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 // <unordered_set>
11 
12 // unordered_multiset()
13 //    noexcept(
14 //        is_nothrow_default_constructible<allocator_type>::value &&
15 //        is_nothrow_default_constructible<key_compare>::value &&
16 //        is_nothrow_copy_constructible<key_compare>::value);
17 
18 // This tests a conforming extension
19 
20 #include <unordered_set>
21 #include <cassert>
22 
23 #include "../../../MoveOnly.h"
24 #include "../../../test_allocator.h"
25 #include "../../../test_hash.h"
26 
27 template <class T>
28 struct some_comp
29 {
30     typedef T value_type;
31     some_comp();
32     some_comp(const some_comp&);
33 };
34 
35 template <class T>
36 struct some_hash
37 {
38     typedef T value_type;
39     some_hash();
40     some_hash(const some_hash&);
41 };
42 
43 int main()
44 {
45 #if __has_feature(cxx_noexcept)
46     {
47         typedef std::unordered_multiset<MoveOnly> C;
48         static_assert(std::is_nothrow_default_constructible<C>::value, "");
49     }
50     {
51         typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
52                            std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
53         static_assert(std::is_nothrow_default_constructible<C>::value, "");
54     }
55     {
56         typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
57                           std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
58         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
59     }
60     {
61         typedef std::unordered_multiset<MoveOnly, some_hash<MoveOnly>> C;
62         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
63     }
64     {
65         typedef std::unordered_multiset<MoveOnly, std::hash<MoveOnly>,
66                                                          some_comp<MoveOnly>> C;
67         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
68     }
69 #endif
70 }
71