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stdarg.h
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1 /* Copyright (C) 1989, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
2 
3 This file is part of GCC.
4 
5 GCC is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9 
10 GCC is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14 
15 You should have received a copy of the GNU General Public License
16 along with GCC; see the file COPYING. If not, write to
17 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA. */
19 
20 /* As a special exception, if you include this header file into source
21  files compiled by GCC, this header file does not by itself cause
22  the resulting executable to be covered by the GNU General Public
23  License. This exception does not however invalidate any other
24  reasons why the executable file might be covered by the GNU General
25  Public License. */
26 
27 /*
28  * ISO C Standard: 7.15 Variable arguments <stdarg.h>
29  */
30 
31 #ifndef _STDARG_H
32 #ifndef _ANSI_STDARG_H_
33 #ifndef __need___va_list
34 #define _STDARG_H
35 #define _ANSI_STDARG_H_
36 #endif /* not __need___va_list */
37 #undef __need___va_list
38 
39 /* Define __gnuc_va_list. */
40 
41 #ifndef __GNUC_VA_LIST
42 #define __GNUC_VA_LIST
43 typedef __builtin_va_list __gnuc_va_list;
44 #endif
45 
46 /* Define the standard macros for the user,
47  if this invocation was from the user program. */
48 #ifdef _STDARG_H
49 
50 #define va_start(v,l) __builtin_va_start(v,l)
51 #define va_end(v) __builtin_va_end(v)
52 #define va_arg(v,l) __builtin_va_arg(v,l)
53 #if !defined(__STRICT_ANSI__) || __STDC_VERSION__ + 0 >= 199900L
54 #define va_copy(d,s) __builtin_va_copy(d,s)
55 #endif
56 #define __va_copy(d,s) __builtin_va_copy(d,s)
57 
58 /* Define va_list, if desired, from __gnuc_va_list. */
59 /* We deliberately do not define va_list when called from
60  stdio.h, because ANSI C says that stdio.h is not supposed to define
61  va_list. stdio.h needs to have access to that data type,
62  but must not use that name. It should use the name __gnuc_va_list,
63  which is safe because it is reserved for the implementation. */
64 
65 #ifdef _HIDDEN_VA_LIST /* On OSF1, this means varargs.h is "half-loaded". */
66 #undef _VA_LIST
67 #endif
68 
69 #ifdef _BSD_VA_LIST
70 #undef _BSD_VA_LIST
71 #endif
72 
73 #if defined(__svr4__) || (defined(_SCO_DS) && !defined(__VA_LIST))
74 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
75  so we must avoid testing it and setting it here.
76  SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
77  have no conflict with that. */
78 #ifndef _VA_LIST_
79 #define _VA_LIST_
80 #ifdef __i860__
81 #ifndef _VA_LIST
82 #define _VA_LIST va_list
83 #endif
84 #endif /* __i860__ */
85 typedef __gnuc_va_list va_list;
86 #ifdef _SCO_DS
87 #define __VA_LIST
88 #endif
89 #endif /* _VA_LIST_ */
90 #else /* not __svr4__ || _SCO_DS */
91 
92 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
93  But on BSD NET2 we must not test or define or undef it.
94  (Note that the comments in NET 2's ansi.h
95  are incorrect for _VA_LIST_--see stdio.h!) */
96 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
97 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5 */
98 #ifndef _VA_LIST_DEFINED
99 /* The macro _VA_LIST is used in SCO Unix 3.2. */
100 #ifndef _VA_LIST
101 /* The macro _VA_LIST_T_H is used in the Bull dpx2 */
102 #ifndef _VA_LIST_T_H
103 /* The macro __va_list__ is used by BeOS. */
104 #ifndef __va_list__
106 #endif /* not __va_list__ */
107 #endif /* not _VA_LIST_T_H */
108 #endif /* not _VA_LIST */
109 #endif /* not _VA_LIST_DEFINED */
110 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
111 #define _VA_LIST_
112 #endif
113 #ifndef _VA_LIST
114 #define _VA_LIST
115 #endif
116 #ifndef _VA_LIST_DEFINED
117 #define _VA_LIST_DEFINED
118 #endif
119 #ifndef _VA_LIST_T_H
120 #define _VA_LIST_T_H
121 #endif
122 #ifndef __va_list__
123 #define __va_list__
124 #endif
125 
126 #endif /* not _VA_LIST_, except on certain systems */
127 
128 #endif /* not __svr4__ */
129 
130 #endif /* _STDARG_H */
131 
132 #endif /* not _ANSI_STDARG_H_ */
133 #endif /* not _STDARG_H */
va_list
__gnuc_va_list va_list
Definition: stdarg.h:105
__gnuc_va_list
__builtin_va_list __gnuc_va_list
Definition: stdarg.h:43