//===----------------------------------------------------------------------===// // // 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++98, c++03, c++11, c++14 // <optional> // T shall be an object type other than cv in_place_t or cv nullopt_t // and shall satisfy the Cpp17Destructible requirements. // Note: array types do not satisfy the Cpp17Destructible requirements. #include <optional> #include <type_traits> #include <cassert> #include "test_macros.h" struct NonDestructible { ~NonDestructible() = delete; }; int main(int, char**) { { std::optional<char &> o1; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with a reference type is ill-formed"}} std::optional<NonDestructible> o2; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with a non-destructible type is ill-formed"}} std::optional<char[20]> o3; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with an array type is ill-formed"}} } { std::optional< std::in_place_t> o1; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with in_place_t is ill-formed"}} std::optional<const std::in_place_t> o2; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with in_place_t is ill-formed"}} std::optional< volatile std::in_place_t> o3; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with in_place_t is ill-formed"}} std::optional<const volatile std::in_place_t> o4; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with in_place_t is ill-formed"}} } { std::optional< std::nullopt_t> o1; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with nullopt_t is ill-formed"}} std::optional<const std::nullopt_t> o2; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with nullopt_t is ill-formed"}} std::optional< volatile std::nullopt_t> o3; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with nullopt_t is ill-formed"}} std::optional<const volatile std::nullopt_t> o4; // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with nullopt_t is ill-formed"}} } return 0; }