clang  6.0.0svn
vadefs.h
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1 /* ===-------- vadefs.h ---------------------------------------------------===
2  *
3  * Permission is hereby granted, free of charge, to any person obtaining a copy
4  * of this software and associated documentation files (the "Software"), to deal
5  * in the Software without restriction, including without limitation the rights
6  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7  * copies of the Software, and to permit persons to whom the Software is
8  * furnished to do so, subject to the following conditions:
9  *
10  * The above copyright notice and this permission notice shall be included in
11  * all copies or substantial portions of the Software.
12  *
13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19  * THE SOFTWARE.
20  *
21  *===-----------------------------------------------------------------------===
22  */
23 
24 /* Only include this if we are aiming for MSVC compatibility. */
25 #ifndef _MSC_VER
26 #include_next <vadefs.h>
27 #else
28 
29 #ifndef __clang_vadefs_h
30 #define __clang_vadefs_h
31 
32 #include_next <vadefs.h>
33 
34 /* Override macros from vadefs.h with definitions that work with Clang. */
35 #ifdef _crt_va_start
36 #undef _crt_va_start
37 #define _crt_va_start(ap, param) __builtin_va_start(ap, param)
38 #endif
39 #ifdef _crt_va_end
40 #undef _crt_va_end
41 #define _crt_va_end(ap) __builtin_va_end(ap)
42 #endif
43 #ifdef _crt_va_arg
44 #undef _crt_va_arg
45 #define _crt_va_arg(ap, type) __builtin_va_arg(ap, type)
46 #endif
47 
48 /* VS 2015 switched to double underscore names, which is an improvement, but now
49  * we have to intercept those names too.
50  */
51 #ifdef __crt_va_start
52 #undef __crt_va_start
53 #define __crt_va_start(ap, param) __builtin_va_start(ap, param)
54 #endif
55 #ifdef __crt_va_end
56 #undef __crt_va_end
57 #define __crt_va_end(ap) __builtin_va_end(ap)
58 #endif
59 #ifdef __crt_va_arg
60 #undef __crt_va_arg
61 #define __crt_va_arg(ap, type) __builtin_va_arg(ap, type)
62 #endif
63 
64 #endif
65 #endif