Re: [Boost-users] [serialization] serialization of an empty weak_ptr

From: Peter Dimov (pdimov_at_[hidden])
Date: 2006-11-22 13:13:54

Mikko Vainio wrote:
> Hi,
> 
> I'm trying to serialize an object of class X that has a member
> boost::weak_ptr< X >. The weak pointer may as well be empty and the
> object is still in valid state - at least in this context. The
> serialization code, however, tries to make a shared_ptr out of the
> weak_ptr, which throws a bad_weak_ptr when the weak_ptr is empty.
> Should the weak_ptr be checked for expired() before trying to make a
> shared_ptr of it?

The line

    const boost::shared_ptr<T> sp(t);

should be

    const boost::shared_ptr<T> sp = t.lock();