BUG #3295: pg_get_serial_sequence returns wrong sequence name for a serial column

The following bug has been logged online:

Bug reference: 3295
Logged by: Philip Ives
Email address: phil(at)ivesdigital(dot)com
PostgreSQL version: 8.1.4
Operating system: Darwin and FreeBSD 4
Description: pg_get_serial_sequence returns wrong sequence name for a
serial column
Details:

pg_get_serial_sequence doesn't return the correct sequence name and returns
a null. This function either shouldn't exist or it should always return the
right name.

: Table "public.ccprocesses"
Column | Type |
Modifiers
---------------------+-----------------------------+------------------------
------------------------------------------
id | bigint | not null default
nextval(('seq_ccprocesses_id'::text)::regclass)

select * from pg_get_serial_sequence('ccprocesses','id');
pg_get_serial_sequence
------------------------

(1 row)