I just tested this on 7.4-snapshot-2003-03-24 and the same error occurred.
The one regression test (opr_sanity) in 7.4-snapshot that failed also had
this error.
ERROR: datumGetSize: Invalid typLen 0
> System: NetBSD / Alpha 1.6 (64 bit)
> Postgresql 7.3.2
>
> Bug: after vacuum analyze, I'm unable to do a simple select. Instead I'm
> getting this error:
>
> ERROR: datumGetSize: Invalid typLen 0
>
> Many thanks to Teodor Sigaev for helping verify this bug. The following
> test suite came from Teodor:
>
> Reproduce bug:
> initdb and start postmaster
> %createdb foo
> %psql foo < bug.sql
> CREATE TABLE
> INSERT 16996 1
> INSERT 16997 1
> CREATE TABLE
> INSERT 17003 1
> ts_name | ts_name
> ---------+---------
> default | default
> default | default
> (2 rows)
>
> VACUUM
> ERROR: datumGetSize: Invalid typLen 0
>
>
> bug.sql is very simple:
> ------------------------------------------------
> CREATE TABLE pg_ts_cfgmap (
> ts_name text
> );
>
> insert into pg_ts_cfgmap values ('default');
> insert into pg_ts_cfgmap values ('default');
>
>
> CREATE TABLE pg_ts_cfg (
> ts_name text
> );
>
> insert into pg_ts_cfg values ('default');
>
> select
> *
> from
> pg_ts_cfgmap,
> pg_ts_cfg
> where
> pg_ts_cfgmap.ts_name = pg_ts_cfg.ts_name;
>
>
> vacuum analyze pg_ts_cfgmap;
>
> select
> *
> from
> pg_ts_cfgmap,
> pg_ts_cfg
> where
> pg_ts_cfgmap.ts_name = pg_ts_cfg.ts_name;
>
> ---------------------------------------------------
>
> Thomas
>
>
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