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1// -*- C++ -*-
2//===--------------------------- stddef.h ---------------------------------===//
3//
4// The LLVM Compiler Infrastructure
5//
6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10
11#if defined(__need_ptrdiff_t) || defined(__need_size_t) || \
12 defined(__need_wchar_t) || defined(__need_NULL) || defined(__need_wint_t)
13
14#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
15#pragma GCC system_header
16#endif
17
18#include_next <stddef.h>
19
20#elif !defined(_LIBCPP_STDDEF_H)
21#define _LIBCPP_STDDEF_H
22
23/*
24 stddef.h synopsis
25
26Macros:
27
28 offsetof(type,member-designator)
29 NULL
30
31Types:
32
33 ptrdiff_t
34 size_t
35 max_align_t
36 nullptr_t
37
38*/
39
40#include <__config>
41
42#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
43#pragma GCC system_header
44#endif
45
46#include_next <stddef.h>
47
48#ifdef __cplusplus
49
50extern "C++" {
51#include <__nullptr>
52using std::nullptr_t;
53}
54
55// Re-use the compiler's <stddef.h> max_align_t where possible.
56#if !defined(__CLANG_MAX_ALIGN_T_DEFINED) && !defined(_GCC_MAX_ALIGN_T) && \
57 !defined(__DEFINED_max_align_t)
58typedef long double max_align_t;
59#endif
60
61#endif
62
63#endif // _LIBCPP_STDDEF_H