include/stddef.h

   1 #ifndef _STDDEF_H
   2 #define _STDDEF_H
   3
   4 typedef __SIZE_TYPE__ size_t;
   5 typedef __WCHAR_TYPE__ wchar_t;
   6 typedef __PTRDIFF_TYPE__ ptrdiff_t;
   7
   8 #ifdef __ILP32__
   9 typedef int ssize_t;
  10 typedef int intptr_t;
  11 typedef unsigned int uintptr_t;
  12 #else
  13 typedef __PTRDIFF_TYPE__ ssize_t;
  14 typedef __PTRDIFF_TYPE__ intptr_t;
  15 typedef __SIZE_TYPE__ uintptr_t;
  16 #endif
  17
  18 #ifndef __int8_t_defined
  19 #define __int8_t_defined
  20 typedef signed char int8_t;
  21 typedef signed short int int16_t;
  22 typedef signed int int32_t;
  23 #ifdef __LP64__
  24 typedef signed long int int64_t;
  25 #else
  26 typedef signed long long int int64_t;
  27 #endif
  28 typedef unsigned char uint8_t;
  29 typedef unsigned short int uint16_t;
  30 typedef unsigned int uint32_t;
  31 #ifdef __LP64__
  32 typedef unsigned long int uint64_t;
  33 #else
  34 typedef unsigned long long int uint64_t;
  35 #endif
  36 #endif
  37
  38 #ifndef NULL
  39 #define NULL ((void*)0)
  40 #endif
  41
  42 #define offsetof(type, field) ((size_t)&((type *)0)->field)
  43
  44 void *alloca(size_t size);
  45
  46 #endif
  47
  48 /* Older glibc require a wint_t from <stddef.h> (when requested
  49    by __need_wint_t, as otherwise stddef.h isn't allowed to
  50    define this type).   Note that this must be outside the normal
  51    _STDDEF_H guard, so that it works even when we've included the file
  52    already (without requiring wint_t).  Some other libs define _WINT_T
  53    if they've already provided that type, so we can use that as guard.
  54    TCC defines __WINT_TYPE__ for us.  */
  55 #if defined (__need_wint_t)
  56 #ifndef _WINT_T
  57 #define _WINT_T
  58 typedef __WINT_TYPE__ wint_t;
  59 #endif
  60 #undef __need_wint_t
  61 #endif