From: Eli Zaretskii <eliz@gnu.org>
To: Steve Kemp <steve@steve.org.uk>
Cc: 27585@debbugs.gnu.org
Subject: bug#27585: segfault when evaluating a file containing only backticks
Date: Wed, 05 Jul 2017 21:41:45 +0300 [thread overview]
Message-ID: <83van6n2ty.fsf@gnu.org> (raw)
In-Reply-To: <1499235670.28433.1@ssh.steve.org.uk> (message from Steve Kemp on Wed, 05 Jul 2017 06:21:10 +0000)
> From: Steve Kemp <steve@steve.org.uk>
> Date: Wed, 05 Jul 2017 06:21:10 +0000
>
>
> I've recently started fuzzing GNU Emacs, using the current git sources.
> During the course of that work I stumbled upon this easily reproduced bug:
>
> deagol ~ $ perl -e 'print "`" x ( 1024 * 1024 * 12);' > t.el
> deagol ~ $ /usr/bin/emacs --batch --script ./t.el
> ..
> Segmentation fault (core dumped)
Here it says:
Re-entering top level after C stack overflow
and doesn't crash.
> > Most likely just a stack overflow.
>
> Agreed, but still I think a segfault is unexpected and could be
> prevented.
See above: the machinery to try and prevent it exists, but it doesn't
always succeed. And it really can't be 100% reliable. So I'm unsure
what did you expect, and why. Emacs generally gives you enough rope
to hang yourself; it's up to you not to be tempted to do so...
IOW: why would someone want to run such a silly "program"?
next prev parent reply other threads:[~2017-07-05 18:41 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-05 6:21 bug#27585: segfault when evaluating a file containing only backticks Steve Kemp
2017-07-05 7:51 ` Andreas Schwab
2017-07-05 8:26 ` Steve Kemp
2017-07-05 18:41 ` Eli Zaretskii [this message]
2017-07-05 18:55 ` Steve Kemp
2017-07-05 19:47 ` Eli Zaretskii
2017-07-06 3:46 ` Steve Kemp
2017-07-06 15:16 ` Eli Zaretskii
2017-07-06 15:33 ` Steve Kemp
2017-07-06 16:24 ` Eli Zaretskii
2017-07-06 6:46 ` Andreas Schwab
2017-07-06 15:19 ` Eli Zaretskii
2017-07-06 15:31 ` Andreas Schwab
2017-07-06 15:37 ` Eli Zaretskii
2017-07-06 15:41 ` Andreas Schwab
2017-07-06 15:52 ` Daniel Colascione
2017-07-06 16:19 ` Eli Zaretskii
2017-07-06 16:37 ` Daniel Colascione
2017-07-06 17:27 ` Eli Zaretskii
2017-07-06 15:48 ` Daniel Colascione
2017-07-14 12:09 ` Paul Eggert
2017-07-14 13:30 ` Eli Zaretskii
2017-07-15 5:03 ` Steve Kemp
2017-07-15 5:12 ` Paul Eggert
2017-07-15 7:15 ` Eli Zaretskii
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=83van6n2ty.fsf@gnu.org \
--to=eliz@gnu.org \
--cc=27585@debbugs.gnu.org \
--cc=steve@steve.org.uk \
/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.