gcc/cpperror.c

   1 /* Default error handlers for CPP Library.
   2    Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 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 i;
  41   int first = 1;
  42
  43   /* If stack of files hasn't changed since we last printed
  44      this info, don't repeat it.  */
  45   if (pfile->input_stack_listing_current)
  46     return;
  47
  48   ip = cpp_file_buffer (pfile);
  49
  50   /* Give up if we don't find a source file.  */
  51   if (ip == NULL)
  52     return;
  53
  54   /* Find the other, outer source files.  */
  55   while ((ip = CPP_PREV_BUFFER (ip)), ip != CPP_NULL_BUFFER (pfile))
  56     {
  57       long line, col;
  58       cpp_buf_line_and_col (ip, &line, &col);
  59       if (ip->fname != NULL)
  60         {
  61           if (first)
  62             {
  63               first = 0;
  64               fprintf (stderr, "In file included");
  65             }
  66           else
  67             fprintf (stderr, ",\n                ");
  68         }
  69
  70       fprintf (stderr, " from %s:%d", ip->nominal_fname, line);
  71     }
  72   if (! first)
  73     fprintf (stderr, ":\n");
  74
  75   /* Record we have printed the status as of this time.  */
  76   pfile->input_stack_listing_current = 1;
  77 }
  78
  79 void
  80 cpp_file_line_for_message (pfile, filename, line, column)
  81      cpp_reader *pfile;
  82      char *filename;
  83      int line, column;
  84 {
  85   if (column > 0)
  86     fprintf (stderr, "%s:%d:%d: ", filename, line, column);
  87   else
  88     fprintf (stderr, "%s:%d: ", filename, line);
  89 }
  90
  91 /* IS_ERROR is 2 for "fatal" error, 1 for error, 0 for warning */
  92
  93 void
  94 cpp_message (pfile, is_error, msg, arg1, arg2, arg3)
  95      int is_error;
  96      cpp_reader *pfile;
  97      char *msg;
  98      char *arg1, *arg2, *arg3;
  99 {
 100   if (!is_error)
 101     fprintf (stderr, "warning: ");
 102   else if (is_error == 2)
 103     pfile->errors = CPP_FATAL_LIMIT;
 104   else if (pfile->errors < CPP_FATAL_LIMIT)
 105     pfile->errors++;
 106   fprintf (stderr, msg, arg1, arg2, arg3);
 107   fprintf (stderr, "\n");
 108 }
 109
 110 /* Same as cpp_error, except we consider the error to be "fatal",
 111    such as inconsistent options.  I.e. there is little point in continuing.
 112    (We do not exit, to support use of cpplib as a library.
 113    Instead, it is the caller's responsibility to check
 114    CPP_FATAL_ERRORS.  */
 115
 116 void
 117 cpp_fatal (pfile, str, arg)
 118      cpp_reader *pfile;
 119      char *str, *arg;
 120 {
 121   fprintf (stderr, "%s: ", progname);
 122   cpp_message (pfile, 2, str, arg);
 123 }
 124 \f
 125 void
 126 cpp_pfatal_with_name (pfile, name)
 127      cpp_reader *pfile;
 128      char *name;
 129 {
 130   cpp_perror_with_name (pfile, name);
 131 #ifdef VMS
 132   exit (vaxc$errno);
 133 #else
 134   exit (FATAL_EXIT_CODE);
 135 #endif
 136 }