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From-SVN: r631
This commit is contained in:
Richard Stallman 1992-03-30 02:25:19 +00:00
parent 25f75d8a31
commit 77395be632
1 changed files with 37 additions and 3 deletions
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40
gcc/ginclude/stddef.h
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@ -1,7 +1,14 @@
#ifndef _STDDEF_H
#ifndef _STDDEF_H_
/* 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))
#define _STDDEF_H
#define _STDDEF_H_
#endif
#ifndef __sys_stdtypes_h
/* This avoids lossage on Sunos but only if stdtypes.h comes first.
@ -32,7 +39,11 @@
#ifndef __PTRDIFF_TYPE__
#define __PTRDIFF_TYPE__ long int
#endif
/* 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)
typedef __PTRDIFF_TYPE__ ptrdiff_t;
#endif /* <stddef.h> or __need_ptrdiff_t. */
#endif /* _GCC_PTRDIFF_T */
#endif /* ___int_ptrdiff_t_h */
#endif /* _PTRDIFF_T_ */
@ -41,6 +52,9 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
#endif /* _T_PTRDIFF_ */
#endif /* _PTRDIFF_T */
/* If this symbol has done its job, get rid of it. */
#undef __need_ptrdiff_t
/* Unsigned type of `sizeof' something. */
#ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
@ -62,7 +76,11 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
#ifndef __SIZE_TYPE__
#define __SIZE_TYPE__ long unsigned int
#endif
/* 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)
typedef __SIZE_TYPE__ size_t;
#endif /* <stddef.h> or __need_size_t. */
#endif /* _SIZET_ */
#endif /* _GCC_SIZE_T */
#endif /* ___int_size_t_h */
@ -71,8 +89,13 @@ typedef __SIZE_TYPE__ size_t;
#endif /* _T_SIZE */
#endif /* _T_SIZE_ */
#endif /* _SIZE_T */
#undef __need_size_t
/* Data type for wide chars. */
/* 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. */
#ifndef _WCHAR_T
#ifndef _T_WCHAR_
@ -91,7 +114,11 @@ typedef __SIZE_TYPE__ size_t;
#ifndef __WCHAR_TYPE__
#define __WCHAR_TYPE__ int
#endif
/* 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)
typedef __WCHAR_TYPE__ wchar_t;
#endif /* <stddef.h> or __need_wchar_t. */
#endif
#endif
#endif
@ -99,17 +126,24 @@ typedef __WCHAR_TYPE__ wchar_t;
#endif
#endif
#endif
#undef __need_wchat_t
#endif /* __sys_stdtypes_h */
/* A null pointer constant. */
#if defined (_STDDEF_H) || defined (__need_NULL)
#undef NULL /* in case <stdio.h> has defined it. */
#define NULL ((void *)0)
#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) ((size_t) &((TYPE *)0)->MEMBER)
#endif /* _STDDEF_H_ */
#endif /* _STDDEF_H */
#endif /* _STDDEF_H was defined this time */
#endif /* _STDDEF_H_ was not defined before */
#endif /* _STDDEF_H was not defined before */