-gras_dd_alloc_ref(xbt_dict_t refs, long int size,
- char **r_ref, long int r_len,
- char **l_ref, int detect_cycle);
-
-static _XBT_INLINE int
-gras_dd_is_r_null(char **r_ptr, long int length);
-
-static _XBT_INLINE void
-gras_dd_send_int(gras_socket_t sock,int i) {