1 /* Copyright (C) 1989-2014 Free Software Foundation, Inc. 2 3 This file is part of GCC. 4 5 GCC is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3, or (at your option) 8 any later version. 9 10 GCC is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 Under Section 7 of GPL version 3, you are granted additional 16 permissions described in the GCC Runtime Library Exception, version 17 3.1, as published by the Free Software Foundation. 18 19 You should have received a copy of the GNU General Public License and 20 a copy of the GCC Runtime Library Exception along with this program; 21 see 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 (at) 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 #define _PTRDIFF_T 137 #define _T_PTRDIFF_ 138 #define _T_PTRDIFF 139 #define __PTRDIFF_T 140 #define _PTRDIFF_T_ 141 #define _BSD_PTRDIFF_T_ 142 #define ___int_ptrdiff_t_h 143 #define _GCC_PTRDIFF_T 144 #ifndef __PTRDIFF_TYPE__ 145 #define __PTRDIFF_TYPE__ long int 146 #endif 147 typedef __PTRDIFF_TYPE__ ptrdiff_t; 148 #endif /* _GCC_PTRDIFF_T */ 149 #endif /* ___int_ptrdiff_t_h */ 150 #endif /* _BSD_PTRDIFF_T_ */ 151 #endif /* _PTRDIFF_T_ */ 152 #endif /* __PTRDIFF_T */ 153 #endif /* _T_PTRDIFF */ 154 #endif /* _T_PTRDIFF_ */ 155 #endif /* _PTRDIFF_T */ 156 157 /* If this symbol has done its job, get rid of it. */ 158 #undef __need_ptrdiff_t 159 160 #endif /* _STDDEF_H or __need_ptrdiff_t. */ 161 162 /* Unsigned type of `sizeof' something. */ 163 164 /* Define this type if we are doing the whole job, 165 or if we want this type in particular. */ 166 #if defined (_STDDEF_H) || defined (__need_size_t) 167 #ifndef __size_t__ /* BeOS */ 168 #ifndef __SIZE_T__ /* Cray Unicos/Mk */ 169 #ifndef _SIZE_T /* in case <sys/types.h> has defined it. */ 170 #ifndef _SYS_SIZE_T_H 171 #ifndef _T_SIZE_ 172 #ifndef _T_SIZE 173 #ifndef __SIZE_T 174 #ifndef _SIZE_T_ 175 #ifndef _BSD_SIZE_T_ 176 #ifndef _SIZE_T_DEFINED_ 177 #ifndef _SIZE_T_DEFINED 178 #ifndef _BSD_SIZE_T_DEFINED_ /* Darwin */ 179 #ifndef _SIZE_T_DECLARED /* FreeBSD 5 */ 180 #ifndef ___int_size_t_h 181 #ifndef _GCC_SIZE_T 182 #ifndef _SIZET_ 183 #ifndef __size_t 184 #define __size_t__ /* BeOS */ 185 #define __SIZE_T__ /* Cray Unicos/Mk */ 186 #define _SIZE_T 187 #define _SYS_SIZE_T_H 188 #define _T_SIZE_ 189 #define _T_SIZE 190 #define __SIZE_T 191 #define _SIZE_T_ 192 #define _BSD_SIZE_T_ 193 #define _SIZE_T_DEFINED_ 194 #define _SIZE_T_DEFINED 195 #define _BSD_SIZE_T_DEFINED_ /* Darwin */ 196 #define _SIZE_T_DECLARED /* FreeBSD 5 */ 197 #define ___int_size_t_h 198 #define _GCC_SIZE_T 199 #define _SIZET_ 200 #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \ 201 || defined(__FreeBSD_kernel__) 202 /* __size_t is a typedef on FreeBSD 5, must not trash it. */ 203 #elif defined (__VMS__) 204 /* __size_t is also a typedef on VMS. */ 205 #else 206 #define __size_t 207 #endif 208 #ifndef __SIZE_TYPE__ 209 #define __SIZE_TYPE__ long unsigned int 210 #endif 211 #if !(defined (__GNUG__) && defined (size_t)) 212 typedef __SIZE_TYPE__ size_t; 213 #ifdef __BEOS__ 214 typedef long ssize_t; 215 #endif /* __BEOS__ */ 216 #endif /* !(defined (__GNUG__) && defined (size_t)) */ 217 #endif /* __size_t */ 218 #endif /* _SIZET_ */ 219 #endif /* _GCC_SIZE_T */ 220 #endif /* ___int_size_t_h */ 221 #endif /* _SIZE_T_DECLARED */ 222 #endif /* _BSD_SIZE_T_DEFINED_ */ 223 #endif /* _SIZE_T_DEFINED */ 224 #endif /* _SIZE_T_DEFINED_ */ 225 #endif /* _BSD_SIZE_T_ */ 226 #endif /* _SIZE_T_ */ 227 #endif /* __SIZE_T */ 228 #endif /* _T_SIZE */ 229 #endif /* _T_SIZE_ */ 230 #endif /* _SYS_SIZE_T_H */ 231 #endif /* _SIZE_T */ 232 #endif /* __SIZE_T__ */ 233 #endif /* __size_t__ */ 234 #undef __need_size_t 235 #endif /* _STDDEF_H or __need_size_t. */ 236 237 238 /* Wide character type. 239 Locale-writers should change this as necessary to 240 be big enough to hold unique values not between 0 and 127, 241 and not (wchar_t) -1, for each defined multibyte character. */ 242 243 /* Define this type if we are doing the whole job, 244 or if we want this type in particular. */ 245 #if defined (_STDDEF_H) || defined (__need_wchar_t) 246 #ifndef __wchar_t__ /* BeOS */ 247 #ifndef __WCHAR_T__ /* Cray Unicos/Mk */ 248 #ifndef _WCHAR_T 249 #ifndef _T_WCHAR_ 250 #ifndef _T_WCHAR 251 #ifndef __WCHAR_T 252 #ifndef _WCHAR_T_ 253 #ifndef _BSD_WCHAR_T_ 254 #ifndef _BSD_WCHAR_T_DEFINED_ /* Darwin */ 255 #ifndef _BSD_RUNE_T_DEFINED_ /* Darwin */ 256 #ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */ 257 #ifndef _WCHAR_T_DEFINED_ 258 #ifndef _WCHAR_T_DEFINED 259 #ifndef _WCHAR_T_H 260 #ifndef ___int_wchar_t_h 261 #ifndef __INT_WCHAR_T_H 262 #ifndef _GCC_WCHAR_T 263 #define __wchar_t__ /* BeOS */ 264 #define __WCHAR_T__ /* Cray Unicos/Mk */ 265 #define _WCHAR_T 266 #define _T_WCHAR_ 267 #define _T_WCHAR 268 #define __WCHAR_T 269 #define _WCHAR_T_ 270 #define _BSD_WCHAR_T_ 271 #define _WCHAR_T_DEFINED_ 272 #define _WCHAR_T_DEFINED 273 #define _WCHAR_T_H 274 #define ___int_wchar_t_h 275 #define __INT_WCHAR_T_H 276 #define _GCC_WCHAR_T 277 #define _WCHAR_T_DECLARED 278 279 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 280 instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other 281 symbols in the _FOO_T_ family, stays defined even after its 282 corresponding type is defined). If we define wchar_t, then we 283 must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if 284 we undef _WCHAR_T_, then we must also define rune_t, since 285 headers like runetype.h assume that if machine/ansi.h is included, 286 and _BSD_WCHAR_T_ is not defined, then rune_t is available. 287 machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of 288 the same type." */ 289 #ifdef _BSD_WCHAR_T_ 290 #undef _BSD_WCHAR_T_ 291 #ifdef _BSD_RUNE_T_ 292 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 293 typedef _BSD_RUNE_T_ rune_t; 294 #define _BSD_WCHAR_T_DEFINED_ 295 #define _BSD_RUNE_T_DEFINED_ /* Darwin */ 296 #if defined (__FreeBSD__) && (__FreeBSD__ < 5) 297 /* Why is this file so hard to maintain properly? In contrast to 298 the comment above regarding BSD/386 1.1, on FreeBSD for as long 299 as the symbol has existed, _BSD_RUNE_T_ must not stay defined or 300 redundant typedefs will occur when stdlib.h is included after this file. */ 301 #undef _BSD_RUNE_T_ 302 #endif 303 #endif 304 #endif 305 #endif 306 /* FreeBSD 5 can't be handled well using "traditional" logic above 307 since it no longer defines _BSD_RUNE_T_ yet still desires to export 308 rune_t in some cases... */ 309 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5) 310 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 311 #if __BSD_VISIBLE 312 #ifndef _RUNE_T_DECLARED 313 typedef __rune_t rune_t; 314 #define _RUNE_T_DECLARED 315 #endif 316 #endif 317 #endif 318 #endif 319 320 #ifndef __WCHAR_TYPE__ 321 #define __WCHAR_TYPE__ int 322 #endif 323 #ifndef __cplusplus 324 typedef __WCHAR_TYPE__ wchar_t; 325 #endif 326 #endif 327 #endif 328 #endif 329 #endif 330 #endif 331 #endif 332 #endif /* _WCHAR_T_DECLARED */ 333 #endif /* _BSD_RUNE_T_DEFINED_ */ 334 #endif 335 #endif 336 #endif 337 #endif 338 #endif 339 #endif 340 #endif 341 #endif /* __WCHAR_T__ */ 342 #endif /* __wchar_t__ */ 343 #undef __need_wchar_t 344 #endif /* _STDDEF_H or __need_wchar_t. */ 345 346 #if defined (__need_wint_t) 347 #ifndef _WINT_T 348 #define _WINT_T 349 350 #ifndef __WINT_TYPE__ 351 #define __WINT_TYPE__ unsigned int 352 #endif 353 typedef __WINT_TYPE__ wint_t; 354 #endif 355 #undef __need_wint_t 356 #endif 357 358 /* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc. 359 are already defined. */ 360 /* BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here. */ 361 /* NetBSD 5 requires the I386_ANSI_H and X86_64_ANSI_H checks here. */ 362 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) || defined(_X86_64_ANSI_H_) || defined(_I386_ANSI_H_) 363 /* The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_ 364 are probably typos and should be removed before 2.8 is released. */ 365 #ifdef _GCC_PTRDIFF_T_ 366 #undef _PTRDIFF_T_ 367 #undef _BSD_PTRDIFF_T_ 368 #endif 369 #ifdef _GCC_SIZE_T_ 370 #undef _SIZE_T_ 371 #undef _BSD_SIZE_T_ 372 #endif 373 #ifdef _GCC_WCHAR_T_ 374 #undef _WCHAR_T_ 375 #undef _BSD_WCHAR_T_ 376 #endif 377 /* The following ones are the real ones. */ 378 #ifdef _GCC_PTRDIFF_T 379 #undef _PTRDIFF_T_ 380 #undef _BSD_PTRDIFF_T_ 381 #endif 382 #ifdef _GCC_SIZE_T 383 #undef _SIZE_T_ 384 #undef _BSD_SIZE_T_ 385 #endif 386 #ifdef _GCC_WCHAR_T 387 #undef _WCHAR_T_ 388 #undef _BSD_WCHAR_T_ 389 #endif 390 #endif /* _ANSI_H_ || _MACHINE_ANSI_H_ || _X86_64_ANSI_H_ || _I386_ANSI_H_ */ 391 392 #endif /* __sys_stdtypes_h */ 393 394 /* A null pointer constant. */ 395 396 #if defined (_STDDEF_H) || defined (__need_NULL) 397 #undef NULL /* in case <stdio.h> has defined it. */ 398 #ifdef __GNUG__ 399 #define NULL __null 400 #else /* G++ */ 401 #ifndef __cplusplus 402 #define NULL ((void *)0) 403 #else /* C++ */ 404 #define NULL 0 405 #endif /* C++ */ 406 #endif /* G++ */ 407 #endif /* NULL not defined and <stddef.h> or need NULL. */ 408 #undef __need_NULL 409 410 #ifdef _STDDEF_H 411 412 /* Offset of member MEMBER in a struct of type TYPE. */ 413 #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER) 414 415 #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \ 416 || (defined(__cplusplus) && __cplusplus >= 201103L) 417 #ifndef _GCC_MAX_ALIGN_T 418 #define _GCC_MAX_ALIGN_T 419 /* Type whose alignment is supported in every context and is at least 420 as great as that of any standard type not using alignment 421 specifiers. */ 422 typedef struct { 423 long long __max_align_ll __attribute__((__aligned__(__alignof__(long long)))); 424 long double __max_align_ld __attribute__((__aligned__(__alignof__(long double)))); 425 } max_align_t; 426 #endif 427 #endif /* C11 or C++11. */ 428 429 #if defined(__cplusplus) && __cplusplus >= 201103L 430 #ifndef _GXX_NULLPTR_T 431 #define _GXX_NULLPTR_T 432 typedef decltype(nullptr) nullptr_t; 433 #endif 434 #endif /* C++11. */ 435 436 #endif /* _STDDEF_H was defined this time */ 437 438 #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__ 439 || __need_XXX was not defined before */ 440
