diff --git a/include/boost/detail/container_fwd.hpp b/include/boost/detail/container_fwd.hpp
index 1a58935..6716afd 100644
--- a/include/boost/detail/container_fwd.hpp
+++ b/include/boost/detail/container_fwd.hpp
@@ -1,25 +1,75 @@
 
-// Copyright 2005-2008 Daniel James.
+// Copyright 2005-2011 Daniel James.
 // 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)
 
+// Note: if you change this include guard, you also need to change
+// container_fwd_compile_fail.cpp
 #if !defined(BOOST_DETAIL_CONTAINER_FWD_HPP)
 #define BOOST_DETAIL_CONTAINER_FWD_HPP
 
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+#if defined(_MSC_VER) && (_MSC_VER >= 1020) && \
+    !defined(BOOST_DETAIL_TEST_CONFIG_ONLY)
 # pragma once
 #endif
 
 #include <boost/config.hpp>
 #include <boost/detail/workaround.hpp>
 
-#if defined(BOOST_DETAIL_NO_CONTAINER_FWD) \
-    || ((defined(__GLIBCPP__) || defined(__GLIBCXX__)) \
-        && (defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PARALLEL))) \
-    || BOOST_WORKAROUND(__BORLANDC__, > 0x551) \
-    || BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x842)) \
-    || (defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)) \
-    || (defined(_LIBCPP_VERSION))
+#if !defined(BOOST_DETAIL_NO_CONTAINER_FWD)
+#  if defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION)
+     // STLport
+#    define BOOST_DETAIL_NO_CONTAINER_FWD
+#  elif defined(__LIBCOMO__)
+     // Comeau STL:
+#    define BOOST_DETAIL_NO_CONTAINER_FWD
+#  elif defined(__STD_RWCOMPILER_H__) || defined(_RWSTD_VER)
+     // Rogue Wave library:
+#    define BOOST_DETAIL_NO_CONTAINER_FWD
+#  elif defined(_LIBCPP_VERSION)
+     // libc++
+#    define BOOST_DETAIL_NO_CONTAINER_FWD
+#  elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
+     // GNU libstdc++ 3
+#    if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PARALLEL)
+#      define BOOST_DETAIL_NO_CONTAINER_FWD
+#    endif
+#  elif defined(__STL_CONFIG_H)
+     // generic SGI STL
+     //
+     // Forward declaration seems to be okay, but it has a copule of odd
+     // implementations.
+#    define BOOST_CONTAINER_FWD_BAD_BITSET
+#    if !defined(__STL_NON_TYPE_TMPL_PARAM_BUG)
+#      define BOOST_CONTAINER_FWD_BAD_DEQUE
+#     endif
+#  elif defined(__MSL_CPP__)
+     // MSL standard lib:
+#    define BOOST_DETAIL_NO_CONTAINER_FWD
+#  elif defined(__IBMCPP__)
+     // The default VACPP std lib, forward declaration seems to be fine.
+#  elif defined(MSIPL_COMPILE_H)
+     // Modena C++ standard library
+#    define BOOST_DETAIL_NO_CONTAINER_FWD
+#  elif (defined(_YVALS) && !defined(__IBMCPP__)) || defined(_CPPLIB_VER)
+     // Dinkumware Library (this has to appear after any possible replacement
+     // libraries)
+     //
+     // Works fine.
+#  else
+#    define BOOST_DETAIL_NO_CONTAINER_FWD
+#  endif
+#endif
+
+// BOOST_DETAIL_TEST_* macros are for testing only
+// and shouldn't be relied upon. But you can use
+// BOOST_DETAIL_NO_CONTAINER_FWD to prevent forward
+// declaration of containers.
+
+#if !defined(BOOST_DETAIL_TEST_CONFIG_ONLY)
+
+#if defined(BOOST_DETAIL_NO_CONTAINER_FWD) && \
+    !defined(BOOST_DETAIL_TEST_FORCE_CONTAINER_FWD)
 
 #include <deque>
 #include <list>
@@ -34,17 +84,6 @@
 
 #include <cstddef>
 
-#if !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION) && \
-        defined(__STL_CONFIG_H)
-
-#define BOOST_CONTAINER_FWD_BAD_BITSET
-
-#if !defined(__STL_NON_TYPE_TMPL_PARAM_BUG)
-#define BOOST_CONTAINER_FWD_BAD_DEQUE
-#endif
-
-#endif
-
 #if defined(BOOST_CONTAINER_FWD_BAD_DEQUE)
 #include <deque>
 #endif
@@ -74,11 +113,7 @@ namespace std
     #else
         template <class T> class complex;
     #endif
-}
 
-// gcc 3.4 and greater
-namespace std
-{
 #if !defined(BOOST_CONTAINER_FWD_BAD_DEQUE)
     template <class T, class Allocator> class deque;
 #endif
@@ -101,6 +136,9 @@ namespace std
 #pragma warning(pop)
 #endif
 
-#endif
+#endif // BOOST_DETAIL_NO_CONTAINER_FWD &&
+       // !defined(BOOST_DETAIL_TEST_FORCE_CONTAINER_FWD)
+
+#endif // BOOST_DETAIL_TEST_CONFIG_ONLY
 
 #endif
diff --git a/test/Jamfile b/test/Jamfile
index 9413621..59c0a8d 100644
--- a/test/Jamfile
+++ b/test/Jamfile
@@ -5,6 +5,8 @@
 #   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 ################################################################################
 
+build-project container_fwd ;
+
 project detail/test 
   : requirements
     <toolset>clang:<cxxflags>-Wno-unused
diff --git a/test/container_fwd/Jamfile b/test/container_fwd/Jamfile
new file mode 100644
index 0000000..b39d447
--- /dev/null
+++ b/test/container_fwd/Jamfile
@@ -0,0 +1,28 @@
+
+# Copyright 2011 Daniel James.
+# 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)
+
+import testing ;
+
+project detail/test/container_fwd
+  : requirements
+        <warnings>all
+        <toolset>intel:<warnings>on
+        <toolset>gcc:<cxxflags>"-pedantic -Wstrict-aliasing -fstrict-aliasing -Wextra -Wsign-promo -Wunused-parameter -Wconversion"
+        <toolset>darwin:<cxxflags>"-pedantic -Wstrict-aliasing -fstrict-aliasing -Wextra -Wsign-promo -Wunused-parameter -Wconversion"
+        <warnings-as-errors>on
+  ;
+
+run container_no_fwd_test.cpp ;
+run container_fwd_test.cpp : : : : container_fwd ;
+run container_fwd_test.cpp : :
+    : <define>_STLP_DEBUG <define>_GLIBCXX_DEBUG
+    : container_fwd_debug ;
+
+compile-fail correctly_disable_fail.cpp
+    : <warnings-as-errors>off
+    : correctly_disable ;
+compile-fail correctly_disable_fail.cpp
+    : <warnings-as-errors>off <define>_STLP_DEBUG <define>_GLIBCXX_DEBUG
+    : correctly_disable_debug ;
diff --git a/test/container_fwd_test.cpp b/test/container_fwd/container_fwd_test.cpp
similarity index 100%
rename from test/container_fwd_test.cpp
rename to test/container_fwd/container_fwd_test.cpp
diff --git a/test/container_no_fwd_test.cpp b/test/container_fwd/container_no_fwd_test.cpp
similarity index 100%
rename from test/container_no_fwd_test.cpp
rename to test/container_fwd/container_no_fwd_test.cpp
diff --git a/test/container_fwd/correctly_disable_fail.cpp b/test/container_fwd/correctly_disable_fail.cpp
new file mode 100644
index 0000000..2301686
--- /dev/null
+++ b/test/container_fwd/correctly_disable_fail.cpp
@@ -0,0 +1,43 @@
+
+// Copyright 2011 Daniel James.
+// 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)
+
+// This tests if container forwarding is correctly disabled. If it isn't
+// disabled it causes a compile error (which causes the test to pass).
+// If it is disabled it tries container forwarding. If it doesn't work
+// then there will be a compile error, indicating that it is correctly
+// disabled. But if there isn't a compile error that indicates that
+// container forwarding might work.
+//
+// Since this test only tries std::vector, it might get it wrong but I didn't
+// want it to fail because of some incompatibility with a trickier class.
+
+#define BOOST_DETAIL_TEST_CONFIG_ONLY
+#include <boost/detail/container_fwd.hpp>
+
+#if !defined(BOOST_DETAIL_NO_CONTAINER_FWD)
+#error "Failing in order to pass test"
+#else
+#define BOOST_DETAIL_TEST_FORCE_CONTAINER_FWD
+
+#undef BOOST_DETAIL_CONTAINER_FWD_HPP
+#undef BOOST_DETAIL_TEST_CONFIG_ONLY
+
+#include <boost/detail/container_fwd.hpp>
+
+template <class T, class Allocator>
+void test(std::vector<T, Allocator> const&)
+{
+}
+
+#include <vector>
+
+int main ()
+{
+    std::vector<int> x;
+    test(x);
+}
+
+#endif
+