From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 2032A3858006; Wed, 5 Jan 2022 17:07:18 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2032A3858006 From: "ppalka at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/89074] valid pointer equality constexpr comparison rejected Date: Wed, 05 Jan 2022 17:07:17 +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: 9.0 X-Bugzilla-Keywords: rejects-valid X-Bugzilla-Severity: normal X-Bugzilla-Who: ppalka at gcc dot gnu.org X-Bugzilla-Status: NEW 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: In-Reply-To: References: 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 05 Jan 2022 17:07:18 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D89074 --- Comment #9 from Patrick Palka --- (In reply to Jakub Jelinek from comment #8) > At least when not constant evaluating that, a + 2 can be equal to b + 0 or > can be different, shouldn't we reject at least that? I think so, according to https://eel.is/c++draft/expr.eq#3.1 and http://eel.is/c++draft/expr.const#5.25=