1 /* Process declarations and variables for C compiler.
2 Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001 Free Software Foundation, Inc.
4 Contributed by Michael Tiemann (tiemann@cygnus.com)
6 This file is part of GNU CC.
8 GNU CC 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 GNU CC 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 GNU CC; 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. */
38 #include "tree-inline.h"
50 extern const struct attribute_spec
*lang_attribute_table
;
52 #ifndef BOOL_TYPE_SIZE
53 /* `bool' has size and alignment `1', on all platforms. */
54 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
57 static tree grokparms
PARAMS ((tree
));
58 static const char *redeclaration_error_message
PARAMS ((tree
, tree
));
60 static void push_binding_level
PARAMS ((struct binding_level
*, int,
62 static void pop_binding_level
PARAMS ((void));
63 static void suspend_binding_level
PARAMS ((void));
64 static void resume_binding_level
PARAMS ((struct binding_level
*));
65 static struct binding_level
*make_binding_level
PARAMS ((void));
66 static void declare_namespace_level
PARAMS ((void));
67 static int decl_jump_unsafe
PARAMS ((tree
));
68 static void storedecls
PARAMS ((tree
));
69 static void require_complete_types_for_parms
PARAMS ((tree
));
70 static int ambi_op_p
PARAMS ((enum tree_code
));
71 static int unary_op_p
PARAMS ((enum tree_code
));
72 static tree store_bindings
PARAMS ((tree
, tree
));
73 static tree lookup_tag_reverse
PARAMS ((tree
, tree
));
74 static tree obscure_complex_init
PARAMS ((tree
, tree
));
75 static tree lookup_name_real
PARAMS ((tree
, int, int, int));
76 static void push_local_name
PARAMS ((tree
));
77 static void warn_extern_redeclared_static
PARAMS ((tree
, tree
));
78 static tree grok_reference_init
PARAMS ((tree
, tree
, tree
));
79 static tree grokfndecl
PARAMS ((tree
, tree
, tree
, tree
, int,
80 enum overload_flags
, tree
,
81 tree
, int, int, int, int, int, int, tree
));
82 static tree grokvardecl
PARAMS ((tree
, tree
, RID_BIT_TYPE
*, int, int, tree
));
83 static tree lookup_tag
PARAMS ((enum tree_code
, tree
,
84 struct binding_level
*, int));
85 static void set_identifier_type_value_with_scope
86 PARAMS ((tree
, tree
, struct binding_level
*));
87 static void record_unknown_type
PARAMS ((tree
, const char *));
88 static tree build_library_fn_1
PARAMS ((tree
, enum tree_code
, tree
));
89 static int member_function_or_else
PARAMS ((tree
, tree
, enum overload_flags
));
90 static void bad_specifiers
PARAMS ((tree
, const char *, int, int, int, int,
92 static tree maybe_process_template_type_declaration
PARAMS ((tree
, int, struct binding_level
*));
93 static void check_for_uninitialized_const_var
PARAMS ((tree
));
94 static unsigned long typename_hash
PARAMS ((hash_table_key
));
95 static bool typename_compare
PARAMS ((hash_table_key
, hash_table_key
));
96 static void push_binding
PARAMS ((tree
, tree
, struct binding_level
*));
97 static int add_binding
PARAMS ((tree
, tree
));
98 static void pop_binding
PARAMS ((tree
, tree
));
99 static tree local_variable_p_walkfn
PARAMS ((tree
*, int *, void *));
100 static tree find_binding
PARAMS ((tree
, tree
));
101 static tree select_decl
PARAMS ((tree
, int));
102 static int lookup_flags
PARAMS ((int, int));
103 static tree qualify_lookup
PARAMS ((tree
, int));
104 static tree record_builtin_java_type
PARAMS ((const char *, int));
105 static const char *tag_name
PARAMS ((enum tag_types code
));
106 static void find_class_binding_level
PARAMS ((void));
107 static struct binding_level
*innermost_nonclass_level
PARAMS ((void));
108 static void warn_about_implicit_typename_lookup
PARAMS ((tree
, tree
));
109 static int walk_namespaces_r
PARAMS ((tree
, walk_namespaces_fn
, void *));
110 static int walk_globals_r
PARAMS ((tree
, void *));
111 static void add_decl_to_level
PARAMS ((tree
, struct binding_level
*));
112 static tree make_label_decl
PARAMS ((tree
, int));
113 static void use_label
PARAMS ((tree
));
114 static void check_previous_goto_1
PARAMS ((tree
, struct binding_level
*, tree
,
116 static void check_previous_goto
PARAMS ((struct named_label_use_list
*));
117 static void check_switch_goto
PARAMS ((struct binding_level
*));
118 static void check_previous_gotos
PARAMS ((tree
));
119 static void pop_label
PARAMS ((tree
, tree
));
120 static void pop_labels
PARAMS ((tree
));
121 static void maybe_deduce_size_from_array_init
PARAMS ((tree
, tree
));
122 static void layout_var_decl
PARAMS ((tree
));
123 static void maybe_commonize_var
PARAMS ((tree
));
124 static tree check_initializer
PARAMS ((tree
, tree
));
125 static void make_rtl_for_nonlocal_decl
PARAMS ((tree
, tree
, const char *));
126 static void push_cp_function_context
PARAMS ((struct function
*));
127 static void pop_cp_function_context
PARAMS ((struct function
*));
128 static void mark_binding_level
PARAMS ((void *));
129 static void mark_named_label_lists
PARAMS ((void *, void *));
130 static void mark_cp_function_context
PARAMS ((struct function
*));
131 static void mark_saved_scope
PARAMS ((void *));
132 static void mark_lang_function
PARAMS ((struct cp_language_function
*));
133 static void save_function_data
PARAMS ((tree
));
134 static void check_function_type
PARAMS ((tree
, tree
));
135 static void destroy_local_var
PARAMS ((tree
));
136 static void finish_constructor_body
PARAMS ((void));
137 static void finish_destructor_body
PARAMS ((void));
138 static tree create_array_type_for_decl
PARAMS ((tree
, tree
, tree
));
139 static tree get_atexit_node
PARAMS ((void));
140 static tree get_dso_handle_node
PARAMS ((void));
141 static tree start_cleanup_fn
PARAMS ((void));
142 static void end_cleanup_fn
PARAMS ((void));
143 static tree cp_make_fname_decl
PARAMS ((tree
, int));
144 static void initialize_predefined_identifiers
PARAMS ((void));
145 static tree check_special_function_return_type
146 PARAMS ((special_function_kind
, tree
, tree
));
147 static tree push_cp_library_fn
PARAMS ((enum tree_code
, tree
));
148 static tree build_cp_library_fn
PARAMS ((tree
, enum tree_code
, tree
));
149 static void store_parm_decls
PARAMS ((tree
));
150 static int cp_missing_noreturn_ok_p
PARAMS ((tree
));
152 #if defined (DEBUG_CP_BINDING_LEVELS)
153 static void indent
PARAMS ((void));
156 /* Erroneous argument lists can use this *IFF* they do not modify it. */
157 tree error_mark_list
;
159 /* The following symbols are subsumed in the cp_global_trees array, and
160 listed here individually for documentation purposes.
163 tree wchar_decl_node;
165 tree vtable_entry_type;
166 tree delta_type_node;
167 tree __t_desc_type_node;
168 tree ti_desc_type_node;
169 tree bltn_desc_type_node, ptr_desc_type_node;
170 tree ary_desc_type_node, func_desc_type_node, enum_desc_type_node;
171 tree class_desc_type_node, si_class_desc_type_node, vmi_class_desc_type_node;
172 tree ptm_desc_type_node;
173 tree base_desc_type_node;
175 tree class_type_node, record_type_node, union_type_node, enum_type_node;
176 tree unknown_type_node;
178 Array type `vtable_entry_type[]'
181 tree vtbl_ptr_type_node;
188 A FUNCTION_DECL which can call `abort'. Not necessarily the
189 one that the user will declare, but sufficient to be called
190 by routines that want to abort the program.
194 The FUNCTION_DECL for the default `::operator delete'.
196 tree global_delete_fndecl;
199 tree type_info_type_node, tinfo_decl_id, tinfo_decl_type;
204 tree cp_global_trees
[CPTI_MAX
];
206 /* Indicates that there is a type value in some namespace, although
207 that is not necessarily in scope at the moment. */
209 static tree global_type_node
;
211 /* Expect only namespace names now. */
212 static int only_namespace_names
;
214 /* Used only for jumps to as-yet undefined labels, since jumps to
215 defined labels can have their validity checked immediately. */
217 struct named_label_use_list
219 struct binding_level
*binding_level
;
222 const char *filename_o_goto
;
224 struct named_label_use_list
*next
;
227 #define named_label_uses cp_function_chain->x_named_label_uses
229 #define local_names cp_function_chain->x_local_names
231 /* A list of objects which have constructors or destructors
232 which reside in the global scope. The decl is stored in
233 the TREE_VALUE slot and the initializer is stored
234 in the TREE_PURPOSE slot. */
235 tree static_aggregates
;
239 /* A node for the integer constants 2, and 3. */
241 tree integer_two_node
, integer_three_node
;
243 /* Similar, for last_function_parm_tags. */
244 tree last_function_parms
;
246 /* A list of all LABEL_DECLs in the function that have names. Here so
247 we can clear out their names' definitions at the end of the
248 function, and so we can check the validity of jumps to these labels. */
250 struct named_label_list
252 struct binding_level
*binding_level
;
257 struct named_label_list
*next
;
258 unsigned int in_try_scope
: 1;
259 unsigned int in_catch_scope
: 1;
262 #define named_labels cp_function_chain->x_named_labels
264 /* Nonzero means use the ISO C94 dialect of C. */
268 /* Nonzero means use the ISO C99 dialect of C. */
272 /* Nonzero means we are a hosted implementation for code shared with C. */
276 /* Nonzero means add default format_arg attributes for functions not
279 int flag_noniso_default_format_attributes
= 1;
281 /* Nonzero if we want to conserve space in the .o files. We do this
282 by putting uninitialized data and runtime initialized data into
283 .common instead of .data at the expense of not flagging multiple
285 extern int flag_conserve_space
;
287 /* C and C++ flags are in decl2.c. */
289 /* Flag used when debugging spew.c */
291 extern int spew_debug
;
293 /* A expression of value 0 with the same precision as a sizetype
295 tree signed_size_zero_node
;
297 /* The name of the anonymous namespace, throughout this translation
299 tree anonymous_namespace_name
;
301 /* The number of function bodies which we are currently processing.
302 (Zero if we are at namespace scope, one inside the body of a
303 function, two inside the body of a function in a local class, etc.) */
306 /* For each binding contour we allocate a binding_level structure
307 which records the names defined in that contour.
310 1) one for each function definition,
311 where internal declarations of the parameters appear.
312 2) one for each compound statement,
313 to record its declarations.
315 The current meaning of a name can be found by searching the levels
316 from the current one out to the global one.
318 Off to the side, may be the class_binding_level. This exists only
319 to catch class-local declarations. It is otherwise nonexistent.
321 Also there may be binding levels that catch cleanups that must be
322 run when exceptions occur. Thus, to see whether a name is bound in
323 the current scope, it is not enough to look in the
324 CURRENT_BINDING_LEVEL. You should use lookup_name_current_level
327 /* Note that the information in the `names' component of the global contour
328 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
332 /* A chain of _DECL nodes for all variables, constants, functions,
333 and typedef types. These are in the reverse of the order
334 supplied. There may be OVERLOADs on this list, too, but they
335 are wrapped in TREE_LISTs; the TREE_VALUE is the OVERLOAD. */
338 /* A list of structure, union and enum definitions, for looking up
340 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
341 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
342 or ENUMERAL_TYPE node.
344 C++: the TREE_VALUE nodes can be simple types for
345 component_bindings. */
348 /* A list of USING_DECL nodes. */
351 /* A list of used namespaces. PURPOSE is the namespace,
352 VALUE the common ancestor with this binding_level's namespace. */
353 tree using_directives
;
355 /* If this binding level is the binding level for a class, then
356 class_shadowed is a TREE_LIST. The TREE_PURPOSE of each node
357 is the name of an entity bound in the class. The TREE_TYPE is
358 the DECL bound by this name in the class. */
361 /* Similar to class_shadowed, but for IDENTIFIER_TYPE_VALUE, and
362 is used for all binding levels. In addition the TREE_VALUE is the
363 IDENTIFIER_TYPE_VALUE before we entered the class. */
366 /* A TREE_LIST. Each TREE_VALUE is the LABEL_DECL for a local
367 label in this scope. The TREE_PURPOSE is the previous value of
368 the IDENTIFIER_LABEL VALUE. */
369 tree shadowed_labels
;
371 /* For each level (except not the global one),
372 a chain of BLOCK nodes for all the levels
373 that were entered and exited one level down. */
376 /* The _TYPE node for this level, if parm_flag == 2. */
379 /* The binding level which this one is contained in (inherits from). */
380 struct binding_level
*level_chain
;
382 /* List of decls in `names' that have incomplete
383 structure or union types. */
386 /* List of VAR_DECLS saved from a previous for statement.
387 These would be dead in ISO-conforming code, but might
388 be referenced in ARM-era code. These are stored in a
389 TREE_LIST; the TREE_VALUE is the actual declaration. */
390 tree dead_vars_from_for
;
392 /* 1 for the level that holds the parameters of a function.
393 2 for the level that holds a class declaration. */
394 unsigned parm_flag
: 2;
396 /* 1 means make a BLOCK for this level regardless of all else.
397 2 for temporary binding contours created by the compiler. */
400 /* Nonzero if this level "doesn't exist" for tags. */
401 unsigned tag_transparent
: 1;
403 /* Nonzero if this level can safely have additional
404 cleanup-needing variables added to it. */
405 unsigned more_cleanups_ok
: 1;
406 unsigned have_cleanups
: 1;
408 /* Nonzero if this scope is for storing the decls for template
409 parameters and generic decls; these decls will be discarded and
410 replaced with a TEMPLATE_DECL. */
411 unsigned template_parms_p
: 1;
413 /* Nonzero if this scope corresponds to the `<>' in a
414 `template <>' clause. Whenever this flag is set,
415 TEMPLATE_PARMS_P will be set as well. */
416 unsigned template_spec_p
: 1;
418 /* This is set for a namespace binding level. */
419 unsigned namespace_p
: 1;
421 /* True if this level is that of a for-statement where we need to
422 worry about ambiguous (ARM or ISO) scope rules. */
423 unsigned is_for_scope
: 1;
425 /* True if this level corresponds to a TRY block. Currently this
426 information is only available while building the tree structure. */
427 unsigned is_try_scope
: 1;
429 /* True if this level corresponds to a CATCH block. Currently this
430 information is only available while building the tree structure. */
431 unsigned is_catch_scope
: 1;
433 /* Three bits left for this word. */
435 #if defined(DEBUG_CP_BINDING_LEVELS)
436 /* Binding depth at which this level began. */
437 unsigned binding_depth
;
438 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
441 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
443 /* The binding level currently in effect. */
445 #define current_binding_level \
446 (cfun && cp_function_chain->bindings \
447 ? cp_function_chain->bindings \
448 : scope_chain->bindings)
450 /* The binding level of the current class, if any. */
452 #define class_binding_level scope_chain->class_bindings
454 /* A chain of binding_level structures awaiting reuse. */
456 static struct binding_level
*free_binding_level
;
458 /* The outermost binding level, for names of file scope.
459 This is created when the compiler is started and exists
460 through the entire run. */
462 static struct binding_level
*global_binding_level
;
464 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
466 static int keep_next_level_flag
;
468 #if defined(DEBUG_CP_BINDING_LEVELS)
469 static int binding_depth
= 0;
470 static int is_class_level
= 0;
477 for (i
= 0; i
< binding_depth
*2; i
++)
480 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
482 static tree pushdecl_with_scope
PARAMS ((tree
, struct binding_level
*));
485 push_binding_level (newlevel
, tag_transparent
, keep
)
486 struct binding_level
*newlevel
;
487 int tag_transparent
, keep
;
489 /* Add this level to the front of the chain (stack) of levels that
491 memset ((char*) newlevel
, 0, sizeof (struct binding_level
));
492 newlevel
->level_chain
= current_binding_level
;
493 current_binding_level
= newlevel
;
494 newlevel
->tag_transparent
= tag_transparent
;
495 newlevel
->more_cleanups_ok
= 1;
497 newlevel
->keep
= keep
;
498 #if defined(DEBUG_CP_BINDING_LEVELS)
499 newlevel
->binding_depth
= binding_depth
;
501 fprintf (stderr
, "push %s level 0x%08x line %d\n",
502 (is_class_level
) ? "class" : "block", newlevel
, lineno
);
505 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
508 /* Find the innermost enclosing class scope, and reset
509 CLASS_BINDING_LEVEL appropriately. */
512 find_class_binding_level ()
514 struct binding_level
*level
= current_binding_level
;
516 while (level
&& level
->parm_flag
!= 2)
517 level
= level
->level_chain
;
518 if (level
&& level
->parm_flag
== 2)
519 class_binding_level
= level
;
521 class_binding_level
= 0;
527 if (global_binding_level
)
529 /* Cannot pop a level, if there are none left to pop. */
530 if (current_binding_level
== global_binding_level
)
531 my_friendly_abort (123);
533 /* Pop the current level, and free the structure for reuse. */
534 #if defined(DEBUG_CP_BINDING_LEVELS)
537 fprintf (stderr
, "pop %s level 0x%08x line %d\n",
538 (is_class_level
) ? "class" : "block",
539 current_binding_level
, lineno
);
540 if (is_class_level
!= (current_binding_level
== class_binding_level
))
543 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
546 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
548 register struct binding_level
*level
= current_binding_level
;
549 current_binding_level
= current_binding_level
->level_chain
;
550 level
->level_chain
= free_binding_level
;
551 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
552 if (level
->binding_depth
!= binding_depth
)
554 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
555 free_binding_level
= level
;
556 find_class_binding_level ();
561 suspend_binding_level ()
563 if (class_binding_level
)
564 current_binding_level
= class_binding_level
;
566 if (global_binding_level
)
568 /* Cannot suspend a level, if there are none left to suspend. */
569 if (current_binding_level
== global_binding_level
)
570 my_friendly_abort (123);
572 /* Suspend the current level. */
573 #if defined(DEBUG_CP_BINDING_LEVELS)
576 fprintf (stderr
, "suspend %s level 0x%08x line %d\n",
577 (is_class_level
) ? "class" : "block",
578 current_binding_level
, lineno
);
579 if (is_class_level
!= (current_binding_level
== class_binding_level
))
582 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
585 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
586 current_binding_level
= current_binding_level
->level_chain
;
587 find_class_binding_level ();
591 resume_binding_level (b
)
592 struct binding_level
*b
;
594 /* Resuming binding levels is meant only for namespaces,
595 and those cannot nest into classes. */
596 my_friendly_assert(!class_binding_level
, 386);
597 /* Also, resuming a non-directly nested namespace is a no-no. */
598 my_friendly_assert(b
->level_chain
== current_binding_level
, 386);
599 current_binding_level
= b
;
600 #if defined(DEBUG_CP_BINDING_LEVELS)
601 b
->binding_depth
= binding_depth
;
603 fprintf (stderr
, "resume %s level 0x%08x line %d\n",
604 (is_class_level
) ? "class" : "block", b
, lineno
);
607 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
610 /* Create a new `struct binding_level'. */
613 struct binding_level
*
614 make_binding_level ()
617 return (struct binding_level
*) xmalloc (sizeof (struct binding_level
));
620 /* Nonzero if we are currently in the global binding level. */
625 return current_binding_level
== global_binding_level
;
628 /* Return the innermost binding level that is not for a class scope. */
630 static struct binding_level
*
631 innermost_nonclass_level ()
633 struct binding_level
*b
;
635 b
= current_binding_level
;
636 while (b
->parm_flag
== 2)
642 /* Nonzero if we are currently in a toplevel binding level. This
643 means either the global binding level or a namespace in a toplevel
644 binding level. Since there are no non-toplevel namespace levels,
645 this really means any namespace or template parameter level. We
646 also include a class whose context is toplevel. */
649 toplevel_bindings_p ()
651 struct binding_level
*b
= innermost_nonclass_level ();
653 return b
->namespace_p
|| b
->template_parms_p
;
656 /* Nonzero if this is a namespace scope, or if we are defining a class
657 which is itself at namespace scope, or whose enclosing class is
658 such a class, etc. */
661 namespace_bindings_p ()
663 struct binding_level
*b
= innermost_nonclass_level ();
665 return b
->namespace_p
;
668 /* If KEEP is non-zero, make a BLOCK node for the next binding level,
669 unconditionally. Otherwise, use the normal logic to decide whether
670 or not to create a BLOCK. */
673 keep_next_level (keep
)
676 keep_next_level_flag
= keep
;
679 /* Nonzero if the current level needs to have a BLOCK made. */
684 return (current_binding_level
->blocks
!= NULL_TREE
685 || current_binding_level
->keep
686 || current_binding_level
->names
!= NULL_TREE
687 || (current_binding_level
->tags
!= NULL_TREE
688 && !current_binding_level
->tag_transparent
));
692 declare_namespace_level ()
694 current_binding_level
->namespace_p
= 1;
697 /* Returns non-zero if this scope was created to store template
701 template_parm_scope_p ()
703 return current_binding_level
->template_parms_p
;
706 /* Returns the kind of template specialization we are currently
707 processing, given that it's declaration contained N_CLASS_SCOPES
708 explicit scope qualifications. */
711 current_tmpl_spec_kind (n_class_scopes
)
714 int n_template_parm_scopes
= 0;
715 int seen_specialization_p
= 0;
716 int innermost_specialization_p
= 0;
717 struct binding_level
*b
;
719 /* Scan through the template parameter scopes. */
720 for (b
= current_binding_level
; b
->template_parms_p
; b
= b
->level_chain
)
722 /* If we see a specialization scope inside a parameter scope,
723 then something is wrong. That corresponds to a declaration
726 template <class T> template <> ...
728 which is always illegal since [temp.expl.spec] forbids the
729 specialization of a class member template if the enclosing
730 class templates are not explicitly specialized as well. */
731 if (b
->template_spec_p
)
733 if (n_template_parm_scopes
== 0)
734 innermost_specialization_p
= 1;
736 seen_specialization_p
= 1;
738 else if (seen_specialization_p
== 1)
739 return tsk_invalid_member_spec
;
741 ++n_template_parm_scopes
;
744 /* Handle explicit instantiations. */
745 if (processing_explicit_instantiation
)
747 if (n_template_parm_scopes
!= 0)
748 /* We've seen a template parameter list during an explicit
749 instantiation. For example:
751 template <class T> template void f(int);
753 This is erroneous. */
754 return tsk_invalid_expl_inst
;
756 return tsk_expl_inst
;
759 if (n_template_parm_scopes
< n_class_scopes
)
760 /* We've not seen enough template headers to match all the
761 specialized classes present. For example:
763 template <class T> void R<T>::S<T>::f(int);
765 This is illegal; there needs to be one set of template
766 parameters for each class. */
767 return tsk_insufficient_parms
;
768 else if (n_template_parm_scopes
== n_class_scopes
)
769 /* We're processing a non-template declaration (even though it may
770 be a member of a template class.) For example:
772 template <class T> void S<T>::f(int);
774 The `class T' maches the `S<T>', leaving no template headers
775 corresponding to the `f'. */
777 else if (n_template_parm_scopes
> n_class_scopes
+ 1)
778 /* We've got too many template headers. For example:
780 template <> template <class T> void f (T);
782 There need to be more enclosing classes. */
783 return tsk_excessive_parms
;
785 /* This must be a template. It's of the form:
787 template <class T> template <class U> void S<T>::f(U);
789 This is a specialization if the innermost level was a
790 specialization; otherwise it's just a definition of the
792 return innermost_specialization_p
? tsk_expl_spec
: tsk_template
;
796 set_class_shadows (shadows
)
799 class_binding_level
->class_shadowed
= shadows
;
802 /* Enter a new binding level.
803 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
804 not for that of tags. */
807 pushlevel (tag_transparent
)
810 struct binding_level
*newlevel
;
812 if (cfun
&& !doing_semantic_analysis_p ())
815 /* Reuse or create a struct for this binding level. */
816 #if defined(DEBUG_CP_BINDING_LEVELS)
818 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
819 if (free_binding_level
)
820 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
822 newlevel
= free_binding_level
;
823 free_binding_level
= free_binding_level
->level_chain
;
826 newlevel
= make_binding_level ();
828 push_binding_level (newlevel
, tag_transparent
, keep_next_level_flag
);
829 GNU_xref_start_scope ((size_t) newlevel
);
830 keep_next_level_flag
= 0;
833 /* We're defining an object of type TYPE. If it needs a cleanup, but
834 we're not allowed to add any more objects with cleanups to the current
835 scope, create a new binding level. */
838 maybe_push_cleanup_level (type
)
841 if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type
)
842 && current_binding_level
->more_cleanups_ok
== 0)
847 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/1);
851 /* Enter a new scope. The KIND indicates what kind of scope is being
862 case sk_template_spec
:
863 current_binding_level
->template_spec_p
= 1;
866 case sk_template_parms
:
867 current_binding_level
->template_parms_p
= 1;
871 my_friendly_abort (20000309);
875 /* Exit the current scope. */
884 note_level_for_for ()
886 current_binding_level
->is_for_scope
= 1;
889 /* Record that the current binding level represents a try block. */
892 note_level_for_try ()
894 current_binding_level
->is_try_scope
= 1;
897 /* Record that the current binding level represents a catch block. */
900 note_level_for_catch ()
902 current_binding_level
->is_catch_scope
= 1;
905 /* For a binding between a name and an entity at a block scope,
906 this is the `struct binding_level' for the block. */
907 #define BINDING_LEVEL(NODE) \
908 (((struct tree_binding*)NODE)->scope.level)
910 /* A free list of CPLUS_BINDING nodes, connected by their
913 static tree free_bindings
;
915 /* Make DECL the innermost binding for ID. The LEVEL is the binding
916 level at which this declaration is being bound. */
919 push_binding (id
, decl
, level
)
922 struct binding_level
* level
;
928 binding
= free_bindings
;
929 free_bindings
= TREE_CHAIN (binding
);
932 binding
= make_node (CPLUS_BINDING
);
934 /* Now, fill in the binding information. */
935 BINDING_VALUE (binding
) = decl
;
936 BINDING_TYPE (binding
) = NULL_TREE
;
937 BINDING_LEVEL (binding
) = level
;
938 INHERITED_VALUE_BINDING_P (binding
) = 0;
939 LOCAL_BINDING_P (binding
) = (level
!= class_binding_level
);
940 BINDING_HAS_LEVEL_P (binding
) = 1;
942 /* And put it on the front of the list of bindings for ID. */
943 TREE_CHAIN (binding
) = IDENTIFIER_BINDING (id
);
944 IDENTIFIER_BINDING (id
) = binding
;
947 /* ID is already bound in the current scope. But, DECL is an
948 additional binding for ID in the same scope. This is the `struct
949 stat' hack whereby a non-typedef class-name or enum-name can be
950 bound at the same level as some other kind of entity. It's the
951 responsibility of the caller to check that inserting this name is
952 legal here. Returns nonzero if the new binding was successful. */
954 add_binding (id
, decl
)
958 tree binding
= IDENTIFIER_BINDING (id
);
961 if (TREE_CODE (decl
) == TYPE_DECL
&& DECL_ARTIFICIAL (decl
))
962 /* The new name is the type name. */
963 BINDING_TYPE (binding
) = decl
;
964 else if (!BINDING_VALUE (binding
))
965 /* This situation arises when push_class_level_binding moves an
966 inherited type-binding out of the way to make room for a new
968 BINDING_VALUE (binding
) = decl
;
969 else if (TREE_CODE (BINDING_VALUE (binding
)) == TYPE_DECL
970 && DECL_ARTIFICIAL (BINDING_VALUE (binding
)))
972 /* The old binding was a type name. It was placed in
973 BINDING_VALUE because it was thought, at the point it was
974 declared, to be the only entity with such a name. Move the
975 type name into the type slot; it is now hidden by the new
977 BINDING_TYPE (binding
) = BINDING_VALUE (binding
);
978 BINDING_VALUE (binding
) = decl
;
979 INHERITED_VALUE_BINDING_P (binding
) = 0;
981 else if (TREE_CODE (BINDING_VALUE (binding
)) == TYPE_DECL
982 && TREE_CODE (decl
) == TYPE_DECL
983 && DECL_NAME (decl
) == DECL_NAME (BINDING_VALUE (binding
))
984 && same_type_p (TREE_TYPE (decl
),
985 TREE_TYPE (BINDING_VALUE (binding
))))
986 /* We have two typedef-names, both naming the same type to have
987 the same name. This is OK because of:
991 In a given scope, a typedef specifier can be used to redefine
992 the name of any type declared in that scope to refer to the
993 type to which it already refers. */
995 /* There can be two block-scope declarations of the same variable,
996 so long as they are `extern' declarations. */
997 else if (TREE_CODE (decl
) == VAR_DECL
998 && TREE_CODE (BINDING_VALUE (binding
)) == VAR_DECL
999 && DECL_EXTERNAL (decl
)
1000 && DECL_EXTERNAL (BINDING_VALUE (binding
)))
1002 duplicate_decls (decl
, BINDING_VALUE (binding
));
1007 cp_error ("declaration of `%#D'", decl
);
1008 cp_error_at ("conflicts with previous declaration `%#D'",
1009 BINDING_VALUE (binding
));
1016 /* Add DECL to the list of things declared in B. */
1019 add_decl_to_level (decl
, b
)
1021 struct binding_level
*b
;
1023 /* We build up the list in reverse order, and reverse it later if
1025 TREE_CHAIN (decl
) = b
->names
;
1029 /* Bind DECL to ID in the current_binding_level, assumed to be a local
1030 binding level. If PUSH_USING is set in FLAGS, we know that DECL
1031 doesn't really belong to this binding level, that it got here
1032 through a using-declaration. */
1035 push_local_binding (id
, decl
, flags
)
1040 struct binding_level
*b
;
1042 /* Skip over any local classes. This makes sense if we call
1043 push_local_binding with a friend decl of a local class. */
1044 b
= current_binding_level
;
1045 while (b
->parm_flag
== 2)
1048 if (lookup_name_current_level (id
))
1050 /* Supplement the existing binding. */
1051 if (!add_binding (id
, decl
))
1052 /* It didn't work. Something else must be bound at this
1053 level. Do not add DECL to the list of things to pop
1058 /* Create a new binding. */
1059 push_binding (id
, decl
, b
);
1061 if (TREE_CODE (decl
) == OVERLOAD
|| (flags
& PUSH_USING
))
1062 /* We must put the OVERLOAD into a TREE_LIST since the
1063 TREE_CHAIN of an OVERLOAD is already used. Similarly for
1064 decls that got here through a using-declaration. */
1065 decl
= build_tree_list (NULL_TREE
, decl
);
1067 /* And put DECL on the list of things declared by the current
1069 add_decl_to_level (decl
, b
);
1072 /* Bind DECL to ID in the class_binding_level. Returns nonzero if the
1073 binding was successful. */
1076 push_class_binding (id
, decl
)
1081 tree binding
= IDENTIFIER_BINDING (id
);
1084 /* Note that we declared this value so that we can issue an error if
1085 this an illegal redeclaration of a name already used for some
1087 note_name_declared_in_class (id
, decl
);
1089 if (binding
&& BINDING_LEVEL (binding
) == class_binding_level
)
1090 /* Supplement the existing binding. */
1091 result
= add_binding (id
, decl
);
1093 /* Create a new binding. */
1094 push_binding (id
, decl
, class_binding_level
);
1096 /* Update the IDENTIFIER_CLASS_VALUE for this ID to be the
1097 class-level declaration. Note that we do not use DECL here
1098 because of the possibility of the `struct stat' hack; if DECL is
1099 a class-name or enum-name we might prefer a field-name, or some
1101 IDENTIFIER_CLASS_VALUE (id
) = BINDING_VALUE (IDENTIFIER_BINDING (id
));
1103 /* If this is a binding from a base class, mark it as such. */
1104 binding
= IDENTIFIER_BINDING (id
);
1105 if (BINDING_VALUE (binding
) == decl
&& TREE_CODE (decl
) != TREE_LIST
)
1107 /* Any implicit typename must be from a base-class. The
1108 context for an implicit typename declaration is always
1109 the derived class in which the lookup was done, so the checks
1110 based on the context of DECL below will not trigger. */
1111 if (IMPLICIT_TYPENAME_TYPE_DECL_P (decl
))
1112 INHERITED_VALUE_BINDING_P (binding
) = 1;
1115 if (TREE_CODE (decl
) == OVERLOAD
)
1116 context
= CP_DECL_CONTEXT (OVL_CURRENT (decl
));
1119 my_friendly_assert (DECL_P (decl
), 0);
1120 context
= context_for_name_lookup (decl
);
1123 if (is_properly_derived_from (current_class_type
, context
))
1124 INHERITED_VALUE_BINDING_P (binding
) = 1;
1126 INHERITED_VALUE_BINDING_P (binding
) = 0;
1129 else if (BINDING_VALUE (binding
) == decl
)
1130 /* We only encounter a TREE_LIST when push_class_decls detects an
1131 ambiguity. Such an ambiguity can be overridden by a definition
1133 INHERITED_VALUE_BINDING_P (binding
) = 1;
1138 /* Remove the binding for DECL which should be the innermost binding
1142 pop_binding (id
, decl
)
1148 if (id
== NULL_TREE
)
1149 /* It's easiest to write the loops that call this function without
1150 checking whether or not the entities involved have names. We
1151 get here for such an entity. */
1154 /* Get the innermost binding for ID. */
1155 binding
= IDENTIFIER_BINDING (id
);
1157 /* The name should be bound. */
1158 my_friendly_assert (binding
!= NULL_TREE
, 0);
1160 /* The DECL will be either the ordinary binding or the type
1161 binding for this identifier. Remove that binding. */
1162 if (BINDING_VALUE (binding
) == decl
)
1163 BINDING_VALUE (binding
) = NULL_TREE
;
1164 else if (BINDING_TYPE (binding
) == decl
)
1165 BINDING_TYPE (binding
) = NULL_TREE
;
1167 my_friendly_abort (0);
1169 if (!BINDING_VALUE (binding
) && !BINDING_TYPE (binding
))
1171 /* We're completely done with the innermost binding for this
1172 identifier. Unhook it from the list of bindings. */
1173 IDENTIFIER_BINDING (id
) = TREE_CHAIN (binding
);
1175 /* Add it to the free list. */
1176 TREE_CHAIN (binding
) = free_bindings
;
1177 free_bindings
= binding
;
1179 /* Clear the BINDING_LEVEL so the garbage collector doesn't walk
1181 BINDING_LEVEL (binding
) = NULL
;
1185 /* When a label goes out of scope, check to see if that label was used
1186 in a valid manner, and issue any appropriate warnings or errors. */
1189 pop_label (label
, old_value
)
1193 if (!processing_template_decl
&& doing_semantic_analysis_p ())
1195 if (DECL_INITIAL (label
) == NULL_TREE
)
1197 cp_error_at ("label `%D' used but not defined", label
);
1198 /* Avoid crashing later. */
1199 define_label (input_filename
, 1, DECL_NAME (label
));
1201 else if (warn_unused_label
&& !TREE_USED (label
))
1202 cp_warning_at ("label `%D' defined but not used", label
);
1205 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label
), old_value
);
1208 /* At the end of a function, all labels declared within the function
1209 go out of scope. BLOCK is the top-level block for the
1216 struct named_label_list
*link
;
1218 /* Clear out the definitions of all label names, since their scopes
1220 for (link
= named_labels
; link
; link
= link
->next
)
1222 pop_label (link
->label_decl
, link
->old_value
);
1223 /* Put the labels into the "variables" of the top-level block,
1224 so debugger can see them. */
1225 TREE_CHAIN (link
->label_decl
) = BLOCK_VARS (block
);
1226 BLOCK_VARS (block
) = link
->label_decl
;
1229 named_labels
= NULL
;
1232 /* Exit a binding level.
1233 Pop the level off, and restore the state of the identifier-decl mappings
1234 that were in effect when this level was entered.
1236 If KEEP == 1, this level had explicit declarations, so
1237 and create a "block" (a BLOCK node) for the level
1238 to record its declarations and subblocks for symbol table output.
1240 If FUNCTIONBODY is nonzero, this level is the body of a function,
1241 so create a block as if KEEP were set and also clear out all
1244 If REVERSE is nonzero, reverse the order of decls before putting
1245 them into the BLOCK. */
1248 poplevel (keep
, reverse
, functionbody
)
1254 /* The chain of decls was accumulated in reverse order.
1255 Put it into forward order, just for cleanliness. */
1257 int tmp
= functionbody
;
1258 int real_functionbody
;
1261 tree block
= NULL_TREE
;
1263 int leaving_for_scope
;
1265 if (cfun
&& !doing_semantic_analysis_p ())
1268 my_friendly_assert (current_binding_level
->parm_flag
!= 2,
1271 real_functionbody
= (current_binding_level
->keep
== 2
1272 ? ((functionbody
= 0), tmp
) : functionbody
);
1273 tags
= functionbody
>= 0 ? current_binding_level
->tags
: 0;
1274 subblocks
= functionbody
>= 0 ? current_binding_level
->blocks
: 0;
1276 my_friendly_assert (!current_binding_level
->class_shadowed
,
1279 /* We used to use KEEP == 2 to indicate that the new block should go
1280 at the beginning of the list of blocks at this binding level,
1281 rather than the end. This hack is no longer used. */
1282 my_friendly_assert (keep
== 0 || keep
== 1, 0);
1284 GNU_xref_end_scope ((size_t) current_binding_level
,
1285 (size_t) current_binding_level
->level_chain
,
1286 current_binding_level
->parm_flag
,
1287 current_binding_level
->keep
);
1289 if (current_binding_level
->keep
== 1)
1292 /* Any uses of undefined labels, and any defined labels, now operate
1293 under constraints of next binding contour. */
1294 if (cfun
&& !functionbody
)
1296 struct binding_level
*level_chain
;
1297 level_chain
= current_binding_level
->level_chain
;
1300 struct named_label_use_list
*uses
;
1301 struct named_label_list
*labels
;
1302 for (labels
= named_labels
; labels
; labels
= labels
->next
)
1303 if (labels
->binding_level
== current_binding_level
)
1306 if (current_binding_level
->is_try_scope
)
1307 labels
->in_try_scope
= 1;
1308 if (current_binding_level
->is_catch_scope
)
1309 labels
->in_catch_scope
= 1;
1310 for (decl
= labels
->names_in_scope
; decl
;
1311 decl
= TREE_CHAIN (decl
))
1312 if (decl_jump_unsafe (decl
))
1313 labels
->bad_decls
= tree_cons (NULL_TREE
, decl
,
1315 labels
->binding_level
= level_chain
;
1316 labels
->names_in_scope
= level_chain
->names
;
1319 for (uses
= named_label_uses
; uses
; uses
= uses
->next
)
1320 if (uses
->binding_level
== current_binding_level
)
1322 uses
->binding_level
= level_chain
;
1323 uses
->names_in_scope
= level_chain
->names
;
1328 /* Get the decls in the order they were written.
1329 Usually current_binding_level->names is in reverse order.
1330 But parameter decls were previously put in forward order. */
1333 current_binding_level
->names
1334 = decls
= nreverse (current_binding_level
->names
);
1336 decls
= current_binding_level
->names
;
1338 /* Output any nested inline functions within this block
1339 if they weren't already output. */
1340 for (decl
= decls
; decl
; decl
= TREE_CHAIN (decl
))
1341 if (TREE_CODE (decl
) == FUNCTION_DECL
1342 && ! TREE_ASM_WRITTEN (decl
)
1343 && DECL_INITIAL (decl
) != NULL_TREE
1344 && TREE_ADDRESSABLE (decl
)
1345 && decl_function_context (decl
) == current_function_decl
)
1347 /* If this decl was copied from a file-scope decl
1348 on account of a block-scope extern decl,
1349 propagate TREE_ADDRESSABLE to the file-scope decl. */
1350 if (DECL_ABSTRACT_ORIGIN (decl
) != NULL_TREE
)
1351 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl
)) = 1;
1354 push_function_context ();
1355 output_inline_function (decl
);
1356 pop_function_context ();
1360 /* When not in function-at-a-time mode, expand_end_bindings will
1361 warn about unused variables. But, in function-at-a-time mode
1362 expand_end_bindings is not passed the list of variables in the
1363 current scope, and therefore no warning is emitted. So, we
1364 explicitly warn here. */
1365 if (!processing_template_decl
)
1366 warn_about_unused_variables (getdecls ());
1368 /* If there were any declarations or structure tags in that level,
1369 or if this level is a function body,
1370 create a BLOCK to record them for the life of this function. */
1372 if (keep
== 1 || functionbody
)
1373 block
= make_node (BLOCK
);
1374 if (block
!= NULL_TREE
)
1376 BLOCK_VARS (block
) = decls
;
1377 BLOCK_SUBBLOCKS (block
) = subblocks
;
1380 /* In each subblock, record that this is its superior. */
1382 for (link
= subblocks
; link
; link
= TREE_CHAIN (link
))
1383 BLOCK_SUPERCONTEXT (link
) = block
;
1385 /* We still support the old for-scope rules, whereby the variables
1386 in a for-init statement were in scope after the for-statement
1387 ended. We only use the new rules in flag_new_for_scope is
1390 = current_binding_level
->is_for_scope
&& flag_new_for_scope
== 1;
1392 /* Remove declarations for all the DECLs in this level. */
1393 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1395 if (leaving_for_scope
&& TREE_CODE (link
) == VAR_DECL
1396 && DECL_NAME (link
))
1399 = TREE_CHAIN (IDENTIFIER_BINDING (DECL_NAME (link
)));
1403 ns_binding
= IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (link
));
1405 ns_binding
= NULL_TREE
;
1408 && (BINDING_LEVEL (outer_binding
)
1409 == current_binding_level
->level_chain
))
1410 /* We have something like:
1415 and we are leaving the `for' scope. There's no reason to
1416 keep the binding of the inner `i' in this case. */
1417 pop_binding (DECL_NAME (link
), link
);
1418 else if ((outer_binding
1419 && (TREE_CODE (BINDING_VALUE (outer_binding
))
1422 && TREE_CODE (ns_binding
) == TYPE_DECL
))
1423 /* Here, we have something like:
1431 We must pop the for-scope binding so we know what's a
1432 type and what isn't. */
1433 pop_binding (DECL_NAME (link
), link
);
1436 /* Mark this VAR_DECL as dead so that we can tell we left it
1437 there only for backward compatibility. */
1438 DECL_DEAD_FOR_LOCAL (link
) = 1;
1440 /* Keep track of what should of have happenned when we
1441 popped the binding. */
1442 if (outer_binding
&& BINDING_VALUE (outer_binding
))
1443 DECL_SHADOWED_FOR_VAR (link
)
1444 = BINDING_VALUE (outer_binding
);
1446 /* Add it to the list of dead variables in the next
1447 outermost binding to that we can remove these when we
1448 leave that binding. */
1449 current_binding_level
->level_chain
->dead_vars_from_for
1450 = tree_cons (NULL_TREE
, link
,
1451 current_binding_level
->level_chain
->
1452 dead_vars_from_for
);
1454 /* Although we don't pop the CPLUS_BINDING, we do clear
1455 its BINDING_LEVEL since the level is going away now. */
1456 BINDING_LEVEL (IDENTIFIER_BINDING (DECL_NAME (link
)))
1462 /* Remove the binding. */
1464 if (TREE_CODE (decl
) == TREE_LIST
)
1465 decl
= TREE_VALUE (decl
);
1467 pop_binding (DECL_NAME (decl
), decl
);
1468 else if (TREE_CODE (decl
) == OVERLOAD
)
1469 pop_binding (DECL_NAME (OVL_FUNCTION (decl
)), decl
);
1471 my_friendly_abort (0);
1475 /* Remove declarations for any `for' variables from inner scopes
1476 that we kept around. */
1477 for (link
= current_binding_level
->dead_vars_from_for
;
1478 link
; link
= TREE_CHAIN (link
))
1479 pop_binding (DECL_NAME (TREE_VALUE (link
)), TREE_VALUE (link
));
1481 /* Restore the IDENTIFIER_TYPE_VALUEs. */
1482 for (link
= current_binding_level
->type_shadowed
;
1483 link
; link
= TREE_CHAIN (link
))
1484 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
), TREE_VALUE (link
));
1486 /* Restore the IDENTIFIER_LABEL_VALUEs for local labels. */
1487 for (link
= current_binding_level
->shadowed_labels
;
1489 link
= TREE_CHAIN (link
))
1490 pop_label (TREE_VALUE (link
), TREE_PURPOSE (link
));
1492 /* There may be OVERLOADs (wrapped in TREE_LISTs) on the BLOCK_VARs
1493 list if a `using' declaration put them there. The debugging
1494 back-ends won't understand OVERLOAD, so we remove them here.
1495 Because the BLOCK_VARS are (temporarily) shared with
1496 CURRENT_BINDING_LEVEL->NAMES we must do this fixup after we have
1497 popped all the bindings. */
1502 for (d
= &BLOCK_VARS (block
); *d
; )
1504 if (TREE_CODE (*d
) == TREE_LIST
)
1505 *d
= TREE_CHAIN (*d
);
1507 d
= &TREE_CHAIN (*d
);
1511 /* If the level being exited is the top level of a function,
1512 check over all the labels. */
1515 /* Since this is the top level block of a function, the vars are
1516 the function's parameters. Don't leave them in the BLOCK
1517 because they are found in the FUNCTION_DECL instead. */
1518 BLOCK_VARS (block
) = 0;
1522 tmp
= current_binding_level
->keep
;
1524 pop_binding_level ();
1526 DECL_INITIAL (current_function_decl
) = block
;
1528 current_binding_level
->blocks
1529 = chainon (current_binding_level
->blocks
, block
);
1531 /* If we did not make a block for the level just exited,
1532 any blocks made for inner levels
1533 (since they cannot be recorded as subblocks in that level)
1534 must be carried forward so they will later become subblocks
1535 of something else. */
1537 current_binding_level
->blocks
1538 = chainon (current_binding_level
->blocks
, subblocks
);
1540 /* Each and every BLOCK node created here in `poplevel' is important
1541 (e.g. for proper debugging information) so if we created one
1542 earlier, mark it as "used". */
1544 TREE_USED (block
) = 1;
1546 /* Take care of compiler's internal binding structures. */
1552 = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/1);
1555 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmts
)) = block
;
1556 SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmts
)) = block
;
1559 block
= poplevel (keep
, reverse
, functionbody
);
1565 /* Delete the node BLOCK from the current binding level.
1566 This is used for the block inside a stmt expr ({...})
1567 so that the block can be reinserted where appropriate. */
1570 delete_block (block
)
1574 if (current_binding_level
->blocks
== block
)
1575 current_binding_level
->blocks
= TREE_CHAIN (block
);
1576 for (t
= current_binding_level
->blocks
; t
;)
1578 if (TREE_CHAIN (t
) == block
)
1579 TREE_CHAIN (t
) = TREE_CHAIN (block
);
1583 TREE_CHAIN (block
) = NULL_TREE
;
1584 /* Clear TREE_USED which is always set by poplevel.
1585 The flag is set again if insert_block is called. */
1586 TREE_USED (block
) = 0;
1589 /* Insert BLOCK at the end of the list of subblocks of the
1590 current binding level. This is used when a BIND_EXPR is expanded,
1591 to handle the BLOCK node inside the BIND_EXPR. */
1594 insert_block (block
)
1597 TREE_USED (block
) = 1;
1598 current_binding_level
->blocks
1599 = chainon (current_binding_level
->blocks
, block
);
1602 /* Set the BLOCK node for the innermost scope
1603 (the one we are currently in). */
1607 tree block ATTRIBUTE_UNUSED
;
1609 /* The RTL expansion machinery requires us to provide this callback,
1610 but it is not applicable in function-at-a-time mode. */
1611 my_friendly_assert (cfun
&& !doing_semantic_analysis_p (), 20000911);
1614 /* Do a pushlevel for class declarations. */
1619 register struct binding_level
*newlevel
;
1621 /* Reuse or create a struct for this binding level. */
1622 #if defined(DEBUG_CP_BINDING_LEVELS)
1624 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1625 if (free_binding_level
)
1626 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1628 newlevel
= free_binding_level
;
1629 free_binding_level
= free_binding_level
->level_chain
;
1632 newlevel
= make_binding_level ();
1634 #if defined(DEBUG_CP_BINDING_LEVELS)
1636 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1638 push_binding_level (newlevel
, 0, 0);
1640 class_binding_level
= current_binding_level
;
1641 class_binding_level
->parm_flag
= 2;
1642 class_binding_level
->this_class
= current_class_type
;
1645 /* ...and a poplevel for class declarations. */
1650 register struct binding_level
*level
= class_binding_level
;
1653 my_friendly_assert (level
!= 0, 354);
1655 /* If we're leaving a toplevel class, don't bother to do the setting
1656 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1657 shouldn't even be used when current_class_type isn't set, and second,
1658 if we don't touch it here, we're able to use the cache effect if the
1659 next time we're entering a class scope, it is the same class. */
1660 if (current_class_depth
!= 1)
1662 struct binding_level
* b
;
1664 /* Clear out our IDENTIFIER_CLASS_VALUEs. */
1665 for (shadowed
= level
->class_shadowed
;
1667 shadowed
= TREE_CHAIN (shadowed
))
1668 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed
)) = NULL_TREE
;
1670 /* Find the next enclosing class, and recreate
1671 IDENTIFIER_CLASS_VALUEs appropriate for that class. */
1672 b
= level
->level_chain
;
1673 while (b
&& b
->parm_flag
!= 2)
1677 for (shadowed
= b
->class_shadowed
;
1679 shadowed
= TREE_CHAIN (shadowed
))
1683 t
= IDENTIFIER_BINDING (TREE_PURPOSE (shadowed
));
1684 while (t
&& BINDING_LEVEL (t
) != b
)
1688 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed
))
1689 = BINDING_VALUE (t
);
1693 /* Remember to save what IDENTIFIER's were bound in this scope so we
1694 can recover from cache misses. */
1696 previous_class_type
= current_class_type
;
1697 previous_class_values
= class_binding_level
->class_shadowed
;
1699 for (shadowed
= level
->type_shadowed
;
1701 shadowed
= TREE_CHAIN (shadowed
))
1702 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed
), TREE_VALUE (shadowed
));
1704 /* Remove the bindings for all of the class-level declarations. */
1705 for (shadowed
= level
->class_shadowed
;
1707 shadowed
= TREE_CHAIN (shadowed
))
1708 pop_binding (TREE_PURPOSE (shadowed
), TREE_TYPE (shadowed
));
1710 GNU_xref_end_scope ((size_t) class_binding_level
,
1711 (size_t) class_binding_level
->level_chain
,
1712 class_binding_level
->parm_flag
,
1713 class_binding_level
->keep
);
1715 /* Now, pop out of the binding level which we created up in the
1716 `pushlevel_class' routine. */
1717 #if defined(DEBUG_CP_BINDING_LEVELS)
1719 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1721 pop_binding_level ();
1724 /* We are entering the scope of a class. Clear IDENTIFIER_CLASS_VALUE
1725 for any names in enclosing classes. */
1728 clear_identifier_class_values ()
1732 if (!class_binding_level
)
1735 for (t
= class_binding_level
->class_shadowed
;
1738 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (t
)) = NULL_TREE
;
1741 /* Returns non-zero if T is a virtual function table. */
1744 vtable_decl_p (t
, data
)
1746 void *data ATTRIBUTE_UNUSED
;
1748 return (TREE_CODE (t
) == VAR_DECL
&& DECL_VIRTUAL_P (t
));
1751 /* Returns non-zero if T is a TYPE_DECL for a type with virtual
1755 vtype_decl_p (t
, data
)
1757 void *data ATTRIBUTE_UNUSED
;
1759 return (TREE_CODE (t
) == TYPE_DECL
1760 && TREE_CODE (TREE_TYPE (t
)) == RECORD_TYPE
1761 && TYPE_POLYMORPHIC_P (TREE_TYPE (t
)));
1764 /* Return the declarations that are members of the namespace NS. */
1767 cp_namespace_decls (ns
)
1770 return NAMESPACE_LEVEL (ns
)->names
;
1773 /* Walk all the namespaces contained NAMESPACE, including NAMESPACE
1774 itself, calling F for each. The DATA is passed to F as well. */
1777 walk_namespaces_r (namespace, f
, data
)
1779 walk_namespaces_fn f
;
1785 result
|= (*f
) (namespace, data
);
1787 for (current
= cp_namespace_decls (namespace);
1789 current
= TREE_CHAIN (current
))
1791 if (TREE_CODE (current
) != NAMESPACE_DECL
1792 || DECL_NAMESPACE_ALIAS (current
))
1795 /* We found a namespace. */
1796 result
|= walk_namespaces_r (current
, f
, data
);
1802 /* Walk all the namespaces, calling F for each. The DATA is passed to
1806 walk_namespaces (f
, data
)
1807 walk_namespaces_fn f
;
1810 return walk_namespaces_r (global_namespace
, f
, data
);
1813 struct walk_globals_data
{
1814 walk_globals_pred p
;
1819 /* Walk the global declarations in NAMESPACE. Whenever one is found
1820 for which P returns non-zero, call F with its address. If any call
1821 to F returns a non-zero value, return a non-zero value. */
1824 walk_globals_r (namespace, data
)
1828 struct walk_globals_data
* wgd
= (struct walk_globals_data
*) data
;
1829 walk_globals_pred p
= wgd
->p
;
1830 walk_globals_fn f
= wgd
->f
;
1831 void *d
= wgd
->data
;
1835 t
= &NAMESPACE_LEVEL (namespace)->names
;
1842 result
|= (*f
) (t
, d
);
1844 /* If F changed *T, then *T still points at the next item to
1847 t
= &TREE_CHAIN (*t
);
1853 /* Walk the global declarations. Whenever one is found for which P
1854 returns non-zero, call F with its address. If any call to F
1855 returns a non-zero value, return a non-zero value. */
1858 walk_globals (p
, f
, data
)
1859 walk_globals_pred p
;
1863 struct walk_globals_data wgd
;
1868 return walk_namespaces (walk_globals_r
, &wgd
);
1871 /* Call wrapup_globals_declarations for the globals in NAMESPACE. If
1872 DATA is non-NULL, this is the last time we will call
1873 wrapup_global_declarations for this NAMESPACE. */
1876 wrapup_globals_for_namespace (namespace, data
)
1880 tree globals
= cp_namespace_decls (namespace);
1881 int len
= list_length (globals
);
1882 tree
*vec
= (tree
*) alloca (sizeof (tree
) * len
);
1886 int last_time
= (data
!= 0);
1888 if (last_time
&& namespace == global_namespace
)
1889 /* Let compile_file handle the global namespace. */
1892 /* Process the decls in reverse order--earliest first.
1893 Put them into VEC from back to front, then take out from front. */
1894 for (i
= 0, decl
= globals
; i
< len
; i
++, decl
= TREE_CHAIN (decl
))
1895 vec
[len
- i
- 1] = decl
;
1899 check_global_declarations (vec
, len
);
1903 /* Temporarily mark vtables as external. That prevents
1904 wrapup_global_declarations from writing them out; we must process
1905 them ourselves in finish_vtable_vardecl. */
1906 for (i
= 0; i
< len
; ++i
)
1907 if (vtable_decl_p (vec
[i
], /*data=*/0) && !DECL_EXTERNAL (vec
[i
]))
1909 DECL_NOT_REALLY_EXTERN (vec
[i
]) = 1;
1910 DECL_EXTERNAL (vec
[i
]) = 1;
1913 /* Write out any globals that need to be output. */
1914 result
= wrapup_global_declarations (vec
, len
);
1916 /* Undo the hack to DECL_EXTERNAL above. */
1917 for (i
= 0; i
< len
; ++i
)
1918 if (vtable_decl_p (vec
[i
], /*data=*/0)
1919 && DECL_NOT_REALLY_EXTERN (vec
[i
]))
1921 DECL_NOT_REALLY_EXTERN (vec
[i
]) = 0;
1922 DECL_EXTERNAL (vec
[i
]) = 0;
1929 /* Mark ARG (which is really a struct binding_level **) for GC. */
1932 mark_binding_level (arg
)
1935 struct binding_level
*lvl
= *(struct binding_level
**)arg
;
1937 for (; lvl
; lvl
= lvl
->level_chain
)
1939 ggc_mark_tree (lvl
->names
);
1940 ggc_mark_tree (lvl
->tags
);
1941 ggc_mark_tree (lvl
->usings
);
1942 ggc_mark_tree (lvl
->using_directives
);
1943 ggc_mark_tree (lvl
->class_shadowed
);
1944 ggc_mark_tree (lvl
->type_shadowed
);
1945 ggc_mark_tree (lvl
->shadowed_labels
);
1946 ggc_mark_tree (lvl
->blocks
);
1947 ggc_mark_tree (lvl
->this_class
);
1948 ggc_mark_tree (lvl
->incomplete
);
1949 ggc_mark_tree (lvl
->dead_vars_from_for
);
1954 mark_named_label_lists (labs
, uses
)
1958 struct named_label_list
*l
= *(struct named_label_list
**)labs
;
1959 struct named_label_use_list
*u
= *(struct named_label_use_list
**)uses
;
1961 for (; l
; l
= l
->next
)
1964 mark_binding_level (l
->binding_level
);
1965 ggc_mark_tree (l
->old_value
);
1966 ggc_mark_tree (l
->label_decl
);
1967 ggc_mark_tree (l
->bad_decls
);
1970 for (; u
; u
= u
->next
)
1974 /* For debugging. */
1975 static int no_print_functions
= 0;
1976 static int no_print_builtins
= 0;
1979 print_binding_level (lvl
)
1980 struct binding_level
*lvl
;
1984 fprintf (stderr
, " blocks=");
1985 fprintf (stderr
, HOST_PTR_PRINTF
, lvl
->blocks
);
1986 fprintf (stderr
, " n_incomplete=%d parm_flag=%d keep=%d",
1987 list_length (lvl
->incomplete
), lvl
->parm_flag
, lvl
->keep
);
1988 if (lvl
->tag_transparent
)
1989 fprintf (stderr
, " tag-transparent");
1990 if (lvl
->more_cleanups_ok
)
1991 fprintf (stderr
, " more-cleanups-ok");
1992 if (lvl
->have_cleanups
)
1993 fprintf (stderr
, " have-cleanups");
1994 fprintf (stderr
, "\n");
1997 fprintf (stderr
, " names:\t");
1998 /* We can probably fit 3 names to a line? */
1999 for (t
= lvl
->names
; t
; t
= TREE_CHAIN (t
))
2001 if (no_print_functions
&& (TREE_CODE (t
) == FUNCTION_DECL
))
2003 if (no_print_builtins
2004 && (TREE_CODE (t
) == TYPE_DECL
)
2005 && (!strcmp (DECL_SOURCE_FILE (t
),"<built-in>")))
2008 /* Function decls tend to have longer names. */
2009 if (TREE_CODE (t
) == FUNCTION_DECL
)
2016 fprintf (stderr
, "\n\t");
2019 print_node_brief (stderr
, "", t
, 0);
2020 if (t
== error_mark_node
)
2024 fprintf (stderr
, "\n");
2028 fprintf (stderr
, " tags:\t");
2030 for (t
= lvl
->tags
; t
; t
= TREE_CHAIN (t
))
2032 if (TREE_PURPOSE (t
) == NULL_TREE
)
2034 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
2041 fprintf (stderr
, "\n\t");
2044 if (TREE_PURPOSE (t
) == NULL_TREE
)
2046 print_node_brief (stderr
, "<unnamed-typedef", TREE_VALUE (t
), 0);
2047 fprintf (stderr
, ">");
2049 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
2050 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
2053 print_node_brief (stderr
, "<typedef", TREE_PURPOSE (t
), 0);
2054 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
2055 fprintf (stderr
, ">");
2059 fprintf (stderr
, "\n");
2061 if (lvl
->class_shadowed
)
2063 fprintf (stderr
, " class-shadowed:");
2064 for (t
= lvl
->class_shadowed
; t
; t
= TREE_CHAIN (t
))
2066 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
2068 fprintf (stderr
, "\n");
2070 if (lvl
->type_shadowed
)
2072 fprintf (stderr
, " type-shadowed:");
2073 for (t
= lvl
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
2075 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
2077 fprintf (stderr
, "\n");
2082 print_other_binding_stack (stack
)
2083 struct binding_level
*stack
;
2085 struct binding_level
*level
;
2086 for (level
= stack
; level
!= global_binding_level
; level
= level
->level_chain
)
2088 fprintf (stderr
, "binding level ");
2089 fprintf (stderr
, HOST_PTR_PRINTF
, level
);
2090 fprintf (stderr
, "\n");
2091 print_binding_level (level
);
2096 print_binding_stack ()
2098 struct binding_level
*b
;
2099 fprintf (stderr
, "current_binding_level=");
2100 fprintf (stderr
, HOST_PTR_PRINTF
, current_binding_level
);
2101 fprintf (stderr
, "\nclass_binding_level=");
2102 fprintf (stderr
, HOST_PTR_PRINTF
, class_binding_level
);
2103 fprintf (stderr
, "\nglobal_binding_level=");
2104 fprintf (stderr
, HOST_PTR_PRINTF
, global_binding_level
);
2105 fprintf (stderr
, "\n");
2106 if (class_binding_level
)
2108 for (b
= class_binding_level
; b
; b
= b
->level_chain
)
2109 if (b
== current_binding_level
)
2112 b
= class_binding_level
;
2114 b
= current_binding_level
;
2117 b
= current_binding_level
;
2118 print_other_binding_stack (b
);
2119 fprintf (stderr
, "global:\n");
2120 print_binding_level (global_binding_level
);
2123 /* Namespace binding access routines: The namespace_bindings field of
2124 the identifier is polymorphic, with three possible values:
2125 NULL_TREE, a list of CPLUS_BINDINGS, or any other tree_node
2126 indicating the BINDING_VALUE of global_namespace. */
2128 /* Check whether the a binding for the name to scope is known.
2129 Assumes that the bindings of the name are already a list
2130 of bindings. Returns the binding found, or NULL_TREE. */
2133 find_binding (name
, scope
)
2137 tree iter
, prev
= NULL_TREE
;
2139 scope
= ORIGINAL_NAMESPACE (scope
);
2141 for (iter
= IDENTIFIER_NAMESPACE_BINDINGS (name
); iter
;
2142 iter
= TREE_CHAIN (iter
))
2144 my_friendly_assert (TREE_CODE (iter
) == CPLUS_BINDING
, 374);
2145 if (BINDING_SCOPE (iter
) == scope
)
2147 /* Move binding found to the front of the list, so
2148 subsequent lookups will find it faster. */
2151 TREE_CHAIN (prev
) = TREE_CHAIN (iter
);
2152 TREE_CHAIN (iter
) = IDENTIFIER_NAMESPACE_BINDINGS (name
);
2153 IDENTIFIER_NAMESPACE_BINDINGS (name
) = iter
;
2162 /* Always returns a binding for name in scope. If the
2163 namespace_bindings is not a list, convert it to one first.
2164 If no binding is found, make a new one. */
2167 binding_for_name (name
, scope
)
2171 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
2174 scope
= ORIGINAL_NAMESPACE (scope
);
2176 if (b
&& TREE_CODE (b
) != CPLUS_BINDING
)
2178 /* Get rid of optimization for global scope. */
2179 IDENTIFIER_NAMESPACE_BINDINGS (name
) = NULL_TREE
;
2180 BINDING_VALUE (binding_for_name (name
, global_namespace
)) = b
;
2181 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
2183 if (b
&& (result
= find_binding (name
, scope
)))
2185 /* Not found, make a new one. */
2186 result
= make_node (CPLUS_BINDING
);
2187 TREE_CHAIN (result
) = b
;
2188 IDENTIFIER_NAMESPACE_BINDINGS (name
) = result
;
2189 BINDING_SCOPE (result
) = scope
;
2190 BINDING_TYPE (result
) = NULL_TREE
;
2191 BINDING_VALUE (result
) = NULL_TREE
;
2195 /* Return the binding value for name in scope, considering that
2196 namespace_binding may or may not be a list of CPLUS_BINDINGS. */
2199 namespace_binding (name
, scope
)
2203 tree b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
2206 if (scope
== NULL_TREE
)
2207 scope
= global_namespace
;
2208 if (TREE_CODE (b
) != CPLUS_BINDING
)
2209 return (scope
== global_namespace
) ? b
: NULL_TREE
;
2210 name
= find_binding (name
,scope
);
2211 if (name
== NULL_TREE
)
2213 return BINDING_VALUE (name
);
2216 /* Set the binding value for name in scope. If modifying the binding
2217 of global_namespace is attempted, try to optimize it. */
2220 set_namespace_binding (name
, scope
, val
)
2227 if (scope
== NULL_TREE
)
2228 scope
= global_namespace
;
2230 if (scope
== global_namespace
)
2232 b
= IDENTIFIER_NAMESPACE_BINDINGS (name
);
2233 if (b
== NULL_TREE
|| TREE_CODE (b
) != CPLUS_BINDING
)
2235 IDENTIFIER_NAMESPACE_BINDINGS (name
) = val
;
2239 b
= binding_for_name (name
, scope
);
2240 BINDING_VALUE (b
) = val
;
2243 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
2244 select a name that is unique to this compilation unit. */
2247 push_namespace (name
)
2252 int implicit_use
= 0;
2254 if (!global_namespace
)
2256 /* This must be ::. */
2257 my_friendly_assert (name
== get_identifier ("::"), 377);
2262 /* The name of anonymous namespace is unique for the translation
2264 if (!anonymous_namespace_name
)
2265 anonymous_namespace_name
= get_file_function_name ('N');
2266 name
= anonymous_namespace_name
;
2267 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
2269 /* Reopening anonymous namespace. */
2275 /* Check whether this is an extended namespace definition. */
2276 d
= IDENTIFIER_NAMESPACE_VALUE (name
);
2277 if (d
!= NULL_TREE
&& TREE_CODE (d
) == NAMESPACE_DECL
)
2280 if (DECL_NAMESPACE_ALIAS (d
))
2282 cp_error ("namespace alias `%D' not allowed here, assuming `%D'",
2283 d
, DECL_NAMESPACE_ALIAS (d
));
2284 d
= DECL_NAMESPACE_ALIAS (d
);
2291 /* Make a new namespace, binding the name to it. */
2292 d
= build_lang_decl (NAMESPACE_DECL
, name
, void_type_node
);
2293 /* The global namespace is not pushed, and the global binding
2294 level is set elsewhere. */
2297 DECL_CONTEXT (d
) = FROB_CONTEXT (current_namespace
);
2300 declare_namespace_level ();
2301 NAMESPACE_LEVEL (d
) = current_binding_level
;
2305 resume_binding_level (NAMESPACE_LEVEL (d
));
2308 do_using_directive (d
);
2309 /* Enter the name space. */
2310 current_namespace
= d
;
2313 /* Pop from the scope of the current namespace. */
2318 my_friendly_assert (current_namespace
!= global_namespace
, 20010801);
2319 current_namespace
= CP_DECL_CONTEXT (current_namespace
);
2320 /* The binding level is not popped, as it might be re-opened later. */
2321 suspend_binding_level ();
2324 /* Push into the scope of the namespace NS, even if it is deeply
2325 nested within another namespace. */
2328 push_nested_namespace (ns
)
2331 if (ns
== global_namespace
)
2332 push_to_top_level ();
2335 push_nested_namespace (CP_DECL_CONTEXT (ns
));
2336 push_namespace (DECL_NAME (ns
));
2340 /* Pop back from the scope of the namespace NS, which was previously
2341 entered with push_nested_namespace. */
2344 pop_nested_namespace (ns
)
2347 while (ns
!= global_namespace
)
2350 ns
= CP_DECL_CONTEXT (ns
);
2353 pop_from_top_level ();
2357 /* Subroutines for reverting temporarily to top-level for instantiation
2358 of templates and such. We actually need to clear out the class- and
2359 local-value slots of all identifiers, so that only the global values
2360 are at all visible. Simply setting current_binding_level to the global
2361 scope isn't enough, because more binding levels may be pushed. */
2362 struct saved_scope
*scope_chain
;
2364 /* Mark ARG (which is really a struct saved_scope **) for GC. */
2367 mark_saved_scope (arg
)
2370 struct saved_scope
*t
= *(struct saved_scope
**)arg
;
2373 mark_binding_level (&t
->class_bindings
);
2374 ggc_mark_tree (t
->old_bindings
);
2375 ggc_mark_tree (t
->old_namespace
);
2376 ggc_mark_tree (t
->decl_ns_list
);
2377 ggc_mark_tree (t
->class_name
);
2378 ggc_mark_tree (t
->class_type
);
2379 ggc_mark_tree (t
->access_specifier
);
2380 ggc_mark_tree (t
->function_decl
);
2382 ggc_mark_tree_varray (t
->lang_base
);
2383 ggc_mark_tree (t
->lang_name
);
2384 ggc_mark_tree (t
->template_parms
);
2385 ggc_mark_tree (t
->x_previous_class_type
);
2386 ggc_mark_tree (t
->x_previous_class_values
);
2387 ggc_mark_tree (t
->x_saved_tree
);
2388 ggc_mark_tree (t
->incomplete
);
2389 ggc_mark_tree (t
->lookups
);
2391 mark_stmt_tree (&t
->x_stmt_tree
);
2392 mark_binding_level (&t
->bindings
);
2398 store_bindings (names
, old_bindings
)
2399 tree names
, old_bindings
;
2402 tree search_bindings
= old_bindings
;
2404 for (t
= names
; t
; t
= TREE_CHAIN (t
))
2406 tree binding
, t1
, id
;
2408 if (TREE_CODE (t
) == TREE_LIST
)
2409 id
= TREE_PURPOSE (t
);
2414 /* Note that we may have an IDENTIFIER_CLASS_VALUE even when
2415 we have no IDENTIFIER_BINDING if we have left the class
2416 scope, but cached the class-level declarations. */
2417 || !(IDENTIFIER_BINDING (id
) || IDENTIFIER_CLASS_VALUE (id
)))
2420 for (t1
= search_bindings
; t1
; t1
= TREE_CHAIN (t1
))
2421 if (TREE_VEC_ELT (t1
, 0) == id
)
2424 my_friendly_assert (TREE_CODE (id
) == IDENTIFIER_NODE
, 135);
2425 binding
= make_tree_vec (4);
2426 TREE_VEC_ELT (binding
, 0) = id
;
2427 TREE_VEC_ELT (binding
, 1) = REAL_IDENTIFIER_TYPE_VALUE (id
);
2428 TREE_VEC_ELT (binding
, 2) = IDENTIFIER_BINDING (id
);
2429 TREE_VEC_ELT (binding
, 3) = IDENTIFIER_CLASS_VALUE (id
);
2430 IDENTIFIER_BINDING (id
) = NULL_TREE
;
2431 IDENTIFIER_CLASS_VALUE (id
) = NULL_TREE
;
2432 TREE_CHAIN (binding
) = old_bindings
;
2433 old_bindings
= binding
;
2437 return old_bindings
;
2441 maybe_push_to_top_level (pseudo
)
2444 struct saved_scope
*s
;
2445 struct binding_level
*b
;
2449 s
= (struct saved_scope
*) xcalloc (1, sizeof (struct saved_scope
));
2451 b
= scope_chain
? current_binding_level
: 0;
2453 /* If we're in the middle of some function, save our state. */
2457 push_function_context_to (NULL_TREE
);
2462 old_bindings
= NULL_TREE
;
2463 if (scope_chain
&& previous_class_type
)
2464 old_bindings
= store_bindings (previous_class_values
, old_bindings
);
2466 /* Have to include global_binding_level, because class-level decls
2467 aren't listed anywhere useful. */
2468 for (; b
; b
= b
->level_chain
)
2472 /* Template IDs are inserted into the global level. If they were
2473 inserted into namespace level, finish_file wouldn't find them
2474 when doing pending instantiations. Therefore, don't stop at
2475 namespace level, but continue until :: . */
2476 if (b
== global_binding_level
|| (pseudo
&& b
->template_parms_p
))
2479 old_bindings
= store_bindings (b
->names
, old_bindings
);
2480 /* We also need to check class_shadowed to save class-level type
2481 bindings, since pushclass doesn't fill in b->names. */
2482 if (b
->parm_flag
== 2)
2483 old_bindings
= store_bindings (b
->class_shadowed
, old_bindings
);
2485 /* Unwind type-value slots back to top level. */
2486 for (t
= b
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
2487 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t
), TREE_VALUE (t
));
2489 s
->prev
= scope_chain
;
2490 s
->old_bindings
= old_bindings
;
2492 s
->need_pop_function_context
= need_pop
;
2493 s
->function_decl
= current_function_decl
;
2496 current_function_decl
= NULL_TREE
;
2497 VARRAY_TREE_INIT (current_lang_base
, 10, "current_lang_base");
2498 current_lang_name
= lang_name_cplusplus
;
2499 current_namespace
= global_namespace
;
2503 push_to_top_level ()
2505 maybe_push_to_top_level (0);
2509 pop_from_top_level ()
2511 struct saved_scope
*s
= scope_chain
;
2514 /* Clear out class-level bindings cache. */
2515 if (previous_class_type
)
2516 invalidate_class_lookup_cache ();
2518 VARRAY_FREE (current_lang_base
);
2520 scope_chain
= s
->prev
;
2521 for (t
= s
->old_bindings
; t
; t
= TREE_CHAIN (t
))
2523 tree id
= TREE_VEC_ELT (t
, 0);
2525 SET_IDENTIFIER_TYPE_VALUE (id
, TREE_VEC_ELT (t
, 1));
2526 IDENTIFIER_BINDING (id
) = TREE_VEC_ELT (t
, 2);
2527 IDENTIFIER_CLASS_VALUE (id
) = TREE_VEC_ELT (t
, 3);
2530 /* If we were in the middle of compiling a function, restore our
2532 if (s
->need_pop_function_context
)
2533 pop_function_context_from (NULL_TREE
);
2534 current_function_decl
= s
->function_decl
;
2539 /* Push a definition of struct, union or enum tag "name".
2540 into binding_level "b". "type" should be the type node,
2541 We assume that the tag "name" is not already defined.
2543 Note that the definition may really be just a forward reference.
2544 In that case, the TYPE_SIZE will be a NULL_TREE.
2546 C++ gratuitously puts all these tags in the name space. */
2548 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
2549 record the shadowed value for this binding contour. TYPE is
2550 the type that ID maps to. */
2553 set_identifier_type_value_with_scope (id
, type
, b
)
2556 struct binding_level
*b
;
2558 if (!b
->namespace_p
)
2560 /* Shadow the marker, not the real thing, so that the marker
2561 gets restored later. */
2562 tree old_type_value
= REAL_IDENTIFIER_TYPE_VALUE (id
);
2564 = tree_cons (id
, old_type_value
, b
->type_shadowed
);
2568 tree binding
= binding_for_name (id
, current_namespace
);
2569 BINDING_TYPE (binding
) = type
;
2570 /* Store marker instead of real type. */
2571 type
= global_type_node
;
2573 SET_IDENTIFIER_TYPE_VALUE (id
, type
);
2576 /* As set_identifier_type_value_with_scope, but using current_binding_level. */
2579 set_identifier_type_value (id
, type
)
2583 set_identifier_type_value_with_scope (id
, type
, current_binding_level
);
2586 /* Return the type associated with id. */
2589 identifier_type_value (id
)
2592 /* There is no type with that name, anywhere. */
2593 if (REAL_IDENTIFIER_TYPE_VALUE (id
) == NULL_TREE
)
2595 /* This is not the type marker, but the real thing. */
2596 if (REAL_IDENTIFIER_TYPE_VALUE (id
) != global_type_node
)
2597 return REAL_IDENTIFIER_TYPE_VALUE (id
);
2598 /* Have to search for it. It must be on the global level, now.
2599 Ask lookup_name not to return non-types. */
2600 id
= lookup_name_real (id
, 2, 1, 0);
2602 return TREE_TYPE (id
);
2606 /* Pop off extraneous binding levels left over due to syntax errors.
2608 We don't pop past namespaces, as they might be valid. */
2613 #ifdef DEBUG_CP_BINDING_LEVELS
2614 fprintf (stderr
, "XXX entering pop_everything ()\n");
2616 while (!toplevel_bindings_p ())
2618 if (current_binding_level
->parm_flag
== 2)
2619 pop_nested_class ();
2623 #ifdef DEBUG_CP_BINDING_LEVELS
2624 fprintf (stderr
, "XXX leaving pop_everything ()\n");
2628 /* The type TYPE is being declared. If it is a class template, or a
2629 specialization of a class template, do any processing required and
2630 perform error-checking. If IS_FRIEND is non-zero, this TYPE is
2631 being declared a friend. B is the binding level at which this TYPE
2634 Returns the TYPE_DECL for TYPE, which may have been altered by this
2638 maybe_process_template_type_declaration (type
, globalize
, b
)
2641 struct binding_level
* b
;
2643 tree decl
= TYPE_NAME (type
);
2645 if (processing_template_parmlist
)
2646 /* You can't declare a new template type in a template parameter
2647 list. But, you can declare a non-template type:
2649 template <class A*> struct S;
2651 is a forward-declaration of `A'. */
2655 maybe_check_template_type (type
);
2657 my_friendly_assert (IS_AGGR_TYPE (type
)
2658 || TREE_CODE (type
) == ENUMERAL_TYPE
, 0);
2661 if (processing_template_decl
)
2663 /* This may change after the call to
2664 push_template_decl_real, but we want the original value. */
2665 tree name
= DECL_NAME (decl
);
2667 decl
= push_template_decl_real (decl
, globalize
);
2668 /* If the current binding level is the binding level for the
2669 template parameters (see the comment in
2670 begin_template_parm_list) and the enclosing level is a class
2671 scope, and we're not looking at a friend, push the
2672 declaration of the member class into the class scope. In the
2673 friend case, push_template_decl will already have put the
2674 friend into global scope, if appropriate. */
2675 if (TREE_CODE (type
) != ENUMERAL_TYPE
2676 && !globalize
&& b
->template_parms_p
2677 && b
->level_chain
->parm_flag
== 2)
2679 finish_member_declaration (CLASSTYPE_TI_TEMPLATE (type
));
2680 /* Put this tag on the list of tags for the class, since
2681 that won't happen below because B is not the class
2682 binding level, but is instead the pseudo-global level. */
2683 b
->level_chain
->tags
=
2684 tree_cons (name
, type
, b
->level_chain
->tags
);
2685 if (!COMPLETE_TYPE_P (current_class_type
))
2686 CLASSTYPE_TAGS (current_class_type
) = b
->level_chain
->tags
;
2694 /* In C++, you don't have to write `struct S' to refer to `S'; you
2695 can just use `S'. We accomplish this by creating a TYPE_DECL as
2696 if the user had written `typedef struct S S'. Create and return
2697 the TYPE_DECL for TYPE. */
2700 create_implicit_typedef (name
, type
)
2706 decl
= build_decl (TYPE_DECL
, name
, type
);
2707 DECL_ARTIFICIAL (decl
) = 1;
2708 /* There are other implicit type declarations, like the one *within*
2709 a class that allows you to write `S::S'. We must distinguish
2711 SET_DECL_IMPLICIT_TYPEDEF_P (decl
);
2712 TYPE_NAME (type
) = decl
;
2717 /* Remember a local name for name-mangling purposes. */
2720 push_local_name (decl
)
2727 VARRAY_TREE_INIT (local_names
, 8, "local_names");
2729 name
= DECL_NAME (decl
);
2731 nelts
= VARRAY_ACTIVE_SIZE (local_names
);
2732 for (i
= 0; i
< nelts
; i
++)
2734 t
= VARRAY_TREE (local_names
, i
);
2735 if (DECL_NAME (t
) == name
)
2737 if (!DECL_LANG_SPECIFIC (decl
))
2738 retrofit_lang_decl (decl
);
2739 if (DECL_LANG_SPECIFIC (t
))
2740 DECL_DISCRIMINATOR (decl
) = DECL_DISCRIMINATOR (t
) + 1;
2742 DECL_DISCRIMINATOR (decl
) = 1;
2744 VARRAY_TREE (local_names
, i
) = decl
;
2749 VARRAY_PUSH_TREE (local_names
, decl
);
2752 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2753 Normally put it into the inner-most non-tag-transparent scope,
2754 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2755 The latter is needed for implicit declarations. */
2758 pushtag (name
, type
, globalize
)
2762 register struct binding_level
*b
;
2764 b
= current_binding_level
;
2765 while (b
->tag_transparent
2766 || (b
->parm_flag
== 2
2768 /* We may be defining a new type in the initializer
2769 of a static member variable. We allow this when
2770 not pedantic, and it is particularly useful for
2771 type punning via an anonymous union. */
2772 || COMPLETE_TYPE_P (b
->this_class
))))
2775 b
->tags
= tree_cons (name
, type
, b
->tags
);
2779 /* Do C++ gratuitous typedefing. */
2780 if (IDENTIFIER_TYPE_VALUE (name
) != type
)
2782 register tree d
= NULL_TREE
;
2784 tree context
= TYPE_CONTEXT (type
);
2788 tree cs
= current_scope ();
2792 else if (cs
!= NULL_TREE
&& TYPE_P (cs
))
2793 /* When declaring a friend class of a local class, we want
2794 to inject the newly named class into the scope
2795 containing the local class, not the namespace scope. */
2796 context
= decl_function_context (get_type_decl (cs
));
2799 context
= current_namespace
;
2801 if ((b
->template_parms_p
&& b
->level_chain
->parm_flag
== 2)
2802 || b
->parm_flag
== 2)
2805 if (current_lang_name
== lang_name_java
)
2806 TYPE_FOR_JAVA (type
) = 1;
2808 d
= create_implicit_typedef (name
, type
);
2809 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
2811 set_identifier_type_value_with_scope (name
, type
, b
);
2813 d
= maybe_process_template_type_declaration (type
,
2816 if (b
->parm_flag
== 2)
2818 if (!PROCESSING_REAL_TEMPLATE_DECL_P ())
2819 /* Put this TYPE_DECL on the TYPE_FIELDS list for the
2820 class. But if it's a member template class, we
2821 want the TEMPLATE_DECL, not the TYPE_DECL, so this
2823 finish_member_declaration (d
);
2825 pushdecl_class_level (d
);
2828 d
= pushdecl_with_scope (d
, b
);
2830 /* FIXME what if it gets a name from typedef? */
2831 if (ANON_AGGRNAME_P (name
))
2832 DECL_IGNORED_P (d
) = 1;
2834 TYPE_CONTEXT (type
) = DECL_CONTEXT (d
);
2836 /* If this is a local class, keep track of it. We need this
2837 information for name-mangling, and so that it is possible to find
2838 all function definitions in a translation unit in a convenient
2839 way. (It's otherwise tricky to find a member function definition
2840 it's only pointed to from within a local class.) */
2841 if (TYPE_CONTEXT (type
)
2842 && TREE_CODE (TYPE_CONTEXT (type
)) == FUNCTION_DECL
2843 && !processing_template_decl
)
2844 VARRAY_PUSH_TREE (local_classes
, type
);
2846 if (b
->parm_flag
== 2)
2848 if (!COMPLETE_TYPE_P (current_class_type
))
2849 CLASSTYPE_TAGS (current_class_type
) = b
->tags
;
2853 if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
2854 /* Use the canonical TYPE_DECL for this node. */
2855 TYPE_STUB_DECL (type
) = TYPE_NAME (type
);
2858 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2859 will be the tagged type we just added to the current
2860 binding level. This fake NULL-named TYPE_DECL node helps
2861 dwarfout.c to know when it needs to output a
2862 representation of a tagged type, and it also gives us a
2863 convenient place to record the "scope start" address for
2866 tree d
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
2867 TYPE_STUB_DECL (type
) = pushdecl_with_scope (d
, b
);
2871 /* Counter used to create anonymous type names. */
2873 static int anon_cnt
= 0;
2875 /* Return an IDENTIFIER which can be used as a name for
2876 anonymous structs and unions. */
2883 sprintf (buf
, ANON_AGGRNAME_FORMAT
, anon_cnt
++);
2884 return get_identifier (buf
);
2887 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2888 This keeps dbxout from getting confused. */
2893 register struct binding_level
*b
;
2895 static int last_cnt
= 0;
2897 /* Fast out if no new anon names were declared. */
2898 if (last_cnt
== anon_cnt
)
2901 b
= current_binding_level
;
2902 while (b
->tag_transparent
)
2907 /* A NULL purpose means we have already processed all tags
2908 from here to the end of the list. */
2909 if (TREE_PURPOSE (tags
) == NULL_TREE
)
2911 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags
)))
2912 TREE_PURPOSE (tags
) = NULL_TREE
;
2913 tags
= TREE_CHAIN (tags
);
2915 last_cnt
= anon_cnt
;
2918 /* Subroutine of duplicate_decls: return truthvalue of whether
2919 or not types of these decls match.
2921 For C++, we must compare the parameter list so that `int' can match
2922 `int&' in a parameter position, but `int&' is not confused with
2926 decls_match (newdecl
, olddecl
)
2927 tree newdecl
, olddecl
;
2931 if (newdecl
== olddecl
)
2934 if (TREE_CODE (newdecl
) != TREE_CODE (olddecl
))
2935 /* If the two DECLs are not even the same kind of thing, we're not
2936 interested in their types. */
2939 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2941 tree f1
= TREE_TYPE (newdecl
);
2942 tree f2
= TREE_TYPE (olddecl
);
2943 tree p1
= TYPE_ARG_TYPES (f1
);
2944 tree p2
= TYPE_ARG_TYPES (f2
);
2946 if (CP_DECL_CONTEXT (newdecl
) != CP_DECL_CONTEXT (olddecl
)
2947 && ! (DECL_EXTERN_C_P (newdecl
)
2948 && DECL_EXTERN_C_P (olddecl
)))
2951 if (TREE_CODE (f1
) != TREE_CODE (f2
))
2954 if (same_type_p (TREE_TYPE (f1
), TREE_TYPE (f2
)))
2956 if (p2
== NULL_TREE
&& DECL_EXTERN_C_P (olddecl
)
2957 && (DECL_BUILT_IN (olddecl
)
2958 #ifndef NO_IMPLICIT_EXTERN_C
2959 || (DECL_IN_SYSTEM_HEADER (newdecl
) && !DECL_CLASS_SCOPE_P (newdecl
))
2960 || (DECL_IN_SYSTEM_HEADER (olddecl
) && !DECL_CLASS_SCOPE_P (olddecl
))
2964 types_match
= self_promoting_args_p (p1
);
2965 if (p1
== void_list_node
)
2966 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2968 #ifndef NO_IMPLICIT_EXTERN_C
2969 else if (p1
== NULL_TREE
2970 && (DECL_EXTERN_C_P (olddecl
)
2971 && DECL_IN_SYSTEM_HEADER (olddecl
)
2972 && !DECL_CLASS_SCOPE_P (olddecl
))
2973 && (DECL_EXTERN_C_P (newdecl
)
2974 && DECL_IN_SYSTEM_HEADER (newdecl
)
2975 && !DECL_CLASS_SCOPE_P (newdecl
)))
2977 types_match
= self_promoting_args_p (p2
);
2978 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2982 types_match
= compparms (p1
, p2
);
2987 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2989 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
2990 DECL_TEMPLATE_PARMS (olddecl
)))
2993 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
))
2994 != TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)))
2997 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
3000 types_match
= decls_match (DECL_TEMPLATE_RESULT (olddecl
),
3001 DECL_TEMPLATE_RESULT (newdecl
));
3005 if (TREE_TYPE (newdecl
) == error_mark_node
)
3006 types_match
= TREE_TYPE (olddecl
) == error_mark_node
;
3007 else if (TREE_TYPE (olddecl
) == NULL_TREE
)
3008 types_match
= TREE_TYPE (newdecl
) == NULL_TREE
;
3009 else if (TREE_TYPE (newdecl
) == NULL_TREE
)
3012 types_match
= comptypes (TREE_TYPE (newdecl
),
3013 TREE_TYPE (olddecl
),
3014 COMPARE_REDECLARATION
);
3020 /* If NEWDECL is `static' and an `extern' was seen previously,
3021 warn about it. OLDDECL is the previous declaration.
3023 Note that this does not apply to the C++ case of declaring
3024 a variable `extern const' and then later `const'.
3026 Don't complain about built-in functions, since they are beyond
3027 the user's control. */
3030 warn_extern_redeclared_static (newdecl
, olddecl
)
3031 tree newdecl
, olddecl
;
3033 static const char *const explicit_extern_static_warning
3034 = "`%D' was declared `extern' and later `static'";
3035 static const char *const implicit_extern_static_warning
3036 = "`%D' was declared implicitly `extern' and later `static'";
3040 if (TREE_CODE (newdecl
) == TYPE_DECL
3041 || TREE_CODE (newdecl
) == TEMPLATE_DECL
3042 || TREE_CODE (newdecl
) == CONST_DECL
)
3045 /* Don't get confused by static member functions; that's a different
3047 if (TREE_CODE (newdecl
) == FUNCTION_DECL
3048 && DECL_STATIC_FUNCTION_P (newdecl
))
3051 /* If the old declaration was `static', or the new one isn't, then
3052 then everything is OK. */
3053 if (DECL_THIS_STATIC (olddecl
) || !DECL_THIS_STATIC (newdecl
))
3056 /* It's OK to declare a builtin function as `static'. */
3057 if (TREE_CODE (olddecl
) == FUNCTION_DECL
3058 && DECL_ARTIFICIAL (olddecl
))
3061 name
= DECL_ASSEMBLER_NAME (newdecl
);
3062 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name
)
3063 ? implicit_extern_static_warning
3064 : explicit_extern_static_warning
, newdecl
);
3065 cp_pedwarn_at ("previous declaration of `%D'", olddecl
);
3068 /* Handle when a new declaration NEWDECL has the same name as an old
3069 one OLDDECL in the same binding contour. Prints an error message
3072 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
3073 Otherwise, return 0. */
3076 duplicate_decls (newdecl
, olddecl
)
3077 tree newdecl
, olddecl
;
3079 unsigned olddecl_uid
= DECL_UID (olddecl
);
3080 int olddecl_friend
= 0, types_match
= 0;
3081 int new_defines_function
= 0;
3083 if (newdecl
== olddecl
)
3086 types_match
= decls_match (newdecl
, olddecl
);
3088 /* If either the type of the new decl or the type of the old decl is an
3089 error_mark_node, then that implies that we have already issued an
3090 error (earlier) for some bogus type specification, and in that case,
3091 it is rather pointless to harass the user with yet more error message
3092 about the same declaration, so just pretend the types match here. */
3093 if (TREE_TYPE (newdecl
) == error_mark_node
3094 || TREE_TYPE (olddecl
) == error_mark_node
)
3097 if (DECL_P (olddecl
)
3098 && TREE_CODE (newdecl
) == FUNCTION_DECL
3099 && TREE_CODE (olddecl
) == FUNCTION_DECL
3100 && (DECL_UNINLINABLE (newdecl
) || DECL_UNINLINABLE (olddecl
)))
3102 if (DECL_DECLARED_INLINE_P (newdecl
)
3103 && DECL_UNINLINABLE (newdecl
)
3104 && lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl
)))
3105 /* Already warned elsewhere. */;
3106 else if (DECL_DECLARED_INLINE_P (olddecl
)
3107 && DECL_UNINLINABLE (olddecl
)
3108 && lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl
)))
3109 /* Already warned. */;
3110 else if (DECL_DECLARED_INLINE_P (newdecl
)
3111 && DECL_UNINLINABLE (olddecl
)
3112 && lookup_attribute ("noinline", DECL_ATTRIBUTES (olddecl
)))
3114 warning_with_decl (newdecl
,
3115 "function `%s' redeclared as inline");
3116 warning_with_decl (olddecl
,
3117 "previous declaration of function `%s' with attribute noinline");
3119 else if (DECL_DECLARED_INLINE_P (olddecl
)
3120 && DECL_UNINLINABLE (newdecl
)
3121 && lookup_attribute ("noinline", DECL_ATTRIBUTES (newdecl
)))
3123 warning_with_decl (newdecl
,
3124 "function `%s' redeclared with attribute noinline");
3125 warning_with_decl (olddecl
,
3126 "previous declaration of function `%s' was inline");
3130 /* Check for redeclaration and other discrepancies. */
3131 if (TREE_CODE (olddecl
) == FUNCTION_DECL
3132 && DECL_ARTIFICIAL (olddecl
))
3134 if (TREE_CODE (newdecl
) != FUNCTION_DECL
)
3136 /* If you declare a built-in or predefined function name as static,
3137 the old definition is overridden, but optionally warn this was a
3138 bad choice of name. */
3139 if (! TREE_PUBLIC (newdecl
))
3142 cp_warning ("shadowing %s function `%#D'",
3143 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
3145 /* Discard the old built-in function. */
3148 /* If the built-in is not ansi, then programs can override
3149 it even globally without an error. */
3150 else if (! DECL_BUILT_IN (olddecl
))
3151 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
3155 cp_error ("declaration of `%#D'", newdecl
);
3156 cp_error ("conflicts with built-in declaration `%#D'",
3161 else if (!types_match
)
3163 if ((DECL_EXTERN_C_P (newdecl
)
3164 && DECL_EXTERN_C_P (olddecl
))
3165 || compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
3166 TYPE_ARG_TYPES (TREE_TYPE (olddecl
))))
3168 /* A near match; override the builtin. */
3170 if (TREE_PUBLIC (newdecl
))
3172 cp_warning ("new declaration `%#D'", newdecl
);
3173 cp_warning ("ambiguates built-in declaration `%#D'",
3176 else if (warn_shadow
)
3177 cp_warning ("shadowing %s function `%#D'",
3178 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
3182 /* Discard the old built-in function. */
3186 if (DECL_THIS_STATIC (newdecl
) && !DECL_THIS_STATIC (olddecl
))
3188 /* If a builtin function is redeclared as `static', merge
3189 the declarations, but make the original one static. */
3190 DECL_THIS_STATIC (olddecl
) = 1;
3191 TREE_PUBLIC (olddecl
) = 0;
3193 /* Make the old declaration consistent with the new one so
3194 that all remnants of the builtin-ness of this function
3195 will be banished. */
3196 SET_DECL_LANGUAGE (olddecl
, DECL_LANGUAGE (newdecl
));
3197 SET_DECL_RTL (olddecl
, DECL_RTL (newdecl
));
3198 COPY_DECL_ASSEMBLER_NAME (olddecl
, newdecl
);
3199 SET_IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (newdecl
),
3203 else if (TREE_CODE (olddecl
) != TREE_CODE (newdecl
))
3205 if ((TREE_CODE (olddecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (olddecl
)
3206 && TREE_CODE (newdecl
) != TYPE_DECL
3207 && ! (TREE_CODE (newdecl
) == TEMPLATE_DECL
3208 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
))
3209 || (TREE_CODE (newdecl
) == TYPE_DECL
&& DECL_ARTIFICIAL (newdecl
)
3210 && TREE_CODE (olddecl
) != TYPE_DECL
3211 && ! (TREE_CODE (olddecl
) == TEMPLATE_DECL
3212 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
))
3215 /* We do nothing special here, because C++ does such nasty
3216 things with TYPE_DECLs. Instead, just let the TYPE_DECL
3217 get shadowed, and know that if we need to find a TYPE_DECL
3218 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
3219 slot of the identifier. */
3223 if ((TREE_CODE (newdecl
) == FUNCTION_DECL
3224 && DECL_FUNCTION_TEMPLATE_P (olddecl
))
3225 || (TREE_CODE (olddecl
) == FUNCTION_DECL
3226 && DECL_FUNCTION_TEMPLATE_P (newdecl
)))
3229 cp_error ("`%#D' redeclared as different kind of symbol", newdecl
);
3230 if (TREE_CODE (olddecl
) == TREE_LIST
)
3231 olddecl
= TREE_VALUE (olddecl
);
3232 cp_error_at ("previous declaration of `%#D'", olddecl
);
3234 /* New decl is completely inconsistent with the old one =>
3235 tell caller to replace the old one. */
3239 else if (!types_match
)
3241 if (CP_DECL_CONTEXT (newdecl
) != CP_DECL_CONTEXT (olddecl
))
3242 /* These are certainly not duplicate declarations; they're
3243 from different scopes. */
3246 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
3248 /* The name of a class template may not be declared to refer to
3249 any other template, class, function, object, namespace, value,
3250 or type in the same scope. */
3251 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == TYPE_DECL
3252 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
3254 cp_error ("declaration of template `%#D'", newdecl
);
3255 cp_error_at ("conflicts with previous declaration `%#D'",
3258 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == FUNCTION_DECL
3259 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
3260 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
))),
3261 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl
))))
3262 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl
),
3263 DECL_TEMPLATE_PARMS (olddecl
)))
3265 cp_error ("new declaration `%#D'", newdecl
);
3266 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
3270 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3272 if (DECL_EXTERN_C_P (newdecl
) && DECL_EXTERN_C_P (olddecl
))
3274 cp_error ("declaration of C function `%#D' conflicts with",
3276 cp_error_at ("previous declaration `%#D' here", olddecl
);
3278 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
3279 TYPE_ARG_TYPES (TREE_TYPE (olddecl
))))
3281 cp_error ("new declaration `%#D'", newdecl
);
3282 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
3288 /* Already complained about this, so don't do so again. */
3289 else if (current_class_type
== NULL_TREE
3290 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl
)) != current_class_type
)
3292 cp_error ("conflicting types for `%#D'", newdecl
);
3293 cp_error_at ("previous declaration as `%#D'", olddecl
);
3296 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
3297 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl
)
3298 && (!DECL_TEMPLATE_INFO (newdecl
)
3299 || (DECL_TI_TEMPLATE (newdecl
)
3300 != DECL_TI_TEMPLATE (olddecl
))))
3301 || (DECL_TEMPLATE_SPECIALIZATION (newdecl
)
3302 && (!DECL_TEMPLATE_INFO (olddecl
)
3303 || (DECL_TI_TEMPLATE (olddecl
)
3304 != DECL_TI_TEMPLATE (newdecl
))))))
3305 /* It's OK to have a template specialization and a non-template
3306 with the same type, or to have specializations of two
3307 different templates with the same type. Note that if one is a
3308 specialization, and the other is an instantiation of the same
3309 template, that we do not exit at this point. That situation
3310 can occur if we instantiate a template class, and then
3311 specialize one of its methods. This situation is legal, but
3312 the declarations must be merged in the usual way. */
3314 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
3315 && ((DECL_TEMPLATE_INSTANTIATION (olddecl
)
3316 && !DECL_USE_TEMPLATE (newdecl
))
3317 || (DECL_TEMPLATE_INSTANTIATION (newdecl
)
3318 && !DECL_USE_TEMPLATE (olddecl
))))
3319 /* One of the declarations is a template instantiation, and the
3320 other is not a template at all. That's OK. */
3322 else if (TREE_CODE (newdecl
) == NAMESPACE_DECL
3323 && DECL_NAMESPACE_ALIAS (newdecl
)
3324 && DECL_NAMESPACE_ALIAS (newdecl
) == DECL_NAMESPACE_ALIAS (olddecl
))
3325 /* Redeclaration of namespace alias, ignore it. */
3329 const char *errmsg
= redeclaration_error_message (newdecl
, olddecl
);
3332 cp_error (errmsg
, newdecl
);
3333 if (DECL_NAME (olddecl
) != NULL_TREE
)
3334 cp_error_at ((DECL_INITIAL (olddecl
)
3335 && namespace_bindings_p ())
3336 ? "`%#D' previously defined here"
3337 : "`%#D' previously declared here", olddecl
);
3339 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
3340 && DECL_INITIAL (olddecl
) != NULL_TREE
3341 && TYPE_ARG_TYPES (TREE_TYPE (olddecl
)) == NULL_TREE
3342 && TYPE_ARG_TYPES (TREE_TYPE (newdecl
)) != NULL_TREE
)
3344 /* Prototype decl follows defn w/o prototype. */
3345 cp_warning_at ("prototype for `%#D'", newdecl
);
3346 cp_warning_at ("follows non-prototype definition here", olddecl
);
3348 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
3349 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
))
3351 /* extern "C" int foo ();
3352 int foo () { bar (); }
3354 if (current_lang_depth () == 0)
3355 SET_DECL_LANGUAGE (newdecl
, DECL_LANGUAGE (olddecl
));
3358 cp_error_at ("previous declaration of `%#D' with %L linkage",
3359 olddecl
, DECL_LANGUAGE (olddecl
));
3360 cp_error ("conflicts with new declaration with %L linkage",
3361 DECL_LANGUAGE (newdecl
));
3365 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_USE_TEMPLATE (olddecl
))
3367 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
)
3369 tree t1
= TYPE_ARG_TYPES (TREE_TYPE (olddecl
));
3370 tree t2
= TYPE_ARG_TYPES (TREE_TYPE (newdecl
));
3373 if (TREE_CODE (TREE_TYPE (newdecl
)) == METHOD_TYPE
)
3374 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
);
3376 for (; t1
&& t1
!= void_list_node
;
3377 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
), i
++)
3378 if (TREE_PURPOSE (t1
) && TREE_PURPOSE (t2
))
3380 if (1 == simple_cst_equal (TREE_PURPOSE (t1
),
3385 cp_pedwarn ("default argument given for parameter %d of `%#D'",
3387 cp_pedwarn_at ("after previous specification in `%#D'",
3393 cp_error ("default argument given for parameter %d of `%#D'",
3395 cp_error_at ("after previous specification in `%#D'",
3400 if (DECL_DECLARED_INLINE_P (newdecl
)
3401 && ! DECL_DECLARED_INLINE_P (olddecl
)
3402 && TREE_ADDRESSABLE (olddecl
) && warn_inline
)
3404 cp_warning ("`%#D' was used before it was declared inline",
3406 cp_warning_at ("previous non-inline declaration here",
3412 /* If new decl is `static' and an `extern' was seen previously,
3414 warn_extern_redeclared_static (newdecl
, olddecl
);
3416 /* We have committed to returning 1 at this point. */
3417 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3419 /* Now that functions must hold information normally held
3420 by field decls, there is extra work to do so that
3421 declaration information does not get destroyed during
3423 if (DECL_VINDEX (olddecl
))
3424 DECL_VINDEX (newdecl
) = DECL_VINDEX (olddecl
);
3425 if (DECL_VIRTUAL_CONTEXT (olddecl
))
3426 DECL_VIRTUAL_CONTEXT (newdecl
) = DECL_VIRTUAL_CONTEXT (olddecl
);
3427 if (DECL_CONTEXT (olddecl
))
3428 DECL_CONTEXT (newdecl
) = DECL_CONTEXT (olddecl
);
3429 if (DECL_PENDING_INLINE_INFO (newdecl
) == 0)
3430 DECL_PENDING_INLINE_INFO (newdecl
) = DECL_PENDING_INLINE_INFO (olddecl
);
3431 DECL_STATIC_CONSTRUCTOR (newdecl
) |= DECL_STATIC_CONSTRUCTOR (olddecl
);
3432 DECL_STATIC_DESTRUCTOR (newdecl
) |= DECL_STATIC_DESTRUCTOR (olddecl
);
3433 DECL_PURE_VIRTUAL_P (newdecl
) |= DECL_PURE_VIRTUAL_P (olddecl
);
3434 DECL_VIRTUAL_P (newdecl
) |= DECL_VIRTUAL_P (olddecl
);
3435 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl
) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl
);
3436 DECL_THIS_STATIC (newdecl
) |= DECL_THIS_STATIC (olddecl
);
3437 if (DECL_OVERLOADED_OPERATOR_P (olddecl
) != ERROR_MARK
)
3438 SET_OVERLOADED_OPERATOR_CODE
3439 (newdecl
, DECL_OVERLOADED_OPERATOR_P (olddecl
));
3440 new_defines_function
= DECL_INITIAL (newdecl
) != NULL_TREE
;
3442 /* Optionally warn about more than one declaration for the same
3443 name, but don't warn about a function declaration followed by a
3445 if (warn_redundant_decls
&& ! DECL_ARTIFICIAL (olddecl
)
3446 && !(new_defines_function
&& DECL_INITIAL (olddecl
) == NULL_TREE
)
3447 /* Don't warn about extern decl followed by definition. */
3448 && !(DECL_EXTERNAL (olddecl
) && ! DECL_EXTERNAL (newdecl
))
3449 /* Don't warn about friends, let add_friend take care of it. */
3450 && ! (DECL_FRIEND_P (newdecl
) || DECL_FRIEND_P (olddecl
)))
3452 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl
);
3453 cp_warning_at ("previous declaration of `%D'", olddecl
);
3457 /* Deal with C++: must preserve virtual function table size. */
3458 if (TREE_CODE (olddecl
) == TYPE_DECL
)
3460 register tree newtype
= TREE_TYPE (newdecl
);
3461 register tree oldtype
= TREE_TYPE (olddecl
);
3463 if (newtype
!= error_mark_node
&& oldtype
!= error_mark_node
3464 && TYPE_LANG_SPECIFIC (newtype
) && TYPE_LANG_SPECIFIC (oldtype
))
3466 CLASSTYPE_VSIZE (newtype
) = CLASSTYPE_VSIZE (oldtype
);
3467 CLASSTYPE_FRIEND_CLASSES (newtype
)
3468 = CLASSTYPE_FRIEND_CLASSES (oldtype
);
3471 DECL_ORIGINAL_TYPE (newdecl
) = DECL_ORIGINAL_TYPE (olddecl
);
3474 /* Copy all the DECL_... slots specified in the new decl
3475 except for any that we copy here from the old type. */
3476 DECL_ATTRIBUTES (newdecl
)
3477 = (*targetm
.merge_decl_attributes
) (olddecl
, newdecl
);
3479 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
3481 TREE_TYPE (olddecl
) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
));
3482 DECL_TEMPLATE_SPECIALIZATIONS (olddecl
)
3483 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl
),
3484 DECL_TEMPLATE_SPECIALIZATIONS (newdecl
));
3486 /* If the new declaration is a definition, update the file and
3487 line information on the declaration. */
3488 if (DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)) == NULL_TREE
3489 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
)) != NULL_TREE
)
3491 DECL_SOURCE_LINE (olddecl
)
3492 = DECL_SOURCE_LINE (DECL_TEMPLATE_RESULT (olddecl
))
3493 = DECL_SOURCE_LINE (newdecl
);
3494 DECL_SOURCE_FILE (olddecl
)
3495 = DECL_SOURCE_FILE (DECL_TEMPLATE_RESULT (olddecl
))
3496 = DECL_SOURCE_FILE (newdecl
);
3504 /* Automatically handles default parameters. */
3505 tree oldtype
= TREE_TYPE (olddecl
);
3508 /* Merge the data types specified in the two decls. */
3509 newtype
= common_type (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
));
3511 /* If common_type produces a non-typedef type, just use the old type. */
3512 if (TREE_CODE (newdecl
) == TYPE_DECL
3513 && newtype
== DECL_ORIGINAL_TYPE (newdecl
))
3516 if (TREE_CODE (newdecl
) == VAR_DECL
)
3517 DECL_THIS_EXTERN (newdecl
) |= DECL_THIS_EXTERN (olddecl
);
3518 /* Do this after calling `common_type' so that default
3519 parameters don't confuse us. */
3520 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
3521 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
))
3522 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
))))
3524 TREE_TYPE (newdecl
) = build_exception_variant (newtype
,
3525 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)));
3526 TREE_TYPE (olddecl
) = build_exception_variant (newtype
,
3527 TYPE_RAISES_EXCEPTIONS (oldtype
));
3529 if ((pedantic
|| ! DECL_IN_SYSTEM_HEADER (olddecl
))
3530 && DECL_SOURCE_LINE (olddecl
) != 0
3532 && !comp_except_specs (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)),
3533 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
)), 1))
3535 cp_error ("declaration of `%F' throws different exceptions",
3537 cp_error_at ("than previous declaration `%F'", olddecl
);
3540 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
) = newtype
;
3542 /* Lay the type out, unless already done. */
3543 if (! same_type_p (newtype
, oldtype
)
3544 && TREE_TYPE (newdecl
) != error_mark_node
3545 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3546 layout_type (TREE_TYPE (newdecl
));
3548 if ((TREE_CODE (newdecl
) == VAR_DECL
3549 || TREE_CODE (newdecl
) == PARM_DECL
3550 || TREE_CODE (newdecl
) == RESULT_DECL
3551 || TREE_CODE (newdecl
) == FIELD_DECL
3552 || TREE_CODE (newdecl
) == TYPE_DECL
)
3553 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
3554 layout_decl (newdecl
, 0);
3556 /* Merge the type qualifiers. */
3557 if (TREE_READONLY (newdecl
))
3558 TREE_READONLY (olddecl
) = 1;
3559 if (TREE_THIS_VOLATILE (newdecl
))
3560 TREE_THIS_VOLATILE (olddecl
) = 1;
3562 /* Merge the initialization information. */
3563 if (DECL_INITIAL (newdecl
) == NULL_TREE
3564 && DECL_INITIAL (olddecl
) != NULL_TREE
)
3566 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
3567 DECL_SOURCE_FILE (newdecl
) = DECL_SOURCE_FILE (olddecl
);
3568 DECL_SOURCE_LINE (newdecl
) = DECL_SOURCE_LINE (olddecl
);
3569 if (CAN_HAVE_FULL_LANG_DECL_P (newdecl
)
3570 && DECL_LANG_SPECIFIC (newdecl
)
3571 && DECL_LANG_SPECIFIC (olddecl
))
3572 DECL_SAVED_TREE (newdecl
) = DECL_SAVED_TREE (olddecl
);
3575 /* Merge the section attribute.
3576 We want to issue an error if the sections conflict but that must be
3577 done later in decl_attributes since we are called before attributes
3579 if (DECL_SECTION_NAME (newdecl
) == NULL_TREE
)
3580 DECL_SECTION_NAME (newdecl
) = DECL_SECTION_NAME (olddecl
);
3582 /* Keep the old rtl since we can safely use it. */
3583 COPY_DECL_RTL (olddecl
, newdecl
);
3585 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3587 DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (newdecl
)
3588 |= DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (olddecl
);
3589 DECL_NO_LIMIT_STACK (newdecl
)
3590 |= DECL_NO_LIMIT_STACK (olddecl
);
3593 /* If cannot merge, then use the new type and qualifiers,
3594 and don't preserve the old rtl. */
3597 /* Clean out any memory we had of the old declaration. */
3598 tree oldstatic
= value_member (olddecl
, static_aggregates
);
3600 TREE_VALUE (oldstatic
) = error_mark_node
;
3602 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
3603 TREE_READONLY (olddecl
) = TREE_READONLY (newdecl
);
3604 TREE_THIS_VOLATILE (olddecl
) = TREE_THIS_VOLATILE (newdecl
);
3605 TREE_SIDE_EFFECTS (olddecl
) = TREE_SIDE_EFFECTS (newdecl
);
3608 /* Merge the storage class information. */
3609 DECL_WEAK (newdecl
) |= DECL_WEAK (olddecl
);
3610 DECL_ONE_ONLY (newdecl
) |= DECL_ONE_ONLY (olddecl
);
3611 DECL_DEFER_OUTPUT (newdecl
) |= DECL_DEFER_OUTPUT (olddecl
);
3612 TREE_PUBLIC (newdecl
) = TREE_PUBLIC (olddecl
);
3613 TREE_STATIC (olddecl
) = TREE_STATIC (newdecl
) |= TREE_STATIC (olddecl
);
3614 if (! DECL_EXTERNAL (olddecl
))
3615 DECL_EXTERNAL (newdecl
) = 0;
3617 if (DECL_LANG_SPECIFIC (newdecl
) && DECL_LANG_SPECIFIC (olddecl
))
3619 DECL_INTERFACE_KNOWN (newdecl
) |= DECL_INTERFACE_KNOWN (olddecl
);
3620 DECL_NOT_REALLY_EXTERN (newdecl
) |= DECL_NOT_REALLY_EXTERN (olddecl
);
3621 DECL_COMDAT (newdecl
) |= DECL_COMDAT (olddecl
);
3622 DECL_TEMPLATE_INSTANTIATED (newdecl
)
3623 |= DECL_TEMPLATE_INSTANTIATED (olddecl
);
3624 /* Don't really know how much of the language-specific
3625 values we should copy from old to new. */
3626 DECL_IN_AGGR_P (newdecl
) = DECL_IN_AGGR_P (olddecl
);
3627 DECL_ACCESS (newdecl
) = DECL_ACCESS (olddecl
);
3628 DECL_NONCONVERTING_P (newdecl
) = DECL_NONCONVERTING_P (olddecl
);
3629 DECL_TEMPLATE_INFO (newdecl
) = DECL_TEMPLATE_INFO (olddecl
);
3630 DECL_INITIALIZED_IN_CLASS_P (newdecl
)
3631 |= DECL_INITIALIZED_IN_CLASS_P (olddecl
);
3632 olddecl_friend
= DECL_FRIEND_P (olddecl
);
3634 /* Only functions have DECL_BEFRIENDING_CLASSES. */
3635 if (TREE_CODE (newdecl
) == FUNCTION_DECL
3636 || DECL_FUNCTION_TEMPLATE_P (newdecl
))
3637 DECL_BEFRIENDING_CLASSES (newdecl
)
3638 = chainon (DECL_BEFRIENDING_CLASSES (newdecl
),
3639 DECL_BEFRIENDING_CLASSES (olddecl
));
3642 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3644 if (DECL_TEMPLATE_INSTANTIATION (olddecl
)
3645 && !DECL_TEMPLATE_INSTANTIATION (newdecl
))
3647 /* If newdecl is not a specialization, then it is not a
3648 template-related function at all. And that means that we
3649 shoud have exited above, returning 0. */
3650 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl
),
3653 if (TREE_USED (olddecl
))
3654 /* From [temp.expl.spec]:
3656 If a template, a member template or the member of a class
3657 template is explicitly specialized then that
3658 specialization shall be declared before the first use of
3659 that specialization that would cause an implicit
3660 instantiation to take place, in every translation unit in
3661 which such a use occurs. */
3662 cp_error ("explicit specialization of %D after first use",
3665 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl
);
3667 DECL_DECLARED_INLINE_P (newdecl
) |= DECL_DECLARED_INLINE_P (olddecl
);
3669 /* If either decl says `inline', this fn is inline, unless its
3670 definition was passed already. */
3671 if (DECL_INLINE (newdecl
) && DECL_INITIAL (olddecl
) == NULL_TREE
)
3672 DECL_INLINE (olddecl
) = 1;
3673 DECL_INLINE (newdecl
) = DECL_INLINE (olddecl
);
3675 DECL_UNINLINABLE (newdecl
) = DECL_UNINLINABLE (olddecl
)
3676 = (DECL_UNINLINABLE (newdecl
) || DECL_UNINLINABLE (olddecl
));
3678 /* Preserve abstractness on cloned [cd]tors. */
3679 DECL_ABSTRACT (newdecl
) = DECL_ABSTRACT (olddecl
);
3683 SET_DECL_LANGUAGE (olddecl
, DECL_LANGUAGE (newdecl
));
3684 COPY_DECL_ASSEMBLER_NAME (newdecl
, olddecl
);
3685 SET_DECL_RTL (olddecl
, DECL_RTL (newdecl
));
3687 if (! types_match
|| new_defines_function
)
3689 /* These need to be copied so that the names are available.
3690 Note that if the types do match, we'll preserve inline
3691 info and other bits, but if not, we won't. */
3692 DECL_ARGUMENTS (olddecl
) = DECL_ARGUMENTS (newdecl
);
3693 DECL_RESULT (olddecl
) = DECL_RESULT (newdecl
);
3695 if (new_defines_function
)
3696 /* If defining a function declared with other language
3697 linkage, use the previously declared language linkage. */
3698 SET_DECL_LANGUAGE (newdecl
, DECL_LANGUAGE (olddecl
));
3699 else if (types_match
)
3701 /* If redeclaring a builtin function, and not a definition,
3702 it stays built in. */
3703 if (DECL_BUILT_IN (olddecl
))
3705 DECL_BUILT_IN_CLASS (newdecl
) = DECL_BUILT_IN_CLASS (olddecl
);
3706 DECL_FUNCTION_CODE (newdecl
) = DECL_FUNCTION_CODE (olddecl
);
3707 /* If we're keeping the built-in definition, keep the rtl,
3708 regardless of declaration matches. */
3709 SET_DECL_RTL (newdecl
, DECL_RTL (olddecl
));
3712 DECL_NUM_STMTS (newdecl
) = DECL_NUM_STMTS (olddecl
);
3714 DECL_RESULT (newdecl
) = DECL_RESULT (olddecl
);
3715 /* Don't clear out the arguments if we're redefining a function. */
3716 if (DECL_ARGUMENTS (olddecl
))
3717 DECL_ARGUMENTS (newdecl
) = DECL_ARGUMENTS (olddecl
);
3720 else if (TREE_CODE (newdecl
) == NAMESPACE_DECL
)
3721 NAMESPACE_LEVEL (newdecl
) = NAMESPACE_LEVEL (olddecl
);
3723 /* Now preserve various other info from the definition. */
3724 TREE_ADDRESSABLE (newdecl
) = TREE_ADDRESSABLE (olddecl
);
3725 TREE_ASM_WRITTEN (newdecl
) = TREE_ASM_WRITTEN (olddecl
);
3726 DECL_COMMON (newdecl
) = DECL_COMMON (olddecl
);
3727 COPY_DECL_ASSEMBLER_NAME (olddecl
, newdecl
);
3729 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3733 function_size
= sizeof (struct tree_decl
);
3735 memcpy ((char *) olddecl
+ sizeof (struct tree_common
),
3736 (char *) newdecl
+ sizeof (struct tree_common
),
3737 function_size
- sizeof (struct tree_common
));
3739 if (DECL_TEMPLATE_INSTANTIATION (newdecl
))
3741 /* If newdecl is a template instantiation, it is possible that
3742 the following sequence of events has occurred:
3744 o A friend function was declared in a class template. The
3745 class template was instantiated.
3747 o The instantiation of the friend declaration was
3748 recorded on the instantiation list, and is newdecl.
3750 o Later, however, instantiate_class_template called pushdecl
3751 on the newdecl to perform name injection. But, pushdecl in
3752 turn called duplicate_decls when it discovered that another
3753 declaration of a global function with the same name already
3756 o Here, in duplicate_decls, we decided to clobber newdecl.
3758 If we're going to do that, we'd better make sure that
3759 olddecl, and not newdecl, is on the list of
3760 instantiations so that if we try to do the instantiation
3761 again we won't get the clobbered declaration. */
3763 tree tmpl
= DECL_TI_TEMPLATE (newdecl
);
3764 tree decls
= DECL_TEMPLATE_SPECIALIZATIONS (tmpl
);
3766 for (; decls
; decls
= TREE_CHAIN (decls
))
3767 if (TREE_VALUE (decls
) == newdecl
)
3768 TREE_VALUE (decls
) = olddecl
;
3773 memcpy ((char *) olddecl
+ sizeof (struct tree_common
),
3774 (char *) newdecl
+ sizeof (struct tree_common
),
3775 sizeof (struct tree_decl
) - sizeof (struct tree_common
)
3776 + tree_code_length
[(int)TREE_CODE (newdecl
)] * sizeof (char *));
3779 DECL_UID (olddecl
) = olddecl_uid
;
3781 DECL_FRIEND_P (olddecl
) = 1;
3783 /* NEWDECL contains the merged attribute lists.
3784 Update OLDDECL to be the same. */
3785 DECL_ATTRIBUTES (olddecl
) = DECL_ATTRIBUTES (newdecl
);
3790 /* Record a decl-node X as belonging to the current lexical scope.
3791 Check for errors (such as an incompatible declaration for the same
3792 name already seen in the same scope).
3794 Returns either X or an old decl for the same name.
3795 If an old decl is returned, it may have been smashed
3796 to agree with what X says. */
3804 int need_new_binding
;
3806 /* We shouldn't be calling pushdecl when we're generating RTL for a
3807 function that we already did semantic analysis on previously. */
3808 my_friendly_assert (!cfun
|| doing_semantic_analysis_p (),
3811 need_new_binding
= 1;
3813 if (DECL_TEMPLATE_PARM_P (x
))
3814 /* Template parameters have no context; they are not X::T even
3815 when declared within a class or namespace. */
3819 if (current_function_decl
&& x
!= current_function_decl
3820 /* A local declaration for a function doesn't constitute
3822 && !(TREE_CODE (x
) == FUNCTION_DECL
&& !DECL_INITIAL (x
))
3823 /* A local declaration for an `extern' variable is in the
3824 scope of the current namespace, not the current
3826 && !(TREE_CODE (x
) == VAR_DECL
&& DECL_EXTERNAL (x
))
3827 && !DECL_CONTEXT (x
))
3828 DECL_CONTEXT (x
) = current_function_decl
;
3830 /* If this is the declaration for a namespace-scope function,
3831 but the declaration itself is in a local scope, mark the
3833 if (TREE_CODE (x
) == FUNCTION_DECL
3834 && DECL_NAMESPACE_SCOPE_P (x
)
3835 && current_function_decl
3836 && x
!= current_function_decl
)
3837 DECL_LOCAL_FUNCTION_P (x
) = 1;
3840 name
= DECL_NAME (x
);
3843 int different_binding_level
= 0;
3845 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
3846 name
= TREE_OPERAND (name
, 0);
3848 /* In case this decl was explicitly namespace-qualified, look it
3849 up in its namespace context. */
3850 if (TREE_CODE (x
) == VAR_DECL
&& DECL_NAMESPACE_SCOPE_P (x
)
3851 && namespace_bindings_p ())
3852 t
= namespace_binding (name
, DECL_CONTEXT (x
));
3854 t
= lookup_name_current_level (name
);
3856 /* [basic.link] If there is a visible declaration of an entity
3857 with linkage having the same name and type, ignoring entities
3858 declared outside the innermost enclosing namespace scope, the
3859 block scope declaration declares that same entity and
3860 receives the linkage of the previous declaration. */
3861 if (! t
&& current_function_decl
&& x
!= current_function_decl
3862 && (TREE_CODE (x
) == FUNCTION_DECL
|| TREE_CODE (x
) == VAR_DECL
)
3863 && DECL_EXTERNAL (x
))
3865 /* Look in block scope. */
3866 t
= IDENTIFIER_VALUE (name
);
3867 /* Or in the innermost namespace. */
3869 t
= namespace_binding (name
, DECL_CONTEXT (x
));
3870 /* Does it have linkage? Note that if this isn't a DECL, it's an
3871 OVERLOAD, which is OK. */
3872 if (t
&& DECL_P (t
) && ! (TREE_STATIC (t
) || DECL_EXTERNAL (t
)))
3875 different_binding_level
= 1;
3878 /* If we are declaring a function, and the result of name-lookup
3879 was an OVERLOAD, look for an overloaded instance that is
3880 actually the same as the function we are declaring. (If
3881 there is one, we have to merge our declaration with the
3882 previous declaration.) */
3883 if (t
&& TREE_CODE (t
) == OVERLOAD
)
3887 if (TREE_CODE (x
) == FUNCTION_DECL
)
3888 for (match
= t
; match
; match
= OVL_NEXT (match
))
3890 if (decls_match (OVL_CURRENT (match
), x
))
3894 /* Just choose one. */
3898 t
= OVL_CURRENT (match
);
3903 if (t
== error_mark_node
)
3905 /* error_mark_node is 0 for a while during initialization! */
3907 cp_error_at ("`%#D' used prior to declaration", x
);
3909 else if (t
!= NULL_TREE
)
3911 if (different_binding_level
)
3913 if (decls_match (x
, t
))
3914 /* The standard only says that the local extern
3915 inherits linkage from the previous decl; in
3916 particular, default args are not shared. It would
3917 be nice to propagate inlining info, though. FIXME. */
3918 TREE_PUBLIC (x
) = TREE_PUBLIC (t
);
3920 else if (TREE_CODE (t
) == PARM_DECL
)
3922 if (DECL_CONTEXT (t
) == NULL_TREE
)
3923 /* This is probaby caused by too many errors, but calling
3924 abort will say that if errors have occurred. */
3927 /* Check for duplicate params. */
3928 if (duplicate_decls (x
, t
))
3931 else if ((DECL_EXTERN_C_FUNCTION_P (x
)
3932 || DECL_FUNCTION_TEMPLATE_P (x
))
3933 && is_overloaded_fn (t
))
3934 /* Don't do anything just yet. */;
3935 else if (t
== wchar_decl_node
)
3937 if (pedantic
&& ! DECL_IN_SYSTEM_HEADER (x
))
3938 cp_pedwarn ("redeclaration of `wchar_t' as `%T'",
3941 /* Throw away the redeclaration. */
3944 else if (TREE_CODE (t
) != TREE_CODE (x
))
3946 if (duplicate_decls (x
, t
))
3949 else if (duplicate_decls (x
, t
))
3951 if (TREE_CODE (t
) == TYPE_DECL
)
3952 SET_IDENTIFIER_TYPE_VALUE (name
, TREE_TYPE (t
));
3953 else if (TREE_CODE (t
) == FUNCTION_DECL
)
3954 check_default_args (t
);
3958 else if (DECL_MAIN_P (x
))
3960 /* A redeclaration of main, but not a duplicate of the
3965 This function shall not be overloaded. */
3966 cp_error_at ("invalid redeclaration of `%D'", t
);
3967 cp_error ("as `%D'", x
);
3968 /* We don't try to push this declaration since that
3974 check_template_shadow (x
);
3976 /* If this is a function conjured up by the backend, massage it
3977 so it looks friendly. */
3978 if (DECL_NON_THUNK_FUNCTION_P (x
) && ! DECL_LANG_SPECIFIC (x
))
3980 retrofit_lang_decl (x
);
3981 SET_DECL_LANGUAGE (x
, lang_c
);
3984 if (DECL_NON_THUNK_FUNCTION_P (x
) && ! DECL_FUNCTION_MEMBER_P (x
))
3986 t
= push_overloaded_decl (x
, PUSH_LOCAL
);
3989 if (!namespace_bindings_p ())
3990 /* We do not need to create a binding for this name;
3991 push_overloaded_decl will have already done so if
3993 need_new_binding
= 0;
3995 else if (DECL_FUNCTION_TEMPLATE_P (x
) && DECL_NAMESPACE_SCOPE_P (x
))
3997 t
= push_overloaded_decl (x
, PUSH_GLOBAL
);
3999 add_decl_to_level (x
, NAMESPACE_LEVEL (CP_DECL_CONTEXT (t
)));
4003 /* If declaring a type as a typedef, copy the type (unless we're
4004 at line 0), and install this TYPE_DECL as the new type's typedef
4005 name. See the extensive comment in ../c-decl.c (pushdecl). */
4006 if (TREE_CODE (x
) == TYPE_DECL
)
4008 tree type
= TREE_TYPE (x
);
4009 if (DECL_SOURCE_LINE (x
) == 0)
4011 if (TYPE_NAME (type
) == 0)
4012 TYPE_NAME (type
) = x
;
4014 else if (type
!= error_mark_node
&& TYPE_NAME (type
) != x
4015 /* We don't want to copy the type when all we're
4016 doing is making a TYPE_DECL for the purposes of
4018 && (!TYPE_NAME (type
)
4019 || TYPE_NAME (type
) != DECL_ABSTRACT_ORIGIN (x
)))
4021 DECL_ORIGINAL_TYPE (x
) = type
;
4022 type
= build_type_copy (type
);
4023 TYPE_STUB_DECL (type
) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x
));
4024 TYPE_NAME (type
) = x
;
4025 TREE_TYPE (x
) = type
;
4028 if (type
!= error_mark_node
4030 && TYPE_IDENTIFIER (type
))
4031 set_identifier_type_value_with_scope (DECL_NAME (x
), type
,
4032 current_binding_level
);
4036 /* Multiple external decls of the same identifier ought to match.
4038 We get warnings about inline functions where they are defined.
4039 We get warnings about other functions from push_overloaded_decl.
4041 Avoid duplicate warnings where they are used. */
4042 if (TREE_PUBLIC (x
) && TREE_CODE (x
) != FUNCTION_DECL
)
4046 decl
= IDENTIFIER_NAMESPACE_VALUE (name
);
4047 if (decl
&& TREE_CODE (decl
) == OVERLOAD
)
4048 decl
= OVL_FUNCTION (decl
);
4050 if (decl
&& decl
!= error_mark_node
4051 && (DECL_EXTERNAL (decl
) || TREE_PUBLIC (decl
))
4052 /* If different sort of thing, we already gave an error. */
4053 && TREE_CODE (decl
) == TREE_CODE (x
)
4054 && !same_type_p (TREE_TYPE (x
), TREE_TYPE (decl
)))
4056 cp_pedwarn ("type mismatch with previous external decl", x
);
4057 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
4061 /* This name is new in its binding level.
4062 Install the new declaration and return it. */
4063 if (namespace_bindings_p ())
4065 /* Install a global value. */
4067 /* If the first global decl has external linkage,
4068 warn if we later see static one. */
4069 if (IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
&& TREE_PUBLIC (x
))
4070 TREE_PUBLIC (name
) = 1;
4072 /* Bind the name for the entity. */
4073 if (!(TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
4075 && (TREE_CODE (x
) == TYPE_DECL
4076 || TREE_CODE (x
) == VAR_DECL
4077 || TREE_CODE (x
) == NAMESPACE_DECL
4078 || TREE_CODE (x
) == CONST_DECL
4079 || TREE_CODE (x
) == TEMPLATE_DECL
))
4080 SET_IDENTIFIER_NAMESPACE_VALUE (name
, x
);
4082 /* Don't forget if the function was used via an implicit decl. */
4083 if (IDENTIFIER_IMPLICIT_DECL (name
)
4084 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
4087 /* Don't forget if its address was taken in that way. */
4088 if (IDENTIFIER_IMPLICIT_DECL (name
)
4089 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
4090 TREE_ADDRESSABLE (x
) = 1;
4092 /* Warn about mismatches against previous implicit decl. */
4093 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
4094 /* If this real decl matches the implicit, don't complain. */
4095 && ! (TREE_CODE (x
) == FUNCTION_DECL
4096 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
4098 ("`%D' was previously implicitly declared to return `int'", x
);
4100 /* If new decl is `static' and an `extern' was seen previously,
4102 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
4103 warn_extern_redeclared_static (x
, t
);
4107 /* Here to install a non-global value. */
4108 tree oldlocal
= IDENTIFIER_VALUE (name
);
4109 tree oldglobal
= IDENTIFIER_NAMESPACE_VALUE (name
);
4111 if (need_new_binding
)
4113 push_local_binding (name
, x
, 0);
4114 /* Because push_local_binding will hook X on to the
4115 current_binding_level's name list, we don't want to
4116 do that again below. */
4117 need_new_binding
= 0;
4120 /* If this is a TYPE_DECL, push it into the type value slot. */
4121 if (TREE_CODE (x
) == TYPE_DECL
)
4122 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
),
4123 current_binding_level
);
4125 /* Clear out any TYPE_DECL shadowed by a namespace so that
4126 we won't think this is a type. The C struct hack doesn't
4127 go through namespaces. */
4128 if (TREE_CODE (x
) == NAMESPACE_DECL
)
4129 set_identifier_type_value_with_scope (name
, NULL_TREE
,
4130 current_binding_level
);
4137 && TREE_CODE (oldlocal
) == VAR_DECL
4138 && DECL_DEAD_FOR_LOCAL (oldlocal
))
4139 oldlocal
= DECL_SHADOWED_FOR_VAR (oldlocal
);
4141 if (oldlocal
== NULL_TREE
)
4142 oldlocal
= IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (d
));
4145 /* If this is an extern function declaration, see if we
4146 have a global definition or declaration for the function. */
4147 if (oldlocal
== NULL_TREE
4148 && DECL_EXTERNAL (x
)
4149 && oldglobal
!= NULL_TREE
4150 && TREE_CODE (x
) == FUNCTION_DECL
4151 && TREE_CODE (oldglobal
) == FUNCTION_DECL
)
4153 /* We have one. Their types must agree. */
4154 if (decls_match (x
, oldglobal
))
4158 cp_warning ("extern declaration of `%#D' doesn't match", x
);
4159 cp_warning_at ("global declaration `%#D'", oldglobal
);
4162 /* If we have a local external declaration,
4163 and no file-scope declaration has yet been seen,
4164 then if we later have a file-scope decl it must not be static. */
4165 if (oldlocal
== NULL_TREE
4166 && oldglobal
== NULL_TREE
4167 && DECL_EXTERNAL (x
)
4169 TREE_PUBLIC (name
) = 1;
4171 /* Warn if shadowing an argument at the top level of the body. */
4172 if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
4173 /* Inline decls shadow nothing. */
4174 && !DECL_FROM_INLINE (x
)
4175 && TREE_CODE (oldlocal
) == PARM_DECL
)
4179 /* Don't complain if it's from an enclosing function. */
4180 if (DECL_CONTEXT (oldlocal
) == current_function_decl
4181 && TREE_CODE (x
) != PARM_DECL
)
4183 /* Go to where the parms should be and see if we find
4185 struct binding_level
*b
= current_binding_level
->level_chain
;
4191 if (b
->parm_flag
== 1)
4193 cp_error ("declaration of `%#D' shadows a parameter",
4199 if (warn_shadow
&& !err
)
4200 shadow_warning ("a parameter", name
, oldlocal
);
4203 /* Maybe warn if shadowing something else. */
4204 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
4205 /* No shadow warnings for internally generated vars. */
4206 && ! DECL_ARTIFICIAL (x
)
4207 /* No shadow warnings for vars made for inlining. */
4208 && ! DECL_FROM_INLINE (x
))
4210 if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
4211 && current_class_ptr
4212 && !TREE_STATIC (name
))
4213 cp_warning ("declaration of `%s' shadows a member of `this'",
4214 IDENTIFIER_POINTER (name
));
4215 else if (oldlocal
!= NULL_TREE
4216 && TREE_CODE (oldlocal
) == VAR_DECL
)
4217 shadow_warning ("a previous local", name
, oldlocal
);
4218 else if (oldglobal
!= NULL_TREE
4219 && TREE_CODE (oldglobal
) == VAR_DECL
)
4220 /* XXX shadow warnings in outer-more namespaces */
4221 shadow_warning ("a global declaration", name
, oldglobal
);
4225 if (TREE_CODE (x
) == FUNCTION_DECL
)
4226 check_default_args (x
);
4228 /* Keep count of variables in this level with incomplete type. */
4229 if (TREE_CODE (x
) == VAR_DECL
4230 && TREE_TYPE (x
) != error_mark_node
4231 && ((!COMPLETE_TYPE_P (TREE_TYPE (x
))
4232 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
4233 /* RTTI TD entries are created while defining the type_info. */
4234 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
4235 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))))
4237 if (namespace_bindings_p ())
4238 namespace_scope_incomplete
4239 = tree_cons (NULL_TREE
, x
, namespace_scope_incomplete
);
4241 current_binding_level
->incomplete
4242 = tree_cons (NULL_TREE
, x
, current_binding_level
->incomplete
);
4246 if (need_new_binding
)
4247 add_decl_to_level (x
,
4248 DECL_NAMESPACE_SCOPE_P (x
)
4249 ? NAMESPACE_LEVEL (CP_DECL_CONTEXT (x
))
4250 : current_binding_level
);
4255 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
4256 caller to set DECL_CONTEXT properly. */
4259 pushdecl_with_scope (x
, level
)
4261 struct binding_level
*level
;
4263 register struct binding_level
*b
;
4264 tree function_decl
= current_function_decl
;
4266 current_function_decl
= NULL_TREE
;
4267 if (level
->parm_flag
== 2)
4269 b
= class_binding_level
;
4270 class_binding_level
= level
;
4271 pushdecl_class_level (x
);
4272 class_binding_level
= b
;
4276 b
= current_binding_level
;
4277 current_binding_level
= level
;
4279 current_binding_level
= b
;
4281 current_function_decl
= function_decl
;
4285 /* Like pushdecl, only it places X in the current namespace,
4289 pushdecl_namespace_level (x
)
4292 register struct binding_level
*b
= current_binding_level
;
4295 t
= pushdecl_with_scope (x
, NAMESPACE_LEVEL (current_namespace
));
4297 /* Now, the type_shadowed stack may screw us. Munge it so it does
4299 if (TREE_CODE (x
) == TYPE_DECL
)
4301 tree name
= DECL_NAME (x
);
4303 tree
*ptr
= (tree
*)0;
4304 for (; b
!= global_binding_level
; b
= b
->level_chain
)
4306 tree shadowed
= b
->type_shadowed
;
4307 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
4308 if (TREE_PURPOSE (shadowed
) == name
)
4310 ptr
= &TREE_VALUE (shadowed
);
4311 /* Can't break out of the loop here because sometimes
4312 a binding level will have duplicate bindings for
4313 PT names. It's gross, but I haven't time to fix it. */
4316 newval
= TREE_TYPE (x
);
4317 if (ptr
== (tree
*)0)
4319 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
4320 up here if this is changed to an assertion. --KR */
4321 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
4331 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
4335 pushdecl_top_level (x
)
4338 push_to_top_level ();
4339 x
= pushdecl_namespace_level (x
);
4340 pop_from_top_level ();
4344 /* Make the declaration of X appear in CLASS scope. */
4347 pushdecl_class_level (x
)
4350 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
4351 scope looks for the pre-mangled name. */
4354 if (TREE_CODE (x
) == OVERLOAD
)
4355 x
= OVL_CURRENT (x
);
4356 name
= DECL_NAME (x
);
4360 push_class_level_binding (name
, x
);
4361 if (TREE_CODE (x
) == TYPE_DECL
)
4362 set_identifier_type_value (name
, TREE_TYPE (x
));
4364 else if (ANON_AGGR_TYPE_P (TREE_TYPE (x
)))
4368 for (f
= TYPE_FIELDS (TREE_TYPE (x
));
4371 pushdecl_class_level (f
);
4375 /* Enter DECL into the symbol table, if that's appropriate. Returns
4376 DECL, or a modified version thereof. */
4379 maybe_push_decl (decl
)
4382 tree type
= TREE_TYPE (decl
);
4384 /* Add this decl to the current binding level, but not if it comes
4385 from another scope, e.g. a static member variable. TEM may equal
4386 DECL or it may be a previous decl of the same name. */
4387 if (decl
== error_mark_node
4388 || (TREE_CODE (decl
) != PARM_DECL
4389 && DECL_CONTEXT (decl
) != NULL_TREE
4390 /* Definitions of namespace members outside their namespace are
4392 && TREE_CODE (DECL_CONTEXT (decl
)) != NAMESPACE_DECL
)
4393 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !namespace_bindings_p ())
4394 || TREE_CODE (type
) == UNKNOWN_TYPE
4395 /* The declaration of a template specialization does not affect
4396 the functions available for overload resolution, so we do not
4398 || (TREE_CODE (decl
) == FUNCTION_DECL
4399 && DECL_TEMPLATE_SPECIALIZATION (decl
)))
4402 return pushdecl (decl
);
4405 /* Make the declaration(s) of X appear in CLASS scope
4406 under the name NAME. */
4409 push_class_level_binding (name
, x
)
4414 /* The class_binding_level will be NULL if x is a template
4415 parameter name in a member template. */
4416 if (!class_binding_level
)
4419 /* Make sure that this new member does not have the same name
4420 as a template parameter. */
4421 if (TYPE_BEING_DEFINED (current_class_type
))
4422 check_template_shadow (x
);
4424 /* If this declaration shadows a declaration from an enclosing
4425 class, then we will need to restore IDENTIFIER_CLASS_VALUE when
4426 we leave this class. Record the shadowed declaration here. */
4427 binding
= IDENTIFIER_BINDING (name
);
4429 && ((TREE_CODE (x
) == OVERLOAD
4430 && BINDING_VALUE (binding
)
4431 && is_overloaded_fn (BINDING_VALUE (binding
)))
4432 || INHERITED_VALUE_BINDING_P (binding
)))
4437 /* If the old binding was from a base class, and was for a tag
4438 name, slide it over to make room for the new binding. The
4439 old binding is still visible if explicitly qualified with a
4441 if (INHERITED_VALUE_BINDING_P (binding
)
4442 && BINDING_VALUE (binding
)
4443 && TREE_CODE (BINDING_VALUE (binding
)) == TYPE_DECL
4444 && DECL_ARTIFICIAL (BINDING_VALUE (binding
))
4445 && !(TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)))
4447 old_decl
= BINDING_TYPE (binding
);
4448 BINDING_TYPE (binding
) = BINDING_VALUE (binding
);
4449 BINDING_VALUE (binding
) = NULL_TREE
;
4450 INHERITED_VALUE_BINDING_P (binding
) = 0;
4453 old_decl
= BINDING_VALUE (binding
);
4455 /* Find the previous binding of name on the class-shadowed
4456 list, and update it. */
4457 for (shadow
= class_binding_level
->class_shadowed
;
4459 shadow
= TREE_CHAIN (shadow
))
4460 if (TREE_PURPOSE (shadow
) == name
4461 && TREE_TYPE (shadow
) == old_decl
)
4463 BINDING_VALUE (binding
) = x
;
4464 INHERITED_VALUE_BINDING_P (binding
) = 0;
4465 TREE_TYPE (shadow
) = x
;
4466 IDENTIFIER_CLASS_VALUE (name
) = x
;
4471 /* If we didn't replace an existing binding, put the binding on the
4472 stack of bindings for the identifier, and update the shadowed list. */
4473 if (push_class_binding (name
, x
))
4475 class_binding_level
->class_shadowed
4476 = tree_cons (name
, NULL
,
4477 class_binding_level
->class_shadowed
);
4478 /* Record the value we are binding NAME to so that we can know
4479 what to pop later. */
4480 TREE_TYPE (class_binding_level
->class_shadowed
) = x
;
4484 /* Insert another USING_DECL into the current binding level, returning
4485 this declaration. If this is a redeclaration, do nothing, and
4486 return NULL_TREE if this not in namespace scope (in namespace
4487 scope, a using decl might extend any previous bindings). */
4490 push_using_decl (scope
, name
)
4496 my_friendly_assert (TREE_CODE (scope
) == NAMESPACE_DECL
, 383);
4497 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 384);
4498 for (decl
= current_binding_level
->usings
; decl
; decl
= TREE_CHAIN (decl
))
4499 if (DECL_INITIAL (decl
) == scope
&& DECL_NAME (decl
) == name
)
4502 return namespace_bindings_p () ? decl
: NULL_TREE
;
4503 decl
= build_lang_decl (USING_DECL
, name
, void_type_node
);
4504 DECL_INITIAL (decl
) = scope
;
4505 TREE_CHAIN (decl
) = current_binding_level
->usings
;
4506 current_binding_level
->usings
= decl
;
4510 /* Add namespace to using_directives. Return NULL_TREE if nothing was
4511 changed (i.e. there was already a directive), or the fresh
4512 TREE_LIST otherwise. */
4515 push_using_directive (used
)
4518 tree ud
= current_binding_level
->using_directives
;
4519 tree iter
, ancestor
;
4521 /* Check if we already have this. */
4522 if (purpose_member (used
, ud
) != NULL_TREE
)
4525 /* Recursively add all namespaces used. */
4526 for (iter
= DECL_NAMESPACE_USING (used
); iter
; iter
= TREE_CHAIN (iter
))
4527 push_using_directive (TREE_PURPOSE (iter
));
4529 ancestor
= namespace_ancestor (current_decl_namespace (), used
);
4530 ud
= current_binding_level
->using_directives
;
4531 ud
= tree_cons (used
, ancestor
, ud
);
4532 current_binding_level
->using_directives
= ud
;
4536 /* DECL is a FUNCTION_DECL for a non-member function, which may have
4537 other definitions already in place. We get around this by making
4538 the value of the identifier point to a list of all the things that
4539 want to be referenced by that name. It is then up to the users of
4540 that name to decide what to do with that list.
4542 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its
4543 DECL_TEMPLATE_RESULT. It is dealt with the same way.
4545 FLAGS is a bitwise-or of the following values:
4546 PUSH_LOCAL: Bind DECL in the current scope, rather than at
4548 PUSH_USING: DECL is being pushed as the result of a using
4551 The value returned may be a previous declaration if we guessed wrong
4552 about what language DECL should belong to (C or C++). Otherwise,
4553 it's always DECL (and never something that's not a _DECL). */
4556 push_overloaded_decl (decl
, flags
)
4560 tree name
= DECL_NAME (decl
);
4563 int doing_global
= (namespace_bindings_p () || !(flags
& PUSH_LOCAL
));
4566 old
= namespace_binding (name
, DECL_CONTEXT (decl
));
4568 old
= lookup_name_current_level (name
);
4572 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
4574 tree t
= TREE_TYPE (old
);
4575 if (IS_AGGR_TYPE (t
) && warn_shadow
4576 && (! DECL_IN_SYSTEM_HEADER (decl
)
4577 || ! DECL_IN_SYSTEM_HEADER (old
)))
4578 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
4581 else if (is_overloaded_fn (old
))
4585 for (tmp
= old
; tmp
; tmp
= OVL_NEXT (tmp
))
4587 tree fn
= OVL_CURRENT (tmp
);
4589 if (TREE_CODE (tmp
) == OVERLOAD
&& OVL_USED (tmp
)
4590 && !(flags
& PUSH_USING
)
4591 && compparms (TYPE_ARG_TYPES (TREE_TYPE (fn
)),
4592 TYPE_ARG_TYPES (TREE_TYPE (decl
))))
4593 cp_error ("`%#D' conflicts with previous using declaration `%#D'",
4596 if (duplicate_decls (decl
, fn
))
4600 else if (old
== error_mark_node
)
4601 /* Ignore the undefined symbol marker. */
4605 cp_error_at ("previous non-function declaration `%#D'", old
);
4606 cp_error ("conflicts with function declaration `%#D'", decl
);
4611 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
4613 if (old
&& TREE_CODE (old
) != OVERLOAD
)
4614 new_binding
= ovl_cons (decl
, ovl_cons (old
, NULL_TREE
));
4616 new_binding
= ovl_cons (decl
, old
);
4617 if (flags
& PUSH_USING
)
4618 OVL_USED (new_binding
) = 1;
4621 /* NAME is not ambiguous. */
4625 set_namespace_binding (name
, current_namespace
, new_binding
);
4628 /* We only create an OVERLOAD if there was a previous binding at
4629 this level, or if decl is a template. In the former case, we
4630 need to remove the old binding and replace it with the new
4631 binding. We must also run through the NAMES on the binding
4632 level where the name was bound to update the chain. */
4634 if (TREE_CODE (new_binding
) == OVERLOAD
&& old
)
4638 for (d
= &BINDING_LEVEL (IDENTIFIER_BINDING (name
))->names
;
4640 d
= &TREE_CHAIN (*d
))
4642 || (TREE_CODE (*d
) == TREE_LIST
4643 && TREE_VALUE (*d
) == old
))
4645 if (TREE_CODE (*d
) == TREE_LIST
)
4646 /* Just replace the old binding with the new. */
4647 TREE_VALUE (*d
) = new_binding
;
4649 /* Build a TREE_LIST to wrap the OVERLOAD. */
4650 *d
= tree_cons (NULL_TREE
, new_binding
,
4653 /* And update the CPLUS_BINDING node. */
4654 BINDING_VALUE (IDENTIFIER_BINDING (name
))
4659 /* We should always find a previous binding in this case. */
4660 my_friendly_abort (0);
4663 /* Install the new binding. */
4664 push_local_binding (name
, new_binding
, flags
);
4670 /* Generate an implicit declaration for identifier FUNCTIONID
4671 as a function of type int (). Print a warning if appropriate. */
4674 implicitly_declare (functionid
)
4679 /* We used to reuse an old implicit decl here,
4680 but this loses with inline functions because it can clobber
4681 the saved decl chains. */
4682 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
4684 DECL_EXTERNAL (decl
) = 1;
4685 TREE_PUBLIC (decl
) = 1;
4687 /* ISO standard says implicit declarations are in the innermost block.
4688 So we record the decl in the standard fashion. */
4690 rest_of_decl_compilation (decl
, NULL
, 0, 0);
4693 /* Only one warning per identifier. */
4694 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
4696 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
4699 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
4704 /* Return zero if the declaration NEWDECL is valid
4705 when the declaration OLDDECL (assumed to be for the same name)
4706 has already been seen.
4707 Otherwise return an error message format string with a %s
4708 where the identifier should go. */
4711 redeclaration_error_message (newdecl
, olddecl
)
4712 tree newdecl
, olddecl
;
4714 if (TREE_CODE (newdecl
) == TYPE_DECL
)
4716 /* Because C++ can put things into name space for free,
4717 constructs like "typedef struct foo { ... } foo"
4718 would look like an erroneous redeclaration. */
4719 if (same_type_p (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
)))
4722 return "redefinition of `%#D'";
4724 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
4726 /* If this is a pure function, its olddecl will actually be
4727 the original initialization to `0' (which we force to call
4728 abort()). Don't complain about redefinition in this case. */
4729 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_PURE_VIRTUAL_P (olddecl
))
4732 /* If both functions come from different namespaces, this is not
4733 a redeclaration - this is a conflict with a used function. */
4734 if (DECL_NAMESPACE_SCOPE_P (olddecl
)
4735 && DECL_CONTEXT (olddecl
) != DECL_CONTEXT (newdecl
))
4736 return "`%D' conflicts with used function";
4738 /* We'll complain about linkage mismatches in
4739 warn_extern_redeclared_static. */
4741 /* Defining the same name twice is no good. */
4742 if (DECL_INITIAL (olddecl
) != NULL_TREE
4743 && DECL_INITIAL (newdecl
) != NULL_TREE
)
4745 if (DECL_NAME (olddecl
) == NULL_TREE
)
4746 return "`%#D' not declared in class";
4748 return "redefinition of `%#D'";
4752 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
4754 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
4755 && (DECL_TEMPLATE_RESULT (newdecl
)
4756 != DECL_TEMPLATE_RESULT (olddecl
))
4757 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
))
4758 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)))
4759 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
4760 && COMPLETE_TYPE_P (TREE_TYPE (newdecl
))
4761 && COMPLETE_TYPE_P (TREE_TYPE (olddecl
))))
4762 return "redefinition of `%#D'";
4765 else if (toplevel_bindings_p () || DECL_NAMESPACE_SCOPE_P (newdecl
))
4767 /* Objects declared at top level: */
4768 /* If at least one is a reference, it's ok. */
4769 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
4771 /* Reject two definitions. */
4772 return "redefinition of `%#D'";
4776 /* Objects declared with block scope: */
4777 /* Reject two definitions, and reject a definition
4778 together with an external reference. */
4779 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
4780 return "redeclaration of `%#D'";
4785 /* Create a new label, named ID. */
4788 make_label_decl (id
, local_p
)
4794 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
4796 /* Make sure every label has an rtx. */
4799 DECL_CONTEXT (decl
) = current_function_decl
;
4800 DECL_MODE (decl
) = VOIDmode
;
4801 C_DECLARED_LABEL_FLAG (decl
) = local_p
;
4803 /* Say where one reference is to the label, for the sake of the
4804 error if it is not defined. */
4805 DECL_SOURCE_LINE (decl
) = lineno
;
4806 DECL_SOURCE_FILE (decl
) = input_filename
;
4808 /* Record the fact that this identifier is bound to this label. */
4809 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
4814 /* Record this label on the list of used labels so that we can check
4815 at the end of the function to see whether or not the label was
4816 actually defined, and so we can check when the label is defined whether
4817 this use is valid. */
4823 if (named_label_uses
== NULL
4824 || named_label_uses
->names_in_scope
!= current_binding_level
->names
4825 || named_label_uses
->label_decl
!= decl
)
4827 struct named_label_use_list
*new_ent
;
4828 new_ent
= ((struct named_label_use_list
*)
4829 ggc_alloc (sizeof (struct named_label_use_list
)));
4830 new_ent
->label_decl
= decl
;
4831 new_ent
->names_in_scope
= current_binding_level
->names
;
4832 new_ent
->binding_level
= current_binding_level
;
4833 new_ent
->lineno_o_goto
= lineno
;
4834 new_ent
->filename_o_goto
= input_filename
;
4835 new_ent
->next
= named_label_uses
;
4836 named_label_uses
= new_ent
;
4840 /* Look for a label named ID in the current function. If one cannot
4841 be found, create one. (We keep track of used, but undefined,
4842 labels, and complain about them at the end of a function.) */
4849 struct named_label_list
*ent
;
4851 /* You can't use labels at global scope. */
4852 if (current_function_decl
== NULL_TREE
)
4854 error ("label `%s' referenced outside of any function",
4855 IDENTIFIER_POINTER (id
));
4859 /* See if we've already got this label. */
4860 decl
= IDENTIFIER_LABEL_VALUE (id
);
4861 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) == current_function_decl
)
4864 /* Record this label on the list of labels used in this function.
4865 We do this before calling make_label_decl so that we get the
4866 IDENTIFIER_LABEL_VALUE before the new label is declared. */
4867 ent
= ((struct named_label_list
*)
4868 ggc_alloc_cleared (sizeof (struct named_label_list
)));
4869 ent
->old_value
= IDENTIFIER_LABEL_VALUE (id
);
4870 ent
->next
= named_labels
;
4873 /* We need a new label. */
4874 decl
= make_label_decl (id
, /*local_p=*/0);
4876 /* Now fill in the information we didn't have before. */
4877 ent
->label_decl
= decl
;
4882 /* Declare a local label named ID. */
4885 declare_local_label (id
)
4890 /* Add a new entry to the SHADOWED_LABELS list so that when we leave
4891 this scope we can restore the old value of
4892 IDENTIFIER_TYPE_VALUE. */
4893 current_binding_level
->shadowed_labels
4894 = tree_cons (IDENTIFIER_LABEL_VALUE (id
), NULL_TREE
,
4895 current_binding_level
->shadowed_labels
);
4896 /* Look for the label. */
4897 decl
= make_label_decl (id
, /*local_p=*/1);
4898 /* Now fill in the information we didn't have before. */
4899 TREE_VALUE (current_binding_level
->shadowed_labels
) = decl
;
4904 /* Returns nonzero if it is ill-formed to jump past the declaration of
4905 DECL. Returns 2 if it's also a real problem. */
4908 decl_jump_unsafe (decl
)
4911 if (TREE_CODE (decl
) != VAR_DECL
|| TREE_STATIC (decl
))
4914 if (DECL_INITIAL (decl
) == NULL_TREE
4915 && pod_type_p (TREE_TYPE (decl
)))
4918 /* This is really only important if we're crossing an initialization.
4919 The POD stuff is just pedantry; why should it matter if the class
4920 contains a field of pointer to member type? */
4921 if (DECL_INITIAL (decl
)
4922 || (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))))
4927 /* Check that a single previously seen jump to a newly defined label
4928 is OK. DECL is the LABEL_DECL or 0; LEVEL is the binding_level for
4929 the jump context; NAMES are the names in scope in LEVEL at the jump
4930 context; FILE and LINE are the source position of the jump or 0. */
4933 check_previous_goto_1 (decl
, level
, names
, file
, line
)
4935 struct binding_level
*level
;
4942 struct binding_level
*b
= current_binding_level
;
4943 for (; b
; b
= b
->level_chain
)
4945 tree new_decls
= b
->names
;
4946 tree old_decls
= (b
== level
? names
: NULL_TREE
);
4947 for (; new_decls
!= old_decls
;
4948 new_decls
= TREE_CHAIN (new_decls
))
4950 int problem
= decl_jump_unsafe (new_decls
);
4957 cp_pedwarn ("jump to label `%D'", decl
);
4959 pedwarn ("jump to case label");
4962 pedwarn_with_file_and_line (file
, line
, " from here");
4967 cp_error_at (" crosses initialization of `%#D'",
4970 cp_pedwarn_at (" enters scope of non-POD `%#D'",
4976 if ((b
->is_try_scope
|| b
->is_catch_scope
) && ! saw_eh
)
4981 cp_pedwarn ("jump to label `%D'", decl
);
4983 pedwarn ("jump to case label");
4986 pedwarn_with_file_and_line (file
, line
, " from here");
4989 if (b
->is_try_scope
)
4990 error (" enters try block");
4992 error (" enters catch block");
4999 check_previous_goto (use
)
5000 struct named_label_use_list
*use
;
5002 check_previous_goto_1 (use
->label_decl
, use
->binding_level
,
5003 use
->names_in_scope
, use
->filename_o_goto
,
5004 use
->lineno_o_goto
);
5008 check_switch_goto (level
)
5009 struct binding_level
*level
;
5011 check_previous_goto_1 (NULL_TREE
, level
, level
->names
, NULL
, 0);
5014 /* Check that any previously seen jumps to a newly defined label DECL
5015 are OK. Called by define_label. */
5018 check_previous_gotos (decl
)
5021 struct named_label_use_list
**usep
;
5023 if (! TREE_USED (decl
))
5026 for (usep
= &named_label_uses
; *usep
; )
5028 struct named_label_use_list
*use
= *usep
;
5029 if (use
->label_decl
== decl
)
5031 check_previous_goto (use
);
5035 usep
= &(use
->next
);
5039 /* Check that a new jump to a label DECL is OK. Called by
5040 finish_goto_stmt. */
5048 struct named_label_list
*lab
;
5050 /* We can't know where a computed goto is jumping. So we assume
5052 if (! DECL_P (decl
))
5055 /* If the label hasn't been defined yet, defer checking. */
5056 if (! DECL_INITIAL (decl
))
5062 for (lab
= named_labels
; lab
; lab
= lab
->next
)
5063 if (decl
== lab
->label_decl
)
5066 /* If the label is not on named_labels it's a gcc local label, so
5067 it must be in an outer scope, so jumping to it is always OK. */
5071 if ((lab
->in_try_scope
|| lab
->in_catch_scope
|| lab
->bad_decls
)
5074 cp_pedwarn_at ("jump to label `%D'", decl
);
5075 pedwarn (" from here");
5079 for (bad
= lab
->bad_decls
; bad
; bad
= TREE_CHAIN (bad
))
5081 tree b
= TREE_VALUE (bad
);
5082 int u
= decl_jump_unsafe (b
);
5084 if (u
> 1 && DECL_ARTIFICIAL (b
))
5085 /* Can't skip init of __exception_info. */
5086 cp_error_at (" enters catch block", b
);
5088 cp_error_at (" skips initialization of `%#D'", b
);
5090 cp_pedwarn_at (" enters scope of non-POD `%#D'", b
);
5093 if (lab
->in_try_scope
)
5094 error (" enters try block");
5095 else if (lab
->in_catch_scope
)
5096 error (" enters catch block");
5099 /* Define a label, specifying the location in the source file.
5100 Return the LABEL_DECL node for the label, if the definition is valid.
5101 Otherwise return 0. */
5104 define_label (filename
, line
, name
)
5105 const char *filename
;
5109 tree decl
= lookup_label (name
);
5110 struct named_label_list
*ent
;
5111 register struct binding_level
*p
;
5113 for (ent
= named_labels
; ent
; ent
= ent
->next
)
5114 if (ent
->label_decl
== decl
)
5117 /* After labels, make any new cleanups in the function go into their
5118 own new (temporary) binding contour. */
5119 for (p
= current_binding_level
; !(p
->parm_flag
); p
= p
->level_chain
)
5120 p
->more_cleanups_ok
= 0;
5122 if (name
== get_identifier ("wchar_t"))
5123 cp_pedwarn ("label named wchar_t");
5125 if (DECL_INITIAL (decl
) != NULL_TREE
)
5127 cp_error ("duplicate label `%D'", decl
);
5132 /* Mark label as having been defined. */
5133 DECL_INITIAL (decl
) = error_mark_node
;
5134 /* Say where in the source. */
5135 DECL_SOURCE_FILE (decl
) = filename
;
5136 DECL_SOURCE_LINE (decl
) = line
;
5139 ent
->names_in_scope
= current_binding_level
->names
;
5140 ent
->binding_level
= current_binding_level
;
5142 check_previous_gotos (decl
);
5149 struct binding_level
*level
;
5150 struct cp_switch
*next
;
5151 /* The SWITCH_STMT being built. */
5153 /* A splay-tree mapping the low element of a case range to the high
5154 element, or NULL_TREE if there is no high element. Used to
5155 determine whether or not a new case label duplicates an old case
5156 label. We need a tree, rather than simply a hash table, because
5157 of the GNU case range extension. */
5161 /* A stack of the currently active switch statements. The innermost
5162 switch statement is on the top of the stack. There is no need to
5163 mark the stack for garbage collection because it is only active
5164 during the processing of the body of a function, and we never
5165 collect at that point. */
5167 static struct cp_switch
*switch_stack
;
5169 /* Called right after a switch-statement condition is parsed.
5170 SWITCH_STMT is the switch statement being parsed. */
5173 push_switch (switch_stmt
)
5177 = (struct cp_switch
*) xmalloc (sizeof (struct cp_switch
));
5178 p
->level
= current_binding_level
;
5179 p
->next
= switch_stack
;
5180 p
->switch_stmt
= switch_stmt
;
5181 p
->cases
= splay_tree_new (case_compare
, NULL
, NULL
);
5188 struct cp_switch
*cs
;
5191 splay_tree_delete (cs
->cases
);
5192 switch_stack
= switch_stack
->next
;
5196 /* Note that we've seen a definition of a case label, and complain if this
5197 is a bad place for one. */
5200 finish_case_label (low_value
, high_value
)
5205 register struct binding_level
*p
;
5210 error ("case label not within a switch statement");
5212 cp_error ("case label `%E' not within a switch statement",
5215 error ("`default' label not within a switch statement");
5219 if (processing_template_decl
)
5223 /* For templates, just add the case label; we'll do semantic
5224 analysis at instantiation-time. */
5225 label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
5226 return add_stmt (build_case_label (low_value
, high_value
, label
));
5229 /* Find the condition on which this switch statement depends. */
5230 cond
= SWITCH_COND (switch_stack
->switch_stmt
);
5231 if (cond
&& TREE_CODE (cond
) == TREE_LIST
)
5232 cond
= TREE_VALUE (cond
);
5234 r
= c_add_case_label (switch_stack
->cases
, cond
, low_value
, high_value
);
5235 if (r
== error_mark_node
)
5238 check_switch_goto (switch_stack
->level
);
5240 /* After labels, make any new cleanups in the function go into their
5241 own new (temporary) binding contour. */
5242 for (p
= current_binding_level
; !(p
->parm_flag
); p
= p
->level_chain
)
5243 p
->more_cleanups_ok
= 0;
5248 /* Return the list of declarations of the current level.
5249 Note that this list is in reverse order unless/until
5250 you nreverse it; and when you do nreverse it, you must
5251 store the result back using `storedecls' or you will lose. */
5256 return current_binding_level
->names
;
5259 /* Return the list of type-tags (for structs, etc) of the current level. */
5264 return current_binding_level
->tags
;
5267 /* Store the list of declarations of the current level.
5268 This is done for the parameter declarations of a function being defined,
5269 after they are modified in the light of any missing parameters. */
5275 current_binding_level
->names
= decls
;
5278 /* Similarly, store the list of tags of the current level. */
5284 current_binding_level
->tags
= tags
;
5287 /* Given NAME, an IDENTIFIER_NODE,
5288 return the structure (or union or enum) definition for that name.
5289 Searches binding levels from BINDING_LEVEL up to the global level.
5290 If THISLEVEL_ONLY is nonzero, searches only the specified context
5291 (but skips any tag-transparent contexts to find one that is
5292 meaningful for tags).
5293 FORM says which kind of type the caller wants;
5294 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
5295 If the wrong kind of type is found, and it's not a template, an error is
5299 lookup_tag (form
, name
, binding_level
, thislevel_only
)
5300 enum tree_code form
;
5302 struct binding_level
*binding_level
;
5305 register struct binding_level
*level
;
5306 /* Non-zero if, we should look past a template parameter level, even
5307 if THISLEVEL_ONLY. */
5308 int allow_template_parms_p
= 1;
5310 for (level
= binding_level
; level
; level
= level
->level_chain
)
5313 if (ANON_AGGRNAME_P (name
))
5314 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
5316 /* There's no need for error checking here, because
5317 anon names are unique throughout the compilation. */
5318 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
5319 return TREE_VALUE (tail
);
5321 else if (level
->namespace_p
)
5322 /* Do namespace lookup. */
5323 for (tail
= current_namespace
; 1; tail
= CP_DECL_CONTEXT (tail
))
5325 tree old
= binding_for_name (name
, tail
);
5327 /* If we just skipped past a template parameter level,
5328 even though THISLEVEL_ONLY, and we find a template
5329 class declaration, then we use the _TYPE node for the
5330 template. See the example below. */
5331 if (thislevel_only
&& !allow_template_parms_p
5332 && old
&& BINDING_VALUE (old
)
5333 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old
)))
5334 old
= TREE_TYPE (BINDING_VALUE (old
));
5336 old
= BINDING_TYPE (old
);
5338 /* If it has an original type, it is a typedef, and we
5339 should not return it. */
5340 if (old
&& DECL_ORIGINAL_TYPE (TYPE_NAME (old
)))
5342 if (old
&& TREE_CODE (old
) != form
5343 && !(form
!= ENUMERAL_TYPE
&& TREE_CODE (old
) == TEMPLATE_DECL
))
5345 cp_error ("`%#D' redeclared as %C", old
, form
);
5350 if (thislevel_only
|| tail
== global_namespace
)
5354 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
5356 if (TREE_PURPOSE (tail
) == name
)
5358 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
5359 /* Should tighten this up; it'll probably permit
5360 UNION_TYPE and a struct template, for example. */
5362 && !(form
!= ENUMERAL_TYPE
&& code
== TEMPLATE_DECL
))
5364 /* Definition isn't the kind we were looking for. */
5365 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
5369 return TREE_VALUE (tail
);
5372 if (thislevel_only
&& ! level
->tag_transparent
)
5374 if (level
->template_parms_p
&& allow_template_parms_p
)
5376 /* We must deal with cases like this:
5378 template <class T> struct S;
5379 template <class T> struct S {};
5381 When looking up `S', for the second declaration, we
5382 would like to find the first declaration. But, we
5383 are in the pseudo-global level created for the
5384 template parameters, rather than the (surrounding)
5385 namespace level. Thus, we keep going one more level,
5386 even though THISLEVEL_ONLY is non-zero. */
5387 allow_template_parms_p
= 0;
5399 set_current_level_tags_transparency (tags_transparent
)
5400 int tags_transparent
;
5402 current_binding_level
->tag_transparent
= tags_transparent
;
5406 /* Given a type, find the tag that was defined for it and return the tag name.
5407 Otherwise return 0. However, the value can never be 0
5408 in the cases in which this is used.
5410 C++: If NAME is non-zero, this is the new name to install. This is
5411 done when replacing anonymous tags with real tag names. */
5414 lookup_tag_reverse (type
, name
)
5418 register struct binding_level
*level
;
5420 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
5423 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
5425 if (TREE_VALUE (tail
) == type
)
5428 TREE_PURPOSE (tail
) = name
;
5429 return TREE_PURPOSE (tail
);
5436 /* Look up NAME in the NAMESPACE. */
5439 lookup_namespace_name (namespace, name
)
5440 tree
namespace, name
;
5443 tree template_id
= NULL_TREE
;
5445 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL
, 370);
5447 if (TREE_CODE (name
) == NAMESPACE_DECL
)
5448 /* This happens for A::B<int> when B is a namespace. */
5450 else if (TREE_CODE (name
) == TEMPLATE_DECL
)
5452 /* This happens for A::B where B is a template, and there are no
5453 template arguments. */
5454 cp_error ("invalid use of `%D'", name
);
5455 return error_mark_node
;
5458 namespace = ORIGINAL_NAMESPACE (namespace);
5460 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
5463 name
= TREE_OPERAND (name
, 0);
5464 if (TREE_CODE (name
) == OVERLOAD
)
5465 name
= DECL_NAME (OVL_CURRENT (name
));
5466 else if (DECL_P (name
))
5467 name
= DECL_NAME (name
);
5470 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 373);
5472 val
= make_node (CPLUS_BINDING
);
5473 if (!qualified_lookup_using_namespace (name
, namespace, val
, 0))
5474 return error_mark_node
;
5476 if (BINDING_VALUE (val
))
5478 val
= BINDING_VALUE (val
);
5482 if (DECL_CLASS_TEMPLATE_P (val
))
5483 val
= lookup_template_class (val
,
5484 TREE_OPERAND (template_id
, 1),
5485 /*in_decl=*/NULL_TREE
,
5486 /*context=*/NULL_TREE
,
5487 /*entering_scope=*/0,
5489 else if (DECL_FUNCTION_TEMPLATE_P (val
)
5490 || TREE_CODE (val
) == OVERLOAD
)
5491 val
= lookup_template_function (val
,
5492 TREE_OPERAND (template_id
, 1));
5495 cp_error ("`%D::%D' is not a template",
5497 return error_mark_node
;
5501 /* If we have a single function from a using decl, pull it out. */
5502 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
5503 val
= OVL_FUNCTION (val
);
5507 cp_error ("`%D' undeclared in namespace `%D'", name
, namespace);
5508 return error_mark_node
;
5511 /* Hash a TYPENAME_TYPE. K is really of type `tree'. */
5513 static unsigned long
5521 hash
= (((unsigned long) TYPE_CONTEXT (t
))
5522 ^ ((unsigned long) DECL_NAME (TYPE_NAME (t
))));
5527 /* Compare two TYPENAME_TYPEs. K1 and K2 are really of type `tree'. */
5530 typename_compare (k1
, k2
)
5541 d1
= TYPE_NAME (t1
);
5542 d2
= TYPE_NAME (t2
);
5544 return (DECL_NAME (d1
) == DECL_NAME (d2
)
5545 && same_type_p (TYPE_CONTEXT (t1
), TYPE_CONTEXT (t2
))
5546 && ((TREE_TYPE (t1
) != NULL_TREE
)
5547 == (TREE_TYPE (t2
) != NULL_TREE
))
5548 && same_type_p (TREE_TYPE (t1
), TREE_TYPE (t2
))
5549 && TYPENAME_TYPE_FULLNAME (t1
) == TYPENAME_TYPE_FULLNAME (t2
));
5552 /* Build a TYPENAME_TYPE. If the type is `typename T::t', CONTEXT is
5553 the type of `T', NAME is the IDENTIFIER_NODE for `t'. If BASE_TYPE
5554 is non-NULL, this type is being created by the implicit typename
5555 extension, and BASE_TYPE is a type named `t' in some base class of
5556 `T' which depends on template parameters.
5558 Returns the new TYPENAME_TYPE. */
5561 build_typename_type (context
, name
, fullname
, base_type
)
5569 struct hash_entry
*e
;
5571 static struct hash_table ht
;
5575 static struct hash_table
*h
= &ht
;
5577 hash_table_init (&ht
, &hash_newfunc
, &typename_hash
, &typename_compare
);
5578 ggc_add_tree_hash_table_root (&h
, 1);
5581 /* Build the TYPENAME_TYPE. */
5582 t
= make_aggr_type (TYPENAME_TYPE
);
5583 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
5584 TYPENAME_TYPE_FULLNAME (t
) = fullname
;
5585 TREE_TYPE (t
) = base_type
;
5587 /* Build the corresponding TYPE_DECL. */
5588 d
= build_decl (TYPE_DECL
, name
, t
);
5589 TYPE_NAME (TREE_TYPE (d
)) = d
;
5590 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
5591 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
5592 DECL_ARTIFICIAL (d
) = 1;
5594 /* See if we already have this type. */
5595 e
= hash_lookup (&ht
, t
, /*create=*/false, /*copy=*/0);
5599 /* Insert the type into the table. */
5600 hash_lookup (&ht
, t
, /*create=*/true, /*copy=*/0);
5605 /* Resolve `typename CONTEXT::NAME'. Returns an appropriate type,
5606 unless an error occurs, in which case error_mark_node is returned.
5607 If COMPLAIN zero, don't complain about any errors that occur. */
5610 make_typename_type (context
, name
, complain
)
5618 if (!(TYPE_LANG_SPECIFIC (name
)
5619 && (CLASSTYPE_IS_TEMPLATE (name
)
5620 || CLASSTYPE_USE_TEMPLATE (name
))))
5621 name
= TYPE_IDENTIFIER (name
);
5623 /* Create a TEMPLATE_ID_EXPR for the type. */
5624 name
= build_nt (TEMPLATE_ID_EXPR
,
5625 CLASSTYPE_TI_TEMPLATE (name
),
5626 CLASSTYPE_TI_ARGS (name
));
5628 else if (TREE_CODE (name
) == TYPE_DECL
)
5629 name
= DECL_NAME (name
);
5633 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
5635 name
= TREE_OPERAND (name
, 0);
5636 if (TREE_CODE (name
) == TEMPLATE_DECL
)
5637 name
= TREE_OPERAND (fullname
, 0) = DECL_NAME (name
);
5639 if (TREE_CODE (name
) == TEMPLATE_DECL
)
5641 cp_error ("`%D' used without template parameters", name
);
5642 return error_mark_node
;
5644 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
5645 my_friendly_abort (2000);
5647 if (TREE_CODE (context
) == NAMESPACE_DECL
)
5649 /* We can get here from typename_sub0 in the explicit_template_type
5650 expansion. Just fail. */
5652 cp_error ("no class template named `%#T' in `%#T'",
5654 return error_mark_node
;
5657 if (! uses_template_parms (context
)
5658 || currently_open_class (context
))
5660 if (TREE_CODE (fullname
) == TEMPLATE_ID_EXPR
)
5662 tree tmpl
= NULL_TREE
;
5663 if (IS_AGGR_TYPE (context
))
5664 tmpl
= lookup_field (context
, name
, 0, 0);
5665 if (!tmpl
|| !DECL_CLASS_TEMPLATE_P (tmpl
))
5668 cp_error ("no class template named `%#T' in `%#T'",
5670 return error_mark_node
;
5673 return lookup_template_class (tmpl
,
5674 TREE_OPERAND (fullname
, 1),
5676 /*entering_scope=*/0,
5683 if (!IS_AGGR_TYPE (context
))
5686 cp_error ("no type named `%#T' in `%#T'", name
, context
);
5687 return error_mark_node
;
5690 t
= lookup_field (context
, name
, 0, 1);
5692 return TREE_TYPE (t
);
5696 /* If the CONTEXT is not a template type, then either the field is
5697 there now or its never going to be. */
5698 if (!uses_template_parms (context
))
5701 cp_error ("no type named `%#T' in `%#T'", name
, context
);
5702 return error_mark_node
;
5706 return build_typename_type (context
, name
, fullname
, NULL_TREE
);
5709 /* Resolve `CONTEXT::template NAME'. Returns an appropriate type,
5710 unless an error occurs, in which case error_mark_node is returned.
5711 If COMPLAIN zero, don't complain about any errors that occur. */
5714 make_unbound_class_template (context
, name
, complain
)
5722 name
= TYPE_IDENTIFIER (name
);
5723 else if (DECL_P (name
))
5724 name
= DECL_NAME (name
);
5725 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
5726 my_friendly_abort (20010902);
5728 if (!uses_template_parms (context
)
5729 || currently_open_class (context
))
5731 tree tmpl
= NULL_TREE
;
5733 if (IS_AGGR_TYPE (context
))
5734 tmpl
= lookup_field (context
, name
, 0, 0);
5736 if (!tmpl
|| !DECL_CLASS_TEMPLATE_P (tmpl
))
5739 cp_error ("no class template named `%#T' in `%#T'", name
, context
);
5740 return error_mark_node
;
5743 if (!enforce_access (context
, tmpl
))
5744 return error_mark_node
;
5749 /* Build the UNBOUND_CLASS_TEMPLATE. */
5750 t
= make_aggr_type (UNBOUND_CLASS_TEMPLATE
);
5751 TYPE_CONTEXT (t
) = FROB_CONTEXT (context
);
5752 TREE_TYPE (t
) = NULL_TREE
;
5754 /* Build the corresponding TEMPLATE_DECL. */
5755 d
= build_decl (TEMPLATE_DECL
, name
, t
);
5756 TYPE_NAME (TREE_TYPE (d
)) = d
;
5757 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
5758 DECL_CONTEXT (d
) = FROB_CONTEXT (context
);
5759 DECL_ARTIFICIAL (d
) = 1;
5764 /* Select the right _DECL from multiple choices. */
5767 select_decl (binding
, flags
)
5772 val
= BINDING_VALUE (binding
);
5774 /* When we implicitly declare some builtin entity, we mark it
5775 DECL_ANTICIPATED, so that we know to ignore it until it is
5777 if (val
&& DECL_P (val
)
5778 && DECL_LANG_SPECIFIC (val
)
5779 && DECL_ANTICIPATED (val
))
5782 if (LOOKUP_NAMESPACES_ONLY (flags
))
5784 /* We are not interested in types. */
5785 if (val
&& TREE_CODE (val
) == NAMESPACE_DECL
)
5790 /* If we could have a type and
5791 we have nothing or we need a type and have none. */
5792 if (BINDING_TYPE (binding
)
5793 && (!val
|| ((flags
& LOOKUP_PREFER_TYPES
)
5794 && TREE_CODE (val
) != TYPE_DECL
)))
5795 val
= TYPE_STUB_DECL (BINDING_TYPE (binding
));
5796 /* Don't return non-types if we really prefer types. */
5797 else if (val
&& LOOKUP_TYPES_ONLY (flags
) && TREE_CODE (val
) != TYPE_DECL
5798 && (TREE_CODE (val
) != TEMPLATE_DECL
5799 || !DECL_CLASS_TEMPLATE_P (val
)))
5805 /* Unscoped lookup of a global: iterate over current namespaces,
5806 considering using-directives. If SPACESP is non-NULL, store a list
5807 of the namespaces we've considered in it. */
5810 unqualified_namespace_lookup (name
, flags
, spacesp
)
5815 tree b
= make_node (CPLUS_BINDING
);
5816 tree initial
= current_decl_namespace ();
5817 tree scope
= initial
;
5819 struct binding_level
*level
;
5820 tree val
= NULL_TREE
;
5823 *spacesp
= NULL_TREE
;
5825 for (; !val
; scope
= CP_DECL_CONTEXT (scope
))
5828 *spacesp
= tree_cons (scope
, NULL_TREE
, *spacesp
);
5829 val
= binding_for_name (name
, scope
);
5831 /* Initialize binding for this context. */
5832 BINDING_VALUE (b
) = BINDING_VALUE (val
);
5833 BINDING_TYPE (b
) = BINDING_TYPE (val
);
5835 /* Add all _DECLs seen through local using-directives. */
5836 for (level
= current_binding_level
;
5837 !level
->namespace_p
;
5838 level
= level
->level_chain
)
5839 if (!lookup_using_namespace (name
, b
, level
->using_directives
,
5840 scope
, flags
, spacesp
))
5841 /* Give up because of error. */
5842 return error_mark_node
;
5844 /* Add all _DECLs seen through global using-directives. */
5845 /* XXX local and global using lists should work equally. */
5849 if (!lookup_using_namespace (name
, b
, DECL_NAMESPACE_USING (siter
),
5850 scope
, flags
, spacesp
))
5851 /* Give up because of error. */
5852 return error_mark_node
;
5853 if (siter
== scope
) break;
5854 siter
= CP_DECL_CONTEXT (siter
);
5857 val
= select_decl (b
, flags
);
5858 if (scope
== global_namespace
)
5864 /* Combine prefer_type and namespaces_only into flags. */
5867 lookup_flags (prefer_type
, namespaces_only
)
5868 int prefer_type
, namespaces_only
;
5870 if (namespaces_only
)
5871 return LOOKUP_PREFER_NAMESPACES
;
5872 if (prefer_type
> 1)
5873 return LOOKUP_PREFER_TYPES
;
5874 if (prefer_type
> 0)
5875 return LOOKUP_PREFER_BOTH
;
5879 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
5880 ignore it or not. Subroutine of lookup_name_real. */
5883 qualify_lookup (val
, flags
)
5887 if (val
== NULL_TREE
)
5889 if ((flags
& LOOKUP_PREFER_NAMESPACES
) && TREE_CODE (val
) == NAMESPACE_DECL
)
5891 if ((flags
& LOOKUP_PREFER_TYPES
)
5892 && (TREE_CODE (val
) == TYPE_DECL
5893 || ((flags
& LOOKUP_TEMPLATES_EXPECTED
)
5894 && DECL_CLASS_TEMPLATE_P (val
))))
5896 if (flags
& (LOOKUP_PREFER_NAMESPACES
| LOOKUP_PREFER_TYPES
))
5901 /* Any other BINDING overrides an implicit TYPENAME. Warn about
5905 warn_about_implicit_typename_lookup (typename
, binding
)
5909 tree subtype
= TREE_TYPE (TREE_TYPE (typename
));
5910 tree name
= DECL_NAME (typename
);
5912 if (! (TREE_CODE (binding
) == TEMPLATE_DECL
5913 && CLASSTYPE_TEMPLATE_INFO (subtype
)
5914 && CLASSTYPE_TI_TEMPLATE (subtype
) == binding
)
5915 && ! (TREE_CODE (binding
) == TYPE_DECL
5916 && same_type_p (TREE_TYPE (binding
), subtype
)))
5918 cp_warning ("lookup of `%D' finds `%#D'",
5920 cp_warning (" instead of `%D' from dependent base class",
5922 cp_warning (" (use `typename %T::%D' if that's what you meant)",
5923 constructor_name (current_class_type
), name
);
5927 /* Look up NAME in the current binding level and its superiors in the
5928 namespace of variables, functions and typedefs. Return a ..._DECL
5929 node of some kind representing its definition if there is only one
5930 such declaration, or return a TREE_LIST with all the overloaded
5931 definitions if there are many, or return 0 if it is undefined.
5933 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
5934 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
5935 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
5936 Otherwise we prefer non-TYPE_DECLs.
5938 If NONCLASS is non-zero, we don't look for the NAME in class scope,
5939 using IDENTIFIER_CLASS_VALUE. */
5942 lookup_name_real (name
, prefer_type
, nonclass
, namespaces_only
)
5944 int prefer_type
, nonclass
, namespaces_only
;
5947 tree val
= NULL_TREE
;
5949 tree from_obj
= NULL_TREE
;
5951 int val_is_implicit_typename
= 0;
5953 /* Hack: copy flag set by parser, if set. */
5954 if (only_namespace_names
)
5955 namespaces_only
= 1;
5957 if (prefer_type
== -2)
5959 extern int looking_for_typename
;
5960 tree type
= NULL_TREE
;
5963 prefer_type
= looking_for_typename
;
5965 flags
= lookup_flags (prefer_type
, namespaces_only
);
5966 /* If the next thing is '<', class templates are types. */
5967 if (looking_for_template
)
5968 flags
|= LOOKUP_TEMPLATES_EXPECTED
;
5972 else if (got_object
!= error_mark_node
)
5977 if (type
== error_mark_node
)
5978 return error_mark_node
;
5979 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
5980 type
= TREE_TYPE (type
);
5983 type
= complete_type (type
);
5985 if (TREE_CODE (type
) == VOID_TYPE
)
5986 type
= global_namespace
;
5987 if (TREE_CODE (type
) == NAMESPACE_DECL
)
5989 val
= make_node (CPLUS_BINDING
);
5990 flags
|= LOOKUP_COMPLAIN
;
5991 if (!qualified_lookup_using_namespace (name
, type
, val
, flags
))
5993 val
= select_decl (val
, flags
);
5995 else if (! IS_AGGR_TYPE (type
)
5996 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
5997 || TREE_CODE (type
) == BOUND_TEMPLATE_TEMPLATE_PARM
5998 || TREE_CODE (type
) == TYPENAME_TYPE
)
5999 /* Someone else will give an error about this if needed. */
6001 else if (type
== current_class_type
)
6002 val
= IDENTIFIER_CLASS_VALUE (name
);
6005 val
= lookup_member (type
, name
, 0, prefer_type
);
6006 type_access_control (type
, val
);
6008 /* Restore the containing TYPENAME_TYPE if we looked
6009 through it before. */
6010 if (got_scope
&& got_scope
!= type
6011 && val
&& TREE_CODE (val
) == TYPE_DECL
6012 && TREE_CODE (TREE_TYPE (val
)) == TYPENAME_TYPE
)
6013 TYPE_CONTEXT (TREE_TYPE (val
)) = got_scope
;
6021 else if (got_object
&& val
)
6029 flags
= lookup_flags (prefer_type
, namespaces_only
);
6030 /* If we're not parsing, we need to complain. */
6031 flags
|= LOOKUP_COMPLAIN
;
6034 /* First, look in non-namespace scopes. */
6036 if (current_class_type
== NULL_TREE
)
6039 for (t
= IDENTIFIER_BINDING (name
); t
; t
= TREE_CHAIN (t
))
6043 if (!LOCAL_BINDING_P (t
) && nonclass
)
6044 /* We're not looking for class-scoped bindings, so keep going. */
6047 /* If this is the kind of thing we're looking for, we're done. */
6048 if (qualify_lookup (BINDING_VALUE (t
), flags
))
6049 binding
= BINDING_VALUE (t
);
6050 else if ((flags
& LOOKUP_PREFER_TYPES
)
6051 && qualify_lookup (BINDING_TYPE (t
), flags
))
6052 binding
= BINDING_TYPE (t
);
6054 binding
= NULL_TREE
;
6056 /* Handle access control on types from enclosing or base classes. */
6057 if (binding
&& ! yylex
6058 && BINDING_LEVEL (t
) && BINDING_LEVEL (t
)->parm_flag
== 2)
6059 type_access_control (BINDING_LEVEL (t
)->this_class
, binding
);
6062 && (!val
|| !IMPLICIT_TYPENAME_TYPE_DECL_P (binding
)))
6064 if (val_is_implicit_typename
&& !yylex
)
6065 warn_about_implicit_typename_lookup (val
, binding
);
6067 val_is_implicit_typename
6068 = IMPLICIT_TYPENAME_TYPE_DECL_P (val
);
6069 if (!val_is_implicit_typename
)
6074 /* Now lookup in namespace scopes. */
6075 if (!val
|| val_is_implicit_typename
)
6077 t
= unqualified_namespace_lookup (name
, flags
, 0);
6080 if (val_is_implicit_typename
&& !yylex
)
6081 warn_about_implicit_typename_lookup (val
, t
);
6089 /* This should only warn about types used in qualified-ids. */
6090 if (from_obj
&& from_obj
!= val
)
6092 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
6093 && TREE_CODE (val
) == TYPE_DECL
6094 && ! same_type_p (TREE_TYPE (from_obj
), TREE_TYPE (val
)))
6096 lookup of `%D' in the scope of `%#T' (`%#D') \
6097 does not match lookup in the current scope (`%#D')",
6098 name
, got_object
, from_obj
, val
);
6100 /* We don't change val to from_obj if got_object depends on
6101 template parms because that breaks implicit typename for
6102 destructor calls. */
6103 if (! uses_template_parms (got_object
))
6107 /* If we have a single function from a using decl, pull it out. */
6108 if (TREE_CODE (val
) == OVERLOAD
&& ! really_overloaded_fn (val
))
6109 val
= OVL_FUNCTION (val
);
6118 lookup_name_nonclass (name
)
6121 return lookup_name_real (name
, 0, 1, 0);
6125 lookup_function_nonclass (name
, args
)
6129 return lookup_arg_dependent (name
, lookup_name_nonclass (name
), args
);
6133 lookup_name_namespace_only (name
)
6136 /* type-or-namespace, nonclass, namespace_only */
6137 return lookup_name_real (name
, 1, 1, 1);
6141 lookup_name (name
, prefer_type
)
6145 return lookup_name_real (name
, prefer_type
, 0, 0);
6148 /* Similar to `lookup_name' but look only in the innermost non-class
6152 lookup_name_current_level (name
)
6155 struct binding_level
*b
;
6158 b
= current_binding_level
;
6159 while (b
->parm_flag
== 2)
6164 t
= IDENTIFIER_NAMESPACE_VALUE (name
);
6166 /* extern "C" function() */
6167 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
6170 else if (IDENTIFIER_BINDING (name
)
6171 && LOCAL_BINDING_P (IDENTIFIER_BINDING (name
)))
6175 if (BINDING_LEVEL (IDENTIFIER_BINDING (name
)) == b
)
6176 return IDENTIFIER_VALUE (name
);
6188 /* Like lookup_name_current_level, but for types. */
6191 lookup_type_current_level (name
)
6194 register tree t
= NULL_TREE
;
6196 my_friendly_assert (! current_binding_level
->namespace_p
, 980716);
6198 if (REAL_IDENTIFIER_TYPE_VALUE (name
) != NULL_TREE
6199 && REAL_IDENTIFIER_TYPE_VALUE (name
) != global_type_node
)
6201 struct binding_level
*b
= current_binding_level
;
6204 if (purpose_member (name
, b
->type_shadowed
))
6205 return REAL_IDENTIFIER_TYPE_VALUE (name
);
6217 begin_only_namespace_names ()
6219 only_namespace_names
= 1;
6223 end_only_namespace_names ()
6225 only_namespace_names
= 0;
6228 /* Push the declarations of builtin types into the namespace.
6229 RID_INDEX is the index of the builtin type
6230 in the array RID_POINTERS. NAME is the name used when looking
6231 up the builtin type. TYPE is the _TYPE node for the builtin type. */
6234 record_builtin_type (rid_index
, name
, type
)
6239 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
6240 tree tdecl
= NULL_TREE
;
6242 if ((int) rid_index
< (int) RID_MAX
)
6243 rname
= ridpointers
[(int) rid_index
];
6245 tname
= get_identifier (name
);
6247 TYPE_BUILT_IN (type
) = 1;
6251 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
6252 set_identifier_type_value (tname
, NULL_TREE
);
6253 if ((int) rid_index
< (int) RID_MAX
)
6254 /* Built-in types live in the global namespace. */
6255 SET_IDENTIFIER_GLOBAL_VALUE (tname
, tdecl
);
6257 if (rname
!= NULL_TREE
)
6259 if (tname
!= NULL_TREE
)
6261 set_identifier_type_value (rname
, NULL_TREE
);
6262 SET_IDENTIFIER_GLOBAL_VALUE (rname
, tdecl
);
6266 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
6267 set_identifier_type_value (rname
, NULL_TREE
);
6272 /* Record one of the standard Java types.
6273 * Declare it as having the given NAME.
6274 * If SIZE > 0, it is the size of one of the integral types;
6275 * otherwise it is the negative of the size of one of the other types. */
6278 record_builtin_java_type (name
, size
)
6284 type
= make_signed_type (size
);
6285 else if (size
> -32)
6286 { /* "__java_char" or ""__java_boolean". */
6287 type
= make_unsigned_type (-size
);
6288 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
6291 { /* "__java_float" or ""__java_double". */
6292 type
= make_node (REAL_TYPE
);
6293 TYPE_PRECISION (type
) = - size
;
6296 record_builtin_type (RID_MAX
, name
, type
);
6297 decl
= TYPE_NAME (type
);
6299 /* Suppress generate debug symbol entries for these types,
6300 since for normal C++ they are just clutter.
6301 However, push_lang_context undoes this if extern "Java" is seen. */
6302 DECL_IGNORED_P (decl
) = 1;
6304 TYPE_FOR_JAVA (type
) = 1;
6308 /* Push a type into the namespace so that the back-ends ignore it. */
6311 record_unknown_type (type
, name
)
6315 tree decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier (name
), type
));
6316 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
6317 DECL_IGNORED_P (decl
) = 1;
6318 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
6319 TYPE_SIZE (type
) = TYPE_SIZE (void_type_node
);
6320 TYPE_ALIGN (type
) = 1;
6321 TYPE_USER_ALIGN (type
) = 0;
6322 TYPE_MODE (type
) = TYPE_MODE (void_type_node
);
6325 /* An string for which we should create an IDENTIFIER_NODE at
6328 typedef struct predefined_identifier
6330 /* The name of the identifier. */
6331 const char *const name
;
6332 /* The place where the IDENTIFIER_NODE should be stored. */
6334 /* Non-zero if this is the name of a constructor or destructor. */
6335 const int ctor_or_dtor_p
;
6336 } predefined_identifier
;
6338 /* Create all the predefined identifiers. */
6341 initialize_predefined_identifiers ()
6343 const predefined_identifier
*pid
;
6345 /* A table of identifiers to create at startup. */
6346 static const predefined_identifier predefined_identifiers
[] = {
6347 { "C++", &lang_name_cplusplus
, 0 },
6348 { "C", &lang_name_c
, 0 },
6349 { "Java", &lang_name_java
, 0 },
6350 { CTOR_NAME
, &ctor_identifier
, 1 },
6351 { "__base_ctor", &base_ctor_identifier
, 1 },
6352 { "__comp_ctor", &complete_ctor_identifier
, 1 },
6353 { DTOR_NAME
, &dtor_identifier
, 1 },
6354 { "__comp_dtor", &complete_dtor_identifier
, 1 },
6355 { "__base_dtor", &base_dtor_identifier
, 1 },
6356 { "__deleting_dtor", &deleting_dtor_identifier
, 1 },
6357 { IN_CHARGE_NAME
, &in_charge_identifier
, 0 },
6358 { "nelts", &nelts_identifier
, 0 },
6359 { THIS_NAME
, &this_identifier
, 0 },
6360 { VTABLE_DELTA_NAME
, &delta_identifier
, 0 },
6361 { VTABLE_PFN_NAME
, &pfn_identifier
, 0 },
6362 { "_vptr", &vptr_identifier
, 0 },
6363 { "__vtt_parm", &vtt_parm_identifier
, 0 },
6364 { "std", &std_identifier
, 0 },
6368 for (pid
= predefined_identifiers
; pid
->name
; ++pid
)
6370 *pid
->node
= get_identifier (pid
->name
);
6371 if (pid
->ctor_or_dtor_p
)
6372 IDENTIFIER_CTOR_OR_DTOR_P (*pid
->node
) = 1;
6376 /* Create the predefined scalar types of C,
6377 and some nodes representing standard constants (0, 1, (void *)0).
6378 Initialize the global binding level.
6379 Make definitions for built-in primitive functions. */
6382 cxx_init_decl_processing ()
6385 tree void_ftype_ptr
;
6387 /* Create all the identifiers we need. */
6388 initialize_predefined_identifiers ();
6390 /* Fill in back-end hooks. */
6391 init_lang_status
= &push_cp_function_context
;
6392 free_lang_status
= &pop_cp_function_context
;
6393 mark_lang_status
= &mark_cp_function_context
;
6394 lang_missing_noreturn_ok_p
= &cp_missing_noreturn_ok_p
;
6400 /* Create the global variables. */
6401 push_to_top_level ();
6403 /* Enter the global namespace. */
6404 my_friendly_assert (global_namespace
== NULL_TREE
, 375);
6405 push_namespace (get_identifier ("::"));
6406 global_namespace
= current_namespace
;
6407 current_lang_name
= NULL_TREE
;
6409 /* Adjust various flags based on command-line settings. */
6410 if (! flag_permissive
&& ! pedantic
)
6411 flag_pedantic_errors
= 1;
6412 if (!flag_no_inline
)
6414 flag_inline_trees
= 1;
6417 if (flag_inline_functions
)
6419 flag_inline_trees
= 2;
6420 flag_inline_functions
= 0;
6423 /* In C++, we never create builtin functions whose name does not
6424 begin with `__'. Users should be using headers to get prototypes
6425 in C++. It would be nice if we could warn when `-fbuiltin' is
6426 used explicitly, but we do not have that information. */
6427 flag_no_builtin
= 1;
6430 current_lang_name
= lang_name_c
;
6432 current_function_decl
= NULL_TREE
;
6433 current_binding_level
= NULL_BINDING_LEVEL
;
6434 free_binding_level
= NULL_BINDING_LEVEL
;
6436 build_common_tree_nodes (flag_signed_char
);
6438 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
6439 TREE_TYPE (error_mark_list
) = error_mark_node
;
6441 /* Make the binding_level structure for global names. */
6443 global_binding_level
= current_binding_level
;
6444 /* The global level is the namespace level of ::. */
6445 NAMESPACE_LEVEL (global_namespace
) = global_binding_level
;
6446 declare_namespace_level ();
6448 /* Create the `std' namespace. */
6449 push_namespace (std_identifier
);
6450 std_node
= current_namespace
;
6453 lang_attribute_table
= cp_attribute_table
;
6455 c_common_nodes_and_builtins ();
6457 java_byte_type_node
= record_builtin_java_type ("__java_byte", 8);
6458 java_short_type_node
= record_builtin_java_type ("__java_short", 16);
6459 java_int_type_node
= record_builtin_java_type ("__java_int", 32);
6460 java_long_type_node
= record_builtin_java_type ("__java_long", 64);
6461 java_float_type_node
= record_builtin_java_type ("__java_float", -32);
6462 java_double_type_node
= record_builtin_java_type ("__java_double", -64);
6463 java_char_type_node
= record_builtin_java_type ("__java_char", -16);
6464 java_boolean_type_node
= record_builtin_java_type ("__java_boolean", -1);
6466 integer_two_node
= build_int_2 (2, 0);
6467 TREE_TYPE (integer_two_node
) = integer_type_node
;
6468 integer_three_node
= build_int_2 (3, 0);
6469 TREE_TYPE (integer_three_node
) = integer_type_node
;
6471 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
6472 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
6473 TYPE_MAX_VALUE (boolean_type_node
) = build_int_2 (1, 0);
6474 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node
)) = boolean_type_node
;
6475 TYPE_PRECISION (boolean_type_node
) = 1;
6476 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
6477 boolean_false_node
= build_int_2 (0, 0);
6478 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
6479 boolean_true_node
= build_int_2 (1, 0);
6480 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
6482 signed_size_zero_node
= build_int_2 (0, 0);
6483 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
6485 empty_except_spec
= build_tree_list (NULL_TREE
, NULL_TREE
);
6488 record_builtin_type (RID_MAX
, NULL
, string_type_node
);
6491 delta_type_node
= ptrdiff_type_node
;
6492 vtable_index_type
= ptrdiff_type_node
;
6494 vtt_parm_type
= build_pointer_type (const_ptr_type_node
);
6495 lang_type_promotes_to
= convert_type_from_ellipsis
;
6497 void_ftype
= build_function_type (void_type_node
, void_list_node
);
6498 void_ftype_ptr
= build_function_type (void_type_node
,
6499 tree_cons (NULL_TREE
,
6503 = build_exception_variant (void_ftype_ptr
, empty_except_spec
);
6505 /* C++ extensions */
6507 unknown_type_node
= make_node (UNKNOWN_TYPE
);
6508 record_unknown_type (unknown_type_node
, "unknown type");
6510 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6511 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
6513 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6515 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
6516 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
6519 /* Make sure we get a unique function type, so we can give
6520 its pointer type a name. (This wins for gdb.) */
6521 tree vfunc_type
= make_node (FUNCTION_TYPE
);
6522 TREE_TYPE (vfunc_type
) = integer_type_node
;
6523 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
6524 layout_type (vfunc_type
);
6526 vtable_entry_type
= build_pointer_type (vfunc_type
);
6528 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
6531 = build_cplus_array_type (vtable_entry_type
, NULL_TREE
);
6532 layout_type (vtbl_type_node
);
6533 vtbl_type_node
= build_qualified_type (vtbl_type_node
, TYPE_QUAL_CONST
);
6534 record_builtin_type (RID_MAX
, NULL
, vtbl_type_node
);
6535 vtbl_ptr_type_node
= build_pointer_type (vtable_entry_type
);
6536 layout_type (vtbl_ptr_type_node
);
6537 record_builtin_type (RID_MAX
, NULL
, vtbl_ptr_type_node
);
6539 push_namespace (get_identifier ("__cxxabiv1"));
6540 abi_node
= current_namespace
;
6543 global_type_node
= make_node (LANG_TYPE
);
6544 record_unknown_type (global_type_node
, "global type");
6547 current_lang_name
= lang_name_cplusplus
;
6550 tree bad_alloc_type_node
, newtype
, deltype
;
6551 tree ptr_ftype_sizetype
;
6553 push_namespace (std_identifier
);
6554 bad_alloc_type_node
= xref_tag
6555 (class_type_node
, get_identifier ("bad_alloc"), 1);
6558 = build_function_type (ptr_type_node
,
6559 tree_cons (NULL_TREE
,
6562 newtype
= build_exception_variant
6563 (ptr_ftype_sizetype
, add_exception_specifier
6564 (NULL_TREE
, bad_alloc_type_node
, -1));
6565 deltype
= build_exception_variant (void_ftype_ptr
, empty_except_spec
);
6566 push_cp_library_fn (NEW_EXPR
, newtype
);
6567 push_cp_library_fn (VEC_NEW_EXPR
, newtype
);
6568 global_delete_fndecl
= push_cp_library_fn (DELETE_EXPR
, deltype
);
6569 push_cp_library_fn (VEC_DELETE_EXPR
, deltype
);
6573 = build_library_fn_ptr ("__cxa_pure_virtual", void_ftype
);
6575 /* Perform other language dependent initializations. */
6576 init_class_processing ();
6577 init_init_processing ();
6578 init_search_processing ();
6579 init_rtti_processing ();
6581 if (flag_exceptions
)
6582 init_exception_processing ();
6584 if (! supports_one_only ())
6587 make_fname_decl
= cp_make_fname_decl
;
6588 start_fname_decls ();
6590 /* Show we use EH for cleanups. */
6591 using_eh_for_cleanups ();
6593 /* Maintain consistency. Perhaps we should just complain if they
6594 say -fwritable-strings? */
6595 if (flag_writable_strings
)
6596 flag_const_strings
= 0;
6598 /* Add GC roots for all of our global variables. */
6599 ggc_add_tree_root (c_global_trees
, sizeof c_global_trees
/ sizeof(tree
));
6600 ggc_add_tree_root (cp_global_trees
, sizeof cp_global_trees
/ sizeof(tree
));
6601 ggc_add_tree_root (&integer_three_node
, 1);
6602 ggc_add_tree_root (&integer_two_node
, 1);
6603 ggc_add_tree_root (&signed_size_zero_node
, 1);
6604 ggc_add_tree_root (&size_one_node
, 1);
6605 ggc_add_tree_root (&size_zero_node
, 1);
6606 ggc_add_root (&global_binding_level
, 1, sizeof global_binding_level
,
6607 mark_binding_level
);
6608 ggc_add_root (&scope_chain
, 1, sizeof scope_chain
, &mark_saved_scope
);
6609 ggc_add_tree_root (&static_ctors
, 1);
6610 ggc_add_tree_root (&static_dtors
, 1);
6611 ggc_add_tree_root (&lastiddecl
, 1);
6613 ggc_add_tree_root (&last_function_parms
, 1);
6614 ggc_add_tree_root (&error_mark_list
, 1);
6616 ggc_add_tree_root (&global_namespace
, 1);
6617 ggc_add_tree_root (&global_type_node
, 1);
6618 ggc_add_tree_root (&anonymous_namespace_name
, 1);
6620 ggc_add_tree_root (&got_object
, 1);
6621 ggc_add_tree_root (&got_scope
, 1);
6623 ggc_add_tree_root (¤t_lang_name
, 1);
6624 ggc_add_tree_root (&static_aggregates
, 1);
6625 ggc_add_tree_root (&free_bindings
, 1);
6628 /* Generate an initializer for a function naming variable from
6629 NAME. NAME may be NULL, in which case we generate a special
6630 ERROR_MARK node which should be replaced later. */
6633 cp_fname_init (name
)
6636 tree domain
= NULL_TREE
;
6638 tree init
= NULL_TREE
;
6643 length
= strlen (name
);
6644 domain
= build_index_type (size_int (length
));
6645 init
= build_string (length
+ 1, name
);
6648 type
= build_qualified_type (char_type_node
, TYPE_QUAL_CONST
);
6649 type
= build_cplus_array_type (type
, domain
);
6652 TREE_TYPE (init
) = type
;
6654 /* We don't know the value until instantiation time. Make
6655 something which will be digested now, but replaced later. */
6656 init
= build (ERROR_MARK
, type
);
6661 /* Create the VAR_DECL for __FUNCTION__ etc. ID is the name to give the
6662 decl, NAME is the initialization string and TYPE_DEP indicates whether
6663 NAME depended on the type of the function. We make use of that to detect
6664 __PRETTY_FUNCTION__ inside a template fn. This is being done
6665 lazily at the point of first use, so we musn't push the decl now. */
6668 cp_make_fname_decl (id
, type_dep
)
6672 const char *const name
= (type_dep
&& processing_template_decl
6673 ? NULL
: fname_as_string (type_dep
));
6674 tree init
= cp_fname_init (name
);
6675 tree decl
= build_decl (VAR_DECL
, id
, TREE_TYPE (init
));
6677 /* As we don't push the decl here, we must set the context. */
6678 DECL_CONTEXT (decl
) = current_function_decl
;
6679 DECL_PRETTY_FUNCTION_P (decl
) = type_dep
;
6681 TREE_STATIC (decl
) = 1;
6682 TREE_READONLY (decl
) = 1;
6683 DECL_ARTIFICIAL (decl
) = 1;
6684 DECL_INITIAL (decl
) = init
;
6686 TREE_USED (decl
) = 1;
6688 cp_finish_decl (decl
, init
, NULL_TREE
, LOOKUP_ONLYCONVERTING
);
6693 /* Entry point for the benefit of c_common_nodes_and_builtins.
6695 Make a definition for a builtin function named NAME and whose data type
6696 is TYPE. TYPE should be a function type with argument types.
6698 CLASS and CODE tell later passes how to compile calls to this function.
6699 See tree.h for possible values.
6701 If LIBNAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6702 the name to be called if we can't opencode the function. */
6705 builtin_function (name
, type
, code
, class, libname
)
6709 enum built_in_class
class;
6710 const char *libname
;
6712 tree decl
= build_library_fn_1 (get_identifier (name
), ERROR_MARK
, type
);
6713 DECL_BUILT_IN_CLASS (decl
) = class;
6714 DECL_FUNCTION_CODE (decl
) = code
;
6716 my_friendly_assert (DECL_CONTEXT (decl
) == NULL_TREE
, 392);
6718 /* All builtins that don't begin with an `_' should go in the `std'
6722 push_namespace (std_identifier
);
6723 DECL_CONTEXT (decl
) = std_node
;
6729 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6730 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6731 function in the namespace. */
6733 SET_DECL_ASSEMBLER_NAME (decl
, get_identifier (libname
));
6734 make_decl_rtl (decl
, NULL
);
6736 /* Warn if a function in the namespace for users
6737 is used without an occasion to consider it declared. */
6738 if (name
[0] != '_' || name
[1] != '_')
6739 DECL_ANTICIPATED (decl
) = 1;
6741 /* Possibly apply some default attributes to this built-in function. */
6742 decl_attributes (&decl
, NULL_TREE
, 0);
6747 /* Generate a FUNCTION_DECL with the typical flags for a runtime library
6748 function. Not called directly. */
6751 build_library_fn_1 (name
, operator_code
, type
)
6753 enum tree_code operator_code
;
6756 tree fn
= build_lang_decl (FUNCTION_DECL
, name
, type
);
6757 DECL_EXTERNAL (fn
) = 1;
6758 TREE_PUBLIC (fn
) = 1;
6759 DECL_ARTIFICIAL (fn
) = 1;
6760 TREE_NOTHROW (fn
) = 1;
6761 SET_OVERLOADED_OPERATOR_CODE (fn
, operator_code
);
6762 SET_DECL_LANGUAGE (fn
, lang_c
);
6766 /* Returns the _DECL for a library function with C linkage.
6767 We assume that such functions never throw; if this is incorrect,
6768 callers should unset TREE_NOTHROW. */
6771 build_library_fn (name
, type
)
6775 return build_library_fn_1 (name
, ERROR_MARK
, type
);
6778 /* Returns the _DECL for a library function with C++ linkage. */
6781 build_cp_library_fn (name
, operator_code
, type
)
6783 enum tree_code operator_code
;
6786 tree fn
= build_library_fn_1 (name
, operator_code
, type
);
6787 TREE_NOTHROW (fn
) = TYPE_NOTHROW_P (type
);
6788 DECL_CONTEXT (fn
) = FROB_CONTEXT (current_namespace
);
6789 SET_DECL_LANGUAGE (fn
, lang_cplusplus
);
6790 set_mangled_name_for_decl (fn
);
6794 /* Like build_library_fn, but takes a C string instead of an
6798 build_library_fn_ptr (name
, type
)
6802 return build_library_fn (get_identifier (name
), type
);
6805 /* Like build_cp_library_fn, but takes a C string instead of an
6809 build_cp_library_fn_ptr (name
, type
)
6813 return build_cp_library_fn (get_identifier (name
), ERROR_MARK
, type
);
6816 /* Like build_library_fn, but also pushes the function so that we will
6817 be able to find it via IDENTIFIER_GLOBAL_VALUE. */
6820 push_library_fn (name
, type
)
6823 tree fn
= build_library_fn (name
, type
);
6824 pushdecl_top_level (fn
);
6828 /* Like build_cp_library_fn, but also pushes the function so that it
6829 will be found by normal lookup. */
6832 push_cp_library_fn (operator_code
, type
)
6833 enum tree_code operator_code
;
6836 tree fn
= build_cp_library_fn (ansi_opname (operator_code
),
6843 /* Like push_library_fn, but takes a TREE_LIST of parm types rather than
6847 push_void_library_fn (name
, parmtypes
)
6848 tree name
, parmtypes
;
6850 tree type
= build_function_type (void_type_node
, parmtypes
);
6851 return push_library_fn (name
, type
);
6854 /* Like push_library_fn, but also note that this function throws
6855 and does not return. Used for __throw_foo and the like. */
6858 push_throw_library_fn (name
, type
)
6861 tree fn
= push_library_fn (name
, type
);
6862 TREE_THIS_VOLATILE (fn
) = 1;
6863 TREE_NOTHROW (fn
) = 0;
6867 /* Apply default attributes to a function, if a system function with default
6871 insert_default_attributes (decl
)
6874 if (!DECL_EXTERN_C_FUNCTION_P (decl
))
6876 if (!TREE_PUBLIC (decl
))
6878 c_common_insert_default_attributes (decl
);
6881 /* When we call finish_struct for an anonymous union, we create
6882 default copy constructors and such. But, an anonymous union
6883 shouldn't have such things; this function undoes the damage to the
6884 anonymous union type T.
6886 (The reason that we create the synthesized methods is that we don't
6887 distinguish `union { int i; }' from `typedef union { int i; } U'.
6888 The first is an anonymous union; the second is just an ordinary
6892 fixup_anonymous_aggr (t
)
6897 /* Wipe out memory of synthesized methods */
6898 TYPE_HAS_CONSTRUCTOR (t
) = 0;
6899 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
6900 TYPE_HAS_INIT_REF (t
) = 0;
6901 TYPE_HAS_CONST_INIT_REF (t
) = 0;
6902 TYPE_HAS_ASSIGN_REF (t
) = 0;
6903 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
6905 /* Splice the implicitly generated functions out of the TYPE_METHODS
6907 q
= &TYPE_METHODS (t
);
6910 if (DECL_ARTIFICIAL (*q
))
6911 *q
= TREE_CHAIN (*q
);
6913 q
= &TREE_CHAIN (*q
);
6916 /* ISO C++ 9.5.3. Anonymous unions may not have function members. */
6917 if (TYPE_METHODS (t
))
6918 cp_error_at ("an anonymous union cannot have function members", t
);
6920 /* Anonymous aggregates cannot have fields with ctors, dtors or complex
6921 assignment operators (because they cannot have these methods themselves).
6922 For anonymous unions this is already checked because they are not allowed
6923 in any union, otherwise we have to check it. */
6924 if (TREE_CODE (t
) != UNION_TYPE
)
6928 for (field
= TYPE_FIELDS (t
); field
; field
= TREE_CHAIN (field
))
6929 if (TREE_CODE (field
) == FIELD_DECL
)
6931 type
= TREE_TYPE (field
);
6932 if (CLASS_TYPE_P (type
))
6934 if (TYPE_NEEDS_CONSTRUCTING (type
))
6935 cp_error_at ("member %#D' with constructor not allowed in anonymous aggregate",
6937 if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type
))
6938 cp_error_at ("member %#D' with destructor not allowed in anonymous aggregate",
6940 if (TYPE_HAS_COMPLEX_ASSIGN_REF (type
))
6941 cp_error_at ("member %#D' with copy assignment operator not allowed in anonymous aggregate",
6948 /* Make sure that a declaration with no declarator is well-formed, i.e.
6949 just defines a tagged type or anonymous union.
6951 Returns the type defined, if any. */
6954 check_tag_decl (declspecs
)
6959 int saw_typedef
= 0;
6960 tree ob_modifier
= NULL_TREE
;
6962 register tree t
= NULL_TREE
;
6964 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
6966 register tree value
= TREE_VALUE (link
);
6969 || TREE_CODE (value
) == TYPE_DECL
6970 || (TREE_CODE (value
) == IDENTIFIER_NODE
6971 && IDENTIFIER_GLOBAL_VALUE (value
)
6972 && TREE_CODE (IDENTIFIER_GLOBAL_VALUE (value
)) == TYPE_DECL
))
6976 if (found_type
== 2 && TREE_CODE (value
) == IDENTIFIER_NODE
)
6978 if (! in_system_header
)
6979 cp_pedwarn ("redeclaration of C++ built-in type `%T'", value
);
6984 && ((TREE_CODE (value
) != TYPENAME_TYPE
&& IS_AGGR_TYPE (value
))
6985 || TREE_CODE (value
) == ENUMERAL_TYPE
))
6987 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
6991 else if (value
== ridpointers
[(int) RID_TYPEDEF
])
6993 else if (value
== ridpointers
[(int) RID_FRIEND
])
6995 if (current_class_type
== NULL_TREE
6996 || current_scope () != current_class_type
)
6997 ob_modifier
= value
;
7001 else if (value
== ridpointers
[(int) RID_STATIC
]
7002 || value
== ridpointers
[(int) RID_EXTERN
]
7003 || value
== ridpointers
[(int) RID_AUTO
]
7004 || value
== ridpointers
[(int) RID_REGISTER
]
7005 || value
== ridpointers
[(int) RID_INLINE
]
7006 || value
== ridpointers
[(int) RID_VIRTUAL
]
7007 || value
== ridpointers
[(int) RID_CONST
]
7008 || value
== ridpointers
[(int) RID_VOLATILE
]
7009 || value
== ridpointers
[(int) RID_EXPLICIT
])
7010 ob_modifier
= value
;
7014 error ("multiple types in one declaration");
7016 if (t
== NULL_TREE
&& ! saw_friend
)
7017 pedwarn ("declaration does not declare anything");
7019 /* Check for an anonymous union. */
7020 else if (t
&& IS_AGGR_TYPE_CODE (TREE_CODE (t
))
7021 && TYPE_ANONYMOUS_P (t
))
7023 /* 7/3 In a simple-declaration, the optional init-declarator-list
7024 can be omitted only when declaring a class (clause 9) or
7025 enumeration (7.2), that is, when the decl-specifier-seq contains
7026 either a class-specifier, an elaborated-type-specifier with
7027 a class-key (9.1), or an enum-specifier. In these cases and
7028 whenever a class-specifier or enum-specifier is present in the
7029 decl-specifier-seq, the identifiers in these specifiers are among
7030 the names being declared by the declaration (as class-name,
7031 enum-names, or enumerators, depending on the syntax). In such
7032 cases, and except for the declaration of an unnamed bit-field (9.6),
7033 the decl-specifier-seq shall introduce one or more names into the
7034 program, or shall redeclare a name introduced by a previous
7035 declaration. [Example:
7036 enum { }; // ill-formed
7037 typedef class { }; // ill-formed
7041 error ("missing type-name in typedef-declaration");
7044 /* Anonymous unions are objects, so they can have specifiers. */;
7045 SET_ANON_AGGR_TYPE_P (t
);
7047 if (TREE_CODE (t
) != UNION_TYPE
&& pedantic
&& ! in_system_header
)
7048 pedwarn ("ISO C++ prohibits anonymous structs");
7051 else if (ob_modifier
)
7053 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
7054 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
7055 cp_error ("`%D' can only be specified for functions", ob_modifier
);
7056 else if (ob_modifier
== ridpointers
[(int) RID_FRIEND
])
7057 cp_error ("`%D' can only be specified inside a class", ob_modifier
);
7058 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
7059 cp_error ("`%D' can only be specified for constructors",
7062 cp_error ("`%D' can only be specified for objects and functions",
7069 /* Called when a declaration is seen that contains no names to declare.
7070 If its type is a reference to a structure, union or enum inherited
7071 from a containing scope, shadow that tag name for the current scope
7072 with a forward reference.
7073 If its type defines a new named structure or union
7074 or defines an enum, it is valid but we need not do anything here.
7075 Otherwise, it is an error.
7077 C++: may have to grok the declspecs to learn about static,
7078 complain for anonymous unions. */
7081 shadow_tag (declspecs
)
7084 tree t
= check_tag_decl (declspecs
);
7087 maybe_process_partial_specialization (t
);
7089 /* This is where the variables in an anonymous union are
7090 declared. An anonymous union declaration looks like:
7092 because there is no declarator after the union, the parser
7093 sends that declaration here. */
7094 if (t
&& ANON_AGGR_TYPE_P (t
))
7096 fixup_anonymous_aggr (t
);
7098 if (TYPE_FIELDS (t
))
7100 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
7102 finish_anon_union (decl
);
7107 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
7110 groktypename (typename
)
7113 if (TREE_CODE (typename
) != TREE_LIST
)
7115 return grokdeclarator (TREE_VALUE (typename
),
7116 TREE_PURPOSE (typename
),
7120 /* Decode a declarator in an ordinary declaration or data definition.
7121 This is called as soon as the type information and variable name
7122 have been parsed, before parsing the initializer if any.
7123 Here we create the ..._DECL node, fill in its type,
7124 and put it on the list of decls for the current context.
7125 The ..._DECL node is returned as the value.
7127 Exception: for arrays where the length is not specified,
7128 the type is left null, to be filled in by `cp_finish_decl'.
7130 Function definitions do not come here; they go to start_function
7131 instead. However, external and forward declarations of functions
7132 do go through here. Structure field declarations are done by
7133 grokfield and not through here. */
7136 start_decl (declarator
, declspecs
, initialized
, attributes
, prefix_attributes
)
7137 tree declarator
, declspecs
;
7139 tree attributes
, prefix_attributes
;
7142 register tree type
, tem
;
7144 extern int have_extern_spec
;
7145 extern int used_extern_spec
;
7148 /* See code below that used this. */
7149 int init_written
= initialized
;
7152 /* This should only be done once on the top most decl. */
7153 if (have_extern_spec
&& !used_extern_spec
)
7155 declspecs
= tree_cons (NULL_TREE
, get_identifier ("extern"),
7157 used_extern_spec
= 1;
7160 attributes
= chainon (attributes
, prefix_attributes
);
7162 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
7165 if (decl
== NULL_TREE
|| TREE_CODE (decl
) == VOID_TYPE
)
7168 type
= TREE_TYPE (decl
);
7170 if (type
== error_mark_node
)
7173 context
= DECL_CONTEXT (decl
);
7175 if (initialized
&& context
&& TREE_CODE (context
) == NAMESPACE_DECL
7176 && context
!= current_namespace
&& TREE_CODE (decl
) == VAR_DECL
)
7178 /* When parsing the initializer, lookup should use the object's
7180 push_decl_namespace (context
);
7183 /* We are only interested in class contexts, later. */
7184 if (context
&& TREE_CODE (context
) == NAMESPACE_DECL
)
7185 context
= NULL_TREE
;
7188 /* Is it valid for this decl to have an initializer at all?
7189 If not, set INITIALIZED to zero, which will indirectly
7190 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
7191 switch (TREE_CODE (decl
))
7194 /* typedef foo = bar means give foo the same type as bar.
7195 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
7196 Any other case of an initialization in a TYPE_DECL is an error. */
7197 if (pedantic
|| list_length (declspecs
) > 1)
7199 cp_error ("typedef `%D' is initialized", decl
);
7205 cp_error ("function `%#D' is initialized like a variable", decl
);
7215 if (! toplevel_bindings_p ()
7216 && DECL_EXTERNAL (decl
))
7217 cp_warning ("declaration of `%#D' has `extern' and is initialized",
7219 DECL_EXTERNAL (decl
) = 0;
7220 if (toplevel_bindings_p ())
7221 TREE_STATIC (decl
) = 1;
7223 /* Tell `pushdecl' this is an initialized decl
7224 even though we don't yet have the initializer expression.
7225 Also tell `cp_finish_decl' it may store the real initializer. */
7226 DECL_INITIAL (decl
) = error_mark_node
;
7229 /* Set attributes here so if duplicate decl, will have proper attributes. */
7230 cplus_decl_attributes (&decl
, attributes
, 0);
7232 if (TREE_CODE (decl
) == FUNCTION_DECL
7233 && DECL_DECLARED_INLINE_P (decl
)
7234 && DECL_UNINLINABLE (decl
)
7235 && lookup_attribute ("noinline", DECL_ATTRIBUTES (decl
)))
7236 warning_with_decl (decl
,
7237 "inline function `%s' given attribute noinline");
7239 if (context
&& COMPLETE_TYPE_P (complete_type (context
)))
7241 push_nested_class (context
, 2);
7243 if (TREE_CODE (decl
) == VAR_DECL
)
7245 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
7246 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
7247 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
7250 if (DECL_CONTEXT (field
) != context
)
7252 cp_pedwarn ("ISO C++ does not permit `%T::%D' to be defined as `%T::%D'",
7253 DECL_CONTEXT (field
), DECL_NAME (decl
),
7254 context
, DECL_NAME (decl
));
7255 DECL_CONTEXT (decl
) = DECL_CONTEXT (field
);
7257 /* Static data member are tricky; an in-class initialization
7258 still doesn't provide a definition, so the in-class
7259 declaration will have DECL_EXTERNAL set, but will have an
7260 initialization. Thus, duplicate_decls won't warn
7261 about this situation, and so we check here. */
7262 if (DECL_INITIAL (decl
) && DECL_INITIAL (field
))
7263 cp_error ("duplicate initialization of %D", decl
);
7264 if (duplicate_decls (decl
, field
))
7270 tree field
= check_classfn (context
, decl
);
7271 if (field
&& duplicate_decls (decl
, field
))
7275 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
7276 DECL_IN_AGGR_P (decl
) = 0;
7277 if ((DECL_LANG_SPECIFIC (decl
) && DECL_USE_TEMPLATE (decl
))
7278 || CLASSTYPE_TEMPLATE_INSTANTIATION (context
))
7280 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
7281 /* [temp.expl.spec] An explicit specialization of a static data
7282 member of a template is a definition if the declaration
7283 includes an initializer; otherwise, it is a declaration.
7285 We check for processing_specialization so this only applies
7286 to the new specialization syntax. */
7287 if (DECL_INITIAL (decl
) == NULL_TREE
&& processing_specialization
)
7288 DECL_EXTERNAL (decl
) = 1;
7291 if (DECL_EXTERNAL (decl
) && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
7292 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
7296 /* Enter this declaration into the symbol table. */
7297 tem
= maybe_push_decl (decl
);
7299 if (processing_template_decl
)
7300 tem
= push_template_decl (tem
);
7302 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
7303 /* Tell the back-end to use or not use .common as appropriate. If we say
7304 -fconserve-space, we want this to save .data space, at the expense of
7305 wrong semantics. If we say -fno-conserve-space, we want this to
7306 produce errors about redefs; to do this we force variables into the
7308 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
7311 if (! processing_template_decl
)
7321 tree type
= TREE_TYPE (decl
);
7322 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
7324 if (type
== error_mark_node
)
7327 maybe_push_cleanup_level (type
);
7330 /* Is it valid for this decl to have an initializer at all?
7331 If not, set INITIALIZED to zero, which will indirectly
7332 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
7334 /* Don't allow initializations for incomplete types except for
7335 arrays which might be completed by the initialization. */
7336 if (COMPLETE_TYPE_P (complete_type (type
)))
7337 ; /* A complete type is ok. */
7338 else if (TREE_CODE (type
) != ARRAY_TYPE
)
7340 cp_error ("variable `%#D' has initializer but incomplete type",
7343 type
= TREE_TYPE (decl
) = error_mark_node
;
7345 else if (!COMPLETE_TYPE_P (complete_type (TREE_TYPE (type
))))
7347 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
7348 cp_error ("elements of array `%#D' have incomplete type", decl
);
7349 /* else we already gave an error in start_decl. */
7355 && TREE_CODE (decl
) != TYPE_DECL
7356 && TREE_CODE (decl
) != TEMPLATE_DECL
7357 && type
!= error_mark_node
7358 && IS_AGGR_TYPE (type
)
7359 && ! DECL_EXTERNAL (decl
))
7361 if ((! processing_template_decl
|| ! uses_template_parms (type
))
7362 && !COMPLETE_TYPE_P (complete_type (type
)))
7364 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
7366 /* Change the type so that assemble_variable will give
7367 DECL an rtl we can live with: (mem (const_int 0)). */
7368 type
= TREE_TYPE (decl
) = error_mark_node
;
7372 /* If any base type in the hierarchy of TYPE needs a constructor,
7373 then we set initialized to 1. This way any nodes which are
7374 created for the purposes of initializing this aggregate
7375 will live as long as it does. This is necessary for global
7376 aggregates which do not have their initializers processed until
7377 the end of the file. */
7378 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
7383 DECL_INITIAL (decl
) = NULL_TREE
;
7386 /* Handle initialization of references.
7387 These three arguments are from `cp_finish_decl', and have the
7388 same meaning here that they do there.
7390 Quotes on semantics can be found in ARM 8.4.3. */
7393 grok_reference_init (decl
, type
, init
)
7394 tree decl
, type
, init
;
7398 if (init
== NULL_TREE
)
7400 if ((DECL_LANG_SPECIFIC (decl
) == 0
7401 || DECL_IN_AGGR_P (decl
) == 0)
7402 && ! DECL_THIS_EXTERN (decl
))
7403 cp_error ("`%D' declared as reference but not initialized", decl
);
7407 if (init
== error_mark_node
)
7410 if (TREE_CODE (init
) == CONSTRUCTOR
)
7412 cp_error ("ISO C++ forbids use of initializer list to initialize reference `%D'", decl
);
7416 if (TREE_CODE (init
) == TREE_LIST
)
7417 init
= build_compound_expr (init
);
7419 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
7420 init
= convert_from_reference (init
);
7422 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
7423 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
7425 /* Note: default conversion is only called in very special cases. */
7426 init
= default_conversion (init
);
7429 /* Convert INIT to the reference type TYPE. This may involve the
7430 creation of a temporary, whose lifetime must be the same as that
7431 of the reference. If so, a DECL_STMT for the temporary will be
7432 added just after the DECL_STMT for DECL. That's why we don't set
7433 DECL_INITIAL for local references (instead assigning to them
7434 explicitly); we need to allow the temporary to be initialized
7436 tmp
= convert_to_reference
7437 (type
, init
, CONV_IMPLICIT
,
7438 LOOKUP_ONLYCONVERTING
|LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
,
7441 if (tmp
== error_mark_node
)
7443 else if (tmp
== NULL_TREE
)
7445 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
7449 if (TREE_STATIC (decl
) && !TREE_CONSTANT (tmp
))
7452 DECL_INITIAL (decl
) = tmp
;
7457 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
7458 mucking with forces it does not comprehend (i.e. initialization with a
7459 constructor). If we are at global scope and won't go into COMMON, fill
7460 it in with a dummy CONSTRUCTOR to force the variable into .data;
7461 otherwise we can use error_mark_node. */
7464 obscure_complex_init (decl
, init
)
7467 if (! flag_no_inline
&& TREE_STATIC (decl
))
7469 if (extract_init (decl
, init
))
7473 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
7474 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
7475 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
7479 DECL_INITIAL (decl
) = error_mark_node
;
7484 /* When parsing `int a[] = {1, 2};' we don't know the size of the
7485 array until we finish parsing the initializer. If that's the
7486 situation we're in, update DECL accordingly. */
7489 maybe_deduce_size_from_array_init (decl
, init
)
7493 tree type
= TREE_TYPE (decl
);
7495 if (TREE_CODE (type
) == ARRAY_TYPE
7496 && TYPE_DOMAIN (type
) == NULL_TREE
7497 && TREE_CODE (decl
) != TYPE_DECL
)
7499 /* do_default is really a C-ism to deal with tentative definitions.
7500 But let's leave it here to ease the eventual merge. */
7501 int do_default
= !DECL_EXTERNAL (decl
);
7502 tree initializer
= init
? init
: DECL_INITIAL (decl
);
7503 int failure
= complete_array_type (type
, initializer
, do_default
);
7506 cp_error ("initializer fails to determine size of `%D'", decl
);
7511 cp_error ("array size missing in `%D'", decl
);
7512 /* If a `static' var's size isn't known, make it extern as
7513 well as static, so it does not get allocated. If it's not
7514 `static', then don't mark it extern; finish_incomplete_decl
7515 will give it a default size and it will get allocated. */
7516 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
7517 DECL_EXTERNAL (decl
) = 1;
7520 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
7521 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
7523 cp_error ("zero-size array `%D'", decl
);
7525 layout_decl (decl
, 0);
7529 /* Set DECL_SIZE, DECL_ALIGN, etc. for DECL (a VAR_DECL), and issue
7530 any appropriate error messages regarding the layout. */
7533 layout_var_decl (decl
)
7536 tree type
= TREE_TYPE (decl
);
7538 tree ttype
= target_type (type
);
7541 /* If we haven't already layed out this declaration, do so now.
7542 Note that we must not call complete type for an external object
7543 because it's type might involve templates that we are not
7544 supposed to isntantiate yet. (And it's perfectly legal to say
7545 `extern X x' for some incomplete type `X'.) */
7546 if (!DECL_EXTERNAL (decl
))
7547 complete_type (type
);
7548 if (!DECL_SIZE (decl
) && COMPLETE_TYPE_P (type
))
7549 layout_decl (decl
, 0);
7551 if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
7553 /* An automatic variable with an incomplete type: that is an error.
7554 Don't talk about array types here, since we took care of that
7555 message in grokdeclarator. */
7556 cp_error ("storage size of `%D' isn't known", decl
);
7557 TREE_TYPE (decl
) = error_mark_node
;
7560 /* Keep this code around in case we later want to control debug info
7561 based on whether a type is "used". (jason 1999-11-11) */
7563 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
7564 /* Let debugger know it should output info for this type. */
7565 note_debug_info_needed (ttype
);
7567 if (TREE_STATIC (decl
) && DECL_CLASS_SCOPE_P (decl
))
7568 note_debug_info_needed (DECL_CONTEXT (decl
));
7571 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
7572 && DECL_SIZE (decl
) != NULL_TREE
7573 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
7575 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
7576 constant_expression_warning (DECL_SIZE (decl
));
7578 cp_error ("storage size of `%D' isn't constant", decl
);
7581 if (TREE_STATIC (decl
)
7582 && !DECL_ARTIFICIAL (decl
)
7583 && current_function_decl
7584 && DECL_CONTEXT (decl
) == current_function_decl
)
7585 push_local_name (decl
);
7588 /* If a local static variable is declared in an inline function, or if
7589 we have a weak definition, we must endeavor to create only one
7590 instance of the variable at link-time. */
7593 maybe_commonize_var (decl
)
7596 /* Static data in a function with comdat linkage also has comdat
7598 if (TREE_STATIC (decl
)
7599 /* Don't mess with __FUNCTION__. */
7600 && ! DECL_ARTIFICIAL (decl
)
7601 && current_function_decl
7602 && DECL_CONTEXT (decl
) == current_function_decl
7603 && (DECL_DECLARED_INLINE_P (current_function_decl
)
7604 || DECL_TEMPLATE_INSTANTIATION (current_function_decl
))
7605 && TREE_PUBLIC (current_function_decl
))
7607 /* If flag_weak, we don't need to mess with this, as we can just
7608 make the function weak, and let it refer to its unique local
7609 copy. This works because we don't allow the function to be
7613 if (DECL_INTERFACE_KNOWN (current_function_decl
))
7615 TREE_PUBLIC (decl
) = 1;
7616 DECL_EXTERNAL (decl
) = DECL_EXTERNAL (current_function_decl
);
7618 else if (DECL_INITIAL (decl
) == NULL_TREE
7619 || DECL_INITIAL (decl
) == error_mark_node
)
7621 TREE_PUBLIC (decl
) = 1;
7622 DECL_COMMON (decl
) = 1;
7624 /* else we lose. We can only do this if we can use common,
7625 which we can't if it has been initialized. */
7627 if (!TREE_PUBLIC (decl
))
7629 cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl
);
7630 cp_warning_at (" you can work around this by removing the initializer", decl
);
7634 comdat_linkage (decl
);
7636 else if (DECL_LANG_SPECIFIC (decl
) && DECL_COMDAT (decl
))
7637 /* Set it up again; we might have set DECL_INITIAL since the last
7639 comdat_linkage (decl
);
7642 /* Issue an error message if DECL is an uninitialized const variable. */
7645 check_for_uninitialized_const_var (decl
)
7648 tree type
= TREE_TYPE (decl
);
7650 /* ``Unless explicitly declared extern, a const object does not have
7651 external linkage and must be initialized. ($8.4; $12.1)'' ARM
7653 if (TREE_CODE (decl
) == VAR_DECL
7654 && TREE_CODE (type
) != REFERENCE_TYPE
7655 && CP_TYPE_CONST_P (type
)
7656 && !TYPE_NEEDS_CONSTRUCTING (type
)
7657 && !DECL_INITIAL (decl
))
7658 cp_error ("uninitialized const `%D'", decl
);
7661 /* Verify INIT (the initializer for DECL), and record the
7662 initialization in DECL_INITIAL, if appropriate. Returns a new
7666 check_initializer (decl
, init
)
7672 if (TREE_CODE (decl
) == FIELD_DECL
)
7675 type
= TREE_TYPE (decl
);
7677 /* If `start_decl' didn't like having an initialization, ignore it now. */
7678 if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
7681 /* Check the initializer. */
7684 /* Things that are going to be initialized need to have complete
7686 TREE_TYPE (decl
) = type
= complete_type (TREE_TYPE (decl
));
7688 if (type
== error_mark_node
)
7689 /* We will have already complained. */
7691 else if (COMPLETE_TYPE_P (type
) && !TREE_CONSTANT (TYPE_SIZE (type
)))
7693 cp_error ("variable-sized object `%D' may not be initialized", decl
);
7696 else if (TREE_CODE (type
) == ARRAY_TYPE
7697 && !COMPLETE_TYPE_P (complete_type (TREE_TYPE (type
))))
7699 cp_error ("elements of array `%#D' have incomplete type", decl
);
7702 else if (TREE_CODE (type
) != ARRAY_TYPE
&& !COMPLETE_TYPE_P (type
))
7704 cp_error ("`%D' has incomplete type", decl
);
7705 TREE_TYPE (decl
) = error_mark_node
;
7710 if (TREE_CODE (decl
) == CONST_DECL
)
7712 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
7714 DECL_INITIAL (decl
) = init
;
7716 my_friendly_assert (init
!= NULL_TREE
, 149);
7719 else if (!DECL_EXTERNAL (decl
) && TREE_CODE (type
) == REFERENCE_TYPE
)
7721 init
= grok_reference_init (decl
, type
, init
);
7723 init
= obscure_complex_init (decl
, init
);
7727 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
7729 if (TREE_CODE (type
) == ARRAY_TYPE
)
7730 init
= digest_init (type
, init
, (tree
*) 0);
7731 else if (TREE_CODE (init
) == CONSTRUCTOR
7732 && TREE_HAS_CONSTRUCTOR (init
))
7734 if (TYPE_NON_AGGREGATE_CLASS (type
))
7736 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7738 init
= error_mark_node
;
7741 goto dont_use_constructor
;
7746 dont_use_constructor
:
7747 if (TREE_CODE (init
) != TREE_VEC
)
7748 init
= store_init_value (decl
, init
);
7752 /* We must hide the initializer so that expand_decl
7753 won't try to do something it does not understand. */
7754 init
= obscure_complex_init (decl
, init
);
7756 else if (DECL_EXTERNAL (decl
))
7758 else if (TYPE_P (type
)
7759 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
7761 tree core_type
= strip_array_types (type
);
7763 if (! TYPE_NEEDS_CONSTRUCTING (core_type
))
7765 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (core_type
))
7766 cp_error ("structure `%D' with uninitialized const members", decl
);
7767 if (CLASSTYPE_REF_FIELDS_NEED_INIT (core_type
))
7768 cp_error ("structure `%D' with uninitialized reference members",
7772 check_for_uninitialized_const_var (decl
);
7774 if (COMPLETE_TYPE_P (type
) && TYPE_NEEDS_CONSTRUCTING (type
))
7775 init
= obscure_complex_init (decl
, NULL_TREE
);
7779 check_for_uninitialized_const_var (decl
);
7784 /* If DECL is not a local variable, give it RTL. */
7787 make_rtl_for_nonlocal_decl (decl
, init
, asmspec
)
7790 const char *asmspec
;
7792 int toplev
= toplevel_bindings_p ();
7795 /* Handle non-variables up front. */
7796 if (TREE_CODE (decl
) != VAR_DECL
)
7798 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7802 /* If we see a class member here, it should be a static data
7804 if (DECL_LANG_SPECIFIC (decl
) && DECL_IN_AGGR_P (decl
))
7806 my_friendly_assert (TREE_STATIC (decl
), 19990828);
7807 /* An in-class declaration of a static data member should be
7808 external; it is only a declaration, and not a definition. */
7809 if (init
== NULL_TREE
)
7810 my_friendly_assert (DECL_EXTERNAL (decl
), 20000723);
7813 /* Set the DECL_ASSEMBLER_NAME for the variable. */
7816 SET_DECL_ASSEMBLER_NAME (decl
, get_identifier (asmspec
));
7817 /* The `register' keyword, when used together with an
7818 asm-specification, indicates that the variable should be
7819 placed in a particular register. */
7820 if (DECL_REGISTER (decl
))
7821 DECL_C_HARD_REGISTER (decl
) = 1;
7824 /* We don't create any RTL for local variables. */
7825 if (DECL_FUNCTION_SCOPE_P (decl
) && !TREE_STATIC (decl
))
7828 /* We defer emission of local statics until the corresponding
7829 DECL_STMT is expanded. */
7830 defer_p
= DECL_FUNCTION_SCOPE_P (decl
) || DECL_VIRTUAL_P (decl
);
7832 /* We try to defer namespace-scope static constants so that they are
7833 not emitted into the object file unncessarily. */
7834 if (!DECL_VIRTUAL_P (decl
)
7835 && TREE_READONLY (decl
)
7836 && DECL_INITIAL (decl
) != NULL_TREE
7837 && DECL_INITIAL (decl
) != error_mark_node
7838 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
))
7840 && !TREE_PUBLIC (decl
))
7842 /* Fool with the linkage according to #pragma interface. */
7843 if (!interface_unknown
)
7845 TREE_PUBLIC (decl
) = 1;
7846 DECL_EXTERNAL (decl
) = interface_only
;
7852 /* If we're deferring the variable, we only need to make RTL if
7853 there's an ASMSPEC. Otherwise, we'll lazily create it later when
7854 we need it. (There's no way to lazily create RTL for things that
7855 have assembly specs because the information about the specifier
7856 isn't stored in the tree, yet) */
7857 if (defer_p
&& asmspec
)
7858 make_decl_rtl (decl
, asmspec
);
7859 /* If we're not deferring, go ahead and assemble the variable. */
7861 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
7864 /* The old ARM scoping rules injected variables declared in the
7865 initialization statement of a for-statement into the surrounding
7866 scope. We support this usage, in order to be backward-compatible.
7867 DECL is a just-declared VAR_DECL; if necessary inject its
7868 declaration into the surrounding scope. */
7871 maybe_inject_for_scope_var (decl
)
7874 if (!DECL_NAME (decl
))
7877 if (current_binding_level
->is_for_scope
)
7879 struct binding_level
*outer
7880 = current_binding_level
->level_chain
;
7882 /* Check to see if the same name is already bound at the outer
7883 level, either because it was directly declared, or because a
7884 dead for-decl got preserved. In either case, the code would
7885 not have been valid under the ARM scope rules, so clear
7886 is_for_scope for the current_binding_level.
7888 Otherwise, we need to preserve the temp slot for decl to last
7889 into the outer binding level. */
7892 = TREE_CHAIN (IDENTIFIER_BINDING (DECL_NAME (decl
)));
7894 if (outer_binding
&& BINDING_LEVEL (outer_binding
) == outer
7895 && (TREE_CODE (BINDING_VALUE (outer_binding
))
7897 && DECL_DEAD_FOR_LOCAL (BINDING_VALUE (outer_binding
)))
7899 BINDING_VALUE (outer_binding
)
7900 = DECL_SHADOWED_FOR_VAR (BINDING_VALUE (outer_binding
));
7901 current_binding_level
->is_for_scope
= 0;
7903 else if (DECL_IN_MEMORY_P (decl
))
7904 preserve_temp_slots (DECL_RTL (decl
));
7908 /* Generate code to initialize DECL (a local variable). */
7911 initialize_local_var (decl
, init
, flags
)
7916 tree type
= TREE_TYPE (decl
);
7918 /* If the type is bogus, don't bother initializing the variable. */
7919 if (type
== error_mark_node
)
7922 if (DECL_SIZE (decl
) == NULL_TREE
&& !TREE_STATIC (decl
))
7924 /* If we used it already as memory, it must stay in memory. */
7925 DECL_INITIAL (decl
) = NULL_TREE
;
7926 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
7929 /* Local statics are handled differently from ordinary automatic
7931 if (TREE_STATIC (decl
))
7933 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
7934 || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type
))
7935 expand_static_init (decl
, init
);
7939 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
7943 /* Compute and store the initial value. */
7944 already_used
= TREE_USED (decl
) || TREE_USED (type
);
7946 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
7948 int saved_stmts_are_full_exprs_p
;
7950 my_friendly_assert (building_stmt_tree (), 20000906);
7951 saved_stmts_are_full_exprs_p
= stmts_are_full_exprs_p ();
7952 current_stmt_tree ()->stmts_are_full_exprs_p
= 1;
7953 finish_expr_stmt (build_aggr_init (decl
, init
, flags
));
7954 current_stmt_tree ()->stmts_are_full_exprs_p
=
7955 saved_stmts_are_full_exprs_p
;
7958 /* Set this to 0 so we can tell whether an aggregate which was
7959 initialized was ever used. Don't do this if it has a
7960 destructor, so we don't complain about the 'resource
7961 allocation is initialization' idiom. Now set
7962 attribute((unused)) on types so decls of that type will be
7963 marked used. (see TREE_USED, above.) */
7964 if (TYPE_NEEDS_CONSTRUCTING (type
)
7966 && TYPE_HAS_TRIVIAL_DESTRUCTOR (type
)
7967 && DECL_NAME (decl
))
7968 TREE_USED (decl
) = 0;
7969 else if (already_used
)
7970 TREE_USED (decl
) = 1;
7974 /* Generate code to destroy DECL (a local variable). */
7977 destroy_local_var (decl
)
7980 tree type
= TREE_TYPE (decl
);
7983 /* Only variables get cleaned up. */
7984 if (TREE_CODE (decl
) != VAR_DECL
)
7987 /* And only things with destructors need cleaning up. */
7988 if (type
== error_mark_node
7989 || TYPE_HAS_TRIVIAL_DESTRUCTOR (type
))
7992 if (TREE_CODE (decl
) == VAR_DECL
&&
7993 (DECL_EXTERNAL (decl
) || TREE_STATIC (decl
)))
7994 /* We don't clean up things that aren't defined in this
7995 translation unit, or that need a static cleanup. The latter
7996 are handled by finish_file. */
7999 /* Compute the cleanup. */
8000 cleanup
= maybe_build_cleanup (decl
);
8002 /* Record the cleanup required for this declaration. */
8003 if (DECL_SIZE (decl
) && TREE_TYPE (decl
) != error_mark_node
8005 finish_decl_cleanup (decl
, cleanup
);
8008 /* Finish processing of a declaration;
8009 install its line number and initial value.
8010 If the length of an array type is not known before,
8011 it must be determined now, from the initial value, or it is an error.
8013 INIT holds the value of an initializer that should be allowed to escape
8016 FLAGS is LOOKUP_ONLYCONVERTING if the = init syntax was used, else 0
8017 if the (init) syntax was used. */
8020 cp_finish_decl (decl
, init
, asmspec_tree
, flags
)
8026 tree ttype
= NULL_TREE
;
8027 const char *asmspec
= NULL
;
8028 int was_readonly
= 0;
8033 error ("assignment (not initialization) in declaration");
8037 /* If a name was specified, get the string. */
8039 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
8041 if (init
&& TREE_CODE (init
) == NAMESPACE_DECL
)
8043 cp_error ("cannot initialize `%D' to namespace `%D'",
8048 if (current_class_type
8049 && CP_DECL_CONTEXT (decl
) == current_class_type
8050 && TYPE_BEING_DEFINED (current_class_type
)
8051 && (DECL_INITIAL (decl
) || init
))
8052 DECL_INITIALIZED_IN_CLASS_P (decl
) = 1;
8054 if (TREE_CODE (decl
) == VAR_DECL
8055 && DECL_CONTEXT (decl
)
8056 && TREE_CODE (DECL_CONTEXT (decl
)) == NAMESPACE_DECL
8057 && DECL_CONTEXT (decl
) != current_namespace
8060 /* Leave the namespace of the object. */
8061 pop_decl_namespace ();
8064 type
= TREE_TYPE (decl
);
8066 if (type
== error_mark_node
)
8069 if (TYPE_HAS_MUTABLE_P (type
))
8070 TREE_READONLY (decl
) = 0;
8072 if (processing_template_decl
)
8074 /* Add this declaration to the statement-tree. */
8075 if (at_function_scope_p ()
8076 && TREE_CODE (decl
) != RESULT_DECL
)
8077 add_decl_stmt (decl
);
8079 if (init
&& DECL_INITIAL (decl
))
8080 DECL_INITIAL (decl
) = init
;
8084 /* Parameters are handled by store_parm_decls, not cp_finish_decl. */
8085 my_friendly_assert (TREE_CODE (decl
) != PARM_DECL
, 19990828);
8087 /* Take care of TYPE_DECLs up front. */
8088 if (TREE_CODE (decl
) == TYPE_DECL
)
8090 if (init
&& DECL_INITIAL (decl
))
8092 /* typedef foo = bar; store the type of bar as the type of foo. */
8093 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
8094 DECL_INITIAL (decl
) = init
= NULL_TREE
;
8096 if (type
!= error_mark_node
8097 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
8099 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
8100 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
8101 set_identifier_type_value (DECL_NAME (decl
), type
);
8102 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
8104 GNU_xref_decl (current_function_decl
, decl
);
8106 /* If we have installed this as the canonical typedef for this
8107 type, and that type has not been defined yet, delay emitting
8108 the debug information for it, as we will emit it later. */
8109 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
8110 && !COMPLETE_TYPE_P (TREE_TYPE (decl
)))
8111 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
8113 rest_of_decl_compilation (decl
, NULL
,
8114 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
8118 if (TREE_CODE (decl
) != FUNCTION_DECL
)
8119 ttype
= target_type (type
);
8121 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
8122 && TYPE_NEEDS_CONSTRUCTING (type
))
8124 /* Currently, GNU C++ puts constants in text space, making them
8125 impossible to initialize. In the future, one would hope for
8126 an operating system which understood the difference between
8127 initialization and the running of a program. */
8129 TREE_READONLY (decl
) = 0;
8132 if (TREE_CODE (decl
) == FIELD_DECL
&& asmspec
)
8134 /* This must override the asm specifier which was placed by
8135 grokclassfn. Lay this out fresh. */
8136 SET_DECL_RTL (TREE_TYPE (decl
), NULL_RTX
);
8137 SET_DECL_ASSEMBLER_NAME (decl
, get_identifier (asmspec
));
8138 make_decl_rtl (decl
, asmspec
);
8141 /* Deduce size of array from initialization, if not already known. */
8142 init
= check_initializer (decl
, init
);
8143 maybe_deduce_size_from_array_init (decl
, init
);
8145 GNU_xref_decl (current_function_decl
, decl
);
8147 /* Add this declaration to the statement-tree. This needs to happen
8148 after the call to check_initializer so that the DECL_STMT for a
8149 reference temp is added before the DECL_STMT for the reference itself. */
8150 if (building_stmt_tree ()
8151 && at_function_scope_p ()
8152 && TREE_CODE (decl
) != RESULT_DECL
)
8153 add_decl_stmt (decl
);
8155 if (TREE_CODE (decl
) == VAR_DECL
)
8156 layout_var_decl (decl
);
8158 /* Output the assembler code and/or RTL code for variables and functions,
8159 unless the type is an undefined structure or union.
8160 If not, it will get done when the type is completed. */
8161 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
8162 || TREE_CODE (decl
) == RESULT_DECL
)
8164 if (TREE_CODE (decl
) == VAR_DECL
)
8165 maybe_commonize_var (decl
);
8167 make_rtl_for_nonlocal_decl (decl
, init
, asmspec
);
8169 if (TREE_CODE (type
) == FUNCTION_TYPE
8170 || TREE_CODE (type
) == METHOD_TYPE
)
8171 abstract_virtuals_error (decl
,
8172 strip_array_types (TREE_TYPE (type
)));
8174 abstract_virtuals_error (decl
, strip_array_types (type
));
8176 if (TREE_CODE (decl
) == FUNCTION_DECL
)
8178 else if (DECL_EXTERNAL (decl
)
8179 && ! (DECL_LANG_SPECIFIC (decl
)
8180 && DECL_NOT_REALLY_EXTERN (decl
)))
8183 DECL_INITIAL (decl
) = init
;
8185 else if (TREE_CODE (CP_DECL_CONTEXT (decl
)) == FUNCTION_DECL
)
8187 /* This is a local declaration. */
8188 if (doing_semantic_analysis_p ())
8189 maybe_inject_for_scope_var (decl
);
8190 /* Initialize the local variable. But, if we're building a
8191 statement-tree, we'll do the initialization when we
8193 if (processing_template_decl
)
8195 if (init
|| DECL_INITIAL (decl
) == error_mark_node
)
8196 DECL_INITIAL (decl
) = init
;
8200 /* If we're not building RTL, then we need to do so
8202 my_friendly_assert (building_stmt_tree (), 20000906);
8203 /* Initialize the variable. */
8204 initialize_local_var (decl
, init
, flags
);
8205 /* Clean up the variable. */
8206 destroy_local_var (decl
);
8209 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
8211 /* Cleanups for static variables are handled by `finish_file'. */
8212 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
8213 || TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type
))
8214 expand_static_init (decl
, init
);
8218 /* Undo call to `pushclass' that was done in `start_decl'
8219 due to initialization of qualified member variable.
8220 I.e., Foo::x = 10; */
8222 tree context
= CP_DECL_CONTEXT (decl
);
8225 && (TREE_CODE (decl
) == VAR_DECL
8226 /* We also have a pushclass done that we need to undo here
8227 if we're at top level and declare a method. */
8228 || TREE_CODE (decl
) == FUNCTION_DECL
)
8229 /* If size hasn't been set, we're still defining it,
8230 and therefore inside the class body; don't pop
8231 the binding level.. */
8232 && COMPLETE_TYPE_P (context
)
8233 && context
== current_class_type
)
8234 pop_nested_class ();
8241 TREE_READONLY (decl
) = 1;
8244 /* This is here for a midend callback from c-common.c */
8247 finish_decl (decl
, init
, asmspec_tree
)
8251 cp_finish_decl (decl
, init
, asmspec_tree
, 0);
8254 /* Returns a declaration for a VAR_DECL as if:
8256 extern "C" TYPE NAME;
8258 had been seen. Used to create compiler-generated global
8262 declare_global_var (name
, type
)
8268 push_to_top_level ();
8269 decl
= build_decl (VAR_DECL
, name
, type
);
8270 TREE_PUBLIC (decl
) = 1;
8271 DECL_EXTERNAL (decl
) = 1;
8272 DECL_ARTIFICIAL (decl
) = 1;
8274 cp_finish_decl (decl
, NULL_TREE
, NULL_TREE
, 0);
8275 pop_from_top_level ();
8280 /* Returns a pointer to the `atexit' function. Note that if
8281 FLAG_USE_CXA_ATEXIT is non-zero, then this will actually be the new
8282 `__cxa_atexit' function specified in the IA64 C++ ABI. */
8296 if (flag_use_cxa_atexit
)
8298 /* The declaration for `__cxa_atexit' is:
8300 int __cxa_atexit (void (*)(void *), void *, void *)
8302 We build up the argument types and then then function type
8305 /* First, build the pointer-to-function type for the first
8307 arg_types
= tree_cons (NULL_TREE
, ptr_type_node
, void_list_node
);
8308 fn_type
= build_function_type (void_type_node
, arg_types
);
8309 fn_ptr_type
= build_pointer_type (fn_type
);
8310 /* Then, build the rest of the argument types. */
8311 arg_types
= tree_cons (NULL_TREE
, ptr_type_node
, void_list_node
);
8312 arg_types
= tree_cons (NULL_TREE
, ptr_type_node
, arg_types
);
8313 arg_types
= tree_cons (NULL_TREE
, fn_ptr_type
, arg_types
);
8314 /* And the final __cxa_atexit type. */
8315 fn_type
= build_function_type (integer_type_node
, arg_types
);
8316 fn_ptr_type
= build_pointer_type (fn_type
);
8317 name
= "__cxa_atexit";
8321 /* The declaration for `atexit' is:
8323 int atexit (void (*)());
8325 We build up the argument types and then then function type
8327 fn_type
= build_function_type (void_type_node
, void_list_node
);
8328 fn_ptr_type
= build_pointer_type (fn_type
);
8329 arg_types
= tree_cons (NULL_TREE
, fn_ptr_type
, void_list_node
);
8330 /* Build the final atexit type. */
8331 fn_type
= build_function_type (integer_type_node
, arg_types
);
8335 /* Now, build the function declaration. */
8336 push_lang_context (lang_name_c
);
8337 atexit_fndecl
= build_library_fn_ptr (name
, fn_type
);
8338 mark_used (atexit_fndecl
);
8339 pop_lang_context ();
8340 atexit_node
= default_conversion (atexit_fndecl
);
8345 /* Returns the __dso_handle VAR_DECL. */
8348 get_dso_handle_node ()
8350 if (dso_handle_node
)
8351 return dso_handle_node
;
8353 /* Declare the variable. */
8354 dso_handle_node
= declare_global_var (get_identifier ("__dso_handle"),
8357 return dso_handle_node
;
8360 /* Begin a new function with internal linkage whose job will be simply
8361 to destroy some particular variable. */
8366 static int counter
= 0;
8367 int old_interface_unknown
= interface_unknown
;
8373 push_to_top_level ();
8375 /* No need to mangle this. */
8376 push_lang_context (lang_name_c
);
8378 interface_unknown
= 1;
8380 /* Build the parameter-types. */
8381 parmtypes
= void_list_node
;
8382 /* Functions passed to __cxa_atexit take an additional parameter.
8383 We'll just ignore it. After we implement the new calling
8384 convention for destructors, we can eliminate the use of
8385 additional cleanup functions entirely in the -fnew-abi case. */
8386 if (flag_use_cxa_atexit
)
8387 parmtypes
= tree_cons (NULL_TREE
, ptr_type_node
, parmtypes
);
8388 /* Build the function type itself. */
8389 fntype
= build_function_type (void_type_node
, parmtypes
);
8390 /* Build the name of the function. */
8391 sprintf (name
, "__tcf_%d", counter
++);
8392 /* Build the function declaration. */
8393 fndecl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), fntype
);
8394 /* It's a function with internal linkage, generated by the
8396 TREE_PUBLIC (fndecl
) = 0;
8397 DECL_ARTIFICIAL (fndecl
) = 1;
8398 /* Make the function `inline' so that it is only emitted if it is
8399 actually needed. It is unlikely that it will be inlined, since
8400 it is only called via a function pointer, but we avoid unncessary
8401 emissions this way. */
8402 DECL_INLINE (fndecl
) = 1;
8403 /* Build the parameter. */
8404 if (flag_use_cxa_atexit
)
8408 parmdecl
= build_decl (PARM_DECL
, NULL_TREE
, ptr_type_node
);
8409 DECL_CONTEXT (parmdecl
) = fndecl
;
8410 DECL_ARG_TYPE (parmdecl
) = ptr_type_node
;
8411 TREE_USED (parmdecl
) = 1;
8412 DECL_ARGUMENTS (fndecl
) = parmdecl
;
8416 start_function (/*specs=*/NULL_TREE
, fndecl
, NULL_TREE
, SF_PRE_PARSED
);
8419 interface_unknown
= old_interface_unknown
;
8421 pop_lang_context ();
8423 return current_function_decl
;
8426 /* Finish the cleanup function begun by start_cleanup_fn. */
8433 expand_body (finish_function (0));
8435 pop_from_top_level ();
8438 /* Generate code to handle the destruction of DECL, an object with
8439 static storage duration. */
8442 register_dtor_fn (decl
)
8450 int saved_flag_access_control
;
8452 if (TYPE_HAS_TRIVIAL_DESTRUCTOR (TREE_TYPE (decl
)))
8455 /* Call build_cleanup before we enter the anonymous function so that
8456 any access checks will be done relative to the current scope,
8457 rather than the scope of the anonymous function. */
8458 build_cleanup (decl
);
8460 /* Now start the function. */
8461 cleanup
= start_cleanup_fn ();
8463 /* Now, recompute the cleanup. It may contain SAVE_EXPRs that refer
8464 to the original function, rather than the anonymous one. That
8465 will make the back-end think that nested functions are in use,
8466 which causes confusion. */
8467 saved_flag_access_control
= flag_access_control
;
8468 flag_access_control
= 0;
8469 fcall
= build_cleanup (decl
);
8470 flag_access_control
= saved_flag_access_control
;
8472 /* Create the body of the anonymous function. */
8473 compound_stmt
= begin_compound_stmt (/*has_no_scope=*/0);
8474 finish_expr_stmt (fcall
);
8475 finish_compound_stmt (/*has_no_scope=*/0, compound_stmt
);
8478 /* Call atexit with the cleanup function. */
8479 mark_addressable (cleanup
);
8480 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
8481 if (flag_use_cxa_atexit
)
8483 args
= tree_cons (NULL_TREE
, get_dso_handle_node (), NULL_TREE
);
8484 args
= tree_cons (NULL_TREE
, null_pointer_node
, args
);
8485 args
= tree_cons (NULL_TREE
, cleanup
, args
);
8488 args
= tree_cons (NULL_TREE
, cleanup
, NULL_TREE
);
8489 finish_expr_stmt (build_function_call (get_atexit_node (), args
));
8493 expand_static_init (decl
, init
)
8497 tree oldstatic
= value_member (decl
, static_aggregates
);
8501 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
8502 cp_error ("multiple initializations given for `%D'", decl
);
8504 else if (! toplevel_bindings_p ())
8506 /* Emit code to perform this initialization but once. */
8513 /* Emit code to perform this initialization but once. This code
8516 static int guard = 0;
8518 // Do initialization.
8520 // Register variable for destruction at end of program.
8523 Note that the `temp' variable is only set to 1 *after* the
8524 initialization is complete. This ensures that an exception,
8525 thrown during the construction, will cause the variable to
8526 reinitialized when we pass through this code again, as per:
8530 If the initialization exits by throwing an exception, the
8531 initialization is not complete, so it will be tried again
8532 the next time control enters the declaration.
8534 In theory, this process should be thread-safe, too; multiple
8535 threads should not be able to initialize the variable more
8536 than once. We don't yet attempt to ensure thread-safety. */
8538 /* Create the guard variable. */
8539 guard
= get_guard (decl
);
8541 /* Begin the conditional initialization. */
8542 if_stmt
= begin_if_stmt ();
8543 finish_if_stmt_cond (get_guard_cond (guard
), if_stmt
);
8544 then_clause
= begin_compound_stmt (/*has_no_scope=*/0);
8546 /* Do the initialization itself. */
8547 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
8548 || (init
&& TREE_CODE (init
) == TREE_LIST
))
8549 assignment
= build_aggr_init (decl
, init
, 0);
8551 /* The initialization we're doing here is just a bitwise
8553 assignment
= build (INIT_EXPR
, TREE_TYPE (decl
), decl
, init
);
8555 assignment
= NULL_TREE
;
8557 /* Once the assignment is complete, set TEMP to 1. Since the
8558 construction of the static object is complete at this point,
8559 we want to make sure TEMP is set to 1 even if a temporary
8560 constructed during the initialization throws an exception
8561 when it is destroyed. So, we combine the initialization and
8562 the assignment to TEMP into a single expression, ensuring
8563 that when we call finish_expr_stmt the cleanups will not be
8564 run until after TEMP is set to 1. */
8565 guard_init
= set_guard (guard
);
8568 assignment
= tree_cons (NULL_TREE
, assignment
,
8569 build_tree_list (NULL_TREE
,
8571 assignment
= build_compound_expr (assignment
);
8574 assignment
= guard_init
;
8575 finish_expr_stmt (assignment
);
8577 /* Use atexit to register a function for destroying this static
8579 register_dtor_fn (decl
);
8581 finish_compound_stmt (/*has_no_scope=*/0, then_clause
);
8582 finish_then_clause (if_stmt
);
8586 static_aggregates
= tree_cons (init
, decl
, static_aggregates
);
8589 /* Finish the declaration of a catch-parameter. */
8592 start_handler_parms (declspecs
, declarator
)
8599 decl
= grokdeclarator (declarator
, declspecs
, CATCHPARM
,
8601 if (decl
== NULL_TREE
)
8602 error ("invalid catch parameter");
8611 /* Make TYPE a complete type based on INITIAL_VALUE.
8612 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
8613 2 if there was no information (in which case assume 0 if DO_DEFAULT). */
8616 complete_array_type (type
, initial_value
, do_default
)
8617 tree type
, initial_value
;
8620 register tree maxindex
= NULL_TREE
;
8625 /* An array of character type can be initialized from a
8626 brace-enclosed string constant. */
8627 if (char_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (type
)))
8628 && TREE_CODE (initial_value
) == CONSTRUCTOR
8629 && CONSTRUCTOR_ELTS (initial_value
)
8630 && (TREE_CODE (TREE_VALUE (CONSTRUCTOR_ELTS (initial_value
)))
8632 && TREE_CHAIN (CONSTRUCTOR_ELTS (initial_value
)) == NULL_TREE
)
8633 initial_value
= TREE_VALUE (CONSTRUCTOR_ELTS (initial_value
));
8635 /* Note MAXINDEX is really the maximum index, one less than the
8637 if (TREE_CODE (initial_value
) == STRING_CST
)
8640 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
8641 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
8644 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
8646 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
8648 maxindex
= ssize_int (-1);
8649 for (; elts
; elts
= TREE_CHAIN (elts
))
8651 if (TREE_PURPOSE (elts
))
8652 maxindex
= TREE_PURPOSE (elts
);
8654 maxindex
= size_binop (PLUS_EXPR
, maxindex
, ssize_int (1));
8656 maxindex
= copy_node (maxindex
);
8660 /* Make an error message unless that happened already. */
8661 if (initial_value
!= error_mark_node
)
8664 initial_value
= NULL_TREE
;
8666 /* Prevent further error messages. */
8667 maxindex
= build_int_2 (0, 0);
8674 maxindex
= build_int_2 (0, 0);
8683 domain
= build_index_type (maxindex
);
8684 TYPE_DOMAIN (type
) = domain
;
8686 if (! TREE_TYPE (maxindex
))
8687 TREE_TYPE (maxindex
) = domain
;
8689 itype
= TREE_TYPE (initial_value
);
8692 if (itype
&& !TYPE_DOMAIN (itype
))
8693 TYPE_DOMAIN (itype
) = domain
;
8694 /* The type of the main variant should never be used for arrays
8695 of different sizes. It should only ever be completed with the
8696 size of the array. */
8697 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
8698 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = domain
;
8701 /* Lay out the type now that we can get the real answer. */
8708 /* Return zero if something is declared to be a member of type
8709 CTYPE when in the context of CUR_TYPE. STRING is the error
8710 message to print in that case. Otherwise, quietly return 1. */
8713 member_function_or_else (ctype
, cur_type
, flags
)
8714 tree ctype
, cur_type
;
8715 enum overload_flags flags
;
8717 if (ctype
&& ctype
!= cur_type
)
8719 if (flags
== DTOR_FLAG
)
8720 cp_error ("destructor for alien class `%T' cannot be a member",
8723 cp_error ("constructor for alien class `%T' cannot be a member",
8730 /* Subroutine of `grokdeclarator'. */
8732 /* Generate errors possibly applicable for a given set of specifiers.
8733 This is for ARM $7.1.2. */
8736 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
8739 int virtualp
, quals
, friendp
, raises
, inlinep
;
8742 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
8744 cp_error ("`%D' declared as an `inline' %s", object
, type
);
8746 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
8749 cp_error_at ("`%D' declared as a friend", object
);
8751 && (TREE_CODE (object
) == TYPE_DECL
8752 || (!TYPE_PTRFN_P (TREE_TYPE (object
))
8753 && !TYPE_PTRMEMFUNC_P (TREE_TYPE (object
)))))
8754 cp_error_at ("`%D' declared with an exception specification", object
);
8757 /* CTYPE is class type, or null if non-class.
8758 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
8760 DECLARATOR is the function's name.
8761 VIRTUALP is truthvalue of whether the function is virtual or not.
8762 FLAGS are to be passed through to `grokclassfn'.
8763 QUALS are qualifiers indicating whether the function is `const'
8765 RAISES is a list of exceptions that this function can raise.
8766 CHECK is 1 if we must find this method in CTYPE, 0 if we should
8767 not look, and -1 if we should not call `grokclassfn' at all.
8769 Returns `NULL_TREE' if something goes wrong, after issuing
8770 applicable error messages. */
8773 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
8774 raises
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
8775 template_count
, in_namespace
)
8778 tree orig_declarator
;
8780 enum overload_flags flags
;
8782 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
8786 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
8787 int has_default_arg
= 0;
8792 type
= build_exception_variant (type
, raises
);
8795 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
8796 /* Propagate volatile out from type to decl. */
8797 if (TYPE_VOLATILE (type
))
8798 TREE_THIS_VOLATILE (decl
) = 1;
8800 /* If this decl has namespace scope, set that up. */
8802 set_decl_namespace (decl
, in_namespace
, friendp
);
8804 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
8806 /* `main' and builtins have implicit 'C' linkage. */
8807 if ((MAIN_NAME_P (declarator
)
8808 || (IDENTIFIER_LENGTH (declarator
) > 10
8809 && IDENTIFIER_POINTER (declarator
)[0] == '_'
8810 && IDENTIFIER_POINTER (declarator
)[1] == '_'
8811 && strncmp (IDENTIFIER_POINTER (declarator
)+2, "builtin_", 8) == 0))
8812 && current_lang_name
== lang_name_cplusplus
8813 && ctype
== NULL_TREE
8814 /* NULL_TREE means global namespace. */
8815 && DECL_CONTEXT (decl
) == NULL_TREE
)
8816 SET_DECL_LANGUAGE (decl
, lang_c
);
8818 /* Should probably propagate const out from type to decl I bet (mrs). */
8821 DECL_STATIC_FUNCTION_P (decl
) = 1;
8822 DECL_CONTEXT (decl
) = ctype
;
8826 DECL_CONTEXT (decl
) = ctype
;
8828 if (ctype
== NULL_TREE
&& DECL_MAIN_P (decl
))
8830 if (processing_template_decl
)
8831 error ("cannot declare `::main' to be a template");
8833 error ("cannot declare `::main' to be inline");
8835 error ("cannot declare `::main' to be static");
8836 if (!same_type_p (TREE_TYPE (TREE_TYPE (decl
)),
8838 error ("`main' must return `int'");
8843 /* Members of anonymous types and local classes have no linkage; make
8845 /* FIXME what if it gets a name from typedef? */
8846 if (ctype
&& (TYPE_ANONYMOUS_P (ctype
)
8847 || decl_function_context (TYPE_MAIN_DECL (ctype
))))
8852 /* [basic.link]: A name with no linkage (notably, the name of a class
8853 or enumeration declared in a local scope) shall not be used to
8854 declare an entity with linkage.
8856 Only check this for public decls for now. */
8857 t
= no_linkage_check (TREE_TYPE (decl
));
8860 if (TYPE_ANONYMOUS_P (t
))
8862 if (DECL_EXTERN_C_P (decl
))
8863 /* Allow this; it's pretty common in C. */;
8866 cp_pedwarn ("non-local function `%#D' uses anonymous type",
8868 if (DECL_ORIGINAL_TYPE (TYPE_NAME (t
)))
8870 `%#D' does not refer to the unqualified type, so it is not used for linkage",
8875 cp_pedwarn ("non-local function `%#D' uses local type `%T'",
8880 TREE_PUBLIC (decl
) = publicp
;
8883 DECL_INTERFACE_KNOWN (decl
) = 1;
8884 DECL_NOT_REALLY_EXTERN (decl
) = 1;
8887 /* If the declaration was declared inline, mark it as such. */
8889 DECL_DECLARED_INLINE_P (decl
) = 1;
8890 /* We inline functions that are explicitly declared inline, or, when
8891 the user explicitly asks us to, all functions. */
8892 if (DECL_DECLARED_INLINE_P (decl
) || flag_inline_trees
== 2)
8893 DECL_INLINE (decl
) = 1;
8895 DECL_EXTERNAL (decl
) = 1;
8896 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
8898 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
8899 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
8903 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
8904 grok_op_properties (decl
, virtualp
, check
< 0);
8906 if (ctype
&& decl_function_context (decl
))
8907 DECL_NO_STATIC_CHAIN (decl
) = 1;
8909 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
8910 if (TREE_PURPOSE (t
)
8911 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
8913 has_default_arg
= 1;
8918 && TREE_CODE (orig_declarator
) == TEMPLATE_ID_EXPR
)
8922 ("defining explicit specialization `%D' in friend declaration",
8926 tree fns
= TREE_OPERAND (orig_declarator
, 0);
8927 tree args
= TREE_OPERAND (orig_declarator
, 1);
8929 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
8931 /* Something like `template <class T> friend void f<T>()'. */
8932 cp_error ("invalid use of template-id `%D' in declaration of primary template",
8938 /* A friend declaration of the form friend void f<>(). Record
8939 the information in the TEMPLATE_ID_EXPR. */
8940 SET_DECL_IMPLICIT_INSTANTIATION (decl
);
8942 if (TREE_CODE (fns
) == COMPONENT_REF
)
8944 /* Due to bison parser ickiness, we will have already looked
8945 up an operator_name or PFUNCNAME within the current class
8946 (see template_id in parse.y). If the current class contains
8947 such a name, we'll get a COMPONENT_REF here. Undo that. */
8949 my_friendly_assert (TREE_TYPE (TREE_OPERAND (fns
, 0))
8950 == current_class_type
, 20001120);
8951 fns
= TREE_OPERAND (fns
, 1);
8953 my_friendly_assert (TREE_CODE (fns
) == IDENTIFIER_NODE
8954 || TREE_CODE (fns
) == LOOKUP_EXPR
8955 || TREE_CODE (fns
) == OVERLOAD
, 20001120);
8956 DECL_TEMPLATE_INFO (decl
) = tree_cons (fns
, args
, NULL_TREE
);
8958 if (has_default_arg
)
8960 cp_error ("default arguments are not allowed in declaration of friend template specialization `%D'",
8967 cp_error ("`inline' is not allowed in declaration of friend template specialization `%D'",
8974 if (has_default_arg
)
8975 add_defarg_fn (decl
);
8978 /* Make the init_value nonzero so pushdecl knows this is not
8979 tentative. error_mark_node is replaced later with the BLOCK. */
8980 DECL_INITIAL (decl
) = error_mark_node
;
8982 if (TYPE_NOTHROW_P (type
) || nothrow_libfn_p (decl
))
8983 TREE_NOTHROW (decl
) = 1;
8985 /* Caller will do the rest of this. */
8989 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (ctype
) == declarator
)
8990 DECL_CONSTRUCTOR_P (decl
) = 1;
8992 /* Function gets the ugly name, field gets the nice one. This call
8993 may change the type of the function (because of default
8995 if (ctype
!= NULL_TREE
)
8996 grokclassfn (ctype
, decl
, flags
, quals
);
8998 decl
= check_explicit_specialization (orig_declarator
, decl
,
9000 2 * (funcdef_flag
!= 0) +
9001 4 * (friendp
!= 0));
9002 if (decl
== error_mark_node
)
9005 if (ctype
!= NULL_TREE
9006 && (! TYPE_FOR_JAVA (ctype
) || check_java_method (decl
))
9011 old_decl
= check_classfn (ctype
, decl
);
9013 if (old_decl
&& TREE_CODE (old_decl
) == TEMPLATE_DECL
)
9014 /* Because grokfndecl is always supposed to return a
9015 FUNCTION_DECL, we pull out the DECL_TEMPLATE_RESULT
9016 here. We depend on our callers to figure out that its
9017 really a template that's being returned. */
9018 old_decl
= DECL_TEMPLATE_RESULT (old_decl
);
9020 if (old_decl
&& DECL_STATIC_FUNCTION_P (old_decl
)
9021 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
9023 /* Remove the `this' parm added by grokclassfn.
9024 XXX Isn't this done in start_function, too? */
9025 revert_static_member_fn (decl
);
9026 last_function_parms
= TREE_CHAIN (last_function_parms
);
9028 if (old_decl
&& DECL_ARTIFICIAL (old_decl
))
9029 cp_error ("definition of implicitly-declared `%D'", old_decl
);
9033 /* Since we've smashed OLD_DECL to its
9034 DECL_TEMPLATE_RESULT, we must do the same to DECL. */
9035 if (TREE_CODE (decl
) == TEMPLATE_DECL
)
9036 decl
= DECL_TEMPLATE_RESULT (decl
);
9038 /* Attempt to merge the declarations. This can fail, in
9039 the case of some illegal specialization declarations. */
9040 if (!duplicate_decls (decl
, old_decl
))
9041 cp_error ("no `%#D' member function declared in class `%T'",
9047 if (DECL_CONSTRUCTOR_P (decl
) && !grok_ctor_properties (ctype
, decl
))
9050 if (ctype
== NULL_TREE
|| check
)
9054 DECL_VIRTUAL_P (decl
) = 1;
9060 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
, in_namespace
)
9063 RID_BIT_TYPE
*specbits_in
;
9069 RID_BIT_TYPE specbits
;
9071 specbits
= *specbits_in
;
9073 if (TREE_CODE (type
) == OFFSET_TYPE
)
9075 /* If you declare a static member so that it
9076 can be initialized, the code will reach here. */
9077 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
9078 type
= TREE_TYPE (type
);
9079 decl
= build_lang_decl (VAR_DECL
, declarator
, type
);
9080 DECL_CONTEXT (decl
) = basetype
;
9087 context
= in_namespace
;
9088 else if (namespace_bindings_p () || RIDBIT_SETP (RID_EXTERN
, specbits
))
9089 context
= current_namespace
;
9091 context
= NULL_TREE
;
9093 /* For namespace-scope variables, declared in a template, we
9094 need the full lang_decl. The same is true for
9095 namespace-scope variables that do not have C++ language
9098 && (processing_template_decl
9099 || current_lang_name
!= lang_name_cplusplus
))
9100 decl
= build_lang_decl (VAR_DECL
, declarator
, type
);
9102 decl
= build_decl (VAR_DECL
, declarator
, type
);
9105 set_decl_namespace (decl
, context
, 0);
9107 context
= DECL_CONTEXT (decl
);
9108 if (declarator
&& context
&& current_lang_name
!= lang_name_c
)
9109 /* We can't mangle lazily here because we don't have any
9110 way to recover whether or not a variable was `extern
9116 set_decl_namespace (decl
, in_namespace
, 0);
9118 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
9120 DECL_THIS_EXTERN (decl
) = 1;
9121 DECL_EXTERNAL (decl
) = !initialized
;
9124 /* In class context, static means one per class,
9125 public access, and static storage. */
9126 if (DECL_CLASS_SCOPE_P (decl
))
9128 TREE_PUBLIC (decl
) = 1;
9129 TREE_STATIC (decl
) = 1;
9130 DECL_EXTERNAL (decl
) = 0;
9132 /* At top level, either `static' or no s.c. makes a definition
9133 (perhaps tentative), and absence of `static' makes it public. */
9134 else if (toplevel_bindings_p ())
9136 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
9137 && (DECL_THIS_EXTERN (decl
) || ! constp
));
9138 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
9140 /* Not at top level, only `static' makes a static definition. */
9143 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
9144 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
9147 if (TREE_PUBLIC (decl
))
9149 /* [basic.link]: A name with no linkage (notably, the name of a class
9150 or enumeration declared in a local scope) shall not be used to
9151 declare an entity with linkage.
9153 Only check this for public decls for now. */
9154 tree t
= no_linkage_check (TREE_TYPE (decl
));
9157 if (TYPE_ANONYMOUS_P (t
))
9158 /* Ignore for now; `enum { foo } e' is pretty common. */;
9160 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
9168 /* Create and return a canonical pointer to member function type, for
9169 TYPE, which is a POINTER_TYPE to a METHOD_TYPE. */
9172 build_ptrmemfunc_type (type
)
9177 tree unqualified_variant
= NULL_TREE
;
9179 if (type
== error_mark_node
)
9182 /* If a canonical type already exists for this type, use it. We use
9183 this method instead of type_hash_canon, because it only does a
9184 simple equality check on the list of field members. */
9186 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
9189 /* Make sure that we always have the unqualified pointer-to-member
9191 if (cp_type_quals (type
) != TYPE_UNQUALIFIED
)
9193 = build_ptrmemfunc_type (TYPE_MAIN_VARIANT (type
));
9195 t
= make_aggr_type (RECORD_TYPE
);
9196 /* Let the front-end know this is a pointer to member function... */
9197 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
9198 /* ... and not really an aggregate. */
9199 SET_IS_AGGR_TYPE (t
, 0);
9201 fields
[0] = build_decl (FIELD_DECL
, pfn_identifier
, type
);
9202 fields
[1] = build_decl (FIELD_DECL
, delta_identifier
,
9204 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
9206 /* Zap out the name so that the back-end will give us the debugging
9207 information for this anonymous RECORD_TYPE. */
9208 TYPE_NAME (t
) = NULL_TREE
;
9210 /* If this is not the unqualified form of this pointer-to-member
9211 type, set the TYPE_MAIN_VARIANT for this type to be the
9212 unqualified type. Since they are actually RECORD_TYPEs that are
9213 not variants of each other, we must do this manually. */
9214 if (cp_type_quals (type
) != TYPE_UNQUALIFIED
)
9216 t
= build_qualified_type (t
, cp_type_quals (type
));
9217 TYPE_MAIN_VARIANT (t
) = unqualified_variant
;
9218 TYPE_NEXT_VARIANT (t
) = TYPE_NEXT_VARIANT (unqualified_variant
);
9219 TYPE_NEXT_VARIANT (unqualified_variant
) = t
;
9222 /* Cache this pointer-to-member type so that we can find it again
9224 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
9226 /* Seems to be wanted. */
9227 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
9232 /* DECL is a VAR_DECL defined in-class, whose TYPE is also given.
9233 Check to see that the definition is valid. Issue appropriate error
9234 messages. Return 1 if the definition is particularly bad, or 0
9238 check_static_variable_definition (decl
, type
)
9242 /* Motion 10 at San Diego: If a static const integral data member is
9243 initialized with an integral constant expression, the initializer
9244 may appear either in the declaration (within the class), or in
9245 the definition, but not both. If it appears in the class, the
9246 member is a member constant. The file-scope definition is always
9248 if (CLASS_TYPE_P (type
) || TREE_CODE (type
) == REFERENCE_TYPE
)
9250 cp_error ("invalid in-class initialization of static data member of non-integral type `%T'",
9252 /* If we just return the declaration, crashes will sometimes
9253 occur. We therefore return void_type_node, as if this was a
9254 friend declaration, to cause callers to completely ignore
9255 this declaration. */
9258 else if (!CP_TYPE_CONST_P (type
))
9259 cp_error ("ISO C++ forbids in-class initialization of non-const static member `%D'",
9261 else if (pedantic
&& !INTEGRAL_TYPE_P (type
))
9262 cp_pedwarn ("ISO C++ forbids initialization of member constant `%D' of non-integral type `%T'", decl
, type
);
9267 /* Given the SIZE (i.e., number of elements) in an array, compute an
9268 appropriate index type for the array. If non-NULL, NAME is the
9269 name of the thing being declared. */
9272 compute_array_index_type (name
, size
)
9278 /* If this involves a template parameter, it will be a constant at
9279 instantiation time, but we don't know what the value is yet.
9280 Even if no template parameters are involved, we may an expression
9281 that is not a constant; we don't even simplify `1 + 2' when
9282 processing a template. */
9283 if (processing_template_decl
)
9285 /* Resolve a qualified reference to an enumerator or static
9286 const data member of ours. */
9287 if (TREE_CODE (size
) == SCOPE_REF
9288 && TREE_OPERAND (size
, 0) == current_class_type
)
9290 tree t
= lookup_field (current_class_type
,
9291 TREE_OPERAND (size
, 1), 0, 0);
9296 return build_index_type (build_min (MINUS_EXPR
, sizetype
,
9297 size
, integer_one_node
));
9300 /* The size might be the result of a cast. */
9301 STRIP_TYPE_NOPS (size
);
9303 /* It might be a const variable or enumeration constant. */
9304 size
= decl_constant_value (size
);
9306 /* The array bound must be an integer type. */
9307 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
9308 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
9309 && TREE_CODE (TREE_TYPE (size
)) != BOOLEAN_TYPE
)
9312 cp_error ("size of array `%D' has non-integer type", name
);
9314 cp_error ("size of array has non-integer type");
9315 size
= integer_one_node
;
9318 /* Normally, the array-bound will be a constant. */
9319 if (TREE_CODE (size
) == INTEGER_CST
)
9321 /* Check to see if the array bound overflowed. Make that an
9322 error, no matter how generous we're being. */
9323 int old_flag_pedantic_errors
= flag_pedantic_errors
;
9324 int old_pedantic
= pedantic
;
9325 pedantic
= flag_pedantic_errors
= 1;
9326 constant_expression_warning (size
);
9327 pedantic
= old_pedantic
;
9328 flag_pedantic_errors
= old_flag_pedantic_errors
;
9330 /* An array must have a positive number of elements. */
9331 if (INT_CST_LT (size
, integer_zero_node
))
9334 cp_error ("size of array `%D' is negative", name
);
9336 cp_error ("size of array is negative");
9337 size
= integer_one_node
;
9339 /* Except that an extension we allow zero-sized arrays. We
9340 always allow them in system headers because glibc uses
9342 else if (integer_zerop (size
) && pedantic
&& !in_system_header
)
9345 cp_pedwarn ("ISO C++ forbids zero-size array `%D'", name
);
9347 cp_pedwarn ("ISO C++ forbids zero-size array");
9350 else if (TREE_CONSTANT (size
))
9352 /* `(int) &fn' is not a valid array bound. */
9354 cp_error ("size of array `%D' is not an integral constant-expression",
9357 cp_error ("size of array is not an integral constant-expression");
9360 /* Compute the index of the largest element in the array. It is
9361 one less than the number of elements in the array. */
9363 = fold (cp_build_binary_op (MINUS_EXPR
,
9364 cp_convert (ssizetype
, size
),
9365 cp_convert (ssizetype
,
9366 integer_one_node
)));
9368 /* Check for variable-sized arrays. We allow such things as an
9369 extension, even though they are not allowed in ANSI/ISO C++. */
9370 if (!TREE_CONSTANT (itype
))
9375 cp_pedwarn ("ISO C++ forbids variable-size array `%D'",
9378 cp_pedwarn ("ISO C++ forbids variable-size array");
9381 /* Create a variable-sized array index type. */
9382 itype
= variable_size (itype
);
9384 /* Make sure that there was no overflow when creating to a signed
9385 index type. (For example, on a 32-bit machine, an array with
9386 size 2^32 - 1 is too big.) */
9387 else if (TREE_OVERFLOW (itype
))
9389 error ("overflow in array dimension");
9390 TREE_OVERFLOW (itype
) = 0;
9393 /* Create and return the appropriate index type. */
9394 return build_index_type (itype
);
9397 /* Returns an ARRAY_TYPE for an array with SIZE elements of the
9398 indicated TYPE. If non-NULL, NAME is the NAME of the declaration
9402 create_array_type_for_decl (name
, type
, size
)
9407 tree itype
= NULL_TREE
;
9408 const char* error_msg
;
9410 /* If things have already gone awry, bail now. */
9411 if (type
== error_mark_node
|| size
== error_mark_node
)
9412 return error_mark_node
;
9414 /* Assume that everything will go OK. */
9417 /* There are some types which cannot be array elements. */
9418 switch (TREE_CODE (type
))
9421 error_msg
= "array of void";
9425 error_msg
= "array of functions";
9428 case REFERENCE_TYPE
:
9429 error_msg
= "array of references";
9433 error_msg
= "array of data members";
9437 error_msg
= "array of function members";
9444 /* If something went wrong, issue an error-message and return. */
9448 cp_error ("declaration of `%D' as %s", name
, error_msg
);
9450 cp_error ("creating %s", error_msg
);
9452 return error_mark_node
;
9457 The constant expressions that specify the bounds of the arrays
9458 can be omitted only for the first member of the sequence. */
9459 if (TREE_CODE (type
) == ARRAY_TYPE
&& !TYPE_DOMAIN (type
))
9462 cp_error ("declaration of `%D' as multidimensional array must have bounds for all dimensions except the first",
9465 cp_error ("multidimensional array must have bounds for all dimensions except the first");
9467 return error_mark_node
;
9470 /* Figure out the index type for the array. */
9472 itype
= compute_array_index_type (name
, size
);
9474 return build_cplus_array_type (type
, itype
);
9477 /* Check that it's OK to declare a function with the indicated TYPE.
9478 SFK indicates the kind of special function (if any) that this
9479 function is. OPTYPE is the type given in a conversion operator
9480 declaration. Returns the actual return type of the function; that
9481 may be different than TYPE if an error occurs, or for certain
9482 special functions. */
9485 check_special_function_return_type (sfk
, type
, optype
)
9486 special_function_kind sfk
;
9492 case sfk_constructor
:
9494 cp_error ("return type specification for constructor invalid");
9496 type
= void_type_node
;
9499 case sfk_destructor
:
9501 cp_error ("return type specification for destructor invalid");
9502 type
= void_type_node
;
9505 case sfk_conversion
:
9506 if (type
&& !same_type_p (type
, optype
))
9507 cp_error ("operator `%T' declared to return `%T'", optype
, type
);
9509 cp_pedwarn ("return type specified for `operator %T'", optype
);
9514 my_friendly_abort (20000408);
9521 /* Given declspecs and a declarator,
9522 determine the name and type of the object declared
9523 and construct a ..._DECL node for it.
9524 (In one case we can return a ..._TYPE node instead.
9525 For invalid input we sometimes return 0.)
9527 DECLSPECS is a chain of tree_list nodes whose value fields
9528 are the storage classes and type specifiers.
9530 DECL_CONTEXT says which syntactic context this declaration is in:
9531 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
9532 FUNCDEF for a function definition. Like NORMAL but a few different
9533 error messages in each case. Return value may be zero meaning
9534 this definition is too screwy to try to parse.
9535 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
9536 handle member functions (which have FIELD context).
9537 Return value may be zero meaning this definition is too screwy to
9539 PARM for a parameter declaration (either within a function prototype
9540 or before a function body). Make a PARM_DECL, or return void_type_node.
9541 CATCHPARM for a parameter declaration before a catch clause.
9542 TYPENAME if for a typename (in a cast or sizeof).
9543 Don't make a DECL node; just return the ..._TYPE node.
9544 FIELD for a struct or union field; make a FIELD_DECL.
9545 BITFIELD for a field with specified width.
9546 INITIALIZED is 1 if the decl has an initializer.
9548 ATTRLIST is a pointer to the list of attributes, which may be NULL
9549 if there are none; *ATTRLIST may be modified if attributes from inside
9550 the declarator should be applied to the declaration.
9552 In the TYPENAME case, DECLARATOR is really an abstract declarator.
9553 It may also be so in the PARM case, for a prototype where the
9554 argument type is specified but not the name.
9556 This function is where the complicated C meanings of `static'
9557 and `extern' are interpreted.
9559 For C++, if there is any monkey business to do, the function which
9560 calls this one must do it, i.e., prepending instance variables,
9561 renaming overloaded function names, etc.
9563 Note that for this C++, it is an error to define a method within a class
9564 which does not belong to that class.
9566 Except in the case where SCOPE_REFs are implicitly known (such as
9567 methods within a class being redundantly qualified),
9568 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
9569 (class_name::decl_name). The caller must also deal with this.
9571 If a constructor or destructor is seen, and the context is FIELD,
9572 then the type gains the attribute TREE_HAS_x. If such a declaration
9573 is erroneous, NULL_TREE is returned.
9575 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
9576 function, these are the qualifiers to give to the `this' pointer. We
9577 apply TYPE_QUAL_RESTRICT to the this ptr, not the object.
9579 May return void_type_node if the declarator turned out to be a friend.
9580 See grokfield for details. */
9583 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
9586 enum decl_context decl_context
;
9590 RID_BIT_TYPE specbits
;
9593 tree type
= NULL_TREE
;
9599 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
9600 int explicit_int
= 0;
9601 int explicit_char
= 0;
9602 int defaulted_int
= 0;
9603 tree typedef_decl
= NULL_TREE
;
9605 tree typedef_type
= NULL_TREE
;
9606 int funcdef_flag
= 0;
9607 enum tree_code innermost_code
= ERROR_MARK
;
9610 /* See the code below that used this. */
9611 tree decl_attr
= NULL_TREE
;
9613 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
9614 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
9615 tree init
= NULL_TREE
;
9617 /* Keep track of what sort of function is being processed
9618 so that we can warn about default return values, or explicit
9619 return values which do not match prescribed defaults. */
9620 special_function_kind sfk
= sfk_none
;
9622 tree dname
= NULL_TREE
;
9623 tree ctype
= current_class_type
;
9624 tree ctor_return_type
= NULL_TREE
;
9625 enum overload_flags flags
= NO_SPECIAL
;
9626 tree quals
= NULL_TREE
;
9627 tree raises
= NULL_TREE
;
9628 int template_count
= 0;
9629 tree in_namespace
= NULL_TREE
;
9630 tree returned_attrs
= NULL_TREE
;
9632 RIDBIT_RESET_ALL (specbits
);
9633 if (decl_context
== FUNCDEF
)
9634 funcdef_flag
= 1, decl_context
= NORMAL
;
9635 else if (decl_context
== MEMFUNCDEF
)
9636 funcdef_flag
= -1, decl_context
= FIELD
;
9637 else if (decl_context
== BITFIELD
)
9638 bitfield
= 1, decl_context
= FIELD
;
9640 /* Look inside a declarator for the name being declared
9641 and get it as a string, for an error message. */
9643 tree
*next
= &declarator
;
9647 while (next
&& *next
)
9650 switch (TREE_CODE (decl
))
9653 /* For attributes. */
9654 next
= &TREE_VALUE (decl
);
9659 next
= &TREE_OPERAND (decl
, 0);
9662 case BIT_NOT_EXPR
: /* For C++ destructors! */
9664 tree name
= TREE_OPERAND (decl
, 0);
9665 tree rename
= NULL_TREE
;
9667 my_friendly_assert (flags
== NO_SPECIAL
, 152);
9669 sfk
= sfk_destructor
;
9670 if (TREE_CODE (name
) == TYPE_DECL
)
9671 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
9672 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
9673 if (ctype
== NULL_TREE
)
9675 if (current_class_type
== NULL_TREE
)
9677 error ("destructors must be member functions");
9682 tree t
= constructor_name (current_class_name
);
9689 tree t
= constructor_name (ctype
);
9696 cp_error ("destructor `%T' must match class name `%T'",
9698 TREE_OPERAND (decl
, 0) = rename
;
9704 case ADDR_EXPR
: /* C++ reference declaration */
9709 innermost_code
= TREE_CODE (decl
);
9710 next
= &TREE_OPERAND (decl
, 0);
9714 if (parmlist_is_exprlist (CALL_DECLARATOR_PARMS (decl
)))
9716 /* This is actually a variable declaration using
9717 constructor syntax. We need to call start_decl and
9718 cp_finish_decl so we can get the variable
9723 *next
= TREE_OPERAND (decl
, 0);
9724 init
= CALL_DECLARATOR_PARMS (decl
);
9728 attributes
= *attrlist
;
9732 attributes
= NULL_TREE
;
9735 decl
= start_decl (declarator
, declspecs
, 1,
9736 attributes
, NULL_TREE
);
9737 decl_type_access_control (decl
);
9740 /* Look for __unused__ attribute */
9741 if (TREE_USED (TREE_TYPE (decl
)))
9742 TREE_USED (decl
) = 1;
9743 finish_decl (decl
, init
, NULL_TREE
);
9746 cp_error ("invalid declarator");
9749 innermost_code
= TREE_CODE (decl
);
9750 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
9751 ctype
= current_class_type
;
9753 && TREE_OPERAND (decl
, 0)
9754 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
9755 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
9756 == constructor_name_full (ctype
))
9757 || (DECL_NAME (TREE_OPERAND (decl
, 0))
9758 == constructor_name (ctype
)))))
9759 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
9760 next
= &TREE_OPERAND (decl
, 0);
9762 if (ctype
!= NULL_TREE
9763 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
9764 && decl
== constructor_name (ctype
))
9766 sfk
= sfk_constructor
;
9767 ctor_return_type
= ctype
;
9772 case TEMPLATE_ID_EXPR
:
9774 tree fns
= TREE_OPERAND (decl
, 0);
9776 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
9777 fns
= TREE_OPERAND (fns
, 0);
9780 if (TREE_CODE (dname
) == COMPONENT_REF
)
9781 dname
= TREE_OPERAND (dname
, 1);
9782 if (TREE_CODE (dname
) != IDENTIFIER_NODE
)
9784 my_friendly_assert (is_overloaded_fn (dname
),
9786 dname
= DECL_NAME (get_first_fn (dname
));
9791 case IDENTIFIER_NODE
:
9792 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
9797 if (C_IS_RESERVED_WORD (dname
))
9799 cp_error ("declarator-id missing; using reserved word `%D'",
9801 name
= IDENTIFIER_POINTER (dname
);
9803 else if (!IDENTIFIER_TYPENAME_P (dname
))
9804 name
= IDENTIFIER_POINTER (dname
);
9807 my_friendly_assert (flags
== NO_SPECIAL
, 154);
9808 flags
= TYPENAME_FLAG
;
9809 ctor_return_type
= TREE_TYPE (dname
);
9810 sfk
= sfk_conversion
;
9811 if (IDENTIFIER_GLOBAL_VALUE (dname
)
9812 && (TREE_CODE (IDENTIFIER_GLOBAL_VALUE (dname
))
9814 name
= IDENTIFIER_POINTER (dname
);
9816 name
= "<invalid operator>";
9823 /* Perform error checking, and decide on a ctype. */
9824 tree cname
= TREE_OPERAND (decl
, 0);
9825 if (cname
== NULL_TREE
)
9827 else if (TREE_CODE (cname
) == NAMESPACE_DECL
)
9830 in_namespace
= TREE_OPERAND (decl
, 0);
9831 TREE_OPERAND (decl
, 0) = NULL_TREE
;
9833 else if (! is_aggr_type (cname
, 1))
9834 TREE_OPERAND (decl
, 0) = NULL_TREE
;
9835 /* Must test TREE_OPERAND (decl, 1), in case user gives
9836 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
9837 else if (TREE_OPERAND (decl
, 1)
9838 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
9840 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
9841 || TREE_CODE (cname
) == BOUND_TEMPLATE_TEMPLATE_PARM
)
9843 cp_error ("`%T::%D' is not a valid declarator", cname
,
9844 TREE_OPERAND (decl
, 1));
9845 cp_error (" perhaps you want `typename %T::%D' to make it a type",
9846 cname
, TREE_OPERAND (decl
, 1));
9847 return void_type_node
;
9849 else if (ctype
== NULL_TREE
)
9851 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
9852 TREE_OPERAND (decl
, 0) = ctype
;
9855 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
9857 cp_error ("type `%T' is not derived from type `%T'",
9859 TREE_OPERAND (decl
, 0) = NULL_TREE
;
9865 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
9866 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
9867 == constructor_name_full (ctype
))
9868 || (DECL_NAME (TREE_OPERAND (decl
, 1))
9869 == constructor_name (ctype
))))
9870 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
9871 next
= &TREE_OPERAND (decl
, 1);
9875 if (TREE_CODE (decl
) == IDENTIFIER_NODE
9876 && constructor_name (ctype
) == decl
)
9878 sfk
= sfk_constructor
;
9879 ctor_return_type
= ctype
;
9881 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
9882 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
9883 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
9884 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
9886 sfk
= sfk_destructor
;
9887 ctor_return_type
= ctype
;
9889 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
9890 next
= &TREE_OPERAND (decl
, 0);
9901 /* Parse error puts this typespec where
9902 a declarator should go. */
9903 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
9904 if (TREE_TYPE (decl
) == current_class_type
)
9905 cp_error (" perhaps you want `%T' for a constructor",
9906 current_class_name
);
9907 dname
= DECL_NAME (decl
);
9908 name
= IDENTIFIER_POINTER (dname
);
9910 /* Avoid giving two errors for this. */
9911 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
9913 declspecs
= tree_cons (NULL_TREE
, integer_type_node
, declspecs
);
9919 cp_compiler_error ("`%D' as declarator", decl
);
9920 return 0; /* We used to do a 155 abort here. */
9925 /* A function definition's declarator must have the form of
9926 a function declarator. */
9928 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
9931 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
9932 && innermost_code
!= CALL_EXPR
9933 && ! (ctype
&& declspecs
== NULL_TREE
))
9935 cp_error ("declaration of `%D' as non-function", dname
);
9936 return void_type_node
;
9939 /* Anything declared one level down from the top level
9940 must be one of the parameters of a function
9941 (because the body is at least two levels down). */
9943 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
9944 by not allowing C++ class definitions to specify their parameters
9945 with xdecls (must be spec.d in the parmlist).
9947 Since we now wait to push a class scope until we are sure that
9948 we are in a legitimate method context, we must set oldcname
9949 explicitly (since current_class_name is not yet alive).
9951 We also want to avoid calling this a PARM if it is in a namespace. */
9953 if (decl_context
== NORMAL
&& !toplevel_bindings_p ())
9955 struct binding_level
*b
= current_binding_level
;
9956 current_binding_level
= b
->level_chain
;
9957 if (current_binding_level
!= 0 && toplevel_bindings_p ())
9958 decl_context
= PARM
;
9959 current_binding_level
= b
;
9963 name
= decl_context
== PARM
? "parameter" : "type name";
9965 /* Look through the decl specs and record which ones appear.
9966 Some typespecs are defined as built-in typenames.
9967 Others, the ones that are modifiers of other types,
9968 are represented by bits in SPECBITS: set the bits for
9969 the modifiers that appear. Storage class keywords are also in SPECBITS.
9971 If there is a typedef name or a type, store the type in TYPE.
9972 This includes builtin typedefs such as `int'.
9974 Set EXPLICIT_INT if the type is `int' or `char' and did not
9975 come from a user typedef.
9977 Set LONGLONG if `long' is mentioned twice.
9979 For C++, constructors and destructors have their own fast treatment. */
9981 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
9986 /* Certain parse errors slip through. For example,
9987 `int class;' is not caught by the parser. Try
9988 weakly to recover here. */
9989 if (TREE_CODE (spec
) != TREE_LIST
)
9992 id
= TREE_VALUE (spec
);
9994 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
9996 if (id
== ridpointers
[(int) RID_INT
]
9997 || id
== ridpointers
[(int) RID_CHAR
]
9998 || id
== ridpointers
[(int) RID_BOOL
]
9999 || id
== ridpointers
[(int) RID_WCHAR
])
10003 if (id
== ridpointers
[(int) RID_BOOL
])
10004 error ("`bool' is now a keyword");
10006 cp_error ("extraneous `%T' ignored", id
);
10010 if (id
== ridpointers
[(int) RID_INT
])
10012 else if (id
== ridpointers
[(int) RID_CHAR
])
10014 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
10018 /* C++ aggregate types. */
10019 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
10022 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
10024 type
= IDENTIFIER_TYPE_VALUE (id
);
10028 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
10030 if (ridpointers
[i
] == id
)
10032 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
10034 if (pedantic
&& ! in_system_header
&& warn_long_long
)
10035 pedwarn ("ISO C++ does not support `long long'");
10037 error ("`long long long' is too long for GCC");
10041 else if (RIDBIT_SETP (i
, specbits
))
10042 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
10043 RIDBIT_SET (i
, specbits
);
10048 /* C++ aggregate types. */
10049 else if (TREE_CODE (id
) == TYPE_DECL
)
10052 cp_error ("multiple declarations `%T' and `%T'", type
,
10056 type
= TREE_TYPE (id
);
10057 TREE_VALUE (spec
) = type
;
10062 error ("two or more data types in declaration of `%s'", name
);
10063 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
10065 register tree t
= lookup_name (id
, 1);
10066 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
10067 error ("`%s' fails to be a typedef or built in type",
10068 IDENTIFIER_POINTER (id
));
10071 type
= TREE_TYPE (t
);
10073 /* See the code below that used this. */
10074 decl_attr
= DECL_ATTRIBUTES (id
);
10079 else if (id
!= error_mark_node
)
10080 /* Can't change CLASS nodes into RECORD nodes here! */
10086 typedef_type
= type
;
10088 /* No type at all: default to `int', and set DEFAULTED_INT
10089 because it was not a user-defined typedef. */
10091 if (type
== NULL_TREE
10092 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
10093 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
10094 || RIDBIT_SETP (RID_LONG
, specbits
)
10095 || RIDBIT_SETP (RID_SHORT
, specbits
)))
10097 /* These imply 'int'. */
10098 type
= integer_type_node
;
10102 if (sfk
!= sfk_none
)
10103 type
= check_special_function_return_type (sfk
, type
,
10105 else if (type
== NULL_TREE
)
10111 /* We handle `main' specially here, because 'main () { }' is so
10112 common. With no options, it is allowed. With -Wreturn-type,
10113 it is a warning. It is only an error with -pedantic-errors. */
10114 is_main
= (funcdef_flag
10115 && MAIN_NAME_P (dname
)
10116 && ctype
== NULL_TREE
10117 && in_namespace
== NULL_TREE
10118 && current_namespace
== global_namespace
);
10120 if (in_system_header
|| flag_ms_extensions
)
10121 /* Allow it, sigh. */;
10122 else if (pedantic
|| ! is_main
)
10123 cp_pedwarn ("ISO C++ forbids declaration of `%s' with no type",
10125 else if (warn_return_type
)
10126 cp_warning ("ISO C++ forbids declaration of `%s' with no type",
10129 type
= integer_type_node
;
10134 /* Now process the modifiers that were specified
10135 and check for invalid combinations. */
10137 /* Long double is a special combination. */
10139 if (RIDBIT_SETP (RID_LONG
, specbits
)
10140 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
10142 RIDBIT_RESET (RID_LONG
, specbits
);
10143 type
= build_qualified_type (long_double_type_node
,
10144 cp_type_quals (type
));
10147 /* Check all other uses of type modifiers. */
10149 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
10150 || RIDBIT_SETP (RID_SIGNED
, specbits
)
10151 || RIDBIT_SETP (RID_LONG
, specbits
)
10152 || RIDBIT_SETP (RID_SHORT
, specbits
))
10156 if (TREE_CODE (type
) == REAL_TYPE
)
10157 error ("short, signed or unsigned invalid for `%s'", name
);
10158 else if (TREE_CODE (type
) != INTEGER_TYPE
)
10159 error ("long, short, signed or unsigned invalid for `%s'", name
);
10160 else if (RIDBIT_SETP (RID_LONG
, specbits
)
10161 && RIDBIT_SETP (RID_SHORT
, specbits
))
10162 error ("long and short specified together for `%s'", name
);
10163 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
10164 || RIDBIT_SETP (RID_SHORT
, specbits
))
10166 error ("long or short specified with char for `%s'", name
);
10167 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
10168 || RIDBIT_SETP (RID_SHORT
, specbits
))
10169 && TREE_CODE (type
) == REAL_TYPE
)
10170 error ("long or short specified with floating type for `%s'", name
);
10171 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10172 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
10173 error ("signed and unsigned given together for `%s'", name
);
10177 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
10179 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
10181 if (flag_pedantic_errors
)
10186 /* Discard the type modifiers if they are invalid. */
10189 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
10190 RIDBIT_RESET (RID_SIGNED
, specbits
);
10191 RIDBIT_RESET (RID_LONG
, specbits
);
10192 RIDBIT_RESET (RID_SHORT
, specbits
);
10197 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
10198 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
10200 error ("complex invalid for `%s'", name
);
10201 RIDBIT_RESET (RID_COMPLEX
, specbits
);
10204 /* Decide whether an integer type is signed or not.
10205 Optionally treat bitfields as signed by default. */
10206 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
10209 It is implementation-defined whether a plain (neither
10210 explicitly signed or unsigned) char, short, int, or long
10211 bit-field is signed or unsigned.
10213 Naturally, we extend this to long long as well. Note that
10214 this does not include wchar_t. */
10215 || (bitfield
&& !flag_signed_bitfields
10216 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)
10217 /* A typedef for plain `int' without `signed' can be
10218 controlled just like plain `int', but a typedef for
10219 `signed int' cannot be so controlled. */
10221 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
))
10222 && (TREE_CODE (type
) == INTEGER_TYPE
10223 || TREE_CODE (type
) == CHAR_TYPE
)
10224 && !same_type_p (TYPE_MAIN_VARIANT (type
), wchar_type_node
)))
10227 type
= long_long_unsigned_type_node
;
10228 else if (RIDBIT_SETP (RID_LONG
, specbits
))
10229 type
= long_unsigned_type_node
;
10230 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
10231 type
= short_unsigned_type_node
;
10232 else if (type
== char_type_node
)
10233 type
= unsigned_char_type_node
;
10234 else if (typedef_decl
)
10235 type
= unsigned_type (type
);
10237 type
= unsigned_type_node
;
10239 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
10240 && type
== char_type_node
)
10241 type
= signed_char_type_node
;
10243 type
= long_long_integer_type_node
;
10244 else if (RIDBIT_SETP (RID_LONG
, specbits
))
10245 type
= long_integer_type_node
;
10246 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
10247 type
= short_integer_type_node
;
10249 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
10251 /* If we just have "complex", it is equivalent to
10252 "complex double", but if any modifiers at all are specified it is
10253 the complex form of TYPE. E.g, "complex short" is
10254 "complex short int". */
10256 if (defaulted_int
&& ! longlong
10257 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
10258 || RIDBIT_SETP (RID_SHORT
, specbits
)
10259 || RIDBIT_SETP (RID_SIGNED
, specbits
)
10260 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
10261 type
= complex_double_type_node
;
10262 else if (type
== integer_type_node
)
10263 type
= complex_integer_type_node
;
10264 else if (type
== float_type_node
)
10265 type
= complex_float_type_node
;
10266 else if (type
== double_type_node
)
10267 type
= complex_double_type_node
;
10268 else if (type
== long_double_type_node
)
10269 type
= complex_long_double_type_node
;
10271 type
= build_complex_type (type
);
10274 if (sfk
== sfk_conversion
10275 && (RIDBIT_SETP (RID_CONST
, specbits
)
10276 || RIDBIT_SETP (RID_VOLATILE
, specbits
)
10277 || RIDBIT_SETP (RID_RESTRICT
, specbits
)))
10278 cp_error ("qualifiers are not allowed on declaration of `operator %T'",
10281 /* Set CONSTP if this declaration is `const', whether by
10282 explicit specification or via a typedef.
10283 Likewise for VOLATILEP. */
10285 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + CP_TYPE_CONST_P (type
);
10287 !! RIDBIT_SETP (RID_RESTRICT
, specbits
) + CP_TYPE_RESTRICT_P (type
);
10289 !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + CP_TYPE_VOLATILE_P (type
);
10290 type_quals
= ((constp
? TYPE_QUAL_CONST
: 0)
10291 | (restrictp
? TYPE_QUAL_RESTRICT
: 0)
10292 | (volatilep
? TYPE_QUAL_VOLATILE
: 0));
10293 type
= cp_build_qualified_type (type
, type_quals
);
10295 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
10296 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
10297 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
10298 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
10299 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
10301 if (RIDBIT_SETP (RID_STATIC
, specbits
))
10302 staticp
= 1 + (decl_context
== FIELD
);
10304 if (virtualp
&& staticp
== 2)
10306 cp_error ("member `%D' cannot be declared both virtual and static",
10310 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
10311 RIDBIT_RESET (RID_FRIEND
, specbits
);
10313 /* Warn if two storage classes are given. Default to `auto'. */
10315 if (RIDBIT_ANY_SET (specbits
))
10317 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
10318 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
10319 if (decl_context
== PARM
&& nclasses
> 0)
10320 error ("storage class specifiers invalid in parameter declarations");
10321 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
10323 if (decl_context
== PARM
)
10324 error ("typedef declaration invalid in parameter declaration");
10327 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
10328 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
10331 /* Give error if `virtual' is used outside of class declaration. */
10333 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
10335 error ("virtual outside class declaration");
10339 /* Static anonymous unions are dealt with here. */
10340 if (staticp
&& decl_context
== TYPENAME
10341 && TREE_CODE (declspecs
) == TREE_LIST
10342 && ANON_AGGR_TYPE_P (TREE_VALUE (declspecs
)))
10343 decl_context
= FIELD
;
10345 /* Warn about storage classes that are invalid for certain
10346 kinds of declarations (parameters, typenames, etc.). */
10349 error ("multiple storage classes in declaration of `%s'", name
);
10350 else if (decl_context
!= NORMAL
&& nclasses
> 0)
10352 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
10353 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
10354 || RIDBIT_SETP (RID_AUTO
, specbits
)))
10356 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
10358 else if (decl_context
== FIELD
10359 /* C++ allows static class elements */
10360 && RIDBIT_SETP (RID_STATIC
, specbits
))
10361 /* C++ also allows inlines and signed and unsigned elements,
10362 but in those cases we don't come in here. */
10366 if (decl_context
== FIELD
)
10368 tree tmp
= NULL_TREE
;
10369 register int op
= 0;
10373 /* Avoid trying to get an operand off an identifier node. */
10374 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
10377 tmp
= TREE_OPERAND (declarator
, 0);
10378 op
= IDENTIFIER_OPNAME_P (tmp
);
10379 if (IDENTIFIER_TYPENAME_P (tmp
))
10381 if (IDENTIFIER_GLOBAL_VALUE (tmp
)
10382 && (TREE_CODE (IDENTIFIER_GLOBAL_VALUE (tmp
))
10384 name
= IDENTIFIER_POINTER (tmp
);
10386 name
= "<invalid operator>";
10389 error ("storage class specified for %s `%s'",
10390 op
? "member operator" : "field",
10395 if (decl_context
== PARM
|| decl_context
== CATCHPARM
)
10396 error ("storage class specified for parameter `%s'", name
);
10398 error ("storage class specified for typename");
10400 RIDBIT_RESET (RID_REGISTER
, specbits
);
10401 RIDBIT_RESET (RID_AUTO
, specbits
);
10402 RIDBIT_RESET (RID_EXTERN
, specbits
);
10405 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
10407 if (toplevel_bindings_p ())
10409 /* It's common practice (and completely valid) to have a const
10410 be initialized and declared extern. */
10411 if (!(type_quals
& TYPE_QUAL_CONST
))
10412 warning ("`%s' initialized and declared `extern'", name
);
10415 error ("`%s' has both `extern' and initializer", name
);
10417 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
10418 && ! toplevel_bindings_p ())
10419 error ("nested function `%s' declared `extern'", name
);
10420 else if (toplevel_bindings_p ())
10422 if (RIDBIT_SETP (RID_AUTO
, specbits
))
10423 error ("top-level declaration of `%s' specifies `auto'", name
);
10426 if (nclasses
> 0 && friendp
)
10427 error ("storage class specifiers invalid in friend function declarations");
10429 /* Now figure out the structure of the declarator proper.
10430 Descend through it, creating more complex types, until we reach
10431 the declared identifier (or NULL_TREE, in an absolute declarator). */
10433 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
10434 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
10436 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
10437 an INDIRECT_REF (for *...),
10438 a CALL_EXPR (for ...(...)),
10439 an identifier (for the name being declared)
10440 or a null pointer (for the place in an absolute declarator
10441 where the name was omitted).
10442 For the last two cases, we have just exited the loop.
10444 For C++ it could also be
10445 a SCOPE_REF (for class :: ...). In this case, we have converted
10446 sensible names to types, and those are the values we use to
10447 qualify the member name.
10448 an ADDR_EXPR (for &...),
10449 a BIT_NOT_EXPR (for destructors)
10451 At this point, TYPE is the type of elements of an array,
10452 or for a function to return, or for a pointer to point to.
10453 After this sequence of ifs, TYPE is the type of the
10454 array or function or pointer, and DECLARATOR has had its
10455 outermost layer removed. */
10457 if (type
== error_mark_node
)
10459 if (TREE_CODE (declarator
) == SCOPE_REF
)
10460 declarator
= TREE_OPERAND (declarator
, 1);
10462 declarator
= TREE_OPERAND (declarator
, 0);
10465 if (quals
!= NULL_TREE
10466 && (declarator
== NULL_TREE
10467 || TREE_CODE (declarator
) != SCOPE_REF
))
10469 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
10470 ctype
= TYPE_METHOD_BASETYPE (type
);
10471 if (ctype
!= NULL_TREE
)
10473 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
10474 grok_method_quals (ctype
, dummy
, quals
);
10475 type
= TREE_TYPE (dummy
);
10476 ctype
= TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (type
)));
10481 switch (TREE_CODE (declarator
))
10485 /* We encode a declarator with embedded attributes using
10487 tree attrs
= TREE_PURPOSE (declarator
);
10491 declarator
= TREE_VALUE (declarator
);
10492 inner_decl
= declarator
;
10493 while (inner_decl
!= NULL_TREE
10494 && TREE_CODE (inner_decl
) == TREE_LIST
)
10495 inner_decl
= TREE_VALUE (inner_decl
);
10497 if (inner_decl
== NULL_TREE
10498 || TREE_CODE (inner_decl
) == IDENTIFIER_NODE
)
10499 attr_flags
|= (int) ATTR_FLAG_DECL_NEXT
;
10500 if (TREE_CODE (inner_decl
) == CALL_EXPR
)
10501 attr_flags
|= (int) ATTR_FLAG_FUNCTION_NEXT
;
10502 if (TREE_CODE (inner_decl
) == ARRAY_REF
)
10503 attr_flags
|= (int) ATTR_FLAG_ARRAY_NEXT
;
10504 returned_attrs
= decl_attributes (&type
,
10505 chainon (returned_attrs
, attrs
),
10512 register tree size
;
10514 size
= TREE_OPERAND (declarator
, 1);
10516 /* VC++ spells a zero-sized array with []. */
10517 if (size
== NULL_TREE
&& decl_context
== FIELD
&& ! staticp
10518 && ! RIDBIT_SETP (RID_TYPEDEF
, specbits
))
10519 size
= integer_zero_node
;
10521 declarator
= TREE_OPERAND (declarator
, 0);
10523 type
= create_array_type_for_decl (dname
, type
, size
);
10525 /* VLAs never work as fields. */
10526 if (decl_context
== FIELD
&& !processing_template_decl
10527 && TREE_CODE (type
) == ARRAY_TYPE
10528 && TYPE_DOMAIN (type
) != NULL_TREE
10529 && !TREE_CONSTANT (TYPE_MAX_VALUE (TYPE_DOMAIN (type
))))
10531 cp_error ("size of member `%D' is not constant", dname
);
10532 /* Proceed with arbitrary constant size, so that offset
10533 computations don't get confused. */
10534 type
= create_array_type_for_decl (dname
, TREE_TYPE (type
),
10546 tree inner_parms
= CALL_DECLARATOR_PARMS (declarator
);
10547 tree inner_decl
= TREE_OPERAND (declarator
, 0);
10549 /* Declaring a function type.
10550 Make sure we have a valid type for the function to return. */
10552 /* We now know that the TYPE_QUALS don't apply to the
10553 decl, but to its return type. */
10554 type_quals
= TYPE_UNQUALIFIED
;
10556 /* Warn about some types functions can't return. */
10558 if (TREE_CODE (type
) == FUNCTION_TYPE
)
10560 error ("`%s' declared as function returning a function", name
);
10561 type
= integer_type_node
;
10563 if (TREE_CODE (type
) == ARRAY_TYPE
)
10565 error ("`%s' declared as function returning an array", name
);
10566 type
= integer_type_node
;
10569 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
10570 inner_decl
= TREE_OPERAND (inner_decl
, 1);
10572 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
10573 inner_decl
= dname
;
10575 /* Pick up type qualifiers which should be applied to `this'. */
10576 quals
= CALL_DECLARATOR_QUALS (declarator
);
10578 /* Pick up the exception specifications. */
10579 raises
= CALL_DECLARATOR_EXCEPTION_SPEC (declarator
);
10581 /* Say it's a definition only for the CALL_EXPR
10582 closest to the identifier. */
10585 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
10586 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
10587 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
10589 if (ctype
== NULL_TREE
10590 && decl_context
== FIELD
10592 && (friendp
== 0 || dname
== current_class_name
))
10593 ctype
= current_class_type
;
10595 if (ctype
&& sfk
== sfk_conversion
)
10596 TYPE_HAS_CONVERSION (ctype
) = 1;
10597 if (ctype
&& constructor_name (ctype
) == dname
)
10599 /* We are within a class's scope. If our declarator name
10600 is the same as the class name, and we are defining
10601 a function, then it is a constructor/destructor, and
10602 therefore returns a void type. */
10604 if (flags
== DTOR_FLAG
)
10606 /* ISO C++ 12.4/2. A destructor may not be
10607 declared const or volatile. A destructor may
10610 error ("destructor cannot be static member function");
10613 cp_error ("destructors may not be `%s'",
10614 IDENTIFIER_POINTER (TREE_VALUE (quals
)));
10617 if (decl_context
== FIELD
)
10619 if (! member_function_or_else (ctype
,
10620 current_class_type
,
10622 return void_type_node
;
10625 else /* It's a constructor. */
10627 if (explicitp
== 1)
10629 /* ISO C++ 12.1. A constructor may not be
10630 declared const or volatile. A constructor may
10631 not be virtual. A constructor may not be
10634 error ("constructor cannot be static member function");
10637 pedwarn ("constructors cannot be declared virtual");
10642 cp_error ("constructors may not be `%s'",
10643 IDENTIFIER_POINTER (TREE_VALUE (quals
)));
10647 RID_BIT_TYPE tmp_bits
;
10648 memcpy (&tmp_bits
, &specbits
, sizeof (RID_BIT_TYPE
));
10649 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
10650 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
10651 if (RIDBIT_ANY_SET (tmp_bits
))
10652 error ("return value type specifier for constructor ignored");
10654 if (decl_context
== FIELD
)
10656 if (! member_function_or_else (ctype
,
10657 current_class_type
,
10659 return void_type_node
;
10660 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
10661 if (sfk
!= sfk_constructor
)
10665 if (decl_context
== FIELD
)
10671 error ("can't initialize friend function `%s'", name
);
10674 /* Cannot be both friend and virtual. */
10675 error ("virtual functions cannot be friends");
10676 RIDBIT_RESET (RID_FRIEND
, specbits
);
10679 if (decl_context
== NORMAL
)
10680 error ("friend declaration not in class definition");
10681 if (current_function_decl
&& funcdef_flag
)
10682 cp_error ("can't define friend function `%s' in a local class definition",
10686 /* Construct the function type and go to the next
10687 inner layer of declarator. */
10689 declarator
= TREE_OPERAND (declarator
, 0);
10691 /* FIXME: This is where default args should be fully
10694 arg_types
= grokparms (inner_parms
);
10696 if (declarator
&& flags
== DTOR_FLAG
)
10698 /* A destructor declared in the body of a class will
10699 be represented as a BIT_NOT_EXPR. But, we just
10700 want the underlying IDENTIFIER. */
10701 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
10702 declarator
= TREE_OPERAND (declarator
, 0);
10704 if (arg_types
!= void_list_node
)
10706 cp_error ("destructors may not have parameters");
10707 arg_types
= void_list_node
;
10708 last_function_parms
= NULL_TREE
;
10712 /* ANSI says that `const int foo ();'
10713 does not make the function foo const. */
10714 type
= build_function_type (type
, arg_types
);
10718 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
10719 if (TREE_PURPOSE (t
)
10720 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
10722 add_defarg_fn (type
);
10731 /* Filter out pointers-to-references and references-to-references.
10732 We can get these if a TYPE_DECL is used. */
10734 if (TREE_CODE (type
) == REFERENCE_TYPE
)
10736 error ("cannot declare %s to references",
10737 TREE_CODE (declarator
) == ADDR_EXPR
10738 ? "references" : "pointers");
10739 declarator
= TREE_OPERAND (declarator
, 0);
10743 if (TREE_CODE (type
) == OFFSET_TYPE
10744 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
10745 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
10747 cp_error ("cannot declare pointer to `%#T' member",
10749 type
= TREE_TYPE (type
);
10752 /* Merge any constancy or volatility into the target type
10753 for the pointer. */
10755 /* We now know that the TYPE_QUALS don't apply to the decl,
10756 but to the target of the pointer. */
10757 type_quals
= TYPE_UNQUALIFIED
;
10759 if (TREE_CODE (declarator
) == ADDR_EXPR
)
10761 if (TREE_CODE (type
) == VOID_TYPE
)
10762 error ("invalid type: `void &'");
10764 type
= build_reference_type (type
);
10766 else if (TREE_CODE (type
) == METHOD_TYPE
)
10767 type
= build_ptrmemfunc_type (build_pointer_type (type
));
10769 type
= build_pointer_type (type
);
10771 /* Process a list of type modifier keywords (such as
10772 const or volatile) that were given inside the `*' or `&'. */
10774 if (TREE_TYPE (declarator
))
10776 register tree typemodlist
;
10782 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
10783 typemodlist
= TREE_CHAIN (typemodlist
))
10785 tree qualifier
= TREE_VALUE (typemodlist
);
10787 if (qualifier
== ridpointers
[(int) RID_CONST
])
10789 else if (qualifier
== ridpointers
[(int) RID_VOLATILE
])
10791 else if (qualifier
== ridpointers
[(int) RID_RESTRICT
])
10796 error ("invalid type modifier within pointer declarator");
10800 pedwarn ("duplicate `const'");
10802 pedwarn ("duplicate `volatile'");
10804 pedwarn ("duplicate `restrict'");
10806 type_quals
= ((constp
? TYPE_QUAL_CONST
: 0)
10807 | (restrictp
? TYPE_QUAL_RESTRICT
: 0)
10808 | (volatilep
? TYPE_QUAL_VOLATILE
: 0));
10809 if (TREE_CODE (declarator
) == ADDR_EXPR
10810 && (constp
|| volatilep
))
10813 pedwarn ("discarding `const' applied to a reference");
10815 pedwarn ("discarding `volatile' applied to a reference");
10816 type_quals
&= ~(TYPE_QUAL_CONST
| TYPE_QUAL_VOLATILE
);
10818 type
= cp_build_qualified_type (type
, type_quals
);
10820 declarator
= TREE_OPERAND (declarator
, 0);
10826 /* We have converted type names to NULL_TREE if the
10827 name was bogus, or to a _TYPE node, if not.
10829 The variable CTYPE holds the type we will ultimately
10830 resolve to. The code here just needs to build
10831 up appropriate member types. */
10832 tree sname
= TREE_OPERAND (declarator
, 1);
10835 /* Destructors can have their visibilities changed as well. */
10836 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
10837 sname
= TREE_OPERAND (sname
, 0);
10839 if (TREE_COMPLEXITY (declarator
) == 0)
10840 /* This needs to be here, in case we are called
10841 multiple times. */ ;
10842 else if (TREE_COMPLEXITY (declarator
) == -1)
10843 /* Namespace member. */
10844 pop_decl_namespace ();
10845 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
10846 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
10847 else if (! IS_AGGR_TYPE_CODE
10848 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
10850 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
10852 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
10853 that refer to ctype. They couldn't be resolved earlier
10854 because we hadn't pushed into the class yet.
10855 Example: resolve 'B<T>::type' in
10856 'B<typename B<T>::type> B<T>::f () { }'. */
10857 if (current_template_parms
10858 && uses_template_parms (type
)
10859 && uses_template_parms (current_class_type
))
10861 tree args
= current_template_args ();
10862 type
= tsubst (type
, args
, /*complain=*/1, NULL_TREE
);
10865 /* This pop_nested_class corresponds to the
10866 push_nested_class used to push into class scope for
10867 parsing the argument list of a function decl, in
10869 pop_nested_class ();
10870 TREE_COMPLEXITY (declarator
) = current_class_depth
;
10873 my_friendly_abort (16);
10875 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
10877 /* We had a reference to a global decl, or
10878 perhaps we were given a non-aggregate typedef,
10879 in which case we cleared this out, and should just
10880 keep going as though it wasn't there. */
10881 declarator
= sname
;
10884 ctype
= TREE_OPERAND (declarator
, 0);
10887 while (t
!= NULL_TREE
&& CLASS_TYPE_P (t
))
10889 /* You're supposed to have one `template <...>'
10890 for every template class, but you don't need one
10891 for a full specialization. For example:
10893 template <class T> struct S{};
10894 template <> struct S<int> { void f(); };
10895 void S<int>::f () {}
10897 is correct; there shouldn't be a `template <>' for
10898 the definition of `S<int>::f'. */
10899 if (CLASSTYPE_TEMPLATE_INFO (t
)
10900 && (CLASSTYPE_TEMPLATE_INSTANTIATION (t
)
10901 || uses_template_parms (CLASSTYPE_TI_ARGS (t
)))
10902 && PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t
)))
10903 template_count
+= 1;
10905 t
= TYPE_MAIN_DECL (t
);
10906 t
= DECL_CONTEXT (t
);
10909 if (sname
== NULL_TREE
)
10912 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
10914 /* This is the `standard' use of the scoping operator:
10915 basetype :: member . */
10917 if (ctype
== current_class_type
)
10923 Is this ill-formed? */
10926 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
10929 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
10931 if (current_class_type
== NULL_TREE
|| friendp
)
10932 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
10933 TYPE_ARG_TYPES (type
));
10936 cp_error ("cannot declare member function `%T::%s' within `%T'",
10937 ctype
, name
, current_class_type
);
10938 return void_type_node
;
10941 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
10942 || COMPLETE_TYPE_P (complete_type (ctype
)))
10944 /* Have to move this code elsewhere in this function.
10945 this code is used for i.e., typedef int A::M; M *pm;
10947 It is? How? jason 10/2/94 */
10949 if (current_class_type
)
10951 cp_error ("cannot declare member `%T::%s' within `%T'",
10952 ctype
, name
, current_class_type
);
10953 return void_type_node
;
10955 type
= build_offset_type (ctype
, type
);
10959 incomplete_type_error (NULL_TREE
, ctype
);
10960 return error_mark_node
;
10963 declarator
= sname
;
10965 else if (TREE_CODE (sname
) == SCOPE_REF
)
10966 my_friendly_abort (17);
10970 declarator
= TREE_OPERAND (declarator
, 1);
10971 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
10972 /* In this case, we will deal with it later. */
10976 if (TREE_CODE (type
) == FUNCTION_TYPE
)
10977 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
10978 TYPE_ARG_TYPES (type
));
10980 type
= build_offset_type (ctype
, type
);
10987 declarator
= TREE_OPERAND (declarator
, 0);
10992 case ENUMERAL_TYPE
:
10993 declarator
= NULL_TREE
;
10997 declarator
= NULL_TREE
;
11001 my_friendly_abort (158);
11005 if (returned_attrs
)
11008 *attrlist
= chainon (returned_attrs
, *attrlist
);
11010 attrlist
= &returned_attrs
;
11013 /* Now TYPE has the actual type. */
11015 /* Did array size calculations overflow? */
11017 if (TREE_CODE (type
) == ARRAY_TYPE
11018 && COMPLETE_TYPE_P (type
)
11019 && TREE_OVERFLOW (TYPE_SIZE (type
)))
11021 error ("size of array `%s' is too large", name
);
11022 /* If we proceed with the array type as it is, we'll eventully
11023 crash in tree_low_cst(). */
11024 type
= error_mark_node
;
11027 if (explicitp
== 1 || (explicitp
&& friendp
))
11029 /* [dcl.fct.spec] The explicit specifier shall only be used in
11030 declarations of constructors within a class definition. */
11031 error ("only declarations of constructors can be `explicit'");
11035 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
11037 if (current_class_name
== NULL_TREE
|| decl_context
== PARM
|| friendp
)
11039 error ("non-member `%s' cannot be declared `mutable'", name
);
11040 RIDBIT_RESET (RID_MUTABLE
, specbits
);
11042 else if (decl_context
== TYPENAME
|| RIDBIT_SETP (RID_TYPEDEF
, specbits
))
11044 error ("non-object member `%s' cannot be declared `mutable'", name
);
11045 RIDBIT_RESET (RID_MUTABLE
, specbits
);
11047 else if (TREE_CODE (type
) == FUNCTION_TYPE
11048 || TREE_CODE (type
) == METHOD_TYPE
)
11050 error ("function `%s' cannot be declared `mutable'", name
);
11051 RIDBIT_RESET (RID_MUTABLE
, specbits
);
11055 error ("static `%s' cannot be declared `mutable'", name
);
11056 RIDBIT_RESET (RID_MUTABLE
, specbits
);
11058 else if (type_quals
& TYPE_QUAL_CONST
)
11060 error ("const `%s' cannot be declared `mutable'", name
);
11061 RIDBIT_RESET (RID_MUTABLE
, specbits
);
11065 if (declarator
== NULL_TREE
11066 || TREE_CODE (declarator
) == IDENTIFIER_NODE
11067 || (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
11068 && (TREE_CODE (type
) == FUNCTION_TYPE
11069 || TREE_CODE (type
) == METHOD_TYPE
)))
11071 else if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
11073 cp_error ("template-id `%D' used as a declarator", declarator
);
11074 declarator
= dname
;
11077 /* Unexpected declarator format. */
11078 my_friendly_abort (990210);
11080 /* If this is declaring a typedef name, return a TYPE_DECL. */
11082 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
11086 /* Note that the grammar rejects storage classes
11087 in typenames, fields or parameters. */
11088 if (current_lang_name
== lang_name_java
)
11089 TYPE_FOR_JAVA (type
) = 1;
11091 if (decl_context
== FIELD
)
11093 if (declarator
== constructor_name (current_class_type
))
11094 cp_pedwarn ("ISO C++ forbids nested type `%D' with same name as enclosing class",
11096 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
11100 decl
= build_decl (TYPE_DECL
, declarator
, type
);
11101 if (!current_function_decl
)
11102 DECL_CONTEXT (decl
) = FROB_CONTEXT (current_namespace
);
11105 /* If the user declares "typedef struct {...} foo" then the
11106 struct will have an anonymous name. Fill that name in now.
11107 Nothing can refer to it, so nothing needs know about the name
11109 if (type
!= error_mark_node
11111 && TYPE_NAME (type
)
11112 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
11113 && TYPE_ANONYMOUS_P (type
)
11114 && cp_type_quals (type
) == TYPE_UNQUALIFIED
)
11116 tree oldname
= TYPE_NAME (type
);
11119 /* Replace the anonymous name with the real name everywhere. */
11120 lookup_tag_reverse (type
, declarator
);
11121 for (t
= TYPE_MAIN_VARIANT (type
); t
; t
= TYPE_NEXT_VARIANT (t
))
11122 if (TYPE_NAME (t
) == oldname
)
11123 TYPE_NAME (t
) = decl
;
11125 if (TYPE_LANG_SPECIFIC (type
))
11126 TYPE_WAS_ANONYMOUS (type
) = 1;
11128 /* If this is a typedef within a template class, the nested
11129 type is a (non-primary) template. The name for the
11130 template needs updating as well. */
11131 if (TYPE_LANG_SPECIFIC (type
) && CLASSTYPE_TEMPLATE_INFO (type
))
11132 DECL_NAME (CLASSTYPE_TI_TEMPLATE (type
))
11133 = TYPE_IDENTIFIER (type
);
11135 /* FIXME remangle member functions; member functions of a
11136 type with external linkage have external linkage. */
11139 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
11141 cp_error_at ("typedef name may not be class-qualified", decl
);
11146 if (ctype
== NULL_TREE
)
11148 if (TREE_CODE (type
) != METHOD_TYPE
)
11149 cp_error_at ("invalid type qualifier for non-member function type", decl
);
11151 ctype
= TYPE_METHOD_BASETYPE (type
);
11153 if (ctype
!= NULL_TREE
)
11154 grok_method_quals (ctype
, decl
, quals
);
11157 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
11158 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
11159 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
11161 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
11162 inlinep
, friendp
, raises
!= NULL_TREE
);
11165 error ("typedef declaration includes an initializer");
11170 /* Detect the case of an array type of unspecified size
11171 which came, as such, direct from a typedef name.
11172 We must copy the type, so that each identifier gets
11173 a distinct type, so that each identifier's size can be
11174 controlled separately by its own initializer. */
11176 if (type
!= 0 && typedef_type
!= 0
11177 && TREE_CODE (type
) == ARRAY_TYPE
&& TYPE_DOMAIN (type
) == 0
11178 && TYPE_MAIN_VARIANT (type
) == TYPE_MAIN_VARIANT (typedef_type
))
11180 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
11183 /* Detect where we're using a typedef of function type to declare a
11184 function. last_function_parms will not be set, so we must create
11187 if (type
== typedef_type
&& TREE_CODE (type
) == FUNCTION_TYPE
)
11189 tree decls
= NULL_TREE
;
11192 for (args
= TYPE_ARG_TYPES (type
); args
; args
= TREE_CHAIN (args
))
11194 tree decl
= build_decl (PARM_DECL
, NULL_TREE
, TREE_VALUE (args
));
11196 TREE_CHAIN (decl
) = decls
;
11200 last_function_parms
= nreverse (decls
);
11203 /* If this is a type name (such as, in a cast or sizeof),
11204 compute the type and return it now. */
11206 if (decl_context
== TYPENAME
)
11208 /* Note that the grammar rejects storage classes
11209 in typenames, fields or parameters. */
11210 if (type_quals
!= TYPE_UNQUALIFIED
)
11211 type_quals
= TYPE_UNQUALIFIED
;
11213 /* Special case: "friend class foo" looks like a TYPENAME context. */
11216 if (type_quals
!= TYPE_UNQUALIFIED
)
11218 cp_error ("type qualifiers specified for friend class declaration");
11219 type_quals
= TYPE_UNQUALIFIED
;
11223 cp_error ("`inline' specified for friend class declaration");
11227 /* Until core issue 180 is resolved, allow 'friend typename A::B'.
11228 But don't allow implicit typenames except with a class-key. */
11229 if (!current_aggr
&& (TREE_CODE (type
) != TYPENAME_TYPE
11230 || IMPLICIT_TYPENAME_P (type
)))
11232 if (TREE_CODE (type
) == TEMPLATE_TYPE_PARM
)
11233 cp_pedwarn ("template parameters cannot be friends");
11234 else if (TREE_CODE (type
) == TYPENAME_TYPE
)
11236 friend declaration requires class-key, i.e. `friend class %T::%T'",
11237 constructor_name (current_class_type
),
11238 TYPE_IDENTIFIER (type
));
11241 friend declaration requires class-key, i.e. `friend %#T'",
11245 /* Only try to do this stuff if we didn't already give up. */
11246 if (type
!= integer_type_node
)
11248 /* DR 209. The friendly class does not need to be accessible
11249 in the scope of the class granting friendship. */
11250 skip_type_access_control ();
11252 /* A friendly class? */
11253 if (current_class_type
)
11254 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
11256 cp_error ("trying to make class `%T' a friend of global scope",
11259 type
= void_type_node
;
11264 if (ctype
== NULL_TREE
)
11266 if (TREE_CODE (type
) != METHOD_TYPE
)
11267 cp_error ("invalid qualifiers on non-member function type");
11269 ctype
= TYPE_METHOD_BASETYPE (type
);
11273 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
11274 grok_method_quals (ctype
, dummy
, quals
);
11275 type
= TREE_TYPE (dummy
);
11281 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
11282 && decl_context
!= CATCHPARM
11283 && TREE_CODE (type
) != UNION_TYPE
11286 cp_error ("abstract declarator `%T' used as declaration", type
);
11287 declarator
= make_anon_name ();
11290 /* `void' at top level (not within pointer)
11291 is allowed only in typedefs or type names.
11292 We don't complain about parms either, but that is because
11293 a better error message can be made later. */
11295 if (TREE_CODE (type
) == VOID_TYPE
&& decl_context
!= PARM
)
11298 error ("unnamed variable or field declared void");
11299 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
11301 if (IDENTIFIER_OPNAME_P (declarator
))
11302 my_friendly_abort (356);
11304 error ("variable or field `%s' declared void", name
);
11307 error ("variable or field declared void");
11308 type
= integer_type_node
;
11311 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
11312 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
11314 if (decl_context
== PARM
|| decl_context
== CATCHPARM
)
11316 if (ctype
|| in_namespace
)
11317 error ("cannot use `::' in parameter declaration");
11319 /* A parameter declared as an array of T is really a pointer to T.
11320 One declared as a function is really a pointer to a function.
11321 One declared as a member is really a pointer to member. */
11323 if (TREE_CODE (type
) == ARRAY_TYPE
)
11325 /* Transfer const-ness of array into that of type pointed to. */
11326 type
= build_pointer_type (TREE_TYPE (type
));
11327 type_quals
= TYPE_UNQUALIFIED
;
11329 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
11330 type
= build_pointer_type (type
);
11331 else if (TREE_CODE (type
) == OFFSET_TYPE
)
11332 type
= build_pointer_type (type
);
11336 register tree decl
;
11338 if (decl_context
== PARM
)
11340 decl
= build_decl (PARM_DECL
, declarator
, type
);
11342 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
11343 inlinep
, friendp
, raises
!= NULL_TREE
);
11345 /* Compute the type actually passed in the parmlist,
11346 for the case where there is no prototype.
11347 (For example, shorts and chars are passed as ints.)
11348 When there is a prototype, this is overridden later. */
11350 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
11352 else if (decl_context
== FIELD
)
11354 if (type
== error_mark_node
)
11356 /* Happens when declaring arrays of sizes which
11357 are error_mark_node, for example. */
11360 else if (in_namespace
&& !friendp
)
11362 /* Something like struct S { int N::j; }; */
11363 cp_error ("invalid use of `::'");
11366 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
11369 tree function_context
;
11371 /* We catch the others as conflicts with the builtin
11373 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
11375 cp_error ("function `%D' cannot be declared friend",
11382 if (ctype
== NULL_TREE
)
11383 ctype
= current_class_type
;
11385 if (ctype
== NULL_TREE
)
11387 cp_error ("can't make `%D' into a method -- not in a class",
11389 return void_type_node
;
11392 /* ``A union may [ ... ] not [ have ] virtual functions.''
11394 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
11396 cp_error ("function `%D' declared virtual inside a union",
11398 return void_type_node
;
11401 if (declarator
== ansi_opname (NEW_EXPR
)
11402 || declarator
== ansi_opname (VEC_NEW_EXPR
)
11403 || declarator
== ansi_opname (DELETE_EXPR
)
11404 || declarator
== ansi_opname (VEC_DELETE_EXPR
))
11408 cp_error ("`%D' cannot be declared virtual, since it is always static",
11413 else if (staticp
< 2)
11414 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
11415 TYPE_ARG_TYPES (type
));
11418 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
11419 function_context
= (ctype
!= NULL_TREE
) ?
11420 decl_function_context (TYPE_MAIN_DECL (ctype
)) : NULL_TREE
;
11421 publicp
= (! friendp
|| ! staticp
)
11422 && function_context
== NULL_TREE
;
11423 decl
= grokfndecl (ctype
, type
,
11424 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
11425 ? declarator
: dname
,
11427 virtualp
, flags
, quals
, raises
,
11428 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
11429 funcdef_flag
, template_count
, in_namespace
);
11430 if (decl
== NULL_TREE
)
11433 /* This clobbers the attrs stored in `decl' from `attrlist'. */
11434 /* The decl and setting of decl_attr is also turned off. */
11435 decl
= build_decl_attribute_variant (decl
, decl_attr
);
11438 /* [class.conv.ctor]
11440 A constructor declared without the function-specifier
11441 explicit that can be called with a single parameter
11442 specifies a conversion from the type of its first
11443 parameter to the type of its class. Such a constructor
11444 is called a converting constructor. */
11445 if (explicitp
== 2)
11446 DECL_NONCONVERTING_P (decl
) = 1;
11447 else if (DECL_CONSTRUCTOR_P (decl
))
11449 /* The constructor can be called with exactly one
11450 parameter if there is at least one parameter, and
11451 any subsequent parameters have default arguments.
11452 Ignore any compiler-added parms. */
11453 tree arg_types
= FUNCTION_FIRST_USER_PARMTYPE (decl
);
11455 if (arg_types
== void_list_node
11457 && TREE_CHAIN (arg_types
)
11458 && TREE_CHAIN (arg_types
) != void_list_node
11459 && !TREE_PURPOSE (TREE_CHAIN (arg_types
))))
11460 DECL_NONCONVERTING_P (decl
) = 1;
11463 else if (TREE_CODE (type
) == METHOD_TYPE
)
11465 /* We only get here for friend declarations of
11466 members of other classes. */
11467 /* All method decls are public, so tell grokfndecl to set
11468 TREE_PUBLIC, also. */
11469 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
11470 virtualp
, flags
, quals
, raises
,
11471 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
11472 template_count
, in_namespace
);
11473 if (decl
== NULL_TREE
)
11476 else if (!staticp
&& ! processing_template_decl
11477 && !COMPLETE_TYPE_P (complete_type (type
))
11478 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
11481 cp_error ("field `%D' has incomplete type", declarator
);
11483 cp_error ("name `%T' has incomplete type", type
);
11485 /* If we're instantiating a template, tell them which
11486 instantiation made the field's type be incomplete. */
11487 if (current_class_type
11488 && TYPE_NAME (current_class_type
)
11489 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
11490 && declspecs
&& TREE_VALUE (declspecs
)
11491 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
11492 cp_error (" in instantiation of template `%T'",
11493 current_class_type
);
11495 type
= error_mark_node
;
11502 error ("`%s' is neither function nor member function; cannot be declared friend",
11503 IDENTIFIER_POINTER (declarator
));
11511 /* Friends are treated specially. */
11512 tree t
= NULL_TREE
;
11514 /* DR 209. The friend does not need to be accessible at this
11516 skip_type_access_control ();
11518 if (ctype
== current_class_type
)
11519 warning ("member functions are implicitly friends of their class");
11521 if (decl
&& DECL_NAME (decl
))
11523 if (template_class_depth (current_class_type
) == 0)
11525 decl
= check_explicit_specialization
11527 template_count
, 2 * (funcdef_flag
!= 0) + 4);
11528 if (decl
== error_mark_node
)
11529 return error_mark_node
;
11532 t
= do_friend (ctype
, declarator
, decl
,
11533 last_function_parms
, *attrlist
, flags
, quals
,
11536 if (t
&& funcdef_flag
)
11538 return void_type_node
;
11541 /* Structure field. It may not be a function, except for C++ */
11543 if (decl
== NULL_TREE
)
11549 /* An attempt is being made to initialize a non-static
11550 member. But, from [class.mem]:
11552 4 A member-declarator can contain a
11553 constant-initializer only if it declares a static
11554 member (_class.static_) of integral or enumeration
11555 type, see _class.static.data_.
11557 This used to be relatively common practice, but
11558 the rest of the compiler does not correctly
11559 handle the initialization unless the member is
11560 static so we make it static below. */
11561 cp_pedwarn ("ISO C++ forbids initialization of member `%D'",
11563 cp_pedwarn ("making `%D' static", declarator
);
11567 if (uses_template_parms (type
))
11568 /* We'll check at instantiation time. */
11570 else if (check_static_variable_definition (declarator
,
11572 /* If we just return the declaration, crashes
11573 will sometimes occur. We therefore return
11574 void_type_node, as if this was a friend
11575 declaration, to cause callers to completely
11576 ignore this declaration. */
11577 return void_type_node
;
11580 /* 9.2p13 [class.mem] */
11581 if (declarator
== constructor_name (current_class_type
)
11582 /* The standard does not allow non-static data members
11583 here either, but we agreed at the 10/99 meeting
11584 to change that in TC 1 so that they are allowed in
11585 classes with no user-defined constructors. */
11587 cp_pedwarn ("ISO C++ forbids static data member `%D' with same name as enclosing class",
11592 /* C++ allows static class members. All other work
11593 for this is done by grokfield. */
11594 decl
= build_lang_decl (VAR_DECL
, declarator
, type
);
11595 TREE_STATIC (decl
) = 1;
11596 /* In class context, 'static' means public access. */
11597 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = 1;
11601 decl
= build_decl (FIELD_DECL
, declarator
, type
);
11602 DECL_NONADDRESSABLE_P (decl
) = bitfield
;
11603 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
11605 DECL_MUTABLE_P (decl
) = 1;
11606 RIDBIT_RESET (RID_MUTABLE
, specbits
);
11610 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
11611 inlinep
, friendp
, raises
!= NULL_TREE
);
11614 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
11616 tree original_name
;
11622 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
11623 original_name
= dname
;
11625 original_name
= declarator
;
11627 if (RIDBIT_SETP (RID_AUTO
, specbits
))
11628 error ("storage class `auto' invalid for function `%s'", name
);
11629 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
11630 error ("storage class `register' invalid for function `%s'", name
);
11632 /* Function declaration not at top level.
11633 Storage classes other than `extern' are not allowed
11634 and `extern' makes no difference. */
11635 if (! toplevel_bindings_p ()
11636 && (RIDBIT_SETP (RID_STATIC
, specbits
)
11637 || RIDBIT_SETP (RID_INLINE
, specbits
))
11640 if (RIDBIT_SETP (RID_STATIC
, specbits
))
11641 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
11643 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
11646 if (ctype
== NULL_TREE
)
11650 error ("virtual non-class function `%s'", name
);
11654 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
11655 type
= build_cplus_method_type (ctype
, TREE_TYPE (type
),
11656 TYPE_ARG_TYPES (type
));
11658 /* Record presence of `static'. */
11659 publicp
= (ctype
!= NULL_TREE
11660 || RIDBIT_SETP (RID_EXTERN
, specbits
)
11661 || !RIDBIT_SETP (RID_STATIC
, specbits
));
11663 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
11664 virtualp
, flags
, quals
, raises
,
11666 publicp
, inlinep
, funcdef_flag
,
11667 template_count
, in_namespace
);
11668 if (decl
== NULL_TREE
)
11673 int illegal_static
= 0;
11675 /* Don't allow a static member function in a class, and forbid
11676 declaring main to be static. */
11677 if (TREE_CODE (type
) == METHOD_TYPE
)
11679 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
11680 illegal_static
= 1;
11682 else if (current_function_decl
)
11684 /* FIXME need arm citation */
11685 error ("cannot declare static function inside another function");
11686 illegal_static
= 1;
11689 if (illegal_static
)
11692 RIDBIT_RESET (RID_STATIC
, specbits
);
11698 /* It's a variable. */
11700 /* An uninitialized decl with `extern' is a reference. */
11701 decl
= grokvardecl (type
, declarator
, &specbits
,
11703 (type_quals
& TYPE_QUAL_CONST
) != 0,
11705 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
11706 inlinep
, friendp
, raises
!= NULL_TREE
);
11710 DECL_CONTEXT (decl
) = ctype
;
11713 cp_pedwarn ("`static' may not be used when defining (as opposed to declaring) a static data member");
11715 RIDBIT_RESET (RID_STATIC
, specbits
);
11717 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
11719 cp_error ("static member `%D' declared `register'", decl
);
11720 RIDBIT_RESET (RID_REGISTER
, specbits
);
11722 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
11724 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
11726 RIDBIT_RESET (RID_EXTERN
, specbits
);
11731 my_friendly_assert (!RIDBIT_SETP (RID_MUTABLE
, specbits
), 19990927);
11733 /* Record `register' declaration for warnings on &
11734 and in case doing stupid register allocation. */
11736 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
11737 DECL_REGISTER (decl
) = 1;
11739 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
11740 DECL_THIS_EXTERN (decl
) = 1;
11742 if (RIDBIT_SETP (RID_STATIC
, specbits
))
11743 DECL_THIS_STATIC (decl
) = 1;
11745 /* Record constancy and volatility. There's no need to do this
11746 when processing a template; we'll do this for the instantiated
11747 declaration based on the type of DECL. */
11748 if (!processing_template_decl
)
11749 c_apply_type_quals_to_decl (type_quals
, decl
);
11755 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
11756 An empty exprlist is a parmlist. An exprlist which
11757 contains only identifiers at the global level
11758 is a parmlist. Otherwise, it is an exprlist. */
11761 parmlist_is_exprlist (exprs
)
11764 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
11767 if (toplevel_bindings_p ())
11769 /* At the global level, if these are all identifiers,
11770 then it is a parmlist. */
11773 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
11775 exprs
= TREE_CHAIN (exprs
);
11782 /* Subroutine of start_function. Ensure that each of the parameter
11783 types (as listed in PARMS) is complete, as is required for a
11784 function definition. */
11787 require_complete_types_for_parms (parms
)
11790 for (; parms
; parms
= TREE_CHAIN (parms
))
11792 if (VOID_TYPE_P (TREE_TYPE (parms
)))
11793 /* grokparms will have already issued an error */
11794 TREE_TYPE (parms
) = error_mark_node
;
11795 else if (complete_type_or_else (TREE_TYPE (parms
), parms
))
11796 layout_decl (parms
, 0);
11798 TREE_TYPE (parms
) = error_mark_node
;
11802 /* Returns non-zero if T is a local variable. */
11805 local_variable_p (t
)
11808 if ((TREE_CODE (t
) == VAR_DECL
11809 /* A VAR_DECL with a context that is a _TYPE is a static data
11811 && !TYPE_P (CP_DECL_CONTEXT (t
))
11812 /* Any other non-local variable must be at namespace scope. */
11813 && !DECL_NAMESPACE_SCOPE_P (t
))
11814 || (TREE_CODE (t
) == PARM_DECL
))
11820 /* Returns non-zero if T is an automatic local variable or a label.
11821 (These are the declarations that need to be remapped when the code
11822 containing them is duplicated.) */
11825 nonstatic_local_decl_p (t
)
11828 return ((local_variable_p (t
) && !TREE_STATIC (t
))
11829 || TREE_CODE (t
) == LABEL_DECL
11830 || TREE_CODE (t
) == RESULT_DECL
);
11833 /* Like local_variable_p, but suitable for use as a tree-walking
11837 local_variable_p_walkfn (tp
, walk_subtrees
, data
)
11839 int *walk_subtrees ATTRIBUTE_UNUSED
;
11840 void *data ATTRIBUTE_UNUSED
;
11842 return ((local_variable_p (*tp
) && !DECL_ARTIFICIAL (*tp
))
11843 ? *tp
: NULL_TREE
);
11846 /* Check that ARG, which is a default-argument expression for a
11847 parameter DECL, is legal. Returns ARG, or ERROR_MARK_NODE, if
11848 something goes wrong. DECL may also be a _TYPE node, rather than a
11849 DECL, if there is no DECL available. */
11852 check_default_argument (decl
, arg
)
11859 if (TREE_CODE (arg
) == DEFAULT_ARG
)
11860 /* We get a DEFAULT_ARG when looking at an in-class declaration
11861 with a default argument. Ignore the argument for now; we'll
11862 deal with it after the class is complete. */
11865 if (processing_template_decl
|| uses_template_parms (arg
))
11866 /* We don't do anything checking until instantiation-time. Note
11867 that there may be uninstantiated arguments even for an
11868 instantiated function, since default arguments are not
11869 instantiated until they are needed. */
11878 decl_type
= TREE_TYPE (decl
);
11880 if (arg
== error_mark_node
11881 || decl
== error_mark_node
11882 || TREE_TYPE (arg
) == error_mark_node
11883 || decl_type
== error_mark_node
)
11884 /* Something already went wrong. There's no need to check
11886 return error_mark_node
;
11888 /* [dcl.fct.default]
11890 A default argument expression is implicitly converted to the
11892 if (!TREE_TYPE (arg
)
11893 || !can_convert_arg (decl_type
, TREE_TYPE (arg
), arg
))
11896 cp_error ("default argument for `%#D' has type `%T'",
11897 decl
, TREE_TYPE (arg
));
11899 cp_error ("default argument for parameter of type `%T' has type `%T'",
11900 decl_type
, TREE_TYPE (arg
));
11902 return error_mark_node
;
11905 /* [dcl.fct.default]
11907 Local variables shall not be used in default argument
11910 The keyword `this' shall not be used in a default argument of a
11911 member function. */
11912 var
= walk_tree_without_duplicates (&arg
, local_variable_p_walkfn
,
11916 cp_error ("default argument `%E' uses local variable `%D'",
11918 return error_mark_node
;
11925 /* Decode the list of parameter types for a function type.
11926 Given the list of things declared inside the parens,
11927 return a list of types.
11929 We determine whether ellipsis parms are used by PARMLIST_ELLIPSIS_P
11930 flag. If unset, we append void_list_node. A parmlist declared
11931 as `(void)' is accepted as the empty parmlist.
11933 Also set last_function_parms to the chain of PARM_DECLs. */
11936 grokparms (first_parm
)
11939 tree result
= NULL_TREE
;
11940 tree decls
= NULL_TREE
;
11941 int ellipsis
= !first_parm
|| PARMLIST_ELLIPSIS_P (first_parm
);
11945 my_friendly_assert (!first_parm
|| TREE_PARMLIST (first_parm
), 20001115);
11947 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
11949 tree type
= NULL_TREE
;
11950 register tree decl
= TREE_VALUE (parm
);
11951 tree init
= TREE_PURPOSE (parm
);
11953 chain
= TREE_CHAIN (parm
);
11954 /* @@ weak defense against parse errors. */
11955 if (TREE_CODE (decl
) != VOID_TYPE
11956 && TREE_CODE (decl
) != TREE_LIST
)
11958 /* Give various messages as the need arises. */
11959 if (TREE_CODE (decl
) == STRING_CST
)
11960 cp_error ("invalid string constant `%E'", decl
);
11961 else if (TREE_CODE (decl
) == INTEGER_CST
)
11962 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
11966 if (parm
== void_list_node
)
11969 decl
= grokdeclarator (TREE_VALUE (decl
), TREE_PURPOSE (decl
),
11970 PARM
, init
!= NULL_TREE
, NULL
);
11971 if (! decl
|| TREE_TYPE (decl
) == error_mark_node
)
11974 type
= TREE_TYPE (decl
);
11975 if (VOID_TYPE_P (type
))
11977 if (same_type_p (type
, void_type_node
)
11978 && !DECL_NAME (decl
) && !result
&& !chain
&& !ellipsis
)
11979 /* this is a parmlist of `(void)', which is ok. */
11981 incomplete_type_error (decl
, type
);
11982 /* It's not a good idea to actually create parameters of
11983 type `void'; other parts of the compiler assume that a
11984 void type terminates the parameter list. */
11985 type
= error_mark_node
;
11986 TREE_TYPE (decl
) = error_mark_node
;
11989 if (type
!= error_mark_node
)
11991 /* Top-level qualifiers on the parameters are
11992 ignored for function types. */
11993 type
= TYPE_MAIN_VARIANT (type
);
11994 if (TREE_CODE (type
) == METHOD_TYPE
)
11996 cp_error ("parameter `%D' invalidly declared method type", decl
);
11997 type
= build_pointer_type (type
);
11998 TREE_TYPE (decl
) = type
;
12000 else if (TREE_CODE (type
) == OFFSET_TYPE
)
12002 cp_error ("parameter `%D' invalidly declared offset type", decl
);
12003 type
= build_pointer_type (type
);
12004 TREE_TYPE (decl
) = type
;
12006 else if (abstract_virtuals_error (decl
, type
))
12007 any_error
= 1; /* Seems like a good idea. */
12008 else if (POINTER_TYPE_P (type
))
12010 /* [dcl.fct]/6, parameter types cannot contain pointers
12011 (references) to arrays of unknown bound. */
12012 tree t
= TREE_TYPE (type
);
12013 int ptr
= TYPE_PTR_P (type
);
12017 if (TYPE_PTR_P (t
))
12019 else if (TREE_CODE (t
) != ARRAY_TYPE
)
12021 else if (!TYPE_DOMAIN (t
))
12025 if (TREE_CODE (t
) == ARRAY_TYPE
)
12026 cp_error ("parameter `%D' includes %s to array of unknown bound `%T'",
12027 decl
, ptr
? "pointer" : "reference", t
);
12030 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
12031 if (PROMOTE_PROTOTYPES
12032 && INTEGRAL_TYPE_P (type
)
12033 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
12034 DECL_ARG_TYPE (decl
) = integer_type_node
;
12035 if (!any_error
&& init
)
12036 init
= check_default_argument (decl
, init
);
12041 TREE_CHAIN (decl
) = decls
;
12043 result
= tree_cons (init
, type
, result
);
12045 decls
= nreverse (decls
);
12046 result
= nreverse (result
);
12048 result
= chainon (result
, void_list_node
);
12049 last_function_parms
= decls
;
12055 /* D is a constructor or overloaded `operator='. Returns non-zero if
12056 D's arguments allow it to be a copy constructor, or copy assignment
12065 if (!DECL_FUNCTION_MEMBER_P (d
))
12068 t
= FUNCTION_FIRST_USER_PARMTYPE (d
);
12069 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
12070 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
12071 == DECL_CONTEXT (d
))
12072 && (TREE_CHAIN (t
) == NULL_TREE
12073 || TREE_CHAIN (t
) == void_list_node
12074 || TREE_PURPOSE (TREE_CHAIN (t
))))
12079 /* These memoizing functions keep track of special properties which
12080 a class may have. `grok_ctor_properties' notices whether a class
12081 has a constructor of the form X(X&), and also complains
12082 if the class has a constructor of the form X(X).
12083 `grok_op_properties' takes notice of the various forms of
12084 operator= which are defined, as well as what sorts of type conversion
12085 may apply. Both functions take a FUNCTION_DECL as an argument. */
12088 grok_ctor_properties (ctype
, decl
)
12091 tree parmtypes
= FUNCTION_FIRST_USER_PARMTYPE (decl
);
12092 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
12096 A non-template constructor for class X is a copy constructor if
12097 its first parameter is of type X&, const X&, volatile X& or const
12098 volatile X&, and either there are no other parameters or else all
12099 other parameters have default arguments. */
12100 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
12101 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
12102 && sufficient_parms_p (TREE_CHAIN (parmtypes
))
12103 && !(DECL_TEMPLATE_INSTANTIATION (decl
)
12104 && is_member_template (DECL_TI_TEMPLATE (decl
))))
12106 TYPE_HAS_INIT_REF (ctype
) = 1;
12107 if (CP_TYPE_CONST_P (TREE_TYPE (parmtype
)))
12108 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
12112 A declaration of a constructor for a class X is ill-formed if its
12113 first parameter is of type (optionally cv-qualified) X and either
12114 there are no other parameters or else all other parameters have
12117 We *don't* complain about member template instantiations that
12118 have this form, though; they can occur as we try to decide what
12119 constructor to use during overload resolution. Since overload
12120 resolution will never prefer such a constructor to the
12121 non-template copy constructor (which is either explicitly or
12122 implicitly defined), there's no need to worry about their
12123 existence. Theoretically, they should never even be
12124 instantiated, but that's hard to forestall. */
12125 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
12126 && sufficient_parms_p (TREE_CHAIN (parmtypes
))
12127 && !(DECL_TEMPLATE_INSTANTIATION (decl
)
12128 && is_member_template (DECL_TI_TEMPLATE (decl
))))
12130 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
12132 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
12135 else if (TREE_CODE (parmtype
) == VOID_TYPE
12136 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
12137 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
12142 /* An operator with this code is unary, but can also be binary. */
12146 enum tree_code code
;
12148 return (code
== INDIRECT_REF
12149 || code
== ADDR_EXPR
12150 || code
== CONVERT_EXPR
12151 || code
== NEGATE_EXPR
12152 || code
== PREINCREMENT_EXPR
12153 || code
== PREDECREMENT_EXPR
);
12156 /* An operator with this name can only be unary. */
12160 enum tree_code code
;
12162 return (code
== TRUTH_NOT_EXPR
12163 || code
== BIT_NOT_EXPR
12164 || code
== COMPONENT_REF
12165 || code
== TYPE_EXPR
);
12168 /* Do a little sanity-checking on how they declared their operator. */
12171 grok_op_properties (decl
, virtualp
, friendp
)
12173 int virtualp
, friendp
;
12175 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
12177 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
12178 tree name
= DECL_NAME (decl
);
12179 enum tree_code operator_code
;
12182 /* Count the number of arguments. */
12183 for (argtype
= argtypes
, arity
= 0;
12184 argtype
&& argtype
!= void_list_node
;
12185 argtype
= TREE_CHAIN (argtype
))
12188 if (current_class_type
== NULL_TREE
)
12191 if (DECL_CONV_FN_P (decl
))
12192 operator_code
= TYPE_EXPR
;
12196 #define DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, ASSN_P) \
12197 if (ansi_opname (CODE) == name) \
12199 operator_code = CODE; \
12202 else if (ansi_assopname (CODE) == name) \
12204 operator_code = CODE; \
12205 DECL_ASSIGNMENT_OPERATOR_P (decl) = 1; \
12209 #include "operators.def"
12210 #undef DEF_OPERATOR
12212 my_friendly_abort (20000527);
12215 my_friendly_assert (operator_code
!= LAST_CPLUS_TREE_CODE
, 20000526);
12216 SET_OVERLOADED_OPERATOR_CODE (decl
, operator_code
);
12220 switch (operator_code
)
12223 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
12227 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
12230 case COMPONENT_REF
:
12232 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
12236 TYPE_HAS_NEW_OPERATOR (current_class_type
) = 1;
12240 TYPE_GETS_DELETE (current_class_type
) |= 1;
12244 TYPE_HAS_ARRAY_NEW_OPERATOR (current_class_type
) = 1;
12247 case VEC_DELETE_EXPR
:
12248 TYPE_GETS_DELETE (current_class_type
) |= 2;
12256 if (operator_code
== NEW_EXPR
|| operator_code
== VEC_NEW_EXPR
)
12258 /* When the compiler encounters the definition of A::operator new, it
12259 doesn't look at the class declaration to find out if it's static. */
12261 revert_static_member_fn (decl
);
12263 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
12265 else if (operator_code
== DELETE_EXPR
|| operator_code
== VEC_DELETE_EXPR
)
12268 revert_static_member_fn (decl
);
12270 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
12274 /* An operator function must either be a non-static member function
12275 or have at least one parameter of a class, a reference to a class,
12276 an enumeration, or a reference to an enumeration. 13.4.0.6 */
12277 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
12279 if (operator_code
== TYPE_EXPR
12280 || operator_code
== CALL_EXPR
12281 || operator_code
== COMPONENT_REF
12282 || operator_code
== ARRAY_REF
12283 || operator_code
== NOP_EXPR
)
12284 cp_error ("`%D' must be a nonstatic member function", decl
);
12289 if (DECL_STATIC_FUNCTION_P (decl
))
12290 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
12293 for (; TREE_CODE (TREE_VALUE (p
)) != VOID_TYPE
; p
= TREE_CHAIN (p
))
12295 tree arg
= TREE_VALUE (p
);
12296 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
12297 arg
= TREE_TYPE (arg
);
12299 /* This lets bad template code slip through. */
12300 if (IS_AGGR_TYPE (arg
)
12301 || TREE_CODE (arg
) == ENUMERAL_TYPE
12302 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
12303 || TREE_CODE (arg
) == BOUND_TEMPLATE_TEMPLATE_PARM
)
12307 ("`%D' must have an argument of class or enumerated type",
12314 if (operator_code
== CALL_EXPR
)
12315 return; /* No restrictions on args. */
12317 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
12319 tree t
= TREE_TYPE (name
);
12322 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
12323 const char *what
= 0;
12326 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
12328 if (TREE_CODE (t
) == VOID_TYPE
)
12330 else if (t
== current_class_type
)
12331 what
= "the same type";
12332 /* Don't force t to be complete here. */
12333 else if (IS_AGGR_TYPE (t
)
12334 && COMPLETE_TYPE_P (t
)
12335 && DERIVED_FROM_P (t
, current_class_type
))
12336 what
= "a base class";
12339 warning ("conversion to %s%s will never use a type conversion operator",
12340 ref
? "a reference to " : "", what
);
12344 if (DECL_ASSIGNMENT_OPERATOR_P (decl
)
12345 && operator_code
== NOP_EXPR
)
12349 if (arity
!= 2 && methodp
)
12351 cp_error ("`%D' must take exactly one argument", decl
);
12354 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
12358 A user-declared copy assignment operator X::operator= is
12359 a non-static non-template member function of class X with
12360 exactly one parameter of type X, X&, const X&, volatile
12361 X& or const volatile X&. */
12362 if (copy_assignment_arg_p (parmtype
, virtualp
)
12363 && !(DECL_TEMPLATE_INSTANTIATION (decl
)
12364 && is_member_template (DECL_TI_TEMPLATE (decl
)))
12367 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
12368 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
12369 || CP_TYPE_CONST_P (TREE_TYPE (parmtype
)))
12370 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
12373 else if (operator_code
== COND_EXPR
)
12376 cp_error ("ISO C++ prohibits overloading operator ?:");
12378 else if (ambi_op_p (operator_code
))
12381 /* We pick the one-argument operator codes by default, so
12382 we don't have to change anything. */
12384 else if (arity
== 2)
12386 /* If we thought this was a unary operator, we now know
12387 it to be a binary operator. */
12388 switch (operator_code
)
12391 operator_code
= MULT_EXPR
;
12395 operator_code
= BIT_AND_EXPR
;
12399 operator_code
= PLUS_EXPR
;
12403 operator_code
= MINUS_EXPR
;
12406 case PREINCREMENT_EXPR
:
12407 operator_code
= POSTINCREMENT_EXPR
;
12410 case PREDECREMENT_EXPR
:
12411 operator_code
= POSTDECREMENT_EXPR
;
12415 my_friendly_abort (20000527);
12418 SET_OVERLOADED_OPERATOR_CODE (decl
, operator_code
);
12420 if ((operator_code
== POSTINCREMENT_EXPR
12421 || operator_code
== POSTDECREMENT_EXPR
)
12422 && ! processing_template_decl
12423 && ! same_type_p (TREE_VALUE (TREE_CHAIN (argtypes
)), integer_type_node
))
12426 cp_error ("postfix `%D' must take `int' as its argument",
12430 ("postfix `%D' must take `int' as its second argument",
12437 cp_error ("`%D' must take either zero or one argument", decl
);
12439 cp_error ("`%D' must take either one or two arguments", decl
);
12442 /* More Effective C++ rule 6. */
12444 && (operator_code
== POSTINCREMENT_EXPR
12445 || operator_code
== POSTDECREMENT_EXPR
12446 || operator_code
== PREINCREMENT_EXPR
12447 || operator_code
== PREDECREMENT_EXPR
))
12449 tree arg
= TREE_VALUE (argtypes
);
12450 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
12451 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
12452 arg
= TREE_TYPE (arg
);
12453 arg
= TYPE_MAIN_VARIANT (arg
);
12454 if (operator_code
== PREINCREMENT_EXPR
12455 || operator_code
== PREDECREMENT_EXPR
)
12457 if (TREE_CODE (ret
) != REFERENCE_TYPE
12458 || !same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
12460 cp_warning ("prefix `%D' should return `%T'", decl
,
12461 build_reference_type (arg
));
12465 if (!same_type_p (TYPE_MAIN_VARIANT (ret
), arg
))
12466 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
12470 else if (unary_op_p (operator_code
))
12475 cp_error ("`%D' must take `void'", decl
);
12477 cp_error ("`%D' must take exactly one argument", decl
);
12480 else /* if (binary_op_p (operator_code)) */
12485 cp_error ("`%D' must take exactly one argument", decl
);
12487 cp_error ("`%D' must take exactly two arguments", decl
);
12490 /* More Effective C++ rule 7. */
12492 && (operator_code
== TRUTH_ANDIF_EXPR
12493 || operator_code
== TRUTH_ORIF_EXPR
12494 || operator_code
== COMPOUND_EXPR
))
12495 cp_warning ("user-defined `%D' always evaluates both arguments",
12499 /* Effective C++ rule 23. */
12502 && (operator_code
== PLUS_EXPR
12503 || operator_code
== MINUS_EXPR
12504 || operator_code
== TRUNC_DIV_EXPR
12505 || operator_code
== MULT_EXPR
)
12506 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
12507 cp_warning ("`%D' should return by value", decl
);
12510 for (; argtypes
&& argtypes
!= void_list_node
;
12511 argtypes
= TREE_CHAIN (argtypes
))
12512 if (TREE_PURPOSE (argtypes
))
12514 TREE_PURPOSE (argtypes
) = NULL_TREE
;
12515 if (operator_code
== POSTINCREMENT_EXPR
12516 || operator_code
== POSTDECREMENT_EXPR
)
12519 cp_pedwarn ("`%D' cannot have default arguments", decl
);
12522 cp_error ("`%D' cannot have default arguments", decl
);
12528 static const char *
12530 enum tag_types code
;
12543 my_friendly_abort (981122);
12547 /* Get the struct, enum or union (CODE says which) with tag NAME.
12548 Define the tag as a forward-reference if it is not defined.
12550 C++: If a class derivation is given, process it here, and report
12551 an error if multiple derivation declarations are not identical.
12553 If this is a definition, come in through xref_tag and only look in
12554 the current frame for the name (since C++ allows new names in any
12558 xref_tag (code_type_node
, name
, globalize
)
12559 tree code_type_node
;
12563 enum tag_types tag_code
;
12564 enum tree_code code
;
12565 register tree ref
, t
;
12566 struct binding_level
*b
= current_binding_level
;
12568 tree attributes
= NULL_TREE
;
12569 tree context
= NULL_TREE
;
12571 /* If we are called from the parser, code_type_node will sometimes be a
12572 TREE_LIST. This indicates that the user wrote
12573 "class __attribute__ ((foo)) bar". Extract the attributes so we can
12575 if (TREE_CODE (code_type_node
) == TREE_LIST
)
12577 attributes
= TREE_PURPOSE (code_type_node
);
12578 code_type_node
= TREE_VALUE (code_type_node
);
12581 tag_code
= (enum tag_types
) tree_low_cst (code_type_node
, 1);
12586 code
= RECORD_TYPE
;
12592 code
= ENUMERAL_TYPE
;
12595 my_friendly_abort (18);
12598 /* If a cross reference is requested, look up the type
12599 already defined for this tag and return it. */
12603 name
= TYPE_IDENTIFIER (t
);
12607 t
= IDENTIFIER_TYPE_VALUE (name
);
12609 /* Warn about 'friend struct Inherited;' doing the wrong thing. */
12610 if (t
&& globalize
&& TREE_CODE (t
) == TYPENAME_TYPE
)
12612 static int explained
;
12615 cp_warning ("`%s %T' declares a new type at namespace scope",
12616 tag_name (tag_code
), name
);
12618 cp_warning (" names from dependent base classes are not visible to unqualified name lookup - to refer to the inherited type, say `%s %T::%T'",
12619 tag_name (tag_code
),
12620 constructor_name (current_class_type
),
12621 TYPE_IDENTIFIER (t
));
12623 /* We need to remove the class scope binding for the
12624 TYPENAME_TYPE as otherwise poplevel_class gets confused. */
12625 for (shadowed
= b
->class_shadowed
;
12627 shadowed
= TREE_CHAIN (shadowed
))
12628 if (TREE_TYPE (shadowed
) == TYPE_NAME (t
))
12630 TREE_PURPOSE (shadowed
) = NULL_TREE
;
12635 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
12636 && TREE_CODE (t
) != BOUND_TEMPLATE_TEMPLATE_PARM
)
12641 /* If we know we are defining this tag, only look it up in
12642 this scope and don't try to find it as a type. */
12643 ref
= lookup_tag (code
, name
, b
, 1);
12649 /* [dcl.type.elab] If the identifier resolves to a
12650 typedef-name or a template type-parameter, the
12651 elaborated-type-specifier is ill-formed. */
12652 if (t
!= TYPE_MAIN_VARIANT (t
)
12653 || (CLASS_TYPE_P (t
) && TYPE_WAS_ANONYMOUS (t
)))
12654 cp_pedwarn ("using typedef-name `%D' after `%s'",
12655 TYPE_NAME (t
), tag_name (tag_code
));
12656 else if (TREE_CODE (t
) == TEMPLATE_TYPE_PARM
)
12657 cp_error ("using template type parameter `%T' after `%s'",
12658 t
, tag_name (tag_code
));
12663 ref
= lookup_tag (code
, name
, b
, 0);
12667 /* Try finding it as a type declaration. If that wins,
12669 ref
= lookup_name (name
, 1);
12671 if (ref
!= NULL_TREE
12672 && processing_template_decl
12673 && DECL_CLASS_TEMPLATE_P (ref
)
12674 && template_class_depth (current_class_type
) == 0)
12675 /* Since GLOBALIZE is true, we're declaring a global
12676 template, so we want this type. */
12677 ref
= DECL_TEMPLATE_RESULT (ref
);
12679 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
12680 && TREE_CODE (TREE_TYPE (ref
)) == code
)
12681 ref
= TREE_TYPE (ref
);
12686 if (ref
&& current_class_type
12687 && template_class_depth (current_class_type
)
12688 && PROCESSING_REAL_TEMPLATE_DECL_P ())
12690 /* Since GLOBALIZE is non-zero, we are not looking at a
12691 definition of this tag. Since, in addition, we are currently
12692 processing a (member) template declaration of a template
12693 class, we must be very careful; consider:
12700 { template <class V>
12701 friend struct S1; };
12703 Here, the S2::S1 declaration should not be confused with the
12704 outer declaration. In particular, the inner version should
12705 have a template parameter of level 2, not level 1. This
12706 would be particularly important if the member declaration
12709 template <class V = U> friend struct S1;
12711 say, when we should tsubst into `U' when instantiating
12712 S2. On the other hand, when presented with:
12722 we must find the inner binding eventually. We
12723 accomplish this by making sure that the new type we
12724 create to represent this declaration has the right
12726 context
= TYPE_CONTEXT (ref
);
12733 /* If no such tag is yet defined, create a forward-reference node
12734 and record it as the "definition".
12735 When a real declaration of this type is found,
12736 the forward-reference will be altered into a real type. */
12737 if (code
== ENUMERAL_TYPE
)
12739 cp_error ("use of enum `%#D' without previous declaration", name
);
12741 ref
= make_node (ENUMERAL_TYPE
);
12743 /* Give the type a default layout like unsigned int
12744 to avoid crashing if it does not get defined. */
12745 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
12746 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
12747 TYPE_USER_ALIGN (ref
) = 0;
12748 TREE_UNSIGNED (ref
) = 1;
12749 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
12750 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
12751 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
12753 /* Enable us to recognize when a type is created in class context.
12754 To do nested classes correctly, this should probably be cleared
12755 out when we leave this classes scope. Currently this in only
12756 done in `start_enum'. */
12758 pushtag (name
, ref
, globalize
);
12762 struct binding_level
*old_b
= class_binding_level
;
12764 ref
= make_aggr_type (code
);
12765 TYPE_CONTEXT (ref
) = context
;
12767 #ifdef NONNESTED_CLASSES
12768 /* Class types don't nest the way enums do. */
12769 class_binding_level
= (struct binding_level
*)0;
12771 pushtag (name
, ref
, globalize
);
12772 class_binding_level
= old_b
;
12777 if (!globalize
&& processing_template_decl
&& IS_AGGR_TYPE (ref
))
12778 redeclare_class_template (ref
, current_template_parms
);
12781 /* Until the type is defined, tentatively accept whatever
12782 structure tag the user hands us. */
12783 if (!COMPLETE_TYPE_P (ref
)
12784 && ref
!= current_class_type
12785 /* Have to check this, in case we have contradictory tag info. */
12786 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
12788 if (tag_code
== class_type
)
12789 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
12790 else if (tag_code
== record_type
)
12791 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
12794 TREE_TYPE (ref
) = attributes
;
12800 xref_tag_from_type (old
, id
, globalize
)
12804 tree code_type_node
;
12806 if (TREE_CODE (old
) == RECORD_TYPE
)
12807 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
12808 ? class_type_node
: record_type_node
);
12810 code_type_node
= union_type_node
;
12812 if (id
== NULL_TREE
)
12813 id
= TYPE_IDENTIFIER (old
);
12815 return xref_tag (code_type_node
, id
, globalize
);
12818 /* REF is a type (named NAME), for which we have just seen some
12819 baseclasses. BINFO is a list of those baseclasses; the
12820 TREE_PURPOSE is an access_* node, and the TREE_VALUE is the type of
12821 the base-class. CODE_TYPE_NODE indicates whether REF is a class,
12822 struct, or union. */
12825 xref_basetypes (code_type_node
, name
, ref
, binfo
)
12826 tree code_type_node
;
12830 /* In the declaration `A : X, Y, ... Z' we mark all the types
12831 (A, X, Y, ..., Z) so we can check for duplicates. */
12836 enum tag_types tag_code
;
12838 /* If we are called from the parser, code_type_node will sometimes be a
12839 TREE_LIST. This indicates that the user wrote
12840 "class __attribute__ ((foo)) bar". Extract the attributes so that
12841 tree_low_cst doesn't crash. */
12842 if (TREE_CODE (code_type_node
) == TREE_LIST
)
12843 code_type_node
= TREE_VALUE (code_type_node
);
12845 tag_code
= (enum tag_types
) tree_low_cst (code_type_node
, 1);
12847 if (tag_code
== union_type
)
12849 cp_error ("derived union `%T' invalid", ref
);
12853 len
= list_length (binfo
);
12855 /* First, make sure that any templates in base-classes are
12856 instantiated. This ensures that if we call ourselves recursively
12857 we do not get confused about which classes are marked and which
12859 for (base
= binfo
; base
; base
= TREE_CHAIN (base
))
12860 complete_type (TREE_VALUE (base
));
12862 SET_CLASSTYPE_MARKED (ref
);
12863 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
12865 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
12867 /* The base of a derived struct is public by default. */
12869 = (TREE_PURPOSE (binfo
) == access_public_node
12870 || TREE_PURPOSE (binfo
) == access_public_virtual_node
12871 || (tag_code
!= class_type
12872 && (TREE_PURPOSE (binfo
) == access_default_node
12873 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
12875 = (TREE_PURPOSE (binfo
) == access_protected_node
12876 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
);
12878 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
12879 || TREE_PURPOSE (binfo
) == access_protected_virtual_node
12880 || TREE_PURPOSE (binfo
) == access_public_virtual_node
12881 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
12882 tree basetype
= TREE_VALUE (binfo
);
12885 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
12886 basetype
= TREE_TYPE (basetype
);
12888 || (TREE_CODE (basetype
) != RECORD_TYPE
12889 && TREE_CODE (basetype
) != TYPENAME_TYPE
12890 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
12891 && TREE_CODE (basetype
) != BOUND_TEMPLATE_TEMPLATE_PARM
))
12893 cp_error ("base type `%T' fails to be a struct or class type",
12894 TREE_VALUE (binfo
));
12898 GNU_xref_hier (name
, basetype
, via_public
, via_virtual
, 0);
12900 /* This code replaces similar code in layout_basetypes.
12901 We put the complete_type first for implicit `typename'. */
12902 if (!COMPLETE_TYPE_P (basetype
)
12903 && ! (current_template_parms
&& uses_template_parms (basetype
)))
12905 cp_error ("base class `%T' has incomplete type", basetype
);
12910 if (CLASSTYPE_MARKED (basetype
))
12912 if (basetype
== ref
)
12913 cp_error ("recursive type `%T' undefined", basetype
);
12915 cp_error ("duplicate base type `%T' invalid", basetype
);
12919 if (TYPE_FOR_JAVA (basetype
)
12920 && (current_lang_depth () == 0))
12921 TYPE_FOR_JAVA (ref
) = 1;
12923 /* Note that the BINFO records which describe individual
12924 inheritances are *not* shared in the lattice! They
12925 cannot be shared because a given baseclass may be
12926 inherited with different `accessibility' by different
12927 derived classes. (Each BINFO record describing an
12928 individual inheritance contains flags which say what
12929 the `accessibility' of that particular inheritance is.) */
12932 = make_binfo (size_zero_node
, basetype
,
12933 CLASS_TYPE_P (basetype
)
12934 ? TYPE_BINFO_VTABLE (basetype
) : NULL_TREE
,
12935 CLASS_TYPE_P (basetype
)
12936 ? TYPE_BINFO_VIRTUALS (basetype
) : NULL_TREE
);
12938 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
12939 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
12940 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
12941 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
12942 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
12944 /* We need to unshare the binfos now so that lookups during class
12945 definition work. */
12946 unshare_base_binfos (base_binfo
);
12948 SET_CLASSTYPE_MARKED (basetype
);
12950 /* We are free to modify these bits because they are meaningless
12951 at top level, and BASETYPE is a top-level type. */
12952 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
12954 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
12955 /* Converting to a virtual base class requires looking
12956 up the offset of the virtual base. */
12957 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref
) = 1;
12960 if (CLASS_TYPE_P (basetype
))
12962 TYPE_HAS_NEW_OPERATOR (ref
)
12963 |= TYPE_HAS_NEW_OPERATOR (basetype
);
12964 TYPE_HAS_ARRAY_NEW_OPERATOR (ref
)
12965 |= TYPE_HAS_ARRAY_NEW_OPERATOR (basetype
);
12966 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
12967 /* If the base-class uses multiple inheritance, so do we. */
12968 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
12969 |= TYPE_USES_MULTIPLE_INHERITANCE (basetype
);
12970 /* Likewise, if converting to a base of the base may require
12971 code, then we may need to generate code to convert to a
12973 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref
)
12974 |= TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (basetype
);
12981 TREE_VEC_LENGTH (binfos
) = i
;
12983 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
12987 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
12988 /* If there is more than one non-empty they cannot be at the same
12990 TYPE_BASE_CONVS_MAY_REQUIRE_CODE_P (ref
) = 1;
12993 /* Unmark all the types. */
12995 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
12996 CLEAR_CLASSTYPE_MARKED (ref
);
12998 /* Now that we know all the base-classes, set up the list of virtual
13000 get_vbase_types (ref
);
13004 /* Begin compiling the definition of an enumeration type.
13005 NAME is its name (or null if anonymous).
13006 Returns the type object, as yet incomplete.
13007 Also records info about it so that build_enumerator
13008 may be used to declare the individual values as they are read. */
13014 register tree enumtype
= NULL_TREE
;
13015 struct binding_level
*b
= current_binding_level
;
13017 /* If this is the real definition for a previous forward reference,
13018 fill in the contents in the same object that used to be the
13019 forward reference. */
13021 if (name
!= NULL_TREE
)
13022 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
13024 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
13026 cp_error ("multiple definition of `%#T'", enumtype
);
13027 cp_error_at ("previous definition here", enumtype
);
13028 /* Clear out TYPE_VALUES, and start again. */
13029 TYPE_VALUES (enumtype
) = NULL_TREE
;
13033 enumtype
= make_node (ENUMERAL_TYPE
);
13034 pushtag (name
, enumtype
, 0);
13037 if (current_class_type
)
13038 TREE_ADDRESSABLE (b
->tags
) = 1;
13040 GNU_xref_decl (current_function_decl
, enumtype
);
13044 /* After processing and defining all the values of an enumeration type,
13045 install their decls in the enumeration type and finish it off.
13046 ENUMTYPE is the type object and VALUES a list of name-value pairs. */
13049 finish_enum (enumtype
)
13061 /* We built up the VALUES in reverse order. */
13062 TYPE_VALUES (enumtype
) = nreverse (TYPE_VALUES (enumtype
));
13066 Following the closing brace of an enum-specifier, each
13067 enumerator has the type of its enumeration. Prior to the
13068 closing brace, the type of each enumerator is the type of
13069 its initializing value. */
13070 for (pair
= TYPE_VALUES (enumtype
); pair
; pair
= TREE_CHAIN (pair
))
13071 TREE_TYPE (TREE_VALUE (pair
)) = enumtype
;
13073 /* For a enum defined in a template, all further processing is
13074 postponed until the template is instantiated. */
13075 if (processing_template_decl
)
13077 tree scope
= current_scope ();
13078 if (scope
&& TREE_CODE (scope
) == FUNCTION_DECL
)
13079 add_stmt (build_min (TAG_DEFN
, enumtype
));
13085 /* Figure out what the minimum and maximum values of the enumerators
13087 if (TYPE_VALUES (enumtype
))
13089 minnode
= maxnode
= NULL_TREE
;
13091 for (pair
= TYPE_VALUES (enumtype
);
13093 pair
= TREE_CHAIN (pair
))
13097 value
= DECL_INITIAL (TREE_VALUE (pair
));
13100 minnode
= maxnode
= value
;
13101 else if (tree_int_cst_lt (maxnode
, value
))
13103 else if (tree_int_cst_lt (value
, minnode
))
13108 minnode
= maxnode
= integer_zero_node
;
13110 /* Compute the number of bits require to represent all values of the
13111 enumeration. We must do this before the type of MINNODE and
13112 MAXNODE are transformed, since min_precision relies on the
13113 TREE_TYPE of the value it is passed. */
13114 unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
13115 lowprec
= min_precision (minnode
, unsignedp
);
13116 highprec
= min_precision (maxnode
, unsignedp
);
13117 precision
= MAX (lowprec
, highprec
);
13119 /* Set the TREE_TYPE for the values as well. That's so that when we
13120 call decl_constant_value we get an entity of the right type (but
13121 with the constant value). In addition, transform the TYPE_VALUES
13122 list to contain the values, rather than the CONST_DECLs for them. */
13123 for (pair
= TYPE_VALUES (enumtype
); pair
; pair
= TREE_CHAIN (pair
))
13125 tree value
= DECL_INITIAL (TREE_VALUE (pair
));
13127 TREE_TYPE (value
) = enumtype
;
13128 TREE_VALUE (pair
) = value
;
13131 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
13132 TYPE_SIZE (enumtype
) = NULL_TREE
;
13133 TYPE_PRECISION (enumtype
) = precision
;
13135 fixup_unsigned_type (enumtype
);
13137 fixup_signed_type (enumtype
);
13139 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
13140 /* Use the width of the narrowest normal C type which is wide
13142 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
13145 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
13147 TYPE_SIZE (enumtype
) = NULL_TREE
;
13148 layout_type (enumtype
);
13150 /* Fix up all variant types of this enum type. */
13151 for (t
= TYPE_MAIN_VARIANT (enumtype
); t
; t
= TYPE_NEXT_VARIANT (t
))
13153 TYPE_VALUES (t
) = TYPE_VALUES (enumtype
);
13154 TYPE_MIN_VALUE (t
) = TYPE_MIN_VALUE (enumtype
);
13155 TYPE_MAX_VALUE (t
) = TYPE_MAX_VALUE (enumtype
);
13156 TYPE_SIZE (t
) = TYPE_SIZE (enumtype
);
13157 TYPE_SIZE_UNIT (t
) = TYPE_SIZE_UNIT (enumtype
);
13158 TYPE_MODE (t
) = TYPE_MODE (enumtype
);
13159 TYPE_PRECISION (t
) = TYPE_PRECISION (enumtype
);
13160 TYPE_ALIGN (t
) = TYPE_ALIGN (enumtype
);
13161 TYPE_USER_ALIGN (t
) = TYPE_USER_ALIGN (enumtype
);
13162 TREE_UNSIGNED (t
) = TREE_UNSIGNED (enumtype
);
13165 /* Finish debugging output for this type. */
13166 rest_of_type_compilation (enumtype
, namespace_bindings_p ());
13169 /* Build and install a CONST_DECL for an enumeration constant of the
13170 enumeration type ENUMTYPE whose NAME and VALUE (if any) are provided.
13171 Assignment of sequential values by default is handled here. */
13174 build_enumerator (name
, value
, enumtype
)
13184 /* Remove no-op casts from the value. */
13186 STRIP_TYPE_NOPS (value
);
13188 if (! processing_template_decl
)
13190 /* Validate and default VALUE. */
13191 if (value
!= NULL_TREE
)
13193 value
= decl_constant_value (value
);
13195 if (TREE_CODE (value
) == INTEGER_CST
)
13197 value
= default_conversion (value
);
13198 constant_expression_warning (value
);
13202 cp_error ("enumerator value for `%D' not integer constant", name
);
13207 /* Default based on previous value. */
13208 if (value
== NULL_TREE
&& ! processing_template_decl
)
13212 if (TYPE_VALUES (enumtype
))
13214 /* The next value is the previous value ... */
13215 prev_value
= DECL_INITIAL (TREE_VALUE (TYPE_VALUES (enumtype
)));
13216 /* ... plus one. */
13217 value
= cp_build_binary_op (PLUS_EXPR
,
13221 if (tree_int_cst_lt (value
, prev_value
))
13222 cp_error ("overflow in enumeration values at `%D'", name
);
13225 value
= integer_zero_node
;
13228 /* Remove no-op casts from the value. */
13230 STRIP_TYPE_NOPS (value
);
13232 /* To fix MAX_VAL enum consts. (bkoz) */
13233 TREE_TYPE (value
) = integer_type_node
;
13237 /* We always have to copy here; not all INTEGER_CSTs are unshared.
13238 Even in other cases, we will later (in finish_enum) be setting
13239 the type of VALUE. But, we don't need to make a copy if this
13240 VALUE is one of the enumeration constants for this same
13241 enumeration type. */
13242 for (values
= TYPE_VALUES (enumtype
); values
; values
= TREE_CHAIN (values
))
13243 if (TREE_VALUE (values
) == value
)
13245 /* If we didn't break out of the loop, then we do need a copy. */
13246 if (!values
&& value
)
13247 value
= copy_node (value
);
13249 /* C++ associates enums with global, function, or class declarations. */
13250 context
= current_scope ();
13252 /* Build the actual enumeration constant. Note that the enumeration
13253 constants have the type of their initializers until the
13254 enumeration is complete:
13258 Following the closing brace of an enum-specifier, each enumer-
13259 ator has the type of its enumeration. Prior to the closing
13260 brace, the type of each enumerator is the type of its
13261 initializing value.
13263 In finish_enum we will reset the type. Of course, if we're
13264 processing a template, there may be no value. */
13265 type
= value
? TREE_TYPE (value
) : NULL_TREE
;
13267 if (context
&& context
== current_class_type
)
13268 /* This enum declaration is local to the class. We need the full
13269 lang_decl so that we can record DECL_CLASS_CONTEXT, for example. */
13270 decl
= build_lang_decl (CONST_DECL
, name
, type
);
13272 /* It's a global enum, or it's local to a function. (Note local to
13273 a function could mean local to a class method. */
13274 decl
= build_decl (CONST_DECL
, name
, type
);
13276 DECL_CONTEXT (decl
) = FROB_CONTEXT (context
);
13277 DECL_INITIAL (decl
) = value
;
13278 TREE_READONLY (decl
) = 1;
13280 if (context
&& context
== current_class_type
)
13281 /* In something like `struct S { enum E { i = 7 }; };' we put `i'
13282 on the TYPE_FIELDS list for `S'. (That's so that you can say
13283 things like `S::i' later.) */
13284 finish_member_declaration (decl
);
13288 GNU_xref_decl (current_function_decl
, decl
);
13291 /* Add this enumeration constant to the list for this type. */
13292 TYPE_VALUES (enumtype
) = tree_cons (name
, decl
, TYPE_VALUES (enumtype
));
13296 /* We're defining DECL. Make sure that it's type is OK. */
13299 check_function_type (decl
, current_function_parms
)
13301 tree current_function_parms
;
13303 tree fntype
= TREE_TYPE (decl
);
13304 tree return_type
= complete_type (TREE_TYPE (fntype
));
13306 /* In a function definition, arg types must be complete. */
13307 require_complete_types_for_parms (current_function_parms
);
13309 if (!COMPLETE_OR_VOID_TYPE_P (return_type
))
13311 cp_error ("return type `%#T' is incomplete", TREE_TYPE (fntype
));
13313 /* Make it return void instead, but don't change the
13314 type of the DECL_RESULT, in case we have a named return value. */
13315 if (TREE_CODE (fntype
) == METHOD_TYPE
)
13317 tree ctype
= TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (fntype
)));
13319 = build_cplus_method_type (ctype
,
13321 FUNCTION_ARG_CHAIN (decl
));
13325 = build_function_type (void_type_node
,
13326 TYPE_ARG_TYPES (TREE_TYPE (decl
)));
13328 = build_exception_variant (fntype
,
13329 TYPE_RAISES_EXCEPTIONS (fntype
));
13332 abstract_virtuals_error (decl
, TREE_TYPE (fntype
));
13335 /* Create the FUNCTION_DECL for a function definition.
13336 DECLSPECS and DECLARATOR are the parts of the declaration;
13337 they describe the function's name and the type it returns,
13338 but twisted together in a fashion that parallels the syntax of C.
13340 FLAGS is a bitwise or of SF_PRE_PARSED (indicating that the
13341 DECLARATOR is really the DECL for the function we are about to
13342 process and that DECLSPECS should be ignored), SF_INCLASS_INLINE
13343 indicating that the function is an inline defined in-class.
13345 This function creates a binding context for the function body
13346 as well as setting up the FUNCTION_DECL in current_function_decl.
13348 Returns 1 on success. If the DECLARATOR is not suitable for a function
13349 (it defines a datum instead), we return 0, which tells
13350 yyparse to report a parse error.
13352 For C++, we must first check whether that datum makes any sense.
13353 For example, "class A local_a(1,2);" means that variable local_a
13354 is an aggregate of type A, which should have a constructor
13355 applied to it with the argument list [1, 2]. */
13358 start_function (declspecs
, declarator
, attrs
, flags
)
13359 tree declspecs
, declarator
, attrs
;
13363 tree ctype
= NULL_TREE
;
13366 extern int have_extern_spec
;
13367 extern int used_extern_spec
;
13368 int doing_friend
= 0;
13369 struct binding_level
*bl
;
13370 tree current_function_parms
;
13372 /* Sanity check. */
13373 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node
)) == VOID_TYPE
, 160);
13374 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
13376 /* This should only be done once on the top most decl. */
13377 if (have_extern_spec
&& !used_extern_spec
)
13379 declspecs
= tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
13380 used_extern_spec
= 1;
13383 if (flags
& SF_PRE_PARSED
)
13385 decl1
= declarator
;
13387 fntype
= TREE_TYPE (decl1
);
13388 if (TREE_CODE (fntype
) == METHOD_TYPE
)
13389 ctype
= TYPE_METHOD_BASETYPE (fntype
);
13391 /* ISO C++ 11.4/5. A friend function defined in a class is in
13392 the (lexical) scope of the class in which it is defined. */
13393 if (!ctype
&& DECL_FRIEND_P (decl1
))
13395 ctype
= DECL_FRIEND_CONTEXT (decl1
);
13397 /* CTYPE could be null here if we're dealing with a template;
13398 for example, `inline friend float foo()' inside a template
13399 will have no CTYPE set. */
13400 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
13406 last_function_parms
= DECL_ARGUMENTS (decl1
);
13410 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL
);
13411 /* If the declarator is not suitable for a function definition,
13412 cause a syntax error. */
13413 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
13415 fntype
= TREE_TYPE (decl1
);
13417 restype
= TREE_TYPE (fntype
);
13418 if (CLASS_TYPE_P (restype
) && !CLASSTYPE_GOT_SEMICOLON (restype
))
13420 cp_error ("semicolon missing after declaration of `%#T'", restype
);
13421 shadow_tag (build_tree_list (NULL_TREE
, restype
));
13422 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
13423 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
13424 fntype
= build_function_type (integer_type_node
,
13425 TYPE_ARG_TYPES (fntype
));
13427 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
13429 TYPE_ARG_TYPES (fntype
));
13430 TREE_TYPE (decl1
) = fntype
;
13433 if (TREE_CODE (fntype
) == METHOD_TYPE
)
13434 ctype
= TYPE_METHOD_BASETYPE (fntype
);
13435 else if (DECL_MAIN_P (decl1
))
13437 /* If this doesn't return integer_type, complain. */
13438 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
13440 if (pedantic
|| warn_return_type
)
13441 pedwarn ("return type for `main' changed to `int'");
13442 TREE_TYPE (decl1
) = fntype
= default_function_type
;
13447 if (DECL_DECLARED_INLINE_P (decl1
)
13448 && lookup_attribute ("noinline", attrs
))
13449 warning_with_decl (decl1
,
13450 "inline function `%s' given attribute noinline");
13452 if (DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (decl1
))
13453 /* This is a constructor, we must ensure that any default args
13454 introduced by this definition are propagated to the clones
13455 now. The clones are used directly in overload resolution. */
13456 adjust_clone_args (decl1
);
13458 /* Sometimes we don't notice that a function is a static member, and
13459 build a METHOD_TYPE for it. Fix that up now. */
13460 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
)
13461 && TREE_CODE (TREE_TYPE (decl1
)) == METHOD_TYPE
)
13463 revert_static_member_fn (decl1
);
13464 last_function_parms
= TREE_CHAIN (last_function_parms
);
13468 /* Warn if function was previously implicitly declared
13469 (but not if we warned then). */
13470 if (! warn_implicit
13471 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
13472 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
13474 /* Set up current_class_type, and enter the scope of the class, if
13477 push_nested_class (ctype
, 1);
13478 else if (DECL_STATIC_FUNCTION_P (decl1
))
13479 push_nested_class (DECL_CONTEXT (decl1
), 2);
13481 /* Now that we have entered the scope of the class, we must restore
13482 the bindings for any template parameters surrounding DECL1, if it
13483 is an inline member template. (Order is important; consider the
13484 case where a template parameter has the same name as a field of
13485 the class.) It is not until after this point that
13486 PROCESSING_TEMPLATE_DECL is guaranteed to be set up correctly. */
13487 if (flags
& SF_INCLASS_INLINE
)
13488 maybe_begin_member_template_processing (decl1
);
13490 /* Effective C++ rule 15. */
13492 && DECL_OVERLOADED_OPERATOR_P (decl1
) == NOP_EXPR
13493 && TREE_CODE (TREE_TYPE (fntype
)) == VOID_TYPE
)
13494 cp_warning ("`operator=' should return a reference to `*this'");
13496 /* Make the init_value nonzero so pushdecl knows this is not tentative.
13497 error_mark_node is replaced below (in poplevel) with the BLOCK. */
13498 if (!DECL_INITIAL (decl1
))
13499 DECL_INITIAL (decl1
) = error_mark_node
;
13501 /* This function exists in static storage.
13502 (This does not mean `static' in the C sense!) */
13503 TREE_STATIC (decl1
) = 1;
13505 /* We must call push_template_decl after current_class_type is set
13506 up. (If we are processing inline definitions after exiting a
13507 class scope, current_class_type will be NULL_TREE until set above
13508 by push_nested_class.) */
13509 if (processing_template_decl
)
13510 decl1
= push_template_decl (decl1
);
13512 /* We are now in the scope of the function being defined. */
13513 current_function_decl
= decl1
;
13515 /* Save the parm names or decls from this function's declarator
13516 where store_parm_decls will find them. */
13517 current_function_parms
= last_function_parms
;
13519 /* Make sure the parameter and return types are reasonable. When
13520 you declare a function, these types can be incomplete, but they
13521 must be complete when you define the function. */
13522 if (! processing_template_decl
)
13523 check_function_type (decl1
, current_function_parms
);
13525 /* Build the return declaration for the function. */
13526 restype
= TREE_TYPE (fntype
);
13527 if (!processing_template_decl
)
13529 if (!DECL_RESULT (decl1
))
13531 DECL_RESULT (decl1
)
13532 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
13533 c_apply_type_quals_to_decl (cp_type_quals (restype
),
13534 DECL_RESULT (decl1
));
13538 /* Just use `void'. Nobody will ever look at this anyhow. */
13539 DECL_RESULT (decl1
) = build_decl (RESULT_DECL
, 0, void_type_node
);
13541 /* Initialize RTL machinery. We cannot do this until
13542 CURRENT_FUNCTION_DECL and DECL_RESULT are set up. We do this
13543 even when processing a template; this is how we get
13544 CFUN set up, and our per-function variables initialized.
13545 FIXME factor out the non-RTL stuff. */
13546 bl
= current_binding_level
;
13547 init_function_start (decl1
, input_filename
, lineno
);
13548 current_binding_level
= bl
;
13550 /* Even though we're inside a function body, we still don't want to
13551 call expand_expr to calculate the size of a variable-sized array.
13552 We haven't necessarily assigned RTL to all variables yet, so it's
13553 not safe to try to expand expressions involving them. */
13554 immediate_size_expand
= 0;
13555 cfun
->x_dont_save_pending_sizes_p
= 1;
13557 /* Start the statement-tree, start the tree now. */
13558 begin_stmt_tree (&DECL_SAVED_TREE (decl1
));
13560 /* Let the user know we're compiling this function. */
13561 announce_function (decl1
);
13563 /* Record the decl so that the function name is defined.
13564 If we already have a decl for this name, and it is a FUNCTION_DECL,
13565 use the old decl. */
13566 if (!processing_template_decl
&& !(flags
& SF_PRE_PARSED
))
13568 /* A specialization is not used to guide overload resolution. */
13569 if (!DECL_TEMPLATE_SPECIALIZATION (decl1
)
13570 && ! DECL_FUNCTION_MEMBER_P (decl1
))
13571 decl1
= pushdecl (decl1
);
13574 /* We need to set the DECL_CONTEXT. */
13575 if (!DECL_CONTEXT (decl1
) && DECL_TEMPLATE_INFO (decl1
))
13576 DECL_CONTEXT (decl1
) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1
));
13577 /* And make sure we have enough default args. */
13578 check_default_args (decl1
);
13580 fntype
= TREE_TYPE (decl1
);
13583 /* Reset these in case the call to pushdecl changed them. */
13584 current_function_decl
= decl1
;
13585 cfun
->decl
= decl1
;
13587 /* If we are (erroneously) defining a function that we have already
13588 defined before, wipe out what we knew before. */
13589 if (!DECL_PENDING_INLINE_P (decl1
)
13590 && DECL_SAVED_FUNCTION_DATA (decl1
))
13592 free (DECL_SAVED_FUNCTION_DATA (decl1
));
13593 DECL_SAVED_FUNCTION_DATA (decl1
) = NULL
;
13596 if (ctype
&& !doing_friend
&& !DECL_STATIC_FUNCTION_P (decl1
))
13598 /* We know that this was set up by `grokclassfn'. We do not
13599 wait until `store_parm_decls', since evil parse errors may
13600 never get us to that point. Here we keep the consistency
13601 between `current_class_type' and `current_class_ptr'. */
13602 tree t
= DECL_ARGUMENTS (decl1
);
13604 my_friendly_assert (t
!= NULL_TREE
&& TREE_CODE (t
) == PARM_DECL
,
13606 my_friendly_assert (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
,
13609 cp_function_chain
->x_current_class_ref
13610 = build_indirect_ref (t
, NULL
);
13611 cp_function_chain
->x_current_class_ptr
= t
;
13613 /* Constructors and destructors need to know whether they're "in
13614 charge" of initializing virtual base classes. */
13615 t
= TREE_CHAIN (t
);
13616 if (DECL_HAS_IN_CHARGE_PARM_P (decl1
))
13618 current_in_charge_parm
= t
;
13619 t
= TREE_CHAIN (t
);
13621 if (DECL_HAS_VTT_PARM_P (decl1
))
13623 if (DECL_NAME (t
) != vtt_parm_identifier
)
13625 current_vtt_parm
= t
;
13629 if (DECL_INTERFACE_KNOWN (decl1
))
13631 tree ctx
= decl_function_context (decl1
);
13633 if (DECL_NOT_REALLY_EXTERN (decl1
))
13634 DECL_EXTERNAL (decl1
) = 0;
13636 if (ctx
!= NULL_TREE
&& DECL_DECLARED_INLINE_P (ctx
)
13637 && TREE_PUBLIC (ctx
))
13638 /* This is a function in a local class in an extern inline
13640 comdat_linkage (decl1
);
13642 /* If this function belongs to an interface, it is public.
13643 If it belongs to someone else's interface, it is also external.
13644 This only affects inlines and template instantiations. */
13645 else if (interface_unknown
== 0
13646 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
13647 || flag_alt_external_templates
))
13649 if (DECL_DECLARED_INLINE_P (decl1
)
13650 || DECL_TEMPLATE_INSTANTIATION (decl1
)
13651 || processing_template_decl
)
13653 DECL_EXTERNAL (decl1
)
13655 || (DECL_DECLARED_INLINE_P (decl1
)
13656 && ! flag_implement_inlines
13657 && !DECL_VINDEX (decl1
)));
13659 /* For WIN32 we also want to put these in linkonce sections. */
13660 maybe_make_one_only (decl1
);
13663 DECL_EXTERNAL (decl1
) = 0;
13664 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
13665 DECL_INTERFACE_KNOWN (decl1
) = 1;
13667 else if (interface_unknown
&& interface_only
13668 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
13669 || flag_alt_external_templates
))
13671 /* If MULTIPLE_SYMBOL_SPACES is defined and we saw a #pragma
13672 interface, we will have interface_only set but not
13673 interface_known. In that case, we don't want to use the normal
13674 heuristics because someone will supply a #pragma implementation
13675 elsewhere, and deducing it here would produce a conflict. */
13676 comdat_linkage (decl1
);
13677 DECL_EXTERNAL (decl1
) = 0;
13678 DECL_INTERFACE_KNOWN (decl1
) = 1;
13679 DECL_DEFER_OUTPUT (decl1
) = 1;
13683 /* This is a definition, not a reference.
13684 So clear DECL_EXTERNAL. */
13685 DECL_EXTERNAL (decl1
) = 0;
13687 if ((DECL_DECLARED_INLINE_P (decl1
)
13688 || DECL_TEMPLATE_INSTANTIATION (decl1
))
13689 && ! DECL_INTERFACE_KNOWN (decl1
)
13690 /* Don't try to defer nested functions for now. */
13691 && ! decl_function_context (decl1
))
13692 DECL_DEFER_OUTPUT (decl1
) = 1;
13694 DECL_INTERFACE_KNOWN (decl1
) = 1;
13698 current_binding_level
->parm_flag
= 1;
13700 cplus_decl_attributes (&decl1
, attrs
, 0);
13702 /* Promote the value to int before returning it. */
13703 if (c_promoting_integer_type_p (restype
))
13704 restype
= type_promotes_to (restype
);
13706 if (DECL_RESULT (decl1
) == NULL_TREE
)
13708 DECL_RESULT (decl1
)
13709 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
13710 TREE_READONLY (DECL_RESULT (decl1
)) = CP_TYPE_CONST_P (restype
);
13711 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = CP_TYPE_VOLATILE_P (restype
);
13716 if (DECL_DESTRUCTOR_P (decl1
))
13718 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
13719 DECL_CONTEXT (dtor_label
) = current_function_decl
;
13722 start_fname_decls ();
13724 store_parm_decls (current_function_parms
);
13729 /* Store the parameter declarations into the current function declaration.
13730 This is called after parsing the parameter declarations, before
13731 digesting the body of the function.
13733 Also install to binding contour return value identifier, if any. */
13736 store_parm_decls (current_function_parms
)
13737 tree current_function_parms
;
13739 register tree fndecl
= current_function_decl
;
13740 register tree parm
;
13741 int parms_have_cleanups
= 0;
13742 tree cleanups
= NULL_TREE
;
13744 /* This is a chain of any other decls that came in among the parm
13745 declarations. If a parm is declared with enum {foo, bar} x;
13746 then CONST_DECLs for foo and bar are put here. */
13747 tree nonparms
= NULL_TREE
;
13749 if (current_function_parms
)
13751 /* This case is when the function was defined with an ANSI prototype.
13752 The parms already have decls, so we need not do anything here
13753 except record them as in effect
13754 and complain if any redundant old-style parm decls were written. */
13756 tree specparms
= current_function_parms
;
13759 /* Must clear this because it might contain TYPE_DECLs declared
13761 storedecls (NULL_TREE
);
13763 /* If we're doing semantic analysis, then we'll call pushdecl
13764 for each of these. We must do them in reverse order so that
13765 they end in the correct forward order. */
13766 specparms
= nreverse (specparms
);
13768 for (parm
= specparms
; parm
; parm
= next
)
13770 next
= TREE_CHAIN (parm
);
13771 if (TREE_CODE (parm
) == PARM_DECL
)
13775 if (DECL_NAME (parm
) == NULL_TREE
13776 || TREE_CODE (parm
) != VOID_TYPE
)
13779 cp_error ("parameter `%D' declared void", parm
);
13781 cleanup
= (processing_template_decl
13783 : maybe_build_cleanup (parm
));
13786 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
13790 /* If we find an enum constant or a type tag,
13791 put it aside for the moment. */
13792 TREE_CHAIN (parm
) = NULL_TREE
;
13793 nonparms
= chainon (nonparms
, parm
);
13797 /* Get the decls in their original chain order and record in the
13798 function. This is all and only the PARM_DECLs that were
13799 pushed into scope by the loop above. */
13800 DECL_ARGUMENTS (fndecl
) = getdecls ();
13801 storetags (gettags ());
13804 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
13806 /* Now store the final chain of decls for the arguments
13807 as the decl-chain of the current lexical scope.
13808 Put the enumerators in as well, at the front so that
13809 DECL_ARGUMENTS is not modified. */
13810 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
13812 /* Now that we have initialized the parms, we can start their
13813 cleanups. We cannot do this before, since expand_decl_cleanup
13814 should not be called before the parm can be used. */
13817 finish_decl_cleanup (TREE_PURPOSE (cleanups
),
13818 TREE_VALUE (cleanups
));
13819 cleanups
= TREE_CHAIN (cleanups
);
13822 /* Create a binding contour which can be used to catch
13823 cleanup-generated temporaries. */
13824 if (parms_have_cleanups
)
13827 /* Do the starting of the exception specifications, if we have any. */
13828 if (flag_exceptions
&& !processing_template_decl
13829 && flag_enforce_eh_specs
13830 && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
13831 current_eh_spec_block
= begin_eh_spec_block ();
13835 /* We have finished doing semantic analysis on DECL, but have not yet
13836 generated RTL for its body. Save away our current state, so that
13837 when we want to generate RTL later we know what to do. */
13840 save_function_data (decl
)
13843 struct cp_language_function
*f
;
13845 /* Save the language-specific per-function data so that we can
13846 get it back when we really expand this function. */
13847 my_friendly_assert (!DECL_PENDING_INLINE_P (decl
),
13851 f
= ((struct cp_language_function
*)
13852 xmalloc (sizeof (struct cp_language_function
)));
13853 memcpy (f
, cp_function_chain
, sizeof (struct cp_language_function
));
13854 DECL_SAVED_FUNCTION_DATA (decl
) = f
;
13856 /* Clear out the bits we don't need. */
13857 f
->base
.x_stmt_tree
.x_last_stmt
= NULL_TREE
;
13858 f
->base
.x_stmt_tree
.x_last_expr_type
= NULL_TREE
;
13859 f
->x_named_label_uses
= NULL
;
13860 f
->bindings
= NULL
;
13861 f
->x_local_names
= NULL
;
13863 /* When we get back here again, we will be expanding. */
13864 f
->x_expanding_p
= 1;
13866 /* If we've already decided that we cannot inline this function, we
13867 must remember that fact when we actually go to expand the
13869 if (current_function_cannot_inline
)
13871 f
->cannot_inline
= current_function_cannot_inline
;
13872 DECL_INLINE (decl
) = 0;
13876 /* At the end of every constructor we generate to code to return
13877 `this'. Do that now. */
13880 finish_constructor_body ()
13882 /* Any return from a constructor will end up here. */
13884 add_stmt (build_stmt (LABEL_STMT
, ctor_label
));
13886 /* Clear CTOR_LABEL so that finish_return_stmt knows to really
13887 generate the return, rather than a goto to CTOR_LABEL. */
13888 ctor_label
= NULL_TREE
;
13889 /* In check_return_expr we translate an empty return from a
13890 constructor to a return of `this'. */
13891 finish_return_stmt (NULL_TREE
);
13892 /* Mark the end of the constructor. */
13893 add_stmt (build_stmt (CTOR_STMT
));
13896 /* At the end of every destructor we generate code to restore virtual
13897 function tables to the values desired by base classes and to call
13898 to base class destructors. Do that now. */
13901 finish_destructor_body ()
13903 tree compound_stmt
;
13906 /* Create a block to contain all the extra code. */
13907 compound_stmt
= begin_compound_stmt (/*has_no_scope=*/0);
13909 /* Any return from a destructor will end up here. */
13910 add_stmt (build_stmt (LABEL_STMT
, dtor_label
));
13912 /* Generate the code to call destructor on base class. If this
13913 destructor belongs to a class with virtual functions, then set
13914 the virtual function table pointer to represent the type of our
13917 /* This side-effect makes call to `build_delete' generate the code
13918 we have to have at the end of this destructor. `build_delete'
13919 will set the flag again. */
13920 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
13922 exprstmt
= build_delete (current_class_type
,
13924 sfk_base_destructor
,
13925 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
,
13928 if (exprstmt
!= error_mark_node
13929 && (TREE_CODE (exprstmt
) != NOP_EXPR
13930 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
13931 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
13933 if (exprstmt
!= void_zero_node
)
13934 /* Don't call `expand_expr_stmt' if we're not going to do
13935 anything, since -Wall will give a diagnostic. */
13936 finish_expr_stmt (exprstmt
);
13938 /* Run destructors for all virtual baseclasses. */
13939 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
13944 if_stmt
= begin_if_stmt ();
13945 finish_if_stmt_cond (build (BIT_AND_EXPR
, integer_type_node
,
13946 current_in_charge_parm
,
13950 vbases
= CLASSTYPE_VBASECLASSES (current_class_type
);
13951 /* The CLASSTYPE_VBASECLASSES list is in initialization
13952 order, so we have to march through it in reverse order. */
13953 for (vbases
= nreverse (copy_list (vbases
));
13955 vbases
= TREE_CHAIN (vbases
))
13957 tree vbase
= TREE_VALUE (vbases
);
13958 tree base_type
= BINFO_TYPE (vbase
);
13960 if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (base_type
))
13962 tree base_ptr_type
= build_pointer_type (base_type
);
13963 tree expr
= current_class_ptr
;
13965 /* Convert to the basetype here, as we know the layout is
13966 fixed. What is more, if we let build_method_call do it,
13967 it will use the vtable, which may have been clobbered
13968 by the deletion of our primary base. */
13970 expr
= build1 (NOP_EXPR
, base_ptr_type
, expr
);
13971 expr
= build (PLUS_EXPR
, base_ptr_type
, expr
,
13972 BINFO_OFFSET (vbase
));
13973 expr
= build_indirect_ref (expr
, NULL
);
13974 expr
= build_method_call (expr
, base_dtor_identifier
,
13977 finish_expr_stmt (expr
);
13981 finish_then_clause (if_stmt
);
13986 /* In a virtual destructor, we must call delete. */
13987 if (DECL_VIRTUAL_P (current_function_decl
))
13990 tree virtual_size
= c_sizeof (current_class_type
);
13994 At the point of definition of a virtual destructor (including
13995 an implicit definition), non-placement operator delete shall
13996 be looked up in the scope of the destructor's class and if
13997 found shall be accessible and unambiguous. */
13998 exprstmt
= build_op_delete_call
13999 (DELETE_EXPR
, current_class_ptr
, virtual_size
,
14000 LOOKUP_NORMAL
| LOOKUP_SPECULATIVELY
, NULL_TREE
);
14002 if_stmt
= begin_if_stmt ();
14003 finish_if_stmt_cond (build (BIT_AND_EXPR
, integer_type_node
,
14004 current_in_charge_parm
,
14007 finish_expr_stmt (exprstmt
);
14008 finish_then_clause (if_stmt
);
14012 /* Close the block we started above. */
14013 finish_compound_stmt (/*has_no_scope=*/0, compound_stmt
);
14016 /* Finish up a function declaration and compile that function
14017 all the way to assembler language output. The free the storage
14018 for the function definition.
14020 FLAGS is a bitwise or of the following values:
14022 An extra call to poplevel (and expand_end_bindings) must be
14023 made to take care of the binding contour for the base
14024 initializers. This is only relevant for constructors.
14026 We just finished processing the body of an in-class inline
14027 function definition. (This processing will have taken place
14028 after the class definition is complete.) */
14031 finish_function (flags
)
14034 register tree fndecl
= current_function_decl
;
14035 tree fntype
, ctype
= NULL_TREE
;
14036 int call_poplevel
= (flags
& 1) != 0;
14037 int inclass_inline
= (flags
& 2) != 0;
14040 /* When we get some parse errors, we can end up without a
14041 current_function_decl, so cope. */
14042 if (fndecl
== NULL_TREE
)
14043 return error_mark_node
;
14045 nested
= function_depth
> 1;
14046 fntype
= TREE_TYPE (fndecl
);
14048 /* TREE_READONLY (fndecl) = 1;
14049 This caused &foo to be of type ptr-to-const-function
14050 which then got a warning when stored in a ptr-to-function variable. */
14052 my_friendly_assert (building_stmt_tree (), 20000911);
14054 finish_fname_decls ();
14056 /* For a cloned function, we've already got all the code we need;
14057 there's no need to add any extra bits. */
14058 if (!DECL_CLONED_FUNCTION_P (fndecl
))
14060 if (DECL_CONSTRUCTOR_P (fndecl
))
14062 finish_constructor_body ();
14066 else if (DECL_DESTRUCTOR_P (fndecl
) && !processing_template_decl
)
14067 finish_destructor_body ();
14068 else if (DECL_MAIN_P (fndecl
))
14070 /* Make it so that `main' always returns 0 by default. */
14072 finish_return_stmt (integer_one_node
);
14074 finish_return_stmt (integer_zero_node
);
14078 /* Finish dealing with exception specifiers. */
14079 if (flag_exceptions
&& !processing_template_decl
14080 && flag_enforce_eh_specs
14081 && TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
14082 finish_eh_spec_block (TYPE_RAISES_EXCEPTIONS
14083 (TREE_TYPE (current_function_decl
)),
14084 current_eh_spec_block
);
14087 /* If we're saving up tree structure, tie off the function now. */
14088 finish_stmt_tree (&DECL_SAVED_TREE (fndecl
));
14090 /* This must come after expand_function_end because cleanups might
14091 have declarations (from inline functions) that need to go into
14092 this function's blocks. */
14093 if (current_binding_level
->parm_flag
!= 1)
14094 my_friendly_abort (122);
14095 poplevel (1, 0, 1);
14097 /* Set up the named return value optimization, if we can. Here, we
14098 eliminate the copy from the nrv into the RESULT_DECL and any cleanup
14099 for the nrv. genrtl_start_function and declare_return_variable
14100 handle making the nrv and RESULT_DECL share space. */
14101 if (current_function_return_value
)
14103 tree r
= current_function_return_value
;
14104 /* This is only worth doing for fns that return in memory--and
14105 simpler, since we don't have to worry about promoted modes. */
14106 if (r
!= error_mark_node
14107 && aggregate_value_p (TREE_TYPE (TREE_TYPE (fndecl
))))
14109 DECL_ALIGN (r
) = DECL_ALIGN (DECL_RESULT (fndecl
));
14110 walk_tree_without_duplicates (&DECL_SAVED_TREE (fndecl
),
14111 nullify_returns_r
, r
);
14114 /* Clear it so genrtl_start_function and declare_return_variable
14115 know we're not optimizing. */
14116 current_function_return_value
= NULL_TREE
;
14119 /* Remember that we were in class scope. */
14120 if (current_class_name
)
14121 ctype
= current_class_type
;
14123 /* Must mark the RESULT_DECL as being in this function. */
14124 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
14126 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
14127 to the FUNCTION_DECL node itself. */
14128 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
14130 /* Save away current state, if appropriate. */
14131 if (!processing_template_decl
)
14132 save_function_data (fndecl
);
14134 /* If this function calls `setjmp' it cannot be inlined. When
14135 `longjmp' is called it is not guaranteed to restore the value of
14136 local variables that have been modified since the call to
14137 `setjmp'. So, if were to inline this function into some caller
14138 `c', then when we `longjmp', we might not restore all variables
14139 in `c'. (It might seem, at first blush, that there's no way for
14140 this function to modify local variables in `c', but their
14141 addresses may have been stored somewhere accessible to this
14143 if (!processing_template_decl
&& calls_setjmp_p (fndecl
))
14144 DECL_UNINLINABLE (fndecl
) = 1;
14146 /* Clear out memory we no longer need. */
14147 free_after_parsing (cfun
);
14148 /* Since we never call rest_of_compilation, we never clear
14149 CFUN. Do so explicitly. */
14150 free_after_compilation (cfun
);
14153 /* If this is a in-class inline definition, we may have to pop the
14154 bindings for the template parameters that we added in
14155 maybe_begin_member_template_processing when start_function was
14157 if (inclass_inline
)
14158 maybe_end_member_template_processing ();
14160 /* Leave the scope of the class. */
14162 pop_nested_class ();
14168 /* Let the error reporting routines know that we're outside a
14169 function. For a nested function, this value is used in
14170 pop_cp_function_context and then reset via pop_function_context. */
14171 current_function_decl
= NULL_TREE
;
14176 /* Create the FUNCTION_DECL for a function definition.
14177 DECLSPECS and DECLARATOR are the parts of the declaration;
14178 they describe the return type and the name of the function,
14179 but twisted together in a fashion that parallels the syntax of C.
14181 This function creates a binding context for the function body
14182 as well as setting up the FUNCTION_DECL in current_function_decl.
14184 Returns a FUNCTION_DECL on success.
14186 If the DECLARATOR is not suitable for a function (it defines a datum
14187 instead), we return 0, which tells yyparse to report a parse error.
14189 May return void_type_node indicating that this method is actually
14190 a friend. See grokfield for more details.
14192 Came here with a `.pushlevel' .
14194 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
14195 CHANGES TO CODE IN `grokfield'. */
14198 start_method (declspecs
, declarator
, attrlist
)
14199 tree declarator
, declspecs
, attrlist
;
14201 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
14204 /* Something too ugly to handle. */
14205 if (fndecl
== NULL_TREE
)
14208 /* Pass friends other than inline friend functions back. */
14209 if (fndecl
== void_type_node
)
14212 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
14213 /* Not a function, tell parser to report parse error. */
14216 if (DECL_IN_AGGR_P (fndecl
))
14218 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
14220 if (DECL_CONTEXT (fndecl
)
14221 && TREE_CODE( DECL_CONTEXT (fndecl
)) != NAMESPACE_DECL
)
14222 cp_error ("`%D' is already defined in class `%T'", fndecl
,
14223 DECL_CONTEXT (fndecl
));
14225 return void_type_node
;
14228 check_template_shadow (fndecl
);
14230 DECL_DECLARED_INLINE_P (fndecl
) = 1;
14232 if (flag_default_inline
)
14233 DECL_INLINE (fndecl
) = 1;
14235 /* We process method specializations in finish_struct_1. */
14236 if (processing_template_decl
&& !DECL_TEMPLATE_SPECIALIZATION (fndecl
))
14237 fndecl
= push_template_decl (fndecl
);
14239 if (! DECL_FRIEND_P (fndecl
))
14241 if (TREE_CHAIN (fndecl
))
14243 fndecl
= copy_node (fndecl
);
14244 TREE_CHAIN (fndecl
) = NULL_TREE
;
14247 if (DECL_CONSTRUCTOR_P (fndecl
))
14249 if (! grok_ctor_properties (current_class_type
, fndecl
))
14250 return void_type_node
;
14252 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
14253 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
14256 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0);
14258 /* Make a place for the parms */
14260 current_binding_level
->parm_flag
= 1;
14262 DECL_IN_AGGR_P (fndecl
) = 1;
14266 /* Go through the motions of finishing a function definition.
14267 We don't compile this method until after the whole class has
14270 FINISH_METHOD must return something that looks as though it
14271 came from GROKFIELD (since we are defining a method, after all).
14273 This is called after parsing the body of the function definition.
14274 STMTS is the chain of statements that makes up the function body.
14276 DECL is the ..._DECL that `start_method' provided. */
14279 finish_method (decl
)
14282 register tree fndecl
= decl
;
14285 register tree link
;
14287 if (decl
== void_type_node
)
14290 old_initial
= DECL_INITIAL (fndecl
);
14292 /* Undo the level for the parms (from start_method).
14293 This is like poplevel, but it causes nothing to be
14294 saved. Saving information here confuses symbol-table
14295 output routines. Besides, this information will
14296 be correctly output when this method is actually
14299 /* Clear out the meanings of the local variables of this level;
14300 also record in each decl which block it belongs to. */
14302 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
14304 if (DECL_NAME (link
) != NULL_TREE
)
14305 pop_binding (DECL_NAME (link
), link
);
14306 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
14307 DECL_CONTEXT (link
) = NULL_TREE
;
14310 GNU_xref_end_scope ((size_t) current_binding_level
,
14311 (size_t) current_binding_level
->level_chain
,
14312 current_binding_level
->parm_flag
,
14313 current_binding_level
->keep
);
14315 poplevel (0, 0, 0);
14317 DECL_INITIAL (fndecl
) = old_initial
;
14319 /* We used to check if the context of FNDECL was different from
14320 current_class_type as another way to get inside here. This didn't work
14321 for String.cc in libg++. */
14322 if (DECL_FRIEND_P (fndecl
))
14324 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
14325 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
14326 decl
= void_type_node
;
14332 /* Called when a new struct TYPE is defined.
14333 If this structure or union completes the type of any previous
14334 variable declaration, lay it out and output its rtl. */
14337 hack_incomplete_structures (type
)
14341 struct binding_level
*level
;
14343 if (!type
) /* Don't do this for class templates. */
14346 if (namespace_bindings_p ())
14349 list
= &namespace_scope_incomplete
;
14353 level
= innermost_nonclass_level ();
14354 list
= &level
->incomplete
;
14361 tree decl
= TREE_VALUE (*list
);
14362 if ((decl
&& TREE_TYPE (decl
) == type
)
14363 || (TREE_TYPE (decl
)
14364 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
14365 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
14367 int toplevel
= toplevel_bindings_p ();
14368 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
14369 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
14370 layout_type (TREE_TYPE (decl
));
14371 layout_decl (decl
, 0);
14372 rest_of_decl_compilation (decl
, NULL
, toplevel
, 0);
14376 expand_decl (decl
);
14377 cleanup
= maybe_build_cleanup (decl
);
14378 expand_decl_init (decl
);
14379 if (! expand_decl_cleanup (decl
, cleanup
))
14380 cp_error ("parser lost in parsing declaration of `%D'",
14383 *list
= TREE_CHAIN (*list
);
14386 list
= &TREE_CHAIN (*list
);
14389 /* Keep looking through artificial binding levels generated
14390 for local variables. */
14391 if (level
&& level
->keep
== 2)
14393 level
= level
->level_chain
;
14394 list
= &level
->incomplete
;
14401 /* If DECL is of a type which needs a cleanup, build that cleanup
14405 maybe_build_cleanup (decl
)
14408 tree type
= TREE_TYPE (decl
);
14410 if (type
!= error_mark_node
&& TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type
))
14412 int flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
14415 if (TREE_CODE (type
) == ARRAY_TYPE
)
14419 mark_addressable (decl
);
14420 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
14423 /* Optimize for space over speed here. */
14424 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
14425 || flag_expensive_optimizations
)
14426 flags
|= LOOKUP_NONVIRTUAL
;
14428 rval
= build_delete (TREE_TYPE (rval
), rval
,
14429 sfk_complete_destructor
, flags
, 0);
14431 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
14432 && ! TYPE_HAS_DESTRUCTOR (type
))
14433 rval
= build_compound_expr (tree_cons (NULL_TREE
, rval
,
14434 build_tree_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
14441 /* When a stmt has been parsed, this function is called. */
14446 /* Always assume this statement was not an expression statement. If
14447 it actually was an expression statement, its our callers
14448 responsibility to fix this up. */
14449 last_expr_type
= NULL_TREE
;
14452 /* DECL was originally constructed as a non-static member function,
14453 but turned out to be static. Update it accordingly. */
14456 revert_static_member_fn (decl
)
14460 tree function
= TREE_TYPE (decl
);
14461 tree args
= TYPE_ARG_TYPES (function
);
14463 if (cp_type_quals (TREE_TYPE (TREE_VALUE (args
)))
14464 != TYPE_UNQUALIFIED
)
14465 cp_error ("static member function `%#D' declared with type qualifiers",
14468 args
= TREE_CHAIN (args
);
14469 tmp
= build_function_type (TREE_TYPE (function
), args
);
14470 tmp
= build_qualified_type (tmp
, cp_type_quals (function
));
14471 tmp
= build_exception_variant (tmp
,
14472 TYPE_RAISES_EXCEPTIONS (function
));
14473 TREE_TYPE (decl
) = tmp
;
14474 if (DECL_ARGUMENTS (decl
))
14475 DECL_ARGUMENTS (decl
) = TREE_CHAIN (DECL_ARGUMENTS (decl
));
14476 DECL_STATIC_FUNCTION_P (decl
) = 1;
14479 /* Initialize the variables used during compilation of a C++
14483 push_cp_function_context (f
)
14484 struct function
*f
;
14486 struct cp_language_function
*p
14487 = ((struct cp_language_function
*)
14488 xcalloc (1, sizeof (struct cp_language_function
)));
14489 f
->language
= (struct language_function
*) p
;
14491 /* It takes an explicit call to expand_body to generate RTL for a
14495 /* Whenever we start a new function, we destroy temporaries in the
14497 current_stmt_tree ()->stmts_are_full_exprs_p
= 1;
14500 /* Free the language-specific parts of F, now that we've finished
14501 compiling the function. */
14504 pop_cp_function_context (f
)
14505 struct function
*f
;
14509 struct cp_language_function
*cp
=
14510 (struct cp_language_function
*) f
->language
;
14511 if (cp
->x_local_names
)
14512 VARRAY_FREE (cp
->x_local_names
);
14513 free (f
->language
);
14518 /* Mark P for GC. */
14521 mark_lang_function (p
)
14522 struct cp_language_function
*p
;
14527 mark_c_language_function (&p
->base
);
14529 ggc_mark_tree (p
->x_ctor_label
);
14530 ggc_mark_tree (p
->x_dtor_label
);
14531 ggc_mark_tree (p
->x_current_class_ptr
);
14532 ggc_mark_tree (p
->x_current_class_ref
);
14533 ggc_mark_tree (p
->x_eh_spec_block
);
14534 ggc_mark_tree_varray (p
->x_local_names
);
14536 mark_named_label_lists (&p
->x_named_labels
, &p
->x_named_label_uses
);
14537 mark_binding_level (&p
->bindings
);
14540 /* Mark the language-specific data in F for GC. */
14543 mark_cp_function_context (f
)
14544 struct function
*f
;
14546 mark_lang_function ((struct cp_language_function
*) f
->language
);
14553 enum tree_code code
= TREE_CODE (t
);
14554 if (code
== IDENTIFIER_NODE
)
14556 struct lang_identifier
*li
= (struct lang_identifier
*) t
;
14557 struct lang_id2
*li2
= li
->x
;
14558 ggc_mark_tree (li
->namespace_bindings
);
14559 ggc_mark_tree (li
->bindings
);
14560 ggc_mark_tree (li
->class_value
);
14561 ggc_mark_tree (li
->class_template_info
);
14565 ggc_mark_tree (li2
->label_value
);
14566 ggc_mark_tree (li2
->implicit_decl
);
14567 ggc_mark_tree (li2
->error_locus
);
14570 else if (code
== CPLUS_BINDING
)
14572 if (BINDING_HAS_LEVEL_P (t
))
14573 mark_binding_level (&BINDING_LEVEL (t
));
14575 ggc_mark_tree (BINDING_SCOPE (t
));
14576 ggc_mark_tree (BINDING_VALUE (t
));
14578 else if (code
== OVERLOAD
)
14579 ggc_mark_tree (OVL_FUNCTION (t
));
14580 else if (code
== TEMPLATE_PARM_INDEX
)
14581 ggc_mark_tree (TEMPLATE_PARM_DECL (t
));
14582 else if (TREE_CODE_CLASS (code
) == 'd')
14584 struct lang_decl
*ld
= DECL_LANG_SPECIFIC (t
);
14589 c_mark_lang_decl (&ld
->decl_flags
.base
);
14590 if (!DECL_GLOBAL_CTOR_P (t
)
14591 && !DECL_GLOBAL_DTOR_P (t
)
14592 && !DECL_THUNK_P (t
)
14593 && !DECL_DISCRIMINATOR_P (t
))
14594 ggc_mark_tree (ld
->decl_flags
.u2
.access
);
14595 else if (DECL_THUNK_P (t
))
14596 ggc_mark_tree (ld
->decl_flags
.u2
.vcall_offset
);
14597 if (TREE_CODE (t
) != NAMESPACE_DECL
)
14598 ggc_mark_tree (ld
->decl_flags
.u
.template_info
);
14600 mark_binding_level (&NAMESPACE_LEVEL (t
));
14601 if (CAN_HAVE_FULL_LANG_DECL_P (t
))
14603 ggc_mark_tree (ld
->befriending_classes
);
14604 ggc_mark_tree (ld
->context
);
14605 ggc_mark_tree (ld
->cloned_function
);
14606 if (TREE_CODE (t
) == TYPE_DECL
)
14607 ggc_mark_tree (ld
->u
.sorted_fields
);
14608 else if (TREE_CODE (t
) == FUNCTION_DECL
14609 && !DECL_PENDING_INLINE_P (t
))
14610 mark_lang_function (DECL_SAVED_FUNCTION_DATA (t
));
14614 else if (TREE_CODE_CLASS (code
) == 't')
14616 struct lang_type
*lt
= TYPE_LANG_SPECIFIC (t
);
14618 if (lt
&& !(TREE_CODE (t
) == POINTER_TYPE
14619 && TREE_CODE (TREE_TYPE (t
)) == METHOD_TYPE
))
14622 ggc_mark_tree (lt
->primary_base
);
14623 ggc_mark_tree (lt
->vfields
);
14624 ggc_mark_tree (lt
->vbases
);
14625 ggc_mark_tree (lt
->tags
);
14626 ggc_mark_tree (lt
->size
);
14627 ggc_mark_tree (lt
->pure_virtuals
);
14628 ggc_mark_tree (lt
->friend_classes
);
14629 ggc_mark_tree (lt
->rtti
);
14630 ggc_mark_tree (lt
->methods
);
14631 ggc_mark_tree (lt
->template_info
);
14632 ggc_mark_tree (lt
->befriending_classes
);
14635 /* In the case of pointer-to-member function types, the
14636 TYPE_LANG_SPECIFIC is really just a tree. */
14637 ggc_mark_tree ((tree
) lt
);
14641 /* Return the IDENTIFIER_GLOBAL_VALUE of T, for use in common code, since
14642 the definition of IDENTIFIER_GLOBAL_VALUE is different for C and C++. */
14645 identifier_global_value (t
)
14648 return IDENTIFIER_GLOBAL_VALUE (t
);
14651 /* Build the void_list_node (void_type_node having been created). */
14653 build_void_list_node ()
14655 tree t
= build_tree_list (NULL_TREE
, void_type_node
);
14656 TREE_PARMLIST (t
) = 1;
14661 cp_missing_noreturn_ok_p (decl
)
14664 /* A missing noreturn is ok for the `main' function. */
14665 return DECL_MAIN_P (decl
);