1 /* Copyright (C) 1989, 1997, 1998, 1999, 2000, 2002, 2004, 2009, 2011 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 NetBSD defines _I386_ANSI_H_ and _X86_64_ANSI_H_ instead of _ANSI_H_ */ 66 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) || defined(_X86_64_ANSI_H_) || defined(_I386_ANSI_H_) 67 #if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_) 68 #define _SIZE_T 69 #endif 70 #if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_) 71 #define _PTRDIFF_T 72 #endif 73 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 74 instead of _WCHAR_T_. */ 75 #if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_) 76 #ifndef _BSD_WCHAR_T_ 77 #define _WCHAR_T 78 #endif 79 #endif 80 /* Undef _FOO_T_ if we are supposed to define foo_t. */ 81 #if defined (__need_ptrdiff_t) || defined (_STDDEF_H_) 82 #undef _PTRDIFF_T_ 83 #undef _BSD_PTRDIFF_T_ 84 #endif 85 #if defined (__need_size_t) || defined (_STDDEF_H_) 86 #undef _SIZE_T_ 87 #undef _BSD_SIZE_T_ 88 #endif 89 #if defined (__need_wchar_t) || defined (_STDDEF_H_) 90 #undef _WCHAR_T_ 91 #undef _BSD_WCHAR_T_ 92 #endif 93 #endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) || defined(_X86_64_ANSI_H_) || defined(_I386_ANSI_H_) */ 94 95 /* Sequent's header files use _PTRDIFF_T_ in some conflicting way. 96 Just ignore it. */ 97 #if defined (__sequent__) && defined (_PTRDIFF_T_) 98 #undef _PTRDIFF_T_ 99 #endif 100 101 /* On VxWorks, <type/vxTypesBase.h> may have defined macros like 102 _TYPE_size_t which will typedef size_t. fixincludes patched the 103 vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is 104 not defined, and so that defining this macro defines _GCC_SIZE_T. 105 If we find that the macros are still defined at this point, we must 106 invoke them so that the type is defined as expected. */ 107 #if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_)) 108 _TYPE_ptrdiff_t; 109 #undef _TYPE_ptrdiff_t 110 #endif 111 #if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_)) 112 _TYPE_size_t; 113 #undef _TYPE_size_t 114 #endif 115 #if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_)) 116 _TYPE_wchar_t; 117 #undef _TYPE_wchar_t 118 #endif 119 120 /* In case nobody has defined these types, but we aren't running under 121 GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and 122 __WCHAR_TYPE__ have reasonable values. This can happen if the 123 parts of GCC is compiled by an older compiler, that actually 124 include gstddef.h, such as collect2. */ 125 126 /* Signed type of difference of two pointers. */ 127 128 /* Define this type if we are doing the whole job, 129 or if we want this type in particular. */ 130 #if defined (_STDDEF_H) || defined (__need_ptrdiff_t) 131 #ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */ 132 #ifndef _T_PTRDIFF_ 133 #ifndef _T_PTRDIFF 134 #ifndef __PTRDIFF_T 135 #ifndef _PTRDIFF_T_ 136 #ifndef _BSD_PTRDIFF_T_ 137 #ifndef ___int_ptrdiff_t_h 138 #ifndef _GCC_PTRDIFF_T 139 #define _PTRDIFF_T 140 #define _T_PTRDIFF_ 141 #define _T_PTRDIFF 142 #define __PTRDIFF_T 143 #define _PTRDIFF_T_ 144 #define _BSD_PTRDIFF_T_ 145 #define ___int_ptrdiff_t_h 146 #define _GCC_PTRDIFF_T 147 #ifndef __PTRDIFF_TYPE__ 148 #define __PTRDIFF_TYPE__ long int 149 #endif 150 typedef __PTRDIFF_TYPE__ ptrdiff_t; 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(__FreeBSD_kernel__) 205 /* __size_t is a typedef on FreeBSD 5, must not trash it. */ 206 #else 207 #define __size_t 208 #endif 209 #ifndef __SIZE_TYPE__ 210 #define __SIZE_TYPE__ long unsigned int 211 #endif 212 #if !(defined (__GNUG__) && defined (size_t)) 213 typedef __SIZE_TYPE__ size_t; 214 #ifdef __BEOS__ 215 typedef long ssize_t; 216 #endif /* __BEOS__ */ 217 #endif /* !(defined (__GNUG__) && defined (size_t)) */ 218 #endif /* __size_t */ 219 #endif /* _SIZET_ */ 220 #endif /* _GCC_SIZE_T */ 221 #endif /* ___int_size_t_h */ 222 #endif /* _SIZE_T_DECLARED */ 223 #endif /* _BSD_SIZE_T_DEFINED_ */ 224 #endif /* _SIZE_T_DEFINED */ 225 #endif /* _SIZE_T_DEFINED_ */ 226 #endif /* _BSD_SIZE_T_ */ 227 #endif /* _SIZE_T_ */ 228 #endif /* __SIZE_T */ 229 #endif /* _T_SIZE */ 230 #endif /* _T_SIZE_ */ 231 #endif /* _SYS_SIZE_T_H */ 232 #endif /* _SIZE_T */ 233 #endif /* __SIZE_T__ */ 234 #endif /* __size_t__ */ 235 #undef __need_size_t 236 #endif /* _STDDEF_H or __need_size_t. */ 237 238 239 /* Wide character type. 240 Locale-writers should change this as necessary to 241 be big enough to hold unique values not between 0 and 127, 242 and not (wchar_t) -1, for each defined multibyte character. */ 243 244 /* Define this type if we are doing the whole job, 245 or if we want this type in particular. */ 246 #if defined (_STDDEF_H) || defined (__need_wchar_t) 247 #ifndef __wchar_t__ /* BeOS */ 248 #ifndef __WCHAR_T__ /* Cray Unicos/Mk */ 249 #ifndef _WCHAR_T 250 #ifndef _T_WCHAR_ 251 #ifndef _T_WCHAR 252 #ifndef __WCHAR_T 253 #ifndef _WCHAR_T_ 254 #ifndef _BSD_WCHAR_T_ 255 #ifndef _BSD_WCHAR_T_DEFINED_ /* Darwin */ 256 #ifndef _BSD_RUNE_T_DEFINED_ /* Darwin */ 257 #ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */ 258 #ifndef _WCHAR_T_DEFINED_ 259 #ifndef _WCHAR_T_DEFINED 260 #ifndef _WCHAR_T_H 261 #ifndef ___int_wchar_t_h 262 #ifndef __INT_WCHAR_T_H 263 #ifndef _GCC_WCHAR_T 264 #define __wchar_t__ /* BeOS */ 265 #define __WCHAR_T__ /* Cray Unicos/Mk */ 266 #define _WCHAR_T 267 #define _T_WCHAR_ 268 #define _T_WCHAR 269 #define __WCHAR_T 270 #define _WCHAR_T_ 271 #define _BSD_WCHAR_T_ 272 #define _WCHAR_T_DEFINED_ 273 #define _WCHAR_T_DEFINED 274 #define _WCHAR_T_H 275 #define ___int_wchar_t_h 276 #define __INT_WCHAR_T_H 277 #define _GCC_WCHAR_T 278 #define _WCHAR_T_DECLARED 279 280 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 281 instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other 282 symbols in the _FOO_T_ family, stays defined even after its 283 corresponding type is defined). If we define wchar_t, then we 284 must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if 285 we undef _WCHAR_T_, then we must also define rune_t, since 286 headers like runetype.h assume that if machine/ansi.h is included, 287 and _BSD_WCHAR_T_ is not defined, then rune_t is available. 288 machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of 289 the same type." */ 290 #ifdef _BSD_WCHAR_T_ 291 #undef _BSD_WCHAR_T_ 292 #ifdef _BSD_RUNE_T_ 293 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 294 typedef _BSD_RUNE_T_ rune_t; 295 #define _BSD_WCHAR_T_DEFINED_ 296 #define _BSD_RUNE_T_DEFINED_ /* Darwin */ 297 #if defined (__FreeBSD__) && (__FreeBSD__ < 5) 298 /* Why is this file so hard to maintain properly? In contrast to 299 the comment above regarding BSD/386 1.1, on FreeBSD for as long 300 as the symbol has existed, _BSD_RUNE_T_ must not stay defined or 301 redundant typedefs will occur when stdlib.h is included after this file. */ 302 #undef _BSD_RUNE_T_ 303 #endif 304 #endif 305 #endif 306 #endif 307 /* FreeBSD 5 can't be handled well using "traditional" logic above 308 since it no longer defines _BSD_RUNE_T_ yet still desires to export 309 rune_t in some cases... */ 310 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5) 311 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 312 #if __BSD_VISIBLE 313 #ifndef _RUNE_T_DECLARED 314 typedef __rune_t rune_t; 315 #define _RUNE_T_DECLARED 316 #endif 317 #endif 318 #endif 319 #endif 320 321 #ifndef __WCHAR_TYPE__ 322 #define __WCHAR_TYPE__ int 323 #endif 324 #ifndef __cplusplus 325 typedef __WCHAR_TYPE__ wchar_t; 326 #endif 327 #endif 328 #endif 329 #endif 330 #endif 331 #endif 332 #endif 333 #endif /* _WCHAR_T_DECLARED */ 334 #endif /* _BSD_RUNE_T_DEFINED_ */ 335 #endif 336 #endif 337 #endif 338 #endif 339 #endif 340 #endif 341 #endif 342 #endif /* __WCHAR_T__ */ 343 #endif /* __wchar_t__ */ 344 #undef __need_wchar_t 345 #endif /* _STDDEF_H or __need_wchar_t. */ 346 347 #if defined (__need_wint_t) 348 #ifndef _WINT_T 349 #define _WINT_T 350 351 #ifndef __WINT_TYPE__ 352 #define __WINT_TYPE__ unsigned int 353 #endif 354 typedef __WINT_TYPE__ wint_t; 355 #endif 356 #undef __need_wint_t 357 #endif 358 359 /* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc. 360 are already defined. */ 361 /* BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here. */ 362 /* NetBSD 5 requires the I386_ANSI_H and X86_64_ANSI_H checks here. */ 363 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) || defined(_X86_64_ANSI_H_) || defined(_I386_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_ || _X86_64_ANSI_H_ || _I386_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 #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \ 417 || (defined(__cplusplus) && __cplusplus >= 201103L) 418 #ifndef _GCC_MAX_ALIGN_T 419 #define _GCC_MAX_ALIGN_T 420 /* Type whose alignment is supported in every context and is at least 421 as great as that of any standard type not using alignment 422 specifiers. */ 423 typedef struct { 424 long long __max_align_ll __attribute__((__aligned__(__alignof__(long long)))); 425 long double __max_align_ld __attribute__((__aligned__(__alignof__(long double)))); 426 } max_align_t; 427 #endif 428 #endif /* C11 or C++11. */ 429 430 #endif /* _STDDEF_H was defined this time */ 431 432 #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__ 433 || __need_XXX was not defined before */ 434
