From: Wolfgang Denk <wd@denx.de>
To: "DI BACCO ANTONIO - technolabs" <Antonio.DiBacco@technolabs.it>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: ppc_8xx-gcc from eldk strange behaviour
Date: Thu, 30 Aug 2007 01:28:00 +0200 [thread overview]
Message-ID: <20070829232800.EBD0524044@gemini.denx.de> (raw)
In-Reply-To: Your message of "Wed, 29 Aug 2007 11:28:36 +0200." <F1F6EC0C8B75034F9E3A79FC85122E8EA185B5@aquib01a>
In message <F1F6EC0C8B75034F9E3A79FC85122E8EA185B5@aquib01a> you wrote:
> > C does not specify the signedness of char. If you care, you need to
> > explicitly specify.
>
> Sorry, I didn't know this. Anyway I would expect the same behaviour from
> both host gcc and ppc_8xx-gcc. In this case host gcc is wrong.
No, it is not wrong. The behaviour is just not defined by the
standard, so the compiler is free to do what he likes. Some systems
default to singend chars, others to unsigned. Both is perfectly
legal.
It is code that makes any such assumptions which is broken.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
Death, when unnecessary, is a tragic thing.
-- Flint, "Requiem for Methuselah", stardate 5843.7
next prev parent reply other threads:[~2007-08-29 23:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-28 18:56 ppc_8xx-gcc from eldk strange behaviour DI BACCO ANTONIO - technolabs
2007-08-28 19:01 ` Scott Wood
2007-08-29 9:28 ` DI BACCO ANTONIO - technolabs
2007-08-29 23:28 ` Wolfgang Denk [this message]
2007-08-29 4:50 ` Ricardo Scop
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