forked from OSchip/llvm-project
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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();
|
|
|
|
#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
|
|
}
|