From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1888) id 944483857831; Fri, 18 Jun 2021 16:15:12 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 944483857831 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Patrick Palka To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r12-1648] libstdc++: Implement LWG 3557 change to convertible_to X-Act-Checkin: gcc X-Git-Author: Patrick Palka X-Git-Refname: refs/heads/master X-Git-Oldrev: 1aff29d42601927a416a484d6c0fa37a25faae79 X-Git-Newrev: 83faf7eacd2081a373afb6069fd923c2dc497271 Message-Id: <20210618161512.944483857831@sourceware.org> Date: Fri, 18 Jun 2021 16:15:12 +0000 (GMT) X-BeenThere: libstdc++-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libstdc++-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Jun 2021 16:15:12 -0000 https://gcc.gnu.org/g:83faf7eacd2081a373afb6069fd923c2dc497271 commit r12-1648-g83faf7eacd2081a373afb6069fd923c2dc497271 Author: Patrick Palka Date: Fri Jun 18 11:51:33 2021 -0400 libstdc++: Implement LWG 3557 change to convertible_to libstdc++-v3/ChangeLog: * include/std/concepts (convertible_to): Just use declval as per LWG 3557. Diff: --- libstdc++-v3/include/std/concepts | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/libstdc++-v3/include/std/concepts b/libstdc++-v3/include/std/concepts index 4490f534412..7f5421f1475 100644 --- a/libstdc++-v3/include/std/concepts +++ b/libstdc++-v3/include/std/concepts @@ -70,9 +70,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION /// [concept.convertible], concept convertible_to template concept convertible_to = is_convertible_v<_From, _To> - && requires(add_rvalue_reference_t<_From> (&__f)()) { - static_cast<_To>(__f()); - }; + && requires { static_cast<_To>(std::declval<_From>()); }; /// [concept.commonref], concept common_reference_with template