1.1 --- a/lemon/concepts/path.h	Wed Jan 11 13:58:30 2012 +0100
     1.2 +++ b/lemon/concepts/path.h	Fri Jan 20 19:16:43 2012 +0100
     1.3 @@ -159,6 +159,7 @@
     1.4            ignore_unused_variable_warning(ed);
     1.5          }
     1.6          _Path& p;
     1.7 +        PathDumperConstraints() {}
     1.8        };
     1.9  
    1.10        template <typename _Digraph, typename _Path>
    1.11 @@ -184,6 +185,7 @@
    1.12            ignore_unused_variable_warning(ed);
    1.13          }
    1.14          _Path& p;
    1.15 +        PathDumperConstraints() {}
    1.16        };
    1.17  
    1.18      }