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

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Default branch: MAIN

Revision 1.22 / (download) - annotate - [select for diffs], Sun Dec 11 17:57:23 2022 UTC (3 months, 2 weeks ago) by christos
Branch: MAIN
CVS Tags: netbsd-10-base, netbsd-10, HEAD
Changes since 1.21: +5 -4 lines
Diff to previous 1.21 (colored)

Merge in 2022g:

    Although tzcode still works with C89, bugs found in recent routine
    maintenance indicate that bitrot has set in and that in practice
    C89 is no longer used to build tzcode.  As it is a maintenance
    burden, support for C89 is planned to be removed soon.  Instead,
    please use compilers compatible with C99, C11, C17, or C23.

    timegm, which tzcode implemented in 1989, will finally be
    standardized 34 years later as part of C23, so timegm is now
    supported even if STD_INSPIRED is not defined.

    Fix bug in zdump's tzalloc emulation on hosts that lack tm_zone.
    (Problem reported by oàn Trầ Công Danh.)

    Fix bug in zic on hosts where malloc(0) yields NULL on success.
    (Problem reported by Tim McBrayer for AIX 6.1.)

    Fix zic configuration to avoid linkage failures on some platforms.
    (Problems reported by Gilmore Davidson and Igor Ivanov.)

    Work around MS-Windows nmake incompatibility with POSIX.
    (Problem reported by Manuela Friedrich.)

    Port mktime and strftime to debugging platforms where accessing
    uninitialized data has undefined behavior (strftime problem
    reported by Robert Elz).

    Check more carefully for unlikely integer overflows, preferring
    C23 <stdckdint.h> to overflow checking by hand, as the latter has
    had obscure bugs.

Revision 1.21 / (download) - annotate - [select for diffs], Fri Oct 22 14:26:04 2021 UTC (17 months ago) by christos
Branch: MAIN
Changes since 1.20: +17 -13 lines
Diff to previous 1.20 (colored)

Change to code and documentation from 2021a -> 2021e

Release 2021e - 2021-10-21 18:41:00 -0700

  Changes to code


Release 2021d - 2021-10-15 13:48:18 -0700

  Changes to code

    'zic -r' now uses "-00" time zone abbreviations for intervals
    with UT offsets that are unspecified due to -r truncation.
    This implements a change in draft Internet RFC 8536bis.

Release 2021c - 2021-10-01 14:21:49 -0700

  Changes to code

    Fix a bug in 'zic -b fat' that caused old timestamps to be
    mishandled in 32-bit-only readers (problem reported by Daniel

  Changes to documentation

    Distribute the SECURITY file (problem reported by Andreas Radke).

Release 2021b - 2021-09-24 16:23:00 -0700

  Changes to maintenance procedure

    The new file SECURITY covers how to report security-related bugs.

    Several backward-compatibility links have been moved to the
    'backward' file.  These links, which range from Africa/Addis_Ababa
    to Pacific/Saipan, are only for compatibility with now-obsolete
    guidelines suggesting an entry for every ISO 3166 code.
    The intercontinental convenience links Asia/Istanbul and
    Europe/Nicosia have also been moved to 'backward'.

  Changes to code

    zic now creates each output file or link atomically,
    possibly by creating a temporary file and then renaming it.
    This avoids races where a TZ setting would temporarily stop
    working while zic was installing a replacement file or link.

    zic -L no longer omits the POSIX TZ string in its output.
    Starting with 2020a, zic -L truncated its output according to the
    "Expires" directive or "#expires" comment in the leapseconds file.
    The resulting TZif files omitted daylight saving transitions after
    the leap second table expired, which led to far less-accurate
    predictions of times after the expiry.  Although future timestamps
    cannot be converted accurately in the presence of leap seconds, it
    is more accurate to convert near-future timestamps with a few
    seconds error than with an hour error, so zic -L no longer
    truncates output in this way.

    Instead, when zic -L is given the "Expires" directive, it now
    outputs the expiration by appending a no-change entry to the leap
    second table.  Although this should work well with most TZif
    readers, it does not conform to Internet RFC 8536 and some pickier
    clients (including tzdb 2017c through 2021a) reject it, so
    "Expires" directives are currently disabled by default.  To enable
    them, set the EXPIRES_LINE Makefile variable.  If a TZif file uses
    this new feature it is marked with a new TZif version number 4,
    a format intended to be documented in a successor to RFC 8536.

    zic -L LEAPFILE -r @LO no longer generates an invalid TZif file
    that omits leap second information for the range LO..B when LO
    falls between two leap seconds A and B.  Instead, it generates a
    TZif version 4 file that represents the previously-missing

    The TZif reader now allows the leap second table to begin with a
    correction other than -1 or +1, and to contain adjacent
    transitions with equal corrections.  This supports TZif version 4.

    The TZif reader now lets leap seconds occur less than 28 days
    apart.  This supports possible future TZif extensions.

    Fix bug that caused 'localtime' etc. to crash when TZ was
    set to a all-year DST string like "EST5EDT4,0/0,J365/25" that does
    not conform to POSIX but does conform to Internet RFC 8536.

    Fix another bug that caused 'localtime' etc. to crash when TZ was
    set to a POSIX-conforming but unusual TZ string like
    "EST5EDT4,0/0,J365/0", where almost all the year is DST.

    Fix yet another bug that caused 'localtime' etc. to mishandle slim
    TZif files containing leap seconds after the last explicit
    transition in the table, or when handling far-future timestamps
    in slim TZif files lacking leap seconds.

    Fix localtime misbehavior involving positive leap seconds.
    This change affects only behavior for "right" system time,
    which contains leap seconds, and only if the UT offset is
    not a multiple of 60 seconds when a positive leap second occurs.
    (No such timezone exists in tzdb, luckily.)  Without the fix,
    the timestamp was ambiguous during a positive leap second.
    With the fix, any seconds occurring after a positive leap second
    and within the same localtime minute are counted through 60, not
    through 59; their UT offset (tm_gmtoff) is the same as before.
    Here is how the fix affects timestamps in a timezone with UT
    offset +01:23:45 (5025 seconds) and with a positive leap second at
    1972-06-30 23:59:60 UTC (78796800):

	time_t    without the fix      with the fix
	78796800  1972-07-01 01:23:45  1972-07-01 01:23:45 (leap second)
	78796801  1972-07-01 01:23:45  1972-07-01 01:23:46
	78796815  1972-07-01 01:23:59  1972-07-01 01:23:60
	78796816  1972-07-01 01:24:00  1972-07-01 01:24:00

    Fix an unlikely bug that caused 'localtime' etc. to misbehave if
    civil time changes a few seconds before time_t wraps around, when
    leap seconds are enabled.

    Fix bug in zic -r; in some cases, the dummy time type after the
    last time transition disagreed with the TZ string, contrary to
    Internet RFC 8563 section 3.3.

    Fix a bug with 'zic -r @X' when X is a negative leap second that
    has a nonnegative correction.  Without the fix, the output file
    was truncated so that X appeared to be a positive leap second.
    Fix a similar, even-less-likely bug when truncating at a positive
    leap second that has a nonpositive correction.

    zic -r now reports an error if given rolling leap seconds, as this
    usage has never generally worked and is evidently unused.

    zic now generates a POSIX-conforming TZ string for TZif files
    where all-year DST is predicted for the indefinite future.
    For example, for all-year Eastern Daylight Time, zic now generates
    "XXX3EDT4,0/0,J365/23" where it previously generated
    "EST5EDT,0/0,J365/25" or "".  (Thanks to Michael Deckers for
    noting the possibility of POSIX conformance.)

    zic.c no longer requires sys/wait.h (thanks to spazmodius for
    noting it wasn't needed).

    When reading slim TZif files, zdump no longer mishandles leap
    seconds on the rare platforms where time_t counts leap seconds,
    fixing a bug introduced in 2014g.

    zdump -v now outputs timestamps at boundaries of what localtime
    and gmtime can represent, instead of the less-useful timestamps
    one day after the minimum and one day before the maximum.
    (Thanks to Arthur David Olson for prototype code, and to Manuela
    Friedrich for debugging help.)

    zdump's -c and -t options are now consistently inclusive for the
    lower time bound and exclusive for the upper.  Formerly they were
    inconsistent.  (Confusion noted by Martin Burnicki.)

  Changes to build procedure

    You can now compile with -DHAVE_MALLOC_ERRNO=0 to port to
    non-POSIX hosts where malloc doesn't set errno.
    (Problem reported by Jan Engelhardt.)

  Changes to documentation

    tzfile.5 better matches a draft successor to RFC 8536

Revision 1.20 / (download) - annotate - [select for diffs], Mon May 25 14:52:48 2020 UTC (2 years, 10 months ago) by christos
Branch: MAIN
CVS Tags: cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x
Changes since 1.19: +7 -7 lines
Diff to previous 1.19 (colored)

Bring in 2020a

Revision / (download) - annotate - [select for diffs], Mon Jun 10 22:05:22 2019 UTC (3 years, 9 months ago) by christos
Branch: phil-wifi
Changes since 1.17: +27 -27 lines
Diff to previous 1.17 (colored) next main 1.18 (colored)

Sync with HEAD

Revision / (download) - annotate - [select for diffs], Mon Nov 26 01:52:12 2018 UTC (4 years, 4 months ago) by pgoyette
Branch: pgoyette-compat
CVS Tags: pgoyette-compat-merge-20190127
Changes since +11 -10 lines
Diff to previous (colored) to branchpoint 1.17 (colored) next main 1.18 (colored)

Sync with HEAD, resolve a couple of conflicts

Revision 1.19 / (download) - annotate - [select for diffs], Sat Oct 27 22:29:24 2018 UTC (4 years, 5 months 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-9-3-RELEASE, netbsd-9-2-RELEASE, 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 / (download) - annotate - [select for diffs], Sat Oct 20 06:58:22 2018 UTC (4 years, 5 months ago) by pgoyette
Branch: pgoyette-compat
Changes since 1.17: +18 -19 lines
Diff to previous 1.17 (colored)

Sync with head

Revision 1.18 / (download) - annotate - [select for diffs], Fri Oct 19 23:05:35 2018 UTC (4 years, 5 months 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 (5 years, 8 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 / (download) - annotate - [select for diffs], Fri Apr 21 16:53:09 2017 UTC (5 years, 11 months ago) by bouyer
Branch: bouyer-socketcan
Changes since 1.15: +5 -4 lines
Diff to previous 1.15 (colored) next main 1.16 (colored)

Sync with HEAD

Revision / (download) - annotate - [select for diffs], Mon Mar 20 06:56:58 2017 UTC (6 years ago) by pgoyette
Branch: pgoyette-localcount
Changes since +5 -4 lines
Diff to previous (colored) to branchpoint 1.14 (colored) next main 1.15 (colored)

Sync with HEAD

Revision 1.16 / (download) - annotate - [select for diffs], Sat Mar 11 18:23:14 2017 UTC (6 years 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 / (download) - annotate - [select for diffs], Fri Nov 4 14:48:53 2016 UTC (6 years, 4 months ago) by pgoyette
Branch: pgoyette-localcount
Changes since 1.14: +128 -14 lines
Diff to previous 1.14 (colored)

Sync with HEAD

Revision 1.15 / (download) - annotate - [select for diffs], Fri Oct 7 15:29:42 2016 UTC (6 years, 5 months 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 / (download) - annotate - [select for diffs], Sun Jan 25 09:11:03 2015 UTC (8 years, 2 months ago) by martin
Branch: netbsd-7
CVS Tags: netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0
Changes since 1.11: +36 -15 lines
Diff to previous 1.11 (colored) next main 1.12 (colored)

Pull up the following revisions via patch, requested by apb in ticket #453:

doc/3RDPARTY                                   	 up to 1.1195
usr.sbin/zdump/Makefile                        	 up to 1.9
usr.sbin/zic/Makefile                          	 up to 1.15
lib/libc/time/Makefile                         	 up to 1.25
lib/libc/time/                     	 up to 1.21
lib/libc/time/NEWS                             	 up to 1.8
lib/libc/time/README                           	 up to 1.9
lib/libc/time/Theory                           	 up to 1.16
lib/libc/time/asctime.c                        	 up to 1.20
lib/libc/time/checktab.awk                     	 up to 1.8
lib/libc/time/ctime.3                          	 up to 1.51
lib/libc/time/getdate.c                        	 up to 1.3
lib/libc/time/localtime.c                      	 up to 1.92
lib/libc/time/private.h                        	 up to 1.38
lib/libc/time/strftime.c                       	 up to 1.33
lib/libc/time/time2posix.3                     	 up to 1.19
lib/libc/time/tz-art.htm                       	 up to 1.8
lib/libc/time/tz-link.htm                      	 up to 1.20
lib/libc/time/tzfile.5                         	 up to 1.22
lib/libc/time/tzfile.h                         	 up to 1.16
lib/libc/time/tzselect.8                       	 up to 1.6
lib/libc/time/tzselect.ksh                     	 up to 1.12
lib/libc/time/tzset.3                          	 up to 1.31
lib/libc/time/zdump.8                          	 up to 1.14
lib/libc/time/zdump.c                          	 up to 1.40
lib/libc/time/zic.8                            	 up to 1.24
lib/libc/time/zic.c                            	 up to 1.52

Update tzcode from 2014e to 2014j.

Revision 1.14 / (download) - annotate - [select for diffs], Thu Oct 23 18:45:58 2014 UTC (8 years, 5 months 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 (8 years, 5 months ago) by christos
Branch: MAIN
Changes since 1.12: +36 -16 lines
Diff to previous 1.12 (colored)

Sync with tzcode2014h

Revision / (download) - annotate - [select for diffs], Wed Aug 20 00:02:16 2014 UTC (8 years, 7 months ago) by tls
Branch: tls-maxphys
Changes since 1.9: +30 -8 lines
Diff to previous 1.9 (colored) next main 1.10 (colored)

Rebase to HEAD as of a few days ago.

Revision 1.12 / (download) - annotate - [select for diffs], Fri Aug 15 11:04:07 2014 UTC (8 years, 7 months ago) by christos
Branch: MAIN
Changes since 1.11: +4 -3 lines
Diff to previous 1.11 (colored)

merge tzcode2014f via patch

Revision / (download) - annotate - [select for diffs], Thu May 22 11:36:54 2014 UTC (8 years, 10 months ago) by yamt
Branch: yamt-pagecache
Changes since +29 -7 lines
Diff to previous (colored) to branchpoint 1.8 (colored) next main 1.9 (colored)

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

Revision 1.11 / (download) - annotate - [select for diffs], Fri Sep 20 19:06:54 2013 UTC (9 years, 6 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

    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 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 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 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 / (download) - annotate - [select for diffs], Tue Jul 23 21:07:29 2013 UTC (9 years, 8 months ago) by riastradh
Branch: riastradh-drm2
Changes since 1.9: +20 -4 lines
Diff to previous 1.9 (colored) next main 1.10 (colored)

sync with HEAD

Revision 1.10 / (download) - annotate - [select for diffs], Wed Jul 17 20:13:04 2013 UTC (9 years, 8 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 / (download) - annotate - [select for diffs], Tue Oct 30 18:59:05 2012 UTC (10 years, 5 months ago) by yamt
Branch: yamt-pagecache
CVS Tags: yamt-pagecache-tag8
Changes since 1.8: +1 -2 lines
Diff to previous 1.8 (colored)

sync with head

Revision 1.9 / (download) - annotate - [select for diffs], Thu Aug 9 12:38:26 2012 UTC (10 years, 7 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 (13 years, 2 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 (13 years, 2 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 / (download) - annotate - [select for diffs] (vendor branch), Sun Oct 25 16:20:16 2009 UTC (13 years, 5 months ago) by mlelstv
Branch: ADO
Changes since +18 -4 lines
Diff to previous (colored)

import tzcode2009k

Revision / (download) - annotate - [select for diffs], Wed May 13 19:18:28 2009 UTC (13 years, 10 months ago) by jym
Branch: jym-xensuspend
Changes since 1.5: +2 -2 lines
Diff to previous 1.5 (colored) next main 1.6 (colored)

Sync with HEAD.

Third (and last) commit. See

Revision 1.6 / (download) - annotate - [select for diffs], Mon Mar 9 19:24:27 2009 UTC (14 years 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 (19 years, 5 months 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 / (download) - annotate - [select for diffs] (vendor branch), Wed Oct 29 20:19:04 2003 UTC (19 years, 5 months ago) by kleink
Branch: ADO
Changes since +7 -1 lines
Diff to previous (colored)

Import tzcode2003d.

Revision / (download) - annotate - [select for diffs], Mon Oct 8 20:22:23 2001 UTC (21 years, 5 months ago) by nathanw
Branch: nathanw_sa
CVS Tags: nathanw_sa_end
Changes since 1.3: +28 -25 lines
Diff to previous 1.3 (colored) next main 1.4 (colored)

Catch up to -current.

Revision 1.4 / (download) - annotate - [select for diffs], Sun Sep 16 17:05:17 2001 UTC (21 years, 6 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)


Revision 1.3 / (download) - annotate - [select for diffs], Tue Sep 10 22:04:34 1996 UTC (26 years, 6 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 / (download) - annotate - [select for diffs] (vendor branch), Tue Sep 10 21:59:47 1996 UTC (26 years, 6 months ago) by jtc
Branch: ADO
Changes since +2 -3 lines
Diff to previous (colored)

import tzcode96l

Revision / (download) - annotate - [select for diffs], Fri Mar 10 18:10:01 1995 UTC (28 years ago) by jtc
Branch: ivory_soap
Changes since +41 -0 lines
Diff to previous (colored) to branchpoint 1.2 (colored) next main 1.3 (colored)

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

Revision, Fri Mar 10 18:10:00 1995 UTC (28 years ago) by jtc
Branch: ivory_soap
Changes since 1.2: +0 -41 lines

file zdump.8 was added on branch ivory_soap on 1995-03-10 18:10:01 +0000

Revision 1.2 / (download) - annotate - [select for diffs], Fri Mar 10 18:10:00 1995 UTC (28 years 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 / (download) - annotate - [select for diffs] (vendor branch), Fri Mar 10 07:08:18 1995 UTC (28 years ago) by jtc
Branch: ADO
Changes since 1.1: +0 -0 lines
Diff to previous 1.1 (colored)

Strictly speaking, these files probably don't belong in the libc sources.
On the other hand, it makes it easier to track the master tzcode sources
if we try to keep the distribution together as much as possible.

The zic and zdump commands will access the files the need with make's
.PATH facility.

Revision 1.1 / (download) - annotate - [select for diffs], Fri Mar 10 07:08:18 1995 UTC (28 years ago) by jtc
Branch: MAIN

Initial revision

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