public inbox for libc-alpha@sourceware.org
 help / color / mirror / Atom feed
From: Paul Eggert <eggert@cs.ucla.edu>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: libc-alpha@sourceware.org
Subject: Re: [PATCH] regex: fix buffer read overrun in search [BZ#28470]
Date: Wed, 24 Nov 2021 15:50:21 -0800	[thread overview]
Message-ID: <bc15d00e-96c7-ad68-cd49-5aa48717b9ec@cs.ucla.edu> (raw)
In-Reply-To: <87mtltgolf.fsf@igel.home>

On 11/24/21 14:45, Andreas Schwab wrote:
> Is it?  Why?

Partly because it refuses to read past the bounds of an array, where the 
old code would. And partly because it's been run through several tests 
- not just glibc tests, but also grep and coreutils and probably some 
others by now.

Of course this is not a 100% guarantee of safety, but it's close enough.

  reply	other threads:[~2021-11-24 23:50 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-18 22:15 Paul Eggert
2021-10-19  7:17 ` Andreas Schwab
2021-10-19  8:13   ` Paul Eggert
2021-10-19  8:25     ` Andreas Schwab
2021-10-19  8:57       ` Paul Eggert
2021-10-19 15:09         ` Andreas Schwab
2021-10-19 18:14           ` Paul Eggert
2021-11-24 22:27             ` Paul Eggert
2021-11-24 22:45               ` Andreas Schwab
2021-11-24 23:50                 ` Paul Eggert [this message]
2021-11-25  9:01                   ` Andreas Schwab
2021-11-26 18:35                     ` Paul Eggert
2021-11-26 18:39                       ` Andreas Schwab

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=bc15d00e-96c7-ad68-cd49-5aa48717b9ec@cs.ucla.edu \
    --to=eggert@cs.ucla.edu \
    --cc=libc-alpha@sourceware.org \
    --cc=schwab@linux-m68k.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.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).