From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>, emacs-devel@gnu.org
Subject: Re: Willing to debug bug #3542 (23.0.94; File access via UNC path slow again under Windows)
Date: Tue, 14 Jul 2009 09:31:42 +0900 [thread overview]
Message-ID: <wl3a90umtt.wl%mituharu@math.s.chiba-u.ac.jp> (raw)
In-Reply-To: <83tz1gqr33.fsf@gnu.org>
>>>>> On Mon, 13 Jul 2009 23:13:20 +0300, Eli Zaretskii <eliz@gnu.org> said:
> Aha. But it sounds like it's not just me who is confused. Here's
> just two examples:
> From fileio.c:
> nm = (unsigned char *) alloca (SBYTES (filename) + 1);
> bcopy (SDATA (filename), nm, SBYTES (filename) + 1);
> (why +1? it potentially accesses memory beyond end of `filename's
> contents)
It is necessary because SBYTES does not count the extra NUL character.
E.g., SBYTES (empty_unibyte_string) == 0, and
*(SDATA (empty_unibyte_string)) == '\0'.
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
next prev parent reply other threads:[~2009-07-14 0:31 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-05 21:01 Willing to debug bug #3542 (23.0.94; File access via UNC path slow again under Windows) Mathias Dahl
2009-07-05 22:58 ` Chong Yidong
2009-07-06 14:30 ` Mathias Dahl
2009-07-06 14:55 ` Chong Yidong
2009-07-07 11:00 ` Mathias Dahl
2009-07-07 11:14 ` Miles Bader
2009-07-06 3:06 ` Eli Zaretskii
2009-07-06 7:38 ` Mathias Dahl
2009-07-06 20:01 ` Eli Zaretskii
2009-07-08 15:01 ` Eli Zaretskii
2009-07-08 20:47 ` Mathias Dahl
2009-07-09 11:37 ` Jason Rumney
2009-07-09 11:53 ` Mathias Dahl
2009-07-09 16:11 ` Drew Adams
2009-07-09 16:25 ` Jason Rumney
2009-07-09 17:03 ` Drew Adams
2009-07-09 18:59 ` Eli Zaretskii
2009-07-09 18:47 ` Eli Zaretskii
2009-07-09 21:33 ` Chong Yidong
2009-07-10 8:54 ` Eli Zaretskii
2009-07-11 19:17 ` Stefan Monnier
2009-07-11 20:22 ` Eli Zaretskii
2009-07-13 12:17 ` Stefan Monnier
2009-07-13 13:38 ` Andreas Schwab
2009-07-13 19:00 ` Eli Zaretskii
2009-07-13 18:56 ` Eli Zaretskii
2009-07-14 0:51 ` Stefan Monnier
2009-07-13 13:57 ` Andreas Schwab
2009-07-13 19:02 ` Eli Zaretskii
2009-07-13 19:39 ` Andreas Schwab
2009-07-13 20:13 ` Eli Zaretskii
2009-07-13 21:04 ` Andreas Schwab
2009-07-13 23:29 ` Chong Yidong
2009-07-14 0:31 ` YAMAMOTO Mitsuharu [this message]
2009-07-14 0:54 ` Stefan Monnier
2009-07-14 3:18 ` Eli Zaretskii
2009-07-14 4:28 ` Miles Bader
2009-07-14 19:14 ` Eli Zaretskii
2009-07-14 19:32 ` Davis Herring
2009-07-14 20:03 ` Eli Zaretskii
2009-07-14 20:27 ` Miles Bader
2009-07-14 21:05 ` Eli Zaretskii
2009-07-15 9:19 ` David Kastrup
2009-07-14 4:31 ` Haojun Bao
2009-07-14 18:18 ` Stefan Monnier
2009-07-14 19:57 ` Eli Zaretskii
2009-07-09 19:11 ` Eli Zaretskii
2009-07-09 19:13 ` Eli Zaretskii
2009-07-09 12:56 ` Eli Zaretskii
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