Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hbsnG-0001x0-Fz for pgsql-hackers@arkaria.postgresql.org; Fri, 14 Jun 2019 20:27:26 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1hbsnF-0004DN-7j for pgsql-hackers@arkaria.postgresql.org; Fri, 14 Jun 2019 20:27:25 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hbsnE-0004DG-S6 for pgsql-hackers@lists.postgresql.org; Fri, 14 Jun 2019 20:27:25 +0000 Received: from lungold.riddles.org.uk ([82.68.208.19]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1hbsnB-0008TK-Vw for pgsql-hackers@postgresql.org; Fri, 14 Jun 2019 20:27:23 +0000 Received: from [192.168.127.1] (port=10650 helo=caithnard.riddles.org.uk) by lungold.riddles.org.uk with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.88 (FreeBSD)) (envelope-from ) id 1hbsn9-0005VA-DN; Fri, 14 Jun 2019 20:27:19 +0000 Received: from [127.0.0.1] (port=46768 helo=caithnard.riddles.org.uk) by caithnard.riddles.org.uk with esmtp (Exim 4.89 (FreeBSD)) (envelope-from ) id 1hbsn8-000An7-K1; Fri, 14 Jun 2019 20:27:18 +0000 From: Andrew Gierth To: Tom Lane Cc: Christoph Berg , PostgreSQL Hackers Subject: Re: UCT (Re: pgsql: Update time zone data files to tzdata release 2019a.) In-Reply-To: <7114.1560539536@sss.pgh.pa.us> (Tom Lane's message of "Fri, 14 Jun 2019 15:12:16 -0400") Message-ID: <87a7ek3pmm.fsf@news-spur.riddles.org.uk> References: <20190604085735.GD24018@msg.df7cb.de> <65800.1559662051@sss.pgh.pa.us> <20190605084735.GC15829@msg.df7cb.de> <24452.1560285699@sss.pgh.pa.us> <20190614095546.GA15107@msg.df7cb.de> <26948.1560517875@sss.pgh.pa.us> <87ef3w3u8a.fsf@news-spur.riddles.org.uk> <7114.1560539536@sss.pgh.pa.us> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (berkeley-unix) Date: Fri, 14 Jun 2019 21:27:18 +0100 MIME-Version: 1.0 Content-Type: text/plain List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk >>>>> "Tom" == Tom Lane writes: >> This isn't good enough, because it still picks "UCT" on a system with no >> /etc/localtime and no TZ variable. Testing on HEAD as of 3da73d683 (on >> FreeBSD, but it'll be the same anywhere else): Tom> [ shrug... ] Too bad. I doubt that that's a common situation anyway. Literally every server I have set up is like this... >> We need to absolutely prefer UTC over UCT if both match. Tom> I don't see a reason why that's a hard requirement. Because the reverse is clearly insane. -- Andrew (irc:RhodiumToad)