[Bug 10503] Sid Meier's Alpha Centauri: Wine segfaults when clicking on a city.

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=10503





--- Comment #11 from Anastasius Focht <focht at gmx.net>  2007-11-20 15:50:57 ---
Hello,

--- quote ---
Well, the game actually has parts of the drawing code written in asm to speed
the game up. This is how it achieved the "3d" voxels with ancient hardware :)
It was probably good at the time, but we are suffering from it now. Whether
this has anything to do with the problem it is a good chance. I don't think
MSVC is at fault here.
--- quote ---

Well that code chunks abusing ESP are actually part of very large functions
with many branches and subroutine calls.
These functions have ~2000 "flat" lines of code (without subs) and ~50
variables.
That *really* doesn't look like hand optimized assembler code. Would be a
nightmare to manage.

--- quote ---
This bug can be fixed with the dib engine, if we don't want to rework the fault
handler. See my code at http://repo.or.cz/w/wine/dibdrv.git
--- quote ---

Very nice! I wasn't aware of that project.
Looking forward to the day when your DIB driver gets included in official wine
tree (getting rid of trouble making DIB fault handler) ;-)

Regards


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