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Date:      Wed, 27 May 2009 22:08:05 +0200
From:      Roland Smith <rsmith@xs4all.nl>
To:        FreeBSD-Questions@freebsd.org
Subject:   Re: FreeBSD & Software RAID
Message-ID:  <20090527200805.GA20419@slackbox.xs4all.nl>
In-Reply-To: <alpine.BSF.2.00.0905272123120.54285@wojtek.tensor.gdynia.pl>
References:  <4A1AA3DC.5020300@network-i.net> <200905271048.27837.kirk@strauser.com> <alpine.BSF.2.00.0905271832320.53013@wojtek.tensor.gdynia.pl> <200905271152.34237.kirk@strauser.com> <20090527190230.GB9937@Grumpy.DynDNS.org> <alpine.BSF.2.00.0905272123120.54285@wojtek.tensor.gdynia.pl>

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On Wed, May 27, 2009 at 09:24:17PM +0200, Wojciech Puchar wrote:
> > I haven't looked at the ZFS code but this sort of thing is exactly why
> > all code I write uses int8_t, int16_t, int32_t, uint8_t, ... even when
> > the first thing I have to do with a new compiler is to work out the
> > proper typedefs to create them.
>=20
> int, short and char are portable,=20

Not completely, at least as far as C is concerned. I'd say that char and
long are portable, but not short and int.

According to K&R (and I don't think this has changed in later
standards), a char is defined as one byte. Short, int and long can vary
but short and int must be at least 16 bits, and a long must be at least
32 bits. Additionally a short may not be longer than an int which may
not be longer than a long. But the size of an int depends on hardware
platform and compiler data model.

Roland
--=20
R.F.Smith                                   http://www.xs4all.nl/~rsmith/
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