* time/tzfile.c (__tzfile_read): Extend to handle new file format

	on machines with 64-bit time_t.

	* timezone/checktab.awk: Update from tzcode2006o.
	* timezone/ialloc.c: Likewise.
	* timezone/private.h: Likewise.
	* timezone/scheck.: Likewise.
	* timezone/tzfile.h: Likewise.
	* timezone/tzselect.ksh: Likewise.
	* timezone/zdump.c: Likewise.
	* timezone/zic.c: Likewise.

10 files changed, 756 insertions, 240 deletions

diff --git a/ChangeLog b/ChangeLog
index 71207b92a5..72f7d5c11f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,17 @@
 2006-11-10  Ulrich Drepper  <drepper@redhat.com>
 
+	* time/tzfile.c (__tzfile_read): Extend to handle new file format
+	on machines with 64-bit time_t.
+
+	* timezone/checktab.awk: Update from tzcode2006o.
+	* timezone/ialloc.c: Likewise.
+	* timezone/private.h: Likewise.
+	* timezone/scheck.: Likewise.
+	* timezone/tzfile.h: Likewise.
+	* timezone/tzselect.ksh: Likewise.
+	* timezone/zdump.c: Likewise.
+	* timezone/zic.c: Likewise.
+
 	[BZ #3483]
 	* elf/ldconfig.c (main): Call setlocale and textdomain.
 	Patch mostly by Benno Schulenberg <bensberg@justemail.net>.
diff --git a/time/tzfile.c b/time/tzfile.c
index e95fd55f36..295f0aa3cb 100644
--- a/time/tzfile.c
+++ b/time/tzfile.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1991-1993,1995-2001,2003,2004 Free Software Foundation, Inc.
+/* Copyright (C) 1991-1993,1995-2001,2003,2004,2006
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -71,24 +72,34 @@ static inline int
 __attribute ((always_inline))
 decode (const void *ptr)
 {
-  if ((BYTE_ORDER == BIG_ENDIAN) && sizeof (int) == 4)
+  if (BYTE_ORDER == BIG_ENDIAN && sizeof (int) == 4)
     return *(const int *) ptr;
-  else if (BYTE_ORDER == LITTLE_ENDIAN && sizeof (int) == 4)
+  if (sizeof (int) == 4)
     return bswap_32 (*(const int *) ptr);
-  else
-    {
-      const unsigned char *p = ptr;
-      int result = *p & (1 << (CHAR_BIT - 1)) ? ~0 : 0;
 
-      result = (result << 8) | *p++;
-      result = (result << 8) | *p++;
-      result = (result << 8) | *p++;
-      result = (result << 8) | *p++;
+  const unsigned char *p = ptr;
+  int result = *p & (1 << (CHAR_BIT - 1)) ? ~0 : 0;
 
-      return result;
-    }
+  result = (result << 8) | *p++;
+  result = (result << 8) | *p++;
+  result = (result << 8) | *p++;
+  result = (result << 8) | *p++;
+
+  return result;
 }
 
+
+static inline int64_t
+__attribute ((always_inline))
+decode64 (const void *ptr)
+{
+  if ((BYTE_ORDER == BIG_ENDIAN))
+    return *(const int64_t *) ptr;
+
+  return bswap_64 (*(const int64_t *) ptr);
+}
+
+
 void
 __tzfile_read (const char *file, size_t extra, char **extrap)
 {
@@ -102,6 +113,10 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
   size_t types_idx;
   size_t leaps_idx;
   int was_using_tzfile = __use_tzfile;
+  int trans_width = 4;
+
+  if (sizeof (time_t) != 4 && sizeof (time_t) != 8)
+    abort ();
 
   __use_tzfile = 0;
 
@@ -185,8 +200,10 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
   /* No threads reading this stream.  */
   __fsetlocking (f, FSETLOCKING_BYCALLER);
 
+ read_again:
   if (__builtin_expect (fread_unlocked ((void *) &tzhead, sizeof (tzhead),
-					1, f) != 1, 0))
+					1, f) != 1, 0)
+      || memcmp (tzhead.tzh_magic, TZ_MAGIC, sizeof (tzhead.tzh_magic)) != 0)
     goto lose;
 
   num_transitions = (size_t) decode (tzhead.tzh_timecnt);
@@ -196,6 +213,26 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
   num_isstd = (size_t) decode (tzhead.tzh_ttisstdcnt);
   num_isgmt = (size_t) decode (tzhead.tzh_ttisgmtcnt);
 
+  /* For platforms with 64-bit time_t we use the new format if available.  */
+  if (sizeof (time_t) == 8 && trans_width == 4
+      && tzhead.tzh_version[0] != '\0')
+    {
+      /* We use the 8-byte format.  */
+      trans_width = 8;
+
+      /* Position the stream before the second header.  */
+      size_t to_skip = (num_transitions * (4 + 1)
+			+ num_types * 6
+			+ chars
+			+ num_leaps * 8
+			+ num_isstd
+			+ num_isgmt);
+      if (fseek (f, to_skip, SEEK_CUR) != 0)
+	goto lose;
+
+      goto read_again;
+    }
+
   total_size = num_transitions * (sizeof (time_t) + 1);
   total_size = ((total_size + __alignof__ (struct ttinfo) - 1)
 		& ~(__alignof__ (struct ttinfo) - 1));
@@ -205,10 +242,10 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
 		& ~(__alignof__ (struct leap) - 1));
   leaps_idx = total_size;
   total_size += num_leaps * sizeof (struct leap);
-  /* This is for the extra memory required by the caller.  */
-  total_size += extra;
 
-  transitions = (time_t *) malloc (total_size);
+  /* Allocate enough memory including the extra block requested by the
+     caller.  */
+  transitions = (time_t *) malloc (total_size + extra);
   if (transitions == NULL)
     goto lose;
 
@@ -220,14 +257,11 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
   if (extra > 0)
     *extrap = (char *) &leaps[num_leaps];
 
-  if (sizeof (time_t) < 4)
-    abort ();
-
-  if (sizeof (time_t) == 4)
+  if (sizeof (time_t) == 4 || trans_width == 8)
     {
-      if (__builtin_expect (fread_unlocked (transitions, 1,
-					    (4 + 1) * num_transitions, f)
-			    != (4 + 1) * num_transitions, 0))
+      if (__builtin_expect (fread_unlocked (transitions, trans_width + 1,
+					    num_transitions, f)
+			    != num_transitions, 0))
 	goto lose;
     }
   else
@@ -245,7 +279,7 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
     if (__builtin_expect (type_idxs[i] >= num_types, 0))
       goto lose;
 
-  if (BYTE_ORDER != BIG_ENDIAN || sizeof (time_t) != 4)
+  if (BYTE_ORDER != BIG_ENDIAN || (sizeof (time_t) == 8 && trans_width == 4))
     {
       /* Decode the transition times, stored as 4-byte integers in
 	 network (big-endian) byte order.  We work from the end of
@@ -255,6 +289,13 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
       while (i-- > 0)
 	transitions[i] = decode ((char *) transitions + i * 4);
     }
+  else if (BYTE_ORDER != BIG_ENDIAN && sizeof (time_t) == 8)
+    {
+      /* Decode the transition times, stored as 8-byte integers in
+	 network (big-endian) byte order.  */
+      for (i = 0; i < num_transitions; ++i)
+	transitions[i] = decode64 ((char *) transitions + i * 8);
+    }
 
   for (i = 0; i < num_types; ++i)
     {
@@ -280,13 +321,16 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
 
   for (i = 0; i < num_leaps; ++i)
     {
-      unsigned char x[4];
-      if (__builtin_expect (fread_unlocked (x, 1, sizeof (x), f) != sizeof (x),
-			    0))
+      unsigned char x[8];
+      if (__builtin_expect (fread_unlocked (x, 1, trans_width, f)
+			    != trans_width, 0))
 	goto lose;
-      leaps[i].transition = (time_t) decode (x);
-      if (__builtin_expect (fread_unlocked (x, 1, sizeof (x), f) != sizeof (x),
-			    0))
+      if (sizeof (time_t) == 4 || trans_width == 4)
+	leaps[i].transition = (time_t) decode (x);
+      else
+	leaps[i].transition = (time_t) decode64 (x);
+
+      if (__builtin_expect (fread_unlocked (x, 1, 4, f) != 4, 0))
 	goto lose;
       leaps[i].change = (long int) decode (x);
     }
@@ -311,6 +355,12 @@ __tzfile_read (const char *file, size_t extra, char **extrap)
   while (i < num_types)
     types[i++].isgmt = 0;
 
+  /* XXX When a version 2 file is available it can contain a POSIX TZ-style
+     formatted string which specifies how times past the last one specified
+     are supposed to be handled.  We might want to handle this at some
+     point.  But it might be overhead since most/all? files have an
+     open-ended last entry.  */
+
   fclose (f);
 
   /* First "register" all timezone names.  */
diff --git a/timezone/checktab.awk b/timezone/checktab.awk
index 6d532141e6..80ad7d5701 100644
--- a/timezone/checktab.awk
+++ b/timezone/checktab.awk
@@ -1,6 +1,6 @@
 # Check tz tables for consistency.
 
-# @(#)checktab.awk	1.7
+# @(#)checktab.awk	8.1
 
 # Contributed by Paul Eggert.
 
diff --git a/timezone/ialloc.c b/timezone/ialloc.c
index 8a0c701578..1fc2035f45 100644
--- a/timezone/ialloc.c
+++ b/timezone/ialloc.c
@@ -1,6 +1,11 @@
+/*
+** This file is in the public domain, so clarified as of
+** 2006-07-17 by Arthur David Olson.
+*/
+
 #ifndef lint
 #ifndef NOID
-static char	elsieid[] = "@(#)ialloc.c	8.29";
+static char	elsieid[] = "@(#)ialloc.c	8.30";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
diff --git a/timezone/private.h b/timezone/private.h
index d9f232c8e3..2837b70c10 100644
--- a/timezone/private.h
+++ b/timezone/private.h
@@ -21,7 +21,7 @@
 
 #ifndef lint
 #ifndef NOID
-static char	privatehid[] = "@(#)private.h	7.55";
+static char	privatehid[] = "@(#)private.h	8.2";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
@@ -89,7 +89,7 @@ static char	privatehid[] = "@(#)private.h	7.55";
 #include "stdio.h"
 #include "errno.h"
 #include "string.h"
-#include "limits.h"	/* for CHAR_BIT */
+#include "limits.h"	/* for CHAR_BIT et al. */
 #include "time.h"
 #include "stdlib.h"
 
@@ -125,20 +125,51 @@ static char	privatehid[] = "@(#)private.h	7.55";
 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
 
 /*
+** Define HAVE_STDINT_H's default value here, rather than at the
+** start, since __GLIBC__'s value depends on previously-included
+** files.
+** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
+*/
+#ifndef HAVE_STDINT_H
+#define HAVE_STDINT_H \
+	(199901 <= __STDC_VERSION__ || \
+	2 < (__GLIBC__ + (0 < __GLIBC_MINOR__)))
+#endif /* !defined HAVE_STDINT_H */
+
+#if HAVE_STDINT_H
+#include "stdint.h"
+#endif /* !HAVE_STDINT_H */
+
+#ifndef INT_FAST64_MAX
+/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX.  */
+#if defined LLONG_MAX || defined __LONG_LONG_MAX__
+typedef long long	int_fast64_t;
+#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
+#if (LONG_MAX >> 31) < 0xffffffff
+Please use a compiler that supports a 64-bit integer type (or wider);
+you may need to compile with "-DHAVE_STDINT_H".
+#endif /* (LONG_MAX >> 31) < 0xffffffff */
+typedef long		int_fast64_t;
+#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
+#endif /* !defined INT_FAST64_MAX */
+
+#ifndef INT32_MAX
+#define INT32_MAX 0x7fffffff
+#endif /* !defined INT32_MAX */
+#ifndef INT32_MIN
+#define INT32_MIN (-1 - INT32_MAX)
+#endif /* !defined INT32_MIN */
+
+/*
 ** Workarounds for compilers/systems.
 */
 
 /*
-** SunOS 4.1.1 cc lacks prototypes.
+** If your compiler lacks prototypes, "#define P(x) ()".
 */
 
 #ifndef P
-#ifdef __STDC__
 #define P(x)	x
-#endif /* defined __STDC__ */
-#ifndef __STDC__
-#define P(x)	()
-#endif /* !defined __STDC__ */
 #endif /* !defined P */
 
 /*
@@ -211,14 +242,14 @@ 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));
-char *	imalloc P((int n));
-void *	irealloc P((void * pointer, int size));
-void	icfree P((char * pointer));
-void	ifree P((char * pointer));
-const char *scheck P((const char *string, const char *format));
+char *		icalloc P((int nelem, int elsize));
+char *		icatalloc P((char * old, const char * new));
+char *		icpyalloc P((const char * string));
+char *		imalloc P((int n));
+void *		irealloc P((void * pointer, int size));
+void		icfree P((char * pointer));
+void		ifree P((char * pointer));
+const char *	scheck P((const char * string, const char * format));
 
 /*
 ** Finally, some convenience items.
@@ -310,6 +341,26 @@ char *asctime_r P((struct tm const *, char *));
 char *ctime_r P((time_t const *, char *));
 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
 
+#ifndef YEARSPERREPEAT
+#define YEARSPERREPEAT		400	/* years before a Gregorian repeat */
+#endif /* !defined YEARSPERREPEAT */
+
+/*
+** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
+*/
+
+#ifndef AVGSECSPERYEAR
+#define AVGSECSPERYEAR		31556952L
+#endif /* !defined AVGSECSPERYEAR */
+
+#ifndef SECSPERREPEAT
+#define SECSPERREPEAT		((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
+#endif /* !defined SECSPERREPEAT */
+ 
+#ifndef SECSPERREPEAT_BITS
+#define SECSPERREPEAT_BITS	34	/* ceil(log2(SECSPERREPEAT)) */
+#endif /* !defined SECSPERREPEAT_BITS */
+
 /*
 ** UNIX was a registered trademark of The Open Group in 2003.
 */
diff --git a/timezone/scheck.c b/timezone/scheck.c
index bc156379a0..74d9b07c14 100644
--- a/timezone/scheck.c
+++ b/timezone/scheck.c
@@ -1,6 +1,11 @@
+/*
+** This file is in the public domain, so clarified as of
+** 2006-07-17 by Arthur David Olson.
+*/
+
 #ifndef lint
 #ifndef NOID
-static char	elsieid[] = "@(#)scheck.c	8.17";
+static char	elsieid[] = "@(#)scheck.c	8.19";
 #endif /* !defined lint */
 #endif /* !defined NOID */
 
diff --git a/timezone/tzfile.h b/timezone/tzfile.h
index fb6ca9880f..3a9eee305a 100644
--- a/timezone/tzfile.h
+++ b/timezone/tzfile.h
@@ -21,7 +21,7 @@
 
 #ifndef lint
 #ifndef NOID
-static char	tzfilehid[] = "@(#)tzfile.h	7.18";
+static char	tzfilehid[] = "@(#)tzfile.h	8.1";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
@@ -49,7 +49,8 @@ static char	tzfilehid[] = "@(#)tzfile.h	7.18";
 
 struct tzhead {
 	char	tzh_magic[4];		/* TZ_MAGIC */
-	char	tzh_reserved[16];	/* reserved for future use */
+	char	tzh_version[1];		/* '\0' or '2' as of 2005 */
+	char	tzh_reserved[15];	/* reserved--must be zero */
 	char	tzh_ttisgmtcnt[4];	/* coded number of trans. time flags */
 	char	tzh_ttisstdcnt[4];	/* coded number of trans. time flags */
 	char	tzh_leapcnt[4];		/* coded number of leap seconds */
@@ -84,18 +85,22 @@ struct tzhead {
 */
 
 /*
+** If tzh_version is '2' or greater, the above is followed by a second instance
+** of tzhead and a second instance of the data in which each coded transition
+** time uses 8 rather than 4 chars,
+** then a POSIX-TZ-environment-variable-style string for use in handling
+** instants after the last transition time stored in the file
+** (with nothing between the newlines if there is no POSIX representation for
+** such instants).
+*/
+
+/*
 ** In the current implementation, "tzset()" refuses to deal with files that
 ** exceed any of the limits below.
 */
 
 #ifndef TZ_MAX_TIMES
-/*
-** The TZ_MAX_TIMES value below is enough to handle a bit more than a
-** year's worth of solar time (corrected daily to the nearest second) or
-** 138 years of Pacific Presidential Election time
-** (where there are three time zone transitions every fourth year).
-*/
-#define TZ_MAX_TIMES	370
+#define TZ_MAX_TIMES	1200
 #endif /* !defined TZ_MAX_TIMES */
 
 #ifndef TZ_MAX_TYPES
diff --git a/timezone/tzselect.ksh b/timezone/tzselect.ksh
index f6e28bfdab..b99af8273b 100644
--- a/timezone/tzselect.ksh
+++ b/timezone/tzselect.ksh
@@ -1,6 +1,6 @@
 #! @KSH@
 
-# '@(#)tzselect.ksh	1.8'
+# '@(#)tzselect.ksh	8.1'
 
 # Ask the user about the time zone, and output the resulting TZ value to stdout.
 # Interact with the user via stderr and stdin.
diff --git a/timezone/zdump.c b/timezone/zdump.c
index d525da1bae..b5dd09b861 100644
--- a/timezone/zdump.c
+++ b/timezone/zdump.c
@@ -1,4 +1,4 @@
-static char	elsieid[] = "@(#)zdump.c	7.74";
+static char	elsieid[] = "@(#)zdump.c	8.2";
 
 /*
 ** This code has been made independent of the rest of the time
@@ -15,7 +15,7 @@ static char	elsieid[] = "@(#)zdump.c	7.74";
 #include "ctype.h"	/* for isalpha et al. */
 #ifndef isascii
 #define isascii(x) 1
-#endif
+#endif /* !defined isascii */
 
 #ifndef ZDUMP_LO_YEAR
 #define ZDUMP_LO_YEAR	(-500)
@@ -130,11 +130,7 @@ static char	elsieid[] = "@(#)zdump.c	7.74";
 #endif /* !defined TZ_DOMAIN */
 
 #ifndef P
-#ifdef __STDC__
 #define P(x)	x
-#else /* !defined __STDC__ */
-#define P(x)	()
-#endif /* !defined __STDC__ */
 #endif /* !defined P */
 
 extern char **	environ;
@@ -389,7 +385,7 @@ _("%s: usage is %s [ --version ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n"),
 	}
 	if (fflush(stdout) || ferror(stdout)) {
 		(void) fprintf(stderr, "%s: ", progname);
-		(void) perror(_("Error writing to standard output"));
+		(void) perror(_("Error writing standard output"));
 		exit(EXIT_FAILURE);
 	}
 	exit(EXIT_SUCCESS);
@@ -418,14 +414,21 @@ _("%s: use of -v on system with floating time_t other than float or double\n"),
 		}
 	} else if (0 > (time_t) -1) {
 		/*
-		** time_t is signed.
+		** time_t is signed.  Assume overflow wraps around.
 		*/
-		register time_t	hibit;
+		time_t t = 0;
+		time_t t1 = 1;
 
-		for (hibit = 1; (hibit * 2) != 0; hibit *= 2)
-			continue;
-		absolute_min_time = hibit;
-		absolute_max_time = -(hibit + 1);
+		while (t < t1) {
+			t = t1;
+			t1 = 2 * t1 + 1;
+		}
+		  
+		absolute_max_time = t;
+		t = -t;
+		absolute_min_time = t - 1;
+		if (t < absolute_min_time)
+			absolute_min_time = t;
 	} else {
 		/*
 		** time_t is unsigned.
@@ -468,10 +471,7 @@ const long	y;
 }
 
 static time_t
-hunt(name, lot, hit)
-char *	name;
-time_t	lot;
-time_t	hit;
+hunt(char *name, time_t lot, time_t hit)
 {
 	time_t			t;
 	long			diff;
@@ -541,10 +541,7 @@ struct tm *	oldp;
 }
 
 static void
-show(zone, t, v)
-char *	zone;
-time_t	t;
-int	v;
+show(char *zone, time_t t, int v)
 {
 	register struct tm *	tmp;
 
diff --git a/timezone/zic.c b/timezone/zic.c
index acb76fb3ba..f7393ea7ba 100644
--- a/timezone/zic.c
+++ b/timezone/zic.c
@@ -1,15 +1,18 @@
-static char	elsieid[] = "@(#)zic.c	7.128";
-
 /*
-** Regardless of the type of time_t, we do our work using this type.
+** This file is in the public domain, so clarified as of
+** 2006-07-17 by Arthur David Olson.
 */
 
-typedef int	zic_t;
+static char	elsieid[] = "@(#)zic.c	8.7";
 
 #include "private.h"
 #include "locale.h"
 #include "tzfile.h"
 
+#define	ZIC_VERSION	'2'
+
+typedef int_fast64_t	zic_t;
+
 #ifndef ZIC_MAX_ABBR_LEN_WO_WARN
 #define ZIC_MAX_ABBR_LEN_WO_WARN	6
 #endif /* !defined ZIC_MAX_ABBR_LEN_WO_WARN */
@@ -36,6 +39,11 @@ typedef int	zic_t;
 #define isascii(x) 1
 #endif
 
+#define OFFSET_STRLEN_MAXIMUM	(7 + INT_STRLEN_MAXIMUM(long))
+#define RULE_STRLEN_MAXIMUM	8	/* "Mdd.dd.d" */
+
+#define end(cp)	(strchr((cp), '\0'))
+
 struct rule {
 	const char *	r_filename;
 	int		r_linenum;
@@ -44,6 +52,8 @@ struct rule {
 	int		r_loyear;	/* for example, 1986 */
 	int		r_hiyear;	/* for example, 1986 */
 	const char *	r_yrtype;
+	int		r_lowasnum;
+	int		r_hiwasnum;
 
 	int		r_month;	/* 0..11 */
 
@@ -103,9 +113,10 @@ static void	adjleap P((void));
 static void	associate P((void));
 static int	ciequal P((const char * ap, const char * bp));
 static void	convert P((long val, char * buf));
+static void	convert64 P((zic_t val, char * buf));
 static void	dolink P((const char * fromfile, const char * tofile));
 static void	doabbr P((char * abbr, const char * format,
-			const char * letters, int isdst));
+			const char * letters, int isdst, int doquotes));
 static void	eat P((const char * name, int num));
 static void	eats P((const char * name, int num,
 			const char * rname, int rnum));
@@ -121,6 +132,7 @@ static void	inrule P((char ** fields, int nfields));
 static int	inzcont P((char ** fields, int nfields));
 static int	inzone P((char ** fields, int nfields));
 static int	inzsub P((char ** fields, int nfields, int iscont));
+static int	is32 P((zic_t x));
 static int	itsabbr P((const char * abbr, const char * word));
 static int	itsdir P((const char * name));
 static int	lowerit P((int c));
@@ -130,16 +142,22 @@ static void	newabbr P((const char * abbr));
 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 void	puttzcode64 P((zic_t code, FILE * fp));
 static int	rcomp P((const void * leftp, const void * rightp));
 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 int 	stringoffset P((char * result, long offset));
+static int	stringrule P((char * result, const struct rule * rp,
+			long dstoff, long gmtoff));
+static void 	stringzone P((char * result,
+			const struct zone * zp, int ntzones));
 static void	setboundaries P((void));
 static zic_t	tadd P((zic_t t1, long t2));
 static void	usage P((void));
-static void	writezone P((const char * name));
+static void	writezo