Date: Wed, 2 Oct 2002 09:50:26 -0700 (PDT) From: Ben Burke <ben@dubuque365.com> To: freebsd-gnats-submit@FreeBSD.org Subject: bin/43592: mktime rejects dates at the start of daylight savings time Message-ID: <200210021650.g92GoQtZ047931@www.freebsd.org>
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>Number: 43592 >Category: bin >Synopsis: mktime rejects dates at the start of daylight savings time >Confidential: no >Severity: serious >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Oct 02 10:00:09 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Ben Burke >Release: 4.6-STABLE >Organization: Iowa365 >Environment: FreeBSD watchtower.office.parksmediagroup.com 4.6-STABLE FreeBSD 4.6-STABLE #0: Mon Sep 2 06:57:32 CDT 2002 root@mymachine:/usr/src/sys/compile/BEN.2002.09.02.R1 i386 >Description: FreeBSD's mktime behavior for the "missing" hour at the start of daylight savings time is to return -1. Other OSes that I use and have tested compensate for this gap. The short program below shows the leap from 1 AM to -1 on FreeBSD, and from 1 AM to 3 AM on Linux or OSX. >How-To-Repeat: Compile the short C++ program below and run. #include <iostream.h> #include <time.h> int main() { struct tm date1; date1.tm_sec = 0; /* seconds (0 - 60) */ date1.tm_min = 0; /* minutes (0 - 59) */ date1.tm_hour = 2; /* hours (0 - 23) */ date1.tm_mday = 4; /* day of month (1 - 31) */ date1.tm_mon = 3; /* month of year (0 - 11) */ date1.tm_year = 104; /* year - 1900 */ cout << mktime(&date1) << "\n"; /* An hour later */ struct tm date2; date2.tm_sec = 0; /* seconds (0 - 60) */ date2.tm_min = 0; /* minutes (0 - 59) */ date2.tm_hour = 3; /* hours (0 - 23) */ date2.tm_mday = 4; /* day of month (1 - 31) */ date2.tm_mon = 3; /* month of year (0 - 11) */ date2.tm_year = 104; /* year - 1900 */ date1.tm_isdst = -1; /* year - 1900 */ cout << mktime(&date2) << "\n"; } >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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