PostgreSQL 7.0.2 Date Miscalculation

Jay Guerette (JayGuerette@pobox.com) reports a bug with a severity of 2
The lower the number the more severe it is.

Short Description
PostgreSQL 7.0.2 Date Miscalculation

Long Description
PostgreSQL 7.0.2

The RELTIME function is miscalculating dates.
(all my graphs were wrong today!)

Sample Code
The query:

SELECT STAMP FROM SYSLOG WHERE DATE(STAMP)=DATE(TIMESTAMP('TODAY'-'1 WEEK'::RELTIME)) LIMIT 1;

Produces:

         stamp
------------------------
 2001-03-25 02:53:52-05
(1 row)

When the date is:

Mon Apr  2 19:45:40 EDT 2001

And the result SHOULD be:

         stamp
------------------------
 2001-03-26 02:53:52-05

I also have NO idea what this means:

SELECT DATE(CURRENT_DATE - ('1 WEEK'::RELTIME));
    date
------------
 0345-05-14
(1 row)


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