71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
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//===----------------------------------------------------------------------===//
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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_default_constructible
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#include <type_traits>
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template <class T, bool Result>
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void test_is_default_constructible()
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{
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static_assert(std::is_default_constructible<T>::value == Result, "");
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static_assert(std::is_default_constructible<const T>::value == Result, "");
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static_assert(std::is_default_constructible<volatile T>::value == Result, "");
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static_assert(std::is_default_constructible<const volatile T>::value == Result, "");
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}
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class Empty
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{
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};
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class NotEmpty
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{
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public:
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virtual ~NotEmpty();
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};
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union Union {};
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struct bit_zero
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{
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int : 0;
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};
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class Abstract
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{
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public:
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virtual ~Abstract() = 0;
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};
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struct A
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{
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A();
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};
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int main()
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{
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test_is_default_constructible<void, false>();
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test_is_default_constructible<int&, false>();
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test_is_default_constructible<char[], false>();
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test_is_default_constructible<Abstract, false>();
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test_is_default_constructible<A, true>();
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test_is_default_constructible<Union, true>();
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test_is_default_constructible<Empty, true>();
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test_is_default_constructible<int, true>();
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test_is_default_constructible<double, true>();
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test_is_default_constructible<int*, true>();
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test_is_default_constructible<const int*, true>();
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test_is_default_constructible<char[3], true>();
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test_is_default_constructible<NotEmpty, true>();
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test_is_default_constructible<bit_zero, true>();
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}
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