来自抽象基础的次要化因增强序列化而失败

我能够使用boost :: serialization通过抽象基础序列化对象。但是，当我尝试添加避免化时，我会收到有关抽象基础的编译错误。这是我的序列化代码可行：

/*
    g++ -Iinclude/ -Llib -lboost_serialization ~/Desktop/ser_ex.cpp -o stest
*/
#include <boost/serialization/serialization.hpp>
#include <boost/serialization/nvp.hpp>
#include <boost/archive/binary_oarchive.hpp>
#include <boost/serialization/vector.hpp>
#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <boost/serialization/export.hpp>
#include <boost/serialization/shared_ptr.hpp>
#include <memory>
namespace bser = boost::serialization;
using namespace std;
namespace foo {
class AA
{
public:
    virtual void foo() = 0;
    virtual ~AA() {}
    std::string name;
    template<class Archive>
    void serialize(Archive & ar, unsigned int )
    {
        ar & name;
    }
};
BOOST_SERIALIZATION_ASSUME_ABSTRACT( AA );
class BB : public AA
{
public:
    virtual void foo() = 0;
    virtual void bar() = 0;
    virtual ~BB () {}
    int thing;
    template<class Archive>
    void serialize(Archive & ar, unsigned int )
    {
        ar.template register_type< AA >();
        ar & boost::serialization::base_object<AA>(*this);
        ar & thing;
    }
};
BOOST_SERIALIZATION_ASSUME_ABSTRACT( BB );
class CC : public BB
{
public:
    virtual void foo() {}
    virtual void bar() {}
    virtual ~CC() {}
    int otherThing;
    template<class Archive>
    void serialize(Archive & ar, unsigned int )
    {
        ar.template register_type< BB >();
        ar & boost::serialization::base_object<BB>(*this);
        ar & otherThing;
    }
};
}
BOOST_CLASS_EXPORT_KEY(foo::CC)
BOOST_CLASS_EXPORT_IMPLEMENT(foo::CC)

int main (int , char const **)
{
    std::vector< shared_ptr<foo::AA> > vv;
    vv.push_back( make_shared<foo::CC>() );
    std::ostringstream oss;
    boost::archive::binary_oarchive out_archive( oss );
    out_archive << vv;
    std::cout << oss.str() << std::endl;
}

只需在binary_oarchive.hpp的包含下方添加此行，就会导致代码不编译。

#include <boost/archive/binary_iarchive.hpp>

dawilcox-macOS:debug dawilcox$ make foo
dependencies: foo_main.o
building: foo_main.o
In file included from /Users/dawilcox/src/axle/foo_main.cpp:5:
In file included from /usr/local/include/boost/serialization/serialization.hpp:43:
/usr/local/include/boost/serialization/access.hpp:130:17: error: allocating an object of abstract class type 'foo::AA'
        ::new(t)T;

Boost抱怨它不能实例化我的基本类型。这就是重点 - 这是一种抽象的基本类型。

应有什么理由化抽象基础的正确方法？