[tz] [tz-announce] tzcode2013e and tzdata2013e available

Cyril Baurand cbaurand at gmail.com
Tue Sep 24 15:14:58 UTC 2013


The execution of following command  "awk -f leapseconds.awk
leap-seconds.list" lead to a core dump due to the printf %s of the comment
lines (> 1024 characters). (Linux-Ubuntu 12.04 LTS, 32bits)


2013/9/20 Paul Eggert <eggert at cs.ucla.edu>

> The 2013e release of the tz code and data is available.  It reflects
> the following changes circulated on the tz mailing list:
>   Changes affecting near-future time stamps
>     This year Fiji will start DST on October 27, not October 20.
>     (Thanks to David Wheeler for the heads-up.)  For now, guess that
>     Fiji will continue to spring forward the Sunday before the fourth
>     Monday in October.
>   Changes affecting current and future time zone abbreviations
>     Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian
>     time zone abbreviations since 1932.  (Thanks to George Ziegler,
>     Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and
>     Benny Lin.)  This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura,
>     Asia/Makassar, and Asia/Pontianak.
>     Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but
>     daylight saving time) for San Luis, Argentina since 2009.
>   Changes affecting Godthab time stamps after 2037 if version mismatch
>     Allow POSIX-like TZ strings where the transition time's hour can
>     range from -167 through 167, instead of the POSIX-required 0
>     through 24.  E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the
>     new Fiji rules.  This is a more-compact way to represent
>     far-future time stamps for America/Godthab, America/Santiago,
>     Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem,
>     Pacific/Easter, and Pacific/Fiji.  Other zones are unaffected by
>     this change.  (Derived from a suggestion by Arthur David Olson.)
>     Allow POSIX-like TZ strings where daylight saving time is in
>     effect all year.  E.g., TZ='WART4WARST,J1/0,J365/25' for Western
>     Argentina Summer Time all year.  This supports a more-compact way
>     to represent the 2013d data for America/Argentina/San_Luis.
>     Because of the change for San Luis noted above this change does not
>     affect the current data.  (Thanks to Andrew Main (Zefram) for
>     suggestions that improved this change.)
>     Where these two TZ changes take effect, there is a minor extension
>     to the tz file format in that it allows new values for the
>     embedded TZ-format string, and the tz file format version number
>     has therefore been increased from 2 to 3 as a precaution.
>     Version-2-based client code should continue to work as before for
>     all time stamps before 2038.  Existing version-2-based client code
>     (tzcode, GNU/Linux, Solaris) has been tested on version-3-format
>     files, and typically works in practice even for time stamps after
>     2037; the only known exception is America/Godthab.
>   Changes affecting time stamps before 1970
>     Pacific/Johnston is now a link to Pacific/Honolulu.  This corrects
>     some errors before 1947.
>     Some zones have been turned into links, when they differ from
>     existing zones only in older data that was likely invented or that
>     differs only in LMT or transition from LMT.  These changes affect
>     only time stamps before 1943.  The affected zones are:
>     Africa/Juba, America/Anguilla, America/Aruba, America/Dominica,
>     America/Grenada, America/Guadeloupe, America/Marigot,
>     America/Montserrat, America/St_Barthelemy, America/St_Kitts,
>     America/St_Lucia, America/St_Thomas, America/St_Vincent,
>     America/Tortola, and Europe/Vaduz.  (Thanks to Alois Treindl for
>     confirming that the old Europe/Vaduz zone was wrong and the new
>     link is better for WWII-era times.)
>     Change Kingston Mean Time from -5:07:12 to -5:07:11.  This affects
>     America/Cayman, America/Jamaica and America/Grand_Turk time stamps
>     from 1890 to 1912.
>     Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46.
>     This affects Europe/Zurich time stamps from 1853 to 1894.  (Thanks
>     to Alois Treindl).
>     Change the date of the circa-1850 Zurich transition from 1849-09-12
>     to 1853-07-16, overriding Shanks with data from Messerli about
>     postal and telegraph time in Switzerland.
>   Changes affecting time zone abbreviations before 1970
>     For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932,
>     as Jakarta was called Batavia back then.
>   Changes affecting API
>     The 'zic' command now outputs a dummy transition when far-future
>     data can't be summarized using a TZ string, and uses a 402-year
>     window rather than a 400-year window.  For the current data, this
>     affects only the Asia/Tehran file.  It does not affect any of the
>     time stamps that this file represents, so zdump outputs the same
>     information as before.  (Thanks to Andrew Main (Zefram).)
>     The 'date' command has a new '-r' option, which lets you specify
>     the integer time to display, a la FreeBSD.
>     The 'tzselect' command has two new options '-c' and '-n', which lets
> you
>     select a zone based on latitude and longitude.
>     The 'zic' command's '-v' option now warns about constructs that
>     require the new version-3 binary file format.  (Thanks to Arthur
>     David Olson for the suggestion.)
>     Support for floating-point time_t has been removed.
>     It was always dicey, and POSIX no longer requires it.
>     (Thanks to Eric Blake for suggesting to the POSIX committee to
>     remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy
>     Heninger, Arthur David Olson, and Alois Treindl, for reporting
>     bugs and elucidating some of the corners of the old floating-point
>     implementation.)
>     The signatures of 'offtime', 'timeoff', and 'gtime' have been
>     changed back to the old practice of using 'long' to represent UT
>     offsets.  This had been inadvertently and mistakenly changed to
>     'int_fast32_t'.  (Thanks to Christos Zoulos.)
>     The code avoids undefined behavior on integer overflow in some
>     more places, including gmtime, localtime, mktime and zdump.
>   Changes affecting the zdump utility
>     zdump now outputs "UT" when referring to Universal Time, not "UTC".
>     "UTC" does not make sense for time stamps that predate the introduction
>     of UTC, whereas "UT", a more-generic term, does.  (Thanks to Steve
> Allen
>     for clarifying UT vs UTC.)
>   Data changes affecting behavior of tzselect and similar programs
>     Country code BQ is now called the more-common name "Caribbean
> Netherlands"
>     rather than the more-official "Bonaire, St Eustatius & Saba".
>     Remove from zone.tab the names America/Montreal, America/Shiprock,
>     and Antarctica/South_Pole, as they are equivalent to existing
>     same-country-code zones for post-1970 time stamps.  The data for
>     these names are unchanged, so the names continue to work as before.
>   Changes affecting code internals
>     zic -c now runs way faster on 64-bit hosts when given large numbers.
>     zic now uses vfprintf to avoid allocating and freeing some memory.
>     tzselect now computes the list of continents from the data,
>     rather than have it hard-coded.
>     Minor changes pacify GCC 4.7.3 and GCC 4.8.1.
>   Changes affecting the build procedure
>     The 'leapseconds' file is now generated automatically from a
>     new file 'leap-seconds.list', which is a copy of
>     <ftp://time.nist.gov/pub/leap-seconds.list>.
>     A new source file 'leapseconds.awk' implements this.
>     The goal is simplification of the future maintenance of 'leapseconds'.
>     When building the 'posix' or 'right' subdirectories, if the
>     subdirectory would be a copy of the default subdirectory, it is
>     now made a symbolic link if that is supported.  This saves about
>     2 MB of file system space.
>     The links America/Shiprock and Antarctica/South_Pole have been
>     moved to the 'backward' file.  This affects only nondefault builds
>     that omit 'backward'.
>   Changes affecting version-control only
>     .gitignore now ignores 'date'.
>   Changes affecting documentation and commentary
>     Changes to the 'tzfile' man page
>       It now mentions that the binary file format may be extended in
>       future versions by appending data.
>       It now refers to the 'zdump' and 'zic' man pages.
>     Changes to the 'zic' man page
>       It lists conditions that elicit a warning with '-v'.
>       It says that the behavior is unspecified when duplicate names
>       are given, or if the source of one link is the target of another.
>       Its examples are updated to match the latest data.
>       The definition of white space has been clarified slightly.
>       (Thanks to Michael Deckers.)
>     Changes to the 'Theory' file
>       There is a new section about the accuracy of the tz database,
>       describing the many ways that errors can creep in, and
>       explaining why so many of the pre-1970 time stamps are wrong or
>       misleading (thanks to Steve Allen, Lester Caine, and Garrett
>       Wollman for discussions that contributed to this).
>       The 'Theory' file describes LMT better (this follows a
>       suggestion by Guy Harris).
>       It refers to the 2013 edition of POSIX rather than the 2004 edition.
>       It's mentioned that excluding 'backward' should not affect the
>       other data, and it suggests at least one zone.tab name per
>       inhabited country (thanks to Stephen Colebourne).
>       Some longstanding restrictions on names are documented, e.g.,
>       'America/New_York' precludes 'America/New_York/Bronx'.
>       It gives more reasons for the 1970 cutoff.
>       It now mentions which time_t variants are supported, such as
>       signed integer time_t.  (Thanks to Paul Goyette for reporting
>       typos in an experimental version of this change.)
>       (Thanks to Philip Newton for correcting typos in these changes.)
>     Documentation and commentary is more careful to distinguish UT in
>     general from UTC in particular.  (Thanks to Steve Allen.)
>     Add a better source for the Zurich 1894 transition.
>     (Thanks to Pierre-Yves Berger.)
>     Update shapefile citations in tz-link.htm.  (Thanks to Guy Harris.)
> Here are links to the release files:
>   ftp://ftp.iana.org/tz/releases/tzcode2013e.tar.gz
>   ftp://ftp.iana.org/tz/releases/tzdata2013e.tar.gz
> The files are also available via HTTP as follows:
>   http://www.iana.org/time-zones/repository/releases/tzcode2013e.tar.gz
>   http://www.iana.org/time-zones/repository/releases/tzdata2013e.tar.gz
> Each release file has a GPG signature, which can be retrieved by
> appending ".asc" to the above URLs.  Copies of these signatures are
> appended to this message.
> As usual, links to the latest release files are here:
>   http://www.iana.org/time-zones/repository/tzcode-latest.tar.gz
>   http://www.iana.org/time-zones/repository/tzdata-latest.tar.gz
>   ftp://ftp.iana.org/tz/tzcode-latest.tar.gz
>   ftp://ftp.iana.org/tz/tzdata-latest.tar.gz
> This release corresponds to commit
> db6270a00d1a364865f3080ac41d8d6d42f5c833
> dated Thu Sep 19 23:50:04 2013 -0700
> in the unofficial github repository at <https://github.com/eggert/tz>.
> Here are the GPG checksums for the release files:
> Version: GnuPG v1.4.12 (GNU/Linux)
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> =kyxK
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