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bug#45156: 28.0.50; Segfault due to glyph_row being set to NULL
From: |
Stefan Kangas |
Subject: |
bug#45156: 28.0.50; Segfault due to glyph_row being set to NULL |
Date: |
Thu, 10 Dec 2020 02:35:52 -0600 |
Torsten Bronger <bronger@physik.rwth-aachen.de> writes:
> I see Emacs segfaulting when moving the cursor upwards in a LaTeX
> document while tex-fold-mode is active. The starting position of the
> cursor is important.
>
> I placed all files to reproduce the bug at
> <http://wilson.bronger.org/emacs-glyph_row-bug.tar>. The TeX file needs
I've attached the relevant file test.tex here.
> to be put in /tmp. tex-fold-mode must be present. Furthermore, place
> .emacs and .emacs.desktop in the proper positions, start current Git
> Emacs, and press the "cursor up" button. Then, Emacs crashes for me.
Here are the steps I followed:
0. Install auctex
1. Put test.tex in /tmp
2. emacs -Q
3. C-x C-f /tmp/test.tex
4. <up>
But I did not see any crash. Are any other steps needed to reproduce
this?
Could you also produce a backtrace of the problem? You can find
instructions for doing that by typing `C-h C-d'. Don't forget to
rebuild Emacs with debugging symbols first.
> The subject of this bug is just to give it a name. I do not know
> whether glyph_row is the issue. However, I bisected the problem, and it
> started with commit f425a774, which sets glyph_row to NULL in two
> places. If I revert this commit, the problem is gone.
test.tex
Description: Text Data