Function priv_move_assign

extern/boost/boost/container/vector.hpp:2450–2467

   template<class OtherA>
   void priv_move_assign(BOOST_RV_REF_BEG vector<T, OtherA, Options> BOOST_RV_REF_END x
      , typename dtl::enable_if_c
         < dtl::is_version<typename real_allocator<T, OtherA>::type, 0>::value >::type * = 0)
   {
      if(!dtl::is_same<typename real_allocator<T, OtherA>::type, allocator_type>::value &&
          this->capacity() < x.size()){
         alloc_holder_t::on_capacity_overflow();
      }
      T* const this_start  = this->priv_raw_begin();
      T* const other_start = x.priv_raw_begin();
      const size_type this_sz  = m_holder.m_size;
      const size_type other_sz = static_cast<size_type>(x.m_holder.m_size);
      boost::container::move_assign_range_alloc_n(this->m_holder.alloc(), other_start, other_sz, this_start, this_sz);
      m_holder.set_stored_size(other_sz);
      //Not emptying the source container seems to be confusing for users as drop-in
      //replacement for non-static vectors, so clear it.
      x.clear();
   }

   template<class OtherA>
   void priv_move_assign(BOOST_RV_REF_BEG vector<T, OtherA, Options> BOOST_RV_REF_END x