vc++8.0 bug: access violtation upon any call of any CImageList methods

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Robert Ludewig - 14 Dec 2005 17:42 GMT

I have sucessfully imported and compiled a complex MFC 6.0 project from
vc++6.0 (MFC6.0) into vc++ 8.0 (MFC 8.0). It contains several
subprojects (libs and dlls). In vc++ 6.0 those project linked MFC6.0
statically and after I imported it to vc++ 8.0 I set the linkage of
MFC8.0 to "shared" (I want to introduce some c++/CLI code later).
However when I try to compile and link the project in vc++ 8.0 in
release mode (debugmode works fine) I get an acess violation in
afxcomctl32.inl. This happnes whenever I call any of the CImageList
methods. When I comment out all lines that call mehtods of CImageList
everything work fine in release mode too.

When I look at the disassembly the crash pattern is always the same. The
access violation always happens after a call of AfxGetModuleState and
before a call to CComCtlWrapper::_ImageList_XXX

disassembly:

004DE7F5 call AfxGetModuleState (49CE2Ah)
004DE7FA mov eax,dword ptr [eax+90h] // it is always 90h added
004DE800 mov ecx,dword ptr [eax] <------------ access
violation !!!!
004DE802 call CComCtlWrapper::_ImageList_GetIcon (49E158h)
( the last line can be interchanged by
CComCtlWrapper::_ImageList_GetImageCount (49A805h) or any other call to
CImageList mehtods )

registers:

EAX = 00000004 EBX = 00180940 ECX = 781FF81B EDX = 782BA9DC
ESI = 7821A936 EDI = 00000000 EIP = 004DE800 ESP = 0012BB04
EBP = 0012BB5C EFL = 00000206

Can any explain what is going on here and give me hints how to solve
this problem? What does AfxGetModuleState do? What is afxcomctl32.inl ?
What could be obvious places to look for ? Is this a know bug in vc++ 8?
I have found a bug in vc++ 8.0 that is STILL UNRESOLVED that somehow
looks a little similar to mine:
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=132410&SiteID=1

Nevertheless the problem described there and the workaround suggested
does not fit here, since all of my projects have the allignment set to
default and nowhere in my project I see any #pragma pack directives.

Also I wonder what the purpose of the addition of 90h in this line is:
004DE7FA mov eax,dword ptr [eax+90h]

Reply to this Message

Nikola Dudar [MSFT] - 14 Dec 2005 23:16 GMT

Hi,

I do not recall any change in VC8 that may impact this scenario.
Unfortunately I cannot see topic on forums, looks like website is closed for
maintenance. I would recommend reducing your project to a small repro that
works in VC6 but AV on VC8. Then open a bug report to
http://lab.msdn.microsoft.com/productfeedback/. Our dev team will
investigate this and either fix the issue or recommend workaround.
Alternative way is contacting Developer Support team, they may help you with
that also.

Thanks,
Nikola

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Nikola Dudar
Visual C++ Team
This posting is provided "AS IS" with no warranties, and confers no rights.
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My Blog - http://blogs.msdn.com/nikolad/

>I have sucessfully imported and compiled a complex MFC 6.0 project from
>vc++6.0 (MFC6.0) into vc++ 8.0 (MFC 8.0). It contains several subprojects
[quoted text clipped - 40 lines]
> Also I wonder what the purpose of the addition of 90h in this line is:
> 004DE7FA mov eax,dword ptr [eax+90h]

Reply to this Message

bonk - 15 Dec 2005 16:10 GMT

Can you give me a hint how to contact the Developer Support team ? We
have msdn (operating system) subscriptions (if that matters ...)

Nikola Dudar [MSFT] schrieb:

> Hi,
>
[quoted text clipped - 9 lines]
> Thanks,
> Nikola

Reply to this Message

Ted - 02 Jan 2006 17:09 GMT

For others still looking for info on this problem, here is the ongoing
thread on Microsoft forums:

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=168836&SiteID=1

Ted.

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vc++8.0 bug: access violtation upon any call of any CImageList methods

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