From: Robert Dewar <dewar@adacore.com>
To: Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
Cc: gcc-patches@gcc.gnu.org, gcc@gcc.gnu.org, mark@codesourcery.com,
rguenther@suse.de
Subject: Re: [PATCH][4.3] Deprecate -ftrapv
Date: Sat, 01 Mar 2008 13:55:00 -0000 [thread overview]
Message-ID: <47C9604B.9000505@adacore.com> (raw)
In-Reply-To: <10803011125.AA00926@vlsi1.ultra.nyu.edu>
Richard Kenner wrote:
> Clearly. My point was that Ada doesn't need a *broken* -ftrapv. So if
> there's no hope of fixing it, we might as well deprecate it.
Sure, but right now we have the start of a constructive discussion of
how to fix it, so the best thing would be to contribute positively to
that and see where it gets us :-)
No one needs a broken anything, but we have to be careful about
deprecating things just because they are broken! We have to be
really sure that there's no hope of fixing it. In this case, the
feature would be very useful in debugging C (especially given
GCC's aggressive use of the undefinedness of arithmetic overflow
in C, it would definitely be nice to be able to test at -O0 -ftrapv
and have this find overflows).
next prev parent reply other threads:[~2008-03-01 13:55 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.64.0803010041110.4133@zhemvz.fhfr.qr>
2008-03-01 0:04 ` Richard Guenther
2008-03-01 0:05 ` Mark Mitchell
2008-03-01 0:11 ` Richard Kenner
2008-03-01 2:05 ` Robert Dewar
2008-03-01 2:17 ` Joseph S. Myers
2008-03-01 2:33 ` Robert Dewar
2008-03-01 13:19 ` Joseph S. Myers
2008-03-01 14:05 ` Paolo Bonzini
2008-03-01 11:24 ` Richard Kenner
2008-03-01 13:55 ` Robert Dewar [this message]
2008-03-01 14:12 ` Richard Kenner
2008-03-01 14:18 ` Robert Dewar
2008-03-01 0:14 ` Richard Guenther
2008-03-01 1:04 ` Mark Mitchell
2008-03-01 1:49 ` Joseph S. Myers
2008-03-01 1:54 ` Mark Mitchell
2008-03-01 12:32 ` Richard Guenther
2008-03-01 13:10 ` Joseph S. Myers
2008-03-01 13:38 ` Robert Dewar
2008-03-01 13:57 ` Richard Guenther
2008-03-01 14:05 ` Robert Dewar
2008-03-01 19:53 ` Florian Weimer
2008-03-01 20:11 ` Robert Dewar
2008-03-01 21:19 ` Florian Weimer
2008-03-01 21:43 ` Robert Dewar
2008-03-01 21:48 ` Robert Dewar
2008-03-01 14:14 ` Richard Kenner
2008-03-01 13:50 ` Richard Guenther
2008-03-01 18:27 ` Joseph S. Myers
2008-03-01 14:06 ` Richard Kenner
2008-03-01 14:10 ` Richard Guenther
2008-03-01 14:15 ` Robert Dewar
2008-03-01 14:13 ` Robert Dewar
2008-03-01 14:15 ` Paolo Bonzini
2008-03-01 18:32 ` Joseph S. Myers
2008-03-02 10:47 ` Mark Mitchell
2008-03-02 11:08 ` Richard Guenther
2008-03-02 11:52 ` Robert Dewar
2008-03-03 22:45 ` Eric Botcazou
2008-03-04 2:38 ` Robert Dewar
2008-03-03 18:36 ` Ian Lance Taylor
2008-03-02 11:29 ` Robert Dewar
2008-03-02 11:36 ` Richard Kenner
2008-03-02 14:24 ` Frank Ch. Eigler
2008-03-02 14:31 ` Robert Dewar
2008-03-02 15:14 ` Frank Ch. Eigler
2008-03-02 15:21 ` Robert Dewar
2008-03-02 15:48 ` Frank Ch. Eigler
2008-03-02 16:08 ` Robert Dewar
2008-03-02 15:22 ` Robert Dewar
2008-03-01 19:58 ` Florian Weimer
2008-03-01 20:04 ` Florian Weimer
2008-03-01 20:12 ` Robert Dewar
2008-03-01 21:25 ` Florian Weimer
2008-03-01 21:45 ` Robert Dewar
2008-03-01 12:31 ` Richard Guenther
2008-03-01 14:00 ` Paolo Bonzini
2008-03-02 13:00 ` Joseph S. Myers
2008-03-02 13:03 ` Richard Guenther
2008-03-05 22:46 ` Ken Raeburn
2008-03-01 0:16 ` David Daney
2008-03-01 2:08 ` Robert Dewar
2008-03-01 6:54 ` Tom Tromey
2008-03-01 0:12 ` Joseph S. Myers
2008-03-01 0:23 ` Richard Guenther
2008-03-01 0:49 ` Joseph S. Myers
2008-03-01 1:57 ` Robert Dewar
2008-03-01 12:33 ` Richard Guenther
2008-03-01 13:08 ` Robert Dewar
[not found] ` <fqbn6k$d5j$1@ger.gmane.org>
2008-03-01 13:58 ` Robert Dewar
2008-03-01 14:00 ` Richard Guenther
2008-03-03 22:53 ` Eric Botcazou
2008-03-04 2:39 ` Robert Dewar
2008-03-01 22:16 FX Coudert
2008-03-01 22:31 ` Robert Dewar
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