1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
/* Declarations for error-reporting functions.
Copyright (C) 1995-1997, 2003, 2006, 2008-2025 Free Software Foundation,
Inc.
This file is part of the GNU C Library.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _@GUARD_PREFIX@_ERROR_H
/* No @PRAGMA_SYSTEM_HEADER@ here, because it would prevent
-Wimplicit-fallthrough warnings for missing FALLTHROUGH after error(...)
or error_at_line(...) invocations. */
/* The include_next requires a split double-inclusion guard. */
#if @HAVE_ERROR_H@ && !defined __MINGW32__
# @INCLUDE_NEXT@ @NEXT_ERROR_H@
#endif
#ifndef _@GUARD_PREFIX@_ERROR_H
#define _@GUARD_PREFIX@_ERROR_H
/* This file uses _GL_ATTRIBUTE_ALWAYS_INLINE, _GL_ATTRIBUTE_COLD,
_GL_ATTRIBUTE_FORMAT, _GL_ATTRIBUTE_MAYBE_UNUSED. */
#if !_GL_CONFIG_H_INCLUDED
#error "Please include config.h first."
#endif
/* Get va_list. */
#include <stdarg.h>
/* Get 'unreachable'. */
#include <stddef.h>
/* Get _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM. */
#include <stdio.h>
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
#if GNULIB_VFPRINTF_POSIX
# define _GL_ATTRIBUTE_SPEC_PRINTF_ERROR _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD
#else
# define _GL_ATTRIBUTE_SPEC_PRINTF_ERROR _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM
#endif
/* Helper macro for supporting the compiler's control flow analysis better.
It evaluates its arguments only once.
Test case: Compile copy-file.c with "gcc -Wimplicit-fallthrough". */
#if defined __GNUC__ || defined __clang__
/* Use 'unreachable' to tell the compiler when the function call does not
return. */
# define __gl_error_call1(function, status, ...) \
((function) (status, __VA_ARGS__), \
(status) != 0 ? unreachable () : (void) 0)
/* If STATUS is a not a constant, the function call may or may not return;
therefore -Wimplicit-fallthrough will produce a warning. Use a compound
statement in order to evaluate STATUS only once.
If STATUS is a constant, we don't use a compound statement, because that
would trigger a -Wimplicit-fallthrough warning even when STATUS is != 0,
when not optimizing. This causes STATUS to be evaluated twice, but
that's OK since it does not have side effects. */
# define __gl_error_call(function, status, ...) \
(__builtin_constant_p (status) \
? __gl_error_call1 (function, status, __VA_ARGS__) \
: __extension__ \
({ \
int const __errstatus = status; \
__gl_error_call1 (function, __errstatus, __VA_ARGS__); \
}))
#else
# define __gl_error_call(function, status, ...) \
(function) (status, __VA_ARGS__)
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* Print a message with 'fprintf (stderr, FORMAT, ...)';
if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
If STATUS is nonzero, terminate the program with 'exit (STATUS)'. */
#if @REPLACE_ERROR@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef error
# define error rpl_error
# endif
_GL_FUNCDECL_RPL (error, void,
(int __status, int __errnum, const char *__format, ...),
_GL_ATTRIBUTE_COLD
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_ERROR, 3, 4)));
_GL_CXXALIAS_RPL (error, void,
(int __status, int __errnum, const char *__format, ...));
# ifndef _GL_NO_INLINE_ERROR
# undef error
# define error(status, ...) \
__gl_error_call (rpl_error, status, __VA_ARGS__)
# endif
#else
# if ! @HAVE_ERROR@
_GL_FUNCDECL_SYS (error, void,
(int __status, int __errnum, const char *__format, ...),
_GL_ATTRIBUTE_COLD
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_ERROR, 3, 4)));
# endif
_GL_CXXALIAS_SYS (error, void,
(int __status, int __errnum, const char *__format, ...));
# ifndef _GL_NO_INLINE_ERROR
# ifdef error
/* Only gcc ≥ 4.7 has __builtin_va_arg_pack. */
# if _GL_GNUC_PREREQ (4, 7)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wattributes"
_GL_ATTRIBUTE_MAYBE_UNUSED
static void
_GL_ATTRIBUTE_ALWAYS_INLINE _GL_ATTRIBUTE_COLD
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_ERROR, 3, 4))
_gl_inline_error (int __status, int __errnum, const char *__format, ...)
{
return error (__status, __errnum, __format, __builtin_va_arg_pack ());
}
# pragma GCC diagnostic pop
# undef error
# define error(status, ...) \
__gl_error_call (_gl_inline_error, status, __VA_ARGS__)
# endif
# else
# define error(status, ...) \
__gl_error_call (error, status, __VA_ARGS__)
# endif
# endif
#endif
#if __GLIBC__ >= 2
_GL_CXXALIASWARN (error);
#endif
/* Likewise. If FILENAME is non-NULL, include FILENAME:LINENO: in the
message. */
#if @REPLACE_ERROR_AT_LINE@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef error_at_line
# define error_at_line rpl_error_at_line
# endif
_GL_FUNCDECL_RPL (error_at_line, void,
(int __status, int __errnum, const char *__filename,
unsigned int __lineno, const char *__format, ...),
_GL_ATTRIBUTE_COLD
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_ERROR, 5, 6)));
_GL_CXXALIAS_RPL (error_at_line, void,
(int __status, int __errnum, const char *__filename,
unsigned int __lineno, const char *__format, ...));
# ifndef _GL_NO_INLINE_ERROR
# undef error_at_line
# define error_at_line(status, ...) \
__gl_error_call (rpl_error_at_line, status, __VA_ARGS__)
# endif
#else
# if ! @HAVE_ERROR_AT_LINE@
_GL_FUNCDECL_SYS (error_at_line, void,
(int __status, int __errnum, const char *__filename,
unsigned int __lineno, const char *__format, ...),
_GL_ATTRIBUTE_COLD
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_ERROR, 5, 6)));
# endif
_GL_CXXALIAS_SYS (error_at_line, void,
(int __status, int __errnum, const char *__filename,
unsigned int __lineno, const char *__format, ...));
# ifndef _GL_NO_INLINE_ERROR
# ifdef error_at_line
/* Only gcc ≥ 4.7 has __builtin_va_arg_pack. */
# if _GL_GNUC_PREREQ (4, 7)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wattributes"
_GL_ATTRIBUTE_MAYBE_UNUSED
static void
_GL_ATTRIBUTE_ALWAYS_INLINE _GL_ATTRIBUTE_COLD
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_ERROR, 5, 6))
_gl_inline_error_at_line (int __status, int __errnum, const char *__filename,
unsigned int __lineno, const char *__format, ...)
{
return error_at_line (__status, __errnum, __filename, __lineno, __format,
__builtin_va_arg_pack ());
}
# pragma GCC diagnostic pop
# undef error_at_line
# define error_at_line(status, ...) \
__gl_error_call (_gl_inline_error_at_line, status, __VA_ARGS__)
# endif
# else
# define error_at_line(status, ...) \
__gl_error_call (error_at_line, status, __VA_ARGS__)
# endif
# endif
#endif
_GL_CXXALIASWARN (error_at_line);
/* Print a message with 'vfprintf (stderr, FORMAT, ARGS)';
if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
If STATUS is nonzero, terminate the program with 'exit (STATUS)'.
Use the globals error_print_progname and error_message_count similarly
to error(). */
extern void verror (int __status, int __errnum, const char *__format,
va_list __args)
_GL_ATTRIBUTE_COLD
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 0));
#ifndef _GL_NO_INLINE_ERROR
# ifndef verror
# define verror(status, ...) \
__gl_error_call (verror, status, __VA_ARGS__)
# define GNULIB_defined_verror 1
# endif
#endif
/* Print a message with 'vfprintf (stderr, FORMAT, ARGS)';
if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
If STATUS is nonzero, terminate the program with 'exit (STATUS)'.
If FNAME is not NULL, prepend the message with "FNAME:LINENO:".
Use the globals error_print_progname, error_message_count, and
error_one_per_line similarly to error_at_line(). */
extern void verror_at_line (int __status, int __errnum, const char *__fname,
unsigned int __lineno, const char *__format,
va_list __args)
_GL_ATTRIBUTE_COLD
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 5, 0));
#ifdef _GL_NO_INLINE_ERROR
# ifndef verror_at_line
# define verror_at_line(status, ...) \
__gl_error_call (verror_at_line, status, __VA_ARGS__)
# define GNULIB_defined_verror_at_line 1
# endif
#endif
/* If NULL, error will flush stdout, then print on stderr the program
name, a colon and a space. Otherwise, error will call this
function without parameters instead. */
extern void (*error_print_progname) (void);
/* This variable is incremented each time 'error' is called. */
extern unsigned int error_message_count;
/* Sometimes we want to have at most one error per line. This
variable controls whether this mode is selected or not. */
extern int error_one_per_line;
#ifdef __cplusplus
}
#endif
#endif /* _@GUARD_PREFIX@_ERROR_H */
#endif /* _@GUARD_PREFIX@_ERROR_H */
|
