diff -r b78a46fe8002 -r c18ed26f016c test/hao_orlin_test.cc
--- a/test/hao_orlin_test.cc	Wed Nov 07 18:10:07 2012 +0100
+++ b/test/hao_orlin_test.cc	Wed Nov 28 11:42:38 2012 +0100
@@ -66,6 +66,7 @@
   CapMap cap;
   CutMap cut;
   Value v;
+  ignore_unused_variable_warning(v);
 
   HaoOrlin<Digraph, CapMap> ho_test(g, cap);
   const HaoOrlin<Digraph, CapMap>&