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libcxx/test/std/utilities/meta/meta.trans/meta.trans.cv/add_const.pass.cpp

46 lines
1.1 KiB
C++

//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// type_traits
// add_const
#include <type_traits>
#include "test_macros.h"
template <class T, class U>
void test_add_const_imp()
{
static_assert((std::is_same<typename std::add_const<T>::type, const U>::value), "");
#if TEST_STD_VER > 11
static_assert((std::is_same<std::add_const_t<T>, U>::value), "");
#endif
}
template <class T>
void test_add_const()
{
test_add_const_imp<T, const T>();
test_add_const_imp<const T, const T>();
test_add_const_imp<volatile T, volatile const T>();
test_add_const_imp<const volatile T, const volatile T>();
}
int main()
{
test_add_const<void>();
test_add_const<int>();
test_add_const<int[3]>();
test_add_const<int&>();
test_add_const<const int&>();
test_add_const<int*>();
test_add_const<const int*>();
}