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/* Copyright (C) 1989, 1997, 1998, 1999, 2000, 2002, 2004, 2009

   Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3, or (at your option)

any later version.

GCC is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

Under Section 7 of GPL version 3, you are granted additional

permissions described in the GCC Runtime Library Exception, version

3.1, as published by the Free Software Foundation.

You should have received a copy of the GNU General Public License and

a copy of the GCC Runtime Library Exception along with this program;

see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see

<http://www.gnu.org/licenses/>.  */

/*

 * ISO C Standard:  7.17  Common definitions  <stddef.h>

 */

#if (!defined(_STDDEF_H) && !defined(_STDDEF_H_) && !defined(_ANSI_STDDEF_H) \

     && !defined(__STDDEF_H__)) \

    || defined(__need_wchar_t) || defined(__need_size_t) \

    || defined(__need_ptrdiff_t) || defined(__need_NULL) \

    || defined(__need_wint_t)

/* Any one of these symbols __need_* means that GNU libc

   wants us just to define one data type.  So don't define

   the symbols that indicate this file's entire job has been done.  */

#if (!defined(__need_wchar_t) && !defined(__need_size_t)        \

     && !defined(__need_ptrdiff_t) && !defined(__need_NULL)     \

     && !defined(__need_wint_t))

#define _STDDEF_H

#define _STDDEF_H_

/* snaroff@next.com says the NeXT needs this.  */

#define _ANSI_STDDEF_H

/* Irix 5.1 needs this.  */

#define __STDDEF_H__

#endif

#ifndef __sys_stdtypes_h

/* This avoids lossage on SunOS but only if stdtypes.h comes first.

   There's no way to win with the other order!  Sun lossage.  */

/* On 4.3bsd-net2, make sure ansi.h is included, so we have

   one less case to deal with in the following.  */

#if defined (__BSD_NET2__) || defined (____386BSD____) || (defined (__FreeBSD__) && (__FreeBSD__ < 5)) || defined(__NetBSD__)

#include <machine/ansi.h>

#endif

/* On FreeBSD 5, machine/ansi.h does not exist anymore... */

#if defined (__FreeBSD__) && (__FreeBSD__ >= 5)

#include <sys/_types.h>

#endif

/* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are

   defined if the corresponding type is *not* defined.

   FreeBSD-2.1 defines _MACHINE_ANSI_H_ instead of _ANSI_H_ */

#if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)

#if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_)

#define _SIZE_T

#endif

#if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_)

#define _PTRDIFF_T

#endif

/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_

   instead of _WCHAR_T_. */

#if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_)

#ifndef _BSD_WCHAR_T_

#define _WCHAR_T

#endif

#endif

/* Undef _FOO_T_ if we are supposed to define foo_t.  */

#if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)

#undef _PTRDIFF_T_

#undef _BSD_PTRDIFF_T_

#endif

#if defined (__need_size_t) || defined (_STDDEF_H_)

#undef _SIZE_T_

#undef _BSD_SIZE_T_

#endif

#if defined (__need_wchar_t) || defined (_STDDEF_H_)

#undef _WCHAR_T_

#undef _BSD_WCHAR_T_

#endif

#endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) */

/* Sequent's header files use _PTRDIFF_T_ in some conflicting way.

   Just ignore it.  */

#if defined (__sequent__) && defined (_PTRDIFF_T_)

#undef _PTRDIFF_T_

#endif

/* On VxWorks, <type/vxTypesBase.h> may have defined macros like

   _TYPE_size_t which will typedef size_t.  fixincludes patched the

   vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is

   not defined, and so that defining this macro defines _GCC_SIZE_T.

   If we find that the macros are still defined at this point, we must

   invoke them so that the type is defined as expected.  */

#if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_))

_TYPE_ptrdiff_t;

#undef _TYPE_ptrdiff_t

#endif

#if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_))

_TYPE_size_t;

#undef _TYPE_size_t

#endif

#if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_))

_TYPE_wchar_t;

#undef _TYPE_wchar_t

#endif

/* In case nobody has defined these types, but we aren't running under

   GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE_TYPE__, and

   __WCHAR_TYPE__ have reasonable values.  This can happen if the

   parts of GCC is compiled by an older compiler, that actually

   include gstddef.h, such as collect2.  */

/* Signed type of difference of two pointers.  */

/* Define this type if we are doing the whole job,

   or if we want this type in particular.  */

#if defined (_STDDEF_H) || defined (__need_ptrdiff_t)

#ifndef _PTRDIFF_T      /* in case <sys/types.h> has defined it. */

#ifndef _T_PTRDIFF_

#ifndef _T_PTRDIFF

#ifndef __PTRDIFF_T

#ifndef _PTRDIFF_T_

#ifndef _BSD_PTRDIFF_T_

#ifndef ___int_ptrdiff_t_h

#ifndef _GCC_PTRDIFF_T

#define _PTRDIFF_T

#define _T_PTRDIFF_

#define _T_PTRDIFF

#define __PTRDIFF_T

#define _PTRDIFF_T_

#define _BSD_PTRDIFF_T_

#define ___int_ptrdiff_t_h

#define _GCC_PTRDIFF_T

#ifndef __PTRDIFF_TYPE__

#define __PTRDIFF_TYPE__ long int

#endif

typedef __PTRDIFF_TYPE__ ptrdiff_t;

#endif /* _GCC_PTRDIFF_T */

#endif /* ___int_ptrdiff_t_h */

#endif /* _BSD_PTRDIFF_T_ */

#endif /* _PTRDIFF_T_ */

#endif /* __PTRDIFF_T */

#endif /* _T_PTRDIFF */

#endif /* _T_PTRDIFF_ */

#endif /* _PTRDIFF_T */

/* If this symbol has done its job, get rid of it.  */

#undef  __need_ptrdiff_t

#endif /* _STDDEF_H or __need_ptrdiff_t.  */

/* Unsigned type of `sizeof' something.  */

/* Define this type if we are doing the whole job,

   or if we want this type in particular.  */

#if defined (_STDDEF_H) || defined (__need_size_t)

#ifndef __size_t__      /* BeOS */

#ifndef __SIZE_T__      /* Cray Unicos/Mk */

#ifndef _SIZE_T /* in case <sys/types.h> has defined it. */

#ifndef _SYS_SIZE_T_H

#ifndef _T_SIZE_

#ifndef _T_SIZE

#ifndef __SIZE_T

#ifndef _SIZE_T_

#ifndef _BSD_SIZE_T_

#ifndef _SIZE_T_DEFINED_

#ifndef _SIZE_T_DEFINED

#ifndef _BSD_SIZE_T_DEFINED_    /* Darwin */

#ifndef _SIZE_T_DECLARED        /* FreeBSD 5 */

#ifndef ___int_size_t_h

#ifndef _GCC_SIZE_T

#ifndef _SIZET_

#ifndef __size_t

#define __size_t__      /* BeOS */

#define __SIZE_T__      /* Cray Unicos/Mk */

#define _SIZE_T

#define _SYS_SIZE_T_H

#define _T_SIZE_

#define _T_SIZE

#define __SIZE_T

#define _SIZE_T_

#define _BSD_SIZE_T_

#define _SIZE_T_DEFINED_

#define _SIZE_T_DEFINED

#define _BSD_SIZE_T_DEFINED_    /* Darwin */

#define _SIZE_T_DECLARED        /* FreeBSD 5 */

#define ___int_size_t_h

#define _GCC_SIZE_T

#define _SIZET_

#if defined (__FreeBSD__) && (__FreeBSD__ >= 5)

/* __size_t is a typedef on FreeBSD 5!, must not trash it. */

#else

#define __size_t

#endif

#ifndef __SIZE_TYPE__

#define __SIZE_TYPE__ long unsigned int

#endif

#if !(defined (__GNUG__) && defined (size_t))

typedef __SIZE_TYPE__ size_t;

#ifdef __BEOS__

typedef long ssize_t;

#endif /* __BEOS__ */

#endif /* !(defined (__GNUG__) && defined (size_t)) */

#endif /* __size_t */

#endif /* _SIZET_ */

#endif /* _GCC_SIZE_T */

#endif /* ___int_size_t_h */

#endif /* _SIZE_T_DECLARED */

#endif /* _BSD_SIZE_T_DEFINED_ */

#endif /* _SIZE_T_DEFINED */

#endif /* _SIZE_T_DEFINED_ */

#endif /* _BSD_SIZE_T_ */

#endif /* _SIZE_T_ */

#endif /* __SIZE_T */

#endif /* _T_SIZE */

#endif /* _T_SIZE_ */

#endif /* _SYS_SIZE_T_H */

#endif /* _SIZE_T */

#endif /* __SIZE_T__ */

#endif /* __size_t__ */

#undef  __need_size_t

#endif /* _STDDEF_H or __need_size_t.  */

/* Wide character type.

   Locale-writers should change this as necessary to

   be big enough to hold unique values not between 0 and 127,

   and not (wchar_t) -1, for each defined multibyte character.  */

/* Define this type if we are doing the whole job,

   or if we want this type in particular.  */

#if defined (_STDDEF_H) || defined (__need_wchar_t)

#ifndef __wchar_t__     /* BeOS */

#ifndef __WCHAR_T__     /* Cray Unicos/Mk */

#ifndef _WCHAR_T

#ifndef _T_WCHAR_

#ifndef _T_WCHAR

#ifndef __WCHAR_T

#ifndef _WCHAR_T_

#ifndef _BSD_WCHAR_T_

#ifndef _BSD_WCHAR_T_DEFINED_    /* Darwin */

#ifndef _BSD_RUNE_T_DEFINED_    /* Darwin */

#ifndef _WCHAR_T_DECLARED /* FreeBSD 5 */

#ifndef _WCHAR_T_DEFINED_

#ifndef _WCHAR_T_DEFINED

#ifndef _WCHAR_T_H

#ifndef ___int_wchar_t_h

#ifndef __INT_WCHAR_T_H

#ifndef _GCC_WCHAR_T

#define __wchar_t__     /* BeOS */

#define __WCHAR_T__     /* Cray Unicos/Mk */

#define _WCHAR_T

#define _T_WCHAR_

#define _T_WCHAR

#define __WCHAR_T

#define _WCHAR_T_

#define _BSD_WCHAR_T_

#define _WCHAR_T_DEFINED_

#define _WCHAR_T_DEFINED

#define _WCHAR_T_H

#define ___int_wchar_t_h

#define __INT_WCHAR_T_H

#define _GCC_WCHAR_T

#define _WCHAR_T_DECLARED

/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_

   instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other

   symbols in the _FOO_T_ family, stays defined even after its

   corresponding type is defined).  If we define wchar_t, then we

   must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if

   we undef _WCHAR_T_, then we must also define rune_t, since

   headers like runetype.h assume that if machine/ansi.h is included,

   and _BSD_WCHAR_T_ is not defined, then rune_t is available.

   machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of

   the same type." */

#ifdef _BSD_WCHAR_T_

#undef _BSD_WCHAR_T_

#ifdef _BSD_RUNE_T_

#if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)

typedef _BSD_RUNE_T_ rune_t;

#define _BSD_WCHAR_T_DEFINED_

#define _BSD_RUNE_T_DEFINED_    /* Darwin */

#if defined (__FreeBSD__) && (__FreeBSD__ < 5)

/* Why is this file so hard to maintain properly?  In contrast to

   the comment above regarding BSD/386 1.1, on FreeBSD for as long

   as the symbol has existed, _BSD_RUNE_T_ must not stay defined or

   redundant typedefs will occur when stdlib.h is included after this file. */

#undef _BSD_RUNE_T_

#endif

#endif

#endif

#endif

/* FreeBSD 5 can't be handled well using "traditional" logic above

   since it no longer defines _BSD_RUNE_T_ yet still desires to export

   rune_t in some cases... */

#if defined (__FreeBSD__) && (__FreeBSD__ >= 5)

#if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)

#if __BSD_VISIBLE

#ifndef _RUNE_T_DECLARED

typedef __rune_t        rune_t;

#define _RUNE_T_DECLARED

#endif

#endif

#endif

#endif

#ifndef __WCHAR_TYPE__

#define __WCHAR_TYPE__ int

#endif

#ifndef __cplusplus

typedef __WCHAR_TYPE__ wchar_t;

#endif

#endif

#endif

#endif

#endif

#endif

#endif

#endif /* _WCHAR_T_DECLARED */

#endif /* _BSD_RUNE_T_DEFINED_ */

#endif

#endif

#endif

#endif

#endif

#endif

#endif

#endif /* __WCHAR_T__ */

#endif /* __wchar_t__ */

#undef  __need_wchar_t

#endif /* _STDDEF_H or __need_wchar_t.  */

#if defined (__need_wint_t)

#ifndef _WINT_T

#define _WINT_T

#ifndef __WINT_TYPE__

#define __WINT_TYPE__ unsigned int

#endif

typedef __WINT_TYPE__ wint_t;

#endif

#undef __need_wint_t

#endif

/*  In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.

    are already defined.  */

/*  BSD/OS 3.1 and FreeBSD [23].x require the MACHINE_ANSI_H check here.  */

#if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)

/*  The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_

    are probably typos and should be removed before 2.8 is released.  */

#ifdef _GCC_PTRDIFF_T_

#undef _PTRDIFF_T_

#undef _BSD_PTRDIFF_T_

#endif

#ifdef _GCC_SIZE_T_

#undef _SIZE_T_

#undef _BSD_SIZE_T_

#endif

#ifdef _GCC_WCHAR_T_

#undef _WCHAR_T_

#undef _BSD_WCHAR_T_

#endif

/*  The following ones are the real ones.  */

#ifdef _GCC_PTRDIFF_T

#undef _PTRDIFF_T_

#undef _BSD_PTRDIFF_T_

#endif

#ifdef _GCC_SIZE_T

#undef _SIZE_T_

#undef _BSD_SIZE_T_

#endif

#ifdef _GCC_WCHAR_T

#undef _WCHAR_T_

#undef _BSD_WCHAR_T_

#endif

#endif /* _ANSI_H_ || _MACHINE_ANSI_H_ */

#endif /* __sys_stdtypes_h */

/* A null pointer constant.  */

#if defined (_STDDEF_H) || defined (__need_NULL)

#undef NULL             /* in case <stdio.h> has defined it. */

#ifdef __GNUG__

#define NULL __null

#else   /* G++ */

#ifndef __cplusplus

#define NULL ((void *)0)

#else   /* C++ */

#define NULL 0

#endif  /* C++ */

#endif  /* G++ */

#endif  /* NULL not defined and <stddef.h> or need NULL.  */

#undef  __need_NULL

#ifdef _STDDEF_H

/* Offset of member MEMBER in a struct of type TYPE. */

#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)

#endif /* _STDDEF_H was defined this time */

#endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__

          || __need_XXX was not defined before */