| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03 |
| |
| // <functional> |
| |
| // template<CopyConstructible Fn, CopyConstructible... Types> |
| // unspecified bind(Fn, Types...); // constexpr since C++20 |
| // template<Returnable R, CopyConstructible Fn, CopyConstructible... Types> |
| // unspecified bind(Fn, Types...); // constexpr since C++20 |
| |
| #include <functional> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| template <class R, class F> |
| TEST_CONSTEXPR_CXX20 |
| void test(F f, R expected) { |
| assert(f() == expected); |
| } |
| |
| template <class R, class F> |
| TEST_CONSTEXPR_CXX20 |
| void test_const(const F& f, R expected) { |
| assert(f() == expected); |
| } |
| |
| TEST_CONSTEXPR_CXX20 int f() {return 1;} |
| |
| struct A_int_0 { |
| TEST_CONSTEXPR_CXX20 int operator()() {return 4;} |
| TEST_CONSTEXPR_CXX20 int operator()() const {return 5;} |
| }; |
| |
| TEST_CONSTEXPR_CXX20 bool test_all() { |
| test(std::bind(f), 1); |
| test(std::bind(&f), 1); |
| test(std::bind(A_int_0()), 4); |
| test_const(std::bind(A_int_0()), 5); |
| |
| test(std::bind<int>(f), 1); |
| test(std::bind<int>(&f), 1); |
| test(std::bind<int>(A_int_0()), 4); |
| test_const(std::bind<int>(A_int_0()), 5); |
| return true; |
| } |
| |
| int main(int, char**) { |
| test_all(); |
| #if TEST_STD_VER >= 20 |
| static_assert(test_all()); |
| #endif |
| |
| return 0; |
| } |