Line data Source code
1 : /* Mainly the interface between cpplib and the C front ends.
2 : Copyright (C) 1987-2026 Free Software Foundation, Inc.
3 :
4 : This file is part of GCC.
5 :
6 : GCC is free software; you can redistribute it and/or modify it under
7 : the terms of the GNU General Public License as published by the Free
8 : Software Foundation; either version 3, or (at your option) any later
9 : version.
10 :
11 : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 : WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 : FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 : for more details.
15 :
16 : You should have received a copy of the GNU General Public License
17 : along with GCC; see the file COPYING3. If not see
18 : <http://www.gnu.org/licenses/>. */
19 :
20 : #include "config.h"
21 : #include "system.h"
22 : #include "coretypes.h"
23 : #include "target.h"
24 : #include "c-common.h"
25 : #include "timevar.h"
26 : #include "stringpool.h"
27 : #include "stor-layout.h"
28 : #include "c-pragma.h"
29 : #include "debug.h"
30 : #include "flags.h"
31 : #include "file-prefix-map.h" /* remap_macro_filename() */
32 : #include "langhooks.h"
33 : #include "attribs.h"
34 : #include "rich-location.h"
35 :
36 : /* We may keep statistics about how long which files took to compile. */
37 : static int header_time, body_time;
38 : static splay_tree file_info_tree;
39 :
40 : int pending_lang_change; /* If we need to switch languages - C++ only */
41 : int c_header_level; /* depth in C headers - C++ only */
42 :
43 : static tree interpret_integer (const cpp_token *, unsigned int,
44 : enum overflow_type *);
45 : static tree interpret_float (const cpp_token *, unsigned int, const char *,
46 : enum overflow_type *);
47 : static tree interpret_fixed (const cpp_token *, unsigned int);
48 : static enum integer_type_kind narrowest_unsigned_type
49 : (const widest_int &, unsigned int);
50 : static enum integer_type_kind narrowest_signed_type
51 : (const widest_int &, unsigned int);
52 : static enum cpp_ttype lex_string (const cpp_token *, tree *, bool, bool);
53 : static tree lex_charconst (const cpp_token *);
54 : static void update_header_times (const char *);
55 : static int dump_one_header (splay_tree_node, void *);
56 : static void cb_line_change (cpp_reader *, const cpp_token *, int);
57 : static void cb_ident (cpp_reader *, location_t, const cpp_string *);
58 : static void cb_def_pragma (cpp_reader *, location_t);
59 : static void cb_define (cpp_reader *, location_t, cpp_hashnode *);
60 : static void cb_undef (cpp_reader *, location_t, cpp_hashnode *);
61 :
62 : void
63 204999 : init_c_lex (void)
64 : {
65 204999 : struct c_fileinfo *toplevel;
66 :
67 : /* The get_fileinfo data structure must be initialized before
68 : cpp_read_main_file is called. */
69 204999 : toplevel = get_fileinfo ("<top level>");
70 204999 : if (flag_detailed_statistics)
71 : {
72 0 : header_time = 0;
73 0 : body_time = get_run_time ();
74 0 : toplevel->time = body_time;
75 : }
76 :
77 204999 : struct cpp_callbacks *cb = cpp_get_callbacks (parse_in);
78 :
79 204999 : cb->line_change = cb_line_change;
80 204999 : cb->ident = cb_ident;
81 204999 : cb->def_pragma = cb_def_pragma;
82 204999 : cb->valid_pch = c_common_valid_pch;
83 204999 : cb->read_pch = c_common_read_pch;
84 204999 : cb->has_attribute = c_common_has_attribute;
85 204999 : cb->has_builtin = c_common_has_builtin;
86 204999 : cb->has_feature = c_common_has_feature;
87 204999 : cb->get_source_date_epoch = cb_get_source_date_epoch;
88 204999 : cb->get_suggestion = cb_get_suggestion;
89 204999 : cb->remap_filename = remap_macro_filename;
90 :
91 : /* Set the debug callbacks if we can use them. */
92 204999 : if ((debug_info_level == DINFO_LEVEL_VERBOSE
93 522 : && dwarf_debuginfo_p ())
94 204999 : || flag_dump_go_spec != NULL)
95 : {
96 526 : cb->define = cb_define;
97 526 : cb->undef = cb_undef;
98 : }
99 204999 : }
100 :
101 : struct c_fileinfo *
102 334279557 : get_fileinfo (const char *name)
103 : {
104 334279557 : splay_tree_node n;
105 334279557 : struct c_fileinfo *fi;
106 :
107 334279557 : if (!file_info_tree)
108 206393 : file_info_tree = splay_tree_new (splay_tree_compare_strings,
109 : 0,
110 : splay_tree_delete_pointers);
111 :
112 334279557 : n = splay_tree_lookup (file_info_tree, (splay_tree_key) name);
113 334279557 : if (n)
114 330280286 : return (struct c_fileinfo *) n->value;
115 :
116 3999271 : fi = XNEW (struct c_fileinfo);
117 3999271 : fi->time = 0;
118 3999271 : fi->interface_only = 0;
119 3999271 : fi->interface_unknown = 1;
120 3999271 : splay_tree_insert (file_info_tree, (splay_tree_key) name,
121 : (splay_tree_value) fi);
122 3999271 : return fi;
123 : }
124 :
125 : static void
126 20968135 : update_header_times (const char *name)
127 : {
128 : /* Changing files again. This means currently collected time
129 : is charged against header time, and body time starts back at 0. */
130 20968135 : if (flag_detailed_statistics)
131 : {
132 0 : int this_time = get_run_time ();
133 0 : struct c_fileinfo *file = get_fileinfo (name);
134 0 : header_time += this_time - body_time;
135 0 : file->time += this_time - body_time;
136 0 : body_time = this_time;
137 : }
138 20968135 : }
139 :
140 : static int
141 0 : dump_one_header (splay_tree_node n, void * ARG_UNUSED (dummy))
142 : {
143 0 : print_time ((const char *) n->key,
144 0 : ((struct c_fileinfo *) n->value)->time);
145 0 : return 0;
146 : }
147 :
148 : void
149 0 : dump_time_statistics (void)
150 : {
151 0 : struct c_fileinfo *file = get_fileinfo (LOCATION_FILE (input_location));
152 0 : int this_time = get_run_time ();
153 0 : file->time += this_time - body_time;
154 :
155 0 : fprintf (stderr, "\n******\n");
156 0 : print_time ("header files (total)", header_time);
157 0 : print_time ("main file (total)", this_time - body_time);
158 0 : fprintf (stderr, "ratio = %g : 1\n",
159 0 : (double) header_time / (double) (this_time - body_time));
160 0 : fprintf (stderr, "\n******\n");
161 :
162 0 : splay_tree_foreach (file_info_tree, dump_one_header, 0);
163 0 : }
164 :
165 : static void
166 22 : cb_ident (cpp_reader * ARG_UNUSED (pfile),
167 : location_t ARG_UNUSED (line),
168 : const cpp_string * ARG_UNUSED (str))
169 : {
170 22 : if (!flag_no_ident)
171 : {
172 : /* Convert escapes in the string. */
173 22 : cpp_string cstr = { 0, 0 };
174 22 : if (cpp_interpret_string (pfile, str, 1, &cstr, CPP_STRING))
175 : {
176 22 : targetm.asm_out.output_ident ((const char *) cstr.text);
177 22 : free (const_cast<unsigned char *> (cstr.text));
178 : }
179 : }
180 22 : }
181 :
182 : /* Called at the start of every non-empty line. TOKEN is the first
183 : lexed token on the line. Used for diagnostic line numbers. */
184 : static void
185 1739162480 : cb_line_change (cpp_reader * ARG_UNUSED (pfile), const cpp_token *token,
186 : int parsing_args)
187 : {
188 1739162480 : if (token->type != CPP_EOF && !parsing_args)
189 1732343023 : input_location = token->src_loc;
190 1739162480 : }
191 :
192 : void
193 21172708 : fe_file_change (const line_map_ordinary *new_map)
194 : {
195 21172708 : if (new_map == NULL)
196 : return;
197 :
198 20968135 : if (new_map->reason == LC_ENTER)
199 : {
200 : /* Don't stack the main buffer on the input stack;
201 : we already did in compile_file. */
202 10247975 : if (!MAIN_FILE_P (new_map))
203 : {
204 10042976 : location_t included_at = linemap_included_from (new_map);
205 10042976 : int line = 0;
206 10042976 : if (included_at > BUILTINS_LOCATION)
207 10042976 : line = SOURCE_LINE (new_map - 1, included_at);
208 :
209 10042976 : input_location = new_map->start_location;
210 10042976 : (*debug_hooks->start_source_file) (line, LINEMAP_FILE (new_map));
211 : #ifdef SYSTEM_IMPLICIT_EXTERN_C
212 : if (c_header_level)
213 : ++c_header_level;
214 : else if (LINEMAP_SYSP (new_map) == 2)
215 : {
216 : c_header_level = 1;
217 : ++pending_lang_change;
218 : }
219 : #endif
220 : }
221 : }
222 10720160 : else if (new_map->reason == LC_LEAVE)
223 : {
224 : #ifdef SYSTEM_IMPLICIT_EXTERN_C
225 : if (c_header_level && --c_header_level == 0)
226 : {
227 : if (LINEMAP_SYSP (new_map) == 2)
228 : warning (0, "badly nested C headers from preprocessor");
229 : --pending_lang_change;
230 : }
231 : #endif
232 10042973 : input_location = new_map->start_location;
233 :
234 10042973 : (*debug_hooks->end_source_file) (LINEMAP_LINE (new_map));
235 : }
236 :
237 20968135 : update_header_times (LINEMAP_FILE (new_map));
238 20968135 : input_location = new_map->start_location;
239 : }
240 :
241 : static void
242 1685 : cb_def_pragma (cpp_reader *pfile, location_t loc)
243 : {
244 : /* Issue a warning message if we have been asked to do so. Ignore
245 : unknown pragmas in system headers unless an explicit
246 : -Wunknown-pragmas has been given. */
247 1685 : if (warn_unknown_pragmas > in_system_header_at (input_location))
248 : {
249 65 : const unsigned char *space, *name;
250 65 : const cpp_token *s;
251 :
252 : /* If we are processing a _Pragma, LOC is not a valid location, but libcpp
253 : will provide a good location via this function instead. */
254 65 : location_t fe_loc = cpp_get_diagnostic_override_loc (pfile);
255 65 : if (fe_loc == UNKNOWN_LOCATION)
256 42 : fe_loc = loc;
257 :
258 65 : space = name = (const unsigned char *) "";
259 :
260 : /* N.B. It's fine to call cpp_get_token () directly here (rather than our
261 : local wrapper get_token ()), because this callback is not used with
262 : flag_preprocess_only==true. */
263 65 : s = cpp_get_token (pfile);
264 65 : if (s->type != CPP_EOF)
265 : {
266 64 : space = cpp_token_as_text (pfile, s);
267 64 : s = cpp_get_token (pfile);
268 64 : if (s->type == CPP_NAME)
269 37 : name = cpp_token_as_text (pfile, s);
270 : }
271 :
272 65 : warning_at (fe_loc, OPT_Wunknown_pragmas, "ignoring %<#pragma %s %s%>",
273 : space, name);
274 : }
275 1685 : }
276 :
277 : /* #define callback for DWARF and DWARF2 debug info. */
278 : static void
279 258567 : cb_define (cpp_reader *pfile, location_t loc, cpp_hashnode *node)
280 : {
281 258567 : const struct line_map *map = linemap_lookup (line_table, loc);
282 258567 : (*debug_hooks->define) (SOURCE_LINE (linemap_check_ordinary (map), loc),
283 258567 : (const char *) cpp_macro_definition (pfile, node));
284 258567 : }
285 :
286 : /* #undef callback for DWARF and DWARF2 debug info. */
287 : static void
288 1539 : cb_undef (cpp_reader *pfile, location_t loc, cpp_hashnode *node)
289 : {
290 1539 : if (lang_hooks.preprocess_undef)
291 0 : lang_hooks.preprocess_undef (pfile, loc, node);
292 :
293 1539 : const struct line_map *map = linemap_lookup (line_table, loc);
294 1539 : (*debug_hooks->undef) (SOURCE_LINE (linemap_check_ordinary (map), loc),
295 1539 : (const char *) NODE_NAME (node));
296 1539 : }
297 :
298 : /* Wrapper around cpp_get_token_with_location to stream the token to the
299 : preprocessor so it can output it. This is necessary with
300 : flag_preprocess_only if we are obtaining tokens here instead of from the loop
301 : in c-ppoutput.cc, such as while processing a #pragma. */
302 :
303 : static const cpp_token *
304 13281248415 : get_token (cpp_reader *pfile, location_t *loc = nullptr)
305 : {
306 13281248415 : if (flag_preprocess_only)
307 : {
308 89656 : location_t x;
309 89656 : if (!loc)
310 0 : loc = &x;
311 89656 : const auto tok = cpp_get_token_with_location (pfile, loc);
312 89656 : c_pp_stream_token (pfile, tok, *loc);
313 89656 : return tok;
314 : }
315 : else
316 13281158759 : return cpp_get_token_with_location (pfile, loc);
317 : }
318 :
319 : /* Wrapper around cpp_get_token to skip CPP_PADDING tokens
320 : and not consume CPP_EOF. This does not perform the optional
321 : streaming in preprocess_only mode, so is suitable to be used
322 : when processing builtin expansions such as c_common_has_attribute. */
323 :
324 : static const cpp_token *
325 26852454 : get_token_no_padding (cpp_reader *pfile)
326 : {
327 26852750 : for (;;)
328 : {
329 26852750 : const cpp_token *ret = cpp_peek_token (pfile, 0);
330 26852750 : if (ret->type == CPP_EOF)
331 : return ret;
332 26852730 : ret = cpp_get_token (pfile);
333 26852730 : if (ret->type != CPP_PADDING)
334 : return ret;
335 : }
336 : }
337 :
338 : /* Callback for has_attribute. */
339 : int
340 824811 : c_common_has_attribute (cpp_reader *pfile, bool std_syntax)
341 : {
342 824811 : int result = 0;
343 824811 : tree attr_name = NULL_TREE;
344 824811 : const cpp_token *token;
345 :
346 824811 : token = get_token_no_padding (pfile);
347 824811 : if (token->type != CPP_OPEN_PAREN)
348 : {
349 2 : cpp_error (pfile, CPP_DL_ERROR,
350 : "missing %<(%> after %<__has_attribute%>");
351 2 : return 0;
352 : }
353 824809 : token = get_token_no_padding (pfile);
354 824809 : if (token->type == CPP_NAME)
355 : {
356 824805 : attr_name = get_identifier ((const char *)
357 : cpp_token_as_text (pfile, token));
358 824805 : attr_name = canonicalize_attr_name (attr_name);
359 824805 : bool have_scope = false;
360 824805 : int idx = 0;
361 824865 : const cpp_token *nxt_token;
362 824865 : do
363 824865 : nxt_token = cpp_peek_token (pfile, idx++);
364 824865 : while (nxt_token->type == CPP_PADDING);
365 824805 : if (!c_dialect_cxx ()
366 401097 : && nxt_token->type == CPP_COLON
367 2 : && (nxt_token->flags & COLON_SCOPE) != 0)
368 : {
369 : const cpp_token *prev_token = nxt_token;
370 2 : do
371 2 : nxt_token = cpp_peek_token (pfile, idx++);
372 2 : while (nxt_token->type == CPP_PADDING);
373 2 : if (nxt_token->type == CPP_COLON)
374 : {
375 : /* __has_attribute (vendor::attr) in -std=c17 etc. modes.
376 : :: isn't CPP_SCOPE but 2 CPP_COLON tokens, where the
377 : first one should have COLON_SCOPE flag to distinguish
378 : it from : :. */
379 2 : have_scope = true;
380 2 : get_token_no_padding (pfile); // Eat first colon.
381 : }
382 : else
383 : nxt_token = prev_token;
384 : }
385 824805 : if (nxt_token->type == CPP_SCOPE || have_scope)
386 : {
387 820 : have_scope = true;
388 820 : get_token_no_padding (pfile); // Eat scope.
389 820 : nxt_token = get_token_no_padding (pfile);
390 820 : if (nxt_token->type == CPP_NAME)
391 : {
392 819 : tree attr_ns = attr_name;
393 819 : tree attr_id
394 819 : = get_identifier ((const char *)
395 : cpp_token_as_text (pfile, nxt_token));
396 819 : attr_id = canonicalize_attr_name (attr_id);
397 : /* OpenMP attributes need special handling. */
398 723 : if ((flag_openmp || flag_openmp_simd)
399 192 : && is_attribute_p ("omp", attr_ns)
400 1011 : && (is_attribute_p ("directive", attr_id)
401 144 : || is_attribute_p ("sequence", attr_id)
402 96 : || is_attribute_p ("decl", attr_id)))
403 : result = 1;
404 675 : if (result)
405 : attr_name = NULL_TREE;
406 : /* gnu::trivial_abi is in the attribute table just
407 : to error on it and suggest using [[clang::trivial_abi]]
408 : or __attribute__((trivial_abi)). Don't advertise it. */
409 675 : else if (c_dialect_cxx ()
410 631 : && is_attribute_p ("gnu", attr_ns)
411 732 : && is_attribute_p ("trivial_abi", attr_id))
412 : attr_name = NULL_TREE;
413 : else
414 669 : attr_name = build_tree_list (attr_ns, attr_id);
415 : }
416 : else
417 : {
418 1 : cpp_error (pfile, CPP_DL_ERROR,
419 : "attribute identifier required after scope");
420 1 : attr_name = NULL_TREE;
421 : }
422 : }
423 : else
424 : {
425 : /* Some standard attributes need special handling. */
426 823985 : if (c_dialect_cxx ())
427 : {
428 422969 : if (is_attribute_p ("noreturn", attr_name))
429 : result = 200809;
430 422918 : else if (is_attribute_p ("deprecated", attr_name))
431 : result = 201309;
432 400036 : else if (is_attribute_p ("maybe_unused", attr_name)
433 400036 : || is_attribute_p ("fallthrough", attr_name))
434 : result = 201603;
435 399567 : else if (is_attribute_p ("no_unique_address", attr_name)
436 376767 : || is_attribute_p ("likely", attr_name)
437 776326 : || is_attribute_p ("unlikely", attr_name))
438 : result = 201803;
439 376751 : else if (is_attribute_p ("nodiscard", attr_name))
440 : result = 201907;
441 376740 : else if (is_attribute_p ("assume", attr_name))
442 : result = 202207;
443 365455 : else if (is_attribute_p ("init_priority", attr_name))
444 : {
445 : /* The (non-standard) init_priority attribute is always
446 : included in the attribute table, but we don't want to
447 : advertise the attribute unless the target actually
448 : supports init priorities. */
449 : result = SUPPORTS_INIT_PRIORITY ? 1 : 0;
450 : attr_name = NULL_TREE;
451 : }
452 : }
453 : else
454 : {
455 401016 : if (is_attribute_p ("deprecated", attr_name)
456 375968 : || is_attribute_p ("fallthrough", attr_name)
457 375813 : || is_attribute_p ("maybe_unused", attr_name)
458 375811 : || is_attribute_p ("nodiscard", attr_name)
459 375809 : || is_attribute_p ("noreturn", attr_name)
460 375795 : || is_attribute_p ("_Noreturn", attr_name)
461 375793 : || is_attribute_p ("reproducible", attr_name)
462 776807 : || is_attribute_p ("unsequenced", attr_name))
463 : result = 202311;
464 : }
465 : if (result)
466 : attr_name = NULL_TREE;
467 : }
468 731637 : if (attr_name && (have_scope || !std_syntax))
469 : {
470 731632 : init_attributes ();
471 731632 : const struct attribute_spec *attr = lookup_attribute_spec (attr_name);
472 731632 : if (attr)
473 741421 : result = 1;
474 : }
475 : }
476 : else
477 : {
478 4 : cpp_error (pfile, CPP_DL_ERROR,
479 : "macro %<__has_attribute%> requires an identifier");
480 4 : return 0;
481 : }
482 :
483 824805 : if (get_token_no_padding (pfile)->type != CPP_CLOSE_PAREN)
484 3 : cpp_error (pfile, CPP_DL_ERROR,
485 : "missing %<)%> after %<__has_attribute%>");
486 :
487 : return result;
488 : }
489 :
490 : /* Helper for __has_{builtin,feature,extension}. */
491 :
492 : static const char *
493 8125441 : c_common_lex_availability_macro (cpp_reader *pfile, const char *builtin)
494 : {
495 8125441 : const cpp_token *token = get_token_no_padding (pfile);
496 8125441 : if (token->type != CPP_OPEN_PAREN)
497 : {
498 4 : cpp_error (pfile, CPP_DL_ERROR,
499 : "missing %<(%> after %<__has_%s%>", builtin);
500 4 : return 0;
501 : }
502 :
503 8125437 : const char *name = "";
504 8125437 : token = get_token_no_padding (pfile);
505 8125437 : if (token->type == CPP_NAME)
506 : {
507 8125405 : name = (const char *) cpp_token_as_text (pfile, token);
508 8125405 : token = get_token_no_padding (pfile);
509 8125405 : if (token->type != CPP_CLOSE_PAREN)
510 : {
511 16 : cpp_error (pfile, CPP_DL_ERROR,
512 : "expected %<)%> after %qs", name);
513 16 : name = "";
514 : }
515 : }
516 : else
517 : {
518 32 : cpp_error (pfile, CPP_DL_ERROR,
519 : "macro %<__has_%s%> requires an identifier", builtin);
520 32 : if (token->type == CPP_CLOSE_PAREN)
521 : return 0;
522 : }
523 :
524 : /* Consume tokens up to the closing parenthesis, including any nested
525 : pairs of parentheses, to avoid confusing redundant errors. */
526 8125537 : for (unsigned nparen = 1; ; token = get_token_no_padding (pfile))
527 : {
528 8125537 : if (token->type == CPP_OPEN_PAREN)
529 24 : ++nparen;
530 8125513 : else if (token->type == CPP_CLOSE_PAREN)
531 8125437 : --nparen;
532 76 : else if (token->type == CPP_EOF)
533 : break;
534 8125525 : if (!nparen)
535 : break;
536 : }
537 :
538 : return name;
539 : }
540 :
541 : /* Callback for has_builtin. */
542 :
543 : int
544 7994499 : c_common_has_builtin (cpp_reader *pfile)
545 : {
546 7994499 : const char *name = c_common_lex_availability_macro (pfile, "builtin");
547 7994499 : if (!name)
548 : return 0;
549 :
550 7994491 : return names_builtin_p (name);
551 : }
552 :
553 : /* Callback for has_feature. STRICT_P is true for has_feature and false
554 : for has_extension. */
555 :
556 : int
557 130942 : c_common_has_feature (cpp_reader *pfile, bool strict_p)
558 : {
559 130942 : const char *builtin = strict_p ? "feature" : "extension";
560 130942 : const char *name = c_common_lex_availability_macro (pfile, builtin);
561 130942 : if (!name)
562 : return 0;
563 :
564 : /* If -pedantic-errors is given, __has_extension is equivalent to
565 : __has_feature. */
566 130942 : strict_p |= flag_pedantic_errors;
567 130942 : return has_feature_p (name, strict_p);
568 : }
569 :
570 :
571 : /* Read a token and return its type. Fill *VALUE with its value, if
572 : applicable. Fill *CPP_FLAGS with the token's flags, if it is
573 : non-NULL. */
574 :
575 : enum cpp_ttype
576 12109757506 : c_lex_with_flags (tree *value, location_t *loc, unsigned char *cpp_flags,
577 : int lex_flags)
578 : {
579 12109757506 : const cpp_token *tok;
580 12109757506 : enum cpp_ttype type;
581 12109757506 : unsigned char add_flags = 0;
582 12109757506 : enum overflow_type overflow = OT_NONE;
583 :
584 12109757506 : timevar_push (TV_CPP);
585 13281248229 : retry:
586 13281248229 : tok = get_token (parse_in, loc);
587 13281248037 : type = tok->type;
588 :
589 13281248181 : retry_after_at:
590 13281248181 : switch (type)
591 : {
592 1171490381 : case CPP_PADDING:
593 1171490381 : goto retry;
594 :
595 5544558351 : case CPP_NAME:
596 5544558351 : *value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node.node));
597 5544558351 : break;
598 :
599 201552487 : case CPP_NUMBER:
600 201552487 : {
601 201552487 : const char *suffix = NULL;
602 201552487 : unsigned int flags = cpp_classify_number (parse_in, tok, &suffix, *loc);
603 :
604 201552487 : switch (flags & CPP_N_CATEGORY)
605 : {
606 174 : case CPP_N_INVALID:
607 : /* cpplib has issued an error. */
608 174 : *value = error_mark_node;
609 174 : break;
610 :
611 196529593 : case CPP_N_INTEGER:
612 : /* C++ uses '0' to mark virtual functions as pure.
613 : Set PURE_ZERO to pass this information to the C++ parser. */
614 196529593 : if (tok->val.str.len == 1 && *tok->val.str.text == '0')
615 : add_flags = PURE_ZERO | DECIMAL_INT;
616 157321479 : else if ((flags & CPP_N_INTEGER) && (flags & CPP_N_DECIMAL))
617 : /* -Wxor-used-as-pow is only active for LHS of ^ expressed
618 : as a decimal integer. */
619 196529593 : add_flags = DECIMAL_INT;
620 196529593 : *value = interpret_integer (tok, flags, &overflow);
621 196529593 : break;
622 :
623 5022720 : case CPP_N_FLOATING:
624 5022720 : *value = interpret_float (tok, flags, suffix, &overflow);
625 5022720 : break;
626 :
627 0 : default:
628 0 : gcc_unreachable ();
629 : }
630 :
631 201552487 : if (flags & CPP_N_USERDEF)
632 : {
633 221111 : char *str;
634 221111 : tree literal;
635 221111 : tree suffix_id = get_identifier (suffix);
636 221111 : int len = tok->val.str.len - strlen (suffix);
637 : /* If this is going to be used as a C string to pass to a
638 : raw literal operator, we need to add a trailing NUL. */
639 442222 : tree num_string = build_string (len + 1,
640 221111 : (const char *) tok->val.str.text);
641 221111 : TREE_TYPE (num_string) = char_array_type_node;
642 221111 : num_string = fix_string_type (num_string);
643 221111 : str = const_cast<char *> (TREE_STRING_POINTER (num_string));
644 221111 : str[len] = '\0';
645 221111 : literal = build_userdef_literal (suffix_id, *value, overflow,
646 : num_string);
647 221111 : *value = literal;
648 : }
649 : }
650 201552487 : break;
651 :
652 3 : case CPP_ATSIGN:
653 : /* An @ may give the next token special significance in Objective-C. */
654 3 : if (c_dialect_objc ())
655 : {
656 0 : location_t atloc = *loc;
657 0 : location_t newloc;
658 :
659 0 : retry_at:
660 0 : tok = get_token (parse_in, &newloc);
661 0 : type = tok->type;
662 0 : switch (type)
663 : {
664 0 : case CPP_PADDING:
665 0 : goto retry_at;
666 :
667 0 : case CPP_STRING:
668 0 : case CPP_WSTRING:
669 0 : case CPP_STRING16:
670 0 : case CPP_STRING32:
671 0 : case CPP_UTF8STRING:
672 0 : type = lex_string (tok, value, true, true);
673 0 : break;
674 :
675 0 : case CPP_NAME:
676 0 : *value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node.node));
677 0 : if (OBJC_IS_AT_KEYWORD (C_RID_CODE (*value))
678 : || OBJC_IS_CXX_KEYWORD (C_RID_CODE (*value)))
679 : {
680 0 : type = CPP_AT_NAME;
681 : /* Note the complication: if we found an OBJC_CXX
682 : keyword, for example, 'class', we will be
683 : returning a token of type CPP_AT_NAME and rid
684 : code RID_CLASS (not RID_AT_CLASS). The language
685 : parser needs to convert that to RID_AT_CLASS.
686 : However, we've now spliced the '@' together with the
687 : keyword that follows; Adjust the location so that we
688 : get a source range covering the composite.
689 : */
690 0 : *loc = make_location (atloc, atloc, newloc);
691 0 : break;
692 : }
693 : /* FALLTHROUGH */
694 :
695 0 : default:
696 : /* ... or not. */
697 0 : error_at (atloc, "stray %<@%> in program");
698 0 : *loc = newloc;
699 0 : goto retry_after_at;
700 : }
701 0 : break;
702 : }
703 :
704 : /* FALLTHROUGH */
705 23 : case CPP_HASH:
706 23 : case CPP_PASTE:
707 23 : {
708 23 : unsigned char name[8];
709 :
710 23 : *cpp_spell_token (parse_in, tok, name, true) = 0;
711 :
712 23 : error_at (*loc, "stray %qs in program", name);
713 : }
714 :
715 23 : goto retry;
716 :
717 135 : case CPP_OTHER:
718 135 : {
719 135 : cppchar_t c = tok->val.str.text[0];
720 :
721 135 : if (c == '"' || c == '\'')
722 25 : error_at (*loc, "missing terminating %c character", (int) c);
723 110 : else if (ISGRAPH (c))
724 102 : error_at (*loc, "stray %qc in program", (int) c);
725 : else
726 : {
727 8 : rich_location rich_loc (line_table, *loc);
728 8 : rich_loc.set_escape_on_output (true);
729 8 : error_at (&rich_loc, "stray %<\\%o%> in program", (int) c);
730 8 : }
731 : }
732 135 : goto retry;
733 :
734 110 : case CPP_CHAR_USERDEF:
735 110 : case CPP_WCHAR_USERDEF:
736 110 : case CPP_CHAR16_USERDEF:
737 110 : case CPP_CHAR32_USERDEF:
738 110 : case CPP_UTF8CHAR_USERDEF:
739 110 : {
740 110 : tree literal;
741 110 : cpp_token temp_tok = *tok;
742 110 : const char *suffix = cpp_get_userdef_suffix (tok);
743 110 : temp_tok.val.str.len -= strlen (suffix);
744 110 : temp_tok.type = cpp_userdef_char_remove_type (type);
745 110 : literal = build_userdef_literal (get_identifier (suffix),
746 : lex_charconst (&temp_tok),
747 : OT_NONE, NULL_TREE);
748 110 : *value = literal;
749 : }
750 110 : break;
751 :
752 9280641 : case CPP_CHAR:
753 9280641 : case CPP_WCHAR:
754 9280641 : case CPP_CHAR16:
755 9280641 : case CPP_CHAR32:
756 9280641 : case CPP_UTF8CHAR:
757 9280641 : *value = lex_charconst (tok);
758 9280641 : break;
759 :
760 318975 : case CPP_STRING_USERDEF:
761 318975 : case CPP_WSTRING_USERDEF:
762 318975 : case CPP_STRING16_USERDEF:
763 318975 : case CPP_STRING32_USERDEF:
764 318975 : case CPP_UTF8STRING_USERDEF:
765 318975 : {
766 318975 : tree literal, string;
767 318975 : const char *suffix = cpp_get_userdef_suffix (tok);
768 637950 : string = build_string (tok->val.str.len - strlen (suffix),
769 318975 : (const char *) tok->val.str.text);
770 318975 : literal = build_userdef_literal (get_identifier (suffix),
771 : string, OT_NONE, NULL_TREE);
772 318975 : *value = literal;
773 : }
774 318975 : break;
775 :
776 56187856 : case CPP_STRING:
777 56187856 : case CPP_WSTRING:
778 56187856 : case CPP_STRING16:
779 56187856 : case CPP_STRING32:
780 56187856 : case CPP_UTF8STRING:
781 56187856 : if ((lex_flags & C_LEX_STRING_NO_JOIN) == 0)
782 : {
783 18 : type = lex_string (tok, value, false,
784 : (lex_flags & C_LEX_STRING_NO_TRANSLATE) == 0);
785 18 : break;
786 : }
787 56187838 : *value = build_string (tok->val.str.len, (const char *) tok->val.str.text);
788 56187838 : break;
789 :
790 9473781 : case CPP_PRAGMA:
791 9473781 : *value = build_int_cst (integer_type_node, tok->val.pragma);
792 9473781 : break;
793 :
794 877 : case CPP_HEADER_NAME:
795 877 : *value = build_string (tok->val.str.len, (const char *)tok->val.str.text);
796 877 : break;
797 :
798 404 : case CPP_EMBED:
799 404 : *value = make_node (RAW_DATA_CST);
800 404 : TREE_TYPE (*value) = integer_type_node;
801 404 : RAW_DATA_LENGTH (*value) = tok->val.str.len;
802 404 : if (pch_file)
803 : {
804 : /* When writing PCH headers, copy the data over, such that
805 : the owner is a STRING_CST. */
806 6 : int off = 0;
807 6 : if (tok->val.str.len <= INT_MAX - 2)
808 : /* See below. */
809 6 : off = 1;
810 12 : tree owner = build_string (tok->val.str.len + 2 * off,
811 6 : (const char *) tok->val.str.text - off);
812 6 : TREE_TYPE (owner) = build_array_type_nelts (unsigned_char_type_node,
813 6 : tok->val.str.len);
814 6 : RAW_DATA_OWNER (*value) = owner;
815 6 : RAW_DATA_POINTER (*value) = TREE_STRING_POINTER (owner) + off;
816 : }
817 : else
818 : {
819 : /* Otherwise add another dummy RAW_DATA_CST as owner which
820 : indicates the data is owned by libcpp. */
821 398 : RAW_DATA_POINTER (*value) = (const char *) tok->val.str.text;
822 398 : tree owner = make_node (RAW_DATA_CST);
823 398 : TREE_TYPE (owner) = integer_type_node;
824 398 : RAW_DATA_LENGTH (owner) = tok->val.str.len;
825 398 : RAW_DATA_POINTER (owner) = (const char *) tok->val.str.text;
826 398 : if (tok->val.str.len <= INT_MAX - 2)
827 : {
828 : /* The preprocessor surrounds at least smaller CPP_EMBEDs
829 : in between CPP_NUMBER CPP_COMMA before and
830 : CPP_COMMA CPP_NUMBER after, so the actual libcpp buffer
831 : holds those 2 extra bytes around it. Don't do that if
832 : CPP_EMBED is at the maximum ~ 2GB size. */
833 398 : RAW_DATA_LENGTH (owner) += 2;
834 398 : RAW_DATA_POINTER (owner)--;
835 : }
836 398 : RAW_DATA_OWNER (*value) = owner;
837 : }
838 : break;
839 :
840 : /* This token should not be visible outside cpplib. */
841 0 : case CPP_MACRO_ARG:
842 0 : gcc_unreachable ();
843 :
844 : /* CPP_COMMENT will appear when compiling with -C. Ignore, except
845 : when it is a FALLTHROUGH comment, in that case set
846 : PREV_FALLTHROUGH flag on the next non-comment token. */
847 328 : case CPP_COMMENT:
848 328 : if (tok->flags & PREV_FALLTHROUGH)
849 : {
850 168 : do
851 : {
852 168 : tok = get_token (parse_in, loc);
853 168 : type = tok->type;
854 : }
855 168 : while (type == CPP_PADDING || type == CPP_COMMENT);
856 144 : add_flags |= PREV_FALLTHROUGH;
857 144 : goto retry_after_at;
858 : }
859 184 : goto retry;
860 :
861 6288383832 : default:
862 6288383832 : *value = NULL_TREE;
863 6288383832 : break;
864 : }
865 :
866 12109757314 : if (cpp_flags)
867 12109757314 : *cpp_flags = tok->flags | add_flags;
868 :
869 12109757314 : timevar_pop (TV_CPP);
870 :
871 12109757314 : return type;
872 : }
873 :
874 : /* Returns the narrowest C-visible unsigned type, starting with the
875 : minimum specified by FLAGS, that can fit HIGH:LOW, or itk_none if
876 : there isn't one. */
877 :
878 : static enum integer_type_kind
879 196509246 : narrowest_unsigned_type (const widest_int &val, unsigned int flags)
880 : {
881 196509246 : int itk;
882 :
883 196509246 : if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
884 : itk = itk_unsigned_int;
885 3773901 : else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
886 : itk = itk_unsigned_long;
887 : else
888 1300597 : itk = itk_unsigned_long_long;
889 :
890 196749100 : for (; itk < itk_none; itk += 2 /* skip unsigned types */)
891 : {
892 196749100 : tree upper;
893 :
894 196749100 : if (integer_types[itk] == NULL_TREE)
895 0 : continue;
896 196749100 : upper = TYPE_MAX_VALUE (integer_types[itk]);
897 :
898 196749100 : if (wi::geu_p (wi::to_widest (upper), val))
899 196509246 : return (enum integer_type_kind) itk;
900 : }
901 :
902 : return itk_none;
903 : }
904 :
905 : /* Ditto, but narrowest signed type. */
906 : static enum integer_type_kind
907 192640447 : narrowest_signed_type (const widest_int &val, unsigned int flags)
908 : {
909 192640447 : int itk;
910 :
911 192640447 : if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
912 : itk = itk_int;
913 1334733 : else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
914 : itk = itk_long;
915 : else
916 298923 : itk = itk_long_long;
917 :
918 192853128 : for (; itk < itk_none; itk += 2 /* skip signed types */)
919 : {
920 192852030 : tree upper;
921 :
922 192852030 : if (integer_types[itk] == NULL_TREE)
923 4392 : continue;
924 192847638 : upper = TYPE_MAX_VALUE (integer_types[itk]);
925 :
926 192847638 : if (wi::geu_p (wi::to_widest (upper), val))
927 192639349 : return (enum integer_type_kind) itk;
928 : }
929 :
930 : return itk_none;
931 : }
932 :
933 : /* Interpret TOKEN, an integer with FLAGS as classified by cpplib. */
934 : static tree
935 196529593 : interpret_integer (const cpp_token *token, unsigned int flags,
936 : enum overflow_type *overflow)
937 : {
938 196529593 : tree value, type;
939 196529593 : enum integer_type_kind itk;
940 196529593 : cpp_num integer;
941 196529593 : HOST_WIDE_INT ival[3];
942 :
943 196529593 : *overflow = OT_NONE;
944 :
945 196529593 : if (UNLIKELY (flags & CPP_N_BITINT))
946 : {
947 20347 : unsigned int suffix_len = 2 + ((flags & CPP_N_UNSIGNED) ? 1 : 0);
948 20347 : int max_bits_per_digit = 4; // ceil (log2 (10))
949 20347 : unsigned int prefix_len = 0;
950 20347 : bool hex = false;
951 20347 : const int bitint_maxwidth = WIDE_INT_MAX_PRECISION - 1;
952 20347 : if ((flags & CPP_N_RADIX) == CPP_N_OCTAL)
953 : {
954 1201 : max_bits_per_digit = 3;
955 1201 : prefix_len = 1;
956 1201 : if (token->val.str.len > 2
957 1201 : && (token->val.str.text[1] == 'o'
958 1200 : || token->val.str.text[1] == 'O'))
959 20347 : prefix_len = 2;
960 : }
961 19146 : else if ((flags & CPP_N_RADIX) == CPP_N_HEX)
962 : {
963 : max_bits_per_digit = 4;
964 : prefix_len = 2;
965 : hex = true;
966 : }
967 18876 : else if ((flags & CPP_N_RADIX) == CPP_N_BINARY)
968 : {
969 1 : max_bits_per_digit = 1;
970 1 : prefix_len = 2;
971 : }
972 20347 : int max_digits
973 20347 : = TYPE_PRECISION (intmax_type_node) >> max_bits_per_digit;
974 20347 : const int max_buf = 128;
975 20347 : if (max_digits > max_buf)
976 : max_digits = max_buf;
977 :
978 20347 : widest_int wval;
979 20347 : unsigned int prec;
980 20347 : gcc_checking_assert (token->val.str.len > prefix_len + suffix_len
981 : || token->val.str.len == 1 + suffix_len);
982 20347 : if (token->val.str.len - (prefix_len + suffix_len)
983 20347 : <= (unsigned) max_digits)
984 : {
985 3233 : integer = cpp_interpret_integer (parse_in, token,
986 : (flags & CPP_N_RADIX)
987 : | CPP_N_UNSIGNED);
988 3233 : ival[0] = integer.low;
989 3233 : ival[1] = integer.high;
990 3233 : ival[2] = 0;
991 3233 : wval = widest_int::from_array (ival, 3);
992 : }
993 : else
994 : {
995 17114 : unsigned char buf[3 + max_buf];
996 17114 : memcpy (buf, token->val.str.text, prefix_len);
997 17114 : wval = 0U;
998 17114 : const unsigned char *p = token->val.str.text + prefix_len;
999 17114 : cpp_token tok = *token;
1000 17114 : tok.val.str.text = buf;
1001 17114 : if (!prefix_len)
1002 16860 : max_digits = 19;
1003 213910 : do
1004 : {
1005 115512 : unsigned char *q = buf + prefix_len;
1006 1620109 : do
1007 : {
1008 1620109 : unsigned char c = *p++;
1009 1620109 : if (ISDIGIT (c) || (hex && ISXDIGIT (c)))
1010 : {
1011 1587085 : *q++ = c;
1012 1587085 : if (q == buf + prefix_len + max_digits)
1013 : break;
1014 : }
1015 33024 : else if (c != '\'')
1016 : {
1017 : --p;
1018 : break;
1019 : }
1020 : }
1021 : while (1);
1022 115512 : if (q == buf + prefix_len)
1023 : break;
1024 : else
1025 : {
1026 98398 : wi::overflow_type wioverflow;
1027 98398 : *q = '\0';
1028 98398 : tok.val.str.len = q - buf;
1029 98398 : if (wval == 0)
1030 : ;
1031 81257 : else if (prefix_len)
1032 : {
1033 4549 : prec = wi::min_precision (wval, UNSIGNED);
1034 4549 : unsigned HOST_WIDE_INT shift
1035 4549 : = (tok.val.str.len - prefix_len) * max_bits_per_digit;
1036 4549 : if (prec + shift > bitint_maxwidth)
1037 0 : goto bitint_overflow;
1038 5733 : wval = wi::lshift (wval, shift);
1039 : }
1040 : else
1041 : {
1042 76708 : static unsigned HOST_WIDE_INT tens[]
1043 : = { 1U, 10U, 100U, 1000U,
1044 : HOST_WIDE_INT_UC (10000),
1045 : HOST_WIDE_INT_UC (100000),
1046 : HOST_WIDE_INT_UC (1000000),
1047 : HOST_WIDE_INT_UC (10000000),
1048 : HOST_WIDE_INT_UC (100000000),
1049 : HOST_WIDE_INT_UC (1000000000),
1050 : HOST_WIDE_INT_UC (10000000000),
1051 : HOST_WIDE_INT_UC (100000000000),
1052 : HOST_WIDE_INT_UC (1000000000000),
1053 : HOST_WIDE_INT_UC (10000000000000),
1054 : HOST_WIDE_INT_UC (100000000000000),
1055 : HOST_WIDE_INT_UC (1000000000000000),
1056 : HOST_WIDE_INT_UC (10000000000000000),
1057 : HOST_WIDE_INT_UC (100000000000000000),
1058 : HOST_WIDE_INT_UC (1000000000000000000),
1059 : HOST_WIDE_INT_UC (10000000000000000000) };
1060 76708 : widest_int ten = tens[q - buf];
1061 76708 : wval = wi::umul (wval, ten, &wioverflow);
1062 76708 : if (wioverflow)
1063 0 : goto bitint_overflow;
1064 76708 : }
1065 98398 : integer = cpp_interpret_integer (parse_in, &tok,
1066 : (flags & CPP_N_RADIX)
1067 : | CPP_N_UNSIGNED);
1068 98398 : ival[0] = integer.low;
1069 98398 : ival[1] = integer.high;
1070 98398 : ival[2] = 0;
1071 98398 : if (prefix_len)
1072 6014 : wval = wval + widest_int::from_array (ival, 3);
1073 : else
1074 : {
1075 93568 : widest_int addend = widest_int::from_array (ival, 3);
1076 93568 : wval = wi::add (wval, addend, UNSIGNED, &wioverflow);
1077 93568 : if (wioverflow)
1078 0 : goto bitint_overflow;
1079 93568 : }
1080 : }
1081 98398 : }
1082 : while (1);
1083 : }
1084 :
1085 20347 : prec = wi::min_precision (wval, UNSIGNED);
1086 20347 : if (prec == 0 && ((flags & CPP_N_UNSIGNED) != 0 || !flag_isoc2y))
1087 455 : prec = 1;
1088 19846 : if ((flags & CPP_N_UNSIGNED) == 0)
1089 14474 : ++prec;
1090 20347 : if (prec > bitint_maxwidth)
1091 : {
1092 0 : bitint_overflow:
1093 0 : if ((flags & CPP_N_UNSIGNED) != 0)
1094 0 : error ("integer constant is too large for "
1095 : "%<unsigned _BitInt(%d)%> type", bitint_maxwidth);
1096 : else
1097 0 : error ("integer constant is too large for "
1098 : "%<_BitInt(%d)%> type", bitint_maxwidth);
1099 0 : return integer_zero_node;
1100 : }
1101 :
1102 20347 : struct bitint_info info;
1103 20347 : if (!targetm.c.bitint_type_info (prec, &info))
1104 : {
1105 0 : sorry ("%<_BitInt(%d)%> is not supported on this target", prec);
1106 0 : return integer_zero_node;
1107 : }
1108 :
1109 20347 : type = build_bitint_type (prec, (flags & CPP_N_UNSIGNED) != 0);
1110 20347 : return wide_int_to_tree (type, wval);
1111 20347 : }
1112 :
1113 196509246 : integer = cpp_interpret_integer (parse_in, token, flags);
1114 196509246 : if (integer.overflow)
1115 20 : *overflow = OT_OVERFLOW;
1116 :
1117 196509246 : ival[0] = integer.low;
1118 196509246 : ival[1] = integer.high;
1119 196509246 : ival[2] = 0;
1120 393018492 : widest_int wval = widest_int::from_array (ival, 3);
1121 :
1122 : /* The type of a constant with a U suffix is straightforward. */
1123 196509246 : if (flags & CPP_N_UNSIGNED)
1124 3868799 : itk = narrowest_unsigned_type (wval, flags);
1125 : else
1126 : {
1127 : /* The type of a potentially-signed integer constant varies
1128 : depending on the base it's in, the standard in use, and the
1129 : length suffixes. */
1130 192640447 : enum integer_type_kind itk_u
1131 192640447 : = narrowest_unsigned_type (wval, flags);
1132 192640447 : enum integer_type_kind itk_s
1133 192640447 : = narrowest_signed_type (wval, flags);
1134 :
1135 : /* In both C89 and C99, octal and hex constants may be signed or
1136 : unsigned, whichever fits tighter. We do not warn about this
1137 : choice differing from the traditional choice, as the constant
1138 : is probably a bit pattern and either way will work. */
1139 192640447 : if ((flags & CPP_N_RADIX) != CPP_N_DECIMAL)
1140 192640432 : itk = MIN (itk_u, itk_s);
1141 : else
1142 : {
1143 : /* In C99, decimal constants are always signed.
1144 : In C89, decimal constants that don't fit in long have
1145 : undefined behavior; we try to make them unsigned long.
1146 : In GCC's extended C89, that last is true of decimal
1147 : constants that don't fit in long long, too. */
1148 :
1149 139723633 : itk = itk_s;
1150 139723633 : if (itk_s > itk_u && itk_s > itk_long)
1151 : {
1152 32 : if (!flag_isoc99)
1153 : {
1154 15 : if (itk_u < itk_unsigned_long)
1155 : itk_u = itk_unsigned_long;
1156 15 : itk = itk_u;
1157 15 : warning (0, "this decimal constant is unsigned only in ISO C90");
1158 : }
1159 : else
1160 17 : warning (OPT_Wtraditional,
1161 : "this decimal constant would be unsigned in ISO C90");
1162 : }
1163 : }
1164 : }
1165 :
1166 196509246 : if (itk == itk_none)
1167 : /* cpplib has already issued a warning for overflow. */
1168 0 : type = ((flags & CPP_N_UNSIGNED)
1169 0 : ? widest_unsigned_literal_type_node
1170 : : widest_integer_literal_type_node);
1171 196509246 : else if (flags & CPP_N_SIZE_T)
1172 : {
1173 : /* itk refers to fundamental types not aliased size types. */
1174 2136 : if (flags & CPP_N_UNSIGNED)
1175 2127 : type = size_type_node;
1176 : else
1177 9 : type = signed_size_type_node;
1178 : }
1179 : else
1180 : {
1181 196507110 : type = integer_types[itk];
1182 196507110 : if (itk > itk_unsigned_long
1183 1316539 : && (flags & CPP_N_WIDTH) != CPP_N_LARGE)
1184 15942 : emit_diagnostic
1185 47826 : ((c_dialect_cxx () ? cxx_dialect == cxx98 : !flag_isoc99)
1186 : ? diagnostics::kind::pedwarn : diagnostics::kind::warning,
1187 15942 : input_location, OPT_Wlong_long,
1188 : (flags & CPP_N_UNSIGNED)
1189 : ? "integer constant is too large for %<unsigned long%> type"
1190 : : "integer constant is too large for %<long%> type");
1191 : }
1192 :
1193 196509246 : value = wide_int_to_tree (type, wval);
1194 :
1195 : /* Convert imaginary to a complex type. */
1196 196509246 : if (flags & CPP_N_IMAGINARY)
1197 3150 : value = build_complex (NULL_TREE, build_int_cst (type, 0), value);
1198 :
1199 196509246 : return value;
1200 : }
1201 :
1202 : /* Interpret TOKEN, a floating point number with FLAGS as classified
1203 : by cpplib. For C++11 SUFFIX may contain a user-defined literal suffix. */
1204 : static tree
1205 5022720 : interpret_float (const cpp_token *token, unsigned int flags,
1206 : const char *suffix, enum overflow_type *overflow)
1207 : {
1208 5022720 : tree type;
1209 5022720 : tree const_type;
1210 5022720 : tree value;
1211 5022720 : REAL_VALUE_TYPE real;
1212 5022720 : REAL_VALUE_TYPE real_trunc;
1213 5022720 : char *copy;
1214 5022720 : size_t copylen;
1215 :
1216 5022720 : *overflow = OT_NONE;
1217 :
1218 : /* Default (no suffix) depends on whether the FLOAT_CONST_DECIMAL64
1219 : pragma has been used and is either double or _Decimal64. Types
1220 : that are not allowed with decimal float default to double. */
1221 5022720 : if (flags & CPP_N_DEFAULT)
1222 : {
1223 2593506 : flags ^= CPP_N_DEFAULT;
1224 2593506 : flags |= CPP_N_MEDIUM;
1225 :
1226 2593506 : if (((flags & CPP_N_HEX) == 0) && ((flags & CPP_N_IMAGINARY) == 0))
1227 : {
1228 2569036 : warning (OPT_Wunsuffixed_float_constants,
1229 : "unsuffixed floating constant");
1230 2569036 : if (float_const_decimal64_p ())
1231 23 : flags |= CPP_N_DFLOAT;
1232 : }
1233 : }
1234 :
1235 : /* Decode _Fract and _Accum. */
1236 5022720 : if (flags & CPP_N_FRACT || flags & CPP_N_ACCUM)
1237 54 : return interpret_fixed (token, flags);
1238 :
1239 : /* Decode type based on width and properties. */
1240 5022666 : if (flags & CPP_N_DFLOAT)
1241 16109 : if (!targetm.decimal_float_supported_p ())
1242 : {
1243 0 : error ("decimal floating-point not supported for this target");
1244 0 : return error_mark_node;
1245 : }
1246 16109 : else if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
1247 5088 : type = dfloat128_type_node;
1248 11021 : else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
1249 5518 : type = dfloat32_type_node;
1250 5503 : else if ((flags & CPP_N_FLOATNX) != 0)
1251 81 : type = dfloat64x_type_node;
1252 : else
1253 5422 : type = dfloat64_type_node;
1254 : else
1255 5006557 : if (flags & CPP_N_WIDTH_MD)
1256 : {
1257 202694 : char suffix;
1258 202694 : machine_mode mode;
1259 :
1260 202694 : if ((flags & CPP_N_WIDTH_MD) == CPP_N_MD_W)
1261 : suffix = 'w';
1262 : else
1263 202657 : suffix = 'q';
1264 :
1265 202694 : mode = targetm.c.mode_for_suffix (suffix);
1266 202694 : if (mode == VOIDmode)
1267 : {
1268 0 : error ("unsupported non-standard suffix on floating constant");
1269 :
1270 0 : return error_mark_node;
1271 : }
1272 : else
1273 202694 : pedwarn (input_location, OPT_Wpedantic, "non-standard suffix on floating constant");
1274 :
1275 202694 : type = c_common_type_for_mode (mode, 0);
1276 : /* For Q suffix, prefer float128t_type_node (__float128) type
1277 : over float128_type_node (_Float128) type if they are distinct. */
1278 202694 : if (type == float128_type_node && float128t_type_node)
1279 202694 : type = float128t_type_node;
1280 202694 : gcc_assert (type);
1281 : }
1282 4803863 : else if ((flags & (CPP_N_FLOATN | CPP_N_FLOATNX)) != 0)
1283 : {
1284 476225 : unsigned int n = (flags & CPP_N_WIDTH_FLOATN_NX) >> CPP_FLOATN_SHIFT;
1285 476225 : bool extended = (flags & CPP_N_FLOATNX) != 0;
1286 476225 : type = NULL_TREE;
1287 1159136 : for (int i = 0; i < NUM_FLOATN_NX_TYPES; i++)
1288 1159136 : if (floatn_nx_types[i].n == (int) n
1289 479003 : && floatn_nx_types[i].extended == extended)
1290 : {
1291 476225 : type = FLOATN_NX_TYPE_NODE (i);
1292 476225 : break;
1293 : }
1294 476225 : if (type == NULL_TREE)
1295 : {
1296 0 : error ("unsupported non-standard suffix on floating constant");
1297 0 : return error_mark_node;
1298 : }
1299 476225 : else if (!c_dialect_cxx ())
1300 : {
1301 94778 : if (warn_c11_c23_compat > 0)
1302 : {
1303 12 : if (pedantic && !flag_isoc23)
1304 0 : pedwarn (input_location, OPT_Wc11_c23_compat,
1305 : "non-standard suffix on floating constant "
1306 : "before C23");
1307 : else
1308 12 : warning (OPT_Wc11_c23_compat,
1309 : "non-standard suffix on floating constant "
1310 : "before C23");
1311 : }
1312 94766 : else if (warn_c11_c23_compat != 0 && pedantic && !flag_isoc23)
1313 40 : pedwarn (input_location, OPT_Wpedantic,
1314 : "non-standard suffix on floating constant "
1315 : "before C23");
1316 : }
1317 381447 : else if (!extended)
1318 : {
1319 381273 : if (cxx_dialect < cxx23 && pedantic)
1320 3992 : pedwarn (input_location, OPT_Wc__23_extensions,
1321 : "%<f%d%> or %<F%d%> suffix on floating constant only "
1322 : "available with %<-std=c++23%> or %<-std=gnu++23%>",
1323 : n, n);
1324 : }
1325 : else
1326 174 : pedwarn (input_location, OPT_Wpedantic,
1327 : "non-standard suffix on floating constant");
1328 : }
1329 4327638 : else if ((flags & CPP_N_BFLOAT16) != 0)
1330 : {
1331 103609 : type = bfloat16_type_node;
1332 103609 : if (type == NULL_TREE)
1333 : {
1334 0 : error ("unsupported non-standard suffix on floating constant");
1335 0 : return error_mark_node;
1336 : }
1337 103609 : if (!c_dialect_cxx ())
1338 916 : pedwarn (input_location, OPT_Wpedantic,
1339 : "non-standard suffix on floating constant");
1340 102693 : else if (cxx_dialect < cxx23 && pedantic)
1341 2492 : pedwarn (input_location, OPT_Wc__23_extensions,
1342 : "%<bf16%> or %<BF16%> suffix on floating constant only "
1343 : "available with %<-std=c++23%> or %<-std=gnu++23%>");
1344 : }
1345 4224029 : else if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
1346 1194151 : type = long_double_type_node;
1347 3029878 : else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL
1348 2593623 : || flag_single_precision_constant)
1349 436448 : type = float_type_node;
1350 : else
1351 2593430 : type = double_type_node;
1352 :
1353 5022666 : const_type = excess_precision_type (type);
1354 5022666 : if (!const_type)
1355 4869037 : const_type = type;
1356 :
1357 : /* Copy the constant to a nul-terminated buffer. If the constant
1358 : has any suffixes, cut them off; REAL_VALUE_ATOF/ REAL_VALUE_HTOF
1359 : can't handle them. */
1360 5022666 : copylen = token->val.str.len;
1361 5022666 : if (flags & CPP_N_USERDEF)
1362 31759 : copylen -= strlen (suffix);
1363 4990907 : else if (flags & CPP_N_DFLOAT)
1364 : {
1365 16109 : if (ISDIGIT (token->val.str.text[copylen - 1]))
1366 146 : copylen -= (flags & CPP_N_LARGE) ? 4 : 3;
1367 16026 : else if ((flags & CPP_N_FLOATNX) != 0)
1368 81 : copylen -= 4;
1369 : else
1370 15945 : copylen -= 2;
1371 : }
1372 : else
1373 : {
1374 4974798 : if ((flags & CPP_N_WIDTH) != CPP_N_MEDIUM)
1375 : /* Must be an F or L or machine defined suffix. */
1376 2381175 : copylen--;
1377 4974798 : if (flags & CPP_N_IMAGINARY)
1378 : /* I or J suffix. */
1379 51274 : copylen--;
1380 4974798 : if (flags & CPP_N_FLOATNX)
1381 2778 : copylen--;
1382 4974798 : if (flags & (CPP_N_FLOATN | CPP_N_FLOATNX))
1383 : {
1384 476225 : unsigned int n = (flags & CPP_N_WIDTH_FLOATN_NX) >> CPP_FLOATN_SHIFT;
1385 1540960 : while (n > 0)
1386 : {
1387 1064735 : copylen--;
1388 1064735 : n /= 10;
1389 : }
1390 : }
1391 : }
1392 :
1393 5022666 : copy = (char *) alloca (copylen + 1);
1394 5022666 : if (c_dialect_cxx () ? cxx_dialect > cxx11 : flag_isoc23)
1395 : {
1396 : size_t maxlen = 0;
1397 68123659 : for (size_t i = 0; i < copylen; ++i)
1398 63298229 : if (token->val.str.text[i] != '\'')
1399 63298173 : copy[maxlen++] = token->val.str.text[i];
1400 4825430 : copy[maxlen] = '\0';
1401 : }
1402 : else
1403 : {
1404 197236 : memcpy (copy, token->val.str.text, copylen);
1405 197236 : copy[copylen] = '\0';
1406 : }
1407 :
1408 5022666 : real_from_string3 (&real, copy, TYPE_MODE (const_type));
1409 5022666 : if (const_type != type)
1410 : /* Diagnosing if the result of converting the value with excess
1411 : precision to the semantic type would overflow (with associated
1412 : double rounding) is more appropriate than diagnosing if the
1413 : result of converting the string directly to the semantic type
1414 : would overflow. */
1415 153629 : real_convert (&real_trunc, TYPE_MODE (type), &real);
1416 :
1417 : /* Both C and C++ require a diagnostic for a floating constant
1418 : outside the range of representable values of its type. Since we
1419 : have __builtin_inf* to produce an infinity, this is now a
1420 : mandatory pedwarn if the target does not support infinities. */
1421 5022666 : if (REAL_VALUE_ISINF (real)
1422 5022666 : || (const_type != type && REAL_VALUE_ISINF (real_trunc)))
1423 : {
1424 58 : *overflow = OT_OVERFLOW;
1425 58 : if (!(flags & CPP_N_USERDEF))
1426 : {
1427 188 : if (!MODE_HAS_INFINITIES (TYPE_MODE (type)))
1428 0 : pedwarn (input_location, 0,
1429 : "floating constant exceeds range of %qT", type);
1430 : else
1431 49 : warning (OPT_Woverflow,
1432 : "floating constant exceeds range of %qT", type);
1433 : }
1434 : }
1435 : /* We also give a warning if the value underflows. */
1436 5022608 : else if (real_equal (&real, &dconst0)
1437 5022608 : || (const_type != type
1438 68754 : && real_equal (&real_trunc, &dconst0)))
1439 : {
1440 1224757 : REAL_VALUE_TYPE realvoidmode;
1441 1224757 : int oflow = real_from_string (&realvoidmode, copy);
1442 1224757 : *overflow = (oflow == 0 ? OT_NONE
1443 21 : : (oflow < 0 ? OT_UNDERFLOW : OT_OVERFLOW));
1444 1224757 : if (!(flags & CPP_N_USERDEF))
1445 : {
1446 1193236 : if (oflow < 0 || !real_equal (&realvoidmode, &dconst0))
1447 30 : warning (OPT_Woverflow, "floating constant truncated to zero");
1448 : }
1449 : }
1450 :
1451 : /* Create a node with determined type and value. */
1452 5022666 : value = build_real (const_type, real);
1453 5022666 : if (flags & CPP_N_IMAGINARY)
1454 : {
1455 51274 : value = build_complex (NULL_TREE,
1456 : fold_convert (const_type,
1457 : integer_zero_node), value);
1458 51274 : if (type != const_type)
1459 : {
1460 58 : const_type = TREE_TYPE (value);
1461 58 : type = build_complex_type (type);
1462 : }
1463 : }
1464 :
1465 5022666 : if (type != const_type)
1466 153629 : value = build1_loc (token->src_loc, EXCESS_PRECISION_EXPR, type, value);
1467 :
1468 : return value;
1469 : }
1470 :
1471 : /* Interpret TOKEN, a fixed-point number with FLAGS as classified
1472 : by cpplib. */
1473 :
1474 : static tree
1475 54 : interpret_fixed (const cpp_token *token, unsigned int flags)
1476 : {
1477 54 : tree type;
1478 54 : tree value;
1479 54 : FIXED_VALUE_TYPE fixed;
1480 54 : char *copy;
1481 54 : size_t copylen;
1482 :
1483 54 : copylen = token->val.str.len;
1484 :
1485 54 : if (flags & CPP_N_FRACT) /* _Fract. */
1486 : {
1487 36 : if (flags & CPP_N_UNSIGNED) /* Unsigned _Fract. */
1488 : {
1489 0 : if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
1490 : {
1491 0 : type = unsigned_long_long_fract_type_node;
1492 0 : copylen -= 4;
1493 : }
1494 0 : else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
1495 : {
1496 0 : type = unsigned_long_fract_type_node;
1497 0 : copylen -= 3;
1498 : }
1499 0 : else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
1500 : {
1501 0 : type = unsigned_short_fract_type_node;
1502 0 : copylen -= 3;
1503 : }
1504 : else
1505 : {
1506 0 : type = unsigned_fract_type_node;
1507 0 : copylen -= 2;
1508 : }
1509 : }
1510 : else /* Signed _Fract. */
1511 : {
1512 36 : if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
1513 : {
1514 0 : type = long_long_fract_type_node;
1515 0 : copylen -= 3;
1516 : }
1517 36 : else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
1518 : {
1519 0 : type = long_fract_type_node;
1520 0 : copylen -= 2;
1521 : }
1522 36 : else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
1523 : {
1524 0 : type = short_fract_type_node;
1525 0 : copylen -= 2;
1526 : }
1527 : else
1528 : {
1529 36 : type = fract_type_node;
1530 36 : copylen --;
1531 : }
1532 : }
1533 : }
1534 : else /* _Accum. */
1535 : {
1536 18 : if (flags & CPP_N_UNSIGNED) /* Unsigned _Accum. */
1537 : {
1538 0 : if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
1539 : {
1540 0 : type = unsigned_long_long_accum_type_node;
1541 0 : copylen -= 4;
1542 : }
1543 0 : else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
1544 : {
1545 0 : type = unsigned_long_accum_type_node;
1546 0 : copylen -= 3;
1547 : }
1548 0 : else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
1549 : {
1550 0 : type = unsigned_short_accum_type_node;
1551 0 : copylen -= 3;
1552 : }
1553 : else
1554 : {
1555 0 : type = unsigned_accum_type_node;
1556 0 : copylen -= 2;
1557 : }
1558 : }
1559 : else /* Signed _Accum. */
1560 : {
1561 18 : if ((flags & CPP_N_WIDTH) == CPP_N_LARGE)
1562 : {
1563 0 : type = long_long_accum_type_node;
1564 0 : copylen -= 3;
1565 : }
1566 18 : else if ((flags & CPP_N_WIDTH) == CPP_N_MEDIUM)
1567 : {
1568 0 : type = long_accum_type_node;
1569 0 : copylen -= 2;
1570 : }
1571 18 : else if ((flags & CPP_N_WIDTH) == CPP_N_SMALL)
1572 : {
1573 0 : type = short_accum_type_node;
1574 0 : copylen -= 2;
1575 : }
1576 : else
1577 : {
1578 18 : type = accum_type_node;
1579 18 : copylen --;
1580 : }
1581 : }
1582 : }
1583 :
1584 54 : copy = (char *) alloca (copylen + 1);
1585 54 : memcpy (copy, token->val.str.text, copylen);
1586 54 : copy[copylen] = '\0';
1587 :
1588 54 : fixed_from_string (&fixed, copy, SCALAR_TYPE_MODE (type));
1589 :
1590 : /* Create a node with determined type and value. */
1591 54 : value = build_fixed (type, fixed);
1592 :
1593 54 : return value;
1594 : }
1595 :
1596 : /* Convert a series of STRING, WSTRING, STRING16, STRING32 and/or
1597 : UTF8STRING tokens into a tree, performing string constant
1598 : concatenation. TOK is the first of these. VALP is the location to
1599 : write the string into. OBJC_STRING indicates whether an '@' token
1600 : preceded the incoming token (in that case, the strings can either
1601 : be ObjC strings, preceded by a single '@', or normal strings, not
1602 : preceded by '@'. The result will be a CPP_OBJC_STRING). Returns
1603 : the CPP token type of the result (CPP_STRING, CPP_WSTRING,
1604 : CPP_STRING32, CPP_STRING16, CPP_UTF8STRING, or CPP_OBJC_STRING).
1605 :
1606 : This is unfortunately more work than it should be. If any of the
1607 : strings in the series has an L prefix, the result is a wide string
1608 : (6.4.5p4). Whether or not the result is a wide string affects the
1609 : meaning of octal and hexadecimal escapes (6.4.4.4p6,9). But escape
1610 : sequences do not continue across the boundary between two strings in
1611 : a series (6.4.5p7), so we must not lose the boundaries. Therefore
1612 : cpp_interpret_string takes a vector of cpp_string structures, which
1613 : we must arrange to provide. */
1614 :
1615 : static enum cpp_ttype
1616 18 : lex_string (const cpp_token *tok, tree *valp, bool objc_string, bool translate)
1617 : {
1618 18 : tree value;
1619 18 : size_t concats = 0;
1620 18 : struct obstack str_ob;
1621 18 : struct obstack loc_ob;
1622 18 : cpp_string istr;
1623 18 : enum cpp_ttype type = tok->type;
1624 :
1625 : /* Try to avoid the overhead of creating and destroying an obstack
1626 : for the common case of just one string. */
1627 18 : cpp_string str = tok->val.str;
1628 18 : location_t init_loc = tok->src_loc;
1629 18 : cpp_string *strs = &str;
1630 18 : location_t *locs = NULL;
1631 :
1632 : /* objc_at_sign_was_seen is only used when doing Objective-C string
1633 : concatenation. It is 'true' if we have seen an '@' before the
1634 : current string, and 'false' if not. We must see exactly one or
1635 : zero '@' before each string. */
1636 18 : bool objc_at_sign_was_seen = false;
1637 :
1638 18 : retry:
1639 18 : tok = get_token (parse_in);
1640 18 : switch (tok->type)
1641 : {
1642 0 : case CPP_PADDING:
1643 0 : goto retry;
1644 0 : case CPP_ATSIGN:
1645 0 : if (objc_string)
1646 : {
1647 0 : if (objc_at_sign_was_seen)
1648 0 : error ("repeated %<@%> before Objective-C string");
1649 :
1650 0 : objc_at_sign_was_seen = true;
1651 0 : goto retry;
1652 : }
1653 : /* FALLTHROUGH */
1654 :
1655 18 : default:
1656 18 : break;
1657 :
1658 0 : case CPP_WSTRING:
1659 0 : case CPP_STRING16:
1660 0 : case CPP_STRING32:
1661 0 : case CPP_UTF8STRING:
1662 0 : if (type != tok->type)
1663 : {
1664 0 : if (type == CPP_STRING)
1665 0 : type = tok->type;
1666 : else
1667 0 : error ("unsupported non-standard concatenation of string literals");
1668 : }
1669 : /* FALLTHROUGH */
1670 :
1671 0 : case CPP_STRING:
1672 0 : if (!concats)
1673 : {
1674 0 : gcc_obstack_init (&str_ob);
1675 0 : gcc_obstack_init (&loc_ob);
1676 0 : obstack_grow (&str_ob, &str, sizeof (cpp_string));
1677 0 : obstack_grow (&loc_ob, &init_loc, sizeof (location_t));
1678 : }
1679 :
1680 0 : concats++;
1681 0 : obstack_grow (&str_ob, &tok->val.str, sizeof (cpp_string));
1682 0 : obstack_grow (&loc_ob, &tok->src_loc, sizeof (location_t));
1683 :
1684 0 : if (objc_string)
1685 0 : objc_at_sign_was_seen = false;
1686 0 : goto retry;
1687 : }
1688 :
1689 : /* It is an error if we saw a '@' with no following string. */
1690 18 : if (objc_at_sign_was_seen)
1691 0 : error ("stray %<@%> in program");
1692 :
1693 : /* We have read one more token than we want. */
1694 18 : _cpp_backup_tokens (parse_in, 1);
1695 18 : if (concats)
1696 : {
1697 0 : strs = XOBFINISH (&str_ob, cpp_string *);
1698 0 : locs = XOBFINISH (&loc_ob, location_t *);
1699 : }
1700 :
1701 18 : if (concats && !objc_string && !in_system_header_at (input_location))
1702 0 : warning (OPT_Wtraditional,
1703 : "traditional C rejects string constant concatenation");
1704 :
1705 18 : if ((translate
1706 18 : ? cpp_interpret_string : cpp_interpret_string_notranslate)
1707 18 : (parse_in, strs, concats + 1, &istr, type))
1708 : {
1709 18 : value = build_string (istr.len, (const char *) istr.text);
1710 18 : free (const_cast<unsigned char *> (istr.text));
1711 18 : if (concats)
1712 : {
1713 0 : gcc_assert (locs);
1714 0 : gcc_assert (g_string_concat_db);
1715 0 : g_string_concat_db->record_string_concatenation (concats + 1, locs);
1716 : }
1717 : }
1718 : else
1719 : {
1720 : /* Callers cannot generally handle error_mark_node in this context,
1721 : so return the empty string instead. cpp_interpret_string has
1722 : issued an error. */
1723 0 : switch (type)
1724 : {
1725 0 : default:
1726 0 : case CPP_STRING:
1727 0 : case CPP_UTF8STRING:
1728 0 : if (type == CPP_UTF8STRING && flag_char8_t)
1729 : {
1730 0 : value = build_string (TYPE_PRECISION (char8_type_node)
1731 0 : / TYPE_PRECISION (char_type_node),
1732 : ""); /* char8_t is 8 bits */
1733 : }
1734 : else
1735 0 : value = build_string (1, "");
1736 : break;
1737 0 : case CPP_STRING16:
1738 0 : value = build_string (TYPE_PRECISION (char16_type_node)
1739 0 : / TYPE_PRECISION (char_type_node),
1740 : "\0"); /* char16_t is 16 bits */
1741 0 : break;
1742 0 : case CPP_STRING32:
1743 0 : value = build_string (TYPE_PRECISION (char32_type_node)
1744 0 : / TYPE_PRECISION (char_type_node),
1745 : "\0\0\0"); /* char32_t is 32 bits */
1746 0 : break;
1747 0 : case CPP_WSTRING:
1748 0 : value = build_string (TYPE_PRECISION (wchar_type_node)
1749 0 : / TYPE_PRECISION (char_type_node),
1750 : "\0\0\0"); /* widest supported wchar_t
1751 : is 32 bits */
1752 0 : break;
1753 : }
1754 : }
1755 :
1756 18 : switch (type)
1757 : {
1758 18 : default:
1759 18 : case CPP_STRING:
1760 18 : TREE_TYPE (value) = char_array_type_node;
1761 18 : break;
1762 0 : case CPP_UTF8STRING:
1763 0 : if (flag_char8_t)
1764 0 : TREE_TYPE (value) = char8_array_type_node;
1765 : else
1766 0 : TREE_TYPE (value) = char_array_type_node;
1767 : break;
1768 0 : case CPP_STRING16:
1769 0 : TREE_TYPE (value) = char16_array_type_node;
1770 0 : break;
1771 0 : case CPP_STRING32:
1772 0 : TREE_TYPE (value) = char32_array_type_node;
1773 0 : break;
1774 0 : case CPP_WSTRING:
1775 0 : TREE_TYPE (value) = wchar_array_type_node;
1776 : }
1777 18 : *valp = fix_string_type (value);
1778 :
1779 18 : if (concats)
1780 : {
1781 0 : obstack_free (&str_ob, 0);
1782 0 : obstack_free (&loc_ob, 0);
1783 : }
1784 :
1785 18 : return objc_string ? CPP_OBJC_STRING : type;
1786 : }
1787 :
1788 : /* Converts a (possibly wide) character constant token into a tree. */
1789 : static tree
1790 9280751 : lex_charconst (const cpp_token *token)
1791 : {
1792 9280751 : cppchar_t result;
1793 9280751 : tree type, value;
1794 9280751 : unsigned int chars_seen;
1795 9280751 : int unsignedp = 0;
1796 :
1797 9280751 : result = cpp_interpret_charconst (parse_in, token,
1798 : &chars_seen, &unsignedp);
1799 :
1800 9280751 : if (token->type == CPP_WCHAR)
1801 545861 : type = wchar_type_node;
1802 8734890 : else if (token->type == CPP_CHAR32)
1803 19664 : type = char32_type_node;
1804 8715226 : else if (token->type == CPP_CHAR16)
1805 19298 : type = char16_type_node;
1806 8695928 : else if (token->type == CPP_UTF8CHAR)
1807 : {
1808 210 : if (flag_char8_t)
1809 176 : type = char8_type_node;
1810 : else
1811 34 : type = char_type_node;
1812 : }
1813 : /* In C, a character constant has type 'int'.
1814 : In C++ 'char', but multi-char charconsts have type 'int'. */
1815 8695718 : else if (!c_dialect_cxx () || chars_seen > 1)
1816 118197 : type = integer_type_node;
1817 : else
1818 8577521 : type = char_type_node;
1819 :
1820 : /* Cast to cppchar_signed_t to get correct sign-extension of RESULT
1821 : before possibly widening to HOST_WIDE_INT for build_int_cst. */
1822 9280751 : if (unsignedp || (cppchar_signed_t) result >= 0)
1823 9278142 : value = build_int_cst (type, result);
1824 : else
1825 2609 : value = build_int_cst (type, (cppchar_signed_t) result);
1826 :
1827 9280751 : return value;
1828 : }
1829 :
1830 : /* Helper function for c_parser_peek_conflict_marker
1831 : and cp_lexer_peek_conflict_marker.
1832 : Given a possible conflict marker token of kind TOK1_KIND
1833 : consisting of a pair of characters, get the token kind for the
1834 : standalone final character. */
1835 :
1836 : enum cpp_ttype
1837 100 : conflict_marker_get_final_tok_kind (enum cpp_ttype tok1_kind)
1838 : {
1839 100 : switch (tok1_kind)
1840 : {
1841 0 : default: gcc_unreachable ();
1842 : case CPP_LSHIFT:
1843 : /* "<<" and '<' */
1844 : return CPP_LESS;
1845 :
1846 31 : case CPP_EQ_EQ:
1847 : /* "==" and '=' */
1848 31 : return CPP_EQ;
1849 :
1850 35 : case CPP_RSHIFT:
1851 : /* ">>" and '>' */
1852 35 : return CPP_GREATER;
1853 : }
1854 : }
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