1/* Declaration for error-reporting function
2   Copyright (C) 1995-1997, 2003, 2006, 2008-2014 Free Software Foundation,
3   Inc.
4   This file is part of the GNU C Library.
5
6   This program is free software: you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 3 of the License, or
9   (at your option) any later version.
10
11   This program is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   GNU General Public License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
18
19#ifndef _ERROR_H
20#define _ERROR_H 1
21
22/* The __attribute__ feature is available in gcc versions 2.5 and later.
23   The __-protected variants of the attributes 'format' and 'printf' are
24   accepted by gcc versions 2.6.4 (effectively 2.7) and later.
25   We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
26   gnulib and libintl do '#define printf __printf__' when they override
27   the 'printf' function.  */
28#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
29# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
30#else
31# define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
32#endif
33
34#ifdef __cplusplus
35extern "C" {
36#endif
37
38/* Print a message with 'fprintf (stderr, FORMAT, ...)';
39   if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
40   If STATUS is nonzero, terminate the program with 'exit (STATUS)'.  */
41
42extern void error (int __status, int __errnum, const char *__format, ...)
43     _GL_ATTRIBUTE_FORMAT ((__printf__, 3, 4));
44
45extern void error_at_line (int __status, int __errnum, const char *__fname,
46                           unsigned int __lineno, const char *__format, ...)
47     _GL_ATTRIBUTE_FORMAT ((__printf__, 5, 6));
48
49/* If NULL, error will flush stdout, then print on stderr the program
50   name, a colon and a space.  Otherwise, error will call this
51   function without parameters instead.  */
52extern void (*error_print_progname) (void);
53
54/* This variable is incremented each time 'error' is called.  */
55extern unsigned int error_message_count;
56
57/* Sometimes we want to have at most one error per line.  This
58   variable controls whether this mode is selected or not.  */
59extern int error_one_per_line;
60
61#ifdef __cplusplus
62}
63#endif
64
65#endif /* error.h */
66