Eli Friedman | 8ba179d | 2008-05-20 13:34:26 +0000 | [diff] [blame] | 1 | /*===---- stddef.h - Basic type definitions --------------------------------=== |
| 2 | * |
| 3 | * Copyright (c) 2008 Eli Friedman |
| 4 | * |
| 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: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be included in |
| 13 | * all copies or substantial portions of the Software. |
| 14 | * |
| 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 |
| 21 | * THE SOFTWARE. |
| 22 | * |
| 23 | *===-----------------------------------------------------------------------=== |
| 24 | */ |
| 25 | |
| 26 | #ifndef __STDDEF_H |
| 27 | #define __STDDEF_H |
| 28 | |
Ted Kremenek | 8da6bca | 2011-03-30 21:43:52 +0000 | [diff] [blame] | 29 | #ifndef _PTRDIFF_T |
| 30 | #define _PTRDIFF_T |
Eli Friedman | 8ba179d | 2008-05-20 13:34:26 +0000 | [diff] [blame] | 31 | typedef __typeof__(((int*)0)-((int*)0)) ptrdiff_t; |
Ted Kremenek | 8da6bca | 2011-03-30 21:43:52 +0000 | [diff] [blame] | 32 | #endif |
Ted Kremenek | 21259ba | 2010-03-08 23:23:45 +0000 | [diff] [blame] | 33 | #ifndef _SIZE_T |
| 34 | #define _SIZE_T |
Eli Friedman | 8ba179d | 2008-05-20 13:34:26 +0000 | [diff] [blame] | 35 | typedef __typeof__(sizeof(int)) size_t; |
Ted Kremenek | 21259ba | 2010-03-08 23:23:45 +0000 | [diff] [blame] | 36 | #endif |
Eli Friedman | 8ba179d | 2008-05-20 13:34:26 +0000 | [diff] [blame] | 37 | #ifndef __cplusplus |
Ted Kremenek | 21259ba | 2010-03-08 23:23:45 +0000 | [diff] [blame] | 38 | #ifndef _WCHAR_T |
| 39 | #define _WCHAR_T |
Chris Lattner | 6d6370e | 2010-09-05 23:29:49 +0000 | [diff] [blame] | 40 | typedef __WCHAR_TYPE__ wchar_t; |
Eli Friedman | 8ba179d | 2008-05-20 13:34:26 +0000 | [diff] [blame] | 41 | #endif |
Ted Kremenek | 21259ba | 2010-03-08 23:23:45 +0000 | [diff] [blame] | 42 | #endif |
Eli Friedman | 8ba179d | 2008-05-20 13:34:26 +0000 | [diff] [blame] | 43 | |
Ted Kremenek | 21259ba | 2010-03-08 23:23:45 +0000 | [diff] [blame] | 44 | #undef NULL |
Anders Carlsson | f8e61b3 | 2008-11-04 06:53:14 +0000 | [diff] [blame] | 45 | #ifdef __cplusplus |
Chris Lattner | 863e718 | 2010-08-03 22:13:56 +0000 | [diff] [blame] | 46 | #undef __null // VC++ hack. |
Douglas Gregor | 28d6cba | 2008-12-01 17:20:57 +0000 | [diff] [blame] | 47 | #define NULL __null |
Anders Carlsson | f8e61b3 | 2008-11-04 06:53:14 +0000 | [diff] [blame] | 48 | #else |
Eli Friedman | 8ba179d | 2008-05-20 13:34:26 +0000 | [diff] [blame] | 49 | #define NULL ((void*)0) |
Anders Carlsson | f8e61b3 | 2008-11-04 06:53:14 +0000 | [diff] [blame] | 50 | #endif |
| 51 | |
Eli Friedman | 8ba179d | 2008-05-20 13:34:26 +0000 | [diff] [blame] | 52 | #define offsetof(t, d) __builtin_offsetof(t, d) |
| 53 | |
| 54 | #endif /* __STDDEF_H */ |
NAKAMURA Takumi | 51f56fc | 2010-10-19 03:42:41 +0000 | [diff] [blame] | 55 | |
| 56 | /* Some C libraries expect to see a wint_t here. Others (notably MinGW) will use |
Chris Lattner | fc8f0e1 | 2011-04-15 05:22:18 +0000 | [diff] [blame] | 57 | __WINT_TYPE__ directly; accommodate both by requiring __need_wint_t */ |
NAKAMURA Takumi | 51f56fc | 2010-10-19 03:42:41 +0000 | [diff] [blame] | 58 | #if defined(__need_wint_t) |
| 59 | #if !defined(_WINT_T) |
| 60 | #define _WINT_T |
| 61 | typedef __WINT_TYPE__ wint_t; |
| 62 | #endif /* _WINT_T */ |
| 63 | #undef __need_wint_t |
| 64 | #endif /* __need_wint_t */ |