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From: Rich Felker <dalias@libc.org>
To: Alexander Weps <exander77@pm.me>
Cc: musl@lists.openwall.com, Daniel Gutson <danielgutson@gmail.com>,
	Markus Wichmann <nullplan@gmx.net>
Subject: Re: [musl] Broken mktime calculations when crossing DST boundary
Date: Sun, 24 Mar 2024 14:02:00 -0400	[thread overview]
Message-ID: <20240324180200.GW4163@brightrain.aerifal.cx> (raw)
In-Reply-To: <0_9-JV2MW3avVvzhE9vjqKqCX0fEZy0uUuZKIohFGEFDBY912nwZyxZe560H0cf_b8L2gD8e0eUAUp2Q3e1rmra3XEppx9HPhhFeulwLYZA=@pm.me>

On Sun, Mar 24, 2024 at 05:12:35PM +0000, Alexander Weps wrote:
> Adding seconds cannot make time go backwards. If that is how it was
> interpreted, than the interpretation is erroneous.

And subtracting seconds can't make time go forwards, but that's what
would happen with the alternate interpretation you want.

There is fundamentally no way for the interface to read your mind and
know that the time you requested is "move forward from a past valid
normalized time" and not "move backward from a future valid normalized
time".

Rich

  parent reply	other threads:[~2024-03-24 18:01 UTC|newest]

Thread overview: 76+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
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 [this message]
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
  -- strict thread matches above, loose matches on Subject: below --
2024-03-22 19:56 Alexander Weps
2024-03-23  6:41 ` Markus Wichmann
     [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

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