1/* Declaration for error-reporting function
2 Copyright (C) 1995-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library 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 GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#ifndef _ERROR_H
20#define _ERROR_H 1
21
22#include <features.h>
23
24
25__BEGIN_DECLS
26
27/* Print a message with `fprintf (stderr, FORMAT, ...)';
28 if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
29 If STATUS is nonzero, terminate the program with `exit (STATUS)'. */
30
31extern void error (int __status, int __errnum, const char *__format, ...)
32 __attribute__ ((__format__ (__printf__, 3, 4)));
33
34extern void error_at_line (int __status, int __errnum, const char *__fname,
35 unsigned int __lineno, const char *__format, ...)
36 __attribute__ ((__format__ (__printf__, 5, 6)));
37
38/* If NULL, error will flush stdout, then print on stderr the program
39 name, a colon and a space. Otherwise, error will call this
40 function without parameters instead. */
41extern void (*error_print_progname) (void);
42
43/* This variable is incremented each time `error' is called. */
44extern unsigned int error_message_count;
45
46/* Sometimes we want to have at most one error per line. This
47 variable controls whether this mode is selected or not. */
48extern int error_one_per_line;
49
50#include <bits/floatn.h>
51#if defined __LDBL_COMPAT || __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
52# include <bits/error-ldbl.h>
53#else
54/* Do not inline error and error_at_line when long double has the same
55 size of double, nor when long double reuses the float128
56 implementation, because that would invalidate the redirections to the
57 compatibility functions. */
58# if defined __extern_always_inline && defined __va_arg_pack
59# include <bits/error.h>
60# endif
61#endif
62
63__END_DECLS
64
65#endif /* error.h */
66

source code of include/error.h