From: Paul Eggert <eggert@cs.ucla.edu>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 8545@debbugs.gnu.org, Emacs Development <emacs-devel@gnu.org>
Subject: Re: issues with recent doprnt-related changes
Date: Wed, 04 May 2011 07:56:43 -0700 [thread overview]
Message-ID: <4DC1692B.1090101@cs.ucla.edu> (raw)
In-Reply-To: <E1QHYkc-0008Ip-Tq@fencepost.gnu.org>
On 05/04/11 02:52, Eli Zaretskii wrote:
>> It seems from that discussion that strings can contain MOST_POSITIVE_FIXNUM bytes.
> I think the conclusion was that it can contain MOST_POSITIVE_FIXNUM
> _including_the_terminating_null_.
Hmm, that's not how I read
<http://lists.gnu.org/archive/html/emacs-devel/2011-04/msg00923.html>.
I understood the argument to be that a buffer must contain at most
MOST_POSITIVE_FIXNUM - 1 bytes due to other reasons, but it's OK
to have "a string whose length is MOST_POSITIVE_FIXNUM", i.e.,
(= (length STRING) most-positive-fixnum), because we already check
buffer sizes before inserting strings. If you
count the trailing byte, the length of the underlying C character
array would be MOST_POSITIVE_FIXNUM + 1.
I'll CC: this to emacs-devel just in case I misinterpreted that.
next parent reply other threads:[~2011-05-04 14:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4DB50AB9.6060100@cs.ucla.edu>
[not found] ` <83tydmaeo3.fsf@gnu.org>
[not found] ` <4DB65FF1.5010003@cs.ucla.edu>
[not found] ` <83aafb8p4a.fsf@gnu.org>
[not found] ` <4DB8ABEA.3080503@cs.ucla.edu>
[not found] ` <E1QFK7p-0000de-I3@fencepost.gnu.org>
[not found] ` <4DB9146D.2040702@cs.ucla.edu>
[not found] ` <E1QFQVO-0004Dq-6o@fencepost.gnu.org>
[not found] ` <4DB9E5FF.9020506@cs.ucla.edu>
[not found] ` <83d3k571ee.fsf@gnu.org>
[not found] ` <4DC10012.8020809@cs.ucla.edu>
[not found] ` <E1QHYkc-0008Ip-Tq@fencepost.gnu.org>
2011-05-04 14:56 ` Paul Eggert [this message]
2011-05-05 20:36 ` issues with recent doprnt-related changes Eli Zaretskii
2011-05-06 13:33 ` Stefan Monnier
2011-05-06 14:41 ` Paul Eggert
2011-05-06 15:03 ` Eli Zaretskii
2011-05-06 17:13 ` Stefan Monnier
2011-05-06 19:57 ` Eli Zaretskii
2011-05-07 3:18 ` Stefan Monnier
2011-05-07 7:55 ` Eli Zaretskii
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