[Bug 33125] Tomb Raider (2013) game freezes

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=33125

--- Comment #75 from Felix Hädicke <felixhaedicke at web.de> 2013-04-10 15:50:25 CDT ---
@thanoulas
Your description confuses me a little. Have you used clang (3.2) or GCC (4.8) -
these are different compilers - also for dlls/kernel32/sync.c and the rest, or
did you just use clang for winemac.drv?

I tried to compile only the unmodified dlls/kernel32/sync.c with clang 3.0
instead of GCC (the rest of Wine with GCC 4.7.2) with -O1 and again with -O3
and the game did not freeze.

Another thing I tried was to compile Wine without optimizations, only
dlls/kernel32/sync.c with optimization turned on. The bug was still there. Then
I turned on optimization only for CreateEventExW and the game did not freeze as
I had expected.

What I found out in my further investigations is that enabling optimizations
(-O1 is enough) for the following thre functions only (and not for all the rest
of Wine) makes the bug occur:
* CreateEventExW
* CreateSemaphoreW
* CreateSemaphoreExW
And if optimization is disabled for only one of these three functions, the
freeze is gone.

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