1 /* Copyright (C) 1989-2019 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@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 #if defined(__NetBSD__) 50 #include <machine/ansi.h> 51 #endif 52 53 #if defined (__FreeBSD__) 54 #include <sys/_types.h> 55 #endif 56 57 #if defined(__NetBSD__) 58 #if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_) 59 #define _SIZE_T 60 #endif 61 #if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_) 62 #define _PTRDIFF_T 63 #endif 64 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 65 instead of _WCHAR_T_. */ 66 #if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_) 67 #ifndef _BSD_WCHAR_T_ 68 #define _WCHAR_T 69 #endif 70 #endif 71 /* Undef _FOO_T_ if we are supposed to define foo_t. */ 72 #if defined (__need_ptrdiff_t) || defined (_STDDEF_H_) 73 #undef _PTRDIFF_T_ 74 #undef _BSD_PTRDIFF_T_ 75 #endif 76 #if defined (__need_size_t) || defined (_STDDEF_H_) 77 #undef _SIZE_T_ 78 #undef _BSD_SIZE_T_ 79 #endif 80 #if defined (__need_wchar_t) || defined (_STDDEF_H_) 81 #undef _WCHAR_T_ 82 #undef _BSD_WCHAR_T_ 83 #endif 84 #endif /* defined(__NetBSD__) */ 85 86 /* Sequent's header files use _PTRDIFF_T_ in some conflicting way. 87 Just ignore it. */ 88 #if defined (__sequent__) && defined (_PTRDIFF_T_) 89 #undef _PTRDIFF_T_ 90 #endif 91 92 /* On VxWorks, <type/vxTypesBase.h> may have defined macros like 93 _TYPE_size_t which will typedef size_t. fixincludes patched the 94 vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is 95 not defined, and so that defining this macro defines _GCC_SIZE_T. 96 If we find that the macros are still defined at this point, we must 97 invoke them so that the type is defined as expected. */ 98 #if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_)) 99 _TYPE_ptrdiff_t; 100 #undef _TYPE_ptrdiff_t 101 #endif 102 #if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_)) 103 _TYPE_size_t; 104 #undef _TYPE_size_t 105 #endif 106 #if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_)) 107 _TYPE_wchar_t; 108 #undef _TYPE_wchar_t 109 #endif 110 111 /* In case nobody has defined these types, but we aren't running under 112 GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and 113 __WCHAR_TYPE__ have reasonable values. This can happen if the 114 parts of GCC is compiled by an older compiler, that actually 115 include gstddef.h, such as collect2. */ 116 117 /* Signed type of difference of two pointers. */ 118 119 /* Define this type if we are doing the whole job, 120 or if we want this type in particular. */ 121 #if defined (_STDDEF_H) || defined (__need_ptrdiff_t) 122 #ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */ 123 #ifndef _T_PTRDIFF_ 124 #ifndef _T_PTRDIFF 125 #ifndef __PTRDIFF_T 126 #ifndef _PTRDIFF_T_ 127 #ifndef _BSD_PTRDIFF_T_ 128 #ifndef ___int_ptrdiff_t_h 129 #ifndef _GCC_PTRDIFF_T 130 #ifndef _PTRDIFF_T_DECLARED /* DragonFly */ 131 #define _PTRDIFF_T 132 #define _T_PTRDIFF_ 133 #define _T_PTRDIFF 134 #define __PTRDIFF_T 135 #define _PTRDIFF_T_ 136 #define _BSD_PTRDIFF_T_ 137 #define ___int_ptrdiff_t_h 138 #define _GCC_PTRDIFF_T 139 #define _PTRDIFF_T_DECLARED 140 #ifndef __PTRDIFF_TYPE__ 141 #define __PTRDIFF_TYPE__ long int 142 #endif 143 typedef __PTRDIFF_TYPE__ ptrdiff_t; 144 #endif /* _PTRDIFF_T_DECLARED */ 145 #endif /* _GCC_PTRDIFF_T */ 146 #endif /* ___int_ptrdiff_t_h */ 147 #endif /* _BSD_PTRDIFF_T_ */ 148 #endif /* _PTRDIFF_T_ */ 149 #endif /* __PTRDIFF_T */ 150 #endif /* _T_PTRDIFF */ 151 #endif /* _T_PTRDIFF_ */ 152 #endif /* _PTRDIFF_T */ 153 154 /* If this symbol has done its job, get rid of it. */ 155 #undef __need_ptrdiff_t 156 157 #endif /* _STDDEF_H or __need_ptrdiff_t. */ 158 159 /* Unsigned type of `sizeof' something. */ 160 161 /* Define this type if we are doing the whole job, 162 or if we want this type in particular. */ 163 #if defined (_STDDEF_H) || defined (__need_size_t) 164 #ifndef __size_t__ /* BeOS */ 165 #ifndef __SIZE_T__ /* Cray Unicos/Mk */ 166 #ifndef _SIZE_T /* in case <sys/types.h> has defined it. */ 167 #ifndef _SYS_SIZE_T_H 168 #ifndef _T_SIZE_ 169 #ifndef _T_SIZE 170 #ifndef __SIZE_T 171 #ifndef _SIZE_T_ 172 #ifndef _BSD_SIZE_T_ 173 #ifndef _SIZE_T_DEFINED_ 174 #ifndef _SIZE_T_DEFINED 175 #ifndef _BSD_SIZE_T_DEFINED_ /* Darwin */ 176 #ifndef _SIZE_T_DECLARED /* FreeBSD 5 */ 177 #ifndef ___int_size_t_h 178 #ifndef _GCC_SIZE_T 179 #ifndef _SIZET_ 180 #ifndef __size_t 181 #define __size_t__ /* BeOS */ 182 #define __SIZE_T__ /* Cray Unicos/Mk */ 183 #define _SIZE_T 184 #define _SYS_SIZE_T_H 185 #define _T_SIZE_ 186 #define _T_SIZE 187 #define __SIZE_T 188 #define _SIZE_T_ 189 #define _BSD_SIZE_T_ 190 #define _SIZE_T_DEFINED_ 191 #define _SIZE_T_DEFINED 192 #define _BSD_SIZE_T_DEFINED_ /* Darwin */ 193 #define _SIZE_T_DECLARED /* FreeBSD 5 */ 194 #define ___int_size_t_h 195 #define _GCC_SIZE_T 196 #define _SIZET_ 197 #if defined (__FreeBSD__) \ 198 || defined(__DragonFly__) \ 199 || defined(__FreeBSD_kernel__) \ 200 || defined(__VMS__) 201 /* __size_t is a typedef, must not trash it. */ 202 #else 203 #define __size_t 204 #endif 205 #ifndef __SIZE_TYPE__ 206 #define __SIZE_TYPE__ long unsigned int 207 #endif 208 #if !(defined (__GNUG__) && defined (size_t)) 209 typedef __SIZE_TYPE__ size_t; 210 #ifdef __BEOS__ 211 typedef long ssize_t; 212 #endif /* __BEOS__ */ 213 #endif /* !(defined (__GNUG__) && defined (size_t)) */ 214 #endif /* __size_t */ 215 #endif /* _SIZET_ */ 216 #endif /* _GCC_SIZE_T */ 217 #endif /* ___int_size_t_h */ 218 #endif /* _SIZE_T_DECLARED */ 219 #endif /* _BSD_SIZE_T_DEFINED_ */ 220 #endif /* _SIZE_T_DEFINED */ 221 #endif /* _SIZE_T_DEFINED_ */ 222 #endif /* _BSD_SIZE_T_ */ 223 #endif /* _SIZE_T_ */ 224 #endif /* __SIZE_T */ 225 #endif /* _T_SIZE */ 226 #endif /* _T_SIZE_ */ 227 #endif /* _SYS_SIZE_T_H */ 228 #endif /* _SIZE_T */ 229 #endif /* __SIZE_T__ */ 230 #endif /* __size_t__ */ 231 #undef __need_size_t 232 #endif /* _STDDEF_H or __need_size_t. */ 233 234 235 /* Wide character type. 236 Locale-writers should change this as necessary to 237 be big enough to hold unique values not between 0 and 127, 238 and not (wchar_t) -1, for each defined multibyte character. */ 239 240 /* Define this type if we are doing the whole job, 241 or if we want this type in particular. */ 242 #if defined (_STDDEF_H) || defined (__need_wchar_t) 243 #ifndef __wchar_t__ /* BeOS */ 244 #ifndef __WCHAR_T__ /* Cray Unicos/Mk */ 245 #ifndef _WCHAR_T 246 #ifndef _T_WCHAR_ 247 #ifndef _T_WCHAR 248 #ifndef __WCHAR_T 249 #ifndef _WCHAR_T_ 250 #ifndef _BSD_WCHAR_T_ 251 #ifndef _BSD_WCHAR_T_DEFINED_ /* Darwin */ 252 #ifndef _BSD_RUNE_T_DEFINED_ /* Darwin */ 253 #ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */ 254 #ifndef _WCHAR_T_DEFINED_ 255 #ifndef _WCHAR_T_DEFINED 256 #ifndef _WCHAR_T_H 257 #ifndef ___int_wchar_t_h 258 #ifndef __INT_WCHAR_T_H 259 #ifndef _GCC_WCHAR_T 260 #define __wchar_t__ /* BeOS */ 261 #define __WCHAR_T__ /* Cray Unicos/Mk */ 262 #define _WCHAR_T 263 #define _T_WCHAR_ 264 #define _T_WCHAR 265 #define __WCHAR_T 266 #define _WCHAR_T_ 267 #define _BSD_WCHAR_T_ 268 #define _WCHAR_T_DEFINED_ 269 #define _WCHAR_T_DEFINED 270 #define _WCHAR_T_H 271 #define ___int_wchar_t_h 272 #define __INT_WCHAR_T_H 273 #define _GCC_WCHAR_T 274 #define _WCHAR_T_DECLARED 275 276 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_ 277 instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other 278 symbols in the _FOO_T_ family, stays defined even after its 279 corresponding type is defined). If we define wchar_t, then we 280 must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if 281 we undef _WCHAR_T_, then we must also define rune_t, since 282 headers like runetype.h assume that if machine/ansi.h is included, 283 and _BSD_WCHAR_T_ is not defined, then rune_t is available. 284 machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of 285 the same type." */ 286 #ifdef _BSD_WCHAR_T_ 287 #undef _BSD_WCHAR_T_ 288 #ifdef _BSD_RUNE_T_ 289 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 290 typedef _BSD_RUNE_T_ rune_t; 291 #define _BSD_WCHAR_T_DEFINED_ 292 #define _BSD_RUNE_T_DEFINED_ /* Darwin */ 293 #if defined (__FreeBSD__) && (__FreeBSD__ < 5) 294 /* Why is this file so hard to maintain properly? In contrast to 295 the comment above regarding BSD/386 1.1, on FreeBSD for as long 296 as the symbol has existed, _BSD_RUNE_T_ must not stay defined or 297 redundant typedefs will occur when stdlib.h is included after this file. */ 298 #undef _BSD_RUNE_T_ 299 #endif 300 #endif 301 #endif 302 #endif 303 /* FreeBSD 5 can't be handled well using "traditional" logic above 304 since it no longer defines _BSD_RUNE_T_ yet still desires to export 305 rune_t in some cases... */ 306 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5) 307 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE) 308 #if __BSD_VISIBLE 309 #ifndef _RUNE_T_DECLARED 310 typedef __rune_t rune_t; 311 #define _RUNE_T_DECLARED 312 #endif 313 #endif 314 #endif 315 #endif 316 317 #ifndef __WCHAR_TYPE__ 318 #define __WCHAR_TYPE__ int 319 #endif 320 #ifndef __cplusplus 321 typedef __WCHAR_TYPE__ wchar_t; 322 #endif 323 #endif 324 #endif 325 #endif 326 #endif 327 #endif 328 #endif 329 #endif /* _WCHAR_T_DECLARED */ 330 #endif /* _BSD_RUNE_T_DEFINED_ */ 331 #endif 332 #endif 333 #endif 334 #endif 335 #endif 336 #endif 337 #endif 338 #endif /* __WCHAR_T__ */ 339 #endif /* __wchar_t__ */ 340 #undef __need_wchar_t 341 #endif /* _STDDEF_H or __need_wchar_t. */ 342 343 #if defined (__need_wint_t) 344 #ifndef _WINT_T 345 #define _WINT_T 346 347 #ifndef __WINT_TYPE__ 348 #define __WINT_TYPE__ unsigned int 349 #endif 350 typedef __WINT_TYPE__ wint_t; 351 #endif 352 #undef __need_wint_t 353 #endif 354 355 #if defined(__NetBSD__) 356 /* The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_ 357 are probably typos and should be removed before 2.8 is released. */ 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 /* The following ones are the real ones. */ 371 #ifdef _GCC_PTRDIFF_T 372 #undef _PTRDIFF_T_ 373 #undef _BSD_PTRDIFF_T_ 374 #endif 375 #ifdef _GCC_SIZE_T 376 #undef _SIZE_T_ 377 #undef _BSD_SIZE_T_ 378 #endif 379 #ifdef _GCC_WCHAR_T 380 #undef _WCHAR_T_ 381 #undef _BSD_WCHAR_T_ 382 #endif 383 #endif /* __NetBSD__ */ 384 385 #endif /* __sys_stdtypes_h */ 386 387 /* A null pointer constant. */ 388 389 #if defined (_STDDEF_H) || defined (__need_NULL) 390 #undef NULL /* in case <stdio.h> has defined it. */ 391 #ifdef __GNUG__ 392 #define NULL __null 393 #else /* G++ */ 394 #ifndef __cplusplus 395 #define NULL ((void *)0) 396 #else /* C++ */ 397 #define NULL 0 398 #endif /* C++ */ 399 #endif /* G++ */ 400 #endif /* NULL not defined and <stddef.h> or need NULL. */ 401 #undef __need_NULL 402 403 #ifdef _STDDEF_H 404 405 /* Offset of member MEMBER in a struct of type TYPE. */ 406 #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER) 407 408 #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \ 409 || (defined(__cplusplus) && __cplusplus >= 201103L) 410 #ifndef _GCC_MAX_ALIGN_T 411 #define _GCC_MAX_ALIGN_T 412 /* Type whose alignment is supported in every context and is at least 413 as great as that of any standard type not using alignment 414 specifiers. */ 415 typedef struct { 416 long long __max_align_ll __attribute__((__aligned__(__alignof__(long long)))); 417 long double __max_align_ld __attribute__((__aligned__(__alignof__(long double)))); 418 /* _Float128 is defined as a basic type, so max_align_t must be 419 sufficiently aligned for it. This code must work in C++, so we 420 use __float128 here; that is only available on some 421 architectures, but only on i386 is extra alignment needed for 422 __float128. */ 423 #ifdef __i386__ 424 __float128 __max_align_f128 __attribute__((__aligned__(__alignof(__float128)))); 425 #endif 426 } max_align_t; 427 #endif 428 #endif /* C11 or C++11. */ 429 430 #if defined(__cplusplus) && __cplusplus >= 201103L 431 #ifndef _GXX_NULLPTR_T 432 #define _GXX_NULLPTR_T 433 typedef decltype(nullptr) nullptr_t; 434 #endif 435 #endif /* C++11. */ 436 437 #endif /* _STDDEF_H was defined this time */ 438 439 #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__ 440 || __need_XXX was not defined before */ 441