Re: Debug Assertion Failure

From:

katz911@gmail.com

Newsgroups:

microsoft.public.vc.mfc

Date:

Sat, 16 Jun 2007 00:15:50 -0700

Message-ID:

<1181978150.642571.282920@c77g2000hse.googlegroups.com>

On Jun 15, 6:00 pm, MrAsm <m...@usa.com> wrote:

On Fri, 15 Jun 2007 12:50:45 -0000, katz...@gmail.com wrote:

Perhaps it would be best if I just showed you the function, so you can
see for yourself

bool CMrStorage::LoadMe(CUserList& List)
{
   CFileHandler m_UserFile("Testing.txt",sizeof(CUser_IO));
   CUser_IO temp_user;
   CUser user;
   long iter;

The bug may be in some other portion of the code, e.g. in CUser class
or in CFileHandler class...

MrAsm

I've isolated the problem to the following statement:

m_UserFile.ReadFromFile(reinterpret_cast<char*>(&temp_user),iter);

Whenever I remove that line from the function, the error doesn't pop;
therefore it's probably something in that function. Luckily, that
function is the lowest level - it doesn't call any other functions I
wrote. Here's its body:

bool CFileHandler::ReadFromFile (char* ptr, long offset)
{
    bool RetVal=false;
    ifstream in_file;

    memset (ptr, 0, m_BlockSize);
    in_file.open(m_FileName.c_str(), ios::in | ios::binary);

    if (in_file.is_open())
    {
     in_file.seekg(offset + POINTER_SIZE, ios::beg);
                    in_file.read(ptr, m_BlockSize);
        in_file.close();
        RetVal=true;
    }
    else
    {
        RetVal=false;
    }
    return RetVal;
}

Another option I thought of is that the stack could simply run out of
space (I've looked at the call stack, and it has depth of around 12
levels). Could this be what causes the problems? And is there a way to
increase the space allocated for the stack? I'm working in VC++ 6.0.

Thanks,
GK