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 CA09F385B52A; Thu, 30 Mar 2023 22:26:12 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CA09F385B52A
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1680215172;
	bh=wVfKvqv02jECJVhHATAsdgRx5swP4nujgIfUwgVq6Wk=;
	h=From:To:Subject:Date:In-Reply-To:References:From;
	b=ShbgifCRCo+p2b0afbZ9nIYH1re0YypwI0yMbIV43PhNOhvY3XUrJaYA+jHFQEAAE
	 nBH2LEQEwEX2iAmY4RKKppCrS7D4hgpEWQf5YtrGBu1zVewnbp6qbRhE6asA6QXjbV
	 Ar5X2szA8/TrLtH15zAamdAH5HozaGvu3NZT4Bjk=
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/105452] [10/11/12/13 Regression] static_assert inside
 anonymous union inside a templated struct causes invalid "inaccessible within
 this context" error
Date: Thu, 30 Mar 2023 22:26:12 +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: 13.0
X-Bugzilla-Keywords: rejects-valid
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: 10.5
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-105452-4-25EQyfibk4@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-105452-4@http.gcc.gnu.org/bugzilla/>
References: <bug-105452-4@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
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105452

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:58df5350753c00f140c86e60ba5ce0cac686ec4b

commit r13-6949-g58df5350753c00f140c86e60ba5ce0cac686ec4b
Author: Jason Merrill <jason@redhat.com>
Date:   Wed Mar 29 23:27:38 2023 -0400

    c++: anonymous union member reference [PR105452]

    While parsing the anonymous union, we don't yet know that it's an anony=
mous
    union, so we build the reference to 'v' in the static_assert relative to
the
    union type.  But at instantiation time we know it's an anonymous union,=
 so
    we need to avoid trying to check access for 'v' in the union again; the
    simplest approach seemed to be to make accessible_p step out to the
    containing class.

    While looking at this I also noticed that we were having trouble with D=
MI
in
    an anonymous union referring to members of the containing class; there
    we just need to give current_class_ptr the right type.

            PR c++/105452

    gcc/cp/ChangeLog:

            * search.cc (type_context_for_name_lookup): New.
            (accessible_p): Handle anonymous union.
            * init.cc (maybe_instantiate_nsdmi_init): Use
            type_context_for_name_lookup.
            * parser.cc (cp_parser_class_specifier): Likewise.
            * cp-tree.h (type_context_for_name_lookup): Declare.

    gcc/testsuite/ChangeLog:

            * g++.dg/lookup/anon8.C: New test.=