bug#12645: 24.2.50; hang in redisplay

bug#12645: 24.2.50; hang in redisplay

[Yagnesh Raghava Yakkala]

Using Emacs from trunk (built two days ago) 
Emacs is hanging in python shell buffer

emacs -Q test.py
C-c C-z (start a shell switch to)

now Emacs hangs. I have to press C-g to getout of hanging. (infinite-loop)

the message buffer has the Following

--8<---------------cut here---------------start------------->8---
For information about GNU Emacs and the GNU system, type C-h C-a.
(New file)
Can't guess python-indent-offset, using defaults: 4
Make dedicated process? (y or n)  y
Sent python-shell-completion-setup-code
Sent python-ffap-setup-code
Sent python-eldoc-setup-code
Error during redisplay: (jit-lock-function 1) signaled (quit)
--8<---------------cut here---------------end--------------->8---

even once you enter into the shell, every time you press RET it will go hang
need to press C-g at least three times to get back the control.

message buffer updates to another line (with different counter)
Error during redisplay: (jit-lock-function 170) signaled (quit)

Thanks



In GNU Emacs 24.2.50.7 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.1)
 of 2012-10-13 on okhotsk19
Windowing system distributor `The X.Org Foundation', version 11.0.10706000
System Description:	Ubuntu 10.04.4 LTS

Configured using:
 `configure '--prefix=/home/yagnesh/local/emacs-f55ea44'
 '--without-compress-info' 'CFLAGS=-g -O0''

Important settings:
  value of $LC_COLLATE: en_US.UTF-8
  value of $LC_CTYPE: en_US.UTF-8
  value of $LC_MESSAGES: en_US.UTF-8
  value of $LANG: C
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  diff-auto-refine-mode: t
  goto-address-prog-mode: t
  flyspell-mode: t
  eldoc-mode: t
  global-edit-server-edit-mode: t
  highlight-parentheses-mode: t
  hl-sexp-mode: t
  paredit-mode: t
  winner-mode: t
  shell-dirtrack-mode: t
  recentf-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  global-auto-complete-mode: t
  auto-complete-mode: t
  autopair-global-mode: t
  ido-everywhere: t
  display-time-mode: t
  show-paren-mode: t
  global-ede-mode: t
  ede-minor-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-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

Recent input:
C-/ C-/ C-x C-s C-k C-n C-p C-p C-p C-p C-k C-k C-x 
C-s C-x C-b p p p <return> <down-mouse-4> <mouse-4> 
<double-down-mouse-4> <double-mouse-4> <triple-down-mouse-4> 
<triple-mouse-4> <down-mouse-5> <mouse-5> <double-down-mouse-5> 
<double-mouse-5> <down-mouse-1> <mouse-1> C-h v M-p 
M-p <return> C-x o <tab> <tab> <tab> <tab> <return> 
<help-echo> <down-mouse-1> <mouse-1> <down-mouse-1> 
<mouse-1> <help-echo> <help-echo> <down-mouse-1> <mouse-1> 
<help-echo> <help-echo> C-x o <return> C-p <return> 
C-y C-x C-e C-x C-b n n n <return> S W <f1> <f1> M-x 
d 3 e <backspace> <backspace> <return> y C-x C-b g 
<return> C-n C-n C-b C-b C-p C-b C-b C-b C-b C-b C-b 
C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b 
C-b C-b C-b C-b C-b C-b <backspace> C-M-x <f1> p p 
n n <return> S W M-k C-g M-x <return> y y <f1> C-x 
C-b n n p <return> C-n C-b C-b C-b C-b C-b C-b C-b 
C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b 
C-b C-b C-b C-b <backspace> <backspace> <backspace> 
C-x o C-x b h e <return> <tab> <tab> <return> ` ` <tab> 
<tab> <tab> <tab> <return> <tab> <tab> <tab> <return> 
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-x o M-x e m a <backspace> <backspace> 
<backspace> r e p o <return> e m a c s SPC h a n g 
s SPC i n SPC p y t h o n - <backspace> SPC s h e l 
l SPC b u f f e r SPC ( C-y <backspace> M-b M-b M-b 
M-b M-b M-b M-f M-f M-f M-f M-f M-d C-d M-b M-b M-b 
M-b M-b M-b M-b M-b C-SPC C-e C-b M-w C-a C-k C-g <C-tab> 
<down-mouse-1> <mouse-movement> <mouse-1> <down-mouse-1> 
<mouse-1> M-x e m a <backspace> <backspace> <backspace> 
<return>

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Features:
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x-toolkit x multi-tty emacs)

-- 
ఎందరో మహానుభావులు అందరికి వందనములు
YYR

bug#12645: 24.2.50; hang in redisplay

[Eli Zaretskii]

> From: Yagnesh Raghava Yakkala <hi@yagnesh.org>
> Date: Sun, 14 Oct 2012 20:08:13 +0900
> 
> Using Emacs from trunk (built two days ago) 
> Emacs is hanging in python shell buffer
> 
> emacs -Q test.py
> C-c C-z (start a shell switch to)
> 
> now Emacs hangs. I have to press C-g to getout of hanging. (infinite-loop)

I don't get a hang, I get a prompt in the minibuffer asking how to run
Python.  Am I missing something?

If you attach GDB to Emacs when it is inflooping, what backtrace do
you see?

bug#12645: 24.2.50; hang in redisplay

[Glenn Morris]

Reproducible for me on RHEL 6.2.

If I disable global-font-lock-mode first, it works fine. I get
an inferior python mode buffer with contents:

Python 2.6.6 (r266:84292, Sep 11 2012, 05:25:09) 
[GCC 4.4.6 20120305 (Red Hat 4.4.6-4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
py> py> py> py> 

Enabling font-lock mode here leads to a hang, so presumably there is
something pathological in the python font-lock keywords.


PS Fabian, you seem to be using an invalid email address in your
ChangeLog entries (may or may not be intentional?).

bug#12645: 24.2.50; hang in redisplay

[Glenn Morris]

Works if set syntax-propertize-function to nil, so presumably it's this:

http://lists.gnu.org/archive/html/emacs-diffs/2012-10/msg00229.html

bug#12645: 24.2.50; hang in redisplay

[Michael Welsh Duggan]

This particular problem is bugging me quite a bit.  It makes inferior
python mode useless to me.  The behavior for me is this:

emacs -Q
M-x run-python

At this point, emacs hangs at 100% on one CPU.  After C-g I am in a
*Python* Inferior Python buffer.  At this point if I type a python
expression (4, for example), emacs hangs.  I have to type C-g at least 3
times in order to get the return value.  Note the type of messages I get
when typing C-g in "Recent messages" below:

In GNU Emacs 24.2.50.1 (i686-pc-linux-gnu, GTK+ Version 2.10.4)
 of 2012-10-23 on waterbuck.yellow.cert.org
Bzr revision: 110636 eliz@gnu.org-20121023170955-zl2nl98d2gatetjp
Windowing system distributor `The X.Org Foundation', version 11.0.70101000
System Description:	Red Hat Enterprise Linux Server release 5.8 (Tikanga)

Configured using:
 `configure '--prefix=/home/mwd' '--without-toolkit-scroll-bars'
 '--with-gif=no' 'CFLAGS=-ggdb3 -O0''

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Sent python-shell-completion-setup-code
Sent python-ffap-setup-code
Sent python-eldoc-setup-code
Error during redisplay: (jit-lock-function 1) signaled (quit)
Error during redisplay: (jit-lock-function 216) signaled (quit)
Error during redisplay: (jit-lock-function 248) signaled (quit)
Error during redisplay: (jit-lock-function 402) signaled (quit)
Error during redisplay: (jit-lock-function 410) signaled (quit)

-- 
Michael Welsh Duggan
(mwd@cert.org)

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Fabián Ezequiel Gallina]

This is fixed in the emacs-24 branch.

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Glenn Morris]

Fabián Ezequiel Gallina wrote:

> This is fixed in the emacs-24 branch.

By what change?
It still hangs for me in exactly the same way, and I don't see any
changes to python.el in emacs-24 or trunk since 2012-10-12's change to
python-mode-map.

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Michael Welsh Duggan]

Glenn Morris <rgm@gnu.org> writes:

> Fabián Ezequiel Gallina wrote:
>
>> This is fixed in the emacs-24 branch.
>
> By what change?
> It still hangs for me in exactly the same way, and I don't see any
> changes to python.el in emacs-24 or trunk since 2012-10-12's change to
> python-mode-map.

I confirm that with a very recent check-out (110769
eliz@gnu.org-20121102140045-8v612pvgbe65721k) this problem still exists
for me.

-- 
Michael Welsh Duggan
(mwd@cert.org)

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Michael Welsh Duggan]

Michael Welsh Duggan <mwd@cert.org> writes:

> Glenn Morris <rgm@gnu.org> writes:
>
>> Fabián Ezequiel Gallina wrote:
>>
>>> This is fixed in the emacs-24 branch.
>>
>> By what change?
>> It still hangs for me in exactly the same way, and I don't see any
>> changes to python.el in emacs-24 or trunk since 2012-10-12's change to
>> python-mode-map.
>
> I confirm that with a very recent check-out (110769
> eliz@gnu.org-20121102140045-8v612pvgbe65721k) this problem still exists
> for me.

I have also verified that it still is not fixed (for me, anyway) in both
trunk and the emacs-24 branch.

-- 
Michael Welsh Duggan
(mwd@cert.org)

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Fabián Ezequiel Gallina]

On 11/02/2012 01:53 PM, Michael Welsh Duggan wrote:
> Michael Welsh Duggan <mwd@cert.org> writes:
>
>> Glenn Morris <rgm@gnu.org> writes:
>>
>>> Fabián Ezequiel Gallina wrote:
>>>
>>>> This is fixed in the emacs-24 branch.
>>> By what change?
>>> It still hangs for me in exactly the same way, and I don't see any
>>> changes to python.el in emacs-24 or trunk since 2012-10-12's change to
>>> python-mode-map.
>> I confirm that with a very recent check-out (110769
>> eliz@gnu.org-20121102140045-8v612pvgbe65721k) this problem still exists
>> for me.
> I have also verified that it still is not fixed (for me, anyway) in both
> trunk and the emacs-24 branch.
>
Seems I'm having a problem with the bzr-git plugin that prevented my 
commit, I'll check this and recommit later today or tomorrow.


Sorry about that.

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Fabián Ezequiel Gallina]

On 11/02/2012 01:53 PM, Michael Welsh Duggan wrote:
> Michael Welsh Duggan <mwd@cert.org> writes:
>
>> Glenn Morris <rgm@gnu.org> writes:
>>
>>> Fabián Ezequiel Gallina wrote:
>>>
>>>> This is fixed in the emacs-24 branch.
>>> By what change?
>>> It still hangs for me in exactly the same way, and I don't see any
>>> changes to python.el in emacs-24 or trunk since 2012-10-12's change to
>>> python-mode-map.
>> I confirm that with a very recent check-out (110769
>> eliz@gnu.org-20121102140045-8v612pvgbe65721k) this problem still exists
>> for me.
> I have also verified that it still is not fixed (for me, anyway) in both
> trunk and the emacs-24 branch.
>
the bzr-git plugin broke my bzr installation and even if it shows the 
commit as pushed it didn't worked at all, I'll get back to this later 
today. Sorry about that.

-- 
Fabián E. Gallina
Co-Founder of Anue
Skype: caffeineGalli
http://www.anue.biz/

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Eli Zaretskii]

> Date: Fri, 02 Nov 2012 14:32:05 -0300
> From: Fabián Ezequiel Gallina <fabian@anue.biz>
> Cc: 12645@debbugs.gnu.org
> 
> the bzr-git plugin broke my bzr installation and even if it shows the 
> commit as pushed it didn't worked at all

Where were you pushing that you needed bzr-git for that?

AFAIK, bzr-git doesn't support pushing to git repositories, but I
don't understand why you'd need to push to a git repo anyway.

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Fabián Ezequiel Gallina]

On 11/02/2012 02:57 PM, Eli Zaretskii wrote:
>> Date: Fri, 02 Nov 2012 14:32:05 -0300
>> From: Fabián Ezequiel Gallina <fabian@anue.biz>
>> Cc: 12645@debbugs.gnu.org
>>
>> the bzr-git plugin broke my bzr installation and even if it shows the
>> commit as pushed it didn't worked at all
> Where were you pushing that you needed bzr-git for that?
>
> AFAIK, bzr-git doesn't support pushing to git repositories, but I
> don't understand why you'd need to push to a git repo anyway.
No, it's not that I was using the plugin for anything, I had it 
installed since a long time and yesterday caused the problem.

Anyways, this is pushed in revno 110771.

bug#12645: 24.2.50; Hang in jit-lock after "M-x run-python"

[Michael Welsh Duggan]

Fabián Ezequiel Gallina <fabian@anue.biz> writes:

> On 11/02/2012 02:57 PM, Eli Zaretskii wrote:
>>> Date: Fri, 02 Nov 2012 14:32:05 -0300
>>> From: Fabián Ezequiel Gallina <fabian@anue.biz>
>>> Cc: 12645@debbugs.gnu.org
>>>
>>> the bzr-git plugin broke my bzr installation and even if it shows the
>>> commit as pushed it didn't worked at all
>> Where were you pushing that you needed bzr-git for that?
>>
>> AFAIK, bzr-git doesn't support pushing to git repositories, but I
>> don't understand why you'd need to push to a git repo anyway.
> No, it's not that I was using the plugin for anything, I had it 
> installed since a long time and yesterday caused the problem.
>
> Anyways, this is pushed in revno 110771.

I can confirm that this fixes the problem for me.

-- 
Michael Welsh Duggan
(mwd@cert.org)