diff -r b78a46fe8002 -r c18ed26f016c test/dfs_test.cc
--- a/test/dfs_test.cc	Wed Nov 07 18:10:07 2012 +0100
+++ b/test/dfs_test.cc	Wed Nov 28 11:42:38 2012 +0100
@@ -67,6 +67,8 @@
   Arc e;
   int l, i;
   bool b;
+  ignore_unused_variable_warning(l,i,b);
+
   DType::DistMap d(G);
   DType::PredMap p(G);
   Path<Digraph> pp;
@@ -151,6 +153,8 @@
 
   Digraph g;
   bool b;
+  ignore_unused_variable_warning(b);
+
   dfs(g).run(Node());
   b=dfs(g).run(Node(),Node());
   dfs(g).run();