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