Open64: osprey-gcc-4.2.0/gcc/ginclude/stddef.h Source File

00001 /* Copyright (C) 1989, 1997, 1998, 1999, 2000, 2002, 2004
00002    Free Software Foundation, Inc.
00003 
00004 This file is part of GCC.
00005 
00006 GCC is free software; you can redistribute it and/or modify
00007 it under the terms of the GNU General Public License as published by
00008 the Free Software Foundation; either version 2, or (at your option)
00009 any later version.
00010 
00011 GCC is distributed in the hope that it will be useful,
00012 but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 GNU General Public License for more details.
00015 
00016 You should have received a copy of the GNU General Public License
00017 along with GCC; see the file COPYING.  If not, write to
00018 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
00019 Boston, MA 02110-1301, USA.  */
00020 
00021 /* As a special exception, if you include this header file into source
00022    files compiled by GCC, this header file does not by itself cause
00023    the resulting executable to be covered by the GNU General Public
00024    License.  This exception does not however invalidate any other
00025    reasons why the executable file might be covered by the GNU General
00026    Public License.  */
00027 
00028 /*
00029  * ISO C Standard:  7.17  Common definitions  <stddef.h>
00030  */
00031 #if (!defined(_STDDEF_H) && !defined(_STDDEF_H_) && !defined(_ANSI_STDDEF_H) \
00032      && !defined(__STDDEF_H__)) \
00033     || defined(__need_wchar_t) || defined(__need_size_t) \
00034     || defined(__need_ptrdiff_t) || defined(__need_NULL) \
00035     || defined(__need_wint_t)
00036 
00037 /* Any one of these symbols __need_* means that GNU libc
00038    wants us just to define one data type.  So don't define
00039    the symbols that indicate this file's entire job has been done.  */
00040 #if (!defined(__need_wchar_t) && !defined(__need_size_t)  \
00041      && !defined(__need_ptrdiff_t) && !defined(__need_NULL) \
00042      && !defined(__need_wint_t))
00043 #define _STDDEF_H
00044 #define _STDDEF_H_
00045 /* snaroff@next.com says the NeXT needs this.  */
00046 #define _ANSI_STDDEF_H
00047 /* Irix 5.1 needs this.  */
00048 #define __STDDEF_H__
00049 #endif
00050 
00051 #ifndef __sys_stdtypes_h
00052 /* This avoids lossage on SunOS but only if stdtypes.h comes first.
00053    There's no way to win with the other order!  Sun lossage.  */
00054 
00055 /* On 4.3bsd-net2, make sure ansi.h is included, so we have
00056    one less case to deal with in the following.  */
00057 #if defined (__BSD_NET2__) || defined (____386BSD____) || (defined (__FreeBSD__) && (__FreeBSD__ < 5)) || defined(__NetBSD__)
00058 #include <machine/ansi.h>
00059 #endif
00060 /* On FreeBSD 5, machine/ansi.h does not exist anymore... */
00061 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
00062 #include <sys/_types.h>
00063 #endif
00064 
00065 /* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
00066    defined if the corresponding type is *not* defined.
00067    FreeBSD-2.1 defines _MACHINE_ANSI_H_ instead of _ANSI_H_ */
00068 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)
00069 #if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_)
00070 #define _SIZE_T
00071 #endif
00072 #if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_)
00073 #define _PTRDIFF_T
00074 #endif
00075 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
00076    instead of _WCHAR_T_. */
00077 #if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_)
00078 #ifndef _BSD_WCHAR_T_
00079 #define _WCHAR_T
00080 #endif
00081 #endif
00082 /* Undef _FOO_T_ if we are supposed to define foo_t.  */
00083 #if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)
00084 #undef _PTRDIFF_T_
00085 #undef _BSD_PTRDIFF_T_
00086 #endif
00087 #if defined (__need_size_t) || defined (_STDDEF_H_)
00088 #undef _SIZE_T_
00089 #undef _BSD_SIZE_T_
00090 #endif
00091 #if defined (__need_wchar_t) || defined (_STDDEF_H_)
00092 #undef _WCHAR_T_
00093 #undef _BSD_WCHAR_T_
00094 #endif
00095 #endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) */
00096 
00097 /* Sequent's header files use _PTRDIFF_T_ in some conflicting way.
00098    Just ignore it.  */
00099 #if defined (__sequent__) && defined (_PTRDIFF_T_)
00100 #undef _PTRDIFF_T_
00101 #endif
00102 
00103 /* On VxWorks, <type/vxTypesBase.h> may have defined macros like
00104    _TYPE_size_t which will typedef size_t.  fixincludes patched the
00105    vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
00106    not defined, and so that defining this macro defines _GCC_SIZE_T.
00107    If we find that the macros are still defined at this point, we must
00108    invoke them so that the type is defined as expected.  */
00109 #if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_))
00110 _TYPE_ptrdiff_t;
00111 #undef _TYPE_ptrdiff_t
00112 #endif
00113 #if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_))
00114 _TYPE_size_t;
00115 #undef _TYPE_size_t
00116 #endif
00117 #if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_))
00118 _TYPE_wchar_t;
00119 #undef _TYPE_wchar_t
00120 #endif
00121 
00122 /* In case nobody has defined these types, but we aren't running under
00123    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and
00124    __WCHAR_TYPE__ have reasonable values.  This can happen if the
00125    parts of GCC is compiled by an older compiler, that actually
00126    include gstddef.h, such as collect2.  */
00127 
00128 /* Signed type of difference of two pointers.  */
00129 
00130 /* Define this type if we are doing the whole job,
00131    or if we want this type in particular.  */
00132 #if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
00133 #ifndef _PTRDIFF_T  /* in case <sys/types.h> has defined it. */
00134 #ifndef _T_PTRDIFF_
00135 #ifndef _T_PTRDIFF
00136 #ifndef __PTRDIFF_T
00137 #ifndef _PTRDIFF_T_
00138 #ifndef _BSD_PTRDIFF_T_
00139 #ifndef ___int_ptrdiff_t_h
00140 #ifndef _GCC_PTRDIFF_T
00141 #define _PTRDIFF_T
00142 #define _T_PTRDIFF_
00143 #define _T_PTRDIFF
00144 #define __PTRDIFF_T
00145 #define _PTRDIFF_T_
00146 #define _BSD_PTRDIFF_T_
00147 #define ___int_ptrdiff_t_h
00148 #define _GCC_PTRDIFF_T
00149 #ifndef __PTRDIFF_TYPE__
00150 #define __PTRDIFF_TYPE__ long int
00151 #endif
00152 typedef __PTRDIFF_TYPE__ ptrdiff_t;
00153 #endif /* _GCC_PTRDIFF_T */
00154 #endif /* ___int_ptrdiff_t_h */
00155 #endif /* _BSD_PTRDIFF_T_ */
00156 #endif /* _PTRDIFF_T_ */
00157 #endif /* __PTRDIFF_T */
00158 #endif /* _T_PTRDIFF */
00159 #endif /* _T_PTRDIFF_ */
00160 #endif /* _PTRDIFF_T */
00161 
00162 /* If this symbol has done its job, get rid of it.  */
00163 #undef  __need_ptrdiff_t
00164 
00165 #endif /* _STDDEF_H or __need_ptrdiff_t.  */
00166 
00167 /* Unsigned type of `sizeof' something.  */
00168 
00169 /* Define this type if we are doing the whole job,
00170    or if we want this type in particular.  */
00171 #if defined (_STDDEF_H) || defined (__need_size_t)
00172 #ifndef __size_t__  /* BeOS */
00173 #ifndef __SIZE_T__  /* Cray Unicos/Mk */
00174 #ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
00175 #ifndef _SYS_SIZE_T_H
00176 #ifndef _T_SIZE_
00177 #ifndef _T_SIZE
00178 #ifndef __SIZE_T
00179 #ifndef _SIZE_T_
00180 #ifndef _BSD_SIZE_T_
00181 #ifndef _SIZE_T_DEFINED_
00182 #ifndef _SIZE_T_DEFINED
00183 #ifndef _BSD_SIZE_T_DEFINED_  /* Darwin */
00184 #ifndef _SIZE_T_DECLARED  /* FreeBSD 5 */
00185 #ifndef ___int_size_t_h
00186 #ifndef _GCC_SIZE_T
00187 #ifndef _SIZET_
00188 #ifndef __size_t
00189 #define __size_t__  /* BeOS */
00190 #define __SIZE_T__  /* Cray Unicos/Mk */
00191 #define _SIZE_T
00192 #define _SYS_SIZE_T_H
00193 #define _T_SIZE_
00194 #define _T_SIZE
00195 #define __SIZE_T
00196 #define _SIZE_T_
00197 #define _BSD_SIZE_T_
00198 #define _SIZE_T_DEFINED_
00199 #define _SIZE_T_DEFINED
00200 #define _BSD_SIZE_T_DEFINED_  /* Darwin */
00201 #define _SIZE_T_DECLARED  /* FreeBSD 5 */
00202 #define ___int_size_t_h
00203 #define _GCC_SIZE_T
00204 #define _SIZET_
00205 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
00206 /* __size_t is a typedef on FreeBSD 5!, must not trash it. */
00207 #else
00208 #define __size_t
00209 #endif
00210 #ifndef __SIZE_TYPE__
00211 #define __SIZE_TYPE__ long unsigned int
00212 #endif
00213 #if !(defined (__GNUG__) && defined (size_t))
00214 typedef __SIZE_TYPE__ size_t;
00215 #ifdef __BEOS__
00216 typedef long ssize_t;
00217 #endif /* __BEOS__ */
00218 #endif /* !(defined (__GNUG__) && defined (size_t)) */
00219 #endif /* __size_t */
00220 #endif /* _SIZET_ */
00221 #endif /* _GCC_SIZE_T */
00222 #endif /* ___int_size_t_h */
00223 #endif /* _SIZE_T_DECLARED */
00224 #endif /* _BSD_SIZE_T_DEFINED_ */
00225 #endif /* _SIZE_T_DEFINED */
00226 #endif /* _SIZE_T_DEFINED_ */
00227 #endif /* _BSD_SIZE_T_ */
00228 #endif /* _SIZE_T_ */
00229 #endif /* __SIZE_T */
00230 #endif /* _T_SIZE */
00231 #endif /* _T_SIZE_ */
00232 #endif /* _SYS_SIZE_T_H */
00233 #endif /* _SIZE_T */
00234 #endif /* __SIZE_T__ */
00235 #endif /* __size_t__ */
00236 #undef  __need_size_t
00237 #endif /* _STDDEF_H or __need_size_t.  */
00238 
00239 
00240 /* Wide character type.
00241    Locale-writers should change this as necessary to
00242    be big enough to hold unique values not between 0 and 127,
00243    and not (wchar_t) -1, for each defined multibyte character.  */
00244 
00245 /* Define this type if we are doing the whole job,
00246    or if we want this type in particular.  */
00247 #if defined (_STDDEF_H) || defined (__need_wchar_t)
00248 #ifndef __wchar_t__ /* BeOS */
00249 #ifndef __WCHAR_T__ /* Cray Unicos/Mk */
00250 #ifndef _WCHAR_T
00251 #ifndef _T_WCHAR_
00252 #ifndef _T_WCHAR
00253 #ifndef __WCHAR_T
00254 #ifndef _WCHAR_T_
00255 #ifndef _BSD_WCHAR_T_
00256 #ifndef _BSD_WCHAR_T_DEFINED_    /* Darwin */
00257 #ifndef _BSD_RUNE_T_DEFINED_  /* Darwin */
00258 #ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */
00259 #ifndef _WCHAR_T_DEFINED_
00260 #ifndef _WCHAR_T_DEFINED
00261 #ifndef _WCHAR_T_H
00262 #ifndef ___int_wchar_t_h
00263 #ifndef __INT_WCHAR_T_H
00264 #ifndef _GCC_WCHAR_T
00265 #define __wchar_t__ /* BeOS */
00266 #define __WCHAR_T__ /* Cray Unicos/Mk */
00267 #define _WCHAR_T
00268 #define _T_WCHAR_
00269 #define _T_WCHAR
00270 #define __WCHAR_T
00271 #define _WCHAR_T_
00272 #define _BSD_WCHAR_T_
00273 #define _WCHAR_T_DEFINED_
00274 #define _WCHAR_T_DEFINED
00275 #define _WCHAR_T_H
00276 #define ___int_wchar_t_h
00277 #define __INT_WCHAR_T_H
00278 #define _GCC_WCHAR_T
00279 #define _WCHAR_T_DECLARED
00280 
00281 /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
00282    instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other
00283    symbols in the _FOO_T_ family, stays defined even after its
00284    corresponding type is defined).  If we define wchar_t, then we
00285    must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if
00286    we undef _WCHAR_T_, then we must also define rune_t, since 
00287    headers like runetype.h assume that if machine/ansi.h is included,
00288    and _BSD_WCHAR_T_ is not defined, then rune_t is available.
00289    machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of
00290    the same type." */
00291 #ifdef _BSD_WCHAR_T_
00292 #undef _BSD_WCHAR_T_
00293 #ifdef _BSD_RUNE_T_
00294 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)
00295 typedef _BSD_RUNE_T_ rune_t;
00296 #define _BSD_WCHAR_T_DEFINED_
00297 #define _BSD_RUNE_T_DEFINED_  /* Darwin */
00298 #if defined (__FreeBSD__) && (__FreeBSD__ < 5)
00299 /* Why is this file so hard to maintain properly?  In contrast to
00300    the comment above regarding BSD/386 1.1, on FreeBSD for as long
00301    as the symbol has existed, _BSD_RUNE_T_ must not stay defined or
00302    redundant typedefs will occur when stdlib.h is included after this file. */
00303 #undef _BSD_RUNE_T_
00304 #endif
00305 #endif
00306 #endif
00307 #endif
00308 /* FreeBSD 5 can't be handled well using "traditional" logic above
00309    since it no longer defines _BSD_RUNE_T_ yet still desires to export
00310    rune_t in some cases... */
00311 #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
00312 #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)
00313 #if __BSD_VISIBLE
00314 #ifndef _RUNE_T_DECLARED
00315 typedef __rune_t        rune_t;
00316 #define _RUNE_T_DECLARED
00317 #endif
00318 #endif
00319 #endif
00320 #endif
00321 
00322 #ifndef __WCHAR_TYPE__
00323 #define __WCHAR_TYPE__ int
00324 #endif
00325 #ifndef __cplusplus
00326 typedef __WCHAR_TYPE__ wchar_t;
00327 #endif
00328 #endif
00329 #endif
00330 #endif
00331 #endif
00332 #endif
00333 #endif
00334 #endif /* _WCHAR_T_DECLARED */
00335 #endif /* _BSD_RUNE_T_DEFINED_ */
00336 #endif
00337 #endif
00338 #endif
00339 #endif
00340 #endif
00341 #endif
00342 #endif
00343 #endif /* __WCHAR_T__ */
00344 #endif /* __wchar_t__ */
00345 #undef  __need_wchar_t
00346 #endif /* _STDDEF_H or __need_wchar_t.  */
00347 
00348 #if defined (__need_wint_t)
00349 #ifndef _WINT_T
00350 #define _WINT_T
00351 
00352 #ifndef __WINT_TYPE__
00353 #define __WINT_TYPE__ unsigned int
00354 #endif
00355 typedef __WINT_TYPE__ wint_t;
00356 #endif
00357 #undef __need_wint_t
00358 #endif
00359 
00360 /*  In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
00361     are already defined.  */
00362 /*  BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here.  */
00363 #if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)
00364 /*  The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_
00365     are probably typos and should be removed before 2.8 is released.  */
00366 #ifdef _GCC_PTRDIFF_T_
00367 #undef _PTRDIFF_T_
00368 #undef _BSD_PTRDIFF_T_
00369 #endif
00370 #ifdef _GCC_SIZE_T_
00371 #undef _SIZE_T_
00372 #undef _BSD_SIZE_T_
00373 #endif
00374 #ifdef _GCC_WCHAR_T_
00375 #undef _WCHAR_T_
00376 #undef _BSD_WCHAR_T_
00377 #endif
00378 /*  The following ones are the real ones.  */
00379 #ifdef _GCC_PTRDIFF_T
00380 #undef _PTRDIFF_T_
00381 #undef _BSD_PTRDIFF_T_
00382 #endif
00383 #ifdef _GCC_SIZE_T
00384 #undef _SIZE_T_
00385 #undef _BSD_SIZE_T_
00386 #endif
00387 #ifdef _GCC_WCHAR_T
00388 #undef _WCHAR_T_
00389 #undef _BSD_WCHAR_T_
00390 #endif
00391 #endif /* _ANSI_H_ || _MACHINE_ANSI_H_ */
00392 
00393 #endif /* __sys_stdtypes_h */
00394 
00395 /* A null pointer constant.  */
00396 
00397 #if defined (_STDDEF_H) || defined (__need_NULL)
00398 #undef NULL   /* in case <stdio.h> has defined it. */
00399 #ifdef __GNUG__
00400 #define NULL __null
00401 #else   /* G++ */
00402 #ifndef __cplusplus
00403 #define NULL ((void *)0)
00404 #else   /* C++ */
00405 #define NULL 0
00406 #endif  /* C++ */
00407 #endif  /* G++ */
00408 #endif  /* NULL not defined and <stddef.h> or need NULL.  */
00409 #undef  __need_NULL
00410 
00411 #ifdef _STDDEF_H
00412 
00413 /* Offset of member MEMBER in a struct of type TYPE. */
00414 #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
00415 
00416 #endif /* _STDDEF_H was defined this time */
00417 
00418 #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__
00419     || __need_XXX was not defined before */