[Bug 46870] League of Legends 8.12+ fails to start a game in Vista+ mode ( anticheat engine, SystemExtendedProcessInformation)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=46870

--- Comment #46 from Zebediah Figura <z.figura12 at gmail.com> ---
(In reply to Olivier F. R. Dierick from comment #43)
> (In reply to Zebediah Figura from comment #42)
> > Yes, I know, but I'm pretty sure it needs corresponding change to winegcc to
> > actually work. Moreover, I tested myself with a PIC build, and successfully
> > ran a custom match.
> 
> Hello,
> 
> Do you use optimization flags?
> 
> I don't, and according to comment 16 from bug 28140:
> 
> --- Quote ---
> the only case for '-fPIC' where a load of GOT register is emitted into
> prolog code is indeed "no optimization". Gcc seems to intentionally generate
> "bad" code here, including a redundant load of GOT register.
> --- Quote  ---

I do (default CFLAGS="-g -O2"), but I also recall explicitly examining hex
dumps for an issue related to hotpatching, and noting that GOT register load
was emitted as the first instruction. It may certainly be a matter of not being
used for certain functions, though. I'll try setting -O0 and see if that makes
the crash appear.

(In reply to Paul Gofman from comment #45)
> (In reply to Paul Gofman from comment #44)
> 
> > I suppose you can do that using this patch
> > made by Zebediah
> > (https://www.winehq.org/pipermail/wine-devel/2018-July/128940.html) and full
> > rebuild.
> 
> Sorry, please disregard this part, I am not sure this will work. I need to
> test this before suggesting.

IIRC that should work. The only reason that patch couldn't be committed is
because it causes warnings for every typedef that uses __stdcall.

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