1// -*- C++ -*-
2//===--------------------------- cstddef ----------------------------------===//
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#ifndef _LIBCPP_CSTDDEF
12#define _LIBCPP_CSTDDEF
13
14/*
15 cstddef synopsis
16
17Macros:
18
19 offsetof(type,member-designator)
20 NULL
21
22namespace std
23{
24
25Types:
26
27 ptrdiff_t
28 size_t
29 max_align_t
30 nullptr_t
31
32} // std
33
34*/
35
36#include <__config>
37
38#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
39#pragma GCC system_header
40#endif
41
42// Don't include our own <stddef.h>; we don't want to declare ::nullptr_t.
43#include_next <stddef.h>
44#include <__nullptr>
45
46_LIBCPP_BEGIN_NAMESPACE_STD
47
48using ::ptrdiff_t;
49using ::size_t;
50
51#if defined(__CLANG_MAX_ALIGN_T_DEFINED) || defined(_GCC_MAX_ALIGN_T)
52// Re-use the compiler's <stddef.h> max_align_t where possible.
53using ::max_align_t;
54#else
55typedef long double max_align_t;
56#endif
57
58_LIBCPP_END_NAMESPACE_STD
59
60#endif // _LIBCPP_CSTDDEF
61