reactos/include/crt/stddef.h

   1 /**
   2  * This file has no copyright assigned and is placed in the Public Domain.
   3  * This file is part of the w64 mingw-runtime package.
   4  * No warranty is given; refer to the file DISCLAIMER within this package.
   5  */
   6
   7 #include <_mingw.h>
   8
   9 #ifndef _INC_STDDEF
  10 #define _INC_STDDEF
  11
  12 #ifdef __cplusplus
  13 extern "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
  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
  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 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 typedef __SIZE_TYPE__ size_t;
 219 #ifdef __BEOS__
 220 typedef 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)
 299 typedef _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 #define __WCHAR_TYPE__ unsigned short
 315 #endif
 316 #ifndef __cplusplus
 317 typedef __WCHAR_TYPE__ wchar_t;
 318 #endif
 319 #endif
 320 #endif
 321 #endif
 322 #endif
 323 #endif
 324 #endif
 325 #endif /* _WCHAR_T_DECLARED */
 326 #endif /* _BSD_RUNE_T_DEFINED_ */
 327 #endif
 328 #endif
 329 #endif
 330 #endif
 331 #endif
 332 #endif
 333 #endif
 334 #endif /* __WCHAR_T__ */
 335 #endif /* __wchar_t__ */
 336 #undef  __need_wchar_t
 337 #endif /* _STDDEF_H or __need_wchar_t.  */
 338
 339 /*  In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
 340     are already defined.  */
 341 /*  BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here.  */
 342 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)
 343 /*  The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_
 344     are probably typos and should be removed before 2.8 is released.  */
 345 #ifdef _GCC_PTRDIFF_T_
 346 #undef _PTRDIFF_T_
 347 #undef _BSD_PTRDIFF_T_
 348 #endif
 349 #ifdef _GCC_SIZE_T_
 350 #undef _SIZE_T_
 351 #undef _BSD_SIZE_T_
 352 #endif
 353 #ifdef _GCC_WCHAR_T_
 354 #undef _WCHAR_T_
 355 #undef _BSD_WCHAR_T_
 356 #endif
 357 /*  The following ones are the real ones.  */
 358 #ifdef _GCC_PTRDIFF_T
 359 #undef _PTRDIFF_T_
 360 #undef _BSD_PTRDIFF_T_
 361 #endif
 362 #ifdef _GCC_SIZE_T
 363 #undef _SIZE_T_
 364 #undef _BSD_SIZE_T_
 365 #endif
 366 #ifdef _GCC_WCHAR_T
 367 #undef _WCHAR_T_
 368 #undef _BSD_WCHAR_T_
 369 #endif
 370 #endif /* _ANSI_H_ || _MACHINE_ANSI_H_ */
 371
 372 #endif /* __sys_stdtypes_h */
 373
 374 /* A null pointer constant.  */
 375
 376 #if defined (_STDDEF_H) || defined (__need_NULL)
 377 #undef NULL             /* in case <stdio.h> has defined it. */
 378 #ifdef __GNUG__
 379 #define NULL __null
 380 #else   /* G++ */
 381 #ifndef __cplusplus
 382 #define NULL ((void *)0)
 383 #else   /* C++ */
 384 #define NULL 0
 385 #endif  /* C++ */
 386 #endif  /* G++ */
 387 #endif  /* NULL not defined and <stddef.h> or need NULL.  */
 388 #undef  __need_NULL
 389
 390 #ifndef offsetof
 391
 392 /* Offset of member MEMBER in a struct of type TYPE. */
 393 #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
 394
 395 #endif /* !offsetof */
 396
 397 #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__
 398           || __need_XXX was not defined before */