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1 | /* | |
2 | ** Splint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2002 University of Virginia, | |
4 | ** Massachusetts Institute of Technology | |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
20 | ** For information on splint: info@splint.org | |
21 | ** To report a bug: splint-bug@splint.org | |
22 | ** For more information: http://www.splint.org | |
23 | */ | |
24 | /* | |
25 | ** cpperror.c | |
26 | */ | |
27 | /* Default error handlers for CPP Library. | |
28 | Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc. | |
29 | Written by Per Bothner, 1994. | |
30 | Based on CCCP program by by Paul Rubin, June 1986 | |
31 | Adapted to ANSI C, Richard Stallman, Jan 1987 | |
32 | ||
33 | This program is free software; you can redistribute it and/or modify it | |
34 | under the terms of the GNU General Public License as published by the | |
35 | Free Software Foundation; either version 2, or (at your option) any | |
36 | later version. | |
37 | ||
38 | This program is distributed in the hope that it will be useful, | |
39 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
40 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
41 | GNU General Public License for more details. | |
42 | ||
43 | You should have received a copy of the GNU General Public License | |
44 | along with this program; if not, write to the Free Software | |
45 | Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
46 | ||
47 | In other words, you are welcome to use, share and improve this program. | |
48 | You are forbidden to forbid anyone else to use, share and improve | |
49 | what you give them. Help stamp out software-hoarding! */ | |
50 | ||
51 | /*@-macroconstdecl@*/ | |
52 | /*@-macrofcndecl@*/ | |
53 | /*@-evalorderuncon@*/ | |
54 | /*@+ptrnegate@*/ | |
55 | /*@-memchecks@*/ | |
56 | /*@+charintliteral@*/ | |
57 | /*@-infloopsuncon@*/ | |
58 | /*@-loopswitchbreak@*/ | |
59 | /*@-switchloopbreak@*/ | |
60 | /*@-whileblock@*/ | |
61 | /*@-forblock@*/ | |
62 | /*@-elseifcomplete@*/ | |
63 | /*@-abstract@*/ | |
64 | /*@-usedef@*/ | |
65 | /*@-retvalint@*/ | |
66 | /*@-macroparams@*/ | |
67 | /*@-readonlytrans@*/ | |
68 | /*@-boolops@*/ | |
69 | /*@-sizeoftype@*/ | |
70 | /*@-predboolint@*/ | |
71 | /*@-predboolptr@*/ | |
72 | /*@+boolint@*/ | |
73 | /*@+charint@*/ | |
74 | /*@+ignorequals@*/ | |
75 | /*@+ignoresigns@*/ | |
76 | /*@+matchanyintegral@*/ | |
77 | /*@-onlyunqglobaltrans@*/ | |
78 | /*@-macroconstdecl@*/ | |
79 | ||
80 | # include <stdlib.h> | |
81 | # include <errno.h> | |
82 | # include <stdio.h> | |
83 | ||
84 | # define FATAL_EXIT_CODE EXIT_FAILURE | |
85 | ||
86 | # include "splintMacros.nf" | |
87 | # include "llbasic.h" | |
88 | # include "cpplib.h" | |
89 | # include "cpperror.h" | |
90 | ||
91 | static void cppReader_printFileAndLine (cppReader *p_pfile); | |
92 | static void cppReader_warningWithLine (cppReader *p_pfile, | |
93 | int p_line, int p_column, | |
94 | /*@only@*/ cstring p_msg); | |
95 | ||
96 | /* Print the file names and line numbers of the #include | |
97 | commands which led to the current file. */ | |
98 | ||
99 | void cppReader_printContainingFiles (cppReader *pfile) | |
100 | { | |
101 | cppBuffer *ip; | |
102 | int first = 1; | |
103 | ||
104 | if (pfile == NULL) { | |
105 | /* Error processing command line. */ | |
106 | return; | |
107 | } | |
108 | ||
109 | /* If stack of files hasn't changed since we last printed | |
110 | this info, don't repeat it. */ | |
111 | if (pfile->input_stack_listing_current) | |
112 | { | |
113 | return; | |
114 | } | |
115 | ||
116 | ip = cppReader_fileBuffer (pfile); | |
117 | ||
118 | /* Give up if we don't find a source file. */ | |
119 | if (ip == NULL) | |
120 | { | |
121 | return; | |
122 | } | |
123 | ||
124 | /* Find the other, outer source files. */ | |
125 | while ((ip = cppBuffer_prevBuffer (ip)), | |
126 | ip != cppReader_nullBuffer (pfile)) | |
127 | { | |
128 | int line, col; | |
129 | cstring temps; | |
130 | ||
131 | cppBuffer_lineAndColumn (ip, &line, &col); | |
132 | if (ip->fname != NULL) | |
133 | { | |
134 | if (first) | |
135 | { | |
136 | first = 0; | |
137 | fprintf (g_msgstream, " In file included"); | |
138 | } | |
139 | else | |
140 | fprintf (g_msgstream, ",\n "); | |
141 | } | |
142 | ||
143 | fprintf (g_msgstream, " from %s", | |
144 | cstring_toCharsSafe (temps = fileloc_unparseRaw (ip->nominal_fname, line))); | |
145 | ||
146 | cstring_free (temps); | |
147 | } | |
148 | ||
149 | if (!first) | |
150 | { | |
151 | fprintf (g_msgstream, "\n"); | |
152 | } | |
153 | ||
154 | /* Record we have printed the status as of this time. */ | |
155 | pfile->input_stack_listing_current = 1; | |
156 | } | |
157 | ||
158 | static void | |
159 | cppReader_fileLineForMessage (cstring filename, long line, long column) | |
160 | { | |
161 | if (column > 0) | |
162 | { | |
163 | cstring temps; | |
164 | ||
165 | if (filename != NULL) | |
166 | { | |
167 | fprintf (stderr, "%s: ", | |
168 | cstring_toCharsSafe (temps = fileloc_unparseRawCol (filename, (int) line, (int) column))); | |
169 | } | |
170 | else | |
171 | { | |
172 | fprintf (stderr, "%s: ", | |
173 | cstring_toCharsSafe (temps = fileloc_unparseRawCol (cstring_makeLiteralTemp ("<no file>"), | |
174 | (int) line, (int) column))); | |
175 | } | |
176 | ||
177 | cstring_free (temps); | |
178 | } | |
179 | else | |
180 | { | |
181 | cstring temps; | |
182 | ||
183 | if (filename != NULL) | |
184 | { | |
185 | fprintf (stderr, "%s: ", | |
186 | cstring_toCharsSafe (temps = fileloc_unparseRaw (filename, (int) line))); | |
187 | ||
188 | } | |
189 | else | |
190 | { | |
191 | fprintf (stderr, "%s: ", | |
192 | cstring_toCharsSafe (temps = fileloc_unparseRaw (cstring_makeLiteralTemp ("<no file>"), | |
193 | (int) line))); | |
194 | } | |
195 | ||
196 | cstring_free (temps); | |
197 | } | |
198 | } | |
199 | ||
200 | /* IS_ERROR is 2 for "fatal" error, 1 for error, 0 for warning */ | |
201 | ||
202 | static void | |
203 | cppReader_message (cppReader *pfile, int is_error, /*@only@*/ cstring msg) | |
204 | { | |
205 | if (!is_error) | |
206 | { | |
207 | /* fprintf (stderr, "warning: "); */ | |
208 | } | |
209 | else if (is_error == 2) | |
210 | { | |
211 | pfile->errors = cppReader_fatalErrorLimit; | |
212 | } | |
213 | else if (pfile->errors < cppReader_fatalErrorLimit) | |
214 | { | |
215 | pfile->errors++; | |
216 | } | |
217 | else | |
218 | { | |
219 | ; | |
220 | } | |
221 | ||
222 | fprintf (stderr, "%s", cstring_toCharsSafe (msg)); | |
223 | fprintf (stderr, "\n"); | |
224 | } | |
225 | ||
226 | /* Same as cppReader_error, except we consider the error to be "fatal", | |
227 | such as inconsistent options. I.e. there is little point in continuing. | |
228 | (We do not exit, to support use of cpplib as a library. | |
229 | Instead, it is the caller's responsibility to check | |
230 | cpplib_fatalErrors. */ | |
231 | ||
232 | void | |
233 | cppReader_fatalError (cppReader *pfile, /*@only@*/ cstring str) | |
234 | { | |
235 | fprintf (stderr, "preprocessor: "); | |
236 | cppReader_message (pfile, 2, str); | |
237 | } | |
238 | ||
239 | void | |
240 | cppReader_pfatalWithName (cppReader *pfile, cstring name) | |
241 | { | |
242 | cppReader_perrorWithName (pfile, name); | |
243 | exit (FATAL_EXIT_CODE); | |
244 | } | |
245 | ||
246 | /*@only@*/ fileloc | |
247 | cppReader_getLoc (cppReader *pfile) | |
248 | { | |
249 | cppBuffer *ip = cppReader_fileBuffer (pfile); | |
250 | ||
251 | if (ip != NULL) | |
252 | { | |
253 | int line, col; | |
254 | cstring fname = ip->nominal_fname; | |
255 | fileId fid = fileTable_lookup (context_fileTable (), fname); | |
256 | ||
257 | llassert (fileId_isValid (fid)); | |
258 | ||
259 | cppBuffer_lineAndColumn (ip, &line, &col); | |
260 | ||
261 | return fileloc_create (fid, line, col); | |
262 | } | |
263 | else | |
264 | { | |
265 | return fileloc_createBuiltin (); | |
266 | } | |
267 | } | |
268 | ||
269 | void | |
270 | cppReader_printFileAndLine (cppReader *pfile) | |
271 | { | |
272 | cppBuffer *ip = cppReader_fileBuffer (pfile); | |
273 | ||
274 | if (ip != NULL) | |
275 | { | |
276 | int line, col; | |
277 | ||
278 | cppBuffer_lineAndColumn (ip, &line, &col); | |
279 | cppReader_fileLineForMessage (ip->nominal_fname, | |
280 | line, pfile->show_column ? col : -1); | |
281 | } | |
282 | else | |
283 | { | |
284 | fprintf (stderr, "Command Line: "); | |
285 | } | |
286 | } | |
287 | ||
288 | void | |
289 | cppReader_errorLit (cppReader *pfile, /*@observer@*/ cstring msg) | |
290 | { | |
291 | cppReader_error (pfile, cstring_copy (msg)); | |
292 | } | |
293 | ||
294 | void | |
295 | cppReader_error (cppReader *pfile, /*@only@*/ cstring msg) | |
296 | { | |
297 | prepareMessage (); | |
298 | cppReader_printContainingFiles (pfile); | |
299 | cppReader_printFileAndLine (pfile); | |
300 | cppReader_message (pfile, 1, msg); | |
301 | closeMessage (); | |
302 | } | |
303 | ||
304 | /* Print error message but don't count it. */ | |
305 | ||
306 | void | |
307 | cppReader_warningLit (cppReader *pfile, cstring msg) | |
308 | { | |
309 | cppReader_warning (pfile, cstring_copy (msg)); | |
310 | } | |
311 | ||
312 | void | |
313 | cppReader_warning (cppReader *pfile, /*@only@*/ cstring msg) | |
314 | { | |
315 | if (CPPOPTIONS (pfile)->warnings_are_errors) | |
316 | pfile->errors++; | |
317 | ||
318 | prepareMessage (); | |
319 | cppReader_printContainingFiles (pfile); | |
320 | cppReader_printFileAndLine (pfile); | |
321 | cppReader_message (pfile, 0, msg); | |
322 | closeMessage (); | |
323 | } | |
324 | ||
325 | /* Print an error message and maybe count it. */ | |
326 | ||
327 | extern void | |
328 | cppReader_pedwarnLit (cppReader *pfile, /*@observer@*/ cstring msg) | |
329 | { | |
330 | cppReader_pedwarn (pfile, cstring_copy (msg)); | |
331 | } | |
332 | ||
333 | extern void | |
334 | cppReader_pedwarn (cppReader *pfile, /*@only@*/ cstring msg) | |
335 | { | |
336 | if (CPPOPTIONS (pfile)->pedantic_errors) | |
337 | { | |
338 | cppReader_error (pfile, msg); | |
339 | } | |
340 | else | |
341 | { | |
342 | cppReader_warning (pfile, msg); | |
343 | } | |
344 | } | |
345 | ||
346 | void | |
347 | cppReader_errorWithLine (cppReader *pfile, long line, long column, | |
348 | /*@only@*/ cstring msg) | |
349 | { | |
350 | cppBuffer *ip = cppReader_fileBuffer (pfile); | |
351 | ||
352 | prepareMessage (); | |
353 | cppReader_printContainingFiles (pfile); | |
354 | ||
355 | if (ip != NULL) | |
356 | cppReader_fileLineForMessage (ip->nominal_fname, line, column); | |
357 | ||
358 | cppReader_message (pfile, 1, msg); | |
359 | closeMessage (); | |
360 | } | |
361 | ||
362 | void | |
363 | cppReader_warningWithLine (cppReader *pfile, | |
364 | int line, int column, | |
365 | /*@only@*/ cstring msg) | |
366 | { | |
367 | cppBuffer *ip; | |
368 | ||
369 | if (CPPOPTIONS (pfile)->warnings_are_errors) | |
370 | pfile->errors++; | |
371 | ||
372 | prepareMessage (); | |
373 | ||
374 | cppReader_printContainingFiles (pfile); | |
375 | ||
376 | ip = cppReader_fileBuffer (pfile); | |
377 | ||
378 | if (ip != NULL) | |
379 | { | |
380 | cppReader_fileLineForMessage (ip->nominal_fname, line, column); | |
381 | } | |
382 | ||
383 | cppReader_message (pfile, 0, msg); | |
384 | closeMessage (); | |
385 | } | |
386 | ||
387 | void | |
388 | cppReader_pedwarnWithLine (cppReader *pfile, int line, int column, | |
389 | /*@only@*/ cstring msg) | |
390 | { | |
391 | if (CPPOPTIONS (pfile)->pedantic_errors) | |
392 | { | |
393 | cppReader_errorWithLine (pfile, column, line, msg); | |
394 | } | |
395 | else | |
396 | { | |
397 | cppReader_warningWithLine (pfile, line, column, msg); | |
398 | } | |
399 | } | |
400 | ||
401 | void cppReader_perrorWithName (cppReader *pfile, cstring name) | |
402 | { | |
403 | cppReader_message (pfile, 1, | |
404 | message ("Preprocessing error for %s: %s", | |
405 | name, lldecodeerror (errno))); | |
406 | } | |
407 | ||
408 | ||
409 | ||
410 | ||
411 | ||
412 | ||
413 | ||
414 |