1: /* Declaration for error-reporting function
2: Copyright (C) 1995-1997, 2003, 2006, 2008-2019 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 <https://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: /* On mingw, the flavor of printf depends on whether the extensions module
35: * is in use; the check for <stdio.h> determines the witness macro. */
36: #ifndef _GL_ATTRIBUTE_SPEC_PRINTF
37: # if GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU
38: # define _GL_ATTRIBUTE_SPEC_PRINTF __gnu_printf__
39: # else
40: # define _GL_ATTRIBUTE_SPEC_PRINTF __printf__
41: # endif
42: #endif
43:
44: #ifdef __cplusplus
45: extern "C" {
46: #endif
47:
48: /* Print a message with 'fprintf (stderr, FORMAT, ...)';
49: if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
50: If STATUS is nonzero, terminate the program with 'exit (STATUS)'. */
51:
52: extern void error (int __status, int __errnum, const char *__format, ...)
53: _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF, 3, 4));
54:
55: extern void error_at_line (int __status, int __errnum, const char *__fname,
56: unsigned int __lineno, const char *__format, ...)
57: _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF, 5, 6));
58:
59: /* If NULL, error will flush stdout, then print on stderr the program
60: name, a colon and a space. Otherwise, error will call this
61: function without parameters instead. */
62: extern DLL_VARIABLE void (*error_print_progname) (void);
63:
64: /* This variable is incremented each time 'error' is called. */
65: extern DLL_VARIABLE unsigned int error_message_count;
66:
67: /* Sometimes we want to have at most one error per line. This
68: variable controls whether this mode is selected or not. */
69: extern DLL_VARIABLE int error_one_per_line;
70:
71: #ifdef __cplusplus
72: }
73: #endif
74:
75: #endif /* error.h */
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