From: Markus Wichmann <nullplan@gmx.net>
To: musl@lists.openwall.com
Cc: Alexander Weps <exander77@pm.me>
Subject: Re: [musl] Broken mktime calculations when crossing DST boundary
Date: Sat, 23 Mar 2024 07:41:50 +0100 [thread overview]
Message-ID: <Zf55rr1jh8g7HJR2@voyager> (raw)
In-Reply-To: <IGOThaBbQ5xnPGl1MXBDvGHznS3Ca6DQxxYzxIfBi2ixgXUGJradw6NwoqExVkjVdTf-y_MmdlB09u4OPlDFqtGl1YP2RSK1cuH9LdXM7LM=@pm.me>
[-- Attachment #1: Type: text/plain, Size: 423 bytes --]
Hi,
can you send a reproducer? I have written the attached program, and
cannot see the issue. I have tried both the zoneinfo file and the POSIX
TZ.
$ TZ=Europe/Prague ./foo 2024 3 31 1 58 00
before: 2024-03-31 01:58:00 CET
after: 2024-03-31 03:00:00 CEST
$ TZ=CET-1CEST,M3.5.0,M10.5.0/3 ./foo 2024 3 31 1 58 00
before: 2024-03-31 01:58:00 CET
after: 2024-03-31 03:00:00 CEST
What are you doing different?
Ciao,
Markus
[-- Attachment #2: foo.c --]
[-- Type: text/x-csrc, Size: 712 bytes --]
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(int argc, char *argv[])
{
time_t t;
struct tm tm = {0};
char buf[64];
if (argc < 7) {
fprintf(stderr, "Usage: %s year month day hour minute second\n");
return EXIT_FAILURE;
}
tm.tm_year = atoi(argv[1]) - 1900;
tm.tm_mon = atoi(argv[2]) - 1;
tm.tm_mday = atoi(argv[3]);
tm.tm_hour = atoi(argv[4]);
tm.tm_min = atoi(argv[5]);
tm.tm_sec = atoi(argv[6]);
mktime(&tm);
strftime(buf, sizeof buf, "%F %T %Z", &tm);
printf("before: %s\n", buf);
tm.tm_min += 2;
mktime(&tm);
strftime(buf, sizeof buf, "%F %T %Z", &tm);
printf("after: %s\n", buf);
return 0;
}
next prev parent reply other threads:[~2024-03-23 6:42 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-22 19:56 Alexander Weps
2024-03-23 6:41 ` Markus Wichmann [this message]
[not found] ` <528SeRFaPfDw7fA4kqKDlio1U4RB_t9nmUemPcWw9_t1e2hBDpXYFmOqxAC37szgYvAVtmTuXWsmT64SSN3cSQFVdrQqXUAgkdTMPZQ0bg0=@pm.me>
2024-03-23 10:38 ` Markus Wichmann
2024-03-23 11:59 ` Alexander Weps
2024-03-23 12:00 ` Alexander Weps
2024-03-23 12:31 ` Rich Felker
2024-03-23 13:49 ` Alexander Weps
2024-03-23 15:31 ` Rich Felker
2024-03-23 16:54 ` Alexander Weps
2024-03-23 18:57 ` Alexander Weps
2024-03-23 19:33 ` Alexander Weps
2024-03-23 20:18 ` Rich Felker
2024-03-23 20:40 ` Alexander Weps
2024-03-24 0:36 ` Eric Pruitt
2024-03-24 2:04 ` Rich Felker
2024-03-24 3:32 ` Daniel Gutson
2024-03-24 11:05 ` Alexander Weps
2024-03-24 13:24 ` Alexander Weps
2024-03-23 12:01 ` Alexander Weps
2024-03-24 13:36 Alexander Weps
2024-03-24 16:59 ` Alexander Weps
2024-03-24 17:04 ` Rich Felker
2024-03-24 17:12 ` Alexander Weps
2024-03-24 18:00 ` Alexander Weps
2024-03-24 18:02 ` Rich Felker
2024-03-24 18:16 ` Alexander Weps
2024-03-24 18:24 ` Rich Felker
2024-03-24 18:36 ` Alexander Weps
2024-03-24 19:01 ` Joakim Sindholt
2024-03-24 19:05 ` Alexander Weps
2024-03-24 19:06 ` Alexander Weps
2024-03-24 19:13 ` Alexander Weps
2024-03-24 19:13 ` Alexander Weps
2024-03-24 19:22 ` Rich Felker
2024-03-24 19:57 ` Alexander Weps
2024-03-24 20:22 ` Rich Felker
2024-03-24 20:50 ` Alexander Weps
2024-03-24 21:43 ` Alexander Weps
2024-03-24 23:51 ` Thorsten Glaser
2024-03-25 0:36 ` Alexander Weps
2024-03-25 11:52 ` Alexander Weps
2024-03-25 12:21 ` Rich Felker
2024-03-25 12:55 ` Alexander Weps
2024-03-25 13:08 ` Rich Felker
2024-03-25 13:13 ` Alexander Weps
2024-03-25 13:13 ` Rich Felker
2024-03-25 13:24 ` Alexander Weps
2024-03-25 13:42 ` Rich Felker
2024-03-25 13:48 ` Alexander Weps
2024-03-25 13:50 ` Alexander Weps
2024-03-25 18:02 ` Rich Felker
2024-03-25 18:28 ` Alexander Weps
2024-03-25 18:53 ` Rich Felker
2024-03-25 18:57 ` Alexander Weps
2024-03-25 19:38 ` Rich Felker
2024-03-25 19:47 ` Rich Felker
2024-03-25 20:05 ` Alexander Weps
2024-03-25 20:12 ` Alexander Weps
2024-03-25 20:00 ` Alexander Weps
2024-03-25 20:23 ` Rich Felker
2024-03-25 20:31 ` Rich Felker
2024-03-25 23:19 ` Thorsten Glaser
2024-03-25 23:16 ` Thorsten Glaser
2024-03-25 13:44 ` Alexander Weps
2024-03-25 22:40 ` Thorsten Glaser
2024-03-25 22:59 ` Alexander Weps
2024-03-25 23:34 ` Thorsten Glaser
2024-03-26 12:45 ` Alexander Weps
2024-03-26 21:59 ` Thorsten Glaser
2024-03-27 0:14 ` Alexander Weps
2024-03-27 0:38 ` Alexander Weps
2024-03-27 1:35 ` Thorsten Glaser
2024-03-27 2:45 ` Alexander Weps
2024-03-27 4:42 ` Thorsten Glaser
2024-03-26 18:56 ` Alexander Weps
2024-03-25 23:13 ` Rich Felker
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