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From: Richard Stallman <rms@gnu.org>
To: David Kastrup <dak@gnu.org>
Cc: dmantipov@yandex.ru, emacs-devel@gnu.org
Subject: Re: GC: marking traversal and pure symbols
Date: Sat, 07 Jul 2007 09:06:16 -0400	[thread overview]
Message-ID: <E1I79zM-0007N2-Fg@fencepost.gnu.org> (raw)
In-Reply-To: <86wsxej8vu.fsf@lola.quinscape.zz> (message from David Kastrup on Fri, 06 Jul 2007 09:20:37 +0200)

    Would it not make sense to restrict the purity notion to the value
    cell of a symbol?

On some platforms, pure storage is (or at least was) stored in
read-only memory.  If nil is in read-only memory, we cannot make
its plist cell writable.

  parent reply	other threads:[~2007-07-07 13:06 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-05 13:10 GC: marking traversal and pure symbols Dmitry Antipov
2007-07-06  4:38 ` Richard Stallman
2007-07-06  7:20   ` David Kastrup
2007-07-06  9:29     ` Andreas Schwab
2007-07-07 13:06     ` Richard Stallman [this message]
2007-07-06 12:02   ` Ken Raeburn
2007-07-06 12:33     ` Andreas Schwab

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