From: Julia Lawall <julia@diku.dk>
To: Bernd Petrovitsch <bernd@petrovitsch.priv.at>
Cc: Dan Carpenter <error27@gmail.com>,
kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: bug list: assigning negative values to unsigned variables
Date: Wed, 27 Jan 2010 13:30:20 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.64.1001271329460.20256@ask.diku.dk> (raw)
In-Reply-To: <1264590586.9749.2.camel@localhost>
On Wed, 27 Jan 2010, Bernd Petrovitsch wrote:
> On Mit, 2010-01-27 at 11:57 +0100, Julia Lawall wrote:
> > On Wed, 27 Jan 2010, Dan Carpenter wrote:
> >
> > > Fixing the places which assign negative values to unsigned variables is a good janitor task.
> >
> > I had the impression that assignment to -1 was done sometimes as a
> > portable way to initialize the variable to 0xffff (for any number of f's).
> > So perhaps it is not so trivial to fix.
> Any particular reason that ~0U, ~0UL, and ~0ULL shouldn't do the same
> (without relying on conversion from signed to unsigned)?
Then the constant specifies the type?
julia
next prev parent reply other threads:[~2010-01-27 12:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-27 10:40 Dan Carpenter
2010-01-27 10:57 ` Julia Lawall
2010-01-27 11:09 ` Bernd Petrovitsch
2010-01-27 12:30 ` Julia Lawall [this message]
2010-01-27 14:12 ` Bernd Petrovitsch
2010-01-27 14:44 ` Al Viro
2010-01-27 11:13 ` Dan Carpenter
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