I wouldn't log to syserr using C++ streams - that could impact constructor order.

I'd recommend only C-style IO and the use of "fprintf( stderr, ... )". Don't even do any additional informational-style calls, for example if the objects have some equivalent of Java's tostring() method. No C++ at all.

If you're trying to run down problems C++ ordering problems, don't make it more complex with debugging code that you won't even compile much less run in a production version of the software.