--- /tmp/all-buggy.hpp	2008-12-18 15:44:44.000000000 +0100
+++ /usr/include/boost/fusion/algorithm/query/detail/all.hpp	2008-12-18 15:46:32.000000000 +0100
@@ -68,6 +68,20 @@
     };
 
     template<>
+    struct unrolled_all<4>
+    {
+        template <typename It, typename F>
+        static bool call(It const& it, F f)
+        {
+            return 
+                f(*it) && 
+                f(*fusion::advance_c<1>(it)) &&
+                f(*fusion::advance_c<2>(it)) &&
+                f(*fusion::advance_c<3>(it));
+        }
+    };
+
+    template<>
     struct unrolled_all<3>
     {
         template <typename It, typename F>