| 1 | /*===---- stdarg.h - Variable argument handling ----------------------------=== |
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| 2 | * |
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| 3 | * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | * See https://llvm.org/LICENSE.txt for license information. |
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| 5 | * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | * |
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| 7 | *===-----------------------------------------------------------------------=== |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef __STDARG_H |
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| 11 | |
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| 12 | #ifndef __GNUC_VA_LIST |
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| 13 | #define __GNUC_VA_LIST |
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| 14 | typedef __builtin_va_list __gnuc_va_list; |
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| 15 | #endif |
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| 16 | |
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| 17 | #ifdef __need___va_list |
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| 18 | #undef __need___va_list |
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| 19 | #else |
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| 20 | #define __STDARG_H |
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| 21 | #ifndef _VA_LIST |
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| 22 | typedef __builtin_va_list va_list; |
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| 23 | #define _VA_LIST |
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| 24 | #endif |
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| 25 | |
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| 26 | /* FIXME: This is using the placeholder dates Clang produces for these macros |
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| 27 | in C2x mode; switch to the correct values once they've been published. */ |
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| 28 | #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202000L |
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| 29 | /* C2x does not require the second parameter for va_start. */ |
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| 30 | #define va_start(ap, ...) __builtin_va_start(ap, 0) |
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| 31 | #else |
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| 32 | /* Versions before C2x do require the second parameter. */ |
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| 33 | #define va_start(ap, param) __builtin_va_start(ap, param) |
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| 34 | #endif |
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| 35 | #define va_end(ap) __builtin_va_end(ap) |
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| 36 | #define va_arg(ap, type) __builtin_va_arg(ap, type) |
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| 37 | |
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| 38 | /* GCC always defines __va_copy, but does not define va_copy unless in c99 mode |
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| 39 | * or -ansi is not specified, since it was not part of C90. |
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| 40 | */ |
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| 41 | #define __va_copy(d,s) __builtin_va_copy(d,s) |
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| 42 | |
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| 43 | #if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ |
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| 44 | (defined(__cplusplus) && __cplusplus >= 201103L) || \ |
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| 45 | !defined(__STRICT_ANSI__) |
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| 46 | #define va_copy(dest, src) __builtin_va_copy(dest, src) |
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| 47 | #endif |
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| 48 | |
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| 49 | #endif /* __STDARG_H */ |
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| 50 | |
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| 51 | #endif /* not __STDARG_H */ |
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| 52 | |
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