1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <deque>
10 
11 // deque()
12 //        noexcept(is_nothrow_default_constructible<allocator_type>::value);
13 
14 // This tests a conforming extension
15 
16 // UNSUPPORTED: c++98, c++03
17 
18 #include <deque>
19 #include <cassert>
20 
21 #include "test_macros.h"
22 #include "MoveOnly.h"
23 #include "test_allocator.h"
24 
25 template <class T>
26 struct some_alloc
27 {
28     typedef T value_type;
29     some_alloc(const some_alloc&);
30 };
31 
32 int main(int, char**)
33 {
34 #if defined(_LIBCPP_VERSION)
35     {
36         typedef std::deque<MoveOnly> C;
37         static_assert(std::is_nothrow_default_constructible<C>::value, "");
38     }
39     {
40         typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
41         static_assert(std::is_nothrow_default_constructible<C>::value, "");
42     }
43 #endif // _LIBCPP_VERSION
44     {
45         typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
46         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
47     }
48     {
49         typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
50         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
51     }
52 
53   return 0;
54 }
55