Boost Users :
Subject: [Boost-users] [Serialization] 1.56.0 - polymorphic archive saving std::shared_ptr<>, no member named "get_helper"
From: Todd Seiler (todd.seiler_at_[hidden])
Date: 2014-08-15 12:50:35
I'm trying to serialize a std::shared_ptr using a polymorphic archive
interface, but it complains about no "get_helper".
Specifically clang states:
No member named 'get_helper' in 'boost::archive::polymorphic_iarchive'"
I tried including "boost/serialization/shared_ptr_helper.hpp", but this
didn't seem to have what I needed.
I did see the new stuff in "boost/serialization/shared_ptr.hpp" regarding
std::shared_ptr<>, so I'm hopeful.
Most of what I'm doing requires the serialization code to be inside of
dll's or dylibs, so I believe I'm going down the correct path in using
void save(std::shared_ptr<developer> p)
boost::archive::polymorphic_oarchive & oa_interface = oa;
oa_interface << p;
boost::archive::polymorphic_iarchive & ia_interface = ia;
ia_interface >> p;
std::cout << p->getName() << std::endl;
std::cout << p->age() << std::endl;
std::cout << p->language() << std::endl;
std::cout << p->getLangVer() << std::endl;
The compiler error specifically points to this function in shared_ptr.hpp
template<class Archive, class T>
inline void load(
Archive & ar,
std::shared_ptr< T > &t,
const unsigned int /*file_version*/
// The most common cause of trapping here would be serializing
// something like shared_ptr<int>. This occurs because int
// is never tracked by default. Wrap int in a trackable type
BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never));
ar >> boost::serialization::make_nvp("px", r);
boost::serialization::shared_ptr_helper<std::shared_ptr> & h =
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