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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// type_traits
// is_base_of
#include <type_traits>
#include "test_macros.h"
template <class T, class U>
void test_is_base_of()
static_assert((std::is_base_of<T, U>::value), "");
static_assert((std::is_base_of<const T, U>::value), "");
static_assert((std::is_base_of<T, const U>::value), "");
static_assert((std::is_base_of<const T, const U>::value), "");
#if TEST_STD_VER > 14
static_assert((std::is_base_of_v<T, U>), "");
static_assert((std::is_base_of_v<const T, U>), "");
static_assert((std::is_base_of_v<T, const U>), "");
static_assert((std::is_base_of_v<const T, const U>), "");
template <class T, class U>
void test_is_not_base_of()
static_assert((!std::is_base_of<T, U>::value), "");
struct B {};
struct B1 : B {};
struct B2 : B {};
struct D : private B1, private B2 {};
struct I0; // incomplete
int main(int, char**)
test_is_base_of<B, D>();
test_is_base_of<B1, D>();
test_is_base_of<B2, D>();
test_is_base_of<B, B1>();
test_is_base_of<B, B2>();
test_is_base_of<B, B>();
test_is_not_base_of<D, B>();
test_is_not_base_of<B&, D&>();
test_is_not_base_of<B[3], D[3]>();
test_is_not_base_of<int, int>();
// A scalar is never the base class of anything (including incomplete types)
test_is_not_base_of<int, B>();
test_is_not_base_of<int, B1>();
test_is_not_base_of<int, B2>();
test_is_not_base_of<int, D>();
test_is_not_base_of<int, I0>();
// A scalar never has base classes (including incomplete types)
test_is_not_base_of<B, int>();
test_is_not_base_of<B1, int>();
test_is_not_base_of<B2, int>();
test_is_not_base_of<D, int>();
test_is_not_base_of<I0, int>();
return 0;