dbm_nextkey
key = dbm_nextkey(d->db);
#define dbm_nextkey dbm_rename(dbm_nextkey)
ROKEN_LIB_FUNCTION datum ROKEN_LIB_CALL dbm_nextkey (DBM*);
datum dbm_nextkey __P((DBM *));
datum dbm_nextkey(DBM *);
key = dbm_nextkey(db);
key = dbm_nextkey(db);