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(map& 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
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&) {}
deallocatesome_comp31 void deallocate(void*, unsigned) {}
32
33 typedef std::true_type propagate_on_container_swap;
34 };
35
main()36 int main()
37 {
38 #if __has_feature(cxx_noexcept)
39 {
40 typedef std::map<MoveOnly, MoveOnly> C;
41 C c1, c2;
42 static_assert(noexcept(swap(c1, c2)), "");
43 }
44 {
45 typedef std::map<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::map<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::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
56 C c1, c2;
57 static_assert(!noexcept(swap(c1, c2)), "");
58 }
59 #endif
60 }
61