1 /* Copyright (C) 1989, 1997, 1998, 1999, 2000, 2002, 2004, 2009 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 3, 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 Under Section 7 of GPL version 3, you are granted additional 17 permissions described in the GCC Runtime Library Exception, version 18 3.1, as published by the Free Software Foundation. 19 20 You should have received a copy of the GNU General Public License and 21 a copy of the GCC Runtime Library Exception along with this program; 22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 <http://www.gnu.org/licenses/>. */ 24 25 /* 26 * ISO C Standard: 7.17 Common definitions <stddef.h> 27 */ 28 #if (!defined(_STDDEF_H) && !defined(_STDDEF_H_) && !defined(_ANSI_STDDEF_H) \ 29 && !defined(__STDDEF_H__)) \ 30 || defined(__need_wchar_t) || defined(__need_size_t) \ 31 || defined(__need_ptrdiff_t) || defined(__need_NULL) \ 32 || defined(__need_wint_t) 33 34 /* Any one of these symbols __need_* means that GNU libc 35 wants us just to define one data type. So don't define 36 the symbols that indicate this file's entire job has been done. */ 37 #if (!defined(__need_wchar_t) && !defined(__need_size_t) \ 38 && !defined(__need_ptrdiff_t) && !defined(__need_NULL) \ 39 && !defined(__need_wint_t)) 40 #define _STDDEF_H 41 #define _STDDEF_H_ 42 /* snaroff (at) next.com says the NeXT needs this. */ 43 #define _ANSI_STDDEF_H 44 /* Irix 5.1 needs this. */ 45 #define __STDDEF_H__ 46 #endif 47 48 #ifndef __sys_stdtypes_h 49 /* This avoids lossage on SunOS but only if stdtypes.h comes first. 50 There's no way to win with the other order! Sun lossage. */ 51 52 /* On 4.3bsd-net2, make sure ansi.h is included, so we have 53 one less case to deal with in the following. */ 54 #if defined (__BSD_NET2__) || defined (____386BSD____) || (defined (__FreeBSD__) && (__FreeBSD__ < 5)) || defined(__NetBSD__) 55 #include <machine/ansi.h> 56 #endif 57 /* On FreeBSD 5, machine/ansi.h does not exist anymore... */ 58 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5) 59 #include <sys/_types.h> 60 #endif 61 62 /* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are 63 defined if the corresponding type is *not* defined. 64 FreeBSD-2.1 defines _MACHINE_ANSI_H_ instead of _ANSI_H_ */ 65 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) 66 #if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_) 67 #define _SIZE_T 68 #endif 69 #if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_) 70 #define _PTRDIFF_T 71 #endif 72 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 73 instead of _WCHAR_T_. */ 74 #if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_) 75 #ifndef _BSD_WCHAR_T_ 76 #define _WCHAR_T 77 #endif 78 #endif 79 /* Undef _FOO_T_ if we are supposed to define foo_t. */ 80 #if defined (__need_ptrdiff_t) || defined (_STDDEF_H_) 81 #undef _PTRDIFF_T_ 82 #undef _BSD_PTRDIFF_T_ 83 #endif 84 #if defined (__need_size_t) || defined (_STDDEF_H_) 85 #undef _SIZE_T_ 86 #undef _BSD_SIZE_T_ 87 #endif 88 #if defined (__need_wchar_t) || defined (_STDDEF_H_) 89 #undef _WCHAR_T_ 90 #undef _BSD_WCHAR_T_ 91 #endif 92 #endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) */ 93 94 /* Sequent's header files use _PTRDIFF_T_ in some conflicting way. 95 Just ignore it. */ 96 #if defined (__sequent__) && defined (_PTRDIFF_T_) 97 #undef _PTRDIFF_T_ 98 #endif 99 100 /* On VxWorks, <type/vxTypesBase.h> may have defined macros like 101 _TYPE_size_t which will typedef size_t. fixincludes patched the 102 vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is 103 not defined, and so that defining this macro defines _GCC_SIZE_T. 104 If we find that the macros are still defined at this point, we must 105 invoke them so that the type is defined as expected. */ 106 #if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_)) 107 _TYPE_ptrdiff_t; 108 #undef _TYPE_ptrdiff_t 109 #endif 110 #if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_)) 111 _TYPE_size_t; 112 #undef _TYPE_size_t 113 #endif 114 #if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_)) 115 _TYPE_wchar_t; 116 #undef _TYPE_wchar_t 117 #endif 118 119 /* In case nobody has defined these types, but we aren't running under 120 GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and 121 __WCHAR_TYPE__ have reasonable values. This can happen if the 122 parts of GCC is compiled by an older compiler, that actually 123 include gstddef.h, such as collect2. */ 124 125 /* Signed type of difference of two pointers. */ 126 127 /* Define this type if we are doing the whole job, 128 or if we want this type in particular. */ 129 #if defined (_STDDEF_H) || defined (__need_ptrdiff_t) 130 #ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */ 131 #ifndef _T_PTRDIFF_ 132 #ifndef _T_PTRDIFF 133 #ifndef __PTRDIFF_T 134 #ifndef _PTRDIFF_T_ 135 #ifndef _BSD_PTRDIFF_T_ 136 #ifndef ___int_ptrdiff_t_h 137 #ifndef _GCC_PTRDIFF_T 138 #define _PTRDIFF_T 139 #define _T_PTRDIFF_ 140 #define _T_PTRDIFF 141 #define __PTRDIFF_T 142 #define _PTRDIFF_T_ 143 #define _BSD_PTRDIFF_T_ 144 #define ___int_ptrdiff_t_h 145 #define _GCC_PTRDIFF_T 146 #ifndef __PTRDIFF_TYPE__ 147 #define __PTRDIFF_TYPE__ long int 148 #endif 149 typedef __PTRDIFF_TYPE__ ptrdiff_t; 150 #endif /* _GCC_PTRDIFF_T */ 151 #endif /* ___int_ptrdiff_t_h */ 152 #endif /* _BSD_PTRDIFF_T_ */ 153 #endif /* _PTRDIFF_T_ */ 154 #endif /* __PTRDIFF_T */ 155 #endif /* _T_PTRDIFF */ 156 #endif /* _T_PTRDIFF_ */ 157 #endif /* _PTRDIFF_T */ 158 159 /* If this symbol has done its job, get rid of it. */ 160 #undef __need_ptrdiff_t 161 162 #endif /* _STDDEF_H or __need_ptrdiff_t. */ 163 164 /* Unsigned type of `sizeof' something. */ 165 166 /* Define this type if we are doing the whole job, 167 or if we want this type in particular. */ 168 #if defined (_STDDEF_H) || defined (__need_size_t) 169 #ifndef __size_t__ /* BeOS */ 170 #ifndef __SIZE_T__ /* Cray Unicos/Mk */ 171 #ifndef _SIZE_T /* in case <sys/types.h> has defined it. */ 172 #ifndef _SYS_SIZE_T_H 173 #ifndef _T_SIZE_ 174 #ifndef _T_SIZE 175 #ifndef __SIZE_T 176 #ifndef _SIZE_T_ 177 #ifndef _BSD_SIZE_T_ 178 #ifndef _SIZE_T_DEFINED_ 179 #ifndef _SIZE_T_DEFINED 180 #ifndef _BSD_SIZE_T_DEFINED_ /* Darwin */ 181 #ifndef _SIZE_T_DECLARED /* FreeBSD 5 */ 182 #ifndef ___int_size_t_h 183 #ifndef _GCC_SIZE_T 184 #ifndef _SIZET_ 185 #ifndef __size_t 186 #define __size_t__ /* BeOS */ 187 #define __SIZE_T__ /* Cray Unicos/Mk */ 188 #define _SIZE_T 189 #define _SYS_SIZE_T_H 190 #define _T_SIZE_ 191 #define _T_SIZE 192 #define __SIZE_T 193 #define _SIZE_T_ 194 #define _BSD_SIZE_T_ 195 #define _SIZE_T_DEFINED_ 196 #define _SIZE_T_DEFINED 197 #define _BSD_SIZE_T_DEFINED_ /* Darwin */ 198 #define _SIZE_T_DECLARED /* FreeBSD 5 */ 199 #define ___int_size_t_h 200 #define _GCC_SIZE_T 201 #define _SIZET_ 202 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5) 203 /* __size_t is a typedef on FreeBSD 5!, must not trash it. */ 204 #else 205 #define __size_t 206 #endif 207 #ifndef __SIZE_TYPE__ 208 #define __SIZE_TYPE__ long unsigned int 209 #endif 210 #if !(defined (__GNUG__) && defined (size_t)) 211 typedef __SIZE_TYPE__ size_t; 212 #ifdef __BEOS__ 213 typedef long ssize_t; 214 #endif /* __BEOS__ */ 215 #endif /* !(defined (__GNUG__) && defined (size_t)) */ 216 #endif /* __size_t */ 217 #endif /* _SIZET_ */ 218 #endif /* _GCC_SIZE_T */ 219 #endif /* ___int_size_t_h */ 220 #endif /* _SIZE_T_DECLARED */ 221 #endif /* _BSD_SIZE_T_DEFINED_ */ 222 #endif /* _SIZE_T_DEFINED */ 223 #endif /* _SIZE_T_DEFINED_ */ 224 #endif /* _BSD_SIZE_T_ */ 225 #endif /* _SIZE_T_ */ 226 #endif /* __SIZE_T */ 227 #endif /* _T_SIZE */ 228 #endif /* _T_SIZE_ */ 229 #endif /* _SYS_SIZE_T_H */ 230 #endif /* _SIZE_T */ 231 #endif /* __SIZE_T__ */ 232 #endif /* __size_t__ */ 233 #undef __need_size_t 234 #endif /* _STDDEF_H or __need_size_t. */ 235 236 237 /* Wide character type. 238 Locale-writers should change this as necessary to 239 be big enough to hold unique values not between 0 and 127, 240 and not (wchar_t) -1, for each defined multibyte character. */ 241 242 /* Define this type if we are doing the whole job, 243 or if we want this type in particular. */ 244 #if defined (_STDDEF_H) || defined (__need_wchar_t) 245 #ifndef __wchar_t__ /* BeOS */ 246 #ifndef __WCHAR_T__ /* Cray Unicos/Mk */ 247 #ifndef _WCHAR_T 248 #ifndef _T_WCHAR_ 249 #ifndef _T_WCHAR 250 #ifndef __WCHAR_T 251 #ifndef _WCHAR_T_ 252 #ifndef _BSD_WCHAR_T_ 253 #ifndef _BSD_WCHAR_T_DEFINED_ /* Darwin */ 254 #ifndef _BSD_RUNE_T_DEFINED_ /* Darwin */ 255 #ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */ 256 #ifndef _WCHAR_T_DEFINED_ 257 #ifndef _WCHAR_T_DEFINED 258 #ifndef _WCHAR_T_H 259 #ifndef ___int_wchar_t_h 260 #ifndef __INT_WCHAR_T_H 261 #ifndef _GCC_WCHAR_T 262 #define __wchar_t__ /* BeOS */ 263 #define __WCHAR_T__ /* Cray Unicos/Mk */ 264 #define _WCHAR_T 265 #define _T_WCHAR_ 266 #define _T_WCHAR 267 #define __WCHAR_T 268 #define _WCHAR_T_ 269 #define _BSD_WCHAR_T_ 270 #define _WCHAR_T_DEFINED_ 271 #define _WCHAR_T_DEFINED 272 #define _WCHAR_T_H 273 #define ___int_wchar_t_h 274 #define __INT_WCHAR_T_H 275 #define _GCC_WCHAR_T 276 #define _WCHAR_T_DECLARED 277 278 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 279 instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other 280 symbols in the _FOO_T_ family, stays defined even after its 281 corresponding type is defined). If we define wchar_t, then we 282 must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if 283 we undef _WCHAR_T_, then we must also define rune_t, since 284 headers like runetype.h assume that if machine/ansi.h is included, 285 and _BSD_WCHAR_T_ is not defined, then rune_t is available. 286 machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of 287 the same type." */ 288 #ifdef _BSD_WCHAR_T_ 289 #undef _BSD_WCHAR_T_ 290 #ifdef _BSD_RUNE_T_ 291 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 292 typedef _BSD_RUNE_T_ rune_t; 293 #define _BSD_WCHAR_T_DEFINED_ 294 #define _BSD_RUNE_T_DEFINED_ /* Darwin */ 295 #if defined (__FreeBSD__) && (__FreeBSD__ < 5) 296 /* Why is this file so hard to maintain properly? In contrast to 297 the comment above regarding BSD/386 1.1, on FreeBSD for as long 298 as the symbol has existed, _BSD_RUNE_T_ must not stay defined or 299 redundant typedefs will occur when stdlib.h is included after this file. */ 300 #undef _BSD_RUNE_T_ 301 #endif 302 #endif 303 #endif 304 #endif 305 /* FreeBSD 5 can't be handled well using "traditional" logic above 306 since it no longer defines _BSD_RUNE_T_ yet still desires to export 307 rune_t in some cases... */ 308 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5) 309 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 310 #if __BSD_VISIBLE 311 #ifndef _RUNE_T_DECLARED 312 typedef __rune_t rune_t; 313 #define _RUNE_T_DECLARED 314 #endif 315 #endif 316 #endif 317 #endif 318 319 #ifndef __WCHAR_TYPE__ 320 #define __WCHAR_TYPE__ int 321 #endif 322 #ifndef __cplusplus 323 typedef __WCHAR_TYPE__ wchar_t; 324 #endif 325 #endif 326 #endif 327 #endif 328 #endif 329 #endif 330 #endif 331 #endif /* _WCHAR_T_DECLARED */ 332 #endif /* _BSD_RUNE_T_DEFINED_ */ 333 #endif 334 #endif 335 #endif 336 #endif 337 #endif 338 #endif 339 #endif 340 #endif /* __WCHAR_T__ */ 341 #endif /* __wchar_t__ */ 342 #undef __need_wchar_t 343 #endif /* _STDDEF_H or __need_wchar_t. */ 344 345 #if defined (__need_wint_t) 346 #ifndef _WINT_T 347 #define _WINT_T 348 349 #ifndef __WINT_TYPE__ 350 #define __WINT_TYPE__ unsigned int 351 #endif 352 typedef __WINT_TYPE__ wint_t; 353 #endif 354 #undef __need_wint_t 355 #endif 356 357 /* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc. 358 are already defined. */ 359 /* BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here. */ 360 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) 361 /* The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_ 362 are probably typos and should be removed before 2.8 is released. */ 363 #ifdef _GCC_PTRDIFF_T_ 364 #undef _PTRDIFF_T_ 365 #undef _BSD_PTRDIFF_T_ 366 #endif 367 #ifdef _GCC_SIZE_T_ 368 #undef _SIZE_T_ 369 #undef _BSD_SIZE_T_ 370 #endif 371 #ifdef _GCC_WCHAR_T_ 372 #undef _WCHAR_T_ 373 #undef _BSD_WCHAR_T_ 374 #endif 375 /* The following ones are the real ones. */ 376 #ifdef _GCC_PTRDIFF_T 377 #undef _PTRDIFF_T_ 378 #undef _BSD_PTRDIFF_T_ 379 #endif 380 #ifdef _GCC_SIZE_T 381 #undef _SIZE_T_ 382 #undef _BSD_SIZE_T_ 383 #endif 384 #ifdef _GCC_WCHAR_T 385 #undef _WCHAR_T_ 386 #undef _BSD_WCHAR_T_ 387 #endif 388 #endif /* _ANSI_H_ || _MACHINE_ANSI_H_ */ 389 390 #endif /* __sys_stdtypes_h */ 391 392 /* A null pointer constant. */ 393 394 #if defined (_STDDEF_H) || defined (__need_NULL) 395 #undef NULL /* in case <stdio.h> has defined it. */ 396 #ifdef __GNUG__ 397 #define NULL __null 398 #else /* G++ */ 399 #ifndef __cplusplus 400 #define NULL ((void *)0) 401 #else /* C++ */ 402 #define NULL 0 403 #endif /* C++ */ 404 #endif /* G++ */ 405 #endif /* NULL not defined and <stddef.h> or need NULL. */ 406 #undef __need_NULL 407 408 #ifdef _STDDEF_H 409 410 /* Offset of member MEMBER in a struct of type TYPE. */ 411 #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER) 412 413 #endif /* _STDDEF_H was defined this time */ 414 415 #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__ 416 || __need_XXX was not defined before */ 417
