[Boost-users] ptr_container problem

From: Aljaz (aljaz.fajmut_at_[hidden])
Date: 2007-08-23 10:47:19

Hello

I'm trying to use ptr_vector but I'm having headaches because I have no 
idea why I'm getting this error:

error C2248: 
'boost::ptr_container_detail::reversible_ptr_container<Config,CloneAllocator>::operator 
=' : cannot access private member declared in class 
'boost::ptr_container_detail::reversible_ptr_container<Config,CloneAllocator>'
         with
         [
 
Config=boost::ptr_container_detail::sequence_config<boost::asio::dns::base_nameserver_resource,std::vector<void 
*,std::allocator<void *>>>,
             CloneAllocator=boost::heap_clone_allocator
         ]
         C:\Program 
Files\boost\boost_1_34_0\boost/ptr_container/detail/reversible_ptr_container.hpp(287) 
: see declaration of 
'boost::ptr_container_detail::reversible_ptr_container<Config,CloneAllocator>::operator 
='
         with
         [
 
Config=boost::ptr_container_detail::sequence_config<boost::asio::dns::base_nameserver_resource,std::vector<void 
*,std::allocator<void *>>>,
             CloneAllocator=boost::heap_clone_allocator
         ]
         This diagnostic occurred in the compiler generated function 
'boost::ptr_sequence_adapter<T,VoidPtrSeq,CloneAllocator> 
&boost::ptr_sequence_adapter<T,VoidPtrSeq,CloneAllocator>::operator 
=(const boost::ptr_sequence_adapter<T,VoidPtrSeq,CloneAllocator> &)'
         with
         [
             T=boost::asio::dns::base_nameserver_resource,
             VoidPtrSeq=std::vector<void *,std::allocator<void *>>,
             CloneAllocator=boost::heap_clone_allocator
         ]

My code (simplified):

class base1 {
public:
void somefunc() {
};
};

class main : public base1 {
public:
virtual void somefunc() {
}
};

class derived : public main {
public:
virtual void somefunc() {
}
};

boost::ptr_vector<main> m_vector;

Any Idea what am I doing wrong?
I tried to add do_clone functions/members without success.

Any help is highly appreciated

Regards
A