access violation (c system exception code : c0000005 ) while accessing ccomptr pointer and application got crash

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Win2003

Hello,
While accessing a computer I get an access violation error.
The error is not consistent and only reproducible while trying to access a huge data.
I have 2900 components and for each component I am calling a function. In this function I am accessing a ccompter, while doing this application gets crashed at random position like on 200, 210, 2500 etc. The position in not fixed when it crashes.

This issue is specific to the system with following configuration:
Window Server 2003 R2
Xeon CPU , 2.66 ghz
2 GB of RAM

here is my code

XGGraphicAttribute* pAttr = pExtraGraphicInfo->GetAttribute();

if(pAttr)
{
DBAttributes* db_attributes = NULL;

db_attributes = static_cast<DBAttributes*> (pAttr->GetDBAttributes());

CComPtr<IEPGraphicData> pIEPGraphicData;

if(db_attributes)

pIEPGraphicData = db_attributes->GetGraphicData(); // here my app got crashed 

}


IEPGraphicData* DBAttributes::GetGraphicData () const
{
    return m_pIEPGraphicData;
}

Please help me !!!

Regards
BitsMax

Posted 15-Sep-11 3:35am

bitsmax

Updated 15-Sep-11 18:48pm

v5

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Comments

Richard MacCutchan 15-Sep-11 10:35am

Without seeing some code and specifically the line(s) that causes the error it is impossible to make any suggestions.

Stefan_Lang 15-Sep-11 12:16pm

Sorry, this is not the Mentalist Forum here. We're programmers, and as such require some data to work on. And no, your system configuration doesn't help - that would be like reading your bank account data from your palm.

The source code of the function that you mentioned would be a great help though.

CPallini 16-Sep-11 3:25am

Is your application multithreaded?

bitsmax 16-Sep-11 8:27am

NO, its not multithreded.

Ali Fakoor 18-Sep-11 5:41am

What about threading/parallelism offered by the hardware:

Does the crash occur when setting the processor affinity to run the program only on one core of the CPU? Could you give it a try.

Ali Fakoor 18-Sep-11 5:37am

Could you please split this line:

pIEPGraphicData = db_attributes->GetGraphicData(); // here my app got crashed

into:

IEPGraphicData* pTemp = db_attributes->GetGraphicData(); //Craches here?
pIEPGraphicData = pTemp; //Or here?

to see whether the crash occur in the method call or in the assignment (copy).

2 solutions

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Richard MacCutchan · Answer 1 · 2011-09-18T05:07:00

Solution 2

What happens in the function called by

C++

db_attributes->GetGraphicData();

You should use your debugger or add some debug code of your own to see what is going on. There is no way anyone can guess why this causes an access violation without a lot more information.

Posted 18-Sep-11 5:07am

Richard MacCutchan

Arun Parthasarathy · Answer 2 · 2011-09-19T00:49:00

Solution 3

Pls trace the GetGraphicData(), and check wats making it to crash!

Posted 19-Sep-11 0:49am

Arun Parthasarathy