData* WebCore::FontCache::getCachedFontData(const WebCore::FontPlatformData*, WebCore::FontCache::ShouldRetain)
...
00:33:18.804 14746   [15999:15999:4617000855690:ERROR:process_util_posix.cc(143)] Received signal 11
00:33:18.804 14746       base::debug::StackTrace::StackTrace() [0x8625be]
00:33:18.804 14746       base::(anonymous namespace)::StackDumpSignalHandler() [0x822729]
00:33:18.804 14746       0x7f0333922af0
00:33:18.804 14746       WebCore::FontCache::getCachedFontData() [0x1103fcc]
00:33:18.804 14746       WebCore::FontCache::getFontDataForCharacters() [0x11d2f2c]
00:33:18.804 14746       WebCore::Font::glyphDataAndPageForCharacter() [0x1112631]
00:33:18.804 14746       WebCore::Font::glyphDataForCharacter() [0x1111c34]
00:33:18.805 14746       WebCore::WidthIterator::glyphDataForCharacter() [0x11491d8]
00:33:18.805 14746       WebCore::WidthIterator::advance() [0x114942c]
00:33:18.805 14746       WebCore::SVGTextMetricsBuilder::advanceSimpleText() [0x1daf29a]
00:33:18.805 14746       WebCore::SVGTextMetricsBuilder::advance() [0x1daf239]
00:33:18.805 14746       WebCore::SVGTextMetricsBuilder::measureTextRenderer() [0x1dafb70]
00:33:18.805 14746       WebCore::SVGTextMetricsBuilder::walkTree() [0x1dafc80]
00:33:18.805 14746       WebCore::SVGTextMetricsBuilder::buildMetricsAndLayoutAttributes() [0x1dafe1b]
00:33:18.805 14746       WebCore::SVGTextLayoutAttributesBuilder::buildLayoutAttributesForTextRenderer() [0x1da836b]
00:33:18.805 14746       WebCore::RenderSVGText::subtreeChildWasAdded() [0x1d8a53d]
00:33:18.805 14746       WebCore::RenderSVGText::addChild() [0x1d8c020]
00:33:18.805 14746       WebCore::NodeRendererFactory::createRendererIfNeeded() [0x774be0]
00:33:18.805 14746       WebCore::Node::createRendererIfNeeded() [0x7563c1]
00:33:18.806 14746       WebCore::Text::attach() [0x7a709a]
00:33:18.806 14746       WebCore::updateTreeAfterInsertion() [0x6c255d]
00:33:18.806 14746       WebCore::ContainerNode::appendChild() [0x6c05cd]
00:33:18.806 14746       WebCore::Node::setTextContent() [0x758919]
00:33:18.806 14746       WebCore::NodeV8Internal::textContentAttrSetter() [0x1cd152c]
00:33:18.806 14746       v8::internal::JSObject::SetPropertyWithCallback() [0xc82ba7]
00:33:18.806 14746       v8::internal::JSObject::SetPropertyForResult() [0xc86589]
00:33:18.806 14746       v8::internal::JSReceiver::SetProperty() [0xc84b29]
00:33:18.806 14746       v8::internal::JSReceiver::SetProperty() [0xc828ac]
00:33:18.806 14746       v8::internal::StoreIC::Store() [0xebe4dc]
00:33:18.806 14746       v8::internal::StoreIC_Miss() [0xec113a]
00:33:18.806 14746       0x214759a0618e

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