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Vendor import of libc++ trunk r300422:
[FreeBSD/FreeBSD.git] / test / std / containers / associative / multiset / multiset.cons / default_noexcept.pass.cpp
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 // <set>
11
12 // 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 // UNSUPPORTED: c++98, c++03
21
22 #include <set>
23 #include <cassert>
24
25 #include "test_macros.h"
26 #include "MoveOnly.h"
27 #include "test_allocator.h"
28
29 template <class T>
30 struct some_comp
31 {
32     typedef T value_type;
33     some_comp();
34     bool operator()(const T&, const T&) const { return false; }
35 };
36
37 int main()
38 {
39 #if defined(_LIBCPP_VERSION)
40     {
41         typedef std::multiset<MoveOnly> C;
42         static_assert(std::is_nothrow_default_constructible<C>::value, "");
43     }
44     {
45         typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
46         static_assert(std::is_nothrow_default_constructible<C>::value, "");
47     }
48 #endif // _LIBCPP_VERSION
49     {
50         typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
51         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
52     }
53     {
54         typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;
55         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
56     }
57 }