diff -dur programs/boost_1_43_0/boost/preprocessor/detail/auto_rec.hpp workspace/booster/boost/preprocessor/detail/auto_rec.hpp
--- programs/boost_1_43_0/boost/preprocessor/detail/auto_rec.hpp	2004-08-01 09:24:26.000000000 +0200
+++ workspace/booster/boost/preprocessor/detail/auto_rec.hpp	2010-08-08 14:43:31.462052734 +0200
@@ -22,6 +22,9 @@
 #
 # /* BOOST_PP_AUTO_REC */
 #
+# define BOOST_PP_AUTO_REC_BASE_0(pred, n) BOOST_PP_IIF(pred(0), BOOST_PP_NODE_0, BOOST_AUTO_REC)(pred, n)
+# define BOOST_PP_NODE_0(pred, n) 0
+#
 # define BOOST_PP_AUTO_REC(pred, n) BOOST_PP_NODE_ENTRY_ ## n(pred)
 #
 # define BOOST_PP_NODE_ENTRY_256(p) BOOST_PP_NODE_128(p)(p)(p)(p)(p)(p)(p)(p)
diff -dur programs/boost_1_43_0/boost/preprocessor/detail/dmc/auto_rec.hpp workspace/booster/boost/preprocessor/detail/dmc/auto_rec.hpp
--- programs/boost_1_43_0/boost/preprocessor/detail/dmc/auto_rec.hpp	2004-08-01 09:24:26.000000000 +0200
+++ workspace/booster/boost/preprocessor/detail/dmc/auto_rec.hpp	2010-08-08 14:43:51.312046660 +0200
@@ -16,6 +16,9 @@
 #
 # /* BOOST_PP_AUTO_REC */
 #
+# define BOOST_PP_AUTO_REC_BASE_0(pred, n) BOOST_PP_IIF(pred(0), BOOST_PP_NODE_0, BOOST_AUTO_REC)(pred, n)
+# define BOOST_PP_NODE_0(pred, n) 0
+#
 # define BOOST_PP_AUTO_REC(pred, n) BOOST_PP_NODE_ENTRY_ ## n(pred)
 #
 # define BOOST_PP_NODE_ENTRY_256(p) BOOST_PP_NODE_128(p)(p)(p)(p)(p)(p)(p)(p)