[tz] [tz-announce] tzcode2013e and tzdata2013e available
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
> 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
> 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
> 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
> 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
> 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:
> The files are also available via HTTP as follows:
> 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:
> This release corresponds to commit
> 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:
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> tz-announce mailing list
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