lib/error.h

   1 /* Declaration for error-reporting function
   2    Copyright (C) 1995-1997, 2003, 2006, 2008-2020 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 /* Get _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM.  */
  23 #include <stdio.h>
  24
  25 #ifdef __cplusplus
  26 extern "C" {
  27 #endif
  28
  29 /* Print a message with 'fprintf (stderr, FORMAT, ...)';
  30    if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
  31    If STATUS is nonzero, terminate the program with 'exit (STATUS)'.  */
  32
  33 extern void error (int __status, int __errnum, const char *__format, ...)
  34 #if GNULIB_VFPRINTF_POSIX
  35      _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4))
  36 #else
  37      _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, 3, 4))
  38 #endif
  39      ;
  40
  41 extern void error_at_line (int __status, int __errnum, const char *__fname,
  42                            unsigned int __lineno, const char *__format, ...)
  43 #if GNULIB_VFPRINTF_POSIX
  44      _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 5, 6))
  45 #else
  46      _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, 5, 6))
  47 #endif
  48      ;
  49
  50 /* If NULL, error will flush stdout, then print on stderr the program
  51    name, a colon and a space.  Otherwise, error will call this
  52    function without parameters instead.  */
  53 extern void (*error_print_progname) (void);
  54
  55 /* This variable is incremented each time 'error' is called.  */
  56 extern unsigned int error_message_count;
  57
  58 /* Sometimes we want to have at most one error per line.  This
  59    variable controls whether this mode is selected or not.  */
  60 extern int error_one_per_line;
  61
  62 #ifdef __cplusplus
  63 }
  64 #endif
  65
  66 #endif /* error.h */