1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // type_traits
11
12 // lvalue_ref
13
14 #include <type_traits>
15
16 #include "test_macros.h"
17
18 template <class T>
test_lvalue_ref()19 void test_lvalue_ref()
20 {
21 static_assert(!std::is_void<T>::value, "");
22 #if TEST_STD_VER > 11
23 static_assert(!std::is_null_pointer<T>::value, "");
24 #endif
25 static_assert(!std::is_integral<T>::value, "");
26 static_assert(!std::is_floating_point<T>::value, "");
27 static_assert(!std::is_array<T>::value, "");
28 static_assert(!std::is_pointer<T>::value, "");
29 static_assert( std::is_lvalue_reference<T>::value, "");
30 static_assert(!std::is_rvalue_reference<T>::value, "");
31 static_assert(!std::is_member_object_pointer<T>::value, "");
32 static_assert(!std::is_member_function_pointer<T>::value, "");
33 static_assert(!std::is_enum<T>::value, "");
34 static_assert(!std::is_union<T>::value, "");
35 static_assert(!std::is_class<T>::value, "");
36 static_assert(!std::is_function<T>::value, "");
37 }
38
39 struct incomplete_type;
40
main()41 int main()
42 {
43 test_lvalue_ref<int&>();
44 test_lvalue_ref<const int&>();
45
46 // LWG#2582
47 static_assert(!std::is_lvalue_reference<incomplete_type>::value, "");
48 }
49