Re: [Boost-users] [Serialisation] Question on shared_ptr'sandbase/derived classes

From: Hughes, James (jhughes_at_[hidden])
Date: 2007-05-02 09:17:39

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] 
> [mailto:boost-users-bounces_at_[hidden]] On Behalf Of Robert Ramey
> Sent: 02 May 2007 14:08
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] [Serialisation] Question on 
> shared_ptr'sandbase/derived classes
> 
> Hughes, James wrote:
> > Hi All,
> >
> > I am trying to serialise a vector of shared_ptr's which point to a 
> > base class which may be one of a number of derived class (Not 
> > polymorphic in that the base class has no virtual functions 
> - its just 
> > supplies base functionality to derived classes)
> 
> I don't think this is generally possible.
> 
> The default extended type info relies on dynamic cast for downcasting.
> 
> Try making at least one function in the base class virtual.

Hello Robert,

I just had a look through the class, and it does have some virtual
functions so that doesn't appear to be the problem. Would just having a
virtual destructor be good enough anyway?

> 
> Robert Ramey
> 
> 
> 
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