1 /* Process declarations and variables for C compiler.
2 Copyright (C) 1988, 92-97, 1998 Free Software Foundation, Inc.
3 Contributed by Michael Tiemann (tiemann@cygnus.com)
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
23 /* Process declarations and symbol lookup for C front end.
24 Also constructs types; the standard scalar types at initialization,
25 and structure, union, array and enum types when they are declared. */
27 /* ??? not all decl nodes are given the most useful possible
28 line numbers. For example, the CONST_DECLs for enum values. */
44 #define obstack_chunk_alloc xmalloc
45 #define obstack_chunk_free free
47 extern tree builtin_return_address_fndecl;
49 extern struct obstack permanent_obstack;
51 extern int current_class_depth;
53 extern tree static_ctors, static_dtors;
55 extern int static_labelno;
57 extern tree current_namespace;
58 extern tree global_namespace;
60 /* Stack of places to restore the search obstack back to. */
62 /* Obstack used for remembering local class declarations (like
63 enums and static (const) members. */
65 struct obstack decl_obstack;
66 static struct stack_level *decl_stack;
68 #ifndef CHAR_TYPE_SIZE
69 #define CHAR_TYPE_SIZE BITS_PER_UNIT
72 #ifndef SHORT_TYPE_SIZE
73 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
77 #define INT_TYPE_SIZE BITS_PER_WORD
80 #ifndef LONG_TYPE_SIZE
81 #define LONG_TYPE_SIZE BITS_PER_WORD
84 #ifndef LONG_LONG_TYPE_SIZE
85 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
88 #ifndef WCHAR_UNSIGNED
89 #define WCHAR_UNSIGNED 0
92 #ifndef FLOAT_TYPE_SIZE
93 #define FLOAT_TYPE_SIZE BITS_PER_WORD
96 #ifndef DOUBLE_TYPE_SIZE
97 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
100 #ifndef LONG_DOUBLE_TYPE_SIZE
101 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
104 #ifndef BOOL_TYPE_SIZE
105 #ifdef SLOW_BYTE_ACCESS
106 #define BOOL_TYPE_SIZE ((SLOW_BYTE_ACCESS) ? (POINTER_SIZE) : (CHAR_TYPE_SIZE))
108 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
112 /* We let tm.h override the types used here, to handle trivial differences
113 such as the choice of unsigned int or long unsigned int for size_t.
114 When machines start needing nontrivial differences in the size type,
115 it would be best to do something here to figure out automatically
116 from other information what type to use. */
119 #define SIZE_TYPE "long unsigned int"
123 #define PTRDIFF_TYPE "long int"
127 #define WCHAR_TYPE "int"
130 static tree grokparms PROTO((tree, int));
131 static tree lookup_nested_type PROTO((tree, tree));
132 static char *redeclaration_error_message PROTO((tree, tree));
133 static tree push_overloaded_decl PROTO((tree, int));
134 static void push_overloaded_decl_top_level PROTO((tree, int));
136 static struct stack_level *push_decl_level PROTO((struct stack_level *,
138 static void push_binding_level PROTO((struct binding_level *, int,
140 static void pop_binding_level PROTO((void));
141 static void suspend_binding_level PROTO((void));
142 static void resume_binding_level PROTO((struct binding_level *));
143 static struct binding_level *make_binding_level PROTO((void));
144 static int namespace_bindings_p PROTO((void));
145 static void declare_namespace_level PROTO((void));
146 static tree get_unique_name PROTO((void));
147 static void signal_catch PROTO((int));
148 static void storedecls PROTO((tree));
149 static void storetags PROTO((tree));
150 static void require_complete_types_for_parms PROTO((tree));
151 static void push_overloaded_decl_1 PROTO((tree));
152 static int ambi_op_p PROTO((tree));
153 static int unary_op_p PROTO((tree));
154 static tree store_bindings PROTO((tree, tree));
155 static tree lookup_tag_reverse PROTO((tree, tree));
156 static tree obscure_complex_init PROTO((tree, tree));
157 static tree maybe_build_cleanup_1 PROTO((tree, tree));
158 static tree lookup_name_real PROTO((tree, int, int));
159 static void warn_extern_redeclared_static PROTO((tree, tree));
160 static void grok_reference_init PROTO((tree, tree, tree));
161 static tree grokfndecl PROTO((tree, tree, tree, tree, int,
163 tree, tree, tree, int, int, int, int, int, int));
164 static tree grokvardecl PROTO((tree, tree, RID_BIT_TYPE *, int, int));
165 static tree lookup_tag PROTO((enum tree_code, tree,
166 struct binding_level *, int));
167 static void set_identifier_type_value_with_scope
168 PROTO((tree, tree, struct binding_level *));
169 static void record_builtin_type PROTO((enum rid, char *, tree));
170 static int member_function_or_else PROTO((tree, tree, char *));
171 static void bad_specifiers PROTO((tree, char *, int, int, int, int,
174 #if defined (DEBUG_CP_BINDING_LEVELS)
175 static void indent PROTO((void));
178 /* a node which has tree code ERROR_MARK, and whose type is itself.
179 All erroneous expressions are replaced with this node. All functions
180 that accept nodes as arguments should avoid generating error messages
181 if this node is one of the arguments, since it is undesirable to get
182 multiple error messages from one error in the input. */
184 tree error_mark_node;
186 /* Erroneous argument lists can use this *IFF* they do not modify it. */
187 tree error_mark_list;
189 /* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */
191 tree short_integer_type_node;
192 tree integer_type_node;
193 tree long_integer_type_node;
194 tree long_long_integer_type_node;
196 tree short_unsigned_type_node;
197 tree unsigned_type_node;
198 tree long_unsigned_type_node;
199 tree long_long_unsigned_type_node;
201 tree ptrdiff_type_node;
203 tree unsigned_char_type_node;
204 tree signed_char_type_node;
206 tree wchar_type_node;
207 tree signed_wchar_type_node;
208 tree unsigned_wchar_type_node;
210 tree wchar_decl_node;
212 tree float_type_node;
213 tree double_type_node;
214 tree long_double_type_node;
216 tree complex_integer_type_node;
217 tree complex_float_type_node;
218 tree complex_double_type_node;
219 tree complex_long_double_type_node;
221 tree intQI_type_node;
222 tree intHI_type_node;
223 tree intSI_type_node;
224 tree intDI_type_node;
225 tree intTI_type_node;
227 tree unsigned_intQI_type_node;
228 tree unsigned_intHI_type_node;
229 tree unsigned_intSI_type_node;
230 tree unsigned_intDI_type_node;
231 tree unsigned_intTI_type_node;
233 /* a VOID_TYPE node, and the same, packaged in a TREE_LIST. */
235 tree void_type_node, void_list_node;
238 /* Nodes for types `void *' and `const void *'. */
241 tree const_ptr_type_node;
243 /* Nodes for types `char *' and `const char *'. */
245 tree string_type_node, const_string_type_node;
247 /* Type `char[256]' or something like it.
248 Used when an array of char is needed and the size is irrelevant. */
250 tree char_array_type_node;
252 /* Type `int[256]' or something like it.
253 Used when an array of int needed and the size is irrelevant. */
255 tree int_array_type_node;
257 /* Type `wchar_t[256]' or something like it.
258 Used when a wide string literal is created. */
260 tree wchar_array_type_node;
262 /* The bool data type, and constants */
263 tree boolean_type_node, boolean_true_node, boolean_false_node;
265 /* type `int ()' -- used for implicit declaration of functions. */
267 tree default_function_type;
269 /* function types `double (double)' and `double (double, double)', etc. */
271 static tree double_ftype_double, double_ftype_double_double;
272 static tree int_ftype_int, long_ftype_long;
273 static tree float_ftype_float;
274 static tree ldouble_ftype_ldouble;
276 /* Function type `int (const void *, const void *, size_t)' */
277 static tree int_ftype_cptr_cptr_sizet;
280 tree vtable_entry_type;
281 tree delta_type_node;
283 /* Old rtti stuff. */
284 tree __baselist_desc_type_node;
285 tree __i_desc_type_node, __m_desc_type_node;
286 tree __t_desc_array_type, __i_desc_array_type, __m_desc_array_type;
288 tree __t_desc_type_node;
290 tree __tp_desc_type_node;
292 tree __access_mode_type_node;
293 tree __bltn_desc_type_node, __user_desc_type_node, __class_desc_type_node;
294 tree __ptr_desc_type_node, __attr_desc_type_node, __func_desc_type_node;
295 tree __ptmf_desc_type_node, __ptmd_desc_type_node;
297 /* Not needed yet? May be needed one day? */
298 tree __bltn_desc_array_type, __user_desc_array_type, __class_desc_array_type;
299 tree __ptr_desc_array_type, __attr_dec_array_type, __func_desc_array_type;
300 tree __ptmf_desc_array_type, __ptmd_desc_array_type;
303 tree class_star_type_node;
304 tree class_type_node, record_type_node, union_type_node, enum_type_node;
305 tree unknown_type_node;
306 tree opaque_type_node, signature_type_node;
307 tree sigtable_entry_type;
309 /* Array type `vtable_entry_type[]' */
315 /* In a destructor, the point at which all derived class destroying
316 has been done, just before any base class destroying will be done. */
320 /* In a destructor, the last insn emitted after the start of the
321 function and the parms. */
323 static rtx last_dtor_insn;
325 /* In a constructor, the last insn emitted after the start of the
326 function and the parms, the exception specification and any
327 function-try-block. The constructor initializers are emitted after
330 static rtx last_parm_cleanup_insn;
332 /* In a constructor, the point at which we are ready to return
333 the pointer to the initialized object. */
337 /* A FUNCTION_DECL which can call `abort'. Not necessarily the
338 one that the user will declare, but sufficient to be called
339 by routines that want to abort the program. */
343 extern rtx cleanup_label, return_label;
345 /* If original DECL_RESULT of current function was a register,
346 but due to being an addressable named return value, would up
347 on the stack, this variable holds the named return value's
348 original location. */
349 static rtx original_result_rtx;
351 /* Sequence of insns which represents base initialization. */
354 /* C++: Keep these around to reduce calls to `get_identifier'.
355 Identifiers for `this' in member functions and the auto-delete
356 parameter for destructors. */
357 tree this_identifier, in_charge_identifier;
358 tree ctor_identifier, dtor_identifier;
359 /* Used in pointer to member functions, in vtables, and in sigtables. */
360 tree pfn_identifier, index_identifier, delta_identifier, delta2_identifier;
361 tree pfn_or_delta2_identifier, tag_identifier;
362 tree vt_off_identifier;
364 struct named_label_list
366 struct binding_level *binding_level;
369 char *filename_o_goto;
371 struct named_label_list *next;
374 /* A list (chain of TREE_LIST nodes) of named label uses.
375 The TREE_PURPOSE field is the list of variables defined
376 the the label's scope defined at the point of use.
377 The TREE_VALUE field is the LABEL_DECL used.
378 The TREE_TYPE field holds `current_binding_level' at the
379 point of the label's use.
381 BWAHAHAAHAHahhahahahaah. No, no, no, said the little chicken.
383 Look at the pretty struct named_label_list. See the pretty struct
384 with the pretty named fields that describe what they do. See the
385 pretty lack of gratuitous casts. Notice the code got a lot cleaner.
387 Used only for jumps to as-yet undefined labels, since
388 jumps to defined labels can have their validity checked
391 static struct named_label_list *named_label_uses = NULL;
393 /* A list of objects which have constructors or destructors
394 which reside in the global scope. The decl is stored in
395 the TREE_VALUE slot and the initializer is stored
396 in the TREE_PURPOSE slot. */
397 tree static_aggregates;
401 /* Two expressions that are constants with value zero.
402 The first is of type `int', the second of type `void *'. */
404 tree integer_zero_node;
405 tree null_pointer_node;
407 /* The value for __null (NULL), either of type `void *' or, with -ansi,
408 an integer type of the same size. */
412 /* A node for the integer constants 1, 2, and 3. */
414 tree integer_one_node, integer_two_node, integer_three_node;
416 /* While defining an enum type, this is 1 plus the last enumerator
419 static tree enum_next_value;
421 /* Nonzero means that there was overflow computing enum_next_value. */
423 static int enum_overflow;
425 /* Parsing a function declarator leaves a list of parameter names
426 or a chain or parameter decls here. */
428 tree last_function_parms;
430 /* Parsing a function declarator leaves here a chain of structure
431 and enum types declared in the parmlist. */
433 static tree last_function_parm_tags;
435 /* After parsing the declarator that starts a function definition,
436 `start_function' puts here the list of parameter names or chain of decls.
437 `store_parm_decls' finds it here. */
439 static tree current_function_parms;
441 /* Similar, for last_function_parm_tags. */
442 static tree current_function_parm_tags;
444 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
445 that have names. Here so we can clear out their names' definitions
446 at the end of the function. */
448 static tree named_labels;
450 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
452 static tree shadowed_labels;
454 /* The FUNCTION_DECL for the function currently being compiled,
455 or 0 if between functions. */
456 tree current_function_decl;
458 /* Set to 0 at beginning of a function definition, set to 1 if
459 a return statement that specifies a return value is seen. */
461 int current_function_returns_value;
463 /* Set to 0 at beginning of a function definition, set to 1 if
464 a return statement with no argument is seen. */
466 int current_function_returns_null;
468 /* Set to 0 at beginning of a function definition, and whenever
469 a label (case or named) is defined. Set to value of expression
470 returned from function when that value can be transformed into
471 a named return value. */
473 tree current_function_return_value;
475 /* Set to nonzero by `grokdeclarator' for a function
476 whose return type is defaulted, if warnings for this are desired. */
478 static int warn_about_return_type;
480 /* Nonzero means give `double' the same size as `float'. */
482 extern int flag_short_double;
484 /* Nonzero means don't recognize any builtin functions. */
486 extern int flag_no_builtin;
488 /* Nonzero means don't recognize the non-ANSI builtin functions.
491 extern int flag_no_nonansi_builtin;
493 /* Nonzero means enable obscure ANSI features and disable GNU extensions
494 that might cause ANSI-compliant code to be miscompiled. */
496 extern int flag_ansi;
498 /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes)
500 extern int flag_huge_objects;
502 /* Nonzero if we want to conserve space in the .o files. We do this
503 by putting uninitialized data and runtime initialized data into
504 .common instead of .data at the expense of not flagging multiple
506 extern int flag_conserve_space;
508 /* Pointers to the base and current top of the language name stack. */
510 extern tree *current_lang_base, *current_lang_stack;
512 /* C and C++ flags are in decl2.c. */
514 /* Set to 0 at beginning of a constructor, set to 1
515 if that function does an allocation before referencing its
516 instance variable. */
517 static int current_function_assigns_this;
518 int current_function_just_assigned_this;
520 /* Set to 0 at beginning of a function. Set non-zero when
521 store_parm_decls is called. Don't call store_parm_decls
522 if this flag is non-zero! */
523 int current_function_parms_stored;
525 /* Flag used when debugging spew.c */
527 extern int spew_debug;
529 /* This is a copy of the class_shadowed list of the previous class binding
530 contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs
531 when entering another class scope (i.e. a cache miss). */
532 extern tree previous_class_values;
534 /* A expression of value 0 with the same precision as a sizetype
536 tree signed_size_zero_node;
539 /* Allocate a level of searching. */
543 push_decl_level (stack, obstack)
544 struct stack_level *stack;
545 struct obstack *obstack;
547 struct stack_level tem;
550 return push_stack_level (obstack, (char *)&tem, sizeof (tem));
553 /* For each binding contour we allocate a binding_level structure
554 which records the names defined in that contour.
557 1) one for each function definition,
558 where internal declarations of the parameters appear.
559 2) one for each compound statement,
560 to record its declarations.
562 The current meaning of a name can be found by searching the levels
563 from the current one out to the global one.
565 Off to the side, may be the class_binding_level. This exists only
566 to catch class-local declarations. It is otherwise nonexistent.
568 Also there may be binding levels that catch cleanups that must be
569 run when exceptions occur. */
571 /* Note that the information in the `names' component of the global contour
572 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
576 /* A chain of _DECL nodes for all variables, constants, functions,
577 and typedef types. These are in the reverse of the order
581 /* A list of structure, union and enum definitions, for looking up
583 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
584 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
585 or ENUMERAL_TYPE node.
587 C++: the TREE_VALUE nodes can be simple types for
588 component_bindings. */
591 /* For each level, a list of shadowed outer-level local definitions
592 to be restored when this level is popped.
593 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
594 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
597 /* Same, for IDENTIFIER_CLASS_VALUE. */
600 /* Same, for IDENTIFIER_TYPE_VALUE. */
603 /* For each level (except not the global one),
604 a chain of BLOCK nodes for all the levels
605 that were entered and exited one level down. */
608 /* The BLOCK node for this level, if one has been preallocated.
609 If 0, the BLOCK is allocated (if needed) when the level is popped. */
612 /* The binding level which this one is contained in (inherits from). */
613 struct binding_level *level_chain;
615 /* List of decls in `names' that have incomplete
616 structure or union types. */
619 /* List of VAR_DECLS saved from a previous for statement.
620 These would be dead in ANSI-conforming code, but might
621 be referenced in ARM-era code. */
622 tree dead_vars_from_for;
624 /* 1 for the level that holds the parameters of a function.
625 2 for the level that holds a class declaration.
626 3 for levels that hold parameter declarations. */
627 unsigned parm_flag : 4;
629 /* 1 means make a BLOCK for this level regardless of all else.
630 2 for temporary binding contours created by the compiler. */
633 /* Nonzero if this level "doesn't exist" for tags. */
634 unsigned tag_transparent : 1;
636 /* Nonzero if this level can safely have additional
637 cleanup-needing variables added to it. */
638 unsigned more_cleanups_ok : 1;
639 unsigned have_cleanups : 1;
641 /* Nonzero if this level is for storing the decls for template
642 parameters and generic decls; these decls will be discarded and
643 replaced with a TEMPLATE_DECL. */
644 unsigned pseudo_global : 1;
646 /* This is set for a namespace binding level. */
647 unsigned namespace_p : 1;
649 /* True if this level is that of a for-statement where we need to
650 worry about ambiguous (ARM or ANSI) scope rules. */
651 unsigned is_for_scope : 1;
653 /* Two bits left for this word. */
655 #if defined(DEBUG_CP_BINDING_LEVELS)
656 /* Binding depth at which this level began. */
657 unsigned binding_depth;
658 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
661 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
663 /* The (non-class) binding level currently in effect. */
665 static struct binding_level *current_binding_level;
667 /* The binding level of the current class, if any. */
669 static struct binding_level *class_binding_level;
671 /* The current (class or non-class) binding level currently in effect. */
673 #define inner_binding_level \
674 (class_binding_level ? class_binding_level : current_binding_level)
676 /* A chain of binding_level structures awaiting reuse. */
678 static struct binding_level *free_binding_level;
680 /* The outermost binding level, for names of file scope.
681 This is created when the compiler is started and exists
682 through the entire run. */
684 static struct binding_level *global_binding_level;
686 /* Binding level structures are initialized by copying this one. */
688 static struct binding_level clear_binding_level;
690 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
692 static int keep_next_level_flag;
694 #if defined(DEBUG_CP_BINDING_LEVELS)
695 static int binding_depth = 0;
696 static int is_class_level = 0;
703 for (i = 0; i < binding_depth*2; i++)
706 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
708 static tree pushdecl_with_scope PROTO((tree, struct binding_level *));
711 push_binding_level (newlevel, tag_transparent, keep)
712 struct binding_level *newlevel;
713 int tag_transparent, keep;
715 /* Add this level to the front of the chain (stack) of levels that
717 *newlevel = clear_binding_level;
718 if (class_binding_level)
720 newlevel->level_chain = class_binding_level;
721 class_binding_level = (struct binding_level *)0;
725 newlevel->level_chain = current_binding_level;
727 current_binding_level = newlevel;
728 newlevel->tag_transparent = tag_transparent;
729 newlevel->more_cleanups_ok = 1;
730 newlevel->keep = keep;
731 #if defined(DEBUG_CP_BINDING_LEVELS)
732 newlevel->binding_depth = binding_depth;
734 fprintf (stderr, "push %s level 0x%08x line %d\n",
735 (is_class_level) ? "class" : "block", newlevel, lineno);
738 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
744 if (class_binding_level)
745 current_binding_level = class_binding_level;
747 if (global_binding_level)
749 /* cannot pop a level, if there are none left to pop. */
750 if (current_binding_level == global_binding_level)
751 my_friendly_abort (123);
753 /* Pop the current level, and free the structure for reuse. */
754 #if defined(DEBUG_CP_BINDING_LEVELS)
757 fprintf (stderr, "pop %s level 0x%08x line %d\n",
758 (is_class_level) ? "class" : "block",
759 current_binding_level, lineno);
760 if (is_class_level != (current_binding_level == class_binding_level))
763 fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
766 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
768 register struct binding_level *level = current_binding_level;
769 current_binding_level = current_binding_level->level_chain;
770 level->level_chain = free_binding_level;
771 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
772 if (level->binding_depth != binding_depth)
774 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
775 free_binding_level = level;
777 class_binding_level = current_binding_level;
778 if (class_binding_level->parm_flag != 2)
779 class_binding_level = 0;
780 while (current_binding_level->parm_flag == 2)
781 current_binding_level = current_binding_level->level_chain;
786 suspend_binding_level ()
788 if (class_binding_level)
789 current_binding_level = class_binding_level;
791 if (global_binding_level)
793 /* cannot suspend a level, if there are none left to suspend. */
794 if (current_binding_level == global_binding_level)
795 my_friendly_abort (123);
797 /* Suspend the current level. */
798 #if defined(DEBUG_CP_BINDING_LEVELS)
801 fprintf (stderr, "suspend %s level 0x%08x line %d\n",
802 (is_class_level) ? "class" : "block",
803 current_binding_level, lineno);
804 if (is_class_level != (current_binding_level == class_binding_level))
807 fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
810 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
812 current_binding_level = current_binding_level->level_chain;
813 class_binding_level = current_binding_level;
814 if (class_binding_level->parm_flag != 2)
815 class_binding_level = 0;
816 while (current_binding_level->parm_flag == 2)
817 current_binding_level = current_binding_level->level_chain;
822 resume_binding_level (b)
823 struct binding_level *b;
825 if (class_binding_level)
828 /* These are here because we cannot deal with shadows yet. */
829 sorry ("cannot resume a namespace inside class");
832 b->level_chain = class_binding_level;
833 class_binding_level = (struct binding_level *)0;
839 /* These are here because we cannot deal with shadows yet. */
840 if (b->level_chain != current_binding_level)
842 sorry ("cannot resume a namespace inside a different namespace");
846 b->level_chain = current_binding_level;
848 current_binding_level = b;
849 #if defined(DEBUG_CP_BINDING_LEVELS)
850 b->binding_depth = binding_depth;
852 fprintf (stderr, "resume %s level 0x%08x line %d\n",
853 (is_class_level) ? "class" : "block", b, lineno);
856 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
859 /* Create a new `struct binding_level'. */
862 struct binding_level *
863 make_binding_level ()
866 return (struct binding_level *) xmalloc (sizeof (struct binding_level));
869 /* Nonzero if we are currently in the global binding level. */
874 return current_binding_level == global_binding_level;
877 /* Nonzero if we are currently in a toplevel binding level. This
878 means either the global binding level or a namespace in a toplevel
882 toplevel_bindings_p ()
884 struct binding_level *b = current_binding_level;
888 if (b == global_binding_level)
890 if (b->pseudo_global)
892 if (! b->namespace_p)
898 /* Nonzero if this is a namespace scope. */
901 namespace_bindings_p ()
903 return current_binding_level->namespace_p;
909 keep_next_level_flag = 1;
912 /* Nonzero if the current level needs to have a BLOCK made. */
917 return (current_binding_level->blocks != NULL_TREE
918 || current_binding_level->keep
919 || current_binding_level->names != NULL_TREE
920 || (current_binding_level->tags != NULL_TREE
921 && !current_binding_level->tag_transparent));
924 /* Identify this binding level as a level of parameters. */
927 declare_parm_level ()
929 current_binding_level->parm_flag = 1;
933 declare_pseudo_global_level ()
935 current_binding_level->pseudo_global = 1;
939 declare_namespace_level ()
941 current_binding_level->namespace_p = 1;
945 pseudo_global_level_p ()
947 return current_binding_level->pseudo_global;
951 set_class_shadows (shadows)
954 class_binding_level->class_shadowed = shadows;
957 /* Enter a new binding level.
958 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
959 not for that of tags. */
962 pushlevel (tag_transparent)
965 register struct binding_level *newlevel = NULL_BINDING_LEVEL;
967 /* If this is the top level of a function,
968 just make sure that NAMED_LABELS is 0.
969 They should have been set to 0 at the end of the previous function. */
971 if (current_binding_level == global_binding_level)
972 my_friendly_assert (named_labels == NULL_TREE, 134);
974 /* Reuse or create a struct for this binding level. */
976 #if defined(DEBUG_CP_BINDING_LEVELS)
978 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
979 if (free_binding_level)
980 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
982 newlevel = free_binding_level;
983 free_binding_level = free_binding_level->level_chain;
987 newlevel = make_binding_level ();
990 push_binding_level (newlevel, tag_transparent, keep_next_level_flag);
991 GNU_xref_start_scope ((HOST_WIDE_INT) newlevel);
992 keep_next_level_flag = 0;
996 note_level_for_for ()
998 current_binding_level->is_for_scope = 1;
1002 pushlevel_temporary (tag_transparent)
1003 int tag_transparent;
1005 pushlevel (tag_transparent);
1006 current_binding_level->keep = 2;
1009 /* Note we don't call push_momentary() here. Otherwise, it would cause
1010 cleanups to be allocated on the momentary obstack, and they will be
1011 overwritten by the next statement. */
1013 expand_start_bindings (0);
1016 /* Exit a binding level.
1017 Pop the level off, and restore the state of the identifier-decl mappings
1018 that were in effect when this level was entered.
1020 If KEEP == 1, this level had explicit declarations, so
1021 and create a "block" (a BLOCK node) for the level
1022 to record its declarations and subblocks for symbol table output.
1024 If KEEP == 2, this level's subblocks go to the front,
1025 not the back of the current binding level. This happens,
1026 for instance, when code for constructors and destructors
1027 need to generate code at the end of a function which must
1028 be moved up to the front of the function.
1030 If FUNCTIONBODY is nonzero, this level is the body of a function,
1031 so create a block as if KEEP were set and also clear out all
1034 If REVERSE is nonzero, reverse the order of decls before putting
1035 them into the BLOCK. */
1038 poplevel (keep, reverse, functionbody)
1044 /* The chain of decls was accumulated in reverse order.
1045 Put it into forward order, just for cleanliness. */
1047 int tmp = functionbody;
1048 int real_functionbody = current_binding_level->keep == 2
1049 ? ((functionbody = 0), tmp) : functionbody;
1050 tree tags = functionbody >= 0 ? current_binding_level->tags : 0;
1051 tree subblocks = functionbody >= 0 ? current_binding_level->blocks : 0;
1052 tree block = NULL_TREE;
1054 int block_previously_created;
1056 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
1057 (HOST_WIDE_INT) current_binding_level->level_chain,
1058 current_binding_level->parm_flag,
1059 current_binding_level->keep);
1061 if (current_binding_level->keep == 1)
1064 /* Get the decls in the order they were written.
1065 Usually current_binding_level->names is in reverse order.
1066 But parameter decls were previously put in forward order. */
1069 current_binding_level->names
1070 = decls = nreverse (current_binding_level->names);
1072 decls = current_binding_level->names;
1074 /* Output any nested inline functions within this block
1075 if they weren't already output. */
1077 for (decl = decls; decl; decl = TREE_CHAIN (decl))
1078 if (TREE_CODE (decl) == FUNCTION_DECL
1079 && ! TREE_ASM_WRITTEN (decl)
1080 && DECL_INITIAL (decl) != NULL_TREE
1081 && TREE_ADDRESSABLE (decl)
1082 && decl_function_context (decl) == current_function_decl)
1084 /* If this decl was copied from a file-scope decl
1085 on account of a block-scope extern decl,
1086 propagate TREE_ADDRESSABLE to the file-scope decl. */
1087 if (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE)
1088 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1;
1091 push_function_context ();
1092 output_inline_function (decl);
1093 pop_function_context ();
1097 /* If there were any declarations or structure tags in that level,
1098 or if this level is a function body,
1099 create a BLOCK to record them for the life of this function. */
1102 block_previously_created = (current_binding_level->this_block != NULL_TREE);
1103 if (block_previously_created)
1104 block = current_binding_level->this_block;
1105 else if (keep == 1 || functionbody)
1106 block = make_node (BLOCK);
1107 if (block != NULL_TREE)
1109 if (block_previously_created)
1111 if (decls || tags || subblocks)
1113 if (BLOCK_VARS (block) || BLOCK_TYPE_TAGS (block))
1115 warning ("internal compiler error: debugging info corrupted");
1117 BLOCK_VARS (block) = decls;
1118 BLOCK_TYPE_TAGS (block) = tags;
1120 /* We can have previous subblocks and new subblocks when
1121 doing fixup_gotos with complex cleanups. We chain the new
1122 subblocks onto the end of any pre-existing subblocks. */
1123 BLOCK_SUBBLOCKS (block) = chainon (BLOCK_SUBBLOCKS (block),
1126 /* If we created the block earlier on, and we are just
1127 diddling it now, then it already should have a proper
1128 BLOCK_END_NOTE value associated with it. */
1132 BLOCK_VARS (block) = decls;
1133 BLOCK_TYPE_TAGS (block) = tags;
1134 BLOCK_SUBBLOCKS (block) = subblocks;
1135 /* Otherwise, for a new block, install a new BLOCK_END_NOTE value. */
1136 remember_end_note (block);
1140 /* In each subblock, record that this is its superior. */
1143 for (link = subblocks; link; link = TREE_CHAIN (link))
1144 BLOCK_SUPERCONTEXT (link) = block;
1146 /* Clear out the meanings of the local variables of this level. */
1148 if (current_binding_level->is_for_scope && flag_new_for_scope == 1)
1150 struct binding_level *outer = current_binding_level->level_chain;
1151 for (link = decls; link; link = TREE_CHAIN (link))
1153 if (TREE_CODE (link) == VAR_DECL)
1154 DECL_DEAD_FOR_LOCAL (link) = 1;
1156 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = NULL_TREE;
1159 /* Save declarations made in a 'for' statement so we can support pre-ANSI
1160 'for' scoping semantics. */
1162 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
1164 tree id = TREE_PURPOSE (link);
1165 tree decl = IDENTIFIER_LOCAL_VALUE (id);
1167 if (decl && DECL_DEAD_FOR_LOCAL (decl))
1169 /* In this case keep the dead for-decl visible,
1170 but remember what (if anything) it shadowed. */
1171 DECL_SHADOWED_FOR_VAR (decl) = TREE_VALUE (link);
1172 TREE_CHAIN (decl) = outer->dead_vars_from_for;
1173 outer->dead_vars_from_for = decl;
1176 IDENTIFIER_LOCAL_VALUE (id) = TREE_VALUE (link);
1179 else /* Not special for scope. */
1181 for (link = decls; link; link = TREE_CHAIN (link))
1183 if (DECL_NAME (link) != NULL_TREE)
1185 /* If the ident. was used or addressed via a local extern decl,
1186 don't forget that fact. */
1187 if (DECL_EXTERNAL (link))
1189 if (TREE_USED (link))
1190 TREE_USED (DECL_ASSEMBLER_NAME (link)) = 1;
1191 if (TREE_ADDRESSABLE (link))
1192 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1;
1194 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = NULL_TREE;
1198 /* Restore all name-meanings of the outer levels
1199 that were shadowed by this level. */
1201 for (link = current_binding_level->shadowed;
1202 link; link = TREE_CHAIN (link))
1203 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1205 /* We first restore the regular decls and *then* the dead_vars_from_for
1206 to handle this case:
1210 for (int i; ; ) { ...} // i#2
1214 In this case, we want remove the binding for i#3, restoring
1215 that of i#2. Then we want to remove the binding for i#2,
1216 and restore that of i#1. */
1218 link = current_binding_level->dead_vars_from_for;
1219 for (; link != NULL_TREE; link = TREE_CHAIN (link))
1221 tree id = DECL_NAME (link);
1222 if (IDENTIFIER_LOCAL_VALUE (id) == link)
1223 IDENTIFIER_LOCAL_VALUE (id) = DECL_SHADOWED_FOR_VAR (link);
1226 for (link = current_binding_level->class_shadowed;
1227 link; link = TREE_CHAIN (link))
1228 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1229 for (link = current_binding_level->type_shadowed;
1230 link; link = TREE_CHAIN (link))
1231 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1234 /* If the level being exited is the top level of a function,
1235 check over all the labels. */
1239 /* If this is the top level block of a function,
1240 the vars are the function's parameters.
1241 Don't leave them in the BLOCK because they are
1242 found in the FUNCTION_DECL instead. */
1244 BLOCK_VARS (block) = 0;
1246 /* Clear out the definitions of all label names,
1247 since their scopes end here. */
1249 for (link = named_labels; link; link = TREE_CHAIN (link))
1251 register tree label = TREE_VALUE (link);
1253 if (DECL_INITIAL (label) == NULL_TREE)
1255 cp_error_at ("label `%D' used but not defined", label);
1256 /* Avoid crashing later. */
1257 define_label (input_filename, 1, DECL_NAME (label));
1259 else if (warn_unused && !TREE_USED (label))
1260 cp_warning_at ("label `%D' defined but not used", label);
1261 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), NULL_TREE);
1263 /* Put the labels into the "variables" of the
1264 top-level block, so debugger can see them. */
1265 TREE_CHAIN (label) = BLOCK_VARS (block);
1266 BLOCK_VARS (block) = label;
1269 named_labels = NULL_TREE;
1272 /* Any uses of undefined labels now operate under constraints
1273 of next binding contour. */
1275 struct binding_level *level_chain;
1276 level_chain = current_binding_level->level_chain;
1279 struct named_label_list *labels;
1280 for (labels = named_label_uses; labels; labels = labels->next)
1281 if (labels->binding_level == current_binding_level)
1283 labels->binding_level = level_chain;
1284 labels->names_in_scope = level_chain->names;
1289 tmp = current_binding_level->keep;
1291 pop_binding_level ();
1293 DECL_INITIAL (current_function_decl) = block;
1296 if (!block_previously_created)
1297 current_binding_level->blocks
1298 = chainon (current_binding_level->blocks, block);
1300 /* If we did not make a block for the level just exited,
1301 any blocks made for inner levels
1302 (since they cannot be recorded as subblocks in that level)
1303 must be carried forward so they will later become subblocks
1304 of something else. */
1308 current_binding_level->blocks
1309 = chainon (subblocks, current_binding_level->blocks);
1311 current_binding_level->blocks
1312 = chainon (current_binding_level->blocks, subblocks);
1315 /* Take care of compiler's internal binding structures. */
1318 expand_end_bindings (getdecls (), keep, 1);
1319 /* Each and every BLOCK node created here in `poplevel' is important
1320 (e.g. for proper debugging information) so if we created one
1321 earlier, mark it as "used". */
1323 TREE_USED (block) = 1;
1324 block = poplevel (keep, reverse, real_functionbody);
1327 /* Each and every BLOCK node created here in `poplevel' is important
1328 (e.g. for proper debugging information) so if we created one
1329 earlier, mark it as "used". */
1331 TREE_USED (block) = 1;
1335 /* Resume a binding level for a namespace. */
1339 struct binding_level *b;
1343 resume_binding_level (b);
1345 /* Resume the variable caches. */
1346 decls = current_binding_level->names;
1348 /* Restore the meanings of the local variables of this level. */
1350 for (link = decls; link; link = TREE_CHAIN (link))
1352 /* If it doesn't have a name, there is nothing left to do with it. */
1353 if (DECL_NAME (link) == NULL_TREE)
1356 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = link;
1358 /* If this is a TYPE_DECL, push it into the type value slot. */
1359 if (TREE_CODE (link) == TYPE_DECL)
1360 SET_IDENTIFIER_TYPE_VALUE (DECL_NAME (link), TREE_TYPE (link));
1364 /* Delete the node BLOCK from the current binding level.
1365 This is used for the block inside a stmt expr ({...})
1366 so that the block can be reinserted where appropriate. */
1369 delete_block (block)
1373 if (current_binding_level->blocks == block)
1374 current_binding_level->blocks = TREE_CHAIN (block);
1375 for (t = current_binding_level->blocks; t;)
1377 if (TREE_CHAIN (t) == block)
1378 TREE_CHAIN (t) = TREE_CHAIN (block);
1382 TREE_CHAIN (block) = NULL_TREE;
1383 /* Clear TREE_USED which is always set by poplevel.
1384 The flag is set again if insert_block is called. */
1385 TREE_USED (block) = 0;
1388 /* Insert BLOCK at the end of the list of subblocks of the
1389 current binding level. This is used when a BIND_EXPR is expanded,
1390 to handle the BLOCK node inside the BIND_EXPR. */
1393 insert_block (block)
1396 TREE_USED (block) = 1;
1397 current_binding_level->blocks
1398 = chainon (current_binding_level->blocks, block);
1401 /* Set the BLOCK node for the innermost scope
1402 (the one we are currently in). */
1406 register tree block;
1408 current_binding_level->this_block = block;
1411 /* Do a pushlevel for class declarations. */
1416 register struct binding_level *newlevel;
1418 /* Reuse or create a struct for this binding level. */
1419 #if defined(DEBUG_CP_BINDING_LEVELS)
1421 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1422 if (free_binding_level)
1423 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1425 newlevel = free_binding_level;
1426 free_binding_level = free_binding_level->level_chain;
1430 newlevel = make_binding_level ();
1433 #if defined(DEBUG_CP_BINDING_LEVELS)
1435 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1437 push_binding_level (newlevel, 0, 0);
1439 decl_stack = push_decl_level (decl_stack, &decl_obstack);
1440 class_binding_level = current_binding_level;
1441 class_binding_level->parm_flag = 2;
1442 /* We have just pushed into a new binding level. Now, fake out the rest
1443 of the compiler. Set the `current_binding_level' back to point to
1444 the most closely containing non-class binding level. */
1447 current_binding_level = current_binding_level->level_chain;
1449 while (current_binding_level->parm_flag == 2);
1452 /* ...and a poplevel for class declarations. FORCE is used to force
1453 clearing out of CLASS_VALUEs after a class definition. */
1456 poplevel_class (force)
1459 register struct binding_level *level = class_binding_level;
1460 tree block = NULL_TREE;
1463 my_friendly_assert (level != 0, 354);
1465 decl_stack = pop_stack_level (decl_stack);
1466 for (shadowed = level->shadowed; shadowed; shadowed = TREE_CHAIN (shadowed))
1467 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed);
1468 /* If we're leaving a toplevel class, don't bother to do the setting
1469 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1470 shouldn't even be used when current_class_type isn't set, and second,
1471 if we don't touch it here, we're able to use the cache effect if the
1472 next time we're entering a class scope, it is the same class. */
1473 if (current_class_depth != 1 || force)
1474 for (shadowed = level->class_shadowed;
1476 shadowed = TREE_CHAIN (shadowed))
1477 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed);
1479 /* Remember to save what IDENTIFIER's were bound in this scope so we
1480 can recover from cache misses. */
1482 previous_class_type = current_class_type;
1483 previous_class_values = class_binding_level->class_shadowed;
1485 for (shadowed = level->type_shadowed;
1487 shadowed = TREE_CHAIN (shadowed))
1488 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed);
1490 GNU_xref_end_scope ((HOST_WIDE_INT) class_binding_level,
1491 (HOST_WIDE_INT) class_binding_level->level_chain,
1492 class_binding_level->parm_flag,
1493 class_binding_level->keep);
1495 if (class_binding_level->parm_flag != 2)
1496 class_binding_level = (struct binding_level *)0;
1498 /* Now, pop out of the the binding level which we created up in the
1499 `pushlevel_class' routine. */
1500 #if defined(DEBUG_CP_BINDING_LEVELS)
1502 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1504 pop_binding_level ();
1509 /* For debugging. */
1510 static int no_print_functions = 0;
1511 static int no_print_builtins = 0;
1514 print_binding_level (lvl)
1515 struct binding_level *lvl;
1519 fprintf (stderr, " blocks=");
1520 fprintf (stderr, HOST_PTR_PRINTF, lvl->blocks);
1521 fprintf (stderr, " n_incomplete=%d parm_flag=%d keep=%d",
1522 list_length (lvl->incomplete), lvl->parm_flag, lvl->keep);
1523 if (lvl->tag_transparent)
1524 fprintf (stderr, " tag-transparent");
1525 if (lvl->more_cleanups_ok)
1526 fprintf (stderr, " more-cleanups-ok");
1527 if (lvl->have_cleanups)
1528 fprintf (stderr, " have-cleanups");
1529 fprintf (stderr, "\n");
1532 fprintf (stderr, " names:\t");
1533 /* We can probably fit 3 names to a line? */
1534 for (t = lvl->names; t; t = TREE_CHAIN (t))
1536 if (no_print_functions && (TREE_CODE (t) == FUNCTION_DECL))
1538 if (no_print_builtins
1539 && (TREE_CODE (t) == TYPE_DECL)
1540 && (!strcmp (DECL_SOURCE_FILE (t),"<built-in>")))
1543 /* Function decls tend to have longer names. */
1544 if (TREE_CODE (t) == FUNCTION_DECL)
1551 fprintf (stderr, "\n\t");
1554 print_node_brief (stderr, "", t, 0);
1555 if (t == error_mark_node)
1559 fprintf (stderr, "\n");
1563 fprintf (stderr, " tags:\t");
1565 for (t = lvl->tags; t; t = TREE_CHAIN (t))
1567 if (TREE_PURPOSE (t) == NULL_TREE)
1569 else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t)))
1576 fprintf (stderr, "\n\t");
1579 if (TREE_PURPOSE (t) == NULL_TREE)
1581 print_node_brief (stderr, "<unnamed-typedef", TREE_VALUE (t), 0);
1582 fprintf (stderr, ">");
1584 else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t)))
1585 print_node_brief (stderr, "", TREE_VALUE (t), 0);
1588 print_node_brief (stderr, "<typedef", TREE_PURPOSE (t), 0);
1589 print_node_brief (stderr, "", TREE_VALUE (t), 0);
1590 fprintf (stderr, ">");
1594 fprintf (stderr, "\n");
1598 fprintf (stderr, " shadowed:");
1599 for (t = lvl->shadowed; t; t = TREE_CHAIN (t))
1601 fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
1603 fprintf (stderr, "\n");
1605 if (lvl->class_shadowed)
1607 fprintf (stderr, " class-shadowed:");
1608 for (t = lvl->class_shadowed; t; t = TREE_CHAIN (t))
1610 fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
1612 fprintf (stderr, "\n");
1614 if (lvl->type_shadowed)
1616 fprintf (stderr, " type-shadowed:");
1617 for (t = lvl->type_shadowed; t; t = TREE_CHAIN (t))
1619 fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
1621 fprintf (stderr, "\n");
1626 print_other_binding_stack (stack)
1627 struct binding_level *stack;
1629 struct binding_level *level;
1630 for (level = stack; level != global_binding_level; level = level->level_chain)
1632 fprintf (stderr, "binding level ");
1633 fprintf (stderr, HOST_PTR_PRINTF, level);
1634 fprintf (stderr, "\n");
1635 print_binding_level (level);
1640 print_binding_stack ()
1642 struct binding_level *b;
1643 fprintf (stderr, "current_binding_level=");
1644 fprintf (stderr, HOST_PTR_PRINTF, current_binding_level);
1645 fprintf (stderr, "\nclass_binding_level=");
1646 fprintf (stderr, HOST_PTR_PRINTF, class_binding_level);
1647 fprintf (stderr, "\nglobal_binding_level=");
1648 fprintf (stderr, HOST_PTR_PRINTF, global_binding_level);
1649 fprintf (stderr, "\n");
1650 if (class_binding_level)
1652 for (b = class_binding_level; b; b = b->level_chain)
1653 if (b == current_binding_level)
1656 b = class_binding_level;
1658 b = current_binding_level;
1661 b = current_binding_level;
1662 print_other_binding_stack (b);
1663 fprintf (stderr, "global:\n");
1664 print_binding_level (global_binding_level);
1667 /* Return the tree_binding for the name in the given scope
1668 If there are no bindings for the name in the scope, make a new
1669 bindings node. This bindings list of this node will be empty, though. */
1672 binding_for_name (name, scope)
1677 for (iter = IDENTIFIER_NAMESPACE_BINDINGS (name); iter;
1678 iter = TREE_CHAIN (iter))
1680 my_friendly_assert (TREE_CODE (iter) == CPLUS_BINDING, 374);
1681 if (BINDING_SCOPE (iter) == scope)
1684 /* not found, make a new permanent one */
1685 push_obstacks (&permanent_obstack, &permanent_obstack);
1686 iter = make_node (CPLUS_BINDING);
1687 TREE_CHAIN (iter) = IDENTIFIER_NAMESPACE_BINDINGS (name);
1688 IDENTIFIER_NAMESPACE_BINDINGS (name) = iter;
1689 BINDING_SCOPE (iter) = scope;
1690 BINDING_VALUE (iter) = NULL_TREE;
1695 extern char * first_global_object_name;
1697 /* Get a unique name for each call to this routine for unnamed namespaces.
1698 Mostly copied from get_file_function_name. */
1703 static int temp_name_counter = 0;
1707 if (first_global_object_name)
1708 p = first_global_object_name;
1709 else if (main_input_filename)
1710 p = main_input_filename;
1714 #define UNNAMED_NAMESPACE_FORMAT "__%s_%d"
1716 buf = (char *) alloca (sizeof (UNNAMED_NAMESPACE_FORMAT) + strlen (p));
1718 sprintf (buf, UNNAMED_NAMESPACE_FORMAT, p, temp_name_counter++);
1720 /* Don't need to pull weird characters out of global names. */
1721 if (p != first_global_object_name)
1723 for (p = buf+2; *p; p++)
1724 if (! ((*p >= '0' && *p <= '9')
1725 #ifndef NO_DOLLAR_IN_LABEL /* this for `$'; unlikely, but... -- kr */
1728 #ifndef NO_DOT_IN_LABEL /* this for `.'; unlikely, but... */
1731 || (*p >= 'A' && *p <= 'Z')
1732 || (*p >= 'a' && *p <= 'z')))
1736 return get_identifier (buf);
1739 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
1740 select a name that is unique to this compilation unit. */
1743 push_namespace (name)
1749 int implicit_use = 0;
1751 if (!global_namespace)
1753 /* this must be :: */
1754 my_friendly_assert (name == get_identifier ("::"), 377);
1759 name = get_unique_name ();
1764 /* check whether this is an extended namespace definition */
1765 d = IDENTIFIER_NAMESPACE_VALUE (name);
1766 if (d != NULL_TREE && TREE_CODE (d) == NAMESPACE_DECL)
1772 /* make a new namespace, binding the name to it */
1773 d = build_lang_decl (NAMESPACE_DECL, name, void_type_node);
1778 do_using_directive (d);
1779 /* enter the name space */
1780 current_namespace = d;
1783 tree old_id = get_namespace_id ();
1789 /* Create a truly ugly name! */
1790 name = get_unique_name ();
1793 d = build_lang_decl (NAMESPACE_DECL, name, void_type_node);
1795 /* Mark them as external, so redeclaration_error_message doesn't think
1796 they are duplicates. */
1798 DECL_EXTERNAL (d) = 1;
1801 if (NAMESPACE_LEVEL (d) == 0)
1803 /* This is new for this compilation unit. */
1805 declare_namespace_level ();
1806 NAMESPACE_LEVEL (d) = current_binding_level;
1809 resume_level (NAMESPACE_LEVEL (d));
1811 /* This code is just is bit old now... */
1812 current_namespace = tree_cons (NULL_TREE, name, current_namespace);
1813 buf = (char *) alloca (4 + (old_id ? IDENTIFIER_LENGTH (old_id) : 0)
1814 + IDENTIFIER_LENGTH (name));
1815 sprintf (buf, "%s%s", old_id ? IDENTIFIER_POINTER (old_id) : "",
1816 IDENTIFIER_POINTER (name));
1817 TREE_PURPOSE (current_namespace) = get_identifier (buf);
1821 /* Pop from the scope of the current namespace. */
1827 current_namespace = DECL_NAMESPACE (current_namespace);
1830 current_namespace = TREE_CHAIN (current_namespace);
1832 /* Just in case we get out of sync. */
1833 if (! namespace_bindings_p ())
1836 decls = current_binding_level->names;
1838 /* Clear out the meanings of the local variables of this level. */
1840 for (link = decls; link; link = TREE_CHAIN (link))
1842 if (DECL_NAME (link) != NULL_TREE)
1844 /* If the ident. was used or addressed via a local extern decl,
1845 don't forget that fact. */
1846 if (DECL_EXTERNAL (link))
1848 if (TREE_USED (link))
1849 TREE_USED (DECL_ASSEMBLER_NAME (link)) = 1;
1850 if (TREE_ADDRESSABLE (link))
1851 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1;
1853 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = NULL_TREE;
1857 /* Restore all name-meanings of the outer levels
1858 that were shadowed by this level. */
1860 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
1861 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1862 for (link = current_binding_level->class_shadowed;
1863 link; link = TREE_CHAIN (link))
1864 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1865 for (link = current_binding_level->type_shadowed;
1866 link; link = TREE_CHAIN (link))
1867 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1869 /* suspend a level. */
1870 suspend_binding_level ();
1874 /* Subroutines for reverting temporarily to top-level for instantiation
1875 of templates and such. We actually need to clear out the class- and
1876 local-value slots of all identifiers, so that only the global values
1877 are at all visible. Simply setting current_binding_level to the global
1878 scope isn't enough, because more binding levels may be pushed. */
1879 struct saved_scope {
1880 struct binding_level *old_binding_level;
1882 struct saved_scope *prev;
1883 tree class_name, class_type, function_decl;
1884 struct binding_level *class_bindings;
1885 tree *lang_base, *lang_stack, lang_name;
1887 int minimal_parse_mode;
1888 tree last_function_parms;
1889 tree template_parms;
1890 HOST_WIDE_INT processing_template_decl;
1891 tree previous_class_type, previous_class_values;
1892 int processing_specialization;
1893 int processing_explicit_instantiation;
1895 static struct saved_scope *current_saved_scope;
1897 /* A chain of the binding vecs created by store_bindings. We create a
1898 whole bunch of these during compilation, on permanent_obstack, so we
1899 can't just throw them away. */
1900 static tree free_binding_vecs;
1903 store_bindings (names, old_bindings)
1904 tree names, old_bindings;
1907 for (t = names; t; t = TREE_CHAIN (t))
1909 tree binding, t1, id;
1911 if (TREE_CODE (t) == TREE_LIST)
1912 id = TREE_PURPOSE (t);
1917 || (!IDENTIFIER_LOCAL_VALUE (id)
1918 && !IDENTIFIER_CLASS_VALUE (id)))
1921 for (t1 = old_bindings; t1; t1 = TREE_CHAIN (t1))
1922 if (TREE_VEC_ELT (t1, 0) == id)
1925 if (free_binding_vecs)
1927 binding = free_binding_vecs;
1928 free_binding_vecs = TREE_CHAIN (free_binding_vecs);
1931 binding = make_tree_vec (4);
1935 my_friendly_assert (TREE_CODE (id) == IDENTIFIER_NODE, 135);
1936 TREE_VEC_ELT (binding, 0) = id;
1937 TREE_VEC_ELT (binding, 1) = IDENTIFIER_TYPE_VALUE (id);
1938 TREE_VEC_ELT (binding, 2) = IDENTIFIER_LOCAL_VALUE (id);
1939 TREE_VEC_ELT (binding, 3) = IDENTIFIER_CLASS_VALUE (id);
1940 IDENTIFIER_LOCAL_VALUE (id) = NULL_TREE;
1941 IDENTIFIER_CLASS_VALUE (id) = NULL_TREE;
1943 TREE_CHAIN (binding) = old_bindings;
1944 old_bindings = binding;
1948 return old_bindings;
1952 maybe_push_to_top_level (pseudo)
1955 extern int current_lang_stacksize;
1956 struct saved_scope *s
1957 = (struct saved_scope *) xmalloc (sizeof (struct saved_scope));
1958 struct binding_level *b = inner_binding_level;
1959 tree old_bindings = NULL_TREE;
1961 if (current_function_decl)
1962 push_cp_function_context (NULL_TREE);
1964 if (previous_class_type)
1965 old_bindings = store_bindings (previous_class_values, old_bindings);
1967 /* Have to include global_binding_level, because class-level decls
1968 aren't listed anywhere useful. */
1969 for (; b; b = b->level_chain)
1973 if (b == global_binding_level || (pseudo && b->pseudo_global))
1976 old_bindings = store_bindings (b->names, old_bindings);
1977 /* We also need to check class_shadowed to save class-level type
1978 bindings, since pushclass doesn't fill in b->names. */
1979 if (b->parm_flag == 2)
1980 old_bindings = store_bindings (b->class_shadowed, old_bindings);
1982 /* Unwind type-value slots back to top level. */
1983 for (t = b->type_shadowed; t; t = TREE_CHAIN (t))
1984 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t), TREE_VALUE (t));
1987 s->old_binding_level = current_binding_level;
1988 current_binding_level = b;
1990 s->class_name = current_class_name;
1991 s->class_type = current_class_type;
1992 s->function_decl = current_function_decl;
1993 s->class_bindings = class_binding_level;
1994 s->lang_stack = current_lang_stack;
1995 s->lang_base = current_lang_base;
1996 s->lang_stacksize = current_lang_stacksize;
1997 s->lang_name = current_lang_name;
1998 s->minimal_parse_mode = minimal_parse_mode;
1999 s->last_function_parms = last_function_parms;
2000 s->template_parms = current_template_parms;
2001 s->processing_template_decl = processing_template_decl;
2002 s->previous_class_type = previous_class_type;
2003 s->previous_class_values = previous_class_values;
2004 s->processing_specialization = processing_specialization;
2005 s->processing_explicit_instantiation = processing_explicit_instantiation;
2007 current_class_name = current_class_type = NULL_TREE;
2008 current_function_decl = NULL_TREE;
2009 class_binding_level = (struct binding_level *)0;
2010 current_lang_stacksize = 10;
2011 current_lang_stack = current_lang_base
2012 = (tree *) xmalloc (current_lang_stacksize * sizeof (tree));
2013 current_lang_name = lang_name_cplusplus;
2014 strict_prototype = strict_prototypes_lang_cplusplus;
2015 named_labels = NULL_TREE;
2016 minimal_parse_mode = 0;
2017 previous_class_type = previous_class_values = NULL_TREE;
2018 processing_specialization = 0;
2019 processing_explicit_instantiation = 0;
2022 current_template_parms = NULL_TREE;
2023 processing_template_decl = 0;
2026 s->prev = current_saved_scope;
2027 s->old_bindings = old_bindings;
2028 current_saved_scope = s;
2030 push_obstacks (&permanent_obstack, &permanent_obstack);
2034 push_to_top_level ()
2036 maybe_push_to_top_level (0);
2040 pop_from_top_level ()
2042 extern int current_lang_stacksize;
2043 struct saved_scope *s = current_saved_scope;
2046 /* Clear out class-level bindings cache. */
2047 if (previous_class_type)
2050 previous_class_type = NULL_TREE;
2055 current_binding_level = s->old_binding_level;
2056 current_saved_scope = s->prev;
2057 for (t = s->old_bindings; t; )
2060 tree id = TREE_VEC_ELT (t, 0);
2063 IDENTIFIER_TYPE_VALUE (id) = TREE_VEC_ELT (t, 1);
2064 IDENTIFIER_LOCAL_VALUE (id) = TREE_VEC_ELT (t, 2);
2065 IDENTIFIER_CLASS_VALUE (id) = TREE_VEC_ELT (t, 3);
2068 TREE_CHAIN (save) = free_binding_vecs;
2069 free_binding_vecs = save;
2071 current_class_name = s->class_name;
2072 current_class_type = s->class_type;
2073 current_function_decl = s->function_decl;
2074 class_binding_level = s->class_bindings;
2075 free (current_lang_base);
2076 current_lang_base = s->lang_base;
2077 current_lang_stack = s->lang_stack;
2078 current_lang_name = s->lang_name;
2079 current_lang_stacksize = s->lang_stacksize;
2080 if (current_lang_name == lang_name_cplusplus)
2081 strict_prototype = strict_prototypes_lang_cplusplus;
2082 else if (current_lang_name == lang_name_c)
2083 strict_prototype = strict_prototypes_lang_c;
2084 minimal_parse_mode = s->minimal_parse_mode;
2085 last_function_parms = s->last_function_parms;
2086 current_template_parms = s->template_parms;
2087 processing_template_decl = s->processing_template_decl;
2088 previous_class_type = s->previous_class_type;
2089 previous_class_values = s->previous_class_values;
2090 processing_specialization = s->processing_specialization;
2091 processing_explicit_instantiation = s->processing_explicit_instantiation;
2095 if (current_function_decl)
2096 pop_cp_function_context (NULL_TREE);
2099 /* Push a definition of struct, union or enum tag "name".
2100 into binding_level "b". "type" should be the type node,
2101 We assume that the tag "name" is not already defined.
2103 Note that the definition may really be just a forward reference.
2104 In that case, the TYPE_SIZE will be a NULL_TREE.
2106 C++ gratuitously puts all these tags in the name space. */
2108 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
2109 record the shadowed value for this binding contour. TYPE is
2110 the type that ID maps to. */
2113 set_identifier_type_value_with_scope (id, type, b)
2116 struct binding_level *b;
2118 if (b != global_binding_level)
2120 tree old_type_value = IDENTIFIER_TYPE_VALUE (id);
2122 = tree_cons (id, old_type_value, b->type_shadowed);
2124 SET_IDENTIFIER_TYPE_VALUE (id, type);
2127 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
2130 set_identifier_type_value (id, type)
2134 set_identifier_type_value_with_scope (id, type, inner_binding_level);
2137 /* Pop off extraneous binding levels left over due to syntax errors.
2139 We don't pop past namespaces, as they might be valid. */
2144 #ifdef DEBUG_CP_BINDING_LEVELS
2145 fprintf (stderr, "XXX entering pop_everything ()\n");
2147 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
2149 if (class_binding_level)
2150 pop_nested_class (1);
2154 #ifdef DEBUG_CP_BINDING_LEVELS
2155 fprintf (stderr, "XXX leaving pop_everything ()\n");
2159 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2160 Normally put it into the inner-most non-tag-transparent scope,
2161 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2162 The latter is needed for implicit declarations. */
2165 pushtag (name, type, globalize)
2169 register struct binding_level *b;
2173 b = inner_binding_level;
2174 while (b->tag_transparent
2175 || (globalize && b->parm_flag == 2))
2178 if (toplevel_bindings_p ())
2179 b->tags = perm_tree_cons (name, type, b->tags);
2181 b->tags = saveable_tree_cons (name, type, b->tags);
2185 context = type ? TYPE_CONTEXT (type) : NULL_TREE;
2188 tree cs = current_scope ();
2192 else if (cs != NULL_TREE
2193 && TREE_CODE_CLASS (TREE_CODE (cs)) == 't')
2194 /* When declaring a friend class of a local class, we want
2195 to inject the newly named class into the scope
2196 containing the local class, not the namespace scope. */
2197 context = hack_decl_function_context (get_type_decl (cs));
2200 c_decl = TREE_CODE (context) == FUNCTION_DECL
2201 ? context : TYPE_MAIN_DECL (context);
2203 /* Do C++ gratuitous typedefing. */
2204 if (IDENTIFIER_TYPE_VALUE (name) != type)
2206 register tree d = NULL_TREE;
2207 int newdecl = 0, in_class = 0;
2209 if ((b->pseudo_global && b->level_chain->parm_flag == 2)
2210 || b->parm_flag == 2)
2213 d = lookup_nested_type (type, c_decl);
2218 d = build_decl (TYPE_DECL, name, type);
2219 SET_DECL_ARTIFICIAL (d);
2221 set_identifier_type_value_with_scope (name, type, b);
2224 d = TYPE_MAIN_DECL (d);
2226 TYPE_NAME (type) = d;
2227 DECL_CONTEXT (d) = context;
2229 if (IS_AGGR_TYPE (type)
2230 && (/* If !GLOBALIZE then we are looking at a
2232 (processing_template_decl && !globalize)
2233 /* This next condition is tricky. If we are
2234 declaring a friend template class, we will have
2235 GLOBALIZE set, since something like:
2243 declares S2 to be at global scope. The condition
2244 says that we are looking at a primary template
2245 that is being declared in class scope. We can't
2246 just drop the `in class scope' and then not check
2247 GLOBALIZE either since on this code:
2252 struct S2 { S1<T> f(); }
2254 we get called by lookup_template_class (with TYPE
2255 set to S1<T> and GLOBALIZE set to 1). However,
2256 lookup_template_class calls
2257 maybe_push_to_top_level which doesn't clear
2258 processing_template_decl, so we would then
2259 incorrectly call push_template_decl. */
2260 || (current_class_type != NULL_TREE
2261 && (processing_template_decl >
2262 template_class_depth (current_class_type)))))
2264 d = push_template_decl_real (d, globalize);
2265 /* If the current binding level is the binding level for
2266 the template parameters (see the comment in
2267 begin_template_parm_list) and the enclosing level is
2268 a class scope, and we're not looking at a friend,
2269 push the declaration of the member class into the
2270 class scope. In the friend case, push_template_decl
2271 will already have put the friend into global scope,
2273 if (!globalize && b->pseudo_global &&
2274 b->level_chain->parm_flag == 2)
2275 pushdecl_with_scope (CLASSTYPE_TI_TEMPLATE (type),
2279 if (b->parm_flag == 2)
2280 d = pushdecl_class_level (d);
2282 d = pushdecl_with_scope (d, b);
2286 if (ANON_AGGRNAME_P (name))
2287 DECL_IGNORED_P (d) = 1;
2289 TYPE_CONTEXT (type) = DECL_CONTEXT (d);
2290 DECL_ASSEMBLER_NAME (d) = DECL_NAME (d);
2291 DECL_ASSEMBLER_NAME (d)
2292 = get_identifier (build_overload_name (type, 1, 1));
2295 if (b->parm_flag == 2)
2297 TREE_NONLOCAL_FLAG (type) = 1;
2298 if (TYPE_SIZE (current_class_type) == NULL_TREE)
2299 CLASSTYPE_TAGS (current_class_type) = b->tags;
2303 if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
2304 /* Use the canonical TYPE_DECL for this node. */
2305 TYPE_STUB_DECL (type) = TYPE_NAME (type);
2308 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2309 will be the tagged type we just added to the current
2310 binding level. This fake NULL-named TYPE_DECL node helps
2311 dwarfout.c to know when it needs to output a
2312 representation of a tagged type, and it also gives us a
2313 convenient place to record the "scope start" address for
2316 tree d = build_decl (TYPE_DECL, NULL_TREE, type);
2317 TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b);
2321 /* Counter used to create anonymous type names. */
2323 static int anon_cnt = 0;
2325 /* Return an IDENTIFIER which can be used as a name for
2326 anonymous structs and unions. */
2333 sprintf (buf, ANON_AGGRNAME_FORMAT, anon_cnt++);
2334 return get_identifier (buf);
2337 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2338 This keeps dbxout from getting confused. */
2343 register struct binding_level *b;
2345 static int last_cnt = 0;
2347 /* Fast out if no new anon names were declared. */
2348 if (last_cnt == anon_cnt)
2351 b = current_binding_level;
2352 while (b->tag_transparent)
2357 /* A NULL purpose means we have already processed all tags
2358 from here to the end of the list. */
2359 if (TREE_PURPOSE (tags) == NULL_TREE)
2361 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags)))
2362 TREE_PURPOSE (tags) = NULL_TREE;
2363 tags = TREE_CHAIN (tags);
2365 last_cnt = anon_cnt;
2368 /* Subroutine of duplicate_decls: return truthvalue of whether
2369 or not types of these decls match.
2371 For C++, we must compare the parameter list so that `int' can match
2372 `int&' in a parameter position, but `int&' is not confused with
2376 decls_match (newdecl, olddecl)
2377 tree newdecl, olddecl;
2381 if (TREE_CODE (newdecl) == FUNCTION_DECL
2382 && TREE_CODE (olddecl) == FUNCTION_DECL)
2384 tree f1 = TREE_TYPE (newdecl);
2385 tree f2 = TREE_TYPE (olddecl);
2386 tree p1 = TYPE_ARG_TYPES (f1);
2387 tree p2 = TYPE_ARG_TYPES (f2);
2389 /* When we parse a static member function definition,
2390 we put together a FUNCTION_DECL which thinks its type
2391 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2393 if (TREE_CODE (f1) == METHOD_TYPE && DECL_STATIC_FUNCTION_P (olddecl))
2394 revert_static_member_fn (&newdecl, &f1, &p1);
2395 else if (TREE_CODE (f2) == METHOD_TYPE
2396 && DECL_STATIC_FUNCTION_P (newdecl))
2397 revert_static_member_fn (&olddecl, &f2, &p2);
2399 /* Here we must take care of the case where new default
2400 parameters are specified. Also, warn if an old
2401 declaration becomes ambiguous because default
2402 parameters may cause the two to be ambiguous. */
2403 if (TREE_CODE (f1) != TREE_CODE (f2))
2405 if (TREE_CODE (f1) == OFFSET_TYPE)
2406 cp_compiler_error ("`%D' redeclared as member function", newdecl);
2408 cp_compiler_error ("`%D' redeclared as non-member function", newdecl);
2412 if (comptypes (TREE_TYPE (f1), TREE_TYPE (f2), 1))
2414 if (! strict_prototypes_lang_c && DECL_LANGUAGE (olddecl) == lang_c
2417 types_match = self_promoting_args_p (p1);
2418 if (p1 == void_list_node)
2419 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2421 else if (!strict_prototypes_lang_c && DECL_LANGUAGE (olddecl)==lang_c
2422 && DECL_LANGUAGE (newdecl) == lang_c && p1 == NULL_TREE)
2424 types_match = self_promoting_args_p (p2);
2425 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2428 types_match = compparms (p1, p2, 3);
2433 else if (TREE_CODE (newdecl) == TEMPLATE_DECL
2434 && TREE_CODE (olddecl) == TEMPLATE_DECL)
2436 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
2437 DECL_TEMPLATE_PARMS (olddecl)))
2440 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2443 types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl),
2444 DECL_TEMPLATE_RESULT (newdecl));
2448 if (TREE_TYPE (newdecl) == error_mark_node)
2449 types_match = TREE_TYPE (olddecl) == error_mark_node;
2450 else if (TREE_TYPE (olddecl) == NULL_TREE)
2451 types_match = TREE_TYPE (newdecl) == NULL_TREE;
2452 else if (TREE_TYPE (newdecl) == NULL_TREE)
2454 /* Qualifiers must match, and they may be present on either, the type
2456 else if ((TREE_READONLY (newdecl)
2457 || TYPE_READONLY (TREE_TYPE (newdecl)))
2458 == (TREE_READONLY (olddecl)
2459 || TYPE_READONLY (TREE_TYPE (olddecl)))
2460 && (TREE_THIS_VOLATILE (newdecl)
2461 || TYPE_VOLATILE (TREE_TYPE (newdecl)))
2462 == (TREE_THIS_VOLATILE (olddecl)
2463 || TYPE_VOLATILE (TREE_TYPE (olddecl))))
2464 types_match = comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl)),
2465 TYPE_MAIN_VARIANT (TREE_TYPE (olddecl)), 1);
2473 /* If NEWDECL is `static' and an `extern' was seen previously,
2474 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2475 information about previous usage as an `extern'.)
2477 Note that this does not apply to the C++ case of declaring
2478 a variable `extern const' and then later `const'.
2480 Don't complain about built-in functions, since they are beyond
2481 the user's control. */
2484 warn_extern_redeclared_static (newdecl, olddecl)
2485 tree newdecl, olddecl;
2489 static char *explicit_extern_static_warning
2490 = "`%D' was declared `extern' and later `static'";
2491 static char *implicit_extern_static_warning
2492 = "`%D' was declared implicitly `extern' and later `static'";
2494 if (TREE_CODE (newdecl) == TYPE_DECL)
2497 name = DECL_ASSEMBLER_NAME (newdecl);
2498 if (TREE_PUBLIC (name) && DECL_THIS_STATIC (newdecl))
2500 /* It's okay to redeclare an ANSI built-in function as static,
2501 or to declare a non-ANSI built-in function as anything. */
2502 if (! (TREE_CODE (newdecl) == FUNCTION_DECL
2503 && olddecl != NULL_TREE
2504 && TREE_CODE (olddecl) == FUNCTION_DECL
2505 && (DECL_BUILT_IN (olddecl)
2506 || DECL_BUILT_IN_NONANSI (olddecl))))
2508 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name)
2509 ? implicit_extern_static_warning
2510 : explicit_extern_static_warning, newdecl);
2511 if (olddecl != NULL_TREE)
2512 cp_pedwarn_at ("previous declaration of `%D'", olddecl);
2517 /* Handle when a new declaration NEWDECL has the same name as an old
2518 one OLDDECL in the same binding contour. Prints an error message
2521 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2522 Otherwise, return 0. */
2525 duplicate_decls (newdecl, olddecl)
2526 tree newdecl, olddecl;
2528 extern struct obstack permanent_obstack;
2529 unsigned olddecl_uid = DECL_UID (olddecl);
2530 int olddecl_friend = 0, types_match = 0;
2531 int new_defines_function;
2533 if (newdecl == olddecl)
2536 if (TREE_CODE_CLASS (TREE_CODE (olddecl)) == 'd')
2537 DECL_MACHINE_ATTRIBUTES (newdecl)
2538 = merge_machine_decl_attributes (olddecl, newdecl);
2540 types_match = decls_match (newdecl, olddecl);
2542 if (TREE_CODE (olddecl) != TREE_LIST)
2543 olddecl_friend = DECL_LANG_SPECIFIC (olddecl) && DECL_FRIEND_P (olddecl);
2545 /* If either the type of the new decl or the type of the old decl is an
2546 error_mark_node, then that implies that we have already issued an
2547 error (earlier) for some bogus type specification, and in that case,
2548 it is rather pointless to harass the user with yet more error message
2549 about the same declaration, so well just pretent the types match here. */
2550 if (TREE_TYPE (newdecl) == error_mark_node
2551 || TREE_TYPE (olddecl) == error_mark_node)
2554 if (TREE_CODE (olddecl) == FUNCTION_DECL
2555 && DECL_ARTIFICIAL (olddecl)
2556 && (DECL_BUILT_IN (olddecl) || DECL_BUILT_IN_NONANSI (olddecl)))
2558 /* If you declare a built-in or predefined function name as static,
2559 the old definition is overridden, but optionally warn this was a
2560 bad choice of name. Ditto for overloads. */
2561 if (! TREE_PUBLIC (newdecl)
2562 || (TREE_CODE (newdecl) == FUNCTION_DECL
2563 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)))
2566 cp_warning ("shadowing %s function `%#D'",
2567 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
2569 /* Discard the old built-in function. */
2572 else if (! types_match)
2574 if (TREE_CODE (newdecl) != FUNCTION_DECL)
2576 /* If the built-in is not ansi, then programs can override
2577 it even globally without an error. */
2578 if (! DECL_BUILT_IN (olddecl))
2579 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2583 cp_error ("declaration of `%#D'", newdecl);
2584 cp_error ("conflicts with built-in declaration `%#D'",
2590 cp_warning ("declaration of `%#D'", newdecl);
2591 cp_warning ("conflicts with built-in declaration `%#D'",
2595 else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
2597 if ((TREE_CODE (newdecl) == FUNCTION_DECL
2598 && DECL_FUNCTION_TEMPLATE_P (olddecl))
2599 || (TREE_CODE (olddecl) == FUNCTION_DECL
2600 && DECL_FUNCTION_TEMPLATE_P (newdecl)))
2603 cp_error ("`%#D' redeclared as different kind of symbol", newdecl);
2604 if (TREE_CODE (olddecl) == TREE_LIST)
2605 olddecl = TREE_VALUE (olddecl);
2606 cp_error_at ("previous declaration of `%#D'", olddecl);
2608 /* New decl is completely inconsistent with the old one =>
2609 tell caller to replace the old one. */
2613 else if (!types_match)
2615 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2617 /* The name of a class template may not be declared to refer to
2618 any other template, class, function, object, namespace, value,
2619 or type in the same scope. */
2620 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
2621 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2623 cp_error ("declaration of template `%#D'", newdecl);
2624 cp_error_at ("conflicts with previous declaration `%#D'",
2627 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
2628 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
2629 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
2630 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))), 3)
2631 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
2632 DECL_TEMPLATE_PARMS (olddecl)))
2634 cp_error ("new declaration `%#D'", newdecl);
2635 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2639 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2641 if (DECL_LANGUAGE (newdecl) == lang_c
2642 && DECL_LANGUAGE (olddecl) == lang_c)
2644 cp_error ("declaration of C function `%#D' conflicts with",
2646 cp_error_at ("previous declaration `%#D' here", olddecl);
2648 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
2649 TYPE_ARG_TYPES (TREE_TYPE (olddecl)), 3))
2651 cp_error ("new declaration `%#D'", newdecl);
2652 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2658 /* Already complained about this, so don't do so again. */
2659 else if (current_class_type == NULL_TREE
2660 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type)
2662 cp_error ("conflicting types for `%#D'", newdecl);
2663 cp_error_at ("previous declaration as `%#D'", olddecl);
2666 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2667 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl)
2668 && (!DECL_TEMPLATE_INFO (newdecl)
2669 || (DECL_TI_TEMPLATE (newdecl)
2670 != DECL_TI_TEMPLATE (olddecl))))
2671 || (DECL_TEMPLATE_SPECIALIZATION (newdecl)
2672 && (!DECL_TEMPLATE_INFO (olddecl)
2673 || (DECL_TI_TEMPLATE (olddecl)
2674 != DECL_TI_TEMPLATE (newdecl))))))
2675 /* It's OK to have a template specialization and a non-template
2676 with the same type, or to have specializations of two
2677 different templates with the same type. Note that if one is a
2678 specialization, and the other is an instantiation of the same
2679 template, that we do not exit at this point. That situation
2680 can occur if we instantiate a template class, and then
2681 specialize one of its methods. This situation is legal, but
2682 the declarations must be merged in the usual way. */
2684 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2685 && ((DECL_TEMPLATE_INSTANTIATION (olddecl)
2686 && !DECL_USE_TEMPLATE (newdecl))
2687 || (DECL_TEMPLATE_INSTANTIATION (newdecl)
2688 && !DECL_USE_TEMPLATE (olddecl))))
2689 /* One of the declarations is a template instantiation, and the
2690 other is not a template at all. That's OK. */
2694 char *errmsg = redeclaration_error_message (newdecl, olddecl);
2697 cp_error (errmsg, newdecl);
2698 if (DECL_NAME (olddecl) != NULL_TREE)
2699 cp_error_at ((DECL_INITIAL (olddecl)
2700 && current_binding_level == global_binding_level)
2701 ? "`%#D' previously defined here"
2702 : "`%#D' previously declared here", olddecl);
2704 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2705 && DECL_INITIAL (olddecl) != NULL_TREE
2706 && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE
2707 && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE)
2709 /* Prototype decl follows defn w/o prototype. */
2710 cp_warning_at ("prototype for `%#D'", newdecl);
2711 cp_warning_at ("follows non-prototype definition here", olddecl);
2713 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2714 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
2716 /* extern "C" int foo ();
2717 int foo () { bar (); }
2719 if (current_lang_stack == current_lang_base)
2720 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
2723 cp_error_at ("previous declaration of `%#D' with %L linkage",
2724 olddecl, DECL_LANGUAGE (olddecl));
2725 cp_error ("conflicts with new declaration with %L linkage",
2726 DECL_LANGUAGE (newdecl));
2730 if (DECL_LANG_SPECIFIC (olddecl) && DECL_USE_TEMPLATE (olddecl))
2732 else if (TREE_CODE (olddecl) == FUNCTION_DECL)
2734 tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
2735 tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
2738 if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
2739 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
2741 for (; t1 && t1 != void_list_node;
2742 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
2743 if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
2745 if (1 == simple_cst_equal (TREE_PURPOSE (t1),
2750 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2752 cp_pedwarn_at ("after previous specification in `%#D'",
2758 cp_error ("default argument given for parameter %d of `%#D'",
2760 cp_error_at ("after previous specification in `%#D'",
2765 if (DECL_THIS_INLINE (newdecl) && ! DECL_THIS_INLINE (olddecl)
2766 && TREE_ADDRESSABLE (olddecl) && warn_inline)
2768 cp_warning ("`%#D' was used before it was declared inline",
2770 cp_warning_at ("previous non-inline declaration here",
2774 /* These bits are logically part of the type for non-functions. */
2775 else if (TREE_READONLY (newdecl) != TREE_READONLY (olddecl)
2776 || TREE_THIS_VOLATILE (newdecl) != TREE_THIS_VOLATILE (olddecl))
2778 cp_pedwarn ("type qualifiers for `%#D'", newdecl);
2779 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl);
2783 /* If new decl is `static' and an `extern' was seen previously,
2785 warn_extern_redeclared_static (newdecl, olddecl);
2787 /* We have committed to returning 1 at this point. */
2788 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2790 /* Now that functions must hold information normally held
2791 by field decls, there is extra work to do so that
2792 declaration information does not get destroyed during
2794 if (DECL_VINDEX (olddecl))
2795 DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
2796 if (DECL_CONTEXT (olddecl))
2797 DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
2798 if (DECL_CLASS_CONTEXT (olddecl))
2799 DECL_CLASS_CONTEXT (newdecl) = DECL_CLASS_CONTEXT (olddecl);
2800 if (DECL_CHAIN (newdecl) == NULL_TREE)
2801 DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl);
2802 if (DECL_PENDING_INLINE_INFO (newdecl) == (struct pending_inline *)0)
2803 DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
2804 DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
2805 DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
2806 DECL_ABSTRACT_VIRTUAL_P (newdecl) |= DECL_ABSTRACT_VIRTUAL_P (olddecl);
2807 DECL_VIRTUAL_P (newdecl) |= DECL_VIRTUAL_P (olddecl);
2808 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl);
2811 /* Deal with C++: must preserve virtual function table size. */
2812 if (TREE_CODE (olddecl) == TYPE_DECL)
2814 register tree newtype = TREE_TYPE (newdecl);
2815 register tree oldtype = TREE_TYPE (olddecl);
2817 if (newtype != error_mark_node && oldtype != error_mark_node
2818 && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
2820 CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype);
2821 CLASSTYPE_FRIEND_CLASSES (newtype)
2822 = CLASSTYPE_FRIEND_CLASSES (oldtype);
2826 /* Special handling ensues if new decl is a function definition. */
2827 new_defines_function = (TREE_CODE (newdecl) == FUNCTION_DECL
2828 && DECL_INITIAL (newdecl) != NULL_TREE);
2830 /* Optionally warn about more than one declaration for the same name,
2831 but don't warn about a function declaration followed by a definition. */
2832 if (warn_redundant_decls
2833 && ! DECL_ARTIFICIAL (olddecl)
2834 && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
2835 /* Don't warn about extern decl followed by (tentative) definition. */
2836 && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))
2837 /* Don't warn about friends, let add_friend take care of it. */
2838 && (TREE_CODE (newdecl) == FUNCTION_DECL && ! DECL_FRIEND_P (newdecl)))
2840 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl);
2841 cp_warning_at ("previous declaration of `%D'", olddecl);
2844 /* Copy all the DECL_... slots specified in the new decl
2845 except for any that we copy here from the old type. */
2847 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2849 if (DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)) == NULL_TREE)
2851 if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl),
2852 DECL_TEMPLATE_RESULT (olddecl)))
2853 cp_error ("invalid redeclaration of %D", newdecl);
2854 TREE_TYPE (olddecl) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl));
2855 DECL_TEMPLATE_PARMS (olddecl) = DECL_TEMPLATE_PARMS (newdecl);
2856 DECL_TEMPLATE_INFO (olddecl) = DECL_TEMPLATE_INFO (newdecl);
2863 /* Automatically handles default parameters. */
2864 tree oldtype = TREE_TYPE (olddecl);
2867 /* Make sure we put the new type in the same obstack as the old one. */
2869 push_obstacks (TYPE_OBSTACK (oldtype), TYPE_OBSTACK (oldtype));
2872 push_obstacks_nochange ();
2873 end_temporary_allocation ();
2876 /* Merge the data types specified in the two decls. */
2877 newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
2879 if (TREE_CODE (newdecl) == VAR_DECL)
2880 DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
2881 /* Do this after calling `common_type' so that default
2882 parameters don't confuse us. */
2883 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2884 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))
2885 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl))))
2887 TREE_TYPE (newdecl) = build_exception_variant (newtype,
2888 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)));
2889 TREE_TYPE (olddecl) = build_exception_variant (newtype,
2890 TYPE_RAISES_EXCEPTIONS (oldtype));
2892 if ((pedantic || (! DECL_IN_SYSTEM_HEADER (olddecl)
2893 && DECL_SOURCE_LINE (olddecl) != 0))
2895 && ! compexcepttypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
2897 cp_pedwarn ("declaration of `%D' throws different exceptions",
2899 cp_pedwarn_at ("previous declaration here", olddecl);
2902 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
2904 /* Lay the type out, unless already done. */
2905 if (oldtype != TREE_TYPE (newdecl)
2906 && TREE_TYPE (newdecl) != error_mark_node
2907 && !(processing_template_decl && uses_template_parms (newdecl)))
2908 layout_type (TREE_TYPE (newdecl));
2910 if ((TREE_CODE (newdecl) == VAR_DECL
2911 || TREE_CODE (newdecl) == PARM_DECL
2912 || TREE_CODE (newdecl) == RESULT_DECL
2913 || TREE_CODE (newdecl) == FIELD_DECL
2914 || TREE_CODE (newdecl) == TYPE_DECL)
2915 && !(processing_template_decl && uses_template_parms (newdecl)))
2916 layout_decl (newdecl, 0);
2918 /* Merge the type qualifiers. */
2919 if (TREE_READONLY (newdecl))
2920 TREE_READONLY (olddecl) = 1;
2921 if (TREE_THIS_VOLATILE (newdecl))
2922 TREE_THIS_VOLATILE (olddecl) = 1;
2924 /* Merge the initialization information. */
2925 if (DECL_INITIAL (newdecl) == NULL_TREE
2926 && DECL_INITIAL (olddecl) != NULL_TREE)
2928 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
2929 DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl);
2930 DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl);
2933 /* Merge the section attribute.
2934 We want to issue an error if the sections conflict but that must be
2935 done later in decl_attributes since we are called before attributes
2937 if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
2938 DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
2940 /* Keep the old rtl since we can safely use it, unless it's the
2941 call to abort() used for abstract virtuals. */
2942 if ((DECL_LANG_SPECIFIC (olddecl)
2943 && !DECL_ABSTRACT_VIRTUAL_P (olddecl))
2944 || DECL_RTL (olddecl) != DECL_RTL (abort_fndecl))
2945 DECL_RTL (newdecl) = DECL_RTL (olddecl);
2949 /* If cannot merge, then use the new type and qualifiers,
2950 and don't preserve the old rtl. */
2953 /* Clean out any memory we had of the old declaration. */
2954 tree oldstatic = value_member (olddecl, static_aggregates);
2956 TREE_VALUE (oldstatic) = error_mark_node;
2958 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
2959 TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
2960 TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
2961 TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
2964 /* Merge the storage class information. */
2965 DECL_WEAK (newdecl) |= DECL_WEAK (olddecl);
2966 DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl);
2967 TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
2968 TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
2969 if (! DECL_EXTERNAL (olddecl))
2970 DECL_EXTERNAL (newdecl) = 0;
2972 if (DECL_LANG_SPECIFIC (newdecl))
2974 DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
2975 DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
2976 DECL_COMDAT (newdecl) |= DECL_COMDAT (olddecl);
2979 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2981 if (DECL_TEMPLATE_INSTANTIATION (olddecl)
2982 && !DECL_TEMPLATE_INSTANTIATION (newdecl))
2984 /* If newdecl is not a specialization, then it is not a
2985 template-related function at all. And that means that we
2986 shoud have exited above, returning 0. */
2987 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl),
2990 if (TREE_USED (olddecl))
2991 /* From [temp.expl.spec]:
2993 If a template, a member template or the member of a class
2994 template is explicitly specialized then that
2995 specialization shall be declared before the first use of
2996 that specialization that would cause an implicit
2997 instantiation to take place, in every translation unit in
2998 which such a use occurs. */
2999 cp_error ("explicit specialization of %D after first use",
3002 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl);
3004 DECL_THIS_INLINE (newdecl) |= DECL_THIS_INLINE (olddecl);
3006 /* If either decl says `inline', this fn is inline, unless its
3007 definition was passed already. */
3008 if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE)
3009 DECL_INLINE (olddecl) = 1;
3010 DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
3014 DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl);
3015 DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl);
3016 DECL_RTL (olddecl) = DECL_RTL (newdecl);
3018 if (! types_match || new_defines_function)
3020 /* These need to be copied so that the names are available. */
3021 DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
3022 DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
3024 if (new_defines_function)
3025 /* If defining a function declared with other language
3026 linkage, use the previously declared language linkage. */
3027 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
3030 /* If redeclaring a builtin function, and not a definition,
3031 it stays built in. */
3032 if (DECL_BUILT_IN (olddecl))
3034 DECL_BUILT_IN (newdecl) = 1;
3035 DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
3036 /* If we're keeping the built-in definition, keep the rtl,
3037 regardless of declaration matches. */
3038 DECL_RTL (newdecl) = DECL_RTL (olddecl);
3041 DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl);
3043 DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
3044 if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl)))
3045 /* Previously saved insns go together with
3046 the function's previous definition. */
3047 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
3048 /* Don't clear out the arguments if we're redefining a function. */
3049 if (DECL_ARGUMENTS (olddecl))
3050 DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
3052 if (DECL_LANG_SPECIFIC (olddecl))
3053 DECL_MAIN_VARIANT (newdecl) = DECL_MAIN_VARIANT (olddecl);
3056 if (TREE_CODE (newdecl) == NAMESPACE_DECL)
3058 NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
3061 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
3063 DECL_TEMPLATE_SPECIALIZATIONS (newdecl)
3064 = DECL_TEMPLATE_SPECIALIZATIONS (olddecl);
3065 if (DECL_CHAIN (newdecl) == NULL_TREE)
3066 DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl);
3069 /* Now preserve various other info from the definition. */
3070 TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
3071 TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
3072 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
3073 DECL_ASSEMBLER_NAME (newdecl) = DECL_ASSEMBLER_NAME (olddecl);
3075 /* Don't really know how much of the language-specific
3076 values we should copy from old to new. */
3077 if (DECL_LANG_SPECIFIC (olddecl))
3079 DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
3080 DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl);
3081 DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
3082 if (DECL_TEMPLATE_INFO (newdecl) == NULL_TREE)
3084 DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
3085 DECL_USE_TEMPLATE (newdecl) = DECL_USE_TEMPLATE (olddecl);
3089 if (TREE_CODE (newdecl) == FUNCTION_DECL)
3092 struct lang_decl *ol = DECL_LANG_SPECIFIC (olddecl);
3093 struct lang_decl *nl = DECL_LANG_SPECIFIC (newdecl);
3095 function_size = sizeof (struct tree_decl);
3097 bcopy ((char *) newdecl + sizeof (struct tree_common),
3098 (char *) olddecl + sizeof (struct tree_common),
3099 function_size - sizeof (struct tree_common));
3101 /* Can we safely free the storage used by newdecl? */
3103 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
3104 & ~ obstack_alignment_mask (&permanent_obstack))
3106 if (DECL_TEMPLATE_INSTANTIATION (newdecl))
3108 /* If newdecl is a template instantiation, it is possible that
3109 the following sequence of events has occurred:
3111 o A friend function was declared in a class template. The
3112 class template was instantiated.
3114 o The instantiation of the friend declaration was
3115 recorded on the instantiation list, and is newdecl.
3117 o Later, however, instantiate_class_template called pushdecl
3118 on the newdecl to perform name injection. But, pushdecl in
3119 turn called duplicate_decls when it discovered that another
3120 declaration of a global function with the same name already
3123 o Here, in duplicate_decls, we decided to clobber newdecl.
3125 If we're going to do that, we'd better make sure that
3126 olddecl, and not newdecl, is on the list of
3127 instantiations so that if we try to do the instantiation
3128 again we won't get the clobbered declaration. */
3130 tree tmpl = DECL_TI_TEMPLATE (newdecl);
3131 tree decls = DECL_TEMPLATE_SPECIALIZATIONS (tmpl);
3133 for (; decls; decls = TREE_CHAIN (decls))
3134 if (TREE_VALUE (decls) == newdecl)
3135 TREE_VALUE (decls) = olddecl;
3138 if (((char *)newdecl + ROUND (function_size) == (char *)nl
3139 && ((char *)newdecl + ROUND (function_size)
3140 + ROUND (sizeof (struct lang_decl))
3141 == obstack_next_free (&permanent_obstack)))
3142 || ((char *)newdecl + ROUND (function_size)
3143 == obstack_next_free (&permanent_obstack)))
3145 DECL_MAIN_VARIANT (newdecl) = olddecl;
3146 DECL_LANG_SPECIFIC (olddecl) = ol;
3147 bcopy ((char *)nl, (char *)ol, sizeof (struct lang_decl));
3149 obstack_free (&permanent_obstack, newdecl);
3151 else if (LANG_DECL_PERMANENT (ol) && ol != nl)
3153 if (DECL_MAIN_VARIANT (olddecl) == olddecl)
3155 /* Save these lang_decls that would otherwise be lost. */
3156 extern tree free_lang_decl_chain;
3157 tree free_lang_decl = (tree) ol;
3159 if (DECL_LANG_SPECIFIC (olddecl) == ol)
3162 TREE_CHAIN (free_lang_decl) = free_lang_decl_chain;
3163 free_lang_decl_chain = free_lang_decl;
3167 /* Storage leak. */;
3173 bcopy ((char *) newdecl + sizeof (struct tree_common),
3174 (char *) olddecl + sizeof (struct tree_common),
3175 sizeof (struct tree_decl) - sizeof (struct tree_common)
3176 + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *));
3179 DECL_UID (olddecl) = olddecl_uid;
3181 DECL_FRIEND_P (olddecl) = 1;
3183 /* NEWDECL contains the merged attribute lists.
3184 Update OLDDECL to be the same. */
3185 DECL_MACHINE_ATTRIBUTES (olddecl) = DECL_MACHINE_ATTRIBUTES (newdecl);
3190 /* Record a decl-node X as belonging to the current lexical scope.
3191 Check for errors (such as an incompatible declaration for the same
3192 name already seen in the same scope).
3194 Returns either X or an old decl for the same name.
3195 If an old decl is returned, it may have been smashed
3196 to agree with what X says. */
3203 register tree name = DECL_ASSEMBLER_NAME (x);
3204 register struct binding_level *b = current_binding_level;
3206 if (x != current_function_decl
3207 /* Don't change DECL_CONTEXT of virtual methods. */
3208 && (TREE_CODE (x) != FUNCTION_DECL || !DECL_VIRTUAL_P (x))
3209 && ! DECL_CONTEXT (x))
3210 DECL_CONTEXT (x) = current_function_decl;
3211 /* A local declaration for a function doesn't constitute nesting. */
3212 if (TREE_CODE (x) == FUNCTION_DECL && DECL_INITIAL (x) == 0)
3213 DECL_CONTEXT (x) = 0;
3215 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3216 compiler wants to use. */
3217 if (TREE_CODE (x) == TYPE_DECL || TREE_CODE (x) == VAR_DECL
3218 || TREE_CODE (x) == NAMESPACE_DECL || TREE_CODE (x) == TEMPLATE_TYPE_PARM
3219 || TREE_CODE (x) == TEMPLATE_TEMPLATE_PARM)
3220 name = DECL_NAME (x);
3225 /* Not needed...see below. */
3229 if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
3230 name = TREE_OPERAND (name, 0);
3232 t = lookup_name_current_level (name);
3233 if (t == error_mark_node)
3235 /* error_mark_node is 0 for a while during initialization! */
3237 cp_error_at ("`%#D' used prior to declaration", x);
3240 else if (t != NULL_TREE)
3243 /* This is turned off until I have time to do it right (bpk). */
3244 /* With the code below that uses it... */
3245 file = DECL_SOURCE_FILE (t);
3246 line = DECL_SOURCE_LINE (t);
3248 if (TREE_CODE (t) == PARM_DECL)
3250 if (DECL_CONTEXT (t) == NULL_TREE)
3251 fatal ("parse errors have confused me too much");
3253 /* Check for duplicate params. */
3254 if (duplicate_decls (x, t))
3257 else if (((TREE_CODE (x) == FUNCTION_DECL && DECL_LANGUAGE (x) == lang_c)
3258 || DECL_FUNCTION_TEMPLATE_P (x))
3259 && is_overloaded_fn (t))
3260 /* don't do anything just yet */;
3261 else if (t == wchar_decl_node)
3263 if (pedantic && ! DECL_IN_SYSTEM_HEADER (x))
3264 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x));
3266 /* Throw away the redeclaration. */
3269 else if (TREE_CODE (t) != TREE_CODE (x))
3271 if ((TREE_CODE (t) == TYPE_DECL && DECL_ARTIFICIAL (t)
3272 && TREE_CODE (x) != TYPE_DECL
3273 && ! (TREE_CODE (x) == TEMPLATE_DECL
3274 && TREE_CODE (DECL_TEMPLATE_RESULT (x)) == TYPE_DECL))
3275 || (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3276 && TREE_CODE (t) != TYPE_DECL
3277 && ! (TREE_CODE (t) == TEMPLATE_DECL
3278 && (TREE_CODE (DECL_TEMPLATE_RESULT (t))
3281 /* We do nothing special here, because C++ does such nasty
3282 things with TYPE_DECLs. Instead, just let the TYPE_DECL
3283 get shadowed, and know that if we need to find a TYPE_DECL
3284 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
3285 slot of the identifier. */
3288 else if (duplicate_decls (x, t))
3291 else if (duplicate_decls (x, t))
3294 /* This is turned off until I have time to do it right (bpk). */
3296 /* Also warn if they did a prototype with `static' on it, but
3297 then later left the `static' off. */
3298 if (! TREE_PUBLIC (name) && TREE_PUBLIC (x))
3300 if (DECL_LANG_SPECIFIC (t) && DECL_FRIEND_P (t))
3305 cp_warning ("`static' missing from declaration of `%D'",
3307 warning_with_file_and_line (file, line,
3308 "previous declaration of `%s'",
3309 decl_as_string (t, 0));
3312 /* Now fix things so it'll do what they expect. */
3313 if (current_function_decl)
3314 TREE_PUBLIC (current_function_decl) = 0;
3316 /* Due to interference in memory reclamation (X may be
3317 obstack-deallocated at this point), we must guard against
3318 one really special case. [jason: This should be handled
3319 by start_function] */
3320 if (current_function_decl == x)
3321 current_function_decl = t;
3323 if (TREE_CODE (t) == TYPE_DECL)
3324 SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t));
3325 else if (TREE_CODE (t) == FUNCTION_DECL)
3326 check_default_args (t);
3332 if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_FUNCTION_MEMBER_P (x))
3334 t = push_overloaded_decl (x, 1);
3335 if (t != x || DECL_LANGUAGE (x) == lang_c)
3338 else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_CONTEXT (x) == NULL_TREE)
3339 return push_overloaded_decl (x, 0);
3341 /* If declaring a type as a typedef, copy the type (unless we're
3342 at line 0), and install this TYPE_DECL as the new type's typedef
3343 name. See the extensive comment in ../c-decl.c (pushdecl). */
3344 if (TREE_CODE (x) == TYPE_DECL)
3346 tree type = TREE_TYPE (x);
3347 if (DECL_SOURCE_LINE (x) == 0)
3349 if (TYPE_NAME (type) == 0)
3350 TYPE_NAME (type) = x;
3352 else if (type != error_mark_node && TYPE_NAME (type) != x)
3354 DECL_ORIGINAL_TYPE (x) = type;
3355 type = build_type_copy (type);
3356 TYPE_STUB_DECL (type) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x));
3357 TYPE_NAME (type) = x;
3358 TREE_TYPE (x) = type;
3361 if (type != error_mark_node
3363 && TYPE_IDENTIFIER (type))
3364 set_identifier_type_value_with_scope (DECL_NAME (x), type, b);
3367 /* Multiple external decls of the same identifier ought to match.
3369 We get warnings about inline functions where they are defined.
3370 We get warnings about other functions from push_overloaded_decl.
3372 Avoid duplicate warnings where they are used. */
3373 if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL)
3376 tree bindings = binding_for_name (name, current_namespace);
3378 if (BINDING_VALUE (bindings) != NULL_TREE
3379 && (DECL_EXTERNAL (BINDING_VALUE (bindings))
3380 || TREE_PUBLIC (BINDING_VALUE (bindings))))
3381 decl = BINDING_VALUE (bindings);
3386 /* If different sort of thing, we already gave an error. */
3387 && TREE_CODE (decl) == TREE_CODE (x)
3388 && ! comptypes (TREE_TYPE (x), TREE_TYPE (decl), 1))
3390 cp_pedwarn ("type mismatch with previous external decl", x);
3391 cp_pedwarn_at ("previous external decl of `%#D'", decl);
3395 /* This name is new in its binding level.
3396 Install the new declaration and return it. */
3397 if (b == global_binding_level)
3399 /* Install a global value. */
3400 tree bindings = binding_for_name (name, current_namespace);
3402 /* If the first global decl has external linkage,
3403 warn if we later see static one. */
3404 if (BINDING_VALUE (bindings) == NULL_TREE && TREE_PUBLIC (x))
3405 TREE_PUBLIC (name) = 1;
3407 /* Don't install an artificial TYPE_DECL if we already have
3408 another _DECL with that name. */
3409 if (TREE_CODE (x) != TYPE_DECL
3411 || ! DECL_ARTIFICIAL (x))
3413 if (TREE_CODE (x) == FUNCTION_DECL)
3414 my_friendly_assert ((BINDING_VALUE (bindings) == NULL_TREE)
3415 || BINDING_VALUE (bindings) == x, 378);
3416 BINDING_VALUE (bindings) = x;
3419 /* Don't forget if the function was used via an implicit decl. */
3420 if (IDENTIFIER_IMPLICIT_DECL (name)
3421 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name)))
3424 /* Don't forget if its address was taken in that way. */
3425 if (IDENTIFIER_IMPLICIT_DECL (name)
3426 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name)))
3427 TREE_ADDRESSABLE (x) = 1;
3429 /* Warn about mismatches against previous implicit decl. */
3430 if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE
3431 /* If this real decl matches the implicit, don't complain. */
3432 && ! (TREE_CODE (x) == FUNCTION_DECL
3433 && TREE_TYPE (TREE_TYPE (x)) == integer_type_node))
3435 ("`%D' was previously implicitly declared to return `int'", x);
3437 /* If new decl is `static' and an `extern' was seen previously,
3439 if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t))
3440 warn_extern_redeclared_static (x, t);
3444 /* Here to install a non-global value. */
3445 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
3446 tree oldglobal = binding_for_name (name, current_namespace);
3448 /* Don't install an artificial TYPE_DECL if we already have
3449 another _DECL with that name. */
3450 if (TREE_CODE (x) != TYPE_DECL
3452 || ! DECL_ARTIFICIAL (x))
3454 b->shadowed = tree_cons (name, oldlocal, b->shadowed);
3455 IDENTIFIER_LOCAL_VALUE (name) = x;
3458 /* If this is a TYPE_DECL, push it into the type value slot. */
3459 if (TREE_CODE (x) == TYPE_DECL)
3460 set_identifier_type_value_with_scope (name, TREE_TYPE (x), b);
3462 /* Clear out any TYPE_DECL shadowed by a namespace so that
3463 we won't think this is a type. The C struct hack doesn't
3464 go through namespaces. */
3465 if (TREE_CODE (x) == NAMESPACE_DECL)
3466 set_identifier_type_value_with_scope (name, NULL_TREE, b);
3468 /* If this is an extern function declaration, see if we
3469 have a global definition or declaration for the function. */
3470 if (oldlocal == NULL_TREE
3471 && DECL_EXTERNAL (x)
3472 && BINDING_VALUE (oldglobal) != NULL_TREE
3473 && TREE_CODE (x) == FUNCTION_DECL
3474 && TREE_CODE (BINDING_VALUE (oldglobal)) == FUNCTION_DECL)
3476 /* We have one. Their types must agree. */
3477 if (decls_match (x, BINDING_VALUE (oldglobal)))
3481 cp_warning ("extern declaration of `%#D' doesn't match", x);
3482 cp_warning_at ("global declaration `%#D'", BINDING_VALUE (oldglobal));
3485 /* If we have a local external declaration,
3486 and no file-scope declaration has yet been seen,
3487 then if we later have a file-scope decl it must not be static. */
3488 if (oldlocal == NULL_TREE
3489 && BINDING_VALUE (oldglobal) == NULL_TREE
3490 && DECL_EXTERNAL (x)
3493 TREE_PUBLIC (name) = 1;
3496 if (DECL_FROM_INLINE (x))
3497 /* Inline decls shadow nothing. */;
3499 /* Warn if shadowing an argument at the top level of the body. */
3500 else if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x)
3501 && TREE_CODE (oldlocal) == PARM_DECL
3502 && TREE_CODE (x) != PARM_DECL)
3504 /* Go to where the parms should be and see if we
3506 struct binding_level *b = current_binding_level->level_chain;
3512 if (b->parm_flag == 1)
3513 cp_error ("declaration of `%#D' shadows a parameter", name);
3515 else if (warn_shadow && oldlocal != NULL_TREE && b->is_for_scope
3516 && !DECL_DEAD_FOR_LOCAL (oldlocal))
3518 warning ("variable `%s' shadows local",
3519 IDENTIFIER_POINTER (name));
3520 cp_warning_at (" this is the shadowed declaration", oldlocal);
3522 /* Maybe warn if shadowing something else. */
3523 else if (warn_shadow && !DECL_EXTERNAL (x)
3524 /* No shadow warnings for internally generated vars. */
3525 && ! DECL_ARTIFICIAL (x)
3526 /* No shadow warnings for vars made for inlining. */
3527 && ! DECL_FROM_INLINE (x))
3529 char *warnstring = NULL;
3531 if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL)
3532 warnstring = "declaration of `%s' shadows a parameter";
3533 else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE
3534 && current_class_ptr
3535 && !TREE_STATIC (name))
3536 warnstring = "declaration of `%s' shadows a member of `this'";
3537 else if (oldlocal != NULL_TREE)
3538 warnstring = "declaration of `%s' shadows previous local";
3539 else if (BINDING_VALUE (oldglobal) != NULL_TREE)
3540 /* XXX shadow warnings in outer-more namespaces */
3541 warnstring = "declaration of `%s' shadows global declaration";
3544 warning (warnstring, IDENTIFIER_POINTER (name));
3548 if (TREE_CODE (x) == FUNCTION_DECL)
3549 check_default_args (x);
3551 /* Keep count of variables in this level with incomplete type. */
3552 if (TREE_CODE (x) == VAR_DECL
3553 && TREE_TYPE (x) != error_mark_node
3554 && ((TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE
3555 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE))
3556 /* RTTI TD entries are created while defining the type_info. */
3557 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x))
3558 && TYPE_BEING_DEFINED (TREE_TYPE (x)))))
3559 b->incomplete = tree_cons (NULL_TREE, x, b->incomplete);
3562 /* Put decls on list in reverse order.
3563 We will reverse them later if necessary. */
3564 TREE_CHAIN (x) = b->names;
3566 if (! (b != global_binding_level || TREE_PERMANENT (x)))
3567 my_friendly_abort (124);
3572 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3573 caller to set DECL_CONTEXT properly. */
3576 pushdecl_with_scope (x, level)
3578 struct binding_level *level;
3580 register struct binding_level *b;
3581 tree function_decl = current_function_decl;
3583 current_function_decl = NULL_TREE;
3584 if (level->parm_flag == 2)
3586 b = class_binding_level;
3587 class_binding_level = level;
3588 pushdecl_class_level (x);
3589 class_binding_level = b;
3593 b = current_binding_level;
3594 current_binding_level = level;
3596 current_binding_level = b;
3598 current_function_decl = function_decl;
3602 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3606 pushdecl_top_level (x)
3609 register struct binding_level *b = inner_binding_level;
3610 register tree t = pushdecl_with_scope (x, global_binding_level);
3612 /* Now, the type_shadowed stack may screw us. Munge it so it does
3614 if (TREE_CODE (x) == TYPE_DECL)
3616 tree name = DECL_NAME (x);
3618 tree *ptr = (tree *)0;
3619 for (; b != global_binding_level; b = b->level_chain)
3621 tree shadowed = b->type_shadowed;
3622 for (; shadowed; shadowed = TREE_CHAIN (shadowed))
3623 if (TREE_PURPOSE (shadowed) == name)
3625 ptr = &TREE_VALUE (shadowed);
3626 /* Can't break out of the loop here because sometimes
3627 a binding level will have duplicate bindings for
3628 PT names. It's gross, but I haven't time to fix it. */
3631 newval = TREE_TYPE (x);
3632 if (ptr == (tree *)0)
3634 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3635 up here if this is changed to an assertion. --KR */
3636 SET_IDENTIFIER_TYPE_VALUE (name, newval);
3646 /* Like push_overloaded_decl, only it places X in GLOBAL_BINDING_LEVEL,
3650 push_overloaded_decl_top_level (x, forget)
3654 struct binding_level *b = current_binding_level;
3656 current_binding_level = global_binding_level;
3657 push_overloaded_decl (x, forget);
3658 current_binding_level = b;
3661 /* Make the declaration of X appear in CLASS scope. */
3664 pushdecl_class_level (x)
3667 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3668 scope looks for the pre-mangled name. */
3669 register tree name = DECL_NAME (x);
3673 if (TYPE_BEING_DEFINED (current_class_type))
3675 /* Check for inconsistent use of this name in the class body.
3676 Types, enums, and static vars are checked here; other
3677 members are checked in finish_struct. */
3678 tree icv = IDENTIFIER_CLASS_VALUE (name);
3681 /* Don't complain about inherited names. */
3682 && id_in_current_class (name)
3683 /* Or shadowed tags. */
3684 && !(TREE_CODE (icv) == TYPE_DECL
3685 && DECL_CONTEXT (icv) == current_class_type))
3687 cp_error ("declaration of identifier `%D' as `%#D'", name, x);
3688 cp_error_at ("conflicts with previous use in class as `%#D'",
3693 push_class_level_binding (name, x);
3694 if (TREE_CODE (x) == TYPE_DECL)
3696 set_identifier_type_value (name, TREE_TYPE (x));
3703 /* This function is used to push the mangled decls for nested types into
3704 the appropriate scope. Previously pushdecl_top_level was used, but that
3705 is incorrect for members of local classes. */
3708 pushdecl_nonclass_level (x)
3711 struct binding_level *b = current_binding_level;
3713 my_friendly_assert (b->parm_flag != 2, 180);
3716 /* Get out of template binding levels */
3717 while (b->pseudo_global)
3721 pushdecl_with_scope (x, b);
3725 /* Make the declaration(s) of X appear in CLASS scope
3726 under the name NAME. */
3729 push_class_level_binding (name, x)
3733 /* The class_binding_level will be NULL if x is a template
3734 parameter name in a member template. */
3735 if (!class_binding_level)
3738 if (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3739 && purpose_member (name, class_binding_level->class_shadowed))
3742 maybe_push_cache_obstack ();
3743 class_binding_level->class_shadowed
3744 = tree_cons (name, IDENTIFIER_CLASS_VALUE (name),
3745 class_binding_level->class_shadowed);
3747 IDENTIFIER_CLASS_VALUE (name) = x;
3748 obstack_ptr_grow (&decl_obstack, x);
3751 /* Tell caller how to interpret a TREE_LIST which contains
3752 chains of FUNCTION_DECLS. */
3755 overloaded_globals_p (list)
3758 my_friendly_assert (TREE_CODE (list) == TREE_LIST, 142);
3760 /* Don't commit caller to seeing them as globals. */
3761 if (TREE_NONLOCAL_FLAG (list))
3763 /* Do commit caller to not seeing them as globals. */
3764 if (TREE_CODE (TREE_VALUE (list)) == TREE_LIST)
3766 /* Do commit caller to seeing them as globals. */
3770 /* DECL is a FUNCTION_DECL which may have other definitions already in
3771 place. We get around this by making the value of the identifier point
3772 to a list of all the things that want to be referenced by that name. It
3773 is then up to the users of that name to decide what to do with that
3776 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3777 slot. It is dealt with the same way.
3779 The value returned may be a previous declaration if we guessed wrong
3780 about what language DECL should belong to (C or C++). Otherwise,
3781 it's always DECL (and never something that's not a _DECL). */
3784 push_overloaded_decl (decl, forgettable)
3788 tree orig_name = DECL_NAME (decl);
3790 int doing_global = (global_bindings_p () || ! forgettable);
3794 old = IDENTIFIER_NAMESPACE_VALUE (orig_name);
3795 if (old && TREE_CODE (old) == FUNCTION_DECL
3796 && DECL_ARTIFICIAL (old)
3797 && (DECL_BUILT_IN (old) || DECL_BUILT_IN_NONANSI (old)))
3799 if (duplicate_decls (decl, old))
3806 old = IDENTIFIER_LOCAL_VALUE (orig_name);
3808 if (! purpose_member (orig_name, current_binding_level->shadowed))
3810 current_binding_level->shadowed
3811 = tree_cons (orig_name, old, current_binding_level->shadowed);
3818 if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old))
3820 tree t = TREE_TYPE (old);
3821 if (IS_AGGR_TYPE (t) && warn_shadow
3822 && (! DECL_IN_SYSTEM_HEADER (decl)
3823 || ! DECL_IN_SYSTEM_HEADER (old)))
3824 cp_warning ("`%#D' hides constructor for `%#T'", decl, t);
3827 else if (is_overloaded_fn (old))
3831 for (tmp = get_first_fn (old); tmp; tmp = DECL_CHAIN (tmp))
3832 if (decl == tmp || duplicate_decls (decl, tmp))
3837 cp_error_at ("previous non-function declaration `%#D'", old);
3838 cp_error ("conflicts with function declaration `%#D'", decl);
3843 if (old || TREE_CODE (decl) == TEMPLATE_DECL)
3845 if (old && is_overloaded_fn (old))
3846 DECL_CHAIN (decl) = get_first_fn (old);
3848 DECL_CHAIN (decl) = NULL_TREE;
3849 old = tree_cons (orig_name, decl, NULL_TREE);
3850 TREE_TYPE (old) = unknown_type_node;
3853 /* orig_name is not ambiguous. */
3857 IDENTIFIER_NAMESPACE_VALUE (orig_name) = old;
3859 IDENTIFIER_LOCAL_VALUE (orig_name) = old;
3864 /* Generate an implicit declaration for identifier FUNCTIONID
3865 as a function of type int (). Print a warning if appropriate. */
3868 implicitly_declare (functionid)
3872 int temp = allocation_temporary_p ();
3874 push_obstacks_nochange ();
3876 /* Save the decl permanently so we can warn if definition follows.
3877 In ANSI C, warn_implicit is usually false, so the saves little space.
3878 But in C++, it's usually true, hence the extra code. */
3879 if (temp && (! warn_implicit || toplevel_bindings_p ()))
3880 end_temporary_allocation ();
3882 /* We used to reuse an old implicit decl here,
3883 but this loses with inline functions because it can clobber
3884 the saved decl chains. */
3885 decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type);
3887 DECL_EXTERNAL (decl) = 1;
3888 TREE_PUBLIC (decl) = 1;
3890 /* ANSI standard says implicit declarations are in the innermost block.
3891 So we record the decl in the standard fashion. */
3893 rest_of_decl_compilation (decl, NULL_PTR, 0, 0);
3896 /* Only one warning per identifier. */
3897 && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE)
3899 cp_pedwarn ("implicit declaration of function `%#D'", decl);
3902 SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl);
3909 /* Return zero if the declaration NEWDECL is valid
3910 when the declaration OLDDECL (assumed to be for the same name)
3911 has already been seen.
3912 Otherwise return an error message format string with a %s
3913 where the identifier should go. */
3916 redeclaration_error_message (newdecl, olddecl)
3917 tree newdecl, olddecl;
3919 if (TREE_CODE (newdecl) == TYPE_DECL)
3921 /* Because C++ can put things into name space for free,
3922 constructs like "typedef struct foo { ... } foo"
3923 would look like an erroneous redeclaration. */
3924 if (comptypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl), 0))
3927 return "redefinition of `%#D'";
3929 else if (TREE_CODE (newdecl) == FUNCTION_DECL)
3931 /* If this is a pure function, its olddecl will actually be
3932 the original initialization to `0' (which we force to call
3933 abort()). Don't complain about redefinition in this case. */
3934 if (DECL_LANG_SPECIFIC (olddecl) && DECL_ABSTRACT_VIRTUAL_P (olddecl))
3937 /* We'll complain about linkage mismatches in
3938 warn_extern_redeclared_static. */
3940 /* defining the same name twice is no good. */
3941 if (DECL_INITIAL (olddecl) != NULL_TREE
3942 && DECL_INITIAL (newdecl) != NULL_TREE)
3944 if (DECL_NAME (olddecl) == NULL_TREE)
3945 return "`%#D' not declared in class";
3947 return "redefinition of `%#D'";
3951 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
3953 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
3954 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl))
3955 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)))
3956 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL
3957 && TYPE_SIZE (TREE_TYPE (newdecl))
3958 && TYPE_SIZE (TREE_TYPE (olddecl))))
3959 return "redefinition of `%#D'";
3962 else if (toplevel_bindings_p ())
3964 /* Objects declared at top level: */
3965 /* If at least one is a reference, it's ok. */
3966 if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
3968 /* Reject two definitions. */
3969 return "redefinition of `%#D'";
3973 /* Objects declared with block scope: */
3974 /* Reject two definitions, and reject a definition
3975 together with an external reference. */
3976 if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
3977 return "redeclaration of `%#D'";
3982 /* Get the LABEL_DECL corresponding to identifier ID as a label.
3983 Create one if none exists so far for the current function.
3984 This function is called for both label definitions and label references. */
3990 register tree decl = IDENTIFIER_LABEL_VALUE (id);
3992 if (current_function_decl == NULL_TREE)
3994 error ("label `%s' referenced outside of any function",
3995 IDENTIFIER_POINTER (id));
3999 if ((decl == NULL_TREE
4000 || DECL_SOURCE_LINE (decl) == 0)
4001 && (named_label_uses == NULL
4002 || named_label_uses->names_in_scope != current_binding_level->names
4003 || named_label_uses->label_decl != decl))
4005 struct named_label_list *new_ent;
4007 = (struct named_label_list*)oballoc (sizeof (struct named_label_list));
4008 new_ent->label_decl = decl;
4009 new_ent->names_in_scope = current_binding_level->names;
4010 new_ent->binding_level = current_binding_level;
4011 new_ent->lineno_o_goto = lineno;
4012 new_ent->filename_o_goto = input_filename;
4013 new_ent->next = named_label_uses;
4014 named_label_uses = new_ent;
4017 /* Use a label already defined or ref'd with this name. */
4018 if (decl != NULL_TREE)
4020 /* But not if it is inherited and wasn't declared to be inheritable. */
4021 if (DECL_CONTEXT (decl) != current_function_decl
4022 && ! C_DECLARED_LABEL_FLAG (decl))
4023 return shadow_label (id);
4027 decl = build_decl (LABEL_DECL, id, void_type_node);
4029 /* Make sure every label has an rtx. */
4032 /* A label not explicitly declared must be local to where it's ref'd. */
4033 DECL_CONTEXT (decl) = current_function_decl;
4035 DECL_MODE (decl) = VOIDmode;
4037 /* Say where one reference is to the label,
4038 for the sake of the error if it is not defined. */
4039 DECL_SOURCE_LINE (decl) = lineno;
4040 DECL_SOURCE_FILE (decl) = input_filename;
4042 SET_IDENTIFIER_LABEL_VALUE (id, decl);
4044 named_labels = tree_cons (NULL_TREE, decl, named_labels);
4045 named_label_uses->label_decl = decl;
4050 /* Make a label named NAME in the current function,
4051 shadowing silently any that may be inherited from containing functions
4052 or containing scopes.
4054 Note that valid use, if the label being shadowed
4055 comes from another scope in the same function,
4056 requires calling declare_nonlocal_label right away. */
4062 register tree decl = IDENTIFIER_LABEL_VALUE (name);
4064 if (decl != NULL_TREE)
4066 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
4067 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
4068 SET_IDENTIFIER_LABEL_VALUE (decl, NULL_TREE);
4071 return lookup_label (name);
4074 /* Define a label, specifying the location in the source file.
4075 Return the LABEL_DECL node for the label, if the definition is valid.
4076 Otherwise return 0. */
4079 define_label (filename, line, name)
4086 if (minimal_parse_mode)
4088 push_obstacks (&permanent_obstack, &permanent_obstack);
4089 decl = build_decl (LABEL_DECL, name, void_type_node);
4091 DECL_SOURCE_LINE (decl) = line;
4092 DECL_SOURCE_FILE (decl) = filename;
4097 decl = lookup_label (name);
4099 /* After labels, make any new cleanups go into their
4100 own new (temporary) binding contour. */
4101 current_binding_level->more_cleanups_ok = 0;
4103 /* If label with this name is known from an outer context, shadow it. */
4104 if (decl != NULL_TREE && DECL_CONTEXT (decl) != current_function_decl)
4106 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
4107 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
4108 decl = lookup_label (name);
4111 if (name == get_identifier ("wchar_t"))
4112 cp_pedwarn ("label named wchar_t");
4114 if (DECL_INITIAL (decl) != NULL_TREE)
4116 cp_error ("duplicate label `%D'", decl);
4121 struct named_label_list *uses, *prev;
4124 /* Mark label as having been defined. */
4125 DECL_INITIAL (decl) = error_mark_node;
4126 /* Say where in the source. */
4127 DECL_SOURCE_FILE (decl) = filename;
4128 DECL_SOURCE_LINE (decl) = line;
4131 uses = named_label_uses;
4132 while (uses != NULL)
4133 if (uses->label_decl == decl)
4135 struct binding_level *b = current_binding_level;
4138 tree new_decls = b->names;
4139 tree old_decls = (b == uses->binding_level)
4140 ? uses->names_in_scope : NULL_TREE;
4141 while (new_decls != old_decls)
4143 if (TREE_CODE (new_decls) == VAR_DECL
4144 /* Don't complain about crossing initialization
4145 of internal entities. They can't be accessed,
4146 and they should be cleaned up
4147 by the time we get to the label. */
4148 && ! DECL_ARTIFICIAL (new_decls)
4149 && ((DECL_INITIAL (new_decls) != NULL_TREE
4150 && DECL_INITIAL (new_decls) != error_mark_node)
4151 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
4155 cp_error ("jump to label `%D'", decl);
4156 error_with_file_and_line (uses->filename_o_goto,
4157 uses->lineno_o_goto,
4161 cp_error_at (" crosses initialization of `%#D'",
4164 new_decls = TREE_CHAIN (new_decls);
4166 if (b == uses->binding_level)
4172 prev->next = uses->next;
4174 named_label_uses = uses->next;
4183 current_function_return_value = NULL_TREE;
4190 struct binding_level *level;
4191 struct cp_switch *next;
4194 static struct cp_switch *switch_stack;
4200 = (struct cp_switch *) oballoc (sizeof (struct cp_switch));
4201 p->level = current_binding_level;
4202 p->next = switch_stack;
4209 switch_stack = switch_stack->next;
4212 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4213 /* XXX Note decl is never actually used. (bpk) */
4216 define_case_label (decl)
4219 tree cleanup = last_cleanup_this_contour ();
4220 struct binding_level *b = current_binding_level;
4225 static int explained = 0;
4226 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup));
4227 warning ("where case label appears here");
4230 warning ("(enclose actions of previous case statements requiring");
4231 warning ("destructors in their own binding contours.)");
4236 for (; b && b != switch_stack->level; b = b->level_chain)
4238 tree new_decls = b->names;
4239 for (; new_decls; new_decls = TREE_CHAIN (new_decls))
4241 if (TREE_CODE (new_decls) == VAR_DECL
4242 /* Don't complain about crossing initialization
4243 of internal entities. They can't be accessed,
4244 and they should be cleaned up
4245 by the time we get to the label. */
4246 && ! DECL_ARTIFICIAL (new_decls)
4247 && ((DECL_INITIAL (new_decls) != NULL_TREE
4248 && DECL_INITIAL (new_decls) != error_mark_node)
4249 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
4252 error ("jump to case label");
4254 cp_error_at (" crosses initialization of `%#D'",
4260 /* After labels, make any new cleanups go into their
4261 own new (temporary) binding contour. */
4263 current_binding_level->more_cleanups_ok = 0;
4264 current_function_return_value = NULL_TREE;
4267 /* Return the list of declarations of the current level.
4268 Note that this list is in reverse order unless/until
4269 you nreverse it; and when you do nreverse it, you must
4270 store the result back using `storedecls' or you will lose. */
4275 return current_binding_level->names;
4278 /* Return the list of type-tags (for structs, etc) of the current level. */
4283 return current_binding_level->tags;
4286 /* Store the list of declarations of the current level.
4287 This is done for the parameter declarations of a function being defined,
4288 after they are modified in the light of any missing parameters. */
4294 current_binding_level->names = decls;
4297 /* Similarly, store the list of tags of the current level. */
4303 current_binding_level->tags = tags;
4306 /* Given NAME, an IDENTIFIER_NODE,
4307 return the structure (or union or enum) definition for that name.
4308 Searches binding levels from BINDING_LEVEL up to the global level.
4309 If THISLEVEL_ONLY is nonzero, searches only the specified context
4310 (but skips any tag-transparent contexts to find one that is
4311 meaningful for tags).
4312 FORM says which kind of type the caller wants;
4313 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4314 If the wrong kind of type is found, and it's not a template, an error is
4318 lookup_tag (form, name, binding_level, thislevel_only)
4319 enum tree_code form;
4321 struct binding_level *binding_level;
4324 register struct binding_level *level;
4326 for (level = binding_level; level; level = level->level_chain)
4329 if (ANON_AGGRNAME_P (name))
4330 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4332 /* There's no need for error checking here, because
4333 anon names are unique throughout the compilation. */
4334 if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name)
4335 return TREE_VALUE (tail);
4338 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4340 if (TREE_PURPOSE (tail) == name)
4342 enum tree_code code = TREE_CODE (TREE_VALUE (tail));
4343 /* Should tighten this up; it'll probably permit
4344 UNION_TYPE and a struct template, for example. */
4346 && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL))
4348 /* Definition isn't the kind we were looking for. */
4349 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail),
4353 return TREE_VALUE (tail);
4356 if (thislevel_only && ! level->tag_transparent)
4358 if (level->pseudo_global)
4361 tree t = IDENTIFIER_NAMESPACE_VALUE (name);
4362 if (t && TREE_CODE (t) == TEMPLATE_DECL
4363 && TREE_CODE (DECL_TEMPLATE_RESULT (t)) == TYPE_DECL)
4364 return TREE_TYPE (t);
4368 if (current_class_type && level->level_chain == global_binding_level)
4370 /* Try looking in this class's tags before heading into
4371 global binding level. */
4372 tree context = current_class_type;
4375 switch (TREE_CODE_CLASS (TREE_CODE (context)))
4379 these_tags = CLASSTYPE_TAGS (context);
4380 if (ANON_AGGRNAME_P (name))
4383 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags))
4385 return TREE_VALUE (tail);
4386 these_tags = TREE_CHAIN (these_tags);
4391 if (TREE_PURPOSE (these_tags) == name)
4393 if (TREE_CODE (TREE_VALUE (these_tags)) != form)
4395 cp_error ("`%#D' redeclared as %C in class scope",
4396 TREE_VALUE (tail), form);
4399 return TREE_VALUE (tail);
4401 these_tags = TREE_CHAIN (these_tags);
4403 /* If this type is not yet complete, then don't
4404 look at its context. */
4405 if (TYPE_SIZE (context) == NULL_TREE)
4407 /* Go to next enclosing type, if any. */
4408 context = DECL_CONTEXT (TYPE_MAIN_DECL (context));
4411 context = DECL_CONTEXT (context);
4414 my_friendly_abort (10);
4427 set_current_level_tags_transparency (tags_transparent)
4428 int tags_transparent;
4430 current_binding_level->tag_transparent = tags_transparent;
4434 /* Given a type, find the tag that was defined for it and return the tag name.
4435 Otherwise return 0. However, the value can never be 0
4436 in the cases in which this is used.
4438 C++: If NAME is non-zero, this is the new name to install. This is
4439 done when replacing anonymous tags with real tag names. */
4442 lookup_tag_reverse (type, name)
4446 register struct binding_level *level;
4448 for (level = current_binding_level; level; level = level->level_chain)
4451 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4453 if (TREE_VALUE (tail) == type)
4456 TREE_PURPOSE (tail) = name;
4457 return TREE_PURPOSE (tail);
4464 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4465 Return the type value, or NULL_TREE if not found. */
4468 lookup_nested_type (type, context)
4472 if (context == NULL_TREE)
4476 switch (TREE_CODE (context))
4480 tree ctype = TREE_TYPE (context);
4481 tree match = value_member (type, CLASSTYPE_TAGS (ctype));
4483 return TREE_VALUE (match);
4484 context = DECL_CONTEXT (context);
4486 /* When we have a nested class whose member functions have
4487 local types (e.g., a set of enums), we'll arrive here
4488 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4489 the enclosing class. Instead, we want to make sure we
4490 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4491 if (context && TREE_CODE (context) == RECORD_TYPE)
4492 context = TREE_CHAIN (context);
4496 if (TYPE_NAME (type) && TYPE_IDENTIFIER (type))
4497 return lookup_name (TYPE_IDENTIFIER (type), 1);
4500 my_friendly_abort (12);
4506 /* Look up NAME in the NAMESPACE. */
4509 lookup_namespace_name (namespace, name)
4510 tree namespace, name;
4514 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL, 370);
4515 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 373);
4517 val = qualified_lookup_using_namespace (name, namespace);
4520 cp_error ("`%D' undeclared in namespace `%D'", name, namespace);
4521 return error_mark_node;
4523 struct binding_level *b = (struct binding_level *)NAMESPACE_LEVEL (namespace);
4526 /* This searches just one level. */
4529 for (x = b->names; x; x = TREE_CHAIN (x))
4530 if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name)
4534 /* This searches all levels. */
4535 for (; b && !x; b = b->level_chain)
4537 for (x = b->names; x; x = TREE_CHAIN (x))
4538 if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name)
4547 make_typename_type (context, name)
4553 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
4554 name = TYPE_IDENTIFIER (name);
4555 else if (TREE_CODE (name) == TYPE_DECL)
4556 name = DECL_NAME (name);
4560 if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
4562 name = TREE_OPERAND (name, 0);
4563 if (TREE_CODE (name) == TEMPLATE_DECL)
4564 name = TREE_OPERAND (fullname, 0) = DECL_NAME (name);
4566 if (TREE_CODE (name) != IDENTIFIER_NODE)
4567 my_friendly_abort (2000);
4569 if (! uses_template_parms (context)
4570 || context == current_class_type)
4572 if (TREE_CODE (fullname) == TEMPLATE_ID_EXPR)
4574 if (IS_AGGR_TYPE (context))
4575 t = lookup_field (context, name, 0, 0);
4579 if (t == NULL_TREE || TREE_CODE (t) != TEMPLATE_DECL
4580 || TREE_CODE (DECL_RESULT (t)) != TYPE_DECL)
4582 cp_error ("no class template named `%#T' in `%#T'",
4584 return error_mark_node;
4587 return lookup_template_class (t, TREE_OPERAND (fullname, 1),
4588 NULL_TREE, context);
4592 if (IS_AGGR_TYPE (context))
4593 t = lookup_field (context, name, 0, 1);
4599 cp_error ("no type named `%#T' in `%#T'", name, context);
4600 return error_mark_node;
4603 return TREE_TYPE (t);
4607 if (processing_template_decl)
4608 push_obstacks (&permanent_obstack, &permanent_obstack);
4609 t = make_lang_type (TYPENAME_TYPE);
4610 TYPENAME_TYPE_FULLNAME (t) = fullname;
4611 d = build_decl (TYPE_DECL, name, t);
4612 if (processing_template_decl)
4615 TYPE_CONTEXT (t) = context;
4616 TYPE_NAME (TREE_TYPE (d)) = d;
4617 TYPE_STUB_DECL (TREE_TYPE (d)) = d;
4618 DECL_CONTEXT (d) = context;
4619 CLASSTYPE_GOT_SEMICOLON (t) = 1;
4624 /* Look up NAME in the current binding level and its superiors in the
4625 namespace of variables, functions and typedefs. Return a ..._DECL
4626 node of some kind representing its definition if there is only one
4627 such declaration, or return a TREE_LIST with all the overloaded
4628 definitions if there are many, or return 0 if it is undefined.
4630 If PREFER_TYPE is > 0, we prefer TYPE_DECLs.
4631 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4632 Otherwise we prefer non-TYPE_DECLs.
4634 If NONCLASS is non-zero, we don't look for the NAME in class scope,
4635 using IDENTIFIER_CLASS_VALUE. */
4638 lookup_name_real (name, prefer_type, nonclass)
4640 int prefer_type, nonclass;
4644 tree from_obj = NULL_TREE;
4645 tree locval, classval;
4647 if (prefer_type == -2)
4649 extern int looking_for_typename;
4650 tree type = NULL_TREE;
4653 prefer_type = looking_for_typename;
4655 /* std:: becomes :: for now. */
4656 if (got_scope == std_node)
4657 got_scope = void_type_node;
4661 else if (got_object != error_mark_node)
4666 if (type == error_mark_node)
4667 return error_mark_node;
4668 if (TREE_CODE (type) == TYPENAME_TYPE && TREE_TYPE (type))
4669 type = TREE_TYPE (type);
4671 type = complete_type (type);
4673 if (TREE_CODE (type) == VOID_TYPE)
4674 val = IDENTIFIER_GLOBAL_VALUE (name);
4675 else if (TREE_CODE (type) == NAMESPACE_DECL)
4677 val = NAMESPACE_BINDING (name, type);
4679 else if (! IS_AGGR_TYPE (type)
4680 || TREE_CODE (type) == TEMPLATE_TYPE_PARM
4681 || TREE_CODE (type) == TEMPLATE_TEMPLATE_PARM
4682 || TREE_CODE (type) == TYPENAME_TYPE)
4683 /* Someone else will give an error about this if needed. */
4685 else if (TYPE_BEING_DEFINED (type))
4687 val = IDENTIFIER_CLASS_VALUE (name);
4688 if (val && DECL_CONTEXT (val) != type)
4690 struct binding_level *b = class_binding_level;
4691 for (val = NULL_TREE; b; b = b->level_chain)
4693 tree t = purpose_member (name, b->class_shadowed);
4694 if (t && TREE_VALUE (t)
4695 && DECL_CONTEXT (TREE_VALUE (t)) == type)
4697 val = TREE_VALUE (t);
4702 if (val == NULL_TREE)
4703 val = lookup_field (type, name, 0, 1);
4705 else if (type == current_class_type)
4706 val = IDENTIFIER_CLASS_VALUE (name);
4708 val = lookup_field (type, name, 0, prefer_type);
4715 else if (got_object && val)
4719 locval = classval = NULL_TREE;
4721 if (current_binding_level != global_binding_level
4722 && IDENTIFIER_LOCAL_VALUE (name))
4723 locval = IDENTIFIER_LOCAL_VALUE (name);
4725 /* In C++ class fields are between local and global scope,
4726 just before the global scope. */
4727 if (current_class_type && ! nonclass)
4729 classval = IDENTIFIER_CLASS_VALUE (name);
4730 if (classval == NULL_TREE && TYPE_BEING_DEFINED (current_class_type))
4731 /* Try to find values from base classes if we are presently
4732 defining a type. We are presently only interested in
4734 classval = lookup_field (current_class_type, name, 0, 1);
4736 /* yylex() calls this with -2, since we should never start digging for
4737 the nested name at the point where we haven't even, for example,
4738 created the COMPONENT_REF or anything like that. */
4739 if (classval == NULL_TREE)
4740 classval = lookup_nested_field (name, ! yylex);
4742 /* Add implicit 'typename' to types from template bases. lookup_field
4743 will do this for us. */
4744 if (processing_template_decl
4745 && classval && TREE_CODE (classval) == TYPE_DECL
4746 && DECL_CONTEXT (classval) != current_class_type
4747 && uses_template_parms (current_class_type)
4748 && ! DECL_ARTIFICIAL (classval))
4749 classval = lookup_field (current_class_type, name, 0, 1);
4752 if (locval && classval)
4754 if (current_scope () == current_function_decl
4755 && ! hack_decl_function_context (current_function_decl))
4756 /* Not in a nested function. */
4760 /* This is incredibly horrible. The whole concept of
4761 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
4762 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
4764 tree lctx = hack_decl_function_context (locval);
4765 tree cctx = hack_decl_function_context (classval);
4767 if (lctx == current_scope ())
4769 else if (lctx == cctx)
4772 /* I don't know which is right; let's just guess for now. */
4782 /* unscoped lookup of a global, iterate over namespaces,
4783 considering using namespace statements */
4785 tree scope = current_namespace;
4788 binding = binding_for_name (name, scope);
4789 val = BINDING_VALUE (binding);
4790 val = lookup_using_namespace (name, val, current_namespace, scope);
4791 if (scope == global_namespace)
4793 scope = DECL_NAMESPACE (scope);
4801 /* This should only warn about types used in qualified-ids. */
4802 if (from_obj && from_obj != val)
4804 if (looking_for_typename && TREE_CODE (from_obj) == TYPE_DECL
4805 && TREE_CODE (val) == TYPE_DECL
4806 && TREE_TYPE (from_obj) != TREE_TYPE (val))
4808 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
4809 name, got_object, TREE_TYPE (from_obj));
4810 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
4817 if ((TREE_CODE (val) == TEMPLATE_DECL && looking_for_template)
4818 || TREE_CODE (val) == TYPE_DECL || prefer_type <= 0)
4820 else if (IDENTIFIER_HAS_TYPE_VALUE (name))
4821 val = TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name));
4822 else if (TREE_TYPE (val) == error_mark_node)
4823 val = error_mark_node;
4832 lookup_name_nonclass (name)
4835 return lookup_name_real (name, 0, 1);
4839 lookup_name (name, prefer_type)
4843 return lookup_name_real (name, prefer_type, 0);
4846 /* Similar to `lookup_name' but look only at current binding level. */
4849 lookup_name_current_level (name)
4852 register tree t = NULL_TREE;
4854 if (current_binding_level == global_binding_level)
4856 t = IDENTIFIER_NAMESPACE_VALUE (name);
4858 /* extern "C" function() */
4859 if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST)
4862 else if (IDENTIFIER_LOCAL_VALUE (name) != NULL_TREE)
4864 struct binding_level *b = current_binding_level;
4867 for (t = b->names; t; t = TREE_CHAIN (t))
4868 if (DECL_NAME (t) == name || DECL_ASSEMBLER_NAME (t) == name)
4882 /* Arrange for the user to get a source line number, even when the
4883 compiler is going down in flames, so that she at least has a
4884 chance of working around problems in the compiler. We used to
4885 call error(), but that let the segmentation fault continue
4886 through; now, it's much more passive by asking them to send the
4887 maintainers mail about the problem. */
4893 signal (SIGSEGV, SIG_DFL);
4895 signal (SIGIOT, SIG_DFL);
4898 signal (SIGILL, SIG_DFL);
4901 signal (SIGABRT, SIG_DFL);
4904 signal (SIGBUS, SIG_DFL);
4906 my_friendly_abort (0);
4910 /* Unused -- brendan 970107 */
4911 /* Array for holding types considered "built-in". These types
4912 are output in the module in which `main' is defined. */
4913 static tree *builtin_type_tdescs_arr;
4914 static int builtin_type_tdescs_len, builtin_type_tdescs_max;
4917 /* Push the declarations of builtin types into the namespace.
4918 RID_INDEX, if < RID_MAX is the index of the builtin type
4919 in the array RID_POINTERS. NAME is the name used when looking
4920 up the builtin type. TYPE is the _TYPE node for the builtin type. */
4923 record_builtin_type (rid_index, name, type)
4928 tree rname = NULL_TREE, tname = NULL_TREE;
4929 tree tdecl = NULL_TREE;
4931 if ((int) rid_index < (int) RID_MAX)
4932 rname = ridpointers[(int) rid_index];
4934 tname = get_identifier (name);
4936 TYPE_BUILT_IN (type) = 1;
4940 tdecl = pushdecl (build_decl (TYPE_DECL, tname, type));
4941 set_identifier_type_value (tname, NULL_TREE);
4942 if ((int) rid_index < (int) RID_MAX)
4943 /* builtin types live in the global namespace */
4944 IDENTIFIER_GLOBAL_VALUE (tname) = tdecl;
4946 if (rname != NULL_TREE)
4948 if (tname != NULL_TREE)
4950 set_identifier_type_value (rname, NULL_TREE);
4951 IDENTIFIER_GLOBAL_VALUE (rname) = tdecl;
4955 tdecl = pushdecl (build_decl (TYPE_DECL, rname, type));
4956 set_identifier_type_value (rname, NULL_TREE);
4961 /* Push overloaded decl, in global scope, with one argument so it
4962 can be used as a callback from define_function. */
4965 push_overloaded_decl_1 (x)
4968 push_overloaded_decl (x, 0);
4975 auto_function (name, type, code)
4977 enum built_in_function code;
4979 return define_function
4980 (IDENTIFIER_POINTER (name), type, code, push_overloaded_decl_1,
4981 IDENTIFIER_POINTER (build_decl_overload (name, TYPE_ARG_TYPES (type),
4985 /* Create the predefined scalar types of C,
4986 and some nodes representing standard constants (0, 1, (void *)0).
4987 Initialize the global binding level.
4988 Make definitions for built-in primitive functions. */
4991 init_decl_processing ()
4994 register tree endlink, int_endlink, double_endlink, unsigned_endlink;
4996 /* Data type of memcpy. */
4997 tree memcpy_ftype, strlen_ftype;
4998 int wchar_type_size;
5000 tree array_domain_type;
5001 extern int flag_strict_prototype;
5002 tree vb_off_identifier = NULL_TREE;
5003 /* Function type `char *(char *, char *)' and similar ones */
5004 tree string_ftype_ptr_ptr, int_ftype_string_string;
5005 tree sizetype_endlink;
5006 tree ptr_ftype, ptr_ftype_unsigned, ptr_ftype_sizetype;
5007 tree void_ftype, void_ftype_int, void_ftype_ptr, ptr_ftype_void;
5009 /* Have to make these distinct before we try using them. */
5010 lang_name_cplusplus = get_identifier ("C++");
5011 lang_name_c = get_identifier ("C");
5012 lang_name_java = get_identifier ("Java");
5014 /* enter the global namespace */
5015 my_friendly_assert (global_namespace == NULL_TREE, 375);
5016 my_friendly_assert (current_lang_name == NULL_TREE, 375);
5017 current_lang_name = lang_name_cplusplus;
5018 push_namespace (get_identifier ("::"));
5019 global_namespace = current_namespace;
5020 current_lang_name = NULL_TREE;
5022 if (flag_strict_prototype == 2)
5025 strict_prototypes_lang_c = strict_prototypes_lang_cplusplus;
5028 strict_prototypes_lang_c = flag_strict_prototype;
5031 current_lang_name = lang_name_c;
5033 current_function_decl = NULL_TREE;
5034 named_labels = NULL_TREE;
5035 named_label_uses = NULL;
5036 current_binding_level = NULL_BINDING_LEVEL;
5037 free_binding_level = NULL_BINDING_LEVEL;
5039 #ifndef __CYGWIN32__
5040 /* Because most segmentation signals can be traced back into user
5041 code, catch them and at least give the user a chance of working
5042 around compiler bugs. */
5043 signal (SIGSEGV, signal_catch);
5045 /* We will also catch aborts in the back-end through signal_catch and
5046 give the user a chance to see where the error might be, and to defeat
5047 aborts in the back-end when there have been errors previously in their
5050 signal (SIGIOT, signal_catch);
5053 signal (SIGILL, signal_catch);
5056 signal (SIGABRT, signal_catch);
5059 signal (SIGBUS, signal_catch);
5061 #else /* ndef __CYGWIN32__ */
5062 /* Cygwin32 cannot handle catching signals other than
5063 SIGABRT yet. We hope this will cease to be the case soon. */
5065 signal (SIGABRT, signal_catch);
5067 #endif /* ndef __CYGWIN32__ */
5069 gcc_obstack_init (&decl_obstack);
5071 /* Must lay these out before anything else gets laid out. */
5072 error_mark_node = make_node (ERROR_MARK);
5073 TREE_PERMANENT (error_mark_node) = 1;
5074 TREE_TYPE (error_mark_node) = error_mark_node;
5075 error_mark_list = build_tree_list (error_mark_node, error_mark_node);
5076 TREE_TYPE (error_mark_list) = error_mark_node;
5078 /* Make the binding_level structure for global names. */
5080 global_binding_level = current_binding_level;
5082 this_identifier = get_identifier (THIS_NAME);
5083 in_charge_identifier = get_identifier (IN_CHARGE_NAME);
5084 ctor_identifier = get_identifier (CTOR_NAME);
5085 dtor_identifier = get_identifier (DTOR_NAME);
5086 pfn_identifier = get_identifier (VTABLE_PFN_NAME);
5087 index_identifier = get_identifier (VTABLE_INDEX_NAME);
5088 delta_identifier = get_identifier (VTABLE_DELTA_NAME);
5089 delta2_identifier = get_identifier (VTABLE_DELTA2_NAME);
5090 pfn_or_delta2_identifier = get_identifier ("__pfn_or_delta2");
5091 if (flag_handle_signatures)
5093 tag_identifier = get_identifier (SIGTABLE_TAG_NAME);
5094 vb_off_identifier = get_identifier (SIGTABLE_VB_OFF_NAME);
5095 vt_off_identifier = get_identifier (SIGTABLE_VT_OFF_NAME);
5098 /* Define `int' and `char' first so that dbx will output them first. */
5100 integer_type_node = make_signed_type (INT_TYPE_SIZE);
5101 record_builtin_type (RID_INT, NULL_PTR, integer_type_node);
5103 /* Define `char', which is like either `signed char' or `unsigned char'
5104 but not the same as either. */
5108 ? make_signed_type (CHAR_TYPE_SIZE)
5109 : make_unsigned_type (CHAR_TYPE_SIZE));
5110 record_builtin_type (RID_CHAR, "char", char_type_node);
5112 long_integer_type_node = make_signed_type (LONG_TYPE_SIZE);
5113 record_builtin_type (RID_LONG, "long int", long_integer_type_node);
5115 unsigned_type_node = make_unsigned_type (INT_TYPE_SIZE);
5116 record_builtin_type (RID_UNSIGNED, "unsigned int", unsigned_type_node);
5118 long_unsigned_type_node = make_unsigned_type (LONG_TYPE_SIZE);
5119 record_builtin_type (RID_MAX, "long unsigned int", long_unsigned_type_node);
5120 record_builtin_type (RID_MAX, "unsigned long", long_unsigned_type_node);
5122 long_long_integer_type_node = make_signed_type (LONG_LONG_TYPE_SIZE);
5123 record_builtin_type (RID_MAX, "long long int", long_long_integer_type_node);
5125 long_long_unsigned_type_node = make_unsigned_type (LONG_LONG_TYPE_SIZE);
5126 record_builtin_type (RID_MAX, "long long unsigned int",
5127 long_long_unsigned_type_node);
5128 record_builtin_type (RID_MAX, "long long unsigned",
5129 long_long_unsigned_type_node);
5131 short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE);
5132 record_builtin_type (RID_SHORT, "short int", short_integer_type_node);
5133 short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE);
5134 record_builtin_type (RID_MAX, "short unsigned int", short_unsigned_type_node);
5135 record_builtin_type (RID_MAX, "unsigned short", short_unsigned_type_node);
5137 /* `unsigned long' is the standard type for sizeof.
5138 Note that stddef.h uses `unsigned long',
5139 and this must agree, even if long and int are the same size. */
5141 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE))));
5144 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE)));
5146 /* Define both `signed char' and `unsigned char'. */
5147 signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE);
5148 record_builtin_type (RID_MAX, "signed char", signed_char_type_node);
5149 unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE);
5150 record_builtin_type (RID_MAX, "unsigned char", unsigned_char_type_node);
5152 /* These are types that type_for_size and type_for_mode use. */
5153 intQI_type_node = make_signed_type (GET_MODE_BITSIZE (QImode));
5154 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node));
5155 intHI_type_node = make_signed_type (GET_MODE_BITSIZE (HImode));
5156 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node));
5157 intSI_type_node = make_signed_type (GET_MODE_BITSIZE (SImode));
5158 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node));
5159 intDI_type_node = make_signed_type (GET_MODE_BITSIZE (DImode));
5160 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node));
5161 intTI_type_node = make_signed_type (GET_MODE_BITSIZE (TImode));
5162 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intTI_type_node));
5163 unsigned_intQI_type_node = make_unsigned_type (GET_MODE_BITSIZE (QImode));
5164 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node));
5165 unsigned_intHI_type_node = make_unsigned_type (GET_MODE_BITSIZE (HImode));
5166 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node));
5167 unsigned_intSI_type_node = make_unsigned_type (GET_MODE_BITSIZE (SImode));
5168 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node));
5169 unsigned_intDI_type_node = make_unsigned_type (GET_MODE_BITSIZE (DImode));
5170 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node));
5171 unsigned_intTI_type_node = make_unsigned_type (GET_MODE_BITSIZE (TImode));
5172 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intTI_type_node));
5174 float_type_node = make_node (REAL_TYPE);
5175 TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE;
5176 record_builtin_type (RID_FLOAT, NULL_PTR, float_type_node);
5177 layout_type (float_type_node);
5179 double_type_node = make_node (REAL_TYPE);
5180 if (flag_short_double)
5181 TYPE_PRECISION (double_type_node) = FLOAT_TYPE_SIZE;
5183 TYPE_PRECISION (double_type_node) = DOUBLE_TYPE_SIZE;
5184 record_builtin_type (RID_DOUBLE, NULL_PTR, double_type_node);
5185 layout_type (double_type_node);
5187 long_double_type_node = make_node (REAL_TYPE);
5188 TYPE_PRECISION (long_double_type_node) = LONG_DOUBLE_TYPE_SIZE;
5189 record_builtin_type (RID_MAX, "long double", long_double_type_node);
5190 layout_type (long_double_type_node);
5192 complex_integer_type_node = make_node (COMPLEX_TYPE);
5193 pushdecl (build_decl (TYPE_DECL, get_identifier ("complex int"),
5194 complex_integer_type_node));
5195 TREE_TYPE (complex_integer_type_node) = integer_type_node;
5196 layout_type (complex_integer_type_node);
5198 complex_float_type_node = make_node (COMPLEX_TYPE);
5199 pushdecl (build_decl (TYPE_DECL, get_identifier ("complex float"),
5200 complex_float_type_node));
5201 TREE_TYPE (complex_float_type_node) = float_type_node;
5202 layout_type (complex_float_type_node);
5204 complex_double_type_node = make_node (COMPLEX_TYPE);
5205 pushdecl (build_decl (TYPE_DECL, get_identifier ("complex double"),
5206 complex_double_type_node));
5207 TREE_TYPE (complex_double_type_node) = double_type_node;
5208 layout_type (complex_double_type_node);
5210 complex_long_double_type_node = make_node (COMPLEX_TYPE);
5211 pushdecl (build_decl (TYPE_DECL, get_identifier ("complex long double"),
5212 complex_long_double_type_node));
5213 TREE_TYPE (complex_long_double_type_node) = long_double_type_node;
5214 layout_type (complex_long_double_type_node);
5216 integer_zero_node = build_int_2 (0, 0);
5217 TREE_TYPE (integer_zero_node) = integer_type_node;
5218 integer_one_node = build_int_2 (1, 0);
5219 TREE_TYPE (integer_one_node) = integer_type_node;
5220 integer_two_node = build_int_2 (2, 0);
5221 TREE_TYPE (integer_two_node) = integer_type_node;
5222 integer_three_node = build_int_2 (3, 0);
5223 TREE_TYPE (integer_three_node) = integer_type_node;
5225 boolean_type_node = make_unsigned_type (BOOL_TYPE_SIZE);
5226 TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE);
5227 TYPE_MAX_VALUE (boolean_type_node) = build_int_2 (1, 0);
5228 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node)) = boolean_type_node;
5229 TYPE_PRECISION (boolean_type_node) = 1;
5230 record_builtin_type (RID_BOOL, "bool", boolean_type_node);
5231 boolean_false_node = build_int_2 (0, 0);
5232 TREE_TYPE (boolean_false_node) = boolean_type_node;
5233 boolean_true_node = build_int_2 (1, 0);
5234 TREE_TYPE (boolean_true_node) = boolean_type_node;
5236 /* These are needed by stor-layout.c. */
5237 size_zero_node = size_int (0);
5238 size_one_node = size_int (1);
5240 signed_size_zero_node = build_int_2 (0, 0);
5241 TREE_TYPE (signed_size_zero_node) = make_signed_type (TYPE_PRECISION (sizetype));
5243 void_type_node = make_node (VOID_TYPE);
5244 record_builtin_type (RID_VOID, NULL_PTR, void_type_node);
5245 layout_type (void_type_node); /* Uses integer_zero_node. */
5246 void_list_node = build_tree_list (NULL_TREE, void_type_node);
5247 TREE_PARMLIST (void_list_node) = 1;
5249 null_pointer_node = build_int_2 (0, 0);
5250 TREE_TYPE (null_pointer_node) = build_pointer_type (void_type_node);
5251 layout_type (TREE_TYPE (null_pointer_node));
5253 /* Used for expressions that do nothing, but are not errors. */
5254 void_zero_node = build_int_2 (0, 0);
5255 TREE_TYPE (void_zero_node) = void_type_node;
5257 string_type_node = build_pointer_type (char_type_node);
5258 const_string_type_node
5259 = build_pointer_type (build_type_variant (char_type_node, 1, 0));
5261 record_builtin_type (RID_MAX, NULL_PTR, string_type_node);
5264 /* Make a type to be the domain of a few array types
5265 whose domains don't really matter.
5266 200 is small enough that it always fits in size_t
5267 and large enough that it can hold most function names for the
5268 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5269 array_domain_type = build_index_type (build_int_2 (200, 0));
5271 /* make a type for arrays of characters.
5272 With luck nothing will ever really depend on the length of this
5274 char_array_type_node
5275 = build_array_type (char_type_node, array_domain_type);
5276 /* Likewise for arrays of ints. */
5278 = build_array_type (integer_type_node, array_domain_type);
5280 /* This is just some anonymous class type. Nobody should ever
5281 need to look inside this envelope. */
5282 class_star_type_node = build_pointer_type (make_lang_type (RECORD_TYPE));
5284 default_function_type
5285 = build_function_type (integer_type_node, NULL_TREE);
5287 ptr_type_node = build_pointer_type (void_type_node);
5289 = build_pointer_type (build_type_variant (void_type_node, 1, 0));
5291 record_builtin_type (RID_MAX, NULL_PTR, ptr_type_node);
5293 endlink = void_list_node;
5294 int_endlink = tree_cons (NULL_TREE, integer_type_node, endlink);
5295 double_endlink = tree_cons (NULL_TREE, double_type_node, endlink);
5296 unsigned_endlink = tree_cons (NULL_TREE, unsigned_type_node, endlink);
5298 ptr_ftype = build_function_type (ptr_type_node, NULL_TREE);
5299 ptr_ftype_unsigned = build_function_type (ptr_type_node, unsigned_endlink);
5300 sizetype_endlink = tree_cons (NULL_TREE, sizetype, endlink);
5301 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5302 ptr_ftype_sizetype = build_function_type (ptr_type_node, sizetype_endlink);
5304 void_ftype = build_function_type (void_type_node, endlink);
5305 void_ftype_int = build_function_type (void_type_node, int_endlink);
5307 = build_function_type (void_type_node,
5308 tree_cons (NULL_TREE, ptr_type_node, endlink));
5310 = build_exception_variant (void_ftype_ptr,
5311 tree_cons (NULL_TREE, NULL_TREE, NULL_TREE));
5314 = build_function_type (float_type_node,
5315 tree_cons (NULL_TREE, float_type_node, endlink));
5318 = build_function_type (double_type_node, double_endlink);
5320 ldouble_ftype_ldouble
5321 = build_function_type (long_double_type_node,
5322 tree_cons (NULL_TREE, long_double_type_node,
5325 double_ftype_double_double
5326 = build_function_type (double_type_node,
5327 tree_cons (NULL_TREE, double_type_node,
5331 = build_function_type (integer_type_node, int_endlink);
5334 = build_function_type (long_integer_type_node,
5335 tree_cons (NULL_TREE, long_integer_type_node,
5338 int_ftype_cptr_cptr_sizet
5339 = build_function_type (integer_type_node,
5340 tree_cons (NULL_TREE, const_ptr_type_node,
5341 tree_cons (NULL_TREE, const_ptr_type_node,
5342 tree_cons (NULL_TREE,
5346 string_ftype_ptr_ptr /* strcpy prototype */
5347 = build_function_type (string_type_node,
5348 tree_cons (NULL_TREE, string_type_node,
5349 tree_cons (NULL_TREE,
5350 const_string_type_node,
5353 int_ftype_string_string /* strcmp prototype */
5354 = build_function_type (integer_type_node,
5355 tree_cons (NULL_TREE, const_string_type_node,
5356 tree_cons (NULL_TREE,
5357 const_string_type_node,
5360 strlen_ftype /* strlen prototype */
5361 = build_function_type (sizetype,
5362 tree_cons (NULL_TREE, const_string_type_node,
5365 memcpy_ftype /* memcpy prototype */
5366 = build_function_type (ptr_type_node,
5367 tree_cons (NULL_TREE, ptr_type_node,
5368 tree_cons (NULL_TREE, const_ptr_type_node,
5369 sizetype_endlink)));
5371 if (flag_huge_objects)
5372 delta_type_node = long_integer_type_node;
5374 delta_type_node = short_integer_type_node;
5376 builtin_function ("__builtin_constant_p", default_function_type,
5377 BUILT_IN_CONSTANT_P, NULL_PTR);
5379 builtin_return_address_fndecl
5380 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned,
5381 BUILT_IN_RETURN_ADDRESS, NULL_PTR);
5383 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned,
5384 BUILT_IN_FRAME_ADDRESS, NULL_PTR);
5386 ptr_ftype_void = build_function_type (ptr_type_node, endlink);
5387 builtin_function ("__builtin_fp", ptr_ftype_void, BUILT_IN_FP, NULL_PTR);
5388 builtin_function ("__builtin_sp", ptr_ftype_void, BUILT_IN_SP, NULL_PTR);
5390 builtin_function ("__builtin_alloca", ptr_ftype_sizetype,
5391 BUILT_IN_ALLOCA, "alloca");
5392 builtin_function ("__builtin_ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
5393 /* Define alloca, ffs as builtins.
5394 Declare _exit just to mark it as volatile. */
5395 if (! flag_no_builtin && !flag_no_nonansi_builtin)
5397 temp = builtin_function ("alloca", ptr_ftype_sizetype,
5398 BUILT_IN_ALLOCA, NULL_PTR);
5399 /* Suppress error if redefined as a non-function. */
5400 DECL_BUILT_IN_NONANSI (temp) = 1;
5401 temp = builtin_function ("ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
5402 /* Suppress error if redefined as a non-function. */
5403 DECL_BUILT_IN_NONANSI (temp) = 1;
5404 temp = builtin_function ("_exit", void_ftype_int,
5405 NOT_BUILT_IN, NULL_PTR);
5406 TREE_THIS_VOLATILE (temp) = 1;
5407 TREE_SIDE_EFFECTS (temp) = 1;
5408 /* Suppress error if redefined as a non-function. */
5409 DECL_BUILT_IN_NONANSI (temp) = 1;
5412 builtin_function ("__builtin_abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
5413 builtin_function ("__builtin_fabsf", float_ftype_float, BUILT_IN_FABS,
5415 builtin_function ("__builtin_fabs", double_ftype_double, BUILT_IN_FABS,
5417 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
5419 builtin_function ("__builtin_labs", long_ftype_long,
5420 BUILT_IN_LABS, NULL_PTR);
5421 builtin_function ("__builtin_saveregs", ptr_ftype,
5422 BUILT_IN_SAVEREGS, NULL_PTR);
5423 builtin_function ("__builtin_classify_type", default_function_type,
5424 BUILT_IN_CLASSIFY_TYPE, NULL_PTR);
5425 builtin_function ("__builtin_next_arg", ptr_ftype,
5426 BUILT_IN_NEXT_ARG, NULL_PTR);
5427 builtin_function ("__builtin_args_info", int_ftype_int,
5428 BUILT_IN_ARGS_INFO, NULL_PTR);
5429 builtin_function ("__builtin_setjmp",
5430 build_function_type (integer_type_node,
5431 tree_cons (NULL_TREE, ptr_type_node,
5433 BUILT_IN_SETJMP, NULL_PTR);
5434 builtin_function ("__builtin_longjmp",
5435 build_function_type (integer_type_node,
5436 tree_cons (NULL_TREE, ptr_type_node,
5437 tree_cons (NULL_TREE,
5440 BUILT_IN_LONGJMP, NULL_PTR);
5442 /* Untyped call and return. */
5443 builtin_function ("__builtin_apply_args", ptr_ftype,
5444 BUILT_IN_APPLY_ARGS, NULL_PTR);
5446 temp = tree_cons (NULL_TREE,
5447 build_pointer_type (build_function_type (void_type_node,
5449 ptr_ftype_sizetype);
5450 builtin_function ("__builtin_apply",
5451 build_function_type (ptr_type_node, temp),
5452 BUILT_IN_APPLY, NULL_PTR);
5453 builtin_function ("__builtin_return", void_ftype_ptr,
5454 BUILT_IN_RETURN, NULL_PTR);
5456 /* Currently under experimentation. */
5457 builtin_function ("__builtin_memcpy", memcpy_ftype,
5458 BUILT_IN_MEMCPY, "memcpy");
5459 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet,
5460 BUILT_IN_MEMCMP, "memcmp");
5461 builtin_function ("__builtin_strcmp", int_ftype_string_string,
5462 BUILT_IN_STRCMP, "strcmp");
5463 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr,
5464 BUILT_IN_STRCPY, "strcpy");
5465 builtin_function ("__builtin_strlen", strlen_ftype,
5466 BUILT_IN_STRLEN, "strlen");
5467 builtin_function ("__builtin_sqrtf", float_ftype_float,
5468 BUILT_IN_FSQRT, "sqrtf");
5469 builtin_function ("__builtin_fsqrt", double_ftype_double,
5470 BUILT_IN_FSQRT, NULL_PTR);
5471 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble,
5472 BUILT_IN_FSQRT, "sqrtl");
5473 builtin_function ("__builtin_sinf", float_ftype_float,
5474 BUILT_IN_SIN, "sinf");
5475 builtin_function ("__builtin_sin", double_ftype_double,
5476 BUILT_IN_SIN, "sin");
5477 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble,
5478 BUILT_IN_SIN, "sinl");
5479 builtin_function ("__builtin_cosf", float_ftype_float,
5480 BUILT_IN_COS, "cosf");
5481 builtin_function ("__builtin_cos", double_ftype_double,
5482 BUILT_IN_COS, "cos");
5483 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble,
5484 BUILT_IN_COS, "cosl");
5486 if (!flag_no_builtin)
5488 builtin_function ("abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
5489 builtin_function ("fabs", double_ftype_double, BUILT_IN_FABS, NULL_PTR);
5490 builtin_function ("labs", long_ftype_long, BUILT_IN_LABS, NULL_PTR);
5491 builtin_function ("fabsf", float_ftype_float, BUILT_IN_FABS, NULL_PTR);
5492 builtin_function ("fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
5494 builtin_function ("memcpy", memcpy_ftype, BUILT_IN_MEMCPY, NULL_PTR);
5495 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet, BUILT_IN_MEMCMP,
5497 builtin_function ("strcmp", int_ftype_string_string, BUILT_IN_STRCMP,
5499 builtin_function ("strcpy", string_ftype_ptr_ptr, BUILT_IN_STRCPY,
5501 builtin_function ("strlen", strlen_ftype, BUILT_IN_STRLEN, NULL_PTR);
5502 builtin_function ("sqrtf", float_ftype_float, BUILT_IN_FSQRT, NULL_PTR);
5503 builtin_function ("sqrt", double_ftype_double, BUILT_IN_FSQRT, NULL_PTR);
5504 builtin_function ("sqrtl", ldouble_ftype_ldouble, BUILT_IN_FSQRT,
5506 builtin_function ("sinf", float_ftype_float, BUILT_IN_SIN, NULL_PTR);
5507 builtin_function ("sin", double_ftype_double, BUILT_IN_SIN, NULL_PTR);
5508 builtin_function ("sinl", ldouble_ftype_ldouble, BUILT_IN_SIN, NULL_PTR);
5509 builtin_function ("cosf", float_ftype_float, BUILT_IN_COS, NULL_PTR);
5510 builtin_function ("cos", double_ftype_double, BUILT_IN_COS, NULL_PTR);
5511 builtin_function ("cosl", ldouble_ftype_ldouble, BUILT_IN_COS, NULL_PTR);
5513 /* Declare these functions volatile
5514 to avoid spurious "control drops through" warnings. */
5515 temp = builtin_function ("abort", void_ftype,
5516 NOT_BUILT_IN, NULL_PTR);
5517 TREE_THIS_VOLATILE (temp) = 1;
5518 TREE_SIDE_EFFECTS (temp) = 1;
5519 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
5521 DECL_BUILT_IN_NONANSI (temp) = 1;
5522 temp = builtin_function ("exit", void_ftype_int,
5523 NOT_BUILT_IN, NULL_PTR);
5524 TREE_THIS_VOLATILE (temp) = 1;
5525 TREE_SIDE_EFFECTS (temp) = 1;
5526 DECL_BUILT_IN_NONANSI (temp) = 1;
5530 /* Support for these has not been written in either expand_builtin
5531 or build_function_call. */
5532 builtin_function ("__builtin_div", default_ftype, BUILT_IN_DIV, NULL_PTR);
5533 builtin_function ("__builtin_ldiv", default_ftype, BUILT_IN_LDIV, NULL_PTR);
5534 builtin_function ("__builtin_ffloor", double_ftype_double, BUILT_IN_FFLOOR,
5536 builtin_function ("__builtin_fceil", double_ftype_double, BUILT_IN_FCEIL,
5538 builtin_function ("__builtin_fmod", double_ftype_double_double,
5539 BUILT_IN_FMOD, NULL_PTR);
5540 builtin_function ("__builtin_frem", double_ftype_double_double,
5541 BUILT_IN_FREM, NULL_PTR);
5542 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int,
5543 BUILT_IN_MEMSET, NULL_PTR);
5544 builtin_function ("__builtin_getexp", double_ftype_double, BUILT_IN_GETEXP,
5546 builtin_function ("__builtin_getman", double_ftype_double, BUILT_IN_GETMAN,
5550 /* C++ extensions */
5552 unknown_type_node = make_node (UNKNOWN_TYPE);
5553 decl = pushdecl (build_decl (TYPE_DECL, get_identifier ("unknown type"),
5554 unknown_type_node));
5555 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5556 DECL_IGNORED_P (decl) = 1;
5557 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
5558 TYPE_SIZE (unknown_type_node) = TYPE_SIZE (void_type_node);
5559 TYPE_ALIGN (unknown_type_node) = 1;
5560 TYPE_MODE (unknown_type_node) = TYPE_MODE (void_type_node);
5561 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
5562 TREE_TYPE (unknown_type_node) = unknown_type_node;
5565 TREE_TYPE (null_node) = type_for_size (POINTER_SIZE, 0);
5567 TREE_TYPE (null_node) = build_pointer_type (unknown_type_node);
5569 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
5571 TYPE_POINTER_TO (unknown_type_node) = unknown_type_node;
5572 TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node;
5574 /* This is for handling opaque types in signatures. */
5575 opaque_type_node = copy_node (ptr_type_node);
5576 TYPE_MAIN_VARIANT (opaque_type_node) = opaque_type_node;
5577 record_builtin_type (RID_MAX, 0, opaque_type_node);
5579 /* This is special for C++ so functions can be overloaded. */
5581 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE)));
5582 wchar_type_size = TYPE_PRECISION (wchar_type_node);
5583 signed_wchar_type_node = make_signed_type (wchar_type_size);
5584 unsigned_wchar_type_node = make_unsigned_type (wchar_type_size);
5586 = TREE_UNSIGNED (wchar_type_node)
5587 ? unsigned_wchar_type_node
5588 : signed_wchar_type_node;
5589 record_builtin_type (RID_WCHAR, "__wchar_t", wchar_type_node);
5591 /* Artificial declaration of wchar_t -- can be bashed */
5592 wchar_decl_node = build_decl (TYPE_DECL, get_identifier ("wchar_t"),
5594 pushdecl (wchar_decl_node);
5596 /* This is for wide string constants. */
5597 wchar_array_type_node
5598 = build_array_type (wchar_type_node, array_domain_type);
5600 if (flag_vtable_thunks)
5602 /* Make sure we get a unique function type, so we can give
5603 its pointer type a name. (This wins for gdb.) */
5604 tree vfunc_type = make_node (FUNCTION_TYPE);
5605 TREE_TYPE (vfunc_type) = integer_type_node;
5606 TYPE_ARG_TYPES (vfunc_type) = NULL_TREE;
5607 layout_type (vfunc_type);
5609 vtable_entry_type = build_pointer_type (vfunc_type);
5613 vtable_entry_type = make_lang_type (RECORD_TYPE);
5614 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
5616 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
5618 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
5620 finish_builtin_type (vtable_entry_type, VTBL_PTR_TYPE, fields, 2,
5623 /* Make this part of an invisible union. */
5624 fields[3] = copy_node (fields[2]);
5625 TREE_TYPE (fields[3]) = delta_type_node;
5626 DECL_NAME (fields[3]) = delta2_identifier;
5627 DECL_MODE (fields[3]) = TYPE_MODE (delta_type_node);
5628 DECL_SIZE (fields[3]) = TYPE_SIZE (delta_type_node);
5629 TREE_UNSIGNED (fields[3]) = 0;
5630 TREE_CHAIN (fields[2]) = fields[3];
5631 vtable_entry_type = build_type_variant (vtable_entry_type, 1, 0);
5633 record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type);
5636 = build_array_type (vtable_entry_type, NULL_TREE);
5637 layout_type (vtbl_type_node);
5638 vtbl_type_node = cp_build_type_variant (vtbl_type_node, 1, 0);
5639 record_builtin_type (RID_MAX, NULL_PTR, vtbl_type_node);
5641 /* Simplify life by making a "sigtable_entry_type". Give its
5642 fields names so that the debugger can use them. */
5644 if (flag_handle_signatures)
5646 sigtable_entry_type = make_lang_type (RECORD_TYPE);
5647 fields[0] = build_lang_field_decl (FIELD_DECL, tag_identifier,
5649 fields[1] = build_lang_field_decl (FIELD_DECL, vb_off_identifier,
5651 fields[2] = build_lang_field_decl (FIELD_DECL, delta_identifier,
5653 fields[3] = build_lang_field_decl (FIELD_DECL, index_identifier,
5655 fields[4] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
5658 /* Set the alignment to the max of the alignment of ptr_type_node and
5659 delta_type_node. Double alignment wastes a word on the Sparc. */
5660 finish_builtin_type (sigtable_entry_type, SIGTABLE_PTR_TYPE, fields, 4,
5661 (TYPE_ALIGN (ptr_type_node) > TYPE_ALIGN (delta_type_node))
5665 /* Make this part of an invisible union. */
5666 fields[5] = copy_node (fields[4]);
5667 TREE_TYPE (fields[5]) = delta_type_node;
5668 DECL_NAME (fields[5]) = vt_off_identifier;
5669 DECL_MODE (fields[5]) = TYPE_MODE (delta_type_node);
5670 DECL_SIZE (fields[5]) = TYPE_SIZE (delta_type_node);
5671 TREE_UNSIGNED (fields[5]) = 0;
5672 TREE_CHAIN (fields[4]) = fields[5];
5674 sigtable_entry_type = build_type_variant (sigtable_entry_type, 1, 0);
5675 record_builtin_type (RID_MAX, SIGTABLE_PTR_TYPE, sigtable_entry_type);
5678 std_node = build_decl (NAMESPACE_DECL, get_identifier ("std"),
5680 pushdecl (std_node);
5683 current_lang_name = lang_name_cplusplus;
5686 tree bad_alloc_type_node = xref_tag
5687 (class_type_node, get_identifier ("bad_alloc"), NULL_TREE, 1);
5688 tree newtype = build_exception_variant
5689 (ptr_ftype_sizetype, build_tree_list (NULL_TREE, bad_alloc_type_node));
5690 tree deltype = build_exception_variant
5691 (void_ftype_ptr, build_tree_list (NULL_TREE, NULL_TREE));
5692 auto_function (ansi_opname[(int) NEW_EXPR], newtype, NOT_BUILT_IN);
5693 auto_function (ansi_opname[(int) VEC_NEW_EXPR], newtype, NOT_BUILT_IN);
5694 auto_function (ansi_opname[(int) DELETE_EXPR], deltype, NOT_BUILT_IN);
5695 auto_function (ansi_opname[(int) VEC_DELETE_EXPR], deltype, NOT_BUILT_IN);
5699 = define_function ("__pure_virtual", void_ftype,
5700 NOT_BUILT_IN, 0, 0);
5702 /* Perform other language dependent initializations. */
5703 init_class_processing ();
5704 init_init_processing ();
5705 init_search_processing ();
5707 init_rtti_processing ();
5709 if (flag_exceptions)
5710 init_exception_processing ();
5713 flag_inline_functions = 0;
5716 if (! supports_one_only ())
5719 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
5720 declare_function_name ();
5722 /* Prepare to check format strings against argument lists. */
5723 init_function_format_info ();
5725 /* Show we use EH for cleanups. */
5726 using_eh_for_cleanups ();
5729 /* Make a definition for a builtin function named NAME and whose data type
5730 is TYPE. TYPE should be a function type with argument types.
5731 FUNCTION_CODE tells later passes how to compile calls to this function.
5732 See tree.h for its possible values.
5734 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
5735 the name to be called if we can't opencode the function. */
5738 define_function (name, type, function_code, pfn, library_name)
5741 enum built_in_function function_code;
5742 void (*pfn) PROTO((tree));
5745 tree decl = build_lang_decl (FUNCTION_DECL, get_identifier (name), type);
5746 DECL_EXTERNAL (decl) = 1;
5747 TREE_PUBLIC (decl) = 1;
5748 DECL_ARTIFICIAL (decl) = 1;
5750 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
5751 we cannot change DECL_ASSEMBLER_NAME until we have installed this
5752 function in the namespace. */
5753 if (pfn) (*pfn) (decl);
5755 DECL_ASSEMBLER_NAME (decl) = get_identifier (library_name);
5756 make_function_rtl (decl);
5757 if (function_code != NOT_BUILT_IN)
5759 DECL_BUILT_IN (decl) = 1;
5760 DECL_FUNCTION_CODE (decl) = function_code;
5765 /* Called when a declaration is seen that contains no names to declare.
5766 If its type is a reference to a structure, union or enum inherited
5767 from a containing scope, shadow that tag name for the current scope
5768 with a forward reference.
5769 If its type defines a new named structure or union
5770 or defines an enum, it is valid but we need not do anything here.
5771 Otherwise, it is an error.
5773 C++: may have to grok the declspecs to learn about static,
5774 complain for anonymous unions. */
5777 shadow_tag (declspecs)
5781 tree ob_modifier = NULL_TREE;
5783 register enum tree_code code, ok_code = ERROR_MARK;
5784 register tree t = NULL_TREE;
5786 for (link = declspecs; link; link = TREE_CHAIN (link))
5788 register tree value = TREE_VALUE (link);
5790 code = TREE_CODE (value);
5791 if (IS_AGGR_TYPE_CODE (code) || code == ENUMERAL_TYPE)
5793 my_friendly_assert (TYPE_MAIN_DECL (value) != NULL_TREE, 261);
5795 if (IS_AGGR_TYPE (value) && CLASSTYPE_USE_TEMPLATE (value))
5797 if (CLASSTYPE_IMPLICIT_INSTANTIATION (value)
5798 && TYPE_SIZE (value) == NULL_TREE)
5800 SET_CLASSTYPE_TEMPLATE_SPECIALIZATION (value);
5801 if (processing_template_decl)
5802 push_template_decl (TYPE_MAIN_DECL (value));
5804 else if (CLASSTYPE_TEMPLATE_INSTANTIATION (value))
5805 cp_error ("specialization after instantiation of `%T'", value);
5812 else if (value == ridpointers[(int) RID_STATIC]
5813 || value == ridpointers[(int) RID_EXTERN]
5814 || value == ridpointers[(int) RID_AUTO]
5815 || value == ridpointers[(int) RID_REGISTER]
5816 || value == ridpointers[(int) RID_INLINE]
5817 || value == ridpointers[(int) RID_VIRTUAL]
5818 || value == ridpointers[(int) RID_EXPLICIT])
5819 ob_modifier = value;
5822 /* This is where the variables in an anonymous union are
5823 declared. An anonymous union declaration looks like:
5825 because there is no declarator after the union, the parser
5826 sends that declaration here. */
5827 if (ok_code == UNION_TYPE
5829 && ((TREE_CODE (TYPE_NAME (t)) == IDENTIFIER_NODE
5830 && ANON_AGGRNAME_P (TYPE_NAME (t)))
5831 || (TREE_CODE (TYPE_NAME (t)) == TYPE_DECL
5832 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))))
5834 /* See also grok_x_components. */
5837 /* Wipe out memory of synthesized methods */
5838 TYPE_HAS_CONSTRUCTOR (t) = 0;
5839 TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0;
5840 TYPE_HAS_INIT_REF (t) = 0;
5841 TYPE_HAS_CONST_INIT_REF (t) = 0;
5842 TYPE_HAS_ASSIGN_REF (t) = 0;
5843 TYPE_HAS_ASSIGNMENT (t) = 0;
5844 TYPE_HAS_CONST_ASSIGN_REF (t) = 0;
5846 q = &TYPE_METHODS (t);
5849 if (DECL_ARTIFICIAL (*q))
5850 *q = TREE_CHAIN (*q);
5852 q = &TREE_CHAIN (*q);
5855 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
5856 function members. */
5857 if (TYPE_METHODS (t))
5858 error ("an anonymous union cannot have function members");
5860 if (TYPE_FIELDS (t))
5862 tree decl = grokdeclarator (NULL_TREE, declspecs, NORMAL, 0,
5864 finish_anon_union (decl);
5869 /* Anonymous unions are objects, that's why we only check for
5870 inappropriate specifiers in this branch. */
5874 if (ob_modifier == ridpointers[(int) RID_INLINE]
5875 || ob_modifier == ridpointers[(int) RID_VIRTUAL])
5876 cp_error ("`%D' can only be specified for functions", ob_modifier);
5877 else if (ob_modifier == ridpointers[(int) RID_EXPLICIT])
5878 cp_error ("`%D' can only be specified for constructors",
5881 cp_error ("`%D' can only be specified for objects and functions",
5886 cp_error ("abstract declarator used as declaration");
5887 else if (found_tag > 1)
5888 pedwarn ("multiple types in one declaration");
5892 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
5895 groktypename (typename)
5898 if (TREE_CODE (typename) != TREE_LIST)
5900 return grokdeclarator (TREE_VALUE (typename),
5901 TREE_PURPOSE (typename),
5902 TYPENAME, 0, NULL_TREE);
5905 /* Decode a declarator in an ordinary declaration or data definition.
5906 This is called as soon as the type information and variable name
5907 have been parsed, before parsing the initializer if any.
5908 Here we create the ..._DECL node, fill in its type,
5909 and put it on the list of decls for the current context.
5910 The ..._DECL node is returned as the value.
5912 Exception: for arrays where the length is not specified,
5913 the type is left null, to be filled in by `cp_finish_decl'.
5915 Function definitions do not come here; they go to start_function
5916 instead. However, external and forward declarations of functions
5917 do go through here. Structure field declarations are done by
5918 grokfield and not through here. */
5920 /* Set this to zero to debug not using the temporary obstack
5921 to parse initializers. */
5922 int debug_temp_inits = 1;
5925 start_decl (declarator, declspecs, initialized, attributes, prefix_attributes)
5926 tree declarator, declspecs;
5928 tree attributes, prefix_attributes;
5931 register tree type, tem;
5933 extern int have_extern_spec;
5934 extern int used_extern_spec;
5937 /* See code below that used this. */
5938 int init_written = initialized;
5941 /* This should only be done once on the top most decl. */
5942 if (have_extern_spec && !used_extern_spec)
5944 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"),
5946 used_extern_spec = 1;
5949 decl = grokdeclarator (declarator, declspecs, NORMAL, initialized,
5951 if (decl == NULL_TREE || TREE_CODE (decl) == VOID_TYPE)
5954 type = TREE_TYPE (decl);
5956 /* Don't lose if destructors must be executed at file-level. */
5957 if (! processing_template_decl && TREE_STATIC (decl)
5958 && TYPE_NEEDS_DESTRUCTOR (complete_type (type))
5959 && !TREE_PERMANENT (decl))
5961 push_obstacks (&permanent_obstack, &permanent_obstack);
5962 decl = copy_node (decl);
5963 if (TREE_CODE (type) == ARRAY_TYPE)
5965 tree itype = TYPE_DOMAIN (type);
5966 if (itype && ! TREE_PERMANENT (itype))
5968 itype = build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype)));
5969 type = build_cplus_array_type (TREE_TYPE (type), itype);
5970 TREE_TYPE (decl) = type;
5977 = (TREE_CODE (decl) == FUNCTION_DECL && DECL_VIRTUAL_P (decl))
5978 ? DECL_CLASS_CONTEXT (decl)
5979 : DECL_CONTEXT (decl);
5982 /* Is it valid for this decl to have an initializer at all?
5983 If not, set INITIALIZED to zero, which will indirectly
5984 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
5985 switch (TREE_CODE (decl))
5988 /* typedef foo = bar means give foo the same type as bar.
5989 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
5990 Any other case of an initialization in a TYPE_DECL is an error. */
5991 if (pedantic || list_length (declspecs) > 1)
5993 cp_error ("typedef `%D' is initialized", decl);
5999 cp_error ("function `%#D' is initialized like a variable", decl);
6004 if (! processing_template_decl)
6006 if (type != error_mark_node)
6008 if (TYPE_SIZE (type) != NULL_TREE
6009 && ! TREE_CONSTANT (TYPE_SIZE (type)))
6012 ("variable-sized object `%D' may not be initialized",
6017 if (TREE_CODE (type) == ARRAY_TYPE
6018 && TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
6021 ("elements of array `%#D' have incomplete type", decl);
6030 if (! toplevel_bindings_p ()
6031 && DECL_EXTERNAL (decl))
6032 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6034 DECL_EXTERNAL (decl) = 0;
6035 if (toplevel_bindings_p ())
6036 TREE_STATIC (decl) = 1;
6038 /* Tell `pushdecl' this is an initialized decl
6039 even though we don't yet have the initializer expression.
6040 Also tell `cp_finish_decl' it may store the real initializer. */
6041 DECL_INITIAL (decl) = error_mark_node;
6044 if (context && TYPE_SIZE (complete_type (context)) != NULL_TREE)
6046 if (TREE_CODE (decl) == VAR_DECL)
6048 tree field = lookup_field (context, DECL_NAME (decl), 0, 0);
6049 if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
6050 cp_error ("`%#D' is not a static member of `%#T'", decl, context);
6053 if (DECL_CONTEXT (field) != context)
6055 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6056 DECL_CONTEXT (field), DECL_NAME (decl),
6057 context, DECL_NAME (decl));
6058 DECL_CONTEXT (decl) = DECL_CONTEXT (field);
6060 /* Static data member are tricky; an in-class initialization
6061 still doesn't provide a definition, so the in-class
6062 declaration will have DECL_EXTERNAL set, but will have an
6063 initialization. Thus, duplicate_decls won't warn
6064 about this situation, and so we check here. */
6065 if (DECL_INITIAL (decl) && DECL_INITIAL (field))
6066 cp_error ("duplicate initialization of %D", decl);
6067 if (duplicate_decls (decl, field))
6073 tree field = check_classfn (context, decl);
6074 if (field && duplicate_decls (decl, field))
6078 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6079 if (DECL_LANG_SPECIFIC (decl))
6080 DECL_IN_AGGR_P (decl) = 0;
6081 if (DECL_USE_TEMPLATE (decl) || CLASSTYPE_USE_TEMPLATE (context))
6082 SET_DECL_TEMPLATE_SPECIALIZATION (decl);
6084 /* Stupid stupid stupid stupid (jason 7/21/95) */
6085 if (pedantic && DECL_EXTERNAL (decl)
6086 && ! DECL_TEMPLATE_SPECIALIZATION (decl))
6087 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6090 pushclass (context, 2);
6093 /* Set attributes here so if duplicate decl, will have proper attributes. */
6094 cplus_decl_attributes (decl, attributes, prefix_attributes);
6096 /* Add this decl to the current binding level, but not if it
6097 comes from another scope, e.g. a static member variable.
6098 TEM may equal DECL or it may be a previous decl of the same name. */
6100 if ((TREE_CODE (decl) != PARM_DECL && DECL_CONTEXT (decl) != NULL_TREE)
6101 || (TREE_CODE (decl) == TEMPLATE_DECL && !global_bindings_p ())
6102 || TREE_CODE (type) == LANG_TYPE
6103 /* The declaration of template specializations does not affect
6104 the functions available for overload resolution, so we do not
6106 || (TREE_CODE (decl) == FUNCTION_DECL
6107 && DECL_TEMPLATE_SPECIALIZATION (decl)))
6110 tem = pushdecl (decl);
6112 if (processing_template_decl)
6114 if (! current_function_decl)
6115 tem = push_template_decl (tem);
6116 else if (minimal_parse_mode)
6118 = build_min_nt (DECL_STMT, copy_to_permanent (declarator),
6119 copy_to_permanent (declspecs),
6124 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6125 /* Tell the back-end to use or not use .common as appropriate. If we say
6126 -fconserve-space, we want this to save .data space, at the expense of
6127 wrong semantics. If we say -fno-conserve-space, we want this to
6128 produce errors about redefs; to do this we force variables into the
6130 DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem);
6133 if (! processing_template_decl)
6136 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6137 push_obstacks_nochange ();
6140 /* We have no way of knowing whether the initializer will need to be
6141 evaluated at run-time or not until we've parsed it, so let's just put
6142 it in the permanent obstack. (jason) */
6144 && ! (TREE_CODE (tem) == PARM_DECL
6145 || (TREE_READONLY (tem)
6146 && (TREE_CODE (tem) == VAR_DECL
6147 || TREE_CODE (tem) == FIELD_DECL))))
6149 /* When parsing and digesting the initializer,
6150 use temporary storage. Do this even if we will ignore the value. */
6151 if (toplevel_bindings_p () && debug_temp_inits)
6153 if (processing_template_decl
6154 || TYPE_NEEDS_CONSTRUCTING (type)
6155 || TREE_CODE (type) == REFERENCE_TYPE)
6156 /* In this case, the initializer must lay down in permanent
6157 storage, since it will be saved until `finish_file' is run. */
6160 temporary_allocation ();
6172 tree type = TREE_TYPE (decl);
6173 int initialized = (DECL_INITIAL (decl) != NULL_TREE);
6175 /* If this type of object needs a cleanup, and control may
6176 jump past it, make a new binding level so that it is cleaned
6177 up only when it is initialized first. */
6178 if (TYPE_NEEDS_DESTRUCTOR (type)
6179 && current_binding_level->more_cleanups_ok == 0)
6180 pushlevel_temporary (1);
6183 /* Is it valid for this decl to have an initializer at all?
6184 If not, set INITIALIZED to zero, which will indirectly
6185 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6187 /* Don't allow initializations for incomplete types except for
6188 arrays which might be completed by the initialization. */
6189 if (type == error_mark_node)
6190 ; /* Don't complain again. */
6191 else if (TYPE_SIZE (complete_type (type)) != NULL_TREE)
6192 ; /* A complete type is ok. */
6193 else if (TREE_CODE (type) != ARRAY_TYPE)
6195 cp_error ("variable `%#D' has initializer but incomplete type",
6199 else if (TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
6201 if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
6202 cp_error ("elements of array `%#D' have incomplete type", decl);
6203 /* else we already gave an error in start_decl. */
6209 && TREE_CODE (decl) != TYPE_DECL
6210 && TREE_CODE (decl) != TEMPLATE_DECL
6211 && IS_AGGR_TYPE (type) && ! DECL_EXTERNAL (decl))
6213 if ((! processing_template_decl || ! uses_template_parms (type))
6214 && TYPE_SIZE (complete_type (type)) == NULL_TREE)
6216 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6218 /* Change the type so that assemble_variable will give
6219 DECL an rtl we can live with: (mem (const_int 0)). */
6220 TREE_TYPE (decl) = error_mark_node;
6221 type = error_mark_node;
6225 /* If any base type in the hierarchy of TYPE needs a constructor,
6226 then we set initialized to 1. This way any nodes which are
6227 created for the purposes of initializing this aggregate
6228 will live as long as it does. This is necessary for global
6229 aggregates which do not have their initializers processed until
6230 the end of the file. */
6231 initialized = TYPE_NEEDS_CONSTRUCTING (type);
6236 /* We don't do this yet for GNU C++. */
6237 /* For a local variable, define the RTL now. */
6238 if (! toplevel_bindings_p ()
6239 /* But not if this is a duplicate decl
6240 and we preserved the rtl from the previous one
6241 (which may or may not happen). */
6242 && DECL_RTL (tem) == NULL_RTX)
6244 if (TYPE_SIZE (TREE_TYPE (tem)) != NULL_TREE)
6246 else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE
6247 && DECL_INITIAL (tem) != NULL_TREE)
6253 DECL_INITIAL (decl) = NULL_TREE;
6256 /* Handle initialization of references.
6257 These three arguments from from `cp_finish_decl', and have the
6258 same meaning here that they do there.
6260 Quotes on semantics can be found in ARM 8.4.3. */
6263 grok_reference_init (decl, type, init)
6264 tree decl, type, init;
6268 if (init == NULL_TREE)
6270 if ((DECL_LANG_SPECIFIC (decl) == 0
6271 || DECL_IN_AGGR_P (decl) == 0)
6272 && ! DECL_THIS_EXTERN (decl))
6274 cp_error ("`%D' declared as reference but not initialized", decl);
6275 if (TREE_CODE (decl) == VAR_DECL)
6276 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6281 if (init == error_mark_node)
6284 if (TREE_CODE (type) == REFERENCE_TYPE
6285 && TREE_CODE (init) == CONSTRUCTOR)
6287 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl);
6291 if (TREE_TYPE (init) && TREE_CODE (TREE_TYPE (init)) == UNKNOWN_TYPE)
6292 /* decay_conversion is probably wrong for references to functions. */
6293 init = decay_conversion (instantiate_type (TREE_TYPE (type), init, 1));
6295 if (TREE_CODE (init) == TREE_LIST)
6296 init = build_compound_expr (init);
6298 if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE)
6299 init = convert_from_reference (init);
6301 if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
6302 && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
6304 /* Note: default conversion is only called in very special cases. */
6305 init = default_conversion (init);
6308 tmp = convert_to_reference
6309 (type, init, CONV_IMPLICIT,
6310 LOOKUP_SPECULATIVELY|LOOKUP_NORMAL|DIRECT_BIND, decl);
6312 if (tmp == error_mark_node)
6314 else if (tmp != NULL_TREE)
6317 DECL_INITIAL (decl) = save_expr (init);
6321 cp_error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init));
6325 /* ?? Can this be optimized in some cases to
6326 hand back the DECL_INITIAL slot?? */
6327 if (TYPE_SIZE (TREE_TYPE (type)))
6329 init = convert_from_reference (decl);
6330 if (TREE_PERMANENT (decl))
6331 init = copy_to_permanent (init);
6332 SET_DECL_REFERENCE_SLOT (decl, init);
6335 if (TREE_STATIC (decl) && ! TREE_CONSTANT (DECL_INITIAL (decl)))
6337 expand_static_init (decl, DECL_INITIAL (decl));
6338 DECL_INITIAL (decl) = NULL_TREE;
6343 if (TREE_CODE (decl) == VAR_DECL)
6344 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6348 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6349 mucking with forces it does not comprehend (i.e. initialization with a
6350 constructor). If we are at global scope and won't go into COMMON, fill
6351 it in with a dummy CONSTRUCTOR to force the variable into .data;
6352 otherwise we can use error_mark_node. */
6355 obscure_complex_init (decl, init)
6358 if (! flag_no_inline && TREE_STATIC (decl))
6360 if (extract_init (decl, init))
6364 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6365 if (toplevel_bindings_p () && ! DECL_COMMON (decl))
6366 DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE,
6370 DECL_INITIAL (decl) = error_mark_node;
6375 /* Finish processing of a declaration;
6376 install its line number and initial value.
6377 If the length of an array type is not known before,
6378 it must be determined now, from the initial value, or it is an error.
6380 Call `pop_obstacks' iff NEED_POP is nonzero.
6382 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6383 for aggregates that have constructors alive on the permanent obstack,
6384 so that the global initializing functions can be written at the end.
6386 INIT0 holds the value of an initializer that should be allowed to escape
6389 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6390 if the (init) syntax was used.
6392 For functions that take default parameters, DECL points to its
6393 "maximal" instantiation. `cp_finish_decl' must then also declared its
6394 subsequently lower and lower forms of instantiation, checking for
6395 ambiguity as it goes. This can be sped up later. */
6398 cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
6405 tree cleanup = NULL_TREE, ttype = NULL_TREE;
6407 int temporary = allocation_temporary_p ();
6408 char *asmspec = NULL;
6409 int was_readonly = 0;
6410 int already_used = 0;
6412 /* If this is 0, then we did not change obstacks. */
6416 error ("assignment (not initialization) in declaration");
6420 /* If a name was specified, get the string. */
6422 asmspec = TREE_STRING_POINTER (asmspec_tree);
6424 /* If the type of the thing we are declaring either has
6425 a constructor, or has a virtual function table pointer,
6426 AND its initialization was accepted by `start_decl',
6427 then we stayed on the permanent obstack through the
6428 declaration, otherwise, changed obstacks as GCC would. */
6430 type = TREE_TYPE (decl);
6432 if (type == error_mark_node)
6434 if (toplevel_bindings_p () && temporary)
6435 end_temporary_allocation ();
6440 if (processing_template_decl)
6442 if (init && DECL_INITIAL (decl))
6443 DECL_INITIAL (decl) = init;
6444 if (minimal_parse_mode && ! DECL_ARTIFICIAL (decl))
6446 tree stmt = DECL_VINDEX (decl);
6447 /* If the decl is declaring a member of a local class (in a
6448 template function), the DECL_VINDEX will either be NULL,
6449 or it will be an actual virtual function index, not a
6451 if (stmt != NULL_TREE && TREE_CODE (stmt) == DECL_STMT)
6453 DECL_VINDEX (decl) = NULL_TREE;
6454 TREE_OPERAND (stmt, 2) = copy_to_permanent (init);
6461 /* Take care of TYPE_DECLs up front. */
6462 if (TREE_CODE (decl) == TYPE_DECL)
6464 if (init && DECL_INITIAL (decl))
6466 /* typedef foo = bar; store the type of bar as the type of foo. */
6467 TREE_TYPE (decl) = type = TREE_TYPE (init);
6468 DECL_INITIAL (decl) = init = NULL_TREE;
6470 if (type != error_mark_node
6471 && IS_AGGR_TYPE (type) && DECL_NAME (decl))
6473 if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
6474 cp_warning ("shadowing previous type declaration of `%#D'", decl);
6475 set_identifier_type_value (DECL_NAME (decl), type);
6476 CLASSTYPE_GOT_SEMICOLON (type) = 1;
6478 GNU_xref_decl (current_function_decl, decl);
6480 /* If we have installed this as the canonical typedef for this
6481 type, and that type has not been defined yet, delay emitting
6482 the debug information for it, as we will emit it later. */
6483 if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl
6484 && TYPE_SIZE (TREE_TYPE (decl)) == NULL_TREE)
6485 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
6487 rest_of_decl_compilation (decl, NULL_PTR,
6488 DECL_CONTEXT (decl) == NULL_TREE, at_eof);
6491 if (TREE_CODE (decl) != FUNCTION_DECL)
6493 ttype = target_type (type);
6496 if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl)
6497 && TYPE_NEEDS_CONSTRUCTING (type))
6500 /* Currently, GNU C++ puts constants in text space, making them
6501 impossible to initialize. In the future, one would hope for
6502 an operating system which understood the difference between
6503 initialization and the running of a program. */
6505 TREE_READONLY (decl) = 0;
6508 if (TREE_CODE (decl) == FIELD_DECL)
6510 if (init && init != error_mark_node)
6511 my_friendly_assert (TREE_PERMANENT (init), 147);
6515 /* This must override the asm specifier which was placed
6516 by grokclassfn. Lay this out fresh. */
6517 DECL_RTL (TREE_TYPE (decl)) = NULL_RTX;
6518 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
6519 make_decl_rtl (decl, asmspec, 0);
6522 /* If `start_decl' didn't like having an initialization, ignore it now. */
6523 else if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE)
6525 else if (DECL_EXTERNAL (decl))
6527 else if (TREE_CODE (type) == REFERENCE_TYPE
6528 || (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE_REFERENCE (type)))
6530 if (TREE_STATIC (decl))
6531 make_decl_rtl (decl, NULL_PTR,
6532 toplevel_bindings_p ()
6533 || pseudo_global_level_p ());
6534 grok_reference_init (decl, type, init);
6538 GNU_xref_decl (current_function_decl, decl);
6540 if (TREE_CODE (decl) == FIELD_DECL)
6542 else if (TREE_CODE (decl) == CONST_DECL)
6544 my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148);
6546 DECL_INITIAL (decl) = init;
6548 /* This will keep us from needing to worry about our obstacks. */
6549 my_friendly_assert (init != NULL_TREE, 149);
6554 if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type))
6556 if (TREE_CODE (type) == ARRAY_TYPE)
6557 init = digest_init (type, init, (tree *) 0);
6558 else if (TREE_CODE (init) == CONSTRUCTOR)
6560 if (TYPE_NON_AGGREGATE_CLASS (type))
6562 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
6564 init = error_mark_node;
6567 goto dont_use_constructor;
6572 dont_use_constructor:
6573 if (TREE_CODE (init) != TREE_VEC)
6574 init = store_init_value (decl, init);
6578 /* We must hide the initializer so that expand_decl
6579 won't try to do something it does not understand. */
6580 init = obscure_complex_init (decl, init);
6582 else if (DECL_EXTERNAL (decl))
6584 else if (TREE_CODE_CLASS (TREE_CODE (type)) == 't'
6585 && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type)))
6588 while (TREE_CODE (ctype) == ARRAY_TYPE)
6589 ctype = TREE_TYPE (ctype);
6590 if (! TYPE_NEEDS_CONSTRUCTING (ctype))
6592 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype))
6593 cp_error ("structure `%D' with uninitialized const members", decl);
6594 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype))
6595 cp_error ("structure `%D' with uninitialized reference members",
6599 if (TREE_CODE (decl) == VAR_DECL
6600 && !DECL_INITIAL (decl)
6601 && !TYPE_NEEDS_CONSTRUCTING (type)
6602 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
6603 cp_error ("uninitialized const `%D'", decl);
6605 if (TYPE_SIZE (type) != NULL_TREE
6606 && TYPE_NEEDS_CONSTRUCTING (type))
6607 init = obscure_complex_init (decl, NULL_TREE);
6609 else if (TREE_CODE (decl) == VAR_DECL
6610 && TREE_CODE (type) != REFERENCE_TYPE
6611 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
6613 /* ``Unless explicitly declared extern, a const object does not have
6614 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
6615 However, if it's `const int foo = 1; const int foo;', don't complain
6616 about the second decl, since it does have an initializer before.
6617 We deliberately don't complain about arrays, because they're
6618 supposed to be initialized by a constructor. */
6619 if (! DECL_INITIAL (decl)
6620 && TREE_CODE (type) != ARRAY_TYPE
6621 && (!pedantic || !current_class_type))
6622 cp_error ("uninitialized const `%#D'", decl);
6625 /* For top-level declaration, the initial value was read in
6626 the temporary obstack. MAXINDEX, rtl, etc. to be made below
6627 must go in the permanent obstack; but don't discard the
6628 temporary data yet. */
6630 if (toplevel_bindings_p () && temporary)
6631 end_temporary_allocation ();
6633 /* Deduce size of array from initialization, if not already known. */
6635 if (TREE_CODE (type) == ARRAY_TYPE
6636 && TYPE_DOMAIN (type) == NULL_TREE
6637 && TREE_CODE (decl) != TYPE_DECL)
6640 = (TREE_STATIC (decl)
6641 /* Even if pedantic, an external linkage array
6642 may have incomplete type at first. */
6643 ? pedantic && ! DECL_EXTERNAL (decl)
6644 : !DECL_EXTERNAL (decl));
6645 tree initializer = init ? init : DECL_INITIAL (decl);
6646 int failure = complete_array_type (type, initializer, do_default);
6649 cp_error ("initializer fails to determine size of `%D'", decl);
6654 cp_error ("array size missing in `%D'", decl);
6655 /* If a `static' var's size isn't known, make it extern as
6656 well as static, so it does not get allocated. If it's not
6657 `static', then don't mark it extern; finish_incomplete_decl
6658 will give it a default size and it will get allocated. */
6659 else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
6660 DECL_EXTERNAL (decl) = 1;
6663 if (pedantic && TYPE_DOMAIN (type) != NULL_TREE
6664 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
6666 cp_error ("zero-size array `%D'", decl);
6668 layout_decl (decl, 0);
6671 if (TREE_CODE (decl) == VAR_DECL)
6673 if (DECL_SIZE (decl) == NULL_TREE
6674 && TYPE_SIZE (complete_type (TREE_TYPE (decl))) != NULL_TREE)
6675 layout_decl (decl, 0);
6677 if (TREE_STATIC (decl) && DECL_SIZE (decl) == NULL_TREE)
6679 /* A static variable with an incomplete type:
6680 that is an error if it is initialized.
6681 Otherwise, let it through, but if it is not `extern'
6682 then it may cause an error message later. */
6683 if (DECL_INITIAL (decl) != NULL_TREE)
6684 cp_error ("storage size of `%D' isn't known", decl);
6687 else if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
6689 /* An automatic variable with an incomplete type: that is an error.
6690 Don't talk about array types here, since we took care of that
6691 message in grokdeclarator. */
6692 cp_error ("storage size of `%D' isn't known", decl);
6693 TREE_TYPE (decl) = error_mark_node;
6695 else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype))
6696 /* Let debugger know it should output info for this type. */
6697 note_debug_info_needed (ttype);
6699 if (TREE_STATIC (decl) && DECL_CONTEXT (decl)
6700 && TREE_CODE_CLASS (TREE_CODE (DECL_CONTEXT (decl))) == 't')
6701 note_debug_info_needed (DECL_CONTEXT (decl));
6703 if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
6704 && DECL_SIZE (decl) != NULL_TREE
6705 && ! TREE_CONSTANT (DECL_SIZE (decl)))
6707 if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
6708 constant_expression_warning (DECL_SIZE (decl));
6710 cp_error ("storage size of `%D' isn't constant", decl);
6713 if (! DECL_EXTERNAL (decl) && TYPE_NEEDS_DESTRUCTOR (type)
6714 /* Cleanups for static variables are handled by `finish_file'. */
6715 && ! TREE_STATIC (decl))
6717 int yes = suspend_momentary ();
6718 cleanup = maybe_build_cleanup (decl);
6719 resume_momentary (yes);
6722 /* PARM_DECLs get cleanups, too. */
6723 else if (TREE_CODE (decl) == PARM_DECL && TYPE_NEEDS_DESTRUCTOR (type))
6726 end_temporary_allocation ();
6727 cleanup = maybe_build_cleanup (decl);
6729 resume_temporary_allocation ();
6732 /* Output the assembler code and/or RTL code for variables and functions,
6733 unless the type is an undefined structure or union.
6734 If not, it will get done when the type is completed. */
6736 was_incomplete = (DECL_SIZE (decl) == NULL_TREE);
6738 if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL
6739 || TREE_CODE (decl) == RESULT_DECL)
6741 /* ??? FIXME: What about nested classes? */
6742 int toplev = toplevel_bindings_p () || pseudo_global_level_p ();
6744 = (TREE_STATIC (decl) && TYPE_NEEDS_DESTRUCTOR (type)
6745 && allocation_temporary_p ());
6748 end_temporary_allocation ();
6750 /* Extern inline function static data has external linkage. */
6751 if (TREE_CODE (decl) == VAR_DECL
6752 && TREE_STATIC (decl)
6753 && current_function_decl
6754 && DECL_CONTEXT (decl) == current_function_decl
6755 && DECL_THIS_INLINE (current_function_decl)
6756 && TREE_PUBLIC (current_function_decl))
6758 if (DECL_INTERFACE_KNOWN (current_function_decl))
6760 TREE_PUBLIC (decl) = 1;
6761 DECL_EXTERNAL (decl) = DECL_EXTERNAL (current_function_decl);
6763 /* We can only do this if we can use common or weak, and we
6764 can't if it has been initialized and we don't support weak. */
6765 else if (DECL_INITIAL (decl) == NULL_TREE
6766 || DECL_INITIAL (decl) == error_mark_node)
6768 TREE_PUBLIC (decl) = 1;
6769 DECL_COMMON (decl) = 1;
6772 make_decl_one_only (decl);
6774 if (TREE_PUBLIC (decl))
6775 DECL_ASSEMBLER_NAME (decl)
6776 = build_static_name (current_function_decl, DECL_NAME (decl));
6777 else if (! DECL_ARTIFICIAL (decl))
6778 cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl);
6781 else if (TREE_CODE (decl) == VAR_DECL
6782 && DECL_LANG_SPECIFIC (decl)
6783 && DECL_COMDAT (decl))
6785 /* Dynamically initialized vars go into common. */
6786 if (DECL_INITIAL (decl) == NULL_TREE
6787 || DECL_INITIAL (decl) == error_mark_node)
6788 DECL_COMMON (decl) = 1;
6789 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
6791 DECL_COMMON (decl) = 1;
6792 DECL_INITIAL (decl) = error_mark_node;
6796 /* Statically initialized vars are weak or comdat, if
6799 make_decl_one_only (decl);
6802 /* we can't do anything useful; leave vars for explicit
6804 DECL_EXTERNAL (decl) = 1;
6805 DECL_NOT_REALLY_EXTERN (decl) = 0;
6810 if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl))
6811 make_decl_rtl (decl, NULL_PTR, toplev);
6812 else if (TREE_CODE (decl) == VAR_DECL
6813 && TREE_READONLY (decl)
6814 && DECL_INITIAL (decl) != NULL_TREE
6815 && DECL_INITIAL (decl) != error_mark_node
6816 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
6818 DECL_INITIAL (decl) = save_expr (DECL_INITIAL (decl));
6821 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
6824 && TREE_STATIC (decl)
6825 && ! TREE_SIDE_EFFECTS (decl)
6826 && ! TREE_PUBLIC (decl)
6827 && ! DECL_EXTERNAL (decl)
6828 && ! TYPE_NEEDS_DESTRUCTOR (type)
6829 && DECL_MODE (decl) != BLKmode)
6831 /* If this variable is really a constant, then fill its DECL_RTL
6832 slot with something which won't take up storage.
6833 If something later should take its address, we can always give
6834 it legitimate RTL at that time. */
6835 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
6836 store_expr (DECL_INITIAL (decl), DECL_RTL (decl), 0);
6837 TREE_ASM_WRITTEN (decl) = 1;
6839 else if (toplev && ! TREE_PUBLIC (decl))
6841 /* If this is a static const, change its apparent linkage
6842 if it belongs to a #pragma interface. */
6843 if (!interface_unknown)
6845 TREE_PUBLIC (decl) = 1;
6846 DECL_EXTERNAL (decl) = interface_only;
6848 make_decl_rtl (decl, asmspec, toplev);
6851 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6853 else if (TREE_CODE (decl) == VAR_DECL
6854 && DECL_LANG_SPECIFIC (decl)
6855 && DECL_IN_AGGR_P (decl))
6857 if (TREE_STATIC (decl))
6859 if (init == NULL_TREE
6860 #ifdef DEFAULT_STATIC_DEFS
6861 /* If this code is dead, then users must
6862 explicitly declare static member variables
6863 outside the class def'n as well. */
6864 && TYPE_NEEDS_CONSTRUCTING (type)
6868 DECL_EXTERNAL (decl) = 1;
6869 make_decl_rtl (decl, asmspec, 1);
6872 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6875 /* Just a constant field. Should not need any rtl. */
6879 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6882 resume_temporary_allocation ();
6884 if (type != error_mark_node
6885 && TYPE_LANG_SPECIFIC (type)
6886 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
6887 abstract_virtuals_error (decl, type);
6888 else if ((TREE_CODE (type) == FUNCTION_TYPE
6889 || TREE_CODE (type) == METHOD_TYPE)
6890 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
6891 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type)))
6892 abstract_virtuals_error (decl, TREE_TYPE (type));
6894 if (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE (type))
6895 signature_error (decl, type);
6896 else if ((TREE_CODE (type) == FUNCTION_TYPE
6897 || TREE_CODE (type) == METHOD_TYPE)
6898 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
6899 && IS_SIGNATURE (TREE_TYPE (type)))
6900 signature_error (decl, TREE_TYPE (type));
6902 if (TREE_CODE (decl) == FUNCTION_DECL)
6904 else if (DECL_EXTERNAL (decl)
6905 && ! (DECL_LANG_SPECIFIC (decl)
6906 && DECL_NOT_REALLY_EXTERN (decl)))
6909 DECL_INITIAL (decl) = init;
6911 else if (TREE_STATIC (decl) && type != error_mark_node)
6913 /* Cleanups for static variables are handled by `finish_file'. */
6914 if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE
6915 || TYPE_NEEDS_DESTRUCTOR (type))
6916 expand_static_init (decl, init);
6920 /* This is a declared decl which must live until the
6921 end of the binding contour. It may need a cleanup. */
6923 /* Recompute the RTL of a local array now
6924 if it used to be an incomplete type. */
6925 if (was_incomplete && ! TREE_STATIC (decl))
6927 /* If we used it already as memory, it must stay in memory. */
6928 TREE_ADDRESSABLE (decl) = TREE_USED (decl);
6929 /* If it's still incomplete now, no init will save it. */
6930 if (DECL_SIZE (decl) == NULL_TREE)
6931 DECL_INITIAL (decl) = NULL_TREE;
6934 else if (! TREE_ASM_WRITTEN (decl)
6935 && (TYPE_SIZE (type) != NULL_TREE
6936 || TREE_CODE (type) == ARRAY_TYPE))
6938 /* Do this here, because we did not expand this decl's
6939 rtl in start_decl. */
6940 if (DECL_RTL (decl) == NULL_RTX)
6944 /* XXX: Why don't we use decl here? */
6945 /* Ans: Because it was already expanded? */
6946 if (! expand_decl_cleanup (NULL_TREE, cleanup))
6947 cp_error ("parser lost in parsing declaration of `%D'",
6949 /* Cleanup used up here. */
6950 cleanup = NULL_TREE;
6954 if (current_binding_level->is_for_scope)
6956 struct binding_level *outer = current_binding_level->level_chain;
6958 /* Check to see if the same name is already bound at
6959 the outer level, either because it was directly declared,
6960 or because a dead for-decl got preserved. In either case,
6961 the code would not have been valid under the ARM
6962 scope rules, so clear is_for_scope for the
6963 current_binding_level.
6965 Otherwise, we need to preserve the temp slot for decl
6966 to last into the outer binding level. */
6968 int handling_dead_for_vars = 0;
6969 tree link = outer->names;
6970 for (; ; link = TREE_CHAIN (link))
6972 if (link == NULL && handling_dead_for_vars == 0)
6974 link = outer->dead_vars_from_for;
6975 handling_dead_for_vars = 1;
6979 if (DECL_IN_MEMORY_P (decl))
6980 preserve_temp_slots (DECL_RTL (decl));
6983 if (DECL_NAME (link) == DECL_NAME (decl))
6985 if (handling_dead_for_vars)
6988 = purpose_member (DECL_NAME (decl),
6989 current_binding_level->shadowed);
6990 if (shadowing && TREE_VALUE (shadowing) == link)
6991 TREE_VALUE (shadowing)
6992 = DECL_SHADOWED_FOR_VAR (link);
6994 current_binding_level->is_for_scope = 0;
7000 expand_start_target_temps ();
7002 if (DECL_SIZE (decl) && type != error_mark_node)
7004 /* Compute and store the initial value. */
7005 expand_decl_init (decl);
7006 already_used = TREE_USED (decl) || TREE_USED (type);
7008 if (init || TYPE_NEEDS_CONSTRUCTING (type))
7010 emit_line_note (DECL_SOURCE_FILE (decl),
7011 DECL_SOURCE_LINE (decl));
7012 expand_aggr_init (decl, init, 0, flags);
7015 /* Set this to 0 so we can tell whether an aggregate which
7016 was initialized was ever used. Don't do this if it has a
7017 destructor, so we don't complain about the 'resource
7018 allocation is initialization' idiom. */
7019 /* Now set attribute((unused)) on types so decls of
7020 of that type will be marked used. (see TREE_USED, above.)
7021 This avoids the warning problems this particular code
7022 tried to work around. */
7024 if (TYPE_NEEDS_CONSTRUCTING (type)
7026 && cleanup == NULL_TREE
7027 && DECL_NAME (decl))
7028 TREE_USED (decl) = 0;
7031 TREE_USED (decl) = 1;
7034 /* Cleanup any temporaries needed for the initial value. */
7035 expand_end_target_temps ();
7037 if (DECL_SIZE (decl) && type != error_mark_node)
7039 /* Store the cleanup, if there was one. */
7042 if (! expand_decl_cleanup (decl, cleanup))
7043 cp_error ("parser lost in parsing declaration of `%D'",
7050 /* Undo call to `pushclass' that was done in `start_decl'
7051 due to initialization of qualified member variable.
7052 I.e., Foo::x = 10; */
7054 tree context = DECL_REAL_CONTEXT (decl);
7056 && TREE_CODE_CLASS (TREE_CODE (context)) == 't'
7057 && (TREE_CODE (decl) == VAR_DECL
7058 /* We also have a pushclass done that we need to undo here
7059 if we're at top level and declare a method. */
7060 || TREE_CODE (decl) == FUNCTION_DECL)
7061 /* If size hasn't been set, we're still defining it,
7062 and therefore inside the class body; don't pop
7063 the binding level.. */
7064 && TYPE_SIZE (context) != NULL_TREE
7065 && context == current_class_type)
7072 /* If requested, warn about definitions of large data objects. */
7074 if (warn_larger_than
7075 && ! processing_template_decl
7076 && (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL)
7077 && !DECL_EXTERNAL (decl))
7079 register tree decl_size = DECL_SIZE (decl);
7081 if (decl_size && TREE_CODE (decl_size) == INTEGER_CST)
7083 unsigned units = TREE_INT_CST_LOW (decl_size) / BITS_PER_UNIT;
7085 if (units > larger_than_size)
7086 warning_with_decl (decl, "size of `%s' is %u bytes", units);
7092 /* Resume permanent allocation, if not within a function. */
7093 /* The corresponding push_obstacks_nochange is in start_decl,
7094 start_method, groktypename, and in grokfield. */
7099 TREE_READONLY (decl) = 1;
7102 /* This is here for a midend callback from c-common.c */
7105 finish_decl (decl, init, asmspec_tree)
7109 cp_finish_decl (decl, init, asmspec_tree, 1, 0);
7113 expand_static_init (decl, init)
7117 tree oldstatic = value_member (decl, static_aggregates);
7121 if (TREE_PURPOSE (oldstatic) && init != NULL_TREE)
7122 cp_error ("multiple initializations given for `%D'", decl);
7124 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
7126 /* Emit code to perform this initialization but once. */
7129 /* Remember this information until end of file. */
7130 push_obstacks (&permanent_obstack, &permanent_obstack);
7132 /* Emit code to perform this initialization but once. */
7133 temp = get_temp_name (integer_type_node, 1);
7134 rest_of_decl_compilation (temp, NULL_PTR, 0, 0);
7135 expand_start_cond (build_binary_op (EQ_EXPR, temp,
7136 integer_zero_node, 1), 0);
7137 expand_start_target_temps ();
7139 expand_assignment (temp, integer_one_node, 0, 0);
7140 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))
7141 || (init && TREE_CODE (init) == TREE_LIST))
7143 expand_aggr_init (decl, init, 0, 0);
7144 do_pending_stack_adjust ();
7147 expand_assignment (decl, init, 0, 0);
7149 /* Cleanup any temporaries needed for the initial value. */
7150 expand_end_target_temps ();
7152 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
7154 tree cleanup, fcall;
7155 static tree Atexit = 0;
7158 tree atexit_fndecl, PFV, pfvlist;
7159 /* Remember this information until end of file. */
7160 push_obstacks (&permanent_obstack, &permanent_obstack);
7161 PFV = build_pointer_type (build_function_type
7162 (void_type_node, void_list_node));
7164 pfvlist = tree_cons (NULL_TREE, PFV, void_list_node);
7166 push_lang_context (lang_name_c);
7168 = builtin_function ("atexit",
7169 build_function_type (void_type_node,
7171 NOT_BUILT_IN, NULL_PTR);
7172 assemble_external (atexit_fndecl);
7173 Atexit = default_conversion (atexit_fndecl);
7174 pop_lang_context ();
7178 cleanup = start_anon_func ();
7179 expand_expr_stmt (build_cleanup (decl));
7181 mark_addressable (cleanup);
7182 cleanup = build_unary_op (ADDR_EXPR, cleanup, 0);
7183 fcall = build_function_call (Atexit, expr_tree_cons (NULL_TREE, cleanup, NULL_TREE));
7184 expand_expr_stmt (fcall);
7188 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
7190 static_aggregates = perm_tree_cons (temp, decl, static_aggregates);
7191 TREE_STATIC (static_aggregates) = 1;
7194 /* Resume old (possibly temporary) allocation. */
7199 /* This code takes into account memory allocation
7200 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7201 does not hold for this object, then we must make permanent
7202 the storage currently in the temporary obstack. */
7203 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))
7204 preserve_initializer ();
7205 static_aggregates = perm_tree_cons (init, decl, static_aggregates);
7209 /* Make TYPE a complete type based on INITIAL_VALUE.
7210 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7211 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7214 complete_array_type (type, initial_value, do_default)
7215 tree type, initial_value;
7218 register tree maxindex = NULL_TREE;
7223 /* Note MAXINDEX is really the maximum index,
7224 one less than the size. */
7225 if (TREE_CODE (initial_value) == STRING_CST)
7228 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
7229 maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
7232 else if (TREE_CODE (initial_value) == CONSTRUCTOR)
7234 tree elts = CONSTRUCTOR_ELTS (initial_value);
7235 maxindex = size_binop (MINUS_EXPR, integer_zero_node, size_one_node);
7236 for (; elts; elts = TREE_CHAIN (elts))
7238 if (TREE_PURPOSE (elts))
7239 maxindex = TREE_PURPOSE (elts);
7241 maxindex = size_binop (PLUS_EXPR, maxindex, size_one_node);
7243 maxindex = copy_node (maxindex);
7247 /* Make an error message unless that happened already. */
7248 if (initial_value != error_mark_node)
7251 /* Prevent further error messages. */
7252 maxindex = build_int_2 (0, 0);
7259 maxindex = build_int_2 (0, 0);
7267 TYPE_DOMAIN (type) = build_index_type (maxindex);
7268 if (! TREE_TYPE (maxindex))
7269 TREE_TYPE (maxindex) = TYPE_DOMAIN (type);
7271 itype = TREE_TYPE (initial_value);
7274 if (itype && !TYPE_DOMAIN (itype))
7275 TYPE_DOMAIN (itype) = TYPE_DOMAIN (type);
7276 /* The type of the main variant should never be used for arrays
7277 of different sizes. It should only ever be completed with the
7278 size of the array. */
7279 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)))
7280 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = TYPE_DOMAIN (type);
7283 /* Lay out the type now that we can get the real answer. */
7290 /* Return zero if something is declared to be a member of type
7291 CTYPE when in the context of CUR_TYPE. STRING is the error
7292 message to print in that case. Otherwise, quietly return 1. */
7295 member_function_or_else (ctype, cur_type, string)
7296 tree ctype, cur_type;
7299 if (ctype && ctype != cur_type)
7301 error (string, TYPE_NAME_STRING (ctype));
7307 /* Subroutine of `grokdeclarator'. */
7309 /* Generate errors possibly applicable for a given set of specifiers.
7310 This is for ARM $7.1.2. */
7313 bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises)
7316 int virtualp, quals, friendp, raises, inlinep;
7319 cp_error ("`%D' declared as a `virtual' %s", object, type);
7321 cp_error ("`%D' declared as an `inline' %s", object, type);
7323 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7326 cp_error_at ("invalid friend declaration", object);
7328 cp_error_at ("invalid exception specifications", object);
7331 /* CTYPE is class type, or null if non-class.
7332 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7334 DECLARATOR is the function's name.
7335 VIRTUALP is truthvalue of whether the function is virtual or not.
7336 FLAGS are to be passed through to `grokclassfn'.
7337 QUALS are qualifiers indicating whether the function is `const'
7339 RAISES is a list of exceptions that this function can raise.
7340 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7341 not look, and -1 if we should not call `grokclassfn' at all. */
7344 grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals,
7345 raises, attrlist, check, friendp, publicp, inlinep, funcdef_flag,
7349 tree orig_declarator;
7351 enum overload_flags flags;
7352 tree quals, raises, attrlist;
7353 int check, friendp, publicp, inlinep, funcdef_flag, template_count;
7356 int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
7360 cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL
7361 ? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype);
7367 type = build_exception_variant (type, raises);
7370 decl = build_lang_decl (FUNCTION_DECL, declarator, type);
7371 /* propagate volatile out from type to decl */
7372 if (TYPE_VOLATILE (type))
7373 TREE_THIS_VOLATILE (decl) = 1;
7375 /* Should probably propagate const out from type to decl I bet (mrs). */
7378 DECL_STATIC_FUNCTION_P (decl) = 1;
7379 DECL_CONTEXT (decl) = ctype;
7383 DECL_CLASS_CONTEXT (decl) = ctype;
7385 if (ctype == NULL_TREE && ! strcmp (IDENTIFIER_POINTER (declarator), "main"))
7388 error ("cannot declare `main' to be inline");
7390 error ("cannot declare `main' to be static");
7395 TREE_PUBLIC (decl) = publicp;
7398 DECL_INTERFACE_KNOWN (decl) = 1;
7399 DECL_NOT_REALLY_EXTERN (decl) = 1;
7403 DECL_THIS_INLINE (decl) = DECL_INLINE (decl) = 1;
7405 DECL_EXTERNAL (decl) = 1;
7406 if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE)
7408 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7409 (ctype ? "static " : "non-"), decl, TREE_VALUE (quals));
7413 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl)))
7414 grok_op_properties (decl, virtualp, check < 0);
7416 if (ctype && hack_decl_function_context (decl))
7417 DECL_NO_STATIC_CHAIN (decl) = 1;
7419 for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t))
7420 if (TREE_PURPOSE (t)
7421 && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
7423 add_defarg_fn (decl);
7428 TREE_CODE (orig_declarator) == TEMPLATE_ID_EXPR)
7430 /* A friend declaration of the form friend void f<>(). Record
7431 the information in the TEMPLATE_ID_EXPR. */
7432 SET_DECL_IMPLICIT_INSTANTIATION (decl);
7433 DECL_TEMPLATE_INFO (decl)
7434 = perm_tree_cons (TREE_OPERAND (orig_declarator, 0),
7435 TREE_OPERAND (orig_declarator, 1),
7439 /* Caller will do the rest of this. */
7443 if (check && funcdef_flag)
7444 DECL_INITIAL (decl) = error_mark_node;
7446 if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator)
7449 /* Just handle constructors here. We could do this
7450 inside the following if stmt, but I think
7451 that the code is more legible by breaking this
7452 case out. See comments below for what each of
7453 the following calls is supposed to do. */
7454 DECL_CONSTRUCTOR_P (decl) = 1;
7456 grokclassfn (ctype, declarator, decl, flags, quals);
7458 decl = check_explicit_specialization (orig_declarator, decl,
7460 2 * (funcdef_flag != 0) +
7461 4 * (friendp != 0));
7465 tmp = check_classfn (ctype, decl);
7467 if (tmp && TREE_CODE (tmp) == TEMPLATE_DECL)
7468 tmp = DECL_TEMPLATE_RESULT(tmp);
7470 if (tmp && DECL_ARTIFICIAL (tmp))
7471 cp_error ("definition of implicitly-declared `%D'", tmp);
7472 if (tmp && duplicate_decls (decl, tmp))
7475 if (! grok_ctor_properties (ctype, decl))
7478 if (check == 0 && ! current_function_decl)
7480 /* assembler names live in the global namespace */
7481 tmp = IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl));
7482 if (tmp == NULL_TREE)
7483 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl;
7484 else if (TREE_CODE (tmp) != TREE_CODE (decl))
7485 cp_error ("inconsistent declarations for `%D'", decl);
7488 duplicate_decls (decl, tmp);
7490 /* avoid creating circularities. */
7491 DECL_CHAIN (decl) = NULL_TREE;
7493 make_decl_rtl (decl, NULL_PTR, 1);
7500 /* Function gets the ugly name, field gets the nice one.
7501 This call may change the type of the function (because
7502 of default parameters)! */
7503 if (ctype != NULL_TREE)
7504 grokclassfn (ctype, cname, decl, flags, quals);
7506 decl = check_explicit_specialization (orig_declarator, decl,
7508 2 * (funcdef_flag != 0) +
7509 4 * (friendp != 0));
7511 if (ctype != NULL_TREE && check)
7513 tmp = check_classfn (ctype, decl);
7515 if (tmp && TREE_CODE (tmp) == TEMPLATE_DECL)
7516 tmp = DECL_TEMPLATE_RESULT (tmp);
7518 if (tmp && DECL_STATIC_FUNCTION_P (tmp)
7519 && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
7521 /* Remove the `this' parm added by grokclassfn.
7522 XXX Isn't this done in start_function, too? */
7523 revert_static_member_fn (&decl, NULL, NULL);
7524 last_function_parms = TREE_CHAIN (last_function_parms);
7526 if (tmp && DECL_ARTIFICIAL (tmp))
7527 cp_error ("definition of implicitly-declared `%D'", tmp);
7530 if (!duplicate_decls (decl, tmp))
7531 my_friendly_abort (892);
7536 if (ctype == NULL_TREE || check)
7539 /* Now install the declaration of this function so that others may
7540 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
7542 if (! current_function_decl)
7544 if (!DECL_TEMPLATE_SPECIALIZATION (decl))
7546 /* We don't do this for specializations since the
7547 equivalent checks will be done later. Also, at this
7548 point the DECL_ASSEMBLER_NAME is not yet fully
7551 /* FIXME: this should only need to look at
7552 IDENTIFIER_GLOBAL_VALUE. */
7553 tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0);
7554 if (tmp == NULL_TREE)
7555 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl;
7556 else if (TREE_CODE (tmp) != TREE_CODE (decl))
7557 cp_error ("inconsistent declarations for `%D'", decl);
7560 duplicate_decls (decl, tmp);
7562 /* avoid creating circularities. */
7563 DECL_CHAIN (decl) = NULL_TREE;
7568 cplus_decl_attributes (decl, TREE_PURPOSE (attrlist),
7569 TREE_VALUE (attrlist));
7570 make_decl_rtl (decl, NULL_PTR, 1);
7574 DECL_VIRTUAL_P (decl) = 1;
7575 if (DECL_VINDEX (decl) == NULL_TREE)
7576 DECL_VINDEX (decl) = error_mark_node;
7577 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl)) = 1;
7584 grokvardecl (type, declarator, specbits_in, initialized, constp)
7587 RID_BIT_TYPE *specbits_in;
7592 RID_BIT_TYPE specbits;
7594 specbits = *specbits_in;
7596 if (TREE_CODE (type) == OFFSET_TYPE)
7598 /* If you declare a static member so that it
7599 can be initialized, the code will reach here. */
7600 tree basetype = TYPE_OFFSET_BASETYPE (type);
7601 type = TREE_TYPE (type);
7602 decl = build_lang_field_decl (VAR_DECL, declarator, type);
7603 DECL_CONTEXT (decl) = basetype;
7604 DECL_CLASS_CONTEXT (decl) = basetype;
7605 DECL_ASSEMBLER_NAME (decl) = build_static_name (basetype, declarator);
7609 decl = build_decl (VAR_DECL, declarator, complete_type (type));
7610 if (current_namespace != global_namespace)
7611 DECL_ASSEMBLER_NAME (decl) = build_static_name (current_namespace,
7615 if (RIDBIT_SETP (RID_EXTERN, specbits))
7617 DECL_THIS_EXTERN (decl) = 1;
7618 DECL_EXTERNAL (decl) = !initialized;
7621 /* In class context, static means one per class,
7622 public access, and static storage. */
7623 if (DECL_FIELD_CONTEXT (decl) != NULL_TREE
7624 && IS_AGGR_TYPE (DECL_FIELD_CONTEXT (decl)))
7626 TREE_PUBLIC (decl) = 1;
7627 TREE_STATIC (decl) = 1;
7628 DECL_EXTERNAL (decl) = 0;
7630 /* At top level, either `static' or no s.c. makes a definition
7631 (perhaps tentative), and absence of `static' makes it public. */
7632 else if (toplevel_bindings_p ())
7634 TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits)
7635 && (DECL_THIS_EXTERN (decl) || ! constp));
7636 TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
7638 /* Not at top level, only `static' makes a static definition. */
7641 TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits);
7642 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
7647 /* Create a canonical pointer to member function type. */
7650 build_ptrmemfunc_type (type)
7657 /* If a canonical type already exists for this type, use it. We use
7658 this method instead of type_hash_canon, because it only does a
7659 simple equality check on the list of field members. */
7661 if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
7664 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
7666 u = make_lang_type (UNION_TYPE);
7667 IS_AGGR_TYPE (u) = 0;
7668 fields[0] = build_lang_field_decl (FIELD_DECL, pfn_identifier, type);
7669 fields[1] = build_lang_field_decl (FIELD_DECL, delta2_identifier,
7671 finish_builtin_type (u, "__ptrmemfunc_type", fields, 1, ptr_type_node);
7672 TYPE_NAME (u) = NULL_TREE;
7674 t = make_lang_type (RECORD_TYPE);
7676 /* Let the front-end know this is a pointer to member function. */
7677 TYPE_PTRMEMFUNC_FLAG (t) = 1;
7678 /* and not really an aggregate. */
7679 IS_AGGR_TYPE (t) = 0;
7681 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
7683 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
7685 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_or_delta2_identifier, u);
7686 finish_builtin_type (t, "__ptrmemfunc_type", fields, 2, ptr_type_node);
7690 /* Zap out the name so that the back-end will give us the debugging
7691 information for this anonymous RECORD_TYPE. */
7692 TYPE_NAME (t) = NULL_TREE;
7694 TYPE_SET_PTRMEMFUNC_TYPE (type, t);
7696 /* Seems to be wanted. */
7697 CLASSTYPE_GOT_SEMICOLON (t) = 1;
7701 /* Given declspecs and a declarator,
7702 determine the name and type of the object declared
7703 and construct a ..._DECL node for it.
7704 (In one case we can return a ..._TYPE node instead.
7705 For invalid input we sometimes return 0.)
7707 DECLSPECS is a chain of tree_list nodes whose value fields
7708 are the storage classes and type specifiers.
7710 DECL_CONTEXT says which syntactic context this declaration is in:
7711 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
7712 FUNCDEF for a function definition. Like NORMAL but a few different
7713 error messages in each case. Return value may be zero meaning
7714 this definition is too screwy to try to parse.
7715 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
7716 handle member functions (which have FIELD context).
7717 Return value may be zero meaning this definition is too screwy to
7719 PARM for a parameter declaration (either within a function prototype
7720 or before a function body). Make a PARM_DECL, or return void_type_node.
7721 CATCHPARM for a parameter declaration before a catch clause.
7722 TYPENAME if for a typename (in a cast or sizeof).
7723 Don't make a DECL node; just return the ..._TYPE node.
7724 FIELD for a struct or union field; make a FIELD_DECL.
7725 BITFIELD for a field with specified width.
7726 INITIALIZED is 1 if the decl has an initializer.
7728 In the TYPENAME case, DECLARATOR is really an absolute declarator.
7729 It may also be so in the PARM case, for a prototype where the
7730 argument type is specified but not the name.
7732 This function is where the complicated C meanings of `static'
7733 and `extern' are interpreted.
7735 For C++, if there is any monkey business to do, the function which
7736 calls this one must do it, i.e., prepending instance variables,
7737 renaming overloaded function names, etc.
7739 Note that for this C++, it is an error to define a method within a class
7740 which does not belong to that class.
7742 Except in the case where SCOPE_REFs are implicitly known (such as
7743 methods within a class being redundantly qualified),
7744 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
7745 (class_name::decl_name). The caller must also deal with this.
7747 If a constructor or destructor is seen, and the context is FIELD,
7748 then the type gains the attribute TREE_HAS_x. If such a declaration
7749 is erroneous, NULL_TREE is returned.
7751 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
7752 function, these are the qualifiers to give to the `this' pointer.
7754 May return void_type_node if the declarator turned out to be a friend.
7755 See grokfield for details. */
7757 enum return_types { return_normal, return_ctor, return_dtor, return_conversion };
7760 grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
7763 enum decl_context decl_context;
7767 RID_BIT_TYPE specbits;
7770 tree type = NULL_TREE;
7774 int virtualp, explicitp, friendp, inlinep, staticp;
7775 int explicit_int = 0;
7776 int explicit_char = 0;
7777 int defaulted_int = 0;
7778 int opaque_typedef = 0;
7779 tree typedef_decl = NULL_TREE;
7781 tree typedef_type = NULL_TREE;
7782 int funcdef_flag = 0;
7783 enum tree_code innermost_code = ERROR_MARK;
7786 /* See the code below that used this. */
7787 tree decl_machine_attr = NULL_TREE;
7789 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
7790 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
7791 tree init = NULL_TREE;
7793 /* Keep track of what sort of function is being processed
7794 so that we can warn about default return values, or explicit
7795 return values which do not match prescribed defaults. */
7796 enum return_types return_type = return_normal;
7798 tree dname = NULL_TREE;
7799 tree ctype = current_class_type;
7800 tree ctor_return_type = NULL_TREE;
7801 enum overload_flags flags = NO_SPECIAL;
7802 tree quals = NULL_TREE;
7803 tree raises = NULL_TREE;
7804 int template_count = 0;
7806 RIDBIT_RESET_ALL (specbits);
7807 if (decl_context == FUNCDEF)
7808 funcdef_flag = 1, decl_context = NORMAL;
7809 else if (decl_context == MEMFUNCDEF)
7810 funcdef_flag = -1, decl_context = FIELD;
7811 else if (decl_context == BITFIELD)
7812 bitfield = 1, decl_context = FIELD;
7814 /* Look inside a declarator for the name being declared
7815 and get it as a string, for an error message. */
7817 tree *next = &declarator;
7821 while (next && *next)
7824 switch (TREE_CODE (decl))
7828 next = &TREE_OPERAND (decl, 0);
7831 case BIT_NOT_EXPR: /* for C++ destructors! */
7833 tree name = TREE_OPERAND (decl, 0);
7834 tree rename = NULL_TREE;
7836 my_friendly_assert (flags == NO_SPECIAL, 152);
7838 return_type = return_dtor;
7839 if (TREE_CODE (name) == TYPE_DECL)
7840 TREE_OPERAND (decl, 0) = name = constructor_name (name);
7841 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153);
7842 if (ctype == NULL_TREE)
7844 if (current_class_type == NULL_TREE)
7846 error ("destructors must be member functions");
7851 tree t = constructor_name (current_class_name);
7858 tree t = constructor_name (ctype);
7865 cp_error ("destructor `%T' must match class name `%T'",
7867 TREE_OPERAND (decl, 0) = rename;
7873 case ADDR_EXPR: /* C++ reference declaration */
7878 innermost_code = TREE_CODE (decl);
7879 next = &TREE_OPERAND (decl, 0);
7883 if (parmlist_is_exprlist (TREE_OPERAND (decl, 1)))
7885 /* This is actually a variable declaration using constructor
7886 syntax. We need to call start_decl and cp_finish_decl so we
7887 can get the variable initialized... */
7889 *next = TREE_OPERAND (decl, 0);
7890 init = TREE_OPERAND (decl, 1);
7892 decl = start_decl (declarator, declspecs, 1, NULL_TREE, NULL_TREE);
7893 /* Look for __unused__ attribute */
7894 if (TREE_USED (TREE_TYPE (decl)))
7895 TREE_USED (decl) = 1;
7896 finish_decl (decl, init, NULL_TREE);
7899 innermost_code = TREE_CODE (decl);
7900 if (decl_context == FIELD && ctype == NULL_TREE)
7901 ctype = current_class_type;
7903 && TREE_OPERAND (decl, 0)
7904 && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL
7905 && ((DECL_NAME (TREE_OPERAND (decl, 0))
7906 == constructor_name_full (ctype))
7907 || (DECL_NAME (TREE_OPERAND (decl, 0))
7908 == constructor_name (ctype)))))
7909 TREE_OPERAND (decl, 0) = constructor_name (ctype);
7910 next = &TREE_OPERAND (decl, 0);
7912 if (ctype != NULL_TREE
7913 && decl != NULL_TREE && flags != DTOR_FLAG
7914 && decl == constructor_name (ctype))
7916 return_type = return_ctor;
7917 ctor_return_type = ctype;
7922 case TEMPLATE_ID_EXPR:
7924 tree fns = TREE_OPERAND (decl, 0);
7926 if (TREE_CODE (fns) == LOOKUP_EXPR)
7927 fns = TREE_OPERAND (fns, 0);
7929 if (TREE_CODE (fns) == IDENTIFIER_NODE)
7931 else if (is_overloaded_fn (fns))
7932 dname = DECL_NAME (get_first_fn (fns));
7934 my_friendly_abort (0);
7938 case IDENTIFIER_NODE:
7939 if (TREE_CODE (decl) == IDENTIFIER_NODE)
7946 cp_error ("declarator-id missing; using reserved word `%D'",
7948 name = IDENTIFIER_POINTER (dname);
7950 if (! IDENTIFIER_OPNAME_P (dname)
7951 /* GNU/Linux headers use '__op'. Arrgh. */
7952 || (IDENTIFIER_TYPENAME_P (dname) && ! TREE_TYPE (dname)))
7953 name = IDENTIFIER_POINTER (dname);
7956 if (IDENTIFIER_TYPENAME_P (dname))
7958 my_friendly_assert (flags == NO_SPECIAL, 154);
7959 flags = TYPENAME_FLAG;
7960 ctor_return_type = TREE_TYPE (dname);
7961 return_type = return_conversion;
7963 name = operator_name_string (dname);
7970 /* Perform error checking, and decide on a ctype. */
7971 tree cname = TREE_OPERAND (decl, 0);
7972 if (cname == NULL_TREE)
7974 else if (! is_aggr_type (cname, 1))
7975 TREE_OPERAND (decl, 0) = NULL_TREE;
7976 /* Must test TREE_OPERAND (decl, 1), in case user gives
7977 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
7978 else if (TREE_OPERAND (decl, 1)
7979 && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)
7981 else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM
7982 || TREE_CODE (cname) == TEMPLATE_TEMPLATE_PARM)
7984 cp_error ("`%T::%D' is not a valid declarator", cname,
7985 TREE_OPERAND (decl, 1));
7986 cp_error (" perhaps you want `typename %T::%D' to make it a type",
7987 cname, TREE_OPERAND (decl, 1));
7988 return void_type_node;
7990 else if (ctype == NULL_TREE)
7992 else if (TREE_COMPLEXITY (decl) == current_class_depth)
7993 TREE_OPERAND (decl, 0) = ctype;
7996 if (! UNIQUELY_DERIVED_FROM_P (cname, ctype))
7998 cp_error ("type `%T' is not derived from type `%T'",
8000 TREE_OPERAND (decl, 0) = NULL_TREE;
8006 if (ctype && TREE_CODE (TREE_OPERAND (decl, 1)) == TYPE_DECL
8007 && ((DECL_NAME (TREE_OPERAND (decl, 1))
8008 == constructor_name_full (ctype))
8009 || (DECL_NAME (TREE_OPERAND (decl, 1))
8010 == constructor_name (ctype))))
8011 TREE_OPERAND (decl, 1) = constructor_name (ctype);
8012 next = &TREE_OPERAND (decl, 1);
8016 if (TREE_CODE (decl) == IDENTIFIER_NODE
8017 && constructor_name (ctype) == decl)
8019 return_type = return_ctor;
8020 ctor_return_type = ctype;
8022 else if (TREE_CODE (decl) == BIT_NOT_EXPR
8023 && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE
8024 && (constructor_name (ctype) == TREE_OPERAND (decl, 0)
8025 || constructor_name_full (ctype) == TREE_OPERAND (decl, 0)))
8027 return_type = return_dtor;
8028 ctor_return_type = ctype;
8030 TREE_OPERAND (decl, 0) = constructor_name (ctype);
8031 next = &TREE_OPERAND (decl, 0);
8042 /* Parse error puts this typespec where
8043 a declarator should go. */
8044 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl));
8045 if (TREE_TYPE (decl) == current_class_type)
8046 cp_error (" perhaps you want `%T' for a constructor",
8047 current_class_name);
8048 dname = DECL_NAME (decl);
8049 name = IDENTIFIER_POINTER (dname);
8051 /* Avoid giving two errors for this. */
8052 IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE;
8054 declspecs = temp_tree_cons (NULL_TREE, integer_type_node,
8061 cp_compiler_error ("`%D' as declarator", decl);
8062 return 0; /* We used to do a 155 abort here. */
8069 /* A function definition's declarator must have the form of
8070 a function declarator. */
8072 if (funcdef_flag && innermost_code != CALL_EXPR)
8075 if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
8076 && innermost_code != CALL_EXPR
8077 && ! (ctype && declspecs == NULL_TREE))
8079 cp_error ("declaration of `%D' as non-function", dname);
8080 return void_type_node;
8083 /* Anything declared one level down from the top level
8084 must be one of the parameters of a function
8085 (because the body is at least two levels down). */
8087 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
8088 by not allowing C++ class definitions to specify their parameters
8089 with xdecls (must be spec.d in the parmlist).
8091 Since we now wait to push a class scope until we are sure that
8092 we are in a legitimate method context, we must set oldcname
8093 explicitly (since current_class_name is not yet alive).
8095 We also want to avoid calling this a PARM if it is in a namespace. */
8097 if (decl_context == NORMAL && ! namespace_bindings_p ()
8098 && ! pseudo_global_level_p ())
8100 struct binding_level *b = current_binding_level;
8101 current_binding_level = b->level_chain;
8102 if (current_binding_level != 0 && toplevel_bindings_p ())
8103 decl_context = PARM;
8104 current_binding_level = b;
8107 /* Look through the decl specs and record which ones appear.
8108 Some typespecs are defined as built-in typenames.
8109 Others, the ones that are modifiers of other types,
8110 are represented by bits in SPECBITS: set the bits for
8111 the modifiers that appear. Storage class keywords are also in SPECBITS.
8113 If there is a typedef name or a type, store the type in TYPE.
8114 This includes builtin typedefs such as `int'.
8116 Set EXPLICIT_INT if the type is `int' or `char' and did not
8117 come from a user typedef.
8119 Set LONGLONG if `long' is mentioned twice.
8121 For C++, constructors and destructors have their own fast treatment. */
8123 for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
8128 /* Certain parse errors slip through. For example,
8129 `int class;' is not caught by the parser. Try
8130 weakly to recover here. */
8131 if (TREE_CODE (spec) != TREE_LIST)
8134 id = TREE_VALUE (spec);
8136 if (TREE_CODE (id) == IDENTIFIER_NODE)
8138 if (id == ridpointers[(int) RID_INT]
8139 || id == ridpointers[(int) RID_CHAR]
8140 || id == ridpointers[(int) RID_BOOL]
8141 || id == ridpointers[(int) RID_WCHAR])
8145 if (id == ridpointers[(int) RID_BOOL])
8146 error ("`bool' is now a keyword");
8148 cp_error ("extraneous `%T' ignored", id);
8152 if (id == ridpointers[(int) RID_INT])
8154 else if (id == ridpointers[(int) RID_CHAR])
8156 type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id));
8160 /* C++ aggregate types. */
8161 if (IDENTIFIER_HAS_TYPE_VALUE (id))
8164 cp_error ("multiple declarations `%T' and `%T'", type, id);
8166 type = IDENTIFIER_TYPE_VALUE (id);
8170 for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++)
8172 if (ridpointers[i] == id)
8174 if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits))
8176 if (pedantic && ! in_system_header)
8177 pedwarn ("ANSI C++ does not support `long long'");
8179 error ("`long long long' is too long for GCC");
8183 else if (RIDBIT_SETP (i, specbits))
8184 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id));
8185 RIDBIT_SET (i, specbits);
8190 /* C++ aggregate types. */
8191 else if (TREE_CODE (id) == TYPE_DECL || TREE_CODE (id) == TEMPLATE_DECL)
8194 cp_error ("multiple declarations `%T' and `%T'", type,
8198 type = TREE_TYPE (id);
8199 TREE_VALUE (spec) = type;
8204 error ("two or more data types in declaration of `%s'", name);
8205 else if (TREE_CODE (id) == IDENTIFIER_NODE)
8207 register tree t = lookup_name (id, 1);
8208 if (!t || TREE_CODE (t) != TYPE_DECL)
8209 error ("`%s' fails to be a typedef or built in type",
8210 IDENTIFIER_POINTER (id));
8213 type = TREE_TYPE (t);
8215 /* See the code below that used this. */
8216 decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id);
8221 else if (id != error_mark_node)
8222 /* Can't change CLASS nodes into RECORD nodes here! */
8228 typedef_type = type;
8230 /* No type at all: default to `int', and set DEFAULTED_INT
8231 because it was not a user-defined typedef.
8232 Except when we have a `typedef' inside a signature, in
8233 which case the type defaults to `unknown type' and is
8234 instantiated when assigning to a signature pointer or ref. */
8236 if (type == NULL_TREE
8237 && (RIDBIT_SETP (RID_SIGNED, specbits)
8238 || RIDBIT_SETP (RID_UNSIGNED, specbits)
8239 || RIDBIT_SETP (RID_LONG, specbits)
8240 || RIDBIT_SETP (RID_SHORT, specbits)))
8242 /* These imply 'int'. */
8243 type = integer_type_node;
8247 if (type == NULL_TREE)
8250 if (return_type == return_dtor)
8251 type = void_type_node;
8252 else if (return_type == return_ctor)
8253 type = build_pointer_type (ctor_return_type);
8254 else if (return_type == return_conversion)
8255 type = ctor_return_type;
8256 else if (current_class_type
8257 && IS_SIGNATURE (current_class_type)
8258 && RIDBIT_SETP (RID_TYPEDEF, specbits)
8259 && (decl_context == FIELD || decl_context == NORMAL))
8263 type = copy_node (opaque_type_node);
8269 if (warn_return_type
8270 && return_type == return_normal)
8271 /* Save warning until we know what is really going on. */
8272 warn_about_return_type = 1;
8274 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8275 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
8276 else if (innermost_code != CALL_EXPR || pedantic
8277 || (warn_return_type && return_type == return_normal))
8279 if (innermost_code == CALL_EXPR)
8280 cp_pedwarn ("return-type of `%D' defaults to `int'", dname);
8282 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
8285 type = integer_type_node;
8288 else if (return_type == return_dtor)
8290 error ("return type specification for destructor invalid");
8291 type = void_type_node;
8293 else if (return_type == return_ctor)
8295 error ("return type specification for constructor invalid");
8296 type = build_pointer_type (ctor_return_type);
8298 else if (return_type == return_conversion)
8300 if (comptypes (type, ctor_return_type, 1) == 0)
8301 cp_error ("operator `%T' declared to return `%T'",
8302 ctor_return_type, type);
8304 cp_pedwarn ("return type specified for `operator %T'",
8307 type = ctor_return_type;
8312 /* Now process the modifiers that were specified
8313 and check for invalid combinations. */
8315 /* Long double is a special combination. */
8317 if (RIDBIT_SETP (RID_LONG, specbits)
8318 && TYPE_MAIN_VARIANT (type) == double_type_node)
8320 RIDBIT_RESET (RID_LONG, specbits);
8321 type = build_type_variant (long_double_type_node, TYPE_READONLY (type),
8322 TYPE_VOLATILE (type));
8325 /* Check all other uses of type modifiers. */
8327 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
8328 || RIDBIT_SETP (RID_SIGNED, specbits)
8329 || RIDBIT_SETP (RID_LONG, specbits)
8330 || RIDBIT_SETP (RID_SHORT, specbits))
8334 if (TREE_CODE (type) == REAL_TYPE)
8335 error ("short, signed or unsigned invalid for `%s'", name);
8336 else if (TREE_CODE (type) != INTEGER_TYPE)
8337 error ("long, short, signed or unsigned invalid for `%s'", name);
8338 else if (RIDBIT_SETP (RID_LONG, specbits)
8339 && RIDBIT_SETP (RID_SHORT, specbits))
8340 error ("long and short specified together for `%s'", name);
8341 else if ((RIDBIT_SETP (RID_LONG, specbits)
8342 || RIDBIT_SETP (RID_SHORT, specbits))
8344 error ("long or short specified with char for `%s'", name);
8345 else if ((RIDBIT_SETP (RID_LONG, specbits)
8346 || RIDBIT_SETP (RID_SHORT, specbits))
8347 && TREE_CODE (type) == REAL_TYPE)
8348 error ("long or short specified with floating type for `%s'", name);
8349 else if (RIDBIT_SETP (RID_SIGNED, specbits)
8350 && RIDBIT_SETP (RID_UNSIGNED, specbits))
8351 error ("signed and unsigned given together for `%s'", name);
8355 if (!explicit_int && !defaulted_int && !explicit_char && pedantic)
8357 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8359 if (flag_pedantic_errors)
8364 /* Discard the type modifiers if they are invalid. */
8367 RIDBIT_RESET (RID_UNSIGNED, specbits);
8368 RIDBIT_RESET (RID_SIGNED, specbits);
8369 RIDBIT_RESET (RID_LONG, specbits);
8370 RIDBIT_RESET (RID_SHORT, specbits);
8375 if (RIDBIT_SETP (RID_COMPLEX, specbits)
8376 && TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE)
8378 error ("complex invalid for `%s'", name);
8379 RIDBIT_RESET (RID_COMPLEX, specbits);
8382 /* Decide whether an integer type is signed or not.
8383 Optionally treat bitfields as signed by default. */
8384 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
8385 || (bitfield && ! flag_signed_bitfields
8386 && (explicit_int || defaulted_int || explicit_char
8387 /* A typedef for plain `int' without `signed'
8388 can be controlled just like plain `int'. */
8389 || ! (typedef_decl != NULL_TREE
8390 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
8391 && TREE_CODE (type) != ENUMERAL_TYPE
8392 && RIDBIT_NOTSETP (RID_SIGNED, specbits)))
8395 type = long_long_unsigned_type_node;
8396 else if (RIDBIT_SETP (RID_LONG, specbits))
8397 type = long_unsigned_type_node;
8398 else if (RIDBIT_SETP (RID_SHORT, specbits))
8399 type = short_unsigned_type_node;
8400 else if (type == char_type_node)
8401 type = unsigned_char_type_node;
8402 else if (typedef_decl)
8403 type = unsigned_type (type);
8405 type = unsigned_type_node;
8407 else if (RIDBIT_SETP (RID_SIGNED, specbits)
8408 && type == char_type_node)
8409 type = signed_char_type_node;
8411 type = long_long_integer_type_node;
8412 else if (RIDBIT_SETP (RID_LONG, specbits))
8413 type = long_integer_type_node;
8414 else if (RIDBIT_SETP (RID_SHORT, specbits))
8415 type = short_integer_type_node;
8417 if (RIDBIT_SETP (RID_COMPLEX, specbits))
8419 /* If we just have "complex", it is equivalent to
8420 "complex double", but if any modifiers at all are specified it is
8421 the complex form of TYPE. E.g, "complex short" is
8422 "complex short int". */
8424 if (defaulted_int && ! longlong
8425 && ! (RIDBIT_SETP (RID_LONG, specbits)
8426 || RIDBIT_SETP (RID_SHORT, specbits)
8427 || RIDBIT_SETP (RID_SIGNED, specbits)
8428 || RIDBIT_SETP (RID_UNSIGNED, specbits)))
8429 type = complex_double_type_node;
8430 else if (type == integer_type_node)
8431 type = complex_integer_type_node;
8432 else if (type == float_type_node)
8433 type = complex_float_type_node;
8434 else if (type == double_type_node)
8435 type = complex_double_type_node;
8436 else if (type == long_double_type_node)
8437 type = complex_long_double_type_node;
8439 type = build_complex_type (type);
8442 if (return_type == return_conversion
8443 && (RIDBIT_SETP (RID_CONST, specbits)
8444 || RIDBIT_SETP (RID_VOLATILE, specbits)))
8445 cp_error ("`operator %T' cannot be cv-qualified",
8448 /* Set CONSTP if this declaration is `const', whether by
8449 explicit specification or via a typedef.
8450 Likewise for VOLATILEP. */
8452 constp = !! RIDBIT_SETP (RID_CONST, specbits) + TYPE_READONLY (type);
8453 volatilep = !! RIDBIT_SETP (RID_VOLATILE, specbits) + TYPE_VOLATILE (type);
8454 type = build_type_variant (type, 0, 0);
8456 inlinep = !! RIDBIT_SETP (RID_INLINE, specbits);
8457 virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits);
8458 RIDBIT_RESET (RID_VIRTUAL, specbits);
8459 explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0;
8460 RIDBIT_RESET (RID_EXPLICIT, specbits);
8462 if (RIDBIT_SETP (RID_STATIC, specbits))
8463 staticp = 1 + (decl_context == FIELD);
8465 if (virtualp && staticp == 2)
8467 cp_error ("member `%D' cannot be declared both virtual and static",
8471 friendp = RIDBIT_SETP (RID_FRIEND, specbits);
8472 RIDBIT_RESET (RID_FRIEND, specbits);
8474 if (RIDBIT_SETP (RID_MUTABLE, specbits))
8476 if (decl_context == PARM)
8478 error ("non-member `%s' cannot be declared `mutable'", name);
8479 RIDBIT_RESET (RID_MUTABLE, specbits);
8481 else if (friendp || decl_context == TYPENAME)
8483 error ("non-object member `%s' cannot be declared `mutable'", name);
8484 RIDBIT_RESET (RID_MUTABLE, specbits);
8488 /* Warn if two storage classes are given. Default to `auto'. */
8490 if (RIDBIT_ANY_SET (specbits))
8492 if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++;
8493 if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++;
8494 if (decl_context == PARM && nclasses > 0)
8495 error ("storage class specifiers invalid in parameter declarations");
8496 if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8498 if (decl_context == PARM)
8499 error ("typedef declaration invalid in parameter declaration");
8502 if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++;
8503 if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++;
8506 /* Give error if `virtual' is used outside of class declaration. */
8508 && (current_class_name == NULL_TREE || decl_context != FIELD))
8510 error ("virtual outside class declaration");
8513 if (current_class_name == NULL_TREE && RIDBIT_SETP (RID_MUTABLE, specbits))
8515 error ("only members can be declared mutable");
8516 RIDBIT_RESET (RID_MUTABLE, specbits);
8519 /* Static anonymous unions are dealt with here. */
8520 if (staticp && decl_context == TYPENAME
8521 && TREE_CODE (declspecs) == TREE_LIST
8522 && TREE_CODE (TREE_VALUE (declspecs)) == UNION_TYPE
8523 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (TREE_VALUE (declspecs))))
8524 decl_context = FIELD;
8526 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
8527 is used in a signature member function declaration. */
8528 if (decl_context == FIELD
8529 && IS_SIGNATURE (current_class_type)
8530 && RIDBIT_NOTSETP (RID_TYPEDEF, specbits))
8534 error ("`const' specified for signature member function `%s'", name);
8539 error ("`volatile' specified for signature member function `%s'",
8545 error ("`inline' specified for signature member function `%s'", name);
8546 /* Later, we'll make signature member functions inline. */
8551 error ("`friend' declaration in signature definition");
8556 error ("`virtual' specified for signature member function `%s'",
8558 /* Later, we'll make signature member functions virtual. */
8563 /* Warn about storage classes that are invalid for certain
8564 kinds of declarations (parameters, typenames, etc.). */
8567 error ("multiple storage classes in declaration of `%s'", name);
8568 else if (decl_context != NORMAL && nclasses > 0)
8570 if ((decl_context == PARM || decl_context == CATCHPARM)
8571 && (RIDBIT_SETP (RID_REGISTER, specbits)
8572 || RIDBIT_SETP (RID_AUTO, specbits)))
8574 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8576 else if (decl_context == FIELD
8577 && ! IS_SIGNATURE (current_class_type)
8578 /* C++ allows static class elements */
8579 && RIDBIT_SETP (RID_STATIC, specbits))
8580 /* C++ also allows inlines and signed and unsigned elements,
8581 but in those cases we don't come in here. */
8585 if (decl_context == FIELD)
8587 tree tmp = NULL_TREE;
8588 register int op = 0;
8592 /* Avoid trying to get an operand off an identifier node. */
8593 if (TREE_CODE (declarator) == IDENTIFIER_NODE)
8596 tmp = TREE_OPERAND (declarator, 0);
8597 op = IDENTIFIER_OPNAME_P (tmp);
8599 error ("storage class specified for %s `%s'",
8600 IS_SIGNATURE (current_class_type)
8602 ? "signature member operator"
8603 : "signature member function")
8604 : (op ? "member operator" : "field"),
8605 op ? operator_name_string (tmp) : name);
8608 error (((decl_context == PARM || decl_context == CATCHPARM)
8609 ? "storage class specified for parameter `%s'"
8610 : "storage class specified for typename"), name);
8611 RIDBIT_RESET (RID_REGISTER, specbits);
8612 RIDBIT_RESET (RID_AUTO, specbits);
8613 RIDBIT_RESET (RID_EXTERN, specbits);
8615 if (decl_context == FIELD && IS_SIGNATURE (current_class_type))
8617 RIDBIT_RESET (RID_STATIC, specbits);
8622 else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag)
8624 if (toplevel_bindings_p ())
8626 /* It's common practice (and completely valid) to have a const
8627 be initialized and declared extern. */
8629 warning ("`%s' initialized and declared `extern'", name);
8632 error ("`%s' has both `extern' and initializer", name);
8634 else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag
8635 && ! toplevel_bindings_p ())
8636 error ("nested function `%s' declared `extern'", name);
8637 else if (toplevel_bindings_p ())
8639 if (RIDBIT_SETP (RID_AUTO, specbits))
8640 error ("top-level declaration of `%s' specifies `auto'", name);
8643 if (nclasses > 0 && friendp)
8644 error ("storage class specifiers invalid in friend function declarations");
8646 /* Now figure out the structure of the declarator proper.
8647 Descend through it, creating more complex types, until we reach
8648 the declared identifier (or NULL_TREE, in an absolute declarator). */
8650 while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE
8651 && TREE_CODE (declarator) != TEMPLATE_ID_EXPR)
8653 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
8654 an INDIRECT_REF (for *...),
8655 a CALL_EXPR (for ...(...)),
8656 an identifier (for the name being declared)
8657 or a null pointer (for the place in an absolute declarator
8658 where the name was omitted).
8659 For the last two cases, we have just exited the loop.
8661 For C++ it could also be
8662 a SCOPE_REF (for class :: ...). In this case, we have converted
8663 sensible names to types, and those are the values we use to
8664 qualify the member name.
8665 an ADDR_EXPR (for &...),
8666 a BIT_NOT_EXPR (for destructors)
8668 At this point, TYPE is the type of elements of an array,
8669 or for a function to return, or for a pointer to point to.
8670 After this sequence of ifs, TYPE is the type of the
8671 array or function or pointer, and DECLARATOR has had its
8672 outermost layer removed. */
8674 if (type == error_mark_node)
8676 if (TREE_CODE (declarator) == SCOPE_REF)
8677 declarator = TREE_OPERAND (declarator, 1);
8679 declarator = TREE_OPERAND (declarator, 0);
8682 if (quals != NULL_TREE
8683 && (declarator == NULL_TREE
8684 || TREE_CODE (declarator) != SCOPE_REF))
8686 if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE)
8687 ctype = TYPE_METHOD_BASETYPE (type);
8688 if (ctype != NULL_TREE)
8690 tree dummy = build_decl (TYPE_DECL, NULL_TREE, type);
8691 ctype = grok_method_quals (ctype, dummy, quals);
8692 type = TREE_TYPE (dummy);
8696 switch (TREE_CODE (declarator))
8700 register tree itype = NULL_TREE;
8701 register tree size = TREE_OPERAND (declarator, 1);
8702 /* The index is a signed object `sizetype' bits wide. */
8703 tree index_type = signed_type (sizetype);
8705 declarator = TREE_OPERAND (declarator, 0);
8707 /* Check for some types that there cannot be arrays of. */
8709 if (TREE_CODE (type) == VOID_TYPE)
8711 cp_error ("declaration of `%D' as array of voids", dname);
8712 type = error_mark_node;
8715 if (TREE_CODE (type) == FUNCTION_TYPE)
8717 cp_error ("declaration of `%D' as array of functions", dname);
8718 type = error_mark_node;
8721 /* ARM $8.4.3: Since you can't have a pointer to a reference,
8722 you can't have arrays of references. If we allowed them,
8723 then we'd be saying x[i] is valid for an array x, but
8724 then you'd have to ask: what does `*(x + i)' mean? */
8725 if (TREE_CODE (type) == REFERENCE_TYPE)
8727 if (decl_context == TYPENAME)
8728 cp_error ("cannot make arrays of references");
8730 cp_error ("declaration of `%D' as array of references",
8732 type = error_mark_node;
8735 if (TREE_CODE (type) == OFFSET_TYPE)
8737 cp_error ("declaration of `%D' as array of data members",
8739 type = error_mark_node;
8742 if (TREE_CODE (type) == METHOD_TYPE)
8744 cp_error ("declaration of `%D' as array of function members",
8746 type = error_mark_node;
8749 if (size == error_mark_node)
8750 type = error_mark_node;
8752 if (type == error_mark_node)
8757 /* Must suspend_momentary here because the index
8758 type may need to live until the end of the function.
8759 For example, it is used in the declaration of a
8760 variable which requires destructing at the end of
8761 the function; then build_vec_delete will need this
8763 int yes = suspend_momentary ();
8764 /* might be a cast */
8765 if (TREE_CODE (size) == NOP_EXPR
8766 && TREE_TYPE (size) == TREE_TYPE (TREE_OPERAND (size, 0)))
8767 size = TREE_OPERAND (size, 0);
8769 /* If this involves a template parameter, it'll be
8770 constant, but we don't know what the value is yet. */
8771 if (processing_template_decl)
8773 itype = make_node (INTEGER_TYPE);
8774 TYPE_MIN_VALUE (itype) = size_zero_node;
8775 TYPE_MAX_VALUE (itype) = build_min
8776 (MINUS_EXPR, sizetype, size, integer_one_node);
8777 goto dont_grok_size;
8780 if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE
8781 && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE)
8783 cp_error ("size of array `%D' has non-integer type",
8785 size = integer_one_node;
8787 if (TREE_READONLY_DECL_P (size))
8788 size = decl_constant_value (size);
8789 if (pedantic && integer_zerop (size))
8790 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname);
8791 if (TREE_CONSTANT (size))
8793 int old_flag_pedantic_errors = flag_pedantic_errors;
8794 int old_pedantic = pedantic;
8795 pedantic = flag_pedantic_errors = 1;
8796 /* Always give overflow errors on array subscripts. */
8797 constant_expression_warning (size);
8798 pedantic = old_pedantic;
8799 flag_pedantic_errors = old_flag_pedantic_errors;
8800 if (INT_CST_LT (size, integer_zero_node))
8802 cp_error ("size of array `%D' is negative", dname);
8803 size = integer_one_node;
8811 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
8814 cp_pedwarn ("ANSI C++ forbids variable-size array");
8819 = fold (build_binary_op (MINUS_EXPR,
8820 cp_convert (index_type, size),
8821 cp_convert (index_type,
8822 integer_one_node), 1));
8823 if (! TREE_CONSTANT (itype))
8824 itype = variable_size (itype);
8825 else if (TREE_OVERFLOW (itype))
8827 error ("overflow in array dimension");
8828 TREE_OVERFLOW (itype) = 0;
8831 /* If we're a parm, we need to have a permanent type so
8832 mangling checks for re-use will work right. If both the
8833 element and index types are permanent, the array type
8835 if (decl_context == PARM
8836 && allocation_temporary_p () && TREE_PERMANENT (type))
8838 push_obstacks (&permanent_obstack, &permanent_obstack);
8839 itype = build_index_type (itype);
8843 itype = build_index_type (itype);
8846 resume_momentary (yes);
8849 /* Build the array type itself, then merge any constancy or
8850 volatility into the target type. We must do it in this order
8851 to ensure that the TYPE_MAIN_VARIANT field of the array type
8852 is set correctly. */
8854 type = build_cplus_array_type (type, itype);
8855 if (constp || volatilep)
8856 type = cp_build_type_variant (type, constp, volatilep);
8866 tree inner_parms = TREE_OPERAND (declarator, 1);
8867 tree inner_decl = TREE_OPERAND (declarator, 0);
8869 /* Declaring a function type.
8870 Make sure we have a valid type for the function to return. */
8872 /* Is this an error? Should they be merged into TYPE here? */
8873 if (pedantic && (constp || volatilep))
8874 pedwarn ("function declared to return const or volatile result");
8876 /* Merge any constancy or volatility into the function return
8879 if (constp || volatilep)
8881 type = cp_build_type_variant (type, constp, volatilep);
8882 if (IS_AGGR_TYPE (type))
8883 build_pointer_type (type);
8889 /* Warn about some types functions can't return. */
8891 if (TREE_CODE (type) == FUNCTION_TYPE)
8893 error ("`%s' declared as function returning a function", name);
8894 type = integer_type_node;
8896 if (TREE_CODE (type) == ARRAY_TYPE)
8898 error ("`%s' declared as function returning an array", name);
8899 type = integer_type_node;
8902 if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF)
8903 inner_decl = TREE_OPERAND (inner_decl, 1);
8905 if (inner_decl && TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR)
8908 /* Pick up type qualifiers which should be applied to `this'. */
8909 quals = TREE_OPERAND (declarator, 2);
8911 /* Pick up the exception specifications. */
8912 raises = TREE_TYPE (declarator);
8914 /* Say it's a definition only for the CALL_EXPR
8915 closest to the identifier. */
8918 && (TREE_CODE (inner_decl) == IDENTIFIER_NODE
8919 || TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR
8920 || TREE_CODE (inner_decl) == BIT_NOT_EXPR);
8922 if (ctype == NULL_TREE
8923 && decl_context == FIELD
8925 && (friendp == 0 || dname == current_class_name))
8926 ctype = current_class_type;
8928 if (ctype && return_type == return_conversion)
8929 TYPE_HAS_CONVERSION (ctype) = 1;
8930 if (ctype && constructor_name (ctype) == dname)
8932 /* We are within a class's scope. If our declarator name
8933 is the same as the class name, and we are defining
8934 a function, then it is a constructor/destructor, and
8935 therefore returns a void type. */
8937 if (flags == DTOR_FLAG)
8939 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
8940 not be declared const or volatile. A destructor
8941 may not be static. */
8943 error ("destructor cannot be static member function");
8946 error ("destructors cannot be declared `const' or `volatile'");
8947 return void_type_node;
8949 if (decl_context == FIELD)
8951 if (! member_function_or_else (ctype, current_class_type,
8952 "destructor for alien class `%s' cannot be a member"))
8953 return void_type_node;
8956 else /* it's a constructor. */
8960 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
8961 not be declared const or volatile. A constructor may
8962 not be virtual. A constructor may not be static. */
8964 error ("constructor cannot be static member function");
8967 pedwarn ("constructors cannot be declared virtual");
8972 error ("constructors cannot be declared `const' or `volatile'");
8973 return void_type_node;
8976 RID_BIT_TYPE tmp_bits;
8977 bcopy ((void*)&specbits, (void*)&tmp_bits, sizeof (RID_BIT_TYPE));
8978 RIDBIT_RESET (RID_INLINE, tmp_bits);
8979 RIDBIT_RESET (RID_STATIC, tmp_bits);
8980 if (RIDBIT_ANY_SET (tmp_bits))
8981 error ("return value type specifier for constructor ignored");
8983 type = build_pointer_type (ctype);
8984 if (decl_context == FIELD
8985 && IS_SIGNATURE (current_class_type))
8987 error ("constructor not allowed in signature");
8988 return void_type_node;
8990 else if (decl_context == FIELD)
8992 if (! member_function_or_else (ctype, current_class_type,
8993 "constructor for alien class `%s' cannot be member"))
8994 return void_type_node;
8995 TYPE_HAS_CONSTRUCTOR (ctype) = 1;
8996 if (return_type != return_ctor)
9000 if (decl_context == FIELD)
9006 error ("can't initialize friend function `%s'", name);
9009 /* Cannot be both friend and virtual. */
9010 error ("virtual functions cannot be friends");
9011 RIDBIT_RESET (RID_FRIEND, specbits);
9014 if (decl_context == NORMAL)
9015 error ("friend declaration not in class definition");
9016 if (current_function_decl && funcdef_flag)
9017 cp_error ("can't define friend function `%s' in a local class definition",
9021 /* Construct the function type and go to the next
9022 inner layer of declarator. */
9024 declarator = TREE_OPERAND (declarator, 0);
9026 /* FIXME: This is where default args should be fully
9029 arg_types = grokparms (inner_parms, funcdecl_p ? funcdef_flag : 0);
9033 /* Get past destructors, etc.
9034 We know we have one because FLAGS will be non-zero.
9036 Complain about improper parameter lists here. */
9037 if (TREE_CODE (declarator) == BIT_NOT_EXPR)
9039 declarator = TREE_OPERAND (declarator, 0);
9041 if (strict_prototype == 0 && arg_types == NULL_TREE)
9042 arg_types = void_list_node;
9043 else if (arg_types == NULL_TREE
9044 || arg_types != void_list_node)
9046 error ("destructors cannot be specified with parameters");
9047 arg_types = void_list_node;
9052 /* ANSI says that `const int foo ();'
9053 does not make the function foo const. */
9054 type = build_function_type (type, arg_types);
9058 for (t = arg_types; t; t = TREE_CHAIN (t))
9059 if (TREE_PURPOSE (t)
9060 && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
9062 add_defarg_fn (type);
9071 /* Filter out pointers-to-references and references-to-references.
9072 We can get these if a TYPE_DECL is used. */
9074 if (TREE_CODE (type) == REFERENCE_TYPE)
9076 error ("cannot declare %s to references",
9077 TREE_CODE (declarator) == ADDR_EXPR
9078 ? "references" : "pointers");
9079 declarator = TREE_OPERAND (declarator, 0);
9083 if (TREE_CODE (type) == OFFSET_TYPE
9084 && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE
9085 || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE))
9087 cp_error ("cannot declare pointer to `%#T' member",
9089 type = TREE_TYPE (type);
9092 /* Merge any constancy or volatility into the target type
9095 if (constp || volatilep)
9097 /* A const or volatile signature pointer/reference is
9098 pointing to a const or volatile object, i.e., the
9099 `optr' is const or volatile, respectively, not the
9100 signature pointer/reference itself. */
9101 if (! IS_SIGNATURE (type))
9103 type = cp_build_type_variant (type, constp, volatilep);
9104 if (IS_AGGR_TYPE (type))
9105 build_pointer_type (type);
9111 if (IS_SIGNATURE (type))
9113 if (TREE_CODE (declarator) == ADDR_EXPR)
9115 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
9116 && TYPE_SIZE (type))
9117 cp_warning ("empty signature `%T' used in signature reference declaration",
9120 type = build_signature_reference_type (type,
9123 sorry ("signature reference");
9129 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
9130 && TYPE_SIZE (type))
9131 cp_warning ("empty signature `%T' used in signature pointer declaration",
9133 type = build_signature_pointer_type (type,
9139 else if (TREE_CODE (declarator) == ADDR_EXPR)
9141 if (TREE_CODE (type) == FUNCTION_TYPE)
9143 error ("cannot declare references to functions; use pointer to function instead");
9144 type = build_pointer_type (type);
9148 if (TREE_CODE (type) == VOID_TYPE)
9149 error ("invalid type: `void &'");
9151 type = build_reference_type (type);
9154 else if (TREE_CODE (type) == METHOD_TYPE)
9156 type = build_ptrmemfunc_type (build_pointer_type (type));
9159 type = build_pointer_type (type);
9161 /* Process a list of type modifier keywords (such as
9162 const or volatile) that were given inside the `*' or `&'. */
9164 if (TREE_TYPE (declarator))
9166 register tree typemodlist;
9168 for (typemodlist = TREE_TYPE (declarator); typemodlist;
9169 typemodlist = TREE_CHAIN (typemodlist))
9171 if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_CONST])
9173 else if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_VOLATILE])
9178 error ("invalid type modifier within %s declarator",
9179 TREE_CODE (declarator) == ADDR_EXPR
9180 ? "reference" : "pointer");
9184 pedwarn ("duplicate `const'");
9186 pedwarn ("duplicate `volatile'");
9187 if (TREE_CODE (declarator) == ADDR_EXPR
9188 && (constp || volatilep))
9191 pedwarn ("discarding `const' applied to a reference");
9193 pedwarn ("discarding `volatile' applied to a reference");
9194 constp = volatilep = 0;
9197 declarator = TREE_OPERAND (declarator, 0);
9203 /* We have converted type names to NULL_TREE if the
9204 name was bogus, or to a _TYPE node, if not.
9206 The variable CTYPE holds the type we will ultimately
9207 resolve to. The code here just needs to build
9208 up appropriate member types. */
9209 tree sname = TREE_OPERAND (declarator, 1);
9212 /* Destructors can have their visibilities changed as well. */
9213 if (TREE_CODE (sname) == BIT_NOT_EXPR)
9214 sname = TREE_OPERAND (sname, 0);
9216 if (TREE_COMPLEXITY (declarator) == 0)
9217 /* This needs to be here, in case we are called
9218 multiple times. */ ;
9219 else if (friendp && (TREE_COMPLEXITY (declarator) < 2))
9220 /* don't fall out into global scope. Hides real bug? --eichin */ ;
9221 else if (! IS_AGGR_TYPE_CODE
9222 (TREE_CODE (TREE_OPERAND (declarator, 0))))
9224 else if (TREE_COMPLEXITY (declarator) == current_class_depth)
9226 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9227 that refer to ctype. They couldn't be resolved earlier
9228 because we hadn't pushed into the class yet.
9229 Example: resolve 'B<T>::type' in
9230 'B<typename B<T>::type> B<T>::f () { }'. */
9231 if (current_template_parms
9232 && uses_template_parms (type)
9233 && uses_template_parms (current_class_type))
9235 tree args = current_template_args ();
9236 type = tsubst (type, args, NULL_TREE);
9239 /* This pop_nested_class corresponds to the
9240 push_nested_class used to push into class scope for
9241 parsing the argument list of a function decl, in
9243 pop_nested_class (1);
9244 TREE_COMPLEXITY (declarator) = current_class_depth;
9247 my_friendly_abort (16);
9249 if (TREE_OPERAND (declarator, 0) == NULL_TREE)
9251 /* We had a reference to a global decl, or
9252 perhaps we were given a non-aggregate typedef,
9253 in which case we cleared this out, and should just
9254 keep going as though it wasn't there. */
9258 ctype = TREE_OPERAND (declarator, 0);
9261 while (t != NULL_TREE)
9263 if (CLASSTYPE_TEMPLATE_INFO (t) &&
9264 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t))
9265 template_count += 1;
9266 t = TYPE_MAIN_DECL (t);
9267 if (DECL_LANG_SPECIFIC (t))
9268 t = DECL_CLASS_CONTEXT (t);
9273 if (sname == NULL_TREE)
9276 if (TREE_CODE (sname) == IDENTIFIER_NODE)
9278 /* This is the `standard' use of the scoping operator:
9279 basetype :: member . */
9281 if (ctype == current_class_type)
9287 Is this ill-formed? */
9290 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9293 else if (TREE_CODE (type) == FUNCTION_TYPE)
9295 if (current_class_type == NULL_TREE
9297 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9298 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9301 cp_error ("cannot declare member function `%T::%s' within `%T'",
9302 ctype, name, current_class_type);
9303 return void_type_node;
9306 else if (RIDBIT_SETP (RID_TYPEDEF, specbits)
9307 || TYPE_SIZE (complete_type (ctype)) != NULL_TREE)
9309 /* have to move this code elsewhere in this function.
9310 this code is used for i.e., typedef int A::M; M *pm;
9312 It is? How? jason 10/2/94 */
9314 if (current_class_type)
9316 cp_error ("cannot declare member `%T::%s' within `%T'",
9317 ctype, name, current_class_type);
9318 return void_type_node;
9320 type = build_offset_type (ctype, type);
9322 else if (uses_template_parms (ctype))
9324 if (TREE_CODE (type) == FUNCTION_TYPE)
9326 = build_cplus_method_type (build_type_variant (ctype,
9330 TYPE_ARG_TYPES (type));
9334 cp_error ("structure `%T' not yet defined", ctype);
9335 return error_mark_node;
9340 else if (TREE_CODE (sname) == SCOPE_REF)
9341 my_friendly_abort (17);
9345 declarator = TREE_OPERAND (declarator, 1);
9346 if (declarator && TREE_CODE (declarator) == CALL_EXPR)
9347 /* In this case, we will deal with it later. */
9351 if (TREE_CODE (type) == FUNCTION_TYPE)
9352 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), TREE_TYPE (type), TYPE_ARG_TYPES (type));
9354 type = build_offset_type (ctype, type);
9361 declarator = TREE_OPERAND (declarator, 0);
9367 declarator = NULL_TREE;
9371 declarator = NULL_TREE;
9375 my_friendly_abort (158);
9381 error ("only constructors can be declared `explicit'");
9385 /* Now TYPE has the actual type. */
9387 /* If this is declaring a typedef name, return a TYPE_DECL. */
9389 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9393 error ("const `%s' cannot be declared `mutable'", name);
9394 RIDBIT_RESET (RID_MUTABLE, specbits);
9398 error ("static `%s' cannot be declared `mutable'", name);
9399 RIDBIT_RESET (RID_MUTABLE, specbits);
9403 if (RIDBIT_SETP (RID_TYPEDEF, specbits) && decl_context != TYPENAME)
9407 /* Note that the grammar rejects storage classes
9408 in typenames, fields or parameters. */
9409 if (constp || volatilep)
9410 type = cp_build_type_variant (type, constp, volatilep);
9412 if (decl_context == FIELD)
9414 if (declarator == current_class_name)
9415 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
9417 decl = build_lang_decl (TYPE_DECL, declarator, type);
9418 if (IS_SIGNATURE (current_class_type) && opaque_typedef)
9419 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type) = 1;
9421 else if (current_lang_name == lang_name_java)
9422 decl = build_lang_decl (TYPE_DECL, declarator, type);
9424 decl = build_decl (TYPE_DECL, declarator, type);
9426 /* If the user declares "struct {...} foo" then `foo' will have
9427 an anonymous name. Fill that name in now. Nothing can
9428 refer to it, so nothing needs know about the name change.
9429 The TYPE_NAME field was filled in by build_struct_xref. */
9430 if (type != error_mark_node
9432 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
9433 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type)))
9435 /* replace the anonymous name with the real name everywhere. */
9436 lookup_tag_reverse (type, declarator);
9437 TYPE_NAME (type) = decl;
9439 if (TYPE_LANG_SPECIFIC (type))
9440 TYPE_WAS_ANONYMOUS (type) = 1;
9442 DECL_ASSEMBLER_NAME (decl) = DECL_NAME (decl);
9443 DECL_ASSEMBLER_NAME (decl)
9444 = get_identifier (build_overload_name (type, 1, 1));
9447 if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE)
9449 cp_error_at ("typedef name may not be class-qualified", decl);
9454 if (ctype == NULL_TREE)
9456 if (TREE_CODE (type) != METHOD_TYPE)
9457 cp_error_at ("invalid type qualifier for non-method type", decl);
9459 ctype = TYPE_METHOD_BASETYPE (type);
9461 if (ctype != NULL_TREE)
9462 grok_method_quals (ctype, decl, quals);
9465 if (RIDBIT_SETP (RID_SIGNED, specbits)
9466 || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
9467 C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
9469 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9471 error ("non-object member `%s' cannot be declared mutable", name);
9474 bad_specifiers (decl, "type", virtualp, quals != NULL_TREE,
9475 inlinep, friendp, raises != NULL_TREE);
9478 error ("typedef declaration includes an initializer");
9483 /* Detect the case of an array type of unspecified size
9484 which came, as such, direct from a typedef name.
9485 We must copy the type, so that each identifier gets
9486 a distinct type, so that each identifier's size can be
9487 controlled separately by its own initializer. */
9489 if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE
9490 && TYPE_DOMAIN (type) == NULL_TREE)
9492 type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type));
9495 /* If this is a type name (such as, in a cast or sizeof),
9496 compute the type and return it now. */
9498 if (decl_context == TYPENAME)
9500 /* Note that the grammar rejects storage classes
9501 in typenames, fields or parameters. */
9502 if (constp || volatilep)
9504 if (IS_SIGNATURE (type))
9505 error ("`const' or `volatile' specified with signature type");
9507 type = cp_build_type_variant (type, constp, volatilep);
9510 /* Special case: "friend class foo" looks like a TYPENAME context. */
9515 cp_error ("`volatile' specified for friend class declaration");
9520 cp_error ("`inline' specified for friend class declaration");
9524 /* Only try to do this stuff if we didn't already give up. */
9525 if (type != integer_type_node)
9527 /* A friendly class? */
9528 if (current_class_type)
9529 make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type));
9531 error ("trying to make class `%s' a friend of global scope",
9532 TYPE_NAME_STRING (type));
9533 type = void_type_node;
9538 tree dummy = build_decl (TYPE_DECL, declarator, type);
9539 if (ctype == NULL_TREE)
9541 my_friendly_assert (TREE_CODE (type) == METHOD_TYPE, 159);
9542 ctype = TYPE_METHOD_BASETYPE (type);
9544 grok_method_quals (ctype, dummy, quals);
9545 type = TREE_TYPE (dummy);
9550 else if (declarator == NULL_TREE && decl_context != PARM
9551 && decl_context != CATCHPARM
9552 && TREE_CODE (type) != UNION_TYPE
9555 cp_error ("abstract declarator `%T' used as declaration", type);
9556 declarator = make_anon_name ();
9559 /* `void' at top level (not within pointer)
9560 is allowed only in typedefs or type names.
9561 We don't complain about parms either, but that is because
9562 a better error message can be made later. */
9564 if (TREE_CODE (type) == VOID_TYPE && decl_context != PARM)
9567 error ("unnamed variable or field declared void");
9568 else if (TREE_CODE (declarator) == IDENTIFIER_NODE)
9570 if (IDENTIFIER_OPNAME_P (declarator))
9571 my_friendly_abort (356);
9573 error ("variable or field `%s' declared void", name);
9576 error ("variable or field declared void");
9577 type = integer_type_node;
9580 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
9581 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
9586 if (decl_context == PARM)
9589 error ("cannot use `::' in parameter declaration");
9591 /* A parameter declared as an array of T is really a pointer to T.
9592 One declared as a function is really a pointer to a function.
9593 One declared as a member is really a pointer to member. */
9595 if (TREE_CODE (type) == ARRAY_TYPE)
9597 /* Transfer const-ness of array into that of type pointed to. */
9598 type = build_pointer_type
9599 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
9600 volatilep = constp = 0;
9602 else if (TREE_CODE (type) == FUNCTION_TYPE)
9603 type = build_pointer_type (type);
9604 else if (TREE_CODE (type) == OFFSET_TYPE)
9605 type = build_pointer_type (type);
9606 else if (TREE_CODE (type) == VOID_TYPE && declarator)
9608 error ("declaration of `%s' as void", name);
9612 decl = build_decl (PARM_DECL, declarator, complete_type (type));
9614 bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE,
9615 inlinep, friendp, raises != NULL_TREE);
9616 if (current_class_type
9617 && IS_SIGNATURE (current_class_type))
9620 error ("parameter of signature member function declared `inline'");
9621 if (RIDBIT_SETP (RID_AUTO, specbits))
9622 error ("parameter of signature member function declared `auto'");
9623 if (RIDBIT_SETP (RID_REGISTER, specbits))
9624 error ("parameter of signature member function declared `register'");
9627 /* Compute the type actually passed in the parmlist,
9628 for the case where there is no prototype.
9629 (For example, shorts and chars are passed as ints.)
9630 When there is a prototype, this is overridden later. */
9632 DECL_ARG_TYPE (decl) = type_promotes_to (type);
9634 else if (decl_context == FIELD)
9636 if (type == error_mark_node)
9638 /* Happens when declaring arrays of sizes which
9639 are error_mark_node, for example. */
9642 else if (TREE_CODE (type) == FUNCTION_TYPE)
9645 tree function_context;
9647 /* We catch the others as conflicts with the builtin
9649 if (friendp && declarator == ridpointers[(int) RID_SIGNED])
9651 cp_error ("function `%D' cannot be declared friend",
9658 if (ctype == NULL_TREE)
9659 ctype = current_class_type;
9661 if (ctype == NULL_TREE)
9663 cp_error ("can't make `%D' into a method -- not in a class",
9665 return void_type_node;
9668 /* ``A union may [ ... ] not [ have ] virtual functions.''
9670 if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
9672 cp_error ("function `%D' declared virtual inside a union",
9674 return void_type_node;
9677 if (declarator == ansi_opname[(int) NEW_EXPR]
9678 || declarator == ansi_opname[(int) VEC_NEW_EXPR]
9679 || declarator == ansi_opname[(int) DELETE_EXPR]
9680 || declarator == ansi_opname[(int) VEC_DELETE_EXPR])
9684 cp_error ("`%D' cannot be declared virtual, since it is always static",
9689 else if (staticp < 2)
9690 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9691 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9694 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
9695 function_context = (ctype != NULL_TREE) ?
9696 hack_decl_function_context (TYPE_MAIN_DECL (ctype)) : NULL_TREE;
9697 publicp = (! friendp || ! staticp)
9698 && function_context == NULL_TREE;
9699 decl = grokfndecl (ctype, type,
9700 TREE_CODE (declarator) != TEMPLATE_ID_EXPR
9701 ? declarator : dname,
9703 virtualp, flags, quals, raises, attrlist,
9704 friendp ? -1 : 0, friendp, publicp, inlinep,
9705 funcdef_flag, template_count);
9706 if (decl == NULL_TREE)
9709 /* This clobbers the attrs stored in `decl' from `attrlist'. */
9710 /* The decl and setting of decl_machine_attr is also turned off. */
9711 decl = build_decl_attribute_variant (decl, decl_machine_attr);
9715 DECL_NONCONVERTING_P (decl) = 1;
9717 else if (TREE_CODE (type) == METHOD_TYPE)
9719 /* We only get here for friend declarations of
9720 members of other classes. */
9721 /* All method decls are public, so tell grokfndecl to set
9722 TREE_PUBLIC, also. */
9723 decl = grokfndecl (ctype, type, declarator, declarator,
9724 virtualp, flags, quals, raises, attrlist,
9725 friendp ? -1 : 0, friendp, 1, 0, funcdef_flag,
9727 if (decl == NULL_TREE)
9730 else if (!staticp && ! processing_template_decl
9731 && TYPE_SIZE (complete_type (type)) == NULL_TREE
9732 && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
9735 cp_error ("field `%D' has incomplete type", declarator);
9737 cp_error ("name `%T' has incomplete type", type);
9739 /* If we're instantiating a template, tell them which
9740 instantiation made the field's type be incomplete. */
9741 if (current_class_type
9742 && TYPE_NAME (current_class_type)
9743 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type))
9744 && declspecs && TREE_VALUE (declspecs)
9745 && TREE_TYPE (TREE_VALUE (declspecs)) == type)
9746 cp_error (" in instantiation of template `%T'",
9747 current_class_type);
9749 type = error_mark_node;
9756 error ("`%s' is neither function nor method; cannot be declared friend",
9757 IDENTIFIER_POINTER (declarator));
9765 /* Friends are treated specially. */
9766 if (ctype == current_class_type)
9767 warning ("member functions are implicitly friends of their class");
9771 if (decl && DECL_NAME (decl))
9772 t = do_friend (ctype, declarator, decl,
9773 last_function_parms, flags, quals,
9775 if (t && funcdef_flag)
9778 return void_type_node;
9782 /* Structure field. It may not be a function, except for C++ */
9784 if (decl == NULL_TREE)
9790 /* An attempt is being made to initialize a non-static
9791 member. But, from [class.mem]:
9793 4 A member-declarator can contain a
9794 constant-initializer only if it declares a static
9795 member (_class.static_) of integral or enumeration
9796 type, see _class.static.data_.
9798 This used to be relatively common practice, but
9799 the rest of the compiler does not correctly
9800 handle the initialization unless the member is
9801 static so we make it static below. */
9802 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
9803 constp ? "const member" : "member",
9805 cp_pedwarn ("making `%D' static", declarator);
9809 /* Motion 10 at San Diego: If a static const integral data
9810 member is initialized with an integral constant
9811 expression, the initializer may appear either in the
9812 declaration (within the class), or in the definition,
9813 but not both. If it appears in the class, the member is
9814 a member constant. The file-scope definition is always
9817 /* According to Mike Stump, we generate bad code for
9818 this case, so we might as well always make it an
9820 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
9823 if (pedantic && ! INTEGRAL_TYPE_P (type))
9824 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", declarator, type);
9829 /* ANSI C++ Apr '95 wp 9.2 */
9830 if (declarator == current_class_name)
9831 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
9834 /* C++ allows static class members.
9835 All other work for this is done by grokfield.
9836 This VAR_DECL is built by build_lang_field_decl.
9837 All other VAR_DECLs are built by build_decl. */
9838 decl = build_lang_field_decl (VAR_DECL, declarator, type);
9839 TREE_STATIC (decl) = 1;
9840 /* In class context, 'static' means public access. */
9841 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = 1;
9845 decl = build_lang_field_decl (FIELD_DECL, declarator, type);
9846 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9848 DECL_MUTABLE_P (decl) = 1;
9849 RIDBIT_RESET (RID_MUTABLE, specbits);
9853 bad_specifiers (decl, "field", virtualp, quals != NULL_TREE,
9854 inlinep, friendp, raises != NULL_TREE);
9857 else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE)
9865 if (TREE_CODE (declarator) == TEMPLATE_ID_EXPR)
9866 original_name = dname;
9868 original_name = declarator;
9870 if (RIDBIT_SETP (RID_AUTO, specbits))
9871 error ("storage class `auto' invalid for function `%s'", name);
9872 else if (RIDBIT_SETP (RID_REGISTER, specbits))
9873 error ("storage class `register' invalid for function `%s'", name);
9875 /* Function declaration not at top level.
9876 Storage classes other than `extern' are not allowed
9877 and `extern' makes no difference. */
9878 if (! toplevel_bindings_p ()
9879 && (RIDBIT_SETP (RID_STATIC, specbits)
9880 || RIDBIT_SETP (RID_INLINE, specbits))
9883 if (RIDBIT_SETP (RID_STATIC, specbits))
9884 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name);
9886 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name);
9889 if (ctype == NULL_TREE)
9893 error ("virtual non-class function `%s'", name);
9897 if (current_lang_name == lang_name_cplusplus
9898 && ! processing_template_decl
9899 && ! (IDENTIFIER_LENGTH (original_name) == 4
9900 && IDENTIFIER_POINTER (original_name)[0] == 'm'
9901 && strcmp (IDENTIFIER_POINTER (original_name), "main") == 0)
9902 && ! (IDENTIFIER_LENGTH (original_name) > 10
9903 && IDENTIFIER_POINTER (original_name)[0] == '_'
9904 && IDENTIFIER_POINTER (original_name)[1] == '_'
9905 && strncmp (IDENTIFIER_POINTER (original_name)+2, "builtin_", 8) == 0))
9906 /* Plain overloading: will not be grok'd by grokclassfn. */
9907 if (name_mangling_version < 1
9908 || TREE_CODE (declarator) != TEMPLATE_ID_EXPR)
9909 declarator = build_decl_overload (dname, TYPE_ARG_TYPES (type), 0);
9911 else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2)
9912 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9913 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9915 /* Record presence of `static'. */
9916 publicp = (ctype != NULL_TREE
9917 || RIDBIT_SETP (RID_EXTERN, specbits)
9918 || !RIDBIT_SETP (RID_STATIC, specbits));
9920 decl = grokfndecl (ctype, type, original_name, declarator,
9921 virtualp, flags, quals, raises, attrlist,
9923 publicp, inlinep, funcdef_flag,
9925 if (decl == NULL_TREE)
9928 if (ctype == NULL_TREE && DECL_LANGUAGE (decl) != lang_c
9929 && (! DECL_USE_TEMPLATE (decl) ||
9930 name_mangling_version < 1))
9932 /* XXX is support for the old __ns_ mangling really needed? MvL */
9933 DECL_ASSEMBLER_NAME (decl) = current_namespace_id (declarator);
9935 DECL_ASSEMBLER_NAME (decl) = declarator;
9940 int illegal_static = 0;
9942 /* Don't allow a static member function in a class, and forbid
9943 declaring main to be static. */
9944 if (TREE_CODE (type) == METHOD_TYPE)
9946 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl);
9949 else if (current_function_decl)
9951 /* FIXME need arm citation */
9952 error ("cannot declare static function inside another function");
9959 RIDBIT_RESET (RID_STATIC, specbits);
9965 /* It's a variable. */
9967 if (decl_context == CATCHPARM)
9972 error ("cannot use `::' in parameter declaration");
9975 /* A parameter declared as an array of T is really a pointer to T.
9976 One declared as a function is really a pointer to a function.
9977 One declared as a member is really a pointer to member. */
9979 if (TREE_CODE (type) == ARRAY_TYPE)
9981 /* Transfer const-ness of array into that of type
9983 type = build_pointer_type
9984 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
9985 volatilep = constp = 0;
9987 else if (TREE_CODE (type) == FUNCTION_TYPE)
9988 type = build_pointer_type (type);
9989 else if (TREE_CODE (type) == OFFSET_TYPE)
9990 type = build_pointer_type (type);
9993 /* An uninitialized decl with `extern' is a reference. */
9994 decl = grokvardecl (type, declarator, &specbits, initialized, constp);
9995 bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE,
9996 inlinep, friendp, raises != NULL_TREE);
10000 DECL_CONTEXT (decl) = ctype;
10003 cp_pedwarn ("static member `%D' re-declared as static", decl);
10005 RIDBIT_RESET (RID_STATIC, specbits);
10007 if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl))
10009 cp_error ("static member `%D' declared `register'", decl);
10010 RIDBIT_RESET (RID_REGISTER, specbits);
10012 if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic)
10014 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
10016 RIDBIT_RESET (RID_EXTERN, specbits);
10021 if (RIDBIT_SETP (RID_MUTABLE, specbits))
10023 error ("`%s' cannot be declared mutable", name);
10026 /* Record `register' declaration for warnings on &
10027 and in case doing stupid register allocation. */
10029 if (RIDBIT_SETP (RID_REGISTER, specbits))
10030 DECL_REGISTER (decl) = 1;
10032 if (RIDBIT_SETP (RID_EXTERN, specbits))
10033 DECL_THIS_EXTERN (decl) = 1;
10035 if (RIDBIT_SETP (RID_STATIC, specbits))
10036 DECL_THIS_STATIC (decl) = 1;
10038 /* Record constancy and volatility. */
10041 TREE_READONLY (decl) = TREE_CODE (type) != REFERENCE_TYPE;
10044 TREE_SIDE_EFFECTS (decl) = 1;
10045 TREE_THIS_VOLATILE (decl) = 1;
10052 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
10053 An empty exprlist is a parmlist. An exprlist which
10054 contains only identifiers at the global level
10055 is a parmlist. Otherwise, it is an exprlist. */
10058 parmlist_is_exprlist (exprs)
10061 if (exprs == NULL_TREE || TREE_PARMLIST (exprs))
10064 if (toplevel_bindings_p ())
10066 /* At the global level, if these are all identifiers,
10067 then it is a parmlist. */
10070 if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE)
10072 exprs = TREE_CHAIN (exprs);
10079 /* Subroutine of `grokparms'. In a fcn definition, arg types must
10082 C++: also subroutine of `start_function'. */
10085 require_complete_types_for_parms (parms)
10088 if (processing_template_decl)
10093 tree type = TREE_TYPE (parms);
10094 if (TYPE_SIZE (complete_type (type)) == NULL_TREE)
10096 if (DECL_NAME (parms))
10097 error ("parameter `%s' has incomplete type",
10098 IDENTIFIER_POINTER (DECL_NAME (parms)));
10100 error ("parameter has incomplete type");
10101 TREE_TYPE (parms) = error_mark_node;
10104 /* If the arg types are incomplete in a declaration,
10105 they must include undefined tags.
10106 These tags can never be defined in the scope of the declaration,
10107 so the types can never be completed,
10108 and no call can be compiled successfully. */
10109 /* This is not the right behavior for C++, but not having
10110 it is also probably wrong. */
10113 /* Now warn if is a pointer to an incomplete type. */
10114 while (TREE_CODE (type) == POINTER_TYPE
10115 || TREE_CODE (type) == REFERENCE_TYPE)
10116 type = TREE_TYPE (type);
10117 type = TYPE_MAIN_VARIANT (type);
10118 if (TYPE_SIZE (type) == NULL_TREE)
10120 if (DECL_NAME (parm) != NULL_TREE)
10121 warning ("parameter `%s' points to incomplete type",
10122 IDENTIFIER_POINTER (DECL_NAME (parm)));
10124 warning ("parameter points to incomplete type");
10128 parms = TREE_CHAIN (parms);
10132 /* Decode the list of parameter types for a function type.
10133 Given the list of things declared inside the parens,
10134 return a list of types.
10136 The list we receive can have three kinds of elements:
10137 an IDENTIFIER_NODE for names given without types,
10138 a TREE_LIST node for arguments given as typespecs or names with typespecs,
10139 or void_type_node, to mark the end of an argument list
10140 when additional arguments are not permitted (... was not used).
10142 FUNCDEF_FLAG is nonzero for a function definition, 0 for
10143 a mere declaration. A nonempty identifier-list gets an error message
10144 when FUNCDEF_FLAG is zero.
10145 If FUNCDEF_FLAG is 1, then parameter types must be complete.
10146 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
10148 If all elements of the input list contain types,
10149 we return a list of the types.
10150 If all elements contain no type (except perhaps a void_type_node
10151 at the end), we return a null list.
10152 If some have types and some do not, it is an error, and we
10153 return a null list.
10155 Also set last_function_parms to either
10156 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
10157 A list of names is converted to a chain of PARM_DECLs
10158 by store_parm_decls so that ultimately it is always a chain of decls.
10160 Note that in C++, parameters can take default values. These default
10161 values are in the TREE_PURPOSE field of the TREE_LIST. It is
10162 an error to specify default values which are followed by parameters
10163 that have no default values, or an ELLIPSES. For simplicities sake,
10164 only parameters which are specified with their types can take on
10168 grokparms (first_parm, funcdef_flag)
10172 tree result = NULL_TREE;
10173 tree decls = NULL_TREE;
10175 if (first_parm != NULL_TREE
10176 && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE)
10178 if (! funcdef_flag)
10179 pedwarn ("parameter names (without types) in function declaration");
10180 last_function_parms = first_parm;
10183 else if (first_parm != NULL_TREE
10184 && TREE_CODE (TREE_VALUE (first_parm)) != TREE_LIST
10185 && TREE_CODE (TREE_VALUE (first_parm)) != VOID_TYPE)
10186 my_friendly_abort (145);
10189 /* Types were specified. This is a list of declarators
10190 each represented as a TREE_LIST node. */
10191 register tree parm, chain;
10192 int any_init = 0, any_error = 0;
10194 if (first_parm != NULL_TREE)
10196 tree last_result = NULL_TREE;
10197 tree last_decl = NULL_TREE;
10199 for (parm = first_parm; parm != NULL_TREE; parm = chain)
10201 tree type = NULL_TREE, list_node = parm;
10202 register tree decl = TREE_VALUE (parm);
10203 tree init = TREE_PURPOSE (parm);
10205 chain = TREE_CHAIN (parm);
10206 /* @@ weak defense against parse errors. */
10207 if (TREE_CODE (decl) != VOID_TYPE
10208 && TREE_CODE (decl) != TREE_LIST)
10210 /* Give various messages as the need arises. */
10211 if (TREE_CODE (decl) == STRING_CST)
10212 cp_error ("invalid string constant `%E'", decl);
10213 else if (TREE_CODE (decl) == INTEGER_CST)
10214 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10218 if (TREE_CODE (decl) != VOID_TYPE)
10220 decl = grokdeclarator (TREE_VALUE (decl),
10221 TREE_PURPOSE (decl),
10222 PARM, init != NULL_TREE,
10226 type = TREE_TYPE (decl);
10227 if (TREE_CODE (type) == VOID_TYPE)
10228 decl = void_type_node;
10229 else if (TREE_CODE (type) == METHOD_TYPE)
10231 if (DECL_NAME (decl))
10232 /* Cannot use the decl here because
10233 we don't have DECL_CONTEXT set up yet. */
10234 cp_error ("parameter `%D' invalidly declared method type",
10237 error ("parameter invalidly declared method type");
10238 type = build_pointer_type (type);
10239 TREE_TYPE (decl) = type;
10241 else if (TREE_CODE (type) == OFFSET_TYPE)
10243 if (DECL_NAME (decl))
10244 cp_error ("parameter `%D' invalidly declared offset type",
10247 error ("parameter invalidly declared offset type");
10248 type = build_pointer_type (type);
10249 TREE_TYPE (decl) = type;
10251 else if (TREE_CODE (type) == RECORD_TYPE
10252 && TYPE_LANG_SPECIFIC (type)
10253 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
10255 abstract_virtuals_error (decl, type);
10256 any_error = 1; /* seems like a good idea */
10258 else if (TREE_CODE (type) == RECORD_TYPE
10259 && TYPE_LANG_SPECIFIC (type)
10260 && IS_SIGNATURE (type))
10262 signature_error (decl, type);
10263 any_error = 1; /* seems like a good idea */
10267 if (TREE_CODE (decl) == VOID_TYPE)
10269 if (result == NULL_TREE)
10271 result = void_list_node;
10272 last_result = result;
10276 TREE_CHAIN (last_result) = void_list_node;
10277 last_result = void_list_node;
10280 && (chain != void_list_node || TREE_CHAIN (chain)))
10281 error ("`void' in parameter list must be entire list");
10285 /* Since there is a prototype, args are passed in their own types. */
10286 DECL_ARG_TYPE (decl) = TREE_TYPE (decl);
10287 #ifdef PROMOTE_PROTOTYPES
10288 if ((TREE_CODE (type) == INTEGER_TYPE
10289 || TREE_CODE (type) == ENUMERAL_TYPE)
10290 && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
10291 DECL_ARG_TYPE (decl) = integer_type_node;
10298 if (TREE_CODE (init) == SAVE_EXPR)
10299 PARM_DECL_EXPR (init) = 1;
10300 else if (processing_template_decl)
10302 /* Unparsed default arg from in-class decl. */
10303 else if (TREE_CODE (init) == DEFAULT_ARG)
10305 else if (TREE_CODE (init) == VAR_DECL
10306 || TREE_CODE (init) == PARM_DECL)
10308 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init)))
10310 /* ``Local variables may not be used in default
10311 argument expressions.'' dpANSI C++ 8.2.6 */
10312 /* If extern int i; within a function is not
10313 considered a local variable, then this code is
10315 cp_error ("local variable `%D' may not be used as a default argument", init);
10318 else if (TREE_READONLY_DECL_P (init))
10319 init = decl_constant_value (init);
10322 init = require_instantiated_type (type, init, integer_zero_node);
10323 if (! processing_template_decl
10324 && TREE_CODE (init) != DEFAULT_ARG
10325 && ! can_convert_arg (type, TREE_TYPE (init), init))
10326 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
10327 TREE_TYPE (init), decl);
10333 if (decls == NULL_TREE)
10340 TREE_CHAIN (last_decl) = decl;
10343 if (! current_function_decl && TREE_PERMANENT (list_node))
10345 TREE_PURPOSE (list_node) = init;
10346 TREE_VALUE (list_node) = type;
10347 TREE_CHAIN (list_node) = NULL_TREE;
10350 list_node = saveable_tree_cons (init, type, NULL_TREE);
10351 if (result == NULL_TREE)
10353 result = list_node;
10354 last_result = result;
10358 TREE_CHAIN (last_result) = list_node;
10359 last_result = list_node;
10363 TREE_CHAIN (last_result) = NULL_TREE;
10364 /* If there are no parameters, and the function does not end
10365 with `...', then last_decl will be NULL_TREE. */
10366 if (last_decl != NULL_TREE)
10367 TREE_CHAIN (last_decl) = NULL_TREE;
10371 last_function_parms = decls;
10373 /* In a fcn definition, arg types must be complete. */
10374 if (funcdef_flag > 0)
10375 require_complete_types_for_parms (last_function_parms);
10380 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
10381 FUNCTION_TYPE with the newly parsed version of its default argument, which
10382 was previously digested as text. See snarf_defarg et al in lex.c. */
10385 replace_defarg (arg, init)
10388 if (! processing_template_decl
10389 && ! can_convert_arg (TREE_VALUE (arg), TREE_TYPE (init), init))
10390 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
10391 TREE_TYPE (init), TREE_VALUE (arg));
10392 TREE_PURPOSE (arg) = init;
10399 tree t = FUNCTION_ARG_CHAIN (d);
10400 if (DECL_CONSTRUCTOR_P (d)
10401 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d)))
10402 t = TREE_CHAIN (t);
10403 if (t && TREE_CODE (TREE_VALUE (t)) == REFERENCE_TYPE
10404 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t)))
10405 == DECL_CLASS_CONTEXT (d))
10406 && (TREE_CHAIN (t) == NULL_TREE
10407 || TREE_CHAIN (t) == void_list_node
10408 || TREE_PURPOSE (TREE_CHAIN (t))))
10413 /* These memoizing functions keep track of special properties which
10414 a class may have. `grok_ctor_properties' notices whether a class
10415 has a constructor of the form X(X&), and also complains
10416 if the class has a constructor of the form X(X).
10417 `grok_op_properties' takes notice of the various forms of
10418 operator= which are defined, as well as what sorts of type conversion
10419 may apply. Both functions take a FUNCTION_DECL as an argument. */
10422 grok_ctor_properties (ctype, decl)
10425 tree parmtypes = FUNCTION_ARG_CHAIN (decl);
10426 tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node;
10428 /* When a type has virtual baseclasses, a magical first int argument is
10429 added to any ctor so we can tell if the class has been initialized
10430 yet. This could screw things up in this function, so we deliberately
10431 ignore the leading int if we're in that situation. */
10433 && TREE_VALUE (parmtypes) == integer_type_node
10434 && TYPE_USES_VIRTUAL_BASECLASSES (ctype))
10436 parmtypes = TREE_CHAIN (parmtypes);
10437 parmtype = TREE_VALUE (parmtypes);
10440 if (TREE_CODE (parmtype) == REFERENCE_TYPE
10441 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype
10442 && (TREE_CHAIN (parmtypes) == NULL_TREE
10443 || TREE_CHAIN (parmtypes) == void_list_node
10444 || TREE_PURPOSE (TREE_CHAIN (parmtypes))))
10446 TYPE_HAS_INIT_REF (ctype) = 1;
10447 if (TYPE_READONLY (TREE_TYPE (parmtype)))
10448 TYPE_HAS_CONST_INIT_REF (ctype) = 1;
10450 else if (TYPE_MAIN_VARIANT (parmtype) == ctype
10451 && TREE_CHAIN (parmtypes) != NULL_TREE
10452 && TREE_CHAIN (parmtypes) == void_list_node)
10454 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
10456 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype);
10459 else if (TREE_CODE (parmtype) == VOID_TYPE
10460 || TREE_PURPOSE (parmtypes) != NULL_TREE)
10461 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1;
10466 /* An operator with this name can be either unary or binary. */
10472 return (name == ansi_opname [(int) INDIRECT_REF]
10473 || name == ansi_opname [(int) ADDR_EXPR]
10474 || name == ansi_opname [(int) NEGATE_EXPR]
10475 || name == ansi_opname[(int) POSTINCREMENT_EXPR]
10476 || name == ansi_opname[(int) POSTDECREMENT_EXPR]
10477 || name == ansi_opname [(int) CONVERT_EXPR]);
10480 /* An operator with this name can only be unary. */
10486 return (name == ansi_opname [(int) TRUTH_NOT_EXPR]
10487 || name == ansi_opname [(int) BIT_NOT_EXPR]
10488 || name == ansi_opname [(int) COMPONENT_REF]
10489 || OPERATOR_TYPENAME_P (name));
10492 /* Do a little sanity-checking on how they declared their operator. */
10495 grok_op_properties (decl, virtualp, friendp)
10497 int virtualp, friendp;
10499 tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
10500 int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
10501 tree name = DECL_NAME (decl);
10503 if (current_class_type == NULL_TREE)
10508 if (name == ansi_opname[(int) MODIFY_EXPR])
10509 TYPE_HAS_ASSIGNMENT (current_class_type) = 1;
10510 else if (name == ansi_opname[(int) CALL_EXPR])
10511 TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1;
10512 else if (name == ansi_opname[(int) ARRAY_REF])
10513 TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1;
10514 else if (name == ansi_opname[(int) COMPONENT_REF]
10515 || name == ansi_opname[(int) MEMBER_REF])
10516 TYPE_OVERLOADS_ARROW (current_class_type) = 1;
10517 else if (name == ansi_opname[(int) NEW_EXPR])
10518 TYPE_GETS_NEW (current_class_type) |= 1;
10519 else if (name == ansi_opname[(int) DELETE_EXPR])
10520 TYPE_GETS_DELETE (current_class_type) |= 1;
10521 else if (name == ansi_opname[(int) VEC_NEW_EXPR])
10522 TYPE_GETS_NEW (current_class_type) |= 2;
10523 else if (name == ansi_opname[(int) VEC_DELETE_EXPR])
10524 TYPE_GETS_DELETE (current_class_type) |= 2;
10527 if (name == ansi_opname[(int) NEW_EXPR]
10528 || name == ansi_opname[(int) VEC_NEW_EXPR])
10530 /* When the compiler encounters the definition of A::operator new, it
10531 doesn't look at the class declaration to find out if it's static. */
10533 revert_static_member_fn (&decl, NULL, NULL);
10535 /* Take care of function decl if we had syntax errors. */
10536 if (argtypes == NULL_TREE)
10538 = build_function_type (ptr_type_node,
10539 hash_tree_chain (integer_type_node,
10542 TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
10544 else if (name == ansi_opname[(int) DELETE_EXPR]
10545 || name == ansi_opname[(int) VEC_DELETE_EXPR])
10548 revert_static_member_fn (&decl, NULL, NULL);
10550 if (argtypes == NULL_TREE)
10552 = build_function_type (void_type_node,
10553 hash_tree_chain (ptr_type_node,
10557 TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
10559 if (! friendp && name == ansi_opname[(int) VEC_DELETE_EXPR]
10560 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)))
10561 != void_list_node))
10562 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type) = 1;
10567 /* An operator function must either be a non-static member function
10568 or have at least one parameter of a class, a reference to a class,
10569 an enumeration, or a reference to an enumeration. 13.4.0.6 */
10570 if (! methodp || DECL_STATIC_FUNCTION_P (decl))
10572 if (OPERATOR_TYPENAME_P (name)
10573 || name == ansi_opname[(int) CALL_EXPR]
10574 || name == ansi_opname[(int) MODIFY_EXPR]
10575 || name == ansi_opname[(int) COMPONENT_REF]
10576 || name == ansi_opname[(int) ARRAY_REF])
10577 cp_error ("`%D' must be a nonstatic member function", decl);
10582 if (DECL_STATIC_FUNCTION_P (decl))
10583 cp_error ("`%D' must be either a non-static member function or a non-member function", decl);
10586 for (; TREE_CODE (TREE_VALUE (p)) != VOID_TYPE ; p = TREE_CHAIN (p))
10588 tree arg = TREE_VALUE (p);
10589 if (TREE_CODE (arg) == REFERENCE_TYPE)
10590 arg = TREE_TYPE (arg);
10592 /* This lets bad template code slip through. */
10593 if (IS_AGGR_TYPE (arg)
10594 || TREE_CODE (arg) == ENUMERAL_TYPE
10595 || TREE_CODE (arg) == TEMPLATE_TYPE_PARM
10596 || TREE_CODE (arg) == TEMPLATE_TEMPLATE_PARM)
10600 ("`%D' must have an argument of class or enumerated type",
10607 if (name == ansi_opname[(int) CALL_EXPR])
10608 return; /* no restrictions on args */
10610 if (IDENTIFIER_TYPENAME_P (name) && ! DECL_TEMPLATE_INFO (decl))
10612 tree t = TREE_TYPE (name);
10613 if (TREE_CODE (t) == VOID_TYPE)
10614 pedwarn ("void is not a valid type conversion operator");
10615 else if (! friendp)
10617 int ref = (TREE_CODE (t) == REFERENCE_TYPE);
10620 t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
10622 if (t == current_class_type)
10623 what = "the same type";
10624 /* Don't force t to be complete here. */
10625 else if (IS_AGGR_TYPE (t)
10627 && DERIVED_FROM_P (t, current_class_type))
10628 what = "a base class";
10631 warning ("conversion to %s%s will never use a type conversion operator",
10632 ref ? "a reference to " : "", what);
10636 if (name == ansi_opname[(int) MODIFY_EXPR])
10640 if (list_length (argtypes) != 3 && methodp)
10642 cp_error ("`%D' must take exactly one argument", decl);
10645 parmtype = TREE_VALUE (TREE_CHAIN (argtypes));
10647 if (copy_assignment_arg_p (parmtype, virtualp)
10650 TYPE_HAS_ASSIGN_REF (current_class_type) = 1;
10651 if (TREE_CODE (parmtype) != REFERENCE_TYPE
10652 || TYPE_READONLY (TREE_TYPE (parmtype)))
10653 TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1;
10656 else if (name == ansi_opname[(int) COND_EXPR])
10659 pedwarn ("ANSI C++ prohibits overloading operator ?:");
10660 if (list_length (argtypes) != 4)
10661 cp_error ("`%D' must take exactly three arguments", decl);
10663 else if (ambi_op_p (name))
10665 if (list_length (argtypes) == 2)
10667 else if (list_length (argtypes) == 3)
10669 if ((name == ansi_opname[(int) POSTINCREMENT_EXPR]
10670 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
10671 && ! processing_template_decl
10672 && TREE_VALUE (TREE_CHAIN (argtypes)) != integer_type_node)
10675 cp_error ("postfix `%D' must take `int' as its argument",
10679 ("postfix `%D' must take `int' as its second argument",
10686 cp_error ("`%D' must take either zero or one argument", decl);
10688 cp_error ("`%D' must take either one or two arguments", decl);
10691 /* More Effective C++ rule 6. */
10693 && (name == ansi_opname[(int) POSTINCREMENT_EXPR]
10694 || name == ansi_opname[(int) POSTDECREMENT_EXPR]))
10696 tree arg = TREE_VALUE (argtypes);
10697 tree ret = TREE_TYPE (TREE_TYPE (decl));
10698 if (methodp || TREE_CODE (arg) == REFERENCE_TYPE)
10699 arg = TREE_TYPE (arg);
10700 arg = TYPE_MAIN_VARIANT (arg);
10701 if (list_length (argtypes) == 2)
10703 if (TREE_CODE (ret) != REFERENCE_TYPE
10704 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret)),
10706 cp_warning ("prefix `%D' should return `%T'", decl,
10707 build_reference_type (arg));
10711 if (!comptypes (TYPE_MAIN_VARIANT (ret), arg, 1))
10712 cp_warning ("postfix `%D' should return `%T'", decl, arg);
10716 else if (unary_op_p (name))
10718 if (list_length (argtypes) != 2)
10721 cp_error ("`%D' must take `void'", decl);
10723 cp_error ("`%D' must take exactly one argument", decl);
10726 else /* if (binary_op_p (name)) */
10728 if (list_length (argtypes) != 3)
10731 cp_error ("`%D' must take exactly one argument", decl);
10733 cp_error ("`%D' must take exactly two arguments", decl);
10736 /* More Effective C++ rule 7. */
10738 && (name == ansi_opname [TRUTH_ANDIF_EXPR]
10739 || name == ansi_opname [TRUTH_ORIF_EXPR]
10740 || name == ansi_opname [COMPOUND_EXPR]))
10741 cp_warning ("user-defined `%D' always evaluates both arguments",
10745 /* Effective C++ rule 23. */
10747 && list_length (argtypes) == 3
10748 && (name == ansi_opname [PLUS_EXPR]
10749 || name == ansi_opname [MINUS_EXPR]
10750 || name == ansi_opname [TRUNC_DIV_EXPR]
10751 || name == ansi_opname [MULT_EXPR])
10752 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == REFERENCE_TYPE)
10753 cp_warning ("`%D' should return by value", decl);
10757 for (; argtypes != void_list_node ; argtypes = TREE_CHAIN (argtypes))
10758 if (TREE_PURPOSE (argtypes))
10760 TREE_PURPOSE (argtypes) = NULL_TREE;
10761 if (name == ansi_opname[(int) POSTINCREMENT_EXPR]
10762 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
10765 cp_pedwarn ("`%D' cannot have default arguments", decl);
10768 cp_error ("`%D' cannot have default arguments", decl);
10773 /* Get the struct, enum or union (CODE says which) with tag NAME.
10774 Define the tag as a forward-reference if it is not defined.
10776 C++: If a class derivation is given, process it here, and report
10777 an error if multiple derivation declarations are not identical.
10779 If this is a definition, come in through xref_tag and only look in
10780 the current frame for the name (since C++ allows new names in any
10784 xref_tag (code_type_node, name, binfo, globalize)
10785 tree code_type_node;
10789 enum tag_types tag_code;
10790 enum tree_code code;
10792 register tree ref, t;
10793 struct binding_level *b = inner_binding_level;
10796 tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
10801 case signature_type:
10802 code = RECORD_TYPE;
10808 code = ENUMERAL_TYPE;
10811 my_friendly_abort (18);
10814 /* If a cross reference is requested, look up the type
10815 already defined for this tag and return it. */
10816 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
10819 name = TYPE_IDENTIFIER (t);
10823 t = IDENTIFIER_TYPE_VALUE (name);
10824 if (t && TREE_CODE (t) != code && TREE_CODE (t) != TEMPLATE_TYPE_PARM
10825 && TREE_CODE (t) != TEMPLATE_TEMPLATE_PARM)
10830 if (pedantic && t && (TREE_CODE (t) == TEMPLATE_TYPE_PARM
10831 || TREE_CODE (t) == TEMPLATE_TEMPLATE_PARM))
10833 cp_pedwarn ("redeclaration of template type-parameter `%T'", name);
10834 cp_pedwarn_at (" previously declared here", t);
10836 if (t && TYPE_CONTEXT (t) && got_type)
10840 /* If we know we are defining this tag, only look it up in
10841 this scope and don't try to find it as a type. */
10842 ref = lookup_tag (code, name, b, 1);
10850 ref = lookup_tag (code, name, b, 0);
10854 /* Try finding it as a type declaration. If that wins, use it. */
10855 ref = lookup_name (name, 1);
10857 if (ref != NULL_TREE
10858 && processing_template_decl
10859 && DECL_CLASS_TEMPLATE_P (ref)
10860 && template_class_depth (current_class_type) == 0)
10861 /* Since GLOBALIZE is true, we're declaring a global
10862 template, so we want this type. */
10863 ref = DECL_RESULT (ref);
10865 if (ref && TREE_CODE (ref) == TYPE_DECL
10866 && TREE_CODE (TREE_TYPE (ref)) == code)
10867 ref = TREE_TYPE (ref);
10873 push_obstacks_nochange ();
10877 /* If no such tag is yet defined, create a forward-reference node
10878 and record it as the "definition".
10879 When a real declaration of this type is found,
10880 the forward-reference will be altered into a real type. */
10882 /* In C++, since these migrate into the global scope, we must
10883 build them on the permanent obstack. */
10885 temp = allocation_temporary_p ();
10887 end_temporary_allocation ();
10889 if (code == ENUMERAL_TYPE)
10891 cp_error ("use of enum `%#D' without previous declaration", name);
10893 ref = make_node (ENUMERAL_TYPE);
10895 /* Give the type a default layout like unsigned int
10896 to avoid crashing if it does not get defined. */
10897 TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node);
10898 TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node);
10899 TREE_UNSIGNED (ref) = 1;
10900 TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node);
10901 TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node);
10902 TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node);
10904 /* Enable us to recognize when a type is created in class context.
10905 To do nested classes correctly, this should probably be cleared
10906 out when we leave this classes scope. Currently this in only
10907 done in `start_enum'. */
10909 pushtag (name, ref, globalize);
10913 struct binding_level *old_b = class_binding_level;
10915 ref = make_lang_type (code);
10917 if (tag_code == signature_type)
10919 SET_SIGNATURE (ref);
10920 /* Since a signature type will be turned into the type
10921 of signature tables, it's not only an interface. */
10922 CLASSTYPE_INTERFACE_ONLY (ref) = 0;
10923 SET_CLASSTYPE_INTERFACE_KNOWN (ref);
10924 /* A signature doesn't have a vtable. */
10925 CLASSTYPE_VTABLE_NEEDS_WRITING (ref) = 0;
10928 #ifdef NONNESTED_CLASSES
10929 /* Class types don't nest the way enums do. */
10930 class_binding_level = (struct binding_level *)0;
10932 pushtag (name, ref, globalize);
10933 class_binding_level = old_b;
10938 /* If it no longer looks like a nested type, make sure it's
10940 If it is not an IDENTIFIER, this is not a declaration */
10941 if (b == global_binding_level && !class_binding_level
10942 && TREE_CODE (name) == IDENTIFIER_NODE)
10945 binding = binding_for_name (name, current_namespace);
10946 if (BINDING_VALUE (binding) == NULL_TREE)
10947 BINDING_VALUE (binding) = TYPE_NAME (ref);
10950 if (!globalize && processing_template_decl && IS_AGGR_TYPE (ref))
10951 redeclare_class_template (ref, current_template_parms);
10955 xref_basetypes (code_type_node, name, ref, binfo);
10957 /* Until the type is defined, tentatively accept whatever
10958 structure tag the user hands us. */
10959 if (TYPE_SIZE (ref) == NULL_TREE
10960 && ref != current_class_type
10961 /* Have to check this, in case we have contradictory tag info. */
10962 && IS_AGGR_TYPE_CODE (TREE_CODE (ref)))
10964 if (tag_code == class_type)
10965 CLASSTYPE_DECLARED_CLASS (ref) = 1;
10966 else if (tag_code == record_type || tag_code == signature_type)
10967 CLASSTYPE_DECLARED_CLASS (ref) = 0;
10976 xref_tag_from_type (old, id, globalize)
10980 tree code_type_node;
10982 if (TREE_CODE (old) == RECORD_TYPE)
10983 code_type_node = (CLASSTYPE_DECLARED_CLASS (old)
10984 ? class_type_node : record_type_node);
10986 code_type_node = union_type_node;
10988 if (id == NULL_TREE)
10989 id = TYPE_IDENTIFIER (old);
10991 return xref_tag (code_type_node, id, NULL_TREE, globalize);
10995 xref_basetypes (code_type_node, name, ref, binfo)
10996 tree code_type_node;
11000 /* In the declaration `A : X, Y, ... Z' we mark all the types
11001 (A, X, Y, ..., Z) so we can check for duplicates. */
11004 enum tag_types tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
11006 if (tag_code == union_type)
11008 cp_error ("derived union `%T' invalid", ref);
11012 len = list_length (binfo);
11013 push_obstacks (TYPE_OBSTACK (ref), TYPE_OBSTACK (ref));
11015 SET_CLASSTYPE_MARKED (ref);
11016 BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len);
11018 for (i = 0; binfo; binfo = TREE_CHAIN (binfo))
11020 /* The base of a derived struct is public by default. */
11022 = (TREE_PURPOSE (binfo) == access_public_node
11023 || TREE_PURPOSE (binfo) == access_public_virtual_node
11024 || (tag_code != class_type
11025 && (TREE_PURPOSE (binfo) == access_default_node
11026 || TREE_PURPOSE (binfo) == access_default_virtual_node)));
11028 = (TREE_PURPOSE (binfo) == access_protected_node
11029 || TREE_PURPOSE (binfo) == access_protected_virtual_node);
11031 = (TREE_PURPOSE (binfo) == access_private_virtual_node
11032 || TREE_PURPOSE (binfo) == access_protected_virtual_node
11033 || TREE_PURPOSE (binfo) == access_public_virtual_node
11034 || TREE_PURPOSE (binfo) == access_default_virtual_node);
11035 tree basetype = TREE_VALUE (binfo);
11038 GNU_xref_hier (IDENTIFIER_POINTER (name),
11039 IDENTIFIER_POINTER (TREE_VALUE (binfo)),
11040 via_public, via_virtual, 0);
11042 if (basetype && TREE_CODE (basetype) == TYPE_DECL)
11043 basetype = TREE_TYPE (basetype);
11045 || (TREE_CODE (basetype) != RECORD_TYPE
11046 && TREE_CODE (basetype) != TYPENAME_TYPE
11047 && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM
11048 && TREE_CODE (basetype) != TEMPLATE_TEMPLATE_PARM))
11050 cp_error ("base type `%T' fails to be a struct or class type",
11051 TREE_VALUE (binfo));
11055 /* This code replaces similar code in layout_basetypes.
11056 We put the complete_type first for implicit `typename'. */
11057 else if (TYPE_SIZE (complete_type (basetype)) == NULL_TREE
11058 && ! (current_template_parms && uses_template_parms (basetype)))
11060 cp_error ("base class `%T' has incomplete type", basetype);
11066 if (CLASSTYPE_MARKED (basetype))
11068 if (basetype == ref)
11069 cp_error ("recursive type `%T' undefined", basetype);
11071 cp_error ("duplicate base type `%T' invalid", basetype);
11075 /* Note that the BINFO records which describe individual
11076 inheritances are *not* shared in the lattice! They
11077 cannot be shared because a given baseclass may be
11078 inherited with different `accessibility' by different
11079 derived classes. (Each BINFO record describing an
11080 individual inheritance contains flags which say what
11081 the `accessibility' of that particular inheritance is.) */
11083 base_binfo = make_binfo (integer_zero_node, basetype,
11084 TYPE_BINFO_VTABLE (basetype),
11085 TYPE_BINFO_VIRTUALS (basetype), NULL_TREE);
11087 TREE_VEC_ELT (binfos, i) = base_binfo;
11088 TREE_VIA_PUBLIC (base_binfo) = via_public;
11089 TREE_VIA_PROTECTED (base_binfo) = via_protected;
11090 TREE_VIA_VIRTUAL (base_binfo) = via_virtual;
11091 BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref);
11093 SET_CLASSTYPE_MARKED (basetype);
11095 /* We are free to modify these bits because they are meaningless
11096 at top level, and BASETYPE is a top-level type. */
11097 if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype))
11099 TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1;
11100 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
11103 TYPE_GETS_NEW (ref) |= TYPE_GETS_NEW (basetype);
11104 TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
11105 CLASSTYPE_LOCAL_TYPEDECLS (ref) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype);
11110 TREE_VEC_LENGTH (binfos) = i;
11112 BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE;
11115 TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1;
11117 TYPE_USES_MULTIPLE_INHERITANCE (ref)
11118 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos, 0)));
11119 if (TYPE_USES_MULTIPLE_INHERITANCE (ref))
11120 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
11122 /* Unmark all the types. */
11124 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i)));
11125 CLEAR_CLASSTYPE_MARKED (ref);
11131 tree current_local_enum = NULL_TREE;
11133 /* Begin compiling the definition of an enumeration type.
11134 NAME is its name (or null if anonymous).
11135 Returns the type object, as yet incomplete.
11136 Also records info about it so that build_enumerator
11137 may be used to declare the individual values as they are read. */
11143 register tree enumtype = NULL_TREE;
11144 struct binding_level *b = inner_binding_level;
11146 if (processing_template_decl && current_function_decl)
11147 end_temporary_allocation ();
11149 /* If this is the real definition for a previous forward reference,
11150 fill in the contents in the same object that used to be the
11151 forward reference. */
11153 if (name != NULL_TREE)
11154 enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1);
11156 if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE)
11157 cp_error ("multiple definition of `%#T'", enumtype);
11160 enumtype = make_node (ENUMERAL_TYPE);
11161 pushtag (name, enumtype, 0);
11164 if (b->pseudo_global)
11165 cp_error ("template declaration of `%#T'", enumtype);
11167 if (current_class_type)
11168 TREE_ADDRESSABLE (b->tags) = 1;
11170 current_local_enum = NULL_TREE;
11172 /* We don't copy this value because build_enumerator needs to do it. */
11173 enum_next_value = integer_zero_node;
11176 GNU_xref_decl (current_function_decl, enumtype);
11180 /* After processing and defining all the values of an enumeration type,
11181 install their decls in the enumeration type and finish it off.
11182 ENUMTYPE is the type object and VALUES a list of name-value pairs.
11183 Returns ENUMTYPE. */
11186 finish_enum (enumtype, values)
11187 register tree enumtype, values;
11189 register tree minnode = NULL_TREE, maxnode = NULL_TREE;
11190 /* Calculate the maximum value of any enumerator in this type. */
11194 register tree pair;
11195 register tree value = DECL_INITIAL (TREE_VALUE (values));
11197 if (! processing_template_decl)
11199 /* Speed up the main loop by performing some precalculations */
11200 TREE_TYPE (TREE_VALUE (values)) = enumtype;
11201 TREE_TYPE (value) = enumtype;
11202 minnode = maxnode = value;
11204 TREE_VALUE (values) = value;
11206 for (pair = TREE_CHAIN (values); pair; pair = TREE_CHAIN (pair))
11208 value = DECL_INITIAL (TREE_VALUE (pair));
11209 if (! processing_template_decl)
11211 TREE_TYPE (TREE_VALUE (pair)) = enumtype;
11212 TREE_TYPE (value) = enumtype;
11213 if (tree_int_cst_lt (maxnode, value))
11215 else if (tree_int_cst_lt (value, minnode))
11218 TREE_VALUE (pair) = value;
11222 maxnode = minnode = integer_zero_node;
11224 TYPE_VALUES (enumtype) = nreverse (values);
11226 if (processing_template_decl)
11228 if (current_function_decl)
11230 add_tree (build_min (TAG_DEFN, enumtype));
11231 resume_temporary_allocation ();
11237 int unsignedp = tree_int_cst_sgn (minnode) >= 0;
11238 int lowprec = min_precision (minnode, unsignedp);
11239 int highprec = min_precision (maxnode, unsignedp);
11240 int precision = MAX (lowprec, highprec);
11242 TYPE_SIZE (enumtype) = NULL_TREE;
11244 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
11246 TYPE_PRECISION (enumtype) = precision;
11248 fixup_unsigned_type (enumtype);
11250 fixup_signed_type (enumtype);
11252 if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node)))
11253 /* Use the width of the narrowest normal C type which is wide enough. */
11254 TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size
11257 TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node);
11259 TYPE_SIZE (enumtype) = 0;
11260 layout_type (enumtype);
11266 /* Fix up all variant types of this enum type. */
11267 for (tem = TYPE_MAIN_VARIANT (enumtype); tem;
11268 tem = TYPE_NEXT_VARIANT (tem))
11270 TYPE_VALUES (tem) = TYPE_VALUES (enumtype);
11271 TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype);
11272 TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype);
11273 TYPE_SIZE (tem) = TYPE_SIZE (enumtype);
11274 TYPE_MODE (tem) = TYPE_MODE (enumtype);
11275 TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype);
11276 TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype);
11277 TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype);
11281 /* Finish debugging output for this type. */
11282 rest_of_type_compilation (enumtype, global_bindings_p ());
11287 /* Build and install a CONST_DECL for one value of the
11288 current enumeration type (one that was begun with start_enum).
11289 Return a tree-list containing the name and its value.
11290 Assignment of sequential values by default is handled here. */
11293 build_enumerator (name, value)
11298 /* Remove no-op casts from the value. */
11300 STRIP_TYPE_NOPS (value);
11302 if (! processing_template_decl)
11304 /* Validate and default VALUE. */
11305 if (value != NULL_TREE)
11307 if (TREE_READONLY_DECL_P (value))
11308 value = decl_constant_value (value);
11310 if (TREE_CODE (value) == INTEGER_CST)
11312 value = default_conversion (value);
11313 constant_expression_warning (value);
11317 cp_error ("enumerator value for `%D' not integer constant", name);
11322 /* Default based on previous value. */
11323 if (value == NULL_TREE && ! processing_template_decl)
11325 value = enum_next_value;
11327 cp_error ("overflow in enumeration values at `%D'", name);
11330 /* Remove no-op casts from the value. */
11332 STRIP_TYPE_NOPS (value);
11334 /* We have to always copy here; not all INTEGER_CSTs are unshared,
11335 and there's no wedding ring. Look at size_int()...*/
11336 value = copy_node (value);
11338 /* To fix MAX_VAL enum consts. (bkoz) */
11339 TREE_TYPE (value) = integer_type_node;
11343 /* C++ associates enums with global, function, or class declarations. */
11345 decl = current_scope ();
11346 if (decl && decl == current_class_type)
11348 /* This enum declaration is local to the class, so we must put
11349 it in that class's list of decls. */
11350 decl = build_lang_field_decl (CONST_DECL, name, integer_type_node);
11351 DECL_INITIAL (decl) = value;
11352 TREE_READONLY (decl) = 1;
11353 pushdecl_class_level (decl);
11354 TREE_CHAIN (decl) = current_local_enum;
11355 current_local_enum = decl;
11359 /* It's a global enum, or it's local to a function. (Note local to
11360 a function could mean local to a class method. */
11361 decl = build_decl (CONST_DECL, name, integer_type_node);
11362 DECL_INITIAL (decl) = value;
11363 TREE_READONLY (decl) = 1;
11366 GNU_xref_decl (current_function_decl, decl);
11369 if (! processing_template_decl)
11371 /* Set basis for default for next value. */
11372 enum_next_value = build_binary_op_nodefault (PLUS_EXPR, value,
11373 integer_one_node, PLUS_EXPR);
11374 enum_overflow = tree_int_cst_lt (enum_next_value, value);
11377 result = saveable_tree_cons (name, decl, NULL_TREE);
11382 grok_enum_decls (decl)
11385 tree d = current_local_enum;
11387 if (d == NULL_TREE)
11392 if (TREE_CHAIN (d) == NULL_TREE)
11394 TREE_CHAIN (d) = decl;
11397 d = TREE_CHAIN (d);
11400 decl = current_local_enum;
11401 current_local_enum = NULL_TREE;
11406 static int function_depth;
11408 /* Create the FUNCTION_DECL for a function definition.
11409 DECLSPECS and DECLARATOR are the parts of the declaration;
11410 they describe the function's name and the type it returns,
11411 but twisted together in a fashion that parallels the syntax of C.
11413 This function creates a binding context for the function body
11414 as well as setting up the FUNCTION_DECL in current_function_decl.
11416 Returns 1 on success. If the DECLARATOR is not suitable for a function
11417 (it defines a datum instead), we return 0, which tells
11418 yyparse to report a parse error.
11420 For C++, we must first check whether that datum makes any sense.
11421 For example, "class A local_a(1,2);" means that variable local_a
11422 is an aggregate of type A, which should have a constructor
11423 applied to it with the argument list [1, 2].
11425 @@ There is currently no way to retrieve the storage
11426 @@ allocated to FUNCTION (or all of its parms) if we return
11427 @@ something we had previously. */
11430 start_function (declspecs, declarator, attrs, pre_parsed_p)
11431 tree declspecs, declarator, attrs;
11435 tree ctype = NULL_TREE;
11438 extern int have_extern_spec;
11439 extern int used_extern_spec;
11440 int doing_friend = 0;
11442 /* Sanity check. */
11443 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node)) == VOID_TYPE, 160);
11444 my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161);
11446 /* Assume, until we see it does. */
11447 current_function_returns_value = 0;
11448 current_function_returns_null = 0;
11449 warn_about_return_type = 0;
11451 shadowed_labels = 0;
11452 current_function_assigns_this = 0;
11453 current_function_just_assigned_this = 0;
11454 current_function_parms_stored = 0;
11455 original_result_rtx = NULL_RTX;
11456 base_init_expr = NULL_TREE;
11457 current_base_init_list = NULL_TREE;
11458 current_member_init_list = NULL_TREE;
11459 ctor_label = dtor_label = NULL_TREE;
11460 static_labelno = 0;
11462 clear_temp_name ();
11464 /* This should only be done once on the top most decl. */
11465 if (have_extern_spec && !used_extern_spec)
11467 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), declspecs);
11468 used_extern_spec = 1;
11473 decl1 = declarator;
11475 if (! DECL_ARGUMENTS (decl1)
11476 && !DECL_STATIC_FUNCTION_P (decl1)
11477 && DECL_CONTEXT (decl1)
11478 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1))
11479 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1))))
11481 tree binding = binding_for_name (DECL_NAME (decl1),
11482 current_namespace);
11483 cp_error ("redeclaration of `%#D'", decl1);
11484 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)))
11485 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)));
11486 else if (BINDING_VALUE (binding))
11487 cp_error_at ("previous declaration here", BINDING_VALUE (binding));
11490 fntype = TREE_TYPE (decl1);
11491 if (TREE_CODE (fntype) == METHOD_TYPE)
11492 ctype = TYPE_METHOD_BASETYPE (fntype);
11494 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
11495 class is in the (lexical) scope of the class in which it is
11497 if (!ctype && DECL_FRIEND_P (decl1))
11499 ctype = DECL_CLASS_CONTEXT (decl1);
11501 /* CTYPE could be null here if we're dealing with a template;
11502 for example, `inline friend float foo()' inside a template
11503 will have no CTYPE set. */
11504 if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
11510 /* In a fcn definition, arg types must be complete. */
11511 require_complete_types_for_parms (DECL_ARGUMENTS (decl1));
11513 /* In case some arg types were completed since the declaration was
11514 parsed, fix up the decls. */
11516 tree t = DECL_ARGUMENTS (decl1);
11517 for (; t; t = TREE_CHAIN (t))
11518 layout_decl (t, 0);
11521 last_function_parms = DECL_ARGUMENTS (decl1);
11522 last_function_parm_tags = NULL_TREE;
11526 decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL_TREE);
11527 /* If the declarator is not suitable for a function definition,
11528 cause a syntax error. */
11529 if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0;
11531 fntype = TREE_TYPE (decl1);
11533 restype = TREE_TYPE (fntype);
11534 if (IS_AGGR_TYPE (restype) && ! TYPE_PTRMEMFUNC_P (restype)
11535 && ! CLASSTYPE_GOT_SEMICOLON (restype))
11537 cp_error ("semicolon missing after declaration of `%#T'", restype);
11538 shadow_tag (build_expr_list (NULL_TREE, restype));
11539 CLASSTYPE_GOT_SEMICOLON (restype) = 1;
11540 if (TREE_CODE (fntype) == FUNCTION_TYPE)
11541 fntype = build_function_type (integer_type_node,
11542 TYPE_ARG_TYPES (fntype));
11544 fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)),
11546 TYPE_ARG_TYPES (fntype));
11547 TREE_TYPE (decl1) = fntype;
11550 if (TREE_CODE (fntype) == METHOD_TYPE)
11551 ctype = TYPE_METHOD_BASETYPE (fntype);
11552 else if (IDENTIFIER_LENGTH (DECL_NAME (decl1)) == 4
11553 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (decl1)), "main")
11554 && DECL_CONTEXT (decl1) == NULL_TREE)
11556 /* If this doesn't return integer_type, complain. */
11557 if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node)
11559 if (pedantic || warn_return_type)
11560 pedwarn ("return type for `main' changed to `int'");
11561 TREE_TYPE (decl1) = fntype = default_function_type;
11563 warn_about_return_type = 0;
11567 /* Warn if function was previously implicitly declared
11568 (but not if we warned then). */
11569 if (! warn_implicit
11570 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE)
11571 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)));
11573 current_function_decl = decl1;
11574 /* Save the parm names or decls from this function's declarator
11575 where store_parm_decls will find them. */
11576 current_function_parms = last_function_parms;
11577 current_function_parm_tags = last_function_parm_tags;
11579 announce_function (decl1);
11581 if (! processing_template_decl)
11583 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype))) == NULL_TREE)
11585 cp_error ("return-type `%#T' is an incomplete type",
11586 TREE_TYPE (fntype));
11588 /* Make it return void instead, but don't change the
11589 type of the DECL_RESULT, in case we have a named return value. */
11592 = build_cplus_method_type (build_type_variant (ctype,
11593 TREE_READONLY (decl1),
11594 TREE_SIDE_EFFECTS (decl1)),
11596 FUNCTION_ARG_CHAIN (decl1));
11599 = build_function_type (void_type_node,
11600 TYPE_ARG_TYPES (TREE_TYPE (decl1)));
11601 DECL_RESULT (decl1)
11602 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype)));
11603 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (TREE_TYPE (fntype));
11604 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (TREE_TYPE (fntype));
11607 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype))
11608 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype)))
11609 abstract_virtuals_error (decl1, TREE_TYPE (fntype));
11612 if (warn_about_return_type)
11613 pedwarn ("return-type defaults to `int'");
11615 /* Effective C++ rule 15. See also c_expand_return. */
11617 && DECL_NAME (decl1) == ansi_opname[(int) MODIFY_EXPR]
11618 && TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE)
11619 cp_warning ("`operator=' should return a reference to `*this'");
11621 /* Make the init_value nonzero so pushdecl knows this is not tentative.
11622 error_mark_node is replaced below (in poplevel) with the BLOCK. */
11623 DECL_INITIAL (decl1) = error_mark_node;
11625 /* This function exists in static storage.
11626 (This does not mean `static' in the C sense!) */
11627 TREE_STATIC (decl1) = 1;
11629 /* Record the decl so that the function name is defined.
11630 If we already have a decl for this name, and it is a FUNCTION_DECL,
11631 use the old decl. */
11633 if (processing_template_decl)
11634 decl1 = push_template_decl (decl1);
11635 else if (pre_parsed_p == 0)
11637 /* A specialization is not used to guide overload resolution. */
11638 if (flag_guiding_decls
11639 || !DECL_TEMPLATE_SPECIALIZATION (decl1))
11640 decl1 = pushdecl (decl1);
11641 DECL_MAIN_VARIANT (decl1) = decl1;
11642 fntype = TREE_TYPE (decl1);
11645 current_function_decl = decl1;
11647 if (DECL_INTERFACE_KNOWN (decl1))
11649 tree ctx = hack_decl_function_context (decl1);
11651 if (DECL_NOT_REALLY_EXTERN (decl1))
11652 DECL_EXTERNAL (decl1) = 0;
11654 if (ctx != NULL_TREE && DECL_THIS_INLINE (ctx)
11655 && TREE_PUBLIC (ctx))
11656 /* This is a function in a local class in an extern inline
11658 comdat_linkage (decl1);
11660 /* If this function belongs to an interface, it is public.
11661 If it belongs to someone else's interface, it is also external.
11662 It doesn't matter whether it's inline or not. */
11663 else if (interface_unknown == 0
11664 && (! DECL_TEMPLATE_INSTANTIATION (decl1)
11665 || flag_alt_external_templates))
11667 if (DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1)
11668 || processing_template_decl)
11669 DECL_EXTERNAL (decl1)
11671 || (DECL_THIS_INLINE (decl1) && ! flag_implement_inlines));
11673 DECL_EXTERNAL (decl1) = 0;
11674 DECL_NOT_REALLY_EXTERN (decl1) = 0;
11675 DECL_INTERFACE_KNOWN (decl1) = 1;
11679 /* This is a definition, not a reference.
11680 So clear DECL_EXTERNAL. */
11681 DECL_EXTERNAL (decl1) = 0;
11683 if ((DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1))
11684 && ! DECL_INTERFACE_KNOWN (decl1)
11685 /* Don't try to defer nested functions for now. */
11686 && ! hack_decl_function_context (decl1))
11687 DECL_DEFER_OUTPUT (decl1) = 1;
11689 DECL_INTERFACE_KNOWN (decl1) = 1;
11692 if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1))
11694 if (TREE_CODE (fntype) == METHOD_TYPE)
11695 TREE_TYPE (decl1) = fntype
11696 = build_function_type (TREE_TYPE (fntype),
11697 TREE_CHAIN (TYPE_ARG_TYPES (fntype)));
11698 current_function_parms = TREE_CHAIN (current_function_parms);
11699 DECL_ARGUMENTS (decl1) = current_function_parms;
11702 restype = TREE_TYPE (fntype);
11706 push_nested_class (ctype, 1);
11708 /* If we're compiling a friend function, neither of the variables
11709 current_class_ptr nor current_class_type will have values. */
11710 if (! doing_friend)
11712 /* We know that this was set up by `grokclassfn'.
11713 We do not wait until `store_parm_decls', since evil
11714 parse errors may never get us to that point. Here
11715 we keep the consistency between `current_class_type'
11716 and `current_class_ptr'. */
11717 tree t = current_function_parms;
11719 my_friendly_assert (t != NULL_TREE
11720 && TREE_CODE (t) == PARM_DECL, 162);
11722 if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE)
11724 int i = suspend_momentary ();
11726 /* Fool build_indirect_ref. */
11727 current_class_ptr = NULL_TREE;
11728 current_class_ref = build_indirect_ref (t, NULL_PTR);
11729 current_class_ptr = t;
11730 resume_momentary (i);
11733 /* We're having a signature pointer here. */
11734 current_class_ref = current_class_ptr = t;
11740 if (DECL_STATIC_FUNCTION_P (decl1))
11741 push_nested_class (DECL_CONTEXT (decl1), 2);
11743 push_memoized_context (0, 1);
11744 current_class_ptr = current_class_ref = NULL_TREE;
11748 current_binding_level->parm_flag = 1;
11750 GNU_xref_function (decl1, current_function_parms);
11753 cplus_decl_attributes (decl1, NULL_TREE, attrs);
11754 make_function_rtl (decl1);
11756 /* Promote the value to int before returning it. */
11757 if (C_PROMOTING_INTEGER_TYPE_P (restype))
11758 restype = type_promotes_to (restype);
11760 /* If this fcn was already referenced via a block-scope `extern' decl
11761 (or an implicit decl), propagate certain information about the usage. */
11762 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1)))
11763 TREE_ADDRESSABLE (decl1) = 1;
11765 if (DECL_RESULT (decl1) == NULL_TREE)
11767 DECL_RESULT (decl1)
11768 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype));
11769 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (restype);
11770 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (restype);
11773 /* Allocate further tree nodes temporarily during compilation
11774 of this function only. Tiemann moved up here from bottom of fn. */
11775 /* If this is a nested function, then we must continue to allocate RTL
11776 on the permanent obstack in case we need to inline it later. */
11777 if (! hack_decl_function_context (decl1))
11778 temporary_allocation ();
11780 if (processing_template_decl)
11782 ++minimal_parse_mode;
11783 last_tree = DECL_SAVED_TREE (decl1)
11784 = build_nt (EXPR_STMT, void_zero_node);
11789 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1))
11790 && DECL_LANGUAGE (decl1) == lang_cplusplus)
11792 dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11793 ctor_label = NULL_TREE;
11797 dtor_label = NULL_TREE;
11798 if (DECL_CONSTRUCTOR_P (decl1))
11799 ctor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11805 /* Called after store_parm_decls for a function-try-block. We need to update
11806 last_parm_cleanup_insn so that the base initializers for a constructor
11807 are run within this block, not before it. */
11810 expand_start_early_try_stmts ()
11812 expand_start_try_stmts ();
11813 last_parm_cleanup_insn = get_last_insn ();
11816 /* Store the parameter declarations into the current function declaration.
11817 This is called after parsing the parameter declarations, before
11818 digesting the body of the function.
11820 Also install to binding contour return value identifier, if any. */
11823 store_parm_decls ()
11825 register tree fndecl = current_function_decl;
11826 register tree parm;
11827 int parms_have_cleanups = 0;
11828 tree cleanups = NULL_TREE;
11830 /* This is either a chain of PARM_DECLs (when a prototype is used). */
11831 tree specparms = current_function_parms;
11833 /* This is a list of types declared among parms in a prototype. */
11834 tree parmtags = current_function_parm_tags;
11836 /* This is a chain of any other decls that came in among the parm
11837 declarations. If a parm is declared with enum {foo, bar} x;
11838 then CONST_DECLs for foo and bar are put here. */
11839 tree nonparms = NULL_TREE;
11841 if (toplevel_bindings_p ())
11842 fatal ("parse errors have confused me too much");
11844 /* Initialize RTL machinery. */
11845 init_function_start (fndecl, input_filename, lineno);
11847 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
11848 declare_function_name ();
11850 /* Create a binding level for the parms. */
11851 expand_start_bindings (0);
11853 if (specparms != NULL_TREE)
11855 /* This case is when the function was defined with an ANSI prototype.
11856 The parms already have decls, so we need not do anything here
11857 except record them as in effect
11858 and complain if any redundant old-style parm decls were written. */
11860 register tree next;
11862 /* Must clear this because it might contain TYPE_DECLs declared
11864 storedecls (NULL_TREE);
11866 for (parm = nreverse (specparms); parm; parm = next)
11868 next = TREE_CHAIN (parm);
11869 if (TREE_CODE (parm) == PARM_DECL)
11872 if (DECL_NAME (parm) == NULL_TREE)
11876 else if (TREE_CODE (TREE_TYPE (parm)) == VOID_TYPE)
11877 cp_error ("parameter `%D' declared void", parm);
11880 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
11881 A parameter is assumed not to have any side effects.
11882 If this should change for any reason, then this
11883 will have to wrap the bashed reference type in a save_expr.
11885 Also, if the parameter type is declared to be an X
11886 and there is an X(X&) constructor, we cannot lay it
11887 into the stack (any more), so we make this parameter
11888 look like it is really of reference type. Functions
11889 which pass parameters to this function will know to
11890 create a temporary in their frame, and pass a reference
11893 if (TREE_CODE (TREE_TYPE (parm)) == REFERENCE_TYPE
11894 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm))))
11895 SET_DECL_REFERENCE_SLOT (parm, convert_from_reference (parm));
11899 if (! processing_template_decl
11900 && (cleanup = maybe_build_cleanup (parm), cleanup))
11902 expand_decl (parm);
11903 parms_have_cleanups = 1;
11905 /* Keep track of the cleanups. */
11906 cleanups = tree_cons (parm, cleanup, cleanups);
11911 /* If we find an enum constant or a type tag,
11912 put it aside for the moment. */
11913 TREE_CHAIN (parm) = NULL_TREE;
11914 nonparms = chainon (nonparms, parm);
11918 /* Get the decls in their original chain order
11919 and record in the function. This is all and only the
11920 PARM_DECLs that were pushed into scope by the loop above. */
11921 DECL_ARGUMENTS (fndecl) = getdecls ();
11923 storetags (chainon (parmtags, gettags ()));
11926 DECL_ARGUMENTS (fndecl) = NULL_TREE;
11928 /* Now store the final chain of decls for the arguments
11929 as the decl-chain of the current lexical scope.
11930 Put the enumerators in as well, at the front so that
11931 DECL_ARGUMENTS is not modified. */
11933 storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl)));
11935 /* Initialize the RTL code for the function. */
11936 DECL_SAVED_INSNS (fndecl) = NULL_RTX;
11937 if (! processing_template_decl)
11938 expand_function_start (fndecl, parms_have_cleanups);
11940 current_function_parms_stored = 1;
11942 /* If this function is `main', emit a call to `__main'
11943 to run global initializers, etc. */
11944 if (DECL_NAME (fndecl)
11945 && IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4
11946 && strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main") == 0
11947 && DECL_CONTEXT (fndecl) == NULL_TREE)
11949 expand_main_function ();
11952 /* Now that we have initialized the parms, we can start their
11953 cleanups. We cannot do this before, since expand_decl_cleanup
11954 should not be called before the parm can be used. */
11956 && ! processing_template_decl)
11958 for (cleanups = nreverse (cleanups); cleanups; cleanups = TREE_CHAIN (cleanups))
11960 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups), TREE_VALUE (cleanups)))
11961 cp_error ("parser lost in parsing declaration of `%D'",
11962 TREE_PURPOSE (cleanups));
11966 /* Create a binding contour which can be used to catch
11967 cleanup-generated temporaries. Also, if the return value needs or
11968 has initialization, deal with that now. */
11969 if (parms_have_cleanups)
11972 expand_start_bindings (0);
11975 if (! processing_template_decl && flag_exceptions)
11977 /* Do the starting of the exception specifications, if we have any. */
11978 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
11979 expand_start_eh_spec ();
11982 last_parm_cleanup_insn = get_last_insn ();
11983 last_dtor_insn = get_last_insn ();
11986 /* Bind a name and initialization to the return value of
11987 the current function. */
11990 store_return_init (return_id, init)
11991 tree return_id, init;
11993 tree decl = DECL_RESULT (current_function_decl);
11996 /* Give this error as many times as there are occurrences,
11997 so that users can use Emacs compilation buffers to find
11998 and fix all such places. */
11999 pedwarn ("ANSI C++ does not permit named return values");
12001 if (return_id != NULL_TREE)
12003 if (DECL_NAME (decl) == NULL_TREE)
12005 DECL_NAME (decl) = return_id;
12006 DECL_ASSEMBLER_NAME (decl) = return_id;
12009 cp_error ("return identifier `%D' already in place", decl);
12012 /* Can't let this happen for constructors. */
12013 if (DECL_CONSTRUCTOR_P (current_function_decl))
12015 error ("can't redefine default return value for constructors");
12019 /* If we have a named return value, put that in our scope as well. */
12020 if (DECL_NAME (decl) != NULL_TREE)
12022 /* If this named return value comes in a register,
12023 put it in a pseudo-register. */
12024 if (DECL_REGISTER (decl))
12026 original_result_rtx = DECL_RTL (decl);
12027 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
12030 /* Let `cp_finish_decl' know that this initializer is ok. */
12031 DECL_INITIAL (decl) = init;
12034 if (minimal_parse_mode)
12035 add_tree (build_min_nt (RETURN_INIT, return_id,
12036 copy_to_permanent (init)));
12038 cp_finish_decl (decl, init, NULL_TREE, 0, 0);
12043 /* Finish up a function declaration and compile that function
12044 all the way to assembler language output. The free the storage
12045 for the function definition.
12047 This is called after parsing the body of the function definition.
12048 LINENO is the current line number.
12050 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
12051 (and expand_end_bindings) must be made to take care of the binding
12052 contour for the base initializers. This is only relevant for
12055 NESTED is nonzero if we were in the middle of compiling another function
12056 when we started on this one. */
12059 finish_function (lineno, call_poplevel, nested)
12064 register tree fndecl = current_function_decl;
12065 tree fntype, ctype = NULL_TREE;
12066 rtx last_parm_insn, insns;
12067 /* Label to use if this function is supposed to return a value. */
12068 tree no_return_label = NULL_TREE;
12069 tree decls = NULL_TREE;
12071 /* When we get some parse errors, we can end up without a
12072 current_function_decl, so cope. */
12073 if (fndecl == NULL_TREE)
12076 if (! nested && function_depth > 1)
12079 fntype = TREE_TYPE (fndecl);
12081 /* TREE_READONLY (fndecl) = 1;
12082 This caused &foo to be of type ptr-to-const-function
12083 which then got a warning when stored in a ptr-to-function variable. */
12085 /* This happens on strange parse errors. */
12086 if (! current_function_parms_stored)
12089 store_parm_decls ();
12092 if (processing_template_decl)
12094 if (DECL_CONSTRUCTOR_P (fndecl) && call_poplevel)
12096 decls = getdecls ();
12097 expand_end_bindings (decls, decls != NULL_TREE, 0);
12098 poplevel (decls != NULL_TREE, 0, 0);
12103 if (write_symbols != NO_DEBUG /*&& TREE_CODE (fntype) != METHOD_TYPE*/)
12105 tree ttype = target_type (fntype);
12108 if (IS_AGGR_TYPE (ttype))
12109 /* Let debugger know it should output info for this type. */
12110 note_debug_info_needed (ttype);
12112 for (parmdecl = DECL_ARGUMENTS (fndecl); parmdecl; parmdecl = TREE_CHAIN (parmdecl))
12114 ttype = target_type (TREE_TYPE (parmdecl));
12115 if (IS_AGGR_TYPE (ttype))
12116 /* Let debugger know it should output info for this type. */
12117 note_debug_info_needed (ttype);
12121 /* Clean house because we will need to reorder insns here. */
12122 do_pending_stack_adjust ();
12126 tree binfo = TYPE_BINFO (current_class_type);
12127 tree cond = integer_one_node;
12129 tree in_charge_node = lookup_name (in_charge_identifier, 0);
12131 int ok_to_optimize_dtor = 0;
12132 int empty_dtor = get_last_insn () == last_dtor_insn;
12134 if (current_function_assigns_this)
12135 cond = build (NE_EXPR, boolean_type_node,
12136 current_class_ptr, integer_zero_node);
12139 int n_baseclasses = CLASSTYPE_N_BASECLASSES (current_class_type);
12141 /* If this destructor is empty, then we don't need to check
12142 whether `this' is NULL in some cases. */
12143 if ((flag_this_is_variable & 1) == 0)
12144 ok_to_optimize_dtor = 1;
12145 else if (empty_dtor)
12146 ok_to_optimize_dtor
12147 = (n_baseclasses == 0
12148 || (n_baseclasses == 1
12149 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type, 0))));
12152 /* These initializations might go inline. Protect
12153 the binding level of the parms. */
12155 expand_start_bindings (0);
12157 if (current_function_assigns_this)
12159 current_function_assigns_this = 0;
12160 current_function_just_assigned_this = 0;
12163 /* Generate the code to call destructor on base class.
12164 If this destructor belongs to a class with virtual
12165 functions, then set the virtual function table
12166 pointer to represent the type of our base class. */
12168 /* This side-effect makes call to `build_delete' generate the
12169 code we have to have at the end of this destructor. */
12170 TYPE_HAS_DESTRUCTOR (current_class_type) = 0;
12172 /* These are two cases where we cannot delegate deletion. */
12173 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)
12174 || TYPE_GETS_REG_DELETE (current_class_type))
12175 exprstmt = build_delete (current_class_type, current_class_ref, integer_zero_node,
12176 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
12178 exprstmt = build_delete (current_class_type, current_class_ref, in_charge_node,
12179 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
12181 /* If we did not assign to this, then `this' is non-zero at
12182 the end of a destructor. As a special optimization, don't
12183 emit test if this is an empty destructor. If it does nothing,
12184 it does nothing. If it calls a base destructor, the base
12185 destructor will perform the test. */
12187 if (exprstmt != error_mark_node
12188 && (TREE_CODE (exprstmt) != NOP_EXPR
12189 || TREE_OPERAND (exprstmt, 0) != integer_zero_node
12190 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)))
12192 expand_label (dtor_label);
12193 if (cond != integer_one_node)
12194 expand_start_cond (cond, 0);
12195 if (exprstmt != void_zero_node)
12196 /* Don't call `expand_expr_stmt' if we're not going to do
12197 anything, since -Wall will give a diagnostic. */
12198 expand_expr_stmt (exprstmt);
12200 /* Run destructor on all virtual baseclasses. */
12201 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
12203 tree vbases = nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type)));
12204 expand_start_cond (build (BIT_AND_EXPR, integer_type_node,
12205 in_charge_node, integer_two_node), 0);
12208 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases)))
12210 tree vb = get_vbase
12211 (BINFO_TYPE (vbases),
12212 TYPE_BINFO (current_class_type));
12214 (build_scoped_method_call
12215 (current_class_ref, vb, dtor_identifier,
12216 build_expr_list (NULL_TREE, integer_zero_node)));
12218 vbases = TREE_CHAIN (vbases);
12220 expand_end_cond ();
12223 do_pending_stack_adjust ();
12224 if (cond != integer_one_node)
12225 expand_end_cond ();
12228 TYPE_HAS_DESTRUCTOR (current_class_type) = 1;
12230 virtual_size = c_sizeof (current_class_type);
12232 /* At the end, call delete if that's what's requested. */
12233 if (TYPE_GETS_REG_DELETE (current_class_type))
12234 /* This NOP_EXPR means we are in a static call context. */
12236 = build_method_call (build_indirect_ref (build1 (NOP_EXPR,
12237 build_pointer_type (current_class_type),
12240 ansi_opname[(int) DELETE_EXPR],
12241 expr_tree_cons (NULL_TREE, current_class_ptr,
12242 build_expr_list (NULL_TREE, virtual_size)),
12243 NULL_TREE, LOOKUP_NORMAL);
12244 else if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
12245 exprstmt = build_x_delete (ptr_type_node, current_class_ptr, 0,
12248 exprstmt = NULL_TREE;
12252 cond = build (BIT_AND_EXPR, integer_type_node,
12253 in_charge_node, integer_one_node);
12254 expand_start_cond (cond, 0);
12255 expand_expr_stmt (exprstmt);
12256 expand_end_cond ();
12259 /* End of destructor. */
12260 expand_end_bindings (NULL_TREE, getdecls () != NULL_TREE, 0);
12261 poplevel (2, 0, 0); /* XXX change to 1 */
12263 /* Back to the top of destructor. */
12264 /* Don't execute destructor code if `this' is NULL. */
12268 /* If the dtor is empty, and we know there is not possible way we
12269 could use any vtable entries, before they are possibly set by
12270 a base class dtor, we don't have to setup the vtables, as we
12271 know that any base class dtoring will set up any vtables it
12272 needs. We avoid MI, because one base class dtor can do a
12273 virtual dispatch to an overridden function that would need to
12274 have a non-related vtable set up, we cannot avoid setting up
12275 vtables in that case. We could change this to see if there is
12276 just one vtable. */
12277 if (! empty_dtor || TYPE_USES_COMPLEX_INHERITANCE (current_class_type))
12279 /* Make all virtual function table pointers in non-virtual base
12280 classes point to CURRENT_CLASS_TYPE's virtual function
12282 expand_direct_vtbls_init (binfo, binfo, 1, 0, current_class_ptr);
12284 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
12285 expand_indirect_vtbls_init (binfo, current_class_ref, current_class_ptr);
12288 if (! ok_to_optimize_dtor)
12290 cond = build_binary_op (NE_EXPR,
12291 current_class_ptr, integer_zero_node, 1);
12292 expand_start_cond (cond, 0);
12295 insns = get_insns ();
12298 last_parm_insn = get_first_nonparm_insn ();
12299 if (last_parm_insn == NULL_RTX)
12300 last_parm_insn = get_last_insn ();
12302 last_parm_insn = previous_insn (last_parm_insn);
12304 emit_insns_after (insns, last_parm_insn);
12306 if (! ok_to_optimize_dtor)
12307 expand_end_cond ();
12309 else if (current_function_assigns_this)
12311 /* Does not need to call emit_base_init, because
12312 that is done (if needed) just after assignment to this
12315 if (DECL_CONSTRUCTOR_P (current_function_decl))
12317 end_protect_partials ();
12318 expand_label (ctor_label);
12319 ctor_label = NULL_TREE;
12323 decls = getdecls ();
12324 expand_end_bindings (decls, decls != NULL_TREE, 0);
12325 poplevel (decls != NULL_TREE, 0, 0);
12327 c_expand_return (current_class_ptr);
12329 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl))) != VOID_TYPE
12330 && return_label != NULL_RTX)
12331 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
12333 current_function_assigns_this = 0;
12334 current_function_just_assigned_this = 0;
12335 base_init_expr = NULL_TREE;
12337 else if (DECL_CONSTRUCTOR_P (fndecl))
12339 tree cond = NULL_TREE, thenclause = NULL_TREE;
12340 /* Allow constructor for a type to get a new instance of the object
12341 using `build_new'. */
12342 tree abstract_virtuals = CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type);
12343 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = NULL_TREE;
12345 DECL_RETURNS_FIRST_ARG (fndecl) = 1;
12347 if (flag_this_is_variable > 0)
12349 cond = build_binary_op (EQ_EXPR,
12350 current_class_ptr, integer_zero_node, 1);
12351 thenclause = build_modify_expr (current_class_ptr, NOP_EXPR,
12352 build_new (NULL_TREE, current_class_type, void_type_node, 0));
12355 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = abstract_virtuals;
12359 if (flag_this_is_variable > 0)
12361 expand_start_cond (cond, 0);
12362 expand_expr_stmt (thenclause);
12363 expand_end_cond ();
12366 /* Emit insns from `emit_base_init' which sets up virtual
12367 function table pointer(s). */
12368 if (base_init_expr)
12370 expand_expr_stmt (base_init_expr);
12371 base_init_expr = NULL_TREE;
12374 insns = get_insns ();
12377 /* This is where the body of the constructor begins. */
12379 emit_insns_after (insns, last_parm_cleanup_insn);
12381 end_protect_partials ();
12383 /* This is where the body of the constructor ends. */
12384 expand_label (ctor_label);
12385 ctor_label = NULL_TREE;
12389 decls = getdecls ();
12390 expand_end_bindings (decls, decls != NULL_TREE, 0);
12391 poplevel (decls != NULL_TREE, 1, 0);
12394 c_expand_return (current_class_ptr);
12396 current_function_assigns_this = 0;
12397 current_function_just_assigned_this = 0;
12399 else if (IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4
12400 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main")
12401 && DECL_CONTEXT (fndecl) == NULL_TREE)
12403 /* Make it so that `main' always returns 0 by default. */
12405 c_expand_return (integer_one_node);
12407 c_expand_return (integer_zero_node);
12410 else if (return_label != NULL_RTX
12411 && current_function_return_value == NULL_TREE
12412 && ! DECL_NAME (DECL_RESULT (current_function_decl)))
12413 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
12415 if (flag_exceptions)
12416 expand_exception_blocks ();
12418 /* If this function is supposed to return a value, ensure that
12419 we do not fall into the cleanups by mistake. The end of our
12420 function will look like this:
12422 user code (may have return stmt somewhere)
12423 goto no_return_label
12428 NOTE_INSN_FUNCTION_END
12432 If the user omits a return stmt in the USER CODE section, we
12433 will have a control path which reaches NOTE_INSN_FUNCTION_END.
12434 Otherwise, we won't. */
12435 if (no_return_label)
12437 DECL_CONTEXT (no_return_label) = fndecl;
12438 DECL_INITIAL (no_return_label) = error_mark_node;
12439 DECL_SOURCE_FILE (no_return_label) = input_filename;
12440 DECL_SOURCE_LINE (no_return_label) = lineno;
12441 expand_goto (no_return_label);
12446 /* remove the binding contour which is used
12447 to catch cleanup-generated temporaries. */
12448 expand_end_bindings (0, 0, 0);
12449 poplevel (0, 0, 0);
12451 /* Emit label at beginning of cleanup code for parameters. */
12452 emit_label (cleanup_label);
12455 /* Get return value into register if that's where it's supposed to be. */
12456 if (original_result_rtx)
12457 fixup_result_decl (DECL_RESULT (fndecl), original_result_rtx);
12459 /* Finish building code that will trigger warnings if users forget
12460 to make their functions return values. */
12461 if (no_return_label || cleanup_label)
12462 emit_jump (return_label);
12463 if (no_return_label)
12465 /* We don't need to call `expand_*_return' here because we
12466 don't need any cleanups here--this path of code is only
12467 for error checking purposes. */
12468 expand_label (no_return_label);
12471 /* Generate rtl for function exit. */
12472 expand_function_end (input_filename, lineno, 1);
12475 /* This must come after expand_function_end because cleanups might
12476 have declarations (from inline functions) that need to go into
12477 this function's blocks. */
12478 if (current_binding_level->parm_flag != 1)
12479 my_friendly_abort (122);
12480 poplevel (1, 0, 1);
12482 /* reset scope for C++: if we were in the scope of a class,
12483 then when we finish this function, we are not longer so.
12484 This cannot be done until we know for sure that no more
12485 class members will ever be referenced in this function
12486 (i.e., calls to destructors). */
12487 if (current_class_name)
12489 ctype = current_class_type;
12490 pop_nested_class (1);
12493 pop_memoized_context (1);
12495 /* Must mark the RESULT_DECL as being in this function. */
12496 DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
12498 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
12499 to the FUNCTION_DECL node itself. */
12500 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
12502 if (! processing_template_decl)
12504 int saved_flag_keep_inline_functions =
12505 flag_keep_inline_functions;
12507 /* So we can tell if jump_optimize sets it to 1. */
12510 if (DECL_CONTEXT (fndecl) != NULL_TREE
12511 && hack_decl_function_context (fndecl))
12512 /* Trick rest_of_compilation into not deferring output of this
12513 function, even if it is inline, since the rtl_obstack for
12514 this function is the function_obstack of the enclosing
12515 function and will be deallocated when the enclosing
12516 function is gone. See save_tree_status. */
12517 flag_keep_inline_functions = 1;
12519 /* Run the optimizers and output the assembler code for this
12522 if (DECL_ARTIFICIAL (fndecl))
12524 /* Do we really *want* to inline this synthesized method? */
12526 int save_fif = flag_inline_functions;
12527 flag_inline_functions = 1;
12529 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
12530 will check our size. */
12531 DECL_INLINE (fndecl) = 0;
12533 rest_of_compilation (fndecl);
12534 flag_inline_functions = save_fif;
12537 rest_of_compilation (fndecl);
12539 flag_keep_inline_functions = saved_flag_keep_inline_functions;
12541 if (DECL_SAVED_INSNS (fndecl) && ! TREE_ASM_WRITTEN (fndecl))
12543 /* Set DECL_EXTERNAL so that assemble_external will be called as
12544 necessary. We'll clear it again in finish_file. */
12545 if (! DECL_EXTERNAL (fndecl))
12546 DECL_NOT_REALLY_EXTERN (fndecl) = 1;
12547 DECL_EXTERNAL (fndecl) = 1;
12548 mark_inline_for_output (fndecl);
12551 if (ctype && TREE_ASM_WRITTEN (fndecl))
12552 note_debug_info_needed (ctype);
12554 current_function_returns_null |= can_reach_end;
12556 /* Since we don't normally go through c_expand_return for constructors,
12557 this normally gets the wrong value.
12558 Also, named return values have their return codes emitted after
12559 NOTE_INSN_FUNCTION_END, confusing jump.c. */
12560 if (DECL_CONSTRUCTOR_P (fndecl)
12561 || DECL_NAME (DECL_RESULT (fndecl)) != NULL_TREE)
12562 current_function_returns_null = 0;
12564 if (TREE_THIS_VOLATILE (fndecl) && current_function_returns_null)
12565 cp_warning ("`noreturn' function `%D' does return", fndecl);
12566 else if ((warn_return_type || pedantic)
12567 && current_function_returns_null
12568 && TREE_CODE (TREE_TYPE (fntype)) != VOID_TYPE)
12570 /* If this function returns non-void and control can drop through,
12572 cp_warning ("control reaches end of non-void function `%D'", fndecl);
12574 /* With just -W, complain only if function returns both with
12575 and without a value. */
12576 else if (extra_warnings
12577 && current_function_returns_value && current_function_returns_null)
12578 warning ("this function may return with or without a value");
12583 /* Free all the tree nodes making up this function. */
12584 /* Switch back to allocating nodes permanently
12585 until we start another function. */
12586 if (processing_template_decl)
12588 --minimal_parse_mode;
12589 DECL_SAVED_TREE (fndecl) = TREE_CHAIN (DECL_SAVED_TREE (fndecl));
12593 permanent_allocation (1);
12595 if (DECL_SAVED_INSNS (fndecl) == NULL_RTX)
12599 /* Stop pointing to the local nodes about to be freed. */
12600 /* But DECL_INITIAL must remain nonzero so we know this
12601 was an actual function definition. */
12602 DECL_INITIAL (fndecl) = error_mark_node;
12603 for (t = DECL_ARGUMENTS (fndecl); t; t = TREE_CHAIN (t))
12604 DECL_RTL (t) = DECL_INCOMING_RTL (t) = NULL_RTX;
12607 if (DECL_STATIC_CONSTRUCTOR (fndecl))
12608 static_ctors = perm_tree_cons (NULL_TREE, fndecl, static_ctors);
12609 if (DECL_STATIC_DESTRUCTOR (fndecl))
12610 static_dtors = perm_tree_cons (NULL_TREE, fndecl, static_dtors);
12614 /* Let the error reporting routines know that we're outside a
12615 function. For a nested function, this value is used in
12616 pop_cp_function_context and then reset via pop_function_context. */
12617 current_function_decl = NULL_TREE;
12620 named_label_uses = NULL;
12621 current_class_ptr = NULL_TREE;
12622 current_class_ref = NULL_TREE;
12625 /* Create the FUNCTION_DECL for a function definition.
12626 LINE1 is the line number that the definition absolutely begins on.
12627 LINE2 is the line number that the name of the function appears on.
12628 DECLSPECS and DECLARATOR are the parts of the declaration;
12629 they describe the return type and the name of the function,
12630 but twisted together in a fashion that parallels the syntax of C.
12632 This function creates a binding context for the function body
12633 as well as setting up the FUNCTION_DECL in current_function_decl.
12635 Returns a FUNCTION_DECL on success.
12637 If the DECLARATOR is not suitable for a function (it defines a datum
12638 instead), we return 0, which tells yyparse to report a parse error.
12640 May return void_type_node indicating that this method is actually
12641 a friend. See grokfield for more details.
12643 Came here with a `.pushlevel' .
12645 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
12646 CHANGES TO CODE IN `grokfield'. */
12649 start_method (declspecs, declarator)
12650 tree declarator, declspecs;
12652 tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
12655 /* Something too ugly to handle. */
12656 if (fndecl == NULL_TREE)
12659 /* Pass friends other than inline friend functions back. */
12660 if (fndecl == void_type_node)
12663 if (TREE_CODE (fndecl) != FUNCTION_DECL)
12664 /* Not a function, tell parser to report parse error. */
12667 if (IS_SIGNATURE (current_class_type))
12668 IS_DEFAULT_IMPLEMENTATION (fndecl) = 1;
12670 if (DECL_IN_AGGR_P (fndecl))
12672 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type)
12674 if (DECL_CONTEXT (fndecl))
12675 cp_error ("`%D' is already defined in class %s", fndecl,
12676 TYPE_NAME_STRING (DECL_CONTEXT (fndecl)));
12678 return void_type_node;
12681 DECL_THIS_INLINE (fndecl) = 1;
12683 if (flag_default_inline)
12684 DECL_INLINE (fndecl) = 1;
12686 if (processing_template_decl)
12687 fndecl = push_template_decl (fndecl);
12689 /* We read in the parameters on the maybepermanent_obstack,
12690 but we won't be getting back to them until after we
12691 may have clobbered them. So the call to preserve_data
12692 will keep them safe. */
12695 if (! DECL_FRIEND_P (fndecl))
12697 if (DECL_CHAIN (fndecl) != NULL_TREE)
12699 /* Need a fresh node here so that we don't get circularity
12700 when we link these together. If FNDECL was a friend, then
12701 `pushdecl' does the right thing, which is nothing wrt its
12702 current value of DECL_CHAIN. */
12703 fndecl = copy_node (fndecl);
12705 if (TREE_CHAIN (fndecl))
12707 fndecl = copy_node (fndecl);
12708 TREE_CHAIN (fndecl) = NULL_TREE;
12711 if (DECL_CONSTRUCTOR_P (fndecl))
12713 if (! grok_ctor_properties (current_class_type, fndecl))
12714 return void_type_node;
12716 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl)))
12717 grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0);
12720 cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0, 0);
12722 /* Make a place for the parms */
12724 current_binding_level->parm_flag = 1;
12726 DECL_IN_AGGR_P (fndecl) = 1;
12730 /* Go through the motions of finishing a function definition.
12731 We don't compile this method until after the whole class has
12734 FINISH_METHOD must return something that looks as though it
12735 came from GROKFIELD (since we are defining a method, after all).
12737 This is called after parsing the body of the function definition.
12738 STMTS is the chain of statements that makes up the function body.
12740 DECL is the ..._DECL that `start_method' provided. */
12743 finish_method (decl)
12746 register tree fndecl = decl;
12749 register tree link;
12751 if (decl == void_type_node)
12754 old_initial = DECL_INITIAL (fndecl);
12756 /* Undo the level for the parms (from start_method).
12757 This is like poplevel, but it causes nothing to be
12758 saved. Saving information here confuses symbol-table
12759 output routines. Besides, this information will
12760 be correctly output when this method is actually
12763 /* Clear out the meanings of the local variables of this level;
12764 also record in each decl which block it belongs to. */
12766 for (link = current_binding_level->names; link; link = TREE_CHAIN (link))
12768 if (DECL_NAME (link) != NULL_TREE)
12769 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = 0;
12770 my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163);
12771 DECL_CONTEXT (link) = NULL_TREE;
12774 /* Restore all name-meanings of the outer levels
12775 that were shadowed by this level. */
12777 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
12778 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12779 for (link = current_binding_level->class_shadowed;
12780 link; link = TREE_CHAIN (link))
12781 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12782 for (link = current_binding_level->type_shadowed;
12783 link; link = TREE_CHAIN (link))
12784 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12786 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
12787 (HOST_WIDE_INT) current_binding_level->level_chain,
12788 current_binding_level->parm_flag,
12789 current_binding_level->keep);
12791 poplevel (0, 0, 0);
12793 DECL_INITIAL (fndecl) = old_initial;
12795 /* We used to check if the context of FNDECL was different from
12796 current_class_type as another way to get inside here. This didn't work
12797 for String.cc in libg++. */
12798 if (DECL_FRIEND_P (fndecl))
12800 CLASSTYPE_INLINE_FRIENDS (current_class_type)
12801 = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type));
12802 decl = void_type_node;
12808 /* Called when a new struct TYPE is defined.
12809 If this structure or union completes the type of any previous
12810 variable declaration, lay it out and output its rtl. */
12813 hack_incomplete_structures (type)
12818 if (current_binding_level->incomplete == NULL_TREE)
12821 if (!type) /* Don't do this for class templates. */
12824 for (list = ¤t_binding_level->incomplete; *list; )
12826 tree decl = TREE_VALUE (*list);
12827 if ((decl && TREE_TYPE (decl) == type)
12828 || (TREE_TYPE (decl)
12829 && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
12830 && TREE_TYPE (TREE_TYPE (decl)) == type))
12832 int toplevel = toplevel_bindings_p ();
12833 if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
12834 && TREE_TYPE (TREE_TYPE (decl)) == type)
12835 layout_type (TREE_TYPE (decl));
12836 layout_decl (decl, 0);
12837 rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0);
12841 expand_decl (decl);
12842 cleanup = maybe_build_cleanup (decl);
12843 expand_decl_init (decl);
12844 if (! expand_decl_cleanup (decl, cleanup))
12845 cp_error ("parser lost in parsing declaration of `%D'",
12848 *list = TREE_CHAIN (*list);
12851 list = &TREE_CHAIN (*list);
12855 /* If DECL is of a type which needs a cleanup, build that cleanup here.
12856 See build_delete for information about AUTO_DELETE.
12858 Don't build these on the momentary obstack; they must live
12859 the life of the binding contour. */
12862 maybe_build_cleanup_1 (decl, auto_delete)
12863 tree decl, auto_delete;
12865 tree type = TREE_TYPE (decl);
12866 if (TYPE_NEEDS_DESTRUCTOR (type))
12868 int temp = 0, flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
12871 if (TREE_CODE (decl) != PARM_DECL)
12872 temp = suspend_momentary ();
12874 if (TREE_CODE (type) == ARRAY_TYPE)
12878 mark_addressable (decl);
12879 rval = build_unary_op (ADDR_EXPR, decl, 0);
12882 /* Optimize for space over speed here. */
12883 if (! TYPE_USES_VIRTUAL_BASECLASSES (type)
12884 || flag_expensive_optimizations)
12885 flags |= LOOKUP_NONVIRTUAL;
12887 rval = build_delete (TREE_TYPE (rval), rval, auto_delete, flags, 0);
12889 if (TYPE_USES_VIRTUAL_BASECLASSES (type)
12890 && ! TYPE_HAS_DESTRUCTOR (type))
12891 rval = build_compound_expr (expr_tree_cons (NULL_TREE, rval,
12892 build_expr_list (NULL_TREE, build_vbase_delete (type, decl))));
12894 if (TREE_CODE (decl) != PARM_DECL)
12895 resume_momentary (temp);
12902 /* If DECL is of a type which needs a cleanup, build that cleanup
12903 here. The cleanup does free the storage with a call to delete. */
12906 maybe_build_cleanup_and_delete (decl)
12909 return maybe_build_cleanup_1 (decl, integer_three_node);
12912 /* If DECL is of a type which needs a cleanup, build that cleanup
12913 here. The cleanup does not free the storage with a call a delete. */
12916 maybe_build_cleanup (decl)
12919 return maybe_build_cleanup_1 (decl, integer_two_node);
12922 /* Expand a C++ expression at the statement level.
12923 This is needed to ferret out nodes which have UNKNOWN_TYPE.
12924 The C++ type checker should get all of these out when
12925 expressions are combined with other, type-providing, expressions,
12926 leaving only orphan expressions, such as:
12928 &class::bar; / / takes its address, but does nothing with it. */
12931 cplus_expand_expr_stmt (exp)
12934 if (processing_template_decl)
12936 add_tree (build_min_nt (EXPR_STMT, exp));
12940 /* Arrange for all temps to disappear. */
12941 expand_start_target_temps ();
12943 if (TREE_TYPE (exp) == unknown_type_node)
12945 if (TREE_CODE (exp) == ADDR_EXPR || TREE_CODE (exp) == TREE_LIST)
12946 error ("address of overloaded function with no contextual type information");
12947 else if (TREE_CODE (exp) == COMPONENT_REF)
12948 warning ("useless reference to a member function name, did you forget the ()?");
12952 if (TREE_CODE (exp) == FUNCTION_DECL)
12954 cp_warning ("reference, not call, to function `%D'", exp);
12955 warning ("at this point in file");
12959 /* We should do this eventually, but right now this causes regex.o from
12960 libg++ to miscompile, and tString to core dump. */
12961 exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp);
12964 /* Strip unused implicit INDIRECT_REFs of references. */
12965 if (TREE_CODE (exp) == INDIRECT_REF
12966 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp, 0))) == REFERENCE_TYPE)
12967 exp = TREE_OPERAND (exp, 0);
12969 /* If we don't do this, we end up down inside expand_expr
12970 trying to do TYPE_MODE on the ERROR_MARK, and really
12971 go outside the bounds of the type. */
12972 if (exp != error_mark_node)
12973 expand_expr_stmt (break_out_cleanups (exp));
12976 /* Clean up any pending cleanups. This happens when a function call
12977 returns a cleanup-needing value that nobody uses. */
12978 expand_end_target_temps ();
12981 /* When a stmt has been parsed, this function is called.
12983 Currently, this function only does something within a
12984 constructor's scope: if a stmt has just assigned to this,
12985 and we are in a derived class, we call `emit_base_init'. */
12990 extern struct nesting *cond_stack, *loop_stack, *case_stack;
12993 if (current_function_assigns_this
12994 || ! current_function_just_assigned_this)
12996 if (DECL_CONSTRUCTOR_P (current_function_decl))
12998 /* Constructors must wait until we are out of control
12999 zones before calling base constructors. */
13000 if (cond_stack || loop_stack || case_stack)
13002 expand_expr_stmt (base_init_expr);
13003 check_base_init (current_class_type);
13005 current_function_assigns_this = 1;
13008 /* Change a static member function definition into a FUNCTION_TYPE, instead
13009 of the METHOD_TYPE that we create when it's originally parsed.
13011 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
13012 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
13013 other decls. Either pass the addresses of local variables or NULL. */
13016 revert_static_member_fn (decl, fn, argtypes)
13017 tree *decl, *fn, *argtypes;
13020 tree function = fn ? *fn : TREE_TYPE (*decl);
13021 tree args = argtypes ? *argtypes : TYPE_ARG_TYPES (function);
13023 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args))))
13024 cp_error ("static member function `%#D' declared const", *decl);
13025 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args))))
13026 cp_error ("static member function `%#D' declared volatile", *decl);
13028 args = TREE_CHAIN (args);
13029 tmp = build_function_type (TREE_TYPE (function), args);
13030 tmp = build_type_variant (tmp, TYPE_READONLY (function),
13031 TYPE_VOLATILE (function));
13032 tmp = build_exception_variant (tmp,
13033 TYPE_RAISES_EXCEPTIONS (function));
13034 TREE_TYPE (*decl) = tmp;
13035 if (DECL_ARGUMENTS (*decl))
13036 DECL_ARGUMENTS (*decl) = TREE_CHAIN (DECL_ARGUMENTS (*decl));
13037 DECL_STATIC_FUNCTION_P (*decl) = 1;
13045 id_in_current_class (id)
13048 return !!purpose_member (id, class_binding_level->class_shadowed);
13055 int warn_about_return_type;
13057 int just_assigned_this;
13059 int temp_name_counter;
13061 tree shadowed_labels;
13064 rtx last_dtor_insn;
13065 rtx last_parm_cleanup_insn;
13066 tree base_init_list;
13067 tree member_init_list;
13068 tree base_init_expr;
13069 tree current_class_ptr;
13070 tree current_class_ref;
13072 struct cp_function *next;
13073 struct binding_level *binding_level;
13074 int static_labelno;
13077 static struct cp_function *cp_function_chain;
13079 extern int temp_name_counter;
13081 /* Save and reinitialize the variables
13082 used during compilation of a C++ function. */
13085 push_cp_function_context (context)
13088 struct cp_function *p
13089 = (struct cp_function *) xmalloc (sizeof (struct cp_function));
13091 push_function_context_to (context);
13093 p->next = cp_function_chain;
13094 cp_function_chain = p;
13096 p->named_labels = named_labels;
13097 p->shadowed_labels = shadowed_labels;
13098 p->returns_value = current_function_returns_value;
13099 p->returns_null = current_function_returns_null;
13100 p->warn_about_return_type = warn_about_return_type;
13101 p->binding_level = current_binding_level;
13102 p->ctor_label = ctor_label;
13103 p->dtor_label = dtor_label;
13104 p->last_dtor_insn = last_dtor_insn;
13105 p->last_parm_cleanup_insn = last_parm_cleanup_insn;
13106 p->assigns_this = current_function_assigns_this;
13107 p->just_assigned_this = current_function_just_assigned_this;
13108 p->parms_stored = current_function_parms_stored;
13109 p->result_rtx = original_result_rtx;
13110 p->base_init_expr = base_init_expr;
13111 p->temp_name_counter = temp_name_counter;
13112 p->base_init_list = current_base_init_list;
13113 p->member_init_list = current_member_init_list;
13114 p->current_class_ptr = current_class_ptr;
13115 p->current_class_ref = current_class_ref;
13116 p->static_labelno = static_labelno;
13119 /* Restore the variables used during compilation of a C++ function. */
13122 pop_cp_function_context (context)
13125 struct cp_function *p = cp_function_chain;
13128 /* Bring back all the labels that were shadowed. */
13129 for (link = shadowed_labels; link; link = TREE_CHAIN (link))
13130 if (DECL_NAME (TREE_VALUE (link)) != 0)
13131 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)),
13132 TREE_VALUE (link));
13134 pop_function_context_from (context);
13136 cp_function_chain = p->next;
13138 named_labels = p->named_labels;
13139 shadowed_labels = p->shadowed_labels;
13140 current_function_returns_value = p->returns_value;
13141 current_function_returns_null = p->returns_null;
13142 warn_about_return_type = p->warn_about_return_type;
13143 current_binding_level = p->binding_level;
13144 ctor_label = p->ctor_label;
13145 dtor_label = p->dtor_label;
13146 last_dtor_insn = p->last_dtor_insn;
13147 last_parm_cleanup_insn = p->last_parm_cleanup_insn;
13148 current_function_assigns_this = p->assigns_this;
13149 current_function_just_assigned_this = p->just_assigned_this;
13150 current_function_parms_stored = p->parms_stored;
13151 original_result_rtx = p->result_rtx;
13152 base_init_expr = p->base_init_expr;
13153 temp_name_counter = p->temp_name_counter;
13154 current_base_init_list = p->base_init_list;
13155 current_member_init_list = p->member_init_list;
13156 current_class_ptr = p->current_class_ptr;
13157 current_class_ref = p->current_class_ref;
13158 static_labelno = p->static_labelno;
13166 return function_depth != 0;