lib/error.h

   1 /* error.h -- declaration for error-reporting function
   2    Copyright (C) 1995, 1996 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 #ifndef ERROR_H_
  19 # define ERROR_H_
  20
  21 # ifndef __attribute__
  22 /* This feature is available in gcc versions 2.5 and later.  */
  23 #  if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
  24 #   define __attribute__(Spec) /* empty */
  25 #  endif
  26 /* The __-protected variants of `format' and `printf' attributes
  27    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  28 #  if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  29 #   define __format__ format
  30 #   define __printf__ printf
  31 #  endif
  32 # endif
  33
  34 # if defined (__STDC__) && __STDC__
  35
  36 /* Print a message with `fprintf (stderr, FORMAT, ...)';
  37    if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
  38    If STATUS is nonzero, terminate the program with `exit (STATUS)'.  */
  39
  40 extern void error (int status, int errnum, const char *format, ...)
  41      __attribute__ ((__format__ (__printf__, 3, 4)));
  42
  43 extern void error_at_line (int status, int errnum, const char *fname,
  44                            unsigned int lineno, const char *format, ...)
  45      __attribute__ ((__format__ (__printf__, 5, 6)));
  46
  47 /* If NULL, error will flush stdout, then print on stderr the program
  48    name, a colon and a space.  Otherwise, error will call this
  49    function without parameters instead.  */
  50 extern void (*error_print_progname) (void);
  51
  52 # else
  53 void error ();
  54 void error_at_line ();
  55 extern void (*error_print_progname) ();
  56 # endif
  57
  58 /* This variable is incremented each time `error' is called.  */
  59 extern unsigned int error_message_count;
  60
  61 /* Sometimes we want to have at most one error per line.  This
  62    variable controls whether this mode is selected or not.  */
  63 extern int error_one_per_line;
  64
  65 #endif /* not ERROR_H_ */