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From: Gaute B Strokkenes <biggaute@uwc.net>
Cc: emacs-devel@gnu.org, Stefan Monnier <monnier@iro.umontreal.ca>,
	Miles Bader <miles@gnu.org>
Subject: Re: Alignment of Lisp_Subr
Date: Fri, 14 Nov 2003 06:23:53 +0100	[thread overview]
Message-ID: <87u1577cba.fsf@srcf.ucam.org> (raw)
In-Reply-To: <87llqkgs32.fsf@tleepslib.sk.tsukuba.ac.jp> (Stephen J. Turnbull's message of "Fri, 14 Nov 2003 01:18:25 +0900")

On 13 nov 2003, stephen@xemacs.org wrote:

> There may be issues with Lisp objects with tagbits at the bottom.  I
> know XEmacs had some problems on recent glibc, which were never
> properly diagnosed.  It's probable that this was due to excessive
> cleverness in optimizing space use of malloc blocks, but if you do
> run into weirdness (we were crashing) feel free to ping me and I'll
> dig up the thread.

Are you saying that glibc malloc does not return blocks that are
sufficiently aligned?  My copy of the glibc manual says:

  The block that `malloc' gives you is guaranteed to be aligned so
  that it can hold any type of data.  In the GNU system, the address
  is always a multiple of eight on most systems, and a multiple of 16
  on 64-bit systems.

-- 
Gaute Strokkenes                        http://www.srcf.ucam.org/~gs234/
Not enough people play SKEE-BALL..  They're always thinking about
 COCAINE or and ALIEN BEINGS!!

  reply	other threads:[~2003-11-14  5:23 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-11-12 16:22 Alignment of Lisp_Subr Stefan Monnier
2003-11-12 23:30 ` Miles Bader
2003-11-13 16:18   ` Stephen J. Turnbull
2003-11-14  5:23     ` Gaute B Strokkenes [this message]
2003-11-14 11:28       ` Stephen J. Turnbull
2003-11-16 10:25         ` Gaute B Strokkenes
2003-11-13  2:40 ` Richard Stallman

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