blob: dc86fe9e8ef1c363e056e364fba5bbfdfbb13df9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2014-2016 PALO, Richard.
*/
#ifndef _SYS_NULL_H
#define _SYS_NULL_H
#include <sys/feature_tests.h>
#ifndef NULL
#if defined(__sparc)
/*
* SPARC code is not yet NULL pointer clean.
*/
/*
* POSIX.1-2008 requires that the NULL macro be cast to type void *.
* Historically, this has not been done, so we only enable this in a
* POSIX.1-2008 compilation environment.
*/
#if defined(_XPG7) && !defined(__cplusplus)
#define NULL ((void *)0)
#else
/*
* ISO C++ requires that the NULL macro be a constant integral type evaluating
* to zero until C++11, and an integer or pointer literal with value zero from
* C++11 onwards.
*/
#if defined(__cplusplus) && __cplusplus >= 201103L
#define NULL nullptr
#else
#if defined(_LP64)
#define NULL 0L
#else
#define NULL 0
#endif /* _LP64 */
#endif /* C++11 */
#endif /* _XPG7 */
#else
/*
* POSIX.1-2008 requires that the NULL macro be cast to type void *.
*/
#if !defined(__cplusplus)
#define NULL ((void *)0)
#else
/*
* ISO C++ requires that the NULL macro be a constant integral type evaluating
* to zero until C++11, and an integer or pointer literal with value zero from
* C++11 onwards.
*/
#if __cplusplus >= 201103L
#define NULL nullptr
#else
#if defined(_LP64)
#define NULL 0L
#else
#define NULL 0
#endif /* _LP64 */
#endif /* C++11 */
#endif /* !__cplusplus */
#endif /* __sparc */
#endif /* NULL */
#endif /* _SYS_NULL_H */
|
