[libc++] Split std::shared_ptr & friends out of <memory>
Differential Revision: https://reviews.llvm.org/D100318
GitOrigin-RevId: 916fecb499c58a782a324c689ea5f516aa7ceb6b
diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
index b63e0eb..8b8b214 100644
--- a/include/CMakeLists.txt
+++ b/include/CMakeLists.txt
@@ -20,6 +20,7 @@
__memory/compressed_pair.h
__memory/pointer_traits.h
__memory/raw_storage_iterator.h
+ __memory/shared_ptr.h
__memory/temporary_buffer.h
__memory/uninitialized_algorithms.h
__memory/unique_ptr.h
diff --git a/include/__memory/shared_ptr.h b/include/__memory/shared_ptr.h
new file mode 100644
index 0000000..729ce16
--- /dev/null
+++ b/include/__memory/shared_ptr.h
@@ -0,0 +1,1838 @@
+// -*- 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___MEMORY_SHARED_PTR_H
+#define _LIBCPP___MEMORY_SHARED_PTR_H
+
+#include <__config>
+#include <__availability>
+#include <__functional_base> // std::less, std::binary_function
+#include <__memory/allocator.h>
+#include <__memory/allocator_traits.h>
+#include <__memory/auto_ptr.h>
+#include <__memory/base.h> // std::addressof
+#include <__memory/compressed_pair.h>
+#include <__memory/pointer_traits.h>
+#include <__memory/unique_ptr.h>
+#include <__memory/utilities.h> // __allocation_guard
+#include <cstddef>
+#include <cstdlib> // abort
+#include <iosfwd>
+#include <stdexcept>
+#include <type_traits>
+#include <utility>
+#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
+# include <atomic>
+#endif
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_PUSH_MACROS
+#include <__undef_macros>
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Alloc>
+class __allocator_destructor
+{
+ typedef _LIBCPP_NODEBUG_TYPE allocator_traits<_Alloc> __alloc_traits;
+public:
+ typedef _LIBCPP_NODEBUG_TYPE typename __alloc_traits::pointer pointer;
+ typedef _LIBCPP_NODEBUG_TYPE typename __alloc_traits::size_type size_type;
+private:
+ _Alloc& __alloc_;
+ size_type __s_;
+public:
+ _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s)
+ _NOEXCEPT
+ : __alloc_(__a), __s_(__s) {}
+ _LIBCPP_INLINE_VISIBILITY
+ void operator()(pointer __p) _NOEXCEPT
+ {__alloc_traits::deallocate(__alloc_, __p, __s_);}
+};
+
+// NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively)
+// should be sufficient for thread safety.
+// See https://llvm.org/PR22803
+#if defined(__clang__) && __has_builtin(__atomic_add_fetch) \
+ && defined(__ATOMIC_RELAXED) \
+ && defined(__ATOMIC_ACQ_REL)
+# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT
+#elif defined(_LIBCPP_COMPILER_GCC)
+# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT
+#endif
+
+template <class _ValueType>
+inline _LIBCPP_INLINE_VISIBILITY
+_ValueType __libcpp_relaxed_load(_ValueType const* __value) {
+#if !defined(_LIBCPP_HAS_NO_THREADS) && \
+ defined(__ATOMIC_RELAXED) && \
+ (__has_builtin(__atomic_load_n) || defined(_LIBCPP_COMPILER_GCC))
+ return __atomic_load_n(__value, __ATOMIC_RELAXED);
+#else
+ return *__value;
+#endif
+}
+
+template <class _ValueType>
+inline _LIBCPP_INLINE_VISIBILITY
+_ValueType __libcpp_acquire_load(_ValueType const* __value) {
+#if !defined(_LIBCPP_HAS_NO_THREADS) && \
+ defined(__ATOMIC_ACQUIRE) && \
+ (__has_builtin(__atomic_load_n) || defined(_LIBCPP_COMPILER_GCC))
+ return __atomic_load_n(__value, __ATOMIC_ACQUIRE);
+#else
+ return *__value;
+#endif
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY _Tp
+__libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT
+{
+#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS)
+ return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED);
+#else
+ return __t += 1;
+#endif
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY _Tp
+__libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT
+{
+#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS)
+ return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL);
+#else
+ return __t -= 1;
+#endif
+}
+
+class _LIBCPP_EXCEPTION_ABI bad_weak_ptr
+ : public std::exception
+{
+public:
+ bad_weak_ptr() _NOEXCEPT = default;
+ bad_weak_ptr(const bad_weak_ptr&) _NOEXCEPT = default;
+ virtual ~bad_weak_ptr() _NOEXCEPT;
+ virtual const char* what() const _NOEXCEPT;
+};
+
+_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
+void __throw_bad_weak_ptr()
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ throw bad_weak_ptr();
+#else
+ _VSTD::abort();
+#endif
+}
+
+template<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr;
+
+class _LIBCPP_TYPE_VIS __shared_count
+{
+ __shared_count(const __shared_count&);
+ __shared_count& operator=(const __shared_count&);
+
+protected:
+ long __shared_owners_;
+ virtual ~__shared_count();
+private:
+ virtual void __on_zero_shared() _NOEXCEPT = 0;
+
+public:
+ _LIBCPP_INLINE_VISIBILITY
+ explicit __shared_count(long __refs = 0) _NOEXCEPT
+ : __shared_owners_(__refs) {}
+
+#if defined(_LIBCPP_BUILDING_LIBRARY) && \
+ defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS)
+ void __add_shared() _NOEXCEPT;
+ bool __release_shared() _NOEXCEPT;
+#else
+ _LIBCPP_INLINE_VISIBILITY
+ void __add_shared() _NOEXCEPT {
+ __libcpp_atomic_refcount_increment(__shared_owners_);
+ }
+ _LIBCPP_INLINE_VISIBILITY
+ bool __release_shared() _NOEXCEPT {
+ if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) {
+ __on_zero_shared();
+ return true;
+ }
+ return false;
+ }
+#endif
+ _LIBCPP_INLINE_VISIBILITY
+ long use_count() const _NOEXCEPT {
+ return __libcpp_relaxed_load(&__shared_owners_) + 1;
+ }
+};
+
+class _LIBCPP_TYPE_VIS __shared_weak_count
+ : private __shared_count
+{
+ long __shared_weak_owners_;
+
+public:
+ _LIBCPP_INLINE_VISIBILITY
+ explicit __shared_weak_count(long __refs = 0) _NOEXCEPT
+ : __shared_count(__refs),
+ __shared_weak_owners_(__refs) {}
+protected:
+ virtual ~__shared_weak_count();
+
+public:
+#if defined(_LIBCPP_BUILDING_LIBRARY) && \
+ defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS)
+ void __add_shared() _NOEXCEPT;
+ void __add_weak() _NOEXCEPT;
+ void __release_shared() _NOEXCEPT;
+#else
+ _LIBCPP_INLINE_VISIBILITY
+ void __add_shared() _NOEXCEPT {
+ __shared_count::__add_shared();
+ }
+ _LIBCPP_INLINE_VISIBILITY
+ void __add_weak() _NOEXCEPT {
+ __libcpp_atomic_refcount_increment(__shared_weak_owners_);
+ }
+ _LIBCPP_INLINE_VISIBILITY
+ void __release_shared() _NOEXCEPT {
+ if (__shared_count::__release_shared())
+ __release_weak();
+ }
+#endif
+ void __release_weak() _NOEXCEPT;
+ _LIBCPP_INLINE_VISIBILITY
+ long use_count() const _NOEXCEPT {return __shared_count::use_count();}
+ __shared_weak_count* lock() _NOEXCEPT;
+
+ virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
+private:
+ virtual void __on_zero_shared_weak() _NOEXCEPT = 0;
+};
+
+template <class _Tp, class _Dp, class _Alloc>
+class __shared_ptr_pointer
+ : public __shared_weak_count
+{
+ __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_;
+public:
+ _LIBCPP_INLINE_VISIBILITY
+ __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a)
+ : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {}
+
+#ifndef _LIBCPP_NO_RTTI
+ virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
+#endif
+
+private:
+ virtual void __on_zero_shared() _NOEXCEPT;
+ virtual void __on_zero_shared_weak() _NOEXCEPT;
+};
+
+#ifndef _LIBCPP_NO_RTTI
+
+template <class _Tp, class _Dp, class _Alloc>
+const void*
+__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT
+{
+ return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : nullptr;
+}
+
+#endif // _LIBCPP_NO_RTTI
+
+template <class _Tp, class _Dp, class _Alloc>
+void
+__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT
+{
+ __data_.first().second()(__data_.first().first());
+ __data_.first().second().~_Dp();
+}
+
+template <class _Tp, class _Dp, class _Alloc>
+void
+__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT
+{
+ typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al;
+ typedef allocator_traits<_Al> _ATraits;
+ typedef pointer_traits<typename _ATraits::pointer> _PTraits;
+
+ _Al __a(__data_.second());
+ __data_.second().~_Alloc();
+ __a.deallocate(_PTraits::pointer_to(*this), 1);
+}
+
+template <class _Tp, class _Alloc>
+struct __shared_ptr_emplace
+ : __shared_weak_count
+{
+ template<class ..._Args>
+ _LIBCPP_HIDE_FROM_ABI
+ explicit __shared_ptr_emplace(_Alloc __a, _Args&& ...__args)
+ : __storage_(_VSTD::move(__a))
+ {
+#if _LIBCPP_STD_VER > 17
+ using _TpAlloc = typename __allocator_traits_rebind<_Alloc, _Tp>::type;
+ _TpAlloc __tmp(*__get_alloc());
+ allocator_traits<_TpAlloc>::construct(__tmp, __get_elem(), _VSTD::forward<_Args>(__args)...);
+#else
+ ::new ((void*)__get_elem()) _Tp(_VSTD::forward<_Args>(__args)...);
+#endif
+ }
+
+ _LIBCPP_HIDE_FROM_ABI
+ _Alloc* __get_alloc() _NOEXCEPT { return __storage_.__get_alloc(); }
+
+ _LIBCPP_HIDE_FROM_ABI
+ _Tp* __get_elem() _NOEXCEPT { return __storage_.__get_elem(); }
+
+private:
+ virtual void __on_zero_shared() _NOEXCEPT {
+#if _LIBCPP_STD_VER > 17
+ using _TpAlloc = typename __allocator_traits_rebind<_Alloc, _Tp>::type;
+ _TpAlloc __tmp(*__get_alloc());
+ allocator_traits<_TpAlloc>::destroy(__tmp, __get_elem());
+#else
+ __get_elem()->~_Tp();
+#endif
+ }
+
+ virtual void __on_zero_shared_weak() _NOEXCEPT {
+ using _ControlBlockAlloc = typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type;
+ using _ControlBlockPointer = typename allocator_traits<_ControlBlockAlloc>::pointer;
+ _ControlBlockAlloc __tmp(*__get_alloc());
+ __storage_.~_Storage();
+ allocator_traits<_ControlBlockAlloc>::deallocate(__tmp,
+ pointer_traits<_ControlBlockPointer>::pointer_to(*this), 1);
+ }
+
+ // This class implements the control block for non-array shared pointers created
+ // through `std::allocate_shared` and `std::make_shared`.
+ //
+ // In previous versions of the library, we used a compressed pair to store
+ // both the _Alloc and the _Tp. This implies using EBO, which is incompatible
+ // with Allocator construction for _Tp. To allow implementing P0674 in C++20,
+ // we now use a properly aligned char buffer while making sure that we maintain
+ // the same layout that we had when we used a compressed pair.
+ using _CompressedPair = __compressed_pair<_Alloc, _Tp>;
+ struct _ALIGNAS_TYPE(_CompressedPair) _Storage {
+ char __blob_[sizeof(_CompressedPair)];
+
+ _LIBCPP_HIDE_FROM_ABI explicit _Storage(_Alloc&& __a) {
+ ::new ((void*)__get_alloc()) _Alloc(_VSTD::move(__a));
+ }
+ _LIBCPP_HIDE_FROM_ABI ~_Storage() {
+ __get_alloc()->~_Alloc();
+ }
+ _Alloc* __get_alloc() _NOEXCEPT {
+ _CompressedPair *__as_pair = reinterpret_cast<_CompressedPair*>(__blob_);
+ typename _CompressedPair::_Base1* __first = _CompressedPair::__get_first_base(__as_pair);
+ _Alloc *__alloc = reinterpret_cast<_Alloc*>(__first);
+ return __alloc;
+ }
+ _LIBCPP_NO_CFI _Tp* __get_elem() _NOEXCEPT {
+ _CompressedPair *__as_pair = reinterpret_cast<_CompressedPair*>(__blob_);
+ typename _CompressedPair::_Base2* __second = _CompressedPair::__get_second_base(__as_pair);
+ _Tp *__elem = reinterpret_cast<_Tp*>(__second);
+ return __elem;
+ }
+ };
+
+ static_assert(_LIBCPP_ALIGNOF(_Storage) == _LIBCPP_ALIGNOF(_CompressedPair), "");
+ static_assert(sizeof(_Storage) == sizeof(_CompressedPair), "");
+ _Storage __storage_;
+};
+
+struct __shared_ptr_dummy_rebind_allocator_type;
+template <>
+class _LIBCPP_TEMPLATE_VIS allocator<__shared_ptr_dummy_rebind_allocator_type>
+{
+public:
+ template <class _Other>
+ struct rebind
+ {
+ typedef allocator<_Other> other;
+ };
+};
+
+template<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this;
+
+template<class _Tp, class _Up>
+struct __compatible_with
+#if _LIBCPP_STD_VER > 14
+ : is_convertible<remove_extent_t<_Tp>*, remove_extent_t<_Up>*> {};
+#else
+ : is_convertible<_Tp*, _Up*> {};
+#endif // _LIBCPP_STD_VER > 14
+
+template <class _Dp, class _Pt,
+ class = decltype(_VSTD::declval<_Dp>()(_VSTD::declval<_Pt>()))>
+static true_type __well_formed_deleter_test(int);
+
+template <class, class>
+static false_type __well_formed_deleter_test(...);
+
+template <class _Dp, class _Pt>
+struct __well_formed_deleter : decltype(__well_formed_deleter_test<_Dp, _Pt>(0)) {};
+
+template<class _Dp, class _Tp, class _Yp>
+struct __shared_ptr_deleter_ctor_reqs
+{
+ static const bool value = __compatible_with<_Tp, _Yp>::value &&
+ is_move_constructible<_Dp>::value &&
+ __well_formed_deleter<_Dp, _Tp*>::value;
+};
+
+#if defined(_LIBCPP_ABI_ENABLE_SHARED_PTR_TRIVIAL_ABI)
+# define _LIBCPP_SHARED_PTR_TRIVIAL_ABI __attribute__((trivial_abi))
+#else
+# define _LIBCPP_SHARED_PTR_TRIVIAL_ABI
+#endif
+
+template<class _Tp>
+class _LIBCPP_SHARED_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS shared_ptr
+{
+public:
+#if _LIBCPP_STD_VER > 14
+ typedef weak_ptr<_Tp> weak_type;
+ typedef remove_extent_t<_Tp> element_type;
+#else
+ typedef _Tp element_type;
+#endif
+
+private:
+ element_type* __ptr_;
+ __shared_weak_count* __cntrl_;
+
+ struct __nat {int __for_bool_;};
+public:
+ _LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT;
+ _LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT;
+ template<class _Yp>
+ explicit shared_ptr(_Yp* __p,
+ typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type = __nat());
+ template<class _Yp, class _Dp>
+ shared_ptr(_Yp* __p, _Dp __d,
+ typename enable_if<__shared_ptr_deleter_ctor_reqs<_Dp, _Yp, element_type>::value, __nat>::type = __nat());
+ template<class _Yp, class _Dp, class _Alloc>
+ shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
+ typename enable_if<__shared_ptr_deleter_ctor_reqs<_Dp, _Yp, element_type>::value, __nat>::type = __nat());
+ template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d);
+ template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a);
+ template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT;
+ _LIBCPP_INLINE_VISIBILITY
+ shared_ptr(const shared_ptr& __r) _NOEXCEPT;
+ template<class _Yp>
+ _LIBCPP_INLINE_VISIBILITY
+ shared_ptr(const shared_ptr<_Yp>& __r,
+ typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type = __nat())
+ _NOEXCEPT;
+ _LIBCPP_INLINE_VISIBILITY
+ shared_ptr(shared_ptr&& __r) _NOEXCEPT;
+ template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r,
+ typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type = __nat())
+ _NOEXCEPT;
+ template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r,
+ typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat());
+#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
+ template<class _Yp>
+ shared_ptr(auto_ptr<_Yp>&& __r,
+ typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
+#endif
+ template <class _Yp, class _Dp>
+ shared_ptr(unique_ptr<_Yp, _Dp>&&,
+ typename enable_if
+ <
+ !is_lvalue_reference<_Dp>::value &&
+ is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
+ __nat
+ >::type = __nat());
+ template <class _Yp, class _Dp>
+ shared_ptr(unique_ptr<_Yp, _Dp>&&,
+ typename enable_if
+ <
+ is_lvalue_reference<_Dp>::value &&
+ is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
+ __nat
+ >::type = __nat());
+
+ ~shared_ptr();
+
+ _LIBCPP_INLINE_VISIBILITY
+ shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT;
+ template<class _Yp>
+ typename enable_if
+ <
+ __compatible_with<_Yp, element_type>::value,
+ shared_ptr&
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT;
+ _LIBCPP_INLINE_VISIBILITY
+ shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT;
+ template<class _Yp>
+ typename enable_if
+ <
+ __compatible_with<_Yp, element_type>::value,
+ shared_ptr&
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ operator=(shared_ptr<_Yp>&& __r);
+#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
+ template<class _Yp>
+ _LIBCPP_INLINE_VISIBILITY
+ typename enable_if
+ <
+ !is_array<_Yp>::value &&
+ is_convertible<_Yp*, element_type*>::value,
+ shared_ptr
+ >::type&
+ operator=(auto_ptr<_Yp>&& __r);
+#endif
+ template <class _Yp, class _Dp>
+ typename enable_if
+ <
+ is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
+ shared_ptr&
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ operator=(unique_ptr<_Yp, _Dp>&& __r);
+
+ _LIBCPP_INLINE_VISIBILITY
+ void swap(shared_ptr& __r) _NOEXCEPT;
+ _LIBCPP_INLINE_VISIBILITY
+ void reset() _NOEXCEPT;
+ template<class _Yp>
+ typename enable_if
+ <
+ __compatible_with<_Yp, element_type>::value,
+ void
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ reset(_Yp* __p);
+ template<class _Yp, class _Dp>
+ typename enable_if
+ <
+ __compatible_with<_Yp, element_type>::value,
+ void
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ reset(_Yp* __p, _Dp __d);
+ template<class _Yp, class _Dp, class _Alloc>
+ typename enable_if
+ <
+ __compatible_with<_Yp, element_type>::value,
+ void
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ reset(_Yp* __p, _Dp __d, _Alloc __a);
+
+ _LIBCPP_INLINE_VISIBILITY
+ element_type* get() const _NOEXCEPT {return __ptr_;}
+ _LIBCPP_INLINE_VISIBILITY
+ typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT
+ {return *__ptr_;}
+ _LIBCPP_INLINE_VISIBILITY
+ element_type* operator->() const _NOEXCEPT
+ {
+ static_assert(!_VSTD::is_array<_Tp>::value,
+ "std::shared_ptr<T>::operator-> is only valid when T is not an array type.");
+ return __ptr_;
+ }
+ _LIBCPP_INLINE_VISIBILITY
+ long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;}
+ _LIBCPP_INLINE_VISIBILITY
+ bool unique() const _NOEXCEPT {return use_count() == 1;}
+ _LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != nullptr;}
+ template <class _Up>
+ _LIBCPP_INLINE_VISIBILITY
+ bool owner_before(shared_ptr<_Up> const& __p) const _NOEXCEPT
+ {return __cntrl_ < __p.__cntrl_;}
+ template <class _Up>
+ _LIBCPP_INLINE_VISIBILITY
+ bool owner_before(weak_ptr<_Up> const& __p) const _NOEXCEPT
+ {return __cntrl_ < __p.__cntrl_;}
+ _LIBCPP_INLINE_VISIBILITY
+ bool
+ __owner_equivalent(const shared_ptr& __p) const
+ {return __cntrl_ == __p.__cntrl_;}
+
+#if _LIBCPP_STD_VER > 14
+ typename add_lvalue_reference<element_type>::type
+ _LIBCPP_INLINE_VISIBILITY
+ operator[](ptrdiff_t __i) const
+ {
+ static_assert(_VSTD::is_array<_Tp>::value,
+ "std::shared_ptr<T>::operator[] is only valid when T is an array type.");
+ return __ptr_[__i];
+ }
+#endif
+
+#ifndef _LIBCPP_NO_RTTI
+ template <class _Dp>
+ _LIBCPP_INLINE_VISIBILITY
+ _Dp* __get_deleter() const _NOEXCEPT
+ {return static_cast<_Dp*>(__cntrl_
+ ? const_cast<void *>(__cntrl_->__get_deleter(typeid(_Dp)))
+ : nullptr);}
+#endif // _LIBCPP_NO_RTTI
+
+ template<class _Yp, class _CntrlBlk>
+ static shared_ptr<_Tp>
+ __create_with_control_block(_Yp* __p, _CntrlBlk* __cntrl) _NOEXCEPT
+ {
+ shared_ptr<_Tp> __r;
+ __r.__ptr_ = __p;
+ __r.__cntrl_ = __cntrl;
+ __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
+ return __r;
+ }
+
+private:
+ template <class _Yp, bool = is_function<_Yp>::value>
+ struct __shared_ptr_default_allocator
+ {
+ typedef allocator<_Yp> type;
+ };
+
+ template <class _Yp>
+ struct __shared_ptr_default_allocator<_Yp, true>
+ {
+ typedef allocator<__shared_ptr_dummy_rebind_allocator_type> type;
+ };
+
+ template <class _Yp, class _OrigPtr>
+ _LIBCPP_INLINE_VISIBILITY
+ typename enable_if<is_convertible<_OrigPtr*,
+ const enable_shared_from_this<_Yp>*
+ >::value,
+ void>::type
+ __enable_weak_this(const enable_shared_from_this<_Yp>* __e,
+ _OrigPtr* __ptr) _NOEXCEPT
+ {
+ typedef typename remove_cv<_Yp>::type _RawYp;
+ if (__e && __e->__weak_this_.expired())
+ {
+ __e->__weak_this_ = shared_ptr<_RawYp>(*this,
+ const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr)));
+ }
+ }
+
+ _LIBCPP_INLINE_VISIBILITY void __enable_weak_this(...) _NOEXCEPT {}
+
+ template <class, class _Yp>
+ struct __shared_ptr_default_delete
+ : default_delete<_Yp> {};
+
+ template <class _Yp, class _Un, size_t _Sz>
+ struct __shared_ptr_default_delete<_Yp[_Sz], _Un>
+ : default_delete<_Yp[]> {};
+
+ template <class _Yp, class _Un>
+ struct __shared_ptr_default_delete<_Yp[], _Un>
+ : default_delete<_Yp[]> {};
+
+ template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr;
+ template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr;
+};
+
+#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES
+template<class _Tp>
+shared_ptr(weak_ptr<_Tp>) -> shared_ptr<_Tp>;
+template<class _Tp, class _Dp>
+shared_ptr(unique_ptr<_Tp, _Dp>) -> shared_ptr<_Tp>;
+#endif
+
+template<class _Tp>
+inline
+_LIBCPP_CONSTEXPR
+shared_ptr<_Tp>::shared_ptr() _NOEXCEPT
+ : __ptr_(nullptr),
+ __cntrl_(nullptr)
+{
+}
+
+template<class _Tp>
+inline
+_LIBCPP_CONSTEXPR
+shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT
+ : __ptr_(nullptr),
+ __cntrl_(nullptr)
+{
+}
+
+template<class _Tp>
+template<class _Yp>
+shared_ptr<_Tp>::shared_ptr(_Yp* __p,
+ typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type)
+ : __ptr_(__p)
+{
+ unique_ptr<_Yp> __hold(__p);
+ typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
+ typedef __shared_ptr_pointer<_Yp*, __shared_ptr_default_delete<_Tp, _Yp>, _AllocT > _CntrlBlk;
+ __cntrl_ = new _CntrlBlk(__p, __shared_ptr_default_delete<_Tp, _Yp>(), _AllocT());
+ __hold.release();
+ __enable_weak_this(__p, __p);
+}
+
+template<class _Tp>
+template<class _Yp, class _Dp>
+shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d,
+ typename enable_if<__shared_ptr_deleter_ctor_reqs<_Dp, _Yp, element_type>::value, __nat>::type)
+ : __ptr_(__p)
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ try
+ {
+#endif // _LIBCPP_NO_EXCEPTIONS
+ typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
+ typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk;
+#ifndef _LIBCPP_CXX03_LANG
+ __cntrl_ = new _CntrlBlk(__p, _VSTD::move(__d), _AllocT());
+#else
+ __cntrl_ = new _CntrlBlk(__p, __d, _AllocT());
+#endif // not _LIBCPP_CXX03_LANG
+ __enable_weak_this(__p, __p);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ }
+ catch (...)
+ {
+ __d(__p);
+ throw;
+ }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+template<class _Tp>
+template<class _Dp>
+shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d)
+ : __ptr_(nullptr)
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ try
+ {
+#endif // _LIBCPP_NO_EXCEPTIONS
+ typedef typename __shared_ptr_default_allocator<_Tp>::type _AllocT;
+ typedef __shared_ptr_pointer<nullptr_t, _Dp, _AllocT > _CntrlBlk;
+#ifndef _LIBCPP_CXX03_LANG
+ __cntrl_ = new _CntrlBlk(__p, _VSTD::move(__d), _AllocT());
+#else
+ __cntrl_ = new _CntrlBlk(__p, __d, _AllocT());
+#endif // not _LIBCPP_CXX03_LANG
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ }
+ catch (...)
+ {
+ __d(__p);
+ throw;
+ }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+template<class _Tp>
+template<class _Yp, class _Dp, class _Alloc>
+shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
+ typename enable_if<__shared_ptr_deleter_ctor_reqs<_Dp, _Yp, element_type>::value, __nat>::type)
+ : __ptr_(__p)
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ try
+ {
+#endif // _LIBCPP_NO_EXCEPTIONS
+ typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk;
+ typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
+ typedef __allocator_destructor<_A2> _D2;
+ _A2 __a2(__a);
+ unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
+ ::new ((void*)_VSTD::addressof(*__hold2.get()))
+#ifndef _LIBCPP_CXX03_LANG
+ _CntrlBlk(__p, _VSTD::move(__d), __a);
+#else
+ _CntrlBlk(__p, __d, __a);
+#endif // not _LIBCPP_CXX03_LANG
+ __cntrl_ = _VSTD::addressof(*__hold2.release());
+ __enable_weak_this(__p, __p);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ }
+ catch (...)
+ {
+ __d(__p);
+ throw;
+ }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+template<class _Tp>
+template<class _Dp, class _Alloc>
+shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a)
+ : __ptr_(nullptr)
+{
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ try
+ {
+#endif // _LIBCPP_NO_EXCEPTIONS
+ typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk;
+ typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
+ typedef __allocator_destructor<_A2> _D2;
+ _A2 __a2(__a);
+ unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
+ ::new ((void*)_VSTD::addressof(*__hold2.get()))
+#ifndef _LIBCPP_CXX03_LANG
+ _CntrlBlk(__p, _VSTD::move(__d), __a);
+#else
+ _CntrlBlk(__p, __d, __a);
+#endif // not _LIBCPP_CXX03_LANG
+ __cntrl_ = _VSTD::addressof(*__hold2.release());
+#ifndef _LIBCPP_NO_EXCEPTIONS
+ }
+ catch (...)
+ {
+ __d(__p);
+ throw;
+ }
+#endif // _LIBCPP_NO_EXCEPTIONS
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT
+ : __ptr_(__p),
+ __cntrl_(__r.__cntrl_)
+{
+ if (__cntrl_)
+ __cntrl_->__add_shared();
+}
+
+template<class _Tp>
+inline
+shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ if (__cntrl_)
+ __cntrl_->__add_shared();
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r,
+ typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type)
+ _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ if (__cntrl_)
+ __cntrl_->__add_shared();
+}
+
+template<class _Tp>
+inline
+shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ __r.__ptr_ = nullptr;
+ __r.__cntrl_ = nullptr;
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r,
+ typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type)
+ _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ __r.__ptr_ = nullptr;
+ __r.__cntrl_ = nullptr;
+}
+
+#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
+template<class _Tp>
+template<class _Yp>
+shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r,
+ typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
+ : __ptr_(__r.get())
+{
+ typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk;
+ __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>());
+ __enable_weak_this(__r.get(), __r.get());
+ __r.release();
+}
+#endif
+
+template<class _Tp>
+template <class _Yp, class _Dp>
+shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
+ typename enable_if
+ <
+ !is_lvalue_reference<_Dp>::value &&
+ is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
+ __nat
+ >::type)
+ : __ptr_(__r.get())
+{
+#if _LIBCPP_STD_VER > 11
+ if (__ptr_ == nullptr)
+ __cntrl_ = nullptr;
+ else
+#endif
+ {
+ typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
+ typedef __shared_ptr_pointer<typename unique_ptr<_Yp, _Dp>::pointer, _Dp, _AllocT > _CntrlBlk;
+ __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), _AllocT());
+ __enable_weak_this(__r.get(), __r.get());
+ }
+ __r.release();
+}
+
+template<class _Tp>
+template <class _Yp, class _Dp>
+shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
+ typename enable_if
+ <
+ is_lvalue_reference<_Dp>::value &&
+ is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
+ __nat
+ >::type)
+ : __ptr_(__r.get())
+{
+#if _LIBCPP_STD_VER > 11
+ if (__ptr_ == nullptr)
+ __cntrl_ = nullptr;
+ else
+#endif
+ {
+ typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
+ typedef __shared_ptr_pointer<typename unique_ptr<_Yp, _Dp>::pointer,
+ reference_wrapper<typename remove_reference<_Dp>::type>,
+ _AllocT > _CntrlBlk;
+ __cntrl_ = new _CntrlBlk(__r.get(), _VSTD::ref(__r.get_deleter()), _AllocT());
+ __enable_weak_this(__r.get(), __r.get());
+ }
+ __r.release();
+}
+
+template<class _Tp>
+shared_ptr<_Tp>::~shared_ptr()
+{
+ if (__cntrl_)
+ __cntrl_->__release_shared();
+}
+
+template<class _Tp>
+inline
+shared_ptr<_Tp>&
+shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT
+{
+ shared_ptr(__r).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+typename enable_if
+<
+ __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
+ shared_ptr<_Tp>&
+>::type
+shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT
+{
+ shared_ptr(__r).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+inline
+shared_ptr<_Tp>&
+shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT
+{
+ shared_ptr(_VSTD::move(__r)).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+typename enable_if
+<
+ __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
+ shared_ptr<_Tp>&
+>::type
+shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r)
+{
+ shared_ptr(_VSTD::move(__r)).swap(*this);
+ return *this;
+}
+
+#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
+template<class _Tp>
+template<class _Yp>
+inline
+typename enable_if
+<
+ !is_array<_Yp>::value &&
+ is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
+ shared_ptr<_Tp>
+>::type&
+shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r)
+{
+ shared_ptr(_VSTD::move(__r)).swap(*this);
+ return *this;
+}
+#endif
+
+template<class _Tp>
+template <class _Yp, class _Dp>
+inline
+typename enable_if
+<
+ is_convertible<typename unique_ptr<_Yp, _Dp>::pointer,
+ typename shared_ptr<_Tp>::element_type*>::value,
+ shared_ptr<_Tp>&
+>::type
+shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r)
+{
+ shared_ptr(_VSTD::move(__r)).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+inline
+void
+shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT
+{
+ _VSTD::swap(__ptr_, __r.__ptr_);
+ _VSTD::swap(__cntrl_, __r.__cntrl_);
+}
+
+template<class _Tp>
+inline
+void
+shared_ptr<_Tp>::reset() _NOEXCEPT
+{
+ shared_ptr().swap(*this);
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+typename enable_if
+<
+ __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
+ void
+>::type
+shared_ptr<_Tp>::reset(_Yp* __p)
+{
+ shared_ptr(__p).swap(*this);
+}
+
+template<class _Tp>
+template<class _Yp, class _Dp>
+inline
+typename enable_if
+<
+ __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
+ void
+>::type
+shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d)
+{
+ shared_ptr(__p, __d).swap(*this);
+}
+
+template<class _Tp>
+template<class _Yp, class _Dp, class _Alloc>
+inline
+typename enable_if
+<
+ __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
+ void
+>::type
+shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a)
+{
+ shared_ptr(__p, __d, __a).swap(*this);
+}
+
+//
+// std::allocate_shared and std::make_shared
+//
+template<class _Tp, class _Alloc, class ..._Args, class = _EnableIf<!is_array<_Tp>::value> >
+_LIBCPP_HIDE_FROM_ABI
+shared_ptr<_Tp> allocate_shared(const _Alloc& __a, _Args&& ...__args)
+{
+ using _ControlBlock = __shared_ptr_emplace<_Tp, _Alloc>;
+ using _ControlBlockAllocator = typename __allocator_traits_rebind<_Alloc, _ControlBlock>::type;
+ __allocation_guard<_ControlBlockAllocator> __guard(__a, 1);
+ ::new ((void*)_VSTD::addressof(*__guard.__get())) _ControlBlock(__a, _VSTD::forward<_Args>(__args)...);
+ auto __control_block = __guard.__release_ptr();
+ return shared_ptr<_Tp>::__create_with_control_block((*__control_block).__get_elem(), _VSTD::addressof(*__control_block));
+}
+
+template<class _Tp, class ..._Args, class = _EnableIf<!is_array<_Tp>::value> >
+_LIBCPP_HIDE_FROM_ABI
+shared_ptr<_Tp> make_shared(_Args&& ...__args)
+{
+ return _VSTD::allocate_shared<_Tp>(allocator<_Tp>(), _VSTD::forward<_Args>(__args)...);
+}
+
+template<class _Tp, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
+{
+ return __x.get() == __y.get();
+}
+
+template<class _Tp, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
+{
+ return !(__x == __y);
+}
+
+template<class _Tp, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
+{
+#if _LIBCPP_STD_VER <= 11
+ typedef typename common_type<_Tp*, _Up*>::type _Vp;
+ return less<_Vp>()(__x.get(), __y.get());
+#else
+ return less<>()(__x.get(), __y.get());
+#endif
+
+}
+
+template<class _Tp, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
+{
+ return __y < __x;
+}
+
+template<class _Tp, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
+{
+ return !(__y < __x);
+}
+
+template<class _Tp, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
+{
+ return !(__x < __y);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
+{
+ return !__x;
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
+{
+ return !__x;
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
+{
+ return static_cast<bool>(__x);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
+{
+ return static_cast<bool>(__x);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
+{
+ return less<_Tp*>()(__x.get(), nullptr);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
+{
+ return less<_Tp*>()(nullptr, __x.get());
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
+{
+ return nullptr < __x;
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
+{
+ return __x < nullptr;
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
+{
+ return !(nullptr < __x);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
+{
+ return !(__x < nullptr);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
+{
+ return !(__x < nullptr);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
+{
+ return !(nullptr < __x);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+void
+swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT
+{
+ __x.swap(__y);
+}
+
+template<class _Tp, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+shared_ptr<_Tp>
+static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
+{
+ return shared_ptr<_Tp>(__r,
+ static_cast<
+ typename shared_ptr<_Tp>::element_type*>(__r.get()));
+}
+
+template<class _Tp, class _Up>
+inline _LIBCPP_INLINE_VISIBILITY
+shared_ptr<_Tp>
+dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
+{
+ typedef typename shared_ptr<_Tp>::element_type _ET;
+ _ET* __p = dynamic_cast<_ET*>(__r.get());
+ return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>();
+}
+
+template<class _Tp, class _Up>
+shared_ptr<_Tp>
+const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
+{
+ typedef typename shared_ptr<_Tp>::element_type _RTp;
+ return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get()));
+}
+
+template<class _Tp, class _Up>
+shared_ptr<_Tp>
+reinterpret_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
+{
+ return shared_ptr<_Tp>(__r,
+ reinterpret_cast<
+ typename shared_ptr<_Tp>::element_type*>(__r.get()));
+}
+
+#ifndef _LIBCPP_NO_RTTI
+
+template<class _Dp, class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_Dp*
+get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT
+{
+ return __p.template __get_deleter<_Dp>();
+}
+
+#endif // _LIBCPP_NO_RTTI
+
+template<class _Tp>
+class _LIBCPP_SHARED_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS weak_ptr
+{
+public:
+ typedef _Tp element_type;
+private:
+ element_type* __ptr_;
+ __shared_weak_count* __cntrl_;
+
+public:
+ _LIBCPP_INLINE_VISIBILITY
+ _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT;
+ template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r,
+ typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
+ _NOEXCEPT;
+ _LIBCPP_INLINE_VISIBILITY
+ weak_ptr(weak_ptr const& __r) _NOEXCEPT;
+ template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r,
+ typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
+ _NOEXCEPT;
+
+ _LIBCPP_INLINE_VISIBILITY
+ weak_ptr(weak_ptr&& __r) _NOEXCEPT;
+ template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r,
+ typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
+ _NOEXCEPT;
+ ~weak_ptr();
+
+ _LIBCPP_INLINE_VISIBILITY
+ weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT;
+ template<class _Yp>
+ typename enable_if
+ <
+ is_convertible<_Yp*, element_type*>::value,
+ weak_ptr&
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT;
+
+ _LIBCPP_INLINE_VISIBILITY
+ weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT;
+ template<class _Yp>
+ typename enable_if
+ <
+ is_convertible<_Yp*, element_type*>::value,
+ weak_ptr&
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT;
+
+ template<class _Yp>
+ typename enable_if
+ <
+ is_convertible<_Yp*, element_type*>::value,
+ weak_ptr&
+ >::type
+ _LIBCPP_INLINE_VISIBILITY
+ operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT;
+
+ _LIBCPP_INLINE_VISIBILITY
+ void swap(weak_ptr& __r) _NOEXCEPT;
+ _LIBCPP_INLINE_VISIBILITY
+ void reset() _NOEXCEPT;
+
+ _LIBCPP_INLINE_VISIBILITY
+ long use_count() const _NOEXCEPT
+ {return __cntrl_ ? __cntrl_->use_count() : 0;}
+ _LIBCPP_INLINE_VISIBILITY
+ bool expired() const _NOEXCEPT
+ {return __cntrl_ == nullptr || __cntrl_->use_count() == 0;}
+ shared_ptr<_Tp> lock() const _NOEXCEPT;
+ template<class _Up>
+ _LIBCPP_INLINE_VISIBILITY
+ bool owner_before(const shared_ptr<_Up>& __r) const _NOEXCEPT
+ {return __cntrl_ < __r.__cntrl_;}
+ template<class _Up>
+ _LIBCPP_INLINE_VISIBILITY
+ bool owner_before(const weak_ptr<_Up>& __r) const _NOEXCEPT
+ {return __cntrl_ < __r.__cntrl_;}
+
+ template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr;
+ template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr;
+};
+
+#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES
+template<class _Tp>
+weak_ptr(shared_ptr<_Tp>) -> weak_ptr<_Tp>;
+#endif
+
+template<class _Tp>
+inline
+_LIBCPP_CONSTEXPR
+weak_ptr<_Tp>::weak_ptr() _NOEXCEPT
+ : __ptr_(nullptr),
+ __cntrl_(nullptr)
+{
+}
+
+template<class _Tp>
+inline
+weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ if (__cntrl_)
+ __cntrl_->__add_weak();
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r,
+ typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
+ _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ if (__cntrl_)
+ __cntrl_->__add_weak();
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r,
+ typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
+ _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ if (__cntrl_)
+ __cntrl_->__add_weak();
+}
+
+template<class _Tp>
+inline
+weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ __r.__ptr_ = nullptr;
+ __r.__cntrl_ = nullptr;
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r,
+ typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
+ _NOEXCEPT
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_)
+{
+ __r.__ptr_ = nullptr;
+ __r.__cntrl_ = nullptr;
+}
+
+template<class _Tp>
+weak_ptr<_Tp>::~weak_ptr()
+{
+ if (__cntrl_)
+ __cntrl_->__release_weak();
+}
+
+template<class _Tp>
+inline
+weak_ptr<_Tp>&
+weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT
+{
+ weak_ptr(__r).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+typename enable_if
+<
+ is_convertible<_Yp*, _Tp*>::value,
+ weak_ptr<_Tp>&
+>::type
+weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT
+{
+ weak_ptr(__r).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+inline
+weak_ptr<_Tp>&
+weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT
+{
+ weak_ptr(_VSTD::move(__r)).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+typename enable_if
+<
+ is_convertible<_Yp*, _Tp*>::value,
+ weak_ptr<_Tp>&
+>::type
+weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT
+{
+ weak_ptr(_VSTD::move(__r)).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+template<class _Yp>
+inline
+typename enable_if
+<
+ is_convertible<_Yp*, _Tp*>::value,
+ weak_ptr<_Tp>&
+>::type
+weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT
+{
+ weak_ptr(__r).swap(*this);
+ return *this;
+}
+
+template<class _Tp>
+inline
+void
+weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT
+{
+ _VSTD::swap(__ptr_, __r.__ptr_);
+ _VSTD::swap(__cntrl_, __r.__cntrl_);
+}
+
+template<class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+void
+swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT
+{
+ __x.swap(__y);
+}
+
+template<class _Tp>
+inline
+void
+weak_ptr<_Tp>::reset() _NOEXCEPT
+{
+ weak_ptr().swap(*this);
+}
+
+template<class _Tp>
+template<class _Yp>
+shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r,
+ typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
+ : __ptr_(__r.__ptr_),
+ __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_)
+{
+ if (__cntrl_ == nullptr)
+ __throw_bad_weak_ptr();
+}
+
+template<class _Tp>
+shared_ptr<_Tp>
+weak_ptr<_Tp>::lock() const _NOEXCEPT
+{
+ shared_ptr<_Tp> __r;
+ __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_;
+ if (__r.__cntrl_)
+ __r.__ptr_ = __ptr_;
+ return __r;
+}
+
+#if _LIBCPP_STD_VER > 14
+template <class _Tp = void> struct owner_less;
+#else
+template <class _Tp> struct owner_less;
+#endif
+
+template <class _Tp>
+struct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> >
+ : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool>
+{
+ typedef bool result_type;
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+};
+
+template <class _Tp>
+struct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> >
+ : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool>
+{
+ typedef bool result_type;
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+};
+
+#if _LIBCPP_STD_VER > 14
+template <>
+struct _LIBCPP_TEMPLATE_VIS owner_less<void>
+{
+ template <class _Tp, class _Up>
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+ template <class _Tp, class _Up>
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+ template <class _Tp, class _Up>
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+ template <class _Tp, class _Up>
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT
+ {return __x.owner_before(__y);}
+ typedef void is_transparent;
+};
+#endif
+
+template<class _Tp>
+class _LIBCPP_TEMPLATE_VIS enable_shared_from_this
+{
+ mutable weak_ptr<_Tp> __weak_this_;
+protected:
+ _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
+ enable_shared_from_this() _NOEXCEPT {}
+ _LIBCPP_INLINE_VISIBILITY
+ enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {}
+ _LIBCPP_INLINE_VISIBILITY
+ enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT
+ {return *this;}
+ _LIBCPP_INLINE_VISIBILITY
+ ~enable_shared_from_this() {}
+public:
+ _LIBCPP_INLINE_VISIBILITY
+ shared_ptr<_Tp> shared_from_this()
+ {return shared_ptr<_Tp>(__weak_this_);}
+ _LIBCPP_INLINE_VISIBILITY
+ shared_ptr<_Tp const> shared_from_this() const
+ {return shared_ptr<const _Tp>(__weak_this_);}
+
+#if _LIBCPP_STD_VER > 14
+ _LIBCPP_INLINE_VISIBILITY
+ weak_ptr<_Tp> weak_from_this() _NOEXCEPT
+ { return __weak_this_; }
+
+ _LIBCPP_INLINE_VISIBILITY
+ weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT
+ { return __weak_this_; }
+#endif // _LIBCPP_STD_VER > 14
+
+ template <class _Up> friend class shared_ptr;
+};
+
+template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash;
+
+template <class _Tp>
+struct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> >
+{
+ typedef shared_ptr<_Tp> argument_type;
+ typedef size_t result_type;
+
+ _LIBCPP_INLINE_VISIBILITY
+ result_type operator()(const argument_type& __ptr) const _NOEXCEPT
+ {
+ return hash<typename shared_ptr<_Tp>::element_type*>()(__ptr.get());
+ }
+};
+
+template<class _CharT, class _Traits, class _Yp>
+inline _LIBCPP_INLINE_VISIBILITY
+basic_ostream<_CharT, _Traits>&
+operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p);
+
+
+#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
+
+class _LIBCPP_TYPE_VIS __sp_mut
+{
+ void* __lx;
+public:
+ void lock() _NOEXCEPT;
+ void unlock() _NOEXCEPT;
+
+private:
+ _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT;
+ __sp_mut(const __sp_mut&);
+ __sp_mut& operator=(const __sp_mut&);
+
+ friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*);
+};
+
+_LIBCPP_FUNC_VIS _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+__sp_mut& __get_sp_mut(const void*);
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+bool
+atomic_is_lock_free(const shared_ptr<_Tp>*)
+{
+ return false;
+}
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+shared_ptr<_Tp>
+atomic_load(const shared_ptr<_Tp>* __p)
+{
+ __sp_mut& __m = __get_sp_mut(__p);
+ __m.lock();
+ shared_ptr<_Tp> __q = *__p;
+ __m.unlock();
+ return __q;
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+shared_ptr<_Tp>
+atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order)
+{
+ return atomic_load(__p);
+}
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+void
+atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
+{
+ __sp_mut& __m = __get_sp_mut(__p);
+ __m.lock();
+ __p->swap(__r);
+ __m.unlock();
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+void
+atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
+{
+ atomic_store(__p, __r);
+}
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+shared_ptr<_Tp>
+atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
+{
+ __sp_mut& __m = __get_sp_mut(__p);
+ __m.lock();
+ __p->swap(__r);
+ __m.unlock();
+ return __r;
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+shared_ptr<_Tp>
+atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
+{
+ return atomic_exchange(__p, __r);
+}
+
+template <class _Tp>
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+bool
+atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
+{
+ shared_ptr<_Tp> __temp;
+ __sp_mut& __m = __get_sp_mut(__p);
+ __m.lock();
+ if (__p->__owner_equivalent(*__v))
+ {
+ _VSTD::swap(__temp, *__p);
+ *__p = __w;
+ __m.unlock();
+ return true;
+ }
+ _VSTD::swap(__temp, *__v);
+ *__v = *__p;
+ __m.unlock();
+ return false;
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+bool
+atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
+{
+ return atomic_compare_exchange_strong(__p, __v, __w);
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+bool
+atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
+ shared_ptr<_Tp> __w, memory_order, memory_order)
+{
+ return atomic_compare_exchange_strong(__p, __v, __w);
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
+bool
+atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
+ shared_ptr<_Tp> __w, memory_order, memory_order)
+{
+ return atomic_compare_exchange_weak(__p, __v, __w);
+}
+
+#endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
+
+_LIBCPP_END_NAMESPACE_STD
+
+_LIBCPP_POP_MACROS
+
+#endif // _LIBCPP___MEMORY_SHARED_PTR_H
diff --git a/include/memory b/include/memory
index 8ce8517..f2af033 100644
--- a/include/memory
+++ b/include/memory
@@ -665,7 +665,6 @@
*/
#include <__config>
-#include <__availability>
#include <type_traits>
#include <typeinfo>
#include <compare>
@@ -686,13 +685,11 @@
#include <__memory/compressed_pair.h>
#include <__memory/pointer_traits.h>
#include <__memory/raw_storage_iterator.h>
+#include <__memory/shared_ptr.h>
#include <__memory/temporary_buffer.h>
#include <__memory/uninitialized_algorithms.h>
#include <__memory/unique_ptr.h>
#include <__memory/utilities.h>
-#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
-# include <atomic>
-#endif
#include <version>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
@@ -705,30 +702,6 @@
_LIBCPP_BEGIN_NAMESPACE_STD
-template <class _ValueType>
-inline _LIBCPP_INLINE_VISIBILITY
-_ValueType __libcpp_relaxed_load(_ValueType const* __value) {
-#if !defined(_LIBCPP_HAS_NO_THREADS) && \
- defined(__ATOMIC_RELAXED) && \
- (__has_builtin(__atomic_load_n) || defined(_LIBCPP_COMPILER_GCC))
- return __atomic_load_n(__value, __ATOMIC_RELAXED);
-#else
- return *__value;
-#endif
-}
-
-template <class _ValueType>
-inline _LIBCPP_INLINE_VISIBILITY
-_ValueType __libcpp_acquire_load(_ValueType const* __value) {
-#if !defined(_LIBCPP_HAS_NO_THREADS) && \
- defined(__ATOMIC_ACQUIRE) && \
- (__has_builtin(__atomic_load_n) || defined(_LIBCPP_COMPILER_GCC))
- return __atomic_load_n(__value, __ATOMIC_ACQUIRE);
-#else
- return *__value;
-#endif
-}
-
template <class _Alloc, class _Ptr>
_LIBCPP_INLINE_VISIBILITY
void __construct_forward_with_exception_guarantees(_Alloc& __a, _Ptr __begin1, _Ptr __end1, _Ptr& __begin2) {
@@ -855,1771 +828,6 @@
{__process(__p, integral_constant<bool, is_trivially_destructible<_Tp>::value>());}
};
-template <class _Alloc>
-class __allocator_destructor
-{
- typedef _LIBCPP_NODEBUG_TYPE allocator_traits<_Alloc> __alloc_traits;
-public:
- typedef _LIBCPP_NODEBUG_TYPE typename __alloc_traits::pointer pointer;
- typedef _LIBCPP_NODEBUG_TYPE typename __alloc_traits::size_type size_type;
-private:
- _Alloc& __alloc_;
- size_type __s_;
-public:
- _LIBCPP_INLINE_VISIBILITY __allocator_destructor(_Alloc& __a, size_type __s)
- _NOEXCEPT
- : __alloc_(__a), __s_(__s) {}
- _LIBCPP_INLINE_VISIBILITY
- void operator()(pointer __p) _NOEXCEPT
- {__alloc_traits::deallocate(__alloc_, __p, __s_);}
-};
-
-// NOTE: Relaxed and acq/rel atomics (for increment and decrement respectively)
-// should be sufficient for thread safety.
-// See https://llvm.org/PR22803
-#if defined(__clang__) && __has_builtin(__atomic_add_fetch) \
- && defined(__ATOMIC_RELAXED) \
- && defined(__ATOMIC_ACQ_REL)
-# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT
-#elif defined(_LIBCPP_COMPILER_GCC)
-# define _LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT
-#endif
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY _Tp
-__libcpp_atomic_refcount_increment(_Tp& __t) _NOEXCEPT
-{
-#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS)
- return __atomic_add_fetch(&__t, 1, __ATOMIC_RELAXED);
-#else
- return __t += 1;
-#endif
-}
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY _Tp
-__libcpp_atomic_refcount_decrement(_Tp& __t) _NOEXCEPT
-{
-#if defined(_LIBCPP_HAS_BUILTIN_ATOMIC_SUPPORT) && !defined(_LIBCPP_HAS_NO_THREADS)
- return __atomic_add_fetch(&__t, -1, __ATOMIC_ACQ_REL);
-#else
- return __t -= 1;
-#endif
-}
-
-class _LIBCPP_EXCEPTION_ABI bad_weak_ptr
- : public std::exception
-{
-public:
- bad_weak_ptr() _NOEXCEPT = default;
- bad_weak_ptr(const bad_weak_ptr&) _NOEXCEPT = default;
- virtual ~bad_weak_ptr() _NOEXCEPT;
- virtual const char* what() const _NOEXCEPT;
-};
-
-_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
-void __throw_bad_weak_ptr()
-{
-#ifndef _LIBCPP_NO_EXCEPTIONS
- throw bad_weak_ptr();
-#else
- _VSTD::abort();
-#endif
-}
-
-template<class _Tp> class _LIBCPP_TEMPLATE_VIS weak_ptr;
-
-class _LIBCPP_TYPE_VIS __shared_count
-{
- __shared_count(const __shared_count&);
- __shared_count& operator=(const __shared_count&);
-
-protected:
- long __shared_owners_;
- virtual ~__shared_count();
-private:
- virtual void __on_zero_shared() _NOEXCEPT = 0;
-
-public:
- _LIBCPP_INLINE_VISIBILITY
- explicit __shared_count(long __refs = 0) _NOEXCEPT
- : __shared_owners_(__refs) {}
-
-#if defined(_LIBCPP_BUILDING_LIBRARY) && \
- defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS)
- void __add_shared() _NOEXCEPT;
- bool __release_shared() _NOEXCEPT;
-#else
- _LIBCPP_INLINE_VISIBILITY
- void __add_shared() _NOEXCEPT {
- __libcpp_atomic_refcount_increment(__shared_owners_);
- }
- _LIBCPP_INLINE_VISIBILITY
- bool __release_shared() _NOEXCEPT {
- if (__libcpp_atomic_refcount_decrement(__shared_owners_) == -1) {
- __on_zero_shared();
- return true;
- }
- return false;
- }
-#endif
- _LIBCPP_INLINE_VISIBILITY
- long use_count() const _NOEXCEPT {
- return __libcpp_relaxed_load(&__shared_owners_) + 1;
- }
-};
-
-class _LIBCPP_TYPE_VIS __shared_weak_count
- : private __shared_count
-{
- long __shared_weak_owners_;
-
-public:
- _LIBCPP_INLINE_VISIBILITY
- explicit __shared_weak_count(long __refs = 0) _NOEXCEPT
- : __shared_count(__refs),
- __shared_weak_owners_(__refs) {}
-protected:
- virtual ~__shared_weak_count();
-
-public:
-#if defined(_LIBCPP_BUILDING_LIBRARY) && \
- defined(_LIBCPP_DEPRECATED_ABI_LEGACY_LIBRARY_DEFINITIONS_FOR_INLINE_FUNCTIONS)
- void __add_shared() _NOEXCEPT;
- void __add_weak() _NOEXCEPT;
- void __release_shared() _NOEXCEPT;
-#else
- _LIBCPP_INLINE_VISIBILITY
- void __add_shared() _NOEXCEPT {
- __shared_count::__add_shared();
- }
- _LIBCPP_INLINE_VISIBILITY
- void __add_weak() _NOEXCEPT {
- __libcpp_atomic_refcount_increment(__shared_weak_owners_);
- }
- _LIBCPP_INLINE_VISIBILITY
- void __release_shared() _NOEXCEPT {
- if (__shared_count::__release_shared())
- __release_weak();
- }
-#endif
- void __release_weak() _NOEXCEPT;
- _LIBCPP_INLINE_VISIBILITY
- long use_count() const _NOEXCEPT {return __shared_count::use_count();}
- __shared_weak_count* lock() _NOEXCEPT;
-
- virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
-private:
- virtual void __on_zero_shared_weak() _NOEXCEPT = 0;
-};
-
-template <class _Tp, class _Dp, class _Alloc>
-class __shared_ptr_pointer
- : public __shared_weak_count
-{
- __compressed_pair<__compressed_pair<_Tp, _Dp>, _Alloc> __data_;
-public:
- _LIBCPP_INLINE_VISIBILITY
- __shared_ptr_pointer(_Tp __p, _Dp __d, _Alloc __a)
- : __data_(__compressed_pair<_Tp, _Dp>(__p, _VSTD::move(__d)), _VSTD::move(__a)) {}
-
-#ifndef _LIBCPP_NO_RTTI
- virtual const void* __get_deleter(const type_info&) const _NOEXCEPT;
-#endif
-
-private:
- virtual void __on_zero_shared() _NOEXCEPT;
- virtual void __on_zero_shared_weak() _NOEXCEPT;
-};
-
-#ifndef _LIBCPP_NO_RTTI
-
-template <class _Tp, class _Dp, class _Alloc>
-const void*
-__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__get_deleter(const type_info& __t) const _NOEXCEPT
-{
- return __t == typeid(_Dp) ? _VSTD::addressof(__data_.first().second()) : nullptr;
-}
-
-#endif // _LIBCPP_NO_RTTI
-
-template <class _Tp, class _Dp, class _Alloc>
-void
-__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared() _NOEXCEPT
-{
- __data_.first().second()(__data_.first().first());
- __data_.first().second().~_Dp();
-}
-
-template <class _Tp, class _Dp, class _Alloc>
-void
-__shared_ptr_pointer<_Tp, _Dp, _Alloc>::__on_zero_shared_weak() _NOEXCEPT
-{
- typedef typename __allocator_traits_rebind<_Alloc, __shared_ptr_pointer>::type _Al;
- typedef allocator_traits<_Al> _ATraits;
- typedef pointer_traits<typename _ATraits::pointer> _PTraits;
-
- _Al __a(__data_.second());
- __data_.second().~_Alloc();
- __a.deallocate(_PTraits::pointer_to(*this), 1);
-}
-
-template <class _Tp, class _Alloc>
-struct __shared_ptr_emplace
- : __shared_weak_count
-{
- template<class ..._Args>
- _LIBCPP_HIDE_FROM_ABI
- explicit __shared_ptr_emplace(_Alloc __a, _Args&& ...__args)
- : __storage_(_VSTD::move(__a))
- {
-#if _LIBCPP_STD_VER > 17
- using _TpAlloc = typename __allocator_traits_rebind<_Alloc, _Tp>::type;
- _TpAlloc __tmp(*__get_alloc());
- allocator_traits<_TpAlloc>::construct(__tmp, __get_elem(), _VSTD::forward<_Args>(__args)...);
-#else
- ::new ((void*)__get_elem()) _Tp(_VSTD::forward<_Args>(__args)...);
-#endif
- }
-
- _LIBCPP_HIDE_FROM_ABI
- _Alloc* __get_alloc() _NOEXCEPT { return __storage_.__get_alloc(); }
-
- _LIBCPP_HIDE_FROM_ABI
- _Tp* __get_elem() _NOEXCEPT { return __storage_.__get_elem(); }
-
-private:
- virtual void __on_zero_shared() _NOEXCEPT {
-#if _LIBCPP_STD_VER > 17
- using _TpAlloc = typename __allocator_traits_rebind<_Alloc, _Tp>::type;
- _TpAlloc __tmp(*__get_alloc());
- allocator_traits<_TpAlloc>::destroy(__tmp, __get_elem());
-#else
- __get_elem()->~_Tp();
-#endif
- }
-
- virtual void __on_zero_shared_weak() _NOEXCEPT {
- using _ControlBlockAlloc = typename __allocator_traits_rebind<_Alloc, __shared_ptr_emplace>::type;
- using _ControlBlockPointer = typename allocator_traits<_ControlBlockAlloc>::pointer;
- _ControlBlockAlloc __tmp(*__get_alloc());
- __storage_.~_Storage();
- allocator_traits<_ControlBlockAlloc>::deallocate(__tmp,
- pointer_traits<_ControlBlockPointer>::pointer_to(*this), 1);
- }
-
- // This class implements the control block for non-array shared pointers created
- // through `std::allocate_shared` and `std::make_shared`.
- //
- // In previous versions of the library, we used a compressed pair to store
- // both the _Alloc and the _Tp. This implies using EBO, which is incompatible
- // with Allocator construction for _Tp. To allow implementing P0674 in C++20,
- // we now use a properly aligned char buffer while making sure that we maintain
- // the same layout that we had when we used a compressed pair.
- using _CompressedPair = __compressed_pair<_Alloc, _Tp>;
- struct _ALIGNAS_TYPE(_CompressedPair) _Storage {
- char __blob_[sizeof(_CompressedPair)];
-
- _LIBCPP_HIDE_FROM_ABI explicit _Storage(_Alloc&& __a) {
- ::new ((void*)__get_alloc()) _Alloc(_VSTD::move(__a));
- }
- _LIBCPP_HIDE_FROM_ABI ~_Storage() {
- __get_alloc()->~_Alloc();
- }
- _Alloc* __get_alloc() _NOEXCEPT {
- _CompressedPair *__as_pair = reinterpret_cast<_CompressedPair*>(__blob_);
- typename _CompressedPair::_Base1* __first = _CompressedPair::__get_first_base(__as_pair);
- _Alloc *__alloc = reinterpret_cast<_Alloc*>(__first);
- return __alloc;
- }
- _LIBCPP_NO_CFI _Tp* __get_elem() _NOEXCEPT {
- _CompressedPair *__as_pair = reinterpret_cast<_CompressedPair*>(__blob_);
- typename _CompressedPair::_Base2* __second = _CompressedPair::__get_second_base(__as_pair);
- _Tp *__elem = reinterpret_cast<_Tp*>(__second);
- return __elem;
- }
- };
-
- static_assert(_LIBCPP_ALIGNOF(_Storage) == _LIBCPP_ALIGNOF(_CompressedPair), "");
- static_assert(sizeof(_Storage) == sizeof(_CompressedPair), "");
- _Storage __storage_;
-};
-
-struct __shared_ptr_dummy_rebind_allocator_type;
-template <>
-class _LIBCPP_TEMPLATE_VIS allocator<__shared_ptr_dummy_rebind_allocator_type>
-{
-public:
- template <class _Other>
- struct rebind
- {
- typedef allocator<_Other> other;
- };
-};
-
-template<class _Tp> class _LIBCPP_TEMPLATE_VIS enable_shared_from_this;
-
-template<class _Tp, class _Up>
-struct __compatible_with
-#if _LIBCPP_STD_VER > 14
- : is_convertible<remove_extent_t<_Tp>*, remove_extent_t<_Up>*> {};
-#else
- : is_convertible<_Tp*, _Up*> {};
-#endif // _LIBCPP_STD_VER > 14
-
-template <class _Dp, class _Pt,
- class = decltype(_VSTD::declval<_Dp>()(_VSTD::declval<_Pt>()))>
-static true_type __well_formed_deleter_test(int);
-
-template <class, class>
-static false_type __well_formed_deleter_test(...);
-
-template <class _Dp, class _Pt>
-struct __well_formed_deleter : decltype(__well_formed_deleter_test<_Dp, _Pt>(0)) {};
-
-template<class _Dp, class _Tp, class _Yp>
-struct __shared_ptr_deleter_ctor_reqs
-{
- static const bool value = __compatible_with<_Tp, _Yp>::value &&
- is_move_constructible<_Dp>::value &&
- __well_formed_deleter<_Dp, _Tp*>::value;
-};
-
-#if defined(_LIBCPP_ABI_ENABLE_SHARED_PTR_TRIVIAL_ABI)
-# define _LIBCPP_SHARED_PTR_TRIVIAL_ABI __attribute__((trivial_abi))
-#else
-# define _LIBCPP_SHARED_PTR_TRIVIAL_ABI
-#endif
-
-template<class _Tp>
-class _LIBCPP_SHARED_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS shared_ptr
-{
-public:
-#if _LIBCPP_STD_VER > 14
- typedef weak_ptr<_Tp> weak_type;
- typedef remove_extent_t<_Tp> element_type;
-#else
- typedef _Tp element_type;
-#endif
-
-private:
- element_type* __ptr_;
- __shared_weak_count* __cntrl_;
-
- struct __nat {int __for_bool_;};
-public:
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_CONSTEXPR shared_ptr() _NOEXCEPT;
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_CONSTEXPR shared_ptr(nullptr_t) _NOEXCEPT;
- template<class _Yp>
- explicit shared_ptr(_Yp* __p,
- typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type = __nat());
- template<class _Yp, class _Dp>
- shared_ptr(_Yp* __p, _Dp __d,
- typename enable_if<__shared_ptr_deleter_ctor_reqs<_Dp, _Yp, element_type>::value, __nat>::type = __nat());
- template<class _Yp, class _Dp, class _Alloc>
- shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
- typename enable_if<__shared_ptr_deleter_ctor_reqs<_Dp, _Yp, element_type>::value, __nat>::type = __nat());
- template <class _Dp> shared_ptr(nullptr_t __p, _Dp __d);
- template <class _Dp, class _Alloc> shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a);
- template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(const shared_ptr<_Yp>& __r, element_type* __p) _NOEXCEPT;
- _LIBCPP_INLINE_VISIBILITY
- shared_ptr(const shared_ptr& __r) _NOEXCEPT;
- template<class _Yp>
- _LIBCPP_INLINE_VISIBILITY
- shared_ptr(const shared_ptr<_Yp>& __r,
- typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type = __nat())
- _NOEXCEPT;
- _LIBCPP_INLINE_VISIBILITY
- shared_ptr(shared_ptr&& __r) _NOEXCEPT;
- template<class _Yp> _LIBCPP_INLINE_VISIBILITY shared_ptr(shared_ptr<_Yp>&& __r,
- typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type = __nat())
- _NOEXCEPT;
- template<class _Yp> explicit shared_ptr(const weak_ptr<_Yp>& __r,
- typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type= __nat());
-#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
- template<class _Yp>
- shared_ptr(auto_ptr<_Yp>&& __r,
- typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type = __nat());
-#endif
- template <class _Yp, class _Dp>
- shared_ptr(unique_ptr<_Yp, _Dp>&&,
- typename enable_if
- <
- !is_lvalue_reference<_Dp>::value &&
- is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
- __nat
- >::type = __nat());
- template <class _Yp, class _Dp>
- shared_ptr(unique_ptr<_Yp, _Dp>&&,
- typename enable_if
- <
- is_lvalue_reference<_Dp>::value &&
- is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
- __nat
- >::type = __nat());
-
- ~shared_ptr();
-
- _LIBCPP_INLINE_VISIBILITY
- shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT;
- template<class _Yp>
- typename enable_if
- <
- __compatible_with<_Yp, element_type>::value,
- shared_ptr&
- >::type
- _LIBCPP_INLINE_VISIBILITY
- operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT;
- _LIBCPP_INLINE_VISIBILITY
- shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT;
- template<class _Yp>
- typename enable_if
- <
- __compatible_with<_Yp, element_type>::value,
- shared_ptr&
- >::type
- _LIBCPP_INLINE_VISIBILITY
- operator=(shared_ptr<_Yp>&& __r);
-#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
- template<class _Yp>
- _LIBCPP_INLINE_VISIBILITY
- typename enable_if
- <
- !is_array<_Yp>::value &&
- is_convertible<_Yp*, element_type*>::value,
- shared_ptr
- >::type&
- operator=(auto_ptr<_Yp>&& __r);
-#endif
- template <class _Yp, class _Dp>
- typename enable_if
- <
- is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
- shared_ptr&
- >::type
- _LIBCPP_INLINE_VISIBILITY
- operator=(unique_ptr<_Yp, _Dp>&& __r);
-
- _LIBCPP_INLINE_VISIBILITY
- void swap(shared_ptr& __r) _NOEXCEPT;
- _LIBCPP_INLINE_VISIBILITY
- void reset() _NOEXCEPT;
- template<class _Yp>
- typename enable_if
- <
- __compatible_with<_Yp, element_type>::value,
- void
- >::type
- _LIBCPP_INLINE_VISIBILITY
- reset(_Yp* __p);
- template<class _Yp, class _Dp>
- typename enable_if
- <
- __compatible_with<_Yp, element_type>::value,
- void
- >::type
- _LIBCPP_INLINE_VISIBILITY
- reset(_Yp* __p, _Dp __d);
- template<class _Yp, class _Dp, class _Alloc>
- typename enable_if
- <
- __compatible_with<_Yp, element_type>::value,
- void
- >::type
- _LIBCPP_INLINE_VISIBILITY
- reset(_Yp* __p, _Dp __d, _Alloc __a);
-
- _LIBCPP_INLINE_VISIBILITY
- element_type* get() const _NOEXCEPT {return __ptr_;}
- _LIBCPP_INLINE_VISIBILITY
- typename add_lvalue_reference<element_type>::type operator*() const _NOEXCEPT
- {return *__ptr_;}
- _LIBCPP_INLINE_VISIBILITY
- element_type* operator->() const _NOEXCEPT
- {
- static_assert(!_VSTD::is_array<_Tp>::value,
- "std::shared_ptr<T>::operator-> is only valid when T is not an array type.");
- return __ptr_;
- }
- _LIBCPP_INLINE_VISIBILITY
- long use_count() const _NOEXCEPT {return __cntrl_ ? __cntrl_->use_count() : 0;}
- _LIBCPP_INLINE_VISIBILITY
- bool unique() const _NOEXCEPT {return use_count() == 1;}
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_EXPLICIT operator bool() const _NOEXCEPT {return get() != nullptr;}
- template <class _Up>
- _LIBCPP_INLINE_VISIBILITY
- bool owner_before(shared_ptr<_Up> const& __p) const _NOEXCEPT
- {return __cntrl_ < __p.__cntrl_;}
- template <class _Up>
- _LIBCPP_INLINE_VISIBILITY
- bool owner_before(weak_ptr<_Up> const& __p) const _NOEXCEPT
- {return __cntrl_ < __p.__cntrl_;}
- _LIBCPP_INLINE_VISIBILITY
- bool
- __owner_equivalent(const shared_ptr& __p) const
- {return __cntrl_ == __p.__cntrl_;}
-
-#if _LIBCPP_STD_VER > 14
- typename add_lvalue_reference<element_type>::type
- _LIBCPP_INLINE_VISIBILITY
- operator[](ptrdiff_t __i) const
- {
- static_assert(_VSTD::is_array<_Tp>::value,
- "std::shared_ptr<T>::operator[] is only valid when T is an array type.");
- return __ptr_[__i];
- }
-#endif
-
-#ifndef _LIBCPP_NO_RTTI
- template <class _Dp>
- _LIBCPP_INLINE_VISIBILITY
- _Dp* __get_deleter() const _NOEXCEPT
- {return static_cast<_Dp*>(__cntrl_
- ? const_cast<void *>(__cntrl_->__get_deleter(typeid(_Dp)))
- : nullptr);}
-#endif // _LIBCPP_NO_RTTI
-
- template<class _Yp, class _CntrlBlk>
- static shared_ptr<_Tp>
- __create_with_control_block(_Yp* __p, _CntrlBlk* __cntrl) _NOEXCEPT
- {
- shared_ptr<_Tp> __r;
- __r.__ptr_ = __p;
- __r.__cntrl_ = __cntrl;
- __r.__enable_weak_this(__r.__ptr_, __r.__ptr_);
- return __r;
- }
-
-private:
- template <class _Yp, bool = is_function<_Yp>::value>
- struct __shared_ptr_default_allocator
- {
- typedef allocator<_Yp> type;
- };
-
- template <class _Yp>
- struct __shared_ptr_default_allocator<_Yp, true>
- {
- typedef allocator<__shared_ptr_dummy_rebind_allocator_type> type;
- };
-
- template <class _Yp, class _OrigPtr>
- _LIBCPP_INLINE_VISIBILITY
- typename enable_if<is_convertible<_OrigPtr*,
- const enable_shared_from_this<_Yp>*
- >::value,
- void>::type
- __enable_weak_this(const enable_shared_from_this<_Yp>* __e,
- _OrigPtr* __ptr) _NOEXCEPT
- {
- typedef typename remove_cv<_Yp>::type _RawYp;
- if (__e && __e->__weak_this_.expired())
- {
- __e->__weak_this_ = shared_ptr<_RawYp>(*this,
- const_cast<_RawYp*>(static_cast<const _Yp*>(__ptr)));
- }
- }
-
- _LIBCPP_INLINE_VISIBILITY void __enable_weak_this(...) _NOEXCEPT {}
-
- template <class, class _Yp>
- struct __shared_ptr_default_delete
- : default_delete<_Yp> {};
-
- template <class _Yp, class _Un, size_t _Sz>
- struct __shared_ptr_default_delete<_Yp[_Sz], _Un>
- : default_delete<_Yp[]> {};
-
- template <class _Yp, class _Un>
- struct __shared_ptr_default_delete<_Yp[], _Un>
- : default_delete<_Yp[]> {};
-
- template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr;
- template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr;
-};
-
-#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES
-template<class _Tp>
-shared_ptr(weak_ptr<_Tp>) -> shared_ptr<_Tp>;
-template<class _Tp, class _Dp>
-shared_ptr(unique_ptr<_Tp, _Dp>) -> shared_ptr<_Tp>;
-#endif
-
-template<class _Tp>
-inline
-_LIBCPP_CONSTEXPR
-shared_ptr<_Tp>::shared_ptr() _NOEXCEPT
- : __ptr_(nullptr),
- __cntrl_(nullptr)
-{
-}
-
-template<class _Tp>
-inline
-_LIBCPP_CONSTEXPR
-shared_ptr<_Tp>::shared_ptr(nullptr_t) _NOEXCEPT
- : __ptr_(nullptr),
- __cntrl_(nullptr)
-{
-}
-
-template<class _Tp>
-template<class _Yp>
-shared_ptr<_Tp>::shared_ptr(_Yp* __p,
- typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type)
- : __ptr_(__p)
-{
- unique_ptr<_Yp> __hold(__p);
- typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
- typedef __shared_ptr_pointer<_Yp*, __shared_ptr_default_delete<_Tp, _Yp>, _AllocT > _CntrlBlk;
- __cntrl_ = new _CntrlBlk(__p, __shared_ptr_default_delete<_Tp, _Yp>(), _AllocT());
- __hold.release();
- __enable_weak_this(__p, __p);
-}
-
-template<class _Tp>
-template<class _Yp, class _Dp>
-shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d,
- typename enable_if<__shared_ptr_deleter_ctor_reqs<_Dp, _Yp, element_type>::value, __nat>::type)
- : __ptr_(__p)
-{
-#ifndef _LIBCPP_NO_EXCEPTIONS
- try
- {
-#endif // _LIBCPP_NO_EXCEPTIONS
- typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
- typedef __shared_ptr_pointer<_Yp*, _Dp, _AllocT > _CntrlBlk;
-#ifndef _LIBCPP_CXX03_LANG
- __cntrl_ = new _CntrlBlk(__p, _VSTD::move(__d), _AllocT());
-#else
- __cntrl_ = new _CntrlBlk(__p, __d, _AllocT());
-#endif // not _LIBCPP_CXX03_LANG
- __enable_weak_this(__p, __p);
-#ifndef _LIBCPP_NO_EXCEPTIONS
- }
- catch (...)
- {
- __d(__p);
- throw;
- }
-#endif // _LIBCPP_NO_EXCEPTIONS
-}
-
-template<class _Tp>
-template<class _Dp>
-shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d)
- : __ptr_(nullptr)
-{
-#ifndef _LIBCPP_NO_EXCEPTIONS
- try
- {
-#endif // _LIBCPP_NO_EXCEPTIONS
- typedef typename __shared_ptr_default_allocator<_Tp>::type _AllocT;
- typedef __shared_ptr_pointer<nullptr_t, _Dp, _AllocT > _CntrlBlk;
-#ifndef _LIBCPP_CXX03_LANG
- __cntrl_ = new _CntrlBlk(__p, _VSTD::move(__d), _AllocT());
-#else
- __cntrl_ = new _CntrlBlk(__p, __d, _AllocT());
-#endif // not _LIBCPP_CXX03_LANG
-#ifndef _LIBCPP_NO_EXCEPTIONS
- }
- catch (...)
- {
- __d(__p);
- throw;
- }
-#endif // _LIBCPP_NO_EXCEPTIONS
-}
-
-template<class _Tp>
-template<class _Yp, class _Dp, class _Alloc>
-shared_ptr<_Tp>::shared_ptr(_Yp* __p, _Dp __d, _Alloc __a,
- typename enable_if<__shared_ptr_deleter_ctor_reqs<_Dp, _Yp, element_type>::value, __nat>::type)
- : __ptr_(__p)
-{
-#ifndef _LIBCPP_NO_EXCEPTIONS
- try
- {
-#endif // _LIBCPP_NO_EXCEPTIONS
- typedef __shared_ptr_pointer<_Yp*, _Dp, _Alloc> _CntrlBlk;
- typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
- typedef __allocator_destructor<_A2> _D2;
- _A2 __a2(__a);
- unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
- ::new ((void*)_VSTD::addressof(*__hold2.get()))
-#ifndef _LIBCPP_CXX03_LANG
- _CntrlBlk(__p, _VSTD::move(__d), __a);
-#else
- _CntrlBlk(__p, __d, __a);
-#endif // not _LIBCPP_CXX03_LANG
- __cntrl_ = _VSTD::addressof(*__hold2.release());
- __enable_weak_this(__p, __p);
-#ifndef _LIBCPP_NO_EXCEPTIONS
- }
- catch (...)
- {
- __d(__p);
- throw;
- }
-#endif // _LIBCPP_NO_EXCEPTIONS
-}
-
-template<class _Tp>
-template<class _Dp, class _Alloc>
-shared_ptr<_Tp>::shared_ptr(nullptr_t __p, _Dp __d, _Alloc __a)
- : __ptr_(nullptr)
-{
-#ifndef _LIBCPP_NO_EXCEPTIONS
- try
- {
-#endif // _LIBCPP_NO_EXCEPTIONS
- typedef __shared_ptr_pointer<nullptr_t, _Dp, _Alloc> _CntrlBlk;
- typedef typename __allocator_traits_rebind<_Alloc, _CntrlBlk>::type _A2;
- typedef __allocator_destructor<_A2> _D2;
- _A2 __a2(__a);
- unique_ptr<_CntrlBlk, _D2> __hold2(__a2.allocate(1), _D2(__a2, 1));
- ::new ((void*)_VSTD::addressof(*__hold2.get()))
-#ifndef _LIBCPP_CXX03_LANG
- _CntrlBlk(__p, _VSTD::move(__d), __a);
-#else
- _CntrlBlk(__p, __d, __a);
-#endif // not _LIBCPP_CXX03_LANG
- __cntrl_ = _VSTD::addressof(*__hold2.release());
-#ifndef _LIBCPP_NO_EXCEPTIONS
- }
- catch (...)
- {
- __d(__p);
- throw;
- }
-#endif // _LIBCPP_NO_EXCEPTIONS
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r, element_type *__p) _NOEXCEPT
- : __ptr_(__p),
- __cntrl_(__r.__cntrl_)
-{
- if (__cntrl_)
- __cntrl_->__add_shared();
-}
-
-template<class _Tp>
-inline
-shared_ptr<_Tp>::shared_ptr(const shared_ptr& __r) _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- if (__cntrl_)
- __cntrl_->__add_shared();
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-shared_ptr<_Tp>::shared_ptr(const shared_ptr<_Yp>& __r,
- typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type)
- _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- if (__cntrl_)
- __cntrl_->__add_shared();
-}
-
-template<class _Tp>
-inline
-shared_ptr<_Tp>::shared_ptr(shared_ptr&& __r) _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- __r.__ptr_ = nullptr;
- __r.__cntrl_ = nullptr;
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-shared_ptr<_Tp>::shared_ptr(shared_ptr<_Yp>&& __r,
- typename enable_if<__compatible_with<_Yp, element_type>::value, __nat>::type)
- _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- __r.__ptr_ = nullptr;
- __r.__cntrl_ = nullptr;
-}
-
-#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
-template<class _Tp>
-template<class _Yp>
-shared_ptr<_Tp>::shared_ptr(auto_ptr<_Yp>&& __r,
- typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
- : __ptr_(__r.get())
-{
- typedef __shared_ptr_pointer<_Yp*, default_delete<_Yp>, allocator<_Yp> > _CntrlBlk;
- __cntrl_ = new _CntrlBlk(__r.get(), default_delete<_Yp>(), allocator<_Yp>());
- __enable_weak_this(__r.get(), __r.get());
- __r.release();
-}
-#endif
-
-template<class _Tp>
-template <class _Yp, class _Dp>
-shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
- typename enable_if
- <
- !is_lvalue_reference<_Dp>::value &&
- is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
- __nat
- >::type)
- : __ptr_(__r.get())
-{
-#if _LIBCPP_STD_VER > 11
- if (__ptr_ == nullptr)
- __cntrl_ = nullptr;
- else
-#endif
- {
- typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
- typedef __shared_ptr_pointer<typename unique_ptr<_Yp, _Dp>::pointer, _Dp, _AllocT > _CntrlBlk;
- __cntrl_ = new _CntrlBlk(__r.get(), __r.get_deleter(), _AllocT());
- __enable_weak_this(__r.get(), __r.get());
- }
- __r.release();
-}
-
-template<class _Tp>
-template <class _Yp, class _Dp>
-shared_ptr<_Tp>::shared_ptr(unique_ptr<_Yp, _Dp>&& __r,
- typename enable_if
- <
- is_lvalue_reference<_Dp>::value &&
- is_convertible<typename unique_ptr<_Yp, _Dp>::pointer, element_type*>::value,
- __nat
- >::type)
- : __ptr_(__r.get())
-{
-#if _LIBCPP_STD_VER > 11
- if (__ptr_ == nullptr)
- __cntrl_ = nullptr;
- else
-#endif
- {
- typedef typename __shared_ptr_default_allocator<_Yp>::type _AllocT;
- typedef __shared_ptr_pointer<typename unique_ptr<_Yp, _Dp>::pointer,
- reference_wrapper<typename remove_reference<_Dp>::type>,
- _AllocT > _CntrlBlk;
- __cntrl_ = new _CntrlBlk(__r.get(), _VSTD::ref(__r.get_deleter()), _AllocT());
- __enable_weak_this(__r.get(), __r.get());
- }
- __r.release();
-}
-
-template<class _Tp>
-shared_ptr<_Tp>::~shared_ptr()
-{
- if (__cntrl_)
- __cntrl_->__release_shared();
-}
-
-template<class _Tp>
-inline
-shared_ptr<_Tp>&
-shared_ptr<_Tp>::operator=(const shared_ptr& __r) _NOEXCEPT
-{
- shared_ptr(__r).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-typename enable_if
-<
- __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
- shared_ptr<_Tp>&
->::type
-shared_ptr<_Tp>::operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT
-{
- shared_ptr(__r).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-inline
-shared_ptr<_Tp>&
-shared_ptr<_Tp>::operator=(shared_ptr&& __r) _NOEXCEPT
-{
- shared_ptr(_VSTD::move(__r)).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-typename enable_if
-<
- __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
- shared_ptr<_Tp>&
->::type
-shared_ptr<_Tp>::operator=(shared_ptr<_Yp>&& __r)
-{
- shared_ptr(_VSTD::move(__r)).swap(*this);
- return *this;
-}
-
-#if _LIBCPP_STD_VER <= 14 || defined(_LIBCPP_ENABLE_CXX17_REMOVED_AUTO_PTR)
-template<class _Tp>
-template<class _Yp>
-inline
-typename enable_if
-<
- !is_array<_Yp>::value &&
- is_convertible<_Yp*, typename shared_ptr<_Tp>::element_type*>::value,
- shared_ptr<_Tp>
->::type&
-shared_ptr<_Tp>::operator=(auto_ptr<_Yp>&& __r)
-{
- shared_ptr(_VSTD::move(__r)).swap(*this);
- return *this;
-}
-#endif
-
-template<class _Tp>
-template <class _Yp, class _Dp>
-inline
-typename enable_if
-<
- is_convertible<typename unique_ptr<_Yp, _Dp>::pointer,
- typename shared_ptr<_Tp>::element_type*>::value,
- shared_ptr<_Tp>&
->::type
-shared_ptr<_Tp>::operator=(unique_ptr<_Yp, _Dp>&& __r)
-{
- shared_ptr(_VSTD::move(__r)).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-inline
-void
-shared_ptr<_Tp>::swap(shared_ptr& __r) _NOEXCEPT
-{
- _VSTD::swap(__ptr_, __r.__ptr_);
- _VSTD::swap(__cntrl_, __r.__cntrl_);
-}
-
-template<class _Tp>
-inline
-void
-shared_ptr<_Tp>::reset() _NOEXCEPT
-{
- shared_ptr().swap(*this);
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-typename enable_if
-<
- __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
- void
->::type
-shared_ptr<_Tp>::reset(_Yp* __p)
-{
- shared_ptr(__p).swap(*this);
-}
-
-template<class _Tp>
-template<class _Yp, class _Dp>
-inline
-typename enable_if
-<
- __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
- void
->::type
-shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d)
-{
- shared_ptr(__p, __d).swap(*this);
-}
-
-template<class _Tp>
-template<class _Yp, class _Dp, class _Alloc>
-inline
-typename enable_if
-<
- __compatible_with<_Yp, typename shared_ptr<_Tp>::element_type>::value,
- void
->::type
-shared_ptr<_Tp>::reset(_Yp* __p, _Dp __d, _Alloc __a)
-{
- shared_ptr(__p, __d, __a).swap(*this);
-}
-
-//
-// std::allocate_shared and std::make_shared
-//
-template<class _Tp, class _Alloc, class ..._Args, class = _EnableIf<!is_array<_Tp>::value> >
-_LIBCPP_HIDE_FROM_ABI
-shared_ptr<_Tp> allocate_shared(const _Alloc& __a, _Args&& ...__args)
-{
- using _ControlBlock = __shared_ptr_emplace<_Tp, _Alloc>;
- using _ControlBlockAllocator = typename __allocator_traits_rebind<_Alloc, _ControlBlock>::type;
- __allocation_guard<_ControlBlockAllocator> __guard(__a, 1);
- ::new ((void*)_VSTD::addressof(*__guard.__get())) _ControlBlock(__a, _VSTD::forward<_Args>(__args)...);
- auto __control_block = __guard.__release_ptr();
- return shared_ptr<_Tp>::__create_with_control_block((*__control_block).__get_elem(), _VSTD::addressof(*__control_block));
-}
-
-template<class _Tp, class ..._Args, class = _EnableIf<!is_array<_Tp>::value> >
-_LIBCPP_HIDE_FROM_ABI
-shared_ptr<_Tp> make_shared(_Args&& ...__args)
-{
- return _VSTD::allocate_shared<_Tp>(allocator<_Tp>(), _VSTD::forward<_Args>(__args)...);
-}
-
-template<class _Tp, class _Up>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator==(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
-{
- return __x.get() == __y.get();
-}
-
-template<class _Tp, class _Up>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator!=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
-{
- return !(__x == __y);
-}
-
-template<class _Tp, class _Up>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator<(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
-{
-#if _LIBCPP_STD_VER <= 11
- typedef typename common_type<_Tp*, _Up*>::type _Vp;
- return less<_Vp>()(__x.get(), __y.get());
-#else
- return less<>()(__x.get(), __y.get());
-#endif
-
-}
-
-template<class _Tp, class _Up>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator>(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
-{
- return __y < __x;
-}
-
-template<class _Tp, class _Up>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator<=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
-{
- return !(__y < __x);
-}
-
-template<class _Tp, class _Up>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator>=(const shared_ptr<_Tp>& __x, const shared_ptr<_Up>& __y) _NOEXCEPT
-{
- return !(__x < __y);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator==(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
-{
- return !__x;
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator==(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
-{
- return !__x;
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator!=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
-{
- return static_cast<bool>(__x);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator!=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
-{
- return static_cast<bool>(__x);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator<(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
-{
- return less<_Tp*>()(__x.get(), nullptr);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator<(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
-{
- return less<_Tp*>()(nullptr, __x.get());
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator>(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
-{
- return nullptr < __x;
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator>(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
-{
- return __x < nullptr;
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator<=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
-{
- return !(nullptr < __x);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator<=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
-{
- return !(__x < nullptr);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator>=(const shared_ptr<_Tp>& __x, nullptr_t) _NOEXCEPT
-{
- return !(__x < nullptr);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-operator>=(nullptr_t, const shared_ptr<_Tp>& __x) _NOEXCEPT
-{
- return !(nullptr < __x);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-void
-swap(shared_ptr<_Tp>& __x, shared_ptr<_Tp>& __y) _NOEXCEPT
-{
- __x.swap(__y);
-}
-
-template<class _Tp, class _Up>
-inline _LIBCPP_INLINE_VISIBILITY
-shared_ptr<_Tp>
-static_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
-{
- return shared_ptr<_Tp>(__r,
- static_cast<
- typename shared_ptr<_Tp>::element_type*>(__r.get()));
-}
-
-template<class _Tp, class _Up>
-inline _LIBCPP_INLINE_VISIBILITY
-shared_ptr<_Tp>
-dynamic_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
-{
- typedef typename shared_ptr<_Tp>::element_type _ET;
- _ET* __p = dynamic_cast<_ET*>(__r.get());
- return __p ? shared_ptr<_Tp>(__r, __p) : shared_ptr<_Tp>();
-}
-
-template<class _Tp, class _Up>
-shared_ptr<_Tp>
-const_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
-{
- typedef typename shared_ptr<_Tp>::element_type _RTp;
- return shared_ptr<_Tp>(__r, const_cast<_RTp*>(__r.get()));
-}
-
-template<class _Tp, class _Up>
-shared_ptr<_Tp>
-reinterpret_pointer_cast(const shared_ptr<_Up>& __r) _NOEXCEPT
-{
- return shared_ptr<_Tp>(__r,
- reinterpret_cast<
- typename shared_ptr<_Tp>::element_type*>(__r.get()));
-}
-
-#ifndef _LIBCPP_NO_RTTI
-
-template<class _Dp, class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-_Dp*
-get_deleter(const shared_ptr<_Tp>& __p) _NOEXCEPT
-{
- return __p.template __get_deleter<_Dp>();
-}
-
-#endif // _LIBCPP_NO_RTTI
-
-template<class _Tp>
-class _LIBCPP_SHARED_PTR_TRIVIAL_ABI _LIBCPP_TEMPLATE_VIS weak_ptr
-{
-public:
- typedef _Tp element_type;
-private:
- element_type* __ptr_;
- __shared_weak_count* __cntrl_;
-
-public:
- _LIBCPP_INLINE_VISIBILITY
- _LIBCPP_CONSTEXPR weak_ptr() _NOEXCEPT;
- template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(shared_ptr<_Yp> const& __r,
- typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
- _NOEXCEPT;
- _LIBCPP_INLINE_VISIBILITY
- weak_ptr(weak_ptr const& __r) _NOEXCEPT;
- template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp> const& __r,
- typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
- _NOEXCEPT;
-
- _LIBCPP_INLINE_VISIBILITY
- weak_ptr(weak_ptr&& __r) _NOEXCEPT;
- template<class _Yp> _LIBCPP_INLINE_VISIBILITY weak_ptr(weak_ptr<_Yp>&& __r,
- typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type = 0)
- _NOEXCEPT;
- ~weak_ptr();
-
- _LIBCPP_INLINE_VISIBILITY
- weak_ptr& operator=(weak_ptr const& __r) _NOEXCEPT;
- template<class _Yp>
- typename enable_if
- <
- is_convertible<_Yp*, element_type*>::value,
- weak_ptr&
- >::type
- _LIBCPP_INLINE_VISIBILITY
- operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT;
-
- _LIBCPP_INLINE_VISIBILITY
- weak_ptr& operator=(weak_ptr&& __r) _NOEXCEPT;
- template<class _Yp>
- typename enable_if
- <
- is_convertible<_Yp*, element_type*>::value,
- weak_ptr&
- >::type
- _LIBCPP_INLINE_VISIBILITY
- operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT;
-
- template<class _Yp>
- typename enable_if
- <
- is_convertible<_Yp*, element_type*>::value,
- weak_ptr&
- >::type
- _LIBCPP_INLINE_VISIBILITY
- operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT;
-
- _LIBCPP_INLINE_VISIBILITY
- void swap(weak_ptr& __r) _NOEXCEPT;
- _LIBCPP_INLINE_VISIBILITY
- void reset() _NOEXCEPT;
-
- _LIBCPP_INLINE_VISIBILITY
- long use_count() const _NOEXCEPT
- {return __cntrl_ ? __cntrl_->use_count() : 0;}
- _LIBCPP_INLINE_VISIBILITY
- bool expired() const _NOEXCEPT
- {return __cntrl_ == nullptr || __cntrl_->use_count() == 0;}
- shared_ptr<_Tp> lock() const _NOEXCEPT;
- template<class _Up>
- _LIBCPP_INLINE_VISIBILITY
- bool owner_before(const shared_ptr<_Up>& __r) const _NOEXCEPT
- {return __cntrl_ < __r.__cntrl_;}
- template<class _Up>
- _LIBCPP_INLINE_VISIBILITY
- bool owner_before(const weak_ptr<_Up>& __r) const _NOEXCEPT
- {return __cntrl_ < __r.__cntrl_;}
-
- template <class _Up> friend class _LIBCPP_TEMPLATE_VIS weak_ptr;
- template <class _Up> friend class _LIBCPP_TEMPLATE_VIS shared_ptr;
-};
-
-#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES
-template<class _Tp>
-weak_ptr(shared_ptr<_Tp>) -> weak_ptr<_Tp>;
-#endif
-
-template<class _Tp>
-inline
-_LIBCPP_CONSTEXPR
-weak_ptr<_Tp>::weak_ptr() _NOEXCEPT
- : __ptr_(nullptr),
- __cntrl_(nullptr)
-{
-}
-
-template<class _Tp>
-inline
-weak_ptr<_Tp>::weak_ptr(weak_ptr const& __r) _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- if (__cntrl_)
- __cntrl_->__add_weak();
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-weak_ptr<_Tp>::weak_ptr(shared_ptr<_Yp> const& __r,
- typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
- _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- if (__cntrl_)
- __cntrl_->__add_weak();
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp> const& __r,
- typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
- _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- if (__cntrl_)
- __cntrl_->__add_weak();
-}
-
-template<class _Tp>
-inline
-weak_ptr<_Tp>::weak_ptr(weak_ptr&& __r) _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- __r.__ptr_ = nullptr;
- __r.__cntrl_ = nullptr;
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-weak_ptr<_Tp>::weak_ptr(weak_ptr<_Yp>&& __r,
- typename enable_if<is_convertible<_Yp*, _Tp*>::value, __nat*>::type)
- _NOEXCEPT
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_)
-{
- __r.__ptr_ = nullptr;
- __r.__cntrl_ = nullptr;
-}
-
-template<class _Tp>
-weak_ptr<_Tp>::~weak_ptr()
-{
- if (__cntrl_)
- __cntrl_->__release_weak();
-}
-
-template<class _Tp>
-inline
-weak_ptr<_Tp>&
-weak_ptr<_Tp>::operator=(weak_ptr const& __r) _NOEXCEPT
-{
- weak_ptr(__r).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-typename enable_if
-<
- is_convertible<_Yp*, _Tp*>::value,
- weak_ptr<_Tp>&
->::type
-weak_ptr<_Tp>::operator=(weak_ptr<_Yp> const& __r) _NOEXCEPT
-{
- weak_ptr(__r).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-inline
-weak_ptr<_Tp>&
-weak_ptr<_Tp>::operator=(weak_ptr&& __r) _NOEXCEPT
-{
- weak_ptr(_VSTD::move(__r)).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-typename enable_if
-<
- is_convertible<_Yp*, _Tp*>::value,
- weak_ptr<_Tp>&
->::type
-weak_ptr<_Tp>::operator=(weak_ptr<_Yp>&& __r) _NOEXCEPT
-{
- weak_ptr(_VSTD::move(__r)).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-template<class _Yp>
-inline
-typename enable_if
-<
- is_convertible<_Yp*, _Tp*>::value,
- weak_ptr<_Tp>&
->::type
-weak_ptr<_Tp>::operator=(shared_ptr<_Yp> const& __r) _NOEXCEPT
-{
- weak_ptr(__r).swap(*this);
- return *this;
-}
-
-template<class _Tp>
-inline
-void
-weak_ptr<_Tp>::swap(weak_ptr& __r) _NOEXCEPT
-{
- _VSTD::swap(__ptr_, __r.__ptr_);
- _VSTD::swap(__cntrl_, __r.__cntrl_);
-}
-
-template<class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-void
-swap(weak_ptr<_Tp>& __x, weak_ptr<_Tp>& __y) _NOEXCEPT
-{
- __x.swap(__y);
-}
-
-template<class _Tp>
-inline
-void
-weak_ptr<_Tp>::reset() _NOEXCEPT
-{
- weak_ptr().swap(*this);
-}
-
-template<class _Tp>
-template<class _Yp>
-shared_ptr<_Tp>::shared_ptr(const weak_ptr<_Yp>& __r,
- typename enable_if<is_convertible<_Yp*, element_type*>::value, __nat>::type)
- : __ptr_(__r.__ptr_),
- __cntrl_(__r.__cntrl_ ? __r.__cntrl_->lock() : __r.__cntrl_)
-{
- if (__cntrl_ == nullptr)
- __throw_bad_weak_ptr();
-}
-
-template<class _Tp>
-shared_ptr<_Tp>
-weak_ptr<_Tp>::lock() const _NOEXCEPT
-{
- shared_ptr<_Tp> __r;
- __r.__cntrl_ = __cntrl_ ? __cntrl_->lock() : __cntrl_;
- if (__r.__cntrl_)
- __r.__ptr_ = __ptr_;
- return __r;
-}
-
-#if _LIBCPP_STD_VER > 14
-template <class _Tp = void> struct owner_less;
-#else
-template <class _Tp> struct owner_less;
-#endif
-
-template <class _Tp>
-struct _LIBCPP_TEMPLATE_VIS owner_less<shared_ptr<_Tp> >
- : binary_function<shared_ptr<_Tp>, shared_ptr<_Tp>, bool>
-{
- typedef bool result_type;
- _LIBCPP_INLINE_VISIBILITY
- bool operator()(shared_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
- _LIBCPP_INLINE_VISIBILITY
- bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
- _LIBCPP_INLINE_VISIBILITY
- bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
-};
-
-template <class _Tp>
-struct _LIBCPP_TEMPLATE_VIS owner_less<weak_ptr<_Tp> >
- : binary_function<weak_ptr<_Tp>, weak_ptr<_Tp>, bool>
-{
- typedef bool result_type;
- _LIBCPP_INLINE_VISIBILITY
- bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
- _LIBCPP_INLINE_VISIBILITY
- bool operator()(shared_ptr<_Tp> const& __x, weak_ptr<_Tp> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
- _LIBCPP_INLINE_VISIBILITY
- bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Tp> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
-};
-
-#if _LIBCPP_STD_VER > 14
-template <>
-struct _LIBCPP_TEMPLATE_VIS owner_less<void>
-{
- template <class _Tp, class _Up>
- _LIBCPP_INLINE_VISIBILITY
- bool operator()( shared_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
- template <class _Tp, class _Up>
- _LIBCPP_INLINE_VISIBILITY
- bool operator()( shared_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
- template <class _Tp, class _Up>
- _LIBCPP_INLINE_VISIBILITY
- bool operator()( weak_ptr<_Tp> const& __x, shared_ptr<_Up> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
- template <class _Tp, class _Up>
- _LIBCPP_INLINE_VISIBILITY
- bool operator()( weak_ptr<_Tp> const& __x, weak_ptr<_Up> const& __y) const _NOEXCEPT
- {return __x.owner_before(__y);}
- typedef void is_transparent;
-};
-#endif
-
-template<class _Tp>
-class _LIBCPP_TEMPLATE_VIS enable_shared_from_this
-{
- mutable weak_ptr<_Tp> __weak_this_;
-protected:
- _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
- enable_shared_from_this() _NOEXCEPT {}
- _LIBCPP_INLINE_VISIBILITY
- enable_shared_from_this(enable_shared_from_this const&) _NOEXCEPT {}
- _LIBCPP_INLINE_VISIBILITY
- enable_shared_from_this& operator=(enable_shared_from_this const&) _NOEXCEPT
- {return *this;}
- _LIBCPP_INLINE_VISIBILITY
- ~enable_shared_from_this() {}
-public:
- _LIBCPP_INLINE_VISIBILITY
- shared_ptr<_Tp> shared_from_this()
- {return shared_ptr<_Tp>(__weak_this_);}
- _LIBCPP_INLINE_VISIBILITY
- shared_ptr<_Tp const> shared_from_this() const
- {return shared_ptr<const _Tp>(__weak_this_);}
-
-#if _LIBCPP_STD_VER > 14
- _LIBCPP_INLINE_VISIBILITY
- weak_ptr<_Tp> weak_from_this() _NOEXCEPT
- { return __weak_this_; }
-
- _LIBCPP_INLINE_VISIBILITY
- weak_ptr<const _Tp> weak_from_this() const _NOEXCEPT
- { return __weak_this_; }
-#endif // _LIBCPP_STD_VER > 14
-
- template <class _Up> friend class shared_ptr;
-};
-
-template <class _Tp>
-struct _LIBCPP_TEMPLATE_VIS hash<shared_ptr<_Tp> >
-{
- typedef shared_ptr<_Tp> argument_type;
- typedef size_t result_type;
-
- _LIBCPP_INLINE_VISIBILITY
- result_type operator()(const argument_type& __ptr) const _NOEXCEPT
- {
- return hash<typename shared_ptr<_Tp>::element_type*>()(__ptr.get());
- }
-};
-
-template<class _CharT, class _Traits, class _Yp>
-inline _LIBCPP_INLINE_VISIBILITY
-basic_ostream<_CharT, _Traits>&
-operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Yp> const& __p);
-
-
-#if !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
-
-class _LIBCPP_TYPE_VIS __sp_mut
-{
- void* __lx;
-public:
- void lock() _NOEXCEPT;
- void unlock() _NOEXCEPT;
-
-private:
- _LIBCPP_CONSTEXPR __sp_mut(void*) _NOEXCEPT;
- __sp_mut(const __sp_mut&);
- __sp_mut& operator=(const __sp_mut&);
-
- friend _LIBCPP_FUNC_VIS __sp_mut& __get_sp_mut(const void*);
-};
-
-_LIBCPP_FUNC_VIS _LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-__sp_mut& __get_sp_mut(const void*);
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-bool
-atomic_is_lock_free(const shared_ptr<_Tp>*)
-{
- return false;
-}
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-shared_ptr<_Tp>
-atomic_load(const shared_ptr<_Tp>* __p)
-{
- __sp_mut& __m = __get_sp_mut(__p);
- __m.lock();
- shared_ptr<_Tp> __q = *__p;
- __m.unlock();
- return __q;
-}
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-shared_ptr<_Tp>
-atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order)
-{
- return atomic_load(__p);
-}
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-void
-atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
-{
- __sp_mut& __m = __get_sp_mut(__p);
- __m.lock();
- __p->swap(__r);
- __m.unlock();
-}
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-void
-atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
-{
- atomic_store(__p, __r);
-}
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-shared_ptr<_Tp>
-atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r)
-{
- __sp_mut& __m = __get_sp_mut(__p);
- __m.lock();
- __p->swap(__r);
- __m.unlock();
- return __r;
-}
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-shared_ptr<_Tp>
-atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order)
-{
- return atomic_exchange(__p, __r);
-}
-
-template <class _Tp>
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-bool
-atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
-{
- shared_ptr<_Tp> __temp;
- __sp_mut& __m = __get_sp_mut(__p);
- __m.lock();
- if (__p->__owner_equivalent(*__v))
- {
- _VSTD::swap(__temp, *__p);
- *__p = __w;
- __m.unlock();
- return true;
- }
- _VSTD::swap(__temp, *__v);
- *__v = *__p;
- __m.unlock();
- return false;
-}
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-bool
-atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w)
-{
- return atomic_compare_exchange_strong(__p, __v, __w);
-}
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-bool
-atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
- shared_ptr<_Tp> __w, memory_order, memory_order)
-{
- return atomic_compare_exchange_strong(__p, __v, __w);
-}
-
-template <class _Tp>
-inline _LIBCPP_INLINE_VISIBILITY
-_LIBCPP_AVAILABILITY_ATOMIC_SHARED_PTR
-bool
-atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v,
- shared_ptr<_Tp> __w, memory_order, memory_order)
-{
- return atomic_compare_exchange_weak(__p, __v, __w);
-}
-
-#endif // !defined(_LIBCPP_HAS_NO_ATOMIC_HEADER)
-
//enum class
#if defined(_LIBCPP_ABI_POINTER_SAFETY_ENUM_TYPE)
# ifndef _LIBCPP_CXX03_LANG
diff --git a/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp b/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp
index e5b29e0..ab77958 100644
--- a/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp
+++ b/test/libcxx/utilities/memory/util.smartptr/util.smartptr.shared/function_type_default_deleter.fail.cpp
@@ -8,6 +8,9 @@
// UNSUPPORTED: c++03
+// Clang doesn't support filename wildcards in verify tests until 05eedf1f5b44.
+// UNSUPPORTED: clang-10
+
#include <memory>
template <int> struct Tag {};
@@ -45,7 +48,7 @@
SPtr<3> s3(nullptr, Deleter{}); // OK
}
- // expected-error-re@memory:* {{static_assert failed{{.*}} "default_delete cannot be instantiated for function types"}}
+ // expected-error-re@*:* {{static_assert failed{{.*}} "default_delete cannot be instantiated for function types"}}
std::default_delete<FnType<5>> deleter{}; // expected-note {{requested here}}
return 0;
diff --git a/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_arrow.fail.cpp b/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_arrow.fail.cpp
index e096811..e14b67b 100644
--- a/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_arrow.fail.cpp
+++ b/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_arrow.fail.cpp
@@ -10,6 +10,9 @@
// UNSUPPORTED: c++03, c++11, c++14
+// Clang doesn't support filename wildcards in verify tests until 05eedf1f5b44.
+// UNSUPPORTED: clang-10
+
// shared_ptr
// element_type& operator[](ptrdiff_t i) const;
@@ -27,10 +30,8 @@
// Check that we get a static assertion when we try to use the bracket
// operator on shared_ptr<T> when T is not an array type.
const std::shared_ptr<Foo[]> p1;
- (void)p1
- ->call(); // expected-error@memory:* {{std::shared_ptr<T>::operator-> is only valid when T is not an array type.}}
+ (void)p1->call(); // expected-error@*:* {{std::shared_ptr<T>::operator-> is only valid when T is not an array type.}}
const std::shared_ptr<Foo[4]> p2;
- (void)p2
- ->call(); // expected-error@memory:* {{std::shared_ptr<T>::operator-> is only valid when T is not an array type.}}
+ (void)p2->call(); // expected-error@*:* {{std::shared_ptr<T>::operator-> is only valid when T is not an array type.}}
return 0;
}
diff --git a/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.fail.cpp b/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.fail.cpp
index 67bb1e3..b8b23ad 100644
--- a/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.fail.cpp
+++ b/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.obs/op_bracket.fail.cpp
@@ -10,6 +10,9 @@
// UNSUPPORTED: c++03, c++11, c++14
+// Clang doesn't support filename wildcards in verify tests until 05eedf1f5b44.
+// UNSUPPORTED: clang-10
+
// shared_ptr
// element_type& operator[](ptrdiff_t i) const;
@@ -23,7 +26,6 @@
// Check that we get a static assertion when we try to use the bracket
// operator on shared_ptr<T> when T is not an array type.
const std::shared_ptr<int> p;
- (void)p
- [0]; // expected-error@memory:* {{std::shared_ptr<T>::operator[] is only valid when T is an array type.}}
+ (void)p[0]; // expected-error@*:* {{std::shared_ptr<T>::operator[] is only valid when T is an array type.}}
return 0;
}
