[Webkit-unassigned] [Bug 196518] New: REGRESSION (r220717): Assertion fires when animating an SVG rounded corner rect till it collapses

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196518

            Bug ID: 196518
           Summary: REGRESSION (r220717): Assertion fires when animating
                    an SVG rounded corner rect till it collapses
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: zimmermann at kde.org

Created attachment 366556

  --> https://bugs.webkit.org/attachment.cgi?id=366556&action=review

test case

Open the attached test case and WebKit will fire this assertion:

ASSERTION FAILED: hasPath()
rendering/svg/RenderSVGShape.cpp(94) : virtual bool WebCore::RenderSVGShape::isEmpty() const
1   0x11f9ab139 WTFCrash
2   0x10e9c2cfb WTFCrashWithInfo(int, char const*, char const*, int)
3   0x1123e5a4b WebCore::RenderSVGShape::isEmpty() const
4   0x1123af24d WebCore::RenderSVGRect::isEmpty() const
5   0x1123e70cb WebCore::RenderSVGShape::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
6   0x1123e3ccd WebCore::RenderSVGRoot::paintReplaced(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
7   0x1121f8608 WebCore::RenderReplaced::paint(WebCore::PaintInfo&, WebCore::LayoutPoint const&)
8   0x11214c577 WebCore::RenderLayer::paintForegroundForFragmentsWithPhase(WebCore::PaintPhase, WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul> const&, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::RenderObject*)
9   0x11214a0b7 WebCore::RenderLayer::paintForegroundForFragments(WTF::Vector<WebCore::LayerFragment, 1ul, WTF::CrashOnOverflow, 16ul> const&, WebCore::GraphicsContext&, WebCore::GraphicsContext&, WebCore::LayoutRect const&, bool, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::PaintBehavior>, WebCore::RenderObject*)
10  0x112145a70 WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>)
11  0x112144c9e WebCore::RenderLayer::paintLayerContentsAndReflection(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>)
12  0x1121432c7 WebCore::RenderLayer::paintLayer(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>)
13  0x112149ae7 WebCore::RenderLayer::paintList(WebCore::RenderLayer::LayerList, WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>)
14  0x112145b7c WebCore::RenderLayer::paintLayerContents(WebCore::GraphicsContext&, WebCore::RenderLayer::LayerPaintingInfo const&, WTF::OptionSet<WebCore::RenderLayer::PaintLayerFlag>)
15  0x112166293 WebCore::RenderLayerBacking::paintIntoLayer(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, WebCore::IntRect const&, WTF::OptionSet<WebCore::PaintBehavior>, unsigned char)
16  0x11216683f WebCore::RenderLayerBacking::paintContents(WebCore::GraphicsLayer const*, WebCore::GraphicsContext&, unsigned char, WebCore::FloatRect const&, unsigned int)
17  0x111bfb2c6 WebCore::GraphicsLayer::paintGraphicsLayerContents(WebCore::GraphicsContext&, WebCore::FloatRect const&, unsigned int)
18  0x111c7530c WebCore::GraphicsLayerCA::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&, unsigned int)
19  0x10f08af35 WebCore::PlatformCALayer::drawLayerContents(CGContext*, WebCore::PlatformCALayer*, WTF::Vector<WebCore::FloatRect, 5ul, WTF::CrashOnOverflow, 16ul>&, unsigned int)
20  0x111cb2c1e WebCore::TileGrid::platformCALayerPaintContents(WebCore::PlatformCALayer*, WebCore::GraphicsContext&, WebCore::FloatRect const&, unsigned int)
21  0x10f2c56d1 -[WebSimpleLayer drawInContext:]
22  0x7fff4c011aaf CABackingStoreUpdate_
23  0x7fff4c073325 invocation function for block in CA::Layer::display_()
24  0x7fff4c010c90 -[CALayer _display]
25  0x10f2c54bb -[WebSimpleLayer display]
26  0x7fff4c0101bc CA::Layer::display_if_needed(CA::Transaction*)
27  0x7fff4bffe447 CA::Context::commit_transaction(CA::Transaction*)
28  0x7fff4bffdd20 CA::Transaction::commit()
29  0x7fff4bffda2c CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*)
30  0x7fff410ba709 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__
31  0x7fff410ba63e __CFRunLoopDoObservers
LEAK: 1 WebPageProxy

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