Line data Source code
1 : /* Declaration statement matcher
2 : Copyright (C) 2002-2026 Free Software Foundation, Inc.
3 : Contributed by Andy Vaught
4 :
5 : This file is part of GCC.
6 :
7 : GCC is free software; you can redistribute it and/or modify it under
8 : the terms of the GNU General Public License as published by the Free
9 : Software Foundation; either version 3, or (at your option) any later
10 : version.
11 :
12 : GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 : WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 : FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 : for more details.
16 :
17 : You should have received a copy of the GNU General Public License
18 : along with GCC; see the file COPYING3. If not see
19 : <http://www.gnu.org/licenses/>. */
20 :
21 : #include "config.h"
22 : #include "system.h"
23 : #include "coretypes.h"
24 : #include "options.h"
25 : #include "tree.h"
26 : #include "gfortran.h"
27 : #include "stringpool.h"
28 : #include "match.h"
29 : #include "parse.h"
30 : #include "constructor.h"
31 : #include "target.h"
32 : #include "flags.h"
33 :
34 : /* Macros to access allocate memory for gfc_data_variable,
35 : gfc_data_value and gfc_data. */
36 : #define gfc_get_data_variable() XCNEW (gfc_data_variable)
37 : #define gfc_get_data_value() XCNEW (gfc_data_value)
38 : #define gfc_get_data() XCNEW (gfc_data)
39 :
40 :
41 : static bool set_binding_label (const char **, const char *, int);
42 :
43 :
44 : /* This flag is set if an old-style length selector is matched
45 : during a type-declaration statement. */
46 :
47 : static int old_char_selector;
48 :
49 : /* When variables acquire types and attributes from a declaration
50 : statement, they get them from the following static variables. The
51 : first part of a declaration sets these variables and the second
52 : part copies these into symbol structures. */
53 :
54 : static gfc_typespec current_ts;
55 :
56 : static symbol_attribute current_attr;
57 : static gfc_array_spec *current_as;
58 : static int colon_seen;
59 : static int attr_seen;
60 :
61 : /* The current binding label (if any). */
62 : static const char* curr_binding_label;
63 : /* Need to know how many identifiers are on the current data declaration
64 : line in case we're given the BIND(C) attribute with a NAME= specifier. */
65 : static int num_idents_on_line;
66 : /* Need to know if a NAME= specifier was found during gfc_match_bind_c so we
67 : can supply a name if the curr_binding_label is nil and NAME= was not. */
68 : static int has_name_equals = 0;
69 :
70 : /* Initializer of the previous enumerator. */
71 :
72 : static gfc_expr *last_initializer;
73 :
74 : /* History of all the enumerators is maintained, so that
75 : kind values of all the enumerators could be updated depending
76 : upon the maximum initialized value. */
77 :
78 : typedef struct enumerator_history
79 : {
80 : gfc_symbol *sym;
81 : gfc_expr *initializer;
82 : struct enumerator_history *next;
83 : }
84 : enumerator_history;
85 :
86 : /* Header of enum history chain. */
87 :
88 : static enumerator_history *enum_history = NULL;
89 :
90 : /* Pointer of enum history node containing largest initializer. */
91 :
92 : static enumerator_history *max_enum = NULL;
93 :
94 : /* gfc_new_block points to the symbol of a newly matched block. */
95 :
96 : gfc_symbol *gfc_new_block;
97 :
98 : bool gfc_matching_function;
99 :
100 : /* Set upon parsing a !GCC$ unroll n directive for use in the next loop. */
101 : int directive_unroll = -1;
102 :
103 : /* Set upon parsing supported !GCC$ pragmas for use in the next loop. */
104 : bool directive_ivdep = false;
105 : bool directive_vector = false;
106 : bool directive_novector = false;
107 :
108 : /* Map of middle-end built-ins that should be vectorized. */
109 : hash_map<nofree_string_hash, int> *gfc_vectorized_builtins;
110 :
111 : /* If a kind expression of a component of a parameterized derived type is
112 : parameterized, temporarily store the expression here. */
113 : static gfc_expr *saved_kind_expr = NULL;
114 :
115 : /* Used to store the parameter list arising in a PDT declaration and
116 : in the typespec of a PDT variable or component. */
117 : static gfc_actual_arglist *decl_type_param_list;
118 : static gfc_actual_arglist *type_param_spec_list;
119 :
120 : /* Drop an unattached gfc_charlen node from the current namespace. This is
121 : used when declaration processing created a length node for a symbol that is
122 : rejected before the node is attached to any surviving symbol. */
123 : static void
124 1 : discard_pending_charlen (gfc_charlen *cl)
125 : {
126 1 : if (!cl || !gfc_current_ns || gfc_current_ns->cl_list != cl)
127 : return;
128 :
129 1 : gfc_remove_saved_charlen (cl);
130 1 : gfc_current_ns->cl_list = cl->next;
131 1 : gfc_free_expr (cl->length);
132 1 : free (cl);
133 : }
134 :
135 : /* Drop the charlen nodes created while matching a declaration that is about
136 : to be rejected. Callers must clear any surviving owners before using this
137 : helper, so only the statement-local nodes remain on the namespace list. */
138 :
139 : static void
140 3 : discard_pending_charlens (gfc_charlen *saved_cl)
141 : {
142 3 : if (!gfc_current_ns)
143 : return;
144 :
145 14 : while (gfc_current_ns->cl_list != saved_cl)
146 : {
147 11 : gfc_charlen *cl = gfc_current_ns->cl_list;
148 :
149 11 : gcc_assert (cl);
150 11 : gfc_remove_saved_charlen (cl);
151 11 : gfc_current_ns->cl_list = cl->next;
152 11 : gfc_free_expr (cl->length);
153 11 : free (cl);
154 : }
155 : }
156 :
157 : /********************* DATA statement subroutines *********************/
158 :
159 : static bool in_match_data = false;
160 :
161 : bool
162 8455 : gfc_in_match_data (void)
163 : {
164 8455 : return in_match_data;
165 : }
166 :
167 : static void
168 4840 : set_in_match_data (bool set_value)
169 : {
170 4840 : in_match_data = set_value;
171 0 : }
172 :
173 : /* Free a gfc_data_variable structure and everything beneath it. */
174 :
175 : static void
176 5663 : free_variable (gfc_data_variable *p)
177 : {
178 5663 : gfc_data_variable *q;
179 :
180 8752 : for (; p; p = q)
181 : {
182 3089 : q = p->next;
183 3089 : gfc_free_expr (p->expr);
184 3089 : gfc_free_iterator (&p->iter, 0);
185 3089 : free_variable (p->list);
186 3089 : free (p);
187 : }
188 5663 : }
189 :
190 :
191 : /* Free a gfc_data_value structure and everything beneath it. */
192 :
193 : static void
194 2574 : free_value (gfc_data_value *p)
195 : {
196 2574 : gfc_data_value *q;
197 :
198 10886 : for (; p; p = q)
199 : {
200 8312 : q = p->next;
201 8312 : mpz_clear (p->repeat);
202 8312 : gfc_free_expr (p->expr);
203 8312 : free (p);
204 : }
205 2574 : }
206 :
207 :
208 : /* Free a list of gfc_data structures. */
209 :
210 : void
211 548145 : gfc_free_data (gfc_data *p)
212 : {
213 548145 : gfc_data *q;
214 :
215 550719 : for (; p; p = q)
216 : {
217 2574 : q = p->next;
218 2574 : free_variable (p->var);
219 2574 : free_value (p->value);
220 2574 : free (p);
221 : }
222 548145 : }
223 :
224 :
225 : /* Free all data in a namespace. */
226 :
227 : static void
228 41 : gfc_free_data_all (gfc_namespace *ns)
229 : {
230 41 : gfc_data *d;
231 :
232 47 : for (;ns->data;)
233 : {
234 6 : d = ns->data->next;
235 6 : free (ns->data);
236 6 : ns->data = d;
237 : }
238 41 : }
239 :
240 : /* Reject data parsed since the last restore point was marked. */
241 :
242 : void
243 9250656 : gfc_reject_data (gfc_namespace *ns)
244 : {
245 9250656 : gfc_data *d;
246 :
247 9250658 : while (ns->data && ns->data != ns->old_data)
248 : {
249 2 : d = ns->data->next;
250 2 : free (ns->data);
251 2 : ns->data = d;
252 : }
253 9250656 : }
254 :
255 : static match var_element (gfc_data_variable *);
256 :
257 : /* Match a list of variables terminated by an iterator and a right
258 : parenthesis. */
259 :
260 : static match
261 154 : var_list (gfc_data_variable *parent)
262 : {
263 154 : gfc_data_variable *tail, var;
264 154 : match m;
265 :
266 154 : m = var_element (&var);
267 154 : if (m == MATCH_ERROR)
268 : return MATCH_ERROR;
269 154 : if (m == MATCH_NO)
270 0 : goto syntax;
271 :
272 154 : tail = gfc_get_data_variable ();
273 154 : *tail = var;
274 :
275 154 : parent->list = tail;
276 :
277 156 : for (;;)
278 : {
279 155 : if (gfc_match_char (',') != MATCH_YES)
280 0 : goto syntax;
281 :
282 155 : m = gfc_match_iterator (&parent->iter, 1);
283 155 : if (m == MATCH_YES)
284 : break;
285 1 : if (m == MATCH_ERROR)
286 : return MATCH_ERROR;
287 :
288 1 : m = var_element (&var);
289 1 : if (m == MATCH_ERROR)
290 : return MATCH_ERROR;
291 1 : if (m == MATCH_NO)
292 0 : goto syntax;
293 :
294 1 : tail->next = gfc_get_data_variable ();
295 1 : tail = tail->next;
296 :
297 1 : *tail = var;
298 : }
299 :
300 154 : if (gfc_match_char (')') != MATCH_YES)
301 0 : goto syntax;
302 : return MATCH_YES;
303 :
304 0 : syntax:
305 0 : gfc_syntax_error (ST_DATA);
306 0 : return MATCH_ERROR;
307 : }
308 :
309 :
310 : /* Match a single element in a data variable list, which can be a
311 : variable-iterator list. */
312 :
313 : static match
314 3047 : var_element (gfc_data_variable *new_var)
315 : {
316 3047 : match m;
317 3047 : gfc_symbol *sym;
318 :
319 3047 : memset (new_var, 0, sizeof (gfc_data_variable));
320 :
321 3047 : if (gfc_match_char ('(') == MATCH_YES)
322 154 : return var_list (new_var);
323 :
324 2893 : m = gfc_match_variable (&new_var->expr, 0);
325 2893 : if (m != MATCH_YES)
326 : return m;
327 :
328 2889 : if (new_var->expr->expr_type == EXPR_CONSTANT
329 2 : && new_var->expr->symtree == NULL)
330 : {
331 2 : gfc_error ("Inquiry parameter cannot appear in a "
332 : "data-stmt-object-list at %C");
333 2 : return MATCH_ERROR;
334 : }
335 :
336 2887 : sym = new_var->expr->symtree->n.sym;
337 :
338 : /* Symbol should already have an associated type. */
339 2887 : if (!gfc_check_symbol_typed (sym, gfc_current_ns, false, gfc_current_locus))
340 : return MATCH_ERROR;
341 :
342 2886 : if (!sym->attr.function && gfc_current_ns->parent
343 148 : && gfc_current_ns->parent == sym->ns)
344 : {
345 1 : gfc_error ("Host associated variable %qs may not be in the DATA "
346 : "statement at %C", sym->name);
347 1 : return MATCH_ERROR;
348 : }
349 :
350 2885 : if (gfc_current_state () != COMP_BLOCK_DATA
351 2732 : && sym->attr.in_common
352 2914 : && !gfc_notify_std (GFC_STD_GNU, "initialization of "
353 : "common block variable %qs in DATA statement at %C",
354 : sym->name))
355 : return MATCH_ERROR;
356 :
357 2883 : if (!gfc_add_data (&sym->attr, sym->name, &new_var->expr->where))
358 5 : return MATCH_ERROR;
359 :
360 : return MATCH_YES;
361 : }
362 :
363 :
364 : /* Match the top-level list of data variables. */
365 :
366 : static match
367 2517 : top_var_list (gfc_data *d)
368 : {
369 2517 : gfc_data_variable var, *tail, *new_var;
370 2517 : match m;
371 :
372 2517 : tail = NULL;
373 :
374 2892 : for (;;)
375 : {
376 2892 : m = var_element (&var);
377 2892 : if (m == MATCH_NO)
378 0 : goto syntax;
379 2892 : if (m == MATCH_ERROR)
380 : return MATCH_ERROR;
381 :
382 2877 : new_var = gfc_get_data_variable ();
383 2877 : *new_var = var;
384 2877 : if (new_var->expr)
385 2751 : new_var->expr->where = gfc_current_locus;
386 :
387 2877 : if (tail == NULL)
388 2502 : d->var = new_var;
389 : else
390 375 : tail->next = new_var;
391 :
392 2877 : tail = new_var;
393 :
394 2877 : if (gfc_match_char ('/') == MATCH_YES)
395 : break;
396 378 : if (gfc_match_char (',') != MATCH_YES)
397 3 : goto syntax;
398 : }
399 :
400 : return MATCH_YES;
401 :
402 3 : syntax:
403 3 : gfc_syntax_error (ST_DATA);
404 3 : gfc_free_data_all (gfc_current_ns);
405 3 : return MATCH_ERROR;
406 : }
407 :
408 :
409 : static match
410 8713 : match_data_constant (gfc_expr **result)
411 : {
412 8713 : char name[GFC_MAX_SYMBOL_LEN + 1];
413 8713 : gfc_symbol *sym, *dt_sym = NULL;
414 8713 : gfc_expr *expr;
415 8713 : match m;
416 8713 : locus old_loc;
417 8713 : gfc_symtree *symtree;
418 :
419 8713 : m = gfc_match_literal_constant (&expr, 1);
420 8713 : if (m == MATCH_YES)
421 : {
422 8368 : *result = expr;
423 8368 : return MATCH_YES;
424 : }
425 :
426 345 : if (m == MATCH_ERROR)
427 : return MATCH_ERROR;
428 :
429 337 : m = gfc_match_null (result);
430 337 : if (m != MATCH_NO)
431 : return m;
432 :
433 329 : old_loc = gfc_current_locus;
434 :
435 : /* Should this be a structure component, try to match it
436 : before matching a name. */
437 329 : m = gfc_match_rvalue (result);
438 329 : if (m == MATCH_ERROR)
439 : return m;
440 :
441 329 : if (m == MATCH_YES && (*result)->expr_type == EXPR_STRUCTURE)
442 : {
443 4 : if (!gfc_simplify_expr (*result, 0))
444 0 : m = MATCH_ERROR;
445 : return m;
446 : }
447 319 : else if (m == MATCH_YES)
448 : {
449 : /* If a parameter inquiry ends up here, symtree is NULL but **result
450 : contains the right constant expression. Check here. */
451 319 : if ((*result)->symtree == NULL
452 37 : && (*result)->expr_type == EXPR_CONSTANT
453 37 : && ((*result)->ts.type == BT_INTEGER
454 1 : || (*result)->ts.type == BT_REAL))
455 : return m;
456 :
457 : /* F2018:R845 data-stmt-constant is initial-data-target.
458 : A data-stmt-constant shall be ... initial-data-target if and
459 : only if the corresponding data-stmt-object has the POINTER
460 : attribute. ... If data-stmt-constant is initial-data-target
461 : the corresponding data statement object shall be
462 : data-pointer-initialization compatible (7.5.4.6) with the initial
463 : data target; the data statement object is initially associated
464 : with the target. */
465 283 : if ((*result)->symtree
466 282 : && (*result)->symtree->n.sym->attr.save
467 218 : && (*result)->symtree->n.sym->attr.target)
468 : return m;
469 250 : gfc_free_expr (*result);
470 : }
471 :
472 256 : gfc_current_locus = old_loc;
473 :
474 256 : m = gfc_match_name (name);
475 256 : if (m != MATCH_YES)
476 : return m;
477 :
478 250 : if (gfc_find_sym_tree (name, NULL, 1, &symtree))
479 : return MATCH_ERROR;
480 :
481 250 : sym = symtree->n.sym;
482 :
483 250 : if (sym && sym->attr.generic)
484 60 : dt_sym = gfc_find_dt_in_generic (sym);
485 :
486 60 : if (sym == NULL
487 250 : || (sym->attr.flavor != FL_PARAMETER
488 65 : && (!dt_sym || !gfc_fl_struct (dt_sym->attr.flavor))))
489 : {
490 5 : gfc_error ("Symbol %qs must be a PARAMETER in DATA statement at %C",
491 : name);
492 5 : *result = NULL;
493 5 : return MATCH_ERROR;
494 : }
495 245 : else if (dt_sym && gfc_fl_struct (dt_sym->attr.flavor))
496 60 : return gfc_match_structure_constructor (dt_sym, symtree, result);
497 :
498 : /* Check to see if the value is an initialization array expression. */
499 185 : if (sym->value->expr_type == EXPR_ARRAY)
500 : {
501 67 : gfc_current_locus = old_loc;
502 :
503 67 : m = gfc_match_init_expr (result);
504 67 : if (m == MATCH_ERROR)
505 : return m;
506 :
507 66 : if (m == MATCH_YES)
508 : {
509 66 : if (!gfc_simplify_expr (*result, 0))
510 0 : m = MATCH_ERROR;
511 :
512 66 : if ((*result)->expr_type == EXPR_CONSTANT)
513 : return m;
514 : else
515 : {
516 2 : gfc_error ("Invalid initializer %s in Data statement at %C", name);
517 2 : return MATCH_ERROR;
518 : }
519 : }
520 : }
521 :
522 118 : *result = gfc_copy_expr (sym->value);
523 118 : return MATCH_YES;
524 : }
525 :
526 :
527 : /* Match a list of values in a DATA statement. The leading '/' has
528 : already been seen at this point. */
529 :
530 : static match
531 2560 : top_val_list (gfc_data *data)
532 : {
533 2560 : gfc_data_value *new_val, *tail;
534 2560 : gfc_expr *expr;
535 2560 : match m;
536 :
537 2560 : tail = NULL;
538 :
539 8349 : for (;;)
540 : {
541 8349 : m = match_data_constant (&expr);
542 8349 : if (m == MATCH_NO)
543 3 : goto syntax;
544 8346 : if (m == MATCH_ERROR)
545 : return MATCH_ERROR;
546 :
547 8324 : new_val = gfc_get_data_value ();
548 8324 : mpz_init (new_val->repeat);
549 :
550 8324 : if (tail == NULL)
551 2535 : data->value = new_val;
552 : else
553 5789 : tail->next = new_val;
554 :
555 8324 : tail = new_val;
556 :
557 8324 : if (expr->ts.type != BT_INTEGER || gfc_match_char ('*') != MATCH_YES)
558 : {
559 8119 : tail->expr = expr;
560 8119 : mpz_set_ui (tail->repeat, 1);
561 : }
562 : else
563 : {
564 205 : mpz_set (tail->repeat, expr->value.integer);
565 205 : gfc_free_expr (expr);
566 :
567 205 : m = match_data_constant (&tail->expr);
568 205 : if (m == MATCH_NO)
569 0 : goto syntax;
570 205 : if (m == MATCH_ERROR)
571 : return MATCH_ERROR;
572 : }
573 :
574 8320 : if (gfc_match_char ('/') == MATCH_YES)
575 : break;
576 5790 : if (gfc_match_char (',') == MATCH_NO)
577 1 : goto syntax;
578 : }
579 :
580 : return MATCH_YES;
581 :
582 4 : syntax:
583 4 : gfc_syntax_error (ST_DATA);
584 4 : gfc_free_data_all (gfc_current_ns);
585 4 : return MATCH_ERROR;
586 : }
587 :
588 :
589 : /* Matches an old style initialization. */
590 :
591 : static match
592 70 : match_old_style_init (const char *name)
593 : {
594 70 : match m;
595 70 : gfc_symtree *st;
596 70 : gfc_symbol *sym;
597 70 : gfc_data *newdata, *nd;
598 :
599 : /* Set up data structure to hold initializers. */
600 70 : gfc_find_sym_tree (name, NULL, 0, &st);
601 70 : sym = st->n.sym;
602 :
603 70 : newdata = gfc_get_data ();
604 70 : newdata->var = gfc_get_data_variable ();
605 70 : newdata->var->expr = gfc_get_variable_expr (st);
606 70 : newdata->var->expr->where = sym->declared_at;
607 70 : newdata->where = gfc_current_locus;
608 :
609 : /* Match initial value list. This also eats the terminal '/'. */
610 70 : m = top_val_list (newdata);
611 70 : if (m != MATCH_YES)
612 : {
613 1 : free (newdata);
614 1 : return m;
615 : }
616 :
617 : /* Check that a BOZ did not creep into an old-style initialization. */
618 137 : for (nd = newdata; nd; nd = nd->next)
619 : {
620 69 : if (nd->value->expr->ts.type == BT_BOZ
621 69 : && gfc_invalid_boz (G_("BOZ at %L cannot appear in an old-style "
622 : "initialization"), &nd->value->expr->where))
623 : return MATCH_ERROR;
624 :
625 68 : if (nd->var->expr->ts.type != BT_INTEGER
626 27 : && nd->var->expr->ts.type != BT_REAL
627 21 : && nd->value->expr->ts.type == BT_BOZ)
628 : {
629 0 : gfc_error (G_("BOZ literal constant near %L cannot be assigned to "
630 : "a %qs variable in an old-style initialization"),
631 0 : &nd->value->expr->where,
632 : gfc_typename (&nd->value->expr->ts));
633 0 : return MATCH_ERROR;
634 : }
635 : }
636 :
637 68 : if (gfc_pure (NULL))
638 : {
639 1 : gfc_error ("Initialization at %C is not allowed in a PURE procedure");
640 1 : free (newdata);
641 1 : return MATCH_ERROR;
642 : }
643 67 : gfc_unset_implicit_pure (gfc_current_ns->proc_name);
644 :
645 : /* Mark the variable as having appeared in a data statement. */
646 67 : if (!gfc_add_data (&sym->attr, sym->name, &sym->declared_at))
647 : {
648 2 : free (newdata);
649 2 : return MATCH_ERROR;
650 : }
651 :
652 : /* Chain in namespace list of DATA initializers. */
653 65 : newdata->next = gfc_current_ns->data;
654 65 : gfc_current_ns->data = newdata;
655 :
656 65 : return m;
657 : }
658 :
659 :
660 : /* Match the stuff following a DATA statement. If ERROR_FLAG is set,
661 : we are matching a DATA statement and are therefore issuing an error
662 : if we encounter something unexpected, if not, we're trying to match
663 : an old-style initialization expression of the form INTEGER I /2/. */
664 :
665 : match
666 2422 : gfc_match_data (void)
667 : {
668 2422 : gfc_data *new_data;
669 2422 : gfc_expr *e;
670 2422 : gfc_ref *ref;
671 2422 : match m;
672 2422 : char c;
673 :
674 : /* DATA has been matched. In free form source code, the next character
675 : needs to be whitespace or '(' from an implied do-loop. Check that
676 : here. */
677 2422 : c = gfc_peek_ascii_char ();
678 2422 : if (gfc_current_form == FORM_FREE && !gfc_is_whitespace (c) && c != '(')
679 : return MATCH_NO;
680 :
681 : /* Before parsing the rest of a DATA statement, check F2008:c1206. */
682 2421 : if ((gfc_current_state () == COMP_FUNCTION
683 2421 : || gfc_current_state () == COMP_SUBROUTINE)
684 1153 : && gfc_state_stack->previous->state == COMP_INTERFACE)
685 : {
686 1 : gfc_error ("DATA statement at %C cannot appear within an INTERFACE");
687 1 : return MATCH_ERROR;
688 : }
689 :
690 2420 : set_in_match_data (true);
691 :
692 2614 : for (;;)
693 : {
694 2517 : new_data = gfc_get_data ();
695 2517 : new_data->where = gfc_current_locus;
696 :
697 2517 : m = top_var_list (new_data);
698 2517 : if (m != MATCH_YES)
699 18 : goto cleanup;
700 :
701 2499 : if (new_data->var->iter.var
702 117 : && new_data->var->iter.var->ts.type == BT_INTEGER
703 74 : && new_data->var->iter.var->symtree->n.sym->attr.implied_index == 1
704 68 : && new_data->var->list
705 68 : && new_data->var->list->expr
706 55 : && new_data->var->list->expr->ts.type == BT_CHARACTER
707 3 : && new_data->var->list->expr->ref
708 3 : && new_data->var->list->expr->ref->type == REF_SUBSTRING)
709 : {
710 1 : gfc_error ("Invalid substring in data-implied-do at %L in DATA "
711 : "statement", &new_data->var->list->expr->where);
712 1 : goto cleanup;
713 : }
714 :
715 : /* Check for an entity with an allocatable component, which is not
716 : allowed. */
717 2498 : e = new_data->var->expr;
718 2498 : if (e)
719 : {
720 2382 : bool invalid;
721 :
722 2382 : invalid = false;
723 3606 : for (ref = e->ref; ref; ref = ref->next)
724 1224 : if ((ref->type == REF_COMPONENT
725 140 : && ref->u.c.component->attr.allocatable)
726 1222 : || (ref->type == REF_ARRAY
727 1034 : && e->symtree->n.sym->attr.pointer != 1
728 1031 : && ref->u.ar.as && ref->u.ar.as->type == AS_DEFERRED))
729 1224 : invalid = true;
730 :
731 2382 : if (invalid)
732 : {
733 2 : gfc_error ("Allocatable component or deferred-shaped array "
734 : "near %C in DATA statement");
735 2 : goto cleanup;
736 : }
737 :
738 : /* F2008:C567 (R536) A data-i-do-object or a variable that appears
739 : as a data-stmt-object shall not be an object designator in which
740 : a pointer appears other than as the entire rightmost part-ref. */
741 2380 : if (!e->ref && e->ts.type == BT_DERIVED
742 43 : && e->symtree->n.sym->attr.pointer)
743 4 : goto partref;
744 :
745 2376 : ref = e->ref;
746 2376 : if (e->symtree->n.sym->ts.type == BT_DERIVED
747 125 : && e->symtree->n.sym->attr.pointer
748 1 : && ref->type == REF_COMPONENT)
749 1 : goto partref;
750 :
751 3591 : for (; ref; ref = ref->next)
752 1217 : if (ref->type == REF_COMPONENT
753 135 : && ref->u.c.component->attr.pointer
754 27 : && ref->next)
755 1 : goto partref;
756 : }
757 :
758 2490 : m = top_val_list (new_data);
759 2490 : if (m != MATCH_YES)
760 29 : goto cleanup;
761 :
762 2461 : new_data->next = gfc_current_ns->data;
763 2461 : gfc_current_ns->data = new_data;
764 :
765 : /* A BOZ literal constant cannot appear in a structure constructor.
766 : Check for that here for a data statement value. */
767 2461 : if (new_data->value->expr->ts.type == BT_DERIVED
768 37 : && new_data->value->expr->value.constructor)
769 : {
770 35 : gfc_constructor *c;
771 35 : c = gfc_constructor_first (new_data->value->expr->value.constructor);
772 106 : for (; c; c = gfc_constructor_next (c))
773 36 : if (c->expr && c->expr->ts.type == BT_BOZ)
774 : {
775 0 : gfc_error ("BOZ literal constant at %L cannot appear in a "
776 : "structure constructor", &c->expr->where);
777 0 : return MATCH_ERROR;
778 : }
779 : }
780 :
781 2461 : if (gfc_match_eos () == MATCH_YES)
782 : break;
783 :
784 97 : gfc_match_char (','); /* Optional comma */
785 97 : }
786 :
787 2364 : set_in_match_data (false);
788 :
789 2364 : if (gfc_pure (NULL))
790 : {
791 0 : gfc_error ("DATA statement at %C is not allowed in a PURE procedure");
792 0 : return MATCH_ERROR;
793 : }
794 2364 : gfc_unset_implicit_pure (gfc_current_ns->proc_name);
795 :
796 2364 : return MATCH_YES;
797 :
798 6 : partref:
799 :
800 6 : gfc_error ("part-ref with pointer attribute near %L is not "
801 : "rightmost part-ref of data-stmt-object",
802 : &e->where);
803 :
804 56 : cleanup:
805 56 : set_in_match_data (false);
806 56 : gfc_free_data (new_data);
807 56 : return MATCH_ERROR;
808 : }
809 :
810 :
811 : /************************ Declaration statements *********************/
812 :
813 :
814 : /* Like gfc_match_init_expr, but matches a 'clist' (old-style initialization
815 : list). The difference here is the expression is a list of constants
816 : and is surrounded by '/'.
817 : The typespec ts must match the typespec of the variable which the
818 : clist is initializing.
819 : The arrayspec tells whether this should match a list of constants
820 : corresponding to array elements or a scalar (as == NULL). */
821 :
822 : static match
823 74 : match_clist_expr (gfc_expr **result, gfc_typespec *ts, gfc_array_spec *as)
824 : {
825 74 : gfc_constructor_base array_head = NULL;
826 74 : gfc_expr *expr = NULL;
827 74 : match m = MATCH_ERROR;
828 74 : locus where;
829 74 : mpz_t repeat, cons_size, as_size;
830 74 : bool scalar;
831 74 : int cmp;
832 :
833 74 : gcc_assert (ts);
834 :
835 : /* We have already matched '/' - now look for a constant list, as with
836 : top_val_list from decl.cc, but append the result to an array. */
837 74 : if (gfc_match ("/") == MATCH_YES)
838 : {
839 1 : gfc_error ("Empty old style initializer list at %C");
840 1 : return MATCH_ERROR;
841 : }
842 :
843 73 : where = gfc_current_locus;
844 73 : scalar = !as || !as->rank;
845 :
846 42 : if (!scalar && !spec_size (as, &as_size))
847 : {
848 2 : gfc_error ("Array in initializer list at %L must have an explicit shape",
849 1 : as->type == AS_EXPLICIT ? &as->upper[0]->where : &where);
850 : /* Nothing to cleanup yet. */
851 1 : return MATCH_ERROR;
852 : }
853 :
854 72 : mpz_init_set_ui (repeat, 0);
855 :
856 143 : for (;;)
857 : {
858 143 : m = match_data_constant (&expr);
859 143 : if (m != MATCH_YES)
860 3 : expr = NULL; /* match_data_constant may set expr to garbage */
861 3 : if (m == MATCH_NO)
862 2 : goto syntax;
863 141 : if (m == MATCH_ERROR)
864 1 : goto cleanup;
865 :
866 : /* Found r in repeat spec r*c; look for the constant to repeat. */
867 140 : if ( gfc_match_char ('*') == MATCH_YES)
868 : {
869 18 : if (scalar)
870 : {
871 1 : gfc_error ("Repeat spec invalid in scalar initializer at %C");
872 1 : goto cleanup;
873 : }
874 17 : if (expr->ts.type != BT_INTEGER)
875 : {
876 1 : gfc_error ("Repeat spec must be an integer at %C");
877 1 : goto cleanup;
878 : }
879 16 : mpz_set (repeat, expr->value.integer);
880 16 : gfc_free_expr (expr);
881 16 : expr = NULL;
882 :
883 16 : m = match_data_constant (&expr);
884 16 : if (m == MATCH_NO)
885 : {
886 1 : m = MATCH_ERROR;
887 1 : gfc_error ("Expected data constant after repeat spec at %C");
888 : }
889 16 : if (m != MATCH_YES)
890 1 : goto cleanup;
891 : }
892 : /* No repeat spec, we matched the data constant itself. */
893 : else
894 122 : mpz_set_ui (repeat, 1);
895 :
896 137 : if (!scalar)
897 : {
898 : /* Add the constant initializer as many times as repeated. */
899 251 : for (; mpz_cmp_ui (repeat, 0) > 0; mpz_sub_ui (repeat, repeat, 1))
900 : {
901 : /* Make sure types of elements match */
902 144 : if(ts && !gfc_compare_types (&expr->ts, ts)
903 12 : && !gfc_convert_type (expr, ts, 1))
904 0 : goto cleanup;
905 :
906 144 : gfc_constructor_append_expr (&array_head,
907 : gfc_copy_expr (expr), &gfc_current_locus);
908 : }
909 :
910 107 : gfc_free_expr (expr);
911 107 : expr = NULL;
912 : }
913 :
914 : /* For scalar initializers quit after one element. */
915 : else
916 : {
917 30 : if(gfc_match_char ('/') != MATCH_YES)
918 : {
919 1 : gfc_error ("End of scalar initializer expected at %C");
920 1 : goto cleanup;
921 : }
922 : break;
923 : }
924 :
925 107 : if (gfc_match_char ('/') == MATCH_YES)
926 : break;
927 72 : if (gfc_match_char (',') == MATCH_NO)
928 1 : goto syntax;
929 : }
930 :
931 : /* If we break early from here out, we encountered an error. */
932 64 : m = MATCH_ERROR;
933 :
934 : /* Set up expr as an array constructor. */
935 64 : if (!scalar)
936 : {
937 35 : expr = gfc_get_array_expr (ts->type, ts->kind, &where);
938 35 : expr->ts = *ts;
939 35 : expr->value.constructor = array_head;
940 :
941 : /* Validate sizes. We built expr ourselves, so cons_size will be
942 : constant (we fail above for non-constant expressions).
943 : We still need to verify that the sizes match. */
944 35 : gcc_assert (gfc_array_size (expr, &cons_size));
945 35 : cmp = mpz_cmp (cons_size, as_size);
946 35 : if (cmp < 0)
947 2 : gfc_error ("Not enough elements in array initializer at %C");
948 33 : else if (cmp > 0)
949 3 : gfc_error ("Too many elements in array initializer at %C");
950 35 : mpz_clear (cons_size);
951 35 : if (cmp)
952 5 : goto cleanup;
953 :
954 : /* Set the rank/shape to match the LHS as auto-reshape is implied. */
955 30 : expr->rank = as->rank;
956 30 : expr->corank = as->corank;
957 30 : expr->shape = gfc_get_shape (as->rank);
958 66 : for (int i = 0; i < as->rank; ++i)
959 36 : spec_dimen_size (as, i, &expr->shape[i]);
960 : }
961 :
962 : /* Make sure scalar types match. */
963 29 : else if (!gfc_compare_types (&expr->ts, ts)
964 29 : && !gfc_convert_type (expr, ts, 1))
965 2 : goto cleanup;
966 :
967 57 : if (expr->ts.u.cl)
968 1 : expr->ts.u.cl->length_from_typespec = 1;
969 :
970 57 : *result = expr;
971 57 : m = MATCH_YES;
972 57 : goto done;
973 :
974 3 : syntax:
975 3 : m = MATCH_ERROR;
976 3 : gfc_error ("Syntax error in old style initializer list at %C");
977 :
978 15 : cleanup:
979 15 : if (expr)
980 10 : expr->value.constructor = NULL;
981 15 : gfc_free_expr (expr);
982 15 : gfc_constructor_free (array_head);
983 :
984 72 : done:
985 72 : mpz_clear (repeat);
986 72 : if (!scalar)
987 41 : mpz_clear (as_size);
988 : return m;
989 : }
990 :
991 :
992 : /* Auxiliary function to merge DIMENSION and CODIMENSION array specs. */
993 :
994 : static bool
995 114 : merge_array_spec (gfc_array_spec *from, gfc_array_spec *to, bool copy)
996 : {
997 114 : if ((from->type == AS_ASSUMED_RANK && to->corank)
998 112 : || (to->type == AS_ASSUMED_RANK && from->corank))
999 : {
1000 5 : gfc_error ("The assumed-rank array at %C shall not have a codimension");
1001 5 : return false;
1002 : }
1003 :
1004 109 : if (to->rank == 0 && from->rank > 0)
1005 : {
1006 48 : to->rank = from->rank;
1007 48 : to->type = from->type;
1008 48 : to->cray_pointee = from->cray_pointee;
1009 48 : to->cp_was_assumed = from->cp_was_assumed;
1010 :
1011 152 : for (int i = to->corank - 1; i >= 0; i--)
1012 : {
1013 : /* Do not exceed the limits on lower[] and upper[]. gfortran
1014 : cleans up elsewhere. */
1015 104 : int j = from->rank + i;
1016 104 : if (j >= GFC_MAX_DIMENSIONS)
1017 : break;
1018 :
1019 104 : to->lower[j] = to->lower[i];
1020 104 : to->upper[j] = to->upper[i];
1021 : }
1022 115 : for (int i = 0; i < from->rank; i++)
1023 : {
1024 67 : if (copy)
1025 : {
1026 43 : to->lower[i] = gfc_copy_expr (from->lower[i]);
1027 43 : to->upper[i] = gfc_copy_expr (from->upper[i]);
1028 : }
1029 : else
1030 : {
1031 24 : to->lower[i] = from->lower[i];
1032 24 : to->upper[i] = from->upper[i];
1033 : }
1034 : }
1035 : }
1036 61 : else if (to->corank == 0 && from->corank > 0)
1037 : {
1038 34 : to->corank = from->corank;
1039 34 : to->cotype = from->cotype;
1040 :
1041 104 : for (int i = 0; i < from->corank; i++)
1042 : {
1043 : /* Do not exceed the limits on lower[] and upper[]. gfortran
1044 : cleans up elsewhere. */
1045 71 : int k = from->rank + i;
1046 71 : int j = to->rank + i;
1047 71 : if (j >= GFC_MAX_DIMENSIONS)
1048 : break;
1049 :
1050 70 : if (copy)
1051 : {
1052 37 : to->lower[j] = gfc_copy_expr (from->lower[k]);
1053 37 : to->upper[j] = gfc_copy_expr (from->upper[k]);
1054 : }
1055 : else
1056 : {
1057 33 : to->lower[j] = from->lower[k];
1058 33 : to->upper[j] = from->upper[k];
1059 : }
1060 : }
1061 : }
1062 :
1063 109 : if (to->rank + to->corank > GFC_MAX_DIMENSIONS)
1064 : {
1065 1 : gfc_error ("Sum of array rank %d and corank %d at %C exceeds maximum "
1066 : "allowed dimensions of %d",
1067 : to->rank, to->corank, GFC_MAX_DIMENSIONS);
1068 1 : to->corank = GFC_MAX_DIMENSIONS - to->rank;
1069 1 : return false;
1070 : }
1071 : return true;
1072 : }
1073 :
1074 :
1075 : /* Match an intent specification. Since this can only happen after an
1076 : INTENT word, a legal intent-spec must follow. */
1077 :
1078 : static sym_intent
1079 28671 : match_intent_spec (void)
1080 : {
1081 :
1082 28671 : if (gfc_match (" ( in out )") == MATCH_YES)
1083 : return INTENT_INOUT;
1084 25460 : if (gfc_match (" ( in )") == MATCH_YES)
1085 : return INTENT_IN;
1086 3754 : if (gfc_match (" ( out )") == MATCH_YES)
1087 : return INTENT_OUT;
1088 :
1089 2 : gfc_error ("Bad INTENT specification at %C");
1090 2 : return INTENT_UNKNOWN;
1091 : }
1092 :
1093 :
1094 : /* Matches a character length specification, which is either a
1095 : specification expression, '*', or ':'. */
1096 :
1097 : static match
1098 28230 : char_len_param_value (gfc_expr **expr, bool *deferred)
1099 : {
1100 28230 : match m;
1101 28230 : gfc_expr *p;
1102 :
1103 28230 : *expr = NULL;
1104 28230 : *deferred = false;
1105 :
1106 28230 : if (gfc_match_char ('*') == MATCH_YES)
1107 : return MATCH_YES;
1108 :
1109 21644 : if (gfc_match_char (':') == MATCH_YES)
1110 : {
1111 3414 : if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C"))
1112 : return MATCH_ERROR;
1113 :
1114 3412 : *deferred = true;
1115 :
1116 3412 : return MATCH_YES;
1117 : }
1118 :
1119 18230 : m = gfc_match_expr (expr);
1120 :
1121 18230 : if (m == MATCH_NO || m == MATCH_ERROR)
1122 : return m;
1123 :
1124 18225 : if (!gfc_expr_check_typed (*expr, gfc_current_ns, false))
1125 : return MATCH_ERROR;
1126 :
1127 : /* Try to simplify the expression to catch things like CHARACTER(([1])). */
1128 18219 : p = gfc_copy_expr (*expr);
1129 18219 : if (gfc_is_constant_expr (p) && gfc_simplify_expr (p, 1))
1130 15055 : gfc_replace_expr (*expr, p);
1131 : else
1132 3164 : gfc_free_expr (p);
1133 :
1134 18219 : if ((*expr)->expr_type == EXPR_FUNCTION)
1135 : {
1136 1021 : if ((*expr)->ts.type == BT_INTEGER
1137 1020 : || ((*expr)->ts.type == BT_UNKNOWN
1138 1020 : && strcmp((*expr)->symtree->name, "null") != 0))
1139 : return MATCH_YES;
1140 :
1141 2 : goto syntax;
1142 : }
1143 17198 : else if ((*expr)->expr_type == EXPR_CONSTANT)
1144 : {
1145 : /* F2008, 4.4.3.1: The length is a type parameter; its kind is
1146 : processor dependent and its value is greater than or equal to zero.
1147 : F2008, 4.4.3.2: If the character length parameter value evaluates
1148 : to a negative value, the length of character entities declared
1149 : is zero. */
1150 :
1151 14965 : if ((*expr)->ts.type == BT_INTEGER)
1152 : {
1153 14947 : if (mpz_cmp_si ((*expr)->value.integer, 0) < 0)
1154 4 : mpz_set_si ((*expr)->value.integer, 0);
1155 : }
1156 : else
1157 18 : goto syntax;
1158 : }
1159 2233 : else if ((*expr)->expr_type == EXPR_ARRAY)
1160 8 : goto syntax;
1161 2225 : else if ((*expr)->expr_type == EXPR_VARIABLE)
1162 : {
1163 1576 : bool t;
1164 1576 : gfc_expr *e;
1165 :
1166 1576 : e = gfc_copy_expr (*expr);
1167 :
1168 : /* This catches the invalid code "[character(m(2:3)) :: 'x', 'y']",
1169 : which causes an ICE if gfc_reduce_init_expr() is called. */
1170 1576 : if (e->ref && e->ref->type == REF_ARRAY
1171 8 : && e->ref->u.ar.type == AR_UNKNOWN
1172 7 : && e->ref->u.ar.dimen_type[0] == DIMEN_RANGE)
1173 2 : goto syntax;
1174 :
1175 1574 : t = gfc_reduce_init_expr (e);
1176 :
1177 1574 : if (!t && e->ts.type == BT_UNKNOWN
1178 7 : && e->symtree->n.sym->attr.untyped == 1
1179 7 : && (flag_implicit_none
1180 5 : || e->symtree->n.sym->ns->seen_implicit_none == 1
1181 1 : || e->symtree->n.sym->ns->parent->seen_implicit_none == 1))
1182 : {
1183 7 : gfc_free_expr (e);
1184 7 : goto syntax;
1185 : }
1186 :
1187 1567 : if ((e->ref && e->ref->type == REF_ARRAY
1188 4 : && e->ref->u.ar.type != AR_ELEMENT)
1189 1566 : || (!e->ref && e->expr_type == EXPR_ARRAY))
1190 : {
1191 2 : gfc_free_expr (e);
1192 2 : goto syntax;
1193 : }
1194 :
1195 1565 : gfc_free_expr (e);
1196 : }
1197 :
1198 17161 : if (gfc_seen_div0)
1199 52 : m = MATCH_ERROR;
1200 :
1201 : return m;
1202 :
1203 39 : syntax:
1204 39 : gfc_error ("Scalar INTEGER expression expected at %L", &(*expr)->where);
1205 39 : return MATCH_ERROR;
1206 : }
1207 :
1208 :
1209 : /* A character length is a '*' followed by a literal integer or a
1210 : char_len_param_value in parenthesis. */
1211 :
1212 : static match
1213 63821 : match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check)
1214 : {
1215 63821 : int length;
1216 63821 : match m;
1217 :
1218 63821 : *deferred = false;
1219 63821 : m = gfc_match_char ('*');
1220 63821 : if (m != MATCH_YES)
1221 : return m;
1222 :
1223 2641 : m = gfc_match_small_literal_int (&length, NULL);
1224 2641 : if (m == MATCH_ERROR)
1225 : return m;
1226 :
1227 2641 : if (m == MATCH_YES)
1228 : {
1229 2137 : if (obsolescent_check
1230 2137 : && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C"))
1231 : return MATCH_ERROR;
1232 2137 : *expr = gfc_get_int_expr (gfc_charlen_int_kind, NULL, length);
1233 2137 : return m;
1234 : }
1235 :
1236 504 : if (gfc_match_char ('(') == MATCH_NO)
1237 0 : goto syntax;
1238 :
1239 504 : m = char_len_param_value (expr, deferred);
1240 504 : if (m != MATCH_YES && gfc_matching_function)
1241 : {
1242 0 : gfc_undo_symbols ();
1243 0 : m = MATCH_YES;
1244 : }
1245 :
1246 1 : if (m == MATCH_ERROR)
1247 : return m;
1248 503 : if (m == MATCH_NO)
1249 0 : goto syntax;
1250 :
1251 503 : if (gfc_match_char (')') == MATCH_NO)
1252 : {
1253 0 : gfc_free_expr (*expr);
1254 0 : *expr = NULL;
1255 0 : goto syntax;
1256 : }
1257 :
1258 503 : if (obsolescent_check
1259 503 : && !gfc_notify_std (GFC_STD_F95_OBS, "Old-style character length at %C"))
1260 0 : return MATCH_ERROR;
1261 :
1262 : return MATCH_YES;
1263 :
1264 0 : syntax:
1265 0 : gfc_error ("Syntax error in character length specification at %C");
1266 0 : return MATCH_ERROR;
1267 : }
1268 :
1269 :
1270 : /* Special subroutine for finding a symbol. Check if the name is found
1271 : in the current name space. If not, and we're compiling a function or
1272 : subroutine and the parent compilation unit is an interface, then check
1273 : to see if the name we've been given is the name of the interface
1274 : (located in another namespace). */
1275 :
1276 : static int
1277 288086 : find_special (const char *name, gfc_symbol **result, bool allow_subroutine)
1278 : {
1279 288086 : gfc_state_data *s;
1280 288086 : gfc_symtree *st;
1281 288086 : int i;
1282 :
1283 288086 : i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine);
1284 288086 : if (i == 0)
1285 : {
1286 288086 : *result = st ? st->n.sym : NULL;
1287 288086 : goto end;
1288 : }
1289 :
1290 0 : if (gfc_current_state () != COMP_SUBROUTINE
1291 0 : && gfc_current_state () != COMP_FUNCTION)
1292 0 : goto end;
1293 :
1294 0 : s = gfc_state_stack->previous;
1295 0 : if (s == NULL)
1296 0 : goto end;
1297 :
1298 0 : if (s->state != COMP_INTERFACE)
1299 0 : goto end;
1300 0 : if (s->sym == NULL)
1301 0 : goto end; /* Nameless interface. */
1302 :
1303 0 : if (strcmp (name, s->sym->name) == 0)
1304 : {
1305 0 : *result = s->sym;
1306 0 : return 0;
1307 : }
1308 :
1309 0 : end:
1310 : return i;
1311 : }
1312 :
1313 :
1314 : /* Special subroutine for getting a symbol node associated with a
1315 : procedure name, used in SUBROUTINE and FUNCTION statements. The
1316 : symbol is created in the parent using with symtree node in the
1317 : child unit pointing to the symbol. If the current namespace has no
1318 : parent, then the symbol is just created in the current unit. */
1319 :
1320 : static int
1321 65328 : get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry)
1322 : {
1323 65328 : gfc_symtree *st;
1324 65328 : gfc_symbol *sym;
1325 65328 : int rc = 0;
1326 :
1327 : /* Module functions have to be left in their own namespace because
1328 : they have potentially (almost certainly!) already been referenced.
1329 : In this sense, they are rather like external functions. This is
1330 : fixed up in resolve.cc(resolve_entries), where the symbol name-
1331 : space is set to point to the master function, so that the fake
1332 : result mechanism can work. */
1333 65328 : if (module_fcn_entry)
1334 : {
1335 : /* Present if entry is declared to be a module procedure. */
1336 260 : rc = gfc_find_symbol (name, gfc_current_ns->parent, 0, result);
1337 :
1338 260 : if (*result == NULL)
1339 217 : rc = gfc_get_symbol (name, NULL, result);
1340 86 : else if (!gfc_get_symbol (name, NULL, &sym) && sym
1341 43 : && (*result)->ts.type == BT_UNKNOWN
1342 86 : && sym->attr.flavor == FL_UNKNOWN)
1343 : /* Pick up the typespec for the entry, if declared in the function
1344 : body. Note that this symbol is FL_UNKNOWN because it will
1345 : only have appeared in a type declaration. The local symtree
1346 : is set to point to the module symbol and a unique symtree
1347 : to the local version. This latter ensures a correct clearing
1348 : of the symbols. */
1349 : {
1350 : /* If the ENTRY proceeds its specification, we need to ensure
1351 : that this does not raise a "has no IMPLICIT type" error. */
1352 43 : if (sym->ts.type == BT_UNKNOWN)
1353 23 : sym->attr.untyped = 1;
1354 :
1355 43 : (*result)->ts = sym->ts;
1356 :
1357 : /* Put the symbol in the procedure namespace so that, should
1358 : the ENTRY precede its specification, the specification
1359 : can be applied. */
1360 43 : (*result)->ns = gfc_current_ns;
1361 :
1362 43 : gfc_find_sym_tree (name, gfc_current_ns, 0, &st);
1363 43 : st->n.sym = *result;
1364 43 : st = gfc_get_unique_symtree (gfc_current_ns);
1365 43 : sym->refs++;
1366 43 : st->n.sym = sym;
1367 : }
1368 : }
1369 : else
1370 65068 : rc = gfc_get_symbol (name, gfc_current_ns->parent, result);
1371 :
1372 65328 : if (rc)
1373 : return rc;
1374 :
1375 65327 : sym = *result;
1376 65327 : if (sym->attr.proc == PROC_ST_FUNCTION)
1377 : return rc;
1378 :
1379 65326 : if (sym->attr.module_procedure && sym->attr.if_source == IFSRC_IFBODY)
1380 : {
1381 : /* Create a partially populated interface symbol to carry the
1382 : characteristics of the procedure and the result. */
1383 472 : sym->tlink = gfc_new_symbol (name, sym->ns);
1384 472 : gfc_add_type (sym->tlink, &(sym->ts), &gfc_current_locus);
1385 472 : gfc_copy_attr (&sym->tlink->attr, &sym->attr, NULL);
1386 472 : if (sym->attr.dimension)
1387 17 : sym->tlink->as = gfc_copy_array_spec (sym->as);
1388 :
1389 : /* Ideally, at this point, a copy would be made of the formal
1390 : arguments and their namespace. However, this does not appear
1391 : to be necessary, albeit at the expense of not being able to
1392 : use gfc_compare_interfaces directly. */
1393 :
1394 472 : if (sym->result && sym->result != sym)
1395 : {
1396 105 : sym->tlink->result = sym->result;
1397 105 : sym->result = NULL;
1398 : }
1399 367 : else if (sym->result)
1400 : {
1401 93 : sym->tlink->result = sym->tlink;
1402 : }
1403 : }
1404 64854 : else if (sym && !sym->gfc_new
1405 25070 : && gfc_current_state () != COMP_INTERFACE)
1406 : {
1407 : /* Trap another encompassed procedure with the same name. All
1408 : these conditions are necessary to avoid picking up an entry
1409 : whose name clashes with that of the encompassing procedure;
1410 : this is handled using gsymbols to register unique, globally
1411 : accessible names. */
1412 23735 : if (sym->attr.flavor != 0
1413 21652 : && sym->attr.proc != 0
1414 2404 : && (sym->attr.subroutine || sym->attr.function || sym->attr.entry)
1415 7 : && sym->attr.if_source != IFSRC_UNKNOWN)
1416 : {
1417 7 : gfc_error_now ("Procedure %qs at %C is already defined at %L",
1418 : name, &sym->declared_at);
1419 7 : return true;
1420 : }
1421 23728 : if (sym->attr.flavor != 0
1422 21645 : && sym->attr.entry && sym->attr.if_source != IFSRC_UNKNOWN)
1423 : {
1424 1 : gfc_error_now ("Procedure %qs at %C is already defined at %L",
1425 : name, &sym->declared_at);
1426 1 : return true;
1427 : }
1428 :
1429 23727 : if (sym->attr.external && sym->attr.procedure
1430 2 : && gfc_current_state () == COMP_CONTAINS)
1431 : {
1432 1 : gfc_error_now ("Contained procedure %qs at %C clashes with "
1433 : "procedure defined at %L",
1434 : name, &sym->declared_at);
1435 1 : return true;
1436 : }
1437 :
1438 : /* Trap a procedure with a name the same as interface in the
1439 : encompassing scope. */
1440 23726 : if (sym->attr.generic != 0
1441 60 : && (sym->attr.subroutine || sym->attr.function)
1442 1 : && !sym->attr.mod_proc)
1443 : {
1444 1 : gfc_error_now ("Name %qs at %C is already defined"
1445 : " as a generic interface at %L",
1446 : name, &sym->declared_at);
1447 1 : return true;
1448 : }
1449 :
1450 : /* Trap declarations of attributes in encompassing scope. The
1451 : signature for this is that ts.kind is nonzero for no-CLASS
1452 : entity. For a CLASS entity, ts.kind is zero. */
1453 23725 : if ((sym->ts.kind != 0
1454 23352 : || sym->ts.type == BT_CLASS
1455 23351 : || sym->ts.type == BT_DERIVED)
1456 397 : && !sym->attr.implicit_type
1457 396 : && sym->attr.proc == 0
1458 378 : && gfc_current_ns->parent != NULL
1459 138 : && sym->attr.access == 0
1460 136 : && !module_fcn_entry)
1461 : {
1462 5 : gfc_error_now ("Procedure %qs at %C has an explicit interface "
1463 : "from a previous declaration", name);
1464 5 : return true;
1465 : }
1466 : }
1467 :
1468 : /* F2023: C1247 (R1526) MODULE shall appear only in the function-stmt or
1469 : subroutine-stmt of a module subprogram or of a nonabstract interface
1470 : body that is declared in the scoping unit of a module or submodule. */
1471 65311 : if (sym->attr.external
1472 92 : && (sym->attr.subroutine || sym->attr.function)
1473 91 : && sym->attr.if_source == IFSRC_IFBODY
1474 91 : && !current_attr.module_procedure
1475 3 : && sym->attr.proc == PROC_MODULE
1476 3 : && gfc_state_stack->state == COMP_CONTAINS)
1477 1 : gfc_error_now ("Procedure %qs defined in interface body at %L "
1478 : "clashes with internal procedure defined at %C",
1479 : name, &sym->declared_at);
1480 :
1481 : /* This is the converse requirement: The separate-module-subprogram for a
1482 : module procedure shall have the MODULE prefix or be declared a MODULE
1483 : PROCEDURE, otherwise it would be ambiguous. */
1484 65311 : if (sym->attr.module_procedure
1485 472 : && (sym->attr.subroutine || sym->attr.function)
1486 472 : && sym->attr.if_source == IFSRC_IFBODY
1487 472 : && !current_attr.module_procedure
1488 4 : && sym->attr.proc == PROC_MODULE
1489 4 : && gfc_state_stack->state == COMP_CONTAINS
1490 2 : && gfc_state_stack->previous
1491 2 : && gfc_state_stack->previous->state == COMP_SUBMODULE)
1492 1 : gfc_error_now ("Procedure %qs at %C requires the MODULE prefix because "
1493 : "it is a module procedure declared in module %qs",
1494 1 : name, sym->module ? sym->module : "");
1495 :
1496 65311 : if (sym && !sym->gfc_new
1497 25527 : && sym->attr.flavor != FL_UNKNOWN
1498 23044 : && sym->attr.referenced == 0 && sym->attr.subroutine == 1
1499 244 : && gfc_state_stack->state == COMP_CONTAINS
1500 239 : && gfc_state_stack->previous->state == COMP_SUBROUTINE)
1501 : {
1502 1 : gfc_error_now ("Procedure %qs at %C is already defined at %L",
1503 : name, &sym->declared_at);
1504 1 : return true;
1505 : }
1506 :
1507 65310 : if (gfc_current_ns->parent == NULL || *result == NULL)
1508 : return rc;
1509 :
1510 : /* Module function entries will already have a symtree in
1511 : the current namespace but will need one at module level. */
1512 52964 : if (module_fcn_entry)
1513 : {
1514 : /* Present if entry is declared to be a module procedure. */
1515 258 : rc = gfc_find_sym_tree (name, gfc_current_ns->parent, 0, &st);
1516 258 : if (st == NULL)
1517 217 : st = gfc_new_symtree (&gfc_current_ns->parent->sym_root, name);
1518 : }
1519 : else
1520 52706 : st = gfc_new_symtree (&gfc_current_ns->sym_root, name);
1521 :
1522 52964 : st->n.sym = sym;
1523 52964 : sym->refs++;
1524 :
1525 : /* See if the procedure should be a module procedure. */
1526 :
1527 52964 : if (((sym->ns->proc_name != NULL
1528 52964 : && sym->ns->proc_name->attr.flavor == FL_MODULE
1529 21556 : && sym->attr.proc != PROC_MODULE)
1530 52964 : || (module_fcn_entry && sym->attr.proc != PROC_MODULE))
1531 71673 : && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL))
1532 : rc = 2;
1533 :
1534 : return rc;
1535 : }
1536 :
1537 :
1538 : /* Verify that the given symbol representing a parameter is C
1539 : interoperable, by checking to see if it was marked as such after
1540 : its declaration. If the given symbol is not interoperable, a
1541 : warning is reported, thus removing the need to return the status to
1542 : the calling function. The standard does not require the user use
1543 : one of the iso_c_binding named constants to declare an
1544 : interoperable parameter, but we can't be sure if the param is C
1545 : interop or not if the user doesn't. For example, integer(4) may be
1546 : legal Fortran, but doesn't have meaning in C. It may interop with
1547 : a number of the C types, which causes a problem because the
1548 : compiler can't know which one. This code is almost certainly not
1549 : portable, and the user will get what they deserve if the C type
1550 : across platforms isn't always interoperable with integer(4). If
1551 : the user had used something like integer(c_int) or integer(c_long),
1552 : the compiler could have automatically handled the varying sizes
1553 : across platforms. */
1554 :
1555 : bool
1556 17318 : gfc_verify_c_interop_param (gfc_symbol *sym)
1557 : {
1558 17318 : int is_c_interop = 0;
1559 17318 : bool retval = true;
1560 :
1561 : /* We check implicitly typed variables in symbol.cc:gfc_set_default_type().
1562 : Don't repeat the checks here. */
1563 17318 : if (sym->attr.implicit_type)
1564 : return true;
1565 :
1566 : /* For subroutines or functions that are passed to a BIND(C) procedure,
1567 : they're interoperable if they're BIND(C) and their params are all
1568 : interoperable. */
1569 17318 : if (sym->attr.flavor == FL_PROCEDURE)
1570 : {
1571 4 : if (sym->attr.is_bind_c == 0)
1572 : {
1573 0 : gfc_error_now ("Procedure %qs at %L must have the BIND(C) "
1574 : "attribute to be C interoperable", sym->name,
1575 : &(sym->declared_at));
1576 0 : return false;
1577 : }
1578 : else
1579 : {
1580 4 : if (sym->attr.is_c_interop == 1)
1581 : /* We've already checked this procedure; don't check it again. */
1582 : return true;
1583 : else
1584 4 : return verify_bind_c_sym (sym, &(sym->ts), sym->attr.in_common,
1585 4 : sym->common_block);
1586 : }
1587 : }
1588 :
1589 : /* See if we've stored a reference to a procedure that owns sym. */
1590 17314 : if (sym->ns != NULL && sym->ns->proc_name != NULL)
1591 : {
1592 17314 : if (sym->ns->proc_name->attr.is_bind_c == 1)
1593 : {
1594 17275 : bool f2018_allowed = gfc_option.allow_std & ~GFC_STD_OPT_F08;
1595 17275 : bool f2018_added = false;
1596 :
1597 17275 : is_c_interop = (gfc_verify_c_interop(&(sym->ts)) ? 1 : 0);
1598 :
1599 : /* F2018:18.3.6 has the following text:
1600 : "(5) any dummy argument without the VALUE attribute corresponds to
1601 : a formal parameter of the prototype that is of a pointer type, and
1602 : either
1603 : • the dummy argument is interoperable with an entity of the
1604 : referenced type (ISO/IEC 9899:2011, 6.2.5, 7.19, and 7.20.1) of
1605 : the formal parameter (this is equivalent to the F2008 text),
1606 : • the dummy argument is a nonallocatable nonpointer variable of
1607 : type CHARACTER with assumed character length and the formal
1608 : parameter is a pointer to CFI_cdesc_t,
1609 : • the dummy argument is allocatable, assumed-shape, assumed-rank,
1610 : or a pointer without the CONTIGUOUS attribute, and the formal
1611 : parameter is a pointer to CFI_cdesc_t, or
1612 : • the dummy argument is assumed-type and not allocatable,
1613 : assumed-shape, assumed-rank, or a pointer, and the formal
1614 : parameter is a pointer to void," */
1615 3731 : if (is_c_interop == 0 && !sym->attr.value && f2018_allowed)
1616 : {
1617 2364 : bool as_ar = (sym->as
1618 2364 : && (sym->as->type == AS_ASSUMED_SHAPE
1619 2117 : || sym->as->type == AS_ASSUMED_RANK));
1620 4728 : bool cond1 = (sym->ts.type == BT_CHARACTER
1621 1565 : && !(sym->ts.u.cl && sym->ts.u.cl->length)
1622 905 : && !sym->attr.allocatable
1623 3251 : && !sym->attr.pointer);
1624 4728 : bool cond2 = (sym->attr.allocatable
1625 2267 : || as_ar
1626 3389 : || (IS_POINTER (sym) && !sym->attr.contiguous));
1627 4728 : bool cond3 = (sym->ts.type == BT_ASSUMED
1628 0 : && !sym->attr.allocatable
1629 0 : && !sym->attr.pointer
1630 2364 : && !as_ar);
1631 2364 : f2018_added = cond1 || cond2 || cond3;
1632 : }
1633 :
1634 17275 : if (is_c_interop != 1 && !f2018_added)
1635 : {
1636 : /* Make personalized messages to give better feedback. */
1637 1837 : if (sym->ts.type == BT_DERIVED)
1638 1 : gfc_error ("Variable %qs at %L is a dummy argument to the "
1639 : "BIND(C) procedure %qs but is not C interoperable "
1640 : "because derived type %qs is not C interoperable",
1641 : sym->name, &(sym->declared_at),
1642 1 : sym->ns->proc_name->name,
1643 1 : sym->ts.u.derived->name);
1644 1836 : else if (sym->ts.type == BT_CLASS)
1645 6 : gfc_error ("Variable %qs at %L is a dummy argument to the "
1646 : "BIND(C) procedure %qs but is not C interoperable "
1647 : "because it is polymorphic",
1648 : sym->name, &(sym->declared_at),
1649 6 : sym->ns->proc_name->name);
1650 1830 : else if (warn_c_binding_type)
1651 39 : gfc_warning (OPT_Wc_binding_type,
1652 : "Variable %qs at %L is a dummy argument of the "
1653 : "BIND(C) procedure %qs but may not be C "
1654 : "interoperable",
1655 : sym->name, &(sym->declared_at),
1656 39 : sym->ns->proc_name->name);
1657 : }
1658 :
1659 : /* Per F2018, 18.3.6 (5), pointer + contiguous is not permitted. */
1660 17275 : if (sym->attr.pointer && sym->attr.contiguous)
1661 2 : gfc_error ("Dummy argument %qs at %L may not be a pointer with "
1662 : "CONTIGUOUS attribute as procedure %qs is BIND(C)",
1663 2 : sym->name, &sym->declared_at, sym->ns->proc_name->name);
1664 :
1665 : /* Per F2018, C1557, pointer/allocatable dummies to a bind(c)
1666 : procedure that are default-initialized are not permitted. */
1667 16635 : if ((sym->attr.pointer || sym->attr.allocatable)
1668 1041 : && sym->ts.type == BT_DERIVED
1669 17653 : && gfc_has_default_initializer (sym->ts.u.derived))
1670 : {
1671 8 : gfc_error ("Default-initialized dummy argument %qs with %s "
1672 : "attribute at %L is not permitted in BIND(C) "
1673 : "procedure %qs", sym->name,
1674 4 : (sym->attr.pointer ? "POINTER" : "ALLOCATABLE"),
1675 4 : &sym->declared_at, sym->ns->proc_name->name);
1676 4 : retval = false;
1677 : }
1678 :
1679 : /* Character strings are only C interoperable if they have a
1680 : length of 1. However, as an argument they are also interoperable
1681 : when passed as descriptor (which requires len=: or len=*). */
1682 17275 : if (sym->ts.type == BT_CHARACTER)
1683 : {
1684 2344 : gfc_charlen *cl = sym->ts.u.cl;
1685 :
1686 2344 : if (sym->attr.allocatable || sym->attr.pointer)
1687 : {
1688 : /* F2018, 18.3.6 (6). */
1689 195 : if (!sym->ts.deferred)
1690 : {
1691 64 : if (sym->attr.allocatable)
1692 32 : gfc_error ("Allocatable character dummy argument %qs "
1693 : "at %L must have deferred length as "
1694 : "procedure %qs is BIND(C)", sym->name,
1695 32 : &sym->declared_at, sym->ns->proc_name->name);
1696 : else
1697 32 : gfc_error ("Pointer character dummy argument %qs at %L "
1698 : "must have deferred length as procedure %qs "
1699 : "is BIND(C)", sym->name, &sym->declared_at,
1700 32 : sym->ns->proc_name->name);
1701 : retval = false;
1702 : }
1703 131 : else if (!gfc_notify_std (GFC_STD_F2018,
1704 : "Deferred-length character dummy "
1705 : "argument %qs at %L of procedure "
1706 : "%qs with BIND(C) attribute",
1707 : sym->name, &sym->declared_at,
1708 131 : sym->ns->proc_name->name))
1709 17275 : retval = false;
1710 : }
1711 2149 : else if (sym->attr.value
1712 354 : && (!cl || !cl->length
1713 354 : || cl->length->expr_type != EXPR_CONSTANT
1714 354 : || mpz_cmp_si (cl->length->value.integer, 1) != 0))
1715 : {
1716 1 : gfc_error ("Character dummy argument %qs at %L must be "
1717 : "of length 1 as it has the VALUE attribute",
1718 : sym->name, &sym->declared_at);
1719 1 : retval = false;
1720 : }
1721 2148 : else if (!cl || !cl->length)
1722 : {
1723 : /* Assumed length; F2018, 18.3.6 (5)(2).
1724 : Uses the CFI array descriptor - also for scalars and
1725 : explicit-size/assumed-size arrays. */
1726 959 : if (!gfc_notify_std (GFC_STD_F2018,
1727 : "Assumed-length character dummy argument "
1728 : "%qs at %L of procedure %qs with BIND(C) "
1729 : "attribute", sym->name, &sym->declared_at,
1730 959 : sym->ns->proc_name->name))
1731 17275 : retval = false;
1732 : }
1733 1189 : else if (cl->length->expr_type != EXPR_CONSTANT
1734 875 : || mpz_cmp_si (cl->length->value.integer, 1) != 0)
1735 : {
1736 : /* F2018, 18.3.6, (5), item 4. */
1737 653 : if (!sym->attr.dimension
1738 645 : || sym->as->type == AS_ASSUMED_SIZE
1739 639 : || sym->as->type == AS_EXPLICIT)
1740 : {
1741 20 : gfc_error ("Character dummy argument %qs at %L must be "
1742 : "of constant length of one or assumed length, "
1743 : "unless it has assumed shape or assumed rank, "
1744 : "as procedure %qs has the BIND(C) attribute",
1745 : sym->name, &sym->declared_at,
1746 20 : sym->ns->proc_name->name);
1747 20 : retval = false;
1748 : }
1749 : /* else: valid only since F2018 - and an assumed-shape/rank
1750 : array; however, gfc_notify_std is already called when
1751 : those array types are used. Thus, silently accept F200x. */
1752 : }
1753 : }
1754 :
1755 : /* We have to make sure that any param to a bind(c) routine does
1756 : not have the allocatable, pointer, or optional attributes,
1757 : according to J3/04-007, section 5.1. */
1758 17275 : if (sym->attr.allocatable == 1
1759 17676 : && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with "
1760 : "ALLOCATABLE attribute in procedure %qs "
1761 : "with BIND(C)", sym->name,
1762 : &(sym->declared_at),
1763 401 : sym->ns->proc_name->name))
1764 : retval = false;
1765 :
1766 17275 : if (sym->attr.pointer == 1
1767 17915 : && !gfc_notify_std (GFC_STD_F2018, "Variable %qs at %L with "
1768 : "POINTER attribute in procedure %qs "
1769 : "with BIND(C)", sym->name,
1770 : &(sym->declared_at),
1771 640 : sym->ns->proc_name->name))
1772 : retval = false;
1773 :
1774 17275 : if (sym->attr.optional == 1 && sym->attr.value)
1775 : {
1776 9 : gfc_error ("Variable %qs at %L cannot have both the OPTIONAL "
1777 : "and the VALUE attribute because procedure %qs "
1778 : "is BIND(C)", sym->name, &(sym->declared_at),
1779 9 : sym->ns->proc_name->name);
1780 9 : retval = false;
1781 : }
1782 17266 : else if (sym->attr.optional == 1
1783 18220 : && !gfc_notify_std (GFC_STD_F2018, "Variable %qs "
1784 : "at %L with OPTIONAL attribute in "
1785 : "procedure %qs which is BIND(C)",
1786 : sym->name, &(sym->declared_at),
1787 954 : sym->ns->proc_name->name))
1788 : retval = false;
1789 :
1790 : /* Make sure that if it has the dimension attribute, that it is
1791 : either assumed size or explicit shape. Deferred shape is already
1792 : covered by the pointer/allocatable attribute. */
1793 5553 : if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE
1794 18609 : && !gfc_notify_std (GFC_STD_F2018, "Assumed-shape array %qs "
1795 : "at %L as dummy argument to the BIND(C) "
1796 : "procedure %qs at %L", sym->name,
1797 : &(sym->declared_at),
1798 : sym->ns->proc_name->name,
1799 1334 : &(sym->ns->proc_name->declared_at)))
1800 : retval = false;
1801 : }
1802 : }
1803 :
1804 : return retval;
1805 : }
1806 :
1807 :
1808 :
1809 : /* Function called by variable_decl() that adds a name to the symbol table. */
1810 :
1811 : static bool
1812 266309 : build_sym (const char *name, int elem, gfc_charlen *cl, bool cl_deferred,
1813 : gfc_array_spec **as, locus *var_locus)
1814 : {
1815 266309 : symbol_attribute attr;
1816 266309 : gfc_symbol *sym;
1817 266309 : int upper;
1818 266309 : gfc_symtree *st, *host_st = NULL;
1819 :
1820 : /* Symbols in a submodule are host associated from the parent module or
1821 : submodules. Therefore, they can be overridden by declarations in the
1822 : submodule scope. Deal with this by attaching the existing symbol to
1823 : a new symtree and recycling the old symtree with a new symbol... */
1824 266309 : st = gfc_find_symtree (gfc_current_ns->sym_root, name);
1825 266309 : if (((st && st->import_only) || (gfc_current_ns->import_state == IMPORT_ALL))
1826 3 : && gfc_current_ns->parent)
1827 3 : host_st = gfc_find_symtree (gfc_current_ns->parent->sym_root, name);
1828 :
1829 266309 : if (st != NULL && gfc_state_stack->state == COMP_SUBMODULE
1830 12 : && st->n.sym != NULL
1831 12 : && st->n.sym->attr.host_assoc && st->n.sym->attr.used_in_submodule)
1832 : {
1833 12 : gfc_symtree *s = gfc_get_unique_symtree (gfc_current_ns);
1834 12 : s->n.sym = st->n.sym;
1835 12 : sym = gfc_new_symbol (name, gfc_current_ns, var_locus);
1836 :
1837 12 : st->n.sym = sym;
1838 12 : sym->refs++;
1839 12 : gfc_set_sym_referenced (sym);
1840 12 : }
1841 : /* ...Check that F2018 IMPORT, ONLY and IMPORT, ALL statements, within the
1842 : current scope are not violated by local redeclarations. Note that there is
1843 : no need to guard for std >= F2018 because import_only and IMPORT_ALL are
1844 : only set for these standards. */
1845 266297 : else if (host_st && host_st->n.sym
1846 2 : && host_st->n.sym != gfc_current_ns->proc_name
1847 2 : && !(st && st->n.sym
1848 1 : && (st->n.sym->attr.dummy || st->n.sym->attr.result)))
1849 : {
1850 2 : gfc_error ("F2018: C8102 %s at %L is already imported by an %s "
1851 : "statement and must not be re-declared", name, var_locus,
1852 1 : (st && st->import_only) ? "IMPORT, ONLY" : "IMPORT, ALL");
1853 2 : return false;
1854 : }
1855 : /* ...Otherwise generate a new symtree and new symbol. */
1856 266295 : else if (gfc_get_symbol (name, NULL, &sym, var_locus))
1857 : return false;
1858 :
1859 : /* Check if the name has already been defined as a type. The
1860 : first letter of the symtree will be in upper case then. Of
1861 : course, this is only necessary if the upper case letter is
1862 : actually different. */
1863 :
1864 266307 : upper = TOUPPER(name[0]);
1865 266307 : if (upper != name[0])
1866 : {
1867 265557 : char u_name[GFC_MAX_SYMBOL_LEN + 1];
1868 265557 : gfc_symtree *st;
1869 :
1870 265557 : gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN);
1871 265557 : strcpy (u_name, name);
1872 265557 : u_name[0] = upper;
1873 :
1874 265557 : st = gfc_find_symtree (gfc_current_ns->sym_root, u_name);
1875 :
1876 : /* STRUCTURE types can alias symbol names */
1877 265557 : if (st != 0 && st->n.sym->attr.flavor != FL_STRUCT)
1878 : {
1879 1 : gfc_error ("Symbol %qs at %C also declared as a type at %L", name,
1880 : &st->n.sym->declared_at);
1881 1 : return false;
1882 : }
1883 : }
1884 :
1885 : /* Start updating the symbol table. Add basic type attribute if present. */
1886 266306 : if (current_ts.type != BT_UNKNOWN
1887 266306 : && (sym->attr.implicit_type == 0
1888 186 : || !gfc_compare_types (&sym->ts, ¤t_ts))
1889 532430 : && !gfc_add_type (sym, ¤t_ts, var_locus))
1890 : {
1891 : /* Duplicate-type rejection can leave a fresh CHARACTER length node on
1892 : the namespace list before it is attached to any surviving symbol.
1893 : Drop only that unattached node; shared constant charlen nodes are
1894 : already reachable from earlier declarations. PR82721. */
1895 27 : if (current_ts.type == BT_CHARACTER && cl && elem == 1)
1896 : {
1897 1 : discard_pending_charlen (cl);
1898 1 : gfc_clear_ts (¤t_ts);
1899 : }
1900 26 : else if (current_ts.type == BT_CHARACTER && cl && cl != current_ts.u.cl)
1901 0 : discard_pending_charlen (cl);
1902 : return false;
1903 : }
1904 :
1905 266279 : if (sym->ts.type == BT_CHARACTER)
1906 : {
1907 29345 : if (elem > 1)
1908 4166 : sym->ts.u.cl = gfc_new_charlen (sym->ns, cl);
1909 : else
1910 : sym->ts.u.cl = cl;
1911 29345 : sym->ts.deferred = cl_deferred;
1912 : }
1913 :
1914 : /* Add dimension attribute if present. */
1915 266279 : if (!gfc_set_array_spec (sym, *as, var_locus))
1916 : return false;
1917 266277 : *as = NULL;
1918 :
1919 : /* Add attribute to symbol. The copy is so that we can reset the
1920 : dimension attribute. */
1921 266277 : attr = current_attr;
1922 266277 : attr.dimension = 0;
1923 266277 : attr.codimension = 0;
1924 :
1925 266277 : if (!gfc_copy_attr (&sym->attr, &attr, var_locus))
1926 : return false;
1927 :
1928 : /* Finish any work that may need to be done for the binding label,
1929 : if it's a bind(c). The bind(c) attr is found before the symbol
1930 : is made, and before the symbol name (for data decls), so the
1931 : current_ts is holding the binding label, or nothing if the
1932 : name= attr wasn't given. Therefore, test here if we're dealing
1933 : with a bind(c) and make sure the binding label is set correctly. */
1934 266265 : if (sym->attr.is_bind_c == 1)
1935 : {
1936 1788 : if (!sym->binding_label)
1937 : {
1938 : /* Set the binding label and verify that if a NAME= was specified
1939 : then only one identifier was in the entity-decl-list. */
1940 137 : if (!set_binding_label (&sym->binding_label, sym->name,
1941 : num_idents_on_line))
1942 : return false;
1943 : }
1944 : }
1945 :
1946 : /* See if we know we're in a common block, and if it's a bind(c)
1947 : common then we need to make sure we're an interoperable type. */
1948 266263 : if (sym->attr.in_common == 1)
1949 : {
1950 : /* Test the common block object. */
1951 614 : if (sym->common_block != NULL && sym->common_block->is_bind_c == 1
1952 6 : && sym->ts.is_c_interop != 1)
1953 : {
1954 0 : gfc_error_now ("Variable %qs in common block %qs at %C "
1955 : "must be declared with a C interoperable "
1956 : "kind since common block %qs is BIND(C)",
1957 : sym->name, sym->common_block->name,
1958 0 : sym->common_block->name);
1959 0 : gfc_clear_error ();
1960 : }
1961 : }
1962 :
1963 266263 : sym->attr.implied_index = 0;
1964 :
1965 : /* Use the parameter expressions for a parameterized derived type. */
1966 266263 : if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS)
1967 37885 : && sym->ts.u.derived->attr.pdt_type && type_param_spec_list)
1968 1206 : sym->param_list = gfc_copy_actual_arglist (type_param_spec_list);
1969 :
1970 266263 : if (sym->ts.type == BT_CLASS)
1971 11414 : return gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as);
1972 :
1973 : return true;
1974 : }
1975 :
1976 :
1977 : /* Set character constant to the given length. The constant will be padded or
1978 : truncated. If we're inside an array constructor without a typespec, we
1979 : additionally check that all elements have the same length; check_len -1
1980 : means no checking. */
1981 :
1982 : void
1983 14589 : gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr,
1984 : gfc_charlen_t check_len)
1985 : {
1986 14589 : gfc_char_t *s;
1987 14589 : gfc_charlen_t slen;
1988 :
1989 14589 : if (expr->ts.type != BT_CHARACTER)
1990 : return;
1991 :
1992 14587 : if (expr->expr_type != EXPR_CONSTANT)
1993 : {
1994 1 : gfc_error_now ("CHARACTER length must be a constant at %L", &expr->where);
1995 1 : return;
1996 : }
1997 :
1998 14586 : slen = expr->value.character.length;
1999 14586 : if (len != slen)
2000 : {
2001 2178 : s = gfc_get_wide_string (len + 1);
2002 2178 : memcpy (s, expr->value.character.string,
2003 2178 : MIN (len, slen) * sizeof (gfc_char_t));
2004 2178 : if (len > slen)
2005 1887 : gfc_wide_memset (&s[slen], ' ', len - slen);
2006 :
2007 2178 : if (warn_character_truncation && slen > len)
2008 1 : gfc_warning_now (OPT_Wcharacter_truncation,
2009 : "CHARACTER expression at %L is being truncated "
2010 : "(%ld/%ld)", &expr->where,
2011 : (long) slen, (long) len);
2012 :
2013 : /* Apply the standard by 'hand' otherwise it gets cleared for
2014 : initializers. */
2015 2178 : if (check_len != -1 && slen != check_len)
2016 : {
2017 3 : if (!(gfc_option.allow_std & GFC_STD_GNU))
2018 0 : gfc_error_now ("The CHARACTER elements of the array constructor "
2019 : "at %L must have the same length (%ld/%ld)",
2020 : &expr->where, (long) slen,
2021 : (long) check_len);
2022 : else
2023 3 : gfc_notify_std (GFC_STD_LEGACY,
2024 : "The CHARACTER elements of the array constructor "
2025 : "at %L must have the same length (%ld/%ld)",
2026 : &expr->where, (long) slen,
2027 : (long) check_len);
2028 : }
2029 :
2030 2178 : s[len] = '\0';
2031 2178 : free (expr->value.character.string);
2032 2178 : expr->value.character.string = s;
2033 2178 : expr->value.character.length = len;
2034 : /* If explicit representation was given, clear it
2035 : as it is no longer needed after padding. */
2036 2178 : if (expr->representation.length)
2037 : {
2038 45 : expr->representation.length = 0;
2039 45 : free (expr->representation.string);
2040 45 : expr->representation.string = NULL;
2041 : }
2042 : }
2043 : }
2044 :
2045 :
2046 : /* Function to create and update the enumerator history
2047 : using the information passed as arguments.
2048 : Pointer "max_enum" is also updated, to point to
2049 : enum history node containing largest initializer.
2050 :
2051 : SYM points to the symbol node of enumerator.
2052 : INIT points to its enumerator value. */
2053 :
2054 : static void
2055 543 : create_enum_history (gfc_symbol *sym, gfc_expr *init)
2056 : {
2057 543 : enumerator_history *new_enum_history;
2058 543 : gcc_assert (sym != NULL && init != NULL);
2059 :
2060 543 : new_enum_history = XCNEW (enumerator_history);
2061 :
2062 543 : new_enum_history->sym = sym;
2063 543 : new_enum_history->initializer = init;
2064 543 : new_enum_history->next = NULL;
2065 :
2066 543 : if (enum_history == NULL)
2067 : {
2068 160 : enum_history = new_enum_history;
2069 160 : max_enum = enum_history;
2070 : }
2071 : else
2072 : {
2073 383 : new_enum_history->next = enum_history;
2074 383 : enum_history = new_enum_history;
2075 :
2076 383 : if (mpz_cmp (max_enum->initializer->value.integer,
2077 383 : new_enum_history->initializer->value.integer) < 0)
2078 381 : max_enum = new_enum_history;
2079 : }
2080 543 : }
2081 :
2082 :
2083 : /* Function to free enum kind history. */
2084 :
2085 : void
2086 175 : gfc_free_enum_history (void)
2087 : {
2088 175 : enumerator_history *current = enum_history;
2089 175 : enumerator_history *next;
2090 :
2091 718 : while (current != NULL)
2092 : {
2093 543 : next = current->next;
2094 543 : free (current);
2095 543 : current = next;
2096 : }
2097 175 : max_enum = NULL;
2098 175 : enum_history = NULL;
2099 175 : }
2100 :
2101 :
2102 : /* Function to fix initializer character length if the length of the
2103 : symbol or component is constant. */
2104 :
2105 : static bool
2106 2777 : fix_initializer_charlen (gfc_typespec *ts, gfc_expr *init)
2107 : {
2108 2777 : if (!gfc_specification_expr (ts->u.cl->length))
2109 : return false;
2110 :
2111 2777 : int k = gfc_validate_kind (BT_INTEGER, gfc_charlen_int_kind, false);
2112 :
2113 : /* resolve_charlen will complain later on if the length
2114 : is too large. Just skip the initialization in that case. */
2115 2777 : if (mpz_cmp (ts->u.cl->length->value.integer,
2116 2777 : gfc_integer_kinds[k].huge) <= 0)
2117 : {
2118 2776 : HOST_WIDE_INT len
2119 2776 : = gfc_mpz_get_hwi (ts->u.cl->length->value.integer);
2120 :
2121 2776 : if (init->expr_type == EXPR_CONSTANT)
2122 2012 : gfc_set_constant_character_len (len, init, -1);
2123 764 : else if (init->expr_type == EXPR_ARRAY)
2124 : {
2125 757 : gfc_constructor *cons;
2126 :
2127 : /* Build a new charlen to prevent simplification from
2128 : deleting the length before it is resolved. */
2129 757 : init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
2130 757 : init->ts.u.cl->length = gfc_copy_expr (ts->u.cl->length);
2131 757 : cons = gfc_constructor_first (init->value.constructor);
2132 5121 : for (; cons; cons = gfc_constructor_next (cons))
2133 3607 : gfc_set_constant_character_len (len, cons->expr, -1);
2134 : }
2135 : }
2136 :
2137 : return true;
2138 : }
2139 :
2140 :
2141 : /* Function called by variable_decl() that adds an initialization
2142 : expression to a symbol. */
2143 :
2144 : static bool
2145 274660 : add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus,
2146 : gfc_charlen *saved_cl_list)
2147 : {
2148 274660 : symbol_attribute attr;
2149 274660 : gfc_symbol *sym;
2150 274660 : gfc_expr *init;
2151 :
2152 274660 : init = *initp;
2153 274660 : if (find_special (name, &sym, false))
2154 : return false;
2155 :
2156 274660 : attr = sym->attr;
2157 :
2158 : /* If this symbol is confirming an implicit parameter type,
2159 : then an initialization expression is not allowed. */
2160 274660 : if (attr.flavor == FL_PARAMETER && sym->value != NULL)
2161 : {
2162 1 : if (*initp != NULL)
2163 : {
2164 0 : gfc_error ("Initializer not allowed for PARAMETER %qs at %C",
2165 : sym->name);
2166 0 : return false;
2167 : }
2168 : else
2169 : return true;
2170 : }
2171 :
2172 274659 : if (init == NULL)
2173 : {
2174 : /* An initializer is required for PARAMETER declarations. */
2175 240989 : if (attr.flavor == FL_PARAMETER)
2176 : {
2177 1 : gfc_error ("PARAMETER at %L is missing an initializer", var_locus);
2178 1 : return false;
2179 : }
2180 : }
2181 : else
2182 : {
2183 : /* If a variable appears in a DATA block, it cannot have an
2184 : initializer. */
2185 33670 : if (sym->attr.data)
2186 : {
2187 0 : gfc_error ("Variable %qs at %C with an initializer already "
2188 : "appears in a DATA statement", sym->name);
2189 0 : return false;
2190 : }
2191 :
2192 : /* Check if the assignment can happen. This has to be put off
2193 : until later for derived type variables and procedure pointers. */
2194 32483 : if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type)
2195 32460 : && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS
2196 32410 : && !sym->attr.proc_pointer
2197 65971 : && !gfc_check_assign_symbol (sym, NULL, init))
2198 : return false;
2199 :
2200 33639 : if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl
2201 3476 : && init->ts.type == BT_CHARACTER)
2202 : {
2203 : /* Update symbol character length according initializer. */
2204 3312 : if (!gfc_check_assign_symbol (sym, NULL, init))
2205 : return false;
2206 :
2207 3312 : if (sym->ts.u.cl->length == NULL)
2208 : {
2209 863 : gfc_charlen_t clen;
2210 : /* If there are multiple CHARACTER variables declared on the
2211 : same line, we don't want them to share the same length. */
2212 863 : sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
2213 :
2214 863 : if (sym->attr.flavor == FL_PARAMETER)
2215 : {
2216 854 : if (init->expr_type == EXPR_CONSTANT)
2217 : {
2218 563 : clen = init->value.character.length;
2219 563 : sym->ts.u.cl->length
2220 563 : = gfc_get_int_expr (gfc_charlen_int_kind,
2221 : NULL, clen);
2222 : }
2223 291 : else if (init->expr_type == EXPR_ARRAY)
2224 : {
2225 291 : if (init->ts.u.cl && init->ts.u.cl->length)
2226 : {
2227 279 : const gfc_expr *length = init->ts.u.cl->length;
2228 279 : if (length->expr_type != EXPR_CONSTANT)
2229 : {
2230 3 : gfc_error ("Cannot initialize parameter array "
2231 : "at %L "
2232 : "with variable length elements",
2233 : &sym->declared_at);
2234 :
2235 : /* This rejection path can leave several
2236 : declaration-local charlens on cl_list,
2237 : including the replacement symbol charlen and
2238 : the array-constructor typespec charlen.
2239 : Clear the surviving owners first, then drop
2240 : only the nodes created by this declaration. */
2241 3 : sym->ts.u.cl = NULL;
2242 3 : init->ts.u.cl = NULL;
2243 3 : discard_pending_charlens (saved_cl_list);
2244 3 : return false;
2245 : }
2246 276 : clen = mpz_get_si (length->value.integer);
2247 276 : }
2248 12 : else if (init->value.constructor)
2249 : {
2250 12 : gfc_constructor *c;
2251 12 : c = gfc_constructor_first (init->value.constructor);
2252 12 : clen = c->expr->value.character.length;
2253 : }
2254 : else
2255 0 : gcc_unreachable ();
2256 288 : sym->ts.u.cl->length
2257 288 : = gfc_get_int_expr (gfc_charlen_int_kind,
2258 : NULL, clen);
2259 : }
2260 0 : else if (init->ts.u.cl && init->ts.u.cl->length)
2261 0 : sym->ts.u.cl->length =
2262 0 : gfc_copy_expr (init->ts.u.cl->length);
2263 : }
2264 : }
2265 : /* Update initializer character length according to symbol. */
2266 2449 : else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT
2267 2449 : && !fix_initializer_charlen (&sym->ts, init))
2268 : return false;
2269 : }
2270 :
2271 33636 : if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension && sym->as
2272 3814 : && sym->as->rank && init->rank && init->rank != sym->as->rank)
2273 : {
2274 3 : gfc_error ("Rank mismatch of array at %L and its initializer "
2275 : "(%d/%d)", &sym->declared_at, sym->as->rank, init->rank);
2276 3 : return false;
2277 : }
2278 :
2279 : /* If sym is implied-shape, set its upper bounds from init. */
2280 33633 : if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension
2281 3811 : && sym->as && sym->as->type == AS_IMPLIED_SHAPE)
2282 : {
2283 1041 : int dim;
2284 :
2285 1041 : if (init->rank == 0)
2286 : {
2287 1 : gfc_error ("Cannot initialize implied-shape array at %L"
2288 : " with scalar", &sym->declared_at);
2289 1 : return false;
2290 : }
2291 :
2292 : /* The shape may be NULL for EXPR_ARRAY, set it. */
2293 1040 : if (init->shape == NULL)
2294 : {
2295 5 : if (init->expr_type != EXPR_ARRAY)
2296 : {
2297 2 : gfc_error ("Bad shape of initializer at %L", &init->where);
2298 2 : return false;
2299 : }
2300 :
2301 3 : init->shape = gfc_get_shape (1);
2302 3 : if (!gfc_array_size (init, &init->shape[0]))
2303 : {
2304 1 : gfc_error ("Cannot determine shape of initializer at %L",
2305 : &init->where);
2306 1 : free (init->shape);
2307 1 : init->shape = NULL;
2308 1 : return false;
2309 : }
2310 : }
2311 :
2312 2175 : for (dim = 0; dim < sym->as->rank; ++dim)
2313 : {
2314 1139 : int k;
2315 1139 : gfc_expr *e, *lower;
2316 :
2317 1139 : lower = sym->as->lower[dim];
2318 :
2319 : /* If the lower bound is an array element from another
2320 : parameterized array, then it is marked with EXPR_VARIABLE and
2321 : is an initialization expression. Try to reduce it. */
2322 1139 : if (lower->expr_type == EXPR_VARIABLE)
2323 7 : gfc_reduce_init_expr (lower);
2324 :
2325 1139 : if (lower->expr_type == EXPR_CONSTANT)
2326 : {
2327 : /* All dimensions must be without upper bound. */
2328 1138 : gcc_assert (!sym->as->upper[dim]);
2329 :
2330 1138 : k = lower->ts.kind;
2331 1138 : e = gfc_get_constant_expr (BT_INTEGER, k, &sym->declared_at);
2332 1138 : mpz_add (e->value.integer, lower->value.integer,
2333 1138 : init->shape[dim]);
2334 1138 : mpz_sub_ui (e->value.integer, e->value.integer, 1);
2335 1138 : sym->as->upper[dim] = e;
2336 : }
2337 : else
2338 : {
2339 1 : gfc_error ("Non-constant lower bound in implied-shape"
2340 : " declaration at %L", &lower->where);
2341 1 : return false;
2342 : }
2343 : }
2344 :
2345 1036 : sym->as->type = AS_EXPLICIT;
2346 : }
2347 :
2348 : /* Ensure that explicit bounds are simplified. */
2349 33628 : if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension
2350 3806 : && sym->as && sym->as->type == AS_EXPLICIT)
2351 : {
2352 8446 : for (int dim = 0; dim < sym->as->rank; ++dim)
2353 : {
2354 4652 : gfc_expr *e;
2355 :
2356 4652 : e = sym->as->lower[dim];
2357 4652 : if (e->expr_type != EXPR_CONSTANT)
2358 12 : gfc_reduce_init_expr (e);
2359 :
2360 4652 : e = sym->as->upper[dim];
2361 4652 : if (e->expr_type != EXPR_CONSTANT)
2362 106 : gfc_reduce_init_expr (e);
2363 : }
2364 : }
2365 :
2366 : /* Need to check if the expression we initialized this
2367 : to was one of the iso_c_binding named constants. If so,
2368 : and we're a parameter (constant), let it be iso_c.
2369 : For example:
2370 : integer(c_int), parameter :: my_int = c_int
2371 : integer(my_int) :: my_int_2
2372 : If we mark my_int as iso_c (since we can see it's value
2373 : is equal to one of the named constants), then my_int_2
2374 : will be considered C interoperable. */
2375 33628 : if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type))
2376 : {
2377 28971 : sym->ts.is_iso_c |= init->ts.is_iso_c;
2378 28971 : sym->ts.is_c_interop |= init->ts.is_c_interop;
2379 : /* attr bits needed for module files. */
2380 28971 : sym->attr.is_iso_c |= init->ts.is_iso_c;
2381 28971 : sym->attr.is_c_interop |= init->ts.is_c_interop;
2382 28971 : if (init->ts.is_iso_c)
2383 118 : sym->ts.f90_type = init->ts.f90_type;
2384 : }
2385 :
2386 : /* Catch the case: type(t), parameter :: x = z'1'. */
2387 33628 : if (sym->ts.type == BT_DERIVED && init->ts.type == BT_BOZ)
2388 : {
2389 1 : gfc_error ("Entity %qs at %L is incompatible with a BOZ "
2390 : "literal constant", name, &sym->declared_at);
2391 1 : return false;
2392 : }
2393 :
2394 : /* Add initializer. Make sure we keep the ranks sane. */
2395 33627 : if (sym->attr.dimension && init->rank == 0)
2396 : {
2397 1313 : mpz_t size;
2398 1313 : gfc_expr *array;
2399 1313 : int n;
2400 1313 : if (sym->attr.flavor == FL_PARAMETER
2401 468 : && gfc_is_constant_expr (init)
2402 467 : && (init->expr_type == EXPR_CONSTANT
2403 48 : || init->expr_type == EXPR_STRUCTURE)
2404 1780 : && spec_size (sym->as, &size))
2405 : {
2406 463 : array = gfc_get_array_expr (init->ts.type, init->ts.kind,
2407 : &init->where);
2408 463 : if (init->ts.type == BT_DERIVED)
2409 48 : array->ts.u.derived = init->ts.u.derived;
2410 67619 : for (n = 0; n < (int)mpz_get_si (size); n++)
2411 133990 : gfc_constructor_append_expr (&array->value.constructor,
2412 : n == 0
2413 : ? init
2414 66834 : : gfc_copy_expr (init),
2415 : &init->where);
2416 :
2417 463 : array->shape = gfc_get_shape (sym->as->rank);
2418 1052 : for (n = 0; n < sym->as->rank; n++)
2419 589 : spec_dimen_size (sym->as, n, &array->shape[n]);
2420 :
2421 463 : init = array;
2422 463 : mpz_clear (size);
2423 : }
2424 1313 : init->rank = sym->as->rank;
2425 1313 : init->corank = sym->as->corank;
2426 : }
2427 :
2428 33627 : sym->value = init;
2429 33627 : if (sym->attr.save == SAVE_NONE)
2430 28895 : sym->attr.save = SAVE_IMPLICIT;
2431 33627 : *initp = NULL;
2432 : }
2433 :
2434 : return true;
2435 : }
2436 :
2437 :
2438 : /* Function called by variable_decl() that adds a name to a structure
2439 : being built. */
2440 :
2441 : static bool
2442 18946 : build_struct (const char *name, gfc_charlen *cl, gfc_expr **init,
2443 : gfc_array_spec **as)
2444 : {
2445 18946 : gfc_state_data *s;
2446 18946 : gfc_component *c;
2447 :
2448 : /* F03:C438/C439. If the current symbol is of the same derived type that we're
2449 : constructing, it must have the pointer attribute. */
2450 18946 : if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
2451 3557 : && current_ts.u.derived == gfc_current_block ()
2452 291 : && current_attr.pointer == 0)
2453 : {
2454 130 : if (current_attr.allocatable
2455 130 : && !gfc_notify_std(GFC_STD_F2008, "Component at %C "
2456 : "must have the POINTER attribute"))
2457 : {
2458 : return false;
2459 : }
2460 129 : else if (current_attr.allocatable == 0)
2461 : {
2462 0 : gfc_error ("Component at %C must have the POINTER attribute");
2463 0 : return false;
2464 : }
2465 : }
2466 :
2467 : /* F03:C437. */
2468 18945 : if (current_ts.type == BT_CLASS
2469 887 : && !(current_attr.pointer || current_attr.allocatable))
2470 : {
2471 5 : gfc_error ("Component %qs with CLASS at %C must be allocatable "
2472 : "or pointer", name);
2473 5 : return false;
2474 : }
2475 :
2476 18940 : if (gfc_current_block ()->attr.pointer && (*as)->rank != 0)
2477 : {
2478 0 : if ((*as)->type != AS_DEFERRED && (*as)->type != AS_EXPLICIT)
2479 : {
2480 0 : gfc_error ("Array component of structure at %C must have explicit "
2481 : "or deferred shape");
2482 0 : return false;
2483 : }
2484 : }
2485 :
2486 : /* If we are in a nested union/map definition, gfc_add_component will not
2487 : properly find repeated components because:
2488 : (i) gfc_add_component does a flat search, where components of unions
2489 : and maps are implicity chained so nested components may conflict.
2490 : (ii) Unions and maps are not linked as components of their parent
2491 : structures until after they are parsed.
2492 : For (i) we use gfc_find_component which searches recursively, and for (ii)
2493 : we search each block directly from the parse stack until we find the top
2494 : level structure. */
2495 :
2496 18940 : s = gfc_state_stack;
2497 18940 : if (s->state == COMP_UNION || s->state == COMP_MAP)
2498 : {
2499 1434 : while (s->state == COMP_UNION || gfc_comp_struct (s->state))
2500 : {
2501 1434 : c = gfc_find_component (s->sym, name, true, true, NULL);
2502 1434 : if (c != NULL)
2503 : {
2504 0 : gfc_error_now ("Component %qs at %C already declared at %L",
2505 : name, &c->loc);
2506 0 : return false;
2507 : }
2508 : /* Break after we've searched the entire chain. */
2509 1434 : if (s->state == COMP_DERIVED || s->state == COMP_STRUCTURE)
2510 : break;
2511 1000 : s = s->previous;
2512 : }
2513 : }
2514 :
2515 18940 : if (!gfc_add_component (gfc_current_block(), name, &c))
2516 : return false;
2517 :
2518 18934 : c->ts = current_ts;
2519 18934 : if (c->ts.type == BT_CHARACTER)
2520 : {
2521 2054 : c->ts.u.cl = cl;
2522 : /* The component struct is not tracked by the symbol undo mechanism,
2523 : so free the charlen here to prevent a double-free. */
2524 2054 : gfc_remove_saved_charlen (cl);
2525 : }
2526 :
2527 18934 : if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED
2528 15383 : && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER)
2529 2330 : && saved_kind_expr != NULL)
2530 356 : c->kind_expr = gfc_copy_expr (saved_kind_expr);
2531 :
2532 18934 : c->attr = current_attr;
2533 :
2534 18934 : c->initializer = *init;
2535 18934 : *init = NULL;
2536 :
2537 : /* Update initializer character length according to component. */
2538 2054 : if (c->ts.type == BT_CHARACTER && c->ts.u.cl->length
2539 1641 : && c->ts.u.cl->length->expr_type == EXPR_CONSTANT
2540 1522 : && c->initializer && c->initializer->ts.type == BT_CHARACTER
2541 19265 : && !fix_initializer_charlen (&c->ts, c->initializer))
2542 : return false;
2543 :
2544 18934 : c->as = *as;
2545 18934 : if (c->as != NULL)
2546 : {
2547 5077 : if (c->as->corank)
2548 113 : c->attr.codimension = 1;
2549 5077 : if (c->as->rank)
2550 4996 : c->attr.dimension = 1;
2551 : }
2552 18934 : *as = NULL;
2553 :
2554 18934 : gfc_apply_init (&c->ts, &c->attr, c->initializer);
2555 :
2556 : /* Convert a class, PDT component of a non-derived type to a specific instance
2557 : before gfc_build_class_symbol gets to work on it. */
2558 18934 : if (c->ts.type == BT_CLASS
2559 882 : && !(gfc_current_block ()->attr.pdt_template
2560 882 : || gfc_current_block ()->attr.pdt_type)
2561 882 : && c->ts.u.derived->attr.pdt_template)
2562 : {
2563 12 : match m = gfc_get_pdt_instance (decl_type_param_list, &c->ts.u.derived, NULL);
2564 12 : if (m != MATCH_YES)
2565 : {
2566 0 : if (!gfc_error_check ())
2567 0 : gfc_error ("Parameterized component of a non-parameterized "
2568 : "derived type at %C could not be converted to a valid "
2569 : "instance");
2570 : return false;
2571 : }
2572 : }
2573 :
2574 : /* Check array components. */
2575 18934 : if (!c->attr.dimension)
2576 13938 : goto scalar;
2577 :
2578 4996 : if (c->attr.pointer)
2579 : {
2580 732 : if (c->as->type != AS_DEFERRED)
2581 : {
2582 5 : gfc_error ("Pointer array component of structure at %C must have a "
2583 : "deferred shape");
2584 5 : return false;
2585 : }
2586 : }
2587 4264 : else if (c->attr.allocatable)
2588 : {
2589 2501 : const char *err = G_("Allocatable component of structure at %C must have "
2590 : "a deferred shape");
2591 2501 : if (c->as->type != AS_DEFERRED)
2592 : {
2593 14 : if (c->ts.type == BT_CLASS || c->ts.type == BT_DERIVED)
2594 : {
2595 : /* Issue an immediate error and allow this component to pass for
2596 : the sake of clean error recovery. Set the error flag for the
2597 : containing derived type so that finalizers are not built. */
2598 4 : gfc_error_now (err);
2599 4 : s->sym->error = 1;
2600 4 : c->as->type = AS_DEFERRED;
2601 : }
2602 : else
2603 : {
2604 10 : gfc_error (err);
2605 10 : return false;
2606 : }
2607 : }
2608 : }
2609 : else
2610 : {
2611 1763 : if (c->as->type != AS_EXPLICIT)
2612 : {
2613 7 : gfc_error ("Array component of structure at %C must have an "
2614 : "explicit shape");
2615 7 : return false;
2616 : }
2617 : }
2618 :
2619 1756 : scalar:
2620 18912 : if (c->ts.type == BT_CLASS)
2621 879 : return gfc_build_class_symbol (&c->ts, &c->attr, &c->as);
2622 :
2623 18033 : if (c->attr.pdt_kind || c->attr.pdt_len)
2624 : {
2625 700 : gfc_symbol *sym;
2626 700 : gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived,
2627 : 0, &sym);
2628 700 : if (sym == NULL)
2629 : {
2630 0 : gfc_error ("Type parameter %qs at %C has no corresponding entry "
2631 : "in the type parameter name list at %L",
2632 0 : c->name, &gfc_current_block ()->declared_at);
2633 0 : return false;
2634 : }
2635 700 : sym->ts = c->ts;
2636 700 : sym->attr.pdt_kind = c->attr.pdt_kind;
2637 700 : sym->attr.pdt_len = c->attr.pdt_len;
2638 700 : if (c->initializer)
2639 264 : sym->value = gfc_copy_expr (c->initializer);
2640 700 : sym->attr.flavor = FL_VARIABLE;
2641 : }
2642 :
2643 18033 : if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS)
2644 2669 : && c->ts.u.derived && c->ts.u.derived->attr.pdt_template
2645 130 : && decl_type_param_list)
2646 130 : c->param_list = gfc_copy_actual_arglist (decl_type_param_list);
2647 :
2648 : return true;
2649 : }
2650 :
2651 :
2652 : /* Match a 'NULL()', and possibly take care of some side effects. */
2653 :
2654 : match
2655 1752 : gfc_match_null (gfc_expr **result)
2656 : {
2657 1752 : gfc_symbol *sym;
2658 1752 : match m, m2 = MATCH_NO;
2659 :
2660 1752 : if ((m = gfc_match (" null ( )")) == MATCH_ERROR)
2661 : return MATCH_ERROR;
2662 :
2663 1752 : if (m == MATCH_NO)
2664 : {
2665 511 : locus old_loc;
2666 511 : char name[GFC_MAX_SYMBOL_LEN + 1];
2667 :
2668 511 : if ((m2 = gfc_match (" null (")) != MATCH_YES)
2669 505 : return m2;
2670 :
2671 6 : old_loc = gfc_current_locus;
2672 6 : if ((m2 = gfc_match (" %n ) ", name)) == MATCH_ERROR)
2673 : return MATCH_ERROR;
2674 6 : if (m2 != MATCH_YES
2675 6 : && ((m2 = gfc_match (" mold = %n )", name)) == MATCH_ERROR))
2676 : return MATCH_ERROR;
2677 6 : if (m2 == MATCH_NO)
2678 : {
2679 0 : gfc_current_locus = old_loc;
2680 0 : return MATCH_NO;
2681 : }
2682 : }
2683 :
2684 : /* The NULL symbol now has to be/become an intrinsic function. */
2685 1247 : if (gfc_get_symbol ("null", NULL, &sym))
2686 : {
2687 0 : gfc_error ("NULL() initialization at %C is ambiguous");
2688 0 : return MATCH_ERROR;
2689 : }
2690 :
2691 1247 : gfc_intrinsic_symbol (sym);
2692 :
2693 1247 : if (sym->attr.proc != PROC_INTRINSIC
2694 877 : && !(sym->attr.use_assoc && sym->attr.intrinsic)
2695 2123 : && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL)
2696 876 : || !gfc_add_function (&sym->attr, sym->name, NULL)))
2697 : return MATCH_ERROR;
2698 :
2699 1247 : *result = gfc_get_null_expr (&gfc_current_locus);
2700 :
2701 : /* Invalid per F2008, C512. */
2702 1247 : if (m2 == MATCH_YES)
2703 : {
2704 6 : gfc_error ("NULL() initialization at %C may not have MOLD");
2705 6 : return MATCH_ERROR;
2706 : }
2707 :
2708 : return MATCH_YES;
2709 : }
2710 :
2711 :
2712 : /* Match the initialization expr for a data pointer or procedure pointer. */
2713 :
2714 : static match
2715 1416 : match_pointer_init (gfc_expr **init, int procptr)
2716 : {
2717 1416 : match m;
2718 :
2719 1416 : if (gfc_pure (NULL) && !gfc_comp_struct (gfc_state_stack->state))
2720 : {
2721 1 : gfc_error ("Initialization of pointer at %C is not allowed in "
2722 : "a PURE procedure");
2723 1 : return MATCH_ERROR;
2724 : }
2725 1415 : gfc_unset_implicit_pure (gfc_current_ns->proc_name);
2726 :
2727 : /* Match NULL() initialization. */
2728 1415 : m = gfc_match_null (init);
2729 1415 : if (m != MATCH_NO)
2730 : return m;
2731 :
2732 : /* Match non-NULL initialization. */
2733 176 : gfc_matching_ptr_assignment = !procptr;
2734 176 : gfc_matching_procptr_assignment = procptr;
2735 176 : m = gfc_match_rvalue (init);
2736 176 : gfc_matching_ptr_assignment = 0;
2737 176 : gfc_matching_procptr_assignment = 0;
2738 176 : if (m == MATCH_ERROR)
2739 : return MATCH_ERROR;
2740 175 : else if (m == MATCH_NO)
2741 : {
2742 2 : gfc_error ("Error in pointer initialization at %C");
2743 2 : return MATCH_ERROR;
2744 : }
2745 :
2746 173 : if (!procptr && !gfc_resolve_expr (*init))
2747 : return MATCH_ERROR;
2748 :
2749 172 : if (!gfc_notify_std (GFC_STD_F2008, "non-NULL pointer "
2750 : "initialization at %C"))
2751 0 : return MATCH_ERROR;
2752 :
2753 : return MATCH_YES;
2754 : }
2755 :
2756 :
2757 : static bool
2758 295175 : check_function_name (char *name)
2759 : {
2760 : /* In functions that have a RESULT variable defined, the function name always
2761 : refers to function calls. Therefore, the name is not allowed to appear in
2762 : specification statements. When checking this, be careful about
2763 : 'hidden' procedure pointer results ('ppr@'). */
2764 :
2765 295175 : if (gfc_current_state () == COMP_FUNCTION)
2766 : {
2767 48318 : gfc_symbol *block = gfc_current_block ();
2768 48318 : if (block && block->result && block->result != block
2769 15677 : && strcmp (block->result->name, "ppr@") != 0
2770 15618 : && strcmp (block->name, name) == 0)
2771 : {
2772 9 : gfc_error ("RESULT variable %qs at %L prohibits FUNCTION name %qs at %C "
2773 : "from appearing in a specification statement",
2774 : block->result->name, &block->result->declared_at, name);
2775 9 : return false;
2776 : }
2777 : }
2778 :
2779 : return true;
2780 : }
2781 :
2782 :
2783 : /* Match a variable name with an optional initializer. When this
2784 : subroutine is called, a variable is expected to be parsed next.
2785 : Depending on what is happening at the moment, updates either the
2786 : symbol table or the current interface. */
2787 :
2788 : static match
2789 284942 : variable_decl (int elem)
2790 : {
2791 284942 : char name[GFC_MAX_SYMBOL_LEN + 1];
2792 284942 : static unsigned int fill_id = 0;
2793 284942 : gfc_expr *initializer, *char_len;
2794 284942 : gfc_array_spec *as;
2795 284942 : gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */
2796 284942 : gfc_charlen *cl;
2797 284942 : gfc_charlen *saved_cl_list;
2798 284942 : bool cl_deferred;
2799 284942 : locus var_locus;
2800 284942 : match m;
2801 284942 : bool t;
2802 284942 : gfc_symbol *sym;
2803 284942 : char c;
2804 :
2805 284942 : initializer = NULL;
2806 284942 : as = NULL;
2807 284942 : cp_as = NULL;
2808 284942 : saved_cl_list = gfc_current_ns->cl_list;
2809 :
2810 : /* When we get here, we've just matched a list of attributes and
2811 : maybe a type and a double colon. The next thing we expect to see
2812 : is the name of the symbol. */
2813 :
2814 : /* If we are parsing a structure with legacy support, we allow the symbol
2815 : name to be '%FILL' which gives it an anonymous (inaccessible) name. */
2816 284942 : m = MATCH_NO;
2817 284942 : gfc_gobble_whitespace ();
2818 284942 : var_locus = gfc_current_locus;
2819 284942 : c = gfc_peek_ascii_char ();
2820 284942 : if (c == '%')
2821 : {
2822 12 : gfc_next_ascii_char (); /* Burn % character. */
2823 12 : m = gfc_match ("fill");
2824 12 : if (m == MATCH_YES)
2825 : {
2826 11 : if (gfc_current_state () != COMP_STRUCTURE)
2827 : {
2828 2 : if (flag_dec_structure)
2829 1 : gfc_error ("%qs not allowed outside STRUCTURE at %C", "%FILL");
2830 : else
2831 1 : gfc_error ("%qs at %C is a DEC extension, enable with "
2832 : "%<-fdec-structure%>", "%FILL");
2833 2 : m = MATCH_ERROR;
2834 2 : goto cleanup;
2835 : }
2836 :
2837 9 : if (attr_seen)
2838 : {
2839 1 : gfc_error ("%qs entity cannot have attributes at %C", "%FILL");
2840 1 : m = MATCH_ERROR;
2841 1 : goto cleanup;
2842 : }
2843 :
2844 : /* %FILL components are given invalid fortran names. */
2845 8 : snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "%%FILL%u", fill_id++);
2846 : }
2847 : else
2848 : {
2849 1 : gfc_error ("Invalid character %qc in variable name at %C", c);
2850 1 : return MATCH_ERROR;
2851 : }
2852 : }
2853 : else
2854 : {
2855 284930 : m = gfc_match_name (name);
2856 284929 : if (m != MATCH_YES)
2857 10 : goto cleanup;
2858 : }
2859 :
2860 : /* Now we could see the optional array spec. or character length. */
2861 284927 : m = gfc_match_array_spec (&as, true, true);
2862 284926 : if (m == MATCH_ERROR)
2863 57 : goto cleanup;
2864 :
2865 284869 : if (m == MATCH_NO)
2866 222396 : as = gfc_copy_array_spec (current_as);
2867 62473 : else if (current_as
2868 62473 : && !merge_array_spec (current_as, as, true))
2869 : {
2870 4 : m = MATCH_ERROR;
2871 4 : goto cleanup;
2872 : }
2873 :
2874 284865 : var_locus = gfc_get_location_range (NULL, 0, &var_locus, 1,
2875 : &gfc_current_locus);
2876 284865 : if (flag_cray_pointer)
2877 3063 : cp_as = gfc_copy_array_spec (as);
2878 :
2879 : /* At this point, we know for sure if the symbol is PARAMETER and can thus
2880 : determine (and check) whether it can be implied-shape. If it
2881 : was parsed as assumed-size, change it because PARAMETERs cannot
2882 : be assumed-size.
2883 :
2884 : An explicit-shape-array cannot appear under several conditions.
2885 : That check is done here as well. */
2886 284865 : if (as)
2887 : {
2888 85178 : if (as->type == AS_IMPLIED_SHAPE && current_attr.flavor != FL_PARAMETER)
2889 : {
2890 2 : m = MATCH_ERROR;
2891 2 : gfc_error ("Non-PARAMETER symbol %qs at %L cannot be implied-shape",
2892 : name, &var_locus);
2893 2 : goto cleanup;
2894 : }
2895 :
2896 85176 : if (as->type == AS_ASSUMED_SIZE && as->rank == 1
2897 6516 : && current_attr.flavor == FL_PARAMETER)
2898 993 : as->type = AS_IMPLIED_SHAPE;
2899 :
2900 85176 : if (as->type == AS_IMPLIED_SHAPE
2901 85176 : && !gfc_notify_std (GFC_STD_F2008, "Implied-shape array at %L",
2902 : &var_locus))
2903 : {
2904 1 : m = MATCH_ERROR;
2905 1 : goto cleanup;
2906 : }
2907 :
2908 85175 : gfc_seen_div0 = false;
2909 :
2910 : /* F2018:C830 (R816) An explicit-shape-spec whose bounds are not
2911 : constant expressions shall appear only in a subprogram, derived
2912 : type definition, BLOCK construct, or interface body. */
2913 85175 : if (as->type == AS_EXPLICIT
2914 42475 : && gfc_current_state () != COMP_BLOCK
2915 : && gfc_current_state () != COMP_DERIVED
2916 : && gfc_current_state () != COMP_FUNCTION
2917 : && gfc_current_state () != COMP_INTERFACE
2918 : && gfc_current_state () != COMP_SUBROUTINE)
2919 : {
2920 : gfc_expr *e;
2921 50361 : bool not_constant = false;
2922 :
2923 50361 : for (int i = 0; i < as->rank; i++)
2924 : {
2925 28644 : e = gfc_copy_expr (as->lower[i]);
2926 28644 : if (!gfc_resolve_expr (e) && gfc_seen_div0)
2927 : {
2928 0 : m = MATCH_ERROR;
2929 0 : goto cleanup;
2930 : }
2931 :
2932 28644 : gfc_simplify_expr (e, 0);
2933 28644 : if (e && (e->expr_type != EXPR_CONSTANT))
2934 : {
2935 : not_constant = true;
2936 : break;
2937 : }
2938 28644 : gfc_free_expr (e);
2939 :
2940 28644 : e = gfc_copy_expr (as->upper[i]);
2941 28644 : if (!gfc_resolve_expr (e) && gfc_seen_div0)
2942 : {
2943 4 : m = MATCH_ERROR;
2944 4 : goto cleanup;
2945 : }
2946 :
2947 28640 : gfc_simplify_expr (e, 0);
2948 28640 : if (e && (e->expr_type != EXPR_CONSTANT))
2949 : {
2950 : not_constant = true;
2951 : break;
2952 : }
2953 28627 : gfc_free_expr (e);
2954 : }
2955 :
2956 21730 : if (not_constant && e->ts.type != BT_INTEGER)
2957 : {
2958 4 : gfc_error ("Explicit array shape at %C must be constant of "
2959 : "INTEGER type and not %s type",
2960 : gfc_basic_typename (e->ts.type));
2961 4 : m = MATCH_ERROR;
2962 4 : goto cleanup;
2963 : }
2964 9 : if (not_constant)
2965 : {
2966 9 : gfc_error ("Explicit shaped array with nonconstant bounds at %C");
2967 9 : m = MATCH_ERROR;
2968 9 : goto cleanup;
2969 : }
2970 : }
2971 85158 : if (as->type == AS_EXPLICIT)
2972 : {
2973 101448 : for (int i = 0; i < as->rank; i++)
2974 : {
2975 58990 : gfc_expr *e, *n;
2976 58990 : e = as->lower[i];
2977 58990 : if (e->expr_type != EXPR_CONSTANT)
2978 : {
2979 452 : n = gfc_copy_expr (e);
2980 452 : if (!gfc_simplify_expr (n, 1) && gfc_seen_div0)
2981 : {
2982 0 : m = MATCH_ERROR;
2983 0 : goto cleanup;
2984 : }
2985 :
2986 452 : if (n->expr_type == EXPR_CONSTANT)
2987 22 : gfc_replace_expr (e, n);
2988 : else
2989 430 : gfc_free_expr (n);
2990 : }
2991 58990 : e = as->upper[i];
2992 58990 : if (e->expr_type != EXPR_CONSTANT)
2993 : {
2994 6843 : n = gfc_copy_expr (e);
2995 6843 : if (!gfc_simplify_expr (n, 1) && gfc_seen_div0)
2996 : {
2997 0 : m = MATCH_ERROR;
2998 0 : goto cleanup;
2999 : }
3000 :
3001 6843 : if (n->expr_type == EXPR_CONSTANT)
3002 45 : gfc_replace_expr (e, n);
3003 : else
3004 6798 : gfc_free_expr (n);
3005 : }
3006 : /* For an explicit-shape spec with constant bounds, ensure
3007 : that the effective upper bound is not lower than the
3008 : respective lower bound minus one. Otherwise adjust it so
3009 : that the extent is trivially derived to be zero. */
3010 58990 : if (as->lower[i]->expr_type == EXPR_CONSTANT
3011 58560 : && as->upper[i]->expr_type == EXPR_CONSTANT
3012 52186 : && as->lower[i]->ts.type == BT_INTEGER
3013 52186 : && as->upper[i]->ts.type == BT_INTEGER
3014 52181 : && mpz_cmp (as->upper[i]->value.integer,
3015 52181 : as->lower[i]->value.integer) < 0)
3016 1218 : mpz_sub_ui (as->upper[i]->value.integer,
3017 : as->lower[i]->value.integer, 1);
3018 : }
3019 : }
3020 : }
3021 :
3022 284845 : char_len = NULL;
3023 284845 : cl = NULL;
3024 284845 : cl_deferred = false;
3025 :
3026 284845 : if (current_ts.type == BT_CHARACTER)
3027 : {
3028 31440 : switch (match_char_length (&char_len, &cl_deferred, false))
3029 : {
3030 435 : case MATCH_YES:
3031 435 : cl = gfc_new_charlen (gfc_current_ns, NULL);
3032 :
3033 435 : cl->length = char_len;
3034 435 : break;
3035 :
3036 : /* Non-constant lengths need to be copied after the first
3037 : element. Also copy assumed lengths. */
3038 31004 : case MATCH_NO:
3039 31004 : if (elem > 1
3040 3935 : && (current_ts.u.cl->length == NULL
3041 2709 : || current_ts.u.cl->length->expr_type != EXPR_CONSTANT))
3042 : {
3043 1281 : cl = gfc_new_charlen (gfc_current_ns, NULL);
3044 1281 : cl->length = gfc_copy_expr (current_ts.u.cl->length);
3045 : }
3046 : else
3047 29723 : cl = current_ts.u.cl;
3048 :
3049 31004 : cl_deferred = current_ts.deferred;
3050 :
3051 31004 : break;
3052 :
3053 1 : case MATCH_ERROR:
3054 1 : goto cleanup;
3055 : }
3056 : }
3057 :
3058 : /* The dummy arguments and result of the abbreviated form of MODULE
3059 : PROCEDUREs, used in SUBMODULES should not be redefined. */
3060 284844 : if (gfc_current_ns->proc_name
3061 280354 : && gfc_current_ns->proc_name->abr_modproc_decl)
3062 : {
3063 44 : gfc_find_symbol (name, gfc_current_ns, 1, &sym);
3064 44 : if (sym != NULL && (sym->attr.dummy || sym->attr.result))
3065 : {
3066 2 : m = MATCH_ERROR;
3067 2 : gfc_error ("%qs at %L is a redefinition of the declaration "
3068 : "in the corresponding interface for MODULE "
3069 : "PROCEDURE %qs", sym->name, &var_locus,
3070 2 : gfc_current_ns->proc_name->name);
3071 2 : goto cleanup;
3072 : }
3073 : }
3074 :
3075 : /* %FILL components may not have initializers. */
3076 284842 : if (startswith (name, "%FILL") && gfc_match_eos () != MATCH_YES)
3077 : {
3078 1 : gfc_error ("%qs entity cannot have an initializer at %L", "%FILL",
3079 : &var_locus);
3080 1 : m = MATCH_ERROR;
3081 1 : goto cleanup;
3082 : }
3083 :
3084 : /* If this symbol has already shown up in a Cray Pointer declaration,
3085 : and this is not a component declaration,
3086 : then we want to set the type & bail out. */
3087 284841 : if (flag_cray_pointer && !gfc_comp_struct (gfc_current_state ()))
3088 : {
3089 2959 : gfc_find_symbol (name, gfc_current_ns, 0, &sym);
3090 2959 : if (sym != NULL && sym->attr.cray_pointee)
3091 : {
3092 101 : m = MATCH_YES;
3093 101 : if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus))
3094 : {
3095 1 : m = MATCH_ERROR;
3096 1 : goto cleanup;
3097 : }
3098 :
3099 : /* Check to see if we have an array specification. */
3100 100 : if (cp_as != NULL)
3101 : {
3102 49 : if (sym->as != NULL)
3103 : {
3104 1 : gfc_error ("Duplicate array spec for Cray pointee at %L", &var_locus);
3105 1 : gfc_free_array_spec (cp_as);
3106 1 : m = MATCH_ERROR;
3107 1 : goto cleanup;
3108 : }
3109 : else
3110 : {
3111 48 : if (!gfc_set_array_spec (sym, cp_as, &var_locus))
3112 0 : gfc_internal_error ("Cannot set pointee array spec.");
3113 :
3114 : /* Fix the array spec. */
3115 48 : m = gfc_mod_pointee_as (sym->as);
3116 48 : if (m == MATCH_ERROR)
3117 0 : goto cleanup;
3118 : }
3119 : }
3120 99 : goto cleanup;
3121 : }
3122 : else
3123 : {
3124 2858 : gfc_free_array_spec (cp_as);
3125 : }
3126 : }
3127 : else
3128 : {
3129 : /* Check to see if this is the declaration of the type and/or attributes
3130 : of an implicit function result, emanating from a module function
3131 : interface declared within the parent module or submodule of a
3132 : containing submodule. */
3133 281882 : gfc_find_symbol (name, gfc_current_ns, 0, &sym);
3134 281882 : if (gfc_current_state () == COMP_FUNCTION
3135 46836 : && sym == gfc_current_block ()
3136 8278 : && sym->attr.if_source == IFSRC_DECL
3137 4952 : && sym->attr.used_in_submodule
3138 4 : && sym == sym->result
3139 4 : && sym->ts.type != BT_UNKNOWN)
3140 : {
3141 4 : m = MATCH_YES;
3142 4 : goto cleanup;
3143 : }
3144 281878 : sym = NULL;
3145 : }
3146 :
3147 : /* Procedure pointer as function result. */
3148 284736 : if (gfc_current_state () == COMP_FUNCTION
3149 46946 : && strcmp ("ppr@", gfc_current_block ()->name) == 0
3150 25 : && strcmp (name, gfc_current_block ()->ns->proc_name->name) == 0)
3151 7 : strcpy (name, "ppr@");
3152 :
3153 284736 : if (gfc_current_state () == COMP_FUNCTION
3154 46946 : && strcmp (name, gfc_current_block ()->name) == 0
3155 8294 : && gfc_current_block ()->result
3156 8294 : && strcmp ("ppr@", gfc_current_block ()->result->name) == 0)
3157 16 : strcpy (name, "ppr@");
3158 :
3159 : /* OK, we've successfully matched the declaration. Now put the
3160 : symbol in the current namespace, because it might be used in the
3161 : optional initialization expression for this symbol, e.g. this is
3162 : perfectly legal:
3163 :
3164 : integer, parameter :: i = huge(i)
3165 :
3166 : This is only true for parameters or variables of a basic type.
3167 : For components of derived types, it is not true, so we don't
3168 : create a symbol for those yet. If we fail to create the symbol,
3169 : bail out. */
3170 284736 : if (!gfc_comp_struct (gfc_current_state ())
3171 265761 : && !build_sym (name, elem, cl, cl_deferred, &as, &var_locus))
3172 : {
3173 46 : m = MATCH_ERROR;
3174 46 : goto cleanup;
3175 : }
3176 :
3177 284690 : if (!check_function_name (name))
3178 : {
3179 0 : m = MATCH_ERROR;
3180 0 : goto cleanup;
3181 : }
3182 :
3183 : /* We allow old-style initializations of the form
3184 : integer i /2/, j(4) /3*3, 1/
3185 : (if no colon has been seen). These are different from data
3186 : statements in that initializers are only allowed to apply to the
3187 : variable immediately preceding, i.e.
3188 : integer i, j /1, 2/
3189 : is not allowed. Therefore we have to do some work manually, that
3190 : could otherwise be left to the matchers for DATA statements. */
3191 :
3192 284690 : if (!colon_seen && gfc_match (" /") == MATCH_YES)
3193 : {
3194 146 : if (!gfc_notify_std (GFC_STD_GNU, "Old-style "
3195 : "initialization at %C"))
3196 : return MATCH_ERROR;
3197 :
3198 : /* Allow old style initializations for components of STRUCTUREs and MAPs
3199 : but not components of derived types. */
3200 146 : else if (gfc_current_state () == COMP_DERIVED)
3201 : {
3202 2 : gfc_error ("Invalid old style initialization for derived type "
3203 : "component at %C");
3204 2 : m = MATCH_ERROR;
3205 2 : goto cleanup;
3206 : }
3207 :
3208 : /* For structure components, read the initializer as a special
3209 : expression and let the rest of this function apply the initializer
3210 : as usual. */
3211 144 : else if (gfc_comp_struct (gfc_current_state ()))
3212 : {
3213 74 : m = match_clist_expr (&initializer, ¤t_ts, as);
3214 74 : if (m == MATCH_NO)
3215 : gfc_error ("Syntax error in old style initialization of %s at %C",
3216 : name);
3217 74 : if (m != MATCH_YES)
3218 14 : goto cleanup;
3219 : }
3220 :
3221 : /* Otherwise we treat the old style initialization just like a
3222 : DATA declaration for the current variable. */
3223 : else
3224 70 : return match_old_style_init (name);
3225 : }
3226 :
3227 : /* The double colon must be present in order to have initializers.
3228 : Otherwise the statement is ambiguous with an assignment statement. */
3229 284604 : if (colon_seen)
3230 : {
3231 238349 : if (gfc_match (" =>") == MATCH_YES)
3232 : {
3233 1227 : if (!current_attr.pointer)
3234 : {
3235 0 : gfc_error ("Initialization at %C isn't for a pointer variable");
3236 0 : m = MATCH_ERROR;
3237 0 : goto cleanup;
3238 : }
3239 :
3240 1227 : m = match_pointer_init (&initializer, 0);
3241 1227 : if (m != MATCH_YES)
3242 10 : goto cleanup;
3243 :
3244 : /* The target of a pointer initialization must have the SAVE
3245 : attribute. A variable in PROGRAM, MODULE, or SUBMODULE scope
3246 : is implicit SAVEd. Explicitly, set the SAVE_IMPLICIT value. */
3247 1217 : if (initializer->expr_type == EXPR_VARIABLE
3248 128 : && initializer->symtree->n.sym->attr.save == SAVE_NONE
3249 25 : && (gfc_current_state () == COMP_PROGRAM
3250 : || gfc_current_state () == COMP_MODULE
3251 25 : || gfc_current_state () == COMP_SUBMODULE))
3252 11 : initializer->symtree->n.sym->attr.save = SAVE_IMPLICIT;
3253 : }
3254 237122 : else if (gfc_match_char ('=') == MATCH_YES)
3255 : {
3256 26590 : if (current_attr.pointer)
3257 : {
3258 0 : gfc_error ("Pointer initialization at %C requires %<=>%>, "
3259 : "not %<=%>");
3260 0 : m = MATCH_ERROR;
3261 0 : goto cleanup;
3262 : }
3263 :
3264 26590 : if (gfc_comp_struct (gfc_current_state ())
3265 2557 : && gfc_current_block ()->attr.pdt_template)
3266 : {
3267 293 : m = gfc_match_expr (&initializer);
3268 293 : if (initializer && initializer->ts.type == BT_UNKNOWN)
3269 127 : initializer->ts = current_ts;
3270 : }
3271 : else
3272 26297 : m = gfc_match_init_expr (&initializer);
3273 :
3274 26590 : if (m == MATCH_NO)
3275 : {
3276 1 : gfc_error ("Expected an initialization expression at %C");
3277 1 : m = MATCH_ERROR;
3278 : }
3279 :
3280 10402 : if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL)
3281 26592 : && !gfc_comp_struct (gfc_state_stack->state))
3282 : {
3283 1 : gfc_error ("Initialization of variable at %C is not allowed in "
3284 : "a PURE procedure");
3285 1 : m = MATCH_ERROR;
3286 : }
3287 :
3288 26590 : if (current_attr.flavor != FL_PARAMETER
3289 10402 : && !gfc_comp_struct (gfc_state_stack->state))
3290 7845 : gfc_unset_implicit_pure (gfc_current_ns->proc_name);
3291 :
3292 26590 : if (m != MATCH_YES)
3293 160 : goto cleanup;
3294 : }
3295 : }
3296 :
3297 284434 : if (initializer != NULL && current_attr.allocatable
3298 3 : && gfc_comp_struct (gfc_current_state ()))
3299 : {
3300 2 : gfc_error ("Initialization of allocatable component at %C is not "
3301 : "allowed");
3302 2 : m = MATCH_ERROR;
3303 2 : goto cleanup;
3304 : }
3305 :
3306 284432 : if (gfc_current_state () == COMP_DERIVED
3307 17933 : && initializer && initializer->ts.type == BT_HOLLERITH)
3308 : {
3309 1 : gfc_error ("Initialization of structure component with a HOLLERITH "
3310 : "constant at %L is not allowed", &initializer->where);
3311 1 : m = MATCH_ERROR;
3312 1 : goto cleanup;
3313 : }
3314 :
3315 284431 : if (gfc_current_state () == COMP_DERIVED
3316 17932 : && gfc_current_block ()->attr.pdt_template)
3317 : {
3318 1434 : gfc_symbol *param;
3319 1434 : gfc_find_symbol (name, gfc_current_block ()->f2k_derived,
3320 : 0, ¶m);
3321 1434 : if (!param && (current_attr.pdt_kind || current_attr.pdt_len))
3322 : {
3323 1 : gfc_error ("The component with KIND or LEN attribute at %C does not "
3324 : "not appear in the type parameter list at %L",
3325 1 : &gfc_current_block ()->declared_at);
3326 1 : m = MATCH_ERROR;
3327 4 : goto cleanup;
3328 : }
3329 1433 : else if (param && !(current_attr.pdt_kind || current_attr.pdt_len))
3330 : {
3331 1 : gfc_error ("The component at %C that appears in the type parameter "
3332 : "list at %L has neither the KIND nor LEN attribute",
3333 1 : &gfc_current_block ()->declared_at);
3334 1 : m = MATCH_ERROR;
3335 1 : goto cleanup;
3336 : }
3337 1432 : else if (as && (current_attr.pdt_kind || current_attr.pdt_len))
3338 : {
3339 1 : gfc_error ("The component at %C which is a type parameter must be "
3340 : "a scalar");
3341 1 : m = MATCH_ERROR;
3342 1 : goto cleanup;
3343 : }
3344 1431 : else if (param && initializer)
3345 : {
3346 265 : if (initializer->ts.type == BT_BOZ)
3347 : {
3348 1 : gfc_error ("BOZ literal constant at %L cannot appear as an "
3349 : "initializer", &initializer->where);
3350 1 : m = MATCH_ERROR;
3351 1 : goto cleanup;
3352 : }
3353 264 : param->value = gfc_copy_expr (initializer);
3354 : }
3355 : }
3356 :
3357 : /* Before adding a possible initializer, do a simple check for compatibility
3358 : of lhs and rhs types. Assigning a REAL value to a derived type is not a
3359 : good thing. */
3360 29117 : if (current_ts.type == BT_DERIVED && initializer
3361 285884 : && (gfc_numeric_ts (&initializer->ts)
3362 1455 : || initializer->ts.type == BT_LOGICAL
3363 1455 : || initializer->ts.type == BT_CHARACTER))
3364 : {
3365 2 : gfc_error ("Incompatible initialization between a derived type "
3366 : "entity and an entity with %qs type at %C",
3367 : gfc_typename (initializer));
3368 2 : m = MATCH_ERROR;
3369 2 : goto cleanup;
3370 : }
3371 :
3372 :
3373 : /* Add the initializer. Note that it is fine if initializer is
3374 : NULL here, because we sometimes also need to check if a
3375 : declaration *must* have an initialization expression. */
3376 284425 : if (!gfc_comp_struct (gfc_current_state ()))
3377 265479 : t = add_init_expr_to_sym (name, &initializer, &var_locus,
3378 : saved_cl_list);
3379 : else
3380 : {
3381 18946 : if (current_ts.type == BT_DERIVED
3382 2669 : && !current_attr.pointer && !initializer)
3383 2110 : initializer = gfc_default_initializer (¤t_ts);
3384 18946 : t = build_struct (name, cl, &initializer, &as);
3385 :
3386 : /* If we match a nested structure definition we expect to see the
3387 : * body even if the variable declarations blow up, so we need to keep
3388 : * the structure declaration around. */
3389 18946 : if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT)
3390 34 : gfc_commit_symbol (gfc_new_block);
3391 : }
3392 :
3393 284425 : m = (t) ? MATCH_YES : MATCH_ERROR;
3394 :
3395 284869 : cleanup:
3396 : /* Free stuff up and return. */
3397 284869 : gfc_seen_div0 = false;
3398 284869 : gfc_free_expr (initializer);
3399 284869 : gfc_free_array_spec (as);
3400 :
3401 284869 : return m;
3402 : }
3403 :
3404 :
3405 : /* Match an extended-f77 "TYPESPEC*bytesize"-style kind specification.
3406 : This assumes that the byte size is equal to the kind number for
3407 : non-COMPLEX types, and equal to twice the kind number for COMPLEX. */
3408 :
3409 : static match
3410 109246 : gfc_match_old_kind_spec (gfc_typespec *ts)
3411 : {
3412 109246 : match m;
3413 109246 : int original_kind;
3414 :
3415 109246 : if (gfc_match_char ('*') != MATCH_YES)
3416 : return MATCH_NO;
3417 :
3418 1150 : m = gfc_match_small_literal_int (&ts->kind, NULL);
3419 1150 : if (m != MATCH_YES)
3420 : return MATCH_ERROR;
3421 :
3422 1150 : original_kind = ts->kind;
3423 :
3424 : /* Massage the kind numbers for complex types. */
3425 1150 : if (ts->type == BT_COMPLEX)
3426 : {
3427 79 : if (ts->kind % 2)
3428 : {
3429 0 : gfc_error ("Old-style type declaration %s*%d not supported at %C",
3430 : gfc_basic_typename (ts->type), original_kind);
3431 0 : return MATCH_ERROR;
3432 : }
3433 79 : ts->kind /= 2;
3434 :
3435 : }
3436 :
3437 1150 : if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8)
3438 0 : ts->kind = 8;
3439 :
3440 1150 : if (ts->type == BT_REAL || ts->type == BT_COMPLEX)
3441 : {
3442 858 : if (ts->kind == 4)
3443 : {
3444 224 : if (flag_real4_kind == 8)
3445 24 : ts->kind = 8;
3446 224 : if (flag_real4_kind == 10)
3447 24 : ts->kind = 10;
3448 224 : if (flag_real4_kind == 16)
3449 24 : ts->kind = 16;
3450 : }
3451 634 : else if (ts->kind == 8)
3452 : {
3453 629 : if (flag_real8_kind == 4)
3454 24 : ts->kind = 4;
3455 629 : if (flag_real8_kind == 10)
3456 24 : ts->kind = 10;
3457 629 : if (flag_real8_kind == 16)
3458 24 : ts->kind = 16;
3459 : }
3460 : }
3461 :
3462 1150 : if (gfc_validate_kind (ts->type, ts->kind, true) < 0)
3463 : {
3464 8 : gfc_error ("Old-style type declaration %s*%d not supported at %C",
3465 : gfc_basic_typename (ts->type), original_kind);
3466 8 : return MATCH_ERROR;
3467 : }
3468 :
3469 1142 : if (!gfc_notify_std (GFC_STD_GNU,
3470 : "Nonstandard type declaration %s*%d at %C",
3471 : gfc_basic_typename(ts->type), original_kind))
3472 0 : return MATCH_ERROR;
3473 :
3474 : return MATCH_YES;
3475 : }
3476 :
3477 :
3478 : /* Match a kind specification. Since kinds are generally optional, we
3479 : usually return MATCH_NO if something goes wrong. If a "kind="
3480 : string is found, then we know we have an error. */
3481 :
3482 : match
3483 162673 : gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only)
3484 : {
3485 162673 : locus where, loc;
3486 162673 : gfc_expr *e;
3487 162673 : match m, n;
3488 162673 : char c;
3489 :
3490 162673 : m = MATCH_NO;
3491 162673 : n = MATCH_YES;
3492 162673 : e = NULL;
3493 162673 : saved_kind_expr = NULL;
3494 :
3495 162673 : where = loc = gfc_current_locus;
3496 :
3497 162673 : if (kind_expr_only)
3498 0 : goto kind_expr;
3499 :
3500 162673 : if (gfc_match_char ('(') == MATCH_NO)
3501 : return MATCH_NO;
3502 :
3503 : /* Also gobbles optional text. */
3504 51871 : if (gfc_match (" kind = ") == MATCH_YES)
3505 51871 : m = MATCH_ERROR;
3506 :
3507 51871 : loc = gfc_current_locus;
3508 :
3509 51871 : kind_expr:
3510 :
3511 51871 : n = gfc_match_init_expr (&e);
3512 :
3513 51871 : if (gfc_derived_parameter_expr (e))
3514 : {
3515 256 : ts->kind = 0;
3516 256 : saved_kind_expr = gfc_copy_expr (e);
3517 256 : goto close_brackets;
3518 : }
3519 :
3520 51615 : if (n != MATCH_YES)
3521 : {
3522 465 : if (gfc_matching_function)
3523 : {
3524 : /* The function kind expression might include use associated or
3525 : imported parameters and try again after the specification
3526 : expressions..... */
3527 437 : if (gfc_match_char (')') != MATCH_YES)
3528 : {
3529 1 : gfc_error ("Missing right parenthesis at %C");
3530 1 : m = MATCH_ERROR;
3531 1 : goto no_match;
3532 : }
3533 :
3534 436 : gfc_free_expr (e);
3535 436 : gfc_undo_symbols ();
3536 436 : return MATCH_YES;
3537 : }
3538 : else
3539 : {
3540 : /* ....or else, the match is real. */
3541 28 : if (n == MATCH_NO)
3542 0 : gfc_error ("Expected initialization expression at %C");
3543 : if (n != MATCH_YES)
3544 : return MATCH_ERROR;
3545 : }
3546 : }
3547 :
3548 51150 : if (e->rank != 0)
3549 : {
3550 0 : gfc_error ("Expected scalar initialization expression at %C");
3551 0 : m = MATCH_ERROR;
3552 0 : goto no_match;
3553 : }
3554 :
3555 51150 : if (gfc_extract_int (e, &ts->kind, 1))
3556 : {
3557 0 : m = MATCH_ERROR;
3558 0 : goto no_match;
3559 : }
3560 :
3561 : /* Before throwing away the expression, let's see if we had a
3562 : C interoperable kind (and store the fact). */
3563 51150 : if (e->ts.is_c_interop == 1)
3564 : {
3565 : /* Mark this as C interoperable if being declared with one
3566 : of the named constants from iso_c_binding. */
3567 18874 : ts->is_c_interop = e->ts.is_iso_c;
3568 18874 : ts->f90_type = e->ts.f90_type;
3569 18874 : if (e->symtree)
3570 18873 : ts->interop_kind = e->symtree->n.sym;
3571 : }
3572 :
3573 51150 : gfc_free_expr (e);
3574 51150 : e = NULL;
3575 :
3576 : /* Ignore errors to this point, if we've gotten here. This means
3577 : we ignore the m=MATCH_ERROR from above. */
3578 51150 : if (gfc_validate_kind (ts->type, ts->kind, true) < 0)
3579 : {
3580 7 : gfc_error ("Kind %d not supported for type %s at %C", ts->kind,
3581 : gfc_basic_typename (ts->type));
3582 7 : gfc_current_locus = where;
3583 7 : return MATCH_ERROR;
3584 : }
3585 :
3586 : /* Warn if, e.g., c_int is used for a REAL variable, but not
3587 : if, e.g., c_double is used for COMPLEX as the standard
3588 : explicitly says that the kind type parameter for complex and real
3589 : variable is the same, i.e. c_float == c_float_complex. */
3590 51143 : if (ts->f90_type != BT_UNKNOWN && ts->f90_type != ts->type
3591 17 : && !((ts->f90_type == BT_REAL && ts->type == BT_COMPLEX)
3592 1 : || (ts->f90_type == BT_COMPLEX && ts->type == BT_REAL)))
3593 13 : gfc_warning_now (0, "C kind type parameter is for type %s but type at %L "
3594 : "is %s", gfc_basic_typename (ts->f90_type), &where,
3595 : gfc_basic_typename (ts->type));
3596 :
3597 51130 : close_brackets:
3598 :
3599 51399 : gfc_gobble_whitespace ();
3600 51399 : if ((c = gfc_next_ascii_char ()) != ')'
3601 51399 : && (ts->type != BT_CHARACTER || c != ','))
3602 : {
3603 0 : if (ts->type == BT_CHARACTER)
3604 0 : gfc_error ("Missing right parenthesis or comma at %C");
3605 : else
3606 0 : gfc_error ("Missing right parenthesis at %C");
3607 0 : m = MATCH_ERROR;
3608 0 : goto no_match;
3609 : }
3610 : else
3611 : /* All tests passed. */
3612 51399 : m = MATCH_YES;
3613 :
3614 51399 : if(m == MATCH_ERROR)
3615 : gfc_current_locus = where;
3616 :
3617 51399 : if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8)
3618 0 : ts->kind = 8;
3619 :
3620 51399 : if (ts->type == BT_REAL || ts->type == BT_COMPLEX)
3621 : {
3622 14539 : if (ts->kind == 4)
3623 : {
3624 4617 : if (flag_real4_kind == 8)
3625 54 : ts->kind = 8;
3626 4617 : if (flag_real4_kind == 10)
3627 54 : ts->kind = 10;
3628 4617 : if (flag_real4_kind == 16)
3629 54 : ts->kind = 16;
3630 : }
3631 9922 : else if (ts->kind == 8)
3632 : {
3633 6730 : if (flag_real8_kind == 4)
3634 48 : ts->kind = 4;
3635 6730 : if (flag_real8_kind == 10)
3636 48 : ts->kind = 10;
3637 6730 : if (flag_real8_kind == 16)
3638 48 : ts->kind = 16;
3639 : }
3640 : }
3641 :
3642 : /* Return what we know from the test(s). */
3643 : return m;
3644 :
3645 1 : no_match:
3646 1 : gfc_free_expr (e);
3647 1 : gfc_current_locus = where;
3648 1 : return m;
3649 : }
3650 :
3651 :
3652 : static match
3653 5014 : match_char_kind (int * kind, int * is_iso_c)
3654 : {
3655 5014 : locus where;
3656 5014 : gfc_expr *e;
3657 5014 : match m, n;
3658 5014 : bool fail;
3659 :
3660 5014 : m = MATCH_NO;
3661 5014 : e = NULL;
3662 5014 : where = gfc_current_locus;
3663 :
3664 5014 : n = gfc_match_init_expr (&e);
3665 :
3666 5014 : if (n != MATCH_YES && gfc_matching_function)
3667 : {
3668 : /* The expression might include use-associated or imported
3669 : parameters and try again after the specification
3670 : expressions. */
3671 7 : gfc_free_expr (e);
3672 7 : gfc_undo_symbols ();
3673 7 : return MATCH_YES;
3674 : }
3675 :
3676 7 : if (n == MATCH_NO)
3677 2 : gfc_error ("Expected initialization expression at %C");
3678 5007 : if (n != MATCH_YES)
3679 : return MATCH_ERROR;
3680 :
3681 5000 : if (e->rank != 0)
3682 : {
3683 0 : gfc_error ("Expected scalar initialization expression at %C");
3684 0 : m = MATCH_ERROR;
3685 0 : goto no_match;
3686 : }
3687 :
3688 5000 : if (gfc_derived_parameter_expr (e))
3689 : {
3690 80 : saved_kind_expr = e;
3691 80 : *kind = 0;
3692 80 : return MATCH_YES;
3693 : }
3694 :
3695 4920 : fail = gfc_extract_int (e, kind, 1);
3696 4920 : *is_iso_c = e->ts.is_iso_c;
3697 4920 : if (fail)
3698 : {
3699 0 : m = MATCH_ERROR;
3700 0 : goto no_match;
3701 : }
3702 :
3703 4920 : gfc_free_expr (e);
3704 :
3705 : /* Ignore errors to this point, if we've gotten here. This means
3706 : we ignore the m=MATCH_ERROR from above. */
3707 4920 : if (gfc_validate_kind (BT_CHARACTER, *kind, true) < 0)
3708 : {
3709 14 : gfc_error ("Kind %d is not supported for CHARACTER at %C", *kind);
3710 14 : m = MATCH_ERROR;
3711 : }
3712 : else
3713 : /* All tests passed. */
3714 : m = MATCH_YES;
3715 :
3716 14 : if (m == MATCH_ERROR)
3717 14 : gfc_current_locus = where;
3718 :
3719 : /* Return what we know from the test(s). */
3720 : return m;
3721 :
3722 0 : no_match:
3723 0 : gfc_free_expr (e);
3724 0 : gfc_current_locus = where;
3725 0 : return m;
3726 : }
3727 :
3728 :
3729 : /* Match the various kind/length specifications in a CHARACTER
3730 : declaration. We don't return MATCH_NO. */
3731 :
3732 : match
3733 32381 : gfc_match_char_spec (gfc_typespec *ts)
3734 : {
3735 32381 : int kind, seen_length, is_iso_c;
3736 32381 : gfc_charlen *cl;
3737 32381 : gfc_expr *len;
3738 32381 : match m;
3739 32381 : bool deferred;
3740 :
3741 32381 : len = NULL;
3742 32381 : seen_length = 0;
3743 32381 : kind = 0;
3744 32381 : is_iso_c = 0;
3745 32381 : deferred = false;
3746 :
3747 : /* Try the old-style specification first. */
3748 32381 : old_char_selector = 0;
3749 :
3750 32381 : m = match_char_length (&len, &deferred, true);
3751 32381 : if (m != MATCH_NO)
3752 : {
3753 2205 : if (m == MATCH_YES)
3754 2205 : old_char_selector = 1;
3755 2205 : seen_length = 1;
3756 2205 : goto done;
3757 : }
3758 :
3759 30176 : m = gfc_match_char ('(');
3760 30176 : if (m != MATCH_YES)
3761 : {
3762 1916 : m = MATCH_YES; /* Character without length is a single char. */
3763 1916 : goto done;
3764 : }
3765 :
3766 : /* Try the weird case: ( KIND = <int> [ , LEN = <len-param> ] ). */
3767 28260 : if (gfc_match (" kind =") == MATCH_YES)
3768 : {
3769 3529 : m = match_char_kind (&kind, &is_iso_c);
3770 :
3771 3529 : if (m == MATCH_ERROR)
3772 16 : goto done;
3773 3513 : if (m == MATCH_NO)
3774 : goto syntax;
3775 :
3776 3513 : if (gfc_match (" , len =") == MATCH_NO)
3777 518 : goto rparen;
3778 :
3779 2995 : m = char_len_param_value (&len, &deferred);
3780 2995 : if (m == MATCH_NO)
3781 0 : goto syntax;
3782 2995 : if (m == MATCH_ERROR)
3783 2 : goto done;
3784 2993 : seen_length = 1;
3785 :
3786 2993 : goto rparen;
3787 : }
3788 :
3789 : /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */
3790 24731 : if (gfc_match (" len =") == MATCH_YES)
3791 : {
3792 14108 : m = char_len_param_value (&len, &deferred);
3793 14108 : if (m == MATCH_NO)
3794 2 : goto syntax;
3795 14106 : if (m == MATCH_ERROR)
3796 8 : goto done;
3797 14098 : seen_length = 1;
3798 :
3799 14098 : if (gfc_match_char (')') == MATCH_YES)
3800 12793 : goto done;
3801 :
3802 1305 : if (gfc_match (" , kind =") != MATCH_YES)
3803 0 : goto syntax;
3804 :
3805 1305 : if (match_char_kind (&kind, &is_iso_c) == MATCH_ERROR)
3806 2 : goto done;
3807 :
3808 1303 : goto rparen;
3809 : }
3810 :
3811 : /* Try to match ( <len-param> ) or ( <len-param> , [ KIND = ] <int> ). */
3812 10623 : m = char_len_param_value (&len, &deferred);
3813 10623 : if (m == MATCH_NO)
3814 0 : goto syntax;
3815 10623 : if (m == MATCH_ERROR)
3816 44 : goto done;
3817 10579 : seen_length = 1;
3818 :
3819 10579 : m = gfc_match_char (')');
3820 10579 : if (m == MATCH_YES)
3821 10397 : goto done;
3822 :
3823 182 : if (gfc_match_char (',') != MATCH_YES)
3824 2 : goto syntax;
3825 :
3826 180 : gfc_match (" kind ="); /* Gobble optional text. */
3827 :
3828 180 : m = match_char_kind (&kind, &is_iso_c);
3829 180 : if (m == MATCH_ERROR)
3830 3 : goto done;
3831 : if (m == MATCH_NO)
3832 : goto syntax;
3833 :
3834 4991 : rparen:
3835 : /* Require a right-paren at this point. */
3836 4991 : m = gfc_match_char (')');
3837 4991 : if (m == MATCH_YES)
3838 4991 : goto done;
3839 :
3840 0 : syntax:
3841 4 : gfc_error ("Syntax error in CHARACTER declaration at %C");
3842 4 : m = MATCH_ERROR;
3843 4 : gfc_free_expr (len);
3844 4 : return m;
3845 :
3846 32377 : done:
3847 : /* Deal with character functions after USE and IMPORT statements. */
3848 32377 : if (gfc_matching_function)
3849 : {
3850 1431 : gfc_free_expr (len);
3851 1431 : gfc_undo_symbols ();
3852 1431 : return MATCH_YES;
3853 : }
3854 :
3855 30946 : if (m != MATCH_YES)
3856 : {
3857 65 : gfc_free_expr (len);
3858 65 : return m;
3859 : }
3860 :
3861 : /* Do some final massaging of the length values. */
3862 30881 : cl = gfc_new_charlen (gfc_current_ns, NULL);
3863 :
3864 30881 : if (seen_length == 0)
3865 2382 : cl->length = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1);
3866 : else
3867 : {
3868 : /* If gfortran ends up here, then len may be reducible to a constant.
3869 : Try to do that here. If it does not reduce, simply assign len to
3870 : charlen. A complication occurs with user-defined generic functions,
3871 : which are not resolved. Use a private namespace to deal with
3872 : generic functions. */
3873 :
3874 28499 : if (len && len->expr_type != EXPR_CONSTANT)
3875 : {
3876 3195 : gfc_namespace *old_ns;
3877 3195 : gfc_expr *e;
3878 :
3879 3195 : old_ns = gfc_current_ns;
3880 3195 : gfc_current_ns = gfc_get_namespace (NULL, 0);
3881 :
3882 3195 : e = gfc_copy_expr (len);
3883 3195 : gfc_push_suppress_errors ();
3884 3195 : gfc_reduce_init_expr (e);
3885 3195 : gfc_pop_suppress_errors ();
3886 3195 : if (e->expr_type == EXPR_CONSTANT)
3887 : {
3888 318 : gfc_replace_expr (len, e);
3889 318 : if (mpz_cmp_si (len->value.integer, 0) < 0)
3890 7 : mpz_set_ui (len->value.integer, 0);
3891 : }
3892 : else
3893 2877 : gfc_free_expr (e);
3894 :
3895 3195 : gfc_free_namespace (gfc_current_ns);
3896 3195 : gfc_current_ns = old_ns;
3897 : }
3898 :
3899 28499 : cl->length = len;
3900 : }
3901 :
3902 30881 : ts->u.cl = cl;
3903 30881 : ts->kind = kind == 0 ? gfc_default_character_kind : kind;
3904 30881 : ts->deferred = deferred;
3905 :
3906 : /* We have to know if it was a C interoperable kind so we can
3907 : do accurate type checking of bind(c) procs, etc. */
3908 30881 : if (kind != 0)
3909 : /* Mark this as C interoperable if being declared with one
3910 : of the named constants from iso_c_binding. */
3911 4831 : ts->is_c_interop = is_iso_c;
3912 26050 : else if (len != NULL)
3913 : /* Here, we might have parsed something such as: character(c_char)
3914 : In this case, the parsing code above grabs the c_char when
3915 : looking for the length (line 1690, roughly). it's the last
3916 : testcase for parsing the kind params of a character variable.
3917 : However, it's not actually the length. this seems like it
3918 : could be an error.
3919 : To see if the user used a C interop kind, test the expr
3920 : of the so called length, and see if it's C interoperable. */
3921 16807 : ts->is_c_interop = len->ts.is_iso_c;
3922 :
3923 : return MATCH_YES;
3924 : }
3925 :
3926 :
3927 : /* Matches a RECORD declaration. */
3928 :
3929 : static match
3930 979466 : match_record_decl (char *name)
3931 : {
3932 979466 : locus old_loc;
3933 979466 : old_loc = gfc_current_locus;
3934 979466 : match m;
3935 :
3936 979466 : m = gfc_match (" record /");
3937 979466 : if (m == MATCH_YES)
3938 : {
3939 353 : if (!flag_dec_structure)
3940 : {
3941 6 : gfc_current_locus = old_loc;
3942 6 : gfc_error ("RECORD at %C is an extension, enable it with "
3943 : "%<-fdec-structure%>");
3944 6 : return MATCH_ERROR;
3945 : }
3946 347 : m = gfc_match (" %n/", name);
3947 347 : if (m == MATCH_YES)
3948 : return MATCH_YES;
3949 : }
3950 :
3951 979116 : gfc_current_locus = old_loc;
3952 979116 : if (flag_dec_structure
3953 979116 : && (gfc_match (" record% ") == MATCH_YES
3954 8026 : || gfc_match (" record%t") == MATCH_YES))
3955 6 : gfc_error ("Structure name expected after RECORD at %C");
3956 979116 : if (m == MATCH_NO)
3957 979116 : return MATCH_NO;
3958 :
3959 : return MATCH_ERROR;
3960 : }
3961 :
3962 :
3963 : /* In parsing a PDT, it is possible that one of the type parameters has the
3964 : same name as a previously declared symbol that is not a type parameter.
3965 : Intercept this now by looking for the symtree in f2k_derived. */
3966 :
3967 : static bool
3968 1102 : correct_parm_expr (gfc_expr* e, gfc_symbol* pdt, int* f ATTRIBUTE_UNUSED)
3969 : {
3970 1102 : if (!e || (e->expr_type != EXPR_VARIABLE && e->expr_type != EXPR_FUNCTION))
3971 : return false;
3972 :
3973 885 : if (!(e->symtree->n.sym->attr.pdt_len
3974 242 : || e->symtree->n.sym->attr.pdt_kind))
3975 : {
3976 158 : gfc_symtree *st;
3977 158 : st = gfc_find_symtree (pdt->f2k_derived->sym_root,
3978 : e->symtree->n.sym->name);
3979 158 : if (st && st->n.sym
3980 30 : && (st->n.sym->attr.pdt_len || st->n.sym->attr.pdt_kind))
3981 : {
3982 30 : gfc_expr *new_expr;
3983 30 : gfc_set_sym_referenced (st->n.sym);
3984 30 : new_expr = gfc_get_expr ();
3985 30 : new_expr->ts = st->n.sym->ts;
3986 30 : new_expr->expr_type = EXPR_VARIABLE;
3987 30 : new_expr->symtree = st;
3988 30 : new_expr->where = e->where;
3989 30 : gfc_replace_expr (e, new_expr);
3990 : }
3991 : }
3992 :
3993 : return false;
3994 : }
3995 :
3996 :
3997 : void
3998 918 : gfc_correct_parm_expr (gfc_symbol *pdt, gfc_expr **bound)
3999 : {
4000 918 : if (!*bound || (*bound)->expr_type == EXPR_CONSTANT)
4001 : return;
4002 731 : gfc_traverse_expr (*bound, pdt, &correct_parm_expr, 0);
4003 : }
4004 :
4005 : /* This function uses the gfc_actual_arglist 'type_param_spec_list' as a source
4006 : of expressions to substitute into the possibly parameterized expression
4007 : 'e'. Using a list is inefficient but should not be too bad since the
4008 : number of type parameters is not likely to be large. */
4009 : static bool
4010 4135 : insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED,
4011 : int* f)
4012 : {
4013 4135 : gfc_actual_arglist *param;
4014 4135 : gfc_expr *copy;
4015 :
4016 4135 : if (e->expr_type != EXPR_VARIABLE && e->expr_type != EXPR_FUNCTION)
4017 : return false;
4018 :
4019 1879 : gcc_assert (e->symtree);
4020 1879 : if (e->symtree->n.sym->attr.pdt_kind
4021 1236 : || (*f != 0 && e->symtree->n.sym->attr.pdt_len)
4022 669 : || (e->expr_type == EXPR_FUNCTION && e->symtree->n.sym))
4023 : {
4024 2122 : for (param = type_param_spec_list; param; param = param->next)
4025 1978 : if (!strcmp (e->symtree->n.sym->name, param->name))
4026 : break;
4027 :
4028 1353 : if (param && param->expr)
4029 : {
4030 1208 : copy = gfc_copy_expr (param->expr);
4031 1208 : gfc_replace_expr (e, copy);
4032 : /* Catch variables declared without a value expression. */
4033 1208 : if (e->expr_type == EXPR_VARIABLE && e->ts.type == BT_PROCEDURE)
4034 21 : e->ts = e->symtree->n.sym->ts;
4035 : }
4036 : }
4037 :
4038 : return false;
4039 : }
4040 :
4041 :
4042 : static bool
4043 1187 : gfc_insert_kind_parameter_exprs (gfc_expr *e)
4044 : {
4045 1187 : return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0);
4046 : }
4047 :
4048 :
4049 : bool
4050 2151 : gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list)
4051 : {
4052 2151 : gfc_actual_arglist *old_param_spec_list = type_param_spec_list;
4053 2151 : type_param_spec_list = param_list;
4054 2151 : bool res = gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1);
4055 2151 : type_param_spec_list = old_param_spec_list;
4056 2151 : return res;
4057 : }
4058 :
4059 : /* Determines the instance of a parameterized derived type to be used by
4060 : matching determining the values of the kind parameters and using them
4061 : in the name of the instance. If the instance exists, it is used, otherwise
4062 : a new derived type is created. */
4063 : match
4064 3035 : gfc_get_pdt_instance (gfc_actual_arglist *param_list, gfc_symbol **sym,
4065 : gfc_actual_arglist **ext_param_list)
4066 : {
4067 : /* The PDT template symbol. */
4068 3035 : gfc_symbol *pdt = *sym;
4069 : /* The symbol for the parameter in the template f2k_namespace. */
4070 3035 : gfc_symbol *param;
4071 : /* The hoped for instance of the PDT. */
4072 3035 : gfc_symbol *instance = NULL;
4073 : /* The list of parameters appearing in the PDT declaration. */
4074 3035 : gfc_formal_arglist *type_param_name_list;
4075 : /* Used to store the parameter specification list during recursive calls. */
4076 3035 : gfc_actual_arglist *old_param_spec_list;
4077 : /* Pointers to the parameter specification being used. */
4078 3035 : gfc_actual_arglist *actual_param;
4079 3035 : gfc_actual_arglist *tail = NULL;
4080 : /* Used to build up the name of the PDT instance. */
4081 3035 : char *name;
4082 3035 : bool name_seen = (param_list == NULL);
4083 3035 : bool assumed_seen = false;
4084 3035 : bool deferred_seen = false;
4085 3035 : bool spec_error = false;
4086 3035 : bool alloc_seen = false;
4087 3035 : bool ptr_seen = false;
4088 3035 : int i;
4089 3035 : gfc_expr *kind_expr;
4090 3035 : gfc_component *c1, *c2;
4091 3035 : match m;
4092 3035 : gfc_symtree *s = NULL;
4093 :
4094 3035 : type_param_spec_list = NULL;
4095 :
4096 3035 : type_param_name_list = pdt->formal;
4097 3035 : actual_param = param_list;
4098 :
4099 : /* Prevent a PDT component of the same type as the template from being
4100 : converted into an instance. Doing this results in the component being
4101 : lost. */
4102 3035 : if (gfc_current_state () == COMP_DERIVED
4103 113 : && !(gfc_state_stack->previous
4104 113 : && gfc_state_stack->previous->state == COMP_DERIVED)
4105 113 : && gfc_current_block ()->attr.pdt_template)
4106 : {
4107 100 : if (ext_param_list)
4108 100 : *ext_param_list = gfc_copy_actual_arglist (param_list);
4109 : return MATCH_YES;
4110 : }
4111 :
4112 2935 : name = xasprintf ("%s%s", PDT_PREFIX, pdt->name);
4113 :
4114 : /* Run through the parameter name list and pick up the actual
4115 : parameter values or use the default values in the PDT declaration. */
4116 9872 : for (; type_param_name_list;
4117 4002 : type_param_name_list = type_param_name_list->next)
4118 : {
4119 4070 : if (actual_param && actual_param->spec_type != SPEC_EXPLICIT)
4120 : {
4121 3620 : if (actual_param->spec_type == SPEC_ASSUMED)
4122 : spec_error = deferred_seen;
4123 : else
4124 3620 : spec_error = assumed_seen;
4125 :
4126 3620 : if (spec_error)
4127 : {
4128 : gfc_error ("The type parameter spec list at %C cannot contain "
4129 : "both ASSUMED and DEFERRED parameters");
4130 : goto error_return;
4131 : }
4132 : }
4133 :
4134 3620 : if (actual_param && actual_param->name)
4135 4070 : name_seen = true;
4136 4070 : param = type_param_name_list->sym;
4137 :
4138 4070 : if (!param || !param->name)
4139 2 : continue;
4140 :
4141 4068 : c1 = gfc_find_component (pdt, param->name, false, true, NULL);
4142 : /* An error should already have been thrown in resolve.cc
4143 : (resolve_fl_derived0). */
4144 4068 : if (!pdt->attr.use_assoc && !c1)
4145 8 : goto error_return;
4146 :
4147 : /* Resolution PDT class components of derived types are handled here.
4148 : They can arrive without a parameter list and no KIND parameters. */
4149 4060 : if (!param_list && (!c1->attr.pdt_kind && !c1->initializer))
4150 20 : continue;
4151 :
4152 4040 : kind_expr = NULL;
4153 4040 : if (!name_seen)
4154 : {
4155 2236 : if (!actual_param && !(c1 && c1->initializer))
4156 : {
4157 2 : gfc_error ("The type parameter spec list at %C does not contain "
4158 : "enough parameter expressions");
4159 2 : goto error_return;
4160 : }
4161 2234 : else if (!actual_param && c1 && c1->initializer)
4162 5 : kind_expr = gfc_copy_expr (c1->initializer);
4163 2229 : else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT)
4164 1986 : kind_expr = gfc_copy_expr (actual_param->expr);
4165 : }
4166 : else
4167 : {
4168 : actual_param = param_list;
4169 2684 : for (;actual_param; actual_param = actual_param->next)
4170 2246 : if (actual_param->name
4171 2226 : && strcmp (actual_param->name, param->name) == 0)
4172 : break;
4173 1804 : if (actual_param && actual_param->spec_type == SPEC_EXPLICIT)
4174 1199 : kind_expr = gfc_copy_expr (actual_param->expr);
4175 : else
4176 : {
4177 605 : if (c1->initializer)
4178 541 : kind_expr = gfc_copy_expr (c1->initializer);
4179 64 : else if (!(actual_param && param->attr.pdt_len))
4180 : {
4181 9 : gfc_error ("The derived parameter %qs at %C does not "
4182 : "have a default value", param->name);
4183 9 : goto error_return;
4184 : }
4185 : }
4186 : }
4187 :
4188 3731 : if (kind_expr && kind_expr->expr_type == EXPR_VARIABLE
4189 342 : && kind_expr->ts.type != BT_INTEGER
4190 136 : && kind_expr->symtree->n.sym->ts.type != BT_INTEGER)
4191 : {
4192 12 : gfc_error ("The type parameter expression at %L must be of INTEGER "
4193 : "type and not %s", &kind_expr->where,
4194 : gfc_basic_typename (kind_expr->symtree->n.sym->ts.type));
4195 12 : goto error_return;
4196 : }
4197 :
4198 : /* Store the current parameter expressions in a temporary actual
4199 : arglist 'list' so that they can be substituted in the corresponding
4200 : expressions in the PDT instance. */
4201 4017 : if (type_param_spec_list == NULL)
4202 : {
4203 2892 : type_param_spec_list = gfc_get_actual_arglist ();
4204 2892 : tail = type_param_spec_list;
4205 : }
4206 : else
4207 : {
4208 1125 : tail->next = gfc_get_actual_arglist ();
4209 1125 : tail = tail->next;
4210 : }
4211 4017 : tail->name = param->name;
4212 :
4213 4017 : if (kind_expr)
4214 : {
4215 : /* Try simplification even for LEN expressions. */
4216 3719 : bool ok;
4217 3719 : gfc_resolve_expr (kind_expr);
4218 :
4219 3719 : if (c1->attr.pdt_kind
4220 2018 : && kind_expr->expr_type != EXPR_CONSTANT
4221 28 : && type_param_spec_list)
4222 28 : gfc_insert_parameter_exprs (kind_expr, type_param_spec_list);
4223 :
4224 3719 : ok = gfc_simplify_expr (kind_expr, 1);
4225 : /* Variable expressions default to BT_PROCEDURE in the absence of an
4226 : initializer so allow for this. */
4227 3719 : if (kind_expr->ts.type != BT_INTEGER
4228 153 : && kind_expr->ts.type != BT_PROCEDURE)
4229 : {
4230 29 : gfc_error ("The parameter expression at %C must be of "
4231 : "INTEGER type and not %s type",
4232 : gfc_basic_typename (kind_expr->ts.type));
4233 29 : goto error_return;
4234 : }
4235 3690 : if (kind_expr->ts.type == BT_INTEGER && !ok)
4236 : {
4237 4 : gfc_error ("The parameter expression at %C does not "
4238 : "simplify to an INTEGER constant");
4239 4 : goto error_return;
4240 : }
4241 :
4242 3686 : tail->expr = gfc_copy_expr (kind_expr);
4243 : }
4244 :
4245 3984 : if (actual_param)
4246 3548 : tail->spec_type = actual_param->spec_type;
4247 :
4248 3984 : if (!param->attr.pdt_kind)
4249 : {
4250 1991 : if (!name_seen && actual_param)
4251 1222 : actual_param = actual_param->next;
4252 1991 : if (kind_expr)
4253 : {
4254 1695 : gfc_free_expr (kind_expr);
4255 1695 : kind_expr = NULL;
4256 : }
4257 1991 : continue;
4258 : }
4259 :
4260 1993 : if (actual_param
4261 1601 : && (actual_param->spec_type == SPEC_ASSUMED
4262 1601 : || actual_param->spec_type == SPEC_DEFERRED))
4263 : {
4264 2 : gfc_error ("The KIND parameter %qs at %C cannot either be "
4265 : "ASSUMED or DEFERRED", param->name);
4266 2 : goto error_return;
4267 : }
4268 :
4269 1991 : if (!kind_expr || !gfc_is_constant_expr (kind_expr))
4270 : {
4271 2 : gfc_error ("The value for the KIND parameter %qs at %C does not "
4272 : "reduce to a constant expression", param->name);
4273 2 : goto error_return;
4274 : }
4275 :
4276 : /* This can come about during the parsing of nested pdt_templates. An
4277 : error arises because the KIND parameter expression has not been
4278 : provided. Use the template instead of an incorrect instance. */
4279 1989 : if (kind_expr->expr_type != EXPR_CONSTANT
4280 1989 : || kind_expr->ts.type != BT_INTEGER)
4281 : {
4282 0 : gfc_free_actual_arglist (type_param_spec_list);
4283 0 : free (name);
4284 0 : return MATCH_YES;
4285 : }
4286 :
4287 1989 : char *kind_value = mpz_get_str (NULL, 10, kind_expr->value.integer);
4288 1989 : char *old_name = name;
4289 1989 : name = xasprintf ("%s_%s", old_name, kind_value);
4290 1989 : free (old_name);
4291 1989 : free (kind_value);
4292 :
4293 1989 : if (!name_seen && actual_param)
4294 958 : actual_param = actual_param->next;
4295 1989 : gfc_free_expr (kind_expr);
4296 : }
4297 :
4298 2867 : if (!name_seen && actual_param)
4299 : {
4300 2 : gfc_error ("The type parameter spec list at %C contains too many "
4301 : "parameter expressions");
4302 2 : goto error_return;
4303 : }
4304 :
4305 : /* Now we search for the PDT instance 'name'. If it doesn't exist, we
4306 : build it, using 'pdt' as a template. */
4307 2865 : if (gfc_get_symbol (name, pdt->ns, &instance))
4308 : {
4309 0 : gfc_error ("Parameterized derived type at %C is ambiguous");
4310 0 : goto error_return;
4311 : }
4312 :
4313 : /* If we are in an interface body, the instance will not have been imported.
4314 : Make sure that it is imported implicitly. */
4315 2865 : s = gfc_find_symtree (gfc_current_ns->sym_root, pdt->name);
4316 2865 : if (gfc_current_ns->proc_name
4317 2818 : && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY
4318 93 : && s && s->import_only && pdt->attr.imported)
4319 : {
4320 2 : s = gfc_find_symtree (gfc_current_ns->sym_root, instance->name);
4321 2 : if (!s)
4322 : {
4323 1 : gfc_get_sym_tree (instance->name, gfc_current_ns, &s, false,
4324 : &gfc_current_locus);
4325 1 : s->n.sym = instance;
4326 : }
4327 2 : s->n.sym->attr.imported = 1;
4328 2 : s->import_only = 1;
4329 : }
4330 :
4331 2865 : m = MATCH_YES;
4332 :
4333 2865 : if (instance->attr.flavor == FL_DERIVED
4334 2242 : && instance->attr.pdt_type
4335 2242 : && instance->components)
4336 : {
4337 2242 : instance->refs++;
4338 2242 : if (ext_param_list)
4339 1038 : *ext_param_list = type_param_spec_list;
4340 2242 : *sym = instance;
4341 2242 : gfc_commit_symbols ();
4342 2242 : free (name);
4343 2242 : return m;
4344 : }
4345 :
4346 : /* Start building the new instance of the parameterized type. */
4347 623 : gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at);
4348 623 : if (pdt->attr.use_assoc)
4349 114 : instance->module = pdt->module;
4350 623 : instance->attr.pdt_template = 0;
4351 623 : instance->attr.pdt_type = 1;
4352 623 : instance->declared_at = gfc_current_locus;
4353 :
4354 : /* In resolution, the finalizers are copied, according to the type of the
4355 : argument, to the instance finalizers. However, they are retained by the
4356 : template and procedures are freed there. */
4357 623 : if (pdt->f2k_derived && pdt->f2k_derived->finalizers)
4358 : {
4359 24 : instance->f2k_derived = gfc_get_namespace (NULL, 0);
4360 24 : instance->template_sym = pdt;
4361 24 : *instance->f2k_derived = *pdt->f2k_derived;
4362 : }
4363 :
4364 : /* Add the components, replacing the parameters in all expressions
4365 : with the expressions for their values in 'type_param_spec_list'. */
4366 623 : c1 = pdt->components;
4367 623 : tail = type_param_spec_list;
4368 2398 : for (; c1; c1 = c1->next)
4369 : {
4370 1777 : gfc_add_component (instance, c1->name, &c2);
4371 :
4372 1777 : c2->ts = c1->ts;
4373 1777 : c2->attr = c1->attr;
4374 1777 : if (c1->tb)
4375 : {
4376 6 : c2->tb = gfc_get_tbp ();
4377 6 : *c2->tb = *c1->tb;
4378 : }
4379 :
4380 : /* The order of declaration of the type_specs might not be the
4381 : same as that of the components. */
4382 1777 : if (c1->attr.pdt_kind || c1->attr.pdt_len)
4383 : {
4384 1262 : for (tail = type_param_spec_list; tail; tail = tail->next)
4385 1258 : if (strcmp (c1->name, tail->name) == 0)
4386 : break;
4387 : }
4388 :
4389 : /* Deal with type extension by recursively calling this function
4390 : to obtain the instance of the extended type. */
4391 1777 : if (gfc_current_state () != COMP_DERIVED
4392 1763 : && c1 == pdt->components
4393 610 : && c1->ts.type == BT_DERIVED
4394 78 : && c1->ts.u.derived
4395 1855 : && gfc_get_derived_super_type (*sym) == c2->ts.u.derived)
4396 : {
4397 78 : if (c1->ts.u.derived->attr.pdt_template)
4398 : {
4399 71 : gfc_formal_arglist *f;
4400 :
4401 71 : old_param_spec_list = type_param_spec_list;
4402 :
4403 : /* Obtain a spec list appropriate to the extended type..*/
4404 71 : actual_param = gfc_copy_actual_arglist (type_param_spec_list);
4405 71 : type_param_spec_list = actual_param;
4406 139 : for (f = c1->ts.u.derived->formal; f && f->next; f = f->next)
4407 68 : actual_param = actual_param->next;
4408 71 : if (actual_param)
4409 : {
4410 71 : gfc_free_actual_arglist (actual_param->next);
4411 71 : actual_param->next = NULL;
4412 : }
4413 :
4414 : /* Now obtain the PDT instance for the extended type. */
4415 71 : c2->param_list = type_param_spec_list;
4416 71 : m = gfc_get_pdt_instance (type_param_spec_list,
4417 : &c2->ts.u.derived,
4418 : &c2->param_list);
4419 71 : type_param_spec_list = old_param_spec_list;
4420 : }
4421 : else
4422 7 : c2->ts = c1->ts;
4423 :
4424 78 : c2->ts.u.derived->refs++;
4425 78 : gfc_set_sym_referenced (c2->ts.u.derived);
4426 :
4427 : /* If the component is allocatable or the parent has allocatable
4428 : components, make sure that the new instance also is marked as
4429 : having allocatable components. */
4430 78 : if (c2->attr.allocatable || c2->ts.u.derived->attr.alloc_comp)
4431 6 : instance->attr.alloc_comp = 1;
4432 :
4433 : /* Set extension level. */
4434 78 : if (c2->ts.u.derived->attr.extension == 255)
4435 : {
4436 : /* Since the extension field is 8 bit wide, we can only have
4437 : up to 255 extension levels. */
4438 0 : gfc_error ("Maximum extension level reached with type %qs at %L",
4439 : c2->ts.u.derived->name,
4440 : &c2->ts.u.derived->declared_at);
4441 0 : goto error_return;
4442 : }
4443 78 : instance->attr.extension = c2->ts.u.derived->attr.extension + 1;
4444 :
4445 78 : continue;
4446 78 : }
4447 :
4448 : /* Addressing PR82943, this will fix the issue where a function or
4449 : subroutine is declared as not a member of the PDT instance.
4450 : The reason for this is because the PDT instance did not have access
4451 : to its template's f2k_derived namespace in order to find the
4452 : typebound procedures.
4453 :
4454 : The number of references to the PDT template's f2k_derived will
4455 : ensure that f2k_derived is properly freed later on. */
4456 :
4457 1699 : if (!instance->f2k_derived && pdt->f2k_derived)
4458 : {
4459 592 : instance->f2k_derived = pdt->f2k_derived;
4460 592 : instance->f2k_derived->refs++;
4461 : }
4462 :
4463 : /* Set the component kind using the parameterized expression. */
4464 1699 : if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER)
4465 657 : && c1->kind_expr != NULL)
4466 : {
4467 446 : gfc_expr *e = gfc_copy_expr (c1->kind_expr);
4468 446 : gfc_insert_kind_parameter_exprs (e);
4469 446 : gfc_simplify_expr (e, 1);
4470 446 : gfc_extract_int (e, &c2->ts.kind);
4471 446 : gfc_free_expr (e);
4472 446 : if (gfc_validate_kind (c2->ts.type, c2->ts.kind, true) < 0)
4473 : {
4474 2 : gfc_error ("Kind %d not supported for type %s at %C",
4475 : c2->ts.kind, gfc_basic_typename (c2->ts.type));
4476 2 : goto error_return;
4477 : }
4478 444 : if (c2->attr.proc_pointer && c2->attr.function
4479 0 : && c1->ts.interface && c1->ts.interface->ts.kind == 0)
4480 : {
4481 0 : c2->ts.interface = gfc_new_symbol ("", gfc_current_ns);
4482 0 : c2->ts.interface->result = c2->ts.interface;
4483 0 : c2->ts.interface->ts = c2->ts;
4484 0 : c2->ts.interface->attr.flavor = FL_PROCEDURE;
4485 0 : c2->ts.interface->attr.function = 1;
4486 0 : c2->attr.function = 1;
4487 0 : c2->attr.if_source = IFSRC_UNKNOWN;
4488 : }
4489 : }
4490 :
4491 : /* Set up either the KIND/LEN initializer, if constant,
4492 : or the parameterized expression. Use the template
4493 : initializer if one is not already set in this instance. */
4494 1697 : if (c2->attr.pdt_kind || c2->attr.pdt_len)
4495 : {
4496 826 : if (tail && tail->expr && gfc_is_constant_expr (tail->expr))
4497 674 : c2->initializer = gfc_copy_expr (tail->expr);
4498 152 : else if (tail && tail->expr)
4499 : {
4500 34 : c2->param_list = gfc_get_actual_arglist ();
4501 34 : c2->param_list->name = tail->name;
4502 34 : c2->param_list->expr = gfc_copy_expr (tail->expr);
4503 34 : c2->param_list->next = NULL;
4504 : }
4505 :
4506 : /* Initializer expressions in PDT templates, such as character_kinds(1),
4507 : can end up being mutilated when use associated. Simplify now. */
4508 826 : if (c1->initializer && c1->initializer->expr_type != EXPR_CONSTANT)
4509 154 : gfc_simplify_expr (c1->initializer, 1);
4510 :
4511 826 : if (!c2->initializer && c1->initializer)
4512 24 : c2->initializer = gfc_copy_expr (c1->initializer);
4513 :
4514 826 : if (c2->initializer)
4515 698 : gfc_insert_parameter_exprs (c2->initializer, type_param_spec_list);
4516 : }
4517 :
4518 : /* Copy the array spec. */
4519 1697 : c2->as = gfc_copy_array_spec (c1->as);
4520 1697 : if (c1->ts.type == BT_CLASS)
4521 0 : CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as);
4522 :
4523 1697 : if (c1->attr.allocatable)
4524 82 : alloc_seen = true;
4525 :
4526 1697 : if (c1->attr.pointer)
4527 20 : ptr_seen = true;
4528 :
4529 : /* Determine if an array spec is parameterized. If so, substitute
4530 : in the parameter expressions for the bounds and set the pdt_array
4531 : attribute. Notice that this attribute must be unconditionally set
4532 : if this is an array of parameterized character length. */
4533 1697 : if (c1->as && c1->as->type == AS_EXPLICIT)
4534 : {
4535 : bool pdt_array = false;
4536 658 : bool all_constant = true;
4537 :
4538 : /* Are the bounds of the array parameterized? */
4539 658 : for (i = 0; i < c1->as->rank; i++)
4540 : {
4541 377 : if (gfc_derived_parameter_expr (c1->as->lower[i]))
4542 6 : pdt_array = true;
4543 377 : if (gfc_derived_parameter_expr (c1->as->upper[i]))
4544 297 : pdt_array = true;
4545 : }
4546 :
4547 : /* If they are, free the expressions for the bounds and
4548 : replace them with the template expressions with substitute
4549 : values. */
4550 578 : for (i = 0; pdt_array && i < c1->as->rank; i++)
4551 : {
4552 297 : gfc_expr *e;
4553 297 : e = gfc_copy_expr (c1->as->lower[i]);
4554 297 : gfc_insert_kind_parameter_exprs (e);
4555 297 : if (gfc_simplify_expr (e, 1))
4556 297 : gfc_replace_expr (c2->as->lower[i], e);
4557 : else
4558 0 : gfc_free_expr (e);
4559 297 : if (c2->as->lower[i]->expr_type != EXPR_CONSTANT)
4560 6 : all_constant = false;
4561 297 : e = gfc_copy_expr (c1->as->upper[i]);
4562 297 : gfc_insert_kind_parameter_exprs (e);
4563 297 : if (gfc_simplify_expr (e, 1))
4564 297 : gfc_replace_expr (c2->as->upper[i], e);
4565 : else
4566 0 : gfc_free_expr (e);
4567 297 : if (c2->as->upper[i]->expr_type != EXPR_CONSTANT)
4568 295 : all_constant = false;
4569 : }
4570 :
4571 281 : c2->attr.pdt_array = all_constant ? 0 : 1;
4572 281 : if (c1->initializer)
4573 : {
4574 7 : c2->initializer = gfc_copy_expr (c1->initializer);
4575 7 : gfc_insert_kind_parameter_exprs (c2->initializer);
4576 7 : gfc_simplify_expr (c2->initializer, 1);
4577 : }
4578 : }
4579 :
4580 : /* Similarly, set the string length if parameterized. */
4581 1697 : if (c1->ts.type == BT_CHARACTER
4582 177 : && c1->ts.u.cl->length
4583 1873 : && gfc_derived_parameter_expr (c1->ts.u.cl->length))
4584 : {
4585 140 : gfc_expr *e;
4586 140 : e = gfc_copy_expr (c1->ts.u.cl->length);
4587 140 : gfc_insert_kind_parameter_exprs (e);
4588 140 : if (gfc_simplify_expr (e, 1))
4589 140 : gfc_replace_expr (c2->ts.u.cl->length, e);
4590 : else
4591 0 : gfc_free_expr (e);
4592 140 : if (c2->ts.u.cl->length->expr_type != EXPR_CONSTANT)
4593 137 : c2->attr.pdt_string = 1;
4594 140 : if (c1->as && c1->as->type == AS_EXPLICIT)
4595 48 : c2->attr.pdt_array = 1;
4596 92 : else if (c1->attr.allocatable)
4597 6 : c2->ts.deferred = 1;
4598 : }
4599 :
4600 : /* Recurse into this function for PDT components. */
4601 1697 : if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS)
4602 131 : && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template)
4603 : {
4604 123 : gfc_actual_arglist *params;
4605 : /* The component in the template has a list of specification
4606 : expressions derived from its declaration. */
4607 123 : params = gfc_copy_actual_arglist (c1->param_list);
4608 123 : actual_param = params;
4609 : /* Substitute the template parameters with the expressions
4610 : from the specification list. */
4611 384 : for (;actual_param; actual_param = actual_param->next)
4612 : {
4613 138 : gfc_correct_parm_expr (pdt, &actual_param->expr);
4614 138 : gfc_insert_parameter_exprs (actual_param->expr,
4615 : type_param_spec_list);
4616 : }
4617 :
4618 : /* Now obtain the PDT instance for the component. */
4619 123 : old_param_spec_list = type_param_spec_list;
4620 246 : m = gfc_get_pdt_instance (params, &c2->ts.u.derived,
4621 123 : &c2->param_list);
4622 123 : type_param_spec_list = old_param_spec_list;
4623 :
4624 123 : if (!(c2->attr.pointer || c2->attr.allocatable))
4625 : {
4626 83 : if (!c1->initializer
4627 58 : || c1->initializer->expr_type != EXPR_FUNCTION)
4628 82 : c2->initializer = gfc_default_initializer (&c2->ts);
4629 : else
4630 : {
4631 1 : gfc_symtree *s;
4632 1 : c2->initializer = gfc_copy_expr (c1->initializer);
4633 1 : s = gfc_find_symtree (pdt->ns->sym_root,
4634 1 : gfc_dt_lower_string (c2->ts.u.derived->name));
4635 1 : if (s)
4636 0 : c2->initializer->symtree = s;
4637 1 : c2->initializer->ts = c2->ts;
4638 1 : if (!s)
4639 1 : gfc_insert_parameter_exprs (c2->initializer,
4640 : type_param_spec_list);
4641 1 : gfc_simplify_expr (c2->initializer, 1);
4642 : }
4643 : }
4644 :
4645 123 : if (c2->attr.allocatable
4646 91 : || (c2->ts.type == BT_DERIVED && c2->ts.u.derived
4647 91 : && c2->ts.u.derived->attr.alloc_comp && !c2->attr.pointer))
4648 61 : instance->attr.alloc_comp = 1;
4649 : }
4650 1574 : else if (!(c2->attr.pdt_kind || c2->attr.pdt_len || c2->attr.pdt_string
4651 611 : || c2->attr.pdt_array) && c1->initializer)
4652 : {
4653 44 : c2->initializer = gfc_copy_expr (c1->initializer);
4654 44 : if (c2->initializer->ts.type == BT_UNKNOWN)
4655 12 : c2->initializer->ts = c2->ts;
4656 44 : gfc_insert_parameter_exprs (c2->initializer, type_param_spec_list);
4657 : /* The template initializers are parsed using gfc_match_expr rather
4658 : than gfc_match_init_expr. Apply the missing reduction to the
4659 : PDT instance initializers. */
4660 44 : if (!gfc_reduce_init_expr (c2->initializer))
4661 : {
4662 0 : gfc_free_expr (c2->initializer);
4663 0 : goto error_return;
4664 : }
4665 44 : gfc_simplify_expr (c2->initializer, 1);
4666 : }
4667 :
4668 : /* Pick up any remaining initializers that could be simplified. */
4669 1697 : if (c1->initializer)
4670 : {
4671 451 : if (!c2->initializer)
4672 25 : c2->initializer = gfc_copy_expr (c1->initializer);
4673 451 : if (gfc_derived_parameter_expr (c2->initializer))
4674 0 : gfc_insert_parameter_exprs (c2->initializer, type_param_spec_list);
4675 451 : c2->initializer->ts = c2->ts;
4676 451 : if (!!gfc_is_constant_expr (c2->initializer))
4677 432 : gfc_simplify_expr (c2->initializer, 1);
4678 : }
4679 : }
4680 :
4681 621 : if (alloc_seen)
4682 79 : instance->attr.alloc_comp = 1;
4683 621 : if (ptr_seen)
4684 20 : instance->attr.pointer_comp = 1;
4685 :
4686 :
4687 621 : gfc_commit_symbol (instance);
4688 621 : if (ext_param_list)
4689 402 : *ext_param_list = type_param_spec_list;
4690 621 : *sym = instance;
4691 621 : free (name);
4692 621 : return m;
4693 :
4694 72 : error_return:
4695 72 : gfc_free_actual_arglist (type_param_spec_list);
4696 72 : free (name);
4697 72 : return MATCH_ERROR;
4698 : }
4699 :
4700 :
4701 : /* Match a legacy nonstandard BYTE type-spec. */
4702 :
4703 : static match
4704 1204913 : match_byte_typespec (gfc_typespec *ts)
4705 : {
4706 1204913 : if (gfc_match (" byte") == MATCH_YES)
4707 : {
4708 33 : if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C"))
4709 : return MATCH_ERROR;
4710 :
4711 31 : if (gfc_current_form == FORM_FREE)
4712 : {
4713 19 : char c = gfc_peek_ascii_char ();
4714 19 : if (!gfc_is_whitespace (c) && c != ',')
4715 : return MATCH_NO;
4716 : }
4717 :
4718 29 : if (gfc_validate_kind (BT_INTEGER, 1, true) < 0)
4719 : {
4720 0 : gfc_error ("BYTE type used at %C "
4721 : "is not available on the target machine");
4722 0 : return MATCH_ERROR;
4723 : }
4724 :
4725 29 : ts->type = BT_INTEGER;
4726 29 : ts->kind = 1;
4727 29 : return MATCH_YES;
4728 : }
4729 : return MATCH_NO;
4730 : }
4731 :
4732 :
4733 : /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts
4734 : structure to the matched specification. This is necessary for FUNCTION and
4735 : IMPLICIT statements.
4736 :
4737 : If implicit_flag is nonzero, then we don't check for the optional
4738 : kind specification. Not doing so is needed for matching an IMPLICIT
4739 : statement correctly. */
4740 :
4741 : match
4742 1204913 : gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag)
4743 : {
4744 : /* Provide sufficient space to hold "pdtsymbol". */
4745 1204913 : char *name = XALLOCAVEC (char, GFC_MAX_SYMBOL_LEN + 1);
4746 1204913 : gfc_symbol *sym, *dt_sym;
4747 1204913 : match m;
4748 1204913 : char c;
4749 1204913 : bool seen_deferred_kind, matched_type;
4750 1204913 : const char *dt_name;
4751 :
4752 1204913 : decl_type_param_list = NULL;
4753 :
4754 : /* A belt and braces check that the typespec is correctly being treated
4755 : as a deferred characteristic association. */
4756 2409826 : seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION)
4757 84836 : && (gfc_current_block ()->result->ts.kind == -1)
4758 1216873 : && (ts->kind == -1);
4759 1204913 : gfc_clear_ts (ts);
4760 1204913 : if (seen_deferred_kind)
4761 9725 : ts->kind = -1;
4762 :
4763 : /* Clear the current binding label, in case one is given. */
4764 1204913 : curr_binding_label = NULL;
4765 :
4766 : /* Match BYTE type-spec. */
4767 1204913 : m = match_byte_typespec (ts);
4768 1204913 : if (m != MATCH_NO)
4769 : return m;
4770 :
4771 1204882 : m = gfc_match (" type (");
4772 1204882 : matched_type = (m == MATCH_YES);
4773 1204882 : if (matched_type)
4774 : {
4775 32085 : gfc_gobble_whitespace ();
4776 32085 : if (gfc_peek_ascii_char () == '*')
4777 : {
4778 5617 : if ((m = gfc_match ("* ) ")) != MATCH_YES)
4779 : return m;
4780 5617 : if (gfc_comp_struct (gfc_current_state ()))
4781 : {
4782 2 : gfc_error ("Assumed type at %C is not allowed for components");
4783 2 : return MATCH_ERROR;
4784 : }
4785 5615 : if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C"))
4786 : return MATCH_ERROR;
4787 5613 : ts->type = BT_ASSUMED;
4788 5613 : return MATCH_YES;
4789 : }
4790 :
4791 26468 : m = gfc_match ("%n", name);
4792 26468 : matched_type = (m == MATCH_YES);
4793 : }
4794 :
4795 26468 : if ((matched_type && strcmp ("integer", name) == 0)
4796 1199265 : || (!matched_type && gfc_match (" integer") == MATCH_YES))
4797 : {
4798 113745 : ts->type = BT_INTEGER;
4799 113745 : ts->kind = gfc_default_integer_kind;
4800 113745 : goto get_kind;
4801 : }
4802 :
4803 1085520 : if (flag_unsigned)
4804 : {
4805 0 : if ((matched_type && strcmp ("unsigned", name) == 0)
4806 22489 : || (!matched_type && gfc_match (" unsigned") == MATCH_YES))
4807 : {
4808 1036 : ts->type = BT_UNSIGNED;
4809 1036 : ts->kind = gfc_default_integer_kind;
4810 1036 : goto get_kind;
4811 : }
4812 : }
4813 :
4814 26462 : if ((matched_type && strcmp ("character", name) == 0)
4815 1084484 : || (!matched_type && gfc_match (" character") == MATCH_YES))
4816 : {
4817 29395 : if (matched_type
4818 29395 : && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
4819 : "intrinsic-type-spec at %C"))
4820 : return MATCH_ERROR;
4821 :
4822 29394 : ts->type = BT_CHARACTER;
4823 29394 : if (implicit_flag == 0)
4824 29288 : m = gfc_match_char_spec (ts);
4825 : else
4826 : m = MATCH_YES;
4827 :
4828 29394 : if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES)
4829 : {
4830 1 : gfc_error ("Malformed type-spec at %C");
4831 1 : return MATCH_ERROR;
4832 : }
4833 :
4834 : return m;
4835 : }
4836 :
4837 26458 : if ((matched_type && strcmp ("real", name) == 0)
4838 1055089 : || (!matched_type && gfc_match (" real") == MATCH_YES))
4839 : {
4840 30567 : ts->type = BT_REAL;
4841 30567 : ts->kind = gfc_default_real_kind;
4842 30567 : goto get_kind;
4843 : }
4844 :
4845 1024522 : if ((matched_type
4846 26455 : && (strcmp ("doubleprecision", name) == 0
4847 26454 : || (strcmp ("double", name) == 0
4848 5 : && gfc_match (" precision") == MATCH_YES)))
4849 1024522 : || (!matched_type && gfc_match (" double precision") == MATCH_YES))
4850 : {
4851 2614 : if (matched_type
4852 2614 : && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
4853 : "intrinsic-type-spec at %C"))
4854 : return MATCH_ERROR;
4855 :
4856 2613 : if (matched_type && gfc_match_char (')') != MATCH_YES)
4857 : {
4858 2 : gfc_error ("Malformed type-spec at %C");
4859 2 : return MATCH_ERROR;
4860 : }
4861 :
4862 2611 : ts->type = BT_REAL;
4863 2611 : ts->kind = gfc_default_double_kind;
4864 2611 : return MATCH_YES;
4865 : }
4866 :
4867 26451 : if ((matched_type && strcmp ("complex", name) == 0)
4868 1021908 : || (!matched_type && gfc_match (" complex") == MATCH_YES))
4869 : {
4870 4153 : ts->type = BT_COMPLEX;
4871 4153 : ts->kind = gfc_default_complex_kind;
4872 4153 : goto get_kind;
4873 : }
4874 :
4875 1017755 : if ((matched_type
4876 26451 : && (strcmp ("doublecomplex", name) == 0
4877 26450 : || (strcmp ("double", name) == 0
4878 2 : && gfc_match (" complex") == MATCH_YES)))
4879 1017755 : || (!matched_type && gfc_match (" double complex") == MATCH_YES))
4880 : {
4881 204 : if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C"))
4882 : return MATCH_ERROR;
4883 :
4884 203 : if (matched_type
4885 203 : && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
4886 : "intrinsic-type-spec at %C"))
4887 : return MATCH_ERROR;
4888 :
4889 203 : if (matched_type && gfc_match_char (')') != MATCH_YES)
4890 : {
4891 2 : gfc_error ("Malformed type-spec at %C");
4892 2 : return MATCH_ERROR;
4893 : }
4894 :
4895 201 : ts->type = BT_COMPLEX;
4896 201 : ts->kind = gfc_default_double_kind;
4897 201 : return MATCH_YES;
4898 : }
4899 :
4900 26448 : if ((matched_type && strcmp ("logical", name) == 0)
4901 1017551 : || (!matched_type && gfc_match (" logical") == MATCH_YES))
4902 : {
4903 11640 : ts->type = BT_LOGICAL;
4904 11640 : ts->kind = gfc_default_logical_kind;
4905 11640 : goto get_kind;
4906 : }
4907 :
4908 1005911 : if (matched_type)
4909 : {
4910 26445 : m = gfc_match_actual_arglist (1, &decl_type_param_list, true);
4911 26445 : if (m == MATCH_ERROR)
4912 : return m;
4913 :
4914 26445 : gfc_gobble_whitespace ();
4915 26445 : if (gfc_peek_ascii_char () != ')')
4916 : {
4917 1 : gfc_error ("Malformed type-spec at %C");
4918 1 : return MATCH_ERROR;
4919 : }
4920 26444 : m = gfc_match_char (')'); /* Burn closing ')'. */
4921 : }
4922 :
4923 1005910 : if (m != MATCH_YES)
4924 979466 : m = match_record_decl (name);
4925 :
4926 1005910 : if (matched_type || m == MATCH_YES)
4927 : {
4928 26788 : ts->type = BT_DERIVED;
4929 : /* We accept record/s/ or type(s) where s is a structure, but we
4930 : * don't need all the extra derived-type stuff for structures. */
4931 26788 : if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym))
4932 : {
4933 1 : gfc_error ("Type name %qs at %C is ambiguous", name);
4934 1 : return MATCH_ERROR;
4935 : }
4936 :
4937 26787 : if (sym && sym->attr.flavor == FL_DERIVED
4938 25637 : && sym->attr.pdt_template
4939 1120 : && gfc_current_state () != COMP_DERIVED)
4940 : {
4941 1005 : m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL);
4942 1005 : if (m != MATCH_YES)
4943 : return m;
4944 990 : gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type);
4945 990 : ts->u.derived = sym;
4946 990 : const char* lower = gfc_dt_lower_string (sym->name);
4947 990 : size_t len = strlen (lower);
4948 : /* Reallocate with sufficient size. */
4949 990 : if (len > GFC_MAX_SYMBOL_LEN)
4950 2 : name = XALLOCAVEC (char, len + 1);
4951 990 : memcpy (name, lower, len);
4952 990 : name[len] = '\0';
4953 : }
4954 :
4955 26772 : if (sym && sym->attr.flavor == FL_STRUCT)
4956 : {
4957 361 : ts->u.derived = sym;
4958 361 : return MATCH_YES;
4959 : }
4960 : /* Actually a derived type. */
4961 : }
4962 :
4963 : else
4964 : {
4965 : /* Match nested STRUCTURE declarations; only valid within another
4966 : structure declaration. */
4967 979122 : if (flag_dec_structure
4968 8032 : && (gfc_current_state () == COMP_STRUCTURE
4969 7570 : || gfc_current_state () == COMP_MAP))
4970 : {
4971 732 : m = gfc_match (" structure");
4972 732 : if (m == MATCH_YES)
4973 : {
4974 27 : m = gfc_match_structure_decl ();
4975 27 : if (m == MATCH_YES)
4976 : {
4977 : /* gfc_new_block is updated by match_structure_decl. */
4978 26 : ts->type = BT_DERIVED;
4979 26 : ts->u.derived = gfc_new_block;
4980 26 : return MATCH_YES;
4981 : }
4982 : }
4983 706 : if (m == MATCH_ERROR)
4984 : return MATCH_ERROR;
4985 : }
4986 :
4987 : /* Match CLASS declarations. */
4988 979095 : m = gfc_match (" class ( * )");
4989 979095 : if (m == MATCH_ERROR)
4990 : return MATCH_ERROR;
4991 979095 : else if (m == MATCH_YES)
4992 : {
4993 2021 : gfc_symbol *upe;
4994 2021 : gfc_symtree *st;
4995 2021 : ts->type = BT_CLASS;
4996 2021 : gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe);
4997 2021 : if (upe == NULL)
4998 : {
4999 1219 : upe = gfc_new_symbol ("STAR", gfc_current_ns);
5000 1219 : st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR");
5001 1219 : st->n.sym = upe;
5002 1219 : gfc_set_sym_referenced (upe);
5003 1219 : upe->refs++;
5004 1219 : upe->ts.type = BT_VOID;
5005 1219 : upe->attr.unlimited_polymorphic = 1;
5006 : /* This is essential to force the construction of
5007 : unlimited polymorphic component class containers. */
5008 1219 : upe->attr.zero_comp = 1;
5009 1219 : if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL,
5010 : &gfc_current_locus))
5011 : return MATCH_ERROR;
5012 : }
5013 : else
5014 : {
5015 802 : st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR");
5016 802 : st->n.sym = upe;
5017 802 : upe->refs++;
5018 : }
5019 2021 : ts->u.derived = upe;
5020 2021 : return m;
5021 : }
5022 :
5023 977074 : m = gfc_match (" class (");
5024 :
5025 977074 : if (m == MATCH_YES)
5026 9247 : m = gfc_match ("%n", name);
5027 : else
5028 : return m;
5029 :
5030 9247 : if (m != MATCH_YES)
5031 : return m;
5032 9247 : ts->type = BT_CLASS;
5033 :
5034 9247 : if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C"))
5035 : return MATCH_ERROR;
5036 :
5037 9246 : m = gfc_match_actual_arglist (1, &decl_type_param_list, true);
5038 9246 : if (m == MATCH_ERROR)
5039 : return m;
5040 :
5041 9246 : m = gfc_match_char (')');
5042 9246 : if (m != MATCH_YES)
5043 : return m;
5044 : }
5045 :
5046 : /* This picks up function declarations with a PDT typespec. Since a
5047 : pdt_type has been generated, there is no more to do. Within the
5048 : function body, this type must be used for the typespec so that
5049 : the "being used before it is defined warning" does not arise. */
5050 35657 : if (ts->type == BT_DERIVED
5051 26411 : && sym && sym->attr.pdt_type
5052 36647 : && (gfc_current_state () == COMP_CONTAINS
5053 974 : || (gfc_current_state () == COMP_FUNCTION
5054 286 : && gfc_current_block ()->ts.type == BT_DERIVED
5055 60 : && gfc_current_block ()->ts.u.derived == sym
5056 30 : && !gfc_find_symtree (gfc_current_ns->sym_root,
5057 : sym->name))))
5058 : {
5059 42 : if (gfc_current_state () == COMP_FUNCTION)
5060 : {
5061 26 : gfc_symtree *pdt_st;
5062 26 : pdt_st = gfc_new_symtree (&gfc_current_ns->sym_root,
5063 : sym->name);
5064 26 : pdt_st->n.sym = sym;
5065 26 : sym->refs++;
5066 : }
5067 42 : ts->u.derived = sym;
5068 42 : return MATCH_YES;
5069 : }
5070 :
5071 : /* Defer association of the derived type until the end of the
5072 : specification block. However, if the derived type can be
5073 : found, add it to the typespec. */
5074 35615 : if (gfc_matching_function)
5075 : {
5076 1044 : ts->u.derived = NULL;
5077 1044 : if (gfc_current_state () != COMP_INTERFACE
5078 1044 : && !gfc_find_symbol (name, NULL, 1, &sym) && sym)
5079 : {
5080 513 : sym = gfc_find_dt_in_generic (sym);
5081 513 : ts->u.derived = sym;
5082 : }
5083 : return MATCH_YES;
5084 : }
5085 :
5086 : /* Search for the name but allow the components to be defined later. If
5087 : type = -1, this typespec has been seen in a function declaration but
5088 : the type could not be accessed at that point. The actual derived type is
5089 : stored in a symtree with the first letter of the name capitalized; the
5090 : symtree with the all lower-case name contains the associated
5091 : generic function. */
5092 34571 : dt_name = gfc_dt_upper_string (name);
5093 34571 : sym = NULL;
5094 34571 : dt_sym = NULL;
5095 34571 : if (ts->kind != -1)
5096 : {
5097 33358 : gfc_get_ha_symbol (name, &sym);
5098 33358 : if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym))
5099 : {
5100 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5101 0 : return MATCH_ERROR;
5102 : }
5103 33358 : if (sym->generic && !dt_sym)
5104 14620 : dt_sym = gfc_find_dt_in_generic (sym);
5105 :
5106 : /* Host associated PDTs can get confused with their constructors
5107 : because they are instantiated in the template's namespace. */
5108 33358 : if (!dt_sym)
5109 : {
5110 1052 : if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym))
5111 : {
5112 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5113 0 : return MATCH_ERROR;
5114 : }
5115 1052 : if (dt_sym && !dt_sym->attr.pdt_type)
5116 0 : dt_sym = NULL;
5117 : }
5118 : }
5119 1213 : else if (ts->kind == -1)
5120 : {
5121 2426 : int iface = gfc_state_stack->previous->state != COMP_INTERFACE
5122 1213 : || gfc_current_ns->has_import_set;
5123 1213 : gfc_find_symbol (name, NULL, iface, &sym);
5124 1213 : if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym))
5125 : {
5126 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5127 0 : return MATCH_ERROR;
5128 : }
5129 1213 : if (sym && sym->generic && !dt_sym)
5130 2 : dt_sym = gfc_find_dt_in_generic (sym);
5131 :
5132 1213 : ts->kind = 0;
5133 1213 : if (sym == NULL)
5134 : return MATCH_NO;
5135 : }
5136 :
5137 34554 : if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT
5138 33736 : && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic))
5139 34552 : || sym->attr.subroutine)
5140 : {
5141 2 : gfc_error ("Type name %qs at %C conflicts with previously declared "
5142 : "entity at %L, which has the same name", name,
5143 : &sym->declared_at);
5144 2 : return MATCH_ERROR;
5145 : }
5146 :
5147 34552 : if (dt_sym && decl_type_param_list
5148 1012 : && dt_sym->attr.flavor == FL_DERIVED
5149 1012 : && !dt_sym->attr.pdt_type
5150 250 : && !dt_sym->attr.pdt_template)
5151 : {
5152 1 : gfc_error ("Type %qs is not parameterized and so the type parameter spec "
5153 : "list at %C may not appear", dt_sym->name);
5154 1 : return MATCH_ERROR;
5155 : }
5156 :
5157 34551 : if (sym && sym->attr.flavor == FL_DERIVED
5158 : && sym->attr.pdt_template
5159 : && gfc_current_state () != COMP_DERIVED)
5160 : {
5161 : m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL);
5162 : if (m != MATCH_YES)
5163 : return m;
5164 : gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type);
5165 : ts->u.derived = sym;
5166 : strcpy (name, gfc_dt_lower_string (sym->name));
5167 : }
5168 :
5169 34551 : gfc_save_symbol_data (sym);
5170 34551 : gfc_set_sym_referenced (sym);
5171 34551 : if (!sym->attr.generic
5172 34551 : && !gfc_add_generic (&sym->attr, sym->name, NULL))
5173 : return MATCH_ERROR;
5174 :
5175 34551 : if (!sym->attr.function
5176 34551 : && !gfc_add_function (&sym->attr, sym->name, NULL))
5177 : return MATCH_ERROR;
5178 :
5179 34551 : if (dt_sym && dt_sym->attr.flavor == FL_DERIVED
5180 34419 : && dt_sym->attr.pdt_template
5181 260 : && gfc_current_state () != COMP_DERIVED)
5182 : {
5183 133 : m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL);
5184 133 : if (m != MATCH_YES)
5185 : return m;
5186 133 : gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type);
5187 : }
5188 :
5189 34551 : if (!dt_sym)
5190 : {
5191 132 : gfc_interface *intr, *head;
5192 :
5193 : /* Use upper case to save the actual derived-type symbol. */
5194 132 : gfc_get_symbol (dt_name, NULL, &dt_sym);
5195 132 : dt_sym->name = gfc_get_string ("%s", sym->name);
5196 132 : head = sym->generic;
5197 132 : intr = gfc_get_interface ();
5198 132 : intr->sym = dt_sym;
5199 132 : intr->where = gfc_current_locus;
5200 132 : intr->next = head;
5201 132 : sym->generic = intr;
5202 132 : sym->attr.if_source = IFSRC_DECL;
5203 : }
5204 : else
5205 34419 : gfc_save_symbol_data (dt_sym);
5206 :
5207 34551 : gfc_set_sym_referenced (dt_sym);
5208 :
5209 132 : if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT
5210 34683 : && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL))
5211 : return MATCH_ERROR;
5212 :
5213 34551 : ts->u.derived = dt_sym;
5214 :
5215 34551 : return MATCH_YES;
5216 :
5217 161141 : get_kind:
5218 161141 : if (matched_type
5219 161141 : && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
5220 : "intrinsic-type-spec at %C"))
5221 : return MATCH_ERROR;
5222 :
5223 : /* For all types except double, derived and character, look for an
5224 : optional kind specifier. MATCH_NO is actually OK at this point. */
5225 161138 : if (implicit_flag == 1)
5226 : {
5227 223 : if (matched_type && gfc_match_char (')') != MATCH_YES)
5228 : return MATCH_ERROR;
5229 :
5230 : return MATCH_YES;
5231 : }
5232 :
5233 160915 : if (gfc_current_form == FORM_FREE)
5234 : {
5235 145700 : c = gfc_peek_ascii_char ();
5236 145700 : if (!gfc_is_whitespace (c) && c != '*' && c != '('
5237 72037 : && c != ':' && c != ',')
5238 : {
5239 167 : if (matched_type && c == ')')
5240 : {
5241 3 : gfc_next_ascii_char ();
5242 3 : return MATCH_YES;
5243 : }
5244 164 : gfc_error ("Malformed type-spec at %C");
5245 164 : return MATCH_NO;
5246 : }
5247 : }
5248 :
5249 160748 : m = gfc_match_kind_spec (ts, false);
5250 160748 : if (m == MATCH_ERROR)
5251 : return MATCH_ERROR;
5252 :
5253 160712 : if (m == MATCH_NO && ts->type != BT_CHARACTER)
5254 : {
5255 109206 : m = gfc_match_old_kind_spec (ts);
5256 109206 : if (gfc_validate_kind (ts->type, ts->kind, true) == -1)
5257 : return MATCH_ERROR;
5258 : }
5259 :
5260 160704 : if (matched_type && gfc_match_char (')') != MATCH_YES)
5261 : {
5262 0 : gfc_error ("Malformed type-spec at %C");
5263 0 : return MATCH_ERROR;
5264 : }
5265 :
5266 : /* Defer association of the KIND expression of function results
5267 : until after USE and IMPORT statements. */
5268 4450 : if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ())
5269 165127 : || gfc_matching_function)
5270 : return MATCH_YES;
5271 :
5272 153414 : if (m == MATCH_NO)
5273 154495 : m = MATCH_YES; /* No kind specifier found. */
5274 :
5275 : return m;
5276 : }
5277 :
5278 :
5279 : /* Match an IMPLICIT NONE statement. Actually, this statement is
5280 : already matched in parse.cc, or we would not end up here in the
5281 : first place. So the only thing we need to check, is if there is
5282 : trailing garbage. If not, the match is successful. */
5283 :
5284 : match
5285 24488 : gfc_match_implicit_none (void)
5286 : {
5287 24488 : char c;
5288 24488 : match m;
5289 24488 : char name[GFC_MAX_SYMBOL_LEN + 1];
5290 24488 : bool type = false;
5291 24488 : bool external = false;
5292 24488 : locus cur_loc = gfc_current_locus;
5293 :
5294 24488 : if (gfc_current_ns->seen_implicit_none
5295 24486 : || gfc_current_ns->has_implicit_none_export)
5296 : {
5297 4 : gfc_error ("Duplicate IMPLICIT NONE statement at %C");
5298 4 : return MATCH_ERROR;
5299 : }
5300 :
5301 24484 : gfc_gobble_whitespace ();
5302 24484 : c = gfc_peek_ascii_char ();
5303 24484 : if (c == '(')
5304 : {
5305 1109 : (void) gfc_next_ascii_char ();
5306 1109 : if (!gfc_notify_std (GFC_STD_F2018, "IMPLICIT NONE with spec list at %C"))
5307 : return MATCH_ERROR;
5308 :
5309 1108 : gfc_gobble_whitespace ();
5310 1108 : if (gfc_peek_ascii_char () == ')')
5311 : {
5312 1 : (void) gfc_next_ascii_char ();
5313 1 : type = true;
5314 : }
5315 : else
5316 3297 : for(;;)
5317 : {
5318 2202 : m = gfc_match (" %n", name);
5319 2202 : if (m != MATCH_YES)
5320 : return MATCH_ERROR;
5321 :
5322 2202 : if (strcmp (name, "type") == 0)
5323 : type = true;
5324 1107 : else if (strcmp (name, "external") == 0)
5325 : external = true;
5326 : else
5327 : return MATCH_ERROR;
5328 :
5329 2202 : gfc_gobble_whitespace ();
5330 2202 : c = gfc_next_ascii_char ();
5331 2202 : if (c == ',')
5332 1095 : continue;
5333 1107 : if (c == ')')
5334 : break;
5335 : return MATCH_ERROR;
5336 : }
5337 : }
5338 : else
5339 : type = true;
5340 :
5341 24483 : if (gfc_match_eos () != MATCH_YES)
5342 : return MATCH_ERROR;
5343 :
5344 24483 : gfc_set_implicit_none (type, external, &cur_loc);
5345 :
5346 24483 : return MATCH_YES;
5347 : }
5348 :
5349 :
5350 : /* Match the letter range(s) of an IMPLICIT statement. */
5351 :
5352 : static match
5353 600 : match_implicit_range (void)
5354 : {
5355 600 : char c, c1, c2;
5356 600 : int inner;
5357 600 : locus cur_loc;
5358 :
5359 600 : cur_loc = gfc_current_locus;
5360 :
5361 600 : gfc_gobble_whitespace ();
5362 600 : c = gfc_next_ascii_char ();
5363 600 : if (c != '(')
5364 : {
5365 59 : gfc_error ("Missing character range in IMPLICIT at %C");
5366 59 : goto bad;
5367 : }
5368 :
5369 : inner = 1;
5370 1195 : while (inner)
5371 : {
5372 722 : gfc_gobble_whitespace ();
5373 722 : c1 = gfc_next_ascii_char ();
5374 722 : if (!ISALPHA (c1))
5375 33 : goto bad;
5376 :
5377 689 : gfc_gobble_whitespace ();
5378 689 : c = gfc_next_ascii_char ();
5379 :
5380 689 : switch (c)
5381 : {
5382 201 : case ')':
5383 201 : inner = 0; /* Fall through. */
5384 :
5385 : case ',':
5386 : c2 = c1;
5387 : break;
5388 :
5389 439 : case '-':
5390 439 : gfc_gobble_whitespace ();
5391 439 : c2 = gfc_next_ascii_char ();
5392 439 : if (!ISALPHA (c2))
5393 0 : goto bad;
5394 :
5395 439 : gfc_gobble_whitespace ();
5396 439 : c = gfc_next_ascii_char ();
5397 :
5398 439 : if ((c != ',') && (c != ')'))
5399 0 : goto bad;
5400 439 : if (c == ')')
5401 272 : inner = 0;
5402 :
5403 : break;
5404 :
5405 35 : default:
5406 35 : goto bad;
5407 : }
5408 :
5409 654 : if (c1 > c2)
5410 : {
5411 0 : gfc_error ("Letters must be in alphabetic order in "
5412 : "IMPLICIT statement at %C");
5413 0 : goto bad;
5414 : }
5415 :
5416 : /* See if we can add the newly matched range to the pending
5417 : implicits from this IMPLICIT statement. We do not check for
5418 : conflicts with whatever earlier IMPLICIT statements may have
5419 : set. This is done when we've successfully finished matching
5420 : the current one. */
5421 654 : if (!gfc_add_new_implicit_range (c1, c2))
5422 0 : goto bad;
5423 : }
5424 :
5425 : return MATCH_YES;
5426 :
5427 127 : bad:
5428 127 : gfc_syntax_error (ST_IMPLICIT);
5429 :
5430 127 : gfc_current_locus = cur_loc;
5431 127 : return MATCH_ERROR;
5432 : }
5433 :
5434 :
5435 : /* Match an IMPLICIT statement, storing the types for
5436 : gfc_set_implicit() if the statement is accepted by the parser.
5437 : There is a strange looking, but legal syntactic construction
5438 : possible. It looks like:
5439 :
5440 : IMPLICIT INTEGER (a-b) (c-d)
5441 :
5442 : This is legal if "a-b" is a constant expression that happens to
5443 : equal one of the legal kinds for integers. The real problem
5444 : happens with an implicit specification that looks like:
5445 :
5446 : IMPLICIT INTEGER (a-b)
5447 :
5448 : In this case, a typespec matcher that is "greedy" (as most of the
5449 : matchers are) gobbles the character range as a kindspec, leaving
5450 : nothing left. We therefore have to go a bit more slowly in the
5451 : matching process by inhibiting the kindspec checking during
5452 : typespec matching and checking for a kind later. */
5453 :
5454 : match
5455 24914 : gfc_match_implicit (void)
5456 : {
5457 24914 : gfc_typespec ts;
5458 24914 : locus cur_loc;
5459 24914 : char c;
5460 24914 : match m;
5461 :
5462 24914 : if (gfc_current_ns->seen_implicit_none)
5463 : {
5464 4 : gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) "
5465 : "statement");
5466 4 : return MATCH_ERROR;
5467 : }
5468 :
5469 24910 : gfc_clear_ts (&ts);
5470 :
5471 : /* We don't allow empty implicit statements. */
5472 24910 : if (gfc_match_eos () == MATCH_YES)
5473 : {
5474 0 : gfc_error ("Empty IMPLICIT statement at %C");
5475 0 : return MATCH_ERROR;
5476 : }
5477 :
5478 24939 : do
5479 : {
5480 : /* First cleanup. */
5481 24939 : gfc_clear_new_implicit ();
5482 :
5483 : /* A basic type is mandatory here. */
5484 24939 : m = gfc_match_decl_type_spec (&ts, 1);
5485 24939 : if (m == MATCH_ERROR)
5486 0 : goto error;
5487 24939 : if (m == MATCH_NO)
5488 24486 : goto syntax;
5489 :
5490 453 : cur_loc = gfc_current_locus;
5491 453 : m = match_implicit_range ();
5492 :
5493 453 : if (m == MATCH_YES)
5494 : {
5495 : /* We may have <TYPE> (<RANGE>). */
5496 326 : gfc_gobble_whitespace ();
5497 326 : c = gfc_peek_ascii_char ();
5498 326 : if (c == ',' || c == '\n' || c == ';' || c == '!')
5499 : {
5500 : /* Check for CHARACTER with no length parameter. */
5501 299 : if (ts.type == BT_CHARACTER && !ts.u.cl)
5502 : {
5503 32 : ts.kind = gfc_default_character_kind;
5504 32 : ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
5505 32 : ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind,
5506 : NULL, 1);
5507 : }
5508 :
5509 : /* Record the Successful match. */
5510 299 : if (!gfc_merge_new_implicit (&ts))
5511 : return MATCH_ERROR;
5512 297 : if (c == ',')
5513 28 : c = gfc_next_ascii_char ();
5514 269 : else if (gfc_match_eos () == MATCH_ERROR)
5515 0 : goto error;
5516 297 : continue;
5517 : }
5518 :
5519 27 : gfc_current_locus = cur_loc;
5520 : }
5521 :
5522 : /* Discard the (incorrectly) matched range. */
5523 154 : gfc_clear_new_implicit ();
5524 :
5525 : /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */
5526 154 : if (ts.type == BT_CHARACTER)
5527 74 : m = gfc_match_char_spec (&ts);
5528 80 : else if (gfc_numeric_ts(&ts) || ts.type == BT_LOGICAL)
5529 : {
5530 76 : m = gfc_match_kind_spec (&ts, false);
5531 76 : if (m == MATCH_NO)
5532 : {
5533 40 : m = gfc_match_old_kind_spec (&ts);
5534 40 : if (m == MATCH_ERROR)
5535 0 : goto error;
5536 40 : if (m == MATCH_NO)
5537 0 : goto syntax;
5538 : }
5539 : }
5540 154 : if (m == MATCH_ERROR)
5541 7 : goto error;
5542 :
5543 147 : m = match_implicit_range ();
5544 147 : if (m == MATCH_ERROR)
5545 0 : goto error;
5546 147 : if (m == MATCH_NO)
5547 : goto syntax;
5548 :
5549 147 : gfc_gobble_whitespace ();
5550 147 : c = gfc_next_ascii_char ();
5551 147 : if (c != ',' && gfc_match_eos () != MATCH_YES)
5552 0 : goto syntax;
5553 :
5554 147 : if (!gfc_merge_new_implicit (&ts))
5555 : return MATCH_ERROR;
5556 : }
5557 444 : while (c == ',');
5558 :
5559 : return MATCH_YES;
5560 :
5561 24486 : syntax:
5562 24486 : gfc_syntax_error (ST_IMPLICIT);
5563 :
5564 24914 : error:
5565 : return MATCH_ERROR;
5566 : }
5567 :
5568 :
5569 : /* Match the IMPORT statement. IMPORT was added to F2003 as
5570 :
5571 : R1209 import-stmt is IMPORT [[ :: ] import-name-list ]
5572 :
5573 : C1210 (R1209) The IMPORT statement is allowed only in an interface-body.
5574 :
5575 : C1211 (R1209) Each import-name shall be the name of an entity in the
5576 : host scoping unit.
5577 :
5578 : under the description of an interface block. Under F2008, IMPORT was
5579 : split out of the interface block description to 12.4.3.3 and C1210
5580 : became
5581 :
5582 : C1210 (R1209) The IMPORT statement is allowed only in an interface-body
5583 : that is not a module procedure interface body.
5584 :
5585 : Finally, F2018, section 8.8, has changed the IMPORT statement to
5586 :
5587 : R867 import-stmt is IMPORT [[ :: ] import-name-list ]
5588 : or IMPORT, ONLY : import-name-list
5589 : or IMPORT, NONE
5590 : or IMPORT, ALL
5591 :
5592 : C896 (R867) An IMPORT statement shall not appear in the scoping unit of
5593 : a main-program, external-subprogram, module, or block-data.
5594 :
5595 : C897 (R867) Each import-name shall be the name of an entity in the host
5596 : scoping unit.
5597 :
5598 : C898 If any IMPORT statement in a scoping unit has an ONLY specifier,
5599 : all IMPORT statements in that scoping unit shall have an ONLY
5600 : specifier.
5601 :
5602 : C899 IMPORT, NONE shall not appear in the scoping unit of a submodule.
5603 :
5604 : C8100 If an IMPORT, NONE or IMPORT, ALL statement appears in a scoping
5605 : unit, no other IMPORT statement shall appear in that scoping unit.
5606 :
5607 : C8101 Within an interface body, an entity that is accessed by host
5608 : association shall be accessible by host or use association within
5609 : the host scoping unit, or explicitly declared prior to the interface
5610 : body.
5611 :
5612 : C8102 An entity whose name appears as an import-name or which is made
5613 : accessible by an IMPORT, ALL statement shall not appear in any
5614 : context described in 19.5.1.4 that would cause the host entity
5615 : of that name to be inaccessible. */
5616 :
5617 : match
5618 4032 : gfc_match_import (void)
5619 : {
5620 4032 : char name[GFC_MAX_SYMBOL_LEN + 1];
5621 4032 : match m;
5622 4032 : gfc_symbol *sym;
5623 4032 : gfc_symtree *st;
5624 4032 : bool f2018_allowed = gfc_option.allow_std & ~GFC_STD_OPT_F08;;
5625 4032 : importstate current_import_state = gfc_current_ns->import_state;
5626 :
5627 4032 : if (!f2018_allowed
5628 13 : && (gfc_current_ns->proc_name == NULL
5629 12 : || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY))
5630 : {
5631 3 : gfc_error ("IMPORT statement at %C only permitted in "
5632 : "an INTERFACE body");
5633 3 : return MATCH_ERROR;
5634 : }
5635 : else if (f2018_allowed
5636 4019 : && (!gfc_current_ns->parent || gfc_current_ns->is_block_data))
5637 4 : goto C897;
5638 :
5639 4015 : if (f2018_allowed
5640 4015 : && (current_import_state == IMPORT_ALL
5641 4015 : || current_import_state == IMPORT_NONE))
5642 2 : goto C8100;
5643 :
5644 4023 : if (gfc_current_ns->proc_name
5645 4022 : && gfc_current_ns->proc_name->attr.module_procedure)
5646 : {
5647 1 : gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted "
5648 : "in a module procedure interface body");
5649 1 : return MATCH_ERROR;
5650 : }
5651 :
5652 4022 : if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C"))
5653 : return MATCH_ERROR;
5654 :
5655 4018 : gfc_current_ns->import_state = IMPORT_NOT_SET;
5656 4018 : if (f2018_allowed)
5657 : {
5658 4012 : if (gfc_match (" , none") == MATCH_YES)
5659 : {
5660 8 : if (current_import_state == IMPORT_ONLY)
5661 0 : goto C898;
5662 8 : if (gfc_current_state () == COMP_SUBMODULE)
5663 0 : goto C899;
5664 8 : gfc_current_ns->import_state = IMPORT_NONE;
5665 : }
5666 4004 : else if (gfc_match (" , only :") == MATCH_YES)
5667 : {
5668 19 : if (current_import_state != IMPORT_NOT_SET
5669 19 : && current_import_state != IMPORT_ONLY)
5670 0 : goto C898;
5671 19 : gfc_current_ns->import_state = IMPORT_ONLY;
5672 : }
5673 3985 : else if (gfc_match (" , all") == MATCH_YES)
5674 : {
5675 1 : if (current_import_state == IMPORT_ONLY)
5676 0 : goto C898;
5677 1 : gfc_current_ns->import_state = IMPORT_ALL;
5678 : }
5679 :
5680 4012 : if (current_import_state != IMPORT_NOT_SET
5681 6 : && (gfc_current_ns->import_state == IMPORT_NONE
5682 6 : || gfc_current_ns->import_state == IMPORT_ALL))
5683 0 : goto C8100;
5684 : }
5685 :
5686 : /* F2008 IMPORT<eos> is distinct from F2018 IMPORT, ALL. */
5687 4018 : if (gfc_match_eos () == MATCH_YES)
5688 : {
5689 : /* This is the F2008 variant. */
5690 340 : if (gfc_current_ns->import_state == IMPORT_NOT_SET)
5691 : {
5692 331 : if (current_import_state == IMPORT_ONLY)
5693 0 : goto C898;
5694 331 : gfc_current_ns->import_state = IMPORT_F2008;
5695 : }
5696 :
5697 : /* Host variables should be imported. */
5698 340 : if (gfc_current_ns->import_state != IMPORT_NONE)
5699 332 : gfc_current_ns->has_import_set = 1;
5700 : return MATCH_YES;
5701 : }
5702 :
5703 3678 : if (gfc_match (" ::") == MATCH_YES
5704 3678 : && gfc_current_ns->import_state != IMPORT_ONLY)
5705 : {
5706 1170 : if (gfc_match_eos () == MATCH_YES)
5707 1 : goto expecting_list;
5708 1169 : gfc_current_ns->import_state = IMPORT_F2008;
5709 : }
5710 2508 : else if (gfc_current_ns->import_state == IMPORT_ONLY)
5711 : {
5712 19 : if (gfc_match_eos () == MATCH_YES)
5713 0 : goto expecting_list;
5714 : }
5715 :
5716 4366 : for(;;)
5717 : {
5718 4366 : sym = NULL;
5719 4366 : m = gfc_match (" %n", name);
5720 4366 : switch (m)
5721 : {
5722 4366 : case MATCH_YES:
5723 : /* Before checking if the symbol is available from host
5724 : association into a SUBROUTINE or FUNCTION within an
5725 : INTERFACE, check if it is already in local scope. */
5726 4366 : gfc_find_symbol (name, gfc_current_ns, 1, &sym);
5727 4366 : if (sym
5728 25 : && gfc_state_stack->previous
5729 25 : && gfc_state_stack->previous->state == COMP_INTERFACE)
5730 : {
5731 2 : gfc_error ("import-name %qs at %C is in the "
5732 : "local scope", name);
5733 2 : return MATCH_ERROR;
5734 : }
5735 :
5736 4364 : if (gfc_current_ns->parent != NULL
5737 4364 : && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym))
5738 : {
5739 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5740 0 : return MATCH_ERROR;
5741 : }
5742 4364 : else if (!sym
5743 5 : && gfc_current_ns->proc_name
5744 4 : && gfc_current_ns->proc_name->ns->parent
5745 4365 : && gfc_find_symbol (name,
5746 : gfc_current_ns->proc_name->ns->parent,
5747 : 1, &sym))
5748 : {
5749 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5750 0 : return MATCH_ERROR;
5751 : }
5752 :
5753 4364 : if (sym == NULL)
5754 : {
5755 5 : if (gfc_current_ns->proc_name
5756 4 : && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY)
5757 : {
5758 1 : gfc_error ("Cannot IMPORT %qs from host scoping unit "
5759 : "at %C - does not exist.", name);
5760 1 : return MATCH_ERROR;
5761 : }
5762 : else
5763 : {
5764 : /* This might be a procedure that has not yet been parsed. If
5765 : so gfc_fixup_sibling_symbols will replace this symbol with
5766 : that of the procedure. */
5767 4 : gfc_get_sym_tree (name, gfc_current_ns, &st, false,
5768 : &gfc_current_locus);
5769 4 : st->n.sym->refs++;
5770 4 : st->n.sym->attr.imported = 1;
5771 4 : st->import_only = 1;
5772 4 : goto next_item;
5773 : }
5774 : }
5775 :
5776 4359 : st = gfc_find_symtree (gfc_current_ns->sym_root, name);
5777 4359 : if (st && st->n.sym && st->n.sym->attr.imported)
5778 : {
5779 0 : gfc_warning (0, "%qs is already IMPORTed from host scoping unit "
5780 : "at %C", name);
5781 0 : goto next_item;
5782 : }
5783 :
5784 4359 : st = gfc_new_symtree (&gfc_current_ns->sym_root, name);
5785 4359 : st->n.sym = sym;
5786 4359 : sym->refs++;
5787 4359 : sym->attr.imported = 1;
5788 4359 : st->import_only = 1;
5789 :
5790 4359 : if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym)))
5791 : {
5792 : /* The actual derived type is stored in a symtree with the first
5793 : letter of the name capitalized; the symtree with the all
5794 : lower-case name contains the associated generic function. */
5795 599 : st = gfc_new_symtree (&gfc_current_ns->sym_root,
5796 : gfc_dt_upper_string (name));
5797 599 : st->n.sym = sym;
5798 599 : sym->refs++;
5799 599 : sym->attr.imported = 1;
5800 599 : st->import_only = 1;
5801 : }
5802 :
5803 4359 : goto next_item;
5804 :
5805 : case MATCH_NO:
5806 : break;
5807 :
5808 : case MATCH_ERROR:
5809 : return MATCH_ERROR;
5810 : }
5811 :
5812 4363 : next_item:
5813 4363 : if (gfc_match_eos () == MATCH_YES)
5814 : break;
5815 689 : if (gfc_match_char (',') != MATCH_YES)
5816 0 : goto syntax;
5817 : }
5818 :
5819 : return MATCH_YES;
5820 :
5821 0 : syntax:
5822 0 : gfc_error ("Syntax error in IMPORT statement at %C");
5823 0 : return MATCH_ERROR;
5824 :
5825 4 : C897:
5826 4 : gfc_error ("F2018: C897 IMPORT statement at %C cannot appear in a main "
5827 : "program, an external subprogram, a module or block data");
5828 4 : return MATCH_ERROR;
5829 :
5830 0 : C898:
5831 0 : gfc_error ("F2018: C898 IMPORT statement at %C is not permitted because "
5832 : "a scoping unit has an ONLY specifier, can only have IMPORT "
5833 : "with an ONLY specifier");
5834 0 : return MATCH_ERROR;
5835 :
5836 0 : C899:
5837 0 : gfc_error ("F2018: C899 IMPORT, NONE shall not appear in the scoping unit"
5838 : " of a submodule as at %C");
5839 0 : return MATCH_ERROR;
5840 :
5841 2 : C8100:
5842 4 : gfc_error ("F2018: C8100 IMPORT statement at %C is not permitted because "
5843 : "%s has already been declared, which must be unique in the "
5844 : "scoping unit",
5845 2 : gfc_current_ns->import_state == IMPORT_ALL ? "IMPORT, ALL" :
5846 : "IMPORT, NONE");
5847 2 : return MATCH_ERROR;
5848 :
5849 1 : expecting_list:
5850 1 : gfc_error ("Expecting list of named entities at %C");
5851 1 : return MATCH_ERROR;
5852 : }
5853 :
5854 :
5855 : /* A minimal implementation of gfc_match without whitespace, escape
5856 : characters or variable arguments. Returns true if the next
5857 : characters match the TARGET template exactly. */
5858 :
5859 : static bool
5860 149308 : match_string_p (const char *target)
5861 : {
5862 149308 : const char *p;
5863 :
5864 936753 : for (p = target; *p; p++)
5865 787446 : if ((char) gfc_next_ascii_char () != *p)
5866 : return false;
5867 : return true;
5868 : }
5869 :
5870 : /* Matches an attribute specification including array specs. If
5871 : successful, leaves the variables current_attr and current_as
5872 : holding the specification. Also sets the colon_seen variable for
5873 : later use by matchers associated with initializations.
5874 :
5875 : This subroutine is a little tricky in the sense that we don't know
5876 : if we really have an attr-spec until we hit the double colon.
5877 : Until that time, we can only return MATCH_NO. This forces us to
5878 : check for duplicate specification at this level. */
5879 :
5880 : static match
5881 220610 : match_attr_spec (void)
5882 : {
5883 : /* Modifiers that can exist in a type statement. */
5884 220610 : enum
5885 : { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN,
5886 : DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT,
5887 : DECL_DIMENSION, DECL_EXTERNAL,
5888 : DECL_INTRINSIC, DECL_OPTIONAL,
5889 : DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE,
5890 : DECL_STATIC, DECL_AUTOMATIC,
5891 : DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE,
5892 : DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS,
5893 : DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */
5894 : };
5895 :
5896 : /* GFC_DECL_END is the sentinel, index starts at 0. */
5897 : #define NUM_DECL GFC_DECL_END
5898 :
5899 : /* Make sure that values from sym_intent are safe to be used here. */
5900 220610 : gcc_assert (INTENT_IN > 0);
5901 :
5902 220610 : locus start, seen_at[NUM_DECL];
5903 220610 : int seen[NUM_DECL];
5904 220610 : unsigned int d;
5905 220610 : const char *attr;
5906 220610 : match m;
5907 220610 : bool t;
5908 :
5909 220610 : gfc_clear_attr (¤t_attr);
5910 220610 : start = gfc_current_locus;
5911 :
5912 220610 : current_as = NULL;
5913 220610 : colon_seen = 0;
5914 220610 : attr_seen = 0;
5915 :
5916 : /* See if we get all of the keywords up to the final double colon. */
5917 5956470 : for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
5918 5735860 : seen[d] = 0;
5919 :
5920 341599 : for (;;)
5921 : {
5922 341599 : char ch;
5923 :
5924 341599 : d = DECL_NONE;
5925 341599 : gfc_gobble_whitespace ();
5926 :
5927 341599 : ch = gfc_next_ascii_char ();
5928 341599 : if (ch == ':')
5929 : {
5930 : /* This is the successful exit condition for the loop. */
5931 186755 : if (gfc_next_ascii_char () == ':')
5932 : break;
5933 : }
5934 154844 : else if (ch == ',')
5935 : {
5936 121001 : gfc_gobble_whitespace ();
5937 121001 : switch (gfc_peek_ascii_char ())
5938 : {
5939 18837 : case 'a':
5940 18837 : gfc_next_ascii_char ();
5941 18837 : switch (gfc_next_ascii_char ())
5942 : {
5943 18771 : case 'l':
5944 18771 : if (match_string_p ("locatable"))
5945 : {
5946 : /* Matched "allocatable". */
5947 : d = DECL_ALLOCATABLE;
5948 : }
5949 : break;
5950 :
5951 25 : case 's':
5952 25 : if (match_string_p ("ynchronous"))
5953 : {
5954 : /* Matched "asynchronous". */
5955 : d = DECL_ASYNCHRONOUS;
5956 : }
5957 : break;
5958 :
5959 41 : case 'u':
5960 41 : if (match_string_p ("tomatic"))
5961 : {
5962 : /* Matched "automatic". */
5963 : d = DECL_AUTOMATIC;
5964 : }
5965 : break;
5966 : }
5967 : break;
5968 :
5969 164 : case 'b':
5970 : /* Try and match the bind(c). */
5971 164 : m = gfc_match_bind_c (NULL, true);
5972 164 : if (m == MATCH_YES)
5973 : d = DECL_IS_BIND_C;
5974 0 : else if (m == MATCH_ERROR)
5975 0 : goto cleanup;
5976 : break;
5977 :
5978 2164 : case 'c':
5979 2164 : gfc_next_ascii_char ();
5980 2164 : if ('o' != gfc_next_ascii_char ())
5981 : break;
5982 2163 : switch (gfc_next_ascii_char ())
5983 : {
5984 68 : case 'd':
5985 68 : if (match_string_p ("imension"))
5986 : {
5987 : d = DECL_CODIMENSION;
5988 : break;
5989 : }
5990 : /* FALLTHRU */
5991 2095 : case 'n':
5992 2095 : if (match_string_p ("tiguous"))
5993 : {
5994 : d = DECL_CONTIGUOUS;
5995 : break;
5996 : }
5997 : }
5998 : break;
5999 :
6000 19760 : case 'd':
6001 19760 : if (match_string_p ("dimension"))
6002 : d = DECL_DIMENSION;
6003 : break;
6004 :
6005 177 : case 'e':
6006 177 : if (match_string_p ("external"))
6007 : d = DECL_EXTERNAL;
6008 : break;
6009 :
6010 28472 : case 'i':
6011 28472 : if (match_string_p ("int"))
6012 : {
6013 28472 : ch = gfc_next_ascii_char ();
6014 28472 : if (ch == 'e')
6015 : {
6016 28466 : if (match_string_p ("nt"))
6017 : {
6018 : /* Matched "intent". */
6019 28465 : d = match_intent_spec ();
6020 28465 : if (d == INTENT_UNKNOWN)
6021 : {
6022 2 : m = MATCH_ERROR;
6023 2 : goto cleanup;
6024 : }
6025 : }
6026 : }
6027 6 : else if (ch == 'r')
6028 : {
6029 6 : if (match_string_p ("insic"))
6030 : {
6031 : /* Matched "intrinsic". */
6032 : d = DECL_INTRINSIC;
6033 : }
6034 : }
6035 : }
6036 : break;
6037 :
6038 353 : case 'k':
6039 353 : if (match_string_p ("kind"))
6040 : d = DECL_KIND;
6041 : break;
6042 :
6043 331 : case 'l':
6044 331 : if (match_string_p ("len"))
6045 : d = DECL_LEN;
6046 : break;
6047 :
6048 5205 : case 'o':
6049 5205 : if (match_string_p ("optional"))
6050 : d = DECL_OPTIONAL;
6051 : break;
6052 :
6053 27374 : case 'p':
6054 27374 : gfc_next_ascii_char ();
6055 27374 : switch (gfc_next_ascii_char ())
6056 : {
6057 14440 : case 'a':
6058 14440 : if (match_string_p ("rameter"))
6059 : {
6060 : /* Matched "parameter". */
6061 : d = DECL_PARAMETER;
6062 : }
6063 : break;
6064 :
6065 12413 : case 'o':
6066 12413 : if (match_string_p ("inter"))
6067 : {
6068 : /* Matched "pointer". */
6069 : d = DECL_POINTER;
6070 : }
6071 : break;
6072 :
6073 268 : case 'r':
6074 268 : ch = gfc_next_ascii_char ();
6075 268 : if (ch == 'i')
6076 : {
6077 217 : if (match_string_p ("vate"))
6078 : {
6079 : /* Matched "private". */
6080 : d = DECL_PRIVATE;
6081 : }
6082 : }
6083 51 : else if (ch == 'o')
6084 : {
6085 51 : if (match_string_p ("tected"))
6086 : {
6087 : /* Matched "protected". */
6088 : d = DECL_PROTECTED;
6089 : }
6090 : }
6091 : break;
6092 :
6093 253 : case 'u':
6094 253 : if (match_string_p ("blic"))
6095 : {
6096 : /* Matched "public". */
6097 : d = DECL_PUBLIC;
6098 : }
6099 : break;
6100 : }
6101 : break;
6102 :
6103 1223 : case 's':
6104 1223 : gfc_next_ascii_char ();
6105 1223 : switch (gfc_next_ascii_char ())
6106 : {
6107 1210 : case 'a':
6108 1210 : if (match_string_p ("ve"))
6109 : {
6110 : /* Matched "save". */
6111 : d = DECL_SAVE;
6112 : }
6113 : break;
6114 :
6115 13 : case 't':
6116 13 : if (match_string_p ("atic"))
6117 : {
6118 : /* Matched "static". */
6119 : d = DECL_STATIC;
6120 : }
6121 : break;
6122 : }
6123 : break;
6124 :
6125 5636 : case 't':
6126 5636 : if (match_string_p ("target"))
6127 : d = DECL_TARGET;
6128 : break;
6129 :
6130 11305 : case 'v':
6131 11305 : gfc_next_ascii_char ();
6132 11305 : ch = gfc_next_ascii_char ();
6133 11305 : if (ch == 'a')
6134 : {
6135 10789 : if (match_string_p ("lue"))
6136 : {
6137 : /* Matched "value". */
6138 : d = DECL_VALUE;
6139 : }
6140 : }
6141 516 : else if (ch == 'o')
6142 : {
6143 516 : if (match_string_p ("latile"))
6144 : {
6145 : /* Matched "volatile". */
6146 : d = DECL_VOLATILE;
6147 : }
6148 : }
6149 : break;
6150 : }
6151 : }
6152 :
6153 : /* No double colon and no recognizable decl_type, so assume that
6154 : we've been looking at something else the whole time. */
6155 : if (d == DECL_NONE)
6156 : {
6157 33846 : m = MATCH_NO;
6158 33846 : goto cleanup;
6159 : }
6160 :
6161 : /* Check to make sure any parens are paired up correctly. */
6162 120997 : if (gfc_match_parens () == MATCH_ERROR)
6163 : {
6164 1 : m = MATCH_ERROR;
6165 1 : goto cleanup;
6166 : }
6167 :
6168 120996 : seen[d]++;
6169 120996 : seen_at[d] = gfc_current_locus;
6170 :
6171 120996 : if (d == DECL_DIMENSION || d == DECL_CODIMENSION)
6172 : {
6173 19827 : gfc_array_spec *as = NULL;
6174 :
6175 19827 : m = gfc_match_array_spec (&as, d == DECL_DIMENSION,
6176 : d == DECL_CODIMENSION);
6177 :
6178 19827 : if (current_as == NULL)
6179 19802 : current_as = as;
6180 25 : else if (m == MATCH_YES)
6181 : {
6182 25 : if (!merge_array_spec (as, current_as, false))
6183 2 : m = MATCH_ERROR;
6184 25 : free (as);
6185 : }
6186 :
6187 19827 : if (m == MATCH_NO)
6188 : {
6189 0 : if (d == DECL_CODIMENSION)
6190 0 : gfc_error ("Missing codimension specification at %C");
6191 : else
6192 0 : gfc_error ("Missing dimension specification at %C");
6193 : m = MATCH_ERROR;
6194 : }
6195 :
6196 19827 : if (m == MATCH_ERROR)
6197 7 : goto cleanup;
6198 : }
6199 : }
6200 :
6201 : /* Since we've seen a double colon, we have to be looking at an
6202 : attr-spec. This means that we can now issue errors. */
6203 5042337 : for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
6204 4855585 : if (seen[d] > 1)
6205 : {
6206 2 : switch (d)
6207 : {
6208 : case DECL_ALLOCATABLE:
6209 : attr = "ALLOCATABLE";
6210 : break;
6211 0 : case DECL_ASYNCHRONOUS:
6212 0 : attr = "ASYNCHRONOUS";
6213 0 : break;
6214 0 : case DECL_CODIMENSION:
6215 0 : attr = "CODIMENSION";
6216 0 : break;
6217 0 : case DECL_CONTIGUOUS:
6218 0 : attr = "CONTIGUOUS";
6219 0 : break;
6220 0 : case DECL_DIMENSION:
6221 0 : attr = "DIMENSION";
6222 0 : break;
6223 0 : case DECL_EXTERNAL:
6224 0 : attr = "EXTERNAL";
6225 0 : break;
6226 0 : case DECL_IN:
6227 0 : attr = "INTENT (IN)";
6228 0 : break;
6229 0 : case DECL_OUT:
6230 0 : attr = "INTENT (OUT)";
6231 0 : break;
6232 0 : case DECL_INOUT:
6233 0 : attr = "INTENT (IN OUT)";
6234 0 : break;
6235 0 : case DECL_INTRINSIC:
6236 0 : attr = "INTRINSIC";
6237 0 : break;
6238 0 : case DECL_OPTIONAL:
6239 0 : attr = "OPTIONAL";
6240 0 : break;
6241 0 : case DECL_KIND:
6242 0 : attr = "KIND";
6243 0 : break;
6244 0 : case DECL_LEN:
6245 0 : attr = "LEN";
6246 0 : break;
6247 0 : case DECL_PARAMETER:
6248 0 : attr = "PARAMETER";
6249 0 : break;
6250 0 : case DECL_POINTER:
6251 0 : attr = "POINTER";
6252 0 : break;
6253 0 : case DECL_PROTECTED:
6254 0 : attr = "PROTECTED";
6255 0 : break;
6256 0 : case DECL_PRIVATE:
6257 0 : attr = "PRIVATE";
6258 0 : break;
6259 0 : case DECL_PUBLIC:
6260 0 : attr = "PUBLIC";
6261 0 : break;
6262 0 : case DECL_SAVE:
6263 0 : attr = "SAVE";
6264 0 : break;
6265 0 : case DECL_STATIC:
6266 0 : attr = "STATIC";
6267 0 : break;
6268 1 : case DECL_AUTOMATIC:
6269 1 : attr = "AUTOMATIC";
6270 1 : break;
6271 0 : case DECL_TARGET:
6272 0 : attr = "TARGET";
6273 0 : break;
6274 0 : case DECL_IS_BIND_C:
6275 0 : attr = "IS_BIND_C";
6276 0 : break;
6277 0 : case DECL_VALUE:
6278 0 : attr = "VALUE";
6279 0 : break;
6280 1 : case DECL_VOLATILE:
6281 1 : attr = "VOLATILE";
6282 1 : break;
6283 0 : default:
6284 0 : attr = NULL; /* This shouldn't happen. */
6285 : }
6286 :
6287 2 : gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]);
6288 2 : m = MATCH_ERROR;
6289 2 : goto cleanup;
6290 : }
6291 :
6292 : /* Now that we've dealt with duplicate attributes, add the attributes
6293 : to the current attribute. */
6294 5041517 : for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
6295 : {
6296 4854838 : if (seen[d] == 0)
6297 4733858 : continue;
6298 : else
6299 120980 : attr_seen = 1;
6300 :
6301 120980 : if ((d == DECL_STATIC || d == DECL_AUTOMATIC)
6302 52 : && !flag_dec_static)
6303 : {
6304 3 : gfc_error ("%s at %L is a DEC extension, enable with "
6305 : "%<-fdec-static%>",
6306 : d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]);
6307 2 : m = MATCH_ERROR;
6308 2 : goto cleanup;
6309 : }
6310 : /* Allow SAVE with STATIC, but don't complain. */
6311 50 : if (d == DECL_STATIC && seen[DECL_SAVE])
6312 0 : continue;
6313 :
6314 120978 : if (gfc_comp_struct (gfc_current_state ())
6315 7085 : && d != DECL_DIMENSION && d != DECL_CODIMENSION
6316 6121 : && d != DECL_POINTER && d != DECL_PRIVATE
6317 4431 : && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE)
6318 : {
6319 4374 : bool is_derived = gfc_current_state () == COMP_DERIVED;
6320 4374 : if (d == DECL_ALLOCATABLE)
6321 : {
6322 3677 : if (!gfc_notify_std (GFC_STD_F2003, is_derived
6323 : ? G_("ALLOCATABLE attribute at %C in a "
6324 : "TYPE definition")
6325 : : G_("ALLOCATABLE attribute at %C in a "
6326 : "STRUCTURE definition")))
6327 : {
6328 2 : m = MATCH_ERROR;
6329 2 : goto cleanup;
6330 : }
6331 : }
6332 697 : else if (d == DECL_KIND)
6333 : {
6334 351 : if (!gfc_notify_std (GFC_STD_F2003, is_derived
6335 : ? G_("KIND attribute at %C in a "
6336 : "TYPE definition")
6337 : : G_("KIND attribute at %C in a "
6338 : "STRUCTURE definition")))
6339 : {
6340 1 : m = MATCH_ERROR;
6341 1 : goto cleanup;
6342 : }
6343 350 : if (current_ts.type != BT_INTEGER)
6344 : {
6345 2 : gfc_error ("Component with KIND attribute at %C must be "
6346 : "INTEGER");
6347 2 : m = MATCH_ERROR;
6348 2 : goto cleanup;
6349 : }
6350 : }
6351 346 : else if (d == DECL_LEN)
6352 : {
6353 330 : if (!gfc_notify_std (GFC_STD_F2003, is_derived
6354 : ? G_("LEN attribute at %C in a "
6355 : "TYPE definition")
6356 : : G_("LEN attribute at %C in a "
6357 : "STRUCTURE definition")))
6358 : {
6359 0 : m = MATCH_ERROR;
6360 0 : goto cleanup;
6361 : }
6362 330 : if (current_ts.type != BT_INTEGER)
6363 : {
6364 1 : gfc_error ("Component with LEN attribute at %C must be "
6365 : "INTEGER");
6366 1 : m = MATCH_ERROR;
6367 1 : goto cleanup;
6368 : }
6369 : }
6370 : else
6371 : {
6372 32 : gfc_error (is_derived ? G_("Attribute at %L is not allowed in a "
6373 : "TYPE definition")
6374 : : G_("Attribute at %L is not allowed in a "
6375 : "STRUCTURE definition"), &seen_at[d]);
6376 16 : m = MATCH_ERROR;
6377 16 : goto cleanup;
6378 : }
6379 : }
6380 :
6381 120956 : if ((d == DECL_PRIVATE || d == DECL_PUBLIC)
6382 470 : && gfc_current_state () != COMP_MODULE)
6383 : {
6384 147 : if (d == DECL_PRIVATE)
6385 : attr = "PRIVATE";
6386 : else
6387 43 : attr = "PUBLIC";
6388 147 : if (gfc_current_state () == COMP_DERIVED
6389 141 : && gfc_state_stack->previous
6390 141 : && gfc_state_stack->previous->state == COMP_MODULE)
6391 : {
6392 138 : if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s "
6393 : "at %L in a TYPE definition", attr,
6394 : &seen_at[d]))
6395 : {
6396 2 : m = MATCH_ERROR;
6397 2 : goto cleanup;
6398 : }
6399 : }
6400 : else
6401 : {
6402 9 : gfc_error ("%s attribute at %L is not allowed outside of the "
6403 : "specification part of a module", attr, &seen_at[d]);
6404 9 : m = MATCH_ERROR;
6405 9 : goto cleanup;
6406 : }
6407 : }
6408 :
6409 120945 : if (gfc_current_state () != COMP_DERIVED
6410 113891 : && (d == DECL_KIND || d == DECL_LEN))
6411 : {
6412 3 : gfc_error ("Attribute at %L is not allowed outside a TYPE "
6413 : "definition", &seen_at[d]);
6414 3 : m = MATCH_ERROR;
6415 3 : goto cleanup;
6416 : }
6417 :
6418 120942 : switch (d)
6419 : {
6420 18769 : case DECL_ALLOCATABLE:
6421 18769 : t = gfc_add_allocatable (¤t_attr, &seen_at[d]);
6422 18769 : break;
6423 :
6424 24 : case DECL_ASYNCHRONOUS:
6425 24 : if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C"))
6426 : t = false;
6427 : else
6428 24 : t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]);
6429 : break;
6430 :
6431 66 : case DECL_CODIMENSION:
6432 66 : t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]);
6433 66 : break;
6434 :
6435 2095 : case DECL_CONTIGUOUS:
6436 2095 : if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C"))
6437 : t = false;
6438 : else
6439 2094 : t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]);
6440 : break;
6441 :
6442 19752 : case DECL_DIMENSION:
6443 19752 : t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]);
6444 19752 : break;
6445 :
6446 176 : case DECL_EXTERNAL:
6447 176 : t = gfc_add_external (¤t_attr, &seen_at[d]);
6448 176 : break;
6449 :
6450 21534 : case DECL_IN:
6451 21534 : t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]);
6452 21534 : break;
6453 :
6454 3748 : case DECL_OUT:
6455 3748 : t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]);
6456 3748 : break;
6457 :
6458 3177 : case DECL_INOUT:
6459 3177 : t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]);
6460 3177 : break;
6461 :
6462 5 : case DECL_INTRINSIC:
6463 5 : t = gfc_add_intrinsic (¤t_attr, &seen_at[d]);
6464 5 : break;
6465 :
6466 5204 : case DECL_OPTIONAL:
6467 5204 : t = gfc_add_optional (¤t_attr, &seen_at[d]);
6468 5204 : break;
6469 :
6470 348 : case DECL_KIND:
6471 348 : t = gfc_add_kind (¤t_attr, &seen_at[d]);
6472 348 : break;
6473 :
6474 329 : case DECL_LEN:
6475 329 : t = gfc_add_len (¤t_attr, &seen_at[d]);
6476 329 : break;
6477 :
6478 14439 : case DECL_PARAMETER:
6479 14439 : t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]);
6480 14439 : break;
6481 :
6482 12412 : case DECL_POINTER:
6483 12412 : t = gfc_add_pointer (¤t_attr, &seen_at[d]);
6484 12412 : break;
6485 :
6486 50 : case DECL_PROTECTED:
6487 50 : if (gfc_current_state () != COMP_MODULE
6488 48 : || (gfc_current_ns->proc_name
6489 48 : && gfc_current_ns->proc_name->attr.flavor != FL_MODULE))
6490 : {
6491 2 : gfc_error ("PROTECTED at %C only allowed in specification "
6492 : "part of a module");
6493 2 : t = false;
6494 2 : break;
6495 : }
6496 :
6497 48 : if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C"))
6498 : t = false;
6499 : else
6500 44 : t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]);
6501 : break;
6502 :
6503 214 : case DECL_PRIVATE:
6504 214 : t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL,
6505 : &seen_at[d]);
6506 214 : break;
6507 :
6508 245 : case DECL_PUBLIC:
6509 245 : t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL,
6510 : &seen_at[d]);
6511 245 : break;
6512 :
6513 1220 : case DECL_STATIC:
6514 1220 : case DECL_SAVE:
6515 1220 : t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]);
6516 1220 : break;
6517 :
6518 37 : case DECL_AUTOMATIC:
6519 37 : t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]);
6520 37 : break;
6521 :
6522 5634 : case DECL_TARGET:
6523 5634 : t = gfc_add_target (¤t_attr, &seen_at[d]);
6524 5634 : break;
6525 :
6526 163 : case DECL_IS_BIND_C:
6527 163 : t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0);
6528 163 : break;
6529 :
6530 10788 : case DECL_VALUE:
6531 10788 : if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C"))
6532 : t = false;
6533 : else
6534 10788 : t = gfc_add_value (¤t_attr, NULL, &seen_at[d]);
6535 : break;
6536 :
6537 513 : case DECL_VOLATILE:
6538 513 : if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C"))
6539 : t = false;
6540 : else
6541 512 : t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]);
6542 : break;
6543 :
6544 0 : default:
6545 0 : gfc_internal_error ("match_attr_spec(): Bad attribute");
6546 : }
6547 :
6548 120936 : if (!t)
6549 : {
6550 35 : m = MATCH_ERROR;
6551 35 : goto cleanup;
6552 : }
6553 : }
6554 :
6555 : /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */
6556 186679 : if ((gfc_current_state () == COMP_MODULE
6557 186679 : || gfc_current_state () == COMP_SUBMODULE)
6558 5988 : && !current_attr.save
6559 5806 : && (gfc_option.allow_std & GFC_STD_F2008) != 0)
6560 5714 : current_attr.save = SAVE_IMPLICIT;
6561 :
6562 186679 : colon_seen = 1;
6563 186679 : return MATCH_YES;
6564 :
6565 33931 : cleanup:
6566 33931 : gfc_current_locus = start;
6567 33931 : gfc_free_array_spec (current_as);
6568 33931 : current_as = NULL;
6569 33931 : attr_seen = 0;
6570 33931 : return m;
6571 : }
6572 :
6573 :
6574 : /* Set the binding label, dest_label, either with the binding label
6575 : stored in the given gfc_typespec, ts, or if none was provided, it
6576 : will be the symbol name in all lower case, as required by the draft
6577 : (J3/04-007, section 15.4.1). If a binding label was given and
6578 : there is more than one argument (num_idents), it is an error. */
6579 :
6580 : static bool
6581 347 : set_binding_label (const char **dest_label, const char *sym_name,
6582 : int num_idents)
6583 : {
6584 347 : if (num_idents > 1 && has_name_equals)
6585 : {
6586 4 : gfc_error ("Multiple identifiers provided with "
6587 : "single NAME= specifier at %C");
6588 4 : return false;
6589 : }
6590 :
6591 343 : if (curr_binding_label)
6592 : /* Binding label given; store in temp holder till have sym. */
6593 108 : *dest_label = curr_binding_label;
6594 : else
6595 : {
6596 : /* No binding label given, and the NAME= specifier did not exist,
6597 : which means there was no NAME="". */
6598 235 : if (sym_name != NULL && has_name_equals == 0)
6599 205 : *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name));
6600 : }
6601 :
6602 : return true;
6603 : }
6604 :
6605 :
6606 : /* Set the status of the given common block as being BIND(C) or not,
6607 : depending on the given parameter, is_bind_c. */
6608 :
6609 : static void
6610 76 : set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c)
6611 : {
6612 76 : com_block->is_bind_c = is_bind_c;
6613 76 : return;
6614 : }
6615 :
6616 :
6617 : /* Verify that the given gfc_typespec is for a C interoperable type. */
6618 :
6619 : bool
6620 21421 : gfc_verify_c_interop (gfc_typespec *ts)
6621 : {
6622 21421 : if (ts->type == BT_DERIVED && ts->u.derived != NULL)
6623 4320 : return ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c;
6624 17101 : else if (ts->type == BT_CLASS)
6625 : return false;
6626 17093 : else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED)
6627 3983 : return false;
6628 :
6629 : return true;
6630 : }
6631 :
6632 :
6633 : /* Verify that the variables of a given common block, which has been
6634 : defined with the attribute specifier bind(c), to be of a C
6635 : interoperable type. Errors will be reported here, if
6636 : encountered. */
6637 :
6638 : bool
6639 1 : verify_com_block_vars_c_interop (gfc_common_head *com_block)
6640 : {
6641 1 : gfc_symbol *curr_sym = NULL;
6642 1 : bool retval = true;
6643 :
6644 1 : curr_sym = com_block->head;
6645 :
6646 : /* Make sure we have at least one symbol. */
6647 1 : if (curr_sym == NULL)
6648 : return retval;
6649 :
6650 : /* Here we know we have a symbol, so we'll execute this loop
6651 : at least once. */
6652 1 : do
6653 : {
6654 : /* The second to last param, 1, says this is in a common block. */
6655 1 : retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block);
6656 1 : curr_sym = curr_sym->common_next;
6657 1 : } while (curr_sym != NULL);
6658 :
6659 : return retval;
6660 : }
6661 :
6662 :
6663 : /* Verify that a given BIND(C) symbol is C interoperable. If it is not,
6664 : an appropriate error message is reported. */
6665 :
6666 : bool
6667 7401 : verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts,
6668 : int is_in_common, gfc_common_head *com_block)
6669 : {
6670 7401 : bool bind_c_function = false;
6671 7401 : bool retval = true;
6672 :
6673 7401 : if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c)
6674 7401 : bind_c_function = true;
6675 :
6676 7401 : if (tmp_sym->attr.function && tmp_sym->result != NULL)
6677 : {
6678 3150 : tmp_sym = tmp_sym->result;
6679 : /* Make sure it wasn't an implicitly typed result. */
6680 3150 : if (tmp_sym->attr.implicit_type && warn_c_binding_type)
6681 : {
6682 1 : gfc_warning (OPT_Wc_binding_type,
6683 : "Implicitly declared BIND(C) function %qs at "
6684 : "%L may not be C interoperable", tmp_sym->name,
6685 : &tmp_sym->declared_at);
6686 1 : tmp_sym->ts.f90_type = tmp_sym->ts.type;
6687 : /* Mark it as C interoperable to prevent duplicate warnings. */
6688 1 : tmp_sym->ts.is_c_interop = 1;
6689 1 : tmp_sym->attr.is_c_interop = 1;
6690 : }
6691 : }
6692 :
6693 : /* Here, we know we have the bind(c) attribute, so if we have
6694 : enough type info, then verify that it's a C interop kind.
6695 : The info could be in the symbol already, or possibly still in
6696 : the given ts (current_ts), so look in both. */
6697 7401 : if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN)
6698 : {
6699 3309 : if (!gfc_verify_c_interop (&(tmp_sym->ts)))
6700 : {
6701 : /* See if we're dealing with a sym in a common block or not. */
6702 237 : if (is_in_common == 1 && warn_c_binding_type)
6703 : {
6704 0 : gfc_warning (OPT_Wc_binding_type,
6705 : "Variable %qs in common block %qs at %L "
6706 : "may not be a C interoperable "
6707 : "kind though common block %qs is BIND(C)",
6708 : tmp_sym->name, com_block->name,
6709 0 : &(tmp_sym->declared_at), com_block->name);
6710 : }
6711 : else
6712 : {
6713 237 : if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED
6714 235 : || tmp_sym->ts.type == BT_CLASS || ts->type == BT_CLASS)
6715 : {
6716 3 : gfc_error ("Type declaration %qs at %L is not C "
6717 : "interoperable but it is BIND(C)",
6718 : tmp_sym->name, &(tmp_sym->declared_at));
6719 3 : retval = false;
6720 : }
6721 234 : else if (warn_c_binding_type)
6722 3 : gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L "
6723 : "may not be a C interoperable "
6724 : "kind but it is BIND(C)",
6725 : tmp_sym->name, &(tmp_sym->declared_at));
6726 : }
6727 : }
6728 :
6729 : /* Variables declared w/in a common block can't be bind(c)
6730 : since there's no way for C to see these variables, so there's
6731 : semantically no reason for the attribute. */
6732 3309 : if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1)
6733 : {
6734 1 : gfc_error ("Variable %qs in common block %qs at "
6735 : "%L cannot be declared with BIND(C) "
6736 : "since it is not a global",
6737 1 : tmp_sym->name, com_block->name,
6738 : &(tmp_sym->declared_at));
6739 1 : retval = false;
6740 : }
6741 :
6742 : /* Scalar variables that are bind(c) cannot have the pointer
6743 : or allocatable attributes. */
6744 3309 : if (tmp_sym->attr.is_bind_c == 1)
6745 : {
6746 2771 : if (tmp_sym->attr.pointer == 1)
6747 : {
6748 1 : gfc_error ("Variable %qs at %L cannot have both the "
6749 : "POINTER and BIND(C) attributes",
6750 : tmp_sym->name, &(tmp_sym->declared_at));
6751 1 : retval = false;
6752 : }
6753 :
6754 2771 : if (tmp_sym->attr.allocatable == 1)
6755 : {
6756 0 : gfc_error ("Variable %qs at %L cannot have both the "
6757 : "ALLOCATABLE and BIND(C) attributes",
6758 : tmp_sym->name, &(tmp_sym->declared_at));
6759 0 : retval = false;
6760 : }
6761 :
6762 : }
6763 :
6764 : /* If it is a BIND(C) function, make sure the return value is a
6765 : scalar value. The previous tests in this function made sure
6766 : the type is interoperable. */
6767 3309 : if (bind_c_function && tmp_sym->as != NULL)
6768 2 : gfc_error ("Return type of BIND(C) function %qs at %L cannot "
6769 : "be an array", tmp_sym->name, &(tmp_sym->declared_at));
6770 :
6771 : /* BIND(C) functions cannot return a character string. */
6772 3150 : if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER)
6773 116 : if (!gfc_length_one_character_type_p (&tmp_sym->ts))
6774 4 : gfc_error ("Return type of BIND(C) function %qs of character "
6775 : "type at %L must have length 1", tmp_sym->name,
6776 : &(tmp_sym->declared_at));
6777 : }
6778 :
6779 : /* See if the symbol has been marked as private. If it has, warn if
6780 : there is a binding label with default binding name. */
6781 7401 : if (tmp_sym->attr.access == ACCESS_PRIVATE
6782 11 : && tmp_sym->binding_label
6783 8 : && strcmp (tmp_sym->name, tmp_sym->binding_label) == 0
6784 5 : && (tmp_sym->attr.flavor == FL_VARIABLE
6785 4 : || tmp_sym->attr.if_source == IFSRC_DECL))
6786 4 : gfc_warning (OPT_Wsurprising,
6787 : "Symbol %qs at %L is marked PRIVATE but is accessible "
6788 : "via its default binding name %qs", tmp_sym->name,
6789 : &(tmp_sym->declared_at), tmp_sym->binding_label);
6790 :
6791 7401 : return retval;
6792 : }
6793 :
6794 :
6795 : /* Set the appropriate fields for a symbol that's been declared as
6796 : BIND(C) (the is_bind_c flag and the binding label), and verify that
6797 : the type is C interoperable. Errors are reported by the functions
6798 : used to set/test these fields. */
6799 :
6800 : static bool
6801 47 : set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents)
6802 : {
6803 47 : bool retval = true;
6804 :
6805 : /* TODO: Do we need to make sure the vars aren't marked private? */
6806 :
6807 : /* Set the is_bind_c bit in symbol_attribute. */
6808 47 : gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0);
6809 :
6810 47 : if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents))
6811 : return false;
6812 :
6813 : return retval;
6814 : }
6815 :
6816 :
6817 : /* Set the fields marking the given common block as BIND(C), including
6818 : a binding label, and report any errors encountered. */
6819 :
6820 : static bool
6821 76 : set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents)
6822 : {
6823 76 : bool retval = true;
6824 :
6825 : /* destLabel, common name, typespec (which may have binding label). */
6826 76 : if (!set_binding_label (&com_block->binding_label, com_block->name,
6827 : num_idents))
6828 : return false;
6829 :
6830 : /* Set the given common block (com_block) to being bind(c) (1). */
6831 76 : set_com_block_bind_c (com_block, 1);
6832 :
6833 76 : return retval;
6834 : }
6835 :
6836 :
6837 : /* Retrieve the list of one or more identifiers that the given bind(c)
6838 : attribute applies to. */
6839 :
6840 : static bool
6841 102 : get_bind_c_idents (void)
6842 : {
6843 102 : char name[GFC_MAX_SYMBOL_LEN + 1];
6844 102 : int num_idents = 0;
6845 102 : gfc_symbol *tmp_sym = NULL;
6846 102 : match found_id;
6847 102 : gfc_common_head *com_block = NULL;
6848 :
6849 102 : if (gfc_match_name (name) == MATCH_YES)
6850 : {
6851 38 : found_id = MATCH_YES;
6852 38 : gfc_get_ha_symbol (name, &tmp_sym);
6853 : }
6854 64 : else if (gfc_match_common_name (name) == MATCH_YES)
6855 : {
6856 64 : found_id = MATCH_YES;
6857 64 : com_block = gfc_get_common (name, 0);
6858 : }
6859 : else
6860 : {
6861 0 : gfc_error ("Need either entity or common block name for "
6862 : "attribute specification statement at %C");
6863 0 : return false;
6864 : }
6865 :
6866 : /* Save the current identifier and look for more. */
6867 123 : do
6868 : {
6869 : /* Increment the number of identifiers found for this spec stmt. */
6870 123 : num_idents++;
6871 :
6872 : /* Make sure we have a sym or com block, and verify that it can
6873 : be bind(c). Set the appropriate field(s) and look for more
6874 : identifiers. */
6875 123 : if (tmp_sym != NULL || com_block != NULL)
6876 : {
6877 123 : if (tmp_sym != NULL)
6878 : {
6879 47 : if (!set_verify_bind_c_sym (tmp_sym, num_idents))
6880 : return false;
6881 : }
6882 : else
6883 : {
6884 76 : if (!set_verify_bind_c_com_block (com_block, num_idents))
6885 : return false;
6886 : }
6887 :
6888 : /* Look to see if we have another identifier. */
6889 122 : tmp_sym = NULL;
6890 122 : if (gfc_match_eos () == MATCH_YES)
6891 : found_id = MATCH_NO;
6892 21 : else if (gfc_match_char (',') != MATCH_YES)
6893 : found_id = MATCH_NO;
6894 21 : else if (gfc_match_name (name) == MATCH_YES)
6895 : {
6896 9 : found_id = MATCH_YES;
6897 9 : gfc_get_ha_symbol (name, &tmp_sym);
6898 : }
6899 12 : else if (gfc_match_common_name (name) == MATCH_YES)
6900 : {
6901 12 : found_id = MATCH_YES;
6902 12 : com_block = gfc_get_common (name, 0);
6903 : }
6904 : else
6905 : {
6906 0 : gfc_error ("Missing entity or common block name for "
6907 : "attribute specification statement at %C");
6908 0 : return false;
6909 : }
6910 : }
6911 : else
6912 : {
6913 0 : gfc_internal_error ("Missing symbol");
6914 : }
6915 122 : } while (found_id == MATCH_YES);
6916 :
6917 : /* if we get here we were successful */
6918 : return true;
6919 : }
6920 :
6921 :
6922 : /* Try and match a BIND(C) attribute specification statement. */
6923 :
6924 : match
6925 140 : gfc_match_bind_c_stmt (void)
6926 : {
6927 140 : match found_match = MATCH_NO;
6928 140 : gfc_typespec *ts;
6929 :
6930 140 : ts = ¤t_ts;
6931 :
6932 : /* This may not be necessary. */
6933 140 : gfc_clear_ts (ts);
6934 : /* Clear the temporary binding label holder. */
6935 140 : curr_binding_label = NULL;
6936 :
6937 : /* Look for the bind(c). */
6938 140 : found_match = gfc_match_bind_c (NULL, true);
6939 :
6940 140 : if (found_match == MATCH_YES)
6941 : {
6942 103 : if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C"))
6943 : return MATCH_ERROR;
6944 :
6945 : /* Look for the :: now, but it is not required. */
6946 102 : gfc_match (" :: ");
6947 :
6948 : /* Get the identifier(s) that needs to be updated. This may need to
6949 : change to hand the flag(s) for the attr specified so all identifiers
6950 : found can have all appropriate parts updated (assuming that the same
6951 : spec stmt can have multiple attrs, such as both bind(c) and
6952 : allocatable...). */
6953 102 : if (!get_bind_c_idents ())
6954 : /* Error message should have printed already. */
6955 1 : return MATCH_ERROR;
6956 : }
6957 :
6958 : return found_match;
6959 : }
6960 :
6961 :
6962 : /* Match a data declaration statement. */
6963 :
6964 : match
6965 1040301 : gfc_match_data_decl (void)
6966 : {
6967 1040301 : gfc_symbol *sym;
6968 1040301 : match m;
6969 1040301 : int elem;
6970 1040301 : gfc_component *comp_tail = NULL;
6971 :
6972 1040301 : type_param_spec_list = NULL;
6973 1040301 : decl_type_param_list = NULL;
6974 :
6975 1040301 : num_idents_on_line = 0;
6976 :
6977 : /* Record the last component before we start, so that we can roll back
6978 : any components added during this statement on error. PR106946.
6979 : Must be set before any 'goto cleanup' with m == MATCH_ERROR. */
6980 1040301 : if (gfc_comp_struct (gfc_current_state ()))
6981 : {
6982 32847 : gfc_symbol *block = gfc_current_block ();
6983 32847 : if (block)
6984 : {
6985 32847 : comp_tail = block->components;
6986 32847 : if (comp_tail)
6987 34739 : while (comp_tail->next)
6988 : comp_tail = comp_tail->next;
6989 : }
6990 : }
6991 :
6992 1040301 : m = gfc_match_decl_type_spec (¤t_ts, 0);
6993 1040301 : if (m != MATCH_YES)
6994 : return m;
6995 :
6996 219435 : if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
6997 35886 : && !gfc_comp_struct (gfc_current_state ()))
6998 : {
6999 32410 : sym = gfc_use_derived (current_ts.u.derived);
7000 :
7001 32410 : if (sym == NULL)
7002 : {
7003 22 : m = MATCH_ERROR;
7004 22 : goto cleanup;
7005 : }
7006 :
7007 32388 : current_ts.u.derived = sym;
7008 : }
7009 :
7010 219413 : m = match_attr_spec ();
7011 219413 : if (m == MATCH_ERROR)
7012 : {
7013 84 : m = MATCH_NO;
7014 84 : goto cleanup;
7015 : }
7016 :
7017 : /* F2018:C708. */
7018 219329 : if (current_ts.type == BT_CLASS && current_attr.flavor == FL_PARAMETER)
7019 : {
7020 6 : gfc_error ("CLASS entity at %C cannot have the PARAMETER attribute");
7021 6 : m = MATCH_ERROR;
7022 6 : goto cleanup;
7023 : }
7024 :
7025 219323 : if (current_ts.type == BT_CLASS
7026 11194 : && current_ts.u.derived->attr.unlimited_polymorphic)
7027 1993 : goto ok;
7028 :
7029 217330 : if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
7030 33864 : && current_ts.u.derived->components == NULL
7031 2873 : && !current_ts.u.derived->attr.zero_comp)
7032 : {
7033 :
7034 210 : if (current_attr.pointer && gfc_comp_struct (gfc_current_state ()))
7035 136 : goto ok;
7036 :
7037 74 : if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED)
7038 47 : goto ok;
7039 :
7040 27 : gfc_find_symbol (current_ts.u.derived->name,
7041 27 : current_ts.u.derived->ns, 1, &sym);
7042 :
7043 : /* Any symbol that we find had better be a type definition
7044 : which has its components defined, or be a structure definition
7045 : actively being parsed. */
7046 27 : if (sym != NULL && gfc_fl_struct (sym->attr.flavor)
7047 26 : && (current_ts.u.derived->components != NULL
7048 26 : || current_ts.u.derived->attr.zero_comp
7049 26 : || current_ts.u.derived == gfc_new_block))
7050 26 : goto ok;
7051 :
7052 1 : gfc_error ("Derived type at %C has not been previously defined "
7053 : "and so cannot appear in a derived type definition");
7054 1 : m = MATCH_ERROR;
7055 1 : goto cleanup;
7056 : }
7057 :
7058 217120 : ok:
7059 : /* If we have an old-style character declaration, and no new-style
7060 : attribute specifications, then there a comma is optional between
7061 : the type specification and the variable list. */
7062 219322 : if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector)
7063 1407 : gfc_match_char (',');
7064 :
7065 : /* Give the types/attributes to symbols that follow. Give the element
7066 : a number so that repeat character length expressions can be copied. */
7067 219322 : elem = 1;
7068 284942 : for (;;)
7069 : {
7070 284942 : num_idents_on_line++;
7071 284942 : m = variable_decl (elem++);
7072 284940 : if (m == MATCH_ERROR)
7073 413 : goto cleanup;
7074 284527 : if (m == MATCH_NO)
7075 : break;
7076 :
7077 284516 : if (gfc_match_eos () == MATCH_YES)
7078 218872 : goto cleanup;
7079 65644 : if (gfc_match_char (',') != MATCH_YES)
7080 : break;
7081 : }
7082 :
7083 35 : if (!gfc_error_flag_test ())
7084 : {
7085 : /* An anonymous structure declaration is unambiguous; if we matched one
7086 : according to gfc_match_structure_decl, we need to return MATCH_YES
7087 : here to avoid confusing the remaining matchers, even if there was an
7088 : error during variable_decl. We must flush any such errors. Note this
7089 : causes the parser to gracefully continue parsing the remaining input
7090 : as a structure body, which likely follows. */
7091 11 : if (current_ts.type == BT_DERIVED && current_ts.u.derived
7092 1 : && gfc_fl_struct (current_ts.u.derived->attr.flavor))
7093 : {
7094 1 : gfc_error_now ("Syntax error in anonymous structure declaration"
7095 : " at %C");
7096 : /* Skip the bad variable_decl and line up for the start of the
7097 : structure body. */
7098 1 : gfc_error_recovery ();
7099 1 : m = MATCH_YES;
7100 1 : goto cleanup;
7101 : }
7102 :
7103 10 : gfc_error ("Syntax error in data declaration at %C");
7104 : }
7105 :
7106 34 : m = MATCH_ERROR;
7107 :
7108 34 : gfc_free_data_all (gfc_current_ns);
7109 :
7110 219433 : cleanup:
7111 : /* If we failed inside a derived type definition, remove any CLASS
7112 : components that were added during this failed statement. For CLASS
7113 : components, gfc_build_class_symbol creates an extra container symbol in
7114 : the namespace outside the normal undo machinery. When reject_statement
7115 : later calls gfc_undo_symbols, the declaration state is rolled back but
7116 : that helper symbol survives and leaves the component dangling. Ordinary
7117 : components do not create that extra helper symbol, so leave them in
7118 : place for the usual follow-up diagnostics. PR106946.
7119 :
7120 : CLASS containers are shared between components of the same class type
7121 : and attributes (gfc_build_class_symbol reuses existing containers).
7122 : We must not free a container that is still referenced by a previously
7123 : committed component. Unlink and free the components first, then clean
7124 : up only orphaned containers. PR124482. */
7125 219433 : if (m == MATCH_ERROR && gfc_comp_struct (gfc_current_state ()))
7126 : {
7127 86 : gfc_symbol *block = gfc_current_block ();
7128 86 : if (block)
7129 : {
7130 86 : gfc_component **prev;
7131 86 : if (comp_tail)
7132 43 : prev = &comp_tail->next;
7133 : else
7134 43 : prev = &block->components;
7135 :
7136 : /* Record the CLASS container from the removed components.
7137 : Normally all components in one declaration share a single
7138 : container, but per-variable array specs can produce
7139 : additional ones; any beyond the first are harmlessly
7140 : leaked until namespace destruction. */
7141 86 : gfc_symbol *fclass_container = NULL;
7142 :
7143 120 : while (*prev)
7144 : {
7145 34 : gfc_component *c = *prev;
7146 34 : if (c->ts.type == BT_CLASS && c->ts.u.derived
7147 6 : && c->ts.u.derived->attr.is_class)
7148 : {
7149 3 : *prev = c->next;
7150 3 : if (!fclass_container)
7151 3 : fclass_container = c->ts.u.derived;
7152 3 : c->ts.u.derived = NULL;
7153 3 : gfc_free_component (c);
7154 : }
7155 : else
7156 31 : prev = &c->next;
7157 : }
7158 :
7159 : /* Free the container only if no remaining component still
7160 : references it. CLASS containers are shared between
7161 : components of the same class type and attributes
7162 : (gfc_build_class_symbol reuses existing ones). */
7163 86 : if (fclass_container)
7164 : {
7165 3 : bool shared = false;
7166 3 : for (gfc_component *q = block->components; q; q = q->next)
7167 1 : if (q->ts.type == BT_CLASS
7168 1 : && q->ts.u.derived == fclass_container)
7169 : {
7170 : shared = true;
7171 : break;
7172 : }
7173 3 : if (!shared)
7174 : {
7175 2 : if (gfc_find_symtree (fclass_container->ns->sym_root,
7176 : fclass_container->name))
7177 2 : gfc_delete_symtree (&fclass_container->ns->sym_root,
7178 : fclass_container->name);
7179 2 : gfc_release_symbol (fclass_container);
7180 : }
7181 : }
7182 : }
7183 : }
7184 :
7185 219433 : if (saved_kind_expr)
7186 336 : gfc_free_expr (saved_kind_expr);
7187 219433 : if (type_param_spec_list)
7188 1069 : gfc_free_actual_arglist (type_param_spec_list);
7189 219433 : if (decl_type_param_list)
7190 1014 : gfc_free_actual_arglist (decl_type_param_list);
7191 219433 : saved_kind_expr = NULL;
7192 219433 : gfc_free_array_spec (current_as);
7193 219433 : current_as = NULL;
7194 219433 : return m;
7195 : }
7196 :
7197 : static bool
7198 24967 : in_module_or_interface(void)
7199 : {
7200 24967 : if (gfc_current_state () == COMP_MODULE
7201 24967 : || gfc_current_state () == COMP_SUBMODULE
7202 24967 : || gfc_current_state () == COMP_INTERFACE)
7203 : return true;
7204 :
7205 20948 : if (gfc_state_stack->state == COMP_CONTAINS
7206 20066 : || gfc_state_stack->state == COMP_FUNCTION
7207 19960 : || gfc_state_stack->state == COMP_SUBROUTINE)
7208 : {
7209 988 : gfc_state_data *p;
7210 1032 : for (p = gfc_state_stack->previous; p ; p = p->previous)
7211 : {
7212 1028 : if (p->state == COMP_MODULE || p->state == COMP_SUBMODULE
7213 118 : || p->state == COMP_INTERFACE)
7214 : return true;
7215 : }
7216 : }
7217 : return false;
7218 : }
7219 :
7220 : /* Match a prefix associated with a function or subroutine
7221 : declaration. If the typespec pointer is nonnull, then a typespec
7222 : can be matched. Note that if nothing matches, MATCH_YES is
7223 : returned (the null string was matched). */
7224 :
7225 : match
7226 246595 : gfc_match_prefix (gfc_typespec *ts)
7227 : {
7228 246595 : bool seen_type;
7229 246595 : bool seen_impure;
7230 246595 : bool found_prefix;
7231 :
7232 246595 : gfc_clear_attr (¤t_attr);
7233 246595 : seen_type = false;
7234 246595 : seen_impure = false;
7235 :
7236 246595 : gcc_assert (!gfc_matching_prefix);
7237 246595 : gfc_matching_prefix = true;
7238 :
7239 256278 : do
7240 : {
7241 276542 : found_prefix = false;
7242 :
7243 : /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a
7244 : corresponding attribute seems natural and distinguishes these
7245 : procedures from procedure types of PROC_MODULE, which these are
7246 : as well. */
7247 276542 : if (gfc_match ("module% ") == MATCH_YES)
7248 : {
7249 25242 : if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C"))
7250 275 : goto error;
7251 :
7252 24967 : if (!in_module_or_interface ())
7253 : {
7254 19964 : gfc_error ("MODULE prefix at %C found outside of a module, "
7255 : "submodule, or interface");
7256 19964 : goto error;
7257 : }
7258 :
7259 5003 : current_attr.module_procedure = 1;
7260 5003 : found_prefix = true;
7261 : }
7262 :
7263 256303 : if (!seen_type && ts != NULL)
7264 : {
7265 138038 : match m;
7266 138038 : m = gfc_match_decl_type_spec (ts, 0);
7267 138038 : if (m == MATCH_ERROR)
7268 15 : goto error;
7269 138023 : if (m == MATCH_YES && gfc_match_space () == MATCH_YES)
7270 : {
7271 : seen_type = true;
7272 : found_prefix = true;
7273 : }
7274 : }
7275 :
7276 256288 : if (gfc_match ("elemental% ") == MATCH_YES)
7277 : {
7278 5383 : if (!gfc_add_elemental (¤t_attr, NULL))
7279 2 : goto error;
7280 :
7281 : found_prefix = true;
7282 : }
7283 :
7284 256286 : if (gfc_match ("pure% ") == MATCH_YES)
7285 : {
7286 2490 : if (!gfc_add_pure (¤t_attr, NULL))
7287 2 : goto error;
7288 :
7289 : found_prefix = true;
7290 : }
7291 :
7292 256284 : if (gfc_match ("recursive% ") == MATCH_YES)
7293 : {
7294 469 : if (!gfc_add_recursive (¤t_attr, NULL))
7295 2 : goto error;
7296 :
7297 : found_prefix = true;
7298 : }
7299 :
7300 : /* IMPURE is a somewhat special case, as it needs not set an actual
7301 : attribute but rather only prevents ELEMENTAL routines from being
7302 : automatically PURE. */
7303 256282 : if (gfc_match ("impure% ") == MATCH_YES)
7304 : {
7305 729 : if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C"))
7306 4 : goto error;
7307 :
7308 : seen_impure = true;
7309 : found_prefix = true;
7310 : }
7311 : }
7312 : while (found_prefix);
7313 :
7314 : /* IMPURE and PURE must not both appear, of course. */
7315 226331 : if (seen_impure && current_attr.pure)
7316 : {
7317 4 : gfc_error ("PURE and IMPURE must not appear both at %C");
7318 4 : goto error;
7319 : }
7320 :
7321 : /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */
7322 225606 : if (!seen_impure && current_attr.elemental && !current_attr.pure)
7323 : {
7324 4688 : if (!gfc_add_pure (¤t_attr, NULL))
7325 0 : goto error;
7326 : }
7327 :
7328 : /* At this point, the next item is not a prefix. */
7329 226327 : gcc_assert (gfc_matching_prefix);
7330 :
7331 226327 : gfc_matching_prefix = false;
7332 226327 : return MATCH_YES;
7333 :
7334 20268 : error:
7335 20268 : gcc_assert (gfc_matching_prefix);
7336 20268 : gfc_matching_prefix = false;
7337 20268 : return MATCH_ERROR;
7338 : }
7339 :
7340 :
7341 : /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */
7342 :
7343 : static bool
7344 64205 : copy_prefix (symbol_attribute *dest, locus *where)
7345 : {
7346 64205 : if (dest->module_procedure)
7347 : {
7348 732 : if (current_attr.elemental)
7349 13 : dest->elemental = 1;
7350 :
7351 732 : if (current_attr.pure)
7352 61 : dest->pure = 1;
7353 :
7354 732 : if (current_attr.recursive)
7355 8 : dest->recursive = 1;
7356 :
7357 : /* Module procedures are unusual in that the 'dest' is copied from
7358 : the interface declaration. However, this is an opportunity to
7359 : check that the submodule declaration is compliant with the
7360 : interface. */
7361 732 : if (dest->elemental && !current_attr.elemental)
7362 : {
7363 1 : gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is "
7364 : "missing at %L", where);
7365 1 : return false;
7366 : }
7367 :
7368 731 : if (dest->pure && !current_attr.pure)
7369 : {
7370 1 : gfc_error ("PURE prefix in MODULE PROCEDURE interface is "
7371 : "missing at %L", where);
7372 1 : return false;
7373 : }
7374 :
7375 730 : if (dest->recursive && !current_attr.recursive)
7376 : {
7377 1 : gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is "
7378 : "missing at %L", where);
7379 1 : return false;
7380 : }
7381 :
7382 : return true;
7383 : }
7384 :
7385 63473 : if (current_attr.elemental && !gfc_add_elemental (dest, where))
7386 : return false;
7387 :
7388 63471 : if (current_attr.pure && !gfc_add_pure (dest, where))
7389 : return false;
7390 :
7391 63471 : if (current_attr.recursive && !gfc_add_recursive (dest, where))
7392 : return false;
7393 :
7394 : return true;
7395 : }
7396 :
7397 :
7398 : /* Match a formal argument list or, if typeparam is true, a
7399 : type_param_name_list. */
7400 :
7401 : match
7402 495389 : gfc_match_formal_arglist (gfc_symbol *progname, int st_flag,
7403 : int null_flag, bool typeparam)
7404 : {
7405 495389 : gfc_formal_arglist *head, *tail, *p, *q;
7406 495389 : char name[GFC_MAX_SYMBOL_LEN + 1];
7407 495389 : gfc_symbol *sym;
7408 495389 : match m;
7409 495389 : gfc_formal_arglist *formal = NULL;
7410 :
7411 495389 : head = tail = NULL;
7412 :
7413 : /* Keep the interface formal argument list and null it so that the
7414 : matching for the new declaration can be done. The numbers and
7415 : names of the arguments are checked here. The interface formal
7416 : arguments are retained in formal_arglist and the characteristics
7417 : are compared in resolve.cc(resolve_fl_procedure). See the remark
7418 : in get_proc_name about the eventual need to copy the formal_arglist
7419 : and populate the formal namespace of the interface symbol. */
7420 495389 : if (progname->attr.module_procedure
7421 736 : && progname->attr.host_assoc)
7422 : {
7423 196 : formal = progname->formal;
7424 196 : progname->formal = NULL;
7425 : }
7426 :
7427 495389 : if (gfc_match_char ('(') != MATCH_YES)
7428 : {
7429 292817 : if (null_flag)
7430 6799 : goto ok;
7431 : return MATCH_NO;
7432 : }
7433 :
7434 202572 : if (gfc_match_char (')') == MATCH_YES)
7435 : {
7436 10560 : if (typeparam)
7437 : {
7438 1 : gfc_error_now ("A type parameter list is required at %C");
7439 1 : m = MATCH_ERROR;
7440 1 : goto cleanup;
7441 : }
7442 : else
7443 10559 : goto ok;
7444 : }
7445 :
7446 254766 : for (;;)
7447 : {
7448 254766 : gfc_gobble_whitespace ();
7449 254766 : if (gfc_match_char ('*') == MATCH_YES)
7450 : {
7451 10437 : sym = NULL;
7452 10437 : if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS,
7453 : "Alternate-return argument at %C"))
7454 : {
7455 1 : m = MATCH_ERROR;
7456 1 : goto cleanup;
7457 : }
7458 10436 : else if (typeparam)
7459 2 : gfc_error_now ("A parameter name is required at %C");
7460 : }
7461 : else
7462 : {
7463 244329 : locus loc = gfc_current_locus;
7464 244329 : m = gfc_match_name (name);
7465 244329 : if (m != MATCH_YES)
7466 : {
7467 16796 : if(typeparam)
7468 1 : gfc_error_now ("A parameter name is required at %C");
7469 16812 : goto cleanup;
7470 : }
7471 227533 : loc = gfc_get_location_range (NULL, 0, &loc, 1, &gfc_current_locus);
7472 :
7473 227533 : if (!typeparam && gfc_get_symbol (name, NULL, &sym, &loc))
7474 16 : goto cleanup;
7475 227517 : else if (typeparam
7476 227517 : && gfc_get_symbol (name, progname->f2k_derived, &sym, &loc))
7477 0 : goto cleanup;
7478 : }
7479 :
7480 237953 : p = gfc_get_formal_arglist ();
7481 :
7482 237953 : if (head == NULL)
7483 : head = tail = p;
7484 : else
7485 : {
7486 62051 : tail->next = p;
7487 62051 : tail = p;
7488 : }
7489 :
7490 237953 : tail->sym = sym;
7491 :
7492 : /* We don't add the VARIABLE flavor because the name could be a
7493 : dummy procedure. We don't apply these attributes to formal
7494 : arguments of statement functions. */
7495 227517 : if (sym != NULL && !st_flag
7496 340213 : && (!gfc_add_dummy(&sym->attr, sym->name, NULL)
7497 102260 : || !gfc_missing_attr (&sym->attr, NULL)))
7498 : {
7499 0 : m = MATCH_ERROR;
7500 0 : goto cleanup;
7501 : }
7502 :
7503 : /* The name of a program unit can be in a different namespace,
7504 : so check for it explicitly. After the statement is accepted,
7505 : the name is checked for especially in gfc_get_symbol(). */
7506 237953 : if (gfc_new_block != NULL && sym != NULL && !typeparam
7507 100900 : && strcmp (sym->name, gfc_new_block->name) == 0)
7508 : {
7509 0 : gfc_error ("Name %qs at %C is the name of the procedure",
7510 : sym->name);
7511 0 : m = MATCH_ERROR;
7512 0 : goto cleanup;
7513 : }
7514 :
7515 237953 : if (gfc_match_char (')') == MATCH_YES)
7516 126259 : goto ok;
7517 :
7518 111694 : m = gfc_match_char (',');
7519 111694 : if (m != MATCH_YES)
7520 : {
7521 48940 : if (typeparam)
7522 1 : gfc_error_now ("Expected parameter list in type declaration "
7523 : "at %C");
7524 : else
7525 48939 : gfc_error ("Unexpected junk in formal argument list at %C");
7526 48940 : goto cleanup;
7527 : }
7528 : }
7529 :
7530 143617 : ok:
7531 : /* Check for duplicate symbols in the formal argument list. */
7532 143617 : if (head != NULL)
7533 : {
7534 186669 : for (p = head; p->next; p = p->next)
7535 : {
7536 60458 : if (p->sym == NULL)
7537 338 : continue;
7538 :
7539 237961 : for (q = p->next; q; q = q->next)
7540 177889 : if (p->sym == q->sym)
7541 : {
7542 48 : if (typeparam)
7543 1 : gfc_error_now ("Duplicate name %qs in parameter "
7544 : "list at %C", p->sym->name);
7545 : else
7546 47 : gfc_error ("Duplicate symbol %qs in formal argument "
7547 : "list at %C", p->sym->name);
7548 :
7549 48 : m = MATCH_ERROR;
7550 48 : goto cleanup;
7551 : }
7552 : }
7553 : }
7554 :
7555 143569 : if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL))
7556 : {
7557 0 : m = MATCH_ERROR;
7558 0 : goto cleanup;
7559 : }
7560 :
7561 : /* gfc_error_now used in following and return with MATCH_YES because
7562 : doing otherwise results in a cascade of extraneous errors and in
7563 : some cases an ICE in symbol.cc(gfc_release_symbol). */
7564 143569 : if (progname->attr.module_procedure && progname->attr.host_assoc)
7565 : {
7566 195 : bool arg_count_mismatch = false;
7567 :
7568 195 : if (!formal && head)
7569 : arg_count_mismatch = true;
7570 :
7571 : /* Abbreviated module procedure declaration is not meant to have any
7572 : formal arguments! */
7573 195 : if (!progname->abr_modproc_decl && formal && !head)
7574 195 : arg_count_mismatch = true;
7575 :
7576 377 : for (p = formal, q = head; p && q; p = p->next, q = q->next)
7577 : {
7578 182 : if ((p->next != NULL && q->next == NULL)
7579 181 : || (p->next == NULL && q->next != NULL))
7580 : arg_count_mismatch = true;
7581 180 : else if ((p->sym == NULL && q->sym == NULL)
7582 180 : || (p->sym && q->sym
7583 178 : && strcmp (p->sym->name, q->sym->name) == 0))
7584 176 : continue;
7585 : else
7586 : {
7587 4 : if (q->sym == NULL)
7588 1 : gfc_error_now ("MODULE PROCEDURE formal argument %qs "
7589 : "conflicts with alternate return at %C",
7590 : p->sym->name);
7591 3 : else if (p->sym == NULL)
7592 1 : gfc_error_now ("MODULE PROCEDURE formal argument is "
7593 : "alternate return and conflicts with "
7594 : "%qs in the separate declaration at %C",
7595 : q->sym->name);
7596 : else
7597 2 : gfc_error_now ("Mismatch in MODULE PROCEDURE formal "
7598 : "argument names (%s/%s) at %C",
7599 : p->sym->name, q->sym->name);
7600 : }
7601 : }
7602 :
7603 195 : if (arg_count_mismatch)
7604 4 : gfc_error_now ("Mismatch in number of MODULE PROCEDURE "
7605 : "formal arguments at %C");
7606 : }
7607 :
7608 : return MATCH_YES;
7609 :
7610 65802 : cleanup:
7611 65802 : gfc_free_formal_arglist (head);
7612 65802 : return m;
7613 : }
7614 :
7615 :
7616 : /* Match a RESULT specification following a function declaration or
7617 : ENTRY statement. Also matches the end-of-statement. */
7618 :
7619 : static match
7620 8698 : match_result (gfc_symbol *function, gfc_symbol **result)
7621 : {
7622 8698 : char name[GFC_MAX_SYMBOL_LEN + 1];
7623 8698 : gfc_symbol *r;
7624 8698 : match m;
7625 :
7626 8698 : if (gfc_match (" result (") != MATCH_YES)
7627 : return MATCH_NO;
7628 :
7629 6142 : m = gfc_match_name (name);
7630 6142 : if (m != MATCH_YES)
7631 : return m;
7632 :
7633 : /* Get the right paren, and that's it because there could be the
7634 : bind(c) attribute after the result clause. */
7635 6142 : if (gfc_match_char (')') != MATCH_YES)
7636 : {
7637 : /* TODO: should report the missing right paren here. */
7638 : return MATCH_ERROR;
7639 : }
7640 :
7641 6142 : if (strcmp (function->name, name) == 0)
7642 : {
7643 1 : gfc_error ("RESULT variable at %C must be different than function name");
7644 1 : return MATCH_ERROR;
7645 : }
7646 :
7647 6141 : if (gfc_get_symbol (name, NULL, &r))
7648 : return MATCH_ERROR;
7649 :
7650 6141 : if (!gfc_add_result (&r->attr, r->name, NULL))
7651 : return MATCH_ERROR;
7652 :
7653 6141 : *result = r;
7654 :
7655 6141 : return MATCH_YES;
7656 : }
7657 :
7658 :
7659 : /* Match a function suffix, which could be a combination of a result
7660 : clause and BIND(C), either one, or neither. The draft does not
7661 : require them to come in a specific order. */
7662 :
7663 : static match
7664 8702 : gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result)
7665 : {
7666 8702 : match is_bind_c; /* Found bind(c). */
7667 8702 : match is_result; /* Found result clause. */
7668 8702 : match found_match; /* Status of whether we've found a good match. */
7669 8702 : char peek_char; /* Character we're going to peek at. */
7670 8702 : bool allow_binding_name;
7671 :
7672 : /* Initialize to having found nothing. */
7673 8702 : found_match = MATCH_NO;
7674 8702 : is_bind_c = MATCH_NO;
7675 8702 : is_result = MATCH_NO;
7676 :
7677 : /* Get the next char to narrow between result and bind(c). */
7678 8702 : gfc_gobble_whitespace ();
7679 8702 : peek_char = gfc_peek_ascii_char ();
7680 :
7681 : /* C binding names are not allowed for internal procedures. */
7682 8702 : if (gfc_current_state () == COMP_CONTAINS
7683 4869 : && sym->ns->proc_name->attr.flavor != FL_MODULE)
7684 : allow_binding_name = false;
7685 : else
7686 6998 : allow_binding_name = true;
7687 :
7688 8702 : switch (peek_char)
7689 : {
7690 5771 : case 'r':
7691 : /* Look for result clause. */
7692 5771 : is_result = match_result (sym, result);
7693 5771 : if (is_result == MATCH_YES)
7694 : {
7695 : /* Now see if there is a bind(c) after it. */
7696 5770 : is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
7697 : /* We've found the result clause and possibly bind(c). */
7698 5770 : found_match = MATCH_YES;
7699 : }
7700 : else
7701 : /* This should only be MATCH_ERROR. */
7702 : found_match = is_result;
7703 : break;
7704 2931 : case 'b':
7705 : /* Look for bind(c) first. */
7706 2931 : is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
7707 2931 : if (is_bind_c == MATCH_YES)
7708 : {
7709 : /* Now see if a result clause followed it. */
7710 2927 : is_result = match_result (sym, result);
7711 2927 : found_match = MATCH_YES;
7712 : }
7713 : else
7714 : {
7715 : /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */
7716 : found_match = MATCH_ERROR;
7717 : }
7718 : break;
7719 0 : default:
7720 0 : gfc_error ("Unexpected junk after function declaration at %C");
7721 0 : found_match = MATCH_ERROR;
7722 0 : break;
7723 : }
7724 :
7725 8697 : if (is_bind_c == MATCH_YES)
7726 : {
7727 : /* Fortran 2008 draft allows BIND(C) for internal procedures. */
7728 3094 : if (gfc_current_state () == COMP_CONTAINS
7729 423 : && sym->ns->proc_name->attr.flavor != FL_MODULE
7730 3112 : && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute "
7731 : "at %L may not be specified for an internal "
7732 : "procedure", &gfc_current_locus))
7733 : return MATCH_ERROR;
7734 :
7735 3091 : if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1))
7736 0 : return MATCH_ERROR;
7737 : }
7738 :
7739 : return found_match;
7740 : }
7741 :
7742 :
7743 : /* Procedure pointer return value without RESULT statement:
7744 : Add "hidden" result variable named "ppr@". */
7745 :
7746 : static bool
7747 75884 : add_hidden_procptr_result (gfc_symbol *sym)
7748 : {
7749 75884 : bool case1,case2;
7750 :
7751 75884 : if (gfc_notification_std (GFC_STD_F2003) == ERROR)
7752 : return false;
7753 :
7754 : /* First usage case: PROCEDURE and EXTERNAL statements. */
7755 1539 : case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block ()
7756 1539 : && strcmp (gfc_current_block ()->name, sym->name) == 0
7757 76283 : && sym->attr.external;
7758 : /* Second usage case: INTERFACE statements. */
7759 14892 : case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous
7760 14892 : && gfc_state_stack->previous->state == COMP_FUNCTION
7761 75931 : && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0;
7762 :
7763 75700 : if (case1 || case2)
7764 : {
7765 125 : gfc_symtree *stree;
7766 125 : if (case1)
7767 95 : gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false);
7768 : else
7769 : {
7770 30 : gfc_symtree *st2;
7771 30 : gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false);
7772 30 : st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@");
7773 30 : st2->n.sym = stree->n.sym;
7774 30 : stree->n.sym->refs++;
7775 : }
7776 125 : sym->result = stree->n.sym;
7777 :
7778 125 : sym->result->attr.proc_pointer = sym->attr.proc_pointer;
7779 125 : sym->result->attr.pointer = sym->attr.pointer;
7780 125 : sym->result->attr.external = sym->attr.external;
7781 125 : sym->result->attr.referenced = sym->attr.referenced;
7782 125 : sym->result->ts = sym->ts;
7783 125 : sym->attr.proc_pointer = 0;
7784 125 : sym->attr.pointer = 0;
7785 125 : sym->attr.external = 0;
7786 125 : if (sym->result->attr.external && sym->result->attr.pointer)
7787 : {
7788 4 : sym->result->attr.pointer = 0;
7789 4 : sym->result->attr.proc_pointer = 1;
7790 : }
7791 :
7792 125 : return gfc_add_result (&sym->result->attr, sym->result->name, NULL);
7793 : }
7794 : /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */
7795 75605 : else if (sym->attr.function && !sym->attr.external && sym->attr.pointer
7796 411 : && sym->result && sym->result != sym && sym->result->attr.external
7797 28 : && sym == gfc_current_ns->proc_name
7798 28 : && sym == sym->result->ns->proc_name
7799 28 : && strcmp ("ppr@", sym->result->name) == 0)
7800 : {
7801 28 : sym->result->attr.proc_pointer = 1;
7802 28 : sym->attr.pointer = 0;
7803 28 : return true;
7804 : }
7805 : else
7806 : return false;
7807 : }
7808 :
7809 :
7810 : /* Match the interface for a PROCEDURE declaration,
7811 : including brackets (R1212). */
7812 :
7813 : static match
7814 1636 : match_procedure_interface (gfc_symbol **proc_if)
7815 : {
7816 1636 : match m;
7817 1636 : gfc_symtree *st;
7818 1636 : locus old_loc, entry_loc;
7819 1636 : gfc_namespace *old_ns = gfc_current_ns;
7820 1636 : char name[GFC_MAX_SYMBOL_LEN + 1];
7821 :
7822 1636 : old_loc = entry_loc = gfc_current_locus;
7823 1636 : gfc_clear_ts (¤t_ts);
7824 :
7825 1636 : if (gfc_match (" (") != MATCH_YES)
7826 : {
7827 1 : gfc_current_locus = entry_loc;
7828 1 : return MATCH_NO;
7829 : }
7830 :
7831 : /* Get the type spec. for the procedure interface. */
7832 1635 : old_loc = gfc_current_locus;
7833 1635 : m = gfc_match_decl_type_spec (¤t_ts, 0);
7834 1635 : gfc_gobble_whitespace ();
7835 1635 : if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')'))
7836 395 : goto got_ts;
7837 :
7838 1240 : if (m == MATCH_ERROR)
7839 : return m;
7840 :
7841 : /* Procedure interface is itself a procedure. */
7842 1240 : gfc_current_locus = old_loc;
7843 1240 : m = gfc_match_name (name);
7844 :
7845 : /* First look to see if it is already accessible in the current
7846 : namespace because it is use associated or contained. */
7847 1240 : st = NULL;
7848 1240 : if (gfc_find_sym_tree (name, NULL, 0, &st))
7849 : return MATCH_ERROR;
7850 :
7851 : /* If it is still not found, then try the parent namespace, if it
7852 : exists and create the symbol there if it is still not found. */
7853 1240 : if (gfc_current_ns->parent)
7854 435 : gfc_current_ns = gfc_current_ns->parent;
7855 1240 : if (st == NULL && gfc_get_ha_sym_tree (name, &st))
7856 : return MATCH_ERROR;
7857 :
7858 1240 : gfc_current_ns = old_ns;
7859 1240 : *proc_if = st->n.sym;
7860 :
7861 1240 : if (*proc_if)
7862 : {
7863 1240 : (*proc_if)->refs++;
7864 : /* Resolve interface if possible. That way, attr.procedure is only set
7865 : if it is declared by a later procedure-declaration-stmt, which is
7866 : invalid per F08:C1216 (cf. resolve_procedure_interface). */
7867 1240 : while ((*proc_if)->ts.interface
7868 1247 : && *proc_if != (*proc_if)->ts.interface)
7869 7 : *proc_if = (*proc_if)->ts.interface;
7870 :
7871 1240 : if ((*proc_if)->attr.flavor == FL_UNKNOWN
7872 389 : && (*proc_if)->ts.type == BT_UNKNOWN
7873 1629 : && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE,
7874 : (*proc_if)->name, NULL))
7875 : return MATCH_ERROR;
7876 : }
7877 :
7878 0 : got_ts:
7879 1635 : if (gfc_match (" )") != MATCH_YES)
7880 : {
7881 0 : gfc_current_locus = entry_loc;
7882 0 : return MATCH_NO;
7883 : }
7884 :
7885 : return MATCH_YES;
7886 : }
7887 :
7888 :
7889 : /* Match a PROCEDURE declaration (R1211). */
7890 :
7891 : static match
7892 1197 : match_procedure_decl (void)
7893 : {
7894 1197 : match m;
7895 1197 : gfc_symbol *sym, *proc_if = NULL;
7896 1197 : int num;
7897 1197 : gfc_expr *initializer = NULL;
7898 :
7899 : /* Parse interface (with brackets). */
7900 1197 : m = match_procedure_interface (&proc_if);
7901 1197 : if (m != MATCH_YES)
7902 : return m;
7903 :
7904 : /* Parse attributes (with colons). */
7905 1197 : m = match_attr_spec();
7906 1197 : if (m == MATCH_ERROR)
7907 : return MATCH_ERROR;
7908 :
7909 1196 : if (current_attr.allocatable)
7910 : {
7911 2 : current_attr.procedure = 1;
7912 2 : gfc_check_conflict (¤t_attr, NULL, &gfc_current_locus);
7913 2 : return MATCH_ERROR;
7914 : }
7915 :
7916 1194 : if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c)
7917 : {
7918 53 : current_attr.is_bind_c = 1;
7919 53 : has_name_equals = 0;
7920 53 : curr_binding_label = NULL;
7921 : }
7922 :
7923 : /* Get procedure symbols. */
7924 1194 : for(num=1;;num++)
7925 : {
7926 1273 : m = gfc_match_symbol (&sym, 0);
7927 1273 : if (m == MATCH_NO)
7928 1 : goto syntax;
7929 1272 : else if (m == MATCH_ERROR)
7930 : return m;
7931 :
7932 : /* Add current_attr to the symbol attributes. */
7933 1272 : if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL))
7934 : return MATCH_ERROR;
7935 :
7936 1270 : if (sym->attr.is_bind_c)
7937 : {
7938 : /* Check for C1218. */
7939 90 : if (!proc_if || !proc_if->attr.is_bind_c)
7940 : {
7941 1 : gfc_error ("BIND(C) attribute at %C requires "
7942 : "an interface with BIND(C)");
7943 1 : return MATCH_ERROR;
7944 : }
7945 : /* Check for C1217. */
7946 89 : if (has_name_equals && sym->attr.pointer)
7947 : {
7948 1 : gfc_error ("BIND(C) procedure with NAME may not have "
7949 : "POINTER attribute at %C");
7950 1 : return MATCH_ERROR;
7951 : }
7952 88 : if (has_name_equals && sym->attr.dummy)
7953 : {
7954 1 : gfc_error ("Dummy procedure at %C may not have "
7955 : "BIND(C) attribute with NAME");
7956 1 : return MATCH_ERROR;
7957 : }
7958 : /* Set binding label for BIND(C). */
7959 87 : if (!set_binding_label (&sym->binding_label, sym->name, num))
7960 : return MATCH_ERROR;
7961 : }
7962 :
7963 1266 : if (!gfc_add_external (&sym->attr, NULL))
7964 : return MATCH_ERROR;
7965 :
7966 1262 : if (add_hidden_procptr_result (sym))
7967 68 : sym = sym->result;
7968 :
7969 1262 : if (!gfc_add_proc (&sym->attr, sym->name, NULL))
7970 : return MATCH_ERROR;
7971 :
7972 : /* Set interface. */
7973 1262 : if (proc_if != NULL)
7974 : {
7975 919 : if (sym->ts.type != BT_UNKNOWN)
7976 : {
7977 1 : gfc_error ("Procedure %qs at %L already has basic type of %s",
7978 : sym->name, &gfc_current_locus,
7979 : gfc_basic_typename (sym->ts.type));
7980 1 : return MATCH_ERROR;
7981 : }
7982 918 : sym->ts.interface = proc_if;
7983 918 : sym->attr.untyped = 1;
7984 918 : sym->attr.if_source = IFSRC_IFBODY;
7985 : }
7986 343 : else if (current_ts.type != BT_UNKNOWN)
7987 : {
7988 199 : if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus))
7989 : return MATCH_ERROR;
7990 198 : sym->ts.interface = gfc_new_symbol ("", gfc_current_ns);
7991 198 : sym->ts.interface->ts = current_ts;
7992 198 : sym->ts.interface->attr.flavor = FL_PROCEDURE;
7993 198 : sym->ts.interface->attr.function = 1;
7994 198 : sym->attr.function = 1;
7995 198 : sym->attr.if_source = IFSRC_UNKNOWN;
7996 : }
7997 :
7998 1260 : if (gfc_match (" =>") == MATCH_YES)
7999 : {
8000 110 : if (!current_attr.pointer)
8001 : {
8002 0 : gfc_error ("Initialization at %C isn't for a pointer variable");
8003 0 : m = MATCH_ERROR;
8004 0 : goto cleanup;
8005 : }
8006 :
8007 110 : m = match_pointer_init (&initializer, 1);
8008 110 : if (m != MATCH_YES)
8009 1 : goto cleanup;
8010 :
8011 109 : if (!add_init_expr_to_sym (sym->name, &initializer,
8012 : &gfc_current_locus,
8013 : gfc_current_ns->cl_list))
8014 0 : goto cleanup;
8015 :
8016 : }
8017 :
8018 1259 : if (gfc_match_eos () == MATCH_YES)
8019 : return MATCH_YES;
8020 79 : if (gfc_match_char (',') != MATCH_YES)
8021 0 : goto syntax;
8022 : }
8023 :
8024 1 : syntax:
8025 1 : gfc_error ("Syntax error in PROCEDURE statement at %C");
8026 1 : return MATCH_ERROR;
8027 :
8028 1 : cleanup:
8029 : /* Free stuff up and return. */
8030 1 : gfc_free_expr (initializer);
8031 1 : return m;
8032 : }
8033 :
8034 :
8035 : static match
8036 : match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc);
8037 :
8038 :
8039 : /* Match a procedure pointer component declaration (R445). */
8040 :
8041 : static match
8042 439 : match_ppc_decl (void)
8043 : {
8044 439 : match m;
8045 439 : gfc_symbol *proc_if = NULL;
8046 439 : gfc_typespec ts;
8047 439 : int num;
8048 439 : gfc_component *c;
8049 439 : gfc_expr *initializer = NULL;
8050 439 : gfc_typebound_proc* tb;
8051 439 : char name[GFC_MAX_SYMBOL_LEN + 1];
8052 :
8053 : /* Parse interface (with brackets). */
8054 439 : m = match_procedure_interface (&proc_if);
8055 439 : if (m != MATCH_YES)
8056 1 : goto syntax;
8057 :
8058 : /* Parse attributes. */
8059 438 : tb = XCNEW (gfc_typebound_proc);
8060 438 : tb->where = gfc_current_locus;
8061 438 : m = match_binding_attributes (tb, false, true);
8062 438 : if (m == MATCH_ERROR)
8063 : return m;
8064 :
8065 435 : gfc_clear_attr (¤t_attr);
8066 435 : current_attr.procedure = 1;
8067 435 : current_attr.proc_pointer = 1;
8068 435 : current_attr.access = tb->access;
8069 435 : current_attr.flavor = FL_PROCEDURE;
8070 :
8071 : /* Match the colons (required). */
8072 435 : if (gfc_match (" ::") != MATCH_YES)
8073 : {
8074 1 : gfc_error ("Expected %<::%> after binding-attributes at %C");
8075 1 : return MATCH_ERROR;
8076 : }
8077 :
8078 : /* Check for C450. */
8079 434 : if (!tb->nopass && proc_if == NULL)
8080 : {
8081 2 : gfc_error("NOPASS or explicit interface required at %C");
8082 2 : return MATCH_ERROR;
8083 : }
8084 :
8085 432 : if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C"))
8086 : return MATCH_ERROR;
8087 :
8088 : /* Match PPC names. */
8089 431 : ts = current_ts;
8090 431 : for(num=1;;num++)
8091 : {
8092 432 : m = gfc_match_name (name);
8093 432 : if (m == MATCH_NO)
8094 0 : goto syntax;
8095 432 : else if (m == MATCH_ERROR)
8096 : return m;
8097 :
8098 432 : if (!gfc_add_component (gfc_current_block(), name, &c))
8099 : return MATCH_ERROR;
8100 :
8101 : /* Add current_attr to the symbol attributes. */
8102 432 : if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL))
8103 : return MATCH_ERROR;
8104 :
8105 432 : if (!gfc_add_external (&c->attr, NULL))
8106 : return MATCH_ERROR;
8107 :
8108 432 : if (!gfc_add_proc (&c->attr, name, NULL))
8109 : return MATCH_ERROR;
8110 :
8111 432 : if (num == 1)
8112 431 : c->tb = tb;
8113 : else
8114 : {
8115 1 : c->tb = XCNEW (gfc_typebound_proc);
8116 1 : c->tb->where = gfc_current_locus;
8117 1 : *c->tb = *tb;
8118 : }
8119 :
8120 432 : if (saved_kind_expr)
8121 0 : c->kind_expr = gfc_copy_expr (saved_kind_expr);
8122 :
8123 : /* Set interface. */
8124 432 : if (proc_if != NULL)
8125 : {
8126 365 : c->ts.interface = proc_if;
8127 365 : c->attr.untyped = 1;
8128 365 : c->attr.if_source = IFSRC_IFBODY;
8129 : }
8130 67 : else if (ts.type != BT_UNKNOWN)
8131 : {
8132 29 : c->ts = ts;
8133 29 : c->ts.interface = gfc_new_symbol ("", gfc_current_ns);
8134 29 : c->ts.interface->result = c->ts.interface;
8135 29 : c->ts.interface->ts = ts;
8136 29 : c->ts.interface->attr.flavor = FL_PROCEDURE;
8137 29 : c->ts.interface->attr.function = 1;
8138 29 : c->attr.function = 1;
8139 29 : c->attr.if_source = IFSRC_UNKNOWN;
8140 : }
8141 :
8142 432 : if (gfc_match (" =>") == MATCH_YES)
8143 : {
8144 79 : m = match_pointer_init (&initializer, 1);
8145 79 : if (m != MATCH_YES)
8146 : {
8147 0 : gfc_free_expr (initializer);
8148 0 : return m;
8149 : }
8150 79 : c->initializer = initializer;
8151 : }
8152 :
8153 432 : if (gfc_match_eos () == MATCH_YES)
8154 : return MATCH_YES;
8155 1 : if (gfc_match_char (',') != MATCH_YES)
8156 0 : goto syntax;
8157 : }
8158 :
8159 1 : syntax:
8160 1 : gfc_error ("Syntax error in procedure pointer component at %C");
8161 1 : return MATCH_ERROR;
8162 : }
8163 :
8164 :
8165 : /* Match a PROCEDURE declaration inside an interface (R1206). */
8166 :
8167 : static match
8168 1561 : match_procedure_in_interface (void)
8169 : {
8170 1561 : match m;
8171 1561 : gfc_symbol *sym;
8172 1561 : char name[GFC_MAX_SYMBOL_LEN + 1];
8173 1561 : locus old_locus;
8174 :
8175 1561 : if (current_interface.type == INTERFACE_NAMELESS
8176 1561 : || current_interface.type == INTERFACE_ABSTRACT)
8177 : {
8178 1 : gfc_error ("PROCEDURE at %C must be in a generic interface");
8179 1 : return MATCH_ERROR;
8180 : }
8181 :
8182 : /* Check if the F2008 optional double colon appears. */
8183 1560 : gfc_gobble_whitespace ();
8184 1560 : old_locus = gfc_current_locus;
8185 1560 : if (gfc_match ("::") == MATCH_YES)
8186 : {
8187 875 : if (!gfc_notify_std (GFC_STD_F2008, "double colon in "
8188 : "MODULE PROCEDURE statement at %L", &old_locus))
8189 : return MATCH_ERROR;
8190 : }
8191 : else
8192 685 : gfc_current_locus = old_locus;
8193 :
8194 2214 : for(;;)
8195 : {
8196 2214 : m = gfc_match_name (name);
8197 2214 : if (m == MATCH_NO)
8198 0 : goto syntax;
8199 2214 : else if (m == MATCH_ERROR)
8200 : return m;
8201 2214 : if (gfc_get_symbol (name, gfc_current_ns->parent, &sym))
8202 : return MATCH_ERROR;
8203 :
8204 2214 : if (!gfc_add_interface (sym))
8205 : return MATCH_ERROR;
8206 :
8207 2213 : if (gfc_match_eos () == MATCH_YES)
8208 : break;
8209 655 : if (gfc_match_char (',') != MATCH_YES)
8210 0 : goto syntax;
8211 : }
8212 :
8213 : return MATCH_YES;
8214 :
8215 0 : syntax:
8216 0 : gfc_error ("Syntax error in PROCEDURE statement at %C");
8217 0 : return MATCH_ERROR;
8218 : }
8219 :
8220 :
8221 : /* General matcher for PROCEDURE declarations. */
8222 :
8223 : static match match_procedure_in_type (void);
8224 :
8225 : match
8226 6451 : gfc_match_procedure (void)
8227 : {
8228 6451 : match m;
8229 :
8230 6451 : switch (gfc_current_state ())
8231 : {
8232 1197 : case COMP_NONE:
8233 1197 : case COMP_PROGRAM:
8234 1197 : case COMP_MODULE:
8235 1197 : case COMP_SUBMODULE:
8236 1197 : case COMP_SUBROUTINE:
8237 1197 : case COMP_FUNCTION:
8238 1197 : case COMP_BLOCK:
8239 1197 : m = match_procedure_decl ();
8240 1197 : break;
8241 1561 : case COMP_INTERFACE:
8242 1561 : m = match_procedure_in_interface ();
8243 1561 : break;
8244 439 : case COMP_DERIVED:
8245 439 : m = match_ppc_decl ();
8246 439 : break;
8247 3254 : case COMP_DERIVED_CONTAINS:
8248 3254 : m = match_procedure_in_type ();
8249 3254 : break;
8250 : default:
8251 : return MATCH_NO;
8252 : }
8253 :
8254 6451 : if (m != MATCH_YES)
8255 : return m;
8256 :
8257 6394 : if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C"))
8258 4 : return MATCH_ERROR;
8259 :
8260 : return m;
8261 : }
8262 :
8263 :
8264 : /* Warn if a matched procedure has the same name as an intrinsic; this is
8265 : simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current
8266 : parser-state-stack to find out whether we're in a module. */
8267 :
8268 : static void
8269 64202 : do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func)
8270 : {
8271 64202 : bool in_module;
8272 :
8273 128404 : in_module = (gfc_state_stack->previous
8274 64202 : && (gfc_state_stack->previous->state == COMP_MODULE
8275 52404 : || gfc_state_stack->previous->state == COMP_SUBMODULE));
8276 :
8277 64202 : gfc_warn_intrinsic_shadow (sym, in_module, func);
8278 64202 : }
8279 :
8280 :
8281 : /* Match a function declaration. */
8282 :
8283 : match
8284 131382 : gfc_match_function_decl (void)
8285 : {
8286 131382 : char name[GFC_MAX_SYMBOL_LEN + 1];
8287 131382 : gfc_symbol *sym, *result;
8288 131382 : locus old_loc;
8289 131382 : match m;
8290 131382 : match suffix_match;
8291 131382 : match found_match; /* Status returned by match func. */
8292 :
8293 131382 : if (gfc_current_state () != COMP_NONE
8294 82937 : && gfc_current_state () != COMP_INTERFACE
8295 53473 : && gfc_current_state () != COMP_CONTAINS)
8296 : return MATCH_NO;
8297 :
8298 131382 : gfc_clear_ts (¤t_ts);
8299 :
8300 131382 : old_loc = gfc_current_locus;
8301 :
8302 131382 : m = gfc_match_prefix (¤t_ts);
8303 131382 : if (m != MATCH_YES)
8304 : {
8305 10136 : gfc_current_locus = old_loc;
8306 10136 : return m;
8307 : }
8308 :
8309 121246 : if (gfc_match ("function% %n", name) != MATCH_YES)
8310 : {
8311 100995 : gfc_current_locus = old_loc;
8312 100995 : return MATCH_NO;
8313 : }
8314 :
8315 20251 : if (get_proc_name (name, &sym, false))
8316 : return MATCH_ERROR;
8317 :
8318 20246 : if (add_hidden_procptr_result (sym))
8319 20 : sym = sym->result;
8320 :
8321 20246 : if (current_attr.module_procedure)
8322 : {
8323 304 : sym->attr.module_procedure = 1;
8324 304 : if (gfc_current_state () == COMP_INTERFACE)
8325 215 : gfc_current_ns->has_import_set = 1;
8326 : }
8327 :
8328 20246 : gfc_new_block = sym;
8329 :
8330 20246 : m = gfc_match_formal_arglist (sym, 0, 0);
8331 20246 : if (m == MATCH_NO)
8332 : {
8333 6 : gfc_error ("Expected formal argument list in function "
8334 : "definition at %C");
8335 6 : m = MATCH_ERROR;
8336 6 : goto cleanup;
8337 : }
8338 20240 : else if (m == MATCH_ERROR)
8339 0 : goto cleanup;
8340 :
8341 20240 : result = NULL;
8342 :
8343 : /* According to the draft, the bind(c) and result clause can
8344 : come in either order after the formal_arg_list (i.e., either
8345 : can be first, both can exist together or by themselves or neither
8346 : one). Therefore, the match_result can't match the end of the
8347 : string, and check for the bind(c) or result clause in either order. */
8348 20240 : found_match = gfc_match_eos ();
8349 :
8350 : /* Make sure that it isn't already declared as BIND(C). If it is, it
8351 : must have been marked BIND(C) with a BIND(C) attribute and that is
8352 : not allowed for procedures. */
8353 20240 : if (sym->attr.is_bind_c == 1)
8354 : {
8355 3 : sym->attr.is_bind_c = 0;
8356 :
8357 3 : if (gfc_state_stack->previous
8358 3 : && gfc_state_stack->previous->state != COMP_SUBMODULE)
8359 : {
8360 1 : locus loc;
8361 1 : loc = sym->old_symbol != NULL
8362 1 : ? sym->old_symbol->declared_at : gfc_current_locus;
8363 1 : gfc_error_now ("BIND(C) attribute at %L can only be used for "
8364 : "variables or common blocks", &loc);
8365 : }
8366 : }
8367 :
8368 20240 : if (found_match != MATCH_YES)
8369 : {
8370 : /* If we haven't found the end-of-statement, look for a suffix. */
8371 8453 : suffix_match = gfc_match_suffix (sym, &result);
8372 8453 : if (suffix_match == MATCH_YES)
8373 : /* Need to get the eos now. */
8374 8445 : found_match = gfc_match_eos ();
8375 : else
8376 : found_match = suffix_match;
8377 : }
8378 :
8379 : /* F2018 C1550 (R1526) If MODULE appears in the prefix of a module
8380 : subprogram and a binding label is specified, it shall be the
8381 : same as the binding label specified in the corresponding module
8382 : procedure interface body. */
8383 20240 : if (sym->attr.is_bind_c && sym->attr.module_procedure && sym->old_symbol
8384 3 : && strcmp (sym->name, sym->old_symbol->name) == 0
8385 3 : && sym->binding_label && sym->old_symbol->binding_label
8386 2 : && strcmp (sym->binding_label, sym->old_symbol->binding_label) != 0)
8387 : {
8388 1 : const char *null = "NULL", *s1, *s2;
8389 1 : s1 = sym->binding_label;
8390 1 : if (!s1) s1 = null;
8391 1 : s2 = sym->old_symbol->binding_label;
8392 1 : if (!s2) s2 = null;
8393 1 : gfc_error ("Mismatch in BIND(C) names (%qs/%qs) at %C", s1, s2);
8394 1 : sym->refs++; /* Needed to avoid an ICE in gfc_release_symbol */
8395 1 : return MATCH_ERROR;
8396 : }
8397 :
8398 20239 : if(found_match != MATCH_YES)
8399 : m = MATCH_ERROR;
8400 : else
8401 : {
8402 : /* Make changes to the symbol. */
8403 20231 : m = MATCH_ERROR;
8404 :
8405 20231 : if (!gfc_add_function (&sym->attr, sym->name, NULL))
8406 0 : goto cleanup;
8407 :
8408 20231 : if (!gfc_missing_attr (&sym->attr, NULL))
8409 0 : goto cleanup;
8410 :
8411 20231 : if (!copy_prefix (&sym->attr, &sym->declared_at))
8412 : {
8413 1 : if(!sym->attr.module_procedure)
8414 1 : goto cleanup;
8415 : else
8416 0 : gfc_error_check ();
8417 : }
8418 :
8419 : /* Delay matching the function characteristics until after the
8420 : specification block by signalling kind=-1. */
8421 20230 : sym->declared_at = old_loc;
8422 20230 : if (current_ts.type != BT_UNKNOWN)
8423 : current_ts.kind = -1;
8424 : else
8425 13238 : current_ts.kind = 0;
8426 :
8427 20230 : if (result == NULL)
8428 : {
8429 14301 : if (current_ts.type != BT_UNKNOWN
8430 14301 : && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus))
8431 1 : goto cleanup;
8432 14300 : sym->result = sym;
8433 : }
8434 : else
8435 : {
8436 5929 : if (current_ts.type != BT_UNKNOWN
8437 5929 : && !gfc_add_type (result, ¤t_ts, &gfc_current_locus))
8438 0 : goto cleanup;
8439 5929 : sym->result = result;
8440 : }
8441 :
8442 : /* Warn if this procedure has the same name as an intrinsic. */
8443 20229 : do_warn_intrinsic_shadow (sym, true);
8444 :
8445 20229 : return MATCH_YES;
8446 : }
8447 :
8448 16 : cleanup:
8449 16 : gfc_current_locus = old_loc;
8450 16 : return m;
8451 : }
8452 :
8453 :
8454 : /* This is mostly a copy of parse.cc(add_global_procedure) but modified to
8455 : pass the name of the entry, rather than the gfc_current_block name, and
8456 : to return false upon finding an existing global entry. */
8457 :
8458 : static bool
8459 539 : add_global_entry (const char *name, const char *binding_label, bool sub,
8460 : locus *where)
8461 : {
8462 539 : gfc_gsymbol *s;
8463 539 : enum gfc_symbol_type type;
8464 :
8465 539 : type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION;
8466 :
8467 : /* Only in Fortran 2003: For procedures with a binding label also the Fortran
8468 : name is a global identifier. */
8469 539 : if (!binding_label || gfc_notification_std (GFC_STD_F2008))
8470 : {
8471 516 : s = gfc_get_gsymbol (name, false);
8472 :
8473 516 : if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type))
8474 : {
8475 2 : gfc_global_used (s, where);
8476 2 : return false;
8477 : }
8478 : else
8479 : {
8480 514 : s->type = type;
8481 514 : s->sym_name = name;
8482 514 : s->where = *where;
8483 514 : s->defined = 1;
8484 514 : s->ns = gfc_current_ns;
8485 : }
8486 : }
8487 :
8488 : /* Don't add the symbol multiple times. */
8489 537 : if (binding_label
8490 537 : && (!gfc_notification_std (GFC_STD_F2008)
8491 0 : || strcmp (name, binding_label) != 0))
8492 : {
8493 23 : s = gfc_get_gsymbol (binding_label, true);
8494 :
8495 23 : if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type))
8496 : {
8497 1 : gfc_global_used (s, where);
8498 1 : return false;
8499 : }
8500 : else
8501 : {
8502 22 : s->type = type;
8503 22 : s->sym_name = gfc_get_string ("%s", name);
8504 22 : s->binding_label = binding_label;
8505 22 : s->where = *where;
8506 22 : s->defined = 1;
8507 22 : s->ns = gfc_current_ns;
8508 : }
8509 : }
8510 :
8511 : return true;
8512 : }
8513 :
8514 :
8515 : /* Match an ENTRY statement. */
8516 :
8517 : match
8518 805 : gfc_match_entry (void)
8519 : {
8520 805 : gfc_symbol *proc;
8521 805 : gfc_symbol *result;
8522 805 : gfc_symbol *entry;
8523 805 : char name[GFC_MAX_SYMBOL_LEN + 1];
8524 805 : gfc_compile_state state;
8525 805 : match m;
8526 805 : gfc_entry_list *el;
8527 805 : locus old_loc;
8528 805 : bool module_procedure;
8529 805 : char peek_char;
8530 805 : match is_bind_c;
8531 :
8532 805 : m = gfc_match_name (name);
8533 805 : if (m != MATCH_YES)
8534 : return m;
8535 :
8536 805 : if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C"))
8537 : return MATCH_ERROR;
8538 :
8539 805 : state = gfc_current_state ();
8540 805 : if (state != COMP_SUBROUTINE && state != COMP_FUNCTION)
8541 : {
8542 3 : switch (state)
8543 : {
8544 0 : case COMP_PROGRAM:
8545 0 : gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM");
8546 0 : break;
8547 0 : case COMP_MODULE:
8548 0 : gfc_error ("ENTRY statement at %C cannot appear within a MODULE");
8549 0 : break;
8550 0 : case COMP_SUBMODULE:
8551 0 : gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE");
8552 0 : break;
8553 0 : case COMP_BLOCK_DATA:
8554 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8555 : "a BLOCK DATA");
8556 0 : break;
8557 0 : case COMP_INTERFACE:
8558 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8559 : "an INTERFACE");
8560 0 : break;
8561 1 : case COMP_STRUCTURE:
8562 1 : gfc_error ("ENTRY statement at %C cannot appear within "
8563 : "a STRUCTURE block");
8564 1 : break;
8565 0 : case COMP_DERIVED:
8566 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8567 : "a DERIVED TYPE block");
8568 0 : break;
8569 0 : case COMP_IF:
8570 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8571 : "an IF-THEN block");
8572 0 : break;
8573 0 : case COMP_DO:
8574 0 : case COMP_DO_CONCURRENT:
8575 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8576 : "a DO block");
8577 0 : break;
8578 0 : case COMP_SELECT:
8579 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8580 : "a SELECT block");
8581 0 : break;
8582 0 : case COMP_FORALL:
8583 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8584 : "a FORALL block");
8585 0 : break;
8586 0 : case COMP_WHERE:
8587 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8588 : "a WHERE block");
8589 0 : break;
8590 0 : case COMP_CONTAINS:
8591 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8592 : "a contained subprogram");
8593 0 : break;
8594 2 : default:
8595 2 : gfc_error ("Unexpected ENTRY statement at %C");
8596 : }
8597 : return MATCH_ERROR;
8598 : }
8599 :
8600 802 : if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION)
8601 802 : && gfc_state_stack->previous->state == COMP_INTERFACE)
8602 : {
8603 1 : gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE");
8604 1 : return MATCH_ERROR;
8605 : }
8606 :
8607 1602 : module_procedure = gfc_current_ns->parent != NULL
8608 260 : && gfc_current_ns->parent->proc_name
8609 801 : && gfc_current_ns->parent->proc_name->attr.flavor
8610 260 : == FL_MODULE;
8611 :
8612 801 : if (gfc_current_ns->parent != NULL
8613 260 : && gfc_current_ns->parent->proc_name
8614 260 : && !module_procedure)
8615 : {
8616 0 : gfc_error("ENTRY statement at %C cannot appear in a "
8617 : "contained procedure");
8618 0 : return MATCH_ERROR;
8619 : }
8620 :
8621 : /* Module function entries need special care in get_proc_name
8622 : because previous references within the function will have
8623 : created symbols attached to the current namespace. */
8624 1342 : if (get_proc_name (name, &entry,
8625 : gfc_current_ns->parent != NULL
8626 : && module_procedure))
8627 : return MATCH_ERROR;
8628 :
8629 799 : proc = gfc_current_block ();
8630 :
8631 : /* Make sure that it isn't already declared as BIND(C). If it is, it
8632 : must have been marked BIND(C) with a BIND(C) attribute and that is
8633 : not allowed for procedures. */
8634 799 : if (entry->attr.is_bind_c == 1)
8635 : {
8636 0 : locus loc;
8637 :
8638 0 : entry->attr.is_bind_c = 0;
8639 :
8640 0 : loc = entry->old_symbol != NULL
8641 0 : ? entry->old_symbol->declared_at : gfc_current_locus;
8642 0 : gfc_error_now ("BIND(C) attribute at %L can only be used for "
8643 : "variables or common blocks", &loc);
8644 : }
8645 :
8646 : /* Check what next non-whitespace character is so we can tell if there
8647 : is the required parens if we have a BIND(C). */
8648 799 : old_loc = gfc_current_locus;
8649 799 : gfc_gobble_whitespace ();
8650 799 : peek_char = gfc_peek_ascii_char ();
8651 :
8652 799 : if (state == COMP_SUBROUTINE)
8653 : {
8654 138 : m = gfc_match_formal_arglist (entry, 0, 1);
8655 138 : if (m != MATCH_YES)
8656 : return MATCH_ERROR;
8657 :
8658 : /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can
8659 : never be an internal procedure. */
8660 138 : is_bind_c = gfc_match_bind_c (entry, true);
8661 138 : if (is_bind_c == MATCH_ERROR)
8662 : return MATCH_ERROR;
8663 138 : if (is_bind_c == MATCH_YES)
8664 : {
8665 22 : if (peek_char != '(')
8666 : {
8667 0 : gfc_error ("Missing required parentheses before BIND(C) at %C");
8668 0 : return MATCH_ERROR;
8669 : }
8670 :
8671 22 : if (!gfc_add_is_bind_c (&(entry->attr), entry->name,
8672 22 : &(entry->declared_at), 1))
8673 : return MATCH_ERROR;
8674 :
8675 : }
8676 :
8677 138 : if (!gfc_current_ns->parent
8678 138 : && !add_global_entry (name, entry->binding_label, true,
8679 : &old_loc))
8680 : return MATCH_ERROR;
8681 :
8682 : /* An entry in a subroutine. */
8683 135 : if (!gfc_add_entry (&entry->attr, entry->name, NULL)
8684 135 : || !gfc_add_subroutine (&entry->attr, entry->name, NULL))
8685 : return MATCH_ERROR;
8686 : }
8687 : else
8688 : {
8689 : /* An entry in a function.
8690 : We need to take special care because writing
8691 : ENTRY f()
8692 : as
8693 : ENTRY f
8694 : is allowed, whereas
8695 : ENTRY f() RESULT (r)
8696 : can't be written as
8697 : ENTRY f RESULT (r). */
8698 661 : if (gfc_match_eos () == MATCH_YES)
8699 : {
8700 24 : gfc_current_locus = old_loc;
8701 : /* Match the empty argument list, and add the interface to
8702 : the symbol. */
8703 24 : m = gfc_match_formal_arglist (entry, 0, 1);
8704 : }
8705 : else
8706 637 : m = gfc_match_formal_arglist (entry, 0, 0);
8707 :
8708 661 : if (m != MATCH_YES)
8709 : return MATCH_ERROR;
8710 :
8711 660 : result = NULL;
8712 :
8713 660 : if (gfc_match_eos () == MATCH_YES)
8714 : {
8715 411 : if (!gfc_add_entry (&entry->attr, entry->name, NULL)
8716 411 : || !gfc_add_function (&entry->attr, entry->name, NULL))
8717 : return MATCH_ERROR;
8718 :
8719 409 : entry->result = entry;
8720 : }
8721 : else
8722 : {
8723 249 : m = gfc_match_suffix (entry, &result);
8724 249 : if (m == MATCH_NO)
8725 0 : gfc_syntax_error (ST_ENTRY);
8726 249 : if (m != MATCH_YES)
8727 : return MATCH_ERROR;
8728 :
8729 249 : if (result)
8730 : {
8731 212 : if (!gfc_add_result (&result->attr, result->name, NULL)
8732 212 : || !gfc_add_entry (&entry->attr, result->name, NULL)
8733 424 : || !gfc_add_function (&entry->attr, result->name, NULL))
8734 : return MATCH_ERROR;
8735 212 : entry->result = result;
8736 : }
8737 : else
8738 : {
8739 37 : if (!gfc_add_entry (&entry->attr, entry->name, NULL)
8740 37 : || !gfc_add_function (&entry->attr, entry->name, NULL))
8741 : return MATCH_ERROR;
8742 37 : entry->result = entry;
8743 : }
8744 : }
8745 :
8746 658 : if (!gfc_current_ns->parent
8747 658 : && !add_global_entry (name, entry->binding_label, false,
8748 : &old_loc))
8749 : return MATCH_ERROR;
8750 : }
8751 :
8752 790 : if (gfc_match_eos () != MATCH_YES)
8753 : {
8754 0 : gfc_syntax_error (ST_ENTRY);
8755 0 : return MATCH_ERROR;
8756 : }
8757 :
8758 : /* F2018:C1546 An elemental procedure shall not have the BIND attribute. */
8759 790 : if (proc->attr.elemental && entry->attr.is_bind_c)
8760 : {
8761 2 : gfc_error ("ENTRY statement at %L with BIND(C) prohibited in an "
8762 : "elemental procedure", &entry->declared_at);
8763 2 : return MATCH_ERROR;
8764 : }
8765 :
8766 788 : entry->attr.recursive = proc->attr.recursive;
8767 788 : entry->attr.elemental = proc->attr.elemental;
8768 788 : entry->attr.pure = proc->attr.pure;
8769 :
8770 788 : el = gfc_get_entry_list ();
8771 788 : el->sym = entry;
8772 788 : el->next = gfc_current_ns->entries;
8773 788 : gfc_current_ns->entries = el;
8774 788 : if (el->next)
8775 85 : el->id = el->next->id + 1;
8776 : else
8777 : el->id = 1;
8778 :
8779 788 : new_st.op = EXEC_ENTRY;
8780 788 : new_st.ext.entry = el;
8781 :
8782 788 : return MATCH_YES;
8783 : }
8784 :
8785 :
8786 : /* Match a subroutine statement, including optional prefixes. */
8787 :
8788 : match
8789 819890 : gfc_match_subroutine (void)
8790 : {
8791 819890 : char name[GFC_MAX_SYMBOL_LEN + 1];
8792 819890 : gfc_symbol *sym;
8793 819890 : match m;
8794 819890 : match is_bind_c;
8795 819890 : char peek_char;
8796 819890 : bool allow_binding_name;
8797 819890 : locus loc;
8798 :
8799 819890 : if (gfc_current_state () != COMP_NONE
8800 777353 : && gfc_current_state () != COMP_INTERFACE
8801 754487 : && gfc_current_state () != COMP_CONTAINS)
8802 : return MATCH_NO;
8803 :
8804 108223 : m = gfc_match_prefix (NULL);
8805 108223 : if (m != MATCH_YES)
8806 : return m;
8807 :
8808 98097 : loc = gfc_current_locus;
8809 98097 : m = gfc_match ("subroutine% %n", name);
8810 98097 : if (m != MATCH_YES)
8811 : return m;
8812 :
8813 44009 : if (get_proc_name (name, &sym, false))
8814 : return MATCH_ERROR;
8815 :
8816 : /* Set declared_at as it might point to, e.g., a PUBLIC statement, if
8817 : the symbol existed before. */
8818 43998 : sym->declared_at = gfc_get_location_range (NULL, 0, &loc, 1,
8819 : &gfc_current_locus);
8820 :
8821 43998 : if (current_attr.module_procedure)
8822 : {
8823 429 : sym->attr.module_procedure = 1;
8824 429 : if (gfc_current_state () == COMP_INTERFACE)
8825 302 : gfc_current_ns->has_import_set = 1;
8826 : }
8827 :
8828 43998 : if (add_hidden_procptr_result (sym))
8829 9 : sym = sym->result;
8830 :
8831 43998 : gfc_new_block = sym;
8832 :
8833 : /* Check what next non-whitespace character is so we can tell if there
8834 : is the required parens if we have a BIND(C). */
8835 43998 : gfc_gobble_whitespace ();
8836 43998 : peek_char = gfc_peek_ascii_char ();
8837 :
8838 43998 : if (!gfc_add_subroutine (&sym->attr, sym->name, NULL))
8839 : return MATCH_ERROR;
8840 :
8841 43995 : if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES)
8842 : return MATCH_ERROR;
8843 :
8844 : /* Make sure that it isn't already declared as BIND(C). If it is, it
8845 : must have been marked BIND(C) with a BIND(C) attribute and that is
8846 : not allowed for procedures. */
8847 43995 : if (sym->attr.is_bind_c == 1)
8848 : {
8849 4 : sym->attr.is_bind_c = 0;
8850 :
8851 4 : if (gfc_state_stack->previous
8852 4 : && gfc_state_stack->previous->state != COMP_SUBMODULE)
8853 : {
8854 2 : locus loc;
8855 2 : loc = sym->old_symbol != NULL
8856 2 : ? sym->old_symbol->declared_at : gfc_current_locus;
8857 2 : gfc_error_now ("BIND(C) attribute at %L can only be used for "
8858 : "variables or common blocks", &loc);
8859 : }
8860 : }
8861 :
8862 : /* C binding names are not allowed for internal procedures. */
8863 43995 : if (gfc_current_state () == COMP_CONTAINS
8864 26886 : && sym->ns->proc_name->attr.flavor != FL_MODULE)
8865 : allow_binding_name = false;
8866 : else
8867 28657 : allow_binding_name = true;
8868 :
8869 : /* Here, we are just checking if it has the bind(c) attribute, and if
8870 : so, then we need to make sure it's all correct. If it doesn't,
8871 : we still need to continue matching the rest of the subroutine line. */
8872 43995 : gfc_gobble_whitespace ();
8873 43995 : loc = gfc_current_locus;
8874 43995 : is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
8875 43995 : if (is_bind_c == MATCH_ERROR)
8876 : {
8877 : /* There was an attempt at the bind(c), but it was wrong. An
8878 : error message should have been printed w/in the gfc_match_bind_c
8879 : so here we'll just return the MATCH_ERROR. */
8880 : return MATCH_ERROR;
8881 : }
8882 :
8883 43982 : if (is_bind_c == MATCH_YES)
8884 : {
8885 4055 : gfc_formal_arglist *arg;
8886 :
8887 : /* The following is allowed in the Fortran 2008 draft. */
8888 4055 : if (gfc_current_state () == COMP_CONTAINS
8889 1301 : && sym->ns->proc_name->attr.flavor != FL_MODULE
8890 4466 : && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute "
8891 : "at %L may not be specified for an internal "
8892 : "procedure", &gfc_current_locus))
8893 : return MATCH_ERROR;
8894 :
8895 4052 : if (peek_char != '(')
8896 : {
8897 1 : gfc_error ("Missing required parentheses before BIND(C) at %C");
8898 1 : return MATCH_ERROR;
8899 : }
8900 :
8901 : /* F2018 C1550 (R1526) If MODULE appears in the prefix of a module
8902 : subprogram and a binding label is specified, it shall be the
8903 : same as the binding label specified in the corresponding module
8904 : procedure interface body. */
8905 4051 : if (sym->attr.module_procedure && sym->old_symbol
8906 3 : && strcmp (sym->name, sym->old_symbol->name) == 0
8907 3 : && sym->binding_label && sym->old_symbol->binding_label
8908 2 : && strcmp (sym->binding_label, sym->old_symbol->binding_label) != 0)
8909 : {
8910 1 : const char *null = "NULL", *s1, *s2;
8911 1 : s1 = sym->binding_label;
8912 1 : if (!s1) s1 = null;
8913 1 : s2 = sym->old_symbol->binding_label;
8914 1 : if (!s2) s2 = null;
8915 1 : gfc_error ("Mismatch in BIND(C) names (%qs/%qs) at %C", s1, s2);
8916 1 : sym->refs++; /* Needed to avoid an ICE in gfc_release_symbol */
8917 1 : return MATCH_ERROR;
8918 : }
8919 :
8920 : /* Scan the dummy arguments for an alternate return. */
8921 12539 : for (arg = sym->formal; arg; arg = arg->next)
8922 8490 : if (!arg->sym)
8923 : {
8924 1 : gfc_error ("Alternate return dummy argument cannot appear in a "
8925 : "SUBROUTINE with the BIND(C) attribute at %L", &loc);
8926 1 : return MATCH_ERROR;
8927 : }
8928 :
8929 4049 : if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1))
8930 : return MATCH_ERROR;
8931 : }
8932 :
8933 43975 : if (gfc_match_eos () != MATCH_YES)
8934 : {
8935 1 : gfc_syntax_error (ST_SUBROUTINE);
8936 1 : return MATCH_ERROR;
8937 : }
8938 :
8939 43974 : if (!copy_prefix (&sym->attr, &sym->declared_at))
8940 : {
8941 4 : if(!sym->attr.module_procedure)
8942 : return MATCH_ERROR;
8943 : else
8944 3 : gfc_error_check ();
8945 : }
8946 :
8947 : /* Warn if it has the same name as an intrinsic. */
8948 43973 : do_warn_intrinsic_shadow (sym, false);
8949 :
8950 43973 : return MATCH_YES;
8951 : }
8952 :
8953 :
8954 : /* Check that the NAME identifier in a BIND attribute or statement
8955 : is conform to C identifier rules. */
8956 :
8957 : match
8958 1187 : check_bind_name_identifier (char **name)
8959 : {
8960 1187 : char *n = *name, *p;
8961 :
8962 : /* Remove leading spaces. */
8963 1213 : while (*n == ' ')
8964 26 : n++;
8965 :
8966 : /* On an empty string, free memory and set name to NULL. */
8967 1187 : if (*n == '\0')
8968 : {
8969 42 : free (*name);
8970 42 : *name = NULL;
8971 42 : return MATCH_YES;
8972 : }
8973 :
8974 : /* Remove trailing spaces. */
8975 1145 : p = n + strlen(n) - 1;
8976 1161 : while (*p == ' ')
8977 16 : *(p--) = '\0';
8978 :
8979 : /* Insert the identifier into the symbol table. */
8980 1145 : p = xstrdup (n);
8981 1145 : free (*name);
8982 1145 : *name = p;
8983 :
8984 : /* Now check that identifier is valid under C rules. */
8985 1145 : if (ISDIGIT (*p))
8986 : {
8987 2 : gfc_error ("Invalid C identifier in NAME= specifier at %C");
8988 2 : return MATCH_ERROR;
8989 : }
8990 :
8991 12512 : for (; *p; p++)
8992 11372 : if (!(ISALNUM (*p) || *p == '_' || *p == '$'))
8993 : {
8994 3 : gfc_error ("Invalid C identifier in NAME= specifier at %C");
8995 3 : return MATCH_ERROR;
8996 : }
8997 :
8998 : return MATCH_YES;
8999 : }
9000 :
9001 :
9002 : /* Match a BIND(C) specifier, with the optional 'name=' specifier if
9003 : given, and set the binding label in either the given symbol (if not
9004 : NULL), or in the current_ts. The symbol may be NULL because we may
9005 : encounter the BIND(C) before the declaration itself. Return
9006 : MATCH_NO if what we're looking at isn't a BIND(C) specifier,
9007 : MATCH_ERROR if it is a BIND(C) clause but an error was encountered,
9008 : or MATCH_YES if the specifier was correct and the binding label and
9009 : bind(c) fields were set correctly for the given symbol or the
9010 : current_ts. If allow_binding_name is false, no binding name may be
9011 : given. */
9012 :
9013 : match
9014 53138 : gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name)
9015 : {
9016 53138 : char *binding_label = NULL;
9017 53138 : gfc_expr *e = NULL;
9018 :
9019 : /* Initialize the flag that specifies whether we encountered a NAME=
9020 : specifier or not. */
9021 53138 : has_name_equals = 0;
9022 :
9023 : /* This much we have to be able to match, in this order, if
9024 : there is a bind(c) label. */
9025 53138 : if (gfc_match (" bind ( c ") != MATCH_YES)
9026 : return MATCH_NO;
9027 :
9028 : /* Now see if there is a binding label, or if we've reached the
9029 : end of the bind(c) attribute without one. */
9030 7460 : if (gfc_match_char (',') == MATCH_YES)
9031 : {
9032 1194 : if (gfc_match (" name = ") != MATCH_YES)
9033 : {
9034 1 : gfc_error ("Syntax error in NAME= specifier for binding label "
9035 : "at %C");
9036 : /* should give an error message here */
9037 1 : return MATCH_ERROR;
9038 : }
9039 :
9040 1193 : has_name_equals = 1;
9041 :
9042 1193 : if (gfc_match_init_expr (&e) != MATCH_YES)
9043 : {
9044 2 : gfc_free_expr (e);
9045 2 : return MATCH_ERROR;
9046 : }
9047 :
9048 1191 : if (!gfc_simplify_expr(e, 0))
9049 : {
9050 0 : gfc_error ("NAME= specifier at %C should be a constant expression");
9051 0 : gfc_free_expr (e);
9052 0 : return MATCH_ERROR;
9053 : }
9054 :
9055 1191 : if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER
9056 1188 : || e->ts.kind != gfc_default_character_kind || e->rank != 0)
9057 : {
9058 4 : gfc_error ("NAME= specifier at %C should be a scalar of "
9059 : "default character kind");
9060 4 : gfc_free_expr(e);
9061 4 : return MATCH_ERROR;
9062 : }
9063 :
9064 : // Get a C string from the Fortran string constant
9065 2374 : binding_label = gfc_widechar_to_char (e->value.character.string,
9066 1187 : e->value.character.length);
9067 1187 : gfc_free_expr(e);
9068 :
9069 : // Check that it is valid (old gfc_match_name_C)
9070 1187 : if (check_bind_name_identifier (&binding_label) != MATCH_YES)
9071 : return MATCH_ERROR;
9072 : }
9073 :
9074 : /* Get the required right paren. */
9075 7448 : if (gfc_match_char (')') != MATCH_YES)
9076 : {
9077 1 : gfc_error ("Missing closing paren for binding label at %C");
9078 1 : return MATCH_ERROR;
9079 : }
9080 :
9081 7447 : if (has_name_equals && !allow_binding_name)
9082 : {
9083 6 : gfc_error ("No binding name is allowed in BIND(C) at %C");
9084 6 : return MATCH_ERROR;
9085 : }
9086 :
9087 7441 : if (has_name_equals && sym != NULL && sym->attr.dummy)
9088 : {
9089 2 : gfc_error ("For dummy procedure %s, no binding name is "
9090 : "allowed in BIND(C) at %C", sym->name);
9091 2 : return MATCH_ERROR;
9092 : }
9093 :
9094 :
9095 : /* Save the binding label to the symbol. If sym is null, we're
9096 : probably matching the typespec attributes of a declaration and
9097 : haven't gotten the name yet, and therefore, no symbol yet. */
9098 7439 : if (binding_label)
9099 : {
9100 1133 : if (sym != NULL)
9101 1023 : sym->binding_label = binding_label;
9102 : else
9103 110 : curr_binding_label = binding_label;
9104 : }
9105 6306 : else if (allow_binding_name)
9106 : {
9107 : /* No binding label, but if symbol isn't null, we
9108 : can set the label for it here.
9109 : If name="" or allow_binding_name is false, no C binding name is
9110 : created. */
9111 5877 : if (sym != NULL && sym->name != NULL && has_name_equals == 0)
9112 5710 : sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name));
9113 : }
9114 :
9115 7439 : if (has_name_equals && gfc_current_state () == COMP_INTERFACE
9116 741 : && current_interface.type == INTERFACE_ABSTRACT)
9117 : {
9118 1 : gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C");
9119 1 : return MATCH_ERROR;
9120 : }
9121 :
9122 : return MATCH_YES;
9123 : }
9124 :
9125 :
9126 : /* Return nonzero if we're currently compiling a contained procedure. */
9127 :
9128 : static int
9129 64529 : contained_procedure (void)
9130 : {
9131 64529 : gfc_state_data *s = gfc_state_stack;
9132 :
9133 64529 : if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION)
9134 63542 : && s->previous != NULL && s->previous->state == COMP_CONTAINS)
9135 37447 : return 1;
9136 :
9137 : return 0;
9138 : }
9139 :
9140 : /* Set the kind of each enumerator. The kind is selected such that it is
9141 : interoperable with the corresponding C enumeration type, making
9142 : sure that -fshort-enums is honored. */
9143 :
9144 : static void
9145 158 : set_enum_kind(void)
9146 : {
9147 158 : enumerator_history *current_history = NULL;
9148 158 : int kind;
9149 158 : int i;
9150 :
9151 158 : if (max_enum == NULL || enum_history == NULL)
9152 : return;
9153 :
9154 150 : if (!flag_short_enums)
9155 : return;
9156 :
9157 : i = 0;
9158 48 : do
9159 : {
9160 48 : kind = gfc_integer_kinds[i++].kind;
9161 : }
9162 48 : while (kind < gfc_c_int_kind
9163 72 : && gfc_check_integer_range (max_enum->initializer->value.integer,
9164 : kind) != ARITH_OK);
9165 :
9166 24 : current_history = enum_history;
9167 96 : while (current_history != NULL)
9168 : {
9169 72 : current_history->sym->ts.kind = kind;
9170 72 : current_history = current_history->next;
9171 : }
9172 : }
9173 :
9174 :
9175 : /* Match any of the various end-block statements. Returns the type of
9176 : END to the caller. The END INTERFACE, END IF, END DO, END SELECT
9177 : and END BLOCK statements cannot be replaced by a single END statement. */
9178 :
9179 : match
9180 189341 : gfc_match_end (gfc_statement *st)
9181 : {
9182 189341 : char name[GFC_MAX_SYMBOL_LEN + 1];
9183 189341 : gfc_compile_state state;
9184 189341 : locus old_loc;
9185 189341 : const char *block_name;
9186 189341 : const char *target;
9187 189341 : int eos_ok;
9188 189341 : match m;
9189 189341 : gfc_namespace *parent_ns, *ns, *prev_ns;
9190 189341 : gfc_namespace **nsp;
9191 189341 : bool abbreviated_modproc_decl = false;
9192 189341 : bool got_matching_end = false;
9193 :
9194 189341 : old_loc = gfc_current_locus;
9195 189341 : if (gfc_match ("end") != MATCH_YES)
9196 : return MATCH_NO;
9197 :
9198 184195 : state = gfc_current_state ();
9199 101091 : block_name = gfc_current_block () == NULL
9200 184195 : ? NULL : gfc_current_block ()->name;
9201 :
9202 184195 : switch (state)
9203 : {
9204 3268 : case COMP_ASSOCIATE:
9205 3268 : case COMP_BLOCK:
9206 3268 : case COMP_CHANGE_TEAM:
9207 3268 : if (startswith (block_name, "block@"))
9208 : block_name = NULL;
9209 : break;
9210 :
9211 17973 : case COMP_CONTAINS:
9212 17973 : case COMP_DERIVED_CONTAINS:
9213 17973 : case COMP_OMP_BEGIN_METADIRECTIVE:
9214 17973 : state = gfc_state_stack->previous->state;
9215 16407 : block_name = gfc_state_stack->previous->sym == NULL
9216 17973 : ? NULL : gfc_state_stack->previous->sym->name;
9217 17973 : abbreviated_modproc_decl = gfc_state_stack->previous->sym
9218 17973 : && gfc_state_stack->previous->sym->abr_modproc_decl;
9219 : break;
9220 :
9221 : case COMP_OMP_METADIRECTIVE:
9222 : {
9223 : /* Metadirectives can be nested, so we need to drill down to the
9224 : first state that is not COMP_OMP_METADIRECTIVE. */
9225 : gfc_state_data *state_data = gfc_state_stack;
9226 :
9227 93 : do
9228 : {
9229 93 : state_data = state_data->previous;
9230 93 : state = state_data->state;
9231 81 : block_name = (state_data->sym == NULL
9232 93 : ? NULL : state_data->sym->name);
9233 186 : abbreviated_modproc_decl = (state_data->sym
9234 93 : && state_data->sym->abr_modproc_decl);
9235 : }
9236 93 : while (state == COMP_OMP_METADIRECTIVE);
9237 :
9238 87 : if (block_name && startswith (block_name, "block@"))
9239 : block_name = NULL;
9240 : }
9241 : break;
9242 :
9243 : default:
9244 : break;
9245 : }
9246 :
9247 87 : if (!abbreviated_modproc_decl)
9248 184194 : abbreviated_modproc_decl = gfc_current_block ()
9249 184194 : && gfc_current_block ()->abr_modproc_decl;
9250 :
9251 184195 : switch (state)
9252 : {
9253 28428 : case COMP_NONE:
9254 28428 : case COMP_PROGRAM:
9255 28428 : *st = ST_END_PROGRAM;
9256 28428 : target = " program";
9257 28428 : eos_ok = 1;
9258 28428 : break;
9259 :
9260 44166 : case COMP_SUBROUTINE:
9261 44166 : *st = ST_END_SUBROUTINE;
9262 44166 : if (!abbreviated_modproc_decl)
9263 : target = " subroutine";
9264 : else
9265 148 : target = " procedure";
9266 44166 : eos_ok = !contained_procedure ();
9267 44166 : break;
9268 :
9269 20363 : case COMP_FUNCTION:
9270 20363 : *st = ST_END_FUNCTION;
9271 20363 : if (!abbreviated_modproc_decl)
9272 : target = " function";
9273 : else
9274 117 : target = " procedure";
9275 20363 : eos_ok = !contained_procedure ();
9276 20363 : break;
9277 :
9278 87 : case COMP_BLOCK_DATA:
9279 87 : *st = ST_END_BLOCK_DATA;
9280 87 : target = " block data";
9281 87 : eos_ok = 1;
9282 87 : break;
9283 :
9284 10118 : case COMP_MODULE:
9285 10118 : *st = ST_END_MODULE;
9286 10118 : target = " module";
9287 10118 : eos_ok = 1;
9288 10118 : break;
9289 :
9290 268 : case COMP_SUBMODULE:
9291 268 : *st = ST_END_SUBMODULE;
9292 268 : target = " submodule";
9293 268 : eos_ok = 1;
9294 268 : break;
9295 :
9296 11372 : case COMP_INTERFACE:
9297 11372 : *st = ST_END_INTERFACE;
9298 11372 : target = " interface";
9299 11372 : eos_ok = 0;
9300 11372 : break;
9301 :
9302 257 : case COMP_MAP:
9303 257 : *st = ST_END_MAP;
9304 257 : target = " map";
9305 257 : eos_ok = 0;
9306 257 : break;
9307 :
9308 132 : case COMP_UNION:
9309 132 : *st = ST_END_UNION;
9310 132 : target = " union";
9311 132 : eos_ok = 0;
9312 132 : break;
9313 :
9314 313 : case COMP_STRUCTURE:
9315 313 : *st = ST_END_STRUCTURE;
9316 313 : target = " structure";
9317 313 : eos_ok = 0;
9318 313 : break;
9319 :
9320 13451 : case COMP_DERIVED:
9321 13451 : case COMP_DERIVED_CONTAINS:
9322 13451 : *st = ST_END_TYPE;
9323 13451 : target = " type";
9324 13451 : eos_ok = 0;
9325 13451 : break;
9326 :
9327 1663 : case COMP_ASSOCIATE:
9328 1663 : *st = ST_END_ASSOCIATE;
9329 1663 : target = " associate";
9330 1663 : eos_ok = 0;
9331 1663 : break;
9332 :
9333 1527 : case COMP_BLOCK:
9334 1527 : case COMP_OMP_STRICTLY_STRUCTURED_BLOCK:
9335 1527 : *st = ST_END_BLOCK;
9336 1527 : target = " block";
9337 1527 : eos_ok = 0;
9338 1527 : break;
9339 :
9340 15025 : case COMP_IF:
9341 15025 : *st = ST_ENDIF;
9342 15025 : target = " if";
9343 15025 : eos_ok = 0;
9344 15025 : break;
9345 :
9346 31088 : case COMP_DO:
9347 31088 : case COMP_DO_CONCURRENT:
9348 31088 : *st = ST_ENDDO;
9349 31088 : target = " do";
9350 31088 : eos_ok = 0;
9351 31088 : break;
9352 :
9353 54 : case COMP_CRITICAL:
9354 54 : *st = ST_END_CRITICAL;
9355 54 : target = " critical";
9356 54 : eos_ok = 0;
9357 54 : break;
9358 :
9359 4726 : case COMP_SELECT:
9360 4726 : case COMP_SELECT_TYPE:
9361 4726 : case COMP_SELECT_RANK:
9362 4726 : *st = ST_END_SELECT;
9363 4726 : target = " select";
9364 4726 : eos_ok = 0;
9365 4726 : break;
9366 :
9367 509 : case COMP_FORALL:
9368 509 : *st = ST_END_FORALL;
9369 509 : target = " forall";
9370 509 : eos_ok = 0;
9371 509 : break;
9372 :
9373 373 : case COMP_WHERE:
9374 373 : *st = ST_END_WHERE;
9375 373 : target = " where";
9376 373 : eos_ok = 0;
9377 373 : break;
9378 :
9379 158 : case COMP_ENUM:
9380 158 : *st = ST_END_ENUM;
9381 158 : target = " enum";
9382 158 : eos_ok = 0;
9383 158 : last_initializer = NULL;
9384 158 : set_enum_kind ();
9385 158 : gfc_free_enum_history ();
9386 158 : break;
9387 :
9388 0 : case COMP_OMP_BEGIN_METADIRECTIVE:
9389 0 : *st = ST_OMP_END_METADIRECTIVE;
9390 0 : target = " metadirective";
9391 0 : eos_ok = 0;
9392 0 : break;
9393 :
9394 108 : case COMP_CHANGE_TEAM:
9395 108 : *st = ST_END_TEAM;
9396 108 : target = " team";
9397 108 : eos_ok = 0;
9398 108 : break;
9399 :
9400 9 : default:
9401 9 : gfc_error ("Unexpected END statement at %C");
9402 9 : goto cleanup;
9403 : }
9404 :
9405 184186 : old_loc = gfc_current_locus;
9406 184186 : if (gfc_match_eos () == MATCH_YES)
9407 : {
9408 20894 : if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION))
9409 : {
9410 8253 : if (!gfc_notify_std (GFC_STD_F2008, "END statement "
9411 : "instead of %s statement at %L",
9412 : abbreviated_modproc_decl ? "END PROCEDURE"
9413 4114 : : gfc_ascii_statement(*st), &old_loc))
9414 4 : goto cleanup;
9415 : }
9416 9 : else if (!eos_ok)
9417 : {
9418 : /* We would have required END [something]. */
9419 9 : gfc_error ("%s statement expected at %L",
9420 : gfc_ascii_statement (*st), &old_loc);
9421 9 : goto cleanup;
9422 : }
9423 :
9424 : return MATCH_YES;
9425 : }
9426 :
9427 : /* Verify that we've got the sort of end-block that we're expecting. */
9428 163292 : if (gfc_match (target) != MATCH_YES)
9429 : {
9430 331 : gfc_error ("Expecting %s statement at %L", abbreviated_modproc_decl
9431 165 : ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc);
9432 166 : goto cleanup;
9433 : }
9434 : else
9435 163126 : got_matching_end = true;
9436 :
9437 163126 : if (*st == ST_END_TEAM && gfc_match_end_team () == MATCH_ERROR)
9438 : /* Emit errors of stat and errmsg parsing now to finish the block and
9439 : continue analysis of compilation unit. */
9440 2 : gfc_error_check ();
9441 :
9442 163126 : old_loc = gfc_current_locus;
9443 : /* If we're at the end, make sure a block name wasn't required. */
9444 163126 : if (gfc_match_eos () == MATCH_YES)
9445 : {
9446 107867 : if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT
9447 : && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK
9448 : && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL
9449 : && *st != ST_END_TEAM)
9450 : return MATCH_YES;
9451 :
9452 54574 : if (!block_name)
9453 : return MATCH_YES;
9454 :
9455 8 : gfc_error ("Expected block name of %qs in %s statement at %L",
9456 : block_name, gfc_ascii_statement (*st), &old_loc);
9457 :
9458 8 : return MATCH_ERROR;
9459 : }
9460 :
9461 : /* END INTERFACE has a special handler for its several possible endings. */
9462 55259 : if (*st == ST_END_INTERFACE)
9463 696 : return gfc_match_end_interface ();
9464 :
9465 : /* We haven't hit the end of statement, so what is left must be an
9466 : end-name. */
9467 54563 : m = gfc_match_space ();
9468 54563 : if (m == MATCH_YES)
9469 54563 : m = gfc_match_name (name);
9470 :
9471 54563 : if (m == MATCH_NO)
9472 0 : gfc_error ("Expected terminating name at %C");
9473 54563 : if (m != MATCH_YES)
9474 0 : goto cleanup;
9475 :
9476 54563 : if (block_name == NULL)
9477 15 : goto syntax;
9478 :
9479 : /* We have to pick out the declared submodule name from the composite
9480 : required by F2008:11.2.3 para 2, which ends in the declared name. */
9481 54548 : if (state == COMP_SUBMODULE)
9482 137 : block_name = strchr (block_name, '.') + 1;
9483 :
9484 54548 : if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0)
9485 : {
9486 8 : gfc_error ("Expected label %qs for %s statement at %C", block_name,
9487 : gfc_ascii_statement (*st));
9488 8 : goto cleanup;
9489 : }
9490 : /* Procedure pointer as function result. */
9491 54540 : else if (strcmp (block_name, "ppr@") == 0
9492 21 : && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0)
9493 : {
9494 0 : gfc_error ("Expected label %qs for %s statement at %C",
9495 0 : gfc_current_block ()->ns->proc_name->name,
9496 : gfc_ascii_statement (*st));
9497 0 : goto cleanup;
9498 : }
9499 :
9500 54540 : if (gfc_match_eos () == MATCH_YES)
9501 : return MATCH_YES;
9502 :
9503 0 : syntax:
9504 15 : gfc_syntax_error (*st);
9505 :
9506 211 : cleanup:
9507 211 : gfc_current_locus = old_loc;
9508 :
9509 : /* If we are missing an END BLOCK, we created a half-ready namespace.
9510 : Remove it from the parent namespace's sibling list. */
9511 :
9512 211 : if (state == COMP_BLOCK && !got_matching_end)
9513 : {
9514 7 : parent_ns = gfc_current_ns->parent;
9515 :
9516 7 : nsp = &(gfc_state_stack->previous->tail->ext.block.ns);
9517 :
9518 7 : prev_ns = NULL;
9519 7 : ns = *nsp;
9520 14 : while (ns)
9521 : {
9522 7 : if (ns == gfc_current_ns)
9523 : {
9524 7 : if (prev_ns == NULL)
9525 7 : *nsp = NULL;
9526 : else
9527 0 : prev_ns->sibling = ns->sibling;
9528 : }
9529 7 : prev_ns = ns;
9530 7 : ns = ns->sibling;
9531 : }
9532 :
9533 : /* The namespace can still be referenced by parser state and code nodes;
9534 : let normal block unwinding/freeing own its lifetime. */
9535 7 : gfc_current_ns = parent_ns;
9536 7 : gfc_state_stack = gfc_state_stack->previous;
9537 7 : state = gfc_current_state ();
9538 : }
9539 :
9540 : return MATCH_ERROR;
9541 : }
9542 :
9543 :
9544 :
9545 : /***************** Attribute declaration statements ****************/
9546 :
9547 : /* Set the attribute of a single variable. */
9548 :
9549 : static match
9550 10427 : attr_decl1 (void)
9551 : {
9552 10427 : char name[GFC_MAX_SYMBOL_LEN + 1];
9553 10427 : gfc_array_spec *as;
9554 :
9555 : /* Workaround -Wmaybe-uninitialized false positive during
9556 : profiledbootstrap by initializing them. */
9557 10427 : gfc_symbol *sym = NULL;
9558 10427 : locus var_locus;
9559 10427 : match m;
9560 :
9561 10427 : as = NULL;
9562 :
9563 10427 : m = gfc_match_name (name);
9564 10427 : if (m != MATCH_YES)
9565 0 : goto cleanup;
9566 :
9567 10427 : if (find_special (name, &sym, false))
9568 : return MATCH_ERROR;
9569 :
9570 10427 : if (!check_function_name (name))
9571 : {
9572 7 : m = MATCH_ERROR;
9573 7 : goto cleanup;
9574 : }
9575 :
9576 10420 : var_locus = gfc_current_locus;
9577 :
9578 : /* Deal with possible array specification for certain attributes. */
9579 10420 : if (current_attr.dimension
9580 8841 : || current_attr.codimension
9581 8819 : || current_attr.allocatable
9582 8395 : || current_attr.pointer
9583 7672 : || current_attr.target)
9584 : {
9585 6174 : m = gfc_match_array_spec (&as, !current_attr.codimension,
9586 : !current_attr.dimension
9587 1395 : && !current_attr.pointer
9588 : && !current_attr.target);
9589 2974 : if (m == MATCH_ERROR)
9590 2 : goto cleanup;
9591 :
9592 2972 : if (current_attr.dimension && m == MATCH_NO)
9593 : {
9594 0 : gfc_error ("Missing array specification at %L in DIMENSION "
9595 : "statement", &var_locus);
9596 0 : m = MATCH_ERROR;
9597 0 : goto cleanup;
9598 : }
9599 :
9600 2972 : if (current_attr.dimension && sym->value)
9601 : {
9602 1 : gfc_error ("Dimensions specified for %s at %L after its "
9603 : "initialization", sym->name, &var_locus);
9604 1 : m = MATCH_ERROR;
9605 1 : goto cleanup;
9606 : }
9607 :
9608 2971 : if (current_attr.codimension && m == MATCH_NO)
9609 : {
9610 0 : gfc_error ("Missing array specification at %L in CODIMENSION "
9611 : "statement", &var_locus);
9612 0 : m = MATCH_ERROR;
9613 0 : goto cleanup;
9614 : }
9615 :
9616 2971 : if ((current_attr.allocatable || current_attr.pointer)
9617 1147 : && (m == MATCH_YES) && (as->type != AS_DEFERRED))
9618 : {
9619 0 : gfc_error ("Array specification must be deferred at %L", &var_locus);
9620 0 : m = MATCH_ERROR;
9621 0 : goto cleanup;
9622 : }
9623 : }
9624 :
9625 10417 : if (sym->ts.type == BT_CLASS
9626 200 : && sym->ts.u.derived
9627 200 : && sym->ts.u.derived->attr.is_class)
9628 : {
9629 177 : sym->attr.pointer = CLASS_DATA(sym)->attr.class_pointer;
9630 177 : sym->attr.allocatable = CLASS_DATA(sym)->attr.allocatable;
9631 177 : sym->attr.dimension = CLASS_DATA(sym)->attr.dimension;
9632 177 : sym->attr.codimension = CLASS_DATA(sym)->attr.codimension;
9633 177 : if (CLASS_DATA (sym)->as)
9634 123 : sym->as = gfc_copy_array_spec (CLASS_DATA (sym)->as);
9635 : }
9636 8840 : if (current_attr.dimension == 0 && current_attr.codimension == 0
9637 19236 : && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus))
9638 : {
9639 22 : m = MATCH_ERROR;
9640 22 : goto cleanup;
9641 : }
9642 10395 : if (!gfc_set_array_spec (sym, as, &var_locus))
9643 : {
9644 17 : m = MATCH_ERROR;
9645 17 : goto cleanup;
9646 : }
9647 :
9648 10378 : if (sym->attr.cray_pointee && sym->as != NULL)
9649 : {
9650 : /* Fix the array spec. */
9651 2 : m = gfc_mod_pointee_as (sym->as);
9652 2 : if (m == MATCH_ERROR)
9653 0 : goto cleanup;
9654 : }
9655 :
9656 10378 : if (!gfc_add_attribute (&sym->attr, &var_locus))
9657 : {
9658 0 : m = MATCH_ERROR;
9659 0 : goto cleanup;
9660 : }
9661 :
9662 5741 : if ((current_attr.external || current_attr.intrinsic)
9663 6289 : && sym->attr.flavor != FL_PROCEDURE
9664 16635 : && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL))
9665 : {
9666 0 : m = MATCH_ERROR;
9667 0 : goto cleanup;
9668 : }
9669 :
9670 10378 : if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class
9671 169 : && !as && !current_attr.pointer && !current_attr.allocatable
9672 136 : && !current_attr.external)
9673 : {
9674 136 : sym->attr.pointer = 0;
9675 136 : sym->attr.allocatable = 0;
9676 136 : sym->attr.dimension = 0;
9677 136 : sym->attr.codimension = 0;
9678 136 : gfc_free_array_spec (sym->as);
9679 136 : sym->as = NULL;
9680 : }
9681 10242 : else if (sym->ts.type == BT_CLASS
9682 10242 : && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as))
9683 : {
9684 0 : m = MATCH_ERROR;
9685 0 : goto cleanup;
9686 : }
9687 :
9688 10378 : add_hidden_procptr_result (sym);
9689 :
9690 10378 : return MATCH_YES;
9691 :
9692 49 : cleanup:
9693 49 : gfc_free_array_spec (as);
9694 49 : return m;
9695 : }
9696 :
9697 :
9698 : /* Generic attribute declaration subroutine. Used for attributes that
9699 : just have a list of names. */
9700 :
9701 : static match
9702 6712 : attr_decl (void)
9703 : {
9704 6712 : match m;
9705 :
9706 : /* Gobble the optional double colon, by simply ignoring the result
9707 : of gfc_match(). */
9708 6712 : gfc_match (" ::");
9709 :
9710 10427 : for (;;)
9711 : {
9712 10427 : m = attr_decl1 ();
9713 10427 : if (m != MATCH_YES)
9714 : break;
9715 :
9716 10378 : if (gfc_match_eos () == MATCH_YES)
9717 : {
9718 : m = MATCH_YES;
9719 : break;
9720 : }
9721 :
9722 3715 : if (gfc_match_char (',') != MATCH_YES)
9723 : {
9724 0 : gfc_error ("Unexpected character in variable list at %C");
9725 0 : m = MATCH_ERROR;
9726 0 : break;
9727 : }
9728 : }
9729 :
9730 6712 : return m;
9731 : }
9732 :
9733 :
9734 : /* This routine matches Cray Pointer declarations of the form:
9735 : pointer ( <pointer>, <pointee> )
9736 : or
9737 : pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ...
9738 : The pointer, if already declared, should be an integer. Otherwise, we
9739 : set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may
9740 : be either a scalar, or an array declaration. No space is allocated for
9741 : the pointee. For the statement
9742 : pointer (ipt, ar(10))
9743 : any subsequent uses of ar will be translated (in C-notation) as
9744 : ar(i) => ((<type> *) ipt)(i)
9745 : After gimplification, pointee variable will disappear in the code. */
9746 :
9747 : static match
9748 334 : cray_pointer_decl (void)
9749 : {
9750 334 : match m;
9751 334 : gfc_array_spec *as = NULL;
9752 334 : gfc_symbol *cptr; /* Pointer symbol. */
9753 334 : gfc_symbol *cpte; /* Pointee symbol. */
9754 334 : locus var_locus;
9755 334 : bool done = false;
9756 :
9757 334 : while (!done)
9758 : {
9759 347 : if (gfc_match_char ('(') != MATCH_YES)
9760 : {
9761 1 : gfc_error ("Expected %<(%> at %C");
9762 1 : return MATCH_ERROR;
9763 : }
9764 :
9765 : /* Match pointer. */
9766 346 : var_locus = gfc_current_locus;
9767 346 : gfc_clear_attr (¤t_attr);
9768 346 : gfc_add_cray_pointer (¤t_attr, &var_locus);
9769 346 : current_ts.type = BT_INTEGER;
9770 346 : current_ts.kind = gfc_index_integer_kind;
9771 :
9772 346 : m = gfc_match_symbol (&cptr, 0);
9773 346 : if (m != MATCH_YES)
9774 : {
9775 2 : gfc_error ("Expected variable name at %C");
9776 2 : return m;
9777 : }
9778 :
9779 344 : if (!gfc_add_cray_pointer (&cptr->attr, &var_locus))
9780 : return MATCH_ERROR;
9781 :
9782 341 : gfc_set_sym_referenced (cptr);
9783 :
9784 341 : if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */
9785 : {
9786 327 : cptr->ts.type = BT_INTEGER;
9787 327 : cptr->ts.kind = gfc_index_integer_kind;
9788 : }
9789 14 : else if (cptr->ts.type != BT_INTEGER)
9790 : {
9791 1 : gfc_error ("Cray pointer at %C must be an integer");
9792 1 : return MATCH_ERROR;
9793 : }
9794 13 : else if (cptr->ts.kind < gfc_index_integer_kind)
9795 0 : gfc_warning (0, "Cray pointer at %C has %d bytes of precision;"
9796 : " memory addresses require %d bytes",
9797 : cptr->ts.kind, gfc_index_integer_kind);
9798 :
9799 340 : if (gfc_match_char (',') != MATCH_YES)
9800 : {
9801 2 : gfc_error ("Expected \",\" at %C");
9802 2 : return MATCH_ERROR;
9803 : }
9804 :
9805 : /* Match Pointee. */
9806 338 : var_locus = gfc_current_locus;
9807 338 : gfc_clear_attr (¤t_attr);
9808 338 : gfc_add_cray_pointee (¤t_attr, &var_locus);
9809 338 : current_ts.type = BT_UNKNOWN;
9810 338 : current_ts.kind = 0;
9811 :
9812 338 : m = gfc_match_symbol (&cpte, 0);
9813 338 : if (m != MATCH_YES)
9814 : {
9815 2 : gfc_error ("Expected variable name at %C");
9816 2 : return m;
9817 : }
9818 :
9819 : /* Check for an optional array spec. */
9820 336 : m = gfc_match_array_spec (&as, true, false);
9821 336 : if (m == MATCH_ERROR)
9822 : {
9823 0 : gfc_free_array_spec (as);
9824 0 : return m;
9825 : }
9826 336 : else if (m == MATCH_NO)
9827 : {
9828 226 : gfc_free_array_spec (as);
9829 226 : as = NULL;
9830 : }
9831 :
9832 336 : if (!gfc_add_cray_pointee (&cpte->attr, &var_locus))
9833 : return MATCH_ERROR;
9834 :
9835 329 : gfc_set_sym_referenced (cpte);
9836 :
9837 329 : if (cpte->as == NULL)
9838 : {
9839 247 : if (!gfc_set_array_spec (cpte, as, &var_locus))
9840 0 : gfc_internal_error ("Cannot set Cray pointee array spec.");
9841 : }
9842 82 : else if (as != NULL)
9843 : {
9844 1 : gfc_error ("Duplicate array spec for Cray pointee at %C");
9845 1 : gfc_free_array_spec (as);
9846 1 : return MATCH_ERROR;
9847 : }
9848 :
9849 328 : as = NULL;
9850 :
9851 328 : if (cpte->as != NULL)
9852 : {
9853 : /* Fix array spec. */
9854 190 : m = gfc_mod_pointee_as (cpte->as);
9855 190 : if (m == MATCH_ERROR)
9856 : return m;
9857 : }
9858 :
9859 : /* Point the Pointee at the Pointer. */
9860 328 : cpte->cp_pointer = cptr;
9861 :
9862 328 : if (gfc_match_char (')') != MATCH_YES)
9863 : {
9864 2 : gfc_error ("Expected \")\" at %C");
9865 2 : return MATCH_ERROR;
9866 : }
9867 326 : m = gfc_match_char (',');
9868 326 : if (m != MATCH_YES)
9869 : done = true; /* Stop searching for more declarations. */
9870 :
9871 : }
9872 :
9873 313 : if (m == MATCH_ERROR /* Failed when trying to find ',' above. */
9874 313 : || gfc_match_eos () != MATCH_YES)
9875 : {
9876 0 : gfc_error ("Expected %<,%> or end of statement at %C");
9877 0 : return MATCH_ERROR;
9878 : }
9879 : return MATCH_YES;
9880 : }
9881 :
9882 :
9883 : match
9884 3215 : gfc_match_external (void)
9885 : {
9886 :
9887 3215 : gfc_clear_attr (¤t_attr);
9888 3215 : current_attr.external = 1;
9889 :
9890 3215 : return attr_decl ();
9891 : }
9892 :
9893 :
9894 : match
9895 208 : gfc_match_intent (void)
9896 : {
9897 208 : sym_intent intent;
9898 :
9899 : /* This is not allowed within a BLOCK construct! */
9900 208 : if (gfc_current_state () == COMP_BLOCK)
9901 : {
9902 2 : gfc_error ("INTENT is not allowed inside of BLOCK at %C");
9903 2 : return MATCH_ERROR;
9904 : }
9905 :
9906 206 : intent = match_intent_spec ();
9907 206 : if (intent == INTENT_UNKNOWN)
9908 : return MATCH_ERROR;
9909 :
9910 206 : gfc_clear_attr (¤t_attr);
9911 206 : current_attr.intent = intent;
9912 :
9913 206 : return attr_decl ();
9914 : }
9915 :
9916 :
9917 : match
9918 1482 : gfc_match_intrinsic (void)
9919 : {
9920 :
9921 1482 : gfc_clear_attr (¤t_attr);
9922 1482 : current_attr.intrinsic = 1;
9923 :
9924 1482 : return attr_decl ();
9925 : }
9926 :
9927 :
9928 : match
9929 220 : gfc_match_optional (void)
9930 : {
9931 : /* This is not allowed within a BLOCK construct! */
9932 220 : if (gfc_current_state () == COMP_BLOCK)
9933 : {
9934 2 : gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C");
9935 2 : return MATCH_ERROR;
9936 : }
9937 :
9938 218 : gfc_clear_attr (¤t_attr);
9939 218 : current_attr.optional = 1;
9940 :
9941 218 : return attr_decl ();
9942 : }
9943 :
9944 :
9945 : match
9946 915 : gfc_match_pointer (void)
9947 : {
9948 915 : gfc_gobble_whitespace ();
9949 915 : if (gfc_peek_ascii_char () == '(')
9950 : {
9951 335 : if (!flag_cray_pointer)
9952 : {
9953 1 : gfc_error ("Cray pointer declaration at %C requires "
9954 : "%<-fcray-pointer%> flag");
9955 1 : return MATCH_ERROR;
9956 : }
9957 334 : return cray_pointer_decl ();
9958 : }
9959 : else
9960 : {
9961 580 : gfc_clear_attr (¤t_attr);
9962 580 : current_attr.pointer = 1;
9963 :
9964 580 : return attr_decl ();
9965 : }
9966 : }
9967 :
9968 :
9969 : match
9970 162 : gfc_match_allocatable (void)
9971 : {
9972 162 : gfc_clear_attr (¤t_attr);
9973 162 : current_attr.allocatable = 1;
9974 :
9975 162 : return attr_decl ();
9976 : }
9977 :
9978 :
9979 : match
9980 23 : gfc_match_codimension (void)
9981 : {
9982 23 : gfc_clear_attr (¤t_attr);
9983 23 : current_attr.codimension = 1;
9984 :
9985 23 : return attr_decl ();
9986 : }
9987 :
9988 :
9989 : match
9990 80 : gfc_match_contiguous (void)
9991 : {
9992 80 : if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C"))
9993 : return MATCH_ERROR;
9994 :
9995 79 : gfc_clear_attr (¤t_attr);
9996 79 : current_attr.contiguous = 1;
9997 :
9998 79 : return attr_decl ();
9999 : }
10000 :
10001 :
10002 : match
10003 648 : gfc_match_dimension (void)
10004 : {
10005 648 : gfc_clear_attr (¤t_attr);
10006 648 : current_attr.dimension = 1;
10007 :
10008 648 : return attr_decl ();
10009 : }
10010 :
10011 :
10012 : match
10013 99 : gfc_match_target (void)
10014 : {
10015 99 : gfc_clear_attr (¤t_attr);
10016 99 : current_attr.target = 1;
10017 :
10018 99 : return attr_decl ();
10019 : }
10020 :
10021 :
10022 : /* Match the list of entities being specified in a PUBLIC or PRIVATE
10023 : statement. */
10024 :
10025 : static match
10026 1766 : access_attr_decl (gfc_statement st)
10027 : {
10028 1766 : char name[GFC_MAX_SYMBOL_LEN + 1];
10029 1766 : interface_type type;
10030 1766 : gfc_user_op *uop;
10031 1766 : gfc_symbol *sym, *dt_sym;
10032 1766 : gfc_intrinsic_op op;
10033 1766 : match m;
10034 1766 : gfc_access access = (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE;
10035 :
10036 1766 : if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
10037 0 : goto done;
10038 :
10039 2916 : for (;;)
10040 : {
10041 2916 : m = gfc_match_generic_spec (&type, name, &op);
10042 2916 : if (m == MATCH_NO)
10043 0 : goto syntax;
10044 2916 : if (m == MATCH_ERROR)
10045 0 : goto done;
10046 :
10047 2916 : switch (type)
10048 : {
10049 0 : case INTERFACE_NAMELESS:
10050 0 : case INTERFACE_ABSTRACT:
10051 0 : goto syntax;
10052 :
10053 2839 : case INTERFACE_GENERIC:
10054 2839 : case INTERFACE_DTIO:
10055 :
10056 2839 : if (gfc_get_symbol (name, NULL, &sym))
10057 0 : goto done;
10058 :
10059 2839 : if (type == INTERFACE_DTIO
10060 26 : && gfc_current_ns->proc_name
10061 26 : && gfc_current_ns->proc_name->attr.flavor == FL_MODULE
10062 26 : && sym->attr.flavor == FL_UNKNOWN)
10063 2 : sym->attr.flavor = FL_PROCEDURE;
10064 :
10065 2839 : if (!gfc_add_access (&sym->attr, access, sym->name, NULL))
10066 4 : goto done;
10067 :
10068 330 : if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym))
10069 2892 : && !gfc_add_access (&dt_sym->attr, access, sym->name, NULL))
10070 0 : goto done;
10071 :
10072 : break;
10073 :
10074 72 : case INTERFACE_INTRINSIC_OP:
10075 72 : if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN)
10076 : {
10077 72 : gfc_intrinsic_op other_op;
10078 :
10079 72 : gfc_current_ns->operator_access[op] = access;
10080 :
10081 : /* Handle the case if there is another op with the same
10082 : function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */
10083 72 : other_op = gfc_equivalent_op (op);
10084 :
10085 72 : if (other_op != INTRINSIC_NONE)
10086 21 : gfc_current_ns->operator_access[other_op] = access;
10087 : }
10088 : else
10089 : {
10090 0 : gfc_error ("Access specification of the %s operator at %C has "
10091 : "already been specified", gfc_op2string (op));
10092 0 : goto done;
10093 : }
10094 :
10095 : break;
10096 :
10097 5 : case INTERFACE_USER_OP:
10098 5 : uop = gfc_get_uop (name);
10099 :
10100 5 : if (uop->access == ACCESS_UNKNOWN)
10101 : {
10102 4 : uop->access = access;
10103 : }
10104 : else
10105 : {
10106 1 : gfc_error ("Access specification of the .%s. operator at %C "
10107 : "has already been specified", uop->name);
10108 1 : goto done;
10109 : }
10110 :
10111 4 : break;
10112 : }
10113 :
10114 2911 : if (gfc_match_char (',') == MATCH_NO)
10115 : break;
10116 : }
10117 :
10118 1761 : if (gfc_match_eos () != MATCH_YES)
10119 0 : goto syntax;
10120 : return MATCH_YES;
10121 :
10122 0 : syntax:
10123 0 : gfc_syntax_error (st);
10124 :
10125 1766 : done:
10126 : return MATCH_ERROR;
10127 : }
10128 :
10129 :
10130 : match
10131 23 : gfc_match_protected (void)
10132 : {
10133 23 : gfc_symbol *sym;
10134 23 : match m;
10135 23 : char c;
10136 :
10137 : /* PROTECTED has already been seen, but must be followed by whitespace
10138 : or ::. */
10139 23 : c = gfc_peek_ascii_char ();
10140 23 : if (!gfc_is_whitespace (c) && c != ':')
10141 : return MATCH_NO;
10142 :
10143 22 : if (!gfc_current_ns->proc_name
10144 20 : || gfc_current_ns->proc_name->attr.flavor != FL_MODULE)
10145 : {
10146 3 : gfc_error ("PROTECTED at %C only allowed in specification "
10147 : "part of a module");
10148 3 : return MATCH_ERROR;
10149 :
10150 : }
10151 :
10152 19 : gfc_match (" ::");
10153 :
10154 19 : if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C"))
10155 : return MATCH_ERROR;
10156 :
10157 : /* PROTECTED has an entity-list. */
10158 18 : if (gfc_match_eos () == MATCH_YES)
10159 0 : goto syntax;
10160 :
10161 26 : for(;;)
10162 : {
10163 26 : m = gfc_match_symbol (&sym, 0);
10164 26 : switch (m)
10165 : {
10166 26 : case MATCH_YES:
10167 26 : if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus))
10168 : return MATCH_ERROR;
10169 25 : goto next_item;
10170 :
10171 : case MATCH_NO:
10172 : break;
10173 :
10174 : case MATCH_ERROR:
10175 : return MATCH_ERROR;
10176 : }
10177 :
10178 25 : next_item:
10179 25 : if (gfc_match_eos () == MATCH_YES)
10180 : break;
10181 8 : if (gfc_match_char (',') != MATCH_YES)
10182 0 : goto syntax;
10183 : }
10184 :
10185 : return MATCH_YES;
10186 :
10187 0 : syntax:
10188 0 : gfc_error ("Syntax error in PROTECTED statement at %C");
10189 0 : return MATCH_ERROR;
10190 : }
10191 :
10192 :
10193 : /* The PRIVATE statement is a bit weird in that it can be an attribute
10194 : declaration, but also works as a standalone statement inside of a
10195 : type declaration or a module. */
10196 :
10197 : match
10198 29567 : gfc_match_private (gfc_statement *st)
10199 : {
10200 29567 : gfc_state_data *prev;
10201 :
10202 29567 : if (gfc_match ("private") != MATCH_YES)
10203 : return MATCH_NO;
10204 :
10205 : /* Try matching PRIVATE without an access-list. */
10206 1635 : if (gfc_match_eos () == MATCH_YES)
10207 : {
10208 1348 : prev = gfc_state_stack->previous;
10209 1348 : if (gfc_current_state () != COMP_MODULE
10210 367 : && !(gfc_current_state () == COMP_DERIVED
10211 334 : && prev && prev->state == COMP_MODULE)
10212 34 : && !(gfc_current_state () == COMP_DERIVED_CONTAINS
10213 32 : && prev->previous && prev->previous->state == COMP_MODULE))
10214 : {
10215 2 : gfc_error ("PRIVATE statement at %C is only allowed in the "
10216 : "specification part of a module");
10217 2 : return MATCH_ERROR;
10218 : }
10219 :
10220 1346 : *st = ST_PRIVATE;
10221 1346 : return MATCH_YES;
10222 : }
10223 :
10224 : /* At this point in free-form source code, PRIVATE must be followed
10225 : by whitespace or ::. */
10226 287 : if (gfc_current_form == FORM_FREE)
10227 : {
10228 285 : char c = gfc_peek_ascii_char ();
10229 285 : if (!gfc_is_whitespace (c) && c != ':')
10230 : return MATCH_NO;
10231 : }
10232 :
10233 286 : prev = gfc_state_stack->previous;
10234 286 : if (gfc_current_state () != COMP_MODULE
10235 1 : && !(gfc_current_state () == COMP_DERIVED
10236 0 : && prev && prev->state == COMP_MODULE)
10237 1 : && !(gfc_current_state () == COMP_DERIVED_CONTAINS
10238 0 : && prev->previous && prev->previous->state == COMP_MODULE))
10239 : {
10240 1 : gfc_error ("PRIVATE statement at %C is only allowed in the "
10241 : "specification part of a module");
10242 1 : return MATCH_ERROR;
10243 : }
10244 :
10245 285 : *st = ST_ATTR_DECL;
10246 285 : return access_attr_decl (ST_PRIVATE);
10247 : }
10248 :
10249 :
10250 : match
10251 1880 : gfc_match_public (gfc_statement *st)
10252 : {
10253 1880 : if (gfc_match ("public") != MATCH_YES)
10254 : return MATCH_NO;
10255 :
10256 : /* Try matching PUBLIC without an access-list. */
10257 1528 : if (gfc_match_eos () == MATCH_YES)
10258 : {
10259 45 : if (gfc_current_state () != COMP_MODULE)
10260 : {
10261 2 : gfc_error ("PUBLIC statement at %C is only allowed in the "
10262 : "specification part of a module");
10263 2 : return MATCH_ERROR;
10264 : }
10265 :
10266 43 : *st = ST_PUBLIC;
10267 43 : return MATCH_YES;
10268 : }
10269 :
10270 : /* At this point in free-form source code, PUBLIC must be followed
10271 : by whitespace or ::. */
10272 1483 : if (gfc_current_form == FORM_FREE)
10273 : {
10274 1481 : char c = gfc_peek_ascii_char ();
10275 1481 : if (!gfc_is_whitespace (c) && c != ':')
10276 : return MATCH_NO;
10277 : }
10278 :
10279 1482 : if (gfc_current_state () != COMP_MODULE)
10280 : {
10281 1 : gfc_error ("PUBLIC statement at %C is only allowed in the "
10282 : "specification part of a module");
10283 1 : return MATCH_ERROR;
10284 : }
10285 :
10286 1481 : *st = ST_ATTR_DECL;
10287 1481 : return access_attr_decl (ST_PUBLIC);
10288 : }
10289 :
10290 :
10291 : /* Workhorse for gfc_match_parameter. */
10292 :
10293 : static match
10294 8533 : do_parm (void)
10295 : {
10296 8533 : gfc_symbol *sym;
10297 8533 : gfc_expr *init;
10298 8533 : gfc_charlen *saved_cl_list;
10299 8533 : match m;
10300 8533 : bool t;
10301 :
10302 8533 : saved_cl_list = gfc_current_ns->cl_list;
10303 :
10304 8533 : m = gfc_match_symbol (&sym, 0);
10305 8533 : if (m == MATCH_NO)
10306 0 : gfc_error ("Expected variable name at %C in PARAMETER statement");
10307 :
10308 8533 : if (m != MATCH_YES)
10309 : return m;
10310 :
10311 8533 : if (gfc_match_char ('=') == MATCH_NO)
10312 : {
10313 0 : gfc_error ("Expected = sign in PARAMETER statement at %C");
10314 0 : return MATCH_ERROR;
10315 : }
10316 :
10317 8533 : m = gfc_match_init_expr (&init);
10318 8533 : if (m == MATCH_NO)
10319 0 : gfc_error ("Expected expression at %C in PARAMETER statement");
10320 8533 : if (m != MATCH_YES)
10321 : return m;
10322 :
10323 8532 : if (sym->ts.type == BT_UNKNOWN
10324 8532 : && !gfc_set_default_type (sym, 1, NULL))
10325 : {
10326 1 : m = MATCH_ERROR;
10327 1 : goto cleanup;
10328 : }
10329 :
10330 8531 : if (!gfc_check_assign_symbol (sym, NULL, init)
10331 8531 : || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL))
10332 : {
10333 1 : m = MATCH_ERROR;
10334 1 : goto cleanup;
10335 : }
10336 :
10337 8530 : if (sym->value)
10338 : {
10339 1 : gfc_error ("Initializing already initialized variable at %C");
10340 1 : m = MATCH_ERROR;
10341 1 : goto cleanup;
10342 : }
10343 :
10344 8529 : t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus,
10345 : saved_cl_list);
10346 8529 : return (t) ? MATCH_YES : MATCH_ERROR;
10347 :
10348 3 : cleanup:
10349 3 : gfc_free_expr (init);
10350 3 : return m;
10351 : }
10352 :
10353 :
10354 : /* Match a parameter statement, with the weird syntax that these have. */
10355 :
10356 : match
10357 7820 : gfc_match_parameter (void)
10358 : {
10359 7820 : const char *term = " )%t";
10360 7820 : match m;
10361 :
10362 7820 : if (gfc_match_char ('(') == MATCH_NO)
10363 : {
10364 : /* With legacy PARAMETER statements, don't expect a terminating ')'. */
10365 28 : if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C"))
10366 : return MATCH_NO;
10367 7819 : term = " %t";
10368 : }
10369 :
10370 8533 : for (;;)
10371 : {
10372 8533 : m = do_parm ();
10373 8533 : if (m != MATCH_YES)
10374 : break;
10375 :
10376 8529 : if (gfc_match (term) == MATCH_YES)
10377 : break;
10378 :
10379 714 : if (gfc_match_char (',') != MATCH_YES)
10380 : {
10381 0 : gfc_error ("Unexpected characters in PARAMETER statement at %C");
10382 0 : m = MATCH_ERROR;
10383 0 : break;
10384 : }
10385 : }
10386 :
10387 : return m;
10388 : }
10389 :
10390 :
10391 : match
10392 8 : gfc_match_automatic (void)
10393 : {
10394 8 : gfc_symbol *sym;
10395 8 : match m;
10396 8 : bool seen_symbol = false;
10397 :
10398 8 : if (!flag_dec_static)
10399 : {
10400 2 : gfc_error ("%s at %C is a DEC extension, enable with "
10401 : "%<-fdec-static%>",
10402 : "AUTOMATIC"
10403 : );
10404 2 : return MATCH_ERROR;
10405 : }
10406 :
10407 6 : gfc_match (" ::");
10408 :
10409 6 : for (;;)
10410 : {
10411 6 : m = gfc_match_symbol (&sym, 0);
10412 6 : switch (m)
10413 : {
10414 : case MATCH_NO:
10415 : break;
10416 :
10417 : case MATCH_ERROR:
10418 : return MATCH_ERROR;
10419 :
10420 4 : case MATCH_YES:
10421 4 : if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus))
10422 : return MATCH_ERROR;
10423 : seen_symbol = true;
10424 : break;
10425 : }
10426 :
10427 4 : if (gfc_match_eos () == MATCH_YES)
10428 : break;
10429 0 : if (gfc_match_char (',') != MATCH_YES)
10430 0 : goto syntax;
10431 : }
10432 :
10433 4 : if (!seen_symbol)
10434 : {
10435 2 : gfc_error ("Expected entity-list in AUTOMATIC statement at %C");
10436 2 : return MATCH_ERROR;
10437 : }
10438 :
10439 : return MATCH_YES;
10440 :
10441 0 : syntax:
10442 0 : gfc_error ("Syntax error in AUTOMATIC statement at %C");
10443 0 : return MATCH_ERROR;
10444 : }
10445 :
10446 :
10447 : match
10448 7 : gfc_match_static (void)
10449 : {
10450 7 : gfc_symbol *sym;
10451 7 : match m;
10452 7 : bool seen_symbol = false;
10453 :
10454 7 : if (!flag_dec_static)
10455 : {
10456 2 : gfc_error ("%s at %C is a DEC extension, enable with "
10457 : "%<-fdec-static%>",
10458 : "STATIC");
10459 2 : return MATCH_ERROR;
10460 : }
10461 :
10462 5 : gfc_match (" ::");
10463 :
10464 5 : for (;;)
10465 : {
10466 5 : m = gfc_match_symbol (&sym, 0);
10467 5 : switch (m)
10468 : {
10469 : case MATCH_NO:
10470 : break;
10471 :
10472 : case MATCH_ERROR:
10473 : return MATCH_ERROR;
10474 :
10475 3 : case MATCH_YES:
10476 3 : if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name,
10477 : &gfc_current_locus))
10478 : return MATCH_ERROR;
10479 : seen_symbol = true;
10480 : break;
10481 : }
10482 :
10483 3 : if (gfc_match_eos () == MATCH_YES)
10484 : break;
10485 0 : if (gfc_match_char (',') != MATCH_YES)
10486 0 : goto syntax;
10487 : }
10488 :
10489 3 : if (!seen_symbol)
10490 : {
10491 2 : gfc_error ("Expected entity-list in STATIC statement at %C");
10492 2 : return MATCH_ERROR;
10493 : }
10494 :
10495 : return MATCH_YES;
10496 :
10497 0 : syntax:
10498 0 : gfc_error ("Syntax error in STATIC statement at %C");
10499 0 : return MATCH_ERROR;
10500 : }
10501 :
10502 :
10503 : /* Save statements have a special syntax. */
10504 :
10505 : match
10506 272 : gfc_match_save (void)
10507 : {
10508 272 : char n[GFC_MAX_SYMBOL_LEN+1];
10509 272 : gfc_common_head *c;
10510 272 : gfc_symbol *sym;
10511 272 : match m;
10512 :
10513 272 : if (gfc_match_eos () == MATCH_YES)
10514 : {
10515 150 : if (gfc_current_ns->seen_save)
10516 : {
10517 7 : if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C "
10518 : "follows previous SAVE statement"))
10519 : return MATCH_ERROR;
10520 : }
10521 :
10522 149 : gfc_current_ns->save_all = gfc_current_ns->seen_save = 1;
10523 149 : return MATCH_YES;
10524 : }
10525 :
10526 122 : if (gfc_current_ns->save_all)
10527 : {
10528 7 : if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows "
10529 : "blanket SAVE statement"))
10530 : return MATCH_ERROR;
10531 : }
10532 :
10533 121 : gfc_match (" ::");
10534 :
10535 183 : for (;;)
10536 : {
10537 183 : m = gfc_match_symbol (&sym, 0);
10538 183 : switch (m)
10539 : {
10540 181 : case MATCH_YES:
10541 181 : if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name,
10542 : &gfc_current_locus))
10543 : return MATCH_ERROR;
10544 179 : goto next_item;
10545 :
10546 : case MATCH_NO:
10547 : break;
10548 :
10549 : case MATCH_ERROR:
10550 : return MATCH_ERROR;
10551 : }
10552 :
10553 2 : m = gfc_match (" / %n /", &n);
10554 2 : if (m == MATCH_ERROR)
10555 : return MATCH_ERROR;
10556 2 : if (m == MATCH_NO)
10557 0 : goto syntax;
10558 :
10559 : /* F2023:C1108: A SAVE statement in a BLOCK construct shall contain a
10560 : saved-entity-list that does not specify a common-block-name. */
10561 2 : if (gfc_current_state () == COMP_BLOCK)
10562 : {
10563 1 : gfc_error ("SAVE of COMMON block %qs at %C is not allowed "
10564 : "in a BLOCK construct", n);
10565 1 : return MATCH_ERROR;
10566 : }
10567 :
10568 1 : c = gfc_get_common (n, 0);
10569 1 : c->saved = 1;
10570 :
10571 1 : gfc_current_ns->seen_save = 1;
10572 :
10573 180 : next_item:
10574 180 : if (gfc_match_eos () == MATCH_YES)
10575 : break;
10576 62 : if (gfc_match_char (',') != MATCH_YES)
10577 0 : goto syntax;
10578 : }
10579 :
10580 : return MATCH_YES;
10581 :
10582 0 : syntax:
10583 0 : if (gfc_current_ns->seen_save)
10584 : {
10585 0 : gfc_error ("Syntax error in SAVE statement at %C");
10586 0 : return MATCH_ERROR;
10587 : }
10588 : else
10589 : return MATCH_NO;
10590 : }
10591 :
10592 :
10593 : match
10594 93 : gfc_match_value (void)
10595 : {
10596 93 : gfc_symbol *sym;
10597 93 : match m;
10598 :
10599 : /* This is not allowed within a BLOCK construct! */
10600 93 : if (gfc_current_state () == COMP_BLOCK)
10601 : {
10602 2 : gfc_error ("VALUE is not allowed inside of BLOCK at %C");
10603 2 : return MATCH_ERROR;
10604 : }
10605 :
10606 91 : if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C"))
10607 : return MATCH_ERROR;
10608 :
10609 90 : if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
10610 : {
10611 : return MATCH_ERROR;
10612 : }
10613 :
10614 90 : if (gfc_match_eos () == MATCH_YES)
10615 0 : goto syntax;
10616 :
10617 116 : for(;;)
10618 : {
10619 116 : m = gfc_match_symbol (&sym, 0);
10620 116 : switch (m)
10621 : {
10622 116 : case MATCH_YES:
10623 116 : if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus))
10624 : return MATCH_ERROR;
10625 110 : goto next_item;
10626 :
10627 : case MATCH_NO:
10628 : break;
10629 :
10630 : case MATCH_ERROR:
10631 : return MATCH_ERROR;
10632 : }
10633 :
10634 110 : next_item:
10635 110 : if (gfc_match_eos () == MATCH_YES)
10636 : break;
10637 26 : if (gfc_match_char (',') != MATCH_YES)
10638 0 : goto syntax;
10639 : }
10640 :
10641 : return MATCH_YES;
10642 :
10643 0 : syntax:
10644 0 : gfc_error ("Syntax error in VALUE statement at %C");
10645 0 : return MATCH_ERROR;
10646 : }
10647 :
10648 :
10649 : match
10650 45 : gfc_match_volatile (void)
10651 : {
10652 45 : gfc_symbol *sym;
10653 45 : char *name;
10654 45 : match m;
10655 :
10656 45 : if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C"))
10657 : return MATCH_ERROR;
10658 :
10659 44 : if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
10660 : {
10661 : return MATCH_ERROR;
10662 : }
10663 :
10664 44 : if (gfc_match_eos () == MATCH_YES)
10665 1 : goto syntax;
10666 :
10667 48 : for(;;)
10668 : {
10669 : /* VOLATILE is special because it can be added to host-associated
10670 : symbols locally. Except for coarrays. */
10671 48 : m = gfc_match_symbol (&sym, 1);
10672 48 : switch (m)
10673 : {
10674 48 : case MATCH_YES:
10675 48 : name = XALLOCAVAR (char, strlen (sym->name) + 1);
10676 48 : strcpy (name, sym->name);
10677 48 : if (!check_function_name (name))
10678 : return MATCH_ERROR;
10679 : /* F2008, C560+C561. VOLATILE for host-/use-associated variable or
10680 : for variable in a BLOCK which is defined outside of the BLOCK. */
10681 47 : if (sym->ns != gfc_current_ns && sym->attr.codimension)
10682 : {
10683 2 : gfc_error ("Specifying VOLATILE for coarray variable %qs at "
10684 : "%C, which is use-/host-associated", sym->name);
10685 2 : return MATCH_ERROR;
10686 : }
10687 45 : if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus))
10688 : return MATCH_ERROR;
10689 42 : goto next_item;
10690 :
10691 : case MATCH_NO:
10692 : break;
10693 :
10694 : case MATCH_ERROR:
10695 : return MATCH_ERROR;
10696 : }
10697 :
10698 42 : next_item:
10699 42 : if (gfc_match_eos () == MATCH_YES)
10700 : break;
10701 5 : if (gfc_match_char (',') != MATCH_YES)
10702 0 : goto syntax;
10703 : }
10704 :
10705 : return MATCH_YES;
10706 :
10707 1 : syntax:
10708 1 : gfc_error ("Syntax error in VOLATILE statement at %C");
10709 1 : return MATCH_ERROR;
10710 : }
10711 :
10712 :
10713 : match
10714 11 : gfc_match_asynchronous (void)
10715 : {
10716 11 : gfc_symbol *sym;
10717 11 : char *name;
10718 11 : match m;
10719 :
10720 11 : if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C"))
10721 : return MATCH_ERROR;
10722 :
10723 10 : if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
10724 : {
10725 : return MATCH_ERROR;
10726 : }
10727 :
10728 10 : if (gfc_match_eos () == MATCH_YES)
10729 0 : goto syntax;
10730 :
10731 10 : for(;;)
10732 : {
10733 : /* ASYNCHRONOUS is special because it can be added to host-associated
10734 : symbols locally. */
10735 10 : m = gfc_match_symbol (&sym, 1);
10736 10 : switch (m)
10737 : {
10738 10 : case MATCH_YES:
10739 10 : name = XALLOCAVAR (char, strlen (sym->name) + 1);
10740 10 : strcpy (name, sym->name);
10741 10 : if (!check_function_name (name))
10742 : return MATCH_ERROR;
10743 9 : if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus))
10744 : return MATCH_ERROR;
10745 7 : goto next_item;
10746 :
10747 : case MATCH_NO:
10748 : break;
10749 :
10750 : case MATCH_ERROR:
10751 : return MATCH_ERROR;
10752 : }
10753 :
10754 7 : next_item:
10755 7 : if (gfc_match_eos () == MATCH_YES)
10756 : break;
10757 0 : if (gfc_match_char (',') != MATCH_YES)
10758 0 : goto syntax;
10759 : }
10760 :
10761 : return MATCH_YES;
10762 :
10763 0 : syntax:
10764 0 : gfc_error ("Syntax error in ASYNCHRONOUS statement at %C");
10765 0 : return MATCH_ERROR;
10766 : }
10767 :
10768 :
10769 : /* Match a module procedure statement in a submodule. */
10770 :
10771 : match
10772 775917 : gfc_match_submod_proc (void)
10773 : {
10774 775917 : char name[GFC_MAX_SYMBOL_LEN + 1];
10775 775917 : gfc_symbol *sym, *fsym;
10776 775917 : match m;
10777 775917 : gfc_formal_arglist *formal, *head, *tail;
10778 :
10779 775917 : if (gfc_current_state () != COMP_CONTAINS
10780 15949 : || !(gfc_state_stack->previous
10781 15949 : && (gfc_state_stack->previous->state == COMP_SUBMODULE
10782 15949 : || gfc_state_stack->previous->state == COMP_MODULE)))
10783 : return MATCH_NO;
10784 :
10785 7951 : m = gfc_match (" module% procedure% %n", name);
10786 7951 : if (m != MATCH_YES)
10787 : return m;
10788 :
10789 267 : if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration "
10790 : "at %C"))
10791 : return MATCH_ERROR;
10792 :
10793 267 : if (get_proc_name (name, &sym, false))
10794 : return MATCH_ERROR;
10795 :
10796 : /* Make sure that the result field is appropriately filled. */
10797 267 : if (sym->tlink && sym->tlink->attr.function)
10798 : {
10799 117 : if (sym->tlink->result && sym->tlink->result != sym->tlink)
10800 : {
10801 67 : sym->result = sym->tlink->result;
10802 67 : if (!sym->result->attr.use_assoc)
10803 : {
10804 20 : gfc_symtree *st = gfc_new_symtree (&gfc_current_ns->sym_root,
10805 : sym->result->name);
10806 20 : st->n.sym = sym->result;
10807 20 : sym->result->refs++;
10808 : }
10809 : }
10810 : else
10811 50 : sym->result = sym;
10812 : }
10813 :
10814 : /* Set declared_at as it might point to, e.g., a PUBLIC statement, if
10815 : the symbol existed before. */
10816 267 : sym->declared_at = gfc_current_locus;
10817 :
10818 267 : if (!sym->attr.module_procedure)
10819 : return MATCH_ERROR;
10820 :
10821 : /* Signal match_end to expect "end procedure". */
10822 265 : sym->abr_modproc_decl = 1;
10823 :
10824 : /* Change from IFSRC_IFBODY coming from the interface declaration. */
10825 265 : sym->attr.if_source = IFSRC_DECL;
10826 :
10827 265 : gfc_new_block = sym;
10828 :
10829 : /* Make a new formal arglist with the symbols in the procedure
10830 : namespace. */
10831 265 : head = tail = NULL;
10832 600 : for (formal = sym->formal; formal && formal->sym; formal = formal->next)
10833 : {
10834 335 : if (formal == sym->formal)
10835 238 : head = tail = gfc_get_formal_arglist ();
10836 : else
10837 : {
10838 97 : tail->next = gfc_get_formal_arglist ();
10839 97 : tail = tail->next;
10840 : }
10841 :
10842 335 : if (gfc_copy_dummy_sym (&fsym, formal->sym, 0))
10843 0 : goto cleanup;
10844 :
10845 335 : tail->sym = fsym;
10846 335 : gfc_set_sym_referenced (fsym);
10847 : }
10848 :
10849 : /* The dummy symbols get cleaned up, when the formal_namespace of the
10850 : interface declaration is cleared. This allows us to add the
10851 : explicit interface as is done for other type of procedure. */
10852 265 : if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head,
10853 : &gfc_current_locus))
10854 : return MATCH_ERROR;
10855 :
10856 265 : if (gfc_match_eos () != MATCH_YES)
10857 : {
10858 : /* Unset st->n.sym. Note: in reject_statement (), the symbol changes are
10859 : undone, such that the st->n.sym->formal points to the original symbol;
10860 : if now this namespace is finalized, the formal namespace is freed,
10861 : but it might be still needed in the parent namespace. */
10862 1 : gfc_symtree *st = gfc_find_symtree (gfc_current_ns->sym_root, sym->name);
10863 1 : st->n.sym = NULL;
10864 1 : gfc_free_symbol (sym->tlink);
10865 1 : sym->tlink = NULL;
10866 1 : sym->refs--;
10867 1 : gfc_syntax_error (ST_MODULE_PROC);
10868 1 : return MATCH_ERROR;
10869 : }
10870 :
10871 : return MATCH_YES;
10872 :
10873 0 : cleanup:
10874 0 : gfc_free_formal_arglist (head);
10875 0 : return MATCH_ERROR;
10876 : }
10877 :
10878 :
10879 : /* Match a module procedure statement. Note that we have to modify
10880 : symbols in the parent's namespace because the current one was there
10881 : to receive symbols that are in an interface's formal argument list. */
10882 :
10883 : match
10884 1626 : gfc_match_modproc (void)
10885 : {
10886 1626 : char name[GFC_MAX_SYMBOL_LEN + 1];
10887 1626 : gfc_symbol *sym;
10888 1626 : match m;
10889 1626 : locus old_locus;
10890 1626 : gfc_namespace *module_ns;
10891 1626 : gfc_interface *old_interface_head, *interface;
10892 :
10893 1626 : if (gfc_state_stack->previous == NULL
10894 1624 : || (gfc_state_stack->state != COMP_INTERFACE
10895 5 : && (gfc_state_stack->state != COMP_CONTAINS
10896 4 : || gfc_state_stack->previous->state != COMP_INTERFACE))
10897 1619 : || current_interface.type == INTERFACE_NAMELESS
10898 1619 : || current_interface.type == INTERFACE_ABSTRACT)
10899 : {
10900 8 : gfc_error ("MODULE PROCEDURE at %C must be in a generic module "
10901 : "interface");
10902 8 : return MATCH_ERROR;
10903 : }
10904 :
10905 1618 : module_ns = gfc_current_ns->parent;
10906 1624 : for (; module_ns; module_ns = module_ns->parent)
10907 1624 : if (module_ns->proc_name->attr.flavor == FL_MODULE
10908 29 : || module_ns->proc_name->attr.flavor == FL_PROGRAM
10909 12 : || (module_ns->proc_name->attr.flavor == FL_PROCEDURE
10910 12 : && !module_ns->proc_name->attr.contained))
10911 : break;
10912 :
10913 1618 : if (module_ns == NULL)
10914 : return MATCH_ERROR;
10915 :
10916 : /* Store the current state of the interface. We will need it if we
10917 : end up with a syntax error and need to recover. */
10918 1618 : old_interface_head = gfc_current_interface_head ();
10919 :
10920 : /* Check if the F2008 optional double colon appears. */
10921 1618 : gfc_gobble_whitespace ();
10922 1618 : old_locus = gfc_current_locus;
10923 1618 : if (gfc_match ("::") == MATCH_YES)
10924 : {
10925 31 : if (!gfc_notify_std (GFC_STD_F2008, "double colon in "
10926 : "MODULE PROCEDURE statement at %L", &old_locus))
10927 : return MATCH_ERROR;
10928 : }
10929 : else
10930 1587 : gfc_current_locus = old_locus;
10931 :
10932 1973 : for (;;)
10933 : {
10934 1973 : bool last = false;
10935 1973 : old_locus = gfc_current_locus;
10936 :
10937 1973 : m = gfc_match_name (name);
10938 1973 : if (m == MATCH_NO)
10939 1 : goto syntax;
10940 1972 : if (m != MATCH_YES)
10941 : return MATCH_ERROR;
10942 :
10943 : /* Check for syntax error before starting to add symbols to the
10944 : current namespace. */
10945 1972 : if (gfc_match_eos () == MATCH_YES)
10946 : last = true;
10947 :
10948 360 : if (!last && gfc_match_char (',') != MATCH_YES)
10949 2 : goto syntax;
10950 :
10951 : /* Now we're sure the syntax is valid, we process this item
10952 : further. */
10953 1970 : if (gfc_get_symbol (name, module_ns, &sym))
10954 : return MATCH_ERROR;
10955 :
10956 1970 : if (sym->attr.intrinsic)
10957 : {
10958 1 : gfc_error ("Intrinsic procedure at %L cannot be a MODULE "
10959 : "PROCEDURE", &old_locus);
10960 1 : return MATCH_ERROR;
10961 : }
10962 :
10963 1969 : if (sym->attr.proc != PROC_MODULE
10964 1969 : && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL))
10965 : return MATCH_ERROR;
10966 :
10967 1966 : if (!gfc_add_interface (sym))
10968 : return MATCH_ERROR;
10969 :
10970 1963 : sym->attr.mod_proc = 1;
10971 1963 : sym->declared_at = old_locus;
10972 :
10973 1963 : if (last)
10974 : break;
10975 : }
10976 :
10977 : return MATCH_YES;
10978 :
10979 3 : syntax:
10980 : /* Restore the previous state of the interface. */
10981 3 : interface = gfc_current_interface_head ();
10982 3 : gfc_set_current_interface_head (old_interface_head);
10983 :
10984 : /* Free the new interfaces. */
10985 10 : while (interface != old_interface_head)
10986 : {
10987 4 : gfc_interface *i = interface->next;
10988 4 : free (interface);
10989 4 : interface = i;
10990 : }
10991 :
10992 : /* And issue a syntax error. */
10993 3 : gfc_syntax_error (ST_MODULE_PROC);
10994 3 : return MATCH_ERROR;
10995 : }
10996 :
10997 :
10998 : /* Check a derived type that is being extended. */
10999 :
11000 : static gfc_symbol*
11001 1581 : check_extended_derived_type (char *name)
11002 : {
11003 1581 : gfc_symbol *extended;
11004 :
11005 1581 : if (gfc_find_symbol (name, gfc_current_ns, 1, &extended))
11006 : {
11007 0 : gfc_error ("Ambiguous symbol in TYPE definition at %C");
11008 0 : return NULL;
11009 : }
11010 :
11011 1581 : extended = gfc_find_dt_in_generic (extended);
11012 :
11013 : /* F08:C428. */
11014 1581 : if (!extended)
11015 : {
11016 2 : gfc_error ("Symbol %qs at %C has not been previously defined", name);
11017 2 : return NULL;
11018 : }
11019 :
11020 1579 : if (extended->attr.flavor != FL_DERIVED)
11021 : {
11022 0 : gfc_error ("%qs in EXTENDS expression at %C is not a "
11023 : "derived type", name);
11024 0 : return NULL;
11025 : }
11026 :
11027 1579 : if (extended->attr.is_bind_c)
11028 : {
11029 1 : gfc_error ("%qs cannot be extended at %C because it "
11030 : "is BIND(C)", extended->name);
11031 1 : return NULL;
11032 : }
11033 :
11034 1578 : if (extended->attr.sequence)
11035 : {
11036 1 : gfc_error ("%qs cannot be extended at %C because it "
11037 : "is a SEQUENCE type", extended->name);
11038 1 : return NULL;
11039 : }
11040 :
11041 : return extended;
11042 : }
11043 :
11044 :
11045 : /* Match the optional attribute specifiers for a type declaration.
11046 : Return MATCH_ERROR if an error is encountered in one of the handled
11047 : attributes (public, private, bind(c)), MATCH_NO if what's found is
11048 : not a handled attribute, and MATCH_YES otherwise. TODO: More error
11049 : checking on attribute conflicts needs to be done. */
11050 :
11051 : static match
11052 20041 : gfc_get_type_attr_spec (symbol_attribute *attr, char *name)
11053 : {
11054 : /* See if the derived type is marked as private. */
11055 20041 : if (gfc_match (" , private") == MATCH_YES)
11056 : {
11057 15 : if (gfc_current_state () != COMP_MODULE)
11058 : {
11059 1 : gfc_error ("Derived type at %C can only be PRIVATE in the "
11060 : "specification part of a module");
11061 1 : return MATCH_ERROR;
11062 : }
11063 :
11064 14 : if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL))
11065 0 : return MATCH_ERROR;
11066 : }
11067 20026 : else if (gfc_match (" , public") == MATCH_YES)
11068 : {
11069 558 : if (gfc_current_state () != COMP_MODULE)
11070 : {
11071 0 : gfc_error ("Derived type at %C can only be PUBLIC in the "
11072 : "specification part of a module");
11073 0 : return MATCH_ERROR;
11074 : }
11075 :
11076 558 : if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL))
11077 0 : return MATCH_ERROR;
11078 : }
11079 19468 : else if (gfc_match (" , bind ( c )") == MATCH_YES)
11080 : {
11081 : /* If the type is defined to be bind(c) it then needs to make
11082 : sure that all fields are interoperable. This will
11083 : need to be a semantic check on the finished derived type.
11084 : See 15.2.3 (lines 9-12) of F2003 draft. */
11085 407 : if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0))
11086 0 : return MATCH_ERROR;
11087 :
11088 : /* TODO: attr conflicts need to be checked, probably in symbol.cc. */
11089 : }
11090 19061 : else if (gfc_match (" , abstract") == MATCH_YES)
11091 : {
11092 349 : if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C"))
11093 : return MATCH_ERROR;
11094 :
11095 348 : if (!gfc_add_abstract (attr, &gfc_current_locus))
11096 1 : return MATCH_ERROR;
11097 : }
11098 18712 : else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES)
11099 : {
11100 1582 : if (!gfc_add_extension (attr, &gfc_current_locus))
11101 0 : return MATCH_ERROR;
11102 : }
11103 : else
11104 : return MATCH_NO;
11105 :
11106 : /* If we get here, something matched. */
11107 : return MATCH_YES;
11108 : }
11109 :
11110 :
11111 : /* Common function for type declaration blocks similar to derived types, such
11112 : as STRUCTURES and MAPs. Unlike derived types, a structure type
11113 : does NOT have a generic symbol matching the name given by the user.
11114 : STRUCTUREs can share names with variables and PARAMETERs so we must allow
11115 : for the creation of an independent symbol.
11116 : Other parameters are a message to prefix errors with, the name of the new
11117 : type to be created, and the flavor to add to the resulting symbol. */
11118 :
11119 : static bool
11120 717 : get_struct_decl (const char *name, sym_flavor fl, locus *decl,
11121 : gfc_symbol **result)
11122 : {
11123 717 : gfc_symbol *sym;
11124 717 : locus where;
11125 :
11126 717 : gcc_assert (name[0] == (char) TOUPPER (name[0]));
11127 :
11128 717 : if (decl)
11129 717 : where = *decl;
11130 : else
11131 0 : where = gfc_current_locus;
11132 :
11133 717 : if (gfc_get_symbol (name, NULL, &sym))
11134 : return false;
11135 :
11136 717 : if (!sym)
11137 : {
11138 0 : gfc_internal_error ("Failed to create structure type '%s' at %C", name);
11139 : return false;
11140 : }
11141 :
11142 717 : if (sym->components != NULL || sym->attr.zero_comp)
11143 : {
11144 3 : gfc_error ("Type definition of %qs at %C was already defined at %L",
11145 : sym->name, &sym->declared_at);
11146 3 : return false;
11147 : }
11148 :
11149 714 : sym->declared_at = where;
11150 :
11151 714 : if (sym->attr.flavor != fl
11152 714 : && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL))
11153 : return false;
11154 :
11155 714 : if (!sym->hash_value)
11156 : /* Set the hash for the compound name for this type. */
11157 713 : sym->hash_value = gfc_hash_value (sym);
11158 :
11159 : /* Normally the type is expected to have been completely parsed by the time
11160 : a field declaration with this type is seen. For unions, maps, and nested
11161 : structure declarations, we need to indicate that it is okay that we
11162 : haven't seen any components yet. This will be updated after the structure
11163 : is fully parsed. */
11164 714 : sym->attr.zero_comp = 0;
11165 :
11166 : /* Structures always act like derived-types with the SEQUENCE attribute */
11167 714 : gfc_add_sequence (&sym->attr, sym->name, NULL);
11168 :
11169 714 : if (result) *result = sym;
11170 :
11171 : return true;
11172 : }
11173 :
11174 :
11175 : /* Match the opening of a MAP block. Like a struct within a union in C;
11176 : behaves identical to STRUCTURE blocks. */
11177 :
11178 : match
11179 259 : gfc_match_map (void)
11180 : {
11181 : /* Counter used to give unique internal names to map structures. */
11182 259 : static unsigned int gfc_map_id = 0;
11183 259 : char name[GFC_MAX_SYMBOL_LEN + 1];
11184 259 : gfc_symbol *sym;
11185 259 : locus old_loc;
11186 :
11187 259 : old_loc = gfc_current_locus;
11188 :
11189 259 : if (gfc_match_eos () != MATCH_YES)
11190 : {
11191 1 : gfc_error ("Junk after MAP statement at %C");
11192 1 : gfc_current_locus = old_loc;
11193 1 : return MATCH_ERROR;
11194 : }
11195 :
11196 : /* Map blocks are anonymous so we make up unique names for the symbol table
11197 : which are invalid Fortran identifiers. */
11198 258 : snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++);
11199 :
11200 258 : if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym))
11201 : return MATCH_ERROR;
11202 :
11203 258 : gfc_new_block = sym;
11204 :
11205 258 : return MATCH_YES;
11206 : }
11207 :
11208 :
11209 : /* Match the opening of a UNION block. */
11210 :
11211 : match
11212 133 : gfc_match_union (void)
11213 : {
11214 : /* Counter used to give unique internal names to union types. */
11215 133 : static unsigned int gfc_union_id = 0;
11216 133 : char name[GFC_MAX_SYMBOL_LEN + 1];
11217 133 : gfc_symbol *sym;
11218 133 : locus old_loc;
11219 :
11220 133 : old_loc = gfc_current_locus;
11221 :
11222 133 : if (gfc_match_eos () != MATCH_YES)
11223 : {
11224 1 : gfc_error ("Junk after UNION statement at %C");
11225 1 : gfc_current_locus = old_loc;
11226 1 : return MATCH_ERROR;
11227 : }
11228 :
11229 : /* Unions are anonymous so we make up unique names for the symbol table
11230 : which are invalid Fortran identifiers. */
11231 132 : snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++);
11232 :
11233 132 : if (!get_struct_decl (name, FL_UNION, &old_loc, &sym))
11234 : return MATCH_ERROR;
11235 :
11236 132 : gfc_new_block = sym;
11237 :
11238 132 : return MATCH_YES;
11239 : }
11240 :
11241 :
11242 : /* Match the beginning of a STRUCTURE declaration. This is similar to
11243 : matching the beginning of a derived type declaration with a few
11244 : twists. The resulting type symbol has no access control or other
11245 : interesting attributes. */
11246 :
11247 : match
11248 336 : gfc_match_structure_decl (void)
11249 : {
11250 : /* Counter used to give unique internal names to anonymous structures. */
11251 336 : static unsigned int gfc_structure_id = 0;
11252 336 : char name[GFC_MAX_SYMBOL_LEN + 1];
11253 336 : gfc_symbol *sym;
11254 336 : match m;
11255 336 : locus where;
11256 :
11257 336 : if (!flag_dec_structure)
11258 : {
11259 3 : gfc_error ("%s at %C is a DEC extension, enable with "
11260 : "%<-fdec-structure%>",
11261 : "STRUCTURE");
11262 3 : return MATCH_ERROR;
11263 : }
11264 :
11265 333 : name[0] = '\0';
11266 :
11267 333 : m = gfc_match (" /%n/", name);
11268 333 : if (m != MATCH_YES)
11269 : {
11270 : /* Non-nested structure declarations require a structure name. */
11271 24 : if (!gfc_comp_struct (gfc_current_state ()))
11272 : {
11273 4 : gfc_error ("Structure name expected in non-nested structure "
11274 : "declaration at %C");
11275 4 : return MATCH_ERROR;
11276 : }
11277 : /* This is an anonymous structure; make up a unique name for it
11278 : (upper-case letters never make it to symbol names from the source).
11279 : The important thing is initializing the type variable
11280 : and setting gfc_new_symbol, which is immediately used by
11281 : parse_structure () and variable_decl () to add components of
11282 : this type. */
11283 20 : snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++);
11284 : }
11285 :
11286 329 : where = gfc_current_locus;
11287 : /* No field list allowed after non-nested structure declaration. */
11288 329 : if (!gfc_comp_struct (gfc_current_state ())
11289 296 : && gfc_match_eos () != MATCH_YES)
11290 : {
11291 1 : gfc_error ("Junk after non-nested STRUCTURE statement at %C");
11292 1 : return MATCH_ERROR;
11293 : }
11294 :
11295 : /* Make sure the name is not the name of an intrinsic type. */
11296 328 : if (gfc_is_intrinsic_typename (name))
11297 : {
11298 1 : gfc_error ("Structure name %qs at %C cannot be the same as an"
11299 : " intrinsic type", name);
11300 1 : return MATCH_ERROR;
11301 : }
11302 :
11303 : /* Store the actual type symbol for the structure with an upper-case first
11304 : letter (an invalid Fortran identifier). */
11305 :
11306 327 : if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym))
11307 : return MATCH_ERROR;
11308 :
11309 324 : gfc_new_block = sym;
11310 324 : return MATCH_YES;
11311 : }
11312 :
11313 :
11314 : /* This function does some work to determine which matcher should be used to
11315 : * match a statement beginning with "TYPE". This is used to disambiguate TYPE
11316 : * as an alias for PRINT from derived type declarations, TYPE IS statements,
11317 : * and [parameterized] derived type declarations. */
11318 :
11319 : match
11320 538440 : gfc_match_type (gfc_statement *st)
11321 : {
11322 538440 : char name[GFC_MAX_SYMBOL_LEN + 1];
11323 538440 : match m;
11324 538440 : locus old_loc;
11325 :
11326 : /* Requires -fdec. */
11327 538440 : if (!flag_dec)
11328 : return MATCH_NO;
11329 :
11330 2483 : m = gfc_match ("type");
11331 2483 : if (m != MATCH_YES)
11332 : return m;
11333 : /* If we already have an error in the buffer, it is probably from failing to
11334 : * match a derived type data declaration. Let it happen. */
11335 20 : else if (gfc_error_flag_test ())
11336 : return MATCH_NO;
11337 :
11338 20 : old_loc = gfc_current_locus;
11339 20 : *st = ST_NONE;
11340 :
11341 : /* If we see an attribute list before anything else it's definitely a derived
11342 : * type declaration. */
11343 20 : if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES)
11344 8 : goto derived;
11345 :
11346 : /* By now "TYPE" has already been matched. If we do not see a name, this may
11347 : * be something like "TYPE *" or "TYPE <fmt>". */
11348 12 : m = gfc_match_name (name);
11349 12 : if (m != MATCH_YES)
11350 : {
11351 : /* Let print match if it can, otherwise throw an error from
11352 : * gfc_match_derived_decl. */
11353 7 : gfc_current_locus = old_loc;
11354 7 : if (gfc_match_print () == MATCH_YES)
11355 : {
11356 7 : *st = ST_WRITE;
11357 7 : return MATCH_YES;
11358 : }
11359 0 : goto derived;
11360 : }
11361 :
11362 : /* Check for EOS. */
11363 5 : if (gfc_match_eos () == MATCH_YES)
11364 : {
11365 : /* By now we have "TYPE <name> <EOS>". Check first if the name is an
11366 : * intrinsic typename - if so let gfc_match_derived_decl dump an error.
11367 : * Otherwise if gfc_match_derived_decl fails it's probably an existing
11368 : * symbol which can be printed. */
11369 3 : gfc_current_locus = old_loc;
11370 3 : m = gfc_match_derived_decl ();
11371 3 : if (gfc_is_intrinsic_typename (name) || m == MATCH_YES)
11372 : {
11373 2 : *st = ST_DERIVED_DECL;
11374 2 : return m;
11375 : }
11376 : }
11377 : else
11378 : {
11379 : /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration
11380 : like <type name(parameter)>. */
11381 2 : gfc_gobble_whitespace ();
11382 2 : bool paren = gfc_peek_ascii_char () == '(';
11383 2 : if (paren)
11384 : {
11385 1 : if (strcmp ("is", name) == 0)
11386 1 : goto typeis;
11387 : else
11388 0 : goto derived;
11389 : }
11390 : }
11391 :
11392 : /* Treat TYPE... like PRINT... */
11393 2 : gfc_current_locus = old_loc;
11394 2 : *st = ST_WRITE;
11395 2 : return gfc_match_print ();
11396 :
11397 8 : derived:
11398 8 : gfc_current_locus = old_loc;
11399 8 : *st = ST_DERIVED_DECL;
11400 8 : return gfc_match_derived_decl ();
11401 :
11402 1 : typeis:
11403 1 : gfc_current_locus = old_loc;
11404 1 : *st = ST_TYPE_IS;
11405 1 : return gfc_match_type_is ();
11406 : }
11407 :
11408 :
11409 : /* Match the beginning of a derived type declaration. If a type name
11410 : was the result of a function, then it is possible to have a symbol
11411 : already to be known as a derived type yet have no components. */
11412 :
11413 : match
11414 17137 : gfc_match_derived_decl (void)
11415 : {
11416 17137 : char name[GFC_MAX_SYMBOL_LEN + 1];
11417 17137 : char parent[GFC_MAX_SYMBOL_LEN + 1];
11418 17137 : symbol_attribute attr;
11419 17137 : gfc_symbol *sym, *gensym;
11420 17137 : gfc_symbol *extended;
11421 17137 : match m;
11422 17137 : match is_type_attr_spec = MATCH_NO;
11423 17137 : bool seen_attr = false;
11424 17137 : gfc_interface *intr = NULL, *head;
11425 17137 : bool parameterized_type = false;
11426 17137 : bool seen_colons = false;
11427 :
11428 17137 : if (gfc_comp_struct (gfc_current_state ()))
11429 : return MATCH_NO;
11430 :
11431 17133 : name[0] = '\0';
11432 17133 : parent[0] = '\0';
11433 17133 : gfc_clear_attr (&attr);
11434 17133 : extended = NULL;
11435 :
11436 20041 : do
11437 : {
11438 20041 : is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent);
11439 20041 : if (is_type_attr_spec == MATCH_ERROR)
11440 : return MATCH_ERROR;
11441 20038 : if (is_type_attr_spec == MATCH_YES)
11442 2908 : seen_attr = true;
11443 20038 : } while (is_type_attr_spec == MATCH_YES);
11444 :
11445 : /* Deal with derived type extensions. The extension attribute has
11446 : been added to 'attr' but now the parent type must be found and
11447 : checked. */
11448 17130 : if (parent[0])
11449 1581 : extended = check_extended_derived_type (parent);
11450 :
11451 17130 : if (parent[0] && !extended)
11452 : return MATCH_ERROR;
11453 :
11454 17126 : m = gfc_match (" ::");
11455 17126 : if (m == MATCH_YES)
11456 : {
11457 : seen_colons = true;
11458 : }
11459 10656 : else if (seen_attr)
11460 : {
11461 5 : gfc_error ("Expected :: in TYPE definition at %C");
11462 5 : return MATCH_ERROR;
11463 : }
11464 :
11465 : /* In free source form, need to check for TYPE XXX as oppose to TYPEXXX.
11466 : But, we need to simply return for TYPE(. */
11467 10651 : if (m == MATCH_NO && gfc_current_form == FORM_FREE)
11468 : {
11469 10602 : char c = gfc_peek_ascii_char ();
11470 10602 : if (c == '(')
11471 : return m;
11472 10521 : if (!gfc_is_whitespace (c))
11473 : {
11474 4 : gfc_error ("Mangled derived type definition at %C");
11475 4 : return MATCH_NO;
11476 : }
11477 : }
11478 :
11479 17036 : m = gfc_match (" %n ", name);
11480 17036 : if (m != MATCH_YES)
11481 : return m;
11482 :
11483 : /* Make sure that we don't identify TYPE IS (...) as a parameterized
11484 : derived type named 'is'.
11485 : TODO Expand the check, when 'name' = "is" by matching " (tname) "
11486 : and checking if this is a(n intrinsic) typename. This picks up
11487 : misplaced TYPE IS statements such as in select_type_1.f03. */
11488 17024 : if (gfc_peek_ascii_char () == '(')
11489 : {
11490 4067 : if (gfc_current_state () == COMP_SELECT_TYPE
11491 531 : || (!seen_colons && !strcmp (name, "is")))
11492 : return MATCH_NO;
11493 : parameterized_type = true;
11494 : }
11495 :
11496 13486 : m = gfc_match_eos ();
11497 13486 : if (m != MATCH_YES && !parameterized_type)
11498 : return m;
11499 :
11500 : /* Make sure the name is not the name of an intrinsic type. */
11501 13483 : if (gfc_is_intrinsic_typename (name))
11502 : {
11503 18 : gfc_error ("Type name %qs at %C cannot be the same as an intrinsic "
11504 : "type", name);
11505 18 : return MATCH_ERROR;
11506 : }
11507 :
11508 13465 : if (gfc_get_symbol (name, NULL, &gensym))
11509 : return MATCH_ERROR;
11510 :
11511 13465 : if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN)
11512 : {
11513 5 : if (gensym->ts.u.derived)
11514 0 : gfc_error ("Derived type name %qs at %C already has a basic type "
11515 : "of %s", gensym->name, gfc_typename (&gensym->ts));
11516 : else
11517 5 : gfc_error ("Derived type name %qs at %C already has a basic type",
11518 : gensym->name);
11519 : return MATCH_ERROR;
11520 : }
11521 :
11522 13460 : if (!gensym->attr.generic
11523 13460 : && !gfc_add_generic (&gensym->attr, gensym->name, NULL))
11524 : return MATCH_ERROR;
11525 :
11526 13456 : if (!gensym->attr.function
11527 13456 : && !gfc_add_function (&gensym->attr, gensym->name, NULL))
11528 : return MATCH_ERROR;
11529 :
11530 13455 : if (gensym->attr.dummy)
11531 : {
11532 1 : gfc_error ("Dummy argument %qs at %L cannot be a derived type at %C",
11533 : name, &gensym->declared_at);
11534 1 : return MATCH_ERROR;
11535 : }
11536 :
11537 13454 : sym = gfc_find_dt_in_generic (gensym);
11538 :
11539 13454 : if (sym && (sym->components != NULL || sym->attr.zero_comp))
11540 : {
11541 1 : gfc_error ("Derived type definition of %qs at %C has already been "
11542 : "defined", sym->name);
11543 1 : return MATCH_ERROR;
11544 : }
11545 :
11546 13453 : if (!sym)
11547 : {
11548 : /* Use upper case to save the actual derived-type symbol. */
11549 13363 : gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym);
11550 13363 : sym->name = gfc_get_string ("%s", gensym->name);
11551 13363 : head = gensym->generic;
11552 13363 : intr = gfc_get_interface ();
11553 13363 : intr->sym = sym;
11554 13363 : intr->where = gfc_current_locus;
11555 13363 : intr->sym->declared_at = gfc_current_locus;
11556 13363 : intr->next = head;
11557 13363 : gensym->generic = intr;
11558 13363 : gensym->attr.if_source = IFSRC_DECL;
11559 : }
11560 :
11561 : /* The symbol may already have the derived attribute without the
11562 : components. The ways this can happen is via a function
11563 : definition, an INTRINSIC statement or a subtype in another
11564 : derived type that is a pointer. The first part of the AND clause
11565 : is true if the symbol is not the return value of a function. */
11566 13453 : if (sym->attr.flavor != FL_DERIVED
11567 13453 : && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL))
11568 : return MATCH_ERROR;
11569 :
11570 13453 : if (attr.access != ACCESS_UNKNOWN
11571 13453 : && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL))
11572 : return MATCH_ERROR;
11573 13453 : else if (sym->attr.access == ACCESS_UNKNOWN
11574 12885 : && gensym->attr.access != ACCESS_UNKNOWN
11575 13801 : && !gfc_add_access (&sym->attr, gensym->attr.access,
11576 : sym->name, NULL))
11577 : return MATCH_ERROR;
11578 :
11579 13453 : if (sym->attr.access != ACCESS_UNKNOWN
11580 916 : && gensym->attr.access == ACCESS_UNKNOWN)
11581 568 : gensym->attr.access = sym->attr.access;
11582 :
11583 : /* See if the derived type was labeled as bind(c). */
11584 13453 : if (attr.is_bind_c != 0)
11585 404 : sym->attr.is_bind_c = attr.is_bind_c;
11586 :
11587 : /* Construct the f2k_derived namespace if it is not yet there. */
11588 13453 : if (!sym->f2k_derived)
11589 13453 : sym->f2k_derived = gfc_get_namespace (NULL, 0);
11590 :
11591 13453 : if (parameterized_type)
11592 : {
11593 : /* Ignore error or mismatches by going to the end of the statement
11594 : in order to avoid the component declarations causing problems. */
11595 529 : m = gfc_match_formal_arglist (sym, 0, 0, true);
11596 529 : if (m != MATCH_YES)
11597 4 : gfc_error_recovery ();
11598 : else
11599 525 : sym->attr.pdt_template = 1;
11600 529 : m = gfc_match_eos ();
11601 529 : if (m != MATCH_YES)
11602 : {
11603 1 : gfc_error_recovery ();
11604 1 : gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C");
11605 : }
11606 : }
11607 :
11608 13453 : if (extended && !sym->components)
11609 : {
11610 1577 : gfc_component *p;
11611 1577 : gfc_formal_arglist *f, *g, *h;
11612 :
11613 : /* Add the extended derived type as the first component. */
11614 1577 : gfc_add_component (sym, parent, &p);
11615 1577 : extended->refs++;
11616 1577 : gfc_set_sym_referenced (extended);
11617 :
11618 1577 : p->ts.type = BT_DERIVED;
11619 1577 : p->ts.u.derived = extended;
11620 1577 : p->initializer = gfc_default_initializer (&p->ts);
11621 :
11622 : /* Set extension level. */
11623 1577 : if (extended->attr.extension == 255)
11624 : {
11625 : /* Since the extension field is 8 bit wide, we can only have
11626 : up to 255 extension levels. */
11627 0 : gfc_error ("Maximum extension level reached with type %qs at %L",
11628 : extended->name, &extended->declared_at);
11629 0 : return MATCH_ERROR;
11630 : }
11631 1577 : sym->attr.extension = extended->attr.extension + 1;
11632 :
11633 : /* Provide the links between the extended type and its extension. */
11634 1577 : if (!extended->f2k_derived)
11635 1 : extended->f2k_derived = gfc_get_namespace (NULL, 0);
11636 :
11637 : /* Copy the extended type-param-name-list from the extended type,
11638 : append those of the extension and add the whole lot to the
11639 : extension. */
11640 1577 : if (extended->attr.pdt_template)
11641 : {
11642 64 : g = h = NULL;
11643 64 : sym->attr.pdt_template = 1;
11644 195 : for (f = extended->formal; f; f = f->next)
11645 : {
11646 131 : if (f == extended->formal)
11647 : {
11648 64 : g = gfc_get_formal_arglist ();
11649 64 : h = g;
11650 : }
11651 : else
11652 : {
11653 67 : g->next = gfc_get_formal_arglist ();
11654 67 : g = g->next;
11655 : }
11656 131 : g->sym = f->sym;
11657 : }
11658 64 : g->next = sym->formal;
11659 64 : sym->formal = h;
11660 : }
11661 : }
11662 :
11663 13453 : if (!sym->hash_value)
11664 : /* Set the hash for the compound name for this type. */
11665 13453 : sym->hash_value = gfc_hash_value (sym);
11666 :
11667 : /* Take over the ABSTRACT attribute. */
11668 13453 : sym->attr.abstract = attr.abstract;
11669 :
11670 13453 : gfc_new_block = sym;
11671 :
11672 13453 : return MATCH_YES;
11673 : }
11674 :
11675 :
11676 : /* Cray Pointees can be declared as:
11677 : pointer (ipt, a (n,m,...,*)) */
11678 :
11679 : match
11680 240 : gfc_mod_pointee_as (gfc_array_spec *as)
11681 : {
11682 240 : as->cray_pointee = true; /* This will be useful to know later. */
11683 240 : if (as->type == AS_ASSUMED_SIZE)
11684 72 : as->cp_was_assumed = true;
11685 168 : else if (as->type == AS_ASSUMED_SHAPE)
11686 : {
11687 0 : gfc_error ("Cray Pointee at %C cannot be assumed shape array");
11688 0 : return MATCH_ERROR;
11689 : }
11690 : return MATCH_YES;
11691 : }
11692 :
11693 :
11694 : /* Match the enum definition statement, here we are trying to match
11695 : the first line of enum definition statement.
11696 : Returns MATCH_YES if match is found. */
11697 :
11698 : match
11699 158 : gfc_match_enum (void)
11700 : {
11701 158 : match m;
11702 :
11703 158 : m = gfc_match_eos ();
11704 158 : if (m != MATCH_YES)
11705 : return m;
11706 :
11707 158 : if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C"))
11708 0 : return MATCH_ERROR;
11709 :
11710 : return MATCH_YES;
11711 : }
11712 :
11713 :
11714 : /* Returns an initializer whose value is one higher than the value of the
11715 : LAST_INITIALIZER argument. If the argument is NULL, the
11716 : initializers value will be set to zero. The initializer's kind
11717 : will be set to gfc_c_int_kind.
11718 :
11719 : If -fshort-enums is given, the appropriate kind will be selected
11720 : later after all enumerators have been parsed. A warning is issued
11721 : here if an initializer exceeds gfc_c_int_kind. */
11722 :
11723 : static gfc_expr *
11724 377 : enum_initializer (gfc_expr *last_initializer, locus where)
11725 : {
11726 377 : gfc_expr *result;
11727 377 : result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where);
11728 :
11729 377 : mpz_init (result->value.integer);
11730 :
11731 377 : if (last_initializer != NULL)
11732 : {
11733 266 : mpz_add_ui (result->value.integer, last_initializer->value.integer, 1);
11734 266 : result->where = last_initializer->where;
11735 :
11736 266 : if (gfc_check_integer_range (result->value.integer,
11737 : gfc_c_int_kind) != ARITH_OK)
11738 : {
11739 0 : gfc_error ("Enumerator exceeds the C integer type at %C");
11740 0 : return NULL;
11741 : }
11742 : }
11743 : else
11744 : {
11745 : /* Control comes here, if it's the very first enumerator and no
11746 : initializer has been given. It will be initialized to zero. */
11747 111 : mpz_set_si (result->value.integer, 0);
11748 : }
11749 :
11750 : return result;
11751 : }
11752 :
11753 :
11754 : /* Match a variable name with an optional initializer. When this
11755 : subroutine is called, a variable is expected to be parsed next.
11756 : Depending on what is happening at the moment, updates either the
11757 : symbol table or the current interface. */
11758 :
11759 : static match
11760 549 : enumerator_decl (void)
11761 : {
11762 549 : char name[GFC_MAX_SYMBOL_LEN + 1];
11763 549 : gfc_expr *initializer;
11764 549 : gfc_array_spec *as = NULL;
11765 549 : gfc_charlen *saved_cl_list;
11766 549 : gfc_symbol *sym;
11767 549 : locus var_locus;
11768 549 : match m;
11769 549 : bool t;
11770 549 : locus old_locus;
11771 :
11772 549 : initializer = NULL;
11773 549 : saved_cl_list = gfc_current_ns->cl_list;
11774 549 : old_locus = gfc_current_locus;
11775 :
11776 : /* When we get here, we've just matched a list of attributes and
11777 : maybe a type and a double colon. The next thing we expect to see
11778 : is the name of the symbol. */
11779 549 : m = gfc_match_name (name);
11780 549 : if (m != MATCH_YES)
11781 1 : goto cleanup;
11782 :
11783 548 : var_locus = gfc_current_locus;
11784 :
11785 : /* OK, we've successfully matched the declaration. Now put the
11786 : symbol in the current namespace. If we fail to create the symbol,
11787 : bail out. */
11788 548 : if (!build_sym (name, 1, NULL, false, &as, &var_locus))
11789 : {
11790 1 : m = MATCH_ERROR;
11791 1 : goto cleanup;
11792 : }
11793 :
11794 : /* The double colon must be present in order to have initializers.
11795 : Otherwise the statement is ambiguous with an assignment statement. */
11796 547 : if (colon_seen)
11797 : {
11798 471 : if (gfc_match_char ('=') == MATCH_YES)
11799 : {
11800 170 : m = gfc_match_init_expr (&initializer);
11801 170 : if (m == MATCH_NO)
11802 : {
11803 0 : gfc_error ("Expected an initialization expression at %C");
11804 0 : m = MATCH_ERROR;
11805 : }
11806 :
11807 170 : if (m != MATCH_YES)
11808 2 : goto cleanup;
11809 : }
11810 : }
11811 :
11812 : /* If we do not have an initializer, the initialization value of the
11813 : previous enumerator (stored in last_initializer) is incremented
11814 : by 1 and is used to initialize the current enumerator. */
11815 545 : if (initializer == NULL)
11816 377 : initializer = enum_initializer (last_initializer, old_locus);
11817 :
11818 545 : if (initializer == NULL || initializer->ts.type != BT_INTEGER)
11819 : {
11820 2 : gfc_error ("ENUMERATOR %L not initialized with integer expression",
11821 : &var_locus);
11822 2 : m = MATCH_ERROR;
11823 2 : goto cleanup;
11824 : }
11825 :
11826 : /* Store this current initializer, for the next enumerator variable
11827 : to be parsed. add_init_expr_to_sym() zeros initializer, so we
11828 : use last_initializer below. */
11829 543 : last_initializer = initializer;
11830 543 : t = add_init_expr_to_sym (name, &initializer, &var_locus,
11831 : saved_cl_list);
11832 :
11833 : /* Maintain enumerator history. */
11834 543 : gfc_find_symbol (name, NULL, 0, &sym);
11835 543 : create_enum_history (sym, last_initializer);
11836 :
11837 543 : return (t) ? MATCH_YES : MATCH_ERROR;
11838 :
11839 6 : cleanup:
11840 : /* Free stuff up and return. */
11841 6 : gfc_free_expr (initializer);
11842 :
11843 6 : return m;
11844 : }
11845 :
11846 :
11847 : /* Match the enumerator definition statement. */
11848 :
11849 : match
11850 821426 : gfc_match_enumerator_def (void)
11851 : {
11852 821426 : match m;
11853 821426 : bool t;
11854 :
11855 821426 : gfc_clear_ts (¤t_ts);
11856 :
11857 821426 : m = gfc_match (" enumerator");
11858 821426 : if (m != MATCH_YES)
11859 : return m;
11860 :
11861 269 : m = gfc_match (" :: ");
11862 269 : if (m == MATCH_ERROR)
11863 : return m;
11864 :
11865 269 : colon_seen = (m == MATCH_YES);
11866 :
11867 269 : if (gfc_current_state () != COMP_ENUM)
11868 : {
11869 4 : gfc_error ("ENUM definition statement expected before %C");
11870 4 : gfc_free_enum_history ();
11871 4 : return MATCH_ERROR;
11872 : }
11873 :
11874 265 : (¤t_ts)->type = BT_INTEGER;
11875 265 : (¤t_ts)->kind = gfc_c_int_kind;
11876 :
11877 265 : gfc_clear_attr (¤t_attr);
11878 265 : t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL);
11879 265 : if (!t)
11880 : {
11881 0 : m = MATCH_ERROR;
11882 0 : goto cleanup;
11883 : }
11884 :
11885 549 : for (;;)
11886 : {
11887 549 : m = enumerator_decl ();
11888 549 : if (m == MATCH_ERROR)
11889 : {
11890 6 : gfc_free_enum_history ();
11891 6 : goto cleanup;
11892 : }
11893 543 : if (m == MATCH_NO)
11894 : break;
11895 :
11896 542 : if (gfc_match_eos () == MATCH_YES)
11897 256 : goto cleanup;
11898 286 : if (gfc_match_char (',') != MATCH_YES)
11899 : break;
11900 : }
11901 :
11902 3 : if (gfc_current_state () == COMP_ENUM)
11903 : {
11904 3 : gfc_free_enum_history ();
11905 3 : gfc_error ("Syntax error in ENUMERATOR definition at %C");
11906 3 : m = MATCH_ERROR;
11907 : }
11908 :
11909 0 : cleanup:
11910 265 : gfc_free_array_spec (current_as);
11911 265 : current_as = NULL;
11912 265 : return m;
11913 :
11914 : }
11915 :
11916 :
11917 : /* Match binding attributes. */
11918 :
11919 : static match
11920 4744 : match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc)
11921 : {
11922 4744 : bool found_passing = false;
11923 4744 : bool seen_ptr = false;
11924 4744 : match m = MATCH_YES;
11925 :
11926 : /* Initialize to defaults. Do so even before the MATCH_NO check so that in
11927 : this case the defaults are in there. */
11928 4744 : ba->access = ACCESS_UNKNOWN;
11929 4744 : ba->pass_arg = NULL;
11930 4744 : ba->pass_arg_num = 0;
11931 4744 : ba->nopass = 0;
11932 4744 : ba->non_overridable = 0;
11933 4744 : ba->deferred = 0;
11934 4744 : ba->ppc = ppc;
11935 :
11936 : /* If we find a comma, we believe there are binding attributes. */
11937 4744 : m = gfc_match_char (',');
11938 4744 : if (m == MATCH_NO)
11939 2482 : goto done;
11940 :
11941 2817 : do
11942 : {
11943 : /* Access specifier. */
11944 :
11945 2817 : m = gfc_match (" public");
11946 2817 : if (m == MATCH_ERROR)
11947 0 : goto error;
11948 2817 : if (m == MATCH_YES)
11949 : {
11950 250 : if (ba->access != ACCESS_UNKNOWN)
11951 : {
11952 0 : gfc_error ("Duplicate access-specifier at %C");
11953 0 : goto error;
11954 : }
11955 :
11956 250 : ba->access = ACCESS_PUBLIC;
11957 250 : continue;
11958 : }
11959 :
11960 2567 : m = gfc_match (" private");
11961 2567 : if (m == MATCH_ERROR)
11962 0 : goto error;
11963 2567 : if (m == MATCH_YES)
11964 : {
11965 181 : if (ba->access != ACCESS_UNKNOWN)
11966 : {
11967 1 : gfc_error ("Duplicate access-specifier at %C");
11968 1 : goto error;
11969 : }
11970 :
11971 180 : ba->access = ACCESS_PRIVATE;
11972 180 : continue;
11973 : }
11974 :
11975 : /* If inside GENERIC, the following is not allowed. */
11976 2386 : if (!generic)
11977 : {
11978 :
11979 : /* NOPASS flag. */
11980 2385 : m = gfc_match (" nopass");
11981 2385 : if (m == MATCH_ERROR)
11982 0 : goto error;
11983 2385 : if (m == MATCH_YES)
11984 : {
11985 725 : if (found_passing)
11986 : {
11987 1 : gfc_error ("Binding attributes already specify passing,"
11988 : " illegal NOPASS at %C");
11989 1 : goto error;
11990 : }
11991 :
11992 724 : found_passing = true;
11993 724 : ba->nopass = 1;
11994 724 : continue;
11995 : }
11996 :
11997 : /* PASS possibly including argument. */
11998 1660 : m = gfc_match (" pass");
11999 1660 : if (m == MATCH_ERROR)
12000 0 : goto error;
12001 1660 : if (m == MATCH_YES)
12002 : {
12003 901 : char arg[GFC_MAX_SYMBOL_LEN + 1];
12004 :
12005 901 : if (found_passing)
12006 : {
12007 2 : gfc_error ("Binding attributes already specify passing,"
12008 : " illegal PASS at %C");
12009 2 : goto error;
12010 : }
12011 :
12012 899 : m = gfc_match (" ( %n )", arg);
12013 899 : if (m == MATCH_ERROR)
12014 0 : goto error;
12015 899 : if (m == MATCH_YES)
12016 490 : ba->pass_arg = gfc_get_string ("%s", arg);
12017 899 : gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL));
12018 :
12019 899 : found_passing = true;
12020 899 : ba->nopass = 0;
12021 899 : continue;
12022 899 : }
12023 :
12024 759 : if (ppc)
12025 : {
12026 : /* POINTER flag. */
12027 437 : m = gfc_match (" pointer");
12028 437 : if (m == MATCH_ERROR)
12029 0 : goto error;
12030 437 : if (m == MATCH_YES)
12031 : {
12032 437 : if (seen_ptr)
12033 : {
12034 1 : gfc_error ("Duplicate POINTER attribute at %C");
12035 1 : goto error;
12036 : }
12037 :
12038 436 : seen_ptr = true;
12039 436 : continue;
12040 : }
12041 : }
12042 : else
12043 : {
12044 : /* NON_OVERRIDABLE flag. */
12045 322 : m = gfc_match (" non_overridable");
12046 322 : if (m == MATCH_ERROR)
12047 0 : goto error;
12048 322 : if (m == MATCH_YES)
12049 : {
12050 62 : if (ba->non_overridable)
12051 : {
12052 1 : gfc_error ("Duplicate NON_OVERRIDABLE at %C");
12053 1 : goto error;
12054 : }
12055 :
12056 61 : ba->non_overridable = 1;
12057 61 : continue;
12058 : }
12059 :
12060 : /* DEFERRED flag. */
12061 260 : m = gfc_match (" deferred");
12062 260 : if (m == MATCH_ERROR)
12063 0 : goto error;
12064 260 : if (m == MATCH_YES)
12065 : {
12066 260 : if (ba->deferred)
12067 : {
12068 1 : gfc_error ("Duplicate DEFERRED at %C");
12069 1 : goto error;
12070 : }
12071 :
12072 259 : ba->deferred = 1;
12073 259 : continue;
12074 : }
12075 : }
12076 :
12077 : }
12078 :
12079 : /* Nothing matching found. */
12080 1 : if (generic)
12081 1 : gfc_error ("Expected access-specifier at %C");
12082 : else
12083 0 : gfc_error ("Expected binding attribute at %C");
12084 1 : goto error;
12085 : }
12086 2809 : while (gfc_match_char (',') == MATCH_YES);
12087 :
12088 : /* NON_OVERRIDABLE and DEFERRED exclude themselves. */
12089 2254 : if (ba->non_overridable && ba->deferred)
12090 : {
12091 1 : gfc_error ("NON_OVERRIDABLE and DEFERRED cannot both appear at %C");
12092 1 : goto error;
12093 : }
12094 :
12095 : m = MATCH_YES;
12096 :
12097 4735 : done:
12098 4735 : if (ba->access == ACCESS_UNKNOWN)
12099 4306 : ba->access = ppc ? gfc_current_block()->component_access
12100 : : gfc_typebound_default_access;
12101 :
12102 4735 : if (ppc && !seen_ptr)
12103 : {
12104 2 : gfc_error ("POINTER attribute is required for procedure pointer component"
12105 : " at %C");
12106 2 : goto error;
12107 : }
12108 :
12109 : return m;
12110 :
12111 4744 : error:
12112 : return MATCH_ERROR;
12113 : }
12114 :
12115 :
12116 : /* Match a PROCEDURE specific binding inside a derived type. */
12117 :
12118 : static match
12119 3254 : match_procedure_in_type (void)
12120 : {
12121 3254 : char name[GFC_MAX_SYMBOL_LEN + 1];
12122 3254 : char target_buf[GFC_MAX_SYMBOL_LEN + 1];
12123 3254 : char* target = NULL, *ifc = NULL;
12124 3254 : gfc_typebound_proc tb;
12125 3254 : bool seen_colons;
12126 3254 : bool seen_attrs;
12127 3254 : match m;
12128 3254 : gfc_symtree* stree;
12129 3254 : gfc_namespace* ns;
12130 3254 : gfc_symbol* block;
12131 3254 : int num;
12132 :
12133 : /* Check current state. */
12134 3254 : gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS);
12135 3254 : block = gfc_state_stack->previous->sym;
12136 3254 : gcc_assert (block);
12137 :
12138 : /* Try to match PROCEDURE(interface). */
12139 3254 : if (gfc_match (" (") == MATCH_YES)
12140 : {
12141 261 : m = gfc_match_name (target_buf);
12142 261 : if (m == MATCH_ERROR)
12143 : return m;
12144 261 : if (m != MATCH_YES)
12145 : {
12146 1 : gfc_error ("Interface-name expected after %<(%> at %C");
12147 1 : return MATCH_ERROR;
12148 : }
12149 :
12150 260 : if (gfc_match (" )") != MATCH_YES)
12151 : {
12152 1 : gfc_error ("%<)%> expected at %C");
12153 1 : return MATCH_ERROR;
12154 : }
12155 :
12156 : ifc = target_buf;
12157 : }
12158 :
12159 : /* Construct the data structure. */
12160 3252 : memset (&tb, 0, sizeof (tb));
12161 3252 : tb.where = gfc_current_locus;
12162 :
12163 : /* Match binding attributes. */
12164 3252 : m = match_binding_attributes (&tb, false, false);
12165 3252 : if (m == MATCH_ERROR)
12166 : return m;
12167 3245 : seen_attrs = (m == MATCH_YES);
12168 :
12169 : /* Check that attribute DEFERRED is given if an interface is specified. */
12170 3245 : if (tb.deferred && !ifc)
12171 : {
12172 1 : gfc_error ("Interface must be specified for DEFERRED binding at %C");
12173 1 : return MATCH_ERROR;
12174 : }
12175 3244 : if (ifc && !tb.deferred)
12176 : {
12177 1 : gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED");
12178 1 : return MATCH_ERROR;
12179 : }
12180 :
12181 : /* Match the colons. */
12182 3243 : m = gfc_match (" ::");
12183 3243 : if (m == MATCH_ERROR)
12184 : return m;
12185 3243 : seen_colons = (m == MATCH_YES);
12186 3243 : if (seen_attrs && !seen_colons)
12187 : {
12188 4 : gfc_error ("Expected %<::%> after binding-attributes at %C");
12189 4 : return MATCH_ERROR;
12190 : }
12191 :
12192 : /* Match the binding names. */
12193 19 : for(num=1;;num++)
12194 : {
12195 3258 : m = gfc_match_name (name);
12196 3258 : if (m == MATCH_ERROR)
12197 : return m;
12198 3258 : if (m == MATCH_NO)
12199 : {
12200 5 : gfc_error ("Expected binding name at %C");
12201 5 : return MATCH_ERROR;
12202 : }
12203 :
12204 3253 : if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C"))
12205 : return MATCH_ERROR;
12206 :
12207 : /* Try to match the '=> target', if it's there. */
12208 3252 : target = ifc;
12209 3252 : m = gfc_match (" =>");
12210 3252 : if (m == MATCH_ERROR)
12211 : return m;
12212 3252 : if (m == MATCH_YES)
12213 : {
12214 1250 : if (tb.deferred)
12215 : {
12216 1 : gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C");
12217 1 : return MATCH_ERROR;
12218 : }
12219 :
12220 1249 : if (!seen_colons)
12221 : {
12222 1 : gfc_error ("%<::%> needed in PROCEDURE binding with explicit target"
12223 : " at %C");
12224 1 : return MATCH_ERROR;
12225 : }
12226 :
12227 1248 : m = gfc_match_name (target_buf);
12228 1248 : if (m == MATCH_ERROR)
12229 : return m;
12230 1248 : if (m == MATCH_NO)
12231 : {
12232 2 : gfc_error ("Expected binding target after %<=>%> at %C");
12233 2 : return MATCH_ERROR;
12234 : }
12235 : target = target_buf;
12236 : }
12237 :
12238 : /* If no target was found, it has the same name as the binding. */
12239 2002 : if (!target)
12240 1747 : target = name;
12241 :
12242 : /* Get the namespace to insert the symbols into. */
12243 3248 : ns = block->f2k_derived;
12244 3248 : gcc_assert (ns);
12245 :
12246 : /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */
12247 3248 : if (tb.deferred && !block->attr.abstract)
12248 : {
12249 1 : gfc_error ("Type %qs containing DEFERRED binding at %C "
12250 : "is not ABSTRACT", block->name);
12251 1 : return MATCH_ERROR;
12252 : }
12253 :
12254 : /* See if we already have a binding with this name in the symtree which
12255 : would be an error. If a GENERIC already targeted this binding, it may
12256 : be already there but then typebound is still NULL. */
12257 3247 : stree = gfc_find_symtree (ns->tb_sym_root, name);
12258 3247 : if (stree && stree->n.tb)
12259 : {
12260 2 : gfc_error ("There is already a procedure with binding name %qs for "
12261 : "the derived type %qs at %C", name, block->name);
12262 2 : return MATCH_ERROR;
12263 : }
12264 :
12265 : /* Insert it and set attributes. */
12266 :
12267 3126 : if (!stree)
12268 : {
12269 3126 : stree = gfc_new_symtree (&ns->tb_sym_root, name);
12270 3126 : gcc_assert (stree);
12271 : }
12272 3245 : stree->n.tb = gfc_get_typebound_proc (&tb);
12273 :
12274 3245 : if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific,
12275 : false))
12276 : return MATCH_ERROR;
12277 3245 : gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym);
12278 3245 : gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE,
12279 3245 : target, &stree->n.tb->u.specific->n.sym->declared_at);
12280 :
12281 3245 : if (gfc_match_eos () == MATCH_YES)
12282 : return MATCH_YES;
12283 20 : if (gfc_match_char (',') != MATCH_YES)
12284 1 : goto syntax;
12285 : }
12286 :
12287 1 : syntax:
12288 1 : gfc_error ("Syntax error in PROCEDURE statement at %C");
12289 1 : return MATCH_ERROR;
12290 : }
12291 :
12292 :
12293 : /* Match a GENERIC statement.
12294 : F2018 15.4.3.3 GENERIC statement
12295 :
12296 : A GENERIC statement specifies a generic identifier for one or more specific
12297 : procedures, in the same way as a generic interface block that does not contain
12298 : interface bodies.
12299 :
12300 : R1510 generic-stmt is:
12301 : GENERIC [ , access-spec ] :: generic-spec => specific-procedure-list
12302 :
12303 : C1510 (R1510) A specific-procedure in a GENERIC statement shall not specify a
12304 : procedure that was specified previously in any accessible interface with the
12305 : same generic identifier.
12306 :
12307 : If access-spec appears, it specifies the accessibility (8.5.2) of generic-spec.
12308 :
12309 : For GENERIC statements outside of a derived type, use is made of the existing,
12310 : typebound matching functions to obtain access-spec and generic-spec. After
12311 : this the standard INTERFACE machinery is used. */
12312 :
12313 : static match
12314 100 : match_generic_stmt (void)
12315 : {
12316 100 : char name[GFC_MAX_SYMBOL_LEN + 1];
12317 : /* Allow space for OPERATOR(...). */
12318 100 : char generic_spec_name[GFC_MAX_SYMBOL_LEN + 16];
12319 : /* Generics other than uops */
12320 100 : gfc_symbol* generic_spec = NULL;
12321 : /* Generic uops */
12322 100 : gfc_user_op *generic_uop = NULL;
12323 : /* For the matching calls */
12324 100 : gfc_typebound_proc tbattr;
12325 100 : gfc_namespace* ns = gfc_current_ns;
12326 100 : interface_type op_type;
12327 100 : gfc_intrinsic_op op;
12328 100 : match m;
12329 100 : gfc_symtree* st;
12330 : /* The specific-procedure-list */
12331 100 : gfc_interface *generic = NULL;
12332 : /* The head of the specific-procedure-list */
12333 100 : gfc_interface **generic_tail = NULL;
12334 :
12335 100 : memset (&tbattr, 0, sizeof (tbattr));
12336 100 : tbattr.where = gfc_current_locus;
12337 :
12338 : /* See if we get an access-specifier. */
12339 100 : m = match_binding_attributes (&tbattr, true, false);
12340 100 : tbattr.where = gfc_current_locus;
12341 100 : if (m == MATCH_ERROR)
12342 0 : goto error;
12343 :
12344 : /* Now the colons, those are required. */
12345 100 : if (gfc_match (" ::") != MATCH_YES)
12346 : {
12347 0 : gfc_error ("Expected %<::%> at %C");
12348 0 : goto error;
12349 : }
12350 :
12351 : /* Match the generic-spec name; depending on type (operator / generic) format
12352 : it for future error messages in 'generic_spec_name'. */
12353 100 : m = gfc_match_generic_spec (&op_type, name, &op);
12354 100 : if (m == MATCH_ERROR)
12355 : return MATCH_ERROR;
12356 100 : if (m == MATCH_NO)
12357 : {
12358 0 : gfc_error ("Expected generic name or operator descriptor at %C");
12359 0 : goto error;
12360 : }
12361 :
12362 100 : switch (op_type)
12363 : {
12364 63 : case INTERFACE_GENERIC:
12365 63 : case INTERFACE_DTIO:
12366 63 : snprintf (generic_spec_name, sizeof (generic_spec_name), "%s", name);
12367 63 : break;
12368 :
12369 22 : case INTERFACE_USER_OP:
12370 22 : snprintf (generic_spec_name, sizeof (generic_spec_name), "OPERATOR(.%s.)", name);
12371 22 : break;
12372 :
12373 13 : case INTERFACE_INTRINSIC_OP:
12374 13 : snprintf (generic_spec_name, sizeof (generic_spec_name), "OPERATOR(%s)",
12375 : gfc_op2string (op));
12376 13 : break;
12377 :
12378 2 : case INTERFACE_NAMELESS:
12379 2 : gfc_error ("Malformed GENERIC statement at %C");
12380 2 : goto error;
12381 0 : break;
12382 :
12383 0 : default:
12384 0 : gcc_unreachable ();
12385 : }
12386 :
12387 : /* Match the required =>. */
12388 98 : if (gfc_match (" =>") != MATCH_YES)
12389 : {
12390 1 : gfc_error ("Expected %<=>%> at %C");
12391 1 : goto error;
12392 : }
12393 :
12394 :
12395 97 : if (gfc_current_state () != COMP_MODULE && tbattr.access != ACCESS_UNKNOWN)
12396 : {
12397 1 : gfc_error ("The access specification at %L not in a module",
12398 : &tbattr.where);
12399 1 : goto error;
12400 : }
12401 :
12402 : /* Try to find existing generic-spec with this name for this operator;
12403 : if there is something, check that it is another generic-spec and then
12404 : extend it rather than building a new symbol. Otherwise, create a new
12405 : one with the right attributes. */
12406 :
12407 96 : switch (op_type)
12408 : {
12409 61 : case INTERFACE_DTIO:
12410 61 : case INTERFACE_GENERIC:
12411 61 : st = gfc_find_symtree (ns->sym_root, name);
12412 61 : generic_spec = st ? st->n.sym : NULL;
12413 61 : if (generic_spec)
12414 : {
12415 25 : if (generic_spec->attr.flavor != FL_PROCEDURE
12416 11 : && generic_spec->attr.flavor != FL_UNKNOWN)
12417 : {
12418 1 : gfc_error ("The generic-spec name %qs at %C clashes with the "
12419 : "name of an entity declared at %L that is not a "
12420 : "procedure", name, &generic_spec->declared_at);
12421 1 : goto error;
12422 : }
12423 :
12424 24 : if (op_type == INTERFACE_GENERIC && !generic_spec->attr.generic
12425 10 : && generic_spec->attr.flavor != FL_UNKNOWN)
12426 : {
12427 0 : gfc_error ("There's already a non-generic procedure with "
12428 : "name %qs at %C", generic_spec->name);
12429 0 : goto error;
12430 : }
12431 :
12432 24 : if (tbattr.access != ACCESS_UNKNOWN)
12433 : {
12434 2 : if (generic_spec->attr.access != tbattr.access)
12435 : {
12436 1 : gfc_error ("The access specification at %L conflicts with "
12437 : "that already given to %qs", &tbattr.where,
12438 : generic_spec->name);
12439 1 : goto error;
12440 : }
12441 : else
12442 : {
12443 1 : gfc_error ("The access specification at %L repeats that "
12444 : "already given to %qs", &tbattr.where,
12445 : generic_spec->name);
12446 1 : goto error;
12447 : }
12448 : }
12449 :
12450 22 : if (generic_spec->ts.type != BT_UNKNOWN)
12451 : {
12452 1 : gfc_error ("The generic-spec in the generic statement at %C "
12453 : "has a type from the declaration at %L",
12454 : &generic_spec->declared_at);
12455 1 : goto error;
12456 : }
12457 : }
12458 :
12459 : /* Now create the generic_spec if it doesn't already exist and provide
12460 : is with the appropriate attributes. */
12461 57 : if (!generic_spec || generic_spec->attr.flavor != FL_PROCEDURE)
12462 : {
12463 45 : if (!generic_spec)
12464 : {
12465 36 : gfc_get_symbol (name, ns, &generic_spec, &gfc_current_locus);
12466 36 : gfc_set_sym_referenced (generic_spec);
12467 36 : generic_spec->attr.access = tbattr.access;
12468 : }
12469 9 : else if (generic_spec->attr.access == ACCESS_UNKNOWN)
12470 0 : generic_spec->attr.access = tbattr.access;
12471 45 : generic_spec->refs++;
12472 45 : generic_spec->attr.generic = 1;
12473 45 : generic_spec->attr.flavor = FL_PROCEDURE;
12474 :
12475 45 : generic_spec->declared_at = gfc_current_locus;
12476 : }
12477 :
12478 : /* Prepare to add the specific procedures. */
12479 57 : generic = generic_spec->generic;
12480 57 : generic_tail = &generic_spec->generic;
12481 57 : break;
12482 :
12483 22 : case INTERFACE_USER_OP:
12484 22 : st = gfc_find_symtree (ns->uop_root, name);
12485 22 : generic_uop = st ? st->n.uop : NULL;
12486 2 : if (generic_uop)
12487 : {
12488 2 : if (generic_uop->access != ACCESS_UNKNOWN
12489 2 : && tbattr.access != ACCESS_UNKNOWN)
12490 : {
12491 2 : if (generic_uop->access != tbattr.access)
12492 : {
12493 1 : gfc_error ("The user operator at %L must have the same "
12494 : "access specification as already defined user "
12495 : "operator %qs", &tbattr.where, generic_spec_name);
12496 1 : goto error;
12497 : }
12498 : else
12499 : {
12500 1 : gfc_error ("The user operator at %L repeats the access "
12501 : "specification of already defined user operator " "%qs", &tbattr.where, generic_spec_name);
12502 1 : goto error;
12503 : }
12504 : }
12505 0 : else if (generic_uop->access == ACCESS_UNKNOWN)
12506 0 : generic_uop->access = tbattr.access;
12507 : }
12508 : else
12509 : {
12510 20 : generic_uop = gfc_get_uop (name);
12511 20 : generic_uop->access = tbattr.access;
12512 : }
12513 :
12514 : /* Prepare to add the specific procedures. */
12515 20 : generic = generic_uop->op;
12516 20 : generic_tail = &generic_uop->op;
12517 20 : break;
12518 :
12519 13 : case INTERFACE_INTRINSIC_OP:
12520 13 : generic = ns->op[op];
12521 13 : generic_tail = &ns->op[op];
12522 13 : break;
12523 :
12524 0 : default:
12525 0 : gcc_unreachable ();
12526 : }
12527 :
12528 : /* Now, match all following names in the specific-procedure-list. */
12529 154 : do
12530 : {
12531 154 : m = gfc_match_name (name);
12532 154 : if (m == MATCH_ERROR)
12533 0 : goto error;
12534 154 : if (m == MATCH_NO)
12535 : {
12536 0 : gfc_error ("Expected specific procedure name at %C");
12537 0 : goto error;
12538 : }
12539 :
12540 154 : if (op_type == INTERFACE_GENERIC
12541 95 : && !strcmp (generic_spec->name, name))
12542 : {
12543 2 : gfc_error ("The name %qs of the specific procedure at %C conflicts "
12544 : "with that of the generic-spec", name);
12545 2 : goto error;
12546 : }
12547 :
12548 152 : generic = *generic_tail;
12549 242 : for (; generic; generic = generic->next)
12550 : {
12551 90 : if (!strcmp (generic->sym->name, name))
12552 : {
12553 0 : gfc_error ("%qs already defined as a specific procedure for the"
12554 : " generic %qs at %C", name, generic_spec->name);
12555 0 : goto error;
12556 : }
12557 : }
12558 :
12559 152 : gfc_find_sym_tree (name, ns, 1, &st);
12560 152 : if (!st)
12561 : {
12562 : /* This might be a procedure that has not yet been parsed. If
12563 : so gfc_fixup_sibling_symbols will replace this symbol with
12564 : that of the procedure. */
12565 75 : gfc_get_sym_tree (name, ns, &st, false);
12566 75 : st->n.sym->refs++;
12567 : }
12568 :
12569 152 : generic = gfc_get_interface();
12570 152 : generic->next = *generic_tail;
12571 152 : *generic_tail = generic;
12572 152 : generic->where = gfc_current_locus;
12573 152 : generic->sym = st->n.sym;
12574 : }
12575 152 : while (gfc_match (" ,") == MATCH_YES);
12576 :
12577 88 : if (gfc_match_eos () != MATCH_YES)
12578 : {
12579 0 : gfc_error ("Junk after GENERIC statement at %C");
12580 0 : goto error;
12581 : }
12582 :
12583 88 : gfc_commit_symbols ();
12584 88 : return MATCH_YES;
12585 :
12586 100 : error:
12587 : return MATCH_ERROR;
12588 : }
12589 :
12590 :
12591 : /* Match a GENERIC procedure binding inside a derived type. */
12592 :
12593 : static match
12594 954 : match_typebound_generic (void)
12595 : {
12596 954 : char name[GFC_MAX_SYMBOL_LEN + 1];
12597 954 : char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */
12598 954 : gfc_symbol* block;
12599 954 : gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */
12600 954 : gfc_typebound_proc* tb;
12601 954 : gfc_namespace* ns;
12602 954 : interface_type op_type;
12603 954 : gfc_intrinsic_op op;
12604 954 : match m;
12605 :
12606 : /* Check current state. */
12607 954 : if (gfc_current_state () == COMP_DERIVED)
12608 : {
12609 0 : gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS");
12610 0 : return MATCH_ERROR;
12611 : }
12612 954 : if (gfc_current_state () != COMP_DERIVED_CONTAINS)
12613 : return MATCH_NO;
12614 954 : block = gfc_state_stack->previous->sym;
12615 954 : ns = block->f2k_derived;
12616 954 : gcc_assert (block && ns);
12617 :
12618 954 : memset (&tbattr, 0, sizeof (tbattr));
12619 954 : tbattr.where = gfc_current_locus;
12620 :
12621 : /* See if we get an access-specifier. */
12622 954 : m = match_binding_attributes (&tbattr, true, false);
12623 954 : if (m == MATCH_ERROR)
12624 1 : goto error;
12625 :
12626 : /* Now the colons, those are required. */
12627 953 : if (gfc_match (" ::") != MATCH_YES)
12628 : {
12629 0 : gfc_error ("Expected %<::%> at %C");
12630 0 : goto error;
12631 : }
12632 :
12633 : /* Match the binding name; depending on type (operator / generic) format
12634 : it for future error messages into bind_name. */
12635 :
12636 953 : m = gfc_match_generic_spec (&op_type, name, &op);
12637 953 : if (m == MATCH_ERROR)
12638 : return MATCH_ERROR;
12639 953 : if (m == MATCH_NO)
12640 : {
12641 0 : gfc_error ("Expected generic name or operator descriptor at %C");
12642 0 : goto error;
12643 : }
12644 :
12645 953 : switch (op_type)
12646 : {
12647 470 : case INTERFACE_GENERIC:
12648 470 : case INTERFACE_DTIO:
12649 470 : snprintf (bind_name, sizeof (bind_name), "%s", name);
12650 470 : break;
12651 :
12652 47 : case INTERFACE_USER_OP:
12653 47 : snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name);
12654 47 : break;
12655 :
12656 435 : case INTERFACE_INTRINSIC_OP:
12657 435 : snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)",
12658 : gfc_op2string (op));
12659 435 : break;
12660 :
12661 1 : case INTERFACE_NAMELESS:
12662 1 : gfc_error ("Malformed GENERIC statement at %C");
12663 1 : goto error;
12664 0 : break;
12665 :
12666 0 : default:
12667 0 : gcc_unreachable ();
12668 : }
12669 :
12670 : /* Match the required =>. */
12671 952 : if (gfc_match (" =>") != MATCH_YES)
12672 : {
12673 0 : gfc_error ("Expected %<=>%> at %C");
12674 0 : goto error;
12675 : }
12676 :
12677 : /* Try to find existing GENERIC binding with this name / for this operator;
12678 : if there is something, check that it is another GENERIC and then extend
12679 : it rather than building a new node. Otherwise, create it and put it
12680 : at the right position. */
12681 :
12682 952 : switch (op_type)
12683 : {
12684 517 : case INTERFACE_DTIO:
12685 517 : case INTERFACE_USER_OP:
12686 517 : case INTERFACE_GENERIC:
12687 517 : {
12688 517 : const bool is_op = (op_type == INTERFACE_USER_OP);
12689 517 : gfc_symtree* st;
12690 :
12691 517 : st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name);
12692 517 : tb = st ? st->n.tb : NULL;
12693 : break;
12694 : }
12695 :
12696 435 : case INTERFACE_INTRINSIC_OP:
12697 435 : tb = ns->tb_op[op];
12698 435 : break;
12699 :
12700 0 : default:
12701 0 : gcc_unreachable ();
12702 : }
12703 :
12704 446 : if (tb)
12705 : {
12706 9 : if (!tb->is_generic)
12707 : {
12708 1 : gcc_assert (op_type == INTERFACE_GENERIC);
12709 1 : gfc_error ("There's already a non-generic procedure with binding name"
12710 : " %qs for the derived type %qs at %C",
12711 : bind_name, block->name);
12712 1 : goto error;
12713 : }
12714 :
12715 8 : if (tb->access != tbattr.access)
12716 : {
12717 2 : gfc_error ("Binding at %C must have the same access as already"
12718 : " defined binding %qs", bind_name);
12719 2 : goto error;
12720 : }
12721 : }
12722 : else
12723 : {
12724 943 : tb = gfc_get_typebound_proc (NULL);
12725 943 : tb->where = gfc_current_locus;
12726 943 : tb->access = tbattr.access;
12727 943 : tb->is_generic = 1;
12728 943 : tb->u.generic = NULL;
12729 :
12730 943 : switch (op_type)
12731 : {
12732 508 : case INTERFACE_DTIO:
12733 508 : case INTERFACE_GENERIC:
12734 508 : case INTERFACE_USER_OP:
12735 508 : {
12736 508 : const bool is_op = (op_type == INTERFACE_USER_OP);
12737 508 : gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root :
12738 : &ns->tb_sym_root, name);
12739 508 : gcc_assert (st);
12740 508 : st->n.tb = tb;
12741 :
12742 508 : break;
12743 : }
12744 :
12745 435 : case INTERFACE_INTRINSIC_OP:
12746 435 : ns->tb_op[op] = tb;
12747 435 : break;
12748 :
12749 0 : default:
12750 0 : gcc_unreachable ();
12751 : }
12752 : }
12753 :
12754 : /* Now, match all following names as specific targets. */
12755 1106 : do
12756 : {
12757 1106 : gfc_symtree* target_st;
12758 1106 : gfc_tbp_generic* target;
12759 :
12760 1106 : m = gfc_match_name (name);
12761 1106 : if (m == MATCH_ERROR)
12762 0 : goto error;
12763 1106 : if (m == MATCH_NO)
12764 : {
12765 1 : gfc_error ("Expected specific binding name at %C");
12766 1 : goto error;
12767 : }
12768 :
12769 1105 : target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name);
12770 :
12771 : /* See if this is a duplicate specification. */
12772 1340 : for (target = tb->u.generic; target; target = target->next)
12773 236 : if (target_st == target->specific_st)
12774 : {
12775 1 : gfc_error ("%qs already defined as specific binding for the"
12776 : " generic %qs at %C", name, bind_name);
12777 1 : goto error;
12778 : }
12779 :
12780 1104 : target = gfc_get_tbp_generic ();
12781 1104 : target->specific_st = target_st;
12782 1104 : target->specific = NULL;
12783 1104 : target->next = tb->u.generic;
12784 1104 : target->is_operator = ((op_type == INTERFACE_USER_OP)
12785 1104 : || (op_type == INTERFACE_INTRINSIC_OP));
12786 1104 : tb->u.generic = target;
12787 : }
12788 1104 : while (gfc_match (" ,") == MATCH_YES);
12789 :
12790 : /* Here should be the end. */
12791 947 : if (gfc_match_eos () != MATCH_YES)
12792 : {
12793 1 : gfc_error ("Junk after GENERIC binding at %C");
12794 1 : goto error;
12795 : }
12796 :
12797 : return MATCH_YES;
12798 :
12799 954 : error:
12800 : return MATCH_ERROR;
12801 : }
12802 :
12803 :
12804 : match
12805 1054 : gfc_match_generic ()
12806 : {
12807 1054 : if (gfc_option.allow_std & ~GFC_STD_OPT_F08
12808 1052 : && gfc_current_state () != COMP_DERIVED_CONTAINS)
12809 100 : return match_generic_stmt ();
12810 : else
12811 954 : return match_typebound_generic ();
12812 : }
12813 :
12814 :
12815 : /* Match a FINAL declaration inside a derived type. */
12816 :
12817 : match
12818 484 : gfc_match_final_decl (void)
12819 : {
12820 484 : char name[GFC_MAX_SYMBOL_LEN + 1];
12821 484 : gfc_symbol* sym;
12822 484 : match m;
12823 484 : gfc_namespace* module_ns;
12824 484 : bool first, last;
12825 484 : gfc_symbol* block;
12826 :
12827 484 : if (gfc_current_form == FORM_FREE)
12828 : {
12829 484 : char c = gfc_peek_ascii_char ();
12830 484 : if (!gfc_is_whitespace (c) && c != ':')
12831 : return MATCH_NO;
12832 : }
12833 :
12834 483 : if (gfc_state_stack->state != COMP_DERIVED_CONTAINS)
12835 : {
12836 1 : if (gfc_current_form == FORM_FIXED)
12837 : return MATCH_NO;
12838 :
12839 1 : gfc_error ("FINAL declaration at %C must be inside a derived type "
12840 : "CONTAINS section");
12841 1 : return MATCH_ERROR;
12842 : }
12843 :
12844 482 : block = gfc_state_stack->previous->sym;
12845 482 : gcc_assert (block);
12846 :
12847 482 : if (gfc_state_stack->previous->previous
12848 482 : && gfc_state_stack->previous->previous->state != COMP_MODULE
12849 6 : && gfc_state_stack->previous->previous->state != COMP_SUBMODULE)
12850 : {
12851 0 : gfc_error ("Derived type declaration with FINAL at %C must be in the"
12852 : " specification part of a MODULE");
12853 0 : return MATCH_ERROR;
12854 : }
12855 :
12856 482 : module_ns = gfc_current_ns;
12857 482 : gcc_assert (module_ns);
12858 482 : gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE);
12859 :
12860 : /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */
12861 482 : if (gfc_match (" ::") == MATCH_ERROR)
12862 : return MATCH_ERROR;
12863 :
12864 : /* Match the sequence of procedure names. */
12865 : first = true;
12866 : last = false;
12867 574 : do
12868 : {
12869 574 : gfc_finalizer* f;
12870 :
12871 574 : if (first && gfc_match_eos () == MATCH_YES)
12872 : {
12873 2 : gfc_error ("Empty FINAL at %C");
12874 2 : return MATCH_ERROR;
12875 : }
12876 :
12877 572 : m = gfc_match_name (name);
12878 572 : if (m == MATCH_NO)
12879 : {
12880 1 : gfc_error ("Expected module procedure name at %C");
12881 1 : return MATCH_ERROR;
12882 : }
12883 571 : else if (m != MATCH_YES)
12884 : return MATCH_ERROR;
12885 :
12886 571 : if (gfc_match_eos () == MATCH_YES)
12887 : last = true;
12888 93 : if (!last && gfc_match_char (',') != MATCH_YES)
12889 : {
12890 1 : gfc_error ("Expected %<,%> at %C");
12891 1 : return MATCH_ERROR;
12892 : }
12893 :
12894 570 : if (gfc_get_symbol (name, module_ns, &sym))
12895 : {
12896 0 : gfc_error ("Unknown procedure name %qs at %C", name);
12897 0 : return MATCH_ERROR;
12898 : }
12899 :
12900 : /* Mark the symbol as module procedure. */
12901 570 : if (sym->attr.proc != PROC_MODULE
12902 570 : && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL))
12903 : return MATCH_ERROR;
12904 :
12905 : /* Check if we already have this symbol in the list, this is an error. */
12906 769 : for (f = block->f2k_derived->finalizers; f; f = f->next)
12907 200 : if (f->proc_sym == sym)
12908 : {
12909 1 : gfc_error ("%qs at %C is already defined as FINAL procedure",
12910 : name);
12911 1 : return MATCH_ERROR;
12912 : }
12913 :
12914 : /* Add this symbol to the list of finalizers. */
12915 569 : gcc_assert (block->f2k_derived);
12916 569 : sym->refs++;
12917 569 : f = XCNEW (gfc_finalizer);
12918 569 : f->proc_sym = sym;
12919 569 : f->proc_tree = NULL;
12920 569 : f->where = gfc_current_locus;
12921 569 : f->next = block->f2k_derived->finalizers;
12922 569 : block->f2k_derived->finalizers = f;
12923 :
12924 569 : first = false;
12925 : }
12926 569 : while (!last);
12927 :
12928 : return MATCH_YES;
12929 : }
12930 :
12931 :
12932 : const ext_attr_t ext_attr_list[] = {
12933 : { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" },
12934 : { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" },
12935 : { "cdecl", EXT_ATTR_CDECL, "cdecl" },
12936 : { "stdcall", EXT_ATTR_STDCALL, "stdcall" },
12937 : { "fastcall", EXT_ATTR_FASTCALL, "fastcall" },
12938 : { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL },
12939 : { "deprecated", EXT_ATTR_DEPRECATED, NULL },
12940 : { "noinline", EXT_ATTR_NOINLINE, NULL },
12941 : { "noreturn", EXT_ATTR_NORETURN, NULL },
12942 : { "weak", EXT_ATTR_WEAK, NULL },
12943 : { "inline", EXT_ATTR_INLINE, NULL },
12944 : { "always_inline",EXT_ATTR_ALWAYS_INLINE,NULL },
12945 : { NULL, EXT_ATTR_LAST, NULL }
12946 : };
12947 :
12948 : /* Match a !GCC$ ATTRIBUTES statement of the form:
12949 : !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ...
12950 : When we come here, we have already matched the !GCC$ ATTRIBUTES string.
12951 :
12952 : TODO: We should support all GCC attributes using the same syntax for
12953 : the attribute list, i.e. the list in C
12954 : __attributes(( attribute-list ))
12955 : matches then
12956 : !GCC$ ATTRIBUTES attribute-list ::
12957 : Cf. c-parser.cc's c_parser_attributes; the data can then directly be
12958 : saved into a TREE.
12959 :
12960 : As there is absolutely no risk of confusion, we should never return
12961 : MATCH_NO. */
12962 : match
12963 2984 : gfc_match_gcc_attributes (void)
12964 : {
12965 2984 : symbol_attribute attr;
12966 2984 : char name[GFC_MAX_SYMBOL_LEN + 1];
12967 2984 : unsigned id;
12968 2984 : gfc_symbol *sym;
12969 2984 : match m;
12970 :
12971 2984 : gfc_clear_attr (&attr);
12972 2988 : for(;;)
12973 : {
12974 2986 : char ch;
12975 :
12976 2986 : if (gfc_match_name (name) != MATCH_YES)
12977 : return MATCH_ERROR;
12978 :
12979 18042 : for (id = 0; id < EXT_ATTR_LAST; id++)
12980 18042 : if (strcmp (name, ext_attr_list[id].name) == 0)
12981 : break;
12982 :
12983 2986 : if (id == EXT_ATTR_LAST)
12984 : {
12985 0 : gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C");
12986 0 : return MATCH_ERROR;
12987 : }
12988 :
12989 2986 : if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus))
12990 : return MATCH_ERROR;
12991 :
12992 2986 : gfc_gobble_whitespace ();
12993 2986 : ch = gfc_next_ascii_char ();
12994 2986 : if (ch == ':')
12995 : {
12996 : /* This is the successful exit condition for the loop. */
12997 2984 : if (gfc_next_ascii_char () == ':')
12998 : break;
12999 : }
13000 :
13001 2 : if (ch == ',')
13002 2 : continue;
13003 :
13004 0 : goto syntax;
13005 2 : }
13006 :
13007 2984 : if (gfc_match_eos () == MATCH_YES)
13008 0 : goto syntax;
13009 :
13010 2999 : for(;;)
13011 : {
13012 2999 : m = gfc_match_name (name);
13013 2999 : if (m != MATCH_YES)
13014 : return m;
13015 :
13016 2999 : if (find_special (name, &sym, true))
13017 : return MATCH_ERROR;
13018 :
13019 2999 : sym->attr.ext_attr |= attr.ext_attr;
13020 :
13021 : /* INLINE and ALWAYS_INLINE are incompatible with NOINLINE. In the
13022 : middle-end the DECL_UNINLINABLE flag set by NOINLINE always wins, so
13023 : the inline request would be silently ignored. Warn and drop it. */
13024 2999 : if (sym->attr.ext_attr & (1 << EXT_ATTR_NOINLINE))
13025 : {
13026 5 : if (sym->attr.ext_attr & (1 << EXT_ATTR_ALWAYS_INLINE))
13027 : {
13028 2 : gfc_warning (0, "Attribute %<ALWAYS_INLINE%> at %C is "
13029 : "incompatible with %<NOINLINE%> for %qs and will "
13030 : "be ignored", sym->name);
13031 2 : sym->attr.ext_attr &= ~(1 << EXT_ATTR_ALWAYS_INLINE);
13032 : }
13033 5 : if (sym->attr.ext_attr & (1 << EXT_ATTR_INLINE))
13034 : {
13035 2 : gfc_warning (0, "Attribute %<INLINE%> at %C is incompatible "
13036 : "with %<NOINLINE%> for %qs and will be ignored",
13037 : sym->name);
13038 2 : sym->attr.ext_attr &= ~(1 << EXT_ATTR_INLINE);
13039 : }
13040 : }
13041 :
13042 2999 : if (gfc_match_eos () == MATCH_YES)
13043 : break;
13044 :
13045 15 : if (gfc_match_char (',') != MATCH_YES)
13046 0 : goto syntax;
13047 : }
13048 :
13049 : return MATCH_YES;
13050 :
13051 0 : syntax:
13052 0 : gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C");
13053 0 : return MATCH_ERROR;
13054 : }
13055 :
13056 :
13057 : /* Match a !GCC$ UNROLL statement of the form:
13058 : !GCC$ UNROLL n
13059 :
13060 : The parameter n is the number of times we are supposed to unroll.
13061 :
13062 : When we come here, we have already matched the !GCC$ UNROLL string. */
13063 : match
13064 19 : gfc_match_gcc_unroll (void)
13065 : {
13066 19 : int value;
13067 :
13068 : /* FIXME: use gfc_match_small_literal_int instead, delete small_int */
13069 19 : if (gfc_match_small_int (&value) == MATCH_YES)
13070 : {
13071 19 : if (value < 0 || value > USHRT_MAX)
13072 : {
13073 2 : gfc_error ("%<GCC unroll%> directive requires a"
13074 : " non-negative integral constant"
13075 : " less than or equal to %u at %C",
13076 : USHRT_MAX
13077 : );
13078 2 : return MATCH_ERROR;
13079 : }
13080 17 : if (gfc_match_eos () == MATCH_YES)
13081 : {
13082 17 : directive_unroll = value == 0 ? 1 : value;
13083 17 : return MATCH_YES;
13084 : }
13085 : }
13086 :
13087 0 : gfc_error ("Syntax error in !GCC$ UNROLL directive at %C");
13088 0 : return MATCH_ERROR;
13089 : }
13090 :
13091 : /* Match a !GCC$ builtin (b) attributes simd flags if('target') form:
13092 :
13093 : The parameter b is name of a middle-end built-in.
13094 : FLAGS is optional and must be one of:
13095 : - (inbranch)
13096 : - (notinbranch)
13097 :
13098 : IF('target') is optional and TARGET is a name of a multilib ABI.
13099 :
13100 : When we come here, we have already matched the !GCC$ builtin string. */
13101 :
13102 : match
13103 3487245 : gfc_match_gcc_builtin (void)
13104 : {
13105 3487245 : char builtin[GFC_MAX_SYMBOL_LEN + 1];
13106 3487245 : char target[GFC_MAX_SYMBOL_LEN + 1];
13107 :
13108 3487245 : if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES)
13109 : return MATCH_ERROR;
13110 :
13111 3487245 : gfc_simd_clause clause = SIMD_NONE;
13112 3487245 : if (gfc_match (" ( notinbranch ) ") == MATCH_YES)
13113 : clause = SIMD_NOTINBRANCH;
13114 21 : else if (gfc_match (" ( inbranch ) ") == MATCH_YES)
13115 15 : clause = SIMD_INBRANCH;
13116 :
13117 3487245 : if (gfc_match (" if ( '%n' ) ", target) == MATCH_YES)
13118 : {
13119 3487215 : if (strcmp (target, "fastmath") == 0)
13120 : {
13121 0 : if (!fast_math_flags_set_p (&global_options))
13122 : return MATCH_YES;
13123 : }
13124 : else
13125 : {
13126 3487215 : const char *abi = targetm.get_multilib_abi_name ();
13127 3487215 : if (abi == NULL || strcmp (abi, target) != 0)
13128 : return MATCH_YES;
13129 : }
13130 : }
13131 :
13132 1721552 : if (gfc_vectorized_builtins == NULL)
13133 31886 : gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> ();
13134 :
13135 1721552 : char *r = XNEWVEC (char, strlen (builtin) + 32);
13136 1721552 : sprintf (r, "__builtin_%s", builtin);
13137 :
13138 1721552 : bool existed;
13139 1721552 : int &value = gfc_vectorized_builtins->get_or_insert (r, &existed);
13140 1721552 : value |= clause;
13141 1721552 : if (existed)
13142 23 : free (r);
13143 :
13144 : return MATCH_YES;
13145 : }
13146 :
13147 : /* Match an !GCC$ IVDEP statement.
13148 : When we come here, we have already matched the !GCC$ IVDEP string. */
13149 :
13150 : match
13151 3 : gfc_match_gcc_ivdep (void)
13152 : {
13153 3 : if (gfc_match_eos () == MATCH_YES)
13154 : {
13155 3 : directive_ivdep = true;
13156 3 : return MATCH_YES;
13157 : }
13158 :
13159 0 : gfc_error ("Syntax error in !GCC$ IVDEP directive at %C");
13160 0 : return MATCH_ERROR;
13161 : }
13162 :
13163 : /* Match an !GCC$ VECTOR statement.
13164 : When we come here, we have already matched the !GCC$ VECTOR string. */
13165 :
13166 : match
13167 3 : gfc_match_gcc_vector (void)
13168 : {
13169 3 : if (gfc_match_eos () == MATCH_YES)
13170 : {
13171 3 : directive_vector = true;
13172 3 : directive_novector = false;
13173 3 : return MATCH_YES;
13174 : }
13175 :
13176 0 : gfc_error ("Syntax error in !GCC$ VECTOR directive at %C");
13177 0 : return MATCH_ERROR;
13178 : }
13179 :
13180 : /* Match an !GCC$ NOVECTOR statement.
13181 : When we come here, we have already matched the !GCC$ NOVECTOR string. */
13182 :
13183 : match
13184 3 : gfc_match_gcc_novector (void)
13185 : {
13186 3 : if (gfc_match_eos () == MATCH_YES)
13187 : {
13188 3 : directive_novector = true;
13189 3 : directive_vector = false;
13190 3 : return MATCH_YES;
13191 : }
13192 :
13193 0 : gfc_error ("Syntax error in !GCC$ NOVECTOR directive at %C");
13194 0 : return MATCH_ERROR;
13195 : }
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