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 // UNSUPPORTED: c++98, c++03, c++11, c++14
11
12 // <type_traits>
13
14 // template <class T> struct is_aggregate;
15 // template <class T> constexpr bool is_aggregate_v = is_aggregate<T>::value;
16
17 #include <type_traits>
18 #include "test_macros.h"
19
20 template <class T>
test_true()21 void test_true()
22 {
23 #if !defined(_LIBCPP_HAS_NO_IS_AGGREGATE)
24 static_assert( std::is_aggregate<T>::value, "");
25 static_assert( std::is_aggregate<const T>::value, "");
26 static_assert( std::is_aggregate<volatile T>::value, "");
27 static_assert( std::is_aggregate<const volatile T>::value, "");
28 static_assert( std::is_aggregate_v<T>, "");
29 static_assert( std::is_aggregate_v<const T>, "");
30 static_assert( std::is_aggregate_v<volatile T>, "");
31 static_assert( std::is_aggregate_v<const volatile T>, "");
32 #endif
33 }
34
35 template <class T>
test_false()36 void test_false()
37 {
38 #if !defined(_LIBCPP_HAS_NO_IS_AGGREGATE)
39 static_assert(!std::is_aggregate<T>::value, "");
40 static_assert(!std::is_aggregate<const T>::value, "");
41 static_assert(!std::is_aggregate<volatile T>::value, "");
42 static_assert(!std::is_aggregate<const volatile T>::value, "");
43 static_assert(!std::is_aggregate_v<T>, "");
44 static_assert(!std::is_aggregate_v<const T>, "");
45 static_assert(!std::is_aggregate_v<volatile T>, "");
46 static_assert(!std::is_aggregate_v<const volatile T>, "");
47 #endif
48 }
49
50 struct Aggregate {};
51 struct HasCons { HasCons(int); };
52 struct HasPriv {
53 void PreventUnusedPrivateMemberWarning();
54 private:
55 int x;
56 };
57 struct Union { int x; void* y; };
58
59
main()60 int main ()
61 {
62 {
63 test_false<void>();
64 test_false<int>();
65 test_false<void*>();
66 test_false<void()>();
67 test_false<void() const>();
68 test_false<void(Aggregate::*)(int) const>();
69 test_false<Aggregate&>();
70 test_false<HasCons>();
71 test_false<HasPriv>();
72 }
73 {
74 test_true<Aggregate>();
75 test_true<Aggregate[]>();
76 test_true<Aggregate[42][101]>();
77 test_true<Union>();
78 }
79 }
80