diff -r 7d32a2d6ed59 -r 881e4168c65f test/bellman_ford_test.cc
--- a/test/bellman_ford_test.cc	Sat Oct 07 00:19:19 2017 +0200
+++ b/test/bellman_ford_test.cc	Sat Oct 07 00:21:15 2017 +0200
@@ -100,11 +100,13 @@
     pp = const_bf_test.path(t);
     pp = const_bf_test.negativeCycle();
 
+#ifdef LEMON_CXX11
     for (BF::ActiveIt it(const_bf_test); it != INVALID; ++it) {}
     for (auto n: const_bf_test.activeNodes()) { ::lemon::ignore_unused_variable_warning(n); }
     for (Digraph::Node n: const_bf_test.activeNodes()) {
       ::lemon::ignore_unused_variable_warning(n);
     }
+#endif
   }
   {
     BF::SetPredMap<concepts::ReadWriteMap<Node,Arc> >