misc/error.h

   1 /* error.h -- declaration for error-reporting function
   2    Copyright (C) 1995, 1996 Software Foundation, Inc.
   3
   4 This file is part of the GNU C Library.  Its master source is NOT part of
   5 the C library, however.  The master source lives in /gd/gnu/lib.
   6
   7 The GNU C Library is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU Library General Public License as
   9 published by the Free Software Foundation; either version 2 of the
  10 License, or (at your option) any later version.
  11
  12 The GNU C Library is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 Library General Public License for more details.
  16
  17 You should have received a copy of the GNU Library General Public
  18 License along with the GNU C Library; see the file COPYING.LIB.  If
  19 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  20 Cambridge, MA 02139, USA.  */
  21
  22 #ifndef _error_h_
  23 #define _error_h_
  24
  25 #ifndef __attribute__
  26 /* This feature is available in gcc versions 2.5 and later.  */
  27 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
  28 #  define __attribute__(Spec) /* empty */
  29 # endif
  30 /* The __-protected variants of `format' and `printf' attributes
  31    are accepted by gcc versions 2.6.4 (effectively 2.7) and later.  */
  32 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  33 #  define __format__ format
  34 #  define __printf__ printf
  35 # endif
  36 #endif
  37
  38 #if defined (__STDC__) && __STDC__
  39
  40 /* Print a message with `fprintf (stderr, FORMAT, ...)';
  41    if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM).
  42    If STATUS is nonzero, terminate the program with `exit (STATUS)'.  */
  43
  44 extern void error (int status, int errnum, const char *format, ...)
  45      __attribute__ ((__format__ (__printf__, 3, 4)));
  46
  47 extern void error_at_line (int status, int errnum, const char *fname,
  48                            unsigned int lineno, const char *format, ...)
  49      __attribute__ ((__format__ (__printf__, 5, 6)));
  50
  51 /* If NULL, error will flush stdout, then print on stderr the program
  52    name, a colon and a space.  Otherwise, error will call this
  53    function without parameters instead.  */
  54 extern void (*error_print_progname) (void);
  55
  56 #else
  57 void error ();
  58 void error_at_line ();
  59 extern void (*error_print_progname) ();
  60 #endif
  61
  62 /* This variable is incremented each time `error' is called.  */
  63 extern unsigned int error_message_count;
  64
  65 /* Sometimes we want to have at most one error per line.  This
  66    variable controls whether this mode is selected or not.  */
  67 extern int error_one_per_line;
  68
  69 #endif /* _error_h_ */