Patchwork : update leapseconds

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Submitter Gianni Tedesco
Date March 17, 2018, 8:30 p.m.
Message ID <1521318621.12178.2.camel@scaramanga.co.uk>
Download mbox | patch
Permalink /patch/26352/
State New
Headers show

Comments

Gianni Tedesco - March 17, 2018, 8:30 p.m.
From 06b181c1370b368fc49ef3aede7e8ac7d47798c3 Mon Sep 17 00:00:00 2001
From: Gianni Tedesco <gianni@scaramanga.co.uk>
Date: Sun, 18 Mar 2018 05:21:56 +0900
Subject: [PATCH] Update leapseconds file per IERS Bulletein C 55

---
 timezone/leapseconds | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)
Paul Eggert - March 18, 2018, 11:59 p.m.
As I understand it, the leapseconds file (like most of the other files in the 
glibc timezone directory) is intended only for test data, and is not kept 
up-to-date. Perhaps this should be stated more clearly in the files' headers.

Another possibility would be to remove these files, as purposely out-of-date 
files cause confusion among glibc contributors.
Gianni Tedesco - March 19, 2018, 7:54 a.m.
On Sun, 2018-03-18 at 16:59 -0700, Paul Eggert wrote:
> As I understand it, the leapseconds file (like most of the other
> files in the 
> glibc timezone directory) is intended only for test data, and is not
> kept 
> up-to-date. Perhaps this should be stated more clearly in the files'
> headers.
> 
> Another possibility would be to remove these files, as purposely out-
> of-date 
> files cause confusion among glibc contributors.

Ah, I was under the impression they were used when converting in and
out of "right" timezones. But now I see that information is in the
tzinfo file itself.

My bad.

Gianni
Joseph Myers - March 19, 2018, 5 p.m.
On Sun, 18 Mar 2018, Paul Eggert wrote:

> As I understand it, the leapseconds file (like most of the other files in the
> glibc timezone directory) is intended only for test data, and is not kept
> up-to-date. Perhaps this should be stated more clearly in the files' headers.
> 
> Another possibility would be to remove these files, as purposely out-of-date
> files cause confusion among glibc contributors.

Maybe move them to e.g. timezone/test-sources?  (We already have 
timezone/testdata for *binary* timezone files used as test inputs to the 
timezone code, so it's probably a good idea to keep the different kinds of 
test inputs separate.)
Gianni Tedesco - March 19, 2018, 6:03 p.m.
On Mon, 2018-03-19 at 17:00 +0000, Joseph Myers wrote:
> On Sun, 18 Mar 2018, Paul Eggert wrote:
> 
> > As I understand it, the leapseconds file (like most of the other
> > files in the
> > glibc timezone directory) is intended only for test data, and is
> > not kept
> > up-to-date. Perhaps this should be stated more clearly in the
> > files' headers.
> > 
> > Another possibility would be to remove these files, as purposely
> > out-of-date
> > files cause confusion among glibc contributors.
> 
> Maybe move them to e.g. timezone/test-sources?  (We already have 
> timezone/testdata for *binary* timezone files used as test inputs to
> the 
> timezone code, so it's probably a good idea to keep the different
> kinds of 
> test inputs separate.)

Yeah, well, it's also getting shipped as part of the binary
distribution, at least on ubuntu, so if it's just test data then that's
weird...

Gianni
Joseph Myers - March 19, 2018, 6:08 p.m.
On Tue, 20 Mar 2018, Gianni Tedesco wrote:

> Yeah, well, it's also getting shipped as part of the binary
> distribution, at least on ubuntu, so if it's just test data then that's
> weird...

Distributions should be building from the separate tzdata package, not 
from glibc sources, which haven't installed the binary timezone data for 
several years.

Patch

diff --git a/timezone/leapseconds b/timezone/leapseconds
index d6343c0209..8b7b37a8b3 100644
--- a/timezone/leapseconds
+++ b/timezone/leapseconds
@@ -48,6 +48,9 @@  Leap	1997	Jun	30	23:59:60	+	S
 Leap	1998	Dec	31	23:59:60	+	S
 Leap	2005	Dec	31	23:59:60	+	S
 Leap	2008	Dec	31	23:59:60	+	S
+Leap	2012	Jun	30	23:59:60	+	S
+Leap	2015	Jun	30	23:59:60	+	S
+Leap	2016	Dec	31	23:59:60	+	S
 
 # INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
 #
@@ -56,13 +59,13 @@  Leap	2008	Dec	31	23:59:60	+	S
 # SERVICE DE LA ROTATION TERRESTRE
 # OBSERVATOIRE DE PARIS
 # 61, Av. de l'Observatoire 75014 PARIS (France)
-# Tel.      : 33 (0) 1 40 51 22 29
-# FAX       : 33 (0) 1 40 51 22 91
-# Internet  : services.iers@obspm.fr
+# Tel.      : 33 (0) 1 40 51 23 35
+# e-mail    : services.iers@obspm.fr
+# http://hpiers.obspm.fr/eop-pc
 #
-# Paris, 15 January 2009
+# Paris, 09 January 2018
 #
-# Bulletin C 37
+# Bulletin C 55
 #
 # To authorities responsible
 # for the measurement and
@@ -70,18 +73,18 @@  Leap	2008	Dec	31	23:59:60	+	S
 #
 # INFORMATION ON UTC - TAI
 #
-# NO positive leap second will be introduced at the end of June 2009.
+# NO leap second will be introduced at the end of June 2018.
 # The difference between Coordinated Universal Time UTC and the
 # International Atomic Time TAI is :		
 #
-# from 2009 January 1, 0h UTC, until further notice : UTC-TAI = -34 s
+# from 2017 January 1, 0h UTC, until further notice : UTC-TAI = -37 s
 #
 # Leap seconds can be introduced in UTC at the end of the months of December
 # or June,  depending on the evolution of UT1-TAI. Bulletin C is mailed every
 # six months, either to announce a time step in UTC, or to confirm that there
 # will be no time step at the next possible date.
 #
-# Daniel GAMBIS
-# Head			
+# Christian BIZOUARD
+# Director
 # Earth Orientation Center of the IERS
 # Observatoire de Paris, France