Runtime crash in a destructor

[nscbabu]

Hi,
We are migrating a product from vc6 to vs.net 2003, when we run the app
it crashes pointing to a c++ class destructor, we didnot make any code
changes during the migration. Can anybody help me giving some pointers
on what could be the possible reason?

Thanks in advance,
--sarath.

[Bruno van Dooren]

> We are migrating a product from vc6 to vs.net 2003, when we run the app

it crashes pointing to a c++ class destructor, we didnot make any code
changes during the migration. Can anybody help me giving some pointers
on what could be the possible reason?

Hi Sarah,
Could you perhaps post the code inside the destructor,
with an indication of which line triggers the crash?

--

Kind regards,
Bruno van Dooren
br************* *********@hotma il.com
Remove only "_nos_pam"

[Andreas Masur]

On Mon, 29 May 2006 03:12:37 -0700, ns*****@gmail.c om wrote:

Hi,
We are migrating a product from vc6 to vs.net 2003, when we run the app
it crashes pointing to a c++ class destructor, we didnot make any code
changes during the migration. Can anybody help me giving some pointers
on what could be the possible reason?

Thanks in advance,
--sarath.

Well...what about the debugger?

Ciao, Andreas

[nscbabu]

Hi guys,
Thanks for showing intrest in my question.

regards,
--sarath.

Pls find the debugging comments inline with the code:

dlsDownloadXref File::dlsDownlo adXrefFile(CMai nFrame* p) : dlsmState(p)
{
init = false;
pSearchFirmware Dlg = NULL;
m_user = "";
m_password = "";
pAbortRequested = new bool(false); //crashes here and goes

//to the ~dlsmState
}

dlsDownloadXref File::~dlsDownl oadXrefFile()
{
stopSearchDlg() ; //safety code - kill any existing
if ( pAbortRequested )
delete pAbortRequested ;
}

where,
dlsmState::dlsm State(CMainFram e* p) : pMainFrame(p)
{
bInit = false;
}

dlsmState::~dls mState()
{//After the "break, continue" exception
//dialog box the debbugger jumps to this destructor
//the stack trace shows all msvcr71d.dll:fu nction_names
// before this ~dlsmState
}

[Oleg Starodumov]

dlsDownloadXref File::dlsDownlo adXrefFile(CMai nFrame* p) : dlsmState(p)
{
init = false;
pSearchFirmware Dlg = NULL;
m_user = "";
m_password = "";
pAbortRequested = new bool(false); //crashes here

What kind of exception is raised?
What is on the call stack at this moment?

Regards,
Oleg
[VC++ MVP http://www.debuginfo.com/]

[nscbabu]

Hi,
Here I am pasting the stack trace.
--sarath.
ntdll.dll!_DbgB reakPoint@0()
ntdll.dll!_Rtlp BreakPointHeap@ 4() + 0x28
ntdll.dll!_Rtlp CheckBusyBlockT ail@4() + 0x76
ntdll.dll!_Rtlp ValidateHeapEnt ry@12() + 0xa4
ntdll.dll!_RtlV alidateHeap@12( ) + 0xe0
kernel32.dll!_H eapValidate@12( ) + 0x14

msvcr71d.dll!_C rtIsValidHeapPo inter(const void * pUserData=0x00e bda88) Line 1807 C

msvcr71d.dll!_f ree_dbg_lk(void * pUserData=0x00e bda88, int
nBlockUse=1) Line 1132 + 0x9 C
msvcr71d.dll!_f ree_dbg(void * pUserData=0x00e bda88, int nBlockUse=1)
Line 1070 + 0xd C
mfc71d.dll!oper ator delete(void * p=0x00ebda88) Line 369 + 0xc C++
mfc71d.dll!oper ator delete(void * pData=0x00ebda8 8, const char *
__formal=0x004d 3688, const char * __formal=0x004d 3688) Line 78 +
0x9 C++
dwnld.exe!AfxGe tModuleState() + 0x2038 C++

[Oleg Starodumov]

ntdll.dll!_DbgB reakPoint@0()
ntdll.dll!_Rtlp BreakPointHeap@ 4() + 0x28
ntdll.dll!_Rtlp CheckBusyBlockT ail@4() + 0x76
ntdll.dll!_Rtlp ValidateHeapEnt ry@12() + 0xa4
ntdll.dll!_RtlV alidateHeap@12( ) + 0xe0
kernel32.dll!_H eapValidate@12( ) + 0x14

msvcr71d.dll!_C rtIsValidHeapPo inter(const void * pUserData=0x00e bda88) Line 1807 C

msvcr71d.dll!_f ree_dbg_lk(void * pUserData=0x00e bda88, int
nBlockUse=1) Line 1132 + 0x9 C
msvcr71d.dll!_f ree_dbg(void * pUserData=0x00e bda88, int nBlockUse=1)
Line 1070 + 0xd C
mfc71d.dll!oper ator delete(void * p=0x00ebda88) Line 369 + 0xc C++
mfc71d.dll!oper ator delete(void * pData=0x00ebda8 8, const char *
__formal=0x004d 3688, const char * __formal=0x004d 3688) Line 78 +
0x9 C++
dwnld.exe!AfxGe tModuleState() + 0x2038 C++

The heap is corrupted, and heap manager notifies you about it.
Here is how you can find the reason of the problem:
http://www.debuginfo.com/tips/userbpntdll.html

Oleg