From: Wayne Davison <wayned@users.sourceforge.net>
To: Peter Stephenson <Peter.Stephenson@csr.com>
Cc: zsh-workers@zsh.org
Subject: Re: Integer overflow during brace expansion
Date: Thu, 1 Mar 2012 08:20:01 -0800 [thread overview]
Message-ID: <CAHSx_Sv5tZDWET8YVqc6DmwAkGhy0EvdnT6AQxhJa_AckZiyvQ@mail.gmail.com> (raw)
In-Reply-To: <20120301143046.49093711@pwslap01u.europe.root.pri>
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On Thu, Mar 1, 2012 at 6:30 AM, Peter Stephenson
<Peter.Stephenson@csr.com>wrote:
> + long long foo = (long long)400;
> + char buf[20];
> + sprintf(buf, "before%lldafter", foo);
> + if (!strcmp(buf, "before400after")) {
>
I think it'd be nice to get some higher bits involved in that check.
Perhaps something like this:
long long foo = ((long long)0xdead << 40) | 0xf00d;
compares to before62677660341432333after (and needs a larger buf).
..wayne..
prev parent reply other threads:[~2012-03-01 16:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-27 16:22 Leon Weber
2012-02-27 16:52 ` Mikael Magnusson
2012-02-27 16:54 ` Mikael Magnusson
2012-02-27 17:01 ` Mikael Magnusson
2012-02-27 17:35 ` Peter Stephenson
2012-03-01 14:30 ` Peter Stephenson
2012-03-01 16:20 ` Wayne Davison [this message]
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