[Bug 38400] Files fail to save and open in BDCraft Cubik Lite/Pro

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=38400

--- Comment #12 from Dmitry Timoshkov <dmitry at baikal.ru> ---
(In reply to Bruno Jesus from comment #11)
> > It's a bug in the application, it works by a pure luck under Windows.
> > 
> > The app passes a not initialized ofn->lpstrFileTitle to GetSaveFileNameW().
> > Basically ofn->lpstrFileTitle points to the stack approximately 428 bytes
> > above the current stack pointer, and since Wine's GetSaveFileNameW() uses
> > more than 4096 bytes one of internal stack frames is guaranteed to be trashed
> > after copying file name to ofn->lpstrFileTitle.
> 
> Same as bug 35200 then, at least I remember seeing a similar issue there and
> I attempted to create a patch [1] in order to mitigate the situation by
> checking how close the pointer is to the struct. But my tests on Windows led
> to crashes proving it would also overwrite the bad memory pointer, as you
> say it works by pure luck.

Sounds pretty similar. 

> [1] https://bugs.winehq.org/attachment.cgi?id=52622&action=diff

I think that I've found a better (and easier) workaround.

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