[luabind] Protecting memory

[Colin G. / c. <con...@gm...>]

Hi,

I'm new to this mailing list and quite new to luabind too.
I'm creating a 2D game engine with lua scripting and I wich to protect the
memory (against segmentation faults).
Some of my functions return pointers to objects, and these objects can be
deleted later by the engine.
When the user uses a pointer, I would like to check if this pointer is
still valid before using it in my C++ code.
I can easily do that if the pointer in a function argument but I don't know
how to that when the user use the member of the object.

What is the good way to do it with luabind ?

Thanks in advance !