|
150
|
1 /*===---- stddef.h - Basic type definitions --------------------------------===
|
|
|
2 *
|
|
|
3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
|
4 * See https://llvm.org/LICENSE.txt for license information.
|
|
|
5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
6 *
|
|
|
7 *===-----------------------------------------------------------------------===
|
|
|
8 */
|
|
|
9
|
|
|
10 #if !defined(__STDDEF_H) || defined(__need_ptrdiff_t) || \
|
|
|
11 defined(__need_size_t) || defined(__need_wchar_t) || \
|
|
|
12 defined(__need_NULL) || defined(__need_wint_t)
|
|
|
13
|
|
|
14 #if !defined(__need_ptrdiff_t) && !defined(__need_size_t) && \
|
|
|
15 !defined(__need_wchar_t) && !defined(__need_NULL) && \
|
|
|
16 !defined(__need_wint_t)
|
|
|
17 /* Always define miscellaneous pieces when modules are available. */
|
|
|
18 #if !__has_feature(modules)
|
|
|
19 #define __STDDEF_H
|
|
|
20 #endif
|
|
|
21 #define __need_ptrdiff_t
|
|
|
22 #define __need_size_t
|
|
|
23 #define __need_wchar_t
|
|
|
24 #define __need_NULL
|
|
|
25 #define __need_STDDEF_H_misc
|
|
|
26 /* __need_wint_t is intentionally not defined here. */
|
|
|
27 #endif
|
|
|
28
|
|
|
29 #if defined(__need_ptrdiff_t)
|
|
|
30 #if !defined(_PTRDIFF_T) || __has_feature(modules)
|
|
|
31 /* Always define ptrdiff_t when modules are available. */
|
|
|
32 #if !__has_feature(modules)
|
|
|
33 #define _PTRDIFF_T
|
|
|
34 #endif
|
|
|
35 typedef __PTRDIFF_TYPE__ ptrdiff_t;
|
|
|
36 #endif
|
|
|
37 #undef __need_ptrdiff_t
|
|
|
38 #endif /* defined(__need_ptrdiff_t) */
|
|
|
39
|
|
|
40 #if defined(__need_size_t)
|
|
|
41 #if !defined(_SIZE_T) || __has_feature(modules)
|
|
|
42 /* Always define size_t when modules are available. */
|
|
|
43 #if !__has_feature(modules)
|
|
|
44 #define _SIZE_T
|
|
|
45 #endif
|
|
|
46 typedef __SIZE_TYPE__ size_t;
|
|
|
47 #endif
|
|
|
48 #undef __need_size_t
|
|
|
49 #endif /*defined(__need_size_t) */
|
|
|
50
|
|
|
51 #if defined(__need_STDDEF_H_misc)
|
|
|
52 /* ISO9899:2011 7.20 (C11 Annex K): Define rsize_t if __STDC_WANT_LIB_EXT1__ is
|
|
|
53 * enabled. */
|
|
|
54 #if (defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1 && \
|
|
|
55 !defined(_RSIZE_T)) || __has_feature(modules)
|
|
|
56 /* Always define rsize_t when modules are available. */
|
|
|
57 #if !__has_feature(modules)
|
|
|
58 #define _RSIZE_T
|
|
|
59 #endif
|
|
|
60 typedef __SIZE_TYPE__ rsize_t;
|
|
|
61 #endif
|
|
|
62 #endif /* defined(__need_STDDEF_H_misc) */
|
|
|
63
|
|
|
64 #if defined(__need_wchar_t)
|
|
|
65 #ifndef __cplusplus
|
|
|
66 /* Always define wchar_t when modules are available. */
|
|
|
67 #if !defined(_WCHAR_T) || __has_feature(modules)
|
|
|
68 #if !__has_feature(modules)
|
|
|
69 #define _WCHAR_T
|
|
|
70 #if defined(_MSC_EXTENSIONS)
|
|
|
71 #define _WCHAR_T_DEFINED
|
|
|
72 #endif
|
|
|
73 #endif
|
|
|
74 typedef __WCHAR_TYPE__ wchar_t;
|
|
|
75 #endif
|
|
|
76 #endif
|
|
|
77 #undef __need_wchar_t
|
|
|
78 #endif /* defined(__need_wchar_t) */
|
|
|
79
|
|
|
80 #if defined(__need_NULL)
|
|
|
81 #undef NULL
|
|
|
82 #ifdef __cplusplus
|
|
|
83 # if !defined(__MINGW32__) && !defined(_MSC_VER)
|
|
|
84 # define NULL __null
|
|
|
85 # else
|
|
|
86 # define NULL 0
|
|
|
87 # endif
|
|
|
88 #else
|
|
|
89 # define NULL ((void*)0)
|
|
|
90 #endif
|
|
|
91 #ifdef __cplusplus
|
|
|
92 #if defined(_MSC_EXTENSIONS) && defined(_NATIVE_NULLPTR_SUPPORTED)
|
|
|
93 namespace std { typedef decltype(nullptr) nullptr_t; }
|
|
|
94 using ::std::nullptr_t;
|
|
|
95 #endif
|
|
|
96 #endif
|
|
|
97 #undef __need_NULL
|
|
|
98 #endif /* defined(__need_NULL) */
|
|
|
99
|
|
|
100 #if defined(__need_STDDEF_H_misc)
|
|
|
101 #if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
|
|
|
102 #include "__stddef_max_align_t.h"
|
|
|
103 #endif
|
|
|
104 #define offsetof(t, d) __builtin_offsetof(t, d)
|
|
|
105 #undef __need_STDDEF_H_misc
|
|
|
106 #endif /* defined(__need_STDDEF_H_misc) */
|
|
|
107
|
|
|
108 /* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use
|
|
|
109 __WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */
|
|
|
110 #if defined(__need_wint_t)
|
|
|
111 /* Always define wint_t when modules are available. */
|
|
|
112 #if !defined(_WINT_T) || __has_feature(modules)
|
|
|
113 #if !__has_feature(modules)
|
|
|
114 #define _WINT_T
|
|
|
115 #endif
|
|
|
116 typedef __WINT_TYPE__ wint_t;
|
|
|
117 #endif
|
|
|
118 #undef __need_wint_t
|
|
|
119 #endif /* __need_wint_t */
|
|
|
120
|
|
|
121 #endif
|
