[Webkit-unassigned] [Bug 227826] New: SVGInlineTextBox::acquirePaintingResource() should return false if the resource can't be applied

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=227826

            Bug ID: 227826
           Summary: SVGInlineTextBox::acquirePaintingResource() should
                    return false if the resource can't be applied
           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

We need ensure RenderSVGResource::postApplyResource() is called only if the corresponding RenderSVGResource::applyResource() succeeds. Otherwise the GraphicsContext stack state will be unbalanced.

RenderSVGResourcePattern::applyResource() calls GraphicsContext::save() only if it returns true. If it returns false and we call RenderSVGResourcePattern::postApplyResource(), GraphicsContext::restore() will be called for inexistent save().

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