Blowing core - anyone have any ideas?

Ok, I'm trying to finish cleaning up libpq++ and with v6.4.0 and with 
the snapshot I grabbed a few minutes ago I get the same thing.

The library builds and installs fine.
The examples build fine.
The examples run fine UNTIL they end.  After the program ends and the
destructor finishes I get a core dump from a seg fault.  Running it in
the debugger (the library and the example are both compiled with -g) I 
get this for a backtrace:

(gdb) bt
#0  0x1000000 in ?? ()
#1  0x38000000 in ?? ()
Error accessing memory address 0x7ec1e: Invalid argument.
(gdb) 

Any ideas where to look?   This is on FreeBSD 2.2.6 (can't upgrade it 
just yet - it's too busy).

Vince.
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