id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 7327,Use traits to create null_vertex().,Ivan A. Melnikov ,Jeremiah Willcock,"In several places Boost.Graph uses Graph::null_vertex(), where graph traits should be used. This breaks compilation when Graph is external type with no static null_vertex() method. I will attach a patch that fixes this problem where it hit me, but there might be more.",Bugs,closed,Boost 1.52.0,graph,Boost 1.51.0,Problem,fixed,,