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bug#39977: 28.0.50; Unhelpful stack trace
From: |
Eli Zaretskii |
Subject: |
bug#39977: 28.0.50; Unhelpful stack trace |
Date: |
Sat, 14 Mar 2020 12:10:09 +0200 |
> Cc: enometh@meer.net, 39977@debbugs.gnu.org
> From: martin rudalics <rudalics@gmx.at>
> Date: Sat, 14 Mar 2020 09:48:20 +0100
>
> >> In either case sf = NULL; is not TRT but I think you are aware of
> >> that.
> >
> > No, I don't think I'm aware of that. It's just a local variable, so
> > why assigning NULL could not be TRT?
>
> Because it hides the underlying error. The abort in SELECTED_FRAME is
> there so we can find its cause and that's why I said you are aware of
> it. Obviously, we can set it to NULL to avoid an abort when, as in the
> case at hand, we construct the mode line or the frame title. But in
> general doing such a thing in select_window is not TRT. At least that's
> what I learned from you.
My understanding of the scenario in this report was that the value of
selected_frame didn't have time to become updated before redisplay
kicked in. If you think the problem is elsewhere, I'm okay with
leaving this crash in emacs-27 until we understand the cause of that
and fix it elsewhere. I just hope you will have the solution quickly
enough to not release Emacs 27 with this crash.
Thanks.
- bug#39977: 28.0.50; Unhelpful stack trace, Madhu, 2020/03/07
- bug#39977: 28.0.50; Unhelpful stack trace, Eli Zaretskii, 2020/03/07
- bug#39977: 28.0.50; Unhelpful stack trace, Eli Zaretskii, 2020/03/13
- bug#39977: 28.0.50; Unhelpful stack trace, martin rudalics, 2020/03/13
- bug#39977: 28.0.50; Unhelpful stack trace, Eli Zaretskii, 2020/03/13
- bug#39977: 28.0.50; Unhelpful stack trace, martin rudalics, 2020/03/14
- bug#39977: 28.0.50; Unhelpful stack trace,
Eli Zaretskii <=
- bug#39977: 28.0.50; Unhelpful stack trace, martin rudalics, 2020/03/14
- bug#39977: 28.0.50; Unhelpful stack trace, martin rudalics, 2020/03/14
- bug#39977: 28.0.50; Unhelpful stack trace, Eli Zaretskii, 2020/03/14
- bug#39977: 28.0.50; Unhelpful stack trace, martin rudalics, 2020/03/15
- bug#39977: 28.0.50; Unhelpful stack trace, Eli Zaretskii, 2020/03/15
- bug#39977: 28.0.50; Unhelpful stack trace, martin rudalics, 2020/03/16
- bug#39977: 28.0.50; Unhelpful stack trace, Eli Zaretskii, 2020/03/16
- bug#39977: 28.0.50; Unhelpful stack trace, martin rudalics, 2020/03/17
- bug#39977: 28.0.50; Unhelpful stack trace, Eli Zaretskii, 2020/03/17
- bug#39977: 28.0.50; Unhelpful stack trace, martin rudalics, 2020/03/17