[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
emacs hangs in c++ font-lock-modeo
From: |
Alan Mackenzie |
Subject: |
emacs hangs in c++ font-lock-modeo |
Date: |
Sat, 16 Apr 2005 16:50:18 +0000 (GMT) |
[cc to bug-cc-mode@gnu.org added.]
>From d.s.farin@tue.nl Fri Apr 15 20:33:22 2005
> Hi,
> I have got a C++ source file that causes "GNU Emacs 21.4.1" (current Debian
> testing) to hang with 100% cpu. To reproduce the bug, load the attached
> source file and turn font-lock-mode on in C++ mode. If you move the cursor
> down, at some position, emacs will hang and accept no more keyboard inputs.
Outch! That's nasty. I had that happen to me a couple of years ago.
I know that everything will still be set up to their defaults, but could
you perhaps give us some more details just the same:
How powerful is your computer? (Processor speed in MHz or GHz).
What version of CC Mode have you got? (M-x c-version)
Did you start your session with "emacs -q --no-site-file"? (I.e. without
your .emacs and any site-lisp.el loaded.) If not, do you still get the
problem when you do?
Does Emacs _always_ hang up, _usually_ hang up or _sometimes_ hang up?
How long does it take after loading the file before it hangs? Does it
free up if you leave it running 8 or 12 hours or more?
How many other buffers have you got loaded at the same time, how big are
they (a few kilobytes, or a few hundred kilobytes), what modes are they
(other C++, perhaps)?
What support mode are you using in font lock? (C-h v
font-lock-support-mode). Probably jit-lock-mode, the default. Does the
problem go away if you use lazy lock instead? (Do M-: (setq
font-lock-support-mode 'lazy-lock-mode) before loading the buffer (or put
the setq in your .emacs, or do the same thing in the pertinent customize
buffer.))
Regards,
Dirk
[OT good news: My city council has just decided to use Debian as the
replacement for MS-Windows on its several thousand desktop PCs. They're
hoping to start rolling it out at the end of this year. :-]
--
Alan Mackenzie (Munich, Germany)
- emacs hangs in c++ font-lock-modeo,
Alan Mackenzie <=