[Bug 48732] How to Survive crashes on start (fullscreen mode)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48732

--- Comment #8 from Zebediah Figura <z.figura12 at gmail.com> ---
(In reply to Gabriel Ivăncescu from comment #6)
> Right, I was thinking the app does something weird like hook into SetParent.
> Or perhaps the call exposes a race condition of a deeper issue, which is a
> bigger concern. (this would just "hide" it)

That seems very unlikely, but if the patch really helps, I don't even know what
to think. I'd really like to figure out *why* the patch helps before accepting
it, honestly.

> I'm as puzzled as you are, but yes, that's where it happened for some
> reason; I added traces between each call to verify this. It could be an
> application bug, though (which is also silently ignored on Windows). I'm
> curious, do you not get this behavior when you try it? (I mean the refcount
> thing)

Oh, I didn't notice the first time, but apparently the application uses its own
presenter. I guess it must release a reference to the filter when its presenter
is destroyed. Native seems to handle that well enough, and I guess we do too.

I can reproduce the extra free, but I can't reproduce a crash.

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