dynamic_cast returns NULL if argument passed from dynamic_library

[David]

Hi,

I'm trying to use dynamic_cast on an object passed from the .so loaded with
dlopen. I do everything that http://gcc.gnu.org/faq.html#dso suggests. It
still fails. It works with MSVC++ 6.0 and if the code is directly linked
against the library.

I wonder if I could somehow force use the older method of string comparisons
to determine type equality? Also, the compiler is configured
with --disable-namespaces, I wonder if this has any effect?

Any suggestions would be appreciated.

Thanks.

David.