[Webkit-unassigned] [Bug 47498] Crash while processing ill-formed SVG with cycles.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Oct 15 02:15:26 PDT 2010


--- Comment #8 from Nikolas Zimmermann <zimmermann at kde.org>  2010-10-15 02:15:25 PST ---
(From update of attachment 70819)
View in context: https://bugs.webkit.org/attachment.cgi?id=70819&action=review

> WebCore/rendering/SVGResources.cpp:166
> +        RenderSVGResourceType resourceType = container->resourceType();
> +        if (resourceType == PatternResourceType || resourceType == LinearGradientResourceType || resourceType == RadialGradientResourceType)
> +            return container;

This is dangerous, if the type doesn't match, it will now set hasPendingResource to true, before returning 0.
It's not a pending resource, it's just wrong resource type. So should definately add a "return 0" right after the "return container" statement, in case the types don't match.

> WebCore/rendering/SVGResources.cpp:475
> +    ASSERT(resourceType == FilterResourceType);

These asserts are really helpful, but there's no need to store them in a local variable, that would also save ossys suggestion to add ASSERT_UNUSED.
Just use ASSERT(filter->resourceType() == FilterResourceType).

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