Bug#415292: libgl1-mesa-glx: assertion failure in libGL.so.1

[Nikita V. Youshchenko]

> On Sun, Mar 18, 2007 at 19:00:46 +0300, Nikita V. Youshchenko wrote:
> > > Could you try with libgl1-mesa-glx 6.5.2-3 currently in
> > > experimental? The FIXME code seems to still be there, but maybe
> > > something else has been added to work around the problem...
> > >
> > > If it still fails, it should be reported upstream.
> >
> > Yes, same thing with version from experimental.
>
> Hi Nikita,
>
> could you install the -dbg package and get a stack trace with gdb when
> the problem happens?

It's not that easy with wine :(, since it operates with non-ELF executable 
formats, and gdb is confused and does not show anything useful:

...
e/skel/c/windows/winhelp.exe: glxcmds.c:343: CreateContext: Assertion 
`mode != ((void *)0)' failed.

Program received signal SIGABRT, Aborted.
0xb7f07410 in ?? ()
(gdb) where
#0  0xb7f07410 in ?? ()
#1  0x0033ec38 in ?? ()
#2  0x00000006 in ?? ()
#3  0x00006cfb in ?? ()
#4  0xb7caa811 in ?? () from /lib/tls/i686/cmov/libc.so.6
#5  0xb7cabfb9 in srandom_r () from /lib/tls/i686/cmov/libc.so.6
#6  0x00000006 in ?? ()
#7  0x0033ecd8 in ?? ()
#8  0x00000000 in ?? ()

Wine's internal debugger shows more:

Backtrace:
=>1 0xb7ffd410 (0x0034ecb8)
  2 0xb7da1fb9 abort+0x109 in libc.so.6 (0x0034ede4)
  3 0xb7d99fbf __assert_fail+0x10f in libc.so.6 (0x0034ee28)
  4 0x7e71aac6 in libgl.so.1 (+0x1cac6) (0x0034ee68)
  5 0x7e71abf2 glXCreateContext+0x32 in libgl.so.1 (0x0034ee88)
  6 0x7e8e7c2a in winex11 (+0x37c2a) (0x0034ef08)
  7 0x7e8e839a X11DRV_setup_opengl_visual+0x3a in winex11 (0x0034ef98)
  8 0x7e8fdc11 in winex11 (+0x4dc11) (0x0034f0e8)
  9 0x7e90dd95 in winex11 (+0x5dd95) (0x0034f108)
  10 0x7bc37d55 call_dll_entry_point+0x15 in ntdll (0x0034f128)
  11 0x7bc38e49 in ntdll (+0x28e49) (0x0034f1d8)
  12 0x7bc392fd in ntdll (+0x292fd) (0x0034f218)
  13 0x7bc3b447 LdrLoadDll+0x87 in ntdll (0x0034f248)
  14 0x7b86089b in kernel32 (+0x4089b) (0x0034f498)
  15 0x7b860a9c LoadLibraryExW+0x4c in kernel32 (0x0034f4c8)
  16 0x7b860bc1 LoadLibraryExA+0x41 in kernel32 (0x0034f4e8)
  17 0x7b860bf9 LoadLibraryA+0x29 in kernel32 (0x0034f508)
  18 0x7ec265a0 DRIVER_load_driver+0x1c0 in gdi32 (0x0034f678)
  19 0x7ec2222e CreateDCW+0x6e in gdi32 (0x0034f928)
  20 0x7ecee9ff CreateIconFromResourceEx+0x45f in user32 (0x0034f9d8)
  21 0x7ecef3af in user32 (+0x2f3af) (0x0034fa38)
  22 0x7ecef91d LoadImageW+0x42d in user32 (0x0034fae8)
  23 0x7ecf0053 LoadImageA+0x53 in user32 (0x0034fbc8)
  24 0x7ecf02f2 LoadCursorA+0x42 in user32 (0x0034fbf8)
  25 0x7ece5f45 in user32 (+0x25f45) (0x0034fc28)
  26 0x7ece5f9d CLASS_RegisterBuiltinClasses+0x1d in user32 (0x0034fc38)
  27 0x7ed59fe1 in user32 (+0x99fe1) (0x0034fcb8)
  28 0x7ed6cde5 in user32 (+0xacde5) (0x0034fcd8)
  29 0x7bc37d55 call_dll_entry_point+0x15 in ntdll (0x0034fcf8)
  30 0x7bc38e49 in ntdll (+0x28e49) (0x0034fda8)
  31 0x7bc392fd in ntdll (+0x292fd) (0x0034fde8)
  32 0x7bc39242 in ntdll (+0x29242) (0x0034fe28)
  33 0x7bc3c102 LdrInitializeThunk+0x382 in ntdll (0x0034ff08)
  34 0x7b86ee75 in kernel32 (+0x4ee75) (0x0034ffe8)
  35 0xb7ec37a7 wine_switch_to_stack+0x17 in libwine.so.1 (0x00000000)

That's enough to find point inside wine sources from where call to libGL 
happens, in is inside X11DRV_setup_opengl_visual().

Nikita
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