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138 lines
4.4 KiB
C
138 lines
4.4 KiB
C
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/*===---- stddef.h - Basic type definitions --------------------------------===
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*
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* Copyright (c) 2008 Eli Friedman
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*===-----------------------------------------------------------------------===
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*/
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#if !defined(__STDDEF_H) || defined(__need_ptrdiff_t) || \
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defined(__need_size_t) || defined(__need_wchar_t) || \
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defined(__need_NULL) || defined(__need_wint_t)
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#if !defined(__need_ptrdiff_t) && !defined(__need_size_t) && \
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!defined(__need_wchar_t) && !defined(__need_NULL) && \
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!defined(__need_wint_t)
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/* Always define miscellaneous pieces when modules are available. */
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#if !__has_feature(modules)
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#define __STDDEF_H
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#endif
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#define __need_ptrdiff_t
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#define __need_size_t
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#define __need_wchar_t
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#define __need_NULL
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#define __need_STDDEF_H_misc
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/* __need_wint_t is intentionally not defined here. */
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#endif
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#if defined(__need_ptrdiff_t)
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#if !defined(_PTRDIFF_T) || __has_feature(modules)
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/* Always define ptrdiff_t when modules are available. */
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#if !__has_feature(modules)
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#define _PTRDIFF_T
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#endif
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typedef __PTRDIFF_TYPE__ ptrdiff_t;
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#endif
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#undef __need_ptrdiff_t
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#endif /* defined(__need_ptrdiff_t) */
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#if defined(__need_size_t)
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#if !defined(_SIZE_T) || __has_feature(modules)
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/* Always define size_t when modules are available. */
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#if !__has_feature(modules)
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#define _SIZE_T
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#endif
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typedef __SIZE_TYPE__ size_t;
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#endif
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#undef __need_size_t
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#endif /*defined(__need_size_t) */
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#if defined(__need_STDDEF_H_misc)
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/* ISO9899:2011 7.20 (C11 Annex K): Define rsize_t if __STDC_WANT_LIB_EXT1__ is
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* enabled. */
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#if (defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1 && \
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!defined(_RSIZE_T)) || __has_feature(modules)
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/* Always define rsize_t when modules are available. */
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#if !__has_feature(modules)
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#define _RSIZE_T
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#endif
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typedef __SIZE_TYPE__ rsize_t;
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#endif
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#endif /* defined(__need_STDDEF_H_misc) */
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#if defined(__need_wchar_t)
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#ifndef __cplusplus
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/* Always define wchar_t when modules are available. */
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#if !defined(_WCHAR_T) || __has_feature(modules)
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#if !__has_feature(modules)
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#define _WCHAR_T
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#if defined(_MSC_EXTENSIONS)
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#define _WCHAR_T_DEFINED
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#endif
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#endif
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typedef __WCHAR_TYPE__ wchar_t;
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#endif
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#endif
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#undef __need_wchar_t
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#endif /* defined(__need_wchar_t) */
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#if defined(__need_NULL)
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#undef NULL
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#ifdef __cplusplus
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# if !defined(__MINGW32__) && !defined(_MSC_VER)
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# define NULL __null
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# else
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# define NULL 0
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# endif
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#else
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# define NULL ((void*)0)
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#endif
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#ifdef __cplusplus
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#if defined(_MSC_EXTENSIONS) && defined(_NATIVE_NULLPTR_SUPPORTED)
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namespace std { typedef decltype(nullptr) nullptr_t; }
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using ::std::nullptr_t;
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#endif
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#endif
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#undef __need_NULL
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#endif /* defined(__need_NULL) */
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#if defined(__need_STDDEF_H_misc)
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#if __STDC_VERSION__ >= 201112L || __cplusplus >= 201103L
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#include "__stddef_max_align_t.h"
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#endif
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#define offsetof(t, d) __builtin_offsetof(t, d)
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#undef __need_STDDEF_H_misc
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#endif /* defined(__need_STDDEF_H_misc) */
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/* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use
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__WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */
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#if defined(__need_wint_t)
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/* Always define wint_t when modules are available. */
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#if !defined(_WINT_T) || __has_feature(modules)
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#if !__has_feature(modules)
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#define _WINT_T
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#endif
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typedef __WINT_TYPE__ wint_t;
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#endif
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#undef __need_wint_t
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#endif /* __need_wint_t */
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#endif
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