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Wed, 19 Jul 2023 19:32:57 GMT Received: from mxout22.s.uw.edu (mxout22.s.uw.edu [128.95.242.222]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3rxejem6dd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Jul 2023 19:32:57 +0000 Received: from smtp.washington.edu (smtp.washington.edu [140.142.234.157]) by mxout22.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 36JJWpQ6001325 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 19 Jul 2023 12:32:51 -0700 X-Auth-Received: from localhost.localdomain ([10.18.194.223]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 36JJWowG020101 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Wed, 19 Jul 2023 12:32:51 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, Ken Matsui Subject: [PATCH v2] libstdc++: Define _GLIBCXX_HAS_BUILTIN_TRAIT Date: Wed, 19 Jul 2023 12:32:42 -0700 Message-ID: <20230719193242.59472-1-kmatsui@gcc.gnu.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230718223233.15328-1-kmatsui@gcc.gnu.org> References: <20230718223233.15328-1-kmatsui@gcc.gnu.org> MIME-Version: 1.0 X-Proofpoint-GUID: aYce5Pxvwo5tAgAkn97zvrfob80AGjLM X-Proofpoint-ORIG-GUID: aYce5Pxvwo5tAgAkn97zvrfob80AGjLM X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-19_14,2023-07-19_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1034 priorityscore=1501 malwarescore=0 mlxlogscore=948 lowpriorityscore=0 phishscore=0 spamscore=0 impostorscore=0 adultscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307190176 X-Spam-Status: No, score=-13.3 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NEUTRAL, TXREP, T_SCC_BODY_TEXT_LINE 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 defines _GLIBCXX_HAS_BUILTIN_TRAIT macro, which will be used as a flag to toggle the use of built-in traits in the type_traits header through _GLIBCXX_NO_BUILTIN_TRAITS macro, without needing to modify the source code. libstdc++-v3/ChangeLog: * include/bits/c++config (_GLIBCXX_HAS_BUILTIN_TRAIT): Define. (_GLIBCXX_HAS_BUILTIN): Keep defined. Signed-off-by: Ken Matsui --- libstdc++-v3/include/bits/c++config | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/bits/c++config b/libstdc++-v3/include/bits/c++config index dd47f274d5f..984985d6fff 100644 --- a/libstdc++-v3/include/bits/c++config +++ b/libstdc++-v3/include/bits/c++config @@ -854,7 +854,15 @@ namespace __gnu_cxx # define _GLIBCXX_HAVE_BUILTIN_LAUNDER 1 #endif -#undef _GLIBCXX_HAS_BUILTIN +// Returns 1 if _GLIBCXX_NO_BUILTIN_TRAITS is not defined and the compiler +// has a corresponding built-in type trait, 0 otherwise. +// _GLIBCXX_NO_BUILTIN_TRAITS can be defined to disable the use of built-in +// traits. +#ifndef _GLIBCXX_NO_BUILTIN_TRAITS +# define _GLIBCXX_HAS_BUILTIN_TRAIT(BT) _GLIBCXX_HAS_BUILTIN(BT) +#else +# define _GLIBCXX_HAS_BUILTIN_TRAIT(BT) 0 +#endif // Mark code that should be ignored by the compiler, but seen by Doxygen. #define _GLIBCXX_DOXYGEN_ONLY(X)