1*043036a2SApple OSS Distributions /*===---- stddef.h - Basic type definitions --------------------------------=== 2*043036a2SApple OSS Distributions * 3*043036a2SApple OSS Distributions * Copyright (c) 2008 Eli Friedman 4*043036a2SApple OSS Distributions * 5*043036a2SApple OSS Distributions * Permission is hereby granted, free of charge, to any person obtaining a copy 6*043036a2SApple OSS Distributions * of this software and associated documentation files (the "Software"), to deal 7*043036a2SApple OSS Distributions * in the Software without restriction, including without limitation the rights 8*043036a2SApple OSS Distributions * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9*043036a2SApple OSS Distributions * copies of the Software, and to permit persons to whom the Software is 10*043036a2SApple OSS Distributions * furnished to do so, subject to the following conditions: 11*043036a2SApple OSS Distributions * 12*043036a2SApple OSS Distributions * The above copyright notice and this permission notice shall be included in 13*043036a2SApple OSS Distributions * all copies or substantial portions of the Software. 14*043036a2SApple OSS Distributions * 15*043036a2SApple OSS Distributions * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16*043036a2SApple OSS Distributions * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17*043036a2SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18*043036a2SApple OSS Distributions * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19*043036a2SApple OSS Distributions * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20*043036a2SApple OSS Distributions * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 21*043036a2SApple OSS Distributions * THE SOFTWARE. 22*043036a2SApple OSS Distributions * 23*043036a2SApple OSS Distributions *===-----------------------------------------------------------------------=== 24*043036a2SApple OSS Distributions */ 25*043036a2SApple OSS Distributions 26*043036a2SApple OSS Distributions #if (defined(__has_include) && __has_include(<__xnu_libcxx_sentinel.h>) && !defined(XNU_LIBCXX_SDKROOT)) 27*043036a2SApple OSS Distributions 28*043036a2SApple OSS Distributions #if !__has_include_next(<stddef.h>) 29*043036a2SApple OSS Distributions #error Do not build with -nostdinc (use GCC_USE_STANDARD_INCLUDE_SEARCHING=NO) 30*043036a2SApple OSS Distributions #endif /* __has_include_next */ 31*043036a2SApple OSS Distributions 32*043036a2SApple OSS Distributions #include_next <stddef.h> 33*043036a2SApple OSS Distributions 34*043036a2SApple OSS Distributions #else /* (defined(__has_include) && __has_include(<__xnu_libcxx_sentinel.h>) && !defined(XNU_LIBCXX_SDKROOT)) */ 35*043036a2SApple OSS Distributions 36*043036a2SApple OSS Distributions #ifndef __STDDEF_H 37*043036a2SApple OSS Distributions #define __STDDEF_H 38*043036a2SApple OSS Distributions 39*043036a2SApple OSS Distributions #undef NULL 40*043036a2SApple OSS Distributions #ifdef __cplusplus 41*043036a2SApple OSS Distributions #if __cplusplus >= 201103L 42*043036a2SApple OSS Distributions #define NULL nullptr 43*043036a2SApple OSS Distributions #else 44*043036a2SApple OSS Distributions #undef __null // VC++ hack. 45*043036a2SApple OSS Distributions #define NULL __null 46*043036a2SApple OSS Distributions #endif 47*043036a2SApple OSS Distributions #else 48*043036a2SApple OSS Distributions #define NULL ((void*)0) 49*043036a2SApple OSS Distributions #endif 50*043036a2SApple OSS Distributions 51*043036a2SApple OSS Distributions #ifndef _PTRDIFF_T 52*043036a2SApple OSS Distributions #define _PTRDIFF_T 53*043036a2SApple OSS Distributions typedef __typeof__(((int*)NULL) - ((int*)NULL)) ptrdiff_t; 54*043036a2SApple OSS Distributions #endif 55*043036a2SApple OSS Distributions #ifndef _SIZE_T 56*043036a2SApple OSS Distributions #define _SIZE_T 57*043036a2SApple OSS Distributions typedef __typeof__(sizeof(int)) size_t; 58*043036a2SApple OSS Distributions #endif 59*043036a2SApple OSS Distributions #ifndef __cplusplus 60*043036a2SApple OSS Distributions #ifndef _WCHAR_T 61*043036a2SApple OSS Distributions #define _WCHAR_T 62*043036a2SApple OSS Distributions typedef __WCHAR_TYPE__ wchar_t; 63*043036a2SApple OSS Distributions #endif 64*043036a2SApple OSS Distributions #endif 65*043036a2SApple OSS Distributions 66*043036a2SApple OSS Distributions #ifndef offsetof 67*043036a2SApple OSS Distributions #define offsetof(t, d) __builtin_offsetof(t, d) 68*043036a2SApple OSS Distributions #endif 69*043036a2SApple OSS Distributions 70*043036a2SApple OSS Distributions #endif /* __STDDEF_H */ 71*043036a2SApple OSS Distributions 72*043036a2SApple OSS Distributions /* Some C libraries expect to see a wint_t here. Others (notably MinGW) will 73*043036a2SApple OSS Distributions * use __WINT_TYPE__ directly; accommodate both by requiring __need_wint_t 74*043036a2SApple OSS Distributions */ 75*043036a2SApple OSS Distributions #if defined(__need_wint_t) 76*043036a2SApple OSS Distributions #if !defined(_WINT_T) 77*043036a2SApple OSS Distributions #define _WINT_T 78*043036a2SApple OSS Distributions typedef __WINT_TYPE__ wint_t; 79*043036a2SApple OSS Distributions #endif /* _WINT_T */ 80*043036a2SApple OSS Distributions #undef __need_wint_t 81*043036a2SApple OSS Distributions #endif /* __need_wint_t */ 82*043036a2SApple OSS Distributions 83*043036a2SApple OSS Distributions #endif 84