[Bug 2867] New: Application specific crash (page fault): wvsnprintf16 in user32

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=2867

Summary: Application specific crash (page fault):  wvsnprintf16
                    in user32
           Product: Wine
           Version: 20050310
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-kernel
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Wine crashes every time with a particular application.
Here the log:
---------------------------------
/mnt/cdrom$ wine AUTORUN.EXE
Please use the registry key HKEY_CURRENT_CONFIG\Software\Fonts\LogPixels
to set the screen resolution and remove the "Resolution" entry in the config file
wine: Unhandled exception (thread 000e), starting debugger...
WineDbg starting on pid 0x8
fixme:dbghelp:SymLoadModule Should have successfully loaded debug information
for image Z:\mnt\cdrom\AUTORUN.EXE
Unhandled exception: page fault on read access to 0x00000000 in 32-bit code
(0x778d2255).
In 32 bit mode.
Register dump:
 CS:0073 SS:007b DS:007b ES:007b FS:003b GS:0033
 EIP:778d2255 ESP:769e6ed4 EBP:00000000 EFLAGS:00210202(   - 00      - -RI1)
 EAX:77c96016 EBX:77908fec ECX:77c96010 EDX:000002b4
 ESI:77c96016 EDI:00000400
Stack dump:
0x769e6ed4:  00001000 00000013 13b5ef87 77b8c862
0x769e6ee4:  77b8ccef 77b92b0a 77b5d3e1 00001597
0x769e6ef4:  00000001 00000013 00000001 139e6fa4
0x769e6f04:  000011af 77c1e688 00001000 00002002
0x769e6f14:  77b5ef87 77b5d659 00002002 77c966e0
0x769e6f24:  00001000 000011af 77c1e688 00001596
Backtrace:
=>1 0x778d2255 wvsnprintf16+0x25 in user32 (0x00000000)
0x778d2255 wvsnprintf16+0x25 in user32: movzbl  0x0(%ebp),%ecx
Wine-dbg>quit
WineDbg terminated on pid 0x8
-----------------------------------

The program: Emme English+ 1999 (a software to learn english)

My configuration:
- Wine 20050310 (it does not work with 20050211 too)
- Mandrake 10.1
- kernel 2.6.11.6
- athlon-xp 2500+

I can provide you some more debug information. The option --debugmsg (cf wine
manual) does not work but I read somewhere that we must set a environment
variable...