1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// type_traits
10
11// add_cv
12
13#include <type_traits>
14
15#include "test_macros.h"
16
17template <class T, class U>
18void test_add_cv_imp()
19{
20 ASSERT_SAME_TYPE(const volatile U, typename std::add_cv<T>::type);
21#if TEST_STD_VER > 11
22 ASSERT_SAME_TYPE(const volatile U, std::add_cv_t<T>);
23#endif
24}
25
26template <class T>
27void test_add_cv()
28{
29 test_add_cv_imp<T, const volatile T>();
30 test_add_cv_imp<const T, const volatile T>();
31 test_add_cv_imp<volatile T, volatile const T>();
32 test_add_cv_imp<const volatile T, const volatile T>();
33}
34
35int main(int, char**)
36{
37 test_add_cv<void>();
38 test_add_cv<int>();
39 test_add_cv<int[3]>();
40 test_add_cv<int&>();
41 test_add_cv<const int&>();
42 test_add_cv<int*>();
43 test_add_cv<const int*>();
44
45 return 0;
46}
47

source code of libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_cv.pass.cpp