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Why Debug Assertion Failed

Discussion in 'MFC' started by Hylius, Jun 23, 2010.

  1. Hylius

    Hylius New Member

    Jun 23, 2010
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    I'm new to Visual C++ and MFC, so I apologize if this is something simple.

    I'm trying to use the Windows Packet Filtering API (Windows XP SP3) using Visual Studio 2010. When I try to run the .exe I immediately get the following error:
    File: f:\dd\vctools\crt_bld\self_x86\crt\src\dbgheap.c
    Line: 1511
    Expression: _CrtIsValidHeapPointer(pUserData)
    So when I hit retry and go to the debugger, I look at the call stack and the last reference in my .exe is:
    retval = __dllonexit((_onexit_t)_encode_pointer(func), &onexitbegin, &onexitend);
    Afterwards it goes to the msvcr90d.dll and the last thing it tries to execute before the error is:
    I've honestly no clue what to do. I spent the past 2 hours on google and these forums and nothing I saw helped. I could understand if it was due to a function I wrote, but the call stack does not indicate anything that I wrote. Am I missing some key option? Thanks for your time, and if there is anything I need to upload, please tell me. I apologize for anything missing or incorrect formatting.

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