1 /* Process declarations and variables for C++ compiler.
2 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
4 Contributed by Michael Tiemann (tiemann@cygnus.com)
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
24 /* Process declarations and symbol lookup for C++ front end.
25 Also constructs types; the standard scalar types at initialization,
26 and structure, union, array and enum types when they are declared. */
28 /* ??? not all decl nodes are given the most useful possible
29 line numbers. For example, the CONST_DECLs for enum values. */
33 #include "coretypes.h"
40 #include "tree-inline.h"
50 #include "diagnostic.h"
53 #include "tree-flow.h"
55 static tree grokparms (cp_parameter_declarator *, tree *);
56 static const char *redeclaration_error_message (tree, tree);
58 static int decl_jump_unsafe (tree);
59 static void require_complete_types_for_parms (tree);
60 static int ambi_op_p (enum tree_code);
61 static int unary_op_p (enum tree_code);
62 static void push_local_name (tree);
63 static tree grok_reference_init (tree, tree, tree, tree *);
64 static tree grokfndecl (tree, tree, tree, tree, tree, int,
65 enum overload_flags, cp_cv_quals,
66 tree, int, int, int, int, int, int, tree);
67 static tree grokvardecl (tree, tree, const cp_decl_specifier_seq *,
69 static void record_unknown_type (tree, const char *);
70 static tree builtin_function_1 (const char *, tree, tree,
71 enum built_in_function code,
72 enum built_in_class cl, const char *,
74 static tree build_library_fn_1 (tree, enum tree_code, tree);
75 static int member_function_or_else (tree, tree, enum overload_flags);
76 static void bad_specifiers (tree, const char *, int, int, int, int,
78 static void check_for_uninitialized_const_var (tree);
79 static hashval_t typename_hash (const void *);
80 static int typename_compare (const void *, const void *);
81 static tree local_variable_p_walkfn (tree *, int *, void *);
82 static tree record_builtin_java_type (const char *, int);
83 static const char *tag_name (enum tag_types code);
84 static int walk_namespaces_r (tree, walk_namespaces_fn, void *);
85 static int walk_globals_r (tree, void*);
86 static int walk_vtables_r (tree, void*);
87 static tree make_label_decl (tree, int);
88 static void use_label (tree);
89 static void check_previous_goto_1 (tree, struct cp_binding_level *, tree,
91 static void check_previous_goto (struct named_label_use_list *);
92 static void check_switch_goto (struct cp_binding_level *);
93 static void check_previous_gotos (tree);
94 static void pop_label (tree, tree);
95 static void pop_labels (tree);
96 static void maybe_deduce_size_from_array_init (tree, tree);
97 static void layout_var_decl (tree);
98 static void maybe_commonize_var (tree);
99 static tree check_initializer (tree, tree, int, tree *);
100 static void make_rtl_for_nonlocal_decl (tree, tree, const char *);
101 static void save_function_data (tree);
102 static void check_function_type (tree, tree);
103 static void finish_constructor_body (void);
104 static void begin_destructor_body (void);
105 static void finish_destructor_body (void);
106 static tree create_array_type_for_decl (tree, tree, tree);
107 static tree get_atexit_node (void);
108 static tree get_dso_handle_node (void);
109 static tree start_cleanup_fn (void);
110 static void end_cleanup_fn (void);
111 static tree cp_make_fname_decl (tree, int);
112 static void initialize_predefined_identifiers (void);
113 static tree check_special_function_return_type
114 (special_function_kind, tree, tree);
115 static tree push_cp_library_fn (enum tree_code, tree);
116 static tree build_cp_library_fn (tree, enum tree_code, tree);
117 static void store_parm_decls (tree);
118 static void initialize_local_var (tree, tree);
119 static void expand_static_init (tree, tree);
120 static tree next_initializable_field (tree);
121 static tree reshape_init (tree, tree *);
122 static tree build_typename_type (tree, tree, tree);
124 /* Erroneous argument lists can use this *IFF* they do not modify it. */
125 tree error_mark_list;
127 /* The following symbols are subsumed in the cp_global_trees array, and
128 listed here individually for documentation purposes.
131 tree wchar_decl_node;
133 tree vtable_entry_type;
134 tree delta_type_node;
135 tree __t_desc_type_node;
136 tree ti_desc_type_node;
137 tree bltn_desc_type_node, ptr_desc_type_node;
138 tree ary_desc_type_node, func_desc_type_node, enum_desc_type_node;
139 tree class_desc_type_node, si_class_desc_type_node, vmi_class_desc_type_node;
140 tree ptm_desc_type_node;
141 tree base_desc_type_node;
143 tree class_type_node;
144 tree unknown_type_node;
146 Array type `vtable_entry_type[]'
149 tree vtbl_ptr_type_node;
156 A FUNCTION_DECL which can call `abort'. Not necessarily the
157 one that the user will declare, but sufficient to be called
158 by routines that want to abort the program.
162 The FUNCTION_DECL for the default `::operator delete'.
164 tree global_delete_fndecl;
167 tree type_info_type_node, tinfo_decl_id, tinfo_decl_type;
172 tree cp_global_trees[CPTI_MAX];
174 /* Indicates that there is a type value in some namespace, although
175 that is not necessarily in scope at the moment. */
177 tree global_type_node;
179 /* The node that holds the "name" of the global scope. */
180 tree global_scope_name;
182 /* Used only for jumps to as-yet undefined labels, since jumps to
183 defined labels can have their validity checked immediately. */
185 struct named_label_use_list GTY(())
187 struct cp_binding_level *binding_level;
190 location_t o_goto_locus;
191 struct named_label_use_list *next;
194 #define named_label_uses cp_function_chain->x_named_label_uses
196 #define local_names cp_function_chain->x_local_names
198 /* A list of objects which have constructors or destructors
199 which reside in the global scope. The decl is stored in
200 the TREE_VALUE slot and the initializer is stored
201 in the TREE_PURPOSE slot. */
202 tree static_aggregates;
206 /* A node for the integer constants 2, and 3. */
208 tree integer_two_node, integer_three_node;
210 /* A list of all LABEL_DECLs in the function that have names. Here so
211 we can clear out their names' definitions at the end of the
212 function, and so we can check the validity of jumps to these labels. */
214 struct named_label_list GTY(())
216 struct cp_binding_level *binding_level;
221 struct named_label_list *next;
222 unsigned int in_try_scope : 1;
223 unsigned int in_catch_scope : 1;
226 #define named_labels cp_function_chain->x_named_labels
228 /* The number of function bodies which we are currently processing.
229 (Zero if we are at namespace scope, one inside the body of a
230 function, two inside the body of a function in a local class, etc.) */
233 /* States indicating how grokdeclarator() should handle declspecs marked
234 with __attribute__((deprecated)). An object declared as
235 __attribute__((deprecated)) suppresses warnings of uses of other
238 enum deprecated_states {
243 static enum deprecated_states deprecated_state = DEPRECATED_NORMAL;
245 /* True if a declaration with an `extern' linkage specifier is being
247 bool have_extern_spec;
250 /* A TREE_LIST of VAR_DECLs. The TREE_PURPOSE is a RECORD_TYPE or
251 UNION_TYPE; the TREE_VALUE is a VAR_DECL with that type. At the
252 time the VAR_DECL was declared, the type was incomplete. */
254 static GTY(()) tree incomplete_vars;
256 /* Returns the kind of template specialization we are currently
257 processing, given that it's declaration contained N_CLASS_SCOPES
258 explicit scope qualifications. */
261 current_tmpl_spec_kind (int n_class_scopes)
263 int n_template_parm_scopes = 0;
264 int seen_specialization_p = 0;
265 int innermost_specialization_p = 0;
266 struct cp_binding_level *b;
268 /* Scan through the template parameter scopes. */
269 for (b = current_binding_level;
270 b->kind == sk_template_parms;
273 /* If we see a specialization scope inside a parameter scope,
274 then something is wrong. That corresponds to a declaration
277 template <class T> template <> ...
279 which is always invalid since [temp.expl.spec] forbids the
280 specialization of a class member template if the enclosing
281 class templates are not explicitly specialized as well. */
282 if (b->explicit_spec_p)
284 if (n_template_parm_scopes == 0)
285 innermost_specialization_p = 1;
287 seen_specialization_p = 1;
289 else if (seen_specialization_p == 1)
290 return tsk_invalid_member_spec;
292 ++n_template_parm_scopes;
295 /* Handle explicit instantiations. */
296 if (processing_explicit_instantiation)
298 if (n_template_parm_scopes != 0)
299 /* We've seen a template parameter list during an explicit
300 instantiation. For example:
302 template <class T> template void f(int);
304 This is erroneous. */
305 return tsk_invalid_expl_inst;
307 return tsk_expl_inst;
310 if (n_template_parm_scopes < n_class_scopes)
311 /* We've not seen enough template headers to match all the
312 specialized classes present. For example:
314 template <class T> void R<T>::S<T>::f(int);
316 This is invalid; there needs to be one set of template
317 parameters for each class. */
318 return tsk_insufficient_parms;
319 else if (n_template_parm_scopes == n_class_scopes)
320 /* We're processing a non-template declaration (even though it may
321 be a member of a template class.) For example:
323 template <class T> void S<T>::f(int);
325 The `class T' maches the `S<T>', leaving no template headers
326 corresponding to the `f'. */
328 else if (n_template_parm_scopes > n_class_scopes + 1)
329 /* We've got too many template headers. For example:
331 template <> template <class T> void f (T);
333 There need to be more enclosing classes. */
334 return tsk_excessive_parms;
336 /* This must be a template. It's of the form:
338 template <class T> template <class U> void S<T>::f(U);
340 This is a specialization if the innermost level was a
341 specialization; otherwise it's just a definition of the
343 return innermost_specialization_p ? tsk_expl_spec : tsk_template;
346 /* Exit the current scope. */
354 /* When a label goes out of scope, check to see if that label was used
355 in a valid manner, and issue any appropriate warnings or errors. */
358 pop_label (tree label, tree old_value)
360 if (!processing_template_decl)
362 if (DECL_INITIAL (label) == NULL_TREE)
366 cp_error_at ("label `%D' used but not defined", label);
367 #ifdef USE_MAPPED_LOCATION
368 location = input_location; /* FIXME want (input_filename, (line)0) */
370 location.file = input_filename;
373 /* Avoid crashing later. */
374 define_label (location, DECL_NAME (label));
376 else if (warn_unused_label && !TREE_USED (label))
377 cp_warning_at ("label `%D' defined but not used", label);
380 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), old_value);
383 /* At the end of a function, all labels declared within the function
384 go out of scope. BLOCK is the top-level block for the
388 pop_labels (tree block)
390 struct named_label_list *link;
392 /* Clear out the definitions of all label names, since their scopes
394 for (link = named_labels; link; link = link->next)
396 pop_label (link->label_decl, link->old_value);
397 /* Put the labels into the "variables" of the top-level block,
398 so debugger can see them. */
399 TREE_CHAIN (link->label_decl) = BLOCK_VARS (block);
400 BLOCK_VARS (block) = link->label_decl;
406 /* Exit a binding level.
407 Pop the level off, and restore the state of the identifier-decl mappings
408 that were in effect when this level was entered.
410 If KEEP == 1, this level had explicit declarations, so
411 and create a "block" (a BLOCK node) for the level
412 to record its declarations and subblocks for symbol table output.
414 If FUNCTIONBODY is nonzero, this level is the body of a function,
415 so create a block as if KEEP were set and also clear out all
418 If REVERSE is nonzero, reverse the order of decls before putting
419 them into the BLOCK. */
422 poplevel (int keep, int reverse, int functionbody)
425 /* The chain of decls was accumulated in reverse order.
426 Put it into forward order, just for cleanliness. */
428 int tmp = functionbody;
429 int real_functionbody;
433 int leaving_for_scope;
436 timevar_push (TV_NAME_LOOKUP);
441 my_friendly_assert (current_binding_level->kind != sk_class, 19990916);
443 real_functionbody = (current_binding_level->kind == sk_cleanup
444 ? ((functionbody = 0), tmp) : functionbody);
445 subblocks = functionbody >= 0 ? current_binding_level->blocks : 0;
447 my_friendly_assert (VEC_length(cp_class_binding,
448 current_binding_level->class_shadowed) == 0,
451 /* We used to use KEEP == 2 to indicate that the new block should go
452 at the beginning of the list of blocks at this binding level,
453 rather than the end. This hack is no longer used. */
454 my_friendly_assert (keep == 0 || keep == 1, 0);
456 if (current_binding_level->keep)
459 /* Any uses of undefined labels, and any defined labels, now operate
460 under constraints of next binding contour. */
461 if (cfun && !functionbody)
463 struct cp_binding_level *level_chain;
464 level_chain = current_binding_level->level_chain;
467 struct named_label_use_list *uses;
468 struct named_label_list *labels;
469 for (labels = named_labels; labels; labels = labels->next)
470 if (labels->binding_level == current_binding_level)
473 if (current_binding_level->kind == sk_try)
474 labels->in_try_scope = 1;
475 if (current_binding_level->kind == sk_catch)
476 labels->in_catch_scope = 1;
477 for (decl = labels->names_in_scope; decl;
478 decl = TREE_CHAIN (decl))
479 if (decl_jump_unsafe (decl))
480 labels->bad_decls = tree_cons (NULL_TREE, decl,
482 labels->binding_level = level_chain;
483 labels->names_in_scope = level_chain->names;
486 for (uses = named_label_uses; uses; uses = uses->next)
487 if (uses->binding_level == current_binding_level)
489 uses->binding_level = level_chain;
490 uses->names_in_scope = level_chain->names;
495 /* Get the decls in the order they were written.
496 Usually current_binding_level->names is in reverse order.
497 But parameter decls were previously put in forward order. */
500 current_binding_level->names
501 = decls = nreverse (current_binding_level->names);
503 decls = current_binding_level->names;
505 /* If there were any declarations or structure tags in that level,
506 or if this level is a function body,
507 create a BLOCK to record them for the life of this function. */
509 if (keep == 1 || functionbody)
510 block = make_node (BLOCK);
511 if (block != NULL_TREE)
513 BLOCK_VARS (block) = decls;
514 BLOCK_SUBBLOCKS (block) = subblocks;
517 /* In each subblock, record that this is its superior. */
519 for (link = subblocks; link; link = TREE_CHAIN (link))
520 BLOCK_SUPERCONTEXT (link) = block;
522 /* We still support the old for-scope rules, whereby the variables
523 in a for-init statement were in scope after the for-statement
524 ended. We only use the new rules if flag_new_for_scope is
527 = current_binding_level->kind == sk_for && flag_new_for_scope == 1;
529 /* Before we remove the declarations first check for unused variables. */
530 if (warn_unused_variable
531 && !processing_template_decl)
532 for (decl = getdecls (); decl; decl = TREE_CHAIN (decl))
533 if (TREE_CODE (decl) == VAR_DECL
534 && ! TREE_USED (decl)
535 && ! DECL_IN_SYSTEM_HEADER (decl)
536 && DECL_NAME (decl) && ! DECL_ARTIFICIAL (decl))
537 warning ("%Junused variable '%D'", decl, decl);
539 /* Remove declarations for all the DECLs in this level. */
540 for (link = decls; link; link = TREE_CHAIN (link))
542 if (leaving_for_scope && TREE_CODE (link) == VAR_DECL
545 tree name = DECL_NAME (link);
549 ob = outer_binding (name,
550 IDENTIFIER_BINDING (name),
553 ns_binding = IDENTIFIER_NAMESPACE_VALUE (name);
555 ns_binding = NULL_TREE;
557 if (ob && ob->scope == current_binding_level->level_chain)
558 /* We have something like:
563 and we are leaving the `for' scope. There's no reason to
564 keep the binding of the inner `i' in this case. */
565 pop_binding (name, link);
566 else if ((ob && (TREE_CODE (ob->value) == TYPE_DECL))
567 || (ns_binding && TREE_CODE (ns_binding) == TYPE_DECL))
568 /* Here, we have something like:
576 We must pop the for-scope binding so we know what's a
577 type and what isn't. */
578 pop_binding (name, link);
581 /* Mark this VAR_DECL as dead so that we can tell we left it
582 there only for backward compatibility. */
583 DECL_DEAD_FOR_LOCAL (link) = 1;
585 /* Keep track of what should have happened when we
586 popped the binding. */
588 DECL_SHADOWED_FOR_VAR (link) = ob->value;
590 /* Add it to the list of dead variables in the next
591 outermost binding to that we can remove these when we
592 leave that binding. */
593 current_binding_level->level_chain->dead_vars_from_for
594 = tree_cons (NULL_TREE, link,
595 current_binding_level->level_chain->
598 /* Although we don't pop the cxx_binding, we do clear
599 its SCOPE since the scope is going away now. */
600 IDENTIFIER_BINDING (name)->scope
601 = current_binding_level->level_chain;
606 /* Remove the binding. */
609 if (TREE_CODE (decl) == TREE_LIST)
610 decl = TREE_VALUE (decl);
613 pop_binding (DECL_NAME (decl), decl);
614 else if (TREE_CODE (decl) == OVERLOAD)
615 pop_binding (DECL_NAME (OVL_FUNCTION (decl)), decl);
621 /* Remove declarations for any `for' variables from inner scopes
622 that we kept around. */
623 for (link = current_binding_level->dead_vars_from_for;
624 link; link = TREE_CHAIN (link))
625 pop_binding (DECL_NAME (TREE_VALUE (link)), TREE_VALUE (link));
627 /* Restore the IDENTIFIER_TYPE_VALUEs. */
628 for (link = current_binding_level->type_shadowed;
629 link; link = TREE_CHAIN (link))
630 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link), TREE_VALUE (link));
632 /* Restore the IDENTIFIER_LABEL_VALUEs for local labels. */
633 for (link = current_binding_level->shadowed_labels;
635 link = TREE_CHAIN (link))
636 pop_label (TREE_VALUE (link), TREE_PURPOSE (link));
638 /* There may be OVERLOADs (wrapped in TREE_LISTs) on the BLOCK_VARs
639 list if a `using' declaration put them there. The debugging
640 back-ends won't understand OVERLOAD, so we remove them here.
641 Because the BLOCK_VARS are (temporarily) shared with
642 CURRENT_BINDING_LEVEL->NAMES we must do this fixup after we have
643 popped all the bindings. */
648 for (d = &BLOCK_VARS (block); *d; )
650 if (TREE_CODE (*d) == TREE_LIST)
651 *d = TREE_CHAIN (*d);
653 d = &TREE_CHAIN (*d);
657 /* If the level being exited is the top level of a function,
658 check over all the labels. */
661 /* Since this is the top level block of a function, the vars are
662 the function's parameters. Don't leave them in the BLOCK
663 because they are found in the FUNCTION_DECL instead. */
664 BLOCK_VARS (block) = 0;
668 kind = current_binding_level->kind;
669 if (kind == sk_cleanup)
673 /* If this is a temporary binding created for a cleanup, then we'll
674 have pushed a statement list level. Pop that, create a new
675 BIND_EXPR for the block, and insert it into the stream. */
676 stmt = pop_stmt_list (current_binding_level->statement_list);
677 stmt = c_build_bind_expr (block, stmt);
683 DECL_INITIAL (current_function_decl) = block;
685 current_binding_level->blocks
686 = chainon (current_binding_level->blocks, block);
688 /* If we did not make a block for the level just exited,
689 any blocks made for inner levels
690 (since they cannot be recorded as subblocks in that level)
691 must be carried forward so they will later become subblocks
692 of something else. */
694 current_binding_level->blocks
695 = chainon (current_binding_level->blocks, subblocks);
697 /* Each and every BLOCK node created here in `poplevel' is important
698 (e.g. for proper debugging information) so if we created one
699 earlier, mark it as "used". */
701 TREE_USED (block) = 1;
703 /* All temporary bindings created for cleanups are popped silently. */
704 if (kind == sk_cleanup)
707 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, block);
710 /* Delete the node BLOCK from the current binding level.
711 This is used for the block inside a stmt expr ({...})
712 so that the block can be reinserted where appropriate. */
715 delete_block (tree block)
718 if (current_binding_level->blocks == block)
719 current_binding_level->blocks = TREE_CHAIN (block);
720 for (t = current_binding_level->blocks; t;)
722 if (TREE_CHAIN (t) == block)
723 TREE_CHAIN (t) = TREE_CHAIN (block);
727 TREE_CHAIN (block) = NULL_TREE;
728 /* Clear TREE_USED which is always set by poplevel.
729 The flag is set again if insert_block is called. */
730 TREE_USED (block) = 0;
733 /* Insert BLOCK at the end of the list of subblocks of the
734 current binding level. This is used when a BIND_EXPR is expanded,
735 to handle the BLOCK node inside the BIND_EXPR. */
738 insert_block (tree block)
740 TREE_USED (block) = 1;
741 current_binding_level->blocks
742 = chainon (current_binding_level->blocks, block);
745 /* Returns nonzero if T is a virtual function table. */
748 vtable_decl_p (tree t, void* data ATTRIBUTE_UNUSED )
750 return (TREE_CODE (t) == VAR_DECL && DECL_VIRTUAL_P (t));
753 /* Returns nonzero if T is a TYPE_DECL for a type with virtual
757 vtype_decl_p (tree t, void *data ATTRIBUTE_UNUSED )
759 return (TREE_CODE (t) == TYPE_DECL
760 && TREE_CODE (TREE_TYPE (t)) == RECORD_TYPE
761 && TYPE_POLYMORPHIC_P (TREE_TYPE (t)));
764 struct walk_globals_data {
770 /* Walk the vtable declarations in NAMESPACE. Whenever one is found
771 for which P returns nonzero, call F with its address. If any call
772 to F returns a nonzero value, return a nonzero value. */
775 walk_vtables_r (tree namespace, void* data)
777 struct walk_globals_data* wgd = (struct walk_globals_data *) data;
778 walk_globals_fn f = wgd->f;
780 tree decl = NAMESPACE_LEVEL (namespace)->vtables;
783 for (; decl ; decl = TREE_CHAIN (decl))
784 result |= (*f) (&decl, d);
789 /* Walk the vtable declarations. Whenever one is found for which P
790 returns nonzero, call F with its address. If any call to F
791 returns a nonzero value, return a nonzero value. */
793 walk_vtables (walk_globals_pred p, walk_globals_fn f, void *data)
795 struct walk_globals_data wgd;
800 return walk_namespaces (walk_vtables_r, &wgd);
803 /* Walk all the namespaces contained NAMESPACE, including NAMESPACE
804 itself, calling F for each. The DATA is passed to F as well. */
807 walk_namespaces_r (tree namespace, walk_namespaces_fn f, void* data)
810 tree current = NAMESPACE_LEVEL (namespace)->namespaces;
812 result |= (*f) (namespace, data);
814 for (; current; current = TREE_CHAIN (current))
815 result |= walk_namespaces_r (current, f, data);
820 /* Walk all the namespaces, calling F for each. The DATA is passed to
824 walk_namespaces (walk_namespaces_fn f, void* data)
826 return walk_namespaces_r (global_namespace, f, data);
829 /* Walk the global declarations in NAMESPACE. Whenever one is found
830 for which P returns nonzero, call F with its address. If any call
831 to F returns a nonzero value, return a nonzero value. */
834 walk_globals_r (tree namespace, void* data)
836 struct walk_globals_data* wgd = (struct walk_globals_data *) data;
837 walk_globals_pred p = wgd->p;
838 walk_globals_fn f = wgd->f;
843 t = &NAMESPACE_LEVEL (namespace)->names;
850 result |= (*f) (t, d);
852 /* If F changed *T, then *T still points at the next item to
855 t = &TREE_CHAIN (*t);
861 /* Walk the global declarations. Whenever one is found for which P
862 returns true, call F with its address. If any call to F
863 returns true, return true. */
866 walk_globals (walk_globals_pred p, walk_globals_fn f, void *data)
868 struct walk_globals_data wgd;
873 return walk_namespaces (walk_globals_r, &wgd);
876 /* Call wrapup_globals_declarations for the globals in NAMESPACE. If
877 DATA is non-NULL, this is the last time we will call
878 wrapup_global_declarations for this NAMESPACE. */
881 wrapup_globals_for_namespace (tree namespace, void* data)
883 struct cp_binding_level *level = NAMESPACE_LEVEL (namespace);
884 varray_type statics = level->static_decls;
885 tree *vec = &VARRAY_TREE (statics, 0);
886 int len = VARRAY_ACTIVE_SIZE (statics);
887 int last_time = (data != 0);
891 check_global_declarations (vec, len);
895 /* Write out any globals that need to be output. */
896 return wrapup_global_declarations (vec, len);
900 /* In C++, you don't have to write `struct S' to refer to `S'; you
901 can just use `S'. We accomplish this by creating a TYPE_DECL as
902 if the user had written `typedef struct S S'. Create and return
903 the TYPE_DECL for TYPE. */
906 create_implicit_typedef (tree name, tree type)
910 decl = build_decl (TYPE_DECL, name, type);
911 DECL_ARTIFICIAL (decl) = 1;
912 /* There are other implicit type declarations, like the one *within*
913 a class that allows you to write `S::S'. We must distinguish
915 SET_DECL_IMPLICIT_TYPEDEF_P (decl);
916 TYPE_NAME (type) = decl;
921 /* Remember a local name for name-mangling purposes. */
924 push_local_name (tree decl)
929 timevar_push (TV_NAME_LOOKUP);
931 VARRAY_TREE_INIT (local_names, 8, "local_names");
933 name = DECL_NAME (decl);
935 nelts = VARRAY_ACTIVE_SIZE (local_names);
936 for (i = 0; i < nelts; i++)
938 t = VARRAY_TREE (local_names, i);
939 if (DECL_NAME (t) == name)
941 if (!DECL_LANG_SPECIFIC (decl))
942 retrofit_lang_decl (decl);
943 DECL_LANG_SPECIFIC (decl)->decl_flags.u2sel = 1;
944 if (DECL_LANG_SPECIFIC (t))
945 DECL_DISCRIMINATOR (decl) = DECL_DISCRIMINATOR (t) + 1;
947 DECL_DISCRIMINATOR (decl) = 1;
949 VARRAY_TREE (local_names, i) = decl;
950 timevar_pop (TV_NAME_LOOKUP);
955 VARRAY_PUSH_TREE (local_names, decl);
956 timevar_pop (TV_NAME_LOOKUP);
959 /* Subroutine of duplicate_decls: return truthvalue of whether
960 or not types of these decls match.
962 For C++, we must compare the parameter list so that `int' can match
963 `int&' in a parameter position, but `int&' is not confused with
967 decls_match (tree newdecl, tree olddecl)
971 if (newdecl == olddecl)
974 if (TREE_CODE (newdecl) != TREE_CODE (olddecl))
975 /* If the two DECLs are not even the same kind of thing, we're not
976 interested in their types. */
979 if (TREE_CODE (newdecl) == FUNCTION_DECL)
981 tree f1 = TREE_TYPE (newdecl);
982 tree f2 = TREE_TYPE (olddecl);
983 tree p1 = TYPE_ARG_TYPES (f1);
984 tree p2 = TYPE_ARG_TYPES (f2);
986 if (CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl)
987 && ! (DECL_EXTERN_C_P (newdecl)
988 && DECL_EXTERN_C_P (olddecl)))
991 if (TREE_CODE (f1) != TREE_CODE (f2))
994 if (same_type_p (TREE_TYPE (f1), TREE_TYPE (f2)))
996 if (p2 == NULL_TREE && DECL_EXTERN_C_P (olddecl)
997 && (DECL_BUILT_IN (olddecl)
998 #ifndef NO_IMPLICIT_EXTERN_C
999 || (DECL_IN_SYSTEM_HEADER (newdecl) && !DECL_CLASS_SCOPE_P (newdecl))
1000 || (DECL_IN_SYSTEM_HEADER (olddecl) && !DECL_CLASS_SCOPE_P (olddecl))
1004 types_match = self_promoting_args_p (p1);
1005 if (p1 == void_list_node)
1006 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
1008 #ifndef NO_IMPLICIT_EXTERN_C
1009 else if (p1 == NULL_TREE
1010 && (DECL_EXTERN_C_P (olddecl)
1011 && DECL_IN_SYSTEM_HEADER (olddecl)
1012 && !DECL_CLASS_SCOPE_P (olddecl))
1013 && (DECL_EXTERN_C_P (newdecl)
1014 && DECL_IN_SYSTEM_HEADER (newdecl)
1015 && !DECL_CLASS_SCOPE_P (newdecl)))
1017 types_match = self_promoting_args_p (p2);
1018 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
1022 types_match = compparms (p1, p2);
1027 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
1029 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl))
1030 != TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)))
1033 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
1034 DECL_TEMPLATE_PARMS (olddecl)))
1037 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
1038 types_match = same_type_p (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl)),
1039 TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl)));
1041 types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl),
1042 DECL_TEMPLATE_RESULT (newdecl));
1046 if (TREE_TYPE (newdecl) == error_mark_node)
1047 types_match = TREE_TYPE (olddecl) == error_mark_node;
1048 else if (TREE_TYPE (olddecl) == NULL_TREE)
1049 types_match = TREE_TYPE (newdecl) == NULL_TREE;
1050 else if (TREE_TYPE (newdecl) == NULL_TREE)
1053 types_match = comptypes (TREE_TYPE (newdecl),
1054 TREE_TYPE (olddecl),
1055 COMPARE_REDECLARATION);
1061 /* If NEWDECL is `static' and an `extern' was seen previously,
1062 warn about it. OLDDECL is the previous declaration.
1064 Note that this does not apply to the C++ case of declaring
1065 a variable `extern const' and then later `const'.
1067 Don't complain about built-in functions, since they are beyond
1068 the user's control. */
1071 warn_extern_redeclared_static (tree newdecl, tree olddecl)
1075 if (TREE_CODE (newdecl) == TYPE_DECL
1076 || TREE_CODE (newdecl) == TEMPLATE_DECL
1077 || TREE_CODE (newdecl) == CONST_DECL
1078 || TREE_CODE (newdecl) == NAMESPACE_DECL)
1081 /* Don't get confused by static member functions; that's a different
1083 if (TREE_CODE (newdecl) == FUNCTION_DECL
1084 && DECL_STATIC_FUNCTION_P (newdecl))
1087 /* If the old declaration was `static', or the new one isn't, then
1088 then everything is OK. */
1089 if (DECL_THIS_STATIC (olddecl) || !DECL_THIS_STATIC (newdecl))
1092 /* It's OK to declare a builtin function as `static'. */
1093 if (TREE_CODE (olddecl) == FUNCTION_DECL
1094 && DECL_ARTIFICIAL (olddecl))
1097 name = DECL_ASSEMBLER_NAME (newdecl);
1098 pedwarn ("`%D' was declared `extern' and later `static'", newdecl);
1099 cp_pedwarn_at ("previous declaration of `%D'", olddecl);
1102 /* If NEWDECL is a redeclaration of OLDDECL, merge the declarations.
1103 If the redeclaration is invalid, a diagnostic is issued, and the
1104 error_mark_node is returned. Otherwise, OLDDECL is returned.
1106 If NEWDECL is not a redeclaration of OLDDECL, NULL_TREE is
1110 duplicate_decls (tree newdecl, tree olddecl)
1112 unsigned olddecl_uid = DECL_UID (olddecl);
1113 int olddecl_friend = 0, types_match = 0;
1114 int new_defines_function = 0;
1116 if (newdecl == olddecl)
1119 types_match = decls_match (newdecl, olddecl);
1121 /* If either the type of the new decl or the type of the old decl is an
1122 error_mark_node, then that implies that we have already issued an
1123 error (earlier) for some bogus type specification, and in that case,
1124 it is rather pointless to harass the user with yet more error message
1125 about the same declaration, so just pretend the types match here. */
1126 if (TREE_TYPE (newdecl) == error_mark_node
1127 || TREE_TYPE (olddecl) == error_mark_node)
1130 if (DECL_P (olddecl)
1131 && TREE_CODE (newdecl) == FUNCTION_DECL
1132 && TREE_CODE (olddecl) == FUNCTION_DECL
1133 && (DECL_UNINLINABLE (newdecl) || DECL_UNINLINABLE (olddecl)))
1135 if (DECL_DECLARED_INLINE_P (newdecl)
1136 && DECL_UNINLINABLE (newdecl)
1137 && lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl)))
1138 /* Already warned elsewhere. */;
1139 else if (DECL_DECLARED_INLINE_P (olddecl)
1140 && DECL_UNINLINABLE (olddecl)
1141 && lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl)))
1142 /* Already warned. */;
1143 else if (DECL_DECLARED_INLINE_P (newdecl)
1144 && DECL_UNINLINABLE (olddecl)
1145 && lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl)))
1147 warning ("%Jfunction '%D' redeclared as inline", newdecl, newdecl);
1148 warning ("%Jprevious declaration of '%D' with attribute noinline",
1151 else if (DECL_DECLARED_INLINE_P (olddecl)
1152 && DECL_UNINLINABLE (newdecl)
1153 && lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl)))
1155 warning ("%Jfunction '%D' redeclared with attribute noinline",
1157 warning ("%Jprevious declaration of '%D' was inline",
1162 /* Check for redeclaration and other discrepancies. */
1163 if (TREE_CODE (olddecl) == FUNCTION_DECL
1164 && DECL_ARTIFICIAL (olddecl))
1166 if (TREE_CODE (newdecl) != FUNCTION_DECL)
1168 /* Avoid warnings redeclaring anticipated built-ins. */
1169 if (DECL_ANTICIPATED (olddecl))
1172 /* If you declare a built-in or predefined function name as static,
1173 the old definition is overridden, but optionally warn this was a
1174 bad choice of name. */
1175 if (! TREE_PUBLIC (newdecl))
1178 warning ("shadowing %s function `%#D'",
1179 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
1181 /* Discard the old built-in function. */
1184 /* If the built-in is not ansi, then programs can override
1185 it even globally without an error. */
1186 else if (! DECL_BUILT_IN (olddecl))
1187 warning ("library function `%#D' redeclared as non-function `%#D'",
1191 error ("declaration of `%#D'", newdecl);
1192 error ("conflicts with built-in declaration `%#D'",
1197 else if (!types_match)
1199 /* Avoid warnings redeclaring anticipated built-ins. */
1200 if (DECL_ANTICIPATED (olddecl))
1202 /* Deal with fileptr_type_node. FILE type is not known
1203 at the time we create the builtins. */
1206 for (t1 = TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
1207 t2 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
1209 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2))
1212 else if (TREE_VALUE (t2) == fileptr_type_node)
1214 tree t = TREE_VALUE (t1);
1216 if (TREE_CODE (t) == POINTER_TYPE
1217 && TYPE_NAME (TREE_TYPE (t))
1218 && DECL_NAME (TYPE_NAME (TREE_TYPE (t)))
1219 == get_identifier ("FILE")
1220 && compparms (TREE_CHAIN (t1), TREE_CHAIN (t2)))
1222 tree oldargs = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
1224 TYPE_ARG_TYPES (TREE_TYPE (olddecl))
1225 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
1226 types_match = decls_match (newdecl, olddecl);
1228 return duplicate_decls (newdecl, olddecl);
1229 TYPE_ARG_TYPES (TREE_TYPE (olddecl)) = oldargs;
1232 else if (! same_type_p (TREE_VALUE (t1), TREE_VALUE (t2)))
1235 else if ((DECL_EXTERN_C_P (newdecl)
1236 && DECL_EXTERN_C_P (olddecl))
1237 || compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
1238 TYPE_ARG_TYPES (TREE_TYPE (olddecl))))
1240 /* A near match; override the builtin. */
1242 if (TREE_PUBLIC (newdecl))
1244 warning ("new declaration `%#D'", newdecl);
1245 warning ("ambiguates built-in declaration `%#D'",
1248 else if (warn_shadow)
1249 warning ("shadowing %s function `%#D'",
1250 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
1254 /* Discard the old built-in function. */
1257 /* Replace the old RTL to avoid problems with inlining. */
1258 COPY_DECL_RTL (newdecl, olddecl);
1260 /* Even if the types match, prefer the new declarations type
1261 for anticipated built-ins, for exception lists, etc... */
1262 else if (DECL_ANTICIPATED (olddecl))
1264 tree type = TREE_TYPE (newdecl);
1265 tree attribs = (*targetm.merge_type_attributes)
1266 (TREE_TYPE (olddecl), type);
1268 type = cp_build_type_attribute_variant (type, attribs);
1269 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = type;
1272 /* Whether or not the builtin can throw exceptions has no
1273 bearing on this declarator. */
1274 TREE_NOTHROW (olddecl) = 0;
1276 if (DECL_THIS_STATIC (newdecl) && !DECL_THIS_STATIC (olddecl))
1278 /* If a builtin function is redeclared as `static', merge
1279 the declarations, but make the original one static. */
1280 DECL_THIS_STATIC (olddecl) = 1;
1281 TREE_PUBLIC (olddecl) = 0;
1283 /* Make the old declaration consistent with the new one so
1284 that all remnants of the builtin-ness of this function
1285 will be banished. */
1286 SET_DECL_LANGUAGE (olddecl, DECL_LANGUAGE (newdecl));
1287 COPY_DECL_RTL (newdecl, olddecl);
1290 else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
1292 if ((TREE_CODE (olddecl) == TYPE_DECL && DECL_ARTIFICIAL (olddecl)
1293 && TREE_CODE (newdecl) != TYPE_DECL
1294 && ! (TREE_CODE (newdecl) == TEMPLATE_DECL
1295 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL))
1296 || (TREE_CODE (newdecl) == TYPE_DECL && DECL_ARTIFICIAL (newdecl)
1297 && TREE_CODE (olddecl) != TYPE_DECL
1298 && ! (TREE_CODE (olddecl) == TEMPLATE_DECL
1299 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl))
1302 /* We do nothing special here, because C++ does such nasty
1303 things with TYPE_DECLs. Instead, just let the TYPE_DECL
1304 get shadowed, and know that if we need to find a TYPE_DECL
1305 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
1306 slot of the identifier. */
1310 if ((TREE_CODE (newdecl) == FUNCTION_DECL
1311 && DECL_FUNCTION_TEMPLATE_P (olddecl))
1312 || (TREE_CODE (olddecl) == FUNCTION_DECL
1313 && DECL_FUNCTION_TEMPLATE_P (newdecl)))
1316 error ("`%#D' redeclared as different kind of symbol", newdecl);
1317 if (TREE_CODE (olddecl) == TREE_LIST)
1318 olddecl = TREE_VALUE (olddecl);
1319 cp_error_at ("previous declaration of `%#D'", olddecl);
1321 return error_mark_node;
1323 else if (!types_match)
1325 if (CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl))
1326 /* These are certainly not duplicate declarations; they're
1327 from different scopes. */
1330 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
1332 /* The name of a class template may not be declared to refer to
1333 any other template, class, function, object, namespace, value,
1334 or type in the same scope. */
1335 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
1336 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
1338 error ("declaration of template `%#D'", newdecl);
1339 cp_error_at ("conflicts with previous declaration `%#D'",
1342 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
1343 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
1344 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
1345 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))))
1346 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
1347 DECL_TEMPLATE_PARMS (olddecl))
1348 /* Template functions can be disambiguated by
1350 && same_type_p (TREE_TYPE (TREE_TYPE (newdecl)),
1351 TREE_TYPE (TREE_TYPE (olddecl))))
1353 error ("new declaration `%#D'", newdecl);
1354 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
1358 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1360 if (DECL_EXTERN_C_P (newdecl) && DECL_EXTERN_C_P (olddecl))
1362 error ("declaration of C function `%#D' conflicts with",
1364 cp_error_at ("previous declaration `%#D' here", olddecl);
1366 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
1367 TYPE_ARG_TYPES (TREE_TYPE (olddecl))))
1369 error ("new declaration `%#D'", newdecl);
1370 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
1377 error ("conflicting declaration '%#D'", newdecl);
1378 cp_error_at ("'%D' has a previous declaration as `%#D'",
1383 else if (TREE_CODE (newdecl) == FUNCTION_DECL
1384 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl)
1385 && (!DECL_TEMPLATE_INFO (newdecl)
1386 || (DECL_TI_TEMPLATE (newdecl)
1387 != DECL_TI_TEMPLATE (olddecl))))
1388 || (DECL_TEMPLATE_SPECIALIZATION (newdecl)
1389 && (!DECL_TEMPLATE_INFO (olddecl)
1390 || (DECL_TI_TEMPLATE (olddecl)
1391 != DECL_TI_TEMPLATE (newdecl))))))
1392 /* It's OK to have a template specialization and a non-template
1393 with the same type, or to have specializations of two
1394 different templates with the same type. Note that if one is a
1395 specialization, and the other is an instantiation of the same
1396 template, that we do not exit at this point. That situation
1397 can occur if we instantiate a template class, and then
1398 specialize one of its methods. This situation is valid, but
1399 the declarations must be merged in the usual way. */
1401 else if (TREE_CODE (newdecl) == FUNCTION_DECL
1402 && ((DECL_TEMPLATE_INSTANTIATION (olddecl)
1403 && !DECL_USE_TEMPLATE (newdecl))
1404 || (DECL_TEMPLATE_INSTANTIATION (newdecl)
1405 && !DECL_USE_TEMPLATE (olddecl))))
1406 /* One of the declarations is a template instantiation, and the
1407 other is not a template at all. That's OK. */
1409 else if (TREE_CODE (newdecl) == NAMESPACE_DECL)
1411 /* In [namespace.alias] we have:
1413 In a declarative region, a namespace-alias-definition can be
1414 used to redefine a namespace-alias declared in that declarative
1415 region to refer only to the namespace to which it already
1418 Therefore, if we encounter a second alias directive for the same
1419 alias, we can just ignore the second directive. */
1420 if (DECL_NAMESPACE_ALIAS (newdecl)
1421 && (DECL_NAMESPACE_ALIAS (newdecl)
1422 == DECL_NAMESPACE_ALIAS (olddecl)))
1424 /* [namespace.alias]
1426 A namespace-name or namespace-alias shall not be declared as
1427 the name of any other entity in the same declarative region.
1428 A namespace-name defined at global scope shall not be
1429 declared as the name of any other entity in any glogal scope
1431 error ("declaration of `namespace %D' conflicts with", newdecl);
1432 cp_error_at ("previous declaration of `namespace %D' here", olddecl);
1433 return error_mark_node;
1437 const char *errmsg = redeclaration_error_message (newdecl, olddecl);
1440 error (errmsg, newdecl);
1441 if (DECL_NAME (olddecl) != NULL_TREE)
1442 cp_error_at ((DECL_INITIAL (olddecl)
1443 && namespace_bindings_p ())
1444 ? "`%#D' previously defined here"
1445 : "`%#D' previously declared here", olddecl);
1446 return error_mark_node;
1448 else if (TREE_CODE (olddecl) == FUNCTION_DECL
1449 && DECL_INITIAL (olddecl) != NULL_TREE
1450 && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE
1451 && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE)
1453 /* Prototype decl follows defn w/o prototype. */
1454 cp_warning_at ("prototype for `%#D'", newdecl);
1455 warning ("%Jfollows non-prototype definition here", olddecl);
1457 else if (TREE_CODE (olddecl) == FUNCTION_DECL
1458 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
1460 /* extern "C" int foo ();
1461 int foo () { bar (); }
1463 if (current_lang_depth () == 0)
1464 SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl));
1467 cp_error_at ("previous declaration of `%#D' with %L linkage",
1468 olddecl, DECL_LANGUAGE (olddecl));
1469 error ("conflicts with new declaration with %L linkage",
1470 DECL_LANGUAGE (newdecl));
1474 if (DECL_LANG_SPECIFIC (olddecl) && DECL_USE_TEMPLATE (olddecl))
1476 else if (TREE_CODE (olddecl) == FUNCTION_DECL)
1478 tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
1479 tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
1482 if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
1483 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
1485 for (; t1 && t1 != void_list_node;
1486 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
1487 if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
1489 if (1 == simple_cst_equal (TREE_PURPOSE (t1),
1492 pedwarn ("default argument given for parameter %d of `%#D'",
1494 cp_pedwarn_at ("after previous specification in `%#D'",
1499 error ("default argument given for parameter %d of `%#D'",
1501 cp_error_at ("after previous specification in `%#D'",
1506 if (DECL_DECLARED_INLINE_P (newdecl)
1507 && ! DECL_DECLARED_INLINE_P (olddecl)
1508 && TREE_ADDRESSABLE (olddecl) && warn_inline)
1510 warning ("`%#D' was used before it was declared inline", newdecl);
1511 warning ("%Jprevious non-inline declaration here", olddecl);
1516 /* Do not merge an implicit typedef with an explicit one. In:
1520 typedef class A A __attribute__ ((foo));
1522 the attribute should apply only to the typedef. */
1523 if (TREE_CODE (olddecl) == TYPE_DECL
1524 && (DECL_IMPLICIT_TYPEDEF_P (olddecl)
1525 || DECL_IMPLICIT_TYPEDEF_P (newdecl)))
1528 /* If new decl is `static' and an `extern' was seen previously,
1530 warn_extern_redeclared_static (newdecl, olddecl);
1532 /* We have committed to returning 1 at this point. */
1533 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1535 /* Now that functions must hold information normally held
1536 by field decls, there is extra work to do so that
1537 declaration information does not get destroyed during
1539 if (DECL_VINDEX (olddecl))
1540 DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
1541 if (DECL_CONTEXT (olddecl))
1542 DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
1543 DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
1544 DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
1545 DECL_PURE_VIRTUAL_P (newdecl) |= DECL_PURE_VIRTUAL_P (olddecl);
1546 DECL_VIRTUAL_P (newdecl) |= DECL_VIRTUAL_P (olddecl);
1547 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl);
1548 DECL_THIS_STATIC (newdecl) |= DECL_THIS_STATIC (olddecl);
1549 if (DECL_OVERLOADED_OPERATOR_P (olddecl) != ERROR_MARK)
1550 SET_OVERLOADED_OPERATOR_CODE
1551 (newdecl, DECL_OVERLOADED_OPERATOR_P (olddecl));
1552 new_defines_function = DECL_INITIAL (newdecl) != NULL_TREE;
1554 /* Optionally warn about more than one declaration for the same
1555 name, but don't warn about a function declaration followed by a
1557 if (warn_redundant_decls && ! DECL_ARTIFICIAL (olddecl)
1558 && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
1559 /* Don't warn about extern decl followed by definition. */
1560 && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))
1561 /* Don't warn about friends, let add_friend take care of it. */
1562 && ! (DECL_FRIEND_P (newdecl) || DECL_FRIEND_P (olddecl)))
1564 warning ("redundant redeclaration of `%D' in same scope", newdecl);
1565 cp_warning_at ("previous declaration of `%D'", olddecl);
1569 /* Deal with C++: must preserve virtual function table size. */
1570 if (TREE_CODE (olddecl) == TYPE_DECL)
1572 tree newtype = TREE_TYPE (newdecl);
1573 tree oldtype = TREE_TYPE (olddecl);
1575 if (newtype != error_mark_node && oldtype != error_mark_node
1576 && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
1577 CLASSTYPE_FRIEND_CLASSES (newtype)
1578 = CLASSTYPE_FRIEND_CLASSES (oldtype);
1580 DECL_ORIGINAL_TYPE (newdecl) = DECL_ORIGINAL_TYPE (olddecl);
1583 /* Copy all the DECL_... slots specified in the new decl
1584 except for any that we copy here from the old type. */
1585 DECL_ATTRIBUTES (newdecl)
1586 = (*targetm.merge_decl_attributes) (olddecl, newdecl);
1588 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
1590 TREE_TYPE (olddecl) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl));
1591 DECL_TEMPLATE_SPECIALIZATIONS (olddecl)
1592 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl),
1593 DECL_TEMPLATE_SPECIALIZATIONS (newdecl));
1595 /* If the new declaration is a definition, update the file and
1596 line information on the declaration. */
1597 if (DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)) == NULL_TREE
1598 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl)) != NULL_TREE)
1600 DECL_SOURCE_LOCATION (olddecl)
1601 = DECL_SOURCE_LOCATION (DECL_TEMPLATE_RESULT (olddecl))
1602 = DECL_SOURCE_LOCATION (newdecl);
1603 if (DECL_FUNCTION_TEMPLATE_P (newdecl))
1604 DECL_ARGUMENTS (DECL_TEMPLATE_RESULT (olddecl))
1605 = DECL_ARGUMENTS (DECL_TEMPLATE_RESULT (newdecl));
1608 if (DECL_FUNCTION_TEMPLATE_P (newdecl))
1610 DECL_INLINE (DECL_TEMPLATE_RESULT (olddecl))
1611 |= DECL_INLINE (DECL_TEMPLATE_RESULT (newdecl));
1612 DECL_DECLARED_INLINE_P (DECL_TEMPLATE_RESULT (olddecl))
1613 |= DECL_DECLARED_INLINE_P (DECL_TEMPLATE_RESULT (newdecl));
1621 /* Automatically handles default parameters. */
1622 tree oldtype = TREE_TYPE (olddecl);
1625 /* Merge the data types specified in the two decls. */
1626 newtype = merge_types (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
1628 /* If merge_types produces a non-typedef type, just use the old type. */
1629 if (TREE_CODE (newdecl) == TYPE_DECL
1630 && newtype == DECL_ORIGINAL_TYPE (newdecl))
1633 if (TREE_CODE (newdecl) == VAR_DECL)
1635 DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
1636 DECL_INITIALIZED_P (newdecl) |= DECL_INITIALIZED_P (olddecl);
1637 DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (newdecl)
1638 |= DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (olddecl);
1641 /* Do this after calling `merge_types' so that default
1642 parameters don't confuse us. */
1643 else if (TREE_CODE (newdecl) == FUNCTION_DECL
1644 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))
1645 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl))))
1647 TREE_TYPE (newdecl) = build_exception_variant (newtype,
1648 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)));
1649 TREE_TYPE (olddecl) = build_exception_variant (newtype,
1650 TYPE_RAISES_EXCEPTIONS (oldtype));
1652 if ((pedantic || ! DECL_IN_SYSTEM_HEADER (olddecl))
1653 && ! DECL_IS_BUILTIN (olddecl)
1655 && !comp_except_specs (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)),
1656 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl)), 1))
1658 error ("declaration of `%F' throws different exceptions",
1660 cp_error_at ("than previous declaration `%F'", olddecl);
1663 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
1665 /* Lay the type out, unless already done. */
1666 if (! same_type_p (newtype, oldtype)
1667 && TREE_TYPE (newdecl) != error_mark_node
1668 && !(processing_template_decl && uses_template_parms (newdecl)))
1669 layout_type (TREE_TYPE (newdecl));
1671 if ((TREE_CODE (newdecl) == VAR_DECL
1672 || TREE_CODE (newdecl) == PARM_DECL
1673 || TREE_CODE (newdecl) == RESULT_DECL
1674 || TREE_CODE (newdecl) == FIELD_DECL
1675 || TREE_CODE (newdecl) == TYPE_DECL)
1676 && !(processing_template_decl && uses_template_parms (newdecl)))
1677 layout_decl (newdecl, 0);
1679 /* Merge the type qualifiers. */
1680 if (TREE_READONLY (newdecl))
1681 TREE_READONLY (olddecl) = 1;
1682 if (TREE_THIS_VOLATILE (newdecl))
1683 TREE_THIS_VOLATILE (olddecl) = 1;
1685 /* Merge the initialization information. */
1686 if (DECL_INITIAL (newdecl) == NULL_TREE
1687 && DECL_INITIAL (olddecl) != NULL_TREE)
1689 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
1690 DECL_SOURCE_LOCATION (newdecl) = DECL_SOURCE_LOCATION (olddecl);
1691 if (CAN_HAVE_FULL_LANG_DECL_P (newdecl)
1692 && DECL_LANG_SPECIFIC (newdecl)
1693 && DECL_LANG_SPECIFIC (olddecl))
1695 DECL_SAVED_TREE (newdecl) = DECL_SAVED_TREE (olddecl);
1696 DECL_STRUCT_FUNCTION (newdecl) = DECL_STRUCT_FUNCTION (olddecl);
1700 /* Merge the section attribute.
1701 We want to issue an error if the sections conflict but that must be
1702 done later in decl_attributes since we are called before attributes
1704 if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
1705 DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
1707 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1709 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (newdecl)
1710 |= DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (olddecl);
1711 DECL_NO_LIMIT_STACK (newdecl) |= DECL_NO_LIMIT_STACK (olddecl);
1712 TREE_THIS_VOLATILE (newdecl) |= TREE_THIS_VOLATILE (olddecl);
1713 TREE_READONLY (newdecl) |= TREE_READONLY (olddecl);
1714 TREE_NOTHROW (newdecl) |= TREE_NOTHROW (olddecl);
1715 DECL_IS_MALLOC (newdecl) |= DECL_IS_MALLOC (olddecl);
1716 DECL_IS_PURE (newdecl) |= DECL_IS_PURE (olddecl);
1717 /* Keep the old RTL. */
1718 COPY_DECL_RTL (olddecl, newdecl);
1720 else if (TREE_CODE (newdecl) == VAR_DECL
1721 && (DECL_SIZE (olddecl) || !DECL_SIZE (newdecl)))
1723 /* Keep the old RTL. We cannot keep the old RTL if the old
1724 declaration was for an incomplete object and the new
1725 declaration is not since many attributes of the RTL will
1727 COPY_DECL_RTL (olddecl, newdecl);
1730 /* If cannot merge, then use the new type and qualifiers,
1731 and don't preserve the old rtl. */
1734 /* Clean out any memory we had of the old declaration. */
1735 tree oldstatic = value_member (olddecl, static_aggregates);
1737 TREE_VALUE (oldstatic) = error_mark_node;
1739 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
1740 TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
1741 TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
1742 TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
1745 /* Merge the storage class information. */
1746 merge_weak (newdecl, olddecl);
1748 DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl);
1749 DECL_DEFER_OUTPUT (newdecl) |= DECL_DEFER_OUTPUT (olddecl);
1750 TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
1751 TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
1752 if (! DECL_EXTERNAL (olddecl))
1753 DECL_EXTERNAL (newdecl) = 0;
1755 if (DECL_LANG_SPECIFIC (newdecl) && DECL_LANG_SPECIFIC (olddecl))
1757 DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
1758 DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
1759 DECL_COMDAT (newdecl) |= DECL_COMDAT (olddecl);
1760 DECL_TEMPLATE_INSTANTIATED (newdecl)
1761 |= DECL_TEMPLATE_INSTANTIATED (olddecl);
1762 /* Don't really know how much of the language-specific
1763 values we should copy from old to new. */
1764 DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
1765 DECL_LANG_SPECIFIC (newdecl)->decl_flags.u2 =
1766 DECL_LANG_SPECIFIC (olddecl)->decl_flags.u2;
1767 DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
1768 DECL_REPO_AVAILABLE_P (newdecl) = DECL_REPO_AVAILABLE_P (olddecl);
1769 DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
1770 DECL_INITIALIZED_IN_CLASS_P (newdecl)
1771 |= DECL_INITIALIZED_IN_CLASS_P (olddecl);
1772 olddecl_friend = DECL_FRIEND_P (olddecl);
1774 /* Only functions have DECL_BEFRIENDING_CLASSES. */
1775 if (TREE_CODE (newdecl) == FUNCTION_DECL
1776 || DECL_FUNCTION_TEMPLATE_P (newdecl))
1778 DECL_BEFRIENDING_CLASSES (newdecl)
1779 = chainon (DECL_BEFRIENDING_CLASSES (newdecl),
1780 DECL_BEFRIENDING_CLASSES (olddecl));
1781 /* DECL_THUNKS is only valid for virtual functions,
1782 otherwise it is a DECL_FRIEND_CONTEXT. */
1783 if (DECL_VIRTUAL_P (newdecl))
1784 DECL_THUNKS (newdecl) = DECL_THUNKS (olddecl);
1788 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1790 if (DECL_TEMPLATE_INSTANTIATION (olddecl)
1791 && !DECL_TEMPLATE_INSTANTIATION (newdecl))
1793 /* If newdecl is not a specialization, then it is not a
1794 template-related function at all. And that means that we
1795 should have exited above, returning 0. */
1796 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl),
1799 if (TREE_USED (olddecl))
1800 /* From [temp.expl.spec]:
1802 If a template, a member template or the member of a class
1803 template is explicitly specialized then that
1804 specialization shall be declared before the first use of
1805 that specialization that would cause an implicit
1806 instantiation to take place, in every translation unit in
1807 which such a use occurs. */
1808 error ("explicit specialization of %D after first use",
1811 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl);
1813 /* [temp.expl.spec/14] We don't inline explicit specialization
1814 just because the primary template says so. */
1818 if (DECL_PENDING_INLINE_INFO (newdecl) == 0)
1819 DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
1821 DECL_DECLARED_INLINE_P (newdecl) |= DECL_DECLARED_INLINE_P (olddecl);
1823 /* If either decl says `inline', this fn is inline, unless
1824 its definition was passed already. */
1825 if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE)
1826 DECL_INLINE (olddecl) = 1;
1827 DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
1829 DECL_UNINLINABLE (newdecl) = DECL_UNINLINABLE (olddecl)
1830 = (DECL_UNINLINABLE (newdecl) || DECL_UNINLINABLE (olddecl));
1833 /* Preserve abstractness on cloned [cd]tors. */
1834 DECL_ABSTRACT (newdecl) = DECL_ABSTRACT (olddecl);
1838 SET_DECL_LANGUAGE (olddecl, DECL_LANGUAGE (newdecl));
1839 COPY_DECL_ASSEMBLER_NAME (newdecl, olddecl);
1840 COPY_DECL_RTL (newdecl, olddecl);
1842 if (! types_match || new_defines_function)
1844 /* These need to be copied so that the names are available.
1845 Note that if the types do match, we'll preserve inline
1846 info and other bits, but if not, we won't. */
1847 DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
1848 DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
1850 if (new_defines_function)
1851 /* If defining a function declared with other language
1852 linkage, use the previously declared language linkage. */
1853 SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl));
1854 else if (types_match)
1856 /* If redeclaring a builtin function, and not a definition,
1857 it stays built in. */
1858 if (DECL_BUILT_IN (olddecl))
1860 DECL_BUILT_IN_CLASS (newdecl) = DECL_BUILT_IN_CLASS (olddecl);
1861 DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
1862 /* If we're keeping the built-in definition, keep the rtl,
1863 regardless of declaration matches. */
1864 COPY_DECL_RTL (olddecl, newdecl);
1867 DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
1868 /* Don't clear out the arguments if we're redefining a function. */
1869 if (DECL_ARGUMENTS (olddecl))
1870 DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
1873 else if (TREE_CODE (newdecl) == NAMESPACE_DECL)
1874 NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
1876 /* Now preserve various other info from the definition. */
1877 TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
1878 TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
1879 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
1880 COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl);
1882 /* Warn about conflicting visibility specifications. */
1883 if (DECL_VISIBILITY_SPECIFIED (olddecl)
1884 && DECL_VISIBILITY_SPECIFIED (newdecl)
1885 && DECL_VISIBILITY (newdecl) != DECL_VISIBILITY (olddecl))
1887 warning ("%J'%D': visibility attribute ignored because it",
1889 warning ("%Jconflicts with previous declaration here", olddecl);
1891 /* Choose the declaration which specified visibility. */
1892 if (DECL_VISIBILITY_SPECIFIED (olddecl))
1894 DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
1895 DECL_VISIBILITY_SPECIFIED (newdecl) = 1;
1898 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1902 function_size = sizeof (struct tree_decl);
1904 memcpy ((char *) olddecl + sizeof (struct tree_common),
1905 (char *) newdecl + sizeof (struct tree_common),
1906 function_size - sizeof (struct tree_common));
1908 if (DECL_TEMPLATE_INSTANTIATION (newdecl))
1909 /* If newdecl is a template instantiation, it is possible that
1910 the following sequence of events has occurred:
1912 o A friend function was declared in a class template. The
1913 class template was instantiated.
1915 o The instantiation of the friend declaration was
1916 recorded on the instantiation list, and is newdecl.
1918 o Later, however, instantiate_class_template called pushdecl
1919 on the newdecl to perform name injection. But, pushdecl in
1920 turn called duplicate_decls when it discovered that another
1921 declaration of a global function with the same name already
1924 o Here, in duplicate_decls, we decided to clobber newdecl.
1926 If we're going to do that, we'd better make sure that
1927 olddecl, and not newdecl, is on the list of
1928 instantiations so that if we try to do the instantiation
1929 again we won't get the clobbered declaration. */
1930 reregister_specialization (newdecl,
1931 DECL_TI_TEMPLATE (newdecl),
1936 memcpy ((char *) olddecl + sizeof (struct tree_common),
1937 (char *) newdecl + sizeof (struct tree_common),
1938 sizeof (struct tree_decl) - sizeof (struct tree_common)
1939 + TREE_CODE_LENGTH (TREE_CODE (newdecl)) * sizeof (char *));
1942 DECL_UID (olddecl) = olddecl_uid;
1944 DECL_FRIEND_P (olddecl) = 1;
1946 /* NEWDECL contains the merged attribute lists.
1947 Update OLDDECL to be the same. */
1948 DECL_ATTRIBUTES (olddecl) = DECL_ATTRIBUTES (newdecl);
1950 /* If OLDDECL had its DECL_RTL instantiated, re-invoke make_decl_rtl
1951 so that encode_section_info has a chance to look at the new decl
1952 flags and attributes. */
1953 if (DECL_RTL_SET_P (olddecl)
1954 && (TREE_CODE (olddecl) == FUNCTION_DECL
1955 || (TREE_CODE (olddecl) == VAR_DECL
1956 && TREE_STATIC (olddecl))))
1957 make_decl_rtl (olddecl, NULL);
1962 /* Return zero if the declaration NEWDECL is valid
1963 when the declaration OLDDECL (assumed to be for the same name)
1964 has already been seen.
1965 Otherwise return an error message format string with a %s
1966 where the identifier should go. */
1969 redeclaration_error_message (tree newdecl, tree olddecl)
1971 if (TREE_CODE (newdecl) == TYPE_DECL)
1973 /* Because C++ can put things into name space for free,
1974 constructs like "typedef struct foo { ... } foo"
1975 would look like an erroneous redeclaration. */
1976 if (same_type_p (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
1979 return "redefinition of `%#D'";
1981 else if (TREE_CODE (newdecl) == FUNCTION_DECL)
1983 /* If this is a pure function, its olddecl will actually be
1984 the original initialization to `0' (which we force to call
1985 abort()). Don't complain about redefinition in this case. */
1986 if (DECL_LANG_SPECIFIC (olddecl) && DECL_PURE_VIRTUAL_P (olddecl))
1989 /* If both functions come from different namespaces, this is not
1990 a redeclaration - this is a conflict with a used function. */
1991 if (DECL_NAMESPACE_SCOPE_P (olddecl)
1992 && DECL_CONTEXT (olddecl) != DECL_CONTEXT (newdecl))
1993 return "`%D' conflicts with used function";
1995 /* We'll complain about linkage mismatches in
1996 warn_extern_redeclared_static. */
1998 /* Defining the same name twice is no good. */
1999 if (DECL_INITIAL (olddecl) != NULL_TREE
2000 && DECL_INITIAL (newdecl) != NULL_TREE)
2002 if (DECL_NAME (olddecl) == NULL_TREE)
2003 return "`%#D' not declared in class";
2005 return "redefinition of `%#D'";
2009 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2013 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2015 if (COMPLETE_TYPE_P (TREE_TYPE (newdecl))
2016 && COMPLETE_TYPE_P (TREE_TYPE (olddecl)))
2017 return "redefinition of `%#D'";
2021 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) != FUNCTION_DECL
2022 || (DECL_TEMPLATE_RESULT (newdecl)
2023 == DECL_TEMPLATE_RESULT (olddecl)))
2026 nt = DECL_TEMPLATE_RESULT (newdecl);
2027 if (DECL_TEMPLATE_INFO (nt))
2028 nt = DECL_TEMPLATE_RESULT (template_for_substitution (nt));
2029 ot = DECL_TEMPLATE_RESULT (olddecl);
2030 if (DECL_TEMPLATE_INFO (ot))
2031 ot = DECL_TEMPLATE_RESULT (template_for_substitution (ot));
2032 if (DECL_INITIAL (nt) && DECL_INITIAL (ot))
2033 return "redefinition of `%#D'";
2037 else if (toplevel_bindings_p () || DECL_NAMESPACE_SCOPE_P (newdecl))
2039 /* Objects declared at top level: */
2040 /* If at least one is a reference, it's ok. */
2041 if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
2043 /* Reject two definitions. */
2044 return "redefinition of `%#D'";
2048 /* Objects declared with block scope: */
2049 /* Reject two definitions, and reject a definition
2050 together with an external reference. */
2051 if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
2052 return "redeclaration of `%#D'";
2057 /* Create a new label, named ID. */
2060 make_label_decl (tree id, int local_p)
2064 decl = build_decl (LABEL_DECL, id, void_type_node);
2066 DECL_CONTEXT (decl) = current_function_decl;
2067 DECL_MODE (decl) = VOIDmode;
2068 C_DECLARED_LABEL_FLAG (decl) = local_p;
2070 /* Say where one reference is to the label, for the sake of the
2071 error if it is not defined. */
2072 DECL_SOURCE_LOCATION (decl) = input_location;
2074 /* Record the fact that this identifier is bound to this label. */
2075 SET_IDENTIFIER_LABEL_VALUE (id, decl);
2080 /* Record this label on the list of used labels so that we can check
2081 at the end of the function to see whether or not the label was
2082 actually defined, and so we can check when the label is defined whether
2083 this use is valid. */
2086 use_label (tree decl)
2088 if (named_label_uses == NULL
2089 || named_label_uses->names_in_scope != current_binding_level->names
2090 || named_label_uses->label_decl != decl)
2092 struct named_label_use_list *new_ent;
2093 new_ent = GGC_NEW (struct named_label_use_list);
2094 new_ent->label_decl = decl;
2095 new_ent->names_in_scope = current_binding_level->names;
2096 new_ent->binding_level = current_binding_level;
2097 new_ent->o_goto_locus = input_location;
2098 new_ent->next = named_label_uses;
2099 named_label_uses = new_ent;
2103 /* Look for a label named ID in the current function. If one cannot
2104 be found, create one. (We keep track of used, but undefined,
2105 labels, and complain about them at the end of a function.) */
2108 lookup_label (tree id)
2111 struct named_label_list *ent;
2113 timevar_push (TV_NAME_LOOKUP);
2114 /* You can't use labels at global scope. */
2115 if (current_function_decl == NULL_TREE)
2117 error ("label `%E' referenced outside of any function", id);
2118 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
2121 /* See if we've already got this label. */
2122 decl = IDENTIFIER_LABEL_VALUE (id);
2123 if (decl != NULL_TREE && DECL_CONTEXT (decl) == current_function_decl)
2124 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
2126 /* Record this label on the list of labels used in this function.
2127 We do this before calling make_label_decl so that we get the
2128 IDENTIFIER_LABEL_VALUE before the new label is declared. */
2129 ent = GGC_CNEW (struct named_label_list);
2130 ent->old_value = IDENTIFIER_LABEL_VALUE (id);
2131 ent->next = named_labels;
2134 /* We need a new label. */
2135 decl = make_label_decl (id, /*local_p=*/0);
2137 /* Now fill in the information we didn't have before. */
2138 ent->label_decl = decl;
2140 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
2143 /* Declare a local label named ID. */
2146 declare_local_label (tree id)
2150 /* Add a new entry to the SHADOWED_LABELS list so that when we leave
2151 this scope we can restore the old value of
2152 IDENTIFIER_TYPE_VALUE. */
2153 current_binding_level->shadowed_labels
2154 = tree_cons (IDENTIFIER_LABEL_VALUE (id), NULL_TREE,
2155 current_binding_level->shadowed_labels);
2156 /* Look for the label. */
2157 decl = make_label_decl (id, /*local_p=*/1);
2158 /* Now fill in the information we didn't have before. */
2159 TREE_VALUE (current_binding_level->shadowed_labels) = decl;
2164 /* Returns nonzero if it is ill-formed to jump past the declaration of
2165 DECL. Returns 2 if it's also a real problem. */
2168 decl_jump_unsafe (tree decl)
2170 if (TREE_CODE (decl) != VAR_DECL || TREE_STATIC (decl))
2173 if (DECL_INITIAL (decl) == NULL_TREE
2174 && pod_type_p (TREE_TYPE (decl)))
2177 /* This is really only important if we're crossing an initialization.
2178 The POD stuff is just pedantry; why should it matter if the class
2179 contains a field of pointer to member type? */
2180 if (DECL_INITIAL (decl)
2181 || (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))))
2186 /* Check that a single previously seen jump to a newly defined label
2187 is OK. DECL is the LABEL_DECL or 0; LEVEL is the binding_level for
2188 the jump context; NAMES are the names in scope in LEVEL at the jump
2189 context; FILE and LINE are the source position of the jump or 0. */
2192 check_previous_goto_1 (tree decl,
2193 struct cp_binding_level* level,
2194 tree names, const location_t *locus)
2198 struct cp_binding_level *b = current_binding_level;
2199 for (; b; b = b->level_chain)
2201 tree new_decls = b->names;
2202 tree old_decls = (b == level ? names : NULL_TREE);
2203 for (; new_decls != old_decls;
2204 new_decls = TREE_CHAIN (new_decls))
2206 int problem = decl_jump_unsafe (new_decls);
2213 pedwarn ("jump to label `%D'", decl);
2215 pedwarn ("jump to case label");
2218 pedwarn ("%H from here", locus);
2223 cp_error_at (" crosses initialization of `%#D'",
2226 cp_pedwarn_at (" enters scope of non-POD `%#D'",
2232 if ((b->kind == sk_try || b->kind == sk_catch) && ! saw_eh)
2237 pedwarn ("jump to label `%D'", decl);
2239 pedwarn ("jump to case label");
2242 pedwarn ("%H from here", locus);
2245 if (b->kind == sk_try)
2246 error (" enters try block");
2248 error (" enters catch block");
2255 check_previous_goto (struct named_label_use_list* use)
2257 check_previous_goto_1 (use->label_decl, use->binding_level,
2258 use->names_in_scope, &use->o_goto_locus);
2262 check_switch_goto (struct cp_binding_level* level)
2264 check_previous_goto_1 (NULL_TREE, level, level->names, NULL);
2267 /* Check that any previously seen jumps to a newly defined label DECL
2268 are OK. Called by define_label. */
2271 check_previous_gotos (tree decl)
2273 struct named_label_use_list **usep;
2275 if (! TREE_USED (decl))
2278 for (usep = &named_label_uses; *usep; )
2280 struct named_label_use_list *use = *usep;
2281 if (use->label_decl == decl)
2283 check_previous_goto (use);
2287 usep = &(use->next);
2291 /* Check that a new jump to a label DECL is OK. Called by
2292 finish_goto_stmt. */
2295 check_goto (tree decl)
2299 struct named_label_list *lab;
2301 /* We can't know where a computed goto is jumping. So we assume
2303 if (! DECL_P (decl))
2306 /* If the label hasn't been defined yet, defer checking. */
2307 if (! DECL_INITIAL (decl))
2313 for (lab = named_labels; lab; lab = lab->next)
2314 if (decl == lab->label_decl)
2317 /* If the label is not on named_labels it's a gcc local label, so
2318 it must be in an outer scope, so jumping to it is always OK. */
2322 if ((lab->in_try_scope || lab->in_catch_scope || lab->bad_decls)
2325 cp_pedwarn_at ("jump to label `%D'", decl);
2326 pedwarn (" from here");
2330 for (bad = lab->bad_decls; bad; bad = TREE_CHAIN (bad))
2332 tree b = TREE_VALUE (bad);
2333 int u = decl_jump_unsafe (b);
2335 if (u > 1 && DECL_ARTIFICIAL (b))
2336 /* Can't skip init of __exception_info. */
2337 error ("%J enters catch block", b);
2339 cp_error_at (" skips initialization of `%#D'", b);
2341 cp_pedwarn_at (" enters scope of non-POD `%#D'", b);
2344 if (lab->in_try_scope)
2345 error (" enters try block");
2346 else if (lab->in_catch_scope)
2347 error (" enters catch block");
2350 /* Define a label, specifying the location in the source file.
2351 Return the LABEL_DECL node for the label. */
2354 define_label (location_t location, tree name)
2356 tree decl = lookup_label (name);
2357 struct named_label_list *ent;
2358 struct cp_binding_level *p;
2360 timevar_push (TV_NAME_LOOKUP);
2361 for (ent = named_labels; ent; ent = ent->next)
2362 if (ent->label_decl == decl)
2365 /* After labels, make any new cleanups in the function go into their
2366 own new (temporary) binding contour. */
2367 for (p = current_binding_level;
2368 p->kind != sk_function_parms;
2370 p->more_cleanups_ok = 0;
2372 if (name == get_identifier ("wchar_t"))
2373 pedwarn ("label named wchar_t");
2375 if (DECL_INITIAL (decl) != NULL_TREE)
2376 error ("duplicate label `%D'", decl);
2379 /* Mark label as having been defined. */
2380 DECL_INITIAL (decl) = error_mark_node;
2381 /* Say where in the source. */
2382 DECL_SOURCE_LOCATION (decl) = location;
2385 ent->names_in_scope = current_binding_level->names;
2386 ent->binding_level = current_binding_level;
2388 check_previous_gotos (decl);
2391 timevar_pop (TV_NAME_LOOKUP);
2397 struct cp_binding_level *level;
2398 struct cp_switch *next;
2399 /* The SWITCH_STMT being built. */
2401 /* A splay-tree mapping the low element of a case range to the high
2402 element, or NULL_TREE if there is no high element. Used to
2403 determine whether or not a new case label duplicates an old case
2404 label. We need a tree, rather than simply a hash table, because
2405 of the GNU case range extension. */
2409 /* A stack of the currently active switch statements. The innermost
2410 switch statement is on the top of the stack. There is no need to
2411 mark the stack for garbage collection because it is only active
2412 during the processing of the body of a function, and we never
2413 collect at that point. */
2415 static struct cp_switch *switch_stack;
2417 /* Called right after a switch-statement condition is parsed.
2418 SWITCH_STMT is the switch statement being parsed. */
2421 push_switch (tree switch_stmt)
2423 struct cp_switch *p = xmalloc (sizeof (struct cp_switch));
2424 p->level = current_binding_level;
2425 p->next = switch_stack;
2426 p->switch_stmt = switch_stmt;
2427 p->cases = splay_tree_new (case_compare, NULL, NULL);
2434 struct cp_switch *cs = switch_stack;
2436 /* Emit warnings as needed. */
2437 c_do_switch_warnings (cs->cases, cs->switch_stmt);
2439 splay_tree_delete (cs->cases);
2440 switch_stack = switch_stack->next;
2444 /* Note that we've seen a definition of a case label, and complain if this
2445 is a bad place for one. */
2448 finish_case_label (tree low_value, tree high_value)
2451 struct cp_binding_level *p;
2453 if (processing_template_decl)
2457 /* For templates, just add the case label; we'll do semantic
2458 analysis at instantiation-time. */
2459 label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
2460 return add_stmt (build_case_label (low_value, high_value, label));
2463 /* Find the condition on which this switch statement depends. */
2464 cond = SWITCH_COND (switch_stack->switch_stmt);
2465 if (cond && TREE_CODE (cond) == TREE_LIST)
2466 cond = TREE_VALUE (cond);
2468 r = c_add_case_label (switch_stack->cases, cond, TREE_TYPE (cond),
2469 low_value, high_value);
2471 check_switch_goto (switch_stack->level);
2473 /* After labels, make any new cleanups in the function go into their
2474 own new (temporary) binding contour. */
2475 for (p = current_binding_level;
2476 p->kind != sk_function_parms;
2478 p->more_cleanups_ok = 0;
2483 /* Hash a TYPENAME_TYPE. K is really of type `tree'. */
2486 typename_hash (const void* k)
2491 hash = (htab_hash_pointer (TYPE_CONTEXT (t))
2492 ^ htab_hash_pointer (DECL_NAME (TYPE_NAME (t))));
2497 /* Compare two TYPENAME_TYPEs. K1 and K2 are really of type `tree'. */
2500 typename_compare (const void * k1, const void * k2)
2509 d1 = TYPE_NAME (t1);
2510 d2 = TYPE_NAME (t2);
2512 return (DECL_NAME (d1) == DECL_NAME (d2)
2513 && TYPE_CONTEXT (t1) == TYPE_CONTEXT (t2)
2514 && ((TREE_TYPE (t1) != NULL_TREE)
2515 == (TREE_TYPE (t2) != NULL_TREE))
2516 && same_type_p (TREE_TYPE (t1), TREE_TYPE (t2))
2517 && TYPENAME_TYPE_FULLNAME (t1) == TYPENAME_TYPE_FULLNAME (t2));
2520 /* Build a TYPENAME_TYPE. If the type is `typename T::t', CONTEXT is
2521 the type of `T', NAME is the IDENTIFIER_NODE for `t'. If BASE_TYPE
2522 is non-NULL, this type is being created by the implicit typename
2523 extension, and BASE_TYPE is a type named `t' in some base class of
2524 `T' which depends on template parameters.
2526 Returns the new TYPENAME_TYPE. */
2528 static GTY ((param_is (union tree_node))) htab_t typename_htab;
2531 build_typename_type (tree context, tree name, tree fullname)
2537 if (typename_htab == NULL)
2539 typename_htab = htab_create_ggc (61, &typename_hash,
2540 &typename_compare, NULL);
2543 /* Build the TYPENAME_TYPE. */
2544 t = make_aggr_type (TYPENAME_TYPE);
2545 TYPE_CONTEXT (t) = FROB_CONTEXT (context);
2546 TYPENAME_TYPE_FULLNAME (t) = fullname;
2548 /* Build the corresponding TYPE_DECL. */
2549 d = build_decl (TYPE_DECL, name, t);
2550 TYPE_NAME (TREE_TYPE (d)) = d;
2551 TYPE_STUB_DECL (TREE_TYPE (d)) = d;
2552 DECL_CONTEXT (d) = FROB_CONTEXT (context);
2553 DECL_ARTIFICIAL (d) = 1;
2555 /* See if we already have this type. */
2556 e = htab_find_slot (typename_htab, t, INSERT);
2565 /* Resolve `typename CONTEXT::NAME'. Returns an appropriate type,
2566 unless an error occurs, in which case error_mark_node is returned.
2567 If we locate a non-artificial TYPE_DECL and TF_KEEP_TYPE_DECL is
2568 set, we return that, rather than the _TYPE it corresponds to, in
2569 other cases we look through the type decl. If TF_ERROR is set,
2570 complain about errors, otherwise be quiet. */
2573 make_typename_type (tree context, tree name, tsubst_flags_t complain)
2577 if (name == error_mark_node
2578 || context == NULL_TREE
2579 || context == error_mark_node)
2580 return error_mark_node;
2584 if (!(TYPE_LANG_SPECIFIC (name)
2585 && (CLASSTYPE_IS_TEMPLATE (name)
2586 || CLASSTYPE_USE_TEMPLATE (name))))
2587 name = TYPE_IDENTIFIER (name);
2589 /* Create a TEMPLATE_ID_EXPR for the type. */
2590 name = build_nt (TEMPLATE_ID_EXPR,
2591 CLASSTYPE_TI_TEMPLATE (name),
2592 CLASSTYPE_TI_ARGS (name));
2594 else if (TREE_CODE (name) == TYPE_DECL)
2595 name = DECL_NAME (name);
2599 if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
2601 name = TREE_OPERAND (name, 0);
2602 if (TREE_CODE (name) == TEMPLATE_DECL)
2603 name = TREE_OPERAND (fullname, 0) = DECL_NAME (name);
2605 if (TREE_CODE (name) == TEMPLATE_DECL)
2607 error ("`%D' used without template parameters", name);
2608 return error_mark_node;
2610 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 20030802);
2612 if (TREE_CODE (context) == NAMESPACE_DECL)
2614 /* We can get here from typename_sub0 in the explicit_template_type
2615 expansion. Just fail. */
2616 if (complain & tf_error)
2617 error ("no class template named `%#T' in `%#T'",
2619 return error_mark_node;
2622 if (!dependent_type_p (context)
2623 || currently_open_class (context))
2625 if (TREE_CODE (fullname) == TEMPLATE_ID_EXPR)
2627 tree tmpl = NULL_TREE;
2628 if (IS_AGGR_TYPE (context))
2629 tmpl = lookup_field (context, name, 0, false);
2630 if (!tmpl || !DECL_CLASS_TEMPLATE_P (tmpl))
2632 if (complain & tf_error)
2633 error ("no class template named `%#T' in `%#T'",
2635 return error_mark_node;
2638 if (complain & tf_error)
2639 perform_or_defer_access_check (TYPE_BINFO (context), tmpl);
2641 return lookup_template_class (tmpl,
2642 TREE_OPERAND (fullname, 1),
2644 /*entering_scope=*/0,
2645 tf_error | tf_warning | tf_user);
2651 if (!IS_AGGR_TYPE (context))
2653 if (complain & tf_error)
2654 error ("no type named `%#T' in `%#T'", name, context);
2655 return error_mark_node;
2658 t = lookup_field (context, name, 0, true);
2661 if (TREE_CODE (t) != TYPE_DECL)
2663 if (complain & tf_error)
2664 error ("no type named `%#T' in `%#T'", name, context);
2665 return error_mark_node;
2668 if (complain & tf_error)
2669 perform_or_defer_access_check (TYPE_BINFO (context), t);
2671 if (DECL_ARTIFICIAL (t) || !(complain & tf_keep_type_decl))
2679 /* If the CONTEXT is not a template type, then either the field is
2680 there now or its never going to be. */
2681 if (!dependent_type_p (context))
2683 if (complain & tf_error)
2684 error ("no type named `%#T' in `%#T'", name, context);
2685 return error_mark_node;
2688 return build_typename_type (context, name, fullname);
2691 /* Resolve `CONTEXT::template NAME'. Returns an appropriate type,
2692 unless an error occurs, in which case error_mark_node is returned.
2693 If we locate a TYPE_DECL, we return that, rather than the _TYPE it
2694 corresponds to. If COMPLAIN zero, don't complain about any errors
2698 make_unbound_class_template (tree context, tree name, tsubst_flags_t complain)
2704 name = TYPE_IDENTIFIER (name);
2705 else if (DECL_P (name))
2706 name = DECL_NAME (name);
2707 if (TREE_CODE (name) != IDENTIFIER_NODE)
2710 if (!dependent_type_p (context)
2711 || currently_open_class (context))
2713 tree tmpl = NULL_TREE;
2715 if (IS_AGGR_TYPE (context))
2716 tmpl = lookup_field (context, name, 0, false);
2718 if (!tmpl || !DECL_CLASS_TEMPLATE_P (tmpl))
2720 if (complain & tf_error)
2721 error ("no class template named `%#T' in `%#T'", name, context);
2722 return error_mark_node;
2725 if (complain & tf_error)
2726 perform_or_defer_access_check (TYPE_BINFO (context), tmpl);
2731 /* Build the UNBOUND_CLASS_TEMPLATE. */
2732 t = make_aggr_type (UNBOUND_CLASS_TEMPLATE);
2733 TYPE_CONTEXT (t) = FROB_CONTEXT (context);
2734 TREE_TYPE (t) = NULL_TREE;
2736 /* Build the corresponding TEMPLATE_DECL. */
2737 d = build_decl (TEMPLATE_DECL, name, t);
2738 TYPE_NAME (TREE_TYPE (d)) = d;
2739 TYPE_STUB_DECL (TREE_TYPE (d)) = d;
2740 DECL_CONTEXT (d) = FROB_CONTEXT (context);
2741 DECL_ARTIFICIAL (d) = 1;
2748 /* Push the declarations of builtin types into the namespace.
2749 RID_INDEX is the index of the builtin type in the array
2750 RID_POINTERS. NAME is the name used when looking up the builtin
2751 type. TYPE is the _TYPE node for the builtin type. */
2754 record_builtin_type (enum rid rid_index,
2758 tree rname = NULL_TREE, tname = NULL_TREE;
2759 tree tdecl = NULL_TREE;
2761 if ((int) rid_index < (int) RID_MAX)
2762 rname = ridpointers[(int) rid_index];
2764 tname = get_identifier (name);
2766 /* The calls to SET_IDENTIFIER_GLOBAL_VALUE below should be
2767 eliminated. Built-in types should not be looked up name; their
2768 names are keywords that the parser can recognize. However, there
2769 is code in c-common.c that uses identifier_global_value to look
2770 up built-in types by name. */
2773 tdecl = build_decl (TYPE_DECL, tname, type);
2774 DECL_ARTIFICIAL (tdecl) = 1;
2775 SET_IDENTIFIER_GLOBAL_VALUE (tname, tdecl);
2781 tdecl = build_decl (TYPE_DECL, rname, type);
2782 DECL_ARTIFICIAL (tdecl) = 1;
2784 SET_IDENTIFIER_GLOBAL_VALUE (rname, tdecl);
2787 if (!TYPE_NAME (type))
2788 TYPE_NAME (type) = tdecl;
2791 debug_hooks->type_decl (tdecl, 0);
2794 /* Record one of the standard Java types.
2795 * Declare it as having the given NAME.
2796 * If SIZE > 0, it is the size of one of the integral types;
2797 * otherwise it is the negative of the size of one of the other types. */
2800 record_builtin_java_type (const char* name, int size)
2804 type = make_signed_type (size);
2805 else if (size > -32)
2806 { /* "__java_char" or ""__java_boolean". */
2807 type = make_unsigned_type (-size);
2808 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
2811 { /* "__java_float" or ""__java_double". */
2812 type = make_node (REAL_TYPE);
2813 TYPE_PRECISION (type) = - size;
2816 record_builtin_type (RID_MAX, name, type);
2817 decl = TYPE_NAME (type);
2819 /* Suppress generate debug symbol entries for these types,
2820 since for normal C++ they are just clutter.
2821 However, push_lang_context undoes this if extern "Java" is seen. */
2822 DECL_IGNORED_P (decl) = 1;
2824 TYPE_FOR_JAVA (type) = 1;
2828 /* Push a type into the namespace so that the back-ends ignore it. */
2831 record_unknown_type (tree type, const char* name)
2833 tree decl = pushdecl (build_decl (TYPE_DECL, get_identifier (name), type));
2834 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
2835 DECL_IGNORED_P (decl) = 1;
2836 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
2837 TYPE_SIZE (type) = TYPE_SIZE (void_type_node);
2838 TYPE_ALIGN (type) = 1;
2839 TYPE_USER_ALIGN (type) = 0;
2840 TYPE_MODE (type) = TYPE_MODE (void_type_node);
2843 /* An string for which we should create an IDENTIFIER_NODE at
2846 typedef struct predefined_identifier
2848 /* The name of the identifier. */
2849 const char *const name;
2850 /* The place where the IDENTIFIER_NODE should be stored. */
2852 /* Nonzero if this is the name of a constructor or destructor. */
2853 const int ctor_or_dtor_p;
2854 } predefined_identifier;
2856 /* Create all the predefined identifiers. */
2859 initialize_predefined_identifiers (void)
2861 const predefined_identifier *pid;
2863 /* A table of identifiers to create at startup. */
2864 static const predefined_identifier predefined_identifiers[] = {
2865 { "C++", &lang_name_cplusplus, 0 },
2866 { "C", &lang_name_c, 0 },
2867 { "Java", &lang_name_java, 0 },
2868 { CTOR_NAME, &ctor_identifier, 1 },
2869 { "__base_ctor", &base_ctor_identifier, 1 },
2870 { "__comp_ctor", &complete_ctor_identifier, 1 },
2871 { DTOR_NAME, &dtor_identifier, 1 },
2872 { "__comp_dtor", &complete_dtor_identifier, 1 },
2873 { "__base_dtor", &base_dtor_identifier, 1 },
2874 { "__deleting_dtor", &deleting_dtor_identifier, 1 },
2875 { IN_CHARGE_NAME, &in_charge_identifier, 0 },
2876 { "nelts", &nelts_identifier, 0 },
2877 { THIS_NAME, &this_identifier, 0 },
2878 { VTABLE_DELTA_NAME, &delta_identifier, 0 },
2879 { VTABLE_PFN_NAME, &pfn_identifier, 0 },
2880 { "_vptr", &vptr_identifier, 0 },
2881 { "__vtt_parm", &vtt_parm_identifier, 0 },
2882 { "::", &global_scope_name, 0 },
2883 { "std", &std_identifier, 0 },
2887 for (pid = predefined_identifiers; pid->name; ++pid)
2889 *pid->node = get_identifier (pid->name);
2890 if (pid->ctor_or_dtor_p)
2891 IDENTIFIER_CTOR_OR_DTOR_P (*pid->node) = 1;
2895 /* Create the predefined scalar types of C,
2896 and some nodes representing standard constants (0, 1, (void *)0).
2897 Initialize the global binding level.
2898 Make definitions for built-in primitive functions. */
2901 cxx_init_decl_processing (void)
2904 tree void_ftype_ptr;
2906 build_common_tree_nodes (flag_signed_char);
2908 /* Create all the identifiers we need. */
2909 initialize_predefined_identifiers ();
2911 /* Create the global variables. */
2912 push_to_top_level ();
2914 current_function_decl = NULL_TREE;
2915 current_binding_level = NULL;
2916 /* Enter the global namespace. */
2917 my_friendly_assert (global_namespace == NULL_TREE, 375);
2918 global_namespace = build_lang_decl (NAMESPACE_DECL, global_scope_name,
2920 begin_scope (sk_namespace, global_namespace);
2922 current_lang_name = NULL_TREE;
2924 /* Adjust various flags based on command-line settings. */
2925 if (!flag_permissive)
2926 flag_pedantic_errors = 1;
2927 if (!flag_no_inline)
2929 flag_inline_trees = 1;
2932 if (flag_inline_functions)
2934 flag_inline_trees = 2;
2935 flag_inline_functions = 0;
2938 /* Force minimum function alignment if using the least significant
2939 bit of function pointers to store the virtual bit. */
2940 if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
2941 && force_align_functions_log < 1)
2942 force_align_functions_log = 1;
2945 current_lang_name = lang_name_c;
2947 error_mark_list = build_tree_list (error_mark_node, error_mark_node);
2948 TREE_TYPE (error_mark_list) = error_mark_node;
2950 /* Create the `std' namespace. */
2951 push_namespace (std_identifier);
2952 std_node = current_namespace;
2955 c_common_nodes_and_builtins ();
2957 java_byte_type_node = record_builtin_java_type ("__java_byte", 8);
2958 java_short_type_node = record_builtin_java_type ("__java_short", 16);
2959 java_int_type_node = record_builtin_java_type ("__java_int", 32);
2960 java_long_type_node = record_builtin_java_type ("__java_long", 64);
2961 java_float_type_node = record_builtin_java_type ("__java_float", -32);
2962 java_double_type_node = record_builtin_java_type ("__java_double", -64);
2963 java_char_type_node = record_builtin_java_type ("__java_char", -16);
2964 java_boolean_type_node = record_builtin_java_type ("__java_boolean", -1);
2966 integer_two_node = build_int_2 (2, 0);
2967 TREE_TYPE (integer_two_node) = integer_type_node;
2968 integer_three_node = build_int_2 (3, 0);
2969 TREE_TYPE (integer_three_node) = integer_type_node;
2971 record_builtin_type (RID_BOOL, "bool", boolean_type_node);
2972 truthvalue_type_node = boolean_type_node;
2973 truthvalue_false_node = boolean_false_node;
2974 truthvalue_true_node = boolean_true_node;
2976 empty_except_spec = build_tree_list (NULL_TREE, NULL_TREE);
2979 record_builtin_type (RID_MAX, NULL, string_type_node);
2982 delta_type_node = ptrdiff_type_node;
2983 vtable_index_type = ptrdiff_type_node;
2985 vtt_parm_type = build_pointer_type (const_ptr_type_node);
2986 void_ftype = build_function_type (void_type_node, void_list_node);
2987 void_ftype_ptr = build_function_type (void_type_node,
2988 tree_cons (NULL_TREE,
2992 = build_exception_variant (void_ftype_ptr, empty_except_spec);
2994 /* C++ extensions */
2996 unknown_type_node = make_node (UNKNOWN_TYPE);
2997 record_unknown_type (unknown_type_node, "unknown type");
2999 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
3000 TREE_TYPE (unknown_type_node) = unknown_type_node;
3002 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
3004 TYPE_POINTER_TO (unknown_type_node) = unknown_type_node;
3005 TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node;
3008 /* Make sure we get a unique function type, so we can give
3009 its pointer type a name. (This wins for gdb.) */
3010 tree vfunc_type = make_node (FUNCTION_TYPE);
3011 TREE_TYPE (vfunc_type) = integer_type_node;
3012 TYPE_ARG_TYPES (vfunc_type) = NULL_TREE;
3013 layout_type (vfunc_type);
3015 vtable_entry_type = build_pointer_type (vfunc_type);
3017 record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type);
3020 = build_cplus_array_type (vtable_entry_type, NULL_TREE);
3021 layout_type (vtbl_type_node);
3022 vtbl_type_node = build_qualified_type (vtbl_type_node, TYPE_QUAL_CONST);
3023 record_builtin_type (RID_MAX, NULL, vtbl_type_node);
3024 vtbl_ptr_type_node = build_pointer_type (vtable_entry_type);
3025 layout_type (vtbl_ptr_type_node);
3026 record_builtin_type (RID_MAX, NULL, vtbl_ptr_type_node);
3028 push_namespace (get_identifier ("__cxxabiv1"));
3029 abi_node = current_namespace;
3032 global_type_node = make_node (LANG_TYPE);
3033 record_unknown_type (global_type_node, "global type");
3036 current_lang_name = lang_name_cplusplus;
3040 tree bad_alloc_type_node;
3041 tree bad_alloc_decl;
3042 tree newtype, deltype;
3043 tree ptr_ftype_sizetype;
3045 push_namespace (std_identifier);
3046 bad_alloc_id = get_identifier ("bad_alloc");
3047 bad_alloc_type_node = make_aggr_type (RECORD_TYPE);
3048 TYPE_CONTEXT (bad_alloc_type_node) = current_namespace;
3050 = create_implicit_typedef (bad_alloc_id, bad_alloc_type_node);
3051 DECL_CONTEXT (bad_alloc_decl) = current_namespace;
3052 TYPE_STUB_DECL (bad_alloc_type_node) = bad_alloc_decl;
3056 = build_function_type (ptr_type_node,
3057 tree_cons (NULL_TREE,
3060 newtype = build_exception_variant
3061 (ptr_ftype_sizetype, add_exception_specifier
3062 (NULL_TREE, bad_alloc_type_node, -1));
3063 deltype = build_exception_variant (void_ftype_ptr, empty_except_spec);
3064 push_cp_library_fn (NEW_EXPR, newtype);
3065 push_cp_library_fn (VEC_NEW_EXPR, newtype);
3066 global_delete_fndecl = push_cp_library_fn (DELETE_EXPR, deltype);
3067 push_cp_library_fn (VEC_DELETE_EXPR, deltype);
3071 = build_library_fn_ptr ("__cxa_pure_virtual", void_ftype);
3073 /* Perform other language dependent initializations. */
3074 init_class_processing ();
3075 init_rtti_processing ();
3077 if (flag_exceptions)
3078 init_exception_processing ();
3080 if (! supports_one_only ())
3083 make_fname_decl = cp_make_fname_decl;
3084 start_fname_decls ();
3086 /* Show we use EH for cleanups. */
3087 if (flag_exceptions)
3088 using_eh_for_cleanups ();
3091 /* Generate an initializer for a function naming variable from
3092 NAME. NAME may be NULL, to indicate a dependent name. TYPE_P is
3093 filled in with the type of the init. */
3096 cp_fname_init (const char* name, tree *type_p)
3098 tree domain = NULL_TREE;
3100 tree init = NULL_TREE;
3105 length = strlen (name);
3106 domain = build_index_type (size_int (length));
3107 init = build_string (length + 1, name);
3110 type = build_qualified_type (char_type_node, TYPE_QUAL_CONST);
3111 type = build_cplus_array_type (type, domain);
3116 TREE_TYPE (init) = type;
3118 init = error_mark_node;
3123 /* Create the VAR_DECL for __FUNCTION__ etc. ID is the name to give the
3124 decl, NAME is the initialization string and TYPE_DEP indicates whether
3125 NAME depended on the type of the function. We make use of that to detect
3126 __PRETTY_FUNCTION__ inside a template fn. This is being done
3127 lazily at the point of first use, so we mustn't push the decl now. */
3130 cp_make_fname_decl (tree id, int type_dep)
3132 const char *const name = (type_dep && processing_template_decl
3133 ? NULL : fname_as_string (type_dep));
3135 tree init = cp_fname_init (name, &type);
3136 tree decl = build_decl (VAR_DECL, id, type);
3139 free ((char *) name);
3141 /* As we're using pushdecl_with_scope, we must set the context. */
3142 DECL_CONTEXT (decl) = current_function_decl;
3143 DECL_PRETTY_FUNCTION_P (decl) = type_dep;
3145 TREE_STATIC (decl) = 1;
3146 TREE_READONLY (decl) = 1;
3147 DECL_ARTIFICIAL (decl) = 1;
3148 DECL_INITIAL (decl) = init;
3150 TREE_USED (decl) = 1;
3152 if (current_function_decl)
3154 struct cp_binding_level *b = current_binding_level;
3155 while (b->level_chain->kind != sk_function_parms)
3157 pushdecl_with_scope (decl, b);
3158 cp_finish_decl (decl, init, NULL_TREE, LOOKUP_ONLYCONVERTING);
3161 pushdecl_top_level_and_finish (decl, init);
3166 /* Make a definition for a builtin function named NAME in the current
3167 namespace, whose data type is TYPE and whose context is CONTEXT.
3168 TYPE should be a function type with argument types.
3170 CLASS and CODE tell later passes how to compile calls to this function.
3171 See tree.h for possible values.
3173 If LIBNAME is nonzero, use that for DECL_ASSEMBLER_NAME,
3174 the name to be called if we can't opencode the function.
3175 If ATTRS is nonzero, use that for the function's attribute
3179 builtin_function_1 (const char* name,
3182 enum built_in_function code,
3183 enum built_in_class class,
3184 const char* libname,
3187 tree decl = build_library_fn_1 (get_identifier (name), ERROR_MARK, type);
3188 DECL_BUILT_IN_CLASS (decl) = class;
3189 DECL_FUNCTION_CODE (decl) = code;
3190 DECL_CONTEXT (decl) = context;
3194 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
3195 we cannot change DECL_ASSEMBLER_NAME until we have installed this
3196 function in the namespace. */
3198 SET_DECL_ASSEMBLER_NAME (decl, get_identifier (libname));
3200 /* Warn if a function in the namespace for users
3201 is used without an occasion to consider it declared. */
3202 if (name[0] != '_' || name[1] != '_')
3203 DECL_ANTICIPATED (decl) = 1;
3205 /* Possibly apply some default attributes to this built-in function. */
3207 decl_attributes (&decl, attrs, ATTR_FLAG_BUILT_IN);
3209 decl_attributes (&decl, NULL_TREE, 0);
3214 /* Entry point for the benefit of c_common_nodes_and_builtins.
3216 Make a definition for a builtin function named NAME and whose data type
3217 is TYPE. TYPE should be a function type with argument types. This
3218 function places the anticipated declaration in the global namespace
3219 and additionally in the std namespace if appropriate.
3221 CLASS and CODE tell later passes how to compile calls to this function.
3222 See tree.h for possible values.
3224 If LIBNAME is nonzero, use that for DECL_ASSEMBLER_NAME,
3225 the name to be called if we can't opencode the function.
3227 If ATTRS is nonzero, use that for the function's attribute
3231 builtin_function (const char* name,
3234 enum built_in_class cl,
3235 const char* libname,
3238 /* All builtins that don't begin with an '_' should additionally
3239 go in the 'std' namespace. */
3242 push_namespace (std_identifier);
3243 builtin_function_1 (name, type, std_node, code, cl, libname, attrs);
3247 return builtin_function_1 (name, type, NULL_TREE, code,
3248 cl, libname, attrs);
3251 /* Generate a FUNCTION_DECL with the typical flags for a runtime library
3252 function. Not called directly. */
3255 build_library_fn_1 (tree name, enum tree_code operator_code, tree type)
3257 tree fn = build_lang_decl (FUNCTION_DECL, name, type);
3258 DECL_EXTERNAL (fn) = 1;
3259 TREE_PUBLIC (fn) = 1;
3260 DECL_ARTIFICIAL (fn) = 1;
3261 TREE_NOTHROW (fn) = 1;
3262 SET_OVERLOADED_OPERATOR_CODE (fn, operator_code);
3263 SET_DECL_LANGUAGE (fn, lang_c);
3264 /* Runtime library routines are, by definition, available in an
3265 external shared object. */
3266 DECL_VISIBILITY (fn) = VISIBILITY_DEFAULT;
3267 DECL_VISIBILITY_SPECIFIED (fn) = 1;
3271 /* Returns the _DECL for a library function with C linkage.
3272 We assume that such functions never throw; if this is incorrect,
3273 callers should unset TREE_NOTHROW. */
3276 build_library_fn (tree name, tree type)
3278 return build_library_fn_1 (name, ERROR_MARK, type);
3281 /* Returns the _DECL for a library function with C++ linkage. */
3284 build_cp_library_fn (tree name, enum tree_code operator_code, tree type)
3286 tree fn = build_library_fn_1 (name, operator_code, type);
3287 TREE_NOTHROW (fn) = TYPE_NOTHROW_P (type);
3288 DECL_CONTEXT (fn) = FROB_CONTEXT (current_namespace);
3289 SET_DECL_LANGUAGE (fn, lang_cplusplus);
3293 /* Like build_library_fn, but takes a C string instead of an
3297 build_library_fn_ptr (const char* name, tree type)
3299 return build_library_fn (get_identifier (name), type);
3302 /* Like build_cp_library_fn, but takes a C string instead of an
3306 build_cp_library_fn_ptr (const char* name, tree type)
3308 return build_cp_library_fn (get_identifier (name), ERROR_MARK, type);
3311 /* Like build_library_fn, but also pushes the function so that we will
3312 be able to find it via IDENTIFIER_GLOBAL_VALUE. */
3315 push_library_fn (tree name, tree type)
3317 tree fn = build_library_fn (name, type);
3318 pushdecl_top_level (fn);
3322 /* Like build_cp_library_fn, but also pushes the function so that it
3323 will be found by normal lookup. */
3326 push_cp_library_fn (enum tree_code operator_code, tree type)
3328 tree fn = build_cp_library_fn (ansi_opname (operator_code),
3335 /* Like push_library_fn, but takes a TREE_LIST of parm types rather than
3339 push_void_library_fn (tree name, tree parmtypes)
3341 tree type = build_function_type (void_type_node, parmtypes);
3342 return push_library_fn (name, type);
3345 /* Like push_library_fn, but also note that this function throws
3346 and does not return. Used for __throw_foo and the like. */
3349 push_throw_library_fn (tree name, tree type)
3351 tree fn = push_library_fn (name, type);
3352 TREE_THIS_VOLATILE (fn) = 1;
3353 TREE_NOTHROW (fn) = 0;
3357 /* When we call finish_struct for an anonymous union, we create
3358 default copy constructors and such. But, an anonymous union
3359 shouldn't have such things; this function undoes the damage to the
3360 anonymous union type T.
3362 (The reason that we create the synthesized methods is that we don't
3363 distinguish `union { int i; }' from `typedef union { int i; } U'.
3364 The first is an anonymous union; the second is just an ordinary
3368 fixup_anonymous_aggr (tree t)
3372 /* Wipe out memory of synthesized methods. */
3373 TYPE_HAS_CONSTRUCTOR (t) = 0;
3374 TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0;
3375 TYPE_HAS_INIT_REF (t) = 0;
3376 TYPE_HAS_CONST_INIT_REF (t) = 0;
3377 TYPE_HAS_ASSIGN_REF (t) = 0;
3378 TYPE_HAS_CONST_ASSIGN_REF (t) = 0;
3380 /* Splice the implicitly generated functions out of the TYPE_METHODS
3382 q = &TYPE_METHODS (t);
3385 if (DECL_ARTIFICIAL (*q))
3386 *q = TREE_CHAIN (*q);
3388 q = &TREE_CHAIN (*q);
3391 /* ISO C++ 9.5.3. Anonymous unions may not have function members. */
3392 if (TYPE_METHODS (t))
3393 error ("%Jan anonymous union cannot have function members",
3394 TYPE_MAIN_DECL (t));
3396 /* Anonymous aggregates cannot have fields with ctors, dtors or complex
3397 assignment operators (because they cannot have these methods themselves).
3398 For anonymous unions this is already checked because they are not allowed
3399 in any union, otherwise we have to check it. */
3400 if (TREE_CODE (t) != UNION_TYPE)
3404 for (field = TYPE_FIELDS (t); field; field = TREE_CHAIN (field))
3405 if (TREE_CODE (field) == FIELD_DECL)
3407 type = TREE_TYPE (field);
3408 if (CLASS_TYPE_P (type))
3410 if (TYPE_NEEDS_CONSTRUCTING (type))
3411 cp_error_at ("member %#D' with constructor not allowed in anonymous aggregate",
3413 if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type))
3414 cp_error_at ("member %#D' with destructor not allowed in anonymous aggregate",
3416 if (TYPE_HAS_COMPLEX_ASSIGN_REF (type))
3417 cp_error_at ("member %#D' with copy assignment operator not allowed in anonymous aggregate",
3424 /* Make sure that a declaration with no declarator is well-formed, i.e.
3425 just declares a tagged type or anonymous union.
3427 Returns the type declared; or NULL_TREE if none. */
3430 check_tag_decl (cp_decl_specifier_seq *declspecs)
3432 int saw_friend = declspecs->specs[(int)ds_friend] != 0;
3433 int saw_typedef = declspecs->specs[(int)ds_typedef] != 0;
3434 /* If a class, struct, or enum type is declared by the DECLSPECS
3435 (i.e, if a class-specifier, enum-specifier, or non-typename
3436 elaborated-type-specifier appears in the DECLSPECS),
3437 DECLARED_TYPE is set to the corresponding type. */
3438 tree declared_type = NULL_TREE;
3439 bool error_p = false;
3441 if (declspecs->multiple_types_p)
3442 error ("multiple types in one declaration");
3443 else if (declspecs->redefined_builtin_type)
3445 if (!in_system_header)
3446 pedwarn ("redeclaration of C++ built-in type %qT",
3447 declspecs->redefined_builtin_type);
3451 if (TYPE_P (declspecs->type)
3452 && ((TREE_CODE (declspecs->type) != TYPENAME_TYPE
3453 && IS_AGGR_TYPE (declspecs->type))
3454 || TREE_CODE (declspecs->type) == ENUMERAL_TYPE))
3455 declared_type = declspecs->type;
3456 else if (declspecs->type == error_mark_node)
3458 if (declared_type == NULL_TREE && ! saw_friend && !error_p)
3459 pedwarn ("declaration does not declare anything");
3460 /* Check for an anonymous union. */
3461 else if (declared_type && IS_AGGR_TYPE_CODE (TREE_CODE (declared_type))
3462 && TYPE_ANONYMOUS_P (declared_type))
3464 /* 7/3 In a simple-declaration, the optional init-declarator-list
3465 can be omitted only when declaring a class (clause 9) or
3466 enumeration (7.2), that is, when the decl-specifier-seq contains
3467 either a class-specifier, an elaborated-type-specifier with
3468 a class-key (9.1), or an enum-specifier. In these cases and
3469 whenever a class-specifier or enum-specifier is present in the
3470 decl-specifier-seq, the identifiers in these specifiers are among
3471 the names being declared by the declaration (as class-name,
3472 enum-names, or enumerators, depending on the syntax). In such
3473 cases, and except for the declaration of an unnamed bit-field (9.6),
3474 the decl-specifier-seq shall introduce one or more names into the
3475 program, or shall redeclare a name introduced by a previous
3476 declaration. [Example:
3477 enum { }; // ill-formed
3478 typedef class { }; // ill-formed
3482 error ("missing type-name in typedef-declaration");
3485 /* Anonymous unions are objects, so they can have specifiers. */;
3486 SET_ANON_AGGR_TYPE_P (declared_type);
3488 if (TREE_CODE (declared_type) != UNION_TYPE && pedantic
3489 && !in_system_header)
3490 pedwarn ("ISO C++ prohibits anonymous structs");
3495 if (declspecs->specs[(int)ds_inline]
3496 || declspecs->specs[(int)ds_virtual])
3497 error ("`%s' can only be specified for functions",
3498 declspecs->specs[(int)ds_inline]
3499 ? "inline" : "virtual");
3501 && (!current_class_type
3502 || current_scope () != current_class_type))
3503 error ("`friend' can only be specified inside a class");
3504 else if (declspecs->specs[(int)ds_explicit])
3505 error ("`explicit' can only be specified for constructors");
3506 else if (declspecs->storage_class)
3507 error ("a storage class can only be specified for objects "
3509 else if (declspecs->specs[(int)ds_const]
3510 || declspecs->specs[(int)ds_volatile]
3511 || declspecs->specs[(int)ds_restrict]
3512 || declspecs->specs[(int)ds_thread])
3513 error ("qualifiers can only be specified for objects "
3517 return declared_type;
3520 /* Called when a declaration is seen that contains no names to declare.
3521 If its type is a reference to a structure, union or enum inherited
3522 from a containing scope, shadow that tag name for the current scope
3523 with a forward reference.
3524 If its type defines a new named structure or union
3525 or defines an enum, it is valid but we need not do anything here.
3526 Otherwise, it is an error.
3528 C++: may have to grok the declspecs to learn about static,
3529 complain for anonymous unions.
3531 Returns the TYPE declared -- or NULL_TREE if none. */
3534 shadow_tag (cp_decl_specifier_seq *declspecs)
3536 tree t = check_tag_decl (declspecs);
3541 maybe_process_partial_specialization (t);
3543 /* This is where the variables in an anonymous union are
3544 declared. An anonymous union declaration looks like:
3546 because there is no declarator after the union, the parser
3547 sends that declaration here. */
3548 if (ANON_AGGR_TYPE_P (t))
3550 fixup_anonymous_aggr (t);
3552 if (TYPE_FIELDS (t))
3554 tree decl = grokdeclarator (/*declarator=*/NULL,
3555 declspecs, NORMAL, 0, NULL);
3556 finish_anon_union (decl);
3563 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
3566 groktypename (cp_decl_specifier_seq *type_specifiers,
3567 const cp_declarator *declarator)
3571 attrs = type_specifiers->attributes;
3572 type_specifiers->attributes = NULL_TREE;
3573 type = grokdeclarator (declarator, type_specifiers, TYPENAME, 0, &attrs);
3575 cplus_decl_attributes (&type, attrs, 0);
3579 /* Decode a declarator in an ordinary declaration or data definition.
3580 This is called as soon as the type information and variable name
3581 have been parsed, before parsing the initializer if any.
3582 Here we create the ..._DECL node, fill in its type,
3583 and put it on the list of decls for the current context.
3584 The ..._DECL node is returned as the value.
3586 Exception: for arrays where the length is not specified,
3587 the type is left null, to be filled in by `cp_finish_decl'.
3589 Function definitions do not come here; they go to start_function
3590 instead. However, external and forward declarations of functions
3591 do go through here. Structure field declarations are done by
3592 grokfield and not through here. */
3595 start_decl (const cp_declarator *declarator,
3596 cp_decl_specifier_seq *declspecs,
3599 tree prefix_attributes,
3606 /* This should only be done once on the top most decl. */
3607 if (have_extern_spec)
3609 declspecs->storage_class = sc_extern;
3610 have_extern_spec = false;
3613 /* An object declared as __attribute__((deprecated)) suppresses
3614 warnings of uses of other deprecated items. */
3615 if (lookup_attribute ("deprecated", attributes))
3616 deprecated_state = DEPRECATED_SUPPRESS;
3618 attributes = chainon (attributes, prefix_attributes);
3620 decl = grokdeclarator (declarator, declspecs, NORMAL, initialized,
3623 deprecated_state = DEPRECATED_NORMAL;
3625 if (decl == NULL_TREE || TREE_CODE (decl) == VOID_TYPE)
3628 type = TREE_TYPE (decl);
3630 if (type == error_mark_node)
3633 context = DECL_CONTEXT (decl);
3636 *pop_scope_p = push_scope (context);
3638 *pop_scope_p = false;
3640 /* We are only interested in class contexts, later. */
3641 if (context && TREE_CODE (context) == NAMESPACE_DECL)
3642 context = NULL_TREE;
3645 /* Is it valid for this decl to have an initializer at all?
3646 If not, set INITIALIZED to zero, which will indirectly
3647 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
3648 switch (TREE_CODE (decl))
3651 error ("typedef `%D' is initialized (use __typeof__ instead)", decl);
3656 error ("function `%#D' is initialized like a variable", decl);
3666 if (! toplevel_bindings_p ()
3667 && DECL_EXTERNAL (decl))
3668 warning ("declaration of `%#D' has `extern' and is initialized",
3670 DECL_EXTERNAL (decl) = 0;
3671 if (toplevel_bindings_p ())
3672 TREE_STATIC (decl) = 1;
3674 /* Tell `pushdecl' this is an initialized decl
3675 even though we don't yet have the initializer expression.
3676 Also tell `cp_finish_decl' it may store the real initializer. */
3677 DECL_INITIAL (decl) = error_mark_node;
3680 /* Set attributes here so if duplicate decl, will have proper attributes. */
3681 cplus_decl_attributes (&decl, attributes, 0);
3683 /* If #pragma weak was used, mark the decl weak now. */
3684 if (global_scope_p (current_binding_level))
3685 maybe_apply_pragma_weak (decl);
3687 if (TREE_CODE (decl) == FUNCTION_DECL
3688 && DECL_DECLARED_INLINE_P (decl)
3689 && DECL_UNINLINABLE (decl)
3690 && lookup_attribute ("noinline", DECL_ATTRIBUTES (decl)))
3691 warning ("%Jinline function '%D' given attribute noinline", decl, decl);
3693 if (context && COMPLETE_TYPE_P (complete_type (context)))
3695 if (TREE_CODE (decl) == VAR_DECL)
3697 tree field = lookup_field (context, DECL_NAME (decl), 0, false);
3698 if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
3699 error ("`%#D' is not a static member of `%#T'", decl, context);
3702 if (DECL_CONTEXT (field) != context)
3704 if (!same_type_p (DECL_CONTEXT (field), context))
3705 pedwarn ("ISO C++ does not permit `%T::%D' to be defined as `%T::%D'",
3706 DECL_CONTEXT (field), DECL_NAME (decl),
3707 context, DECL_NAME (decl));
3708 DECL_CONTEXT (decl) = DECL_CONTEXT (field);
3710 /* Static data member are tricky; an in-class initialization
3711 still doesn't provide a definition, so the in-class
3712 declaration will have DECL_EXTERNAL set, but will have an
3713 initialization. Thus, duplicate_decls won't warn
3714 about this situation, and so we check here. */
3715 if (DECL_INITIAL (decl) && DECL_INITIAL (field))
3716 error ("duplicate initialization of %D", decl);
3717 if (duplicate_decls (decl, field))
3723 tree field = check_classfn (context, decl,
3724 (processing_template_decl
3725 > template_class_depth (context))
3726 ? current_template_parms
3728 if (field && duplicate_decls (decl, field))
3732 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
3733 DECL_IN_AGGR_P (decl) = 0;
3734 if ((DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl))
3735 || CLASSTYPE_TEMPLATE_INSTANTIATION (context))
3737 SET_DECL_TEMPLATE_SPECIALIZATION (decl);
3738 /* [temp.expl.spec] An explicit specialization of a static data
3739 member of a template is a definition if the declaration
3740 includes an initializer; otherwise, it is a declaration.
3742 We check for processing_specialization so this only applies
3743 to the new specialization syntax. */
3744 if (DECL_INITIAL (decl) == NULL_TREE && processing_specialization)
3745 DECL_EXTERNAL (decl) = 1;
3748 if (DECL_EXTERNAL (decl) && ! DECL_TEMPLATE_SPECIALIZATION (decl))
3749 pedwarn ("declaration of `%#D' outside of class is not definition",
3753 /* Enter this declaration into the symbol table. */
3754 tem = maybe_push_decl (decl);
3756 if (processing_template_decl)
3757 tem = push_template_decl (tem);
3758 if (tem == error_mark_node)
3759 return error_mark_node;
3761 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
3762 /* Tell the back-end to use or not use .common as appropriate. If we say
3763 -fconserve-space, we want this to save .data space, at the expense of
3764 wrong semantics. If we say -fno-conserve-space, we want this to
3765 produce errors about redefs; to do this we force variables into the
3767 DECL_COMMON (tem) = ((TREE_CODE (tem) != VAR_DECL
3768 || !DECL_THREAD_LOCAL (tem))
3769 && (flag_conserve_space || ! TREE_PUBLIC (tem)));
3772 if (! processing_template_decl)
3779 start_decl_1 (tree decl)
3781 tree type = TREE_TYPE (decl);
3782 int initialized = (DECL_INITIAL (decl) != NULL_TREE);
3784 if (type == error_mark_node)
3788 /* Is it valid for this decl to have an initializer at all?
3789 If not, set INITIALIZED to zero, which will indirectly
3790 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
3792 /* Don't allow initializations for incomplete types except for
3793 arrays which might be completed by the initialization. */
3794 if (COMPLETE_TYPE_P (complete_type (type)))
3795 ; /* A complete type is ok. */
3796 else if (TREE_CODE (type) != ARRAY_TYPE)
3798 error ("variable `%#D' has initializer but incomplete type",
3801 type = TREE_TYPE (decl) = error_mark_node;
3803 else if (!COMPLETE_TYPE_P (complete_type (TREE_TYPE (type))))
3805 if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
3806 error ("elements of array `%#D' have incomplete type", decl);
3807 /* else we already gave an error in start_decl. */
3813 && TREE_CODE (decl) != TYPE_DECL
3814 && TREE_CODE (decl) != TEMPLATE_DECL
3815 && type != error_mark_node
3816 && IS_AGGR_TYPE (type)
3817 && ! DECL_EXTERNAL (decl))
3819 if ((! processing_template_decl || ! uses_template_parms (type))
3820 && !COMPLETE_TYPE_P (complete_type (type)))
3822 error ("aggregate `%#D' has incomplete type and cannot be defined",
3824 /* Change the type so that assemble_variable will give
3825 DECL an rtl we can live with: (mem (const_int 0)). */
3826 type = TREE_TYPE (decl) = error_mark_node;
3830 /* If any base type in the hierarchy of TYPE needs a constructor,
3831 then we set initialized to 1. This way any nodes which are
3832 created for the purposes of initializing this aggregate
3833 will live as long as it does. This is necessary for global
3834 aggregates which do not have their initializers processed until
3835 the end of the file. */
3836 initialized = TYPE_NEEDS_CONSTRUCTING (type);
3841 DECL_INITIAL (decl) = NULL_TREE;
3843 /* Create a new scope to hold this declaration if necessary.
3844 Whether or not a new scope is necessary cannot be determined
3845 until after the type has been completed; if the type is a
3846 specialization of a class template it is not until after
3847 instantiation has occurred that TYPE_HAS_NONTRIVIAL_DESTRUCTOR
3848 will be set correctly. */
3849 maybe_push_cleanup_level (type);
3852 /* Handle initialization of references. DECL, TYPE, and INIT have the
3853 same meaning as in cp_finish_decl. *CLEANUP must be NULL on entry,
3854 but will be set to a new CLEANUP_STMT if a temporary is created
3855 that must be destroyed subsequently.
3857 Returns an initializer expression to use to initialize DECL, or
3858 NULL if the initialization can be performed statically.
3860 Quotes on semantics can be found in ARM 8.4.3. */
3863 grok_reference_init (tree decl, tree type, tree init, tree *cleanup)
3867 if (init == NULL_TREE)
3869 if ((DECL_LANG_SPECIFIC (decl) == 0
3870 || DECL_IN_AGGR_P (decl) == 0)
3871 && ! DECL_THIS_EXTERN (decl))
3872 error ("`%D' declared as reference but not initialized", decl);
3876 if (TREE_CODE (init) == CONSTRUCTOR)
3878 error ("ISO C++ forbids use of initializer list to initialize reference `%D'", decl);
3882 if (TREE_CODE (init) == TREE_LIST)
3883 init = build_x_compound_expr_from_list (init, "initializer");
3885 if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE)
3886 init = convert_from_reference (init);
3888 if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
3889 && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
3890 /* Note: default conversion is only called in very special cases. */
3891 init = decay_conversion (init);
3893 /* Convert INIT to the reference type TYPE. This may involve the
3894 creation of a temporary, whose lifetime must be the same as that
3895 of the reference. If so, a DECL_EXPR for the temporary will be
3896 added just after the DECL_EXPR for DECL. That's why we don't set
3897 DECL_INITIAL for local references (instead assigning to them
3898 explicitly); we need to allow the temporary to be initialized
3900 tmp = initialize_reference (type, init, decl, cleanup);
3902 if (tmp == error_mark_node)
3904 else if (tmp == NULL_TREE)
3906 error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init));
3910 if (TREE_STATIC (decl) && !TREE_CONSTANT (tmp))
3913 DECL_INITIAL (decl) = tmp;
3918 /* When parsing `int a[] = {1, 2};' we don't know the size of the
3919 array until we finish parsing the initializer. If that's the
3920 situation we're in, update DECL accordingly. */
3923 maybe_deduce_size_from_array_init (tree decl, tree init)
3925 tree type = TREE_TYPE (decl);
3927 if (TREE_CODE (type) == ARRAY_TYPE
3928 && TYPE_DOMAIN (type) == NULL_TREE
3929 && TREE_CODE (decl) != TYPE_DECL)
3931 /* do_default is really a C-ism to deal with tentative definitions.
3932 But let's leave it here to ease the eventual merge. */
3933 int do_default = !DECL_EXTERNAL (decl);
3934 tree initializer = init ? init : DECL_INITIAL (decl);
3935 int failure = complete_array_type (type, initializer, do_default);
3938 error ("initializer fails to determine size of `%D'", decl);
3943 error ("array size missing in `%D'", decl);
3944 /* If a `static' var's size isn't known, make it extern as
3945 well as static, so it does not get allocated. If it's not
3946 `static', then don't mark it extern; finish_incomplete_decl
3947 will give it a default size and it will get allocated. */
3948 else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
3949 DECL_EXTERNAL (decl) = 1;
3952 if (pedantic && TYPE_DOMAIN (type) != NULL_TREE
3953 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
3955 error ("zero-size array `%D'", decl);
3957 layout_decl (decl, 0);
3961 /* Set DECL_SIZE, DECL_ALIGN, etc. for DECL (a VAR_DECL), and issue
3962 any appropriate error messages regarding the layout. */
3965 layout_var_decl (tree decl)
3967 tree type = TREE_TYPE (decl);
3969 tree ttype = target_type (type);
3972 /* If we haven't already layed out this declaration, do so now.
3973 Note that we must not call complete type for an external object
3974 because it's type might involve templates that we are not
3975 supposed to instantiate yet. (And it's perfectly valid to say
3976 `extern X x' for some incomplete type `X'.) */
3977 if (!DECL_EXTERNAL (decl))
3978 complete_type (type);
3979 if (!DECL_SIZE (decl)
3980 && TREE_TYPE (decl) != error_mark_node
3981 && (COMPLETE_TYPE_P (type)
3982 || (TREE_CODE (type) == ARRAY_TYPE
3983 && !TYPE_DOMAIN (type)
3984 && COMPLETE_TYPE_P (TREE_TYPE (type)))))
3985 layout_decl (decl, 0);
3987 if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
3989 /* An automatic variable with an incomplete type: that is an error.
3990 Don't talk about array types here, since we took care of that
3991 message in grokdeclarator. */
3992 error ("storage size of `%D' isn't known", decl);
3993 TREE_TYPE (decl) = error_mark_node;
3996 /* Keep this code around in case we later want to control debug info
3997 based on whether a type is "used". (jason 1999-11-11) */
3999 else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype))
4000 /* Let debugger know it should output info for this type. */
4001 note_debug_info_needed (ttype);
4003 if (TREE_STATIC (decl) && DECL_CLASS_SCOPE_P (decl))
4004 note_debug_info_needed (DECL_CONTEXT (decl));
4007 if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
4008 && DECL_SIZE (decl) != NULL_TREE
4009 && ! TREE_CONSTANT (DECL_SIZE (decl)))
4011 if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
4012 constant_expression_warning (DECL_SIZE (decl));
4014 error ("storage size of `%D' isn't constant", decl);
4017 if (TREE_STATIC (decl)
4018 && !DECL_ARTIFICIAL (decl)
4019 && current_function_decl
4020 && DECL_CONTEXT (decl) == current_function_decl)
4021 push_local_name (decl);
4024 /* If a local static variable is declared in an inline function, or if
4025 we have a weak definition, we must endeavor to create only one
4026 instance of the variable at link-time. */
4029 maybe_commonize_var (tree decl)
4031 /* Static data in a function with comdat linkage also has comdat
4033 if (TREE_STATIC (decl)
4034 /* Don't mess with __FUNCTION__. */
4035 && ! DECL_ARTIFICIAL (decl)
4036 && DECL_FUNCTION_SCOPE_P (decl)
4037 /* Unfortunately, import_export_decl has not always been called
4038 before the function is processed, so we cannot simply check
4040 && (DECL_COMDAT (DECL_CONTEXT (decl))
4041 || ((DECL_DECLARED_INLINE_P (DECL_CONTEXT (decl))
4042 || DECL_TEMPLATE_INSTANTIATION (DECL_CONTEXT (decl)))
4043 && TREE_PUBLIC (DECL_CONTEXT (decl)))))
4047 /* With weak symbols, we simply make the variable COMDAT;
4048 that will cause copies in multiple translations units to
4050 comdat_linkage (decl);
4054 if (DECL_INITIAL (decl) == NULL_TREE
4055 || DECL_INITIAL (decl) == error_mark_node)
4057 /* Without weak symbols, we can use COMMON to merge
4058 uninitialized variables. */
4059 TREE_PUBLIC (decl) = 1;
4060 DECL_COMMON (decl) = 1;
4064 /* While for initialized variables, we must use internal
4065 linkage -- which means that multiple copies will not
4067 TREE_PUBLIC (decl) = 0;
4068 DECL_COMMON (decl) = 0;
4069 cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl);
4070 warning ("%J you can work around this by removing the initializer",
4075 else if (DECL_LANG_SPECIFIC (decl) && DECL_COMDAT (decl))
4076 /* Set it up again; we might have set DECL_INITIAL since the last
4078 comdat_linkage (decl);
4081 /* Issue an error message if DECL is an uninitialized const variable. */
4084 check_for_uninitialized_const_var (tree decl)
4086 tree type = TREE_TYPE (decl);
4088 /* ``Unless explicitly declared extern, a const object does not have
4089 external linkage and must be initialized. ($8.4; $12.1)'' ARM
4091 if (TREE_CODE (decl) == VAR_DECL
4092 && TREE_CODE (type) != REFERENCE_TYPE
4093 && CP_TYPE_CONST_P (type)
4094 && !TYPE_NEEDS_CONSTRUCTING (type)
4095 && !DECL_INITIAL (decl))
4096 error ("uninitialized const `%D'", decl);
4099 /* FIELD is a FIELD_DECL or NULL. In the former case, the value
4100 returned is the next FIELD_DECL (possibly FIELD itself) that can be
4101 initialized. If there are no more such fields, the return value
4105 next_initializable_field (tree field)
4108 && (TREE_CODE (field) != FIELD_DECL
4109 || (DECL_C_BIT_FIELD (field) && !DECL_NAME (field))
4110 || DECL_ARTIFICIAL (field)))
4111 field = TREE_CHAIN (field);
4116 /* Undo the brace-elision allowed by [dcl.init.aggr] in a
4117 brace-enclosed aggregate initializer.
4119 *INITP is one of a list of initializers describing a brace-enclosed
4120 initializer for an entity of the indicated aggregate TYPE. It may
4121 not presently match the shape of the TYPE; for example:
4123 struct S { int a; int b; };
4124 struct S a[] = { 1, 2, 3, 4 };
4126 Here *INITP will point to TREE_LIST of four elements, rather than a
4127 list of two elements, each itself a list of two elements. This
4128 routine transforms INIT from the former form into the latter. The
4129 revised initializer is returned. */
4132 reshape_init (tree type, tree *initp)
4136 tree old_init_value;
4138 bool brace_enclosed_p;
4141 old_init_value = (TREE_CODE (*initp) == TREE_LIST
4142 ? TREE_VALUE (*initp) : old_init);
4144 my_friendly_assert (old_init_value, 20030723);
4146 /* If the initializer is brace-enclosed, pull initializers from the
4147 enclosed elements. Advance past the brace-enclosed initializer
4149 if (TREE_CODE (old_init_value) == CONSTRUCTOR
4150 && BRACE_ENCLOSED_INITIALIZER_P (old_init_value))
4152 *initp = TREE_CHAIN (old_init);
4153 TREE_CHAIN (old_init) = NULL_TREE;
4154 inits = CONSTRUCTOR_ELTS (old_init_value);
4156 brace_enclosed_p = true;
4161 brace_enclosed_p = false;
4164 /* A non-aggregate type is always initialized with a single
4166 if (!CP_AGGREGATE_TYPE_P (type))
4168 *initp = TREE_CHAIN (old_init);
4169 TREE_CHAIN (old_init) = NULL_TREE;
4170 /* It is invalid to initialize a non-aggregate type with a
4171 brace-enclosed initializer. */
4172 if (brace_enclosed_p)
4174 error ("brace-enclosed initializer used to initialize `%T'",
4176 if (TREE_CODE (old_init) == TREE_LIST)
4177 TREE_VALUE (old_init) = error_mark_node;
4179 old_init = error_mark_node;
4187 All implicit type conversions (clause _conv_) are considered when
4188 initializing the aggregate member with an initializer from an
4189 initializer-list. If the initializer can initialize a member,
4190 the member is initialized. Otherwise, if the member is itself a
4191 non-empty subaggregate, brace elision is assumed and the
4192 initializer is considered for the initialization of the first
4193 member of the subaggregate. */
4194 if (!brace_enclosed_p
4195 && can_convert_arg (type, TREE_TYPE (old_init_value), old_init_value))
4197 *initp = TREE_CHAIN (old_init);
4198 TREE_CHAIN (old_init) = NULL_TREE;
4202 if (TREE_CODE (old_init_value) == STRING_CST
4203 && TREE_CODE (type) == ARRAY_TYPE
4204 && char_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (type))))
4206 /* [dcl.init.string]
4208 A char array (whether plain char, signed char, or unsigned char)
4209 can be initialized by a string-literal (optionally enclosed in
4210 braces); a wchar_t array can be initialized by a wide
4211 string-literal (optionally enclosed in braces). */
4212 new_init = old_init;
4213 /* Move past the initializer. */
4214 *initp = TREE_CHAIN (old_init);
4215 TREE_CHAIN (old_init) = NULL_TREE;
4219 /* Build a CONSTRUCTOR to hold the contents of the aggregate. */
4220 new_init = build_constructor (NULL_TREE, NULL_TREE);
4222 if (CLASS_TYPE_P (type))
4226 field = next_initializable_field (TYPE_FIELDS (type));
4232 An initializer for an aggregate member that is an
4233 empty class shall have the form of an empty
4234 initializer-list {}. */
4235 if (!brace_enclosed_p)
4237 error ("initializer for `%T' must be brace-enclosed",
4239 return error_mark_node;
4244 /* Loop through the initializable fields, gathering
4250 /* Handle designated initializers, as an extension. */
4251 if (TREE_PURPOSE (*initp))
4254 pedwarn ("ISO C++ does not allow designated initializers");
4255 field = lookup_field_1 (type, TREE_PURPOSE (*initp),
4256 /*want_type=*/false);
4257 if (!field || TREE_CODE (field) != FIELD_DECL)
4258 error ("`%T' has no non-static data member named `%D'",
4259 type, TREE_PURPOSE (*initp));
4264 field_init = reshape_init (TREE_TYPE (field), initp);
4265 if (field_init == error_mark_node)
4266 return error_mark_node;
4267 TREE_CHAIN (field_init) = CONSTRUCTOR_ELTS (new_init);
4268 CONSTRUCTOR_ELTS (new_init) = field_init;
4271 When a union is initialized with a brace-enclosed
4272 initializer, the braces shall only contain an
4273 initializer for the first member of the union. */
4274 if (TREE_CODE (type) == UNION_TYPE)
4276 field = next_initializable_field (TREE_CHAIN (field));
4280 else if (TREE_CODE (type) == ARRAY_TYPE
4281 || TREE_CODE (type) == VECTOR_TYPE)
4286 /* If the bound of the array is known, take no more initializers
4287 than are allowed. */
4288 max_index = NULL_TREE;
4289 if (TREE_CODE (type) == ARRAY_TYPE)
4291 if (TYPE_DOMAIN (type))
4292 max_index = array_type_nelts (type);
4296 /* For a vector, the representation type is a struct
4297 containing a single member which is an array of the
4298 appropriate size. */
4299 tree rtype = TYPE_DEBUG_REPRESENTATION_TYPE (type);
4300 if (rtype && TYPE_DOMAIN (TREE_TYPE (TYPE_FIELDS (rtype))))
4301 max_index = array_type_nelts (TREE_TYPE (TYPE_FIELDS (rtype)));
4304 /* Loop through the array elements, gathering initializers. */
4305 for (index = size_zero_node;
4306 *initp && (!max_index || !tree_int_cst_lt (max_index, index));
4307 index = size_binop (PLUS_EXPR, index, size_one_node))
4311 element_init = reshape_init (TREE_TYPE (type), initp);
4312 if (element_init == error_mark_node)
4313 return error_mark_node;
4314 TREE_CHAIN (element_init) = CONSTRUCTOR_ELTS (new_init);
4315 CONSTRUCTOR_ELTS (new_init) = element_init;
4316 if (TREE_PURPOSE (element_init))
4318 tree next_index = TREE_PURPOSE (element_init);
4319 if (TREE_CODE (next_index) == IDENTIFIER_NODE)
4321 error ("name `%D' used in a GNU-style designated "
4322 "initializer for an array", next_index);
4323 TREE_PURPOSE (element_init) = NULL_TREE;
4333 /* The initializers were placed in reverse order in the
4335 CONSTRUCTOR_ELTS (new_init) = nreverse (CONSTRUCTOR_ELTS (new_init));
4337 if (TREE_CODE (old_init) == TREE_LIST)
4338 new_init = build_tree_list (TREE_PURPOSE (old_init), new_init);
4341 /* If this was a brace-enclosed initializer and all of the
4342 initializers were not used up, there is a problem. */
4343 if (brace_enclosed_p && *initp)
4344 error ("too many initializers for `%T'", type);
4349 /* Verify INIT (the initializer for DECL), and record the
4350 initialization in DECL_INITIAL, if appropriate. CLEANUP is as for
4351 grok_reference_init.
4353 If the return value is non-NULL, it is an expression that must be
4354 evaluated dynamically to initialize DECL. */
4357 check_initializer (tree decl, tree init, int flags, tree *cleanup)
4359 tree type = TREE_TYPE (decl);
4360 tree init_code = NULL;
4362 /* If `start_decl' didn't like having an initialization, ignore it now. */
4363 if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE)
4366 /* If an initializer is present, DECL_INITIAL has been
4367 error_mark_node, to indicate that an as-of-yet unevaluated
4368 initialization will occur. From now on, DECL_INITIAL reflects
4369 the static initialization -- if any -- of DECL. */
4370 DECL_INITIAL (decl) = NULL_TREE;
4372 /* Things that are going to be initialized need to have complete
4374 TREE_TYPE (decl) = type = complete_type (TREE_TYPE (decl));
4376 if (type == error_mark_node)
4377 /* We will have already complained. */
4379 else if (init && COMPLETE_TYPE_P (type)
4380 && !TREE_CONSTANT (TYPE_SIZE (type)))
4382 error ("variable-sized object `%D' may not be initialized", decl);
4385 else if (TREE_CODE (type) == ARRAY_TYPE
4386 && !COMPLETE_TYPE_P (complete_type (TREE_TYPE (type))))
4388 error ("elements of array `%#D' have incomplete type", decl);
4391 else if (TREE_CODE (type) != ARRAY_TYPE && !COMPLETE_TYPE_P (type))
4393 error ("`%D' has incomplete type", decl);
4394 TREE_TYPE (decl) = error_mark_node;
4398 if (TREE_CODE (decl) == CONST_DECL)
4400 my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148);
4402 DECL_INITIAL (decl) = init;
4404 my_friendly_assert (init != NULL_TREE, 149);
4407 else if (!DECL_EXTERNAL (decl) && TREE_CODE (type) == REFERENCE_TYPE)
4408 init = grok_reference_init (decl, type, init, cleanup);
4411 if (TREE_CODE (init) == CONSTRUCTOR
4412 && BRACE_ENCLOSED_INITIALIZER_P (init))
4414 /* [dcl.init] paragraph 13,
4415 If T is a scalar type, then a declaration of the form
4420 reshape_init will complain about the extra braces,
4421 and doesn't do anything useful in the case where TYPE is
4422 scalar, so just don't call it. */
4423 if (CP_AGGREGATE_TYPE_P (type))
4424 init = reshape_init (type, &init);
4426 if ((*targetm.vector_opaque_p) (type))
4428 error ("opaque vector types cannot be initialized");
4429 init = error_mark_node;
4433 /* If DECL has an array type without a specific bound, deduce the
4434 array size from the initializer. */
4435 maybe_deduce_size_from_array_init (decl, init);
4436 type = TREE_TYPE (decl);
4438 if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type))
4440 if (TREE_CODE (type) == ARRAY_TYPE)
4441 goto initialize_aggr;
4442 else if (TREE_CODE (init) == CONSTRUCTOR
4443 && BRACE_ENCLOSED_INITIALIZER_P (init))
4445 if (TYPE_NON_AGGREGATE_CLASS (type))
4447 error ("`%D' must be initialized by constructor, not by `{...}'",
4449 init = error_mark_node;
4452 goto dont_use_constructor;
4456 int saved_stmts_are_full_exprs_p;
4459 saved_stmts_are_full_exprs_p = 0;
4460 if (building_stmt_tree ())
4462 saved_stmts_are_full_exprs_p = stmts_are_full_exprs_p ();
4463 current_stmt_tree ()->stmts_are_full_exprs_p = 1;
4465 init = build_aggr_init (decl, init, flags);
4466 if (building_stmt_tree ())
4467 current_stmt_tree ()->stmts_are_full_exprs_p =
4468 saved_stmts_are_full_exprs_p;
4474 dont_use_constructor:
4475 if (TREE_CODE (init) != TREE_VEC)
4477 init_code = store_init_value (decl, init);
4482 else if (DECL_EXTERNAL (decl))
4484 else if (TYPE_P (type) && TYPE_NEEDS_CONSTRUCTING (type))
4485 goto initialize_aggr;
4486 else if (IS_AGGR_TYPE (type))
4488 tree core_type = strip_array_types (type);
4490 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (core_type))
4491 error ("structure `%D' with uninitialized const members", decl);
4492 if (CLASSTYPE_REF_FIELDS_NEED_INIT (core_type))
4493 error ("structure `%D' with uninitialized reference members",
4496 check_for_uninitialized_const_var (decl);
4499 check_for_uninitialized_const_var (decl);
4501 if (init && init != error_mark_node)
4502 init_code = build (INIT_EXPR, type, decl, init);
4507 /* If DECL is not a local variable, give it RTL. */
4510 make_rtl_for_nonlocal_decl (tree decl, tree init, const char* asmspec)
4512 int toplev = toplevel_bindings_p ();
4515 /* Handle non-variables up front. */
4516 if (TREE_CODE (decl) != VAR_DECL)
4518 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
4522 /* If we see a class member here, it should be a static data
4524 if (DECL_LANG_SPECIFIC (decl) && DECL_IN_AGGR_P (decl))
4526 my_friendly_assert (TREE_STATIC (decl), 19990828);
4527 /* An in-class declaration of a static data member should be
4528 external; it is only a declaration, and not a definition. */
4529 if (init == NULL_TREE)
4530 my_friendly_assert (DECL_EXTERNAL (decl), 20000723);
4533 /* Set the DECL_ASSEMBLER_NAME for the variable. */
4536 change_decl_assembler_name (decl, get_identifier (asmspec));
4537 /* The `register' keyword, when used together with an
4538 asm-specification, indicates that the variable should be
4539 placed in a particular register. */
4540 if (DECL_REGISTER (decl))
4541 DECL_HARD_REGISTER (decl) = 1;
4544 /* We don't create any RTL for local variables. */
4545 if (DECL_FUNCTION_SCOPE_P (decl) && !TREE_STATIC (decl))
4548 /* We defer emission of local statics until the corresponding
4549 DECL_EXPR is expanded. */
4550 defer_p = DECL_FUNCTION_SCOPE_P (decl) || DECL_VIRTUAL_P (decl);
4552 /* We try to defer namespace-scope static constants so that they are
4553 not emitted into the object file unnecessarily. */
4554 if (!DECL_VIRTUAL_P (decl)
4555 && TREE_READONLY (decl)
4556 && DECL_INITIAL (decl) != NULL_TREE
4557 && DECL_INITIAL (decl) != error_mark_node
4558 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl))
4560 && !TREE_PUBLIC (decl))
4562 /* Fool with the linkage of static consts according to #pragma
4564 if (!interface_unknown && !TREE_PUBLIC (decl))
4566 TREE_PUBLIC (decl) = 1;
4567 DECL_EXTERNAL (decl) = interface_only;
4572 /* Likewise for template instantiations. */
4573 else if (DECL_LANG_SPECIFIC (decl)
4574 && DECL_IMPLICIT_INSTANTIATION (decl))
4577 /* If we're deferring the variable, we only need to make RTL if
4578 there's an ASMSPEC. Otherwise, we'll lazily create it later when
4579 we need it. (There's no way to lazily create RTL for things that
4580 have assembly specs because the information about the specifier
4581 isn't stored in the tree, yet) */
4582 if (defer_p && asmspec)
4583 make_decl_rtl (decl, asmspec);
4584 /* If we're not deferring, go ahead and assemble the variable. */
4586 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
4589 /* Generate code to initialize DECL (a local variable). */
4592 initialize_local_var (tree decl, tree init)
4594 tree type = TREE_TYPE (decl);
4597 my_friendly_assert (TREE_CODE (decl) == VAR_DECL
4598 || TREE_CODE (decl) == RESULT_DECL,
4600 my_friendly_assert (!TREE_STATIC (decl), 20021010);
4602 if (DECL_SIZE (decl) == NULL_TREE)
4604 /* If we used it already as memory, it must stay in memory. */
4605 DECL_INITIAL (decl) = NULL_TREE;
4606 TREE_ADDRESSABLE (decl) = TREE_USED (decl);
4609 if (DECL_SIZE (decl) && type != error_mark_node)
4613 /* Compute and store the initial value. */
4614 already_used = TREE_USED (decl) || TREE_USED (type);
4616 /* Perform the initialization. */
4619 int saved_stmts_are_full_exprs_p;
4621 my_friendly_assert (building_stmt_tree (), 20000906);
4622 saved_stmts_are_full_exprs_p = stmts_are_full_exprs_p ();
4623 current_stmt_tree ()->stmts_are_full_exprs_p = 1;
4624 finish_expr_stmt (init);
4625 current_stmt_tree ()->stmts_are_full_exprs_p =
4626 saved_stmts_are_full_exprs_p;
4629 /* Set this to 0 so we can tell whether an aggregate which was
4630 initialized was ever used. Don't do this if it has a
4631 destructor, so we don't complain about the 'resource
4632 allocation is initialization' idiom. Now set
4633 attribute((unused)) on types so decls of that type will be
4634 marked used. (see TREE_USED, above.) */
4635 if (TYPE_NEEDS_CONSTRUCTING (type)
4637 && TYPE_HAS_TRIVIAL_DESTRUCTOR (type)
4638 && DECL_NAME (decl))
4639 TREE_USED (decl) = 0;
4640 else if (already_used)
4641 TREE_USED (decl) = 1;
4644 /* Generate a cleanup, if necessary. */
4645 cleanup = cxx_maybe_build_cleanup (decl);
4646 if (DECL_SIZE (decl) && cleanup)
4647 finish_decl_cleanup (decl, cleanup);
4650 /* Finish processing of a declaration;
4651 install its line number and initial value.
4652 If the length of an array type is not known before,
4653 it must be determined now, from the initial value, or it is an error.
4655 INIT holds the value of an initializer that should be allowed to escape
4658 FLAGS is LOOKUP_ONLYCONVERTING if the = init syntax was used, else 0
4659 if the (init) syntax was used. */
4662 cp_finish_decl (tree decl, tree init, tree asmspec_tree, int flags)
4665 tree ttype = NULL_TREE;
4667 const char *asmspec = NULL;
4668 int was_readonly = 0;
4670 if (decl == error_mark_node)
4675 error ("assignment (not initialization) in declaration");
4679 my_friendly_assert (TREE_CODE (decl) != RESULT_DECL, 20030619);
4681 /* Assume no cleanup is required. */
4682 cleanup = NULL_TREE;
4684 /* If a name was specified, get the string. */
4685 if (global_scope_p (current_binding_level))
4686 asmspec_tree = maybe_apply_renaming_pragma (decl, asmspec_tree);
4688 asmspec = TREE_STRING_POINTER (asmspec_tree);
4690 if (init && TREE_CODE (init) == NAMESPACE_DECL)
4692 error ("cannot initialize `%D' to namespace `%D'",
4697 if (current_class_type
4698 && CP_DECL_CONTEXT (decl) == current_class_type
4699 && TYPE_BEING_DEFINED (current_class_type)
4700 && (DECL_INITIAL (decl) || init))
4701 DECL_INITIALIZED_IN_CLASS_P (decl) = 1;
4703 type = TREE_TYPE (decl);
4705 if (type == error_mark_node)
4708 if (TYPE_HAS_MUTABLE_P (type))
4709 TREE_READONLY (decl) = 0;
4711 if (processing_template_decl)
4713 /* Add this declaration to the statement-tree. */
4714 if (at_function_scope_p ())
4715 add_decl_expr (decl);
4717 if (init && DECL_INITIAL (decl))
4718 DECL_INITIAL (decl) = init;
4719 if (TREE_CODE (decl) == VAR_DECL
4720 && !DECL_PRETTY_FUNCTION_P (decl)
4721 && !dependent_type_p (TREE_TYPE (decl)))
4722 maybe_deduce_size_from_array_init (decl, init);
4726 /* Parameters are handled by store_parm_decls, not cp_finish_decl. */
4727 my_friendly_assert (TREE_CODE (decl) != PARM_DECL, 19990828);
4729 /* Take care of TYPE_DECLs up front. */
4730 if (TREE_CODE (decl) == TYPE_DECL)
4732 if (type != error_mark_node
4733 && IS_AGGR_TYPE (type) && DECL_NAME (decl))
4735 if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
4736 warning ("shadowing previous type declaration of `%#D'", decl);
4737 set_identifier_type_value (DECL_NAME (decl), decl);
4740 /* If we have installed this as the canonical typedef for this
4741 type, and that type has not been defined yet, delay emitting
4742 the debug information for it, as we will emit it later. */
4743 if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl
4744 && !COMPLETE_TYPE_P (TREE_TYPE (decl)))
4745 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
4747 rest_of_decl_compilation (decl, NULL,
4748 DECL_CONTEXT (decl) == NULL_TREE, at_eof);
4752 if (TREE_CODE (decl) != FUNCTION_DECL)
4753 ttype = target_type (type);
4756 /* Currently, GNU C++ puts constants in text space, making them
4757 impossible to initialize. In the future, one would hope for
4758 an operating system which understood the difference between
4759 initialization and the running of a program. */
4760 if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl))
4763 if (TYPE_NEEDS_CONSTRUCTING (type)
4764 || TREE_CODE (type) == REFERENCE_TYPE)
4765 TREE_READONLY (decl) = 0;
4768 if (TREE_CODE (decl) == VAR_DECL)
4770 /* Only PODs can have thread-local storage. Other types may require
4771 various kinds of non-trivial initialization. */
4772 if (DECL_THREAD_LOCAL (decl) && !pod_type_p (TREE_TYPE (decl)))
4773 error ("`%D' cannot be thread-local because it has non-POD type `%T'",
4774 decl, TREE_TYPE (decl));
4775 /* Convert the initializer to the type of DECL, if we have not
4776 already initialized DECL. */
4777 if (!DECL_INITIALIZED_P (decl)
4778 /* If !DECL_EXTERNAL then DECL is being defined. In the
4779 case of a static data member initialized inside the
4780 class-specifier, there can be an initializer even if DECL
4781 is *not* defined. */
4782 && (!DECL_EXTERNAL (decl) || init))
4784 init = check_initializer (decl, init, flags, &cleanup);
4785 /* Thread-local storage cannot be dynamically initialized. */
4786 if (DECL_THREAD_LOCAL (decl) && init)
4788 error ("`%D' is thread-local and so cannot be dynamically "
4789 "initialized", decl);
4796 The memory occupied by any object of static storage
4797 duration is zero-initialized at program startup before
4798 any other initialization takes place.
4800 We cannot create an appropriate initializer until after
4801 the type of DECL is finalized. If DECL_INITIAL is set,
4802 then the DECL is statically initialized, and any
4803 necessary zero-initialization has already been performed. */
4804 if (TREE_STATIC (decl) && !DECL_INITIAL (decl))
4805 DECL_INITIAL (decl) = build_zero_init (TREE_TYPE (decl),
4806 /*nelts=*/NULL_TREE,
4807 /*static_storage_p=*/true);
4808 /* Remember that the initialization for this variable has
4810 DECL_INITIALIZED_P (decl) = 1;
4811 /* The variable is being defined, so determine its
4813 determine_visibility (decl);
4815 /* If the variable has an array type, lay out the type, even if
4816 there is no initializer. It is valid to index through the
4817 array, and we must get TYPE_ALIGN set correctly on the array
4819 else if (TREE_CODE (type) == ARRAY_TYPE)
4823 /* Add this declaration to the statement-tree. This needs to happen
4824 after the call to check_initializer so that the DECL_EXPR for a
4825 reference temp is added before the DECL_EXPR for the reference itself. */
4826 if (at_function_scope_p ())
4827 add_decl_expr (decl);
4829 if (TREE_CODE (decl) == VAR_DECL)
4830 layout_var_decl (decl);
4832 /* Output the assembler code and/or RTL code for variables and functions,
4833 unless the type is an undefined structure or union.
4834 If not, it will get done when the type is completed. */
4835 if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL)
4837 if (TREE_CODE (decl) == VAR_DECL)
4838 maybe_commonize_var (decl);
4840 make_rtl_for_nonlocal_decl (decl, init, asmspec);
4842 /* Check for abstractness of the type. Notice that there is no
4843 need to strip array types here since the check for those types
4844 is already done within create_array_type_for_decl. */
4845 if (TREE_CODE (type) == FUNCTION_TYPE
4846 || TREE_CODE (type) == METHOD_TYPE)
4847 abstract_virtuals_error (decl, TREE_TYPE (type));
4849 abstract_virtuals_error (decl, type);
4851 if (TREE_CODE (decl) == FUNCTION_DECL
4852 || TREE_TYPE (decl) == error_mark_node)
4853 /* No initialization required. */
4855 else if (DECL_EXTERNAL (decl)
4856 && ! (DECL_LANG_SPECIFIC (decl)
4857 && DECL_NOT_REALLY_EXTERN (decl)))
4860 DECL_INITIAL (decl) = init;
4864 /* A variable definition. */
4865 if (DECL_FUNCTION_SCOPE_P (decl))
4867 /* Initialize the local variable. */
4868 if (processing_template_decl)
4870 if (init || DECL_INITIAL (decl) == error_mark_node)
4871 DECL_INITIAL (decl) = init;
4873 else if (!TREE_STATIC (decl))
4874 initialize_local_var (decl, init);
4877 if (TREE_STATIC (decl))
4878 expand_static_init (decl, init);
4882 /* If a CLEANUP_STMT was created to destroy a temporary bound to a
4883 reference, insert it in the statement-tree now. */
4885 push_cleanup (decl, cleanup, false);
4890 TREE_READONLY (decl) = 1;
4892 /* If this was marked 'used', be sure it will be output. */
4893 if (lookup_attribute ("used", DECL_ATTRIBUTES (decl)))
4894 mark_decl_referenced (decl);
4897 /* This is here for a midend callback from c-common.c. */
4900 finish_decl (tree decl, tree init, tree asmspec_tree)
4902 cp_finish_decl (decl, init, asmspec_tree, 0);
4905 /* Returns a declaration for a VAR_DECL as if:
4907 extern "C" TYPE NAME;
4909 had been seen. Used to create compiler-generated global
4913 declare_global_var (tree name, tree type)
4917 push_to_top_level ();
4918 decl = build_decl (VAR_DECL, name, type);
4919 TREE_PUBLIC (decl) = 1;
4920 DECL_EXTERNAL (decl) = 1;
4921 DECL_ARTIFICIAL (decl) = 1;
4923 cp_finish_decl (decl, NULL_TREE, NULL_TREE, 0);
4924 pop_from_top_level ();
4929 /* Returns a pointer to the `atexit' function. Note that if
4930 FLAG_USE_CXA_ATEXIT is nonzero, then this will actually be the new
4931 `__cxa_atexit' function specified in the IA64 C++ ABI. */
4934 get_atexit_node (void)
4945 if (flag_use_cxa_atexit)
4947 /* The declaration for `__cxa_atexit' is:
4949 int __cxa_atexit (void (*)(void *), void *, void *)
4951 We build up the argument types and then then function type
4954 /* First, build the pointer-to-function type for the first
4956 arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node);
4957 fn_type = build_function_type (void_type_node, arg_types);
4958 fn_ptr_type = build_pointer_type (fn_type);
4959 /* Then, build the rest of the argument types. */
4960 arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node);
4961 arg_types = tree_cons (NULL_TREE, ptr_type_node, arg_types);
4962 arg_types = tree_cons (NULL_TREE, fn_ptr_type, arg_types);
4963 /* And the final __cxa_atexit type. */
4964 fn_type = build_function_type (integer_type_node, arg_types);
4965 fn_ptr_type = build_pointer_type (fn_type);
4966 name = "__cxa_atexit";
4970 /* The declaration for `atexit' is:
4972 int atexit (void (*)());
4974 We build up the argument types and then then function type
4976 fn_type = build_function_type (void_type_node, void_list_node);
4977 fn_ptr_type = build_pointer_type (fn_type);
4978 arg_types = tree_cons (NULL_TREE, fn_ptr_type, void_list_node);
4979 /* Build the final atexit type. */
4980 fn_type = build_function_type (integer_type_node, arg_types);
4984 /* Now, build the function declaration. */
4985 push_lang_context (lang_name_c);
4986 atexit_fndecl = build_library_fn_ptr (name, fn_type);
4987 mark_used (atexit_fndecl);
4988 pop_lang_context ();
4989 atexit_node = decay_conversion (atexit_fndecl);
4994 /* Returns the __dso_handle VAR_DECL. */
4997 get_dso_handle_node (void)
4999 if (dso_handle_node)
5000 return dso_handle_node;
5002 /* Declare the variable. */
5003 dso_handle_node = declare_global_var (get_identifier ("__dso_handle"),
5006 return dso_handle_node;
5009 /* Begin a new function with internal linkage whose job will be simply
5010 to destroy some particular variable. */
5012 static GTY(()) int start_cleanup_cnt;
5015 start_cleanup_fn (void)
5017 int old_interface_only = interface_only;
5018 int old_interface_unknown = interface_unknown;
5024 push_to_top_level ();
5026 /* No need to mangle this. */
5027 push_lang_context (lang_name_c);
5030 interface_unknown = 1;
5032 /* Build the parameter-types. */
5033 parmtypes = void_list_node;
5034 /* Functions passed to __cxa_atexit take an additional parameter.
5035 We'll just ignore it. After we implement the new calling
5036 convention for destructors, we can eliminate the use of
5037 additional cleanup functions entirely in the -fnew-abi case. */
5038 if (flag_use_cxa_atexit)
5039 parmtypes = tree_cons (NULL_TREE, ptr_type_node, parmtypes);
5040 /* Build the function type itself. */
5041 fntype = build_function_type (void_type_node, parmtypes);
5042 /* Build the name of the function. */
5043 sprintf (name, "__tcf_%d", start_cleanup_cnt++);
5044 /* Build the function declaration. */
5045 fndecl = build_lang_decl (FUNCTION_DECL, get_identifier (name), fntype);
5046 /* It's a function with internal linkage, generated by the
5048 TREE_PUBLIC (fndecl) = 0;
5049 DECL_ARTIFICIAL (fndecl) = 1;
5050 /* Make the function `inline' so that it is only emitted if it is
5051 actually needed. It is unlikely that it will be inlined, since
5052 it is only called via a function pointer, but we avoid unnecessary
5053 emissions this way. */
5054 DECL_INLINE (fndecl) = 1;
5055 DECL_DECLARED_INLINE_P (fndecl) = 1;
5056 DECL_INTERFACE_KNOWN (fndecl) = 1;
5057 /* Build the parameter. */
5058 if (flag_use_cxa_atexit)
5062 parmdecl = cp_build_parm_decl (NULL_TREE, ptr_type_node);
5063 DECL_CONTEXT (parmdecl) = fndecl;
5064 TREE_USED (parmdecl) = 1;
5065 DECL_ARGUMENTS (fndecl) = parmdecl;
5069 start_preparsed_function (fndecl, NULL_TREE, SF_PRE_PARSED);
5071 interface_unknown = old_interface_unknown;
5072 interface_only = old_interface_only;
5074 pop_lang_context ();
5076 return current_function_decl;
5079 /* Finish the cleanup function begun by start_cleanup_fn. */
5082 end_cleanup_fn (void)
5084 expand_or_defer_fn (finish_function (0));
5086 pop_from_top_level ();
5089 /* Generate code to handle the destruction of DECL, an object with
5090 static storage duration. */
5093 register_dtor_fn (tree decl)
5100 if (TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl)))
5103 /* Call build_cleanup before we enter the anonymous function so that
5104 any access checks will be done relative to the current scope,
5105 rather than the scope of the anonymous function. */
5106 build_cleanup (decl);
5108 /* Now start the function. */
5109 cleanup = start_cleanup_fn ();
5111 /* Now, recompute the cleanup. It may contain SAVE_EXPRs that refer
5112 to the original function, rather than the anonymous one. That
5113 will make the back-end think that nested functions are in use,
5114 which causes confusion. */
5116 push_deferring_access_checks (dk_no_check);
5117 fcall = build_cleanup (decl);
5118 pop_deferring_access_checks ();
5120 /* Create the body of the anonymous function. */
5121 compound_stmt = begin_compound_stmt (BCS_FN_BODY);
5122 finish_expr_stmt (fcall);
5123 finish_compound_stmt (compound_stmt);
5126 /* Call atexit with the cleanup function. */
5127 cxx_mark_addressable (cleanup);
5128 mark_used (cleanup);
5129 cleanup = build_unary_op (ADDR_EXPR, cleanup, 0);
5130 if (flag_use_cxa_atexit)
5132 args = tree_cons (NULL_TREE,
5133 build_unary_op (ADDR_EXPR, get_dso_handle_node (), 0),
5135 args = tree_cons (NULL_TREE, null_pointer_node, args);
5136 args = tree_cons (NULL_TREE, cleanup, args);
5139 args = tree_cons (NULL_TREE, cleanup, NULL_TREE);
5140 finish_expr_stmt (build_function_call (get_atexit_node (), args));
5143 /* DECL is a VAR_DECL with static storage duration. INIT, if present,
5144 is its initializer. Generate code to handle the construction
5145 and destruction of DECL. */
5148 expand_static_init (tree decl, tree init)
5150 my_friendly_assert (TREE_CODE (decl) == VAR_DECL, 20021010);
5151 my_friendly_assert (TREE_STATIC (decl), 20021010);
5153 /* Some variables require no initialization. */
5155 && !TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))
5156 && TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl)))
5159 if (! toplevel_bindings_p ())
5161 /* Emit code to perform this initialization but once. */
5168 /* Emit code to perform this initialization but once. This code
5171 static int guard = 0;
5173 // Do initialization.
5175 // Register variable for destruction at end of program.
5178 Note that the `temp' variable is only set to 1 *after* the
5179 initialization is complete. This ensures that an exception,
5180 thrown during the construction, will cause the variable to
5181 reinitialized when we pass through this code again, as per:
5185 If the initialization exits by throwing an exception, the
5186 initialization is not complete, so it will be tried again
5187 the next time control enters the declaration.
5189 In theory, this process should be thread-safe, too; multiple
5190 threads should not be able to initialize the variable more
5191 than once. We don't yet attempt to ensure thread-safety. */
5193 /* Create the guard variable. */
5194 guard = get_guard (decl);
5196 /* Begin the conditional initialization. */
5197 if_stmt = begin_if_stmt ();
5198 finish_if_stmt_cond (get_guard_cond (guard), if_stmt);
5199 then_clause = begin_compound_stmt (0);
5201 /* Do the initialization itself. */
5202 assignment = init ? init : NULL_TREE;
5204 /* Once the assignment is complete, set TEMP to 1. Since the
5205 construction of the static object is complete at this point,
5206 we want to make sure TEMP is set to 1 even if a temporary
5207 constructed during the initialization throws an exception
5208 when it is destroyed. So, we combine the initialization and
5209 the assignment to TEMP into a single expression, ensuring
5210 that when we call finish_expr_stmt the cleanups will not be
5211 run until after TEMP is set to 1. */
5212 guard_init = set_guard (guard);
5214 assignment = build_compound_expr (assignment, guard_init);
5216 assignment = guard_init;
5217 finish_expr_stmt (assignment);
5219 /* Use atexit to register a function for destroying this static
5221 register_dtor_fn (decl);
5223 finish_compound_stmt (then_clause);
5224 finish_then_clause (if_stmt);
5225 finish_if_stmt (if_stmt);
5228 static_aggregates = tree_cons (init, decl, static_aggregates);
5232 /* Make TYPE a complete type based on INITIAL_VALUE.
5233 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
5234 2 if there was no information (in which case assume 0 if DO_DEFAULT). */
5237 complete_array_type (tree type, tree initial_value, int do_default)
5239 tree maxindex = NULL_TREE;
5244 /* An array of character type can be initialized from a
5245 brace-enclosed string constant. */
5246 if (char_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (type)))
5247 && TREE_CODE (initial_value) == CONSTRUCTOR
5248 && CONSTRUCTOR_ELTS (initial_value)
5249 && (TREE_CODE (TREE_VALUE (CONSTRUCTOR_ELTS (initial_value)))
5251 && TREE_CHAIN (CONSTRUCTOR_ELTS (initial_value)) == NULL_TREE)
5252 initial_value = TREE_VALUE (CONSTRUCTOR_ELTS (initial_value));
5254 /* Note MAXINDEX is really the maximum index, one less than the
5256 if (TREE_CODE (initial_value) == STRING_CST)
5259 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
5260 maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
5263 else if (TREE_CODE (initial_value) == CONSTRUCTOR)
5265 tree elts = CONSTRUCTOR_ELTS (initial_value);
5267 maxindex = ssize_int (-1);
5268 for (; elts; elts = TREE_CHAIN (elts))
5270 if (TREE_PURPOSE (elts))
5271 maxindex = TREE_PURPOSE (elts);
5273 maxindex = size_binop (PLUS_EXPR, maxindex, ssize_int (1));
5278 /* Make an error message unless that happened already. */
5279 if (initial_value != error_mark_node)
5282 initial_value = NULL_TREE;
5284 /* Prevent further error messages. */
5285 maxindex = build_int_2 (0, 0);
5292 maxindex = build_int_2 (0, 0);
5302 domain = build_index_type (maxindex);
5303 TYPE_DOMAIN (type) = domain;
5306 itype = TREE_TYPE (initial_value);
5309 if (itype && !TYPE_DOMAIN (itype))
5310 TYPE_DOMAIN (itype) = domain;
5311 /* The type of the main variant should never be used for arrays
5312 of different sizes. It should only ever be completed with the
5313 size of the array. */
5314 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)))
5315 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = domain;
5317 elt_type = TREE_TYPE (type);
5318 TYPE_NEEDS_CONSTRUCTING (type)
5319 = TYPE_NEEDS_CONSTRUCTING (TYPE_MAIN_VARIANT (elt_type));
5320 TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
5321 = TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TYPE_MAIN_VARIANT (elt_type));
5324 /* Lay out the type now that we can get the real answer. */
5331 /* Return zero if something is declared to be a member of type
5332 CTYPE when in the context of CUR_TYPE. STRING is the error
5333 message to print in that case. Otherwise, quietly return 1. */
5336 member_function_or_else (tree ctype, tree cur_type, enum overload_flags flags)
5338 if (ctype && ctype != cur_type)
5340 if (flags == DTOR_FLAG)
5341 error ("destructor for alien class `%T' cannot be a member",
5344 error ("constructor for alien class `%T' cannot be a member",
5351 /* Subroutine of `grokdeclarator'. */
5353 /* Generate errors possibly applicable for a given set of specifiers.
5354 This is for ARM $7.1.2. */
5357 bad_specifiers (tree object,
5366 error ("`%D' declared as a `virtual' %s", object, type);
5368 error ("`%D' declared as an `inline' %s", object, type);
5370 error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
5373 cp_error_at ("`%D' declared as a friend", object);
5375 && (TREE_CODE (object) == TYPE_DECL
5376 || (!TYPE_PTRFN_P (TREE_TYPE (object))
5377 && !TYPE_REFFN_P (TREE_TYPE (object))
5378 && !TYPE_PTRMEMFUNC_P (TREE_TYPE (object)))))
5379 cp_error_at ("`%D' declared with an exception specification", object);
5382 /* CTYPE is class type, or null if non-class.
5383 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
5385 DECLARATOR is the function's name.
5386 PARMS is a chain of PARM_DECLs for the function.
5387 VIRTUALP is truthvalue of whether the function is virtual or not.
5388 FLAGS are to be passed through to `grokclassfn'.
5389 QUALS are qualifiers indicating whether the function is `const'
5391 RAISES is a list of exceptions that this function can raise.
5392 CHECK is 1 if we must find this method in CTYPE, 0 if we should
5393 not look, and -1 if we should not call `grokclassfn' at all.
5395 Returns `NULL_TREE' if something goes wrong, after issuing
5396 applicable error messages. */
5399 grokfndecl (tree ctype,
5403 tree orig_declarator,
5405 enum overload_flags flags,
5417 int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
5418 int has_default_arg = 0;
5422 type = build_exception_variant (type, raises);
5424 decl = build_lang_decl (FUNCTION_DECL, declarator, type);
5425 DECL_ARGUMENTS (decl) = parms;
5426 /* Propagate volatile out from type to decl. */
5427 if (TYPE_VOLATILE (type))
5428 TREE_THIS_VOLATILE (decl) = 1;
5430 /* If this decl has namespace scope, set that up. */
5432 set_decl_namespace (decl, in_namespace, friendp);
5434 DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
5436 /* `main' and builtins have implicit 'C' linkage. */
5437 if ((MAIN_NAME_P (declarator)
5438 || (IDENTIFIER_LENGTH (declarator) > 10
5439 && IDENTIFIER_POINTER (declarator)[0] == '_'
5440 && IDENTIFIER_POINTER (declarator)[1] == '_'
5441 && strncmp (IDENTIFIER_POINTER (declarator)+2, "builtin_", 8) == 0))
5442 && current_lang_name == lang_name_cplusplus
5443 && ctype == NULL_TREE
5444 /* NULL_TREE means global namespace. */
5445 && DECL_CONTEXT (decl) == NULL_TREE)
5446 SET_DECL_LANGUAGE (decl, lang_c);
5448 /* Should probably propagate const out from type to decl I bet (mrs). */
5451 DECL_STATIC_FUNCTION_P (decl) = 1;
5452 DECL_CONTEXT (decl) = ctype;
5456 DECL_CONTEXT (decl) = ctype;
5458 if (ctype == NULL_TREE && DECL_MAIN_P (decl))
5460 if (processing_template_decl)
5461 error ("cannot declare `::main' to be a template");
5463 error ("cannot declare `::main' to be inline");
5465 error ("cannot declare `::main' to be static");
5466 if (!same_type_p (TREE_TYPE (TREE_TYPE (decl)),
5468 error ("`main' must return `int'");
5473 /* Members of anonymous types and local classes have no linkage; make
5474 them internal. If a typedef is made later, this will be changed. */
5475 if (ctype && (TYPE_ANONYMOUS_P (ctype)
5476 || decl_function_context (TYPE_MAIN_DECL (ctype))))
5481 /* [basic.link]: A name with no linkage (notably, the name of a class
5482 or enumeration declared in a local scope) shall not be used to
5483 declare an entity with linkage.
5485 Only check this for public decls for now. See core 319, 389. */
5486 t = no_linkage_check (TREE_TYPE (decl),
5487 /*relaxed_p=*/false);
5490 if (TYPE_ANONYMOUS_P (t))
5492 if (DECL_EXTERN_C_P (decl))
5493 /* Allow this; it's pretty common in C. */;
5496 pedwarn ("non-local function `%#D' uses anonymous type",
5498 if (DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
5500 `%#D' does not refer to the unqualified type, so it is not used for linkage",
5505 pedwarn ("non-local function `%#D' uses local type `%T'",
5510 TREE_PUBLIC (decl) = publicp;
5513 DECL_INTERFACE_KNOWN (decl) = 1;
5514 DECL_NOT_REALLY_EXTERN (decl) = 1;
5517 /* If the declaration was declared inline, mark it as such. */
5519 DECL_DECLARED_INLINE_P (decl) = 1;
5520 /* We inline functions that are explicitly declared inline, or, when
5521 the user explicitly asks us to, all functions. */
5522 if (DECL_DECLARED_INLINE_P (decl)
5523 || (flag_inline_trees == 2 && !DECL_INLINE (decl) && funcdef_flag))
5524 DECL_INLINE (decl) = 1;
5526 DECL_EXTERNAL (decl) = 1;
5527 if (quals && TREE_CODE (type) == FUNCTION_TYPE)
5529 error ("%smember function `%D' cannot have cv-qualifier",
5530 (ctype ? "static " : "non-"), decl);
5531 quals = TYPE_UNQUALIFIED;
5534 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl)))
5535 grok_op_properties (decl, friendp, /*complain=*/true);
5537 if (ctype && decl_function_context (decl))
5538 DECL_NO_STATIC_CHAIN (decl) = 1;
5540 for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t))
5541 if (TREE_PURPOSE (t)
5542 && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
5544 has_default_arg = 1;
5549 && TREE_CODE (orig_declarator) == TEMPLATE_ID_EXPR)
5553 ("defining explicit specialization `%D' in friend declaration",
5557 tree fns = TREE_OPERAND (orig_declarator, 0);
5558 tree args = TREE_OPERAND (orig_declarator, 1);
5560 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
5562 /* Something like `template <class T> friend void f<T>()'. */
5563 error ("invalid use of template-id `%D' in declaration of primary template",
5569 /* A friend declaration of the form friend void f<>(). Record
5570 the information in the TEMPLATE_ID_EXPR. */
5571 SET_DECL_IMPLICIT_INSTANTIATION (decl);
5573 if (TREE_CODE (fns) == COMPONENT_REF)
5575 /* Due to bison parser ickiness, we will have already looked
5576 up an operator_name or PFUNCNAME within the current class
5577 (see template_id in parse.y). If the current class contains
5578 such a name, we'll get a COMPONENT_REF here. Undo that. */
5580 my_friendly_assert (TREE_TYPE (TREE_OPERAND (fns, 0))
5581 == current_class_type, 20001120);
5582 fns = TREE_OPERAND (fns, 1);
5584 my_friendly_assert (TREE_CODE (fns) == IDENTIFIER_NODE
5585 || TREE_CODE (fns) == OVERLOAD, 20001120);
5586 DECL_TEMPLATE_INFO (decl) = tree_cons (fns, args, NULL_TREE);
5588 if (has_default_arg)
5590 error ("default arguments are not allowed in declaration of friend template specialization `%D'",
5597 error ("`inline' is not allowed in declaration of friend template specialization `%D'",
5605 /* Make the init_value nonzero so pushdecl knows this is not
5606 tentative. error_mark_node is replaced later with the BLOCK. */
5607 DECL_INITIAL (decl) = error_mark_node;
5609 if (TYPE_NOTHROW_P (type) || nothrow_libfn_p (decl))
5610 TREE_NOTHROW (decl) = 1;
5612 /* Caller will do the rest of this. */
5616 if (flags == NO_SPECIAL && ctype && constructor_name_p (declarator, ctype))
5617 DECL_CONSTRUCTOR_P (decl) = 1;
5619 /* Function gets the ugly name, field gets the nice one. This call
5620 may change the type of the function (because of default
5622 if (ctype != NULL_TREE)
5623 grokclassfn (ctype, decl, flags, quals);
5625 decl = check_explicit_specialization (orig_declarator, decl,
5627 2 * (funcdef_flag != 0) +
5628 4 * (friendp != 0));
5629 if (decl == error_mark_node)
5632 if (ctype != NULL_TREE
5633 && (! TYPE_FOR_JAVA (ctype) || check_java_method (decl))
5638 old_decl = check_classfn (ctype, decl,
5639 (processing_template_decl
5640 > template_class_depth (ctype))
5641 ? current_template_parms
5644 if (old_decl && TREE_CODE (old_decl) == TEMPLATE_DECL)
5645 /* Because grokfndecl is always supposed to return a
5646 FUNCTION_DECL, we pull out the DECL_TEMPLATE_RESULT
5647 here. We depend on our callers to figure out that its
5648 really a template that's being returned. */
5649 old_decl = DECL_TEMPLATE_RESULT (old_decl);
5651 if (old_decl && DECL_STATIC_FUNCTION_P (old_decl)
5652 && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
5653 /* Remove the `this' parm added by grokclassfn.
5654 XXX Isn't this done in start_function, too? */
5655 revert_static_member_fn (decl);
5656 if (old_decl && DECL_ARTIFICIAL (old_decl))
5657 error ("definition of implicitly-declared `%D'", old_decl);
5664 /* Since we've smashed OLD_DECL to its
5665 DECL_TEMPLATE_RESULT, we must do the same to DECL. */
5666 if (TREE_CODE (decl) == TEMPLATE_DECL)
5667 decl = DECL_TEMPLATE_RESULT (decl);
5669 /* Attempt to merge the declarations. This can fail, in
5670 the case of some invalid specialization declarations. */
5671 pop_p = push_scope (ctype);
5672 ok = duplicate_decls (decl, old_decl);
5677 error ("no `%#D' member function declared in class `%T'",
5685 if (DECL_CONSTRUCTOR_P (decl) && !grok_ctor_properties (ctype, decl))
5688 if (ctype == NULL_TREE || check)
5692 DECL_VIRTUAL_P (decl) = 1;
5697 /* DECL is a VAR_DECL for a static data member. Set flags to reflect
5698 the linkage that DECL will receive in the object file. */
5701 set_linkage_for_static_data_member (tree decl)
5703 /* A static data member always has static storage duration and
5704 external linkage. Note that static data members are forbidden in
5705 local classes -- the only situation in which a class has
5706 non-external linkage. */
5707 TREE_PUBLIC (decl) = 1;
5708 TREE_STATIC (decl) = 1;
5709 /* For non-template classes, static data members are always put
5710 out in exactly those files where they are defined, just as
5711 with ordinarly namespace-scope variables. */
5712 if (!processing_template_decl)
5713 DECL_INTERFACE_KNOWN (decl) = 1;
5716 /* Create a VAR_DECL named NAME with the indicated TYPE.
5718 If SCOPE is non-NULL, it is the class type or namespace containing
5719 the variable. If SCOPE is NULL, the variable should is created in
5720 the innermost enclosings scope. */
5723 grokvardecl (tree type,
5725 const cp_decl_specifier_seq *declspecs,
5732 my_friendly_assert (!name || TREE_CODE (name) == IDENTIFIER_NODE,
5735 /* Compute the scope in which to place the variable. */
5738 /* An explicit "extern" specifier indicates a namespace-scope
5740 if (declspecs->storage_class == sc_extern)
5741 scope = current_namespace;
5742 else if (!at_function_scope_p ())
5744 scope = current_scope ();
5746 scope = current_namespace;
5751 && (/* If the variable is a namespace-scope variable declared in a
5752 template, we need DECL_LANG_SPECIFIC. */
5753 (TREE_CODE (scope) == NAMESPACE_DECL && processing_template_decl)
5754 /* Similarly for namespace-scope variables with language linkage
5756 || (TREE_CODE (scope) == NAMESPACE_DECL
5757 && current_lang_name != lang_name_cplusplus)
5758 /* Similarly for static data members. */
5760 decl = build_lang_decl (VAR_DECL, name, type);
5762 decl = build_decl (VAR_DECL, name, type);
5764 if (scope && TREE_CODE (scope) == NAMESPACE_DECL)
5765 set_decl_namespace (decl, scope, 0);
5767 DECL_CONTEXT (decl) = scope;
5769 if (declspecs->storage_class == sc_extern)
5771 DECL_THIS_EXTERN (decl) = 1;
5772 DECL_EXTERNAL (decl) = !initialized;
5775 if (DECL_CLASS_SCOPE_P (decl))
5777 set_linkage_for_static_data_member (decl);
5778 /* This function is only called with out-of-class definitions. */
5779 DECL_EXTERNAL (decl) = 0;
5781 /* At top level, either `static' or no s.c. makes a definition
5782 (perhaps tentative), and absence of `static' makes it public. */
5783 else if (toplevel_bindings_p ())
5785 TREE_PUBLIC (decl) = (declspecs->storage_class != sc_static
5786 && (DECL_THIS_EXTERN (decl) || ! constp));
5787 TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
5789 /* Not at top level, only `static' makes a static definition. */
5792 TREE_STATIC (decl) = declspecs->storage_class == sc_static;
5793 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
5796 if (declspecs->specs[(int)ds_thread])
5798 if (targetm.have_tls)
5799 DECL_THREAD_LOCAL (decl) = 1;
5801 /* A mere warning is sure to result in improper semantics
5802 at runtime. Don't bother to allow this to compile. */
5803 error ("thread-local storage not supported for this target");
5806 if (TREE_PUBLIC (decl))
5808 /* [basic.link]: A name with no linkage (notably, the name of a class
5809 or enumeration declared in a local scope) shall not be used to
5810 declare an entity with linkage.
5812 Only check this for public decls for now. */
5813 tree t = no_linkage_check (TREE_TYPE (decl),
5814 /*relaxed_p=*/false);
5817 if (TYPE_ANONYMOUS_P (t))
5819 if (DECL_EXTERN_C_P (decl))
5820 /* Allow this; it's pretty common in C. */;
5823 pedwarn ("non-local variable `%#D' uses anonymous type",
5825 if (DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
5827 `%#D' does not refer to the unqualified type, so it is not used for linkage",
5832 pedwarn ("non-local variable `%#D' uses local type `%T'",
5840 /* Create and return a canonical pointer to member function type, for
5841 TYPE, which is a POINTER_TYPE to a METHOD_TYPE. */
5844 build_ptrmemfunc_type (tree type)
5848 tree unqualified_variant = NULL_TREE;
5850 if (type == error_mark_node)
5853 /* If a canonical type already exists for this type, use it. We use
5854 this method instead of type_hash_canon, because it only does a
5855 simple equality check on the list of field members. */
5857 if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
5860 /* Make sure that we always have the unqualified pointer-to-member
5862 if (cp_type_quals (type) != TYPE_UNQUALIFIED)
5864 = build_ptrmemfunc_type (TYPE_MAIN_VARIANT (type));
5866 t = make_aggr_type (RECORD_TYPE);
5867 xref_basetypes (t, NULL_TREE);
5869 /* Let the front-end know this is a pointer to member function... */
5870 TYPE_PTRMEMFUNC_FLAG (t) = 1;
5871 /* ... and not really an aggregate. */
5872 SET_IS_AGGR_TYPE (t, 0);
5874 field = build_decl (FIELD_DECL, pfn_identifier, type);
5877 field = build_decl (FIELD_DECL, delta_identifier, delta_type_node);
5878 TREE_CHAIN (field) = fields;
5881 finish_builtin_struct (t, "__ptrmemfunc_type", fields, ptr_type_node);
5883 /* Zap out the name so that the back-end will give us the debugging
5884 information for this anonymous RECORD_TYPE. */
5885 TYPE_NAME (t) = NULL_TREE;
5887 /* If this is not the unqualified form of this pointer-to-member
5888 type, set the TYPE_MAIN_VARIANT for this type to be the
5889 unqualified type. Since they are actually RECORD_TYPEs that are
5890 not variants of each other, we must do this manually. */
5891 if (cp_type_quals (type) != TYPE_UNQUALIFIED)
5893 t = build_qualified_type (t, cp_type_quals (type));
5894 TYPE_MAIN_VARIANT (t) = unqualified_variant;
5895 TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (unqualified_variant);
5896 TYPE_NEXT_VARIANT (unqualified_variant) = t;
5899 /* Cache this pointer-to-member type so that we can find it again
5901 TYPE_SET_PTRMEMFUNC_TYPE (type, t);
5906 /* Create and return a pointer to data member type. */
5909 build_ptrmem_type (tree class_type, tree member_type)
5911 if (TREE_CODE (member_type) == METHOD_TYPE)
5915 arg_types = TYPE_ARG_TYPES (member_type);
5916 class_type = (cp_build_qualified_type
5918 cp_type_quals (TREE_TYPE (TREE_VALUE (arg_types)))));
5920 = build_method_type_directly (class_type,
5921 TREE_TYPE (member_type),
5922 TREE_CHAIN (arg_types));
5923 return build_ptrmemfunc_type (build_pointer_type (member_type));
5927 my_friendly_assert (TREE_CODE (member_type) != FUNCTION_TYPE,
5929 return build_offset_type (class_type, member_type);
5933 /* DECL is a VAR_DECL defined in-class, whose TYPE is also given.
5934 Check to see that the definition is valid. Issue appropriate error
5935 messages. Return 1 if the definition is particularly bad, or 0
5939 check_static_variable_definition (tree decl, tree type)
5941 /* Motion 10 at San Diego: If a static const integral data member is
5942 initialized with an integral constant expression, the initializer
5943 may appear either in the declaration (within the class), or in
5944 the definition, but not both. If it appears in the class, the
5945 member is a member constant. The file-scope definition is always
5947 if (!ARITHMETIC_TYPE_P (type) && TREE_CODE (type) != ENUMERAL_TYPE)
5949 error ("invalid in-class initialization of static data member of non-integral type `%T'",
5951 /* If we just return the declaration, crashes will sometimes
5952 occur. We therefore return void_type_node, as if this were a
5953 friend declaration, to cause callers to completely ignore
5954 this declaration. */
5957 else if (!CP_TYPE_CONST_P (type))
5958 error ("ISO C++ forbids in-class initialization of non-const static member `%D'",
5960 else if (pedantic && !INTEGRAL_TYPE_P (type))
5961 pedwarn ("ISO C++ forbids initialization of member constant `%D' of non-integral type `%T'", decl, type);
5966 /* Given the SIZE (i.e., number of elements) in an array, compute an
5967 appropriate index type for the array. If non-NULL, NAME is the
5968 name of the thing being declared. */
5971 compute_array_index_type (tree name, tree size)
5973 tree type = TREE_TYPE (size);
5976 /* The array bound must be an integer type. */
5977 if (!dependent_type_p (type) && !INTEGRAL_TYPE_P (type))
5980 error ("size of array `%D' has non-integral type `%T'", name, type);
5982 error ("size of array has non-integral type `%T'", type);
5983 size = integer_one_node;
5984 type = TREE_TYPE (size);
5987 if (abi_version_at_least (2)
5988 /* We should only handle value dependent expressions specially. */
5989 ? value_dependent_expression_p (size)
5990 /* But for abi-1, we handled all instances in templates. This
5991 effects the manglings produced. */
5992 : processing_template_decl)
5993 return build_index_type (build_min (MINUS_EXPR, sizetype,
5994 size, integer_one_node));
5996 /* The size might be the result of a cast. */
5997 STRIP_TYPE_NOPS (size);
5999 /* It might be a const variable or enumeration constant. */
6000 size = decl_constant_value (size);
6002 /* Normally, the array-bound will be a constant. */
6003 if (TREE_CODE (size) == INTEGER_CST)
6005 /* Check to see if the array bound overflowed. Make that an
6006 error, no matter how generous we're being. */
6007 int old_flag_pedantic_errors = flag_pedantic_errors;
6008 int old_pedantic = pedantic;
6009 pedantic = flag_pedantic_errors = 1;
6010 constant_expression_warning (size);
6011 pedantic = old_pedantic;
6012 flag_pedantic_errors = old_flag_pedantic_errors;
6014 /* An array must have a positive number of elements. */
6015 if (INT_CST_LT (size, integer_zero_node))
6018 error ("size of array `%D' is negative", name);
6020 error ("size of array is negative");
6021 size = integer_one_node;
6023 /* As an extension we allow zero-sized arrays. We always allow
6024 them in system headers because glibc uses them. */
6025 else if (integer_zerop (size) && pedantic && !in_system_header)
6028 pedwarn ("ISO C++ forbids zero-size array `%D'", name);
6030 pedwarn ("ISO C++ forbids zero-size array");
6033 else if (TREE_CONSTANT (size))
6035 /* `(int) &fn' is not a valid array bound. */
6037 error ("size of array `%D' is not an integral constant-expression",
6040 error ("size of array is not an integral constant-expression");
6045 pedwarn ("ISO C++ forbids variable-size array `%D'", name);
6047 pedwarn ("ISO C++ forbids variable-size array");
6050 if (processing_template_decl && !TREE_CONSTANT (size))
6051 /* A variable sized array. */
6052 itype = build_min (MINUS_EXPR, sizetype, size, integer_one_node);
6055 /* Compute the index of the largest element in the array. It is
6056 one less than the number of elements in the array. */
6058 = fold (cp_build_binary_op (MINUS_EXPR,
6059 cp_convert (ssizetype, size),
6060 cp_convert (ssizetype, integer_one_node)));
6061 if (!TREE_CONSTANT (itype))
6062 /* A variable sized array. */
6063 itype = variable_size (itype);
6064 /* Make sure that there was no overflow when creating to a signed
6065 index type. (For example, on a 32-bit machine, an array with
6066 size 2^32 - 1 is too big.) */
6067 else if (TREE_OVERFLOW (itype))
6069 error ("overflow in array dimension");
6070 TREE_OVERFLOW (itype) = 0;
6074 /* Create and return the appropriate index type. */
6075 return build_index_type (itype);
6078 /* Returns the scope (if any) in which the entity declared by
6079 DECLARATOR will be located. If the entity was declared with an
6080 unqualified name, NULL_TREE is returned. */
6083 get_scope_of_declarator (const cp_declarator *declarator)
6085 while (declarator && declarator->kind != cdk_id)
6086 declarator = declarator->declarator;
6088 /* If the declarator-id is a SCOPE_REF, the scope in which the
6089 declaration occurs is the first operand. */
6091 && declarator->u.id.name
6092 && TREE_CODE (declarator->u.id.name) == SCOPE_REF)
6093 return TREE_OPERAND (declarator->u.id.name, 0);
6095 /* Otherwise, the declarator is not a quablified name; the entity will
6096 be declared in the current scope. */
6100 /* Returns an ARRAY_TYPE for an array with SIZE elements of the
6101 indicated TYPE. If non-NULL, NAME is the NAME of the declaration
6105 create_array_type_for_decl (tree name, tree type, tree size)
6107 tree itype = NULL_TREE;
6108 const char* error_msg;
6110 /* If things have already gone awry, bail now. */
6111 if (type == error_mark_node || size == error_mark_node)
6112 return error_mark_node;
6114 /* Assume that everything will go OK. */
6117 /* There are some types which cannot be array elements. */
6118 switch (TREE_CODE (type))
6121 error_msg = "array of void";
6125 error_msg = "array of functions";
6128 case REFERENCE_TYPE:
6129 error_msg = "array of references";
6133 error_msg = "array of function members";
6140 /* If something went wrong, issue an error-message and return. */
6144 error ("declaration of `%D' as %s", name, error_msg);
6146 error ("creating %s", error_msg);
6148 return error_mark_node;
6153 The constant expressions that specify the bounds of the arrays
6154 can be omitted only for the first member of the sequence. */
6155 if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type))
6158 error ("declaration of `%D' as multidimensional array must have bounds for all dimensions except the first",
6161 error ("multidimensional array must have bounds for all dimensions except the first");
6163 return error_mark_node;
6166 /* Figure out the index type for the array. */
6168 itype = compute_array_index_type (name, size);
6171 T is called the array element type; this type shall not be [...] an
6172 abstract class type. */
6173 abstract_virtuals_error (name, type);
6175 return build_cplus_array_type (type, itype);
6178 /* Check that it's OK to declare a function with the indicated TYPE.
6179 SFK indicates the kind of special function (if any) that this
6180 function is. OPTYPE is the type given in a conversion operator
6181 declaration, or the class type for a constructor/destructor.
6182 Returns the actual return type of the function; that
6183 may be different than TYPE if an error occurs, or for certain
6184 special functions. */
6187 check_special_function_return_type (special_function_kind sfk,
6193 case sfk_constructor:
6195 error ("return type specification for constructor invalid");
6197 if (targetm.cxx.cdtor_returns_this () && !TYPE_FOR_JAVA (optype))
6198 type = build_pointer_type (optype);
6200 type = void_type_node;
6203 case sfk_destructor:
6205 error ("return type specification for destructor invalid");
6206 /* We can't use the proper return type here because we run into
6207 problems with abiguous bases and covariant returns.
6208 Java classes are left unchanged because (void *) isn't a valid
6209 Java type, and we don't want to change the Java ABI. */
6210 if (targetm.cxx.cdtor_returns_this () && !TYPE_FOR_JAVA (optype))
6211 type = build_pointer_type (void_type_node);
6213 type = void_type_node;
6216 case sfk_conversion:
6217 if (type && !same_type_p (type, optype))
6218 error ("operator `%T' declared to return `%T'", optype, type);
6220 pedwarn ("return type specified for `operator %T'", optype);
6232 /* Given declspecs and a declarator (abstract or otherwise), determine
6233 the name and type of the object declared and construct a DECL node
6236 DECLSPECS is a chain of tree_list nodes whose value fields
6237 are the storage classes and type specifiers.
6239 DECL_CONTEXT says which syntactic context this declaration is in:
6240 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
6241 FUNCDEF for a function definition. Like NORMAL but a few different
6242 error messages in each case. Return value may be zero meaning
6243 this definition is too screwy to try to parse.
6244 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
6245 handle member functions (which have FIELD context).
6246 Return value may be zero meaning this definition is too screwy to
6248 PARM for a parameter declaration (either within a function prototype
6249 or before a function body). Make a PARM_DECL, or return void_type_node.
6250 CATCHPARM for a parameter declaration before a catch clause.
6251 TYPENAME if for a typename (in a cast or sizeof).
6252 Don't make a DECL node; just return the ..._TYPE node.
6253 FIELD for a struct or union field; make a FIELD_DECL.
6254 BITFIELD for a field with specified width.
6255 INITIALIZED is 1 if the decl has an initializer.
6257 ATTRLIST is a pointer to the list of attributes, which may be NULL
6258 if there are none; *ATTRLIST may be modified if attributes from inside
6259 the declarator should be applied to the declaration.
6261 When this function is called, scoping variables (such as
6262 CURRENT_CLASS_TYPE) should reflect the scope in which the
6263 declaration occurs, not the scope in which the new declaration will
6264 be placed. For example, on:
6268 when grokdeclarator is called for `S::f', the CURRENT_CLASS_TYPE
6269 should not be `S'. */
6272 grokdeclarator (const cp_declarator *declarator,
6273 const cp_decl_specifier_seq *declspecs,
6274 enum decl_context decl_context,
6278 tree type = NULL_TREE;
6281 int virtualp, explicitp, friendp, inlinep, staticp;
6282 int explicit_int = 0;
6283 int explicit_char = 0;
6284 int defaulted_int = 0;
6285 tree dependant_name = NULL_TREE;
6287 tree typedef_decl = NULL_TREE;
6288 const char *name = NULL;
6289 tree typedef_type = NULL_TREE;
6290 int funcdef_flag = 0;
6291 cp_declarator_kind innermost_code = cdk_error;
6294 /* See the code below that used this. */
6295 tree decl_attr = NULL_TREE;
6298 /* Keep track of what sort of function is being processed
6299 so that we can warn about default return values, or explicit
6300 return values which do not match prescribed defaults. */
6301 special_function_kind sfk = sfk_none;
6303 tree dname = NULL_TREE;
6304 tree ctor_return_type = NULL_TREE;
6305 enum overload_flags flags = NO_SPECIAL;
6306 cp_cv_quals quals = TYPE_UNQUALIFIED;
6307 tree raises = NULL_TREE;
6308 int template_count = 0;
6309 tree returned_attrs = NULL_TREE;
6310 tree parms = NULL_TREE;
6311 const cp_declarator *id_declarator;
6312 /* The unqualified name of the declarator; either an
6313 IDENTIFIER_NODE, BIT_NOT_EXPR, or TEMPLATE_ID_EXPR. */
6314 tree unqualified_id;
6315 /* The class type, if any, in which this entity is located,
6316 or NULL_TREE if none. Note that this value may be different from
6317 the current class type; for example if an attempt is made to declare
6318 "A::f" inside "B", this value will be "A". */
6319 tree ctype = current_class_type;
6320 /* The NAMESPACE_DECL for the namespace in which this entity is
6321 located. If an unqualified name is used to declare the entity,
6322 this value will be NULL_TREE, even if the entity is located at
6324 tree in_namespace = NULL_TREE;
6326 cp_storage_class storage_class;
6327 bool unsigned_p, signed_p, short_p, long_p, thread_p;
6329 signed_p = declspecs->specs[(int)ds_signed];
6330 unsigned_p = declspecs->specs[(int)ds_unsigned];
6331 short_p = declspecs->specs[(int)ds_short];
6332 long_p = declspecs->specs[(int)ds_long];
6333 thread_p = declspecs->specs[(int)ds_thread];
6335 if (decl_context == FUNCDEF)
6336 funcdef_flag = 1, decl_context = NORMAL;
6337 else if (decl_context == MEMFUNCDEF)
6338 funcdef_flag = -1, decl_context = FIELD;
6339 else if (decl_context == BITFIELD)
6340 bitfield = 1, decl_context = FIELD;
6342 /* Look inside a declarator for the name being declared
6343 and get it as a string, for an error message. */
6344 for (id_declarator = declarator;
6346 id_declarator = id_declarator->declarator)
6348 if (id_declarator->kind != cdk_id)
6349 innermost_code = id_declarator->kind;
6351 switch (id_declarator->kind)
6354 if (id_declarator->declarator
6355 && id_declarator->declarator->kind == cdk_id)
6357 sfk = id_declarator->declarator->u.id.sfk;
6358 if (sfk == sfk_destructor)
6365 tree decl = id_declarator->u.id.name;
6368 if (TREE_CODE (decl) == SCOPE_REF)
6370 tree qualifying_scope = TREE_OPERAND (decl, 0);
6372 /* It is valid to write:
6374 class C { void f(); };
6378 The standard is not clear about whether `typedef const C D' is
6379 legal; as of 2002-09-15 the committee is considering
6380 that question. EDG 3.0 allows that syntax.
6381 Therefore, we do as well. */
6382 if (qualifying_scope && TYPE_P (qualifying_scope))
6384 ctype = TYPE_MAIN_VARIANT (qualifying_scope);
6385 if (innermost_code != cdk_function
6386 && current_class_type
6387 && !UNIQUELY_DERIVED_FROM_P (ctype,
6388 current_class_type))
6390 error ("type `%T' is not derived from type `%T'",
6391 ctype, current_class_type);
6394 TREE_OPERAND (decl, 0) = ctype;
6396 else if (TREE_CODE (qualifying_scope) == NAMESPACE_DECL)
6397 in_namespace = qualifying_scope;
6398 decl = TREE_OPERAND (decl, 1);
6400 if (TREE_CODE (decl) == BASELINK)
6401 decl = BASELINK_FUNCTIONS (decl);
6402 if (decl == error_mark_node)
6403 return error_mark_node;
6404 switch (TREE_CODE (decl))
6408 tree type = TREE_OPERAND (decl, 0);
6409 type = constructor_name (type);
6410 name = IDENTIFIER_POINTER (type);
6414 case TEMPLATE_ID_EXPR:
6416 tree fns = TREE_OPERAND (decl, 0);
6419 if (TREE_CODE (dname) == COMPONENT_REF)
6420 dname = TREE_OPERAND (dname, 1);
6421 if (TREE_CODE (dname) != IDENTIFIER_NODE)
6423 my_friendly_assert (is_overloaded_fn (dname),
6425 dname = DECL_NAME (get_first_fn (dname));
6430 case IDENTIFIER_NODE:
6431 if (TREE_CODE (decl) == IDENTIFIER_NODE)
6434 if (C_IS_RESERVED_WORD (dname))
6436 error ("declarator-id missing; using reserved word `%D'",
6438 name = IDENTIFIER_POINTER (dname);
6440 else if (!IDENTIFIER_TYPENAME_P (dname))
6441 name = IDENTIFIER_POINTER (dname);
6444 my_friendly_assert (flags == NO_SPECIAL, 154);
6445 flags = TYPENAME_FLAG;
6446 ctor_return_type = TREE_TYPE (dname);
6447 sfk = sfk_conversion;
6448 if (is_typename_at_global_scope (dname))
6449 name = IDENTIFIER_POINTER (dname);
6451 name = "<invalid operator>";
6456 dname = constructor_name (TREE_TYPE (decl));
6457 name = IDENTIFIER_POINTER (dname);
6478 if (id_declarator->kind == cdk_id)
6482 /* A function definition's declarator must have the form of
6483 a function declarator. */
6485 if (funcdef_flag && innermost_code != cdk_function)
6488 if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
6489 && innermost_code != cdk_function
6490 && ! (ctype && !declspecs->any_specifiers_p))
6492 error ("declaration of `%D' as non-function", dname);
6493 return void_type_node;
6496 /* Anything declared one level down from the top level
6497 must be one of the parameters of a function
6498 (because the body is at least two levels down). */
6500 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
6501 by not allowing C++ class definitions to specify their parameters
6502 with xdecls (must be spec.d in the parmlist).
6504 Since we now wait to push a class scope until we are sure that
6505 we are in a legitimate method context, we must set oldcname
6506 explicitly (since current_class_name is not yet alive).
6508 We also want to avoid calling this a PARM if it is in a namespace. */
6510 if (decl_context == NORMAL && !toplevel_bindings_p ())
6512 struct cp_binding_level *b = current_binding_level;
6513 current_binding_level = b->level_chain;
6514 if (current_binding_level != 0 && toplevel_bindings_p ())
6515 decl_context = PARM;
6516 current_binding_level = b;
6520 name = decl_context == PARM ? "parameter" : "type name";
6522 /* If there were multiple types specified in the decl-specifier-seq,
6523 issue an error message. */
6524 if (declspecs->multiple_types_p)
6525 error ("two or more data types in declaration of `%s'", name);
6526 /* Extract the basic type from the decl-specifier-seq. */
6527 type = declspecs->type;
6528 if (type == error_mark_node)
6530 /* If the entire declaration is itself tagged as deprecated then
6531 suppress reports of deprecated items. */
6532 if (type && TREE_DEPRECATED (type)
6533 && deprecated_state != DEPRECATED_SUPPRESS)
6534 warn_deprecated_use (type);
6535 if (type && TREE_CODE (type) == TYPE_DECL)
6537 typedef_decl = type;
6538 type = TREE_TYPE (typedef_decl);
6540 /* No type at all: default to `int', and set DEFAULTED_INT
6541 because it was not a user-defined typedef. */
6542 if (type == NULL_TREE && (signed_p || unsigned_p || long_p || short_p))
6544 /* These imply 'int'. */
6545 type = integer_type_node;
6549 explicit_int = declspecs->explicit_int_p;
6550 explicit_char = declspecs->explicit_char_p;
6552 /* Check for repeated decl-specifiers. */
6553 for (ds = ds_first; ds != ds_last; ++ds)
6555 unsigned count = declspecs->specs[(int)ds];
6558 /* The "long" specifier is a special case because of
6563 error ("`long long long' is too long for GCC");
6564 else if (pedantic && !in_system_header && warn_long_long)
6565 pedwarn ("ISO C++ does not support `long long'");
6569 else if (declspecs->specs[(int)ds] > 1)
6571 static const char *const decl_spec_names[] = {
6587 error ("duplicate `%s'", decl_spec_names[(int)ds]);
6592 /* See the code below that used this. */
6594 decl_attr = DECL_ATTRIBUTES (typedef_decl);
6596 typedef_type = type;
6599 if (sfk != sfk_conversion)
6600 ctor_return_type = ctype;
6602 if (sfk != sfk_none)
6603 type = check_special_function_return_type (sfk, type,
6605 else if (type == NULL_TREE)
6611 /* We handle `main' specially here, because 'main () { }' is so
6612 common. With no options, it is allowed. With -Wreturn-type,
6613 it is a warning. It is only an error with -pedantic-errors. */
6614 is_main = (funcdef_flag
6615 && dname && MAIN_NAME_P (dname)
6616 && ctype == NULL_TREE
6617 && in_namespace == NULL_TREE
6618 && current_namespace == global_namespace);
6620 if (in_system_header || flag_ms_extensions)
6621 /* Allow it, sigh. */;
6622 else if (pedantic || ! is_main)
6623 pedwarn ("ISO C++ forbids declaration of `%s' with no type",
6625 else if (warn_return_type)
6626 warning ("ISO C++ forbids declaration of `%s' with no type",
6629 type = integer_type_node;
6634 /* Now process the modifiers that were specified
6635 and check for invalid combinations. */
6637 /* Long double is a special combination. */
6638 if (long_p && TYPE_MAIN_VARIANT (type) == double_type_node)
6641 type = build_qualified_type (long_double_type_node,
6642 cp_type_quals (type));
6645 /* Check all other uses of type modifiers. */
6647 if (unsigned_p || signed_p || long_p || short_p)
6651 if (TREE_CODE (type) == REAL_TYPE)
6652 error ("short, signed or unsigned invalid for `%s'", name);
6653 else if (TREE_CODE (type) != INTEGER_TYPE)
6654 error ("long, short, signed or unsigned invalid for `%s'", name);
6655 else if (long_p && short_p)
6656 error ("long and short specified together for `%s'", name);
6657 else if ((long_p || short_p) && explicit_char)
6658 error ("long or short specified with char for `%s'", name);
6659 else if ((long_p|| short_p) && TREE_CODE (type) == REAL_TYPE)
6660 error ("long or short specified with floating type for `%s'", name);
6661 else if (signed_p && unsigned_p)
6662 error ("signed and unsigned given together for `%s'", name);
6666 if (!explicit_int && !defaulted_int && !explicit_char && pedantic)
6668 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
6670 if (flag_pedantic_errors)
6675 /* Discard the type modifiers if they are invalid. */
6686 /* Decide whether an integer type is signed or not.
6687 Optionally treat bitfields as signed by default. */
6691 It is implementation-defined whether a plain (neither
6692 explicitly signed or unsigned) char, short, int, or long
6693 bit-field is signed or unsigned.
6695 Naturally, we extend this to long long as well. Note that
6696 this does not include wchar_t. */
6697 || (bitfield && !flag_signed_bitfields
6699 /* A typedef for plain `int' without `signed' can be
6700 controlled just like plain `int', but a typedef for
6701 `signed int' cannot be so controlled. */
6703 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl))
6704 && (TREE_CODE (type) == INTEGER_TYPE
6705 || TREE_CODE (type) == CHAR_TYPE)
6706 && !same_type_p (TYPE_MAIN_VARIANT (type), wchar_type_node)))
6709 type = long_long_unsigned_type_node;
6711 type = long_unsigned_type_node;
6713 type = short_unsigned_type_node;
6714 else if (type == char_type_node)
6715 type = unsigned_char_type_node;
6716 else if (typedef_decl)
6717 type = c_common_unsigned_type (type);
6719 type = unsigned_type_node;
6721 else if (signed_p && type == char_type_node)
6722 type = signed_char_type_node;
6724 type = long_long_integer_type_node;
6726 type = long_integer_type_node;
6728 type = short_integer_type_node;
6730 if (declspecs->specs[(int)ds_complex])
6732 if (TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE)
6733 error ("complex invalid for `%s'", name);
6734 /* If we just have "complex", it is equivalent to
6735 "complex double", but if any modifiers at all are specified it is
6736 the complex form of TYPE. E.g, "complex short" is
6737 "complex short int". */
6739 else if (defaulted_int && ! longlong
6740 && ! (long_p || short_p || signed_p || unsigned_p))
6741 type = complex_double_type_node;
6742 else if (type == integer_type_node)
6743 type = complex_integer_type_node;
6744 else if (type == float_type_node)
6745 type = complex_float_type_node;
6746 else if (type == double_type_node)
6747 type = complex_double_type_node;
6748 else if (type == long_double_type_node)
6749 type = complex_long_double_type_node;
6751 type = build_complex_type (type);
6754 type_quals = TYPE_UNQUALIFIED;
6755 if (declspecs->specs[(int)ds_const])
6756 type_quals |= TYPE_QUAL_CONST;
6757 if (declspecs->specs[(int)ds_volatile])
6758 type_quals |= TYPE_QUAL_VOLATILE;
6759 if (declspecs->specs[(int)ds_restrict])
6760 type_quals |= TYPE_QUAL_RESTRICT;
6761 if (sfk == sfk_conversion && type_quals != TYPE_UNQUALIFIED)
6762 error ("qualifiers are not allowed on declaration of `operator %T'",
6765 type_quals |= cp_type_quals (type);
6766 type = cp_build_qualified_type_real
6767 (type, type_quals, ((typedef_decl && !DECL_ARTIFICIAL (typedef_decl)
6768 ? tf_ignore_bad_quals : 0) | tf_error | tf_warning));
6769 /* We might have ignored or rejected some of the qualifiers. */
6770 type_quals = cp_type_quals (type);
6773 inlinep = !! declspecs->specs[(int)ds_inline];
6774 virtualp = !! declspecs->specs[(int)ds_virtual];
6775 explicitp = !! declspecs->specs[(int)ds_explicit];
6777 storage_class = declspecs->storage_class;
6778 if (storage_class == sc_static)
6779 staticp = 1 + (decl_context == FIELD);
6781 if (virtualp && staticp == 2)
6783 error ("member `%D' cannot be declared both virtual and static",
6787 friendp = !! declspecs->specs[(int)ds_friend];
6789 if (dependant_name && !friendp)
6791 error ("`%T::%D' is not a valid declarator", ctype, dependant_name);
6792 return void_type_node;
6795 /* Issue errors about use of storage classes for parameters. */
6796 if (decl_context == PARM)
6798 if (declspecs->specs[(int)ds_typedef])
6799 error ("typedef declaration invalid in parameter declaration");
6800 else if (storage_class == sc_static
6801 || storage_class == sc_extern
6803 error ("storage class specifiers invalid in parameter declarations");
6806 /* Give error if `virtual' is used outside of class declaration. */
6808 && (current_class_name == NULL_TREE || decl_context != FIELD))
6810 error ("virtual outside class declaration");
6814 /* Static anonymous unions are dealt with here. */
6815 if (staticp && decl_context == TYPENAME
6817 && ANON_AGGR_TYPE_P (declspecs->type))
6818 decl_context = FIELD;
6820 /* Warn about storage classes that are invalid for certain
6821 kinds of declarations (parameters, typenames, etc.). */
6822 if (declspecs->multiple_storage_classes_p)
6823 error ("multiple storage classes in declaration of `%s'", name);
6826 && storage_class != sc_extern
6827 && storage_class != sc_static)
6828 || declspecs->specs[(int)ds_typedef]))
6830 error ("multiple storage classes in declaration of `%s'", name);
6833 else if (decl_context != NORMAL
6834 && ((storage_class != sc_none
6835 && storage_class != sc_mutable)
6838 if ((decl_context == PARM || decl_context == CATCHPARM)
6839 && (storage_class == sc_register
6840 || storage_class == sc_auto))
6842 else if (declspecs->specs[(int)ds_typedef])
6844 else if (decl_context == FIELD
6845 /* C++ allows static class elements. */
6846 && storage_class == sc_static)
6847 /* C++ also allows inlines and signed and unsigned elements,
6848 but in those cases we don't come in here. */
6852 if (decl_context == FIELD)
6854 tree tmp = NULL_TREE;
6859 /* Avoid trying to get an operand off an identifier node. */
6860 if (declarator->kind != cdk_id)
6861 tmp = declarator->declarator->u.id.name;
6863 tmp = declarator->u.id.name;
6864 op = IDENTIFIER_OPNAME_P (tmp);
6865 if (IDENTIFIER_TYPENAME_P (tmp))
6867 if (is_typename_at_global_scope (tmp))
6868 name = IDENTIFIER_POINTER (tmp);
6870 name = "<invalid operator>";
6873 error ("storage class specified for %s `%s'",
6874 op ? "member operator" : "field",
6879 if (decl_context == PARM || decl_context == CATCHPARM)
6880 error ("storage class specified for parameter `%s'", name);
6882 error ("storage class specified for typename");
6884 if (storage_class == sc_register
6885 || storage_class == sc_auto
6886 || storage_class == sc_extern
6888 storage_class = sc_none;
6891 else if (storage_class == sc_extern && initialized
6894 if (toplevel_bindings_p ())
6896 /* It's common practice (and completely valid) to have a const
6897 be initialized and declared extern. */
6898 if (!(type_quals & TYPE_QUAL_CONST))
6899 warning ("`%s' initialized and declared `extern'", name);
6902 error ("`%s' has both `extern' and initializer", name);
6904 else if (storage_class == sc_extern && funcdef_flag
6905 && ! toplevel_bindings_p ())
6906 error ("nested function `%s' declared `extern'", name);
6907 else if (toplevel_bindings_p ())
6909 if (storage_class == sc_auto)
6910 error ("top-level declaration of `%s' specifies `auto'", name);
6913 && storage_class != sc_extern
6914 && storage_class != sc_static)
6916 error ("function-scope `%s' implicitly auto and declared `__thread'",
6921 if (storage_class && friendp)
6922 error ("storage class specifiers invalid in friend function declarations");
6925 unqualified_id = NULL_TREE;
6928 unqualified_id = id_declarator->u.id.name;
6929 if (TREE_CODE (unqualified_id) == SCOPE_REF)
6930 unqualified_id = TREE_OPERAND (unqualified_id, 1);
6931 if (TREE_CODE (unqualified_id) == BASELINK)
6932 unqualified_id = BASELINK_FUNCTIONS (unqualified_id);
6933 switch (TREE_CODE (unqualified_id))
6937 = constructor_name (TREE_OPERAND (unqualified_id, 0));
6942 = constructor_name (TREE_TYPE (unqualified_id));
6945 case IDENTIFIER_NODE:
6946 case TEMPLATE_ID_EXPR:
6954 /* Determine the type of the entity declared by recurring on the
6957 declarator && declarator->kind != cdk_id;
6958 declarator = declarator->declarator)
6960 const cp_declarator *inner_declarator;
6963 if (type == error_mark_node)
6964 return error_mark_node;
6966 inner_declarator = declarator->declarator;
6968 attrs = declarator->attributes;
6974 if (declarator == NULL || declarator->kind == cdk_id)
6975 attr_flags |= (int) ATTR_FLAG_DECL_NEXT;
6976 if (declarator->kind == cdk_function)
6977 attr_flags |= (int) ATTR_FLAG_FUNCTION_NEXT;
6978 if (declarator->kind == cdk_array)
6979 attr_flags |= (int) ATTR_FLAG_ARRAY_NEXT;
6980 returned_attrs = decl_attributes (&type,
6981 chainon (returned_attrs, attrs),
6985 switch (declarator->kind)
6988 type = create_array_type_for_decl (dname, type,
6989 declarator->u.array.bounds);
6990 if (inner_declarator
6991 && (inner_declarator->kind == cdk_pointer
6992 || inner_declarator->kind == cdk_reference
6993 || inner_declarator->kind == cdk_ptrmem))
6994 /* We can never complete an array type which is the
6995 target of a pointer, so go ahead and lay it out. */
7004 /* Declaring a function type.
7005 Make sure we have a valid type for the function to return. */
7007 /* We now know that the TYPE_QUALS don't apply to the
7008 decl, but to its return type. */
7009 type_quals = TYPE_UNQUALIFIED;
7011 /* Warn about some types functions can't return. */
7013 if (TREE_CODE (type) == FUNCTION_TYPE)
7015 error ("`%s' declared as function returning a function", name);
7016 type = integer_type_node;
7018 if (TREE_CODE (type) == ARRAY_TYPE)
7020 error ("`%s' declared as function returning an array", name);
7021 type = integer_type_node;
7024 /* Pick up type qualifiers which should be applied to `this'. */
7025 quals = declarator->u.function.qualifiers;
7027 /* Pick up the exception specifications. */
7028 raises = declarator->u.function.exception_specification;
7030 /* Say it's a definition only for the CALL_EXPR
7031 closest to the identifier. */
7032 funcdecl_p = inner_declarator && inner_declarator->kind == cdk_id;
7034 if (ctype == NULL_TREE
7035 && decl_context == FIELD
7037 && (friendp == 0 || dname == current_class_name))
7038 ctype = current_class_type;
7040 if (ctype && sfk == sfk_conversion)
7041 TYPE_HAS_CONVERSION (ctype) = 1;
7042 if (ctype && (sfk == sfk_constructor
7043 || sfk == sfk_destructor))
7045 /* We are within a class's scope. If our declarator name
7046 is the same as the class name, and we are defining
7047 a function, then it is a constructor/destructor, and
7048 therefore returns a void type. */
7050 if (flags == DTOR_FLAG)
7052 /* ISO C++ 12.4/2. A destructor may not be
7053 declared const or volatile. A destructor may
7056 error ("destructor cannot be static member function");
7059 error ("destructors may not be cv-qualified");
7060 quals = TYPE_UNQUALIFIED;
7062 if (decl_context == FIELD)
7064 if (! member_function_or_else (ctype,
7067 return void_type_node;
7070 else /* It's a constructor. */
7074 /* ISO C++ 12.1. A constructor may not be
7075 declared const or volatile. A constructor may
7076 not be virtual. A constructor may not be
7079 error ("constructor cannot be static member function");
7082 pedwarn ("constructors cannot be declared virtual");
7087 error ("constructors may not be cv-qualified");
7088 quals = TYPE_UNQUALIFIED;
7090 if (decl_context == FIELD)
7092 if (! member_function_or_else (ctype,
7095 return void_type_node;
7096 TYPE_HAS_CONSTRUCTOR (ctype) = 1;
7097 if (sfk != sfk_constructor)
7101 if (decl_context == FIELD)
7107 error ("can't initialize friend function `%s'", name);
7110 /* Cannot be both friend and virtual. */
7111 error ("virtual functions cannot be friends");
7114 if (decl_context == NORMAL)
7115 error ("friend declaration not in class definition");
7116 if (current_function_decl && funcdef_flag)
7117 error ("can't define friend function `%s' in a local class definition",
7121 arg_types = grokparms (declarator->u.function.parameters,
7124 if (inner_declarator
7125 && inner_declarator->kind == cdk_id
7126 && inner_declarator->u.id.sfk == sfk_destructor
7127 && arg_types != void_list_node)
7129 error ("destructors may not have parameters");
7130 arg_types = void_list_node;
7134 type = build_function_type (type, arg_types);
7141 /* Filter out pointers-to-references and references-to-references.
7142 We can get these if a TYPE_DECL is used. */
7144 if (TREE_CODE (type) == REFERENCE_TYPE)
7146 error (declarator->kind == cdk_reference
7147 ? "cannot declare reference to `%#T'"
7148 : "cannot declare pointer to `%#T'", type);
7149 type = TREE_TYPE (type);
7151 else if (VOID_TYPE_P (type))
7153 if (declarator->kind == cdk_reference)
7154 error ("cannot declare reference to `%#T'", type);
7155 else if (declarator->kind == cdk_ptrmem)
7156 error ("cannot declare pointer to `%#T' member", type);
7159 /* We now know that the TYPE_QUALS don't apply to the decl,
7160 but to the target of the pointer. */
7161 type_quals = TYPE_UNQUALIFIED;
7163 if (declarator->kind == cdk_ptrmem
7164 && (TREE_CODE (type) == FUNCTION_TYPE
7165 || (quals && TREE_CODE (type) == METHOD_TYPE)))
7167 tree dummy = build_decl (TYPE_DECL, NULL_TREE, type);
7168 grok_method_quals (declarator->u.pointer.class_type,
7170 type = TREE_TYPE (dummy);
7171 quals = TYPE_UNQUALIFIED;
7174 if (declarator->kind == cdk_reference)
7176 if (!VOID_TYPE_P (type))
7177 type = build_reference_type (type);
7179 else if (TREE_CODE (type) == METHOD_TYPE)
7180 type = build_ptrmemfunc_type (build_pointer_type (type));
7181 else if (declarator->kind == cdk_ptrmem)
7182 type = build_ptrmem_type (declarator->u.pointer.class_type,
7185 type = build_pointer_type (type);
7187 /* Process a list of type modifier keywords (such as
7188 const or volatile) that were given inside the `*' or `&'. */
7190 if (declarator->u.pointer.qualifiers)
7193 = cp_build_qualified_type (type,
7194 declarator->u.pointer.qualifiers);
7195 type_quals = cp_type_quals (type);
7208 if (unqualified_id && TREE_CODE (unqualified_id) == TEMPLATE_ID_EXPR
7209 && TREE_CODE (type) != FUNCTION_TYPE
7210 && TREE_CODE (type) != METHOD_TYPE)
7212 error ("template-id `%D' used as a declarator",
7214 unqualified_id = dname;
7217 /* If DECLARATOR is non-NULL, we know it is a cdk_id declarator;
7218 otherwise, we would not have exited the loop above. */
7220 && TREE_CODE (declarator->u.id.name) == SCOPE_REF
7221 /* If the qualifying scope was invalid, it will have been set to
7223 && TREE_OPERAND (declarator->u.id.name, 0)
7224 && TYPE_P (TREE_OPERAND (declarator->u.id.name, 0)))
7228 ctype = TREE_OPERAND (declarator->u.id.name, 0);
7230 ctype = TYPE_MAIN_VARIANT (ctype);
7232 while (t != NULL_TREE && CLASS_TYPE_P (t))
7234 /* You're supposed to have one `template <...>' for every
7235 template class, but you don't need one for a full
7236 specialization. For example:
7238 template <class T> struct S{};
7239 template <> struct S<int> { void f(); };
7240 void S<int>::f () {}
7242 is correct; there shouldn't be a `template <>' for the
7243 definition of `S<int>::f'. */
7244 if (CLASSTYPE_TEMPLATE_INFO (t)
7245 && (CLASSTYPE_TEMPLATE_INSTANTIATION (t)
7246 || uses_template_parms (CLASSTYPE_TI_ARGS (t)))
7247 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t)))
7248 template_count += 1;
7250 t = TYPE_MAIN_DECL (t);
7251 t = DECL_CONTEXT (t);
7254 if (ctype == current_class_type)
7260 Is this ill-formed? */
7263 pedwarn ("extra qualification `%T::' on member `%s' ignored",
7266 else if (TREE_CODE (type) == FUNCTION_TYPE)
7268 tree sname = TREE_OPERAND (declarator->u.id.name, 1);
7270 if (TREE_CODE (sname) == IDENTIFIER_NODE
7271 && NEW_DELETE_OPNAME_P (sname))
7272 /* Overloaded operator new and operator delete
7273 are always static functions. */
7275 else if (current_class_type == NULL_TREE || friendp)
7277 = build_method_type_directly (ctype,
7279 TYPE_ARG_TYPES (type));
7282 error ("cannot declare member function `%T::%s' within `%T'",
7283 ctype, name, current_class_type);
7284 return error_mark_node;
7287 else if (declspecs->specs[(int)ds_typedef]
7288 || COMPLETE_TYPE_P (complete_type (ctype)))
7290 /* Have to move this code elsewhere in this function.
7291 this code is used for i.e., typedef int A::M; M *pm;
7293 It is? How? jason 10/2/94 */
7295 if (current_class_type)
7297 error ("cannot declare member `%T::%s' within `%T'",
7298 ctype, name, current_class_type);
7299 return void_type_node;
7304 cxx_incomplete_type_error (NULL_TREE, ctype);
7305 return error_mark_node;
7312 *attrlist = chainon (returned_attrs, *attrlist);
7314 attrlist = &returned_attrs;
7317 /* Now TYPE has the actual type. */
7319 /* Did array size calculations overflow? */
7321 if (TREE_CODE (type) == ARRAY_TYPE
7322 && COMPLETE_TYPE_P (type)
7323 && TREE_OVERFLOW (TYPE_SIZE (type)))
7325 error ("size of array `%s' is too large", name);
7326 /* If we proceed with the array type as it is, we'll eventually
7327 crash in tree_low_cst(). */
7328 type = error_mark_node;
7331 if ((decl_context == FIELD || decl_context == PARM)
7332 && !processing_template_decl
7333 && variably_modified_type_p (type, NULL_TREE))
7335 if (decl_context == FIELD)
7336 error ("data member may not have variably modified type `%T'", type);
7338 error ("parameter may not have variably modified type `%T'", type);
7339 type = error_mark_node;
7342 if (explicitp == 1 || (explicitp && friendp))
7344 /* [dcl.fct.spec] The explicit specifier shall only be used in
7345 declarations of constructors within a class definition. */
7346 error ("only declarations of constructors can be `explicit'");
7350 if (storage_class == sc_mutable)
7352 if (decl_context != FIELD || friendp)
7354 error ("non-member `%s' cannot be declared `mutable'", name);
7355 storage_class = sc_none;
7357 else if (decl_context == TYPENAME || declspecs->specs[(int)ds_typedef])
7359 error ("non-object member `%s' cannot be declared `mutable'", name);
7360 storage_class = sc_none;
7362 else if (TREE_CODE (type) == FUNCTION_TYPE
7363 || TREE_CODE (type) == METHOD_TYPE)
7365 error ("function `%s' cannot be declared `mutable'", name);
7366 storage_class = sc_none;
7370 error ("static `%s' cannot be declared `mutable'", name);
7371 storage_class = sc_none;
7373 else if (type_quals & TYPE_QUAL_CONST)
7375 error ("const `%s' cannot be declared `mutable'", name);
7376 storage_class = sc_none;
7380 /* If this is declaring a typedef name, return a TYPE_DECL. */
7381 if (declspecs->specs[(int)ds_typedef] && decl_context != TYPENAME)
7385 /* Note that the grammar rejects storage classes
7386 in typenames, fields or parameters. */
7387 if (current_lang_name == lang_name_java)
7388 TYPE_FOR_JAVA (type) = 1;
7390 if (decl_context == FIELD)
7392 if (constructor_name_p (unqualified_id, current_class_type))
7393 pedwarn ("ISO C++ forbids nested type `%D' with same name as enclosing class",
7395 decl = build_lang_decl (TYPE_DECL, unqualified_id, type);
7399 decl = build_decl (TYPE_DECL, unqualified_id, type);
7400 if (in_namespace || ctype)
7401 error ("%Jtypedef name may not be a nested-name-specifier", decl);
7402 if (!current_function_decl)
7403 DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
7406 /* If the user declares "typedef struct {...} foo" then the
7407 struct will have an anonymous name. Fill that name in now.
7408 Nothing can refer to it, so nothing needs know about the name
7410 if (type != error_mark_node
7413 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
7414 && TYPE_ANONYMOUS_P (type)
7415 /* Don't do this if there are attributes. */
7416 && (!attrlist || !*attrlist)
7417 && cp_type_quals (type) == TYPE_UNQUALIFIED)
7419 tree oldname = TYPE_NAME (type);
7422 /* Replace the anonymous name with the real name everywhere. */
7423 lookup_tag_reverse (type, unqualified_id);
7424 for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
7425 if (TYPE_NAME (t) == oldname)
7426 TYPE_NAME (t) = decl;
7428 if (TYPE_LANG_SPECIFIC (type))
7429 TYPE_WAS_ANONYMOUS (type) = 1;
7431 /* If this is a typedef within a template class, the nested
7432 type is a (non-primary) template. The name for the
7433 template needs updating as well. */
7434 if (TYPE_LANG_SPECIFIC (type) && CLASSTYPE_TEMPLATE_INFO (type))
7435 DECL_NAME (CLASSTYPE_TI_TEMPLATE (type))
7436 = TYPE_IDENTIFIER (type);
7438 /* FIXME remangle member functions; member functions of a
7439 type with external linkage have external linkage. */
7444 if (ctype == NULL_TREE)
7446 if (TREE_CODE (type) != METHOD_TYPE)
7447 error ("%Jinvalid type qualifier for non-member function type",
7450 ctype = TYPE_METHOD_BASETYPE (type);
7452 if (ctype != NULL_TREE)
7453 grok_method_quals (ctype, decl, quals);
7457 || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
7458 C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
7460 bad_specifiers (decl, "type", virtualp, quals != TYPE_UNQUALIFIED,
7461 inlinep, friendp, raises != NULL_TREE);
7466 /* Detect the case of an array type of unspecified size
7467 which came, as such, direct from a typedef name.
7468 We must copy the type, so that the array's domain can be
7469 individually set by the object's initializer. */
7471 if (type && typedef_type
7472 && TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type)
7473 && TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (typedef_type))
7474 type = build_cplus_array_type (TREE_TYPE (type), NULL_TREE);
7476 /* Detect where we're using a typedef of function type to declare a
7477 function. PARMS will not be set, so we must create it now. */
7479 if (type == typedef_type && TREE_CODE (type) == FUNCTION_TYPE)
7481 tree decls = NULL_TREE;
7484 for (args = TYPE_ARG_TYPES (type); args; args = TREE_CHAIN (args))
7486 tree decl = cp_build_parm_decl (NULL_TREE, TREE_VALUE (args));
7488 TREE_CHAIN (decl) = decls;
7492 parms = nreverse (decls);
7495 /* If this is a type name (such as, in a cast or sizeof),
7496 compute the type and return it now. */
7498 if (decl_context == TYPENAME)
7500 /* Note that the grammar rejects storage classes
7501 in typenames, fields or parameters. */
7502 if (type_quals != TYPE_UNQUALIFIED)
7503 type_quals = TYPE_UNQUALIFIED;
7505 /* Special case: "friend class foo" looks like a TYPENAME context. */
7508 if (type_quals != TYPE_UNQUALIFIED)
7510 error ("type qualifiers specified for friend class declaration");
7511 type_quals = TYPE_UNQUALIFIED;
7515 error ("`inline' specified for friend class declaration");
7521 /* Don't allow friend declaration without a class-key. */
7522 if (TREE_CODE (type) == TEMPLATE_TYPE_PARM)
7523 pedwarn ("template parameters cannot be friends");
7524 else if (TREE_CODE (type) == TYPENAME_TYPE)
7525 pedwarn ("friend declaration requires class-key, "
7526 "i.e. `friend class %T::%D'",
7527 TYPE_CONTEXT (type), TYPENAME_TYPE_FULLNAME (type));
7529 pedwarn ("friend declaration requires class-key, "
7530 "i.e. `friend %#T'",
7534 /* Only try to do this stuff if we didn't already give up. */
7535 if (type != integer_type_node)
7537 /* A friendly class? */
7538 if (current_class_type)
7539 make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type),
7542 error ("trying to make class `%T' a friend of global scope",
7545 type = void_type_node;
7550 if (ctype == NULL_TREE)
7552 if (TREE_CODE (type) != METHOD_TYPE)
7553 error ("invalid qualifiers on non-member function type");
7555 ctype = TYPE_METHOD_BASETYPE (type);
7559 tree dummy = build_decl (TYPE_DECL, unqualified_id, type);
7560 grok_method_quals (ctype, dummy, quals);
7561 type = TREE_TYPE (dummy);
7567 else if (unqualified_id == NULL_TREE && decl_context != PARM
7568 && decl_context != CATCHPARM
7569 && TREE_CODE (type) != UNION_TYPE
7572 error ("abstract declarator `%T' used as declaration", type);
7573 unqualified_id = make_anon_name ();
7576 /* `void' at top level (not within pointer)
7577 is allowed only in typedefs or type names.
7578 We don't complain about parms either, but that is because
7579 a better error message can be made later. */
7581 if (TREE_CODE (type) == VOID_TYPE && decl_context != PARM)
7583 if (! unqualified_id)
7584 error ("unnamed variable or field declared void");
7585 else if (TREE_CODE (unqualified_id) == IDENTIFIER_NODE)
7587 if (IDENTIFIER_OPNAME_P (unqualified_id))
7590 error ("variable or field `%s' declared void", name);
7593 error ("variable or field declared void");
7594 type = integer_type_node;
7597 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
7598 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
7600 if (decl_context == PARM || decl_context == CATCHPARM)
7602 if (ctype || in_namespace)
7603 error ("cannot use `::' in parameter declaration");
7605 /* A parameter declared as an array of T is really a pointer to T.
7606 One declared as a function is really a pointer to a function.
7607 One declared as a member is really a pointer to member. */
7609 if (TREE_CODE (type) == ARRAY_TYPE)
7611 /* Transfer const-ness of array into that of type pointed to. */
7612 type = build_pointer_type (TREE_TYPE (type));
7613 type_quals = TYPE_UNQUALIFIED;
7615 else if (TREE_CODE (type) == FUNCTION_TYPE)
7616 type = build_pointer_type (type);
7622 if (decl_context == PARM)
7624 decl = cp_build_parm_decl (unqualified_id, type);
7626 bad_specifiers (decl, "parameter", virtualp, quals != TYPE_UNQUALIFIED,
7627 inlinep, friendp, raises != NULL_TREE);
7629 else if (decl_context == FIELD)
7631 /* The C99 flexible array extension. */
7632 if (!staticp && TREE_CODE (type) == ARRAY_TYPE
7633 && TYPE_DOMAIN (type) == NULL_TREE)
7635 tree itype = compute_array_index_type (dname, integer_zero_node);
7636 type = build_cplus_array_type (TREE_TYPE (type), itype);
7639 if (type == error_mark_node)
7641 /* Happens when declaring arrays of sizes which
7642 are error_mark_node, for example. */
7645 else if (in_namespace && !friendp)
7647 /* Something like struct S { int N::j; }; */
7648 error ("invalid use of `::'");
7651 else if (TREE_CODE (type) == FUNCTION_TYPE)
7654 tree function_context;
7656 /* We catch the others as conflicts with the builtin
7658 if (friendp && unqualified_id == ridpointers[(int) RID_SIGNED])
7660 error ("function `%D' cannot be declared friend",
7667 if (ctype == NULL_TREE)
7668 ctype = current_class_type;
7670 if (ctype == NULL_TREE)
7672 error ("can't make `%D' into a method -- not in a class",
7674 return void_type_node;
7677 /* ``A union may [ ... ] not [ have ] virtual functions.''
7679 if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
7681 error ("function `%D' declared virtual inside a union",
7683 return void_type_node;
7686 if (NEW_DELETE_OPNAME_P (unqualified_id))
7690 error ("`%D' cannot be declared virtual, since it is always static",
7695 else if (staticp < 2)
7696 type = build_method_type_directly (ctype,
7698 TYPE_ARG_TYPES (type));
7701 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
7702 function_context = (ctype != NULL_TREE) ?
7703 decl_function_context (TYPE_MAIN_DECL (ctype)) : NULL_TREE;
7704 publicp = (! friendp || ! staticp)
7705 && function_context == NULL_TREE;
7706 decl = grokfndecl (ctype, type,
7707 TREE_CODE (unqualified_id) != TEMPLATE_ID_EXPR
7708 ? unqualified_id : dname,
7711 virtualp, flags, quals, raises,
7712 friendp ? -1 : 0, friendp, publicp, inlinep,
7713 funcdef_flag, template_count, in_namespace);
7714 if (decl == NULL_TREE)
7717 /* This clobbers the attrs stored in `decl' from `attrlist'. */
7718 /* The decl and setting of decl_attr is also turned off. */
7719 decl = build_decl_attribute_variant (decl, decl_attr);
7722 /* [class.conv.ctor]
7724 A constructor declared without the function-specifier
7725 explicit that can be called with a single parameter
7726 specifies a conversion from the type of its first
7727 parameter to the type of its class. Such a constructor
7728 is called a converting constructor. */
7730 DECL_NONCONVERTING_P (decl) = 1;
7731 else if (DECL_CONSTRUCTOR_P (decl))
7733 /* The constructor can be called with exactly one
7734 parameter if there is at least one parameter, and
7735 any subsequent parameters have default arguments.
7736 Ignore any compiler-added parms. */
7737 tree arg_types = FUNCTION_FIRST_USER_PARMTYPE (decl);
7739 if (arg_types == void_list_node
7741 && TREE_CHAIN (arg_types)
7742 && TREE_CHAIN (arg_types) != void_list_node
7743 && !TREE_PURPOSE (TREE_CHAIN (arg_types))))
7744 DECL_NONCONVERTING_P (decl) = 1;
7747 else if (TREE_CODE (type) == METHOD_TYPE)
7749 /* We only get here for friend declarations of
7750 members of other classes. */
7751 /* All method decls are public, so tell grokfndecl to set
7752 TREE_PUBLIC, also. */
7753 decl = grokfndecl (ctype, type,
7754 TREE_CODE (unqualified_id) != TEMPLATE_ID_EXPR
7755 ? unqualified_id : dname,
7758 virtualp, flags, quals, raises,
7759 friendp ? -1 : 0, friendp, 1, 0, funcdef_flag,
7760 template_count, in_namespace);
7761 if (decl == NULL_TREE)
7764 else if (!staticp && !dependent_type_p (type)
7765 && !COMPLETE_TYPE_P (complete_type (type))
7766 && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
7769 error ("field `%D' has incomplete type", unqualified_id);
7771 error ("name `%T' has incomplete type", type);
7773 /* If we're instantiating a template, tell them which
7774 instantiation made the field's type be incomplete. */
7775 if (current_class_type
7776 && TYPE_NAME (current_class_type)
7777 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type))
7779 && declspecs->type == type)
7780 error (" in instantiation of template `%T'",
7781 current_class_type);
7783 type = error_mark_node;
7790 error ("`%E' is neither function nor member function; "
7791 "cannot be declared friend", unqualified_id);
7799 /* Friends are treated specially. */
7800 if (ctype == current_class_type)
7801 warning ("member functions are implicitly friends of their class");
7802 else if (decl && DECL_NAME (decl))
7804 if (template_class_depth (current_class_type) == 0)
7806 decl = check_explicit_specialization
7807 (unqualified_id, decl, template_count,
7808 2 * (funcdef_flag != 0) + 4);
7809 if (decl == error_mark_node)
7810 return error_mark_node;
7813 decl = do_friend (ctype, unqualified_id, decl,
7814 *attrlist, flags, quals, funcdef_flag);
7818 return void_type_node;
7821 /* Structure field. It may not be a function, except for C++. */
7823 if (decl == NULL_TREE)
7829 /* An attempt is being made to initialize a non-static
7830 member. But, from [class.mem]:
7832 4 A member-declarator can contain a
7833 constant-initializer only if it declares a static
7834 member (_class.static_) of integral or enumeration
7835 type, see _class.static.data_.
7837 This used to be relatively common practice, but
7838 the rest of the compiler does not correctly
7839 handle the initialization unless the member is
7840 static so we make it static below. */
7841 pedwarn ("ISO C++ forbids initialization of member `%D'",
7843 pedwarn ("making `%D' static", unqualified_id);
7847 if (uses_template_parms (type))
7848 /* We'll check at instantiation time. */
7850 else if (check_static_variable_definition (unqualified_id,
7852 /* If we just return the declaration, crashes
7853 will sometimes occur. We therefore return
7854 void_type_node, as if this was a friend
7855 declaration, to cause callers to completely
7856 ignore this declaration. */
7857 return void_type_node;
7862 /* C++ allows static class members. All other work
7863 for this is done by grokfield. */
7864 decl = build_lang_decl (VAR_DECL, unqualified_id, type);
7865 set_linkage_for_static_data_member (decl);
7866 /* Even if there is an in-class initialization, DECL
7867 is considered undefined until an out-of-class
7868 definition is provided. */
7869 DECL_EXTERNAL (decl) = 1;
7873 decl = build_decl (FIELD_DECL, unqualified_id, type);
7874 DECL_NONADDRESSABLE_P (decl) = bitfield;
7875 if (storage_class == sc_mutable)
7877 DECL_MUTABLE_P (decl) = 1;
7878 storage_class = sc_none;
7882 bad_specifiers (decl, "field", virtualp, quals != TYPE_UNQUALIFIED,
7883 inlinep, friendp, raises != NULL_TREE);
7886 else if (TREE_CODE (type) == FUNCTION_TYPE
7887 || TREE_CODE (type) == METHOD_TYPE)
7892 if (!unqualified_id)
7895 if (TREE_CODE (unqualified_id) == TEMPLATE_ID_EXPR)
7896 original_name = dname;
7898 original_name = unqualified_id;
7900 if (storage_class == sc_auto)
7901 error ("storage class `auto' invalid for function `%s'", name);
7902 else if (storage_class == sc_register)
7903 error ("storage class `register' invalid for function `%s'", name);
7905 error ("storage class `__thread' invalid for function `%s'", name);
7907 /* Function declaration not at top level.
7908 Storage classes other than `extern' are not allowed
7909 and `extern' makes no difference. */
7910 if (! toplevel_bindings_p ()
7911 && (storage_class == sc_static
7912 || declspecs->specs[(int)ds_inline])
7915 if (storage_class == sc_static)
7916 pedwarn ("`static' specified invalid for function `%s' declared out of global scope", name);
7918 pedwarn ("`inline' specifier invalid for function `%s' declared out of global scope", name);
7921 if (ctype == NULL_TREE)
7925 error ("virtual non-class function `%s'", name);
7929 else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2
7930 && !NEW_DELETE_OPNAME_P (original_name))
7931 type = build_method_type_directly (ctype,
7933 TYPE_ARG_TYPES (type));
7935 /* Record presence of `static'. */
7936 publicp = (ctype != NULL_TREE
7937 || storage_class == sc_extern
7938 || storage_class != sc_static);
7940 decl = grokfndecl (ctype, type, original_name, parms, unqualified_id,
7941 virtualp, flags, quals, raises,
7943 publicp, inlinep, funcdef_flag,
7944 template_count, in_namespace);
7945 if (decl == NULL_TREE)
7950 int invalid_static = 0;
7952 /* Don't allow a static member function in a class, and forbid
7953 declaring main to be static. */
7954 if (TREE_CODE (type) == METHOD_TYPE)
7956 pedwarn ("cannot declare member function `%D' to have static linkage", decl);
7959 else if (current_function_decl)
7961 /* FIXME need arm citation */
7962 error ("cannot declare static function inside another function");
7969 storage_class = sc_none;
7975 /* It's a variable. */
7977 /* An uninitialized decl with `extern' is a reference. */
7978 decl = grokvardecl (type, unqualified_id,
7981 (type_quals & TYPE_QUAL_CONST) != 0,
7982 ctype ? ctype : in_namespace);
7983 bad_specifiers (decl, "variable", virtualp, quals != TYPE_UNQUALIFIED,
7984 inlinep, friendp, raises != NULL_TREE);
7988 DECL_CONTEXT (decl) = ctype;
7991 pedwarn ("`static' may not be used when defining (as opposed to declaring) a static data member");
7993 storage_class = sc_none;
7995 if (storage_class == sc_register && TREE_STATIC (decl))
7997 error ("static member `%D' declared `register'", decl);
7998 storage_class = sc_none;
8000 if (storage_class == sc_extern && pedantic)
8002 pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
8004 storage_class = sc_none;
8009 /* Record `register' declaration for warnings on &
8010 and in case doing stupid register allocation. */
8012 if (storage_class == sc_register)
8013 DECL_REGISTER (decl) = 1;
8014 else if (storage_class == sc_extern)
8015 DECL_THIS_EXTERN (decl) = 1;
8016 else if (storage_class == sc_static)
8017 DECL_THIS_STATIC (decl) = 1;
8019 /* Record constancy and volatility. There's no need to do this
8020 when processing a template; we'll do this for the instantiated
8021 declaration based on the type of DECL. */
8022 if (!processing_template_decl)
8023 c_apply_type_quals_to_decl (type_quals, decl);
8029 /* Subroutine of start_function. Ensure that each of the parameter
8030 types (as listed in PARMS) is complete, as is required for a
8031 function definition. */
8034 require_complete_types_for_parms (tree parms)
8036 for (; parms; parms = TREE_CHAIN (parms))
8038 if (VOID_TYPE_P (TREE_TYPE (parms)))
8039 /* grokparms will have already issued an error. */
8040 TREE_TYPE (parms) = error_mark_node;
8041 else if (complete_type_or_else (TREE_TYPE (parms), parms))
8043 layout_decl (parms, 0);
8044 DECL_ARG_TYPE (parms) = type_passed_as (TREE_TYPE (parms));
8049 /* Returns nonzero if T is a local variable. */
8052 local_variable_p (tree t)
8054 if ((TREE_CODE (t) == VAR_DECL
8055 /* A VAR_DECL with a context that is a _TYPE is a static data
8057 && !TYPE_P (CP_DECL_CONTEXT (t))
8058 /* Any other non-local variable must be at namespace scope. */
8059 && !DECL_NAMESPACE_SCOPE_P (t))
8060 || (TREE_CODE (t) == PARM_DECL))
8066 /* Returns nonzero if T is an automatic local variable or a label.
8067 (These are the declarations that need to be remapped when the code
8068 containing them is duplicated.) */
8071 nonstatic_local_decl_p (tree t)
8073 return ((local_variable_p (t) && !TREE_STATIC (t))
8074 || TREE_CODE (t) == LABEL_DECL
8075 || TREE_CODE (t) == RESULT_DECL);
8078 /* Like local_variable_p, but suitable for use as a tree-walking
8082 local_variable_p_walkfn (tree *tp, int *walk_subtrees,
8083 void *data ATTRIBUTE_UNUSED)
8085 if (local_variable_p (*tp) && !DECL_ARTIFICIAL (*tp))
8087 else if (TYPE_P (*tp))
8094 /* Check that ARG, which is a default-argument expression for a
8095 parameter DECL, is valid. Returns ARG, or ERROR_MARK_NODE, if
8096 something goes wrong. DECL may also be a _TYPE node, rather than a
8097 DECL, if there is no DECL available. */
8100 check_default_argument (tree decl, tree arg)
8105 if (TREE_CODE (arg) == DEFAULT_ARG)
8106 /* We get a DEFAULT_ARG when looking at an in-class declaration
8107 with a default argument. Ignore the argument for now; we'll
8108 deal with it after the class is complete. */
8111 if (processing_template_decl || uses_template_parms (arg))
8112 /* We don't do anything checking until instantiation-time. Note
8113 that there may be uninstantiated arguments even for an
8114 instantiated function, since default arguments are not
8115 instantiated until they are needed. */
8124 decl_type = TREE_TYPE (decl);
8126 if (arg == error_mark_node
8127 || decl == error_mark_node
8128 || TREE_TYPE (arg) == error_mark_node
8129 || decl_type == error_mark_node)
8130 /* Something already went wrong. There's no need to check
8132 return error_mark_node;
8134 /* [dcl.fct.default]
8136 A default argument expression is implicitly converted to the
8138 if (!TREE_TYPE (arg)
8139 || !can_convert_arg (decl_type, TREE_TYPE (arg), arg))
8142 error ("default argument for `%#D' has type `%T'",
8143 decl, TREE_TYPE (arg));
8145 error ("default argument for parameter of type `%T' has type `%T'",
8146 decl_type, TREE_TYPE (arg));
8148 return error_mark_node;
8151 /* [dcl.fct.default]
8153 Local variables shall not be used in default argument
8156 The keyword `this' shall not be used in a default argument of a
8158 var = walk_tree_without_duplicates (&arg, local_variable_p_walkfn,
8162 error ("default argument `%E' uses local variable `%D'",
8164 return error_mark_node;
8171 /* Decode the list of parameter types for a function type.
8172 Given the list of things declared inside the parens,
8173 return a list of types.
8175 If this parameter does not end with an ellipsis, we append
8178 *PARMS is set to the chain of PARM_DECLs created. */
8181 grokparms (cp_parameter_declarator *first_parm, tree *parms)
8183 tree result = NULL_TREE;
8184 tree decls = NULL_TREE;
8185 int ellipsis = !first_parm || first_parm->ellipsis_p;
8186 cp_parameter_declarator *parm;
8189 for (parm = first_parm; parm != NULL; parm = parm->next)
8191 tree type = NULL_TREE;
8192 tree init = parm->default_argument;
8196 if (parm == no_parameters)
8199 attrs = parm->decl_specifiers.attributes;
8200 parm->decl_specifiers.attributes = NULL_TREE;
8201 decl = grokdeclarator (parm->declarator, &parm->decl_specifiers,
8202 PARM, init != NULL_TREE, &attrs);
8203 if (! decl || TREE_TYPE (decl) == error_mark_node)
8207 cplus_decl_attributes (&decl, attrs, 0);
8209 type = TREE_TYPE (decl);
8210 if (VOID_TYPE_P (type))
8212 if (same_type_p (type, void_type_node)
8213 && !DECL_NAME (decl) && !result && !parm->next && !ellipsis)
8214 /* this is a parmlist of `(void)', which is ok. */
8216 cxx_incomplete_type_error (decl, type);
8217 /* It's not a good idea to actually create parameters of
8218 type `void'; other parts of the compiler assume that a
8219 void type terminates the parameter list. */
8220 type = error_mark_node;
8221 TREE_TYPE (decl) = error_mark_node;
8224 if (type != error_mark_node)
8226 /* Top-level qualifiers on the parameters are
8227 ignored for function types. */
8228 type = cp_build_qualified_type (type, 0);
8229 if (TREE_CODE (type) == METHOD_TYPE)
8231 error ("parameter `%D' invalidly declared method type", decl);
8232 type = build_pointer_type (type);
8233 TREE_TYPE (decl) = type;
8235 else if (abstract_virtuals_error (decl, type))
8236 any_error = 1; /* Seems like a good idea. */
8237 else if (POINTER_TYPE_P (type))
8239 /* [dcl.fct]/6, parameter types cannot contain pointers
8240 (references) to arrays of unknown bound. */
8241 tree t = TREE_TYPE (type);
8242 int ptr = TYPE_PTR_P (type);
8248 else if (TREE_CODE (t) != ARRAY_TYPE)
8250 else if (!TYPE_DOMAIN (t))
8254 if (TREE_CODE (t) == ARRAY_TYPE)
8255 error ("parameter `%D' includes %s to array of unknown bound `%T'",
8256 decl, ptr ? "pointer" : "reference", t);
8259 if (!any_error && init)
8260 init = check_default_argument (decl, init);
8265 TREE_CHAIN (decl) = decls;
8267 result = tree_cons (init, type, result);
8269 decls = nreverse (decls);
8270 result = nreverse (result);
8272 result = chainon (result, void_list_node);
8279 /* D is a constructor or overloaded `operator='.
8281 Let T be the class in which D is declared. Then, this function
8284 -1 if D's is an ill-formed constructor or copy assignment operator
8285 whose first parameter is of type `T'.
8286 0 if D is not a copy constructor or copy assignment
8288 1 if D is a copy constructor or copy assignment operator whose
8289 first parameter is a reference to const qualified T.
8290 2 if D is a copy constructor or copy assignment operator whose
8291 first parameter is a reference to non-const qualified T.
8293 This function can be used as a predicate. Positive values indicate
8294 a copy constructor and nonzero values indicate a copy assignment
8304 my_friendly_assert (DECL_FUNCTION_MEMBER_P (d), 20011208);
8306 if (DECL_TEMPLATE_INFO (d) && is_member_template (DECL_TI_TEMPLATE (d)))
8307 /* Instantiations of template member functions are never copy
8308 functions. Note that member functions of templated classes are
8309 represented as template functions internally, and we must
8310 accept those as copy functions. */
8313 args = FUNCTION_FIRST_USER_PARMTYPE (d);
8317 arg_type = TREE_VALUE (args);
8319 if (TYPE_MAIN_VARIANT (arg_type) == DECL_CONTEXT (d))
8321 /* Pass by value copy assignment operator. */
8324 else if (TREE_CODE (arg_type) == REFERENCE_TYPE
8325 && TYPE_MAIN_VARIANT (TREE_TYPE (arg_type)) == DECL_CONTEXT (d))
8327 if (CP_TYPE_CONST_P (TREE_TYPE (arg_type)))
8333 args = TREE_CHAIN (args);
8335 if (args && args != void_list_node && !TREE_PURPOSE (args))
8336 /* There are more non-optional args. */
8342 /* Remember any special properties of member function DECL. */
8344 void grok_special_member_properties (tree decl)
8346 if (!DECL_NONSTATIC_MEMBER_FUNCTION_P(decl))
8347 ; /* Not special. */
8348 else if (DECL_CONSTRUCTOR_P (decl))
8350 int ctor = copy_fn_p (decl);
8356 A non-template constructor for class X is a copy
8357 constructor if its first parameter is of type X&, const
8358 X&, volatile X& or const volatile X&, and either there
8359 are no other parameters or else all other parameters have
8360 default arguments. */
8361 TYPE_HAS_INIT_REF (DECL_CONTEXT (decl)) = 1;
8363 TYPE_HAS_CONST_INIT_REF (DECL_CONTEXT (decl)) = 1;
8365 else if (sufficient_parms_p (FUNCTION_FIRST_USER_PARMTYPE (decl)))
8366 TYPE_HAS_DEFAULT_CONSTRUCTOR (DECL_CONTEXT (decl)) = 1;
8368 else if (DECL_OVERLOADED_OPERATOR_P (decl) == NOP_EXPR)
8372 A non-template assignment operator for class X is a copy
8373 assignment operator if its parameter is of type X, X&, const
8374 X&, volatile X& or const volatile X&. */
8376 int assop = copy_fn_p (decl);
8380 TYPE_HAS_ASSIGN_REF (DECL_CONTEXT (decl)) = 1;
8382 TYPE_HAS_CONST_ASSIGN_REF (DECL_CONTEXT (decl)) = 1;
8387 /* Check a constructor DECL has the correct form. Complains
8388 if the class has a constructor of the form X(X). */
8391 grok_ctor_properties (tree ctype, tree decl)
8393 int ctor_parm = copy_fn_p (decl);
8399 A declaration of a constructor for a class X is ill-formed if
8400 its first parameter is of type (optionally cv-qualified) X
8401 and either there are no other parameters or else all other
8402 parameters have default arguments.
8404 We *don't* complain about member template instantiations that
8405 have this form, though; they can occur as we try to decide
8406 what constructor to use during overload resolution. Since
8407 overload resolution will never prefer such a constructor to
8408 the non-template copy constructor (which is either explicitly
8409 or implicitly defined), there's no need to worry about their
8410 existence. Theoretically, they should never even be
8411 instantiated, but that's hard to forestall. */
8412 error ("invalid constructor; you probably meant `%T (const %T&)'",
8420 /* An operator with this code is unary, but can also be binary. */
8423 ambi_op_p (enum tree_code code)
8425 return (code == INDIRECT_REF
8426 || code == ADDR_EXPR
8427 || code == CONVERT_EXPR
8428 || code == NEGATE_EXPR
8429 || code == PREINCREMENT_EXPR
8430 || code == PREDECREMENT_EXPR);
8433 /* An operator with this name can only be unary. */
8436 unary_op_p (enum tree_code code)
8438 return (code == TRUTH_NOT_EXPR
8439 || code == BIT_NOT_EXPR
8440 || code == COMPONENT_REF
8441 || code == TYPE_EXPR);
8444 /* DECL is a declaration for an overloaded operator. Returns true if
8445 the declaration is valid; false otherwise. If COMPLAIN is true,
8446 errors are issued for invalid declarations. */
8449 grok_op_properties (tree decl, int friendp, bool complain)
8451 tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
8453 int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
8454 tree name = DECL_NAME (decl);
8455 enum tree_code operator_code;
8459 /* Assume that the declaration is valid. */
8462 /* Count the number of arguments. */
8463 for (argtype = argtypes, arity = 0;
8464 argtype && argtype != void_list_node;
8465 argtype = TREE_CHAIN (argtype))
8468 if (current_class_type == NULL_TREE)
8471 if (DECL_CONV_FN_P (decl))
8472 operator_code = TYPE_EXPR;
8476 #define DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, ASSN_P) \
8477 if (ansi_opname (CODE) == name) \
8479 operator_code = (CODE); \
8482 else if (ansi_assopname (CODE) == name) \
8484 operator_code = (CODE); \
8485 DECL_ASSIGNMENT_OPERATOR_P (decl) = 1; \
8489 #include "operators.def"
8495 my_friendly_assert (operator_code != LAST_CPLUS_TREE_CODE, 20000526);
8496 SET_OVERLOADED_OPERATOR_CODE (decl, operator_code);
8500 switch (operator_code)
8503 TYPE_HAS_NEW_OPERATOR (current_class_type) = 1;
8507 TYPE_GETS_DELETE (current_class_type) |= 1;
8511 TYPE_HAS_ARRAY_NEW_OPERATOR (current_class_type) = 1;
8514 case VEC_DELETE_EXPR:
8515 TYPE_GETS_DELETE (current_class_type) |= 2;
8523 /* [basic.std.dynamic.allocation]/1:
8525 A program is ill-formed if an allocation function is declared
8526 in a namespace scope other than global scope or declared static
8529 The same also holds true for deallocation functions. */
8530 if (operator_code == NEW_EXPR || operator_code == VEC_NEW_EXPR
8531 || operator_code == DELETE_EXPR || operator_code == VEC_DELETE_EXPR)
8533 if (DECL_NAMESPACE_SCOPE_P (decl))
8535 if (CP_DECL_CONTEXT (decl) != global_namespace)
8536 error ("`%D' may not be declared within a namespace", decl);
8537 else if (!TREE_PUBLIC (decl))
8538 error ("`%D' may not be declared as static", decl);
8542 if (operator_code == NEW_EXPR || operator_code == VEC_NEW_EXPR)
8543 TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
8544 else if (operator_code == DELETE_EXPR || operator_code == VEC_DELETE_EXPR)
8545 TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
8548 /* An operator function must either be a non-static member function
8549 or have at least one parameter of a class, a reference to a class,
8550 an enumeration, or a reference to an enumeration. 13.4.0.6 */
8551 if (! methodp || DECL_STATIC_FUNCTION_P (decl))
8553 if (operator_code == TYPE_EXPR
8554 || operator_code == CALL_EXPR
8555 || operator_code == COMPONENT_REF
8556 || operator_code == ARRAY_REF
8557 || operator_code == NOP_EXPR)
8558 error ("`%D' must be a nonstatic member function", decl);
8563 if (DECL_STATIC_FUNCTION_P (decl))
8564 error ("`%D' must be either a non-static member function or a non-member function", decl);
8566 for (p = argtypes; p && p != void_list_node; p = TREE_CHAIN (p))
8568 tree arg = non_reference (TREE_VALUE (p));
8569 /* IS_AGGR_TYPE, rather than CLASS_TYPE_P, is used
8570 because these checks are performed even on
8571 template functions. */
8572 if (IS_AGGR_TYPE (arg) || TREE_CODE (arg) == ENUMERAL_TYPE)
8576 if (!p || p == void_list_node)
8581 error ("`%D' must have an argument of class or "
8589 /* There are no restrictions on the arguments to an overloaded
8591 if (operator_code == CALL_EXPR)
8594 if (IDENTIFIER_TYPENAME_P (name) && ! DECL_TEMPLATE_INFO (decl))
8596 tree t = TREE_TYPE (name);
8599 int ref = (TREE_CODE (t) == REFERENCE_TYPE);
8600 const char *what = 0;
8603 t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
8605 if (TREE_CODE (t) == VOID_TYPE)
8607 else if (t == current_class_type)
8608 what = "the same type";
8609 /* Don't force t to be complete here. */
8610 else if (IS_AGGR_TYPE (t)
8611 && COMPLETE_TYPE_P (t)
8612 && DERIVED_FROM_P (t, current_class_type))
8613 what = "a base class";
8615 if (what && warn_conversion)
8616 warning ("conversion to %s%s will never use a type conversion operator",
8617 ref ? "a reference to " : "", what);
8620 if (operator_code == COND_EXPR)
8623 error ("ISO C++ prohibits overloading operator ?:");
8625 else if (ambi_op_p (operator_code))
8628 /* We pick the one-argument operator codes by default, so
8629 we don't have to change anything. */
8631 else if (arity == 2)
8633 /* If we thought this was a unary operator, we now know
8634 it to be a binary operator. */
8635 switch (operator_code)
8638 operator_code = MULT_EXPR;
8642 operator_code = BIT_AND_EXPR;
8646 operator_code = PLUS_EXPR;
8650 operator_code = MINUS_EXPR;
8653 case PREINCREMENT_EXPR:
8654 operator_code = POSTINCREMENT_EXPR;
8657 case PREDECREMENT_EXPR:
8658 operator_code = POSTDECREMENT_EXPR;
8665 SET_OVERLOADED_OPERATOR_CODE (decl, operator_code);
8667 if ((operator_code == POSTINCREMENT_EXPR
8668 || operator_code == POSTDECREMENT_EXPR)
8669 && ! processing_template_decl
8670 && ! same_type_p (TREE_VALUE (TREE_CHAIN (argtypes)), integer_type_node))
8673 error ("postfix `%D' must take `int' as its argument",
8677 ("postfix `%D' must take `int' as its second argument",
8684 error ("`%D' must take either zero or one argument", decl);
8686 error ("`%D' must take either one or two arguments", decl);
8689 /* More Effective C++ rule 6. */
8691 && (operator_code == POSTINCREMENT_EXPR
8692 || operator_code == POSTDECREMENT_EXPR
8693 || operator_code == PREINCREMENT_EXPR
8694 || operator_code == PREDECREMENT_EXPR))
8696 tree arg = TREE_VALUE (argtypes);
8697 tree ret = TREE_TYPE (TREE_TYPE (decl));
8698 if (methodp || TREE_CODE (arg) == REFERENCE_TYPE)
8699 arg = TREE_TYPE (arg);
8700 arg = TYPE_MAIN_VARIANT (arg);
8701 if (operator_code == PREINCREMENT_EXPR
8702 || operator_code == PREDECREMENT_EXPR)
8704 if (TREE_CODE (ret) != REFERENCE_TYPE
8705 || !same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (ret)),
8707 warning ("prefix `%D' should return `%T'", decl,
8708 build_reference_type (arg));
8712 if (!same_type_p (TYPE_MAIN_VARIANT (ret), arg))
8713 warning ("postfix `%D' should return `%T'", decl, arg);
8717 else if (unary_op_p (operator_code))
8722 error ("`%D' must take `void'", decl);
8724 error ("`%D' must take exactly one argument", decl);
8727 else /* if (binary_op_p (operator_code)) */
8732 error ("`%D' must take exactly one argument", decl);
8734 error ("`%D' must take exactly two arguments", decl);
8737 /* More Effective C++ rule 7. */
8739 && (operator_code == TRUTH_ANDIF_EXPR
8740 || operator_code == TRUTH_ORIF_EXPR
8741 || operator_code == COMPOUND_EXPR))
8742 warning ("user-defined `%D' always evaluates both arguments",
8746 /* Effective C++ rule 23. */
8749 && !DECL_ASSIGNMENT_OPERATOR_P (decl)
8750 && (operator_code == PLUS_EXPR
8751 || operator_code == MINUS_EXPR
8752 || operator_code == TRUNC_DIV_EXPR
8753 || operator_code == MULT_EXPR
8754 || operator_code == TRUNC_MOD_EXPR)
8755 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == REFERENCE_TYPE)
8756 warning ("`%D' should return by value", decl);
8759 for (; argtypes && argtypes != void_list_node;
8760 argtypes = TREE_CHAIN (argtypes))
8761 if (TREE_PURPOSE (argtypes))
8763 TREE_PURPOSE (argtypes) = NULL_TREE;
8764 if (operator_code == POSTINCREMENT_EXPR
8765 || operator_code == POSTDECREMENT_EXPR)
8768 pedwarn ("`%D' cannot have default arguments", decl);
8771 error ("`%D' cannot have default arguments", decl);
8780 tag_name (enum tag_types code)
8797 /* Name lookup in an elaborated-type-specifier (after the keyword
8798 indicated by TAG_CODE) has found the TYPE_DECL DECL. If the
8799 elaborated-type-specifier is invalid, issue a diagnostic and return
8800 error_mark_node; otherwise, return the *_TYPE to which it referred.
8801 If ALLOW_TEMPLATE_P is true, TYPE may be a class template. */
8804 check_elaborated_type_specifier (enum tag_types tag_code,
8806 bool allow_template_p)
8812 struct S { struct S *p; };
8814 name lookup will find the TYPE_DECL for the implicit "S::S"
8815 typedef. Adjust for that here. */
8816 if (DECL_SELF_REFERENCE_P (decl))
8817 decl = TYPE_NAME (TREE_TYPE (decl));
8819 type = TREE_TYPE (decl);
8823 If the identifier resolves to a typedef-name or a template
8824 type-parameter, the elaborated-type-specifier is ill-formed.
8826 In other words, the only legitimate declaration to use in the
8827 elaborated type specifier is the implicit typedef created when
8828 the type is declared. */
8829 if (!DECL_IMPLICIT_TYPEDEF_P (decl))
8831 error ("using typedef-name `%D' after `%s'", decl, tag_name (tag_code));
8832 return IS_AGGR_TYPE (type) ? type : error_mark_node;
8835 if (TREE_CODE (type) == TEMPLATE_TYPE_PARM)
8837 error ("using template type parameter `%T' after `%s'",
8838 type, tag_name (tag_code));
8839 return error_mark_node;
8841 else if (TREE_CODE (type) != RECORD_TYPE
8842 && TREE_CODE (type) != UNION_TYPE
8843 && tag_code != enum_type)
8845 error ("`%T' referred to as `%s'", type, tag_name (tag_code));
8846 return error_mark_node;
8848 else if (TREE_CODE (type) != ENUMERAL_TYPE
8849 && tag_code == enum_type)
8851 error ("`%T' referred to as enum", type);
8852 return error_mark_node;
8854 else if (!allow_template_p
8855 && TREE_CODE (type) == RECORD_TYPE
8856 && CLASSTYPE_IS_TEMPLATE (type))
8858 /* If a class template appears as elaborated type specifier
8859 without a template header such as:
8861 template <class T> class C {};
8862 void f(class C); // No template header here
8864 then the required template argument is missing. */
8866 error ("template argument required for `%s %T'",
8867 tag_name (tag_code),
8868 DECL_NAME (CLASSTYPE_TI_TEMPLATE (type)));
8869 return error_mark_node;
8875 /* Get the struct, enum or union (TAG_CODE says which) with tag NAME.
8876 Define the tag as a forward-reference if it is not defined.
8878 If a declaration is given, process it here, and report an error if
8879 multiple declarations are not identical.
8881 GLOBALIZE is false when this is also a definition. Only look in
8882 the current frame for the name (since C++ allows new names in any
8885 TEMPLATE_HEADER_P is true when this declaration is preceded by
8886 a set of template parameters. */
8889 xref_tag (enum tag_types tag_code, tree name,
8890 bool globalize, bool template_header_p)
8892 enum tree_code code;
8894 struct cp_binding_level *b = current_binding_level;
8895 tree context = NULL_TREE;
8897 timevar_push (TV_NAME_LOOKUP);
8899 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 0);
8911 code = ENUMERAL_TYPE;
8919 /* If we know we are defining this tag, only look it up in
8920 this scope and don't try to find it as a type. */
8921 t = lookup_tag (code, name, b, 1);
8925 tree decl = lookup_name (name, 2);
8927 if (decl && DECL_CLASS_TEMPLATE_P (decl))
8928 decl = DECL_TEMPLATE_RESULT (decl);
8930 if (decl && TREE_CODE (decl) == TYPE_DECL)
8932 /* Two cases we need to consider when deciding if a class
8933 template is allowed as an elaborated type specifier:
8934 1. It is a self reference to its own class.
8935 2. It comes with a template header.
8939 template <class T> class C {
8940 class C *c1; // DECL_SELF_REFERENCE_P is true
8943 template <class U> class C; // template_header_p is true
8944 template <class T> class C<T>::D {
8945 class C *c2; // DECL_SELF_REFERENCE_P is true
8948 t = check_elaborated_type_specifier (tag_code,
8951 | DECL_SELF_REFERENCE_P (decl));
8952 if (t == error_mark_node)
8953 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
8958 if (t && current_class_type
8959 && template_class_depth (current_class_type)
8960 && template_header_p)
8962 /* Since GLOBALIZE is nonzero, we are not looking at a
8963 definition of this tag. Since, in addition, we are currently
8964 processing a (member) template declaration of a template
8965 class, we must be very careful; consider:
8972 { template <class V>
8973 friend struct S1; };
8975 Here, the S2::S1 declaration should not be confused with the
8976 outer declaration. In particular, the inner version should
8977 have a template parameter of level 2, not level 1. This
8978 would be particularly important if the member declaration
8981 template <class V = U> friend struct S1;
8983 say, when we should tsubst into `U' when instantiating
8984 S2. On the other hand, when presented with:
8994 we must find the inner binding eventually. We
8995 accomplish this by making sure that the new type we
8996 create to represent this declaration has the right
8998 context = TYPE_CONTEXT (t);
9005 /* If no such tag is yet defined, create a forward-reference node
9006 and record it as the "definition".
9007 When a real declaration of this type is found,
9008 the forward-reference will be altered into a real type. */
9009 if (code == ENUMERAL_TYPE)
9011 error ("use of enum `%#D' without previous declaration", name);
9012 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
9016 t = make_aggr_type (code);
9017 TYPE_CONTEXT (t) = context;
9018 pushtag (name, t, globalize);
9023 if (!globalize && processing_template_decl && IS_AGGR_TYPE (t))
9024 redeclare_class_template (t, current_template_parms);
9025 else if (!processing_template_decl
9027 && CLASSTYPE_IS_TEMPLATE (t))
9029 error ("redeclaration of `%T' as a non-template", t);
9030 t = error_mark_node;
9034 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
9038 xref_tag_from_type (tree old, tree id, int globalize)
9040 enum tag_types tag_kind;
9042 if (TREE_CODE (old) == RECORD_TYPE)
9043 tag_kind = (CLASSTYPE_DECLARED_CLASS (old) ? class_type : record_type);
9045 tag_kind = union_type;
9047 if (id == NULL_TREE)
9048 id = TYPE_IDENTIFIER (old);
9050 return xref_tag (tag_kind, id, globalize, false);
9053 /* Create the binfo hierarchy for REF with (possibly NULL) base list
9054 BASE_LIST. For each element on BASE_LIST the TREE_PURPOSE is an
9055 access_* node, and the TREE_VALUE is the type of the base-class.
9056 Non-NULL TREE_TYPE indicates virtual inheritance. */
9059 xref_basetypes (tree ref, tree base_list)
9062 tree binfo, base_binfo;
9063 unsigned max_vbases = 0; /* Maxium direct & indirect virtual bases. */
9064 unsigned max_bases = 0; /* Maxium direct bases. */
9066 tree default_access;
9067 tree igo_prev; /* Track Inheritance Graph Order. */
9069 if (ref == error_mark_node)
9072 /* The base of a derived class is private by default, all others are
9074 default_access = (TREE_CODE (ref) == RECORD_TYPE
9075 && CLASSTYPE_DECLARED_CLASS (ref)
9076 ? access_private_node : access_public_node);
9078 /* First, make sure that any templates in base-classes are
9079 instantiated. This ensures that if we call ourselves recursively
9080 we do not get confused about which classes are marked and which
9085 tree basetype = TREE_VALUE (*basep);
9087 if (!(processing_template_decl && uses_template_parms (basetype))
9088 && !complete_type_or_else (basetype, NULL))
9089 /* An incomplete type. Remove it from the list. */
9090 *basep = TREE_CHAIN (*basep);
9094 if (TREE_TYPE (*basep))
9096 if (CLASS_TYPE_P (basetype))
9097 max_vbases += VEC_length (tree, CLASSTYPE_VBASECLASSES (basetype));
9098 basep = &TREE_CHAIN (*basep);
9102 SET_CLASSTYPE_MARKED (ref);
9104 /* The binfo slot should be empty, unless this is an (ill-formed)
9106 my_friendly_assert (!TYPE_BINFO (ref) || TYPE_SIZE (ref), 20040706);
9107 my_friendly_assert (TYPE_MAIN_VARIANT (ref) == ref, 20040712);
9109 binfo = make_tree_binfo (max_bases);
9111 TYPE_BINFO (ref) = binfo;
9112 BINFO_OFFSET (binfo) = size_zero_node;
9113 BINFO_TYPE (binfo) = ref;
9117 BINFO_BASE_ACCESSES (binfo) = VEC_alloc (tree, max_bases);
9118 /* An aggregate cannot have baseclasses. */
9119 CLASSTYPE_NON_AGGREGATE (ref) = 1;
9121 if (TREE_CODE (ref) == UNION_TYPE)
9122 error ("derived union `%T' invalid", ref);
9127 TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1;
9128 /* If there is more than one non-empty they cannot be at the
9130 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) = 1;
9132 if (TYPE_FOR_JAVA (ref))
9133 error ("Java class '%T' cannot have multiple bases", ref);
9138 CLASSTYPE_VBASECLASSES (ref) = VEC_alloc (tree, max_vbases);
9139 TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1;
9140 /* Converting to a virtual base class requires looking up the
9141 offset of the virtual base. */
9142 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) = 1;
9144 if (TYPE_FOR_JAVA (ref))
9145 error ("Java class '%T' cannot have virtual bases", ref);
9148 for (igo_prev = binfo; base_list; base_list = TREE_CHAIN (base_list))
9150 tree access = TREE_PURPOSE (base_list);
9151 int via_virtual = TREE_TYPE (base_list) != NULL_TREE;
9152 tree basetype = TREE_VALUE (base_list);
9154 if (access == access_default_node)
9155 access = default_access;
9157 if (TREE_CODE (basetype) == TYPE_DECL)
9158 basetype = TREE_TYPE (basetype);
9159 if (TREE_CODE (basetype) != RECORD_TYPE
9160 && TREE_CODE (basetype) != TYPENAME_TYPE
9161 && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM
9162 && TREE_CODE (basetype) != BOUND_TEMPLATE_TEMPLATE_PARM)
9164 error ("base type `%T' fails to be a struct or class type",
9169 if (CLASSTYPE_MARKED (basetype))
9171 if (basetype == ref)
9172 error ("recursive type `%T' undefined", basetype);
9174 error ("duplicate base type `%T' invalid", basetype);
9177 SET_CLASSTYPE_MARKED (basetype);
9179 if (TYPE_FOR_JAVA (basetype) && (current_lang_depth () == 0))
9180 TYPE_FOR_JAVA (ref) = 1;
9182 base_binfo = NULL_TREE;
9183 if (CLASS_TYPE_P (basetype) && !dependent_type_p (basetype))
9185 base_binfo = TYPE_BINFO (basetype);
9186 /* The orignal basetype could have been a typedef'd type. */
9187 basetype = BINFO_TYPE (base_binfo);
9189 /* Inherit flags from the base. */
9190 TYPE_HAS_NEW_OPERATOR (ref)
9191 |= TYPE_HAS_NEW_OPERATOR (basetype);
9192 TYPE_HAS_ARRAY_NEW_OPERATOR (ref)
9193 |= TYPE_HAS_ARRAY_NEW_OPERATOR (basetype);
9194 TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
9195 TYPE_USES_MULTIPLE_INHERITANCE (ref)
9196 |= TYPE_USES_MULTIPLE_INHERITANCE (basetype);
9197 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref)
9198 |= TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (basetype);
9199 TYPE_HAS_CONVERSION (ref) |= TYPE_HAS_CONVERSION (basetype);
9202 base_binfo = copy_binfo (base_binfo, basetype, ref,
9203 &igo_prev, via_virtual);
9204 if (!BINFO_INHERITANCE_CHAIN (base_binfo))
9205 BINFO_INHERITANCE_CHAIN (base_binfo) = binfo;
9207 BINFO_BASE_APPEND (binfo, base_binfo);
9208 BINFO_BASE_ACCESS_APPEND (binfo, access);
9211 /* Unmark all the types. */
9212 for (i = 0; BINFO_BASE_ITERATE (binfo, i, base_binfo); i++)
9213 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (base_binfo));
9214 CLEAR_CLASSTYPE_MARKED (ref);
9218 /* Begin compiling the definition of an enumeration type.
9219 NAME is its name (or null if anonymous).
9220 Returns the type object, as yet incomplete.
9221 Also records info about it so that build_enumerator
9222 may be used to declare the individual values as they are read. */
9225 start_enum (tree name)
9227 tree enumtype = NULL_TREE;
9228 struct cp_binding_level *b = current_binding_level;
9230 /* If this is the real definition for a previous forward reference,
9231 fill in the contents in the same object that used to be the
9232 forward reference. */
9234 if (name != NULL_TREE)
9235 enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1);
9237 if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE)
9239 error ("multiple definition of `%#T'", enumtype);
9240 error ("%Jprevious definition here", TYPE_MAIN_DECL (enumtype));
9241 /* Clear out TYPE_VALUES, and start again. */
9242 TYPE_VALUES (enumtype) = NULL_TREE;
9246 enumtype = make_node (ENUMERAL_TYPE);
9247 pushtag (name, enumtype, 0);
9253 /* After processing and defining all the values of an enumeration type,
9254 install their decls in the enumeration type and finish it off.
9255 ENUMTYPE is the type object and VALUES a list of name-value pairs. */
9258 finish_enum (tree enumtype)
9270 integer_type_kind itk;
9271 tree underlying_type = NULL_TREE;
9273 /* We built up the VALUES in reverse order. */
9274 TYPE_VALUES (enumtype) = nreverse (TYPE_VALUES (enumtype));
9276 /* For an enum defined in a template, just set the type of the values;
9277 all further processing is postponed until the template is
9278 instantiated. We need to set the type so that tsubst of a CONST_DECL
9280 if (processing_template_decl)
9282 for (values = TYPE_VALUES (enumtype);
9284 values = TREE_CHAIN (values))
9285 TREE_TYPE (TREE_VALUE (values)) = enumtype;
9286 if (at_function_scope_p ())
9287 add_stmt (build_min (TAG_DEFN, enumtype));
9291 /* Determine the minimum and maximum values of the enumerators. */
9292 if (TYPE_VALUES (enumtype))
9294 minnode = maxnode = NULL_TREE;
9296 for (values = TYPE_VALUES (enumtype);
9298 values = TREE_CHAIN (values))
9300 decl = TREE_VALUE (values);
9302 /* [dcl.enum]: Following the closing brace of an enum-specifier,
9303 each enumerator has the type of its enumeration. Prior to the
9304 closing brace, the type of each enumerator is the type of its
9305 initializing value. */
9306 TREE_TYPE (decl) = enumtype;
9308 /* Update the minimum and maximum values, if appropriate. */
9309 value = DECL_INITIAL (decl);
9310 /* Figure out what the minimum and maximum values of the
9313 minnode = maxnode = value;
9314 else if (tree_int_cst_lt (maxnode, value))
9316 else if (tree_int_cst_lt (value, minnode))
9319 /* Set the TREE_TYPE for the values as well. That's so that when
9320 we call decl_constant_value we get an entity of the right type
9321 (but with the constant value). But first make a copy so we
9322 don't clobber shared INTEGER_CSTs. */
9323 if (TREE_TYPE (value) != enumtype)
9325 value = DECL_INITIAL (decl) = copy_node (value);
9326 TREE_TYPE (value) = enumtype;
9333 If the enumerator-list is empty, the underlying type is as if
9334 the enumeration had a single enumerator with value 0. */
9335 minnode = maxnode = integer_zero_node;
9337 /* Compute the number of bits require to represent all values of the
9338 enumeration. We must do this before the type of MINNODE and
9339 MAXNODE are transformed, since min_precision relies on the
9340 TREE_TYPE of the value it is passed. */
9341 unsignedp = tree_int_cst_sgn (minnode) >= 0;
9342 lowprec = min_precision (minnode, unsignedp);
9343 highprec = min_precision (maxnode, unsignedp);
9344 precision = MAX (lowprec, highprec);
9346 /* Determine the underlying type of the enumeration.
9350 The underlying type of an enumeration is an integral type that
9351 can represent all the enumerator values defined in the
9352 enumeration. It is implementation-defined which integral type is
9353 used as the underlying type for an enumeration except that the
9354 underlying type shall not be larger than int unless the value of
9355 an enumerator cannot fit in an int or unsigned int.
9357 We use "int" or an "unsigned int" as the underlying type, even if
9358 a smaller integral type would work, unless the user has
9359 explicitly requested that we use the smallest possible type. */
9360 for (itk = (flag_short_enums ? itk_char : itk_int);
9364 underlying_type = integer_types[itk];
9365 if (TYPE_PRECISION (underlying_type) >= precision
9366 && TYPE_UNSIGNED (underlying_type) == unsignedp)
9369 if (itk == itk_none)
9373 IF no integral type can represent all the enumerator values, the
9374 enumeration is ill-formed. */
9375 error ("no integral type can represent all of the enumerator values "
9376 "for `%T'", enumtype);
9377 precision = TYPE_PRECISION (long_long_integer_type_node);
9378 underlying_type = integer_types[itk_unsigned_long_long];
9381 /* Compute the minium and maximum values for the type.
9385 For an enumeration where emin is the smallest enumerator and emax
9386 is the largest, the values of the enumeration are the values of the
9387 underlying type in the range bmin to bmax, where bmin and bmax are,
9388 respectively, the smallest and largest values of the smallest bit-
9389 field that can store emin and emax. */
9390 TYPE_PRECISION (enumtype) = precision;
9391 set_min_and_max_values_for_integral_type (enumtype, precision, unsignedp);
9395 The value of sizeof() applied to an enumeration type, an object
9396 of an enumeration type, or an enumerator, is the value of sizeof()
9397 applied to the underlying type. */
9398 TYPE_SIZE (enumtype) = TYPE_SIZE (underlying_type);
9399 TYPE_SIZE_UNIT (enumtype) = TYPE_SIZE_UNIT (underlying_type);
9400 TYPE_MODE (enumtype) = TYPE_MODE (underlying_type);
9401 TYPE_ALIGN (enumtype) = TYPE_ALIGN (underlying_type);
9402 TYPE_USER_ALIGN (enumtype) = TYPE_USER_ALIGN (underlying_type);
9403 TYPE_UNSIGNED (enumtype) = TYPE_UNSIGNED (underlying_type);
9405 /* Convert each of the enumerators to the type of the underlying
9406 type of the enumeration. */
9407 for (values = TYPE_VALUES (enumtype); values; values = TREE_CHAIN (values))
9409 decl = TREE_VALUE (values);
9410 value = perform_implicit_conversion (underlying_type,
9411 DECL_INITIAL (decl));
9412 TREE_TYPE (value) = enumtype;
9413 DECL_INITIAL (decl) = value;
9414 TREE_VALUE (values) = value;
9417 /* Fix up all variant types of this enum type. */
9418 for (t = TYPE_MAIN_VARIANT (enumtype); t; t = TYPE_NEXT_VARIANT (t))
9420 TYPE_VALUES (t) = TYPE_VALUES (enumtype);
9421 TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (enumtype);
9422 TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (enumtype);
9423 TYPE_SIZE (t) = TYPE_SIZE (enumtype);
9424 TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (enumtype);
9425 TYPE_MODE (t) = TYPE_MODE (enumtype);
9426 TYPE_PRECISION (t) = TYPE_PRECISION (enumtype);
9427 TYPE_ALIGN (t) = TYPE_ALIGN (enumtype);
9428 TYPE_USER_ALIGN (t) = TYPE_USER_ALIGN (enumtype);
9429 TYPE_UNSIGNED (t) = TYPE_UNSIGNED (enumtype);
9432 /* Finish debugging output for this type. */
9433 rest_of_type_compilation (enumtype, namespace_bindings_p ());
9436 /* Build and install a CONST_DECL for an enumeration constant of the
9437 enumeration type ENUMTYPE whose NAME and VALUE (if any) are provided.
9438 Assignment of sequential values by default is handled here. */
9441 build_enumerator (tree name, tree value, tree enumtype)
9447 /* Remove no-op casts from the value. */
9449 STRIP_TYPE_NOPS (value);
9451 if (! processing_template_decl)
9453 /* Validate and default VALUE. */
9454 if (value != NULL_TREE)
9456 value = decl_constant_value (value);
9458 if (TREE_CODE (value) == INTEGER_CST)
9460 value = perform_integral_promotions (value);
9461 constant_expression_warning (value);
9465 error ("enumerator value for `%D' not integer constant", name);
9470 /* Default based on previous value. */
9471 if (value == NULL_TREE)
9475 if (TYPE_VALUES (enumtype))
9477 /* The next value is the previous value ... */
9478 prev_value = DECL_INITIAL (TREE_VALUE (TYPE_VALUES (enumtype)));
9480 value = cp_build_binary_op (PLUS_EXPR,
9484 if (tree_int_cst_lt (value, prev_value))
9485 error ("overflow in enumeration values at `%D'", name);
9488 value = integer_zero_node;
9491 /* Remove no-op casts from the value. */
9492 STRIP_TYPE_NOPS (value);
9495 /* C++ associates enums with global, function, or class declarations. */
9496 context = current_scope ();
9498 context = current_namespace;
9500 /* Build the actual enumeration constant. Note that the enumeration
9501 constants have the type of their initializers until the
9502 enumeration is complete:
9506 Following the closing brace of an enum-specifier, each enumer-
9507 ator has the type of its enumeration. Prior to the closing
9508 brace, the type of each enumerator is the type of its
9511 In finish_enum we will reset the type. Of course, if we're
9512 processing a template, there may be no value. */
9513 type = value ? TREE_TYPE (value) : NULL_TREE;
9515 if (context && context == current_class_type)
9516 /* This enum declaration is local to the class. We need the full
9517 lang_decl so that we can record DECL_CLASS_CONTEXT, for example. */
9518 decl = build_lang_decl (CONST_DECL, name, type);
9520 /* It's a global enum, or it's local to a function. (Note local to
9521 a function could mean local to a class method. */
9522 decl = build_decl (CONST_DECL, name, type);
9524 DECL_CONTEXT (decl) = FROB_CONTEXT (context);
9525 TREE_CONSTANT (decl) = 1;
9526 TREE_INVARIANT (decl) = 1;
9527 TREE_READONLY (decl) = 1;
9528 DECL_INITIAL (decl) = value;
9530 if (context && context == current_class_type)
9531 /* In something like `struct S { enum E { i = 7 }; };' we put `i'
9532 on the TYPE_FIELDS list for `S'. (That's so that you can say
9533 things like `S::i' later.) */
9534 finish_member_declaration (decl);
9538 /* Add this enumeration constant to the list for this type. */
9539 TYPE_VALUES (enumtype) = tree_cons (name, decl, TYPE_VALUES (enumtype));
9543 /* We're defining DECL. Make sure that it's type is OK. */
9546 check_function_type (tree decl, tree current_function_parms)
9548 tree fntype = TREE_TYPE (decl);
9549 tree return_type = complete_type (TREE_TYPE (fntype));
9551 /* In a function definition, arg types must be complete. */
9552 require_complete_types_for_parms (current_function_parms);
9554 if (!COMPLETE_OR_VOID_TYPE_P (return_type))
9556 error ("return type `%#T' is incomplete", TREE_TYPE (fntype));
9558 /* Make it return void instead, but don't change the
9559 type of the DECL_RESULT, in case we have a named return value. */
9560 if (TREE_CODE (fntype) == METHOD_TYPE)
9562 tree ctype = TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (fntype)));
9564 = build_method_type_directly (ctype,
9566 FUNCTION_ARG_CHAIN (decl));
9570 = build_function_type (void_type_node,
9571 TYPE_ARG_TYPES (TREE_TYPE (decl)));
9573 = build_exception_variant (fntype,
9574 TYPE_RAISES_EXCEPTIONS (fntype));
9577 abstract_virtuals_error (decl, TREE_TYPE (fntype));
9580 /* Create the FUNCTION_DECL for a function definition.
9581 DECLSPECS and DECLARATOR are the parts of the declaration;
9582 they describe the function's name and the type it returns,
9583 but twisted together in a fashion that parallels the syntax of C.
9585 FLAGS is a bitwise or of SF_PRE_PARSED (indicating that the
9586 DECLARATOR is really the DECL for the function we are about to
9587 process and that DECLSPECS should be ignored), SF_INCLASS_INLINE
9588 indicating that the function is an inline defined in-class.
9590 This function creates a binding context for the function body
9591 as well as setting up the FUNCTION_DECL in current_function_decl.
9593 For C++, we must first check whether that datum makes any sense.
9594 For example, "class A local_a(1,2);" means that variable local_a
9595 is an aggregate of type A, which should have a constructor
9596 applied to it with the argument list [1, 2]. */
9599 start_preparsed_function (tree decl1, tree attrs, int flags)
9601 tree ctype = NULL_TREE;
9604 int doing_friend = 0;
9605 struct cp_binding_level *bl;
9606 tree current_function_parms;
9609 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node)) == VOID_TYPE, 160);
9610 my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161);
9612 fntype = TREE_TYPE (decl1);
9613 if (TREE_CODE (fntype) == METHOD_TYPE)
9614 ctype = TYPE_METHOD_BASETYPE (fntype);
9616 /* ISO C++ 11.4/5. A friend function defined in a class is in
9617 the (lexical) scope of the class in which it is defined. */
9618 if (!ctype && DECL_FRIEND_P (decl1))
9620 ctype = DECL_FRIEND_CONTEXT (decl1);
9622 /* CTYPE could be null here if we're dealing with a template;
9623 for example, `inline friend float foo()' inside a template
9624 will have no CTYPE set. */
9625 if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
9631 if (DECL_DECLARED_INLINE_P (decl1)
9632 && lookup_attribute ("noinline", attrs))
9633 warning ("%Jinline function '%D' given attribute noinline", decl1, decl1);
9635 /* Determine the ELF visibility attribute for the function. */
9636 determine_visibility (decl1);
9638 if (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (decl1))
9639 /* This is a constructor, we must ensure that any default args
9640 introduced by this definition are propagated to the clones
9641 now. The clones are used directly in overload resolution. */
9642 adjust_clone_args (decl1);
9644 /* Sometimes we don't notice that a function is a static member, and
9645 build a METHOD_TYPE for it. Fix that up now. */
9646 if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1)
9647 && TREE_CODE (TREE_TYPE (decl1)) == METHOD_TYPE)
9649 revert_static_member_fn (decl1);
9653 /* Set up current_class_type, and enter the scope of the class, if
9656 push_nested_class (ctype);
9657 else if (DECL_STATIC_FUNCTION_P (decl1))
9658 push_nested_class (DECL_CONTEXT (decl1));
9660 /* Now that we have entered the scope of the class, we must restore
9661 the bindings for any template parameters surrounding DECL1, if it
9662 is an inline member template. (Order is important; consider the
9663 case where a template parameter has the same name as a field of
9664 the class.) It is not until after this point that
9665 PROCESSING_TEMPLATE_DECL is guaranteed to be set up correctly. */
9666 if (flags & SF_INCLASS_INLINE)
9667 maybe_begin_member_template_processing (decl1);
9669 /* Effective C++ rule 15. */
9671 && DECL_OVERLOADED_OPERATOR_P (decl1) == NOP_EXPR
9672 && TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE)
9673 warning ("`operator=' should return a reference to `*this'");
9675 /* Make the init_value nonzero so pushdecl knows this is not tentative.
9676 error_mark_node is replaced below (in poplevel) with the BLOCK. */
9677 if (!DECL_INITIAL (decl1))
9678 DECL_INITIAL (decl1) = error_mark_node;
9680 /* This function exists in static storage.
9681 (This does not mean `static' in the C sense!) */
9682 TREE_STATIC (decl1) = 1;
9684 /* We must call push_template_decl after current_class_type is set
9685 up. (If we are processing inline definitions after exiting a
9686 class scope, current_class_type will be NULL_TREE until set above
9687 by push_nested_class.) */
9688 if (processing_template_decl)
9689 decl1 = push_template_decl (decl1);
9691 /* We are now in the scope of the function being defined. */
9692 current_function_decl = decl1;
9694 /* Save the parm names or decls from this function's declarator
9695 where store_parm_decls will find them. */
9696 current_function_parms = DECL_ARGUMENTS (decl1);
9698 /* Make sure the parameter and return types are reasonable. When
9699 you declare a function, these types can be incomplete, but they
9700 must be complete when you define the function. */
9701 if (! processing_template_decl)
9702 check_function_type (decl1, current_function_parms);
9704 /* Build the return declaration for the function. */
9705 restype = TREE_TYPE (fntype);
9706 /* Promote the value to int before returning it. */
9707 if (c_promoting_integer_type_p (restype))
9708 restype = type_promotes_to (restype);
9709 if (DECL_RESULT (decl1) == NULL_TREE)
9713 resdecl = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype));
9714 DECL_ARTIFICIAL (resdecl) = 1;
9715 DECL_IGNORED_P (resdecl) = 1;
9716 DECL_RESULT (decl1) = resdecl;
9718 c_apply_type_quals_to_decl (cp_type_quals (restype), resdecl);
9721 /* Initialize RTL machinery. We cannot do this until
9722 CURRENT_FUNCTION_DECL and DECL_RESULT are set up. We do this
9723 even when processing a template; this is how we get
9724 CFUN set up, and our per-function variables initialized.
9725 FIXME factor out the non-RTL stuff. */
9726 bl = current_binding_level;
9727 allocate_struct_function (decl1);
9728 current_binding_level = bl;
9730 /* Even though we're inside a function body, we still don't want to
9731 call expand_expr to calculate the size of a variable-sized array.
9732 We haven't necessarily assigned RTL to all variables yet, so it's
9733 not safe to try to expand expressions involving them. */
9734 cfun->x_dont_save_pending_sizes_p = 1;
9736 /* Start the statement-tree, start the tree now. */
9737 DECL_SAVED_TREE (decl1) = push_stmt_list ();
9739 /* Let the user know we're compiling this function. */
9740 announce_function (decl1);
9742 /* Record the decl so that the function name is defined.
9743 If we already have a decl for this name, and it is a FUNCTION_DECL,
9744 use the old decl. */
9745 if (!processing_template_decl && !(flags & SF_PRE_PARSED))
9747 /* A specialization is not used to guide overload resolution. */
9748 if (!DECL_FUNCTION_MEMBER_P (decl1)
9749 && !(DECL_USE_TEMPLATE (decl1) &&
9750 PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (decl1))))
9752 tree olddecl = pushdecl (decl1);
9754 if (olddecl == error_mark_node)
9755 /* If something went wrong when registering the declaration,
9756 use DECL1; we have to have a FUNCTION_DECL to use when
9757 parsing the body of the function. */
9760 /* Otherwise, OLDDECL is either a previous declaration of
9761 the same function or DECL1 itself. */
9766 /* We need to set the DECL_CONTEXT. */
9767 if (!DECL_CONTEXT (decl1) && DECL_TEMPLATE_INFO (decl1))
9768 DECL_CONTEXT (decl1) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1));
9769 /* And make sure we have enough default args. */
9770 check_default_args (decl1);
9772 fntype = TREE_TYPE (decl1);
9775 /* Reset these in case the call to pushdecl changed them. */
9776 current_function_decl = decl1;
9779 /* If we are (erroneously) defining a function that we have already
9780 defined before, wipe out what we knew before. */
9781 if (!DECL_PENDING_INLINE_P (decl1))
9782 DECL_SAVED_FUNCTION_DATA (decl1) = NULL;
9784 if (ctype && !doing_friend && !DECL_STATIC_FUNCTION_P (decl1))
9786 /* We know that this was set up by `grokclassfn'. We do not
9787 wait until `store_parm_decls', since evil parse errors may
9788 never get us to that point. Here we keep the consistency
9789 between `current_class_type' and `current_class_ptr'. */
9790 tree t = DECL_ARGUMENTS (decl1);
9792 my_friendly_assert (t != NULL_TREE && TREE_CODE (t) == PARM_DECL,
9794 my_friendly_assert (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE,
9797 cp_function_chain->x_current_class_ref
9798 = build_indirect_ref (t, NULL);
9799 cp_function_chain->x_current_class_ptr = t;
9801 /* Constructors and destructors need to know whether they're "in
9802 charge" of initializing virtual base classes. */
9804 if (DECL_HAS_IN_CHARGE_PARM_P (decl1))
9806 current_in_charge_parm = t;
9809 if (DECL_HAS_VTT_PARM_P (decl1))
9811 if (DECL_NAME (t) != vtt_parm_identifier)
9813 current_vtt_parm = t;
9817 if (DECL_INTERFACE_KNOWN (decl1))
9819 tree ctx = decl_function_context (decl1);
9821 if (DECL_NOT_REALLY_EXTERN (decl1))
9822 DECL_EXTERNAL (decl1) = 0;
9824 if (ctx != NULL_TREE && DECL_DECLARED_INLINE_P (ctx)
9825 && TREE_PUBLIC (ctx))
9826 /* This is a function in a local class in an extern inline
9828 comdat_linkage (decl1);
9830 /* If this function belongs to an interface, it is public.
9831 If it belongs to someone else's interface, it is also external.
9832 This only affects inlines and template instantiations. */
9833 else if (interface_unknown == 0
9834 && ! DECL_TEMPLATE_INSTANTIATION (decl1))
9836 if (DECL_DECLARED_INLINE_P (decl1)
9837 || DECL_TEMPLATE_INSTANTIATION (decl1)
9838 || processing_template_decl)
9840 DECL_EXTERNAL (decl1)
9842 || (DECL_DECLARED_INLINE_P (decl1)
9843 && ! flag_implement_inlines
9844 && !DECL_VINDEX (decl1)));
9846 /* For WIN32 we also want to put these in linkonce sections. */
9847 maybe_make_one_only (decl1);
9850 DECL_EXTERNAL (decl1) = 0;
9851 DECL_NOT_REALLY_EXTERN (decl1) = 0;
9852 DECL_INTERFACE_KNOWN (decl1) = 1;
9853 /* If this function is in an interface implemented in this file,
9854 make sure that the backend knows to emit this function
9856 if (!DECL_EXTERNAL (decl1))
9857 mark_needed (decl1);
9859 else if (interface_unknown && interface_only
9860 && ! DECL_TEMPLATE_INSTANTIATION (decl1))
9862 /* If MULTIPLE_SYMBOL_SPACES is defined and we saw a #pragma
9863 interface, we will have interface_only set but not
9864 interface_known. In that case, we don't want to use the normal
9865 heuristics because someone will supply a #pragma implementation
9866 elsewhere, and deducing it here would produce a conflict. */
9867 comdat_linkage (decl1);
9868 DECL_EXTERNAL (decl1) = 0;
9869 DECL_INTERFACE_KNOWN (decl1) = 1;
9870 DECL_DEFER_OUTPUT (decl1) = 1;
9874 /* This is a definition, not a reference.
9875 So clear DECL_EXTERNAL. */
9876 DECL_EXTERNAL (decl1) = 0;
9878 if ((DECL_DECLARED_INLINE_P (decl1)
9879 || DECL_TEMPLATE_INSTANTIATION (decl1))
9880 && ! DECL_INTERFACE_KNOWN (decl1)
9881 /* Don't try to defer nested functions for now. */
9882 && ! decl_function_context (decl1))
9883 DECL_DEFER_OUTPUT (decl1) = 1;
9885 DECL_INTERFACE_KNOWN (decl1) = 1;
9888 begin_scope (sk_function_parms, decl1);
9892 if (DECL_DESTRUCTOR_P (decl1)
9893 || (DECL_CONSTRUCTOR_P (decl1)
9894 && targetm.cxx.cdtor_returns_this ()))
9896 cdtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
9897 DECL_CONTEXT (cdtor_label) = current_function_decl;
9900 start_fname_decls ();
9902 store_parm_decls (current_function_parms);
9906 /* Like start_preparsed_function, except that instead of a
9907 FUNCTION_DECL, this function takes DECLSPECS and DECLARATOR.
9909 Returns 1 on success. If the DECLARATOR is not suitable for a function
9910 (it defines a datum instead), we return 0, which tells
9911 yyparse to report a parse error. */
9914 start_function (cp_decl_specifier_seq *declspecs,
9915 const cp_declarator *declarator,
9920 if (have_extern_spec)
9922 declspecs->storage_class = sc_extern;
9923 /* This should only be done once on the outermost decl. */
9924 have_extern_spec = false;
9927 decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, &attrs);
9928 /* If the declarator is not suitable for a function definition,
9929 cause a syntax error. */
9930 if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL)
9933 cplus_decl_attributes (&decl1, attrs, 0);
9935 /* If #pragma weak was used, mark the decl weak now. */
9936 if (global_scope_p (current_binding_level))
9937 maybe_apply_pragma_weak (decl1);
9939 if (DECL_MAIN_P (decl1))
9941 /* If this doesn't return integer_type, or a typedef to
9942 integer_type, complain. */
9943 if (!same_type_p (TREE_TYPE (TREE_TYPE (decl1)), integer_type_node))
9945 if (pedantic || warn_return_type)
9946 pedwarn ("return type for `main' changed to `int'");
9947 TREE_TYPE (decl1) = default_function_type;
9951 start_preparsed_function (decl1, attrs, /*flags=*/SF_DEFAULT);
9956 /* Store the parameter declarations into the current function declaration.
9957 This is called after parsing the parameter declarations, before
9958 digesting the body of the function.
9960 Also install to binding contour return value identifier, if any. */
9963 store_parm_decls (tree current_function_parms)
9965 tree fndecl = current_function_decl;
9968 /* This is a chain of any other decls that came in among the parm
9969 declarations. If a parm is declared with enum {foo, bar} x;
9970 then CONST_DECLs for foo and bar are put here. */
9971 tree nonparms = NULL_TREE;
9973 if (current_function_parms)
9975 /* This case is when the function was defined with an ANSI prototype.
9976 The parms already have decls, so we need not do anything here
9977 except record them as in effect
9978 and complain if any redundant old-style parm decls were written. */
9980 tree specparms = current_function_parms;
9983 /* Must clear this because it might contain TYPE_DECLs declared
9985 current_binding_level->names = NULL;
9987 /* If we're doing semantic analysis, then we'll call pushdecl
9988 for each of these. We must do them in reverse order so that
9989 they end in the correct forward order. */
9990 specparms = nreverse (specparms);
9992 for (parm = specparms; parm; parm = next)
9994 next = TREE_CHAIN (parm);
9995 if (TREE_CODE (parm) == PARM_DECL)
9997 if (DECL_NAME (parm) == NULL_TREE
9998 || TREE_CODE (parm) != VOID_TYPE)
10001 error ("parameter `%D' declared void", parm);
10005 /* If we find an enum constant or a type tag,
10006 put it aside for the moment. */
10007 TREE_CHAIN (parm) = NULL_TREE;
10008 nonparms = chainon (nonparms, parm);
10012 /* Get the decls in their original chain order and record in the
10013 function. This is all and only the PARM_DECLs that were
10014 pushed into scope by the loop above. */
10015 DECL_ARGUMENTS (fndecl) = getdecls ();
10018 DECL_ARGUMENTS (fndecl) = NULL_TREE;
10020 /* Now store the final chain of decls for the arguments
10021 as the decl-chain of the current lexical scope.
10022 Put the enumerators in as well, at the front so that
10023 DECL_ARGUMENTS is not modified. */
10024 current_binding_level->names = chainon (nonparms, DECL_ARGUMENTS (fndecl));
10026 /* For a cloned function, we've already got all the code we need;
10027 there's no need to add any extra bits. */
10028 if (!DECL_CLONED_FUNCTION_P (fndecl))
10030 /* Do the starting of the exception specifications, if we have any. */
10031 if (flag_exceptions && !processing_template_decl
10032 && flag_enforce_eh_specs
10033 && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
10034 current_eh_spec_block = begin_eh_spec_block ();
10039 /* We have finished doing semantic analysis on DECL, but have not yet
10040 generated RTL for its body. Save away our current state, so that
10041 when we want to generate RTL later we know what to do. */
10044 save_function_data (tree decl)
10046 struct language_function *f;
10048 /* Save the language-specific per-function data so that we can
10049 get it back when we really expand this function. */
10050 my_friendly_assert (!DECL_PENDING_INLINE_P (decl),
10054 f = GGC_NEW (struct language_function);
10055 memcpy (f, cp_function_chain, sizeof (struct language_function));
10056 DECL_SAVED_FUNCTION_DATA (decl) = f;
10058 /* Clear out the bits we don't need. */
10059 f->base.x_stmt_tree.x_cur_stmt_list = NULL_TREE;
10060 f->x_named_label_uses = NULL;
10061 f->bindings = NULL;
10062 f->x_local_names = NULL;
10066 /* Set the return value of the constructor (if present). */
10069 finish_constructor_body (void)
10074 if (targetm.cxx.cdtor_returns_this ())
10076 /* Any return from a constructor will end up here. */
10077 add_stmt (build_stmt (LABEL_EXPR, cdtor_label));
10079 val = DECL_ARGUMENTS (current_function_decl);
10080 val = build (MODIFY_EXPR, TREE_TYPE (val),
10081 DECL_RESULT (current_function_decl), val);
10082 /* Return the address of the object. */
10083 exprstmt = build_stmt (RETURN_EXPR, val);
10084 add_stmt (exprstmt);
10088 /* Do all the processing for the beginning of a destructor; set up the
10089 vtable pointers and cleanups for bases and members. */
10092 begin_destructor_body (void)
10095 tree compound_stmt;
10097 /* If the dtor is empty, and we know there is not any possible
10098 way we could use any vtable entries, before they are possibly
10099 set by a base class dtor, we don't have to setup the vtables,
10100 as we know that any base class dtor will set up any vtables
10101 it needs. We avoid MI, because one base class dtor can do a
10102 virtual dispatch to an overridden function that would need to
10103 have a non-related vtable set up, we cannot avoid setting up
10104 vtables in that case. We could change this to see if there
10105 is just one vtable.
10107 ??? In the destructor for a class, the vtables are set
10108 appropriately for that class. There will be no non-related
10109 vtables. jason 2001-12-11. */
10110 if_stmt = begin_if_stmt ();
10112 /* If it is not safe to avoid setting up the vtables, then
10113 someone will change the condition to be boolean_true_node.
10114 (Actually, for now, we do not have code to set the condition
10115 appropriately, so we just assume that we always need to
10116 initialize the vtables.) */
10117 finish_if_stmt_cond (boolean_true_node, if_stmt);
10119 compound_stmt = begin_compound_stmt (0);
10121 /* Make all virtual function table pointers in non-virtual base
10122 classes point to CURRENT_CLASS_TYPE's virtual function
10124 initialize_vtbl_ptrs (current_class_ptr);
10126 finish_compound_stmt (compound_stmt);
10127 finish_then_clause (if_stmt);
10128 finish_if_stmt (if_stmt);
10130 /* And insert cleanups for our bases and members so that they
10131 will be properly destroyed if we throw. */
10132 push_base_cleanups ();
10135 /* At the end of every destructor we generate code to delete the object if
10136 necessary. Do that now. */
10139 finish_destructor_body (void)
10143 /* Any return from a destructor will end up here; that way all base
10144 and member cleanups will be run when the function returns. */
10145 add_stmt (build_stmt (LABEL_EXPR, cdtor_label));
10147 /* In a virtual destructor, we must call delete. */
10148 if (DECL_VIRTUAL_P (current_function_decl))
10151 tree virtual_size = cxx_sizeof (current_class_type);
10155 At the point of definition of a virtual destructor (including
10156 an implicit definition), non-placement operator delete shall
10157 be looked up in the scope of the destructor's class and if
10158 found shall be accessible and unambiguous. */
10159 exprstmt = build_op_delete_call
10160 (DELETE_EXPR, current_class_ptr, virtual_size,
10161 /*global_p=*/false, NULL_TREE);
10163 if_stmt = begin_if_stmt ();
10164 finish_if_stmt_cond (build (BIT_AND_EXPR, integer_type_node,
10165 current_in_charge_parm,
10168 finish_expr_stmt (exprstmt);
10169 finish_then_clause (if_stmt);
10170 finish_if_stmt (if_stmt);
10173 if (targetm.cxx.cdtor_returns_this ())
10177 val = DECL_ARGUMENTS (current_function_decl);
10178 val = build (MODIFY_EXPR, TREE_TYPE (val),
10179 DECL_RESULT (current_function_decl), val);
10180 /* Return the address of the object. */
10181 exprstmt = build_stmt (RETURN_EXPR, val);
10182 add_stmt (exprstmt);
10186 /* Do the necessary processing for the beginning of a function body, which
10187 in this case includes member-initializers, but not the catch clauses of
10188 a function-try-block. Currently, this means opening a binding level
10189 for the member-initializers (in a ctor) and member cleanups (in a dtor).
10190 In other functions, this isn't necessary, but it doesn't hurt. */
10193 begin_function_body (void)
10197 if (processing_template_decl)
10198 /* Do nothing now. */;
10200 /* Always keep the BLOCK node associated with the outermost pair of
10201 curly braces of a function. These are needed for correct
10202 operation of dwarfout.c. */
10203 keep_next_level (true);
10205 stmt = begin_compound_stmt (BCS_FN_BODY);
10207 if (processing_template_decl)
10208 /* Do nothing now. */;
10209 else if (DECL_DESTRUCTOR_P (current_function_decl))
10210 begin_destructor_body ();
10215 /* Do the processing for the end of a function body. Currently, this means
10216 closing out the cleanups for fully-constructed bases and members, and in
10217 the case of the destructor, deleting the object if desired. Again, this
10218 is only meaningful for [cd]tors, since they are the only functions where
10219 there is a significant distinction between the main body and any
10220 function catch clauses. Handling, say, main() return semantics here
10221 would be wrong, as flowing off the end of a function catch clause for
10222 main() would also need to return 0. */
10225 finish_function_body (tree compstmt)
10227 /* Close the block. */
10228 finish_compound_stmt (compstmt);
10230 if (processing_template_decl)
10231 /* Do nothing now. */;
10232 else if (DECL_CONSTRUCTOR_P (current_function_decl))
10233 finish_constructor_body ();
10234 else if (DECL_DESTRUCTOR_P (current_function_decl))
10235 finish_destructor_body ();
10238 /* Finish up a function declaration and compile that function
10239 all the way to assembler language output. The free the storage
10240 for the function definition.
10242 FLAGS is a bitwise or of the following values:
10244 We just finished processing the body of an in-class inline
10245 function definition. (This processing will have taken place
10246 after the class definition is complete.) */
10249 finish_function (int flags)
10251 tree fndecl = current_function_decl;
10252 tree fntype, ctype = NULL_TREE;
10253 int inclass_inline = (flags & 2) != 0;
10256 /* When we get some parse errors, we can end up without a
10257 current_function_decl, so cope. */
10258 if (fndecl == NULL_TREE)
10259 return error_mark_node;
10261 if (DECL_NONSTATIC_MEMBER_FUNCTION_P (fndecl)
10262 && DECL_VIRTUAL_P (fndecl)
10263 && !processing_template_decl)
10265 tree fnclass = DECL_CONTEXT (fndecl);
10266 if (fndecl == CLASSTYPE_KEY_METHOD (fnclass))
10267 keyed_classes = tree_cons (NULL_TREE, fnclass, keyed_classes);
10270 nested = function_depth > 1;
10271 fntype = TREE_TYPE (fndecl);
10273 /* TREE_READONLY (fndecl) = 1;
10274 This caused &foo to be of type ptr-to-const-function
10275 which then got a warning when stored in a ptr-to-function variable. */
10277 my_friendly_assert (building_stmt_tree (), 20000911);
10279 /* For a cloned function, we've already got all the code we need;
10280 there's no need to add any extra bits. */
10281 if (!DECL_CLONED_FUNCTION_P (fndecl))
10283 if (DECL_MAIN_P (current_function_decl))
10285 /* Make it so that `main' always returns 0 by default. */
10287 finish_return_stmt (integer_one_node);
10289 finish_return_stmt (integer_zero_node);
10293 /* Finish dealing with exception specifiers. */
10294 if (flag_exceptions && !processing_template_decl
10295 && flag_enforce_eh_specs
10296 && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
10297 finish_eh_spec_block (TYPE_RAISES_EXCEPTIONS
10298 (TREE_TYPE (current_function_decl)),
10299 current_eh_spec_block);
10302 /* If we're saving up tree structure, tie off the function now. */
10303 DECL_SAVED_TREE (fndecl) = pop_stmt_list (DECL_SAVED_TREE (fndecl));
10305 finish_fname_decls ();
10307 /* If this function can't throw any exceptions, remember that. */
10308 if (!processing_template_decl
10309 && !cp_function_chain->can_throw
10310 && !flag_non_call_exceptions)
10311 TREE_NOTHROW (fndecl) = 1;
10313 /* This must come after expand_function_end because cleanups might
10314 have declarations (from inline functions) that need to go into
10315 this function's blocks. */
10317 /* If the current binding level isn't the outermost binding level
10318 for this function, either there is a bug, or we have experienced
10319 syntax errors and the statement tree is malformed. */
10320 if (current_binding_level->kind != sk_function_parms)
10322 /* Make sure we have already experienced errors. */
10323 if (errorcount == 0)
10326 /* Throw away the broken statement tree and extra binding
10328 DECL_SAVED_TREE (fndecl) = alloc_stmt_list ();
10330 while (current_binding_level->kind != sk_function_parms)
10332 if (current_binding_level->kind == sk_class)
10333 pop_nested_class ();
10335 poplevel (0, 0, 0);
10338 poplevel (1, 0, 1);
10340 /* Statements should always be full-expressions at the outermost set
10341 of curly braces for a function. */
10342 my_friendly_assert (stmts_are_full_exprs_p (), 19990831);
10344 /* Set up the named return value optimization, if we can. Candidate
10345 variables are selected in check_return_value. */
10346 if (current_function_return_value)
10348 tree r = current_function_return_value;
10351 if (r != error_mark_node
10352 /* This is only worth doing for fns that return in memory--and
10353 simpler, since we don't have to worry about promoted modes. */
10354 && aggregate_value_p (TREE_TYPE (TREE_TYPE (fndecl)), fndecl)
10355 /* Only allow this for variables declared in the outer scope of
10356 the function so we know that their lifetime always ends with a
10357 return; see g++.dg/opt/nrv6.C. We could be more flexible if
10358 we were to do this optimization in tree-ssa. */
10359 && (outer = BLOCK_SUBBLOCKS (DECL_INITIAL (fndecl)))
10360 /* Skip the artificial function body block. */
10361 && (outer = BLOCK_SUBBLOCKS (outer))
10362 && chain_member (r, BLOCK_VARS (outer)))
10363 finalize_nrv (&DECL_SAVED_TREE (fndecl), r, DECL_RESULT (fndecl));
10365 current_function_return_value = NULL_TREE;
10368 /* Remember that we were in class scope. */
10369 if (current_class_name)
10370 ctype = current_class_type;
10372 /* Must mark the RESULT_DECL as being in this function. */
10373 DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
10375 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
10376 to the FUNCTION_DECL node itself. */
10377 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
10379 /* Save away current state, if appropriate. */
10380 if (!processing_template_decl)
10381 save_function_data (fndecl);
10383 /* Complain if there's just no return statement. */
10384 if (warn_return_type
10385 && TREE_CODE (TREE_TYPE (fntype)) != VOID_TYPE
10386 && !dependent_type_p (TREE_TYPE (fntype))
10387 && !current_function_returns_value && !current_function_returns_null
10388 /* Don't complain if we abort or throw. */
10389 && !current_function_returns_abnormally
10390 && !DECL_NAME (DECL_RESULT (fndecl))
10391 /* Normally, with -Wreturn-type, flow will complain. Unless we're an
10392 inline function, as we might never be compiled separately. */
10393 && (DECL_INLINE (fndecl) || processing_template_decl)
10394 /* Structor return values (if any) are set by the compiler. */
10395 && !DECL_CONSTRUCTOR_P (fndecl)
10396 && !DECL_DESTRUCTOR_P (fndecl))
10397 warning ("no return statement in function returning non-void");
10399 /* Store the end of the function, so that we get good line number
10400 info for the epilogue. */
10401 cfun->function_end_locus = input_location;
10403 /* Genericize before inlining. */
10404 if (!processing_template_decl)
10406 cp_genericize (fndecl);
10408 /* Handle attribute((warn_unused_result)). Relies on gimple input. */
10409 c_warn_unused_result (&DECL_SAVED_TREE (fndecl));
10412 /* We're leaving the context of this function, so zap cfun. It's still in
10413 DECL_STRUCT_FUNCTION, and we'll restore it in tree_rest_of_compilation. */
10415 current_function_decl = NULL;
10417 /* If this is an in-class inline definition, we may have to pop the
10418 bindings for the template parameters that we added in
10419 maybe_begin_member_template_processing when start_function was
10421 if (inclass_inline)
10422 maybe_end_member_template_processing ();
10424 /* Leave the scope of the class. */
10426 pop_nested_class ();
10432 /* Let the error reporting routines know that we're outside a
10433 function. For a nested function, this value is used in
10434 cxx_pop_function_context and then reset via pop_function_context. */
10435 current_function_decl = NULL_TREE;
10440 /* Create the FUNCTION_DECL for a function definition.
10441 DECLSPECS and DECLARATOR are the parts of the declaration;
10442 they describe the return type and the name of the function,
10443 but twisted together in a fashion that parallels the syntax of C.
10445 This function creates a binding context for the function body
10446 as well as setting up the FUNCTION_DECL in current_function_decl.
10448 Returns a FUNCTION_DECL on success.
10450 If the DECLARATOR is not suitable for a function (it defines a datum
10451 instead), we return 0, which tells yyparse to report a parse error.
10453 May return void_type_node indicating that this method is actually
10454 a friend. See grokfield for more details.
10456 Came here with a `.pushlevel' .
10458 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
10459 CHANGES TO CODE IN `grokfield'. */
10462 start_method (cp_decl_specifier_seq *declspecs,
10463 const cp_declarator *declarator, tree attrlist)
10465 tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
10468 if (fndecl == error_mark_node)
10469 return error_mark_node;
10471 if (fndecl == NULL || TREE_CODE (fndecl) != FUNCTION_DECL)
10473 error ("invalid member function declaration");
10474 return error_mark_node;
10478 cplus_decl_attributes (&fndecl, attrlist, 0);
10480 /* Pass friends other than inline friend functions back. */
10481 if (fndecl == void_type_node)
10484 if (DECL_IN_AGGR_P (fndecl))
10486 if (DECL_CONTEXT (fndecl)
10487 && TREE_CODE( DECL_CONTEXT (fndecl)) != NAMESPACE_DECL)
10488 error ("`%D' is already defined in class `%T'", fndecl,
10489 DECL_CONTEXT (fndecl));
10490 return void_type_node;
10493 check_template_shadow (fndecl);
10495 DECL_DECLARED_INLINE_P (fndecl) = 1;
10496 if (flag_default_inline)
10497 DECL_INLINE (fndecl) = 1;
10499 /* We process method specializations in finish_struct_1. */
10500 if (processing_template_decl && !DECL_TEMPLATE_SPECIALIZATION (fndecl))
10502 fndecl = push_template_decl (fndecl);
10503 if (fndecl == error_mark_node)
10507 if (! DECL_FRIEND_P (fndecl))
10509 if (TREE_CHAIN (fndecl))
10511 fndecl = copy_node (fndecl);
10512 TREE_CHAIN (fndecl) = NULL_TREE;
10514 grok_special_member_properties (fndecl);
10517 cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0);
10519 /* Make a place for the parms. */
10520 begin_scope (sk_function_parms, fndecl);
10522 DECL_IN_AGGR_P (fndecl) = 1;
10526 /* Go through the motions of finishing a function definition.
10527 We don't compile this method until after the whole class has
10530 FINISH_METHOD must return something that looks as though it
10531 came from GROKFIELD (since we are defining a method, after all).
10533 This is called after parsing the body of the function definition.
10534 STMTS is the chain of statements that makes up the function body.
10536 DECL is the ..._DECL that `start_method' provided. */
10539 finish_method (tree decl)
10541 tree fndecl = decl;
10546 if (decl == void_type_node)
10549 old_initial = DECL_INITIAL (fndecl);
10551 /* Undo the level for the parms (from start_method).
10552 This is like poplevel, but it causes nothing to be
10553 saved. Saving information here confuses symbol-table
10554 output routines. Besides, this information will
10555 be correctly output when this method is actually
10558 /* Clear out the meanings of the local variables of this level;
10559 also record in each decl which block it belongs to. */
10561 for (link = current_binding_level->names; link; link = TREE_CHAIN (link))
10563 if (DECL_NAME (link) != NULL_TREE)
10564 pop_binding (DECL_NAME (link), link);
10565 my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163);
10566 DECL_CONTEXT (link) = NULL_TREE;
10569 poplevel (0, 0, 0);
10571 DECL_INITIAL (fndecl) = old_initial;
10573 /* We used to check if the context of FNDECL was different from
10574 current_class_type as another way to get inside here. This didn't work
10575 for String.cc in libg++. */
10576 if (DECL_FRIEND_P (fndecl))
10578 CLASSTYPE_INLINE_FRIENDS (current_class_type)
10579 = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type));
10580 decl = void_type_node;
10587 /* VAR is a VAR_DECL. If its type is incomplete, remember VAR so that
10588 we can lay it out later, when and if its type becomes complete. */
10591 maybe_register_incomplete_var (tree var)
10593 my_friendly_assert (TREE_CODE (var) == VAR_DECL, 20020406);
10595 /* Keep track of variables with incomplete types. */
10596 if (!processing_template_decl && TREE_TYPE (var) != error_mark_node
10597 && DECL_EXTERNAL (var))
10599 tree inner_type = TREE_TYPE (var);
10601 while (TREE_CODE (inner_type) == ARRAY_TYPE)
10602 inner_type = TREE_TYPE (inner_type);
10603 inner_type = TYPE_MAIN_VARIANT (inner_type);
10605 if ((!COMPLETE_TYPE_P (inner_type) && CLASS_TYPE_P (inner_type))
10606 /* RTTI TD entries are created while defining the type_info. */
10607 || (TYPE_LANG_SPECIFIC (inner_type)
10608 && TYPE_BEING_DEFINED (inner_type)))
10609 incomplete_vars = tree_cons (inner_type, var, incomplete_vars);
10613 /* Called when a class type (given by TYPE) is defined. If there are
10614 any existing VAR_DECLs whose type hsa been completed by this
10615 declaration, update them now. */
10618 complete_vars (tree type)
10620 tree *list = &incomplete_vars;
10622 my_friendly_assert (CLASS_TYPE_P (type), 20020406);
10625 if (same_type_p (type, TREE_PURPOSE (*list)))
10627 tree var = TREE_VALUE (*list);
10628 /* Complete the type of the variable. The VAR_DECL itself
10629 will be laid out in expand_expr. */
10630 complete_type (TREE_TYPE (var));
10631 /* Remove this entry from the list. */
10632 *list = TREE_CHAIN (*list);
10635 list = &TREE_CHAIN (*list);
10638 /* Check for pending declarations which may have abstract type. */
10639 complete_type_check_abstract (type);
10642 /* If DECL is of a type which needs a cleanup, build that cleanup
10646 cxx_maybe_build_cleanup (tree decl)
10648 tree type = TREE_TYPE (decl);
10650 if (type != error_mark_node && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type))
10652 int flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
10655 if (TREE_CODE (type) == ARRAY_TYPE)
10659 cxx_mark_addressable (decl);
10660 rval = build_unary_op (ADDR_EXPR, decl, 0);
10663 /* Optimize for space over speed here. */
10664 if (! TYPE_USES_VIRTUAL_BASECLASSES (type)
10665 || flag_expensive_optimizations)
10666 flags |= LOOKUP_NONVIRTUAL;
10668 rval = build_delete (TREE_TYPE (rval), rval,
10669 sfk_complete_destructor, flags, 0);
10671 if (TYPE_USES_VIRTUAL_BASECLASSES (type)
10672 && ! TYPE_HAS_DESTRUCTOR (type))
10673 rval = build_compound_expr (rval, build_vbase_delete (type, decl));
10680 /* When a stmt has been parsed, this function is called. */
10687 /* DECL was originally constructed as a non-static member function,
10688 but turned out to be static. Update it accordingly. */
10691 revert_static_member_fn (tree decl)
10694 tree function = TREE_TYPE (decl);
10695 tree args = TYPE_ARG_TYPES (function);
10697 if (cp_type_quals (TREE_TYPE (TREE_VALUE (args)))
10698 != TYPE_UNQUALIFIED)
10699 error ("static member function `%#D' declared with type qualifiers",
10702 args = TREE_CHAIN (args);
10703 tmp = build_function_type (TREE_TYPE (function), args);
10704 tmp = build_qualified_type (tmp, cp_type_quals (function));
10705 tmp = build_exception_variant (tmp,
10706 TYPE_RAISES_EXCEPTIONS (function));
10707 TREE_TYPE (decl) = tmp;
10708 if (DECL_ARGUMENTS (decl))
10709 DECL_ARGUMENTS (decl) = TREE_CHAIN (DECL_ARGUMENTS (decl));
10710 DECL_STATIC_FUNCTION_P (decl) = 1;
10713 /* Initialize the variables used during compilation of a C++
10717 cxx_push_function_context (struct function * f)
10719 struct language_function *p = GGC_CNEW (struct language_function);
10722 /* Whenever we start a new function, we destroy temporaries in the
10724 current_stmt_tree ()->stmts_are_full_exprs_p = 1;
10730 if (DECL_SAVED_FUNCTION_DATA (fn))
10732 /* If we already parsed this function, and we're just expanding it
10733 now, restore saved state. */
10734 *cp_function_chain = *DECL_SAVED_FUNCTION_DATA (fn);
10736 /* We don't need the saved data anymore. Unless this is an inline
10737 function; we need the named return value info for
10738 declare_return_variable. */
10739 if (! DECL_INLINE (fn))
10740 DECL_SAVED_FUNCTION_DATA (fn) = NULL;
10745 /* Free the language-specific parts of F, now that we've finished
10746 compiling the function. */
10749 cxx_pop_function_context (struct function * f)
10754 /* Return which tree structure is used by T, or TS_CP_GENERIC if T is
10755 one of the language-independent trees. */
10757 enum cp_tree_node_structure_enum
10758 cp_tree_node_structure (union lang_tree_node * t)
10760 switch (TREE_CODE (&t->generic))
10762 case DEFAULT_ARG: return TS_CP_DEFAULT_ARG;
10763 case IDENTIFIER_NODE: return TS_CP_IDENTIFIER;
10764 case OVERLOAD: return TS_CP_OVERLOAD;
10765 case TEMPLATE_PARM_INDEX: return TS_CP_TPI;
10766 case TINST_LEVEL: return TS_CP_TINST_LEVEL;
10767 case PTRMEM_CST: return TS_CP_PTRMEM;
10768 case BASELINK: return TS_CP_BASELINK;
10769 default: return TS_CP_GENERIC;
10773 /* Build the void_list_node (void_type_node having been created). */
10775 build_void_list_node (void)
10777 tree t = build_tree_list (NULL_TREE, void_type_node);
10782 cp_missing_noreturn_ok_p (tree decl)
10784 /* A missing noreturn is ok for the `main' function. */
10785 return DECL_MAIN_P (decl);
10788 #include "gt-cp-decl.h"
10789 #include "gtype-cp.h"