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 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 #include "system.h"
  28 #else
  29 #include <stdio.h>
  30 #endif /* not EMACS */
  31
  32 #include "cpplib.h"
  33
  34 /* Print the file names and line numbers of the #include
  35    commands which led to the current file.  */
  36
  37 void
  38 cpp_print_containing_files (pfile)
  39      cpp_reader *pfile;
  40 {
  41   cpp_buffer *ip;
  42   int first = 1;
  43
  44   /* If stack of files hasn't changed since we last printed
  45      this info, don't repeat it.  */
  46   if (pfile->input_stack_listing_current)
  47     return;
  48
  49   ip = cpp_file_buffer (pfile);
  50
  51   /* Give up if we don't find a source file.  */
  52   if (ip == NULL)
  53     return;
  54
  55   /* Find the other, outer source files.  */
  56   while ((ip = CPP_PREV_BUFFER (ip)), ip != CPP_NULL_BUFFER (pfile))
  57     {
  58       long line, col;
  59       cpp_buf_line_and_col (ip, &line, &col);
  60       if (ip->fname != NULL)
  61         {
  62           if (first)
  63             {
  64               first = 0;
  65               fprintf (stderr, "In file included");
  66             }
  67           else
  68             fprintf (stderr, ",\n                ");
  69         }
  70
  71       fprintf (stderr, " from %s:%ld", ip->nominal_fname, line);
  72     }
  73   if (! first)
  74     fprintf (stderr, ":\n");
  75
  76   /* Record we have printed the status as of this time.  */
  77   pfile->input_stack_listing_current = 1;
  78 }
  79
  80 void
  81 cpp_file_line_for_message (pfile, filename, line, column)
  82      cpp_reader *pfile ATTRIBUTE_UNUSED;
  83      char *filename;
  84      int line, column;
  85 {
  86   if (column > 0)
  87     fprintf (stderr, "%s:%d:%d: ", filename, line, column);
  88   else
  89     fprintf (stderr, "%s:%d: ", filename, line);
  90 }
  91
  92 /* IS_ERROR is 2 for "fatal" error, 1 for error, 0 for warning */
  93
  94 void
  95 v_cpp_message (pfile, is_error, msg, ap)
  96   cpp_reader * pfile;
  97   int is_error;
  98   const char *msg;
  99   va_list ap;
 100 {
 101   if (!is_error)
 102     fprintf (stderr, "warning: ");
 103   else if (is_error == 2)
 104     pfile->errors = CPP_FATAL_LIMIT;
 105   else if (pfile->errors < CPP_FATAL_LIMIT)
 106     pfile->errors++;
 107   vfprintf (stderr, msg, ap);
 108   fprintf (stderr, "\n");
 109 }
 110
 111 void
 112 cpp_message VPROTO ((cpp_reader *pfile, int is_error, const char *msg, ...))
 113 {
 114 #ifndef ANSI_PROTOTYPES
 115   cpp_reader *pfile;
 116   int is_error;
 117   const char *msg;
 118 #endif
 119   va_list ap;
 120
 121   VA_START (ap, msg);
 122
 123 #ifndef ANSI_PROTOTYPES
 124   pfile = va_arg (ap, cpp_reader *);
 125   is_error = va_arg (ap, int);
 126   msg = va_arg (ap, const char *);
 127 #endif
 128
 129   v_cpp_message(pfile, is_error, msg, ap);
 130   va_end(ap);
 131 }
 132
 133 /* Same as cpp_error, except we consider the error to be "fatal",
 134    such as inconsistent options.  I.e. there is little point in continuing.
 135    (We do not exit, to support use of cpplib as a library.
 136    Instead, it is the caller's responsibility to check
 137    CPP_FATAL_ERRORS.  */
 138
 139 void
 140 cpp_fatal VPROTO ((cpp_reader *pfile, const char *str, ...))
 141 {
 142 #ifndef ANSI_PROTOTYPES
 143   cpp_reader *pfile;
 144   const char *str;
 145 #endif
 146   va_list ap;
 147
 148   VA_START (ap, str);
 149
 150 #ifndef ANSI_PROTOTYPES
 151   pfile = va_arg (ap, cpp_reader *);
 152   str = va_arg (ap, const char *);
 153 #endif
 154
 155   fprintf (stderr, "%s: ", progname);
 156   v_cpp_message (pfile, 2, str, ap);
 157   va_end(ap);
 158 }
 159 \f
 160 void
 161 cpp_pfatal_with_name (pfile, name)
 162      cpp_reader *pfile;
 163      const char *name;
 164 {
 165   cpp_perror_with_name (pfile, name);
 166 #ifdef VMS
 167   exit (vaxc$errno);
 168 #else
 169   exit (FATAL_EXIT_CODE);
 170 #endif
 171 }