ioerr 285 ext/sdbm/_sdbm.c return ioerr(db), nullitem; ioerr 304 ext/sdbm/_sdbm.c return ioerr(db), -1; ioerr 309 ext/sdbm/_sdbm.c return ioerr(db), -1; ioerr 346 ext/sdbm/_sdbm.c return ioerr(db), -1; ioerr 355 ext/sdbm/_sdbm.c return ioerr(db), -1; ioerr 362 ext/sdbm/_sdbm.c return ioerr(db), -1; ioerr 478 ext/sdbm/_sdbm.c return ioerr(db), nullitem; ioerr 621 ext/sdbm/_sdbm.c return ioerr(db), nullitem;