[libcxx-commits] [libcxx] 8f9cce0 - [libc++] Add container_traits (prework for `std::flat_map`) (#109578)
via libcxx-commits
libcxx-commits at lists.llvm.org
Sat Oct 12 10:30:03 PDT 2024
Author: Hui
Date: 2024-10-12T18:29:59+01:00
New Revision: 8f9cce0bef317076fbdce677d6d6744ebd5dc02a
URL: https://github.com/llvm/llvm-project/commit/8f9cce0bef317076fbdce677d6d6744ebd5dc02a
DIFF: https://github.com/llvm/llvm-project/commit/8f9cce0bef317076fbdce677d6d6744ebd5dc02a.diff
LOG: [libc++] Add container_traits (prework for `std::flat_map`) (#109578)
This PR is extracted from
https://github.com/llvm/llvm-project/pull/98643, as per code review
request
https://github.com/llvm/llvm-project/pull/98643#discussion_r1768967793
Added:
libcxx/include/__type_traits/container_traits.h
libcxx/test/libcxx/containers/container_traits.compile.pass.cpp
Modified:
libcxx/include/CMakeLists.txt
libcxx/include/deque
libcxx/include/forward_list
libcxx/include/list
libcxx/include/map
libcxx/include/module.modulemap
libcxx/include/set
libcxx/include/unordered_map
libcxx/include/unordered_set
libcxx/include/vector
Removed:
################################################################################
diff --git a/libcxx/include/CMakeLists.txt b/libcxx/include/CMakeLists.txt
index c2a597f49e317f..3431ea7dab386b 100644
--- a/libcxx/include/CMakeLists.txt
+++ b/libcxx/include/CMakeLists.txt
@@ -747,6 +747,7 @@ set(files
__type_traits/common_type.h
__type_traits/conditional.h
__type_traits/conjunction.h
+ __type_traits/container_traits.h
__type_traits/copy_cv.h
__type_traits/copy_cvref.h
__type_traits/datasizeof.h
diff --git a/libcxx/include/__type_traits/container_traits.h b/libcxx/include/__type_traits/container_traits.h
new file mode 100644
index 00000000000000..5262cef94c61ef
--- /dev/null
+++ b/libcxx/include/__type_traits/container_traits.h
@@ -0,0 +1,43 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___TYPE_TRAITS_CONTAINER_TRAITS_H
+#define _LIBCPP___TYPE_TRAITS_CONTAINER_TRAITS_H
+
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+# pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// // __container_traits is a general purpose utility containing traits describing various containers operations.
+// It currently only has one trait: `__emplacement_has_strong_exception_safety_guarantee`, but it's
+// intended to be extended in the future.
+//
+// These traits should only be used for optimization or QoI purposes. In particular, since this is a libc++ internal
+// mechanism, no user-defined containers should be expected to specialize these traits (in fact it would be illegal for
+// them to do so). Hence, when using these traits to implement something, make sure that a container that fails to
+// specialize these traits does not result in non-conforming code.
+//
+// When a trait is nonsensical for a type, this class still provides a fallback value for that trait.
+// For example, `std::array` does not support `insert` or `emplace`, so
+// `__emplacement_has_strong_exception_safety_guarantee` is false for such types.
+template <class _Container>
+struct __container_traits {
+ // A trait that tells whether a single element insertion/emplacement via member function
+ // `insert(...)` or `emplace(...)` has strong exception guarantee, that is, if the function
+ // exits via an exception, the original container is unaffected
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee = false;
+};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___TYPE_TRAITS_CONTAINER_TRAITS_H
diff --git a/libcxx/include/deque b/libcxx/include/deque
index fa67916ba11bca..11219d1a99244e 100644
--- a/libcxx/include/deque
+++ b/libcxx/include/deque
@@ -220,6 +220,8 @@ template <class T, class Allocator, class Predicate>
#include <__ranges/size.h>
#include <__split_buffer>
#include <__type_traits/conditional.h>
+#include <__type_traits/container_traits.h>
+#include <__type_traits/disjunction.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_convertible.h>
@@ -2609,6 +2611,17 @@ inline constexpr bool __format::__enable_insertable<std::deque<wchar_t>> = true;
#endif // _LIBCPP_STD_VER >= 20
+template <class _Tp, class _Allocator>
+struct __container_traits<deque<_Tp, _Allocator> > {
+ // http://eel.is/c++draft/deque.modifiers#3
+ // If an exception is thrown other than by the copy constructor, move constructor, assignment operator, or move
+ // assignment operator of T, there are no effects. If an exception is thrown while inserting a single element at
+ // either end, there are no effects. Otherwise, if an exception is thrown by the move constructor of a
+ // non-Cpp17CopyInsertable T, the effects are unspecified.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee =
+ _Or<is_nothrow_move_constructible<_Tp>, __is_cpp17_copy_insertable<_Allocator> >::value;
+};
+
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/forward_list b/libcxx/include/forward_list
index dd86888bf7a6e7..d3262fb8eaed1f 100644
--- a/libcxx/include/forward_list
+++ b/libcxx/include/forward_list
@@ -218,6 +218,7 @@ template <class T, class Allocator, class Predicate>
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
#include <__type_traits/conditional.h>
+#include <__type_traits/container_traits.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_const.h>
@@ -1544,6 +1545,17 @@ erase(forward_list<_Tp, _Allocator>& __c, const _Up& __v) {
}
#endif
+template <class _Tp, class _Allocator>
+struct __container_traits<forward_list<_Tp, _Allocator> > {
+ // http://eel.is/c++draft/container.reqmts
+ // Unless otherwise specified (see [associative.reqmts.except], [unord.req.except], [deque.modifiers],
+ // [inplace.vector.modifiers], and [vector.modifiers]) all container types defined in this Clause meet the following
+ // additional requirements:
+ // - If an exception is thrown by an insert() or emplace() function while inserting a single element, that
+ // function has no effects.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee = true;
+};
+
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/list b/libcxx/include/list
index ba21dbe3f74c08..4a169b08d8cddb 100644
--- a/libcxx/include/list
+++ b/libcxx/include/list
@@ -225,6 +225,7 @@ template <class T, class Allocator, class Predicate>
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
#include <__type_traits/conditional.h>
+#include <__type_traits/container_traits.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_nothrow_assignable.h>
@@ -1715,6 +1716,17 @@ inline constexpr bool __format::__enable_insertable<std::list<wchar_t>> = true;
#endif // _LIBCPP_STD_VER >= 20
+template <class _Tp, class _Allocator>
+struct __container_traits<list<_Tp, _Allocator> > {
+ // http://eel.is/c++draft/container.reqmts
+ // Unless otherwise specified (see [associative.reqmts.except], [unord.req.except], [deque.modifiers],
+ // [inplace.vector.modifiers], and [vector.modifiers]) all container types defined in this Clause meet the following
+ // additional requirements:
+ // - If an exception is thrown by an insert() or emplace() function while inserting a single element, that
+ // function has no effects.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee = true;
+};
+
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/map b/libcxx/include/map
index 7fca4c8a0872fd..fabf39512ab75f 100644
--- a/libcxx/include/map
+++ b/libcxx/include/map
@@ -594,6 +594,7 @@ erase_if(multimap<Key, T, Compare, Allocator>& c, Predicate pred); // C++20
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
#include <__tree>
+#include <__type_traits/container_traits.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/remove_const.h>
#include <__type_traits/type_identity.h>
@@ -1644,6 +1645,14 @@ erase_if(map<_Key, _Tp, _Compare, _Allocator>& __c, _Predicate __pred) {
}
#endif
+template <class _Key, class _Tp, class _Compare, class _Allocator>
+struct __container_traits<map<_Key, _Tp, _Compare, _Allocator> > {
+ // http://eel.is/c++draft/associative.reqmts.except#2
+ // For associative containers, if an exception is thrown by any operation from within
+ // an insert or emplace function inserting a single element, the insertion has no effect.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee = true;
+};
+
template <class _Key, class _Tp, class _Compare = less<_Key>, class _Allocator = allocator<pair<const _Key, _Tp> > >
class _LIBCPP_TEMPLATE_VIS multimap {
public:
@@ -2158,6 +2167,14 @@ erase_if(multimap<_Key, _Tp, _Compare, _Allocator>& __c, _Predicate __pred) {
}
#endif
+template <class _Key, class _Tp, class _Compare, class _Allocator>
+struct __container_traits<multimap<_Key, _Tp, _Compare, _Allocator> > {
+ // http://eel.is/c++draft/associative.reqmts.except#2
+ // For associative containers, if an exception is thrown by any operation from within
+ // an insert or emplace function inserting a single element, the insertion has no effect.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee = true;
+};
+
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/module.modulemap b/libcxx/include/module.modulemap
index 3ea91274a9cc9a..5a0e199394d018 100644
--- a/libcxx/include/module.modulemap
+++ b/libcxx/include/module.modulemap
@@ -79,6 +79,7 @@ module std_core [system] {
}
module conditional { header "__type_traits/conditional.h" }
module conjunction { header "__type_traits/conjunction.h" }
+ module container_traits { header "__type_traits/container_traits.h" }
module copy_cv { header "__type_traits/copy_cv.h" }
module copy_cvref { header "__type_traits/copy_cvref.h" }
module datasizeof { header "__type_traits/datasizeof.h" }
diff --git a/libcxx/include/set b/libcxx/include/set
index 0c2ca64139e0d3..5db0db8086dec6 100644
--- a/libcxx/include/set
+++ b/libcxx/include/set
@@ -531,6 +531,7 @@ erase_if(multiset<Key, Compare, Allocator>& c, Predicate pred); // C++20
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
#include <__tree>
+#include <__type_traits/container_traits.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_nothrow_assignable.h>
@@ -1022,6 +1023,14 @@ erase_if(set<_Key, _Compare, _Allocator>& __c, _Predicate __pred) {
}
#endif
+template <class _Key, class _Compare, class _Allocator>
+struct __container_traits<set<_Key, _Compare, _Allocator> > {
+ // http://eel.is/c++draft/associative.reqmts.except#2
+ // For associative containers, if an exception is thrown by any operation from within
+ // an insert or emplace function inserting a single element, the insertion has no effect.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee = true;
+};
+
template <class _Key, class _Compare = less<_Key>, class _Allocator = allocator<_Key> >
class _LIBCPP_TEMPLATE_VIS multiset {
public:
@@ -1481,6 +1490,14 @@ erase_if(multiset<_Key, _Compare, _Allocator>& __c, _Predicate __pred) {
}
#endif
+template <class _Key, class _Compare, class _Allocator>
+struct __container_traits<multiset<_Key, _Compare, _Allocator> > {
+ // http://eel.is/c++draft/associative.reqmts.except#2
+ // For associative containers, if an exception is thrown by any operation from within
+ // an insert or emplace function inserting a single element, the insertion has no effect.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee = true;
+};
+
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/unordered_map b/libcxx/include/unordered_map
index 0d71a51ee9e729..05aa01a3b7c308 100644
--- a/libcxx/include/unordered_map
+++ b/libcxx/include/unordered_map
@@ -604,7 +604,9 @@ template <class Key, class T, class Hash, class Pred, class Alloc>
#include <__ranges/concepts.h>
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
+#include <__type_traits/container_traits.h>
#include <__type_traits/enable_if.h>
+#include <__type_traits/invoke.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_integral.h>
#include <__type_traits/remove_const.h>
@@ -1830,6 +1832,16 @@ inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const unordered_map<_Key, _Tp, _Has
#endif
+template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
+struct __container_traits<unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc> > {
+ // http://eel.is/c++draft/unord.req.except#2
+ // For unordered associative containers, if an exception is thrown by any operation
+ // other than the container's hash function from within an insert or emplace function
+ // inserting a single element, the insertion has no effect.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee =
+ __nothrow_invokable<_Hash, const _Key&>::value;
+};
+
template <class _Key,
class _Tp,
class _Hash = hash<_Key>,
@@ -2520,6 +2532,16 @@ inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const unordered_multimap<_Key, _Tp,
#endif
+template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
+struct __container_traits<unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc> > {
+ // http://eel.is/c++draft/unord.req.except#2
+ // For unordered associative containers, if an exception is thrown by any operation
+ // other than the container's hash function from within an insert or emplace function
+ // inserting a single element, the insertion has no effect.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee =
+ __nothrow_invokable<_Hash, const _Key&>::value;
+};
+
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/unordered_set b/libcxx/include/unordered_set
index 2b09c72b866b03..7ab1c651b8c956 100644
--- a/libcxx/include/unordered_set
+++ b/libcxx/include/unordered_set
@@ -550,7 +550,9 @@ template <class Value, class Hash, class Pred, class Alloc>
#include <__ranges/concepts.h>
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
+#include <__type_traits/container_traits.h>
#include <__type_traits/enable_if.h>
+#include <__type_traits/invoke.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_integral.h>
#include <__type_traits/is_nothrow_assignable.h>
@@ -1183,6 +1185,16 @@ inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const unordered_set<_Value, _Hash,
#endif
+template <class _Value, class _Hash, class _Pred, class _Alloc>
+struct __container_traits<unordered_set<_Value, _Hash, _Pred, _Alloc> > {
+ // http://eel.is/c++draft/unord.req.except#2
+ // For unordered associative containers, if an exception is thrown by any operation
+ // other than the container's hash function from within an insert or emplace function
+ // inserting a single element, the insertion has no effect.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee =
+ __nothrow_invokable<_Hash, const _Value&>::value;
+};
+
template <class _Value, class _Hash = hash<_Value>, class _Pred = equal_to<_Value>, class _Alloc = allocator<_Value> >
class _LIBCPP_TEMPLATE_VIS unordered_multiset {
public:
@@ -1793,6 +1805,16 @@ inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const unordered_multiset<_Value, _H
#endif
+template <class _Value, class _Hash, class _Pred, class _Alloc>
+struct __container_traits<unordered_multiset<_Value, _Hash, _Pred, _Alloc> > {
+ // http://eel.is/c++draft/unord.req.except#2
+ // For unordered associative containers, if an exception is thrown by any operation
+ // other than the container's hash function from within an insert or emplace function
+ // inserting a single element, the insertion has no effect.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee =
+ __nothrow_invokable<_Hash, const _Value&>::value;
+};
+
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/include/vector b/libcxx/include/vector
index 76de0ab0a81a04..dc31f31838264c 100644
--- a/libcxx/include/vector
+++ b/libcxx/include/vector
@@ -356,6 +356,8 @@ template<class T, class charT> requires is-vector-bool-reference<T> // Since C++
#include <__ranges/size.h>
#include <__split_buffer>
#include <__type_traits/conditional.h>
+#include <__type_traits/container_traits.h>
+#include <__type_traits/disjunction.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_constructible.h>
@@ -3005,6 +3007,18 @@ public:
};
#endif // _LIBCPP_STD_VER >= 23
+template <class _Tp, class _Allocator>
+struct __container_traits<vector<_Tp, _Allocator> > {
+ // http://eel.is/c++draft/vector.modifiers#2
+ // If an exception is thrown other than by the copy constructor, move constructor, assignment operator, or move
+ // assignment operator of T or by any InputIterator operation, there are no effects. If an exception is thrown while
+ // inserting a single element at the end and T is Cpp17CopyInsertable or is_nothrow_move_constructible_v<T> is true,
+ // there are no effects. Otherwise, if an exception is thrown by the move constructor of a non-Cpp17CopyInsertable T,
+ // the effects are unspecified.
+ static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee =
+ _Or<is_nothrow_move_constructible<_Tp>, __is_cpp17_copy_insertable<_Allocator> >::value;
+};
+
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
diff --git a/libcxx/test/libcxx/containers/container_traits.compile.pass.cpp b/libcxx/test/libcxx/containers/container_traits.compile.pass.cpp
new file mode 100644
index 00000000000000..1452bfbaf3960e
--- /dev/null
+++ b/libcxx/test/libcxx/containers/container_traits.compile.pass.cpp
@@ -0,0 +1,163 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// <__type_traits/container_traits.h>
+//
+
+#include <__type_traits/container_traits.h>
+
+#include <deque>
+#include <forward_list>
+#include <list>
+#include <vector>
+#include <map>
+#include <set>
+#include <unordered_map>
+#include <unordered_set>
+
+#include "test_allocator.h"
+#include "test_macros.h"
+#include "MoveOnly.h"
+
+struct ThrowOnMove {
+ ThrowOnMove();
+ ThrowOnMove(const ThrowOnMove&) TEST_NOEXCEPT_COND(false);
+ ThrowOnMove(ThrowOnMove&&) TEST_NOEXCEPT_COND(false);
+ ThrowOnMove& operator=(ThrowOnMove&&) TEST_NOEXCEPT_COND(false);
+ ThrowOnMove& operator=(const ThrowOnMove&) TEST_NOEXCEPT_COND(false);
+
+ bool operator<(ThrowOnMove const&) const;
+ bool operator==(ThrowOnMove const&) const;
+};
+
+struct NonCopyThrowOnMove {
+ NonCopyThrowOnMove();
+ NonCopyThrowOnMove(NonCopyThrowOnMove&&) TEST_NOEXCEPT_COND(false);
+ NonCopyThrowOnMove(const NonCopyThrowOnMove&) = delete;
+ NonCopyThrowOnMove& operator=(NonCopyThrowOnMove&&) TEST_NOEXCEPT_COND(false);
+ NonCopyThrowOnMove& operator=(const NonCopyThrowOnMove&) = delete;
+
+ bool operator<(NonCopyThrowOnMove const&) const;
+ bool operator==(NonCopyThrowOnMove const&) const;
+};
+
+struct ThrowingHash {
+ template <class T>
+ std::size_t operator()(const T&) const TEST_NOEXCEPT_COND(false);
+};
+
+struct NoThrowHash {
+ template <class T>
+ std::size_t operator()(const T&) const TEST_NOEXCEPT;
+};
+
+template <bool Expected, class Container>
+void check() {
+ static_assert(
+ std::__container_traits<Container>::__emplacement_has_strong_exception_safety_guarantee == Expected, "");
+}
+
+void test() {
+ check<true, std::list<int> >();
+ check<true, std::list<int, test_allocator<int> > >();
+ check<true, std::list<MoveOnly> >();
+ check<true, std::list<ThrowOnMove> >();
+ check<true, std::list<NonCopyThrowOnMove> >();
+
+ check<true, std::forward_list<int> >();
+ check<true, std::forward_list<int, test_allocator<int> > >();
+ check<true, std::forward_list<MoveOnly> >();
+ check<true, std::forward_list<ThrowOnMove> >();
+ check<true, std::forward_list<NonCopyThrowOnMove> >();
+
+ check<true, std::deque<int> >();
+ check<true, std::deque<int, test_allocator<int> > >();
+ check<true, std::deque<MoveOnly> >();
+ check<true, std::deque<ThrowOnMove> >();
+ check<false, std::deque<NonCopyThrowOnMove> >();
+
+ check<true, std::vector<int> >();
+ check<true, std::vector<int, test_allocator<int> > >();
+ check<true, std::vector<MoveOnly> >();
+ check<true, std::vector<ThrowOnMove> >();
+ check<false, std::vector<NonCopyThrowOnMove> >();
+
+ check<true, std::set<int> >();
+ check<true, std::set<int, std::less<int>, test_allocator<int> > >();
+ check<true, std::set<MoveOnly> >();
+ check<true, std::set<ThrowOnMove> >();
+ check<true, std::set<NonCopyThrowOnMove> >();
+
+ check<true, std::multiset<int> >();
+ check<true, std::multiset<int, std::less<int>, test_allocator<int> > >();
+ check<true, std::multiset<MoveOnly> >();
+ check<true, std::multiset<ThrowOnMove> >();
+ check<true, std::multiset<NonCopyThrowOnMove> >();
+
+ check<true, std::map<int, int> >();
+ check<true, std::map<int, int, std::less<int>, test_allocator<int> > >();
+ check<true, std::map<MoveOnly, MoveOnly> >();
+ check<true, std::map<ThrowOnMove, ThrowOnMove> >();
+ check<true, std::map<NonCopyThrowOnMove, NonCopyThrowOnMove> >();
+
+ check<true, std::multimap<int, int> >();
+ check<true, std::multimap<int, int, std::less<int>, test_allocator<int> > >();
+ check<true, std::multimap<MoveOnly, MoveOnly> >();
+ check<true, std::multimap<ThrowOnMove, ThrowOnMove> >();
+ check<true, std::multimap<NonCopyThrowOnMove, NonCopyThrowOnMove> >();
+
+#if TEST_STD_VER < 11
+ check<false, std::unordered_set<int> >();
+ check<false, std::unordered_set<int, std::hash<int>, std::less<int>, test_allocator<int> > >();
+ check<false, std::unordered_set<MoveOnly> >();
+ check<false, std::unordered_set<MoveOnly, NoThrowHash> >();
+ check<false, std::unordered_set<MoveOnly, ThrowingHash> >();
+
+ check<false, std::unordered_multiset<int> >();
+ check<false, std::unordered_multiset<int, std::hash<int>, std::less<int>, test_allocator<int> > >();
+ check<false, std::unordered_multiset<MoveOnly> >();
+ check<false, std::unordered_multiset<MoveOnly, NoThrowHash> >();
+ check<false, std::unordered_multiset<MoveOnly, ThrowingHash> >();
+
+ check<false, std::unordered_map<int, int> >();
+ check<false, std::unordered_map<int, int, std::hash<int>, std::less<int>, test_allocator<int> > >();
+ check<false, std::unordered_map<MoveOnly, MoveOnly> >();
+ check<false, std::unordered_map<MoveOnly, MoveOnly, NoThrowHash> >();
+ check<false, std::unordered_map<MoveOnly, MoveOnly, ThrowingHash> >();
+
+ check<false, std::unordered_multimap<int, int> >();
+ check<false, std::unordered_multimap<int, int, std::hash<int>, std::less<int>, test_allocator<int> > >();
+ check<false, std::unordered_multimap<MoveOnly, MoveOnly> >();
+ check<false, std::unordered_multimap<MoveOnly, MoveOnly, NoThrowHash> >();
+ check<false, std::unordered_multimap<MoveOnly, MoveOnly, ThrowingHash> >();
+#else
+ check<true, std::unordered_set<int> >();
+ check<true, std::unordered_set<int, std::hash<int>, std::less<int>, test_allocator<int> > >();
+ check<false, std::unordered_set<MoveOnly> >();
+ check<true, std::unordered_set<MoveOnly, NoThrowHash> >();
+ check<false, std::unordered_set<MoveOnly, ThrowingHash> >();
+
+ check<true, std::unordered_multiset<int> >();
+ check<true, std::unordered_multiset<int, std::hash<int>, std::less<int>, test_allocator<int> > >();
+ check<false, std::unordered_multiset<MoveOnly> >();
+ check<true, std::unordered_multiset<MoveOnly, NoThrowHash> >();
+ check<false, std::unordered_multiset<MoveOnly, ThrowingHash> >();
+
+ check<true, std::unordered_map<int, int> >();
+ check<true, std::unordered_map<int, int, std::hash<int>, std::less<int>, test_allocator<int> > >();
+ check<false, std::unordered_map<MoveOnly, MoveOnly> >();
+ check<true, std::unordered_map<MoveOnly, MoveOnly, NoThrowHash> >();
+ check<false, std::unordered_map<MoveOnly, MoveOnly, ThrowingHash> >();
+
+ check<true, std::unordered_multimap<int, int> >();
+ check<true, std::unordered_multimap<int, int, std::hash<int>, std::less<int>, test_allocator<int> > >();
+ check<false, std::unordered_multimap<MoveOnly, MoveOnly> >();
+ check<true, std::unordered_multimap<MoveOnly, MoveOnly, NoThrowHash> >();
+ check<false, std::unordered_multimap<MoveOnly, MoveOnly, ThrowingHash> >();
+#endif
+}
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