From: Steven Bosscher <stevenb@suse.de>
To: gcc@gcc.gnu.org
Cc: Gabriel Dos Reis <gdr@integrable-solutions.net>,
Andrew Pinski <pinskia@physics.uc.edu>
Subject: Re: signed is undefined and has been since 1992 (in GCC)
Date: Tue, 28 Jun 2005 06:55:00 -0000 [thread overview]
Message-ID: <200506280855.03338.stevenb@suse.de> (raw)
In-Reply-To: <m3hdfjhxok.fsf@uniton.integrable-solutions.net>
On Tuesday 28 June 2005 07:12, Gabriel Dos Reis wrote:
> For the concrete case at issue, if the hardware I'm writing the C/C++
> programs for consistently displays modulo arithmetics for signed
> integer type, Andrew can you tell me why GCC should deny me access
> to that functionally where it actually can?
Because it disallows compiler transformations? E.g. suddenly a
loop with a signed variable as the loop counter may wrap around,
which that means some transformations that are safe now would
no longer be safe.
Gr.
Steven
next prev parent reply other threads:[~2005-06-28 6:55 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-28 4:08 Andrew Pinski
2005-06-28 4:20 ` Michael Veksler
2005-06-28 9:49 ` Robert Dewar
2005-06-28 4:34 ` Gabriel Dos Reis
2005-06-28 4:50 ` Andrew Pinski
2005-06-28 5:13 ` Gabriel Dos Reis
2005-06-28 5:34 ` Andrew Pinski
2005-06-28 6:01 ` Gabriel Dos Reis
2005-06-28 9:18 ` Robert Dewar
2005-06-28 11:50 ` Gabriel Dos Reis
2005-06-28 12:07 ` Robert Dewar
2005-06-28 12:33 ` Gabriel Dos Reis
2005-06-28 12:57 ` Robert Dewar
2005-06-28 13:19 ` Gabriel Dos Reis
2005-06-28 22:58 ` Georg Bauhaus
2005-06-28 23:53 ` Gabriel Dos Reis
2005-06-29 0:27 ` Robert Dewar
2005-06-29 0:43 ` Gabriel Dos Reis
2005-06-29 0:48 ` Robert Dewar
2005-06-29 1:14 ` Gabriel Dos Reis
2005-06-29 1:21 ` Diego Novillo
2005-06-29 2:19 ` Marcin Dalecki
2005-06-29 3:13 ` Scott Robert Ladd
2005-06-28 14:24 ` Olivier Galibert
2005-06-28 14:28 ` Jonathan Wilson
2005-06-28 14:42 ` Olivier Galibert
2005-06-28 14:39 ` Dave Korn
2005-06-28 14:52 ` Olivier Galibert
2005-06-28 15:01 ` Robert Dewar
2005-06-28 15:04 ` Andrew Haley
2005-06-28 17:18 ` Olivier Galibert
2005-06-28 17:36 ` Dave Korn
2005-06-28 18:02 ` Olivier Galibert
2005-06-28 18:36 ` Dave Korn
2005-06-28 18:56 ` Gabriel Dos Reis
2005-06-28 19:10 ` Olivier Galibert
2005-06-28 19:13 ` Andrew Pinski
2005-06-28 19:20 ` Robert Dewar
2005-06-28 21:48 ` Joe Buck
2005-06-28 19:25 ` Gabriel Dos Reis
2005-06-28 19:32 ` Robert Dewar
2005-06-28 19:48 ` Gabriel Dos Reis
2005-06-28 20:37 ` Robert Dewar
2005-06-28 20:58 ` Gabriel Dos Reis
2005-06-28 21:57 ` Robert Dewar
2005-06-28 21:44 ` Joe Buck
2005-06-28 21:50 ` Olivier Galibert
2005-06-28 21:59 ` Robert Dewar
2005-06-28 18:52 ` Robert Dewar
2005-06-28 19:17 ` Olivier Galibert
2005-06-28 19:21 ` Robert Dewar
2005-06-28 20:18 ` Paul Koning
2005-06-28 20:24 ` Robert Dewar
2005-06-28 21:41 ` Joe Buck
2005-06-28 21:53 ` Michael Veksler
2005-06-28 23:05 ` Michael Veksler
2005-07-02 17:15 ` Florian Weimer
2005-07-02 18:59 ` Gabriel Dos Reis
2005-07-02 23:20 ` Robert Dewar
2005-07-03 0:07 ` Gabriel Dos Reis
2005-07-03 9:49 ` Robert Dewar
2005-07-02 23:12 ` Nicholas Nethercote
2005-07-02 23:20 ` Robert Dewar
2005-07-03 0:13 ` Gabriel Dos Reis
2005-07-03 9:54 ` Robert Dewar
2005-07-03 10:02 ` Florian Weimer
2005-07-03 10:10 ` Robert Dewar
2005-07-03 12:01 ` Gabriel Dos Reis
2005-07-14 7:21 ` Marc Espie
2005-07-02 17:06 ` Florian Weimer
2005-06-28 17:51 ` Joe Buck
2005-06-28 18:21 ` Gabriel Dos Reis
2005-06-28 18:53 ` Robert Dewar
2005-06-28 18:28 ` Olivier Galibert
2005-06-28 18:38 ` Dave Korn
2005-06-28 18:50 ` Robert Dewar
2005-06-28 19:02 ` Gabriel Dos Reis
2005-06-28 19:17 ` Robert Dewar
2005-06-28 19:43 ` Gabriel Dos Reis
2005-06-28 20:31 ` Robert Dewar
2005-06-28 20:51 ` Gabriel Dos Reis
2005-06-28 20:59 ` Robert Dewar
2005-06-28 21:20 ` Gabriel Dos Reis
2005-06-28 21:27 ` Paul Koning
2005-06-28 21:39 ` Andreas Schwab
2005-06-28 21:35 ` Joe Buck
2005-06-28 22:09 ` Joseph S. Myers
2005-06-28 22:16 ` Falk Hueffner
2005-06-29 6:59 ` Eric Botcazou
2005-06-28 22:19 ` Robert Dewar
2005-06-28 16:42 ` Joe Buck
2005-06-28 17:10 ` Dave Korn
2005-06-28 17:21 ` Joe Buck
2005-06-28 22:41 ` Georg Bauhaus
2005-06-28 14:47 ` Gabriel Dos Reis
2005-06-28 16:38 ` Joe Buck
2005-06-28 21:59 ` Mike Stump
2005-06-28 13:47 ` Gabriel Paubert
2005-06-28 13:52 ` Andrew Pinski
2005-06-28 14:33 ` Robert Dewar
2005-06-28 12:08 ` Robert Dewar
2005-06-28 12:34 ` Gabriel Dos Reis
2005-06-28 7:25 ` Michael Veksler
2005-06-28 16:32 ` Joe Buck
2005-06-28 16:56 ` Joe Buck
2005-06-28 17:03 ` Gabriel Dos Reis
2005-06-28 17:34 ` Joe Buck
2005-06-28 18:09 ` Gabriel Dos Reis
2005-06-28 17:35 ` Diego Novillo
2005-06-28 6:55 ` Steven Bosscher [this message]
2005-06-28 7:20 ` Michael Veksler
2005-06-28 7:39 ` Falk Hueffner
2005-06-28 12:08 ` Gabriel Dos Reis
2005-06-28 12:01 ` Gabriel Dos Reis
2005-06-28 16:59 Morten Welinder
2005-06-28 17:23 ` Olivier Galibert
2005-06-28 18:44 ` Michael Veksler
2005-06-28 17:41 Paul Schlie
[not found] <2382433.1119938227627.JavaMail.root@dtm1eusosrv72.dtm.ops.eu.uu.net>
2005-06-28 19:44 ` Toon Moene
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