misc/error.h

   1 /* Declaration for error-reporting function
   2    Copyright (C) 1995-2017 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    <http://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
  31 extern void error (int __status, int __errnum, const char *__format, ...)
  32      __attribute__ ((__format__ (__printf__, 3, 4)));
  33
  34 extern 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.  */
  41 extern void (*error_print_progname) (void);
  42
  43 /* This variable is incremented each time `error' is called.  */
  44 extern 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.  */
  48 extern int error_one_per_line;
  49
  50
  51 #if defined __extern_always_inline && defined __va_arg_pack
  52 # include <bits/error.h>
  53 #endif
  54
  55 __END_DECLS
  56
  57 #endif /* error.h */