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From: "mark at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/29286] [4.0/4.1/4.2/4.3 Regression] placement new does not change the dynamic type as it should
Date: Tue, 22 May 2007 17:34:00 -0000	[thread overview]
Message-ID: <20070522173439.2553.qmail@sourceware.org> (raw)
In-Reply-To: <bug-29286-10053@http.gcc.gnu.org/bugzilla/>



------- Comment #118 from mark at codesourcery dot com  2007-05-22 18:34 -------
Subject: Re:  [4.0/4.1/4.2/4.3 Regression] placement
 new does not change the dynamic type as it should

gdr at cs dot tamu dot edu wrote:

> Thanks for reminding all those points.  I'll ensure that I make those
> points stand in subsequence messages.

I think it's also worth pointing out to the committee that the more
aggressive aliasing rules (in which only access directly through a union
is allowed) have been GNU C/C++ practice for a long time.  I would guess
that we made this change around the year 2000.  So, there's a large body
of code that conforms to the requirements of the aggressive
interpretation.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29286


  parent reply	other threads:[~2007-05-22 17:34 UTC|newest]

Thread overview: 190+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-09-29 14:14 [Bug libstdc++/29286] New: placement new does not provide required side-effects rguenth at gcc dot gnu dot org
2006-09-29 14:15 ` [Bug libstdc++/29286] " rguenth at gcc dot gnu dot org
2006-09-29 14:17 ` [Bug libstdc++/29286] [4.2 Regression] " rguenth at gcc dot gnu dot org
2006-09-29 14:30 ` pcarlini at suse dot de
2006-09-29 14:38 ` rguenth at gcc dot gnu dot org
2006-09-29 14:52 ` pcarlini at suse dot de
2006-09-29 15:49 ` pinskia at gcc dot gnu dot org
2006-09-29 15:51 ` [Bug libstdc++/29286] [4.2 Regression] placement new does not change the dynamic type as it should pinskia at gcc dot gnu dot org
2006-09-29 16:08 ` pcarlini at suse dot de
2006-09-29 16:19 ` pinskia at gcc dot gnu dot org
2006-09-29 16:23 ` pcarlini at suse dot de
2006-09-29 16:25 ` rguenth at gcc dot gnu dot org
2006-09-29 16:25 ` rguenth at gcc dot gnu dot org
2006-09-29 16:58 ` [Bug libstdc++/29286] [4.0/4.1/4.2 " pinskia at gcc dot gnu dot org
2006-09-29 17:01 ` pinskia at gcc dot gnu dot org
2006-10-01 18:39 ` mmitchel at gcc dot gnu dot org
2006-10-01 23:05 ` mmitchel at gcc dot gnu dot org
2006-10-02  9:32 ` mrs at apple dot com
2006-10-02 17:48 ` mmitchel at gcc dot gnu dot org
2006-10-02 19:28 ` mrs at apple dot com
2006-10-03 16:03 ` ian at airs dot com
2006-10-03 16:13 ` mark at codesourcery dot com
2006-10-03 23:44 ` ian at airs dot com
2006-10-04  5:39 ` mark at codesourcery dot com
2006-10-24  6:53   ` Gabriel Dos Reis
2006-10-09  8:22 ` rguenth at gcc dot gnu dot org
2006-10-24  6:53 ` [Bug libstdc++/29286] [4.0/4.1/4.2/4.3 " gdr at integrable-solutions dot net
2006-12-29 20:28 ` dberlin at gcc dot gnu dot org
2007-01-01  0:41 ` mark at codesourcery dot com
2007-01-02  3:01   ` Daniel Berlin
2007-01-02  3:01 ` dberlin at dberlin dot org
2007-01-02  3:24 ` mark at codesourcery dot com
2007-05-02 15:57 ` ian at airs dot com
2007-05-02 16:11 ` pinskia at gcc dot gnu dot org
2007-05-02 16:14 ` pinskia at gcc dot gnu dot org
2007-05-02 20:41 ` mark at codesourcery dot com
2007-05-03 19:33 ` ian at airs dot com
2007-05-03 20:45 ` pcarlini at suse dot de
2007-05-03 20:49 ` pinskia at gcc dot gnu dot org
2007-05-03 20:59 ` rguenth at gcc dot gnu dot org
2007-05-03 21:25 ` pcarlini at suse dot de
2007-05-04  2:47 ` mark at codesourcery dot com
2007-05-04  3:54 ` bangerth at dealii dot org
2007-05-04  6:37 ` ian at airs dot com
2007-05-04  8:41 ` pcarlini at suse dot de
2007-05-04 10:45 ` rguenth at gcc dot gnu dot org
2007-05-04 11:04 ` pcarlini at suse dot de
2007-05-04 11:08 ` pcarlini at suse dot de
2007-05-04 12:03 ` rguenth at gcc dot gnu dot org
2007-05-04 14:31 ` rguenth at gcc dot gnu dot org
2007-05-04 15:55 ` ian at airs dot com
2007-05-04 15:57 ` rguenth at gcc dot gnu dot org
2007-05-11 23:22 ` ian at airs dot com
2007-05-12  0:36 ` dberlin at dberlin dot org
2007-05-12  9:48 ` rguenth at gcc dot gnu dot org
2007-05-12 11:11 ` rguenth at gcc dot gnu dot org
2007-05-12 13:29 ` dberlin at dberlin dot org
2007-05-12 18:41 ` ian at airs dot com
2007-05-12 18:44 ` ian at airs dot com
2007-05-12 21:48 ` rguenth at gcc dot gnu dot org
2007-05-13 10:04 ` rguenth at gcc dot gnu dot org
2007-05-14  3:45 ` ian at airs dot com
2007-05-14  4:00 ` dberlin at dberlin dot org
2007-05-14  8:25 ` rguenth at gcc dot gnu dot org
2007-05-14 11:44   ` Daniel Berlin
2007-05-14 11:44 ` dberlin at dberlin dot org
2007-05-14 15:20 ` rguenth at gcc dot gnu dot org
2007-05-14 15:38 ` dberlin at dberlin dot org
2007-05-14 16:42 ` ian at airs dot com
2007-05-14 17:14 ` ian at airs dot com
2007-05-14 21:25 ` mmitchel at gcc dot gnu dot org
2007-05-14 21:36 ` ian at airs dot com
2007-05-14 21:37 ` pinskia at gcc dot gnu dot org
2007-05-14 21:40 ` dberlin at dberlin dot org
2007-05-16  5:33 ` ian at airs dot com
2007-05-16  9:57 ` rguenth at gcc dot gnu dot org
2007-05-16 12:06 ` rguenth at gcc dot gnu dot org
2007-05-16 13:49 ` rguenth at gcc dot gnu dot org
2007-05-16 14:02 ` rguenth at gcc dot gnu dot org
2007-05-16 14:37 ` rguenth at gcc dot gnu dot org
2007-05-16 16:08 ` rguenth at gcc dot gnu dot org
2007-05-16 17:02 ` ian at airs dot com
2007-05-16 23:42 ` mark at codesourcery dot com
2007-05-18  6:15 ` ian at airs dot com
2007-05-18  6:25 ` ian at airs dot com
2007-05-18  6:27 ` mark at codesourcery dot com
2007-05-18  8:46 ` rguenth at gcc dot gnu dot org
2007-05-18  8:47 ` rguenth at gcc dot gnu dot org
2007-05-18 13:26 ` gdr at cs dot tamu dot edu
2007-05-18 13:30 ` gdr at cs dot tamu dot edu
2007-05-18 13:46 ` rguenth at gcc dot gnu dot org
2007-05-18 16:25 ` ian at airs dot com
2007-05-18 16:28 ` ian at airs dot com
2007-05-18 21:04   ` Gabriel Dos Reis
2007-05-18 16:36 ` ian at airs dot com
2007-05-18 16:44 ` mark at codesourcery dot com
2007-05-18 17:38 ` ian at airs dot com
2007-05-18 21:12   ` Gabriel Dos Reis
2007-05-18 17:46 ` pcarlini at suse dot de
2007-05-18 17:55 ` pinskia at gcc dot gnu dot org
2007-05-18 18:01 ` mark at codesourcery dot com
2007-05-18 18:03 ` ian at airs dot com
2007-05-18 19:55 ` rguenth at gcc dot gnu dot org
2007-05-18 20:12 ` pcarlini at suse dot de
2007-05-18 20:17 ` mark at codesourcery dot com
2007-05-18 20:27 ` pcarlini at suse dot de
2007-05-18 20:38 ` pcarlini at suse dot de
2007-05-18 21:04 ` gdr at cs dot tamu dot edu
2007-05-18 21:12 ` gdr at cs dot tamu dot edu
2007-05-18 21:16 ` gdr at cs dot tamu dot edu
2007-05-18 21:17 ` gdr at cs dot tamu dot edu
2007-05-18 21:44 ` pcarlini at suse dot de
2007-05-22  9:50 ` rguenth at gcc dot gnu dot org
2007-05-22 15:05 ` mark at codesourcery dot com
2007-05-22 15:54   ` Gabriel Dos Reis
2007-05-22 15:20 ` rguenther at suse dot de
2007-05-22 15:55 ` gdr at cs dot tamu dot edu
2007-05-22 16:20 ` mark at codesourcery dot com
2007-05-22 16:25   ` Gabriel Dos Reis
2007-05-22 16:25 ` gdr at cs dot tamu dot edu
2007-05-22 16:38 ` mark at codesourcery dot com
2007-05-22 16:46   ` Gabriel Dos Reis
2007-05-22 16:47 ` gdr at cs dot tamu dot edu
2007-05-22 16:54 ` mark at codesourcery dot com
2007-05-22 17:02 ` gdr at cs dot tamu dot edu
2007-05-22 17:11 ` dberlin at dberlin dot org
2007-05-22 17:13 ` dberlin at dberlin dot org
2007-05-22 17:20 ` gdr at cs dot tamu dot edu
2007-05-22 17:34 ` mark at codesourcery dot com [this message]
2007-05-22 17:41 ` gdr at cs dot tamu dot edu
2007-05-22 17:55 ` mark at codesourcery dot com
2007-05-22 19:13 ` gdr at cs dot tamu dot edu
2007-05-22 19:42 ` mrs at apple dot com
2007-05-22 19:53 ` gdr at cs dot tamu dot edu
2007-05-23  8:35 ` rguenther at suse dot de
2007-05-23 13:23 ` gdr at cs dot tamu dot edu
2007-05-23 13:43 ` rguenther at suse dot de
2007-05-23 14:24 ` ian at airs dot com
2007-05-23 14:38 ` rguenther at suse dot de
2007-05-23 15:00 ` gdr at cs dot tamu dot edu
2007-05-23 15:43 ` ian at airs dot com
2007-05-23 15:55 ` rguenther at suse dot de
2007-05-23 18:03 ` dberlin at dberlin dot org
2007-05-23 18:44 ` mark at codesourcery dot com
2007-05-23 18:54 ` rguenth at gcc dot gnu dot org
2007-05-23 18:57 ` rguenth at gcc dot gnu dot org
2007-05-23 19:10 ` mark at codesourcery dot com
2007-05-23 19:46 ` rguenth at gcc dot gnu dot org
2007-05-23 19:57 ` rguenth at gcc dot gnu dot org
2007-05-23 20:01 ` joseph at codesourcery dot com
2007-05-23 20:07 ` mark at codesourcery dot com
2007-05-23 20:13 ` mark at codesourcery dot com
2007-05-23 20:16 ` rguenther at suse dot de
2007-05-23 20:27 ` mark at codesourcery dot com
2007-05-23 20:48 ` rguenther at suse dot de
2007-05-23 21:02 ` dberlin at dberlin dot org
2007-05-23 21:13 ` mark at codesourcery dot com
2007-05-23 22:42 ` gdr at cs dot tamu dot edu
2007-05-23 22:50 ` gdr at cs dot tamu dot edu
2007-05-23 22:56 ` gdr at cs dot tamu dot edu
2007-05-23 22:58 ` gdr at cs dot tamu dot edu
2007-05-23 23:58 ` gdr at cs dot tamu dot edu
2007-05-24  0:07 ` gdr at cs dot tamu dot edu
2007-05-24  8:04 ` rguenther at suse dot de
2007-05-24  9:08 ` rguenther at suse dot de
2007-05-24  9:11 ` rguenther at suse dot de
2007-05-24  9:29 ` gdr at cs dot tamu dot edu
2007-05-24  9:33 ` rguenther at suse dot de
2007-05-24  9:47 ` gdr at cs dot tamu dot edu
2007-05-25 23:22 ` ian at airs dot com
2007-05-27 14:57 ` rguenther at suse dot de
2007-05-28 11:14 ` rguenther at suse dot de
2007-05-28 11:24 ` dberlin at dberlin dot org
2007-05-28 17:30 ` ian at airs dot com
2007-05-30 23:19 ` ian at airs dot com
2007-06-04 14:02 ` rguenth at gcc dot gnu dot org
2007-06-05 16:20 ` rguenth at gcc dot gnu dot org
2007-06-05 20:48 ` ian at airs dot com
2007-06-05 21:17 ` rguenther at suse dot de
2007-06-06  5:33 ` ian at airs dot com
2007-06-06  8:41 ` rguenther at suse dot de
2007-06-08  7:50 ` ian at airs dot com
2007-06-08 13:47 ` rguenther at suse dot de
2007-06-09  9:48 ` rguenth at gcc dot gnu dot org
2007-06-09  9:55 ` pcarlini at suse dot de
2007-06-09 12:03 ` bkoz at gcc dot gnu dot org
2007-06-09 19:29 ` mark at codesourcery dot com
2007-06-12 17:48 ` ian at gcc dot gnu dot org
2007-06-12 18:11 ` ian at airs dot com
2010-06-20  0:01 ` schaub-johannes at web dot de

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