Index: has_new_operator.hpp
===================================================================
--- has_new_operator.hpp	(revision 2)
+++ has_new_operator.hpp	(working copy)
@@ -147,6 +147,7 @@
 
 #if defined(BOOST_TT_AUX_MACRO_NEW_DEFINED)
 #  pragma pop_macro("new")
+#  undef BOOST_TT_AUX_MACRO_NEW_DEFINED
 #endif
 
 #include <boost/type_traits/detail/bool_trait_undef.hpp>