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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// test forward
#include <utility>
#include <cassert>
struct A
{
};
A source() {return A();}
const A csource() {return A();}
typedef char one;
struct two {one _[2];};
struct four {one _[4];};
struct eight {one _[8];};
one test(A&);
two test(const A&);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
four test(A&&);
eight test(const A&&);
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
int main()
{
A a;
const A ca = A();
((void)a); // Prevent unused warning
((void)ca); // Prevent unused warning
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
static_assert(sizeof(test(std::forward<A&>(a))) == 1, "");
static_assert(sizeof(test(std::forward<A>(a))) == 4, "");
static_assert(sizeof(test(std::forward<A>(source()))) == 4, "");
static_assert(sizeof(test(std::forward<const A&>(a))) == 2, "");
// static_assert(sizeof(test(std::forward<const A&>(source()))) == 2, "");
static_assert(sizeof(test(std::forward<const A>(a))) == 8, "");
static_assert(sizeof(test(std::forward<const A>(source()))) == 8, "");
static_assert(sizeof(test(std::forward<const A&>(ca))) == 2, "");
// static_assert(sizeof(test(std::forward<const A&>(csource()))) == 2, "");
static_assert(sizeof(test(std::forward<const A>(ca))) == 8, "");
static_assert(sizeof(test(std::forward<const A>(csource()))) == 8, "");
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
static_assert(sizeof(test(std::forward<A&>(a))) == 1, "");
static_assert(sizeof(test(std::forward<A>(a))) == 1, "");
// static_assert(sizeof(test(std::forward<A>(source()))) == 2, "");
static_assert(sizeof(test(std::forward<const A&>(a))) == 2, "");
static_assert(sizeof(test(std::forward<const A&>(source()))) == 2, "");
static_assert(sizeof(test(std::forward<const A>(a))) == 2, "");
static_assert(sizeof(test(std::forward<const A>(source()))) == 2, "");
static_assert(sizeof(test(std::forward<const A&>(ca))) == 2, "");
static_assert(sizeof(test(std::forward<const A&>(csource()))) == 2, "");
static_assert(sizeof(test(std::forward<const A>(ca))) == 2, "");
static_assert(sizeof(test(std::forward<const A>(csource()))) == 2, "");
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
#if _LIBCPP_STD_VER > 11
constexpr int i1 = std::move(23);
static_assert(i1 == 23, "" );
constexpr int i2 = std::forward<int>(42);
static_assert(i2 == 42, "" );
#endif
}
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