1// -*- C++ -*-
 2//===----------------------------------------------------------------------===//
 3//
 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 5// See https://llvm.org/LICENSE.txt for license information.
 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 7//
 8//===----------------------------------------------------------------------===//
 9
10/*
11    stddef.h synopsis
12
13Macros:
14
15    offsetof(type,member-designator)
16    NULL
17
18Types:
19
20    ptrdiff_t
21    size_t
22    max_align_t // C++11
23    nullptr_t
24
25*/
26
27#if defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
28#  include <__cxx03/stddef.h>
29#else
30#  include <__config>
31
32#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
33#    pragma GCC system_header
34#  endif
35
36// Note: This include is outside of header guards because we sometimes get included multiple times
37//       with different defines and the underlying <stddef.h> will know how to deal with that.
38#  include_next <stddef.h>
39
40#  ifndef _LIBCPP_STDDEF_H
41#    define _LIBCPP_STDDEF_H
42
43#    ifdef __cplusplus
44typedef decltype(nullptr) nullptr_t;
45#    endif
46#  endif // defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
47
48#endif // _LIBCPP_STDDEF_H