include/stddef.h

   1 #ifndef _STDDEF_H
   2 #define _STDDEF_H
   3
   4 typedef __SIZE_TYPE__ size_t;
   5 typedef __PTRDIFF_TYPE__ ssize_t;
   6 typedef __WCHAR_TYPE__ wchar_t;
   7 typedef __PTRDIFF_TYPE__ ptrdiff_t;
   8 typedef __PTRDIFF_TYPE__ intptr_t;
   9 typedef __SIZE_TYPE__ uintptr_t;
  10
  11 typedef union { long long __ll; long double __ld; } max_align_t;
  12
  13 #ifndef __int8_t_defined
  14 #define __int8_t_defined
  15 typedef signed char int8_t;
  16 typedef signed short int int16_t;
  17 typedef signed int int32_t;
  18 #ifdef __LP64__
  19 typedef signed long int int64_t;
  20 #else
  21 typedef signed long long int int64_t;
  22 #endif
  23 typedef unsigned char uint8_t;
  24 typedef unsigned short int uint16_t;
  25 typedef unsigned int uint32_t;
  26 #ifdef __LP64__
  27 typedef unsigned long int uint64_t;
  28 #else
  29 typedef unsigned long long int uint64_t;
  30 #endif
  31 #endif
  32
  33 #ifndef NULL
  34 #define NULL ((void*)0)
  35 #endif
  36
  37 #define offsetof(type, field) ((size_t)&((type *)0)->field)
  38
  39 void *alloca(size_t size);
  40
  41 #endif
  42
  43 /* Older glibc require a wint_t from <stddef.h> (when requested
  44    by __need_wint_t, as otherwise stddef.h isn't allowed to
  45    define this type).   Note that this must be outside the normal
  46    _STDDEF_H guard, so that it works even when we've included the file
  47    already (without requiring wint_t).  Some other libs define _WINT_T
  48    if they've already provided that type, so we can use that as guard.
  49    TCC defines __WINT_TYPE__ for us.  */
  50 #if defined (__need_wint_t)
  51 #ifndef _WINT_T
  52 #define _WINT_T
  53 typedef __WINT_TYPE__ wint_t;
  54 #endif
  55 #undef __need_wint_t
  56 #endif