Re: How to catch this error Access Violation

Besides other recomendations that Pavel gave, I'd like to point out a couple
of things:

-1-
This this crash

0:000> g
(1d0c.778): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=00000000 ebx=00000000 ecx=00000000 edx=000007f8 esi=101f2a70
edi=00000009
eip=771248d3 esp=0012ef64 ebp=0012ef6c iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00010246
OLEAUT32!VariantClear+0xbb:
771248d3 66832600 and word ptr [esi],0 ds:
0023:101f2a70=????

The question you have to answer is:
What happened to the memory backing the `101f2a70` address.
The method to answer that would be:
enable Full PageHeap on the applicaiton
c:\debuggers>gflags -p /enable <applicaiton_name.exe> /full
Upon error in the debugger
0:001> !address 101f2a70
0:001> !heap -p -a
0:001> !address 101f2a70

-2- for this early unload,
ask yourself:
Why would COM unload my module ?
This can only happen if DllGetClassObject() returned TRUE.
DllGetClassOject should return TRUE only if there are no more
outstanding instances of objects managed by the DLL.
For example, does the existance of AppContainer!Mycontainer
counts towards the module-count ?

There are subltle ways this can happen.

Let me make a simple example:

class MyConstainer {
private:
    ULONG m_cRef;
    std::map<_bstr_t,_variant_t> m_map;
public:
    // usual AddRef/Relaese?QI stuff

   ~MyContainer();
}

~MyContainer(){
    g_ModuleCount--; // too early
    for (iterator it = m_map.begin(); iterator != m_map.end; ++iterator) {
       m_map.erase(iterator);
   }
}

Now, by the time the last object is removed from the map,
the g_ModuleCount has dropped to zero, but, there is still code
in AppContainer to be executed, namingly, the code that encompasses
the destructor and the Release method.

0:000> g
Unload module c:\AppDir\AppContainer.dll at 12d70000
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
ChildEBP RetAddr Args to Child
0012eb34 7c90e96c 7c91e7d3 ffffffff 12d70000 ntdll!KiFastSystemCallRet
0012eb38 7c91e7d3 ffffffff 12d70000 0012ec7c ntdll!NtUnmapViewOfSection+0xc
0012ec28 7c80abf7 12d70000 0012ec94 0012ee74 ntdll!LdrUnloadDll+0x31a
0012ec3c 77513442 12d70000 0012ee94 77513456 kernel32!FreeLibrary+0x3f
0012ec48 77513456 0012eca0 776067e0 00000000
ole32!CClassCache::CDllPathEntry::CFinishObject::Finish+0x2f
0012ec5c 775135fe 774e1ab0 00000000 00000000
ole32!CClassCache::CFinishComposite::Finish+0x1d
0012ee94 77513578 ffffffff 001460b0 102e7700
ole32!CClassCache::FreeUnused+0x19d
0012eea4 775133a2 ffffffff 00000000 6605a01e
ole32!CoFreeUnusedLibrariesEx+0x36
0012eeb0 6605a01e 08000000 102e766c 0012eee8 ole32!CoFreeUnusedLibraries+0x9
0012eec4 6605b4d1 00ee5314 00000000 102cee44
MSVBVM60!CCreDestroyCtlStruct+0x387
0012eee8 6601c56a 102e73a0 00000000 00000000 MSVBVM60!CCreDestroyCtl+0x195
0012ef2c 6601bc56 015912ac 00000000 660c9ed5 MSVBVM60!CCreFUnloadForm+0x1c9
0012ef38 660c9ed5 102ce6ac 00000009 101f2a70 MSVBVM60!CUnkDesk::Release+0x23
0012ef50 6600e720 0ee94204 77124918 0ee941e8
MSVBVM60!BASIC_CLASS::PRIVATE_UNKNOWN::Release+0x11c
0012ef58 77124918 0ee941e8 0012efc8 0012ef78
MSVBVM60!SCM_MsoStdCompMgr::Release+0xd
0012ef6c 12d75f49 101f2a70 0012f020 101f2a5c OLEAUT32!VariantClear+0xb1
0012efc8 12d715d4 0012f084 101f2a5c 00000000
AppContainer!_variant_t::~_variant_t+0x29 [c:\program files\microsoft visual
studio\vc98\include\comutil.h @ 1736]
0012f02c 12d74b25 0012f0dc 101f2a5c 00000000 AppContainer!std::pair<_bstr_t
const ,_variant_t>::~pair<_bstr_t const ,_variant_t>+0x44
0012f084 12d749b2 00000000 0012f138 101f2a5c AppContainer!std::pair<_bstr_t
const ,_variant_t>::`scalar deletingdestructor'+0x25
0012f0dc 12d73d46 101f2a68 0012f1b0 101f2a5c AppContainer!std::_Destroy+0x22
[c:\program files\microsoft visual studio\vc98\include\xmemory @38]

--
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<johnxhc@gmail.com> wrote in message
news:1172391718.217617.280420@q2g2000cwa.googlegroups.com...
Sorry I send the wrong stack trace, here is the AV Stack Trace and
also the Code causing the AV

I agrees that the reference count is the problem, but my point is that
there is not much I could do, because the COM component is created
in .NET 2.0, passed to another COM Component (Also created in .NET
2.0), SO the .NET is suppose to manage the reference count.

Here is the second COM Component which take the first COM Component
and stored it in a variant_t (later stored in a STL Map)
b
The error happend when in the destructor of the second Component, when
I tries to erase the entries in the stl map, that eventualy casuing
the VariantClear to be called, it them tries to free a COM Component
which is not long valid, causing AV

Here is my Code , here the map stored the COM Object Name and the COM
Object Instance.
  typedef map<_bstr_t,_variant_t> PropertyMap;
  typedef pair<_bstr_t,_variant_t> Pair;

  //the map of names to properties
  PropertyMap m_Props;
private:
_variant_t tmp;

vector<_bstr_t> vecNames;
void RemoveMapObject()
{
int currentCount=0;
int lsize=m_Props.size();

vector<_bstr_t>::iterator vecit;
PropertyMap::iterator mapit;
for (mapit = m_Props.begin();mapit!=m_Props.end();mapit++)
{
OutputDebugString(mapit->first);
vecNames.push_back(mapit->first);
}
__try
{

int j=0;

for ( vecit=vecNames.begin();vecit!=vecNames.end();vecit++)
{
mapit=m_Props.find(*vecit);
if (mapit!=m_Props.end())
{
m_Props.erase(mapit);
}
}
}
__except (EXCEPTION_EXECUTE_HANDLER)
{
}

}

0:028> bl
 0 e 79f0c367 0001 (0001) 0:**** mscorwks!CorExitProcess
 1 e 7c90e88e 0001 (0001) 0:**** ntdll!NtTerminateProcess
0:028> g
(1d0c.778): Unknown exception - code c000008f (first chance)
Message 0x101 queued at 483297875. Character ID found = 0xD/13.
(1d0c.778): Unknown exception - code c000008f (first chance)
Unload module c:\AppDir\SDExtender.dll at 18730000
eax=0012b0cc ebx=18733441 ecx=00000000 edx=0012c300 esi=151020b0
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> g
Unload module c:\AppDir\SDLgCmd.dll at 33700000
eax=0012b0cc ebx=3370ac41 ecx=00000000 edx=0012c300 esi=15101ba8
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> g
Unload module c:\AppDir\STCD.dll at 33a80000
eax=0012b0cc ebx=33a8cb85 ecx=00000000 edx=0012c300 esi=0024e400
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> g
Unload module c:\AppDir\SDPCmd.dll at 338e0000
eax=0012b0cc ebx=338e93e3 ecx=00000000 edx=0012c300 esi=0024e300
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> g
Unload module c:\AppDir\JNBS.dll at 1d620000
eax=01050000 ebx=1d762340 ecx=0012e758 edx=7c90eb94 esi=0024e238
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> g
Unload module c:\AppDir\FIO.dll at 3e710000
eax=01050000 ebx=3e750b60 ecx=0012e758 edx=7c90eb94 esi=0024e188
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> g
Unload module c:\AppDir\JData.dll at 28dc0000
eax=01050000 ebx=28dc9bf0 ecx=0012e758 edx=7c90eb94 esi=0024dfa8
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> kb
ChildEBP RetAddr Args to Child
0012eb34 7c90e96c 7c91e7d3 ffffffff 28dc0000 ntdll!KiFastSystemCallRet
0012eb38 7c91e7d3 ffffffff 28dc0000 0012ecac ntdll!NtUnmapViewOfSection
+0xc
0012ec28 7c80abf7 28dc0000 0012ecc4 0012ee74 ntdll!LdrUnloadDll+0x31a
0012ec3c 77513442 28dc0000 0012ee94 77513456 kernel32!FreeLibrary+0x3f
0012ec48 77513456 0012ecd0 776067e0 00000000 ole32!
CClassCache::CDllPathEntry::CFinishObject::Finish+0x2f
0012ec5c 775135fe 774e1ab0 00000000 00000000 ole32!
CClassCache::CFinishComposite::Finish+0x1d
0012ee94 77513578 ffffffff 001460b0 102e7700 ole32!
CClassCache::FreeUnused+0x19d
0012eea4 775133a2 ffffffff 00000000 6605a01e ole32!
CoFreeUnusedLibrariesEx+0x36
0012eeb0 6605a01e 08000000 102e766c 0012eee8 ole32!
CoFreeUnusedLibraries+0x9
0012eec4 6605b4d1 00ee5314 00000000 102cee44 MSVBVM60!
CCreDestroyCtlStruct+0x387
0012eee8 6601c56a 102e73a0 00000000 00000000 MSVBVM60!CCreDestroyCtl
+0x195
0012ef2c 6601bc56 015912ac 00000000 660c9ed5 MSVBVM60!CCreFUnloadForm
+0x1c9
0012ef38 660c9ed5 102ce6ac 00000009 101f2a70 MSVBVM60!CUnkDesk::Release
+0x23
0012ef50 6600e720 0ee94204 77124918 0ee941e8 MSVBVM60!
BASIC_CLASS::PRIVATE_UNKNOWN::Release+0x11c
0012ef58 77124918 0ee941e8 0012efc8 0012ef78 MSVBVM60!
SCM_MsoStdCompMgr::Release+0xd
*** WARNING: Unable to verify checksum for c:\AppDir\AppContainer.dll
0012ef6c 12d75f49 101f2a70 0012f020 101f2a5c OLEAUT32!VariantClear
+0xb1
0012efc8 12d715d4 0012f084 101f2a5c 00000000 AppContainer!
_variant_t::~_variant_t+0x29 [c:\program files\microsoft visual studio
\vc98\include\comutil.h @ 1736]
0012f02c 12d74b25 0012f0dc 101f2a5c 00000000 AppContainer!
std::pair<_bstr_t const ,_variant_t>::~pair<_bstr_t const ,_variant_t>
+0x44
0012f084 12d749b2 00000000 0012f138 101f2a5c AppContainer!
std::pair<_bstr_t const ,_variant_t>::`scalar deleting
destructor'+0x25
0012f0dc 12d73d46 101f2a68 0012f1b0 101f2a5c AppContainer!std::_Destroy
+0x22 [c:\program files\microsoft visual studio\vc98\include\xmemory @
38]
0:000> g
Unload module c:\AppDir\Calc.dll at 153d0000
eax=01050000 ebx=1574aa80 ecx=0012e758 edx=7c90eb94 esi=0024de28
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> kb
ChildEBP RetAddr Args to Child
0012eb34 7c90e96c 7c91e7d3 ffffffff 153d0000 ntdll!KiFastSystemCallRet
0012eb38 7c91e7d3 ffffffff 153d0000 0012ec94 ntdll!NtUnmapViewOfSection
+0xc
0012ec28 7c80abf7 153d0000 0012ecac 0012ee74 ntdll!LdrUnloadDll+0x31a
0012ec3c 77513442 153d0000 0012ee94 77513456 kernel32!FreeLibrary+0x3f
0012ec48 77513456 0012ecb8 776067e0 00000000 ole32!
CClassCache::CDllPathEntry::CFinishObject::Finish+0x2f
0012ec5c 775135fe 774e1ab0 00000000 00000000 ole32!
CClassCache::CFinishComposite::Finish+0x1d
0012ee94 77513578 ffffffff 001460b0 102e7700 ole32!
CClassCache::FreeUnused+0x19d
0012eea4 775133a2 ffffffff 00000000 6605a01e ole32!
CoFreeUnusedLibrariesEx+0x36
0012eeb0 6605a01e 08000000 102e766c 0012eee8 ole32!
CoFreeUnusedLibraries+0x9
0012eec4 6605b4d1 00ee5314 00000000 102cee44 MSVBVM60!
CCreDestroyCtlStruct+0x387
0012eee8 6601c56a 102e73a0 00000000 00000000 MSVBVM60!CCreDestroyCtl
+0x195
0012ef2c 6601bc56 015912ac 00000000 660c9ed5 MSVBVM60!CCreFUnloadForm
+0x1c9
0012ef38 660c9ed5 102ce6ac 00000009 101f2a70 MSVBVM60!CUnkDesk::Release
+0x23
0012ef50 6600e720 0ee94204 77124918 0ee941e8 MSVBVM60!
BASIC_CLASS::PRIVATE_UNKNOWN::Release+0x11c
0012ef58 77124918 0ee941e8 0012efc8 0012ef78 MSVBVM60!
SCM_MsoStdCompMgr::Release+0xd
0012ef6c 12d75f49 101f2a70 0012f020 101f2a5c OLEAUT32!VariantClear
+0xb1
0012efc8 12d715d4 0012f084 101f2a5c 00000000 AppContainer!
_variant_t::~_variant_t+0x29 [c:\program files\microsoft visual studio
\vc98\include\comutil.h @ 1736]
0012f02c 12d74b25 0012f0dc 101f2a5c 00000000 AppContainer!
std::pair<_bstr_t const ,_variant_t>::~pair<_bstr_t const ,_variant_t>
+0x44
0012f084 12d749b2 00000000 0012f138 101f2a5c AppContainer!
std::pair<_bstr_t const ,_variant_t>::`scalar deleting
destructor'+0x25
0012f0dc 12d73d46 101f2a68 0012f1b0 101f2a5c AppContainer!std::_Destroy
+0x22 [c:\program files\microsoft visual studio\vc98\include\xmemory @
38]
0:000> r
eax=01050000 ebx=1574aa80 ecx=0012e758 edx=7c90eb94 esi=0024de28
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> g
Unload module c:\AppDir\AppContainer.dll at 12d70000
eax=12d99024 ebx=12d7df70 ecx=12d99024 edx=12d99024 esi=0024a8b0
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> r;kb
eax=12d99024 ebx=12d7df70 ecx=12d99024 edx=12d99024 esi=0024a8b0
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
ChildEBP RetAddr Args to Child
0012eb34 7c90e96c 7c91e7d3 ffffffff 12d70000 ntdll!KiFastSystemCallRet
0012eb38 7c91e7d3 ffffffff 12d70000 0012ec7c ntdll!NtUnmapViewOfSection
+0xc
0012ec28 7c80abf7 12d70000 0012ec94 0012ee74 ntdll!LdrUnloadDll+0x31a
0012ec3c 77513442 12d70000 0012ee94 77513456 kernel32!FreeLibrary+0x3f
0012ec48 77513456 0012eca0 776067e0 00000000 ole32!
CClassCache::CDllPathEntry::CFinishObject::Finish+0x2f
0012ec5c 775135fe 774e1ab0 00000000 00000000 ole32!
CClassCache::CFinishComposite::Finish+0x1d
0012ee94 77513578 ffffffff 001460b0 102e7700 ole32!
CClassCache::FreeUnused+0x19d
0012eea4 775133a2 ffffffff 00000000 6605a01e ole32!
CoFreeUnusedLibrariesEx+0x36
0012eeb0 6605a01e 08000000 102e766c 0012eee8 ole32!
CoFreeUnusedLibraries+0x9
0012eec4 6605b4d1 00ee5314 00000000 102cee44 MSVBVM60!
CCreDestroyCtlStruct+0x387
0012eee8 6601c56a 102e73a0 00000000 00000000 MSVBVM60!CCreDestroyCtl
+0x195
0012ef2c 6601bc56 015912ac 00000000 660c9ed5 MSVBVM60!CCreFUnloadForm
+0x1c9
0012ef38 660c9ed5 102ce6ac 00000009 101f2a70 MSVBVM60!CUnkDesk::Release
+0x23
0012ef50 6600e720 0ee94204 77124918 0ee941e8 MSVBVM60!
BASIC_CLASS::PRIVATE_UNKNOWN::Release+0x11c
0012ef58 77124918 0ee941e8 0012efc8 0012ef78 MSVBVM60!
SCM_MsoStdCompMgr::Release+0xd
0012ef6c 12d75f49 101f2a70 0012f020 101f2a5c OLEAUT32!VariantClear
+0xb1
0012efc8 12d715d4 0012f084 101f2a5c 00000000 AppContainer!
_variant_t::~_variant_t+0x29 [c:\program files\microsoft visual studio
\vc98\include\comutil.h @ 1736]
0012f02c 12d74b25 0012f0dc 101f2a5c 00000000 AppContainer!
std::pair<_bstr_t const ,_variant_t>::~pair<_bstr_t const ,_variant_t>
+0x44
0012f084 12d749b2 00000000 0012f138 101f2a5c AppContainer!
std::pair<_bstr_t const ,_variant_t>::`scalar deleting
destructor'+0x25
0012f0dc 12d73d46 101f2a68 0012f1b0 101f2a5c AppContainer!std::_Destroy
+0x22 [c:\program files\microsoft visual studio\vc98\include\xmemory @
38]
0:000> g
Unload module c:\AppDir\RDB.dll at 23870000
eax=00000000 ebx=23877179 ecx=0012eb38 edx=7c90eb94 esi=00249b70
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
0:000> r;kb
eax=00000000 ebx=23877179 ecx=0012eb38 edx=7c90eb94 esi=00249b70
edi=0012ebfc
eip=7c90eb94 esp=0012eb38 ebp=0012ec28 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00000246
ntdll!KiFastSystemCallRet:
7c90eb94 c3 ret
ChildEBP RetAddr Args to Child
0012eb34 7c90e96c 7c91e7d3 ffffffff 23870000 ntdll!KiFastSystemCallRet
0012eb38 7c91e7d3 ffffffff 23870000 0012ee74 ntdll!NtUnmapViewOfSection
+0xc
0012ec28 7c80abf7 23870000 0012ec7c 0012ee74 ntdll!LdrUnloadDll+0x31a
0012ec3c 77513442 23870000 0012ee94 77513456 kernel32!FreeLibrary+0x3f
0012ec48 77513456 0012ec88 776067e0 00000000 ole32!
CClassCache::CDllPathEntry::CFinishObject::Finish+0x2f
0012ec5c 775135fe 774e1ab0 00000000 00000000 ole32!
CClassCache::CFinishComposite::Finish+0x1d
0012ee94 77513578 ffffffff 001460b0 102e7700 ole32!
CClassCache::FreeUnused+0x19d
0012eea4 775133a2 ffffffff 00000000 6605a01e ole32!
CoFreeUnusedLibrariesEx+0x36
0012eeb0 6605a01e 08000000 102e766c 0012eee8 ole32!
CoFreeUnusedLibraries+0x9
0012eec4 6605b4d1 00ee5314 00000000 102cee44 MSVBVM60!
CCreDestroyCtlStruct+0x387
0012eee8 6601c56a 102e73a0 00000000 00000000 MSVBVM60!CCreDestroyCtl
+0x195
0012ef2c 6601bc56 015912ac 00000000 660c9ed5 MSVBVM60!CCreFUnloadForm
+0x1c9
0012ef38 660c9ed5 102ce6ac 00000009 101f2a70 MSVBVM60!CUnkDesk::Release
+0x23
0012ef50 6600e720 0ee94204 77124918 0ee941e8 MSVBVM60!
BASIC_CLASS::PRIVATE_UNKNOWN::Release+0x11c
0012ef58 77124918 0ee941e8 0012efc8 0012ef78 MSVBVM60!
SCM_MsoStdCompMgr::Release+0xd
0012ef6c 12d75f49 101f2a70 0012f020 101f2a5c OLEAUT32!VariantClear
+0xb1
WARNING: Frame IP not in any known module. Following frames may be
wrong.
0012efc8 12d715d4 0012f084 101f2a5c 00000000
<Unloaded_AppContainer.dll>+0x5f49
0012f02c 12d74b25 0012f0dc 101f2a5c 00000000
<Unloaded_AppContainer.dll>+0x15d4
0012f084 12d749b2 00000000 0012f138 101f2a5c
<Unloaded_AppContainer.dll>+0x4b25
0012f0dc 12d73d46 101f2a68 0012f1b0 101f2a5c
<Unloaded_AppContainer.dll>+0x49b2
0:000> g
(1d0c.778): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=00000000 ebx=00000000 ecx=00000000 edx=000007f8 esi=101f2a70
edi=00000009
eip=771248d3 esp=0012ef64 ebp=0012ef6c iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00010246
OLEAUT32!VariantClear+0xbb:
771248d3 66832600 and word ptr [esi],0 ds:
0023:101f2a70=????
0:000> r;kb
eax=00000000 ebx=00000000 ecx=00000000 edx=000007f8 esi=101f2a70
edi=00000009
eip=771248d3 esp=0012ef64 ebp=0012ef6c iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00010246
OLEAUT32!VariantClear+0xbb:
771248d3 66832600 and word ptr [esi],0 ds:
0023:101f2a70=????
ChildEBP RetAddr Args to Child
0012ef6c 12d75f49 101f2a70 0012f020 101f2a5c OLEAUT32!VariantClear
+0xbb
WARNING: Frame IP not in any known module. Following frames may be
wrong.
0012efc8 12d715d4 0012f084 101f2a5c 00000000
<Unloaded_AppContainer.dll>+0x5f49
0012f02c 12d74b25 0012f0dc 101f2a5c 00000000
<Unloaded_AppContainer.dll>+0x15d4
0012f084 12d749b2 00000000 0012f138 101f2a5c
<Unloaded_AppContainer.dll>+0x4b25
0012f0dc 12d73d46 101f2a68 0012f1b0 101f2a5c
<Unloaded_AppContainer.dll>+0x49b2
0012f138 12d72cb5 101f2a68 0012f21c 0012f22c
<Unloaded_AppContainer.dll>+0x3d46
0012f1bc 12d78ebd 0012f278 101f2558 0012f2a8
<Unloaded_AppContainer.dll>+0x2cb5
0012f21c 12d78b88 0012f278 101f2a58 0012f318
<Unloaded_AppContainer.dll>+0x8ebd
0012f2c0 12d78901 0012f37c 0017a9f0 00000000
<Unloaded_AppContainer.dll>+0x8b88
0012f324 12d79740 0012f3e0 0017a9f0 00000000
<Unloaded_AppContainer.dll>+0x8901
0012f448 79e8dbde 101f24f0 920e3123 00000008
<Unloaded_AppContainer.dll>+0x9740
0012f3e0 12d79dd8 00000001 00000000 0017a9f0 mscorwks!
ReleaseTransitionHelper+0x5f
0012f448 79e8dbde 101f24f0 920e3123 00000008
<Unloaded_AppContainer.dll>+0x9dd8
0012f49c 79e8db4a 101f24f0 920e315b 00000008 mscorwks!
ReleaseTransitionHelper+0x5f
0012f4e4 79e8dac5 101f24f0 1438bc60 920e30a7 mscorwks!SafeReleaseHelper
+0x89
0012f518 79f27983 101f24f0 1438bc60 00000001 mscorwks!SafeRelease+0x2f
0012f530 79f2792e 920e30df 00000001 1438bc60 mscorwks!
RCW::ReleaseAllInterfaces+0x49
0012f560 79f279dc 1438bc60 920e302f 00000001 mscorwks!
RCW::ReleaseAllInterfacesCallBack+0xbd
0012f590 79f279b0 01a1fb7c 79f27997 1438c418 mscorwks!RCW::Cleanup
+0x22
0012f598 79f27997 1438c418 920e3077 0012f5e4 mscorwks!
RCWCleanupList::ReleaseRCWListRaw+0x14
0:000> g
(1d0c.778): Access violation - code c0000005 (first chance)
First chance exceptions are reported before any exception handling.
This exception may be expected and handled.
eax=00000000 ebx=00000000 ecx=12d93939 edx=7c9037d8 esi=00000000
edi=00000000
eip=12d93939 esp=0012eb94 ebp=0012ebb4 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00010246
<Unloaded_AppContainer.dll>+0x23939:
12d93939 ?? ???
0:000> r;kb
eax=00000000 ebx=00000000 ecx=12d93939 edx=7c9037d8 esi=00000000
edi=00000000
eip=12d93939 esp=0012eb94 ebp=0012ebb4 iopl=0 nv up ei pl zr
na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
efl=00010246
<Unloaded_AppContainer.dll>+0x23939:
12d93939 ?? ???
ChildEBP RetAddr Args to Child
WARNING: Frame IP not in any known module. Following frames may be
wrong.
0012eb90 7c9037bf 0012ec7c 0012f020 0012ec98
<Unloaded_AppContainer.dll>+0x23939
0012ebb4 7c90378b 0012ec7c 0012f020 0012ec98 ntdll!
ExecuteHandler2+0x26
0012ec64 7c90eafa 00000000 0012ec98 0012ec7c ntdll!ExecuteHandler+0x24
0012ec64 771248d3 00000000 0012ec98 0012ec7c ntdll!
KiUserExceptionDispatcher+0xe
0012ef6c 12d75f49 101f2a70 0012f020 101f2a5c OLEAUT32!VariantClear
+0xbb
0012efc8 12d715d4 0012f084 101f2a5c 00000000
<Unloaded_AppContainer.dll>+0x5f49
0012f02c 12d74b25 0012f0dc 101f2a5c 00000000
<Unloaded_AppContainer.dll>+0x15d4
0012f084 12d749b2 00000000 0012f138 101f2a5c
<Unloaded_AppContainer.dll>+0x4b25
0012f0dc 12d73d46 101f2a68 0012f1b0 101f2a5c
<Unloaded_AppContainer.dll>+0x49b2
0012f138 12d72cb5 101f2a68 0012f21c 0012f22c
<Unloaded_AppContainer.dll>+0x3d46
0012f1bc 12d78ebd 0012f278 101f2558 0012f2a8
<Unloaded_AppContainer.dll>+0x2cb5
0012f21c 12d78b88 0012f278 101f2a58 0012f318
<Unloaded_AppContainer.dll>+0x8ebd
0012f2c0 12d78901 0012f37c 0017a9f0 00000000
<Unloaded_AppContainer.dll>+0x8b88
0012f324 12d79740 0012f3e0 0017a9f0 00000000
<Unloaded_AppContainer.dll>+0x8901
0012f448 79e8dbde 101f24f0 920e3123 00000008
<Unloaded_AppContainer.dll>+0x9740
0012f3e0 12d79dd8 00000001 00000000 0017a9f0 mscorwks!
ReleaseTransitionHelper+0x5f
0012f448 79e8dbde 101f24f0 920e3123 00000008
<Unloaded_AppContainer.dll>+0x9dd8
0012f49c 79e8db4a 101f24f0 920e315b 00000008 mscorwks!
ReleaseTransitionHelper+0x5f
0012f4e4 79e8dac5 101f24f0 1438bc60 920e30a7 mscorwks!SafeReleaseHelper
+0x89
0012f518 79f27983 101f24f0 1438bc60 00000001 mscorwks!SafeRelease+0x2f
0:000> .reload/unl AppContainer.dll
*** WARNING: Unable to verify checksum for AppContainer.dll
0:000> kb
ChildEBP RetAddr Args to Child
0012eb90 7c9037bf 0012ec7c 0012f020 0012ec98 AppContainer!
CreateErrorInfo+0xbb
0012ebb4 7c90378b 0012ec7c 0012f020 0012ec98 ntdll!
ExecuteHandler2+0x26
0012ec64 7c90eafa 00000000 0012ec98 0012ec7c ntdll!ExecuteHandler+0x24
0012ec64 771248d3 00000000 0012ec98 0012ec7c ntdll!
KiUserExceptionDispatcher+0xe
0012ef6c 12d75f49 101f2a70 0012f020 101f2a5c OLEAUT32!VariantClear
+0xbb
0012efc8 12d715d4 0012f084 101f2a5c 00000000 AppContainer!
_variant_t::~_variant_t+0x29 [c:\program files\microsoft visual studio
\vc98\include\comutil.h @ 1736]
0012f02c 12d74b25 0012f0dc 101f2a5c 00000000 AppContainer!
std::pair<_bstr_t const ,_variant_t>::~pair<_bstr_t const ,_variant_t>
+0x44
0012f084 12d749b2 00000000 0012f138 101f2a5c AppContainer!
std::pair<_bstr_t const ,_variant_t>::`scalar deleting
destructor'+0x25
0012f0dc 12d73d46 101f2a68 0012f1b0 101f2a5c AppContainer!std::_Destroy
+0x22 [c:\program files\microsoft visual studio\vc98\include\xmemory @
38]
0012f138 12d72cb5 101f2a68 0012f21c 0012f22c AppContainer!
std::_Tree<_bstr_t,std::pair<_bstr_t
const
,_variant_t>,std::map<_bstr_t,_variant_t,std::less<_bstr_t>,std::allocator<_variant_t>


[c:\program files\microsoft visual studio\vc98\include\xtree @ 585]
0012f1bc 12d78ebd 0012f278 101f2558 0012f2a8 AppContainer!
std::_Tree<_bstr_t,std::pair<_bstr_t
const
,_variant_t>,std::map<_bstr_t,_variant_t,std::less<_bstr_t>,std::allocator<_variant_t>


[c:\program files\microsoft visual studio\vc98\include\xtree @ 359]
0012f21c 12d78b88 0012f278 101f2a58 0012f318 AppContainer!
std::map<_bstr_t,_variant_t,std::less<_bstr_t>,std::allocator<_variant_t>


\map @ 104]
0012f2c0 12d78901 0012f37c 0017a9f0 00000000 AppContainer!
CPropertyContainer::RemoveMapObject+0x238 [c:\source\AppContainer
\cpropertycontainer.h @ 120]
0012f324 12d79740 0012f3e0 0017a9f0 00000000 AppContainer!
CPropertyContainer::~CPropertyContainer+0x41 [c:\source\AppContainer
\cpropertycontainer.h @ 137]
0012f388 12d774f5 0012f448 0017a9f0 00000000 AppContainer!
ATL::CComObject<CPropertyContainer>::~CComObject<CPropertyContainer>
+0x70 [c:\program files\microsoft visual studio\vc98\atl\include
\atlcom.h @ 2411]
0012f3e0 12d79dd8 00000001 00000000 0017a9f0 AppContainer!
ATL::CComObject<CPropertyContainer>::`scalar deleting destructor'+0x25
0012f448 79e8dbde 101f24f0 920e3123 00000008 AppContainer!
ATL::CComObject<CPropertyContainer>::Release+0x48 [c:\program files
\microsoft visual studio\vc98\atl\include\atlcom.h @ 2419]
0012f49c 79e8db4a 101f24f0 920e315b 00000008 mscorwks!
ReleaseTransitionHelper+0x5f
0012f4e4 79e8dac5 101f24f0 1438bc60 920e30a7 mscorwks!SafeReleaseHelper
+0x89
0012f518 79f27983 101f24f0 1438bc60 00000001 mscorwks!SafeRelease+0x2f
0:000> .lastevent
Last event: 1d0c.778: Access violation - code c0000005 (first chance)
  debugger time: Sat Feb 24 23:45:17.390 2007 (GMT-8)

On Feb 24, 8:29 pm, "Ivan Brugiolo [MSFT]"
<ivanb...@online.microsoft.com> wrote: