[Bug 40297] New: Multiple app crashes in macdrv_EnumDisplayMonitors

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=40297

            Bug ID: 40297
           Summary: Multiple app crashes in macdrv_EnumDisplayMonitors
           Product: Wine
           Version: 1.9.5
          Hardware: x86
                OS: Mac OS X
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: zakk at rsdio.com

Created attachment 53935
  --> https://bugs.winehq.org/attachment.cgi?id=53935
Deathsmiles crash backtrace

The steam games Mushihimesama and Deathsmiles both crash on start with the
attached logs and backtrace (attachments are for Deathsmiles). This games are
both by the same developer so they are likely tickling the same bug.

I've done some additional testing and this is what I've found:

It crashes with all the pre-packaged version of wine for OSX, going back to
1.9.0
It crashes if I use brew to install wine (brew install wine --devel)
It crashes if I compile my own wine from a clean source tree; using the latest
XCode under OSX 10.11.3 (SDK 10.11)

As a final test I cobbled together a build environment that's somewhat close to
the WineSkin engine build environment. This uses gcc-4.2 and the OSX 10.6 SDK.

When compiled this way it DOES NOT crash, and everything works great.

I also took this build environment and used clang instead of gcc-4.2 (so the
SDK was still 10.6); the resulting wine CRASHES in the same way as the others.

It seems clang may be the issue, or at least some factor in allowing other
issues to cause a crash?

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