#include <boost/graph/adjacency_list.hpp>
#include <boost/property_map/dynamic_property_map.hpp>

struct N1 { std::string _id; };
struct N2 : public N1 {};
struct C {};

template<typename N>
struct MyClass
{
  typedef boost::adjacency_list<boost::listS, boost::listS, 
				boost::bidirectionalS, 
				N, C> graph_t;
  void test()
  {
    boost::dynamic_properties dp;
    graph_t g;
    dp.property("node_id", get(&N::_id, g));
  }
};

// this main compiles with boost 1.38 and boost 1.40
// int main()
// {
//   MyClass<N1> a;
//   a.test();
// }

// this ones compiles with boost 1.38 but not with boost 1.40
int main()
{
  MyClass<N2> a;
  a.test();
}