Hi,
I encountered problems while trying to serialize hash_maps which use pool allocators ( gcc: no member 'serialize' ). I had a look into "boost/serialization/hash_map.hpp" and realized a problem in the declaration of hash_map in here:

BOOST_STD_EXTENSION_NAMESPACE::hash_map<Key, HashFcn, EqualKey, Allocator>

should be

BOOST_STD_EXTENSION_NAMESPACE::hash_map<Key, Value, HashFcn, EqualKey, Allocator>

It seems that nobody used the hash_map with more than 4 template parameters together with boost::serialization before.

It would be nice, if the following changes for "boost/serialization/hash_map.hpp" would be adopted into the repos.

Cheers, Jan.

--- /boost-trunk/boost/serialization/hash_map.hpp    2007-08-01 09:03: 26.000000000 +0200
+++ /boost/serialization/hash_map.hpp    2007-12-17 11:36:27.000000000 +0100
@@ -33,3 +33,4 @@
     class Archive,
-    class Key,
+    class Key,
+    class Value,
     class HashFcn,
@@ -41,3 +42,3 @@
     const BOOST_STD_EXTENSION_NAMESPACE::hash_map<
-        Key, HashFcn, EqualKey, Allocator
+        Key, Value, HashFcn, EqualKey, Allocator
     > &t,
@@ -48,3 +49,3 @@
         BOOST_STD_EXTENSION_NAMESPACE::hash_map<
-            Key, HashFcn, EqualKey, Allocator
+            Key, Value, HashFcn, EqualKey, Allocator
         >
@@ -55,3 +56,4 @@
     class Archive,
-    class Key,
+    class Key,
+    class Value,
     class HashFcn,
@@ -63,3 +65,3 @@
     BOOST_STD_EXTENSION_NAMESPACE::hash_map<
-        Key, HashFcn, EqualKey, Allocator
+        Key, Value, HashFcn, EqualKey, Allocator
     > &t,
@@ -70,3 +72,3 @@
         BOOST_STD_EXTENSION_NAMESPACE::hash_map<
-            Key, HashFcn, EqualKey, Allocator
+            Key, Value, HashFcn, EqualKey, Allocator
         >,
@@ -75,3 +77,3 @@
             BOOST_STD_EXTENSION_NAMESPACE::hash_map<
-                Key, HashFcn, EqualKey, Allocator
+                Key, Value, HashFcn, EqualKey, Allocator
             >
@@ -85,3 +87,4 @@
     class Archive,
-    class Key,
+    class Key,
+    class Value,
     class HashFcn,
@@ -93,3 +96,3 @@
     BOOST_STD_EXTENSION_NAMESPACE::hash_map<
-        Key, HashFcn, EqualKey, Allocator
+        Key, Value, HashFcn, EqualKey, Allocator
     > &t,