llvm-project/libcxx/include/new

// -*- 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_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> [[nodiscard]] constexpr T* launder(T* p) noexcept;   // C++17, nodiscard since C++20
}  // std

void* operator new(std::size_t size);                                   // replaceable, nodiscard in C++20
void* operator new(std::size_t size, std::align_val_t alignment);       // replaceable, C++17, nodiscard in C++20
void* operator new(std::size_t size, const std::nothrow_t&) noexcept;   // replaceable, nodiscard in C++20
void* operator new(std::size_t size, std::align_val_t alignment,
                   const std::nothrow_t&) noexcept;                     // replaceable, C++17, nodiscard in C++20
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++20
void* operator new[](std::size_t size,
                     std::align_val_t alignment) noexcept;              // replaceable, C++17, nodiscard in C++20
void* operator new[](std::size_t size, const std::nothrow_t&) noexcept; // replaceable, nodiscard in C++20
void* operator new[](std::size_t size, std::align_val_t alignment,
                     const std::nothrow_t&) noexcept;                   // replaceable, C++17, nodiscard in C++20
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++20, constexpr since C++26
void* operator new[](std::size_t size, void* ptr) noexcept;             // nodiscard in C++20, constexpr since C++26
void  operator delete  (void* ptr, void*) noexcept;
void  operator delete[](void* ptr, void*) noexcept;

*/

#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#  include <__cxx03/new>
#else
#  include <__config>
#  include <__new/align_val_t.h>
#  include <__new/allocate.h>
#  include <__new/exceptions.h>
#  include <__new/global_new_delete.h>
#  include <__new/new_handler.h>
#  include <__new/nothrow_t.h>
#  include <__new/placement_new_delete.h>

#  if _LIBCPP_STD_VER >= 17
#    include <__new/interference_size.h>
#    include <__new/launder.h>
#  endif

#  if _LIBCPP_STD_VER >= 20
#    include <__new/destroying_delete_t.h>
#  endif

// feature-test macros
#  include <version>

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

#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
#    include <cstddef>
#    include <cstdlib>
#    include <type_traits>
#  endif
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_NEW