[Bug 48297] Wineboot crashes on 64bit prefix creation (macOS wine built without mingw)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48297

Zebediah Figura <z.figura12 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTOURBUG

--- Comment #3 from Zebediah Figura <z.figura12 at gmail.com> ---
(In reply to Alexandre Julliard from comment #2)
> It's probably because clang generates calls to memcpy, memset etc. using the
> host calling convention. There doesn't seem to be a good way of avoiding
> that, so it may require clang patches.

Looks like that's indeed the case:

000a:000b:Call
setupapi.SetupDiGetDeviceInstallParamsW(004f0f40,0021e7a0,0021e558)
ret=738e5a72
000a:000b:trace:setupapi:SetupDiGetDeviceInstallParamsW devinfo
00000000004F0F40, device_data 000000000021E7A0, params 000000000021E558.
000a:000b:Call msvcrt.memcpy(7fff693d4f4a,00000248,00000002) ret=7020ef04
000a:000b:Call kernelbase.UnhandledExceptionFilter(0021d4a0) ret=7b45f553

0x248 is the size of SP_DEVINSTALL_PARAMS; it's being put in %rdx when it
should actually be in %r8. Resolving upstream.

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