lib/error.h

   1 /* Declaration for error-reporting function
   2    Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
   3
   4
   5    NOTE: The canonical source of this file is maintained with the GNU C Library.
   6    Bugs can be reported to bug-glibc@prep.ai.mit.edu.
   7
   8    This program is free software; you can redistribute it and/or modify it
   9    under the terms of the GNU General Public License as published by the
  10    Free Software Foundation; either version 2, or (at your option) any
  11    later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  21    USA.  */
  22
  23 #ifndef _ERROR_H
  24 #define _ERROR_H 1
  25
  26 #ifndef __attribute__
  27 /* This feature is available in gcc versions 2.5 and later.  */
  28 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
  29 #  define __attribute__(Spec) /* empty */
  30 # endif
  31 /* The __-protected variants of `format' and `printf' attributes
  32    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  33 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  34 #  define __format__ format
  35 #  define __printf__ printf
  36 # endif
  37 #endif
  38
  39 #ifdef  __cplusplus
  40 extern "C" {
  41 #endif
  42
  43 #if defined (__STDC__) && __STDC__
  44
  45 /* Print a message with `fprintf (stderr, FORMAT, ...)';
  46    if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
  47    If STATUS is nonzero, terminate the program with `exit (STATUS)'.  */
  48
  49 extern void error (int status, int errnum, const char *format, ...)
  50      __attribute__ ((__format__ (__printf__, 3, 4)));
  51
  52 extern void error_at_line (int status, int errnum, const char *fname,
  53                            unsigned int lineno, const char *format, ...)
  54      __attribute__ ((__format__ (__printf__, 5, 6)));
  55
  56 /* If NULL, error will flush stdout, then print on stderr the program
  57    name, a colon and a space.  Otherwise, error will call this
  58    function without parameters instead.  */
  59 extern void (*error_print_progname) (void);
  60
  61 #else
  62 void error ();
  63 void error_at_line ();
  64 extern void (*error_print_progname) ();
  65 #endif
  66
  67 /* This variable is incremented each time `error' is called.  */
  68 extern unsigned int error_message_count;
  69
  70 /* Sometimes we want to have at most one error per line.  This
  71    variable controls whether this mode is selected or not.  */
  72 extern int error_one_per_line;
  73
  74 #ifdef  __cplusplus
  75 }
  76 #endif
  77
  78 #endif /* error.h */