mailing list of musl libc
 help / color / mirror / code / Atom feed
From: Alexander Monakov <amonakov@ispras.ru>
To: musl@lists.openwall.com
Subject: Re: Possible infinite loop in qsort()
Date: Sun, 10 Jan 2016 14:38:05 +0300 (MSK)	[thread overview]
Message-ID: <alpine.LNX.2.20.1601101430330.24458@monopod.intra.ispras.ru> (raw)
In-Reply-To: <20160110040516.GQ238@brightrain.aerifal.cx>

On Sat, 9 Jan 2016, Rich Felker wrote:
> Note also that if you do want to use this code on an implementation
> without such a guarantee, only the case where the member size is 1 can
> possibly have >SIZE_MAX/2 members.

I don't think so: the problematic loop in musl computes Leonardo numbers
premultiplied by member size, to be used as byte offsets in the array to be
sorted.  So individual member size doesn't matter, only the overall array
size.

Alexander


  parent reply	other threads:[~2016-01-10 11:38 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-09  8:21 Markus Wichmann
2016-01-09  9:07 ` Felix Janda
2016-01-10  4:05   ` Rich Felker
2016-01-10 10:33     ` Szabolcs Nagy
2016-01-10 11:38     ` Alexander Monakov [this message]
2016-01-10 11:38     ` Markus Wichmann
2016-01-10 12:15       ` Szabolcs Nagy
2016-01-12 12:25       ` Alexander Cherepanov
2016-01-12 12:48         ` Szabolcs Nagy
2016-01-12 14:31           ` Alexander Cherepanov
2016-01-12 16:22             ` Szabolcs Nagy
2016-01-14 22:21               ` Rich Felker
2016-01-14 22:17         ` Rich Felker
2016-01-10 16:35     ` Morten Welinder
2016-01-10 16:45       ` Jens Gustedt
2016-01-12 10:30 ` Alexander Cherepanov

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=alpine.LNX.2.20.1601101430330.24458@monopod.intra.ispras.ru \
    --to=amonakov@ispras.ru \
    --cc=musl@lists.openwall.com \
    /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 public inbox

	https://git.vuxu.org/mirror/musl/

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 NNTP newsgroup(s).