633fe505fe
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@255513 91177308-0d34-0410-b5e6-96231b3b80d8
71 lines
2.2 KiB
C++
71 lines
2.2 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.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// type_traits
|
|
|
|
// add_lvalue_reference
|
|
|
|
#include <type_traits>
|
|
|
|
template <class T, class U>
|
|
void test_add_lvalue_reference()
|
|
{
|
|
static_assert((std::is_same<typename std::add_lvalue_reference<T>::type, U>::value), "");
|
|
#if _LIBCPP_STD_VER > 11
|
|
static_assert((std::is_same<std::add_lvalue_reference_t<T>, U>::value), "");
|
|
#endif
|
|
}
|
|
|
|
template <class F>
|
|
void test_function0()
|
|
{
|
|
static_assert((std::is_same<typename std::add_lvalue_reference<F>::type, F&>::value), "");
|
|
#if _LIBCPP_STD_VER > 11
|
|
static_assert((std::is_same<std::add_lvalue_reference_t<F>, F&>::value), "");
|
|
#endif
|
|
}
|
|
|
|
template <class F>
|
|
void test_function1()
|
|
{
|
|
static_assert((std::is_same<typename std::add_lvalue_reference<F>::type, F>::value), "");
|
|
#if _LIBCPP_STD_VER > 11
|
|
static_assert((std::is_same<std::add_lvalue_reference_t<F>, F>::value), "");
|
|
#endif
|
|
}
|
|
|
|
struct Foo {};
|
|
|
|
int main()
|
|
{
|
|
test_add_lvalue_reference<void, void>();
|
|
test_add_lvalue_reference<int, int&>();
|
|
test_add_lvalue_reference<int[3], int(&)[3]>();
|
|
test_add_lvalue_reference<int&, int&>();
|
|
test_add_lvalue_reference<const int&, const int&>();
|
|
test_add_lvalue_reference<int*, int*&>();
|
|
test_add_lvalue_reference<const int*, const int*&>();
|
|
|
|
// LWG 2101 specifically talks about add_lvalue_reference and functions.
|
|
// The term of art is "a referenceable type", which a cv- or ref-qualified function is not.
|
|
test_function0<void()>();
|
|
// test_function1<void() const>();
|
|
// test_function1<void() &>();
|
|
// test_function1<void() &&>();
|
|
// test_function1<void() const &>();
|
|
// test_function1<void() const &&>();
|
|
|
|
test_function0<void (Foo::*)()>();
|
|
// test_function1<void (Foo::*)() const>();
|
|
// test_function1<void (Foo::*)() &>();
|
|
// test_function1<void (Foo::*)() &&>();
|
|
// test_function1<void (Foo::*)() const &>();
|
|
// test_function1<void (Foo::*)() const &&>();
|
|
}
|