From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-00641c01.pphosted.com (mx0a-00641c01.pphosted.com [205.220.165.146]) by sourceware.org (Postfix) with ESMTPS id 920373853559; Sun, 11 Jun 2023 02:49:18 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 920373853559 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=cs.washington.edu Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=cs.washington.edu Received: from pps.filterd (m0247470.ppops.net [127.0.0.1]) by mx0a-00641c01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 35B2m8Ql011069; Sun, 11 Jun 2023 02:49:17 GMT Received: from mxout21.s.uw.edu (mxout21.s.uw.edu [140.142.32.139]) by mx0a-00641c01.pphosted.com (PPS) with ESMTPS id 3r53780dt4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 11 Jun 2023 02:49:17 +0000 Received: from smtp.washington.edu (smtp.washington.edu [128.208.60.132]) by mxout21.s.uw.edu (8.14.4+UW20.07/8.14.4+UW22.04) with ESMTP id 35B2mjZR005429 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 10 Jun 2023 19:48:45 -0700 X-Auth-Received: from localhost.localdomain ([10.154.74.234]) (authenticated authid=kmatsui) by smtp.washington.edu (8.16.1+UW21.10/8.14.4+UW19.10) with ESMTPSA id 35B2l2eE007901 (version=TLSv1.2 cipher=DHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Sat, 10 Jun 2023 19:48:45 -0700 X-UW-Orig-Sender: kmatsui@smtp.washington.edu From: Ken Matsui To: gcc-patches@gcc.gnu.org Cc: libstdc++@gcc.gnu.org, Ken Matsui Subject: [PATCH v4 3/6] c++: implement __is_function built-in trait Date: Sat, 10 Jun 2023 19:43:10 -0700 Message-ID: <20230611024657.42846-4-kmatsui@cs.washington.edu> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230611024657.42846-1-kmatsui@cs.washington.edu> References: <20230402075314.39853-1-kmatsui@cs.washington.edu> <20230611024657.42846-1-kmatsui@cs.washington.edu> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: OpzYdD9nq78ObXGHinqDUXfUQOf1qNNS X-Proofpoint-ORIG-GUID: OpzYdD9nq78ObXGHinqDUXfUQOf1qNNS X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.573,FMLib:17.11.176.26 definitions=2023-06-10_18,2023-06-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 mlxscore=0 spamscore=0 phishscore=0 suspectscore=0 mlxlogscore=999 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306110024 X-Spam-Status: No, score=-14.0 required=5.0 tests=BAYES_00,GIT_PATCH_0,KAM_DMARC_STATUS,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_PASS,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 List-Id: This patch implements built-in trait for std::is_function. gcc/cp/ChangeLog: * cp-trait.def: Define __is_function. * constraint.cc (diagnose_trait_expr): Handle CPTK_IS_FUNCTION. * semantics.cc (trait_expr_value): Likewise. (finish_trait_expr): Likewise. gcc/testsuite/ChangeLog: * g++.dg/ext/has-builtin-1.C: Test existence of __is_function. * g++.dg/ext/is_function.C: New test. Signed-off-by: Ken Matsui --- gcc/cp/constraint.cc | 3 ++ gcc/cp/cp-trait.def | 1 + gcc/cp/semantics.cc | 4 ++ gcc/testsuite/g++.dg/ext/has-builtin-1.C | 3 ++ gcc/testsuite/g++.dg/ext/is_function.C | 58 ++++++++++++++++++++++++ 5 files changed, 69 insertions(+) create mode 100644 gcc/testsuite/g++.dg/ext/is_function.C diff --git a/gcc/cp/constraint.cc b/gcc/cp/constraint.cc index f6951ee2670..927605c6cb7 100644 --- a/gcc/cp/constraint.cc +++ b/gcc/cp/constraint.cc @@ -3754,6 +3754,9 @@ diagnose_trait_expr (tree expr, tree args) case CPTK_IS_UNION: inform (loc, " %qT is not a union", t1); break; + case CPTK_IS_FUNCTION: + inform (loc, " %qT is not a function", t1); + break; case CPTK_IS_AGGREGATE: inform (loc, " %qT is not an aggregate", t1); break; diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def index 1e3310cd682..3cd3babc242 100644 --- a/gcc/cp/cp-trait.def +++ b/gcc/cp/cp-trait.def @@ -83,6 +83,7 @@ DEFTRAIT_EXPR (IS_TRIVIALLY_ASSIGNABLE, "__is_trivially_assignable", 2) DEFTRAIT_EXPR (IS_TRIVIALLY_CONSTRUCTIBLE, "__is_trivially_constructible", -1) DEFTRAIT_EXPR (IS_TRIVIALLY_COPYABLE, "__is_trivially_copyable", 1) DEFTRAIT_EXPR (IS_UNION, "__is_union", 1) +DEFTRAIT_EXPR (IS_FUNCTION, "__is_function", 1) DEFTRAIT_EXPR (REF_CONSTRUCTS_FROM_TEMPORARY, "__reference_constructs_from_temporary", 2) DEFTRAIT_EXPR (REF_CONVERTS_FROM_TEMPORARY, "__reference_converts_from_temporary", 2) /* FIXME Added space to avoid direct usage in GCC 13. */ diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc index 2f37bc353a1..b976633645a 100644 --- a/gcc/cp/semantics.cc +++ b/gcc/cp/semantics.cc @@ -12072,6 +12072,9 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2) case CPTK_IS_ENUM: return type_code1 == ENUMERAL_TYPE; + case CPTK_IS_FUNCTION: + return type_code1 == FUNCTION_TYPE; + case CPTK_IS_FINAL: return CLASS_TYPE_P (type1) && CLASSTYPE_FINAL (type1); @@ -12293,6 +12296,7 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2) case CPTK_IS_UNION: case CPTK_IS_SAME: case CPTK_IS_REFERENCE: + case CPTK_IS_FUNCTION: break; case CPTK_IS_LAYOUT_COMPATIBLE: diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C b/gcc/testsuite/g++.dg/ext/has-builtin-1.C index b697673790c..90eb00ebf2d 100644 --- a/gcc/testsuite/g++.dg/ext/has-builtin-1.C +++ b/gcc/testsuite/g++.dg/ext/has-builtin-1.C @@ -149,3 +149,6 @@ #if !__has_builtin (__is_reference) # error "__has_builtin (__is_reference) failed" #endif +#if !__has_builtin (__is_function) +# error "__has_builtin (__is_function) failed" +#endif diff --git a/gcc/testsuite/g++.dg/ext/is_function.C b/gcc/testsuite/g++.dg/ext/is_function.C new file mode 100644 index 00000000000..2e1594b12ad --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/is_function.C @@ -0,0 +1,58 @@ +// { dg-do compile { target c++11 } } + +#include + +using namespace __gnu_test; + +#define SA(X) static_assert((X),#X) +#define SA_TEST_CATEGORY(TRAIT, TYPE, EXPECT) \ + SA(TRAIT(TYPE) == EXPECT); \ + SA(TRAIT(const TYPE) == EXPECT); \ + SA(TRAIT(volatile TYPE) == EXPECT); \ + SA(TRAIT(const volatile TYPE) == EXPECT) + +struct A +{ void fn(); }; + +template +struct AHolder { }; + +template +struct AHolder +{ using type = U; }; + +// Positive tests. +SA(__is_function(int (int))); +SA(__is_function(ClassType (ClassType))); +SA(__is_function(float (int, float, int[], int&))); +SA(__is_function(int (int, ...))); +SA(__is_function(bool (ClassType) const)); +SA(__is_function(AHolder::type)); + +void fn(); +SA(__is_function(decltype(fn))); + +// Negative tests. +SA_TEST_CATEGORY(__is_function, int, false); +SA_TEST_CATEGORY(__is_function, int*, false); +SA_TEST_CATEGORY(__is_function, int&, false); +SA_TEST_CATEGORY(__is_function, void, false); +SA_TEST_CATEGORY(__is_function, void*, false); +SA_TEST_CATEGORY(__is_function, void**, false); +SA_TEST_CATEGORY(__is_function, std::nullptr_t, false); + +SA_TEST_CATEGORY(__is_function, AbstractClass, false); +SA(!__is_function(int(&)(int))); +SA(!__is_function(int(*)(int))); + +SA_TEST_CATEGORY(__is_function, A, false); +SA_TEST_CATEGORY(__is_function, decltype(&A::fn), false); + +struct FnCallOverload +{ void operator()(); }; +SA_TEST_CATEGORY(__is_function, FnCallOverload, false); + +// Sanity check. +SA_TEST_CATEGORY(__is_function, ClassType, false); +SA_TEST_CATEGORY(__is_function, IncompleteClass, false); +SA_TEST_CATEGORY(__is_function, IncompleteUnion, false); -- 2.41.0