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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
// is_same
#include <type_traits>
#include "test_macros.h"
template <class T, class U>
void test_is_same()
{
static_assert(( std::is_same<T, U>::value), "");
static_assert((!std::is_same<const T, U>::value), "");
static_assert((!std::is_same<T, const U>::value), "");
static_assert(( std::is_same<const T, const U>::value), "");
#if TEST_STD_VER > 14
static_assert(( std::is_same_v<T, U>), "");
static_assert((!std::is_same_v<const T, U>), "");
static_assert((!std::is_same_v<T, const U>), "");
static_assert(( std::is_same_v<const T, const U>), "");
#endif
}
template <class T, class U>
void test_is_same_ref()
{
static_assert((std::is_same<T, U>::value), "");
static_assert((std::is_same<const T, U>::value), "");
static_assert((std::is_same<T, const U>::value), "");
static_assert((std::is_same<const T, const U>::value), "");
#if TEST_STD_VER > 14
static_assert((std::is_same_v<T, U>), "");
static_assert((std::is_same_v<const T, U>), "");
static_assert((std::is_same_v<T, const U>), "");
static_assert((std::is_same_v<const T, const U>), "");
#endif
}
template <class T, class U>
void test_is_not_same()
{
static_assert((!std::is_same<T, U>::value), "");
}
template <class T>
struct OverloadTest
{
void fn(std::is_same<T, int>) { }
void fn(std::false_type) { }
void x() { fn(std::false_type()); }
};
class Class
{
public:
~Class();
};
int main(int, char**)
{
test_is_same<int, int>();
test_is_same<void, void>();
test_is_same<Class, Class>();
test_is_same<int*, int*>();
test_is_same_ref<int&, int&>();
test_is_not_same<int, void>();
test_is_not_same<void, Class>();
test_is_not_same<Class, int*>();
test_is_not_same<int*, int&>();
test_is_not_same<int&, int>();
OverloadTest<char> t;
(void)t;
return 0;
}
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