Function shared_ptr

extern/boost/boost/smart_ptr/shared_ptr.hpp:507–515

    template<class Y>
    explicit shared_ptr( std::auto_ptr<Y> & r ): px(r.get()), pn()
    {
        boost::detail::sp_assert_convertible< Y, T >();

        Y * tmp = r.get();
        pn = boost::detail::shared_count( r );

        boost::detail::sp_deleter_construct( this, tmp );
    }

#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )