Re: [boost] Circular dependencies and smart pointers

From: Christian Kreibich (kreibich_at_[hidden])
Date: 2002-04-07 08:02:54

Peter Dimov wrote:
> 
> This problem is not shared_ptr-specific; it usually comes up with containers
> and iterators. The solution (within the current language) is to define the
> types outside the class:
> 
> class A;
> typedef boost::shared_ptr<A> A_ptr;
> class A
> {
> public:
>     typedef A_ptr ptr;
> };
> 
> You can still keep the A::ptr notation, but now you can break circular
> dependencies by using the global A_ptr alias.

Mhmm ... thanks Peter, I had already tried this, and get the following
result using g++ (2.95.4):

boost/checked_delete.hpp:26: `sizeof' applied to incomplete type `A'
boost/checked_delete.hpp:27: invalid use of undefined type `class A'

That's when I gave up :) Am I missing something?

Best regards,
Christian
-- 
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