#ifndef _STDDEF_H #ifndef _STDDEF_H_ #ifndef _ANSI_STDDEF_H #ifndef __STDDEF_H__ #ifdef amigados /* GNU libc has special support in this file, 4.3bsd-net2 libc deserves that just as well. The system headers are ANSI compliant, the used compiler IS gcc, so it's really ok to use the system header, no reason to hassle with a jungle of ifdefs. Besides, amigados is only defined if compiling with host=amigados, it doesn't apply if compiling with target=amigados on a different host with possibly different system headers. Same thing would apply to gstdarg.h and gvarargs.h, but those headers are more easily fixable than this one and I'm sick of writing the same comment there as well. MW Include the contents of inline rather than with a #include, to avoid infinite include recursion when this file is installed in gcc's include directory as stddef.h. (fnf) */ #define _STDDEF_H_ #include typedef _PTRDIFF_T_ ptrdiff_t; #ifdef _SIZE_T_ typedef _SIZE_T_ size_t; #undef _SIZE_T_ #endif #ifdef _WCHAR_T_ typedef _WCHAR_T_ wchar_t; #undef _WCHAR_T_ #endif #ifndef NULL #define NULL 0 #endif #define offsetof(type, member) ((size_t)(&((type *)0)->member)) #else /* not amigados */ /* 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_ /* 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__) #include #endif /* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are defined if the corresponding type is *not* defined. */ #ifdef _ANSI_H_ #ifndef _SIZE_T_ #define _SIZE_T #endif #ifndef _PTRDIFF_T_ #define _PTRDIFF_T #endif #ifndef _WCHAR_T_ #define _WCHAR_T #endif /* Undef _FOO_T_ if we are supposed to define foo_t. */ #if defined (__need_ptrdiff_t) || defined (_STDDEF_H_) #undef _PTRDIFF_T_ #endif #if defined (__need_size_t) || defined (_STDDEF_H_) #undef _SIZE_T_ #endif #if defined (__need_wchar_t) || defined (_STDDEF_H_) #undef _WCHAR_T_ #endif #endif /* _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 /* 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 has defined it. */ #ifndef _T_PTRDIFF_ #ifndef _T_PTRDIFF #ifndef __PTRDIFF_T #ifndef _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 ___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 /* _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 /* in case has defined it. */ #ifndef _SYS_SIZE_T_H #ifndef _T_SIZE_ #ifndef _T_SIZE #ifndef __SIZE_T #ifndef _SIZE_T_ #ifndef ___int_size_t_h #ifndef _GCC_SIZE_T #ifndef _SIZET_ #ifndef __size_t #define _SIZE_T #define _SYS_SIZE_T_H #define _T_SIZE_ #define _T_SIZE #define __SIZE_T #define _SIZE_T_ #define ___int_size_t_h #define _GCC_SIZE_T #define _SIZET_ #define __size_t #ifndef __SIZE_TYPE__ #define __SIZE_TYPE__ long unsigned int #endif #if !(defined (__GNUG__) && defined (size_t)) typedef __SIZE_TYPE__ size_t; #endif /* !(defined (__GNUG__) && defined (size_t)) */ #endif /* __size_t */ #endif /* _SIZET_ */ #endif /* _GCC_SIZE_T */ #endif /* ___int_size_t_h */ #endif /* _SIZE_T_ */ #endif /* __SIZE_T */ #endif /* _T_SIZE */ #endif /* _T_SIZE_ */ #endif /* _SYS_SIZE_T_H */ #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 #ifndef _T_WCHAR_ #ifndef _T_WCHAR #ifndef __WCHAR_T #ifndef _WCHAR_T_ #ifndef _WCHAR_T_H #ifndef ___int_wchar_t_h #ifndef __INT_WCHAR_T_H #ifndef _GCC_WCHAR_T #define _WCHAR_T #define _T_WCHAR_ #define _T_WCHAR #define __WCHAR_T #define _WCHAR_T_ #define _WCHAR_T_H #define ___int_wchar_t_h #define __INT_WCHAR_T_H #define _GCC_WCHAR_T #ifndef __WCHAR_TYPE__ #define __WCHAR_TYPE__ int #endif #endif /* not amigados */ typedef __WCHAR_TYPE__ wchar_t; #endif #endif #endif #endif #endif #endif #endif #endif #endif #undef __need_wchar_t #endif /* _STDDEF_H or __need_wchar_t. */ /* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc. are already defined. */ #ifdef _ANSI_H_ #ifdef _GCC_PTRDIFF_T_ #undef _PTRDIFF_T_ #endif #ifdef _GCC_SIZE_T_ #undef _SIZE_T_ #endif #ifdef _GCC_WCHAR_T_ #undef _WCHAR_T_ #endif #endif /* _ANSI_H_ */ #endif /* __sys_stdtypes_h */ /* A null pointer constant. */ #if defined (_STDDEF_H) || defined (__need_NULL) #undef NULL /* in case has defined it. */ #define NULL ((void *)0) #endif /* NULL not defined and 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 was defined this time */ #endif /* __STDDEF_H__ was not defined before */ #endif /* _ANSI_STDDEF_H was not defined before */ #endif /* _STDDEF_H_ was not defined before */ #endif /* _STDDEF_H was not defined before */