From: Adam Porter <adam@alphapapa.net>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 28108@debbugs.gnu.org
Subject: bug#28108: 25.2; Infinite loop due to circular marker list?
Date: Thu, 17 Aug 2017 23:06:56 -0500 [thread overview]
Message-ID: <CAO_b3FVS3vP8mV-2kBU+0pgR7zzY-gu81iWHUVUNGhApBK0mFg@mail.gmail.com> (raw)
In-Reply-To: <83wp62dp21.fsf@gnu.org>
Hi Eli,
I'm sorry but that didn't work:
(gdb) define count-markers
Type commands for definition of "count-markers".
End with a line saying just "end".
>set $count = 0
>set $markers = BUF_MARKERS(b)
>while $markers != 0
>set $count = $count + 1
>print $count
>set $markers = $markers->next
>end
>end
(gdb) count-markers
No symbol "BUF_MARKERS" in current context.
I tried to run count-markers after "bt full", "my-step", and "step",
but it still didn't work:
(gdb) step
605 for (tail = BUF_MARKERS (b); tail; prev = &tail->next,
tail = *prev)
(gdb) count-markers
No symbol "BUF_MARKERS" in current context.
Unfortunately I may have to shut down this machine soon. I searched
for "gdb save state" and found some information about
checkpoint/restart, but I'm not sure if that would work or be
appropriate here. I'll try to keep the system up until we can finish
debugging this, but if I can't, I guess we'll be stuck, since I have
no idea how to reproduce it.
By the way, a few minutes ago I got a strange crash in another Emacs
process, a segfault in libtasn1.so.6.2.0. It seemed clipboard-related,
because it happened when I right-clicked on the URL bar in my browser
to paste a link I had copied to the clipboard: the browser froze, a
process used 100% CPU (not sure which one), and then Emacs crashed.
I don't think it's related--at least, not directly--but it is unusual.
Thanks for your help.
On Thu, Aug 17, 2017 at 1:31 PM, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Thu, 17 Aug 2017 18:09:01 +0300
>> From: Eli Zaretskii <eliz@gnu.org>
>> Cc: 28108@debbugs.gnu.org
>>
>> Can you try typing the following command definition, and then running
>> the command? When you run it, does GDB also hang indefinitely?
>>
>> (gdb) define count-markers
>> > set $count = 0
>> > set $markers = BUF_MARKERS(b)
>> > while $markers != 0
>> > set $count = $count + 1
>> > print $count
>> > set $markers = $markers->next
>> > end
>> > end
>> (gdb) count-markers
>
> I just realized that it might be good to say a few more words.
>
> This command will print a long list of increasing numbers, as it walks
> the linked list of buffer markers and counts them. If it never ends,
> you should be able to interrupt it with Ctrl-C, but please do let it
> some serious time to run before you give up. In any case, please tell
> the last number it prints.
>
> Thanks.
next prev parent reply other threads:[~2017-08-18 4:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-16 5:01 bug#28108: 25.2; Infinite loop due to circular marker list? Adam Porter
2017-08-16 14:28 ` Eli Zaretskii
2017-08-16 18:27 ` Adam Porter
2017-08-17 15:09 ` Eli Zaretskii
2017-08-17 18:31 ` Eli Zaretskii
2017-08-18 4:06 ` Adam Porter [this message]
2017-08-18 6:12 ` Eli Zaretskii
2017-08-18 19:51 ` Adam Porter
2017-08-19 6:55 ` Eli Zaretskii
2017-08-20 1:21 ` Adam Porter
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=CAO_b3FVS3vP8mV-2kBU+0pgR7zzY-gu81iWHUVUNGhApBK0mFg@mail.gmail.com \
--to=adam@alphapapa.net \
--cc=28108@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.