-cu_tail_match_t **tail_match_list = NULL;
-size_t tail_match_list_num = 0;
-cdtime_t tail_match_list_intervals[255];
+static cu_tail_match_t **tail_match_list = NULL;
+static size_t tail_match_list_num = 0;
+static cdtime_t tail_match_list_intervals[255];