Andrew Dunstan <andrew@dunslane.net> writes:
> Building 8.4 on a client's system, I get a regression failure apparently
> due to some difference between the system's timezone DB and what out
> regression tests expect, as shown below.
Those regression tests were *intentionally* set up to fail if someone's
TZ support is not Y2038 clean. This is not a bug. Advise your client
to get some less-obsolete timezone data files; or don't depend on the
system TZ database. (The only reason why you should do so is if it's
being kept up to date, eh?)
regards, tom lane