From: Alan Mackenzie <acm@muc.de>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 10664@debbugs.gnu.org
Subject: bug#10664: 24.0.93; JIT font-lock infloops in a C file
Date: Tue, 7 Feb 2012 19:20:33 +0000 [thread overview]
Message-ID: <20120207192032.GA17530@acm.acm> (raw)
In-Reply-To: <83wr7zc2r2.fsf@gnu.org>
Hi, Eli.
I've done a binary chop on this, and the following revision made this bug
apparent:
revno: 106729
committer: Alan Mackenzie <acm@muc.de>
branch nick: trunk
timestamp: Sat 2011-12-24 19:32:31 +0000
message:
Introduce a mechanism to widen the region used in context font locking.
Use this to protect declarations from losing their contexts.
I'll see what I can work out from this. At least it's one of mine. ;-)
--
Alan Mackenzie (Nuremberg, Germany).
On Mon, Feb 06, 2012 at 07:04:17PM +0200, Eli Zaretskii wrote:
> > Date: Mon, 6 Feb 2012 11:09:57 +0000
> > Cc: 10664@debbugs.gnu.org
> > From: Alan Mackenzie <acm@muc.de>
> > I got something similar for this socket.c. I load it into emacs -Q, then
> > start scrolling downwards, a page at a time. The first five scrolls are
> > fine. Then it hangs on the sixth.
> > However, typing C-g (maybe twice) frees it up, and it does the scroll.
> > Careful perusal reveals that the fontification is incomplete. From now
> > on, most key sequences must be followed by C-g to perform their commands.
> > ;-(.
> > Did you actually try C-g when your session hung?
> I'm quite sure I did. But that was on Windows, where C-g is less
> powerful than on Posix platforms (since keyboard input is not
> interrupt driven). So it could be that what you can interrupt on
> GNU/Linux, I cannot on Windows.
> > I was able to run elp on this, and I've a fairly good idea where it's got
> > stuck, but not yet why.
> Let me know if you need any further help.
> > > > I still have that session in a debugger, so if someone wants me to
> > > > look around and show some values, I can do that.
> > I'm not sure I'd be able to make much out of debugger results. I'm not
> > familiar enough with the internals of Emacs. :-(
> That's good, because I needed to kill that session in order to rebuild
> Emacs.
> > Can you restart this Emacs session?
> No, but I can start another and do the same (i.e. wait for it to hang
> in the same way). The problem is reproducible in my configuration.
> But I think it would be better to wait for you to fix that problem you
> are zeroing in, and then see if it also fixes my hangs.
> Thanks.
next prev parent reply other threads:[~2012-02-07 19:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-30 18:23 bug#10664: 24.0.93; JIT font-lock infloops in a C file Eli Zaretskii
2012-02-05 18:18 ` Eli Zaretskii
2012-02-06 11:09 ` Alan Mackenzie
2012-02-06 14:39 ` Stefan Monnier
2012-02-06 17:04 ` Eli Zaretskii
2012-02-07 17:30 ` Eli Zaretskii
2012-02-07 19:20 ` Alan Mackenzie [this message]
2012-02-07 20:58 ` Eli Zaretskii
2012-02-07 21:34 ` Alan Mackenzie
2012-02-07 23:39 ` Stefan Monnier
2012-02-08 11:47 ` Alan Mackenzie
2012-02-08 17:49 ` Eli Zaretskii
2012-02-08 19:28 ` Stefan Monnier
2012-02-10 11:28 ` Alan Mackenzie
2012-02-12 20:57 ` Eli Zaretskii
2012-02-14 5:42 ` Chong Yidong
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120207192032.GA17530@acm.acm \
--to=acm@muc.de \
--cc=10664@debbugs.gnu.org \
--cc=eliz@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.