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 7E80F385E459; Tue, 29 Mar 2022 05:54:46 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7E80F385E459
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/105035] [11 Regression] tree check: expected field_decl,
 have identifier_node in operand_equal_p, at fold-const.c:3335 since
 r11-5181-g0862d007b564eca8
Date: Tue, 29 Mar 2022 05:54:46 +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: 11.2.1
X-Bugzilla-Keywords: ice-on-valid-code
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: jakub at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 11.3
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-105035-4-B1iZqSAypY@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-105035-4@http.gcc.gnu.org/bugzilla/>
References: <bug-105035-4@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: Tue, 29 Mar 2022 05:54:46 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105035

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:cb2520db3a35758affc7b90b8fefe927fc972516

commit r11-9735-gcb2520db3a35758affc7b90b8fefe927fc972516
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Mar 24 12:23:51 2022 +0100

    fold-const: Handle C++ dependent COMPONENT_REFs in operand_equal_p
[PR105035]

    As mentioned in the PR, operand_equal_p already contains some hacks so =
that
    it can be called already on pre-instantiation C++ trees from templates,
    but the recent change to compare DECL_FIELD_OFFSET in the COMPONENT_REF
    case broke this.  Many such COMPONENT_REFs are already punted on earlier
    because they have NULL TREE_TYPE, but in this case the code knows what
    type they have but still uses an IDENTIFIER_NODE as second operand
    of COMPONENT_REF (I think SCOPE_REF is something that could be used too=
).

    The following patch looks at those DECL_FIELD_*OFFSET fields only if
    both field[01] args are FIELD_DECLs and otherwise keeps it to the
    earlier OP_SAME (1) check that guards this whole block.

    2022-03-24  Jakub Jelinek  <jakub@redhat.com>

            PR c++/105035
            * fold-const.c (operand_equal_p) <case COMPONENT_REF>: If either
            field0 or field1 is not a FIELD_DECL, return false.

            * g++.dg/warn/Wduplicated-cond2.C: New test.

    (cherry picked from commit 8698ff67cdff4364c8adad2921ed532359a155ec)=