# include <boost/preprocessor/iteration/detail/bounds/lower4.hpp>
# define BOOST_PP_VALUE BOOST_PP_TUPLE_ELEM(2, 1, BOOST_PP_ITERATION_LIMITS)
# include <boost/preprocessor/iteration/detail/bounds/upper4.hpp>
-# define BOOST_PP_ITERATION_FLAGS_4 0
+# define BOOST_PP_ITERATION_FLAGS_4() 0
# undef BOOST_PP_ITERATION_LIMITS
# elif defined(BOOST_PP_ITERATION_PARAMS_4)
# define BOOST_PP_VALUE BOOST_PP_ARRAY_ELEM(0, BOOST_PP_ITERATION_PARAMS_4)
# include <boost/preprocessor/iteration/detail/bounds/upper4.hpp>
# define BOOST_PP_FILENAME_4 BOOST_PP_ARRAY_ELEM(2, BOOST_PP_ITERATION_PARAMS_4)
# if BOOST_PP_ARRAY_SIZE(BOOST_PP_ITERATION_PARAMS_4) >= 4
-# define BOOST_PP_ITERATION_FLAGS_4 BOOST_PP_ARRAY_ELEM(3, BOOST_PP_ITERATION_PARAMS_4)
+# define BOOST_PP_ITERATION_FLAGS_4() BOOST_PP_ARRAY_ELEM(3, BOOST_PP_ITERATION_PARAMS_4)
# else
-# define BOOST_PP_ITERATION_FLAGS_4 0
+# define BOOST_PP_ITERATION_FLAGS_4() 0
# endif
# else
# error BOOST_PP_ERROR: depth #4 iteration boundaries or filename not defined