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 #if __STDC_VERSION__ >= 201112L
  12 typedef union { long long __ll; long double __ld; } max_align_t;
  13 #endif
  14
  15 #ifndef __int8_t_defined
  16 #define __int8_t_defined
  17 typedef signed char int8_t;
  18 typedef signed short int int16_t;
  19 typedef signed int int32_t;
  20 #ifdef __LP64__
  21 typedef signed long int int64_t;
  22 #else
  23 typedef signed long long int int64_t;
  24 #endif
  25 typedef unsigned char uint8_t;
  26 typedef unsigned short int uint16_t;
  27 typedef unsigned int uint32_t;
  28 #ifdef __LP64__
  29 typedef unsigned long int uint64_t;
  30 #else
  31 typedef unsigned long long int uint64_t;
  32 #endif
  33 #endif
  34
  35 #ifndef NULL
  36 #define NULL ((void*)0)
  37 #endif
  38
  39 #define offsetof(type, field) ((size_t)&((type *)0)->field)
  40
  41 void *alloca(size_t size);
  42
  43 #endif
  44
  45 /* Older glibc require a wint_t from <stddef.h> (when requested
  46    by __need_wint_t, as otherwise stddef.h isn't allowed to
  47    define this type).   Note that this must be outside the normal
  48    _STDDEF_H guard, so that it works even when we've included the file
  49    already (without requiring wint_t).  Some other libs define _WINT_T
  50    if they've already provided that type, so we can use that as guard.
  51    TCC defines __WINT_TYPE__ for us.  */
  52 #if defined (__need_wint_t)
  53 #ifndef _WINT_T
  54 #define _WINT_T
  55 typedef __WINT_TYPE__ wint_t;
  56 #endif
  57 #undef __need_wint_t
  58 #endif