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 // void swap(unordered_set& c)
13 // noexcept(!allocator_type::propagate_on_container_swap::value ||
14 // __is_nothrow_swappable<allocator_type>::value);
15
16 // This tests a conforming extension
17
18 #include <unordered_set>
19 #include <cassert>
20
21 #include "../../../MoveOnly.h"
22 #include "test_allocator.h"
23
24 template <class T>
25 struct some_comp
26 {
27 typedef T value_type;
28
some_compsome_comp29 some_comp() {}
some_compsome_comp30 some_comp(const some_comp&) {}
31 };
32
33 template <class T>
34 struct some_hash
35 {
36 typedef T value_type;
some_hashsome_hash37 some_hash() {}
38 some_hash(const some_hash&);
39 };
40
main()41 int main()
42 {
43 #if __has_feature(cxx_noexcept)
44 {
45 typedef std::unordered_set<MoveOnly> C;
46 C c1, c2;
47 static_assert(noexcept(swap(c1, c2)), "");
48 }
49 {
50 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
51 std::equal_to<MoveOnly>, test_allocator<MoveOnly>> C;
52 C c1, c2;
53 static_assert(noexcept(swap(c1, c2)), "");
54 }
55 {
56 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
57 std::equal_to<MoveOnly>, other_allocator<MoveOnly>> C;
58 C c1, c2;
59 static_assert(noexcept(swap(c1, c2)), "");
60 }
61 {
62 typedef std::unordered_set<MoveOnly, some_hash<MoveOnly>> C;
63 C c1, c2;
64 static_assert(!noexcept(swap(c1, c2)), "");
65 }
66 {
67 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
68 some_comp<MoveOnly>> C;
69 C c1, c2;
70 static_assert(!noexcept(swap(c1, c2)), "");
71 }
72 #endif
73 }
74