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_set()
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
main()43 int main()
44 {
45 #if __has_feature(cxx_noexcept)
46 {
47 typedef std::unordered_set<MoveOnly> C;
48 static_assert(std::is_nothrow_default_constructible<C>::value, "");
49 }
50 {
51 typedef std::unordered_set<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_set<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_set<MoveOnly, some_hash<MoveOnly>> C;
62 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
63 }
64 {
65 typedef std::unordered_set<MoveOnly, std::hash<MoveOnly>,
66 some_comp<MoveOnly>> C;
67 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
68 }
69 #endif
70 }
71