source: Daodan/MSYS2/mingw32/i686-w64-mingw32/include/stddef.h@ 1186

Last change on this file since 1186 was 1166, checked in by rossy, 3 years ago

Daodan: Replace MinGW build env with an up-to-date MSYS2 env
File size: 12.3 KB
Line 
1/**
2 * This file has no copyright assigned and is placed in the Public Domain.
3 * This file is part of the mingw-w64 runtime package.
4 * No warranty is given; refer to the file DISCLAIMER.PD within this package.
5 */
6
7#include <crtdefs.h>
8
9#ifndef _INC_STDDEF
10#define _INC_STDDEF
11
12#ifdef __cplusplus
13extern "C" {
14#endif
15
16#ifndef _CRT_ERRNO_DEFINED
17#define _CRT_ERRNO_DEFINED
18 _CRTIMP extern int *__cdecl _errno(void);
19#define errno (*_errno())
20 errno_t __cdecl _set_errno(int _Value);
21 errno_t __cdecl _get_errno(int *_Value);
22#endif /* _CRT_ERRNO_DEFINED */
23
24 _CRTIMP extern unsigned long __cdecl __threadid(void);
25#define _threadid (__threadid())
26 _CRTIMP extern uintptr_t __cdecl __threadhandle(void);
27
28#ifdef __cplusplus
29}
30#endif
31
32#endif /* _INC_STDDEF */
33
34/*
35 * ISO C Standard: 7.17 Common definitions <stddef.h>
36 */
37#if (!defined(_STDDEF_H) && !defined(_STDDEF_H_) && !defined(_ANSI_STDDEF_H) \
38 && !defined(__STDDEF_H__)) \
39 || defined(__need_wchar_t) || defined(__need_size_t) \
40 || defined(__need_ptrdiff_t) || defined(__need_NULL) \
41 || defined(__need_wint_t)
42
43/* Any one of these symbols __need_* means that GNU libc
44 wants us just to define one data type. So don't define
45 the symbols that indicate this file's entire job has been done. */
46#if (!defined(__need_wchar_t) && !defined(__need_size_t) \
47 && !defined(__need_ptrdiff_t) && !defined(__need_NULL) \
48 && !defined(__need_wint_t))
49#define _STDDEF_H
50#define _STDDEF_H_
51/* snaroff@next.com says the NeXT needs this. */
52#define _ANSI_STDDEF_H
53/* Irix 5.1 needs this. */
54#define __STDDEF_H__
55#endif
56
57#ifndef __sys_stdtypes_h
58/* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
59 defined if the corresponding type is *not* defined.
60 FreeBSD-2.1 defines _MACHINE_ANSI_H_ instead of _ANSI_H_ */
61#if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)
62#if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_)
63#define _SIZE_T
64#endif
65#if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_)
66#define _PTRDIFF_T
67#endif
68/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
69 instead of _WCHAR_T_. */
70#if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_)
71#ifndef _BSD_WCHAR_T_
72#define _WCHAR_T
73#endif
74#endif
75/* Undef _FOO_T_ if we are supposed to define foo_t. */
76#if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)
77#undef _PTRDIFF_T_
78#undef _BSD_PTRDIFF_T_
79#endif
80#if defined (__need_size_t) || defined (_STDDEF_H_)
81#undef _SIZE_T_
82#undef _BSD_SIZE_T_
83#endif
84#if defined (__need_wchar_t) || defined (_STDDEF_H_)
85#undef _WCHAR_T_
86#undef _BSD_WCHAR_T_
87#endif
88#endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) */
89
90/* Sequent's header files use _PTRDIFF_T_ in some conflicting way.
91 Just ignore it. */
92#if defined (__sequent__) && defined (_PTRDIFF_T_)
93#undef _PTRDIFF_T_
94#endif
95
96/* On VxWorks, <type/vxTypesBase.h> may have defined macros like
97 _TYPE_size_t which will typedef size_t. fixincludes patched the
98 vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
99 not defined, and so that defining this macro defines _GCC_SIZE_T.
100 If we find that the macros are still defined at this point, we must
101 invoke them so that the type is defined as expected. */
102#if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_))
103_TYPE_ptrdiff_t;
104#undef _TYPE_ptrdiff_t
105#endif
106#if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_))
107_TYPE_size_t;
108#undef _TYPE_size_t
109#endif
110#if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_))
111_TYPE_wchar_t;
112#undef _TYPE_wchar_t
113#endif
114
115/* In case nobody has defined these types, but we aren't running under
116 GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
117 __WCHAR_TYPE__ have reasonable values. This can happen if the
118 parts of GCC is compiled by an older compiler, that actually
119 include gstddef.h, such as collect2. */
120
121/* Signed type of difference of two pointers. */
122
123/* Define this type if we are doing the whole job,
124 or if we want this type in particular. */
125#if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
126#ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */
127#ifndef _T_PTRDIFF_
128#ifndef _T_PTRDIFF
129#ifndef __PTRDIFF_T
130#ifndef _PTRDIFF_T_
131#ifndef _BSD_PTRDIFF_T_
132#ifndef ___int_ptrdiff_t_h
133#ifndef _GCC_PTRDIFF_T
134#define _PTRDIFF_T
135#define _T_PTRDIFF_
136#define _T_PTRDIFF
137#define __PTRDIFF_T
138#define _PTRDIFF_T_
139#define _BSD_PTRDIFF_T_
140#define ___int_ptrdiff_t_h
141#define _GCC_PTRDIFF_T
142#ifndef __PTRDIFF_TYPE__
143#ifdef _WIN64
144#define __PTRDIFF_TYPE__ long long int
145#else
146#define __PTRDIFF_TYPE__ long int
147#endif
148#endif
149#ifndef _PTRDIFF_T_DEFINED
150#define _PTRDIFF_T_DEFINED
151__MINGW_EXTENSION typedef __PTRDIFF_TYPE__ ptrdiff_t;
152#endif
153#endif /* _GCC_PTRDIFF_T */
154#endif /* ___int_ptrdiff_t_h */
155#endif /* _BSD_PTRDIFF_T_ */
156#endif /* _PTRDIFF_T_ */
157#endif /* __PTRDIFF_T */
158#endif /* _T_PTRDIFF */
159#endif /* _T_PTRDIFF_ */
160#endif /* _PTRDIFF_T */
161
162/* If this symbol has done its job, get rid of it. */
163#undef __need_ptrdiff_t
164
165#endif /* _STDDEF_H or __need_ptrdiff_t. */
166
167/* Unsigned type of `sizeof' something. */
168
169/* Define this type if we are doing the whole job,
170 or if we want this type in particular. */
171#if defined (_STDDEF_H) || defined (__need_size_t)
172#ifndef __size_t__ /* BeOS */
173#ifndef __SIZE_T__ /* Cray Unicos/Mk */
174#ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
175#ifndef _SYS_SIZE_T_H
176#ifndef _T_SIZE_
177#ifndef _T_SIZE
178#ifndef __SIZE_T
179#ifndef _SIZE_T_
180#ifndef _BSD_SIZE_T_
181#ifndef _SIZE_T_DEFINED_
182#ifndef _SIZE_T_DEFINED
183#ifndef _BSD_SIZE_T_DEFINED_ /* Darwin */
184#ifndef _SIZE_T_DECLARED /* FreeBSD 5 */
185#ifndef ___int_size_t_h
186#ifndef _GCC_SIZE_T
187#ifndef _SIZET_
188#ifndef __size_t
189#define __size_t__ /* BeOS */
190#define __SIZE_T__ /* Cray Unicos/Mk */
191#define _SIZE_T
192#define _SYS_SIZE_T_H
193#define _T_SIZE_
194#define _T_SIZE
195#define __SIZE_T
196#define _SIZE_T_
197#define _BSD_SIZE_T_
198#define _SIZE_T_DEFINED_
199#define _SIZE_T_DEFINED
200#define _BSD_SIZE_T_DEFINED_ /* Darwin */
201#define _SIZE_T_DECLARED /* FreeBSD 5 */
202#define ___int_size_t_h
203#define _GCC_SIZE_T
204#define _SIZET_
205#if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
206/* __size_t is a typedef on FreeBSD 5!, must not trash it. */
207#else
208#define __size_t
209#endif
210#ifndef __SIZE_TYPE__
211#ifdef _WIN64
212#define __SIZE_TYPE__ long long unsigned int
213#else
214#define __SIZE_TYPE__ long unsigned int
215#endif
216#endif
217#if !(defined (__GNUG__) && defined (size_t))
218__MINGW_EXTENSION typedef __SIZE_TYPE__ size_t;
219#ifdef __BEOS__
220typedef long ssize_t;
221#endif /* __BEOS__ */
222#endif /* !(defined (__GNUG__) && defined (size_t)) */
223#endif /* __size_t */
224#endif /* _SIZET_ */
225#endif /* _GCC_SIZE_T */
226#endif /* ___int_size_t_h */
227#endif /* _SIZE_T_DECLARED */
228#endif /* _BSD_SIZE_T_DEFINED_ */
229#endif /* _SIZE_T_DEFINED */
230#endif /* _SIZE_T_DEFINED_ */
231#endif /* _BSD_SIZE_T_ */
232#endif /* _SIZE_T_ */
233#endif /* __SIZE_T */
234#endif /* _T_SIZE */
235#endif /* _T_SIZE_ */
236#endif /* _SYS_SIZE_T_H */
237#endif /* _SIZE_T */
238#endif /* __SIZE_T__ */
239#endif /* __size_t__ */
240#undef __need_size_t
241#endif /* _STDDEF_H or __need_size_t. */
242
243
244/* Wide character type.
245 Locale-writers should change this as necessary to
246 be big enough to hold unique values not between 0 and 127,
247 and not (wchar_t) -1, for each defined multibyte character. */
248
249/* Define this type if we are doing the whole job,
250 or if we want this type in particular. */
251#if defined (_STDDEF_H) || defined (__need_wchar_t)
252#ifndef __wchar_t__ /* BeOS */
253#ifndef __WCHAR_T__ /* Cray Unicos/Mk */
254#ifndef _WCHAR_T
255#ifndef _T_WCHAR_
256#ifndef _T_WCHAR
257#ifndef __WCHAR_T
258#ifndef _WCHAR_T_
259#ifndef _BSD_WCHAR_T_
260#ifndef _BSD_WCHAR_T_DEFINED_ /* Darwin */
261#ifndef _BSD_RUNE_T_DEFINED_ /* Darwin */
262#ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */
263#ifndef _WCHAR_T_DEFINED_
264#ifndef _WCHAR_T_DEFINED
265#ifndef _WCHAR_T_H
266#ifndef ___int_wchar_t_h
267#ifndef __INT_WCHAR_T_H
268#ifndef _GCC_WCHAR_T
269#define __wchar_t__ /* BeOS */
270#define __WCHAR_T__ /* Cray Unicos/Mk */
271#define _WCHAR_T
272#define _T_WCHAR_
273#define _T_WCHAR
274#define __WCHAR_T
275#define _WCHAR_T_
276#define _BSD_WCHAR_T_
277#define _WCHAR_T_DEFINED_
278#define _WCHAR_T_DEFINED
279#define _WCHAR_T_H
280#define ___int_wchar_t_h
281#define __INT_WCHAR_T_H
282#define _GCC_WCHAR_T
283#define _WCHAR_T_DECLARED
284
285/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
286 instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other
287 symbols in the _FOO_T_ family, stays defined even after its
288 corresponding type is defined). If we define wchar_t, then we
289 must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if
290 we undef _WCHAR_T_, then we must also define rune_t, since
291 headers like runetype.h assume that if machine/ansi.h is included,
292 and _BSD_WCHAR_T_ is not defined, then rune_t is available.
293 machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of
294 the same type." */
295#ifdef _BSD_WCHAR_T_
296#undef _BSD_WCHAR_T_
297#ifdef _BSD_RUNE_T_
298#if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)
299typedef _BSD_RUNE_T_ rune_t;
300#define _BSD_WCHAR_T_DEFINED_
301#define _BSD_RUNE_T_DEFINED_ /* Darwin */
302#if defined (__FreeBSD__) && (__FreeBSD__ < 5)
303/* Why is this file so hard to maintain properly? In contrast to
304 the comment above regarding BSD/386 1.1, on FreeBSD for as long
305 as the symbol has existed, _BSD_RUNE_T_ must not stay defined or
306 redundant typedefs will occur when stdlib.h is included after this file. */
307#undef _BSD_RUNE_T_
308#endif
309#endif
310#endif
311#endif
312
313#ifndef __WCHAR_TYPE__
314/* wchar_t is unsigned short for compatibility with MS runtime */
315#define __WCHAR_TYPE__ unsigned short
316#endif
317#ifndef __cplusplus
318typedef __WCHAR_TYPE__ wchar_t;
319#endif
320#endif
321#endif
322#endif
323#endif
324#endif
325#endif
326#endif /* _WCHAR_T_DECLARED */
327#endif /* _BSD_RUNE_T_DEFINED_ */
328#endif
329#endif
330#endif
331#endif
332#endif
333#endif
334#endif
335#endif /* __WCHAR_T__ */
336#endif /* __wchar_t__ */
337#undef __need_wchar_t
338#endif /* _STDDEF_H or __need_wchar_t. */
339
340#if defined (__need_wint_t)
341#ifndef _WINT_T
342#define _WINT_T
343#ifndef __WINT_TYPE__
344/* wint_t is unsigned short for compatibility with MS runtime */
345#define __WINT_TYPE__ unsigned short
346#endif
347#ifndef _WCTYPE_T_DEFINED
348#define _WCTYPE_T_DEFINED
349 typedef __WINT_TYPE__ wint_t;
350 typedef unsigned short wctype_t;
351#endif
352#endif
353#undef __need_wint_t
354#endif
355
356/* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
357 are already defined. */
358/* BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here. */
359#if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)
360/* The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_
361 are probably typos and should be removed before 2.8 is released. */
362#ifdef _GCC_PTRDIFF_T_
363#undef _PTRDIFF_T_
364#undef _BSD_PTRDIFF_T_
365#endif
366#ifdef _GCC_SIZE_T_
367#undef _SIZE_T_
368#undef _BSD_SIZE_T_
369#endif
370#ifdef _GCC_WCHAR_T_
371#undef _WCHAR_T_
372#undef _BSD_WCHAR_T_
373#endif
374/* The following ones are the real ones. */
375#ifdef _GCC_PTRDIFF_T
376#undef _PTRDIFF_T_
377#undef _BSD_PTRDIFF_T_
378#endif
379#ifdef _GCC_SIZE_T
380#undef _SIZE_T_
381#undef _BSD_SIZE_T_
382#endif
383#ifdef _GCC_WCHAR_T
384#undef _WCHAR_T_
385#undef _BSD_WCHAR_T_
386#endif
387#endif /* _ANSI_H_ || _MACHINE_ANSI_H_ */
388
389#endif /* __sys_stdtypes_h */
390
391/* A null pointer constant. */
392
393#if defined (_STDDEF_H) || defined (__need_NULL)
394#undef NULL /* in case <stdio.h> has defined it. */
395#if defined(__GNUG__) && __GNUG__ >= 3
396#define NULL __null
397#else /* G++ */
398#ifndef __cplusplus
399#define NULL ((void *)0)
400#else /* C++ */
401#ifndef _WIN64
402#define NULL 0
403#else
404#define NULL 0LL
405#endif /* W64 */
406#endif /* C++ */
407#endif /* G++ */
408#endif /* NULL not defined and <stddef.h> or need NULL. */
409#undef __need_NULL
410
411#ifdef _STDDEF_H
412
413/* Offset of member MEMBER in a struct of type TYPE. */
414#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
415
416#if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \
417 || (defined(__cplusplus) && __cplusplus >= 201103L)
418#if !defined(_GCC_MAX_ALIGN_T) && !defined(__CLANG_MAX_ALIGN_T_DEFINED)
419#define _GCC_MAX_ALIGN_T
420#define __CLANG_MAX_ALIGN_T_DEFINED
421/* Type whose alignment is supported in every context and is at least
422 as great as that of any standard type not using alignment
423 specifiers. */
424typedef struct {
425 long long __max_align_ll __attribute__((__aligned__(__alignof__(long long))));
426 long double __max_align_ld __attribute__((__aligned__(__alignof__(long double))));
427} max_align_t;
428#endif
429#endif /* C11 or C++11. */
430
431#endif /* _STDDEF_H was defined this time. */
432
433#endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__
434 || __need_XXX was not defined before */
435
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