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 8317 : gfc_in_match_data (void)
163 : {
164 8317 : 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 545687 : gfc_free_data (gfc_data *p)
212 : {
213 545687 : gfc_data *q;
214 :
215 548261 : 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 545687 : }
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 9186367 : gfc_reject_data (gfc_namespace *ns)
244 : {
245 9186367 : gfc_data *d;
246 :
247 9186369 : 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 9186367 : }
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 28341 : match_intent_spec (void)
1080 : {
1081 :
1082 28341 : if (gfc_match (" ( in out )") == MATCH_YES)
1083 : return INTENT_INOUT;
1084 25142 : if (gfc_match (" ( in )") == MATCH_YES)
1085 : return INTENT_IN;
1086 3742 : 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 27905 : char_len_param_value (gfc_expr **expr, bool *deferred)
1099 : {
1100 27905 : match m;
1101 27905 : gfc_expr *p;
1102 :
1103 27905 : *expr = NULL;
1104 27905 : *deferred = false;
1105 :
1106 27905 : if (gfc_match_char ('*') == MATCH_YES)
1107 : return MATCH_YES;
1108 :
1109 21374 : if (gfc_match_char (':') == MATCH_YES)
1110 : {
1111 3384 : if (!gfc_notify_std (GFC_STD_F2003, "deferred type parameter at %C"))
1112 : return MATCH_ERROR;
1113 :
1114 3382 : *deferred = true;
1115 :
1116 3382 : return MATCH_YES;
1117 : }
1118 :
1119 17990 : m = gfc_match_expr (expr);
1120 :
1121 17990 : if (m == MATCH_NO || m == MATCH_ERROR)
1122 : return m;
1123 :
1124 17985 : 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 17979 : p = gfc_copy_expr (*expr);
1129 17979 : if (gfc_is_constant_expr (p) && gfc_simplify_expr (p, 1))
1130 14935 : gfc_replace_expr (*expr, p);
1131 : else
1132 3044 : gfc_free_expr (p);
1133 :
1134 17979 : 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 16958 : 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 14863 : if ((*expr)->ts.type == BT_INTEGER)
1152 : {
1153 14845 : 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 2095 : else if ((*expr)->expr_type == EXPR_ARRAY)
1160 8 : goto syntax;
1161 2087 : else if ((*expr)->expr_type == EXPR_VARIABLE)
1162 : {
1163 1516 : bool t;
1164 1516 : gfc_expr *e;
1165 :
1166 1516 : 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 1516 : 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 1514 : t = gfc_reduce_init_expr (e);
1176 :
1177 1514 : 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 1507 : if ((e->ref && e->ref->type == REF_ARRAY
1188 4 : && e->ref->u.ar.type != AR_ELEMENT)
1189 1506 : || (!e->ref && e->expr_type == EXPR_ARRAY))
1190 : {
1191 2 : gfc_free_expr (e);
1192 2 : goto syntax;
1193 : }
1194 :
1195 1505 : gfc_free_expr (e);
1196 : }
1197 :
1198 16921 : 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 63183 : match_char_length (gfc_expr **expr, bool *deferred, bool obsolescent_check)
1214 : {
1215 63183 : int length;
1216 63183 : match m;
1217 :
1218 63183 : *deferred = false;
1219 63183 : m = gfc_match_char ('*');
1220 63183 : 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 286470 : find_special (const char *name, gfc_symbol **result, bool allow_subroutine)
1278 : {
1279 286470 : gfc_state_data *s;
1280 286470 : gfc_symtree *st;
1281 286470 : int i;
1282 :
1283 286470 : i = gfc_get_sym_tree (name, NULL, &st, allow_subroutine);
1284 286470 : if (i == 0)
1285 : {
1286 286470 : *result = st ? st->n.sym : NULL;
1287 286470 : 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 64867 : get_proc_name (const char *name, gfc_symbol **result, bool module_fcn_entry)
1322 : {
1323 64867 : gfc_symtree *st;
1324 64867 : gfc_symbol *sym;
1325 64867 : 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 64867 : 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 64607 : rc = gfc_get_symbol (name, gfc_current_ns->parent, result);
1371 :
1372 64867 : if (rc)
1373 : return rc;
1374 :
1375 64866 : sym = *result;
1376 64866 : if (sym->attr.proc == PROC_ST_FUNCTION)
1377 : return rc;
1378 :
1379 64865 : 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 64393 : else if (sym && !sym->gfc_new
1405 24854 : && 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 23519 : if (sym->attr.flavor != 0
1413 21436 : && sym->attr.proc != 0
1414 2398 : && (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 23512 : if (sym->attr.flavor != 0
1422 21429 : && 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 23511 : 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 23510 : 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 23509 : if ((sym->ts.kind != 0
1454 23136 : || sym->ts.type == BT_CLASS
1455 23135 : || 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 64850 : 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 64850 : 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 64850 : if (sym && !sym->gfc_new
1497 25311 : && sym->attr.flavor != FL_UNKNOWN
1498 22828 : && 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 64849 : 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 52522 : 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 52264 : st = gfc_new_symtree (&gfc_current_ns->sym_root, name);
1521 :
1522 52522 : st->n.sym = sym;
1523 52522 : sym->refs++;
1524 :
1525 : /* See if the procedure should be a module procedure. */
1526 :
1527 52522 : if (((sym->ns->proc_name != NULL
1528 52522 : && sym->ns->proc_name->attr.flavor == FL_MODULE
1529 21331 : && sym->attr.proc != PROC_MODULE)
1530 52522 : || (module_fcn_entry && sym->attr.proc != PROC_MODULE))
1531 71012 : && !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 17316 : gfc_verify_c_interop_param (gfc_symbol *sym)
1557 : {
1558 17316 : int is_c_interop = 0;
1559 17316 : 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 17316 : 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 17316 : 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 17312 : if (sym->ns != NULL && sym->ns->proc_name != NULL)
1591 : {
1592 17312 : if (sym->ns->proc_name->attr.is_bind_c == 1)
1593 : {
1594 17273 : bool f2018_allowed = gfc_option.allow_std & ~GFC_STD_OPT_F08;
1595 17273 : bool f2018_added = false;
1596 :
1597 17273 : 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 17273 : 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 17273 : 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 16633 : if ((sym->attr.pointer || sym->attr.allocatable)
1668 1041 : && sym->ts.type == BT_DERIVED
1669 17651 : && 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 17273 : 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 17273 : 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 17273 : 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 17273 : if (sym->attr.allocatable == 1
1759 17674 : && !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 17273 : if (sym->attr.pointer == 1
1767 17913 : && !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 17273 : 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 17264 : else if (sym->attr.optional == 1
1783 18218 : && !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 5551 : if (sym->as != NULL && sym->as->type == AS_ASSUMED_SHAPE
1794 18606 : && !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 1333 : &(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 264695 : build_sym (const char *name, int elem, gfc_charlen *cl, bool cl_deferred,
1813 : gfc_array_spec **as, locus *var_locus)
1814 : {
1815 264695 : symbol_attribute attr;
1816 264695 : gfc_symbol *sym;
1817 264695 : int upper;
1818 264695 : 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 264695 : st = gfc_find_symtree (gfc_current_ns->sym_root, name);
1825 264695 : 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 264695 : 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 264683 : 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 264681 : 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 264693 : upper = TOUPPER(name[0]);
1865 264693 : if (upper != name[0])
1866 : {
1867 263943 : char u_name[GFC_MAX_SYMBOL_LEN + 1];
1868 263943 : gfc_symtree *st;
1869 :
1870 263943 : gcc_assert (strlen(name) <= GFC_MAX_SYMBOL_LEN);
1871 263943 : strcpy (u_name, name);
1872 263943 : u_name[0] = upper;
1873 :
1874 263943 : st = gfc_find_symtree (gfc_current_ns->sym_root, u_name);
1875 :
1876 : /* STRUCTURE types can alias symbol names */
1877 263943 : 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 264692 : if (current_ts.type != BT_UNKNOWN
1887 264692 : && (sym->attr.implicit_type == 0
1888 186 : || !gfc_compare_types (&sym->ts, ¤t_ts))
1889 529202 : && !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 264665 : if (sym->ts.type == BT_CHARACTER)
1906 : {
1907 29128 : if (elem > 1)
1908 4160 : sym->ts.u.cl = gfc_new_charlen (sym->ns, cl);
1909 : else
1910 : sym->ts.u.cl = cl;
1911 29128 : sym->ts.deferred = cl_deferred;
1912 : }
1913 :
1914 : /* Add dimension attribute if present. */
1915 264665 : if (!gfc_set_array_spec (sym, *as, var_locus))
1916 : return false;
1917 264663 : *as = NULL;
1918 :
1919 : /* Add attribute to symbol. The copy is so that we can reset the
1920 : dimension attribute. */
1921 264663 : attr = current_attr;
1922 264663 : attr.dimension = 0;
1923 264663 : attr.codimension = 0;
1924 :
1925 264663 : 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 264649 : 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 264647 : 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 264647 : sym->attr.implied_index = 0;
1964 :
1965 : /* Use the parameter expressions for a parameterized derived type. */
1966 264647 : if ((sym->ts.type == BT_DERIVED || sym->ts.type == BT_CLASS)
1967 37594 : && sym->ts.u.derived->attr.pdt_type && type_param_spec_list)
1968 1122 : sym->param_list = gfc_copy_actual_arglist (type_param_spec_list);
1969 :
1970 264647 : if (sym->ts.type == BT_CLASS)
1971 11382 : 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 14487 : gfc_set_constant_character_len (gfc_charlen_t len, gfc_expr *expr,
1984 : gfc_charlen_t check_len)
1985 : {
1986 14487 : gfc_char_t *s;
1987 14487 : gfc_charlen_t slen;
1988 :
1989 14487 : if (expr->ts.type != BT_CHARACTER)
1990 : return;
1991 :
1992 14485 : 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 14484 : slen = expr->value.character.length;
1999 14484 : if (len != slen)
2000 : {
2001 2148 : s = gfc_get_wide_string (len + 1);
2002 2148 : memcpy (s, expr->value.character.string,
2003 2148 : MIN (len, slen) * sizeof (gfc_char_t));
2004 2148 : if (len > slen)
2005 1857 : gfc_wide_memset (&s[slen], ' ', len - slen);
2006 :
2007 2148 : 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 2148 : 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 2148 : s[len] = '\0';
2031 2148 : free (expr->value.character.string);
2032 2148 : expr->value.character.string = s;
2033 2148 : expr->value.character.length = len;
2034 : /* If explicit representation was given, clear it
2035 : as it is no longer needed after padding. */
2036 2148 : 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 2753 : fix_initializer_charlen (gfc_typespec *ts, gfc_expr *init)
2107 : {
2108 2753 : if (!gfc_specification_expr (ts->u.cl->length))
2109 : return false;
2110 :
2111 2753 : 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 2753 : if (mpz_cmp (ts->u.cl->length->value.integer,
2116 2753 : gfc_integer_kinds[k].huge) <= 0)
2117 : {
2118 2752 : HOST_WIDE_INT len
2119 2752 : = gfc_mpz_get_hwi (ts->u.cl->length->value.integer);
2120 :
2121 2752 : if (init->expr_type == EXPR_CONSTANT)
2122 2006 : gfc_set_constant_character_len (len, init, -1);
2123 746 : else if (init->expr_type == EXPR_ARRAY)
2124 : {
2125 745 : gfc_constructor *cons;
2126 :
2127 : /* Build a new charlen to prevent simplification from
2128 : deleting the length before it is resolved. */
2129 745 : init->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
2130 745 : init->ts.u.cl->length = gfc_copy_expr (ts->u.cl->length);
2131 745 : cons = gfc_constructor_first (init->value.constructor);
2132 5049 : for (; cons; cons = gfc_constructor_next (cons))
2133 3559 : 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 273044 : add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus,
2146 : gfc_charlen *saved_cl_list)
2147 : {
2148 273044 : symbol_attribute attr;
2149 273044 : gfc_symbol *sym;
2150 273044 : gfc_expr *init;
2151 :
2152 273044 : init = *initp;
2153 273044 : if (find_special (name, &sym, false))
2154 : return false;
2155 :
2156 273044 : attr = sym->attr;
2157 :
2158 : /* If this symbol is confirming an implicit parameter type,
2159 : then an initialization expression is not allowed. */
2160 273044 : 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 273043 : if (init == NULL)
2173 : {
2174 : /* An initializer is required for PARAMETER declarations. */
2175 239584 : 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 33459 : 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 32278 : if (!gfc_bt_struct (sym->ts.type) && !gfc_bt_struct (init->ts.type)
2195 32255 : && sym->ts.type != BT_CLASS && init->ts.type != BT_CLASS
2196 32205 : && !sym->attr.proc_pointer
2197 65555 : && !gfc_check_assign_symbol (sym, NULL, init))
2198 : return false;
2199 :
2200 33428 : if (sym->ts.type == BT_CHARACTER && sym->ts.u.cl
2201 3446 : && init->ts.type == BT_CHARACTER)
2202 : {
2203 : /* Update symbol character length according initializer. */
2204 3282 : if (!gfc_check_assign_symbol (sym, NULL, init))
2205 : return false;
2206 :
2207 3282 : if (sym->ts.u.cl->length == NULL)
2208 : {
2209 851 : 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 851 : sym->ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
2213 :
2214 851 : if (sym->attr.flavor == FL_PARAMETER)
2215 : {
2216 842 : if (init->expr_type == EXPR_CONSTANT)
2217 : {
2218 557 : clen = init->value.character.length;
2219 557 : sym->ts.u.cl->length
2220 557 : = gfc_get_int_expr (gfc_charlen_int_kind,
2221 : NULL, clen);
2222 : }
2223 285 : else if (init->expr_type == EXPR_ARRAY)
2224 : {
2225 285 : if (init->ts.u.cl && init->ts.u.cl->length)
2226 : {
2227 273 : const gfc_expr *length = init->ts.u.cl->length;
2228 273 : 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 270 : clen = mpz_get_si (length->value.integer);
2247 270 : }
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 282 : sym->ts.u.cl->length
2257 282 : = 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 2431 : else if (sym->ts.u.cl->length->expr_type == EXPR_CONSTANT
2267 2431 : && !fix_initializer_charlen (&sym->ts, init))
2268 : return false;
2269 : }
2270 :
2271 33425 : if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension && sym->as
2272 3802 : && 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 33422 : if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension
2281 3799 : && 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 33417 : if (sym->attr.flavor == FL_PARAMETER && sym->attr.dimension
2350 3794 : && sym->as && sym->as->type == AS_EXPLICIT)
2351 : {
2352 8422 : for (int dim = 0; dim < sym->as->rank; ++dim)
2353 : {
2354 4640 : gfc_expr *e;
2355 :
2356 4640 : e = sym->as->lower[dim];
2357 4640 : if (e->expr_type != EXPR_CONSTANT)
2358 12 : gfc_reduce_init_expr (e);
2359 :
2360 4640 : e = sym->as->upper[dim];
2361 4640 : 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 33417 : if (sym->ts.type != BT_CHARACTER && !gfc_bt_struct (sym->ts.type))
2376 : {
2377 28796 : sym->ts.is_iso_c |= init->ts.is_iso_c;
2378 28796 : sym->ts.is_c_interop |= init->ts.is_c_interop;
2379 : /* attr bits needed for module files. */
2380 28796 : sym->attr.is_iso_c |= init->ts.is_iso_c;
2381 28796 : sym->attr.is_c_interop |= init->ts.is_c_interop;
2382 28796 : 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 33417 : 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 33416 : if (sym->attr.dimension && init->rank == 0)
2396 : {
2397 1283 : mpz_t size;
2398 1283 : gfc_expr *array;
2399 1283 : int n;
2400 1283 : 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 1750 : && 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 1283 : init->rank = sym->as->rank;
2425 1283 : init->corank = sym->as->corank;
2426 : }
2427 :
2428 33416 : sym->value = init;
2429 33416 : if (sym->attr.save == SAVE_NONE)
2430 28807 : sym->attr.save = SAVE_IMPLICIT;
2431 33416 : *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 18501 : build_struct (const char *name, gfc_charlen *cl, gfc_expr **init,
2443 : gfc_array_spec **as)
2444 : {
2445 18501 : gfc_state_data *s;
2446 18501 : 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 18501 : if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
2451 3545 : && 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 18500 : 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 18495 : 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 18495 : s = gfc_state_stack;
2497 18495 : 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 18495 : if (!gfc_add_component (gfc_current_block(), name, &c))
2516 : return false;
2517 :
2518 18489 : c->ts = current_ts;
2519 18489 : if (c->ts.type == BT_CHARACTER)
2520 : {
2521 1958 : 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 1958 : gfc_remove_saved_charlen (cl);
2525 : }
2526 :
2527 18489 : if (c->ts.type != BT_CLASS && c->ts.type != BT_DERIVED
2528 14950 : && (c->ts.kind == 0 || c->ts.type == BT_CHARACTER)
2529 2144 : && saved_kind_expr != NULL)
2530 200 : c->kind_expr = gfc_copy_expr (saved_kind_expr);
2531 :
2532 18489 : c->attr = current_attr;
2533 :
2534 18489 : c->initializer = *init;
2535 18489 : *init = NULL;
2536 :
2537 : /* Update initializer character length according to component. */
2538 1958 : if (c->ts.type == BT_CHARACTER && c->ts.u.cl->length
2539 1551 : && c->ts.u.cl->length->expr_type == EXPR_CONSTANT
2540 1486 : && c->initializer && c->initializer->ts.type == BT_CHARACTER
2541 18814 : && !fix_initializer_charlen (&c->ts, c->initializer))
2542 : return false;
2543 :
2544 18489 : c->as = *as;
2545 18489 : if (c->as != NULL)
2546 : {
2547 4957 : if (c->as->corank)
2548 113 : c->attr.codimension = 1;
2549 4957 : if (c->as->rank)
2550 4876 : c->attr.dimension = 1;
2551 : }
2552 18489 : *as = NULL;
2553 :
2554 18489 : 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 18489 : 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 18489 : if (!c->attr.dimension)
2576 13613 : goto scalar;
2577 :
2578 4876 : 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 4144 : else if (c->attr.allocatable)
2588 : {
2589 2465 : const char *err = G_("Allocatable component of structure at %C must have "
2590 : "a deferred shape");
2591 2465 : 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 1679 : 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 1672 : scalar:
2620 18467 : if (c->ts.type == BT_CLASS)
2621 879 : return gfc_build_class_symbol (&c->ts, &c->attr, &c->as);
2622 :
2623 17588 : if (c->attr.pdt_kind || c->attr.pdt_len)
2624 : {
2625 604 : gfc_symbol *sym;
2626 604 : gfc_find_symbol (c->name, gfc_current_block ()->f2k_derived,
2627 : 0, &sym);
2628 604 : 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 604 : sym->ts = c->ts;
2636 604 : sym->attr.pdt_kind = c->attr.pdt_kind;
2637 604 : sym->attr.pdt_len = c->attr.pdt_len;
2638 604 : if (c->initializer)
2639 246 : sym->value = gfc_copy_expr (c->initializer);
2640 604 : sym->attr.flavor = FL_VARIABLE;
2641 : }
2642 :
2643 17588 : if ((c->ts.type == BT_DERIVED || c->ts.type == BT_CLASS)
2644 2657 : && 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 1722 : gfc_match_null (gfc_expr **result)
2656 : {
2657 1722 : gfc_symbol *sym;
2658 1722 : match m, m2 = MATCH_NO;
2659 :
2660 1722 : if ((m = gfc_match (" null ( )")) == MATCH_ERROR)
2661 : return MATCH_ERROR;
2662 :
2663 1722 : 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 1217 : 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 1217 : gfc_intrinsic_symbol (sym);
2692 :
2693 1217 : if (sym->attr.proc != PROC_INTRINSIC
2694 859 : && !(sym->attr.use_assoc && sym->attr.intrinsic)
2695 2075 : && (!gfc_add_procedure(&sym->attr, PROC_INTRINSIC, sym->name, NULL)
2696 858 : || !gfc_add_function (&sym->attr, sym->name, NULL)))
2697 : return MATCH_ERROR;
2698 :
2699 1217 : *result = gfc_get_null_expr (&gfc_current_locus);
2700 :
2701 : /* Invalid per F2008, C512. */
2702 1217 : 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 1386 : match_pointer_init (gfc_expr **init, int procptr)
2716 : {
2717 1386 : match m;
2718 :
2719 1386 : 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 1385 : gfc_unset_implicit_pure (gfc_current_ns->proc_name);
2726 :
2727 : /* Match NULL() initialization. */
2728 1385 : m = gfc_match_null (init);
2729 1385 : 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 293114 : 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 293114 : if (gfc_current_state () == COMP_FUNCTION)
2766 : {
2767 48040 : gfc_symbol *block = gfc_current_block ();
2768 48040 : if (block && block->result && block->result != block
2769 15455 : && strcmp (block->result->name, "ppr@") != 0
2770 15396 : && 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 282883 : variable_decl (int elem)
2790 : {
2791 282883 : char name[GFC_MAX_SYMBOL_LEN + 1];
2792 282883 : static unsigned int fill_id = 0;
2793 282883 : gfc_expr *initializer, *char_len;
2794 282883 : gfc_array_spec *as;
2795 282883 : gfc_array_spec *cp_as; /* Extra copy for Cray Pointees. */
2796 282883 : gfc_charlen *cl;
2797 282883 : gfc_charlen *saved_cl_list;
2798 282883 : bool cl_deferred;
2799 282883 : locus var_locus;
2800 282883 : match m;
2801 282883 : bool t;
2802 282883 : gfc_symbol *sym;
2803 282883 : char c;
2804 :
2805 282883 : initializer = NULL;
2806 282883 : as = NULL;
2807 282883 : cp_as = NULL;
2808 282883 : 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 282883 : m = MATCH_NO;
2817 282883 : gfc_gobble_whitespace ();
2818 282883 : var_locus = gfc_current_locus;
2819 282883 : c = gfc_peek_ascii_char ();
2820 282883 : 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 282871 : m = gfc_match_name (name);
2856 282870 : if (m != MATCH_YES)
2857 10 : goto cleanup;
2858 : }
2859 :
2860 : /* Now we could see the optional array spec. or character length. */
2861 282868 : m = gfc_match_array_spec (&as, true, true);
2862 282867 : if (m == MATCH_ERROR)
2863 57 : goto cleanup;
2864 :
2865 282810 : if (m == MATCH_NO)
2866 220983 : as = gfc_copy_array_spec (current_as);
2867 61827 : else if (current_as
2868 61827 : && !merge_array_spec (current_as, as, true))
2869 : {
2870 4 : m = MATCH_ERROR;
2871 4 : goto cleanup;
2872 : }
2873 :
2874 282806 : var_locus = gfc_get_location_range (NULL, 0, &var_locus, 1,
2875 : &gfc_current_locus);
2876 282806 : 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 282806 : if (as)
2887 : {
2888 84525 : 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 84523 : if (as->type == AS_ASSUMED_SIZE && as->rank == 1
2897 6515 : && current_attr.flavor == FL_PARAMETER)
2898 993 : as->type = AS_IMPLIED_SHAPE;
2899 :
2900 84523 : if (as->type == AS_IMPLIED_SHAPE
2901 84523 : && !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 84522 : 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 84522 : if (as->type == AS_EXPLICIT
2914 42156 : && 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 50052 : bool not_constant = false;
2922 :
2923 50052 : for (int i = 0; i < as->rank; i++)
2924 : {
2925 28488 : e = gfc_copy_expr (as->lower[i]);
2926 28488 : if (!gfc_resolve_expr (e) && gfc_seen_div0)
2927 : {
2928 0 : m = MATCH_ERROR;
2929 0 : goto cleanup;
2930 : }
2931 :
2932 28488 : gfc_simplify_expr (e, 0);
2933 28488 : if (e && (e->expr_type != EXPR_CONSTANT))
2934 : {
2935 : not_constant = true;
2936 : break;
2937 : }
2938 28488 : gfc_free_expr (e);
2939 :
2940 28488 : e = gfc_copy_expr (as->upper[i]);
2941 28488 : if (!gfc_resolve_expr (e) && gfc_seen_div0)
2942 : {
2943 4 : m = MATCH_ERROR;
2944 4 : goto cleanup;
2945 : }
2946 :
2947 28484 : gfc_simplify_expr (e, 0);
2948 28484 : if (e && (e->expr_type != EXPR_CONSTANT))
2949 : {
2950 : not_constant = true;
2951 : break;
2952 : }
2953 28471 : gfc_free_expr (e);
2954 : }
2955 :
2956 21577 : 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 84505 : if (as->type == AS_EXPLICIT)
2972 : {
2973 100796 : for (int i = 0; i < as->rank; i++)
2974 : {
2975 58657 : gfc_expr *e, *n;
2976 58657 : e = as->lower[i];
2977 58657 : 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 58657 : e = as->upper[i];
2992 58657 : if (e->expr_type != EXPR_CONSTANT)
2993 : {
2994 6757 : n = gfc_copy_expr (e);
2995 6757 : if (!gfc_simplify_expr (n, 1) && gfc_seen_div0)
2996 : {
2997 0 : m = MATCH_ERROR;
2998 0 : goto cleanup;
2999 : }
3000 :
3001 6757 : if (n->expr_type == EXPR_CONSTANT)
3002 45 : gfc_replace_expr (e, n);
3003 : else
3004 6712 : 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 58657 : if (as->lower[i]->expr_type == EXPR_CONSTANT
3011 58227 : && as->upper[i]->expr_type == EXPR_CONSTANT
3012 51939 : && as->lower[i]->ts.type == BT_INTEGER
3013 51939 : && as->upper[i]->ts.type == BT_INTEGER
3014 51934 : && mpz_cmp (as->upper[i]->value.integer,
3015 51934 : 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 282786 : char_len = NULL;
3023 282786 : cl = NULL;
3024 282786 : cl_deferred = false;
3025 :
3026 282786 : if (current_ts.type == BT_CHARACTER)
3027 : {
3028 31127 : 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 30691 : case MATCH_NO:
3039 30691 : if (elem > 1
3040 3929 : && (current_ts.u.cl->length == NULL
3041 2709 : || current_ts.u.cl->length->expr_type != EXPR_CONSTANT))
3042 : {
3043 1275 : cl = gfc_new_charlen (gfc_current_ns, NULL);
3044 1275 : cl->length = gfc_copy_expr (current_ts.u.cl->length);
3045 : }
3046 : else
3047 29416 : cl = current_ts.u.cl;
3048 :
3049 30691 : cl_deferred = current_ts.deferred;
3050 :
3051 30691 : 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 282785 : if (gfc_current_ns->proc_name
3061 278297 : && 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 282783 : 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 282782 : 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 279823 : gfc_find_symbol (name, gfc_current_ns, 0, &sym);
3134 279823 : if (gfc_current_state () == COMP_FUNCTION
3135 46558 : && 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 279819 : sym = NULL;
3145 : }
3146 :
3147 : /* Procedure pointer as function result. */
3148 282677 : if (gfc_current_state () == COMP_FUNCTION
3149 46668 : && 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 282677 : if (gfc_current_state () == COMP_FUNCTION
3154 46668 : && 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 282677 : if (!gfc_comp_struct (gfc_current_state ())
3171 264147 : && !build_sym (name, elem, cl, cl_deferred, &as, &var_locus))
3172 : {
3173 48 : m = MATCH_ERROR;
3174 48 : goto cleanup;
3175 : }
3176 :
3177 282629 : 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 282629 : 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 282543 : if (colon_seen)
3230 : {
3231 236295 : if (gfc_match (" =>") == MATCH_YES)
3232 : {
3233 1203 : 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 1203 : m = match_pointer_init (&initializer, 0);
3241 1203 : 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 1193 : 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 235092 : else if (gfc_match_char ('=') == MATCH_YES)
3255 : {
3256 26372 : 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 26372 : if (gfc_comp_struct (gfc_current_state ())
3265 2526 : && gfc_current_block ()->attr.pdt_template)
3266 : {
3267 269 : m = gfc_match_expr (&initializer);
3268 269 : if (initializer && initializer->ts.type == BT_UNKNOWN)
3269 115 : initializer->ts = current_ts;
3270 : }
3271 : else
3272 26103 : m = gfc_match_init_expr (&initializer);
3273 :
3274 26372 : if (m == MATCH_NO)
3275 : {
3276 1 : gfc_error ("Expected an initialization expression at %C");
3277 1 : m = MATCH_ERROR;
3278 : }
3279 :
3280 10317 : if (current_attr.flavor != FL_PARAMETER && gfc_pure (NULL)
3281 26374 : && !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 26372 : if (current_attr.flavor != FL_PARAMETER
3289 10317 : && !gfc_comp_struct (gfc_state_stack->state))
3290 7791 : gfc_unset_implicit_pure (gfc_current_ns->proc_name);
3291 :
3292 26372 : if (m != MATCH_YES)
3293 160 : goto cleanup;
3294 : }
3295 : }
3296 :
3297 282373 : 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 282371 : if (gfc_current_state () == COMP_DERIVED
3307 17488 : && 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 282370 : if (gfc_current_state () == COMP_DERIVED
3316 17487 : && gfc_current_block ()->attr.pdt_template)
3317 : {
3318 1146 : gfc_symbol *param;
3319 1146 : gfc_find_symbol (name, gfc_current_block ()->f2k_derived,
3320 : 0, ¶m);
3321 1146 : 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 1145 : 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 1144 : 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 1143 : else if (param && initializer)
3345 : {
3346 247 : 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 246 : 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 28846 : if (current_ts.type == BT_DERIVED && initializer
3361 283817 : && (gfc_numeric_ts (&initializer->ts)
3362 1449 : || initializer->ts.type == BT_LOGICAL
3363 1449 : || 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 282364 : if (!gfc_comp_struct (gfc_current_state ()))
3377 263863 : t = add_init_expr_to_sym (name, &initializer, &var_locus,
3378 : saved_cl_list);
3379 : else
3380 : {
3381 18501 : if (current_ts.type == BT_DERIVED
3382 2657 : && !current_attr.pointer && !initializer)
3383 2098 : initializer = gfc_default_initializer (¤t_ts);
3384 18501 : 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 18501 : if (gfc_new_block && gfc_new_block->attr.flavor == FL_STRUCT)
3390 34 : gfc_commit_symbol (gfc_new_block);
3391 : }
3392 :
3393 282364 : m = (t) ? MATCH_YES : MATCH_ERROR;
3394 :
3395 282810 : cleanup:
3396 : /* Free stuff up and return. */
3397 282810 : gfc_seen_div0 = false;
3398 282810 : gfc_free_expr (initializer);
3399 282810 : gfc_free_array_spec (as);
3400 :
3401 282810 : 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 108132 : gfc_match_old_kind_spec (gfc_typespec *ts)
3411 : {
3412 108132 : match m;
3413 108132 : int original_kind;
3414 :
3415 108132 : 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 161305 : gfc_match_kind_spec (gfc_typespec *ts, bool kind_expr_only)
3484 : {
3485 161305 : locus where, loc;
3486 161305 : gfc_expr *e;
3487 161305 : match m, n;
3488 161305 : char c;
3489 :
3490 161305 : m = MATCH_NO;
3491 161305 : n = MATCH_YES;
3492 161305 : e = NULL;
3493 161305 : saved_kind_expr = NULL;
3494 :
3495 161305 : where = loc = gfc_current_locus;
3496 :
3497 161305 : if (kind_expr_only)
3498 0 : goto kind_expr;
3499 :
3500 161305 : if (gfc_match_char ('(') == MATCH_NO)
3501 : return MATCH_NO;
3502 :
3503 : /* Also gobbles optional text. */
3504 51672 : if (gfc_match (" kind = ") == MATCH_YES)
3505 51672 : m = MATCH_ERROR;
3506 :
3507 51672 : loc = gfc_current_locus;
3508 :
3509 51672 : kind_expr:
3510 :
3511 51672 : n = gfc_match_init_expr (&e);
3512 :
3513 51672 : if (gfc_derived_parameter_expr (e))
3514 : {
3515 166 : ts->kind = 0;
3516 166 : saved_kind_expr = gfc_copy_expr (e);
3517 166 : goto close_brackets;
3518 : }
3519 :
3520 51506 : 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 51041 : 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 51041 : 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 51041 : 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 18868 : ts->is_c_interop = e->ts.is_iso_c;
3568 18868 : ts->f90_type = e->ts.f90_type;
3569 18868 : if (e->symtree)
3570 18867 : ts->interop_kind = e->symtree->n.sym;
3571 : }
3572 :
3573 51041 : gfc_free_expr (e);
3574 51041 : 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 51041 : 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 51034 : 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 51021 : close_brackets:
3598 :
3599 51200 : gfc_gobble_whitespace ();
3600 51200 : if ((c = gfc_next_ascii_char ()) != ')'
3601 51200 : && (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 51200 : m = MATCH_YES;
3613 :
3614 51200 : if(m == MATCH_ERROR)
3615 : gfc_current_locus = where;
3616 :
3617 51200 : if (ts->type == BT_INTEGER && ts->kind == 4 && flag_integer4_kind == 8)
3618 0 : ts->kind = 8;
3619 :
3620 51200 : if (ts->type == BT_REAL || ts->type == BT_COMPLEX)
3621 : {
3622 14451 : if (ts->kind == 4)
3623 : {
3624 4605 : if (flag_real4_kind == 8)
3625 54 : ts->kind = 8;
3626 4605 : if (flag_real4_kind == 10)
3627 54 : ts->kind = 10;
3628 4605 : if (flag_real4_kind == 16)
3629 54 : ts->kind = 16;
3630 : }
3631 9846 : else if (ts->kind == 8)
3632 : {
3633 6690 : if (flag_real8_kind == 4)
3634 48 : ts->kind = 4;
3635 6690 : if (flag_real8_kind == 10)
3636 48 : ts->kind = 10;
3637 6690 : 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 4870 : match_char_kind (int * kind, int * is_iso_c)
3654 : {
3655 4870 : locus where;
3656 4870 : gfc_expr *e;
3657 4870 : match m, n;
3658 4870 : bool fail;
3659 :
3660 4870 : m = MATCH_NO;
3661 4870 : e = NULL;
3662 4870 : where = gfc_current_locus;
3663 :
3664 4870 : n = gfc_match_init_expr (&e);
3665 :
3666 4870 : 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 4863 : if (n != MATCH_YES)
3679 : return MATCH_ERROR;
3680 :
3681 4856 : 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 4856 : if (gfc_derived_parameter_expr (e))
3689 : {
3690 14 : saved_kind_expr = e;
3691 14 : *kind = 0;
3692 14 : return MATCH_YES;
3693 : }
3694 :
3695 4842 : fail = gfc_extract_int (e, kind, 1);
3696 4842 : *is_iso_c = e->ts.is_iso_c;
3697 4842 : if (fail)
3698 : {
3699 0 : m = MATCH_ERROR;
3700 0 : goto no_match;
3701 : }
3702 :
3703 4842 : 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 4842 : 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 32056 : gfc_match_char_spec (gfc_typespec *ts)
3734 : {
3735 32056 : int kind, seen_length, is_iso_c;
3736 32056 : gfc_charlen *cl;
3737 32056 : gfc_expr *len;
3738 32056 : match m;
3739 32056 : bool deferred;
3740 :
3741 32056 : len = NULL;
3742 32056 : seen_length = 0;
3743 32056 : kind = 0;
3744 32056 : is_iso_c = 0;
3745 32056 : deferred = false;
3746 :
3747 : /* Try the old-style specification first. */
3748 32056 : old_char_selector = 0;
3749 :
3750 32056 : m = match_char_length (&len, &deferred, true);
3751 32056 : 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 29851 : m = gfc_match_char ('(');
3760 29851 : 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 27935 : if (gfc_match (" kind =") == MATCH_YES)
3768 : {
3769 3391 : m = match_char_kind (&kind, &is_iso_c);
3770 :
3771 3391 : if (m == MATCH_ERROR)
3772 16 : goto done;
3773 3375 : if (m == MATCH_NO)
3774 : goto syntax;
3775 :
3776 3375 : if (gfc_match (" , len =") == MATCH_NO)
3777 518 : goto rparen;
3778 :
3779 2857 : m = char_len_param_value (&len, &deferred);
3780 2857 : if (m == MATCH_NO)
3781 0 : goto syntax;
3782 2857 : if (m == MATCH_ERROR)
3783 2 : goto done;
3784 2855 : seen_length = 1;
3785 :
3786 2855 : goto rparen;
3787 : }
3788 :
3789 : /* Try to match "LEN = <len-param>" or "LEN = <len-param>, KIND = <int>". */
3790 24544 : if (gfc_match (" len =") == MATCH_YES)
3791 : {
3792 13981 : m = char_len_param_value (&len, &deferred);
3793 13981 : if (m == MATCH_NO)
3794 2 : goto syntax;
3795 13979 : if (m == MATCH_ERROR)
3796 8 : goto done;
3797 13971 : seen_length = 1;
3798 :
3799 13971 : if (gfc_match_char (')') == MATCH_YES)
3800 12666 : 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 10563 : m = char_len_param_value (&len, &deferred);
3813 10563 : if (m == MATCH_NO)
3814 0 : goto syntax;
3815 10563 : if (m == MATCH_ERROR)
3816 44 : goto done;
3817 10519 : seen_length = 1;
3818 :
3819 10519 : m = gfc_match_char (')');
3820 10519 : if (m == MATCH_YES)
3821 10343 : goto done;
3822 :
3823 176 : if (gfc_match_char (',') != MATCH_YES)
3824 2 : goto syntax;
3825 :
3826 174 : gfc_match (" kind ="); /* Gobble optional text. */
3827 :
3828 174 : m = match_char_kind (&kind, &is_iso_c);
3829 174 : if (m == MATCH_ERROR)
3830 3 : goto done;
3831 : if (m == MATCH_NO)
3832 : goto syntax;
3833 :
3834 4847 : rparen:
3835 : /* Require a right-paren at this point. */
3836 4847 : m = gfc_match_char (')');
3837 4847 : if (m == MATCH_YES)
3838 4847 : 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 32052 : done:
3847 : /* Deal with character functions after USE and IMPORT statements. */
3848 32052 : if (gfc_matching_function)
3849 : {
3850 1431 : gfc_free_expr (len);
3851 1431 : gfc_undo_symbols ();
3852 1431 : return MATCH_YES;
3853 : }
3854 :
3855 30621 : 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 30556 : cl = gfc_new_charlen (gfc_current_ns, NULL);
3863 :
3864 30556 : 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 28174 : if (len && len->expr_type != EXPR_CONSTANT)
3875 : {
3876 3057 : gfc_namespace *old_ns;
3877 3057 : gfc_expr *e;
3878 :
3879 3057 : old_ns = gfc_current_ns;
3880 3057 : gfc_current_ns = gfc_get_namespace (NULL, 0);
3881 :
3882 3057 : e = gfc_copy_expr (len);
3883 3057 : gfc_push_suppress_errors ();
3884 3057 : gfc_reduce_init_expr (e);
3885 3057 : gfc_pop_suppress_errors ();
3886 3057 : if (e->expr_type == EXPR_CONSTANT)
3887 : {
3888 294 : gfc_replace_expr (len, e);
3889 294 : if (mpz_cmp_si (len->value.integer, 0) < 0)
3890 7 : mpz_set_ui (len->value.integer, 0);
3891 : }
3892 : else
3893 2763 : gfc_free_expr (e);
3894 :
3895 3057 : gfc_free_namespace (gfc_current_ns);
3896 3057 : gfc_current_ns = old_ns;
3897 : }
3898 :
3899 28174 : cl->length = len;
3900 : }
3901 :
3902 30556 : ts->u.cl = cl;
3903 30556 : ts->kind = kind == 0 ? gfc_default_character_kind : kind;
3904 30556 : 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 30556 : if (kind != 0)
3909 : /* Mark this as C interoperable if being declared with one
3910 : of the named constants from iso_c_binding. */
3911 4753 : ts->is_c_interop = is_iso_c;
3912 25803 : 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 16621 : 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 972624 : match_record_decl (char *name)
3931 : {
3932 972624 : locus old_loc;
3933 972624 : old_loc = gfc_current_locus;
3934 972624 : match m;
3935 :
3936 972624 : m = gfc_match (" record /");
3937 972624 : 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 972274 : gfc_current_locus = old_loc;
3952 972274 : if (flag_dec_structure
3953 972274 : && (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 972274 : if (m == MATCH_NO)
3957 972274 : 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 880 : correct_parm_expr (gfc_expr* e, gfc_symbol* pdt, int* f ATTRIBUTE_UNUSED)
3969 : {
3970 880 : if (!e || (e->expr_type != EXPR_VARIABLE && e->expr_type != EXPR_FUNCTION))
3971 : return false;
3972 :
3973 711 : if (!(e->symtree->n.sym->attr.pdt_len
3974 122 : || e->symtree->n.sym->attr.pdt_kind))
3975 : {
3976 38 : gfc_symtree *st;
3977 38 : st = gfc_find_symtree (pdt->f2k_derived->sym_root,
3978 : e->symtree->n.sym->name);
3979 38 : 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 648 : gfc_correct_parm_expr (gfc_symbol *pdt, gfc_expr **bound)
3999 : {
4000 648 : if (!*bound || (*bound)->expr_type == EXPR_CONSTANT)
4001 : return;
4002 617 : 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 3205 : insert_parameter_exprs (gfc_expr* e, gfc_symbol* sym ATTRIBUTE_UNUSED,
4011 : int* f)
4012 : {
4013 3205 : gfc_actual_arglist *param;
4014 3205 : gfc_expr *copy;
4015 :
4016 3205 : if (e->expr_type != EXPR_VARIABLE && e->expr_type != EXPR_FUNCTION)
4017 : return false;
4018 :
4019 1429 : gcc_assert (e->symtree);
4020 1429 : if (e->symtree->n.sym->attr.pdt_kind
4021 1050 : || (*f != 0 && e->symtree->n.sym->attr.pdt_len)
4022 513 : || (e->expr_type == EXPR_FUNCTION && e->symtree->n.sym))
4023 : {
4024 1414 : for (param = type_param_spec_list; param; param = param->next)
4025 1366 : if (!strcmp (e->symtree->n.sym->name, param->name))
4026 : break;
4027 :
4028 963 : if (param && param->expr)
4029 : {
4030 914 : copy = gfc_copy_expr (param->expr);
4031 914 : gfc_replace_expr (e, copy);
4032 : /* Catch variables declared without a value expression. */
4033 914 : 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 953 : gfc_insert_kind_parameter_exprs (gfc_expr *e)
4044 : {
4045 953 : return gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 0);
4046 : }
4047 :
4048 :
4049 : bool
4050 1803 : gfc_insert_parameter_exprs (gfc_expr *e, gfc_actual_arglist *param_list)
4051 : {
4052 1803 : gfc_actual_arglist *old_param_spec_list = type_param_spec_list;
4053 1803 : type_param_spec_list = param_list;
4054 1803 : bool res = gfc_traverse_expr (e, NULL, &insert_parameter_exprs, 1);
4055 1803 : type_param_spec_list = old_param_spec_list;
4056 1803 : 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 2795 : 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 2795 : gfc_symbol *pdt = *sym;
4069 : /* The symbol for the parameter in the template f2k_namespace. */
4070 2795 : gfc_symbol *param;
4071 : /* The hoped for instance of the PDT. */
4072 2795 : gfc_symbol *instance = NULL;
4073 : /* The list of parameters appearing in the PDT declaration. */
4074 2795 : gfc_formal_arglist *type_param_name_list;
4075 : /* Used to store the parameter specification list during recursive calls. */
4076 2795 : gfc_actual_arglist *old_param_spec_list;
4077 : /* Pointers to the parameter specification being used. */
4078 2795 : gfc_actual_arglist *actual_param;
4079 2795 : gfc_actual_arglist *tail = NULL;
4080 : /* Used to build up the name of the PDT instance. */
4081 2795 : char *name;
4082 2795 : bool name_seen = (param_list == NULL);
4083 2795 : bool assumed_seen = false;
4084 2795 : bool deferred_seen = false;
4085 2795 : bool spec_error = false;
4086 2795 : bool alloc_seen = false;
4087 2795 : bool ptr_seen = false;
4088 2795 : int i;
4089 2795 : gfc_expr *kind_expr;
4090 2795 : gfc_component *c1, *c2;
4091 2795 : match m;
4092 2795 : gfc_symtree *s = NULL;
4093 :
4094 2795 : type_param_spec_list = NULL;
4095 :
4096 2795 : type_param_name_list = pdt->formal;
4097 2795 : 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 2795 : 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 2695 : 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 8960 : for (; type_param_name_list;
4117 3570 : type_param_name_list = type_param_name_list->next)
4118 : {
4119 3638 : if (actual_param && actual_param->spec_type != SPEC_EXPLICIT)
4120 : {
4121 3236 : if (actual_param->spec_type == SPEC_ASSUMED)
4122 : spec_error = deferred_seen;
4123 : else
4124 3236 : spec_error = assumed_seen;
4125 :
4126 3236 : 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 3236 : if (actual_param && actual_param->name)
4135 3638 : name_seen = true;
4136 3638 : param = type_param_name_list->sym;
4137 :
4138 3638 : if (!param || !param->name)
4139 2 : continue;
4140 :
4141 3636 : 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 3636 : 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 3628 : if (!param_list && (!c1->attr.pdt_kind && !c1->initializer))
4150 20 : continue;
4151 :
4152 3608 : kind_expr = NULL;
4153 3608 : if (!name_seen)
4154 : {
4155 2116 : 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 2114 : else if (!actual_param && c1 && c1->initializer)
4162 5 : kind_expr = gfc_copy_expr (c1->initializer);
4163 2109 : else if (actual_param && actual_param->spec_type == SPEC_EXPLICIT)
4164 1866 : kind_expr = gfc_copy_expr (actual_param->expr);
4165 : }
4166 : else
4167 : {
4168 : actual_param = param_list;
4169 1952 : for (;actual_param; actual_param = actual_param->next)
4170 1562 : if (actual_param->name
4171 1542 : && strcmp (actual_param->name, param->name) == 0)
4172 : break;
4173 1492 : if (actual_param && actual_param->spec_type == SPEC_EXPLICIT)
4174 935 : kind_expr = gfc_copy_expr (actual_param->expr);
4175 : else
4176 : {
4177 557 : if (c1->initializer)
4178 493 : 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 3299 : if (kind_expr && kind_expr->expr_type == EXPR_VARIABLE
4189 282 : && 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 3585 : if (type_param_spec_list == NULL)
4202 : {
4203 2652 : type_param_spec_list = gfc_get_actual_arglist ();
4204 2652 : tail = type_param_spec_list;
4205 : }
4206 : else
4207 : {
4208 933 : tail->next = gfc_get_actual_arglist ();
4209 933 : tail = tail->next;
4210 : }
4211 3585 : tail->name = param->name;
4212 :
4213 3585 : if (kind_expr)
4214 : {
4215 : /* Try simplification even for LEN expressions. */
4216 3287 : bool ok;
4217 3287 : gfc_resolve_expr (kind_expr);
4218 :
4219 3287 : if (c1->attr.pdt_kind
4220 1646 : && 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 3287 : 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 3287 : 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 3258 : 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 3254 : tail->expr = gfc_copy_expr (kind_expr);
4243 : }
4244 :
4245 3552 : if (actual_param)
4246 3164 : tail->spec_type = actual_param->spec_type;
4247 :
4248 3552 : if (!param->attr.pdt_kind)
4249 : {
4250 1931 : if (!name_seen && actual_param)
4251 1162 : actual_param = actual_param->next;
4252 1931 : if (kind_expr)
4253 : {
4254 1635 : gfc_free_expr (kind_expr);
4255 1635 : kind_expr = NULL;
4256 : }
4257 1931 : continue;
4258 : }
4259 :
4260 1621 : if (actual_param
4261 1277 : && (actual_param->spec_type == SPEC_ASSUMED
4262 1277 : || 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 1619 : 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 1617 : if (kind_expr->expr_type != EXPR_CONSTANT
4280 1617 : || 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 1617 : char *kind_value = mpz_get_str (NULL, 10, kind_expr->value.integer);
4288 1617 : char *old_name = name;
4289 1617 : name = xasprintf ("%s_%s", old_name, kind_value);
4290 1617 : free (old_name);
4291 1617 : free (kind_value);
4292 :
4293 1617 : if (!name_seen && actual_param)
4294 898 : actual_param = actual_param->next;
4295 1617 : gfc_free_expr (kind_expr);
4296 : }
4297 :
4298 2627 : 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 2625 : 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 2625 : s = gfc_find_symtree (gfc_current_ns->sym_root, pdt->name);
4316 2625 : if (gfc_current_ns->proc_name
4317 2578 : && 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 2625 : m = MATCH_YES;
4332 :
4333 2625 : if (instance->attr.flavor == FL_DERIVED
4334 2086 : && instance->attr.pdt_type
4335 2086 : && instance->components)
4336 : {
4337 2086 : instance->refs++;
4338 2086 : if (ext_param_list)
4339 990 : *ext_param_list = type_param_spec_list;
4340 2086 : *sym = instance;
4341 2086 : gfc_commit_symbols ();
4342 2086 : free (name);
4343 2086 : return m;
4344 : }
4345 :
4346 : /* Start building the new instance of the parameterized type. */
4347 539 : gfc_copy_attr (&instance->attr, &pdt->attr, &pdt->declared_at);
4348 539 : if (pdt->attr.use_assoc)
4349 60 : instance->module = pdt->module;
4350 539 : instance->attr.pdt_template = 0;
4351 539 : instance->attr.pdt_type = 1;
4352 539 : 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 539 : 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 539 : c1 = pdt->components;
4367 539 : tail = type_param_spec_list;
4368 1972 : for (; c1; c1 = c1->next)
4369 : {
4370 1435 : gfc_add_component (instance, c1->name, &c2);
4371 :
4372 1435 : c2->ts = c1->ts;
4373 1435 : c2->attr = c1->attr;
4374 1435 : 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 1435 : if (c1->attr.pdt_kind || c1->attr.pdt_len)
4383 : {
4384 1010 : for (tail = type_param_spec_list; tail; tail = tail->next)
4385 1006 : 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 1435 : if (gfc_current_state () != COMP_DERIVED
4392 1421 : && c1 == pdt->components
4393 526 : && c1->ts.type == BT_DERIVED
4394 48 : && c1->ts.u.derived
4395 1483 : && gfc_get_derived_super_type (*sym) == c2->ts.u.derived)
4396 : {
4397 48 : if (c1->ts.u.derived->attr.pdt_template)
4398 : {
4399 41 : gfc_formal_arglist *f;
4400 :
4401 41 : old_param_spec_list = type_param_spec_list;
4402 :
4403 : /* Obtain a spec list appropriate to the extended type..*/
4404 41 : actual_param = gfc_copy_actual_arglist (type_param_spec_list);
4405 41 : type_param_spec_list = actual_param;
4406 73 : for (f = c1->ts.u.derived->formal; f && f->next; f = f->next)
4407 32 : actual_param = actual_param->next;
4408 41 : if (actual_param)
4409 : {
4410 41 : gfc_free_actual_arglist (actual_param->next);
4411 41 : actual_param->next = NULL;
4412 : }
4413 :
4414 : /* Now obtain the PDT instance for the extended type. */
4415 41 : c2->param_list = type_param_spec_list;
4416 41 : m = gfc_get_pdt_instance (type_param_spec_list,
4417 : &c2->ts.u.derived,
4418 : &c2->param_list);
4419 41 : type_param_spec_list = old_param_spec_list;
4420 : }
4421 : else
4422 7 : c2->ts = c1->ts;
4423 :
4424 48 : c2->ts.u.derived->refs++;
4425 48 : 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 48 : if (c2->attr.allocatable || c2->ts.u.derived->attr.alloc_comp)
4431 6 : instance->attr.alloc_comp = 1;
4432 :
4433 : /* Set extension level. */
4434 48 : 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 48 : instance->attr.extension = c2->ts.u.derived->attr.extension + 1;
4444 :
4445 48 : continue;
4446 48 : }
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 1387 : if (!instance->f2k_derived && pdt->f2k_derived)
4458 : {
4459 508 : instance->f2k_derived = pdt->f2k_derived;
4460 508 : instance->f2k_derived->refs++;
4461 : }
4462 :
4463 : /* Set the component kind using the parameterized expression. */
4464 1387 : if ((c1->ts.kind == 0 || c1->ts.type == BT_CHARACTER)
4465 471 : && c1->kind_expr != NULL)
4466 : {
4467 278 : gfc_expr *e = gfc_copy_expr (c1->kind_expr);
4468 278 : gfc_insert_kind_parameter_exprs (e);
4469 278 : gfc_simplify_expr (e, 1);
4470 278 : gfc_extract_int (e, &c2->ts.kind);
4471 278 : gfc_free_expr (e);
4472 278 : 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 276 : 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 1385 : if (c2->attr.pdt_kind || c2->attr.pdt_len)
4495 : {
4496 718 : if (tail && tail->expr && gfc_is_constant_expr (tail->expr))
4497 590 : c2->initializer = gfc_copy_expr (tail->expr);
4498 128 : else if (tail && tail->expr)
4499 : {
4500 10 : c2->param_list = gfc_get_actual_arglist ();
4501 10 : c2->param_list->name = tail->name;
4502 10 : c2->param_list->expr = gfc_copy_expr (tail->expr);
4503 10 : c2->param_list->next = NULL;
4504 : }
4505 :
4506 718 : if (!c2->initializer && c1->initializer)
4507 24 : c2->initializer = gfc_copy_expr (c1->initializer);
4508 :
4509 718 : if (c2->initializer)
4510 614 : gfc_insert_parameter_exprs (c2->initializer, type_param_spec_list);
4511 : }
4512 :
4513 : /* Copy the array spec. */
4514 1385 : c2->as = gfc_copy_array_spec (c1->as);
4515 1385 : if (c1->ts.type == BT_CLASS)
4516 0 : CLASS_DATA (c2)->as = gfc_copy_array_spec (CLASS_DATA (c1)->as);
4517 :
4518 1385 : if (c1->attr.allocatable)
4519 76 : alloc_seen = true;
4520 :
4521 1385 : if (c1->attr.pointer)
4522 20 : ptr_seen = true;
4523 :
4524 : /* Determine if an array spec is parameterized. If so, substitute
4525 : in the parameter expressions for the bounds and set the pdt_array
4526 : attribute. Notice that this attribute must be unconditionally set
4527 : if this is an array of parameterized character length. */
4528 1385 : if (c1->as && c1->as->type == AS_EXPLICIT)
4529 : {
4530 : bool pdt_array = false;
4531 514 : bool all_constant = true;
4532 :
4533 : /* Are the bounds of the array parameterized? */
4534 514 : for (i = 0; i < c1->as->rank; i++)
4535 : {
4536 305 : if (gfc_derived_parameter_expr (c1->as->lower[i]))
4537 6 : pdt_array = true;
4538 305 : if (gfc_derived_parameter_expr (c1->as->upper[i]))
4539 291 : pdt_array = true;
4540 : }
4541 :
4542 : /* If they are, free the expressions for the bounds and
4543 : replace them with the template expressions with substitute
4544 : values. */
4545 500 : for (i = 0; pdt_array && i < c1->as->rank; i++)
4546 : {
4547 291 : gfc_expr *e;
4548 291 : e = gfc_copy_expr (c1->as->lower[i]);
4549 291 : gfc_insert_kind_parameter_exprs (e);
4550 291 : if (gfc_simplify_expr (e, 1))
4551 291 : gfc_replace_expr (c2->as->lower[i], e);
4552 : else
4553 0 : gfc_free_expr (e);
4554 291 : if (c2->as->lower[i]->expr_type != EXPR_CONSTANT)
4555 6 : all_constant = false;
4556 291 : e = gfc_copy_expr (c1->as->upper[i]);
4557 291 : gfc_insert_kind_parameter_exprs (e);
4558 291 : if (gfc_simplify_expr (e, 1))
4559 291 : gfc_replace_expr (c2->as->upper[i], e);
4560 : else
4561 0 : gfc_free_expr (e);
4562 291 : if (c2->as->upper[i]->expr_type != EXPR_CONSTANT)
4563 289 : all_constant = false;
4564 : }
4565 :
4566 209 : c2->attr.pdt_array = all_constant ? 0 : 1;
4567 209 : if (c1->initializer)
4568 : {
4569 7 : c2->initializer = gfc_copy_expr (c1->initializer);
4570 7 : gfc_insert_kind_parameter_exprs (c2->initializer);
4571 7 : gfc_simplify_expr (c2->initializer, 1);
4572 : }
4573 : }
4574 :
4575 : /* Similarly, set the string length if parameterized. */
4576 1385 : if (c1->ts.type == BT_CHARACTER
4577 87 : && c1->ts.u.cl->length
4578 1471 : && gfc_derived_parameter_expr (c1->ts.u.cl->length))
4579 : {
4580 86 : gfc_expr *e;
4581 86 : e = gfc_copy_expr (c1->ts.u.cl->length);
4582 86 : gfc_insert_kind_parameter_exprs (e);
4583 86 : if (gfc_simplify_expr (e, 1))
4584 86 : gfc_replace_expr (c2->ts.u.cl->length, e);
4585 : else
4586 0 : gfc_free_expr (e);
4587 86 : if (c2->ts.u.cl->length->expr_type != EXPR_CONSTANT)
4588 83 : c2->attr.pdt_string = 1;
4589 : }
4590 :
4591 : /* Recurse into this function for PDT components. */
4592 1385 : if ((c1->ts.type == BT_DERIVED || c1->ts.type == BT_CLASS)
4593 131 : && c1->ts.u.derived && c1->ts.u.derived->attr.pdt_template)
4594 : {
4595 123 : gfc_actual_arglist *params;
4596 : /* The component in the template has a list of specification
4597 : expressions derived from its declaration. */
4598 123 : params = gfc_copy_actual_arglist (c1->param_list);
4599 123 : actual_param = params;
4600 : /* Substitute the template parameters with the expressions
4601 : from the specification list. */
4602 384 : for (;actual_param; actual_param = actual_param->next)
4603 : {
4604 138 : gfc_correct_parm_expr (pdt, &actual_param->expr);
4605 138 : gfc_insert_parameter_exprs (actual_param->expr,
4606 : type_param_spec_list);
4607 : }
4608 :
4609 : /* Now obtain the PDT instance for the component. */
4610 123 : old_param_spec_list = type_param_spec_list;
4611 246 : m = gfc_get_pdt_instance (params, &c2->ts.u.derived,
4612 123 : &c2->param_list);
4613 123 : type_param_spec_list = old_param_spec_list;
4614 :
4615 123 : if (!(c2->attr.pointer || c2->attr.allocatable))
4616 : {
4617 83 : if (!c1->initializer
4618 58 : || c1->initializer->expr_type != EXPR_FUNCTION)
4619 82 : c2->initializer = gfc_default_initializer (&c2->ts);
4620 : else
4621 : {
4622 1 : gfc_symtree *s;
4623 1 : c2->initializer = gfc_copy_expr (c1->initializer);
4624 1 : s = gfc_find_symtree (pdt->ns->sym_root,
4625 1 : gfc_dt_lower_string (c2->ts.u.derived->name));
4626 1 : if (s)
4627 0 : c2->initializer->symtree = s;
4628 1 : c2->initializer->ts = c2->ts;
4629 1 : if (!s)
4630 1 : gfc_insert_parameter_exprs (c2->initializer,
4631 : type_param_spec_list);
4632 1 : gfc_simplify_expr (c2->initializer, 1);
4633 : }
4634 : }
4635 :
4636 123 : if (c2->attr.allocatable
4637 91 : || (c2->ts.type == BT_DERIVED && c2->ts.u.derived
4638 91 : && c2->ts.u.derived->attr.alloc_comp && !c2->attr.pointer))
4639 61 : instance->attr.alloc_comp = 1;
4640 : }
4641 1262 : else if (!(c2->attr.pdt_kind || c2->attr.pdt_len || c2->attr.pdt_string
4642 461 : || c2->attr.pdt_array) && c1->initializer)
4643 : {
4644 32 : c2->initializer = gfc_copy_expr (c1->initializer);
4645 32 : if (c2->initializer->ts.type == BT_UNKNOWN)
4646 12 : c2->initializer->ts = c2->ts;
4647 32 : gfc_insert_parameter_exprs (c2->initializer, type_param_spec_list);
4648 : /* The template initializers are parsed using gfc_match_expr rather
4649 : than gfc_match_init_expr. Apply the missing reduction to the
4650 : PDT instance initializers. */
4651 32 : if (!gfc_reduce_init_expr (c2->initializer))
4652 : {
4653 0 : gfc_free_expr (c2->initializer);
4654 0 : goto error_return;
4655 : }
4656 32 : gfc_simplify_expr (c2->initializer, 1);
4657 : }
4658 : }
4659 :
4660 537 : if (alloc_seen)
4661 73 : instance->attr.alloc_comp = 1;
4662 537 : if (ptr_seen)
4663 20 : instance->attr.pointer_comp = 1;
4664 :
4665 :
4666 537 : gfc_commit_symbol (instance);
4667 537 : if (ext_param_list)
4668 330 : *ext_param_list = type_param_spec_list;
4669 537 : *sym = instance;
4670 537 : free (name);
4671 537 : return m;
4672 :
4673 72 : error_return:
4674 72 : gfc_free_actual_arglist (type_param_spec_list);
4675 72 : free (name);
4676 72 : return MATCH_ERROR;
4677 : }
4678 :
4679 :
4680 : /* Match a legacy nonstandard BYTE type-spec. */
4681 :
4682 : static match
4683 1196184 : match_byte_typespec (gfc_typespec *ts)
4684 : {
4685 1196184 : if (gfc_match (" byte") == MATCH_YES)
4686 : {
4687 33 : if (!gfc_notify_std (GFC_STD_GNU, "BYTE type at %C"))
4688 : return MATCH_ERROR;
4689 :
4690 31 : if (gfc_current_form == FORM_FREE)
4691 : {
4692 19 : char c = gfc_peek_ascii_char ();
4693 19 : if (!gfc_is_whitespace (c) && c != ',')
4694 : return MATCH_NO;
4695 : }
4696 :
4697 29 : if (gfc_validate_kind (BT_INTEGER, 1, true) < 0)
4698 : {
4699 0 : gfc_error ("BYTE type used at %C "
4700 : "is not available on the target machine");
4701 0 : return MATCH_ERROR;
4702 : }
4703 :
4704 29 : ts->type = BT_INTEGER;
4705 29 : ts->kind = 1;
4706 29 : return MATCH_YES;
4707 : }
4708 : return MATCH_NO;
4709 : }
4710 :
4711 :
4712 : /* Matches a declaration-type-spec (F03:R502). If successful, sets the ts
4713 : structure to the matched specification. This is necessary for FUNCTION and
4714 : IMPLICIT statements.
4715 :
4716 : If implicit_flag is nonzero, then we don't check for the optional
4717 : kind specification. Not doing so is needed for matching an IMPLICIT
4718 : statement correctly. */
4719 :
4720 : match
4721 1196184 : gfc_match_decl_type_spec (gfc_typespec *ts, int implicit_flag)
4722 : {
4723 : /* Provide sufficient space to hold "pdtsymbol". */
4724 1196184 : char *name = XALLOCAVEC (char, GFC_MAX_SYMBOL_LEN + 1);
4725 1196184 : gfc_symbol *sym, *dt_sym;
4726 1196184 : match m;
4727 1196184 : char c;
4728 1196184 : bool seen_deferred_kind, matched_type;
4729 1196184 : const char *dt_name;
4730 :
4731 1196184 : decl_type_param_list = NULL;
4732 :
4733 : /* A belt and braces check that the typespec is correctly being treated
4734 : as a deferred characteristic association. */
4735 2392368 : seen_deferred_kind = (gfc_current_state () == COMP_FUNCTION)
4736 84356 : && (gfc_current_block ()->result->ts.kind == -1)
4737 1208087 : && (ts->kind == -1);
4738 1196184 : gfc_clear_ts (ts);
4739 1196184 : if (seen_deferred_kind)
4740 9668 : ts->kind = -1;
4741 :
4742 : /* Clear the current binding label, in case one is given. */
4743 1196184 : curr_binding_label = NULL;
4744 :
4745 : /* Match BYTE type-spec. */
4746 1196184 : m = match_byte_typespec (ts);
4747 1196184 : if (m != MATCH_NO)
4748 : return m;
4749 :
4750 1196153 : m = gfc_match (" type (");
4751 1196153 : matched_type = (m == MATCH_YES);
4752 1196153 : if (matched_type)
4753 : {
4754 31818 : gfc_gobble_whitespace ();
4755 31818 : if (gfc_peek_ascii_char () == '*')
4756 : {
4757 5617 : if ((m = gfc_match ("* ) ")) != MATCH_YES)
4758 : return m;
4759 5617 : if (gfc_comp_struct (gfc_current_state ()))
4760 : {
4761 2 : gfc_error ("Assumed type at %C is not allowed for components");
4762 2 : return MATCH_ERROR;
4763 : }
4764 5615 : if (!gfc_notify_std (GFC_STD_F2018, "Assumed type at %C"))
4765 : return MATCH_ERROR;
4766 5613 : ts->type = BT_ASSUMED;
4767 5613 : return MATCH_YES;
4768 : }
4769 :
4770 26201 : m = gfc_match ("%n", name);
4771 26201 : matched_type = (m == MATCH_YES);
4772 : }
4773 :
4774 26201 : if ((matched_type && strcmp ("integer", name) == 0)
4775 1190536 : || (!matched_type && gfc_match (" integer") == MATCH_YES))
4776 : {
4777 112815 : ts->type = BT_INTEGER;
4778 112815 : ts->kind = gfc_default_integer_kind;
4779 112815 : goto get_kind;
4780 : }
4781 :
4782 1077721 : if (flag_unsigned)
4783 : {
4784 0 : if ((matched_type && strcmp ("unsigned", name) == 0)
4785 22489 : || (!matched_type && gfc_match (" unsigned") == MATCH_YES))
4786 : {
4787 1036 : ts->type = BT_UNSIGNED;
4788 1036 : ts->kind = gfc_default_integer_kind;
4789 1036 : goto get_kind;
4790 : }
4791 : }
4792 :
4793 26195 : if ((matched_type && strcmp ("character", name) == 0)
4794 1076685 : || (!matched_type && gfc_match (" character") == MATCH_YES))
4795 : {
4796 29088 : if (matched_type
4797 29088 : && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
4798 : "intrinsic-type-spec at %C"))
4799 : return MATCH_ERROR;
4800 :
4801 29087 : ts->type = BT_CHARACTER;
4802 29087 : if (implicit_flag == 0)
4803 28981 : m = gfc_match_char_spec (ts);
4804 : else
4805 : m = MATCH_YES;
4806 :
4807 29087 : if (matched_type && m == MATCH_YES && gfc_match_char (')') != MATCH_YES)
4808 : {
4809 1 : gfc_error ("Malformed type-spec at %C");
4810 1 : return MATCH_ERROR;
4811 : }
4812 :
4813 : return m;
4814 : }
4815 :
4816 26191 : if ((matched_type && strcmp ("real", name) == 0)
4817 1047597 : || (!matched_type && gfc_match (" real") == MATCH_YES))
4818 : {
4819 30364 : ts->type = BT_REAL;
4820 30364 : ts->kind = gfc_default_real_kind;
4821 30364 : goto get_kind;
4822 : }
4823 :
4824 1017233 : if ((matched_type
4825 26188 : && (strcmp ("doubleprecision", name) == 0
4826 26187 : || (strcmp ("double", name) == 0
4827 5 : && gfc_match (" precision") == MATCH_YES)))
4828 1017233 : || (!matched_type && gfc_match (" double precision") == MATCH_YES))
4829 : {
4830 2614 : if (matched_type
4831 2614 : && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
4832 : "intrinsic-type-spec at %C"))
4833 : return MATCH_ERROR;
4834 :
4835 2613 : if (matched_type && gfc_match_char (')') != MATCH_YES)
4836 : {
4837 2 : gfc_error ("Malformed type-spec at %C");
4838 2 : return MATCH_ERROR;
4839 : }
4840 :
4841 2611 : ts->type = BT_REAL;
4842 2611 : ts->kind = gfc_default_double_kind;
4843 2611 : return MATCH_YES;
4844 : }
4845 :
4846 26184 : if ((matched_type && strcmp ("complex", name) == 0)
4847 1014619 : || (!matched_type && gfc_match (" complex") == MATCH_YES))
4848 : {
4849 4057 : ts->type = BT_COMPLEX;
4850 4057 : ts->kind = gfc_default_complex_kind;
4851 4057 : goto get_kind;
4852 : }
4853 :
4854 1010562 : if ((matched_type
4855 26184 : && (strcmp ("doublecomplex", name) == 0
4856 26183 : || (strcmp ("double", name) == 0
4857 2 : && gfc_match (" complex") == MATCH_YES)))
4858 1010562 : || (!matched_type && gfc_match (" double complex") == MATCH_YES))
4859 : {
4860 204 : if (!gfc_notify_std (GFC_STD_GNU, "DOUBLE COMPLEX at %C"))
4861 : return MATCH_ERROR;
4862 :
4863 203 : if (matched_type
4864 203 : && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
4865 : "intrinsic-type-spec at %C"))
4866 : return MATCH_ERROR;
4867 :
4868 203 : if (matched_type && gfc_match_char (')') != MATCH_YES)
4869 : {
4870 2 : gfc_error ("Malformed type-spec at %C");
4871 2 : return MATCH_ERROR;
4872 : }
4873 :
4874 201 : ts->type = BT_COMPLEX;
4875 201 : ts->kind = gfc_default_double_kind;
4876 201 : return MATCH_YES;
4877 : }
4878 :
4879 26181 : if ((matched_type && strcmp ("logical", name) == 0)
4880 1010358 : || (!matched_type && gfc_match (" logical") == MATCH_YES))
4881 : {
4882 11556 : ts->type = BT_LOGICAL;
4883 11556 : ts->kind = gfc_default_logical_kind;
4884 11556 : goto get_kind;
4885 : }
4886 :
4887 998802 : if (matched_type)
4888 : {
4889 26178 : m = gfc_match_actual_arglist (1, &decl_type_param_list, true);
4890 26178 : if (m == MATCH_ERROR)
4891 : return m;
4892 :
4893 26178 : gfc_gobble_whitespace ();
4894 26178 : if (gfc_peek_ascii_char () != ')')
4895 : {
4896 1 : gfc_error ("Malformed type-spec at %C");
4897 1 : return MATCH_ERROR;
4898 : }
4899 26177 : m = gfc_match_char (')'); /* Burn closing ')'. */
4900 : }
4901 :
4902 998801 : if (m != MATCH_YES)
4903 972624 : m = match_record_decl (name);
4904 :
4905 998801 : if (matched_type || m == MATCH_YES)
4906 : {
4907 26521 : ts->type = BT_DERIVED;
4908 : /* We accept record/s/ or type(s) where s is a structure, but we
4909 : * don't need all the extra derived-type stuff for structures. */
4910 26521 : if (gfc_find_symbol (gfc_dt_upper_string (name), NULL, 1, &sym))
4911 : {
4912 1 : gfc_error ("Type name %qs at %C is ambiguous", name);
4913 1 : return MATCH_ERROR;
4914 : }
4915 :
4916 26520 : if (sym && sym->attr.flavor == FL_DERIVED
4917 25370 : && sym->attr.pdt_template
4918 1036 : && gfc_current_state () != COMP_DERIVED)
4919 : {
4920 921 : m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL);
4921 921 : if (m != MATCH_YES)
4922 : return m;
4923 906 : gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type);
4924 906 : ts->u.derived = sym;
4925 906 : const char* lower = gfc_dt_lower_string (sym->name);
4926 906 : size_t len = strlen (lower);
4927 : /* Reallocate with sufficient size. */
4928 906 : if (len > GFC_MAX_SYMBOL_LEN)
4929 2 : name = XALLOCAVEC (char, len + 1);
4930 906 : memcpy (name, lower, len);
4931 906 : name[len] = '\0';
4932 : }
4933 :
4934 26505 : if (sym && sym->attr.flavor == FL_STRUCT)
4935 : {
4936 361 : ts->u.derived = sym;
4937 361 : return MATCH_YES;
4938 : }
4939 : /* Actually a derived type. */
4940 : }
4941 :
4942 : else
4943 : {
4944 : /* Match nested STRUCTURE declarations; only valid within another
4945 : structure declaration. */
4946 972280 : if (flag_dec_structure
4947 8032 : && (gfc_current_state () == COMP_STRUCTURE
4948 7570 : || gfc_current_state () == COMP_MAP))
4949 : {
4950 732 : m = gfc_match (" structure");
4951 732 : if (m == MATCH_YES)
4952 : {
4953 27 : m = gfc_match_structure_decl ();
4954 27 : if (m == MATCH_YES)
4955 : {
4956 : /* gfc_new_block is updated by match_structure_decl. */
4957 26 : ts->type = BT_DERIVED;
4958 26 : ts->u.derived = gfc_new_block;
4959 26 : return MATCH_YES;
4960 : }
4961 : }
4962 706 : if (m == MATCH_ERROR)
4963 : return MATCH_ERROR;
4964 : }
4965 :
4966 : /* Match CLASS declarations. */
4967 972253 : m = gfc_match (" class ( * )");
4968 972253 : if (m == MATCH_ERROR)
4969 : return MATCH_ERROR;
4970 972253 : else if (m == MATCH_YES)
4971 : {
4972 2021 : gfc_symbol *upe;
4973 2021 : gfc_symtree *st;
4974 2021 : ts->type = BT_CLASS;
4975 2021 : gfc_find_symbol ("STAR", gfc_current_ns, 1, &upe);
4976 2021 : if (upe == NULL)
4977 : {
4978 1219 : upe = gfc_new_symbol ("STAR", gfc_current_ns);
4979 1219 : st = gfc_new_symtree (&gfc_current_ns->sym_root, "STAR");
4980 1219 : st->n.sym = upe;
4981 1219 : gfc_set_sym_referenced (upe);
4982 1219 : upe->refs++;
4983 1219 : upe->ts.type = BT_VOID;
4984 1219 : upe->attr.unlimited_polymorphic = 1;
4985 : /* This is essential to force the construction of
4986 : unlimited polymorphic component class containers. */
4987 1219 : upe->attr.zero_comp = 1;
4988 1219 : if (!gfc_add_flavor (&upe->attr, FL_DERIVED, NULL,
4989 : &gfc_current_locus))
4990 : return MATCH_ERROR;
4991 : }
4992 : else
4993 : {
4994 802 : st = gfc_get_tbp_symtree (&gfc_current_ns->sym_root, "STAR");
4995 802 : st->n.sym = upe;
4996 802 : upe->refs++;
4997 : }
4998 2021 : ts->u.derived = upe;
4999 2021 : return m;
5000 : }
5001 :
5002 970232 : m = gfc_match (" class (");
5003 :
5004 970232 : if (m == MATCH_YES)
5005 9221 : m = gfc_match ("%n", name);
5006 : else
5007 : return m;
5008 :
5009 9221 : if (m != MATCH_YES)
5010 : return m;
5011 9221 : ts->type = BT_CLASS;
5012 :
5013 9221 : if (!gfc_notify_std (GFC_STD_F2003, "CLASS statement at %C"))
5014 : return MATCH_ERROR;
5015 :
5016 9220 : m = gfc_match_actual_arglist (1, &decl_type_param_list, true);
5017 9220 : if (m == MATCH_ERROR)
5018 : return m;
5019 :
5020 9220 : m = gfc_match_char (')');
5021 9220 : if (m != MATCH_YES)
5022 : return m;
5023 : }
5024 :
5025 : /* This picks up function declarations with a PDT typespec. Since a
5026 : pdt_type has been generated, there is no more to do. Within the
5027 : function body, this type must be used for the typespec so that
5028 : the "being used before it is defined warning" does not arise. */
5029 35364 : if (ts->type == BT_DERIVED
5030 26144 : && sym && sym->attr.pdt_type
5031 36270 : && (gfc_current_state () == COMP_CONTAINS
5032 890 : || (gfc_current_state () == COMP_FUNCTION
5033 280 : && gfc_current_block ()->ts.type == BT_DERIVED
5034 60 : && gfc_current_block ()->ts.u.derived == sym
5035 30 : && !gfc_find_symtree (gfc_current_ns->sym_root,
5036 : sym->name))))
5037 : {
5038 42 : if (gfc_current_state () == COMP_FUNCTION)
5039 : {
5040 26 : gfc_symtree *pdt_st;
5041 26 : pdt_st = gfc_new_symtree (&gfc_current_ns->sym_root,
5042 : sym->name);
5043 26 : pdt_st->n.sym = sym;
5044 26 : sym->refs++;
5045 : }
5046 42 : ts->u.derived = sym;
5047 42 : return MATCH_YES;
5048 : }
5049 :
5050 : /* Defer association of the derived type until the end of the
5051 : specification block. However, if the derived type can be
5052 : found, add it to the typespec. */
5053 35322 : if (gfc_matching_function)
5054 : {
5055 1043 : ts->u.derived = NULL;
5056 1043 : if (gfc_current_state () != COMP_INTERFACE
5057 1043 : && !gfc_find_symbol (name, NULL, 1, &sym) && sym)
5058 : {
5059 512 : sym = gfc_find_dt_in_generic (sym);
5060 512 : ts->u.derived = sym;
5061 : }
5062 : return MATCH_YES;
5063 : }
5064 :
5065 : /* Search for the name but allow the components to be defined later. If
5066 : type = -1, this typespec has been seen in a function declaration but
5067 : the type could not be accessed at that point. The actual derived type is
5068 : stored in a symtree with the first letter of the name capitalized; the
5069 : symtree with the all lower-case name contains the associated
5070 : generic function. */
5071 34279 : dt_name = gfc_dt_upper_string (name);
5072 34279 : sym = NULL;
5073 34279 : dt_sym = NULL;
5074 34279 : if (ts->kind != -1)
5075 : {
5076 33067 : gfc_get_ha_symbol (name, &sym);
5077 33067 : if (sym->generic && gfc_find_symbol (dt_name, NULL, 0, &dt_sym))
5078 : {
5079 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5080 0 : return MATCH_ERROR;
5081 : }
5082 33067 : if (sym->generic && !dt_sym)
5083 14564 : dt_sym = gfc_find_dt_in_generic (sym);
5084 :
5085 : /* Host associated PDTs can get confused with their constructors
5086 : because they are instantiated in the template's namespace. */
5087 33067 : if (!dt_sym)
5088 : {
5089 968 : if (gfc_find_symbol (dt_name, NULL, 1, &dt_sym))
5090 : {
5091 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5092 0 : return MATCH_ERROR;
5093 : }
5094 968 : if (dt_sym && !dt_sym->attr.pdt_type)
5095 0 : dt_sym = NULL;
5096 : }
5097 : }
5098 1212 : else if (ts->kind == -1)
5099 : {
5100 2424 : int iface = gfc_state_stack->previous->state != COMP_INTERFACE
5101 1212 : || gfc_current_ns->has_import_set;
5102 1212 : gfc_find_symbol (name, NULL, iface, &sym);
5103 1212 : if (sym && sym->generic && gfc_find_symbol (dt_name, NULL, 1, &dt_sym))
5104 : {
5105 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5106 0 : return MATCH_ERROR;
5107 : }
5108 1212 : if (sym && sym->generic && !dt_sym)
5109 2 : dt_sym = gfc_find_dt_in_generic (sym);
5110 :
5111 1212 : ts->kind = 0;
5112 1212 : if (sym == NULL)
5113 : return MATCH_NO;
5114 : }
5115 :
5116 34262 : if ((sym->attr.flavor != FL_UNKNOWN && sym->attr.flavor != FL_STRUCT
5117 33516 : && !(sym->attr.flavor == FL_PROCEDURE && sym->attr.generic))
5118 34260 : || sym->attr.subroutine)
5119 : {
5120 2 : gfc_error ("Type name %qs at %C conflicts with previously declared "
5121 : "entity at %L, which has the same name", name,
5122 : &sym->declared_at);
5123 2 : return MATCH_ERROR;
5124 : }
5125 :
5126 34260 : if (dt_sym && decl_type_param_list
5127 940 : && dt_sym->attr.flavor == FL_DERIVED
5128 940 : && !dt_sym->attr.pdt_type
5129 250 : && !dt_sym->attr.pdt_template)
5130 : {
5131 1 : gfc_error ("Type %qs is not parameterized and so the type parameter spec "
5132 : "list at %C may not appear", dt_sym->name);
5133 1 : return MATCH_ERROR;
5134 : }
5135 :
5136 34259 : if (sym && sym->attr.flavor == FL_DERIVED
5137 : && sym->attr.pdt_template
5138 : && gfc_current_state () != COMP_DERIVED)
5139 : {
5140 : m = gfc_get_pdt_instance (decl_type_param_list, &sym, NULL);
5141 : if (m != MATCH_YES)
5142 : return m;
5143 : gcc_assert (!sym->attr.pdt_template && sym->attr.pdt_type);
5144 : ts->u.derived = sym;
5145 : strcpy (name, gfc_dt_lower_string (sym->name));
5146 : }
5147 :
5148 34259 : gfc_save_symbol_data (sym);
5149 34259 : gfc_set_sym_referenced (sym);
5150 34259 : if (!sym->attr.generic
5151 34259 : && !gfc_add_generic (&sym->attr, sym->name, NULL))
5152 : return MATCH_ERROR;
5153 :
5154 34259 : if (!sym->attr.function
5155 34259 : && !gfc_add_function (&sym->attr, sym->name, NULL))
5156 : return MATCH_ERROR;
5157 :
5158 34259 : if (dt_sym && dt_sym->attr.flavor == FL_DERIVED
5159 34127 : && dt_sym->attr.pdt_template
5160 260 : && gfc_current_state () != COMP_DERIVED)
5161 : {
5162 133 : m = gfc_get_pdt_instance (decl_type_param_list, &dt_sym, NULL);
5163 133 : if (m != MATCH_YES)
5164 : return m;
5165 133 : gcc_assert (!dt_sym->attr.pdt_template && dt_sym->attr.pdt_type);
5166 : }
5167 :
5168 34259 : if (!dt_sym)
5169 : {
5170 132 : gfc_interface *intr, *head;
5171 :
5172 : /* Use upper case to save the actual derived-type symbol. */
5173 132 : gfc_get_symbol (dt_name, NULL, &dt_sym);
5174 132 : dt_sym->name = gfc_get_string ("%s", sym->name);
5175 132 : head = sym->generic;
5176 132 : intr = gfc_get_interface ();
5177 132 : intr->sym = dt_sym;
5178 132 : intr->where = gfc_current_locus;
5179 132 : intr->next = head;
5180 132 : sym->generic = intr;
5181 132 : sym->attr.if_source = IFSRC_DECL;
5182 : }
5183 : else
5184 34127 : gfc_save_symbol_data (dt_sym);
5185 :
5186 34259 : gfc_set_sym_referenced (dt_sym);
5187 :
5188 132 : if (dt_sym->attr.flavor != FL_DERIVED && dt_sym->attr.flavor != FL_STRUCT
5189 34391 : && !gfc_add_flavor (&dt_sym->attr, FL_DERIVED, sym->name, NULL))
5190 : return MATCH_ERROR;
5191 :
5192 34259 : ts->u.derived = dt_sym;
5193 :
5194 34259 : return MATCH_YES;
5195 :
5196 159828 : get_kind:
5197 159828 : if (matched_type
5198 159828 : && !gfc_notify_std (GFC_STD_F2008, "TYPE with "
5199 : "intrinsic-type-spec at %C"))
5200 : return MATCH_ERROR;
5201 :
5202 : /* For all types except double, derived and character, look for an
5203 : optional kind specifier. MATCH_NO is actually OK at this point. */
5204 159825 : if (implicit_flag == 1)
5205 : {
5206 223 : if (matched_type && gfc_match_char (')') != MATCH_YES)
5207 : return MATCH_ERROR;
5208 :
5209 : return MATCH_YES;
5210 : }
5211 :
5212 159602 : if (gfc_current_form == FORM_FREE)
5213 : {
5214 144387 : c = gfc_peek_ascii_char ();
5215 144387 : if (!gfc_is_whitespace (c) && c != '*' && c != '('
5216 71233 : && c != ':' && c != ',')
5217 : {
5218 167 : if (matched_type && c == ')')
5219 : {
5220 3 : gfc_next_ascii_char ();
5221 3 : return MATCH_YES;
5222 : }
5223 164 : gfc_error ("Malformed type-spec at %C");
5224 164 : return MATCH_NO;
5225 : }
5226 : }
5227 :
5228 159435 : m = gfc_match_kind_spec (ts, false);
5229 159435 : if (m == MATCH_ERROR)
5230 : return MATCH_ERROR;
5231 :
5232 159399 : if (m == MATCH_NO && ts->type != BT_CHARACTER)
5233 : {
5234 108092 : m = gfc_match_old_kind_spec (ts);
5235 108092 : if (gfc_validate_kind (ts->type, ts->kind, true) == -1)
5236 : return MATCH_ERROR;
5237 : }
5238 :
5239 159391 : if (matched_type && gfc_match_char (')') != MATCH_YES)
5240 : {
5241 0 : gfc_error ("Malformed type-spec at %C");
5242 0 : return MATCH_ERROR;
5243 : }
5244 :
5245 : /* Defer association of the KIND expression of function results
5246 : until after USE and IMPORT statements. */
5247 4446 : if ((gfc_current_state () == COMP_NONE && gfc_error_flag_test ())
5248 163810 : || gfc_matching_function)
5249 : return MATCH_YES;
5250 :
5251 152158 : if (m == MATCH_NO)
5252 153089 : m = MATCH_YES; /* No kind specifier found. */
5253 :
5254 : return m;
5255 : }
5256 :
5257 :
5258 : /* Match an IMPLICIT NONE statement. Actually, this statement is
5259 : already matched in parse.cc, or we would not end up here in the
5260 : first place. So the only thing we need to check, is if there is
5261 : trailing garbage. If not, the match is successful. */
5262 :
5263 : match
5264 24253 : gfc_match_implicit_none (void)
5265 : {
5266 24253 : char c;
5267 24253 : match m;
5268 24253 : char name[GFC_MAX_SYMBOL_LEN + 1];
5269 24253 : bool type = false;
5270 24253 : bool external = false;
5271 24253 : locus cur_loc = gfc_current_locus;
5272 :
5273 24253 : if (gfc_current_ns->seen_implicit_none
5274 24251 : || gfc_current_ns->has_implicit_none_export)
5275 : {
5276 4 : gfc_error ("Duplicate IMPLICIT NONE statement at %C");
5277 4 : return MATCH_ERROR;
5278 : }
5279 :
5280 24249 : gfc_gobble_whitespace ();
5281 24249 : c = gfc_peek_ascii_char ();
5282 24249 : if (c == '(')
5283 : {
5284 1109 : (void) gfc_next_ascii_char ();
5285 1109 : if (!gfc_notify_std (GFC_STD_F2018, "IMPLICIT NONE with spec list at %C"))
5286 : return MATCH_ERROR;
5287 :
5288 1108 : gfc_gobble_whitespace ();
5289 1108 : if (gfc_peek_ascii_char () == ')')
5290 : {
5291 1 : (void) gfc_next_ascii_char ();
5292 1 : type = true;
5293 : }
5294 : else
5295 3297 : for(;;)
5296 : {
5297 2202 : m = gfc_match (" %n", name);
5298 2202 : if (m != MATCH_YES)
5299 : return MATCH_ERROR;
5300 :
5301 2202 : if (strcmp (name, "type") == 0)
5302 : type = true;
5303 1107 : else if (strcmp (name, "external") == 0)
5304 : external = true;
5305 : else
5306 : return MATCH_ERROR;
5307 :
5308 2202 : gfc_gobble_whitespace ();
5309 2202 : c = gfc_next_ascii_char ();
5310 2202 : if (c == ',')
5311 1095 : continue;
5312 1107 : if (c == ')')
5313 : break;
5314 : return MATCH_ERROR;
5315 : }
5316 : }
5317 : else
5318 : type = true;
5319 :
5320 24248 : if (gfc_match_eos () != MATCH_YES)
5321 : return MATCH_ERROR;
5322 :
5323 24248 : gfc_set_implicit_none (type, external, &cur_loc);
5324 :
5325 24248 : return MATCH_YES;
5326 : }
5327 :
5328 :
5329 : /* Match the letter range(s) of an IMPLICIT statement. */
5330 :
5331 : static match
5332 600 : match_implicit_range (void)
5333 : {
5334 600 : char c, c1, c2;
5335 600 : int inner;
5336 600 : locus cur_loc;
5337 :
5338 600 : cur_loc = gfc_current_locus;
5339 :
5340 600 : gfc_gobble_whitespace ();
5341 600 : c = gfc_next_ascii_char ();
5342 600 : if (c != '(')
5343 : {
5344 59 : gfc_error ("Missing character range in IMPLICIT at %C");
5345 59 : goto bad;
5346 : }
5347 :
5348 : inner = 1;
5349 1195 : while (inner)
5350 : {
5351 722 : gfc_gobble_whitespace ();
5352 722 : c1 = gfc_next_ascii_char ();
5353 722 : if (!ISALPHA (c1))
5354 33 : goto bad;
5355 :
5356 689 : gfc_gobble_whitespace ();
5357 689 : c = gfc_next_ascii_char ();
5358 :
5359 689 : switch (c)
5360 : {
5361 201 : case ')':
5362 201 : inner = 0; /* Fall through. */
5363 :
5364 : case ',':
5365 : c2 = c1;
5366 : break;
5367 :
5368 439 : case '-':
5369 439 : gfc_gobble_whitespace ();
5370 439 : c2 = gfc_next_ascii_char ();
5371 439 : if (!ISALPHA (c2))
5372 0 : goto bad;
5373 :
5374 439 : gfc_gobble_whitespace ();
5375 439 : c = gfc_next_ascii_char ();
5376 :
5377 439 : if ((c != ',') && (c != ')'))
5378 0 : goto bad;
5379 439 : if (c == ')')
5380 272 : inner = 0;
5381 :
5382 : break;
5383 :
5384 35 : default:
5385 35 : goto bad;
5386 : }
5387 :
5388 654 : if (c1 > c2)
5389 : {
5390 0 : gfc_error ("Letters must be in alphabetic order in "
5391 : "IMPLICIT statement at %C");
5392 0 : goto bad;
5393 : }
5394 :
5395 : /* See if we can add the newly matched range to the pending
5396 : implicits from this IMPLICIT statement. We do not check for
5397 : conflicts with whatever earlier IMPLICIT statements may have
5398 : set. This is done when we've successfully finished matching
5399 : the current one. */
5400 654 : if (!gfc_add_new_implicit_range (c1, c2))
5401 0 : goto bad;
5402 : }
5403 :
5404 : return MATCH_YES;
5405 :
5406 127 : bad:
5407 127 : gfc_syntax_error (ST_IMPLICIT);
5408 :
5409 127 : gfc_current_locus = cur_loc;
5410 127 : return MATCH_ERROR;
5411 : }
5412 :
5413 :
5414 : /* Match an IMPLICIT statement, storing the types for
5415 : gfc_set_implicit() if the statement is accepted by the parser.
5416 : There is a strange looking, but legal syntactic construction
5417 : possible. It looks like:
5418 :
5419 : IMPLICIT INTEGER (a-b) (c-d)
5420 :
5421 : This is legal if "a-b" is a constant expression that happens to
5422 : equal one of the legal kinds for integers. The real problem
5423 : happens with an implicit specification that looks like:
5424 :
5425 : IMPLICIT INTEGER (a-b)
5426 :
5427 : In this case, a typespec matcher that is "greedy" (as most of the
5428 : matchers are) gobbles the character range as a kindspec, leaving
5429 : nothing left. We therefore have to go a bit more slowly in the
5430 : matching process by inhibiting the kindspec checking during
5431 : typespec matching and checking for a kind later. */
5432 :
5433 : match
5434 24679 : gfc_match_implicit (void)
5435 : {
5436 24679 : gfc_typespec ts;
5437 24679 : locus cur_loc;
5438 24679 : char c;
5439 24679 : match m;
5440 :
5441 24679 : if (gfc_current_ns->seen_implicit_none)
5442 : {
5443 4 : gfc_error ("IMPLICIT statement at %C following an IMPLICIT NONE (type) "
5444 : "statement");
5445 4 : return MATCH_ERROR;
5446 : }
5447 :
5448 24675 : gfc_clear_ts (&ts);
5449 :
5450 : /* We don't allow empty implicit statements. */
5451 24675 : if (gfc_match_eos () == MATCH_YES)
5452 : {
5453 0 : gfc_error ("Empty IMPLICIT statement at %C");
5454 0 : return MATCH_ERROR;
5455 : }
5456 :
5457 24704 : do
5458 : {
5459 : /* First cleanup. */
5460 24704 : gfc_clear_new_implicit ();
5461 :
5462 : /* A basic type is mandatory here. */
5463 24704 : m = gfc_match_decl_type_spec (&ts, 1);
5464 24704 : if (m == MATCH_ERROR)
5465 0 : goto error;
5466 24704 : if (m == MATCH_NO)
5467 24251 : goto syntax;
5468 :
5469 453 : cur_loc = gfc_current_locus;
5470 453 : m = match_implicit_range ();
5471 :
5472 453 : if (m == MATCH_YES)
5473 : {
5474 : /* We may have <TYPE> (<RANGE>). */
5475 326 : gfc_gobble_whitespace ();
5476 326 : c = gfc_peek_ascii_char ();
5477 326 : if (c == ',' || c == '\n' || c == ';' || c == '!')
5478 : {
5479 : /* Check for CHARACTER with no length parameter. */
5480 299 : if (ts.type == BT_CHARACTER && !ts.u.cl)
5481 : {
5482 32 : ts.kind = gfc_default_character_kind;
5483 32 : ts.u.cl = gfc_new_charlen (gfc_current_ns, NULL);
5484 32 : ts.u.cl->length = gfc_get_int_expr (gfc_charlen_int_kind,
5485 : NULL, 1);
5486 : }
5487 :
5488 : /* Record the Successful match. */
5489 299 : if (!gfc_merge_new_implicit (&ts))
5490 : return MATCH_ERROR;
5491 297 : if (c == ',')
5492 28 : c = gfc_next_ascii_char ();
5493 269 : else if (gfc_match_eos () == MATCH_ERROR)
5494 0 : goto error;
5495 297 : continue;
5496 : }
5497 :
5498 27 : gfc_current_locus = cur_loc;
5499 : }
5500 :
5501 : /* Discard the (incorrectly) matched range. */
5502 154 : gfc_clear_new_implicit ();
5503 :
5504 : /* Last chance -- check <TYPE> <SELECTOR> (<RANGE>). */
5505 154 : if (ts.type == BT_CHARACTER)
5506 74 : m = gfc_match_char_spec (&ts);
5507 80 : else if (gfc_numeric_ts(&ts) || ts.type == BT_LOGICAL)
5508 : {
5509 76 : m = gfc_match_kind_spec (&ts, false);
5510 76 : if (m == MATCH_NO)
5511 : {
5512 40 : m = gfc_match_old_kind_spec (&ts);
5513 40 : if (m == MATCH_ERROR)
5514 0 : goto error;
5515 40 : if (m == MATCH_NO)
5516 0 : goto syntax;
5517 : }
5518 : }
5519 154 : if (m == MATCH_ERROR)
5520 7 : goto error;
5521 :
5522 147 : m = match_implicit_range ();
5523 147 : if (m == MATCH_ERROR)
5524 0 : goto error;
5525 147 : if (m == MATCH_NO)
5526 : goto syntax;
5527 :
5528 147 : gfc_gobble_whitespace ();
5529 147 : c = gfc_next_ascii_char ();
5530 147 : if (c != ',' && gfc_match_eos () != MATCH_YES)
5531 0 : goto syntax;
5532 :
5533 147 : if (!gfc_merge_new_implicit (&ts))
5534 : return MATCH_ERROR;
5535 : }
5536 444 : while (c == ',');
5537 :
5538 : return MATCH_YES;
5539 :
5540 24251 : syntax:
5541 24251 : gfc_syntax_error (ST_IMPLICIT);
5542 :
5543 24679 : error:
5544 : return MATCH_ERROR;
5545 : }
5546 :
5547 :
5548 : /* Match the IMPORT statement. IMPORT was added to F2003 as
5549 :
5550 : R1209 import-stmt is IMPORT [[ :: ] import-name-list ]
5551 :
5552 : C1210 (R1209) The IMPORT statement is allowed only in an interface-body.
5553 :
5554 : C1211 (R1209) Each import-name shall be the name of an entity in the
5555 : host scoping unit.
5556 :
5557 : under the description of an interface block. Under F2008, IMPORT was
5558 : split out of the interface block description to 12.4.3.3 and C1210
5559 : became
5560 :
5561 : C1210 (R1209) The IMPORT statement is allowed only in an interface-body
5562 : that is not a module procedure interface body.
5563 :
5564 : Finally, F2018, section 8.8, has changed the IMPORT statement to
5565 :
5566 : R867 import-stmt is IMPORT [[ :: ] import-name-list ]
5567 : or IMPORT, ONLY : import-name-list
5568 : or IMPORT, NONE
5569 : or IMPORT, ALL
5570 :
5571 : C896 (R867) An IMPORT statement shall not appear in the scoping unit of
5572 : a main-program, external-subprogram, module, or block-data.
5573 :
5574 : C897 (R867) Each import-name shall be the name of an entity in the host
5575 : scoping unit.
5576 :
5577 : C898 If any IMPORT statement in a scoping unit has an ONLY specifier,
5578 : all IMPORT statements in that scoping unit shall have an ONLY
5579 : specifier.
5580 :
5581 : C899 IMPORT, NONE shall not appear in the scoping unit of a submodule.
5582 :
5583 : C8100 If an IMPORT, NONE or IMPORT, ALL statement appears in a scoping
5584 : unit, no other IMPORT statement shall appear in that scoping unit.
5585 :
5586 : C8101 Within an interface body, an entity that is accessed by host
5587 : association shall be accessible by host or use association within
5588 : the host scoping unit, or explicitly declared prior to the interface
5589 : body.
5590 :
5591 : C8102 An entity whose name appears as an import-name or which is made
5592 : accessible by an IMPORT, ALL statement shall not appear in any
5593 : context described in 19.5.1.4 that would cause the host entity
5594 : of that name to be inaccessible. */
5595 :
5596 : match
5597 4032 : gfc_match_import (void)
5598 : {
5599 4032 : char name[GFC_MAX_SYMBOL_LEN + 1];
5600 4032 : match m;
5601 4032 : gfc_symbol *sym;
5602 4032 : gfc_symtree *st;
5603 4032 : bool f2018_allowed = gfc_option.allow_std & ~GFC_STD_OPT_F08;;
5604 4032 : importstate current_import_state = gfc_current_ns->import_state;
5605 :
5606 4032 : if (!f2018_allowed
5607 13 : && (gfc_current_ns->proc_name == NULL
5608 12 : || gfc_current_ns->proc_name->attr.if_source != IFSRC_IFBODY))
5609 : {
5610 3 : gfc_error ("IMPORT statement at %C only permitted in "
5611 : "an INTERFACE body");
5612 3 : return MATCH_ERROR;
5613 : }
5614 : else if (f2018_allowed
5615 4019 : && (!gfc_current_ns->parent || gfc_current_ns->is_block_data))
5616 4 : goto C897;
5617 :
5618 4015 : if (f2018_allowed
5619 4015 : && (current_import_state == IMPORT_ALL
5620 4015 : || current_import_state == IMPORT_NONE))
5621 2 : goto C8100;
5622 :
5623 4023 : if (gfc_current_ns->proc_name
5624 4022 : && gfc_current_ns->proc_name->attr.module_procedure)
5625 : {
5626 1 : gfc_error ("F2008: C1210 IMPORT statement at %C is not permitted "
5627 : "in a module procedure interface body");
5628 1 : return MATCH_ERROR;
5629 : }
5630 :
5631 4022 : if (!gfc_notify_std (GFC_STD_F2003, "IMPORT statement at %C"))
5632 : return MATCH_ERROR;
5633 :
5634 4018 : gfc_current_ns->import_state = IMPORT_NOT_SET;
5635 4018 : if (f2018_allowed)
5636 : {
5637 4012 : if (gfc_match (" , none") == MATCH_YES)
5638 : {
5639 8 : if (current_import_state == IMPORT_ONLY)
5640 0 : goto C898;
5641 8 : if (gfc_current_state () == COMP_SUBMODULE)
5642 0 : goto C899;
5643 8 : gfc_current_ns->import_state = IMPORT_NONE;
5644 : }
5645 4004 : else if (gfc_match (" , only :") == MATCH_YES)
5646 : {
5647 19 : if (current_import_state != IMPORT_NOT_SET
5648 19 : && current_import_state != IMPORT_ONLY)
5649 0 : goto C898;
5650 19 : gfc_current_ns->import_state = IMPORT_ONLY;
5651 : }
5652 3985 : else if (gfc_match (" , all") == MATCH_YES)
5653 : {
5654 1 : if (current_import_state == IMPORT_ONLY)
5655 0 : goto C898;
5656 1 : gfc_current_ns->import_state = IMPORT_ALL;
5657 : }
5658 :
5659 4012 : if (current_import_state != IMPORT_NOT_SET
5660 6 : && (gfc_current_ns->import_state == IMPORT_NONE
5661 6 : || gfc_current_ns->import_state == IMPORT_ALL))
5662 0 : goto C8100;
5663 : }
5664 :
5665 : /* F2008 IMPORT<eos> is distinct from F2018 IMPORT, ALL. */
5666 4018 : if (gfc_match_eos () == MATCH_YES)
5667 : {
5668 : /* This is the F2008 variant. */
5669 340 : if (gfc_current_ns->import_state == IMPORT_NOT_SET)
5670 : {
5671 331 : if (current_import_state == IMPORT_ONLY)
5672 0 : goto C898;
5673 331 : gfc_current_ns->import_state = IMPORT_F2008;
5674 : }
5675 :
5676 : /* Host variables should be imported. */
5677 340 : if (gfc_current_ns->import_state != IMPORT_NONE)
5678 332 : gfc_current_ns->has_import_set = 1;
5679 : return MATCH_YES;
5680 : }
5681 :
5682 3678 : if (gfc_match (" ::") == MATCH_YES
5683 3678 : && gfc_current_ns->import_state != IMPORT_ONLY)
5684 : {
5685 1170 : if (gfc_match_eos () == MATCH_YES)
5686 1 : goto expecting_list;
5687 1169 : gfc_current_ns->import_state = IMPORT_F2008;
5688 : }
5689 2508 : else if (gfc_current_ns->import_state == IMPORT_ONLY)
5690 : {
5691 19 : if (gfc_match_eos () == MATCH_YES)
5692 0 : goto expecting_list;
5693 : }
5694 :
5695 4366 : for(;;)
5696 : {
5697 4366 : sym = NULL;
5698 4366 : m = gfc_match (" %n", name);
5699 4366 : switch (m)
5700 : {
5701 4366 : case MATCH_YES:
5702 : /* Before checking if the symbol is available from host
5703 : association into a SUBROUTINE or FUNCTION within an
5704 : INTERFACE, check if it is already in local scope. */
5705 4366 : gfc_find_symbol (name, gfc_current_ns, 1, &sym);
5706 4366 : if (sym
5707 25 : && gfc_state_stack->previous
5708 25 : && gfc_state_stack->previous->state == COMP_INTERFACE)
5709 : {
5710 2 : gfc_error ("import-name %qs at %C is in the "
5711 : "local scope", name);
5712 2 : return MATCH_ERROR;
5713 : }
5714 :
5715 4364 : if (gfc_current_ns->parent != NULL
5716 4364 : && gfc_find_symbol (name, gfc_current_ns->parent, 1, &sym))
5717 : {
5718 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5719 0 : return MATCH_ERROR;
5720 : }
5721 4364 : else if (!sym
5722 5 : && gfc_current_ns->proc_name
5723 4 : && gfc_current_ns->proc_name->ns->parent
5724 4365 : && gfc_find_symbol (name,
5725 : gfc_current_ns->proc_name->ns->parent,
5726 : 1, &sym))
5727 : {
5728 0 : gfc_error ("Type name %qs at %C is ambiguous", name);
5729 0 : return MATCH_ERROR;
5730 : }
5731 :
5732 4364 : if (sym == NULL)
5733 : {
5734 5 : if (gfc_current_ns->proc_name
5735 4 : && gfc_current_ns->proc_name->attr.if_source == IFSRC_IFBODY)
5736 : {
5737 1 : gfc_error ("Cannot IMPORT %qs from host scoping unit "
5738 : "at %C - does not exist.", name);
5739 1 : return MATCH_ERROR;
5740 : }
5741 : else
5742 : {
5743 : /* This might be a procedure that has not yet been parsed. If
5744 : so gfc_fixup_sibling_symbols will replace this symbol with
5745 : that of the procedure. */
5746 4 : gfc_get_sym_tree (name, gfc_current_ns, &st, false,
5747 : &gfc_current_locus);
5748 4 : st->n.sym->refs++;
5749 4 : st->n.sym->attr.imported = 1;
5750 4 : st->import_only = 1;
5751 4 : goto next_item;
5752 : }
5753 : }
5754 :
5755 4359 : st = gfc_find_symtree (gfc_current_ns->sym_root, name);
5756 4359 : if (st && st->n.sym && st->n.sym->attr.imported)
5757 : {
5758 0 : gfc_warning (0, "%qs is already IMPORTed from host scoping unit "
5759 : "at %C", name);
5760 0 : goto next_item;
5761 : }
5762 :
5763 4359 : st = gfc_new_symtree (&gfc_current_ns->sym_root, name);
5764 4359 : st->n.sym = sym;
5765 4359 : sym->refs++;
5766 4359 : sym->attr.imported = 1;
5767 4359 : st->import_only = 1;
5768 :
5769 4359 : if (sym->attr.generic && (sym = gfc_find_dt_in_generic (sym)))
5770 : {
5771 : /* The actual derived type is stored in a symtree with the first
5772 : letter of the name capitalized; the symtree with the all
5773 : lower-case name contains the associated generic function. */
5774 599 : st = gfc_new_symtree (&gfc_current_ns->sym_root,
5775 : gfc_dt_upper_string (name));
5776 599 : st->n.sym = sym;
5777 599 : sym->refs++;
5778 599 : sym->attr.imported = 1;
5779 599 : st->import_only = 1;
5780 : }
5781 :
5782 4359 : goto next_item;
5783 :
5784 : case MATCH_NO:
5785 : break;
5786 :
5787 : case MATCH_ERROR:
5788 : return MATCH_ERROR;
5789 : }
5790 :
5791 4363 : next_item:
5792 4363 : if (gfc_match_eos () == MATCH_YES)
5793 : break;
5794 689 : if (gfc_match_char (',') != MATCH_YES)
5795 0 : goto syntax;
5796 : }
5797 :
5798 : return MATCH_YES;
5799 :
5800 0 : syntax:
5801 0 : gfc_error ("Syntax error in IMPORT statement at %C");
5802 0 : return MATCH_ERROR;
5803 :
5804 4 : C897:
5805 4 : gfc_error ("F2018: C897 IMPORT statement at %C cannot appear in a main "
5806 : "program, an external subprogram, a module or block data");
5807 4 : return MATCH_ERROR;
5808 :
5809 0 : C898:
5810 0 : gfc_error ("F2018: C898 IMPORT statement at %C is not permitted because "
5811 : "a scoping unit has an ONLY specifier, can only have IMPORT "
5812 : "with an ONLY specifier");
5813 0 : return MATCH_ERROR;
5814 :
5815 0 : C899:
5816 0 : gfc_error ("F2018: C899 IMPORT, NONE shall not appear in the scoping unit"
5817 : " of a submodule as at %C");
5818 0 : return MATCH_ERROR;
5819 :
5820 2 : C8100:
5821 4 : gfc_error ("F2018: C8100 IMPORT statement at %C is not permitted because "
5822 : "%s has already been declared, which must be unique in the "
5823 : "scoping unit",
5824 2 : gfc_current_ns->import_state == IMPORT_ALL ? "IMPORT, ALL" :
5825 : "IMPORT, NONE");
5826 2 : return MATCH_ERROR;
5827 :
5828 1 : expecting_list:
5829 1 : gfc_error ("Expecting list of named entities at %C");
5830 1 : return MATCH_ERROR;
5831 : }
5832 :
5833 :
5834 : /* A minimal implementation of gfc_match without whitespace, escape
5835 : characters or variable arguments. Returns true if the next
5836 : characters match the TARGET template exactly. */
5837 :
5838 : static bool
5839 147858 : match_string_p (const char *target)
5840 : {
5841 147858 : const char *p;
5842 :
5843 928871 : for (p = target; *p; p++)
5844 781014 : if ((char) gfc_next_ascii_char () != *p)
5845 : return false;
5846 : return true;
5847 : }
5848 :
5849 : /* Matches an attribute specification including array specs. If
5850 : successful, leaves the variables current_attr and current_as
5851 : holding the specification. Also sets the colon_seen variable for
5852 : later use by matchers associated with initializations.
5853 :
5854 : This subroutine is a little tricky in the sense that we don't know
5855 : if we really have an attr-spec until we hit the double colon.
5856 : Until that time, we can only return MATCH_NO. This forces us to
5857 : check for duplicate specification at this level. */
5858 :
5859 : static match
5860 218811 : match_attr_spec (void)
5861 : {
5862 : /* Modifiers that can exist in a type statement. */
5863 218811 : enum
5864 : { GFC_DECL_BEGIN = 0, DECL_ALLOCATABLE = GFC_DECL_BEGIN,
5865 : DECL_IN = INTENT_IN, DECL_OUT = INTENT_OUT, DECL_INOUT = INTENT_INOUT,
5866 : DECL_DIMENSION, DECL_EXTERNAL,
5867 : DECL_INTRINSIC, DECL_OPTIONAL,
5868 : DECL_PARAMETER, DECL_POINTER, DECL_PROTECTED, DECL_PRIVATE,
5869 : DECL_STATIC, DECL_AUTOMATIC,
5870 : DECL_PUBLIC, DECL_SAVE, DECL_TARGET, DECL_VALUE, DECL_VOLATILE,
5871 : DECL_IS_BIND_C, DECL_CODIMENSION, DECL_ASYNCHRONOUS, DECL_CONTIGUOUS,
5872 : DECL_LEN, DECL_KIND, DECL_NONE, GFC_DECL_END /* Sentinel */
5873 : };
5874 :
5875 : /* GFC_DECL_END is the sentinel, index starts at 0. */
5876 : #define NUM_DECL GFC_DECL_END
5877 :
5878 : /* Make sure that values from sym_intent are safe to be used here. */
5879 218811 : gcc_assert (INTENT_IN > 0);
5880 :
5881 218811 : locus start, seen_at[NUM_DECL];
5882 218811 : int seen[NUM_DECL];
5883 218811 : unsigned int d;
5884 218811 : const char *attr;
5885 218811 : match m;
5886 218811 : bool t;
5887 :
5888 218811 : gfc_clear_attr (¤t_attr);
5889 218811 : start = gfc_current_locus;
5890 :
5891 218811 : current_as = NULL;
5892 218811 : colon_seen = 0;
5893 218811 : attr_seen = 0;
5894 :
5895 : /* See if we get all of the keywords up to the final double colon. */
5896 5907897 : for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
5897 5689086 : seen[d] = 0;
5898 :
5899 338680 : for (;;)
5900 : {
5901 338680 : char ch;
5902 :
5903 338680 : d = DECL_NONE;
5904 338680 : gfc_gobble_whitespace ();
5905 :
5906 338680 : ch = gfc_next_ascii_char ();
5907 338680 : if (ch == ':')
5908 : {
5909 : /* This is the successful exit condition for the loop. */
5910 184958 : if (gfc_next_ascii_char () == ':')
5911 : break;
5912 : }
5913 153722 : else if (ch == ',')
5914 : {
5915 119881 : gfc_gobble_whitespace ();
5916 119881 : switch (gfc_peek_ascii_char ())
5917 : {
5918 18721 : case 'a':
5919 18721 : gfc_next_ascii_char ();
5920 18721 : switch (gfc_next_ascii_char ())
5921 : {
5922 18655 : case 'l':
5923 18655 : if (match_string_p ("locatable"))
5924 : {
5925 : /* Matched "allocatable". */
5926 : d = DECL_ALLOCATABLE;
5927 : }
5928 : break;
5929 :
5930 25 : case 's':
5931 25 : if (match_string_p ("ynchronous"))
5932 : {
5933 : /* Matched "asynchronous". */
5934 : d = DECL_ASYNCHRONOUS;
5935 : }
5936 : break;
5937 :
5938 41 : case 'u':
5939 41 : if (match_string_p ("tomatic"))
5940 : {
5941 : /* Matched "automatic". */
5942 : d = DECL_AUTOMATIC;
5943 : }
5944 : break;
5945 : }
5946 : break;
5947 :
5948 164 : case 'b':
5949 : /* Try and match the bind(c). */
5950 164 : m = gfc_match_bind_c (NULL, true);
5951 164 : if (m == MATCH_YES)
5952 : d = DECL_IS_BIND_C;
5953 0 : else if (m == MATCH_ERROR)
5954 0 : goto cleanup;
5955 : break;
5956 :
5957 2164 : case 'c':
5958 2164 : gfc_next_ascii_char ();
5959 2164 : if ('o' != gfc_next_ascii_char ())
5960 : break;
5961 2163 : switch (gfc_next_ascii_char ())
5962 : {
5963 68 : case 'd':
5964 68 : if (match_string_p ("imension"))
5965 : {
5966 : d = DECL_CODIMENSION;
5967 : break;
5968 : }
5969 : /* FALLTHRU */
5970 2095 : case 'n':
5971 2095 : if (match_string_p ("tiguous"))
5972 : {
5973 : d = DECL_CONTIGUOUS;
5974 : break;
5975 : }
5976 : }
5977 : break;
5978 :
5979 19753 : case 'd':
5980 19753 : if (match_string_p ("dimension"))
5981 : d = DECL_DIMENSION;
5982 : break;
5983 :
5984 177 : case 'e':
5985 177 : if (match_string_p ("external"))
5986 : d = DECL_EXTERNAL;
5987 : break;
5988 :
5989 28142 : case 'i':
5990 28142 : if (match_string_p ("int"))
5991 : {
5992 28142 : ch = gfc_next_ascii_char ();
5993 28142 : if (ch == 'e')
5994 : {
5995 28136 : if (match_string_p ("nt"))
5996 : {
5997 : /* Matched "intent". */
5998 28135 : d = match_intent_spec ();
5999 28135 : if (d == INTENT_UNKNOWN)
6000 : {
6001 2 : m = MATCH_ERROR;
6002 2 : goto cleanup;
6003 : }
6004 : }
6005 : }
6006 6 : else if (ch == 'r')
6007 : {
6008 6 : if (match_string_p ("insic"))
6009 : {
6010 : /* Matched "intrinsic". */
6011 : d = DECL_INTRINSIC;
6012 : }
6013 : }
6014 : }
6015 : break;
6016 :
6017 293 : case 'k':
6018 293 : if (match_string_p ("kind"))
6019 : d = DECL_KIND;
6020 : break;
6021 :
6022 313 : case 'l':
6023 313 : if (match_string_p ("len"))
6024 : d = DECL_LEN;
6025 : break;
6026 :
6027 5073 : case 'o':
6028 5073 : if (match_string_p ("optional"))
6029 : d = DECL_OPTIONAL;
6030 : break;
6031 :
6032 27193 : case 'p':
6033 27193 : gfc_next_ascii_char ();
6034 27193 : switch (gfc_next_ascii_char ())
6035 : {
6036 14307 : case 'a':
6037 14307 : if (match_string_p ("rameter"))
6038 : {
6039 : /* Matched "parameter". */
6040 : d = DECL_PARAMETER;
6041 : }
6042 : break;
6043 :
6044 12365 : case 'o':
6045 12365 : if (match_string_p ("inter"))
6046 : {
6047 : /* Matched "pointer". */
6048 : d = DECL_POINTER;
6049 : }
6050 : break;
6051 :
6052 268 : case 'r':
6053 268 : ch = gfc_next_ascii_char ();
6054 268 : if (ch == 'i')
6055 : {
6056 217 : if (match_string_p ("vate"))
6057 : {
6058 : /* Matched "private". */
6059 : d = DECL_PRIVATE;
6060 : }
6061 : }
6062 51 : else if (ch == 'o')
6063 : {
6064 51 : if (match_string_p ("tected"))
6065 : {
6066 : /* Matched "protected". */
6067 : d = DECL_PROTECTED;
6068 : }
6069 : }
6070 : break;
6071 :
6072 253 : case 'u':
6073 253 : if (match_string_p ("blic"))
6074 : {
6075 : /* Matched "public". */
6076 : d = DECL_PUBLIC;
6077 : }
6078 : break;
6079 : }
6080 : break;
6081 :
6082 1216 : case 's':
6083 1216 : gfc_next_ascii_char ();
6084 1216 : switch (gfc_next_ascii_char ())
6085 : {
6086 1203 : case 'a':
6087 1203 : if (match_string_p ("ve"))
6088 : {
6089 : /* Matched "save". */
6090 : d = DECL_SAVE;
6091 : }
6092 : break;
6093 :
6094 13 : case 't':
6095 13 : if (match_string_p ("atic"))
6096 : {
6097 : /* Matched "static". */
6098 : d = DECL_STATIC;
6099 : }
6100 : break;
6101 : }
6102 : break;
6103 :
6104 5532 : case 't':
6105 5532 : if (match_string_p ("target"))
6106 : d = DECL_TARGET;
6107 : break;
6108 :
6109 11140 : case 'v':
6110 11140 : gfc_next_ascii_char ();
6111 11140 : ch = gfc_next_ascii_char ();
6112 11140 : if (ch == 'a')
6113 : {
6114 10631 : if (match_string_p ("lue"))
6115 : {
6116 : /* Matched "value". */
6117 : d = DECL_VALUE;
6118 : }
6119 : }
6120 509 : else if (ch == 'o')
6121 : {
6122 509 : if (match_string_p ("latile"))
6123 : {
6124 : /* Matched "volatile". */
6125 : d = DECL_VOLATILE;
6126 : }
6127 : }
6128 : break;
6129 : }
6130 : }
6131 :
6132 : /* No double colon and no recognizable decl_type, so assume that
6133 : we've been looking at something else the whole time. */
6134 : if (d == DECL_NONE)
6135 : {
6136 33844 : m = MATCH_NO;
6137 33844 : goto cleanup;
6138 : }
6139 :
6140 : /* Check to make sure any parens are paired up correctly. */
6141 119877 : if (gfc_match_parens () == MATCH_ERROR)
6142 : {
6143 1 : m = MATCH_ERROR;
6144 1 : goto cleanup;
6145 : }
6146 :
6147 119876 : seen[d]++;
6148 119876 : seen_at[d] = gfc_current_locus;
6149 :
6150 119876 : if (d == DECL_DIMENSION || d == DECL_CODIMENSION)
6151 : {
6152 19820 : gfc_array_spec *as = NULL;
6153 :
6154 19820 : m = gfc_match_array_spec (&as, d == DECL_DIMENSION,
6155 : d == DECL_CODIMENSION);
6156 :
6157 19820 : if (current_as == NULL)
6158 19795 : current_as = as;
6159 25 : else if (m == MATCH_YES)
6160 : {
6161 25 : if (!merge_array_spec (as, current_as, false))
6162 2 : m = MATCH_ERROR;
6163 25 : free (as);
6164 : }
6165 :
6166 19820 : if (m == MATCH_NO)
6167 : {
6168 0 : if (d == DECL_CODIMENSION)
6169 0 : gfc_error ("Missing codimension specification at %C");
6170 : else
6171 0 : gfc_error ("Missing dimension specification at %C");
6172 : m = MATCH_ERROR;
6173 : }
6174 :
6175 19820 : if (m == MATCH_ERROR)
6176 7 : goto cleanup;
6177 : }
6178 : }
6179 :
6180 : /* Since we've seen a double colon, we have to be looking at an
6181 : attr-spec. This means that we can now issue errors. */
6182 4993818 : for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
6183 4808863 : if (seen[d] > 1)
6184 : {
6185 2 : switch (d)
6186 : {
6187 : case DECL_ALLOCATABLE:
6188 : attr = "ALLOCATABLE";
6189 : break;
6190 0 : case DECL_ASYNCHRONOUS:
6191 0 : attr = "ASYNCHRONOUS";
6192 0 : break;
6193 0 : case DECL_CODIMENSION:
6194 0 : attr = "CODIMENSION";
6195 0 : break;
6196 0 : case DECL_CONTIGUOUS:
6197 0 : attr = "CONTIGUOUS";
6198 0 : break;
6199 0 : case DECL_DIMENSION:
6200 0 : attr = "DIMENSION";
6201 0 : break;
6202 0 : case DECL_EXTERNAL:
6203 0 : attr = "EXTERNAL";
6204 0 : break;
6205 0 : case DECL_IN:
6206 0 : attr = "INTENT (IN)";
6207 0 : break;
6208 0 : case DECL_OUT:
6209 0 : attr = "INTENT (OUT)";
6210 0 : break;
6211 0 : case DECL_INOUT:
6212 0 : attr = "INTENT (IN OUT)";
6213 0 : break;
6214 0 : case DECL_INTRINSIC:
6215 0 : attr = "INTRINSIC";
6216 0 : break;
6217 0 : case DECL_OPTIONAL:
6218 0 : attr = "OPTIONAL";
6219 0 : break;
6220 0 : case DECL_KIND:
6221 0 : attr = "KIND";
6222 0 : break;
6223 0 : case DECL_LEN:
6224 0 : attr = "LEN";
6225 0 : break;
6226 0 : case DECL_PARAMETER:
6227 0 : attr = "PARAMETER";
6228 0 : break;
6229 0 : case DECL_POINTER:
6230 0 : attr = "POINTER";
6231 0 : break;
6232 0 : case DECL_PROTECTED:
6233 0 : attr = "PROTECTED";
6234 0 : break;
6235 0 : case DECL_PRIVATE:
6236 0 : attr = "PRIVATE";
6237 0 : break;
6238 0 : case DECL_PUBLIC:
6239 0 : attr = "PUBLIC";
6240 0 : break;
6241 0 : case DECL_SAVE:
6242 0 : attr = "SAVE";
6243 0 : break;
6244 0 : case DECL_STATIC:
6245 0 : attr = "STATIC";
6246 0 : break;
6247 1 : case DECL_AUTOMATIC:
6248 1 : attr = "AUTOMATIC";
6249 1 : break;
6250 0 : case DECL_TARGET:
6251 0 : attr = "TARGET";
6252 0 : break;
6253 0 : case DECL_IS_BIND_C:
6254 0 : attr = "IS_BIND_C";
6255 0 : break;
6256 0 : case DECL_VALUE:
6257 0 : attr = "VALUE";
6258 0 : break;
6259 1 : case DECL_VOLATILE:
6260 1 : attr = "VOLATILE";
6261 1 : break;
6262 0 : default:
6263 0 : attr = NULL; /* This shouldn't happen. */
6264 : }
6265 :
6266 2 : gfc_error ("Duplicate %s attribute at %L", attr, &seen_at[d]);
6267 2 : m = MATCH_ERROR;
6268 2 : goto cleanup;
6269 : }
6270 :
6271 : /* Now that we've dealt with duplicate attributes, add the attributes
6272 : to the current attribute. */
6273 4992998 : for (d = GFC_DECL_BEGIN; d != GFC_DECL_END; d++)
6274 : {
6275 4808116 : if (seen[d] == 0)
6276 4688256 : continue;
6277 : else
6278 119860 : attr_seen = 1;
6279 :
6280 119860 : if ((d == DECL_STATIC || d == DECL_AUTOMATIC)
6281 52 : && !flag_dec_static)
6282 : {
6283 3 : gfc_error ("%s at %L is a DEC extension, enable with "
6284 : "%<-fdec-static%>",
6285 : d == DECL_STATIC ? "STATIC" : "AUTOMATIC", &seen_at[d]);
6286 2 : m = MATCH_ERROR;
6287 2 : goto cleanup;
6288 : }
6289 : /* Allow SAVE with STATIC, but don't complain. */
6290 50 : if (d == DECL_STATIC && seen[DECL_SAVE])
6291 0 : continue;
6292 :
6293 119858 : if (gfc_comp_struct (gfc_current_state ())
6294 6965 : && d != DECL_DIMENSION && d != DECL_CODIMENSION
6295 6001 : && d != DECL_POINTER && d != DECL_PRIVATE
6296 4311 : && d != DECL_PUBLIC && d != DECL_CONTIGUOUS && d != DECL_NONE)
6297 : {
6298 4254 : bool is_derived = gfc_current_state () == COMP_DERIVED;
6299 4254 : if (d == DECL_ALLOCATABLE)
6300 : {
6301 3635 : if (!gfc_notify_std (GFC_STD_F2003, is_derived
6302 : ? G_("ALLOCATABLE attribute at %C in a "
6303 : "TYPE definition")
6304 : : G_("ALLOCATABLE attribute at %C in a "
6305 : "STRUCTURE definition")))
6306 : {
6307 2 : m = MATCH_ERROR;
6308 2 : goto cleanup;
6309 : }
6310 : }
6311 619 : else if (d == DECL_KIND)
6312 : {
6313 291 : if (!gfc_notify_std (GFC_STD_F2003, is_derived
6314 : ? G_("KIND attribute at %C in a "
6315 : "TYPE definition")
6316 : : G_("KIND attribute at %C in a "
6317 : "STRUCTURE definition")))
6318 : {
6319 1 : m = MATCH_ERROR;
6320 1 : goto cleanup;
6321 : }
6322 290 : if (current_ts.type != BT_INTEGER)
6323 : {
6324 2 : gfc_error ("Component with KIND attribute at %C must be "
6325 : "INTEGER");
6326 2 : m = MATCH_ERROR;
6327 2 : goto cleanup;
6328 : }
6329 : }
6330 328 : else if (d == DECL_LEN)
6331 : {
6332 312 : if (!gfc_notify_std (GFC_STD_F2003, is_derived
6333 : ? G_("LEN attribute at %C in a "
6334 : "TYPE definition")
6335 : : G_("LEN attribute at %C in a "
6336 : "STRUCTURE definition")))
6337 : {
6338 0 : m = MATCH_ERROR;
6339 0 : goto cleanup;
6340 : }
6341 312 : if (current_ts.type != BT_INTEGER)
6342 : {
6343 1 : gfc_error ("Component with LEN attribute at %C must be "
6344 : "INTEGER");
6345 1 : m = MATCH_ERROR;
6346 1 : goto cleanup;
6347 : }
6348 : }
6349 : else
6350 : {
6351 32 : gfc_error (is_derived ? G_("Attribute at %L is not allowed in a "
6352 : "TYPE definition")
6353 : : G_("Attribute at %L is not allowed in a "
6354 : "STRUCTURE definition"), &seen_at[d]);
6355 16 : m = MATCH_ERROR;
6356 16 : goto cleanup;
6357 : }
6358 : }
6359 :
6360 119836 : if ((d == DECL_PRIVATE || d == DECL_PUBLIC)
6361 470 : && gfc_current_state () != COMP_MODULE)
6362 : {
6363 147 : if (d == DECL_PRIVATE)
6364 : attr = "PRIVATE";
6365 : else
6366 43 : attr = "PUBLIC";
6367 147 : if (gfc_current_state () == COMP_DERIVED
6368 141 : && gfc_state_stack->previous
6369 141 : && gfc_state_stack->previous->state == COMP_MODULE)
6370 : {
6371 138 : if (!gfc_notify_std (GFC_STD_F2003, "Attribute %s "
6372 : "at %L in a TYPE definition", attr,
6373 : &seen_at[d]))
6374 : {
6375 2 : m = MATCH_ERROR;
6376 2 : goto cleanup;
6377 : }
6378 : }
6379 : else
6380 : {
6381 9 : gfc_error ("%s attribute at %L is not allowed outside of the "
6382 : "specification part of a module", attr, &seen_at[d]);
6383 9 : m = MATCH_ERROR;
6384 9 : goto cleanup;
6385 : }
6386 : }
6387 :
6388 119825 : if (gfc_current_state () != COMP_DERIVED
6389 112891 : && (d == DECL_KIND || d == DECL_LEN))
6390 : {
6391 3 : gfc_error ("Attribute at %L is not allowed outside a TYPE "
6392 : "definition", &seen_at[d]);
6393 3 : m = MATCH_ERROR;
6394 3 : goto cleanup;
6395 : }
6396 :
6397 119822 : switch (d)
6398 : {
6399 18653 : case DECL_ALLOCATABLE:
6400 18653 : t = gfc_add_allocatable (¤t_attr, &seen_at[d]);
6401 18653 : break;
6402 :
6403 24 : case DECL_ASYNCHRONOUS:
6404 24 : if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS attribute at %C"))
6405 : t = false;
6406 : else
6407 24 : t = gfc_add_asynchronous (¤t_attr, NULL, &seen_at[d]);
6408 : break;
6409 :
6410 66 : case DECL_CODIMENSION:
6411 66 : t = gfc_add_codimension (¤t_attr, NULL, &seen_at[d]);
6412 66 : break;
6413 :
6414 2095 : case DECL_CONTIGUOUS:
6415 2095 : if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS attribute at %C"))
6416 : t = false;
6417 : else
6418 2094 : t = gfc_add_contiguous (¤t_attr, NULL, &seen_at[d]);
6419 : break;
6420 :
6421 19745 : case DECL_DIMENSION:
6422 19745 : t = gfc_add_dimension (¤t_attr, NULL, &seen_at[d]);
6423 19745 : break;
6424 :
6425 176 : case DECL_EXTERNAL:
6426 176 : t = gfc_add_external (¤t_attr, &seen_at[d]);
6427 176 : break;
6428 :
6429 21228 : case DECL_IN:
6430 21228 : t = gfc_add_intent (¤t_attr, INTENT_IN, &seen_at[d]);
6431 21228 : break;
6432 :
6433 3736 : case DECL_OUT:
6434 3736 : t = gfc_add_intent (¤t_attr, INTENT_OUT, &seen_at[d]);
6435 3736 : break;
6436 :
6437 3165 : case DECL_INOUT:
6438 3165 : t = gfc_add_intent (¤t_attr, INTENT_INOUT, &seen_at[d]);
6439 3165 : break;
6440 :
6441 5 : case DECL_INTRINSIC:
6442 5 : t = gfc_add_intrinsic (¤t_attr, &seen_at[d]);
6443 5 : break;
6444 :
6445 5072 : case DECL_OPTIONAL:
6446 5072 : t = gfc_add_optional (¤t_attr, &seen_at[d]);
6447 5072 : break;
6448 :
6449 288 : case DECL_KIND:
6450 288 : t = gfc_add_kind (¤t_attr, &seen_at[d]);
6451 288 : break;
6452 :
6453 311 : case DECL_LEN:
6454 311 : t = gfc_add_len (¤t_attr, &seen_at[d]);
6455 311 : break;
6456 :
6457 14306 : case DECL_PARAMETER:
6458 14306 : t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, &seen_at[d]);
6459 14306 : break;
6460 :
6461 12364 : case DECL_POINTER:
6462 12364 : t = gfc_add_pointer (¤t_attr, &seen_at[d]);
6463 12364 : break;
6464 :
6465 50 : case DECL_PROTECTED:
6466 50 : if (gfc_current_state () != COMP_MODULE
6467 48 : || (gfc_current_ns->proc_name
6468 48 : && gfc_current_ns->proc_name->attr.flavor != FL_MODULE))
6469 : {
6470 2 : gfc_error ("PROTECTED at %C only allowed in specification "
6471 : "part of a module");
6472 2 : t = false;
6473 2 : break;
6474 : }
6475 :
6476 48 : if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED attribute at %C"))
6477 : t = false;
6478 : else
6479 44 : t = gfc_add_protected (¤t_attr, NULL, &seen_at[d]);
6480 : break;
6481 :
6482 214 : case DECL_PRIVATE:
6483 214 : t = gfc_add_access (¤t_attr, ACCESS_PRIVATE, NULL,
6484 : &seen_at[d]);
6485 214 : break;
6486 :
6487 245 : case DECL_PUBLIC:
6488 245 : t = gfc_add_access (¤t_attr, ACCESS_PUBLIC, NULL,
6489 : &seen_at[d]);
6490 245 : break;
6491 :
6492 1213 : case DECL_STATIC:
6493 1213 : case DECL_SAVE:
6494 1213 : t = gfc_add_save (¤t_attr, SAVE_EXPLICIT, NULL, &seen_at[d]);
6495 1213 : break;
6496 :
6497 37 : case DECL_AUTOMATIC:
6498 37 : t = gfc_add_automatic (¤t_attr, NULL, &seen_at[d]);
6499 37 : break;
6500 :
6501 5530 : case DECL_TARGET:
6502 5530 : t = gfc_add_target (¤t_attr, &seen_at[d]);
6503 5530 : break;
6504 :
6505 163 : case DECL_IS_BIND_C:
6506 163 : t = gfc_add_is_bind_c(¤t_attr, NULL, &seen_at[d], 0);
6507 163 : break;
6508 :
6509 10630 : case DECL_VALUE:
6510 10630 : if (!gfc_notify_std (GFC_STD_F2003, "VALUE attribute at %C"))
6511 : t = false;
6512 : else
6513 10630 : t = gfc_add_value (¤t_attr, NULL, &seen_at[d]);
6514 : break;
6515 :
6516 506 : case DECL_VOLATILE:
6517 506 : if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE attribute at %C"))
6518 : t = false;
6519 : else
6520 505 : t = gfc_add_volatile (¤t_attr, NULL, &seen_at[d]);
6521 : break;
6522 :
6523 0 : default:
6524 0 : gfc_internal_error ("match_attr_spec(): Bad attribute");
6525 : }
6526 :
6527 119816 : if (!t)
6528 : {
6529 35 : m = MATCH_ERROR;
6530 35 : goto cleanup;
6531 : }
6532 : }
6533 :
6534 : /* Since Fortran 2008 module variables implicitly have the SAVE attribute. */
6535 184882 : if ((gfc_current_state () == COMP_MODULE
6536 184882 : || gfc_current_state () == COMP_SUBMODULE)
6537 5850 : && !current_attr.save
6538 5668 : && (gfc_option.allow_std & GFC_STD_F2008) != 0)
6539 5576 : current_attr.save = SAVE_IMPLICIT;
6540 :
6541 184882 : colon_seen = 1;
6542 184882 : return MATCH_YES;
6543 :
6544 33929 : cleanup:
6545 33929 : gfc_current_locus = start;
6546 33929 : gfc_free_array_spec (current_as);
6547 33929 : current_as = NULL;
6548 33929 : attr_seen = 0;
6549 33929 : return m;
6550 : }
6551 :
6552 :
6553 : /* Set the binding label, dest_label, either with the binding label
6554 : stored in the given gfc_typespec, ts, or if none was provided, it
6555 : will be the symbol name in all lower case, as required by the draft
6556 : (J3/04-007, section 15.4.1). If a binding label was given and
6557 : there is more than one argument (num_idents), it is an error. */
6558 :
6559 : static bool
6560 347 : set_binding_label (const char **dest_label, const char *sym_name,
6561 : int num_idents)
6562 : {
6563 347 : if (num_idents > 1 && has_name_equals)
6564 : {
6565 4 : gfc_error ("Multiple identifiers provided with "
6566 : "single NAME= specifier at %C");
6567 4 : return false;
6568 : }
6569 :
6570 343 : if (curr_binding_label)
6571 : /* Binding label given; store in temp holder till have sym. */
6572 108 : *dest_label = curr_binding_label;
6573 : else
6574 : {
6575 : /* No binding label given, and the NAME= specifier did not exist,
6576 : which means there was no NAME="". */
6577 235 : if (sym_name != NULL && has_name_equals == 0)
6578 205 : *dest_label = IDENTIFIER_POINTER (get_identifier (sym_name));
6579 : }
6580 :
6581 : return true;
6582 : }
6583 :
6584 :
6585 : /* Set the status of the given common block as being BIND(C) or not,
6586 : depending on the given parameter, is_bind_c. */
6587 :
6588 : static void
6589 76 : set_com_block_bind_c (gfc_common_head *com_block, int is_bind_c)
6590 : {
6591 76 : com_block->is_bind_c = is_bind_c;
6592 76 : return;
6593 : }
6594 :
6595 :
6596 : /* Verify that the given gfc_typespec is for a C interoperable type. */
6597 :
6598 : bool
6599 21419 : gfc_verify_c_interop (gfc_typespec *ts)
6600 : {
6601 21419 : if (ts->type == BT_DERIVED && ts->u.derived != NULL)
6602 4320 : return ts->u.derived->ts.is_c_interop || ts->u.derived->attr.is_bind_c;
6603 17099 : else if (ts->type == BT_CLASS)
6604 : return false;
6605 17091 : else if (ts->is_c_interop != 1 && ts->type != BT_ASSUMED)
6606 3983 : return false;
6607 :
6608 : return true;
6609 : }
6610 :
6611 :
6612 : /* Verify that the variables of a given common block, which has been
6613 : defined with the attribute specifier bind(c), to be of a C
6614 : interoperable type. Errors will be reported here, if
6615 : encountered. */
6616 :
6617 : bool
6618 1 : verify_com_block_vars_c_interop (gfc_common_head *com_block)
6619 : {
6620 1 : gfc_symbol *curr_sym = NULL;
6621 1 : bool retval = true;
6622 :
6623 1 : curr_sym = com_block->head;
6624 :
6625 : /* Make sure we have at least one symbol. */
6626 1 : if (curr_sym == NULL)
6627 : return retval;
6628 :
6629 : /* Here we know we have a symbol, so we'll execute this loop
6630 : at least once. */
6631 1 : do
6632 : {
6633 : /* The second to last param, 1, says this is in a common block. */
6634 1 : retval = verify_bind_c_sym (curr_sym, &(curr_sym->ts), 1, com_block);
6635 1 : curr_sym = curr_sym->common_next;
6636 1 : } while (curr_sym != NULL);
6637 :
6638 : return retval;
6639 : }
6640 :
6641 :
6642 : /* Verify that a given BIND(C) symbol is C interoperable. If it is not,
6643 : an appropriate error message is reported. */
6644 :
6645 : bool
6646 7399 : verify_bind_c_sym (gfc_symbol *tmp_sym, gfc_typespec *ts,
6647 : int is_in_common, gfc_common_head *com_block)
6648 : {
6649 7399 : bool bind_c_function = false;
6650 7399 : bool retval = true;
6651 :
6652 7399 : if (tmp_sym->attr.function && tmp_sym->attr.is_bind_c)
6653 7399 : bind_c_function = true;
6654 :
6655 7399 : if (tmp_sym->attr.function && tmp_sym->result != NULL)
6656 : {
6657 3150 : tmp_sym = tmp_sym->result;
6658 : /* Make sure it wasn't an implicitly typed result. */
6659 3150 : if (tmp_sym->attr.implicit_type && warn_c_binding_type)
6660 : {
6661 1 : gfc_warning (OPT_Wc_binding_type,
6662 : "Implicitly declared BIND(C) function %qs at "
6663 : "%L may not be C interoperable", tmp_sym->name,
6664 : &tmp_sym->declared_at);
6665 1 : tmp_sym->ts.f90_type = tmp_sym->ts.type;
6666 : /* Mark it as C interoperable to prevent duplicate warnings. */
6667 1 : tmp_sym->ts.is_c_interop = 1;
6668 1 : tmp_sym->attr.is_c_interop = 1;
6669 : }
6670 : }
6671 :
6672 : /* Here, we know we have the bind(c) attribute, so if we have
6673 : enough type info, then verify that it's a C interop kind.
6674 : The info could be in the symbol already, or possibly still in
6675 : the given ts (current_ts), so look in both. */
6676 7399 : if (tmp_sym->ts.type != BT_UNKNOWN || ts->type != BT_UNKNOWN)
6677 : {
6678 3309 : if (!gfc_verify_c_interop (&(tmp_sym->ts)))
6679 : {
6680 : /* See if we're dealing with a sym in a common block or not. */
6681 237 : if (is_in_common == 1 && warn_c_binding_type)
6682 : {
6683 0 : gfc_warning (OPT_Wc_binding_type,
6684 : "Variable %qs in common block %qs at %L "
6685 : "may not be a C interoperable "
6686 : "kind though common block %qs is BIND(C)",
6687 : tmp_sym->name, com_block->name,
6688 0 : &(tmp_sym->declared_at), com_block->name);
6689 : }
6690 : else
6691 : {
6692 237 : if (tmp_sym->ts.type == BT_DERIVED || ts->type == BT_DERIVED
6693 235 : || tmp_sym->ts.type == BT_CLASS || ts->type == BT_CLASS)
6694 : {
6695 3 : gfc_error ("Type declaration %qs at %L is not C "
6696 : "interoperable but it is BIND(C)",
6697 : tmp_sym->name, &(tmp_sym->declared_at));
6698 3 : retval = false;
6699 : }
6700 234 : else if (warn_c_binding_type)
6701 3 : gfc_warning (OPT_Wc_binding_type, "Variable %qs at %L "
6702 : "may not be a C interoperable "
6703 : "kind but it is BIND(C)",
6704 : tmp_sym->name, &(tmp_sym->declared_at));
6705 : }
6706 : }
6707 :
6708 : /* Variables declared w/in a common block can't be bind(c)
6709 : since there's no way for C to see these variables, so there's
6710 : semantically no reason for the attribute. */
6711 3309 : if (is_in_common == 1 && tmp_sym->attr.is_bind_c == 1)
6712 : {
6713 1 : gfc_error ("Variable %qs in common block %qs at "
6714 : "%L cannot be declared with BIND(C) "
6715 : "since it is not a global",
6716 1 : tmp_sym->name, com_block->name,
6717 : &(tmp_sym->declared_at));
6718 1 : retval = false;
6719 : }
6720 :
6721 : /* Scalar variables that are bind(c) cannot have the pointer
6722 : or allocatable attributes. */
6723 3309 : if (tmp_sym->attr.is_bind_c == 1)
6724 : {
6725 2771 : if (tmp_sym->attr.pointer == 1)
6726 : {
6727 1 : gfc_error ("Variable %qs at %L cannot have both the "
6728 : "POINTER and BIND(C) attributes",
6729 : tmp_sym->name, &(tmp_sym->declared_at));
6730 1 : retval = false;
6731 : }
6732 :
6733 2771 : if (tmp_sym->attr.allocatable == 1)
6734 : {
6735 0 : gfc_error ("Variable %qs at %L cannot have both the "
6736 : "ALLOCATABLE and BIND(C) attributes",
6737 : tmp_sym->name, &(tmp_sym->declared_at));
6738 0 : retval = false;
6739 : }
6740 :
6741 : }
6742 :
6743 : /* If it is a BIND(C) function, make sure the return value is a
6744 : scalar value. The previous tests in this function made sure
6745 : the type is interoperable. */
6746 3309 : if (bind_c_function && tmp_sym->as != NULL)
6747 2 : gfc_error ("Return type of BIND(C) function %qs at %L cannot "
6748 : "be an array", tmp_sym->name, &(tmp_sym->declared_at));
6749 :
6750 : /* BIND(C) functions cannot return a character string. */
6751 3150 : if (bind_c_function && tmp_sym->ts.type == BT_CHARACTER)
6752 116 : if (!gfc_length_one_character_type_p (&tmp_sym->ts))
6753 4 : gfc_error ("Return type of BIND(C) function %qs of character "
6754 : "type at %L must have length 1", tmp_sym->name,
6755 : &(tmp_sym->declared_at));
6756 : }
6757 :
6758 : /* See if the symbol has been marked as private. If it has, warn if
6759 : there is a binding label with default binding name. */
6760 7399 : if (tmp_sym->attr.access == ACCESS_PRIVATE
6761 11 : && tmp_sym->binding_label
6762 8 : && strcmp (tmp_sym->name, tmp_sym->binding_label) == 0
6763 5 : && (tmp_sym->attr.flavor == FL_VARIABLE
6764 4 : || tmp_sym->attr.if_source == IFSRC_DECL))
6765 4 : gfc_warning (OPT_Wsurprising,
6766 : "Symbol %qs at %L is marked PRIVATE but is accessible "
6767 : "via its default binding name %qs", tmp_sym->name,
6768 : &(tmp_sym->declared_at), tmp_sym->binding_label);
6769 :
6770 7399 : return retval;
6771 : }
6772 :
6773 :
6774 : /* Set the appropriate fields for a symbol that's been declared as
6775 : BIND(C) (the is_bind_c flag and the binding label), and verify that
6776 : the type is C interoperable. Errors are reported by the functions
6777 : used to set/test these fields. */
6778 :
6779 : static bool
6780 47 : set_verify_bind_c_sym (gfc_symbol *tmp_sym, int num_idents)
6781 : {
6782 47 : bool retval = true;
6783 :
6784 : /* TODO: Do we need to make sure the vars aren't marked private? */
6785 :
6786 : /* Set the is_bind_c bit in symbol_attribute. */
6787 47 : gfc_add_is_bind_c (&(tmp_sym->attr), tmp_sym->name, &gfc_current_locus, 0);
6788 :
6789 47 : if (!set_binding_label (&tmp_sym->binding_label, tmp_sym->name, num_idents))
6790 : return false;
6791 :
6792 : return retval;
6793 : }
6794 :
6795 :
6796 : /* Set the fields marking the given common block as BIND(C), including
6797 : a binding label, and report any errors encountered. */
6798 :
6799 : static bool
6800 76 : set_verify_bind_c_com_block (gfc_common_head *com_block, int num_idents)
6801 : {
6802 76 : bool retval = true;
6803 :
6804 : /* destLabel, common name, typespec (which may have binding label). */
6805 76 : if (!set_binding_label (&com_block->binding_label, com_block->name,
6806 : num_idents))
6807 : return false;
6808 :
6809 : /* Set the given common block (com_block) to being bind(c) (1). */
6810 76 : set_com_block_bind_c (com_block, 1);
6811 :
6812 76 : return retval;
6813 : }
6814 :
6815 :
6816 : /* Retrieve the list of one or more identifiers that the given bind(c)
6817 : attribute applies to. */
6818 :
6819 : static bool
6820 102 : get_bind_c_idents (void)
6821 : {
6822 102 : char name[GFC_MAX_SYMBOL_LEN + 1];
6823 102 : int num_idents = 0;
6824 102 : gfc_symbol *tmp_sym = NULL;
6825 102 : match found_id;
6826 102 : gfc_common_head *com_block = NULL;
6827 :
6828 102 : if (gfc_match_name (name) == MATCH_YES)
6829 : {
6830 38 : found_id = MATCH_YES;
6831 38 : gfc_get_ha_symbol (name, &tmp_sym);
6832 : }
6833 64 : else if (gfc_match_common_name (name) == MATCH_YES)
6834 : {
6835 64 : found_id = MATCH_YES;
6836 64 : com_block = gfc_get_common (name, 0);
6837 : }
6838 : else
6839 : {
6840 0 : gfc_error ("Need either entity or common block name for "
6841 : "attribute specification statement at %C");
6842 0 : return false;
6843 : }
6844 :
6845 : /* Save the current identifier and look for more. */
6846 123 : do
6847 : {
6848 : /* Increment the number of identifiers found for this spec stmt. */
6849 123 : num_idents++;
6850 :
6851 : /* Make sure we have a sym or com block, and verify that it can
6852 : be bind(c). Set the appropriate field(s) and look for more
6853 : identifiers. */
6854 123 : if (tmp_sym != NULL || com_block != NULL)
6855 : {
6856 123 : if (tmp_sym != NULL)
6857 : {
6858 47 : if (!set_verify_bind_c_sym (tmp_sym, num_idents))
6859 : return false;
6860 : }
6861 : else
6862 : {
6863 76 : if (!set_verify_bind_c_com_block (com_block, num_idents))
6864 : return false;
6865 : }
6866 :
6867 : /* Look to see if we have another identifier. */
6868 122 : tmp_sym = NULL;
6869 122 : if (gfc_match_eos () == MATCH_YES)
6870 : found_id = MATCH_NO;
6871 21 : else if (gfc_match_char (',') != MATCH_YES)
6872 : found_id = MATCH_NO;
6873 21 : else if (gfc_match_name (name) == MATCH_YES)
6874 : {
6875 9 : found_id = MATCH_YES;
6876 9 : gfc_get_ha_symbol (name, &tmp_sym);
6877 : }
6878 12 : else if (gfc_match_common_name (name) == MATCH_YES)
6879 : {
6880 12 : found_id = MATCH_YES;
6881 12 : com_block = gfc_get_common (name, 0);
6882 : }
6883 : else
6884 : {
6885 0 : gfc_error ("Missing entity or common block name for "
6886 : "attribute specification statement at %C");
6887 0 : return false;
6888 : }
6889 : }
6890 : else
6891 : {
6892 0 : gfc_internal_error ("Missing symbol");
6893 : }
6894 122 : } while (found_id == MATCH_YES);
6895 :
6896 : /* if we get here we were successful */
6897 : return true;
6898 : }
6899 :
6900 :
6901 : /* Try and match a BIND(C) attribute specification statement. */
6902 :
6903 : match
6904 140 : gfc_match_bind_c_stmt (void)
6905 : {
6906 140 : match found_match = MATCH_NO;
6907 140 : gfc_typespec *ts;
6908 :
6909 140 : ts = ¤t_ts;
6910 :
6911 : /* This may not be necessary. */
6912 140 : gfc_clear_ts (ts);
6913 : /* Clear the temporary binding label holder. */
6914 140 : curr_binding_label = NULL;
6915 :
6916 : /* Look for the bind(c). */
6917 140 : found_match = gfc_match_bind_c (NULL, true);
6918 :
6919 140 : if (found_match == MATCH_YES)
6920 : {
6921 103 : if (!gfc_notify_std (GFC_STD_F2003, "BIND(C) statement at %C"))
6922 : return MATCH_ERROR;
6923 :
6924 : /* Look for the :: now, but it is not required. */
6925 102 : gfc_match (" :: ");
6926 :
6927 : /* Get the identifier(s) that needs to be updated. This may need to
6928 : change to hand the flag(s) for the attr specified so all identifiers
6929 : found can have all appropriate parts updated (assuming that the same
6930 : spec stmt can have multiple attrs, such as both bind(c) and
6931 : allocatable...). */
6932 102 : if (!get_bind_c_idents ())
6933 : /* Error message should have printed already. */
6934 1 : return MATCH_ERROR;
6935 : }
6936 :
6937 : return found_match;
6938 : }
6939 :
6940 :
6941 : /* Match a data declaration statement. */
6942 :
6943 : match
6944 1032770 : gfc_match_data_decl (void)
6945 : {
6946 1032770 : gfc_symbol *sym;
6947 1032770 : match m;
6948 1032770 : int elem;
6949 1032770 : gfc_component *comp_tail = NULL;
6950 :
6951 1032770 : type_param_spec_list = NULL;
6952 1032770 : decl_type_param_list = NULL;
6953 :
6954 1032770 : num_idents_on_line = 0;
6955 :
6956 : /* Record the last component before we start, so that we can roll back
6957 : any components added during this statement on error. PR106946.
6958 : Must be set before any 'goto cleanup' with m == MATCH_ERROR. */
6959 1032770 : if (gfc_comp_struct (gfc_current_state ()))
6960 : {
6961 32257 : gfc_symbol *block = gfc_current_block ();
6962 32257 : if (block)
6963 : {
6964 32257 : comp_tail = block->components;
6965 32257 : if (comp_tail)
6966 33553 : while (comp_tail->next)
6967 : comp_tail = comp_tail->next;
6968 : }
6969 : }
6970 :
6971 1032770 : m = gfc_match_decl_type_spec (¤t_ts, 0);
6972 1032770 : if (m != MATCH_YES)
6973 : return m;
6974 :
6975 217636 : if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
6976 35595 : && !gfc_comp_struct (gfc_current_state ()))
6977 : {
6978 32131 : sym = gfc_use_derived (current_ts.u.derived);
6979 :
6980 32131 : if (sym == NULL)
6981 : {
6982 22 : m = MATCH_ERROR;
6983 22 : goto cleanup;
6984 : }
6985 :
6986 32109 : current_ts.u.derived = sym;
6987 : }
6988 :
6989 217614 : m = match_attr_spec ();
6990 217614 : if (m == MATCH_ERROR)
6991 : {
6992 84 : m = MATCH_NO;
6993 84 : goto cleanup;
6994 : }
6995 :
6996 : /* F2018:C708. */
6997 217530 : if (current_ts.type == BT_CLASS && current_attr.flavor == FL_PARAMETER)
6998 : {
6999 6 : gfc_error ("CLASS entity at %C cannot have the PARAMETER attribute");
7000 6 : m = MATCH_ERROR;
7001 6 : goto cleanup;
7002 : }
7003 :
7004 217524 : if (current_ts.type == BT_CLASS
7005 11168 : && current_ts.u.derived->attr.unlimited_polymorphic)
7006 1993 : goto ok;
7007 :
7008 215531 : if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
7009 33573 : && current_ts.u.derived->components == NULL
7010 2847 : && !current_ts.u.derived->attr.zero_comp)
7011 : {
7012 :
7013 210 : if (current_attr.pointer && gfc_comp_struct (gfc_current_state ()))
7014 136 : goto ok;
7015 :
7016 74 : if (current_attr.allocatable && gfc_current_state () == COMP_DERIVED)
7017 47 : goto ok;
7018 :
7019 27 : gfc_find_symbol (current_ts.u.derived->name,
7020 27 : current_ts.u.derived->ns, 1, &sym);
7021 :
7022 : /* Any symbol that we find had better be a type definition
7023 : which has its components defined, or be a structure definition
7024 : actively being parsed. */
7025 27 : if (sym != NULL && gfc_fl_struct (sym->attr.flavor)
7026 26 : && (current_ts.u.derived->components != NULL
7027 26 : || current_ts.u.derived->attr.zero_comp
7028 26 : || current_ts.u.derived == gfc_new_block))
7029 26 : goto ok;
7030 :
7031 1 : gfc_error ("Derived type at %C has not been previously defined "
7032 : "and so cannot appear in a derived type definition");
7033 1 : m = MATCH_ERROR;
7034 1 : goto cleanup;
7035 : }
7036 :
7037 215321 : ok:
7038 : /* If we have an old-style character declaration, and no new-style
7039 : attribute specifications, then there a comma is optional between
7040 : the type specification and the variable list. */
7041 217523 : if (m == MATCH_NO && current_ts.type == BT_CHARACTER && old_char_selector)
7042 1407 : gfc_match_char (',');
7043 :
7044 : /* Give the types/attributes to symbols that follow. Give the element
7045 : a number so that repeat character length expressions can be copied. */
7046 217523 : elem = 1;
7047 282883 : for (;;)
7048 : {
7049 282883 : num_idents_on_line++;
7050 282883 : m = variable_decl (elem++);
7051 282881 : if (m == MATCH_ERROR)
7052 415 : goto cleanup;
7053 282466 : if (m == MATCH_NO)
7054 : break;
7055 :
7056 282455 : if (gfc_match_eos () == MATCH_YES)
7057 217071 : goto cleanup;
7058 65384 : if (gfc_match_char (',') != MATCH_YES)
7059 : break;
7060 : }
7061 :
7062 35 : if (!gfc_error_flag_test ())
7063 : {
7064 : /* An anonymous structure declaration is unambiguous; if we matched one
7065 : according to gfc_match_structure_decl, we need to return MATCH_YES
7066 : here to avoid confusing the remaining matchers, even if there was an
7067 : error during variable_decl. We must flush any such errors. Note this
7068 : causes the parser to gracefully continue parsing the remaining input
7069 : as a structure body, which likely follows. */
7070 11 : if (current_ts.type == BT_DERIVED && current_ts.u.derived
7071 1 : && gfc_fl_struct (current_ts.u.derived->attr.flavor))
7072 : {
7073 1 : gfc_error_now ("Syntax error in anonymous structure declaration"
7074 : " at %C");
7075 : /* Skip the bad variable_decl and line up for the start of the
7076 : structure body. */
7077 1 : gfc_error_recovery ();
7078 1 : m = MATCH_YES;
7079 1 : goto cleanup;
7080 : }
7081 :
7082 10 : gfc_error ("Syntax error in data declaration at %C");
7083 : }
7084 :
7085 34 : m = MATCH_ERROR;
7086 :
7087 34 : gfc_free_data_all (gfc_current_ns);
7088 :
7089 217634 : cleanup:
7090 : /* If we failed inside a derived type definition, remove any CLASS
7091 : components that were added during this failed statement. For CLASS
7092 : components, gfc_build_class_symbol creates an extra container symbol in
7093 : the namespace outside the normal undo machinery. When reject_statement
7094 : later calls gfc_undo_symbols, the declaration state is rolled back but
7095 : that helper symbol survives and leaves the component dangling. Ordinary
7096 : components do not create that extra helper symbol, so leave them in
7097 : place for the usual follow-up diagnostics. PR106946.
7098 :
7099 : CLASS containers are shared between components of the same class type
7100 : and attributes (gfc_build_class_symbol reuses existing containers).
7101 : We must not free a container that is still referenced by a previously
7102 : committed component. Unlink and free the components first, then clean
7103 : up only orphaned containers. PR124482. */
7104 217634 : if (m == MATCH_ERROR && gfc_comp_struct (gfc_current_state ()))
7105 : {
7106 86 : gfc_symbol *block = gfc_current_block ();
7107 86 : if (block)
7108 : {
7109 86 : gfc_component **prev;
7110 86 : if (comp_tail)
7111 43 : prev = &comp_tail->next;
7112 : else
7113 43 : prev = &block->components;
7114 :
7115 : /* Record the CLASS container from the removed components.
7116 : Normally all components in one declaration share a single
7117 : container, but per-variable array specs can produce
7118 : additional ones; any beyond the first are harmlessly
7119 : leaked until namespace destruction. */
7120 86 : gfc_symbol *fclass_container = NULL;
7121 :
7122 120 : while (*prev)
7123 : {
7124 34 : gfc_component *c = *prev;
7125 34 : if (c->ts.type == BT_CLASS && c->ts.u.derived
7126 6 : && c->ts.u.derived->attr.is_class)
7127 : {
7128 3 : *prev = c->next;
7129 3 : if (!fclass_container)
7130 3 : fclass_container = c->ts.u.derived;
7131 3 : c->ts.u.derived = NULL;
7132 3 : gfc_free_component (c);
7133 : }
7134 : else
7135 31 : prev = &c->next;
7136 : }
7137 :
7138 : /* Free the container only if no remaining component still
7139 : references it. CLASS containers are shared between
7140 : components of the same class type and attributes
7141 : (gfc_build_class_symbol reuses existing ones). */
7142 86 : if (fclass_container)
7143 : {
7144 3 : bool shared = false;
7145 3 : for (gfc_component *q = block->components; q; q = q->next)
7146 1 : if (q->ts.type == BT_CLASS
7147 1 : && q->ts.u.derived == fclass_container)
7148 : {
7149 : shared = true;
7150 : break;
7151 : }
7152 3 : if (!shared)
7153 : {
7154 2 : if (gfc_find_symtree (fclass_container->ns->sym_root,
7155 : fclass_container->name))
7156 2 : gfc_delete_symtree (&fclass_container->ns->sym_root,
7157 : fclass_container->name);
7158 2 : gfc_release_symbol (fclass_container);
7159 : }
7160 : }
7161 : }
7162 : }
7163 :
7164 217634 : if (saved_kind_expr)
7165 180 : gfc_free_expr (saved_kind_expr);
7166 217634 : if (type_param_spec_list)
7167 985 : gfc_free_actual_arglist (type_param_spec_list);
7168 217634 : if (decl_type_param_list)
7169 942 : gfc_free_actual_arglist (decl_type_param_list);
7170 217634 : saved_kind_expr = NULL;
7171 217634 : gfc_free_array_spec (current_as);
7172 217634 : current_as = NULL;
7173 217634 : return m;
7174 : }
7175 :
7176 : static bool
7177 24717 : in_module_or_interface(void)
7178 : {
7179 24717 : if (gfc_current_state () == COMP_MODULE
7180 24717 : || gfc_current_state () == COMP_SUBMODULE
7181 24717 : || gfc_current_state () == COMP_INTERFACE)
7182 : return true;
7183 :
7184 20710 : if (gfc_state_stack->state == COMP_CONTAINS
7185 19828 : || gfc_state_stack->state == COMP_FUNCTION
7186 19722 : || gfc_state_stack->state == COMP_SUBROUTINE)
7187 : {
7188 988 : gfc_state_data *p;
7189 1032 : for (p = gfc_state_stack->previous; p ; p = p->previous)
7190 : {
7191 1028 : if (p->state == COMP_MODULE || p->state == COMP_SUBMODULE
7192 118 : || p->state == COMP_INTERFACE)
7193 : return true;
7194 : }
7195 : }
7196 : return false;
7197 : }
7198 :
7199 : /* Match a prefix associated with a function or subroutine
7200 : declaration. If the typespec pointer is nonnull, then a typespec
7201 : can be matched. Note that if nothing matches, MATCH_YES is
7202 : returned (the null string was matched). */
7203 :
7204 : match
7205 244683 : gfc_match_prefix (gfc_typespec *ts)
7206 : {
7207 244683 : bool seen_type;
7208 244683 : bool seen_impure;
7209 244683 : bool found_prefix;
7210 :
7211 244683 : gfc_clear_attr (¤t_attr);
7212 244683 : seen_type = false;
7213 244683 : seen_impure = false;
7214 :
7215 244683 : gcc_assert (!gfc_matching_prefix);
7216 244683 : gfc_matching_prefix = true;
7217 :
7218 254438 : do
7219 : {
7220 274464 : found_prefix = false;
7221 :
7222 : /* MODULE is a prefix like PURE, ELEMENTAL, etc., having a
7223 : corresponding attribute seems natural and distinguishes these
7224 : procedures from procedure types of PROC_MODULE, which these are
7225 : as well. */
7226 274464 : if (gfc_match ("module% ") == MATCH_YES)
7227 : {
7228 24992 : if (!gfc_notify_std (GFC_STD_F2008, "MODULE prefix at %C"))
7229 275 : goto error;
7230 :
7231 24717 : if (!in_module_or_interface ())
7232 : {
7233 19726 : gfc_error ("MODULE prefix at %C found outside of a module, "
7234 : "submodule, or interface");
7235 19726 : goto error;
7236 : }
7237 :
7238 4991 : current_attr.module_procedure = 1;
7239 4991 : found_prefix = true;
7240 : }
7241 :
7242 254463 : if (!seen_type && ts != NULL)
7243 : {
7244 137081 : match m;
7245 137081 : m = gfc_match_decl_type_spec (ts, 0);
7246 137081 : if (m == MATCH_ERROR)
7247 15 : goto error;
7248 137066 : if (m == MATCH_YES && gfc_match_space () == MATCH_YES)
7249 : {
7250 : seen_type = true;
7251 : found_prefix = true;
7252 : }
7253 : }
7254 :
7255 254448 : if (gfc_match ("elemental% ") == MATCH_YES)
7256 : {
7257 5377 : if (!gfc_add_elemental (¤t_attr, NULL))
7258 2 : goto error;
7259 :
7260 : found_prefix = true;
7261 : }
7262 :
7263 254446 : if (gfc_match ("pure% ") == MATCH_YES)
7264 : {
7265 2454 : if (!gfc_add_pure (¤t_attr, NULL))
7266 2 : goto error;
7267 :
7268 : found_prefix = true;
7269 : }
7270 :
7271 254444 : if (gfc_match ("recursive% ") == MATCH_YES)
7272 : {
7273 469 : if (!gfc_add_recursive (¤t_attr, NULL))
7274 2 : goto error;
7275 :
7276 : found_prefix = true;
7277 : }
7278 :
7279 : /* IMPURE is a somewhat special case, as it needs not set an actual
7280 : attribute but rather only prevents ELEMENTAL routines from being
7281 : automatically PURE. */
7282 254442 : if (gfc_match ("impure% ") == MATCH_YES)
7283 : {
7284 729 : if (!gfc_notify_std (GFC_STD_F2008, "IMPURE procedure at %C"))
7285 4 : goto error;
7286 :
7287 : seen_impure = true;
7288 : found_prefix = true;
7289 : }
7290 : }
7291 : while (found_prefix);
7292 :
7293 : /* IMPURE and PURE must not both appear, of course. */
7294 224657 : if (seen_impure && current_attr.pure)
7295 : {
7296 4 : gfc_error ("PURE and IMPURE must not appear both at %C");
7297 4 : goto error;
7298 : }
7299 :
7300 : /* If IMPURE it not seen but the procedure is ELEMENTAL, mark it as PURE. */
7301 223932 : if (!seen_impure && current_attr.elemental && !current_attr.pure)
7302 : {
7303 4682 : if (!gfc_add_pure (¤t_attr, NULL))
7304 0 : goto error;
7305 : }
7306 :
7307 : /* At this point, the next item is not a prefix. */
7308 224653 : gcc_assert (gfc_matching_prefix);
7309 :
7310 224653 : gfc_matching_prefix = false;
7311 224653 : return MATCH_YES;
7312 :
7313 20030 : error:
7314 20030 : gcc_assert (gfc_matching_prefix);
7315 20030 : gfc_matching_prefix = false;
7316 20030 : return MATCH_ERROR;
7317 : }
7318 :
7319 :
7320 : /* Copy attributes matched by gfc_match_prefix() to attributes on a symbol. */
7321 :
7322 : static bool
7323 63744 : copy_prefix (symbol_attribute *dest, locus *where)
7324 : {
7325 63744 : if (dest->module_procedure)
7326 : {
7327 732 : if (current_attr.elemental)
7328 13 : dest->elemental = 1;
7329 :
7330 732 : if (current_attr.pure)
7331 61 : dest->pure = 1;
7332 :
7333 732 : if (current_attr.recursive)
7334 8 : dest->recursive = 1;
7335 :
7336 : /* Module procedures are unusual in that the 'dest' is copied from
7337 : the interface declaration. However, this is an opportunity to
7338 : check that the submodule declaration is compliant with the
7339 : interface. */
7340 732 : if (dest->elemental && !current_attr.elemental)
7341 : {
7342 1 : gfc_error ("ELEMENTAL prefix in MODULE PROCEDURE interface is "
7343 : "missing at %L", where);
7344 1 : return false;
7345 : }
7346 :
7347 731 : if (dest->pure && !current_attr.pure)
7348 : {
7349 1 : gfc_error ("PURE prefix in MODULE PROCEDURE interface is "
7350 : "missing at %L", where);
7351 1 : return false;
7352 : }
7353 :
7354 730 : if (dest->recursive && !current_attr.recursive)
7355 : {
7356 1 : gfc_error ("RECURSIVE prefix in MODULE PROCEDURE interface is "
7357 : "missing at %L", where);
7358 1 : return false;
7359 : }
7360 :
7361 : return true;
7362 : }
7363 :
7364 63012 : if (current_attr.elemental && !gfc_add_elemental (dest, where))
7365 : return false;
7366 :
7367 63010 : if (current_attr.pure && !gfc_add_pure (dest, where))
7368 : return false;
7369 :
7370 63010 : if (current_attr.recursive && !gfc_add_recursive (dest, where))
7371 : return false;
7372 :
7373 : return true;
7374 : }
7375 :
7376 :
7377 : /* Match a formal argument list or, if typeparam is true, a
7378 : type_param_name_list. */
7379 :
7380 : match
7381 491668 : gfc_match_formal_arglist (gfc_symbol *progname, int st_flag,
7382 : int null_flag, bool typeparam)
7383 : {
7384 491668 : gfc_formal_arglist *head, *tail, *p, *q;
7385 491668 : char name[GFC_MAX_SYMBOL_LEN + 1];
7386 491668 : gfc_symbol *sym;
7387 491668 : match m;
7388 491668 : gfc_formal_arglist *formal = NULL;
7389 :
7390 491668 : head = tail = NULL;
7391 :
7392 : /* Keep the interface formal argument list and null it so that the
7393 : matching for the new declaration can be done. The numbers and
7394 : names of the arguments are checked here. The interface formal
7395 : arguments are retained in formal_arglist and the characteristics
7396 : are compared in resolve.cc(resolve_fl_procedure). See the remark
7397 : in get_proc_name about the eventual need to copy the formal_arglist
7398 : and populate the formal namespace of the interface symbol. */
7399 491668 : if (progname->attr.module_procedure
7400 736 : && progname->attr.host_assoc)
7401 : {
7402 196 : formal = progname->formal;
7403 196 : progname->formal = NULL;
7404 : }
7405 :
7406 491668 : if (gfc_match_char ('(') != MATCH_YES)
7407 : {
7408 290599 : if (null_flag)
7409 6750 : goto ok;
7410 : return MATCH_NO;
7411 : }
7412 :
7413 201069 : if (gfc_match_char (')') == MATCH_YES)
7414 : {
7415 10509 : if (typeparam)
7416 : {
7417 1 : gfc_error_now ("A type parameter list is required at %C");
7418 1 : m = MATCH_ERROR;
7419 1 : goto cleanup;
7420 : }
7421 : else
7422 10508 : goto ok;
7423 : }
7424 :
7425 253030 : for (;;)
7426 : {
7427 253030 : gfc_gobble_whitespace ();
7428 253030 : if (gfc_match_char ('*') == MATCH_YES)
7429 : {
7430 10437 : sym = NULL;
7431 10437 : if (!typeparam && !gfc_notify_std (GFC_STD_F95_OBS,
7432 : "Alternate-return argument at %C"))
7433 : {
7434 1 : m = MATCH_ERROR;
7435 1 : goto cleanup;
7436 : }
7437 10436 : else if (typeparam)
7438 2 : gfc_error_now ("A parameter name is required at %C");
7439 : }
7440 : else
7441 : {
7442 242593 : locus loc = gfc_current_locus;
7443 242593 : m = gfc_match_name (name);
7444 242593 : if (m != MATCH_YES)
7445 : {
7446 16718 : if(typeparam)
7447 1 : gfc_error_now ("A parameter name is required at %C");
7448 16734 : goto cleanup;
7449 : }
7450 225875 : loc = gfc_get_location_range (NULL, 0, &loc, 1, &gfc_current_locus);
7451 :
7452 225875 : if (!typeparam && gfc_get_symbol (name, NULL, &sym, &loc))
7453 16 : goto cleanup;
7454 225859 : else if (typeparam
7455 225859 : && gfc_get_symbol (name, progname->f2k_derived, &sym, &loc))
7456 0 : goto cleanup;
7457 : }
7458 :
7459 236295 : p = gfc_get_formal_arglist ();
7460 :
7461 236295 : if (head == NULL)
7462 : head = tail = p;
7463 : else
7464 : {
7465 61767 : tail->next = p;
7466 61767 : tail = p;
7467 : }
7468 :
7469 236295 : tail->sym = sym;
7470 :
7471 : /* We don't add the VARIABLE flavor because the name could be a
7472 : dummy procedure. We don't apply these attributes to formal
7473 : arguments of statement functions. */
7474 225859 : if (sym != NULL && !st_flag
7475 337838 : && (!gfc_add_dummy(&sym->attr, sym->name, NULL)
7476 101543 : || !gfc_missing_attr (&sym->attr, NULL)))
7477 : {
7478 0 : m = MATCH_ERROR;
7479 0 : goto cleanup;
7480 : }
7481 :
7482 : /* The name of a program unit can be in a different namespace,
7483 : so check for it explicitly. After the statement is accepted,
7484 : the name is checked for especially in gfc_get_symbol(). */
7485 236295 : if (gfc_new_block != NULL && sym != NULL && !typeparam
7486 100279 : && strcmp (sym->name, gfc_new_block->name) == 0)
7487 : {
7488 0 : gfc_error ("Name %qs at %C is the name of the procedure",
7489 : sym->name);
7490 0 : m = MATCH_ERROR;
7491 0 : goto cleanup;
7492 : }
7493 :
7494 236295 : if (gfc_match_char (')') == MATCH_YES)
7495 125456 : goto ok;
7496 :
7497 110839 : m = gfc_match_char (',');
7498 110839 : if (m != MATCH_YES)
7499 : {
7500 48369 : if (typeparam)
7501 1 : gfc_error_now ("Expected parameter list in type declaration "
7502 : "at %C");
7503 : else
7504 48368 : gfc_error ("Unexpected junk in formal argument list at %C");
7505 48369 : goto cleanup;
7506 : }
7507 : }
7508 :
7509 142714 : ok:
7510 : /* Check for duplicate symbols in the formal argument list. */
7511 142714 : if (head != NULL)
7512 : {
7513 185582 : for (p = head; p->next; p = p->next)
7514 : {
7515 60174 : if (p->sym == NULL)
7516 338 : continue;
7517 :
7518 237249 : for (q = p->next; q; q = q->next)
7519 177461 : if (p->sym == q->sym)
7520 : {
7521 48 : if (typeparam)
7522 1 : gfc_error_now ("Duplicate name %qs in parameter "
7523 : "list at %C", p->sym->name);
7524 : else
7525 47 : gfc_error ("Duplicate symbol %qs in formal argument "
7526 : "list at %C", p->sym->name);
7527 :
7528 48 : m = MATCH_ERROR;
7529 48 : goto cleanup;
7530 : }
7531 : }
7532 : }
7533 :
7534 142666 : if (!gfc_add_explicit_interface (progname, IFSRC_DECL, head, NULL))
7535 : {
7536 0 : m = MATCH_ERROR;
7537 0 : goto cleanup;
7538 : }
7539 :
7540 : /* gfc_error_now used in following and return with MATCH_YES because
7541 : doing otherwise results in a cascade of extraneous errors and in
7542 : some cases an ICE in symbol.cc(gfc_release_symbol). */
7543 142666 : if (progname->attr.module_procedure && progname->attr.host_assoc)
7544 : {
7545 195 : bool arg_count_mismatch = false;
7546 :
7547 195 : if (!formal && head)
7548 : arg_count_mismatch = true;
7549 :
7550 : /* Abbreviated module procedure declaration is not meant to have any
7551 : formal arguments! */
7552 195 : if (!progname->abr_modproc_decl && formal && !head)
7553 195 : arg_count_mismatch = true;
7554 :
7555 377 : for (p = formal, q = head; p && q; p = p->next, q = q->next)
7556 : {
7557 182 : if ((p->next != NULL && q->next == NULL)
7558 181 : || (p->next == NULL && q->next != NULL))
7559 : arg_count_mismatch = true;
7560 180 : else if ((p->sym == NULL && q->sym == NULL)
7561 180 : || (p->sym && q->sym
7562 178 : && strcmp (p->sym->name, q->sym->name) == 0))
7563 176 : continue;
7564 : else
7565 : {
7566 4 : if (q->sym == NULL)
7567 1 : gfc_error_now ("MODULE PROCEDURE formal argument %qs "
7568 : "conflicts with alternate return at %C",
7569 : p->sym->name);
7570 3 : else if (p->sym == NULL)
7571 1 : gfc_error_now ("MODULE PROCEDURE formal argument is "
7572 : "alternate return and conflicts with "
7573 : "%qs in the separate declaration at %C",
7574 : q->sym->name);
7575 : else
7576 2 : gfc_error_now ("Mismatch in MODULE PROCEDURE formal "
7577 : "argument names (%s/%s) at %C",
7578 : p->sym->name, q->sym->name);
7579 : }
7580 : }
7581 :
7582 195 : if (arg_count_mismatch)
7583 4 : gfc_error_now ("Mismatch in number of MODULE PROCEDURE "
7584 : "formal arguments at %C");
7585 : }
7586 :
7587 : return MATCH_YES;
7588 :
7589 65153 : cleanup:
7590 65153 : gfc_free_formal_arglist (head);
7591 65153 : return m;
7592 : }
7593 :
7594 :
7595 : /* Match a RESULT specification following a function declaration or
7596 : ENTRY statement. Also matches the end-of-statement. */
7597 :
7598 : static match
7599 8620 : match_result (gfc_symbol *function, gfc_symbol **result)
7600 : {
7601 8620 : char name[GFC_MAX_SYMBOL_LEN + 1];
7602 8620 : gfc_symbol *r;
7603 8620 : match m;
7604 :
7605 8620 : if (gfc_match (" result (") != MATCH_YES)
7606 : return MATCH_NO;
7607 :
7608 6064 : m = gfc_match_name (name);
7609 6064 : if (m != MATCH_YES)
7610 : return m;
7611 :
7612 : /* Get the right paren, and that's it because there could be the
7613 : bind(c) attribute after the result clause. */
7614 6064 : if (gfc_match_char (')') != MATCH_YES)
7615 : {
7616 : /* TODO: should report the missing right paren here. */
7617 : return MATCH_ERROR;
7618 : }
7619 :
7620 6064 : if (strcmp (function->name, name) == 0)
7621 : {
7622 1 : gfc_error ("RESULT variable at %C must be different than function name");
7623 1 : return MATCH_ERROR;
7624 : }
7625 :
7626 6063 : if (gfc_get_symbol (name, NULL, &r))
7627 : return MATCH_ERROR;
7628 :
7629 6063 : if (!gfc_add_result (&r->attr, r->name, NULL))
7630 : return MATCH_ERROR;
7631 :
7632 6063 : *result = r;
7633 :
7634 6063 : return MATCH_YES;
7635 : }
7636 :
7637 :
7638 : /* Match a function suffix, which could be a combination of a result
7639 : clause and BIND(C), either one, or neither. The draft does not
7640 : require them to come in a specific order. */
7641 :
7642 : static match
7643 8624 : gfc_match_suffix (gfc_symbol *sym, gfc_symbol **result)
7644 : {
7645 8624 : match is_bind_c; /* Found bind(c). */
7646 8624 : match is_result; /* Found result clause. */
7647 8624 : match found_match; /* Status of whether we've found a good match. */
7648 8624 : char peek_char; /* Character we're going to peek at. */
7649 8624 : bool allow_binding_name;
7650 :
7651 : /* Initialize to having found nothing. */
7652 8624 : found_match = MATCH_NO;
7653 8624 : is_bind_c = MATCH_NO;
7654 8624 : is_result = MATCH_NO;
7655 :
7656 : /* Get the next char to narrow between result and bind(c). */
7657 8624 : gfc_gobble_whitespace ();
7658 8624 : peek_char = gfc_peek_ascii_char ();
7659 :
7660 : /* C binding names are not allowed for internal procedures. */
7661 8624 : if (gfc_current_state () == COMP_CONTAINS
7662 4809 : && sym->ns->proc_name->attr.flavor != FL_MODULE)
7663 : allow_binding_name = false;
7664 : else
7665 6926 : allow_binding_name = true;
7666 :
7667 8624 : switch (peek_char)
7668 : {
7669 5693 : case 'r':
7670 : /* Look for result clause. */
7671 5693 : is_result = match_result (sym, result);
7672 5693 : if (is_result == MATCH_YES)
7673 : {
7674 : /* Now see if there is a bind(c) after it. */
7675 5692 : is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
7676 : /* We've found the result clause and possibly bind(c). */
7677 5692 : found_match = MATCH_YES;
7678 : }
7679 : else
7680 : /* This should only be MATCH_ERROR. */
7681 : found_match = is_result;
7682 : break;
7683 2931 : case 'b':
7684 : /* Look for bind(c) first. */
7685 2931 : is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
7686 2931 : if (is_bind_c == MATCH_YES)
7687 : {
7688 : /* Now see if a result clause followed it. */
7689 2927 : is_result = match_result (sym, result);
7690 2927 : found_match = MATCH_YES;
7691 : }
7692 : else
7693 : {
7694 : /* Should only be a MATCH_ERROR if we get here after seeing 'b'. */
7695 : found_match = MATCH_ERROR;
7696 : }
7697 : break;
7698 0 : default:
7699 0 : gfc_error ("Unexpected junk after function declaration at %C");
7700 0 : found_match = MATCH_ERROR;
7701 0 : break;
7702 : }
7703 :
7704 8619 : if (is_bind_c == MATCH_YES)
7705 : {
7706 : /* Fortran 2008 draft allows BIND(C) for internal procedures. */
7707 3094 : if (gfc_current_state () == COMP_CONTAINS
7708 423 : && sym->ns->proc_name->attr.flavor != FL_MODULE
7709 3112 : && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute "
7710 : "at %L may not be specified for an internal "
7711 : "procedure", &gfc_current_locus))
7712 : return MATCH_ERROR;
7713 :
7714 3091 : if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &gfc_current_locus, 1))
7715 0 : return MATCH_ERROR;
7716 : }
7717 :
7718 : return found_match;
7719 : }
7720 :
7721 :
7722 : /* Procedure pointer return value without RESULT statement:
7723 : Add "hidden" result variable named "ppr@". */
7724 :
7725 : static bool
7726 75422 : add_hidden_procptr_result (gfc_symbol *sym)
7727 : {
7728 75422 : bool case1,case2;
7729 :
7730 75422 : if (gfc_notification_std (GFC_STD_F2003) == ERROR)
7731 : return false;
7732 :
7733 : /* First usage case: PROCEDURE and EXTERNAL statements. */
7734 1539 : case1 = gfc_current_state () == COMP_FUNCTION && gfc_current_block ()
7735 1539 : && strcmp (gfc_current_block ()->name, sym->name) == 0
7736 75821 : && sym->attr.external;
7737 : /* Second usage case: INTERFACE statements. */
7738 14874 : case2 = gfc_current_state () == COMP_INTERFACE && gfc_state_stack->previous
7739 14874 : && gfc_state_stack->previous->state == COMP_FUNCTION
7740 75469 : && strcmp (gfc_state_stack->previous->sym->name, sym->name) == 0;
7741 :
7742 75238 : if (case1 || case2)
7743 : {
7744 125 : gfc_symtree *stree;
7745 125 : if (case1)
7746 95 : gfc_get_sym_tree ("ppr@", gfc_current_ns, &stree, false);
7747 : else
7748 : {
7749 30 : gfc_symtree *st2;
7750 30 : gfc_get_sym_tree ("ppr@", gfc_current_ns->parent, &stree, false);
7751 30 : st2 = gfc_new_symtree (&gfc_current_ns->sym_root, "ppr@");
7752 30 : st2->n.sym = stree->n.sym;
7753 30 : stree->n.sym->refs++;
7754 : }
7755 125 : sym->result = stree->n.sym;
7756 :
7757 125 : sym->result->attr.proc_pointer = sym->attr.proc_pointer;
7758 125 : sym->result->attr.pointer = sym->attr.pointer;
7759 125 : sym->result->attr.external = sym->attr.external;
7760 125 : sym->result->attr.referenced = sym->attr.referenced;
7761 125 : sym->result->ts = sym->ts;
7762 125 : sym->attr.proc_pointer = 0;
7763 125 : sym->attr.pointer = 0;
7764 125 : sym->attr.external = 0;
7765 125 : if (sym->result->attr.external && sym->result->attr.pointer)
7766 : {
7767 4 : sym->result->attr.pointer = 0;
7768 4 : sym->result->attr.proc_pointer = 1;
7769 : }
7770 :
7771 125 : return gfc_add_result (&sym->result->attr, sym->result->name, NULL);
7772 : }
7773 : /* POINTER after PROCEDURE/EXTERNAL/INTERFACE statement. */
7774 75143 : else if (sym->attr.function && !sym->attr.external && sym->attr.pointer
7775 411 : && sym->result && sym->result != sym && sym->result->attr.external
7776 28 : && sym == gfc_current_ns->proc_name
7777 28 : && sym == sym->result->ns->proc_name
7778 28 : && strcmp ("ppr@", sym->result->name) == 0)
7779 : {
7780 28 : sym->result->attr.proc_pointer = 1;
7781 28 : sym->attr.pointer = 0;
7782 28 : return true;
7783 : }
7784 : else
7785 : return false;
7786 : }
7787 :
7788 :
7789 : /* Match the interface for a PROCEDURE declaration,
7790 : including brackets (R1212). */
7791 :
7792 : static match
7793 1630 : match_procedure_interface (gfc_symbol **proc_if)
7794 : {
7795 1630 : match m;
7796 1630 : gfc_symtree *st;
7797 1630 : locus old_loc, entry_loc;
7798 1630 : gfc_namespace *old_ns = gfc_current_ns;
7799 1630 : char name[GFC_MAX_SYMBOL_LEN + 1];
7800 :
7801 1630 : old_loc = entry_loc = gfc_current_locus;
7802 1630 : gfc_clear_ts (¤t_ts);
7803 :
7804 1630 : if (gfc_match (" (") != MATCH_YES)
7805 : {
7806 1 : gfc_current_locus = entry_loc;
7807 1 : return MATCH_NO;
7808 : }
7809 :
7810 : /* Get the type spec. for the procedure interface. */
7811 1629 : old_loc = gfc_current_locus;
7812 1629 : m = gfc_match_decl_type_spec (¤t_ts, 0);
7813 1629 : gfc_gobble_whitespace ();
7814 1629 : if (m == MATCH_YES || (m == MATCH_NO && gfc_peek_ascii_char () == ')'))
7815 395 : goto got_ts;
7816 :
7817 1234 : if (m == MATCH_ERROR)
7818 : return m;
7819 :
7820 : /* Procedure interface is itself a procedure. */
7821 1234 : gfc_current_locus = old_loc;
7822 1234 : m = gfc_match_name (name);
7823 :
7824 : /* First look to see if it is already accessible in the current
7825 : namespace because it is use associated or contained. */
7826 1234 : st = NULL;
7827 1234 : if (gfc_find_sym_tree (name, NULL, 0, &st))
7828 : return MATCH_ERROR;
7829 :
7830 : /* If it is still not found, then try the parent namespace, if it
7831 : exists and create the symbol there if it is still not found. */
7832 1234 : if (gfc_current_ns->parent)
7833 435 : gfc_current_ns = gfc_current_ns->parent;
7834 1234 : if (st == NULL && gfc_get_ha_sym_tree (name, &st))
7835 : return MATCH_ERROR;
7836 :
7837 1234 : gfc_current_ns = old_ns;
7838 1234 : *proc_if = st->n.sym;
7839 :
7840 1234 : if (*proc_if)
7841 : {
7842 1234 : (*proc_if)->refs++;
7843 : /* Resolve interface if possible. That way, attr.procedure is only set
7844 : if it is declared by a later procedure-declaration-stmt, which is
7845 : invalid per F08:C1216 (cf. resolve_procedure_interface). */
7846 1234 : while ((*proc_if)->ts.interface
7847 1241 : && *proc_if != (*proc_if)->ts.interface)
7848 7 : *proc_if = (*proc_if)->ts.interface;
7849 :
7850 1234 : if ((*proc_if)->attr.flavor == FL_UNKNOWN
7851 389 : && (*proc_if)->ts.type == BT_UNKNOWN
7852 1623 : && !gfc_add_flavor (&(*proc_if)->attr, FL_PROCEDURE,
7853 : (*proc_if)->name, NULL))
7854 : return MATCH_ERROR;
7855 : }
7856 :
7857 0 : got_ts:
7858 1629 : if (gfc_match (" )") != MATCH_YES)
7859 : {
7860 0 : gfc_current_locus = entry_loc;
7861 0 : return MATCH_NO;
7862 : }
7863 :
7864 : return MATCH_YES;
7865 : }
7866 :
7867 :
7868 : /* Match a PROCEDURE declaration (R1211). */
7869 :
7870 : static match
7871 1197 : match_procedure_decl (void)
7872 : {
7873 1197 : match m;
7874 1197 : gfc_symbol *sym, *proc_if = NULL;
7875 1197 : int num;
7876 1197 : gfc_expr *initializer = NULL;
7877 :
7878 : /* Parse interface (with brackets). */
7879 1197 : m = match_procedure_interface (&proc_if);
7880 1197 : if (m != MATCH_YES)
7881 : return m;
7882 :
7883 : /* Parse attributes (with colons). */
7884 1197 : m = match_attr_spec();
7885 1197 : if (m == MATCH_ERROR)
7886 : return MATCH_ERROR;
7887 :
7888 1196 : if (current_attr.allocatable)
7889 : {
7890 2 : current_attr.procedure = 1;
7891 2 : gfc_check_conflict (¤t_attr, NULL, &gfc_current_locus);
7892 2 : return MATCH_ERROR;
7893 : }
7894 :
7895 1194 : if (proc_if && proc_if->attr.is_bind_c && !current_attr.is_bind_c)
7896 : {
7897 53 : current_attr.is_bind_c = 1;
7898 53 : has_name_equals = 0;
7899 53 : curr_binding_label = NULL;
7900 : }
7901 :
7902 : /* Get procedure symbols. */
7903 1194 : for(num=1;;num++)
7904 : {
7905 1273 : m = gfc_match_symbol (&sym, 0);
7906 1273 : if (m == MATCH_NO)
7907 1 : goto syntax;
7908 1272 : else if (m == MATCH_ERROR)
7909 : return m;
7910 :
7911 : /* Add current_attr to the symbol attributes. */
7912 1272 : if (!gfc_copy_attr (&sym->attr, ¤t_attr, NULL))
7913 : return MATCH_ERROR;
7914 :
7915 1270 : if (sym->attr.is_bind_c)
7916 : {
7917 : /* Check for C1218. */
7918 90 : if (!proc_if || !proc_if->attr.is_bind_c)
7919 : {
7920 1 : gfc_error ("BIND(C) attribute at %C requires "
7921 : "an interface with BIND(C)");
7922 1 : return MATCH_ERROR;
7923 : }
7924 : /* Check for C1217. */
7925 89 : if (has_name_equals && sym->attr.pointer)
7926 : {
7927 1 : gfc_error ("BIND(C) procedure with NAME may not have "
7928 : "POINTER attribute at %C");
7929 1 : return MATCH_ERROR;
7930 : }
7931 88 : if (has_name_equals && sym->attr.dummy)
7932 : {
7933 1 : gfc_error ("Dummy procedure at %C may not have "
7934 : "BIND(C) attribute with NAME");
7935 1 : return MATCH_ERROR;
7936 : }
7937 : /* Set binding label for BIND(C). */
7938 87 : if (!set_binding_label (&sym->binding_label, sym->name, num))
7939 : return MATCH_ERROR;
7940 : }
7941 :
7942 1266 : if (!gfc_add_external (&sym->attr, NULL))
7943 : return MATCH_ERROR;
7944 :
7945 1262 : if (add_hidden_procptr_result (sym))
7946 68 : sym = sym->result;
7947 :
7948 1262 : if (!gfc_add_proc (&sym->attr, sym->name, NULL))
7949 : return MATCH_ERROR;
7950 :
7951 : /* Set interface. */
7952 1262 : if (proc_if != NULL)
7953 : {
7954 919 : if (sym->ts.type != BT_UNKNOWN)
7955 : {
7956 1 : gfc_error ("Procedure %qs at %L already has basic type of %s",
7957 : sym->name, &gfc_current_locus,
7958 : gfc_basic_typename (sym->ts.type));
7959 1 : return MATCH_ERROR;
7960 : }
7961 918 : sym->ts.interface = proc_if;
7962 918 : sym->attr.untyped = 1;
7963 918 : sym->attr.if_source = IFSRC_IFBODY;
7964 : }
7965 343 : else if (current_ts.type != BT_UNKNOWN)
7966 : {
7967 199 : if (!gfc_add_type (sym, ¤t_ts, &gfc_current_locus))
7968 : return MATCH_ERROR;
7969 198 : sym->ts.interface = gfc_new_symbol ("", gfc_current_ns);
7970 198 : sym->ts.interface->ts = current_ts;
7971 198 : sym->ts.interface->attr.flavor = FL_PROCEDURE;
7972 198 : sym->ts.interface->attr.function = 1;
7973 198 : sym->attr.function = 1;
7974 198 : sym->attr.if_source = IFSRC_UNKNOWN;
7975 : }
7976 :
7977 1260 : if (gfc_match (" =>") == MATCH_YES)
7978 : {
7979 110 : if (!current_attr.pointer)
7980 : {
7981 0 : gfc_error ("Initialization at %C isn't for a pointer variable");
7982 0 : m = MATCH_ERROR;
7983 0 : goto cleanup;
7984 : }
7985 :
7986 110 : m = match_pointer_init (&initializer, 1);
7987 110 : if (m != MATCH_YES)
7988 1 : goto cleanup;
7989 :
7990 109 : if (!add_init_expr_to_sym (sym->name, &initializer,
7991 : &gfc_current_locus,
7992 : gfc_current_ns->cl_list))
7993 0 : goto cleanup;
7994 :
7995 : }
7996 :
7997 1259 : if (gfc_match_eos () == MATCH_YES)
7998 : return MATCH_YES;
7999 79 : if (gfc_match_char (',') != MATCH_YES)
8000 0 : goto syntax;
8001 : }
8002 :
8003 1 : syntax:
8004 1 : gfc_error ("Syntax error in PROCEDURE statement at %C");
8005 1 : return MATCH_ERROR;
8006 :
8007 1 : cleanup:
8008 : /* Free stuff up and return. */
8009 1 : gfc_free_expr (initializer);
8010 1 : return m;
8011 : }
8012 :
8013 :
8014 : static match
8015 : match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc);
8016 :
8017 :
8018 : /* Match a procedure pointer component declaration (R445). */
8019 :
8020 : static match
8021 433 : match_ppc_decl (void)
8022 : {
8023 433 : match m;
8024 433 : gfc_symbol *proc_if = NULL;
8025 433 : gfc_typespec ts;
8026 433 : int num;
8027 433 : gfc_component *c;
8028 433 : gfc_expr *initializer = NULL;
8029 433 : gfc_typebound_proc* tb;
8030 433 : char name[GFC_MAX_SYMBOL_LEN + 1];
8031 :
8032 : /* Parse interface (with brackets). */
8033 433 : m = match_procedure_interface (&proc_if);
8034 433 : if (m != MATCH_YES)
8035 1 : goto syntax;
8036 :
8037 : /* Parse attributes. */
8038 432 : tb = XCNEW (gfc_typebound_proc);
8039 432 : tb->where = gfc_current_locus;
8040 432 : m = match_binding_attributes (tb, false, true);
8041 432 : if (m == MATCH_ERROR)
8042 : return m;
8043 :
8044 429 : gfc_clear_attr (¤t_attr);
8045 429 : current_attr.procedure = 1;
8046 429 : current_attr.proc_pointer = 1;
8047 429 : current_attr.access = tb->access;
8048 429 : current_attr.flavor = FL_PROCEDURE;
8049 :
8050 : /* Match the colons (required). */
8051 429 : if (gfc_match (" ::") != MATCH_YES)
8052 : {
8053 1 : gfc_error ("Expected %<::%> after binding-attributes at %C");
8054 1 : return MATCH_ERROR;
8055 : }
8056 :
8057 : /* Check for C450. */
8058 428 : if (!tb->nopass && proc_if == NULL)
8059 : {
8060 2 : gfc_error("NOPASS or explicit interface required at %C");
8061 2 : return MATCH_ERROR;
8062 : }
8063 :
8064 426 : if (!gfc_notify_std (GFC_STD_F2003, "Procedure pointer component at %C"))
8065 : return MATCH_ERROR;
8066 :
8067 : /* Match PPC names. */
8068 425 : ts = current_ts;
8069 425 : for(num=1;;num++)
8070 : {
8071 426 : m = gfc_match_name (name);
8072 426 : if (m == MATCH_NO)
8073 0 : goto syntax;
8074 426 : else if (m == MATCH_ERROR)
8075 : return m;
8076 :
8077 426 : if (!gfc_add_component (gfc_current_block(), name, &c))
8078 : return MATCH_ERROR;
8079 :
8080 : /* Add current_attr to the symbol attributes. */
8081 426 : if (!gfc_copy_attr (&c->attr, ¤t_attr, NULL))
8082 : return MATCH_ERROR;
8083 :
8084 426 : if (!gfc_add_external (&c->attr, NULL))
8085 : return MATCH_ERROR;
8086 :
8087 426 : if (!gfc_add_proc (&c->attr, name, NULL))
8088 : return MATCH_ERROR;
8089 :
8090 426 : if (num == 1)
8091 425 : c->tb = tb;
8092 : else
8093 : {
8094 1 : c->tb = XCNEW (gfc_typebound_proc);
8095 1 : c->tb->where = gfc_current_locus;
8096 1 : *c->tb = *tb;
8097 : }
8098 :
8099 426 : if (saved_kind_expr)
8100 0 : c->kind_expr = gfc_copy_expr (saved_kind_expr);
8101 :
8102 : /* Set interface. */
8103 426 : if (proc_if != NULL)
8104 : {
8105 359 : c->ts.interface = proc_if;
8106 359 : c->attr.untyped = 1;
8107 359 : c->attr.if_source = IFSRC_IFBODY;
8108 : }
8109 67 : else if (ts.type != BT_UNKNOWN)
8110 : {
8111 29 : c->ts = ts;
8112 29 : c->ts.interface = gfc_new_symbol ("", gfc_current_ns);
8113 29 : c->ts.interface->result = c->ts.interface;
8114 29 : c->ts.interface->ts = ts;
8115 29 : c->ts.interface->attr.flavor = FL_PROCEDURE;
8116 29 : c->ts.interface->attr.function = 1;
8117 29 : c->attr.function = 1;
8118 29 : c->attr.if_source = IFSRC_UNKNOWN;
8119 : }
8120 :
8121 426 : if (gfc_match (" =>") == MATCH_YES)
8122 : {
8123 73 : m = match_pointer_init (&initializer, 1);
8124 73 : if (m != MATCH_YES)
8125 : {
8126 0 : gfc_free_expr (initializer);
8127 0 : return m;
8128 : }
8129 73 : c->initializer = initializer;
8130 : }
8131 :
8132 426 : if (gfc_match_eos () == MATCH_YES)
8133 : return MATCH_YES;
8134 1 : if (gfc_match_char (',') != MATCH_YES)
8135 0 : goto syntax;
8136 : }
8137 :
8138 1 : syntax:
8139 1 : gfc_error ("Syntax error in procedure pointer component at %C");
8140 1 : return MATCH_ERROR;
8141 : }
8142 :
8143 :
8144 : /* Match a PROCEDURE declaration inside an interface (R1206). */
8145 :
8146 : static match
8147 1561 : match_procedure_in_interface (void)
8148 : {
8149 1561 : match m;
8150 1561 : gfc_symbol *sym;
8151 1561 : char name[GFC_MAX_SYMBOL_LEN + 1];
8152 1561 : locus old_locus;
8153 :
8154 1561 : if (current_interface.type == INTERFACE_NAMELESS
8155 1561 : || current_interface.type == INTERFACE_ABSTRACT)
8156 : {
8157 1 : gfc_error ("PROCEDURE at %C must be in a generic interface");
8158 1 : return MATCH_ERROR;
8159 : }
8160 :
8161 : /* Check if the F2008 optional double colon appears. */
8162 1560 : gfc_gobble_whitespace ();
8163 1560 : old_locus = gfc_current_locus;
8164 1560 : if (gfc_match ("::") == MATCH_YES)
8165 : {
8166 875 : if (!gfc_notify_std (GFC_STD_F2008, "double colon in "
8167 : "MODULE PROCEDURE statement at %L", &old_locus))
8168 : return MATCH_ERROR;
8169 : }
8170 : else
8171 685 : gfc_current_locus = old_locus;
8172 :
8173 2214 : for(;;)
8174 : {
8175 2214 : m = gfc_match_name (name);
8176 2214 : if (m == MATCH_NO)
8177 0 : goto syntax;
8178 2214 : else if (m == MATCH_ERROR)
8179 : return m;
8180 2214 : if (gfc_get_symbol (name, gfc_current_ns->parent, &sym))
8181 : return MATCH_ERROR;
8182 :
8183 2214 : if (!gfc_add_interface (sym))
8184 : return MATCH_ERROR;
8185 :
8186 2213 : if (gfc_match_eos () == MATCH_YES)
8187 : break;
8188 655 : if (gfc_match_char (',') != MATCH_YES)
8189 0 : goto syntax;
8190 : }
8191 :
8192 : return MATCH_YES;
8193 :
8194 0 : syntax:
8195 0 : gfc_error ("Syntax error in PROCEDURE statement at %C");
8196 0 : return MATCH_ERROR;
8197 : }
8198 :
8199 :
8200 : /* General matcher for PROCEDURE declarations. */
8201 :
8202 : static match match_procedure_in_type (void);
8203 :
8204 : match
8205 6433 : gfc_match_procedure (void)
8206 : {
8207 6433 : match m;
8208 :
8209 6433 : switch (gfc_current_state ())
8210 : {
8211 1197 : case COMP_NONE:
8212 1197 : case COMP_PROGRAM:
8213 1197 : case COMP_MODULE:
8214 1197 : case COMP_SUBMODULE:
8215 1197 : case COMP_SUBROUTINE:
8216 1197 : case COMP_FUNCTION:
8217 1197 : case COMP_BLOCK:
8218 1197 : m = match_procedure_decl ();
8219 1197 : break;
8220 1561 : case COMP_INTERFACE:
8221 1561 : m = match_procedure_in_interface ();
8222 1561 : break;
8223 433 : case COMP_DERIVED:
8224 433 : m = match_ppc_decl ();
8225 433 : break;
8226 3242 : case COMP_DERIVED_CONTAINS:
8227 3242 : m = match_procedure_in_type ();
8228 3242 : break;
8229 : default:
8230 : return MATCH_NO;
8231 : }
8232 :
8233 6433 : if (m != MATCH_YES)
8234 : return m;
8235 :
8236 6376 : if (!gfc_notify_std (GFC_STD_F2003, "PROCEDURE statement at %C"))
8237 4 : return MATCH_ERROR;
8238 :
8239 : return m;
8240 : }
8241 :
8242 :
8243 : /* Warn if a matched procedure has the same name as an intrinsic; this is
8244 : simply a wrapper around gfc_warn_intrinsic_shadow that interprets the current
8245 : parser-state-stack to find out whether we're in a module. */
8246 :
8247 : static void
8248 63741 : do_warn_intrinsic_shadow (const gfc_symbol* sym, bool func)
8249 : {
8250 63741 : bool in_module;
8251 :
8252 127482 : in_module = (gfc_state_stack->previous
8253 63741 : && (gfc_state_stack->previous->state == COMP_MODULE
8254 51962 : || gfc_state_stack->previous->state == COMP_SUBMODULE));
8255 :
8256 63741 : gfc_warn_intrinsic_shadow (sym, in_module, func);
8257 63741 : }
8258 :
8259 :
8260 : /* Match a function declaration. */
8261 :
8262 : match
8263 130404 : gfc_match_function_decl (void)
8264 : {
8265 130404 : char name[GFC_MAX_SYMBOL_LEN + 1];
8266 130404 : gfc_symbol *sym, *result;
8267 130404 : locus old_loc;
8268 130404 : match m;
8269 130404 : match suffix_match;
8270 130404 : match found_match; /* Status returned by match func. */
8271 :
8272 130404 : if (gfc_current_state () != COMP_NONE
8273 82292 : && gfc_current_state () != COMP_INTERFACE
8274 52871 : && gfc_current_state () != COMP_CONTAINS)
8275 : return MATCH_NO;
8276 :
8277 130404 : gfc_clear_ts (¤t_ts);
8278 :
8279 130404 : old_loc = gfc_current_locus;
8280 :
8281 130404 : m = gfc_match_prefix (¤t_ts);
8282 130404 : if (m != MATCH_YES)
8283 : {
8284 10017 : gfc_current_locus = old_loc;
8285 10017 : return m;
8286 : }
8287 :
8288 120387 : if (gfc_match ("function% %n", name) != MATCH_YES)
8289 : {
8290 100234 : gfc_current_locus = old_loc;
8291 100234 : return MATCH_NO;
8292 : }
8293 :
8294 20153 : if (get_proc_name (name, &sym, false))
8295 : return MATCH_ERROR;
8296 :
8297 20148 : if (add_hidden_procptr_result (sym))
8298 20 : sym = sym->result;
8299 :
8300 20148 : if (current_attr.module_procedure)
8301 : {
8302 304 : sym->attr.module_procedure = 1;
8303 304 : if (gfc_current_state () == COMP_INTERFACE)
8304 215 : gfc_current_ns->has_import_set = 1;
8305 : }
8306 :
8307 20148 : gfc_new_block = sym;
8308 :
8309 20148 : m = gfc_match_formal_arglist (sym, 0, 0);
8310 20148 : if (m == MATCH_NO)
8311 : {
8312 6 : gfc_error ("Expected formal argument list in function "
8313 : "definition at %C");
8314 6 : m = MATCH_ERROR;
8315 6 : goto cleanup;
8316 : }
8317 20142 : else if (m == MATCH_ERROR)
8318 0 : goto cleanup;
8319 :
8320 20142 : result = NULL;
8321 :
8322 : /* According to the draft, the bind(c) and result clause can
8323 : come in either order after the formal_arg_list (i.e., either
8324 : can be first, both can exist together or by themselves or neither
8325 : one). Therefore, the match_result can't match the end of the
8326 : string, and check for the bind(c) or result clause in either order. */
8327 20142 : found_match = gfc_match_eos ();
8328 :
8329 : /* Make sure that it isn't already declared as BIND(C). If it is, it
8330 : must have been marked BIND(C) with a BIND(C) attribute and that is
8331 : not allowed for procedures. */
8332 20142 : if (sym->attr.is_bind_c == 1)
8333 : {
8334 3 : sym->attr.is_bind_c = 0;
8335 :
8336 3 : if (gfc_state_stack->previous
8337 3 : && gfc_state_stack->previous->state != COMP_SUBMODULE)
8338 : {
8339 1 : locus loc;
8340 1 : loc = sym->old_symbol != NULL
8341 1 : ? sym->old_symbol->declared_at : gfc_current_locus;
8342 1 : gfc_error_now ("BIND(C) attribute at %L can only be used for "
8343 : "variables or common blocks", &loc);
8344 : }
8345 : }
8346 :
8347 20142 : if (found_match != MATCH_YES)
8348 : {
8349 : /* If we haven't found the end-of-statement, look for a suffix. */
8350 8375 : suffix_match = gfc_match_suffix (sym, &result);
8351 8375 : if (suffix_match == MATCH_YES)
8352 : /* Need to get the eos now. */
8353 8367 : found_match = gfc_match_eos ();
8354 : else
8355 : found_match = suffix_match;
8356 : }
8357 :
8358 : /* F2018 C1550 (R1526) If MODULE appears in the prefix of a module
8359 : subprogram and a binding label is specified, it shall be the
8360 : same as the binding label specified in the corresponding module
8361 : procedure interface body. */
8362 20142 : if (sym->attr.is_bind_c && sym->attr.module_procedure && sym->old_symbol
8363 3 : && strcmp (sym->name, sym->old_symbol->name) == 0
8364 3 : && sym->binding_label && sym->old_symbol->binding_label
8365 2 : && strcmp (sym->binding_label, sym->old_symbol->binding_label) != 0)
8366 : {
8367 1 : const char *null = "NULL", *s1, *s2;
8368 1 : s1 = sym->binding_label;
8369 1 : if (!s1) s1 = null;
8370 1 : s2 = sym->old_symbol->binding_label;
8371 1 : if (!s2) s2 = null;
8372 1 : gfc_error ("Mismatch in BIND(C) names (%qs/%qs) at %C", s1, s2);
8373 1 : sym->refs++; /* Needed to avoid an ICE in gfc_release_symbol */
8374 1 : return MATCH_ERROR;
8375 : }
8376 :
8377 20141 : if(found_match != MATCH_YES)
8378 : m = MATCH_ERROR;
8379 : else
8380 : {
8381 : /* Make changes to the symbol. */
8382 20133 : m = MATCH_ERROR;
8383 :
8384 20133 : if (!gfc_add_function (&sym->attr, sym->name, NULL))
8385 0 : goto cleanup;
8386 :
8387 20133 : if (!gfc_missing_attr (&sym->attr, NULL))
8388 0 : goto cleanup;
8389 :
8390 20133 : if (!copy_prefix (&sym->attr, &sym->declared_at))
8391 : {
8392 1 : if(!sym->attr.module_procedure)
8393 1 : goto cleanup;
8394 : else
8395 0 : gfc_error_check ();
8396 : }
8397 :
8398 : /* Delay matching the function characteristics until after the
8399 : specification block by signalling kind=-1. */
8400 20132 : sym->declared_at = old_loc;
8401 20132 : if (current_ts.type != BT_UNKNOWN)
8402 : current_ts.kind = -1;
8403 : else
8404 13196 : current_ts.kind = 0;
8405 :
8406 20132 : if (result == NULL)
8407 : {
8408 14281 : if (current_ts.type != BT_UNKNOWN
8409 14281 : && !gfc_add_type (sym, ¤t_ts, &gfc_current_locus))
8410 1 : goto cleanup;
8411 14280 : sym->result = sym;
8412 : }
8413 : else
8414 : {
8415 5851 : if (current_ts.type != BT_UNKNOWN
8416 5851 : && !gfc_add_type (result, ¤t_ts, &gfc_current_locus))
8417 0 : goto cleanup;
8418 5851 : sym->result = result;
8419 : }
8420 :
8421 : /* Warn if this procedure has the same name as an intrinsic. */
8422 20131 : do_warn_intrinsic_shadow (sym, true);
8423 :
8424 20131 : return MATCH_YES;
8425 : }
8426 :
8427 16 : cleanup:
8428 16 : gfc_current_locus = old_loc;
8429 16 : return m;
8430 : }
8431 :
8432 :
8433 : /* This is mostly a copy of parse.cc(add_global_procedure) but modified to
8434 : pass the name of the entry, rather than the gfc_current_block name, and
8435 : to return false upon finding an existing global entry. */
8436 :
8437 : static bool
8438 539 : add_global_entry (const char *name, const char *binding_label, bool sub,
8439 : locus *where)
8440 : {
8441 539 : gfc_gsymbol *s;
8442 539 : enum gfc_symbol_type type;
8443 :
8444 539 : type = sub ? GSYM_SUBROUTINE : GSYM_FUNCTION;
8445 :
8446 : /* Only in Fortran 2003: For procedures with a binding label also the Fortran
8447 : name is a global identifier. */
8448 539 : if (!binding_label || gfc_notification_std (GFC_STD_F2008))
8449 : {
8450 516 : s = gfc_get_gsymbol (name, false);
8451 :
8452 516 : if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type))
8453 : {
8454 2 : gfc_global_used (s, where);
8455 2 : return false;
8456 : }
8457 : else
8458 : {
8459 514 : s->type = type;
8460 514 : s->sym_name = name;
8461 514 : s->where = *where;
8462 514 : s->defined = 1;
8463 514 : s->ns = gfc_current_ns;
8464 : }
8465 : }
8466 :
8467 : /* Don't add the symbol multiple times. */
8468 537 : if (binding_label
8469 537 : && (!gfc_notification_std (GFC_STD_F2008)
8470 0 : || strcmp (name, binding_label) != 0))
8471 : {
8472 23 : s = gfc_get_gsymbol (binding_label, true);
8473 :
8474 23 : if (s->defined || (s->type != GSYM_UNKNOWN && s->type != type))
8475 : {
8476 1 : gfc_global_used (s, where);
8477 1 : return false;
8478 : }
8479 : else
8480 : {
8481 22 : s->type = type;
8482 22 : s->sym_name = gfc_get_string ("%s", name);
8483 22 : s->binding_label = binding_label;
8484 22 : s->where = *where;
8485 22 : s->defined = 1;
8486 22 : s->ns = gfc_current_ns;
8487 : }
8488 : }
8489 :
8490 : return true;
8491 : }
8492 :
8493 :
8494 : /* Match an ENTRY statement. */
8495 :
8496 : match
8497 805 : gfc_match_entry (void)
8498 : {
8499 805 : gfc_symbol *proc;
8500 805 : gfc_symbol *result;
8501 805 : gfc_symbol *entry;
8502 805 : char name[GFC_MAX_SYMBOL_LEN + 1];
8503 805 : gfc_compile_state state;
8504 805 : match m;
8505 805 : gfc_entry_list *el;
8506 805 : locus old_loc;
8507 805 : bool module_procedure;
8508 805 : char peek_char;
8509 805 : match is_bind_c;
8510 :
8511 805 : m = gfc_match_name (name);
8512 805 : if (m != MATCH_YES)
8513 : return m;
8514 :
8515 805 : if (!gfc_notify_std (GFC_STD_F2008_OBS, "ENTRY statement at %C"))
8516 : return MATCH_ERROR;
8517 :
8518 805 : state = gfc_current_state ();
8519 805 : if (state != COMP_SUBROUTINE && state != COMP_FUNCTION)
8520 : {
8521 3 : switch (state)
8522 : {
8523 0 : case COMP_PROGRAM:
8524 0 : gfc_error ("ENTRY statement at %C cannot appear within a PROGRAM");
8525 0 : break;
8526 0 : case COMP_MODULE:
8527 0 : gfc_error ("ENTRY statement at %C cannot appear within a MODULE");
8528 0 : break;
8529 0 : case COMP_SUBMODULE:
8530 0 : gfc_error ("ENTRY statement at %C cannot appear within a SUBMODULE");
8531 0 : break;
8532 0 : case COMP_BLOCK_DATA:
8533 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8534 : "a BLOCK DATA");
8535 0 : break;
8536 0 : case COMP_INTERFACE:
8537 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8538 : "an INTERFACE");
8539 0 : break;
8540 1 : case COMP_STRUCTURE:
8541 1 : gfc_error ("ENTRY statement at %C cannot appear within "
8542 : "a STRUCTURE block");
8543 1 : break;
8544 0 : case COMP_DERIVED:
8545 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8546 : "a DERIVED TYPE block");
8547 0 : break;
8548 0 : case COMP_IF:
8549 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8550 : "an IF-THEN block");
8551 0 : break;
8552 0 : case COMP_DO:
8553 0 : case COMP_DO_CONCURRENT:
8554 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8555 : "a DO block");
8556 0 : break;
8557 0 : case COMP_SELECT:
8558 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8559 : "a SELECT block");
8560 0 : break;
8561 0 : case COMP_FORALL:
8562 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8563 : "a FORALL block");
8564 0 : break;
8565 0 : case COMP_WHERE:
8566 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8567 : "a WHERE block");
8568 0 : break;
8569 0 : case COMP_CONTAINS:
8570 0 : gfc_error ("ENTRY statement at %C cannot appear within "
8571 : "a contained subprogram");
8572 0 : break;
8573 2 : default:
8574 2 : gfc_error ("Unexpected ENTRY statement at %C");
8575 : }
8576 : return MATCH_ERROR;
8577 : }
8578 :
8579 802 : if ((state == COMP_SUBROUTINE || state == COMP_FUNCTION)
8580 802 : && gfc_state_stack->previous->state == COMP_INTERFACE)
8581 : {
8582 1 : gfc_error ("ENTRY statement at %C cannot appear within an INTERFACE");
8583 1 : return MATCH_ERROR;
8584 : }
8585 :
8586 1602 : module_procedure = gfc_current_ns->parent != NULL
8587 260 : && gfc_current_ns->parent->proc_name
8588 801 : && gfc_current_ns->parent->proc_name->attr.flavor
8589 260 : == FL_MODULE;
8590 :
8591 801 : if (gfc_current_ns->parent != NULL
8592 260 : && gfc_current_ns->parent->proc_name
8593 260 : && !module_procedure)
8594 : {
8595 0 : gfc_error("ENTRY statement at %C cannot appear in a "
8596 : "contained procedure");
8597 0 : return MATCH_ERROR;
8598 : }
8599 :
8600 : /* Module function entries need special care in get_proc_name
8601 : because previous references within the function will have
8602 : created symbols attached to the current namespace. */
8603 1342 : if (get_proc_name (name, &entry,
8604 : gfc_current_ns->parent != NULL
8605 : && module_procedure))
8606 : return MATCH_ERROR;
8607 :
8608 799 : proc = gfc_current_block ();
8609 :
8610 : /* Make sure that it isn't already declared as BIND(C). If it is, it
8611 : must have been marked BIND(C) with a BIND(C) attribute and that is
8612 : not allowed for procedures. */
8613 799 : if (entry->attr.is_bind_c == 1)
8614 : {
8615 0 : locus loc;
8616 :
8617 0 : entry->attr.is_bind_c = 0;
8618 :
8619 0 : loc = entry->old_symbol != NULL
8620 0 : ? entry->old_symbol->declared_at : gfc_current_locus;
8621 0 : gfc_error_now ("BIND(C) attribute at %L can only be used for "
8622 : "variables or common blocks", &loc);
8623 : }
8624 :
8625 : /* Check what next non-whitespace character is so we can tell if there
8626 : is the required parens if we have a BIND(C). */
8627 799 : old_loc = gfc_current_locus;
8628 799 : gfc_gobble_whitespace ();
8629 799 : peek_char = gfc_peek_ascii_char ();
8630 :
8631 799 : if (state == COMP_SUBROUTINE)
8632 : {
8633 138 : m = gfc_match_formal_arglist (entry, 0, 1);
8634 138 : if (m != MATCH_YES)
8635 : return MATCH_ERROR;
8636 :
8637 : /* Call gfc_match_bind_c with allow_binding_name = true as ENTRY can
8638 : never be an internal procedure. */
8639 138 : is_bind_c = gfc_match_bind_c (entry, true);
8640 138 : if (is_bind_c == MATCH_ERROR)
8641 : return MATCH_ERROR;
8642 138 : if (is_bind_c == MATCH_YES)
8643 : {
8644 22 : if (peek_char != '(')
8645 : {
8646 0 : gfc_error ("Missing required parentheses before BIND(C) at %C");
8647 0 : return MATCH_ERROR;
8648 : }
8649 :
8650 22 : if (!gfc_add_is_bind_c (&(entry->attr), entry->name,
8651 22 : &(entry->declared_at), 1))
8652 : return MATCH_ERROR;
8653 :
8654 : }
8655 :
8656 138 : if (!gfc_current_ns->parent
8657 138 : && !add_global_entry (name, entry->binding_label, true,
8658 : &old_loc))
8659 : return MATCH_ERROR;
8660 :
8661 : /* An entry in a subroutine. */
8662 135 : if (!gfc_add_entry (&entry->attr, entry->name, NULL)
8663 135 : || !gfc_add_subroutine (&entry->attr, entry->name, NULL))
8664 : return MATCH_ERROR;
8665 : }
8666 : else
8667 : {
8668 : /* An entry in a function.
8669 : We need to take special care because writing
8670 : ENTRY f()
8671 : as
8672 : ENTRY f
8673 : is allowed, whereas
8674 : ENTRY f() RESULT (r)
8675 : can't be written as
8676 : ENTRY f RESULT (r). */
8677 661 : if (gfc_match_eos () == MATCH_YES)
8678 : {
8679 24 : gfc_current_locus = old_loc;
8680 : /* Match the empty argument list, and add the interface to
8681 : the symbol. */
8682 24 : m = gfc_match_formal_arglist (entry, 0, 1);
8683 : }
8684 : else
8685 637 : m = gfc_match_formal_arglist (entry, 0, 0);
8686 :
8687 661 : if (m != MATCH_YES)
8688 : return MATCH_ERROR;
8689 :
8690 660 : result = NULL;
8691 :
8692 660 : if (gfc_match_eos () == MATCH_YES)
8693 : {
8694 411 : if (!gfc_add_entry (&entry->attr, entry->name, NULL)
8695 411 : || !gfc_add_function (&entry->attr, entry->name, NULL))
8696 : return MATCH_ERROR;
8697 :
8698 409 : entry->result = entry;
8699 : }
8700 : else
8701 : {
8702 249 : m = gfc_match_suffix (entry, &result);
8703 249 : if (m == MATCH_NO)
8704 0 : gfc_syntax_error (ST_ENTRY);
8705 249 : if (m != MATCH_YES)
8706 : return MATCH_ERROR;
8707 :
8708 249 : if (result)
8709 : {
8710 212 : if (!gfc_add_result (&result->attr, result->name, NULL)
8711 212 : || !gfc_add_entry (&entry->attr, result->name, NULL)
8712 424 : || !gfc_add_function (&entry->attr, result->name, NULL))
8713 : return MATCH_ERROR;
8714 212 : entry->result = result;
8715 : }
8716 : else
8717 : {
8718 37 : if (!gfc_add_entry (&entry->attr, entry->name, NULL)
8719 37 : || !gfc_add_function (&entry->attr, entry->name, NULL))
8720 : return MATCH_ERROR;
8721 37 : entry->result = entry;
8722 : }
8723 : }
8724 :
8725 658 : if (!gfc_current_ns->parent
8726 658 : && !add_global_entry (name, entry->binding_label, false,
8727 : &old_loc))
8728 : return MATCH_ERROR;
8729 : }
8730 :
8731 790 : if (gfc_match_eos () != MATCH_YES)
8732 : {
8733 0 : gfc_syntax_error (ST_ENTRY);
8734 0 : return MATCH_ERROR;
8735 : }
8736 :
8737 : /* F2018:C1546 An elemental procedure shall not have the BIND attribute. */
8738 790 : if (proc->attr.elemental && entry->attr.is_bind_c)
8739 : {
8740 2 : gfc_error ("ENTRY statement at %L with BIND(C) prohibited in an "
8741 : "elemental procedure", &entry->declared_at);
8742 2 : return MATCH_ERROR;
8743 : }
8744 :
8745 788 : entry->attr.recursive = proc->attr.recursive;
8746 788 : entry->attr.elemental = proc->attr.elemental;
8747 788 : entry->attr.pure = proc->attr.pure;
8748 :
8749 788 : el = gfc_get_entry_list ();
8750 788 : el->sym = entry;
8751 788 : el->next = gfc_current_ns->entries;
8752 788 : gfc_current_ns->entries = el;
8753 788 : if (el->next)
8754 85 : el->id = el->next->id + 1;
8755 : else
8756 : el->id = 1;
8757 :
8758 788 : new_st.op = EXEC_ENTRY;
8759 788 : new_st.ext.entry = el;
8760 :
8761 788 : return MATCH_YES;
8762 : }
8763 :
8764 :
8765 : /* Match a subroutine statement, including optional prefixes. */
8766 :
8767 : match
8768 814161 : gfc_match_subroutine (void)
8769 : {
8770 814161 : char name[GFC_MAX_SYMBOL_LEN + 1];
8771 814161 : gfc_symbol *sym;
8772 814161 : match m;
8773 814161 : match is_bind_c;
8774 814161 : char peek_char;
8775 814161 : bool allow_binding_name;
8776 814161 : locus loc;
8777 :
8778 814161 : if (gfc_current_state () != COMP_NONE
8779 771949 : && gfc_current_state () != COMP_INTERFACE
8780 749108 : && gfc_current_state () != COMP_CONTAINS)
8781 : return MATCH_NO;
8782 :
8783 107345 : m = gfc_match_prefix (NULL);
8784 107345 : if (m != MATCH_YES)
8785 : return m;
8786 :
8787 97338 : loc = gfc_current_locus;
8788 97338 : m = gfc_match ("subroutine% %n", name);
8789 97338 : if (m != MATCH_YES)
8790 : return m;
8791 :
8792 43646 : if (get_proc_name (name, &sym, false))
8793 : return MATCH_ERROR;
8794 :
8795 : /* Set declared_at as it might point to, e.g., a PUBLIC statement, if
8796 : the symbol existed before. */
8797 43635 : sym->declared_at = gfc_get_location_range (NULL, 0, &loc, 1,
8798 : &gfc_current_locus);
8799 :
8800 43635 : if (current_attr.module_procedure)
8801 : {
8802 429 : sym->attr.module_procedure = 1;
8803 429 : if (gfc_current_state () == COMP_INTERFACE)
8804 302 : gfc_current_ns->has_import_set = 1;
8805 : }
8806 :
8807 43635 : if (add_hidden_procptr_result (sym))
8808 9 : sym = sym->result;
8809 :
8810 43635 : gfc_new_block = sym;
8811 :
8812 : /* Check what next non-whitespace character is so we can tell if there
8813 : is the required parens if we have a BIND(C). */
8814 43635 : gfc_gobble_whitespace ();
8815 43635 : peek_char = gfc_peek_ascii_char ();
8816 :
8817 43635 : if (!gfc_add_subroutine (&sym->attr, sym->name, NULL))
8818 : return MATCH_ERROR;
8819 :
8820 43632 : if (gfc_match_formal_arglist (sym, 0, 1) != MATCH_YES)
8821 : return MATCH_ERROR;
8822 :
8823 : /* Make sure that it isn't already declared as BIND(C). If it is, it
8824 : must have been marked BIND(C) with a BIND(C) attribute and that is
8825 : not allowed for procedures. */
8826 43632 : if (sym->attr.is_bind_c == 1)
8827 : {
8828 4 : sym->attr.is_bind_c = 0;
8829 :
8830 4 : if (gfc_state_stack->previous
8831 4 : && gfc_state_stack->previous->state != COMP_SUBMODULE)
8832 : {
8833 2 : locus loc;
8834 2 : loc = sym->old_symbol != NULL
8835 2 : ? sym->old_symbol->declared_at : gfc_current_locus;
8836 2 : gfc_error_now ("BIND(C) attribute at %L can only be used for "
8837 : "variables or common blocks", &loc);
8838 : }
8839 : }
8840 :
8841 : /* C binding names are not allowed for internal procedures. */
8842 43632 : if (gfc_current_state () == COMP_CONTAINS
8843 26536 : && sym->ns->proc_name->attr.flavor != FL_MODULE)
8844 : allow_binding_name = false;
8845 : else
8846 28492 : allow_binding_name = true;
8847 :
8848 : /* Here, we are just checking if it has the bind(c) attribute, and if
8849 : so, then we need to make sure it's all correct. If it doesn't,
8850 : we still need to continue matching the rest of the subroutine line. */
8851 43632 : gfc_gobble_whitespace ();
8852 43632 : loc = gfc_current_locus;
8853 43632 : is_bind_c = gfc_match_bind_c (sym, allow_binding_name);
8854 43632 : if (is_bind_c == MATCH_ERROR)
8855 : {
8856 : /* There was an attempt at the bind(c), but it was wrong. An
8857 : error message should have been printed w/in the gfc_match_bind_c
8858 : so here we'll just return the MATCH_ERROR. */
8859 : return MATCH_ERROR;
8860 : }
8861 :
8862 43619 : if (is_bind_c == MATCH_YES)
8863 : {
8864 4053 : gfc_formal_arglist *arg;
8865 :
8866 : /* The following is allowed in the Fortran 2008 draft. */
8867 4053 : if (gfc_current_state () == COMP_CONTAINS
8868 1299 : && sym->ns->proc_name->attr.flavor != FL_MODULE
8869 4464 : && !gfc_notify_std (GFC_STD_F2008, "BIND(C) attribute "
8870 : "at %L may not be specified for an internal "
8871 : "procedure", &gfc_current_locus))
8872 : return MATCH_ERROR;
8873 :
8874 4050 : if (peek_char != '(')
8875 : {
8876 1 : gfc_error ("Missing required parentheses before BIND(C) at %C");
8877 1 : return MATCH_ERROR;
8878 : }
8879 :
8880 : /* F2018 C1550 (R1526) If MODULE appears in the prefix of a module
8881 : subprogram and a binding label is specified, it shall be the
8882 : same as the binding label specified in the corresponding module
8883 : procedure interface body. */
8884 4049 : if (sym->attr.module_procedure && sym->old_symbol
8885 3 : && strcmp (sym->name, sym->old_symbol->name) == 0
8886 3 : && sym->binding_label && sym->old_symbol->binding_label
8887 2 : && strcmp (sym->binding_label, sym->old_symbol->binding_label) != 0)
8888 : {
8889 1 : const char *null = "NULL", *s1, *s2;
8890 1 : s1 = sym->binding_label;
8891 1 : if (!s1) s1 = null;
8892 1 : s2 = sym->old_symbol->binding_label;
8893 1 : if (!s2) s2 = null;
8894 1 : gfc_error ("Mismatch in BIND(C) names (%qs/%qs) at %C", s1, s2);
8895 1 : sym->refs++; /* Needed to avoid an ICE in gfc_release_symbol */
8896 1 : return MATCH_ERROR;
8897 : }
8898 :
8899 : /* Scan the dummy arguments for an alternate return. */
8900 12535 : for (arg = sym->formal; arg; arg = arg->next)
8901 8488 : if (!arg->sym)
8902 : {
8903 1 : gfc_error ("Alternate return dummy argument cannot appear in a "
8904 : "SUBROUTINE with the BIND(C) attribute at %L", &loc);
8905 1 : return MATCH_ERROR;
8906 : }
8907 :
8908 4047 : if (!gfc_add_is_bind_c (&(sym->attr), sym->name, &(sym->declared_at), 1))
8909 : return MATCH_ERROR;
8910 : }
8911 :
8912 43612 : if (gfc_match_eos () != MATCH_YES)
8913 : {
8914 1 : gfc_syntax_error (ST_SUBROUTINE);
8915 1 : return MATCH_ERROR;
8916 : }
8917 :
8918 43611 : if (!copy_prefix (&sym->attr, &sym->declared_at))
8919 : {
8920 4 : if(!sym->attr.module_procedure)
8921 : return MATCH_ERROR;
8922 : else
8923 3 : gfc_error_check ();
8924 : }
8925 :
8926 : /* Warn if it has the same name as an intrinsic. */
8927 43610 : do_warn_intrinsic_shadow (sym, false);
8928 :
8929 43610 : return MATCH_YES;
8930 : }
8931 :
8932 :
8933 : /* Check that the NAME identifier in a BIND attribute or statement
8934 : is conform to C identifier rules. */
8935 :
8936 : match
8937 1187 : check_bind_name_identifier (char **name)
8938 : {
8939 1187 : char *n = *name, *p;
8940 :
8941 : /* Remove leading spaces. */
8942 1213 : while (*n == ' ')
8943 26 : n++;
8944 :
8945 : /* On an empty string, free memory and set name to NULL. */
8946 1187 : if (*n == '\0')
8947 : {
8948 42 : free (*name);
8949 42 : *name = NULL;
8950 42 : return MATCH_YES;
8951 : }
8952 :
8953 : /* Remove trailing spaces. */
8954 1145 : p = n + strlen(n) - 1;
8955 1161 : while (*p == ' ')
8956 16 : *(p--) = '\0';
8957 :
8958 : /* Insert the identifier into the symbol table. */
8959 1145 : p = xstrdup (n);
8960 1145 : free (*name);
8961 1145 : *name = p;
8962 :
8963 : /* Now check that identifier is valid under C rules. */
8964 1145 : if (ISDIGIT (*p))
8965 : {
8966 2 : gfc_error ("Invalid C identifier in NAME= specifier at %C");
8967 2 : return MATCH_ERROR;
8968 : }
8969 :
8970 12512 : for (; *p; p++)
8971 11372 : if (!(ISALNUM (*p) || *p == '_' || *p == '$'))
8972 : {
8973 3 : gfc_error ("Invalid C identifier in NAME= specifier at %C");
8974 3 : return MATCH_ERROR;
8975 : }
8976 :
8977 : return MATCH_YES;
8978 : }
8979 :
8980 :
8981 : /* Match a BIND(C) specifier, with the optional 'name=' specifier if
8982 : given, and set the binding label in either the given symbol (if not
8983 : NULL), or in the current_ts. The symbol may be NULL because we may
8984 : encounter the BIND(C) before the declaration itself. Return
8985 : MATCH_NO if what we're looking at isn't a BIND(C) specifier,
8986 : MATCH_ERROR if it is a BIND(C) clause but an error was encountered,
8987 : or MATCH_YES if the specifier was correct and the binding label and
8988 : bind(c) fields were set correctly for the given symbol or the
8989 : current_ts. If allow_binding_name is false, no binding name may be
8990 : given. */
8991 :
8992 : match
8993 52697 : gfc_match_bind_c (gfc_symbol *sym, bool allow_binding_name)
8994 : {
8995 52697 : char *binding_label = NULL;
8996 52697 : gfc_expr *e = NULL;
8997 :
8998 : /* Initialize the flag that specifies whether we encountered a NAME=
8999 : specifier or not. */
9000 52697 : has_name_equals = 0;
9001 :
9002 : /* This much we have to be able to match, in this order, if
9003 : there is a bind(c) label. */
9004 52697 : if (gfc_match (" bind ( c ") != MATCH_YES)
9005 : return MATCH_NO;
9006 :
9007 : /* Now see if there is a binding label, or if we've reached the
9008 : end of the bind(c) attribute without one. */
9009 7458 : if (gfc_match_char (',') == MATCH_YES)
9010 : {
9011 1194 : if (gfc_match (" name = ") != MATCH_YES)
9012 : {
9013 1 : gfc_error ("Syntax error in NAME= specifier for binding label "
9014 : "at %C");
9015 : /* should give an error message here */
9016 1 : return MATCH_ERROR;
9017 : }
9018 :
9019 1193 : has_name_equals = 1;
9020 :
9021 1193 : if (gfc_match_init_expr (&e) != MATCH_YES)
9022 : {
9023 2 : gfc_free_expr (e);
9024 2 : return MATCH_ERROR;
9025 : }
9026 :
9027 1191 : if (!gfc_simplify_expr(e, 0))
9028 : {
9029 0 : gfc_error ("NAME= specifier at %C should be a constant expression");
9030 0 : gfc_free_expr (e);
9031 0 : return MATCH_ERROR;
9032 : }
9033 :
9034 1191 : if (e->expr_type != EXPR_CONSTANT || e->ts.type != BT_CHARACTER
9035 1188 : || e->ts.kind != gfc_default_character_kind || e->rank != 0)
9036 : {
9037 4 : gfc_error ("NAME= specifier at %C should be a scalar of "
9038 : "default character kind");
9039 4 : gfc_free_expr(e);
9040 4 : return MATCH_ERROR;
9041 : }
9042 :
9043 : // Get a C string from the Fortran string constant
9044 2374 : binding_label = gfc_widechar_to_char (e->value.character.string,
9045 1187 : e->value.character.length);
9046 1187 : gfc_free_expr(e);
9047 :
9048 : // Check that it is valid (old gfc_match_name_C)
9049 1187 : if (check_bind_name_identifier (&binding_label) != MATCH_YES)
9050 : return MATCH_ERROR;
9051 : }
9052 :
9053 : /* Get the required right paren. */
9054 7446 : if (gfc_match_char (')') != MATCH_YES)
9055 : {
9056 1 : gfc_error ("Missing closing paren for binding label at %C");
9057 1 : return MATCH_ERROR;
9058 : }
9059 :
9060 7445 : if (has_name_equals && !allow_binding_name)
9061 : {
9062 6 : gfc_error ("No binding name is allowed in BIND(C) at %C");
9063 6 : return MATCH_ERROR;
9064 : }
9065 :
9066 7439 : if (has_name_equals && sym != NULL && sym->attr.dummy)
9067 : {
9068 2 : gfc_error ("For dummy procedure %s, no binding name is "
9069 : "allowed in BIND(C) at %C", sym->name);
9070 2 : return MATCH_ERROR;
9071 : }
9072 :
9073 :
9074 : /* Save the binding label to the symbol. If sym is null, we're
9075 : probably matching the typespec attributes of a declaration and
9076 : haven't gotten the name yet, and therefore, no symbol yet. */
9077 7437 : if (binding_label)
9078 : {
9079 1133 : if (sym != NULL)
9080 1023 : sym->binding_label = binding_label;
9081 : else
9082 110 : curr_binding_label = binding_label;
9083 : }
9084 6304 : else if (allow_binding_name)
9085 : {
9086 : /* No binding label, but if symbol isn't null, we
9087 : can set the label for it here.
9088 : If name="" or allow_binding_name is false, no C binding name is
9089 : created. */
9090 5875 : if (sym != NULL && sym->name != NULL && has_name_equals == 0)
9091 5708 : sym->binding_label = IDENTIFIER_POINTER (get_identifier (sym->name));
9092 : }
9093 :
9094 7437 : if (has_name_equals && gfc_current_state () == COMP_INTERFACE
9095 741 : && current_interface.type == INTERFACE_ABSTRACT)
9096 : {
9097 1 : gfc_error ("NAME not allowed on BIND(C) for ABSTRACT INTERFACE at %C");
9098 1 : return MATCH_ERROR;
9099 : }
9100 :
9101 : return MATCH_YES;
9102 : }
9103 :
9104 :
9105 : /* Return nonzero if we're currently compiling a contained procedure. */
9106 :
9107 : static int
9108 64065 : contained_procedure (void)
9109 : {
9110 64065 : gfc_state_data *s = gfc_state_stack;
9111 :
9112 64065 : if ((s->state == COMP_SUBROUTINE || s->state == COMP_FUNCTION)
9113 63100 : && s->previous != NULL && s->previous->state == COMP_CONTAINS)
9114 37030 : return 1;
9115 :
9116 : return 0;
9117 : }
9118 :
9119 : /* Set the kind of each enumerator. The kind is selected such that it is
9120 : interoperable with the corresponding C enumeration type, making
9121 : sure that -fshort-enums is honored. */
9122 :
9123 : static void
9124 158 : set_enum_kind(void)
9125 : {
9126 158 : enumerator_history *current_history = NULL;
9127 158 : int kind;
9128 158 : int i;
9129 :
9130 158 : if (max_enum == NULL || enum_history == NULL)
9131 : return;
9132 :
9133 150 : if (!flag_short_enums)
9134 : return;
9135 :
9136 : i = 0;
9137 48 : do
9138 : {
9139 48 : kind = gfc_integer_kinds[i++].kind;
9140 : }
9141 48 : while (kind < gfc_c_int_kind
9142 72 : && gfc_check_integer_range (max_enum->initializer->value.integer,
9143 : kind) != ARITH_OK);
9144 :
9145 24 : current_history = enum_history;
9146 96 : while (current_history != NULL)
9147 : {
9148 72 : current_history->sym->ts.kind = kind;
9149 72 : current_history = current_history->next;
9150 : }
9151 : }
9152 :
9153 :
9154 : /* Match any of the various end-block statements. Returns the type of
9155 : END to the caller. The END INTERFACE, END IF, END DO, END SELECT
9156 : and END BLOCK statements cannot be replaced by a single END statement. */
9157 :
9158 : match
9159 187927 : gfc_match_end (gfc_statement *st)
9160 : {
9161 187927 : char name[GFC_MAX_SYMBOL_LEN + 1];
9162 187927 : gfc_compile_state state;
9163 187927 : locus old_loc;
9164 187927 : const char *block_name;
9165 187927 : const char *target;
9166 187927 : int eos_ok;
9167 187927 : match m;
9168 187927 : gfc_namespace *parent_ns, *ns, *prev_ns;
9169 187927 : gfc_namespace **nsp;
9170 187927 : bool abbreviated_modproc_decl = false;
9171 187927 : bool got_matching_end = false;
9172 :
9173 187927 : old_loc = gfc_current_locus;
9174 187927 : if (gfc_match ("end") != MATCH_YES)
9175 : return MATCH_NO;
9176 :
9177 182781 : state = gfc_current_state ();
9178 100196 : block_name = gfc_current_block () == NULL
9179 182781 : ? NULL : gfc_current_block ()->name;
9180 :
9181 182781 : switch (state)
9182 : {
9183 3148 : case COMP_ASSOCIATE:
9184 3148 : case COMP_BLOCK:
9185 3148 : case COMP_CHANGE_TEAM:
9186 3148 : if (startswith (block_name, "block@"))
9187 : block_name = NULL;
9188 : break;
9189 :
9190 17789 : case COMP_CONTAINS:
9191 17789 : case COMP_DERIVED_CONTAINS:
9192 17789 : case COMP_OMP_BEGIN_METADIRECTIVE:
9193 17789 : state = gfc_state_stack->previous->state;
9194 16223 : block_name = gfc_state_stack->previous->sym == NULL
9195 17789 : ? NULL : gfc_state_stack->previous->sym->name;
9196 17789 : abbreviated_modproc_decl = gfc_state_stack->previous->sym
9197 17789 : && gfc_state_stack->previous->sym->abr_modproc_decl;
9198 : break;
9199 :
9200 : case COMP_OMP_METADIRECTIVE:
9201 : {
9202 : /* Metadirectives can be nested, so we need to drill down to the
9203 : first state that is not COMP_OMP_METADIRECTIVE. */
9204 : gfc_state_data *state_data = gfc_state_stack;
9205 :
9206 85 : do
9207 : {
9208 85 : state_data = state_data->previous;
9209 85 : state = state_data->state;
9210 77 : block_name = (state_data->sym == NULL
9211 85 : ? NULL : state_data->sym->name);
9212 170 : abbreviated_modproc_decl = (state_data->sym
9213 85 : && state_data->sym->abr_modproc_decl);
9214 : }
9215 85 : while (state == COMP_OMP_METADIRECTIVE);
9216 :
9217 83 : if (block_name && startswith (block_name, "block@"))
9218 : block_name = NULL;
9219 : }
9220 : break;
9221 :
9222 : default:
9223 : break;
9224 : }
9225 :
9226 83 : if (!abbreviated_modproc_decl)
9227 182780 : abbreviated_modproc_decl = gfc_current_block ()
9228 182780 : && gfc_current_block ()->abr_modproc_decl;
9229 :
9230 182781 : switch (state)
9231 : {
9232 28222 : case COMP_NONE:
9233 28222 : case COMP_PROGRAM:
9234 28222 : *st = ST_END_PROGRAM;
9235 28222 : target = " program";
9236 28222 : eos_ok = 1;
9237 28222 : break;
9238 :
9239 43800 : case COMP_SUBROUTINE:
9240 43800 : *st = ST_END_SUBROUTINE;
9241 43800 : if (!abbreviated_modproc_decl)
9242 : target = " subroutine";
9243 : else
9244 148 : target = " procedure";
9245 43800 : eos_ok = !contained_procedure ();
9246 43800 : break;
9247 :
9248 20265 : case COMP_FUNCTION:
9249 20265 : *st = ST_END_FUNCTION;
9250 20265 : if (!abbreviated_modproc_decl)
9251 : target = " function";
9252 : else
9253 117 : target = " procedure";
9254 20265 : eos_ok = !contained_procedure ();
9255 20265 : break;
9256 :
9257 87 : case COMP_BLOCK_DATA:
9258 87 : *st = ST_END_BLOCK_DATA;
9259 87 : target = " block data";
9260 87 : eos_ok = 1;
9261 87 : break;
9262 :
9263 9999 : case COMP_MODULE:
9264 9999 : *st = ST_END_MODULE;
9265 9999 : target = " module";
9266 9999 : eos_ok = 1;
9267 9999 : break;
9268 :
9269 268 : case COMP_SUBMODULE:
9270 268 : *st = ST_END_SUBMODULE;
9271 268 : target = " submodule";
9272 268 : eos_ok = 1;
9273 268 : break;
9274 :
9275 11353 : case COMP_INTERFACE:
9276 11353 : *st = ST_END_INTERFACE;
9277 11353 : target = " interface";
9278 11353 : eos_ok = 0;
9279 11353 : break;
9280 :
9281 257 : case COMP_MAP:
9282 257 : *st = ST_END_MAP;
9283 257 : target = " map";
9284 257 : eos_ok = 0;
9285 257 : break;
9286 :
9287 132 : case COMP_UNION:
9288 132 : *st = ST_END_UNION;
9289 132 : target = " union";
9290 132 : eos_ok = 0;
9291 132 : break;
9292 :
9293 313 : case COMP_STRUCTURE:
9294 313 : *st = ST_END_STRUCTURE;
9295 313 : target = " structure";
9296 313 : eos_ok = 0;
9297 313 : break;
9298 :
9299 13270 : case COMP_DERIVED:
9300 13270 : case COMP_DERIVED_CONTAINS:
9301 13270 : *st = ST_END_TYPE;
9302 13270 : target = " type";
9303 13270 : eos_ok = 0;
9304 13270 : break;
9305 :
9306 1579 : case COMP_ASSOCIATE:
9307 1579 : *st = ST_END_ASSOCIATE;
9308 1579 : target = " associate";
9309 1579 : eos_ok = 0;
9310 1579 : break;
9311 :
9312 1501 : case COMP_BLOCK:
9313 1501 : case COMP_OMP_STRICTLY_STRUCTURED_BLOCK:
9314 1501 : *st = ST_END_BLOCK;
9315 1501 : target = " block";
9316 1501 : eos_ok = 0;
9317 1501 : break;
9318 :
9319 14959 : case COMP_IF:
9320 14959 : *st = ST_ENDIF;
9321 14959 : target = " if";
9322 14959 : eos_ok = 0;
9323 14959 : break;
9324 :
9325 30855 : case COMP_DO:
9326 30855 : case COMP_DO_CONCURRENT:
9327 30855 : *st = ST_ENDDO;
9328 30855 : target = " do";
9329 30855 : eos_ok = 0;
9330 30855 : break;
9331 :
9332 54 : case COMP_CRITICAL:
9333 54 : *st = ST_END_CRITICAL;
9334 54 : target = " critical";
9335 54 : eos_ok = 0;
9336 54 : break;
9337 :
9338 4720 : case COMP_SELECT:
9339 4720 : case COMP_SELECT_TYPE:
9340 4720 : case COMP_SELECT_RANK:
9341 4720 : *st = ST_END_SELECT;
9342 4720 : target = " select";
9343 4720 : eos_ok = 0;
9344 4720 : break;
9345 :
9346 509 : case COMP_FORALL:
9347 509 : *st = ST_END_FORALL;
9348 509 : target = " forall";
9349 509 : eos_ok = 0;
9350 509 : break;
9351 :
9352 373 : case COMP_WHERE:
9353 373 : *st = ST_END_WHERE;
9354 373 : target = " where";
9355 373 : eos_ok = 0;
9356 373 : break;
9357 :
9358 158 : case COMP_ENUM:
9359 158 : *st = ST_END_ENUM;
9360 158 : target = " enum";
9361 158 : eos_ok = 0;
9362 158 : last_initializer = NULL;
9363 158 : set_enum_kind ();
9364 158 : gfc_free_enum_history ();
9365 158 : break;
9366 :
9367 0 : case COMP_OMP_BEGIN_METADIRECTIVE:
9368 0 : *st = ST_OMP_END_METADIRECTIVE;
9369 0 : target = " metadirective";
9370 0 : eos_ok = 0;
9371 0 : break;
9372 :
9373 98 : case COMP_CHANGE_TEAM:
9374 98 : *st = ST_END_TEAM;
9375 98 : target = " team";
9376 98 : eos_ok = 0;
9377 98 : break;
9378 :
9379 9 : default:
9380 9 : gfc_error ("Unexpected END statement at %C");
9381 9 : goto cleanup;
9382 : }
9383 :
9384 182772 : old_loc = gfc_current_locus;
9385 182772 : if (gfc_match_eos () == MATCH_YES)
9386 : {
9387 20820 : if (!eos_ok && (*st == ST_END_SUBROUTINE || *st == ST_END_FUNCTION))
9388 : {
9389 8167 : if (!gfc_notify_std (GFC_STD_F2008, "END statement "
9390 : "instead of %s statement at %L",
9391 : abbreviated_modproc_decl ? "END PROCEDURE"
9392 4071 : : gfc_ascii_statement(*st), &old_loc))
9393 4 : goto cleanup;
9394 : }
9395 9 : else if (!eos_ok)
9396 : {
9397 : /* We would have required END [something]. */
9398 9 : gfc_error ("%s statement expected at %L",
9399 : gfc_ascii_statement (*st), &old_loc);
9400 9 : goto cleanup;
9401 : }
9402 :
9403 : return MATCH_YES;
9404 : }
9405 :
9406 : /* Verify that we've got the sort of end-block that we're expecting. */
9407 161952 : if (gfc_match (target) != MATCH_YES)
9408 : {
9409 331 : gfc_error ("Expecting %s statement at %L", abbreviated_modproc_decl
9410 165 : ? "END PROCEDURE" : gfc_ascii_statement(*st), &old_loc);
9411 166 : goto cleanup;
9412 : }
9413 : else
9414 161786 : got_matching_end = true;
9415 :
9416 161786 : if (*st == ST_END_TEAM && gfc_match_end_team () == MATCH_ERROR)
9417 : /* Emit errors of stat and errmsg parsing now to finish the block and
9418 : continue analysis of compilation unit. */
9419 2 : gfc_error_check ();
9420 :
9421 161786 : old_loc = gfc_current_locus;
9422 : /* If we're at the end, make sure a block name wasn't required. */
9423 161786 : if (gfc_match_eos () == MATCH_YES)
9424 : {
9425 106798 : if (*st != ST_ENDDO && *st != ST_ENDIF && *st != ST_END_SELECT
9426 : && *st != ST_END_FORALL && *st != ST_END_WHERE && *st != ST_END_BLOCK
9427 : && *st != ST_END_ASSOCIATE && *st != ST_END_CRITICAL
9428 : && *st != ST_END_TEAM)
9429 : return MATCH_YES;
9430 :
9431 54149 : if (!block_name)
9432 : return MATCH_YES;
9433 :
9434 8 : gfc_error ("Expected block name of %qs in %s statement at %L",
9435 : block_name, gfc_ascii_statement (*st), &old_loc);
9436 :
9437 8 : return MATCH_ERROR;
9438 : }
9439 :
9440 : /* END INTERFACE has a special handler for its several possible endings. */
9441 54988 : if (*st == ST_END_INTERFACE)
9442 696 : return gfc_match_end_interface ();
9443 :
9444 : /* We haven't hit the end of statement, so what is left must be an
9445 : end-name. */
9446 54292 : m = gfc_match_space ();
9447 54292 : if (m == MATCH_YES)
9448 54292 : m = gfc_match_name (name);
9449 :
9450 54292 : if (m == MATCH_NO)
9451 0 : gfc_error ("Expected terminating name at %C");
9452 54292 : if (m != MATCH_YES)
9453 0 : goto cleanup;
9454 :
9455 54292 : if (block_name == NULL)
9456 15 : goto syntax;
9457 :
9458 : /* We have to pick out the declared submodule name from the composite
9459 : required by F2008:11.2.3 para 2, which ends in the declared name. */
9460 54277 : if (state == COMP_SUBMODULE)
9461 137 : block_name = strchr (block_name, '.') + 1;
9462 :
9463 54277 : if (strcmp (name, block_name) != 0 && strcmp (block_name, "ppr@") != 0)
9464 : {
9465 8 : gfc_error ("Expected label %qs for %s statement at %C", block_name,
9466 : gfc_ascii_statement (*st));
9467 8 : goto cleanup;
9468 : }
9469 : /* Procedure pointer as function result. */
9470 54269 : else if (strcmp (block_name, "ppr@") == 0
9471 21 : && strcmp (name, gfc_current_block ()->ns->proc_name->name) != 0)
9472 : {
9473 0 : gfc_error ("Expected label %qs for %s statement at %C",
9474 0 : gfc_current_block ()->ns->proc_name->name,
9475 : gfc_ascii_statement (*st));
9476 0 : goto cleanup;
9477 : }
9478 :
9479 54269 : if (gfc_match_eos () == MATCH_YES)
9480 : return MATCH_YES;
9481 :
9482 0 : syntax:
9483 15 : gfc_syntax_error (*st);
9484 :
9485 211 : cleanup:
9486 211 : gfc_current_locus = old_loc;
9487 :
9488 : /* If we are missing an END BLOCK, we created a half-ready namespace.
9489 : Remove it from the parent namespace's sibling list. */
9490 :
9491 211 : if (state == COMP_BLOCK && !got_matching_end)
9492 : {
9493 7 : parent_ns = gfc_current_ns->parent;
9494 :
9495 7 : nsp = &(gfc_state_stack->previous->tail->ext.block.ns);
9496 :
9497 7 : prev_ns = NULL;
9498 7 : ns = *nsp;
9499 14 : while (ns)
9500 : {
9501 7 : if (ns == gfc_current_ns)
9502 : {
9503 7 : if (prev_ns == NULL)
9504 7 : *nsp = NULL;
9505 : else
9506 0 : prev_ns->sibling = ns->sibling;
9507 : }
9508 7 : prev_ns = ns;
9509 7 : ns = ns->sibling;
9510 : }
9511 :
9512 : /* The namespace can still be referenced by parser state and code nodes;
9513 : let normal block unwinding/freeing own its lifetime. */
9514 7 : gfc_current_ns = parent_ns;
9515 7 : gfc_state_stack = gfc_state_stack->previous;
9516 7 : state = gfc_current_state ();
9517 : }
9518 :
9519 : return MATCH_ERROR;
9520 : }
9521 :
9522 :
9523 :
9524 : /***************** Attribute declaration statements ****************/
9525 :
9526 : /* Set the attribute of a single variable. */
9527 :
9528 : static match
9529 10427 : attr_decl1 (void)
9530 : {
9531 10427 : char name[GFC_MAX_SYMBOL_LEN + 1];
9532 10427 : gfc_array_spec *as;
9533 :
9534 : /* Workaround -Wmaybe-uninitialized false positive during
9535 : profiledbootstrap by initializing them. */
9536 10427 : gfc_symbol *sym = NULL;
9537 10427 : locus var_locus;
9538 10427 : match m;
9539 :
9540 10427 : as = NULL;
9541 :
9542 10427 : m = gfc_match_name (name);
9543 10427 : if (m != MATCH_YES)
9544 0 : goto cleanup;
9545 :
9546 10427 : if (find_special (name, &sym, false))
9547 : return MATCH_ERROR;
9548 :
9549 10427 : if (!check_function_name (name))
9550 : {
9551 7 : m = MATCH_ERROR;
9552 7 : goto cleanup;
9553 : }
9554 :
9555 10420 : var_locus = gfc_current_locus;
9556 :
9557 : /* Deal with possible array specification for certain attributes. */
9558 10420 : if (current_attr.dimension
9559 8841 : || current_attr.codimension
9560 8819 : || current_attr.allocatable
9561 8395 : || current_attr.pointer
9562 7672 : || current_attr.target)
9563 : {
9564 6174 : m = gfc_match_array_spec (&as, !current_attr.codimension,
9565 : !current_attr.dimension
9566 1395 : && !current_attr.pointer
9567 : && !current_attr.target);
9568 2974 : if (m == MATCH_ERROR)
9569 2 : goto cleanup;
9570 :
9571 2972 : if (current_attr.dimension && m == MATCH_NO)
9572 : {
9573 0 : gfc_error ("Missing array specification at %L in DIMENSION "
9574 : "statement", &var_locus);
9575 0 : m = MATCH_ERROR;
9576 0 : goto cleanup;
9577 : }
9578 :
9579 2972 : if (current_attr.dimension && sym->value)
9580 : {
9581 1 : gfc_error ("Dimensions specified for %s at %L after its "
9582 : "initialization", sym->name, &var_locus);
9583 1 : m = MATCH_ERROR;
9584 1 : goto cleanup;
9585 : }
9586 :
9587 2971 : if (current_attr.codimension && m == MATCH_NO)
9588 : {
9589 0 : gfc_error ("Missing array specification at %L in CODIMENSION "
9590 : "statement", &var_locus);
9591 0 : m = MATCH_ERROR;
9592 0 : goto cleanup;
9593 : }
9594 :
9595 2971 : if ((current_attr.allocatable || current_attr.pointer)
9596 1147 : && (m == MATCH_YES) && (as->type != AS_DEFERRED))
9597 : {
9598 0 : gfc_error ("Array specification must be deferred at %L", &var_locus);
9599 0 : m = MATCH_ERROR;
9600 0 : goto cleanup;
9601 : }
9602 : }
9603 :
9604 10417 : if (sym->ts.type == BT_CLASS
9605 200 : && sym->ts.u.derived
9606 200 : && sym->ts.u.derived->attr.is_class)
9607 : {
9608 177 : sym->attr.pointer = CLASS_DATA(sym)->attr.class_pointer;
9609 177 : sym->attr.allocatable = CLASS_DATA(sym)->attr.allocatable;
9610 177 : sym->attr.dimension = CLASS_DATA(sym)->attr.dimension;
9611 177 : sym->attr.codimension = CLASS_DATA(sym)->attr.codimension;
9612 177 : if (CLASS_DATA (sym)->as)
9613 123 : sym->as = gfc_copy_array_spec (CLASS_DATA (sym)->as);
9614 : }
9615 8840 : if (current_attr.dimension == 0 && current_attr.codimension == 0
9616 19236 : && !gfc_copy_attr (&sym->attr, ¤t_attr, &var_locus))
9617 : {
9618 22 : m = MATCH_ERROR;
9619 22 : goto cleanup;
9620 : }
9621 10395 : if (!gfc_set_array_spec (sym, as, &var_locus))
9622 : {
9623 18 : m = MATCH_ERROR;
9624 18 : goto cleanup;
9625 : }
9626 :
9627 10377 : if (sym->attr.cray_pointee && sym->as != NULL)
9628 : {
9629 : /* Fix the array spec. */
9630 2 : m = gfc_mod_pointee_as (sym->as);
9631 2 : if (m == MATCH_ERROR)
9632 0 : goto cleanup;
9633 : }
9634 :
9635 10377 : if (!gfc_add_attribute (&sym->attr, &var_locus))
9636 : {
9637 0 : m = MATCH_ERROR;
9638 0 : goto cleanup;
9639 : }
9640 :
9641 5740 : if ((current_attr.external || current_attr.intrinsic)
9642 6289 : && sym->attr.flavor != FL_PROCEDURE
9643 16634 : && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL))
9644 : {
9645 0 : m = MATCH_ERROR;
9646 0 : goto cleanup;
9647 : }
9648 :
9649 10377 : if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class
9650 169 : && !as && !current_attr.pointer && !current_attr.allocatable
9651 136 : && !current_attr.external)
9652 : {
9653 136 : sym->attr.pointer = 0;
9654 136 : sym->attr.allocatable = 0;
9655 136 : sym->attr.dimension = 0;
9656 136 : sym->attr.codimension = 0;
9657 136 : gfc_free_array_spec (sym->as);
9658 136 : sym->as = NULL;
9659 : }
9660 10241 : else if (sym->ts.type == BT_CLASS
9661 10241 : && !gfc_build_class_symbol (&sym->ts, &sym->attr, &sym->as))
9662 : {
9663 0 : m = MATCH_ERROR;
9664 0 : goto cleanup;
9665 : }
9666 :
9667 10377 : add_hidden_procptr_result (sym);
9668 :
9669 10377 : return MATCH_YES;
9670 :
9671 50 : cleanup:
9672 50 : gfc_free_array_spec (as);
9673 50 : return m;
9674 : }
9675 :
9676 :
9677 : /* Generic attribute declaration subroutine. Used for attributes that
9678 : just have a list of names. */
9679 :
9680 : static match
9681 6712 : attr_decl (void)
9682 : {
9683 6712 : match m;
9684 :
9685 : /* Gobble the optional double colon, by simply ignoring the result
9686 : of gfc_match(). */
9687 6712 : gfc_match (" ::");
9688 :
9689 10427 : for (;;)
9690 : {
9691 10427 : m = attr_decl1 ();
9692 10427 : if (m != MATCH_YES)
9693 : break;
9694 :
9695 10377 : if (gfc_match_eos () == MATCH_YES)
9696 : {
9697 : m = MATCH_YES;
9698 : break;
9699 : }
9700 :
9701 3715 : if (gfc_match_char (',') != MATCH_YES)
9702 : {
9703 0 : gfc_error ("Unexpected character in variable list at %C");
9704 0 : m = MATCH_ERROR;
9705 0 : break;
9706 : }
9707 : }
9708 :
9709 6712 : return m;
9710 : }
9711 :
9712 :
9713 : /* This routine matches Cray Pointer declarations of the form:
9714 : pointer ( <pointer>, <pointee> )
9715 : or
9716 : pointer ( <pointer1>, <pointee1> ), ( <pointer2>, <pointee2> ), ...
9717 : The pointer, if already declared, should be an integer. Otherwise, we
9718 : set it as BT_INTEGER with kind gfc_index_integer_kind. The pointee may
9719 : be either a scalar, or an array declaration. No space is allocated for
9720 : the pointee. For the statement
9721 : pointer (ipt, ar(10))
9722 : any subsequent uses of ar will be translated (in C-notation) as
9723 : ar(i) => ((<type> *) ipt)(i)
9724 : After gimplification, pointee variable will disappear in the code. */
9725 :
9726 : static match
9727 334 : cray_pointer_decl (void)
9728 : {
9729 334 : match m;
9730 334 : gfc_array_spec *as = NULL;
9731 334 : gfc_symbol *cptr; /* Pointer symbol. */
9732 334 : gfc_symbol *cpte; /* Pointee symbol. */
9733 334 : locus var_locus;
9734 334 : bool done = false;
9735 :
9736 334 : while (!done)
9737 : {
9738 347 : if (gfc_match_char ('(') != MATCH_YES)
9739 : {
9740 1 : gfc_error ("Expected %<(%> at %C");
9741 1 : return MATCH_ERROR;
9742 : }
9743 :
9744 : /* Match pointer. */
9745 346 : var_locus = gfc_current_locus;
9746 346 : gfc_clear_attr (¤t_attr);
9747 346 : gfc_add_cray_pointer (¤t_attr, &var_locus);
9748 346 : current_ts.type = BT_INTEGER;
9749 346 : current_ts.kind = gfc_index_integer_kind;
9750 :
9751 346 : m = gfc_match_symbol (&cptr, 0);
9752 346 : if (m != MATCH_YES)
9753 : {
9754 2 : gfc_error ("Expected variable name at %C");
9755 2 : return m;
9756 : }
9757 :
9758 344 : if (!gfc_add_cray_pointer (&cptr->attr, &var_locus))
9759 : return MATCH_ERROR;
9760 :
9761 341 : gfc_set_sym_referenced (cptr);
9762 :
9763 341 : if (cptr->ts.type == BT_UNKNOWN) /* Override the type, if necessary. */
9764 : {
9765 327 : cptr->ts.type = BT_INTEGER;
9766 327 : cptr->ts.kind = gfc_index_integer_kind;
9767 : }
9768 14 : else if (cptr->ts.type != BT_INTEGER)
9769 : {
9770 1 : gfc_error ("Cray pointer at %C must be an integer");
9771 1 : return MATCH_ERROR;
9772 : }
9773 13 : else if (cptr->ts.kind < gfc_index_integer_kind)
9774 0 : gfc_warning (0, "Cray pointer at %C has %d bytes of precision;"
9775 : " memory addresses require %d bytes",
9776 : cptr->ts.kind, gfc_index_integer_kind);
9777 :
9778 340 : if (gfc_match_char (',') != MATCH_YES)
9779 : {
9780 2 : gfc_error ("Expected \",\" at %C");
9781 2 : return MATCH_ERROR;
9782 : }
9783 :
9784 : /* Match Pointee. */
9785 338 : var_locus = gfc_current_locus;
9786 338 : gfc_clear_attr (¤t_attr);
9787 338 : gfc_add_cray_pointee (¤t_attr, &var_locus);
9788 338 : current_ts.type = BT_UNKNOWN;
9789 338 : current_ts.kind = 0;
9790 :
9791 338 : m = gfc_match_symbol (&cpte, 0);
9792 338 : if (m != MATCH_YES)
9793 : {
9794 2 : gfc_error ("Expected variable name at %C");
9795 2 : return m;
9796 : }
9797 :
9798 : /* Check for an optional array spec. */
9799 336 : m = gfc_match_array_spec (&as, true, false);
9800 336 : if (m == MATCH_ERROR)
9801 : {
9802 0 : gfc_free_array_spec (as);
9803 0 : return m;
9804 : }
9805 336 : else if (m == MATCH_NO)
9806 : {
9807 226 : gfc_free_array_spec (as);
9808 226 : as = NULL;
9809 : }
9810 :
9811 336 : if (!gfc_add_cray_pointee (&cpte->attr, &var_locus))
9812 : return MATCH_ERROR;
9813 :
9814 329 : gfc_set_sym_referenced (cpte);
9815 :
9816 329 : if (cpte->as == NULL)
9817 : {
9818 247 : if (!gfc_set_array_spec (cpte, as, &var_locus))
9819 0 : gfc_internal_error ("Cannot set Cray pointee array spec.");
9820 : }
9821 82 : else if (as != NULL)
9822 : {
9823 1 : gfc_error ("Duplicate array spec for Cray pointee at %C");
9824 1 : gfc_free_array_spec (as);
9825 1 : return MATCH_ERROR;
9826 : }
9827 :
9828 328 : as = NULL;
9829 :
9830 328 : if (cpte->as != NULL)
9831 : {
9832 : /* Fix array spec. */
9833 190 : m = gfc_mod_pointee_as (cpte->as);
9834 190 : if (m == MATCH_ERROR)
9835 : return m;
9836 : }
9837 :
9838 : /* Point the Pointee at the Pointer. */
9839 328 : cpte->cp_pointer = cptr;
9840 :
9841 328 : if (gfc_match_char (')') != MATCH_YES)
9842 : {
9843 2 : gfc_error ("Expected \")\" at %C");
9844 2 : return MATCH_ERROR;
9845 : }
9846 326 : m = gfc_match_char (',');
9847 326 : if (m != MATCH_YES)
9848 : done = true; /* Stop searching for more declarations. */
9849 :
9850 : }
9851 :
9852 313 : if (m == MATCH_ERROR /* Failed when trying to find ',' above. */
9853 313 : || gfc_match_eos () != MATCH_YES)
9854 : {
9855 0 : gfc_error ("Expected %<,%> or end of statement at %C");
9856 0 : return MATCH_ERROR;
9857 : }
9858 : return MATCH_YES;
9859 : }
9860 :
9861 :
9862 : match
9863 3215 : gfc_match_external (void)
9864 : {
9865 :
9866 3215 : gfc_clear_attr (¤t_attr);
9867 3215 : current_attr.external = 1;
9868 :
9869 3215 : return attr_decl ();
9870 : }
9871 :
9872 :
9873 : match
9874 208 : gfc_match_intent (void)
9875 : {
9876 208 : sym_intent intent;
9877 :
9878 : /* This is not allowed within a BLOCK construct! */
9879 208 : if (gfc_current_state () == COMP_BLOCK)
9880 : {
9881 2 : gfc_error ("INTENT is not allowed inside of BLOCK at %C");
9882 2 : return MATCH_ERROR;
9883 : }
9884 :
9885 206 : intent = match_intent_spec ();
9886 206 : if (intent == INTENT_UNKNOWN)
9887 : return MATCH_ERROR;
9888 :
9889 206 : gfc_clear_attr (¤t_attr);
9890 206 : current_attr.intent = intent;
9891 :
9892 206 : return attr_decl ();
9893 : }
9894 :
9895 :
9896 : match
9897 1482 : gfc_match_intrinsic (void)
9898 : {
9899 :
9900 1482 : gfc_clear_attr (¤t_attr);
9901 1482 : current_attr.intrinsic = 1;
9902 :
9903 1482 : return attr_decl ();
9904 : }
9905 :
9906 :
9907 : match
9908 220 : gfc_match_optional (void)
9909 : {
9910 : /* This is not allowed within a BLOCK construct! */
9911 220 : if (gfc_current_state () == COMP_BLOCK)
9912 : {
9913 2 : gfc_error ("OPTIONAL is not allowed inside of BLOCK at %C");
9914 2 : return MATCH_ERROR;
9915 : }
9916 :
9917 218 : gfc_clear_attr (¤t_attr);
9918 218 : current_attr.optional = 1;
9919 :
9920 218 : return attr_decl ();
9921 : }
9922 :
9923 :
9924 : match
9925 915 : gfc_match_pointer (void)
9926 : {
9927 915 : gfc_gobble_whitespace ();
9928 915 : if (gfc_peek_ascii_char () == '(')
9929 : {
9930 335 : if (!flag_cray_pointer)
9931 : {
9932 1 : gfc_error ("Cray pointer declaration at %C requires "
9933 : "%<-fcray-pointer%> flag");
9934 1 : return MATCH_ERROR;
9935 : }
9936 334 : return cray_pointer_decl ();
9937 : }
9938 : else
9939 : {
9940 580 : gfc_clear_attr (¤t_attr);
9941 580 : current_attr.pointer = 1;
9942 :
9943 580 : return attr_decl ();
9944 : }
9945 : }
9946 :
9947 :
9948 : match
9949 162 : gfc_match_allocatable (void)
9950 : {
9951 162 : gfc_clear_attr (¤t_attr);
9952 162 : current_attr.allocatable = 1;
9953 :
9954 162 : return attr_decl ();
9955 : }
9956 :
9957 :
9958 : match
9959 23 : gfc_match_codimension (void)
9960 : {
9961 23 : gfc_clear_attr (¤t_attr);
9962 23 : current_attr.codimension = 1;
9963 :
9964 23 : return attr_decl ();
9965 : }
9966 :
9967 :
9968 : match
9969 80 : gfc_match_contiguous (void)
9970 : {
9971 80 : if (!gfc_notify_std (GFC_STD_F2008, "CONTIGUOUS statement at %C"))
9972 : return MATCH_ERROR;
9973 :
9974 79 : gfc_clear_attr (¤t_attr);
9975 79 : current_attr.contiguous = 1;
9976 :
9977 79 : return attr_decl ();
9978 : }
9979 :
9980 :
9981 : match
9982 648 : gfc_match_dimension (void)
9983 : {
9984 648 : gfc_clear_attr (¤t_attr);
9985 648 : current_attr.dimension = 1;
9986 :
9987 648 : return attr_decl ();
9988 : }
9989 :
9990 :
9991 : match
9992 99 : gfc_match_target (void)
9993 : {
9994 99 : gfc_clear_attr (¤t_attr);
9995 99 : current_attr.target = 1;
9996 :
9997 99 : return attr_decl ();
9998 : }
9999 :
10000 :
10001 : /* Match the list of entities being specified in a PUBLIC or PRIVATE
10002 : statement. */
10003 :
10004 : static match
10005 1766 : access_attr_decl (gfc_statement st)
10006 : {
10007 1766 : char name[GFC_MAX_SYMBOL_LEN + 1];
10008 1766 : interface_type type;
10009 1766 : gfc_user_op *uop;
10010 1766 : gfc_symbol *sym, *dt_sym;
10011 1766 : gfc_intrinsic_op op;
10012 1766 : match m;
10013 1766 : gfc_access access = (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE;
10014 :
10015 1766 : if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
10016 0 : goto done;
10017 :
10018 2916 : for (;;)
10019 : {
10020 2916 : m = gfc_match_generic_spec (&type, name, &op);
10021 2916 : if (m == MATCH_NO)
10022 0 : goto syntax;
10023 2916 : if (m == MATCH_ERROR)
10024 0 : goto done;
10025 :
10026 2916 : switch (type)
10027 : {
10028 0 : case INTERFACE_NAMELESS:
10029 0 : case INTERFACE_ABSTRACT:
10030 0 : goto syntax;
10031 :
10032 2839 : case INTERFACE_GENERIC:
10033 2839 : case INTERFACE_DTIO:
10034 :
10035 2839 : if (gfc_get_symbol (name, NULL, &sym))
10036 0 : goto done;
10037 :
10038 2839 : if (type == INTERFACE_DTIO
10039 26 : && gfc_current_ns->proc_name
10040 26 : && gfc_current_ns->proc_name->attr.flavor == FL_MODULE
10041 26 : && sym->attr.flavor == FL_UNKNOWN)
10042 2 : sym->attr.flavor = FL_PROCEDURE;
10043 :
10044 2839 : if (!gfc_add_access (&sym->attr, access, sym->name, NULL))
10045 4 : goto done;
10046 :
10047 330 : if (sym->attr.generic && (dt_sym = gfc_find_dt_in_generic (sym))
10048 2892 : && !gfc_add_access (&dt_sym->attr, access, sym->name, NULL))
10049 0 : goto done;
10050 :
10051 : break;
10052 :
10053 72 : case INTERFACE_INTRINSIC_OP:
10054 72 : if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN)
10055 : {
10056 72 : gfc_intrinsic_op other_op;
10057 :
10058 72 : gfc_current_ns->operator_access[op] = access;
10059 :
10060 : /* Handle the case if there is another op with the same
10061 : function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on. */
10062 72 : other_op = gfc_equivalent_op (op);
10063 :
10064 72 : if (other_op != INTRINSIC_NONE)
10065 21 : gfc_current_ns->operator_access[other_op] = access;
10066 : }
10067 : else
10068 : {
10069 0 : gfc_error ("Access specification of the %s operator at %C has "
10070 : "already been specified", gfc_op2string (op));
10071 0 : goto done;
10072 : }
10073 :
10074 : break;
10075 :
10076 5 : case INTERFACE_USER_OP:
10077 5 : uop = gfc_get_uop (name);
10078 :
10079 5 : if (uop->access == ACCESS_UNKNOWN)
10080 : {
10081 4 : uop->access = access;
10082 : }
10083 : else
10084 : {
10085 1 : gfc_error ("Access specification of the .%s. operator at %C "
10086 : "has already been specified", uop->name);
10087 1 : goto done;
10088 : }
10089 :
10090 4 : break;
10091 : }
10092 :
10093 2911 : if (gfc_match_char (',') == MATCH_NO)
10094 : break;
10095 : }
10096 :
10097 1761 : if (gfc_match_eos () != MATCH_YES)
10098 0 : goto syntax;
10099 : return MATCH_YES;
10100 :
10101 0 : syntax:
10102 0 : gfc_syntax_error (st);
10103 :
10104 1766 : done:
10105 : return MATCH_ERROR;
10106 : }
10107 :
10108 :
10109 : match
10110 23 : gfc_match_protected (void)
10111 : {
10112 23 : gfc_symbol *sym;
10113 23 : match m;
10114 23 : char c;
10115 :
10116 : /* PROTECTED has already been seen, but must be followed by whitespace
10117 : or ::. */
10118 23 : c = gfc_peek_ascii_char ();
10119 23 : if (!gfc_is_whitespace (c) && c != ':')
10120 : return MATCH_NO;
10121 :
10122 22 : if (!gfc_current_ns->proc_name
10123 20 : || gfc_current_ns->proc_name->attr.flavor != FL_MODULE)
10124 : {
10125 3 : gfc_error ("PROTECTED at %C only allowed in specification "
10126 : "part of a module");
10127 3 : return MATCH_ERROR;
10128 :
10129 : }
10130 :
10131 19 : gfc_match (" ::");
10132 :
10133 19 : if (!gfc_notify_std (GFC_STD_F2003, "PROTECTED statement at %C"))
10134 : return MATCH_ERROR;
10135 :
10136 : /* PROTECTED has an entity-list. */
10137 18 : if (gfc_match_eos () == MATCH_YES)
10138 0 : goto syntax;
10139 :
10140 26 : for(;;)
10141 : {
10142 26 : m = gfc_match_symbol (&sym, 0);
10143 26 : switch (m)
10144 : {
10145 26 : case MATCH_YES:
10146 26 : if (!gfc_add_protected (&sym->attr, sym->name, &gfc_current_locus))
10147 : return MATCH_ERROR;
10148 25 : goto next_item;
10149 :
10150 : case MATCH_NO:
10151 : break;
10152 :
10153 : case MATCH_ERROR:
10154 : return MATCH_ERROR;
10155 : }
10156 :
10157 25 : next_item:
10158 25 : if (gfc_match_eos () == MATCH_YES)
10159 : break;
10160 8 : if (gfc_match_char (',') != MATCH_YES)
10161 0 : goto syntax;
10162 : }
10163 :
10164 : return MATCH_YES;
10165 :
10166 0 : syntax:
10167 0 : gfc_error ("Syntax error in PROTECTED statement at %C");
10168 0 : return MATCH_ERROR;
10169 : }
10170 :
10171 :
10172 : /* The PRIVATE statement is a bit weird in that it can be an attribute
10173 : declaration, but also works as a standalone statement inside of a
10174 : type declaration or a module. */
10175 :
10176 : match
10177 29356 : gfc_match_private (gfc_statement *st)
10178 : {
10179 29356 : gfc_state_data *prev;
10180 :
10181 29356 : if (gfc_match ("private") != MATCH_YES)
10182 : return MATCH_NO;
10183 :
10184 : /* Try matching PRIVATE without an access-list. */
10185 1635 : if (gfc_match_eos () == MATCH_YES)
10186 : {
10187 1348 : prev = gfc_state_stack->previous;
10188 1348 : if (gfc_current_state () != COMP_MODULE
10189 367 : && !(gfc_current_state () == COMP_DERIVED
10190 334 : && prev && prev->state == COMP_MODULE)
10191 34 : && !(gfc_current_state () == COMP_DERIVED_CONTAINS
10192 32 : && prev->previous && prev->previous->state == COMP_MODULE))
10193 : {
10194 2 : gfc_error ("PRIVATE statement at %C is only allowed in the "
10195 : "specification part of a module");
10196 2 : return MATCH_ERROR;
10197 : }
10198 :
10199 1346 : *st = ST_PRIVATE;
10200 1346 : return MATCH_YES;
10201 : }
10202 :
10203 : /* At this point in free-form source code, PRIVATE must be followed
10204 : by whitespace or ::. */
10205 287 : if (gfc_current_form == FORM_FREE)
10206 : {
10207 285 : char c = gfc_peek_ascii_char ();
10208 285 : if (!gfc_is_whitespace (c) && c != ':')
10209 : return MATCH_NO;
10210 : }
10211 :
10212 286 : prev = gfc_state_stack->previous;
10213 286 : if (gfc_current_state () != COMP_MODULE
10214 1 : && !(gfc_current_state () == COMP_DERIVED
10215 0 : && prev && prev->state == COMP_MODULE)
10216 1 : && !(gfc_current_state () == COMP_DERIVED_CONTAINS
10217 0 : && prev->previous && prev->previous->state == COMP_MODULE))
10218 : {
10219 1 : gfc_error ("PRIVATE statement at %C is only allowed in the "
10220 : "specification part of a module");
10221 1 : return MATCH_ERROR;
10222 : }
10223 :
10224 285 : *st = ST_ATTR_DECL;
10225 285 : return access_attr_decl (ST_PRIVATE);
10226 : }
10227 :
10228 :
10229 : match
10230 1880 : gfc_match_public (gfc_statement *st)
10231 : {
10232 1880 : if (gfc_match ("public") != MATCH_YES)
10233 : return MATCH_NO;
10234 :
10235 : /* Try matching PUBLIC without an access-list. */
10236 1528 : if (gfc_match_eos () == MATCH_YES)
10237 : {
10238 45 : if (gfc_current_state () != COMP_MODULE)
10239 : {
10240 2 : gfc_error ("PUBLIC statement at %C is only allowed in the "
10241 : "specification part of a module");
10242 2 : return MATCH_ERROR;
10243 : }
10244 :
10245 43 : *st = ST_PUBLIC;
10246 43 : return MATCH_YES;
10247 : }
10248 :
10249 : /* At this point in free-form source code, PUBLIC must be followed
10250 : by whitespace or ::. */
10251 1483 : if (gfc_current_form == FORM_FREE)
10252 : {
10253 1481 : char c = gfc_peek_ascii_char ();
10254 1481 : if (!gfc_is_whitespace (c) && c != ':')
10255 : return MATCH_NO;
10256 : }
10257 :
10258 1482 : if (gfc_current_state () != COMP_MODULE)
10259 : {
10260 1 : gfc_error ("PUBLIC statement at %C is only allowed in the "
10261 : "specification part of a module");
10262 1 : return MATCH_ERROR;
10263 : }
10264 :
10265 1481 : *st = ST_ATTR_DECL;
10266 1481 : return access_attr_decl (ST_PUBLIC);
10267 : }
10268 :
10269 :
10270 : /* Workhorse for gfc_match_parameter. */
10271 :
10272 : static match
10273 8533 : do_parm (void)
10274 : {
10275 8533 : gfc_symbol *sym;
10276 8533 : gfc_expr *init;
10277 8533 : gfc_charlen *saved_cl_list;
10278 8533 : match m;
10279 8533 : bool t;
10280 :
10281 8533 : saved_cl_list = gfc_current_ns->cl_list;
10282 :
10283 8533 : m = gfc_match_symbol (&sym, 0);
10284 8533 : if (m == MATCH_NO)
10285 0 : gfc_error ("Expected variable name at %C in PARAMETER statement");
10286 :
10287 8533 : if (m != MATCH_YES)
10288 : return m;
10289 :
10290 8533 : if (gfc_match_char ('=') == MATCH_NO)
10291 : {
10292 0 : gfc_error ("Expected = sign in PARAMETER statement at %C");
10293 0 : return MATCH_ERROR;
10294 : }
10295 :
10296 8533 : m = gfc_match_init_expr (&init);
10297 8533 : if (m == MATCH_NO)
10298 0 : gfc_error ("Expected expression at %C in PARAMETER statement");
10299 8533 : if (m != MATCH_YES)
10300 : return m;
10301 :
10302 8532 : if (sym->ts.type == BT_UNKNOWN
10303 8532 : && !gfc_set_default_type (sym, 1, NULL))
10304 : {
10305 1 : m = MATCH_ERROR;
10306 1 : goto cleanup;
10307 : }
10308 :
10309 8531 : if (!gfc_check_assign_symbol (sym, NULL, init)
10310 8531 : || !gfc_add_flavor (&sym->attr, FL_PARAMETER, sym->name, NULL))
10311 : {
10312 1 : m = MATCH_ERROR;
10313 1 : goto cleanup;
10314 : }
10315 :
10316 8530 : if (sym->value)
10317 : {
10318 1 : gfc_error ("Initializing already initialized variable at %C");
10319 1 : m = MATCH_ERROR;
10320 1 : goto cleanup;
10321 : }
10322 :
10323 8529 : t = add_init_expr_to_sym (sym->name, &init, &gfc_current_locus,
10324 : saved_cl_list);
10325 8529 : return (t) ? MATCH_YES : MATCH_ERROR;
10326 :
10327 3 : cleanup:
10328 3 : gfc_free_expr (init);
10329 3 : return m;
10330 : }
10331 :
10332 :
10333 : /* Match a parameter statement, with the weird syntax that these have. */
10334 :
10335 : match
10336 7820 : gfc_match_parameter (void)
10337 : {
10338 7820 : const char *term = " )%t";
10339 7820 : match m;
10340 :
10341 7820 : if (gfc_match_char ('(') == MATCH_NO)
10342 : {
10343 : /* With legacy PARAMETER statements, don't expect a terminating ')'. */
10344 28 : if (!gfc_notify_std (GFC_STD_LEGACY, "PARAMETER without '()' at %C"))
10345 : return MATCH_NO;
10346 7819 : term = " %t";
10347 : }
10348 :
10349 8533 : for (;;)
10350 : {
10351 8533 : m = do_parm ();
10352 8533 : if (m != MATCH_YES)
10353 : break;
10354 :
10355 8529 : if (gfc_match (term) == MATCH_YES)
10356 : break;
10357 :
10358 714 : if (gfc_match_char (',') != MATCH_YES)
10359 : {
10360 0 : gfc_error ("Unexpected characters in PARAMETER statement at %C");
10361 0 : m = MATCH_ERROR;
10362 0 : break;
10363 : }
10364 : }
10365 :
10366 : return m;
10367 : }
10368 :
10369 :
10370 : match
10371 8 : gfc_match_automatic (void)
10372 : {
10373 8 : gfc_symbol *sym;
10374 8 : match m;
10375 8 : bool seen_symbol = false;
10376 :
10377 8 : if (!flag_dec_static)
10378 : {
10379 2 : gfc_error ("%s at %C is a DEC extension, enable with "
10380 : "%<-fdec-static%>",
10381 : "AUTOMATIC"
10382 : );
10383 2 : return MATCH_ERROR;
10384 : }
10385 :
10386 6 : gfc_match (" ::");
10387 :
10388 6 : for (;;)
10389 : {
10390 6 : m = gfc_match_symbol (&sym, 0);
10391 6 : switch (m)
10392 : {
10393 : case MATCH_NO:
10394 : break;
10395 :
10396 : case MATCH_ERROR:
10397 : return MATCH_ERROR;
10398 :
10399 4 : case MATCH_YES:
10400 4 : if (!gfc_add_automatic (&sym->attr, sym->name, &gfc_current_locus))
10401 : return MATCH_ERROR;
10402 : seen_symbol = true;
10403 : break;
10404 : }
10405 :
10406 4 : if (gfc_match_eos () == MATCH_YES)
10407 : break;
10408 0 : if (gfc_match_char (',') != MATCH_YES)
10409 0 : goto syntax;
10410 : }
10411 :
10412 4 : if (!seen_symbol)
10413 : {
10414 2 : gfc_error ("Expected entity-list in AUTOMATIC statement at %C");
10415 2 : return MATCH_ERROR;
10416 : }
10417 :
10418 : return MATCH_YES;
10419 :
10420 0 : syntax:
10421 0 : gfc_error ("Syntax error in AUTOMATIC statement at %C");
10422 0 : return MATCH_ERROR;
10423 : }
10424 :
10425 :
10426 : match
10427 7 : gfc_match_static (void)
10428 : {
10429 7 : gfc_symbol *sym;
10430 7 : match m;
10431 7 : bool seen_symbol = false;
10432 :
10433 7 : if (!flag_dec_static)
10434 : {
10435 2 : gfc_error ("%s at %C is a DEC extension, enable with "
10436 : "%<-fdec-static%>",
10437 : "STATIC");
10438 2 : return MATCH_ERROR;
10439 : }
10440 :
10441 5 : gfc_match (" ::");
10442 :
10443 5 : for (;;)
10444 : {
10445 5 : m = gfc_match_symbol (&sym, 0);
10446 5 : switch (m)
10447 : {
10448 : case MATCH_NO:
10449 : break;
10450 :
10451 : case MATCH_ERROR:
10452 : return MATCH_ERROR;
10453 :
10454 3 : case MATCH_YES:
10455 3 : if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name,
10456 : &gfc_current_locus))
10457 : return MATCH_ERROR;
10458 : seen_symbol = true;
10459 : break;
10460 : }
10461 :
10462 3 : if (gfc_match_eos () == MATCH_YES)
10463 : break;
10464 0 : if (gfc_match_char (',') != MATCH_YES)
10465 0 : goto syntax;
10466 : }
10467 :
10468 3 : if (!seen_symbol)
10469 : {
10470 2 : gfc_error ("Expected entity-list in STATIC statement at %C");
10471 2 : return MATCH_ERROR;
10472 : }
10473 :
10474 : return MATCH_YES;
10475 :
10476 0 : syntax:
10477 0 : gfc_error ("Syntax error in STATIC statement at %C");
10478 0 : return MATCH_ERROR;
10479 : }
10480 :
10481 :
10482 : /* Save statements have a special syntax. */
10483 :
10484 : match
10485 272 : gfc_match_save (void)
10486 : {
10487 272 : char n[GFC_MAX_SYMBOL_LEN+1];
10488 272 : gfc_common_head *c;
10489 272 : gfc_symbol *sym;
10490 272 : match m;
10491 :
10492 272 : if (gfc_match_eos () == MATCH_YES)
10493 : {
10494 150 : if (gfc_current_ns->seen_save)
10495 : {
10496 7 : if (!gfc_notify_std (GFC_STD_LEGACY, "Blanket SAVE statement at %C "
10497 : "follows previous SAVE statement"))
10498 : return MATCH_ERROR;
10499 : }
10500 :
10501 149 : gfc_current_ns->save_all = gfc_current_ns->seen_save = 1;
10502 149 : return MATCH_YES;
10503 : }
10504 :
10505 122 : if (gfc_current_ns->save_all)
10506 : {
10507 7 : if (!gfc_notify_std (GFC_STD_LEGACY, "SAVE statement at %C follows "
10508 : "blanket SAVE statement"))
10509 : return MATCH_ERROR;
10510 : }
10511 :
10512 121 : gfc_match (" ::");
10513 :
10514 183 : for (;;)
10515 : {
10516 183 : m = gfc_match_symbol (&sym, 0);
10517 183 : switch (m)
10518 : {
10519 181 : case MATCH_YES:
10520 181 : if (!gfc_add_save (&sym->attr, SAVE_EXPLICIT, sym->name,
10521 : &gfc_current_locus))
10522 : return MATCH_ERROR;
10523 179 : goto next_item;
10524 :
10525 : case MATCH_NO:
10526 : break;
10527 :
10528 : case MATCH_ERROR:
10529 : return MATCH_ERROR;
10530 : }
10531 :
10532 2 : m = gfc_match (" / %n /", &n);
10533 2 : if (m == MATCH_ERROR)
10534 : return MATCH_ERROR;
10535 2 : if (m == MATCH_NO)
10536 0 : goto syntax;
10537 :
10538 : /* F2023:C1108: A SAVE statement in a BLOCK construct shall contain a
10539 : saved-entity-list that does not specify a common-block-name. */
10540 2 : if (gfc_current_state () == COMP_BLOCK)
10541 : {
10542 1 : gfc_error ("SAVE of COMMON block %qs at %C is not allowed "
10543 : "in a BLOCK construct", n);
10544 1 : return MATCH_ERROR;
10545 : }
10546 :
10547 1 : c = gfc_get_common (n, 0);
10548 1 : c->saved = 1;
10549 :
10550 1 : gfc_current_ns->seen_save = 1;
10551 :
10552 180 : next_item:
10553 180 : if (gfc_match_eos () == MATCH_YES)
10554 : break;
10555 62 : if (gfc_match_char (',') != MATCH_YES)
10556 0 : goto syntax;
10557 : }
10558 :
10559 : return MATCH_YES;
10560 :
10561 0 : syntax:
10562 0 : if (gfc_current_ns->seen_save)
10563 : {
10564 0 : gfc_error ("Syntax error in SAVE statement at %C");
10565 0 : return MATCH_ERROR;
10566 : }
10567 : else
10568 : return MATCH_NO;
10569 : }
10570 :
10571 :
10572 : match
10573 93 : gfc_match_value (void)
10574 : {
10575 93 : gfc_symbol *sym;
10576 93 : match m;
10577 :
10578 : /* This is not allowed within a BLOCK construct! */
10579 93 : if (gfc_current_state () == COMP_BLOCK)
10580 : {
10581 2 : gfc_error ("VALUE is not allowed inside of BLOCK at %C");
10582 2 : return MATCH_ERROR;
10583 : }
10584 :
10585 91 : if (!gfc_notify_std (GFC_STD_F2003, "VALUE statement at %C"))
10586 : return MATCH_ERROR;
10587 :
10588 90 : if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
10589 : {
10590 : return MATCH_ERROR;
10591 : }
10592 :
10593 90 : if (gfc_match_eos () == MATCH_YES)
10594 0 : goto syntax;
10595 :
10596 116 : for(;;)
10597 : {
10598 116 : m = gfc_match_symbol (&sym, 0);
10599 116 : switch (m)
10600 : {
10601 116 : case MATCH_YES:
10602 116 : if (!gfc_add_value (&sym->attr, sym->name, &gfc_current_locus))
10603 : return MATCH_ERROR;
10604 109 : goto next_item;
10605 :
10606 : case MATCH_NO:
10607 : break;
10608 :
10609 : case MATCH_ERROR:
10610 : return MATCH_ERROR;
10611 : }
10612 :
10613 109 : next_item:
10614 109 : if (gfc_match_eos () == MATCH_YES)
10615 : break;
10616 26 : if (gfc_match_char (',') != MATCH_YES)
10617 0 : goto syntax;
10618 : }
10619 :
10620 : return MATCH_YES;
10621 :
10622 0 : syntax:
10623 0 : gfc_error ("Syntax error in VALUE statement at %C");
10624 0 : return MATCH_ERROR;
10625 : }
10626 :
10627 :
10628 : match
10629 45 : gfc_match_volatile (void)
10630 : {
10631 45 : gfc_symbol *sym;
10632 45 : char *name;
10633 45 : match m;
10634 :
10635 45 : if (!gfc_notify_std (GFC_STD_F2003, "VOLATILE statement at %C"))
10636 : return MATCH_ERROR;
10637 :
10638 44 : if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
10639 : {
10640 : return MATCH_ERROR;
10641 : }
10642 :
10643 44 : if (gfc_match_eos () == MATCH_YES)
10644 1 : goto syntax;
10645 :
10646 48 : for(;;)
10647 : {
10648 : /* VOLATILE is special because it can be added to host-associated
10649 : symbols locally. Except for coarrays. */
10650 48 : m = gfc_match_symbol (&sym, 1);
10651 48 : switch (m)
10652 : {
10653 48 : case MATCH_YES:
10654 48 : name = XALLOCAVAR (char, strlen (sym->name) + 1);
10655 48 : strcpy (name, sym->name);
10656 48 : if (!check_function_name (name))
10657 : return MATCH_ERROR;
10658 : /* F2008, C560+C561. VOLATILE for host-/use-associated variable or
10659 : for variable in a BLOCK which is defined outside of the BLOCK. */
10660 47 : if (sym->ns != gfc_current_ns && sym->attr.codimension)
10661 : {
10662 2 : gfc_error ("Specifying VOLATILE for coarray variable %qs at "
10663 : "%C, which is use-/host-associated", sym->name);
10664 2 : return MATCH_ERROR;
10665 : }
10666 45 : if (!gfc_add_volatile (&sym->attr, sym->name, &gfc_current_locus))
10667 : return MATCH_ERROR;
10668 42 : goto next_item;
10669 :
10670 : case MATCH_NO:
10671 : break;
10672 :
10673 : case MATCH_ERROR:
10674 : return MATCH_ERROR;
10675 : }
10676 :
10677 42 : next_item:
10678 42 : if (gfc_match_eos () == MATCH_YES)
10679 : break;
10680 5 : if (gfc_match_char (',') != MATCH_YES)
10681 0 : goto syntax;
10682 : }
10683 :
10684 : return MATCH_YES;
10685 :
10686 1 : syntax:
10687 1 : gfc_error ("Syntax error in VOLATILE statement at %C");
10688 1 : return MATCH_ERROR;
10689 : }
10690 :
10691 :
10692 : match
10693 11 : gfc_match_asynchronous (void)
10694 : {
10695 11 : gfc_symbol *sym;
10696 11 : char *name;
10697 11 : match m;
10698 :
10699 11 : if (!gfc_notify_std (GFC_STD_F2003, "ASYNCHRONOUS statement at %C"))
10700 : return MATCH_ERROR;
10701 :
10702 10 : if (gfc_match (" ::") == MATCH_NO && gfc_match_space () == MATCH_NO)
10703 : {
10704 : return MATCH_ERROR;
10705 : }
10706 :
10707 10 : if (gfc_match_eos () == MATCH_YES)
10708 0 : goto syntax;
10709 :
10710 10 : for(;;)
10711 : {
10712 : /* ASYNCHRONOUS is special because it can be added to host-associated
10713 : symbols locally. */
10714 10 : m = gfc_match_symbol (&sym, 1);
10715 10 : switch (m)
10716 : {
10717 10 : case MATCH_YES:
10718 10 : name = XALLOCAVAR (char, strlen (sym->name) + 1);
10719 10 : strcpy (name, sym->name);
10720 10 : if (!check_function_name (name))
10721 : return MATCH_ERROR;
10722 9 : if (!gfc_add_asynchronous (&sym->attr, sym->name, &gfc_current_locus))
10723 : return MATCH_ERROR;
10724 7 : goto next_item;
10725 :
10726 : case MATCH_NO:
10727 : break;
10728 :
10729 : case MATCH_ERROR:
10730 : return MATCH_ERROR;
10731 : }
10732 :
10733 7 : next_item:
10734 7 : if (gfc_match_eos () == MATCH_YES)
10735 : break;
10736 0 : if (gfc_match_char (',') != MATCH_YES)
10737 0 : goto syntax;
10738 : }
10739 :
10740 : return MATCH_YES;
10741 :
10742 0 : syntax:
10743 0 : gfc_error ("Syntax error in ASYNCHRONOUS statement at %C");
10744 0 : return MATCH_ERROR;
10745 : }
10746 :
10747 :
10748 : /* Match a module procedure statement in a submodule. */
10749 :
10750 : match
10751 770551 : gfc_match_submod_proc (void)
10752 : {
10753 770551 : char name[GFC_MAX_SYMBOL_LEN + 1];
10754 770551 : gfc_symbol *sym, *fsym;
10755 770551 : match m;
10756 770551 : gfc_formal_arglist *formal, *head, *tail;
10757 :
10758 770551 : if (gfc_current_state () != COMP_CONTAINS
10759 15771 : || !(gfc_state_stack->previous
10760 15771 : && (gfc_state_stack->previous->state == COMP_SUBMODULE
10761 15771 : || gfc_state_stack->previous->state == COMP_MODULE)))
10762 : return MATCH_NO;
10763 :
10764 7870 : m = gfc_match (" module% procedure% %n", name);
10765 7870 : if (m != MATCH_YES)
10766 : return m;
10767 :
10768 267 : if (!gfc_notify_std (GFC_STD_F2008, "MODULE PROCEDURE declaration "
10769 : "at %C"))
10770 : return MATCH_ERROR;
10771 :
10772 267 : if (get_proc_name (name, &sym, false))
10773 : return MATCH_ERROR;
10774 :
10775 : /* Make sure that the result field is appropriately filled. */
10776 267 : if (sym->tlink && sym->tlink->attr.function)
10777 : {
10778 117 : if (sym->tlink->result && sym->tlink->result != sym->tlink)
10779 : {
10780 67 : sym->result = sym->tlink->result;
10781 67 : if (!sym->result->attr.use_assoc)
10782 : {
10783 20 : gfc_symtree *st = gfc_new_symtree (&gfc_current_ns->sym_root,
10784 : sym->result->name);
10785 20 : st->n.sym = sym->result;
10786 20 : sym->result->refs++;
10787 : }
10788 : }
10789 : else
10790 50 : sym->result = sym;
10791 : }
10792 :
10793 : /* Set declared_at as it might point to, e.g., a PUBLIC statement, if
10794 : the symbol existed before. */
10795 267 : sym->declared_at = gfc_current_locus;
10796 :
10797 267 : if (!sym->attr.module_procedure)
10798 : return MATCH_ERROR;
10799 :
10800 : /* Signal match_end to expect "end procedure". */
10801 265 : sym->abr_modproc_decl = 1;
10802 :
10803 : /* Change from IFSRC_IFBODY coming from the interface declaration. */
10804 265 : sym->attr.if_source = IFSRC_DECL;
10805 :
10806 265 : gfc_new_block = sym;
10807 :
10808 : /* Make a new formal arglist with the symbols in the procedure
10809 : namespace. */
10810 265 : head = tail = NULL;
10811 600 : for (formal = sym->formal; formal && formal->sym; formal = formal->next)
10812 : {
10813 335 : if (formal == sym->formal)
10814 238 : head = tail = gfc_get_formal_arglist ();
10815 : else
10816 : {
10817 97 : tail->next = gfc_get_formal_arglist ();
10818 97 : tail = tail->next;
10819 : }
10820 :
10821 335 : if (gfc_copy_dummy_sym (&fsym, formal->sym, 0))
10822 0 : goto cleanup;
10823 :
10824 335 : tail->sym = fsym;
10825 335 : gfc_set_sym_referenced (fsym);
10826 : }
10827 :
10828 : /* The dummy symbols get cleaned up, when the formal_namespace of the
10829 : interface declaration is cleared. This allows us to add the
10830 : explicit interface as is done for other type of procedure. */
10831 265 : if (!gfc_add_explicit_interface (sym, IFSRC_DECL, head,
10832 : &gfc_current_locus))
10833 : return MATCH_ERROR;
10834 :
10835 265 : if (gfc_match_eos () != MATCH_YES)
10836 : {
10837 : /* Unset st->n.sym. Note: in reject_statement (), the symbol changes are
10838 : undone, such that the st->n.sym->formal points to the original symbol;
10839 : if now this namespace is finalized, the formal namespace is freed,
10840 : but it might be still needed in the parent namespace. */
10841 1 : gfc_symtree *st = gfc_find_symtree (gfc_current_ns->sym_root, sym->name);
10842 1 : st->n.sym = NULL;
10843 1 : gfc_free_symbol (sym->tlink);
10844 1 : sym->tlink = NULL;
10845 1 : sym->refs--;
10846 1 : gfc_syntax_error (ST_MODULE_PROC);
10847 1 : return MATCH_ERROR;
10848 : }
10849 :
10850 : return MATCH_YES;
10851 :
10852 0 : cleanup:
10853 0 : gfc_free_formal_arglist (head);
10854 0 : return MATCH_ERROR;
10855 : }
10856 :
10857 :
10858 : /* Match a module procedure statement. Note that we have to modify
10859 : symbols in the parent's namespace because the current one was there
10860 : to receive symbols that are in an interface's formal argument list. */
10861 :
10862 : match
10863 1620 : gfc_match_modproc (void)
10864 : {
10865 1620 : char name[GFC_MAX_SYMBOL_LEN + 1];
10866 1620 : gfc_symbol *sym;
10867 1620 : match m;
10868 1620 : locus old_locus;
10869 1620 : gfc_namespace *module_ns;
10870 1620 : gfc_interface *old_interface_head, *interface;
10871 :
10872 1620 : if (gfc_state_stack->previous == NULL
10873 1618 : || (gfc_state_stack->state != COMP_INTERFACE
10874 5 : && (gfc_state_stack->state != COMP_CONTAINS
10875 4 : || gfc_state_stack->previous->state != COMP_INTERFACE))
10876 1613 : || current_interface.type == INTERFACE_NAMELESS
10877 1613 : || current_interface.type == INTERFACE_ABSTRACT)
10878 : {
10879 8 : gfc_error ("MODULE PROCEDURE at %C must be in a generic module "
10880 : "interface");
10881 8 : return MATCH_ERROR;
10882 : }
10883 :
10884 1612 : module_ns = gfc_current_ns->parent;
10885 1618 : for (; module_ns; module_ns = module_ns->parent)
10886 1618 : if (module_ns->proc_name->attr.flavor == FL_MODULE
10887 29 : || module_ns->proc_name->attr.flavor == FL_PROGRAM
10888 12 : || (module_ns->proc_name->attr.flavor == FL_PROCEDURE
10889 12 : && !module_ns->proc_name->attr.contained))
10890 : break;
10891 :
10892 1612 : if (module_ns == NULL)
10893 : return MATCH_ERROR;
10894 :
10895 : /* Store the current state of the interface. We will need it if we
10896 : end up with a syntax error and need to recover. */
10897 1612 : old_interface_head = gfc_current_interface_head ();
10898 :
10899 : /* Check if the F2008 optional double colon appears. */
10900 1612 : gfc_gobble_whitespace ();
10901 1612 : old_locus = gfc_current_locus;
10902 1612 : if (gfc_match ("::") == MATCH_YES)
10903 : {
10904 25 : if (!gfc_notify_std (GFC_STD_F2008, "double colon in "
10905 : "MODULE PROCEDURE statement at %L", &old_locus))
10906 : return MATCH_ERROR;
10907 : }
10908 : else
10909 1587 : gfc_current_locus = old_locus;
10910 :
10911 1967 : for (;;)
10912 : {
10913 1967 : bool last = false;
10914 1967 : old_locus = gfc_current_locus;
10915 :
10916 1967 : m = gfc_match_name (name);
10917 1967 : if (m == MATCH_NO)
10918 1 : goto syntax;
10919 1966 : if (m != MATCH_YES)
10920 : return MATCH_ERROR;
10921 :
10922 : /* Check for syntax error before starting to add symbols to the
10923 : current namespace. */
10924 1966 : if (gfc_match_eos () == MATCH_YES)
10925 : last = true;
10926 :
10927 360 : if (!last && gfc_match_char (',') != MATCH_YES)
10928 2 : goto syntax;
10929 :
10930 : /* Now we're sure the syntax is valid, we process this item
10931 : further. */
10932 1964 : if (gfc_get_symbol (name, module_ns, &sym))
10933 : return MATCH_ERROR;
10934 :
10935 1964 : if (sym->attr.intrinsic)
10936 : {
10937 1 : gfc_error ("Intrinsic procedure at %L cannot be a MODULE "
10938 : "PROCEDURE", &old_locus);
10939 1 : return MATCH_ERROR;
10940 : }
10941 :
10942 1963 : if (sym->attr.proc != PROC_MODULE
10943 1963 : && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL))
10944 : return MATCH_ERROR;
10945 :
10946 1960 : if (!gfc_add_interface (sym))
10947 : return MATCH_ERROR;
10948 :
10949 1957 : sym->attr.mod_proc = 1;
10950 1957 : sym->declared_at = old_locus;
10951 :
10952 1957 : if (last)
10953 : break;
10954 : }
10955 :
10956 : return MATCH_YES;
10957 :
10958 3 : syntax:
10959 : /* Restore the previous state of the interface. */
10960 3 : interface = gfc_current_interface_head ();
10961 3 : gfc_set_current_interface_head (old_interface_head);
10962 :
10963 : /* Free the new interfaces. */
10964 10 : while (interface != old_interface_head)
10965 : {
10966 4 : gfc_interface *i = interface->next;
10967 4 : free (interface);
10968 4 : interface = i;
10969 : }
10970 :
10971 : /* And issue a syntax error. */
10972 3 : gfc_syntax_error (ST_MODULE_PROC);
10973 3 : return MATCH_ERROR;
10974 : }
10975 :
10976 :
10977 : /* Check a derived type that is being extended. */
10978 :
10979 : static gfc_symbol*
10980 1551 : check_extended_derived_type (char *name)
10981 : {
10982 1551 : gfc_symbol *extended;
10983 :
10984 1551 : if (gfc_find_symbol (name, gfc_current_ns, 1, &extended))
10985 : {
10986 0 : gfc_error ("Ambiguous symbol in TYPE definition at %C");
10987 0 : return NULL;
10988 : }
10989 :
10990 1551 : extended = gfc_find_dt_in_generic (extended);
10991 :
10992 : /* F08:C428. */
10993 1551 : if (!extended)
10994 : {
10995 2 : gfc_error ("Symbol %qs at %C has not been previously defined", name);
10996 2 : return NULL;
10997 : }
10998 :
10999 1549 : if (extended->attr.flavor != FL_DERIVED)
11000 : {
11001 0 : gfc_error ("%qs in EXTENDS expression at %C is not a "
11002 : "derived type", name);
11003 0 : return NULL;
11004 : }
11005 :
11006 1549 : if (extended->attr.is_bind_c)
11007 : {
11008 1 : gfc_error ("%qs cannot be extended at %C because it "
11009 : "is BIND(C)", extended->name);
11010 1 : return NULL;
11011 : }
11012 :
11013 1548 : if (extended->attr.sequence)
11014 : {
11015 1 : gfc_error ("%qs cannot be extended at %C because it "
11016 : "is a SEQUENCE type", extended->name);
11017 1 : return NULL;
11018 : }
11019 :
11020 : return extended;
11021 : }
11022 :
11023 :
11024 : /* Match the optional attribute specifiers for a type declaration.
11025 : Return MATCH_ERROR if an error is encountered in one of the handled
11026 : attributes (public, private, bind(c)), MATCH_NO if what's found is
11027 : not a handled attribute, and MATCH_YES otherwise. TODO: More error
11028 : checking on attribute conflicts needs to be done. */
11029 :
11030 : static match
11031 19824 : gfc_get_type_attr_spec (symbol_attribute *attr, char *name)
11032 : {
11033 : /* See if the derived type is marked as private. */
11034 19824 : if (gfc_match (" , private") == MATCH_YES)
11035 : {
11036 15 : if (gfc_current_state () != COMP_MODULE)
11037 : {
11038 1 : gfc_error ("Derived type at %C can only be PRIVATE in the "
11039 : "specification part of a module");
11040 1 : return MATCH_ERROR;
11041 : }
11042 :
11043 14 : if (!gfc_add_access (attr, ACCESS_PRIVATE, NULL, NULL))
11044 0 : return MATCH_ERROR;
11045 : }
11046 19809 : else if (gfc_match (" , public") == MATCH_YES)
11047 : {
11048 558 : if (gfc_current_state () != COMP_MODULE)
11049 : {
11050 0 : gfc_error ("Derived type at %C can only be PUBLIC in the "
11051 : "specification part of a module");
11052 0 : return MATCH_ERROR;
11053 : }
11054 :
11055 558 : if (!gfc_add_access (attr, ACCESS_PUBLIC, NULL, NULL))
11056 0 : return MATCH_ERROR;
11057 : }
11058 19251 : else if (gfc_match (" , bind ( c )") == MATCH_YES)
11059 : {
11060 : /* If the type is defined to be bind(c) it then needs to make
11061 : sure that all fields are interoperable. This will
11062 : need to be a semantic check on the finished derived type.
11063 : See 15.2.3 (lines 9-12) of F2003 draft. */
11064 407 : if (!gfc_add_is_bind_c (attr, NULL, &gfc_current_locus, 0))
11065 0 : return MATCH_ERROR;
11066 :
11067 : /* TODO: attr conflicts need to be checked, probably in symbol.cc. */
11068 : }
11069 18844 : else if (gfc_match (" , abstract") == MATCH_YES)
11070 : {
11071 343 : if (!gfc_notify_std (GFC_STD_F2003, "ABSTRACT type at %C"))
11072 : return MATCH_ERROR;
11073 :
11074 342 : if (!gfc_add_abstract (attr, &gfc_current_locus))
11075 1 : return MATCH_ERROR;
11076 : }
11077 18501 : else if (name && gfc_match (" , extends ( %n )", name) == MATCH_YES)
11078 : {
11079 1552 : if (!gfc_add_extension (attr, &gfc_current_locus))
11080 0 : return MATCH_ERROR;
11081 : }
11082 : else
11083 : return MATCH_NO;
11084 :
11085 : /* If we get here, something matched. */
11086 : return MATCH_YES;
11087 : }
11088 :
11089 :
11090 : /* Common function for type declaration blocks similar to derived types, such
11091 : as STRUCTURES and MAPs. Unlike derived types, a structure type
11092 : does NOT have a generic symbol matching the name given by the user.
11093 : STRUCTUREs can share names with variables and PARAMETERs so we must allow
11094 : for the creation of an independent symbol.
11095 : Other parameters are a message to prefix errors with, the name of the new
11096 : type to be created, and the flavor to add to the resulting symbol. */
11097 :
11098 : static bool
11099 717 : get_struct_decl (const char *name, sym_flavor fl, locus *decl,
11100 : gfc_symbol **result)
11101 : {
11102 717 : gfc_symbol *sym;
11103 717 : locus where;
11104 :
11105 717 : gcc_assert (name[0] == (char) TOUPPER (name[0]));
11106 :
11107 717 : if (decl)
11108 717 : where = *decl;
11109 : else
11110 0 : where = gfc_current_locus;
11111 :
11112 717 : if (gfc_get_symbol (name, NULL, &sym))
11113 : return false;
11114 :
11115 717 : if (!sym)
11116 : {
11117 0 : gfc_internal_error ("Failed to create structure type '%s' at %C", name);
11118 : return false;
11119 : }
11120 :
11121 717 : if (sym->components != NULL || sym->attr.zero_comp)
11122 : {
11123 3 : gfc_error ("Type definition of %qs at %C was already defined at %L",
11124 : sym->name, &sym->declared_at);
11125 3 : return false;
11126 : }
11127 :
11128 714 : sym->declared_at = where;
11129 :
11130 714 : if (sym->attr.flavor != fl
11131 714 : && !gfc_add_flavor (&sym->attr, fl, sym->name, NULL))
11132 : return false;
11133 :
11134 714 : if (!sym->hash_value)
11135 : /* Set the hash for the compound name for this type. */
11136 713 : sym->hash_value = gfc_hash_value (sym);
11137 :
11138 : /* Normally the type is expected to have been completely parsed by the time
11139 : a field declaration with this type is seen. For unions, maps, and nested
11140 : structure declarations, we need to indicate that it is okay that we
11141 : haven't seen any components yet. This will be updated after the structure
11142 : is fully parsed. */
11143 714 : sym->attr.zero_comp = 0;
11144 :
11145 : /* Structures always act like derived-types with the SEQUENCE attribute */
11146 714 : gfc_add_sequence (&sym->attr, sym->name, NULL);
11147 :
11148 714 : if (result) *result = sym;
11149 :
11150 : return true;
11151 : }
11152 :
11153 :
11154 : /* Match the opening of a MAP block. Like a struct within a union in C;
11155 : behaves identical to STRUCTURE blocks. */
11156 :
11157 : match
11158 259 : gfc_match_map (void)
11159 : {
11160 : /* Counter used to give unique internal names to map structures. */
11161 259 : static unsigned int gfc_map_id = 0;
11162 259 : char name[GFC_MAX_SYMBOL_LEN + 1];
11163 259 : gfc_symbol *sym;
11164 259 : locus old_loc;
11165 :
11166 259 : old_loc = gfc_current_locus;
11167 :
11168 259 : if (gfc_match_eos () != MATCH_YES)
11169 : {
11170 1 : gfc_error ("Junk after MAP statement at %C");
11171 1 : gfc_current_locus = old_loc;
11172 1 : return MATCH_ERROR;
11173 : }
11174 :
11175 : /* Map blocks are anonymous so we make up unique names for the symbol table
11176 : which are invalid Fortran identifiers. */
11177 258 : snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "MM$%u", gfc_map_id++);
11178 :
11179 258 : if (!get_struct_decl (name, FL_STRUCT, &old_loc, &sym))
11180 : return MATCH_ERROR;
11181 :
11182 258 : gfc_new_block = sym;
11183 :
11184 258 : return MATCH_YES;
11185 : }
11186 :
11187 :
11188 : /* Match the opening of a UNION block. */
11189 :
11190 : match
11191 133 : gfc_match_union (void)
11192 : {
11193 : /* Counter used to give unique internal names to union types. */
11194 133 : static unsigned int gfc_union_id = 0;
11195 133 : char name[GFC_MAX_SYMBOL_LEN + 1];
11196 133 : gfc_symbol *sym;
11197 133 : locus old_loc;
11198 :
11199 133 : old_loc = gfc_current_locus;
11200 :
11201 133 : if (gfc_match_eos () != MATCH_YES)
11202 : {
11203 1 : gfc_error ("Junk after UNION statement at %C");
11204 1 : gfc_current_locus = old_loc;
11205 1 : return MATCH_ERROR;
11206 : }
11207 :
11208 : /* Unions are anonymous so we make up unique names for the symbol table
11209 : which are invalid Fortran identifiers. */
11210 132 : snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "UU$%u", gfc_union_id++);
11211 :
11212 132 : if (!get_struct_decl (name, FL_UNION, &old_loc, &sym))
11213 : return MATCH_ERROR;
11214 :
11215 132 : gfc_new_block = sym;
11216 :
11217 132 : return MATCH_YES;
11218 : }
11219 :
11220 :
11221 : /* Match the beginning of a STRUCTURE declaration. This is similar to
11222 : matching the beginning of a derived type declaration with a few
11223 : twists. The resulting type symbol has no access control or other
11224 : interesting attributes. */
11225 :
11226 : match
11227 336 : gfc_match_structure_decl (void)
11228 : {
11229 : /* Counter used to give unique internal names to anonymous structures. */
11230 336 : static unsigned int gfc_structure_id = 0;
11231 336 : char name[GFC_MAX_SYMBOL_LEN + 1];
11232 336 : gfc_symbol *sym;
11233 336 : match m;
11234 336 : locus where;
11235 :
11236 336 : if (!flag_dec_structure)
11237 : {
11238 3 : gfc_error ("%s at %C is a DEC extension, enable with "
11239 : "%<-fdec-structure%>",
11240 : "STRUCTURE");
11241 3 : return MATCH_ERROR;
11242 : }
11243 :
11244 333 : name[0] = '\0';
11245 :
11246 333 : m = gfc_match (" /%n/", name);
11247 333 : if (m != MATCH_YES)
11248 : {
11249 : /* Non-nested structure declarations require a structure name. */
11250 24 : if (!gfc_comp_struct (gfc_current_state ()))
11251 : {
11252 4 : gfc_error ("Structure name expected in non-nested structure "
11253 : "declaration at %C");
11254 4 : return MATCH_ERROR;
11255 : }
11256 : /* This is an anonymous structure; make up a unique name for it
11257 : (upper-case letters never make it to symbol names from the source).
11258 : The important thing is initializing the type variable
11259 : and setting gfc_new_symbol, which is immediately used by
11260 : parse_structure () and variable_decl () to add components of
11261 : this type. */
11262 20 : snprintf (name, GFC_MAX_SYMBOL_LEN + 1, "SS$%u", gfc_structure_id++);
11263 : }
11264 :
11265 329 : where = gfc_current_locus;
11266 : /* No field list allowed after non-nested structure declaration. */
11267 329 : if (!gfc_comp_struct (gfc_current_state ())
11268 296 : && gfc_match_eos () != MATCH_YES)
11269 : {
11270 1 : gfc_error ("Junk after non-nested STRUCTURE statement at %C");
11271 1 : return MATCH_ERROR;
11272 : }
11273 :
11274 : /* Make sure the name is not the name of an intrinsic type. */
11275 328 : if (gfc_is_intrinsic_typename (name))
11276 : {
11277 1 : gfc_error ("Structure name %qs at %C cannot be the same as an"
11278 : " intrinsic type", name);
11279 1 : return MATCH_ERROR;
11280 : }
11281 :
11282 : /* Store the actual type symbol for the structure with an upper-case first
11283 : letter (an invalid Fortran identifier). */
11284 :
11285 327 : if (!get_struct_decl (gfc_dt_upper_string (name), FL_STRUCT, &where, &sym))
11286 : return MATCH_ERROR;
11287 :
11288 324 : gfc_new_block = sym;
11289 324 : return MATCH_YES;
11290 : }
11291 :
11292 :
11293 : /* This function does some work to determine which matcher should be used to
11294 : * match a statement beginning with "TYPE". This is used to disambiguate TYPE
11295 : * as an alias for PRINT from derived type declarations, TYPE IS statements,
11296 : * and [parameterized] derived type declarations. */
11297 :
11298 : match
11299 534792 : gfc_match_type (gfc_statement *st)
11300 : {
11301 534792 : char name[GFC_MAX_SYMBOL_LEN + 1];
11302 534792 : match m;
11303 534792 : locus old_loc;
11304 :
11305 : /* Requires -fdec. */
11306 534792 : if (!flag_dec)
11307 : return MATCH_NO;
11308 :
11309 2483 : m = gfc_match ("type");
11310 2483 : if (m != MATCH_YES)
11311 : return m;
11312 : /* If we already have an error in the buffer, it is probably from failing to
11313 : * match a derived type data declaration. Let it happen. */
11314 20 : else if (gfc_error_flag_test ())
11315 : return MATCH_NO;
11316 :
11317 20 : old_loc = gfc_current_locus;
11318 20 : *st = ST_NONE;
11319 :
11320 : /* If we see an attribute list before anything else it's definitely a derived
11321 : * type declaration. */
11322 20 : if (gfc_match (" ,") == MATCH_YES || gfc_match (" ::") == MATCH_YES)
11323 8 : goto derived;
11324 :
11325 : /* By now "TYPE" has already been matched. If we do not see a name, this may
11326 : * be something like "TYPE *" or "TYPE <fmt>". */
11327 12 : m = gfc_match_name (name);
11328 12 : if (m != MATCH_YES)
11329 : {
11330 : /* Let print match if it can, otherwise throw an error from
11331 : * gfc_match_derived_decl. */
11332 7 : gfc_current_locus = old_loc;
11333 7 : if (gfc_match_print () == MATCH_YES)
11334 : {
11335 7 : *st = ST_WRITE;
11336 7 : return MATCH_YES;
11337 : }
11338 0 : goto derived;
11339 : }
11340 :
11341 : /* Check for EOS. */
11342 5 : if (gfc_match_eos () == MATCH_YES)
11343 : {
11344 : /* By now we have "TYPE <name> <EOS>". Check first if the name is an
11345 : * intrinsic typename - if so let gfc_match_derived_decl dump an error.
11346 : * Otherwise if gfc_match_derived_decl fails it's probably an existing
11347 : * symbol which can be printed. */
11348 3 : gfc_current_locus = old_loc;
11349 3 : m = gfc_match_derived_decl ();
11350 3 : if (gfc_is_intrinsic_typename (name) || m == MATCH_YES)
11351 : {
11352 2 : *st = ST_DERIVED_DECL;
11353 2 : return m;
11354 : }
11355 : }
11356 : else
11357 : {
11358 : /* Here we have "TYPE <name>". Check for <TYPE IS (> or a PDT declaration
11359 : like <type name(parameter)>. */
11360 2 : gfc_gobble_whitespace ();
11361 2 : bool paren = gfc_peek_ascii_char () == '(';
11362 2 : if (paren)
11363 : {
11364 1 : if (strcmp ("is", name) == 0)
11365 1 : goto typeis;
11366 : else
11367 0 : goto derived;
11368 : }
11369 : }
11370 :
11371 : /* Treat TYPE... like PRINT... */
11372 2 : gfc_current_locus = old_loc;
11373 2 : *st = ST_WRITE;
11374 2 : return gfc_match_print ();
11375 :
11376 8 : derived:
11377 8 : gfc_current_locus = old_loc;
11378 8 : *st = ST_DERIVED_DECL;
11379 8 : return gfc_match_derived_decl ();
11380 :
11381 1 : typeis:
11382 1 : gfc_current_locus = old_loc;
11383 1 : *st = ST_TYPE_IS;
11384 1 : return gfc_match_type_is ();
11385 : }
11386 :
11387 :
11388 : /* Match the beginning of a derived type declaration. If a type name
11389 : was the result of a function, then it is possible to have a symbol
11390 : already to be known as a derived type yet have no components. */
11391 :
11392 : match
11393 16956 : gfc_match_derived_decl (void)
11394 : {
11395 16956 : char name[GFC_MAX_SYMBOL_LEN + 1];
11396 16956 : char parent[GFC_MAX_SYMBOL_LEN + 1];
11397 16956 : symbol_attribute attr;
11398 16956 : gfc_symbol *sym, *gensym;
11399 16956 : gfc_symbol *extended;
11400 16956 : match m;
11401 16956 : match is_type_attr_spec = MATCH_NO;
11402 16956 : bool seen_attr = false;
11403 16956 : gfc_interface *intr = NULL, *head;
11404 16956 : bool parameterized_type = false;
11405 16956 : bool seen_colons = false;
11406 :
11407 16956 : if (gfc_comp_struct (gfc_current_state ()))
11408 : return MATCH_NO;
11409 :
11410 16952 : name[0] = '\0';
11411 16952 : parent[0] = '\0';
11412 16952 : gfc_clear_attr (&attr);
11413 16952 : extended = NULL;
11414 :
11415 19824 : do
11416 : {
11417 19824 : is_type_attr_spec = gfc_get_type_attr_spec (&attr, parent);
11418 19824 : if (is_type_attr_spec == MATCH_ERROR)
11419 : return MATCH_ERROR;
11420 19821 : if (is_type_attr_spec == MATCH_YES)
11421 2872 : seen_attr = true;
11422 19821 : } while (is_type_attr_spec == MATCH_YES);
11423 :
11424 : /* Deal with derived type extensions. The extension attribute has
11425 : been added to 'attr' but now the parent type must be found and
11426 : checked. */
11427 16949 : if (parent[0])
11428 1551 : extended = check_extended_derived_type (parent);
11429 :
11430 16949 : if (parent[0] && !extended)
11431 : return MATCH_ERROR;
11432 :
11433 16945 : m = gfc_match (" ::");
11434 16945 : if (m == MATCH_YES)
11435 : {
11436 : seen_colons = true;
11437 : }
11438 10602 : else if (seen_attr)
11439 : {
11440 5 : gfc_error ("Expected :: in TYPE definition at %C");
11441 5 : return MATCH_ERROR;
11442 : }
11443 :
11444 : /* In free source form, need to check for TYPE XXX as oppose to TYPEXXX.
11445 : But, we need to simply return for TYPE(. */
11446 10597 : if (m == MATCH_NO && gfc_current_form == FORM_FREE)
11447 : {
11448 10548 : char c = gfc_peek_ascii_char ();
11449 10548 : if (c == '(')
11450 : return m;
11451 10467 : if (!gfc_is_whitespace (c))
11452 : {
11453 4 : gfc_error ("Mangled derived type definition at %C");
11454 4 : return MATCH_NO;
11455 : }
11456 : }
11457 :
11458 16855 : m = gfc_match (" %n ", name);
11459 16855 : if (m != MATCH_YES)
11460 : return m;
11461 :
11462 : /* Make sure that we don't identify TYPE IS (...) as a parameterized
11463 : derived type named 'is'.
11464 : TODO Expand the check, when 'name' = "is" by matching " (tname) "
11465 : and checking if this is a(n intrinsic) typename. This picks up
11466 : misplaced TYPE IS statements such as in select_type_1.f03. */
11467 16843 : if (gfc_peek_ascii_char () == '(')
11468 : {
11469 3995 : if (gfc_current_state () == COMP_SELECT_TYPE
11470 459 : || (!seen_colons && !strcmp (name, "is")))
11471 : return MATCH_NO;
11472 : parameterized_type = true;
11473 : }
11474 :
11475 13305 : m = gfc_match_eos ();
11476 13305 : if (m != MATCH_YES && !parameterized_type)
11477 : return m;
11478 :
11479 : /* Make sure the name is not the name of an intrinsic type. */
11480 13302 : if (gfc_is_intrinsic_typename (name))
11481 : {
11482 18 : gfc_error ("Type name %qs at %C cannot be the same as an intrinsic "
11483 : "type", name);
11484 18 : return MATCH_ERROR;
11485 : }
11486 :
11487 13284 : if (gfc_get_symbol (name, NULL, &gensym))
11488 : return MATCH_ERROR;
11489 :
11490 13284 : if (!gensym->attr.generic && gensym->ts.type != BT_UNKNOWN)
11491 : {
11492 5 : if (gensym->ts.u.derived)
11493 0 : gfc_error ("Derived type name %qs at %C already has a basic type "
11494 : "of %s", gensym->name, gfc_typename (&gensym->ts));
11495 : else
11496 5 : gfc_error ("Derived type name %qs at %C already has a basic type",
11497 : gensym->name);
11498 : return MATCH_ERROR;
11499 : }
11500 :
11501 13279 : if (!gensym->attr.generic
11502 13279 : && !gfc_add_generic (&gensym->attr, gensym->name, NULL))
11503 : return MATCH_ERROR;
11504 :
11505 13275 : if (!gensym->attr.function
11506 13275 : && !gfc_add_function (&gensym->attr, gensym->name, NULL))
11507 : return MATCH_ERROR;
11508 :
11509 13274 : if (gensym->attr.dummy)
11510 : {
11511 1 : gfc_error ("Dummy argument %qs at %L cannot be a derived type at %C",
11512 : name, &gensym->declared_at);
11513 1 : return MATCH_ERROR;
11514 : }
11515 :
11516 13273 : sym = gfc_find_dt_in_generic (gensym);
11517 :
11518 13273 : if (sym && (sym->components != NULL || sym->attr.zero_comp))
11519 : {
11520 1 : gfc_error ("Derived type definition of %qs at %C has already been "
11521 : "defined", sym->name);
11522 1 : return MATCH_ERROR;
11523 : }
11524 :
11525 13272 : if (!sym)
11526 : {
11527 : /* Use upper case to save the actual derived-type symbol. */
11528 13182 : gfc_get_symbol (gfc_dt_upper_string (gensym->name), NULL, &sym);
11529 13182 : sym->name = gfc_get_string ("%s", gensym->name);
11530 13182 : head = gensym->generic;
11531 13182 : intr = gfc_get_interface ();
11532 13182 : intr->sym = sym;
11533 13182 : intr->where = gfc_current_locus;
11534 13182 : intr->sym->declared_at = gfc_current_locus;
11535 13182 : intr->next = head;
11536 13182 : gensym->generic = intr;
11537 13182 : gensym->attr.if_source = IFSRC_DECL;
11538 : }
11539 :
11540 : /* The symbol may already have the derived attribute without the
11541 : components. The ways this can happen is via a function
11542 : definition, an INTRINSIC statement or a subtype in another
11543 : derived type that is a pointer. The first part of the AND clause
11544 : is true if the symbol is not the return value of a function. */
11545 13272 : if (sym->attr.flavor != FL_DERIVED
11546 13272 : && !gfc_add_flavor (&sym->attr, FL_DERIVED, sym->name, NULL))
11547 : return MATCH_ERROR;
11548 :
11549 13272 : if (attr.access != ACCESS_UNKNOWN
11550 13272 : && !gfc_add_access (&sym->attr, attr.access, sym->name, NULL))
11551 : return MATCH_ERROR;
11552 13272 : else if (sym->attr.access == ACCESS_UNKNOWN
11553 12704 : && gensym->attr.access != ACCESS_UNKNOWN
11554 13620 : && !gfc_add_access (&sym->attr, gensym->attr.access,
11555 : sym->name, NULL))
11556 : return MATCH_ERROR;
11557 :
11558 13272 : if (sym->attr.access != ACCESS_UNKNOWN
11559 916 : && gensym->attr.access == ACCESS_UNKNOWN)
11560 568 : gensym->attr.access = sym->attr.access;
11561 :
11562 : /* See if the derived type was labeled as bind(c). */
11563 13272 : if (attr.is_bind_c != 0)
11564 404 : sym->attr.is_bind_c = attr.is_bind_c;
11565 :
11566 : /* Construct the f2k_derived namespace if it is not yet there. */
11567 13272 : if (!sym->f2k_derived)
11568 13272 : sym->f2k_derived = gfc_get_namespace (NULL, 0);
11569 :
11570 13272 : if (parameterized_type)
11571 : {
11572 : /* Ignore error or mismatches by going to the end of the statement
11573 : in order to avoid the component declarations causing problems. */
11574 457 : m = gfc_match_formal_arglist (sym, 0, 0, true);
11575 457 : if (m != MATCH_YES)
11576 4 : gfc_error_recovery ();
11577 : else
11578 453 : sym->attr.pdt_template = 1;
11579 457 : m = gfc_match_eos ();
11580 457 : if (m != MATCH_YES)
11581 : {
11582 1 : gfc_error_recovery ();
11583 1 : gfc_error_now ("Garbage after PARAMETERIZED TYPE declaration at %C");
11584 : }
11585 : }
11586 :
11587 13272 : if (extended && !sym->components)
11588 : {
11589 1547 : gfc_component *p;
11590 1547 : gfc_formal_arglist *f, *g, *h;
11591 :
11592 : /* Add the extended derived type as the first component. */
11593 1547 : gfc_add_component (sym, parent, &p);
11594 1547 : extended->refs++;
11595 1547 : gfc_set_sym_referenced (extended);
11596 :
11597 1547 : p->ts.type = BT_DERIVED;
11598 1547 : p->ts.u.derived = extended;
11599 1547 : p->initializer = gfc_default_initializer (&p->ts);
11600 :
11601 : /* Set extension level. */
11602 1547 : if (extended->attr.extension == 255)
11603 : {
11604 : /* Since the extension field is 8 bit wide, we can only have
11605 : up to 255 extension levels. */
11606 0 : gfc_error ("Maximum extension level reached with type %qs at %L",
11607 : extended->name, &extended->declared_at);
11608 0 : return MATCH_ERROR;
11609 : }
11610 1547 : sym->attr.extension = extended->attr.extension + 1;
11611 :
11612 : /* Provide the links between the extended type and its extension. */
11613 1547 : if (!extended->f2k_derived)
11614 1 : extended->f2k_derived = gfc_get_namespace (NULL, 0);
11615 :
11616 : /* Copy the extended type-param-name-list from the extended type,
11617 : append those of the extension and add the whole lot to the
11618 : extension. */
11619 1547 : if (extended->attr.pdt_template)
11620 : {
11621 40 : g = h = NULL;
11622 40 : sym->attr.pdt_template = 1;
11623 111 : for (f = extended->formal; f; f = f->next)
11624 : {
11625 71 : if (f == extended->formal)
11626 : {
11627 40 : g = gfc_get_formal_arglist ();
11628 40 : h = g;
11629 : }
11630 : else
11631 : {
11632 31 : g->next = gfc_get_formal_arglist ();
11633 31 : g = g->next;
11634 : }
11635 71 : g->sym = f->sym;
11636 : }
11637 40 : g->next = sym->formal;
11638 40 : sym->formal = h;
11639 : }
11640 : }
11641 :
11642 13272 : if (!sym->hash_value)
11643 : /* Set the hash for the compound name for this type. */
11644 13272 : sym->hash_value = gfc_hash_value (sym);
11645 :
11646 : /* Take over the ABSTRACT attribute. */
11647 13272 : sym->attr.abstract = attr.abstract;
11648 :
11649 13272 : gfc_new_block = sym;
11650 :
11651 13272 : return MATCH_YES;
11652 : }
11653 :
11654 :
11655 : /* Cray Pointees can be declared as:
11656 : pointer (ipt, a (n,m,...,*)) */
11657 :
11658 : match
11659 240 : gfc_mod_pointee_as (gfc_array_spec *as)
11660 : {
11661 240 : as->cray_pointee = true; /* This will be useful to know later. */
11662 240 : if (as->type == AS_ASSUMED_SIZE)
11663 72 : as->cp_was_assumed = true;
11664 168 : else if (as->type == AS_ASSUMED_SHAPE)
11665 : {
11666 0 : gfc_error ("Cray Pointee at %C cannot be assumed shape array");
11667 0 : return MATCH_ERROR;
11668 : }
11669 : return MATCH_YES;
11670 : }
11671 :
11672 :
11673 : /* Match the enum definition statement, here we are trying to match
11674 : the first line of enum definition statement.
11675 : Returns MATCH_YES if match is found. */
11676 :
11677 : match
11678 158 : gfc_match_enum (void)
11679 : {
11680 158 : match m;
11681 :
11682 158 : m = gfc_match_eos ();
11683 158 : if (m != MATCH_YES)
11684 : return m;
11685 :
11686 158 : if (!gfc_notify_std (GFC_STD_F2003, "ENUM and ENUMERATOR at %C"))
11687 0 : return MATCH_ERROR;
11688 :
11689 : return MATCH_YES;
11690 : }
11691 :
11692 :
11693 : /* Returns an initializer whose value is one higher than the value of the
11694 : LAST_INITIALIZER argument. If the argument is NULL, the
11695 : initializers value will be set to zero. The initializer's kind
11696 : will be set to gfc_c_int_kind.
11697 :
11698 : If -fshort-enums is given, the appropriate kind will be selected
11699 : later after all enumerators have been parsed. A warning is issued
11700 : here if an initializer exceeds gfc_c_int_kind. */
11701 :
11702 : static gfc_expr *
11703 377 : enum_initializer (gfc_expr *last_initializer, locus where)
11704 : {
11705 377 : gfc_expr *result;
11706 377 : result = gfc_get_constant_expr (BT_INTEGER, gfc_c_int_kind, &where);
11707 :
11708 377 : mpz_init (result->value.integer);
11709 :
11710 377 : if (last_initializer != NULL)
11711 : {
11712 266 : mpz_add_ui (result->value.integer, last_initializer->value.integer, 1);
11713 266 : result->where = last_initializer->where;
11714 :
11715 266 : if (gfc_check_integer_range (result->value.integer,
11716 : gfc_c_int_kind) != ARITH_OK)
11717 : {
11718 0 : gfc_error ("Enumerator exceeds the C integer type at %C");
11719 0 : return NULL;
11720 : }
11721 : }
11722 : else
11723 : {
11724 : /* Control comes here, if it's the very first enumerator and no
11725 : initializer has been given. It will be initialized to zero. */
11726 111 : mpz_set_si (result->value.integer, 0);
11727 : }
11728 :
11729 : return result;
11730 : }
11731 :
11732 :
11733 : /* Match a variable name with an optional initializer. When this
11734 : subroutine is called, a variable is expected to be parsed next.
11735 : Depending on what is happening at the moment, updates either the
11736 : symbol table or the current interface. */
11737 :
11738 : static match
11739 549 : enumerator_decl (void)
11740 : {
11741 549 : char name[GFC_MAX_SYMBOL_LEN + 1];
11742 549 : gfc_expr *initializer;
11743 549 : gfc_array_spec *as = NULL;
11744 549 : gfc_charlen *saved_cl_list;
11745 549 : gfc_symbol *sym;
11746 549 : locus var_locus;
11747 549 : match m;
11748 549 : bool t;
11749 549 : locus old_locus;
11750 :
11751 549 : initializer = NULL;
11752 549 : saved_cl_list = gfc_current_ns->cl_list;
11753 549 : old_locus = gfc_current_locus;
11754 :
11755 : /* When we get here, we've just matched a list of attributes and
11756 : maybe a type and a double colon. The next thing we expect to see
11757 : is the name of the symbol. */
11758 549 : m = gfc_match_name (name);
11759 549 : if (m != MATCH_YES)
11760 1 : goto cleanup;
11761 :
11762 548 : var_locus = gfc_current_locus;
11763 :
11764 : /* OK, we've successfully matched the declaration. Now put the
11765 : symbol in the current namespace. If we fail to create the symbol,
11766 : bail out. */
11767 548 : if (!build_sym (name, 1, NULL, false, &as, &var_locus))
11768 : {
11769 1 : m = MATCH_ERROR;
11770 1 : goto cleanup;
11771 : }
11772 :
11773 : /* The double colon must be present in order to have initializers.
11774 : Otherwise the statement is ambiguous with an assignment statement. */
11775 547 : if (colon_seen)
11776 : {
11777 471 : if (gfc_match_char ('=') == MATCH_YES)
11778 : {
11779 170 : m = gfc_match_init_expr (&initializer);
11780 170 : if (m == MATCH_NO)
11781 : {
11782 0 : gfc_error ("Expected an initialization expression at %C");
11783 0 : m = MATCH_ERROR;
11784 : }
11785 :
11786 170 : if (m != MATCH_YES)
11787 2 : goto cleanup;
11788 : }
11789 : }
11790 :
11791 : /* If we do not have an initializer, the initialization value of the
11792 : previous enumerator (stored in last_initializer) is incremented
11793 : by 1 and is used to initialize the current enumerator. */
11794 545 : if (initializer == NULL)
11795 377 : initializer = enum_initializer (last_initializer, old_locus);
11796 :
11797 545 : if (initializer == NULL || initializer->ts.type != BT_INTEGER)
11798 : {
11799 2 : gfc_error ("ENUMERATOR %L not initialized with integer expression",
11800 : &var_locus);
11801 2 : m = MATCH_ERROR;
11802 2 : goto cleanup;
11803 : }
11804 :
11805 : /* Store this current initializer, for the next enumerator variable
11806 : to be parsed. add_init_expr_to_sym() zeros initializer, so we
11807 : use last_initializer below. */
11808 543 : last_initializer = initializer;
11809 543 : t = add_init_expr_to_sym (name, &initializer, &var_locus,
11810 : saved_cl_list);
11811 :
11812 : /* Maintain enumerator history. */
11813 543 : gfc_find_symbol (name, NULL, 0, &sym);
11814 543 : create_enum_history (sym, last_initializer);
11815 :
11816 543 : return (t) ? MATCH_YES : MATCH_ERROR;
11817 :
11818 6 : cleanup:
11819 : /* Free stuff up and return. */
11820 6 : gfc_free_expr (initializer);
11821 :
11822 6 : return m;
11823 : }
11824 :
11825 :
11826 : /* Match the enumerator definition statement. */
11827 :
11828 : match
11829 815696 : gfc_match_enumerator_def (void)
11830 : {
11831 815696 : match m;
11832 815696 : bool t;
11833 :
11834 815696 : gfc_clear_ts (¤t_ts);
11835 :
11836 815696 : m = gfc_match (" enumerator");
11837 815696 : if (m != MATCH_YES)
11838 : return m;
11839 :
11840 269 : m = gfc_match (" :: ");
11841 269 : if (m == MATCH_ERROR)
11842 : return m;
11843 :
11844 269 : colon_seen = (m == MATCH_YES);
11845 :
11846 269 : if (gfc_current_state () != COMP_ENUM)
11847 : {
11848 4 : gfc_error ("ENUM definition statement expected before %C");
11849 4 : gfc_free_enum_history ();
11850 4 : return MATCH_ERROR;
11851 : }
11852 :
11853 265 : (¤t_ts)->type = BT_INTEGER;
11854 265 : (¤t_ts)->kind = gfc_c_int_kind;
11855 :
11856 265 : gfc_clear_attr (¤t_attr);
11857 265 : t = gfc_add_flavor (¤t_attr, FL_PARAMETER, NULL, NULL);
11858 265 : if (!t)
11859 : {
11860 0 : m = MATCH_ERROR;
11861 0 : goto cleanup;
11862 : }
11863 :
11864 549 : for (;;)
11865 : {
11866 549 : m = enumerator_decl ();
11867 549 : if (m == MATCH_ERROR)
11868 : {
11869 6 : gfc_free_enum_history ();
11870 6 : goto cleanup;
11871 : }
11872 543 : if (m == MATCH_NO)
11873 : break;
11874 :
11875 542 : if (gfc_match_eos () == MATCH_YES)
11876 256 : goto cleanup;
11877 286 : if (gfc_match_char (',') != MATCH_YES)
11878 : break;
11879 : }
11880 :
11881 3 : if (gfc_current_state () == COMP_ENUM)
11882 : {
11883 3 : gfc_free_enum_history ();
11884 3 : gfc_error ("Syntax error in ENUMERATOR definition at %C");
11885 3 : m = MATCH_ERROR;
11886 : }
11887 :
11888 0 : cleanup:
11889 265 : gfc_free_array_spec (current_as);
11890 265 : current_as = NULL;
11891 265 : return m;
11892 :
11893 : }
11894 :
11895 :
11896 : /* Match binding attributes. */
11897 :
11898 : static match
11899 4726 : match_binding_attributes (gfc_typebound_proc* ba, bool generic, bool ppc)
11900 : {
11901 4726 : bool found_passing = false;
11902 4726 : bool seen_ptr = false;
11903 4726 : match m = MATCH_YES;
11904 :
11905 : /* Initialize to defaults. Do so even before the MATCH_NO check so that in
11906 : this case the defaults are in there. */
11907 4726 : ba->access = ACCESS_UNKNOWN;
11908 4726 : ba->pass_arg = NULL;
11909 4726 : ba->pass_arg_num = 0;
11910 4726 : ba->nopass = 0;
11911 4726 : ba->non_overridable = 0;
11912 4726 : ba->deferred = 0;
11913 4726 : ba->ppc = ppc;
11914 :
11915 : /* If we find a comma, we believe there are binding attributes. */
11916 4726 : m = gfc_match_char (',');
11917 4726 : if (m == MATCH_NO)
11918 2482 : goto done;
11919 :
11920 2793 : do
11921 : {
11922 : /* Access specifier. */
11923 :
11924 2793 : m = gfc_match (" public");
11925 2793 : if (m == MATCH_ERROR)
11926 0 : goto error;
11927 2793 : if (m == MATCH_YES)
11928 : {
11929 250 : if (ba->access != ACCESS_UNKNOWN)
11930 : {
11931 0 : gfc_error ("Duplicate access-specifier at %C");
11932 0 : goto error;
11933 : }
11934 :
11935 250 : ba->access = ACCESS_PUBLIC;
11936 250 : continue;
11937 : }
11938 :
11939 2543 : m = gfc_match (" private");
11940 2543 : if (m == MATCH_ERROR)
11941 0 : goto error;
11942 2543 : if (m == MATCH_YES)
11943 : {
11944 181 : if (ba->access != ACCESS_UNKNOWN)
11945 : {
11946 1 : gfc_error ("Duplicate access-specifier at %C");
11947 1 : goto error;
11948 : }
11949 :
11950 180 : ba->access = ACCESS_PRIVATE;
11951 180 : continue;
11952 : }
11953 :
11954 : /* If inside GENERIC, the following is not allowed. */
11955 2362 : if (!generic)
11956 : {
11957 :
11958 : /* NOPASS flag. */
11959 2361 : m = gfc_match (" nopass");
11960 2361 : if (m == MATCH_ERROR)
11961 0 : goto error;
11962 2361 : if (m == MATCH_YES)
11963 : {
11964 707 : if (found_passing)
11965 : {
11966 1 : gfc_error ("Binding attributes already specify passing,"
11967 : " illegal NOPASS at %C");
11968 1 : goto error;
11969 : }
11970 :
11971 706 : found_passing = true;
11972 706 : ba->nopass = 1;
11973 706 : continue;
11974 : }
11975 :
11976 : /* PASS possibly including argument. */
11977 1654 : m = gfc_match (" pass");
11978 1654 : if (m == MATCH_ERROR)
11979 0 : goto error;
11980 1654 : if (m == MATCH_YES)
11981 : {
11982 901 : char arg[GFC_MAX_SYMBOL_LEN + 1];
11983 :
11984 901 : if (found_passing)
11985 : {
11986 2 : gfc_error ("Binding attributes already specify passing,"
11987 : " illegal PASS at %C");
11988 2 : goto error;
11989 : }
11990 :
11991 899 : m = gfc_match (" ( %n )", arg);
11992 899 : if (m == MATCH_ERROR)
11993 0 : goto error;
11994 899 : if (m == MATCH_YES)
11995 490 : ba->pass_arg = gfc_get_string ("%s", arg);
11996 899 : gcc_assert ((m == MATCH_YES) == (ba->pass_arg != NULL));
11997 :
11998 899 : found_passing = true;
11999 899 : ba->nopass = 0;
12000 899 : continue;
12001 899 : }
12002 :
12003 753 : if (ppc)
12004 : {
12005 : /* POINTER flag. */
12006 431 : m = gfc_match (" pointer");
12007 431 : if (m == MATCH_ERROR)
12008 0 : goto error;
12009 431 : if (m == MATCH_YES)
12010 : {
12011 431 : if (seen_ptr)
12012 : {
12013 1 : gfc_error ("Duplicate POINTER attribute at %C");
12014 1 : goto error;
12015 : }
12016 :
12017 430 : seen_ptr = true;
12018 430 : continue;
12019 : }
12020 : }
12021 : else
12022 : {
12023 : /* NON_OVERRIDABLE flag. */
12024 322 : m = gfc_match (" non_overridable");
12025 322 : if (m == MATCH_ERROR)
12026 0 : goto error;
12027 322 : if (m == MATCH_YES)
12028 : {
12029 62 : if (ba->non_overridable)
12030 : {
12031 1 : gfc_error ("Duplicate NON_OVERRIDABLE at %C");
12032 1 : goto error;
12033 : }
12034 :
12035 61 : ba->non_overridable = 1;
12036 61 : continue;
12037 : }
12038 :
12039 : /* DEFERRED flag. */
12040 260 : m = gfc_match (" deferred");
12041 260 : if (m == MATCH_ERROR)
12042 0 : goto error;
12043 260 : if (m == MATCH_YES)
12044 : {
12045 260 : if (ba->deferred)
12046 : {
12047 1 : gfc_error ("Duplicate DEFERRED at %C");
12048 1 : goto error;
12049 : }
12050 :
12051 259 : ba->deferred = 1;
12052 259 : continue;
12053 : }
12054 : }
12055 :
12056 : }
12057 :
12058 : /* Nothing matching found. */
12059 1 : if (generic)
12060 1 : gfc_error ("Expected access-specifier at %C");
12061 : else
12062 0 : gfc_error ("Expected binding attribute at %C");
12063 1 : goto error;
12064 : }
12065 2785 : while (gfc_match_char (',') == MATCH_YES);
12066 :
12067 : /* NON_OVERRIDABLE and DEFERRED exclude themselves. */
12068 2236 : if (ba->non_overridable && ba->deferred)
12069 : {
12070 1 : gfc_error ("NON_OVERRIDABLE and DEFERRED cannot both appear at %C");
12071 1 : goto error;
12072 : }
12073 :
12074 : m = MATCH_YES;
12075 :
12076 4717 : done:
12077 4717 : if (ba->access == ACCESS_UNKNOWN)
12078 4288 : ba->access = ppc ? gfc_current_block()->component_access
12079 : : gfc_typebound_default_access;
12080 :
12081 4717 : if (ppc && !seen_ptr)
12082 : {
12083 2 : gfc_error ("POINTER attribute is required for procedure pointer component"
12084 : " at %C");
12085 2 : goto error;
12086 : }
12087 :
12088 : return m;
12089 :
12090 4726 : error:
12091 : return MATCH_ERROR;
12092 : }
12093 :
12094 :
12095 : /* Match a PROCEDURE specific binding inside a derived type. */
12096 :
12097 : static match
12098 3242 : match_procedure_in_type (void)
12099 : {
12100 3242 : char name[GFC_MAX_SYMBOL_LEN + 1];
12101 3242 : char target_buf[GFC_MAX_SYMBOL_LEN + 1];
12102 3242 : char* target = NULL, *ifc = NULL;
12103 3242 : gfc_typebound_proc tb;
12104 3242 : bool seen_colons;
12105 3242 : bool seen_attrs;
12106 3242 : match m;
12107 3242 : gfc_symtree* stree;
12108 3242 : gfc_namespace* ns;
12109 3242 : gfc_symbol* block;
12110 3242 : int num;
12111 :
12112 : /* Check current state. */
12113 3242 : gcc_assert (gfc_state_stack->state == COMP_DERIVED_CONTAINS);
12114 3242 : block = gfc_state_stack->previous->sym;
12115 3242 : gcc_assert (block);
12116 :
12117 : /* Try to match PROCEDURE(interface). */
12118 3242 : if (gfc_match (" (") == MATCH_YES)
12119 : {
12120 261 : m = gfc_match_name (target_buf);
12121 261 : if (m == MATCH_ERROR)
12122 : return m;
12123 261 : if (m != MATCH_YES)
12124 : {
12125 1 : gfc_error ("Interface-name expected after %<(%> at %C");
12126 1 : return MATCH_ERROR;
12127 : }
12128 :
12129 260 : if (gfc_match (" )") != MATCH_YES)
12130 : {
12131 1 : gfc_error ("%<)%> expected at %C");
12132 1 : return MATCH_ERROR;
12133 : }
12134 :
12135 : ifc = target_buf;
12136 : }
12137 :
12138 : /* Construct the data structure. */
12139 3240 : memset (&tb, 0, sizeof (tb));
12140 3240 : tb.where = gfc_current_locus;
12141 :
12142 : /* Match binding attributes. */
12143 3240 : m = match_binding_attributes (&tb, false, false);
12144 3240 : if (m == MATCH_ERROR)
12145 : return m;
12146 3233 : seen_attrs = (m == MATCH_YES);
12147 :
12148 : /* Check that attribute DEFERRED is given if an interface is specified. */
12149 3233 : if (tb.deferred && !ifc)
12150 : {
12151 1 : gfc_error ("Interface must be specified for DEFERRED binding at %C");
12152 1 : return MATCH_ERROR;
12153 : }
12154 3232 : if (ifc && !tb.deferred)
12155 : {
12156 1 : gfc_error ("PROCEDURE(interface) at %C should be declared DEFERRED");
12157 1 : return MATCH_ERROR;
12158 : }
12159 :
12160 : /* Match the colons. */
12161 3231 : m = gfc_match (" ::");
12162 3231 : if (m == MATCH_ERROR)
12163 : return m;
12164 3231 : seen_colons = (m == MATCH_YES);
12165 3231 : if (seen_attrs && !seen_colons)
12166 : {
12167 4 : gfc_error ("Expected %<::%> after binding-attributes at %C");
12168 4 : return MATCH_ERROR;
12169 : }
12170 :
12171 : /* Match the binding names. */
12172 19 : for(num=1;;num++)
12173 : {
12174 3246 : m = gfc_match_name (name);
12175 3246 : if (m == MATCH_ERROR)
12176 : return m;
12177 3246 : if (m == MATCH_NO)
12178 : {
12179 5 : gfc_error ("Expected binding name at %C");
12180 5 : return MATCH_ERROR;
12181 : }
12182 :
12183 3241 : if (num>1 && !gfc_notify_std (GFC_STD_F2008, "PROCEDURE list at %C"))
12184 : return MATCH_ERROR;
12185 :
12186 : /* Try to match the '=> target', if it's there. */
12187 3240 : target = ifc;
12188 3240 : m = gfc_match (" =>");
12189 3240 : if (m == MATCH_ERROR)
12190 : return m;
12191 3240 : if (m == MATCH_YES)
12192 : {
12193 1250 : if (tb.deferred)
12194 : {
12195 1 : gfc_error ("%<=> target%> is invalid for DEFERRED binding at %C");
12196 1 : return MATCH_ERROR;
12197 : }
12198 :
12199 1249 : if (!seen_colons)
12200 : {
12201 1 : gfc_error ("%<::%> needed in PROCEDURE binding with explicit target"
12202 : " at %C");
12203 1 : return MATCH_ERROR;
12204 : }
12205 :
12206 1248 : m = gfc_match_name (target_buf);
12207 1248 : if (m == MATCH_ERROR)
12208 : return m;
12209 1248 : if (m == MATCH_NO)
12210 : {
12211 2 : gfc_error ("Expected binding target after %<=>%> at %C");
12212 2 : return MATCH_ERROR;
12213 : }
12214 : target = target_buf;
12215 : }
12216 :
12217 : /* If no target was found, it has the same name as the binding. */
12218 1990 : if (!target)
12219 1735 : target = name;
12220 :
12221 : /* Get the namespace to insert the symbols into. */
12222 3236 : ns = block->f2k_derived;
12223 3236 : gcc_assert (ns);
12224 :
12225 : /* If the binding is DEFERRED, check that the containing type is ABSTRACT. */
12226 3236 : if (tb.deferred && !block->attr.abstract)
12227 : {
12228 1 : gfc_error ("Type %qs containing DEFERRED binding at %C "
12229 : "is not ABSTRACT", block->name);
12230 1 : return MATCH_ERROR;
12231 : }
12232 :
12233 : /* See if we already have a binding with this name in the symtree which
12234 : would be an error. If a GENERIC already targeted this binding, it may
12235 : be already there but then typebound is still NULL. */
12236 3235 : stree = gfc_find_symtree (ns->tb_sym_root, name);
12237 3235 : if (stree && stree->n.tb)
12238 : {
12239 2 : gfc_error ("There is already a procedure with binding name %qs for "
12240 : "the derived type %qs at %C", name, block->name);
12241 2 : return MATCH_ERROR;
12242 : }
12243 :
12244 : /* Insert it and set attributes. */
12245 :
12246 3114 : if (!stree)
12247 : {
12248 3114 : stree = gfc_new_symtree (&ns->tb_sym_root, name);
12249 3114 : gcc_assert (stree);
12250 : }
12251 3233 : stree->n.tb = gfc_get_typebound_proc (&tb);
12252 :
12253 3233 : if (gfc_get_sym_tree (target, gfc_current_ns, &stree->n.tb->u.specific,
12254 : false))
12255 : return MATCH_ERROR;
12256 3233 : gfc_set_sym_referenced (stree->n.tb->u.specific->n.sym);
12257 3233 : gfc_add_flavor(&stree->n.tb->u.specific->n.sym->attr, FL_PROCEDURE,
12258 3233 : target, &stree->n.tb->u.specific->n.sym->declared_at);
12259 :
12260 3233 : if (gfc_match_eos () == MATCH_YES)
12261 : return MATCH_YES;
12262 20 : if (gfc_match_char (',') != MATCH_YES)
12263 1 : goto syntax;
12264 : }
12265 :
12266 1 : syntax:
12267 1 : gfc_error ("Syntax error in PROCEDURE statement at %C");
12268 1 : return MATCH_ERROR;
12269 : }
12270 :
12271 :
12272 : /* Match a GENERIC statement.
12273 : F2018 15.4.3.3 GENERIC statement
12274 :
12275 : A GENERIC statement specifies a generic identifier for one or more specific
12276 : procedures, in the same way as a generic interface block that does not contain
12277 : interface bodies.
12278 :
12279 : R1510 generic-stmt is:
12280 : GENERIC [ , access-spec ] :: generic-spec => specific-procedure-list
12281 :
12282 : C1510 (R1510) A specific-procedure in a GENERIC statement shall not specify a
12283 : procedure that was specified previously in any accessible interface with the
12284 : same generic identifier.
12285 :
12286 : If access-spec appears, it specifies the accessibility (8.5.2) of generic-spec.
12287 :
12288 : For GENERIC statements outside of a derived type, use is made of the existing,
12289 : typebound matching functions to obtain access-spec and generic-spec. After
12290 : this the standard INTERFACE machinery is used. */
12291 :
12292 : static match
12293 100 : match_generic_stmt (void)
12294 : {
12295 100 : char name[GFC_MAX_SYMBOL_LEN + 1];
12296 : /* Allow space for OPERATOR(...). */
12297 100 : char generic_spec_name[GFC_MAX_SYMBOL_LEN + 16];
12298 : /* Generics other than uops */
12299 100 : gfc_symbol* generic_spec = NULL;
12300 : /* Generic uops */
12301 100 : gfc_user_op *generic_uop = NULL;
12302 : /* For the matching calls */
12303 100 : gfc_typebound_proc tbattr;
12304 100 : gfc_namespace* ns = gfc_current_ns;
12305 100 : interface_type op_type;
12306 100 : gfc_intrinsic_op op;
12307 100 : match m;
12308 100 : gfc_symtree* st;
12309 : /* The specific-procedure-list */
12310 100 : gfc_interface *generic = NULL;
12311 : /* The head of the specific-procedure-list */
12312 100 : gfc_interface **generic_tail = NULL;
12313 :
12314 100 : memset (&tbattr, 0, sizeof (tbattr));
12315 100 : tbattr.where = gfc_current_locus;
12316 :
12317 : /* See if we get an access-specifier. */
12318 100 : m = match_binding_attributes (&tbattr, true, false);
12319 100 : tbattr.where = gfc_current_locus;
12320 100 : if (m == MATCH_ERROR)
12321 0 : goto error;
12322 :
12323 : /* Now the colons, those are required. */
12324 100 : if (gfc_match (" ::") != MATCH_YES)
12325 : {
12326 0 : gfc_error ("Expected %<::%> at %C");
12327 0 : goto error;
12328 : }
12329 :
12330 : /* Match the generic-spec name; depending on type (operator / generic) format
12331 : it for future error messages in 'generic_spec_name'. */
12332 100 : m = gfc_match_generic_spec (&op_type, name, &op);
12333 100 : if (m == MATCH_ERROR)
12334 : return MATCH_ERROR;
12335 100 : if (m == MATCH_NO)
12336 : {
12337 0 : gfc_error ("Expected generic name or operator descriptor at %C");
12338 0 : goto error;
12339 : }
12340 :
12341 100 : switch (op_type)
12342 : {
12343 63 : case INTERFACE_GENERIC:
12344 63 : case INTERFACE_DTIO:
12345 63 : snprintf (generic_spec_name, sizeof (generic_spec_name), "%s", name);
12346 63 : break;
12347 :
12348 22 : case INTERFACE_USER_OP:
12349 22 : snprintf (generic_spec_name, sizeof (generic_spec_name), "OPERATOR(.%s.)", name);
12350 22 : break;
12351 :
12352 13 : case INTERFACE_INTRINSIC_OP:
12353 13 : snprintf (generic_spec_name, sizeof (generic_spec_name), "OPERATOR(%s)",
12354 : gfc_op2string (op));
12355 13 : break;
12356 :
12357 2 : case INTERFACE_NAMELESS:
12358 2 : gfc_error ("Malformed GENERIC statement at %C");
12359 2 : goto error;
12360 0 : break;
12361 :
12362 0 : default:
12363 0 : gcc_unreachable ();
12364 : }
12365 :
12366 : /* Match the required =>. */
12367 98 : if (gfc_match (" =>") != MATCH_YES)
12368 : {
12369 1 : gfc_error ("Expected %<=>%> at %C");
12370 1 : goto error;
12371 : }
12372 :
12373 :
12374 97 : if (gfc_current_state () != COMP_MODULE && tbattr.access != ACCESS_UNKNOWN)
12375 : {
12376 1 : gfc_error ("The access specification at %L not in a module",
12377 : &tbattr.where);
12378 1 : goto error;
12379 : }
12380 :
12381 : /* Try to find existing generic-spec with this name for this operator;
12382 : if there is something, check that it is another generic-spec and then
12383 : extend it rather than building a new symbol. Otherwise, create a new
12384 : one with the right attributes. */
12385 :
12386 96 : switch (op_type)
12387 : {
12388 61 : case INTERFACE_DTIO:
12389 61 : case INTERFACE_GENERIC:
12390 61 : st = gfc_find_symtree (ns->sym_root, name);
12391 61 : generic_spec = st ? st->n.sym : NULL;
12392 61 : if (generic_spec)
12393 : {
12394 25 : if (generic_spec->attr.flavor != FL_PROCEDURE
12395 11 : && generic_spec->attr.flavor != FL_UNKNOWN)
12396 : {
12397 1 : gfc_error ("The generic-spec name %qs at %C clashes with the "
12398 : "name of an entity declared at %L that is not a "
12399 : "procedure", name, &generic_spec->declared_at);
12400 1 : goto error;
12401 : }
12402 :
12403 24 : if (op_type == INTERFACE_GENERIC && !generic_spec->attr.generic
12404 10 : && generic_spec->attr.flavor != FL_UNKNOWN)
12405 : {
12406 0 : gfc_error ("There's already a non-generic procedure with "
12407 : "name %qs at %C", generic_spec->name);
12408 0 : goto error;
12409 : }
12410 :
12411 24 : if (tbattr.access != ACCESS_UNKNOWN)
12412 : {
12413 2 : if (generic_spec->attr.access != tbattr.access)
12414 : {
12415 1 : gfc_error ("The access specification at %L conflicts with "
12416 : "that already given to %qs", &tbattr.where,
12417 : generic_spec->name);
12418 1 : goto error;
12419 : }
12420 : else
12421 : {
12422 1 : gfc_error ("The access specification at %L repeats that "
12423 : "already given to %qs", &tbattr.where,
12424 : generic_spec->name);
12425 1 : goto error;
12426 : }
12427 : }
12428 :
12429 22 : if (generic_spec->ts.type != BT_UNKNOWN)
12430 : {
12431 1 : gfc_error ("The generic-spec in the generic statement at %C "
12432 : "has a type from the declaration at %L",
12433 : &generic_spec->declared_at);
12434 1 : goto error;
12435 : }
12436 : }
12437 :
12438 : /* Now create the generic_spec if it doesn't already exist and provide
12439 : is with the appropriate attributes. */
12440 57 : if (!generic_spec || generic_spec->attr.flavor != FL_PROCEDURE)
12441 : {
12442 45 : if (!generic_spec)
12443 : {
12444 36 : gfc_get_symbol (name, ns, &generic_spec, &gfc_current_locus);
12445 36 : gfc_set_sym_referenced (generic_spec);
12446 36 : generic_spec->attr.access = tbattr.access;
12447 : }
12448 9 : else if (generic_spec->attr.access == ACCESS_UNKNOWN)
12449 0 : generic_spec->attr.access = tbattr.access;
12450 45 : generic_spec->refs++;
12451 45 : generic_spec->attr.generic = 1;
12452 45 : generic_spec->attr.flavor = FL_PROCEDURE;
12453 :
12454 45 : generic_spec->declared_at = gfc_current_locus;
12455 : }
12456 :
12457 : /* Prepare to add the specific procedures. */
12458 57 : generic = generic_spec->generic;
12459 57 : generic_tail = &generic_spec->generic;
12460 57 : break;
12461 :
12462 22 : case INTERFACE_USER_OP:
12463 22 : st = gfc_find_symtree (ns->uop_root, name);
12464 22 : generic_uop = st ? st->n.uop : NULL;
12465 2 : if (generic_uop)
12466 : {
12467 2 : if (generic_uop->access != ACCESS_UNKNOWN
12468 2 : && tbattr.access != ACCESS_UNKNOWN)
12469 : {
12470 2 : if (generic_uop->access != tbattr.access)
12471 : {
12472 1 : gfc_error ("The user operator at %L must have the same "
12473 : "access specification as already defined user "
12474 : "operator %qs", &tbattr.where, generic_spec_name);
12475 1 : goto error;
12476 : }
12477 : else
12478 : {
12479 1 : gfc_error ("The user operator at %L repeats the access "
12480 : "specification of already defined user operator " "%qs", &tbattr.where, generic_spec_name);
12481 1 : goto error;
12482 : }
12483 : }
12484 0 : else if (generic_uop->access == ACCESS_UNKNOWN)
12485 0 : generic_uop->access = tbattr.access;
12486 : }
12487 : else
12488 : {
12489 20 : generic_uop = gfc_get_uop (name);
12490 20 : generic_uop->access = tbattr.access;
12491 : }
12492 :
12493 : /* Prepare to add the specific procedures. */
12494 20 : generic = generic_uop->op;
12495 20 : generic_tail = &generic_uop->op;
12496 20 : break;
12497 :
12498 13 : case INTERFACE_INTRINSIC_OP:
12499 13 : generic = ns->op[op];
12500 13 : generic_tail = &ns->op[op];
12501 13 : break;
12502 :
12503 0 : default:
12504 0 : gcc_unreachable ();
12505 : }
12506 :
12507 : /* Now, match all following names in the specific-procedure-list. */
12508 154 : do
12509 : {
12510 154 : m = gfc_match_name (name);
12511 154 : if (m == MATCH_ERROR)
12512 0 : goto error;
12513 154 : if (m == MATCH_NO)
12514 : {
12515 0 : gfc_error ("Expected specific procedure name at %C");
12516 0 : goto error;
12517 : }
12518 :
12519 154 : if (op_type == INTERFACE_GENERIC
12520 95 : && !strcmp (generic_spec->name, name))
12521 : {
12522 2 : gfc_error ("The name %qs of the specific procedure at %C conflicts "
12523 : "with that of the generic-spec", name);
12524 2 : goto error;
12525 : }
12526 :
12527 152 : generic = *generic_tail;
12528 242 : for (; generic; generic = generic->next)
12529 : {
12530 90 : if (!strcmp (generic->sym->name, name))
12531 : {
12532 0 : gfc_error ("%qs already defined as a specific procedure for the"
12533 : " generic %qs at %C", name, generic_spec->name);
12534 0 : goto error;
12535 : }
12536 : }
12537 :
12538 152 : gfc_find_sym_tree (name, ns, 1, &st);
12539 152 : if (!st)
12540 : {
12541 : /* This might be a procedure that has not yet been parsed. If
12542 : so gfc_fixup_sibling_symbols will replace this symbol with
12543 : that of the procedure. */
12544 75 : gfc_get_sym_tree (name, ns, &st, false);
12545 75 : st->n.sym->refs++;
12546 : }
12547 :
12548 152 : generic = gfc_get_interface();
12549 152 : generic->next = *generic_tail;
12550 152 : *generic_tail = generic;
12551 152 : generic->where = gfc_current_locus;
12552 152 : generic->sym = st->n.sym;
12553 : }
12554 152 : while (gfc_match (" ,") == MATCH_YES);
12555 :
12556 88 : if (gfc_match_eos () != MATCH_YES)
12557 : {
12558 0 : gfc_error ("Junk after GENERIC statement at %C");
12559 0 : goto error;
12560 : }
12561 :
12562 88 : gfc_commit_symbols ();
12563 88 : return MATCH_YES;
12564 :
12565 100 : error:
12566 : return MATCH_ERROR;
12567 : }
12568 :
12569 :
12570 : /* Match a GENERIC procedure binding inside a derived type. */
12571 :
12572 : static match
12573 954 : match_typebound_generic (void)
12574 : {
12575 954 : char name[GFC_MAX_SYMBOL_LEN + 1];
12576 954 : char bind_name[GFC_MAX_SYMBOL_LEN + 16]; /* Allow space for OPERATOR(...). */
12577 954 : gfc_symbol* block;
12578 954 : gfc_typebound_proc tbattr; /* Used for match_binding_attributes. */
12579 954 : gfc_typebound_proc* tb;
12580 954 : gfc_namespace* ns;
12581 954 : interface_type op_type;
12582 954 : gfc_intrinsic_op op;
12583 954 : match m;
12584 :
12585 : /* Check current state. */
12586 954 : if (gfc_current_state () == COMP_DERIVED)
12587 : {
12588 0 : gfc_error ("GENERIC at %C must be inside a derived-type CONTAINS");
12589 0 : return MATCH_ERROR;
12590 : }
12591 954 : if (gfc_current_state () != COMP_DERIVED_CONTAINS)
12592 : return MATCH_NO;
12593 954 : block = gfc_state_stack->previous->sym;
12594 954 : ns = block->f2k_derived;
12595 954 : gcc_assert (block && ns);
12596 :
12597 954 : memset (&tbattr, 0, sizeof (tbattr));
12598 954 : tbattr.where = gfc_current_locus;
12599 :
12600 : /* See if we get an access-specifier. */
12601 954 : m = match_binding_attributes (&tbattr, true, false);
12602 954 : if (m == MATCH_ERROR)
12603 1 : goto error;
12604 :
12605 : /* Now the colons, those are required. */
12606 953 : if (gfc_match (" ::") != MATCH_YES)
12607 : {
12608 0 : gfc_error ("Expected %<::%> at %C");
12609 0 : goto error;
12610 : }
12611 :
12612 : /* Match the binding name; depending on type (operator / generic) format
12613 : it for future error messages into bind_name. */
12614 :
12615 953 : m = gfc_match_generic_spec (&op_type, name, &op);
12616 953 : if (m == MATCH_ERROR)
12617 : return MATCH_ERROR;
12618 953 : if (m == MATCH_NO)
12619 : {
12620 0 : gfc_error ("Expected generic name or operator descriptor at %C");
12621 0 : goto error;
12622 : }
12623 :
12624 953 : switch (op_type)
12625 : {
12626 470 : case INTERFACE_GENERIC:
12627 470 : case INTERFACE_DTIO:
12628 470 : snprintf (bind_name, sizeof (bind_name), "%s", name);
12629 470 : break;
12630 :
12631 47 : case INTERFACE_USER_OP:
12632 47 : snprintf (bind_name, sizeof (bind_name), "OPERATOR(.%s.)", name);
12633 47 : break;
12634 :
12635 435 : case INTERFACE_INTRINSIC_OP:
12636 435 : snprintf (bind_name, sizeof (bind_name), "OPERATOR(%s)",
12637 : gfc_op2string (op));
12638 435 : break;
12639 :
12640 1 : case INTERFACE_NAMELESS:
12641 1 : gfc_error ("Malformed GENERIC statement at %C");
12642 1 : goto error;
12643 0 : break;
12644 :
12645 0 : default:
12646 0 : gcc_unreachable ();
12647 : }
12648 :
12649 : /* Match the required =>. */
12650 952 : if (gfc_match (" =>") != MATCH_YES)
12651 : {
12652 0 : gfc_error ("Expected %<=>%> at %C");
12653 0 : goto error;
12654 : }
12655 :
12656 : /* Try to find existing GENERIC binding with this name / for this operator;
12657 : if there is something, check that it is another GENERIC and then extend
12658 : it rather than building a new node. Otherwise, create it and put it
12659 : at the right position. */
12660 :
12661 952 : switch (op_type)
12662 : {
12663 517 : case INTERFACE_DTIO:
12664 517 : case INTERFACE_USER_OP:
12665 517 : case INTERFACE_GENERIC:
12666 517 : {
12667 517 : const bool is_op = (op_type == INTERFACE_USER_OP);
12668 517 : gfc_symtree* st;
12669 :
12670 517 : st = gfc_find_symtree (is_op ? ns->tb_uop_root : ns->tb_sym_root, name);
12671 517 : tb = st ? st->n.tb : NULL;
12672 : break;
12673 : }
12674 :
12675 435 : case INTERFACE_INTRINSIC_OP:
12676 435 : tb = ns->tb_op[op];
12677 435 : break;
12678 :
12679 0 : default:
12680 0 : gcc_unreachable ();
12681 : }
12682 :
12683 446 : if (tb)
12684 : {
12685 9 : if (!tb->is_generic)
12686 : {
12687 1 : gcc_assert (op_type == INTERFACE_GENERIC);
12688 1 : gfc_error ("There's already a non-generic procedure with binding name"
12689 : " %qs for the derived type %qs at %C",
12690 : bind_name, block->name);
12691 1 : goto error;
12692 : }
12693 :
12694 8 : if (tb->access != tbattr.access)
12695 : {
12696 2 : gfc_error ("Binding at %C must have the same access as already"
12697 : " defined binding %qs", bind_name);
12698 2 : goto error;
12699 : }
12700 : }
12701 : else
12702 : {
12703 943 : tb = gfc_get_typebound_proc (NULL);
12704 943 : tb->where = gfc_current_locus;
12705 943 : tb->access = tbattr.access;
12706 943 : tb->is_generic = 1;
12707 943 : tb->u.generic = NULL;
12708 :
12709 943 : switch (op_type)
12710 : {
12711 508 : case INTERFACE_DTIO:
12712 508 : case INTERFACE_GENERIC:
12713 508 : case INTERFACE_USER_OP:
12714 508 : {
12715 508 : const bool is_op = (op_type == INTERFACE_USER_OP);
12716 508 : gfc_symtree* st = gfc_get_tbp_symtree (is_op ? &ns->tb_uop_root :
12717 : &ns->tb_sym_root, name);
12718 508 : gcc_assert (st);
12719 508 : st->n.tb = tb;
12720 :
12721 508 : break;
12722 : }
12723 :
12724 435 : case INTERFACE_INTRINSIC_OP:
12725 435 : ns->tb_op[op] = tb;
12726 435 : break;
12727 :
12728 0 : default:
12729 0 : gcc_unreachable ();
12730 : }
12731 : }
12732 :
12733 : /* Now, match all following names as specific targets. */
12734 1106 : do
12735 : {
12736 1106 : gfc_symtree* target_st;
12737 1106 : gfc_tbp_generic* target;
12738 :
12739 1106 : m = gfc_match_name (name);
12740 1106 : if (m == MATCH_ERROR)
12741 0 : goto error;
12742 1106 : if (m == MATCH_NO)
12743 : {
12744 1 : gfc_error ("Expected specific binding name at %C");
12745 1 : goto error;
12746 : }
12747 :
12748 1105 : target_st = gfc_get_tbp_symtree (&ns->tb_sym_root, name);
12749 :
12750 : /* See if this is a duplicate specification. */
12751 1340 : for (target = tb->u.generic; target; target = target->next)
12752 236 : if (target_st == target->specific_st)
12753 : {
12754 1 : gfc_error ("%qs already defined as specific binding for the"
12755 : " generic %qs at %C", name, bind_name);
12756 1 : goto error;
12757 : }
12758 :
12759 1104 : target = gfc_get_tbp_generic ();
12760 1104 : target->specific_st = target_st;
12761 1104 : target->specific = NULL;
12762 1104 : target->next = tb->u.generic;
12763 1104 : target->is_operator = ((op_type == INTERFACE_USER_OP)
12764 1104 : || (op_type == INTERFACE_INTRINSIC_OP));
12765 1104 : tb->u.generic = target;
12766 : }
12767 1104 : while (gfc_match (" ,") == MATCH_YES);
12768 :
12769 : /* Here should be the end. */
12770 947 : if (gfc_match_eos () != MATCH_YES)
12771 : {
12772 1 : gfc_error ("Junk after GENERIC binding at %C");
12773 1 : goto error;
12774 : }
12775 :
12776 : return MATCH_YES;
12777 :
12778 954 : error:
12779 : return MATCH_ERROR;
12780 : }
12781 :
12782 :
12783 : match
12784 1054 : gfc_match_generic ()
12785 : {
12786 1054 : if (gfc_option.allow_std & ~GFC_STD_OPT_F08
12787 1052 : && gfc_current_state () != COMP_DERIVED_CONTAINS)
12788 100 : return match_generic_stmt ();
12789 : else
12790 954 : return match_typebound_generic ();
12791 : }
12792 :
12793 :
12794 : /* Match a FINAL declaration inside a derived type. */
12795 :
12796 : match
12797 484 : gfc_match_final_decl (void)
12798 : {
12799 484 : char name[GFC_MAX_SYMBOL_LEN + 1];
12800 484 : gfc_symbol* sym;
12801 484 : match m;
12802 484 : gfc_namespace* module_ns;
12803 484 : bool first, last;
12804 484 : gfc_symbol* block;
12805 :
12806 484 : if (gfc_current_form == FORM_FREE)
12807 : {
12808 484 : char c = gfc_peek_ascii_char ();
12809 484 : if (!gfc_is_whitespace (c) && c != ':')
12810 : return MATCH_NO;
12811 : }
12812 :
12813 483 : if (gfc_state_stack->state != COMP_DERIVED_CONTAINS)
12814 : {
12815 1 : if (gfc_current_form == FORM_FIXED)
12816 : return MATCH_NO;
12817 :
12818 1 : gfc_error ("FINAL declaration at %C must be inside a derived type "
12819 : "CONTAINS section");
12820 1 : return MATCH_ERROR;
12821 : }
12822 :
12823 482 : block = gfc_state_stack->previous->sym;
12824 482 : gcc_assert (block);
12825 :
12826 482 : if (gfc_state_stack->previous->previous
12827 482 : && gfc_state_stack->previous->previous->state != COMP_MODULE
12828 6 : && gfc_state_stack->previous->previous->state != COMP_SUBMODULE)
12829 : {
12830 0 : gfc_error ("Derived type declaration with FINAL at %C must be in the"
12831 : " specification part of a MODULE");
12832 0 : return MATCH_ERROR;
12833 : }
12834 :
12835 482 : module_ns = gfc_current_ns;
12836 482 : gcc_assert (module_ns);
12837 482 : gcc_assert (module_ns->proc_name->attr.flavor == FL_MODULE);
12838 :
12839 : /* Match optional ::, don't care about MATCH_YES or MATCH_NO. */
12840 482 : if (gfc_match (" ::") == MATCH_ERROR)
12841 : return MATCH_ERROR;
12842 :
12843 : /* Match the sequence of procedure names. */
12844 : first = true;
12845 : last = false;
12846 574 : do
12847 : {
12848 574 : gfc_finalizer* f;
12849 :
12850 574 : if (first && gfc_match_eos () == MATCH_YES)
12851 : {
12852 2 : gfc_error ("Empty FINAL at %C");
12853 2 : return MATCH_ERROR;
12854 : }
12855 :
12856 572 : m = gfc_match_name (name);
12857 572 : if (m == MATCH_NO)
12858 : {
12859 1 : gfc_error ("Expected module procedure name at %C");
12860 1 : return MATCH_ERROR;
12861 : }
12862 571 : else if (m != MATCH_YES)
12863 : return MATCH_ERROR;
12864 :
12865 571 : if (gfc_match_eos () == MATCH_YES)
12866 : last = true;
12867 93 : if (!last && gfc_match_char (',') != MATCH_YES)
12868 : {
12869 1 : gfc_error ("Expected %<,%> at %C");
12870 1 : return MATCH_ERROR;
12871 : }
12872 :
12873 570 : if (gfc_get_symbol (name, module_ns, &sym))
12874 : {
12875 0 : gfc_error ("Unknown procedure name %qs at %C", name);
12876 0 : return MATCH_ERROR;
12877 : }
12878 :
12879 : /* Mark the symbol as module procedure. */
12880 570 : if (sym->attr.proc != PROC_MODULE
12881 570 : && !gfc_add_procedure (&sym->attr, PROC_MODULE, sym->name, NULL))
12882 : return MATCH_ERROR;
12883 :
12884 : /* Check if we already have this symbol in the list, this is an error. */
12885 769 : for (f = block->f2k_derived->finalizers; f; f = f->next)
12886 200 : if (f->proc_sym == sym)
12887 : {
12888 1 : gfc_error ("%qs at %C is already defined as FINAL procedure",
12889 : name);
12890 1 : return MATCH_ERROR;
12891 : }
12892 :
12893 : /* Add this symbol to the list of finalizers. */
12894 569 : gcc_assert (block->f2k_derived);
12895 569 : sym->refs++;
12896 569 : f = XCNEW (gfc_finalizer);
12897 569 : f->proc_sym = sym;
12898 569 : f->proc_tree = NULL;
12899 569 : f->where = gfc_current_locus;
12900 569 : f->next = block->f2k_derived->finalizers;
12901 569 : block->f2k_derived->finalizers = f;
12902 :
12903 569 : first = false;
12904 : }
12905 569 : while (!last);
12906 :
12907 : return MATCH_YES;
12908 : }
12909 :
12910 :
12911 : const ext_attr_t ext_attr_list[] = {
12912 : { "dllimport", EXT_ATTR_DLLIMPORT, "dllimport" },
12913 : { "dllexport", EXT_ATTR_DLLEXPORT, "dllexport" },
12914 : { "cdecl", EXT_ATTR_CDECL, "cdecl" },
12915 : { "stdcall", EXT_ATTR_STDCALL, "stdcall" },
12916 : { "fastcall", EXT_ATTR_FASTCALL, "fastcall" },
12917 : { "no_arg_check", EXT_ATTR_NO_ARG_CHECK, NULL },
12918 : { "deprecated", EXT_ATTR_DEPRECATED, NULL },
12919 : { "noinline", EXT_ATTR_NOINLINE, NULL },
12920 : { "noreturn", EXT_ATTR_NORETURN, NULL },
12921 : { "weak", EXT_ATTR_WEAK, NULL },
12922 : { "inline", EXT_ATTR_INLINE, NULL },
12923 : { "always_inline",EXT_ATTR_ALWAYS_INLINE,NULL },
12924 : { NULL, EXT_ATTR_LAST, NULL }
12925 : };
12926 :
12927 : /* Match a !GCC$ ATTRIBUTES statement of the form:
12928 : !GCC$ ATTRIBUTES attribute-list :: var-name [, var-name] ...
12929 : When we come here, we have already matched the !GCC$ ATTRIBUTES string.
12930 :
12931 : TODO: We should support all GCC attributes using the same syntax for
12932 : the attribute list, i.e. the list in C
12933 : __attributes(( attribute-list ))
12934 : matches then
12935 : !GCC$ ATTRIBUTES attribute-list ::
12936 : Cf. c-parser.cc's c_parser_attributes; the data can then directly be
12937 : saved into a TREE.
12938 :
12939 : As there is absolutely no risk of confusion, we should never return
12940 : MATCH_NO. */
12941 : match
12942 2984 : gfc_match_gcc_attributes (void)
12943 : {
12944 2984 : symbol_attribute attr;
12945 2984 : char name[GFC_MAX_SYMBOL_LEN + 1];
12946 2984 : unsigned id;
12947 2984 : gfc_symbol *sym;
12948 2984 : match m;
12949 :
12950 2984 : gfc_clear_attr (&attr);
12951 2988 : for(;;)
12952 : {
12953 2986 : char ch;
12954 :
12955 2986 : if (gfc_match_name (name) != MATCH_YES)
12956 : return MATCH_ERROR;
12957 :
12958 18042 : for (id = 0; id < EXT_ATTR_LAST; id++)
12959 18042 : if (strcmp (name, ext_attr_list[id].name) == 0)
12960 : break;
12961 :
12962 2986 : if (id == EXT_ATTR_LAST)
12963 : {
12964 0 : gfc_error ("Unknown attribute in !GCC$ ATTRIBUTES statement at %C");
12965 0 : return MATCH_ERROR;
12966 : }
12967 :
12968 2986 : if (!gfc_add_ext_attribute (&attr, (ext_attr_id_t)id, &gfc_current_locus))
12969 : return MATCH_ERROR;
12970 :
12971 2986 : gfc_gobble_whitespace ();
12972 2986 : ch = gfc_next_ascii_char ();
12973 2986 : if (ch == ':')
12974 : {
12975 : /* This is the successful exit condition for the loop. */
12976 2984 : if (gfc_next_ascii_char () == ':')
12977 : break;
12978 : }
12979 :
12980 2 : if (ch == ',')
12981 2 : continue;
12982 :
12983 0 : goto syntax;
12984 2 : }
12985 :
12986 2984 : if (gfc_match_eos () == MATCH_YES)
12987 0 : goto syntax;
12988 :
12989 2999 : for(;;)
12990 : {
12991 2999 : m = gfc_match_name (name);
12992 2999 : if (m != MATCH_YES)
12993 : return m;
12994 :
12995 2999 : if (find_special (name, &sym, true))
12996 : return MATCH_ERROR;
12997 :
12998 2999 : sym->attr.ext_attr |= attr.ext_attr;
12999 :
13000 : /* INLINE and ALWAYS_INLINE are incompatible with NOINLINE. In the
13001 : middle-end the DECL_UNINLINABLE flag set by NOINLINE always wins, so
13002 : the inline request would be silently ignored. Warn and drop it. */
13003 2999 : if (sym->attr.ext_attr & (1 << EXT_ATTR_NOINLINE))
13004 : {
13005 5 : if (sym->attr.ext_attr & (1 << EXT_ATTR_ALWAYS_INLINE))
13006 : {
13007 2 : gfc_warning (0, "Attribute %<ALWAYS_INLINE%> at %C is "
13008 : "incompatible with %<NOINLINE%> for %qs and will "
13009 : "be ignored", sym->name);
13010 2 : sym->attr.ext_attr &= ~(1 << EXT_ATTR_ALWAYS_INLINE);
13011 : }
13012 5 : if (sym->attr.ext_attr & (1 << EXT_ATTR_INLINE))
13013 : {
13014 2 : gfc_warning (0, "Attribute %<INLINE%> at %C is incompatible "
13015 : "with %<NOINLINE%> for %qs and will be ignored",
13016 : sym->name);
13017 2 : sym->attr.ext_attr &= ~(1 << EXT_ATTR_INLINE);
13018 : }
13019 : }
13020 :
13021 2999 : if (gfc_match_eos () == MATCH_YES)
13022 : break;
13023 :
13024 15 : if (gfc_match_char (',') != MATCH_YES)
13025 0 : goto syntax;
13026 : }
13027 :
13028 : return MATCH_YES;
13029 :
13030 0 : syntax:
13031 0 : gfc_error ("Syntax error in !GCC$ ATTRIBUTES statement at %C");
13032 0 : return MATCH_ERROR;
13033 : }
13034 :
13035 :
13036 : /* Match a !GCC$ UNROLL statement of the form:
13037 : !GCC$ UNROLL n
13038 :
13039 : The parameter n is the number of times we are supposed to unroll.
13040 :
13041 : When we come here, we have already matched the !GCC$ UNROLL string. */
13042 : match
13043 19 : gfc_match_gcc_unroll (void)
13044 : {
13045 19 : int value;
13046 :
13047 : /* FIXME: use gfc_match_small_literal_int instead, delete small_int */
13048 19 : if (gfc_match_small_int (&value) == MATCH_YES)
13049 : {
13050 19 : if (value < 0 || value > USHRT_MAX)
13051 : {
13052 2 : gfc_error ("%<GCC unroll%> directive requires a"
13053 : " non-negative integral constant"
13054 : " less than or equal to %u at %C",
13055 : USHRT_MAX
13056 : );
13057 2 : return MATCH_ERROR;
13058 : }
13059 17 : if (gfc_match_eos () == MATCH_YES)
13060 : {
13061 17 : directive_unroll = value == 0 ? 1 : value;
13062 17 : return MATCH_YES;
13063 : }
13064 : }
13065 :
13066 0 : gfc_error ("Syntax error in !GCC$ UNROLL directive at %C");
13067 0 : return MATCH_ERROR;
13068 : }
13069 :
13070 : /* Match a !GCC$ builtin (b) attributes simd flags if('target') form:
13071 :
13072 : The parameter b is name of a middle-end built-in.
13073 : FLAGS is optional and must be one of:
13074 : - (inbranch)
13075 : - (notinbranch)
13076 :
13077 : IF('target') is optional and TARGET is a name of a multilib ABI.
13078 :
13079 : When we come here, we have already matched the !GCC$ builtin string. */
13080 :
13081 : match
13082 3463809 : gfc_match_gcc_builtin (void)
13083 : {
13084 3463809 : char builtin[GFC_MAX_SYMBOL_LEN + 1];
13085 3463809 : char target[GFC_MAX_SYMBOL_LEN + 1];
13086 :
13087 3463809 : if (gfc_match (" ( %n ) attributes simd", builtin) != MATCH_YES)
13088 : return MATCH_ERROR;
13089 :
13090 3463809 : gfc_simd_clause clause = SIMD_NONE;
13091 3463809 : if (gfc_match (" ( notinbranch ) ") == MATCH_YES)
13092 : clause = SIMD_NOTINBRANCH;
13093 21 : else if (gfc_match (" ( inbranch ) ") == MATCH_YES)
13094 15 : clause = SIMD_INBRANCH;
13095 :
13096 3463809 : if (gfc_match (" if ( '%n' ) ", target) == MATCH_YES)
13097 : {
13098 3463779 : if (strcmp (target, "fastmath") == 0)
13099 : {
13100 0 : if (!fast_math_flags_set_p (&global_options))
13101 : return MATCH_YES;
13102 : }
13103 : else
13104 : {
13105 3463779 : const char *abi = targetm.get_multilib_abi_name ();
13106 3463779 : if (abi == NULL || strcmp (abi, target) != 0)
13107 : return MATCH_YES;
13108 : }
13109 : }
13110 :
13111 1709834 : if (gfc_vectorized_builtins == NULL)
13112 31669 : gfc_vectorized_builtins = new hash_map<nofree_string_hash, int> ();
13113 :
13114 1709834 : char *r = XNEWVEC (char, strlen (builtin) + 32);
13115 1709834 : sprintf (r, "__builtin_%s", builtin);
13116 :
13117 1709834 : bool existed;
13118 1709834 : int &value = gfc_vectorized_builtins->get_or_insert (r, &existed);
13119 1709834 : value |= clause;
13120 1709834 : if (existed)
13121 23 : free (r);
13122 :
13123 : return MATCH_YES;
13124 : }
13125 :
13126 : /* Match an !GCC$ IVDEP statement.
13127 : When we come here, we have already matched the !GCC$ IVDEP string. */
13128 :
13129 : match
13130 3 : gfc_match_gcc_ivdep (void)
13131 : {
13132 3 : if (gfc_match_eos () == MATCH_YES)
13133 : {
13134 3 : directive_ivdep = true;
13135 3 : return MATCH_YES;
13136 : }
13137 :
13138 0 : gfc_error ("Syntax error in !GCC$ IVDEP directive at %C");
13139 0 : return MATCH_ERROR;
13140 : }
13141 :
13142 : /* Match an !GCC$ VECTOR statement.
13143 : When we come here, we have already matched the !GCC$ VECTOR string. */
13144 :
13145 : match
13146 3 : gfc_match_gcc_vector (void)
13147 : {
13148 3 : if (gfc_match_eos () == MATCH_YES)
13149 : {
13150 3 : directive_vector = true;
13151 3 : directive_novector = false;
13152 3 : return MATCH_YES;
13153 : }
13154 :
13155 0 : gfc_error ("Syntax error in !GCC$ VECTOR directive at %C");
13156 0 : return MATCH_ERROR;
13157 : }
13158 :
13159 : /* Match an !GCC$ NOVECTOR statement.
13160 : When we come here, we have already matched the !GCC$ NOVECTOR string. */
13161 :
13162 : match
13163 3 : gfc_match_gcc_novector (void)
13164 : {
13165 3 : if (gfc_match_eos () == MATCH_YES)
13166 : {
13167 3 : directive_novector = true;
13168 3 : directive_vector = false;
13169 3 : return MATCH_YES;
13170 : }
13171 :
13172 0 : gfc_error ("Syntax error in !GCC$ NOVECTOR directive at %C");
13173 0 : return MATCH_ERROR;
13174 : }
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