gcc/cpperror.c

   1 /* Default error handlers for CPP Library.
   2    Copyright (C) 1986, 87, 89, 92 - 95, 1998 Free Software Foundation, Inc.
   3    Written by Per Bothner, 1994.
   4    Based on CCCP program by by Paul Rubin, June 1986
   5    Adapted to ANSI C, Richard Stallman, Jan 1987
   6
   7 This program is free software; you can redistribute it and/or modify it
   8 under the terms of the GNU General Public License as published by the
   9 Free Software Foundation; either version 2, or (at your option) any
  10 later version.
  11
  12 This program 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
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20
  21  In other words, you are welcome to use, share and improve this program.
  22  You are forbidden to forbid anyone else to use, share and improve
  23  what you give them.   Help stamp out software-hoarding!  */
  24
  25 #ifndef EMACS
  26 #include "config.h"
  27 #endif /* not EMACS */
  28
  29 #include "cpplib.h"
  30 #include <stdio.h>
  31
  32 /* Print the file names and line numbers of the #include
  33    commands which led to the current file.  */
  34
  35 void
  36 cpp_print_containing_files (pfile)
  37      cpp_reader *pfile;
  38 {
  39   cpp_buffer *ip;
  40   int first = 1;
  41
  42   /* If stack of files hasn't changed since we last printed
  43      this info, don't repeat it.  */
  44   if (pfile->input_stack_listing_current)
  45     return;
  46
  47   ip = cpp_file_buffer (pfile);
  48
  49   /* Give up if we don't find a source file.  */
  50   if (ip == NULL)
  51     return;
  52
  53   /* Find the other, outer source files.  */
  54   while ((ip = CPP_PREV_BUFFER (ip)), ip != CPP_NULL_BUFFER (pfile))
  55     {
  56       long line, col;
  57       cpp_buf_line_and_col (ip, &line, &col);
  58       if (ip->fname != NULL)
  59         {
  60           if (first)
  61             {
  62               first = 0;
  63               fprintf (stderr, "In file included");
  64             }
  65           else
  66             fprintf (stderr, ",\n                ");
  67         }
  68
  69       fprintf (stderr, " from %s:%ld", ip->nominal_fname, line);
  70     }
  71   if (! first)
  72     fprintf (stderr, ":\n");
  73
  74   /* Record we have printed the status as of this time.  */
  75   pfile->input_stack_listing_current = 1;
  76 }
  77
  78 void
  79 cpp_file_line_for_message (pfile, filename, line, column)
  80      cpp_reader *pfile;
  81      char *filename;
  82      int line, column;
  83 {
  84   if (column > 0)
  85     fprintf (stderr, "%s:%d:%d: ", filename, line, column);
  86   else
  87     fprintf (stderr, "%s:%d: ", filename, line);
  88 }
  89
  90 /* IS_ERROR is 2 for "fatal" error, 1 for error, 0 for warning */
  91
  92 void
  93 cpp_message (pfile, is_error, msg, arg1, arg2, arg3)
  94      int is_error;
  95      cpp_reader *pfile;
  96      char *msg;
  97      char *arg1, *arg2, *arg3;
  98 {
  99   if (!is_error)
 100     fprintf (stderr, "warning: ");
 101   else if (is_error == 2)
 102     pfile->errors = CPP_FATAL_LIMIT;
 103   else if (pfile->errors < CPP_FATAL_LIMIT)
 104     pfile->errors++;
 105   fprintf (stderr, msg, arg1, arg2, arg3);
 106   fprintf (stderr, "\n");
 107 }
 108
 109 /* Same as cpp_error, except we consider the error to be "fatal",
 110    such as inconsistent options.  I.e. there is little point in continuing.
 111    (We do not exit, to support use of cpplib as a library.
 112    Instead, it is the caller's responsibility to check
 113    CPP_FATAL_ERRORS.  */
 114
 115 void
 116 cpp_fatal (pfile, str, arg)
 117      cpp_reader *pfile;
 118      char *str, *arg;
 119 {
 120   fprintf (stderr, "%s: ", progname);
 121   cpp_message (pfile, 2, str, arg);
 122 }
 123 \f
 124 void
 125 cpp_pfatal_with_name (pfile, name)
 126      cpp_reader *pfile;
 127      char *name;
 128 {
 129   cpp_perror_with_name (pfile, name);
 130 #ifdef VMS
 131   exit (vaxc$errno);
 132 #else
 133   exit (FATAL_EXIT_CODE);
 134 #endif
 135 }