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 // 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 // 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     {
40         typedef std::set<MoveOnly> C;
41         LIBCPP_STATIC_ASSERT(std::is_nothrow_default_constructible<C>::value, "");
42     }
43     {
44         typedef std::set<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
45         LIBCPP_STATIC_ASSERT(std::is_nothrow_default_constructible<C>::value, "");
46     }
47     {
48         typedef std::set<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
49         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
50     }
51     {
52         typedef std::set<MoveOnly, some_comp<MoveOnly>> C;
53         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
54     }
55 }
56