56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
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//===----------------------------------------------------------------------===//
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//
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <utility>
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// template <class T>
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// typename conditional
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// <
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// !has_nothrow_move_constructor<T>::value && has_copy_constructor<T>::value,
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// const T&,
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// T&&
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// >::type
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// move_if_noexcept(T& x);
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#include <utility>
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class A
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{
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A(const A&);
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A& operator=(const A&);
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public:
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A() {}
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#ifdef _LIBCPP_MOVE
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A(A&&) {}
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#endif
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};
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int main()
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{
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int i = 0;
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const int ci = 0;
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A a;
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const A ca;
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#ifdef _LIBCPP_MOVE
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static_assert((std::is_same<decltype(std::move_if_noexcept(i)), int&&>::value), "");
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static_assert((std::is_same<decltype(std::move_if_noexcept(ci)), const int&&>::value), "");
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static_assert((std::is_same<decltype(std::move_if_noexcept(a)), const A&>::value), "");
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static_assert((std::is_same<decltype(std::move_if_noexcept(ca)), const A&>::value), "");
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#else
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static_assert((std::is_same<decltype(std::move_if_noexcept(i)), const int>::value), "");
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static_assert((std::is_same<decltype(std::move_if_noexcept(ci)), const int>::value), "");
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static_assert((std::is_same<decltype(std::move_if_noexcept(a)), const A>::value), "");
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static_assert((std::is_same<decltype(std::move_if_noexcept(ca)), const A>::value), "");
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#endif
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}
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