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 // <vector>
11
12 // vector& operator=(vector&& 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 <vector>
22 #include <cassert>
23
24 #include "test_macros.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 template <class T>
35 struct some_alloc2
36 {
37 typedef T value_type;
38
some_alloc2some_alloc239 some_alloc2() {}
40 some_alloc2(const some_alloc2&);
deallocatesome_alloc241 void deallocate(void*, unsigned) {}
42
43 typedef std::false_type propagate_on_container_move_assignment;
44 typedef std::true_type is_always_equal;
45 };
46
47 template <class T>
48 struct some_alloc3
49 {
50 typedef T value_type;
51
some_alloc3some_alloc352 some_alloc3() {}
53 some_alloc3(const some_alloc3&);
deallocatesome_alloc354 void deallocate(void*, unsigned) {}
55
56 typedef std::false_type propagate_on_container_move_assignment;
57 typedef std::false_type is_always_equal;
58 };
59
main()60 int main()
61 {
62 #if defined(_LIBCPP_VERSION)
63 {
64 typedef std::vector<bool> C;
65 static_assert(std::is_nothrow_move_assignable<C>::value, "");
66 }
67 #endif // _LIBCPP_VERSION
68 {
69 typedef std::vector<bool, test_allocator<bool>> C;
70 static_assert(!std::is_nothrow_move_assignable<C>::value, "");
71 }
72 #if defined(_LIBCPP_VERSION)
73 {
74 typedef std::vector<bool, other_allocator<bool>> C;
75 static_assert(std::is_nothrow_move_assignable<C>::value, "");
76 }
77 #endif // _LIBCPP_VERSION
78 {
79 #if TEST_STD_VER > 14
80 #if defined(_LIBCPP_VERSION)
81 typedef std::vector<bool, some_alloc<bool>> C;
82 static_assert( std::is_nothrow_move_assignable<C>::value, "");
83 #endif // _LIBCPP_VERSION
84 #else
85 typedef std::vector<bool, some_alloc<bool>> C;
86 static_assert(!std::is_nothrow_move_assignable<C>::value, "");
87 #endif
88 }
89 #if TEST_STD_VER > 14
90 #if defined(_LIBCPP_VERSION)
91 { // POCMA false, is_always_equal true
92 typedef std::vector<bool, some_alloc2<bool>> C;
93 static_assert( std::is_nothrow_move_assignable<C>::value, "");
94 }
95 #endif // _LIBCPP_VERSION
96 { // POCMA false, is_always_equal false
97 typedef std::vector<bool, some_alloc3<bool>> C;
98 static_assert(!std::is_nothrow_move_assignable<C>::value, "");
99 }
100 #endif
101 }
102