Using current sources, the following sequence:
set DateStyle TO 'Postgres';
set TimeZone TO 'PST8PDT';
select '2001-09-22T18:19:20'::timestamp(2);
produces
timestamptz
------------------------------Sat Sep 22 11:19:20 2001 PDT
on my HPUX box, and evidently also on your machine because that's
what's in the timestamptz expected file. However, on a LinuxPPC
machine I get
timestamptz
------------------------------Sat Sep 22 18:19:20 2001 PDT
ie, the value after 'T' is interpreted as local time not GMT time.
Question 1: which behavior is correct per spec? I'd have expected
local time myself, but I'm not sure where this is specified.
Question 2: where to look for the reason for the difference in the
code? I'm a tad surprised that the HP box behaves more like
yours does than the LinuxPPC box ...
regards, tom lane
