GNU bug report logs - #2758
23.0.60; Using Tab in gdb freezes emacs

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Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Martin Puster <martin.puster <at> gmail.com>
To: emacs-pretest-bug <at> gnu.org
Subject: 23.0.60; Using Tab in gdb freezes emacs
Date: Mon, 23 Mar 2009 21:56:51 +0100

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug <at> gnu.org  
mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

##
My installation of emacs is standard macports-version (via sudo port  
install emacs-app-devel)
if I use the Tab-key in gdb, it freezes my emacs. It then does not  
react to any other keyboard input, while the menu is acessible,  
although i chosen commands (as the gdb-commands, or tools-commands or  
options) are not carried out after clicking on them. Anyway, I'm able  
to quit emacs using the menu, emacs even asks me if i want to kill  
running processes (gdb). The bug is reproduceable, it occurs even  
without any other files loaded, so the shortest way to reach it is:

M-x gdb , and then pressing Tab

But it occured also in "real life" situations, debugging a C-program.
The bug didnt occur in the emacs-app version 9.0rc3.

Please write 3 words if this report was any good, as it's my first  
one. And thx for your great deeds developing emacs!

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/Applications/MacPorts/Emacs.app/Contents/Resources/etc/DEBUG for  
instructions.


In GNU Emacs 23.0.60.1 (i386-apple-darwin9.6.0, NS apple-appkit-949.43)
 of 2009-03-05 on zauberbuch
Windowing system distributor `Apple', version 10.3.949
configured using `configure  '--prefix=/opt/local' '--with-ns' 'CC=/ 
usr/bin/gcc-4.0' 'CFLAGS=-O2' 'LDFLAGS=-L/opt/local/lib' 'CPPFLAGS=-I/ 
opt/local/include' 'CPP=/usr/bin/cpp-4.0''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: de_AT.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Help

Minor modes in effect:
  desktop-save-mode: t
  global-linum-mode: t
  linum-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  view-mode: t

Message #12 received at 2758 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Adrian Robert <adrian.b.robert <at> gmail.com>
To: 2758 <at> debbugs.gnu.org
Cc: Martin Puster <martin.puster <at> gmail.com>
Subject: Re: Using Tab in gdb freezes emacs
Date: Sun, 31 May 2009 22:59:18 +0700

http://debbugs.gnu.org/cgi/bugreport.cgi?bug=2758

Pressing Ctrl-g (emacs quit/abort key) restores responsiveness.  But  
it probably shouldn't hang.

Message #15 received at 2758 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> gnu.org>
To: Martin Puster <martin.puster <at> gmail.com>
Cc: 2758 <at> debbugs.gnu.org
Subject: Re: 23.0.60; Using Tab in gdb freezes emacs
Date: Mon, 26 Dec 2011 15:59:41 +0800

> My installation of emacs is standard macports-version (via sudo port
> install emacs-app-devel) if I use the Tab-key in gdb, it freezes my
> emacs. It then does not react to any other keyboard input, while the
> menu is acessible, although i chosen commands (as the gdb-commands, or
> tools-commands or options) are not carried out after clicking on
> them. Anyway, I'm able to quit emacs using the menu, emacs even asks
> me if i want to kill running processes (gdb).

I've just committed a change to the development trunk that fixes such a
bug (revno 106732).  If you are following the trunk, and still see this
problem occurring after the fix, please reopen the bug.

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