26 #if !defined(__STDDEF_H) || defined(__need_ptrdiff_t) || \
27 defined(__need_size_t) || defined(__need_wchar_t) || \
28 defined(__need_NULL) || defined(__need_wint_t)
30 #if !defined(__need_ptrdiff_t) && !defined(__need_size_t) && \
31 !defined(__need_wchar_t) && !defined(__need_NULL) && \
32 !defined(__need_wint_t)
34 #if !__has_feature(modules)
37 #define __need_ptrdiff_t
39 #define __need_wchar_t
41 #define __need_STDDEF_H_misc
45 #if defined(__need_ptrdiff_t)
46 #if !defined(_PTRDIFF_T) || __has_feature(modules)
48 #if !__has_feature(modules)
53 #undef __need_ptrdiff_t
56 #if defined(__need_size_t)
57 #if !defined(_SIZE_T) || __has_feature(modules)
59 #if !__has_feature(modules)
67 #if defined(__need_STDDEF_H_misc)
70 #if (defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1 && \
71 !defined(_RSIZE_T)) || __has_feature(modules)
73 #if !__has_feature(modules)
76 typedef __SIZE_TYPE__ rsize_t;
80 #if defined(__need_wchar_t)
83 #if !defined(_WCHAR_T) || __has_feature(modules)
84 #if !__has_feature(modules)
86 #if defined(_MSC_EXTENSIONS)
87 #define _WCHAR_T_DEFINED
96 #if defined(__need_NULL)
99 # if !defined(__MINGW32__) && !defined(_MSC_VER)
105 # define NULL ((void*)0)
108 #if defined(_MSC_EXTENSIONS) && defined(_NATIVE_NULLPTR_SUPPORTED)
109 namespace std {
typedef decltype(
nullptr) nullptr_t; }
110 using ::std::nullptr_t;
116 #if defined(__need_STDDEF_H_misc)
117 #if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
120 #define offsetof(t, d) __builtin_offsetof(t, d)
121 #undef __need_STDDEF_H_misc
126 #if defined(__need_wint_t)
128 #if !defined(_WINT_T) || __has_feature(modules)
129 #if !__has_feature(modules)
132 typedef __WINT_TYPE__ wint_t;
__PTRDIFF_TYPE__ ptrdiff_t