[C++-sig] cross-module shared_ptr downcast

[Jon Anderson]

I have a Container that holds shared_ptr's to a Base class.  I can 
successfully add and retrieve shared_ptrs to a Derived class, properly 
downcasted on retrieval, as along as the bindings for both the Base and 
Derived class are defined in the same module.  However, when I have the Base 
class bindings defined in module A, and the Container and Derived class 
bindings defined in module B, the down cast no longer happens.  Each module 
is a separate .so.

Should this work, or am I limited to having them all in the same module in 
order to make the downcasts work?

Thanks,
Jon