From: Paul Eggert <eggert@cs.ucla.edu>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: 8344@debbugs.gnu.org
Subject: bug#8344: (substring ...) crashes on large vectors
Date: Fri, 25 Mar 2011 14:48:38 -0700 [thread overview]
Message-ID: <4D8D0DB6.4040206@cs.ucla.edu> (raw)
In-Reply-To: <jwvoc4yrj2w.fsf-monnier+emacs@gnu.org>
On 03/25/2011 02:24 PM, Stefan Monnier wrote:
> I'd urge you to focus on "handling an 8GB file"
> (on 32bit systems this won't work, but on 64bit it should but didn't
> last time I tried)
Yes, thanks, that is on my list of things to do. This
nargs business is one of the (easier) steps needed
to get it done. Another (easier) step will be to
merge the gnulib fixes for regular expressions into
Emacs, since gnulib has fixed several problems with
matching buffers larger than 2**31 bytes.
There are several other steps, of course, and some
will be harder.
To some extent I'm using gcc -Wstrict-overflow
as a first pass, to fix the more-obvious gotchas, in such
a way that regressions can be caught statically. Many
of the other changes won't be so easy, but by then I hope
to understand Emacs internals better. For example,
the Emacs regex code fails the static checks now, and
that is why I want to turn to the regex code at some point in the
near future.
next prev parent reply other threads:[~2011-03-25 21:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-25 18:17 bug#8344: (substring ...) crashes on large vectors Paul Eggert
2011-03-25 21:24 ` Stefan Monnier
2011-03-25 21:48 ` Paul Eggert [this message]
2011-03-27 2:18 ` Paul Eggert
2011-03-27 7:52 ` Andreas Schwab
2011-03-27 9:09 ` Paul Eggert
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