1 /* Deal with I/O statements & related stuff.
2 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation,
4 Contributed by Andy Vaught
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 2, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
30 gfc_st_label format_asterisk =
31 { -1, ST_LABEL_FORMAT, ST_LABEL_FORMAT, NULL, 0,
32 {NULL, NULL}, NULL, NULL};
36 const char *name, *spec;
42 tag_file = { "FILE", " file = %e", BT_CHARACTER },
43 tag_status = { "STATUS", " status = %e", BT_CHARACTER},
44 tag_e_access = {"ACCESS", " access = %e", BT_CHARACTER},
45 tag_e_form = {"FORM", " form = %e", BT_CHARACTER},
46 tag_e_recl = {"RECL", " recl = %e", BT_INTEGER},
47 tag_e_blank = {"BLANK", " blank = %e", BT_CHARACTER},
48 tag_e_position = {"POSITION", " position = %e", BT_CHARACTER},
49 tag_e_action = {"ACTION", " action = %e", BT_CHARACTER},
50 tag_e_delim = {"DELIM", " delim = %e", BT_CHARACTER},
51 tag_e_pad = {"PAD", " pad = %e", BT_CHARACTER},
52 tag_unit = {"UNIT", " unit = %e", BT_INTEGER},
53 tag_advance = {"ADVANCE", " advance = %e", BT_CHARACTER},
54 tag_rec = {"REC", " rec = %e", BT_INTEGER},
55 tag_format = {"FORMAT", NULL, BT_CHARACTER},
56 tag_iomsg = {"IOMSG", " iomsg = %e", BT_CHARACTER},
57 tag_iostat = {"IOSTAT", " iostat = %v", BT_INTEGER},
58 tag_size = {"SIZE", " size = %v", BT_INTEGER},
59 tag_exist = {"EXIST", " exist = %v", BT_LOGICAL},
60 tag_opened = {"OPENED", " opened = %v", BT_LOGICAL},
61 tag_named = {"NAMED", " named = %v", BT_LOGICAL},
62 tag_name = {"NAME", " name = %v", BT_CHARACTER},
63 tag_number = {"NUMBER", " number = %v", BT_INTEGER},
64 tag_s_access = {"ACCESS", " access = %v", BT_CHARACTER},
65 tag_sequential = {"SEQUENTIAL", " sequential = %v", BT_CHARACTER},
66 tag_direct = {"DIRECT", " direct = %v", BT_CHARACTER},
67 tag_s_form = {"FORM", " form = %v", BT_CHARACTER},
68 tag_formatted = {"FORMATTED", " formatted = %v", BT_CHARACTER},
69 tag_unformatted = {"UNFORMATTED", " unformatted = %v", BT_CHARACTER},
70 tag_s_recl = {"RECL", " recl = %v", BT_INTEGER},
71 tag_nextrec = {"NEXTREC", " nextrec = %v", BT_INTEGER},
72 tag_s_blank = {"BLANK", " blank = %v", BT_CHARACTER},
73 tag_s_position = {"POSITION", " position = %v", BT_CHARACTER},
74 tag_s_action = {"ACTION", " action = %v", BT_CHARACTER},
75 tag_read = {"READ", " read = %v", BT_CHARACTER},
76 tag_write = {"WRITE", " write = %v", BT_CHARACTER},
77 tag_readwrite = {"READWRITE", " readwrite = %v", BT_CHARACTER},
78 tag_s_delim = {"DELIM", " delim = %v", BT_CHARACTER},
79 tag_s_pad = {"PAD", " pad = %v", BT_CHARACTER},
80 tag_iolength = {"IOLENGTH", " iolength = %v", BT_INTEGER},
81 tag_convert = {"CONVERT", " convert = %e", BT_CHARACTER},
82 tag_err = {"ERR", " err = %l", BT_UNKNOWN},
83 tag_end = {"END", " end = %l", BT_UNKNOWN},
84 tag_eor = {"EOR", " eor = %l", BT_UNKNOWN};
86 static gfc_dt *current_dt;
88 #define RESOLVE_TAG(x, y) if (resolve_tag(x, y) == FAILURE) return FAILURE;
91 /**************** Fortran 95 FORMAT parser *****************/
93 /* FORMAT tokens returned by format_lex(). */
96 FMT_NONE, FMT_UNKNOWN, FMT_SIGNED_INT, FMT_ZERO, FMT_POSINT, FMT_PERIOD,
97 FMT_COMMA, FMT_COLON, FMT_SLASH, FMT_DOLLAR, FMT_POS, FMT_LPAREN,
98 FMT_RPAREN, FMT_X, FMT_SIGN, FMT_BLANK, FMT_CHAR, FMT_P, FMT_IBOZ, FMT_F,
99 FMT_E, FMT_EXT, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END
103 /* Local variables for checking format strings. The saved_token is
104 used to back up by a single format token during the parsing
106 static char *format_string;
107 static int format_length, use_last_char;
109 static format_token saved_token;
112 { MODE_STRING, MODE_FORMAT, MODE_COPY }
116 /* Return the next character in the format string. */
119 next_char (int in_string)
131 if (mode == MODE_STRING)
132 c = *format_string++;
135 c = gfc_next_char_literal (in_string);
139 if (mode == MODE_COPY)
140 *format_string++ = c;
148 /* Back up one character position. Only works once. */
157 static int value = 0;
159 /* Simple lexical analyzer for getting the next token in a FORMAT
170 if (saved_token != FMT_NONE)
173 saved_token = FMT_NONE;
181 while (gfc_is_whitespace (c));
202 value = 10 * value + c - '0';
211 token = FMT_SIGNED_INT;
234 value = 10 * value + c - '0';
236 while (ISDIGIT (c) || gfc_is_whitespace(c));
239 token = zflag ? FMT_ZERO : FMT_POSINT;
264 if (c != 'L' && c != 'R')
284 if (c != 'P' && c != 'S')
292 if (c == 'N' || c == 'Z')
354 if (c == 'N' || c == 'S')
397 /* Check a format statement. The format string, either from a FORMAT
398 statement or a constant in an I/O statement has already been parsed
399 by itself, and we are checking it for validity. The dual origin
400 means that the warning message is a little less than great. */
405 const char *posint_required = _("Positive width required");
406 const char *period_required = _("Period required");
407 const char *nonneg_required = _("Nonnegative width required");
408 const char *unexpected_element = _("Unexpected element");
409 const char *unexpected_end = _("Unexpected end of format string");
418 saved_token = FMT_NONE;
426 error = _("Missing leading left parenthesis");
432 goto finished; /* Empty format is legal */
436 /* In this state, the next thing has to be a format item. */
460 /* Signed integer can only precede a P format. */
464 error = _("Expected P edit descriptor");
471 /* P requires a prior number. */
472 error = _("P descriptor requires leading scale factor");
476 /* X requires a prior number if we're being pedantic. */
477 if (gfc_notify_std (GFC_STD_GNU, "Extension: X descriptor "
478 "requires leading space count at %C")
488 goto extension_optional_comma;
497 if (gfc_notify_std (GFC_STD_GNU, "Extension: $ descriptor at %C")
500 if (t != FMT_RPAREN || level > 0)
502 error = _("$ must be the last specifier");
523 error = unexpected_end;
527 error = unexpected_element;
532 /* In this state, t must currently be a data descriptor.
533 Deal with things that can/must follow the descriptor. */
547 error = _("Repeat count cannot follow P descriptor");
562 error = posint_required;
578 error = posint_required;
585 error = period_required;
590 if (u != FMT_ZERO && u != FMT_POSINT)
592 error = nonneg_required;
599 /* Look for optional exponent. */
610 error = _("Positive exponent width required");
619 if (t != FMT_ZERO && t != FMT_POSINT)
621 error = nonneg_required;
628 error = period_required;
633 if (t != FMT_ZERO && t != FMT_POSINT)
635 error = nonneg_required;
642 if(mode == MODE_STRING)
644 format_string += value;
645 format_length -= value;
659 if (t != FMT_ZERO && t != FMT_POSINT)
661 error = nonneg_required;
673 if (t != FMT_ZERO && t != FMT_POSINT)
675 error = nonneg_required;
683 error = unexpected_element;
688 /* Between a descriptor and what comes next. */
707 error = unexpected_end;
711 if (gfc_notify_std (GFC_STD_GNU, "Extension: Missing comma at %C")
718 /* Optional comma is a weird between state where we've just finished
719 reading a colon, slash or P descriptor. */
733 /* Assume that we have another format item. */
740 extension_optional_comma:
741 /* As a GNU extension, permit a missing comma after a string literal. */
759 error = unexpected_end;
763 if (gfc_notify_std (GFC_STD_GNU, "Extension: Missing comma at %C")
773 /* Something went wrong. If the format we're checking is a string,
774 generate a warning, since the program is correct. If the format
775 is in a FORMAT statement, this messes up parsing, which is an
777 if (mode != MODE_STRING)
778 gfc_error ("%s in format string at %C", error);
781 gfc_warning ("%s in format string at %C", error);
783 /* TODO: More elaborate measures are needed to show where a problem
784 is within a format string that has been calculated. */
794 /* Given an expression node that is a constant string, see if it looks
795 like a format string. */
798 check_format_string (gfc_expr * e)
802 format_string = e->value.character.string;
807 /************ Fortran 95 I/O statement matchers *************/
809 /* Match a FORMAT statement. This amounts to actually parsing the
810 format descriptors in order to correctly locate the end of the
814 gfc_match_format (void)
819 if (gfc_current_ns->proc_name
820 && gfc_current_ns->proc_name->attr.flavor == FL_MODULE)
822 gfc_error ("Format statement in module main block at %C.");
826 if (gfc_statement_label == NULL)
828 gfc_error ("Missing format label at %C");
831 gfc_gobble_whitespace ();
836 start = gfc_current_locus;
838 if (check_format () == FAILURE)
841 if (gfc_match_eos () != MATCH_YES)
843 gfc_syntax_error (ST_FORMAT);
847 /* The label doesn't get created until after the statement is done
848 being matched, so we have to leave the string for later. */
850 gfc_current_locus = start; /* Back to the beginning */
853 new_st.op = EXEC_NOP;
856 e->expr_type = EXPR_CONSTANT;
857 e->ts.type = BT_CHARACTER;
858 e->ts.kind = gfc_default_character_kind;
860 e->value.character.string = format_string = gfc_getmem(format_length+1);
861 e->value.character.length = format_length;
862 gfc_statement_label->format = e;
865 check_format (); /* Guaranteed to succeed */
866 gfc_match_eos (); /* Guaranteed to succeed */
872 /* Match an expression I/O tag of some sort. */
875 match_etag (const io_tag * tag, gfc_expr ** v)
880 m = gfc_match (tag->spec, &result);
886 gfc_error ("Duplicate %s specification at %C", tag->name);
887 gfc_free_expr (result);
896 /* Match a variable I/O tag of some sort. */
899 match_vtag (const io_tag * tag, gfc_expr ** v)
904 m = gfc_match (tag->spec, &result);
910 gfc_error ("Duplicate %s specification at %C", tag->name);
911 gfc_free_expr (result);
915 if (result->symtree->n.sym->attr.intent == INTENT_IN)
917 gfc_error ("Variable tag cannot be INTENT(IN) at %C");
918 gfc_free_expr (result);
922 if (gfc_pure (NULL) && gfc_impure_variable (result->symtree->n.sym))
924 gfc_error ("Variable tag cannot be assigned in PURE procedure at %C");
925 gfc_free_expr (result);
934 /* Match I/O tags that cause variables to become redefined. */
937 match_out_tag(const io_tag *tag, gfc_expr **result)
941 m = match_vtag(tag, result);
943 gfc_check_do_variable((*result)->symtree);
949 /* Match a label I/O tag. */
952 match_ltag (const io_tag * tag, gfc_st_label ** label)
958 m = gfc_match (tag->spec, label);
959 if (m == MATCH_YES && old != 0)
961 gfc_error ("Duplicate %s label specification at %C", tag->name);
969 /* Do expression resolution and type-checking on an expression tag. */
972 resolve_tag (const io_tag * tag, gfc_expr * e)
978 if (gfc_resolve_expr (e) == FAILURE)
981 if (e->ts.type != tag->type && tag != &tag_format)
983 gfc_error ("%s tag at %L must be of type %s", tag->name,
984 &e->where, gfc_basic_typename (tag->type));
988 if (tag == &tag_format)
990 if (e->expr_type == EXPR_CONSTANT
991 && (e->ts.type != BT_CHARACTER
992 || e->ts.kind != gfc_default_character_kind))
994 gfc_error ("Constant expression in FORMAT tag at %L must be "
995 "of type default CHARACTER", &e->where);
999 /* If e's rank is zero and e is not an element of an array, it should be
1000 of integer or character type. The integer variable should be
1002 if (e->symtree == NULL || e->symtree->n.sym->as == NULL
1003 || e->symtree->n.sym->as->rank == 0)
1005 if (e->ts.type != BT_CHARACTER && e->ts.type != BT_INTEGER)
1007 gfc_error ("%s tag at %L must be of type %s or %s", tag->name,
1008 &e->where, gfc_basic_typename (BT_CHARACTER),
1009 gfc_basic_typename (BT_INTEGER));
1012 else if (e->ts.type == BT_INTEGER && e->expr_type == EXPR_VARIABLE)
1014 if (gfc_notify_std (GFC_STD_F95_DEL,
1015 "Obsolete: ASSIGNED variable in FORMAT tag at %L",
1016 &e->where) == FAILURE)
1018 if (e->symtree->n.sym->attr.assign != 1)
1020 gfc_error ("Variable '%s' at %L has not been assigned a "
1021 "format label", e->symtree->n.sym->name, &e->where);
1029 /* if rank is nonzero, we allow the type to be character under
1030 GFC_STD_GNU and other type under GFC_STD_LEGACY. It may be
1031 assigned an Hollerith constant. */
1032 if (e->ts.type == BT_CHARACTER)
1034 if (gfc_notify_std (GFC_STD_GNU,
1035 "Extension: Character array in FORMAT tag at %L",
1036 &e->where) == FAILURE)
1041 if (gfc_notify_std (GFC_STD_LEGACY,
1042 "Extension: Non-character in FORMAT tag at %L",
1043 &e->where) == FAILURE)
1053 gfc_error ("%s tag at %L must be scalar", tag->name, &e->where);
1057 if (tag == &tag_iomsg)
1059 if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: IOMSG tag at %L",
1060 &e->where) == FAILURE)
1064 if (tag == &tag_iostat && e->ts.kind != gfc_default_integer_kind)
1066 if (gfc_notify_std (GFC_STD_GNU, "Fortran 95 requires default "
1067 "INTEGER in IOSTAT tag at %L",
1068 &e->where) == FAILURE)
1072 if (tag == &tag_size && e->ts.kind != gfc_default_integer_kind)
1074 if (gfc_notify_std (GFC_STD_GNU, "Fortran 95 requires default "
1075 "INTEGER in SIZE tag at %L",
1076 &e->where) == FAILURE)
1080 if (tag == &tag_convert)
1082 if (gfc_notify_std (GFC_STD_GNU, "Extension: CONVERT tag at %L",
1083 &e->where) == FAILURE)
1092 /* Match a single tag of an OPEN statement. */
1095 match_open_element (gfc_open * open)
1099 m = match_etag (&tag_unit, &open->unit);
1102 m = match_out_tag (&tag_iomsg, &open->iomsg);
1105 m = match_out_tag (&tag_iostat, &open->iostat);
1108 m = match_etag (&tag_file, &open->file);
1111 m = match_etag (&tag_status, &open->status);
1114 m = match_etag (&tag_e_access, &open->access);
1117 m = match_etag (&tag_e_form, &open->form);
1120 m = match_etag (&tag_e_recl, &open->recl);
1123 m = match_etag (&tag_e_blank, &open->blank);
1126 m = match_etag (&tag_e_position, &open->position);
1129 m = match_etag (&tag_e_action, &open->action);
1132 m = match_etag (&tag_e_delim, &open->delim);
1135 m = match_etag (&tag_e_pad, &open->pad);
1138 m = match_ltag (&tag_err, &open->err);
1141 m = match_etag (&tag_convert, &open->convert);
1149 /* Free the gfc_open structure and all the expressions it contains. */
1152 gfc_free_open (gfc_open * open)
1158 gfc_free_expr (open->unit);
1159 gfc_free_expr (open->iomsg);
1160 gfc_free_expr (open->iostat);
1161 gfc_free_expr (open->file);
1162 gfc_free_expr (open->status);
1163 gfc_free_expr (open->access);
1164 gfc_free_expr (open->form);
1165 gfc_free_expr (open->recl);
1166 gfc_free_expr (open->blank);
1167 gfc_free_expr (open->position);
1168 gfc_free_expr (open->action);
1169 gfc_free_expr (open->delim);
1170 gfc_free_expr (open->pad);
1171 gfc_free_expr (open->convert);
1177 /* Resolve everything in a gfc_open structure. */
1180 gfc_resolve_open (gfc_open * open)
1183 RESOLVE_TAG (&tag_unit, open->unit);
1184 RESOLVE_TAG (&tag_iomsg, open->iomsg);
1185 RESOLVE_TAG (&tag_iostat, open->iostat);
1186 RESOLVE_TAG (&tag_file, open->file);
1187 RESOLVE_TAG (&tag_status, open->status);
1188 RESOLVE_TAG (&tag_e_access, open->access);
1189 RESOLVE_TAG (&tag_e_form, open->form);
1190 RESOLVE_TAG (&tag_e_recl, open->recl);
1192 RESOLVE_TAG (&tag_e_blank, open->blank);
1193 RESOLVE_TAG (&tag_e_position, open->position);
1194 RESOLVE_TAG (&tag_e_action, open->action);
1195 RESOLVE_TAG (&tag_e_delim, open->delim);
1196 RESOLVE_TAG (&tag_e_pad, open->pad);
1197 RESOLVE_TAG (&tag_convert, open->convert);
1199 if (gfc_reference_st_label (open->err, ST_LABEL_TARGET) == FAILURE)
1206 /* Match an OPEN statement. */
1209 gfc_match_open (void)
1214 m = gfc_match_char ('(');
1218 open = gfc_getmem (sizeof (gfc_open));
1220 m = match_open_element (open);
1222 if (m == MATCH_ERROR)
1226 m = gfc_match_expr (&open->unit);
1229 if (m == MATCH_ERROR)
1235 if (gfc_match_char (')') == MATCH_YES)
1237 if (gfc_match_char (',') != MATCH_YES)
1240 m = match_open_element (open);
1241 if (m == MATCH_ERROR)
1247 if (gfc_match_eos () == MATCH_NO)
1250 if (gfc_pure (NULL))
1252 gfc_error ("OPEN statement not allowed in PURE procedure at %C");
1256 new_st.op = EXEC_OPEN;
1257 new_st.ext.open = open;
1261 gfc_syntax_error (ST_OPEN);
1264 gfc_free_open (open);
1269 /* Free a gfc_close structure an all its expressions. */
1272 gfc_free_close (gfc_close * close)
1278 gfc_free_expr (close->unit);
1279 gfc_free_expr (close->iomsg);
1280 gfc_free_expr (close->iostat);
1281 gfc_free_expr (close->status);
1287 /* Match elements of a CLOSE statement. */
1290 match_close_element (gfc_close * close)
1294 m = match_etag (&tag_unit, &close->unit);
1297 m = match_etag (&tag_status, &close->status);
1300 m = match_out_tag (&tag_iomsg, &close->iomsg);
1303 m = match_out_tag (&tag_iostat, &close->iostat);
1306 m = match_ltag (&tag_err, &close->err);
1314 /* Match a CLOSE statement. */
1317 gfc_match_close (void)
1322 m = gfc_match_char ('(');
1326 close = gfc_getmem (sizeof (gfc_close));
1328 m = match_close_element (close);
1330 if (m == MATCH_ERROR)
1334 m = gfc_match_expr (&close->unit);
1337 if (m == MATCH_ERROR)
1343 if (gfc_match_char (')') == MATCH_YES)
1345 if (gfc_match_char (',') != MATCH_YES)
1348 m = match_close_element (close);
1349 if (m == MATCH_ERROR)
1355 if (gfc_match_eos () == MATCH_NO)
1358 if (gfc_pure (NULL))
1360 gfc_error ("CLOSE statement not allowed in PURE procedure at %C");
1364 new_st.op = EXEC_CLOSE;
1365 new_st.ext.close = close;
1369 gfc_syntax_error (ST_CLOSE);
1372 gfc_free_close (close);
1377 /* Resolve everything in a gfc_close structure. */
1380 gfc_resolve_close (gfc_close * close)
1383 RESOLVE_TAG (&tag_unit, close->unit);
1384 RESOLVE_TAG (&tag_iomsg, close->iomsg);
1385 RESOLVE_TAG (&tag_iostat, close->iostat);
1386 RESOLVE_TAG (&tag_status, close->status);
1388 if (gfc_reference_st_label (close->err, ST_LABEL_TARGET) == FAILURE)
1395 /* Free a gfc_filepos structure. */
1398 gfc_free_filepos (gfc_filepos * fp)
1401 gfc_free_expr (fp->unit);
1402 gfc_free_expr (fp->iomsg);
1403 gfc_free_expr (fp->iostat);
1408 /* Match elements of a REWIND, BACKSPACE, ENDFILE, or FLUSH statement. */
1411 match_file_element (gfc_filepos * fp)
1415 m = match_etag (&tag_unit, &fp->unit);
1418 m = match_out_tag (&tag_iomsg, &fp->iomsg);
1421 m = match_out_tag (&tag_iostat, &fp->iostat);
1424 m = match_ltag (&tag_err, &fp->err);
1432 /* Match the second half of the file-positioning statements, REWIND,
1433 BACKSPACE, ENDFILE, or the FLUSH statement. */
1436 match_filepos (gfc_statement st, gfc_exec_op op)
1441 fp = gfc_getmem (sizeof (gfc_filepos));
1443 if (gfc_match_char ('(') == MATCH_NO)
1445 m = gfc_match_expr (&fp->unit);
1446 if (m == MATCH_ERROR)
1454 m = match_file_element (fp);
1455 if (m == MATCH_ERROR)
1459 m = gfc_match_expr (&fp->unit);
1460 if (m == MATCH_ERROR)
1468 if (gfc_match_char (')') == MATCH_YES)
1470 if (gfc_match_char (',') != MATCH_YES)
1473 m = match_file_element (fp);
1474 if (m == MATCH_ERROR)
1481 if (gfc_match_eos () != MATCH_YES)
1484 if (gfc_pure (NULL))
1486 gfc_error ("%s statement not allowed in PURE procedure at %C",
1487 gfc_ascii_statement (st));
1493 new_st.ext.filepos = fp;
1497 gfc_syntax_error (st);
1500 gfc_free_filepos (fp);
1506 gfc_resolve_filepos (gfc_filepos * fp)
1509 RESOLVE_TAG (&tag_unit, fp->unit);
1510 RESOLVE_TAG (&tag_iostat, fp->iostat);
1511 RESOLVE_TAG (&tag_iomsg, fp->iomsg);
1512 if (gfc_reference_st_label (fp->err, ST_LABEL_TARGET) == FAILURE)
1519 /* Match the file positioning statements: ENDFILE, BACKSPACE, REWIND,
1520 and the FLUSH statement. */
1523 gfc_match_endfile (void)
1526 return match_filepos (ST_END_FILE, EXEC_ENDFILE);
1530 gfc_match_backspace (void)
1533 return match_filepos (ST_BACKSPACE, EXEC_BACKSPACE);
1537 gfc_match_rewind (void)
1540 return match_filepos (ST_REWIND, EXEC_REWIND);
1544 gfc_match_flush (void)
1546 if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: FLUSH statement at %C") == FAILURE)
1549 return match_filepos (ST_FLUSH, EXEC_FLUSH);
1552 /******************** Data Transfer Statements *********************/
1555 { M_READ, M_WRITE, M_PRINT, M_INQUIRE }
1559 /* Return a default unit number. */
1562 default_unit (io_kind k)
1571 return gfc_int_expr (unit);
1575 /* Match a unit specification for a data transfer statement. */
1578 match_dt_unit (io_kind k, gfc_dt * dt)
1582 if (gfc_match_char ('*') == MATCH_YES)
1584 if (dt->io_unit != NULL)
1587 dt->io_unit = default_unit (k);
1591 if (gfc_match_expr (&e) == MATCH_YES)
1593 if (dt->io_unit != NULL)
1606 gfc_error ("Duplicate UNIT specification at %C");
1611 /* Match a format specification. */
1614 match_dt_format (gfc_dt * dt)
1618 gfc_st_label *label;
1620 where = gfc_current_locus;
1622 if (gfc_match_char ('*') == MATCH_YES)
1624 if (dt->format_expr != NULL || dt->format_label != NULL)
1627 dt->format_label = &format_asterisk;
1631 if (gfc_match_st_label (&label) == MATCH_YES)
1633 if (dt->format_expr != NULL || dt->format_label != NULL)
1635 gfc_free_st_label (label);
1639 if (gfc_reference_st_label (label, ST_LABEL_FORMAT) == FAILURE)
1642 dt->format_label = label;
1646 if (gfc_match_expr (&e) == MATCH_YES)
1648 if (dt->format_expr != NULL || dt->format_label != NULL)
1653 dt->format_expr = e;
1657 gfc_current_locus = where; /* The only case where we have to restore */
1662 gfc_error ("Duplicate format specification at %C");
1667 /* Traverse a namelist that is part of a READ statement to make sure
1668 that none of the variables in the namelist are INTENT(IN). Returns
1669 nonzero if we find such a variable. */
1672 check_namelist (gfc_symbol * sym)
1676 for (p = sym->namelist; p; p = p->next)
1677 if (p->sym->attr.intent == INTENT_IN)
1679 gfc_error ("Symbol '%s' in namelist '%s' is INTENT(IN) at %C",
1680 p->sym->name, sym->name);
1688 /* Match a single data transfer element. */
1691 match_dt_element (io_kind k, gfc_dt * dt)
1693 char name[GFC_MAX_SYMBOL_LEN + 1];
1697 if (gfc_match (" unit =") == MATCH_YES)
1699 m = match_dt_unit (k, dt);
1704 if (gfc_match (" fmt =") == MATCH_YES)
1706 m = match_dt_format (dt);
1711 if (gfc_match (" nml = %n", name) == MATCH_YES)
1713 if (dt->namelist != NULL)
1715 gfc_error ("Duplicate NML specification at %C");
1719 if (gfc_find_symbol (name, NULL, 1, &sym))
1722 if (sym == NULL || sym->attr.flavor != FL_NAMELIST)
1724 gfc_error ("Symbol '%s' at %C must be a NAMELIST group name",
1725 sym != NULL ? sym->name : name);
1730 if (k == M_READ && check_namelist (sym))
1736 m = match_etag (&tag_rec, &dt->rec);
1739 m = match_out_tag (&tag_iomsg, &dt->iomsg);
1742 m = match_out_tag (&tag_iostat, &dt->iostat);
1745 m = match_ltag (&tag_err, &dt->err);
1747 dt->err_where = gfc_current_locus;
1750 m = match_etag (&tag_advance, &dt->advance);
1753 m = match_out_tag (&tag_size, &dt->size);
1757 m = match_ltag (&tag_end, &dt->end);
1762 gfc_error ("END tag at %C not allowed in output statement");
1765 dt->end_where = gfc_current_locus;
1770 m = match_ltag (&tag_eor, &dt->eor);
1772 dt->eor_where = gfc_current_locus;
1780 /* Free a data transfer structure and everything below it. */
1783 gfc_free_dt (gfc_dt * dt)
1789 gfc_free_expr (dt->io_unit);
1790 gfc_free_expr (dt->format_expr);
1791 gfc_free_expr (dt->rec);
1792 gfc_free_expr (dt->advance);
1793 gfc_free_expr (dt->iomsg);
1794 gfc_free_expr (dt->iostat);
1795 gfc_free_expr (dt->size);
1801 /* Resolve everything in a gfc_dt structure. */
1804 gfc_resolve_dt (gfc_dt * dt)
1808 RESOLVE_TAG (&tag_format, dt->format_expr);
1809 RESOLVE_TAG (&tag_rec, dt->rec);
1810 RESOLVE_TAG (&tag_advance, dt->advance);
1811 RESOLVE_TAG (&tag_iomsg, dt->iomsg);
1812 RESOLVE_TAG (&tag_iostat, dt->iostat);
1813 RESOLVE_TAG (&tag_size, dt->size);
1816 if (gfc_resolve_expr (e) == SUCCESS
1817 && (e->ts.type != BT_INTEGER
1818 && (e->ts.type != BT_CHARACTER
1819 || e->expr_type != EXPR_VARIABLE)))
1822 ("UNIT specification at %L must be an INTEGER expression or a "
1823 "CHARACTER variable", &e->where);
1827 if (e->ts.type == BT_CHARACTER)
1829 if (gfc_has_vector_index (e))
1831 gfc_error ("Internal unit with vector subscript at %L",
1837 if (e->rank && e->ts.type != BT_CHARACTER)
1839 gfc_error ("External IO UNIT cannot be an array at %L", &e->where);
1845 if (gfc_reference_st_label (dt->err, ST_LABEL_TARGET) == FAILURE)
1847 if (dt->err->defined == ST_LABEL_UNKNOWN)
1849 gfc_error ("ERR tag label %d at %L not defined",
1850 dt->err->value, &dt->err_where);
1857 if (gfc_reference_st_label (dt->end, ST_LABEL_TARGET) == FAILURE)
1859 if (dt->end->defined == ST_LABEL_UNKNOWN)
1861 gfc_error ("END tag label %d at %L not defined",
1862 dt->end->value, &dt->end_where);
1869 if (gfc_reference_st_label (dt->eor, ST_LABEL_TARGET) == FAILURE)
1871 if (dt->eor->defined == ST_LABEL_UNKNOWN)
1873 gfc_error ("EOR tag label %d at %L not defined",
1874 dt->eor->value, &dt->eor_where);
1879 /* Check the format label actually exists. */
1880 if (dt->format_label && dt->format_label != &format_asterisk
1881 && dt->format_label->defined == ST_LABEL_UNKNOWN)
1883 gfc_error ("FORMAT label %d at %L not defined", dt->format_label->value,
1884 &dt->format_label->where);
1891 /* Given an io_kind, return its name. */
1894 io_kind_name (io_kind k)
1913 gfc_internal_error ("io_kind_name(): bad I/O-kind");
1920 /* Match an IO iteration statement of the form:
1922 ( [<IO element> ,] <IO element>, I = <expr>, <expr> [, <expr> ] )
1924 which is equivalent to a single IO element. This function is
1925 mutually recursive with match_io_element(). */
1927 static match match_io_element (io_kind k, gfc_code **);
1930 match_io_iterator (io_kind k, gfc_code ** result)
1932 gfc_code *head, *tail, *new;
1940 old_loc = gfc_current_locus;
1942 if (gfc_match_char ('(') != MATCH_YES)
1945 m = match_io_element (k, &head);
1948 if (m != MATCH_YES || gfc_match_char (',') != MATCH_YES)
1954 /* Can't be anything but an IO iterator. Build a list. */
1955 iter = gfc_get_iterator ();
1959 m = gfc_match_iterator (iter, 0);
1960 if (m == MATCH_ERROR)
1964 gfc_check_do_variable (iter->var->symtree);
1968 m = match_io_element (k, &new);
1969 if (m == MATCH_ERROR)
1978 tail = gfc_append_code (tail, new);
1980 if (gfc_match_char (',') != MATCH_YES)
1989 if (gfc_match_char (')') != MATCH_YES)
1992 new = gfc_get_code ();
1994 new->ext.iterator = iter;
1996 new->block = gfc_get_code ();
1997 new->block->op = EXEC_DO;
1998 new->block->next = head;
2004 gfc_error ("Syntax error in I/O iterator at %C");
2008 gfc_free_iterator (iter, 1);
2009 gfc_free_statements (head);
2010 gfc_current_locus = old_loc;
2015 /* Match a single element of an IO list, which is either a single
2016 expression or an IO Iterator. */
2019 match_io_element (io_kind k, gfc_code ** cpp)
2027 m = match_io_iterator (k, cpp);
2033 m = gfc_match_variable (&expr, 0);
2035 gfc_error ("Expected variable in READ statement at %C");
2039 m = gfc_match_expr (&expr);
2041 gfc_error ("Expected expression in %s statement at %C",
2049 if (expr->symtree->n.sym->attr.intent == INTENT_IN)
2052 ("Variable '%s' in input list at %C cannot be INTENT(IN)",
2053 expr->symtree->n.sym->name);
2058 && gfc_impure_variable (expr->symtree->n.sym)
2059 && current_dt->io_unit->ts.type == BT_CHARACTER)
2061 gfc_error ("Cannot read to variable '%s' in PURE procedure at %C",
2062 expr->symtree->n.sym->name);
2066 if (gfc_check_do_variable (expr->symtree))
2072 if (current_dt->io_unit->ts.type == BT_CHARACTER
2074 && current_dt->io_unit->expr_type == EXPR_VARIABLE
2075 && gfc_impure_variable (current_dt->io_unit->symtree->n.sym))
2078 ("Cannot write to internal file unit '%s' at %C inside a "
2079 "PURE procedure", current_dt->io_unit->symtree->n.sym->name);
2091 gfc_free_expr (expr);
2095 cp = gfc_get_code ();
2096 cp->op = EXEC_TRANSFER;
2104 /* Match an I/O list, building gfc_code structures as we go. */
2107 match_io_list (io_kind k, gfc_code ** head_p)
2109 gfc_code *head, *tail, *new;
2112 *head_p = head = tail = NULL;
2113 if (gfc_match_eos () == MATCH_YES)
2118 m = match_io_element (k, &new);
2119 if (m == MATCH_ERROR)
2124 tail = gfc_append_code (tail, new);
2128 if (gfc_match_eos () == MATCH_YES)
2130 if (gfc_match_char (',') != MATCH_YES)
2138 gfc_error ("Syntax error in %s statement at %C", io_kind_name (k));
2141 gfc_free_statements (head);
2146 /* Attach the data transfer end node. */
2149 terminate_io (gfc_code * io_code)
2153 if (io_code == NULL)
2154 io_code = new_st.block;
2156 c = gfc_get_code ();
2157 c->op = EXEC_DT_END;
2159 /* Point to structure that is already there */
2160 c->ext.dt = new_st.ext.dt;
2161 gfc_append_code (io_code, c);
2165 /* Check the constraints for a data transfer statement. The majority of the
2166 constraints appearing in 9.4 of the standard appear here. Some are handled
2167 in resolve_tag and others in gfc_resolve_dt. */
2170 check_io_constraints (io_kind k, gfc_dt *dt, gfc_code * io_code, locus * spec_end)
2172 #define io_constraint(condition,msg,arg)\
2175 gfc_error(msg,arg);\
2181 gfc_symbol * sym = NULL;
2186 if (expr && expr->expr_type == EXPR_VARIABLE
2187 && expr->ts.type == BT_CHARACTER)
2189 sym = expr->symtree->n.sym;
2191 io_constraint (k == M_WRITE && sym->attr.intent == INTENT_IN,
2192 "Internal file at %L must not be INTENT(IN)",
2195 io_constraint (gfc_has_vector_index (dt->io_unit),
2196 "Internal file incompatible with vector subscript at %L",
2199 io_constraint (dt->rec != NULL,
2200 "REC tag at %L is incompatible with internal file",
2203 io_constraint (dt->namelist != NULL,
2204 "Internal file at %L is incompatible with namelist",
2207 io_constraint (dt->advance != NULL,
2208 "ADVANCE tag at %L is incompatible with internal file",
2209 &dt->advance->where);
2212 if (expr && expr->ts.type != BT_CHARACTER)
2215 io_constraint (gfc_pure (NULL)
2216 && (k == M_READ || k == M_WRITE),
2217 "IO UNIT in %s statement at %C must be "
2218 "an internal file in a PURE procedure",
2225 io_constraint (dt->end,
2226 "END tag not allowed with output at %L",
2229 io_constraint (dt->eor,
2230 "EOR tag not allowed with output at %L",
2233 io_constraint (k != M_READ && dt->size,
2234 "SIZE=specifier not allowed with output at %L",
2239 io_constraint (dt->size && dt->advance == NULL,
2240 "SIZE tag at %L requires an ADVANCE tag",
2243 io_constraint (dt->eor && dt->advance == NULL,
2244 "EOR tag at %L requires an ADVANCE tag",
2252 io_constraint (io_code && dt->namelist,
2253 "NAMELIST cannot be followed by IO-list at %L",
2256 io_constraint (dt->format_expr,
2257 "IO spec-list cannot contain both NAMELIST group name "
2258 "and format specification at %L.",
2259 &dt->format_expr->where);
2261 io_constraint (dt->format_label,
2262 "IO spec-list cannot contain both NAMELIST group name "
2263 "and format label at %L", spec_end);
2265 io_constraint (dt->rec,
2266 "NAMELIST IO is not allowed with a REC=specifier "
2267 "at %L.", &dt->rec->where);
2269 io_constraint (dt->advance,
2270 "NAMELIST IO is not allowed with a ADVANCE=specifier "
2271 "at %L.", &dt->advance->where);
2276 io_constraint (dt->end,
2277 "An END tag is not allowed with a "
2278 "REC=specifier at %L.", &dt->end_where);
2281 io_constraint (dt->format_label == &format_asterisk,
2282 "FMT=* is not allowed with a REC=specifier "
2283 "at %L.", spec_end);
2288 const char * advance;
2289 int not_yes, not_no;
2291 advance = expr->value.character.string;
2293 io_constraint (dt->format_label == &format_asterisk,
2294 "List directed format(*) is not allowed with a "
2295 "ADVANCE=specifier at %L.", &expr->where);
2297 not_no = strncasecmp (advance, "no", 2) != 0;
2298 not_yes = strncasecmp (advance, "yes", 2) != 0;
2300 io_constraint (expr->expr_type == EXPR_CONSTANT
2301 && not_no && not_yes,
2302 "ADVANCE=specifier at %L must have value = "
2303 "YES or NO.", &expr->where);
2305 io_constraint (dt->size && expr->expr_type == EXPR_CONSTANT
2306 && not_no && k == M_READ,
2307 "SIZE tag at %L requires an ADVANCE = 'NO'",
2310 io_constraint (dt->eor && expr->expr_type == EXPR_CONSTANT
2311 && not_no && k == M_READ,
2312 "EOR tag at %L requires an ADVANCE = 'NO'",
2316 expr = dt->format_expr;
2317 if (expr != NULL && expr->expr_type == EXPR_CONSTANT)
2318 check_format_string (expr);
2322 #undef io_constraint
2324 /* Match a READ, WRITE or PRINT statement. */
2327 match_io (io_kind k)
2329 char name[GFC_MAX_SYMBOL_LEN + 1];
2338 where = gfc_current_locus;
2340 current_dt = dt = gfc_getmem (sizeof (gfc_dt));
2341 if (gfc_match_char ('(') == MATCH_NO)
2343 where = gfc_current_locus;
2346 else if (k == M_PRINT)
2348 /* Treat the non-standard case of PRINT namelist. */
2349 if ((gfc_current_form == FORM_FIXED || gfc_peek_char () == ' ')
2350 && gfc_match_name (name) == MATCH_YES)
2352 gfc_find_symbol (name, NULL, 1, &sym);
2353 if (sym && sym->attr.flavor == FL_NAMELIST)
2355 if (gfc_notify_std (GFC_STD_GNU, "PRINT namelist at "
2356 "%C is an extension") == FAILURE)
2362 dt->io_unit = default_unit (k);
2367 gfc_current_locus = where;
2371 if (gfc_current_form == FORM_FREE)
2373 c = gfc_peek_char();
2374 if (c != ' ' && c != '*' && c != '\'' && c != '"')
2381 m = match_dt_format (dt);
2382 if (m == MATCH_ERROR)
2388 dt->io_unit = default_unit (k);
2392 /* Match a control list */
2393 if (match_dt_element (k, dt) == MATCH_YES)
2395 if (match_dt_unit (k, dt) != MATCH_YES)
2398 if (gfc_match_char (')') == MATCH_YES)
2400 if (gfc_match_char (',') != MATCH_YES)
2403 m = match_dt_element (k, dt);
2406 if (m == MATCH_ERROR)
2409 m = match_dt_format (dt);
2412 if (m == MATCH_ERROR)
2415 where = gfc_current_locus;
2417 m = gfc_match_name (name);
2420 gfc_find_symbol (name, NULL, 1, &sym);
2421 if (sym && sym->attr.flavor == FL_NAMELIST)
2424 if (k == M_READ && check_namelist (sym))
2433 gfc_current_locus = where;
2435 goto loop; /* No matches, try regular elements */
2438 if (gfc_match_char (')') == MATCH_YES)
2440 if (gfc_match_char (',') != MATCH_YES)
2446 m = match_dt_element (k, dt);
2449 if (m == MATCH_ERROR)
2452 if (gfc_match_char (')') == MATCH_YES)
2454 if (gfc_match_char (',') != MATCH_YES)
2460 /* Used in check_io_constraints, where no locus is available. */
2461 spec_end = gfc_current_locus;
2463 /* Optional leading comma (non-standard). */
2465 && gfc_match_char (',') == MATCH_YES
2467 && gfc_notify_std (GFC_STD_GNU, "Extension: Comma before output "
2468 "item list at %C is an extension") == FAILURE)
2472 if (gfc_match_eos () != MATCH_YES)
2474 if (comma_flag && gfc_match_char (',') != MATCH_YES)
2476 gfc_error ("Expected comma in I/O list at %C");
2481 m = match_io_list (k, &io_code);
2482 if (m == MATCH_ERROR)
2488 /* A full IO statement has been matched. Check the constraints. spec_end is
2489 supplied for cases where no locus is supplied. */
2490 m = check_io_constraints (k, dt, io_code, &spec_end);
2492 if (m == MATCH_ERROR)
2495 new_st.op = (k == M_READ) ? EXEC_READ : EXEC_WRITE;
2497 new_st.block = gfc_get_code ();
2498 new_st.block->op = new_st.op;
2499 new_st.block->next = io_code;
2501 terminate_io (io_code);
2506 gfc_error ("Syntax error in %s statement at %C", io_kind_name (k));
2516 gfc_match_read (void)
2518 return match_io (M_READ);
2522 gfc_match_write (void)
2524 return match_io (M_WRITE);
2528 gfc_match_print (void)
2532 m = match_io (M_PRINT);
2536 if (gfc_pure (NULL))
2538 gfc_error ("PRINT statement at %C not allowed within PURE procedure");
2546 /* Free a gfc_inquire structure. */
2549 gfc_free_inquire (gfc_inquire * inquire)
2552 if (inquire == NULL)
2555 gfc_free_expr (inquire->unit);
2556 gfc_free_expr (inquire->file);
2557 gfc_free_expr (inquire->iomsg);
2558 gfc_free_expr (inquire->iostat);
2559 gfc_free_expr (inquire->exist);
2560 gfc_free_expr (inquire->opened);
2561 gfc_free_expr (inquire->number);
2562 gfc_free_expr (inquire->named);
2563 gfc_free_expr (inquire->name);
2564 gfc_free_expr (inquire->access);
2565 gfc_free_expr (inquire->sequential);
2566 gfc_free_expr (inquire->direct);
2567 gfc_free_expr (inquire->form);
2568 gfc_free_expr (inquire->formatted);
2569 gfc_free_expr (inquire->unformatted);
2570 gfc_free_expr (inquire->recl);
2571 gfc_free_expr (inquire->nextrec);
2572 gfc_free_expr (inquire->blank);
2573 gfc_free_expr (inquire->position);
2574 gfc_free_expr (inquire->action);
2575 gfc_free_expr (inquire->read);
2576 gfc_free_expr (inquire->write);
2577 gfc_free_expr (inquire->readwrite);
2578 gfc_free_expr (inquire->delim);
2579 gfc_free_expr (inquire->pad);
2580 gfc_free_expr (inquire->iolength);
2581 gfc_free_expr (inquire->convert);
2587 /* Match an element of an INQUIRE statement. */
2589 #define RETM if (m != MATCH_NO) return m;
2592 match_inquire_element (gfc_inquire * inquire)
2596 m = match_etag (&tag_unit, &inquire->unit);
2597 RETM m = match_etag (&tag_file, &inquire->file);
2598 RETM m = match_ltag (&tag_err, &inquire->err);
2599 RETM m = match_out_tag (&tag_iomsg, &inquire->iomsg);
2600 RETM m = match_out_tag (&tag_iostat, &inquire->iostat);
2601 RETM m = match_vtag (&tag_exist, &inquire->exist);
2602 RETM m = match_vtag (&tag_opened, &inquire->opened);
2603 RETM m = match_vtag (&tag_named, &inquire->named);
2604 RETM m = match_vtag (&tag_name, &inquire->name);
2605 RETM m = match_out_tag (&tag_number, &inquire->number);
2606 RETM m = match_vtag (&tag_s_access, &inquire->access);
2607 RETM m = match_vtag (&tag_sequential, &inquire->sequential);
2608 RETM m = match_vtag (&tag_direct, &inquire->direct);
2609 RETM m = match_vtag (&tag_s_form, &inquire->form);
2610 RETM m = match_vtag (&tag_formatted, &inquire->formatted);
2611 RETM m = match_vtag (&tag_unformatted, &inquire->unformatted);
2612 RETM m = match_out_tag (&tag_s_recl, &inquire->recl);
2613 RETM m = match_out_tag (&tag_nextrec, &inquire->nextrec);
2614 RETM m = match_vtag (&tag_s_blank, &inquire->blank);
2615 RETM m = match_vtag (&tag_s_position, &inquire->position);
2616 RETM m = match_vtag (&tag_s_action, &inquire->action);
2617 RETM m = match_vtag (&tag_read, &inquire->read);
2618 RETM m = match_vtag (&tag_write, &inquire->write);
2619 RETM m = match_vtag (&tag_readwrite, &inquire->readwrite);
2620 RETM m = match_vtag (&tag_s_delim, &inquire->delim);
2621 RETM m = match_vtag (&tag_s_pad, &inquire->pad);
2622 RETM m = match_vtag (&tag_iolength, &inquire->iolength);
2623 RETM m = match_vtag (&tag_convert, &inquire->convert);
2624 RETM return MATCH_NO;
2631 gfc_match_inquire (void)
2633 gfc_inquire *inquire;
2638 m = gfc_match_char ('(');
2642 inquire = gfc_getmem (sizeof (gfc_inquire));
2644 loc = gfc_current_locus;
2646 m = match_inquire_element (inquire);
2647 if (m == MATCH_ERROR)
2651 m = gfc_match_expr (&inquire->unit);
2652 if (m == MATCH_ERROR)
2658 /* See if we have the IOLENGTH form of the inquire statement. */
2659 if (inquire->iolength != NULL)
2661 if (gfc_match_char (')') != MATCH_YES)
2664 m = match_io_list (M_INQUIRE, &code);
2665 if (m == MATCH_ERROR)
2670 new_st.op = EXEC_IOLENGTH;
2671 new_st.expr = inquire->iolength;
2672 new_st.ext.inquire = inquire;
2674 if (gfc_pure (NULL))
2676 gfc_free_statements (code);
2677 gfc_error ("INQUIRE statement not allowed in PURE procedure at %C");
2681 new_st.block = gfc_get_code ();
2682 new_st.block->op = EXEC_IOLENGTH;
2683 terminate_io (code);
2684 new_st.block->next = code;
2688 /* At this point, we have the non-IOLENGTH inquire statement. */
2691 if (gfc_match_char (')') == MATCH_YES)
2693 if (gfc_match_char (',') != MATCH_YES)
2696 m = match_inquire_element (inquire);
2697 if (m == MATCH_ERROR)
2702 if (inquire->iolength != NULL)
2704 gfc_error ("IOLENGTH tag invalid in INQUIRE statement at %C");
2709 if (gfc_match_eos () != MATCH_YES)
2712 if (inquire->unit != NULL && inquire->file != NULL)
2714 gfc_error ("INQUIRE statement at %L cannot contain both FILE and"
2715 " UNIT specifiers", &loc);
2719 if (inquire->unit == NULL && inquire->file == NULL)
2721 gfc_error ("INQUIRE statement at %L requires either FILE or"
2722 " UNIT specifier", &loc);
2726 if (gfc_pure (NULL))
2728 gfc_error ("INQUIRE statement not allowed in PURE procedure at %C");
2732 new_st.op = EXEC_INQUIRE;
2733 new_st.ext.inquire = inquire;
2737 gfc_syntax_error (ST_INQUIRE);
2740 gfc_free_inquire (inquire);
2745 /* Resolve everything in a gfc_inquire structure. */
2748 gfc_resolve_inquire (gfc_inquire * inquire)
2751 RESOLVE_TAG (&tag_unit, inquire->unit);
2752 RESOLVE_TAG (&tag_file, inquire->file);
2753 RESOLVE_TAG (&tag_iomsg, inquire->iomsg);
2754 RESOLVE_TAG (&tag_iostat, inquire->iostat);
2755 RESOLVE_TAG (&tag_exist, inquire->exist);
2756 RESOLVE_TAG (&tag_opened, inquire->opened);
2757 RESOLVE_TAG (&tag_number, inquire->number);
2758 RESOLVE_TAG (&tag_named, inquire->named);
2759 RESOLVE_TAG (&tag_name, inquire->name);
2760 RESOLVE_TAG (&tag_s_access, inquire->access);
2761 RESOLVE_TAG (&tag_sequential, inquire->sequential);
2762 RESOLVE_TAG (&tag_direct, inquire->direct);
2763 RESOLVE_TAG (&tag_s_form, inquire->form);
2764 RESOLVE_TAG (&tag_formatted, inquire->formatted);
2765 RESOLVE_TAG (&tag_unformatted, inquire->unformatted);
2766 RESOLVE_TAG (&tag_s_recl, inquire->recl);
2767 RESOLVE_TAG (&tag_nextrec, inquire->nextrec);
2768 RESOLVE_TAG (&tag_s_blank, inquire->blank);
2769 RESOLVE_TAG (&tag_s_position, inquire->position);
2770 RESOLVE_TAG (&tag_s_action, inquire->action);
2771 RESOLVE_TAG (&tag_read, inquire->read);
2772 RESOLVE_TAG (&tag_write, inquire->write);
2773 RESOLVE_TAG (&tag_readwrite, inquire->readwrite);
2774 RESOLVE_TAG (&tag_s_delim, inquire->delim);
2775 RESOLVE_TAG (&tag_s_pad, inquire->pad);
2776 RESOLVE_TAG (&tag_iolength, inquire->iolength);
2777 RESOLVE_TAG (&tag_convert, inquire->convert);
2779 if (gfc_reference_st_label (inquire->err, ST_LABEL_TARGET) == FAILURE)