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Annotation of gcc/gstddef.h, revision 1.1.1.1

1.1       root        1: #ifndef _STDDEF_H
                      2: #ifndef _STDDEF_H_
                      3: #define _STDDEF_H
                      4: #define _STDDEF_H_
                      5: 
                      6: #ifndef __sys_stdtypes_h
                      7: /* This avoids lossage on Sunos but only if stdtypes.h comes first.
                      8:    There's no way to win with the other order!  Sun lossage.  */
                      9: 
                     10: /* In case nobody has defined these types, but we aren't running under
                     11:    GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE__TYPE__, and
                     12:    __WCHAR_TYPE__ have reasonable values.  This can happen if the
                     13:    parts of GCC is compiled by an older compiler, that actually
                     14:    include gstddef.h, such as collect2.  */
                     15: 
                     16: /* Signed type of difference of two pointers.  */
                     17: 
                     18: #ifndef _PTRDIFF_T     /* in case <sys/types.h> has defined it. */
                     19: #ifndef _T_PTRDIFF
                     20: #ifndef __PTRDIFF_T
                     21: #ifndef _PTRDIFF_T_
                     22: #ifndef ___int_ptrdiff_t_h
                     23: #define _PTRDIFF_T
                     24: #define _T_PTRDIFF
                     25: #define __PTRDIFF_T
                     26: #define _PTRDIFF_T_
                     27: #define ___int_ptrdiff_t_h
                     28: #ifndef __PTRDIFF_TYPE__
                     29: #define __PTRDIFF_TYPE__ long int
                     30: #endif
                     31: typedef __PTRDIFF_TYPE__ ptrdiff_t;
                     32: #endif /* ___int_ptrdiff_t_h */
                     33: #endif /* _PTRDIFF_T_ */
                     34: #endif /* __PTRDIFF_T */
                     35: #endif /* _T_PTRDIFF */
                     36: #endif /* _PTRDIFF_T */
                     37: 
                     38: /* Unsigned type of `sizeof' something.  */
                     39: 
                     40: #ifndef _SIZE_T        /* in case <sys/types.h> has defined it. */
                     41: #ifndef _T_SIZE
                     42: #ifndef __SIZE_T
                     43: #ifndef _SIZE_T_
                     44: #ifndef ___int_size_t_h
                     45: #define _SIZE_T
                     46: #define _T_SIZE
                     47: #define __SIZE_T
                     48: #define _SIZE_T_
                     49: #define ___int_size_t_h
                     50: #ifndef __SIZE_TYPE__
                     51: #define __SIZE_TYPE__ long unsigned int
                     52: #endif
                     53: typedef __SIZE_TYPE__ size_t;
                     54: #endif /* ___int_size_t_h */
                     55: #endif /* _SIZE_T_ */
                     56: #endif /* __SIZE_T */
                     57: #endif /* _T_SIZE */
                     58: #endif /* _SIZE_T */
                     59: 
                     60: /* Data type for wide chars.  */
                     61: 
                     62: #ifndef _WCHAR_T
                     63: #ifndef _T_WCHAR_
                     64: #ifndef _T_WCHAR
                     65: #ifndef __WCHAR_T
                     66: #ifndef _WCHAR_T_
                     67: #ifndef ___int_wchar_t_h
                     68: #define _WCHAR_T
                     69: #define _T_WCHAR_
                     70: #define _T_WCHAR
                     71: #define __WCHAR_T
                     72: #define _WCHAR_T_
                     73: #define ___int_wchar_t_h
                     74: #ifndef __WCHAR_TYPE__
                     75: #define __WCHAR_TYPE__ int
                     76: #endif
                     77: typedef __WCHAR_TYPE__ wchar_t;
                     78: #endif
                     79: #endif
                     80: #endif
                     81: #endif
                     82: #endif
                     83: #endif
                     84: 
                     85: #endif /* __sys_stdtypes_h */
                     86: 
                     87: /* A null pointer constant.  */
                     88: 
                     89: #undef NULL            /* in case <stdio.h> has defined it. */
                     90: #define NULL ((void *)0)
                     91: 
                     92: /* Offset of member MEMBER in a struct of type TYPE.  */
                     93: 
                     94: #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
                     95: 
                     96: #endif /* _STDDEF_H_ */
                     97: #endif /* _STDDEF_H */

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