From: Sergei Organov <osv@javad.com>
To: 7eggert@gmx.de
Cc: "Linus Torvalds" <torvalds@linux-foundation.org>,
"J.A. MagallÃÃón" <jamagallon@ono.com>,
"Jan Engelhardt" <jengelh@linux01.gwdg.de>,
"Jeff Garzik" <jeff@garzik.org>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"Andrew Morton" <akpm@linux-foundation.org>
Subject: Re: somebody dropped a (warning) bomb
Date: Fri, 16 Feb 2007 14:21:27 +0300 [thread overview]
Message-ID: <874ppmjqko.fsf@javad.com> (raw)
In-Reply-To: <E1HHmuB-0001lW-E1@be1.lrz> (Bodo Eggert's message of "Thu, 15 Feb 2007 21:08:35 +0100")
Bodo Eggert <7eggert@gmx.de> writes:
> Sergei Organov <osv@javad.com> wrote:
>> Linus Torvalds <torvalds@linux-foundation.org> writes:
[...]
> Using signed chars for strings is wrong in most countries on earth. It was
> wrong when the first IBM PC came out in 1981, and creating a compiler in
> 1987 defaulting to signed char is a sure sign of originating from an
> isolated country and knowing nothing about this planet.
Maybe I'm wrong, but wasn't it the case that C had no "signed char" type
that time, so "char" had to be abused for the "tiny signed integer"?
> Using signed chars in comparisons is especially wrong, and casting
> each char to unsigned before comparing them is likely to be
> forgotten.
If we start talking about the C language, my opinion is that it's C
problem that it allows numeric comparison of "char" variables at
all. If one actually needs to compare alphabetic characters numerically,
he should first cast to required integer type.
> Unsigned character strings are useless because there is no such thing
> as char(-23), and if these strings weren't casted to signed inside all
> IO functions, they wouldn't work correctly.
Didn't you swap "signed" and "unsigned" by mistake in this phrase? Or
are you indeed think that using "unsigned char*" for strings is useless?
> Only because many programmers don't compare chars, most programs will
> work outside the USA.
Comparison of characters being numeric is not a very good property of
the C language.
> I repeat: Thanks to using signed chars, the programs only
> work /by/ /accident/! Promoting the use of signed char strings is promoting
> bugs and endangering the stability of all our systems. You should stop this
> bullshit now, instead of increasing the pile.
Where did you see I promoted using of "singed char strings"?! If you
don't like the fact that in C language characters are "char", strings
are "char*", and the sign of char is implementation-defined, please
argue with the C committee, not with me.
Or use -funsigned-char to get dialect of C that fits your requirements
better.
-- Sergei.
next prev parent reply other threads:[~2007-02-16 11:21 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <7Mj5f-3oz-21@gated-at.bofh.it>
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[not found] ` <7MGkB-62k-31@gated-at.bofh.it>
[not found] ` <7NHoe-2Mb-37@gated-at.bofh.it>
[not found] ` <7NMe9-1ZN-7@gated-at.bofh.it>
[not found] ` <7Oagl-6bO-1@gated-at.bofh.it>
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[not found] ` <7Oc8t-NS-1@gated-at.bofh.it>
2007-02-15 20:08 ` somebody dropped a (warning) bomb Bodo Eggert
2007-02-16 11:21 ` Sergei Organov [this message]
2007-02-16 14:51 ` Bodo Eggert
2007-02-19 11:56 ` Sergei Organov
2007-02-16 12:46 ` Sergei Organov
2007-02-16 17:40 ` Bodo Eggert
2007-02-19 12:17 ` Sergei Organov
2007-02-08 15:00 Jeff Garzik
2007-02-08 16:33 ` Linus Torvalds
2007-02-08 18:42 ` Jan Engelhardt
2007-02-08 19:53 ` Linus Torvalds
2007-02-08 21:10 ` Jan Engelhardt
2007-02-08 21:37 ` Linus Torvalds
2007-02-08 23:12 ` David Rientjes
2007-02-08 23:37 ` Linus Torvalds
2007-02-09 0:24 ` David Rientjes
2007-02-09 0:42 ` Linus Torvalds
2007-02-09 0:59 ` Linus Torvalds
2007-02-09 0:59 ` David Rientjes
2007-02-09 1:11 ` Linus Torvalds
2007-02-09 1:18 ` David Rientjes
2007-02-09 15:38 ` Linus Torvalds
2007-02-09 3:27 ` D. Hazelton
2007-02-09 19:54 ` Pete Zaitcev
2007-02-09 12:34 ` Jan Engelhardt
2007-02-09 13:16 ` linux-os (Dick Johnson)
2007-02-09 17:45 ` Jan Engelhardt
2007-02-09 20:29 ` linux-os (Dick Johnson)
2007-02-09 22:05 ` Jan Engelhardt
2007-02-09 22:58 ` Martin Mares
2007-02-12 18:50 ` linux-os (Dick Johnson)
2007-02-13 15:14 ` Dick Streefland
2007-02-08 21:13 ` J.A. Magallón
2007-02-08 21:42 ` Linus Torvalds
2007-02-08 22:03 ` Linus Torvalds
2007-02-08 22:19 ` Willy Tarreau
2007-02-09 0:03 ` J.A. Magallón
2007-02-09 0:22 ` Linus Torvalds
2007-02-09 12:38 ` Sergei Organov
2007-02-09 15:58 ` Linus Torvalds
2007-02-12 11:12 ` Sergei Organov
2007-02-12 16:26 ` Linus Torvalds
2007-02-13 18:06 ` Sergei Organov
2007-02-13 18:26 ` Pekka Enberg
2007-02-13 19:14 ` Sergei Organov
2007-02-13 19:43 ` Pekka Enberg
2007-02-13 20:29 ` Sergei Organov
2007-02-13 21:31 ` Jeff Garzik
2007-02-13 23:21 ` Linus Torvalds
2007-02-15 13:20 ` Sergei Organov
2007-02-15 15:57 ` Linus Torvalds
2007-02-15 18:53 ` Sergei Organov
2007-02-15 19:02 ` Linus Torvalds
2007-02-16 4:26 ` Rene Herman
2007-02-19 11:58 ` Sergei Organov
2007-02-19 13:58 ` Sergei Organov
2007-02-15 22:32 ` Lennart Sorensen
2007-02-13 19:25 ` Linus Torvalds
2007-02-13 19:59 ` Sergei Organov
2007-02-13 20:24 ` Linus Torvalds
2007-02-15 15:15 ` Sergei Organov
2007-02-13 21:13 ` Rob Landley
2007-02-13 22:21 ` Olivier Galibert
2007-02-14 12:52 ` Sergei Organov
2007-02-15 20:06 ` Sergei Organov
2007-02-09 15:10 ` Sergei Organov
2007-02-08 16:35 ` Kumar Gala
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