[Webkit-unassigned] [Bug 49035] New: SVG <path> inside a <defs> is still marked as needing layout at the end of FrameView::layout

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=49035

           Summary: SVG <path> inside a <defs> is still marked as needing
                    layout at the end of FrameView::layout
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jamesr at chromium.org
                CC: zimmermann at kde.org, krit at webkit.org
            Blocks: 49019


The assertions in https://bugs.webkit.org/show_bug.cgi?id=49019 trigger on several SVG tests.  Here's a reduction of one of the issues that triggers on svg/custom/recursive-mask.svg:

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> 
<defs>
    <rect id="rect" x="0" y="100" width="50" height="50" fill="white" mask="url(#mask4)"/> 
    <mask id="mask4"> 
        <use xlink:href="#rect"/> 
    </mask>
</defs>
</svg>

At the end of FrameView::layout() the render tree looks like this:


RenderView 0x3dbc2d8                       #document    0x3e67420
  RenderSVGRoot 0x3eba5a8                  svg    0x3eb85c0
    RenderSVGHiddenContainer 0x3ebc6b8     defs    0x3ebc460
*     RenderSVGPath 0x3ebdde8              rect    0x3ebca40
      RenderSVGResourceMasker 0x3ec0168    mask    0x3ebfa40
        RenderSVGContainer 0x3daf418       use    0x3ebf260
          RenderSVGContainer 0x3db05b8     g    0x3daf4e0
            RenderSVGPath 0x3db0738        rect    0x3dafd90


and the RenderSVGPath associated with the <rect> is still marked as m_needsLayout.

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