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 #include <set>
21 #include <cassert>
22 
23 #include "MoveOnly.h"
24 #include "test_allocator.h"
25 
26 template <class T>
27 struct some_comp
28 {
29     typedef T value_type;
30     some_comp();
31 };
32 
main()33 int main()
34 {
35 #if __has_feature(cxx_noexcept)
36     {
37         typedef std::set<MoveOnly> C;
38         static_assert(std::is_nothrow_default_constructible<C>::value, "");
39     }
40     {
41         typedef std::set<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;
42         static_assert(std::is_nothrow_default_constructible<C>::value, "");
43     }
44     {
45         typedef std::set<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;
46         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
47     }
48     {
49         typedef std::set<MoveOnly, some_comp<MoveOnly>> C;
50         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
51     }
52 #endif
53 }
54