1 /* Copyright (C) 1989, 1997, 1998, 1999, 2000, 2002, 2004 2 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GCC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GCC; see the file COPYING. If not, write to 18 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 19 Boston, MA 02110-1301, USA. */ 20 21 /* As a special exception, if you include this header file into source 22 files compiled by GCC, this header file does not by itself cause 23 the resulting executable to be covered by the GNU General Public 24 License. This exception does not however invalidate any other 25 reasons why the executable file might be covered by the GNU General 26 Public License. */ 27 28 /* 29 * ISO C Standard: 7.17 Common definitions <stddef.h> 30 */ 31 #if (!defined(_STDDEF_H) && !defined(_STDDEF_H_) && !defined(_ANSI_STDDEF_H) \ 32 && !defined(__STDDEF_H__)) \ 33 || defined(__need_wchar_t) || defined(__need_size_t) \ 34 || defined(__need_ptrdiff_t) || defined(__need_NULL) \ 35 || defined(__need_wint_t) 36 37 /* Any one of these symbols __need_* means that GNU libc 38 wants us just to define one data type. So don't define 39 the symbols that indicate this file's entire job has been done. */ 40 #if (!defined(__need_wchar_t) && !defined(__need_size_t) \ 41 && !defined(__need_ptrdiff_t) && !defined(__need_NULL) \ 42 && !defined(__need_wint_t)) 43 #define _STDDEF_H 44 #define _STDDEF_H_ 45 /* snaroff (at) next.com says the NeXT needs this. */ 46 #define _ANSI_STDDEF_H 47 /* Irix 5.1 needs this. */ 48 #define __STDDEF_H__ 49 #endif 50 51 #ifndef __sys_stdtypes_h 52 /* This avoids lossage on SunOS but only if stdtypes.h comes first. 53 There's no way to win with the other order! Sun lossage. */ 54 55 /* On 4.3bsd-net2, make sure ansi.h is included, so we have 56 one less case to deal with in the following. */ 57 #if defined (__BSD_NET2__) || defined (____386BSD____) || (defined (__FreeBSD__) && (__FreeBSD__ < 5)) || defined(__NetBSD__) 58 #include <machine/ansi.h> 59 #endif 60 /* On FreeBSD 5, machine/ansi.h does not exist anymore... */ 61 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5) 62 #include <sys/_types.h> 63 #endif 64 65 /* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are 66 defined if the corresponding type is *not* defined. 67 FreeBSD-2.1 defines _MACHINE_ANSI_H_ instead of _ANSI_H_ */ 68 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) 69 #if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_) 70 #define _SIZE_T 71 #endif 72 #if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_) 73 #define _PTRDIFF_T 74 #endif 75 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 76 instead of _WCHAR_T_. */ 77 #if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_) 78 #ifndef _BSD_WCHAR_T_ 79 #define _WCHAR_T 80 #endif 81 #endif 82 /* Undef _FOO_T_ if we are supposed to define foo_t. */ 83 #if defined (__need_ptrdiff_t) || defined (_STDDEF_H_) 84 #undef _PTRDIFF_T_ 85 #undef _BSD_PTRDIFF_T_ 86 #endif 87 #if defined (__need_size_t) || defined (_STDDEF_H_) 88 #undef _SIZE_T_ 89 #undef _BSD_SIZE_T_ 90 #endif 91 #if defined (__need_wchar_t) || defined (_STDDEF_H_) 92 #undef _WCHAR_T_ 93 #undef _BSD_WCHAR_T_ 94 #endif 95 #endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) */ 96 97 /* Sequent's header files use _PTRDIFF_T_ in some conflicting way. 98 Just ignore it. */ 99 #if defined (__sequent__) && defined (_PTRDIFF_T_) 100 #undef _PTRDIFF_T_ 101 #endif 102 103 /* On VxWorks, <type/vxTypesBase.h> may have defined macros like 104 _TYPE_size_t which will typedef size_t. fixincludes patched the 105 vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is 106 not defined, and so that defining this macro defines _GCC_SIZE_T. 107 If we find that the macros are still defined at this point, we must 108 invoke them so that the type is defined as expected. */ 109 #if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_)) 110 _TYPE_ptrdiff_t; 111 #undef _TYPE_ptrdiff_t 112 #endif 113 #if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_)) 114 _TYPE_size_t; 115 #undef _TYPE_size_t 116 #endif 117 #if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_)) 118 _TYPE_wchar_t; 119 #undef _TYPE_wchar_t 120 #endif 121 122 /* In case nobody has defined these types, but we aren't running under 123 GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and 124 __WCHAR_TYPE__ have reasonable values. This can happen if the 125 parts of GCC is compiled by an older compiler, that actually 126 include gstddef.h, such as collect2. */ 127 128 /* Signed type of difference of two pointers. */ 129 130 /* Define this type if we are doing the whole job, 131 or if we want this type in particular. */ 132 #if defined (_STDDEF_H) || defined (__need_ptrdiff_t) 133 #ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */ 134 #ifndef _T_PTRDIFF_ 135 #ifndef _T_PTRDIFF 136 #ifndef __PTRDIFF_T 137 #ifndef _PTRDIFF_T_ 138 #ifndef _BSD_PTRDIFF_T_ 139 #ifndef ___int_ptrdiff_t_h 140 #ifndef _GCC_PTRDIFF_T 141 #define _PTRDIFF_T 142 #define _T_PTRDIFF_ 143 #define _T_PTRDIFF 144 #define __PTRDIFF_T 145 #define _PTRDIFF_T_ 146 #define _BSD_PTRDIFF_T_ 147 #define ___int_ptrdiff_t_h 148 #define _GCC_PTRDIFF_T 149 #ifndef __PTRDIFF_TYPE__ 150 #define __PTRDIFF_TYPE__ long int 151 #endif 152 typedef __PTRDIFF_TYPE__ ptrdiff_t; 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 #define __SIZE_TYPE__ long unsigned int 212 #endif 213 #if !(defined (__GNUG__) && defined (size_t)) 214 typedef __SIZE_TYPE__ size_t; 215 #ifdef __BEOS__ 216 typedef long ssize_t; 217 #endif /* __BEOS__ */ 218 #endif /* !(defined (__GNUG__) && defined (size_t)) */ 219 #endif /* __size_t */ 220 #endif /* _SIZET_ */ 221 #endif /* _GCC_SIZE_T */ 222 #endif /* ___int_size_t_h */ 223 #endif /* _SIZE_T_DECLARED */ 224 #endif /* _BSD_SIZE_T_DEFINED_ */ 225 #endif /* _SIZE_T_DEFINED */ 226 #endif /* _SIZE_T_DEFINED_ */ 227 #endif /* _BSD_SIZE_T_ */ 228 #endif /* _SIZE_T_ */ 229 #endif /* __SIZE_T */ 230 #endif /* _T_SIZE */ 231 #endif /* _T_SIZE_ */ 232 #endif /* _SYS_SIZE_T_H */ 233 #endif /* _SIZE_T */ 234 #endif /* __SIZE_T__ */ 235 #endif /* __size_t__ */ 236 #undef __need_size_t 237 #endif /* _STDDEF_H or __need_size_t. */ 238 239 240 /* Wide character type. 241 Locale-writers should change this as necessary to 242 be big enough to hold unique values not between 0 and 127, 243 and not (wchar_t) -1, for each defined multibyte character. */ 244 245 /* Define this type if we are doing the whole job, 246 or if we want this type in particular. */ 247 #if defined (_STDDEF_H) || defined (__need_wchar_t) 248 #ifndef __wchar_t__ /* BeOS */ 249 #ifndef __WCHAR_T__ /* Cray Unicos/Mk */ 250 #ifndef _WCHAR_T 251 #ifndef _T_WCHAR_ 252 #ifndef _T_WCHAR 253 #ifndef __WCHAR_T 254 #ifndef _WCHAR_T_ 255 #ifndef _BSD_WCHAR_T_ 256 #ifndef _BSD_WCHAR_T_DEFINED_ /* Darwin */ 257 #ifndef _BSD_RUNE_T_DEFINED_ /* Darwin */ 258 #ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */ 259 #ifndef _WCHAR_T_DEFINED_ 260 #ifndef _WCHAR_T_DEFINED 261 #ifndef _WCHAR_T_H 262 #ifndef ___int_wchar_t_h 263 #ifndef __INT_WCHAR_T_H 264 #ifndef _GCC_WCHAR_T 265 #define __wchar_t__ /* BeOS */ 266 #define __WCHAR_T__ /* Cray Unicos/Mk */ 267 #define _WCHAR_T 268 #define _T_WCHAR_ 269 #define _T_WCHAR 270 #define __WCHAR_T 271 #define _WCHAR_T_ 272 #define _BSD_WCHAR_T_ 273 #define _WCHAR_T_DEFINED_ 274 #define _WCHAR_T_DEFINED 275 #define _WCHAR_T_H 276 #define ___int_wchar_t_h 277 #define __INT_WCHAR_T_H 278 #define _GCC_WCHAR_T 279 #define _WCHAR_T_DECLARED 280 281 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 282 instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other 283 symbols in the _FOO_T_ family, stays defined even after its 284 corresponding type is defined). If we define wchar_t, then we 285 must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if 286 we undef _WCHAR_T_, then we must also define rune_t, since 287 headers like runetype.h assume that if machine/ansi.h is included, 288 and _BSD_WCHAR_T_ is not defined, then rune_t is available. 289 machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of 290 the same type." */ 291 #ifdef _BSD_WCHAR_T_ 292 #undef _BSD_WCHAR_T_ 293 #ifdef _BSD_RUNE_T_ 294 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 295 typedef _BSD_RUNE_T_ rune_t; 296 #define _BSD_WCHAR_T_DEFINED_ 297 #define _BSD_RUNE_T_DEFINED_ /* Darwin */ 298 #if defined (__FreeBSD__) && (__FreeBSD__ < 5) 299 /* Why is this file so hard to maintain properly? In contrast to 300 the comment above regarding BSD/386 1.1, on FreeBSD for as long 301 as the symbol has existed, _BSD_RUNE_T_ must not stay defined or 302 redundant typedefs will occur when stdlib.h is included after this file. */ 303 #undef _BSD_RUNE_T_ 304 #endif 305 #endif 306 #endif 307 #endif 308 /* FreeBSD 5 can't be handled well using "traditional" logic above 309 since it no longer defines _BSD_RUNE_T_ yet still desires to export 310 rune_t in some cases... */ 311 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5) 312 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 313 #if __BSD_VISIBLE 314 #ifndef _RUNE_T_DECLARED 315 typedef __rune_t rune_t; 316 #define _RUNE_T_DECLARED 317 #endif 318 #endif 319 #endif 320 #endif 321 322 #ifndef __WCHAR_TYPE__ 323 #define __WCHAR_TYPE__ int 324 #endif 325 #ifndef __cplusplus 326 typedef __WCHAR_TYPE__ wchar_t; 327 #endif 328 #endif 329 #endif 330 #endif 331 #endif 332 #endif 333 #endif 334 #endif /* _WCHAR_T_DECLARED */ 335 #endif /* _BSD_RUNE_T_DEFINED_ */ 336 #endif 337 #endif 338 #endif 339 #endif 340 #endif 341 #endif 342 #endif 343 #endif /* __WCHAR_T__ */ 344 #endif /* __wchar_t__ */ 345 #undef __need_wchar_t 346 #endif /* _STDDEF_H or __need_wchar_t. */ 347 348 #if defined (__need_wint_t) 349 #ifndef _WINT_T 350 #define _WINT_T 351 352 #ifndef __WINT_TYPE__ 353 #define __WINT_TYPE__ unsigned int 354 #endif 355 typedef __WINT_TYPE__ wint_t; 356 #endif 357 #undef __need_wint_t 358 #endif 359 360 /* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc. 361 are already defined. */ 362 /* BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here. */ 363 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) 364 /* The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_ 365 are probably typos and should be removed before 2.8 is released. */ 366 #ifdef _GCC_PTRDIFF_T_ 367 #undef _PTRDIFF_T_ 368 #undef _BSD_PTRDIFF_T_ 369 #endif 370 #ifdef _GCC_SIZE_T_ 371 #undef _SIZE_T_ 372 #undef _BSD_SIZE_T_ 373 #endif 374 #ifdef _GCC_WCHAR_T_ 375 #undef _WCHAR_T_ 376 #undef _BSD_WCHAR_T_ 377 #endif 378 /* The following ones are the real ones. */ 379 #ifdef _GCC_PTRDIFF_T 380 #undef _PTRDIFF_T_ 381 #undef _BSD_PTRDIFF_T_ 382 #endif 383 #ifdef _GCC_SIZE_T 384 #undef _SIZE_T_ 385 #undef _BSD_SIZE_T_ 386 #endif 387 #ifdef _GCC_WCHAR_T 388 #undef _WCHAR_T_ 389 #undef _BSD_WCHAR_T_ 390 #endif 391 #endif /* _ANSI_H_ || _MACHINE_ANSI_H_ */ 392 393 #endif /* __sys_stdtypes_h */ 394 395 /* A null pointer constant. */ 396 397 #if defined (_STDDEF_H) || defined (__need_NULL) 398 #undef NULL /* in case <stdio.h> has defined it. */ 399 #ifdef __GNUG__ 400 #define NULL __null 401 #else /* G++ */ 402 #ifndef __cplusplus 403 #define NULL ((void *)0) 404 #else /* C++ */ 405 #define NULL 0 406 #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 #endif /* _STDDEF_H was defined this time */ 417 418 #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__ 419 || __need_XXX was not defined before */ 420
