diff --git a/hash/doc/changes.qbk b/hash/doc/changes.qbk
index 0288804..4d0515a 100644
--- a/hash/doc/changes.qbk
+++ b/hash/doc/changes.qbk
@@ -59,4 +59,15 @@
 * Using the boost typedefs for `long long` and `unsigned long long`.
 * Move the extensions into their own header.
 
+[h2 Boost 1.37.0]
+
+* [@http://svn.boost.org/trac/boost/ticket/2264 Ticket 2264]:
+  In Visual C++, always use C99 float functions for `long double` and `float` as
+  the C++ overloads aren't always availables.
+
+[h2 Boost 1.38.0]
+
+* Changed the warnings in the deprecated headers from 1.34.0 to errors. These
+  will be removed in a future version of Boost.
+
 [endsect]
diff --git a/hash/test/Jamfile.v2 b/hash/test/Jamfile.v2
index da8a0f9..2f771b3 100644
--- a/hash/test/Jamfile.v2
+++ b/hash/test/Jamfile.v2
@@ -40,7 +40,7 @@ test-suite functional/hash
         [ compile-fail hash_no_ext_fail_test.cpp ]
         [ run hash_no_ext_macro_1.cpp ]
         [ run hash_no_ext_macro_2.cpp ]
-        [ run hash_deprecated_headers.cpp : : : <test-info>always_show_run_output ]
+        [ compile-fail hash_deprecated_headers.cpp ]
     ;
 
 build-project ../examples ;
diff --git a/include/boost/functional/hash/deque.hpp b/include/boost/functional/hash/deque.hpp
index 06d23c2..0dd8b99 100644
--- a/include/boost/functional/hash/deque.hpp
+++ b/include/boost/functional/hash/deque.hpp
@@ -3,25 +3,5 @@
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
-//  Based on Peter Dimov's proposal
-//  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
-//  issue 6.18. 
-
-#if !defined(BOOST_FUNCTIONAL_HASH_DEQUE_HPP)
-#define BOOST_FUNCTIONAL_HASH_DEQUE_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-#if defined(__EDG__)
-#elif defined(_MSC_VER) || defined(__BORLANDC__) || defined(__DMC__)
-#pragma message("Warning: boost/functional/hash/deque.hpp is deprecated, use boost/functional/hash.hpp instead.")
-#elif defined(__GNUC__) || defined(__HP_aCC) || \
-    defined(__SUNPRO_CC) || defined(__IBMCPP__)
-#warning "boost/functional/hash/deque.hpp is deprecated, use boost/functional/hash.hpp instead."
-#endif
-
+#error "boost/functional/hash/deque.hpp is no longer supported, use boost/functional/hash.hpp instead."
 #include <boost/functional/hash.hpp>
-
-#endif
diff --git a/include/boost/functional/hash/list.hpp b/include/boost/functional/hash/list.hpp
index 201f6d0..61e7b6d 100644
--- a/include/boost/functional/hash/list.hpp
+++ b/include/boost/functional/hash/list.hpp
@@ -3,25 +3,5 @@
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
-//  Based on Peter Dimov's proposal
-//  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
-//  issue 6.18. 
-
-#if !defined(BOOST_FUNCTIONAL_HASH_LIST_HPP)
-#define BOOST_FUNCTIONAL_HASH_LIST_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-#if defined(__EDG__)
-#elif defined(_MSC_VER) || defined(__BORLANDC__) || defined(__DMC__)
-#pragma message("Warning: boost/functional/hash/list.hpp is deprecated, use boost/functional/hash.hpp instead.")
-#elif defined(__GNUC__) || defined(__HP_aCC) || \
-    defined(__SUNPRO_CC) || defined(__IBMCPP__)
-#warning "boost/functional/hash/list.hpp is deprecated, use boost/functional/hash.hpp instead."
-#endif
-
+#error "boost/functional/hash/list.hpp is no longer supported, use boost/functional/hash.hpp instead."
 #include <boost/functional/hash.hpp>
-
-#endif
diff --git a/include/boost/functional/hash/map.hpp b/include/boost/functional/hash/map.hpp
index 6713d85..2dcd58b 100644
--- a/include/boost/functional/hash/map.hpp
+++ b/include/boost/functional/hash/map.hpp
@@ -3,25 +3,5 @@
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
-//  Based on Peter Dimov's proposal
-//  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
-//  issue 6.18. 
-
-#if !defined(BOOST_FUNCTIONAL_HASH_MAP_HPP)
-#define BOOST_FUNCTIONAL_HASH_MAP_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-#if defined(__EDG__)
-#elif defined(_MSC_VER) || defined(__BORLANDC__) || defined(__DMC__)
-#pragma message("Warning: boost/functional/hash/map.hpp is deprecated, use boost/functional/hash.hpp instead.")
-#elif defined(__GNUC__) || defined(__HP_aCC) || \
-    defined(__SUNPRO_CC) || defined(__IBMCPP__)
-#warning "boost/functional/hash/map.hpp is deprecated, use boost/functional/hash.hpp instead."
-#endif
-
+#error "boost/functional/hash/map.hpp is no longer supported, use boost/functional/hash.hpp instead."
 #include <boost/functional/hash.hpp>
-
-#endif
diff --git a/include/boost/functional/hash/pair.hpp b/include/boost/functional/hash/pair.hpp
index bf076f1..d771460 100644
--- a/include/boost/functional/hash/pair.hpp
+++ b/include/boost/functional/hash/pair.hpp
@@ -3,25 +3,5 @@
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
-//  Based on Peter Dimov's proposal
-//  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
-//  issue 6.18. 
-
-#if !defined(BOOST_FUNCTIONAL_HASH_PAIR_HPP)
-#define BOOST_FUNCTIONAL_HASH_PAIR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-#if defined(__EDG__)
-#elif defined(_MSC_VER) || defined(__BORLANDC__) || defined(__DMC__)
-#pragma message("Warning: boost/functional/hash/pair.hpp is deprecated, use boost/functional/hash.hpp instead.")
-#elif defined(__GNUC__) || defined(__HP_aCC) || \
-    defined(__SUNPRO_CC) || defined(__IBMCPP__)
-#warning "boost/functional/hash/pair.hpp is deprecated, use boost/functional/hash.hpp instead."
-#endif
-
+#error "boost/functional/hash/pair.hpp is no longer supported, use boost/functional/hash.hpp instead."
 #include <boost/functional/hash.hpp>
-
-#endif
diff --git a/include/boost/functional/hash/set.hpp b/include/boost/functional/hash/set.hpp
index 0533e76..e85f80d 100644
--- a/include/boost/functional/hash/set.hpp
+++ b/include/boost/functional/hash/set.hpp
@@ -3,25 +3,5 @@
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
-//  Based on Peter Dimov's proposal
-//  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
-//  issue 6.18. 
-
-#if !defined(BOOST_FUNCTIONAL_HASH_SET_HPP)
-#define BOOST_FUNCTIONAL_HASH_SET_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-#if defined(__EDG__)
-#elif defined(_MSC_VER) || defined(__BORLANDC__) || defined(__DMC__)
-#pragma message("Warning: boost/functional/hash/set.hpp is deprecated, use boost/functional/hash.hpp instead.")
-#elif defined(__GNUC__) || defined(__HP_aCC) || \
-    defined(__SUNPRO_CC) || defined(__IBMCPP__)
-#warning "boost/functional/hash/set.hpp is deprecated, use boost/functional/hash.hpp instead."
-#endif
-
+#error "boost/functional/hash/set.hpp is no longer supported, use boost/functional/hash.hpp instead."
 #include <boost/functional/hash.hpp>
-
-#endif
diff --git a/include/boost/functional/hash/vector.hpp b/include/boost/functional/hash/vector.hpp
index 8bab799..7fe2be6 100644
--- a/include/boost/functional/hash/vector.hpp
+++ b/include/boost/functional/hash/vector.hpp
@@ -3,25 +3,5 @@
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
-//  Based on Peter Dimov's proposal
-//  http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2005/n1756.pdf
-//  issue 6.18. 
-
-#if !defined(BOOST_FUNCTIONAL_HASH_VECTOR_HPP)
-#define BOOST_FUNCTIONAL_HASH_VECTOR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
-# pragma once
-#endif
-
-#if defined(__EDG__)
-#elif defined(_MSC_VER) || defined(__BORLANDC__) || defined(__DMC__)
-#pragma message("Warning: boost/functional/hash/vector.hpp is deprecated, use boost/functional/hash.hpp instead.")
-#elif defined(__GNUC__) || defined(__HP_aCC) || \
-    defined(__SUNPRO_CC) || defined(__IBMCPP__)
-#warning "boost/functional/hash/vector.hpp is deprecated, use boost/functional/hash.hpp instead."
-#endif
-
+#error "boost/functional/hash/vector.hpp is no longer supported, use boost/functional/hash.hpp instead."
 #include <boost/functional/hash.hpp>
-
-#endif