[Webkit-unassigned] [Bug 49866] Assert hit in WebCore::invalidateResourcesOfChildren in SVGRenderSupport.cpp

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=49866





--- Comment #3 from Nikolas Zimmermann <zimmermann at kde.org>  2010-11-20 09:46:04 PST ---
(In reply to comment #2)
> (In reply to comment #0)
> > The following testcase triggers this assert:
> > 
> > <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
> > <rect id="rect" x="0" y="100" width="50" height="50" fill="white" mask="url(#mask4)"/> 
> > <defs>
> >      <mask id="mask4">
> >     </mask>
> > </defs>
> > </svg>
> > 
> > Though this unusual SVG, I am pretty sure it is valid.
> > Cheers,
> > 
> > Rob.
> 
> If I reference the rect after the <defs> section by a <use> element, the test works, but if it is before this section, it asserts as well. So it might be a problem that the parsing of the document did not finished and the resources are unknown. Note, this only happens for mask and filter, but not for clipper, gradient or pattern.

<use> elements are way trickier to understand. The attach time is different, the <use> rendering subtree is built delayed, so the layout flow is completly different than using no <use> element.

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