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, cp_decl_specifier_seq *, int, int, tree);
68 static void record_unknown_type (tree, const char *);
69 static tree builtin_function_1 (const char *, tree, tree, int,
70 enum built_in_class, const char *,
72 static tree build_library_fn_1 (tree, enum tree_code, tree);
73 static int member_function_or_else (tree, tree, enum overload_flags);
74 static void bad_specifiers (tree, const char *, int, int, int, int,
76 static void check_for_uninitialized_const_var (tree);
77 static hashval_t typename_hash (const void *);
78 static int typename_compare (const void *, const void *);
79 static tree local_variable_p_walkfn (tree *, int *, void *);
80 static tree record_builtin_java_type (const char *, int);
81 static const char *tag_name (enum tag_types code);
82 static int walk_namespaces_r (tree, walk_namespaces_fn, void *);
83 static int walk_globals_r (tree, void*);
84 static int walk_vtables_r (tree, void*);
85 static tree make_label_decl (tree, int);
86 static void use_label (tree);
87 static void check_previous_goto_1 (tree, struct cp_binding_level *, tree,
89 static void check_previous_goto (struct named_label_use_list *);
90 static void check_switch_goto (struct cp_binding_level *);
91 static void check_previous_gotos (tree);
92 static void pop_label (tree, tree);
93 static void pop_labels (tree);
94 static void maybe_deduce_size_from_array_init (tree, tree);
95 static void layout_var_decl (tree);
96 static void maybe_commonize_var (tree);
97 static tree check_initializer (tree, tree, int, tree *);
98 static void make_rtl_for_nonlocal_decl (tree, tree, const char *);
99 static void save_function_data (tree);
100 static void check_function_type (tree, tree);
101 static void begin_constructor_body (void);
102 static void finish_constructor_body (void);
103 static void begin_destructor_body (void);
104 static void finish_destructor_body (void);
105 static tree create_array_type_for_decl (tree, tree, tree);
106 static tree get_atexit_node (void);
107 static tree get_dso_handle_node (void);
108 static tree start_cleanup_fn (void);
109 static void end_cleanup_fn (void);
110 static tree cp_make_fname_decl (tree, int);
111 static void initialize_predefined_identifiers (void);
112 static tree check_special_function_return_type
113 (special_function_kind, tree, tree);
114 static tree push_cp_library_fn (enum tree_code, tree);
115 static tree build_cp_library_fn (tree, enum tree_code, tree);
116 static void store_parm_decls (tree);
117 static void initialize_local_var (tree, tree);
118 static void expand_static_init (tree, tree);
119 static tree next_initializable_field (tree);
120 static tree reshape_init (tree, tree *);
121 static tree build_typename_type (tree, tree, tree);
123 /* Erroneous argument lists can use this *IFF* they do not modify it. */
124 tree error_mark_list;
126 /* The following symbols are subsumed in the cp_global_trees array, and
127 listed here individually for documentation purposes.
130 tree wchar_decl_node;
132 tree vtable_entry_type;
133 tree delta_type_node;
134 tree __t_desc_type_node;
135 tree ti_desc_type_node;
136 tree bltn_desc_type_node, ptr_desc_type_node;
137 tree ary_desc_type_node, func_desc_type_node, enum_desc_type_node;
138 tree class_desc_type_node, si_class_desc_type_node, vmi_class_desc_type_node;
139 tree ptm_desc_type_node;
140 tree base_desc_type_node;
142 tree class_type_node;
143 tree unknown_type_node;
145 Array type `vtable_entry_type[]'
148 tree vtbl_ptr_type_node;
155 A FUNCTION_DECL which can call `abort'. Not necessarily the
156 one that the user will declare, but sufficient to be called
157 by routines that want to abort the program.
161 The FUNCTION_DECL for the default `::operator delete'.
163 tree global_delete_fndecl;
166 tree type_info_type_node, tinfo_decl_id, tinfo_decl_type;
171 tree cp_global_trees[CPTI_MAX];
173 /* Indicates that there is a type value in some namespace, although
174 that is not necessarily in scope at the moment. */
176 tree global_type_node;
178 /* The node that holds the "name" of the global scope. */
179 tree global_scope_name;
181 /* Used only for jumps to as-yet undefined labels, since jumps to
182 defined labels can have their validity checked immediately. */
184 struct named_label_use_list GTY(())
186 struct cp_binding_level *binding_level;
189 location_t o_goto_locus;
190 struct named_label_use_list *next;
193 #define named_label_uses cp_function_chain->x_named_label_uses
195 #define local_names cp_function_chain->x_local_names
197 /* A list of objects which have constructors or destructors
198 which reside in the global scope. The decl is stored in
199 the TREE_VALUE slot and the initializer is stored
200 in the TREE_PURPOSE slot. */
201 tree static_aggregates;
205 /* A node for the integer constants 2, and 3. */
207 tree integer_two_node, integer_three_node;
209 /* A list of all LABEL_DECLs in the function that have names. Here so
210 we can clear out their names' definitions at the end of the
211 function, and so we can check the validity of jumps to these labels. */
213 struct named_label_list GTY(())
215 struct cp_binding_level *binding_level;
220 struct named_label_list *next;
221 unsigned int in_try_scope : 1;
222 unsigned int in_catch_scope : 1;
225 #define named_labels cp_function_chain->x_named_labels
227 /* The number of function bodies which we are currently processing.
228 (Zero if we are at namespace scope, one inside the body of a
229 function, two inside the body of a function in a local class, etc.) */
232 /* States indicating how grokdeclarator() should handle declspecs marked
233 with __attribute__((deprecated)). An object declared as
234 __attribute__((deprecated)) suppresses warnings of uses of other
237 enum deprecated_states {
242 static enum deprecated_states deprecated_state = DEPRECATED_NORMAL;
244 /* True if a declaration with an `extern' linkage specifier is being
246 bool have_extern_spec;
249 /* A TREE_LIST of VAR_DECLs. The TREE_PURPOSE is a RECORD_TYPE or
250 UNION_TYPE; the TREE_VALUE is a VAR_DECL with that type. At the
251 time the VAR_DECL was declared, the type was incomplete. */
253 static GTY(()) tree incomplete_vars;
255 /* Returns the kind of template specialization we are currently
256 processing, given that it's declaration contained N_CLASS_SCOPES
257 explicit scope qualifications. */
260 current_tmpl_spec_kind (int n_class_scopes)
262 int n_template_parm_scopes = 0;
263 int seen_specialization_p = 0;
264 int innermost_specialization_p = 0;
265 struct cp_binding_level *b;
267 /* Scan through the template parameter scopes. */
268 for (b = current_binding_level;
269 b->kind == sk_template_parms;
272 /* If we see a specialization scope inside a parameter scope,
273 then something is wrong. That corresponds to a declaration
276 template <class T> template <> ...
278 which is always invalid since [temp.expl.spec] forbids the
279 specialization of a class member template if the enclosing
280 class templates are not explicitly specialized as well. */
281 if (b->explicit_spec_p)
283 if (n_template_parm_scopes == 0)
284 innermost_specialization_p = 1;
286 seen_specialization_p = 1;
288 else if (seen_specialization_p == 1)
289 return tsk_invalid_member_spec;
291 ++n_template_parm_scopes;
294 /* Handle explicit instantiations. */
295 if (processing_explicit_instantiation)
297 if (n_template_parm_scopes != 0)
298 /* We've seen a template parameter list during an explicit
299 instantiation. For example:
301 template <class T> template void f(int);
303 This is erroneous. */
304 return tsk_invalid_expl_inst;
306 return tsk_expl_inst;
309 if (n_template_parm_scopes < n_class_scopes)
310 /* We've not seen enough template headers to match all the
311 specialized classes present. For example:
313 template <class T> void R<T>::S<T>::f(int);
315 This is invalid; there needs to be one set of template
316 parameters for each class. */
317 return tsk_insufficient_parms;
318 else if (n_template_parm_scopes == n_class_scopes)
319 /* We're processing a non-template declaration (even though it may
320 be a member of a template class.) For example:
322 template <class T> void S<T>::f(int);
324 The `class T' maches the `S<T>', leaving no template headers
325 corresponding to the `f'. */
327 else if (n_template_parm_scopes > n_class_scopes + 1)
328 /* We've got too many template headers. For example:
330 template <> template <class T> void f (T);
332 There need to be more enclosing classes. */
333 return tsk_excessive_parms;
335 /* This must be a template. It's of the form:
337 template <class T> template <class U> void S<T>::f(U);
339 This is a specialization if the innermost level was a
340 specialization; otherwise it's just a definition of the
342 return innermost_specialization_p ? tsk_expl_spec : tsk_template;
345 /* Exit the current scope. */
353 /* When a label goes out of scope, check to see if that label was used
354 in a valid manner, and issue any appropriate warnings or errors. */
357 pop_label (tree label, tree old_value)
359 if (!processing_template_decl)
361 if (DECL_INITIAL (label) == NULL_TREE)
365 cp_error_at ("label `%D' used but not defined", label);
366 #ifdef USE_MAPPED_LOCATION
367 location = input_location; /* FIXME want (input_filename, (line)0) */
369 location.file = input_filename;
372 /* Avoid crashing later. */
373 define_label (location, DECL_NAME (label));
375 else if (warn_unused_label && !TREE_USED (label))
376 cp_warning_at ("label `%D' defined but not used", label);
379 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), old_value);
382 /* At the end of a function, all labels declared within the function
383 go out of scope. BLOCK is the top-level block for the
387 pop_labels (tree block)
389 struct named_label_list *link;
391 /* Clear out the definitions of all label names, since their scopes
393 for (link = named_labels; link; link = link->next)
395 pop_label (link->label_decl, link->old_value);
396 /* Put the labels into the "variables" of the top-level block,
397 so debugger can see them. */
398 TREE_CHAIN (link->label_decl) = BLOCK_VARS (block);
399 BLOCK_VARS (block) = link->label_decl;
405 /* Exit a binding level.
406 Pop the level off, and restore the state of the identifier-decl mappings
407 that were in effect when this level was entered.
409 If KEEP == 1, this level had explicit declarations, so
410 and create a "block" (a BLOCK node) for the level
411 to record its declarations and subblocks for symbol table output.
413 If FUNCTIONBODY is nonzero, this level is the body of a function,
414 so create a block as if KEEP were set and also clear out all
417 If REVERSE is nonzero, reverse the order of decls before putting
418 them into the BLOCK. */
421 poplevel (int keep, int reverse, int functionbody)
424 /* The chain of decls was accumulated in reverse order.
425 Put it into forward order, just for cleanliness. */
427 int tmp = functionbody;
428 int real_functionbody;
432 int leaving_for_scope;
435 timevar_push (TV_NAME_LOOKUP);
440 my_friendly_assert (current_binding_level->kind != sk_class, 19990916);
442 real_functionbody = (current_binding_level->kind == sk_cleanup
443 ? ((functionbody = 0), tmp) : functionbody);
444 subblocks = functionbody >= 0 ? current_binding_level->blocks : 0;
446 my_friendly_assert (VEC_length(cp_class_binding,
447 current_binding_level->class_shadowed) == 0,
450 /* We used to use KEEP == 2 to indicate that the new block should go
451 at the beginning of the list of blocks at this binding level,
452 rather than the end. This hack is no longer used. */
453 my_friendly_assert (keep == 0 || keep == 1, 0);
455 if (current_binding_level->keep)
458 /* Any uses of undefined labels, and any defined labels, now operate
459 under constraints of next binding contour. */
460 if (cfun && !functionbody)
462 struct cp_binding_level *level_chain;
463 level_chain = current_binding_level->level_chain;
466 struct named_label_use_list *uses;
467 struct named_label_list *labels;
468 for (labels = named_labels; labels; labels = labels->next)
469 if (labels->binding_level == current_binding_level)
472 if (current_binding_level->kind == sk_try)
473 labels->in_try_scope = 1;
474 if (current_binding_level->kind == sk_catch)
475 labels->in_catch_scope = 1;
476 for (decl = labels->names_in_scope; decl;
477 decl = TREE_CHAIN (decl))
478 if (decl_jump_unsafe (decl))
479 labels->bad_decls = tree_cons (NULL_TREE, decl,
481 labels->binding_level = level_chain;
482 labels->names_in_scope = level_chain->names;
485 for (uses = named_label_uses; uses; uses = uses->next)
486 if (uses->binding_level == current_binding_level)
488 uses->binding_level = level_chain;
489 uses->names_in_scope = level_chain->names;
494 /* Get the decls in the order they were written.
495 Usually current_binding_level->names is in reverse order.
496 But parameter decls were previously put in forward order. */
499 current_binding_level->names
500 = decls = nreverse (current_binding_level->names);
502 decls = current_binding_level->names;
504 /* When not in function-at-a-time mode, expand_end_bindings will
505 warn about unused variables. But, in function-at-a-time mode
506 expand_end_bindings is not passed the list of variables in the
507 current scope, and therefore no warning is emitted. So, we
508 explicitly warn here. */
509 if (!processing_template_decl)
510 warn_about_unused_variables (getdecls ());
512 /* If there were any declarations or structure tags in that level,
513 or if this level is a function body,
514 create a BLOCK to record them for the life of this function. */
516 if (keep == 1 || functionbody)
517 block = make_node (BLOCK);
518 if (block != NULL_TREE)
520 BLOCK_VARS (block) = decls;
521 BLOCK_SUBBLOCKS (block) = subblocks;
524 /* In each subblock, record that this is its superior. */
526 for (link = subblocks; link; link = TREE_CHAIN (link))
527 BLOCK_SUPERCONTEXT (link) = block;
529 /* We still support the old for-scope rules, whereby the variables
530 in a for-init statement were in scope after the for-statement
531 ended. We only use the new rules if flag_new_for_scope is
534 = current_binding_level->kind == sk_for && flag_new_for_scope == 1;
536 /* Remove declarations for all the DECLs in this level. */
537 for (link = decls; link; link = TREE_CHAIN (link))
539 if (leaving_for_scope && TREE_CODE (link) == VAR_DECL
542 cxx_binding *outer_binding
543 = IDENTIFIER_BINDING (DECL_NAME (link))->previous;
547 ns_binding = IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (link));
549 ns_binding = NULL_TREE;
552 && outer_binding->scope == current_binding_level->level_chain)
553 /* We have something like:
558 and we are leaving the `for' scope. There's no reason to
559 keep the binding of the inner `i' in this case. */
560 pop_binding (DECL_NAME (link), link);
561 else if ((outer_binding
562 && (TREE_CODE (outer_binding->value) == TYPE_DECL))
563 || (ns_binding && TREE_CODE (ns_binding) == TYPE_DECL))
564 /* Here, we have something like:
572 We must pop the for-scope binding so we know what's a
573 type and what isn't. */
574 pop_binding (DECL_NAME (link), link);
577 /* Mark this VAR_DECL as dead so that we can tell we left it
578 there only for backward compatibility. */
579 DECL_DEAD_FOR_LOCAL (link) = 1;
581 /* Keep track of what should have happened when we
582 popped the binding. */
583 if (outer_binding && outer_binding->value)
584 DECL_SHADOWED_FOR_VAR (link) = outer_binding->value;
586 /* Add it to the list of dead variables in the next
587 outermost binding to that we can remove these when we
588 leave that binding. */
589 current_binding_level->level_chain->dead_vars_from_for
590 = tree_cons (NULL_TREE, link,
591 current_binding_level->level_chain->
594 /* Although we don't pop the cxx_binding, we do clear
595 its SCOPE since the scope is going away now. */
596 IDENTIFIER_BINDING (DECL_NAME (link))->scope = NULL;
601 /* Remove the binding. */
603 if (TREE_CODE (decl) == TREE_LIST)
604 decl = TREE_VALUE (decl);
606 pop_binding (DECL_NAME (decl), decl);
607 else if (TREE_CODE (decl) == OVERLOAD)
608 pop_binding (DECL_NAME (OVL_FUNCTION (decl)), decl);
614 /* Remove declarations for any `for' variables from inner scopes
615 that we kept around. */
616 for (link = current_binding_level->dead_vars_from_for;
617 link; link = TREE_CHAIN (link))
618 pop_binding (DECL_NAME (TREE_VALUE (link)), TREE_VALUE (link));
620 /* Restore the IDENTIFIER_TYPE_VALUEs. */
621 for (link = current_binding_level->type_shadowed;
622 link; link = TREE_CHAIN (link))
623 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link), TREE_VALUE (link));
625 /* Restore the IDENTIFIER_LABEL_VALUEs for local labels. */
626 for (link = current_binding_level->shadowed_labels;
628 link = TREE_CHAIN (link))
629 pop_label (TREE_VALUE (link), TREE_PURPOSE (link));
631 /* There may be OVERLOADs (wrapped in TREE_LISTs) on the BLOCK_VARs
632 list if a `using' declaration put them there. The debugging
633 back-ends won't understand OVERLOAD, so we remove them here.
634 Because the BLOCK_VARS are (temporarily) shared with
635 CURRENT_BINDING_LEVEL->NAMES we must do this fixup after we have
636 popped all the bindings. */
641 for (d = &BLOCK_VARS (block); *d; )
643 if (TREE_CODE (*d) == TREE_LIST)
644 *d = TREE_CHAIN (*d);
646 d = &TREE_CHAIN (*d);
650 /* If the level being exited is the top level of a function,
651 check over all the labels. */
654 /* Since this is the top level block of a function, the vars are
655 the function's parameters. Don't leave them in the BLOCK
656 because they are found in the FUNCTION_DECL instead. */
657 BLOCK_VARS (block) = 0;
661 kind = current_binding_level->kind;
662 if (kind == sk_cleanup)
666 /* If this is a temporary binding created for a cleanup, then we'll
667 have pushed a statement list level. Pop that, create a new
668 BIND_EXPR for the block, and insert it into the stream. */
669 stmt = pop_stmt_list (current_binding_level->statement_list);
670 stmt = c_build_bind_expr (block, stmt);
676 DECL_INITIAL (current_function_decl) = block;
678 current_binding_level->blocks
679 = chainon (current_binding_level->blocks, block);
681 /* If we did not make a block for the level just exited,
682 any blocks made for inner levels
683 (since they cannot be recorded as subblocks in that level)
684 must be carried forward so they will later become subblocks
685 of something else. */
687 current_binding_level->blocks
688 = chainon (current_binding_level->blocks, subblocks);
690 /* Each and every BLOCK node created here in `poplevel' is important
691 (e.g. for proper debugging information) so if we created one
692 earlier, mark it as "used". */
694 TREE_USED (block) = 1;
696 /* All temporary bindings created for cleanups are popped silently. */
697 if (kind == sk_cleanup)
700 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, block);
703 /* Delete the node BLOCK from the current binding level.
704 This is used for the block inside a stmt expr ({...})
705 so that the block can be reinserted where appropriate. */
708 delete_block (tree block)
711 if (current_binding_level->blocks == block)
712 current_binding_level->blocks = TREE_CHAIN (block);
713 for (t = current_binding_level->blocks; t;)
715 if (TREE_CHAIN (t) == block)
716 TREE_CHAIN (t) = TREE_CHAIN (block);
720 TREE_CHAIN (block) = NULL_TREE;
721 /* Clear TREE_USED which is always set by poplevel.
722 The flag is set again if insert_block is called. */
723 TREE_USED (block) = 0;
726 /* Insert BLOCK at the end of the list of subblocks of the
727 current binding level. This is used when a BIND_EXPR is expanded,
728 to handle the BLOCK node inside the BIND_EXPR. */
731 insert_block (tree block)
733 TREE_USED (block) = 1;
734 current_binding_level->blocks
735 = chainon (current_binding_level->blocks, block);
738 /* Returns nonzero if T is a virtual function table. */
741 vtable_decl_p (tree t, void* data ATTRIBUTE_UNUSED )
743 return (TREE_CODE (t) == VAR_DECL && DECL_VIRTUAL_P (t));
746 /* Returns nonzero if T is a TYPE_DECL for a type with virtual
750 vtype_decl_p (tree t, void *data ATTRIBUTE_UNUSED )
752 return (TREE_CODE (t) == TYPE_DECL
753 && TREE_CODE (TREE_TYPE (t)) == RECORD_TYPE
754 && TYPE_POLYMORPHIC_P (TREE_TYPE (t)));
757 struct walk_globals_data {
763 /* Walk the vtable declarations in NAMESPACE. Whenever one is found
764 for which P returns nonzero, call F with its address. If any call
765 to F returns a nonzero value, return a nonzero value. */
768 walk_vtables_r (tree namespace, void* data)
770 struct walk_globals_data* wgd = (struct walk_globals_data *) data;
771 walk_globals_fn f = wgd->f;
773 tree decl = NAMESPACE_LEVEL (namespace)->vtables;
776 for (; decl ; decl = TREE_CHAIN (decl))
777 result |= (*f) (&decl, d);
782 /* Walk the vtable declarations. Whenever one is found for which P
783 returns nonzero, call F with its address. If any call to F
784 returns a nonzero value, return a nonzero value. */
786 walk_vtables (walk_globals_pred p, walk_globals_fn f, void *data)
788 struct walk_globals_data wgd;
793 return walk_namespaces (walk_vtables_r, &wgd);
796 /* Walk all the namespaces contained NAMESPACE, including NAMESPACE
797 itself, calling F for each. The DATA is passed to F as well. */
800 walk_namespaces_r (tree namespace, walk_namespaces_fn f, void* data)
803 tree current = NAMESPACE_LEVEL (namespace)->namespaces;
805 result |= (*f) (namespace, data);
807 for (; current; current = TREE_CHAIN (current))
808 result |= walk_namespaces_r (current, f, data);
813 /* Walk all the namespaces, calling F for each. The DATA is passed to
817 walk_namespaces (walk_namespaces_fn f, void* data)
819 return walk_namespaces_r (global_namespace, f, data);
822 /* Walk the global declarations in NAMESPACE. Whenever one is found
823 for which P returns nonzero, call F with its address. If any call
824 to F returns a nonzero value, return a nonzero value. */
827 walk_globals_r (tree namespace, void* data)
829 struct walk_globals_data* wgd = (struct walk_globals_data *) data;
830 walk_globals_pred p = wgd->p;
831 walk_globals_fn f = wgd->f;
836 t = &NAMESPACE_LEVEL (namespace)->names;
843 result |= (*f) (t, d);
845 /* If F changed *T, then *T still points at the next item to
848 t = &TREE_CHAIN (*t);
854 /* Walk the global declarations. Whenever one is found for which P
855 returns true, call F with its address. If any call to F
856 returns true, return true. */
859 walk_globals (walk_globals_pred p, walk_globals_fn f, void *data)
861 struct walk_globals_data wgd;
866 return walk_namespaces (walk_globals_r, &wgd);
869 /* Call wrapup_globals_declarations for the globals in NAMESPACE. If
870 DATA is non-NULL, this is the last time we will call
871 wrapup_global_declarations for this NAMESPACE. */
874 wrapup_globals_for_namespace (tree namespace, void* data)
876 struct cp_binding_level *level = NAMESPACE_LEVEL (namespace);
877 varray_type statics = level->static_decls;
878 tree *vec = &VARRAY_TREE (statics, 0);
879 int len = VARRAY_ACTIVE_SIZE (statics);
880 int last_time = (data != 0);
884 check_global_declarations (vec, len);
888 /* Write out any globals that need to be output. */
889 return wrapup_global_declarations (vec, len);
893 /* In C++, you don't have to write `struct S' to refer to `S'; you
894 can just use `S'. We accomplish this by creating a TYPE_DECL as
895 if the user had written `typedef struct S S'. Create and return
896 the TYPE_DECL for TYPE. */
899 create_implicit_typedef (tree name, tree type)
903 decl = build_decl (TYPE_DECL, name, type);
904 DECL_ARTIFICIAL (decl) = 1;
905 /* There are other implicit type declarations, like the one *within*
906 a class that allows you to write `S::S'. We must distinguish
908 SET_DECL_IMPLICIT_TYPEDEF_P (decl);
909 TYPE_NAME (type) = decl;
914 /* Remember a local name for name-mangling purposes. */
917 push_local_name (tree decl)
922 timevar_push (TV_NAME_LOOKUP);
924 VARRAY_TREE_INIT (local_names, 8, "local_names");
926 name = DECL_NAME (decl);
928 nelts = VARRAY_ACTIVE_SIZE (local_names);
929 for (i = 0; i < nelts; i++)
931 t = VARRAY_TREE (local_names, i);
932 if (DECL_NAME (t) == name)
934 if (!DECL_LANG_SPECIFIC (decl))
935 retrofit_lang_decl (decl);
936 DECL_LANG_SPECIFIC (decl)->decl_flags.u2sel = 1;
937 if (DECL_LANG_SPECIFIC (t))
938 DECL_DISCRIMINATOR (decl) = DECL_DISCRIMINATOR (t) + 1;
940 DECL_DISCRIMINATOR (decl) = 1;
942 VARRAY_TREE (local_names, i) = decl;
943 timevar_pop (TV_NAME_LOOKUP);
948 VARRAY_PUSH_TREE (local_names, decl);
949 timevar_pop (TV_NAME_LOOKUP);
952 /* Subroutine of duplicate_decls: return truthvalue of whether
953 or not types of these decls match.
955 For C++, we must compare the parameter list so that `int' can match
956 `int&' in a parameter position, but `int&' is not confused with
960 decls_match (tree newdecl, tree olddecl)
964 if (newdecl == olddecl)
967 if (TREE_CODE (newdecl) != TREE_CODE (olddecl))
968 /* If the two DECLs are not even the same kind of thing, we're not
969 interested in their types. */
972 if (TREE_CODE (newdecl) == FUNCTION_DECL)
974 tree f1 = TREE_TYPE (newdecl);
975 tree f2 = TREE_TYPE (olddecl);
976 tree p1 = TYPE_ARG_TYPES (f1);
977 tree p2 = TYPE_ARG_TYPES (f2);
979 if (CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl)
980 && ! (DECL_EXTERN_C_P (newdecl)
981 && DECL_EXTERN_C_P (olddecl)))
984 if (TREE_CODE (f1) != TREE_CODE (f2))
987 if (same_type_p (TREE_TYPE (f1), TREE_TYPE (f2)))
989 if (p2 == NULL_TREE && DECL_EXTERN_C_P (olddecl)
990 && (DECL_BUILT_IN (olddecl)
991 #ifndef NO_IMPLICIT_EXTERN_C
992 || (DECL_IN_SYSTEM_HEADER (newdecl) && !DECL_CLASS_SCOPE_P (newdecl))
993 || (DECL_IN_SYSTEM_HEADER (olddecl) && !DECL_CLASS_SCOPE_P (olddecl))
997 types_match = self_promoting_args_p (p1);
998 if (p1 == void_list_node)
999 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
1001 #ifndef NO_IMPLICIT_EXTERN_C
1002 else if (p1 == NULL_TREE
1003 && (DECL_EXTERN_C_P (olddecl)
1004 && DECL_IN_SYSTEM_HEADER (olddecl)
1005 && !DECL_CLASS_SCOPE_P (olddecl))
1006 && (DECL_EXTERN_C_P (newdecl)
1007 && DECL_IN_SYSTEM_HEADER (newdecl)
1008 && !DECL_CLASS_SCOPE_P (newdecl)))
1010 types_match = self_promoting_args_p (p2);
1011 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
1015 types_match = compparms (p1, p2);
1020 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
1022 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl))
1023 != TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)))
1026 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
1027 DECL_TEMPLATE_PARMS (olddecl)))
1030 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
1031 types_match = same_type_p (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl)),
1032 TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl)));
1034 types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl),
1035 DECL_TEMPLATE_RESULT (newdecl));
1039 if (TREE_TYPE (newdecl) == error_mark_node)
1040 types_match = TREE_TYPE (olddecl) == error_mark_node;
1041 else if (TREE_TYPE (olddecl) == NULL_TREE)
1042 types_match = TREE_TYPE (newdecl) == NULL_TREE;
1043 else if (TREE_TYPE (newdecl) == NULL_TREE)
1046 types_match = comptypes (TREE_TYPE (newdecl),
1047 TREE_TYPE (olddecl),
1048 COMPARE_REDECLARATION);
1054 /* If NEWDECL is `static' and an `extern' was seen previously,
1055 warn about it. OLDDECL is the previous declaration.
1057 Note that this does not apply to the C++ case of declaring
1058 a variable `extern const' and then later `const'.
1060 Don't complain about built-in functions, since they are beyond
1061 the user's control. */
1064 warn_extern_redeclared_static (tree newdecl, tree olddecl)
1068 if (TREE_CODE (newdecl) == TYPE_DECL
1069 || TREE_CODE (newdecl) == TEMPLATE_DECL
1070 || TREE_CODE (newdecl) == CONST_DECL
1071 || TREE_CODE (newdecl) == NAMESPACE_DECL)
1074 /* Don't get confused by static member functions; that's a different
1076 if (TREE_CODE (newdecl) == FUNCTION_DECL
1077 && DECL_STATIC_FUNCTION_P (newdecl))
1080 /* If the old declaration was `static', or the new one isn't, then
1081 then everything is OK. */
1082 if (DECL_THIS_STATIC (olddecl) || !DECL_THIS_STATIC (newdecl))
1085 /* It's OK to declare a builtin function as `static'. */
1086 if (TREE_CODE (olddecl) == FUNCTION_DECL
1087 && DECL_ARTIFICIAL (olddecl))
1090 name = DECL_ASSEMBLER_NAME (newdecl);
1091 pedwarn ("`%D' was declared `extern' and later `static'", newdecl);
1092 cp_pedwarn_at ("previous declaration of `%D'", olddecl);
1095 /* If NEWDECL is a redeclaration of OLDDECL, merge the declarations.
1096 If the redeclaration is invalid, a diagnostic is issued, and the
1097 error_mark_node is returned. Otherwise, OLDDECL is returned.
1099 If NEWDECL is not a redeclaration of OLDDECL, NULL_TREE is
1103 duplicate_decls (tree newdecl, tree olddecl)
1105 unsigned olddecl_uid = DECL_UID (olddecl);
1106 int olddecl_friend = 0, types_match = 0;
1107 int new_defines_function = 0;
1109 if (newdecl == olddecl)
1112 types_match = decls_match (newdecl, olddecl);
1114 /* If either the type of the new decl or the type of the old decl is an
1115 error_mark_node, then that implies that we have already issued an
1116 error (earlier) for some bogus type specification, and in that case,
1117 it is rather pointless to harass the user with yet more error message
1118 about the same declaration, so just pretend the types match here. */
1119 if (TREE_TYPE (newdecl) == error_mark_node
1120 || TREE_TYPE (olddecl) == error_mark_node)
1123 if (DECL_P (olddecl)
1124 && TREE_CODE (newdecl) == FUNCTION_DECL
1125 && TREE_CODE (olddecl) == FUNCTION_DECL
1126 && (DECL_UNINLINABLE (newdecl) || DECL_UNINLINABLE (olddecl)))
1128 if (DECL_DECLARED_INLINE_P (newdecl)
1129 && DECL_UNINLINABLE (newdecl)
1130 && lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl)))
1131 /* Already warned elsewhere. */;
1132 else if (DECL_DECLARED_INLINE_P (olddecl)
1133 && DECL_UNINLINABLE (olddecl)
1134 && lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl)))
1135 /* Already warned. */;
1136 else if (DECL_DECLARED_INLINE_P (newdecl)
1137 && DECL_UNINLINABLE (olddecl)
1138 && lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl)))
1140 warning ("%Jfunction '%D' redeclared as inline", newdecl, newdecl);
1141 warning ("%Jprevious declaration of '%D' with attribute noinline",
1144 else if (DECL_DECLARED_INLINE_P (olddecl)
1145 && DECL_UNINLINABLE (newdecl)
1146 && lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl)))
1148 warning ("%Jfunction '%D' redeclared with attribute noinline",
1150 warning ("%Jprevious declaration of '%D' was inline",
1155 /* Check for redeclaration and other discrepancies. */
1156 if (TREE_CODE (olddecl) == FUNCTION_DECL
1157 && DECL_ARTIFICIAL (olddecl))
1159 if (TREE_CODE (newdecl) != FUNCTION_DECL)
1161 /* Avoid warnings redeclaring anticipated built-ins. */
1162 if (DECL_ANTICIPATED (olddecl))
1165 /* If you declare a built-in or predefined function name as static,
1166 the old definition is overridden, but optionally warn this was a
1167 bad choice of name. */
1168 if (! TREE_PUBLIC (newdecl))
1171 warning ("shadowing %s function `%#D'",
1172 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
1174 /* Discard the old built-in function. */
1177 /* If the built-in is not ansi, then programs can override
1178 it even globally without an error. */
1179 else if (! DECL_BUILT_IN (olddecl))
1180 warning ("library function `%#D' redeclared as non-function `%#D'",
1184 error ("declaration of `%#D'", newdecl);
1185 error ("conflicts with built-in declaration `%#D'",
1190 else if (!types_match)
1192 /* Avoid warnings redeclaring anticipated built-ins. */
1193 if (DECL_ANTICIPATED (olddecl))
1195 /* Deal with fileptr_type_node. FILE type is not known
1196 at the time we create the builtins. */
1199 for (t1 = TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
1200 t2 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
1202 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2))
1205 else if (TREE_VALUE (t2) == fileptr_type_node)
1207 tree t = TREE_VALUE (t1);
1209 if (TREE_CODE (t) == POINTER_TYPE
1210 && TYPE_NAME (TREE_TYPE (t))
1211 && DECL_NAME (TYPE_NAME (TREE_TYPE (t)))
1212 == get_identifier ("FILE")
1213 && compparms (TREE_CHAIN (t1), TREE_CHAIN (t2)))
1215 tree oldargs = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
1217 TYPE_ARG_TYPES (TREE_TYPE (olddecl))
1218 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
1219 types_match = decls_match (newdecl, olddecl);
1221 return duplicate_decls (newdecl, olddecl);
1222 TYPE_ARG_TYPES (TREE_TYPE (olddecl)) = oldargs;
1225 else if (! same_type_p (TREE_VALUE (t1), TREE_VALUE (t2)))
1228 else if ((DECL_EXTERN_C_P (newdecl)
1229 && DECL_EXTERN_C_P (olddecl))
1230 || compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
1231 TYPE_ARG_TYPES (TREE_TYPE (olddecl))))
1233 /* A near match; override the builtin. */
1235 if (TREE_PUBLIC (newdecl))
1237 warning ("new declaration `%#D'", newdecl);
1238 warning ("ambiguates built-in declaration `%#D'",
1241 else if (warn_shadow)
1242 warning ("shadowing %s function `%#D'",
1243 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
1247 /* Discard the old built-in function. */
1250 /* Replace the old RTL to avoid problems with inlining. */
1251 COPY_DECL_RTL (newdecl, olddecl);
1253 /* Even if the types match, prefer the new declarations type
1254 for anticipated built-ins, for exception lists, etc... */
1255 else if (DECL_ANTICIPATED (olddecl))
1257 tree type = TREE_TYPE (newdecl);
1258 tree attribs = (*targetm.merge_type_attributes)
1259 (TREE_TYPE (olddecl), type);
1261 type = cp_build_type_attribute_variant (type, attribs);
1262 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = type;
1265 /* Whether or not the builtin can throw exceptions has no
1266 bearing on this declarator. */
1267 TREE_NOTHROW (olddecl) = 0;
1269 if (DECL_THIS_STATIC (newdecl) && !DECL_THIS_STATIC (olddecl))
1271 /* If a builtin function is redeclared as `static', merge
1272 the declarations, but make the original one static. */
1273 DECL_THIS_STATIC (olddecl) = 1;
1274 TREE_PUBLIC (olddecl) = 0;
1276 /* Make the old declaration consistent with the new one so
1277 that all remnants of the builtin-ness of this function
1278 will be banished. */
1279 SET_DECL_LANGUAGE (olddecl, DECL_LANGUAGE (newdecl));
1280 COPY_DECL_RTL (newdecl, olddecl);
1283 else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
1285 if ((TREE_CODE (olddecl) == TYPE_DECL && DECL_ARTIFICIAL (olddecl)
1286 && TREE_CODE (newdecl) != TYPE_DECL
1287 && ! (TREE_CODE (newdecl) == TEMPLATE_DECL
1288 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL))
1289 || (TREE_CODE (newdecl) == TYPE_DECL && DECL_ARTIFICIAL (newdecl)
1290 && TREE_CODE (olddecl) != TYPE_DECL
1291 && ! (TREE_CODE (olddecl) == TEMPLATE_DECL
1292 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl))
1295 /* We do nothing special here, because C++ does such nasty
1296 things with TYPE_DECLs. Instead, just let the TYPE_DECL
1297 get shadowed, and know that if we need to find a TYPE_DECL
1298 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
1299 slot of the identifier. */
1303 if ((TREE_CODE (newdecl) == FUNCTION_DECL
1304 && DECL_FUNCTION_TEMPLATE_P (olddecl))
1305 || (TREE_CODE (olddecl) == FUNCTION_DECL
1306 && DECL_FUNCTION_TEMPLATE_P (newdecl)))
1309 error ("`%#D' redeclared as different kind of symbol", newdecl);
1310 if (TREE_CODE (olddecl) == TREE_LIST)
1311 olddecl = TREE_VALUE (olddecl);
1312 cp_error_at ("previous declaration of `%#D'", olddecl);
1314 return error_mark_node;
1316 else if (!types_match)
1318 if (CP_DECL_CONTEXT (newdecl) != CP_DECL_CONTEXT (olddecl))
1319 /* These are certainly not duplicate declarations; they're
1320 from different scopes. */
1323 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
1325 /* The name of a class template may not be declared to refer to
1326 any other template, class, function, object, namespace, value,
1327 or type in the same scope. */
1328 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
1329 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
1331 error ("declaration of template `%#D'", newdecl);
1332 cp_error_at ("conflicts with previous declaration `%#D'",
1335 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
1336 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
1337 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
1338 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))))
1339 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
1340 DECL_TEMPLATE_PARMS (olddecl))
1341 /* Template functions can be disambiguated by
1343 && same_type_p (TREE_TYPE (TREE_TYPE (newdecl)),
1344 TREE_TYPE (TREE_TYPE (olddecl))))
1346 error ("new declaration `%#D'", newdecl);
1347 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
1351 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1353 if (DECL_EXTERN_C_P (newdecl) && DECL_EXTERN_C_P (olddecl))
1355 error ("declaration of C function `%#D' conflicts with",
1357 cp_error_at ("previous declaration `%#D' here", olddecl);
1359 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
1360 TYPE_ARG_TYPES (TREE_TYPE (olddecl))))
1362 error ("new declaration `%#D'", newdecl);
1363 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
1370 error ("conflicting declaration '%#D'", newdecl);
1371 cp_error_at ("'%D' has a previous declaration as `%#D'",
1376 else if (TREE_CODE (newdecl) == FUNCTION_DECL
1377 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl)
1378 && (!DECL_TEMPLATE_INFO (newdecl)
1379 || (DECL_TI_TEMPLATE (newdecl)
1380 != DECL_TI_TEMPLATE (olddecl))))
1381 || (DECL_TEMPLATE_SPECIALIZATION (newdecl)
1382 && (!DECL_TEMPLATE_INFO (olddecl)
1383 || (DECL_TI_TEMPLATE (olddecl)
1384 != DECL_TI_TEMPLATE (newdecl))))))
1385 /* It's OK to have a template specialization and a non-template
1386 with the same type, or to have specializations of two
1387 different templates with the same type. Note that if one is a
1388 specialization, and the other is an instantiation of the same
1389 template, that we do not exit at this point. That situation
1390 can occur if we instantiate a template class, and then
1391 specialize one of its methods. This situation is valid, but
1392 the declarations must be merged in the usual way. */
1394 else if (TREE_CODE (newdecl) == FUNCTION_DECL
1395 && ((DECL_TEMPLATE_INSTANTIATION (olddecl)
1396 && !DECL_USE_TEMPLATE (newdecl))
1397 || (DECL_TEMPLATE_INSTANTIATION (newdecl)
1398 && !DECL_USE_TEMPLATE (olddecl))))
1399 /* One of the declarations is a template instantiation, and the
1400 other is not a template at all. That's OK. */
1402 else if (TREE_CODE (newdecl) == NAMESPACE_DECL
1403 && DECL_NAMESPACE_ALIAS (newdecl)
1404 && DECL_NAMESPACE_ALIAS (newdecl) == DECL_NAMESPACE_ALIAS (olddecl))
1405 /* In [namespace.alias] we have:
1407 In a declarative region, a namespace-alias-definition can be
1408 used to redefine a namespace-alias declared in that declarative
1409 region to refer only to the namespace to which it already
1412 Therefore, if we encounter a second alias directive for the same
1413 alias, we can just ignore the second directive. */
1417 const char *errmsg = redeclaration_error_message (newdecl, olddecl);
1420 error (errmsg, newdecl);
1421 if (DECL_NAME (olddecl) != NULL_TREE)
1422 cp_error_at ((DECL_INITIAL (olddecl)
1423 && namespace_bindings_p ())
1424 ? "`%#D' previously defined here"
1425 : "`%#D' previously declared here", olddecl);
1426 return error_mark_node;
1428 else if (TREE_CODE (olddecl) == FUNCTION_DECL
1429 && DECL_INITIAL (olddecl) != NULL_TREE
1430 && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE
1431 && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE)
1433 /* Prototype decl follows defn w/o prototype. */
1434 cp_warning_at ("prototype for `%#D'", newdecl);
1435 warning ("%Jfollows non-prototype definition here", olddecl);
1437 else if (TREE_CODE (olddecl) == FUNCTION_DECL
1438 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
1440 /* extern "C" int foo ();
1441 int foo () { bar (); }
1443 if (current_lang_depth () == 0)
1444 SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl));
1447 cp_error_at ("previous declaration of `%#D' with %L linkage",
1448 olddecl, DECL_LANGUAGE (olddecl));
1449 error ("conflicts with new declaration with %L linkage",
1450 DECL_LANGUAGE (newdecl));
1454 if (DECL_LANG_SPECIFIC (olddecl) && DECL_USE_TEMPLATE (olddecl))
1456 else if (TREE_CODE (olddecl) == FUNCTION_DECL)
1458 tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
1459 tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
1462 if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
1463 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
1465 for (; t1 && t1 != void_list_node;
1466 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
1467 if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
1469 if (1 == simple_cst_equal (TREE_PURPOSE (t1),
1472 pedwarn ("default argument given for parameter %d of `%#D'",
1474 cp_pedwarn_at ("after previous specification in `%#D'",
1479 error ("default argument given for parameter %d of `%#D'",
1481 cp_error_at ("after previous specification in `%#D'",
1486 if (DECL_DECLARED_INLINE_P (newdecl)
1487 && ! DECL_DECLARED_INLINE_P (olddecl)
1488 && TREE_ADDRESSABLE (olddecl) && warn_inline)
1490 warning ("`%#D' was used before it was declared inline", newdecl);
1491 warning ("%Jprevious non-inline declaration here", olddecl);
1496 /* Do not merge an implicit typedef with an explicit one. In:
1500 typedef class A A __attribute__ ((foo));
1502 the attribute should apply only to the typedef. */
1503 if (TREE_CODE (olddecl) == TYPE_DECL
1504 && (DECL_IMPLICIT_TYPEDEF_P (olddecl)
1505 || DECL_IMPLICIT_TYPEDEF_P (newdecl)))
1508 /* If new decl is `static' and an `extern' was seen previously,
1510 warn_extern_redeclared_static (newdecl, olddecl);
1512 /* We have committed to returning 1 at this point. */
1513 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1515 /* Now that functions must hold information normally held
1516 by field decls, there is extra work to do so that
1517 declaration information does not get destroyed during
1519 if (DECL_VINDEX (olddecl))
1520 DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
1521 if (DECL_CONTEXT (olddecl))
1522 DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
1523 DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
1524 DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
1525 DECL_PURE_VIRTUAL_P (newdecl) |= DECL_PURE_VIRTUAL_P (olddecl);
1526 DECL_VIRTUAL_P (newdecl) |= DECL_VIRTUAL_P (olddecl);
1527 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl);
1528 DECL_THIS_STATIC (newdecl) |= DECL_THIS_STATIC (olddecl);
1529 if (DECL_OVERLOADED_OPERATOR_P (olddecl) != ERROR_MARK)
1530 SET_OVERLOADED_OPERATOR_CODE
1531 (newdecl, DECL_OVERLOADED_OPERATOR_P (olddecl));
1532 new_defines_function = DECL_INITIAL (newdecl) != NULL_TREE;
1534 /* Optionally warn about more than one declaration for the same
1535 name, but don't warn about a function declaration followed by a
1537 if (warn_redundant_decls && ! DECL_ARTIFICIAL (olddecl)
1538 && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
1539 /* Don't warn about extern decl followed by definition. */
1540 && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))
1541 /* Don't warn about friends, let add_friend take care of it. */
1542 && ! (DECL_FRIEND_P (newdecl) || DECL_FRIEND_P (olddecl)))
1544 warning ("redundant redeclaration of `%D' in same scope", newdecl);
1545 cp_warning_at ("previous declaration of `%D'", olddecl);
1549 /* Deal with C++: must preserve virtual function table size. */
1550 if (TREE_CODE (olddecl) == TYPE_DECL)
1552 tree newtype = TREE_TYPE (newdecl);
1553 tree oldtype = TREE_TYPE (olddecl);
1555 if (newtype != error_mark_node && oldtype != error_mark_node
1556 && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
1557 CLASSTYPE_FRIEND_CLASSES (newtype)
1558 = CLASSTYPE_FRIEND_CLASSES (oldtype);
1560 DECL_ORIGINAL_TYPE (newdecl) = DECL_ORIGINAL_TYPE (olddecl);
1563 /* Copy all the DECL_... slots specified in the new decl
1564 except for any that we copy here from the old type. */
1565 DECL_ATTRIBUTES (newdecl)
1566 = (*targetm.merge_decl_attributes) (olddecl, newdecl);
1568 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
1570 TREE_TYPE (olddecl) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl));
1571 DECL_TEMPLATE_SPECIALIZATIONS (olddecl)
1572 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl),
1573 DECL_TEMPLATE_SPECIALIZATIONS (newdecl));
1575 /* If the new declaration is a definition, update the file and
1576 line information on the declaration. */
1577 if (DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)) == NULL_TREE
1578 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl)) != NULL_TREE)
1580 DECL_SOURCE_LOCATION (olddecl)
1581 = DECL_SOURCE_LOCATION (DECL_TEMPLATE_RESULT (olddecl))
1582 = DECL_SOURCE_LOCATION (newdecl);
1583 if (DECL_FUNCTION_TEMPLATE_P (newdecl))
1584 DECL_ARGUMENTS (DECL_TEMPLATE_RESULT (olddecl))
1585 = DECL_ARGUMENTS (DECL_TEMPLATE_RESULT (newdecl));
1588 if (DECL_FUNCTION_TEMPLATE_P (newdecl))
1590 DECL_INLINE (DECL_TEMPLATE_RESULT (olddecl))
1591 |= DECL_INLINE (DECL_TEMPLATE_RESULT (newdecl));
1592 DECL_DECLARED_INLINE_P (DECL_TEMPLATE_RESULT (olddecl))
1593 |= DECL_DECLARED_INLINE_P (DECL_TEMPLATE_RESULT (newdecl));
1601 /* Automatically handles default parameters. */
1602 tree oldtype = TREE_TYPE (olddecl);
1605 /* Merge the data types specified in the two decls. */
1606 newtype = merge_types (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
1608 /* If merge_types produces a non-typedef type, just use the old type. */
1609 if (TREE_CODE (newdecl) == TYPE_DECL
1610 && newtype == DECL_ORIGINAL_TYPE (newdecl))
1613 if (TREE_CODE (newdecl) == VAR_DECL)
1615 DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
1616 DECL_INITIALIZED_P (newdecl) |= DECL_INITIALIZED_P (olddecl);
1617 DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (newdecl)
1618 |= DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (olddecl);
1621 /* Do this after calling `merge_types' so that default
1622 parameters don't confuse us. */
1623 else if (TREE_CODE (newdecl) == FUNCTION_DECL
1624 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))
1625 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl))))
1627 TREE_TYPE (newdecl) = build_exception_variant (newtype,
1628 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)));
1629 TREE_TYPE (olddecl) = build_exception_variant (newtype,
1630 TYPE_RAISES_EXCEPTIONS (oldtype));
1632 if ((pedantic || ! DECL_IN_SYSTEM_HEADER (olddecl))
1633 && ! DECL_IS_BUILTIN (olddecl)
1635 && !comp_except_specs (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)),
1636 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl)), 1))
1638 error ("declaration of `%F' throws different exceptions",
1640 cp_error_at ("than previous declaration `%F'", olddecl);
1643 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
1645 /* Lay the type out, unless already done. */
1646 if (! same_type_p (newtype, oldtype)
1647 && TREE_TYPE (newdecl) != error_mark_node
1648 && !(processing_template_decl && uses_template_parms (newdecl)))
1649 layout_type (TREE_TYPE (newdecl));
1651 if ((TREE_CODE (newdecl) == VAR_DECL
1652 || TREE_CODE (newdecl) == PARM_DECL
1653 || TREE_CODE (newdecl) == RESULT_DECL
1654 || TREE_CODE (newdecl) == FIELD_DECL
1655 || TREE_CODE (newdecl) == TYPE_DECL)
1656 && !(processing_template_decl && uses_template_parms (newdecl)))
1657 layout_decl (newdecl, 0);
1659 /* Merge the type qualifiers. */
1660 if (TREE_READONLY (newdecl))
1661 TREE_READONLY (olddecl) = 1;
1662 if (TREE_THIS_VOLATILE (newdecl))
1663 TREE_THIS_VOLATILE (olddecl) = 1;
1665 /* Merge the initialization information. */
1666 if (DECL_INITIAL (newdecl) == NULL_TREE
1667 && DECL_INITIAL (olddecl) != NULL_TREE)
1669 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
1670 DECL_SOURCE_LOCATION (newdecl) = DECL_SOURCE_LOCATION (olddecl);
1671 if (CAN_HAVE_FULL_LANG_DECL_P (newdecl)
1672 && DECL_LANG_SPECIFIC (newdecl)
1673 && DECL_LANG_SPECIFIC (olddecl))
1675 DECL_SAVED_TREE (newdecl) = DECL_SAVED_TREE (olddecl);
1676 DECL_STRUCT_FUNCTION (newdecl) = DECL_STRUCT_FUNCTION (olddecl);
1680 /* Merge the section attribute.
1681 We want to issue an error if the sections conflict but that must be
1682 done later in decl_attributes since we are called before attributes
1684 if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
1685 DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
1687 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1689 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (newdecl)
1690 |= DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (olddecl);
1691 DECL_NO_LIMIT_STACK (newdecl) |= DECL_NO_LIMIT_STACK (olddecl);
1692 TREE_THIS_VOLATILE (newdecl) |= TREE_THIS_VOLATILE (olddecl);
1693 TREE_READONLY (newdecl) |= TREE_READONLY (olddecl);
1694 TREE_NOTHROW (newdecl) |= TREE_NOTHROW (olddecl);
1695 DECL_IS_MALLOC (newdecl) |= DECL_IS_MALLOC (olddecl);
1696 DECL_IS_PURE (newdecl) |= DECL_IS_PURE (olddecl);
1697 /* Keep the old RTL. */
1698 COPY_DECL_RTL (olddecl, newdecl);
1700 else if (TREE_CODE (newdecl) == VAR_DECL
1701 && (DECL_SIZE (olddecl) || !DECL_SIZE (newdecl)))
1703 /* Keep the old RTL. We cannot keep the old RTL if the old
1704 declaration was for an incomplete object and the new
1705 declaration is not since many attributes of the RTL will
1707 COPY_DECL_RTL (olddecl, newdecl);
1710 /* If cannot merge, then use the new type and qualifiers,
1711 and don't preserve the old rtl. */
1714 /* Clean out any memory we had of the old declaration. */
1715 tree oldstatic = value_member (olddecl, static_aggregates);
1717 TREE_VALUE (oldstatic) = error_mark_node;
1719 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
1720 TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
1721 TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
1722 TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
1725 /* Merge the storage class information. */
1726 merge_weak (newdecl, olddecl);
1728 DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl);
1729 DECL_DEFER_OUTPUT (newdecl) |= DECL_DEFER_OUTPUT (olddecl);
1730 TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
1731 TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
1732 if (! DECL_EXTERNAL (olddecl))
1733 DECL_EXTERNAL (newdecl) = 0;
1735 if (DECL_LANG_SPECIFIC (newdecl) && DECL_LANG_SPECIFIC (olddecl))
1737 DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
1738 DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
1739 DECL_COMDAT (newdecl) |= DECL_COMDAT (olddecl);
1740 DECL_TEMPLATE_INSTANTIATED (newdecl)
1741 |= DECL_TEMPLATE_INSTANTIATED (olddecl);
1742 /* Don't really know how much of the language-specific
1743 values we should copy from old to new. */
1744 DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
1745 DECL_LANG_SPECIFIC (newdecl)->decl_flags.u2 =
1746 DECL_LANG_SPECIFIC (olddecl)->decl_flags.u2;
1747 DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
1748 DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
1749 DECL_INITIALIZED_IN_CLASS_P (newdecl)
1750 |= DECL_INITIALIZED_IN_CLASS_P (olddecl);
1751 olddecl_friend = DECL_FRIEND_P (olddecl);
1753 /* Only functions have DECL_BEFRIENDING_CLASSES. */
1754 if (TREE_CODE (newdecl) == FUNCTION_DECL
1755 || DECL_FUNCTION_TEMPLATE_P (newdecl))
1757 DECL_BEFRIENDING_CLASSES (newdecl)
1758 = chainon (DECL_BEFRIENDING_CLASSES (newdecl),
1759 DECL_BEFRIENDING_CLASSES (olddecl));
1760 /* DECL_THUNKS is only valid for virtual functions,
1761 otherwise it is a DECL_FRIEND_CONTEXT. */
1762 if (DECL_VIRTUAL_P (newdecl))
1763 DECL_THUNKS (newdecl) = DECL_THUNKS (olddecl);
1767 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1769 if (DECL_TEMPLATE_INSTANTIATION (olddecl)
1770 && !DECL_TEMPLATE_INSTANTIATION (newdecl))
1772 /* If newdecl is not a specialization, then it is not a
1773 template-related function at all. And that means that we
1774 should have exited above, returning 0. */
1775 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl),
1778 if (TREE_USED (olddecl))
1779 /* From [temp.expl.spec]:
1781 If a template, a member template or the member of a class
1782 template is explicitly specialized then that
1783 specialization shall be declared before the first use of
1784 that specialization that would cause an implicit
1785 instantiation to take place, in every translation unit in
1786 which such a use occurs. */
1787 error ("explicit specialization of %D after first use",
1790 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl);
1792 /* [temp.expl.spec/14] We don't inline explicit specialization
1793 just because the primary template says so. */
1797 if (DECL_PENDING_INLINE_INFO (newdecl) == 0)
1798 DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
1800 DECL_DECLARED_INLINE_P (newdecl) |= DECL_DECLARED_INLINE_P (olddecl);
1802 /* If either decl says `inline', this fn is inline, unless
1803 its definition was passed already. */
1804 if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE)
1805 DECL_INLINE (olddecl) = 1;
1806 DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
1808 DECL_UNINLINABLE (newdecl) = DECL_UNINLINABLE (olddecl)
1809 = (DECL_UNINLINABLE (newdecl) || DECL_UNINLINABLE (olddecl));
1812 /* Preserve abstractness on cloned [cd]tors. */
1813 DECL_ABSTRACT (newdecl) = DECL_ABSTRACT (olddecl);
1817 SET_DECL_LANGUAGE (olddecl, DECL_LANGUAGE (newdecl));
1818 COPY_DECL_ASSEMBLER_NAME (newdecl, olddecl);
1819 COPY_DECL_RTL (newdecl, olddecl);
1821 if (! types_match || new_defines_function)
1823 /* These need to be copied so that the names are available.
1824 Note that if the types do match, we'll preserve inline
1825 info and other bits, but if not, we won't. */
1826 DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
1827 DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
1829 if (new_defines_function)
1830 /* If defining a function declared with other language
1831 linkage, use the previously declared language linkage. */
1832 SET_DECL_LANGUAGE (newdecl, DECL_LANGUAGE (olddecl));
1833 else if (types_match)
1835 /* If redeclaring a builtin function, and not a definition,
1836 it stays built in. */
1837 if (DECL_BUILT_IN (olddecl))
1839 DECL_BUILT_IN_CLASS (newdecl) = DECL_BUILT_IN_CLASS (olddecl);
1840 DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
1841 /* If we're keeping the built-in definition, keep the rtl,
1842 regardless of declaration matches. */
1843 COPY_DECL_RTL (olddecl, newdecl);
1846 DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
1847 /* Don't clear out the arguments if we're redefining a function. */
1848 if (DECL_ARGUMENTS (olddecl))
1849 DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
1852 else if (TREE_CODE (newdecl) == NAMESPACE_DECL)
1853 NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
1855 /* Now preserve various other info from the definition. */
1856 TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
1857 TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
1858 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
1859 COPY_DECL_ASSEMBLER_NAME (olddecl, newdecl);
1861 /* If either declaration has a nondefault visibility, use it. */
1862 if (DECL_VISIBILITY (olddecl) != VISIBILITY_DEFAULT)
1864 if (DECL_VISIBILITY (newdecl) != VISIBILITY_DEFAULT
1865 && DECL_VISIBILITY (newdecl) != DECL_VISIBILITY (olddecl))
1867 warning ("%J'%D': visibility attribute ignored because it",
1869 warning ("%Jconflicts with previous declaration here", olddecl);
1871 DECL_VISIBILITY (newdecl) = DECL_VISIBILITY (olddecl);
1874 if (TREE_CODE (newdecl) == FUNCTION_DECL)
1878 function_size = sizeof (struct tree_decl);
1880 memcpy ((char *) olddecl + sizeof (struct tree_common),
1881 (char *) newdecl + sizeof (struct tree_common),
1882 function_size - sizeof (struct tree_common));
1884 if (DECL_TEMPLATE_INSTANTIATION (newdecl))
1885 /* If newdecl is a template instantiation, it is possible that
1886 the following sequence of events has occurred:
1888 o A friend function was declared in a class template. The
1889 class template was instantiated.
1891 o The instantiation of the friend declaration was
1892 recorded on the instantiation list, and is newdecl.
1894 o Later, however, instantiate_class_template called pushdecl
1895 on the newdecl to perform name injection. But, pushdecl in
1896 turn called duplicate_decls when it discovered that another
1897 declaration of a global function with the same name already
1900 o Here, in duplicate_decls, we decided to clobber newdecl.
1902 If we're going to do that, we'd better make sure that
1903 olddecl, and not newdecl, is on the list of
1904 instantiations so that if we try to do the instantiation
1905 again we won't get the clobbered declaration. */
1906 reregister_specialization (newdecl,
1907 DECL_TI_TEMPLATE (newdecl),
1912 memcpy ((char *) olddecl + sizeof (struct tree_common),
1913 (char *) newdecl + sizeof (struct tree_common),
1914 sizeof (struct tree_decl) - sizeof (struct tree_common)
1915 + TREE_CODE_LENGTH (TREE_CODE (newdecl)) * sizeof (char *));
1918 DECL_UID (olddecl) = olddecl_uid;
1920 DECL_FRIEND_P (olddecl) = 1;
1922 /* NEWDECL contains the merged attribute lists.
1923 Update OLDDECL to be the same. */
1924 DECL_ATTRIBUTES (olddecl) = DECL_ATTRIBUTES (newdecl);
1926 /* If OLDDECL had its DECL_RTL instantiated, re-invoke make_decl_rtl
1927 so that encode_section_info has a chance to look at the new decl
1928 flags and attributes. */
1929 if (DECL_RTL_SET_P (olddecl)
1930 && (TREE_CODE (olddecl) == FUNCTION_DECL
1931 || (TREE_CODE (olddecl) == VAR_DECL
1932 && TREE_STATIC (olddecl))))
1933 make_decl_rtl (olddecl, NULL);
1938 /* Return zero if the declaration NEWDECL is valid
1939 when the declaration OLDDECL (assumed to be for the same name)
1940 has already been seen.
1941 Otherwise return an error message format string with a %s
1942 where the identifier should go. */
1945 redeclaration_error_message (tree newdecl, tree olddecl)
1947 if (TREE_CODE (newdecl) == TYPE_DECL)
1949 /* Because C++ can put things into name space for free,
1950 constructs like "typedef struct foo { ... } foo"
1951 would look like an erroneous redeclaration. */
1952 if (same_type_p (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
1955 return "redefinition of `%#D'";
1957 else if (TREE_CODE (newdecl) == FUNCTION_DECL)
1959 /* If this is a pure function, its olddecl will actually be
1960 the original initialization to `0' (which we force to call
1961 abort()). Don't complain about redefinition in this case. */
1962 if (DECL_LANG_SPECIFIC (olddecl) && DECL_PURE_VIRTUAL_P (olddecl))
1965 /* If both functions come from different namespaces, this is not
1966 a redeclaration - this is a conflict with a used function. */
1967 if (DECL_NAMESPACE_SCOPE_P (olddecl)
1968 && DECL_CONTEXT (olddecl) != DECL_CONTEXT (newdecl))
1969 return "`%D' conflicts with used function";
1971 /* We'll complain about linkage mismatches in
1972 warn_extern_redeclared_static. */
1974 /* Defining the same name twice is no good. */
1975 if (DECL_INITIAL (olddecl) != NULL_TREE
1976 && DECL_INITIAL (newdecl) != NULL_TREE)
1978 if (DECL_NAME (olddecl) == NULL_TREE)
1979 return "`%#D' not declared in class";
1981 return "redefinition of `%#D'";
1985 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
1989 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
1991 if (COMPLETE_TYPE_P (TREE_TYPE (newdecl))
1992 && COMPLETE_TYPE_P (TREE_TYPE (olddecl)))
1993 return "redefinition of `%#D'";
1997 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) != FUNCTION_DECL
1998 || (DECL_TEMPLATE_RESULT (newdecl)
1999 == DECL_TEMPLATE_RESULT (olddecl)))
2002 nt = DECL_TEMPLATE_RESULT (newdecl);
2003 if (DECL_TEMPLATE_INFO (nt))
2004 nt = DECL_TEMPLATE_RESULT (template_for_substitution (nt));
2005 ot = DECL_TEMPLATE_RESULT (olddecl);
2006 if (DECL_TEMPLATE_INFO (ot))
2007 ot = DECL_TEMPLATE_RESULT (template_for_substitution (ot));
2008 if (DECL_INITIAL (nt) && DECL_INITIAL (ot))
2009 return "redefinition of `%#D'";
2013 else if (toplevel_bindings_p () || DECL_NAMESPACE_SCOPE_P (newdecl))
2015 /* Objects declared at top level: */
2016 /* If at least one is a reference, it's ok. */
2017 if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
2019 /* Reject two definitions. */
2020 return "redefinition of `%#D'";
2024 /* Objects declared with block scope: */
2025 /* Reject two definitions, and reject a definition
2026 together with an external reference. */
2027 if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
2028 return "redeclaration of `%#D'";
2033 /* Create a new label, named ID. */
2036 make_label_decl (tree id, int local_p)
2040 decl = build_decl (LABEL_DECL, id, void_type_node);
2042 DECL_CONTEXT (decl) = current_function_decl;
2043 DECL_MODE (decl) = VOIDmode;
2044 C_DECLARED_LABEL_FLAG (decl) = local_p;
2046 /* Say where one reference is to the label, for the sake of the
2047 error if it is not defined. */
2048 DECL_SOURCE_LOCATION (decl) = input_location;
2050 /* Record the fact that this identifier is bound to this label. */
2051 SET_IDENTIFIER_LABEL_VALUE (id, decl);
2056 /* Record this label on the list of used labels so that we can check
2057 at the end of the function to see whether or not the label was
2058 actually defined, and so we can check when the label is defined whether
2059 this use is valid. */
2062 use_label (tree decl)
2064 if (named_label_uses == NULL
2065 || named_label_uses->names_in_scope != current_binding_level->names
2066 || named_label_uses->label_decl != decl)
2068 struct named_label_use_list *new_ent;
2069 new_ent = ggc_alloc (sizeof (struct named_label_use_list));
2070 new_ent->label_decl = decl;
2071 new_ent->names_in_scope = current_binding_level->names;
2072 new_ent->binding_level = current_binding_level;
2073 new_ent->o_goto_locus = input_location;
2074 new_ent->next = named_label_uses;
2075 named_label_uses = new_ent;
2079 /* Look for a label named ID in the current function. If one cannot
2080 be found, create one. (We keep track of used, but undefined,
2081 labels, and complain about them at the end of a function.) */
2084 lookup_label (tree id)
2087 struct named_label_list *ent;
2089 timevar_push (TV_NAME_LOOKUP);
2090 /* You can't use labels at global scope. */
2091 if (current_function_decl == NULL_TREE)
2093 error ("label `%E' referenced outside of any function", id);
2094 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
2097 /* See if we've already got this label. */
2098 decl = IDENTIFIER_LABEL_VALUE (id);
2099 if (decl != NULL_TREE && DECL_CONTEXT (decl) == current_function_decl)
2100 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
2102 /* Record this label on the list of labels used in this function.
2103 We do this before calling make_label_decl so that we get the
2104 IDENTIFIER_LABEL_VALUE before the new label is declared. */
2105 ent = ggc_alloc_cleared (sizeof (struct named_label_list));
2106 ent->old_value = IDENTIFIER_LABEL_VALUE (id);
2107 ent->next = named_labels;
2110 /* We need a new label. */
2111 decl = make_label_decl (id, /*local_p=*/0);
2113 /* Now fill in the information we didn't have before. */
2114 ent->label_decl = decl;
2116 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
2119 /* Declare a local label named ID. */
2122 declare_local_label (tree id)
2126 /* Add a new entry to the SHADOWED_LABELS list so that when we leave
2127 this scope we can restore the old value of
2128 IDENTIFIER_TYPE_VALUE. */
2129 current_binding_level->shadowed_labels
2130 = tree_cons (IDENTIFIER_LABEL_VALUE (id), NULL_TREE,
2131 current_binding_level->shadowed_labels);
2132 /* Look for the label. */
2133 decl = make_label_decl (id, /*local_p=*/1);
2134 /* Now fill in the information we didn't have before. */
2135 TREE_VALUE (current_binding_level->shadowed_labels) = decl;
2140 /* Returns nonzero if it is ill-formed to jump past the declaration of
2141 DECL. Returns 2 if it's also a real problem. */
2144 decl_jump_unsafe (tree decl)
2146 if (TREE_CODE (decl) != VAR_DECL || TREE_STATIC (decl))
2149 if (DECL_INITIAL (decl) == NULL_TREE
2150 && pod_type_p (TREE_TYPE (decl)))
2153 /* This is really only important if we're crossing an initialization.
2154 The POD stuff is just pedantry; why should it matter if the class
2155 contains a field of pointer to member type? */
2156 if (DECL_INITIAL (decl)
2157 || (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))))
2162 /* Check that a single previously seen jump to a newly defined label
2163 is OK. DECL is the LABEL_DECL or 0; LEVEL is the binding_level for
2164 the jump context; NAMES are the names in scope in LEVEL at the jump
2165 context; FILE and LINE are the source position of the jump or 0. */
2168 check_previous_goto_1 (tree decl,
2169 struct cp_binding_level* level,
2170 tree names, const location_t *locus)
2174 struct cp_binding_level *b = current_binding_level;
2175 for (; b; b = b->level_chain)
2177 tree new_decls = b->names;
2178 tree old_decls = (b == level ? names : NULL_TREE);
2179 for (; new_decls != old_decls;
2180 new_decls = TREE_CHAIN (new_decls))
2182 int problem = decl_jump_unsafe (new_decls);
2189 pedwarn ("jump to label `%D'", decl);
2191 pedwarn ("jump to case label");
2194 pedwarn ("%H from here", locus);
2199 cp_error_at (" crosses initialization of `%#D'",
2202 cp_pedwarn_at (" enters scope of non-POD `%#D'",
2208 if ((b->kind == sk_try || b->kind == sk_catch) && ! saw_eh)
2213 pedwarn ("jump to label `%D'", decl);
2215 pedwarn ("jump to case label");
2218 pedwarn ("%H from here", locus);
2221 if (b->kind == sk_try)
2222 error (" enters try block");
2224 error (" enters catch block");
2231 check_previous_goto (struct named_label_use_list* use)
2233 check_previous_goto_1 (use->label_decl, use->binding_level,
2234 use->names_in_scope, &use->o_goto_locus);
2238 check_switch_goto (struct cp_binding_level* level)
2240 check_previous_goto_1 (NULL_TREE, level, level->names, NULL);
2243 /* Check that any previously seen jumps to a newly defined label DECL
2244 are OK. Called by define_label. */
2247 check_previous_gotos (tree decl)
2249 struct named_label_use_list **usep;
2251 if (! TREE_USED (decl))
2254 for (usep = &named_label_uses; *usep; )
2256 struct named_label_use_list *use = *usep;
2257 if (use->label_decl == decl)
2259 check_previous_goto (use);
2263 usep = &(use->next);
2267 /* Check that a new jump to a label DECL is OK. Called by
2268 finish_goto_stmt. */
2271 check_goto (tree decl)
2275 struct named_label_list *lab;
2277 /* We can't know where a computed goto is jumping. So we assume
2279 if (! DECL_P (decl))
2282 /* If the label hasn't been defined yet, defer checking. */
2283 if (! DECL_INITIAL (decl))
2289 for (lab = named_labels; lab; lab = lab->next)
2290 if (decl == lab->label_decl)
2293 /* If the label is not on named_labels it's a gcc local label, so
2294 it must be in an outer scope, so jumping to it is always OK. */
2298 if ((lab->in_try_scope || lab->in_catch_scope || lab->bad_decls)
2301 cp_pedwarn_at ("jump to label `%D'", decl);
2302 pedwarn (" from here");
2306 for (bad = lab->bad_decls; bad; bad = TREE_CHAIN (bad))
2308 tree b = TREE_VALUE (bad);
2309 int u = decl_jump_unsafe (b);
2311 if (u > 1 && DECL_ARTIFICIAL (b))
2312 /* Can't skip init of __exception_info. */
2313 error ("%J enters catch block", b);
2315 cp_error_at (" skips initialization of `%#D'", b);
2317 cp_pedwarn_at (" enters scope of non-POD `%#D'", b);
2320 if (lab->in_try_scope)
2321 error (" enters try block");
2322 else if (lab->in_catch_scope)
2323 error (" enters catch block");
2326 /* Define a label, specifying the location in the source file.
2327 Return the LABEL_DECL node for the label. */
2330 define_label (location_t location, tree name)
2332 tree decl = lookup_label (name);
2333 struct named_label_list *ent;
2334 struct cp_binding_level *p;
2336 timevar_push (TV_NAME_LOOKUP);
2337 for (ent = named_labels; ent; ent = ent->next)
2338 if (ent->label_decl == decl)
2341 /* After labels, make any new cleanups in the function go into their
2342 own new (temporary) binding contour. */
2343 for (p = current_binding_level;
2344 p->kind != sk_function_parms;
2346 p->more_cleanups_ok = 0;
2348 if (name == get_identifier ("wchar_t"))
2349 pedwarn ("label named wchar_t");
2351 if (DECL_INITIAL (decl) != NULL_TREE)
2352 error ("duplicate label `%D'", decl);
2355 /* Mark label as having been defined. */
2356 DECL_INITIAL (decl) = error_mark_node;
2357 /* Say where in the source. */
2358 DECL_SOURCE_LOCATION (decl) = location;
2361 ent->names_in_scope = current_binding_level->names;
2362 ent->binding_level = current_binding_level;
2364 check_previous_gotos (decl);
2367 timevar_pop (TV_NAME_LOOKUP);
2373 struct cp_binding_level *level;
2374 struct cp_switch *next;
2375 /* The SWITCH_STMT being built. */
2377 /* A splay-tree mapping the low element of a case range to the high
2378 element, or NULL_TREE if there is no high element. Used to
2379 determine whether or not a new case label duplicates an old case
2380 label. We need a tree, rather than simply a hash table, because
2381 of the GNU case range extension. */
2385 /* A stack of the currently active switch statements. The innermost
2386 switch statement is on the top of the stack. There is no need to
2387 mark the stack for garbage collection because it is only active
2388 during the processing of the body of a function, and we never
2389 collect at that point. */
2391 static struct cp_switch *switch_stack;
2393 /* Called right after a switch-statement condition is parsed.
2394 SWITCH_STMT is the switch statement being parsed. */
2397 push_switch (tree switch_stmt)
2399 struct cp_switch *p = xmalloc (sizeof (struct cp_switch));
2400 p->level = current_binding_level;
2401 p->next = switch_stack;
2402 p->switch_stmt = switch_stmt;
2403 p->cases = splay_tree_new (case_compare, NULL, NULL);
2410 struct cp_switch *cs = switch_stack;
2412 /* Emit warnings as needed. */
2413 c_do_switch_warnings (cs->cases, cs->switch_stmt);
2415 splay_tree_delete (cs->cases);
2416 switch_stack = switch_stack->next;
2420 /* Note that we've seen a definition of a case label, and complain if this
2421 is a bad place for one. */
2424 finish_case_label (tree low_value, tree high_value)
2427 struct cp_binding_level *p;
2429 if (processing_template_decl)
2433 /* For templates, just add the case label; we'll do semantic
2434 analysis at instantiation-time. */
2435 label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
2436 return add_stmt (build_case_label (low_value, high_value, label));
2439 /* Find the condition on which this switch statement depends. */
2440 cond = SWITCH_COND (switch_stack->switch_stmt);
2441 if (cond && TREE_CODE (cond) == TREE_LIST)
2442 cond = TREE_VALUE (cond);
2444 r = c_add_case_label (switch_stack->cases, cond, low_value, high_value);
2446 check_switch_goto (switch_stack->level);
2448 /* After labels, make any new cleanups in the function go into their
2449 own new (temporary) binding contour. */
2450 for (p = current_binding_level;
2451 p->kind != sk_function_parms;
2453 p->more_cleanups_ok = 0;
2458 /* Hash a TYPENAME_TYPE. K is really of type `tree'. */
2461 typename_hash (const void* k)
2466 hash = (htab_hash_pointer (TYPE_CONTEXT (t))
2467 ^ htab_hash_pointer (DECL_NAME (TYPE_NAME (t))));
2472 /* Compare two TYPENAME_TYPEs. K1 and K2 are really of type `tree'. */
2475 typename_compare (const void * k1, const void * k2)
2484 d1 = TYPE_NAME (t1);
2485 d2 = TYPE_NAME (t2);
2487 return (DECL_NAME (d1) == DECL_NAME (d2)
2488 && TYPE_CONTEXT (t1) == TYPE_CONTEXT (t2)
2489 && ((TREE_TYPE (t1) != NULL_TREE)
2490 == (TREE_TYPE (t2) != NULL_TREE))
2491 && same_type_p (TREE_TYPE (t1), TREE_TYPE (t2))
2492 && TYPENAME_TYPE_FULLNAME (t1) == TYPENAME_TYPE_FULLNAME (t2));
2495 /* Build a TYPENAME_TYPE. If the type is `typename T::t', CONTEXT is
2496 the type of `T', NAME is the IDENTIFIER_NODE for `t'. If BASE_TYPE
2497 is non-NULL, this type is being created by the implicit typename
2498 extension, and BASE_TYPE is a type named `t' in some base class of
2499 `T' which depends on template parameters.
2501 Returns the new TYPENAME_TYPE. */
2503 static GTY ((param_is (union tree_node))) htab_t typename_htab;
2506 build_typename_type (tree context, tree name, tree fullname)
2512 if (typename_htab == NULL)
2514 typename_htab = htab_create_ggc (61, &typename_hash,
2515 &typename_compare, NULL);
2518 /* Build the TYPENAME_TYPE. */
2519 t = make_aggr_type (TYPENAME_TYPE);
2520 TYPE_CONTEXT (t) = FROB_CONTEXT (context);
2521 TYPENAME_TYPE_FULLNAME (t) = fullname;
2523 /* Build the corresponding TYPE_DECL. */
2524 d = build_decl (TYPE_DECL, name, t);
2525 TYPE_NAME (TREE_TYPE (d)) = d;
2526 TYPE_STUB_DECL (TREE_TYPE (d)) = d;
2527 DECL_CONTEXT (d) = FROB_CONTEXT (context);
2528 DECL_ARTIFICIAL (d) = 1;
2530 /* See if we already have this type. */
2531 e = htab_find_slot (typename_htab, t, INSERT);
2540 /* Resolve `typename CONTEXT::NAME'. Returns an appropriate type,
2541 unless an error occurs, in which case error_mark_node is returned.
2542 If we locate a non-artificial TYPE_DECL and TF_KEEP_TYPE_DECL is
2543 set, we return that, rather than the _TYPE it corresponds to, in
2544 other cases we look through the type decl. If TF_ERROR is set,
2545 complain about errors, otherwise be quiet. */
2548 make_typename_type (tree context, tree name, tsubst_flags_t complain)
2552 if (name == error_mark_node
2553 || context == NULL_TREE
2554 || context == error_mark_node)
2555 return error_mark_node;
2559 if (!(TYPE_LANG_SPECIFIC (name)
2560 && (CLASSTYPE_IS_TEMPLATE (name)
2561 || CLASSTYPE_USE_TEMPLATE (name))))
2562 name = TYPE_IDENTIFIER (name);
2564 /* Create a TEMPLATE_ID_EXPR for the type. */
2565 name = build_nt (TEMPLATE_ID_EXPR,
2566 CLASSTYPE_TI_TEMPLATE (name),
2567 CLASSTYPE_TI_ARGS (name));
2569 else if (TREE_CODE (name) == TYPE_DECL)
2570 name = DECL_NAME (name);
2574 if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
2576 name = TREE_OPERAND (name, 0);
2577 if (TREE_CODE (name) == TEMPLATE_DECL)
2578 name = TREE_OPERAND (fullname, 0) = DECL_NAME (name);
2580 if (TREE_CODE (name) == TEMPLATE_DECL)
2582 error ("`%D' used without template parameters", name);
2583 return error_mark_node;
2585 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 20030802);
2587 if (TREE_CODE (context) == NAMESPACE_DECL)
2589 /* We can get here from typename_sub0 in the explicit_template_type
2590 expansion. Just fail. */
2591 if (complain & tf_error)
2592 error ("no class template named `%#T' in `%#T'",
2594 return error_mark_node;
2597 if (!dependent_type_p (context)
2598 || currently_open_class (context))
2600 if (TREE_CODE (fullname) == TEMPLATE_ID_EXPR)
2602 tree tmpl = NULL_TREE;
2603 if (IS_AGGR_TYPE (context))
2604 tmpl = lookup_field (context, name, 0, false);
2605 if (!tmpl || !DECL_CLASS_TEMPLATE_P (tmpl))
2607 if (complain & tf_error)
2608 error ("no class template named `%#T' in `%#T'",
2610 return error_mark_node;
2613 if (complain & tf_error)
2614 perform_or_defer_access_check (TYPE_BINFO (context), tmpl);
2616 return lookup_template_class (tmpl,
2617 TREE_OPERAND (fullname, 1),
2619 /*entering_scope=*/0,
2620 tf_error | tf_warning | tf_user);
2626 if (!IS_AGGR_TYPE (context))
2628 if (complain & tf_error)
2629 error ("no type named `%#T' in `%#T'", name, context);
2630 return error_mark_node;
2633 t = lookup_field (context, name, 0, true);
2636 if (TREE_CODE (t) != TYPE_DECL)
2638 if (complain & tf_error)
2639 error ("no type named `%#T' in `%#T'", name, context);
2640 return error_mark_node;
2643 if (complain & tf_error)
2644 perform_or_defer_access_check (TYPE_BINFO (context), t);
2646 if (DECL_ARTIFICIAL (t) || !(complain & tf_keep_type_decl))
2654 /* If the CONTEXT is not a template type, then either the field is
2655 there now or its never going to be. */
2656 if (!dependent_type_p (context))
2658 if (complain & tf_error)
2659 error ("no type named `%#T' in `%#T'", name, context);
2660 return error_mark_node;
2663 return build_typename_type (context, name, fullname);
2666 /* Resolve `CONTEXT::template NAME'. Returns an appropriate type,
2667 unless an error occurs, in which case error_mark_node is returned.
2668 If we locate a TYPE_DECL, we return that, rather than the _TYPE it
2669 corresponds to. If COMPLAIN zero, don't complain about any errors
2673 make_unbound_class_template (tree context, tree name, tsubst_flags_t complain)
2679 name = TYPE_IDENTIFIER (name);
2680 else if (DECL_P (name))
2681 name = DECL_NAME (name);
2682 if (TREE_CODE (name) != IDENTIFIER_NODE)
2685 if (!dependent_type_p (context)
2686 || currently_open_class (context))
2688 tree tmpl = NULL_TREE;
2690 if (IS_AGGR_TYPE (context))
2691 tmpl = lookup_field (context, name, 0, false);
2693 if (!tmpl || !DECL_CLASS_TEMPLATE_P (tmpl))
2695 if (complain & tf_error)
2696 error ("no class template named `%#T' in `%#T'", name, context);
2697 return error_mark_node;
2700 if (complain & tf_error)
2701 perform_or_defer_access_check (TYPE_BINFO (context), tmpl);
2706 /* Build the UNBOUND_CLASS_TEMPLATE. */
2707 t = make_aggr_type (UNBOUND_CLASS_TEMPLATE);
2708 TYPE_CONTEXT (t) = FROB_CONTEXT (context);
2709 TREE_TYPE (t) = NULL_TREE;
2711 /* Build the corresponding TEMPLATE_DECL. */
2712 d = build_decl (TEMPLATE_DECL, name, t);
2713 TYPE_NAME (TREE_TYPE (d)) = d;
2714 TYPE_STUB_DECL (TREE_TYPE (d)) = d;
2715 DECL_CONTEXT (d) = FROB_CONTEXT (context);
2716 DECL_ARTIFICIAL (d) = 1;
2723 /* Push the declarations of builtin types into the namespace.
2724 RID_INDEX is the index of the builtin type in the array
2725 RID_POINTERS. NAME is the name used when looking up the builtin
2726 type. TYPE is the _TYPE node for the builtin type. */
2729 record_builtin_type (enum rid rid_index,
2733 tree rname = NULL_TREE, tname = NULL_TREE;
2734 tree tdecl = NULL_TREE;
2736 if ((int) rid_index < (int) RID_MAX)
2737 rname = ridpointers[(int) rid_index];
2739 tname = get_identifier (name);
2741 /* The calls to SET_IDENTIFIER_GLOBAL_VALUE below should be
2742 eliminated. Built-in types should not be looked up name; their
2743 names are keywords that the parser can recognize. However, there
2744 is code in c-common.c that uses identifier_global_value to look
2745 up built-in types by name. */
2748 tdecl = build_decl (TYPE_DECL, tname, type);
2749 DECL_ARTIFICIAL (tdecl) = 1;
2750 SET_IDENTIFIER_GLOBAL_VALUE (tname, tdecl);
2756 tdecl = build_decl (TYPE_DECL, rname, type);
2757 DECL_ARTIFICIAL (tdecl) = 1;
2759 SET_IDENTIFIER_GLOBAL_VALUE (rname, tdecl);
2762 if (!TYPE_NAME (type))
2763 TYPE_NAME (type) = tdecl;
2766 debug_hooks->type_decl (tdecl, 0);
2769 /* Record one of the standard Java types.
2770 * Declare it as having the given NAME.
2771 * If SIZE > 0, it is the size of one of the integral types;
2772 * otherwise it is the negative of the size of one of the other types. */
2775 record_builtin_java_type (const char* name, int size)
2779 type = make_signed_type (size);
2780 else if (size > -32)
2781 { /* "__java_char" or ""__java_boolean". */
2782 type = make_unsigned_type (-size);
2783 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
2786 { /* "__java_float" or ""__java_double". */
2787 type = make_node (REAL_TYPE);
2788 TYPE_PRECISION (type) = - size;
2791 record_builtin_type (RID_MAX, name, type);
2792 decl = TYPE_NAME (type);
2794 /* Suppress generate debug symbol entries for these types,
2795 since for normal C++ they are just clutter.
2796 However, push_lang_context undoes this if extern "Java" is seen. */
2797 DECL_IGNORED_P (decl) = 1;
2799 TYPE_FOR_JAVA (type) = 1;
2803 /* Push a type into the namespace so that the back-ends ignore it. */
2806 record_unknown_type (tree type, const char* name)
2808 tree decl = pushdecl (build_decl (TYPE_DECL, get_identifier (name), type));
2809 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
2810 DECL_IGNORED_P (decl) = 1;
2811 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
2812 TYPE_SIZE (type) = TYPE_SIZE (void_type_node);
2813 TYPE_ALIGN (type) = 1;
2814 TYPE_USER_ALIGN (type) = 0;
2815 TYPE_MODE (type) = TYPE_MODE (void_type_node);
2818 /* An string for which we should create an IDENTIFIER_NODE at
2821 typedef struct predefined_identifier
2823 /* The name of the identifier. */
2824 const char *const name;
2825 /* The place where the IDENTIFIER_NODE should be stored. */
2827 /* Nonzero if this is the name of a constructor or destructor. */
2828 const int ctor_or_dtor_p;
2829 } predefined_identifier;
2831 /* Create all the predefined identifiers. */
2834 initialize_predefined_identifiers (void)
2836 const predefined_identifier *pid;
2838 /* A table of identifiers to create at startup. */
2839 static const predefined_identifier predefined_identifiers[] = {
2840 { "C++", &lang_name_cplusplus, 0 },
2841 { "C", &lang_name_c, 0 },
2842 { "Java", &lang_name_java, 0 },
2843 { CTOR_NAME, &ctor_identifier, 1 },
2844 { "__base_ctor", &base_ctor_identifier, 1 },
2845 { "__comp_ctor", &complete_ctor_identifier, 1 },
2846 { DTOR_NAME, &dtor_identifier, 1 },
2847 { "__comp_dtor", &complete_dtor_identifier, 1 },
2848 { "__base_dtor", &base_dtor_identifier, 1 },
2849 { "__deleting_dtor", &deleting_dtor_identifier, 1 },
2850 { IN_CHARGE_NAME, &in_charge_identifier, 0 },
2851 { "nelts", &nelts_identifier, 0 },
2852 { THIS_NAME, &this_identifier, 0 },
2853 { VTABLE_DELTA_NAME, &delta_identifier, 0 },
2854 { VTABLE_PFN_NAME, &pfn_identifier, 0 },
2855 { "_vptr", &vptr_identifier, 0 },
2856 { "__vtt_parm", &vtt_parm_identifier, 0 },
2857 { "::", &global_scope_name, 0 },
2858 { "std", &std_identifier, 0 },
2862 for (pid = predefined_identifiers; pid->name; ++pid)
2864 *pid->node = get_identifier (pid->name);
2865 if (pid->ctor_or_dtor_p)
2866 IDENTIFIER_CTOR_OR_DTOR_P (*pid->node) = 1;
2870 /* Create the predefined scalar types of C,
2871 and some nodes representing standard constants (0, 1, (void *)0).
2872 Initialize the global binding level.
2873 Make definitions for built-in primitive functions. */
2876 cxx_init_decl_processing (void)
2879 tree void_ftype_ptr;
2881 build_common_tree_nodes (flag_signed_char);
2883 /* Create all the identifiers we need. */
2884 initialize_predefined_identifiers ();
2886 /* Create the global variables. */
2887 push_to_top_level ();
2889 current_function_decl = NULL_TREE;
2890 current_binding_level = NULL;
2891 /* Enter the global namespace. */
2892 my_friendly_assert (global_namespace == NULL_TREE, 375);
2893 global_namespace = build_lang_decl (NAMESPACE_DECL, global_scope_name,
2895 begin_scope (sk_namespace, global_namespace);
2897 current_lang_name = NULL_TREE;
2899 /* Adjust various flags based on command-line settings. */
2900 if (!flag_permissive)
2901 flag_pedantic_errors = 1;
2902 if (!flag_no_inline)
2904 flag_inline_trees = 1;
2907 if (flag_inline_functions)
2909 flag_inline_trees = 2;
2910 flag_inline_functions = 0;
2913 /* Force minimum function alignment if using the least significant
2914 bit of function pointers to store the virtual bit. */
2915 if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn
2916 && force_align_functions_log < 1)
2917 force_align_functions_log = 1;
2920 current_lang_name = lang_name_c;
2922 error_mark_list = build_tree_list (error_mark_node, error_mark_node);
2923 TREE_TYPE (error_mark_list) = error_mark_node;
2925 /* Create the `std' namespace. */
2926 push_namespace (std_identifier);
2927 std_node = current_namespace;
2930 c_common_nodes_and_builtins ();
2932 java_byte_type_node = record_builtin_java_type ("__java_byte", 8);
2933 java_short_type_node = record_builtin_java_type ("__java_short", 16);
2934 java_int_type_node = record_builtin_java_type ("__java_int", 32);
2935 java_long_type_node = record_builtin_java_type ("__java_long", 64);
2936 java_float_type_node = record_builtin_java_type ("__java_float", -32);
2937 java_double_type_node = record_builtin_java_type ("__java_double", -64);
2938 java_char_type_node = record_builtin_java_type ("__java_char", -16);
2939 java_boolean_type_node = record_builtin_java_type ("__java_boolean", -1);
2941 integer_two_node = build_int_2 (2, 0);
2942 TREE_TYPE (integer_two_node) = integer_type_node;
2943 integer_three_node = build_int_2 (3, 0);
2944 TREE_TYPE (integer_three_node) = integer_type_node;
2946 record_builtin_type (RID_BOOL, "bool", boolean_type_node);
2947 truthvalue_type_node = boolean_type_node;
2948 truthvalue_false_node = boolean_false_node;
2949 truthvalue_true_node = boolean_true_node;
2951 empty_except_spec = build_tree_list (NULL_TREE, NULL_TREE);
2954 record_builtin_type (RID_MAX, NULL, string_type_node);
2957 delta_type_node = ptrdiff_type_node;
2958 vtable_index_type = ptrdiff_type_node;
2960 vtt_parm_type = build_pointer_type (const_ptr_type_node);
2961 void_ftype = build_function_type (void_type_node, void_list_node);
2962 void_ftype_ptr = build_function_type (void_type_node,
2963 tree_cons (NULL_TREE,
2967 = build_exception_variant (void_ftype_ptr, empty_except_spec);
2969 /* C++ extensions */
2971 unknown_type_node = make_node (UNKNOWN_TYPE);
2972 record_unknown_type (unknown_type_node, "unknown type");
2974 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
2975 TREE_TYPE (unknown_type_node) = unknown_type_node;
2977 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
2979 TYPE_POINTER_TO (unknown_type_node) = unknown_type_node;
2980 TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node;
2983 /* Make sure we get a unique function type, so we can give
2984 its pointer type a name. (This wins for gdb.) */
2985 tree vfunc_type = make_node (FUNCTION_TYPE);
2986 TREE_TYPE (vfunc_type) = integer_type_node;
2987 TYPE_ARG_TYPES (vfunc_type) = NULL_TREE;
2988 layout_type (vfunc_type);
2990 vtable_entry_type = build_pointer_type (vfunc_type);
2992 record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type);
2995 = build_cplus_array_type (vtable_entry_type, NULL_TREE);
2996 layout_type (vtbl_type_node);
2997 vtbl_type_node = build_qualified_type (vtbl_type_node, TYPE_QUAL_CONST);
2998 record_builtin_type (RID_MAX, NULL, vtbl_type_node);
2999 vtbl_ptr_type_node = build_pointer_type (vtable_entry_type);
3000 layout_type (vtbl_ptr_type_node);
3001 record_builtin_type (RID_MAX, NULL, vtbl_ptr_type_node);
3003 push_namespace (get_identifier ("__cxxabiv1"));
3004 abi_node = current_namespace;
3007 global_type_node = make_node (LANG_TYPE);
3008 record_unknown_type (global_type_node, "global type");
3011 current_lang_name = lang_name_cplusplus;
3015 tree bad_alloc_type_node;
3016 tree bad_alloc_decl;
3017 tree newtype, deltype;
3018 tree ptr_ftype_sizetype;
3020 push_namespace (std_identifier);
3021 bad_alloc_id = get_identifier ("bad_alloc");
3022 bad_alloc_type_node = make_aggr_type (RECORD_TYPE);
3023 TYPE_CONTEXT (bad_alloc_type_node) = current_namespace;
3025 = create_implicit_typedef (bad_alloc_id, bad_alloc_type_node);
3026 DECL_CONTEXT (bad_alloc_decl) = current_namespace;
3027 TYPE_STUB_DECL (bad_alloc_type_node) = bad_alloc_decl;
3031 = build_function_type (ptr_type_node,
3032 tree_cons (NULL_TREE,
3035 newtype = build_exception_variant
3036 (ptr_ftype_sizetype, add_exception_specifier
3037 (NULL_TREE, bad_alloc_type_node, -1));
3038 deltype = build_exception_variant (void_ftype_ptr, empty_except_spec);
3039 push_cp_library_fn (NEW_EXPR, newtype);
3040 push_cp_library_fn (VEC_NEW_EXPR, newtype);
3041 global_delete_fndecl = push_cp_library_fn (DELETE_EXPR, deltype);
3042 push_cp_library_fn (VEC_DELETE_EXPR, deltype);
3046 = build_library_fn_ptr ("__cxa_pure_virtual", void_ftype);
3048 /* Perform other language dependent initializations. */
3049 init_class_processing ();
3050 init_search_processing ();
3051 init_rtti_processing ();
3053 if (flag_exceptions)
3054 init_exception_processing ();
3056 if (! supports_one_only ())
3059 make_fname_decl = cp_make_fname_decl;
3060 start_fname_decls ();
3062 /* Show we use EH for cleanups. */
3063 if (flag_exceptions)
3064 using_eh_for_cleanups ();
3067 /* Generate an initializer for a function naming variable from
3068 NAME. NAME may be NULL, to indicate a dependent name. TYPE_P is
3069 filled in with the type of the init. */
3072 cp_fname_init (const char* name, tree *type_p)
3074 tree domain = NULL_TREE;
3076 tree init = NULL_TREE;
3081 length = strlen (name);
3082 domain = build_index_type (size_int (length));
3083 init = build_string (length + 1, name);
3086 type = build_qualified_type (char_type_node, TYPE_QUAL_CONST);
3087 type = build_cplus_array_type (type, domain);
3092 TREE_TYPE (init) = type;
3094 init = error_mark_node;
3099 /* Create the VAR_DECL for __FUNCTION__ etc. ID is the name to give the
3100 decl, NAME is the initialization string and TYPE_DEP indicates whether
3101 NAME depended on the type of the function. We make use of that to detect
3102 __PRETTY_FUNCTION__ inside a template fn. This is being done
3103 lazily at the point of first use, so we mustn't push the decl now. */
3106 cp_make_fname_decl (tree id, int type_dep)
3108 const char *const name = (type_dep && processing_template_decl
3109 ? NULL : fname_as_string (type_dep));
3111 tree init = cp_fname_init (name, &type);
3112 tree decl = build_decl (VAR_DECL, id, type);
3115 free ((char *) name);
3117 /* As we're using pushdecl_with_scope, we must set the context. */
3118 DECL_CONTEXT (decl) = current_function_decl;
3119 DECL_PRETTY_FUNCTION_P (decl) = type_dep;
3121 TREE_STATIC (decl) = 1;
3122 TREE_READONLY (decl) = 1;
3123 DECL_ARTIFICIAL (decl) = 1;
3124 DECL_INITIAL (decl) = init;
3126 TREE_USED (decl) = 1;
3128 if (current_function_decl)
3130 struct cp_binding_level *b = current_binding_level;
3131 while (b->level_chain->kind != sk_function_parms)
3133 pushdecl_with_scope (decl, b);
3134 cp_finish_decl (decl, init, NULL_TREE, LOOKUP_ONLYCONVERTING);
3137 pushdecl_top_level_and_finish (decl, init);
3142 /* Make a definition for a builtin function named NAME in the current
3143 namespace, whose data type is TYPE and whose context is CONTEXT.
3144 TYPE should be a function type with argument types.
3146 CLASS and CODE tell later passes how to compile calls to this function.
3147 See tree.h for possible values.
3149 If LIBNAME is nonzero, use that for DECL_ASSEMBLER_NAME,
3150 the name to be called if we can't opencode the function.
3151 If ATTRS is nonzero, use that for the function's attribute
3155 builtin_function_1 (const char* name,
3159 enum built_in_class class,
3160 const char* libname,
3163 tree decl = build_library_fn_1 (get_identifier (name), ERROR_MARK, type);
3164 DECL_BUILT_IN_CLASS (decl) = class;
3165 DECL_FUNCTION_CODE (decl) = code;
3166 DECL_CONTEXT (decl) = context;
3170 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
3171 we cannot change DECL_ASSEMBLER_NAME until we have installed this
3172 function in the namespace. */
3174 SET_DECL_ASSEMBLER_NAME (decl, get_identifier (libname));
3176 /* Warn if a function in the namespace for users
3177 is used without an occasion to consider it declared. */
3178 if (name[0] != '_' || name[1] != '_')
3179 DECL_ANTICIPATED (decl) = 1;
3181 /* Possibly apply some default attributes to this built-in function. */
3183 decl_attributes (&decl, attrs, ATTR_FLAG_BUILT_IN);
3185 decl_attributes (&decl, NULL_TREE, 0);
3190 /* Entry point for the benefit of c_common_nodes_and_builtins.
3192 Make a definition for a builtin function named NAME and whose data type
3193 is TYPE. TYPE should be a function type with argument types. This
3194 function places the anticipated declaration in the global namespace
3195 and additionally in the std namespace if appropriate.
3197 CLASS and CODE tell later passes how to compile calls to this function.
3198 See tree.h for possible values.
3200 If LIBNAME is nonzero, use that for DECL_ASSEMBLER_NAME,
3201 the name to be called if we can't opencode the function.
3203 If ATTRS is nonzero, use that for the function's attribute
3207 builtin_function (const char* name,
3210 enum built_in_class class,
3211 const char* libname,
3214 /* All builtins that don't begin with an '_' should additionally
3215 go in the 'std' namespace. */
3218 push_namespace (std_identifier);
3219 builtin_function_1 (name, type, std_node, code, class, libname, attrs);
3223 return builtin_function_1 (name, type, NULL_TREE, code,
3224 class, libname, attrs);
3227 /* Generate a FUNCTION_DECL with the typical flags for a runtime library
3228 function. Not called directly. */
3231 build_library_fn_1 (tree name, enum tree_code operator_code, tree type)
3233 tree fn = build_lang_decl (FUNCTION_DECL, name, type);
3234 DECL_EXTERNAL (fn) = 1;
3235 TREE_PUBLIC (fn) = 1;
3236 DECL_ARTIFICIAL (fn) = 1;
3237 TREE_NOTHROW (fn) = 1;
3238 SET_OVERLOADED_OPERATOR_CODE (fn, operator_code);
3239 SET_DECL_LANGUAGE (fn, lang_c);
3243 /* Returns the _DECL for a library function with C linkage.
3244 We assume that such functions never throw; if this is incorrect,
3245 callers should unset TREE_NOTHROW. */
3248 build_library_fn (tree name, tree type)
3250 return build_library_fn_1 (name, ERROR_MARK, type);
3253 /* Returns the _DECL for a library function with C++ linkage. */
3256 build_cp_library_fn (tree name, enum tree_code operator_code, tree type)
3258 tree fn = build_library_fn_1 (name, operator_code, type);
3259 TREE_NOTHROW (fn) = TYPE_NOTHROW_P (type);
3260 DECL_CONTEXT (fn) = FROB_CONTEXT (current_namespace);
3261 SET_DECL_LANGUAGE (fn, lang_cplusplus);
3265 /* Like build_library_fn, but takes a C string instead of an
3269 build_library_fn_ptr (const char* name, tree type)
3271 return build_library_fn (get_identifier (name), type);
3274 /* Like build_cp_library_fn, but takes a C string instead of an
3278 build_cp_library_fn_ptr (const char* name, tree type)
3280 return build_cp_library_fn (get_identifier (name), ERROR_MARK, type);
3283 /* Like build_library_fn, but also pushes the function so that we will
3284 be able to find it via IDENTIFIER_GLOBAL_VALUE. */
3287 push_library_fn (tree name, tree type)
3289 tree fn = build_library_fn (name, type);
3290 pushdecl_top_level (fn);
3294 /* Like build_cp_library_fn, but also pushes the function so that it
3295 will be found by normal lookup. */
3298 push_cp_library_fn (enum tree_code operator_code, tree type)
3300 tree fn = build_cp_library_fn (ansi_opname (operator_code),
3307 /* Like push_library_fn, but takes a TREE_LIST of parm types rather than
3311 push_void_library_fn (tree name, tree parmtypes)
3313 tree type = build_function_type (void_type_node, parmtypes);
3314 return push_library_fn (name, type);
3317 /* Like push_library_fn, but also note that this function throws
3318 and does not return. Used for __throw_foo and the like. */
3321 push_throw_library_fn (tree name, tree type)
3323 tree fn = push_library_fn (name, type);
3324 TREE_THIS_VOLATILE (fn) = 1;
3325 TREE_NOTHROW (fn) = 0;
3329 /* When we call finish_struct for an anonymous union, we create
3330 default copy constructors and such. But, an anonymous union
3331 shouldn't have such things; this function undoes the damage to the
3332 anonymous union type T.
3334 (The reason that we create the synthesized methods is that we don't
3335 distinguish `union { int i; }' from `typedef union { int i; } U'.
3336 The first is an anonymous union; the second is just an ordinary
3340 fixup_anonymous_aggr (tree t)
3344 /* Wipe out memory of synthesized methods. */
3345 TYPE_HAS_CONSTRUCTOR (t) = 0;
3346 TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0;
3347 TYPE_HAS_INIT_REF (t) = 0;
3348 TYPE_HAS_CONST_INIT_REF (t) = 0;
3349 TYPE_HAS_ASSIGN_REF (t) = 0;
3350 TYPE_HAS_CONST_ASSIGN_REF (t) = 0;
3352 /* Splice the implicitly generated functions out of the TYPE_METHODS
3354 q = &TYPE_METHODS (t);
3357 if (DECL_ARTIFICIAL (*q))
3358 *q = TREE_CHAIN (*q);
3360 q = &TREE_CHAIN (*q);
3363 /* ISO C++ 9.5.3. Anonymous unions may not have function members. */
3364 if (TYPE_METHODS (t))
3365 error ("%Jan anonymous union cannot have function members",
3366 TYPE_MAIN_DECL (t));
3368 /* Anonymous aggregates cannot have fields with ctors, dtors or complex
3369 assignment operators (because they cannot have these methods themselves).
3370 For anonymous unions this is already checked because they are not allowed
3371 in any union, otherwise we have to check it. */
3372 if (TREE_CODE (t) != UNION_TYPE)
3376 for (field = TYPE_FIELDS (t); field; field = TREE_CHAIN (field))
3377 if (TREE_CODE (field) == FIELD_DECL)
3379 type = TREE_TYPE (field);
3380 if (CLASS_TYPE_P (type))
3382 if (TYPE_NEEDS_CONSTRUCTING (type))
3383 cp_error_at ("member %#D' with constructor not allowed in anonymous aggregate",
3385 if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type))
3386 cp_error_at ("member %#D' with destructor not allowed in anonymous aggregate",
3388 if (TYPE_HAS_COMPLEX_ASSIGN_REF (type))
3389 cp_error_at ("member %#D' with copy assignment operator not allowed in anonymous aggregate",
3396 /* Make sure that a declaration with no declarator is well-formed, i.e.
3397 just declares a tagged type or anonymous union.
3399 Returns the type declared; or NULL_TREE if none. */
3402 check_tag_decl (cp_decl_specifier_seq *declspecs)
3404 int saw_friend = declspecs->specs[(int)ds_friend] != 0;
3405 int saw_typedef = declspecs->specs[(int)ds_typedef] != 0;
3406 /* If a class, struct, or enum type is declared by the DECLSPECS
3407 (i.e, if a class-specifier, enum-specifier, or non-typename
3408 elaborated-type-specifier appears in the DECLSPECS),
3409 DECLARED_TYPE is set to the corresponding type. */
3410 tree declared_type = NULL_TREE;
3411 bool error_p = false;
3413 if (declspecs->multiple_types_p)
3414 error ("multiple types in one declaration");
3415 else if (declspecs->redefined_builtin_type)
3417 if (!in_system_header)
3418 pedwarn ("redeclaration of C++ built-in type %qT",
3419 declspecs->redefined_builtin_type);
3423 if (TYPE_P (declspecs->type)
3424 && ((TREE_CODE (declspecs->type) != TYPENAME_TYPE
3425 && IS_AGGR_TYPE (declspecs->type))
3426 || TREE_CODE (declspecs->type) == ENUMERAL_TYPE))
3427 declared_type = declspecs->type;
3428 else if (declspecs->type == error_mark_node)
3430 if (declared_type == NULL_TREE && ! saw_friend && !error_p)
3431 pedwarn ("declaration does not declare anything");
3432 /* Check for an anonymous union. */
3433 else if (declared_type && IS_AGGR_TYPE_CODE (TREE_CODE (declared_type))
3434 && TYPE_ANONYMOUS_P (declared_type))
3436 /* 7/3 In a simple-declaration, the optional init-declarator-list
3437 can be omitted only when declaring a class (clause 9) or
3438 enumeration (7.2), that is, when the decl-specifier-seq contains
3439 either a class-specifier, an elaborated-type-specifier with
3440 a class-key (9.1), or an enum-specifier. In these cases and
3441 whenever a class-specifier or enum-specifier is present in the
3442 decl-specifier-seq, the identifiers in these specifiers are among
3443 the names being declared by the declaration (as class-name,
3444 enum-names, or enumerators, depending on the syntax). In such
3445 cases, and except for the declaration of an unnamed bit-field (9.6),
3446 the decl-specifier-seq shall introduce one or more names into the
3447 program, or shall redeclare a name introduced by a previous
3448 declaration. [Example:
3449 enum { }; // ill-formed
3450 typedef class { }; // ill-formed
3454 error ("missing type-name in typedef-declaration");
3457 /* Anonymous unions are objects, so they can have specifiers. */;
3458 SET_ANON_AGGR_TYPE_P (declared_type);
3460 if (TREE_CODE (declared_type) != UNION_TYPE && pedantic
3461 && !in_system_header)
3462 pedwarn ("ISO C++ prohibits anonymous structs");
3467 if (declspecs->specs[(int)ds_inline]
3468 || declspecs->specs[(int)ds_virtual])
3469 error ("`%s' can only be specified for functions",
3470 declspecs->specs[(int)ds_inline]
3471 ? "inline" : "virtual");
3473 && (!current_class_type
3474 || current_scope () != current_class_type))
3475 error ("`friend' can only be specified inside a class");
3476 else if (declspecs->specs[(int)ds_explicit])
3477 error ("`explicit' can only be specified for constructors");
3478 else if (declspecs->storage_class)
3479 error ("a storage class can only be specified for objects "
3481 else if (declspecs->specs[(int)ds_const]
3482 || declspecs->specs[(int)ds_volatile]
3483 || declspecs->specs[(int)ds_restrict]
3484 || declspecs->specs[(int)ds_thread])
3485 error ("qualifiers can only be specified for objects "
3489 return declared_type;
3492 /* Called when a declaration is seen that contains no names to declare.
3493 If its type is a reference to a structure, union or enum inherited
3494 from a containing scope, shadow that tag name for the current scope
3495 with a forward reference.
3496 If its type defines a new named structure or union
3497 or defines an enum, it is valid but we need not do anything here.
3498 Otherwise, it is an error.
3500 C++: may have to grok the declspecs to learn about static,
3501 complain for anonymous unions.
3503 Returns the TYPE declared -- or NULL_TREE if none. */
3506 shadow_tag (cp_decl_specifier_seq *declspecs)
3508 tree t = check_tag_decl (declspecs);
3513 maybe_process_partial_specialization (t);
3515 /* This is where the variables in an anonymous union are
3516 declared. An anonymous union declaration looks like:
3518 because there is no declarator after the union, the parser
3519 sends that declaration here. */
3520 if (ANON_AGGR_TYPE_P (t))
3522 fixup_anonymous_aggr (t);
3524 if (TYPE_FIELDS (t))
3526 tree decl = grokdeclarator (/*declarator=*/NULL,
3527 declspecs, NORMAL, 0, NULL);
3528 finish_anon_union (decl);
3535 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
3538 groktypename (cp_decl_specifier_seq *type_specifiers,
3539 const cp_declarator *declarator)
3543 attrs = type_specifiers->attributes;
3544 type_specifiers->attributes = NULL_TREE;
3545 type = grokdeclarator (declarator, type_specifiers, TYPENAME, 0, &attrs);
3547 cplus_decl_attributes (&type, attrs, 0);
3551 /* Decode a declarator in an ordinary declaration or data definition.
3552 This is called as soon as the type information and variable name
3553 have been parsed, before parsing the initializer if any.
3554 Here we create the ..._DECL node, fill in its type,
3555 and put it on the list of decls for the current context.
3556 The ..._DECL node is returned as the value.
3558 Exception: for arrays where the length is not specified,
3559 the type is left null, to be filled in by `cp_finish_decl'.
3561 Function definitions do not come here; they go to start_function
3562 instead. However, external and forward declarations of functions
3563 do go through here. Structure field declarations are done by
3564 grokfield and not through here. */
3567 start_decl (const cp_declarator *declarator,
3568 cp_decl_specifier_seq *declspecs,
3571 tree prefix_attributes)
3577 /* This should only be done once on the top most decl. */
3578 if (have_extern_spec)
3580 declspecs->storage_class = sc_extern;
3581 have_extern_spec = false;
3584 /* An object declared as __attribute__((deprecated)) suppresses
3585 warnings of uses of other deprecated items. */
3586 if (lookup_attribute ("deprecated", attributes))
3587 deprecated_state = DEPRECATED_SUPPRESS;
3589 attributes = chainon (attributes, prefix_attributes);
3591 decl = grokdeclarator (declarator, declspecs, NORMAL, initialized,
3594 deprecated_state = DEPRECATED_NORMAL;
3596 if (decl == NULL_TREE || TREE_CODE (decl) == VOID_TYPE)
3599 type = TREE_TYPE (decl);
3601 if (type == error_mark_node)
3604 context = DECL_CONTEXT (decl);
3606 if (initialized && context && TREE_CODE (context) == NAMESPACE_DECL
3607 && context != current_namespace && TREE_CODE (decl) == VAR_DECL)
3609 /* When parsing the initializer, lookup should use the object's
3611 push_decl_namespace (context);
3614 /* We are only interested in class contexts, later. */
3615 if (context && TREE_CODE (context) == NAMESPACE_DECL)
3616 context = NULL_TREE;
3619 /* Is it valid for this decl to have an initializer at all?
3620 If not, set INITIALIZED to zero, which will indirectly
3621 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
3622 switch (TREE_CODE (decl))
3625 error ("typedef `%D' is initialized (use __typeof__ instead)", decl);
3630 error ("function `%#D' is initialized like a variable", decl);
3640 if (! toplevel_bindings_p ()
3641 && DECL_EXTERNAL (decl))
3642 warning ("declaration of `%#D' has `extern' and is initialized",
3644 DECL_EXTERNAL (decl) = 0;
3645 if (toplevel_bindings_p ())
3646 TREE_STATIC (decl) = 1;
3648 /* Tell `pushdecl' this is an initialized decl
3649 even though we don't yet have the initializer expression.
3650 Also tell `cp_finish_decl' it may store the real initializer. */
3651 DECL_INITIAL (decl) = error_mark_node;
3654 /* Set attributes here so if duplicate decl, will have proper attributes. */
3655 cplus_decl_attributes (&decl, attributes, 0);
3657 /* If #pragma weak was used, mark the decl weak now. */
3658 if (global_scope_p (current_binding_level))
3659 maybe_apply_pragma_weak (decl);
3661 if (TREE_CODE (decl) == FUNCTION_DECL
3662 && DECL_DECLARED_INLINE_P (decl)
3663 && DECL_UNINLINABLE (decl)
3664 && lookup_attribute ("noinline", DECL_ATTRIBUTES (decl)))
3665 warning ("%Jinline function '%D' given attribute noinline", decl, decl);
3667 if (context && COMPLETE_TYPE_P (complete_type (context)))
3669 push_nested_class (context);
3671 if (TREE_CODE (decl) == VAR_DECL)
3673 tree field = lookup_field (context, DECL_NAME (decl), 0, false);
3674 if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
3675 error ("`%#D' is not a static member of `%#T'", decl, context);
3678 if (DECL_CONTEXT (field) != context)
3680 if (!same_type_p (DECL_CONTEXT (field), context))
3681 pedwarn ("ISO C++ does not permit `%T::%D' to be defined as `%T::%D'",
3682 DECL_CONTEXT (field), DECL_NAME (decl),
3683 context, DECL_NAME (decl));
3684 DECL_CONTEXT (decl) = DECL_CONTEXT (field);
3686 /* Static data member are tricky; an in-class initialization
3687 still doesn't provide a definition, so the in-class
3688 declaration will have DECL_EXTERNAL set, but will have an
3689 initialization. Thus, duplicate_decls won't warn
3690 about this situation, and so we check here. */
3691 if (DECL_INITIAL (decl) && DECL_INITIAL (field))
3692 error ("duplicate initialization of %D", decl);
3693 if (duplicate_decls (decl, field))
3699 tree field = check_classfn (context, decl,
3700 (processing_template_decl
3701 > template_class_depth (context))
3702 ? current_template_parms
3704 if (field && duplicate_decls (decl, field))
3708 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
3709 DECL_IN_AGGR_P (decl) = 0;
3710 if ((DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl))
3711 || CLASSTYPE_TEMPLATE_INSTANTIATION (context))
3713 SET_DECL_TEMPLATE_SPECIALIZATION (decl);
3714 /* [temp.expl.spec] An explicit specialization of a static data
3715 member of a template is a definition if the declaration
3716 includes an initializer; otherwise, it is a declaration.
3718 We check for processing_specialization so this only applies
3719 to the new specialization syntax. */
3720 if (DECL_INITIAL (decl) == NULL_TREE && processing_specialization)
3721 DECL_EXTERNAL (decl) = 1;
3724 if (DECL_EXTERNAL (decl) && ! DECL_TEMPLATE_SPECIALIZATION (decl))
3725 pedwarn ("declaration of `%#D' outside of class is not definition",
3729 /* Enter this declaration into the symbol table. */
3730 tem = maybe_push_decl (decl);
3732 if (processing_template_decl)
3733 tem = push_template_decl (tem);
3734 if (tem == error_mark_node)
3735 return error_mark_node;
3737 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
3738 /* Tell the back-end to use or not use .common as appropriate. If we say
3739 -fconserve-space, we want this to save .data space, at the expense of
3740 wrong semantics. If we say -fno-conserve-space, we want this to
3741 produce errors about redefs; to do this we force variables into the
3743 DECL_COMMON (tem) = ((TREE_CODE (tem) != VAR_DECL
3744 || !DECL_THREAD_LOCAL (tem))
3745 && (flag_conserve_space || ! TREE_PUBLIC (tem)));
3748 if (! processing_template_decl)
3755 start_decl_1 (tree decl)
3757 tree type = TREE_TYPE (decl);
3758 int initialized = (DECL_INITIAL (decl) != NULL_TREE);
3760 if (type == error_mark_node)
3764 /* Is it valid for this decl to have an initializer at all?
3765 If not, set INITIALIZED to zero, which will indirectly
3766 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
3768 /* Don't allow initializations for incomplete types except for
3769 arrays which might be completed by the initialization. */
3770 if (COMPLETE_TYPE_P (complete_type (type)))
3771 ; /* A complete type is ok. */
3772 else if (TREE_CODE (type) != ARRAY_TYPE)
3774 error ("variable `%#D' has initializer but incomplete type",
3777 type = TREE_TYPE (decl) = error_mark_node;
3779 else if (!COMPLETE_TYPE_P (complete_type (TREE_TYPE (type))))
3781 if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
3782 error ("elements of array `%#D' have incomplete type", decl);
3783 /* else we already gave an error in start_decl. */
3789 && TREE_CODE (decl) != TYPE_DECL
3790 && TREE_CODE (decl) != TEMPLATE_DECL
3791 && type != error_mark_node
3792 && IS_AGGR_TYPE (type)
3793 && ! DECL_EXTERNAL (decl))
3795 if ((! processing_template_decl || ! uses_template_parms (type))
3796 && !COMPLETE_TYPE_P (complete_type (type)))
3798 error ("aggregate `%#D' has incomplete type and cannot be defined",
3800 /* Change the type so that assemble_variable will give
3801 DECL an rtl we can live with: (mem (const_int 0)). */
3802 type = TREE_TYPE (decl) = error_mark_node;
3806 /* If any base type in the hierarchy of TYPE needs a constructor,
3807 then we set initialized to 1. This way any nodes which are
3808 created for the purposes of initializing this aggregate
3809 will live as long as it does. This is necessary for global
3810 aggregates which do not have their initializers processed until
3811 the end of the file. */
3812 initialized = TYPE_NEEDS_CONSTRUCTING (type);
3817 DECL_INITIAL (decl) = NULL_TREE;
3819 /* Create a new scope to hold this declaration if necessary.
3820 Whether or not a new scope is necessary cannot be determined
3821 until after the type has been completed; if the type is a
3822 specialization of a class template it is not until after
3823 instantiation has occurred that TYPE_HAS_NONTRIVIAL_DESTRUCTOR
3824 will be set correctly. */
3825 maybe_push_cleanup_level (type);
3828 /* Handle initialization of references. DECL, TYPE, and INIT have the
3829 same meaning as in cp_finish_decl. *CLEANUP must be NULL on entry,
3830 but will be set to a new CLEANUP_STMT if a temporary is created
3831 that must be destroyed subsequently.
3833 Returns an initializer expression to use to initialize DECL, or
3834 NULL if the initialization can be performed statically.
3836 Quotes on semantics can be found in ARM 8.4.3. */
3839 grok_reference_init (tree decl, tree type, tree init, tree *cleanup)
3843 if (init == NULL_TREE)
3845 if ((DECL_LANG_SPECIFIC (decl) == 0
3846 || DECL_IN_AGGR_P (decl) == 0)
3847 && ! DECL_THIS_EXTERN (decl))
3848 error ("`%D' declared as reference but not initialized", decl);
3852 if (TREE_CODE (init) == CONSTRUCTOR)
3854 error ("ISO C++ forbids use of initializer list to initialize reference `%D'", decl);
3858 if (TREE_CODE (init) == TREE_LIST)
3859 init = build_x_compound_expr_from_list (init, "initializer");
3861 if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE)
3862 init = convert_from_reference (init);
3864 if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
3865 && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
3866 /* Note: default conversion is only called in very special cases. */
3867 init = decay_conversion (init);
3869 /* Convert INIT to the reference type TYPE. This may involve the
3870 creation of a temporary, whose lifetime must be the same as that
3871 of the reference. If so, a DECL_EXPR for the temporary will be
3872 added just after the DECL_EXPR for DECL. That's why we don't set
3873 DECL_INITIAL for local references (instead assigning to them
3874 explicitly); we need to allow the temporary to be initialized
3876 tmp = initialize_reference (type, init, decl, cleanup);
3878 if (tmp == error_mark_node)
3880 else if (tmp == NULL_TREE)
3882 error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init));
3886 if (TREE_STATIC (decl) && !TREE_CONSTANT (tmp))
3889 DECL_INITIAL (decl) = tmp;
3894 /* When parsing `int a[] = {1, 2};' we don't know the size of the
3895 array until we finish parsing the initializer. If that's the
3896 situation we're in, update DECL accordingly. */
3899 maybe_deduce_size_from_array_init (tree decl, tree init)
3901 tree type = TREE_TYPE (decl);
3903 if (TREE_CODE (type) == ARRAY_TYPE
3904 && TYPE_DOMAIN (type) == NULL_TREE
3905 && TREE_CODE (decl) != TYPE_DECL)
3907 /* do_default is really a C-ism to deal with tentative definitions.
3908 But let's leave it here to ease the eventual merge. */
3909 int do_default = !DECL_EXTERNAL (decl);
3910 tree initializer = init ? init : DECL_INITIAL (decl);
3911 int failure = complete_array_type (type, initializer, do_default);
3914 error ("initializer fails to determine size of `%D'", decl);
3919 error ("array size missing in `%D'", decl);
3920 /* If a `static' var's size isn't known, make it extern as
3921 well as static, so it does not get allocated. If it's not
3922 `static', then don't mark it extern; finish_incomplete_decl
3923 will give it a default size and it will get allocated. */
3924 else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
3925 DECL_EXTERNAL (decl) = 1;
3928 if (pedantic && TYPE_DOMAIN (type) != NULL_TREE
3929 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
3931 error ("zero-size array `%D'", decl);
3933 layout_decl (decl, 0);
3937 /* Set DECL_SIZE, DECL_ALIGN, etc. for DECL (a VAR_DECL), and issue
3938 any appropriate error messages regarding the layout. */
3941 layout_var_decl (tree decl)
3943 tree type = TREE_TYPE (decl);
3945 tree ttype = target_type (type);
3948 /* If we haven't already layed out this declaration, do so now.
3949 Note that we must not call complete type for an external object
3950 because it's type might involve templates that we are not
3951 supposed to instantiate yet. (And it's perfectly valid to say
3952 `extern X x' for some incomplete type `X'.) */
3953 if (!DECL_EXTERNAL (decl))
3954 complete_type (type);
3955 if (!DECL_SIZE (decl)
3956 && TREE_TYPE (decl) != error_mark_node
3957 && (COMPLETE_TYPE_P (type)
3958 || (TREE_CODE (type) == ARRAY_TYPE
3959 && !TYPE_DOMAIN (type)
3960 && COMPLETE_TYPE_P (TREE_TYPE (type)))))
3961 layout_decl (decl, 0);
3963 if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
3965 /* An automatic variable with an incomplete type: that is an error.
3966 Don't talk about array types here, since we took care of that
3967 message in grokdeclarator. */
3968 error ("storage size of `%D' isn't known", decl);
3969 TREE_TYPE (decl) = error_mark_node;
3972 /* Keep this code around in case we later want to control debug info
3973 based on whether a type is "used". (jason 1999-11-11) */
3975 else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype))
3976 /* Let debugger know it should output info for this type. */
3977 note_debug_info_needed (ttype);
3979 if (TREE_STATIC (decl) && DECL_CLASS_SCOPE_P (decl))
3980 note_debug_info_needed (DECL_CONTEXT (decl));
3983 if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
3984 && DECL_SIZE (decl) != NULL_TREE
3985 && ! TREE_CONSTANT (DECL_SIZE (decl)))
3987 if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
3988 constant_expression_warning (DECL_SIZE (decl));
3990 error ("storage size of `%D' isn't constant", decl);
3993 if (TREE_STATIC (decl)
3994 && !DECL_ARTIFICIAL (decl)
3995 && current_function_decl
3996 && DECL_CONTEXT (decl) == current_function_decl)
3997 push_local_name (decl);
4000 /* If a local static variable is declared in an inline function, or if
4001 we have a weak definition, we must endeavor to create only one
4002 instance of the variable at link-time. */
4005 maybe_commonize_var (tree decl)
4007 /* Static data in a function with comdat linkage also has comdat
4009 if (TREE_STATIC (decl)
4010 /* Don't mess with __FUNCTION__. */
4011 && ! DECL_ARTIFICIAL (decl)
4012 && DECL_FUNCTION_SCOPE_P (decl)
4013 /* Unfortunately, import_export_decl has not always been called
4014 before the function is processed, so we cannot simply check
4016 && (DECL_COMDAT (DECL_CONTEXT (decl))
4017 || ((DECL_DECLARED_INLINE_P (DECL_CONTEXT (decl))
4018 || DECL_TEMPLATE_INSTANTIATION (DECL_CONTEXT (decl)))
4019 && TREE_PUBLIC (DECL_CONTEXT (decl)))))
4023 /* With weak symbols, we simply make the variable COMDAT;
4024 that will cause copies in multiple translations units to
4026 comdat_linkage (decl);
4030 if (DECL_INITIAL (decl) == NULL_TREE
4031 || DECL_INITIAL (decl) == error_mark_node)
4033 /* Without weak symbols, we can use COMMON to merge
4034 uninitialized variables. */
4035 TREE_PUBLIC (decl) = 1;
4036 DECL_COMMON (decl) = 1;
4040 /* While for initialized variables, we must use internal
4041 linkage -- which means that multiple copies will not
4043 TREE_PUBLIC (decl) = 0;
4044 DECL_COMMON (decl) = 0;
4045 cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl);
4046 warning ("%J you can work around this by removing the initializer",
4051 else if (DECL_LANG_SPECIFIC (decl) && DECL_COMDAT (decl))
4052 /* Set it up again; we might have set DECL_INITIAL since the last
4054 comdat_linkage (decl);
4057 /* Issue an error message if DECL is an uninitialized const variable. */
4060 check_for_uninitialized_const_var (tree decl)
4062 tree type = TREE_TYPE (decl);
4064 /* ``Unless explicitly declared extern, a const object does not have
4065 external linkage and must be initialized. ($8.4; $12.1)'' ARM
4067 if (TREE_CODE (decl) == VAR_DECL
4068 && TREE_CODE (type) != REFERENCE_TYPE
4069 && CP_TYPE_CONST_P (type)
4070 && !TYPE_NEEDS_CONSTRUCTING (type)
4071 && !DECL_INITIAL (decl))
4072 error ("uninitialized const `%D'", decl);
4075 /* FIELD is a FIELD_DECL or NULL. In the former case, the value
4076 returned is the next FIELD_DECL (possibly FIELD itself) that can be
4077 initialized. If there are no more such fields, the return value
4081 next_initializable_field (tree field)
4084 && (TREE_CODE (field) != FIELD_DECL
4085 || (DECL_C_BIT_FIELD (field) && !DECL_NAME (field))
4086 || DECL_ARTIFICIAL (field)))
4087 field = TREE_CHAIN (field);
4092 /* Undo the brace-elision allowed by [dcl.init.aggr] in a
4093 brace-enclosed aggregate initializer.
4095 *INITP is one of a list of initializers describing a brace-enclosed
4096 initializer for an entity of the indicated aggregate TYPE. It may
4097 not presently match the shape of the TYPE; for example:
4099 struct S { int a; int b; };
4100 struct S a[] = { 1, 2, 3, 4 };
4102 Here *INITP will point to TREE_LIST of four elements, rather than a
4103 list of two elements, each itself a list of two elements. This
4104 routine transforms INIT from the former form into the latter. The
4105 revised initializer is returned. */
4108 reshape_init (tree type, tree *initp)
4112 tree old_init_value;
4114 bool brace_enclosed_p;
4117 old_init_value = (TREE_CODE (*initp) == TREE_LIST
4118 ? TREE_VALUE (*initp) : old_init);
4120 my_friendly_assert (old_init_value, 20030723);
4122 /* If the initializer is brace-enclosed, pull initializers from the
4123 enclosed elements. Advance past the brace-enclosed initializer
4125 if (TREE_CODE (old_init_value) == CONSTRUCTOR
4126 && BRACE_ENCLOSED_INITIALIZER_P (old_init_value))
4128 *initp = TREE_CHAIN (old_init);
4129 TREE_CHAIN (old_init) = NULL_TREE;
4130 inits = CONSTRUCTOR_ELTS (old_init_value);
4132 brace_enclosed_p = true;
4137 brace_enclosed_p = false;
4140 /* A non-aggregate type is always initialized with a single
4142 if (!CP_AGGREGATE_TYPE_P (type))
4144 *initp = TREE_CHAIN (old_init);
4145 TREE_CHAIN (old_init) = NULL_TREE;
4146 /* It is invalid to initialize a non-aggregate type with a
4147 brace-enclosed initializer. */
4148 if (brace_enclosed_p)
4150 error ("brace-enclosed initializer used to initialize `%T'",
4152 if (TREE_CODE (old_init) == TREE_LIST)
4153 TREE_VALUE (old_init) = error_mark_node;
4155 old_init = error_mark_node;
4163 All implicit type conversions (clause _conv_) are considered when
4164 initializing the aggregate member with an initializer from an
4165 initializer-list. If the initializer can initialize a member,
4166 the member is initialized. Otherwise, if the member is itself a
4167 non-empty subaggregate, brace elision is assumed and the
4168 initializer is considered for the initialization of the first
4169 member of the subaggregate. */
4170 if (!brace_enclosed_p
4171 && can_convert_arg (type, TREE_TYPE (old_init_value), old_init_value))
4173 *initp = TREE_CHAIN (old_init);
4174 TREE_CHAIN (old_init) = NULL_TREE;
4178 if (TREE_CODE (old_init_value) == STRING_CST
4179 && TREE_CODE (type) == ARRAY_TYPE
4180 && char_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (type))))
4182 /* [dcl.init.string]
4184 A char array (whether plain char, signed char, or unsigned char)
4185 can be initialized by a string-literal (optionally enclosed in
4186 braces); a wchar_t array can be initialized by a wide
4187 string-literal (optionally enclosed in braces). */
4188 new_init = old_init;
4189 /* Move past the initializer. */
4190 *initp = TREE_CHAIN (old_init);
4191 TREE_CHAIN (old_init) = NULL_TREE;
4195 /* Build a CONSTRUCTOR to hold the contents of the aggregate. */
4196 new_init = build_constructor (NULL_TREE, NULL_TREE);
4198 if (CLASS_TYPE_P (type))
4202 field = next_initializable_field (TYPE_FIELDS (type));
4208 An initializer for an aggregate member that is an
4209 empty class shall have the form of an empty
4210 initializer-list {}. */
4211 if (!brace_enclosed_p)
4213 error ("initializer for `%T' must be brace-enclosed",
4215 return error_mark_node;
4220 /* Loop through the initializable fields, gathering
4226 /* Handle designated initializers, as an extension. */
4227 if (TREE_PURPOSE (*initp))
4230 pedwarn ("ISO C++ does not allow designated initializers");
4231 field = lookup_field_1 (type, TREE_PURPOSE (*initp),
4232 /*want_type=*/false);
4233 if (!field || TREE_CODE (field) != FIELD_DECL)
4234 error ("`%T' has no non-static data member named `%D'",
4235 type, TREE_PURPOSE (*initp));
4240 field_init = reshape_init (TREE_TYPE (field), initp);
4241 if (field_init == error_mark_node)
4242 return error_mark_node;
4243 TREE_CHAIN (field_init) = CONSTRUCTOR_ELTS (new_init);
4244 CONSTRUCTOR_ELTS (new_init) = field_init;
4247 When a union is initialized with a brace-enclosed
4248 initializer, the braces shall only contain an
4249 initializer for the first member of the union. */
4250 if (TREE_CODE (type) == UNION_TYPE)
4252 field = next_initializable_field (TREE_CHAIN (field));
4256 else if (TREE_CODE (type) == ARRAY_TYPE
4257 || TREE_CODE (type) == VECTOR_TYPE)
4262 /* If the bound of the array is known, take no more initializers
4263 than are allowed. */
4264 max_index = NULL_TREE;
4265 if (TREE_CODE (type) == ARRAY_TYPE)
4267 if (TYPE_DOMAIN (type))
4268 max_index = array_type_nelts (type);
4272 /* For a vector, the representation type is a struct
4273 containing a single member which is an array of the
4274 appropriate size. */
4275 tree rtype = TYPE_DEBUG_REPRESENTATION_TYPE (type);
4276 if (rtype && TYPE_DOMAIN (TREE_TYPE (TYPE_FIELDS (rtype))))
4277 max_index = array_type_nelts (TREE_TYPE (TYPE_FIELDS (rtype)));
4280 /* Loop through the array elements, gathering initializers. */
4281 for (index = size_zero_node;
4282 *initp && (!max_index || !tree_int_cst_lt (max_index, index));
4283 index = size_binop (PLUS_EXPR, index, size_one_node))
4287 element_init = reshape_init (TREE_TYPE (type), initp);
4288 if (element_init == error_mark_node)
4289 return error_mark_node;
4290 TREE_CHAIN (element_init) = CONSTRUCTOR_ELTS (new_init);
4291 CONSTRUCTOR_ELTS (new_init) = element_init;
4292 if (TREE_PURPOSE (element_init))
4294 tree next_index = TREE_PURPOSE (element_init);
4295 if (TREE_CODE (next_index) == IDENTIFIER_NODE)
4297 error ("name `%D' used in a GNU-style designated "
4298 "initializer for an array", next_index);
4299 TREE_PURPOSE (element_init) = NULL_TREE;
4309 /* The initializers were placed in reverse order in the
4311 CONSTRUCTOR_ELTS (new_init) = nreverse (CONSTRUCTOR_ELTS (new_init));
4313 if (TREE_CODE (old_init) == TREE_LIST)
4314 new_init = build_tree_list (TREE_PURPOSE (old_init), new_init);
4317 /* If this was a brace-enclosed initializer and all of the
4318 initializers were not used up, there is a problem. */
4319 if (brace_enclosed_p && *initp)
4320 error ("too many initializers for `%T'", type);
4325 /* Verify INIT (the initializer for DECL), and record the
4326 initialization in DECL_INITIAL, if appropriate. CLEANUP is as for
4327 grok_reference_init.
4329 If the return value is non-NULL, it is an expression that must be
4330 evaluated dynamically to initialize DECL. */
4333 check_initializer (tree decl, tree init, int flags, tree *cleanup)
4335 tree type = TREE_TYPE (decl);
4336 tree init_code = NULL;
4338 /* If `start_decl' didn't like having an initialization, ignore it now. */
4339 if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE)
4342 /* If an initializer is present, DECL_INITIAL has been
4343 error_mark_node, to indicate that an as-of-yet unevaluated
4344 initialization will occur. From now on, DECL_INITIAL reflects
4345 the static initialization -- if any -- of DECL. */
4346 DECL_INITIAL (decl) = NULL_TREE;
4348 /* Things that are going to be initialized need to have complete
4350 TREE_TYPE (decl) = type = complete_type (TREE_TYPE (decl));
4352 if (type == error_mark_node)
4353 /* We will have already complained. */
4355 else if (init && COMPLETE_TYPE_P (type)
4356 && !TREE_CONSTANT (TYPE_SIZE (type)))
4358 error ("variable-sized object `%D' may not be initialized", decl);
4361 else if (TREE_CODE (type) == ARRAY_TYPE
4362 && !COMPLETE_TYPE_P (complete_type (TREE_TYPE (type))))
4364 error ("elements of array `%#D' have incomplete type", decl);
4367 else if (TREE_CODE (type) != ARRAY_TYPE && !COMPLETE_TYPE_P (type))
4369 error ("`%D' has incomplete type", decl);
4370 TREE_TYPE (decl) = error_mark_node;
4374 if (TREE_CODE (decl) == CONST_DECL)
4376 my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148);
4378 DECL_INITIAL (decl) = init;
4380 my_friendly_assert (init != NULL_TREE, 149);
4383 else if (!DECL_EXTERNAL (decl) && TREE_CODE (type) == REFERENCE_TYPE)
4384 init = grok_reference_init (decl, type, init, cleanup);
4387 if (TREE_CODE (init) == CONSTRUCTOR
4388 && BRACE_ENCLOSED_INITIALIZER_P (init))
4390 /* [dcl.init] paragraph 13,
4391 If T is a scalar type, then a declaration of the form
4396 reshape_init will complain about the extra braces,
4397 and doesn't do anything useful in the case where TYPE is
4398 scalar, so just don't call it. */
4399 if (CP_AGGREGATE_TYPE_P (type))
4400 init = reshape_init (type, &init);
4402 if ((*targetm.vector_opaque_p) (type))
4404 error ("opaque vector types cannot be initialized");
4405 init = error_mark_node;
4409 /* If DECL has an array type without a specific bound, deduce the
4410 array size from the initializer. */
4411 maybe_deduce_size_from_array_init (decl, init);
4412 type = TREE_TYPE (decl);
4414 if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type))
4416 if (TREE_CODE (type) == ARRAY_TYPE)
4417 goto initialize_aggr;
4418 else if (TREE_CODE (init) == CONSTRUCTOR
4419 && BRACE_ENCLOSED_INITIALIZER_P (init))
4421 if (TYPE_NON_AGGREGATE_CLASS (type))
4423 error ("`%D' must be initialized by constructor, not by `{...}'",
4425 init = error_mark_node;
4428 goto dont_use_constructor;
4432 int saved_stmts_are_full_exprs_p;
4435 saved_stmts_are_full_exprs_p = 0;
4436 if (building_stmt_tree ())
4438 saved_stmts_are_full_exprs_p = stmts_are_full_exprs_p ();
4439 current_stmt_tree ()->stmts_are_full_exprs_p = 1;
4441 init = build_aggr_init (decl, init, flags);
4442 if (building_stmt_tree ())
4443 current_stmt_tree ()->stmts_are_full_exprs_p =
4444 saved_stmts_are_full_exprs_p;
4450 dont_use_constructor:
4451 if (TREE_CODE (init) != TREE_VEC)
4453 init_code = store_init_value (decl, init);
4458 else if (DECL_EXTERNAL (decl))
4460 else if (TYPE_P (type) && TYPE_NEEDS_CONSTRUCTING (type))
4461 goto initialize_aggr;
4462 else if (IS_AGGR_TYPE (type))
4464 tree core_type = strip_array_types (type);
4466 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (core_type))
4467 error ("structure `%D' with uninitialized const members", decl);
4468 if (CLASSTYPE_REF_FIELDS_NEED_INIT (core_type))
4469 error ("structure `%D' with uninitialized reference members",
4472 check_for_uninitialized_const_var (decl);
4475 check_for_uninitialized_const_var (decl);
4477 if (init && init != error_mark_node)
4478 init_code = build (INIT_EXPR, type, decl, init);
4483 /* If DECL is not a local variable, give it RTL. */
4486 make_rtl_for_nonlocal_decl (tree decl, tree init, const char* asmspec)
4488 int toplev = toplevel_bindings_p ();
4491 /* Handle non-variables up front. */
4492 if (TREE_CODE (decl) != VAR_DECL)
4494 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
4498 /* If we see a class member here, it should be a static data
4500 if (DECL_LANG_SPECIFIC (decl) && DECL_IN_AGGR_P (decl))
4502 my_friendly_assert (TREE_STATIC (decl), 19990828);
4503 /* An in-class declaration of a static data member should be
4504 external; it is only a declaration, and not a definition. */
4505 if (init == NULL_TREE)
4506 my_friendly_assert (DECL_EXTERNAL (decl), 20000723);
4509 /* Set the DECL_ASSEMBLER_NAME for the variable. */
4512 change_decl_assembler_name (decl, get_identifier (asmspec));
4513 /* The `register' keyword, when used together with an
4514 asm-specification, indicates that the variable should be
4515 placed in a particular register. */
4516 if (DECL_REGISTER (decl))
4517 DECL_HARD_REGISTER (decl) = 1;
4520 /* We don't create any RTL for local variables. */
4521 if (DECL_FUNCTION_SCOPE_P (decl) && !TREE_STATIC (decl))
4524 /* We defer emission of local statics until the corresponding
4525 DECL_EXPR is expanded. */
4526 defer_p = DECL_FUNCTION_SCOPE_P (decl) || DECL_VIRTUAL_P (decl);
4528 /* We try to defer namespace-scope static constants so that they are
4529 not emitted into the object file unnecessarily. */
4530 if (!DECL_VIRTUAL_P (decl)
4531 && TREE_READONLY (decl)
4532 && DECL_INITIAL (decl) != NULL_TREE
4533 && DECL_INITIAL (decl) != error_mark_node
4534 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl))
4536 && !TREE_PUBLIC (decl))
4538 /* Fool with the linkage of static consts according to #pragma
4540 if (!interface_unknown && !TREE_PUBLIC (decl))
4542 TREE_PUBLIC (decl) = 1;
4543 DECL_EXTERNAL (decl) = interface_only;
4548 /* Likewise for template instantiations. */
4549 else if (DECL_COMDAT (decl))
4552 /* If we're deferring the variable, we only need to make RTL if
4553 there's an ASMSPEC. Otherwise, we'll lazily create it later when
4554 we need it. (There's no way to lazily create RTL for things that
4555 have assembly specs because the information about the specifier
4556 isn't stored in the tree, yet) */
4557 if (defer_p && asmspec)
4558 make_decl_rtl (decl, asmspec);
4559 /* If we're not deferring, go ahead and assemble the variable. */
4561 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
4564 /* Generate code to initialize DECL (a local variable). */
4567 initialize_local_var (tree decl, tree init)
4569 tree type = TREE_TYPE (decl);
4572 my_friendly_assert (TREE_CODE (decl) == VAR_DECL
4573 || TREE_CODE (decl) == RESULT_DECL,
4575 my_friendly_assert (!TREE_STATIC (decl), 20021010);
4577 if (DECL_SIZE (decl) == NULL_TREE)
4579 /* If we used it already as memory, it must stay in memory. */
4580 DECL_INITIAL (decl) = NULL_TREE;
4581 TREE_ADDRESSABLE (decl) = TREE_USED (decl);
4584 if (DECL_SIZE (decl) && type != error_mark_node)
4588 /* Compute and store the initial value. */
4589 already_used = TREE_USED (decl) || TREE_USED (type);
4591 /* Perform the initialization. */
4594 int saved_stmts_are_full_exprs_p;
4596 my_friendly_assert (building_stmt_tree (), 20000906);
4597 saved_stmts_are_full_exprs_p = stmts_are_full_exprs_p ();
4598 current_stmt_tree ()->stmts_are_full_exprs_p = 1;
4599 finish_expr_stmt (init);
4600 current_stmt_tree ()->stmts_are_full_exprs_p =
4601 saved_stmts_are_full_exprs_p;
4604 /* Set this to 0 so we can tell whether an aggregate which was
4605 initialized was ever used. Don't do this if it has a
4606 destructor, so we don't complain about the 'resource
4607 allocation is initialization' idiom. Now set
4608 attribute((unused)) on types so decls of that type will be
4609 marked used. (see TREE_USED, above.) */
4610 if (TYPE_NEEDS_CONSTRUCTING (type)
4612 && TYPE_HAS_TRIVIAL_DESTRUCTOR (type)
4613 && DECL_NAME (decl))
4614 TREE_USED (decl) = 0;
4615 else if (already_used)
4616 TREE_USED (decl) = 1;
4619 /* Generate a cleanup, if necessary. */
4620 cleanup = cxx_maybe_build_cleanup (decl);
4621 if (DECL_SIZE (decl) && cleanup)
4622 finish_decl_cleanup (decl, cleanup);
4625 /* Finish processing of a declaration;
4626 install its line number and initial value.
4627 If the length of an array type is not known before,
4628 it must be determined now, from the initial value, or it is an error.
4630 INIT holds the value of an initializer that should be allowed to escape
4633 FLAGS is LOOKUP_ONLYCONVERTING if the = init syntax was used, else 0
4634 if the (init) syntax was used. */
4637 cp_finish_decl (tree decl, tree init, tree asmspec_tree, int flags)
4640 tree ttype = NULL_TREE;
4642 const char *asmspec = NULL;
4643 int was_readonly = 0;
4645 if (decl == error_mark_node)
4650 error ("assignment (not initialization) in declaration");
4654 my_friendly_assert (TREE_CODE (decl) != RESULT_DECL, 20030619);
4656 /* Assume no cleanup is required. */
4657 cleanup = NULL_TREE;
4659 /* If a name was specified, get the string. */
4660 if (global_scope_p (current_binding_level))
4661 asmspec_tree = maybe_apply_renaming_pragma (decl, asmspec_tree);
4663 asmspec = TREE_STRING_POINTER (asmspec_tree);
4665 if (init && TREE_CODE (init) == NAMESPACE_DECL)
4667 error ("cannot initialize `%D' to namespace `%D'",
4672 if (current_class_type
4673 && CP_DECL_CONTEXT (decl) == current_class_type
4674 && TYPE_BEING_DEFINED (current_class_type)
4675 && (DECL_INITIAL (decl) || init))
4676 DECL_INITIALIZED_IN_CLASS_P (decl) = 1;
4678 if (TREE_CODE (decl) == VAR_DECL
4679 && DECL_CONTEXT (decl)
4680 && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL
4681 && DECL_CONTEXT (decl) != current_namespace
4684 /* Leave the namespace of the object. */
4685 pop_decl_namespace ();
4688 type = TREE_TYPE (decl);
4690 if (type == error_mark_node)
4693 if (TYPE_HAS_MUTABLE_P (type))
4694 TREE_READONLY (decl) = 0;
4696 if (processing_template_decl)
4698 /* Add this declaration to the statement-tree. */
4699 if (at_function_scope_p ())
4700 add_decl_expr (decl);
4702 if (init && DECL_INITIAL (decl))
4703 DECL_INITIAL (decl) = init;
4704 if (TREE_CODE (decl) == VAR_DECL
4705 && !DECL_PRETTY_FUNCTION_P (decl)
4706 && !dependent_type_p (TREE_TYPE (decl)))
4707 maybe_deduce_size_from_array_init (decl, init);
4711 /* Parameters are handled by store_parm_decls, not cp_finish_decl. */
4712 my_friendly_assert (TREE_CODE (decl) != PARM_DECL, 19990828);
4714 /* Take care of TYPE_DECLs up front. */
4715 if (TREE_CODE (decl) == TYPE_DECL)
4717 if (type != error_mark_node
4718 && IS_AGGR_TYPE (type) && DECL_NAME (decl))
4720 if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
4721 warning ("shadowing previous type declaration of `%#D'", decl);
4722 set_identifier_type_value (DECL_NAME (decl), decl);
4725 /* If we have installed this as the canonical typedef for this
4726 type, and that type has not been defined yet, delay emitting
4727 the debug information for it, as we will emit it later. */
4728 if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl
4729 && !COMPLETE_TYPE_P (TREE_TYPE (decl)))
4730 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
4732 rest_of_decl_compilation (decl, NULL,
4733 DECL_CONTEXT (decl) == NULL_TREE, at_eof);
4737 if (TREE_CODE (decl) != FUNCTION_DECL)
4738 ttype = target_type (type);
4741 /* Currently, GNU C++ puts constants in text space, making them
4742 impossible to initialize. In the future, one would hope for
4743 an operating system which understood the difference between
4744 initialization and the running of a program. */
4745 if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl))
4748 if (TYPE_NEEDS_CONSTRUCTING (type)
4749 || TREE_CODE (type) == REFERENCE_TYPE)
4750 TREE_READONLY (decl) = 0;
4753 if (TREE_CODE (decl) == VAR_DECL)
4755 /* Only PODs can have thread-local storage. Other types may require
4756 various kinds of non-trivial initialization. */
4757 if (DECL_THREAD_LOCAL (decl) && !pod_type_p (TREE_TYPE (decl)))
4758 error ("`%D' cannot be thread-local because it has non-POD type `%T'",
4759 decl, TREE_TYPE (decl));
4760 /* Convert the initializer to the type of DECL, if we have not
4761 already initialized DECL. */
4762 if (!DECL_INITIALIZED_P (decl)
4763 /* If !DECL_EXTERNAL then DECL is being defined. In the
4764 case of a static data member initialized inside the
4765 class-specifier, there can be an initializer even if DECL
4766 is *not* defined. */
4767 && (!DECL_EXTERNAL (decl) || init))
4769 init = check_initializer (decl, init, flags, &cleanup);
4770 /* Thread-local storage cannot be dynamically initialized. */
4771 if (DECL_THREAD_LOCAL (decl) && init)
4773 error ("`%D' is thread-local and so cannot be dynamically "
4774 "initialized", decl);
4781 The memory occupied by any object of static storage
4782 duration is zero-initialized at program startup before
4783 any other initialization takes place.
4785 We cannot create an appropriate initializer until after
4786 the type of DECL is finalized. If DECL_INITIAL is set,
4787 then the DECL is statically initialized, and any
4788 necessary zero-initialization has already been performed. */
4789 if (TREE_STATIC (decl) && !DECL_INITIAL (decl))
4790 DECL_INITIAL (decl) = build_zero_init (TREE_TYPE (decl),
4791 /*nelts=*/NULL_TREE,
4792 /*static_storage_p=*/true);
4793 /* Remember that the initialization for this variable has
4795 DECL_INITIALIZED_P (decl) = 1;
4797 /* If the variable has an array type, lay out the type, even if
4798 there is no initializer. It is valid to index through the
4799 array, and we must get TYPE_ALIGN set correctly on the array
4801 else if (TREE_CODE (type) == ARRAY_TYPE)
4805 /* Add this declaration to the statement-tree. This needs to happen
4806 after the call to check_initializer so that the DECL_EXPR for a
4807 reference temp is added before the DECL_EXPR for the reference itself. */
4808 if (at_function_scope_p ())
4809 add_decl_expr (decl);
4811 if (TREE_CODE (decl) == VAR_DECL)
4812 layout_var_decl (decl);
4814 /* Output the assembler code and/or RTL code for variables and functions,
4815 unless the type is an undefined structure or union.
4816 If not, it will get done when the type is completed. */
4817 if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL)
4819 if (TREE_CODE (decl) == VAR_DECL)
4820 maybe_commonize_var (decl);
4822 make_rtl_for_nonlocal_decl (decl, init, asmspec);
4824 /* Check for abstractness of the type. Notice that there is no
4825 need to strip array types here since the check for those types
4826 is already done within create_array_type_for_decl. */
4827 if (TREE_CODE (type) == FUNCTION_TYPE
4828 || TREE_CODE (type) == METHOD_TYPE)
4829 abstract_virtuals_error (decl, TREE_TYPE (type));
4831 abstract_virtuals_error (decl, type);
4833 if (TREE_CODE (decl) == FUNCTION_DECL
4834 || TREE_TYPE (decl) == error_mark_node)
4835 /* No initialization required. */
4837 else if (DECL_EXTERNAL (decl)
4838 && ! (DECL_LANG_SPECIFIC (decl)
4839 && DECL_NOT_REALLY_EXTERN (decl)))
4842 DECL_INITIAL (decl) = init;
4846 /* A variable definition. */
4847 if (DECL_FUNCTION_SCOPE_P (decl))
4849 /* This is a local declaration. */
4850 maybe_inject_for_scope_var (decl);
4851 /* Initialize the local variable. */
4852 if (processing_template_decl)
4854 if (init || DECL_INITIAL (decl) == error_mark_node)
4855 DECL_INITIAL (decl) = init;
4857 else if (!TREE_STATIC (decl))
4858 initialize_local_var (decl, init);
4861 if (TREE_STATIC (decl))
4862 expand_static_init (decl, init);
4866 /* Undo call to `pushclass' that was done in `start_decl'
4867 due to initialization of qualified member variable.
4868 I.e., Foo::x = 10; */
4870 tree context = CP_DECL_CONTEXT (decl);
4873 && (TREE_CODE (decl) == VAR_DECL
4874 /* We also have a pushclass done that we need to undo here
4875 if we're at top level and declare a method. */
4876 || TREE_CODE (decl) == FUNCTION_DECL)
4877 /* If size hasn't been set, we're still defining it,
4878 and therefore inside the class body; don't pop
4879 the binding level.. */
4880 && COMPLETE_TYPE_P (context)
4881 && context == current_class_type)
4882 pop_nested_class ();
4886 /* If a CLEANUP_STMT was created to destroy a temporary bound to a
4887 reference, insert it in the statement-tree now. */
4889 push_cleanup (decl, cleanup, false);
4894 TREE_READONLY (decl) = 1;
4896 /* If this was marked 'used', be sure it will be output. */
4897 if (lookup_attribute ("used", DECL_ATTRIBUTES (decl)))
4898 mark_decl_referenced (decl);
4901 /* This is here for a midend callback from c-common.c. */
4904 finish_decl (tree decl, tree init, tree asmspec_tree)
4906 cp_finish_decl (decl, init, asmspec_tree, 0);
4909 /* Returns a declaration for a VAR_DECL as if:
4911 extern "C" TYPE NAME;
4913 had been seen. Used to create compiler-generated global
4917 declare_global_var (tree name, tree type)
4921 push_to_top_level ();
4922 decl = build_decl (VAR_DECL, name, type);
4923 TREE_PUBLIC (decl) = 1;
4924 DECL_EXTERNAL (decl) = 1;
4925 DECL_ARTIFICIAL (decl) = 1;
4927 cp_finish_decl (decl, NULL_TREE, NULL_TREE, 0);
4928 pop_from_top_level ();
4933 /* Returns a pointer to the `atexit' function. Note that if
4934 FLAG_USE_CXA_ATEXIT is nonzero, then this will actually be the new
4935 `__cxa_atexit' function specified in the IA64 C++ ABI. */
4938 get_atexit_node (void)
4949 if (flag_use_cxa_atexit)
4951 /* The declaration for `__cxa_atexit' is:
4953 int __cxa_atexit (void (*)(void *), void *, void *)
4955 We build up the argument types and then then function type
4958 /* First, build the pointer-to-function type for the first
4960 arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node);
4961 fn_type = build_function_type (void_type_node, arg_types);
4962 fn_ptr_type = build_pointer_type (fn_type);
4963 /* Then, build the rest of the argument types. */
4964 arg_types = tree_cons (NULL_TREE, ptr_type_node, void_list_node);
4965 arg_types = tree_cons (NULL_TREE, ptr_type_node, arg_types);
4966 arg_types = tree_cons (NULL_TREE, fn_ptr_type, arg_types);
4967 /* And the final __cxa_atexit type. */
4968 fn_type = build_function_type (integer_type_node, arg_types);
4969 fn_ptr_type = build_pointer_type (fn_type);
4970 name = "__cxa_atexit";
4974 /* The declaration for `atexit' is:
4976 int atexit (void (*)());
4978 We build up the argument types and then then function type
4980 fn_type = build_function_type (void_type_node, void_list_node);
4981 fn_ptr_type = build_pointer_type (fn_type);
4982 arg_types = tree_cons (NULL_TREE, fn_ptr_type, void_list_node);
4983 /* Build the final atexit type. */
4984 fn_type = build_function_type (integer_type_node, arg_types);
4988 /* Now, build the function declaration. */
4989 push_lang_context (lang_name_c);
4990 atexit_fndecl = build_library_fn_ptr (name, fn_type);
4991 mark_used (atexit_fndecl);
4992 pop_lang_context ();
4993 atexit_node = decay_conversion (atexit_fndecl);
4998 /* Returns the __dso_handle VAR_DECL. */
5001 get_dso_handle_node (void)
5003 if (dso_handle_node)
5004 return dso_handle_node;
5006 /* Declare the variable. */
5007 dso_handle_node = declare_global_var (get_identifier ("__dso_handle"),
5010 return dso_handle_node;
5013 /* Begin a new function with internal linkage whose job will be simply
5014 to destroy some particular variable. */
5016 static GTY(()) int start_cleanup_cnt;
5019 start_cleanup_fn (void)
5021 int old_interface_only = interface_only;
5022 int old_interface_unknown = interface_unknown;
5028 push_to_top_level ();
5030 /* No need to mangle this. */
5031 push_lang_context (lang_name_c);
5034 interface_unknown = 1;
5036 /* Build the parameter-types. */
5037 parmtypes = void_list_node;
5038 /* Functions passed to __cxa_atexit take an additional parameter.
5039 We'll just ignore it. After we implement the new calling
5040 convention for destructors, we can eliminate the use of
5041 additional cleanup functions entirely in the -fnew-abi case. */
5042 if (flag_use_cxa_atexit)
5043 parmtypes = tree_cons (NULL_TREE, ptr_type_node, parmtypes);
5044 /* Build the function type itself. */
5045 fntype = build_function_type (void_type_node, parmtypes);
5046 /* Build the name of the function. */
5047 sprintf (name, "__tcf_%d", start_cleanup_cnt++);
5048 /* Build the function declaration. */
5049 fndecl = build_lang_decl (FUNCTION_DECL, get_identifier (name), fntype);
5050 /* It's a function with internal linkage, generated by the
5052 TREE_PUBLIC (fndecl) = 0;
5053 DECL_ARTIFICIAL (fndecl) = 1;
5054 /* Make the function `inline' so that it is only emitted if it is
5055 actually needed. It is unlikely that it will be inlined, since
5056 it is only called via a function pointer, but we avoid unnecessary
5057 emissions this way. */
5058 DECL_INLINE (fndecl) = 1;
5059 DECL_DECLARED_INLINE_P (fndecl) = 1;
5060 DECL_INTERFACE_KNOWN (fndecl) = 1;
5061 /* Build the parameter. */
5062 if (flag_use_cxa_atexit)
5066 parmdecl = cp_build_parm_decl (NULL_TREE, ptr_type_node);
5067 DECL_CONTEXT (parmdecl) = fndecl;
5068 TREE_USED (parmdecl) = 1;
5069 DECL_ARGUMENTS (fndecl) = parmdecl;
5073 start_preparsed_function (fndecl, NULL_TREE, SF_PRE_PARSED);
5075 interface_unknown = old_interface_unknown;
5076 interface_only = old_interface_only;
5078 pop_lang_context ();
5080 return current_function_decl;
5083 /* Finish the cleanup function begun by start_cleanup_fn. */
5086 end_cleanup_fn (void)
5088 expand_or_defer_fn (finish_function (0));
5090 pop_from_top_level ();
5093 /* Generate code to handle the destruction of DECL, an object with
5094 static storage duration. */
5097 register_dtor_fn (tree decl)
5104 if (TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl)))
5107 /* Call build_cleanup before we enter the anonymous function so that
5108 any access checks will be done relative to the current scope,
5109 rather than the scope of the anonymous function. */
5110 build_cleanup (decl);
5112 /* Now start the function. */
5113 cleanup = start_cleanup_fn ();
5115 /* Now, recompute the cleanup. It may contain SAVE_EXPRs that refer
5116 to the original function, rather than the anonymous one. That
5117 will make the back-end think that nested functions are in use,
5118 which causes confusion. */
5120 push_deferring_access_checks (dk_no_check);
5121 fcall = build_cleanup (decl);
5122 pop_deferring_access_checks ();
5124 /* Create the body of the anonymous function. */
5125 compound_stmt = begin_compound_stmt (BCS_FN_BODY);
5126 finish_expr_stmt (fcall);
5127 finish_compound_stmt (compound_stmt);
5130 /* Call atexit with the cleanup function. */
5131 cxx_mark_addressable (cleanup);
5132 mark_used (cleanup);
5133 cleanup = build_unary_op (ADDR_EXPR, cleanup, 0);
5134 if (flag_use_cxa_atexit)
5136 args = tree_cons (NULL_TREE,
5137 build_unary_op (ADDR_EXPR, get_dso_handle_node (), 0),
5139 args = tree_cons (NULL_TREE, null_pointer_node, args);
5140 args = tree_cons (NULL_TREE, cleanup, args);
5143 args = tree_cons (NULL_TREE, cleanup, NULL_TREE);
5144 finish_expr_stmt (build_function_call (get_atexit_node (), args));
5147 /* DECL is a VAR_DECL with static storage duration. INIT, if present,
5148 is its initializer. Generate code to handle the construction
5149 and destruction of DECL. */
5152 expand_static_init (tree decl, tree init)
5154 my_friendly_assert (TREE_CODE (decl) == VAR_DECL, 20021010);
5155 my_friendly_assert (TREE_STATIC (decl), 20021010);
5157 /* Some variables require no initialization. */
5159 && !TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))
5160 && TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl)))
5163 if (! toplevel_bindings_p ())
5165 /* Emit code to perform this initialization but once. */
5172 /* Emit code to perform this initialization but once. This code
5175 static int guard = 0;
5177 // Do initialization.
5179 // Register variable for destruction at end of program.
5182 Note that the `temp' variable is only set to 1 *after* the
5183 initialization is complete. This ensures that an exception,
5184 thrown during the construction, will cause the variable to
5185 reinitialized when we pass through this code again, as per:
5189 If the initialization exits by throwing an exception, the
5190 initialization is not complete, so it will be tried again
5191 the next time control enters the declaration.
5193 In theory, this process should be thread-safe, too; multiple
5194 threads should not be able to initialize the variable more
5195 than once. We don't yet attempt to ensure thread-safety. */
5197 /* Create the guard variable. */
5198 guard = get_guard (decl);
5200 /* Begin the conditional initialization. */
5201 if_stmt = begin_if_stmt ();
5202 finish_if_stmt_cond (get_guard_cond (guard), if_stmt);
5203 then_clause = begin_compound_stmt (0);
5205 /* Do the initialization itself. */
5206 assignment = init ? init : NULL_TREE;
5208 /* Once the assignment is complete, set TEMP to 1. Since the
5209 construction of the static object is complete at this point,
5210 we want to make sure TEMP is set to 1 even if a temporary
5211 constructed during the initialization throws an exception
5212 when it is destroyed. So, we combine the initialization and
5213 the assignment to TEMP into a single expression, ensuring
5214 that when we call finish_expr_stmt the cleanups will not be
5215 run until after TEMP is set to 1. */
5216 guard_init = set_guard (guard);
5218 assignment = build_compound_expr (assignment, guard_init);
5220 assignment = guard_init;
5221 finish_expr_stmt (assignment);
5223 /* Use atexit to register a function for destroying this static
5225 register_dtor_fn (decl);
5227 finish_compound_stmt (then_clause);
5228 finish_then_clause (if_stmt);
5229 finish_if_stmt (if_stmt);
5232 static_aggregates = tree_cons (init, decl, static_aggregates);
5236 /* Make TYPE a complete type based on INITIAL_VALUE.
5237 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
5238 2 if there was no information (in which case assume 0 if DO_DEFAULT). */
5241 complete_array_type (tree type, tree initial_value, int do_default)
5243 tree maxindex = NULL_TREE;
5248 /* An array of character type can be initialized from a
5249 brace-enclosed string constant. */
5250 if (char_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (type)))
5251 && TREE_CODE (initial_value) == CONSTRUCTOR
5252 && CONSTRUCTOR_ELTS (initial_value)
5253 && (TREE_CODE (TREE_VALUE (CONSTRUCTOR_ELTS (initial_value)))
5255 && TREE_CHAIN (CONSTRUCTOR_ELTS (initial_value)) == NULL_TREE)
5256 initial_value = TREE_VALUE (CONSTRUCTOR_ELTS (initial_value));
5258 /* Note MAXINDEX is really the maximum index, one less than the
5260 if (TREE_CODE (initial_value) == STRING_CST)
5263 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
5264 maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
5267 else if (TREE_CODE (initial_value) == CONSTRUCTOR)
5269 tree elts = CONSTRUCTOR_ELTS (initial_value);
5271 maxindex = ssize_int (-1);
5272 for (; elts; elts = TREE_CHAIN (elts))
5274 if (TREE_PURPOSE (elts))
5275 maxindex = TREE_PURPOSE (elts);
5277 maxindex = size_binop (PLUS_EXPR, maxindex, ssize_int (1));
5279 maxindex = copy_node (maxindex);
5283 /* Make an error message unless that happened already. */
5284 if (initial_value != error_mark_node)
5287 initial_value = NULL_TREE;
5289 /* Prevent further error messages. */
5290 maxindex = build_int_2 (0, 0);
5297 maxindex = build_int_2 (0, 0);
5307 domain = build_index_type (maxindex);
5308 TYPE_DOMAIN (type) = domain;
5310 if (! TREE_TYPE (maxindex))
5311 TREE_TYPE (maxindex) = domain;
5313 itype = TREE_TYPE (initial_value);
5316 if (itype && !TYPE_DOMAIN (itype))
5317 TYPE_DOMAIN (itype) = domain;
5318 /* The type of the main variant should never be used for arrays
5319 of different sizes. It should only ever be completed with the
5320 size of the array. */
5321 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)))
5322 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = domain;
5324 elt_type = TREE_TYPE (type);
5325 TYPE_NEEDS_CONSTRUCTING (type)
5326 = TYPE_NEEDS_CONSTRUCTING (TYPE_MAIN_VARIANT (elt_type));
5327 TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
5328 = TYPE_HAS_NONTRIVIAL_DESTRUCTOR (TYPE_MAIN_VARIANT (elt_type));
5331 /* Lay out the type now that we can get the real answer. */
5338 /* Return zero if something is declared to be a member of type
5339 CTYPE when in the context of CUR_TYPE. STRING is the error
5340 message to print in that case. Otherwise, quietly return 1. */
5343 member_function_or_else (tree ctype, tree cur_type, enum overload_flags flags)
5345 if (ctype && ctype != cur_type)
5347 if (flags == DTOR_FLAG)
5348 error ("destructor for alien class `%T' cannot be a member",
5351 error ("constructor for alien class `%T' cannot be a member",
5358 /* Subroutine of `grokdeclarator'. */
5360 /* Generate errors possibly applicable for a given set of specifiers.
5361 This is for ARM $7.1.2. */
5364 bad_specifiers (tree object,
5373 error ("`%D' declared as a `virtual' %s", object, type);
5375 error ("`%D' declared as an `inline' %s", object, type);
5377 error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
5380 cp_error_at ("`%D' declared as a friend", object);
5382 && (TREE_CODE (object) == TYPE_DECL
5383 || (!TYPE_PTRFN_P (TREE_TYPE (object))
5384 && !TYPE_REFFN_P (TREE_TYPE (object))
5385 && !TYPE_PTRMEMFUNC_P (TREE_TYPE (object)))))
5386 cp_error_at ("`%D' declared with an exception specification", object);
5389 /* CTYPE is class type, or null if non-class.
5390 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
5392 DECLARATOR is the function's name.
5393 PARMS is a chain of PARM_DECLs for the function.
5394 VIRTUALP is truthvalue of whether the function is virtual or not.
5395 FLAGS are to be passed through to `grokclassfn'.
5396 QUALS are qualifiers indicating whether the function is `const'
5398 RAISES is a list of exceptions that this function can raise.
5399 CHECK is 1 if we must find this method in CTYPE, 0 if we should
5400 not look, and -1 if we should not call `grokclassfn' at all.
5402 Returns `NULL_TREE' if something goes wrong, after issuing
5403 applicable error messages. */
5406 grokfndecl (tree ctype,
5410 tree orig_declarator,
5412 enum overload_flags flags,
5424 int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
5425 int has_default_arg = 0;
5429 type = build_exception_variant (type, raises);
5431 decl = build_lang_decl (FUNCTION_DECL, declarator, type);
5432 DECL_ARGUMENTS (decl) = parms;
5433 /* Propagate volatile out from type to decl. */
5434 if (TYPE_VOLATILE (type))
5435 TREE_THIS_VOLATILE (decl) = 1;
5437 /* If this decl has namespace scope, set that up. */
5439 set_decl_namespace (decl, in_namespace, friendp);
5441 DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
5443 /* `main' and builtins have implicit 'C' linkage. */
5444 if ((MAIN_NAME_P (declarator)
5445 || (IDENTIFIER_LENGTH (declarator) > 10
5446 && IDENTIFIER_POINTER (declarator)[0] == '_'
5447 && IDENTIFIER_POINTER (declarator)[1] == '_'
5448 && strncmp (IDENTIFIER_POINTER (declarator)+2, "builtin_", 8) == 0))
5449 && current_lang_name == lang_name_cplusplus
5450 && ctype == NULL_TREE
5451 /* NULL_TREE means global namespace. */
5452 && DECL_CONTEXT (decl) == NULL_TREE)
5453 SET_DECL_LANGUAGE (decl, lang_c);
5455 /* Should probably propagate const out from type to decl I bet (mrs). */
5458 DECL_STATIC_FUNCTION_P (decl) = 1;
5459 DECL_CONTEXT (decl) = ctype;
5463 DECL_CONTEXT (decl) = ctype;
5465 if (ctype == NULL_TREE && DECL_MAIN_P (decl))
5467 if (processing_template_decl)
5468 error ("cannot declare `::main' to be a template");
5470 error ("cannot declare `::main' to be inline");
5472 error ("cannot declare `::main' to be static");
5473 if (!same_type_p (TREE_TYPE (TREE_TYPE (decl)),
5475 error ("`main' must return `int'");
5480 /* Members of anonymous types and local classes have no linkage; make
5481 them internal. If a typedef is made later, this will be changed. */
5482 if (ctype && (TYPE_ANONYMOUS_P (ctype)
5483 || decl_function_context (TYPE_MAIN_DECL (ctype))))
5488 /* [basic.link]: A name with no linkage (notably, the name of a class
5489 or enumeration declared in a local scope) shall not be used to
5490 declare an entity with linkage.
5492 Only check this for public decls for now. See core 319, 389. */
5493 t = no_linkage_check (TREE_TYPE (decl));
5496 if (TYPE_ANONYMOUS_P (t))
5498 if (DECL_EXTERN_C_P (decl))
5499 /* Allow this; it's pretty common in C. */;
5502 pedwarn ("non-local function `%#D' uses anonymous type",
5504 if (DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
5506 `%#D' does not refer to the unqualified type, so it is not used for linkage",
5511 pedwarn ("non-local function `%#D' uses local type `%T'",
5516 TREE_PUBLIC (decl) = publicp;
5519 DECL_INTERFACE_KNOWN (decl) = 1;
5520 DECL_NOT_REALLY_EXTERN (decl) = 1;
5523 /* If the declaration was declared inline, mark it as such. */
5525 DECL_DECLARED_INLINE_P (decl) = 1;
5526 /* We inline functions that are explicitly declared inline, or, when
5527 the user explicitly asks us to, all functions. */
5528 if (DECL_DECLARED_INLINE_P (decl)
5529 || (flag_inline_trees == 2 && !DECL_INLINE (decl) && funcdef_flag))
5530 DECL_INLINE (decl) = 1;
5532 DECL_EXTERNAL (decl) = 1;
5533 if (quals && TREE_CODE (type) == FUNCTION_TYPE)
5535 error ("%smember function `%D' cannot have cv-qualifier",
5536 (ctype ? "static " : "non-"), decl);
5537 quals = TYPE_UNQUALIFIED;
5540 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl)))
5541 grok_op_properties (decl, friendp, /*complain=*/true);
5543 if (ctype && decl_function_context (decl))
5544 DECL_NO_STATIC_CHAIN (decl) = 1;
5546 for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t))
5547 if (TREE_PURPOSE (t)
5548 && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
5550 has_default_arg = 1;
5555 && TREE_CODE (orig_declarator) == TEMPLATE_ID_EXPR)
5559 ("defining explicit specialization `%D' in friend declaration",
5563 tree fns = TREE_OPERAND (orig_declarator, 0);
5564 tree args = TREE_OPERAND (orig_declarator, 1);
5566 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
5568 /* Something like `template <class T> friend void f<T>()'. */
5569 error ("invalid use of template-id `%D' in declaration of primary template",
5575 /* A friend declaration of the form friend void f<>(). Record
5576 the information in the TEMPLATE_ID_EXPR. */
5577 SET_DECL_IMPLICIT_INSTANTIATION (decl);
5579 if (TREE_CODE (fns) == COMPONENT_REF)
5581 /* Due to bison parser ickiness, we will have already looked
5582 up an operator_name or PFUNCNAME within the current class
5583 (see template_id in parse.y). If the current class contains
5584 such a name, we'll get a COMPONENT_REF here. Undo that. */
5586 my_friendly_assert (TREE_TYPE (TREE_OPERAND (fns, 0))
5587 == current_class_type, 20001120);
5588 fns = TREE_OPERAND (fns, 1);
5590 my_friendly_assert (TREE_CODE (fns) == IDENTIFIER_NODE
5591 || TREE_CODE (fns) == OVERLOAD, 20001120);
5592 DECL_TEMPLATE_INFO (decl) = tree_cons (fns, args, NULL_TREE);
5594 if (has_default_arg)
5596 error ("default arguments are not allowed in declaration of friend template specialization `%D'",
5603 error ("`inline' is not allowed in declaration of friend template specialization `%D'",
5611 /* Make the init_value nonzero so pushdecl knows this is not
5612 tentative. error_mark_node is replaced later with the BLOCK. */
5613 DECL_INITIAL (decl) = error_mark_node;
5615 if (TYPE_NOTHROW_P (type) || nothrow_libfn_p (decl))
5616 TREE_NOTHROW (decl) = 1;
5618 /* Caller will do the rest of this. */
5622 if (flags == NO_SPECIAL && ctype && constructor_name_p (declarator, ctype))
5623 DECL_CONSTRUCTOR_P (decl) = 1;
5625 /* Function gets the ugly name, field gets the nice one. This call
5626 may change the type of the function (because of default
5628 if (ctype != NULL_TREE)
5629 grokclassfn (ctype, decl, flags, quals);
5631 decl = check_explicit_specialization (orig_declarator, decl,
5633 2 * (funcdef_flag != 0) +
5634 4 * (friendp != 0));
5635 if (decl == error_mark_node)
5638 if (ctype != NULL_TREE
5639 && (! TYPE_FOR_JAVA (ctype) || check_java_method (decl))
5644 old_decl = check_classfn (ctype, decl,
5645 (processing_template_decl
5646 > template_class_depth (ctype))
5647 ? current_template_parms
5650 if (old_decl && TREE_CODE (old_decl) == TEMPLATE_DECL)
5651 /* Because grokfndecl is always supposed to return a
5652 FUNCTION_DECL, we pull out the DECL_TEMPLATE_RESULT
5653 here. We depend on our callers to figure out that its
5654 really a template that's being returned. */
5655 old_decl = DECL_TEMPLATE_RESULT (old_decl);
5657 if (old_decl && DECL_STATIC_FUNCTION_P (old_decl)
5658 && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
5659 /* Remove the `this' parm added by grokclassfn.
5660 XXX Isn't this done in start_function, too? */
5661 revert_static_member_fn (decl);
5662 if (old_decl && DECL_ARTIFICIAL (old_decl))
5663 error ("definition of implicitly-declared `%D'", old_decl);
5670 /* Since we've smashed OLD_DECL to its
5671 DECL_TEMPLATE_RESULT, we must do the same to DECL. */
5672 if (TREE_CODE (decl) == TEMPLATE_DECL)
5673 decl = DECL_TEMPLATE_RESULT (decl);
5675 /* Attempt to merge the declarations. This can fail, in
5676 the case of some invalid specialization declarations. */
5677 pop_p = push_scope (ctype);
5678 ok = duplicate_decls (decl, old_decl);
5683 error ("no `%#D' member function declared in class `%T'",
5691 if (DECL_CONSTRUCTOR_P (decl) && !grok_ctor_properties (ctype, decl))
5694 if (ctype == NULL_TREE || check)
5698 DECL_VIRTUAL_P (decl) = 1;
5703 /* Create a VAR_DECL named NAME with the indicated TYPE.
5705 If SCOPE is non-NULL, it is the class type or namespace containing
5706 the variable. If SCOPE is NULL, the variable should is created in
5707 the innermost enclosings scope. */
5710 grokvardecl (tree type,
5712 cp_decl_specifier_seq *declspecs,
5719 my_friendly_assert (!name || TREE_CODE (name) == IDENTIFIER_NODE,
5722 /* Compute the scope in which to place the variable. */
5725 /* An explicit "extern" specifier indicates a namespace-scope
5727 if (declspecs->storage_class == sc_extern)
5728 scope = current_namespace;
5729 else if (!at_function_scope_p ())
5731 scope = current_scope ();
5733 scope = current_namespace;
5738 && (/* If the variable is a namespace-scope variable declared in a
5739 template, we need DECL_LANG_SPECIFIC. */
5740 (TREE_CODE (scope) == NAMESPACE_DECL && processing_template_decl)
5741 /* Similarly for namespace-scope variables with language linkage
5743 || (TREE_CODE (scope) == NAMESPACE_DECL
5744 && current_lang_name != lang_name_cplusplus)
5745 /* Similarly for static data members. */
5747 decl = build_lang_decl (VAR_DECL, name, type);
5749 decl = build_decl (VAR_DECL, name, type);
5751 if (scope && TREE_CODE (scope) == NAMESPACE_DECL)
5752 set_decl_namespace (decl, scope, 0);
5754 DECL_CONTEXT (decl) = scope;
5756 if (declspecs->storage_class == sc_extern)
5758 DECL_THIS_EXTERN (decl) = 1;
5759 DECL_EXTERNAL (decl) = !initialized;
5762 /* In class context, static means one per class,
5763 public access, and static storage. */
5764 if (DECL_CLASS_SCOPE_P (decl))
5766 TREE_PUBLIC (decl) = 1;
5767 TREE_STATIC (decl) = 1;
5768 DECL_EXTERNAL (decl) = 0;
5770 /* At top level, either `static' or no s.c. makes a definition
5771 (perhaps tentative), and absence of `static' makes it public. */
5772 else if (toplevel_bindings_p ())
5774 TREE_PUBLIC (decl) = (declspecs->storage_class != sc_static
5775 && (DECL_THIS_EXTERN (decl) || ! constp));
5776 TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
5778 /* Not at top level, only `static' makes a static definition. */
5781 TREE_STATIC (decl) = declspecs->storage_class == sc_static;
5782 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
5785 if (declspecs->specs[(int)ds_thread])
5787 if (targetm.have_tls)
5788 DECL_THREAD_LOCAL (decl) = 1;
5790 /* A mere warning is sure to result in improper semantics
5791 at runtime. Don't bother to allow this to compile. */
5792 error ("thread-local storage not supported for this target");
5795 if (TREE_PUBLIC (decl))
5797 /* [basic.link]: A name with no linkage (notably, the name of a class
5798 or enumeration declared in a local scope) shall not be used to
5799 declare an entity with linkage.
5801 Only check this for public decls for now. */
5802 tree t = no_linkage_check (TREE_TYPE (decl));
5805 if (TYPE_ANONYMOUS_P (t))
5807 if (DECL_EXTERN_C_P (decl))
5808 /* Allow this; it's pretty common in C. */;
5811 pedwarn ("non-local variable `%#D' uses anonymous type",
5813 if (DECL_ORIGINAL_TYPE (TYPE_NAME (t)))
5815 `%#D' does not refer to the unqualified type, so it is not used for linkage",
5820 pedwarn ("non-local variable `%#D' uses local type `%T'",
5828 /* Create and return a canonical pointer to member function type, for
5829 TYPE, which is a POINTER_TYPE to a METHOD_TYPE. */
5832 build_ptrmemfunc_type (tree type)
5836 tree unqualified_variant = NULL_TREE;
5838 if (type == error_mark_node)
5841 /* If a canonical type already exists for this type, use it. We use
5842 this method instead of type_hash_canon, because it only does a
5843 simple equality check on the list of field members. */
5845 if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
5848 /* Make sure that we always have the unqualified pointer-to-member
5850 if (cp_type_quals (type) != TYPE_UNQUALIFIED)
5852 = build_ptrmemfunc_type (TYPE_MAIN_VARIANT (type));
5854 t = make_aggr_type (RECORD_TYPE);
5855 /* Let the front-end know this is a pointer to member function... */
5856 TYPE_PTRMEMFUNC_FLAG (t) = 1;
5857 /* ... and not really an aggregate. */
5858 SET_IS_AGGR_TYPE (t, 0);
5860 field = build_decl (FIELD_DECL, pfn_identifier, type);
5863 field = build_decl (FIELD_DECL, delta_identifier, delta_type_node);
5864 TREE_CHAIN (field) = fields;
5867 finish_builtin_struct (t, "__ptrmemfunc_type", fields, ptr_type_node);
5869 /* Zap out the name so that the back-end will give us the debugging
5870 information for this anonymous RECORD_TYPE. */
5871 TYPE_NAME (t) = NULL_TREE;
5873 /* If this is not the unqualified form of this pointer-to-member
5874 type, set the TYPE_MAIN_VARIANT for this type to be the
5875 unqualified type. Since they are actually RECORD_TYPEs that are
5876 not variants of each other, we must do this manually. */
5877 if (cp_type_quals (type) != TYPE_UNQUALIFIED)
5879 t = build_qualified_type (t, cp_type_quals (type));
5880 TYPE_MAIN_VARIANT (t) = unqualified_variant;
5881 TYPE_NEXT_VARIANT (t) = TYPE_NEXT_VARIANT (unqualified_variant);
5882 TYPE_NEXT_VARIANT (unqualified_variant) = t;
5885 /* Cache this pointer-to-member type so that we can find it again
5887 TYPE_SET_PTRMEMFUNC_TYPE (type, t);
5892 /* Create and return a pointer to data member type. */
5895 build_ptrmem_type (tree class_type, tree member_type)
5897 if (TREE_CODE (member_type) == METHOD_TYPE)
5901 arg_types = TYPE_ARG_TYPES (member_type);
5902 class_type = (cp_build_qualified_type
5904 cp_type_quals (TREE_TYPE (TREE_VALUE (arg_types)))));
5906 = build_method_type_directly (class_type,
5907 TREE_TYPE (member_type),
5908 TREE_CHAIN (arg_types));
5909 return build_ptrmemfunc_type (build_pointer_type (member_type));
5913 my_friendly_assert (TREE_CODE (member_type) != FUNCTION_TYPE,
5915 return build_offset_type (class_type, member_type);
5919 /* DECL is a VAR_DECL defined in-class, whose TYPE is also given.
5920 Check to see that the definition is valid. Issue appropriate error
5921 messages. Return 1 if the definition is particularly bad, or 0
5925 check_static_variable_definition (tree decl, tree type)
5927 /* Motion 10 at San Diego: If a static const integral data member is
5928 initialized with an integral constant expression, the initializer
5929 may appear either in the declaration (within the class), or in
5930 the definition, but not both. If it appears in the class, the
5931 member is a member constant. The file-scope definition is always
5933 if (!ARITHMETIC_TYPE_P (type) && TREE_CODE (type) != ENUMERAL_TYPE)
5935 error ("invalid in-class initialization of static data member of non-integral type `%T'",
5937 /* If we just return the declaration, crashes will sometimes
5938 occur. We therefore return void_type_node, as if this were a
5939 friend declaration, to cause callers to completely ignore
5940 this declaration. */
5943 else if (!CP_TYPE_CONST_P (type))
5944 error ("ISO C++ forbids in-class initialization of non-const static member `%D'",
5946 else if (pedantic && !INTEGRAL_TYPE_P (type))
5947 pedwarn ("ISO C++ forbids initialization of member constant `%D' of non-integral type `%T'", decl, type);
5952 /* Given the SIZE (i.e., number of elements) in an array, compute an
5953 appropriate index type for the array. If non-NULL, NAME is the
5954 name of the thing being declared. */
5957 compute_array_index_type (tree name, tree size)
5959 tree type = TREE_TYPE (size);
5962 /* The array bound must be an integer type. */
5963 if (!dependent_type_p (type) && !INTEGRAL_TYPE_P (type))
5966 error ("size of array `%D' has non-integral type `%T'", name, type);
5968 error ("size of array has non-integral type `%T'", type);
5969 size = integer_one_node;
5970 type = TREE_TYPE (size);
5973 if (abi_version_at_least (2)
5974 /* We should only handle value dependent expressions specially. */
5975 ? value_dependent_expression_p (size)
5976 /* But for abi-1, we handled all instances in templates. This
5977 effects the manglings produced. */
5978 : processing_template_decl)
5979 return build_index_type (build_min (MINUS_EXPR, sizetype,
5980 size, integer_one_node));
5982 /* The size might be the result of a cast. */
5983 STRIP_TYPE_NOPS (size);
5985 /* It might be a const variable or enumeration constant. */
5986 size = decl_constant_value (size);
5988 /* Normally, the array-bound will be a constant. */
5989 if (TREE_CODE (size) == INTEGER_CST)
5991 /* Check to see if the array bound overflowed. Make that an
5992 error, no matter how generous we're being. */
5993 int old_flag_pedantic_errors = flag_pedantic_errors;
5994 int old_pedantic = pedantic;
5995 pedantic = flag_pedantic_errors = 1;
5996 constant_expression_warning (size);
5997 pedantic = old_pedantic;
5998 flag_pedantic_errors = old_flag_pedantic_errors;
6000 /* An array must have a positive number of elements. */
6001 if (INT_CST_LT (size, integer_zero_node))
6004 error ("size of array `%D' is negative", name);
6006 error ("size of array is negative");
6007 size = integer_one_node;
6009 /* As an extension we allow zero-sized arrays. We always allow
6010 them in system headers because glibc uses them. */
6011 else if (integer_zerop (size) && pedantic && !in_system_header)
6014 pedwarn ("ISO C++ forbids zero-size array `%D'", name);
6016 pedwarn ("ISO C++ forbids zero-size array");
6019 else if (TREE_CONSTANT (size))
6021 /* `(int) &fn' is not a valid array bound. */
6023 error ("size of array `%D' is not an integral constant-expression",
6026 error ("size of array is not an integral constant-expression");
6031 pedwarn ("ISO C++ forbids variable-size array `%D'", name);
6033 pedwarn ("ISO C++ forbids variable-size array");
6036 if (processing_template_decl && !TREE_CONSTANT (size))
6037 /* A variable sized array. */
6038 itype = build_min (MINUS_EXPR, sizetype, size, integer_one_node);
6041 /* Compute the index of the largest element in the array. It is
6042 one less than the number of elements in the array. */
6044 = fold (cp_build_binary_op (MINUS_EXPR,
6045 cp_convert (ssizetype, size),
6046 cp_convert (ssizetype, integer_one_node)));
6047 if (!TREE_CONSTANT (itype))
6048 /* A variable sized array. */
6049 itype = variable_size (itype);
6050 /* Make sure that there was no overflow when creating to a signed
6051 index type. (For example, on a 32-bit machine, an array with
6052 size 2^32 - 1 is too big.) */
6053 else if (TREE_OVERFLOW (itype))
6055 error ("overflow in array dimension");
6056 TREE_OVERFLOW (itype) = 0;
6060 /* Create and return the appropriate index type. */
6061 return build_index_type (itype);
6064 /* Returns the scope (if any) in which the entity declared by
6065 DECLARATOR will be located. If the entity was declared with an
6066 unqualified name, NULL_TREE is returned. */
6069 get_scope_of_declarator (const cp_declarator *declarator)
6071 while (declarator && declarator->kind != cdk_id)
6072 declarator = declarator->declarator;
6074 /* If the declarator-id is a SCOPE_REF, the scope in which the
6075 declaration occurs is the first operand. */
6077 && declarator->u.id.name
6078 && TREE_CODE (declarator->u.id.name) == SCOPE_REF)
6079 return TREE_OPERAND (declarator->u.id.name, 0);
6081 /* Otherwise, the declarator is not a quablified name; the entity will
6082 be declared in the current scope. */
6086 /* Returns an ARRAY_TYPE for an array with SIZE elements of the
6087 indicated TYPE. If non-NULL, NAME is the NAME of the declaration
6091 create_array_type_for_decl (tree name, tree type, tree size)
6093 tree itype = NULL_TREE;
6094 const char* error_msg;
6096 /* If things have already gone awry, bail now. */
6097 if (type == error_mark_node || size == error_mark_node)
6098 return error_mark_node;
6100 /* Assume that everything will go OK. */
6103 /* There are some types which cannot be array elements. */
6104 switch (TREE_CODE (type))
6107 error_msg = "array of void";
6111 error_msg = "array of functions";
6114 case REFERENCE_TYPE:
6115 error_msg = "array of references";
6119 error_msg = "array of function members";
6126 /* If something went wrong, issue an error-message and return. */
6130 error ("declaration of `%D' as %s", name, error_msg);
6132 error ("creating %s", error_msg);
6134 return error_mark_node;
6139 The constant expressions that specify the bounds of the arrays
6140 can be omitted only for the first member of the sequence. */
6141 if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type))
6144 error ("declaration of `%D' as multidimensional array must have bounds for all dimensions except the first",
6147 error ("multidimensional array must have bounds for all dimensions except the first");
6149 return error_mark_node;
6152 /* Figure out the index type for the array. */
6154 itype = compute_array_index_type (name, size);
6157 T is called the array element type; this type shall not be [...] an
6158 abstract class type. */
6159 abstract_virtuals_error (name, type);
6161 return build_cplus_array_type (type, itype);
6164 /* Check that it's OK to declare a function with the indicated TYPE.
6165 SFK indicates the kind of special function (if any) that this
6166 function is. OPTYPE is the type given in a conversion operator
6167 declaration. Returns the actual return type of the function; that
6168 may be different than TYPE if an error occurs, or for certain
6169 special functions. */
6172 check_special_function_return_type (special_function_kind sfk,
6178 case sfk_constructor:
6180 error ("return type specification for constructor invalid");
6182 type = void_type_node;
6185 case sfk_destructor:
6187 error ("return type specification for destructor invalid");
6188 type = void_type_node;
6191 case sfk_conversion:
6192 if (type && !same_type_p (type, optype))
6193 error ("operator `%T' declared to return `%T'", optype, type);
6195 pedwarn ("return type specified for `operator %T'", optype);
6207 /* Given declspecs and a declarator (abstract or otherwise), determine
6208 the name and type of the object declared and construct a DECL node
6211 DECLSPECS is a chain of tree_list nodes whose value fields
6212 are the storage classes and type specifiers.
6214 DECL_CONTEXT says which syntactic context this declaration is in:
6215 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
6216 FUNCDEF for a function definition. Like NORMAL but a few different
6217 error messages in each case. Return value may be zero meaning
6218 this definition is too screwy to try to parse.
6219 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
6220 handle member functions (which have FIELD context).
6221 Return value may be zero meaning this definition is too screwy to
6223 PARM for a parameter declaration (either within a function prototype
6224 or before a function body). Make a PARM_DECL, or return void_type_node.
6225 CATCHPARM for a parameter declaration before a catch clause.
6226 TYPENAME if for a typename (in a cast or sizeof).
6227 Don't make a DECL node; just return the ..._TYPE node.
6228 FIELD for a struct or union field; make a FIELD_DECL.
6229 BITFIELD for a field with specified width.
6230 INITIALIZED is 1 if the decl has an initializer.
6232 ATTRLIST is a pointer to the list of attributes, which may be NULL
6233 if there are none; *ATTRLIST may be modified if attributes from inside
6234 the declarator should be applied to the declaration.
6236 When this function is called, scoping variables (such as
6237 CURRENT_CLASS_TYPE) should reflect the scope in which the
6238 declaration occurs, not the scope in which the new declaration will
6239 be placed. For example, on:
6243 when grokdeclarator is called for `S::f', the CURRENT_CLASS_TYPE
6244 should not be `S'. */
6247 grokdeclarator (const cp_declarator *declarator,
6248 cp_decl_specifier_seq *declspecs,
6249 enum decl_context decl_context,
6253 tree type = NULL_TREE;
6256 int virtualp, explicitp, friendp, inlinep, staticp;
6257 int explicit_int = 0;
6258 int explicit_char = 0;
6259 int defaulted_int = 0;
6260 tree dependant_name = NULL_TREE;
6262 tree typedef_decl = NULL_TREE;
6263 const char *name = NULL;
6264 tree typedef_type = NULL_TREE;
6265 int funcdef_flag = 0;
6266 cp_declarator_kind innermost_code = cdk_error;
6269 /* See the code below that used this. */
6270 tree decl_attr = NULL_TREE;
6273 /* Keep track of what sort of function is being processed
6274 so that we can warn about default return values, or explicit
6275 return values which do not match prescribed defaults. */
6276 special_function_kind sfk = sfk_none;
6278 tree dname = NULL_TREE;
6279 tree ctor_return_type = NULL_TREE;
6280 enum overload_flags flags = NO_SPECIAL;
6281 cp_cv_quals quals = TYPE_UNQUALIFIED;
6282 tree raises = NULL_TREE;
6283 int template_count = 0;
6284 tree returned_attrs = NULL_TREE;
6285 tree parms = NULL_TREE;
6286 const cp_declarator *id_declarator;
6287 /* The unqualified name of the declarator; either an
6288 IDENTIFIER_NODE, BIT_NOT_EXPR, or TEMPLATE_ID_EXPR. */
6289 tree unqualified_id;
6290 /* The class type, if any, in which this entity is located,
6291 or NULL_TREE if none. Note that this value may be different from
6292 the current class type; for example if an attempt is made to declare
6293 "A::f" inside "B", this value will be "A". */
6294 tree ctype = current_class_type;
6295 /* The NAMESPACE_DECL for the namespace in which this entity is
6296 located. If an unqualified name is used to declare the entity,
6297 this value will be NULL_TREE, even if the entity is located at
6299 tree in_namespace = NULL_TREE;
6302 if (decl_context == FUNCDEF)
6303 funcdef_flag = 1, decl_context = NORMAL;
6304 else if (decl_context == MEMFUNCDEF)
6305 funcdef_flag = -1, decl_context = FIELD;
6306 else if (decl_context == BITFIELD)
6307 bitfield = 1, decl_context = FIELD;
6309 /* Look inside a declarator for the name being declared
6310 and get it as a string, for an error message. */
6311 for (id_declarator = declarator;
6313 id_declarator = id_declarator->declarator)
6315 if (id_declarator->kind != cdk_id)
6316 innermost_code = id_declarator->kind;
6318 switch (id_declarator->kind)
6321 if (id_declarator->declarator
6322 && id_declarator->declarator->kind == cdk_id)
6324 sfk = id_declarator->declarator->u.id.sfk;
6325 if (sfk == sfk_destructor)
6332 tree decl = id_declarator->u.id.name;
6335 if (TREE_CODE (decl) == SCOPE_REF)
6337 tree qualifying_scope = TREE_OPERAND (decl, 0);
6339 /* It is valid to write:
6341 class C { void f(); };
6345 The standard is not clear about whether `typedef const C D' is
6346 legal; as of 2002-09-15 the committee is considering
6347 that question. EDG 3.0 allows that syntax.
6348 Therefore, we do as well. */
6349 if (qualifying_scope && TYPE_P (qualifying_scope))
6351 ctype = TYPE_MAIN_VARIANT (qualifying_scope);
6352 if (innermost_code != cdk_function
6353 && current_class_type
6354 && !UNIQUELY_DERIVED_FROM_P (ctype,
6355 current_class_type))
6357 error ("type `%T' is not derived from type `%T'",
6358 ctype, current_class_type);
6361 TREE_OPERAND (decl, 0) = ctype;
6363 else if (TREE_CODE (qualifying_scope) == NAMESPACE_DECL)
6364 in_namespace = qualifying_scope;
6365 decl = TREE_OPERAND (decl, 1);
6367 if (TREE_CODE (decl) == BASELINK)
6368 decl = BASELINK_FUNCTIONS (decl);
6369 if (decl == error_mark_node)
6370 return error_mark_node;
6371 switch (TREE_CODE (decl))
6375 tree type = TREE_OPERAND (decl, 0);
6376 type = constructor_name (type);
6377 name = IDENTIFIER_POINTER (type);
6381 case TEMPLATE_ID_EXPR:
6383 tree fns = TREE_OPERAND (decl, 0);
6386 if (TREE_CODE (dname) == COMPONENT_REF)
6387 dname = TREE_OPERAND (dname, 1);
6388 if (TREE_CODE (dname) != IDENTIFIER_NODE)
6390 my_friendly_assert (is_overloaded_fn (dname),
6392 dname = DECL_NAME (get_first_fn (dname));
6397 case IDENTIFIER_NODE:
6398 if (TREE_CODE (decl) == IDENTIFIER_NODE)
6401 if (C_IS_RESERVED_WORD (dname))
6403 error ("declarator-id missing; using reserved word `%D'",
6405 name = IDENTIFIER_POINTER (dname);
6407 else if (!IDENTIFIER_TYPENAME_P (dname))
6408 name = IDENTIFIER_POINTER (dname);
6411 my_friendly_assert (flags == NO_SPECIAL, 154);
6412 flags = TYPENAME_FLAG;
6413 ctor_return_type = TREE_TYPE (dname);
6414 sfk = sfk_conversion;
6415 if (is_typename_at_global_scope (dname))
6416 name = IDENTIFIER_POINTER (dname);
6418 name = "<invalid operator>";
6423 dname = constructor_name (TREE_TYPE (decl));
6424 name = IDENTIFIER_POINTER (dname);
6445 if (id_declarator->kind == cdk_id)
6449 /* A function definition's declarator must have the form of
6450 a function declarator. */
6452 if (funcdef_flag && innermost_code != cdk_function)
6455 if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
6456 && innermost_code != cdk_function
6457 && ! (ctype && !declspecs->any_specifiers_p))
6459 error ("declaration of `%D' as non-function", dname);
6460 return void_type_node;
6463 /* Anything declared one level down from the top level
6464 must be one of the parameters of a function
6465 (because the body is at least two levels down). */
6467 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
6468 by not allowing C++ class definitions to specify their parameters
6469 with xdecls (must be spec.d in the parmlist).
6471 Since we now wait to push a class scope until we are sure that
6472 we are in a legitimate method context, we must set oldcname
6473 explicitly (since current_class_name is not yet alive).
6475 We also want to avoid calling this a PARM if it is in a namespace. */
6477 if (decl_context == NORMAL && !toplevel_bindings_p ())
6479 struct cp_binding_level *b = current_binding_level;
6480 current_binding_level = b->level_chain;
6481 if (current_binding_level != 0 && toplevel_bindings_p ())
6482 decl_context = PARM;
6483 current_binding_level = b;
6487 name = decl_context == PARM ? "parameter" : "type name";
6489 /* If there were multiple types specified in the decl-specifier-seq,
6490 issue an error message. */
6491 if (declspecs->multiple_types_p)
6492 error ("two or more data types in declaration of `%s'", name);
6493 /* Extract the basic type from the decl-specifier-seq. */
6494 type = declspecs->type;
6495 if (type == error_mark_node)
6497 /* If the entire declaration is itself tagged as deprecated then
6498 suppress reports of deprecated items. */
6499 if (type && TREE_DEPRECATED (type)
6500 && deprecated_state != DEPRECATED_SUPPRESS)
6501 warn_deprecated_use (type);
6502 if (type && TREE_CODE (type) == TYPE_DECL)
6504 typedef_decl = type;
6505 type = TREE_TYPE (typedef_decl);
6507 /* No type at all: default to `int', and set DEFAULTED_INT
6508 because it was not a user-defined typedef. */
6509 if (type == NULL_TREE
6510 && (declspecs->specs[(int)ds_signed]
6511 || declspecs->specs[(int)ds_unsigned]
6512 || declspecs->specs[(int)ds_long]
6513 || declspecs->specs[(int)ds_short]))
6515 /* These imply 'int'. */
6516 type = integer_type_node;
6520 explicit_int = declspecs->explicit_int_p;
6521 explicit_char = declspecs->explicit_char_p;
6523 /* Check for repeated decl-specifiers. */
6524 for (ds = ds_first; ds != ds_last; ++ds)
6526 unsigned count = declspecs->specs[(int)ds];
6529 /* The "long" specifier is a special case because of
6534 error ("`long long long' is too long for GCC");
6535 else if (pedantic && !in_system_header && warn_long_long)
6536 pedwarn ("ISO C++ does not support `long long'");
6540 else if (declspecs->specs[(int)ds] > 1)
6542 static const char *const decl_spec_names[] = {
6558 error ("duplicate `%s'", decl_spec_names[(int)ds]);
6563 /* See the code below that used this. */
6565 decl_attr = DECL_ATTRIBUTES (typedef_decl);
6567 typedef_type = type;
6570 if (sfk != sfk_none)
6571 type = check_special_function_return_type (sfk, type,
6573 else if (type == NULL_TREE)
6579 /* We handle `main' specially here, because 'main () { }' is so
6580 common. With no options, it is allowed. With -Wreturn-type,
6581 it is a warning. It is only an error with -pedantic-errors. */
6582 is_main = (funcdef_flag
6583 && dname && MAIN_NAME_P (dname)
6584 && ctype == NULL_TREE
6585 && in_namespace == NULL_TREE
6586 && current_namespace == global_namespace);
6588 if (in_system_header || flag_ms_extensions)
6589 /* Allow it, sigh. */;
6590 else if (pedantic || ! is_main)
6591 pedwarn ("ISO C++ forbids declaration of `%s' with no type",
6593 else if (warn_return_type)
6594 warning ("ISO C++ forbids declaration of `%s' with no type",
6597 type = integer_type_node;
6602 /* Now process the modifiers that were specified
6603 and check for invalid combinations. */
6605 /* Long double is a special combination. */
6606 if (declspecs->specs[(int)ds_long]
6607 && TYPE_MAIN_VARIANT (type) == double_type_node)
6609 declspecs->specs[(int)ds_long] = 0;
6610 type = build_qualified_type (long_double_type_node,
6611 cp_type_quals (type));
6614 /* Check all other uses of type modifiers. */
6616 if (declspecs->specs[(int)ds_unsigned]
6617 || declspecs->specs[(int)ds_signed]
6618 || declspecs->specs[(int)ds_long]
6619 || declspecs->specs[(int)ds_short])
6623 if (TREE_CODE (type) == REAL_TYPE)
6624 error ("short, signed or unsigned invalid for `%s'", name);
6625 else if (TREE_CODE (type) != INTEGER_TYPE)
6626 error ("long, short, signed or unsigned invalid for `%s'", name);
6627 else if (declspecs->specs[(int)ds_long]
6628 && declspecs->specs[(int)ds_short])
6629 error ("long and short specified together for `%s'", name);
6630 else if ((declspecs->specs[(int)ds_long]
6631 || declspecs->specs[(int)ds_short])
6633 error ("long or short specified with char for `%s'", name);
6634 else if ((declspecs->specs[(int)ds_long]
6635 || declspecs->specs[(int)ds_short])
6636 && TREE_CODE (type) == REAL_TYPE)
6637 error ("long or short specified with floating type for `%s'", name);
6638 else if (declspecs->specs[(int)ds_signed]
6639 && declspecs->specs[(int)ds_unsigned])
6640 error ("signed and unsigned given together for `%s'", name);
6644 if (!explicit_int && !defaulted_int && !explicit_char && pedantic)
6646 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
6648 if (flag_pedantic_errors)
6653 /* Discard the type modifiers if they are invalid. */
6656 declspecs->specs[(int)ds_unsigned] = 0;
6657 declspecs->specs[(int)ds_signed] = 0;
6658 declspecs->specs[(int)ds_long] = 0;
6659 declspecs->specs[(int)ds_short] = 0;
6664 if (declspecs->specs[(int)ds_complex]
6665 && TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE)
6667 error ("complex invalid for `%s'", name);
6668 declspecs->specs[(int)ds_complex] = 0;
6671 /* Decide whether an integer type is signed or not.
6672 Optionally treat bitfields as signed by default. */
6673 if (declspecs->specs[(int)ds_unsigned]
6676 It is implementation-defined whether a plain (neither
6677 explicitly signed or unsigned) char, short, int, or long
6678 bit-field is signed or unsigned.
6680 Naturally, we extend this to long long as well. Note that
6681 this does not include wchar_t. */
6682 || (bitfield && !flag_signed_bitfields
6683 && !declspecs->specs[(int)ds_signed]
6684 /* A typedef for plain `int' without `signed' can be
6685 controlled just like plain `int', but a typedef for
6686 `signed int' cannot be so controlled. */
6688 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl))
6689 && (TREE_CODE (type) == INTEGER_TYPE
6690 || TREE_CODE (type) == CHAR_TYPE)
6691 && !same_type_p (TYPE_MAIN_VARIANT (type), wchar_type_node)))
6694 type = long_long_unsigned_type_node;
6695 else if (declspecs->specs[(int)ds_long])
6696 type = long_unsigned_type_node;
6697 else if (declspecs->specs[(int)ds_short])
6698 type = short_unsigned_type_node;
6699 else if (type == char_type_node)
6700 type = unsigned_char_type_node;
6701 else if (typedef_decl)
6702 type = c_common_unsigned_type (type);
6704 type = unsigned_type_node;
6706 else if (declspecs->specs[(int)ds_signed]
6707 && type == char_type_node)
6708 type = signed_char_type_node;
6710 type = long_long_integer_type_node;
6711 else if (declspecs->specs[(int)ds_long])
6712 type = long_integer_type_node;
6713 else if (declspecs->specs[(int)ds_short])
6714 type = short_integer_type_node;
6716 if (declspecs->specs[(int)ds_complex])
6718 /* If we just have "complex", it is equivalent to
6719 "complex double", but if any modifiers at all are specified it is
6720 the complex form of TYPE. E.g, "complex short" is
6721 "complex short int". */
6723 if (defaulted_int && ! longlong
6724 && ! (declspecs->specs[(int)ds_long]
6725 || declspecs->specs[(int)ds_short]
6726 || declspecs->specs[(int)ds_signed]
6727 || declspecs->specs[(int)ds_unsigned]))
6728 type = complex_double_type_node;
6729 else if (type == integer_type_node)
6730 type = complex_integer_type_node;
6731 else if (type == float_type_node)
6732 type = complex_float_type_node;
6733 else if (type == double_type_node)
6734 type = complex_double_type_node;
6735 else if (type == long_double_type_node)
6736 type = complex_long_double_type_node;
6738 type = build_complex_type (type);
6741 type_quals = TYPE_UNQUALIFIED;
6742 if (declspecs->specs[(int)ds_const])
6743 type_quals |= TYPE_QUAL_CONST;
6744 if (declspecs->specs[(int)ds_volatile])
6745 type_quals |= TYPE_QUAL_VOLATILE;
6746 if (declspecs->specs[(int)ds_restrict])
6747 type_quals |= TYPE_QUAL_RESTRICT;
6748 if (sfk == sfk_conversion && type_quals != TYPE_UNQUALIFIED)
6749 error ("qualifiers are not allowed on declaration of `operator %T'",
6752 type_quals |= cp_type_quals (type);
6753 type = cp_build_qualified_type_real
6754 (type, type_quals, ((typedef_decl && !DECL_ARTIFICIAL (typedef_decl)
6755 ? tf_ignore_bad_quals : 0) | tf_error | tf_warning));
6756 /* We might have ignored or rejected some of the qualifiers. */
6757 type_quals = cp_type_quals (type);
6760 inlinep = !! declspecs->specs[(int)ds_inline];
6761 virtualp = !! declspecs->specs[(int)ds_virtual];
6762 explicitp = !! declspecs->specs[(int)ds_explicit];
6764 if (declspecs->storage_class == sc_static)
6765 staticp = 1 + (decl_context == FIELD);
6767 if (virtualp && staticp == 2)
6769 error ("member `%D' cannot be declared both virtual and static",
6773 friendp = !! declspecs->specs[(int)ds_friend];
6775 if (dependant_name && !friendp)
6777 error ("`%T::%D' is not a valid declarator", ctype, dependant_name);
6778 return void_type_node;
6781 /* Issue errors about use of storage classes for parameters. */
6782 if (decl_context == PARM)
6784 if (declspecs->specs[(int)ds_typedef])
6785 error ("typedef declaration invalid in parameter declaration");
6786 else if (declspecs->storage_class == sc_static
6787 || declspecs->storage_class == sc_extern
6788 || declspecs->specs[(int)ds_thread])
6789 error ("storage class specifiers invalid in parameter declarations");
6792 /* Give error if `virtual' is used outside of class declaration. */
6794 && (current_class_name == NULL_TREE || decl_context != FIELD))
6796 error ("virtual outside class declaration");
6800 /* Static anonymous unions are dealt with here. */
6801 if (staticp && decl_context == TYPENAME
6803 && ANON_AGGR_TYPE_P (declspecs->type))
6804 decl_context = FIELD;
6806 /* Warn about storage classes that are invalid for certain
6807 kinds of declarations (parameters, typenames, etc.). */
6808 if (declspecs->multiple_storage_classes_p)
6809 error ("multiple storage classes in declaration of `%s'", name);
6810 else if (declspecs->specs[(int)ds_thread]
6811 && ((declspecs->storage_class
6812 && declspecs->storage_class != sc_extern
6813 && declspecs->storage_class != sc_static)
6814 || declspecs->specs[(int)ds_typedef]))
6816 error ("multiple storage classes in declaration of `%s'", name);
6817 declspecs->specs[(int)ds_thread] = 0;
6819 else if (decl_context != NORMAL
6820 && ((declspecs->storage_class != sc_none
6821 && declspecs->storage_class != sc_mutable)
6822 || declspecs->specs[(int)ds_thread]))
6824 if ((decl_context == PARM || decl_context == CATCHPARM)
6825 && (declspecs->storage_class == sc_register
6826 || declspecs->storage_class == sc_auto))
6828 else if (declspecs->specs[(int)ds_typedef])
6830 else if (decl_context == FIELD
6831 /* C++ allows static class elements. */
6832 && declspecs->storage_class == sc_static)
6833 /* C++ also allows inlines and signed and unsigned elements,
6834 but in those cases we don't come in here. */
6838 if (decl_context == FIELD)
6840 tree tmp = NULL_TREE;
6845 /* Avoid trying to get an operand off an identifier node. */
6846 if (declarator->kind != cdk_id)
6847 tmp = declarator->declarator->u.id.name;
6849 tmp = declarator->u.id.name;
6850 op = IDENTIFIER_OPNAME_P (tmp);
6851 if (IDENTIFIER_TYPENAME_P (tmp))
6853 if (is_typename_at_global_scope (tmp))
6854 name = IDENTIFIER_POINTER (tmp);
6856 name = "<invalid operator>";
6859 error ("storage class specified for %s `%s'",
6860 op ? "member operator" : "field",
6865 if (decl_context == PARM || decl_context == CATCHPARM)
6866 error ("storage class specified for parameter `%s'", name);
6868 error ("storage class specified for typename");
6870 if (declspecs->storage_class == sc_register
6871 || declspecs->storage_class == sc_auto
6872 || declspecs->storage_class == sc_extern
6873 || declspecs->specs[(int)ds_thread])
6874 declspecs->storage_class = sc_none;
6877 else if (declspecs->storage_class == sc_extern && initialized
6880 if (toplevel_bindings_p ())
6882 /* It's common practice (and completely valid) to have a const
6883 be initialized and declared extern. */
6884 if (!(type_quals & TYPE_QUAL_CONST))
6885 warning ("`%s' initialized and declared `extern'", name);
6888 error ("`%s' has both `extern' and initializer", name);
6890 else if (declspecs->storage_class == sc_extern && funcdef_flag
6891 && ! toplevel_bindings_p ())
6892 error ("nested function `%s' declared `extern'", name);
6893 else if (toplevel_bindings_p ())
6895 if (declspecs->storage_class == sc_auto)
6896 error ("top-level declaration of `%s' specifies `auto'", name);
6898 else if (declspecs->specs[(int)ds_thread]
6899 && declspecs->storage_class != sc_extern
6900 && declspecs->storage_class != sc_static)
6902 error ("function-scope `%s' implicitly auto and declared `__thread'",
6904 declspecs->specs[(int)ds_thread] = 0;
6907 if (declspecs->storage_class && friendp)
6908 error ("storage class specifiers invalid in friend function declarations");
6911 unqualified_id = NULL_TREE;
6914 unqualified_id = id_declarator->u.id.name;
6915 if (TREE_CODE (unqualified_id) == SCOPE_REF)
6916 unqualified_id = TREE_OPERAND (unqualified_id, 1);
6917 if (TREE_CODE (unqualified_id) == BASELINK)
6918 unqualified_id = BASELINK_FUNCTIONS (unqualified_id);
6919 switch (TREE_CODE (unqualified_id))
6923 = constructor_name (TREE_OPERAND (unqualified_id, 0));
6928 = constructor_name (TREE_TYPE (unqualified_id));
6931 case IDENTIFIER_NODE:
6932 case TEMPLATE_ID_EXPR:
6940 /* Determine the type of the entity declared by recurring on the
6943 declarator && declarator->kind != cdk_id;
6944 declarator = declarator->declarator)
6946 const cp_declarator *inner_declarator;
6949 if (type == error_mark_node)
6950 return error_mark_node;
6952 inner_declarator = declarator->declarator;
6954 attrs = declarator->attributes;
6960 if (declarator == NULL || declarator->kind == cdk_id)
6961 attr_flags |= (int) ATTR_FLAG_DECL_NEXT;
6962 if (declarator->kind == cdk_function)
6963 attr_flags |= (int) ATTR_FLAG_FUNCTION_NEXT;
6964 if (declarator->kind == cdk_array)
6965 attr_flags |= (int) ATTR_FLAG_ARRAY_NEXT;
6966 returned_attrs = decl_attributes (&type,
6967 chainon (returned_attrs, attrs),
6971 switch (declarator->kind)
6974 type = create_array_type_for_decl (dname, type,
6975 declarator->u.array.bounds);
6976 if (inner_declarator
6977 && (inner_declarator->kind == cdk_pointer
6978 || inner_declarator->kind == cdk_reference
6979 || inner_declarator->kind == cdk_ptrmem))
6980 /* We can never complete an array type which is the
6981 target of a pointer, so go ahead and lay it out. */
6990 /* Declaring a function type.
6991 Make sure we have a valid type for the function to return. */
6993 /* We now know that the TYPE_QUALS don't apply to the
6994 decl, but to its return type. */
6995 type_quals = TYPE_UNQUALIFIED;
6997 /* Warn about some types functions can't return. */
6999 if (TREE_CODE (type) == FUNCTION_TYPE)
7001 error ("`%s' declared as function returning a function", name);
7002 type = integer_type_node;
7004 if (TREE_CODE (type) == ARRAY_TYPE)
7006 error ("`%s' declared as function returning an array", name);
7007 type = integer_type_node;
7010 /* Pick up type qualifiers which should be applied to `this'. */
7011 quals = declarator->u.function.qualifiers;
7013 /* Pick up the exception specifications. */
7014 raises = declarator->u.function.exception_specification;
7016 /* Say it's a definition only for the CALL_EXPR
7017 closest to the identifier. */
7018 funcdecl_p = inner_declarator && inner_declarator->kind == cdk_id;
7020 if (ctype == NULL_TREE
7021 && decl_context == FIELD
7023 && (friendp == 0 || dname == current_class_name))
7024 ctype = current_class_type;
7026 if (ctype && sfk == sfk_conversion)
7027 TYPE_HAS_CONVERSION (ctype) = 1;
7028 if (ctype && (sfk == sfk_constructor
7029 || sfk == sfk_destructor))
7031 /* We are within a class's scope. If our declarator name
7032 is the same as the class name, and we are defining
7033 a function, then it is a constructor/destructor, and
7034 therefore returns a void type. */
7036 if (flags == DTOR_FLAG)
7038 /* ISO C++ 12.4/2. A destructor may not be
7039 declared const or volatile. A destructor may
7042 error ("destructor cannot be static member function");
7045 error ("destructors may not be cv-qualified");
7046 quals = TYPE_UNQUALIFIED;
7048 if (decl_context == FIELD)
7050 if (! member_function_or_else (ctype,
7053 return void_type_node;
7056 else /* It's a constructor. */
7060 /* ISO C++ 12.1. A constructor may not be
7061 declared const or volatile. A constructor may
7062 not be virtual. A constructor may not be
7065 error ("constructor cannot be static member function");
7068 pedwarn ("constructors cannot be declared virtual");
7073 error ("constructors may not be cv-qualified");
7074 quals = TYPE_UNQUALIFIED;
7076 if (decl_context == FIELD)
7078 if (! member_function_or_else (ctype,
7081 return void_type_node;
7082 TYPE_HAS_CONSTRUCTOR (ctype) = 1;
7083 if (sfk != sfk_constructor)
7087 if (decl_context == FIELD)
7093 error ("can't initialize friend function `%s'", name);
7096 /* Cannot be both friend and virtual. */
7097 error ("virtual functions cannot be friends");
7100 if (decl_context == NORMAL)
7101 error ("friend declaration not in class definition");
7102 if (current_function_decl && funcdef_flag)
7103 error ("can't define friend function `%s' in a local class definition",
7107 arg_types = grokparms (declarator->u.function.parameters,
7110 if (inner_declarator
7111 && inner_declarator->kind == cdk_id
7112 && inner_declarator->u.id.sfk == sfk_destructor
7113 && arg_types != void_list_node)
7115 error ("destructors may not have parameters");
7116 arg_types = void_list_node;
7120 type = build_function_type (type, arg_types);
7127 /* Filter out pointers-to-references and references-to-references.
7128 We can get these if a TYPE_DECL is used. */
7130 if (TREE_CODE (type) == REFERENCE_TYPE)
7132 error (declarator->kind == cdk_reference
7133 ? "cannot declare reference to `%#T'"
7134 : "cannot declare pointer to `%#T'", type);
7135 type = TREE_TYPE (type);
7137 else if (VOID_TYPE_P (type))
7139 if (declarator->kind == cdk_reference)
7140 error ("cannot declare reference to `%#T'", type);
7141 else if (declarator->kind == cdk_ptrmem)
7142 error ("cannot declare pointer to `%#T' member", type);
7145 /* We now know that the TYPE_QUALS don't apply to the decl,
7146 but to the target of the pointer. */
7147 type_quals = TYPE_UNQUALIFIED;
7149 if (declarator->kind == cdk_ptrmem
7150 && (TREE_CODE (type) == FUNCTION_TYPE
7151 || (quals && TREE_CODE (type) == METHOD_TYPE)))
7153 tree dummy = build_decl (TYPE_DECL, NULL_TREE, type);
7154 grok_method_quals (declarator->u.pointer.class_type,
7156 type = TREE_TYPE (dummy);
7157 quals = TYPE_UNQUALIFIED;
7160 if (declarator->kind == cdk_reference)
7162 if (!VOID_TYPE_P (type))
7163 type = build_reference_type (type);
7165 else if (TREE_CODE (type) == METHOD_TYPE)
7166 type = build_ptrmemfunc_type (build_pointer_type (type));
7167 else if (declarator->kind == cdk_ptrmem)
7168 type = build_ptrmem_type (declarator->u.pointer.class_type,
7171 type = build_pointer_type (type);
7173 /* Process a list of type modifier keywords (such as
7174 const or volatile) that were given inside the `*' or `&'. */
7176 if (declarator->u.pointer.qualifiers)
7179 = cp_build_qualified_type (type,
7180 declarator->u.pointer.qualifiers);
7181 type_quals = cp_type_quals (type);
7194 if (unqualified_id && TREE_CODE (unqualified_id) == TEMPLATE_ID_EXPR
7195 && TREE_CODE (type) != FUNCTION_TYPE
7196 && TREE_CODE (type) != METHOD_TYPE)
7198 error ("template-id `%D' used as a declarator",
7200 unqualified_id = dname;
7203 /* If DECLARATOR is non-NULL, we know it is a cdk_id declarator;
7204 otherwise, we would not have exited the loop above. */
7206 && TREE_CODE (declarator->u.id.name) == SCOPE_REF
7207 /* If the qualifying scope was invalid, it will have been set to
7209 && TREE_OPERAND (declarator->u.id.name, 0)
7210 && TYPE_P (TREE_OPERAND (declarator->u.id.name, 0)))
7214 ctype = TREE_OPERAND (declarator->u.id.name, 0);
7216 ctype = TYPE_MAIN_VARIANT (ctype);
7218 while (t != NULL_TREE && CLASS_TYPE_P (t))
7220 /* You're supposed to have one `template <...>' for every
7221 template class, but you don't need one for a full
7222 specialization. For example:
7224 template <class T> struct S{};
7225 template <> struct S<int> { void f(); };
7226 void S<int>::f () {}
7228 is correct; there shouldn't be a `template <>' for the
7229 definition of `S<int>::f'. */
7230 if (CLASSTYPE_TEMPLATE_INFO (t)
7231 && (CLASSTYPE_TEMPLATE_INSTANTIATION (t)
7232 || uses_template_parms (CLASSTYPE_TI_ARGS (t)))
7233 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t)))
7234 template_count += 1;
7236 t = TYPE_MAIN_DECL (t);
7237 t = DECL_CONTEXT (t);
7240 if (ctype == current_class_type)
7246 Is this ill-formed? */
7249 pedwarn ("extra qualification `%T::' on member `%s' ignored",
7252 else if (TREE_CODE (type) == FUNCTION_TYPE)
7254 tree sname = TREE_OPERAND (declarator->u.id.name, 1);
7256 if (TREE_CODE (sname) == IDENTIFIER_NODE
7257 && NEW_DELETE_OPNAME_P (sname))
7258 /* Overloaded operator new and operator delete
7259 are always static functions. */
7261 else if (current_class_type == NULL_TREE || friendp)
7263 = build_method_type_directly (ctype,
7265 TYPE_ARG_TYPES (type));
7268 error ("cannot declare member function `%T::%s' within `%T'",
7269 ctype, name, current_class_type);
7270 return error_mark_node;
7273 else if (declspecs->specs[(int)ds_typedef]
7274 || COMPLETE_TYPE_P (complete_type (ctype)))
7276 /* Have to move this code elsewhere in this function.
7277 this code is used for i.e., typedef int A::M; M *pm;
7279 It is? How? jason 10/2/94 */
7281 if (current_class_type)
7283 error ("cannot declare member `%T::%s' within `%T'",
7284 ctype, name, current_class_type);
7285 return void_type_node;
7290 cxx_incomplete_type_error (NULL_TREE, ctype);
7291 return error_mark_node;
7298 *attrlist = chainon (returned_attrs, *attrlist);
7300 attrlist = &returned_attrs;
7303 /* Now TYPE has the actual type. */
7305 /* Did array size calculations overflow? */
7307 if (TREE_CODE (type) == ARRAY_TYPE
7308 && COMPLETE_TYPE_P (type)
7309 && TREE_OVERFLOW (TYPE_SIZE (type)))
7311 error ("size of array `%s' is too large", name);
7312 /* If we proceed with the array type as it is, we'll eventually
7313 crash in tree_low_cst(). */
7314 type = error_mark_node;
7317 if ((decl_context == FIELD || decl_context == PARM)
7318 && !processing_template_decl
7319 && variably_modified_type_p (type, NULL_TREE))
7321 if (decl_context == FIELD)
7322 error ("data member may not have variably modified type `%T'", type);
7324 error ("parameter may not have variably modified type `%T'", type);
7325 type = error_mark_node;
7328 if (explicitp == 1 || (explicitp && friendp))
7330 /* [dcl.fct.spec] The explicit specifier shall only be used in
7331 declarations of constructors within a class definition. */
7332 error ("only declarations of constructors can be `explicit'");
7336 if (declspecs->storage_class == sc_mutable)
7338 if (decl_context != FIELD || friendp)
7340 error ("non-member `%s' cannot be declared `mutable'", name);
7341 declspecs->storage_class = sc_none;
7343 else if (decl_context == TYPENAME || declspecs->specs[(int)ds_typedef])
7345 error ("non-object member `%s' cannot be declared `mutable'", name);
7346 declspecs->storage_class = sc_none;
7348 else if (TREE_CODE (type) == FUNCTION_TYPE
7349 || TREE_CODE (type) == METHOD_TYPE)
7351 error ("function `%s' cannot be declared `mutable'", name);
7352 declspecs->storage_class = sc_none;
7356 error ("static `%s' cannot be declared `mutable'", name);
7357 declspecs->storage_class = sc_none;
7359 else if (type_quals & TYPE_QUAL_CONST)
7361 error ("const `%s' cannot be declared `mutable'", name);
7362 declspecs->storage_class = sc_none;
7366 /* If this is declaring a typedef name, return a TYPE_DECL. */
7367 if (declspecs->specs[(int)ds_typedef] && decl_context != TYPENAME)
7371 /* Note that the grammar rejects storage classes
7372 in typenames, fields or parameters. */
7373 if (current_lang_name == lang_name_java)
7374 TYPE_FOR_JAVA (type) = 1;
7376 if (decl_context == FIELD)
7378 if (constructor_name_p (unqualified_id, current_class_type))
7379 pedwarn ("ISO C++ forbids nested type `%D' with same name as enclosing class",
7381 decl = build_lang_decl (TYPE_DECL, unqualified_id, type);
7385 decl = build_decl (TYPE_DECL, unqualified_id, type);
7386 if (in_namespace || ctype)
7387 error ("%Jtypedef name may not be a nested-name-specifier", decl);
7388 if (!current_function_decl)
7389 DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
7392 /* If the user declares "typedef struct {...} foo" then the
7393 struct will have an anonymous name. Fill that name in now.
7394 Nothing can refer to it, so nothing needs know about the name
7396 if (type != error_mark_node
7399 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
7400 && TYPE_ANONYMOUS_P (type)
7401 /* Don't do this if there are attributes. */
7402 && (!attrlist || !*attrlist)
7403 && cp_type_quals (type) == TYPE_UNQUALIFIED)
7405 tree oldname = TYPE_NAME (type);
7408 /* Replace the anonymous name with the real name everywhere. */
7409 lookup_tag_reverse (type, unqualified_id);
7410 for (t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t))
7411 if (TYPE_NAME (t) == oldname)
7412 TYPE_NAME (t) = decl;
7414 if (TYPE_LANG_SPECIFIC (type))
7415 TYPE_WAS_ANONYMOUS (type) = 1;
7417 /* If this is a typedef within a template class, the nested
7418 type is a (non-primary) template. The name for the
7419 template needs updating as well. */
7420 if (TYPE_LANG_SPECIFIC (type) && CLASSTYPE_TEMPLATE_INFO (type))
7421 DECL_NAME (CLASSTYPE_TI_TEMPLATE (type))
7422 = TYPE_IDENTIFIER (type);
7424 /* FIXME remangle member functions; member functions of a
7425 type with external linkage have external linkage. */
7430 if (ctype == NULL_TREE)
7432 if (TREE_CODE (type) != METHOD_TYPE)
7433 error ("%Jinvalid type qualifier for non-member function type",
7436 ctype = TYPE_METHOD_BASETYPE (type);
7438 if (ctype != NULL_TREE)
7439 grok_method_quals (ctype, decl, quals);
7442 if (declspecs->specs[(int)ds_signed]
7443 || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
7444 C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
7446 bad_specifiers (decl, "type", virtualp, quals != TYPE_UNQUALIFIED,
7447 inlinep, friendp, raises != NULL_TREE);
7452 /* Detect the case of an array type of unspecified size
7453 which came, as such, direct from a typedef name.
7454 We must copy the type, so that the array's domain can be
7455 individually set by the object's initializer. */
7457 if (type && typedef_type
7458 && TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type)
7459 && TYPE_MAIN_VARIANT (type) == TYPE_MAIN_VARIANT (typedef_type))
7460 type = build_cplus_array_type (TREE_TYPE (type), NULL_TREE);
7462 /* Detect where we're using a typedef of function type to declare a
7463 function. PARMS will not be set, so we must create it now. */
7465 if (type == typedef_type && TREE_CODE (type) == FUNCTION_TYPE)
7467 tree decls = NULL_TREE;
7470 for (args = TYPE_ARG_TYPES (type); args; args = TREE_CHAIN (args))
7472 tree decl = cp_build_parm_decl (NULL_TREE, TREE_VALUE (args));
7474 TREE_CHAIN (decl) = decls;
7478 parms = nreverse (decls);
7481 /* If this is a type name (such as, in a cast or sizeof),
7482 compute the type and return it now. */
7484 if (decl_context == TYPENAME)
7486 /* Note that the grammar rejects storage classes
7487 in typenames, fields or parameters. */
7488 if (type_quals != TYPE_UNQUALIFIED)
7489 type_quals = TYPE_UNQUALIFIED;
7491 /* Special case: "friend class foo" looks like a TYPENAME context. */
7494 if (type_quals != TYPE_UNQUALIFIED)
7496 error ("type qualifiers specified for friend class declaration");
7497 type_quals = TYPE_UNQUALIFIED;
7501 error ("`inline' specified for friend class declaration");
7507 /* Don't allow friend declaration without a class-key. */
7508 if (TREE_CODE (type) == TEMPLATE_TYPE_PARM)
7509 pedwarn ("template parameters cannot be friends");
7510 else if (TREE_CODE (type) == TYPENAME_TYPE)
7511 pedwarn ("friend declaration requires class-key, "
7512 "i.e. `friend class %T::%D'",
7513 TYPE_CONTEXT (type), TYPENAME_TYPE_FULLNAME (type));
7515 pedwarn ("friend declaration requires class-key, "
7516 "i.e. `friend %#T'",
7520 /* Only try to do this stuff if we didn't already give up. */
7521 if (type != integer_type_node)
7523 /* A friendly class? */
7524 if (current_class_type)
7525 make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type),
7528 error ("trying to make class `%T' a friend of global scope",
7531 type = void_type_node;
7536 if (ctype == NULL_TREE)
7538 if (TREE_CODE (type) != METHOD_TYPE)
7539 error ("invalid qualifiers on non-member function type");
7541 ctype = TYPE_METHOD_BASETYPE (type);
7545 tree dummy = build_decl (TYPE_DECL, unqualified_id, type);
7546 grok_method_quals (ctype, dummy, quals);
7547 type = TREE_TYPE (dummy);
7553 else if (unqualified_id == NULL_TREE && decl_context != PARM
7554 && decl_context != CATCHPARM
7555 && TREE_CODE (type) != UNION_TYPE
7558 error ("abstract declarator `%T' used as declaration", type);
7559 unqualified_id = make_anon_name ();
7562 /* `void' at top level (not within pointer)
7563 is allowed only in typedefs or type names.
7564 We don't complain about parms either, but that is because
7565 a better error message can be made later. */
7567 if (TREE_CODE (type) == VOID_TYPE && decl_context != PARM)
7569 if (! unqualified_id)
7570 error ("unnamed variable or field declared void");
7571 else if (TREE_CODE (unqualified_id) == IDENTIFIER_NODE)
7573 if (IDENTIFIER_OPNAME_P (unqualified_id))
7576 error ("variable or field `%s' declared void", name);
7579 error ("variable or field declared void");
7580 type = integer_type_node;
7583 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
7584 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
7586 if (decl_context == PARM || decl_context == CATCHPARM)
7588 if (ctype || in_namespace)
7589 error ("cannot use `::' in parameter declaration");
7591 /* A parameter declared as an array of T is really a pointer to T.
7592 One declared as a function is really a pointer to a function.
7593 One declared as a member is really a pointer to member. */
7595 if (TREE_CODE (type) == ARRAY_TYPE)
7597 /* Transfer const-ness of array into that of type pointed to. */
7598 type = build_pointer_type (TREE_TYPE (type));
7599 type_quals = TYPE_UNQUALIFIED;
7601 else if (TREE_CODE (type) == FUNCTION_TYPE)
7602 type = build_pointer_type (type);
7608 if (decl_context == PARM)
7610 decl = cp_build_parm_decl (unqualified_id, type);
7612 bad_specifiers (decl, "parameter", virtualp, quals != TYPE_UNQUALIFIED,
7613 inlinep, friendp, raises != NULL_TREE);
7615 else if (decl_context == FIELD)
7617 /* The C99 flexible array extension. */
7618 if (!staticp && TREE_CODE (type) == ARRAY_TYPE
7619 && TYPE_DOMAIN (type) == NULL_TREE)
7621 tree itype = compute_array_index_type (dname, integer_zero_node);
7622 type = build_cplus_array_type (TREE_TYPE (type), itype);
7625 if (type == error_mark_node)
7627 /* Happens when declaring arrays of sizes which
7628 are error_mark_node, for example. */
7631 else if (in_namespace && !friendp)
7633 /* Something like struct S { int N::j; }; */
7634 error ("invalid use of `::'");
7637 else if (TREE_CODE (type) == FUNCTION_TYPE)
7640 tree function_context;
7642 /* We catch the others as conflicts with the builtin
7644 if (friendp && unqualified_id == ridpointers[(int) RID_SIGNED])
7646 error ("function `%D' cannot be declared friend",
7653 if (ctype == NULL_TREE)
7654 ctype = current_class_type;
7656 if (ctype == NULL_TREE)
7658 error ("can't make `%D' into a method -- not in a class",
7660 return void_type_node;
7663 /* ``A union may [ ... ] not [ have ] virtual functions.''
7665 if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
7667 error ("function `%D' declared virtual inside a union",
7669 return void_type_node;
7672 if (NEW_DELETE_OPNAME_P (unqualified_id))
7676 error ("`%D' cannot be declared virtual, since it is always static",
7681 else if (staticp < 2)
7682 type = build_method_type_directly (ctype,
7684 TYPE_ARG_TYPES (type));
7687 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
7688 function_context = (ctype != NULL_TREE) ?
7689 decl_function_context (TYPE_MAIN_DECL (ctype)) : NULL_TREE;
7690 publicp = (! friendp || ! staticp)
7691 && function_context == NULL_TREE;
7692 decl = grokfndecl (ctype, type,
7693 TREE_CODE (unqualified_id) != TEMPLATE_ID_EXPR
7694 ? unqualified_id : dname,
7697 virtualp, flags, quals, raises,
7698 friendp ? -1 : 0, friendp, publicp, inlinep,
7699 funcdef_flag, template_count, in_namespace);
7700 if (decl == NULL_TREE)
7703 /* This clobbers the attrs stored in `decl' from `attrlist'. */
7704 /* The decl and setting of decl_attr is also turned off. */
7705 decl = build_decl_attribute_variant (decl, decl_attr);
7708 /* [class.conv.ctor]
7710 A constructor declared without the function-specifier
7711 explicit that can be called with a single parameter
7712 specifies a conversion from the type of its first
7713 parameter to the type of its class. Such a constructor
7714 is called a converting constructor. */
7716 DECL_NONCONVERTING_P (decl) = 1;
7717 else if (DECL_CONSTRUCTOR_P (decl))
7719 /* The constructor can be called with exactly one
7720 parameter if there is at least one parameter, and
7721 any subsequent parameters have default arguments.
7722 Ignore any compiler-added parms. */
7723 tree arg_types = FUNCTION_FIRST_USER_PARMTYPE (decl);
7725 if (arg_types == void_list_node
7727 && TREE_CHAIN (arg_types)
7728 && TREE_CHAIN (arg_types) != void_list_node
7729 && !TREE_PURPOSE (TREE_CHAIN (arg_types))))
7730 DECL_NONCONVERTING_P (decl) = 1;
7733 else if (TREE_CODE (type) == METHOD_TYPE)
7735 /* We only get here for friend declarations of
7736 members of other classes. */
7737 /* All method decls are public, so tell grokfndecl to set
7738 TREE_PUBLIC, also. */
7739 decl = grokfndecl (ctype, type,
7740 TREE_CODE (unqualified_id) != TEMPLATE_ID_EXPR
7741 ? unqualified_id : dname,
7744 virtualp, flags, quals, raises,
7745 friendp ? -1 : 0, friendp, 1, 0, funcdef_flag,
7746 template_count, in_namespace);
7747 if (decl == NULL_TREE)
7750 else if (!staticp && !dependent_type_p (type)
7751 && !COMPLETE_TYPE_P (complete_type (type))
7752 && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
7755 error ("field `%D' has incomplete type", unqualified_id);
7757 error ("name `%T' has incomplete type", type);
7759 /* If we're instantiating a template, tell them which
7760 instantiation made the field's type be incomplete. */
7761 if (current_class_type
7762 && TYPE_NAME (current_class_type)
7763 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type))
7765 && declspecs->type == type)
7766 error (" in instantiation of template `%T'",
7767 current_class_type);
7769 type = error_mark_node;
7776 error ("`%E' is neither function nor member function; "
7777 "cannot be declared friend", unqualified_id);
7785 /* Friends are treated specially. */
7786 if (ctype == current_class_type)
7787 warning ("member functions are implicitly friends of their class");
7788 else if (decl && DECL_NAME (decl))
7790 if (template_class_depth (current_class_type) == 0)
7792 decl = check_explicit_specialization
7793 (unqualified_id, decl, template_count,
7794 2 * (funcdef_flag != 0) + 4);
7795 if (decl == error_mark_node)
7796 return error_mark_node;
7799 decl = do_friend (ctype, unqualified_id, decl,
7800 *attrlist, flags, quals, funcdef_flag);
7804 return void_type_node;
7807 /* Structure field. It may not be a function, except for C++. */
7809 if (decl == NULL_TREE)
7815 /* An attempt is being made to initialize a non-static
7816 member. But, from [class.mem]:
7818 4 A member-declarator can contain a
7819 constant-initializer only if it declares a static
7820 member (_class.static_) of integral or enumeration
7821 type, see _class.static.data_.
7823 This used to be relatively common practice, but
7824 the rest of the compiler does not correctly
7825 handle the initialization unless the member is
7826 static so we make it static below. */
7827 pedwarn ("ISO C++ forbids initialization of member `%D'",
7829 pedwarn ("making `%D' static", unqualified_id);
7833 if (uses_template_parms (type))
7834 /* We'll check at instantiation time. */
7836 else if (check_static_variable_definition (unqualified_id,
7838 /* If we just return the declaration, crashes
7839 will sometimes occur. We therefore return
7840 void_type_node, as if this was a friend
7841 declaration, to cause callers to completely
7842 ignore this declaration. */
7843 return void_type_node;
7848 /* C++ allows static class members. All other work
7849 for this is done by grokfield. */
7850 decl = build_lang_decl (VAR_DECL, unqualified_id, type);
7851 TREE_STATIC (decl) = 1;
7852 /* In class context, 'static' means public access. */
7853 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = 1;
7857 decl = build_decl (FIELD_DECL, unqualified_id, type);
7858 DECL_NONADDRESSABLE_P (decl) = bitfield;
7859 if (declspecs->storage_class == sc_mutable)
7861 DECL_MUTABLE_P (decl) = 1;
7862 declspecs->storage_class = sc_none;
7866 bad_specifiers (decl, "field", virtualp, quals != TYPE_UNQUALIFIED,
7867 inlinep, friendp, raises != NULL_TREE);
7870 else if (TREE_CODE (type) == FUNCTION_TYPE
7871 || TREE_CODE (type) == METHOD_TYPE)
7876 if (!unqualified_id)
7879 if (TREE_CODE (unqualified_id) == TEMPLATE_ID_EXPR)
7880 original_name = dname;
7882 original_name = unqualified_id;
7884 if (declspecs->storage_class == sc_auto)
7885 error ("storage class `auto' invalid for function `%s'", name);
7886 else if (declspecs->storage_class == sc_register)
7887 error ("storage class `register' invalid for function `%s'", name);
7888 else if (declspecs->specs[(int)ds_thread])
7889 error ("storage class `__thread' invalid for function `%s'", name);
7891 /* Function declaration not at top level.
7892 Storage classes other than `extern' are not allowed
7893 and `extern' makes no difference. */
7894 if (! toplevel_bindings_p ()
7895 && (declspecs->storage_class == sc_static
7896 || declspecs->specs[(int)ds_inline])
7899 if (declspecs->storage_class == sc_static)
7900 pedwarn ("`static' specified invalid for function `%s' declared out of global scope", name);
7902 pedwarn ("`inline' specifier invalid for function `%s' declared out of global scope", name);
7905 if (ctype == NULL_TREE)
7909 error ("virtual non-class function `%s'", name);
7913 else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2
7914 && !NEW_DELETE_OPNAME_P (original_name))
7915 type = build_method_type_directly (ctype,
7917 TYPE_ARG_TYPES (type));
7919 /* Record presence of `static'. */
7920 publicp = (ctype != NULL_TREE
7921 || declspecs->storage_class == sc_extern
7922 || declspecs->storage_class != sc_static);
7924 decl = grokfndecl (ctype, type, original_name, parms, unqualified_id,
7925 virtualp, flags, quals, raises,
7927 publicp, inlinep, funcdef_flag,
7928 template_count, in_namespace);
7929 if (decl == NULL_TREE)
7934 int invalid_static = 0;
7936 /* Don't allow a static member function in a class, and forbid
7937 declaring main to be static. */
7938 if (TREE_CODE (type) == METHOD_TYPE)
7940 pedwarn ("cannot declare member function `%D' to have static linkage", decl);
7943 else if (current_function_decl)
7945 /* FIXME need arm citation */
7946 error ("cannot declare static function inside another function");
7953 declspecs->storage_class = sc_none;
7959 /* It's a variable. */
7961 /* An uninitialized decl with `extern' is a reference. */
7962 decl = grokvardecl (type, unqualified_id,
7965 (type_quals & TYPE_QUAL_CONST) != 0,
7966 ctype ? ctype : in_namespace);
7967 bad_specifiers (decl, "variable", virtualp, quals != TYPE_UNQUALIFIED,
7968 inlinep, friendp, raises != NULL_TREE);
7972 DECL_CONTEXT (decl) = ctype;
7975 pedwarn ("`static' may not be used when defining (as opposed to declaring) a static data member");
7977 declspecs->storage_class = sc_none;
7979 if (declspecs->storage_class == sc_register && TREE_STATIC (decl))
7981 error ("static member `%D' declared `register'", decl);
7982 declspecs->storage_class = sc_none;
7984 if (declspecs->storage_class == sc_extern && pedantic)
7986 pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
7988 declspecs->storage_class = sc_none;
7993 /* Record `register' declaration for warnings on &
7994 and in case doing stupid register allocation. */
7996 if (declspecs->storage_class == sc_register)
7997 DECL_REGISTER (decl) = 1;
7998 else if (declspecs->storage_class == sc_extern)
7999 DECL_THIS_EXTERN (decl) = 1;
8000 else if (declspecs->storage_class == sc_static)
8001 DECL_THIS_STATIC (decl) = 1;
8003 /* Record constancy and volatility. There's no need to do this
8004 when processing a template; we'll do this for the instantiated
8005 declaration based on the type of DECL. */
8006 if (!processing_template_decl)
8007 c_apply_type_quals_to_decl (type_quals, decl);
8013 /* Subroutine of start_function. Ensure that each of the parameter
8014 types (as listed in PARMS) is complete, as is required for a
8015 function definition. */
8018 require_complete_types_for_parms (tree parms)
8020 for (; parms; parms = TREE_CHAIN (parms))
8022 if (VOID_TYPE_P (TREE_TYPE (parms)))
8023 /* grokparms will have already issued an error. */
8024 TREE_TYPE (parms) = error_mark_node;
8025 else if (complete_type_or_else (TREE_TYPE (parms), parms))
8027 layout_decl (parms, 0);
8028 DECL_ARG_TYPE (parms) = type_passed_as (TREE_TYPE (parms));
8033 /* Returns nonzero if T is a local variable. */
8036 local_variable_p (tree t)
8038 if ((TREE_CODE (t) == VAR_DECL
8039 /* A VAR_DECL with a context that is a _TYPE is a static data
8041 && !TYPE_P (CP_DECL_CONTEXT (t))
8042 /* Any other non-local variable must be at namespace scope. */
8043 && !DECL_NAMESPACE_SCOPE_P (t))
8044 || (TREE_CODE (t) == PARM_DECL))
8050 /* Returns nonzero if T is an automatic local variable or a label.
8051 (These are the declarations that need to be remapped when the code
8052 containing them is duplicated.) */
8055 nonstatic_local_decl_p (tree t)
8057 return ((local_variable_p (t) && !TREE_STATIC (t))
8058 || TREE_CODE (t) == LABEL_DECL
8059 || TREE_CODE (t) == RESULT_DECL);
8062 /* Like local_variable_p, but suitable for use as a tree-walking
8066 local_variable_p_walkfn (tree *tp, int *walk_subtrees,
8067 void *data ATTRIBUTE_UNUSED)
8069 if (local_variable_p (*tp) && !DECL_ARTIFICIAL (*tp))
8071 else if (TYPE_P (*tp))
8078 /* Check that ARG, which is a default-argument expression for a
8079 parameter DECL, is valid. Returns ARG, or ERROR_MARK_NODE, if
8080 something goes wrong. DECL may also be a _TYPE node, rather than a
8081 DECL, if there is no DECL available. */
8084 check_default_argument (tree decl, tree arg)
8089 if (TREE_CODE (arg) == DEFAULT_ARG)
8090 /* We get a DEFAULT_ARG when looking at an in-class declaration
8091 with a default argument. Ignore the argument for now; we'll
8092 deal with it after the class is complete. */
8095 if (processing_template_decl || uses_template_parms (arg))
8096 /* We don't do anything checking until instantiation-time. Note
8097 that there may be uninstantiated arguments even for an
8098 instantiated function, since default arguments are not
8099 instantiated until they are needed. */
8108 decl_type = TREE_TYPE (decl);
8110 if (arg == error_mark_node
8111 || decl == error_mark_node
8112 || TREE_TYPE (arg) == error_mark_node
8113 || decl_type == error_mark_node)
8114 /* Something already went wrong. There's no need to check
8116 return error_mark_node;
8118 /* [dcl.fct.default]
8120 A default argument expression is implicitly converted to the
8122 if (!TREE_TYPE (arg)
8123 || !can_convert_arg (decl_type, TREE_TYPE (arg), arg))
8126 error ("default argument for `%#D' has type `%T'",
8127 decl, TREE_TYPE (arg));
8129 error ("default argument for parameter of type `%T' has type `%T'",
8130 decl_type, TREE_TYPE (arg));
8132 return error_mark_node;
8135 /* [dcl.fct.default]
8137 Local variables shall not be used in default argument
8140 The keyword `this' shall not be used in a default argument of a
8142 var = walk_tree_without_duplicates (&arg, local_variable_p_walkfn,
8146 error ("default argument `%E' uses local variable `%D'",
8148 return error_mark_node;
8155 /* Decode the list of parameter types for a function type.
8156 Given the list of things declared inside the parens,
8157 return a list of types.
8159 If this parameter does not end with an ellipsis, we append
8162 *PARMS is set to the chain of PARM_DECLs created. */
8165 grokparms (cp_parameter_declarator *first_parm, tree *parms)
8167 tree result = NULL_TREE;
8168 tree decls = NULL_TREE;
8169 int ellipsis = !first_parm || first_parm->ellipsis_p;
8170 cp_parameter_declarator *parm;
8173 for (parm = first_parm; parm != NULL; parm = parm->next)
8175 tree type = NULL_TREE;
8176 tree init = parm->default_argument;
8180 if (parm == no_parameters)
8183 attrs = parm->decl_specifiers.attributes;
8184 parm->decl_specifiers.attributes = NULL_TREE;
8185 decl = grokdeclarator (parm->declarator, &parm->decl_specifiers,
8186 PARM, init != NULL_TREE, &attrs);
8187 if (! decl || TREE_TYPE (decl) == error_mark_node)
8191 cplus_decl_attributes (&decl, attrs, 0);
8193 type = TREE_TYPE (decl);
8194 if (VOID_TYPE_P (type))
8196 if (same_type_p (type, void_type_node)
8197 && !DECL_NAME (decl) && !result && !parm->next && !ellipsis)
8198 /* this is a parmlist of `(void)', which is ok. */
8200 cxx_incomplete_type_error (decl, type);
8201 /* It's not a good idea to actually create parameters of
8202 type `void'; other parts of the compiler assume that a
8203 void type terminates the parameter list. */
8204 type = error_mark_node;
8205 TREE_TYPE (decl) = error_mark_node;
8208 if (type != error_mark_node)
8210 /* Top-level qualifiers on the parameters are
8211 ignored for function types. */
8212 type = cp_build_qualified_type (type, 0);
8213 if (TREE_CODE (type) == METHOD_TYPE)
8215 error ("parameter `%D' invalidly declared method type", decl);
8216 type = build_pointer_type (type);
8217 TREE_TYPE (decl) = type;
8219 else if (abstract_virtuals_error (decl, type))
8220 any_error = 1; /* Seems like a good idea. */
8221 else if (POINTER_TYPE_P (type))
8223 /* [dcl.fct]/6, parameter types cannot contain pointers
8224 (references) to arrays of unknown bound. */
8225 tree t = TREE_TYPE (type);
8226 int ptr = TYPE_PTR_P (type);
8232 else if (TREE_CODE (t) != ARRAY_TYPE)
8234 else if (!TYPE_DOMAIN (t))
8238 if (TREE_CODE (t) == ARRAY_TYPE)
8239 error ("parameter `%D' includes %s to array of unknown bound `%T'",
8240 decl, ptr ? "pointer" : "reference", t);
8243 if (!any_error && init)
8244 init = check_default_argument (decl, init);
8249 TREE_CHAIN (decl) = decls;
8251 result = tree_cons (init, type, result);
8253 decls = nreverse (decls);
8254 result = nreverse (result);
8256 result = chainon (result, void_list_node);
8263 /* D is a constructor or overloaded `operator='.
8265 Let T be the class in which D is declared. Then, this function
8268 -1 if D's is an ill-formed constructor or copy assignment operator
8269 whose first parameter is of type `T'.
8270 0 if D is not a copy constructor or copy assignment
8272 1 if D is a copy constructor or copy assignment operator whose
8273 first parameter is a reference to const qualified T.
8274 2 if D is a copy constructor or copy assignment operator whose
8275 first parameter is a reference to non-const qualified T.
8277 This function can be used as a predicate. Positive values indicate
8278 a copy constructor and nonzero values indicate a copy assignment
8288 my_friendly_assert (DECL_FUNCTION_MEMBER_P (d), 20011208);
8290 if (DECL_TEMPLATE_INFO (d) && is_member_template (DECL_TI_TEMPLATE (d)))
8291 /* Instantiations of template member functions are never copy
8292 functions. Note that member functions of templated classes are
8293 represented as template functions internally, and we must
8294 accept those as copy functions. */
8297 args = FUNCTION_FIRST_USER_PARMTYPE (d);
8301 arg_type = TREE_VALUE (args);
8303 if (TYPE_MAIN_VARIANT (arg_type) == DECL_CONTEXT (d))
8305 /* Pass by value copy assignment operator. */
8308 else if (TREE_CODE (arg_type) == REFERENCE_TYPE
8309 && TYPE_MAIN_VARIANT (TREE_TYPE (arg_type)) == DECL_CONTEXT (d))
8311 if (CP_TYPE_CONST_P (TREE_TYPE (arg_type)))
8317 args = TREE_CHAIN (args);
8319 if (args && args != void_list_node && !TREE_PURPOSE (args))
8320 /* There are more non-optional args. */
8326 /* Remember any special properties of member function DECL. */
8328 void grok_special_member_properties (tree decl)
8330 if (!DECL_NONSTATIC_MEMBER_FUNCTION_P(decl))
8331 ; /* Not special. */
8332 else if (DECL_CONSTRUCTOR_P (decl))
8334 int ctor = copy_fn_p (decl);
8340 A non-template constructor for class X is a copy
8341 constructor if its first parameter is of type X&, const
8342 X&, volatile X& or const volatile X&, and either there
8343 are no other parameters or else all other parameters have
8344 default arguments. */
8345 TYPE_HAS_INIT_REF (DECL_CONTEXT (decl)) = 1;
8347 TYPE_HAS_CONST_INIT_REF (DECL_CONTEXT (decl)) = 1;
8349 else if (sufficient_parms_p (FUNCTION_FIRST_USER_PARMTYPE (decl)))
8350 TYPE_HAS_DEFAULT_CONSTRUCTOR (DECL_CONTEXT (decl)) = 1;
8352 else if (DECL_OVERLOADED_OPERATOR_P (decl) == NOP_EXPR)
8356 A non-template assignment operator for class X is a copy
8357 assignment operator if its parameter is of type X, X&, const
8358 X&, volatile X& or const volatile X&. */
8360 int assop = copy_fn_p (decl);
8364 TYPE_HAS_ASSIGN_REF (DECL_CONTEXT (decl)) = 1;
8366 TYPE_HAS_CONST_ASSIGN_REF (DECL_CONTEXT (decl)) = 1;
8367 if (DECL_PURE_VIRTUAL_P (decl))
8368 TYPE_HAS_ABSTRACT_ASSIGN_REF (DECL_CONTEXT (decl)) = 1;
8373 /* Check a constructor DECL has the correct form. Complains
8374 if the class has a constructor of the form X(X). */
8377 grok_ctor_properties (tree ctype, tree decl)
8379 int ctor_parm = copy_fn_p (decl);
8385 A declaration of a constructor for a class X is ill-formed if
8386 its first parameter is of type (optionally cv-qualified) X
8387 and either there are no other parameters or else all other
8388 parameters have default arguments.
8390 We *don't* complain about member template instantiations that
8391 have this form, though; they can occur as we try to decide
8392 what constructor to use during overload resolution. Since
8393 overload resolution will never prefer such a constructor to
8394 the non-template copy constructor (which is either explicitly
8395 or implicitly defined), there's no need to worry about their
8396 existence. Theoretically, they should never even be
8397 instantiated, but that's hard to forestall. */
8398 error ("invalid constructor; you probably meant `%T (const %T&)'",
8406 /* An operator with this code is unary, but can also be binary. */
8409 ambi_op_p (enum tree_code code)
8411 return (code == INDIRECT_REF
8412 || code == ADDR_EXPR
8413 || code == CONVERT_EXPR
8414 || code == NEGATE_EXPR
8415 || code == PREINCREMENT_EXPR
8416 || code == PREDECREMENT_EXPR);
8419 /* An operator with this name can only be unary. */
8422 unary_op_p (enum tree_code code)
8424 return (code == TRUTH_NOT_EXPR
8425 || code == BIT_NOT_EXPR
8426 || code == COMPONENT_REF
8427 || code == TYPE_EXPR);
8430 /* DECL is a declaration for an overloaded operator. Returns true if
8431 the declaration is valid; false otherwise. If COMPLAIN is true,
8432 errors are issued for invalid declarations. */
8435 grok_op_properties (tree decl, int friendp, bool complain)
8437 tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
8439 int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
8440 tree name = DECL_NAME (decl);
8441 enum tree_code operator_code;
8445 /* Assume that the declaration is valid. */
8448 /* Count the number of arguments. */
8449 for (argtype = argtypes, arity = 0;
8450 argtype && argtype != void_list_node;
8451 argtype = TREE_CHAIN (argtype))
8454 if (current_class_type == NULL_TREE)
8457 if (DECL_CONV_FN_P (decl))
8458 operator_code = TYPE_EXPR;
8462 #define DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, ASSN_P) \
8463 if (ansi_opname (CODE) == name) \
8465 operator_code = (CODE); \
8468 else if (ansi_assopname (CODE) == name) \
8470 operator_code = (CODE); \
8471 DECL_ASSIGNMENT_OPERATOR_P (decl) = 1; \
8475 #include "operators.def"
8481 my_friendly_assert (operator_code != LAST_CPLUS_TREE_CODE, 20000526);
8482 SET_OVERLOADED_OPERATOR_CODE (decl, operator_code);
8486 switch (operator_code)
8489 TYPE_HAS_NEW_OPERATOR (current_class_type) = 1;
8493 TYPE_GETS_DELETE (current_class_type) |= 1;
8497 TYPE_HAS_ARRAY_NEW_OPERATOR (current_class_type) = 1;
8500 case VEC_DELETE_EXPR:
8501 TYPE_GETS_DELETE (current_class_type) |= 2;
8509 if (operator_code == NEW_EXPR || operator_code == VEC_NEW_EXPR)
8510 TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
8511 else if (operator_code == DELETE_EXPR || operator_code == VEC_DELETE_EXPR)
8512 TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
8515 /* An operator function must either be a non-static member function
8516 or have at least one parameter of a class, a reference to a class,
8517 an enumeration, or a reference to an enumeration. 13.4.0.6 */
8518 if (! methodp || DECL_STATIC_FUNCTION_P (decl))
8520 if (operator_code == TYPE_EXPR
8521 || operator_code == CALL_EXPR
8522 || operator_code == COMPONENT_REF
8523 || operator_code == ARRAY_REF
8524 || operator_code == NOP_EXPR)
8525 error ("`%D' must be a nonstatic member function", decl);
8530 if (DECL_STATIC_FUNCTION_P (decl))
8531 error ("`%D' must be either a non-static member function or a non-member function", decl);
8533 for (p = argtypes; p && p != void_list_node; p = TREE_CHAIN (p))
8535 tree arg = non_reference (TREE_VALUE (p));
8536 /* IS_AGGR_TYPE, rather than CLASS_TYPE_P, is used
8537 because these checks are performed even on
8538 template functions. */
8539 if (IS_AGGR_TYPE (arg) || TREE_CODE (arg) == ENUMERAL_TYPE)
8543 if (!p || p == void_list_node)
8548 error ("`%D' must have an argument of class or "
8556 /* There are no restrictions on the arguments to an overloaded
8558 if (operator_code == CALL_EXPR)
8561 if (IDENTIFIER_TYPENAME_P (name) && ! DECL_TEMPLATE_INFO (decl))
8563 tree t = TREE_TYPE (name);
8566 int ref = (TREE_CODE (t) == REFERENCE_TYPE);
8567 const char *what = 0;
8570 t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
8572 if (TREE_CODE (t) == VOID_TYPE)
8574 else if (t == current_class_type)
8575 what = "the same type";
8576 /* Don't force t to be complete here. */
8577 else if (IS_AGGR_TYPE (t)
8578 && COMPLETE_TYPE_P (t)
8579 && DERIVED_FROM_P (t, current_class_type))
8580 what = "a base class";
8582 if (what && warn_conversion)
8583 warning ("conversion to %s%s will never use a type conversion operator",
8584 ref ? "a reference to " : "", what);
8587 if (operator_code == COND_EXPR)
8590 error ("ISO C++ prohibits overloading operator ?:");
8592 else if (ambi_op_p (operator_code))
8595 /* We pick the one-argument operator codes by default, so
8596 we don't have to change anything. */
8598 else if (arity == 2)
8600 /* If we thought this was a unary operator, we now know
8601 it to be a binary operator. */
8602 switch (operator_code)
8605 operator_code = MULT_EXPR;
8609 operator_code = BIT_AND_EXPR;
8613 operator_code = PLUS_EXPR;
8617 operator_code = MINUS_EXPR;
8620 case PREINCREMENT_EXPR:
8621 operator_code = POSTINCREMENT_EXPR;
8624 case PREDECREMENT_EXPR:
8625 operator_code = POSTDECREMENT_EXPR;
8632 SET_OVERLOADED_OPERATOR_CODE (decl, operator_code);
8634 if ((operator_code == POSTINCREMENT_EXPR
8635 || operator_code == POSTDECREMENT_EXPR)
8636 && ! processing_template_decl
8637 && ! same_type_p (TREE_VALUE (TREE_CHAIN (argtypes)), integer_type_node))
8640 error ("postfix `%D' must take `int' as its argument",
8644 ("postfix `%D' must take `int' as its second argument",
8651 error ("`%D' must take either zero or one argument", decl);
8653 error ("`%D' must take either one or two arguments", decl);
8656 /* More Effective C++ rule 6. */
8658 && (operator_code == POSTINCREMENT_EXPR
8659 || operator_code == POSTDECREMENT_EXPR
8660 || operator_code == PREINCREMENT_EXPR
8661 || operator_code == PREDECREMENT_EXPR))
8663 tree arg = TREE_VALUE (argtypes);
8664 tree ret = TREE_TYPE (TREE_TYPE (decl));
8665 if (methodp || TREE_CODE (arg) == REFERENCE_TYPE)
8666 arg = TREE_TYPE (arg);
8667 arg = TYPE_MAIN_VARIANT (arg);
8668 if (operator_code == PREINCREMENT_EXPR
8669 || operator_code == PREDECREMENT_EXPR)
8671 if (TREE_CODE (ret) != REFERENCE_TYPE
8672 || !same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (ret)),
8674 warning ("prefix `%D' should return `%T'", decl,
8675 build_reference_type (arg));
8679 if (!same_type_p (TYPE_MAIN_VARIANT (ret), arg))
8680 warning ("postfix `%D' should return `%T'", decl, arg);
8684 else if (unary_op_p (operator_code))
8689 error ("`%D' must take `void'", decl);
8691 error ("`%D' must take exactly one argument", decl);
8694 else /* if (binary_op_p (operator_code)) */
8699 error ("`%D' must take exactly one argument", decl);
8701 error ("`%D' must take exactly two arguments", decl);
8704 /* More Effective C++ rule 7. */
8706 && (operator_code == TRUTH_ANDIF_EXPR
8707 || operator_code == TRUTH_ORIF_EXPR
8708 || operator_code == COMPOUND_EXPR))
8709 warning ("user-defined `%D' always evaluates both arguments",
8713 /* Effective C++ rule 23. */
8716 && !DECL_ASSIGNMENT_OPERATOR_P (decl)
8717 && (operator_code == PLUS_EXPR
8718 || operator_code == MINUS_EXPR
8719 || operator_code == TRUNC_DIV_EXPR
8720 || operator_code == MULT_EXPR
8721 || operator_code == TRUNC_MOD_EXPR)
8722 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == REFERENCE_TYPE)
8723 warning ("`%D' should return by value", decl);
8726 for (; argtypes && argtypes != void_list_node;
8727 argtypes = TREE_CHAIN (argtypes))
8728 if (TREE_PURPOSE (argtypes))
8730 TREE_PURPOSE (argtypes) = NULL_TREE;
8731 if (operator_code == POSTINCREMENT_EXPR
8732 || operator_code == POSTDECREMENT_EXPR)
8735 pedwarn ("`%D' cannot have default arguments", decl);
8738 error ("`%D' cannot have default arguments", decl);
8747 tag_name (enum tag_types code)
8764 /* Name lookup in an elaborated-type-specifier (after the keyword
8765 indicated by TAG_CODE) has found the TYPE_DECL DECL. If the
8766 elaborated-type-specifier is invalid, issue a diagnostic and return
8767 error_mark_node; otherwise, return the *_TYPE to which it referred.
8768 If ALLOW_TEMPLATE_P is true, TYPE may be a class template. */
8771 check_elaborated_type_specifier (enum tag_types tag_code,
8773 bool allow_template_p)
8779 struct S { struct S *p; };
8781 name lookup will find the TYPE_DECL for the implicit "S::S"
8782 typedef. Adjust for that here. */
8783 if (DECL_SELF_REFERENCE_P (decl))
8784 decl = TYPE_NAME (TREE_TYPE (decl));
8786 type = TREE_TYPE (decl);
8790 If the identifier resolves to a typedef-name or a template
8791 type-parameter, the elaborated-type-specifier is ill-formed.
8793 In other words, the only legitimate declaration to use in the
8794 elaborated type specifier is the implicit typedef created when
8795 the type is declared. */
8796 if (!DECL_IMPLICIT_TYPEDEF_P (decl))
8798 error ("using typedef-name `%D' after `%s'", decl, tag_name (tag_code));
8799 return IS_AGGR_TYPE (type) ? type : error_mark_node;
8802 if (TREE_CODE (type) == TEMPLATE_TYPE_PARM)
8804 error ("using template type parameter `%T' after `%s'",
8805 type, tag_name (tag_code));
8806 return error_mark_node;
8808 else if (TREE_CODE (type) != RECORD_TYPE
8809 && TREE_CODE (type) != UNION_TYPE
8810 && tag_code != enum_type)
8812 error ("`%T' referred to as `%s'", type, tag_name (tag_code));
8813 return error_mark_node;
8815 else if (TREE_CODE (type) != ENUMERAL_TYPE
8816 && tag_code == enum_type)
8818 error ("`%T' referred to as enum", type);
8819 return error_mark_node;
8821 else if (!allow_template_p
8822 && TREE_CODE (type) == RECORD_TYPE
8823 && CLASSTYPE_IS_TEMPLATE (type))
8825 /* If a class template appears as elaborated type specifier
8826 without a template header such as:
8828 template <class T> class C {};
8829 void f(class C); // No template header here
8831 then the required template argument is missing. */
8833 error ("template argument required for `%s %T'",
8834 tag_name (tag_code),
8835 DECL_NAME (CLASSTYPE_TI_TEMPLATE (type)));
8836 return error_mark_node;
8842 /* Get the struct, enum or union (TAG_CODE says which) with tag NAME.
8843 Define the tag as a forward-reference if it is not defined.
8845 If a declaration is given, process it here, and report an error if
8846 multiple declarations are not identical.
8848 GLOBALIZE is false when this is also a definition. Only look in
8849 the current frame for the name (since C++ allows new names in any
8852 TEMPLATE_HEADER_P is true when this declaration is preceded by
8853 a set of template parameters. */
8856 xref_tag (enum tag_types tag_code, tree name,
8857 bool globalize, bool template_header_p)
8859 enum tree_code code;
8861 struct cp_binding_level *b = current_binding_level;
8862 tree context = NULL_TREE;
8864 timevar_push (TV_NAME_LOOKUP);
8866 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 0);
8878 code = ENUMERAL_TYPE;
8886 /* If we know we are defining this tag, only look it up in
8887 this scope and don't try to find it as a type. */
8888 t = lookup_tag (code, name, b, 1);
8892 tree decl = lookup_name (name, 2);
8894 if (decl && DECL_CLASS_TEMPLATE_P (decl))
8895 decl = DECL_TEMPLATE_RESULT (decl);
8897 if (decl && TREE_CODE (decl) == TYPE_DECL)
8899 /* Two cases we need to consider when deciding if a class
8900 template is allowed as an elaborated type specifier:
8901 1. It is a self reference to its own class.
8902 2. It comes with a template header.
8906 template <class T> class C {
8907 class C *c1; // DECL_SELF_REFERENCE_P is true
8910 template <class U> class C; // template_header_p is true
8911 template <class T> class C<T>::D {
8912 class C *c2; // DECL_SELF_REFERENCE_P is true
8915 t = check_elaborated_type_specifier (tag_code,
8918 | DECL_SELF_REFERENCE_P (decl));
8919 if (t == error_mark_node)
8920 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
8925 if (t && current_class_type
8926 && template_class_depth (current_class_type)
8927 && template_header_p)
8929 /* Since GLOBALIZE is nonzero, we are not looking at a
8930 definition of this tag. Since, in addition, we are currently
8931 processing a (member) template declaration of a template
8932 class, we must be very careful; consider:
8939 { template <class V>
8940 friend struct S1; };
8942 Here, the S2::S1 declaration should not be confused with the
8943 outer declaration. In particular, the inner version should
8944 have a template parameter of level 2, not level 1. This
8945 would be particularly important if the member declaration
8948 template <class V = U> friend struct S1;
8950 say, when we should tsubst into `U' when instantiating
8951 S2. On the other hand, when presented with:
8961 we must find the inner binding eventually. We
8962 accomplish this by making sure that the new type we
8963 create to represent this declaration has the right
8965 context = TYPE_CONTEXT (t);
8972 /* If no such tag is yet defined, create a forward-reference node
8973 and record it as the "definition".
8974 When a real declaration of this type is found,
8975 the forward-reference will be altered into a real type. */
8976 if (code == ENUMERAL_TYPE)
8978 error ("use of enum `%#D' without previous declaration", name);
8979 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
8983 t = make_aggr_type (code);
8984 TYPE_CONTEXT (t) = context;
8985 pushtag (name, t, globalize);
8990 if (!globalize && processing_template_decl && IS_AGGR_TYPE (t))
8991 redeclare_class_template (t, current_template_parms);
8992 else if (!processing_template_decl
8994 && CLASSTYPE_IS_TEMPLATE (t))
8996 error ("redeclaration of `%T' as a non-template", t);
8997 t = error_mark_node;
9001 POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
9005 xref_tag_from_type (tree old, tree id, int globalize)
9007 enum tag_types tag_kind;
9009 if (TREE_CODE (old) == RECORD_TYPE)
9010 tag_kind = (CLASSTYPE_DECLARED_CLASS (old) ? class_type : record_type);
9012 tag_kind = union_type;
9014 if (id == NULL_TREE)
9015 id = TYPE_IDENTIFIER (old);
9017 return xref_tag (tag_kind, id, globalize, false);
9020 /* REF is a type (named NAME), for which we have just seen some
9021 baseclasses. BASE_LIST is a list of those baseclasses; the
9022 TREE_PURPOSE is an access_* node, and the TREE_VALUE is the type of
9023 the base-class. Non-NULL TREE_TYPE indicates virtual inheritance.
9024 CODE_TYPE_NODE indicates whether REF is a class, struct, or
9028 xref_basetypes (tree ref, tree base_list)
9030 /* In the declaration `A : X, Y, ... Z' we mark all the types
9031 (A, X, Y, ..., Z) so we can check for duplicates. */
9033 unsigned max_vbases = 0;
9035 enum tag_types tag_code;
9037 if (ref == error_mark_node)
9040 if (TREE_CODE (ref) == UNION_TYPE)
9042 error ("derived union `%T' invalid", ref);
9046 tag_code = (CLASSTYPE_DECLARED_CLASS (ref) ? class_type : record_type);
9048 /* First, make sure that any templates in base-classes are
9049 instantiated. This ensures that if we call ourselves recursively
9050 we do not get confused about which classes are marked and which
9055 tree basetype = TREE_VALUE (*basep);
9056 if (!(processing_template_decl && uses_template_parms (basetype))
9057 && !complete_type_or_else (basetype, NULL))
9058 /* An incomplete type. Remove it from the list. */
9059 *basep = TREE_CHAIN (*basep);
9061 basep = &TREE_CHAIN (*basep);
9064 SET_CLASSTYPE_MARKED (ref);
9065 i = list_length (base_list);
9068 tree binfo = TYPE_BINFO (ref);
9069 tree binfos = make_tree_vec (i);
9070 tree accesses = make_tree_vec (i);
9072 BINFO_BASE_BINFOS (binfo) = binfos;
9073 BINFO_BASE_ACCESSES (binfo) = accesses;
9075 for (i = 0; base_list; base_list = TREE_CHAIN (base_list))
9077 tree access = TREE_PURPOSE (base_list);
9078 int via_virtual = TREE_TYPE (base_list) != NULL_TREE;
9079 tree basetype = TREE_VALUE (base_list);
9084 if (access == access_default_node)
9085 /* The base of a derived struct is public by default. */
9086 access = (tag_code == class_type
9087 ? access_private_node : access_public_node);
9089 if (basetype && TREE_CODE (basetype) == TYPE_DECL)
9090 basetype = TREE_TYPE (basetype);
9092 || (TREE_CODE (basetype) != RECORD_TYPE
9093 && TREE_CODE (basetype) != TYPENAME_TYPE
9094 && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM
9095 && TREE_CODE (basetype) != BOUND_TEMPLATE_TEMPLATE_PARM))
9097 error ("base type `%T' fails to be a struct or class type",
9102 if (CLASSTYPE_MARKED (basetype))
9104 if (basetype == ref)
9105 error ("recursive type `%T' undefined", basetype);
9107 error ("duplicate base type `%T' invalid", basetype);
9111 if (TYPE_FOR_JAVA (basetype)
9112 && (current_lang_depth () == 0))
9113 TYPE_FOR_JAVA (ref) = 1;
9115 if (CLASS_TYPE_P (basetype))
9117 base_binfo = TYPE_BINFO (basetype);
9118 /* This flag will be in the binfo of the base type, we must
9119 clear it after copying the base binfos. */
9120 BINFO_DEPENDENT_BASE_P (base_binfo)
9121 = dependent_type_p (basetype);
9124 base_binfo = make_binfo (size_zero_node, basetype,
9125 NULL_TREE, NULL_TREE);
9127 TREE_VEC_ELT (binfos, i) = base_binfo;
9128 TREE_VEC_ELT (accesses, i) = access;
9129 /* This flag will be in the binfo of the base type, we must
9130 clear it after copying the base binfos. */
9131 BINFO_VIRTUAL_P (base_binfo) = via_virtual;
9133 SET_CLASSTYPE_MARKED (basetype);
9135 /* We are free to modify these bits because they are meaningless
9136 at top level, and BASETYPE is a top-level type. */
9137 if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype))
9139 TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1;
9140 /* Converting to a virtual base class requires looking
9141 up the offset of the virtual base. */
9142 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) = 1;
9145 if (CLASS_TYPE_P (basetype))
9147 TYPE_HAS_NEW_OPERATOR (ref)
9148 |= TYPE_HAS_NEW_OPERATOR (basetype);
9149 TYPE_HAS_ARRAY_NEW_OPERATOR (ref)
9150 |= TYPE_HAS_ARRAY_NEW_OPERATOR (basetype);
9151 TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
9152 /* If the base-class uses multiple inheritance, so do we. */
9153 TYPE_USES_MULTIPLE_INHERITANCE (ref)
9154 |= TYPE_USES_MULTIPLE_INHERITANCE (basetype);
9155 /* Likewise, if converting to a base of the base may require
9156 code, then we may need to generate code to convert to a
9158 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref)
9159 |= TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (basetype);
9160 max_vbases += VEC_length
9161 (tree, CLASSTYPE_VBASECLASSES (basetype));
9166 TREE_VEC_LENGTH (accesses) = TREE_VEC_LENGTH (binfos) = i;
9168 BINFO_BASE_ACCESSES (binfo) = BINFO_BASE_BINFOS (binfo) = NULL_TREE;
9170 CLASSTYPE_VBASECLASSES (ref) = VEC_alloc (tree, max_vbases);
9174 TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1;
9175 /* If there is more than one non-empty they cannot be at the same
9177 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref) = 1;
9181 /* Copy the base binfos, collect the virtual bases and set the
9182 inheritance order chain. */
9183 copy_base_binfos (TYPE_BINFO (ref), ref, NULL_TREE);
9185 if (TYPE_FOR_JAVA (ref))
9187 if (TYPE_USES_MULTIPLE_INHERITANCE (ref))
9188 error ("Java class '%T' cannot have multiple bases", ref);
9189 if (CLASSTYPE_VBASECLASSES (ref))
9190 error ("Java class '%T' cannot have virtual bases", ref);
9193 /* Unmark all the types. */
9196 tree basetype = BINFO_TYPE (BINFO_BASE_BINFO (TYPE_BINFO (ref), i));
9198 CLEAR_CLASSTYPE_MARKED (basetype);
9199 if (CLASS_TYPE_P (basetype))
9201 BINFO_VIRTUAL_P (TYPE_BINFO (basetype)) = 0;
9202 BINFO_DEPENDENT_BASE_P (TYPE_BINFO (basetype)) = 0;
9205 CLEAR_CLASSTYPE_MARKED (ref);
9209 /* Begin compiling the definition of an enumeration type.
9210 NAME is its name (or null if anonymous).
9211 Returns the type object, as yet incomplete.
9212 Also records info about it so that build_enumerator
9213 may be used to declare the individual values as they are read. */
9216 start_enum (tree name)
9218 tree enumtype = NULL_TREE;
9219 struct cp_binding_level *b = current_binding_level;
9221 /* If this is the real definition for a previous forward reference,
9222 fill in the contents in the same object that used to be the
9223 forward reference. */
9225 if (name != NULL_TREE)
9226 enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1);
9228 if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE)
9230 error ("multiple definition of `%#T'", enumtype);
9231 error ("%Jprevious definition here", TYPE_MAIN_DECL (enumtype));
9232 /* Clear out TYPE_VALUES, and start again. */
9233 TYPE_VALUES (enumtype) = NULL_TREE;
9237 enumtype = make_node (ENUMERAL_TYPE);
9238 pushtag (name, enumtype, 0);
9244 /* After processing and defining all the values of an enumeration type,
9245 install their decls in the enumeration type and finish it off.
9246 ENUMTYPE is the type object and VALUES a list of name-value pairs. */
9249 finish_enum (tree enumtype)
9261 integer_type_kind itk;
9262 tree underlying_type = NULL_TREE;
9264 /* We built up the VALUES in reverse order. */
9265 TYPE_VALUES (enumtype) = nreverse (TYPE_VALUES (enumtype));
9267 /* For an enum defined in a template, just set the type of the values;
9268 all further processing is postponed until the template is
9269 instantiated. We need to set the type so that tsubst of a CONST_DECL
9271 if (processing_template_decl)
9273 for (values = TYPE_VALUES (enumtype);
9275 values = TREE_CHAIN (values))
9276 TREE_TYPE (TREE_VALUE (values)) = enumtype;
9277 if (at_function_scope_p ())
9278 add_stmt (build_min (TAG_DEFN, enumtype));
9282 /* Determine the minimum and maximum values of the enumerators. */
9283 if (TYPE_VALUES (enumtype))
9285 minnode = maxnode = NULL_TREE;
9287 for (values = TYPE_VALUES (enumtype);
9289 values = TREE_CHAIN (values))
9291 decl = TREE_VALUE (values);
9293 /* [dcl.enum]: Following the closing brace of an enum-specifier,
9294 each enumerator has the type of its enumeration. Prior to the
9295 closing brace, the type of each enumerator is the type of its
9296 initializing value. */
9297 TREE_TYPE (decl) = enumtype;
9299 /* Update the minimum and maximum values, if appropriate. */
9300 value = DECL_INITIAL (decl);
9301 /* Figure out what the minimum and maximum values of the
9304 minnode = maxnode = value;
9305 else if (tree_int_cst_lt (maxnode, value))
9307 else if (tree_int_cst_lt (value, minnode))
9310 /* Set the TREE_TYPE for the values as well. That's so that when
9311 we call decl_constant_value we get an entity of the right type
9312 (but with the constant value). But first make a copy so we
9313 don't clobber shared INTEGER_CSTs. */
9314 if (TREE_TYPE (value) != enumtype)
9316 value = DECL_INITIAL (decl) = copy_node (value);
9317 TREE_TYPE (value) = enumtype;
9324 If the enumerator-list is empty, the underlying type is as if
9325 the enumeration had a single enumerator with value 0. */
9326 minnode = maxnode = integer_zero_node;
9328 /* Compute the number of bits require to represent all values of the
9329 enumeration. We must do this before the type of MINNODE and
9330 MAXNODE are transformed, since min_precision relies on the
9331 TREE_TYPE of the value it is passed. */
9332 unsignedp = tree_int_cst_sgn (minnode) >= 0;
9333 lowprec = min_precision (minnode, unsignedp);
9334 highprec = min_precision (maxnode, unsignedp);
9335 precision = MAX (lowprec, highprec);
9337 /* Determine the underlying type of the enumeration.
9341 The underlying type of an enumeration is an integral type that
9342 can represent all the enumerator values defined in the
9343 enumeration. It is implementation-defined which integral type is
9344 used as the underlying type for an enumeration except that the
9345 underlying type shall not be larger than int unless the value of
9346 an enumerator cannot fit in an int or unsigned int.
9348 We use "int" or an "unsigned int" as the underlying type, even if
9349 a smaller integral type would work, unless the user has
9350 explicitly requested that we use the smallest possible type. */
9351 for (itk = (flag_short_enums ? itk_char : itk_int);
9355 underlying_type = integer_types[itk];
9356 if (TYPE_PRECISION (underlying_type) >= precision
9357 && TYPE_UNSIGNED (underlying_type) == unsignedp)
9360 if (itk == itk_none)
9364 IF no integral type can represent all the enumerator values, the
9365 enumeration is ill-formed. */
9366 error ("no integral type can represent all of the enumerator values "
9367 "for `%T'", enumtype);
9368 precision = TYPE_PRECISION (long_long_integer_type_node);
9369 underlying_type = integer_types[itk_unsigned_long_long];
9372 /* Compute the minium and maximum values for the type.
9376 For an enumeration where emin is the smallest enumerator and emax
9377 is the largest, the values of the enumeration are the values of the
9378 underlying type in the range bmin to bmax, where bmin and bmax are,
9379 respectively, the smallest and largest values of the smallest bit-
9380 field that can store emin and emax. */
9381 TYPE_PRECISION (enumtype) = precision;
9382 set_min_and_max_values_for_integral_type (enumtype, precision, unsignedp);
9386 The value of sizeof() applied to an enumeration type, an object
9387 of an enumeration type, or an enumerator, is the value of sizeof()
9388 applied to the underlying type. */
9389 TYPE_SIZE (enumtype) = TYPE_SIZE (underlying_type);
9390 TYPE_SIZE_UNIT (enumtype) = TYPE_SIZE_UNIT (underlying_type);
9391 TYPE_MODE (enumtype) = TYPE_MODE (underlying_type);
9392 TYPE_ALIGN (enumtype) = TYPE_ALIGN (underlying_type);
9393 TYPE_USER_ALIGN (enumtype) = TYPE_USER_ALIGN (underlying_type);
9394 TYPE_UNSIGNED (enumtype) = TYPE_UNSIGNED (underlying_type);
9396 /* Convert each of the enumerators to the type of the underlying
9397 type of the enumeration. */
9398 for (values = TYPE_VALUES (enumtype); values; values = TREE_CHAIN (values))
9400 decl = TREE_VALUE (values);
9401 value = perform_implicit_conversion (underlying_type,
9402 DECL_INITIAL (decl));
9403 TREE_TYPE (value) = enumtype;
9404 DECL_INITIAL (decl) = value;
9405 TREE_VALUE (values) = value;
9408 /* Fix up all variant types of this enum type. */
9409 for (t = TYPE_MAIN_VARIANT (enumtype); t; t = TYPE_NEXT_VARIANT (t))
9411 TYPE_VALUES (t) = TYPE_VALUES (enumtype);
9412 TYPE_MIN_VALUE (t) = TYPE_MIN_VALUE (enumtype);
9413 TYPE_MAX_VALUE (t) = TYPE_MAX_VALUE (enumtype);
9414 TYPE_SIZE (t) = TYPE_SIZE (enumtype);
9415 TYPE_SIZE_UNIT (t) = TYPE_SIZE_UNIT (enumtype);
9416 TYPE_MODE (t) = TYPE_MODE (enumtype);
9417 TYPE_PRECISION (t) = TYPE_PRECISION (enumtype);
9418 TYPE_ALIGN (t) = TYPE_ALIGN (enumtype);
9419 TYPE_USER_ALIGN (t) = TYPE_USER_ALIGN (enumtype);
9420 TYPE_UNSIGNED (t) = TYPE_UNSIGNED (enumtype);
9423 /* Finish debugging output for this type. */
9424 rest_of_type_compilation (enumtype, namespace_bindings_p ());
9427 /* Build and install a CONST_DECL for an enumeration constant of the
9428 enumeration type ENUMTYPE whose NAME and VALUE (if any) are provided.
9429 Assignment of sequential values by default is handled here. */
9432 build_enumerator (tree name, tree value, tree enumtype)
9438 /* Remove no-op casts from the value. */
9440 STRIP_TYPE_NOPS (value);
9442 if (! processing_template_decl)
9444 /* Validate and default VALUE. */
9445 if (value != NULL_TREE)
9447 value = decl_constant_value (value);
9449 if (TREE_CODE (value) == INTEGER_CST)
9451 value = perform_integral_promotions (value);
9452 constant_expression_warning (value);
9456 error ("enumerator value for `%D' not integer constant", name);
9461 /* Default based on previous value. */
9462 if (value == NULL_TREE)
9466 if (TYPE_VALUES (enumtype))
9468 /* The next value is the previous value ... */
9469 prev_value = DECL_INITIAL (TREE_VALUE (TYPE_VALUES (enumtype)));
9471 value = cp_build_binary_op (PLUS_EXPR,
9475 if (tree_int_cst_lt (value, prev_value))
9476 error ("overflow in enumeration values at `%D'", name);
9479 value = integer_zero_node;
9482 /* Remove no-op casts from the value. */
9483 STRIP_TYPE_NOPS (value);
9486 /* C++ associates enums with global, function, or class declarations. */
9487 context = current_scope ();
9489 context = current_namespace;
9491 /* Build the actual enumeration constant. Note that the enumeration
9492 constants have the type of their initializers until the
9493 enumeration is complete:
9497 Following the closing brace of an enum-specifier, each enumer-
9498 ator has the type of its enumeration. Prior to the closing
9499 brace, the type of each enumerator is the type of its
9502 In finish_enum we will reset the type. Of course, if we're
9503 processing a template, there may be no value. */
9504 type = value ? TREE_TYPE (value) : NULL_TREE;
9506 if (context && context == current_class_type)
9507 /* This enum declaration is local to the class. We need the full
9508 lang_decl so that we can record DECL_CLASS_CONTEXT, for example. */
9509 decl = build_lang_decl (CONST_DECL, name, type);
9511 /* It's a global enum, or it's local to a function. (Note local to
9512 a function could mean local to a class method. */
9513 decl = build_decl (CONST_DECL, name, type);
9515 DECL_CONTEXT (decl) = FROB_CONTEXT (context);
9516 TREE_CONSTANT (decl) = 1;
9517 TREE_INVARIANT (decl) = 1;
9518 TREE_READONLY (decl) = 1;
9519 DECL_INITIAL (decl) = value;
9521 if (context && context == current_class_type)
9522 /* In something like `struct S { enum E { i = 7 }; };' we put `i'
9523 on the TYPE_FIELDS list for `S'. (That's so that you can say
9524 things like `S::i' later.) */
9525 finish_member_declaration (decl);
9529 /* Add this enumeration constant to the list for this type. */
9530 TYPE_VALUES (enumtype) = tree_cons (name, decl, TYPE_VALUES (enumtype));
9534 /* We're defining DECL. Make sure that it's type is OK. */
9537 check_function_type (tree decl, tree current_function_parms)
9539 tree fntype = TREE_TYPE (decl);
9540 tree return_type = complete_type (TREE_TYPE (fntype));
9542 /* In a function definition, arg types must be complete. */
9543 require_complete_types_for_parms (current_function_parms);
9545 if (!COMPLETE_OR_VOID_TYPE_P (return_type))
9547 error ("return type `%#T' is incomplete", TREE_TYPE (fntype));
9549 /* Make it return void instead, but don't change the
9550 type of the DECL_RESULT, in case we have a named return value. */
9551 if (TREE_CODE (fntype) == METHOD_TYPE)
9553 tree ctype = TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (fntype)));
9555 = build_method_type_directly (ctype,
9557 FUNCTION_ARG_CHAIN (decl));
9561 = build_function_type (void_type_node,
9562 TYPE_ARG_TYPES (TREE_TYPE (decl)));
9564 = build_exception_variant (fntype,
9565 TYPE_RAISES_EXCEPTIONS (fntype));
9568 abstract_virtuals_error (decl, TREE_TYPE (fntype));
9571 /* Create the FUNCTION_DECL for a function definition.
9572 DECLSPECS and DECLARATOR are the parts of the declaration;
9573 they describe the function's name and the type it returns,
9574 but twisted together in a fashion that parallels the syntax of C.
9576 FLAGS is a bitwise or of SF_PRE_PARSED (indicating that the
9577 DECLARATOR is really the DECL for the function we are about to
9578 process and that DECLSPECS should be ignored), SF_INCLASS_INLINE
9579 indicating that the function is an inline defined in-class.
9581 This function creates a binding context for the function body
9582 as well as setting up the FUNCTION_DECL in current_function_decl.
9584 For C++, we must first check whether that datum makes any sense.
9585 For example, "class A local_a(1,2);" means that variable local_a
9586 is an aggregate of type A, which should have a constructor
9587 applied to it with the argument list [1, 2]. */
9590 start_preparsed_function (tree decl1, tree attrs, int flags)
9592 tree ctype = NULL_TREE;
9595 int doing_friend = 0;
9596 struct cp_binding_level *bl;
9597 tree current_function_parms;
9600 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node)) == VOID_TYPE, 160);
9601 my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161);
9603 fntype = TREE_TYPE (decl1);
9604 if (TREE_CODE (fntype) == METHOD_TYPE)
9605 ctype = TYPE_METHOD_BASETYPE (fntype);
9607 /* ISO C++ 11.4/5. A friend function defined in a class is in
9608 the (lexical) scope of the class in which it is defined. */
9609 if (!ctype && DECL_FRIEND_P (decl1))
9611 ctype = DECL_FRIEND_CONTEXT (decl1);
9613 /* CTYPE could be null here if we're dealing with a template;
9614 for example, `inline friend float foo()' inside a template
9615 will have no CTYPE set. */
9616 if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
9622 if (DECL_DECLARED_INLINE_P (decl1)
9623 && lookup_attribute ("noinline", attrs))
9624 warning ("%Jinline function '%D' given attribute noinline", decl1, decl1);
9626 if (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (decl1))
9627 /* This is a constructor, we must ensure that any default args
9628 introduced by this definition are propagated to the clones
9629 now. The clones are used directly in overload resolution. */
9630 adjust_clone_args (decl1);
9632 /* Sometimes we don't notice that a function is a static member, and
9633 build a METHOD_TYPE for it. Fix that up now. */
9634 if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1)
9635 && TREE_CODE (TREE_TYPE (decl1)) == METHOD_TYPE)
9637 revert_static_member_fn (decl1);
9641 /* Set up current_class_type, and enter the scope of the class, if
9644 push_nested_class (ctype);
9645 else if (DECL_STATIC_FUNCTION_P (decl1))
9646 push_nested_class (DECL_CONTEXT (decl1));
9648 /* Now that we have entered the scope of the class, we must restore
9649 the bindings for any template parameters surrounding DECL1, if it
9650 is an inline member template. (Order is important; consider the
9651 case where a template parameter has the same name as a field of
9652 the class.) It is not until after this point that
9653 PROCESSING_TEMPLATE_DECL is guaranteed to be set up correctly. */
9654 if (flags & SF_INCLASS_INLINE)
9655 maybe_begin_member_template_processing (decl1);
9657 /* Effective C++ rule 15. */
9659 && DECL_OVERLOADED_OPERATOR_P (decl1) == NOP_EXPR
9660 && TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE)
9661 warning ("`operator=' should return a reference to `*this'");
9663 /* Make the init_value nonzero so pushdecl knows this is not tentative.
9664 error_mark_node is replaced below (in poplevel) with the BLOCK. */
9665 if (!DECL_INITIAL (decl1))
9666 DECL_INITIAL (decl1) = error_mark_node;
9668 /* This function exists in static storage.
9669 (This does not mean `static' in the C sense!) */
9670 TREE_STATIC (decl1) = 1;
9672 /* We must call push_template_decl after current_class_type is set
9673 up. (If we are processing inline definitions after exiting a
9674 class scope, current_class_type will be NULL_TREE until set above
9675 by push_nested_class.) */
9676 if (processing_template_decl)
9677 decl1 = push_template_decl (decl1);
9679 /* We are now in the scope of the function being defined. */
9680 current_function_decl = decl1;
9682 /* Save the parm names or decls from this function's declarator
9683 where store_parm_decls will find them. */
9684 current_function_parms = DECL_ARGUMENTS (decl1);
9686 /* Make sure the parameter and return types are reasonable. When
9687 you declare a function, these types can be incomplete, but they
9688 must be complete when you define the function. */
9689 if (! processing_template_decl)
9690 check_function_type (decl1, current_function_parms);
9692 /* Build the return declaration for the function. */
9693 restype = TREE_TYPE (fntype);
9694 /* Promote the value to int before returning it. */
9695 if (c_promoting_integer_type_p (restype))
9696 restype = type_promotes_to (restype);
9697 if (DECL_RESULT (decl1) == NULL_TREE)
9700 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype));
9701 c_apply_type_quals_to_decl (cp_type_quals (restype),
9702 DECL_RESULT (decl1));
9705 /* Initialize RTL machinery. We cannot do this until
9706 CURRENT_FUNCTION_DECL and DECL_RESULT are set up. We do this
9707 even when processing a template; this is how we get
9708 CFUN set up, and our per-function variables initialized.
9709 FIXME factor out the non-RTL stuff. */
9710 bl = current_binding_level;
9711 allocate_struct_function (decl1);
9712 current_binding_level = bl;
9714 /* Even though we're inside a function body, we still don't want to
9715 call expand_expr to calculate the size of a variable-sized array.
9716 We haven't necessarily assigned RTL to all variables yet, so it's
9717 not safe to try to expand expressions involving them. */
9718 cfun->x_dont_save_pending_sizes_p = 1;
9720 /* Start the statement-tree, start the tree now. */
9721 DECL_SAVED_TREE (decl1) = push_stmt_list ();
9723 /* Let the user know we're compiling this function. */
9724 announce_function (decl1);
9726 /* Record the decl so that the function name is defined.
9727 If we already have a decl for this name, and it is a FUNCTION_DECL,
9728 use the old decl. */
9729 if (!processing_template_decl && !(flags & SF_PRE_PARSED))
9731 /* A specialization is not used to guide overload resolution. */
9732 if (!DECL_FUNCTION_MEMBER_P (decl1)
9733 && !(DECL_USE_TEMPLATE (decl1) &&
9734 PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (decl1))))
9736 tree olddecl = pushdecl (decl1);
9738 if (olddecl == error_mark_node)
9739 /* If something went wrong when registering the declaration,
9740 use DECL1; we have to have a FUNCTION_DECL to use when
9741 parsing the body of the function. */
9744 /* Otherwise, OLDDECL is either a previous declaration of
9745 the same function or DECL1 itself. */
9750 /* We need to set the DECL_CONTEXT. */
9751 if (!DECL_CONTEXT (decl1) && DECL_TEMPLATE_INFO (decl1))
9752 DECL_CONTEXT (decl1) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1));
9753 /* And make sure we have enough default args. */
9754 check_default_args (decl1);
9756 fntype = TREE_TYPE (decl1);
9759 /* Reset these in case the call to pushdecl changed them. */
9760 current_function_decl = decl1;
9763 /* If we are (erroneously) defining a function that we have already
9764 defined before, wipe out what we knew before. */
9765 if (!DECL_PENDING_INLINE_P (decl1))
9766 DECL_SAVED_FUNCTION_DATA (decl1) = NULL;
9768 if (ctype && !doing_friend && !DECL_STATIC_FUNCTION_P (decl1))
9770 /* We know that this was set up by `grokclassfn'. We do not
9771 wait until `store_parm_decls', since evil parse errors may
9772 never get us to that point. Here we keep the consistency
9773 between `current_class_type' and `current_class_ptr'. */
9774 tree t = DECL_ARGUMENTS (decl1);
9776 my_friendly_assert (t != NULL_TREE && TREE_CODE (t) == PARM_DECL,
9778 my_friendly_assert (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE,
9781 cp_function_chain->x_current_class_ref
9782 = build_indirect_ref (t, NULL);
9783 cp_function_chain->x_current_class_ptr = t;
9785 /* Constructors and destructors need to know whether they're "in
9786 charge" of initializing virtual base classes. */
9788 if (DECL_HAS_IN_CHARGE_PARM_P (decl1))
9790 current_in_charge_parm = t;
9793 if (DECL_HAS_VTT_PARM_P (decl1))
9795 if (DECL_NAME (t) != vtt_parm_identifier)
9797 current_vtt_parm = t;
9801 if (DECL_INTERFACE_KNOWN (decl1))
9803 tree ctx = decl_function_context (decl1);
9805 if (DECL_NOT_REALLY_EXTERN (decl1))
9806 DECL_EXTERNAL (decl1) = 0;
9808 if (ctx != NULL_TREE && DECL_DECLARED_INLINE_P (ctx)
9809 && TREE_PUBLIC (ctx))
9810 /* This is a function in a local class in an extern inline
9812 comdat_linkage (decl1);
9814 /* If this function belongs to an interface, it is public.
9815 If it belongs to someone else's interface, it is also external.
9816 This only affects inlines and template instantiations. */
9817 else if (interface_unknown == 0
9818 && ! DECL_TEMPLATE_INSTANTIATION (decl1))
9820 if (DECL_DECLARED_INLINE_P (decl1)
9821 || DECL_TEMPLATE_INSTANTIATION (decl1)
9822 || processing_template_decl)
9824 DECL_EXTERNAL (decl1)
9826 || (DECL_DECLARED_INLINE_P (decl1)
9827 && ! flag_implement_inlines
9828 && !DECL_VINDEX (decl1)));
9830 /* For WIN32 we also want to put these in linkonce sections. */
9831 maybe_make_one_only (decl1);
9834 DECL_EXTERNAL (decl1) = 0;
9835 DECL_NOT_REALLY_EXTERN (decl1) = 0;
9836 DECL_INTERFACE_KNOWN (decl1) = 1;
9838 else if (interface_unknown && interface_only
9839 && ! DECL_TEMPLATE_INSTANTIATION (decl1))
9841 /* If MULTIPLE_SYMBOL_SPACES is defined and we saw a #pragma
9842 interface, we will have interface_only set but not
9843 interface_known. In that case, we don't want to use the normal
9844 heuristics because someone will supply a #pragma implementation
9845 elsewhere, and deducing it here would produce a conflict. */
9846 comdat_linkage (decl1);
9847 DECL_EXTERNAL (decl1) = 0;
9848 DECL_INTERFACE_KNOWN (decl1) = 1;
9849 DECL_DEFER_OUTPUT (decl1) = 1;
9853 /* This is a definition, not a reference.
9854 So clear DECL_EXTERNAL. */
9855 DECL_EXTERNAL (decl1) = 0;
9857 if ((DECL_DECLARED_INLINE_P (decl1)
9858 || DECL_TEMPLATE_INSTANTIATION (decl1))
9859 && ! DECL_INTERFACE_KNOWN (decl1)
9860 /* Don't try to defer nested functions for now. */
9861 && ! decl_function_context (decl1))
9862 DECL_DEFER_OUTPUT (decl1) = 1;
9864 DECL_INTERFACE_KNOWN (decl1) = 1;
9867 begin_scope (sk_function_parms, decl1);
9871 if (DECL_DESTRUCTOR_P (decl1))
9873 dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
9874 DECL_CONTEXT (dtor_label) = current_function_decl;
9877 start_fname_decls ();
9879 store_parm_decls (current_function_parms);
9883 /* Like start_preparsed_function, except that instead of a
9884 FUNCTION_DECL, this function takes DECLSPECS and DECLARATOR.
9886 Returns 1 on success. If the DECLARATOR is not suitable for a function
9887 (it defines a datum instead), we return 0, which tells
9888 yyparse to report a parse error. */
9891 start_function (cp_decl_specifier_seq *declspecs,
9892 const cp_declarator *declarator,
9897 if (have_extern_spec)
9899 declspecs->storage_class = sc_extern;
9900 /* This should only be done once on the outermost decl. */
9901 have_extern_spec = false;
9904 decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, &attrs);
9905 /* If the declarator is not suitable for a function definition,
9906 cause a syntax error. */
9907 if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL)
9910 cplus_decl_attributes (&decl1, attrs, 0);
9912 /* If #pragma weak was used, mark the decl weak now. */
9913 if (global_scope_p (current_binding_level))
9914 maybe_apply_pragma_weak (decl1);
9916 if (DECL_MAIN_P (decl1))
9918 /* If this doesn't return integer_type, or a typedef to
9919 integer_type, complain. */
9920 if (!same_type_p (TREE_TYPE (TREE_TYPE (decl1)), integer_type_node))
9922 if (pedantic || warn_return_type)
9923 pedwarn ("return type for `main' changed to `int'");
9924 TREE_TYPE (decl1) = default_function_type;
9928 start_preparsed_function (decl1, attrs, /*flags=*/SF_DEFAULT);
9933 /* Store the parameter declarations into the current function declaration.
9934 This is called after parsing the parameter declarations, before
9935 digesting the body of the function.
9937 Also install to binding contour return value identifier, if any. */
9940 store_parm_decls (tree current_function_parms)
9942 tree fndecl = current_function_decl;
9945 /* This is a chain of any other decls that came in among the parm
9946 declarations. If a parm is declared with enum {foo, bar} x;
9947 then CONST_DECLs for foo and bar are put here. */
9948 tree nonparms = NULL_TREE;
9950 if (current_function_parms)
9952 /* This case is when the function was defined with an ANSI prototype.
9953 The parms already have decls, so we need not do anything here
9954 except record them as in effect
9955 and complain if any redundant old-style parm decls were written. */
9957 tree specparms = current_function_parms;
9960 /* Must clear this because it might contain TYPE_DECLs declared
9962 current_binding_level->names = NULL;
9964 /* If we're doing semantic analysis, then we'll call pushdecl
9965 for each of these. We must do them in reverse order so that
9966 they end in the correct forward order. */
9967 specparms = nreverse (specparms);
9969 for (parm = specparms; parm; parm = next)
9971 next = TREE_CHAIN (parm);
9972 if (TREE_CODE (parm) == PARM_DECL)
9974 if (DECL_NAME (parm) == NULL_TREE
9975 || TREE_CODE (parm) != VOID_TYPE)
9978 error ("parameter `%D' declared void", parm);
9982 /* If we find an enum constant or a type tag,
9983 put it aside for the moment. */
9984 TREE_CHAIN (parm) = NULL_TREE;
9985 nonparms = chainon (nonparms, parm);
9989 /* Get the decls in their original chain order and record in the
9990 function. This is all and only the PARM_DECLs that were
9991 pushed into scope by the loop above. */
9992 DECL_ARGUMENTS (fndecl) = getdecls ();
9995 DECL_ARGUMENTS (fndecl) = NULL_TREE;
9997 /* Now store the final chain of decls for the arguments
9998 as the decl-chain of the current lexical scope.
9999 Put the enumerators in as well, at the front so that
10000 DECL_ARGUMENTS is not modified. */
10001 current_binding_level->names = chainon (nonparms, DECL_ARGUMENTS (fndecl));
10003 /* Do the starting of the exception specifications, if we have any. */
10004 if (flag_exceptions && !processing_template_decl
10005 && flag_enforce_eh_specs
10006 && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
10007 current_eh_spec_block = begin_eh_spec_block ();
10011 /* We have finished doing semantic analysis on DECL, but have not yet
10012 generated RTL for its body. Save away our current state, so that
10013 when we want to generate RTL later we know what to do. */
10016 save_function_data (tree decl)
10018 struct language_function *f;
10020 /* Save the language-specific per-function data so that we can
10021 get it back when we really expand this function. */
10022 my_friendly_assert (!DECL_PENDING_INLINE_P (decl),
10026 f = ggc_alloc (sizeof (struct language_function));
10027 memcpy (f, cp_function_chain, sizeof (struct language_function));
10028 DECL_SAVED_FUNCTION_DATA (decl) = f;
10030 /* Clear out the bits we don't need. */
10031 f->base.x_stmt_tree.x_cur_stmt_list = NULL_TREE;
10032 f->x_named_label_uses = NULL;
10033 f->bindings = NULL;
10034 f->x_local_names = NULL;
10037 /* Add a note to mark the beginning of the main body of the constructor.
10038 This is used to set up the data structures for the cleanup regions for
10039 fully-constructed bases and members. */
10042 begin_constructor_body (void)
10046 /* Add a note to mark the end of the main body of the constructor. This is
10047 used to end the cleanup regions for fully-constructed bases and
10051 finish_constructor_body (void)
10055 /* Do all the processing for the beginning of a destructor; set up the
10056 vtable pointers and cleanups for bases and members. */
10059 begin_destructor_body (void)
10062 tree compound_stmt;
10064 /* If the dtor is empty, and we know there is not any possible
10065 way we could use any vtable entries, before they are possibly
10066 set by a base class dtor, we don't have to setup the vtables,
10067 as we know that any base class dtor will set up any vtables
10068 it needs. We avoid MI, because one base class dtor can do a
10069 virtual dispatch to an overridden function that would need to
10070 have a non-related vtable set up, we cannot avoid setting up
10071 vtables in that case. We could change this to see if there
10072 is just one vtable.
10074 ??? In the destructor for a class, the vtables are set
10075 appropriately for that class. There will be no non-related
10076 vtables. jason 2001-12-11. */
10077 if_stmt = begin_if_stmt ();
10079 /* If it is not safe to avoid setting up the vtables, then
10080 someone will change the condition to be boolean_true_node.
10081 (Actually, for now, we do not have code to set the condition
10082 appropriately, so we just assume that we always need to
10083 initialize the vtables.) */
10084 finish_if_stmt_cond (boolean_true_node, if_stmt);
10086 compound_stmt = begin_compound_stmt (0);
10088 /* Make all virtual function table pointers in non-virtual base
10089 classes point to CURRENT_CLASS_TYPE's virtual function
10091 initialize_vtbl_ptrs (current_class_ptr);
10093 finish_compound_stmt (compound_stmt);
10094 finish_then_clause (if_stmt);
10095 finish_if_stmt (if_stmt);
10097 /* And insert cleanups for our bases and members so that they
10098 will be properly destroyed if we throw. */
10099 push_base_cleanups ();
10102 /* At the end of every destructor we generate code to delete the object if
10103 necessary. Do that now. */
10106 finish_destructor_body (void)
10110 /* Any return from a destructor will end up here; that way all base
10111 and member cleanups will be run when the function returns. */
10112 add_stmt (build_stmt (LABEL_EXPR, dtor_label));
10114 /* In a virtual destructor, we must call delete. */
10115 if (DECL_VIRTUAL_P (current_function_decl))
10118 tree virtual_size = cxx_sizeof (current_class_type);
10122 At the point of definition of a virtual destructor (including
10123 an implicit definition), non-placement operator delete shall
10124 be looked up in the scope of the destructor's class and if
10125 found shall be accessible and unambiguous. */
10126 exprstmt = build_op_delete_call
10127 (DELETE_EXPR, current_class_ptr, virtual_size,
10128 /*global_p=*/false, NULL_TREE);
10130 if_stmt = begin_if_stmt ();
10131 finish_if_stmt_cond (build (BIT_AND_EXPR, integer_type_node,
10132 current_in_charge_parm,
10135 finish_expr_stmt (exprstmt);
10136 finish_then_clause (if_stmt);
10137 finish_if_stmt (if_stmt);
10141 /* Do the necessary processing for the beginning of a function body, which
10142 in this case includes member-initializers, but not the catch clauses of
10143 a function-try-block. Currently, this means opening a binding level
10144 for the member-initializers (in a ctor) and member cleanups (in a dtor).
10145 In other functions, this isn't necessary, but it doesn't hurt. */
10148 begin_function_body (void)
10152 if (processing_template_decl)
10153 /* Do nothing now. */;
10155 /* Always keep the BLOCK node associated with the outermost pair of
10156 curly braces of a function. These are needed for correct
10157 operation of dwarfout.c. */
10158 keep_next_level (true);
10160 stmt = begin_compound_stmt (BCS_FN_BODY);
10162 if (processing_template_decl)
10163 /* Do nothing now. */;
10164 else if (DECL_CONSTRUCTOR_P (current_function_decl))
10165 begin_constructor_body ();
10166 else if (DECL_DESTRUCTOR_P (current_function_decl))
10167 begin_destructor_body ();
10172 /* Do the processing for the end of a function body. Currently, this means
10173 closing out the cleanups for fully-constructed bases and members, and in
10174 the case of the destructor, deleting the object if desired. Again, this
10175 is only meaningful for [cd]tors, since they are the only functions where
10176 there is a significant distinction between the main body and any
10177 function catch clauses. Handling, say, main() return semantics here
10178 would be wrong, as flowing off the end of a function catch clause for
10179 main() would also need to return 0. */
10182 finish_function_body (tree compstmt)
10184 /* Close the block. */
10185 finish_compound_stmt (compstmt);
10187 if (processing_template_decl)
10188 /* Do nothing now. */;
10189 else if (DECL_CONSTRUCTOR_P (current_function_decl))
10190 finish_constructor_body ();
10191 else if (DECL_DESTRUCTOR_P (current_function_decl))
10192 finish_destructor_body ();
10195 /* Finish up a function declaration and compile that function
10196 all the way to assembler language output. The free the storage
10197 for the function definition.
10199 FLAGS is a bitwise or of the following values:
10201 We just finished processing the body of an in-class inline
10202 function definition. (This processing will have taken place
10203 after the class definition is complete.) */
10206 finish_function (int flags)
10208 tree fndecl = current_function_decl;
10209 tree fntype, ctype = NULL_TREE;
10210 int inclass_inline = (flags & 2) != 0;
10213 /* When we get some parse errors, we can end up without a
10214 current_function_decl, so cope. */
10215 if (fndecl == NULL_TREE)
10216 return error_mark_node;
10218 if (DECL_NONSTATIC_MEMBER_FUNCTION_P (fndecl)
10219 && DECL_VIRTUAL_P (fndecl)
10220 && !processing_template_decl)
10222 tree fnclass = DECL_CONTEXT (fndecl);
10223 if (fndecl == CLASSTYPE_KEY_METHOD (fnclass))
10224 keyed_classes = tree_cons (NULL_TREE, fnclass, keyed_classes);
10227 nested = function_depth > 1;
10228 fntype = TREE_TYPE (fndecl);
10230 /* TREE_READONLY (fndecl) = 1;
10231 This caused &foo to be of type ptr-to-const-function
10232 which then got a warning when stored in a ptr-to-function variable. */
10234 my_friendly_assert (building_stmt_tree (), 20000911);
10236 /* For a cloned function, we've already got all the code we need;
10237 there's no need to add any extra bits. */
10238 if (!DECL_CLONED_FUNCTION_P (fndecl))
10240 if (DECL_MAIN_P (current_function_decl))
10242 /* Make it so that `main' always returns 0 by default. */
10244 finish_return_stmt (integer_one_node);
10246 finish_return_stmt (integer_zero_node);
10250 /* Finish dealing with exception specifiers. */
10251 if (flag_exceptions && !processing_template_decl
10252 && flag_enforce_eh_specs
10253 && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
10254 finish_eh_spec_block (TYPE_RAISES_EXCEPTIONS
10255 (TREE_TYPE (current_function_decl)),
10256 current_eh_spec_block);
10259 /* If we're saving up tree structure, tie off the function now. */
10260 DECL_SAVED_TREE (fndecl) = pop_stmt_list (DECL_SAVED_TREE (fndecl));
10262 finish_fname_decls ();
10264 /* If this function can't throw any exceptions, remember that. */
10265 if (!processing_template_decl
10266 && !cp_function_chain->can_throw
10267 && !flag_non_call_exceptions)
10268 TREE_NOTHROW (fndecl) = 1;
10270 /* This must come after expand_function_end because cleanups might
10271 have declarations (from inline functions) that need to go into
10272 this function's blocks. */
10274 /* If the current binding level isn't the outermost binding level
10275 for this function, either there is a bug, or we have experienced
10276 syntax errors and the statement tree is malformed. */
10277 if (current_binding_level->kind != sk_function_parms)
10279 /* Make sure we have already experienced errors. */
10280 if (errorcount == 0)
10283 /* Throw away the broken statement tree and extra binding
10285 DECL_SAVED_TREE (fndecl) = alloc_stmt_list ();
10287 while (current_binding_level->kind != sk_function_parms)
10289 if (current_binding_level->kind == sk_class)
10290 pop_nested_class ();
10292 poplevel (0, 0, 0);
10295 poplevel (1, 0, 1);
10297 /* Statements should always be full-expressions at the outermost set
10298 of curly braces for a function. */
10299 my_friendly_assert (stmts_are_full_exprs_p (), 19990831);
10301 /* Set up the named return value optimization, if we can. Candidate
10302 variables are selected in check_return_value. */
10303 if (current_function_return_value)
10305 tree r = current_function_return_value;
10308 if (r != error_mark_node
10309 /* This is only worth doing for fns that return in memory--and
10310 simpler, since we don't have to worry about promoted modes. */
10311 && aggregate_value_p (TREE_TYPE (TREE_TYPE (fndecl)), fndecl)
10312 /* Only allow this for variables declared in the outer scope of
10313 the function so we know that their lifetime always ends with a
10314 return; see g++.dg/opt/nrv6.C. We could be more flexible if
10315 we were to do this optimization in tree-ssa. */
10316 && (outer = BLOCK_SUBBLOCKS (DECL_INITIAL (fndecl)))
10317 /* Skip the artificial function body block. */
10318 && (outer = BLOCK_SUBBLOCKS (outer))
10319 && chain_member (r, BLOCK_VARS (outer)))
10320 finalize_nrv (&DECL_SAVED_TREE (fndecl), r, DECL_RESULT (fndecl));
10322 current_function_return_value = NULL_TREE;
10325 /* Remember that we were in class scope. */
10326 if (current_class_name)
10327 ctype = current_class_type;
10329 /* Must mark the RESULT_DECL as being in this function. */
10330 DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
10332 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
10333 to the FUNCTION_DECL node itself. */
10334 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
10336 /* Save away current state, if appropriate. */
10337 if (!processing_template_decl)
10338 save_function_data (fndecl);
10340 /* Complain if there's just no return statement. */
10341 if (warn_return_type
10342 && TREE_CODE (TREE_TYPE (fntype)) != VOID_TYPE
10343 && !dependent_type_p (TREE_TYPE (fntype))
10344 && !current_function_returns_value && !current_function_returns_null
10345 /* Don't complain if we abort or throw. */
10346 && !current_function_returns_abnormally
10347 && !DECL_NAME (DECL_RESULT (fndecl))
10348 /* Normally, with -Wreturn-type, flow will complain. Unless we're an
10349 inline function, as we might never be compiled separately. */
10350 && (DECL_INLINE (fndecl) || processing_template_decl))
10351 warning ("no return statement in function returning non-void");
10353 /* Store the end of the function, so that we get good line number
10354 info for the epilogue. */
10355 cfun->function_end_locus = input_location;
10357 /* Genericize before inlining. */
10358 if (!processing_template_decl)
10360 cp_genericize (fndecl);
10362 /* Handle attribute((warn_unused_result)). Relies on gimple input. */
10363 c_warn_unused_result (&DECL_SAVED_TREE (fndecl));
10366 /* We're leaving the context of this function, so zap cfun. It's still in
10367 DECL_STRUCT_FUNCTION, and we'll restore it in tree_rest_of_compilation. */
10369 current_function_decl = NULL;
10371 /* If this is an in-class inline definition, we may have to pop the
10372 bindings for the template parameters that we added in
10373 maybe_begin_member_template_processing when start_function was
10375 if (inclass_inline)
10376 maybe_end_member_template_processing ();
10378 /* Leave the scope of the class. */
10380 pop_nested_class ();
10386 /* Let the error reporting routines know that we're outside a
10387 function. For a nested function, this value is used in
10388 cxx_pop_function_context and then reset via pop_function_context. */
10389 current_function_decl = NULL_TREE;
10394 /* Create the FUNCTION_DECL for a function definition.
10395 DECLSPECS and DECLARATOR are the parts of the declaration;
10396 they describe the return type and the name of the function,
10397 but twisted together in a fashion that parallels the syntax of C.
10399 This function creates a binding context for the function body
10400 as well as setting up the FUNCTION_DECL in current_function_decl.
10402 Returns a FUNCTION_DECL on success.
10404 If the DECLARATOR is not suitable for a function (it defines a datum
10405 instead), we return 0, which tells yyparse to report a parse error.
10407 May return void_type_node indicating that this method is actually
10408 a friend. See grokfield for more details.
10410 Came here with a `.pushlevel' .
10412 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
10413 CHANGES TO CODE IN `grokfield'. */
10416 start_method (cp_decl_specifier_seq *declspecs,
10417 const cp_declarator *declarator, tree attrlist)
10419 tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
10422 if (fndecl == error_mark_node)
10423 return error_mark_node;
10425 if (fndecl == NULL || TREE_CODE (fndecl) != FUNCTION_DECL)
10427 error ("invalid member function declaration");
10428 return error_mark_node;
10432 cplus_decl_attributes (&fndecl, attrlist, 0);
10434 /* Pass friends other than inline friend functions back. */
10435 if (fndecl == void_type_node)
10438 if (DECL_IN_AGGR_P (fndecl))
10440 if (DECL_CONTEXT (fndecl)
10441 && TREE_CODE( DECL_CONTEXT (fndecl)) != NAMESPACE_DECL)
10442 error ("`%D' is already defined in class `%T'", fndecl,
10443 DECL_CONTEXT (fndecl));
10444 return void_type_node;
10447 check_template_shadow (fndecl);
10449 DECL_DECLARED_INLINE_P (fndecl) = 1;
10450 if (flag_default_inline)
10451 DECL_INLINE (fndecl) = 1;
10453 /* We process method specializations in finish_struct_1. */
10454 if (processing_template_decl && !DECL_TEMPLATE_SPECIALIZATION (fndecl))
10456 fndecl = push_template_decl (fndecl);
10457 if (fndecl == error_mark_node)
10461 if (! DECL_FRIEND_P (fndecl))
10463 if (TREE_CHAIN (fndecl))
10465 fndecl = copy_node (fndecl);
10466 TREE_CHAIN (fndecl) = NULL_TREE;
10468 grok_special_member_properties (fndecl);
10471 cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0);
10473 /* Make a place for the parms. */
10474 begin_scope (sk_function_parms, fndecl);
10476 DECL_IN_AGGR_P (fndecl) = 1;
10480 /* Go through the motions of finishing a function definition.
10481 We don't compile this method until after the whole class has
10484 FINISH_METHOD must return something that looks as though it
10485 came from GROKFIELD (since we are defining a method, after all).
10487 This is called after parsing the body of the function definition.
10488 STMTS is the chain of statements that makes up the function body.
10490 DECL is the ..._DECL that `start_method' provided. */
10493 finish_method (tree decl)
10495 tree fndecl = decl;
10500 if (decl == void_type_node)
10503 old_initial = DECL_INITIAL (fndecl);
10505 /* Undo the level for the parms (from start_method).
10506 This is like poplevel, but it causes nothing to be
10507 saved. Saving information here confuses symbol-table
10508 output routines. Besides, this information will
10509 be correctly output when this method is actually
10512 /* Clear out the meanings of the local variables of this level;
10513 also record in each decl which block it belongs to. */
10515 for (link = current_binding_level->names; link; link = TREE_CHAIN (link))
10517 if (DECL_NAME (link) != NULL_TREE)
10518 pop_binding (DECL_NAME (link), link);
10519 my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163);
10520 DECL_CONTEXT (link) = NULL_TREE;
10523 poplevel (0, 0, 0);
10525 DECL_INITIAL (fndecl) = old_initial;
10527 /* We used to check if the context of FNDECL was different from
10528 current_class_type as another way to get inside here. This didn't work
10529 for String.cc in libg++. */
10530 if (DECL_FRIEND_P (fndecl))
10532 CLASSTYPE_INLINE_FRIENDS (current_class_type)
10533 = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type));
10534 decl = void_type_node;
10541 /* VAR is a VAR_DECL. If its type is incomplete, remember VAR so that
10542 we can lay it out later, when and if its type becomes complete. */
10545 maybe_register_incomplete_var (tree var)
10547 my_friendly_assert (TREE_CODE (var) == VAR_DECL, 20020406);
10549 /* Keep track of variables with incomplete types. */
10550 if (!processing_template_decl && TREE_TYPE (var) != error_mark_node
10551 && DECL_EXTERNAL (var))
10553 tree inner_type = TREE_TYPE (var);
10555 while (TREE_CODE (inner_type) == ARRAY_TYPE)
10556 inner_type = TREE_TYPE (inner_type);
10557 inner_type = TYPE_MAIN_VARIANT (inner_type);
10559 if ((!COMPLETE_TYPE_P (inner_type) && CLASS_TYPE_P (inner_type))
10560 /* RTTI TD entries are created while defining the type_info. */
10561 || (TYPE_LANG_SPECIFIC (inner_type)
10562 && TYPE_BEING_DEFINED (inner_type)))
10563 incomplete_vars = tree_cons (inner_type, var, incomplete_vars);
10567 /* Called when a class type (given by TYPE) is defined. If there are
10568 any existing VAR_DECLs whose type hsa been completed by this
10569 declaration, update them now. */
10572 complete_vars (tree type)
10574 tree *list = &incomplete_vars;
10576 my_friendly_assert (CLASS_TYPE_P (type), 20020406);
10579 if (same_type_p (type, TREE_PURPOSE (*list)))
10581 tree var = TREE_VALUE (*list);
10582 /* Complete the type of the variable. The VAR_DECL itself
10583 will be laid out in expand_expr. */
10584 complete_type (TREE_TYPE (var));
10585 /* Remove this entry from the list. */
10586 *list = TREE_CHAIN (*list);
10589 list = &TREE_CHAIN (*list);
10592 /* Check for pending declarations which may have abstract type. */
10593 complete_type_check_abstract (type);
10596 /* If DECL is of a type which needs a cleanup, build that cleanup
10600 cxx_maybe_build_cleanup (tree decl)
10602 tree type = TREE_TYPE (decl);
10604 if (type != error_mark_node && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type))
10606 int flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
10609 if (TREE_CODE (type) == ARRAY_TYPE)
10613 cxx_mark_addressable (decl);
10614 rval = build_unary_op (ADDR_EXPR, decl, 0);
10617 /* Optimize for space over speed here. */
10618 if (! TYPE_USES_VIRTUAL_BASECLASSES (type)
10619 || flag_expensive_optimizations)
10620 flags |= LOOKUP_NONVIRTUAL;
10622 rval = build_delete (TREE_TYPE (rval), rval,
10623 sfk_complete_destructor, flags, 0);
10625 if (TYPE_USES_VIRTUAL_BASECLASSES (type)
10626 && ! TYPE_HAS_DESTRUCTOR (type))
10627 rval = build_compound_expr (rval, build_vbase_delete (type, decl));
10634 /* When a stmt has been parsed, this function is called. */
10641 /* DECL was originally constructed as a non-static member function,
10642 but turned out to be static. Update it accordingly. */
10645 revert_static_member_fn (tree decl)
10648 tree function = TREE_TYPE (decl);
10649 tree args = TYPE_ARG_TYPES (function);
10651 if (cp_type_quals (TREE_TYPE (TREE_VALUE (args)))
10652 != TYPE_UNQUALIFIED)
10653 error ("static member function `%#D' declared with type qualifiers",
10656 args = TREE_CHAIN (args);
10657 tmp = build_function_type (TREE_TYPE (function), args);
10658 tmp = build_qualified_type (tmp, cp_type_quals (function));
10659 tmp = build_exception_variant (tmp,
10660 TYPE_RAISES_EXCEPTIONS (function));
10661 TREE_TYPE (decl) = tmp;
10662 if (DECL_ARGUMENTS (decl))
10663 DECL_ARGUMENTS (decl) = TREE_CHAIN (DECL_ARGUMENTS (decl));
10664 DECL_STATIC_FUNCTION_P (decl) = 1;
10667 /* Initialize the variables used during compilation of a C++
10671 cxx_push_function_context (struct function * f)
10673 struct language_function *p
10674 = ggc_alloc_cleared (sizeof (struct language_function));
10677 /* Whenever we start a new function, we destroy temporaries in the
10679 current_stmt_tree ()->stmts_are_full_exprs_p = 1;
10685 if (DECL_SAVED_FUNCTION_DATA (fn))
10687 /* If we already parsed this function, and we're just expanding it
10688 now, restore saved state. */
10689 *cp_function_chain = *DECL_SAVED_FUNCTION_DATA (fn);
10691 /* We don't need the saved data anymore. Unless this is an inline
10692 function; we need the named return value info for
10693 cp_copy_res_decl_for_inlining. */
10694 if (! DECL_INLINE (fn))
10695 DECL_SAVED_FUNCTION_DATA (fn) = NULL;
10700 /* Free the language-specific parts of F, now that we've finished
10701 compiling the function. */
10704 cxx_pop_function_context (struct function * f)
10709 /* Return which tree structure is used by T, or TS_CP_GENERIC if T is
10710 one of the language-independent trees. */
10712 enum cp_tree_node_structure_enum
10713 cp_tree_node_structure (union lang_tree_node * t)
10715 switch (TREE_CODE (&t->generic))
10717 case DEFAULT_ARG: return TS_CP_DEFAULT_ARG;
10718 case IDENTIFIER_NODE: return TS_CP_IDENTIFIER;
10719 case OVERLOAD: return TS_CP_OVERLOAD;
10720 case TEMPLATE_PARM_INDEX: return TS_CP_TPI;
10721 case PTRMEM_CST: return TS_CP_PTRMEM;
10722 case BASELINK: return TS_CP_BASELINK;
10723 default: return TS_CP_GENERIC;
10727 /* Build the void_list_node (void_type_node having been created). */
10729 build_void_list_node (void)
10731 tree t = build_tree_list (NULL_TREE, void_type_node);
10736 cp_missing_noreturn_ok_p (tree decl)
10738 /* A missing noreturn is ok for the `main' function. */
10739 return DECL_MAIN_P (decl);
10742 #include "gt-cp-decl.h"
10743 #include "gtype-cp.h"