From: Paul Eggert <eggert@cs.ucla.edu>
To: Glenn Morris <rgm@gnu.org>
Cc: 22302-done@debbugs.gnu.org, Harald Hanche-Olsen <hanche@math.ntnu.no>
Subject: bug#22302: 25.1.50; time-stamp ignores time-stamp-time-zone
Date: Tue, 12 Jan 2016 12:19:10 -0800 [thread overview]
Message-ID: <56955FBE.70806@cs.ucla.edu> (raw)
In-Reply-To: <2hd1t63d2d.fsf@fencepost.gnu.org>
On 01/12/2016 09:47 AM, Glenn Morris wrote:
> Please make it so that perfectly reasonable user-input can't crash Emacs.
Sorry, I take it back, in rereading the spec POSIX says merely that the
behavior is unspecified when TZ="UTC", which I understand to mean that
localtime_r should not crash so we don't need to worry about that in
Emacs. However, the user might not get Universal Time, so "UTC0" is
still safer.
This is not an issue for operating systems like GNU/Linux, FreeBSD, OS
X, and Solaris, where "UTC" means the same thing as "UTC0", because
there's a file with a name like /usr/share/zoneinfo/UTC that does the
right thing. I don't know what MS-Windows does with TZ="UTC" but I
expect it works OK there too, otherwise we would have gotten bug reports
before now (as this issue would come up even in older Emacs versions). I
am mostly worried about obscure operating systems like HP-UX that do not
use the tz database and which are not much tested by GNU Emacs developers.
next prev parent reply other threads:[~2016-01-12 20:19 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-04 0:18 bug#22302: 25.1.50; time-stamp ignores time-stamp-time-zone Harald Hanche-Olsen
2016-01-12 4:40 ` Glenn Morris
2016-01-12 17:14 ` Paul Eggert
2016-01-12 17:47 ` Glenn Morris
2016-01-12 20:19 ` Paul Eggert [this message]
2016-01-12 20:51 ` Eli Zaretskii
2016-01-12 21:29 ` Paul Eggert
2016-01-13 15:47 ` Eli Zaretskii
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