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CVS log for src/lib/libc/time/zdump.8

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Current tag: MAIN


Revision 1.20 / (download) - annotate - [select for diffs], Mon May 25 14:52:48 2020 UTC (6 months ago) by christos
Branch: MAIN
CVS Tags: HEAD
Changes since 1.19: +7 -7 lines
Diff to previous 1.19 (colored)

Bring in 2020a

Revision 1.19 / (download) - annotate - [select for diffs], Sat Oct 27 22:29:24 2018 UTC (2 years, 1 month ago) by christos
Branch: MAIN
CVS Tags: phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, netbsd-9-base, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, is-mlppp-base, is-mlppp
Changes since 1.18: +11 -10 lines
Diff to previous 1.18 (colored)

Welcome tzcode-2018g

  Changes to code

    When generating TZif files with leap seconds, zic no longer uses a
    format that trips up older 32-bit clients, fixing a bug introduced
    in 2018f.  (Reported by Daniel Fischer.)  Also, the zic workaround
    for QTBUG-53071 now also works for TZif files with leap seconds.

    The translator to rearguard format now rewrites the line
    "Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S" to
    "Rule Japan 1948 1951 - Sep Sun>=9  1:00 0 S".
    This caters to zic before 2007 and to Oracle TZUpdater 2.2.0
    and earlier.  (Reported by Christos Zoulas.)

  Changes to documentation

    tzfile.5 has new sections on interoperability issues.

Revision 1.18 / (download) - annotate - [select for diffs], Fri Oct 19 23:05:35 2018 UTC (2 years, 1 month ago) by christos
Branch: MAIN
CVS Tags: pgoyette-compat-1020
Changes since 1.17: +18 -19 lines
Diff to previous 1.17 (colored)

Update to 2018f:

  Changes to code

    zic now always generates TZif files where time type 0 is used for
    timestamps before the first transition.  This simplifies the
    reading of TZif files and should not affect behavior of existing
    TZif readers because the same set of time types is used; only
    their internal indexes may have changed.  This affects only the
    legacy zones EST5EDT, CST6CDT, MST7MDT, PST8PDT, CET, MET, and
    EET, which previously used nonzero types for these timestamps.

    Because of the type 0 change, zic no longer outputs a dummy
    transition at time -2**59 (before the Big Bang), as clients should
    no longer need this to handle historical timestamps correctly.
    This reverts a change introduced in 2013d and shrinks most TZif
    files by a few bytes.

    zic now supports negative time-of-day in Rule and Leap lines, e.g.,
    "Rule X min max - Apr lastSun -6:00 1:00 -" means the transition
    occurs at 18:00 on the Saturday before the last Sunday in April.
    This behavior was documented in 2018a but the code did not
    entirely match the documentation.

    localtime.c no longer requires at least one time type in TZif
    files that lack transitions or have a POSIX-style TZ string.  This
    future-proofs the code against possible future extensions to the
    format that would allow TZif files with POSIX-style TZ strings and
    without transitions or time types.

    A read-access subscript error in localtime.c has been fixed.
    It could occur only in TZif files with timecnt == 0, something that
    does not happen in practice now but could happen in future versions.

    localtime.c no longer ignores TZif POSIX-style TZ strings that
    specify only standard time.  Instead, these TZ strings now
    override the default time type for timestamps after the last
    transition (or for all time stamps if there are no transitions),
    just as DST strings specifying DST have always done.

    leapseconds.awk now outputs "#updated" and "#expires" comments,
    and supports leap seconds at the ends of months other than June
    and December.  (Inspired by suggestions from Chris Woodbury.)

  Changes to documentation

    New restrictions: A Rule name must start with a character that
    is neither an ASCII digit nor "-" nor "+", and an unquoted name
    should not use characters in the set "!$%&'()*,/:;<=>?@[\]^`{|}~".
    The latter restriction makes room for future extensions (a
    possibility noted by Tom Lane).

    tzfile.5 now documents what time types apply before the first and
    after the last transition, if any.

    Documentation now uses the spelling "timezone" for a TZ setting
    that determines timestamp history, and "time zone" for a
    geographic region currently sharing the same standard time.

    The name "TZif" is now used for the tz binary data format.

    tz-link.htm now mentions the A0 TimeZone Migration utilities.
    (Thanks to Aldrin Martoq for the link.)

Revision 1.17 / (download) - annotate - [select for diffs], Mon Jul 3 21:32:50 2017 UTC (3 years, 4 months ago) by wiz
Branch: MAIN
CVS Tags: phil-wifi-base, pgoyette-compat-base, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, perseant-stdc-iso10646-base, perseant-stdc-iso10646
Branch point for: phil-wifi, pgoyette-compat
Changes since 1.16: +2 -2 lines
Diff to previous 1.16 (colored)

Remove workaround for ancient HTML generation code.

Revision 1.16 / (download) - annotate - [select for diffs], Sat Mar 11 18:23:14 2017 UTC (3 years, 8 months ago) by christos
Branch: MAIN
CVS Tags: prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, pgoyette-localcount-20170426, pgoyette-localcount-20170320, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, matt-nb8-mediatek-base, matt-nb8-mediatek, bouyer-socketcan-base1
Changes since 1.15: +5 -4 lines
Diff to previous 1.15 (colored)

merge 2017a

Revision 1.15 / (download) - annotate - [select for diffs], Fri Oct 7 15:29:42 2016 UTC (4 years, 1 month ago) by christos
Branch: MAIN
CVS Tags: pgoyette-localcount-20170107, pgoyette-localcount-20161104, bouyer-socketcan-base
Branch point for: bouyer-socketcan
Changes since 1.14: +128 -14 lines
Diff to previous 1.14 (colored)

merge tzcode2016g

Revision 1.14 / (download) - annotate - [select for diffs], Thu Oct 23 18:45:58 2014 UTC (6 years, 1 month ago) by christos
Branch: MAIN
CVS Tags: pgoyette-localcount-base, pgoyette-localcount-20160806, pgoyette-localcount-20160726, localcount-20160914
Branch point for: pgoyette-localcount
Changes since 1.13: +3 -3 lines
Diff to previous 1.13 (colored)

merge 2014i

Revision 1.13 / (download) - annotate - [select for diffs], Tue Oct 7 21:51:03 2014 UTC (6 years, 1 month ago) by christos
Branch: MAIN
Changes since 1.12: +36 -16 lines
Diff to previous 1.12 (colored)

Sync with tzcode2014h

Revision 1.12 / (download) - annotate - [select for diffs], Fri Aug 15 11:04:07 2014 UTC (6 years, 3 months ago) by christos
Branch: MAIN
Changes since 1.11: +4 -3 lines
Diff to previous 1.11 (colored)

merge tzcode2014f via patch

Revision 1.11 / (download) - annotate - [select for diffs], Fri Sep 20 19:06:54 2013 UTC (7 years, 2 months ago) by christos
Branch: MAIN
CVS Tags: yamt-pagecache-base9, tls-maxphys-base, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, netbsd-7-base
Branch point for: netbsd-7
Changes since 1.10: +15 -9 lines
Diff to previous 1.10 (colored)

Welcome to tzcode 2013e:

  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 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.)

Revision 1.10 / (download) - annotate - [select for diffs], Wed Jul 17 20:13:04 2013 UTC (7 years, 4 months ago) by christos
Branch: MAIN
CVS Tags: riastradh-drm2-base2, riastradh-drm2-base1
Changes since 1.9: +20 -4 lines
Diff to previous 1.9 (colored)

welcome to 2013d

Revision 1.9 / (download) - annotate - [select for diffs], Thu Aug 9 12:38:26 2012 UTC (8 years, 3 months ago) by christos
Branch: MAIN
CVS Tags: yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, riastradh-drm2-base, agc-symver-base, agc-symver
Branch point for: tls-maxphys, riastradh-drm2
Changes since 1.8: +1 -2 lines
Diff to previous 1.8 (colored)

merge 2012e

Revision 1.8 / (download) - annotate - [select for diffs], Fri Jan 8 23:14:13 2010 UTC (10 years, 10 months ago) by joerg
Branch: MAIN
CVS Tags: yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, matt-mips64-premerge-20101231, cherry-xenmp-base, cherry-xenmp, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2
Branch point for: yamt-pagecache
Changes since 1.7: +4 -4 lines
Diff to previous 1.7 (colored)

Fix mdoc(7)/man(7) mix up.

Revision 1.7 / (download) - annotate - [select for diffs], Thu Dec 31 22:49:16 2009 UTC (10 years, 10 months ago) by mlelstv
Branch: MAIN
Changes since 1.6: +19 -4 lines
Diff to previous 1.6 (colored)

Import tzcode2009k.
- now understands 64bit time_t and 64bit data in timezone files.
- localtime(), gmtime(), asctime() and ctime() may now fail with
  a NULL result if time_t cannot be represented by struct tm.

Revision 1.6 / (download) - annotate - [select for diffs], Mon Mar 9 19:24:27 2009 UTC (11 years, 8 months ago) by joerg
Branch: MAIN
CVS Tags: matt-premerge-20091211, jym-xensuspend-nbase, jym-xensuspend-base
Changes since 1.5: +2 -2 lines
Diff to previous 1.5 (colored)

Fix preamble to match order set out by mdoc(7). Discussed with wiz.

Revision 1.5 / (download) - annotate - [select for diffs], Wed Oct 29 20:43:27 2003 UTC (17 years, 1 month ago) by kleink
Branch: MAIN
CVS Tags: yamt-pf42-baseX, yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-pf42, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, wrstuden-fixsa, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, netbsd-4, netbsd-3-base, netbsd-3-1-RELEASE, netbsd-3-1-RC4, netbsd-3-1-RC3, netbsd-3-1-RC2, netbsd-3-1-RC1, netbsd-3-1-1-RELEASE, netbsd-3-1, netbsd-3-0-RELEASE, netbsd-3-0-RC6, netbsd-3-0-RC5, netbsd-3-0-RC4, netbsd-3-0-RC3, netbsd-3-0-RC2, netbsd-3-0-RC1, netbsd-3-0-3-RELEASE, netbsd-3-0-2-RELEASE, netbsd-3-0-1-RELEASE, netbsd-3-0, netbsd-3, netbsd-2-base, netbsd-2-1-RELEASE, netbsd-2-1-RC6, netbsd-2-1-RC5, netbsd-2-1-RC4, netbsd-2-1-RC3, netbsd-2-1-RC2, netbsd-2-1-RC1, netbsd-2-1, netbsd-2-0-base, netbsd-2-0-RELEASE, netbsd-2-0-RC5, netbsd-2-0-RC4, netbsd-2-0-RC3, netbsd-2-0-RC2, netbsd-2-0-RC1, netbsd-2-0-3-RELEASE, netbsd-2-0-2-RELEASE, netbsd-2-0-1-RELEASE, netbsd-2-0, netbsd-2, mjf-devfs2-base, mjf-devfs2, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b, matt-mips64-base2, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, matt-armv6-nbase, matt-armv6-base, matt-armv6, keiichi-mipv6-base, keiichi-mipv6, hpcarm-cleanup-nbase, hpcarm-cleanup-base, hpcarm-cleanup, cube-autoconf-base, cube-autoconf, christos-time_t-nbase, christos-time_t-base, christos-time_t, abandoned-netbsd-4-base, abandoned-netbsd-4
Branch point for: jym-xensuspend
Changes since 1.4: +7 -4 lines
Diff to previous 1.4 (colored)

Merge tzcode2003d.

Revision 1.4 / (download) - annotate - [select for diffs], Sun Sep 16 17:05:17 2001 UTC (19 years, 2 months ago) by wiz
Branch: MAIN
CVS Tags: netbsd-1-6-base, netbsd-1-6-RELEASE, netbsd-1-6-RC3, netbsd-1-6-RC2, netbsd-1-6-RC1, netbsd-1-6-PATCH002-RELEASE, netbsd-1-6-PATCH002-RC4, netbsd-1-6-PATCH002-RC3, netbsd-1-6-PATCH002-RC2, netbsd-1-6-PATCH002-RC1, netbsd-1-6-PATCH002, netbsd-1-6-PATCH001-RELEASE, netbsd-1-6-PATCH001-RC3, netbsd-1-6-PATCH001-RC2, netbsd-1-6-PATCH001-RC1, netbsd-1-6-PATCH001, netbsd-1-6, nathanw_sa_before_merge, nathanw_sa_base, fvdl_fs64_base
Changes since 1.3: +28 -25 lines
Diff to previous 1.3 (colored)

mdoc'ify

Revision 1.3 / (download) - annotate - [select for diffs], Tue Sep 10 22:04:34 1996 UTC (24 years, 2 months ago) by jtc
Branch: MAIN
CVS Tags: wrstuden-devbsize-base, wrstuden-devbsize-19991221, wrstuden-devbsize, nsswitch, netbsd-1-5-base, netbsd-1-5-RELEASE, netbsd-1-5-PATCH003, netbsd-1-5-PATCH002, netbsd-1-5-PATCH001, netbsd-1-5-BETA2, netbsd-1-5-BETA, netbsd-1-5-ALPHA2, netbsd-1-5, netbsd-1-4-base, netbsd-1-4-RELEASE, netbsd-1-4-PATCH003, netbsd-1-4-PATCH002, netbsd-1-4-PATCH001, netbsd-1-4, netbsd-1-3-base, netbsd-1-3-RELEASE, netbsd-1-3-PATCH003-CANDIDATE2, netbsd-1-3-PATCH003-CANDIDATE1, netbsd-1-3-PATCH003-CANDIDATE0, netbsd-1-3-PATCH003, netbsd-1-3-PATCH002, netbsd-1-3-PATCH001, netbsd-1-3-BETA, netbsd-1-3, minoura-xpg4dl-base, minoura-xpg4dl, ivory_soap2, comdex-fall-1999-base, comdex-fall-1999
Branch point for: nathanw_sa
Changes since 1.2: +3 -4 lines
Diff to previous 1.2 (colored)

sync with tzcode96l

Revision 1.2 / (download) - annotate - [select for diffs], Fri Mar 10 18:10:00 1995 UTC (25 years, 8 months ago) by jtc
Branch: MAIN
CVS Tags: netbsd-1-2-base, netbsd-1-2-RELEASE, netbsd-1-2-PATCH001, netbsd-1-2-BETA, netbsd-1-2, netbsd-1-1-base, netbsd-1-1-RELEASE, netbsd-1-1-PATCH001, netbsd-1-1
Branch point for: ivory_soap
Changes since 1.1: +2 -1 lines
Diff to previous 1.1 (colored)

Added NetBSD Id.
Removed "new" from newctime(3) references.

Revision 1.1 / (download) - annotate - [select for diffs], Fri Mar 10 07:08:18 1995 UTC (25 years, 8 months ago) by jtc
Branch: MAIN

Initial revision

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