From owner-freebsd-questions  Sun Sep 24  3:13:57 2000
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Date: Sun, 24 Sep 2000 14:13:26 +0400
From: Igor Roboul <igor@raduga.dyndns.org>
To: FreeBSD questions <freebsd-questions@freebsd.org>
Subject: Re: mktime(3) Y2K bug?
Message-ID: <20000924141326.A6548@linux.rainbow>
Reply-To: igorr@crosswinds.net
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References: <39CD8FD9.F2B7419@jonny.eng.br>
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In-Reply-To: <39CD8FD9.F2B7419@jonny.eng.br>; from jonny@jonny.eng.br on Sun, Sep 24, 2000 at 02:23:37AM -0300
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I think you have incorrectly configured your system.
On my system (out-of-box):
main()
{
  struct tm tm;
  time_t t;
  
  bzero( &tm, sizeof tm );
  tm.tm_sec = 0;
  tm.tm_min = 1;
  tm.tm_hour = 0;
  tm.tm_mday = 1;
  tm.tm_mon = 9;
  tm.tm_year = 100;
  tm.tm_isdst = -1;
  
  t = mktime( &tm );
  printf( "t = %ld\n", t );
  printf( "%s", ctime( &t ) );
}
%cc t.c
%./a.out 
t = 970344060
Sun Oct  1 00:01:00 2000
%uname -a
FreeBSD darkstar 4.1-STABLE FreeBSD 4.1-STABLE #0: Sat Sep 23 01:23:21 MSD 2000     root@darkstar:/usr/obj/usr/src/sys/DARKSTAR  i386
%


On Sun, Sep 24, 2000 at 02:23:37AM -0300, Joao Carlos Mendes Luis wrote:
> Hi,
> 
>   Try the following piece of code:
> 
> #include <time.h>
> 
> main()
> { 
>   struct tm tm;
>   time_t t;
> 
>   bzero( &tm, sizeof tm );
>   tm.tm_sec = 0;
>   tm.tm_min = 1;
>   tm.tm_hour = 0;
>   tm.tm_mday = 1;
>   tm.tm_mon = 9;
>   tm.tm_year = 100;
>   tm.tm_isdst = -1;
> 
>   t = mktime( &tm );
>   printf( "t = %ld\n", t );
>   printf( "%s", ctime( &t ) );
> }
> 
> 
> My results:
> 
> FreeBSD:
> 
> t = -1
> Wed Dec 31 20:59:59 1969
> 
> Solaris:
> 
> t = 970369260
> Sun Oct  1 00:01:00 2000
> 
> Linux:
> 
> t = -1
> Wed Dec 31 20:59:59 1969
> 
>   If I change tm_year to 99, everything is ok.
> 
>   Is this a bug, or just something stupid I can?t see at 2am without
> enough coffe?
> 
>   I found this executing at(1) as "at 10/01/00", if that matters.
> 
>   TIA,
> 
>                                         Jonny
> 
> -- 
> Jo?o Carlos Mendes Lu?s                 jonny@embratel.net.br
>   Networking Engineer                   jonny@jonny.eng.br
>  Internet via Embratel			jcml@ieee.org
> 
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-questions" in the body of the message

-- 
Igor Roboul, Unix System Administrator & Programmer @ sanatorium "Raduga", 
Sochi, Russia
http://www.brainbench.com/transcript.jsp?pid=304744


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