| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // type_traits |
| |
| // void_t |
| |
| // UNSUPPORTED: c++98, c++03, c++11, c++14 |
| |
| // XFAIL: gcc-5.1, gcc-5.2 |
| |
| #include <type_traits> |
| |
| #include "test_macros.h" |
| |
| template <class T> |
| void test1() |
| { |
| ASSERT_SAME_TYPE(void, std::void_t<T>); |
| ASSERT_SAME_TYPE(void, std::void_t<const T>); |
| ASSERT_SAME_TYPE(void, std::void_t<volatile T>); |
| ASSERT_SAME_TYPE(void, std::void_t<const volatile T>); |
| } |
| |
| template <class T, class U> |
| void test2() |
| { |
| ASSERT_SAME_TYPE(void, std::void_t<T, U>); |
| ASSERT_SAME_TYPE(void, std::void_t<const T, U>); |
| ASSERT_SAME_TYPE(void, std::void_t<volatile T, U>); |
| ASSERT_SAME_TYPE(void, std::void_t<const volatile T, U>); |
| |
| ASSERT_SAME_TYPE(void, std::void_t<U, T>); |
| ASSERT_SAME_TYPE(void, std::void_t<U, const T>); |
| ASSERT_SAME_TYPE(void, std::void_t<U, volatile T>); |
| ASSERT_SAME_TYPE(void, std::void_t<U, const volatile T>); |
| |
| ASSERT_SAME_TYPE(void, std::void_t<T, const U>); |
| ASSERT_SAME_TYPE(void, std::void_t<const T, const U>); |
| ASSERT_SAME_TYPE(void, std::void_t<volatile T, const U>); |
| ASSERT_SAME_TYPE(void, std::void_t<const volatile T, const U>); |
| } |
| |
| class Class |
| { |
| public: |
| ~Class(); |
| }; |
| |
| int main(int, char**) |
| { |
| ASSERT_SAME_TYPE(void, std::void_t<>); |
| |
| test1<void>(); |
| test1<int>(); |
| test1<double>(); |
| test1<int&>(); |
| test1<Class>(); |
| test1<Class[]>(); |
| test1<Class[5]>(); |
| |
| test2<void, int>(); |
| test2<double, int>(); |
| test2<int&, int>(); |
| test2<Class&, bool>(); |
| test2<void *, int&>(); |
| |
| ASSERT_SAME_TYPE(void, std::void_t<int, double const &, Class, volatile int[], void>); |
| |
| return 0; |
| } |