From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
 id 04B86384602A; Thu, 30 Jun 2022 06:47:59 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 04B86384602A
From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/106131] [10/11/12/13 Regression]
 -fstrict-aliasing breaks normal program that does not use any pointer or
 reference
Date: Thu, 30 Jun 2022 06:47:59 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 12.1.0
X-Bugzilla-Keywords: alias, wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: rguenther at suse dot de
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.5
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-106131-4-zzQid3dJYI@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-106131-4@http.gcc.gnu.org/bugzilla/>
References: <bug-106131-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Thu, 30 Jun 2022 06:48:00 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106131

--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 29 Jun 2022, mpolacek at gcc dot gnu.org wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106131
>=20
> --- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
> Started with
>=20
> commit 8403c2cf5f66758fc78a01a675b0d218fded0202
> Author: Richard Biener <rguenther@suse.de>
> Date:   Mon Nov 24 14:07:18 2014 +0000

I think that just exposed it.  Btw, I've not got to the point=20
understanding what actual transform makes the testcase fail (nor
spot the relevant difference in .optimized).=