[Boost-users] [Serialization] [Ptr_container] Serializing a boost::ptr_vector fails

Subject: [Boost-users] [Serialization] [Ptr_container] Serializing a boost::ptr_vector fails
From: Philipp Münzel (mailing-lists_at_[hidden])
Date: 2011-06-17 10:18:26

Dear list,

I want to use boost::ptr_vector<> in conjunction with boost::serialization.
The ptr_cotainer documentation says:

> As of version 1.34.0 of Boost, the library supports serialization via Boost.Serialization.
> Of course, for serialization to work it is required that the stored type itself is serializable. For maps, both the key type and the mapped type must be serializable.

However, when I create a class like this:

#include <boost/ptr_container/ptr_vector.hpp>
#include <boost/serialization/access.hpp>

class Foo {
    boost::ptr_vector<int> the_vector_
    friend class boost::serialization::access;

    template<class Archive>
    void serialize(Archive & ar, const unsigned int)
    {
        ar & the_vector_;
    }
}

and then try to serialize it:

std::ofstream ofs("filename");
Foo f;
boost::archive::text_oarchive oa(ofs);
oa << f;

I'm getting the following error, using gcc 4.2.1 and boost 1.46.1:

/usr/local/include/boost/serialization/access.hpp:118: error: 'class
boost::ptr_vector<Waypoint, boost::heap_clone_allocator, std::allocator<void*> >' 
has no member named 'serialize'

How can I serialize a boost::ptr_container ?

Regards,
Philipp