[Webkit-unassigned] [Bug 103772] Teach OwnPtr and RefPtr to understand Arena'd objects

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=103772





--- Comment #13 from Maciej Stachowiak <mjs at apple.com>  2012-12-01 17:27:36 PST ---
(In reply to comment #12)
> > What I'm saying is that (to the best of my understanding) node() is null for anonymous objects but m_node is not.
> 
> Ah. Duh :).
> 
> > RenderWidget is again however lame:
> 
> This might explain bug 103784, cited above.
> 
> It's not clear to me how reference-counting RenderWidget works at all. After destroy(), the whole arena can be deleted, so the reference count seems meaningless :(.

I believe its refcounting works only in a limited set of circumstances, specifically for the use that RenderWidgetProtector makes of it.

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