[Webkit-unassigned] [Bug 222720] REGRESSION(r272900): Nullptr crash in ComposedTreeIterator::traverseNextInShadowTree() via ShadowRoot::hostChildElementDidChange

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222720

--- Comment #35 from Carlos Garcia Campos <cgarcia at igalia.com> ---
(In reply to Ryosuke Niwa from comment #34)
> Comment on attachment 423480 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=423480&action=review
> 
> > Source/WebCore/dom/ComposedTreeIterator.cpp:167
> > +            // FIXME: assignedNode->parentElement() can be nullptr.
> 
> r- because this is clearly wrong as Antti says.

But that's a pre-existing bug, just revealed by this one because Darin asked me to add the assert on the parent element. I opened bug #223378 to fix that case.

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