diff -r 14394c9603c2 -r bdfc038f364c lemon/concepts/digraph.h
--- a/lemon/concepts/digraph.h	Tue Aug 06 12:19:11 2013 +0200
+++ b/lemon/concepts/digraph.h	Wed Aug 07 06:31:47 2013 +0200
@@ -324,7 +324,7 @@
 
         /// This constructor sets the iterator to the first arc of \c g.
         ///@param g the digraph
-        ArcIt(const Digraph& g) { ignore_unused_variable_warning(g); }
+        ArcIt(const Digraph& g) { ::lemon::ignore_unused_variable_warning(g); }
         /// Arc -> ArcIt conversion
 
         /// Sets the iterator to the value of the trivial iterator \c e.