include/new - third_party/libcxx - Git at Google


            
            // -*- C++ -*-

            
            //===----------------------------- new ------------------------------------===//

            
            //

            
            // 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_NEW

            
            #define _LIBCPP_NEW


            /*

            
                new synopsis


            namespace std

            
            {


            class bad_alloc

            
                : public exception

            
            {

            
            public:

            
                bad_alloc() noexcept;

            
                bad_alloc(const bad_alloc&) noexcept;

            
                bad_alloc& operator=(const bad_alloc&) noexcept;

            
                virtual const char* what() const noexcept;

            
            };


            class bad_array_new_length : public bad_alloc // C++14

            
            {

            
            public:

            
                bad_array_new_length() noexcept;

            
            };


            enum class align_val_t : size_t {}; // C++17


            struct destroying_delete_t { // C++20

            
              explicit destroying_delete_t() = default;

            
            };

            
            inline constexpr destroying_delete_t destroying_delete{}; // C++20


            struct nothrow_t { explicit nothrow_t() = default; };

            
            extern const nothrow_t nothrow;

            
            typedef void (*new_handler)();

            
            new_handler set_new_handler(new_handler new_p) noexcept;

            
            new_handler get_new_handler() noexcept;


            // 21.6.4, pointer optimization barrier

            
            template <class T> constexpr T* launder(T* p) noexcept; // C++17

            
            }  // std


            void* operator new(std::size_t size);                                   // replaceable, nodiscard in C++2a

            
            void* operator new(std::size_t size, std::align_val_t alignment);       // replaceable, C++17, nodiscard in C++2a

            
            void* operator new(std::size_t size, const std::nothrow_t&) noexcept;   // replaceable, nodiscard in C++2a

            
            void* operator new(std::size_t size, std::align_val_t alignment,

            
                               const std::nothrow_t&) noexcept;                     // replaceable, C++17, nodiscard in C++2a

            
            void  operator delete(void* ptr) noexcept;                              // replaceable

            
            void  operator delete(void* ptr, std::size_t size) noexcept;            // replaceable, C++14

            
            void  operator delete(void* ptr, std::align_val_t alignment) noexcept;  // replaceable, C++17

            
            void  operator delete(void* ptr, std::size_t size,

            
                                  std::align_val_t alignment) noexcept;             // replaceable, C++17

            
            void  operator delete(void* ptr, const std::nothrow_t&) noexcept;       // replaceable

            
            void  operator delete(void* ptr, std:align_val_t alignment,

            
                                  const std::nothrow_t&) noexcept;                  // replaceable, C++17


            void* operator new[](std::size_t size);                                 // replaceable, nodiscard in C++2a

            
            void* operator new[](std::size_t size,

            
                                 std::align_val_t alignment) noexcept;              // replaceable, C++17, nodiscard in C++2a

            
            void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable, nodiscard in C++2a

            
            void* operator new[](std::size_t size, std::align_val_t alignment,

            
                                 const std::nothrow_t&) noexcept;                   // replaceable, C++17, nodiscard in C++2a

            
            void  operator delete[](void* ptr) noexcept;                            // replaceable

            
            void  operator delete[](void* ptr, std::size_t size) noexcept;          // replaceable, C++14

            
            void  operator delete[](void* ptr,

            
                                    std::align_val_t alignment) noexcept;           // replaceable, C++17

            
            void  operator delete[](void* ptr, std::size_t size,

            
                                    std::align_val_t alignment) noexcept;           // replaceable, C++17

            
            void  operator delete[](void* ptr, const std::nothrow_t&) noexcept;     // replaceable

            
            void  operator delete[](void* ptr, std::align_val_t alignment,

            
                                    const std::nothrow_t&) noexcept;                // replaceable, C++17


            void* operator new  (std::size_t size, void* ptr) noexcept;             // nodiscard in C++2a

            
            void* operator new[](std::size_t size, void* ptr) noexcept;             // nodiscard in C++2a

            
            void  operator delete  (void* ptr, void*) noexcept;

            
            void  operator delete[](void* ptr, void*) noexcept;


            */


            #include <__config>

            
            #include <exception>

            
            #include <type_traits>

            
            #include <cstddef>

            
            #include <version>

            
            #ifdef _LIBCPP_NO_EXCEPTIONS

            
            #include <cstdlib>

            
            #endif


            #if defined(_LIBCPP_ABI_VCRUNTIME)

            
            #include <new.h>

            
            #endif


            #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)

            
            #pragma GCC system_header

            
            #endif


            #if !defined(__cpp_sized_deallocation) || __cpp_sized_deallocation  < 201309L

            
            #define _LIBCPP_HAS_NO_LANGUAGE_SIZED_DEALLOCATION

            
            #endif


            #if !defined(_LIBCPP_BUILDING_LIBRARY) && _LIBCPP_STD_VER < 14 && \

            
                defined(_LIBCPP_HAS_NO_LANGUAGE_SIZED_DEALLOCATION)

            
            # define _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION

            
            #endif


            #if defined(_LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION) || \

            
                defined(_LIBCPP_HAS_NO_LANGUAGE_SIZED_DEALLOCATION)

            
            # define _LIBCPP_HAS_NO_SIZED_DEALLOCATION

            
            #endif


            #if !__has_builtin(__builtin_operator_new) || \

            
               __has_builtin(__builtin_operator_new) < 201802L

            
            #define _LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE

            
            #endif


            namespace std  // purposefully not using versioning namespace

            
            {


            #if !defined(_LIBCPP_ABI_VCRUNTIME)

            
            struct _LIBCPP_TYPE_VIS nothrow_t { explicit nothrow_t() = default; };

            
            extern _LIBCPP_FUNC_VIS const nothrow_t nothrow;


            class _LIBCPP_EXCEPTION_ABI bad_alloc

            
                : public exception

            
            {

            
            public:

            
                bad_alloc() _NOEXCEPT;

            
                virtual ~bad_alloc() _NOEXCEPT;

            
                virtual const char* what() const _NOEXCEPT;

            
            };


            class _LIBCPP_EXCEPTION_ABI bad_array_new_length

            
                : public bad_alloc

            
            {

            
            public:

            
                bad_array_new_length() _NOEXCEPT;

            
                virtual ~bad_array_new_length() _NOEXCEPT;

            
                virtual const char* what() const _NOEXCEPT;

            
            };


            typedef void (*new_handler)();

            
            _LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT;

            
            _LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT;


            #endif // !_LIBCPP_ABI_VCRUNTIME


            _LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_bad_alloc();  // not in C++ spec


            #if !defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) && \

            
                !defined(_LIBCPP_ABI_VCRUNTIME)

            
            #ifndef _LIBCPP_CXX03_LANG

            
            enum class _LIBCPP_ENUM_VIS align_val_t : size_t { };

            
            #else

            
            enum align_val_t { __zero = 0, __max = (size_t)-1 };

            
            #endif

            
            #endif


            #if _LIBCPP_STD_VER > 17

            
            // Enable the declaration even if the compiler doesn't support the language

            
            // feature.

            
            struct destroying_delete_t {

            
              explicit destroying_delete_t() = default;

            
            };

            
            _LIBCPP_INLINE_VAR constexpr destroying_delete_t destroying_delete{};

            
            #endif // _LIBCPP_STD_VER > 17


            }  // std


            #if defined(_LIBCPP_CXX03_LANG)

            
            #define _THROW_BAD_ALLOC throw(std::bad_alloc)

            
            #else

            
            #define _THROW_BAD_ALLOC

            
            #endif


            #if !defined(_LIBCPP_ABI_VCRUNTIME)


            _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz) _THROW_BAD_ALLOC;

            
            _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _LIBCPP_NOALIAS;

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p) _NOEXCEPT;

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;

            
            #ifndef _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete(void* __p, std::size_t __sz) _NOEXCEPT;

            
            #endif


            _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz) _THROW_BAD_ALLOC;

            
            _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _LIBCPP_NOALIAS;

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete[](void* __p) _NOEXCEPT;

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;

            
            #ifndef _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete[](void* __p, std::size_t __sz) _NOEXCEPT;

            
            #endif


            #ifndef _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION

            
            _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t) _THROW_BAD_ALLOC;

            
            _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t, const std::nothrow_t&) _NOEXCEPT _LIBCPP_NOALIAS;

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, std::align_val_t) _NOEXCEPT;

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete(void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT;

            
            #ifndef _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete(void* __p, std::size_t __sz, std::align_val_t) _NOEXCEPT;

            
            #endif


            _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t) _THROW_BAD_ALLOC;

            
            _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t, const std::nothrow_t&) _NOEXCEPT _LIBCPP_NOALIAS;

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete[](void* __p, std::align_val_t) _NOEXCEPT;

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS void  operator delete[](void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT;

            
            #ifndef _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION

            
            _LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void  operator delete[](void* __p, std::size_t __sz, std::align_val_t) _NOEXCEPT;

            
            #endif

            
            #endif


            _LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY void* operator new  (std::size_t, void* __p) _NOEXCEPT {return __p;}

            
            _LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;}

            
            inline _LIBCPP_INLINE_VISIBILITY void  operator delete  (void*, void*) _NOEXCEPT {}

            
            inline _LIBCPP_INLINE_VISIBILITY void  operator delete[](void*, void*) _NOEXCEPT {}


            #endif // !_LIBCPP_ABI_VCRUNTIME


            _LIBCPP_BEGIN_NAMESPACE_STD


            _LIBCPP_CONSTEXPR inline _LIBCPP_INLINE_VISIBILITY bool __is_overaligned_for_new(size_t __align) _NOEXCEPT {

            
            #ifdef __STDCPP_DEFAULT_NEW_ALIGNMENT__

            
              return __align > __STDCPP_DEFAULT_NEW_ALIGNMENT__;

            
            #else

            
              return __align > alignment_of<max_align_t>::value;

            
            #endif

            
            }


            inline _LIBCPP_INLINE_VISIBILITY void *__libcpp_allocate(size_t __size, size_t __align) {

            
            #ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION

            
              if (__is_overaligned_for_new(__align)) {

            
                const align_val_t __align_val = static_cast<align_val_t>(__align);

            
            # ifdef _LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE

            
                return ::operator new(__size, __align_val);

            
            # else

            
                return __builtin_operator_new(__size, __align_val);

            
            # endif

            
              }

            
            #else

            
              ((void)__align);

            
            #endif

            
            #ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE

            
              return ::operator new(__size);

            
            #else

            
              return __builtin_operator_new(__size);

            
            #endif

            
            }


            struct _DeallocateCaller {

            
              static inline _LIBCPP_INLINE_VISIBILITY

            
              void __do_deallocate_handle_size_align(void *__ptr, size_t __size, size_t __align) {

            
            #if defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)

            
                ((void)__align);

            
                return __do_deallocate_handle_size(__ptr, __size);

            
            #else

            
                if (__is_overaligned_for_new(__align)) {

            
                  const align_val_t __align_val = static_cast<align_val_t>(__align);

            
                  return __do_deallocate_handle_size(__ptr, __size, __align_val);

            
                } else {

            
                  return __do_deallocate_handle_size(__ptr, __size);

            
                }

            
            #endif

            
              }


              static inline _LIBCPP_INLINE_VISIBILITY

            
              void __do_deallocate_handle_align(void *__ptr, size_t __align) {

            
            #if defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)

            
                ((void)__align);

            
                return __do_call(__ptr);

            
            #else

            
                if (__is_overaligned_for_new(__align)) {

            
                  const align_val_t __align_val = static_cast<align_val_t>(__align);

            
                  return __do_call(__ptr, __align_val);

            
                } else {

            
                  return __do_call(__ptr);

            
                }

            
            #endif

            
              }


             private:

            
              static inline void __do_deallocate_handle_size(void *__ptr, size_t __size) {

            
            #ifdef _LIBCPP_HAS_NO_SIZED_DEALLOCATION

            
                ((void)__size);

            
                return __do_call(__ptr);

            
            #else

            
                return __do_call(__ptr, __size);

            
            #endif

            
              }


            #ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION

            
              static inline void __do_deallocate_handle_size(void *__ptr, size_t __size, align_val_t __align) {

            
            #ifdef _LIBCPP_HAS_NO_SIZED_DEALLOCATION

            
                ((void)__size);

            
                return __do_call(__ptr, __align);

            
            #else

            
                return __do_call(__ptr, __size, __align);

            
            #endif

            
              }

            
            #endif


            private:

            
              template <class _A1, class _A2>

            
              static inline void __do_call(void *__ptr, _A1 __a1, _A2 __a2) {

            
            #if defined(_LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE) || \

            
                defined(_LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE)

            
                return ::operator delete(__ptr, __a1, __a2);

            
            #else

            
                return __builtin_operator_delete(__ptr, __a1, __a2);

            
            #endif

            
              }


              template <class _A1>

            
              static inline void __do_call(void *__ptr, _A1 __a1) {

            
            #if defined(_LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE) || \

            
                defined(_LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE)

            
                return ::operator delete(__ptr, __a1);

            
            #else

            
                return __builtin_operator_delete(__ptr, __a1);

            
            #endif

            
              }


              static inline void __do_call(void *__ptr) {

            
            #ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE

            
                return ::operator delete(__ptr);

            
            #else

            
                return __builtin_operator_delete(__ptr);

            
            #endif

            
              }

            
            };


            inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate(void* __ptr, size_t __size, size_t __align) {

            
              _DeallocateCaller::__do_deallocate_handle_size_align(__ptr, __size, __align);

            
            }


            inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate_unsized(void* __ptr, size_t __align) {

            
              _DeallocateCaller::__do_deallocate_handle_align(__ptr, __align);

            
            }


            template <class _Tp>

            
            _LIBCPP_NODISCARD_AFTER_CXX17 inline

            
            _LIBCPP_CONSTEXPR _Tp* __launder(_Tp* __p) _NOEXCEPT

            
            {

            
                static_assert (!(is_function<_Tp>::value), "can't launder functions" );

            
                static_assert (!(is_same<void, typename remove_cv<_Tp>::type>::value), "can't launder cv-void" );

            
            #ifdef _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER

            
                return __builtin_launder(__p);

            
            #else

            
                return __p;

            
            #endif

            
            }


            #if _LIBCPP_STD_VER > 14

            
            template <class _Tp>

            
            _LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY

            
            constexpr _Tp* launder(_Tp* __p) noexcept

            
            {

            
                return _VSTD::__launder(__p);

            
            }

            
            #endif


            _LIBCPP_END_NAMESPACE_STD


            #endif  // _LIBCPP_NEW
	// -- C++ --
	//===----------------------------- new ------------------------------------===//
	//
	// 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_NEW
	#define _LIBCPP_NEW

	/*
	new synopsis

	namespace std
	{

	class bad_alloc
	: public exception
	{
	public:
	bad_alloc() noexcept;
	bad_alloc(const bad_alloc&) noexcept;
	bad_alloc& operator=(const bad_alloc&) noexcept;
	virtual const char* what() const noexcept;
	};

	class bad_array_new_length : public bad_alloc // C++14
	{
	public:
	bad_array_new_length() noexcept;
	};

	enum class align_val_t : size_t {}; // C++17

	struct destroying_delete_t { // C++20
	explicit destroying_delete_t() = default;
	};
	inline constexpr destroying_delete_t destroying_delete{}; // C++20

	struct nothrow_t { explicit nothrow_t() = default; };
	extern const nothrow_t nothrow;
	typedef void (*new_handler)();
	new_handler set_new_handler(new_handler new_p) noexcept;
	new_handler get_new_handler() noexcept;

	// 21.6.4, pointer optimization barrier
	template <class T> constexpr T* launder(T* p) noexcept; // C++17
	} // std

	void* operator new(std::size_t size); // replaceable, nodiscard in C++2a
	void* operator new(std::size_t size, std::align_val_t alignment); // replaceable, C++17, nodiscard in C++2a
	void* operator new(std::size_t size, const std::nothrow_t&) noexcept; // replaceable, nodiscard in C++2a
	void* operator new(std::size_t size, std::align_val_t alignment,
	const std::nothrow_t&) noexcept; // replaceable, C++17, nodiscard in C++2a
	void operator delete(void* ptr) noexcept; // replaceable
	void operator delete(void* ptr, std::size_t size) noexcept; // replaceable, C++14
	void operator delete(void* ptr, std::align_val_t alignment) noexcept; // replaceable, C++17
	void operator delete(void* ptr, std::size_t size,
	std::align_val_t alignment) noexcept; // replaceable, C++17
	void operator delete(void* ptr, const std::nothrow_t&) noexcept; // replaceable
	void operator delete(void* ptr, std:align_val_t alignment,
	const std::nothrow_t&) noexcept; // replaceable, C++17

	void* operator new[](std::size_t size); // replaceable, nodiscard in C++2a
	void* operator new[](std::size_t size,
	std::align_val_t alignment) noexcept; // replaceable, C++17, nodiscard in C++2a
	void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable, nodiscard in C++2a
	void* operator new[](std::size_t size, std::align_val_t alignment,
	const std::nothrow_t&) noexcept; // replaceable, C++17, nodiscard in C++2a
	void operator delete[](void* ptr) noexcept; // replaceable
	void operator delete[](void* ptr, std::size_t size) noexcept; // replaceable, C++14
	void operator delete[](void* ptr,
	std::align_val_t alignment) noexcept; // replaceable, C++17
	void operator delete[](void* ptr, std::size_t size,
	std::align_val_t alignment) noexcept; // replaceable, C++17
	void operator delete[](void* ptr, const std::nothrow_t&) noexcept; // replaceable
	void operator delete[](void* ptr, std::align_val_t alignment,
	const std::nothrow_t&) noexcept; // replaceable, C++17

	void* operator new (std::size_t size, void* ptr) noexcept; // nodiscard in C++2a
	void* operator new[](std::size_t size, void* ptr) noexcept; // nodiscard in C++2a
	void operator delete (void* ptr, void*) noexcept;
	void operator delete[](void* ptr, void*) noexcept;

	*/

	#include <__config>
	#include <exception>
	#include <type_traits>
	#include <cstddef>
	#include <version>
	#ifdef _LIBCPP_NO_EXCEPTIONS
	#include <cstdlib>
	#endif

	#if defined(_LIBCPP_ABI_VCRUNTIME)
	#include <new.h>
	#endif

	#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
	#pragma GCC system_header
	#endif

	#if !defined(__cpp_sized_deallocation) \|\| __cpp_sized_deallocation < 201309L
	#define _LIBCPP_HAS_NO_LANGUAGE_SIZED_DEALLOCATION
	#endif

	#if !defined(_LIBCPP_BUILDING_LIBRARY) && _LIBCPP_STD_VER < 14 && \
	defined(_LIBCPP_HAS_NO_LANGUAGE_SIZED_DEALLOCATION)
	# define _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION
	#endif

	#if defined(_LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION) \|\| \
	defined(_LIBCPP_HAS_NO_LANGUAGE_SIZED_DEALLOCATION)
	# define _LIBCPP_HAS_NO_SIZED_DEALLOCATION
	#endif

	#if !__has_builtin(__builtin_operator_new) \|\| \
	__has_builtin(__builtin_operator_new) < 201802L
	#define _LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE
	#endif

	namespace std // purposefully not using versioning namespace
	{

	#if !defined(_LIBCPP_ABI_VCRUNTIME)
	struct _LIBCPP_TYPE_VIS nothrow_t { explicit nothrow_t() = default; };
	extern _LIBCPP_FUNC_VIS const nothrow_t nothrow;

	class _LIBCPP_EXCEPTION_ABI bad_alloc
	: public exception
	{
	public:
	bad_alloc() _NOEXCEPT;
	virtual ~bad_alloc() _NOEXCEPT;
	virtual const char* what() const _NOEXCEPT;
	};

	class _LIBCPP_EXCEPTION_ABI bad_array_new_length
	: public bad_alloc
	{
	public:
	bad_array_new_length() _NOEXCEPT;
	virtual ~bad_array_new_length() _NOEXCEPT;
	virtual const char* what() const _NOEXCEPT;
	};

	typedef void (*new_handler)();
	_LIBCPP_FUNC_VIS new_handler set_new_handler(new_handler) _NOEXCEPT;
	_LIBCPP_FUNC_VIS new_handler get_new_handler() _NOEXCEPT;

	#endif // !_LIBCPP_ABI_VCRUNTIME

	_LIBCPP_NORETURN _LIBCPP_FUNC_VIS void __throw_bad_alloc(); // not in C++ spec

	#if !defined(_LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION) && \
	!defined(_LIBCPP_ABI_VCRUNTIME)
	#ifndef _LIBCPP_CXX03_LANG
	enum class _LIBCPP_ENUM_VIS align_val_t : size_t { };
	#else
	enum align_val_t { __zero = 0, __max = (size_t)-1 };
	#endif
	#endif

	#if _LIBCPP_STD_VER > 17
	// Enable the declaration even if the compiler doesn't support the language
	// feature.
	struct destroying_delete_t {
	explicit destroying_delete_t() = default;
	};
	_LIBCPP_INLINE_VAR constexpr destroying_delete_t destroying_delete{};
	#endif // _LIBCPP_STD_VER > 17

	} // std

	#if defined(_LIBCPP_CXX03_LANG)
	#define _THROW_BAD_ALLOC throw(std::bad_alloc)
	#else
	#define _THROW_BAD_ALLOC
	#endif

	#if !defined(_LIBCPP_ABI_VCRUNTIME)

	_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz) _THROW_BAD_ALLOC;
	_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _LIBCPP_NOALIAS;
	_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p) _NOEXCEPT;
	_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
	#ifndef _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION
	_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void operator delete(void* __p, std::size_t __sz) _NOEXCEPT;
	#endif

	_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz) _THROW_BAD_ALLOC;
	_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _LIBCPP_NOALIAS;
	_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p) _NOEXCEPT;
	_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;
	#ifndef _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION
	_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void operator delete[](void* __p, std::size_t __sz) _NOEXCEPT;
	#endif

	#ifndef _LIBCPP_HAS_NO_LIBRARY_ALIGNED_ALLOCATION
	_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t) _THROW_BAD_ALLOC;
	_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new(std::size_t __sz, std::align_val_t, const std::nothrow_t&) _NOEXCEPT _LIBCPP_NOALIAS;
	_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::align_val_t) _NOEXCEPT;
	_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete(void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT;
	#ifndef _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION
	_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void operator delete(void* __p, std::size_t __sz, std::align_val_t) _NOEXCEPT;
	#endif

	_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t) _THROW_BAD_ALLOC;
	_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_OVERRIDABLE_FUNC_VIS void* operator new[](std::size_t __sz, std::align_val_t, const std::nothrow_t&) _NOEXCEPT _LIBCPP_NOALIAS;
	_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::align_val_t) _NOEXCEPT;
	_LIBCPP_OVERRIDABLE_FUNC_VIS void operator delete[](void* __p, std::align_val_t, const std::nothrow_t&) _NOEXCEPT;
	#ifndef _LIBCPP_HAS_NO_LIBRARY_SIZED_DEALLOCATION
	_LIBCPP_OVERRIDABLE_FUNC_VIS _LIBCPP_AVAILABILITY_SIZED_NEW_DELETE void operator delete[](void* __p, std::size_t __sz, std::align_val_t) _NOEXCEPT;
	#endif
	#endif

	_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY void* operator new (std::size_t, void* __p) _NOEXCEPT {return __p;}
	_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY void* operator new[](std::size_t, void* __p) _NOEXCEPT {return __p;}
	inline _LIBCPP_INLINE_VISIBILITY void operator delete (void, void) _NOEXCEPT {}
	inline _LIBCPP_INLINE_VISIBILITY void operator delete[](void, void) _NOEXCEPT {}

	#endif // !_LIBCPP_ABI_VCRUNTIME

	_LIBCPP_BEGIN_NAMESPACE_STD

	_LIBCPP_CONSTEXPR inline _LIBCPP_INLINE_VISIBILITY bool __is_overaligned_for_new(size_t __align) _NOEXCEPT {
	#ifdef __STDCPP_DEFAULT_NEW_ALIGNMENT__
	return __align > __STDCPP_DEFAULT_NEW_ALIGNMENT__;
	#else
	return __align > alignment_of<max_align_t>::value;
	#endif
	}

	inline _LIBCPP_INLINE_VISIBILITY void *__libcpp_allocate(size_t __size, size_t __align) {
	#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
	if (__is_overaligned_for_new(__align)) {
	const align_val_t __align_val = static_cast<align_val_t>(__align);
	# ifdef _LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE
	return ::operator new(__size, __align_val);
	# else
	return __builtin_operator_new(__size, __align_val);
	# endif
	}
	#else
	((void)__align);
	#endif
	#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
	return ::operator new(__size);
	#else
	return __builtin_operator_new(__size);
	#endif
	}

	struct _DeallocateCaller {
	static inline _LIBCPP_INLINE_VISIBILITY
	void __do_deallocate_handle_size_align(void *__ptr, size_t __size, size_t __align) {
	#if defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)
	((void)__align);
	return __do_deallocate_handle_size(__ptr, __size);
	#else
	if (__is_overaligned_for_new(__align)) {
	const align_val_t __align_val = static_cast<align_val_t>(__align);
	return __do_deallocate_handle_size(__ptr, __size, __align_val);
	} else {
	return __do_deallocate_handle_size(__ptr, __size);
	}
	#endif
	}

	static inline _LIBCPP_INLINE_VISIBILITY
	void __do_deallocate_handle_align(void *__ptr, size_t __align) {
	#if defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)
	((void)__align);
	return __do_call(__ptr);
	#else
	if (__is_overaligned_for_new(__align)) {
	const align_val_t __align_val = static_cast<align_val_t>(__align);
	return __do_call(__ptr, __align_val);
	} else {
	return __do_call(__ptr);
	}
	#endif
	}

	private:
	static inline void __do_deallocate_handle_size(void *__ptr, size_t __size) {
	#ifdef _LIBCPP_HAS_NO_SIZED_DEALLOCATION
	((void)__size);
	return __do_call(__ptr);
	#else
	return __do_call(__ptr, __size);
	#endif
	}

	#ifndef _LIBCPP_HAS_NO_ALIGNED_ALLOCATION
	static inline void __do_deallocate_handle_size(void *__ptr, size_t __size, align_val_t __align) {
	#ifdef _LIBCPP_HAS_NO_SIZED_DEALLOCATION
	((void)__size);
	return __do_call(__ptr, __align);
	#else
	return __do_call(__ptr, __size, __align);
	#endif
	}
	#endif

	private:
	template <class _A1, class _A2>
	static inline void __do_call(void *__ptr, _A1 __a1, _A2 __a2) {
	#if defined(_LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE) \|\| \
	defined(_LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE)
	return ::operator delete(__ptr, __a1, __a2);
	#else
	return __builtin_operator_delete(__ptr, __a1, __a2);
	#endif
	}

	template <class _A1>
	static inline void __do_call(void *__ptr, _A1 __a1) {
	#if defined(_LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE) \|\| \
	defined(_LIBCPP_HAS_NO_BUILTIN_OVERLOADED_OPERATOR_NEW_DELETE)
	return ::operator delete(__ptr, __a1);
	#else
	return __builtin_operator_delete(__ptr, __a1);
	#endif
	}

	static inline void __do_call(void *__ptr) {
	#ifdef _LIBCPP_HAS_NO_BUILTIN_OPERATOR_NEW_DELETE
	return ::operator delete(__ptr);
	#else
	return __builtin_operator_delete(__ptr);
	#endif
	}
	};

	inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate(void* __ptr, size_t __size, size_t __align) {
	_DeallocateCaller::__do_deallocate_handle_size_align(__ptr, __size, __align);
	}

	inline _LIBCPP_INLINE_VISIBILITY void __libcpp_deallocate_unsized(void* __ptr, size_t __align) {
	_DeallocateCaller::__do_deallocate_handle_align(__ptr, __align);
	}

	template <class _Tp>
	_LIBCPP_NODISCARD_AFTER_CXX17 inline
	_LIBCPP_CONSTEXPR _Tp* __launder(_Tp* __p) _NOEXCEPT
	{
	static_assert (!(is_function<_Tp>::value), "can't launder functions" );
	static_assert (!(is_same<void, typename remove_cv<_Tp>::type>::value), "can't launder cv-void" );
	#ifdef _LIBCPP_COMPILER_HAS_BUILTIN_LAUNDER
	return __builtin_launder(__p);
	#else
	return __p;
	#endif
	}


	#if _LIBCPP_STD_VER > 14
	template <class _Tp>
	_LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY
	constexpr _Tp* launder(_Tp* __p) noexcept
	{
	return _VSTD::__launder(__p);
	}
	#endif

	_LIBCPP_END_NAMESPACE_STD

	#endif // _LIBCPP_NEW