m_p_v_13@yahoo.com (m v) writes:

> What could be causing this?

Different versions of the compiler, or different compilers, or
different "pack" flags during the compilation of the 2 modules,
or using different STL implementations (e.g. one using the xlC
implementation, the other STLport).

Did you compile both modules yourself?
On the same machine? With the same flags?

> I suspect some static or dynamic link thing.

The data layout in std::string (or any other class) should not be
affected by linking.

> I have some older builds of the program, with essentially the same
> code, that don't have this problem.

Perhaps you've upgraded the compiler but rebuilt only parts of
the program?

Cheers,
--
In order to understand recursion you must first understand recursion.
Remove /-nsp/ for email.