Date: Sun, 24 Sep 2000 11:51:01 +0100 From: Mark Ovens <marko@freebsd.org> To: Joao Carlos Mendes Luis <jonny@jonny.eng.br> Cc: questions@freebsd.org Subject: Re: mktime(3) Y2K bug? Message-ID: <20000924115101.A252@parish> In-Reply-To: <39CD8FD9.F2B7419@jonny.eng.br>; from jonny@jonny.eng.br on Sun, Sep 24, 2000 at 02:23:37AM -0300 References: <39CD8FD9.F2B7419@jonny.eng.br>
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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 > Hmm, what version of FreeBSD? It works OK for me on 4.1-STABLE: /usr/marko{52}% cat > foo.c #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 ) ); } /usr/marko{53}% cc -o foo foo.c /usr/marko{54}% ./foo t = 970354860 Sun Oct 1 00:01:00 2000 /usr/marko{55}% > 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 > > -- > João Carlos Mendes Luís 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 -- 4.4 - The number of the Beastie ________________________________________________________________ 51.44°N FreeBSD - The Power To Serve http://www.freebsd.org 2.057°W My Webpage http://ukug.uk.freebsd.org/~mark mailto:marko@freebsd.org http://www.radan.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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