diff -r 774349a16ba0 -r 1fe3b4ad8caa test/circulation_test.cc
--- a/test/circulation_test.cc	Wed Nov 07 18:13:26 2012 +0100
+++ b/test/circulation_test.cc	Wed Nov 28 12:02:36 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>