diff -r b208de044477 -r 8a3fb3155dca test/maps_test.cc
--- a/test/maps_test.cc	Wed Jul 24 01:08:34 2013 +0200
+++ b/test/maps_test.cc	Wed Jul 24 10:21:35 2013 +0200
@@ -535,7 +535,8 @@
           "Wrong SourceMap or TargetMap");
 
     typedef Orienter<Graph, const ConstMap<Edge, bool> > Digraph;
-    Digraph dgr(gr, constMap<Edge, bool>(true));
+    ConstMap<Edge, bool> true_edge_map(true);
+    Digraph dgr(gr, true_edge_map);
     OutDegMap<Digraph> odm(dgr);
     InDegMap<Digraph> idm(dgr);