Re: [Boost-users] [boost::enable_shared_from_this] ininheritancetreethrows bad_weak_ptr exception

Andrew Holden:

Peter Dimov wrote:

...

In this case, you can use

struct B : A { shared_ptr<B> getB() { return dynamic_pointer_cast<B>( shared_from_this() ); } };

after making A polymorphic.

Is there any reason you couldn't use static_pointer_cast? You know for a fact that the cast to B will work, as getB is a member function of B. I think this will also remove the need to make A polymorphic.

static_pointer_cast will work too, as long as no virtual inheritance is involved (D: C, D: B, B: A, C: A).