diff -r 00f8d9f9920d -r d216e1c8b3fa test/circulation_test.cc
--- a/test/circulation_test.cc	Thu Sep 13 12:02:27 2012 +0200
+++ b/test/circulation_test.cc	Wed Nov 28 11:54:43 2012 +0100
@@ -73,6 +73,7 @@
   BarrierMap bar;
   VType v;
   bool b;
+  ignore_unused_variable_warning(v,b);
 
   typedef Circulation<Digraph, CapMap, CapMap, SupplyMap>
             ::SetFlowMap<FlowMap>