mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-02 20:36:04 +00:00
e78f53d1e8
This reverts commit 68c04b0ae62d8431d72d8b47fc13008002ee4387. This disables the IWYU mapping that caused the failure, since the headers aren't reachable for now. This is the first part of the "Freezing C++03 headers" proposal explained in https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319/58. This patch mechanically copies the headers as of the LLVM 19.1 release into a subdirectory of libc++ so that we can start using these headers when building in C++03 mode. We are going to be backporting important changes to that copy of the headers until the LLVM 21 release. After the LLVM 21 release, only critical bugfixes will be fixed in the C++03 copy of the headers. This patch only performs a copy of the headers -- these headers are still unused by the rest of the codebase.
134 lines
4.0 KiB
C++
134 lines
4.0 KiB
C++
// -*- 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_CSTDDEF
|
|
#define _LIBCPP_CSTDDEF
|
|
|
|
/*
|
|
cstddef synopsis
|
|
|
|
Macros:
|
|
|
|
offsetof(type,member-designator)
|
|
NULL
|
|
|
|
namespace std
|
|
{
|
|
|
|
Types:
|
|
|
|
ptrdiff_t
|
|
size_t
|
|
max_align_t // C++11
|
|
nullptr_t
|
|
byte // C++17
|
|
|
|
} // std
|
|
|
|
*/
|
|
|
|
#include <__config>
|
|
#include <__type_traits/enable_if.h>
|
|
#include <__type_traits/integral_constant.h>
|
|
#include <__type_traits/is_integral.h>
|
|
#include <version>
|
|
|
|
#include <stddef.h>
|
|
|
|
#ifndef _LIBCPP_STDDEF_H
|
|
# error <cstddef> tried including <stddef.h> but didn't find libc++'s <stddef.h> header. \
|
|
This usually means that your header search paths are not configured properly. \
|
|
The header search paths should contain the C++ Standard Library headers before \
|
|
any C Standard Library, and you are probably using compiler flags that make that \
|
|
not be the case.
|
|
#endif
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
using ::nullptr_t;
|
|
using ::ptrdiff_t _LIBCPP_USING_IF_EXISTS;
|
|
using ::size_t _LIBCPP_USING_IF_EXISTS;
|
|
|
|
#if !defined(_LIBCPP_CXX03_LANG)
|
|
using ::max_align_t _LIBCPP_USING_IF_EXISTS;
|
|
#endif
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#if _LIBCPP_STD_VER >= 17
|
|
namespace std // purposefully not versioned
|
|
{
|
|
enum class byte : unsigned char {};
|
|
|
|
_LIBCPP_HIDE_FROM_ABI inline constexpr byte operator|(byte __lhs, byte __rhs) noexcept {
|
|
return static_cast<byte>(
|
|
static_cast<unsigned char>(static_cast<unsigned int>(__lhs) | static_cast<unsigned int>(__rhs)));
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI inline constexpr byte& operator|=(byte& __lhs, byte __rhs) noexcept {
|
|
return __lhs = __lhs | __rhs;
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI inline constexpr byte operator&(byte __lhs, byte __rhs) noexcept {
|
|
return static_cast<byte>(
|
|
static_cast<unsigned char>(static_cast<unsigned int>(__lhs) & static_cast<unsigned int>(__rhs)));
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI inline constexpr byte& operator&=(byte& __lhs, byte __rhs) noexcept {
|
|
return __lhs = __lhs & __rhs;
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI inline constexpr byte operator^(byte __lhs, byte __rhs) noexcept {
|
|
return static_cast<byte>(
|
|
static_cast<unsigned char>(static_cast<unsigned int>(__lhs) ^ static_cast<unsigned int>(__rhs)));
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI inline constexpr byte& operator^=(byte& __lhs, byte __rhs) noexcept {
|
|
return __lhs = __lhs ^ __rhs;
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI inline constexpr byte operator~(byte __b) noexcept {
|
|
return static_cast<byte>(static_cast<unsigned char>(~static_cast<unsigned int>(__b)));
|
|
}
|
|
|
|
template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>
|
|
_LIBCPP_HIDE_FROM_ABI constexpr byte& operator<<=(byte& __lhs, _Integer __shift) noexcept {
|
|
return __lhs = __lhs << __shift;
|
|
}
|
|
|
|
template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>
|
|
_LIBCPP_HIDE_FROM_ABI constexpr byte operator<<(byte __lhs, _Integer __shift) noexcept {
|
|
return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) << __shift));
|
|
}
|
|
|
|
template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>
|
|
_LIBCPP_HIDE_FROM_ABI constexpr byte& operator>>=(byte& __lhs, _Integer __shift) noexcept {
|
|
return __lhs = __lhs >> __shift;
|
|
}
|
|
|
|
template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>
|
|
_LIBCPP_HIDE_FROM_ABI constexpr byte operator>>(byte __lhs, _Integer __shift) noexcept {
|
|
return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) >> __shift));
|
|
}
|
|
|
|
template <class _Integer, __enable_if_t<is_integral<_Integer>::value, int> = 0>
|
|
[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Integer to_integer(byte __b) noexcept {
|
|
return static_cast<_Integer>(__b);
|
|
}
|
|
|
|
} // namespace std
|
|
|
|
#endif
|
|
|
|
#endif // _LIBCPP_CSTDDEF
|