From: dewar@gnat.com
To: Dautrevaux@microprocess.com, paulus@samba.org
Cc: Franz.Sirl-kernel@lauterbach.com, benh@kernel.crashing.org,
gcc@gcc.gnu.org, jtv@xs4all.nl, linux-kernel@vger.kernel.org,
linuxppc-dev@lists.linuxppc.org, minyard@acm.org, rth@redhat.com,
trini@kernel.crashing.org, velco@fadata.bg
Subject: RE: [PATCH] C undefined behavior fix
Date: Thu, 3 Jan 2002 08:28:37 -0500 (EST) [thread overview]
Message-ID: <20020103132837.71EFBF3257@nile.gnat.com> (raw)
<<No, in fact the kernel isn't written in ANSI C. :)
If nothing else, the fact that it uses a lot of gcc-specific
extensions rules that out. And it assumes that you can freely cast
pointers to unsigned longs and back again. I'm sure others can add to
this list.
>>
Most certainly this list should exist in precise defined form. It is not
unreasonable to have a specific list of features that
a) significant programs rely on, and are allowed to rely on
b) gcc promises to implement as specified, regardless of the standard
What is not reasonable is to have various people informally guess at things
that "obviously" can be expected to work in any "reasonable" C implementation.
It is this kind of informality that is asking for trouble.
next reply other threads:[~2002-01-03 13:29 UTC|newest]
Thread overview: 202+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-03 13:28 dewar [this message]
2002-01-04 8:38 ` Florian Weimer
2002-01-04 11:35 ` Joseph S. Myers
2002-01-05 19:25 ` jkl
2002-01-05 19:37 ` Joseph S. Myers
2002-01-05 20:06 ` jkl
2002-01-05 21:42 ` Joseph S. Myers
2002-01-05 20:01 ` Florian Weimer
2002-01-05 20:17 ` jkl
2002-01-05 20:51 ` Florian Weimer
2002-01-06 4:09 ` Paul Mackerras
-- strict thread matches above, loose matches on Subject: below --
2002-01-10 19:01 Bernard Dautrevaux
2002-01-10 12:18 dewar
2002-01-10 12:37 ` Erik Trulsson
2002-01-10 15:27 ` Florian Weimer
2002-01-10 9:03 Bernard Dautrevaux
2002-01-10 10:40 ` David Weinehall
2002-01-10 4:33 dewar
2002-01-10 2:16 dewar
2002-01-10 1:22 dewar
2002-01-10 1:21 dewar
2002-01-10 4:37 ` Tim Hollebeek
2002-01-09 21:54 dewar
2002-01-09 20:32 dewar
2002-01-09 21:43 ` Paul Koning
2002-01-09 20:08 dewar
2002-01-09 19:53 mike stump
2002-01-09 20:12 ` Paul Koning
2002-01-09 10:42 dewar
2002-01-09 10:41 Bernard Dautrevaux
2002-01-09 21:59 ` Gérard Roudier
2002-01-09 10:40 dewar
2002-01-09 9:06 Bernard Dautrevaux
2002-01-09 9:25 ` Bernd Petrovitsch
2002-01-09 2:18 dewar
2002-01-09 2:13 dewar
2002-01-09 1:51 mike stump
2002-01-09 1:19 dewar
2002-01-09 0:51 dewar
2002-01-08 11:12 Bernard Dautrevaux
2002-01-11 9:52 ` Horst von Brand
2002-01-08 9:44 Bernard Dautrevaux
2002-01-08 11:44 ` 'jtv'
2002-01-08 0:16 mike stump
2002-01-08 11:33 ` jtv
2002-01-07 23:46 mike stump
2002-01-07 23:20 dewar
2002-01-07 23:15 dewar
2002-01-07 23:12 dewar
2002-01-07 23:11 dewar
2002-01-07 22:56 mike stump
2002-01-07 22:26 Tim McDaniel
2002-01-07 19:36 mike stump
2002-01-07 21:21 ` Theodore Tso
2002-01-08 0:19 ` Paul Mackerras
2002-01-08 1:02 ` Richard Henderson
2002-01-07 19:18 mike stump
2002-01-07 19:17 Bernard Dautrevaux
2002-01-07 18:38 mike stump
2002-01-07 13:29 Bernard Dautrevaux
2002-01-07 13:24 Bernard Dautrevaux
2002-01-07 21:49 ` jtv
2002-01-07 22:28 ` Tim Hollebeek
2002-01-07 22:16 ` jtv
2002-01-08 0:27 ` J.A. Magallon
2002-01-08 11:41 ` jtv
2002-01-08 12:36 ` Alexandre Oliva
2002-01-08 12:58 ` jtv
2002-01-09 19:47 ` Gérard Roudier
2002-01-09 20:44 ` jtv
2002-01-09 23:49 ` J.A. Magallon
2002-01-10 10:13 ` Matthias Benkmann
2002-01-10 0:19 ` Peter Barada
2002-01-10 1:47 ` Fergus Henderson
2002-01-10 15:30 ` Peter Barada
2002-01-10 10:44 ` Bernd Petrovitsch
2002-01-06 19:32 dewar
2002-01-06 19:29 dewar
2002-01-06 19:29 dewar
2002-01-06 18:37 mike stump
2002-01-06 18:24 mike stump
2002-01-06 20:37 ` Gabriel Dos Reis
2002-01-06 21:59 ` Paul Mackerras
2002-01-06 22:19 ` Jakub Jelinek
2002-01-07 0:09 ` Tom Rini
2002-01-07 1:40 ` Alexandre Oliva
2002-01-06 18:20 mike stump
2002-01-06 16:22 dewar
2002-01-06 16:39 ` Alan Cox
2002-01-06 19:27 ` Laurent Guerby
2002-01-06 19:43 ` Alan Cox
2002-01-06 13:43 dewar
2002-01-06 13:55 ` Laurent Guerby
2002-01-06 13:41 dewar
2002-01-06 16:58 ` Gabriel Dos Reis
2002-01-06 13:16 dewar
2002-01-06 13:22 ` Gabriel Dos Reis
2002-01-06 13:07 dewar
2002-01-06 13:05 dewar
2002-01-06 13:41 ` Laurent Guerby
2002-01-06 7:56 mike stump
2002-01-06 4:26 dewar
2002-01-06 5:32 ` Paul Mackerras
2002-01-06 11:09 ` Momchil Velikov
2002-01-06 0:52 dewar
2002-01-04 22:43 dewar
2002-01-06 3:40 ` Paul Mackerras
2002-01-04 12:15 dewar
2002-01-04 12:14 dewar
2002-01-03 12:51 dewar
2002-01-03 10:35 Bernard Dautrevaux
2002-01-03 10:05 Bernard Dautrevaux
2002-01-03 10:49 ` Paul Mackerras
2002-01-03 11:59 ` Lars Brinkhoff
2002-01-03 23:53 ` Paul Mackerras
2002-01-04 9:52 ` Lars Brinkhoff
2002-01-05 6:45 ` Paul Mackerras
2002-01-06 0:20 ` Lars Brinkhoff
2002-01-09 9:28 ` Fergus Henderson
2002-01-09 10:58 ` Gabriel Dos Reis
2002-01-03 0:49 dewar
2002-01-03 0:12 dewar
2002-01-03 0:32 ` jtv
2002-01-06 19:37 ` Alexandre Oliva
2002-01-02 23:53 dewar
2002-01-02 23:59 ` Joe Buck
2002-01-03 3:12 ` Paul Mackerras
2002-01-03 15:45 ` Joe Buck
2002-01-02 17:40 Petr Vandrovec
2002-01-02 22:24 ` David Woodhouse
2002-01-02 22:39 ` Joe Buck
2002-01-02 22:59 ` David Woodhouse
2002-01-03 18:44 ` Alexandre Oliva
2002-01-02 10:02 Bernard Dautrevaux
2002-01-02 23:02 ` Paul Mackerras
2002-01-02 23:27 ` Momchil Velikov
2002-01-01 23:03 Momchil Velikov
2002-01-01 23:43 ` Tom Rini
2002-01-02 6:54 ` Momchil Velikov
2002-01-02 15:39 ` Tom Rini
2002-01-02 15:50 ` Jakub Jelinek
2002-01-02 16:45 ` Paul Koning
2002-01-02 14:56 ` Joseph S. Myers
2002-01-02 22:56 ` Paul Mackerras
2002-01-02 23:37 ` Momchil Velikov
2002-01-03 2:51 ` Paul Mackerras
2002-01-03 6:29 ` law
2002-01-03 13:16 ` Lars Brinkhoff
2002-01-04 9:05 ` Florian Weimer
2002-01-04 22:14 ` Paul Mackerras
2002-01-02 10:29 ` Florian Weimer
2002-01-02 10:41 ` Momchil Velikov
2002-01-02 13:11 ` Jakub Jelinek
2002-01-02 15:54 ` Tom Rini
2002-01-02 11:28 ` Aaron Lehmann
2002-01-02 11:40 ` Momchil Velikov
2002-01-02 15:59 ` Tom Rini
2002-01-02 11:48 ` Alan Cox
2002-01-02 19:09 ` Tom Rini
2002-01-02 20:13 ` Joe Buck
2002-01-02 20:42 ` Tom Rini
2002-01-02 21:36 ` Richard Henderson
2002-01-02 22:05 ` Tom Rini
2002-01-02 22:23 ` jtv
2002-01-02 23:12 ` Tom Rini
2002-01-02 23:45 ` jtv
2002-01-03 0:01 ` Tom Rini
2002-01-03 0:07 ` Richard Henderson
2002-01-03 0:16 ` Tom Rini
2002-01-03 1:12 ` Richard Henderson
2002-01-03 0:20 ` jtv
2002-01-03 0:25 ` Alan Cox
2002-01-03 0:35 ` David Woodhouse
2002-01-03 2:10 ` Tom Rini
2002-01-03 22:39 ` Pavel Machek
2002-01-04 9:29 ` Paul Mackerras
2002-01-03 15:46 ` Edgar Toernig
2002-01-03 16:48 ` Momchil Velikov
2002-01-03 17:13 ` jtv
2002-01-03 21:26 ` Daniel Jacobowitz
2002-01-03 2:33 ` Paul Mackerras
2002-01-03 8:32 ` Richard Henderson
2002-01-03 10:03 ` Geert Uytterhoeven
2002-01-03 10:10 ` Paul Mackerras
2002-01-03 22:41 ` Tim Hollebeek
2002-01-04 8:48 ` Florian Weimer
2002-01-02 22:27 ` Richard Henderson
2002-01-02 22:35 ` Tom Rini
2002-01-02 22:44 ` Richard Henderson
2002-01-02 22:50 ` Tom Rini
2002-01-03 22:40 ` Pavel Machek
2002-01-04 8:42 ` Richard Henderson
2002-01-04 8:42 ` Florian Weimer
2002-01-02 23:11 ` Paul Mackerras
2002-01-02 23:26 ` Tom Rini
2002-01-02 23:28 ` Momchil Velikov
2002-01-02 23:34 ` Tom Rini
2002-01-03 0:19 ` jtv
2002-01-03 0:29 ` Tom Rini
2002-01-03 1:03 ` jtv
2002-01-03 1:17 ` Tom Rini
2002-01-03 17:44 ` jtv
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