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 E42B63988886; Fri, 16 Apr 2021 15:12:08 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E42B63988886
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/99803] [9/10/11 Regression] ICE: in make_typename_type, at
 cp/decl.c:4057
Date: Fri, 16 Apr 2021 15:12:08 +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: 11.0
X-Bugzilla-Keywords: ice-on-invalid-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: mpolacek at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 9.4
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-99803-4-e33RL2TAdv@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-99803-4@http.gcc.gnu.org/bugzilla/>
References: <bug-99803-4@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: Fri, 16 Apr 2021 15:12:09 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99803

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

https://gcc.gnu.org/g:70f2bff43aadd2fcc0595bf9f4bab72647529655

commit r11-8220-g70f2bff43aadd2fcc0595bf9f4bab72647529655
Author: Marek Polacek <polacek@redhat.com>
Date:   Wed Apr 14 17:57:15 2021 -0400

    c++: ICE with bogus late return type [PR99803]

    Here we ICE when compiling this code in C++20, because we're trying to
    slam a 'typename' after the ->.  The cp_parser_template_id call just
    before the spot I'm changing parsed A::template A<int> as a BASELINK
    that contains a constructor, but make_typename_type crashes on that.

    This patch makes make_typename_type more robust instead of checking
    for is_overloaded_fn prior calling it.

    gcc/cp/ChangeLog:

            PR c++/99803
            * decl.c (make_typename_type): Give an error and return when
            name is is_overloaded_fn.
            * parser.c (cp_parser_class_name): Don't check is_overloaded_fn
            before calling make_typename_type.

    gcc/testsuite/ChangeLog:

            PR c++/99803
            * g++.dg/cpp2a/typename14.C: Don't expect particular error
            messages.
            * g++.dg/cpp2a/typename19.C: New test.=