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 81417388C02F; Mon,  5 Apr 2021 21:27:32 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 81417388C02F
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/98440] [9/10/11 Regression] Accepts ill-formed
 reinterpret_cast<int&&>(1)
Date: Mon, 05 Apr 2021 21:27:31 +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: 10.2.0
X-Bugzilla-Keywords: accepts-invalid
X-Bugzilla-Severity: normal
X-Bugzilla-Who: cvs-commit at gcc dot gnu.org
X-Bugzilla-Status: ASSIGNED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: jason at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 9.4
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-98440-4-b0mROSvqkz@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-98440-4@http.gcc.gnu.org/bugzilla/>
References: <bug-98440-4@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: Mon, 05 Apr 2021 21:27:32 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98440

--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:07f56824fd4da14a48030e698c8eb58de951c741

commit r11-7994-g07f56824fd4da14a48030e698c8eb58de951c741
Author: Jason Merrill <jason@redhat.com>
Date:   Mon Apr 5 15:50:48 2021 -0400

    c++: reinterpret_cast from prvalue to rvalue ref [PR98440]

    In r260622 I allowed this under the general principle that [basic.lval]
    "Whenever a prvalue appears as an operand of an operator that expects a
    glvalue for that operand, the temporary materialization conversion (7.3=
.4)
    is applied to convert the expression to an xvalue."  But
    [expr.reinterpret.cast] specifically excludes creating a temporary in t=
his
    case.

    gcc/cp/ChangeLog:

            PR c++/98440
            * typeck.c (build_reinterpret_cast_1): Don't perform
            temporary materialization.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp0x/rv-cast6.C: Expect reinterpret_cast error.
            * g++.dg/cpp0x/reinterpret_cast2.C: Adjust message.
            * g++.old-deja/g++.jason/rvalue3.C: Likewise.=