# define BOOST_REGEX_HAS_OTHER_WCHAR_T
# ifdef BOOST_MSVC
# pragma warning(push)
-# pragma warning(disable : 4251 4231 4660)
+# pragma warning(disable : 4251 4231)
+# if BOOST_MSVC < 1600
+# pragma warning(disable : 4660)
+# endif
# endif
# if defined(_DLL) && defined(BOOST_MSVC) && (BOOST_MSVC < 1600)
# include <string>