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From: Markus Wichmann <nullplan@gmx.net>
To: musl@lists.openwall.com
Cc: David Steele <david@pgbackrest.org>
Subject: Re: [musl] Possible issue formatting epoch time with strftime()
Date: Tue, 3 Jun 2025 17:03:35 +0200	[thread overview]
Message-ID: <aD8Ox7DFbYB6JJkG@voyager> (raw)
In-Reply-To: <70c350e5-78cd-4ab9-ae9b-598179ee4f8e@pgbackrest.org>

Am Mon, Jun 02, 2025 at 07:33:41PM +0000 schrieb David Steele:
> Ubuntu 22.04 (UTC) gcc:
> 
> local epoch: 1573222014
> utc epoch: 1573240014
> local time: 20191108-090654
> utc time: 20191108-140654
> 
> [...]
> 
> Alpine 3.21 (America/New_York or UTC) gcc/musl:
> 
> local epoch: 1573222014
> utc epoch: 1573222014        <------
> local time: 20191108-090654
> utc time: 20191108-140654
> 

I think what happened here is that musl is currently implementing
non-standard extension behavior that is no longer conforming as of last
year. My reading of POSIX-2024 is that strftime() is to treat the
incoming timestamp as local time, at least for the purpose of a %s
conversion.  Which it isn't at the moment. But POSIX-2018 did not
specify %s at all, so musl was allowed to do whatever until POSIX-2024.

Ciao,
Markus

       reply	other threads:[~2025-06-03 15:04 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <70c350e5-78cd-4ab9-ae9b-598179ee4f8e@pgbackrest.org>
2025-06-03 15:03 ` Markus Wichmann [this message]
2025-06-03 21:52   ` David Steele

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