Update.

2005-01-25  Jakub Jelinek  <jakub@redhat.com>

	* stdlib/fmtmsg.c (addseverity): Remove new_string variable.
	(free_mem): Don't free string.
	* stdlib/tst-fmtmsg.c: Include string.h.
	(main): Add some more tests.

2005-01-25  Andreas Schwab  <schwab@suse.de>

	* timezone/asia: Update from tzdata2005c.
	* timezone/backward: Likewise.
	* timezone/leapseconds: Likewise.
	* timezone/northamerica: Likewise.
	* timezone/southamerica: Likewise.

	* timezone/private.h: Update from tzcode2005c.
	* timezone/tzfile.h: Likewise.
	* timezone/zdump.c: Likewise.
	* timezone/zic.c: Likewise.

10 files changed, 540 insertions, 196 deletions

diff --git a/timezone/asia b/timezone/asia
index 3c2c1a1..32e6e3c 100644
--- a/timezone/asia
+++ b/timezone/asia
@@ -1,4 +1,4 @@
-# @(#)asia	7.77
+# @(#)asia	7.78
 
 # This data is by no means authoritative; if you think you know better,
 # go ahead and edit the file (and please send any changes to
@@ -639,7 +639,7 @@ Rule	Zion	1988	only	-	Apr	 9	0:00	1:00	D
 Rule	Zion	1988	only	-	Sep	 3	0:00	0	S
 
 # From Ephraim Silverberg <ephraim@cs.huji.ac.il>
-# (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17 and 2000-07-25):
+# (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17, 2000-07-25, and 2004-12-22):
 
 # According to the Office of the Secretary General of the Ministry of
 # Interior, there is NO set rule for Daylight-Savings/Standard time changes.
@@ -690,13 +690,13 @@ Rule	Zion	1995	only	-	Sep	 3	0:00	0	S
 # time, Haim Ramon.  The official announcement regarding 1996-1998
 # (with the dates for 1997-1998 no longer being relevant) can be viewed at:
 #
-#   ftp://ftp.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz
+#   ftp://ftp.cs.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz
 #
 # The dates for 1997-1998 were altered by his successor, Rabbi Eli Suissa.
 #
 # The official announcements for the years 1997-1999 can be viewed at:
 #
-#   ftp://ftp.huji.ac.il/pub/tz/announcements/YYYY.ps.gz
+#   ftp://ftp.cs.huji.ac.il/pub/tz/announcements/YYYY.ps.gz
 #
 #       where YYYY is the relevant year.
 
@@ -716,12 +716,12 @@ Rule	Zion	1999	only	-	Sep	 3	2:00	0	S
 #
 # The official announcement for the start date of 2000 can be viewed at:
 #
-#	ftp://ftp.huji.ac.il/pub/tz/announcements/2000-start.ps.gz
+#	ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-start.ps.gz
 #
 # The official announcement for the end date of 2000 and the dates
 # for the years 2001-2004 can be viewed at:
 #
-#	ftp://ftp.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz
+#	ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Zion	2000	only	-	Apr	14	2:00	1:00	D
@@ -735,52 +735,97 @@ Rule	Zion	2003	only	-	Oct	 3	1:00	0	S
 Rule	Zion	2004	only	-	Apr	 7	1:00	1:00	D
 Rule	Zion	2004	only	-	Sep	22	1:00	0	S
 
-# From Paul Eggert (2000-07-25):
-# Here are guesses for rules after 2004.
-# They are probably wrong, but they are more likely than no DST at all.
+# Yesterday, the Knesset Interior Committee passed a proposed (originally
+# in March 2004) change to the Time Setting Law that would make the dates
+# for DST from 2005 and beyond so that DST starts on the night _after_ the
+# first night of the Passover holiday at midnight until midnight of the
+# Saturday night _before_ the fast of Yom Kippur.
+#
+# Those who can read Hebrew can view the proposal at:
+#
+#	ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+.ps
+#
+# The proposal still has to be passed by the Knesset (three readings) for
+# it to become law....
+
+# From Paul Eggert (2004-12-22):
+# For now, guess that the rules proposed on 2004-12-20 will be adopted.
+# This is quite possibly wrong, but it is more likely than no DST at all.
+# I used Ed Reingold's cal-hebrew in GNU Emacs 21.3, along with code
+# written by Ephraim Silverberg, to generate this list.
 # Rule	NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
-Rule	Zion	2005	max	-	Apr	 1	1:00	1:00	D
-Rule	Zion	2005	max	-	Oct	 1	1:00	0	S
+Rule	Zion	2005	only	-	Apr	25	0:00	1:00	D
+Rule	Zion	2005	only	-	Oct	 9	0:00	0	S
+Rule	Zion	2006	only	-	Apr	14	0:00	1:00	D
+Rule	Zion	2006	only	-	Oct	 1	0:00	0	S
+Rule	Zion	2007	only	-	Apr	 4	0:00	1:00	D
+Rule	Zion	2007	only	-	Sep	16	0:00	0	S
+Rule	Zion	2008	only	-	Apr	21	0:00	1:00	D
+Rule	Zion	2008	only	-	Oct	 5	0:00	0	S
+Rule	Zion	2009	only	-	Apr	10	0:00	1:00	D
+Rule	Zion	2009	only	-	Sep	27	0:00	0	S
+Rule	Zion	2010	only	-	Mar	31	0:00	1:00	D
+Rule	Zion	2010	only	-	Sep	12	0:00	0	S
+Rule	Zion	2011	only	-	Apr	20	0:00	1:00	D
+Rule	Zion	2011	only	-	Oct	 2	0:00	0	S
+Rule	Zion	2012	only	-	Apr	 8	0:00	1:00	D
+Rule	Zion	2012	only	-	Sep	23	0:00	0	S
+Rule	Zion	2013	only	-	Mar	27	0:00	1:00	D
+Rule	Zion	2013	only	-	Sep	 8	0:00	0	S
+Rule	Zion	2014	only	-	Apr	16	0:00	1:00	D
+Rule	Zion	2014	only	-	Sep	28	0:00	0	S
+Rule	Zion	2015	only	-	Apr	 5	0:00	1:00	D
+Rule	Zion	2015	only	-	Sep	20	0:00	0	S
+Rule	Zion	2016	only	-	Apr	24	0:00	1:00	D
+Rule	Zion	2016	only	-	Oct	 9	0:00	0	S
+Rule	Zion	2017	only	-	Apr	12	0:00	1:00	D
+Rule	Zion	2017	only	-	Sep	24	0:00	0	S
+Rule	Zion	2018	only	-	Apr	 1	0:00	1:00	D
+Rule	Zion	2018	only	-	Sep	16	0:00	0	S
+Rule	Zion	2019	only	-	Apr	21	0:00	1:00	D
+Rule	Zion	2019	only	-	Oct	 6	0:00	0	S
+Rule	Zion	2020	only	-	Apr	10	0:00	1:00	D
+Rule	Zion	2020	only	-	Sep	27	0:00	0	S
+Rule	Zion	2021	only	-	Mar	29	0:00	1:00	D
+Rule	Zion	2021	only	-	Sep	12	0:00	0	S
+Rule	Zion	2022	only	-	Apr	17	0:00	1:00	D
+Rule	Zion	2022	only	-	Oct	 2	0:00	0	S
+Rule	Zion	2023	only	-	Apr	 7	0:00	1:00	D
+Rule	Zion	2023	only	-	Sep	24	0:00	0	S
+Rule	Zion	2024	only	-	Apr	24	0:00	1:00	D
+Rule	Zion	2024	only	-	Oct	 6	0:00	0	S
+Rule	Zion	2025	only	-	Apr	14	0:00	1:00	D
+Rule	Zion	2025	only	-	Sep	28	0:00	0	S
+Rule	Zion	2026	only	-	Apr	 3	0:00	1:00	D
+Rule	Zion	2026	only	-	Sep	20	0:00	0	S
+Rule	Zion	2027	only	-	Apr	23	0:00	1:00	D
+Rule	Zion	2027	only	-	Oct	10	0:00	0	S
+Rule	Zion	2028	only	-	Apr	12	0:00	1:00	D
+Rule	Zion	2028	only	-	Sep	24	0:00	0	S
+Rule	Zion	2029	only	-	Apr	 1	0:00	1:00	D
+Rule	Zion	2029	only	-	Sep	16	0:00	0	S
+Rule	Zion	2030	only	-	Apr	19	0:00	1:00	D
+Rule	Zion	2030	only	-	Oct	 6	0:00	0	S
+Rule	Zion	2031	only	-	Apr	 9	0:00	1:00	D
+Rule	Zion	2031	only	-	Sep	21	0:00	0	S
+Rule	Zion	2032	only	-	Mar	28	0:00	1:00	D
+Rule	Zion	2032	only	-	Sep	12	0:00	0	S
+Rule	Zion	2033	only	-	Apr	15	0:00	1:00	D
+Rule	Zion	2033	only	-	Oct	 2	0:00	0	S
+Rule	Zion	2034	only	-	Apr	 5	0:00	1:00	D
+Rule	Zion	2034	only	-	Sep	17	0:00	0	S
+Rule	Zion	2035	only	-	Apr	25	0:00	1:00	D
+Rule	Zion	2035	only	-	Oct	 7	0:00	0	S
+Rule	Zion	2036	only	-	Apr	13	0:00	1:00	D
+Rule	Zion	2036	only	-	Sep	28	0:00	0	S
+Rule	Zion	2037	only	-	Apr	 1	0:00	1:00	D
+Rule	Zion	2037	only	-	Sep	13	0:00	0	S
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	Asia/Jerusalem	2:20:56 -	LMT	1880
 			2:20:40	-	JMT	1918	# Jerusalem Mean Time?
 			2:00	Zion	I%sT
 
-# From Ephraim Silverberg (2003-03-23):
-#
-# Minister of Interior Poraz has announced that he will respect the law
-# passed in July 2000 (proposed at the time jointly by himself and
-# then-MK David Azulai [Shas]) fixing the dates for 2000-2004.  Hence,
-# the dates for 2003 and 2004 remain unchanged....
-#
-# As far as 2005 and beyond, no dates have been set.  However, the
-# minister has mentioned that he wishes to propose to move Israel's
-# timezone in 2005 from GMT+2 to GMT+3 and upon that have DST during
-# the summer months (i.e. GMT+4).  However, no legislation in this
-# direction is expected until the latter part of 2004 which is a long
-# time off in terms of Israeli politics.
-
-# (2004-09-20):
-# The latest rumour, however, is that in 2005, when the clock changes to
-# Daylight Saving Time (date as yet unknown), the move will be a two-hour leap
-# forward (from UTC+0200 to UTC+0400) and then, in the fall, the clock will
-# move back only an hour to UTC+0300 thus effectively moving Israel's timezone
-# from UTC+0200 to UTC+0300.  However, no actual draft has been put before the
-# Knesset (Israel's Parliament) though the intention is to do so this
-# month [2004-09].
-
-# (2004-09-26):
-# Even though the draft law for the above did pass the Ministerial Committee
-# for Legislative Matters three months ago, it was voted down in today's
-# Cabinet meeting.  The current suggestion is to keep the current timezone at
-# UTC+0200 but have an extended period of Daylight Saving Time (UTC+0300) from
-# the beginning of Passover holiday in the spring to after the Tabernacle
-# holiday in the fall (i.e. the dates of which are governed by the Hebrew
-# calendar but this means at least 184 days of DST).  However, this is only a
-# suggestion that was raised in today's cabinet meeting and has not yet been
-# drafted.
-
 
 
 ###############################################################################
diff --git a/timezone/backward b/timezone/backward
index 6e118c2..9fbab94 100644
--- a/timezone/backward
+++ b/timezone/backward
@@ -1,4 +1,4 @@
-# @(#)backward	7.26
+# @(#)backward	7.27
 
 # This file provides links between current names for time zones
 # and their old names.  Many names changed in late 1993.
@@ -13,7 +13,7 @@ Link	America/Argentina/Jujuy	America/Jujuy
 Link	America/Indiana/Knox	America/Knox_IN
 Link	America/Argentina/Mendoza	America/Mendoza
 Link	America/Rio_Branco	America/Porto_Acre
-Link	America/Cordoba		America/Rosario
+Link	America/Argentina/Cordoba	America/Rosario
 Link	America/St_Thomas	America/Virgin
 Link	Asia/Ashgabat		Asia/Ashkhabad
 Link	Asia/Chongqing		Asia/Chungking
@@ -34,7 +34,7 @@ Link	Australia/Hobart	Australia/Tasmania
 Link	Australia/Melbourne	Australia/Victoria
 Link	Australia/Perth		Australia/West
 Link	Australia/Broken_Hill	Australia/Yancowinna
-Link	America/Porto_Acre	Brazil/Acre
+Link	America/Rio_Branco	Brazil/Acre
 Link	America/Noronha		Brazil/DeNoronha
 Link	America/Sao_Paulo	Brazil/East
 Link	America/Manaus		Brazil/West
@@ -55,10 +55,10 @@ Link	Europe/Dublin		Eire
 Link	Europe/Chisinau		Europe/Tiraspol
 Link	Europe/London		GB
 Link	Europe/London		GB-Eire
-Link	Etc/GMT+0		GMT+0
-Link	Etc/GMT-0		GMT-0
-Link	Etc/GMT0		GMT0
-Link	Etc/Greenwich		Greenwich
+Link	Etc/GMT			GMT+0
+Link	Etc/GMT			GMT-0
+Link	Etc/GMT			GMT0
+Link	Etc/GMT			Greenwich
 Link	Asia/Hong_Kong		Hongkong
 Link	Atlantic/Reykjavik	Iceland
 Link	Asia/Tehran		Iran
@@ -70,7 +70,7 @@ Link	Africa/Tripoli		Libya
 Link	America/Tijuana		Mexico/BajaNorte
 Link	America/Mazatlan	Mexico/BajaSur
 Link	America/Mexico_City	Mexico/General
-Link	America/Shiprock	Navajo
+Link	America/Denver		Navajo
 Link	Pacific/Auckland	NZ
 Link	Pacific/Chatham		NZ-CHAT
 Link	Pacific/Pago_Pago	Pacific/Samoa
@@ -95,6 +95,6 @@ Link	America/Denver		US/Mountain
 Link	America/Los_Angeles	US/Pacific
 Link	Pacific/Pago_Pago	US/Samoa
 Link	Etc/UTC			UTC
-Link	Etc/Universal		Universal
+Link	Etc/UTC			Universal
 Link	Europe/Moscow		W-SU
-Link	Etc/Zulu		Zulu
+Link	Etc/UTC			Zulu
diff --git a/timezone/europe b/timezone/europe
index eeb114f..2da2df1 100644
--- a/timezone/europe
+++ b/timezone/europe
@@ -1,4 +1,4 @@
-# @(#)europe	7.88
+# @(#)europe	7.91
 
 # This data is by no means authoritative; if you think you know better,
 # go ahead and edit the file (and please send any changes to
@@ -708,7 +708,7 @@ Zone	Europe/Sofia	1:33:16 -	LMT	1880
 # see Serbia and Montenegro
 
 # Cyprus
-# See the `asia' file.
+# Please see the `asia' file for Asia/Nicosia.
 
 # Czech Republic
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -754,6 +754,11 @@ Zone Atlantic/Faeroe	-0:27:04 -	LMT	1908 Jan 11	# Torshavn
 			 0:00	-	WET	1981
 			 0:00	EU	WE%sT
 #
+# From Paul Eggert (2004-10-31):
+# During World War II, Germany maintained secret manned weather stations in
+# East Greenland and Franz Josef Land, but we don't know their time zones.
+# My source for this is Wilhelm Dege's book mentioned under Svalbard.
+#
 # From Paul Eggert (1996-11-22):
 # Greenland joined the EU as part of Denmark, obtained home rule on 1979-05-01,
 # and left the EU on 1985-02-01.  It therefore should have been using EU
@@ -1055,6 +1060,11 @@ Zone	Europe/Berlin	0:53:28 -	LMT	1893 Apr
 			1:00	Germany	CE%sT	1980
 			1:00	EU	CE%sT
 
+# Georgia
+# Please see the "asia" file for Asia/Tbilisi.
+# Herodotus (Histories, IV.45) says Georgia north of the Phasis (now Rioni)
+# is in Europe.  Our reference location Tbilisi is in the Asian part.
+
 # Gibraltar
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Europe/Gibraltar	-0:21:24 -	LMT	1880 Aug  2
@@ -1611,7 +1621,7 @@ Zone	Europe/Oslo	0:43:00 -	LMT	1895 Jan  1
 # From Paul Eggert (2001-05-01):
 #
 # Actually, Jan Mayen was never occupied by Germany during World War II,
-# so it must have diverged from Oslo time during the war, as Olso was
+# so it must have diverged from Oslo time during the war, as Oslo was
 # keeping Berlin time.
 #
 # <http://home.no.net/janmayen/history.htm> says that the meteorologists
@@ -1628,7 +1638,7 @@ Zone	Europe/Oslo	0:43:00 -	LMT	1895 Jan  1
 # <http://www.svalbard.com/SvalbardFAQ.html> says that the Germans were
 # expelled on 1942-05-14.  However, small parties of Germans did return,
 # and according to Wilhelm Dege's book "War North of 80" (1954)
-# <http://www.utpress.utoronto.ca/publishing/rights/dege_warnorthof80.htm>
+# <http://www.ucalgary.ca/UofC/departments/UP/1-55238/1-55238-110-2.html>
 # the German armed forces at the Svalbard weather station code-named
 # Haudegen did not surrender to the Allies until September 1945.
 #
diff --git a/timezone/leapseconds b/timezone/leapseconds
index 7add330..385ee66 100644
--- a/timezone/leapseconds
+++ b/timezone/leapseconds
@@ -1,4 +1,4 @@
-# @(#)leapseconds	7.17
+# @(#)leapseconds	7.18
 
 # Allowance for leapseconds added to each timezone file.
 
@@ -45,7 +45,6 @@ Leap	1997	Jun	30	23:59:60	+	S
 Leap	1998	Dec	31	23:59:60	+	S
 
 # 	INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
-# 
 # SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE
 # 
 # SERVICE DE LA ROTATION TERRESTRE
@@ -55,9 +54,10 @@ Leap	1998	Dec	31	23:59:60	+	S
 # FAX       : 33 (0) 1 40 51 22 91
 # Internet  : services.iers@obspm.fr
 # 
-# 						Paris, 15 January 2004
+# 						Paris, 21 July 2004
+# 
 # 
-# 						Bulletin C 27
+# 						Bulletin C 28
 # 
 # 						To authorities responsible
 # 						for the measurement and
@@ -65,7 +65,7 @@ Leap	1998	Dec	31	23:59:60	+	S
 # 
 # 			INFORMATION ON UTC - TAI
 # 
-# NO positive leap second will be introduced at the end of June 2004.
+# NO positive leap second will be introduced at the end of December 2004.
 # The difference between UTC and the International Atomic Time TAI is:
 # 
 # 	from 1999 January 1, 0h UTC, until further notice : UTC-TAI = -32 s
@@ -78,4 +78,3 @@ Leap	1998	Dec	31	23:59:60	+	S
 # 					Daniel GAMBIS
 # 					Director
 # 					Earth Orientation Center of IERS
-# 					Observatoire de Paris, France
diff --git a/timezone/northamerica b/timezone/northamerica
index 6e755b0..f9d2f6a 100644
--- a/timezone/northamerica
+++ b/timezone/northamerica
@@ -1,4 +1,4 @@
-# @(#)northamerica	7.69
+# @(#)northamerica	7.71
 # also includes Central America and the Caribbean
 
 # This data is by no means authoritative; if you think you know better,
@@ -208,6 +208,13 @@ Rule	US	1987	max	-	Apr	Sun>=1	2:00	1:00	D
 # Pennsylvania, Rhode Island, South Carolina, eastern Tennessee,
 # Vermont, Virginia, West Virginia
 
+# From Dave Cantor (2004-11-02):
+# Early this summer I had the occasion to visit the Mount Washington
+# Observatory weather station atop (of course!) Mount Washington [, NH]....
+# One of the staff members said that the station was on Eastern Standard Time
+# and didn't change their clocks for Daylight Saving ... so that their
+# reports will always have times which are 5 hours behind UTC.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER
 Rule	NYC	1920	only	-	Mar	lastSun	2:00	1:00	D
 Rule	NYC	1920	only	-	Oct	lastSun	2:00	0	S
@@ -355,10 +362,26 @@ Zone America/Adak	 12:13:21 -	LMT	1867 Oct 18
 			-11:00	US	B%sT	1983 Oct 30 2:00
 			-10:00	US	AH%sT	1983 Nov 30
 			-10:00	US	HA%sT
+# The following switches don't quite make our 1970 cutoff.
+#
 # Shanks writes that part of southwest Alaska (e.g. Aniak)
 # switched from -11:00 to -10:00 on 1968-09-22 at 02:00,
 # and another part (e.g. Akiak) made the same switch five weeks later.
-# These switches don't quite make our 1970 cutoff.
+#
+# From David Flater (2004-11-09):
+# In e-mail, 2004-11-02, Ray Hudson, historian/liaison to the Unalaska
+# Historic Preservation Commission, provided this information, which
+# suggests that Unalaska deviated from statutory time from early 1967
+# possibly until 1983:
+#
+#  Minutes of the Unalaska City Council Meeting, January 10, 1967:
+#  "Except for St. Paul and Akutan, Unalaska is the only important
+#  location not on Alaska Standard Time.  The following resolution was
+#  made by William Robinson and seconded by Henry Swanson:  Be it
+#  resolved that the City of Unalaska hereby goes to Alaska Standard
+#  Time as of midnight Friday, January 13, 1967 (1 A.M. Saturday,
+#  January 14, Alaska Standard Time.)  This resolution was passed with
+#  three votes for and one against."
 
 # Hawaii
 #
@@ -1731,6 +1754,15 @@ Zone America/Costa_Rica	-5:36:20 -	LMT	1890		# San Jose
 # to DST--and one more hour on 1999-04-04--when the announcers will have
 # returned to Baltimore, which switches on that date.)
 
+# From Evert van der Veer via Steffen Thorsen (2004-10-28):
+# Cuba is not going back to standard time this year.
+# From Paul Eggert (2004-10-28):
+# http://www.granma.cu/ingles/2004/septiembre/juev30/41medid-i.html
+# says that it's due to a problem at the Antonio Guiteras
+# thermoelectric plant, and says "This October there will be no return
+# to normal hours (after daylight saving time)".
+# For now, let's assume that it's a one-year temporary measure.
+
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	Cuba	1928	only	-	Jun	10	0:00	1:00	D
 Rule	Cuba	1928	only	-	Oct	10	0:00	0	S
@@ -1759,8 +1791,9 @@ Rule	Cuba	1991	1995	-	Oct	Sun>=8	0:00s	0	S
 Rule	Cuba	1996	only	-	Oct	 6	0:00s	0	S
 Rule	Cuba	1997	only	-	Oct	12	0:00s	0	S
 Rule	Cuba	1998	1999	-	Mar	lastSun	0:00s	1:00	D
-Rule	Cuba	1998	max	-	Oct	lastSun	0:00s	0	S
+Rule	Cuba	1998	2003	-	Oct	lastSun	0:00s	0	S
 Rule	Cuba	2000	max	-	Apr	Sun>=1	0:00s	1:00	D
+Rule	Cuba	2005	max	-	Oct	lastSun	0:00s	0	S
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone	America/Havana	-5:29:28 -	LMT	1890
diff --git a/timezone/private.h b/timezone/private.h
index 5766305..5de2f7d 100644
--- a/timezone/private.h
+++ b/timezone/private.h
@@ -21,7 +21,7 @@
 
 #ifndef lint
 #ifndef NOID
-static char	privatehid[] = "@(#)private.h	7.54";
+static char	privatehid[] = "@(#)private.h	7.55";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
@@ -208,6 +208,7 @@ extern char *	asctime_r();
 /*
 ** Private function declarations.
 */
+
 char *	icalloc P((int nelem, int elsize));
 char *	icatalloc P((char * old, const char * new));
 char *	icpyalloc P((const char * string));
@@ -217,7 +218,6 @@ void	icfree P((char * pointer));
 void	ifree P((char * pointer));
 char *	scheck P((const char *string, const char *format));
 
-
 /*
 ** Finally, some convenience items.
 */
@@ -238,6 +238,15 @@ char *	scheck P((const char *string, const char *format));
 #define TYPE_SIGNED(type) (((type) -1) < 0)
 #endif /* !defined TYPE_SIGNED */
 
+/*
+** Since the definition of TYPE_INTEGRAL contains floating point numbers,
+** it cannot be used in preprocessor directives.
+*/
+
+#ifndef TYPE_INTEGRAL
+#define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
+#endif /* !defined TYPE_INTEGRAL */
+
 #ifndef INT_STRLEN_MAXIMUM
 /*
 ** 302 / 1000 is log10(2.0) rounded up.
diff --git a/timezone/southamerica b/timezone/southamerica
index 9124910..2e9faf4 100644
--- a/timezone/southamerica
+++ b/timezone/southamerica
@@ -1,4 +1,4 @@
-# @(#)southamerica	7.54
+# @(#)southamerica	7.57
 
 # This data is by no means authoritative; if you think you know better,
 # go ahead and edit the file (and please send any changes to
@@ -671,7 +671,7 @@ Zone America/Campo_Grande -3:38:28 -	LMT	1914
 # Mato Grosso (MT)
 Zone America/Cuiaba	-3:44:20 -	LMT	1914
 			-4:00	Brazil	AM%sT	2003 Sep 24
-			-4:00	-	AMT	2004 Oct  4
+			-4:00	-	AMT	2004 Oct  1
 			-4:00	Brazil	AM%sT
 #
 # west Para (PA), Rondonia (RO)
@@ -942,9 +942,16 @@ Rule	Para	1998	2001	-	Mar	Sun>=1	0:00	0	-
 # A decree was issued in Paraguay (no. 16350) on 2002-02-26 that changed the
 # dst method to be from the first Sunday in September to the first Sunday in
 # April.
-Rule	Para	2002	max	-	Apr	Sun>=1	0:00	0	-
-Rule	Para	2002	max	-	Sep	Sun>=1	0:00	1:00	S
-
+Rule	Para	2002	2004	-	Apr	Sun>=1	0:00	0	-
+Rule	Para	2002	2003	-	Sep	Sun>=1	0:00	1:00	S
+#
+# From Jesper Norgaard Welen (2005-01-02):
+# There are several sources that claim that Paraguay made
+# a timezone rule change in autumn 2004.
+# From Steffen Thorsen (2005-01-05):
+# Decree 1,867 (2004-03-05) <http://www.labor.com.py/noticias.asp?id=27>
+Rule	Para	2004	max	-	Oct	Sun>=15	0:00	1:00	S
+Rule	Para	2005	max	-	Mar	Sun>=8	0:00	0	-
 
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Asuncion	-3:50:40 -	LMT	1890
diff --git a/timezone/tzfile.h b/timezone/tzfile.h
index 0921c3c..0e9966a 100644
--- a/timezone/tzfile.h
+++ b/timezone/tzfile.h
@@ -21,7 +21,7 @@
 
 #ifndef lint
 #ifndef NOID
-static char	tzfilehid[] = "@(#)tzfile.h	7.14";
+static char	tzfilehid[] = "@(#)tzfile.h	7.16";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
@@ -156,12 +156,21 @@ struct tzhead {
 #define EPOCH_YEAR	1970
 #define EPOCH_WDAY	TM_THURSDAY
 
+#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+
 /*
-** Accurate only for the past couple of centuries;
-** that will probably do.
+** Since everything in isleap is modulo 400 (or a factor of 400), we know that
+**	isleap(y) == isleap(y % 400)
+** and so
+**	isleap(a + b) == isleap((a + b) % 400)
+** or
+**	isleap(a + b) == isleap(a % 400 + b % 400)
+** This is true even if % means modulo rather than Fortran remainder
+** (which is allowed by C89 but not C99).
+** We use this to avoid addition overflow problems.
 */
 
-#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+#define isleap_sum(a, b)	isleap((a) % 400 + (b) % 400)
 
 #ifndef USG
 
diff --git a/timezone/zdump.c b/timezone/zdump.c
index 20bb916..bd71326 100644
--- a/timezone/zdump.c
+++ b/timezone/zdump.c
@@ -1,4 +1,4 @@
-static char	elsieid[] = "@(#)zdump.c	7.40";
+static char	elsieid[] = "@(#)zdump.c	7.61";
 
 /*
 ** This code has been made independent of the rest of the time
@@ -11,6 +11,15 @@ static char	elsieid[] = "@(#)zdump.c	7.40";
 #include "sys/types.h"	/* for time_t */
 #include "time.h"	/* for struct tm */
 #include "stdlib.h"	/* for exit, malloc, atoi */
+#include "float.h"	/* for FLT_MAX and DBL_MAX */
+
+#ifndef ZDUMP_LO_YEAR
+#define ZDUMP_LO_YEAR	(-500)
+#endif /* !defined ZDUMP_LO_YEAR */
+
+#ifndef ZDUMP_HI_YEAR
+#define ZDUMP_HI_YEAR	2500
+#endif /* !defined ZDUMP_HI_YEAR */
 
 #ifndef MAX_STRING_LENGTH
 #define MAX_STRING_LENGTH	1024
@@ -61,9 +70,20 @@ static char	elsieid[] = "@(#)zdump.c	7.40";
 #endif /* !defined DAYSPERNYEAR */
 
 #ifndef isleap
-#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
+#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
 #endif /* !defined isleap */
 
+#ifndef isleap_sum
+/*
+** See tzfile.h for details on isleap_sum.
+*/
+#define isleap_sum(a, b)	isleap((a) % 400 + (b) % 400)
+#endif /* !defined isleap_sum */
+
+#define SECSPERDAY	((long) SECSPERHOUR * HOURSPERDAY)
+#define SECSPERNYEAR	(SECSPERDAY * DAYSPERNYEAR)
+#define SECSPERLYEAR	(SECSPERNYEAR + SECSPERDAY)
+
 #if HAVE_GETTEXT
 #include "locale.h"	/* for setlocale */
 #include "libintl.h"
@@ -115,18 +135,60 @@ static char	elsieid[] = "@(#)zdump.c	7.40";
 
 extern char **	environ;
 extern int	getopt P((int argc, char * const argv[],
-			  const char * options));
+			const char * options));
 extern char *	optarg;
 extern int	optind;
 extern char *	tzname[2];
 
+static time_t	absolute_min_time;
+static time_t	absolute_max_time;
+static size_t	longest;
+static char *	progname;
+
 static char *	abbr P((struct tm * tmp));
 static long	delta P((struct tm * newp, struct tm * oldp));
+static void	dumptime P((const struct tm * tmp));
 static time_t	hunt P((char * name, time_t lot, time_t	hit));
-static size_t	longest;
-static char *	progname;
+static void	setabsolutes P((void));
 static void	show P((char * zone, time_t t, int v));
-static void	dumptime P((const struct tm * tmp));
+static const char *	tformat P((void));
+static time_t	yeartot P((long y));
+
+#ifndef TYPECHECK
+#define my_localtime	localtime
+#else /* !defined TYPECHECK */
+static struct tm *
+my_localtime(tp)
+time_t *	tp;
+{
+	register struct tm *	tmp;
+
+	tmp = localtime(tp);
+	if (tp != NULL && tmp != NULL) {
+		struct tm	tm;
+		register time_t	t;
+
+		tm = *tmp;
+		t = mktime(&tm);
+		if (t - *tp >= 1 || *tp - t >= 1) {
+			(void) fflush(stdout);
+			(void) fprintf(stderr, "\n%s: ", progname);
+			(void) fprintf(stderr, tformat(), *tp);
+			(void) fprintf(stderr, " ->");
+			(void) fprintf(stderr, " sec %d", tmp->tm_sec);
+			(void) fprintf(stderr, " min %d", tmp->tm_min);
+			(void) fprintf(stderr, " hour %d", tmp->tm_hour);
+			(void) fprintf(stderr, " mday %d", tmp->tm_mday);
+			(void) fprintf(stderr, " mon %d", tmp->tm_mon);
+			(void) fprintf(stderr, " year %d", tmp->tm_year);
+			(void) fprintf(stderr, " -> ");
+			(void) fprintf(stderr, tformat(), t);
+			(void) fprintf(stderr, "\n");
+		}
+	}
+	return tmp;
+}
+#endif /* !defined TYPECHECK */
 
 int
 main(argc, argv)
@@ -136,18 +198,22 @@ char *	argv[];
 	register int		i;
 	register int		c;
 	register int		vflag;
-	register char *		cutoff;
-	register int		cutyear;
-	register long		cuttime;
-	char **			fakeenv;
+	register char *		cutarg;
+	register long		cutloyear = ZDUMP_LO_YEAR;
+	register long		cuthiyear = ZDUMP_HI_YEAR;
+	register time_t		cutlotime;
+	register time_t		cuthitime;
+	register char **	fakeenv;
 	time_t			now;
 	time_t			t;
 	time_t			newt;
-	time_t			hibit;
 	struct tm		tm;
 	struct tm		newtm;
+	register struct tm *	tmp;
+	register struct tm *	newtmp;
 
-	INITIALIZE(cuttime);
+	INITIALIZE(cutlotime);
+	INITIALIZE(cuthitime);
 #if HAVE_GETTEXT
 	(void) setlocale(LC_MESSAGES, "");
 #ifdef TZ_DOMAINDIR
@@ -162,39 +228,50 @@ char *	argv[];
 			(void) exit(EXIT_SUCCESS);
 		}
 	vflag = 0;
-	cutoff = NULL;
+	cutarg = NULL;
 	while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v')
 		if (c == 'v')
 			vflag = 1;
-		else	cutoff = optarg;
+		else	cutarg = optarg;
 	if ((c != EOF && c != -1) ||
 		(optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
 			(void) fprintf(stderr,
-_("%s: usage is %s [ --version ] [ -v ] [ -c cutoff ] zonename ...\n"),
-				argv[0], argv[0]);
+_("%s: usage is %s [ --version ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n"),
+				progname, progname);
 			(void) exit(EXIT_FAILURE);
 	}
-	if (cutoff != NULL) {
-		int	y;
-
-		cutyear = atoi(cutoff);
-		cuttime = 0;
-		for (y = EPOCH_YEAR; y < cutyear; ++y)
-			cuttime += DAYSPERNYEAR + isleap(y);
-		cuttime *= SECSPERHOUR * HOURSPERDAY;
+	if (vflag) {
+		if (cutarg != NULL) {
+			long	lo;
+			long	hi;
+			char	dummy;
+
+			if (sscanf(cutarg, "%ld%c", &hi, &dummy) == 1) {
+				cuthiyear = hi;
+			} else if (sscanf(cutarg, "%ld,%ld%c",
+				&lo, &hi, &dummy) == 2) {
+					cutloyear = lo;
+					cuthiyear = hi;
+			} else {
+(void) fprintf(stderr, _("%s: wild -c argument %s\n"),
+					progname, cutarg);
+				(void) exit(EXIT_FAILURE);
+			}
+		}
+		setabsolutes();
+		cutlotime = yeartot(cutloyear);
+		cuthitime = yeartot(cuthiyear);
 	}
 	(void) time(&now);
 	longest = 0;
 	for (i = optind; i < argc; ++i)
 		if (strlen(argv[i]) > longest)
 			longest = strlen(argv[i]);
-	for (hibit = 1; (hibit << 1) != 0; hibit <<= 1)
-		continue;
 	{
 		register int	from;
 		register int	to;
 
-		for (i = 0;  environ[i] != NULL;  ++i)
+		for (i = 0; environ[i] != NULL; ++i)
 			continue;
 		fakeenv = (char **) malloc((size_t) ((i + 2) *
 			sizeof *fakeenv));
@@ -219,58 +296,129 @@ _("%s: usage is %s [ --version ] [ -v ] [ -c cutoff ] zonename ...\n"),
 			show(argv[i], now, FALSE);
 			continue;
 		}
-		/*
-		** Get lowest value of t.
-		*/
-		t = hibit;
-		if (t > 0)		/* time_t is unsigned */
-			t = 0;
+		t = absolute_min_time;
 		show(argv[i], t, TRUE);
 		t += SECSPERHOUR * HOURSPERDAY;
 		show(argv[i], t, TRUE);
-		tm = *localtime(&t);
-		(void) strncpy(buf, abbr(&tm), (sizeof buf) - 1);
+		if (t < cutlotime)
+			t = cutlotime;
+		tmp = my_localtime(&t);
+		if (tmp != NULL) {
+			tm = *tmp;
+			(void) strncpy(buf, abbr(&tm), (sizeof buf) - 1);
+		}
 		for ( ; ; ) {
-			if (cutoff != NULL && t >= cuttime)
+			if (t >= cuthitime)
 				break;
 			newt = t + SECSPERHOUR * 12;
-			if (cutoff != NULL && newt >= cuttime)
+			if (newt >= cuthitime)
 				break;
 			if (newt <= t)
 				break;
-			newtm = *localtime(&newt);
-			if (delta(&newtm, &tm) != (newt - t) ||
+			newtmp = localtime(&newt);
+			if (newtmp != NULL)
+				newtm = *newtmp;
+			if ((tmp == NULL || newtmp == NULL) ?  (tmp != newtmp) :
+				(delta(&newtm, &tm) != (newt - t) ||
 				newtm.tm_isdst != tm.tm_isdst ||
-				strcmp(abbr(&newtm), buf) != 0) {
+				strcmp(abbr(&newtm), buf) != 0)) {
 					newt = hunt(argv[i], t, newt);
-					newtm = *localtime(&newt);
-					(void) strncpy(buf, abbr(&newtm),
-						(sizeof buf) - 1);
+					newtmp = localtime(&newt);
+					if (newtmp != NULL) {
+						newtm = *newtmp;
+						(void) strncpy(buf,
+							abbr(&newtm),
+							(sizeof buf) - 1);
+					}
 			}
 			t = newt;
 			tm = newtm;
+			tmp = newtmp;
 		}
-		/*
-		** Get highest value of t.
-		*/
-		t = ~((time_t) 0);
-		if (t < 0)		/* time_t is signed */
-			t &= ~hibit;
+		t = absolute_max_time;
 		t -= SECSPERHOUR * HOURSPERDAY;
 		show(argv[i], t, TRUE);
 		t += SECSPERHOUR * HOURSPERDAY;
 		show(argv[i], t, TRUE);
 	}
 	if (fflush(stdout) || ferror(stdout)) {
-		(void) fprintf(stderr, "%s: ", argv[0]);
+		(void) fprintf(stderr, "%s: ", progname);
 		(void) perror(_("Error writing standard output"));
 		(void) exit(EXIT_FAILURE);
 	}
 	exit(EXIT_SUCCESS);
+	/* If exit fails to exit... */
+	return EXIT_FAILURE;
+}
+
+static void
+setabsolutes()
+{
+	if (0.5 == (time_t) 0.5) {
+		/*
+		** time_t is floating.
+		*/
+		if (sizeof (time_t) == sizeof (float)) {
+			absolute_min_time = (time_t) -FLT_MAX;
+			absolute_max_time = (time_t) FLT_MAX;
+		} else if (sizeof (time_t) == sizeof (double)) {
+			absolute_min_time = (time_t) -DBL_MAX;
+			absolute_max_time = (time_t) DBL_MAX;
+		} else {
+			(void) fprintf(stderr,
+_("%s: use of -v on system with floating time_t other than float or double\n"),
+				progname);
+			(void) exit(EXIT_FAILURE);
+		}
+	} else if (0 > (time_t) -1) {
+		/*
+		** time_t is signed.
+		*/
+		register time_t	hibit;
 
-	/* gcc -Wall pacifier */
-	for ( ; ; )
-		continue;
+		for (hibit = 1; (hibit * 2) != 0; hibit *= 2)
+			continue;
+		absolute_min_time = hibit;
+		absolute_max_time = -(hibit + 1);
+	} else {
+		/*
+		** time_t is unsigned.
+		*/
+		absolute_min_time = 0;
+		absolute_max_time = absolute_min_time - 1;
+	}
+}
+
+static time_t
+yeartot(y)
+const long	y;
+{
+	register long	myy;
+	register long	seconds;
+	register time_t	t;
+
+	myy = EPOCH_YEAR;
+	t = 0;
+	while (myy != y) {
+		if (myy < y) {
+			seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR;
+			++myy;
+			if (t > absolute_max_time - seconds) {
+				t = absolute_max_time;
+				break;
+			}
+			t += seconds;
+		} else {
+			--myy;
+			seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR;
+			if (t < absolute_min_time + seconds) {
+				t = absolute_min_time;
+				break;
+			}
+			t -= seconds;
+		}
+	}
+	return t;
 }
 
 static time_t
@@ -279,25 +427,39 @@ char *	name;
 time_t	lot;
 time_t	hit;
 {
-	time_t		t;
-	struct tm	lotm;
-	struct tm	tm;
-	static char	loab[MAX_STRING_LENGTH];
-
-	lotm = *localtime(&lot);
-	(void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1);
-	while ((hit - lot) >= 2) {
-		t = lot / 2 + hit / 2;
+	time_t			t;
+	long			diff;
+	struct tm		lotm;
+	register struct tm *	lotmp;
+	struct tm		tm;
+	register struct tm *	tmp;
+	char			loab[MAX_STRING_LENGTH];
+
+	lotmp = my_localtime(&lot);
+	if (lotmp != NULL) {
+		lotm = *lotmp;
+		(void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1);
+	}
+	for ( ; ; ) {
+		diff = (long) (hit - lot);
+		if (diff < 2)
+			break;
+		t = lot;
+		t += diff / 2;
 		if (t <= lot)
 			++t;
 		else if (t >= hit)
 			--t;
-		tm = *localtime(&t);
-		if (delta(&tm, &lotm) == (t - lot) &&
+		tmp = my_localtime(&t);
+		if (tmp != NULL)
+			tm = *tmp;
+		if ((lotmp == NULL || tmp == NULL) ? (lotmp == tmp) :
+			(delta(&tm, &lotm) == (t - lot) &&
 			tm.tm_isdst == lotm.tm_isdst &&
-			strcmp(abbr(&tm), loab) == 0) {
+			strcmp(abbr(&tm), loab) == 0)) {
 				lot = t;
 				lotm = tm;
+				lotmp = tmp;
 		} else	hit = t;
 	}
 	show(name, lot, TRUE);
@@ -314,14 +476,14 @@ delta(newp, oldp)
 struct tm *	newp;
 struct tm *	oldp;
 {
-	long	result;
-	int	tmy;
+	register long	result;
+	register int	tmy;
 
 	if (newp->tm_year < oldp->tm_year)
 		return -delta(oldp, newp);
 	result = 0;
 	for (tmy = oldp->tm_year; tmy < newp->tm_year; ++tmy)
-		result += DAYSPERNYEAR + isleap(tmy + (long) TM_YEAR_BASE);
+		result += DAYSPERNYEAR + isleap_sum(tmy, TM_YEAR_BASE);
 	result += newp->tm_yday - oldp->tm_yday;
 	result *= HOURSPERDAY;
 	result += newp->tm_hour - oldp->tm_hour;
@@ -338,22 +500,30 @@ char *	zone;
 time_t	t;
 int	v;
 {
-	struct tm *	tmp;
+	register struct tm *	tmp;
 
 	(void) printf("%-*s  ", (int) longest, zone);
 	if (v) {
-		dumptime(gmtime(&t));
-		(void) printf(" UTC = ");
+		tmp = gmtime(&t);
+		if (tmp == NULL) {
+			(void) printf(tformat(), t);
+		} else {
+			dumptime(tmp);
+			(void) printf(" UTC");
+		}
+		(void) printf(" = ");
 	}
-	tmp = localtime(&t);
+	tmp = my_localtime(&t);
 	dumptime(tmp);
-	if (*abbr(tmp) != '\0')
-		(void) printf(" %s", abbr(tmp));
-	if (v) {
-		(void) printf(" isdst=%d", tmp->tm_isdst);
+	if (tmp != NULL) {
+		if (*abbr(tmp) != '\0')
+			(void) printf(" %s", abbr(tmp));
+		if (v) {
+			(void) printf(" isdst=%d", tmp->tm_isdst);
 #ifdef TM_GMTOFF
-		(void) printf(" gmtoff=%ld", tmp->TM_GMTOFF);
+			(void) printf(" gmtoff=%ld", tmp->TM_GMTOFF);
 #endif /* defined TM_GMTOFF */
+		}
 	}
 	(void) printf("\n");
 }
@@ -371,6 +541,33 @@ struct tm *	tmp;
 	return (result == NULL) ? &nada : result;
 }
 
+/*
+** The code below can fail on certain theoretical systems;
+** it works on all known real-world systems as of 2004-12-30.
+*/
+
+static const char *
+tformat()
+{
+	if (0.5 == (time_t) 0.5) {	/* floating */
+		if (sizeof (time_t) > sizeof (double))
+			return "%Lg";
+		return "%g";
+	}
+	if (0 > (time_t) -1) {		/* signed */
+		if (sizeof (time_t) > sizeof (long))
+			return "%lld";
+		if (sizeof (time_t) > sizeof (int))
+			return "%ld";
+		return "%d";
+	}
+	if (sizeof (time_t) > sizeof (unsigned long))
+		return "%llu";
+	if (sizeof (time_t) > sizeof (unsigned int))
+		return "%lu";
+	return "%u";
+}
+
 static void
 dumptime(timeptr)
 register const struct tm *	timeptr;
@@ -384,7 +581,13 @@ register const struct tm *	timeptr;
 	};
 	register const char *	wn;
 	register const char *	mn;
+	register int		lead;
+	register int		trail;
 
+	if (timeptr == NULL) {
+		(void) printf("NULL");
+		return;
+	}
 	/*
 	** The packaged versions of localtime and gmtime never put out-of-range
 	** values in tm_wday or tm_mon, but since this code might be compiled
@@ -398,9 +601,23 @@ register const struct tm *	timeptr;
 		(int) (sizeof mon_name / sizeof mon_name[0]))
 			mn = "???";
 	else		mn = mon_name[timeptr->tm_mon];
-	(void) printf("%.3s %.3s%3d %.2d:%.2d:%.2d %ld",
+	(void) printf("%.3s %.3s%3d %.2d:%.2d:%.2d ",
 		wn, mn,
 		timeptr->tm_mday, timeptr->tm_hour,
-		timeptr->tm_min, timeptr->tm_sec,
-		timeptr->tm_year + (long) TM_YEAR_BASE);
+		timeptr->tm_min, timeptr->tm_sec);
+#define DIVISOR	10
+	trail = timeptr->tm_year % DIVISOR + TM_YEAR_BASE % DIVISOR;
+	lead = timeptr->tm_year / DIVISOR + TM_YEAR_BASE / DIVISOR +
+		trail / DIVISOR;
+	trail %= DIVISOR;
+	if (trail < 0 && lead > 0) {
+		trail += DIVISOR;
+		--lead;
+	} else if (lead < 0 && trail > 0) {
+		trail -= DIVISOR;
+		++lead;
+	}
+	if (lead == 0)
+		(void) printf("%d", trail);
+	else	(void) printf("%d%d", lead, ((trail < 0) ? -trail : trail));
 }
diff --git a/timezone/zic.c b/timezone/zic.c
index 9bb8662..d855475 100644
--- a/timezone/zic.c
+++ b/timezone/zic.c
@@ -1,4 +1,10 @@
-static char	elsieid[] = "@(#)zic.c	7.116";
+static char	elsieid[] = "@(#)zic.c	7.118";
+
+/*
+** Regardless of the type of time_t, we do our work using this type.
+*/
+
+typedef int	zic_t;
 
 #include "private.h"
 #include "locale.h"
@@ -50,7 +56,7 @@ struct rule {
 	const char *	r_abbrvar;	/* variable part of abbreviation */
 
 	int		r_todo;		/* a rule to do (used in outzone) */
-	time_t		r_temp;		/* used in outzone */
+	zic_t		r_temp;		/* used in outzone */
 };
 
 /*
@@ -76,7 +82,7 @@ struct zone {
 	int		z_nrules;
 
 	struct rule	z_untilrule;
-	time_t		z_untiltime;
+	zic_t		z_untiltime;
 };
 
 extern int	getopt P((int argc, char * const argv[],
@@ -85,10 +91,10 @@ extern int	link P((const char * fromname, const char * toname));
 extern char *	optarg;
 extern int	optind;
 
-static void	addtt P((time_t starttime, int type));
+static void	addtt P((zic_t starttime, int type));
 static int	addtype P((long gmtoff, const char * abbr, int isdst,
 				int ttisstd, int ttisgmt));
-static void	leapadd P((time_t t, int positive, int rolling, int count));
+static void	leapadd P((zic_t t, int positive, int rolling, int count));
 static void	adjleap P((void));
 static void	associate P((void));
 static int	ciequal P((const char * ap, const char * bp));
@@ -121,13 +127,13 @@ static long	oadd P((long t1, long t2));
 static void	outzone P((const struct zone * zp, int ntzones));
 static void	puttzcode P((long code, FILE * fp));
 static int	rcomp P((const void * leftp, const void * rightp));
-static time_t	rpytime P((const struct rule * rp, int wantedy));
+static zic_t	rpytime P((const struct rule * rp, int wantedy));
 static void	rulesub P((struct rule * rp,
 			const char * loyearp, const char * hiyearp,
 			const char * typep, const char * monthp,
 			const char * dayp, const char * timep));
 static void	setboundaries P((void));
-static time_t	tadd P((time_t t1, long t2));
+static zic_t	tadd P((zic_t t1, long t2));
 static void	usage P((void));
 static void	writezone P((const char * name));
 static int	yearistype P((int year, const char * type));
@@ -141,10 +147,10 @@ static int		errors;
 static const char *	filename;
 static int		leapcnt;
 static int		linenum;
-static time_t		max_time;
+static zic_t		max_time;
 static int		max_year;
 static int		max_year_representable;
-static time_t		min_time;
+static zic_t		min_time;
 static int		min_year;
 static int		min_year_representable;
 static int		noise;
@@ -334,7 +340,7 @@ static const int	len_years[2] = {
 };
 
 static struct attype {
-	time_t		at;
+	zic_t		at;
 	unsigned char	type;
 }			attypes[TZ_MAX_TIMES];
 static long		gmtoffs[TZ_MAX_TYPES];
@@ -343,7 +349,7 @@ static unsigned char	abbrinds[TZ_MAX_TYPES];
 static char		ttisstds[TZ_MAX_TYPES];
 static char		ttisgmts[TZ_MAX_TYPES];
 static char		chars[TZ_MAX_CHARS];
-static time_t		trans[TZ_MAX_LEAPS];
+static zic_t		trans[TZ_MAX_LEAPS];
 static long		corr[TZ_MAX_LEAPS];
 static char		roll[TZ_MAX_LEAPS];
 
@@ -629,7 +635,7 @@ const char * const	tofile;
 		        register char * symlinkcontents = NULL;
 		        while ((s = strchr(s+1, '/')) != NULL)
 			        symlinkcontents = ecatalloc(symlinkcontents, "../");
-			symlinkcontents = ecatalloc(symlinkcontents, fromname);
+			symlinkcontents = ecatalloc(symlinkcontents, fromfile);
 
 			result = unlink(toname);
 			if (result != 0 && errno != ENOENT) {
@@ -676,25 +682,36 @@ warning(_("hard link failed, symbolic link used"));
 */
 
 #define MAX_BITS_IN_FILE	32
-#define TIME_T_BITS_IN_FILE	((TYPE_BIT(time_t) < MAX_BITS_IN_FILE) ? TYPE_BIT(time_t) : MAX_BITS_IN_FILE)
+#define TIME_T_BITS_IN_FILE	((TYPE_BIT(zic_t) < MAX_BITS_IN_FILE) ? \
+					TYPE_BIT(zic_t) : MAX_BITS_IN_FILE)
 
 static void
 setboundaries P((void))
 {
-	if (TYPE_SIGNED(time_t)) {
-		min_time = ~ (time_t) 0;
-		min_time <<= TIME_T_BITS_IN_FILE - 1;
-		max_time = ~ (time_t) 0 - min_time;
+	register int	i;
+
+	if (TYPE_SIGNED(zic_t)) {
+		min_time = -1;
+		for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
+			min_time *= 2;
+		max_time = -(min_time + 1);
 		if (sflag)
 			min_time = 0;
 	} else {
 		min_time = 0;
 		max_time = 2 - sflag;
-		max_time <<= TIME_T_BITS_IN_FILE - 1;
+		for (i = 0; i < TIME_T_BITS_IN_FILE - 1; ++i)
+			max_time *= 2;
 		--max_time;
 	}
-	min_year = TM_YEAR_BASE + gmtime(&min_time)->tm_year;
-	max_year = TM_YEAR_BASE + gmtime(&max_time)->tm_year;
+	{
+		time_t	t;
+
+		t = (time_t) min_time;
+		min_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
+		t = (time_t) max_time;
+		max_year = TM_YEAR_BASE + gmtime(&t)->tm_year;
+	}
 	min_year_representable = min_year;
 	max_year_representable = max_year;
 }
@@ -1120,7 +1137,7 @@ const int		nfields;
 	register int			i, j;
 	int				year, month, day;
 	long				dayoff, tod;
-	time_t				t;
+	zic_t				t;
 
 	if (nfields != LEAP_FIELDS) {
 		error(_("wrong number of fields on Leap line"));
@@ -1164,7 +1181,7 @@ const int		nfields;
 			return;
 	}
 	dayoff = oadd(dayoff, eitol(day - 1));
-	if (dayoff < 0 && !TYPE_SIGNED(time_t)) {
+	if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
 		error(_("time before zero"));
 		return;
 	}
@@ -1176,7 +1193,7 @@ const int		nfields;
 		error(_("time too large"));
 		return;
 	}
-	t = (time_t) dayoff * SECSPERDAY;
+	t = (zic_t) dayoff * SECSPERDAY;
 	tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
 	cp = fields[LP_CORR];
 	{
@@ -1438,7 +1455,7 @@ const char * const	name;
 	register int		i, j;
 	static char *		fullname;
 	static struct tzhead	tzh;
-	time_t			ats[TZ_MAX_TIMES];
+	zic_t			ats[TZ_MAX_TIMES];
 	unsigned char		types[TZ_MAX_TIMES];
 
 	/*
@@ -1603,7 +1620,7 @@ const int			zonecount;
 	register struct rule *		rp;
 	register int			i, j;
 	register int			usestart, useuntil;
-	register time_t			starttime, untiltime;
+	register zic_t			starttime, untiltime;
 	register long			gmtoff;
 	register long			stdoff;
 	register int			year;
@@ -1672,7 +1689,7 @@ const int			zonecount;
 			}
 			for ( ; ; ) {
 				register int	k;
-				register time_t	jtime, ktime;
+				register zic_t	jtime, ktime;
 				register long	offset;
 				char		buf[BUFSIZ];
 
@@ -1784,7 +1801,7 @@ error(_("can't determine time zone abbreviation to use just after until time"));
 
 static void
 addtt(starttime, type)
-const time_t	starttime;
+const zic_t	starttime;
 int		type;
 {
 	if (starttime <= min_time ||
@@ -1868,7 +1885,7 @@ const int		ttisgmt;
 
 static void
 leapadd(t, positive, rolling, count)
-const time_t	t;
+const zic_t	t;
 const int	positive;
 const int	rolling;
 int		count;
@@ -2056,12 +2073,12 @@ const long	t2;
 	return t;
 }
 
-static time_t
+static zic_t
 tadd(t1, t2)
-const time_t	t1;
+const zic_t	t1;
 const long	t2;
 {
-	register time_t	t;
+	register zic_t	t;
 
 	if (t1 == max_time && t2 > 0)
 		return max_time;
@@ -2080,14 +2097,14 @@ const long	t2;
 ** 1970, 00:00 LOCAL time - in that year that the rule refers to.
 */
 
-static time_t
+static zic_t
 rpytime(rp, wantedy)
 register const struct rule * const	rp;
 register const int			wantedy;
 {
 	register int	y, m, i;
 	register long	dayoff;			/* with a nod to Margaret O. */
-	register time_t	t;
+	register zic_t	t;
 
 	if (wantedy == INT_MIN)
 		return min_time;
@@ -2154,15 +2171,13 @@ register const int			wantedy;
 				warning(_("rule goes past start/end of month--will not work with pre-2004 versions of zic"));
 		}
 	}
-	if (dayoff < 0 && !TYPE_SIGNED(time_t))
+	if (dayoff < 0 && !TYPE_SIGNED(zic_t))
 		return min_time;
 	if (dayoff < min_time / SECSPERDAY)
 		return min_time;
 	if (dayoff > max_time / SECSPERDAY)
 		return max_time;
-	t = (time_t) dayoff * SECSPERDAY;
-	if (t > 0 && max_time - t < rp->r_tod)
-		return max_time;
+	t = (zic_t) dayoff * SECSPERDAY;
 	return tadd(t, rp->r_tod);
 }