simplest pool_alloc example does not work on VC6

From: John Harris (john.harris_at_[hidden])
Date: 2003-04-22 09:19:00

Using   Boost 1.30.0.  MSVC6
Tow problems: (1) I have to #define __WIN32__, and (2) Doesn't compile

Am I doing something wrong, here?

#include "afxwin.h"
#include <map>
#define __WIN32__  // why do I have to define this???
#include "boost/pool/pool_alloc.hpp"

int main()
{
        std::map<int,int,std::less<int>, boost::pool_allocator<int> > 
        return 0;
}

:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\xtree(587) : 
error C2664: 'deallocate' : cannot convert parameter 1 from 'struct 
std::_Tree<int,struct std::pair<int const ,int>,struct 
std::map<int,int,struct std::less<int>,class boost::pool_al
locator<int,struct boost::default_user_allocator_new_delete,class 
boost::details::pool::win32_mutex,32> >::_Kfn,struct 
std::less<int>,class boost::pool_allocator<int,struct 
boost::default_user_allocator_new_delete,class 
boost::details::pool::win32_m
utex,32> >::_Node *' to 'int *const '
        Types pointed to are unrelated; conversion requires 
reinterpret_cast, C-style cast or function-style cast
        C:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\xtree
(587) : while compiling class-template member function 'void 
__thiscall std::_Tree<int,struct std::pair<int const ,int>,struct 
std::map<int,int,struct std::less<int>,class boost::poo
l_allocator<int,struct boost::default_user_allocator_new_delete,class 
boost::details::pool::win32_mutex,32> >::_Kfn,struct 
std::less<int>,class boost::pool_allocator<int,struct 
boost::default_user_allocator_new_delete,class 
boost::details::pool::win
32_mutex,32> >::_Freenode(struct std::_Tree<int,struct std::pair<int 
const ,int>,struct std::map<int,int,struct std::less<int>,class 
boost::pool_allocator<int,struct 
boost::default_user_allocator_new_delete,class 
boost::details::pool::win32_mutex,32
> >::_Kfn,struct std::less<int>,class 
boost::pool_allocator<int,struct 
boost::default_user_allocator_new_delete,class 
boost::details::pool::win32_mutex,32> >::_Node *)'