Update tzcode to 2012i.

10 files changed, 224 insertions, 463 deletions

diff --git a/timezone/README b/timezone/README
index 05bfe91a28..cb3d2cdb69 100644
--- a/timezone/README
+++ b/timezone/README
@@ -1,7 +1,10 @@
 The files
 	zic.c zdump.c ialloc.c scheck.c tzfile.h
 	private.h tzselect.ksh checktab.awk
-come from the tzcode package by Arthur David Olson et.al.
+come from the tzcode package by Arthur David Olson et.al.; the file
+	version.h
+has the contents that would be generated by that package's Makefile,
+and tzselect.ksh has been modified for use in glibc.
 
 The files
 	africa antarctica asia australasia europe
@@ -13,5 +16,5 @@ come from the tzdata package by Arthur David Olson et.al.
 Please check the ChangeLog files in the top level directory for the
 version of the tzcode and tzdata packages.
 
-These packages may be found at ftp://munnari.oz.au/pub/.  Commentary
+These packages may be found at ftp://ftp.iana.org/tz/releases/.  Commentary
 should be addressed to tz@iana.org.
diff --git a/timezone/checktab.awk b/timezone/checktab.awk
index 80ad7d5701..c88b12f1ba 100644
--- a/timezone/checktab.awk
+++ b/timezone/checktab.awk
@@ -1,7 +1,5 @@
 # Check tz tables for consistency.
 
-# @(#)checktab.awk	8.1
-
 # Contributed by Paul Eggert.
 
 BEGIN {
diff --git a/timezone/ialloc.c b/timezone/ialloc.c
index 1fc2035f45..b6f018897b 100644
--- a/timezone/ialloc.c
+++ b/timezone/ialloc.c
@@ -3,49 +3,12 @@
 ** 2006-07-17 by Arthur David Olson.
 */
 
-#ifndef lint
-#ifndef NOID
-static char	elsieid[] = "@(#)ialloc.c	8.30";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
 /*LINTLIBRARY*/
 
 #include "private.h"
 
-#define nonzero(n)	(((n) == 0) ? 1 : (n))
-
-char *
-imalloc(n)
-const int	n;
-{
-	return malloc((size_t) nonzero(n));
-}
-
 char *
-icalloc(nelem, elsize)
-int	nelem;
-int	elsize;
-{
-	if (nelem == 0 || elsize == 0)
-		nelem = elsize = 1;
-	return calloc((size_t) nelem, (size_t) elsize);
-}
-
-void *
-irealloc(pointer, size)
-void * const	pointer;
-const int	size;
-{
-	if (pointer == NULL)
-		return imalloc(size);
-	return realloc((void *) pointer, (size_t) nonzero(size));
-}
-
-char *
-icatalloc(old, new)
-char * const		old;
-const char * const	new;
+icatalloc(char *const old, const char *const new)
 {
 	register char *	result;
 	register int	oldsize, newsize;
@@ -56,31 +19,14 @@ const char * const	new;
 	else if (newsize == 0)
 		return old;
 	else	oldsize = strlen(old);
-	if ((result = irealloc(old, oldsize + newsize + 1)) != NULL)
+	if ((result = realloc(old, oldsize + newsize + 1)) != NULL)
 		if (new != NULL)
 			(void) strcpy(result + oldsize, new);
 	return result;
 }
 
 char *
-icpyalloc(string)
-const char * const	string;
-{
-	return icatalloc((char *) NULL, string);
-}
-
-void
-ifree(p)
-char * const	p;
-{
-	if (p != NULL)
-		(void) free(p);
-}
-
-void
-icfree(p)
-char * const	p;
+icpyalloc(const char *const string)
 {
-	if (p != NULL)
-		(void) free(p);
+	return icatalloc(NULL, string);
 }
diff --git a/timezone/private.h b/timezone/private.h
index 008d468ac7..1d1d391f56 100644
--- a/timezone/private.h
+++ b/timezone/private.h
@@ -15,16 +15,6 @@
 ** Thank you!
 */
 
-/*
-** ID
-*/
-
-#ifndef lint
-#ifndef NOID
-static char	privatehid[] = "@(#)private.h	8.6";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
 #define GRANDPARENTED	"Local time zone must be set--see zic manual page"
 
 /*
@@ -154,6 +144,12 @@ typedef long		int_fast64_t;
 #define INT32_MIN (-1 - INT32_MAX)
 #endif /* !defined INT32_MIN */
 
+#if 2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)
+# define ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define ATTRIBUTE_PURE /* empty */
+#endif
+
 /*
 ** Workarounds for compilers/systems.
 */
@@ -172,13 +168,8 @@ extern char *	asctime_r(struct tm const *, char *);
 ** Private function declarations.
 */
 
-char *		icalloc(int nelem, int elsize);
 char *		icatalloc(char * old, const char * new);
 char *		icpyalloc(const char * string);
-char *		imalloc(int n);
-void *		irealloc(void * pointer, int size);
-void		icfree(char * pointer);
-void		ifree(char * pointer);
 const char *	scheck(const char * string, const char * format);
 
 /*
diff --git a/timezone/scheck.c b/timezone/scheck.c
index 74d9b07c14..ed60980d83 100644
--- a/timezone/scheck.c
+++ b/timezone/scheck.c
@@ -3,20 +3,12 @@
 ** 2006-07-17 by Arthur David Olson.
 */
 
-#ifndef lint
-#ifndef NOID
-static char	elsieid[] = "@(#)scheck.c	8.19";
-#endif /* !defined lint */
-#endif /* !defined NOID */
-
 /*LINTLIBRARY*/
 
 #include "private.h"
 
 const char *
-scheck(string, format)
-const char * const	string;
-const char * const	format;
+scheck(const char *const string, const char *const format)
 {
 	register char *		fbuf;
 	register const char *	fp;
@@ -28,7 +20,7 @@ const char * const	format;
 	result = "";
 	if (string == NULL || format == NULL)
 		return result;
-	fbuf = imalloc((int) (2 * strlen(format) + 4));
+	fbuf = malloc(2 * strlen(format) + 4);
 	if (fbuf == NULL)
 		return result;
 	fp = format;
@@ -57,7 +49,7 @@ const char * const	format;
 	*tp++ = 'c';
 	*tp = '\0';
 	if (sscanf(string, fbuf, &dummy) != 1)
-		result = (char *) format;
-	ifree(fbuf);
+		result = format;
+	free(fbuf);
 	return result;
 }
diff --git a/timezone/tzfile.h b/timezone/tzfile.h
index 3a9eee305a..0f6c687f16 100644
--- a/timezone/tzfile.h
+++ b/timezone/tzfile.h
@@ -16,16 +16,6 @@
 */
 
 /*
-** ID
-*/
-
-#ifndef lint
-#ifndef NOID
-static char	tzfilehid[] = "@(#)tzfile.h	8.1";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*
 ** Information about time zone files.
 */
 
diff --git a/timezone/tzselect.ksh b/timezone/tzselect.ksh
index 57bf707e45..0e93d7982b 100644
--- a/timezone/tzselect.ksh
+++ b/timezone/tzselect.ksh
@@ -1,6 +1,6 @@
 #! @KSH@
 
-VERSION='@(#)tzselect.ksh	8.2'
+TZVERSION=tz2012i
 
 # Ask the user about the time zone, and output the resulting TZ value to stdout.
 # Interact with the user via stderr and stdin.
@@ -9,29 +9,22 @@ VERSION='@(#)tzselect.ksh	8.2'
 
 # Porting notes:
 #
-# This script requires several features of the Korn shell.
-# If your host lacks the Korn shell,
-# you can use either of the following free programs instead:
-#
-#	<a href=ftp://ftp.gnu.org/pub/gnu/>
-#	Bourne-Again shell (bash)
-#	</a>
+# This script requires a Posix-like shell with the extension of a
+# 'select' statement.  The 'select' statement was introduced in the
+# Korn shell and is available in Bash and other shell implementations.
+# If your host lacks both Bash and the Korn shell, you can get their
+# source from one of these locations:
 #
-#	<a href=ftp://ftp.cs.mun.ca/pub/pdksh/pdksh.tar.gz>
-#	Public domain ksh
-#	</a>
+#	Bash <http://www.gnu.org/software/bash/bash.html>
+#	Korn Shell <http://www.kornshell.com/>
+#	Public Domain Korn Shell <http://www.cs.mun.ca/~michael/pdksh/>
 #
 # This script also uses several features of modern awk programs.
-# If your host lacks awk, or has an old awk that does not conform to Posix.2,
+# If your host lacks awk, or has an old awk that does not conform to Posix,
 # you can use either of the following free programs instead:
 #
-#	<a href=ftp://ftp.gnu.org/pub/gnu/>
-#	GNU awk (gawk)
-#	</a>
-#
-#	<a href=ftp://ftp.whidbey.net/pub/brennan/>
-#	mawk
-#	</a>
+#	Gawk (GNU awk) <http://www.gnu.org/software/gawk/>
+#	mawk <http://invisible-island.net/mawk/>
 
 
 # Specify default values for environment variables if they are unset.
@@ -55,7 +48,7 @@ EOF
     exit 0
 elif [ "$1" = "--version" ]; then
     cat <<EOF
-tzselect $VERSION
+tzselect $TZVERSION
 EOF
     exit 0
 fi
diff --git a/timezone/version.h b/timezone/version.h
new file mode 100644
index 0000000000..0873ea1347
--- /dev/null
+++ b/timezone/version.h
@@ -0,0 +1 @@
+static char const TZVERSION[]="tz2012i";
diff --git a/timezone/zdump.c b/timezone/zdump.c
index 67bed06bc3..805267d14c 100644
--- a/timezone/zdump.c
+++ b/timezone/zdump.c
@@ -3,7 +3,7 @@
 ** 2009-05-17 by Arthur David Olson.
 */
 
-static char	elsieid[] = "@(#)zdump.c	8.10";
+#include "version.h"
 
 /*
 ** This code has been made independent of the rest of the time
@@ -17,6 +17,7 @@ static char	elsieid[] = "@(#)zdump.c	8.10";
 #include "time.h"	/* for struct tm */
 #include "stdlib.h"	/* for exit, malloc, atoi */
 #include "float.h"	/* for FLT_MAX and DBL_MAX */
+#include "limits.h"	/* for CHAR_BIT, LLONG_MAX */
 #include "ctype.h"	/* for isalpha et al. */
 #ifndef isascii
 #define isascii(x) 1
@@ -119,6 +120,12 @@ static char	elsieid[] = "@(#)zdump.c	8.10";
 #endif /* !defined GNUC_or_lint */
 #endif /* !defined INITIALIZE */
 
+#if 2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)
+# define ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define ATTRIBUTE_PURE /* empty */
+#endif
+
 /*
 ** For the benefit of GNU folk...
 ** `_(MSGID)' uses the current locale's message library string for MSGID.
@@ -144,28 +151,54 @@ extern char *	optarg;
 extern int	optind;
 extern char *	tzname[2];
 
-static time_t	absolute_min_time;
-static time_t	absolute_max_time;
+/* The minimum and maximum finite time values.  Shift 'long long' or
+   'long' instead of 'time_t'; this avoids compile-time errors when
+   time_t is floating-point.  In practice, 'long long' is wide enough.  */
+static time_t const absolute_min_time =
+  ((time_t) 0.5 == 0.5
+   ? (sizeof (time_t) == sizeof (float) ? (time_t) -FLT_MAX
+      : sizeof (time_t) == sizeof (double) ? (time_t) -DBL_MAX
+      : sizeof (time_t) == sizeof (long double) ? (time_t) -LDBL_MAX
+      : 0)
+   : (time_t) -1 < 0
+#ifdef LLONG_MAX
+   ? (time_t) ((long long) -1 << (CHAR_BIT * sizeof (time_t) - 1))
+#else
+   ? (time_t) ((long) -1 << (CHAR_BIT * sizeof (time_t) - 1))
+#endif
+   : 0);
+static time_t const absolute_max_time =
+  ((time_t) 0.5 == 0.5
+   ? (sizeof (time_t) == sizeof (float) ? (time_t) FLT_MAX
+      : sizeof (time_t) == sizeof (double) ? (time_t) DBL_MAX
+      : sizeof (time_t) == sizeof (long double) ? (time_t) LDBL_MAX
+      : -1)
+   : (time_t) -1 < 0
+#ifdef LLONG_MAX
+   ? (time_t) (- (~ 0 < 0) - ((long long) -1 << (CHAR_BIT * sizeof (time_t) - 1)))
+#else
+   ? (time_t) (- (~ 0 < 0) - ((long) -1 << (CHAR_BIT * sizeof (time_t) - 1)))
+#endif
+   : (time_t) -1);
 static size_t	longest;
 static char *	progname;
 static int	warned;
 
 static char *	abbr(struct tm * tmp);
 static void	abbrok(const char * abbrp, const char * zone);
-static long	delta(struct tm * newp, struct tm * oldp);
+static long	delta(struct tm * newp, struct tm * oldp) ATTRIBUTE_PURE;
 static void	dumptime(const struct tm * tmp);
 static time_t	hunt(char * name, time_t lot, time_t	hit);
-static void	setabsolutes(void);
+static void	checkabsolutes(void);
 static void	show(char * zone, time_t t, int v);
 static const char *	tformat(void);
-static time_t	yeartot(long y);
+static time_t	yeartot(long y) ATTRIBUTE_PURE;
 
 #ifndef TYPECHECK
 #define my_localtime	localtime
 #else /* !defined TYPECHECK */
 static struct tm *
-my_localtime(tp)
-time_t *	tp;
+my_localtime(time_t *tp)
 {
 	register struct tm *	tmp;
 
@@ -198,12 +231,10 @@ time_t *	tp;
 #endif /* !defined TYPECHECK */
 
 static void
-abbrok(abbrp, zone)
-const char * const	abbrp;
-const char * const	zone;
+abbrok(const char *const abbrp, const char *const zone)
 {
 	register const char *	cp;
-	register char *		wp;
+	register const char *	wp;
 
 	if (warned)
 		return;
@@ -236,9 +267,7 @@ const char * const	zone;
 }
 
 static void
-usage(stream, status)
-FILE * const	stream;
-const int	status;
+usage(FILE * const stream, const int status)
 {
 	(void) fprintf(stream,
 _("%s: usage is %s [ --version ] [ --help ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n\
@@ -249,9 +278,7 @@ Report bugs to tz@elsie.nci.nih.gov.\n"),
 }
 
 int
-main(argc, argv)
-int	argc;
-char *	argv[];
+main(int argc, char *argv[])
 {
 	register int		i;
 	register int		c;
@@ -282,7 +309,7 @@ char *	argv[];
 	progname = argv[0];
 	for (i = 1; i < argc; ++i)
 		if (strcmp(argv[i], "--version") == 0) {
-			(void) printf("%s\n", elsieid);
+			(void) printf("%s\n", TZVERSION);
 			exit(EXIT_SUCCESS);
 		} else if (strcmp(argv[i], "--help") == 0) {
 			usage(stdout, EXIT_SUCCESS);
@@ -315,7 +342,7 @@ char *	argv[];
 				exit(EXIT_FAILURE);
 			}
 		}
-		setabsolutes();
+		checkabsolutes();
 		cutlotime = yeartot(cutloyear);
 		cuthitime = yeartot(cuthiyear);
 	}
@@ -330,10 +357,9 @@ char *	argv[];
 
 		for (i = 0; environ[i] != NULL; ++i)
 			continue;
-		fakeenv = (char **) malloc((size_t) ((i + 2) *
-			sizeof *fakeenv));
-		if (fakeenv == NULL ||
-			(fakeenv[0] = (char *) malloc(longest + 4)) == NULL) {
+		fakeenv = malloc((i + 2) * sizeof *fakeenv);
+		if (fakeenv == NULL
+		    || (fakeenv[0] = malloc(longest + 4)) == NULL) {
 					(void) perror(progname);
 					exit(EXIT_FAILURE);
 		}
@@ -406,53 +432,18 @@ char *	argv[];
 }
 
 static void
-setabsolutes(void)
+checkabsolutes(void)
 {
-	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,
+	if (absolute_max_time < absolute_min_time) {
+		(void) fprintf(stderr,
 _("%s: use of -v on system with floating time_t other than float or double\n"),
-				progname);
-			exit(EXIT_FAILURE);
-		}
-	} else if (0 > (time_t) -1) {
-		/*
-		** time_t is signed.  Assume overflow wraps around.
-		*/
-		time_t t = 0;
-		time_t t1 = 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.
-		*/
-		absolute_min_time = 0;
-		absolute_max_time = absolute_min_time - 1;
+			       progname);
+		exit(EXIT_FAILURE);
 	}
 }
 
 static time_t
-yeartot(y)
-const long	y;
+yeartot(const long y)
 {
 	register long	myy;
 	register long	seconds;
@@ -530,9 +521,7 @@ hunt(char *name, time_t lot, time_t hit)
 */
 
 static long
-delta(newp, oldp)
-struct tm *	newp;
-struct tm *	oldp;
+delta(struct tm * newp, struct tm *oldp)
 {
 	register long	result;
 	register int	tmy;
@@ -586,8 +575,7 @@ show(char *zone, time_t t, int v)
 }
 
 static char *
-abbr(tmp)
-struct tm *	tmp;
+abbr(struct tm *tmp)
 {
 	register char *	result;
 	static char	nada;
@@ -626,8 +614,7 @@ tformat(void)
 }
 
 static void
-dumptime(timeptr)
-register const struct tm *	timeptr;
+dumptime(register const struct tm *timeptr)
 {
 	static const char	wday_name[][3] = {
 		"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
diff --git a/timezone/zic.c b/timezone/zic.c
index 1ea7b18eb6..64af1b21b3 100644
--- a/timezone/zic.c
+++ b/timezone/zic.c
@@ -3,8 +3,7 @@
 ** 2006-07-17 by Arthur David Olson.
 */
 
-static char	elsieid[] = "@(#)zic.c	8.25";
-
+#include "version.h"
 #include "private.h"
 #include "locale.h"
 #include "tzfile.h"
@@ -111,17 +110,8 @@ static int	addtype(long gmtoff, const char * abbr, int isdst,
 static void	leapadd(zic_t t, int positive, int rolling, int count);
 static void	adjleap(void);
 static void	associate(void);
-static int	ciequal(const char * ap, const char * bp);
-static void	convert(long val, char * buf);
-static void	convert64(zic_t val, char * buf);
 static void	dolink(const char * fromfield, const char * tofield);
-static void	doabbr(char * abbr, const char * format,
-			const char * letters, int isdst, int doquotes);
-static void	eat(const char * name, int num);
-static void	eats(const char * name, int num,
-			const char * rname, int rnum);
 static long	eitol(int i);
-static void	error(const char * message);
 static char **	getfields(char * buf);
 static long	gethms(const char * string, const char * errstrng,
 			int signable);
@@ -132,32 +122,18 @@ static void	inrule(char ** fields, int nfields);
 static int	inzcont(char ** fields, int nfields);
 static int	inzone(char ** fields, int nfields);
 static int	inzsub(char ** fields, int nfields, int iscont);
-static int	is32(zic_t x);
-static int	itsabbr(const char * abbr, const char * word);
 static int	itsdir(const char * name);
 static int	lowerit(int c);
-static char *	memcheck(char * tocheck);
 static int	mkdirs(char * filename);
 static void	newabbr(const char * abbr);
 static long	oadd(long t1, long t2);
 static void	outzone(const struct zone * zp, int ntzones);
-static void	puttzcode(long code, FILE * fp);
-static void	puttzcode64(zic_t code, FILE * fp);
-static int	rcomp(const void * leftp, const void * rightp);
 static zic_t	rpytime(const struct rule * rp, int wantedy);
 static void	rulesub(struct rule * rp,
 			const char * loyearp, const char * hiyearp,
 			const char * typep, const char * monthp,
 			const char * dayp, const char * timep);
-static int 	stringoffset(char * result, long offset);
-static int	stringrule(char * result, const struct rule * rp,
-			long dstoff, long gmtoff);
-static void 	stringzone(char * result,
-			const struct zone * zp, int ntzones);
-static void	setboundaries(void);
 static zic_t	tadd(zic_t t1, long t2);
-static void	usage(FILE *stream, int status);
-static void	writezone(const char * name, const char * string);
 static int	yearistype(int year, const char * type);
 
 static int		charcnt;
@@ -170,9 +146,7 @@ static int		leapmaxyear;
 static int		linenum;
 static int		max_abbrvar_len;
 static int		max_format_len;
-static zic_t		max_time;
 static int		max_year;
-static zic_t		min_time;
 static int		min_year;
 static int		noise;
 static const char *	rfilename;
@@ -378,9 +352,8 @@ static char		roll[TZ_MAX_LEAPS];
 ** Memory allocation.
 */
 
-static char *
-memcheck(ptr)
-char * const	ptr;
+static ATTRIBUTE_PURE void *
+memcheck(void *const ptr)
 {
 	if (ptr == NULL) {
 		const char *e = strerror(errno);
@@ -392,8 +365,8 @@ char * const	ptr;
 	return ptr;
 }
 
-#define emalloc(size)		memcheck(imalloc(size))
-#define erealloc(ptr, size)	memcheck(irealloc((ptr), (size)))
+#define emalloc(size)		memcheck(malloc(size))
+#define erealloc(ptr, size)	memcheck(realloc(ptr, size))
 #define ecpyalloc(ptr)		memcheck(icpyalloc(ptr))
 #define ecatalloc(oldp, newp)	memcheck(icatalloc((oldp), (newp)))
 
@@ -402,11 +375,8 @@ char * const	ptr;
 */
 
 static void
-eats(name, num, rname, rnum)
-const char * const	name;
-const int		num;
-const char * const	rname;
-const int		rnum;
+eats(const char *const name, const int num, const char *const rname,
+     const int rnum)
 {
 	filename = name;
 	linenum = num;
@@ -415,16 +385,13 @@ const int		rnum;
 }
 
 static void
-eat(name, num)
-const char * const	name;
-const int		num;
+eat(const char *const name, const int num)
 {
-	eats(name, num, (char *) NULL, -1);
+	eats(name, num, NULL, -1);
 }
 
 static void
-error(string)
-const char * const	string;
+error(const char *const string)
 {
 	/*
 	** Match the format of "cc" to allow sh users to
@@ -441,15 +408,14 @@ const