From: Jonathan Wakely <jwakely.gcc@gmail.com>
To: gcc-help@gcc.gnu.org
Cc: Axel Freyn <axel-freyn@gmx.de>
Subject: Re: infinite for-loop and related question
Date: Thu, 17 Feb 2011 14:08:00 -0000 [thread overview]
Message-ID: <AANLkTin=GUXjqyTB67WU0BuambPRXnnSuqv0eQqGLCr7@mail.gmail.com> (raw)
In-Reply-To: <20110217130938.GT5274@axel>
On 17 February 2011 13:09, Axel Freyn wrote:
>>
>> I'm guessing you didn't bother to actually compile that and test it?
> Well, I did. But using gcc instead of g++. I get values <128 as soon as
> I add the integer conversion (in C code).
Jason's original code used char i(1) which is not valid C ;-)
In any case, I get the same behaviour in C as C++, the cast to int
makes no difference.
Did you use optimization?
>> See 5.2.2 [expr.call] paragraph 7 in the C++ standard. Arguments to
>> varargs functions are subject to integral promotions.
> In C++ it does not make any difference.
C has the same rules for default argument promotions, see 6.5.2.2 paragraph 6
next prev parent reply other threads:[~2011-02-17 14:05 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-16 20:17 Jason Mancini
2011-02-16 20:41 ` Jonathan Wakely
2011-02-16 21:37 ` Jason Mancini
2011-02-16 21:49 ` Bob Plantz
2011-02-16 23:00 ` Jonathan Wakely
2011-02-16 23:22 ` Thomas Martitz
2011-02-17 6:31 ` Jonathan Wakely
2011-02-17 10:36 ` Axel Freyn
2011-02-17 12:23 ` Jonathan Wakely
2011-02-17 13:16 ` Axel Freyn
2011-02-17 14:08 ` Jonathan Wakely [this message]
2011-02-16 23:00 Bill McEnaney
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