Line data Source code
1 : /* Primary expression subroutines
2 : Copyright (C) 2000-2026 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 "gfortran.h"
26 : #include "arith.h"
27 : #include "match.h"
28 : #include "parse.h"
29 : #include "constructor.h"
30 :
31 : int matching_actual_arglist = 0;
32 :
33 : /* Matches a kind-parameter expression, which is either a named
34 : symbolic constant or a nonnegative integer constant. If
35 : successful, sets the kind value to the correct integer.
36 : The argument 'is_iso_c' signals whether the kind is an ISO_C_BINDING
37 : symbol like e.g. 'c_int'. */
38 :
39 : static match
40 472304 : match_kind_param (int *kind, int *is_iso_c)
41 : {
42 472304 : char name[GFC_MAX_SYMBOL_LEN + 1];
43 472304 : gfc_symbol *sym;
44 472304 : match m;
45 :
46 472304 : *is_iso_c = 0;
47 :
48 472304 : m = gfc_match_small_literal_int (kind, NULL, false);
49 472304 : if (m != MATCH_NO)
50 : return m;
51 :
52 94744 : m = gfc_match_name (name, false);
53 94744 : if (m != MATCH_YES)
54 : return m;
55 :
56 93012 : if (gfc_find_symbol (name, NULL, 1, &sym))
57 : return MATCH_ERROR;
58 :
59 93012 : if (sym == NULL)
60 : return MATCH_NO;
61 :
62 93011 : *is_iso_c = sym->attr.is_iso_c;
63 :
64 93011 : if (sym->attr.flavor != FL_PARAMETER)
65 : return MATCH_NO;
66 :
67 93011 : if (sym->value == NULL)
68 : return MATCH_NO;
69 :
70 93010 : if (gfc_extract_int (sym->value, kind))
71 : return MATCH_NO;
72 :
73 93010 : gfc_set_sym_referenced (sym);
74 :
75 93010 : if (*kind < 0)
76 : return MATCH_NO;
77 :
78 : return MATCH_YES;
79 : }
80 :
81 :
82 : /* Get a trailing kind-specification for non-character variables.
83 : Returns:
84 : * the integer kind value or
85 : * -1 if an error was generated,
86 : * -2 if no kind was found.
87 : The argument 'is_iso_c' signals whether the kind is an ISO_C_BINDING
88 : symbol like e.g. 'c_int'. */
89 :
90 : static int
91 4552620 : get_kind (int *is_iso_c)
92 : {
93 4552620 : int kind;
94 4552620 : match m;
95 :
96 4552620 : *is_iso_c = 0;
97 :
98 4552620 : if (gfc_match_char ('_', false) != MATCH_YES)
99 : return -2;
100 :
101 472304 : m = match_kind_param (&kind, is_iso_c);
102 472304 : if (m == MATCH_NO)
103 1734 : gfc_error ("Missing kind-parameter at %C");
104 :
105 472304 : return (m == MATCH_YES) ? kind : -1;
106 : }
107 :
108 :
109 : /* Given a character and a radix, see if the character is a valid
110 : digit in that radix. */
111 :
112 : bool
113 30670244 : gfc_check_digit (char c, int radix)
114 : {
115 30670244 : bool r;
116 :
117 30670244 : switch (radix)
118 : {
119 15638 : case 2:
120 15638 : r = ('0' <= c && c <= '1');
121 15638 : break;
122 :
123 19182 : case 8:
124 19182 : r = ('0' <= c && c <= '7');
125 19182 : break;
126 :
127 30570641 : case 10:
128 30570641 : r = ('0' <= c && c <= '9');
129 30570641 : break;
130 :
131 64783 : case 16:
132 64783 : r = ISXDIGIT (c);
133 64783 : break;
134 :
135 0 : default:
136 0 : gfc_internal_error ("gfc_check_digit(): bad radix");
137 : }
138 :
139 30670244 : return r;
140 : }
141 :
142 :
143 : /* Match the digit string part of an integer if signflag is not set,
144 : the signed digit string part if signflag is set. If the buffer
145 : is NULL, we just count characters for the resolution pass. Returns
146 : the number of characters matched, -1 for no match. */
147 :
148 : static int
149 17913445 : match_digits (int signflag, int radix, char *buffer)
150 : {
151 17913445 : locus old_loc;
152 17913445 : int length;
153 17913445 : char c;
154 :
155 17913445 : length = 0;
156 17913445 : c = gfc_next_ascii_char ();
157 :
158 17913445 : if (signflag && (c == '+' || c == '-'))
159 : {
160 5716 : if (buffer != NULL)
161 2285 : *buffer++ = c;
162 5716 : gfc_gobble_whitespace ();
163 5716 : c = gfc_next_ascii_char ();
164 5716 : length++;
165 : }
166 :
167 17913445 : if (!gfc_check_digit (c, radix))
168 : return -1;
169 :
170 8581478 : length++;
171 8581478 : if (buffer != NULL)
172 4282582 : *buffer++ = c;
173 :
174 16881656 : for (;;)
175 : {
176 12731567 : old_loc = gfc_current_locus;
177 12731567 : c = gfc_next_ascii_char ();
178 :
179 12731567 : if (!gfc_check_digit (c, radix))
180 : break;
181 :
182 4150089 : if (buffer != NULL)
183 2072773 : *buffer++ = c;
184 4150089 : length++;
185 : }
186 :
187 8581478 : gfc_current_locus = old_loc;
188 :
189 8581478 : return length;
190 : }
191 :
192 : /* Convert an integer string to an expression node. */
193 :
194 : static gfc_expr *
195 4175319 : convert_integer (const char *buffer, int kind, int radix, locus *where)
196 : {
197 4175319 : gfc_expr *e;
198 4175319 : const char *t;
199 :
200 4175319 : e = gfc_get_constant_expr (BT_INTEGER, kind, where);
201 : /* A leading plus is allowed, but not by mpz_set_str. */
202 4175319 : if (buffer[0] == '+')
203 21 : t = buffer + 1;
204 : else
205 : t = buffer;
206 4175319 : mpz_set_str (e->value.integer, t, radix);
207 :
208 4175319 : return e;
209 : }
210 :
211 :
212 : /* Convert an unsigned string to an expression node. XXX:
213 : This needs a calculation modulo 2^n. TODO: Implement restriction
214 : that no unary minus is permitted. */
215 : static gfc_expr *
216 101372 : convert_unsigned (const char *buffer, int kind, int radix, locus *where)
217 : {
218 101372 : gfc_expr *e;
219 101372 : const char *t;
220 101372 : int k;
221 101372 : arith rc;
222 :
223 101372 : e = gfc_get_constant_expr (BT_UNSIGNED, kind, where);
224 : /* A leading plus is allowed, but not by mpz_set_str. */
225 101372 : if (buffer[0] == '+')
226 0 : t = buffer + 1;
227 : else
228 : t = buffer;
229 :
230 101372 : mpz_set_str (e->value.integer, t, radix);
231 :
232 101372 : k = gfc_validate_kind (BT_UNSIGNED, kind, false);
233 :
234 : /* TODO Maybe move this somewhere else. */
235 101372 : rc = gfc_range_check (e);
236 101372 : if (rc != ARITH_OK)
237 : {
238 2 : if (pedantic)
239 1 : gfc_error_now (gfc_arith_error (rc), &e->where);
240 : else
241 1 : gfc_warning (0, gfc_arith_error (rc), &e->where);
242 : }
243 :
244 101372 : gfc_convert_mpz_to_unsigned (e->value.integer, gfc_unsigned_kinds[k].bit_size,
245 : false);
246 :
247 101372 : return e;
248 : }
249 :
250 : /* Convert a real string to an expression node. */
251 :
252 : static gfc_expr *
253 217611 : convert_real (const char *buffer, int kind, locus *where)
254 : {
255 217611 : gfc_expr *e;
256 :
257 217611 : e = gfc_get_constant_expr (BT_REAL, kind, where);
258 217611 : mpfr_set_str (e->value.real, buffer, 10, GFC_RND_MODE);
259 :
260 217611 : return e;
261 : }
262 :
263 :
264 : /* Convert a pair of real, constant expression nodes to a single
265 : complex expression node. */
266 :
267 : static gfc_expr *
268 6987 : convert_complex (gfc_expr *real, gfc_expr *imag, int kind)
269 : {
270 6987 : gfc_expr *e;
271 :
272 6987 : e = gfc_get_constant_expr (BT_COMPLEX, kind, &real->where);
273 6987 : mpc_set_fr_fr (e->value.complex, real->value.real, imag->value.real,
274 : GFC_MPC_RND_MODE);
275 :
276 6987 : return e;
277 : }
278 :
279 :
280 : /* Match an integer (digit string and optional kind).
281 : A sign will be accepted if signflag is set. */
282 :
283 : static match
284 13037709 : match_integer_constant (gfc_expr **result, int signflag)
285 : {
286 13037709 : int length, kind, is_iso_c;
287 13037709 : locus old_loc;
288 13037709 : char *buffer;
289 13037709 : gfc_expr *e;
290 :
291 13037709 : old_loc = gfc_current_locus;
292 13037709 : gfc_gobble_whitespace ();
293 :
294 13037709 : length = match_digits (signflag, 10, NULL);
295 13037709 : gfc_current_locus = old_loc;
296 13037709 : if (length == -1)
297 : return MATCH_NO;
298 :
299 4177053 : buffer = (char *) alloca (length + 1);
300 4177053 : memset (buffer, '\0', length + 1);
301 :
302 4177053 : gfc_gobble_whitespace ();
303 :
304 4177053 : match_digits (signflag, 10, buffer);
305 :
306 4177053 : kind = get_kind (&is_iso_c);
307 4177053 : if (kind == -2)
308 3869483 : kind = gfc_default_integer_kind;
309 4177053 : if (kind == -1)
310 : return MATCH_ERROR;
311 :
312 4175323 : if (kind == 4 && flag_integer4_kind == 8)
313 0 : kind = 8;
314 :
315 4175323 : if (gfc_validate_kind (BT_INTEGER, kind, true) < 0)
316 : {
317 4 : gfc_error ("Integer kind %d at %C not available", kind);
318 4 : return MATCH_ERROR;
319 : }
320 :
321 4175319 : e = convert_integer (buffer, kind, 10, &gfc_current_locus);
322 4175319 : e->ts.is_c_interop = is_iso_c;
323 :
324 4175319 : if (gfc_range_check (e) != ARITH_OK)
325 : {
326 9586 : gfc_error ("Integer too big for its kind at %C. This check can be "
327 : "disabled with the option %<-fno-range-check%>");
328 :
329 9586 : gfc_free_expr (e);
330 9586 : return MATCH_ERROR;
331 : }
332 :
333 4165733 : *result = e;
334 4165733 : return MATCH_YES;
335 : }
336 :
337 : /* Match an unsigned constant (an integer with suffix u). No sign
338 : is currently accepted, in accordance with 24-116.txt, but that
339 : could be changed later. This is very much like the integer
340 : constant matching above, but with enough differences to put it into
341 : its own function. */
342 :
343 : static match
344 588996 : match_unsigned_constant (gfc_expr **result)
345 : {
346 588996 : int length, kind, is_iso_c;
347 588996 : locus old_loc;
348 588996 : char *buffer;
349 588996 : gfc_expr *e;
350 588996 : match m;
351 :
352 588996 : old_loc = gfc_current_locus;
353 588996 : gfc_gobble_whitespace ();
354 :
355 588996 : length = match_digits (/* signflag = */ false, 10, NULL);
356 :
357 588996 : if (length == -1)
358 471311 : goto fail;
359 :
360 117685 : m = gfc_match_char ('u');
361 117685 : if (m == MATCH_NO)
362 16313 : goto fail;
363 :
364 101372 : gfc_current_locus = old_loc;
365 :
366 101372 : buffer = (char *) alloca (length + 1);
367 101372 : memset (buffer, '\0', length + 1);
368 :
369 101372 : gfc_gobble_whitespace ();
370 :
371 101372 : match_digits (false, 10, buffer);
372 :
373 101372 : m = gfc_match_char ('u');
374 101372 : if (m == MATCH_NO)
375 0 : goto fail;
376 :
377 101372 : kind = get_kind (&is_iso_c);
378 101372 : if (kind == -2)
379 8357 : kind = gfc_default_unsigned_kind;
380 101372 : if (kind == -1)
381 : return MATCH_ERROR;
382 :
383 101372 : if (kind == 4 && flag_integer4_kind == 8)
384 0 : kind = 8;
385 :
386 101372 : if (gfc_validate_kind (BT_UNSIGNED, kind, true) < 0)
387 : {
388 0 : gfc_error ("Unsigned kind %d at %C not available", kind);
389 0 : return MATCH_ERROR;
390 : }
391 :
392 101372 : e = convert_unsigned (buffer, kind, 10, &gfc_current_locus);
393 101372 : e->ts.is_c_interop = is_iso_c;
394 :
395 101372 : *result = e;
396 101372 : return MATCH_YES;
397 :
398 487624 : fail:
399 487624 : gfc_current_locus = old_loc;
400 487624 : return MATCH_NO;
401 : }
402 :
403 : /* Match a Hollerith constant. */
404 :
405 : static match
406 6524411 : match_hollerith_constant (gfc_expr **result)
407 : {
408 6524411 : locus old_loc;
409 6524411 : gfc_expr *e = NULL;
410 6524411 : int num, pad;
411 6524411 : int i;
412 :
413 6524411 : old_loc = gfc_current_locus;
414 6524411 : gfc_gobble_whitespace ();
415 :
416 6524411 : if (match_integer_constant (&e, 0) == MATCH_YES
417 6524411 : && gfc_match_char ('h') == MATCH_YES)
418 : {
419 2636 : if (!gfc_notify_std (GFC_STD_LEGACY, "Hollerith constant at %C"))
420 14 : goto cleanup;
421 :
422 2622 : if (gfc_extract_int (e, &num, 1))
423 0 : goto cleanup;
424 2622 : if (num == 0)
425 : {
426 1 : gfc_error ("Invalid Hollerith constant: %L must contain at least "
427 : "one character", &old_loc);
428 1 : goto cleanup;
429 : }
430 2621 : if (e->ts.kind != gfc_default_integer_kind)
431 : {
432 1 : gfc_error ("Invalid Hollerith constant: Integer kind at %L "
433 : "should be default", &old_loc);
434 1 : goto cleanup;
435 : }
436 : else
437 : {
438 2620 : gfc_free_expr (e);
439 2620 : e = gfc_get_constant_expr (BT_HOLLERITH, gfc_default_character_kind,
440 : &gfc_current_locus);
441 :
442 : /* Calculate padding needed to fit default integer memory. */
443 2620 : pad = gfc_default_integer_kind - (num % gfc_default_integer_kind);
444 :
445 2620 : e->representation.string = XCNEWVEC (char, num + pad + 1);
446 :
447 14886 : for (i = 0; i < num; i++)
448 : {
449 12266 : gfc_char_t c = gfc_next_char_literal (INSTRING_WARN);
450 12266 : if (! gfc_wide_fits_in_byte (c))
451 : {
452 0 : gfc_error ("Invalid Hollerith constant at %L contains a "
453 : "wide character", &old_loc);
454 0 : goto cleanup;
455 : }
456 :
457 12266 : e->representation.string[i] = (unsigned char) c;
458 : }
459 :
460 : /* Now pad with blanks and end with a null char. */
461 11762 : for (i = 0; i < pad; i++)
462 9142 : e->representation.string[num + i] = ' ';
463 :
464 2620 : e->representation.string[num + i] = '\0';
465 2620 : e->representation.length = num + pad;
466 2620 : e->ts.u.pad = pad;
467 :
468 2620 : *result = e;
469 2620 : return MATCH_YES;
470 : }
471 : }
472 :
473 6521775 : gfc_free_expr (e);
474 6521775 : gfc_current_locus = old_loc;
475 6521775 : return MATCH_NO;
476 :
477 16 : cleanup:
478 16 : gfc_free_expr (e);
479 16 : return MATCH_ERROR;
480 : }
481 :
482 :
483 : /* Match a binary, octal or hexadecimal constant that can be found in
484 : a DATA statement. The standard permits b'010...', o'73...', and
485 : z'a1...' where b, o, and z can be capital letters. This function
486 : also accepts postfixed forms of the constants: '01...'b, '73...'o,
487 : and 'a1...'z. An additional extension is the use of x for z. */
488 :
489 : static match
490 6731875 : match_boz_constant (gfc_expr **result)
491 : {
492 6731875 : int radix, length, x_hex;
493 6731875 : locus old_loc, start_loc;
494 6731875 : char *buffer, post, delim;
495 6731875 : gfc_expr *e;
496 :
497 6731875 : start_loc = old_loc = gfc_current_locus;
498 6731875 : gfc_gobble_whitespace ();
499 :
500 6731875 : x_hex = 0;
501 6731875 : switch (post = gfc_next_ascii_char ())
502 : {
503 : case 'b':
504 : radix = 2;
505 : post = 0;
506 : break;
507 54515 : case 'o':
508 54515 : radix = 8;
509 54515 : post = 0;
510 54515 : break;
511 90317 : case 'x':
512 90317 : x_hex = 1;
513 : /* Fall through. */
514 : case 'z':
515 : radix = 16;
516 : post = 0;
517 : break;
518 : case '\'':
519 : /* Fall through. */
520 : case '\"':
521 : delim = post;
522 : post = 1;
523 : radix = 16; /* Set to accept any valid digit string. */
524 : break;
525 6448392 : default:
526 6448392 : goto backup;
527 : }
528 :
529 : /* No whitespace allowed here. */
530 :
531 54515 : if (post == 0)
532 283458 : delim = gfc_next_ascii_char ();
533 :
534 283483 : if (delim != '\'' && delim != '\"')
535 279323 : goto backup;
536 :
537 4160 : if (x_hex
538 4160 : && gfc_invalid_boz (G_("Hexadecimal constant at %L uses "
539 : "nonstandard X instead of Z"), &gfc_current_locus))
540 : return MATCH_ERROR;
541 :
542 4158 : old_loc = gfc_current_locus;
543 :
544 4158 : length = match_digits (0, radix, NULL);
545 4158 : if (length == -1)
546 : {
547 0 : gfc_error ("Empty set of digits in BOZ constant at %C");
548 0 : return MATCH_ERROR;
549 : }
550 :
551 4158 : if (gfc_next_ascii_char () != delim)
552 : {
553 0 : gfc_error ("Illegal character in BOZ constant at %C");
554 0 : return MATCH_ERROR;
555 : }
556 :
557 4158 : if (post == 1)
558 : {
559 25 : switch (gfc_next_ascii_char ())
560 : {
561 : case 'b':
562 : radix = 2;
563 : break;
564 6 : case 'o':
565 6 : radix = 8;
566 6 : break;
567 13 : case 'x':
568 : /* Fall through. */
569 13 : case 'z':
570 13 : radix = 16;
571 13 : break;
572 0 : default:
573 0 : goto backup;
574 : }
575 :
576 25 : if (gfc_invalid_boz (G_("BOZ constant at %C uses nonstandard postfix "
577 : "syntax"), &gfc_current_locus))
578 : return MATCH_ERROR;
579 : }
580 :
581 4157 : gfc_current_locus = old_loc;
582 :
583 4157 : buffer = (char *) alloca (length + 1);
584 4157 : memset (buffer, '\0', length + 1);
585 :
586 4157 : match_digits (0, radix, buffer);
587 4157 : gfc_next_ascii_char (); /* Eat delimiter. */
588 4157 : if (post == 1)
589 24 : gfc_next_ascii_char (); /* Eat postfixed b, o, z, or x. */
590 :
591 4157 : e = gfc_get_expr ();
592 4157 : e->expr_type = EXPR_CONSTANT;
593 4157 : e->ts.type = BT_BOZ;
594 4157 : e->where = gfc_current_locus;
595 4157 : e->boz.rdx = radix;
596 4157 : e->boz.len = length;
597 4157 : e->boz.str = XCNEWVEC (char, length + 1);
598 4157 : strncpy (e->boz.str, buffer, length);
599 :
600 4157 : if (!gfc_in_match_data ()
601 4157 : && (!gfc_notify_std(GFC_STD_F2003, "BOZ used outside a DATA "
602 : "statement at %L", &e->where)))
603 : return MATCH_ERROR;
604 :
605 4152 : *result = e;
606 4152 : return MATCH_YES;
607 :
608 6727715 : backup:
609 6727715 : gfc_current_locus = start_loc;
610 6727715 : return MATCH_NO;
611 : }
612 :
613 :
614 : /* Match a real constant of some sort. Allow a signed constant if signflag
615 : is nonzero. */
616 :
617 : static match
618 6834931 : match_real_constant (gfc_expr **result, int signflag)
619 : {
620 6834931 : int kind, count, seen_dp, seen_digits, is_iso_c, default_exponent;
621 6834931 : locus old_loc, temp_loc;
622 6834931 : char *p, *buffer, c, exp_char;
623 6834931 : gfc_expr *e;
624 6834931 : bool negate;
625 :
626 6834931 : old_loc = gfc_current_locus;
627 6834931 : gfc_gobble_whitespace ();
628 :
629 6834931 : e = NULL;
630 :
631 6834931 : default_exponent = 0;
632 6834931 : count = 0;
633 6834931 : seen_dp = 0;
634 6834931 : seen_digits = 0;
635 6834931 : exp_char = ' ';
636 6834931 : negate = false;
637 :
638 6834931 : c = gfc_next_ascii_char ();
639 6834931 : if (signflag && (c == '+' || c == '-'))
640 : {
641 6468 : if (c == '-')
642 6332 : negate = true;
643 :
644 6468 : gfc_gobble_whitespace ();
645 6468 : c = gfc_next_ascii_char ();
646 : }
647 :
648 : /* Scan significand. */
649 3900284 : for (;; c = gfc_next_ascii_char (), count++)
650 : {
651 10735215 : if (c == '.')
652 : {
653 278093 : if (seen_dp)
654 204 : goto done;
655 :
656 : /* Check to see if "." goes with a following operator like
657 : ".eq.". */
658 277889 : temp_loc = gfc_current_locus;
659 277889 : c = gfc_next_ascii_char ();
660 :
661 277889 : if (c == 'e' || c == 'd' || c == 'q')
662 : {
663 17710 : c = gfc_next_ascii_char ();
664 17710 : if (c == '.')
665 0 : goto done; /* Operator named .e. or .d. */
666 : }
667 :
668 277889 : if (ISALPHA (c))
669 66864 : goto done; /* Distinguish 1.e9 from 1.eq.2 */
670 :
671 211025 : gfc_current_locus = temp_loc;
672 211025 : seen_dp = 1;
673 211025 : continue;
674 : }
675 :
676 10457122 : if (ISDIGIT (c))
677 : {
678 3689259 : seen_digits = 1;
679 3689259 : continue;
680 : }
681 :
682 6767863 : break;
683 : }
684 :
685 6767863 : if (!seen_digits || (c != 'e' && c != 'd' && c != 'q'))
686 2322750 : goto done;
687 37504 : exp_char = c;
688 :
689 :
690 37504 : if (c == 'q')
691 : {
692 0 : if (!gfc_notify_std (GFC_STD_GNU, "exponent-letter %<q%> in "
693 : "real-literal-constant at %C"))
694 : return MATCH_ERROR;
695 0 : else if (warn_real_q_constant)
696 0 : gfc_warning (OPT_Wreal_q_constant,
697 : "Extension: exponent-letter %<q%> in real-literal-constant "
698 : "at %C");
699 : }
700 :
701 : /* Scan exponent. */
702 37504 : c = gfc_next_ascii_char ();
703 37504 : count++;
704 :
705 37504 : if (c == '+' || c == '-')
706 : { /* optional sign */
707 6911 : c = gfc_next_ascii_char ();
708 6911 : count++;
709 : }
710 :
711 37504 : if (!ISDIGIT (c))
712 : {
713 : /* With -fdec, default exponent to 0 instead of complaining. */
714 40 : if (flag_dec)
715 37494 : default_exponent = 1;
716 : else
717 : {
718 10 : gfc_error ("Missing exponent in real number at %C");
719 10 : return MATCH_ERROR;
720 : }
721 : }
722 :
723 77779 : while (ISDIGIT (c))
724 : {
725 40285 : c = gfc_next_ascii_char ();
726 40285 : count++;
727 : }
728 :
729 6834921 : done:
730 : /* Check that we have a numeric constant. */
731 6834921 : if (!seen_digits || (!seen_dp && exp_char == ' '))
732 : {
733 6617306 : gfc_current_locus = old_loc;
734 6617306 : return MATCH_NO;
735 : }
736 :
737 : /* Convert the number. */
738 217615 : gfc_current_locus = old_loc;
739 217615 : gfc_gobble_whitespace ();
740 :
741 217615 : buffer = (char *) alloca (count + default_exponent + 1);
742 217615 : memset (buffer, '\0', count + default_exponent + 1);
743 :
744 217615 : p = buffer;
745 217615 : c = gfc_next_ascii_char ();
746 217615 : if (c == '+' || c == '-')
747 : {
748 3037 : gfc_gobble_whitespace ();
749 3037 : c = gfc_next_ascii_char ();
750 : }
751 :
752 : /* Hack for mpfr_set_str(). */
753 1406009 : for (;;)
754 : {
755 811812 : if (c == 'd' || c == 'q')
756 29959 : *p = 'e';
757 : else
758 781853 : *p = c;
759 811812 : p++;
760 811812 : if (--count == 0)
761 : break;
762 :
763 594197 : c = gfc_next_ascii_char ();
764 : }
765 217615 : if (default_exponent)
766 30 : *p++ = '0';
767 :
768 217615 : kind = get_kind (&is_iso_c);
769 217615 : if (kind == -1)
770 4 : goto cleanup;
771 :
772 217611 : if (kind == 4)
773 : {
774 20358 : if (flag_real4_kind == 8)
775 192 : kind = 8;
776 20358 : if (flag_real4_kind == 10)
777 192 : kind = 10;
778 20358 : if (flag_real4_kind == 16)
779 384 : kind = 16;
780 : }
781 197253 : else if (kind == 8)
782 : {
783 26820 : if (flag_real8_kind == 4)
784 192 : kind = 4;
785 26820 : if (flag_real8_kind == 10)
786 192 : kind = 10;
787 26820 : if (flag_real8_kind == 16)
788 384 : kind = 16;
789 : }
790 :
791 217611 : switch (exp_char)
792 : {
793 29959 : case 'd':
794 29959 : if (kind != -2)
795 : {
796 0 : gfc_error ("Real number at %C has a %<d%> exponent and an explicit "
797 : "kind");
798 0 : goto cleanup;
799 : }
800 29959 : kind = gfc_default_double_kind;
801 29959 : break;
802 :
803 0 : case 'q':
804 0 : if (kind != -2)
805 : {
806 0 : gfc_error ("Real number at %C has a %<q%> exponent and an explicit "
807 : "kind");
808 0 : goto cleanup;
809 : }
810 :
811 : /* The maximum possible real kind type parameter is 16. First, try
812 : that for the kind, then fallback to trying kind=10 (Intel 80 bit)
813 : extended precision. If neither value works, just given up. */
814 0 : kind = 16;
815 0 : if (gfc_validate_kind (BT_REAL, kind, true) < 0)
816 : {
817 0 : kind = 10;
818 0 : if (gfc_validate_kind (BT_REAL, kind, true) < 0)
819 : {
820 0 : gfc_error ("Invalid exponent-letter %<q%> in "
821 : "real-literal-constant at %C");
822 0 : goto cleanup;
823 : }
824 : }
825 : break;
826 :
827 187652 : default:
828 187652 : if (kind == -2)
829 116426 : kind = gfc_default_real_kind;
830 :
831 187652 : if (gfc_validate_kind (BT_REAL, kind, true) < 0)
832 : {
833 0 : gfc_error ("Invalid real kind %d at %C", kind);
834 0 : goto cleanup;
835 : }
836 : }
837 :
838 217611 : e = convert_real (buffer, kind, &gfc_current_locus);
839 217611 : if (negate)
840 2932 : mpfr_neg (e->value.real, e->value.real, GFC_RND_MODE);
841 217611 : e->ts.is_c_interop = is_iso_c;
842 :
843 217611 : switch (gfc_range_check (e))
844 : {
845 : case ARITH_OK:
846 : break;
847 1 : case ARITH_OVERFLOW:
848 1 : gfc_error ("Real constant overflows its kind at %C");
849 1 : goto cleanup;
850 :
851 0 : case ARITH_UNDERFLOW:
852 0 : if (warn_underflow)
853 0 : gfc_warning (OPT_Wunderflow, "Real constant underflows its kind at %C");
854 0 : mpfr_set_ui (e->value.real, 0, GFC_RND_MODE);
855 0 : break;
856 :
857 0 : default:
858 0 : gfc_internal_error ("gfc_range_check() returned bad value");
859 : }
860 :
861 : /* Warn about trailing digits which suggest the user added too many
862 : trailing digits, which may cause the appearance of higher precision
863 : than the kind can support.
864 :
865 : This is done by replacing the rightmost non-zero digit with zero
866 : and comparing with the original value. If these are equal, we
867 : assume the user supplied more digits than intended (or forgot to
868 : convert to the correct kind).
869 : */
870 :
871 217610 : if (warn_conversion_extra)
872 : {
873 21 : mpfr_t r;
874 21 : char *c1;
875 21 : bool did_break;
876 :
877 21 : c1 = strchr (buffer, 'e');
878 21 : if (c1 == NULL)
879 18 : c1 = buffer + strlen(buffer);
880 :
881 30 : did_break = false;
882 30 : for (p = c1; p > buffer;)
883 : {
884 30 : p--;
885 30 : if (*p == '.')
886 7 : continue;
887 :
888 23 : if (*p != '0')
889 : {
890 21 : *p = '0';
891 21 : did_break = true;
892 21 : break;
893 : }
894 : }
895 :
896 21 : if (did_break)
897 : {
898 21 : mpfr_init (r);
899 21 : mpfr_set_str (r, buffer, 10, GFC_RND_MODE);
900 21 : if (negate)
901 0 : mpfr_neg (r, r, GFC_RND_MODE);
902 :
903 21 : mpfr_sub (r, r, e->value.real, GFC_RND_MODE);
904 :
905 21 : if (mpfr_cmp_ui (r, 0) == 0)
906 1 : gfc_warning (OPT_Wconversion_extra, "Non-significant digits "
907 : "in %qs number at %C, maybe incorrect KIND",
908 : gfc_typename (&e->ts));
909 :
910 21 : mpfr_clear (r);
911 : }
912 : }
913 :
914 217610 : *result = e;
915 217610 : return MATCH_YES;
916 :
917 5 : cleanup:
918 5 : gfc_free_expr (e);
919 5 : return MATCH_ERROR;
920 : }
921 :
922 :
923 : /* Match a substring reference. */
924 :
925 : static match
926 605332 : match_substring (gfc_charlen *cl, int init, gfc_ref **result, bool deferred)
927 : {
928 605332 : gfc_expr *start, *end;
929 605332 : locus old_loc;
930 605332 : gfc_ref *ref;
931 605332 : match m;
932 :
933 605332 : start = NULL;
934 605332 : end = NULL;
935 :
936 605332 : old_loc = gfc_current_locus;
937 :
938 605332 : m = gfc_match_char ('(');
939 605332 : if (m != MATCH_YES)
940 : return MATCH_NO;
941 :
942 15229 : if (gfc_match_char (':') != MATCH_YES)
943 : {
944 14351 : if (init)
945 0 : m = gfc_match_init_expr (&start);
946 : else
947 14351 : m = gfc_match_expr (&start);
948 :
949 14351 : if (m != MATCH_YES)
950 : {
951 154 : m = MATCH_NO;
952 154 : goto cleanup;
953 : }
954 :
955 14197 : m = gfc_match_char (':');
956 14197 : if (m != MATCH_YES)
957 454 : goto cleanup;
958 : }
959 :
960 14621 : if (gfc_match_char (')') != MATCH_YES)
961 : {
962 13692 : if (init)
963 0 : m = gfc_match_init_expr (&end);
964 : else
965 13692 : m = gfc_match_expr (&end);
966 :
967 13692 : if (m == MATCH_NO)
968 2 : goto syntax;
969 13690 : if (m == MATCH_ERROR)
970 0 : goto cleanup;
971 :
972 13690 : m = gfc_match_char (')');
973 13690 : if (m == MATCH_NO)
974 3 : goto syntax;
975 : }
976 :
977 : /* Optimize away the (:) reference. */
978 14616 : if (start == NULL && end == NULL && !deferred)
979 : ref = NULL;
980 : else
981 : {
982 14411 : ref = gfc_get_ref ();
983 :
984 14411 : ref->type = REF_SUBSTRING;
985 14411 : if (start == NULL)
986 671 : start = gfc_get_int_expr (gfc_charlen_int_kind, NULL, 1);
987 14411 : ref->u.ss.start = start;
988 14411 : if (end == NULL && cl)
989 722 : end = gfc_copy_expr (cl->length);
990 14411 : ref->u.ss.end = end;
991 14411 : ref->u.ss.length = cl;
992 : }
993 :
994 14616 : *result = ref;
995 14616 : return MATCH_YES;
996 :
997 5 : syntax:
998 5 : gfc_error ("Syntax error in SUBSTRING specification at %C");
999 5 : m = MATCH_ERROR;
1000 :
1001 613 : cleanup:
1002 613 : gfc_free_expr (start);
1003 613 : gfc_free_expr (end);
1004 :
1005 613 : gfc_current_locus = old_loc;
1006 613 : return m;
1007 : }
1008 :
1009 :
1010 : /* Reads the next character of a string constant, taking care to
1011 : return doubled delimiters on the input as a single instance of
1012 : the delimiter.
1013 :
1014 : Special return values for "ret" argument are:
1015 : -1 End of the string, as determined by the delimiter
1016 : -2 Unterminated string detected
1017 :
1018 : Backslash codes are also expanded at this time. */
1019 :
1020 : static gfc_char_t
1021 4164201 : next_string_char (gfc_char_t delimiter, int *ret)
1022 : {
1023 4164201 : locus old_locus;
1024 4164201 : gfc_char_t c;
1025 :
1026 4164201 : c = gfc_next_char_literal (INSTRING_WARN);
1027 4164201 : *ret = 0;
1028 :
1029 4164201 : if (c == '\n')
1030 : {
1031 4 : *ret = -2;
1032 4 : return 0;
1033 : }
1034 :
1035 4164197 : if (flag_backslash && c == '\\')
1036 : {
1037 12180 : old_locus = gfc_current_locus;
1038 :
1039 12180 : if (gfc_match_special_char (&c) == MATCH_NO)
1040 0 : gfc_current_locus = old_locus;
1041 :
1042 12180 : if (!(gfc_option.allow_std & GFC_STD_GNU) && !inhibit_warnings)
1043 0 : gfc_warning (0, "Extension: backslash character at %C");
1044 : }
1045 :
1046 4164197 : if (c != delimiter)
1047 : return c;
1048 :
1049 602512 : old_locus = gfc_current_locus;
1050 602512 : c = gfc_next_char_literal (NONSTRING);
1051 :
1052 602512 : if (c == delimiter)
1053 : return c;
1054 601694 : gfc_current_locus = old_locus;
1055 :
1056 601694 : *ret = -1;
1057 601694 : return 0;
1058 : }
1059 :
1060 :
1061 : /* Special case of gfc_match_name() that matches a parameter kind name
1062 : before a string constant. This takes case of the weird but legal
1063 : case of:
1064 :
1065 : kind_____'string'
1066 :
1067 : where kind____ is a parameter. gfc_match_name() will happily slurp
1068 : up all the underscores, which leads to problems. If we return
1069 : MATCH_YES, the parse pointer points to the final underscore, which
1070 : is not part of the name. We never return MATCH_ERROR-- errors in
1071 : the name will be detected later. */
1072 :
1073 : static match
1074 4397584 : match_charkind_name (char *name)
1075 : {
1076 4397584 : locus old_loc;
1077 4397584 : char c, peek;
1078 4397584 : int len;
1079 :
1080 4397584 : gfc_gobble_whitespace ();
1081 4397584 : c = gfc_next_ascii_char ();
1082 4397584 : if (!ISALPHA (c))
1083 : return MATCH_NO;
1084 :
1085 3994724 : *name++ = c;
1086 3994724 : len = 1;
1087 :
1088 16205455 : for (;;)
1089 : {
1090 16205455 : old_loc = gfc_current_locus;
1091 16205455 : c = gfc_next_ascii_char ();
1092 :
1093 16205455 : if (c == '_')
1094 : {
1095 521041 : peek = gfc_peek_ascii_char ();
1096 :
1097 521041 : if (peek == '\'' || peek == '\"')
1098 : {
1099 996 : gfc_current_locus = old_loc;
1100 996 : *name = '\0';
1101 996 : return MATCH_YES;
1102 : }
1103 : }
1104 :
1105 16204459 : if (!ISALNUM (c)
1106 4513773 : && c != '_'
1107 3993728 : && (c != '$' || !flag_dollar_ok))
1108 : break;
1109 :
1110 12210731 : *name++ = c;
1111 12210731 : if (++len > GFC_MAX_SYMBOL_LEN)
1112 : break;
1113 : }
1114 :
1115 : return MATCH_NO;
1116 : }
1117 :
1118 :
1119 : /* See if the current input matches a character constant. Lots of
1120 : contortions have to be done to match the kind parameter which comes
1121 : before the actual string. The main consideration is that we don't
1122 : want to error out too quickly. For example, we don't actually do
1123 : any validation of the kinds until we have actually seen a legal
1124 : delimiter. Using match_kind_param() generates errors too quickly. */
1125 :
1126 : static match
1127 7032716 : match_string_constant (gfc_expr **result)
1128 : {
1129 7032716 : char name[GFC_MAX_SYMBOL_LEN + 1], peek;
1130 7032716 : size_t length;
1131 7032716 : int kind,save_warn_ampersand, ret;
1132 7032716 : locus old_locus, start_locus;
1133 7032716 : gfc_symbol *sym;
1134 7032716 : gfc_expr *e;
1135 7032716 : match m;
1136 7032716 : gfc_char_t c, delimiter, *p;
1137 :
1138 7032716 : old_locus = gfc_current_locus;
1139 :
1140 7032716 : gfc_gobble_whitespace ();
1141 :
1142 7032716 : c = gfc_next_char ();
1143 7032716 : if (c == '\'' || c == '"')
1144 : {
1145 260417 : kind = gfc_default_character_kind;
1146 260417 : start_locus = gfc_current_locus;
1147 260417 : goto got_delim;
1148 : }
1149 :
1150 6772299 : if (gfc_wide_is_digit (c))
1151 : {
1152 2374715 : kind = 0;
1153 :
1154 5702795 : while (gfc_wide_is_digit (c))
1155 : {
1156 3341524 : kind = kind * 10 + c - '0';
1157 3341524 : if (kind > 9999999)
1158 13444 : goto no_match;
1159 3328080 : c = gfc_next_char ();
1160 : }
1161 :
1162 : }
1163 : else
1164 : {
1165 4397584 : gfc_current_locus = old_locus;
1166 :
1167 4397584 : m = match_charkind_name (name);
1168 4397584 : if (m != MATCH_YES)
1169 4396588 : goto no_match;
1170 :
1171 996 : if (gfc_find_symbol (name, NULL, 1, &sym)
1172 996 : || sym == NULL
1173 1991 : || sym->attr.flavor != FL_PARAMETER)
1174 1 : goto no_match;
1175 :
1176 995 : kind = -1;
1177 995 : c = gfc_next_char ();
1178 : }
1179 :
1180 2362266 : if (c != '_')
1181 2172990 : goto no_match;
1182 :
1183 189276 : c = gfc_next_char ();
1184 189276 : if (c != '\'' && c != '"')
1185 148827 : goto no_match;
1186 :
1187 40449 : start_locus = gfc_current_locus;
1188 :
1189 40449 : if (kind == -1)
1190 : {
1191 995 : if (gfc_extract_int (sym->value, &kind, 1))
1192 : return MATCH_ERROR;
1193 995 : gfc_set_sym_referenced (sym);
1194 : }
1195 :
1196 40449 : if (gfc_validate_kind (BT_CHARACTER, kind, true) < 0)
1197 : {
1198 0 : gfc_error ("Invalid kind %d for CHARACTER constant at %C", kind);
1199 0 : return MATCH_ERROR;
1200 : }
1201 :
1202 40449 : got_delim:
1203 : /* Scan the string into a block of memory by first figuring out how
1204 : long it is, allocating the structure, then re-reading it. This
1205 : isn't particularly efficient, but string constants aren't that
1206 : common in most code. TODO: Use obstacks? */
1207 :
1208 300866 : delimiter = c;
1209 300866 : length = 0;
1210 :
1211 3863678 : for (;;)
1212 : {
1213 2082272 : c = next_string_char (delimiter, &ret);
1214 2082272 : if (ret == -1)
1215 : break;
1216 1781410 : if (ret == -2)
1217 : {
1218 4 : gfc_current_locus = start_locus;
1219 4 : gfc_error ("Unterminated character constant beginning at %C");
1220 4 : return MATCH_ERROR;
1221 : }
1222 :
1223 1781406 : length++;
1224 : }
1225 :
1226 : /* Peek at the next character to see if it is a b, o, z, or x for the
1227 : postfixed BOZ literal constants. */
1228 300862 : peek = gfc_peek_ascii_char ();
1229 300862 : if (peek == 'b' || peek == 'o' || peek =='z' || peek == 'x')
1230 25 : goto no_match;
1231 :
1232 300837 : e = gfc_get_character_expr (kind, &start_locus, NULL, length);
1233 :
1234 300837 : gfc_current_locus = start_locus;
1235 :
1236 : /* We disable the warning for the following loop as the warning has already
1237 : been printed in the loop above. */
1238 300837 : save_warn_ampersand = warn_ampersand;
1239 300837 : warn_ampersand = false;
1240 :
1241 300837 : p = e->value.character.string;
1242 2081929 : for (size_t i = 0; i < length; i++)
1243 : {
1244 1781097 : c = next_string_char (delimiter, &ret);
1245 :
1246 1781097 : if (!gfc_check_character_range (c, kind))
1247 : {
1248 5 : gfc_free_expr (e);
1249 5 : gfc_error ("Character %qs in string at %C is not representable "
1250 : "in character kind %d", gfc_print_wide_char (c), kind);
1251 5 : return MATCH_ERROR;
1252 : }
1253 :
1254 1781092 : *p++ = c;
1255 : }
1256 :
1257 300832 : *p = '\0'; /* TODO: C-style string is for development/debug purposes. */
1258 300832 : warn_ampersand = save_warn_ampersand;
1259 :
1260 300832 : next_string_char (delimiter, &ret);
1261 300832 : if (ret != -1)
1262 0 : gfc_internal_error ("match_string_constant(): Delimiter not found");
1263 :
1264 300832 : if (match_substring (NULL, 0, &e->ref, false) != MATCH_NO)
1265 306 : e->expr_type = EXPR_SUBSTRING;
1266 :
1267 : /* Substrings with constant starting and ending points are eligible as
1268 : designators (F2018, section 9.1). Simplify substrings to make them usable
1269 : e.g. in data statements. */
1270 300832 : if (e->expr_type == EXPR_SUBSTRING
1271 306 : && e->ref && e->ref->type == REF_SUBSTRING
1272 302 : && e->ref->u.ss.start->expr_type == EXPR_CONSTANT
1273 76 : && (e->ref->u.ss.end == NULL
1274 74 : || e->ref->u.ss.end->expr_type == EXPR_CONSTANT))
1275 : {
1276 74 : gfc_expr *res;
1277 74 : ptrdiff_t istart, iend;
1278 74 : size_t length;
1279 74 : bool equal_length = false;
1280 :
1281 : /* Basic checks on substring starting and ending indices. */
1282 74 : if (!gfc_resolve_substring (e->ref, &equal_length))
1283 6 : return MATCH_ERROR;
1284 :
1285 71 : length = e->value.character.length;
1286 71 : istart = gfc_mpz_get_hwi (e->ref->u.ss.start->value.integer);
1287 71 : if (e->ref->u.ss.end == NULL)
1288 : iend = length;
1289 : else
1290 69 : iend = gfc_mpz_get_hwi (e->ref->u.ss.end->value.integer);
1291 :
1292 71 : if (istart <= iend)
1293 : {
1294 66 : if (istart < 1)
1295 : {
1296 2 : gfc_error ("Substring start index (%td) at %L below 1",
1297 2 : istart, &e->ref->u.ss.start->where);
1298 2 : return MATCH_ERROR;
1299 : }
1300 64 : if (iend > (ssize_t) length)
1301 : {
1302 1 : gfc_error ("Substring end index (%td) at %L exceeds string "
1303 1 : "length", iend, &e->ref->u.ss.end->where);
1304 1 : return MATCH_ERROR;
1305 : }
1306 63 : length = iend - istart + 1;
1307 : }
1308 : else
1309 : length = 0;
1310 :
1311 68 : res = gfc_get_constant_expr (BT_CHARACTER, e->ts.kind, &e->where);
1312 68 : res->value.character.string = gfc_get_wide_string (length + 1);
1313 68 : res->value.character.length = length;
1314 68 : if (length > 0)
1315 63 : memcpy (res->value.character.string,
1316 63 : &e->value.character.string[istart - 1],
1317 : length * sizeof (gfc_char_t));
1318 68 : res->value.character.string[length] = '\0';
1319 68 : e = res;
1320 : }
1321 :
1322 300826 : *result = e;
1323 :
1324 300826 : return MATCH_YES;
1325 :
1326 6731875 : no_match:
1327 6731875 : gfc_current_locus = old_locus;
1328 6731875 : return MATCH_NO;
1329 : }
1330 :
1331 :
1332 : /* Match a .true. or .false. Returns 1 if a .true. was found,
1333 : 0 if a .false. was found, and -1 otherwise. */
1334 : static int
1335 4391408 : match_logical_constant_string (void)
1336 : {
1337 4391408 : locus orig_loc = gfc_current_locus;
1338 :
1339 4391408 : gfc_gobble_whitespace ();
1340 4391408 : if (gfc_next_ascii_char () == '.')
1341 : {
1342 56581 : char ch = gfc_next_ascii_char ();
1343 56581 : if (ch == 'f')
1344 : {
1345 28863 : if (gfc_next_ascii_char () == 'a'
1346 28863 : && gfc_next_ascii_char () == 'l'
1347 28863 : && gfc_next_ascii_char () == 's'
1348 28863 : && gfc_next_ascii_char () == 'e'
1349 57726 : && gfc_next_ascii_char () == '.')
1350 : /* Matched ".false.". */
1351 : return 0;
1352 : }
1353 27718 : else if (ch == 't')
1354 : {
1355 27717 : if (gfc_next_ascii_char () == 'r'
1356 27717 : && gfc_next_ascii_char () == 'u'
1357 27717 : && gfc_next_ascii_char () == 'e'
1358 55434 : && gfc_next_ascii_char () == '.')
1359 : /* Matched ".true.". */
1360 : return 1;
1361 : }
1362 : }
1363 4334828 : gfc_current_locus = orig_loc;
1364 4334828 : return -1;
1365 : }
1366 :
1367 : /* Match a .true. or .false. */
1368 :
1369 : static match
1370 4391408 : match_logical_constant (gfc_expr **result)
1371 : {
1372 4391408 : gfc_expr *e;
1373 4391408 : int i, kind, is_iso_c;
1374 :
1375 4391408 : i = match_logical_constant_string ();
1376 4391408 : if (i == -1)
1377 : return MATCH_NO;
1378 :
1379 56580 : kind = get_kind (&is_iso_c);
1380 56580 : if (kind == -1)
1381 : return MATCH_ERROR;
1382 56580 : if (kind == -2)
1383 56091 : kind = gfc_default_logical_kind;
1384 :
1385 56580 : if (gfc_validate_kind (BT_LOGICAL, kind, true) < 0)
1386 : {
1387 4 : gfc_error ("Bad kind for logical constant at %C");
1388 4 : return MATCH_ERROR;
1389 : }
1390 :
1391 56576 : e = gfc_get_logical_expr (kind, &gfc_current_locus, i);
1392 56576 : e->ts.is_c_interop = is_iso_c;
1393 :
1394 56576 : *result = e;
1395 56576 : return MATCH_YES;
1396 : }
1397 :
1398 :
1399 : /* Match a real or imaginary part of a complex constant that is a
1400 : symbolic constant. */
1401 :
1402 : static match
1403 140586 : match_sym_complex_part (gfc_expr **result)
1404 : {
1405 140586 : char name[GFC_MAX_SYMBOL_LEN + 1];
1406 140586 : gfc_symbol *sym;
1407 140586 : gfc_expr *e;
1408 140586 : match m;
1409 :
1410 140586 : m = gfc_match_name (name);
1411 140586 : if (m != MATCH_YES)
1412 : return m;
1413 :
1414 38734 : if (gfc_find_symbol (name, NULL, 1, &sym) || sym == NULL)
1415 : return MATCH_NO;
1416 :
1417 36078 : if (sym->attr.flavor != FL_PARAMETER)
1418 : {
1419 : /* Give the matcher for implied do-loops a chance to run. This yields
1420 : a much saner error message for "write(*,*) (i, i=1, 6" where the
1421 : right parenthesis is missing. */
1422 34610 : char c;
1423 34610 : gfc_gobble_whitespace ();
1424 34610 : c = gfc_peek_ascii_char ();
1425 34610 : if (c == '=' || c == ',')
1426 : {
1427 : m = MATCH_NO;
1428 : }
1429 : else
1430 : {
1431 31902 : gfc_error ("Expected PARAMETER symbol in complex constant at %C");
1432 31902 : m = MATCH_ERROR;
1433 : }
1434 34610 : return m;
1435 : }
1436 :
1437 1468 : if (!sym->value)
1438 2 : goto error;
1439 :
1440 1466 : if (!gfc_numeric_ts (&sym->value->ts))
1441 : {
1442 331 : gfc_error ("Numeric PARAMETER required in complex constant at %C");
1443 331 : return MATCH_ERROR;
1444 : }
1445 :
1446 1135 : if (sym->value->rank != 0)
1447 : {
1448 174 : gfc_error ("Scalar PARAMETER required in complex constant at %C");
1449 174 : return MATCH_ERROR;
1450 : }
1451 :
1452 961 : if (!gfc_notify_std (GFC_STD_F2003, "PARAMETER symbol in "
1453 : "complex constant at %C"))
1454 : return MATCH_ERROR;
1455 :
1456 958 : switch (sym->value->ts.type)
1457 : {
1458 68 : case BT_REAL:
1459 68 : e = gfc_copy_expr (sym->value);
1460 68 : break;
1461 :
1462 1 : case BT_COMPLEX:
1463 1 : e = gfc_complex2real (sym->value, sym->value->ts.kind);
1464 1 : if (e == NULL)
1465 0 : goto error;
1466 : break;
1467 :
1468 887 : case BT_INTEGER:
1469 887 : e = gfc_int2real (sym->value, gfc_default_real_kind);
1470 887 : if (e == NULL)
1471 0 : goto error;
1472 : break;
1473 :
1474 2 : case BT_UNSIGNED:
1475 2 : goto error;
1476 :
1477 0 : default:
1478 0 : gfc_internal_error ("gfc_match_sym_complex_part(): Bad type");
1479 : }
1480 :
1481 956 : *result = e; /* e is a scalar, real, constant expression. */
1482 956 : return MATCH_YES;
1483 :
1484 4 : error:
1485 4 : gfc_error ("Error converting PARAMETER constant in complex constant at %C");
1486 4 : return MATCH_ERROR;
1487 : }
1488 :
1489 :
1490 : /* Match a real or imaginary part of a complex number. */
1491 :
1492 : static match
1493 140586 : match_complex_part (gfc_expr **result)
1494 : {
1495 140586 : match m;
1496 :
1497 140586 : m = match_sym_complex_part (result);
1498 140586 : if (m != MATCH_NO)
1499 : return m;
1500 :
1501 107216 : m = match_real_constant (result, 1);
1502 107216 : if (m != MATCH_NO)
1503 : return m;
1504 :
1505 92895 : return match_integer_constant (result, 1);
1506 : }
1507 :
1508 :
1509 : /* Try to match a complex constant. */
1510 :
1511 : static match
1512 7042975 : match_complex_constant (gfc_expr **result)
1513 : {
1514 7042975 : gfc_expr *e, *real, *imag;
1515 7042975 : gfc_error_buffer old_error;
1516 7042975 : gfc_typespec target;
1517 7042975 : locus old_loc;
1518 7042975 : int kind;
1519 7042975 : match m;
1520 :
1521 7042975 : old_loc = gfc_current_locus;
1522 7042975 : real = imag = e = NULL;
1523 :
1524 7042975 : m = gfc_match_char ('(');
1525 7042975 : if (m != MATCH_YES)
1526 : return m;
1527 :
1528 130331 : gfc_push_error (&old_error);
1529 :
1530 130331 : m = match_complex_part (&real);
1531 130331 : if (m == MATCH_NO)
1532 : {
1533 74640 : gfc_free_error (&old_error);
1534 74640 : goto cleanup;
1535 : }
1536 :
1537 55691 : if (gfc_match_char (',') == MATCH_NO)
1538 : {
1539 : /* It is possible that gfc_int2real issued a warning when
1540 : converting an integer to real. Throw this away here. */
1541 :
1542 45432 : gfc_clear_warning ();
1543 45432 : gfc_pop_error (&old_error);
1544 45432 : m = MATCH_NO;
1545 45432 : goto cleanup;
1546 : }
1547 :
1548 : /* If m is error, then something was wrong with the real part and we
1549 : assume we have a complex constant because we've seen the ','. An
1550 : ambiguous case here is the start of an iterator list of some
1551 : sort. These sort of lists are matched prior to coming here. */
1552 :
1553 10259 : if (m == MATCH_ERROR)
1554 : {
1555 4 : gfc_free_error (&old_error);
1556 4 : goto cleanup;
1557 : }
1558 10255 : gfc_pop_error (&old_error);
1559 :
1560 10255 : m = match_complex_part (&imag);
1561 10255 : if (m == MATCH_NO)
1562 3122 : goto syntax;
1563 7133 : if (m == MATCH_ERROR)
1564 133 : goto cleanup;
1565 :
1566 7000 : m = gfc_match_char (')');
1567 7000 : if (m == MATCH_NO)
1568 : {
1569 : /* Give the matcher for implied do-loops a chance to run. This
1570 : yields a much saner error message for (/ (i, 4=i, 6) /). */
1571 13 : if (gfc_peek_ascii_char () == '=')
1572 : {
1573 0 : m = MATCH_ERROR;
1574 0 : goto cleanup;
1575 : }
1576 : else
1577 13 : goto syntax;
1578 : }
1579 :
1580 6987 : if (m == MATCH_ERROR)
1581 0 : goto cleanup;
1582 :
1583 : /* Decide on the kind of this complex number. */
1584 6987 : if (real->ts.type == BT_REAL)
1585 : {
1586 6553 : if (imag->ts.type == BT_REAL)
1587 6528 : kind = gfc_kind_max (real, imag);
1588 : else
1589 25 : kind = real->ts.kind;
1590 : }
1591 : else
1592 : {
1593 434 : if (imag->ts.type == BT_REAL)
1594 7 : kind = imag->ts.kind;
1595 : else
1596 427 : kind = gfc_default_real_kind;
1597 : }
1598 6987 : gfc_clear_ts (&target);
1599 6987 : target.type = BT_REAL;
1600 6987 : target.kind = kind;
1601 :
1602 6987 : if (real->ts.type != BT_REAL || kind != real->ts.kind)
1603 435 : gfc_convert_type (real, &target, 2);
1604 6987 : if (imag->ts.type != BT_REAL || kind != imag->ts.kind)
1605 490 : gfc_convert_type (imag, &target, 2);
1606 :
1607 6987 : e = convert_complex (real, imag, kind);
1608 6987 : e->where = gfc_current_locus;
1609 :
1610 6987 : gfc_free_expr (real);
1611 6987 : gfc_free_expr (imag);
1612 :
1613 6987 : *result = e;
1614 6987 : return MATCH_YES;
1615 :
1616 3135 : syntax:
1617 3135 : gfc_error ("Syntax error in COMPLEX constant at %C");
1618 3135 : m = MATCH_ERROR;
1619 :
1620 123344 : cleanup:
1621 123344 : gfc_free_expr (e);
1622 123344 : gfc_free_expr (real);
1623 123344 : gfc_free_expr (imag);
1624 123344 : gfc_current_locus = old_loc;
1625 :
1626 123344 : return m;
1627 7042975 : }
1628 :
1629 :
1630 : /* Match constants in any of several forms. Returns nonzero for a
1631 : match, zero for no match. */
1632 :
1633 : match
1634 7042975 : gfc_match_literal_constant (gfc_expr **result, int signflag)
1635 : {
1636 7042975 : match m;
1637 :
1638 7042975 : m = match_complex_constant (result);
1639 7042975 : if (m != MATCH_NO)
1640 : return m;
1641 :
1642 7032716 : m = match_string_constant (result);
1643 7032716 : if (m != MATCH_NO)
1644 : return m;
1645 :
1646 6731875 : m = match_boz_constant (result);
1647 6731875 : if (m != MATCH_NO)
1648 : return m;
1649 :
1650 6727715 : m = match_real_constant (result, signflag);
1651 6727715 : if (m != MATCH_NO)
1652 : return m;
1653 :
1654 6524411 : m = match_hollerith_constant (result);
1655 6524411 : if (m != MATCH_NO)
1656 : return m;
1657 :
1658 6521775 : if (flag_unsigned)
1659 : {
1660 588996 : m = match_unsigned_constant (result);
1661 588996 : if (m != MATCH_NO)
1662 : return m;
1663 : }
1664 :
1665 6420403 : m = match_integer_constant (result, signflag);
1666 6420403 : if (m != MATCH_NO)
1667 : return m;
1668 :
1669 4391408 : m = match_logical_constant (result);
1670 4391408 : if (m != MATCH_NO)
1671 : return m;
1672 :
1673 : return MATCH_NO;
1674 : }
1675 :
1676 :
1677 : /* This checks if a symbol is the return value of an encompassing function.
1678 : Function nesting can be maximally two levels deep, but we may have
1679 : additional local namespaces like BLOCK etc. */
1680 :
1681 : bool
1682 774437 : gfc_is_function_return_value (gfc_symbol *sym, gfc_namespace *ns)
1683 : {
1684 774437 : if (!sym->attr.function || (sym->result != sym))
1685 : return false;
1686 1623946 : while (ns)
1687 : {
1688 919648 : if (ns->proc_name == sym)
1689 : return true;
1690 908048 : ns = ns->parent;
1691 : }
1692 : return false;
1693 : }
1694 :
1695 :
1696 : /* Match a single actual argument value. An actual argument is
1697 : usually an expression, but can also be a procedure name. If the
1698 : argument is a single name, it is not always possible to tell
1699 : whether the name is a dummy procedure or not. We treat these cases
1700 : by creating an argument that looks like a dummy procedure and
1701 : fixing things later during resolution. */
1702 :
1703 : static match
1704 1999128 : match_actual_arg (gfc_expr **result)
1705 : {
1706 1999128 : char name[GFC_MAX_SYMBOL_LEN + 1];
1707 1999128 : gfc_symtree *symtree;
1708 1999128 : locus where, w;
1709 1999128 : gfc_expr *e;
1710 1999128 : char c;
1711 :
1712 1999128 : gfc_gobble_whitespace ();
1713 1999128 : where = gfc_current_locus;
1714 :
1715 1999128 : switch (gfc_match_name (name))
1716 : {
1717 : case MATCH_ERROR:
1718 : return MATCH_ERROR;
1719 :
1720 : case MATCH_NO:
1721 : break;
1722 :
1723 1303713 : case MATCH_YES:
1724 1303713 : w = gfc_current_locus;
1725 1303713 : gfc_gobble_whitespace ();
1726 1303713 : c = gfc_next_ascii_char ();
1727 1303713 : gfc_current_locus = w;
1728 :
1729 1303713 : if (c != ',' && c != ')')
1730 : break;
1731 :
1732 685529 : if (gfc_find_sym_tree (name, NULL, 1, &symtree))
1733 : break;
1734 : /* Handle error elsewhere. */
1735 :
1736 : /* Eliminate a couple of common cases where we know we don't
1737 : have a function argument. */
1738 685529 : if (symtree == NULL)
1739 : {
1740 13958 : gfc_get_sym_tree (name, NULL, &symtree, false);
1741 13958 : gfc_set_sym_referenced (symtree->n.sym);
1742 : }
1743 : else
1744 : {
1745 671571 : gfc_symbol *sym;
1746 :
1747 671571 : sym = symtree->n.sym;
1748 671571 : gfc_set_sym_referenced (sym);
1749 671571 : if (sym->attr.flavor == FL_NAMELIST)
1750 : {
1751 1121 : gfc_error ("Namelist %qs cannot be an argument at %L",
1752 : sym->name, &where);
1753 1121 : break;
1754 : }
1755 670450 : if (sym->attr.flavor != FL_PROCEDURE
1756 633862 : && sym->attr.flavor != FL_UNKNOWN)
1757 : break;
1758 :
1759 188346 : if (sym->attr.in_common && !sym->attr.proc_pointer)
1760 : {
1761 224 : if (!gfc_add_flavor (&sym->attr, FL_VARIABLE,
1762 : sym->name, &sym->declared_at))
1763 : return MATCH_ERROR;
1764 : break;
1765 : }
1766 :
1767 : /* If the symbol is a function with itself as the result and
1768 : is being defined, then we have a variable. */
1769 188122 : if (sym->attr.function && sym->result == sym)
1770 : {
1771 3401 : if (gfc_is_function_return_value (sym, gfc_current_ns))
1772 : break;
1773 :
1774 2747 : if (sym->attr.entry
1775 55 : && (sym->ns == gfc_current_ns
1776 2 : || sym->ns == gfc_current_ns->parent))
1777 : {
1778 54 : gfc_entry_list *el = NULL;
1779 :
1780 54 : for (el = sym->ns->entries; el; el = el->next)
1781 54 : if (sym == el->sym)
1782 : break;
1783 :
1784 54 : if (el)
1785 : break;
1786 : }
1787 : }
1788 : }
1789 :
1790 201372 : e = gfc_get_expr (); /* Leave it unknown for now */
1791 201372 : e->symtree = symtree;
1792 201372 : e->expr_type = EXPR_VARIABLE;
1793 201372 : e->ts.type = BT_PROCEDURE;
1794 201372 : e->where = where;
1795 :
1796 201372 : *result = e;
1797 201372 : return MATCH_YES;
1798 : }
1799 :
1800 1797756 : gfc_current_locus = where;
1801 1797756 : return gfc_match_expr (result);
1802 : }
1803 :
1804 :
1805 : /* Match a keyword argument or type parameter spec list.. */
1806 :
1807 : static match
1808 1991045 : match_keyword_arg (gfc_actual_arglist *actual, gfc_actual_arglist *base, bool pdt)
1809 : {
1810 1991045 : char name[GFC_MAX_SYMBOL_LEN + 1];
1811 1991045 : gfc_actual_arglist *a;
1812 1991045 : locus name_locus;
1813 1991045 : match m;
1814 :
1815 1991045 : name_locus = gfc_current_locus;
1816 1991045 : m = gfc_match_name (name);
1817 :
1818 1991045 : if (m != MATCH_YES)
1819 586322 : goto cleanup;
1820 1404723 : if (gfc_match_char ('=') != MATCH_YES)
1821 : {
1822 1245039 : m = MATCH_NO;
1823 1245039 : goto cleanup;
1824 : }
1825 :
1826 159684 : if (pdt)
1827 : {
1828 447 : if (gfc_match_char ('*') == MATCH_YES)
1829 : {
1830 82 : actual->spec_type = SPEC_ASSUMED;
1831 82 : goto add_name;
1832 : }
1833 365 : else if (gfc_match_char (':') == MATCH_YES)
1834 : {
1835 52 : actual->spec_type = SPEC_DEFERRED;
1836 52 : goto add_name;
1837 : }
1838 : else
1839 313 : actual->spec_type = SPEC_EXPLICIT;
1840 : }
1841 :
1842 159550 : m = match_actual_arg (&actual->expr);
1843 159550 : if (m != MATCH_YES)
1844 11182 : goto cleanup;
1845 :
1846 : /* Make sure this name has not appeared yet. */
1847 148368 : add_name:
1848 148502 : if (name[0] != '\0')
1849 : {
1850 476682 : for (a = base; a; a = a->next)
1851 328194 : if (a->name != NULL && strcmp (a->name, name) == 0)
1852 : {
1853 14 : gfc_error ("Keyword %qs at %C has already appeared in the "
1854 : "current argument list", name);
1855 14 : return MATCH_ERROR;
1856 : }
1857 : }
1858 :
1859 148488 : actual->name = gfc_get_string ("%s", name);
1860 148488 : return MATCH_YES;
1861 :
1862 1842543 : cleanup:
1863 1842543 : gfc_current_locus = name_locus;
1864 1842543 : return m;
1865 : }
1866 :
1867 :
1868 : /* Match an argument list function, such as %VAL. */
1869 :
1870 : static match
1871 1952456 : match_arg_list_function (gfc_actual_arglist *result)
1872 : {
1873 1952456 : char name[GFC_MAX_SYMBOL_LEN + 1];
1874 1952456 : locus old_locus;
1875 1952456 : match m;
1876 :
1877 1952456 : old_locus = gfc_current_locus;
1878 :
1879 1952456 : if (gfc_match_char ('%') != MATCH_YES)
1880 : {
1881 1952391 : m = MATCH_NO;
1882 1952391 : goto cleanup;
1883 : }
1884 :
1885 65 : m = gfc_match ("%n (", name);
1886 65 : if (m != MATCH_YES)
1887 0 : goto cleanup;
1888 :
1889 65 : if (name[0] != '\0')
1890 : {
1891 65 : switch (name[0])
1892 : {
1893 16 : case 'l':
1894 16 : if (startswith (name, "loc"))
1895 : {
1896 16 : result->name = "%LOC";
1897 16 : break;
1898 : }
1899 : /* FALLTHRU */
1900 12 : case 'r':
1901 12 : if (startswith (name, "ref"))
1902 : {
1903 12 : result->name = "%REF";
1904 12 : break;
1905 : }
1906 : /* FALLTHRU */
1907 37 : case 'v':
1908 37 : if (startswith (name, "val"))
1909 : {
1910 37 : result->name = "%VAL";
1911 37 : break;
1912 : }
1913 : /* FALLTHRU */
1914 0 : default:
1915 0 : m = MATCH_ERROR;
1916 0 : goto cleanup;
1917 : }
1918 : }
1919 :
1920 65 : if (!gfc_notify_std (GFC_STD_GNU, "argument list function at %C"))
1921 : {
1922 1 : m = MATCH_ERROR;
1923 1 : goto cleanup;
1924 : }
1925 :
1926 64 : m = match_actual_arg (&result->expr);
1927 64 : if (m != MATCH_YES)
1928 0 : goto cleanup;
1929 :
1930 64 : if (gfc_match_char (')') != MATCH_YES)
1931 : {
1932 0 : m = MATCH_NO;
1933 0 : goto cleanup;
1934 : }
1935 :
1936 : return MATCH_YES;
1937 :
1938 1952392 : cleanup:
1939 1952392 : gfc_current_locus = old_locus;
1940 1952392 : return m;
1941 : }
1942 :
1943 :
1944 : /* Matches an actual argument list of a function or subroutine, from
1945 : the opening parenthesis to the closing parenthesis. The argument
1946 : list is assumed to allow keyword arguments because we don't know if
1947 : the symbol associated with the procedure has an implicit interface
1948 : or not. We make sure keywords are unique. If sub_flag is set,
1949 : we're matching the argument list of a subroutine.
1950 :
1951 : NOTE: An alternative use for this function is to match type parameter
1952 : spec lists, which are so similar to actual argument lists that the
1953 : machinery can be reused. This use is flagged by the optional argument
1954 : 'pdt'. */
1955 :
1956 : match
1957 2061612 : gfc_match_actual_arglist (int sub_flag, gfc_actual_arglist **argp, bool pdt)
1958 : {
1959 2061612 : gfc_actual_arglist *head, *tail;
1960 2061612 : int seen_keyword;
1961 2061612 : gfc_st_label *label;
1962 2061612 : locus old_loc;
1963 2061612 : match m;
1964 :
1965 2061612 : *argp = tail = NULL;
1966 2061612 : old_loc = gfc_current_locus;
1967 :
1968 2061612 : seen_keyword = 0;
1969 :
1970 2061612 : if (gfc_match_char ('(') == MATCH_NO)
1971 1215284 : return (sub_flag) ? MATCH_YES : MATCH_NO;
1972 :
1973 1437475 : if (gfc_match_char (')') == MATCH_YES)
1974 : return MATCH_YES;
1975 :
1976 1410216 : head = NULL;
1977 :
1978 1410216 : matching_actual_arglist++;
1979 :
1980 1990626 : for (;;)
1981 : {
1982 1990626 : if (head == NULL)
1983 1410216 : head = tail = gfc_get_actual_arglist ();
1984 : else
1985 : {
1986 580410 : tail->next = gfc_get_actual_arglist ();
1987 580410 : tail = tail->next;
1988 : }
1989 :
1990 1990626 : if (sub_flag && !pdt && gfc_match_char ('*') == MATCH_YES)
1991 : {
1992 238 : m = gfc_match_st_label (&label);
1993 238 : if (m == MATCH_NO)
1994 0 : gfc_error ("Expected alternate return label at %C");
1995 238 : if (m != MATCH_YES)
1996 0 : goto cleanup;
1997 :
1998 238 : if (!gfc_notify_std (GFC_STD_F95_OBS, "Alternate-return argument "
1999 : "at %C"))
2000 0 : goto cleanup;
2001 :
2002 238 : tail->label = label;
2003 238 : goto next;
2004 : }
2005 :
2006 1990388 : if (pdt && !seen_keyword)
2007 : {
2008 1442 : if (gfc_match_char (':') == MATCH_YES)
2009 : {
2010 81 : tail->spec_type = SPEC_DEFERRED;
2011 81 : goto next;
2012 : }
2013 1361 : else if (gfc_match_char ('*') == MATCH_YES)
2014 : {
2015 116 : tail->spec_type = SPEC_ASSUMED;
2016 116 : goto next;
2017 : }
2018 : else
2019 1245 : tail->spec_type = SPEC_EXPLICIT;
2020 :
2021 1245 : m = match_keyword_arg (tail, head, pdt);
2022 1245 : if (m == MATCH_YES)
2023 : {
2024 326 : seen_keyword = 1;
2025 326 : goto next;
2026 : }
2027 919 : if (m == MATCH_ERROR)
2028 0 : goto cleanup;
2029 : }
2030 :
2031 : /* After the first keyword argument is seen, the following
2032 : arguments must also have keywords. */
2033 1989865 : if (seen_keyword)
2034 : {
2035 37409 : m = match_keyword_arg (tail, head, pdt);
2036 :
2037 37409 : if (m == MATCH_ERROR)
2038 34 : goto cleanup;
2039 37375 : if (m == MATCH_NO)
2040 : {
2041 1368 : gfc_error ("Missing keyword name in actual argument list at %C");
2042 1368 : goto cleanup;
2043 : }
2044 :
2045 : }
2046 : else
2047 : {
2048 : /* Try an argument list function, like %VAL. */
2049 1952456 : m = match_arg_list_function (tail);
2050 1952456 : if (m == MATCH_ERROR)
2051 1 : goto cleanup;
2052 :
2053 : /* See if we have the first keyword argument. */
2054 1952455 : if (m == MATCH_NO)
2055 : {
2056 1952391 : m = match_keyword_arg (tail, head, false);
2057 1952391 : if (m == MATCH_YES)
2058 : seen_keyword = 1;
2059 1840236 : if (m == MATCH_ERROR)
2060 722 : goto cleanup;
2061 : }
2062 :
2063 1951669 : if (m == MATCH_NO)
2064 : {
2065 : /* Try for a non-keyword argument. */
2066 1839514 : m = match_actual_arg (&tail->expr);
2067 1839514 : if (m == MATCH_ERROR)
2068 1912 : goto cleanup;
2069 1837602 : if (m == MATCH_NO)
2070 19754 : goto syntax;
2071 : }
2072 : }
2073 :
2074 : /* PDT kind expressions are acceptable as initialization expressions.
2075 : However, intrinsics with a KIND argument reject them. Convert the
2076 : expression now by use of the component initializer. */
2077 1966074 : if (tail->expr
2078 1965991 : && tail->expr->expr_type == EXPR_VARIABLE
2079 3932065 : && gfc_expr_attr (tail->expr).pdt_kind)
2080 : {
2081 308 : gfc_ref *ref;
2082 308 : gfc_expr *tmp = NULL;
2083 330 : for (ref = tail->expr->ref; ref; ref = ref->next)
2084 22 : if (!ref->next && ref->type == REF_COMPONENT
2085 22 : && ref->u.c.component->attr.pdt_kind
2086 22 : && ref->u.c.component->initializer)
2087 22 : tmp = gfc_copy_expr (ref->u.c.component->initializer);
2088 308 : if (tmp)
2089 22 : gfc_replace_expr (tail->expr, tmp);
2090 : }
2091 :
2092 1966835 : next:
2093 1966835 : if (gfc_match_char (')') == MATCH_YES)
2094 : break;
2095 588911 : if (gfc_match_char (',') != MATCH_YES)
2096 8501 : goto syntax;
2097 : }
2098 :
2099 1377924 : *argp = head;
2100 1377924 : matching_actual_arglist--;
2101 1377924 : return MATCH_YES;
2102 :
2103 28255 : syntax:
2104 28255 : gfc_error ("Syntax error in argument list at %C");
2105 :
2106 32292 : cleanup:
2107 32292 : gfc_free_actual_arglist (head);
2108 32292 : gfc_current_locus = old_loc;
2109 32292 : matching_actual_arglist--;
2110 32292 : return MATCH_ERROR;
2111 : }
2112 :
2113 :
2114 : /* Used by gfc_match_varspec() to extend the reference list by one
2115 : element. */
2116 :
2117 : static gfc_ref *
2118 732614 : extend_ref (gfc_expr *primary, gfc_ref *tail)
2119 : {
2120 732614 : if (primary->ref == NULL)
2121 667263 : primary->ref = tail = gfc_get_ref ();
2122 65351 : else if (tail == NULL)
2123 : {
2124 : /* Set tail to end of reference chain. */
2125 23 : for (gfc_ref *ref = primary->ref; ref; ref = ref->next)
2126 23 : if (ref->next == NULL)
2127 : {
2128 : tail = ref;
2129 : break;
2130 : }
2131 : }
2132 : else
2133 : {
2134 65337 : tail->next = gfc_get_ref ();
2135 65337 : tail = tail->next;
2136 : }
2137 :
2138 732614 : return tail;
2139 : }
2140 :
2141 :
2142 : /* Used by gfc_match_varspec() to match an inquiry reference. */
2143 :
2144 : bool
2145 4118 : is_inquiry_ref (const char *name, gfc_ref **ref)
2146 : {
2147 4118 : inquiry_type type;
2148 :
2149 4118 : if (name == NULL)
2150 : return false;
2151 :
2152 4118 : if (ref) *ref = NULL;
2153 :
2154 4118 : if (strcmp (name, "re") == 0)
2155 : type = INQUIRY_RE;
2156 2769 : else if (strcmp (name, "im") == 0)
2157 : type = INQUIRY_IM;
2158 1887 : else if (strcmp (name, "kind") == 0)
2159 : type = INQUIRY_KIND;
2160 1380 : else if (strcmp (name, "len") == 0)
2161 : type = INQUIRY_LEN;
2162 : else
2163 : return false;
2164 :
2165 3180 : if (ref)
2166 : {
2167 1797 : *ref = gfc_get_ref ();
2168 1797 : (*ref)->type = REF_INQUIRY;
2169 1797 : (*ref)->u.i = type;
2170 : }
2171 :
2172 : return true;
2173 : }
2174 :
2175 :
2176 : /* Check to see if functions in operator expressions can be resolved now. */
2177 :
2178 : static bool
2179 126 : resolvable_fcns (gfc_expr *e,
2180 : gfc_symbol *sym ATTRIBUTE_UNUSED,
2181 : int *f ATTRIBUTE_UNUSED)
2182 : {
2183 126 : bool p;
2184 126 : gfc_symbol *s;
2185 :
2186 126 : if (e->expr_type != EXPR_FUNCTION)
2187 : return false;
2188 :
2189 54 : s = e && e->symtree && e->symtree->n.sym ? e->symtree->n.sym : NULL;
2190 54 : p = s && (s->attr.use_assoc
2191 54 : || s->attr.host_assoc
2192 54 : || s->attr.if_source == IFSRC_DECL
2193 54 : || s->attr.proc == PROC_INTRINSIC
2194 24 : || gfc_is_intrinsic (s, 0, e->where));
2195 54 : return !p;
2196 : }
2197 :
2198 :
2199 : /* Match any additional specifications associated with the current
2200 : variable like member references or substrings. If equiv_flag is
2201 : set we only match stuff that is allowed inside an EQUIVALENCE
2202 : statement. sub_flag tells whether we expect a type-bound procedure found
2203 : to be a subroutine as part of CALL or a FUNCTION. For procedure pointer
2204 : components, 'ppc_arg' determines whether the PPC may be called (with an
2205 : argument list), or whether it may just be referred to as a pointer. */
2206 :
2207 : match
2208 5032673 : gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag,
2209 : bool ppc_arg)
2210 : {
2211 5032673 : char name[GFC_MAX_SYMBOL_LEN + 1];
2212 5032673 : gfc_ref *substring, *tail, *tmp;
2213 5032673 : gfc_component *component = NULL;
2214 5032673 : gfc_component *previous = NULL;
2215 5032673 : gfc_symbol *sym = primary->symtree->n.sym;
2216 5032673 : gfc_expr *tgt_expr = NULL;
2217 5032673 : match m;
2218 5032673 : bool unknown;
2219 5032673 : bool inquiry;
2220 5032673 : bool intrinsic;
2221 5032673 : bool inferred_type;
2222 5032673 : locus old_loc;
2223 5032673 : char peeked_char;
2224 :
2225 5032673 : tail = NULL;
2226 :
2227 5032673 : gfc_gobble_whitespace ();
2228 :
2229 5032673 : if (gfc_peek_ascii_char () == '[')
2230 : {
2231 3209 : if ((sym->ts.type != BT_CLASS && sym->attr.dimension)
2232 3209 : || (sym->ts.type == BT_CLASS && CLASS_DATA (sym)
2233 135 : && CLASS_DATA (sym)->attr.dimension))
2234 : {
2235 0 : gfc_error ("Array section designator, e.g. %<(:)%>, is required "
2236 : "besides the coarray designator %<[...]%> at %C");
2237 0 : return MATCH_ERROR;
2238 : }
2239 3209 : if ((sym->ts.type != BT_CLASS && !sym->attr.codimension)
2240 3208 : || (sym->ts.type == BT_CLASS && CLASS_DATA (sym)
2241 135 : && !CLASS_DATA (sym)->attr.codimension))
2242 : {
2243 1 : gfc_error ("Coarray designator at %C but %qs is not a coarray",
2244 : sym->name);
2245 1 : return MATCH_ERROR;
2246 : }
2247 : }
2248 :
2249 5032672 : if (sym->assoc && sym->assoc->target)
2250 5032672 : tgt_expr = sym->assoc->target;
2251 :
2252 5032672 : inferred_type = IS_INFERRED_TYPE (primary);
2253 :
2254 : /* SELECT TYPE temporaries within an ASSOCIATE block, whose selector has not
2255 : been parsed, can generate errors with array refs.. The SELECT TYPE
2256 : namespace is marked with 'assoc_name_inferred'. During resolution, this is
2257 : detected and gfc_fixup_inferred_type_refs is called. */
2258 5031797 : if (!inferred_type
2259 5031797 : && sym->attr.select_type_temporary
2260 23376 : && sym->ns->assoc_name_inferred
2261 344 : && !sym->attr.select_rank_temporary)
2262 1219 : inferred_type = true;
2263 :
2264 : /* Try to resolve a typebound generic procedure so that the associate name
2265 : has a chance to get a type before being used in a second, nested associate
2266 : statement. Note that a copy is used for resolution so that failure does
2267 : not result in a mutilated selector expression further down the line. */
2268 6610 : if (tgt_expr && !sym->assoc->dangling
2269 6610 : && tgt_expr->ts.type == BT_UNKNOWN
2270 1783 : && tgt_expr->symtree
2271 1348 : && tgt_expr->symtree->n.sym
2272 5032745 : && gfc_expr_attr (tgt_expr).generic
2273 5032745 : && ((sym->ts.type == BT_DERIVED && sym->ts.u.derived->attr.pdt_template)
2274 72 : || (sym->ts.type == BT_CLASS
2275 0 : && CLASS_DATA (sym)->ts.u.derived->attr.pdt_template)))
2276 : {
2277 1 : gfc_expr *cpy = gfc_copy_expr (tgt_expr);
2278 1 : if (gfc_resolve_expr (cpy)
2279 1 : && cpy->ts.type != BT_UNKNOWN)
2280 : {
2281 1 : gfc_replace_expr (tgt_expr, cpy);
2282 1 : sym->ts = tgt_expr->ts;
2283 : }
2284 : else
2285 0 : gfc_free_expr (cpy);
2286 1 : if (gfc_expr_attr (tgt_expr).generic)
2287 5032672 : inferred_type = true;
2288 : }
2289 :
2290 : /* For associate names, we may not yet know whether they are arrays or not.
2291 : If the selector expression is unambiguously an array; eg. a full array
2292 : or an array section, then the associate name must be an array and we can
2293 : fix it now. Otherwise, if parentheses follow and it is not a character
2294 : type, we have to assume that it actually is one for now. The final
2295 : decision will be made at resolution, of course. */
2296 5032672 : if (sym->assoc
2297 29986 : && gfc_peek_ascii_char () == '('
2298 9562 : && sym->ts.type != BT_CLASS
2299 5042093 : && !sym->attr.dimension)
2300 : {
2301 386 : gfc_ref *ref = NULL;
2302 :
2303 386 : if (!sym->assoc->dangling && tgt_expr)
2304 : {
2305 326 : if (tgt_expr->expr_type == EXPR_VARIABLE)
2306 21 : gfc_resolve_expr (tgt_expr);
2307 :
2308 326 : ref = tgt_expr->ref;
2309 340 : for (; ref; ref = ref->next)
2310 14 : if (ref->type == REF_ARRAY
2311 7 : && (ref->u.ar.type == AR_FULL
2312 7 : || ref->u.ar.type == AR_SECTION))
2313 : break;
2314 : }
2315 :
2316 386 : if (ref || (!(sym->assoc->dangling || sym->ts.type == BT_CHARACTER)
2317 260 : && sym->assoc->st
2318 260 : && sym->assoc->st->n.sym
2319 260 : && sym->assoc->st->n.sym->attr.dimension == 0))
2320 : {
2321 260 : sym->attr.dimension = 1;
2322 260 : if (sym->as == NULL
2323 260 : && sym->assoc->st
2324 260 : && sym->assoc->st->n.sym
2325 260 : && sym->assoc->st->n.sym->as)
2326 0 : sym->as = gfc_copy_array_spec (sym->assoc->st->n.sym->as);
2327 : }
2328 : }
2329 5032286 : else if (sym->ts.type == BT_CLASS
2330 43826 : && !(sym->assoc && sym->assoc->ar)
2331 43754 : && tgt_expr
2332 266 : && tgt_expr->expr_type == EXPR_VARIABLE
2333 140 : && sym->ts.u.derived != tgt_expr->ts.u.derived)
2334 : {
2335 19 : gfc_resolve_expr (tgt_expr);
2336 19 : if (tgt_expr->rank)
2337 0 : sym->ts.u.derived = tgt_expr->ts.u.derived;
2338 : }
2339 :
2340 5032672 : peeked_char = gfc_peek_ascii_char ();
2341 1219 : if ((inferred_type && !sym->as && peeked_char == '(')
2342 5032451 : || (equiv_flag && peeked_char == '(') || peeked_char == '['
2343 5027672 : || sym->attr.codimension
2344 5010102 : || (sym->attr.dimension && sym->ts.type != BT_CLASS
2345 627297 : && !sym->attr.proc_pointer && !gfc_is_proc_ptr_comp (primary)
2346 627282 : && !(gfc_matching_procptr_assignment
2347 32 : && sym->attr.flavor == FL_PROCEDURE))
2348 9415512 : || (sym->ts.type == BT_CLASS && sym->attr.class_ok
2349 43643 : && sym->ts.u.derived && CLASS_DATA (sym)
2350 43639 : && (CLASS_DATA (sym)->attr.dimension
2351 26688 : || CLASS_DATA (sym)->attr.codimension)))
2352 : {
2353 667266 : gfc_array_spec *as;
2354 20643 : bool coarray_only = sym->attr.codimension && !sym->attr.dimension
2355 677741 : && sym->ts.type == BT_CHARACTER;
2356 667266 : gfc_ref *ref, *strarr = NULL;
2357 :
2358 667266 : tail = extend_ref (primary, tail);
2359 667266 : if (sym->ts.type == BT_CHARACTER && tail->type == REF_SUBSTRING)
2360 : {
2361 3 : gcc_assert (sym->attr.dimension);
2362 : /* Find array reference for substrings of character arrays. */
2363 3 : for (ref = primary->ref; ref && ref->next; ref = ref->next)
2364 3 : if (ref->type == REF_ARRAY && ref->next->type == REF_SUBSTRING)
2365 : {
2366 : strarr = ref;
2367 : break;
2368 : }
2369 : }
2370 : else
2371 667263 : tail->type = REF_ARRAY;
2372 :
2373 : /* In EQUIVALENCE, we don't know yet whether we are seeing
2374 : an array, character variable or array of character
2375 : variables. We'll leave the decision till resolve time. */
2376 :
2377 667266 : if (equiv_flag)
2378 : as = NULL;
2379 665265 : else if (sym->ts.type == BT_CLASS && CLASS_DATA (sym))
2380 17570 : as = CLASS_DATA (sym)->as;
2381 : else
2382 647695 : as = sym->as;
2383 :
2384 667266 : ref = strarr ? strarr : tail;
2385 667266 : m = gfc_match_array_ref (&ref->u.ar, as, equiv_flag, as ? as->corank : 0,
2386 : coarray_only);
2387 667266 : if (m != MATCH_YES)
2388 : return m;
2389 :
2390 667174 : gfc_gobble_whitespace ();
2391 667174 : if (coarray_only)
2392 : {
2393 2011 : primary->ts = sym->ts;
2394 2011 : goto check_substring;
2395 : }
2396 :
2397 665163 : if (equiv_flag && gfc_peek_ascii_char () == '(')
2398 : {
2399 74 : tail = extend_ref (primary, tail);
2400 74 : tail->type = REF_ARRAY;
2401 :
2402 74 : m = gfc_match_array_ref (&tail->u.ar, NULL, equiv_flag, 0);
2403 74 : if (m != MATCH_YES)
2404 : return m;
2405 : }
2406 : }
2407 :
2408 5030569 : primary->ts = sym->ts;
2409 :
2410 5030569 : if (equiv_flag)
2411 : return MATCH_YES;
2412 :
2413 : /* With DEC extensions, member separator may be '.' or '%'. */
2414 5027623 : peeked_char = gfc_peek_ascii_char ();
2415 5027623 : m = gfc_match_member_sep (sym);
2416 5027623 : if (m == MATCH_ERROR)
2417 : return MATCH_ERROR;
2418 :
2419 5027622 : inquiry = false;
2420 5027622 : if (m == MATCH_YES && peeked_char == '%' && primary->ts.type != BT_CLASS
2421 130623 : && (primary->ts.type != BT_DERIVED || inferred_type))
2422 : {
2423 2316 : match mm;
2424 2316 : old_loc = gfc_current_locus;
2425 2316 : mm = gfc_match_name (name);
2426 :
2427 : /* Check to see if this has a default complex. */
2428 483 : if (sym->ts.type == BT_UNKNOWN && tgt_expr == NULL
2429 2334 : && gfc_get_default_type (sym->name, sym->ns)->type != BT_UNKNOWN)
2430 : {
2431 6 : gfc_set_default_type (sym, 0, sym->ns);
2432 6 : primary->ts = sym->ts;
2433 : }
2434 :
2435 : /* This is a usable inquiry reference, if the symbol is already known
2436 : to have a type or no derived types with a component of this name
2437 : can be found. If this was an inquiry reference with the same name
2438 : as a derived component and the associate-name type is not derived
2439 : or class, this is fixed up in 'gfc_fixup_inferred_type_refs'. */
2440 2316 : if (mm == MATCH_YES && is_inquiry_ref (name, NULL)
2441 3909 : && !(sym->ts.type == BT_UNKNOWN
2442 210 : && gfc_find_derived_types (sym, gfc_current_ns, name)))
2443 : inquiry = true;
2444 2316 : gfc_current_locus = old_loc;
2445 : }
2446 :
2447 : /* Use the default type if there is one. */
2448 2653263 : if (sym->ts.type == BT_UNKNOWN && m == MATCH_YES
2449 5028099 : && gfc_get_default_type (sym->name, sym->ns)->type == BT_DERIVED)
2450 0 : gfc_set_default_type (sym, 0, sym->ns);
2451 :
2452 : /* See if the type can be determined by resolution of the selector expression,
2453 : if allowable now, or inferred from references. */
2454 5027622 : if ((sym->ts.type == BT_UNKNOWN || inferred_type)
2455 2654206 : && m == MATCH_YES)
2456 : {
2457 1257 : bool sym_present, resolved = false;
2458 1257 : gfc_symbol *tgt_sym;
2459 :
2460 1257 : sym_present = tgt_expr && tgt_expr->symtree && tgt_expr->symtree->n.sym;
2461 1257 : tgt_sym = sym_present ? tgt_expr->symtree->n.sym : NULL;
2462 :
2463 : /* These target expressions can be resolved at any time:
2464 : (i) With a declared symbol or intrinsic function; or
2465 : (ii) An operator expression,
2466 : just as long as (iii) all the functions in the expression have been
2467 : declared or are intrinsic. */
2468 1257 : if (((sym_present // (i)
2469 877 : && (tgt_sym->attr.use_assoc
2470 877 : || tgt_sym->attr.host_assoc
2471 877 : || tgt_sym->attr.if_source == IFSRC_DECL
2472 877 : || tgt_sym->attr.proc == PROC_INTRINSIC
2473 877 : || gfc_is_intrinsic (tgt_sym, 0, tgt_expr->where)))
2474 1245 : || (tgt_expr && tgt_expr->expr_type == EXPR_OP)) // (ii)
2475 24 : && !gfc_traverse_expr (tgt_expr, NULL, resolvable_fcns, 0) // (iii)
2476 18 : && gfc_resolve_expr (tgt_expr))
2477 : {
2478 18 : sym->ts = tgt_expr->ts;
2479 18 : primary->ts = sym->ts;
2480 18 : resolved = true;
2481 : }
2482 :
2483 : /* If this hasn't done the trick and the target expression is a function,
2484 : or an unresolved operator expression, then this must be a derived type
2485 : if 'name' matches an accessible type both in this namespace and in the
2486 : as yet unparsed contained function. In principle, the type could have
2487 : already been inferred to be complex and yet a derived type with a
2488 : component name 're' or 'im' could be found. */
2489 18 : if (tgt_expr
2490 901 : && (tgt_expr->expr_type == EXPR_FUNCTION
2491 85 : || tgt_expr->expr_type == EXPR_ARRAY
2492 73 : || (!resolved && tgt_expr->expr_type == EXPR_OP))
2493 834 : && (sym->ts.type == BT_UNKNOWN
2494 388 : || (inferred_type && sym->ts.type != BT_COMPLEX))
2495 2025 : && gfc_find_derived_types (sym, gfc_current_ns, name, true))
2496 : {
2497 594 : sym->assoc->inferred_type = 1;
2498 : /* The first returned type is as good as any at this stage. The final
2499 : determination is made in 'gfc_fixup_inferred_type_refs'*/
2500 594 : gfc_symbol **dts = &sym->assoc->derived_types;
2501 594 : tgt_expr->ts.type = BT_DERIVED;
2502 594 : tgt_expr->ts.kind = 0;
2503 594 : tgt_expr->ts.u.derived = *dts;
2504 594 : sym->ts = tgt_expr->ts;
2505 594 : primary->ts = sym->ts;
2506 : /* Delete the dt list even if this process has to be done again for
2507 : another primary expression. */
2508 1218 : while (*dts && (*dts)->dt_next)
2509 : {
2510 624 : gfc_symbol **tmp = &(*dts)->dt_next;
2511 624 : *dts = NULL;
2512 624 : dts = tmp;
2513 : }
2514 : }
2515 : /* If there is a usable inquiry reference not there are no matching
2516 : derived types, force the inquiry reference by setting unknown the
2517 : type of the primary expression. */
2518 258 : else if (inquiry && (sym->ts.type == BT_DERIVED && inferred_type)
2519 711 : && !gfc_find_derived_types (sym, gfc_current_ns, name))
2520 48 : primary->ts.type = BT_UNKNOWN;
2521 :
2522 : /* Otherwise try resolving a copy of a component call. If it succeeds,
2523 : use that for the selector expression. */
2524 615 : else if (tgt_expr && tgt_expr->expr_type == EXPR_COMPCALL)
2525 : {
2526 1 : gfc_expr *cpy = gfc_copy_expr (tgt_expr);
2527 1 : if (gfc_resolve_expr (cpy))
2528 : {
2529 1 : gfc_replace_expr (tgt_expr, cpy);
2530 1 : sym->ts = tgt_expr->ts;
2531 : }
2532 : else
2533 0 : gfc_free_expr (cpy);
2534 : }
2535 :
2536 : /* An inquiry reference might determine the type, otherwise we have an
2537 : error. */
2538 1257 : if (sym->ts.type == BT_UNKNOWN && !inquiry)
2539 : {
2540 12 : gfc_error ("Symbol %qs at %C has no IMPLICIT type", sym->name);
2541 12 : return MATCH_ERROR;
2542 : }
2543 : }
2544 5026365 : else if ((sym->ts.type != BT_DERIVED && sym->ts.type != BT_CLASS)
2545 4798925 : && m == MATCH_YES && !inquiry)
2546 : {
2547 6 : gfc_error ("Unexpected %<%c%> for nonderived-type variable %qs at %C",
2548 : peeked_char, sym->name);
2549 6 : return MATCH_ERROR;
2550 : }
2551 :
2552 5027604 : if ((sym->ts.type != BT_DERIVED && sym->ts.type != BT_CLASS && !inquiry)
2553 229738 : || m != MATCH_YES)
2554 4877930 : goto check_substring;
2555 :
2556 149674 : if (!inquiry)
2557 148363 : sym = sym->ts.u.derived;
2558 : else
2559 : sym = NULL;
2560 :
2561 173963 : for (;;)
2562 : {
2563 173963 : bool t;
2564 173963 : gfc_symtree *tbp;
2565 173963 : gfc_typespec *ts = &primary->ts;
2566 :
2567 173963 : m = gfc_match_name (name);
2568 173963 : if (m == MATCH_NO)
2569 0 : gfc_error ("Expected structure component name at %C");
2570 173963 : if (m != MATCH_YES)
2571 135 : return MATCH_ERROR;
2572 :
2573 : /* For derived type components find typespec of ultimate component. */
2574 173963 : if (ts->type == BT_DERIVED && primary->ref)
2575 : {
2576 144900 : for (gfc_ref *ref = primary->ref; ref; ref = ref->next)
2577 : {
2578 83412 : if (ref->type == REF_COMPONENT && ref->u.c.component)
2579 24463 : ts = &ref->u.c.component->ts;
2580 : }
2581 : }
2582 :
2583 173963 : intrinsic = false;
2584 173963 : if (ts->type != BT_CLASS && ts->type != BT_DERIVED)
2585 : {
2586 1790 : inquiry = is_inquiry_ref (name, &tmp);
2587 1790 : if (inquiry)
2588 1785 : sym = NULL;
2589 :
2590 1790 : if (peeked_char == '%')
2591 : {
2592 1790 : if (tmp)
2593 : {
2594 1785 : gfc_symbol *s;
2595 1785 : switch (tmp->u.i)
2596 : {
2597 1242 : case INQUIRY_RE:
2598 1242 : case INQUIRY_IM:
2599 1242 : if (!gfc_notify_std (GFC_STD_F2008,
2600 : "RE or IM part_ref at %C"))
2601 : return MATCH_ERROR;
2602 : break;
2603 :
2604 288 : case INQUIRY_KIND:
2605 288 : if (!gfc_notify_std (GFC_STD_F2003,
2606 : "KIND part_ref at %C"))
2607 : return MATCH_ERROR;
2608 : break;
2609 :
2610 255 : case INQUIRY_LEN:
2611 255 : if (!gfc_notify_std (GFC_STD_F2003, "LEN part_ref at %C"))
2612 : return MATCH_ERROR;
2613 : break;
2614 : }
2615 :
2616 : /* If necessary, infer the type of the primary expression
2617 : and the associate-name using the the inquiry ref.. */
2618 1776 : s = primary->symtree ? primary->symtree->n.sym : NULL;
2619 1748 : if (s && s->assoc && s->assoc->target
2620 258 : && (s->ts.type == BT_UNKNOWN
2621 138 : || (primary->ts.type == BT_UNKNOWN
2622 48 : && s->assoc->inferred_type
2623 48 : && s->ts.type == BT_DERIVED)))
2624 : {
2625 168 : if (tmp->u.i == INQUIRY_RE || tmp->u.i == INQUIRY_IM)
2626 : {
2627 72 : s->ts.type = BT_COMPLEX;
2628 72 : s->ts.kind = gfc_default_real_kind;;
2629 72 : s->assoc->inferred_type = 1;
2630 72 : primary->ts = s->ts;
2631 : }
2632 96 : else if (tmp->u.i == INQUIRY_LEN)
2633 : {
2634 48 : s->ts.type = BT_CHARACTER;
2635 48 : s->ts.kind = gfc_default_character_kind;;
2636 48 : s->assoc->inferred_type = 1;
2637 48 : primary->ts = s->ts;
2638 : }
2639 48 : else if (s->ts.type == BT_UNKNOWN)
2640 : {
2641 : /* KIND inquiry gives no clue as to symbol type. */
2642 48 : primary->ref = tmp;
2643 48 : primary->ts.type = BT_INTEGER;
2644 48 : primary->ts.kind = gfc_default_integer_kind;
2645 48 : return MATCH_YES;
2646 : }
2647 : }
2648 :
2649 1728 : if ((tmp->u.i == INQUIRY_RE || tmp->u.i == INQUIRY_IM)
2650 1238 : && primary->ts.type != BT_COMPLEX)
2651 : {
2652 12 : gfc_error ("The RE or IM part_ref at %C must be "
2653 : "applied to a COMPLEX expression");
2654 12 : return MATCH_ERROR;
2655 : }
2656 1716 : else if (tmp->u.i == INQUIRY_LEN
2657 253 : && ts->type != BT_CHARACTER)
2658 : {
2659 5 : gfc_error ("The LEN part_ref at %C must be applied "
2660 : "to a CHARACTER expression");
2661 5 : return MATCH_ERROR;
2662 : }
2663 : }
2664 1716 : if (primary->ts.type != BT_UNKNOWN)
2665 173889 : intrinsic = true;
2666 : }
2667 : }
2668 : else
2669 : inquiry = false;
2670 :
2671 173889 : if (sym && sym->f2k_derived)
2672 169374 : tbp = gfc_find_typebound_proc (sym, &t, name, false, &gfc_current_locus);
2673 : else
2674 : tbp = NULL;
2675 :
2676 169374 : if (tbp)
2677 : {
2678 4032 : gfc_symbol* tbp_sym;
2679 :
2680 4032 : if (!t)
2681 : return MATCH_ERROR;
2682 :
2683 4030 : gcc_assert (!tail || !tail->next);
2684 :
2685 4030 : if (!(primary->expr_type == EXPR_VARIABLE
2686 : || (primary->expr_type == EXPR_STRUCTURE
2687 1 : && primary->symtree && primary->symtree->n.sym
2688 1 : && primary->symtree->n.sym->attr.flavor)))
2689 : return MATCH_ERROR;
2690 :
2691 4028 : if (tbp->n.tb->is_generic)
2692 : tbp_sym = NULL;
2693 : else
2694 3253 : tbp_sym = tbp->n.tb->u.specific->n.sym;
2695 :
2696 4028 : primary->expr_type = EXPR_COMPCALL;
2697 4028 : primary->value.compcall.tbp = tbp->n.tb;
2698 4028 : primary->value.compcall.name = tbp->name;
2699 4028 : primary->value.compcall.ignore_pass = 0;
2700 4028 : primary->value.compcall.assign = 0;
2701 4028 : primary->value.compcall.base_object = NULL;
2702 4028 : gcc_assert (primary->symtree->n.sym->attr.referenced);
2703 4028 : if (tbp_sym)
2704 3253 : primary->ts = tbp_sym->ts;
2705 : else
2706 775 : gfc_clear_ts (&primary->ts);
2707 :
2708 4028 : m = gfc_match_actual_arglist (tbp->n.tb->subroutine,
2709 : &primary->value.compcall.actual);
2710 4028 : if (m == MATCH_ERROR)
2711 : return MATCH_ERROR;
2712 4028 : if (m == MATCH_NO)
2713 : {
2714 162 : if (sub_flag)
2715 161 : primary->value.compcall.actual = NULL;
2716 : else
2717 : {
2718 1 : gfc_error ("Expected argument list at %C");
2719 1 : return MATCH_ERROR;
2720 : }
2721 : }
2722 :
2723 149539 : break;
2724 : }
2725 :
2726 169857 : previous = component;
2727 :
2728 169857 : if (!inquiry && !intrinsic)
2729 168143 : component = gfc_find_component (sym, name, false, false, &tmp);
2730 : else
2731 : component = NULL;
2732 :
2733 169857 : if (previous && inquiry
2734 415 : && (previous->attr.pdt_kind || previous->attr.pdt_len))
2735 : {
2736 4 : gfc_error_now ("R901: A type parameter ref is not a designtor and "
2737 : "cannot be followed by the type inquiry ref at %C");
2738 4 : return MATCH_ERROR;
2739 : }
2740 :
2741 169853 : if (intrinsic && !inquiry)
2742 : {
2743 3 : if (previous)
2744 2 : gfc_error ("%qs at %C is not an inquiry reference to an intrinsic "
2745 : "type component %qs", name, previous->name);
2746 : else
2747 1 : gfc_error ("%qs at %C is not an inquiry reference to an intrinsic "
2748 : "type component", name);
2749 3 : return MATCH_ERROR;
2750 : }
2751 169850 : else if (component == NULL && !inquiry)
2752 : return MATCH_ERROR;
2753 :
2754 : /* Extend the reference chain determined by gfc_find_component or
2755 : is_inquiry_ref. */
2756 169803 : if (primary->ref == NULL)
2757 101512 : primary->ref = tmp;
2758 : else
2759 : {
2760 : /* Find end of reference chain if inquiry reference and tail not
2761 : set. */
2762 68291 : if (tail == NULL && inquiry && tmp)
2763 11 : tail = extend_ref (primary, tail);
2764 :
2765 : /* Set by the for loop below for the last component ref. */
2766 68291 : gcc_assert (tail != NULL);
2767 68291 : tail->next = tmp;
2768 : }
2769 :
2770 : /* The reference chain may be longer than one hop for union
2771 : subcomponents; find the new tail. */
2772 171779 : for (tail = tmp; tail->next; tail = tail->next)
2773 : ;
2774 :
2775 169803 : if (tmp && tmp->type == REF_INQUIRY)
2776 : {
2777 1707 : if (!primary->where.u.lb || !primary->where.nextc)
2778 1523 : primary->where = gfc_current_locus;
2779 1707 : gfc_simplify_expr (primary, 0);
2780 :
2781 1707 : if (primary->expr_type == EXPR_CONSTANT)
2782 354 : goto check_done;
2783 :
2784 1353 : if (primary->ref == NULL)
2785 60 : goto check_done;
2786 :
2787 1293 : switch (tmp->u.i)
2788 : {
2789 1082 : case INQUIRY_RE:
2790 1082 : case INQUIRY_IM:
2791 1082 : if (!gfc_notify_std (GFC_STD_F2008, "RE or IM part_ref at %C"))
2792 : return MATCH_ERROR;
2793 :
2794 1082 : if (primary->ts.type != BT_COMPLEX)
2795 : {
2796 0 : gfc_error ("The RE or IM part_ref at %C must be "
2797 : "applied to a COMPLEX expression");
2798 0 : return MATCH_ERROR;
2799 : }
2800 1082 : primary->ts.type = BT_REAL;
2801 1082 : break;
2802 :
2803 159 : case INQUIRY_LEN:
2804 159 : if (!gfc_notify_std (GFC_STD_F2003, "LEN part_ref at %C"))
2805 : return MATCH_ERROR;
2806 :
2807 159 : if (primary->ts.type != BT_CHARACTER)
2808 : {
2809 0 : gfc_error ("The LEN part_ref at %C must be applied "
2810 : "to a CHARACTER expression");
2811 0 : return MATCH_ERROR;
2812 : }
2813 159 : primary->ts.u.cl = NULL;
2814 159 : primary->ts.type = BT_INTEGER;
2815 159 : primary->ts.kind = gfc_default_integer_kind;
2816 159 : break;
2817 :
2818 52 : case INQUIRY_KIND:
2819 52 : if (!gfc_notify_std (GFC_STD_F2003, "KIND part_ref at %C"))
2820 : return MATCH_ERROR;
2821 :
2822 52 : if (primary->ts.type == BT_CLASS
2823 52 : || primary->ts.type == BT_DERIVED)
2824 : {
2825 0 : gfc_error ("The KIND part_ref at %C must be applied "
2826 : "to an expression of intrinsic type");
2827 0 : return MATCH_ERROR;
2828 : }
2829 52 : primary->ts.type = BT_INTEGER;
2830 52 : primary->ts.kind = gfc_default_integer_kind;
2831 52 : break;
2832 :
2833 0 : default:
2834 0 : gcc_unreachable ();
2835 : }
2836 :
2837 1293 : goto check_done;
2838 : }
2839 :
2840 168096 : primary->ts = component->ts;
2841 :
2842 168096 : if (component->attr.proc_pointer && ppc_arg)
2843 : {
2844 : /* Procedure pointer component call: Look for argument list. */
2845 1092 : m = gfc_match_actual_arglist (sub_flag,
2846 : &primary->value.compcall.actual);
2847 1092 : if (m == MATCH_ERROR)
2848 : return MATCH_ERROR;
2849 :
2850 1092 : if (m == MATCH_NO && !gfc_matching_ptr_assignment
2851 271 : && !gfc_matching_procptr_assignment && !matching_actual_arglist)
2852 : {
2853 2 : gfc_error ("Procedure pointer component %qs requires an "
2854 : "argument list at %C", component->name);
2855 2 : return MATCH_ERROR;
2856 : }
2857 :
2858 1090 : if (m == MATCH_YES)
2859 820 : primary->expr_type = EXPR_PPC;
2860 :
2861 : break;
2862 : }
2863 :
2864 167004 : if (component->as != NULL && !component->attr.proc_pointer)
2865 : {
2866 60293 : tail = extend_ref (primary, tail);
2867 60293 : tail->type = REF_ARRAY;
2868 :
2869 120586 : m = gfc_match_array_ref (&tail->u.ar, component->as, equiv_flag,
2870 60293 : component->as->corank);
2871 60293 : if (m != MATCH_YES)
2872 : return m;
2873 : }
2874 106711 : else if (component->ts.type == BT_CLASS && component->attr.class_ok
2875 10468 : && CLASS_DATA (component)->as && !component->attr.proc_pointer)
2876 : {
2877 4970 : tail = extend_ref (primary, tail);
2878 4970 : tail->type = REF_ARRAY;
2879 :
2880 9940 : m = gfc_match_array_ref (&tail->u.ar, CLASS_DATA (component)->as,
2881 : equiv_flag,
2882 4970 : CLASS_DATA (component)->as->corank);
2883 4970 : if (m != MATCH_YES)
2884 : return m;
2885 : }
2886 :
2887 101741 : check_done:
2888 : /* In principle, we could have eg. expr%re%kind so we must allow for
2889 : this possibility. */
2890 168711 : if (gfc_match_char ('%') == MATCH_YES)
2891 : {
2892 23919 : if (component && (component->ts.type == BT_DERIVED
2893 3183 : || component->ts.type == BT_CLASS))
2894 23444 : sym = component->ts.u.derived;
2895 23919 : continue;
2896 : }
2897 144792 : else if (inquiry)
2898 : break;
2899 :
2900 133363 : if ((component->ts.type != BT_DERIVED && component->ts.type != BT_CLASS)
2901 150845 : || gfc_match_member_sep (component->ts.u.derived) != MATCH_YES)
2902 : break;
2903 :
2904 370 : if (component->ts.type == BT_DERIVED || component->ts.type == BT_CLASS)
2905 370 : sym = component->ts.u.derived;
2906 : }
2907 :
2908 5029480 : check_substring:
2909 5029480 : unknown = false;
2910 5029480 : if (primary->ts.type == BT_UNKNOWN && !gfc_fl_struct (sym->attr.flavor))
2911 : {
2912 2652786 : if (gfc_get_default_type (sym->name, sym->ns)->type == BT_CHARACTER)
2913 : {
2914 352 : gfc_set_default_type (sym, 0, sym->ns);
2915 352 : primary->ts = sym->ts;
2916 352 : unknown = true;
2917 : }
2918 : }
2919 :
2920 5029480 : if (primary->ts.type == BT_CHARACTER)
2921 : {
2922 303125 : bool def = primary->ts.deferred == 1;
2923 303125 : switch (match_substring (primary->ts.u.cl, equiv_flag, &substring, def))
2924 : {
2925 13403 : case MATCH_YES:
2926 13403 : if (tail == NULL)
2927 8227 : primary->ref = substring;
2928 : else
2929 5176 : tail->next = substring;
2930 :
2931 13403 : if (primary->expr_type == EXPR_CONSTANT)
2932 755 : primary->expr_type = EXPR_SUBSTRING;
2933 :
2934 13403 : if (substring)
2935 13223 : primary->ts.u.cl = NULL;
2936 :
2937 13403 : gfc_gobble_whitespace ();
2938 13403 : if (gfc_peek_ascii_char () == '(')
2939 : {
2940 5 : gfc_error_now ("Unexpected array/substring ref at %C");
2941 5 : return MATCH_ERROR;
2942 : }
2943 : break;
2944 :
2945 289722 : case MATCH_NO:
2946 289722 : if (unknown)
2947 : {
2948 351 : gfc_clear_ts (&primary->ts);
2949 351 : gfc_clear_ts (&sym->ts);
2950 : }
2951 : break;
2952 :
2953 : case MATCH_ERROR:
2954 : return MATCH_ERROR;
2955 : }
2956 : }
2957 :
2958 : /* F08:C611. */
2959 5029475 : if (primary->ts.type == BT_DERIVED && primary->ref
2960 28216 : && primary->ts.u.derived && primary->ts.u.derived->attr.abstract)
2961 : {
2962 6 : gfc_error ("Nonpolymorphic reference to abstract type at %C");
2963 6 : return MATCH_ERROR;
2964 : }
2965 :
2966 : /* F08:C727. */
2967 5029469 : if (primary->expr_type == EXPR_PPC && gfc_is_coindexed (primary))
2968 : {
2969 3 : gfc_error ("Coindexed procedure-pointer component at %C");
2970 3 : return MATCH_ERROR;
2971 : }
2972 :
2973 : return MATCH_YES;
2974 : }
2975 :
2976 :
2977 : /* Given an expression that is a variable, figure out what the
2978 : ultimate variable's type and attribute is, traversing the reference
2979 : structures if necessary.
2980 :
2981 : This subroutine is trickier than it looks. We start at the base
2982 : symbol and store the attribute. Component references load a
2983 : completely new attribute.
2984 :
2985 : A couple of rules come into play. Subobjects of targets are always
2986 : targets themselves. If we see a component that goes through a
2987 : pointer, then the expression must also be a target, since the
2988 : pointer is associated with something (if it isn't core will soon be
2989 : dumped). If we see a full part or section of an array, the
2990 : expression is also an array.
2991 :
2992 : We can have at most one full array reference. */
2993 :
2994 : symbol_attribute
2995 5090307 : gfc_variable_attr (gfc_expr *expr, gfc_typespec *ts)
2996 : {
2997 5090307 : int dimension, codimension, pointer, allocatable, target, optional;
2998 5090307 : symbol_attribute attr;
2999 5090307 : gfc_ref *ref;
3000 5090307 : gfc_symbol *sym;
3001 5090307 : gfc_component *comp;
3002 5090307 : bool has_inquiry_part;
3003 5090307 : bool has_substring_ref = false;
3004 :
3005 5090307 : if (expr->expr_type != EXPR_VARIABLE
3006 27717 : && expr->expr_type != EXPR_FUNCTION
3007 9 : && !(expr->expr_type == EXPR_NULL && expr->ts.type != BT_UNKNOWN))
3008 0 : gfc_internal_error ("gfc_variable_attr(): Expression isn't a variable");
3009 :
3010 5090307 : sym = expr->symtree->n.sym;
3011 5090307 : attr = sym->attr;
3012 :
3013 5090307 : optional = attr.optional;
3014 5090307 : if (sym->ts.type == BT_CLASS && sym->attr.class_ok && sym->ts.u.derived)
3015 : {
3016 165779 : dimension = CLASS_DATA (sym)->attr.dimension;
3017 165779 : codimension = CLASS_DATA (sym)->attr.codimension;
3018 165779 : pointer = CLASS_DATA (sym)->attr.class_pointer;
3019 165779 : allocatable = CLASS_DATA (sym)->attr.allocatable;
3020 : }
3021 : else
3022 : {
3023 4924528 : dimension = attr.dimension;
3024 4924528 : codimension = attr.codimension;
3025 4924528 : pointer = attr.pointer;
3026 4924528 : allocatable = attr.allocatable;
3027 : }
3028 :
3029 5090307 : target = attr.target;
3030 5090307 : if (pointer || attr.proc_pointer)
3031 250363 : target = 1;
3032 :
3033 : /* F2018:11.1.3.3: Other attributes of associate names
3034 : "The associating entity does not have the ALLOCATABLE or POINTER
3035 : attributes; it has the TARGET attribute if and only if the selector is
3036 : a variable and has either the TARGET or POINTER attribute." */
3037 5090307 : if (sym->attr.associate_var && sym->assoc && sym->assoc->target)
3038 : {
3039 33111 : if (sym->assoc->target->expr_type == EXPR_VARIABLE)
3040 : {
3041 29987 : symbol_attribute tgt_attr;
3042 29987 : tgt_attr = gfc_expr_attr (sym->assoc->target);
3043 38729 : target = (tgt_attr.pointer || tgt_attr.target);
3044 : }
3045 : else
3046 : target = 0;
3047 : }
3048 :
3049 5090307 : if (ts != NULL && expr->ts.type == BT_UNKNOWN)
3050 52027 : *ts = sym->ts;
3051 :
3052 : /* Catch left-overs from match_actual_arg, where an actual argument of a
3053 : procedure is given a temporary ts.type == BT_PROCEDURE. The fixup is
3054 : needed for structure constructors in DATA statements, where a pointer
3055 : is associated with a data target, and the argument has not been fully
3056 : resolved yet. Components references are dealt with further below. */
3057 52027 : if (ts != NULL
3058 1303592 : && expr->ts.type == BT_PROCEDURE
3059 2863 : && expr->ref == NULL
3060 2863 : && attr.flavor != FL_PROCEDURE
3061 105 : && attr.target)
3062 1 : *ts = sym->ts;
3063 :
3064 5090307 : has_inquiry_part = false;
3065 6907076 : for (ref = expr->ref; ref; ref = ref->next)
3066 1818437 : if (ref->type == REF_SUBSTRING)
3067 : {
3068 : has_substring_ref = true;
3069 : optional = false;
3070 : }
3071 1800493 : else if (ref->type == REF_INQUIRY)
3072 : {
3073 : has_inquiry_part = true;
3074 : optional = false;
3075 : break;
3076 : }
3077 :
3078 6908751 : for (ref = expr->ref; ref; ref = ref->next)
3079 1818444 : switch (ref->type)
3080 : {
3081 1421684 : case REF_ARRAY:
3082 :
3083 1421684 : switch (ref->u.ar.type)
3084 : {
3085 : case AR_FULL:
3086 1818444 : dimension = 1;
3087 : break;
3088 :
3089 113094 : case AR_SECTION:
3090 113094 : allocatable = pointer = 0;
3091 113094 : dimension = 1;
3092 113094 : optional = false;
3093 113094 : break;
3094 :
3095 326900 : case AR_ELEMENT:
3096 : /* Handle coarrays. */
3097 326900 : if (ref->u.ar.dimen > 0)
3098 1818444 : allocatable = pointer = optional = false;
3099 : break;
3100 :
3101 : case AR_UNKNOWN:
3102 : /* For standard conforming code, AR_UNKNOWN should not happen.
3103 : For nonconforming code, gfortran can end up here. Treat it
3104 : as a no-op. */
3105 : break;
3106 : }
3107 :
3108 : break;
3109 :
3110 377141 : case REF_COMPONENT:
3111 377141 : optional = false;
3112 377141 : comp = ref->u.c.component;
3113 377141 : attr = comp->attr;
3114 377141 : if (ts != NULL && !has_inquiry_part)
3115 : {
3116 85166 : *ts = comp->ts;
3117 : /* Don't set the string length if a substring reference
3118 : follows. */
3119 85166 : if (ts->type == BT_CHARACTER && has_substring_ref)
3120 294 : ts->u.cl = NULL;
3121 : }
3122 :
3123 377141 : if (comp->ts.type == BT_CLASS)
3124 : {
3125 28789 : dimension = CLASS_DATA (comp)->attr.dimension;
3126 28789 : codimension = CLASS_DATA (comp)->attr.codimension;
3127 28789 : pointer = CLASS_DATA (comp)->attr.class_pointer;
3128 28789 : allocatable = CLASS_DATA (comp)->attr.allocatable;
3129 : }
3130 : else
3131 : {
3132 348352 : dimension = comp->attr.dimension;
3133 348352 : codimension = comp->attr.codimension;
3134 348352 : if (expr->ts.type == BT_CLASS && strcmp (comp->name, "_data") == 0)
3135 18810 : pointer = comp->attr.class_pointer;
3136 : else
3137 329542 : pointer = comp->attr.pointer;
3138 348352 : allocatable = comp->attr.allocatable;
3139 : }
3140 377141 : if (pointer || attr.proc_pointer)
3141 69481 : target = 1;
3142 :
3143 : break;
3144 :
3145 19619 : case REF_INQUIRY:
3146 19619 : case REF_SUBSTRING:
3147 19619 : allocatable = pointer = optional = false;
3148 19619 : break;
3149 : }
3150 :
3151 5090307 : attr.dimension = dimension;
3152 5090307 : attr.codimension = codimension;
3153 5090307 : attr.pointer = pointer;
3154 5090307 : attr.allocatable = allocatable;
3155 5090307 : attr.target = target;
3156 5090307 : attr.save = sym->attr.save;
3157 5090307 : attr.optional = optional;
3158 :
3159 5090307 : return attr;
3160 : }
3161 :
3162 :
3163 : /* Return the attribute from a general expression. */
3164 :
3165 : symbol_attribute
3166 4462706 : gfc_expr_attr (gfc_expr *e)
3167 : {
3168 4462706 : symbol_attribute attr;
3169 :
3170 4462706 : switch (e->expr_type)
3171 : {
3172 3750252 : case EXPR_VARIABLE:
3173 3750252 : attr = gfc_variable_attr (e, NULL);
3174 3750252 : break;
3175 :
3176 43111 : case EXPR_FUNCTION:
3177 43111 : gfc_clear_attr (&attr);
3178 :
3179 43111 : if (e->value.function.esym && e->value.function.esym->result)
3180 : {
3181 15123 : gfc_symbol *sym = e->value.function.esym->result;
3182 15123 : attr = sym->attr;
3183 15123 : if (sym->ts.type == BT_CLASS && sym->attr.class_ok)
3184 : {
3185 1877 : attr.dimension = CLASS_DATA (sym)->attr.dimension;
3186 1877 : attr.pointer = CLASS_DATA (sym)->attr.class_pointer;
3187 1877 : attr.allocatable = CLASS_DATA (sym)->attr.allocatable;
3188 : }
3189 : }
3190 27988 : else if (e->value.function.isym
3191 25632 : && e->value.function.isym->transformational
3192 15654 : && e->ts.type == BT_CLASS)
3193 294 : attr = CLASS_DATA (e)->attr;
3194 27694 : else if (e->symtree)
3195 27694 : attr = gfc_variable_attr (e, NULL);
3196 :
3197 : /* TODO: NULL() returns pointers. May have to take care of this
3198 : here. */
3199 :
3200 : break;
3201 :
3202 669343 : default:
3203 669343 : gfc_clear_attr (&attr);
3204 669343 : break;
3205 : }
3206 :
3207 4462706 : return attr;
3208 : }
3209 :
3210 :
3211 : /* Given an expression, figure out what the ultimate expression
3212 : attribute is. This routine is similar to gfc_variable_attr with
3213 : parts of gfc_expr_attr, but focuses more on the needs of
3214 : coarrays. For coarrays a codimension attribute is kind of
3215 : "infectious" being propagated once set and never cleared.
3216 : The coarray_comp is only set, when the expression refs a coarray
3217 : component. REFS_COMP is set when present to true only, when this EXPR
3218 : refs a (non-_data) component. To check whether EXPR refs an allocatable
3219 : component in a derived type coarray *refs_comp needs to be set and
3220 : coarray_comp has to false. */
3221 :
3222 : static symbol_attribute
3223 15733 : caf_variable_attr (gfc_expr *expr, bool in_allocate, bool *refs_comp)
3224 : {
3225 15733 : int dimension, codimension, pointer, allocatable, target, coarray_comp;
3226 15733 : symbol_attribute attr;
3227 15733 : gfc_ref *ref;
3228 15733 : gfc_symbol *sym;
3229 15733 : gfc_component *comp;
3230 :
3231 15733 : if (expr->expr_type != EXPR_VARIABLE && expr->expr_type != EXPR_FUNCTION)
3232 0 : gfc_internal_error ("gfc_caf_attr(): Expression isn't a variable");
3233 :
3234 15733 : sym = expr->symtree->n.sym;
3235 15733 : gfc_clear_attr (&attr);
3236 :
3237 15733 : if (refs_comp)
3238 10578 : *refs_comp = false;
3239 :
3240 15733 : if (sym->ts.type == BT_CLASS && sym->attr.class_ok)
3241 : {
3242 404 : dimension = CLASS_DATA (sym)->attr.dimension;
3243 404 : codimension = CLASS_DATA (sym)->attr.codimension;
3244 404 : pointer = CLASS_DATA (sym)->attr.class_pointer;
3245 404 : allocatable = CLASS_DATA (sym)->attr.allocatable;
3246 404 : attr.alloc_comp = CLASS_DATA (sym)->ts.u.derived->attr.alloc_comp;
3247 404 : attr.pointer_comp = CLASS_DATA (sym)->ts.u.derived->attr.pointer_comp;
3248 : }
3249 : else
3250 : {
3251 15329 : dimension = sym->attr.dimension;
3252 15329 : codimension = sym->attr.codimension;
3253 15329 : pointer = sym->attr.pointer;
3254 15329 : allocatable = sym->attr.allocatable;
3255 30658 : attr.alloc_comp = sym->ts.type == BT_DERIVED
3256 15329 : ? sym->ts.u.derived->attr.alloc_comp : 0;
3257 15329 : attr.pointer_comp = sym->ts.type == BT_DERIVED
3258 15329 : ? sym->ts.u.derived->attr.pointer_comp : 0;
3259 : }
3260 :
3261 15733 : target = coarray_comp = 0;
3262 15733 : if (pointer || attr.proc_pointer)
3263 627 : target = 1;
3264 :
3265 27829 : for (ref = expr->ref; ref; ref = ref->next)
3266 12096 : switch (ref->type)
3267 : {
3268 8421 : case REF_ARRAY:
3269 :
3270 8421 : switch (ref->u.ar.type)
3271 : {
3272 : case AR_FULL:
3273 : case AR_SECTION:
3274 : dimension = 1;
3275 8421 : break;
3276 :
3277 3933 : case AR_ELEMENT:
3278 : /* Handle coarrays. */
3279 3933 : if (ref->u.ar.dimen > 0 && !in_allocate)
3280 8421 : allocatable = pointer = 0;
3281 : break;
3282 :
3283 0 : case AR_UNKNOWN:
3284 : /* If any of start, end or stride is not integer, there will
3285 : already have been an error issued. */
3286 0 : int errors;
3287 0 : gfc_get_errors (NULL, &errors);
3288 0 : if (errors == 0)
3289 0 : gfc_internal_error ("gfc_caf_attr(): Bad array reference");
3290 : }
3291 :
3292 : break;
3293 :
3294 3673 : case REF_COMPONENT:
3295 3673 : comp = ref->u.c.component;
3296 :
3297 3673 : if (comp->ts.type == BT_CLASS)
3298 : {
3299 : /* Set coarray_comp only, when this component introduces the
3300 : coarray. */
3301 13 : coarray_comp = !codimension && CLASS_DATA (comp)->attr.codimension;
3302 13 : codimension |= CLASS_DATA (comp)->attr.codimension;
3303 13 : pointer = CLASS_DATA (comp)->attr.class_pointer;
3304 13 : allocatable = CLASS_DATA (comp)->attr.allocatable;
3305 : }
3306 : else
3307 : {
3308 : /* Set coarray_comp only, when this component introduces the
3309 : coarray. */
3310 3660 : coarray_comp = !codimension && comp->attr.codimension;
3311 3660 : codimension |= comp->attr.codimension;
3312 3660 : pointer = comp->attr.pointer;
3313 3660 : allocatable = comp->attr.allocatable;
3314 : }
3315 :
3316 3673 : if (refs_comp && strcmp (comp->name, "_data") != 0
3317 2179 : && (ref->next == NULL
3318 1650 : || (ref->next->type == REF_ARRAY && ref->next->next == NULL)))
3319 1610 : *refs_comp = true;
3320 :
3321 3673 : if (pointer || attr.proc_pointer)
3322 690 : target = 1;
3323 :
3324 : break;
3325 :
3326 : case REF_SUBSTRING:
3327 : case REF_INQUIRY:
3328 12096 : allocatable = pointer = 0;
3329 : break;
3330 : }
3331 :
3332 15733 : attr.dimension = dimension;
3333 15733 : attr.codimension = codimension;
3334 15733 : attr.pointer = pointer;
3335 15733 : attr.allocatable = allocatable;
3336 15733 : attr.target = target;
3337 15733 : attr.save = sym->attr.save;
3338 15733 : attr.coarray_comp = coarray_comp;
3339 :
3340 15733 : return attr;
3341 : }
3342 :
3343 :
3344 : symbol_attribute
3345 19722 : gfc_caf_attr (gfc_expr *e, bool in_allocate, bool *refs_comp)
3346 : {
3347 19722 : symbol_attribute attr;
3348 :
3349 19722 : switch (e->expr_type)
3350 : {
3351 14284 : case EXPR_VARIABLE:
3352 14284 : attr = caf_variable_attr (e, in_allocate, refs_comp);
3353 14284 : break;
3354 :
3355 1455 : case EXPR_FUNCTION:
3356 1455 : gfc_clear_attr (&attr);
3357 :
3358 1455 : if (e->value.function.esym && e->value.function.esym->result)
3359 : {
3360 6 : gfc_symbol *sym = e->value.function.esym->result;
3361 6 : attr = sym->attr;
3362 6 : if (sym->ts.type == BT_CLASS)
3363 : {
3364 0 : attr.dimension = CLASS_DATA (sym)->attr.dimension;
3365 0 : attr.pointer = CLASS_DATA (sym)->attr.class_pointer;
3366 0 : attr.allocatable = CLASS_DATA (sym)->attr.allocatable;
3367 0 : attr.alloc_comp = CLASS_DATA (sym)->ts.u.derived->attr.alloc_comp;
3368 0 : attr.pointer_comp = CLASS_DATA (sym)->ts.u.derived
3369 0 : ->attr.pointer_comp;
3370 : }
3371 : }
3372 1449 : else if (e->symtree)
3373 1449 : attr = caf_variable_attr (e, in_allocate, refs_comp);
3374 : else
3375 0 : gfc_clear_attr (&attr);
3376 : break;
3377 :
3378 3983 : default:
3379 3983 : gfc_clear_attr (&attr);
3380 3983 : break;
3381 : }
3382 :
3383 19722 : return attr;
3384 : }
3385 :
3386 :
3387 : /* Match a structure constructor. The initial symbol has already been
3388 : seen. */
3389 :
3390 : typedef struct gfc_structure_ctor_component
3391 : {
3392 : char* name;
3393 : gfc_expr* val;
3394 : locus where;
3395 : struct gfc_structure_ctor_component* next;
3396 : }
3397 : gfc_structure_ctor_component;
3398 :
3399 : #define gfc_get_structure_ctor_component() XCNEW (gfc_structure_ctor_component)
3400 :
3401 : static void
3402 10419 : gfc_free_structure_ctor_component (gfc_structure_ctor_component *comp)
3403 : {
3404 10419 : free (comp->name);
3405 10419 : gfc_free_expr (comp->val);
3406 10419 : free (comp);
3407 10419 : }
3408 :
3409 :
3410 : /* Translate the component list into the actual constructor by sorting it in
3411 : the order required; this also checks along the way that each and every
3412 : component actually has an initializer and handles default initializers
3413 : for components without explicit value given. */
3414 : static bool
3415 7238 : build_actual_constructor (gfc_structure_ctor_component **comp_head,
3416 : gfc_constructor_base *ctor_head, gfc_symbol *sym)
3417 : {
3418 7238 : gfc_structure_ctor_component *comp_iter;
3419 7238 : gfc_component *comp;
3420 :
3421 19052 : for (comp = sym->components; comp; comp = comp->next)
3422 : {
3423 11819 : gfc_structure_ctor_component **next_ptr;
3424 11819 : gfc_expr *value = NULL;
3425 :
3426 : /* Try to find the initializer for the current component by name. */
3427 11819 : next_ptr = comp_head;
3428 12986 : for (comp_iter = *comp_head; comp_iter; comp_iter = comp_iter->next)
3429 : {
3430 11562 : if (!strcmp (comp_iter->name, comp->name))
3431 : break;
3432 1167 : next_ptr = &comp_iter->next;
3433 : }
3434 :
3435 : /* If an extension, try building the parent derived type by building
3436 : a value expression for the parent derived type and calling self. */
3437 11819 : if (!comp_iter && comp == sym->components && sym->attr.extension)
3438 : {
3439 106 : value = gfc_get_structure_constructor_expr (comp->ts.type,
3440 : comp->ts.kind,
3441 : &gfc_current_locus);
3442 106 : value->ts = comp->ts;
3443 :
3444 106 : if (!build_actual_constructor (comp_head,
3445 : &value->value.constructor,
3446 106 : comp->ts.u.derived))
3447 : {
3448 0 : gfc_free_expr (value);
3449 0 : return false;
3450 : }
3451 :
3452 106 : gfc_constructor_append_expr (ctor_head, value, NULL);
3453 106 : continue;
3454 : }
3455 :
3456 : /* If it was not found, apply NULL expression to set the component as
3457 : unallocated. Then try the default initializer if there's any;
3458 : otherwise, it's an error unless this is a deferred parameter. */
3459 1318 : if (!comp_iter)
3460 : {
3461 : /* F2018 7.5.10: If an allocatable component has no corresponding
3462 : component-data-source, then that component has an allocation
3463 : status of unallocated.... */
3464 1318 : if (comp->attr.allocatable
3465 1183 : || (comp->ts.type == BT_CLASS
3466 15 : && CLASS_DATA (comp)->attr.allocatable))
3467 : {
3468 144 : if (!gfc_notify_std (GFC_STD_F2008, "No initializer for "
3469 : "allocatable component %qs given in the "
3470 : "structure constructor at %C", comp->name))
3471 : return false;
3472 144 : value = gfc_get_null_expr (&gfc_current_locus);
3473 : }
3474 : /* ....(Preceding sentence) If a component with default
3475 : initialization has no corresponding component-data-source, then
3476 : the default initialization is applied to that component. */
3477 1174 : else if (comp->initializer)
3478 : {
3479 661 : if (!gfc_notify_std (GFC_STD_F2003, "Structure constructor "
3480 : "with missing optional arguments at %C"))
3481 : return false;
3482 659 : value = gfc_copy_expr (comp->initializer);
3483 : }
3484 : /* Do not trap components such as the string length for deferred
3485 : length character components. */
3486 513 : else if (!comp->attr.artificial)
3487 : {
3488 3 : gfc_error ("No initializer for component %qs given in the"
3489 : " structure constructor at %C", comp->name);
3490 3 : return false;
3491 : }
3492 : }
3493 : else
3494 10395 : value = comp_iter->val;
3495 :
3496 : /* Add the value to the constructor chain built. */
3497 11708 : gfc_constructor_append_expr (ctor_head, value, NULL);
3498 :
3499 : /* Remove the entry from the component list. We don't want the expression
3500 : value to be free'd, so set it to NULL. */
3501 11708 : if (comp_iter)
3502 : {
3503 10395 : *next_ptr = comp_iter->next;
3504 10395 : comp_iter->val = NULL;
3505 10395 : gfc_free_structure_ctor_component (comp_iter);
3506 : }
3507 : }
3508 : return true;
3509 : }
3510 :
3511 :
3512 : bool
3513 7147 : gfc_convert_to_structure_constructor (gfc_expr *e, gfc_symbol *sym, gfc_expr **cexpr,
3514 : gfc_actual_arglist **arglist,
3515 : bool parent)
3516 : {
3517 7147 : gfc_actual_arglist *actual;
3518 7147 : gfc_structure_ctor_component *comp_tail, *comp_head, *comp_iter;
3519 7147 : gfc_constructor_base ctor_head = NULL;
3520 7147 : gfc_component *comp; /* Is set NULL when named component is first seen */
3521 7147 : const char* last_name = NULL;
3522 7147 : locus old_locus;
3523 7147 : gfc_expr *expr;
3524 :
3525 7147 : expr = parent ? *cexpr : e;
3526 7147 : old_locus = gfc_current_locus;
3527 7147 : if (parent)
3528 : ; /* gfc_current_locus = *arglist->expr ? ->where;*/
3529 : else
3530 6415 : gfc_current_locus = expr->where;
3531 :
3532 7147 : comp_tail = comp_head = NULL;
3533 :
3534 7147 : if (!parent && sym->attr.abstract)
3535 : {
3536 1 : gfc_error ("Cannot construct ABSTRACT type %qs at %L",
3537 : sym->name, &expr->where);
3538 1 : goto cleanup;
3539 : }
3540 :
3541 7146 : comp = sym->components;
3542 7146 : actual = parent ? *arglist : expr->value.function.actual;
3543 16946 : for ( ; actual; )
3544 : {
3545 10419 : gfc_component *this_comp = NULL;
3546 :
3547 10419 : if (!comp_head)
3548 6726 : comp_tail = comp_head = gfc_get_structure_ctor_component ();
3549 : else
3550 : {
3551 3693 : comp_tail->next = gfc_get_structure_ctor_component ();
3552 3693 : comp_tail = comp_tail->next;
3553 : }
3554 10419 : if (actual->name)
3555 : {
3556 1345 : if (!gfc_notify_std (GFC_STD_F2003, "Structure"
3557 : " constructor with named arguments at %C"))
3558 1 : goto cleanup;
3559 :
3560 1344 : comp_tail->name = xstrdup (actual->name);
3561 1344 : last_name = comp_tail->name;
3562 1344 : comp = NULL;
3563 : }
3564 : else
3565 : {
3566 : /* Components without name are not allowed after the first named
3567 : component initializer! */
3568 9074 : if (!comp || comp->attr.artificial)
3569 : {
3570 2 : if (last_name)
3571 0 : gfc_error ("Component initializer without name after component"
3572 : " named %s at %L", last_name,
3573 0 : actual->expr ? &actual->expr->where
3574 : : &gfc_current_locus);
3575 : else
3576 2 : gfc_error ("Too many components in structure constructor at "
3577 2 : "%L", actual->expr ? &actual->expr->where
3578 : : &gfc_current_locus);
3579 2 : goto cleanup;
3580 : }
3581 :
3582 9072 : comp_tail->name = xstrdup (comp->name);
3583 : }
3584 :
3585 : /* Find the current component in the structure definition and check
3586 : its access is not private. */
3587 10416 : if (comp)
3588 9072 : this_comp = gfc_find_component (sym, comp->name, false, false, NULL);
3589 : else
3590 : {
3591 1344 : this_comp = gfc_find_component (sym, (const char *)comp_tail->name,
3592 : false, false, NULL);
3593 1344 : comp = NULL; /* Reset needed! */
3594 : }
3595 :
3596 : /* Here we can check if a component name is given which does not
3597 : correspond to any component of the defined structure. */
3598 10416 : if (!this_comp)
3599 8 : goto cleanup;
3600 :
3601 : /* For a constant string constructor, make sure the length is
3602 : correct; truncate or fill with blanks if needed. */
3603 10408 : if (this_comp->ts.type == BT_CHARACTER && !this_comp->attr.allocatable
3604 1095 : && this_comp->ts.u.cl && this_comp->ts.u.cl->length
3605 1093 : && this_comp->ts.u.cl->length->expr_type == EXPR_CONSTANT
3606 1075 : && this_comp->ts.u.cl->length->ts.type == BT_INTEGER
3607 1074 : && actual->expr->ts.type == BT_CHARACTER
3608 960 : && actual->expr->expr_type == EXPR_CONSTANT)
3609 : {
3610 737 : ptrdiff_t c, e1;
3611 737 : c = gfc_mpz_get_hwi (this_comp->ts.u.cl->length->value.integer);
3612 737 : e1 = actual->expr->value.character.length;
3613 :
3614 737 : if (c != e1)
3615 : {
3616 249 : ptrdiff_t i, to;
3617 249 : gfc_char_t *dest;
3618 249 : dest = gfc_get_wide_string (c + 1);
3619 :
3620 249 : to = e1 < c ? e1 : c;
3621 4482 : for (i = 0; i < to; i++)
3622 4233 : dest[i] = actual->expr->value.character.string[i];
3623 :
3624 5812 : for (i = e1; i < c; i++)
3625 5563 : dest[i] = ' ';
3626 :
3627 249 : dest[c] = '\0';
3628 249 : free (actual->expr->value.character.string);
3629 :
3630 249 : actual->expr->value.character.length = c;
3631 249 : actual->expr->value.character.string = dest;
3632 :
3633 249 : if (warn_line_truncation && c < e1)
3634 14 : gfc_warning_now (OPT_Wcharacter_truncation,
3635 : "CHARACTER expression will be truncated "
3636 : "in constructor (%td/%td) at %L", c,
3637 : e1, &actual->expr->where);
3638 : }
3639 : }
3640 :
3641 10408 : comp_tail->val = actual->expr;
3642 10408 : if (actual->expr != NULL)
3643 10408 : comp_tail->where = actual->expr->where;
3644 10408 : actual->expr = NULL;
3645 :
3646 : /* Check if this component is already given a value. */
3647 16580 : for (comp_iter = comp_head; comp_iter != comp_tail;
3648 6172 : comp_iter = comp_iter->next)
3649 : {
3650 6173 : gcc_assert (comp_iter);
3651 6173 : if (!strcmp (comp_iter->name, comp_tail->name))
3652 : {
3653 1 : gfc_error ("Component %qs is initialized twice in the structure"
3654 : " constructor at %L", comp_tail->name,
3655 : comp_tail->val ? &comp_tail->where
3656 : : &gfc_current_locus);
3657 1 : goto cleanup;
3658 : }
3659 : }
3660 :
3661 : /* F2008, R457/C725, for PURE C1283. */
3662 72 : if (this_comp->attr.pointer && comp_tail->val
3663 10479 : && gfc_is_coindexed (comp_tail->val))
3664 : {
3665 2 : gfc_error ("Coindexed expression to pointer component %qs in "
3666 : "structure constructor at %L", comp_tail->name,
3667 : &comp_tail->where);
3668 2 : goto cleanup;
3669 : }
3670 :
3671 : /* If not explicitly a parent constructor, gather up the components
3672 : and build one. */
3673 10405 : if (comp && comp == sym->components
3674 6286 : && sym->attr.extension
3675 780 : && comp_tail->val
3676 780 : && (!gfc_bt_struct (comp_tail->val->ts.type)
3677 78 : ||
3678 78 : comp_tail->val->ts.u.derived != this_comp->ts.u.derived))
3679 : {
3680 732 : bool m;
3681 732 : gfc_actual_arglist *arg_null = NULL;
3682 :
3683 732 : actual->expr = comp_tail->val;
3684 732 : comp_tail->val = NULL;
3685 :
3686 732 : m = gfc_convert_to_structure_constructor (NULL,
3687 : comp->ts.u.derived, &comp_tail->val,
3688 732 : comp->ts.u.derived->attr.zero_comp
3689 : ? &arg_null : &actual, true);
3690 732 : if (!m)
3691 0 : goto cleanup;
3692 :
3693 732 : if (comp->ts.u.derived->attr.zero_comp)
3694 : {
3695 126 : comp = comp->next;
3696 126 : continue;
3697 : }
3698 : }
3699 :
3700 606 : if (comp)
3701 8938 : comp = comp->next;
3702 10279 : if (parent && !comp)
3703 : break;
3704 :
3705 9674 : if (actual)
3706 9673 : actual = actual->next;
3707 : }
3708 :
3709 7132 : if (!build_actual_constructor (&comp_head, &ctor_head, sym))
3710 5 : goto cleanup;
3711 :
3712 : /* No component should be left, as this should have caused an error in the
3713 : loop constructing the component-list (name that does not correspond to any
3714 : component in the structure definition). */
3715 7127 : if (comp_head && sym->attr.extension)
3716 : {
3717 2 : for (comp_iter = comp_head; comp_iter; comp_iter = comp_iter->next)
3718 : {
3719 1 : gfc_error ("component %qs at %L has already been set by a "
3720 : "parent derived type constructor", comp_iter->name,
3721 : &comp_iter->where);
3722 : }
3723 1 : goto cleanup;
3724 : }
3725 : else
3726 7126 : gcc_assert (!comp_head);
3727 :
3728 7126 : if (parent)
3729 : {
3730 732 : expr = gfc_get_structure_constructor_expr (BT_DERIVED, 0, &gfc_current_locus);
3731 732 : expr->ts.u.derived = sym;
3732 732 : expr->value.constructor = ctor_head;
3733 732 : *cexpr = expr;
3734 : }
3735 : else
3736 : {
3737 6394 : expr->ts.u.derived = sym;
3738 6394 : expr->ts.kind = 0;
3739 6394 : expr->ts.type = BT_DERIVED;
3740 6394 : expr->value.constructor = ctor_head;
3741 6394 : expr->expr_type = EXPR_STRUCTURE;
3742 : }
3743 :
3744 7126 : gfc_current_locus = old_locus;
3745 7126 : if (parent)
3746 732 : *arglist = actual;
3747 : return true;
3748 :
3749 21 : cleanup:
3750 21 : gfc_current_locus = old_locus;
3751 :
3752 45 : for (comp_iter = comp_head; comp_iter; )
3753 : {
3754 24 : gfc_structure_ctor_component *next = comp_iter->next;
3755 24 : gfc_free_structure_ctor_component (comp_iter);
3756 24 : comp_iter = next;
3757 : }
3758 21 : gfc_constructor_free (ctor_head);
3759 :
3760 21 : return false;
3761 : }
3762 :
3763 :
3764 : match
3765 60 : gfc_match_structure_constructor (gfc_symbol *sym, gfc_symtree *symtree,
3766 : gfc_expr **result)
3767 : {
3768 60 : match m;
3769 60 : gfc_expr *e;
3770 60 : bool t = true;
3771 :
3772 60 : e = gfc_get_expr ();
3773 60 : e->expr_type = EXPR_FUNCTION;
3774 60 : e->symtree = symtree;
3775 60 : e->where = gfc_current_locus;
3776 :
3777 60 : gcc_assert (gfc_fl_struct (sym->attr.flavor)
3778 : && symtree->n.sym->attr.flavor == FL_PROCEDURE);
3779 60 : e->value.function.esym = sym;
3780 60 : e->symtree->n.sym->attr.generic = 1;
3781 :
3782 60 : m = gfc_match_actual_arglist (0, &e->value.function.actual);
3783 60 : if (m != MATCH_YES)
3784 : {
3785 0 : gfc_free_expr (e);
3786 0 : return m;
3787 : }
3788 :
3789 60 : if (!gfc_convert_to_structure_constructor (e, sym, NULL, NULL, false))
3790 : {
3791 1 : gfc_free_expr (e);
3792 1 : return MATCH_ERROR;
3793 : }
3794 :
3795 : /* If a structure constructor is in a DATA statement, then each entity
3796 : in the structure constructor must be a constant. Try to reduce the
3797 : expression here. */
3798 59 : if (gfc_in_match_data ())
3799 59 : t = gfc_reduce_init_expr (e);
3800 :
3801 59 : if (t)
3802 : {
3803 49 : *result = e;
3804 49 : return MATCH_YES;
3805 : }
3806 : else
3807 : {
3808 10 : gfc_free_expr (e);
3809 10 : return MATCH_ERROR;
3810 : }
3811 : }
3812 :
3813 :
3814 : /* If the symbol is an implicit do loop index and implicitly typed,
3815 : it should not be host associated. Provide a symtree from the
3816 : current namespace. */
3817 : static match
3818 6816065 : check_for_implicit_index (gfc_symtree **st, gfc_symbol **sym)
3819 : {
3820 6816065 : if ((*sym)->attr.flavor == FL_VARIABLE
3821 1979380 : && (*sym)->ns != gfc_current_ns
3822 60053 : && (*sym)->attr.implied_index
3823 588 : && (*sym)->attr.implicit_type
3824 32 : && !(*sym)->attr.use_assoc)
3825 : {
3826 32 : int i;
3827 32 : i = gfc_get_sym_tree ((*sym)->name, NULL, st, false);
3828 32 : if (i)
3829 : return MATCH_ERROR;
3830 32 : *sym = (*st)->n.sym;
3831 : }
3832 : return MATCH_YES;
3833 : }
3834 :
3835 :
3836 : /* Procedure pointer as function result: Replace the function symbol by the
3837 : auto-generated hidden result variable named "ppr@". */
3838 :
3839 : static bool
3840 5092024 : replace_hidden_procptr_result (gfc_symbol **sym, gfc_symtree **st)
3841 : {
3842 : /* Check for procedure pointer result variable. */
3843 5092024 : if ((*sym)->attr.function && !(*sym)->attr.external
3844 1391792 : && (*sym)->result && (*sym)->result != *sym
3845 10599 : && (*sym)->result->attr.proc_pointer
3846 337 : && (*sym) == gfc_current_ns->proc_name
3847 285 : && (*sym) == (*sym)->result->ns->proc_name
3848 285 : && strcmp ("ppr@", (*sym)->result->name) == 0)
3849 : {
3850 : /* Automatic replacement with "hidden" result variable. */
3851 285 : (*sym)->result->attr.referenced = (*sym)->attr.referenced;
3852 285 : *sym = (*sym)->result;
3853 285 : *st = gfc_find_symtree ((*sym)->ns->sym_root, (*sym)->name);
3854 285 : return true;
3855 : }
3856 : return false;
3857 : }
3858 :
3859 :
3860 : /* Matches a variable name followed by anything that might follow it--
3861 : array reference, argument list of a function, etc. */
3862 :
3863 : match
3864 4203310 : gfc_match_rvalue (gfc_expr **result)
3865 : {
3866 4203310 : gfc_actual_arglist *actual_arglist;
3867 4203310 : char name[GFC_MAX_SYMBOL_LEN + 1], argname[GFC_MAX_SYMBOL_LEN + 1];
3868 4203310 : gfc_state_data *st;
3869 4203310 : gfc_symbol *sym;
3870 4203310 : gfc_symtree *symtree;
3871 4203310 : locus where, old_loc;
3872 4203310 : gfc_expr *e;
3873 4203310 : match m, m2;
3874 4203310 : int i;
3875 4203310 : gfc_typespec *ts;
3876 4203310 : bool implicit_char;
3877 4203310 : gfc_ref *ref;
3878 4203310 : gfc_symtree *pdt_st;
3879 :
3880 4203310 : m = gfc_match ("%%loc");
3881 4203310 : if (m == MATCH_YES)
3882 : {
3883 10878 : if (!gfc_notify_std (GFC_STD_LEGACY, "%%LOC() as an rvalue at %C"))
3884 : return MATCH_ERROR;
3885 10877 : strncpy (name, "loc", 4);
3886 : }
3887 :
3888 : else
3889 : {
3890 4192432 : m = gfc_match_name (name);
3891 4192432 : if (m != MATCH_YES)
3892 : return m;
3893 : }
3894 :
3895 : /* Check if the symbol exists. */
3896 4000532 : if (gfc_find_sym_tree (name, NULL, 1, &symtree))
3897 : return MATCH_ERROR;
3898 :
3899 : /* If the symbol doesn't exist, create it unless the name matches a FL_STRUCT
3900 : type. For derived types we create a generic symbol which links to the
3901 : derived type symbol; STRUCTUREs are simpler and must not conflict with
3902 : variables. */
3903 4000530 : if (!symtree)
3904 176780 : if (gfc_find_sym_tree (gfc_dt_upper_string (name), NULL, 1, &symtree))
3905 : return MATCH_ERROR;
3906 4000530 : if (!symtree || symtree->n.sym->attr.flavor != FL_STRUCT)
3907 : {
3908 4000530 : if (gfc_find_state (COMP_INTERFACE)
3909 4000530 : && !gfc_current_ns->has_import_set)
3910 91696 : i = gfc_get_sym_tree (name, NULL, &symtree, false);
3911 : else
3912 3908834 : i = gfc_get_ha_sym_tree (name, &symtree);
3913 4000530 : if (i)
3914 : return MATCH_ERROR;
3915 : }
3916 :
3917 :
3918 4000530 : sym = symtree->n.sym;
3919 4000530 : e = NULL;
3920 4000530 : where = gfc_current_locus;
3921 :
3922 4000530 : replace_hidden_procptr_result (&sym, &symtree);
3923 :
3924 : /* If this is an implicit do loop index and implicitly typed,
3925 : it should not be host associated. */
3926 4000530 : m = check_for_implicit_index (&symtree, &sym);
3927 4000530 : if (m != MATCH_YES)
3928 : return m;
3929 :
3930 4000530 : gfc_set_sym_referenced (sym);
3931 4000530 : sym->attr.implied_index = 0;
3932 :
3933 4000530 : if (sym->attr.function && sym->result == sym)
3934 : {
3935 : /* See if this is a directly recursive function call. */
3936 699421 : gfc_gobble_whitespace ();
3937 699421 : if (sym->attr.recursive
3938 100 : && gfc_peek_ascii_char () == '('
3939 93 : && gfc_current_ns->proc_name == sym
3940 699428 : && !sym->attr.dimension)
3941 : {
3942 4 : gfc_error ("%qs at %C is the name of a recursive function "
3943 : "and so refers to the result variable. Use an "
3944 : "explicit RESULT variable for direct recursion "
3945 : "(12.5.2.1)", sym->name);
3946 4 : return MATCH_ERROR;
3947 : }
3948 :
3949 699417 : if (gfc_is_function_return_value (sym, gfc_current_ns))
3950 1701 : goto variable;
3951 :
3952 697716 : if (sym->attr.entry
3953 187 : && (sym->ns == gfc_current_ns
3954 27 : || sym->ns == gfc_current_ns->parent))
3955 : {
3956 180 : gfc_entry_list *el = NULL;
3957 :
3958 180 : for (el = sym->ns->entries; el; el = el->next)
3959 180 : if (sym == el->sym)
3960 180 : goto variable;
3961 : }
3962 : }
3963 :
3964 3998645 : if (gfc_matching_procptr_assignment)
3965 : {
3966 : /* It can be a procedure or a derived-type procedure or a not-yet-known
3967 : type. */
3968 1325 : if (sym->attr.flavor != FL_UNKNOWN
3969 983 : && sym->attr.flavor != FL_PROCEDURE
3970 : && sym->attr.flavor != FL_PARAMETER
3971 : && sym->attr.flavor != FL_VARIABLE)
3972 : {
3973 2 : gfc_error ("Symbol at %C is not appropriate for an expression");
3974 2 : return MATCH_ERROR;
3975 : }
3976 1323 : goto procptr0;
3977 : }
3978 :
3979 3997320 : if (sym->attr.function || sym->attr.external || sym->attr.intrinsic)
3980 711828 : goto function0;
3981 :
3982 3285492 : if (sym->attr.generic)
3983 67880 : goto generic_function;
3984 :
3985 3217612 : switch (sym->attr.flavor)
3986 : {
3987 1714953 : case FL_VARIABLE:
3988 1714953 : variable:
3989 1714953 : e = gfc_get_expr ();
3990 :
3991 1714953 : e->expr_type = EXPR_VARIABLE;
3992 1714953 : e->symtree = symtree;
3993 :
3994 1714953 : m = gfc_match_varspec (e, 0, false, true);
3995 1714953 : break;
3996 :
3997 218691 : case FL_PARAMETER:
3998 : /* A statement of the form "REAL, parameter :: a(0:10) = 1" will
3999 : end up here. Unfortunately, sym->value->expr_type is set to
4000 : EXPR_CONSTANT, and so the if () branch would be followed without
4001 : the !sym->as check. */
4002 218691 : if (sym->value && sym->value->expr_type != EXPR_ARRAY && !sym->as)
4003 184130 : e = gfc_copy_expr (sym->value);
4004 : else
4005 : {
4006 34561 : e = gfc_get_expr ();
4007 34561 : e->expr_type = EXPR_VARIABLE;
4008 : }
4009 :
4010 218691 : e->symtree = symtree;
4011 218691 : m = gfc_match_varspec (e, 0, false, true);
4012 :
4013 218691 : if (sym->ts.is_c_interop || sym->ts.is_iso_c)
4014 : break;
4015 :
4016 : /* Variable array references to derived type parameters cause
4017 : all sorts of headaches in simplification. Treating such
4018 : expressions as variable works just fine for all array
4019 : references. */
4020 170398 : if (sym->value && sym->ts.type == BT_DERIVED && e->ref)
4021 : {
4022 2827 : for (ref = e->ref; ref; ref = ref->next)
4023 2641 : if (ref->type == REF_ARRAY)
4024 : break;
4025 :
4026 2596 : if (ref == NULL || ref->u.ar.type == AR_FULL)
4027 : break;
4028 :
4029 1001 : ref = e->ref;
4030 1001 : e->ref = NULL;
4031 1001 : gfc_free_expr (e);
4032 1001 : e = gfc_get_expr ();
4033 1001 : e->expr_type = EXPR_VARIABLE;
4034 1001 : e->symtree = symtree;
4035 1001 : e->ref = ref;
4036 : }
4037 :
4038 : break;
4039 :
4040 0 : case FL_STRUCT:
4041 0 : case FL_DERIVED:
4042 0 : sym = gfc_use_derived (sym);
4043 0 : if (sym == NULL)
4044 : m = MATCH_ERROR;
4045 : else
4046 0 : goto generic_function;
4047 : break;
4048 :
4049 : /* If we're here, then the name is known to be the name of a
4050 : procedure, yet it is not sure to be the name of a function. */
4051 1000803 : case FL_PROCEDURE:
4052 :
4053 : /* Procedure Pointer Assignments. */
4054 1000803 : procptr0:
4055 1000803 : if (gfc_matching_procptr_assignment)
4056 : {
4057 1323 : gfc_gobble_whitespace ();
4058 1323 : if (!sym->attr.dimension && gfc_peek_ascii_char () == '(')
4059 : /* Parse functions returning a procptr. */
4060 210 : goto function0;
4061 :
4062 1113 : e = gfc_get_expr ();
4063 1113 : e->expr_type = EXPR_VARIABLE;
4064 1113 : e->symtree = symtree;
4065 1113 : m = gfc_match_varspec (e, 0, false, true);
4066 1045 : if (!e->ref && sym->attr.flavor == FL_UNKNOWN
4067 197 : && sym->ts.type == BT_UNKNOWN
4068 1300 : && !gfc_add_flavor (&sym->attr, FL_PROCEDURE, sym->name, NULL))
4069 : {
4070 : m = MATCH_ERROR;
4071 : break;
4072 : }
4073 : break;
4074 : }
4075 :
4076 999480 : if (sym->attr.subroutine)
4077 : {
4078 57 : gfc_error ("Unexpected use of subroutine name %qs at %C",
4079 : sym->name);
4080 57 : m = MATCH_ERROR;
4081 57 : break;
4082 : }
4083 :
4084 : /* At this point, the name has to be a non-statement function.
4085 : If the name is the same as the current function being
4086 : compiled, then we have a variable reference (to the function
4087 : result) if the name is non-recursive. */
4088 :
4089 999423 : st = gfc_enclosing_unit (NULL);
4090 :
4091 999423 : if (st != NULL
4092 955645 : && st->state == COMP_FUNCTION
4093 82567 : && st->sym == sym
4094 0 : && !sym->attr.recursive)
4095 : {
4096 0 : e = gfc_get_expr ();
4097 0 : e->symtree = symtree;
4098 0 : e->expr_type = EXPR_VARIABLE;
4099 :
4100 0 : m = gfc_match_varspec (e, 0, false, true);
4101 0 : break;
4102 : }
4103 :
4104 : /* Match a function reference. */
4105 999423 : function0:
4106 1711461 : m = gfc_match_actual_arglist (0, &actual_arglist);
4107 1711461 : if (m == MATCH_NO)
4108 : {
4109 590654 : if (sym->attr.proc == PROC_ST_FUNCTION)
4110 1 : gfc_error ("Statement function %qs requires argument list at %C",
4111 : sym->name);
4112 : else
4113 590653 : gfc_error ("Function %qs requires an argument list at %C",
4114 : sym->name);
4115 :
4116 : m = MATCH_ERROR;
4117 : break;
4118 : }
4119 :
4120 1120807 : if (m != MATCH_YES)
4121 : {
4122 : m = MATCH_ERROR;
4123 : break;
4124 : }
4125 :
4126 : /* Check to see if this is a PDT constructor. The format of these
4127 : constructors is rather unusual:
4128 : name [(type_params)](component_values)
4129 : where, component_values excludes the type_params. With the present
4130 : gfortran representation this is rather awkward because the two are not
4131 : distinguished, other than by their attributes.
4132 :
4133 : Even if 'name' is that of a PDT template, priority has to be given to
4134 : specific procedures, other than the constructor, in the generic
4135 : interface. */
4136 :
4137 1088655 : gfc_gobble_whitespace ();
4138 1088655 : gfc_find_sym_tree (gfc_dt_upper_string (name), NULL, 1, &pdt_st);
4139 10830 : if (sym->attr.generic && pdt_st != NULL
4140 1097529 : && !(sym->generic->next && gfc_peek_ascii_char() != '('))
4141 : {
4142 8587 : gfc_symbol *pdt_sym;
4143 8587 : gfc_actual_arglist *ctr_arglist = NULL, *tmp;
4144 8587 : gfc_component *c;
4145 :
4146 : /* Use the template. */
4147 8587 : if (pdt_st->n.sym && pdt_st->n.sym->attr.pdt_template)
4148 : {
4149 959 : bool type_spec_list = false;
4150 959 : pdt_sym = pdt_st->n.sym;
4151 959 : gfc_gobble_whitespace ();
4152 : /* Look for a second actual arglist. If present, try the first
4153 : for the type parameters. Otherwise, or if there is no match,
4154 : depend on default values by setting the type parameters to
4155 : NULL. */
4156 959 : if (gfc_peek_ascii_char() == '(')
4157 213 : type_spec_list = true;
4158 959 : if (!actual_arglist && !type_spec_list)
4159 : {
4160 3 : gfc_error_now ("F2023 R755: The empty type specification at %C "
4161 : "is not allowed");
4162 3 : m = MATCH_ERROR;
4163 3 : break;
4164 : }
4165 : /* Generate this instance using the type parameters from the
4166 : first argument list and return the parameter list in
4167 : ctr_arglist. */
4168 956 : m = gfc_get_pdt_instance (actual_arglist, &pdt_sym, &ctr_arglist);
4169 956 : if (m != MATCH_YES || !ctr_arglist)
4170 : {
4171 37 : if (ctr_arglist)
4172 0 : gfc_free_actual_arglist (ctr_arglist);
4173 : /* See if all the type parameters have default values. */
4174 37 : m = gfc_get_pdt_instance (NULL, &pdt_sym, &ctr_arglist);
4175 37 : if (m != MATCH_YES)
4176 : {
4177 : m = MATCH_NO;
4178 : break;
4179 : }
4180 : }
4181 :
4182 : /* Now match the component_values if the type parameters were
4183 : present. */
4184 947 : if (type_spec_list)
4185 : {
4186 213 : m = gfc_match_actual_arglist (0, &actual_arglist);
4187 213 : if (m != MATCH_YES)
4188 : {
4189 : m = MATCH_ERROR;
4190 : break;
4191 : }
4192 : }
4193 :
4194 : /* Make sure that the component names are in place so that this
4195 : list can be safely appended to the type parameters. */
4196 947 : tmp = actual_arglist;
4197 3173 : for (c = pdt_sym->components; c && tmp; c = c->next)
4198 : {
4199 2226 : if (c->attr.pdt_kind || c->attr.pdt_len)
4200 1181 : continue;
4201 1045 : tmp->name = c->name;
4202 1045 : tmp = tmp->next;
4203 : }
4204 :
4205 947 : gfc_find_sym_tree (gfc_dt_lower_string (pdt_sym->name),
4206 : NULL, 1, &symtree);
4207 947 : if (!symtree)
4208 : {
4209 432 : gfc_get_ha_sym_tree (gfc_dt_lower_string (pdt_sym->name) ,
4210 : &symtree);
4211 432 : symtree->n.sym = pdt_sym;
4212 432 : symtree->n.sym->ts.u.derived = pdt_sym;
4213 432 : symtree->n.sym->ts.type = BT_DERIVED;
4214 : }
4215 :
4216 947 : if (type_spec_list)
4217 : {
4218 : /* Append the type_params and the component_values. */
4219 239 : for (tmp = ctr_arglist; tmp && tmp->next;)
4220 : tmp = tmp->next;
4221 213 : tmp->next = actual_arglist;
4222 213 : actual_arglist = ctr_arglist;
4223 213 : tmp = actual_arglist;
4224 : /* Can now add all the component names. */
4225 697 : for (c = pdt_sym->components; c && tmp; c = c->next)
4226 : {
4227 484 : tmp->name = c->name;
4228 484 : tmp = tmp->next;
4229 : }
4230 : }
4231 : }
4232 : }
4233 :
4234 1088643 : gfc_get_ha_sym_tree (name, &symtree); /* Can't fail */
4235 1088643 : sym = symtree->n.sym;
4236 :
4237 1088643 : replace_hidden_procptr_result (&sym, &symtree);
4238 :
4239 1088643 : e = gfc_get_expr ();
4240 1088643 : e->symtree = symtree;
4241 1088643 : e->expr_type = EXPR_FUNCTION;
4242 1088643 : e->value.function.actual = actual_arglist;
4243 1088643 : e->where = gfc_current_locus;
4244 :
4245 1088643 : if (sym->ts.type == BT_CLASS && sym->attr.class_ok
4246 206 : && CLASS_DATA (sym)->as)
4247 : {
4248 91 : e->rank = CLASS_DATA (sym)->as->rank;
4249 91 : e->corank = CLASS_DATA (sym)->as->corank;
4250 : }
4251 1088552 : else if (sym->as != NULL)
4252 : {
4253 1139 : e->rank = sym->as->rank;
4254 1139 : e->corank = sym->as->corank;
4255 : }
4256 :
4257 1088643 : if (!sym->attr.function
4258 1088643 : && !gfc_add_function (&sym->attr, sym->name, NULL))
4259 : {
4260 : m = MATCH_ERROR;
4261 : break;
4262 : }
4263 :
4264 : /* Check here for the existence of at least one argument for the
4265 : iso_c_binding functions C_LOC, C_FUNLOC, and C_ASSOCIATED. */
4266 1088643 : if (sym->attr.is_iso_c == 1
4267 2 : && (sym->from_intmod == INTMOD_ISO_C_BINDING
4268 2 : && (sym->intmod_sym_id == ISOCBINDING_LOC
4269 2 : || sym->intmod_sym_id == ISOCBINDING_F_C_STRING
4270 2 : || sym->intmod_sym_id == ISOCBINDING_FUNLOC
4271 2 : || sym->intmod_sym_id == ISOCBINDING_ASSOCIATED)))
4272 : {
4273 : /* make sure we were given a param */
4274 0 : if (actual_arglist == NULL)
4275 : {
4276 0 : gfc_error ("Missing argument to %qs at %C", sym->name);
4277 0 : m = MATCH_ERROR;
4278 0 : break;
4279 : }
4280 : }
4281 :
4282 1088643 : if (sym->result == NULL)
4283 384471 : sym->result = sym;
4284 :
4285 1088643 : gfc_gobble_whitespace ();
4286 : /* F08:C612. */
4287 1088643 : if (gfc_peek_ascii_char() == '%')
4288 : {
4289 12 : gfc_error ("The leftmost part-ref in a data-ref cannot be a "
4290 : "function reference at %C");
4291 12 : m = MATCH_ERROR;
4292 12 : break;
4293 : }
4294 :
4295 : m = MATCH_YES;
4296 : break;
4297 :
4298 284843 : case FL_UNKNOWN:
4299 :
4300 : /* Special case for derived type variables that get their types
4301 : via an IMPLICIT statement. This can't wait for the
4302 : resolution phase. */
4303 :
4304 284843 : old_loc = gfc_current_locus;
4305 284843 : if (gfc_match_member_sep (sym) == MATCH_YES
4306 10156 : && sym->ts.type == BT_UNKNOWN
4307 284848 : && gfc_get_default_type (sym->name, sym->ns)->type == BT_DERIVED)
4308 0 : gfc_set_default_type (sym, 0, sym->ns);
4309 284843 : gfc_current_locus = old_loc;
4310 :
4311 : /* If the symbol has a (co)dimension attribute, the expression is a
4312 : variable. */
4313 :
4314 284843 : if (sym->attr.dimension || sym->attr.codimension)
4315 : {
4316 35195 : if (!gfc_add_flavor (&sym->attr, FL_VARIABLE, sym->name, NULL))
4317 : {
4318 : m = MATCH_ERROR;
4319 : break;
4320 : }
4321 :
4322 35195 : e = gfc_get_expr ();
4323 35195 : e->symtree = symtree;
4324 35195 : e->expr_type = EXPR_VARIABLE;
4325 35195 : m = gfc_match_varspec (e, 0, false, true);
4326 35195 : break;
4327 : }
4328 :
4329 249648 : if (sym->ts.type == BT_CLASS && sym->attr.class_ok
4330 4723 : && (CLASS_DATA (sym)->attr.dimension
4331 3298 : || CLASS_DATA (sym)->attr.codimension))
4332 : {
4333 1522 : if (!gfc_add_flavor (&sym->attr, FL_VARIABLE, sym->name, NULL))
4334 : {
4335 : m = MATCH_ERROR;
4336 : break;
4337 : }
4338 :
4339 1522 : e = gfc_get_expr ();
4340 1522 : e->symtree = symtree;
4341 1522 : e->expr_type = EXPR_VARIABLE;
4342 1522 : m = gfc_match_varspec (e, 0, false, true);
4343 1522 : break;
4344 : }
4345 :
4346 : /* Name is not an array, so we peek to see if a '(' implies a
4347 : function call or a substring reference. Otherwise the
4348 : variable is just a scalar. */
4349 :
4350 248126 : gfc_gobble_whitespace ();
4351 248126 : if (gfc_peek_ascii_char () != '(')
4352 : {
4353 : /* Assume a scalar variable */
4354 75812 : e = gfc_get_expr ();
4355 75812 : e->symtree = symtree;
4356 75812 : e->expr_type = EXPR_VARIABLE;
4357 :
4358 75812 : if (!gfc_add_flavor (&sym->attr, FL_VARIABLE, sym->name, NULL))
4359 : {
4360 : m = MATCH_ERROR;
4361 : break;
4362 : }
4363 :
4364 : /*FIXME:??? gfc_match_varspec does set this for us: */
4365 75812 : e->ts = sym->ts;
4366 75812 : m = gfc_match_varspec (e, 0, false, true);
4367 75812 : break;
4368 : }
4369 :
4370 : /* See if this is a function reference with a keyword argument
4371 : as first argument. We do this because otherwise a spurious
4372 : symbol would end up in the symbol table. */
4373 :
4374 172314 : old_loc = gfc_current_locus;
4375 172314 : m2 = gfc_match (" ( %n =", argname);
4376 172314 : gfc_current_locus = old_loc;
4377 :
4378 172314 : e = gfc_get_expr ();
4379 172314 : e->symtree = symtree;
4380 :
4381 172314 : if (m2 != MATCH_YES)
4382 : {
4383 : /* Try to figure out whether we're dealing with a character type.
4384 : We're peeking ahead here, because we don't want to call
4385 : match_substring if we're dealing with an implicitly typed
4386 : non-character variable. */
4387 171233 : implicit_char = false;
4388 171233 : if (sym->ts.type == BT_UNKNOWN)
4389 : {
4390 166533 : ts = gfc_get_default_type (sym->name, NULL);
4391 166533 : if (ts->type == BT_CHARACTER)
4392 : implicit_char = true;
4393 : }
4394 :
4395 : /* See if this could possibly be a substring reference of a name
4396 : that we're not sure is a variable yet. */
4397 :
4398 171216 : if ((implicit_char || sym->ts.type == BT_CHARACTER)
4399 1375 : && match_substring (sym->ts.u.cl, 0, &e->ref, false) == MATCH_YES)
4400 : {
4401 :
4402 911 : e->expr_type = EXPR_VARIABLE;
4403 :
4404 911 : if (sym->attr.flavor != FL_VARIABLE
4405 911 : && !gfc_add_flavor (&sym->attr, FL_VARIABLE,
4406 : sym->name, NULL))
4407 : {
4408 : m = MATCH_ERROR;
4409 : break;
4410 : }
4411 :
4412 911 : if (sym->ts.type == BT_UNKNOWN
4413 911 : && !gfc_set_default_type (sym, 1, NULL))
4414 : {
4415 : m = MATCH_ERROR;
4416 : break;
4417 : }
4418 :
4419 911 : e->ts = sym->ts;
4420 911 : if (e->ref)
4421 886 : e->ts.u.cl = NULL;
4422 : m = MATCH_YES;
4423 : break;
4424 : }
4425 : }
4426 :
4427 : /* Give up, assume we have a function. */
4428 :
4429 171403 : gfc_get_sym_tree (name, NULL, &symtree, false); /* Can't fail */
4430 171403 : sym = symtree->n.sym;
4431 171403 : e->expr_type = EXPR_FUNCTION;
4432 :
4433 171403 : if (!sym->attr.function
4434 171403 : && !gfc_add_function (&sym->attr, sym->name, NULL))
4435 : {
4436 : m = MATCH_ERROR;
4437 : break;
4438 : }
4439 :
4440 171403 : sym->result = sym;
4441 :
4442 171403 : m = gfc_match_actual_arglist (0, &e->value.function.actual);
4443 171403 : if (m == MATCH_NO)
4444 0 : gfc_error ("Missing argument list in function %qs at %C", sym->name);
4445 :
4446 171403 : if (m != MATCH_YES)
4447 : {
4448 : m = MATCH_ERROR;
4449 : break;
4450 : }
4451 :
4452 : /* If our new function returns a character, array or structure
4453 : type, it might have subsequent references. */
4454 :
4455 171273 : m = gfc_match_varspec (e, 0, false, true);
4456 171273 : if (m == MATCH_NO)
4457 : m = MATCH_YES;
4458 :
4459 : break;
4460 :
4461 67880 : generic_function:
4462 : /* Look for symbol first; if not found, look for STRUCTURE type symbol
4463 : specially. Creates a generic symbol for derived types. */
4464 67880 : gfc_find_sym_tree (name, NULL, 1, &symtree);
4465 67880 : if (!symtree)
4466 0 : gfc_find_sym_tree (gfc_dt_upper_string (name), NULL, 1, &symtree);
4467 67880 : if (!symtree || symtree->n.sym->attr.flavor != FL_STRUCT)
4468 67880 : gfc_get_sym_tree (name, NULL, &symtree, false); /* Can't fail */
4469 :
4470 67880 : e = gfc_get_expr ();
4471 67880 : e->symtree = symtree;
4472 67880 : e->expr_type = EXPR_FUNCTION;
4473 :
4474 67880 : if (gfc_fl_struct (sym->attr.flavor))
4475 : {
4476 0 : e->value.function.esym = sym;
4477 0 : e->symtree->n.sym->attr.generic = 1;
4478 : }
4479 :
4480 67880 : m = gfc_match_actual_arglist (0, &e->value.function.actual);
4481 67880 : break;
4482 :
4483 : case FL_NAMELIST:
4484 : m = MATCH_ERROR;
4485 : break;
4486 :
4487 5 : default:
4488 5 : gfc_error ("Symbol at %C is not appropriate for an expression");
4489 5 : return MATCH_ERROR;
4490 : }
4491 :
4492 : /* Scan for possible inquiry references. */
4493 81 : if (m == MATCH_YES
4494 3375797 : && e->expr_type == EXPR_VARIABLE
4495 4146835 : && gfc_peek_ascii_char () == '%')
4496 : {
4497 14 : m = gfc_match_varspec (e, 0, false, false);
4498 14 : if (m == MATCH_NO)
4499 : m = MATCH_YES;
4500 : }
4501 :
4502 4000519 : if (m == MATCH_YES)
4503 : {
4504 3375797 : e->where = where;
4505 3375797 : *result = e;
4506 : }
4507 : else
4508 624722 : gfc_free_expr (e);
4509 :
4510 : return m;
4511 : }
4512 :
4513 :
4514 : /* Match a variable, i.e. something that can be assigned to. This
4515 : starts as a symbol, can be a structure component or an array
4516 : reference. It can be a function if the function doesn't have a
4517 : separate RESULT variable. If the symbol has not been previously
4518 : seen, we assume it is a variable.
4519 :
4520 : This function is called by two interface functions:
4521 : gfc_match_variable, which has host_flag = 1, and
4522 : gfc_match_equiv_variable, with host_flag = 0, to restrict the
4523 : match of the symbol to the local scope. */
4524 :
4525 : static match
4526 2815561 : match_variable (gfc_expr **result, int equiv_flag, int host_flag)
4527 : {
4528 2815561 : gfc_symbol *sym, *dt_sym;
4529 2815561 : gfc_symtree *st;
4530 2815561 : gfc_expr *expr;
4531 2815561 : locus where, old_loc;
4532 2815561 : match m;
4533 :
4534 2815561 : *result = NULL;
4535 :
4536 : /* Since nothing has any business being an lvalue in a module
4537 : specification block, an interface block or a contains section,
4538 : we force the changed_symbols mechanism to work by setting
4539 : host_flag to 0. This prevents valid symbols that have the name
4540 : of keywords, such as 'end', being turned into variables by
4541 : failed matching to assignments for, e.g., END INTERFACE. */
4542 2815561 : if (gfc_current_state () == COMP_MODULE
4543 2815561 : || gfc_current_state () == COMP_SUBMODULE
4544 : || gfc_current_state () == COMP_INTERFACE
4545 : || gfc_current_state () == COMP_CONTAINS)
4546 192644 : host_flag = 0;
4547 :
4548 2815561 : where = gfc_current_locus;
4549 2815561 : m = gfc_match_sym_tree (&st, host_flag);
4550 2815560 : if (m != MATCH_YES)
4551 : return m;
4552 :
4553 2815535 : sym = st->n.sym;
4554 :
4555 : /* If this is an implicit do loop index and implicitly typed,
4556 : it should not be host associated. */
4557 2815535 : m = check_for_implicit_index (&st, &sym);
4558 2815535 : if (m != MATCH_YES)
4559 : return m;
4560 :
4561 2815535 : sym->attr.implied_index = 0;
4562 :
4563 2815535 : gfc_set_sym_referenced (sym);
4564 :
4565 : /* STRUCTUREs may share names with variables, but derived types may not. */
4566 14174 : if (sym->attr.flavor == FL_PROCEDURE && sym->generic
4567 2815601 : && (dt_sym = gfc_find_dt_in_generic (sym)))
4568 : {
4569 5 : if (dt_sym->attr.flavor == FL_DERIVED)
4570 5 : gfc_error ("Derived type %qs cannot be used as a variable at %C",
4571 : sym->name);
4572 5 : return MATCH_ERROR;
4573 : }
4574 :
4575 2815530 : switch (sym->attr.flavor)
4576 : {
4577 : case FL_VARIABLE:
4578 : /* Everything is alright. */
4579 : break;
4580 :
4581 2534934 : case FL_UNKNOWN:
4582 2534934 : {
4583 2534934 : sym_flavor flavor = FL_UNKNOWN;
4584 :
4585 2534934 : gfc_gobble_whitespace ();
4586 :
4587 2534934 : if (sym->attr.external || sym->attr.procedure
4588 2534902 : || sym->attr.function || sym->attr.subroutine)
4589 : flavor = FL_PROCEDURE;
4590 :
4591 : /* If it is not a procedure, is not typed and is host associated,
4592 : we cannot give it a flavor yet. */
4593 2534902 : else if (sym->ns == gfc_current_ns->parent
4594 2768 : && sym->ts.type == BT_UNKNOWN)
4595 : break;
4596 :
4597 : /* These are definitive indicators that this is a variable. */
4598 3375493 : else if (gfc_peek_ascii_char () != '(' || sym->ts.type != BT_UNKNOWN
4599 3357774 : || sym->attr.pointer || sym->as != NULL)
4600 : flavor = FL_VARIABLE;
4601 :
4602 : if (flavor != FL_UNKNOWN
4603 1712666 : && !gfc_add_flavor (&sym->attr, flavor, sym->name, NULL))
4604 : return MATCH_ERROR;
4605 : }
4606 : break;
4607 :
4608 17 : case FL_PARAMETER:
4609 17 : if (equiv_flag)
4610 : {
4611 0 : gfc_error ("Named constant at %C in an EQUIVALENCE");
4612 0 : return MATCH_ERROR;
4613 : }
4614 17 : if (gfc_in_match_data())
4615 : {
4616 4 : gfc_error ("PARAMETER %qs shall not appear in a DATA statement at %C",
4617 : sym->name);
4618 4 : return MATCH_ERROR;
4619 : }
4620 : /* Otherwise this is checked for an error given in the
4621 : variable definition context checks. */
4622 : break;
4623 :
4624 14169 : case FL_PROCEDURE:
4625 : /* Check for a nonrecursive function result variable. */
4626 14169 : if (sym->attr.function
4627 12158 : && (!sym->attr.external || sym->abr_modproc_decl)
4628 11761 : && sym->result == sym
4629 25581 : && (gfc_is_function_return_value (sym, gfc_current_ns)
4630 2169 : || (sym->attr.entry
4631 467 : && sym->ns == gfc_current_ns)
4632 1709 : || (sym->attr.entry
4633 7 : && sym->ns == gfc_current_ns->parent)))
4634 : {
4635 : /* If a function result is a derived type, then the derived
4636 : type may still have to be resolved. */
4637 :
4638 9710 : if (sym->ts.type == BT_DERIVED
4639 9710 : && gfc_use_derived (sym->ts.u.derived) == NULL)
4640 : return MATCH_ERROR;
4641 : break;
4642 : }
4643 :
4644 4459 : if (sym->attr.proc_pointer
4645 4459 : || replace_hidden_procptr_result (&sym, &st))
4646 : break;
4647 :
4648 : /* Fall through to error */
4649 2816 : gcc_fallthrough ();
4650 :
4651 2816 : default:
4652 2816 : gfc_error ("%qs at %C is not a variable", sym->name);
4653 2816 : return MATCH_ERROR;
4654 : }
4655 :
4656 : /* Special case for derived type variables that get their types
4657 : via an IMPLICIT statement. This can't wait for the
4658 : resolution phase. */
4659 :
4660 2812706 : {
4661 2812706 : gfc_namespace * implicit_ns;
4662 :
4663 2812706 : if (gfc_current_ns->proc_name == sym)
4664 : implicit_ns = gfc_current_ns;
4665 : else
4666 2803839 : implicit_ns = sym->ns;
4667 :
4668 2812706 : old_loc = gfc_current_locus;
4669 2812706 : if (gfc_match_member_sep (sym) == MATCH_YES
4670 20747 : && sym->ts.type == BT_UNKNOWN
4671 2812718 : && gfc_get_default_type (sym->name, implicit_ns)->type == BT_DERIVED)
4672 3 : gfc_set_default_type (sym, 0, implicit_ns);
4673 2812706 : gfc_current_locus = old_loc;
4674 : }
4675 :
4676 2812706 : expr = gfc_get_expr ();
4677 :
4678 2812706 : expr->expr_type = EXPR_VARIABLE;
4679 2812706 : expr->symtree = st;
4680 2812706 : expr->ts = sym->ts;
4681 :
4682 : /* Now see if we have to do more. */
4683 2812706 : m = gfc_match_varspec (expr, equiv_flag, false, false);
4684 2812706 : if (m != MATCH_YES)
4685 : {
4686 83 : gfc_free_expr (expr);
4687 83 : return m;
4688 : }
4689 :
4690 2812623 : expr->where = gfc_get_location_range (NULL, 0, &where, 1, &gfc_current_locus);
4691 2812623 : *result = expr;
4692 2812623 : return MATCH_YES;
4693 : }
4694 :
4695 :
4696 : match
4697 2812614 : gfc_match_variable (gfc_expr **result, int equiv_flag)
4698 : {
4699 2812614 : return match_variable (result, equiv_flag, 1);
4700 : }
4701 :
4702 :
4703 : match
4704 2947 : gfc_match_equiv_variable (gfc_expr **result)
4705 : {
4706 2947 : return match_variable (result, 1, 0);
4707 : }
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