1 //===----------------------------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // UNSUPPORTED: c++98, c++03
15 // noexcept(!allocator_type::propagate_on_container_swap::value ||
16 // __is_nothrow_swappable<allocator_type>::value);
18 // In C++17, the standard says that swap shall have:
19 // noexcept(allocator_traits<Allocator>::is_always_equal::value &&
20 // noexcept(swap(declval<Compare&>(), declval<Compare&>())));
22 // This tests a conforming extension
28 #include "test_macros.h"
30 #include "test_allocator.h"
38 some_comp(const some_comp&) {}
39 bool operator()(const T&, const T&) const { return false; }
48 some_comp2(const some_comp2&) {}
49 bool operator()(const T&, const T&) const { return false; }
52 #if TEST_STD_VER >= 14
54 void swap(some_comp2<T>&, some_comp2<T>&) noexcept {}
63 some_alloc(const some_alloc&);
64 void deallocate(void*, unsigned) {}
66 typedef std::true_type propagate_on_container_swap;
75 some_alloc2(const some_alloc2&);
76 void deallocate(void*, unsigned) {}
78 typedef std::false_type propagate_on_container_swap;
79 typedef std::true_type is_always_equal;
88 some_alloc3(const some_alloc3&);
89 void deallocate(void*, unsigned) {}
91 typedef std::false_type propagate_on_container_swap;
92 typedef std::false_type is_always_equal;
97 typedef std::pair<const MoveOnly, MoveOnly> V;
99 typedef std::map<MoveOnly, MoveOnly> C;
100 static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
102 #if defined(_LIBCPP_VERSION)
104 typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
105 static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
108 typedef std::map<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
109 static_assert(noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
111 #endif // _LIBCPP_VERSION
113 typedef std::map<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
114 static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
117 #if TEST_STD_VER >= 14
118 { // POCS allocator, throwable swap for comp
119 typedef std::map<MoveOnly, MoveOnly, some_comp <MoveOnly>, some_alloc <V>> C;
120 static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
122 { // always equal allocator, throwable swap for comp
123 typedef std::map<MoveOnly, MoveOnly, some_comp <MoveOnly>, some_alloc2<V>> C;
124 static_assert(!noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
126 { // POCS allocator, nothrow swap for comp
127 typedef std::map<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc <V>> C;
128 static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
130 { // always equal allocator, nothrow swap for comp
131 typedef std::map<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc2<V>> C;
132 static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
134 #if defined(_LIBCPP_VERSION)
135 { // NOT always equal allocator, nothrow swap for comp
136 typedef std::map<MoveOnly, MoveOnly, some_comp2<MoveOnly>, some_alloc3<V>> C;
137 static_assert( noexcept(swap(std::declval<C&>(), std::declval<C&>())), "");
139 #endif // _LIBCPP_VERSION