[C++-sig] how to handle bare references with a shared_ptr HeldType

[Hans Meine]

On Thursday 22 September 2005 00:20, Gregory Price wrote:
> class A {
>     // ... lots of stuff ...
> };
>
> class B {
>     shared_ptr<A> a;
> public:
>     A& getA() { return *a; };
> };
> """
>
> I'm exposing A with a HeldType of shared_ptr<A>.
>
> [...]
> I could use copy_non_const_reference to make a
> new copy of the A instance.  That'd be safe,
> but A instances are big and I'd rather not copy them.

Hmm.  What about return_internal_reference (which I am using a lot)?
AFAICS, the C++ A object will not be deleted as long as B is not deleted,  
because of the shared ptr.  OTOH, during the lifetime of the A python 
wrapper, B will not get deleted because of the custodian-ward relationship 
initialized via return_internal_reference.  Does that make sense?

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