stddef.h 1.1 KB

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  1. #ifndef _STDDEF_H
  2. #define _STDDEF_H
  3. typedef __SIZE_TYPE__ size_t;
  4. typedef __PTRDIFF_TYPE__ ssize_t;
  5. typedef __WCHAR_TYPE__ wchar_t;
  6. typedef __PTRDIFF_TYPE__ ptrdiff_t;
  7. typedef __PTRDIFF_TYPE__ intptr_t;
  8. typedef __SIZE_TYPE__ uintptr_t;
  9. #if __STDC_VERSION__ >= 201112L
  10. typedef union { long long __ll; long double __ld; } max_align_t;
  11. #endif
  12. #ifndef NULL
  13. #define NULL ((void*)0)
  14. #endif
  15. #undef offsetof
  16. #define offsetof(type, field) ((size_t)&((type *)0)->field)
  17. #if defined __i386__ || defined __x86_64__
  18. void *alloca(size_t size);
  19. #endif
  20. #endif
  21. /* Older glibc require a wint_t from <stddef.h> (when requested
  22. by __need_wint_t, as otherwise stddef.h isn't allowed to
  23. define this type). Note that this must be outside the normal
  24. _STDDEF_H guard, so that it works even when we've included the file
  25. already (without requiring wint_t). Some other libs define _WINT_T
  26. if they've already provided that type, so we can use that as guard.
  27. TCC defines __WINT_TYPE__ for us. */
  28. #if defined (__need_wint_t)
  29. #ifndef _WINT_T
  30. #define _WINT_T
  31. typedef __WINT_TYPE__ wint_t;
  32. #endif
  33. #undef __need_wint_t
  34. #endif