diff -r cd72eae05bdf -r 3c00344f49c9 test/suurballe_test.cc
--- a/test/suurballe_test.cc	Mon Jul 16 16:21:40 2018 +0200
+++ b/test/suurballe_test.cc	Wed Oct 17 19:14:07 2018 +0200
@@ -2,7 +2,7 @@
  *
  * This file is a part of LEMON, a generic C++ optimization library.
  *
- * Copyright (C) 2003-2010
+ * Copyright (C) 2003-2013
  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
  * (Egervary Research Group on Combinatorial Optimization, EGRES).
  *
@@ -117,6 +117,8 @@
 
   int f;
   VType c;
+  ::lemon::ignore_unused_variable_warning(f,c);
+
   c = const_suurb_test.totalLength();
   f = const_suurb_test.flow(e);
   const SuurballeType::FlowMap& fm =
@@ -127,8 +129,8 @@
   k = const_suurb_test.pathNum();
   Path<Digraph> p = const_suurb_test.path(k);
 
-  ignore_unused_variable_warning(fm);
-  ignore_unused_variable_warning(pm);
+  ::lemon::ignore_unused_variable_warning(fm);
+  ::lemon::ignore_unused_variable_warning(pm);
 }
 
 // Check the feasibility of the flow