Re: [HACKERS] Re: [BUGS] bug in postgresql-v6.4 on FreeBSD

Tatsuo Ishii wrote:
>
> >here is a bug which is reproducible on FreeBSD-2.2.6
> >as well as on FreeBSD-2.2.7:
> >
> >
> >nadia:mergl> echo -n "testing large objects using blob_read" >/tmp/gaga
> >nadia:mergl> createdb pgtest
> >nadia:mergl> psql pgtest
> >...
> >pgtest=> CREATE TABLE lobject ( id int4, loid oid );
> >CREATE
> >pgtest=> INSERT INTO lobject (id, loid) VALUES (1, lo_import('/tmp/gaga'));
> >pqReadData() -- backend closed the channel unexpectedly.
> > This probably means the backend terminated abnormally before or while processing the request.
> >We have lost the connection to the backend, so further processing is impossible. Terminating.
>
> Reproduced here too. Please try included patches...
>
> Tatsuo Ishii
> t-ishii(at)sra(dot)co(dot)jp
> ---------------------------------------------------------------------------
> *** postgresql-v6.4/src/backend/storage/large_object/inv_api.c~ Thu Nov 5 17:48:26 1998
> --- postgresql-v6.4/src/backend/storage/large_object/inv_api.c Thu Nov 12 15:52:59 1998
> ***************
> *** 549,556 ****
> tuplen = inv_wrnew(obj_desc, buf, nbytes - nwritten);
> else
> tuplen = inv_wrold(obj_desc, buf, nbytes - nwritten, tuple, buffer);
> }
> ! ReleaseBuffer(buffer);
>
> /* move pointers past the amount we just wrote */
> buf += tuplen;
> --- 549,557 ----
> tuplen = inv_wrnew(obj_desc, buf, nbytes - nwritten);
> else
> tuplen = inv_wrold(obj_desc, buf, nbytes - nwritten, tuple, buffer);
> + ReleaseBuffer(buffer);
> }
> !
>
> /* move pointers past the amount we just wrote */
> buf += tuplen;

yes, this patch works also for me.
It is needed to pass 'make test' for DBD-Pg-0.89.

thanks
Edmund
--
Edmund Mergl mailto:E(dot)Mergl(at)bawue(dot)de
Im Haldenhau 9 http://www.bawue.de/~mergl
70565 Stuttgart fon: +49 711 747503
Germany