diff -r dceba191c00d -r fb1c7da561ce lemon/concepts/digraph.h
--- a/lemon/concepts/digraph.h	Fri Aug 09 11:28:17 2013 +0200
+++ b/lemon/concepts/digraph.h	Fri Aug 09 11:29:40 2013 +0200
@@ -312,7 +312,9 @@
 
         /// Sets the iterator to the first arc of the given digraph.
         ///
-        explicit ArcIt(const Digraph& g) { ::lemon::ignore_unused_variable_warning(g); }
+        explicit ArcIt(const Digraph& g) {
+          ::lemon::ignore_unused_variable_warning(g);
+        }
         /// Sets the iterator to the given arc.
 
         /// Sets the iterator to the given arc of the given digraph.