DBM_IOERR         124 ext/sdbm/_sdbm.c #define ioerr(db)	((db)->flags |= DBM_IOERR)
DBM_IOERR          41 ext/sdbm/sdbm.h #define sdbm_error(db)		((db)->flags & DBM_IOERR)
DBM_IOERR          43 ext/sdbm/sdbm.h #define sdbm_clearerr(db)	((db)->flags &= ~DBM_IOERR)  /* ouch */