From: Richard Henderson <rth@redhat.com>
To: Momchil Velikov <velco@fadata.bg>
Cc: Alan Modra <amodra@bigpond.net.au>, gcc@gcc.gnu.org
Subject: Re: Undefined behavior in 950605-1.c
Date: Thu, 25 Jul 2002 13:25:00 -0000 [thread overview]
Message-ID: <20020725105612.A27073@redhat.com> (raw)
In-Reply-To: <873cu83skp.fsf@fadata.bg>; from velco@fadata.bg on Thu, Jul 25, 2002 at 03:22:46PM +0300
On Thu, Jul 25, 2002 at 03:22:46PM +0300, Momchil Velikov wrote:
> Alan> Ah, but what is the promoted type of "unsigned char"? int!
Except if sizeof(char) == sizeof(int).
> Isn't that the case with architectures
> with a definition of PROMOTE_MODE, which does not change UNSIGNEDP or
> sets it to 1, e.g, ARM, PPC, V850 ?
PROMOTE_MODE has nothing to do with C types. It's for efficiency
in the generated rtl *only*. If a strictly conforming program can
notice the existance of PROMOTE_MODE, there is a bug.
r~
next prev parent reply other threads:[~2002-07-25 17:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-25 7:08 Momchil Velikov
2002-07-25 8:54 ` Andreas Schwab
2002-07-25 9:04 ` Momchil Velikov
[not found] ` <20020725102412.GV26054@bubble.sa.bigpond.net.au>
2002-07-25 10:56 ` Momchil Velikov
2002-07-25 11:24 ` Andreas Schwab
2002-07-25 13:25 ` Richard Henderson [this message]
2002-07-26 14:47 ` Richard Earnshaw
2002-07-28 0:08 ` Richard Henderson
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