[Boost-users] Uninitialized value p$m_value

From: Paul (linuxkaffee_at_[hidden])
Date: 2007-06-07 06:28:03

Hi,

I'm trying to learn how to use the Boost Graph Library. Here
is a very simple code example.

#include <boost/graph/adjacency_list.hpp>
#include <string>

int main( void )
{
  using namespace std;
  using namespace boost;
  typedef adjacency_list< listS, vecS, directedS,
          // Vertex properties
          property< vertex_name_t, std::string >,
          // Edge properties
          property< edge_weight_t, int > > Graph;

  Graph graph;

  // Graph traits used to access graph's iterator types
  graph_traits< Graph >::vertex_descriptor a, b;

  a = add_vertex( graph );

  b = add_vertex( graph );

  graph_traits< Graph >::edge_descriptor ed;
  bool inserted;

  tie( ed, inserted ) = add_edge( a, b, graph ); // LINE 26

  return 0;
}

When I compile this with g++ v4, I get on my Debian Etch system the
warning for line 26: 

/usr/include/boost/graph/detail/adjacency_list.hpp:263:
warning: 'p$m_value' is used uninitialized in this function

Line 263 in adjacency_list.hpp looks as follows:
inline stored_edge_property(Vertex target,
                                  const Property& p = Property())
        : stored_edge<Vertex>(target), m_property(new Property(p)) { }

What am I doing wrong and how can I fix that?

Thank you.

Regards,
Paul