Re: Damaged table "pg_access"

Jens Hartwig <jhartwig@debis.com> writes:
> when I try to access the system-table "pg_class", I get the following
> error:

> zeda=# select * from pg_class;
> NOTICE:  get_groname: group 1 not found
> pqReadData() -- backend closed the channel unexpectedly.

Evidently you had created a group with sysid 1, granted some permissions
on some table to that group, and then deleted the group.  Re-create the
group (CREATE GROUP foo WITH SYSID 1).

I thought the crash in this situation had been fixed long since, but
apparently not :-( ... it still fails in current sources.  I'll make
sure it's fixed for 7.1.
        regards, tom lane