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// <map>
11
12// void swap(multimap& 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 <map>
19#include <cassert>
20
21#include "../../../MoveOnly.h"
22#include "test_allocator.h"
23
24template <class T>
25struct some_comp
26{
27    typedef T value_type;
28
29    some_comp() {}
30    some_comp(const some_comp&) {}
31    void deallocate(void*, unsigned) {}
32
33    typedef std::true_type propagate_on_container_swap;
34};
35
36int main()
37{
38#if __has_feature(cxx_noexcept)
39    {
40        typedef std::multimap<MoveOnly, MoveOnly> C;
41        C c1, c2;
42        static_assert(noexcept(swap(c1, c2)), "");
43    }
44    {
45        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
46        C c1, c2;
47        static_assert(noexcept(swap(c1, c2)), "");
48    }
49    {
50        typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
51        C c1, c2;
52        static_assert(noexcept(swap(c1, c2)), "");
53    }
54    {
55        typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
56        C c1, c2;
57        static_assert(!noexcept(swap(c1, c2)), "");
58    }
59#endif
60}
61