[Bug 2148] New: crash in x11drv using Internet Explorer 6

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=2148

Summary: crash in x11drv using Internet Explorer 6
           Product: Wine
           Version: CVS
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: wine-x11driver
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

I experiment random crashes using Internet Explorer 6 (I don't know if it's new,
since it's the first time I tried it). It seems it occurs when IE wants to
repaint its window (but not always).

I'm using Wine from yesterday's CVS (20040401).

Output from winedbg :

Unhandled exception: page fault on read access to 0x00000008 in 32-bit code
(0x40ce7e70).
In 32-bit mode.
0x40ce7e70 (X11DRV_CLIPBOARD_LookupFormat+0x29 [clipboard.c:372] in X11DRV.DLL):
 cmpl   $0,0x8(%esi)
372         if (!lpFormat->drvData) intern_atoms();
Wine-dbg>bt
Backtrace:
=>0 0x40ce7e70 (X11DRV_CLIPBOARD_LookupFormat+0x29(wID=0x0) [clipboard.c:372] in
 X11DRV.DLL) (ebp=42d0fc18)
  1 0x40cea21c (X11DRV_GetClipboardFormatName+0x27(wFormat=0x0,
retStr=0x42d0fc78, maxlen=0x3f) [clipboard.c:2044] in X11DRV.DLL) (ebp=42d0fc38)
  2 0x4087b381 (GetClipboardFormatNameA+0x57(wFormat=0x0, retStr=0x42d0fc78,
maxlen=0x3f) [clipboard.c:295] in USER32.DLL) (ebp=42d0fc58)
  3 0x70513e38 (IMGUTIL.DLL.DecodeImage+0xc2 in IMGUTIL.DLL) (ebp=42d0fcd8)
  4 0x70e9137c (MSHTML.DLL.com_ms_osp_ospmrshl_releaseByValExternal+0x6443d in
MSHTML.DLL) (ebp=42d0fd04)
  5 0x70d7dbfd (MSHTML.DLL.DllGetClassObject+0x3e649 in MSHTML.DLL) (ebp=42d0ff1c)
  6 0x70cd7f2c (MSHTML.DLL..text+0x86f2c in MSHTML.DLL) (ebp=42d0fff4)
  7 0x40029f31 (wine_switch_to_stack+0x11 in libwine.so.1) (ebp=00000000)