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 B254A3851C0C; Fri, 12 Jun 2020 01:17:40 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B254A3851C0C
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
 s=default; t=1591924660;
 bh=gJBsUDIX2BFvTs5jMTQhmIsXuZXF7YZcGetWs3ZFn8I=;
 h=From:To:Subject:Date:In-Reply-To:References:From;
 b=ReAxBrwcOKnC420uoeSXGVmecVyQXNxZdo+Z+MiMlyM4BzGE00HUl1ZzzJpJHWXJE
 eqLwnksBPjmonx2nqYrxyXv2ZFMo6P7RBn7srHSV5DN7GCLs2CxEOMroJ8hiZpZcU+
 dqeCHPIsX2FCorWM999wkTVuOOZrlyYF+qZCdFxk=
From: "amker at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/95638] Legit-looking code doesn't work with -O2
Date: Fri, 12 Jun 2020 01:17:40 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: c++
X-Bugzilla-Version: 10.1.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: amker at gcc dot gnu.org
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-95638-4-gqCSU35nMi@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-95638-4@http.gcc.gnu.org/bugzilla/>
References: <bug-95638-4@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: <http://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: <http://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Fri, 12 Jun 2020 01:17:40 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95638

--- Comment #5 from bin cheng <amker at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #1)
> All I can say is that bisection shows (at least when preprocessed with g++
> 8.3.1 first) that this changed behavior in
> r10-7184-ge4e9a59105a81cdd6c1328b0a5ed9fe4cc82840e
> No time to analyze if it is a bug in the code or on the GCC side.
> CCing patch author.

Thanks for ccing, I will look into it this WE.=