1 /*===---- stddef.h - Basic type definitions --------------------------------===
3 * Copyright (c) 2008 Eli Friedman
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 *===-----------------------------------------------------------------------===
29 #if !defined(_PTRDIFF_T) || __has_feature(modules)
30 /* Always define ptrdiff_t when modules are available. */
31 #if !__has_feature(modules)
34 typedef __PTRDIFF_TYPE__ ptrdiff_t;
37 #if !defined(_SIZE_T) || __has_feature(modules)
38 /* Always define size_t when modules are available. */
39 #if !__has_feature(modules)
42 typedef __SIZE_TYPE__ size_t;
45 /* ISO9899:2011 7.20 (C11 Annex K): Define rsize_t if __STDC_WANT_LIB_EXT1__ is
47 #if (defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1 && \
48 !defined(_RSIZE_T)) || __has_feature(modules)
49 /* Always define rsize_t when modules are available. */
50 #if !__has_feature(modules)
53 typedef __SIZE_TYPE__ rsize_t;
57 /* Always define wchar_t when modules are available. */
58 #if !defined(_WCHAR_T) || __has_feature(modules)
59 #if !__has_feature(modules)
61 #if defined(_MSC_EXTENSIONS)
62 #define _WCHAR_T_DEFINED
65 typedef __WCHAR_TYPE__ wchar_t;
71 # if !defined(__MINGW32__) && !defined(_MSC_VER)
77 # define NULL ((void*)0)
81 #if defined(_MSC_EXTENSIONS) && defined(_NATIVE_NULLPTR_SUPPORTED)
82 namespace std { typedef decltype(nullptr) nullptr_t; }
83 using ::std::nullptr_t;
87 #define offsetof(t, d) __builtin_offsetof(t, d)
89 #endif /* __STDDEF_H */
91 /* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use
92 __WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */
93 #if defined(__need_wint_t)
94 /* Always define wint_t when modules are available. */
95 #if !defined(_WINT_T) || __has_feature(modules)
96 #if !__has_feature(modules)
99 typedef __WINT_TYPE__ wint_t;
102 #endif /* __need_wint_t */