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 // <deque>
11 
12 // deque& operator=(deque&& c)
13 //     noexcept(
14 //          allocator_type::propagate_on_container_move_assignment::value &&
15 //          is_nothrow_move_assignable<allocator_type>::value);
16 
17 // This tests a conforming extension
18 
19 // UNSUPPORTED: c++98, c++03
20 
21 #include <deque>
22 #include <cassert>
23 
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 };
33 
34 int main()
35 {
36     {
37         typedef std::deque<MoveOnly> C;
38         static_assert(std::is_nothrow_move_assignable<C>::value, "");
39     }
40     {
41         typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
42         static_assert(!std::is_nothrow_move_assignable<C>::value, "");
43     }
44     {
45         typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
46         static_assert(std::is_nothrow_move_assignable<C>::value, "");
47     }
48     {
49         typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
50         static_assert(!std::is_nothrow_move_assignable<C>::value, "");
51     }
52 }
53