bug#44047: closed (current HEAD has been crashing on startup)

[GNU bug Tracking System]

Your message dated Sun, 01 Nov 2020 17:34:43 +0200
with message-id <83o8khf5v0.fsf@gnu.org>
and subject line Re: bug#44047: current HEAD has been crashing on startup
has caused the debbugs.gnu.org bug report #44047,
regarding current HEAD has been crashing on startup
to be marked as done.

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-- 
44047: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=44047
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> --- Begin Message ---
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> Subject: 
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> current HEAD has been crashing on startup
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> Date: 
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> Sat, 17 Oct 2020 11:06:23 -0600 (MDT)
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> User-agent: 
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> Alpine 2.20 (DEB 67 2015-01-07)
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>
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>
> I waited a few days before reporting this because I'm not sure how much 
> useful information I can provide in this report, but it hasn't been 
> mentioned by anyone else, so here goes.
>
> Running ./emacs in src/ within gdb (invoking it with -Q), I'm getting:
>
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
>
> Program received signal SIGSEGV, Segmentation fault.
>
> build_frame_matrix_from_leaf_window (w=0x555555b8c140,
>     frame_matrix=<optimized out>) at dispnew.c:2531
> 2531          fill_up_frame_row_with_spaces (frame_row, 
> window_matrix->matrix_x);
>
> This is on a Linux 5.7 kernel, Debian unstable, x86-64, but I can 
> replicate it on a raspi running 5.4 and stable.
>
> It appears to be related to -nw somehow; using that triggers the crash on 
> the Pi (otherwise it starts up normally).
>
> On the first machine, configure options are "--with-x-toolkit=no 
> --without-x --with-mailutils --enable-link-time-optimization".
>
> I'm sorry I can't be more detailed, but it's kind of hard to run M-x
> report-emacs-bug under the circumstances. I can, of course, test any 
> patches.
>
>
> --
> Liam Stitt
> stittl@cuug.ab.ca
>
>
>
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> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
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> Re: bug#44047: current HEAD has been crashing on startup
>
>
>
>
> Date: 
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> Sun, 01 Nov 2020 17:34:43 +0200
>
>
>
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> > Date: Sun, 1 Nov 2020 06:48:45 -0700 (MST)
> > From: Liam Stitt <stittl@cuug.ab.ca>
> > cc: 44047@debbugs.gnu.org
> > 
> > > Ping!  Any news on this?
> > 
> > Belatedly, yes: the problem spontaneously went away(!), after I 
> > accidentally full-screened my terminal emulator then restored it to 
> > normal size. While I am by no means certain of why that should have
> > such an effect, what digging I have been able to do suggests the
> > explanation might involve (1) a SIGWINCH that operation generated which 
> > (2) caused that particular screen-sessions's bash to set $COLUMNS and 
> > $LINES, which were previously nonextant.
> > 
> > I haven't been able to replicate the crash since. I can only suggest 
> > closing this bug report for now, and I'll reopen it if I manage to
> > figure out how to trigger the crash again.
>
> OK, thanks.  Done.
>
>
> --- End Message ---