Re: Program Crashes On Exit

From:

"Tom Serface" <tom.nospam@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 6 Dec 2007 21:08:45 -0800

Message-ID:

<560F84A9-5E5F-4FFC-B555-84A3715A6F41@microsoft.com>

It's tough to tell from the code you posted, but you could be getting hit by
a reference count thing in CString. Is it msg that has a "bad pointer". If
so, then it could be that the optimizer decided to pass it through as a
reference, but the original got deleted. I haven't seen that happen in a
long time though. Are you using 6.0?

Tom

"billyard" <dmetcalf@columbus.rr.com> wrote in message
news:4758ae02$0$8659$4c368faf@roadrunner.com...

I must be close, because I think that's what I'm doing. The only thing I
wasn't doing was handling it on the OnClose event. I added the OnClose
event and the problem still exists. Here's some of the code - I hope this
makes it apparent what I'm doing wrong. Thanks again in advance.

void CMainFrame::OnMailGetNewMail()
{
...
myPOP3.Connect(pszUser, pszPassword, false);
myPOP3.GetStat(&strStat);
CString NumberOfEmails = strStat.Mid(0,strStat.Find(" "));
int intEmails = atoi(NumberOfEmails);

for ( int i = 1; i <= intEmails; i++)
{
myPOP3.GetMail(i, &strMail);
}
...

void CMainFrame::OnClose()
{
myPOP3.Close();
CFrameWnd::OnClose();
}

BOOL CPop3::Close()
{
DisConnect();
WaitForThreadExit();
// Disable receiving on ServerSock.
shutdown( m_sPop3Socket, 0x00 );
// Close the socket.
closesocket( m_sPop3Socket );
WSACleanup();
m_bSocketOK = false;
m_bConnected = false;
return true;
}

BOOL CPop3::SetLastError(CString msg)
{
m_strLastError = msg; // <<<<<--- WHERE ERROR OCCURS - BAD PTR
return true;
}

The error ONLY happens if I stop the program while it is retrieving mail.
Any ideas?