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301 lines
7.9 KiB
C
301 lines
7.9 KiB
C
/* Default error handlers for CPP Library.
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Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1998, 1999, 2000,
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2001, 2002 Free Software Foundation, Inc.
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Written by Per Bothner, 1994.
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Based on CCCP program by Paul Rubin, June 1986
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Adapted to ANSI C, Richard Stallman, Jan 1987
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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In other words, you are welcome to use, share and improve this program.
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You are forbidden to forbid anyone else to use, share and improve
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what you give them. Help stamp out software-hoarding! */
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#include "config.h"
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#include "system.h"
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#include "cpplib.h"
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#include "cpphash.h"
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#include "intl.h"
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static void print_location PARAMS ((cpp_reader *, unsigned int, unsigned int));
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/* Don't remove the blank before do, as otherwise the exgettext
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script will mistake this as a function definition */
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#define v_message(msgid, ap) \
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do { vfprintf (stderr, _(msgid), ap); putc ('\n', stderr); } while (0)
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/* Print the logical file location (LINE, COL) in preparation for a
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diagnostic. Outputs the #include chain if it has changed. */
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static void
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print_location (pfile, line, col)
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cpp_reader *pfile;
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unsigned int line, col;
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{
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cpp_buffer *buffer = pfile->buffer;
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if (!buffer)
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fprintf (stderr, "%s: ", progname);
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else
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{
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const struct line_map *map;
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if (line == 0)
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{
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line = pfile->cur_token[-1].line;
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col = pfile->cur_token[-1].col;
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}
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map = lookup_line (&pfile->line_maps, line);
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print_containing_files (&pfile->line_maps, map);
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line = SOURCE_LINE (map, line);
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if (col == 0)
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col = 1;
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if (line == 0)
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fprintf (stderr, "%s:", map->to_file);
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else if (CPP_OPTION (pfile, show_column) == 0)
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fprintf (stderr, "%s:%u:", map->to_file, line);
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else
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fprintf (stderr, "%s:%u:%u:", map->to_file, line, col);
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fputc (' ', stderr);
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}
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}
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/* Set up for an error message: print the file and line, bump the error
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counter, etc. LINE is the logical line number; zero means to print
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at the location of the previously lexed token, which tends to be the
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correct place by default. Returns 0 if the error has been suppressed. */
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int
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_cpp_begin_message (pfile, code, line, column)
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cpp_reader *pfile;
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enum error_type code;
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unsigned int line, column;
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{
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int is_warning = 0;
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switch (code)
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{
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case PEDWARN:
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case WARNING:
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if (CPP_IN_SYSTEM_HEADER (pfile)
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&& ! CPP_OPTION (pfile, warn_system_headers))
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return 0;
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case WARNING_SYSHDR:
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if (CPP_OPTION (pfile, warnings_are_errors)
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|| (code == PEDWARN && CPP_OPTION (pfile, pedantic_errors)))
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{
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if (CPP_OPTION (pfile, inhibit_errors))
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return 0;
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if (pfile->errors < CPP_FATAL_LIMIT)
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pfile->errors++;
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}
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else
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{
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if (CPP_OPTION (pfile, inhibit_warnings))
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return 0;
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is_warning = 1;
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}
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break;
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case ERROR:
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if (CPP_OPTION (pfile, inhibit_errors))
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return 0;
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if (pfile->errors < CPP_FATAL_LIMIT)
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pfile->errors++;
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break;
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/* Fatal errors cannot be inhibited. */
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case FATAL:
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pfile->errors = CPP_FATAL_LIMIT;
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break;
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case ICE:
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fprintf (stderr, _("internal error: "));
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pfile->errors = CPP_FATAL_LIMIT;
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break;
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}
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print_location (pfile, line, column);
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if (is_warning)
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fputs (_("warning: "), stderr);
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return 1;
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}
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/* Exported interface. */
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/* For reporting internal errors. Prints "internal error: " for you,
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otherwise identical to cpp_fatal. */
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void
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cpp_ice VPARAMS ((cpp_reader *pfile, const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, const char *, msgid);
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if (_cpp_begin_message (pfile, ICE, 0, 0))
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Same as cpp_error, except we consider the error to be "fatal",
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such as inconsistent options. I.e. there is little point in continuing.
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(We do not exit, to support use of cpplib as a library.
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Instead, it is the caller's responsibility to check
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CPP_FATAL_ERRORS. */
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void
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cpp_fatal VPARAMS ((cpp_reader *pfile, const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, const char *, msgid);
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if (_cpp_begin_message (pfile, FATAL, 0, 0))
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Print an error at the location of the previously lexed token. */
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void
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cpp_error VPARAMS ((cpp_reader * pfile, const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, const char *, msgid);
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if (_cpp_begin_message (pfile, ERROR, 0, 0))
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Print an error at a specific location. */
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void
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cpp_error_with_line VPARAMS ((cpp_reader *pfile, int line, int column,
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const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, int, line);
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VA_FIXEDARG (ap, int, column);
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VA_FIXEDARG (ap, const char *, msgid);
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if (_cpp_begin_message (pfile, ERROR, line, column))
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Error including a message from `errno'. */
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void
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cpp_error_from_errno (pfile, name)
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cpp_reader *pfile;
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const char *name;
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{
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cpp_error (pfile, "%s: %s", name, xstrerror (errno));
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}
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/* Print a warning at the location of the previously lexed token. */
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void
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cpp_warning VPARAMS ((cpp_reader * pfile, const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, const char *, msgid);
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if (_cpp_begin_message (pfile, WARNING, 0, 0))
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Print a warning at a specific location. */
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void
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cpp_warning_with_line VPARAMS ((cpp_reader * pfile, int line, int column,
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const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, int, line);
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VA_FIXEDARG (ap, int, column);
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VA_FIXEDARG (ap, const char *, msgid);
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if (_cpp_begin_message (pfile, WARNING, line, column))
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Pedwarn at the location of the previously lexed token. */
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void
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cpp_pedwarn VPARAMS ((cpp_reader * pfile, const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, const char *, msgid);
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if (_cpp_begin_message (pfile, PEDWARN, 0, 0))
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Pedwarn at a specific location. */
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void
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cpp_pedwarn_with_line VPARAMS ((cpp_reader * pfile, int line, int column,
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const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, int, line);
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VA_FIXEDARG (ap, int, column);
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VA_FIXEDARG (ap, const char *, msgid);
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if (_cpp_begin_message (pfile, PEDWARN, line, column))
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Print an error message not associated with the translation unit. */
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void
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cpp_notice VPARAMS ((cpp_reader *pfile, const char *msgid, ...))
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{
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VA_OPEN (ap, msgid);
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VA_FIXEDARG (ap, cpp_reader *, pfile);
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VA_FIXEDARG (ap, const char *, msgid);
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if (pfile->errors < CPP_FATAL_LIMIT)
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pfile->errors++;
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v_message (msgid, ap);
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VA_CLOSE (ap);
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}
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/* Print an error message originating from ERRNO and not associated
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with the translation unit. */
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void
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cpp_notice_from_errno (pfile, name)
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cpp_reader *pfile;
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const char *name;
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{
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if (name[0] == '\0')
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name = "stdout";
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cpp_notice (pfile, "%s: %s", name, xstrerror (errno));
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}
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