31 lines
782 B
C++
31 lines
782 B
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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// <utility>
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// template <class T> typename add_rvalue_reference<T>::type declval() noexcept;
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#include <utility>
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#include <type_traits>
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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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};
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int main()
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{
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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static_assert((std::is_same<decltype(std::declval<A>()), A&&>::value), "");
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#else
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static_assert((std::is_same<decltype(std::declval<A>()), A>::value), "");
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#endif
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}
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