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//===----------------------------------------------------------------------===//
//
// 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++03, c++11, c++14
#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;
}
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