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