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& operator=(deque&& c)
12 //     noexcept(
13 //          allocator_type::propagate_on_container_move_assignment::value &&
14 //          is_nothrow_move_assignable<allocator_type>::value);
15 
16 // This tests a conforming extension
17 
18 // UNSUPPORTED: c++03
19 
20 #include <deque>
21 #include <cassert>
22 
23 #include "test_macros.h"
24 #include "MoveOnly.h"
25 #include "test_allocator.h"
26 
27 template <class T>
28 struct some_alloc
29 {
30     typedef T value_type;
31     some_alloc(const some_alloc&);
32     void allocate(size_t);
33 };
34 
35 int main(int, char**)
36 {
37     {
38         typedef std::deque<MoveOnly> C;
39         static_assert(std::is_nothrow_move_assignable<C>::value, "");
40     }
41     {
42         typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
43         static_assert(!std::is_nothrow_move_assignable<C>::value, "");
44     }
45 #if defined(_LIBCPP_VERSION)
46     {
47         typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
48         static_assert(std::is_nothrow_move_assignable<C>::value, "");
49     }
50     {
51         typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
52         static_assert(!std::is_nothrow_move_assignable<C>::value, "");
53     }
54 #endif // _LIBCPP_VERSION
55 
56   return 0;
57 }
58