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58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// type_traits
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// is_base_of
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#include <type_traits>
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#include "test_macros.h"
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template <class T, class U>
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void test_is_base_of()
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{
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static_assert((std::is_base_of<T, U>::value), "");
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static_assert((std::is_base_of<const T, U>::value), "");
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static_assert((std::is_base_of<T, const U>::value), "");
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static_assert((std::is_base_of<const T, const U>::value), "");
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#if TEST_STD_VER > 14
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static_assert((std::is_base_of_v<T, U>), "");
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static_assert((std::is_base_of_v<const T, U>), "");
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static_assert((std::is_base_of_v<T, const U>), "");
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static_assert((std::is_base_of_v<const T, const U>), "");
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#endif
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}
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template <class T, class U>
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void test_is_not_base_of()
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{
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static_assert((!std::is_base_of<T, U>::value), "");
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}
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struct B {};
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struct B1 : B {};
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struct B2 : B {};
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struct D : private B1, private B2 {};
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int main()
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{
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test_is_base_of<B, D>();
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test_is_base_of<B1, D>();
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test_is_base_of<B2, D>();
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test_is_base_of<B, B1>();
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test_is_base_of<B, B2>();
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test_is_base_of<B, B>();
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test_is_not_base_of<D, B>();
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test_is_not_base_of<B&, D&>();
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test_is_not_base_of<B[3], D[3]>();
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test_is_not_base_of<int, int>();
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}
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