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()
13 //        noexcept(is_nothrow_default_constructible<allocator_type>::value);
14 
15 // This tests a conforming extension
16 
17 #include <deque>
18 #include <cassert>
19 
20 #include "MoveOnly.h"
21 #include "test_allocator.h"
22 
23 template <class T>
24 struct some_alloc
25 {
26     typedef T value_type;
27     some_alloc(const some_alloc&);
28 };
29 
main()30 int main()
31 {
32 #if __has_feature(cxx_noexcept)
33     {
34         typedef std::deque<MoveOnly> C;
35         static_assert(std::is_nothrow_default_constructible<C>::value, "");
36     }
37     {
38         typedef std::deque<MoveOnly, test_allocator<MoveOnly>> C;
39         static_assert(std::is_nothrow_default_constructible<C>::value, "");
40     }
41     {
42         typedef std::deque<MoveOnly, other_allocator<MoveOnly>> C;
43         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
44     }
45     {
46         typedef std::deque<MoveOnly, some_alloc<MoveOnly>> C;
47         static_assert(!std::is_nothrow_default_constructible<C>::value, "");
48     }
49 #endif
50 }
51