[Bug 11796] New: Wedged X servers sometimes cause crash in has_opengl

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=11796

           Summary: Wedged X servers sometimes cause crash in has_opengl
           Product: Wine
           Version: CVS/GIT
          Platform: Other
        OS/Version: other
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: winex11.drv
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: dank at kegel.com


There's been a number of reports of crashes on startup like this:

Unhandled exception: page fault on read access to 0x00000000 in 32-bit code
(0xb7d5acb3).
=>1 0xb7d5acb3 strlen+0x33() in libc.so.6 (0x0033ee98)
  2 0x7eadc7c2 has_opengl+0x7c2() [dlls/winex11.drv/opengl.c:331] in winex11
(0x0033ef18)
  3 0x7eadd0e0 X11DRV_setup_opengl_visual+0x130(display=0x7c038790)
[dlls/winex11.drv/opengl.c:3384] in winex11 (0x0033eff8)

Here are some of the reports, with notes:

http://ubuntuforums.org/archive/index.php/t-679911.html
 wine-0.9.54, found that restarting X helped
http://forums.gentoo.org/viewtopic-p-4724099.html
 wine-0.9.53, ATI 9800, ati driver 8.443.1-r1
http://ge.ubuntuforums.com/showthread.php?t=679704
 wine-0.9.46, VIA VT8623 [Apollo CLE266] integrated CastleRock 
http://www.archivum.info/comp.emulators.ms-windows.wine/2007-07/msg00041.html
 wine-0.9.40, VIA Samuel 2 CPU
https://lists.ubuntu.com/archives/ubuntu-br/2007-November/030190.html
 Gutsy
http://forum.eve-ru.com/lofiversion/index.php/t4768-500.html
 ?

The crash seems to happen on the call to pglXQueryVersion.
I'll attach a possible patch to catch the crash and report
that opengl is broken.


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