1 /* YACC parser for C syntax and for Objective C. -*-c-*-
2 Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996,
3 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GCC.
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 2, or (at your option) any later
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
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* This file defines the grammar of C and that of Objective C.
23 ifobjc ... end ifobjc conditionals contain code for Objective C only.
24 ifc ... end ifc conditionals contain code for C only.
25 Sed commands in Makefile.in are used to convert this file into
26 c-parse.y and into objc-parse.y. */
28 /* To whomever it may concern: I have heard that such a thing was once
29 written by AT&T, but I have never seen it. */
32 %expect 31 /* shift/reduce conflicts, and 1 reduce/reduce conflict. */
35 %expect 10 /* shift/reduce conflicts, and no reduce/reduce conflicts. */
53 #include "diagnostic.h"
55 #ifdef MULTIBYTE_CHARS
63 /* Since parsers are distinct for each language, put the language string
66 const char * const language_string = "GNU Objective-C";
69 const char * const language_string = "GNU C";
72 /* Like YYERROR but do call yyerror. */
73 #define YYERROR1 { yyerror ("syntax error"); YYERROR; }
75 /* Cause the "yydebug" variable to be defined. */
78 /* Rename the "yyparse" function so that we can override it elsewhere. */
79 #define yyparse yyparse_1
84 %union {long itype; tree ttype; enum tree_code code;
85 const char *filename; int lineno; }
87 /* All identifiers that are not reserved words
88 and are not declared typedefs in the current block */
91 /* All identifiers that are declared typedefs in the current block.
92 In some contexts, they are treated just like IDENTIFIER,
93 but they can also serve as typespecs in declarations. */
96 /* Reserved words that specify storage class.
97 yylval contains an IDENTIFIER_NODE which indicates which one. */
100 /* Reserved words that specify type.
101 yylval contains an IDENTIFIER_NODE which indicates which one. */
104 /* Reserved words that qualify type: "const", "volatile", or "restrict".
105 yylval contains an IDENTIFIER_NODE which indicates which one. */
108 /* Character or numeric constants.
109 yylval is the node for the constant. */
112 /* String constants in raw form.
113 yylval is a STRING_CST node. */
116 /* "...", used for functions with variable arglists. */
119 /* the reserved words */
120 /* SCO include files test "ASM", so use something else. */
121 %token SIZEOF ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
122 %token BREAK CONTINUE RETURN GOTO ASM_KEYWORD TYPEOF ALIGNOF
123 %token ATTRIBUTE EXTENSION LABEL
124 %token REALPART IMAGPART VA_ARG
125 %token PTR_VALUE PTR_BASE PTR_EXTENT
127 /* function name can be a string const or a var decl. */
128 %token STRING_FUNC_NAME VAR_FUNC_NAME
130 /* Add precedence rules to solve dangling else s/r conflict */
134 /* Define the operator tokens and their precedences.
135 The value is an integer because, if used, it is the tree code
136 to use in the expression made from the operator. */
138 %right <code> ASSIGN '='
139 %right <code> '?' ':'
145 %left <code> EQCOMPARE
146 %left <code> ARITHCOMPARE
147 %left <code> LSHIFT RSHIFT
149 %left <code> '*' '/' '%'
150 %right <code> UNARY PLUSPLUS MINUSMINUS
152 %left <code> POINTSAT '.' '(' '['
154 /* The Objective-C keywords. These are included in C and in
155 Objective C, so that the token codes are the same in both. */
156 %token INTERFACE IMPLEMENTATION END SELECTOR DEFS ENCODE
157 %token CLASSNAME PUBLIC PRIVATE PROTECTED PROTOCOL OBJECTNAME CLASS ALIAS
160 %type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
161 %type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
163 %type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
164 %type <ttype> expr_no_commas cast_expr unary_expr primary string STRING
165 %type <ttype> declspecs_nosc_nots_nosa_noea declspecs_nosc_nots_nosa_ea
166 %type <ttype> declspecs_nosc_nots_sa_noea declspecs_nosc_nots_sa_ea
167 %type <ttype> declspecs_nosc_ts_nosa_noea declspecs_nosc_ts_nosa_ea
168 %type <ttype> declspecs_nosc_ts_sa_noea declspecs_nosc_ts_sa_ea
169 %type <ttype> declspecs_sc_nots_nosa_noea declspecs_sc_nots_nosa_ea
170 %type <ttype> declspecs_sc_nots_sa_noea declspecs_sc_nots_sa_ea
171 %type <ttype> declspecs_sc_ts_nosa_noea declspecs_sc_ts_nosa_ea
172 %type <ttype> declspecs_sc_ts_sa_noea declspecs_sc_ts_sa_ea
173 %type <ttype> declspecs_ts declspecs_nots
174 %type <ttype> declspecs_ts_nosa declspecs_nots_nosa
175 %type <ttype> declspecs_nosc_ts declspecs_nosc_nots declspecs_nosc declspecs
176 %type <ttype> maybe_type_quals_attrs typespec_nonattr typespec_attr
177 %type <ttype> typespec_reserved_nonattr typespec_reserved_attr
178 %type <ttype> typespec_nonreserved_nonattr
180 %type <ttype> SCSPEC TYPESPEC TYPE_QUAL maybe_type_qual
181 %type <ttype> initdecls notype_initdecls initdcl notype_initdcl
182 %type <ttype> init maybeasm
183 %type <ttype> asm_operands nonnull_asm_operands asm_operand asm_clobbers
184 %type <ttype> maybe_attribute attributes attribute attribute_list attrib
185 %type <ttype> any_word extension
187 %type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
188 %type <ttype> do_stmt_start poplevel stmt label
190 %type <ttype> c99_block_start c99_block_end
191 %type <ttype> declarator
192 %type <ttype> notype_declarator after_type_declarator
193 %type <ttype> parm_declarator
194 %type <ttype> parm_declarator_starttypename parm_declarator_nostarttypename
195 %type <ttype> array_declarator
197 %type <ttype> structsp_attr structsp_nonattr
198 %type <ttype> component_decl_list component_decl_list2
199 %type <ttype> component_decl components components_notype component_declarator
200 %type <ttype> component_notype_declarator
201 %type <ttype> enumlist enumerator
202 %type <ttype> struct_head union_head enum_head
203 %type <ttype> typename absdcl absdcl1 absdcl1_ea absdcl1_noea
204 %type <ttype> direct_absdcl1 absdcl_maybe_attribute
205 %type <ttype> xexpr parms parm firstparm identifiers
207 %type <ttype> parmlist parmlist_1 parmlist_2
208 %type <ttype> parmlist_or_identifiers parmlist_or_identifiers_1
209 %type <ttype> identifiers_or_typenames
211 %type <itype> setspecs setspecs_fp
213 %type <filename> save_filename
214 %type <lineno> save_lineno
217 /* the Objective-C nonterminals */
219 %type <ttype> ivar_decl_list ivar_decls ivar_decl ivars ivar_declarator
220 %type <ttype> methoddecl unaryselector keywordselector selector
221 %type <ttype> keyworddecl receiver objcmessageexpr messageargs
222 %type <ttype> keywordexpr keywordarglist keywordarg
223 %type <ttype> myparms myparm optparmlist reservedwords objcselectorexpr
224 %type <ttype> selectorarg keywordnamelist keywordname objcencodeexpr
225 %type <ttype> objc_string non_empty_protocolrefs protocolrefs identifier_list objcprotocolexpr
227 %type <ttype> CLASSNAME OBJECTNAME
231 /* Number of statements (loosely speaking) and compound statements
233 static int stmt_count;
234 static int compstmt_count;
236 /* Input file and line number of the end of the body of last simple_if;
237 used by the stmt-rule immediately after simple_if returns. */
238 static const char *if_stmt_file;
239 static int if_stmt_line;
241 /* List of types and structure classes of the current declaration. */
242 static tree current_declspecs = NULL_TREE;
243 static tree prefix_attributes = NULL_TREE;
245 /* List of all the attributes applying to the identifier currently being
246 declared; includes prefix_attributes and possibly some more attributes
247 just after a comma. */
248 static tree all_prefix_attributes = NULL_TREE;
250 /* Stack of saved values of current_declspecs, prefix_attributes and
251 all_prefix_attributes. */
252 static tree declspec_stack;
254 /* PUSH_DECLSPEC_STACK is called from setspecs; POP_DECLSPEC_STACK
255 should be called from the productions making use of setspecs. */
256 #define PUSH_DECLSPEC_STACK \
258 declspec_stack = tree_cons (build_tree_list (prefix_attributes, \
259 all_prefix_attributes), \
264 #define POP_DECLSPEC_STACK \
266 current_declspecs = TREE_VALUE (declspec_stack); \
267 prefix_attributes = TREE_PURPOSE (TREE_PURPOSE (declspec_stack)); \
268 all_prefix_attributes = TREE_VALUE (TREE_PURPOSE (declspec_stack)); \
269 declspec_stack = TREE_CHAIN (declspec_stack); \
272 /* For __extension__, save/restore the warning flags which are
273 controlled by __extension__. */
274 #define SAVE_WARN_FLAGS() \
275 size_int (pedantic | (warn_pointer_arith << 1))
276 #define RESTORE_WARN_FLAGS(tval) \
278 int val = tree_low_cst (tval, 0); \
279 pedantic = val & 1; \
280 warn_pointer_arith = (val >> 1) & 1; \
284 /* Objective-C specific parser/lexer information */
286 static enum tree_code objc_inherit_code;
287 static int objc_pq_context = 0, objc_public_flag = 0;
289 /* The following flag is needed to contextualize ObjC lexical analysis.
290 In some cases (e.g., 'int NSObject;'), it is undesirable to bind
291 an identifier to an ObjC class, even if a class with that name
293 static int objc_need_raw_identifier;
294 #define OBJC_NEED_RAW_IDENTIFIER(VAL) objc_need_raw_identifier = VAL
298 #define OBJC_NEED_RAW_IDENTIFIER(VAL) /* nothing */
301 /* Tell yyparse how to print a token's value, if yydebug is set. */
303 #define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
305 static void yyprint PARAMS ((FILE *, int, YYSTYPE));
306 static void yyerror PARAMS ((const char *));
307 static int yylexname PARAMS ((void));
308 static inline int _yylex PARAMS ((void));
309 static int yylex PARAMS ((void));
310 static void init_reswords PARAMS ((void));
312 /* Add GC roots for variables local to this file. */
316 ggc_add_tree_root (&declspec_stack, 1);
317 ggc_add_tree_root (¤t_declspecs, 1);
318 ggc_add_tree_root (&prefix_attributes, 1);
319 ggc_add_tree_root (&all_prefix_attributes, 1);
327 pedwarn ("ISO C forbids an empty source file");
332 /* In case there were missing closebraces,
333 get us back to the global binding level. */
334 while (! global_bindings_p ())
337 finish_fname_decls ();
343 /* the reason for the strange actions in this rule
344 is so that notype_initdecls when reached via datadef
345 can find a valid list of type and sc specs in $0. */
348 {$<ttype>$ = NULL_TREE; } extdef
349 | extdefs {$<ttype>$ = NULL_TREE; ggc_collect(); } extdef
358 | ASM_KEYWORD '(' expr ')' ';'
360 if ((TREE_CODE ($3) == ADDR_EXPR
361 && TREE_CODE (TREE_OPERAND ($3, 0)) == STRING_CST)
362 || TREE_CODE ($3) == STRING_CST)
365 error ("argument of `asm' is not a constant string"); }
367 { RESTORE_WARN_FLAGS ($1); }
371 setspecs notype_initdecls ';'
373 error ("ISO C forbids data definition with no type or storage class");
374 else if (!flag_traditional)
375 warning ("data definition has no type or storage class");
377 POP_DECLSPEC_STACK; }
378 | declspecs_nots setspecs notype_initdecls ';'
379 { POP_DECLSPEC_STACK; }
380 | declspecs_ts setspecs initdecls ';'
381 { POP_DECLSPEC_STACK; }
388 pedwarn ("ISO C does not allow extra `;' outside of a function"); }
392 declspecs_ts setspecs declarator
393 { if (! start_function (current_declspecs, $3,
394 all_prefix_attributes))
398 { store_parm_decls (); }
399 save_filename save_lineno compstmt_or_error
400 { DECL_SOURCE_FILE (current_function_decl) = $7;
401 DECL_SOURCE_LINE (current_function_decl) = $8;
403 POP_DECLSPEC_STACK; }
404 | declspecs_ts setspecs declarator error
405 { POP_DECLSPEC_STACK; }
406 | declspecs_nots setspecs notype_declarator
407 { if (! start_function (current_declspecs, $3,
408 all_prefix_attributes))
412 { store_parm_decls (); }
413 save_filename save_lineno compstmt_or_error
414 { DECL_SOURCE_FILE (current_function_decl) = $7;
415 DECL_SOURCE_LINE (current_function_decl) = $8;
417 POP_DECLSPEC_STACK; }
418 | declspecs_nots setspecs notype_declarator error
419 { POP_DECLSPEC_STACK; }
420 | setspecs notype_declarator
421 { if (! start_function (NULL_TREE, $2,
422 all_prefix_attributes))
426 { store_parm_decls (); }
427 save_filename save_lineno compstmt_or_error
428 { DECL_SOURCE_FILE (current_function_decl) = $6;
429 DECL_SOURCE_LINE (current_function_decl) = $7;
431 POP_DECLSPEC_STACK; }
432 | setspecs notype_declarator error
433 { POP_DECLSPEC_STACK; }
448 { $$ = NEGATE_EXPR; }
452 if (warn_traditional && !in_system_header)
453 warning ("traditional C rejects the unary plus operator");
457 { $$ = PREINCREMENT_EXPR; }
459 { $$ = PREDECREMENT_EXPR; }
461 { $$ = BIT_NOT_EXPR; }
463 { $$ = TRUTH_NOT_EXPR; }
466 expr: nonnull_exprlist
467 { $$ = build_compound_expr ($1); }
478 { $$ = build_tree_list (NULL_TREE, $1); }
479 | nonnull_exprlist ',' expr_no_commas
480 { chainon ($1, build_tree_list (NULL_TREE, $3)); }
485 | '*' cast_expr %prec UNARY
486 { $$ = build_indirect_ref ($2, "unary *"); }
487 /* __extension__ turns off -pedantic for following primary. */
488 | extension cast_expr %prec UNARY
490 RESTORE_WARN_FLAGS ($1); }
491 | unop cast_expr %prec UNARY
492 { $$ = build_unary_op ($1, $2, 0);
493 overflow_warning ($$); }
494 /* Refer to the address of a label as a pointer. */
496 { $$ = finish_label_address_expr ($2); }
497 /* This seems to be impossible on some machines, so let's turn it off.
498 You can use __builtin_next_arg to find the anonymous stack args.
500 { tree types = TYPE_ARG_TYPES (TREE_TYPE (current_function_decl));
501 $$ = error_mark_node;
502 if (TREE_VALUE (tree_last (types)) == void_type_node)
503 error ("`&...' used in function with fixed number of arguments");
507 pedwarn ("ISO C forbids `&...'");
508 $$ = tree_last (DECL_ARGUMENTS (current_function_decl));
509 $$ = build_unary_op (ADDR_EXPR, $$, 0);
512 | sizeof unary_expr %prec UNARY
514 if (TREE_CODE ($2) == COMPONENT_REF
515 && DECL_C_BIT_FIELD (TREE_OPERAND ($2, 1)))
516 error ("`sizeof' applied to a bit-field");
517 $$ = c_sizeof (TREE_TYPE ($2)); }
518 | sizeof '(' typename ')' %prec HYPERUNARY
520 $$ = c_sizeof (groktypename ($3)); }
521 | alignof unary_expr %prec UNARY
523 $$ = c_alignof_expr ($2); }
524 | alignof '(' typename ')' %prec HYPERUNARY
526 $$ = c_alignof (groktypename ($3)); }
527 | REALPART cast_expr %prec UNARY
528 { $$ = build_unary_op (REALPART_EXPR, $2, 0); }
529 | IMAGPART cast_expr %prec UNARY
530 { $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
534 SIZEOF { skip_evaluation++; }
538 ALIGNOF { skip_evaluation++; }
543 | '(' typename ')' cast_expr %prec UNARY
544 { $$ = c_cast_expr ($2, $4); }
549 | expr_no_commas '+' expr_no_commas
550 { $$ = parser_build_binary_op ($2, $1, $3); }
551 | expr_no_commas '-' expr_no_commas
552 { $$ = parser_build_binary_op ($2, $1, $3); }
553 | expr_no_commas '*' expr_no_commas
554 { $$ = parser_build_binary_op ($2, $1, $3); }
555 | expr_no_commas '/' expr_no_commas
556 { $$ = parser_build_binary_op ($2, $1, $3); }
557 | expr_no_commas '%' expr_no_commas
558 { $$ = parser_build_binary_op ($2, $1, $3); }
559 | expr_no_commas LSHIFT expr_no_commas
560 { $$ = parser_build_binary_op ($2, $1, $3); }
561 | expr_no_commas RSHIFT expr_no_commas
562 { $$ = parser_build_binary_op ($2, $1, $3); }
563 | expr_no_commas ARITHCOMPARE expr_no_commas
564 { $$ = parser_build_binary_op ($2, $1, $3); }
565 | expr_no_commas EQCOMPARE expr_no_commas
566 { $$ = parser_build_binary_op ($2, $1, $3); }
567 | expr_no_commas '&' expr_no_commas
568 { $$ = parser_build_binary_op ($2, $1, $3); }
569 | expr_no_commas '|' expr_no_commas
570 { $$ = parser_build_binary_op ($2, $1, $3); }
571 | expr_no_commas '^' expr_no_commas
572 { $$ = parser_build_binary_op ($2, $1, $3); }
573 | expr_no_commas ANDAND
574 { $1 = truthvalue_conversion (default_conversion ($1));
575 skip_evaluation += $1 == boolean_false_node; }
577 { skip_evaluation -= $1 == boolean_false_node;
578 $$ = parser_build_binary_op (TRUTH_ANDIF_EXPR, $1, $4); }
579 | expr_no_commas OROR
580 { $1 = truthvalue_conversion (default_conversion ($1));
581 skip_evaluation += $1 == boolean_true_node; }
583 { skip_evaluation -= $1 == boolean_true_node;
584 $$ = parser_build_binary_op (TRUTH_ORIF_EXPR, $1, $4); }
586 { $1 = truthvalue_conversion (default_conversion ($1));
587 skip_evaluation += $1 == boolean_false_node; }
589 { skip_evaluation += (($1 == boolean_true_node)
590 - ($1 == boolean_false_node)); }
592 { skip_evaluation -= $1 == boolean_true_node;
593 $$ = build_conditional_expr ($1, $4, $7); }
596 pedwarn ("ISO C forbids omitting the middle term of a ?: expression");
597 /* Make sure first operand is calculated only once. */
598 $<ttype>2 = save_expr ($1);
599 $1 = truthvalue_conversion (default_conversion ($<ttype>2));
600 skip_evaluation += $1 == boolean_true_node; }
602 { skip_evaluation -= $1 == boolean_true_node;
603 $$ = build_conditional_expr ($1, $<ttype>2, $5); }
604 | expr_no_commas '=' expr_no_commas
606 $$ = build_modify_expr ($1, NOP_EXPR, $3);
607 class = TREE_CODE_CLASS (TREE_CODE ($$));
608 if (IS_EXPR_CODE_CLASS (class))
609 C_SET_EXP_ORIGINAL_CODE ($$, MODIFY_EXPR);
611 | expr_no_commas ASSIGN expr_no_commas
613 $$ = build_modify_expr ($1, $2, $3);
614 /* This inhibits warnings in truthvalue_conversion. */
615 class = TREE_CODE_CLASS (TREE_CODE ($$));
616 if (IS_EXPR_CODE_CLASS (class))
617 C_SET_EXP_ORIGINAL_CODE ($$, ERROR_MARK);
624 if (yychar == YYEMPTY)
626 $$ = build_external_ref ($1, yychar == '(');
630 { $$ = combine_strings ($1); }
632 { $$ = fname_decl (C_RID_CODE ($$), $$); }
633 | '(' typename ')' '{'
634 { start_init (NULL_TREE, NULL, 0);
635 $2 = groktypename ($2);
636 really_start_incremental_init ($2); }
637 initlist_maybe_comma '}' %prec UNARY
639 tree result = pop_init_level (0);
643 if (pedantic && ! flag_isoc99)
644 pedwarn ("ISO C89 forbids compound literals");
645 if (TYPE_NAME (type) != 0)
647 if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE)
648 name = IDENTIFIER_POINTER (TYPE_NAME (type));
650 name = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)));
655 if (TREE_CODE (type) == ARRAY_TYPE && !COMPLETE_TYPE_P (type))
657 int failure = complete_array_type (type, $$, 1);
663 { char class = TREE_CODE_CLASS (TREE_CODE ($2));
664 if (IS_EXPR_CODE_CLASS (class))
665 C_SET_EXP_ORIGINAL_CODE ($2, ERROR_MARK);
668 { $$ = error_mark_node; }
669 | compstmt_primary_start compstmt_nostart ')'
670 { tree saved_last_tree;
673 pedwarn ("ISO C forbids braced-groups within expressions");
676 saved_last_tree = COMPOUND_BODY ($1);
677 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
678 last_tree = saved_last_tree;
679 TREE_CHAIN (last_tree) = NULL_TREE;
681 last_expr_type = void_type_node;
682 $$ = build1 (STMT_EXPR, last_expr_type, $1);
683 TREE_SIDE_EFFECTS ($$) = 1;
685 | compstmt_primary_start error ')'
688 last_tree = COMPOUND_BODY ($1);
689 TREE_CHAIN (last_tree) = NULL_TREE;
690 $$ = error_mark_node;
692 | primary '(' exprlist ')' %prec '.'
693 { $$ = build_function_call ($1, $3); }
694 | VA_ARG '(' expr_no_commas ',' typename ')'
695 { $$ = build_va_arg ($3, groktypename ($5)); }
696 | primary '[' expr ']' %prec '.'
697 { $$ = build_array_ref ($1, $3); }
698 | primary '.' identifier
701 if (!is_public ($1, $3))
702 $$ = error_mark_node;
705 $$ = build_component_ref ($1, $3);
707 | primary POINTSAT identifier
709 tree expr = build_indirect_ref ($1, "->");
712 if (!is_public (expr, $3))
713 $$ = error_mark_node;
716 $$ = build_component_ref (expr, $3);
719 { $$ = build_unary_op (POSTINCREMENT_EXPR, $1, 0); }
721 { $$ = build_unary_op (POSTDECREMENT_EXPR, $1, 0); }
724 { $$ = build_message_expr ($1); }
726 { $$ = build_selector_expr ($1); }
728 { $$ = build_protocol_expr ($1); }
730 { $$ = build_encode_expr ($1); }
732 { $$ = build_objc_string_object ($1); }
736 /* Produces a STRING_CST with perhaps more STRING_CSTs chained onto it. */
742 static int last_lineno = 0;
743 static const char *last_input_filename = 0;
745 $$ = chainon ($1, $2);
747 if (warn_traditional && !in_system_header
748 && (lineno != last_lineno || !last_input_filename ||
749 strcmp (last_input_filename, input_filename)))
751 warning ("traditional C rejects string concatenation");
752 last_lineno = lineno;
753 last_input_filename = input_filename;
760 /* Produces an STRING_CST with perhaps more STRING_CSTs chained
761 onto it, which is to be read as an ObjC string object. */
765 | objc_string '@' STRING
766 { $$ = chainon ($1, $3); }
770 old_style_parm_decls:
774 /* ... is used here to indicate a varargs function. */
777 pedwarn ("ISO C does not permit use of `varargs.h'"); }
780 /* The following are analogous to lineno_decl, decls and decl
781 except that they do not allow nested functions.
782 They are used for old-style parm decls. */
784 save_filename save_lineno datadecl
791 | datadecls lineno_datadecl
792 | lineno_datadecl errstmt
795 /* We don't allow prefix attributes here because they cause reduce/reduce
796 conflicts: we can't know whether we're parsing a function decl with
797 attribute suffix, or function defn with attribute prefix on first old
800 declspecs_ts_nosa setspecs initdecls ';'
801 { POP_DECLSPEC_STACK; }
802 | declspecs_nots_nosa setspecs notype_initdecls ';'
803 { POP_DECLSPEC_STACK; }
804 | declspecs_ts_nosa ';'
805 { shadow_tag_warned ($1, 1);
806 pedwarn ("empty declaration"); }
807 | declspecs_nots_nosa ';'
808 { pedwarn ("empty declaration"); }
811 /* This combination which saves a lineno before a decl
812 is the normal thing to use, rather than decl itself.
813 This is to avoid shift/reduce conflicts in contexts
814 where statement labels are allowed. */
816 save_filename save_lineno decl
820 /* records the type and storage class specs to use for processing
821 the declarators that follow.
822 Maintains a stack of outer-level values of current_declspecs,
823 for the sake of parm declarations nested in function declarators. */
824 setspecs: /* empty */
825 { pending_xref_error ();
827 split_specs_attrs ($<ttype>0,
828 ¤t_declspecs, &prefix_attributes);
829 all_prefix_attributes = prefix_attributes; }
832 /* Possibly attributes after a comma, which should reset all_prefix_attributes
833 to prefix_attributes with these ones chained on the front. */
836 { all_prefix_attributes = chainon ($1, prefix_attributes); }
840 declspecs_ts setspecs initdecls ';'
841 { POP_DECLSPEC_STACK; }
842 | declspecs_nots setspecs notype_initdecls ';'
843 { POP_DECLSPEC_STACK; }
844 | declspecs_ts setspecs nested_function
845 { POP_DECLSPEC_STACK; }
846 | declspecs_nots setspecs notype_nested_function
847 { POP_DECLSPEC_STACK; }
851 { RESTORE_WARN_FLAGS ($1); }
854 /* A list of declaration specifiers. These are:
856 - Storage class specifiers (SCSPEC), which for GCC currently include
857 function specifiers ("inline").
859 - Type specifiers (typespec_*).
861 - Type qualifiers (TYPE_QUAL).
863 - Attribute specifier lists (attributes).
865 These are stored as a TREE_LIST; the head of the list is the last
866 item in the specifier list. Each entry in the list has either a
867 TREE_PURPOSE that is an attribute specifier list, or a TREE_VALUE that
868 is a single other specifier or qualifier; and a TREE_CHAIN that is the
869 rest of the list. TREE_STATIC is set on the list if something other
870 than a storage class specifier or attribute has been seen; this is used
871 to warn for the obsolescent usage of storage class specifiers other than
872 at the start of the list. (Doing this properly would require function
873 specifiers to be handled separately from storage class specifiers.)
875 The various cases below are classified according to:
877 (a) Whether a storage class specifier is included or not; some
878 places in the grammar disallow storage class specifiers (_sc or _nosc).
880 (b) Whether a type specifier has been seen; after a type specifier,
881 a typedef name is an identifier to redeclare (_ts or _nots).
883 (c) Whether the list starts with an attribute; in certain places,
884 the grammar requires specifiers that don't start with an attribute
887 (d) Whether the list ends with an attribute (or a specifier such that
888 any following attribute would have been parsed as part of that specifier);
889 this avoids shift-reduce conflicts in the parsing of attributes
894 (i) Distinguish between function specifiers and storage class specifiers,
895 at least for the purpose of warnings about obsolescent usage.
897 (ii) Halve the number of productions here by eliminating the _sc/_nosc
898 distinction and instead checking where required that storage class
899 specifiers aren't present. */
901 /* Declspecs which contain at least one type specifier or typedef name.
902 (Just `const' or `volatile' is not enough.)
903 A typedef'd name following these is taken as a name to be declared.
904 Declspecs have a non-NULL TREE_VALUE, attributes do not. */
906 declspecs_nosc_nots_nosa_noea:
908 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
909 TREE_STATIC ($$) = 1; }
910 | declspecs_nosc_nots_nosa_noea TYPE_QUAL
911 { $$ = tree_cons (NULL_TREE, $2, $1);
912 TREE_STATIC ($$) = 1; }
913 | declspecs_nosc_nots_nosa_ea TYPE_QUAL
914 { $$ = tree_cons (NULL_TREE, $2, $1);
915 TREE_STATIC ($$) = 1; }
918 declspecs_nosc_nots_nosa_ea:
919 declspecs_nosc_nots_nosa_noea attributes
920 { $$ = tree_cons ($2, NULL_TREE, $1);
921 TREE_STATIC ($$) = TREE_STATIC ($1); }
924 declspecs_nosc_nots_sa_noea:
925 declspecs_nosc_nots_sa_noea TYPE_QUAL
926 { $$ = tree_cons (NULL_TREE, $2, $1);
927 TREE_STATIC ($$) = 1; }
928 | declspecs_nosc_nots_sa_ea TYPE_QUAL
929 { $$ = tree_cons (NULL_TREE, $2, $1);
930 TREE_STATIC ($$) = 1; }
933 declspecs_nosc_nots_sa_ea:
935 { $$ = tree_cons ($1, NULL_TREE, NULL_TREE);
936 TREE_STATIC ($$) = 0; }
937 | declspecs_nosc_nots_sa_noea attributes
938 { $$ = tree_cons ($2, NULL_TREE, $1);
939 TREE_STATIC ($$) = TREE_STATIC ($1); }
942 declspecs_nosc_ts_nosa_noea:
944 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
945 TREE_STATIC ($$) = 1; }
946 | declspecs_nosc_ts_nosa_noea TYPE_QUAL
947 { $$ = tree_cons (NULL_TREE, $2, $1);
948 TREE_STATIC ($$) = 1; }
949 | declspecs_nosc_ts_nosa_ea TYPE_QUAL
950 { $$ = tree_cons (NULL_TREE, $2, $1);
951 TREE_STATIC ($$) = 1; }
952 | declspecs_nosc_ts_nosa_noea typespec_reserved_nonattr
953 { $$ = tree_cons (NULL_TREE, $2, $1);
954 TREE_STATIC ($$) = 1; }
955 | declspecs_nosc_ts_nosa_ea typespec_reserved_nonattr
956 { $$ = tree_cons (NULL_TREE, $2, $1);
957 TREE_STATIC ($$) = 1; }
958 | declspecs_nosc_nots_nosa_noea typespec_nonattr
959 { $$ = tree_cons (NULL_TREE, $2, $1);
960 TREE_STATIC ($$) = 1; }
961 | declspecs_nosc_nots_nosa_ea typespec_nonattr
962 { $$ = tree_cons (NULL_TREE, $2, $1);
963 TREE_STATIC ($$) = 1; }
966 declspecs_nosc_ts_nosa_ea:
968 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
969 TREE_STATIC ($$) = 1; }
970 | declspecs_nosc_ts_nosa_noea attributes
971 { $$ = tree_cons ($2, NULL_TREE, $1);
972 TREE_STATIC ($$) = TREE_STATIC ($1); }
973 | declspecs_nosc_ts_nosa_noea typespec_reserved_attr
974 { $$ = tree_cons (NULL_TREE, $2, $1);
975 TREE_STATIC ($$) = 1; }
976 | declspecs_nosc_ts_nosa_ea typespec_reserved_attr
977 { $$ = tree_cons (NULL_TREE, $2, $1);
978 TREE_STATIC ($$) = 1; }
979 | declspecs_nosc_nots_nosa_noea typespec_attr
980 { $$ = tree_cons (NULL_TREE, $2, $1);
981 TREE_STATIC ($$) = 1; }
982 | declspecs_nosc_nots_nosa_ea typespec_attr
983 { $$ = tree_cons (NULL_TREE, $2, $1);
984 TREE_STATIC ($$) = 1; }
987 declspecs_nosc_ts_sa_noea:
988 declspecs_nosc_ts_sa_noea TYPE_QUAL
989 { $$ = tree_cons (NULL_TREE, $2, $1);
990 TREE_STATIC ($$) = 1; }
991 | declspecs_nosc_ts_sa_ea TYPE_QUAL
992 { $$ = tree_cons (NULL_TREE, $2, $1);
993 TREE_STATIC ($$) = 1; }
994 | declspecs_nosc_ts_sa_noea typespec_reserved_nonattr
995 { $$ = tree_cons (NULL_TREE, $2, $1);
996 TREE_STATIC ($$) = 1; }
997 | declspecs_nosc_ts_sa_ea typespec_reserved_nonattr
998 { $$ = tree_cons (NULL_TREE, $2, $1);
999 TREE_STATIC ($$) = 1; }
1000 | declspecs_nosc_nots_sa_noea typespec_nonattr
1001 { $$ = tree_cons (NULL_TREE, $2, $1);
1002 TREE_STATIC ($$) = 1; }
1003 | declspecs_nosc_nots_sa_ea typespec_nonattr
1004 { $$ = tree_cons (NULL_TREE, $2, $1);
1005 TREE_STATIC ($$) = 1; }
1008 declspecs_nosc_ts_sa_ea:
1009 declspecs_nosc_ts_sa_noea attributes
1010 { $$ = tree_cons ($2, NULL_TREE, $1);
1011 TREE_STATIC ($$) = TREE_STATIC ($1); }
1012 | declspecs_nosc_ts_sa_noea typespec_reserved_attr
1013 { $$ = tree_cons (NULL_TREE, $2, $1);
1014 TREE_STATIC ($$) = 1; }
1015 | declspecs_nosc_ts_sa_ea typespec_reserved_attr
1016 { $$ = tree_cons (NULL_TREE, $2, $1);
1017 TREE_STATIC ($$) = 1; }
1018 | declspecs_nosc_nots_sa_noea typespec_attr
1019 { $$ = tree_cons (NULL_TREE, $2, $1);
1020 TREE_STATIC ($$) = 1; }
1021 | declspecs_nosc_nots_sa_ea typespec_attr
1022 { $$ = tree_cons (NULL_TREE, $2, $1);
1023 TREE_STATIC ($$) = 1; }
1026 declspecs_sc_nots_nosa_noea:
1028 { $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
1029 TREE_STATIC ($$) = 0; }
1030 | declspecs_sc_nots_nosa_noea TYPE_QUAL
1031 { $$ = tree_cons (NULL_TREE, $2, $1);
1032 TREE_STATIC ($$) = 1; }
1033 | declspecs_sc_nots_nosa_ea TYPE_QUAL
1034 { $$ = tree_cons (NULL_TREE, $2, $1);
1035 TREE_STATIC ($$) = 1; }
1036 | declspecs_nosc_nots_nosa_noea SCSPEC
1037 { if (extra_warnings && TREE_STATIC ($1))
1038 warning ("`%s' is not at beginning of declaration",
1039 IDENTIFIER_POINTER ($2));
1040 $$ = tree_cons (NULL_TREE, $2, $1);
1041 TREE_STATIC ($$) = TREE_STATIC ($1); }
1042 | declspecs_nosc_nots_nosa_ea SCSPEC
1043 { if (extra_warnings && TREE_STATIC ($1))
1044 warning ("`%s' is not at beginning of declaration",
1045 IDENTIFIER_POINTER ($2));
1046 $$ = tree_cons (NULL_TREE, $2, $1);
1047 TREE_STATIC ($$) = TREE_STATIC ($1); }
1048 | declspecs_sc_nots_nosa_noea SCSPEC
1049 { if (extra_warnings && TREE_STATIC ($1))
1050 warning ("`%s' is not at beginning of declaration",
1051 IDENTIFIER_POINTER ($2));
1052 $$ = tree_cons (NULL_TREE, $2, $1);
1053 TREE_STATIC ($$) = TREE_STATIC ($1); }
1054 | declspecs_sc_nots_nosa_ea SCSPEC
1055 { if (extra_warnings && TREE_STATIC ($1))
1056 warning ("`%s' is not at beginning of declaration",
1057 IDENTIFIER_POINTER ($2));
1058 $$ = tree_cons (NULL_TREE, $2, $1);
1059 TREE_STATIC ($$) = TREE_STATIC ($1); }
1062 declspecs_sc_nots_nosa_ea:
1063 declspecs_sc_nots_nosa_noea attributes
1064 { $$ = tree_cons ($2, NULL_TREE, $1);
1065 TREE_STATIC ($$) = TREE_STATIC ($1); }
1068 declspecs_sc_nots_sa_noea:
1069 declspecs_sc_nots_sa_noea TYPE_QUAL
1070 { $$ = tree_cons (NULL_TREE, $2, $1);
1071 TREE_STATIC ($$) = 1; }
1072 | declspecs_sc_nots_sa_ea TYPE_QUAL
1073 { $$ = tree_cons (NULL_TREE, $2, $1);
1074 TREE_STATIC ($$) = 1; }
1075 | declspecs_nosc_nots_sa_noea SCSPEC
1076 { if (extra_warnings && TREE_STATIC ($1))
1077 warning ("`%s' is not at beginning of declaration",
1078 IDENTIFIER_POINTER ($2));
1079 $$ = tree_cons (NULL_TREE, $2, $1);
1080 TREE_STATIC ($$) = TREE_STATIC ($1); }
1081 | declspecs_nosc_nots_sa_ea SCSPEC
1082 { if (extra_warnings && TREE_STATIC ($1))
1083 warning ("`%s' is not at beginning of declaration",
1084 IDENTIFIER_POINTER ($2));
1085 $$ = tree_cons (NULL_TREE, $2, $1);
1086 TREE_STATIC ($$) = TREE_STATIC ($1); }
1087 | declspecs_sc_nots_sa_noea SCSPEC
1088 { if (extra_warnings && TREE_STATIC ($1))
1089 warning ("`%s' is not at beginning of declaration",
1090 IDENTIFIER_POINTER ($2));
1091 $$ = tree_cons (NULL_TREE, $2, $1);
1092 TREE_STATIC ($$) = TREE_STATIC ($1); }
1093 | declspecs_sc_nots_sa_ea SCSPEC
1094 { if (extra_warnings && TREE_STATIC ($1))
1095 warning ("`%s' is not at beginning of declaration",
1096 IDENTIFIER_POINTER ($2));
1097 $$ = tree_cons (NULL_TREE, $2, $1);
1098 TREE_STATIC ($$) = TREE_STATIC ($1); }
1101 declspecs_sc_nots_sa_ea:
1102 declspecs_sc_nots_sa_noea attributes
1103 { $$ = tree_cons ($2, NULL_TREE, $1);
1104 TREE_STATIC ($$) = TREE_STATIC ($1); }
1107 declspecs_sc_ts_nosa_noea:
1108 declspecs_sc_ts_nosa_noea TYPE_QUAL
1109 { $$ = tree_cons (NULL_TREE, $2, $1);
1110 TREE_STATIC ($$) = 1; }
1111 | declspecs_sc_ts_nosa_ea TYPE_QUAL
1112 { $$ = tree_cons (NULL_TREE, $2, $1);
1113 TREE_STATIC ($$) = 1; }
1114 | declspecs_sc_ts_nosa_noea typespec_reserved_nonattr
1115 { $$ = tree_cons (NULL_TREE, $2, $1);
1116 TREE_STATIC ($$) = 1; }
1117 | declspecs_sc_ts_nosa_ea typespec_reserved_nonattr
1118 { $$ = tree_cons (NULL_TREE, $2, $1);
1119 TREE_STATIC ($$) = 1; }
1120 | declspecs_sc_nots_nosa_noea typespec_nonattr
1121 { $$ = tree_cons (NULL_TREE, $2, $1);
1122 TREE_STATIC ($$) = 1; }
1123 | declspecs_sc_nots_nosa_ea typespec_nonattr
1124 { $$ = tree_cons (NULL_TREE, $2, $1);
1125 TREE_STATIC ($$) = 1; }
1126 | declspecs_nosc_ts_nosa_noea SCSPEC
1127 { if (extra_warnings && TREE_STATIC ($1))
1128 warning ("`%s' is not at beginning of declaration",
1129 IDENTIFIER_POINTER ($2));
1130 $$ = tree_cons (NULL_TREE, $2, $1);
1131 TREE_STATIC ($$) = TREE_STATIC ($1); }
1132 | declspecs_nosc_ts_nosa_ea SCSPEC
1133 { if (extra_warnings && TREE_STATIC ($1))
1134 warning ("`%s' is not at beginning of declaration",
1135 IDENTIFIER_POINTER ($2));
1136 $$ = tree_cons (NULL_TREE, $2, $1);
1137 TREE_STATIC ($$) = TREE_STATIC ($1); }
1138 | declspecs_sc_ts_nosa_noea SCSPEC
1139 { if (extra_warnings && TREE_STATIC ($1))
1140 warning ("`%s' is not at beginning of declaration",
1141 IDENTIFIER_POINTER ($2));
1142 $$ = tree_cons (NULL_TREE, $2, $1);
1143 TREE_STATIC ($$) = TREE_STATIC ($1); }
1144 | declspecs_sc_ts_nosa_ea SCSPEC
1145 { if (extra_warnings && TREE_STATIC ($1))
1146 warning ("`%s' is not at beginning of declaration",
1147 IDENTIFIER_POINTER ($2));
1148 $$ = tree_cons (NULL_TREE, $2, $1);
1149 TREE_STATIC ($$) = TREE_STATIC ($1); }
1152 declspecs_sc_ts_nosa_ea:
1153 declspecs_sc_ts_nosa_noea attributes
1154 { $$ = tree_cons ($2, NULL_TREE, $1);
1155 TREE_STATIC ($$) = TREE_STATIC ($1); }
1156 | declspecs_sc_ts_nosa_noea typespec_reserved_attr
1157 { $$ = tree_cons (NULL_TREE, $2, $1);
1158 TREE_STATIC ($$) = 1; }
1159 | declspecs_sc_ts_nosa_ea typespec_reserved_attr
1160 { $$ = tree_cons (NULL_TREE, $2, $1);
1161 TREE_STATIC ($$) = 1; }
1162 | declspecs_sc_nots_nosa_noea typespec_attr
1163 { $$ = tree_cons (NULL_TREE, $2, $1);
1164 TREE_STATIC ($$) = 1; }
1165 | declspecs_sc_nots_nosa_ea typespec_attr
1166 { $$ = tree_cons (NULL_TREE, $2, $1);
1167 TREE_STATIC ($$) = 1; }
1170 declspecs_sc_ts_sa_noea:
1171 declspecs_sc_ts_sa_noea TYPE_QUAL
1172 { $$ = tree_cons (NULL_TREE, $2, $1);
1173 TREE_STATIC ($$) = 1; }
1174 | declspecs_sc_ts_sa_ea TYPE_QUAL
1175 { $$ = tree_cons (NULL_TREE, $2, $1);
1176 TREE_STATIC ($$) = 1; }
1177 | declspecs_sc_ts_sa_noea typespec_reserved_nonattr
1178 { $$ = tree_cons (NULL_TREE, $2, $1);
1179 TREE_STATIC ($$) = 1; }
1180 | declspecs_sc_ts_sa_ea typespec_reserved_nonattr
1181 { $$ = tree_cons (NULL_TREE, $2, $1);
1182 TREE_STATIC ($$) = 1; }
1183 | declspecs_sc_nots_sa_noea typespec_nonattr
1184 { $$ = tree_cons (NULL_TREE, $2, $1);
1185 TREE_STATIC ($$) = 1; }
1186 | declspecs_sc_nots_sa_ea typespec_nonattr
1187 { $$ = tree_cons (NULL_TREE, $2, $1);
1188 TREE_STATIC ($$) = 1; }
1189 | declspecs_nosc_ts_sa_noea SCSPEC
1190 { if (extra_warnings && TREE_STATIC ($1))
1191 warning ("`%s' is not at beginning of declaration",
1192 IDENTIFIER_POINTER ($2));
1193 $$ = tree_cons (NULL_TREE, $2, $1);
1194 TREE_STATIC ($$) = TREE_STATIC ($1); }
1195 | declspecs_nosc_ts_sa_ea SCSPEC
1196 { if (extra_warnings && TREE_STATIC ($1))
1197 warning ("`%s' is not at beginning of declaration",
1198 IDENTIFIER_POINTER ($2));
1199 $$ = tree_cons (NULL_TREE, $2, $1);
1200 TREE_STATIC ($$) = TREE_STATIC ($1); }
1201 | declspecs_sc_ts_sa_noea SCSPEC
1202 { if (extra_warnings && TREE_STATIC ($1))
1203 warning ("`%s' is not at beginning of declaration",
1204 IDENTIFIER_POINTER ($2));
1205 $$ = tree_cons (NULL_TREE, $2, $1);
1206 TREE_STATIC ($$) = TREE_STATIC ($1); }
1207 | declspecs_sc_ts_sa_ea SCSPEC
1208 { if (extra_warnings && TREE_STATIC ($1))
1209 warning ("`%s' is not at beginning of declaration",
1210 IDENTIFIER_POINTER ($2));
1211 $$ = tree_cons (NULL_TREE, $2, $1);
1212 TREE_STATIC ($$) = TREE_STATIC ($1); }
1215 declspecs_sc_ts_sa_ea:
1216 declspecs_sc_ts_sa_noea attributes
1217 { $$ = tree_cons ($2, NULL_TREE, $1);
1218 TREE_STATIC ($$) = TREE_STATIC ($1); }
1219 | declspecs_sc_ts_sa_noea typespec_reserved_attr
1220 { $$ = tree_cons (NULL_TREE, $2, $1);
1221 TREE_STATIC ($$) = 1; }
1222 | declspecs_sc_ts_sa_ea typespec_reserved_attr
1223 { $$ = tree_cons (NULL_TREE, $2, $1);
1224 TREE_STATIC ($$) = 1; }
1225 | declspecs_sc_nots_sa_noea typespec_attr
1226 { $$ = tree_cons (NULL_TREE, $2, $1);
1227 TREE_STATIC ($$) = 1; }
1228 | declspecs_sc_nots_sa_ea typespec_attr
1229 { $$ = tree_cons (NULL_TREE, $2, $1);
1230 TREE_STATIC ($$) = 1; }
1233 /* Particular useful classes of declspecs. */
1235 declspecs_nosc_ts_nosa_noea
1236 | declspecs_nosc_ts_nosa_ea
1237 | declspecs_nosc_ts_sa_noea
1238 | declspecs_nosc_ts_sa_ea
1239 | declspecs_sc_ts_nosa_noea
1240 | declspecs_sc_ts_nosa_ea
1241 | declspecs_sc_ts_sa_noea
1242 | declspecs_sc_ts_sa_ea
1246 declspecs_nosc_nots_nosa_noea
1247 | declspecs_nosc_nots_nosa_ea
1248 | declspecs_nosc_nots_sa_noea
1249 | declspecs_nosc_nots_sa_ea
1250 | declspecs_sc_nots_nosa_noea
1251 | declspecs_sc_nots_nosa_ea
1252 | declspecs_sc_nots_sa_noea
1253 | declspecs_sc_nots_sa_ea
1257 declspecs_nosc_ts_nosa_noea
1258 | declspecs_nosc_ts_nosa_ea
1259 | declspecs_sc_ts_nosa_noea
1260 | declspecs_sc_ts_nosa_ea
1263 declspecs_nots_nosa:
1264 declspecs_nosc_nots_nosa_noea
1265 | declspecs_nosc_nots_nosa_ea
1266 | declspecs_sc_nots_nosa_noea
1267 | declspecs_sc_nots_nosa_ea
1271 declspecs_nosc_ts_nosa_noea
1272 | declspecs_nosc_ts_nosa_ea
1273 | declspecs_nosc_ts_sa_noea
1274 | declspecs_nosc_ts_sa_ea
1277 declspecs_nosc_nots:
1278 declspecs_nosc_nots_nosa_noea
1279 | declspecs_nosc_nots_nosa_ea
1280 | declspecs_nosc_nots_sa_noea
1281 | declspecs_nosc_nots_sa_ea
1285 declspecs_nosc_ts_nosa_noea
1286 | declspecs_nosc_ts_nosa_ea
1287 | declspecs_nosc_ts_sa_noea
1288 | declspecs_nosc_ts_sa_ea
1289 | declspecs_nosc_nots_nosa_noea
1290 | declspecs_nosc_nots_nosa_ea
1291 | declspecs_nosc_nots_sa_noea
1292 | declspecs_nosc_nots_sa_ea
1296 declspecs_nosc_nots_nosa_noea
1297 | declspecs_nosc_nots_nosa_ea
1298 | declspecs_nosc_nots_sa_noea
1299 | declspecs_nosc_nots_sa_ea
1300 | declspecs_nosc_ts_nosa_noea
1301 | declspecs_nosc_ts_nosa_ea
1302 | declspecs_nosc_ts_sa_noea
1303 | declspecs_nosc_ts_sa_ea
1304 | declspecs_sc_nots_nosa_noea
1305 | declspecs_sc_nots_nosa_ea
1306 | declspecs_sc_nots_sa_noea
1307 | declspecs_sc_nots_sa_ea
1308 | declspecs_sc_ts_nosa_noea
1309 | declspecs_sc_ts_nosa_ea
1310 | declspecs_sc_ts_sa_noea
1311 | declspecs_sc_ts_sa_ea
1314 /* A (possibly empty) sequence of type qualifiers and attributes. */
1315 maybe_type_quals_attrs:
1318 | declspecs_nosc_nots
1322 /* A type specifier (but not a type qualifier).
1323 Once we have seen one of these in a declaration,
1324 if a typedef name appears then it is being redeclared.
1326 The _reserved versions start with a reserved word and may appear anywhere
1327 in the declaration specifiers; the _nonreserved versions may only
1328 appear before any other type specifiers, and after that are (if names)
1331 FIXME: should the _nonreserved version be restricted to names being
1332 redeclared only? The other entries there relate only the GNU extensions
1333 and Objective C, and are historically parsed thus, and don't make sense
1334 after other type specifiers, but it might be cleaner to count them as
1337 _attr means: specifiers that either end with attributes,
1338 or are such that any following attributes would
1339 be parsed as part of the specifier.
1341 _nonattr: specifiers. */
1344 typespec_reserved_nonattr
1345 | typespec_nonreserved_nonattr
1349 typespec_reserved_attr
1352 typespec_reserved_nonattr:
1354 { OBJC_NEED_RAW_IDENTIFIER (1); }
1358 typespec_reserved_attr:
1362 typespec_nonreserved_nonattr:
1364 { /* For a typedef name, record the meaning, not the name.
1365 In case of `foo foo, bar;'. */
1366 $$ = lookup_name ($1); }
1368 | CLASSNAME protocolrefs
1369 { $$ = get_static_reference ($1, $2); }
1370 | OBJECTNAME protocolrefs
1371 { $$ = get_object_reference ($2); }
1373 /* Make "<SomeProtocol>" equivalent to "id <SomeProtocol>"
1374 - nisse@lysator.liu.se */
1375 | non_empty_protocolrefs
1376 { $$ = get_object_reference ($1); }
1378 | TYPEOF '(' expr ')'
1379 { $$ = TREE_TYPE ($3); }
1380 | TYPEOF '(' typename ')'
1381 { $$ = groktypename ($3); }
1384 /* typespec_nonreserved_attr does not exist. */
1388 | initdecls ',' maybe_resetattrs initdcl
1393 | notype_initdecls ',' maybe_resetattrs notype_initdcl
1399 | ASM_KEYWORD '(' string ')'
1400 { if (TREE_CHAIN ($3)) $3 = combine_strings ($3);
1406 declarator maybeasm maybe_attribute '='
1407 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1408 chainon ($3, all_prefix_attributes));
1409 start_init ($<ttype>$, $2, global_bindings_p ()); }
1411 /* Note how the declaration of the variable is in effect while its init is parsed! */
1413 finish_decl ($<ttype>5, $6, $2); }
1414 | declarator maybeasm maybe_attribute
1415 { tree d = start_decl ($1, current_declspecs, 0,
1416 chainon ($3, all_prefix_attributes));
1417 finish_decl (d, NULL_TREE, $2);
1422 notype_declarator maybeasm maybe_attribute '='
1423 { $<ttype>$ = start_decl ($1, current_declspecs, 1,
1424 chainon ($3, all_prefix_attributes));
1425 start_init ($<ttype>$, $2, global_bindings_p ()); }
1427 /* Note how the declaration of the variable is in effect while its init is parsed! */
1429 finish_decl ($<ttype>5, $6, $2); }
1430 | notype_declarator maybeasm maybe_attribute
1431 { tree d = start_decl ($1, current_declspecs, 0,
1432 chainon ($3, all_prefix_attributes));
1433 finish_decl (d, NULL_TREE, $2); }
1435 /* the * rules are dummies to accept the Apollo extended syntax
1436 so that the header files compile. */
1447 | attributes attribute
1448 { $$ = chainon ($1, $2); }
1452 ATTRIBUTE '(' '(' attribute_list ')' ')'
1459 | attribute_list ',' attrib
1460 { $$ = chainon ($1, $3); }
1467 { $$ = build_tree_list ($1, NULL_TREE); }
1468 | any_word '(' IDENTIFIER ')'
1469 { $$ = build_tree_list ($1, build_tree_list (NULL_TREE, $3)); }
1470 | any_word '(' IDENTIFIER ',' nonnull_exprlist ')'
1471 { $$ = build_tree_list ($1, tree_cons (NULL_TREE, $3, $5)); }
1472 | any_word '(' exprlist ')'
1473 { $$ = build_tree_list ($1, $3); }
1476 /* This still leaves out most reserved keywords,
1477 shouldn't we include them? */
1486 /* Initializers. `init' is the entry point. */
1491 { really_start_incremental_init (NULL_TREE); }
1492 initlist_maybe_comma '}'
1493 { $$ = pop_init_level (0); }
1495 { $$ = error_mark_node; }
1498 /* `initlist_maybe_comma' is the guts of an initializer in braces. */
1499 initlist_maybe_comma:
1502 pedwarn ("ISO C forbids empty initializer braces"); }
1503 | initlist1 maybecomma
1508 | initlist1 ',' initelt
1511 /* `initelt' is a single element of an initializer.
1512 It may use braces. */
1514 designator_list '=' initval
1515 { if (pedantic && ! flag_isoc99)
1516 pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
1517 | designator initval
1519 pedwarn ("obsolete use of designated initializer without `='"); }
1521 { set_init_label ($1);
1523 pedwarn ("obsolete use of designated initializer with `:'"); }
1530 { push_init_level (0); }
1531 initlist_maybe_comma '}'
1532 { process_init_element (pop_init_level (0)); }
1534 { process_init_element ($1); }
1540 | designator_list designator
1545 { set_init_label ($2); }
1546 /* These are for labeled elements. The syntax for an array element
1547 initializer conflicts with the syntax for an Objective-C message,
1548 so don't include these productions in the Objective-C grammar. */
1550 | '[' expr_no_commas ELLIPSIS expr_no_commas ']'
1551 { set_init_index ($2, $4);
1553 pedwarn ("ISO C forbids specifying range of elements to initialize"); }
1554 | '[' expr_no_commas ']'
1555 { set_init_index ($2, NULL_TREE); }
1562 pedwarn ("ISO C forbids nested functions");
1564 push_function_context ();
1565 if (! start_function (current_declspecs, $1,
1566 all_prefix_attributes))
1568 pop_function_context ();
1572 old_style_parm_decls
1573 { store_parm_decls (); }
1574 /* This used to use compstmt_or_error.
1575 That caused a bug with input `f(g) int g {}',
1576 where the use of YYERROR1 above caused an error
1577 which then was handled by compstmt_or_error.
1578 There followed a repeated execution of that same rule,
1579 which called YYERROR1 again, and so on. */
1580 save_filename save_lineno compstmt
1581 { tree decl = current_function_decl;
1582 DECL_SOURCE_FILE (decl) = $5;
1583 DECL_SOURCE_LINE (decl) = $6;
1584 finish_function (1);
1585 pop_function_context ();
1586 add_decl_stmt (decl); }
1589 notype_nested_function:
1592 pedwarn ("ISO C forbids nested functions");
1594 push_function_context ();
1595 if (! start_function (current_declspecs, $1,
1596 all_prefix_attributes))
1598 pop_function_context ();
1602 old_style_parm_decls
1603 { store_parm_decls (); }
1604 /* This used to use compstmt_or_error.
1605 That caused a bug with input `f(g) int g {}',
1606 where the use of YYERROR1 above caused an error
1607 which then was handled by compstmt_or_error.
1608 There followed a repeated execution of that same rule,
1609 which called YYERROR1 again, and so on. */
1610 save_filename save_lineno compstmt
1611 { tree decl = current_function_decl;
1612 DECL_SOURCE_FILE (decl) = $5;
1613 DECL_SOURCE_LINE (decl) = $6;
1614 finish_function (1);
1615 pop_function_context ();
1616 add_decl_stmt (decl); }
1619 /* Any kind of declarator (thus, all declarators allowed
1620 after an explicit typespec). */
1623 after_type_declarator
1627 /* A declarator that is allowed only after an explicit typespec. */
1629 after_type_declarator:
1630 '(' maybe_attribute after_type_declarator ')'
1631 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1632 | after_type_declarator '(' parmlist_or_identifiers %prec '.'
1633 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1634 /* | after_type_declarator '(' error ')' %prec '.'
1635 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1636 poplevel (0, 0, 0); } */
1637 | after_type_declarator array_declarator %prec '.'
1638 { $$ = set_array_declarator_type ($2, $1, 0); }
1639 | '*' maybe_type_quals_attrs after_type_declarator %prec UNARY
1640 { $$ = make_pointer_declarator ($2, $3); }
1647 /* Kinds of declarator that can appear in a parameter list
1648 in addition to notype_declarator. This is like after_type_declarator
1649 but does not allow a typedef name in parentheses as an identifier
1650 (because it would conflict with a function with that typedef as arg). */
1652 parm_declarator_starttypename
1653 | parm_declarator_nostarttypename
1656 parm_declarator_starttypename:
1657 parm_declarator_starttypename '(' parmlist_or_identifiers %prec '.'
1658 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1659 /* | parm_declarator_starttypename '(' error ')' %prec '.'
1660 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1661 poplevel (0, 0, 0); } */
1662 | parm_declarator_starttypename array_declarator %prec '.'
1663 { $$ = set_array_declarator_type ($2, $1, 0); }
1670 parm_declarator_nostarttypename:
1671 parm_declarator_nostarttypename '(' parmlist_or_identifiers %prec '.'
1672 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1673 /* | parm_declarator_nostarttypename '(' error ')' %prec '.'
1674 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1675 poplevel (0, 0, 0); } */
1676 | parm_declarator_nostarttypename array_declarator %prec '.'
1677 { $$ = set_array_declarator_type ($2, $1, 0); }
1678 | '*' maybe_type_quals_attrs parm_declarator_starttypename %prec UNARY
1679 { $$ = make_pointer_declarator ($2, $3); }
1680 | '*' maybe_type_quals_attrs parm_declarator_nostarttypename %prec UNARY
1681 { $$ = make_pointer_declarator ($2, $3); }
1682 | '(' maybe_attribute parm_declarator_nostarttypename ')'
1683 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1686 /* A declarator allowed whether or not there has been
1687 an explicit typespec. These cannot redeclare a typedef-name. */
1690 notype_declarator '(' parmlist_or_identifiers %prec '.'
1691 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1692 /* | notype_declarator '(' error ')' %prec '.'
1693 { $$ = build_nt (CALL_EXPR, $1, NULL_TREE, NULL_TREE);
1694 poplevel (0, 0, 0); } */
1695 | '(' maybe_attribute notype_declarator ')'
1696 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1697 | '*' maybe_type_quals_attrs notype_declarator %prec UNARY
1698 { $$ = make_pointer_declarator ($2, $3); }
1699 | notype_declarator array_declarator %prec '.'
1700 { $$ = set_array_declarator_type ($2, $1, 0); }
1725 /* structsp_attr: struct/union/enum specifiers that either
1726 end with attributes, or are such that any following attributes would
1727 be parsed as part of the struct/union/enum specifier.
1729 structsp_nonattr: other struct/union/enum specifiers. */
1732 struct_head identifier '{'
1733 { $$ = start_struct (RECORD_TYPE, $2);
1734 /* Start scope of tag before parsing components. */
1736 component_decl_list '}' maybe_attribute
1737 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1738 | struct_head '{' component_decl_list '}' maybe_attribute
1739 { $$ = finish_struct (start_struct (RECORD_TYPE, NULL_TREE),
1740 $3, chainon ($1, $5));
1742 | union_head identifier '{'
1743 { $$ = start_struct (UNION_TYPE, $2); }
1744 component_decl_list '}' maybe_attribute
1745 { $$ = finish_struct ($<ttype>4, $5, chainon ($1, $7)); }
1746 | union_head '{' component_decl_list '}' maybe_attribute
1747 { $$ = finish_struct (start_struct (UNION_TYPE, NULL_TREE),
1748 $3, chainon ($1, $5));
1750 | enum_head identifier '{'
1751 { $$ = start_enum ($2); }
1752 enumlist maybecomma_warn '}' maybe_attribute
1753 { $$ = finish_enum ($<ttype>4, nreverse ($5),
1754 chainon ($1, $8)); }
1756 { $$ = start_enum (NULL_TREE); }
1757 enumlist maybecomma_warn '}' maybe_attribute
1758 { $$ = finish_enum ($<ttype>3, nreverse ($4),
1759 chainon ($1, $7)); }
1763 struct_head identifier
1764 { $$ = xref_tag (RECORD_TYPE, $2); }
1765 | union_head identifier
1766 { $$ = xref_tag (UNION_TYPE, $2); }
1767 | enum_head identifier
1768 { $$ = xref_tag (ENUMERAL_TYPE, $2);
1769 /* In ISO C, enumerated types can be referred to
1770 only if already defined. */
1771 if (pedantic && !COMPLETE_TYPE_P ($$))
1772 pedwarn ("ISO C forbids forward references to `enum' types"); }
1783 { if (pedantic && ! flag_isoc99)
1784 pedwarn ("comma at end of enumerator list"); }
1787 component_decl_list:
1788 component_decl_list2
1790 | component_decl_list2 component_decl
1791 { $$ = chainon ($1, $2);
1792 pedwarn ("no semicolon at end of struct or union"); }
1795 component_decl_list2: /* empty */
1797 | component_decl_list2 component_decl ';'
1798 { $$ = chainon ($1, $2); }
1799 | component_decl_list2 ';'
1801 pedwarn ("extra semicolon in struct or union specified"); }
1803 /* foo(sizeof(struct{ @defs(ClassName)})); */
1804 | DEFS '(' CLASSNAME ')'
1806 tree interface = lookup_interface ($3);
1809 $$ = get_class_ivars (interface);
1812 error ("Cannot find interface declaration for `%s'",
1813 IDENTIFIER_POINTER ($3));
1821 declspecs_nosc_ts setspecs components
1823 POP_DECLSPEC_STACK; }
1824 | declspecs_nosc_ts setspecs save_filename save_lineno
1826 /* Support for unnamed structs or unions as members of
1827 structs or unions (which is [a] useful and [b] supports
1830 pedwarn ("ISO C doesn't support unnamed structs/unions");
1832 $$ = grokfield($3, $4, NULL, current_declspecs, NULL_TREE);
1833 POP_DECLSPEC_STACK; }
1834 | declspecs_nosc_nots setspecs components_notype
1836 POP_DECLSPEC_STACK; }
1837 | declspecs_nosc_nots
1839 pedwarn ("ISO C forbids member declarations with no members");
1844 | extension component_decl
1846 RESTORE_WARN_FLAGS ($1); }
1850 component_declarator
1851 | components ',' maybe_resetattrs component_declarator
1852 { $$ = chainon ($1, $4); }
1856 component_notype_declarator
1857 | components_notype ',' maybe_resetattrs component_notype_declarator
1858 { $$ = chainon ($1, $4); }
1861 component_declarator:
1862 save_filename save_lineno declarator maybe_attribute
1863 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1864 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1865 | save_filename save_lineno
1866 declarator ':' expr_no_commas maybe_attribute
1867 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1868 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1869 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1870 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1871 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1874 component_notype_declarator:
1875 save_filename save_lineno notype_declarator maybe_attribute
1876 { $$ = grokfield ($1, $2, $3, current_declspecs, NULL_TREE);
1877 decl_attributes (&$$, chainon ($4, all_prefix_attributes), 0); }
1878 | save_filename save_lineno
1879 notype_declarator ':' expr_no_commas maybe_attribute
1880 { $$ = grokfield ($1, $2, $3, current_declspecs, $5);
1881 decl_attributes (&$$, chainon ($6, all_prefix_attributes), 0); }
1882 | save_filename save_lineno ':' expr_no_commas maybe_attribute
1883 { $$ = grokfield ($1, $2, NULL_TREE, current_declspecs, $4);
1884 decl_attributes (&$$, chainon ($5, all_prefix_attributes), 0); }
1887 /* We chain the enumerators in reverse order.
1888 They are put in forward order where enumlist is used.
1889 (The order used to be significant, but no longer is so.
1890 However, we still maintain the order, just to be clean.) */
1894 | enumlist ',' enumerator
1895 { if ($1 == error_mark_node)
1898 $$ = chainon ($3, $1); }
1900 { $$ = error_mark_node; }
1906 { $$ = build_enumerator ($1, NULL_TREE); }
1907 | identifier '=' expr_no_commas
1908 { $$ = build_enumerator ($1, $3); }
1913 { tree specs, attrs;
1914 pending_xref_error ();
1915 split_specs_attrs ($1, &specs, &attrs);
1916 /* We don't yet support attributes here. */
1917 if (attrs != NULL_TREE)
1918 warning ("attributes on type name ignored");
1919 $<ttype>$ = specs; }
1921 { $$ = build_tree_list ($<ttype>2, $3); }
1924 absdcl: /* an absolute declarator */
1930 absdcl_maybe_attribute: /* absdcl maybe_attribute, but not just attributes */
1932 { $$ = build_tree_list (build_tree_list (current_declspecs,
1934 all_prefix_attributes); }
1936 { $$ = build_tree_list (build_tree_list (current_declspecs,
1938 all_prefix_attributes); }
1939 | absdcl1_noea attributes
1940 { $$ = build_tree_list (build_tree_list (current_declspecs,
1942 chainon ($2, all_prefix_attributes)); }
1945 absdcl1: /* a nonempty absolute declarator */
1952 | '*' maybe_type_quals_attrs absdcl1_noea
1953 { $$ = make_pointer_declarator ($2, $3); }
1957 '*' maybe_type_quals_attrs
1958 { $$ = make_pointer_declarator ($2, NULL_TREE); }
1959 | '*' maybe_type_quals_attrs absdcl1_ea
1960 { $$ = make_pointer_declarator ($2, $3); }
1964 '(' maybe_attribute absdcl1 ')'
1965 { $$ = $2 ? tree_cons ($2, $3, NULL_TREE) : $3; }
1966 | direct_absdcl1 '(' parmlist
1967 { $$ = build_nt (CALL_EXPR, $1, $3, NULL_TREE); }
1968 | direct_absdcl1 array_declarator
1969 { $$ = set_array_declarator_type ($2, $1, 1); }
1971 { $$ = build_nt (CALL_EXPR, NULL_TREE, $2, NULL_TREE); }
1973 { $$ = set_array_declarator_type ($1, NULL_TREE, 1); }
1976 /* The [...] part of a declarator for an array type. */
1980 { $$ = build_array_declarator ($2, NULL_TREE, 0, 0); }
1981 | '[' declspecs_nosc expr ']'
1982 { $$ = build_array_declarator ($3, $2, 0, 0); }
1984 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 0); }
1985 | '[' declspecs_nosc ']'
1986 { $$ = build_array_declarator (NULL_TREE, $2, 0, 0); }
1988 { $$ = build_array_declarator (NULL_TREE, NULL_TREE, 0, 1); }
1989 | '[' declspecs_nosc '*' ']'
1990 { $$ = build_array_declarator (NULL_TREE, $2, 0, 1); }
1991 | '[' SCSPEC expr ']'
1992 { if (C_RID_CODE ($2) != RID_STATIC)
1993 error ("storage class specifier in array declarator");
1994 $$ = build_array_declarator ($3, NULL_TREE, 1, 0); }
1995 | '[' SCSPEC declspecs_nosc expr ']'
1996 { if (C_RID_CODE ($2) != RID_STATIC)
1997 error ("storage class specifier in array declarator");
1998 $$ = build_array_declarator ($4, $3, 1, 0); }
1999 | '[' declspecs_nosc SCSPEC expr ']'
2000 { if (C_RID_CODE ($3) != RID_STATIC)
2001 error ("storage class specifier in array declarator");
2002 $$ = build_array_declarator ($4, $2, 1, 0); }
2005 /* A nonempty series of declarations and statements (possibly followed by
2006 some labels) that can form the body of a compound statement.
2007 NOTE: we don't allow labels on declarations; this might seem like a
2008 natural extension, but there would be a conflict between attributes
2009 on the label and prefix attributes on the declaration. */
2012 lineno_stmt_decl_or_labels_ending_stmt
2013 | lineno_stmt_decl_or_labels_ending_decl
2014 | lineno_stmt_decl_or_labels_ending_label
2016 pedwarn ("deprecated use of label at end of compound statement");
2018 | lineno_stmt_decl_or_labels_ending_error
2021 lineno_stmt_decl_or_labels_ending_stmt:
2023 | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
2024 | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
2025 | lineno_stmt_decl_or_labels_ending_label lineno_stmt
2026 | lineno_stmt_decl_or_labels_ending_error lineno_stmt
2029 lineno_stmt_decl_or_labels_ending_decl:
2031 | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
2032 { if (pedantic && !flag_isoc99)
2033 pedwarn ("ISO C89 forbids mixed declarations and code"); }
2034 | lineno_stmt_decl_or_labels_ending_decl lineno_decl
2035 | lineno_stmt_decl_or_labels_ending_error lineno_decl
2038 lineno_stmt_decl_or_labels_ending_label:
2040 | lineno_stmt_decl_or_labels_ending_stmt lineno_label
2041 | lineno_stmt_decl_or_labels_ending_decl lineno_label
2042 | lineno_stmt_decl_or_labels_ending_label lineno_label
2043 | lineno_stmt_decl_or_labels_ending_error lineno_label
2046 lineno_stmt_decl_or_labels_ending_error:
2048 | lineno_stmt_decl_or_labels errstmt
2051 lineno_stmt_decl_or_labels:
2052 lineno_stmt_decl_or_labels_ending_stmt
2053 | lineno_stmt_decl_or_labels_ending_decl
2054 | lineno_stmt_decl_or_labels_ending_label
2055 | lineno_stmt_decl_or_labels_ending_error
2061 pushlevel: /* empty */
2064 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2066 if (objc_method_context)
2072 poplevel: /* empty */
2073 { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
2075 /* Start and end blocks created for the new scopes of C99. */
2076 c99_block_start: /* empty */
2079 $$ = c_begin_compound_stmt ();
2082 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
2084 if (objc_method_context)
2093 /* Productions using c99_block_start and c99_block_end will need to do what's
2094 in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
2095 $1 is the value of c99_block_start and $2 of c99_block_end. */
2096 c99_block_end: /* empty */
2099 tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
2100 $$ = poplevel (kept_level_p (), 0, 0);
2101 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
2102 = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
2109 /* Read zero or more forward-declarations for labels
2110 that nested functions can jump to. */
2115 pedwarn ("ISO C forbids label declarations"); }
2120 | label_decls label_decl
2124 LABEL identifiers_or_typenames ';'
2126 for (link = $2; link; link = TREE_CHAIN (link))
2128 tree label = shadow_label (TREE_VALUE (link));
2129 C_DECLARED_LABEL_FLAG (label) = 1;
2130 add_decl_stmt (label);
2135 /* This is the body of a function definition.
2136 It causes syntax errors to ignore to the next openbrace. */
2143 compstmt_start: '{' { compstmt_count++;
2144 $$ = c_begin_compound_stmt (); }
2146 compstmt_nostart: '}'
2147 { $$ = convert (void_type_node, integer_zero_node); }
2148 | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
2149 { $$ = poplevel (kept_level_p (), 1, 0);
2150 SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
2151 = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
2155 compstmt_contents_nonempty:
2160 compstmt_primary_start:
2162 { if (current_function_decl == 0)
2164 error ("braced-group within expression allowed only inside a function");
2167 /* We must force a BLOCK for this level
2168 so that, if it is not expanded later,
2169 there is a way to turn off the entire subtree of blocks
2170 that are contained in it. */
2172 push_label_level ();
2174 $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
2177 compstmt: compstmt_start compstmt_nostart
2178 { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2182 /* Value is number of statements counted as of the closeparen. */
2184 if_prefix c99_block_lineno_labeled_stmt
2185 { c_finish_then (); }
2186 /* Make sure c_expand_end_cond is run once
2187 for each call to c_expand_start_cond.
2188 Otherwise a crash is likely. */
2194 { c_expand_start_cond (truthvalue_conversion ($3),
2196 $<itype>$ = stmt_count;
2197 if_stmt_file = $<filename>-2;
2198 if_stmt_line = $<lineno>-1; }
2201 /* This is a subroutine of stmt.
2202 It is used twice, once for valid DO statements
2203 and once for catching errors in parsing the end test. */
2209 = add_stmt (build_stmt (DO_STMT, NULL_TREE,
2211 /* In the event that a parse error prevents
2212 parsing the complete do-statement, set the
2213 condition now. Otherwise, we can get crashes at
2214 RTL-generation time. */
2215 DO_COND ($<ttype>$) = error_mark_node; }
2216 c99_block_lineno_labeled_stmt WHILE
2218 RECHAIN_STMTS ($$, DO_BODY ($$)); }
2221 /* The forced readahead in here is because we might be at the end of a
2222 line, and the line and file won't be bumped until yylex absorbs the
2223 first token on the next line. */
2225 { if (yychar == YYEMPTY)
2227 $$ = input_filename; }
2231 { if (yychar == YYEMPTY)
2236 lineno_labeled_stmt:
2238 | lineno_label lineno_labeled_stmt
2241 /* Like lineno_labeled_stmt, but a block in C99. */
2242 c99_block_lineno_labeled_stmt:
2243 c99_block_start lineno_labeled_stmt c99_block_end
2245 RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
2249 save_filename save_lineno stmt
2252 STMT_LINENO ($3) = $2;
2253 /* ??? We currently have no way of recording
2254 the filename for a statement. This probably
2255 matters little in practice at the moment,
2256 but I suspect that problems will occur when
2257 doing inlining at the tree level. */
2263 save_filename save_lineno label
2266 STMT_LINENO ($3) = $2;
2271 select_or_iter_stmt:
2273 { c_expand_start_else ();
2274 $<itype>1 = stmt_count; }
2275 c99_block_lineno_labeled_stmt
2277 c_expand_end_cond ();
2278 if (extra_warnings && stmt_count == $<itype>1)
2279 warning ("empty body in an else-statement"); }
2280 | simple_if %prec IF
2281 { c_expand_end_cond ();
2282 /* This warning is here instead of in simple_if, because we
2283 do not want a warning if an empty if is followed by an
2284 else statement. Increment stmt_count so we don't
2285 give a second error if this is a nested `if'. */
2286 if (extra_warnings && stmt_count++ == $<itype>1)
2287 warning_with_file_and_line (if_stmt_file, if_stmt_line,
2288 "empty body in an if-statement"); }
2289 /* Make sure c_expand_end_cond is run once
2290 for each call to c_expand_start_cond.
2291 Otherwise a crash is likely. */
2292 | simple_if ELSE error
2293 { c_expand_end_cond (); }
2297 { $4 = truthvalue_conversion ($4);
2299 = add_stmt (build_stmt (WHILE_STMT, $4, NULL_TREE)); }
2300 c99_block_lineno_labeled_stmt
2301 { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
2304 { DO_COND ($1) = truthvalue_conversion ($3); }
2305 | do_stmt_start error
2308 { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
2309 NULL_TREE, NULL_TREE);
2310 add_stmt ($<ttype>$); }
2313 RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
2316 FOR_COND ($<ttype>2) = truthvalue_conversion ($6); }
2318 { FOR_EXPR ($<ttype>2) = $9; }
2319 c99_block_lineno_labeled_stmt
2320 { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
2321 | SWITCH '(' expr ')'
2323 $<ttype>$ = c_start_case ($3); }
2324 c99_block_lineno_labeled_stmt
2325 { c_finish_case (); }
2330 { add_stmt (build_stmt (EXPR_STMT, $1)); }
2332 { check_for_loop_decls (); }
2335 /* Parse a single real statement, not including any labels. */
2338 { stmt_count++; $$ = $1; }
2341 $$ = c_expand_expr_stmt ($1); }
2342 | c99_block_start select_or_iter_stmt c99_block_end
2344 RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
2348 $$ = add_stmt (build_break_stmt ()); }
2351 $$ = add_stmt (build_continue_stmt ()); }
2354 $$ = c_expand_return (NULL_TREE); }
2357 $$ = c_expand_return ($2); }
2358 | ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
2360 $$ = simple_asm_stmt ($4); }
2361 /* This is the case with just output operands. */
2362 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
2364 $$ = build_asm_stmt ($2, $4, $6, NULL_TREE, NULL_TREE); }
2365 /* This is the case with input operands as well. */
2366 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2367 asm_operands ')' ';'
2369 $$ = build_asm_stmt ($2, $4, $6, $8, NULL_TREE); }
2370 /* This is the case with clobbered registers as well. */
2371 | ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
2372 asm_operands ':' asm_clobbers ')' ';'
2374 $$ = build_asm_stmt ($2, $4, $6, $8, $10); }
2375 | GOTO identifier ';'
2378 decl = lookup_label ($2);
2381 TREE_USED (decl) = 1;
2382 $$ = add_stmt (build_stmt (GOTO_STMT, decl));
2389 pedwarn ("ISO C forbids `goto *expr;'");
2391 $3 = convert (ptr_type_node, $3);
2392 $$ = add_stmt (build_stmt (GOTO_STMT, $3)); }
2397 /* Any kind of label, including jump labels and case labels.
2398 ANSI C accepts labels only before statements, but we allow them
2399 also at the end of a compound statement. */
2401 label: CASE expr_no_commas ':'
2403 $$ = do_case ($2, NULL_TREE); }
2404 | CASE expr_no_commas ELLIPSIS expr_no_commas ':'
2406 $$ = do_case ($2, $4); }
2409 $$ = do_case (NULL_TREE, NULL_TREE); }
2410 | identifier save_filename save_lineno ':' maybe_attribute
2411 { tree label = define_label ($2, $3, $1);
2415 decl_attributes (&label, $5, 0);
2416 $$ = add_stmt (build_stmt (LABEL_STMT, label));
2423 /* Either a type-qualifier or nothing. First thing in an `asm' statement. */
2427 { emit_line_note (input_filename, lineno);
2430 { emit_line_note (input_filename, lineno); }
2439 /* These are the operands other than the first string and colon
2440 in asm ("addextend %2,%1": "=dm" (x), "0" (y), "g" (*x)) */
2441 asm_operands: /* empty */
2443 | nonnull_asm_operands
2446 nonnull_asm_operands:
2448 | nonnull_asm_operands ',' asm_operand
2449 { $$ = chainon ($1, $3); }
2454 { $$ = build_tree_list (build_tree_list (NULL_TREE, $1), $3); }
2455 | '[' identifier ']' STRING '(' expr ')'
2456 { $$ = build_tree_list (build_tree_list ($2, $4), $6); }
2461 { $$ = tree_cons (NULL_TREE, combine_strings ($1), NULL_TREE); }
2462 | asm_clobbers ',' string
2463 { $$ = tree_cons (NULL_TREE, combine_strings ($3), $1); }
2466 /* This is what appears inside the parens in a function declarator.
2467 Its value is a list of ..._TYPE nodes. Attributes must appear here
2468 to avoid a conflict with their appearance after an open parenthesis
2469 in an abstract declarator, as in
2470 "void bar (int (__attribute__((__mode__(SI))) int foo));". */
2474 clear_parm_order ();
2475 declare_parm_level (0); }
2478 parmlist_tags_warning ();
2479 poplevel (0, 0, 0); }
2487 pedwarn ("ISO C forbids forward parameter declarations");
2488 /* Mark the forward decls as such. */
2489 for (parm = getdecls (); parm; parm = TREE_CHAIN (parm))
2490 TREE_ASM_WRITTEN (parm) = 1;
2491 clear_parm_order (); }
2493 { /* Dummy action so attributes are in known place
2494 on parser stack. */ }
2498 { $$ = tree_cons (NULL_TREE, NULL_TREE, NULL_TREE); }
2501 /* This is what appears inside the parens in a function declarator.
2502 Is value is represented in the format that grokdeclarator expects. */
2503 parmlist_2: /* empty */
2504 { $$ = get_parm_info (0); }
2506 { $$ = get_parm_info (0);
2507 /* Gcc used to allow this as an extension. However, it does
2508 not work for all targets, and thus has been disabled.
2509 Also, since func (...) and func () are indistinguishable,
2510 it caused problems with the code in expand_builtin which
2511 tries to verify that BUILT_IN_NEXT_ARG is being used
2513 error ("ISO C requires a named argument before `...'");
2516 { $$ = get_parm_info (1); }
2517 | parms ',' ELLIPSIS
2518 { $$ = get_parm_info (0); }
2523 { push_parm_decl ($1); }
2525 { push_parm_decl ($3); }
2528 /* A single parameter declaration or parameter type name,
2529 as found in a parmlist. */
2531 declspecs_ts setspecs parm_declarator maybe_attribute
2532 { $$ = build_tree_list (build_tree_list (current_declspecs,
2534 chainon ($4, all_prefix_attributes));
2535 POP_DECLSPEC_STACK; }
2536 | declspecs_ts setspecs notype_declarator maybe_attribute
2537 { $$ = build_tree_list (build_tree_list (current_declspecs,
2539 chainon ($4, all_prefix_attributes));
2540 POP_DECLSPEC_STACK; }
2541 | declspecs_ts setspecs absdcl_maybe_attribute
2543 POP_DECLSPEC_STACK; }
2544 | declspecs_nots setspecs notype_declarator maybe_attribute
2545 { $$ = build_tree_list (build_tree_list (current_declspecs,
2547 chainon ($4, all_prefix_attributes));
2548 POP_DECLSPEC_STACK; }
2550 | declspecs_nots setspecs absdcl_maybe_attribute
2552 POP_DECLSPEC_STACK; }
2555 /* The first parm, which must suck attributes from off the top of the parser
2558 declspecs_ts_nosa setspecs_fp parm_declarator maybe_attribute
2559 { $$ = build_tree_list (build_tree_list (current_declspecs,
2561 chainon ($4, all_prefix_attributes));
2562 POP_DECLSPEC_STACK; }
2563 | declspecs_ts_nosa setspecs_fp notype_declarator maybe_attribute
2564 { $$ = build_tree_list (build_tree_list (current_declspecs,
2566 chainon ($4, all_prefix_attributes));
2567 POP_DECLSPEC_STACK; }
2568 | declspecs_ts_nosa setspecs_fp absdcl_maybe_attribute
2570 POP_DECLSPEC_STACK; }
2571 | declspecs_nots_nosa setspecs_fp notype_declarator maybe_attribute
2572 { $$ = build_tree_list (build_tree_list (current_declspecs,
2574 chainon ($4, all_prefix_attributes));
2575 POP_DECLSPEC_STACK; }
2577 | declspecs_nots_nosa setspecs_fp absdcl_maybe_attribute
2579 POP_DECLSPEC_STACK; }
2584 { prefix_attributes = chainon (prefix_attributes, $<ttype>-2);
2585 all_prefix_attributes = prefix_attributes; }
2588 /* This is used in a function definition
2589 where either a parmlist or an identifier list is ok.
2590 Its value is a list of ..._TYPE nodes or a list of identifiers. */
2591 parmlist_or_identifiers:
2593 clear_parm_order ();
2594 declare_parm_level (1); }
2595 parmlist_or_identifiers_1
2597 parmlist_tags_warning ();
2598 poplevel (0, 0, 0); }
2601 parmlist_or_identifiers_1:
2605 for (t = $1; t; t = TREE_CHAIN (t))
2606 if (TREE_VALUE (t) == NULL_TREE)
2607 error ("`...' in old-style identifier list");
2608 $$ = tree_cons (NULL_TREE, NULL_TREE, $1); }
2611 /* A nonempty list of identifiers. */
2614 { $$ = build_tree_list (NULL_TREE, $1); }
2615 | identifiers ',' IDENTIFIER
2616 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2619 /* A nonempty list of identifiers, including typenames. */
2620 identifiers_or_typenames:
2622 { $$ = build_tree_list (NULL_TREE, $1); }
2623 | identifiers_or_typenames ',' identifier
2624 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2629 { $$ = SAVE_WARN_FLAGS();
2631 warn_pointer_arith = 0; }
2635 /* Objective-C productions. */
2645 if (objc_implementation_context)
2647 finish_class (objc_implementation_context);
2648 objc_ivar_chain = NULL_TREE;
2649 objc_implementation_context = NULL_TREE;
2652 warning ("`@end' must appear in an implementation context");
2656 /* A nonempty list of identifiers. */
2659 { $$ = build_tree_list (NULL_TREE, $1); }
2660 | identifier_list ',' identifier
2661 { $$ = chainon ($1, build_tree_list (NULL_TREE, $3)); }
2665 CLASS identifier_list ';'
2667 objc_declare_class ($2);
2671 ALIAS identifier identifier ';'
2673 objc_declare_alias ($2, $3);
2677 INTERFACE identifier protocolrefs '{'
2679 objc_interface_context = objc_ivar_context
2680 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2681 objc_public_flag = 0;
2685 continue_class (objc_interface_context);
2690 finish_class (objc_interface_context);
2691 objc_interface_context = NULL_TREE;
2694 | INTERFACE identifier protocolrefs
2696 objc_interface_context
2697 = start_class (CLASS_INTERFACE_TYPE, $2, NULL_TREE, $3);
2698 continue_class (objc_interface_context);
2703 finish_class (objc_interface_context);
2704 objc_interface_context = NULL_TREE;
2707 | INTERFACE identifier ':' identifier protocolrefs '{'
2709 objc_interface_context = objc_ivar_context
2710 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2711 objc_public_flag = 0;
2715 continue_class (objc_interface_context);
2720 finish_class (objc_interface_context);
2721 objc_interface_context = NULL_TREE;
2724 | INTERFACE identifier ':' identifier protocolrefs
2726 objc_interface_context
2727 = start_class (CLASS_INTERFACE_TYPE, $2, $4, $5);
2728 continue_class (objc_interface_context);
2733 finish_class (objc_interface_context);
2734 objc_interface_context = NULL_TREE;
2737 | IMPLEMENTATION identifier '{'
2739 objc_implementation_context = objc_ivar_context
2740 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2741 objc_public_flag = 0;
2746 = continue_class (objc_implementation_context);
2749 | IMPLEMENTATION identifier
2751 objc_implementation_context
2752 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, NULL_TREE, NULL_TREE);
2754 = continue_class (objc_implementation_context);
2757 | IMPLEMENTATION identifier ':' identifier '{'
2759 objc_implementation_context = objc_ivar_context
2760 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2761 objc_public_flag = 0;
2766 = continue_class (objc_implementation_context);
2769 | IMPLEMENTATION identifier ':' identifier
2771 objc_implementation_context
2772 = start_class (CLASS_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2774 = continue_class (objc_implementation_context);
2777 | INTERFACE identifier '(' identifier ')' protocolrefs
2779 objc_interface_context
2780 = start_class (CATEGORY_INTERFACE_TYPE, $2, $4, $6);
2781 continue_class (objc_interface_context);
2786 finish_class (objc_interface_context);
2787 objc_interface_context = NULL_TREE;
2790 | IMPLEMENTATION identifier '(' identifier ')'
2792 objc_implementation_context
2793 = start_class (CATEGORY_IMPLEMENTATION_TYPE, $2, $4, NULL_TREE);
2795 = continue_class (objc_implementation_context);
2800 PROTOCOL identifier protocolrefs
2802 objc_pq_context = 1;
2803 objc_interface_context
2804 = start_protocol(PROTOCOL_INTERFACE_TYPE, $2, $3);
2808 objc_pq_context = 0;
2809 finish_protocol(objc_interface_context);
2810 objc_interface_context = NULL_TREE;
2812 /* The @protocol forward-declaration production introduces a
2813 reduce/reduce conflict on ';', which should be resolved in
2814 favor of the production 'identifier_list -> identifier'. */
2815 | PROTOCOL identifier_list ';'
2817 objc_declare_protocols ($2);
2826 | non_empty_protocolrefs
2829 non_empty_protocolrefs:
2830 ARITHCOMPARE identifier_list ARITHCOMPARE
2832 if ($1 == LT_EXPR && $3 == GT_EXPR)
2840 ivar_decl_list visibility_spec ivar_decls
2845 PRIVATE { objc_public_flag = 2; }
2846 | PROTECTED { objc_public_flag = 0; }
2847 | PUBLIC { objc_public_flag = 1; }
2855 | ivar_decls ivar_decl ';'
2859 pedwarn ("extra semicolon in struct or union specified");
2864 /* There is a shift-reduce conflict here, because `components' may
2865 start with a `typename'. It happens that shifting (the default resolution)
2866 does the right thing, because it treats the `typename' as part of
2867 a `typed_typespecs'.
2869 It is possible that this same technique would allow the distinction
2870 between `notype_initdecls' and `initdecls' to be eliminated.
2871 But I am being cautious and not trying it. */
2874 declspecs_nosc_ts setspecs ivars
2876 POP_DECLSPEC_STACK; }
2877 | declspecs_nosc_nots setspecs ivars
2879 POP_DECLSPEC_STACK; }
2888 | ivars ',' maybe_resetattrs ivar_declarator
2894 $$ = add_instance_variable (objc_ivar_context,
2896 $1, current_declspecs,
2899 | declarator ':' expr_no_commas
2901 $$ = add_instance_variable (objc_ivar_context,
2903 $1, current_declspecs, $3);
2905 | ':' expr_no_commas
2907 $$ = add_instance_variable (objc_ivar_context,
2910 current_declspecs, $2);
2916 { objc_inherit_code = CLASS_METHOD_DECL; }
2918 { objc_inherit_code = INSTANCE_METHOD_DECL; }
2924 objc_pq_context = 1;
2925 if (!objc_implementation_context)
2926 fatal_error ("method definition not in class context");
2930 objc_pq_context = 0;
2931 if (objc_inherit_code == CLASS_METHOD_DECL)
2932 add_class_method (objc_implementation_context, $3);
2934 add_instance_method (objc_implementation_context, $3);
2935 start_method_def ($3);
2939 continue_method_def ();
2943 finish_method_def ();
2947 /* the reason for the strange actions in this rule
2948 is so that notype_initdecls when reached via datadef
2949 can find a valid list of type and sc specs in $0. */
2953 | {$<ttype>$ = NULL_TREE; } methodprotolist2
2956 methodprotolist2: /* eliminates a shift/reduce conflict */
2959 | methodprotolist2 methodproto
2960 | methodprotolist2 {$<ttype>$ = NULL_TREE; } datadef
2971 /* Remember protocol qualifiers in prototypes. */
2972 objc_pq_context = 1;
2976 /* Forget protocol qualifiers here. */
2977 objc_pq_context = 0;
2978 if (objc_inherit_code == CLASS_METHOD_DECL)
2979 add_class_method (objc_interface_context, $3);
2981 add_instance_method (objc_interface_context, $3);
2987 '(' typename ')' unaryselector
2989 $$ = build_method_decl (objc_inherit_code, $2, $4, NULL_TREE);
2994 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, NULL_TREE);
2997 | '(' typename ')' keywordselector optparmlist
2999 $$ = build_method_decl (objc_inherit_code, $2, $4, $5);
3002 | keywordselector optparmlist
3004 $$ = build_method_decl (objc_inherit_code, NULL_TREE, $1, $2);
3008 /* "optarglist" assumes that start_method_def has already been called...
3009 if it is not, the "xdecls" will not be placed in the proper scope */
3016 /* to get around the following situation: "int foo (int a) int b; {}" that
3017 is synthesized when parsing "- a:a b:b; id c; id d; { ... }" */
3032 declspecs_ts setspecs myparms ';'
3033 { POP_DECLSPEC_STACK; }
3035 { shadow_tag ($1); }
3036 | declspecs_nots ';'
3037 { pedwarn ("empty declaration"); }
3042 { push_parm_decl ($1); }
3043 | myparms ',' myparm
3044 { push_parm_decl ($3); }
3047 /* A single parameter declaration or parameter type name,
3048 as found in a parmlist. DOES NOT ALLOW AN INITIALIZER OR ASMSPEC */
3051 parm_declarator maybe_attribute
3052 { $$ = build_tree_list (build_tree_list (current_declspecs,
3054 chainon ($2, all_prefix_attributes)); }
3055 | notype_declarator maybe_attribute
3056 { $$ = build_tree_list (build_tree_list (current_declspecs,
3058 chainon ($2, all_prefix_attributes)); }
3059 | absdcl_maybe_attribute
3070 /* oh what a kludge! */
3071 $$ = objc_ellipsis_node;
3079 /* returns a tree list node generated by get_parm_info */
3092 | keywordselector keyworddecl
3094 $$ = chainon ($1, $2);
3107 ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
3108 | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
3109 | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
3110 | TYPESPEC | TYPE_QUAL
3114 selector ':' '(' typename ')' identifier
3116 $$ = build_keyword_decl ($1, $4, $6);
3119 | selector ':' identifier
3121 $$ = build_keyword_decl ($1, NULL_TREE, $3);
3124 | ':' '(' typename ')' identifier
3126 $$ = build_keyword_decl (NULL_TREE, $3, $5);
3131 $$ = build_keyword_decl (NULL_TREE, NULL_TREE, $2);
3142 | keywordarglist keywordarg
3144 $$ = chainon ($1, $2);
3152 if (TREE_CHAIN ($1) == NULL_TREE)
3153 /* just return the expr., remove a level of indirection */
3154 $$ = TREE_VALUE ($1);
3156 /* we have a comma expr., we will collapse later */
3162 selector ':' keywordexpr
3164 $$ = build_tree_list ($1, $3);
3168 $$ = build_tree_list (NULL_TREE, $2);
3176 $$ = get_class_reference ($1);
3182 { objc_receiver_context = 1; }
3184 { objc_receiver_context = 0; }
3187 $$ = build_tree_list ($3, $5);
3198 | keywordnamelist keywordname
3200 $$ = chainon ($1, $2);
3207 $$ = build_tree_list ($1, NULL_TREE);
3211 $$ = build_tree_list (NULL_TREE, NULL_TREE);
3216 SELECTOR '(' selectorarg ')'
3223 PROTOCOL '(' identifier ')'
3229 /* extension to support C-structures in the archiver */
3232 ENCODE '(' typename ')'
3234 $$ = groktypename ($3);
3241 /* yylex() is a thin wrapper around c_lex(), all it does is translate
3242 cpplib.h's token codes into yacc's token codes. */
3244 static enum cpp_ttype last_token;
3246 /* The reserved keyword table. */
3250 ENUM_BITFIELD(rid) rid : 16;
3251 unsigned int disable : 16;
3254 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
3256 #define D_TRAD 0x01 /* not in traditional C */
3257 #define D_C89 0x02 /* not in C89 */
3258 #define D_EXT 0x04 /* GCC extension */
3259 #define D_EXT89 0x08 /* GCC extension incorporated in C99 */
3260 #define D_OBJC 0x10 /* Objective C only */
3262 static const struct resword reswords[] =
3264 { "_Bool", RID_BOOL, 0 },
3265 { "_Complex", RID_COMPLEX, 0 },
3266 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
3267 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
3268 { "__alignof", RID_ALIGNOF, 0 },
3269 { "__alignof__", RID_ALIGNOF, 0 },
3270 { "__asm", RID_ASM, 0 },
3271 { "__asm__", RID_ASM, 0 },
3272 { "__attribute", RID_ATTRIBUTE, 0 },
3273 { "__attribute__", RID_ATTRIBUTE, 0 },
3274 { "__bounded", RID_BOUNDED, 0 },
3275 { "__bounded__", RID_BOUNDED, 0 },
3276 { "__builtin_va_arg", RID_VA_ARG, 0 },
3277 { "__complex", RID_COMPLEX, 0 },
3278 { "__complex__", RID_COMPLEX, 0 },
3279 { "__const", RID_CONST, 0 },
3280 { "__const__", RID_CONST, 0 },
3281 { "__extension__", RID_EXTENSION, 0 },
3282 { "__func__", RID_C99_FUNCTION_NAME, 0 },
3283 { "__imag", RID_IMAGPART, 0 },
3284 { "__imag__", RID_IMAGPART, 0 },
3285 { "__inline", RID_INLINE, 0 },
3286 { "__inline__", RID_INLINE, 0 },
3287 { "__label__", RID_LABEL, 0 },
3288 { "__ptrbase", RID_PTRBASE, 0 },
3289 { "__ptrbase__", RID_PTRBASE, 0 },
3290 { "__ptrextent", RID_PTREXTENT, 0 },
3291 { "__ptrextent__", RID_PTREXTENT, 0 },
3292 { "__ptrvalue", RID_PTRVALUE, 0 },
3293 { "__ptrvalue__", RID_PTRVALUE, 0 },
3294 { "__real", RID_REALPART, 0 },
3295 { "__real__", RID_REALPART, 0 },
3296 { "__restrict", RID_RESTRICT, 0 },
3297 { "__restrict__", RID_RESTRICT, 0 },
3298 { "__signed", RID_SIGNED, 0 },
3299 { "__signed__", RID_SIGNED, 0 },
3300 { "__typeof", RID_TYPEOF, 0 },
3301 { "__typeof__", RID_TYPEOF, 0 },
3302 { "__unbounded", RID_UNBOUNDED, 0 },
3303 { "__unbounded__", RID_UNBOUNDED, 0 },
3304 { "__volatile", RID_VOLATILE, 0 },
3305 { "__volatile__", RID_VOLATILE, 0 },
3306 { "asm", RID_ASM, D_EXT },
3307 { "auto", RID_AUTO, 0 },
3308 { "break", RID_BREAK, 0 },
3309 { "case", RID_CASE, 0 },
3310 { "char", RID_CHAR, 0 },
3311 { "const", RID_CONST, D_TRAD },
3312 { "continue", RID_CONTINUE, 0 },
3313 { "default", RID_DEFAULT, 0 },
3314 { "do", RID_DO, 0 },
3315 { "double", RID_DOUBLE, 0 },
3316 { "else", RID_ELSE, 0 },
3317 { "enum", RID_ENUM, 0 },
3318 { "extern", RID_EXTERN, 0 },
3319 { "float", RID_FLOAT, 0 },
3320 { "for", RID_FOR, 0 },
3321 { "goto", RID_GOTO, 0 },
3322 { "if", RID_IF, 0 },
3323 { "inline", RID_INLINE, D_TRAD|D_EXT89 },
3324 { "int", RID_INT, 0 },
3325 { "long", RID_LONG, 0 },
3326 { "register", RID_REGISTER, 0 },
3327 { "restrict", RID_RESTRICT, D_TRAD|D_C89 },
3328 { "return", RID_RETURN, 0 },
3329 { "short", RID_SHORT, 0 },
3330 { "signed", RID_SIGNED, D_TRAD },
3331 { "sizeof", RID_SIZEOF, 0 },
3332 { "static", RID_STATIC, 0 },
3333 { "struct", RID_STRUCT, 0 },
3334 { "switch", RID_SWITCH, 0 },
3335 { "typedef", RID_TYPEDEF, 0 },
3336 { "typeof", RID_TYPEOF, D_TRAD|D_EXT },
3337 { "union", RID_UNION, 0 },
3338 { "unsigned", RID_UNSIGNED, 0 },
3339 { "void", RID_VOID, 0 },
3340 { "volatile", RID_VOLATILE, D_TRAD },
3341 { "while", RID_WHILE, 0 },
3343 { "id", RID_ID, D_OBJC },
3345 /* These objc keywords are recognized only immediately after
3347 { "class", RID_AT_CLASS, D_OBJC },
3348 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
3349 { "defs", RID_AT_DEFS, D_OBJC },
3350 { "encode", RID_AT_ENCODE, D_OBJC },
3351 { "end", RID_AT_END, D_OBJC },
3352 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
3353 { "interface", RID_AT_INTERFACE, D_OBJC },
3354 { "private", RID_AT_PRIVATE, D_OBJC },
3355 { "protected", RID_AT_PROTECTED, D_OBJC },
3356 { "protocol", RID_AT_PROTOCOL, D_OBJC },
3357 { "public", RID_AT_PUBLIC, D_OBJC },
3358 { "selector", RID_AT_SELECTOR, D_OBJC },
3360 /* These are recognized only in protocol-qualifier context
3362 { "bycopy", RID_BYCOPY, D_OBJC },
3363 { "byref", RID_BYREF, D_OBJC },
3364 { "in", RID_IN, D_OBJC },
3365 { "inout", RID_INOUT, D_OBJC },
3366 { "oneway", RID_ONEWAY, D_OBJC },
3367 { "out", RID_OUT, D_OBJC },
3370 #define N_reswords (sizeof reswords / sizeof (struct resword))
3372 /* Table mapping from RID_* constants to yacc token numbers.
3373 Unfortunately we have to have entries for all the keywords in all
3375 static const short rid_to_yy[RID_MAX] =
3377 /* RID_STATIC */ SCSPEC,
3378 /* RID_UNSIGNED */ TYPESPEC,
3379 /* RID_LONG */ TYPESPEC,
3380 /* RID_CONST */ TYPE_QUAL,
3381 /* RID_EXTERN */ SCSPEC,
3382 /* RID_REGISTER */ SCSPEC,
3383 /* RID_TYPEDEF */ SCSPEC,
3384 /* RID_SHORT */ TYPESPEC,
3385 /* RID_INLINE */ SCSPEC,
3386 /* RID_VOLATILE */ TYPE_QUAL,
3387 /* RID_SIGNED */ TYPESPEC,
3388 /* RID_AUTO */ SCSPEC,
3389 /* RID_RESTRICT */ TYPE_QUAL,
3392 /* RID_BOUNDED */ TYPE_QUAL,
3393 /* RID_UNBOUNDED */ TYPE_QUAL,
3394 /* RID_COMPLEX */ TYPESPEC,
3398 /* RID_VIRTUAL */ 0,
3399 /* RID_EXPLICIT */ 0,
3401 /* RID_MUTABLE */ 0,
3404 /* RID_IN */ TYPE_QUAL,
3405 /* RID_OUT */ TYPE_QUAL,
3406 /* RID_INOUT */ TYPE_QUAL,
3407 /* RID_BYCOPY */ TYPE_QUAL,
3408 /* RID_BYREF */ TYPE_QUAL,
3409 /* RID_ONEWAY */ TYPE_QUAL,
3412 /* RID_INT */ TYPESPEC,
3413 /* RID_CHAR */ TYPESPEC,
3414 /* RID_FLOAT */ TYPESPEC,
3415 /* RID_DOUBLE */ TYPESPEC,
3416 /* RID_VOID */ TYPESPEC,
3417 /* RID_ENUM */ ENUM,
3418 /* RID_STRUCT */ STRUCT,
3419 /* RID_UNION */ UNION,
3421 /* RID_ELSE */ ELSE,
3422 /* RID_WHILE */ WHILE,
3425 /* RID_SWITCH */ SWITCH,
3426 /* RID_CASE */ CASE,
3427 /* RID_DEFAULT */ DEFAULT,
3428 /* RID_BREAK */ BREAK,
3429 /* RID_CONTINUE */ CONTINUE,
3430 /* RID_RETURN */ RETURN,
3431 /* RID_GOTO */ GOTO,
3432 /* RID_SIZEOF */ SIZEOF,
3435 /* RID_ASM */ ASM_KEYWORD,
3436 /* RID_TYPEOF */ TYPEOF,
3437 /* RID_ALIGNOF */ ALIGNOF,
3438 /* RID_ATTRIBUTE */ ATTRIBUTE,
3439 /* RID_VA_ARG */ VA_ARG,
3440 /* RID_EXTENSION */ EXTENSION,
3441 /* RID_IMAGPART */ IMAGPART,
3442 /* RID_REALPART */ REALPART,
3443 /* RID_LABEL */ LABEL,
3444 /* RID_PTRBASE */ PTR_BASE,
3445 /* RID_PTREXTENT */ PTR_EXTENT,
3446 /* RID_PTRVALUE */ PTR_VALUE,
3448 /* RID_FUNCTION_NAME */ STRING_FUNC_NAME,
3449 /* RID_PRETTY_FUNCTION_NAME */ STRING_FUNC_NAME,
3450 /* RID_C99_FUNCTION_NAME */ VAR_FUNC_NAME,
3453 /* RID_BOOL */ TYPESPEC,
3457 /* RID_PRIVATE */ 0,
3458 /* RID_PROTECTED */ 0,
3459 /* RID_TEMPLATE */ 0,
3464 /* RID_NAMESPACE */ 0,
3466 /* RID_OPERATOR */ 0,
3471 /* RID_TYPENAME */ 0,
3476 /* RID_CONSTCAST */ 0,
3477 /* RID_DYNCAST */ 0,
3478 /* RID_REINTCAST */ 0,
3479 /* RID_STATCAST */ 0,
3481 /* alternate spellings */
3495 /* RID_ID */ OBJECTNAME,
3496 /* RID_AT_ENCODE */ ENCODE,
3497 /* RID_AT_END */ END,
3498 /* RID_AT_CLASS */ CLASS,
3499 /* RID_AT_ALIAS */ ALIAS,
3500 /* RID_AT_DEFS */ DEFS,
3501 /* RID_AT_PRIVATE */ PRIVATE,
3502 /* RID_AT_PROTECTED */ PROTECTED,
3503 /* RID_AT_PUBLIC */ PUBLIC,
3504 /* RID_AT_PROTOCOL */ PROTOCOL,
3505 /* RID_AT_SELECTOR */ SELECTOR,
3506 /* RID_AT_INTERFACE */ INTERFACE,
3507 /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
3515 int mask = (flag_isoc99 ? 0 : D_C89)
3516 | (flag_traditional ? D_TRAD : 0)
3517 | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
3519 if (c_language != clk_objective_c)
3522 /* It is not necessary to register ridpointers as a GC root, because
3523 all the trees it points to are permanently interned in the
3524 get_identifier hash anyway. */
3525 ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
3526 for (i = 0; i < N_reswords; i++)
3528 /* If a keyword is disabled, do not enter it into the table
3529 and so create a canonical spelling that isn't a keyword. */
3530 if (reswords[i].disable & mask)
3533 id = get_identifier (reswords[i].word);
3534 C_RID_CODE (id) = reswords[i].rid;
3535 C_IS_RESERVED_WORD (id) = 1;
3536 ridpointers [(int) reswords[i].rid] = id;
3541 init_parse (filename)
3542 const char *filename;
3544 add_c_tree_codes ();
3546 /* Make identifier nodes long enough for the language-specific slots. */
3547 set_identifier_size (sizeof (struct lang_identifier));
3552 return init_c_lex (filename);
3558 cpp_finish (parse_in);
3559 /* Call to cpp_destroy () omitted for performance reasons. */
3560 errorcount += cpp_errors (parse_in);
3563 #define NAME(type) cpp_type2name (type)
3569 const char *string = _(msgid);
3571 if (last_token == CPP_EOF)
3572 error ("%s at end of input", string);
3573 else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
3575 unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
3576 const char *const ell = (last_token == CPP_CHAR) ? "" : "L";
3577 if (val <= UCHAR_MAX && ISGRAPH (val))
3578 error ("%s before %s'%c'", string, ell, val);
3580 error ("%s before %s'\\x%x'", string, ell, val);
3582 else if (last_token == CPP_STRING
3583 || last_token == CPP_WSTRING)
3584 error ("%s before string constant", string);
3585 else if (last_token == CPP_NUMBER)
3586 error ("%s before numeric constant", string);
3587 else if (last_token == CPP_NAME)
3588 error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
3590 error ("%s before '%s' token", string, NAME(last_token));
3599 int objc_force_identifier = objc_need_raw_identifier;
3600 OBJC_NEED_RAW_IDENTIFIER (0);
3603 if (C_IS_RESERVED_WORD (yylval.ttype))
3605 enum rid rid_code = C_RID_CODE (yylval.ttype);
3608 /* Turn non-typedefed refs to "id" into plain identifiers; this
3609 allows constructs like "void foo(id id);" to work. */
3610 if (rid_code == RID_ID)
3612 decl = lookup_name (yylval.ttype);
3613 if (decl == NULL_TREE || TREE_CODE (decl) != TYPE_DECL)
3617 if (!OBJC_IS_AT_KEYWORD (rid_code)
3618 && (!OBJC_IS_PQ_KEYWORD (rid_code) || objc_pq_context))
3621 int yycode = rid_to_yy[(int) rid_code];
3622 if (yycode == STRING_FUNC_NAME)
3624 /* __FUNCTION__ and __PRETTY_FUNCTION__ get converted
3625 to string constants. */
3626 const char *name = fname_string (rid_code);
3628 yylval.ttype = build_string (strlen (name) + 1, name);
3629 last_token = CPP_STRING; /* so yyerror won't choke */
3633 /* Return the canonical spelling for this keyword. */
3634 yylval.ttype = ridpointers[(int) rid_code];
3639 decl = lookup_name (yylval.ttype);
3642 if (TREE_CODE (decl) == TYPE_DECL)
3648 tree objc_interface_decl = is_class_name (yylval.ttype);
3649 /* ObjC class names are in the same namespace as variables and
3650 typedefs, and hence are shadowed by local declarations. */
3651 if (objc_interface_decl
3652 && (global_bindings_p ()
3653 || (!objc_force_identifier && !decl)))
3655 yylval.ttype = objc_interface_decl;
3669 last_token = c_lex (&yylval.ttype);
3672 case CPP_EQ: return '=';
3673 case CPP_NOT: return '!';
3674 case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
3675 case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
3676 case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
3677 case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
3678 case CPP_MULT: yylval.code = MULT_EXPR; return '*';
3679 case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
3680 case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
3681 case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
3682 case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
3683 case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
3684 case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
3685 case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
3687 case CPP_COMPL: return '~';
3688 case CPP_AND_AND: return ANDAND;
3689 case CPP_OR_OR: return OROR;
3690 case CPP_QUERY: return '?';
3691 case CPP_OPEN_PAREN: return '(';
3692 case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
3693 case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
3694 case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
3695 case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
3697 case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
3698 case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
3699 case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
3700 case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
3701 case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
3702 case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
3703 case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
3704 case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
3705 case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
3706 case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
3708 case CPP_OPEN_SQUARE: return '[';
3709 case CPP_CLOSE_SQUARE: return ']';
3710 case CPP_OPEN_BRACE: return '{';
3711 case CPP_CLOSE_BRACE: return '}';
3712 case CPP_ELLIPSIS: return ELLIPSIS;
3714 case CPP_PLUS_PLUS: return PLUSPLUS;
3715 case CPP_MINUS_MINUS: return MINUSMINUS;
3716 case CPP_DEREF: return POINTSAT;
3717 case CPP_DOT: return '.';
3719 /* The following tokens may affect the interpretation of any
3720 identifiers following, if doing Objective-C. */
3721 case CPP_COLON: OBJC_NEED_RAW_IDENTIFIER (0); return ':';
3722 case CPP_COMMA: OBJC_NEED_RAW_IDENTIFIER (0); return ',';
3723 case CPP_CLOSE_PAREN: OBJC_NEED_RAW_IDENTIFIER (0); return ')';
3724 case CPP_SEMICOLON: OBJC_NEED_RAW_IDENTIFIER (0); return ';';
3730 return yylexname ();
3741 /* This token is Objective-C specific. It gives the next token
3742 special significance. */
3747 enum cpp_ttype after_at_type;
3749 after_at_type = c_lex (&after_at);
3751 if (after_at_type == CPP_NAME
3752 && C_IS_RESERVED_WORD (after_at)
3753 && OBJC_IS_AT_KEYWORD (C_RID_CODE (after_at)))
3755 yylval.ttype = after_at;
3756 last_token = after_at_type;
3757 return rid_to_yy [(int) C_RID_CODE (after_at)];
3759 _cpp_backup_tokens (parse_in, 1);
3764 /* These tokens are C++ specific (and will not be generated
3765 in C mode, but let's be cautious). */
3767 case CPP_DEREF_STAR:
3773 /* These tokens should not survive translation phase 4. */
3776 error ("syntax error at '%s' token", NAME(last_token));
3789 timevar_push (TV_LEX);
3791 timevar_pop (TV_LEX);
3795 /* Sets the value of the 'yydebug' variable to VALUE.
3796 This is a function so we don't have to have YYDEBUG defined
3797 in order to build the compiler. */
3806 warning ("YYDEBUG not defined.");
3810 /* Function used when yydebug is set, to print a token in more detail. */
3813 yyprint (file, yychar, yyl)
3820 fprintf (file, " [%s]", NAME(last_token));
3830 if (IDENTIFIER_POINTER (t))
3831 fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
3835 fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
3836 if (TREE_CODE (t) == INTEGER_CST)
3838 #if HOST_BITS_PER_WIDE_INT == 64
3839 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
3842 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
3849 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
3855 TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
3860 /* This is not the ideal place to put these, but we have to get them out
3861 of c-lex.c because cp/lex.c has its own versions. */
3863 /* Return something to represent absolute declarators containing a *.
3864 TARGET is the absolute declarator that the * contains.
3865 TYPE_QUALS_ATTRS is a list of modifiers such as const or volatile
3866 to apply to the pointer type, represented as identifiers, possible mixed
3869 We return an INDIRECT_REF whose "contents" are TARGET (inside a TREE_LIST,
3870 if attributes are present) and whose type is the modifier list. */
3873 make_pointer_declarator (type_quals_attrs, target)
3874 tree type_quals_attrs, target;
3877 tree itarget = target;
3878 split_specs_attrs (type_quals_attrs, &quals, &attrs);
3879 if (attrs != NULL_TREE)
3880 itarget = tree_cons (attrs, target, NULL_TREE);
3881 return build1 (INDIRECT_REF, quals, itarget);