diff -r a323456bf7c8 -r f531c16dd923 lemon/dfs.h
--- a/lemon/dfs.h	Wed Oct 05 16:45:37 2005 +0000
+++ b/lemon/dfs.h	Thu Oct 06 09:37:53 2005 +0000
@@ -214,8 +214,12 @@
 	_processed = Traits::createProcessedMap(*G);
       }
     }
+
+  protected:
+
+    Dfs() {}
     
-  public :
+  public:
 
     typedef Dfs Create;