GNU bug report logs - #32258
27.0.50; Crash on minimizing/maximizing Emacs frame from taskbar [RHEL 6.8 GTK2]

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#32258: closed (27.0.50; Crash on minimizing/maximizing Emacs
 frame from taskbar [RHEL 6.8 GTK2])
Date: Thu, 02 Aug 2018 14:01:02 +0000

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Your message dated Thu, 02 Aug 2018 17:00:00 +0300
with message-id <83muu4vpgf.fsf <at> gnu.org>
and subject line Re: bug#32258: 27.0.50; Crash on minimizing/maximizing Emacs frame from taskbar [RHEL 6.8 GTK2]
has caused the debbugs.gnu.org bug report #32258,
regarding 27.0.50; Crash on minimizing/maximizing Emacs frame from taskbar [RHEL 6.8 GTK2]
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Kaushal Modi <kaushal.modi <at> gmail.com>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: 27.0.50; Crash on minimizing/maximizing Emacs frame from taskbar
 [RHEL 6.8 GTK2]
Date: Tue, 24 Jul 2018 08:06:28 -0400

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Hello,

I have started seeing this crash in the past week I believe.

The crash happens when I randomly minimize/maximize the Emacs frame by
clicking on its tab in the OS taskbar. I am using RHEL 6.8.

I have yet to find a good recipe to recreate this programmatically.

xdisp.c:21236: Emacs fatal error: assertion failed: it->glyph_row == NULL
|| it->glyph_row->used[TEXT_AREA] == 0

Backtrace:
emacs[0x5bd0c2]

...

emacs[0x592ea5]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x32f4c1ed1d]

I'll next attempt to recreate this from gdb.

Here is my Emacs build information.

Emacs version: GNU Emacs 27.0.50 (build 11, x86_64-pc-linux-gnu, GTK+
Version 2.24.23)
 of 2018-07-23, built using commit 57c4bc146b7e17b6f662604047cb5d10982f962c.

./configure options:
  --with-modules --prefix=/home/kmodi/usr_local/apps/6/emacs/master
'--program-transform-name=s/^ctags$/ctags_emacs/'
--enable-checking=yes,glyphs --enable-check-lisp-object-type
'CPPFLAGS=-I/home/kmodi/usr_local/6/include -I/usr/include/freetype2
-I/usr/include' 'CFLAGS=-ggdb3 -O0' 'CXXFLAGS=-ggdb3 -O0'
'LDFLAGS=-L/home/kmodi/usr_local/6/lib -L/home/kmodi/usr_local/6/lib64
-ggdb3'

Features:
  XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS
GTK2 X11 MODULES THREADS

-- 

Kaushal Modi

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Kaushal Modi <kaushal.modi <at> gmail.com>
Cc: 32258-done <at> debbugs.gnu.org
Subject: Re: bug#32258: 27.0.50; Crash on minimizing/maximizing Emacs frame
 from taskbar [RHEL 6.8 GTK2]
Date: Thu, 02 Aug 2018 17:00:00 +0300

> From: Kaushal Modi <kaushal.modi <at> gmail.com>
> Date: Wed, 1 Aug 2018 15:21:56 -0400
> Cc: 32258 <at> debbugs.gnu.org
> 
> An update. My emacs sessions haven't crashed after that experimental fix. Also, I didn't see any adverse
> effects because of that. 

OK, I've now pushed the change to the emacs-26 branch, and I'm closing
the bug.  Thanks for testing.

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