Daily bump.
[official-gcc.git] / libcpp / errors.c
blobf34334a63b5cff3515cecccf07ed8ef4307ff7d0
1 /* Default error handlers for CPP Library.
2 Copyright (C) 1986-2021 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
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 3, or (at your option) any
10 later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>.
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! */
25 #include "config.h"
26 #include "system.h"
27 #include "cpplib.h"
28 #include "internal.h"
30 /* Get a location_t for the current location in PFILE,
31 generally that of the previously lexed token. */
33 location_t
34 cpp_diagnostic_get_current_location (cpp_reader *pfile)
36 if (CPP_OPTION (pfile, traditional))
38 if (pfile->state.in_directive)
39 return pfile->directive_line;
40 else
41 return pfile->line_table->highest_line;
43 /* We don't want to refer to a token before the beginning of the
44 current run -- that is invalid. */
45 else if (pfile->cur_token == pfile->cur_run->base)
47 return 0;
49 else
51 return pfile->cur_token[-1].src_loc;
55 /* Print a diagnostic at the given location. */
57 ATTRIBUTE_FPTR_PRINTF(5,0)
58 static bool
59 cpp_diagnostic_at (cpp_reader * pfile, enum cpp_diagnostic_level level,
60 enum cpp_warning_reason reason, rich_location *richloc,
61 const char *msgid, va_list *ap)
63 bool ret;
65 if (!pfile->cb.diagnostic)
66 abort ();
67 ret = pfile->cb.diagnostic (pfile, level, reason, richloc, _(msgid), ap);
69 return ret;
72 /* Print a diagnostic at the location of the previously lexed token. */
74 ATTRIBUTE_FPTR_PRINTF(4,0)
75 static bool
76 cpp_diagnostic (cpp_reader * pfile, enum cpp_diagnostic_level level,
77 enum cpp_warning_reason reason,
78 const char *msgid, va_list *ap)
80 location_t src_loc = cpp_diagnostic_get_current_location (pfile);
81 rich_location richloc (pfile->line_table, src_loc);
82 return cpp_diagnostic_at (pfile, level, reason, &richloc, msgid, ap);
85 /* Print a warning or error, depending on the value of LEVEL. */
87 bool
88 cpp_error (cpp_reader * pfile, enum cpp_diagnostic_level level,
89 const char *msgid, ...)
91 va_list ap;
92 bool ret;
94 va_start (ap, msgid);
96 ret = cpp_diagnostic (pfile, level, CPP_W_NONE, msgid, &ap);
98 va_end (ap);
99 return ret;
102 /* Print a warning. The warning reason may be given in REASON. */
104 bool
105 cpp_warning (cpp_reader * pfile, enum cpp_warning_reason reason,
106 const char *msgid, ...)
108 va_list ap;
109 bool ret;
111 va_start (ap, msgid);
113 ret = cpp_diagnostic (pfile, CPP_DL_WARNING, reason, msgid, &ap);
115 va_end (ap);
116 return ret;
119 /* Print a pedantic warning. The warning reason may be given in REASON. */
121 bool
122 cpp_pedwarning (cpp_reader * pfile, enum cpp_warning_reason reason,
123 const char *msgid, ...)
125 va_list ap;
126 bool ret;
128 va_start (ap, msgid);
130 ret = cpp_diagnostic (pfile, CPP_DL_PEDWARN, reason, msgid, &ap);
132 va_end (ap);
133 return ret;
136 /* Print a warning, including system headers. The warning reason may be
137 given in REASON. */
139 bool
140 cpp_warning_syshdr (cpp_reader * pfile, enum cpp_warning_reason reason,
141 const char *msgid, ...)
143 va_list ap;
144 bool ret;
146 va_start (ap, msgid);
148 ret = cpp_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, reason, msgid, &ap);
150 va_end (ap);
151 return ret;
154 /* As cpp_warning above, but use RICHLOC as the location of the diagnostic. */
156 bool cpp_warning_at (cpp_reader *pfile, enum cpp_warning_reason reason,
157 rich_location *richloc, const char *msgid, ...)
159 va_list ap;
160 bool ret;
162 va_start (ap, msgid);
164 ret = cpp_diagnostic_at (pfile, CPP_DL_WARNING, reason, richloc,
165 msgid, &ap);
167 va_end (ap);
168 return ret;
172 /* As cpp_pedwarning above, but use RICHLOC as the location of the
173 diagnostic. */
175 bool
176 cpp_pedwarning_at (cpp_reader * pfile, enum cpp_warning_reason reason,
177 rich_location *richloc, const char *msgid, ...)
179 va_list ap;
180 bool ret;
182 va_start (ap, msgid);
184 ret = cpp_diagnostic_at (pfile, CPP_DL_PEDWARN, reason, richloc,
185 msgid, &ap);
187 va_end (ap);
188 return ret;
191 /* Print a diagnostic at a specific location. */
193 ATTRIBUTE_FPTR_PRINTF(6,0)
194 static bool
195 cpp_diagnostic_with_line (cpp_reader * pfile, enum cpp_diagnostic_level level,
196 enum cpp_warning_reason reason,
197 location_t src_loc, unsigned int column,
198 const char *msgid, va_list *ap)
200 bool ret;
202 if (!pfile->cb.diagnostic)
203 abort ();
204 rich_location richloc (pfile->line_table, src_loc);
205 if (column)
206 richloc.override_column (column);
207 ret = pfile->cb.diagnostic (pfile, level, reason, &richloc, _(msgid), ap);
209 return ret;
212 /* Print a warning or error, depending on the value of LEVEL. */
214 bool
215 cpp_error_with_line (cpp_reader *pfile, enum cpp_diagnostic_level level,
216 location_t src_loc, unsigned int column,
217 const char *msgid, ...)
219 va_list ap;
220 bool ret;
222 va_start (ap, msgid);
224 ret = cpp_diagnostic_with_line (pfile, level, CPP_W_NONE, src_loc,
225 column, msgid, &ap);
227 va_end (ap);
228 return ret;
231 /* Print a warning. The warning reason may be given in REASON. */
233 bool
234 cpp_warning_with_line (cpp_reader *pfile, enum cpp_warning_reason reason,
235 location_t src_loc, unsigned int column,
236 const char *msgid, ...)
238 va_list ap;
239 bool ret;
241 va_start (ap, msgid);
243 ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING, reason, src_loc,
244 column, msgid, &ap);
246 va_end (ap);
247 return ret;
250 /* Print a pedantic warning. The warning reason may be given in REASON. */
252 bool
253 cpp_pedwarning_with_line (cpp_reader *pfile, enum cpp_warning_reason reason,
254 location_t src_loc, unsigned int column,
255 const char *msgid, ...)
257 va_list ap;
258 bool ret;
260 va_start (ap, msgid);
262 ret = cpp_diagnostic_with_line (pfile, CPP_DL_PEDWARN, reason, src_loc,
263 column, msgid, &ap);
265 va_end (ap);
266 return ret;
269 /* Print a warning, including system headers. The warning reason may be
270 given in REASON. */
272 bool
273 cpp_warning_with_line_syshdr (cpp_reader *pfile, enum cpp_warning_reason reason,
274 location_t src_loc, unsigned int column,
275 const char *msgid, ...)
277 va_list ap;
278 bool ret;
280 va_start (ap, msgid);
282 ret = cpp_diagnostic_with_line (pfile, CPP_DL_WARNING_SYSHDR, reason, src_loc,
283 column, msgid, &ap);
285 va_end (ap);
286 return ret;
289 /* As cpp_error, but use SRC_LOC as the location of the error, without
290 a column override. */
292 bool
293 cpp_error_at (cpp_reader * pfile, enum cpp_diagnostic_level level,
294 location_t src_loc, const char *msgid, ...)
296 va_list ap;
297 bool ret;
299 va_start (ap, msgid);
301 rich_location richloc (pfile->line_table, src_loc);
302 ret = cpp_diagnostic_at (pfile, level, CPP_W_NONE, &richloc,
303 msgid, &ap);
305 va_end (ap);
306 return ret;
309 /* As cpp_error, but use RICHLOC as the location of the error, without
310 a column override. */
312 bool
313 cpp_error_at (cpp_reader * pfile, enum cpp_diagnostic_level level,
314 rich_location *richloc, const char *msgid, ...)
316 va_list ap;
317 bool ret;
319 va_start (ap, msgid);
321 ret = cpp_diagnostic_at (pfile, level, CPP_W_NONE, richloc,
322 msgid, &ap);
324 va_end (ap);
325 return ret;
328 /* Print a warning or error, depending on the value of LEVEL. Include
329 information from errno. */
331 bool
332 cpp_errno (cpp_reader *pfile, enum cpp_diagnostic_level level,
333 const char *msgid)
335 return cpp_error (pfile, level, "%s: %s", _(msgid), xstrerror (errno));
338 /* Print a warning or error, depending on the value of LEVEL. Include
339 information from errno. Unlike cpp_errno, the argument is a filename
340 that is not localized, but "" is replaced with localized "stdout". */
342 bool
343 cpp_errno_filename (cpp_reader *pfile, enum cpp_diagnostic_level level,
344 const char *filename,
345 location_t loc)
347 if (filename[0] == '\0')
348 filename = _("stdout");
350 return cpp_error_at (pfile, level, loc, "%s: %s", filename,
351 xstrerror (errno));