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Sun, 2 Apr 2023 07:55:03 GMT Received: from mxout24.cac.washington.edu (mxout24.cac.washington.edu [140.142.234.158]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3ppby85pd1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 02 Apr 2023 07:55:03 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.54]) by mxout24.cac.washington.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 3327sY7I019634 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 2 Apr 2023 00:54:34 -0700 X-Auth-Received: from localhost.localdomain ([10.154.74.245]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 3327rKKh003104 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Sun, 2 Apr 2023 00:54:34 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, Ken Matsui Subject: [PATCH v3 2/6] libstdc++: use new built-in trait __is_reference for std::is_reference Date: Sun, 2 Apr 2023 00:53:10 -0700 Message-Id: <20230402075314.39853-3-kmatsui@cs.washington.edu> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230402075314.39853-1-kmatsui@cs.washington.edu> References: <20230330183911.12640-1-kmatsui@cs.washington.edu> <20230402075314.39853-1-kmatsui@cs.washington.edu> MIME-Version: 1.0 X-Proofpoint-GUID: a5_4Vdv9IHitzNz1G-05ycKsr5_7h71d X-Proofpoint-ORIG-GUID: a5_4Vdv9IHitzNz1G-05ycKsr5_7h71d X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-31_07,2023-03-31_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 bulkscore=0 adultscore=0 phishscore=0 mlxscore=0 impostorscore=0 priorityscore=1501 spamscore=0 clxscore=1015 mlxlogscore=833 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304020071 X-Spam-Status: No, score=-14.0 required=5.0 tests=BAYES_00, GIT_PATCH_0, KAM_DMARC_STATUS, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Ken Matsui via Gcc-patches From: Ken Matsui Reply-To: Ken Matsui Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org Sender: "Gcc-patches" This patch gets std::is_reference to dispatch to new built-in trait __is_reference. libstdc++-v3/ChangeLog: * include/std/type_traits (is_reference): Use __is_reference built-in trait. Signed-off-by: Ken Matsui --- libstdc++-v3/include/std/type_traits | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits index 2bd607a8b8f..58a732735c8 100644 --- a/libstdc++-v3/include/std/type_traits +++ b/libstdc++-v3/include/std/type_traits @@ -639,6 +639,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION // Composite type categories. /// is_reference +#if __has_builtin(__is_reference) + template + struct is_reference + : public __bool_constant<__is_reference(_Tp)> + { }; +#else template struct is_reference : public false_type @@ -653,6 +659,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION struct is_reference<_Tp&&> : public true_type { }; +#endif /// is_arithmetic template