[Webkit-unassigned] [Bug 75497] New: Assertion failure in WebCore::PropertyWrapper<WebCore::Length>::blend

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=75497

           Summary: Assertion failure in
                    WebCore::PropertyWrapper<WebCore::Length>::blend
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
               URL: http://www.cnn.com/video/
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: koivisto at iki.fi, simon.fraser at apple.com,
                    dino at apple.com


Go to http://www.cnn.com/video/ using ToT WebKit, we hit:


ASSERTION FAILED: !isUndefined()
/Volumes/Data/webkit/Source/WebCore/platform/Length.h(191) : bool WebCore::Length::isZero() const
1   0x101f5a551 WebCore::Length::isZero() const
2   0x101eb3fec WebCore::Length::blend(WebCore::Length const&, double) const
3   0x101ea8478 WebCore::blendFunc(WebCore::AnimationBase const*, WebCore::Length const&, WebCore::Length const&, double)
4   0x101eb479b WebCore::PropertyWrapper<WebCore::Length>::blend(WebCore::AnimationBase const*, WebCore::RenderStyle*, WebCore::RenderStyle const*, WebCore::RenderStyle const*, double) const
5   0x101eaf61b WebCore::AnimationBase::blendProperties(WebCore::AnimationBase const*, int, WebCore::RenderStyle*, WebCore::RenderStyle const*, WebCore::RenderStyle const*, double)
6   0x1026ad0d1 WebCore::ImplicitAnimation::animate(WebCore::CompositeAnimation*, WebCore::RenderObject*, WebCore::RenderStyle const*, WebCore::RenderStyle*, WTF::RefPtr<WebCore::RenderStyle>&)
7   0x102036653 WebCore::CompositeAnimation::animate(WebCore::RenderObject*, WebCore::RenderStyle*, WebCore::RenderStyle*)
8   0x101eca01e WebCore::AnimationController::updateAnimations(WebCore::RenderObject*, WebCore::RenderStyle*)
9   0x102d8e147 WebCore::RenderObject::setAnimatableStyle(WTF::PassRefPtr<WebCore::RenderStyle>)
10  0x102bfb813 WebCore::Node::setRenderStyle(WTF::PassRefPtr<WebCore::RenderStyle>)
11  0x10247c4b2 WebCore::Element::recalcStyle(WebCore::Node::StyleChange)
12  0x10247c82b WebCore::Element::recalcStyle(WebCore::Node::StyleChange)
13  0x10247c82b WebCore::Element::recalcStyle(WebCore::Node::StyleChange)
14  0x10247c82b WebCore::Element::recalcStyle(WebCore::Node::StyleChange)
15  0x10247c82b WebCore::Element::recalcStyle(WebCore::Node::StyleChange)
16  0x10247c82b WebCore::Element::recalcStyle(WebCore::Node::StyleChange)
17  0x10247c82b WebCore::Element::recalcStyle(WebCore::Node::StyleChange)
18  0x1022b8f8e WebCore::Document::recalcStyle(WebCore::Node::StyleChange)
19  0x1022ba280 WebCore::Document::updateStyleIfNeeded()
20  0x1022b2681 WebCore::Document::updateLayout()
21  0x1022ba127 WebCore::Document::updateLayoutIgnorePendingStylesheets()
22  0x10247e7b2 WebCore::Element::offsetWidth()
23  0x102878a39 WebCore::jsElementOffsetWidth(JSC::ExecState*, JSC::JSValue, JSC::Identifier const&)
24  0x100026dba JSC::PropertySlot::getValue(JSC::ExecState*, JSC::Identifier const&) const
25  0x10003125e JSC::JSValue::get(JSC::ExecState*, JSC::Identifier const&, JSC::PropertySlot&) const
26  0x1001220ca cti_op_get_by_id_self_fail
27  0x100119f80 jscGeneratedNativeCode
28  0x1000f88c8 JSC::JITCode::execute(JSC::RegisterFile*, JSC::ExecState*, JSC::JSGlobalData*)
29  0x1000f264f JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
30  0x100066bcf JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)
31  0x1027b955a WebCore::JSMainThreadExecState::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&)

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