- tz - lists.iana.org

Re: FW: tzcode2006a.tar.gz on Irix 6.5.18m
by Paul Eggert Feb. 7, 2006

Feb. 7, 2006

Andrew Donaldson <A.Donaldson(a)bom.gov.au> writes: > Yep, that fixes it. Thanks for checking it. > Do you plan to include this in the next version? Yes, I'll submit it as part of my next proposed patch; Arthur David Olson has the final say.

1 0

Re: FW: tzcode2006a.tar.gz on Irix 6.5.18m
by Paul Eggert Feb. 7, 2006

Feb. 7, 2006

Thanks for looking into the problem. zdump.c relies on undefined behavior on overflow, which is the problem here, but if we can assume C99+LIA-1 semantics (the common case) we can get a reliable result. Also, I think it's safer to avoid 'register'. Does the following patch to zdump.c fix things for you? --- zdump.c 2006/02/02 20:42:22 2005.18.0.1 +++ zdump.c 2006/02/08 00:33:28 @@ -418,14 +418,21 @@ _("%s: use of -v on system with floating } } 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.

1 0

RE: OT- trouble connecting to elsie-
by Olson, Arthur David (NIH/NCI) [E] Feb. 7, 2006

Feb. 7, 2006

I've just update the TCP wrapper in user here at elsie; give ftp a try and let me know one way or the other. Thanks! --ado -----Original Message----- From: Dave Cantor [mailto:Dave@Cantor.mv.com] Sent: Monday, February 06, 2006 8:26 AM To: Paul Eggert Cc: tz(a)lecserver.nci.nih.gov Subject: Re: OT- trouble connecting to elsie- On 5 Feb 2006 at 22:59, Paul Eggert wrote: > > Date: Fri, 03 Feb 2006 09:51:19 -0500 > > From: "Dave Cantor" <Dave(a)Cantor.mv.com> > > Message-ID: <43E32797.7719.2F8A382(a)Dave.Cantor.mv.com> > > | I have not been able to connect to elsie.nci.nih.gov via ftp, or, > > | rather, whenever I connect, the remote host disconnects. Is > > | anyone else having this trouble? > In the past this has happened when people attempt to connect to elsie > from blacklisted IP addresses. I don't know who's in charge of the > blacklist, unfortunately. It could be something as simple as the > reverse-DNS entry for your IP address; is it set up properly? As far as I can tell, the reverse-DNS entry is correct: host174-106.defiant.tvcconnect.net, IP address 216.255.174.106, Maybe it's blacklisted for some reason. Thanks, Dave C.

2 1

FW: Bug#351049: libc6: America/Havana DST info wrong for 2005/2006
by Olson, Arthur David (NIH/NCI) [E] Feb. 6, 2006

Feb. 6, 2006

Lionel Elie Mamane is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: Lionel Elie Mamane [mailto:lionel@mamane.lu] Sent: Thursday, February 02, 2006 9:18 AM To: Debian Bug Tracking System Subject: Bug#351049: libc6: America/Havana DST info wrong for 2005/2006 Package: libc6 Version: 2.3.5-12.1 Severity: normal Cuba did not switch back to non-DST time on October 2005, but the timezone info in libc thinks it did: Rule Cuba 2005 max - Oct lastSun 0:00s 0 S That line should probably be changed to Rule Cuba 2006 max - Oct lastSun 0:00s 0 S Source: http://www.timeanddate.com/worldclock/timezone.html?n=99 (and a friend that spent vacation in Cuba) Note that the timezone/northamerica says: # 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. ^^^^^^^^^^^^^^^^^^^^^^^^^ So it became a two-year temporary measure? We are not sure if it won't become a 3+ year temporary measure. -- System Information: Debian Release: testing/unstable APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: i386 (x86_64) Shell: /bin/sh linked to /bin/bash Kernel: Linux 2.6.15-deb1-64bit Locale: LANG=fr_LU.UTF-8, LC_CTYPE=fr_LU.UTF-8 (charmap=UTF-8) -- no debconf information

5 11

RE: Misspelling With the Australia/Lord_Howe Time Zone
by Olson, Arthur David (NIH/NCI) [E] Feb. 6, 2006

Feb. 6, 2006

I failed to find a "load" problem here at elsie (see below). (I also tried looking in the SCCS record to no avail.) --ado Script started on Mon 06 Feb 2006 10:17:36 AM EST lecserver$ ls -l total 0 -rw-r--r-- 1 olsona root 0 Feb 6 10:17 typescript lecserver$ ftp elsie.nci.nih.gov Connected to lecserver. 220 lecserver FTP server (Version wu-2.6.2(4)+connect-dos.patch+realpath.patch Tue Apr 13 15:43:02 EDT 2004) ready. Name (elsie.nci.nih.gov:olsona): anonymous 331 Guest login ok, send your complete e-mail address as password. Password: 230 Guest login ok, access restrictions apply. ftp> binary 200 Type set to I. ftp> prompt Interactive mode off. ftp> cd pub 250 CWD command successful. ftp> get tzcode2006a.tar.gz 200 PORT command successful. 150 Opening BINARY mode data connection for tzcode2006a.tar.gz (180636 bytes). 226 Transfer complete. local: tzcode2006a.tar.gz remote: tzcode2006a.tar.gz 180636 bytes received in 0.031 seconds (5761.77 Kbytes/s) ftp> get tzdata2006a.tar.gz 200 PORT command successful. 150 Opening BINARY mode data connection for tzdata2006a.tar.gz (149612 bytes). 226 Transfer complete. local: tzdata2006a.tar.gz remote: tzdata2006a.tar.gz 149612 bytes received in 0.058 seconds (2507.86 Kbytes/s) ftp> quit 221-You have transferred 330248 bytes in 2 files. 221-Total traffic for this session was 331005 bytes in 2 transfers. 221-Thank you for using the FTP service on lecserver. 221 Goodbye. lecserver$ gunzip < *code* | tar xfp - lecserver$ gunzip < *data* | tar xfp - lecserver$ ls -l total 3152 -r--r--r-- 1 olsona root 20768 Jan 26 10:19 africa -r--r--r-- 1 olsona root 12028 Jan 26 10:19 antarctica -r--r--r-- 1 olsona root 4094 Jan 26 10:19 asctime.c -r--r--r-- 1 olsona root 65779 Jan 30 08:59 asia -r--r--r-- 1 olsona root 55475 Jan 26 10:19 australasia -r--r--r-- 1 olsona root 3678 Jan 26 10:19 backward -r--r--r-- 1 olsona root 3417 Jan 26 10:19 checktab.awk -r--r--r-- 1 olsona root 5065 Jan 26 10:19 date.1 -rw-r--r-- 1 olsona root 6151 Jan 30 08:59 date.1.txt -r--r--r-- 1 olsona root 22986 Jan 26 10:19 date.c -r--r--r-- 1 olsona root 1708 Jan 26 10:19 difftime.c -r--r--r-- 1 olsona root 2921 Jan 26 10:19 etcetera -r--r--r-- 1 olsona root 104518 Jan 26 10:19 europe -r--r--r-- 1 olsona root 311 Jan 26 10:19 factory -r--r--r-- 1 olsona root 1273 Jan 26 10:19 ialloc.c -r--r--r-- 1 olsona root 4008 Jan 26 10:19 iso3166.tab -r--r--r-- 1 olsona root 55948 Jan 26 10:19 itca.jpg -r--r--r-- 1 olsona root 3080 Jan 26 10:19 leapseconds -r--r--r-- 1 olsona root 45789 Jan 26 10:19 localtime.c -r--r--r-- 1 olsona root 2010 Jan 26 10:19 logwtmp.c -r--r--r-- 1 olsona root 15516 Jan 26 10:19 Makefile -r--r--r-- 1 olsona root 5766 Jan 26 10:19 newctime.3 -rw-r--r-- 1 olsona root 5942 Jan 30 08:59 newctime.3.txt -r--r--r-- 1 olsona root 6732 Jan 26 10:19 newstrftime.3 -rw-r--r-- 1 olsona root 4995 Jan 30 08:59 newstrftime.3.txt -r--r--r-- 1 olsona root 5338 Jan 26 10:19 newtzset.3 -rw-r--r-- 1 olsona root 6850 Jan 30 08:59 newtzset.3.txt -r--r--r-- 1 olsona root 92970 Jan 30 08:59 northamerica -r--r--r-- 1 olsona root 1112 Jan 26 10:19 pacificnew -r--r--r-- 1 olsona root 6839 Jan 26 10:19 private.h -r--r--r-- 1 olsona root 3739 Jan 26 10:19 README -r--r--r-- 1 olsona root 1105 Jan 26 10:19 scheck.c -r--r--r-- 1 olsona root 19224 Jan 26 10:19 solar87 -r--r--r-- 1 olsona root 19242 Jan 26 10:19 solar88 -r--r--r-- 1 olsona root 19518 Jan 26 10:19 solar89 -r--r--r-- 1 olsona root 45285 Jan 26 10:19 southamerica -r--r--r-- 1 olsona root 18681 Jan 26 10:19 strftime.c -r--r--r-- 1 olsona root 1464 Jan 26 10:19 systemv -r--r--r-- 1 olsona root 24038 Jan 26 10:19 Theory -r--r--r-- 1 olsona root 3290 Jan 26 10:19 time2posix.3 -rw-r--r-- 1 olsona root 3402 Jan 30 08:59 time2posix.3.txt -rw-r--r-- 1 olsona root 0 Feb 6 10:17 typescript -r--r--r-- 1 olsona root 11956 Jan 26 10:19 tz-art.htm -r--r--r-- 1 olsona root 28222 Jan 30 08:59 tz-link.htm -rw-r--r-- 1 olsona root 180636 Feb 6 10:18 tzcode2006a.tar.gz -rw-r--r-- 1 olsona root 149612 Feb 6 10:18 tzdata2006a.tar.gz -r--r--r-- 1 olsona root 3669 Jan 26 10:19 tzfile.5 -rw-r--r-- 1 olsona root 3789 Jan 30 08:59 tzfile.5.txt -r--r--r-- 1 olsona root 4792 Jan 26 10:19 tzfile.h -r--r--r-- 1 olsona root 1100 Jan 26 10:19 tzselect.8 -rw-r--r-- 1 olsona root 1089 Jan 30 08:59 tzselect.8.txt -r--r--r-- 1 olsona root 6880 Jan 26 10:19 tzselect.ksh -r--r--r-- 1 olsona root 5839 Jan 26 10:19 usno1988 -r--r--r-- 1 olsona root 21156 Jan 26 10:19 usno1989 -r--r--r-- 1 olsona root 21154 Jan 26 10:19 usno1989a -r--r--r-- 1 olsona root 10354 Jan 26 10:19 usno1995 -r--r--r-- 1 olsona root 10405 Jan 26 10:19 usno1997 -r--r--r-- 1 olsona root 10405 Jan 26 10:19 usno1998 -r--r--r-- 1 olsona root 404 Jan 26 10:19 workman.sh -r--r--r-- 1 olsona root 610 Jan 26 10:19 yearistype.sh -r--r--r-- 1 olsona root 1365 Jan 26 10:19 zdump.8 -rw-r--r-- 1 olsona root 1449 Jan 30 08:59 zdump.8.txt -r--r--r-- 1 olsona root 15656 Jan 26 10:19 zdump.c -r--r--r-- 1 olsona root 10192 Jan 26 10:19 zic.8 -rw-r--r-- 1 olsona root 10463 Jan 30 08:59 zic.8.txt -r--r--r-- 1 olsona root 53629 Jan 26 10:19 zic.c -r--r--r-- 1 olsona root 17770 Jan 30 08:59 zone.tab lecserver$ grep -i load * date.1:UTC leap seconds are loaded from date.1.txt: are loaded from /usr/local/etc/zoneinfo/posixrules. etcetera:# as functions like gmtime load the "GMT" file to handle leap seconds properly. localtime.c:** The DST rules to use if TZ has no rules and we can't load TZDEFRULES. localtime.c:static void gmtload P((struct state * sp)); localtime.c:static int tzload P((const char * name, struct state * sp)); localtime.c:tzload(name, sp) localtime.c: register int load_result; localtime.c: load_result = tzload(TZDEFRULES, sp); localtime.c: if (load_result != 0) localtime.c: if (*name == '\0' && load_result != 0) localtime.c:gmtload(sp) localtime.c: if (tzload(gmt, sp) != 0) localtime.c: if (tzload((char *) NULL, lclptr) != 0) localtime.c: gmtload(lclptr); localtime.c: } else if (tzload(name, lclptr) != 0) localtime.c: (void) gmtload(lclptr); localtime.c: gmtload(gmtptr); newctime.3:UTC leap seconds are loaded from newctime.3.txt: are loaded from /usr/local/etc/zoneinfo/posixrules. newtzset.3:UTC leap seconds are loaded from newtzset.3.txt: are loaded from /usr/local/etc/zoneinfo/posixrules. tz-link.htm:The following shell commands download tz-link.htm:see the downloaded tz-link.htm:href="http://www.manifold.net/download/freemaps.html">Free Maps and lecserver$ exit script done on Mon 06 Feb 2006 10:18:55 AM EST ________________________________ From: Zeb Olaff [mailto:zebonebo@gmail.com] Sent: Friday, February 03, 2006 8:45 PM To: tz(a)lecserver.nci.nih.gov Subject: Misspelling With the Australia/Lord_Howe Time Zone I am using your database and have found that the full name for the Australia/Lord_Howe reads "Load Howe" instead of "Lord Howe". Hopefully this is the correct email address to send this information to. Thank You, Zeb Olaf

1 0

FW: Misspelling With the Australia/Lord_Howe Time Zone
by Olson, Arthur David (NIH/NCI) [E] Feb. 6, 2006

Feb. 6, 2006

Zeb Olaff is not on the time zone mailing list; direct replies appropriately. --ado ________________________________ From: Zeb Olaff [mailto:zebonebo@gmail.com] Sent: Friday, February 03, 2006 8:45 PM To: tz(a)lecserver.nci.nih.gov Subject: Misspelling With the Australia/Lord_Howe Time Zone I am using your database and have found that the full name for the Australia/Lord_Howe reads "Load Howe" instead of "Lord Howe". Hopefully this is the correct email address to send this information to. Thank You, Zeb Olaf

1 0

Misspelling With the Australia/Lord_Howe Time Zone
by Zeb Olaff Feb. 3, 2006

Feb. 3, 2006

I am using your database and have found that the full name for the Australia/Lord_Howe reads "Load Howe" instead of "Lord Howe". Hopefully this is the correct email address to send this information to. Thank You, Zeb Olaf

1 0

Re: FW: tzcode2006a.tar.gz on Irix 6.5.18m
by Paul Eggert Feb. 2, 2006

Feb. 2, 2006

Andrew Donaldson <A.Donaldson(a)bom.gov.au> writes: > Yell out if you would like anything else tested. Thanks for looking into the problem. There were a lot of changes between the non-working and the working zdump.c. I enclose them below. One thing that jumps out is the new setabsoletes() function. I suspect that it is not working properly on your host. Can you verify this, by using a debugger and/or inserting print statements? I would like to know the value of absolute_min_time and absolute_max_time when setabsoletes returns, and I'd also like to know the size and signedness of time_t on your host. (The code is relying on undefined behavior here, so it's not strictly portable.) Thanks. --- tz-2004gg/zdump.c 2004-10-18 08:37:53.000000000 -0700 +++ tz-2004hg/zdump.c 2004-12-07 08:40:04.000000000 -0800 @@ -1,4 +1,4 @@ -static char elsieid[] = "@(#)zdump.c 7.47"; +static char elsieid[] = "@(#)zdump.c 7.57"; /* ** This code has been made independent of the rest of the time @@ -11,6 +11,15 @@ static char elsieid[] = "@(#)zdump.c 7.4 #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 @@ -71,6 +80,10 @@ static char elsieid[] = "@(#)zdump.c 7.4 #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" @@ -127,13 +140,18 @@ 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(); static void show P((char * zone, time_t t, int v)); -static void dumptime P((const struct tm * tmp)); +static time_t yeartot P((long y)); int main(argc, argv) @@ -143,18 +161,22 @@ 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 @@ -169,34 +191,45 @@ 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 (vflag) { + if (cutarg != NULL) { + long lo; + long hi; + char c; + + if (sscanf(cutarg, "%ld%c", &hi, &c) == 1) { + cuthiyear = hi; + } else if (sscanf(cutarg, "%ld,%ld%c", + &lo, &hi, &c) == 2) { + cutloyear = lo; + cuthiyear = hi; + } else { +(void) fprintf(stderr, _("%s: wild -c argument %s\n"), + progname, cutarg); (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; + } + 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; @@ -226,58 +259,129 @@ _("%s: usage is %s [ --version ] [ -v ] 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); + if (t < cutlotime) + t = cutlotime; + tmp = 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), + 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; +} - /* gcc -Wall pacifier */ - for ( ; ; ) +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; + + 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 @@ -287,24 +391,38 @@ time_t lot; time_t hit; { time_t t; + long diff; struct tm lotm; + register struct tm * lotmp; struct tm tm; - static char loab[MAX_STRING_LENGTH]; + register struct tm * tmp; + char loab[MAX_STRING_LENGTH]; - lotm = *localtime(&lot); + lotmp = localtime(&lot); + if (lotmp != NULL) { + lotm = *lotmp; (void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1); - while ((hit - lot) >= 2) { - t = lot / 2 + hit / 2; + } + 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 = 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); @@ -321,8 +439,8 @@ 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); @@ -345,15 +463,22 @@ 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("%g", (double) t); + } else { + dumptime(tmp); + (void) printf(" UTC"); + } + (void) printf(" = "); } tmp = localtime(&t); dumptime(tmp); + if (tmp != NULL) { if (*abbr(tmp) != '\0') (void) printf(" %s", abbr(tmp)); if (v) { @@ -362,6 +487,7 @@ int v; (void) printf(" gmtoff=%ld", tmp->TM_GMTOFF); #endif /* defined TM_GMTOFF */ } + } (void) printf("\n"); } @@ -394,6 +520,10 @@ register const struct tm * timeptr; 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

1 0

FW: Time zone error for US cities.
by Olson, Arthur David (NIH/NCI) [E] Feb. 2, 2006

Feb. 2, 2006

Jian Zhang is not on the time zone mailling list; direct replies appropriately. --ado ________________________________ From: Jian Zhang [mailto:Jian.Zhang@Campbell.com] Sent: Wednesday, February 01, 2006 3:26 PM To: tz(a)lecserver.nci.nih.gov Subject: Time zone error for US cities. Dear Sir/Madam, I am trying to use the Time zone converter and got an error for US cities. The error is: When I try to convert the New_York time from: 30-Apr-1972 02:10:30 To GMT time, it gives me the time as: 31-Dec-1969 23:59:59 That is clearly wrong. Does any one have the same problem? The error is isolated to the 02:00:00 to 03:00:00 on that date. Thanks Email jian.zhang(a)campbell.com Jian ______________________________________________________________________ Campbell & Company, Inc.: The information in this e-mail may contain privileged/confidential information. If you are not the intended recipient, you must not read, use, copy or disseminate the information or take any action in reliance thereupon. If you have received this e-mail in error, please notify Campbell & Company, Inc. immediately by e-mail or telephone and delete the e-mail and any attachments from any computer. The information in this e-mail does not constitute an offer to sell or the solicitation of an offer to buy any securities in any jurisdiction or for the benefit of any person. ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________

2 1

FW: tzcode2006a.tar.gz on Irix 6.5.18m
by Olson, Arthur David (NIH/NCI) [E] Feb. 2, 2006

Feb. 2, 2006

Andrew Donaldson is not on the time zone mailing list; direct replies appropriately. --ado -----Original Message----- From: Andrew Donaldson [mailto:A.Donaldson@bom.gov.au] Sent: Wednesday, February 01, 2006 10:48 PM To: tz(a)lecserver.nci.nih.gov Cc: Rob Petrini Subject: tzcode2006a.tar.gz on Irix 6.5.18m Dear Sir, We had just had reason to update some of our SGI machines' timezone data to reflect the changes in Melbourne, Australia due to the Commonwealth Games. Please note that we are hardly experts in this area, so we may have missed something obvious. We found that the zdump utility, used with the -v option, would only output the first times. $ ./zdump -v Australia/Melbourne Australia/Melbourne Thu Jan 1 00:00:00 1970 UTC = Thu Jan 1 10:00:00 1970 EST isdst=0 Australia/Melbourne Fri Jan 2 00:00:00 1970 UTC = Fri Jan 2 10:00:00 1970 EST isdst=0 Australia/Melbourne Tue Dec 30 23:59:59 1969 UTC = Wed Dec 31 09:59:59 1969 EST isdst=0 Australia/Melbourne Wed Dec 31 23:59:59 1969 UTC = Thu Jan 1 09:59:59 1970 EST isdst=0 After a bit of head scratching, we proved that the data files were valid, by viewing them on a linux computer, so we tried the source code from the classictzcode.tar.gz file which produced valid results both with the classictzdata.tar.gz and tzdata2006a.tar.gz data, the later including the updates to Melbourne time that we desired. I am unsure why the tzcode2006a.tar.gz version of zdump behaved differently. To compile tzcode2006a.tar.gz I had to make these changes: $ diff localtime.c localtime.c.orig 512d511 < /* 517,518d515 < */ < const char * getqzname P((const char * strp, const char delim)) To compile classictzcode.tar.gz I had to make these changes: $ diff zic.c zic.c.orig 64,65c64 < /*extern int getopt P((int argc, char * argv[], const char * options));*/ < extern int getopt P((int, char *const *, const char *)); --- > extern int getopt P((int argc, char * argv[], const char * options)); and $ diff getopt.c getopt.c.orig 52d51 < /* 57,58d55 < */ < int getopt(int nargc, char *const *nargv, const char *ostr) I hope our findings are useful to you. regards, Andrew Donaldson.

2 1