From: Andreas Jaeger <aj@suse.de>
To: Marc.Espie@liafa.jussieu.fr
Cc: Marc Espie <espie@quatramaran.ens.fr>, gcc@gcc.gnu.org
Subject: Re: size_t printf warnings and preprocessor
Date: Thu, 12 Jul 2001 08:54:00 -0000 [thread overview]
Message-ID: <hou20ijg84.fsf@gee.suse.de> (raw)
In-Reply-To: <20010712175140.A3097@schutzenberger.liafa.jussieu.fr>
Marc Espie <espie@schutzenberger.liafa.jussieu.fr> writes:
> On Thu, Jul 12, 2001 at 05:48:52PM +0200, Andreas Jaeger wrote:
>> Marc Espie <espie@quatramaran.ens.fr> writes:
>>
>> > I would love to get size_t warnings for printf out of gcc.
>> > I've already noticed that 3.0 is much better at following typeinfo than
>> > 2.95 used to.
>> >
>> > I would like to have a switch such that
>> > size_t var;
>> > printf(format, var);
>> >
>> > invariably ends in an error, as there can't be a single format that works
>> > with size_t.
>>
>> "%z" is specified by ISO C 99 for size_t. So what's wrong with printf
>> ("%z\n", var) ?
>>
>> Sorry, I'm lost with your proposal.
>
> Nothing is wrong, I don't have the C99 proposal with me... :)
>
> Okay, what I'm proposing still makes sense in the legacy case, for people
> who have written code before %z and who would like it checked.
>
> Also, in pedantic C99 mode, do we warn when size_t is used without %z ?
Now I get it - you do it the other way round. You want to allow
size_t only with %z and forbid e.g. "%ld", var or even "%ld",(long)var.
Andreas
--
Andreas Jaeger
SuSE Labs aj@suse.de
private aj@arthur.inka.de
http://www.suse.de/~aj
next prev parent reply other threads:[~2001-07-12 8:54 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-05 7:39 [GCC 3.0] Bad regression, binary size Marc Espie
2001-07-05 7:51 ` Marc Espie
2001-07-05 8:07 ` Joern Rennecke
2001-07-05 8:12 ` Marc Espie
2001-07-05 8:17 ` David Edelsohn
2001-07-05 8:22 ` Marc Espie
2001-07-05 15:14 ` Geoff Keating
2001-07-07 13:09 ` Richard Henderson
2001-07-07 14:41 ` Jamie Lokier
2001-07-07 16:45 ` Richard Henderson
2001-07-08 14:28 ` Linus Torvalds
2001-07-08 23:59 ` Marc Espie
2001-07-09 6:06 ` Tim Prince
2001-07-09 9:10 ` Linus Torvalds
2001-07-09 9:28 ` Marc Espie
2001-07-09 9:58 ` Linus Torvalds
2001-07-09 10:10 ` Paolo Carlini
2001-07-09 14:49 ` Richard Henderson
2001-07-09 15:23 ` Linus Torvalds
2001-07-09 15:55 ` Joern Rennecke
2001-07-09 16:14 ` Linus Torvalds
2001-07-09 16:05 ` Richard Henderson
2001-07-09 16:24 ` Linus Torvalds
2001-07-12 8:41 ` size_t printf warnings and preprocessor Marc Espie
2001-07-12 8:49 ` Andreas Jaeger
2001-07-12 8:52 ` Marc Espie
2001-07-12 8:54 ` Andreas Jaeger [this message]
2001-07-12 9:10 ` Joseph S. Myers
-- strict thread matches above, loose matches on Subject: below --
1999-09-13 21:45 type based aliasing again N8TM
1999-09-14 4:01 ` Marc Espie
1999-09-14 9:56 ` David Edelsohn
1999-09-14 10:10 ` Richard Earnshaw
1999-09-14 10:31 ` Nick Ing-Simmons
1999-09-14 10:52 ` David Edelsohn
1999-09-14 11:11 ` craig
1999-09-14 14:44 ` David Edelsohn
1999-09-30 18:02 ` David Edelsohn
1999-09-14 15:06 ` David Edelsohn
1999-09-14 17:35 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-14 23:41 ` craig
1999-09-15 8:28 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-15 9:19 ` David Edelsohn
1999-09-15 9:59 ` Nick Ing-Simmons
1999-09-15 15:33 ` David Edelsohn
1999-09-30 18:02 ` David Edelsohn
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-15 10:01 ` craig
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` David Edelsohn
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` David Edelsohn
1999-09-30 18:02 ` craig
1999-09-14 11:58 ` Gerald Pfeifer
1999-09-30 18:02 ` Gerald Pfeifer
1999-09-30 18:02 ` David Edelsohn
1999-09-14 11:01 ` craig
1999-09-14 11:14 ` craig
1999-09-30 18:02 ` craig
1999-09-14 11:39 ` Mark Mitchell
1999-09-14 14:48 ` Toon Moene
1999-09-14 15:00 ` David Edelsohn
1999-09-14 16:01 ` Toon Moene
1999-09-14 16:15 ` David Edelsohn
1999-09-14 16:43 ` Mark Mitchell
1999-09-30 18:02 ` Mark Mitchell
1999-09-14 17:39 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-30 18:02 ` David Edelsohn
1999-09-14 16:19 ` dvv
1999-09-14 17:38 ` Michael Meissner
1999-09-30 18:02 ` Michael Meissner
1999-09-30 18:02 ` Dima Volodin
1999-09-30 18:02 ` Toon Moene
1999-09-30 18:02 ` David Edelsohn
1999-09-14 15:08 ` Mark Mitchell
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Toon Moene
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` craig
1999-09-14 23:46 ` Geoff Keating
1999-09-15 7:47 ` Nick Ing-Simmons
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-30 18:02 ` Geoff Keating
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-30 18:02 ` Richard Earnshaw
1999-09-14 17:22 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-30 18:02 ` David Edelsohn
1999-09-14 17:23 ` Marc Lehmann
1999-09-15 1:59 ` Marc Espie
1999-09-15 8:28 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-30 18:02 ` Marc Espie
1999-09-30 18:02 ` Marc Lehmann
1999-09-15 2:01 ` Jeffrey A Law
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Marc Espie
1999-09-30 18:02 ` N8TM
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