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 E7F733857C6A; Thu, 18 Nov 2021 15:05:43 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E7F733857C6A
From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/102670] Erroneous "missing template arguments" message for
 wrapper of ADL function template
Date: Thu, 18 Nov 2021 15:05:43 +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: 12.0
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: P3
X-Bugzilla-Assigned-To: ppalka at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: 
Message-ID: <bug-102670-4-04jCLpWEbf@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-102670-4@http.gcc.gnu.org/bugzilla/>
References: <bug-102670-4@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: Thu, 18 Nov 2021 15:05:44 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102670

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

https://gcc.gnu.org/g:6fa8e0896c6ec96eddcedb2b92502a7bbb525c03

commit r12-5372-g6fa8e0896c6ec96eddcedb2b92502a7bbb525c03
Author: Patrick Palka <ppalka@redhat.com>
Date:   Thu Nov 18 10:04:27 2021 -0500

    c++: unqual lookup performed twice w/ template-id ADL [PR102670]

    Here we're incorrectly performing unqualified lookup of 'adl' again at
    substitution time for the call adl<I>(t) (for which name lookup at parse
    time found nothing) which causes us to reject the testcase because the
    second unqualified lookup finds the later-declared variable template
    'adl', leading to confusion.  Fixed thusly.

    The testcase concepts-recursive-sat1.C needed to be adjusted to use ADL
    proper instead of relying on this incorrect second unqualified lookup.

            PR c++/102670

    gcc/cp/ChangeLog:

            * pt.c (tsubst_copy_and_build) <case CALL_EXPR>: When looking
            for an identifier callee in the koenig_p case, also look through
            TEMPLATE_ID_EXPR.  Use tsubst_copy to substitute through the
            template arguments of the template-id.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp2a/concepts-recursive-sat1.C: Adjust to use ADL
            proper.
            * g++.dg/cpp2a/fn-template23.C: New test.=