source: Daodan/MinGW/lib/gcc/mingw32/5.3.0/include/stddef.h@ 1088

Last change on this file since 1088 was 1046, checked in by alloc, 8 years ago

Daodan: Added Windows MinGW and build batch file
File size: 13.4 KB
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1/* Copyright (C) 1989-2015 Free Software Foundation, Inc.
2
3This file is part of GCC.
4
5GCC is free software; you can redistribute it and/or modify
6it under the terms of the GNU General Public License as published by
7the Free Software Foundation; either version 3, or (at your option)
8any later version.
9
10GCC is distributed in the hope that it will be useful,
11but WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15Under Section 7 of GPL version 3, you are granted additional
16permissions described in the GCC Runtime Library Exception, version
173.1, as published by the Free Software Foundation.
18
19You should have received a copy of the GNU General Public License and
20a copy of the GCC Runtime Library Exception along with this program;
21see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
22<http://www.gnu.org/licenses/>. */
23
24/*
25 * ISO C Standard: 7.17 Common definitions <stddef.h>
26 */
27#if (!defined(_STDDEF_H) && !defined(_STDDEF_H_) && !defined(_ANSI_STDDEF_H) \
28 && !defined(__STDDEF_H__)) \
29 || defined(__need_wchar_t) || defined(__need_size_t) \
30 || defined(__need_ptrdiff_t) || defined(__need_NULL) \
31 || defined(__need_wint_t)
32
33/* Any one of these symbols __need_* means that GNU libc
34 wants us just to define one data type. So don't define
35 the symbols that indicate this file's entire job has been done. */
36#if (!defined(__need_wchar_t) && !defined(__need_size_t) \
37 && !defined(__need_ptrdiff_t) && !defined(__need_NULL) \
38 && !defined(__need_wint_t))
39#define _STDDEF_H
40#define _STDDEF_H_
41/* snaroff@next.com says the NeXT needs this. */
42#define _ANSI_STDDEF_H
43#endif
44
45#ifndef __sys_stdtypes_h
46/* This avoids lossage on SunOS but only if stdtypes.h comes first.
47 There's no way to win with the other order! Sun lossage. */
48
49/* On 4.3bsd-net2, make sure ansi.h is included, so we have
50 one less case to deal with in the following. */
51#if defined (__BSD_NET2__) || defined (____386BSD____) || (defined (__FreeBSD__) && (__FreeBSD__ < 5)) || defined(__NetBSD__)
52#include <machine/ansi.h>
53#endif
54/* On FreeBSD 5, machine/ansi.h does not exist anymore... */
55#if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
56#include <sys/_types.h>
57#endif
58
59/* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
60 defined if the corresponding type is *not* defined.
61 FreeBSD-2.1 defines _MACHINE_ANSI_H_ instead of _ANSI_H_.
62 NetBSD defines _I386_ANSI_H_ and _X86_64_ANSI_H_ instead of _ANSI_H_ */
63#if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) || defined(_X86_64_ANSI_H_) || defined(_I386_ANSI_H_)
64#if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_)
65#define _SIZE_T
66#endif
67#if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_)
68#define _PTRDIFF_T
69#endif
70/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
71 instead of _WCHAR_T_. */
72#if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_)
73#ifndef _BSD_WCHAR_T_
74#define _WCHAR_T
75#endif
76#endif
77/* Undef _FOO_T_ if we are supposed to define foo_t. */
78#if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)
79#undef _PTRDIFF_T_
80#undef _BSD_PTRDIFF_T_
81#endif
82#if defined (__need_size_t) || defined (_STDDEF_H_)
83#undef _SIZE_T_
84#undef _BSD_SIZE_T_
85#endif
86#if defined (__need_wchar_t) || defined (_STDDEF_H_)
87#undef _WCHAR_T_
88#undef _BSD_WCHAR_T_
89#endif
90#endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) || defined(_X86_64_ANSI_H_) || defined(_I386_ANSI_H_) */
91
92/* Sequent's header files use _PTRDIFF_T_ in some conflicting way.
93 Just ignore it. */
94#if defined (__sequent__) && defined (_PTRDIFF_T_)
95#undef _PTRDIFF_T_
96#endif
97
98/* On VxWorks, <type/vxTypesBase.h> may have defined macros like
99 _TYPE_size_t which will typedef size_t. fixincludes patched the
100 vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
101 not defined, and so that defining this macro defines _GCC_SIZE_T.
102 If we find that the macros are still defined at this point, we must
103 invoke them so that the type is defined as expected. */
104#if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_))
105_TYPE_ptrdiff_t;
106#undef _TYPE_ptrdiff_t
107#endif
108#if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_))
109_TYPE_size_t;
110#undef _TYPE_size_t
111#endif
112#if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_))
113_TYPE_wchar_t;
114#undef _TYPE_wchar_t
115#endif
116
117/* In case nobody has defined these types, but we aren't running under
118 GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
119 __WCHAR_TYPE__ have reasonable values. This can happen if the
120 parts of GCC is compiled by an older compiler, that actually
121 include gstddef.h, such as collect2. */
122
123/* Signed type of difference of two pointers. */
124
125/* Define this type if we are doing the whole job,
126 or if we want this type in particular. */
127#if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
128#ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */
129#ifndef _T_PTRDIFF_
130#ifndef _T_PTRDIFF
131#ifndef __PTRDIFF_T
132#ifndef _PTRDIFF_T_
133#ifndef _BSD_PTRDIFF_T_
134#ifndef ___int_ptrdiff_t_h
135#ifndef _GCC_PTRDIFF_T
136#ifndef _PTRDIFF_T_DECLARED /* DragonFly */
137#define _PTRDIFF_T
138#define _T_PTRDIFF_
139#define _T_PTRDIFF
140#define __PTRDIFF_T
141#define _PTRDIFF_T_
142#define _BSD_PTRDIFF_T_
143#define ___int_ptrdiff_t_h
144#define _GCC_PTRDIFF_T
145#define _PTRDIFF_T_DECLARED
146#ifndef __PTRDIFF_TYPE__
147#define __PTRDIFF_TYPE__ long int
148#endif
149typedef __PTRDIFF_TYPE__ ptrdiff_t;
150#endif /* _PTRDIFF_T_DECLARED */
151#endif /* _GCC_PTRDIFF_T */
152#endif /* ___int_ptrdiff_t_h */
153#endif /* _BSD_PTRDIFF_T_ */
154#endif /* _PTRDIFF_T_ */
155#endif /* __PTRDIFF_T */
156#endif /* _T_PTRDIFF */
157#endif /* _T_PTRDIFF_ */
158#endif /* _PTRDIFF_T */
159
160/* If this symbol has done its job, get rid of it. */
161#undef __need_ptrdiff_t
162
163#endif /* _STDDEF_H or __need_ptrdiff_t. */
164
165/* Unsigned type of `sizeof' something. */
166
167/* Define this type if we are doing the whole job,
168 or if we want this type in particular. */
169#if defined (_STDDEF_H) || defined (__need_size_t)
170#ifndef __size_t__ /* BeOS */
171#ifndef __SIZE_T__ /* Cray Unicos/Mk */
172#ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
173#ifndef _SYS_SIZE_T_H
174#ifndef _T_SIZE_
175#ifndef _T_SIZE
176#ifndef __SIZE_T
177#ifndef _SIZE_T_
178#ifndef _BSD_SIZE_T_
179#ifndef _SIZE_T_DEFINED_
180#ifndef _SIZE_T_DEFINED
181#ifndef _BSD_SIZE_T_DEFINED_ /* Darwin */
182#ifndef _SIZE_T_DECLARED /* FreeBSD 5 */
183#ifndef ___int_size_t_h
184#ifndef _GCC_SIZE_T
185#ifndef _SIZET_
186#ifndef __size_t
187#define __size_t__ /* BeOS */
188#define __SIZE_T__ /* Cray Unicos/Mk */
189#define _SIZE_T
190#define _SYS_SIZE_T_H
191#define _T_SIZE_
192#define _T_SIZE
193#define __SIZE_T
194#define _SIZE_T_
195#define _BSD_SIZE_T_
196#define _SIZE_T_DEFINED_
197#define _SIZE_T_DEFINED
198#define _BSD_SIZE_T_DEFINED_ /* Darwin */
199#define _SIZE_T_DECLARED /* FreeBSD 5 */
200#define ___int_size_t_h
201#define _GCC_SIZE_T
202#define _SIZET_
203#if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
204 || defined(__DragonFly__) \
205 || defined(__FreeBSD_kernel__)
206/* __size_t is a typedef on FreeBSD 5, must not trash it. */
207#elif defined (__VMS__)
208/* __size_t is also a typedef on VMS. */
209#else
210#define __size_t
211#endif
212#ifndef __SIZE_TYPE__
213#define __SIZE_TYPE__ long unsigned int
214#endif
215#if !(defined (__GNUG__) && defined (size_t))
216typedef __SIZE_TYPE__ size_t;
217#ifdef __BEOS__
218typedef long ssize_t;
219#endif /* __BEOS__ */
220#endif /* !(defined (__GNUG__) && defined (size_t)) */
221#endif /* __size_t */
222#endif /* _SIZET_ */
223#endif /* _GCC_SIZE_T */
224#endif /* ___int_size_t_h */
225#endif /* _SIZE_T_DECLARED */
226#endif /* _BSD_SIZE_T_DEFINED_ */
227#endif /* _SIZE_T_DEFINED */
228#endif /* _SIZE_T_DEFINED_ */
229#endif /* _BSD_SIZE_T_ */
230#endif /* _SIZE_T_ */
231#endif /* __SIZE_T */
232#endif /* _T_SIZE */
233#endif /* _T_SIZE_ */
234#endif /* _SYS_SIZE_T_H */
235#endif /* _SIZE_T */
236#endif /* __SIZE_T__ */
237#endif /* __size_t__ */
238#undef __need_size_t
239#endif /* _STDDEF_H or __need_size_t. */
240
241
242/* Wide character type.
243 Locale-writers should change this as necessary to
244 be big enough to hold unique values not between 0 and 127,
245 and not (wchar_t) -1, for each defined multibyte character. */
246
247/* Define this type if we are doing the whole job,
248 or if we want this type in particular. */
249#if defined (_STDDEF_H) || defined (__need_wchar_t)
250#ifndef __wchar_t__ /* BeOS */
251#ifndef __WCHAR_T__ /* Cray Unicos/Mk */
252#ifndef _WCHAR_T
253#ifndef _T_WCHAR_
254#ifndef _T_WCHAR
255#ifndef __WCHAR_T
256#ifndef _WCHAR_T_
257#ifndef _BSD_WCHAR_T_
258#ifndef _BSD_WCHAR_T_DEFINED_ /* Darwin */
259#ifndef _BSD_RUNE_T_DEFINED_ /* Darwin */
260#ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */
261#ifndef _WCHAR_T_DEFINED_
262#ifndef _WCHAR_T_DEFINED
263#ifndef _WCHAR_T_H
264#ifndef ___int_wchar_t_h
265#ifndef __INT_WCHAR_T_H
266#ifndef _GCC_WCHAR_T
267#define __wchar_t__ /* BeOS */
268#define __WCHAR_T__ /* Cray Unicos/Mk */
269#define _WCHAR_T
270#define _T_WCHAR_
271#define _T_WCHAR
272#define __WCHAR_T
273#define _WCHAR_T_
274#define _BSD_WCHAR_T_
275#define _WCHAR_T_DEFINED_
276#define _WCHAR_T_DEFINED
277#define _WCHAR_T_H
278#define ___int_wchar_t_h
279#define __INT_WCHAR_T_H
280#define _GCC_WCHAR_T
281#define _WCHAR_T_DECLARED
282
283/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
284 instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other
285 symbols in the _FOO_T_ family, stays defined even after its
286 corresponding type is defined). If we define wchar_t, then we
287 must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if
288 we undef _WCHAR_T_, then we must also define rune_t, since
289 headers like runetype.h assume that if machine/ansi.h is included,
290 and _BSD_WCHAR_T_ is not defined, then rune_t is available.
291 machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of
292 the same type." */
293#ifdef _BSD_WCHAR_T_
294#undef _BSD_WCHAR_T_
295#ifdef _BSD_RUNE_T_
296#if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)
297typedef _BSD_RUNE_T_ rune_t;
298#define _BSD_WCHAR_T_DEFINED_
299#define _BSD_RUNE_T_DEFINED_ /* Darwin */
300#if defined (__FreeBSD__) && (__FreeBSD__ < 5)
301/* Why is this file so hard to maintain properly? In contrast to
302 the comment above regarding BSD/386 1.1, on FreeBSD for as long
303 as the symbol has existed, _BSD_RUNE_T_ must not stay defined or
304 redundant typedefs will occur when stdlib.h is included after this file. */
305#undef _BSD_RUNE_T_
306#endif
307#endif
308#endif
309#endif
310/* FreeBSD 5 can't be handled well using "traditional" logic above
311 since it no longer defines _BSD_RUNE_T_ yet still desires to export
312 rune_t in some cases... */
313#if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
314#if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)
315#if __BSD_VISIBLE
316#ifndef _RUNE_T_DECLARED
317typedef __rune_t rune_t;
318#define _RUNE_T_DECLARED
319#endif
320#endif
321#endif
322#endif
323
324#ifndef __WCHAR_TYPE__
325#define __WCHAR_TYPE__ int
326#endif
327#ifndef __cplusplus
328typedef __WCHAR_TYPE__ wchar_t;
329#endif
330#endif
331#endif
332#endif
333#endif
334#endif
335#endif
336#endif /* _WCHAR_T_DECLARED */
337#endif /* _BSD_RUNE_T_DEFINED_ */
338#endif
339#endif
340#endif
341#endif
342#endif
343#endif
344#endif
345#endif /* __WCHAR_T__ */
346#endif /* __wchar_t__ */
347#undef __need_wchar_t
348#endif /* _STDDEF_H or __need_wchar_t. */
349
350#if defined (__need_wint_t)
351#ifndef _WINT_T
352#define _WINT_T
353
354#ifndef __WINT_TYPE__
355#define __WINT_TYPE__ unsigned int
356#endif
357typedef __WINT_TYPE__ wint_t;
358#endif
359#undef __need_wint_t
360#endif
361
362/* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
363 are already defined. */
364/* BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here. */
365/* NetBSD 5 requires the I386_ANSI_H and X86_64_ANSI_H checks here. */
366#if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) || defined(_X86_64_ANSI_H_) || defined(_I386_ANSI_H_)
367/* The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_
368 are probably typos and should be removed before 2.8 is released. */
369#ifdef _GCC_PTRDIFF_T_
370#undef _PTRDIFF_T_
371#undef _BSD_PTRDIFF_T_
372#endif
373#ifdef _GCC_SIZE_T_
374#undef _SIZE_T_
375#undef _BSD_SIZE_T_
376#endif
377#ifdef _GCC_WCHAR_T_
378#undef _WCHAR_T_
379#undef _BSD_WCHAR_T_
380#endif
381/* The following ones are the real ones. */
382#ifdef _GCC_PTRDIFF_T
383#undef _PTRDIFF_T_
384#undef _BSD_PTRDIFF_T_
385#endif
386#ifdef _GCC_SIZE_T
387#undef _SIZE_T_
388#undef _BSD_SIZE_T_
389#endif
390#ifdef _GCC_WCHAR_T
391#undef _WCHAR_T_
392#undef _BSD_WCHAR_T_
393#endif
394#endif /* _ANSI_H_ || _MACHINE_ANSI_H_ || _X86_64_ANSI_H_ || _I386_ANSI_H_ */
395
396#endif /* __sys_stdtypes_h */
397
398/* A null pointer constant. */
399
400#if defined (_STDDEF_H) || defined (__need_NULL)
401#undef NULL /* in case <stdio.h> has defined it. */
402#ifdef __GNUG__
403#define NULL __null
404#else /* G++ */
405#ifndef __cplusplus
406#define NULL ((void *)0)
407#else /* C++ */
408#define NULL 0
409#endif /* C++ */
410#endif /* G++ */
411#endif /* NULL not defined and <stddef.h> or need NULL. */
412#undef __need_NULL
413
414#ifdef _STDDEF_H
415
416/* Offset of member MEMBER in a struct of type TYPE. */
417#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
418
419#if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \
420 || (defined(__cplusplus) && __cplusplus >= 201103L)
421#ifndef _GCC_MAX_ALIGN_T
422#define _GCC_MAX_ALIGN_T
423/* Type whose alignment is supported in every context and is at least
424 as great as that of any standard type not using alignment
425 specifiers. */
426typedef struct {
427 long long __max_align_ll __attribute__((__aligned__(__alignof__(long long))));
428 long double __max_align_ld __attribute__((__aligned__(__alignof__(long double))));
429} max_align_t;
430#endif
431#endif /* C11 or C++11. */
432
433#if defined(__cplusplus) && __cplusplus >= 201103L
434#ifndef _GXX_NULLPTR_T
435#define _GXX_NULLPTR_T
436 typedef decltype(nullptr) nullptr_t;
437#endif
438#endif /* C++11. */
439
440#endif /* _STDDEF_H was defined this time */
441
442#endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__
443 || __need_XXX was not defined before */
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