Serializing a COleDateTime object failes with VC++ 2005

m_pTime =new Dat_DateTime; // Dat_DateTime is derived from COleDateTime
m_pTime->m_status = COleDateTime::valid;
ar >> m_pTime->m_dt; // ar is of typeCArchive&

When I compile this with VC++ 2003 the Watch window looks like this (as it should):

- m_pTime 0x0af92470 Dat_DateTime*
- ATL::COleDateTime {...} ATL::COleDateTime
m_dt 38426.54724537037 double
m_status 0 ATL::COleDateTime::DateTimeStatus

But when I compile with VC++ 2005 (unchanged project settings) and test using the same input data I get this at the same break location:

- m_pTime 0x0807b968 Dat_DateTime*
- ATL::COleDateTime {...} ATL::COleDateTime
m_dt 38426.5 double
m_status error: unable to access invalid memory location ATL::COleDateTime::DateTimeStatus

and I get an exception when trying to access this variable later on. (note: the value "38426.5" is not a typo, it really looks truncated like this).

What is happening here? Is this a bug or can I do something to fix this behavior?

Thanks.
Manfred

[1264 byte] By [ManfredD] at [2008-2-27]