diff -r a26b90a17c81 -r 8b2d4e5d96e4 lemon/concepts/path.h
--- a/lemon/concepts/path.h	Wed Nov 28 11:58:00 2012 +0100
+++ b/lemon/concepts/path.h	Wed Aug 07 06:55:05 2013 +0200
@@ -75,7 +75,7 @@
       /// \brief Template assigment operator
       template <typename CPath>
       Path& operator=(const CPath& cpath) {
-        ignore_unused_variable_warning(cpath);
+        ::lemon::ignore_unused_variable_warning(cpath);
         return *this;
       }
 
@@ -135,12 +135,12 @@
           e = (i != ii);
           e = (i < ii);
 
-          ignore_unused_variable_warning(l);
-          ignore_unused_variable_warning(pp);
-          ignore_unused_variable_warning(e);
-          ignore_unused_variable_warning(id);
-          ignore_unused_variable_warning(ii);
-          ignore_unused_variable_warning(ed);
+          ::lemon::ignore_unused_variable_warning(l);
+          ::lemon::ignore_unused_variable_warning(pp);
+          ::lemon::ignore_unused_variable_warning(e);
+          ::lemon::ignore_unused_variable_warning(id);
+          ::lemon::ignore_unused_variable_warning(ii);
+          ::lemon::ignore_unused_variable_warning(ed);
         }
       };
 
@@ -162,10 +162,10 @@
           e = (i == INVALID);
           e = (i != INVALID);
 
-          ignore_unused_variable_warning(l);
-          ignore_unused_variable_warning(e);
-          ignore_unused_variable_warning(id);
-          ignore_unused_variable_warning(ed);
+          ::lemon::ignore_unused_variable_warning(l);
+          ::lemon::ignore_unused_variable_warning(e);
+          ::lemon::ignore_unused_variable_warning(id);
+          ::lemon::ignore_unused_variable_warning(ed);
         }
         _Path& p;
         PathDumperConstraints() {}
@@ -188,10 +188,10 @@
           e = (i == INVALID);
           e = (i != INVALID);
 
-          ignore_unused_variable_warning(l);
-          ignore_unused_variable_warning(e);
-          ignore_unused_variable_warning(id);
-          ignore_unused_variable_warning(ed);
+          ::lemon::ignore_unused_variable_warning(l);
+          ::lemon::ignore_unused_variable_warning(e);
+          ::lemon::ignore_unused_variable_warning(id);
+          ::lemon::ignore_unused_variable_warning(ed);
         }
         _Path& p;
         PathDumperConstraints() {}