Your message dated Wed, 22 Jun 2011 15:44:32 +0200
with message-id <[email protected]>
and subject line Already fixed
has caused the Debian Bug report #552110,
regarding tzdata: 2009o breaks DST in Bangladesh
to be marked as done.
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552110: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=552110
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Contact [email protected] with problems
--- Begin Message ---
Package: tzdata
Severity: important
Version: 2009o-1
Tags: patch
User: [email protected]
Usertags: origin-ubuntu ubuntu-patch karmic
Hello,
In https://launchpad.net/bugs/456322 it was reported that 2009o breaks
DST in Bangladesh:
$ zdump -v -c 2007,2015 Asia/Dhaka
Asia/Dhaka Fri Jun 19 16:59:59 2009 UTC = Fri Jun 19 22:59:59 2009 BDT isdst=0
gmtoff=21600
Asia/Dhaka Fri Jun 19 17:00:00 2009 UTC = Fri Jun 19 23:00:00 2009 BDST isdst=0
gmtoff=21600
So DST is not considered at all, and clocks are off by an hour:
$ LANG= date -u; LANG= TZ=Asia/Dhaka date
Fri Oct 23 12:30:57 UTC 2009
Fri Oct 23 18:30:57 BDST 2009
This is due to our glibc not understanding open end dates on DST
rules. This already happened when Bangladesh DST was introduced the
first time (https://launchpad.net/bugs/383444) and back then it was
discussed with upstream, who proposed to patch it to set an arbitrary
end date.
I did that for Ubuntu now by setting an arbitrary end date to Jan 1 2100
so that it works now:
$ zdump -v -c 2007,2101 Asia/Dhaka
Asia/Dhaka Fri Jun 19 16:59:59 2009 UTC = Fri Jun 19 22:59:59 2009 BDT isdst=0
gmtoff=21600
Asia/Dhaka Fri Jun 19 17:00:00 2009 UTC = Sat Jun 20 00:00:00 2009 BDST
isdst=1 gmtoff=25200
Asia/Dhaka Thu Dec 31 16:59:59 2099 UTC = Thu Dec 31 23:59:59 2099 BDST
isdst=1 gmtoff=25200
Asia/Dhaka Thu Dec 31 17:00:00 2099 UTC = Thu Dec 31 23:00:00 2099 BDT isdst=0
gmtoff=21600
$ LANG= date -u; LANG= TZ=Asia/Dhaka date
Fri Oct 23 12:32:53 UTC 2009
Fri Oct 23 19:32:53 BDST 2009
Thanks for considering,
Martin
--
Martin Pitt | http://www.piware.de
Ubuntu Developer (www.ubuntu.com) | Debian Developer (www.debian.org)
diff -u tzdata-2009o/debian/changelog tzdata-2009o/debian/changelog
--- tzdata-2009o/debian/changelog
+++ tzdata-2009o/debian/changelog
@@ -1,3 +1,11 @@
+tzdata (2009o-1ubuntu1) karmic; urgency=low
+
+ * Add bdst-workaround.diff: Work around glibc not being able to cope with
+ open end dates by specifying an arbitrary one far in the future. This
+ fixes time Bangladesh, which has eternal DST now. (LP: #456322)
+
+ -- Martin Pitt <[email protected]> Fri, 23 Oct 2009 14:00:01 +0200
+
tzdata (2009o-1) unstable; urgency=low
* New upstream release.
diff -u tzdata-2009o/debian/patches/series tzdata-2009o/debian/patches/series
--- tzdata-2009o/debian/patches/series
+++ tzdata-2009o/debian/patches/series
@@ -2,2 +2,3 @@
java.diff -p1
+bdst-workaround.diff
argentinas-dst-2009.diff -p1
only in patch2:
unchanged:
--- tzdata-2009o.orig/debian/patches/bdst-workaround.diff
+++ tzdata-2009o/debian/patches/bdst-workaround.diff
@@ -0,0 +1,16 @@
+# Description: Work around glibc not being able to cope with open end dates by
specifying an arbitrary one far in the future.
+# Ubuntu: https://launchpad.net/bugs/456322, https://launchpad.net/bugs/383444
+Index: tzdata-2009o/asia
+===================================================================
+--- tzdata-2009o.orig/asia 2009-10-14 22:49:38.000000000 +0200
++++ tzdata-2009o/asia 2009-10-23 14:12:07.000000000 +0200
+@@ -205,7 +205,8 @@
+ 6:30 - BURT 1951 Sep 30
+ 6:00 - DACT 1971 Mar 26 # Dacca Time
+ 6:00 - BDT 2009 Jun 19 23:00 # Bangladesh
Time
+- 6:00 1:00 BDST
++ 6:00 1:00 BDST 2100 Jan 1 # arbitrary end
date; unspecified end date does not work with glibc
++ 6:00 - BDT
+
+ # Bhutan
+ # Zone NAME GMTOFF RULES FORMAT [UNTIL]
signature.asc
Description: Digital signature
--- End Message ---
--- Begin Message ---
Version: 2009u-1
Given the problematic patch has been dropped, this bug must be fixed with
the new upstream release where the patch has been dropped.
--
Raphaël Hertzog ◈ Debian Developer
Follow my Debian News ▶ http://RaphaelHertzog.com (English)
▶ http://RaphaelHertzog.fr (Français)
--- End Message ---
