1 /* Process declarations and variables for C compiler.
2 Copyright (C) 1988, 92-97, 1998 Free Software Foundation, Inc.
3 Contributed by Michael Tiemann (tiemann@cygnus.com)
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
23 /* Process declarations and symbol lookup for C front end.
24 Also constructs types; the standard scalar types at initialization,
25 and structure, union, array and enum types when they are declared. */
27 /* ??? not all decl nodes are given the most useful possible
28 line numbers. For example, the CONST_DECLs for enum values. */
46 #define obstack_chunk_alloc xmalloc
47 #define obstack_chunk_free free
49 extern tree builtin_return_address_fndecl;
51 extern struct obstack permanent_obstack;
52 extern struct obstack* saveable_obstack;
54 extern int current_class_depth;
56 extern tree static_ctors, static_dtors;
58 extern int static_labelno;
60 extern tree current_namespace;
61 extern tree global_namespace;
63 extern void (*print_error_function) PROTO((char *));
65 /* Stack of places to restore the search obstack back to. */
67 /* Obstack used for remembering local class declarations (like
68 enums and static (const) members. */
70 struct obstack decl_obstack;
71 static struct stack_level *decl_stack;
73 #ifndef CHAR_TYPE_SIZE
74 #define CHAR_TYPE_SIZE BITS_PER_UNIT
77 #ifndef SHORT_TYPE_SIZE
78 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
82 #define INT_TYPE_SIZE BITS_PER_WORD
85 #ifndef LONG_TYPE_SIZE
86 #define LONG_TYPE_SIZE BITS_PER_WORD
89 #ifndef LONG_LONG_TYPE_SIZE
90 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
93 #ifndef WCHAR_UNSIGNED
94 #define WCHAR_UNSIGNED 0
97 #ifndef FLOAT_TYPE_SIZE
98 #define FLOAT_TYPE_SIZE BITS_PER_WORD
101 #ifndef DOUBLE_TYPE_SIZE
102 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
105 #ifndef LONG_DOUBLE_TYPE_SIZE
106 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
109 #ifndef BOOL_TYPE_SIZE
110 #ifdef SLOW_BYTE_ACCESS
111 #define BOOL_TYPE_SIZE ((SLOW_BYTE_ACCESS) ? (POINTER_SIZE) : (CHAR_TYPE_SIZE))
113 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
117 /* We let tm.h override the types used here, to handle trivial differences
118 such as the choice of unsigned int or long unsigned int for size_t.
119 When machines start needing nontrivial differences in the size type,
120 it would be best to do something here to figure out automatically
121 from other information what type to use. */
124 #define SIZE_TYPE "long unsigned int"
128 #define PTRDIFF_TYPE "long int"
132 #define WCHAR_TYPE "int"
135 static tree grokparms PROTO((tree, int));
136 static tree lookup_nested_type PROTO((tree, tree));
137 static char *redeclaration_error_message PROTO((tree, tree));
138 static tree push_overloaded_decl PROTO((tree, int));
140 static struct stack_level *push_decl_level PROTO((struct stack_level *,
142 static void push_binding_level PROTO((struct binding_level *, int,
144 static void pop_binding_level PROTO((void));
145 static void suspend_binding_level PROTO((void));
146 static void resume_binding_level PROTO((struct binding_level *));
147 static struct binding_level *make_binding_level PROTO((void));
148 static int namespace_bindings_p PROTO((void));
149 static void declare_namespace_level PROTO((void));
150 static void signal_catch PROTO((int)) ATTRIBUTE_NORETURN;
151 static void storedecls PROTO((tree));
152 static void storetags PROTO((tree));
153 static void require_complete_types_for_parms PROTO((tree));
154 static void push_overloaded_decl_1 PROTO((tree));
155 static int ambi_op_p PROTO((tree));
156 static int unary_op_p PROTO((tree));
157 static tree store_bindings PROTO((tree, tree));
158 static tree lookup_tag_reverse PROTO((tree, tree));
159 static tree obscure_complex_init PROTO((tree, tree));
160 static tree maybe_build_cleanup_1 PROTO((tree, tree));
161 static tree lookup_name_real PROTO((tree, int, int, int));
162 static void warn_extern_redeclared_static PROTO((tree, tree));
163 static void grok_reference_init PROTO((tree, tree, tree));
164 static tree grokfndecl PROTO((tree, tree, tree, tree, int,
165 enum overload_flags, tree,
166 tree, tree, int, int, int, int, int, int, tree));
167 static tree grokvardecl PROTO((tree, tree, RID_BIT_TYPE *, int, int, tree));
168 static tree lookup_tag PROTO((enum tree_code, tree,
169 struct binding_level *, int));
170 static void set_identifier_type_value_with_scope
171 PROTO((tree, tree, struct binding_level *));
172 static void record_builtin_type PROTO((enum rid, char *, tree));
173 static void record_unknown_type PROTO((tree, char *));
174 static int member_function_or_else PROTO((tree, tree, char *));
175 static void bad_specifiers PROTO((tree, char *, int, int, int, int,
177 static void lang_print_error_function PROTO((char *));
178 static tree maybe_process_template_type_declaration PROTO((tree, int, struct binding_level*));
179 static void check_for_uninitialized_const_var PROTO((tree));
180 static unsigned long typename_hash PROTO((hash_table_key));
181 static boolean typename_compare PROTO((hash_table_key, hash_table_key));
182 static void push_binding PROTO((tree, tree, struct binding_level*));
183 static void add_binding PROTO((tree, tree));
184 static void pop_binding PROTO((tree, tree));
186 #if defined (DEBUG_CP_BINDING_LEVELS)
187 static void indent PROTO((void));
190 /* A node which has tree code ERROR_MARK, and whose type is itself.
191 All erroneous expressions are replaced with this node. All functions
192 that accept nodes as arguments should avoid generating error messages
193 if this node is one of the arguments, since it is undesirable to get
194 multiple error messages from one error in the input. */
196 tree error_mark_node;
198 /* Erroneous argument lists can use this *IFF* they do not modify it. */
199 tree error_mark_list;
201 /* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */
203 tree short_integer_type_node;
204 tree integer_type_node;
205 tree long_integer_type_node;
206 tree long_long_integer_type_node;
208 tree short_unsigned_type_node;
209 tree unsigned_type_node;
210 tree long_unsigned_type_node;
211 tree long_long_unsigned_type_node;
213 tree ptrdiff_type_node;
215 tree unsigned_char_type_node;
216 tree signed_char_type_node;
218 tree wchar_type_node;
219 tree signed_wchar_type_node;
220 tree unsigned_wchar_type_node;
222 tree wchar_decl_node;
224 tree float_type_node;
225 tree double_type_node;
226 tree long_double_type_node;
228 tree complex_integer_type_node;
229 tree complex_float_type_node;
230 tree complex_double_type_node;
231 tree complex_long_double_type_node;
233 tree intQI_type_node;
234 tree intHI_type_node;
235 tree intSI_type_node;
236 tree intDI_type_node;
237 #if HOST_BITS_PER_WIDE_INT >= 64
238 tree intTI_type_node;
241 tree unsigned_intQI_type_node;
242 tree unsigned_intHI_type_node;
243 tree unsigned_intSI_type_node;
244 tree unsigned_intDI_type_node;
245 #if HOST_BITS_PER_WIDE_INT >= 64
246 tree unsigned_intTI_type_node;
249 tree java_byte_type_node;
250 tree java_short_type_node;
251 tree java_int_type_node;
252 tree java_long_type_node;
253 tree java_float_type_node;
254 tree java_double_type_node;
255 tree java_char_type_node;
256 tree java_boolean_type_node;
258 /* A VOID_TYPE node, and the same, packaged in a TREE_LIST. */
260 tree void_type_node, void_list_node;
263 /* Nodes for types `void *' and `const void *'. */
266 tree const_ptr_type_node;
268 /* Nodes for types `char *' and `const char *'. */
270 tree string_type_node, const_string_type_node;
272 /* Type `char[256]' or something like it.
273 Used when an array of char is needed and the size is irrelevant. */
275 tree char_array_type_node;
277 /* Type `int[256]' or something like it.
278 Used when an array of int needed and the size is irrelevant. */
280 tree int_array_type_node;
282 /* Type `wchar_t[256]' or something like it.
283 Used when a wide string literal is created. */
285 tree wchar_array_type_node;
287 /* The bool data type, and constants */
288 tree boolean_type_node, boolean_true_node, boolean_false_node;
290 /* Type `int ()' -- used for implicit declaration of functions. */
292 tree default_function_type;
294 /* Function types `double (double)' and `double (double, double)', etc. */
296 static tree double_ftype_double, double_ftype_double_double;
297 static tree int_ftype_int, long_ftype_long;
298 static tree float_ftype_float;
299 static tree ldouble_ftype_ldouble;
301 /* Function type `int (const void *, const void *, size_t)' */
302 static tree int_ftype_cptr_cptr_sizet;
305 tree vtable_entry_type;
306 tree delta_type_node;
308 /* Old rtti stuff. */
309 tree __baselist_desc_type_node;
310 tree __i_desc_type_node, __m_desc_type_node;
311 tree __t_desc_array_type, __i_desc_array_type, __m_desc_array_type;
313 tree __t_desc_type_node;
315 tree __tp_desc_type_node;
317 tree __access_mode_type_node;
318 tree __bltn_desc_type_node, __user_desc_type_node, __class_desc_type_node;
319 tree __ptr_desc_type_node, __attr_desc_type_node, __func_desc_type_node;
320 tree __ptmf_desc_type_node, __ptmd_desc_type_node;
322 /* Not needed yet? May be needed one day? */
323 tree __bltn_desc_array_type, __user_desc_array_type, __class_desc_array_type;
324 tree __ptr_desc_array_type, __attr_dec_array_type, __func_desc_array_type;
325 tree __ptmf_desc_array_type, __ptmd_desc_array_type;
328 /* Indicates that there is a type value in some namespace, although
329 that is not necessarily in scope at the moment. */
331 static tree global_type_node;
333 tree class_star_type_node;
334 tree class_type_node, record_type_node, union_type_node, enum_type_node;
335 tree unknown_type_node;
336 tree opaque_type_node, signature_type_node;
337 tree sigtable_entry_type;
339 /* Array type `vtable_entry_type[]' */
341 tree vtbl_ptr_type_node;
347 /* Expect only namespace names now. */
348 static int only_namespace_names;
350 /* In a destructor, the point at which all derived class destroying
351 has been done, just before any base class destroying will be done. */
355 /* In a destructor, the last insn emitted after the start of the
356 function and the parms. */
358 static rtx last_dtor_insn;
360 /* In a constructor, the last insn emitted after the start of the
361 function and the parms, the exception specification and any
362 function-try-block. The constructor initializers are emitted after
365 static rtx last_parm_cleanup_insn;
367 /* In a constructor, the point at which we are ready to return
368 the pointer to the initialized object. */
372 /* A FUNCTION_DECL which can call `abort'. Not necessarily the
373 one that the user will declare, but sufficient to be called
374 by routines that want to abort the program. */
378 /* A FUNCTION_DECL for the default `::operator delete'. */
380 tree global_delete_fndecl;
382 extern rtx cleanup_label, return_label;
384 /* If original DECL_RESULT of current function was a register,
385 but due to being an addressable named return value, would up
386 on the stack, this variable holds the named return value's
387 original location. */
388 static rtx original_result_rtx;
390 /* Sequence of insns which represents base initialization. */
393 /* C++: Keep these around to reduce calls to `get_identifier'.
394 Identifiers for `this' in member functions and the auto-delete
395 parameter for destructors. */
396 tree this_identifier, in_charge_identifier;
397 tree ctor_identifier, dtor_identifier;
398 /* Used in pointer to member functions, in vtables, and in sigtables. */
399 tree pfn_identifier, index_identifier, delta_identifier, delta2_identifier;
400 tree pfn_or_delta2_identifier, tag_identifier;
401 tree vt_off_identifier;
403 struct named_label_list
405 struct binding_level *binding_level;
408 char *filename_o_goto;
410 struct named_label_list *next;
413 /* A list (chain of TREE_LIST nodes) of named label uses.
414 The TREE_PURPOSE field is the list of variables defined
415 in the label's scope defined at the point of use.
416 The TREE_VALUE field is the LABEL_DECL used.
417 The TREE_TYPE field holds `current_binding_level' at the
418 point of the label's use.
420 BWAHAHAAHAHahhahahahaah. No, no, no, said the little chicken.
422 Look at the pretty struct named_label_list. See the pretty struct
423 with the pretty named fields that describe what they do. See the
424 pretty lack of gratuitous casts. Notice the code got a lot cleaner.
426 Used only for jumps to as-yet undefined labels, since
427 jumps to defined labels can have their validity checked
430 static struct named_label_list *named_label_uses = NULL;
432 /* A list of objects which have constructors or destructors
433 which reside in the global scope. The decl is stored in
434 the TREE_VALUE slot and the initializer is stored
435 in the TREE_PURPOSE slot. */
436 tree static_aggregates;
440 /* Two expressions that are constants with value zero.
441 The first is of type `int', the second of type `void *'. */
443 tree integer_zero_node;
444 tree null_pointer_node;
446 /* The value for __null (NULL), namely, a zero of an integer type with
447 the same number of bits as a pointer. */
450 /* A node for the integer constants 1, 2, and 3. */
452 tree integer_one_node, integer_two_node, integer_three_node;
454 /* While defining an enum type, this is 1 plus the last enumerator
457 static tree enum_next_value;
459 /* Nonzero means that there was overflow computing enum_next_value. */
461 static int enum_overflow;
463 /* Parsing a function declarator leaves a list of parameter names
464 or a chain or parameter decls here. */
466 tree last_function_parms;
468 /* Parsing a function declarator leaves here a chain of structure
469 and enum types declared in the parmlist. */
471 static tree last_function_parm_tags;
473 /* After parsing the declarator that starts a function definition,
474 `start_function' puts here the list of parameter names or chain of decls.
475 `store_parm_decls' finds it here. */
477 static tree current_function_parms;
479 /* Similar, for last_function_parm_tags. */
480 static tree current_function_parm_tags;
482 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
483 that have names. Here so we can clear out their names' definitions
484 at the end of the function. */
486 static tree named_labels;
488 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
490 static tree shadowed_labels;
492 /* The FUNCTION_DECL for the function currently being compiled,
493 or 0 if between functions. */
494 tree current_function_decl;
496 /* Set to 0 at beginning of a function definition, set to 1 if
497 a return statement that specifies a return value is seen. */
499 int current_function_returns_value;
501 /* Set to 0 at beginning of a function definition, set to 1 if
502 a return statement with no argument is seen. */
504 int current_function_returns_null;
506 /* Set to 0 at beginning of a function definition, and whenever
507 a label (case or named) is defined. Set to value of expression
508 returned from function when that value can be transformed into
509 a named return value. */
511 tree current_function_return_value;
513 /* Nonzero means give `double' the same size as `float'. */
515 extern int flag_short_double;
517 /* Nonzero means don't recognize any builtin functions. */
519 extern int flag_no_builtin;
521 /* Nonzero means don't recognize the non-ANSI builtin functions.
524 extern int flag_no_nonansi_builtin;
526 /* Nonzero means enable obscure ANSI features and disable GNU extensions
527 that might cause ANSI-compliant code to be miscompiled. */
529 extern int flag_ansi;
531 /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes)
533 extern int flag_huge_objects;
535 /* Nonzero if we want to conserve space in the .o files. We do this
536 by putting uninitialized data and runtime initialized data into
537 .common instead of .data at the expense of not flagging multiple
539 extern int flag_conserve_space;
541 /* Pointers to the base and current top of the language name stack. */
543 extern tree *current_lang_base, *current_lang_stack;
545 /* C and C++ flags are in decl2.c. */
547 /* Set to 0 at beginning of a constructor, set to 1
548 if that function does an allocation before referencing its
549 instance variable. */
550 static int current_function_assigns_this;
551 int current_function_just_assigned_this;
553 /* Set to 0 at beginning of a function. Set non-zero when
554 store_parm_decls is called. Don't call store_parm_decls
555 if this flag is non-zero! */
556 int current_function_parms_stored;
558 /* Flag used when debugging spew.c */
560 extern int spew_debug;
562 /* This is a copy of the class_shadowed list of the previous class binding
563 contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs
564 when entering another class scope (i.e. a cache miss). */
565 extern tree previous_class_values;
567 /* A expression of value 0 with the same precision as a sizetype
569 tree signed_size_zero_node;
571 /* The name of the anonymous namespace, throughout this translation
573 tree anonymous_namespace_name;
576 /* Allocate a level of searching. */
580 push_decl_level (stack, obstack)
581 struct stack_level *stack;
582 struct obstack *obstack;
584 struct stack_level tem;
587 return push_stack_level (obstack, (char *)&tem, sizeof (tem));
590 /* For each binding contour we allocate a binding_level structure
591 which records the names defined in that contour.
594 1) one for each function definition,
595 where internal declarations of the parameters appear.
596 2) one for each compound statement,
597 to record its declarations.
599 The current meaning of a name can be found by searching the levels
600 from the current one out to the global one.
602 Off to the side, may be the class_binding_level. This exists only
603 to catch class-local declarations. It is otherwise nonexistent.
605 Also there may be binding levels that catch cleanups that must be
606 run when exceptions occur. Thus, to see whether a name is bound in
607 the current scope, it is not enough to look in the
608 CURRENT_BINDING_LEVEL. You should use lookup_name_current_level
611 /* Note that the information in the `names' component of the global contour
612 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
616 /* A chain of _DECL nodes for all variables, constants, functions,
617 and typedef types. These are in the reverse of the order
618 supplied. There may be OVERLOADs on this list, too, but they
619 are wrapped in TREE_LISTs; the TREE_VALUE is the OVERLOAD. */
622 /* A list of structure, union and enum definitions, for looking up
624 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
625 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
626 or ENUMERAL_TYPE node.
628 C++: the TREE_VALUE nodes can be simple types for
629 component_bindings. */
632 /* A list of USING_DECL nodes. */
635 /* A list of used namespaces. PURPOSE is the namespace,
636 VALUE the common ancestor with this binding_level's namespace. */
637 tree using_directives;
639 /* If this binding level is the binding level for a class, then
640 class_shadowed is a TREE_LIST. The TREE_PURPOSE of each node
641 is the name of an entity bound in the class; the TREE_VALUE is
642 the IDENTIFIER_CLASS_VALUE before we entered the class. Thus,
643 when leaving class scope, we can restore the
644 IDENTIFIER_CLASS_VALUE by walking this list. The TREE_TYPE is
645 the DECL bound by this name in the class. */
648 /* Similar to class_shadowed, but for IDENTIFIER_TYPE_VALUE, and
649 is used for all binding levels. */
652 /* For each level (except not the global one),
653 a chain of BLOCK nodes for all the levels
654 that were entered and exited one level down. */
657 /* The BLOCK node for this level, if one has been preallocated.
658 If 0, the BLOCK is allocated (if needed) when the level is popped. */
661 /* The binding level which this one is contained in (inherits from). */
662 struct binding_level *level_chain;
664 /* List of decls in `names' that have incomplete
665 structure or union types. */
668 /* List of VAR_DECLS saved from a previous for statement.
669 These would be dead in ANSI-conforming code, but might
670 be referenced in ARM-era code. These are stored in a
671 TREE_LIST; the TREE_VALUE is the actual declaration. */
672 tree dead_vars_from_for;
674 /* 1 for the level that holds the parameters of a function.
675 2 for the level that holds a class declaration.
676 3 for levels that hold parameter declarations. */
677 unsigned parm_flag : 4;
679 /* 1 means make a BLOCK for this level regardless of all else.
680 2 for temporary binding contours created by the compiler. */
683 /* Nonzero if this level "doesn't exist" for tags. */
684 unsigned tag_transparent : 1;
686 /* Nonzero if this level can safely have additional
687 cleanup-needing variables added to it. */
688 unsigned more_cleanups_ok : 1;
689 unsigned have_cleanups : 1;
691 /* Nonzero if this level is for storing the decls for template
692 parameters and generic decls; these decls will be discarded and
693 replaced with a TEMPLATE_DECL. */
694 unsigned pseudo_global : 1;
696 /* This is set for a namespace binding level. */
697 unsigned namespace_p : 1;
699 /* True if this level is that of a for-statement where we need to
700 worry about ambiguous (ARM or ANSI) scope rules. */
701 unsigned is_for_scope : 1;
703 /* Two bits left for this word. */
705 #if defined(DEBUG_CP_BINDING_LEVELS)
706 /* Binding depth at which this level began. */
707 unsigned binding_depth;
708 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
711 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
713 /* The (non-class) binding level currently in effect. */
715 static struct binding_level *current_binding_level;
717 /* The binding level of the current class, if any. */
719 static struct binding_level *class_binding_level;
721 /* The current (class or non-class) binding level currently in effect. */
723 #define inner_binding_level \
724 (class_binding_level ? class_binding_level : current_binding_level)
726 /* A chain of binding_level structures awaiting reuse. */
728 static struct binding_level *free_binding_level;
730 /* The outermost binding level, for names of file scope.
731 This is created when the compiler is started and exists
732 through the entire run. */
734 static struct binding_level *global_binding_level;
736 /* Binding level structures are initialized by copying this one. */
738 static struct binding_level clear_binding_level;
740 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
742 static int keep_next_level_flag;
744 #if defined(DEBUG_CP_BINDING_LEVELS)
745 static int binding_depth = 0;
746 static int is_class_level = 0;
753 for (i = 0; i < binding_depth*2; i++)
756 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
758 static tree pushdecl_with_scope PROTO((tree, struct binding_level *));
761 push_binding_level (newlevel, tag_transparent, keep)
762 struct binding_level *newlevel;
763 int tag_transparent, keep;
765 /* Add this level to the front of the chain (stack) of levels that
767 *newlevel = clear_binding_level;
768 if (class_binding_level)
770 newlevel->level_chain = class_binding_level;
771 class_binding_level = (struct binding_level *)0;
775 newlevel->level_chain = current_binding_level;
777 current_binding_level = newlevel;
778 newlevel->tag_transparent = tag_transparent;
779 newlevel->more_cleanups_ok = 1;
780 newlevel->keep = keep;
781 #if defined(DEBUG_CP_BINDING_LEVELS)
782 newlevel->binding_depth = binding_depth;
784 fprintf (stderr, "push %s level 0x%08x line %d\n",
785 (is_class_level) ? "class" : "block", newlevel, lineno);
788 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
794 if (class_binding_level)
795 current_binding_level = class_binding_level;
797 if (global_binding_level)
799 /* Cannot pop a level, if there are none left to pop. */
800 if (current_binding_level == global_binding_level)
801 my_friendly_abort (123);
803 /* Pop the current level, and free the structure for reuse. */
804 #if defined(DEBUG_CP_BINDING_LEVELS)
807 fprintf (stderr, "pop %s level 0x%08x line %d\n",
808 (is_class_level) ? "class" : "block",
809 current_binding_level, lineno);
810 if (is_class_level != (current_binding_level == class_binding_level))
813 fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
816 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
818 register struct binding_level *level = current_binding_level;
819 current_binding_level = current_binding_level->level_chain;
820 level->level_chain = free_binding_level;
821 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
822 if (level->binding_depth != binding_depth)
824 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
825 free_binding_level = level;
827 class_binding_level = current_binding_level;
828 if (class_binding_level->parm_flag != 2)
829 class_binding_level = 0;
830 while (current_binding_level->parm_flag == 2)
831 current_binding_level = current_binding_level->level_chain;
836 suspend_binding_level ()
838 if (class_binding_level)
839 current_binding_level = class_binding_level;
841 if (global_binding_level)
843 /* Cannot suspend a level, if there are none left to suspend. */
844 if (current_binding_level == global_binding_level)
845 my_friendly_abort (123);
847 /* Suspend the current level. */
848 #if defined(DEBUG_CP_BINDING_LEVELS)
851 fprintf (stderr, "suspend %s level 0x%08x line %d\n",
852 (is_class_level) ? "class" : "block",
853 current_binding_level, lineno);
854 if (is_class_level != (current_binding_level == class_binding_level))
857 fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
860 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
862 current_binding_level = current_binding_level->level_chain;
863 class_binding_level = current_binding_level;
864 if (class_binding_level->parm_flag != 2)
865 class_binding_level = 0;
866 while (current_binding_level->parm_flag == 2)
867 current_binding_level = current_binding_level->level_chain;
872 resume_binding_level (b)
873 struct binding_level *b;
875 /* Resuming binding levels is meant only for namespaces,
876 and those cannot nest into classes. */
877 my_friendly_assert(!class_binding_level, 386);
878 /* Also, resuming a non-directly nested namespace is a no-no. */
879 my_friendly_assert(b->level_chain == current_binding_level, 386);
880 current_binding_level = b;
881 #if defined(DEBUG_CP_BINDING_LEVELS)
882 b->binding_depth = binding_depth;
884 fprintf (stderr, "resume %s level 0x%08x line %d\n",
885 (is_class_level) ? "class" : "block", b, lineno);
888 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
891 /* Create a new `struct binding_level'. */
894 struct binding_level *
895 make_binding_level ()
898 return (struct binding_level *) xmalloc (sizeof (struct binding_level));
901 /* Nonzero if we are currently in the global binding level. */
906 return current_binding_level == global_binding_level;
909 /* Nonzero if we are currently in a toplevel binding level. This
910 means either the global binding level or a namespace in a toplevel
912 Since there are no non-toplevel namespace levels, this really
913 means any namespace or pseudo-global level. */
916 toplevel_bindings_p ()
918 return current_binding_level->namespace_p
919 || current_binding_level->pseudo_global;
922 /* Nonzero if this is a namespace scope. */
925 namespace_bindings_p ()
927 return current_binding_level->namespace_p;
933 keep_next_level_flag = 1;
936 /* Nonzero if the current level needs to have a BLOCK made. */
941 return (current_binding_level->blocks != NULL_TREE
942 || current_binding_level->keep
943 || current_binding_level->names != NULL_TREE
944 || (current_binding_level->tags != NULL_TREE
945 && !current_binding_level->tag_transparent));
948 /* Identify this binding level as a level of parameters. */
951 declare_parm_level ()
953 current_binding_level->parm_flag = 1;
957 declare_pseudo_global_level ()
959 current_binding_level->pseudo_global = 1;
963 declare_namespace_level ()
965 current_binding_level->namespace_p = 1;
969 pseudo_global_level_p ()
971 return current_binding_level->pseudo_global;
975 set_class_shadows (shadows)
978 class_binding_level->class_shadowed = shadows;
981 /* Enter a new binding level.
982 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
983 not for that of tags. */
986 pushlevel (tag_transparent)
989 register struct binding_level *newlevel = NULL_BINDING_LEVEL;
991 /* If this is the top level of a function,
992 just make sure that NAMED_LABELS is 0.
993 They should have been set to 0 at the end of the previous function. */
995 if (current_binding_level == global_binding_level)
996 my_friendly_assert (named_labels == NULL_TREE, 134);
998 /* Reuse or create a struct for this binding level. */
1000 #if defined(DEBUG_CP_BINDING_LEVELS)
1002 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1003 if (free_binding_level)
1004 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1006 newlevel = free_binding_level;
1007 free_binding_level = free_binding_level->level_chain;
1011 newlevel = make_binding_level ();
1014 push_binding_level (newlevel, tag_transparent, keep_next_level_flag);
1015 GNU_xref_start_scope ((HOST_WIDE_INT) newlevel);
1016 keep_next_level_flag = 0;
1020 note_level_for_for ()
1022 current_binding_level->is_for_scope = 1;
1026 pushlevel_temporary (tag_transparent)
1027 int tag_transparent;
1029 pushlevel (tag_transparent);
1030 current_binding_level->keep = 2;
1033 /* Note we don't call push_momentary() here. Otherwise, it would cause
1034 cleanups to be allocated on the momentary obstack, and they will be
1035 overwritten by the next statement. */
1037 expand_start_bindings (0);
1040 /* For a binding between a name and an entity at a block scope,
1041 this is the `struct binding_level' for the block. */
1042 #define BINDING_LEVEL(NODE) \
1043 ((struct binding_level*) ((struct tree_binding*)NODE)->scope)
1045 /* These are currently unused, but permanent, CPLUS_BINDING nodes.
1046 They are kept here because they are allocated from the permanent
1047 obstack and cannot be easily freed. */
1048 static tree free_binding_nodes;
1050 /* Make DECL the innermost binding for ID. The LEVEL is the binding
1051 level at which this declaration is being bound. */
1054 push_binding (id, decl, level)
1057 struct binding_level* level;
1061 if (!free_binding_nodes)
1063 /* There are no free nodes, so we must build one here. */
1064 push_obstacks_nochange ();
1065 end_temporary_allocation ();
1066 binding = make_node (CPLUS_BINDING);
1071 /* There are nodes on the free list. Grab the first one. */
1072 binding = free_binding_nodes;
1074 /* And update the free list. */
1075 free_binding_nodes = TREE_CHAIN (free_binding_nodes);
1078 /* Now, fill in the binding information. */
1079 BINDING_VALUE (binding) = decl;
1080 BINDING_TYPE (binding) = NULL_TREE;
1081 BINDING_LEVEL (binding) = level;
1082 LOCAL_BINDING_P (binding) = (level != class_binding_level);
1084 /* And put it on the front of the ilst of bindings for ID. */
1085 TREE_CHAIN (binding) = IDENTIFIER_BINDING (id);
1086 IDENTIFIER_BINDING (id) = binding;
1089 /* ID is already bound in the current scope. But, DECL is an
1090 additional binding for ID in the same scope. This is the `struct
1091 stat' hack whereby a non-typedef class-name or enum-name can be
1092 bound at the same level as some other kind of entity. It's the
1093 responsibility of the caller to check that inserting this name is
1096 add_binding (id, decl)
1100 tree binding = IDENTIFIER_BINDING (id);
1102 if (TREE_CODE (decl) == TYPE_DECL && DECL_ARTIFICIAL (decl))
1103 /* The new name is the type name. */
1104 BINDING_TYPE (binding) = decl;
1107 /* The old name must be the type name. It was placed in
1108 IDENTIFIER_VALUE because it was thought, at the point it
1109 was declared, to be the only entity with such a name. */
1110 my_friendly_assert (TREE_CODE (BINDING_VALUE (binding)) == TYPE_DECL
1111 && DECL_ARTIFICIAL (BINDING_VALUE (binding)),
1114 /* Move the type name into the type slot; it is now hidden by
1116 BINDING_TYPE (binding) = BINDING_VALUE (binding);
1117 BINDING_VALUE (binding) = decl;
1121 /* Bind DECL to ID in the current_binding_level. */
1124 push_local_binding (id, decl)
1130 if (TREE_CODE (decl) == OVERLOAD)
1131 /* We must put the OVERLOAD into a TREE_LIST since the
1132 TREE_CHAIN of an OVERLOAD is already used. */
1133 decl = build_tree_list (NULL_TREE, decl);
1135 if (lookup_name_current_level (id))
1136 /* Supplement the existing binding. */
1137 add_binding (id, decl);
1139 /* Create a new binding. */
1140 push_binding (id, d, current_binding_level);
1142 /* And put DECL on the list of things declared by the current
1144 TREE_CHAIN (decl) = current_binding_level->names;
1145 current_binding_level->names = decl;
1148 /* Bind DECL to ID in the class_binding_level. */
1151 push_class_binding (id, decl)
1155 if (IDENTIFIER_BINDING (id)
1156 && BINDING_LEVEL (IDENTIFIER_BINDING (id)) == class_binding_level)
1157 /* Supplement the existing binding. */
1158 add_binding (id, decl);
1160 /* Create a new binding. */
1161 push_binding (id, decl, class_binding_level);
1163 /* Update the IDENTIFIER_CLASS_VALUE for this ID to be the
1164 class-level declaration. Note that we do not use DECL here
1165 because of the possibility of the `struct stat' hack; if DECL is
1166 a class-name or enum-name we might prefer a field-name, or some
1168 IDENTIFIER_CLASS_VALUE (id) = BINDING_VALUE (IDENTIFIER_BINDING (id));
1171 /* Remove the binding for DECL which should be the innermost binding
1175 pop_binding (id, decl)
1181 if (id == NULL_TREE)
1182 /* It's easiest to write the loops that call this function without
1183 checking whether or not the entities involved have names. We
1184 get here for such an entity. */
1187 /* Get the innermost binding for ID. */
1188 binding = IDENTIFIER_BINDING (id);
1190 /* The name should be bound. */
1191 my_friendly_assert (binding != NULL_TREE, 0);
1193 /* The DECL will be either the ordinary binding or the type
1194 binding for this identifier. Remove that binding. */
1195 if (BINDING_VALUE (binding) == decl)
1196 BINDING_VALUE (binding) = NULL_TREE;
1197 else if (BINDING_TYPE (binding) == decl)
1198 BINDING_TYPE (binding) = NULL_TREE;
1200 my_friendly_abort (0);
1202 if (!BINDING_VALUE (binding) && !BINDING_TYPE (binding))
1204 /* We're completely done with the innermost binding for this
1205 identifier. Unhook it from the list of bindings. */
1206 IDENTIFIER_BINDING (id) = TREE_CHAIN (binding);
1208 /* And place it on the free list. */
1209 TREE_CHAIN (binding) = free_binding_nodes;
1210 free_binding_nodes = binding;
1214 /* Exit a binding level.
1215 Pop the level off, and restore the state of the identifier-decl mappings
1216 that were in effect when this level was entered.
1218 If KEEP == 1, this level had explicit declarations, so
1219 and create a "block" (a BLOCK node) for the level
1220 to record its declarations and subblocks for symbol table output.
1222 If FUNCTIONBODY is nonzero, this level is the body of a function,
1223 so create a block as if KEEP were set and also clear out all
1226 If REVERSE is nonzero, reverse the order of decls before putting
1227 them into the BLOCK. */
1230 poplevel (keep, reverse, functionbody)
1236 /* The chain of decls was accumulated in reverse order.
1237 Put it into forward order, just for cleanliness. */
1239 int tmp = functionbody;
1240 int real_functionbody = current_binding_level->keep == 2
1241 ? ((functionbody = 0), tmp) : functionbody;
1242 tree tags = functionbody >= 0 ? current_binding_level->tags : 0;
1243 tree subblocks = functionbody >= 0 ? current_binding_level->blocks : 0;
1244 tree block = NULL_TREE;
1246 int block_previously_created;
1247 int leaving_for_scope;
1249 if (current_binding_level->parm_flag == 2
1250 || current_binding_level->class_shadowed)
1251 /* We should not be using poplevel to pop a class binding level.
1252 Use poplevel_class instead. */
1253 my_friendly_abort (0);
1255 /* We used to use KEEP == 2 to indicate that the new block should go
1256 at the beginning of the list of blocks at this binding level,
1257 rather than the end. This hack is no longer used. */
1258 my_friendly_assert (keep == 0 || keep == 1, 0);
1260 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
1261 (HOST_WIDE_INT) current_binding_level->level_chain,
1262 current_binding_level->parm_flag,
1263 current_binding_level->keep);
1265 if (current_binding_level->keep == 1)
1268 /* Get the decls in the order they were written.
1269 Usually current_binding_level->names is in reverse order.
1270 But parameter decls were previously put in forward order. */
1273 current_binding_level->names
1274 = decls = nreverse (current_binding_level->names);
1276 decls = current_binding_level->names;
1278 /* Output any nested inline functions within this block
1279 if they weren't already output. */
1281 for (decl = decls; decl; decl = TREE_CHAIN (decl))
1282 if (TREE_CODE (decl) == FUNCTION_DECL
1283 && ! TREE_ASM_WRITTEN (decl)
1284 && DECL_INITIAL (decl) != NULL_TREE
1285 && TREE_ADDRESSABLE (decl)
1286 && decl_function_context (decl) == current_function_decl)
1288 /* If this decl was copied from a file-scope decl
1289 on account of a block-scope extern decl,
1290 propagate TREE_ADDRESSABLE to the file-scope decl. */
1291 if (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE)
1292 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1;
1295 push_function_context ();
1296 output_inline_function (decl);
1297 pop_function_context ();
1301 /* If there were any declarations or structure tags in that level,
1302 or if this level is a function body,
1303 create a BLOCK to record them for the life of this function. */
1306 block_previously_created = (current_binding_level->this_block != NULL_TREE);
1307 if (block_previously_created)
1308 block = current_binding_level->this_block;
1309 else if (keep == 1 || functionbody)
1310 block = make_node (BLOCK);
1311 if (block != NULL_TREE)
1313 if (block_previously_created)
1315 if (decls || tags || subblocks)
1317 if (BLOCK_VARS (block) || BLOCK_TYPE_TAGS (block))
1318 warning ("internal compiler error: debugging info corrupted");
1320 BLOCK_VARS (block) = decls;
1321 BLOCK_TYPE_TAGS (block) = tags;
1323 /* We can have previous subblocks and new subblocks when
1324 doing fixup_gotos with complex cleanups. We chain the new
1325 subblocks onto the end of any pre-existing subblocks. */
1326 BLOCK_SUBBLOCKS (block) = chainon (BLOCK_SUBBLOCKS (block),
1329 /* If we created the block earlier on, and we are just
1330 diddling it now, then it already should have a proper
1331 BLOCK_END_NOTE value associated with it. */
1335 BLOCK_VARS (block) = decls;
1336 BLOCK_TYPE_TAGS (block) = tags;
1337 BLOCK_SUBBLOCKS (block) = subblocks;
1338 /* Otherwise, for a new block, install a new BLOCK_END_NOTE
1340 remember_end_note (block);
1344 /* In each subblock, record that this is its superior. */
1347 for (link = subblocks; link; link = TREE_CHAIN (link))
1348 BLOCK_SUPERCONTEXT (link) = block;
1350 /* We still support the old for-scope rules, whereby the variables
1351 in a for-init statement were in scope after the for-statement
1352 ended. We only use the new rules in flag_new_for_scope is
1355 = current_binding_level->is_for_scope && flag_new_for_scope == 1;
1357 /* Remove declarations for all the DECLs in this level. */
1358 for (link = decls; link; link = TREE_CHAIN (link))
1360 if (leaving_for_scope && TREE_CODE (link) == VAR_DECL)
1363 = TREE_CHAIN (IDENTIFIER_BINDING (DECL_NAME (link)));
1367 ns_binding = IDENTIFIER_NAMESPACE_VALUE (DECL_NAME (link));
1370 && (BINDING_LEVEL (outer_binding)
1371 == current_binding_level->level_chain))
1372 /* We have something like:
1377 and we are leaving the `for' scope. There's no reason to
1378 keep the binding of the inner `i' in this case. */
1379 pop_binding (DECL_NAME (link), link);
1380 else if ((outer_binding
1381 && (TREE_CODE (BINDING_VALUE (outer_binding))
1384 && TREE_CODE (ns_binding) == TYPE_DECL))
1385 /* Here, we have something like:
1393 We must pop the for-scope binding so we know what's a
1394 type and what isn't. */
1395 pop_binding (DECL_NAME (link), link);
1398 /* Mark this VAR_DECL as dead so that we can tell we left it
1399 there only for backward compatibility. */
1400 DECL_DEAD_FOR_LOCAL (link) = 1;
1402 /* Keep track of what should of have happenned when we
1403 popped the binding. */
1404 if (outer_binding && BINDING_VALUE (outer_binding))
1405 DECL_SHADOWED_FOR_VAR (link)
1406 = BINDING_VALUE (outer_binding);
1408 /* Add it to the list of dead variables in the next
1409 outermost binding to that we can remove these when we
1410 leave that binding. */
1411 current_binding_level->level_chain->dead_vars_from_for
1412 = tree_cons (NULL_TREE, link,
1413 current_binding_level->level_chain->
1414 dead_vars_from_for);
1416 /* Although we don't pop the CPLUS_BINDING, we do clear
1417 its BINDING_LEVEL since the level is going away now. */
1418 BINDING_LEVEL (IDENTIFIER_BINDING (DECL_NAME (link)))
1424 /* Remove the binding. */
1425 if (TREE_CODE_CLASS (TREE_CODE (link)) == 'd')
1426 pop_binding (DECL_NAME (link), link);
1427 else if (TREE_CODE (link) == TREE_LIST)
1428 pop_binding (DECL_NAME (OVL_FUNCTION (TREE_VALUE (link))),
1431 my_friendly_abort (0);
1435 /* Remove declarations for any `for' variables from inner scopes
1436 that we kept around. */
1437 for (link = current_binding_level->dead_vars_from_for;
1438 link; link = TREE_CHAIN (link))
1439 pop_binding (DECL_NAME (TREE_VALUE (link)), TREE_VALUE (link));
1441 /* Restore the IDENTIFIER_TYPE_VALUEs. */
1442 for (link = current_binding_level->type_shadowed;
1443 link; link = TREE_CHAIN (link))
1444 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link), TREE_VALUE (link));
1446 /* There may be OVERLOADs (wrapped in TREE_LISTs) on the BLOCK_VARs
1447 list if a `using' declaration put them there. The debugging
1448 back-ends won't understand OVERLOAD, so we remove them here.
1449 Because the BLOCK_VARS are (temporarily) shared with
1450 CURRENT_BINDING_LEVEL->NAMES we must do this fixup after we have
1451 popped all the bindings. */
1456 for (d = &BLOCK_VARS (block);
1458 d = *d ? &TREE_CHAIN (*d) : d)
1459 if (TREE_CODE (*d) == TREE_LIST)
1460 *d = TREE_CHAIN (*d);
1463 /* If the level being exited is the top level of a function,
1464 check over all the labels. */
1468 /* If this is the top level block of a function,
1469 the vars are the function's parameters.
1470 Don't leave them in the BLOCK because they are
1471 found in the FUNCTION_DECL instead. */
1473 BLOCK_VARS (block) = 0;
1475 /* Clear out the definitions of all label names,
1476 since their scopes end here. */
1478 for (link = named_labels; link; link = TREE_CHAIN (link))
1480 register tree label = TREE_VALUE (link);
1482 if (DECL_INITIAL (label) == NULL_TREE)
1484 cp_error_at ("label `%D' used but not defined", label);
1485 /* Avoid crashing later. */
1486 define_label (input_filename, 1, DECL_NAME (label));
1488 else if (warn_unused && !TREE_USED (label))
1489 cp_warning_at ("label `%D' defined but not used", label);
1490 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), NULL_TREE);
1492 /* Put the labels into the "variables" of the
1493 top-level block, so debugger can see them. */
1494 TREE_CHAIN (label) = BLOCK_VARS (block);
1495 BLOCK_VARS (block) = label;
1498 named_labels = NULL_TREE;
1501 /* Any uses of undefined labels now operate under constraints
1502 of next binding contour. */
1504 struct binding_level *level_chain;
1505 level_chain = current_binding_level->level_chain;
1508 struct named_label_list *labels;
1509 for (labels = named_label_uses; labels; labels = labels->next)
1510 if (labels->binding_level == current_binding_level)
1512 labels->binding_level = level_chain;
1513 labels->names_in_scope = level_chain->names;
1518 tmp = current_binding_level->keep;
1520 pop_binding_level ();
1522 DECL_INITIAL (current_function_decl) = block;
1525 if (!block_previously_created)
1526 current_binding_level->blocks
1527 = chainon (current_binding_level->blocks, block);
1529 /* If we did not make a block for the level just exited,
1530 any blocks made for inner levels
1531 (since they cannot be recorded as subblocks in that level)
1532 must be carried forward so they will later become subblocks
1533 of something else. */
1535 current_binding_level->blocks
1536 = chainon (current_binding_level->blocks, subblocks);
1538 /* Take care of compiler's internal binding structures. */
1541 expand_end_bindings (getdecls (), keep, 1);
1542 /* Each and every BLOCK node created here in `poplevel' is important
1543 (e.g. for proper debugging information) so if we created one
1544 earlier, mark it as "used". */
1546 TREE_USED (block) = 1;
1547 block = poplevel (keep, reverse, real_functionbody);
1550 /* Each and every BLOCK node created here in `poplevel' is important
1551 (e.g. for proper debugging information) so if we created one
1552 earlier, mark it as "used". */
1554 TREE_USED (block) = 1;
1558 /* Delete the node BLOCK from the current binding level.
1559 This is used for the block inside a stmt expr ({...})
1560 so that the block can be reinserted where appropriate. */
1563 delete_block (block)
1567 if (current_binding_level->blocks == block)
1568 current_binding_level->blocks = TREE_CHAIN (block);
1569 for (t = current_binding_level->blocks; t;)
1571 if (TREE_CHAIN (t) == block)
1572 TREE_CHAIN (t) = TREE_CHAIN (block);
1576 TREE_CHAIN (block) = NULL_TREE;
1577 /* Clear TREE_USED which is always set by poplevel.
1578 The flag is set again if insert_block is called. */
1579 TREE_USED (block) = 0;
1582 /* Insert BLOCK at the end of the list of subblocks of the
1583 current binding level. This is used when a BIND_EXPR is expanded,
1584 to handle the BLOCK node inside the BIND_EXPR. */
1587 insert_block (block)
1590 TREE_USED (block) = 1;
1591 current_binding_level->blocks
1592 = chainon (current_binding_level->blocks, block);
1595 /* Set the BLOCK node for the innermost scope
1596 (the one we are currently in). */
1600 register tree block;
1602 current_binding_level->this_block = block;
1605 /* Do a pushlevel for class declarations. */
1610 register struct binding_level *newlevel;
1612 /* Reuse or create a struct for this binding level. */
1613 #if defined(DEBUG_CP_BINDING_LEVELS)
1615 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1616 if (free_binding_level)
1617 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1619 newlevel = free_binding_level;
1620 free_binding_level = free_binding_level->level_chain;
1623 newlevel = make_binding_level ();
1625 #if defined(DEBUG_CP_BINDING_LEVELS)
1627 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1629 push_binding_level (newlevel, 0, 0);
1631 decl_stack = push_decl_level (decl_stack, &decl_obstack);
1632 class_binding_level = current_binding_level;
1633 class_binding_level->parm_flag = 2;
1634 /* We have just pushed into a new binding level. Now, fake out the rest
1635 of the compiler. Set the `current_binding_level' back to point to
1636 the most closely containing non-class binding level. */
1639 current_binding_level = current_binding_level->level_chain;
1641 while (current_binding_level->parm_flag == 2);
1644 /* ...and a poplevel for class declarations. FORCE is used to force
1645 clearing out of CLASS_VALUEs after a class definition. */
1648 poplevel_class (force)
1651 register struct binding_level *level = class_binding_level;
1652 tree block = NULL_TREE;
1655 my_friendly_assert (level != 0, 354);
1657 decl_stack = pop_stack_level (decl_stack);
1658 /* If we're leaving a toplevel class, don't bother to do the setting
1659 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1660 shouldn't even be used when current_class_type isn't set, and second,
1661 if we don't touch it here, we're able to use the cache effect if the
1662 next time we're entering a class scope, it is the same class. */
1663 if (current_class_depth != 1 || force)
1664 for (shadowed = level->class_shadowed;
1666 shadowed = TREE_CHAIN (shadowed))
1667 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed);
1669 /* Remember to save what IDENTIFIER's were bound in this scope so we
1670 can recover from cache misses. */
1672 previous_class_type = current_class_type;
1673 previous_class_values = class_binding_level->class_shadowed;
1675 for (shadowed = level->type_shadowed;
1677 shadowed = TREE_CHAIN (shadowed))
1678 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed), TREE_VALUE (shadowed));
1680 /* Remove the bindings for all of the class-level declarations. */
1681 for (shadowed = level->class_shadowed;
1683 shadowed = TREE_CHAIN (shadowed))
1684 pop_binding (TREE_PURPOSE (shadowed), TREE_TYPE (shadowed));
1686 GNU_xref_end_scope ((HOST_WIDE_INT) class_binding_level,
1687 (HOST_WIDE_INT) class_binding_level->level_chain,
1688 class_binding_level->parm_flag,
1689 class_binding_level->keep);
1691 if (class_binding_level->parm_flag != 2)
1692 class_binding_level = (struct binding_level *)0;
1694 /* Now, pop out of the binding level which we created up in the
1695 `pushlevel_class' routine. */
1696 #if defined(DEBUG_CP_BINDING_LEVELS)
1698 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1700 pop_binding_level ();
1705 /* For debugging. */
1706 static int no_print_functions = 0;
1707 static int no_print_builtins = 0;
1710 print_binding_level (lvl)
1711 struct binding_level *lvl;
1715 fprintf (stderr, " blocks=");
1716 fprintf (stderr, HOST_PTR_PRINTF, lvl->blocks);
1717 fprintf (stderr, " n_incomplete=%d parm_flag=%d keep=%d",
1718 list_length (lvl->incomplete), lvl->parm_flag, lvl->keep);
1719 if (lvl->tag_transparent)
1720 fprintf (stderr, " tag-transparent");
1721 if (lvl->more_cleanups_ok)
1722 fprintf (stderr, " more-cleanups-ok");
1723 if (lvl->have_cleanups)
1724 fprintf (stderr, " have-cleanups");
1725 fprintf (stderr, "\n");
1728 fprintf (stderr, " names:\t");
1729 /* We can probably fit 3 names to a line? */
1730 for (t = lvl->names; t; t = TREE_CHAIN (t))
1732 if (no_print_functions && (TREE_CODE (t) == FUNCTION_DECL))
1734 if (no_print_builtins
1735 && (TREE_CODE (t) == TYPE_DECL)
1736 && (!strcmp (DECL_SOURCE_FILE (t),"<built-in>")))
1739 /* Function decls tend to have longer names. */
1740 if (TREE_CODE (t) == FUNCTION_DECL)
1747 fprintf (stderr, "\n\t");
1750 print_node_brief (stderr, "", t, 0);
1751 if (t == error_mark_node)
1755 fprintf (stderr, "\n");
1759 fprintf (stderr, " tags:\t");
1761 for (t = lvl->tags; t; t = TREE_CHAIN (t))
1763 if (TREE_PURPOSE (t) == NULL_TREE)
1765 else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t)))
1772 fprintf (stderr, "\n\t");
1775 if (TREE_PURPOSE (t) == NULL_TREE)
1777 print_node_brief (stderr, "<unnamed-typedef", TREE_VALUE (t), 0);
1778 fprintf (stderr, ">");
1780 else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t)))
1781 print_node_brief (stderr, "", TREE_VALUE (t), 0);
1784 print_node_brief (stderr, "<typedef", TREE_PURPOSE (t), 0);
1785 print_node_brief (stderr, "", TREE_VALUE (t), 0);
1786 fprintf (stderr, ">");
1790 fprintf (stderr, "\n");
1792 if (lvl->class_shadowed)
1794 fprintf (stderr, " class-shadowed:");
1795 for (t = lvl->class_shadowed; t; t = TREE_CHAIN (t))
1797 fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
1799 fprintf (stderr, "\n");
1801 if (lvl->type_shadowed)
1803 fprintf (stderr, " type-shadowed:");
1804 for (t = lvl->type_shadowed; t; t = TREE_CHAIN (t))
1806 fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
1808 fprintf (stderr, "\n");
1813 print_other_binding_stack (stack)
1814 struct binding_level *stack;
1816 struct binding_level *level;
1817 for (level = stack; level != global_binding_level; level = level->level_chain)
1819 fprintf (stderr, "binding level ");
1820 fprintf (stderr, HOST_PTR_PRINTF, level);
1821 fprintf (stderr, "\n");
1822 print_binding_level (level);
1827 print_binding_stack ()
1829 struct binding_level *b;
1830 fprintf (stderr, "current_binding_level=");
1831 fprintf (stderr, HOST_PTR_PRINTF, current_binding_level);
1832 fprintf (stderr, "\nclass_binding_level=");
1833 fprintf (stderr, HOST_PTR_PRINTF, class_binding_level);
1834 fprintf (stderr, "\nglobal_binding_level=");
1835 fprintf (stderr, HOST_PTR_PRINTF, global_binding_level);
1836 fprintf (stderr, "\n");
1837 if (class_binding_level)
1839 for (b = class_binding_level; b; b = b->level_chain)
1840 if (b == current_binding_level)
1843 b = class_binding_level;
1845 b = current_binding_level;
1848 b = current_binding_level;
1849 print_other_binding_stack (b);
1850 fprintf (stderr, "global:\n");
1851 print_binding_level (global_binding_level);
1854 /* Namespace binding access routines: The namespace_bindings field of
1855 the identifier is polymorphic, with three possible values:
1856 NULL_TREE, a list of CPLUS_BINDINGS, or any other tree_node
1857 indicating the BINDING_VALUE of global_namespace. */
1859 /* Check whether the a binding for the name to scope is known.
1860 Assumes that the bindings of the name are already a list
1861 of bindings. Returns the binding found, or NULL_TREE. */
1864 find_binding (name, scope)
1868 tree iter, prev = NULL_TREE;
1870 scope = ORIGINAL_NAMESPACE (scope);
1872 for (iter = IDENTIFIER_NAMESPACE_BINDINGS (name); iter;
1873 iter = TREE_CHAIN (iter))
1875 my_friendly_assert (TREE_CODE (iter) == CPLUS_BINDING, 374);
1876 if (BINDING_SCOPE (iter) == scope)
1878 /* Move binding found to the fron of the list, so
1879 subsequent lookups will find it faster. */
1882 TREE_CHAIN (prev) = TREE_CHAIN (iter);
1883 TREE_CHAIN (iter) = IDENTIFIER_NAMESPACE_BINDINGS (name);
1884 IDENTIFIER_NAMESPACE_BINDINGS (name) = iter;
1893 /* Always returns a binding for name in scope. If the
1894 namespace_bindings is not a list, convert it to one first.
1895 If no binding is found, make a new one. */
1898 binding_for_name (name, scope)
1902 tree b = IDENTIFIER_NAMESPACE_BINDINGS (name);
1905 scope = ORIGINAL_NAMESPACE (scope);
1907 if (b && TREE_CODE (b) != CPLUS_BINDING)
1909 /* Get rid of optimization for global scope. */
1910 IDENTIFIER_NAMESPACE_BINDINGS (name) = NULL_TREE;
1911 BINDING_VALUE (binding_for_name (name, global_namespace)) = b;
1912 b = IDENTIFIER_NAMESPACE_BINDINGS (name);
1914 if (b && (result = find_binding (name, scope)))
1916 /* Not found, make a new permanent one. */
1917 push_obstacks (&permanent_obstack, &permanent_obstack);
1918 result = make_node (CPLUS_BINDING);
1919 TREE_CHAIN (result) = b;
1920 IDENTIFIER_NAMESPACE_BINDINGS (name) = result;
1921 BINDING_SCOPE (result) = scope;
1922 BINDING_TYPE (result) = NULL_TREE;
1923 BINDING_VALUE (result) = NULL_TREE;
1928 /* Return the binding value for name in scope, considering that
1929 namespace_binding may or may not be a list of CPLUS_BINDINGS. */
1932 namespace_binding (name, scope)
1936 tree b = IDENTIFIER_NAMESPACE_BINDINGS (name);
1939 if (scope == NULL_TREE)
1940 scope = global_namespace;
1941 if (TREE_CODE (b) != CPLUS_BINDING)
1942 return (scope == global_namespace) ? b : NULL_TREE;
1943 name = find_binding (name,scope);
1944 if (name == NULL_TREE)
1946 return BINDING_VALUE (name);
1949 /* Set the binding value for name in scope. If modifying the binding
1950 of global_namespace is attempted, try to optimize it. */
1953 set_namespace_binding (name, scope, val)
1960 if (scope == NULL_TREE)
1961 scope = global_namespace;
1963 if (scope == global_namespace)
1965 b = IDENTIFIER_NAMESPACE_BINDINGS (name);
1966 if (b == NULL_TREE || TREE_CODE (b) != CPLUS_BINDING)
1968 IDENTIFIER_NAMESPACE_BINDINGS (name) = val;
1972 b = binding_for_name (name, scope);
1973 BINDING_VALUE (b) = val;
1976 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
1977 select a name that is unique to this compilation unit. */
1980 push_namespace (name)
1985 int implicit_use = 0;
1987 if (!global_namespace)
1989 /* This must be ::. */
1990 my_friendly_assert (name == get_identifier ("::"), 377);
1995 /* The name of anonymous namespace is unique for the translation
1997 if (!anonymous_namespace_name)
1998 anonymous_namespace_name = get_file_function_name ('N');
1999 name = anonymous_namespace_name;
2000 d = IDENTIFIER_NAMESPACE_VALUE (name);
2002 /* Reopening anonymous namespace. */
2006 else if (current_namespace == global_namespace
2007 && name == DECL_NAME (std_node))
2014 /* Check whether this is an extended namespace definition. */
2015 d = IDENTIFIER_NAMESPACE_VALUE (name);
2016 if (d != NULL_TREE && TREE_CODE (d) == NAMESPACE_DECL)
2019 if (DECL_NAMESPACE_ALIAS (d))
2021 cp_error ("namespace alias `%D' not allowed here, assuming `%D'",
2022 d, DECL_NAMESPACE_ALIAS (d));
2023 d = DECL_NAMESPACE_ALIAS (d);
2030 /* Make a new namespace, binding the name to it. */
2031 d = build_lang_decl (NAMESPACE_DECL, name, void_type_node);
2032 /* The global namespace is not pushed, and the global binding
2033 level is set elsewhere. */
2038 declare_namespace_level ();
2039 NAMESPACE_LEVEL (d) = current_binding_level;
2043 resume_binding_level (NAMESPACE_LEVEL (d));
2046 do_using_directive (d);
2047 /* Enter the name space. */
2048 current_namespace = d;
2051 /* Pop from the scope of the current namespace. */
2056 if (current_namespace == global_namespace)
2058 my_friendly_assert (in_std>0, 980421);
2062 current_namespace = CP_DECL_CONTEXT (current_namespace);
2063 /* The binding level is not popped, as it might be re-opened later. */
2064 suspend_binding_level ();
2067 /* Concatenate the binding levels of all namespaces. */
2070 cat_namespace_levels()
2074 struct binding_level *b;
2076 last = NAMESPACE_LEVEL (global_namespace) -> names;
2077 /* The nested namespaces appear in the names list of their ancestors. */
2078 for (current = last; current; current = TREE_CHAIN (current))
2080 if (TREE_CODE (current) != NAMESPACE_DECL
2081 || DECL_NAMESPACE_ALIAS (current))
2083 if (!DECL_LANG_SPECIFIC (current))
2086 my_friendly_assert (current == std_node, 393);
2089 b = NAMESPACE_LEVEL (current);
2090 while (TREE_CHAIN (last))
2091 last = TREE_CHAIN (last);
2092 TREE_CHAIN (last) = NAMESPACE_LEVEL (current) -> names;
2096 /* Subroutines for reverting temporarily to top-level for instantiation
2097 of templates and such. We actually need to clear out the class- and
2098 local-value slots of all identifiers, so that only the global values
2099 are at all visible. Simply setting current_binding_level to the global
2100 scope isn't enough, because more binding levels may be pushed. */
2101 struct saved_scope {
2102 struct binding_level *old_binding_level;
2105 struct saved_scope *prev;
2106 tree class_name, class_type;
2107 tree access_specifier;
2109 struct binding_level *class_bindings;
2110 tree *lang_base, *lang_stack, lang_name;
2112 int minimal_parse_mode;
2113 tree last_function_parms;
2114 tree template_parms;
2115 HOST_WIDE_INT processing_template_decl;
2116 tree previous_class_type, previous_class_values;
2117 int processing_specialization;
2118 int processing_explicit_instantiation;
2120 static struct saved_scope *current_saved_scope;
2122 /* A chain of the binding vecs created by store_bindings. We create a
2123 whole bunch of these during compilation, on permanent_obstack, so we
2124 can't just throw them away. */
2125 static tree free_binding_vecs;
2128 store_bindings (names, old_bindings)
2129 tree names, old_bindings;
2132 for (t = names; t; t = TREE_CHAIN (t))
2134 tree binding, t1, id;
2136 if (TREE_CODE (t) == TREE_LIST)
2137 id = TREE_PURPOSE (t);
2142 /* Note that we may have an IDENTIFIER_CLASS_VALUE even when
2143 we have no IDENTIFIER_BINDING if we have left the class
2144 scope, but cached the class-level declarations. */
2145 || !(IDENTIFIER_BINDING (id) || IDENTIFIER_CLASS_VALUE (id)))
2148 for (t1 = old_bindings; t1; t1 = TREE_CHAIN (t1))
2149 if (TREE_VEC_ELT (t1, 0) == id)
2152 if (free_binding_vecs)
2154 binding = free_binding_vecs;
2155 free_binding_vecs = TREE_CHAIN (free_binding_vecs);
2158 binding = make_tree_vec (4);
2162 my_friendly_assert (TREE_CODE (id) == IDENTIFIER_NODE, 135);
2163 TREE_VEC_ELT (binding, 0) = id;
2164 TREE_VEC_ELT (binding, 1) = REAL_IDENTIFIER_TYPE_VALUE (id);
2165 TREE_VEC_ELT (binding, 2) = IDENTIFIER_BINDING (id);
2166 TREE_VEC_ELT (binding, 3) = IDENTIFIER_CLASS_VALUE (id);
2167 IDENTIFIER_BINDING (id) = NULL_TREE;
2168 IDENTIFIER_CLASS_VALUE (id) = NULL_TREE;
2170 TREE_CHAIN (binding) = old_bindings;
2171 old_bindings = binding;
2175 return old_bindings;
2179 maybe_push_to_top_level (pseudo)
2182 extern int current_lang_stacksize;
2183 struct saved_scope *s
2184 = (struct saved_scope *) xmalloc (sizeof (struct saved_scope));
2185 struct binding_level *b = inner_binding_level;
2186 tree old_bindings = NULL_TREE;
2188 if (current_function_decl)
2189 push_cp_function_context (NULL_TREE);
2191 if (previous_class_type)
2192 old_bindings = store_bindings (previous_class_values, old_bindings);
2194 /* Have to include global_binding_level, because class-level decls
2195 aren't listed anywhere useful. */
2196 for (; b; b = b->level_chain)
2200 /* Template IDs are inserted into the global level. If they were
2201 inserted into namespace level, finish_file wouldn't find them
2202 when doing pending instantiations. Therefore, don't stop at
2203 namespace level, but continue until :: . */
2204 if (b == global_binding_level || (pseudo && b->pseudo_global))
2207 old_bindings = store_bindings (b->names, old_bindings);
2208 /* We also need to check class_shadowed to save class-level type
2209 bindings, since pushclass doesn't fill in b->names. */
2210 if (b->parm_flag == 2)
2211 old_bindings = store_bindings (b->class_shadowed, old_bindings);
2213 /* Unwind type-value slots back to top level. */
2214 for (t = b->type_shadowed; t; t = TREE_CHAIN (t))
2215 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t), TREE_VALUE (t));
2218 s->old_binding_level = current_binding_level;
2219 current_binding_level = b;
2221 s->old_namespace = current_namespace;
2222 s->class_name = current_class_name;
2223 s->class_type = current_class_type;
2224 s->access_specifier = current_access_specifier;
2225 s->function_decl = current_function_decl;
2226 s->class_bindings = class_binding_level;
2227 s->lang_stack = current_lang_stack;
2228 s->lang_base = current_lang_base;
2229 s->lang_stacksize = current_lang_stacksize;
2230 s->lang_name = current_lang_name;
2231 s->minimal_parse_mode = minimal_parse_mode;
2232 s->last_function_parms = last_function_parms;
2233 s->template_parms = current_template_parms;
2234 s->processing_template_decl = processing_template_decl;
2235 s->previous_class_type = previous_class_type;
2236 s->previous_class_values = previous_class_values;
2237 s->processing_specialization = processing_specialization;
2238 s->processing_explicit_instantiation = processing_explicit_instantiation;
2240 current_class_name = current_class_type = NULL_TREE;
2241 current_function_decl = NULL_TREE;
2242 class_binding_level = (struct binding_level *)0;
2243 current_lang_stacksize = 10;
2244 current_lang_stack = current_lang_base
2245 = (tree *) xmalloc (current_lang_stacksize * sizeof (tree));
2246 current_lang_name = lang_name_cplusplus;
2247 strict_prototype = strict_prototypes_lang_cplusplus;
2248 named_labels = NULL_TREE;
2249 shadowed_labels = NULL_TREE;
2250 minimal_parse_mode = 0;
2251 previous_class_type = previous_class_values = NULL_TREE;
2252 processing_specialization = 0;
2253 processing_explicit_instantiation = 0;
2254 current_template_parms = NULL_TREE;
2255 processing_template_decl = 0;
2256 current_namespace = global_namespace;
2258 s->prev = current_saved_scope;
2259 s->old_bindings = old_bindings;
2260 current_saved_scope = s;
2262 push_obstacks (&permanent_obstack, &permanent_obstack);
2266 push_to_top_level ()
2268 maybe_push_to_top_level (0);
2272 pop_from_top_level ()
2274 extern int current_lang_stacksize;
2275 struct saved_scope *s = current_saved_scope;
2278 /* Clear out class-level bindings cache. */
2279 if (previous_class_type)
2282 previous_class_type = NULL_TREE;
2287 current_binding_level = s->old_binding_level;
2288 current_saved_scope = s->prev;
2289 for (t = s->old_bindings; t; )
2292 tree id = TREE_VEC_ELT (t, 0);
2295 SET_IDENTIFIER_TYPE_VALUE (id, TREE_VEC_ELT (t, 1));
2296 IDENTIFIER_BINDING (id) = TREE_VEC_ELT (t, 2);
2297 IDENTIFIER_CLASS_VALUE (id) = TREE_VEC_ELT (t, 3);
2300 TREE_CHAIN (save) = free_binding_vecs;
2301 free_binding_vecs = save;
2303 current_namespace = s->old_namespace;
2304 current_class_name = s->class_name;
2305 current_class_type = s->class_type;
2306 current_access_specifier = s->access_specifier;
2307 current_function_decl = s->function_decl;
2308 class_binding_level = s->class_bindings;
2309 free (current_lang_base);
2310 current_lang_base = s->lang_base;
2311 current_lang_stack = s->lang_stack;
2312 current_lang_name = s->lang_name;
2313 current_lang_stacksize = s->lang_stacksize;
2314 if (current_lang_name == lang_name_cplusplus)
2315 strict_prototype = strict_prototypes_lang_cplusplus;
2316 else if (current_lang_name == lang_name_c)
2317 strict_prototype = strict_prototypes_lang_c;
2318 minimal_parse_mode = s->minimal_parse_mode;
2319 last_function_parms = s->last_function_parms;
2320 current_template_parms = s->template_parms;
2321 processing_template_decl = s->processing_template_decl;
2322 previous_class_type = s->previous_class_type;
2323 previous_class_values = s->previous_class_values;
2324 processing_specialization = s->processing_specialization;
2325 processing_explicit_instantiation = s->processing_explicit_instantiation;
2329 if (current_function_decl)
2330 pop_cp_function_context (NULL_TREE);
2333 /* Push a definition of struct, union or enum tag "name".
2334 into binding_level "b". "type" should be the type node,
2335 We assume that the tag "name" is not already defined.
2337 Note that the definition may really be just a forward reference.
2338 In that case, the TYPE_SIZE will be a NULL_TREE.
2340 C++ gratuitously puts all these tags in the name space. */
2342 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
2343 record the shadowed value for this binding contour. TYPE is
2344 the type that ID maps to. */
2347 set_identifier_type_value_with_scope (id, type, b)
2350 struct binding_level *b;
2352 if (!b->namespace_p)
2354 /* Shadow the marker, not the real thing, so that the marker
2355 gets restored later. */
2356 tree old_type_value = REAL_IDENTIFIER_TYPE_VALUE (id);
2358 = tree_cons (id, old_type_value, b->type_shadowed);
2362 tree binding = binding_for_name (id, current_namespace);
2363 BINDING_TYPE (binding) = type;
2364 /* Store marker instead of real type. */
2365 type = global_type_node;
2367 SET_IDENTIFIER_TYPE_VALUE (id, type);
2370 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
2373 set_identifier_type_value (id, type)
2377 set_identifier_type_value_with_scope (id, type, inner_binding_level);
2380 /* Return the type associated with id. */
2383 identifier_type_value (id)
2386 /* There is no type with that name, anywhere. */
2387 if (REAL_IDENTIFIER_TYPE_VALUE (id) == NULL_TREE)
2389 /* This is not the type marker, but the real thing. */
2390 if (REAL_IDENTIFIER_TYPE_VALUE (id) != global_type_node)
2391 return REAL_IDENTIFIER_TYPE_VALUE (id);
2392 /* Have to search for it. It must be on the global level, now.
2393 Ask lookup_name not to return non-types. */
2394 id = lookup_name_real (id, 2, 1, 0);
2396 return TREE_TYPE (id);
2400 /* Pop off extraneous binding levels left over due to syntax errors.
2402 We don't pop past namespaces, as they might be valid. */
2407 #ifdef DEBUG_CP_BINDING_LEVELS
2408 fprintf (stderr, "XXX entering pop_everything ()\n");
2410 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
2412 if (class_binding_level)
2413 pop_nested_class (1);
2417 #ifdef DEBUG_CP_BINDING_LEVELS
2418 fprintf (stderr, "XXX leaving pop_everything ()\n");
2422 /* The type TYPE is being declared. If it is a class template, or a
2423 specialization of a class template, do any processing required and
2424 perform error-checking. If IS_FRIEND is non-zero, this TYPE is
2425 being declared a friend. B is the binding level at which this TYPE
2428 Returns the TYPE_DECL for TYPE, which may have been altered by this
2432 maybe_process_template_type_declaration (type, globalize, b)
2435 struct binding_level* b;
2437 tree decl = TYPE_NAME (type);
2439 if (processing_template_parmlist)
2440 /* You can't declare a new template type in a template parameter
2441 list. But, you can declare a non-template type:
2443 template <class A*> struct S;
2445 is a forward-declaration of `A'. */
2449 maybe_check_template_type (type);
2451 my_friendly_assert (IS_AGGR_TYPE (type)
2452 || TREE_CODE (type) == ENUMERAL_TYPE, 0);
2455 if (/* If !GLOBALIZE then we are looking at a definition.
2456 It may not be a primary template. (For example, in:
2459 struct S1 { class S2 {}; }
2461 we have to push_template_decl for S2.) */
2462 (processing_template_decl && !globalize)
2463 /* If we are declaring a friend template class, we will
2464 have GLOBALIZE set, since something like:
2472 declares S2 to be at global scope. */
2473 || PROCESSING_REAL_TEMPLATE_DECL_P ())
2475 /* This may change after the call to
2476 push_template_decl_real, but we want the original value. */
2477 tree name = DECL_NAME (decl);
2479 decl = push_template_decl_real (decl, globalize);
2480 /* If the current binding level is the binding level for the
2481 template parameters (see the comment in
2482 begin_template_parm_list) and the enclosing level is a class
2483 scope, and we're not looking at a friend, push the
2484 declaration of the member class into the class scope. In the
2485 friend case, push_template_decl will already have put the
2486 friend into global scope, if appropriate. */
2487 if (TREE_CODE (type) != ENUMERAL_TYPE
2488 && !globalize && b->pseudo_global
2489 && b->level_chain->parm_flag == 2)
2491 pushdecl_with_scope (CLASSTYPE_TI_TEMPLATE (type),
2493 finish_member_declaration (CLASSTYPE_TI_TEMPLATE (type));
2494 /* Put this tag on the list of tags for the class, since
2495 that won't happen below because B is not the class
2496 binding level, but is instead the pseudo-global level. */
2497 b->level_chain->tags =
2498 saveable_tree_cons (name, type, b->level_chain->tags);
2499 TREE_NONLOCAL_FLAG (type) = 1;
2500 if (TYPE_SIZE (current_class_type) == NULL_TREE)
2501 CLASSTYPE_TAGS (current_class_type) = b->level_chain->tags;
2509 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2510 Normally put it into the inner-most non-tag-transparent scope,
2511 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2512 The latter is needed for implicit declarations. */
2515 pushtag (name, type, globalize)
2519 register struct binding_level *b;
2523 b = inner_binding_level;
2524 while (b->tag_transparent
2525 || (globalize && b->parm_flag == 2))
2528 if (toplevel_bindings_p ())
2529 b->tags = perm_tree_cons (name, type, b->tags);
2531 b->tags = saveable_tree_cons (name, type, b->tags);
2535 context = type ? TYPE_CONTEXT (type) : NULL_TREE;
2538 tree cs = current_scope ();
2542 else if (cs != NULL_TREE
2543 && TREE_CODE_CLASS (TREE_CODE (cs)) == 't')
2544 /* When declaring a friend class of a local class, we want
2545 to inject the newly named class into the scope
2546 containing the local class, not the namespace scope. */
2547 context = hack_decl_function_context (get_type_decl (cs));
2550 c_decl = TREE_CODE (context) == FUNCTION_DECL
2551 ? context : TYPE_MAIN_DECL (context);
2554 context = current_namespace;
2556 /* Do C++ gratuitous typedefing. */
2557 if (IDENTIFIER_TYPE_VALUE (name) != type)
2559 register tree d = NULL_TREE;
2560 int newdecl = 0, in_class = 0;
2562 if ((b->pseudo_global && b->level_chain->parm_flag == 2)
2563 || b->parm_flag == 2)
2566 d = lookup_nested_type (type, c_decl);
2571 d = build_decl (TYPE_DECL, name, type);
2572 if (current_lang_name == lang_name_java)
2573 TYPE_FOR_JAVA (type) = 1;
2574 SET_DECL_ARTIFICIAL (d);
2576 set_identifier_type_value_with_scope (name, type, b);
2579 d = TYPE_MAIN_DECL (d);
2581 TYPE_NAME (type) = d;
2582 DECL_CONTEXT (d) = FROB_CONTEXT (context);
2584 d = maybe_process_template_type_declaration (type,
2587 if (b->parm_flag == 2)
2589 pushdecl_class_level (d);
2590 if (newdecl && !PROCESSING_REAL_TEMPLATE_DECL_P ())
2591 /* Put this TYPE_DECL on the TYPE_FIELDS list for the
2592 class. But if it's a member template class, we
2593 want the TEMPLATE_DECL, not the TYPE_DECL, so this
2595 finish_member_declaration (d);
2598 d = pushdecl_with_scope (d, b);
2602 if (ANON_AGGRNAME_P (name))
2603 DECL_IGNORED_P (d) = 1;
2605 TYPE_CONTEXT (type) = DECL_CONTEXT (d);
2606 DECL_ASSEMBLER_NAME (d) = DECL_NAME (d);
2607 if (!uses_template_parms (type))
2608 DECL_ASSEMBLER_NAME (d)
2609 = get_identifier (build_overload_name (type, 1, 1));
2612 if (b->parm_flag == 2)
2614 TREE_NONLOCAL_FLAG (type) = 1;
2615 if (TYPE_SIZE (current_class_type) == NULL_TREE)
2616 CLASSTYPE_TAGS (current_class_type) = b->tags;
2620 if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
2621 /* Use the canonical TYPE_DECL for this node. */
2622 TYPE_STUB_DECL (type) = TYPE_NAME (type);
2625 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2626 will be the tagged type we just added to the current
2627 binding level. This fake NULL-named TYPE_DECL node helps
2628 dwarfout.c to know when it needs to output a
2629 representation of a tagged type, and it also gives us a
2630 convenient place to record the "scope start" address for
2633 tree d = build_decl (TYPE_DECL, NULL_TREE, type);
2634 TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b);
2638 /* Counter used to create anonymous type names. */
2640 static int anon_cnt = 0;
2642 /* Return an IDENTIFIER which can be used as a name for
2643 anonymous structs and unions. */
2650 sprintf (buf, ANON_AGGRNAME_FORMAT, anon_cnt++);
2651 return get_identifier (buf);
2654 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2655 This keeps dbxout from getting confused. */
2660 register struct binding_level *b;
2662 static int last_cnt = 0;
2664 /* Fast out if no new anon names were declared. */
2665 if (last_cnt == anon_cnt)
2668 b = current_binding_level;
2669 while (b->tag_transparent)
2674 /* A NULL purpose means we have already processed all tags
2675 from here to the end of the list. */
2676 if (TREE_PURPOSE (tags) == NULL_TREE)
2678 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags)))
2679 TREE_PURPOSE (tags) = NULL_TREE;
2680 tags = TREE_CHAIN (tags);
2682 last_cnt = anon_cnt;
2685 /* Subroutine of duplicate_decls: return truthvalue of whether
2686 or not types of these decls match.
2688 For C++, we must compare the parameter list so that `int' can match
2689 `int&' in a parameter position, but `int&' is not confused with
2693 decls_match (newdecl, olddecl)
2694 tree newdecl, olddecl;
2698 if (TREE_CODE (newdecl) != TREE_CODE (olddecl))
2699 /* If the two DECLs are not even the same kind of thing, we're not
2700 interested in their types. */
2703 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2705 tree f1 = TREE_TYPE (newdecl);
2706 tree f2 = TREE_TYPE (olddecl);
2707 tree p1 = TYPE_ARG_TYPES (f1);
2708 tree p2 = TYPE_ARG_TYPES (f2);
2710 if (DECL_REAL_CONTEXT (newdecl) != DECL_REAL_CONTEXT (olddecl)
2711 && ! (DECL_LANGUAGE (newdecl) == lang_c
2712 && DECL_LANGUAGE (olddecl) == lang_c))
2715 /* When we parse a static member function definition,
2716 we put together a FUNCTION_DECL which thinks its type
2717 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2719 if (TREE_CODE (f1) == METHOD_TYPE && DECL_STATIC_FUNCTION_P (olddecl))
2720 revert_static_member_fn (&newdecl, &f1, &p1);
2721 else if (TREE_CODE (f2) == METHOD_TYPE
2722 && DECL_STATIC_FUNCTION_P (newdecl))
2723 revert_static_member_fn (&olddecl, &f2, &p2);
2725 /* Here we must take care of the case where new default
2726 parameters are specified. Also, warn if an old
2727 declaration becomes ambiguous because default
2728 parameters may cause the two to be ambiguous. */
2729 if (TREE_CODE (f1) != TREE_CODE (f2))
2731 if (TREE_CODE (f1) == OFFSET_TYPE)
2732 cp_compiler_error ("`%D' redeclared as member function", newdecl);
2734 cp_compiler_error ("`%D' redeclared as non-member function", newdecl);
2738 if (same_type_p (TREE_TYPE (f1), TREE_TYPE (f2)))
2740 if (! strict_prototypes_lang_c && DECL_LANGUAGE (olddecl) == lang_c
2743 types_match = self_promoting_args_p (p1);
2744 if (p1 == void_list_node)
2745 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2747 else if (!strict_prototypes_lang_c && DECL_LANGUAGE (olddecl)==lang_c
2748 && DECL_LANGUAGE (newdecl) == lang_c && p1 == NULL_TREE)
2750 types_match = self_promoting_args_p (p2);
2751 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2754 types_match = compparms (p1, p2);
2759 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2761 if (!comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
2762 DECL_TEMPLATE_PARMS (olddecl)))
2765 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2768 types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl),
2769 DECL_TEMPLATE_RESULT (newdecl));
2773 if (TREE_TYPE (newdecl) == error_mark_node)
2774 types_match = TREE_TYPE (olddecl) == error_mark_node;
2775 else if (TREE_TYPE (olddecl) == NULL_TREE)
2776 types_match = TREE_TYPE (newdecl) == NULL_TREE;
2777 else if (TREE_TYPE (newdecl) == NULL_TREE)
2780 types_match = comptypes (TREE_TYPE (newdecl),
2781 TREE_TYPE (olddecl),
2782 COMPARE_REDECLARATION);
2788 /* If NEWDECL is `static' and an `extern' was seen previously,
2789 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2790 information about previous usage as an `extern'.)
2792 Note that this does not apply to the C++ case of declaring
2793 a variable `extern const' and then later `const'.
2795 Don't complain about built-in functions, since they are beyond
2796 the user's control. */
2799 warn_extern_redeclared_static (newdecl, olddecl)
2800 tree newdecl, olddecl;
2804 static char *explicit_extern_static_warning
2805 = "`%D' was declared `extern' and later `static'";
2806 static char *implicit_extern_static_warning
2807 = "`%D' was declared implicitly `extern' and later `static'";
2809 if (TREE_CODE (newdecl) == TYPE_DECL)
2812 name = DECL_ASSEMBLER_NAME (newdecl);
2813 if (TREE_PUBLIC (name) && DECL_THIS_STATIC (newdecl))
2815 /* It's okay to redeclare an ANSI built-in function as static,
2816 or to declare a non-ANSI built-in function as anything. */
2817 if (! (TREE_CODE (newdecl) == FUNCTION_DECL
2818 && olddecl != NULL_TREE
2819 && TREE_CODE (olddecl) == FUNCTION_DECL
2820 && (DECL_BUILT_IN (olddecl)
2821 || DECL_BUILT_IN_NONANSI (olddecl))))
2823 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name)
2824 ? implicit_extern_static_warning
2825 : explicit_extern_static_warning, newdecl);
2826 if (olddecl != NULL_TREE)
2827 cp_pedwarn_at ("previous declaration of `%D'", olddecl);
2832 /* Handle when a new declaration NEWDECL has the same name as an old
2833 one OLDDECL in the same binding contour. Prints an error message
2836 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2837 Otherwise, return 0. */
2840 duplicate_decls (newdecl, olddecl)
2841 tree newdecl, olddecl;
2843 extern struct obstack permanent_obstack;
2844 unsigned olddecl_uid = DECL_UID (olddecl);
2845 int olddecl_friend = 0, types_match = 0;
2846 int new_defines_function = 0;
2848 if (newdecl == olddecl)
2851 types_match = decls_match (newdecl, olddecl);
2853 /* If either the type of the new decl or the type of the old decl is an
2854 error_mark_node, then that implies that we have already issued an
2855 error (earlier) for some bogus type specification, and in that case,
2856 it is rather pointless to harass the user with yet more error message
2857 about the same declaration, so just pretend the types match here. */
2858 if (TREE_TYPE (newdecl) == error_mark_node
2859 || TREE_TYPE (olddecl) == error_mark_node)
2862 /* Check for redeclaration and other discrepancies. */
2863 if (TREE_CODE (olddecl) == FUNCTION_DECL
2864 && DECL_ARTIFICIAL (olddecl)
2865 && (DECL_BUILT_IN (olddecl) || DECL_BUILT_IN_NONANSI (olddecl)))
2867 /* If you declare a built-in or predefined function name as static,
2868 the old definition is overridden, but optionally warn this was a
2869 bad choice of name. Ditto for overloads. */
2870 if (! TREE_PUBLIC (newdecl)
2871 || (TREE_CODE (newdecl) == FUNCTION_DECL
2872 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)))
2875 cp_warning ("shadowing %s function `%#D'",
2876 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
2878 /* Discard the old built-in function. */
2881 else if (! types_match)
2883 if (TREE_CODE (newdecl) != FUNCTION_DECL)
2885 /* If the built-in is not ansi, then programs can override
2886 it even globally without an error. */
2887 if (! DECL_BUILT_IN (olddecl))
2888 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2892 cp_error ("declaration of `%#D'", newdecl);
2893 cp_error ("conflicts with built-in declaration `%#D'",
2899 cp_warning ("declaration of `%#D'", newdecl);
2900 cp_warning ("conflicts with built-in declaration `%#D'",
2904 else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
2906 if ((TREE_CODE (olddecl) == TYPE_DECL && DECL_ARTIFICIAL (olddecl)
2907 && TREE_CODE (newdecl) != TYPE_DECL
2908 && ! (TREE_CODE (newdecl) == TEMPLATE_DECL
2909 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL))
2910 || (TREE_CODE (newdecl) == TYPE_DECL && DECL_ARTIFICIAL (newdecl)
2911 && TREE_CODE (olddecl) != TYPE_DECL
2912 && ! (TREE_CODE (olddecl) == TEMPLATE_DECL
2913 && (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl))
2916 /* We do nothing special here, because C++ does such nasty
2917 things with TYPE_DECLs. Instead, just let the TYPE_DECL
2918 get shadowed, and know that if we need to find a TYPE_DECL
2919 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
2920 slot of the identifier. */
2924 if ((TREE_CODE (newdecl) == FUNCTION_DECL
2925 && DECL_FUNCTION_TEMPLATE_P (olddecl))
2926 || (TREE_CODE (olddecl) == FUNCTION_DECL
2927 && DECL_FUNCTION_TEMPLATE_P (newdecl)))
2930 cp_error ("`%#D' redeclared as different kind of symbol", newdecl);
2931 if (TREE_CODE (olddecl) == TREE_LIST)
2932 olddecl = TREE_VALUE (olddecl);
2933 cp_error_at ("previous declaration of `%#D'", olddecl);
2935 /* New decl is completely inconsistent with the old one =>
2936 tell caller to replace the old one. */
2940 else if (!types_match)
2942 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2944 /* The name of a class template may not be declared to refer to
2945 any other template, class, function, object, namespace, value,
2946 or type in the same scope. */
2947 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
2948 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2950 cp_error ("declaration of template `%#D'", newdecl);
2951 cp_error_at ("conflicts with previous declaration `%#D'",
2954 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
2955 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
2956 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
2957 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))))
2958 && comp_template_parms (DECL_TEMPLATE_PARMS (newdecl),
2959 DECL_TEMPLATE_PARMS (olddecl)))
2961 cp_error ("new declaration `%#D'", newdecl);
2962 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2966 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2968 if (DECL_LANGUAGE (newdecl) == lang_c
2969 && DECL_LANGUAGE (olddecl) == lang_c)
2971 cp_error ("declaration of C function `%#D' conflicts with",
2973 cp_error_at ("previous declaration `%#D' here", olddecl);
2975 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
2976 TYPE_ARG_TYPES (TREE_TYPE (olddecl))))
2978 cp_error ("new declaration `%#D'", newdecl);
2979 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2985 /* Already complained about this, so don't do so again. */
2986 else if (current_class_type == NULL_TREE
2987 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type)
2989 cp_error ("conflicting types for `%#D'", newdecl);
2990 cp_error_at ("previous declaration as `%#D'", olddecl);
2993 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2994 && ((DECL_TEMPLATE_SPECIALIZATION (olddecl)
2995 && (!DECL_TEMPLATE_INFO (newdecl)
2996 || (DECL_TI_TEMPLATE (newdecl)
2997 != DECL_TI_TEMPLATE (olddecl))))
2998 || (DECL_TEMPLATE_SPECIALIZATION (newdecl)
2999 && (!DECL_TEMPLATE_INFO (olddecl)
3000 || (DECL_TI_TEMPLATE (olddecl)
3001 != DECL_TI_TEMPLATE (newdecl))))))
3002 /* It's OK to have a template specialization and a non-template
3003 with the same type, or to have specializations of two
3004 different templates with the same type. Note that if one is a
3005 specialization, and the other is an instantiation of the same
3006 template, that we do not exit at this point. That situation
3007 can occur if we instantiate a template class, and then
3008 specialize one of its methods. This situation is legal, but
3009 the declarations must be merged in the usual way. */
3011 else if (TREE_CODE (newdecl) == FUNCTION_DECL
3012 && ((DECL_TEMPLATE_INSTANTIATION (olddecl)
3013 && !DECL_USE_TEMPLATE (newdecl))
3014 || (DECL_TEMPLATE_INSTANTIATION (newdecl)
3015 && !DECL_USE_TEMPLATE (olddecl))))
3016 /* One of the declarations is a template instantiation, and the
3017 other is not a template at all. That's OK. */
3019 else if (TREE_CODE (newdecl) == NAMESPACE_DECL
3020 && DECL_NAMESPACE_ALIAS (newdecl)
3021 && DECL_NAMESPACE_ALIAS (newdecl) == DECL_NAMESPACE_ALIAS (olddecl))
3022 /* Redeclaration of namespace alias, ignore it. */
3026 char *errmsg = redeclaration_error_message (newdecl, olddecl);
3029 cp_error (errmsg, newdecl);
3030 if (DECL_NAME (olddecl) != NULL_TREE)
3031 cp_error_at ((DECL_INITIAL (olddecl)
3032 && namespace_bindings_p ())
3033 ? "`%#D' previously defined here"
3034 : "`%#D' previously declared here", olddecl);
3036 else if (TREE_CODE (olddecl) == FUNCTION_DECL
3037 && DECL_INITIAL (olddecl) != NULL_TREE
3038 && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE
3039 && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE)
3041 /* Prototype decl follows defn w/o prototype. */
3042 cp_warning_at ("prototype for `%#D'", newdecl);
3043 cp_warning_at ("follows non-prototype definition here", olddecl);
3045 else if (TREE_CODE (olddecl) == FUNCTION_DECL
3046 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
3048 /* extern "C" int foo ();
3049 int foo () { bar (); }
3051 if (current_lang_stack == current_lang_base)
3052 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
3055 cp_error_at ("previous declaration of `%#D' with %L linkage",
3056 olddecl, DECL_LANGUAGE (olddecl));
3057 cp_error ("conflicts with new declaration with %L linkage",
3058 DECL_LANGUAGE (newdecl));
3062 if (DECL_LANG_SPECIFIC (olddecl) && DECL_USE_TEMPLATE (olddecl))
3064 else if (TREE_CODE (olddecl) == FUNCTION_DECL)
3066 tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
3067 tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
3070 if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
3071 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
3073 for (; t1 && t1 != void_list_node;
3074 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
3075 if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
3077 if (1 == simple_cst_equal (TREE_PURPOSE (t1),
3082 cp_pedwarn ("default argument given for parameter %d of `%#D'",
3084 cp_pedwarn_at ("after previous specification in `%#D'",
3090 cp_error ("default argument given for parameter %d of `%#D'",
3092 cp_error_at ("after previous specification in `%#D'",
3097 if (DECL_THIS_INLINE (newdecl) && ! DECL_THIS_INLINE (olddecl)
3098 && TREE_ADDRESSABLE (olddecl) && warn_inline)
3100 cp_warning ("`%#D' was used before it was declared inline",
3102 cp_warning_at ("previous non-inline declaration here",
3108 /* If new decl is `static' and an `extern' was seen previously,
3110 warn_extern_redeclared_static (newdecl, olddecl);
3112 /* We have committed to returning 1 at this point. */
3113 if (TREE_CODE (newdecl) == FUNCTION_DECL)
3115 /* Now that functions must hold information normally held
3116 by field decls, there is extra work to do so that
3117 declaration information does not get destroyed during
3119 if (DECL_VINDEX (olddecl))
3120 DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
3121 if (DECL_CONTEXT (olddecl))
3122 DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
3123 if (DECL_CLASS_CONTEXT (olddecl))
3124 DECL_CLASS_CONTEXT (newdecl) = DECL_CLASS_CONTEXT (olddecl);
3125 if (DECL_PENDING_INLINE_INFO (newdecl) == (struct pending_inline *)0)
3126 DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
3127 DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
3128 DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
3129 DECL_ABSTRACT_VIRTUAL_P (newdecl) |= DECL_ABSTRACT_VIRTUAL_P (olddecl);
3130 DECL_VIRTUAL_P (newdecl) |= DECL_VIRTUAL_P (olddecl);
3131 DECL_NEEDS_FINAL_OVERRIDER_P (newdecl) |= DECL_NEEDS_FINAL_OVERRIDER_P (olddecl);
3132 new_defines_function = DECL_INITIAL (newdecl) != NULL_TREE;
3134 /* Optionally warn about more than one declaration for the same
3135 name, but don't warn about a function declaration followed by a
3137 if (warn_redundant_decls && ! DECL_ARTIFICIAL (olddecl)
3138 && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
3139 /* Don't warn about extern decl followed by definition. */
3140 && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl))
3141 /* Don't warn about friends, let add_friend take care of it. */
3142 && ! DECL_FRIEND_P (newdecl))
3144 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl);
3145 cp_warning_at ("previous declaration of `%D'", olddecl);
3149 /* Deal with C++: must preserve virtual function table size. */
3150 if (TREE_CODE (olddecl) == TYPE_DECL)
3152 register tree newtype = TREE_TYPE (newdecl);
3153 register tree oldtype = TREE_TYPE (olddecl);
3155 if (newtype != error_mark_node && oldtype != error_mark_node
3156 && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
3158 CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype);
3159 CLASSTYPE_FRIEND_CLASSES (newtype)
3160 = CLASSTYPE_FRIEND_CLASSES (oldtype);
3164 /* Copy all the DECL_... slots specified in the new decl
3165 except for any that we copy here from the old type. */
3166 DECL_MACHINE_ATTRIBUTES (newdecl)
3167 = merge_machine_decl_attributes (olddecl, newdecl);
3169 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
3171 if (! duplicate_decls (DECL_TEMPLATE_RESULT (newdecl),
3172 DECL_TEMPLATE_RESULT (olddecl)))
3173 cp_error ("invalid redeclaration of %D", newdecl);
3174 TREE_TYPE (olddecl) = TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl));
3175 DECL_TEMPLATE_SPECIALIZATIONS (olddecl)
3176 = chainon (DECL_TEMPLATE_SPECIALIZATIONS (olddecl),
3177 DECL_TEMPLATE_SPECIALIZATIONS (newdecl));
3184 /* Automatically handles default parameters. */
3185 tree oldtype = TREE_TYPE (olddecl);
3188 /* Make sure we put the new type in the same obstack as the old one. */
3190 push_obstacks (TYPE_OBSTACK (oldtype), TYPE_OBSTACK (oldtype));
3193 push_obstacks_nochange ();
3194 end_temporary_allocation ();
3197 /* Merge the data types specified in the two decls. */
3198 newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
3200 if (TREE_CODE (newdecl) == VAR_DECL)
3201 DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
3202 /* Do this after calling `common_type' so that default
3203 parameters don't confuse us. */
3204 else if (TREE_CODE (newdecl) == FUNCTION_DECL
3205 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))
3206 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl))))
3208 TREE_TYPE (newdecl) = build_exception_variant (newtype,
3209 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)));
3210 TREE_TYPE (olddecl) = build_exception_variant (newtype,
3211 TYPE_RAISES_EXCEPTIONS (oldtype));
3213 if ((pedantic || ! DECL_IN_SYSTEM_HEADER (olddecl))
3214 && DECL_SOURCE_LINE (olddecl) != 0
3216 && ! compexcepttypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
3218 cp_pedwarn ("declaration of `%D' throws different exceptions",
3220 cp_pedwarn_at ("previous declaration here", olddecl);
3223 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
3225 /* Lay the type out, unless already done. */
3226 if (newtype != canonical_type_variant (oldtype)
3227 && TREE_TYPE (newdecl) != error_mark_node
3228 && !(processing_template_decl && uses_template_parms (newdecl)))
3229 layout_type (TREE_TYPE (newdecl));
3231 if ((TREE_CODE (newdecl) == VAR_DECL
3232 || TREE_CODE (newdecl) == PARM_DECL
3233 || TREE_CODE (newdecl) == RESULT_DECL
3234 || TREE_CODE (newdecl) == FIELD_DECL
3235 || TREE_CODE (newdecl) == TYPE_DECL)
3236 && !(processing_template_decl && uses_template_parms (newdecl)))
3237 layout_decl (newdecl, 0);
3239 /* Merge the type qualifiers. */
3240 if (TREE_READONLY (newdecl))
3241 TREE_READONLY (olddecl) = 1;
3242 if (TREE_THIS_VOLATILE (newdecl))
3243 TREE_THIS_VOLATILE (olddecl) = 1;
3245 /* Merge the initialization information. */
3246 if (DECL_INITIAL (newdecl) == NULL_TREE
3247 && DECL_INITIAL (olddecl) != NULL_TREE)
3249 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
3250 DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl);
3251 DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl);
3252 if (DECL_LANG_SPECIFIC (newdecl)
3253 && DECL_LANG_SPECIFIC (olddecl))
3254 DECL_SAVED_TREE (newdecl) = DECL_SAVED_TREE (olddecl);
3257 /* Merge the section attribute.
3258 We want to issue an error if the sections conflict but that must be
3259 done later in decl_attributes since we are called before attributes
3261 if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
3262 DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
3264 /* Keep the old rtl since we can safely use it, unless it's the
3265 call to abort() used for abstract virtuals. */
3266 if ((DECL_LANG_SPECIFIC (olddecl)
3267 && !DECL_ABSTRACT_VIRTUAL_P (olddecl))
3268 || DECL_RTL (olddecl) != DECL_RTL (abort_fndecl))
3269 DECL_RTL (newdecl) = DECL_RTL (olddecl);
3273 /* If cannot merge, then use the new type and qualifiers,
3274 and don't preserve the old rtl. */
3277 /* Clean out any memory we had of the old declaration. */
3278 tree oldstatic = value_member (olddecl, static_aggregates);
3280 TREE_VALUE (oldstatic) = error_mark_node;
3282 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
3283 TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
3284 TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
3285 TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
3288 /* Merge the storage class information. */
3289 DECL_WEAK (newdecl) |= DECL_WEAK (olddecl);
3290 DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl);
3291 TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
3292 TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
3293 if (! DECL_EXTERNAL (olddecl))
3294 DECL_EXTERNAL (newdecl) = 0;
3296 if (DECL_LANG_SPECIFIC (newdecl) && DECL_LANG_SPECIFIC (olddecl))
3298 DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
3299 DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
3300 DECL_COMDAT (newdecl) |= DECL_COMDAT (olddecl);
3301 /* Don't really know how much of the language-specific
3302 values we should copy from old to new. */
3303 DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
3304 DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl);
3305 DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
3306 DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
3307 olddecl_friend = DECL_FRIEND_P (olddecl);
3310 if (TREE_CODE (newdecl) == FUNCTION_DECL)
3312 if (DECL_TEMPLATE_INSTANTIATION (olddecl)
3313 && !DECL_TEMPLATE_INSTANTIATION (newdecl))
3315 /* If newdecl is not a specialization, then it is not a
3316 template-related function at all. And that means that we
3317 shoud have exited above, returning 0. */
3318 my_friendly_assert (DECL_TEMPLATE_SPECIALIZATION (newdecl),
3321 if (TREE_USED (olddecl))
3322 /* From [temp.expl.spec]:
3324 If a template, a member template or the member of a class
3325 template is explicitly specialized then that
3326 specialization shall be declared before the first use of
3327 that specialization that would cause an implicit
3328 instantiation to take place, in every translation unit in
3329 which such a use occurs. */
3330 cp_error ("explicit specialization of %D after first use",
3333 SET_DECL_TEMPLATE_SPECIALIZATION (olddecl);
3335 DECL_THIS_INLINE (newdecl) |= DECL_THIS_INLINE (olddecl);
3337 /* If either decl says `inline', this fn is inline, unless its
3338 definition was passed already. */
3339 if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE)
3340 DECL_INLINE (olddecl) = 1;
3341 DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
3345 DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl);
3346 DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl);
3347 DECL_RTL (olddecl) = DECL_RTL (newdecl);
3349 if (! types_match || new_defines_function)
3351 /* These need to be copied so that the names are available. */
3352 DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
3353 DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
3355 if (new_defines_function)
3356 /* If defining a function declared with other language
3357 linkage, use the previously declared language linkage. */
3358 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
3361 /* If redeclaring a builtin function, and not a definition,
3362 it stays built in. */
3363 if (DECL_BUILT_IN (olddecl))
3365 DECL_BUILT_IN (newdecl) = 1;
3366 DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
3367 /* If we're keeping the built-in definition, keep the rtl,
3368 regardless of declaration matches. */
3369 DECL_RTL (newdecl) = DECL_RTL (olddecl);
3372 DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl);
3374 DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
3375 if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl)))
3376 /* Previously saved insns go together with
3377 the function's previous definition. */
3378 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
3379 /* Don't clear out the arguments if we're redefining a function. */
3380 if (DECL_ARGUMENTS (olddecl))
3381 DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
3383 if (DECL_LANG_SPECIFIC (olddecl))
3384 DECL_MAIN_VARIANT (newdecl) = DECL_MAIN_VARIANT (olddecl);
3387 if (TREE_CODE (newdecl) == NAMESPACE_DECL)
3389 NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
3392 /* Now preserve various other info from the definition. */
3393 TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
3394 TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
3395 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
3396 DECL_ASSEMBLER_NAME (newdecl) = DECL_ASSEMBLER_NAME (olddecl);
3398 if (TREE_CODE (newdecl) == FUNCTION_DECL)
3401 struct lang_decl *ol = DECL_LANG_SPECIFIC (olddecl);
3402 struct lang_decl *nl = DECL_LANG_SPECIFIC (newdecl);
3404 function_size = sizeof (struct tree_decl);
3406 bcopy ((char *) newdecl + sizeof (struct tree_common),
3407 (char *) olddecl + sizeof (struct tree_common),
3408 function_size - sizeof (struct tree_common));
3410 /* Can we safely free the storage used by newdecl? */
3412 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
3413 & ~ obstack_alignment_mask (&permanent_obstack))
3415 if (DECL_TEMPLATE_INSTANTIATION (newdecl))
3417 /* If newdecl is a template instantiation, it is possible that
3418 the following sequence of events has occurred:
3420 o A friend function was declared in a class template. The
3421 class template was instantiated.
3423 o The instantiation of the friend declaration was
3424 recorded on the instantiation list, and is newdecl.
3426 o Later, however, instantiate_class_template called pushdecl
3427 on the newdecl to perform name injection. But, pushdecl in
3428 turn called duplicate_decls when it discovered that another
3429 declaration of a global function with the same name already
3432 o Here, in duplicate_decls, we decided to clobber newdecl.
3434 If we're going to do that, we'd better make sure that
3435 olddecl, and not newdecl, is on the list of
3436 instantiations so that if we try to do the instantiation
3437 again we won't get the clobbered declaration. */
3439 tree tmpl = DECL_TI_TEMPLATE (newdecl);
3440 tree decls = DECL_TEMPLATE_SPECIALIZATIONS (tmpl);
3442 for (; decls; decls = TREE_CHAIN (decls))
3443 if (TREE_VALUE (decls) == newdecl)
3444 TREE_VALUE (decls) = olddecl;
3447 if (((char *)newdecl + ROUND (function_size) == (char *)nl
3448 && ((char *)newdecl + ROUND (function_size)
3449 + ROUND (sizeof (struct lang_decl))
3450 == obstack_next_free (&permanent_obstack)))
3451 || ((char *)newdecl + ROUND (function_size)
3452 == obstack_next_free (&permanent_obstack)))
3454 DECL_MAIN_VARIANT (newdecl) = olddecl;
3455 DECL_LANG_SPECIFIC (olddecl) = ol;
3456 bcopy ((char *)nl, (char *)ol, sizeof (struct lang_decl));
3458 obstack_free (&permanent_obstack, newdecl);
3460 else if (LANG_DECL_PERMANENT (ol) && ol != nl)
3462 if (DECL_MAIN_VARIANT (olddecl) == olddecl)
3464 /* Save these lang_decls that would otherwise be lost. */
3465 extern tree free_lang_decl_chain;
3466 tree free_lang_decl = (tree) ol;
3468 if (DECL_LANG_SPECIFIC (olddecl) == ol)
3471 TREE_CHAIN (free_lang_decl) = free_lang_decl_chain;
3472 free_lang_decl_chain = free_lang_decl;
3476 /* Storage leak. */;
3482 bcopy ((char *) newdecl + sizeof (struct tree_common),
3483 (char *) olddecl + sizeof (struct tree_common),
3484 sizeof (struct tree_decl) - sizeof (struct tree_common)
3485 + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *));
3488 DECL_UID (olddecl) = olddecl_uid;
3490 DECL_FRIEND_P (olddecl) = 1;
3492 /* NEWDECL contains the merged attribute lists.
3493 Update OLDDECL to be the same. */
3494 DECL_MACHINE_ATTRIBUTES (olddecl) = DECL_MACHINE_ATTRIBUTES (newdecl);
3499 /* Record a decl-node X as belonging to the current lexical scope.
3500 Check for errors (such as an incompatible declaration for the same
3501 name already seen in the same scope).
3503 Returns either X or an old decl for the same name.
3504 If an old decl is returned, it may have been smashed
3505 to agree with what X says. */
3512 register tree name = DECL_ASSEMBLER_NAME (x);
3513 int need_new_binding = 1;
3515 if (current_function_decl && x != current_function_decl
3516 /* A local declaration for a function doesn't constitute nesting. */
3517 && (TREE_CODE (x) != FUNCTION_DECL || DECL_INITIAL (x))
3518 /* Don't change DECL_CONTEXT of virtual methods. */
3519 && (TREE_CODE (x) != FUNCTION_DECL || !DECL_VIRTUAL_P (x))
3520 && !DECL_CONTEXT (x))
3521 DECL_CONTEXT (x) = current_function_decl;
3522 if (!DECL_CONTEXT (x))
3523 DECL_CONTEXT (x) = FROB_CONTEXT (current_namespace);
3525 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3526 compiler wants to use. */
3527 if (TREE_CODE (x) == TYPE_DECL || TREE_CODE (x) == VAR_DECL
3528 || TREE_CODE (x) == NAMESPACE_DECL || TREE_CODE (x) == TEMPLATE_TYPE_PARM
3529 || TREE_CODE (x) == TEMPLATE_TEMPLATE_PARM)
3530 name = DECL_NAME (x);
3535 /* Not needed...see below. */
3539 if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
3540 name = TREE_OPERAND (name, 0);
3542 /* Namespace-scoped variables are not found in the current level. */
3543 if (TREE_CODE (x) == VAR_DECL && DECL_NAMESPACE_SCOPE_P (x))
3544 t = namespace_binding (name, DECL_CONTEXT (x));
3546 t = lookup_name_current_level (name);
3547 if (t == error_mark_node)
3549 /* error_mark_node is 0 for a while during initialization! */
3551 cp_error_at ("`%#D' used prior to declaration", x);
3554 else if (t != NULL_TREE)
3557 /* This is turned off until I have time to do it right (bpk). */
3558 /* With the code below that uses it... */
3559 file = DECL_SOURCE_FILE (t);
3560 line = DECL_SOURCE_LINE (t);
3562 if (TREE_CODE (t) == PARM_DECL)
3564 if (DECL_CONTEXT (t) == NULL_TREE)
3565 fatal ("parse errors have confused me too much");
3567 /* Check for duplicate params. */
3568 if (duplicate_decls (x, t))
3571 else if (((TREE_CODE (x) == FUNCTION_DECL && DECL_LANGUAGE (x) == lang_c)
3572 || DECL_FUNCTION_TEMPLATE_P (x))
3573 && is_overloaded_fn (t))
3574 /* Don't do anything just yet. */;
3575 else if (t == wchar_decl_node)
3577 if (pedantic && ! DECL_IN_SYSTEM_HEADER (x))
3578 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x));
3580 /* Throw away the redeclaration. */
3583 else if (TREE_CODE (t) != TREE_CODE (x))
3585 if (duplicate_decls (x, t))
3588 else if (duplicate_decls (x, t))
3591 /* This is turned off until I have time to do it right (bpk). */
3593 /* Also warn if they did a prototype with `static' on it, but
3594 then later left the `static' off. */
3595 if (! TREE_PUBLIC (name) && TREE_PUBLIC (x))
3597 if (DECL_LANG_SPECIFIC (t) && DECL_FRIEND_P (t))
3602 cp_warning ("`static' missing from declaration of `%D'",
3604 warning_with_file_and_line (file, line,
3605 "previous declaration of `%s'",
3606 decl_as_string (t, 0));
3609 /* Now fix things so it'll do what they expect. */
3610 if (current_function_decl)
3611 TREE_PUBLIC (current_function_decl) = 0;
3613 /* Due to interference in memory reclamation (X may be
3614 obstack-deallocated at this point), we must guard against
3615 one really special case. [jason: This should be handled
3616 by start_function] */
3617 if (current_function_decl == x)
3618 current_function_decl = t;
3620 if (TREE_CODE (t) == TYPE_DECL)
3621 SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t));
3622 else if (TREE_CODE (t) == FUNCTION_DECL)
3623 check_default_args (t);
3627 else if (DECL_MAIN_P (x))
3629 /* A redeclaration of main, but not a duplicate of the
3634 This function shall not be overloaded. */
3635 cp_error_at ("invalid redeclaration of `%D'", t);
3636 cp_error ("as `%D'", x);
3637 /* We don't try to push this declaration since that
3643 check_template_shadow (x);
3645 if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_FUNCTION_MEMBER_P (x))
3647 t = push_overloaded_decl (x, 1);
3648 if (t != x || DECL_LANGUAGE (x) == lang_c)
3650 if (!namespace_bindings_p ())
3651 /* We do not need to create a binding for this name;
3652 push_overloaded_decl will have already done so if
3654 need_new_binding = 0;
3656 else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_NAMESPACE_SCOPE_P (x))
3657 return push_overloaded_decl (x, 0);
3659 /* If declaring a type as a typedef, copy the type (unless we're
3660 at line 0), and install this TYPE_DECL as the new type's typedef
3661 name. See the extensive comment in ../c-decl.c (pushdecl). */
3662 if (TREE_CODE (x) == TYPE_DECL)
3664 tree type = TREE_TYPE (x);
3665 if (DECL_SOURCE_LINE (x) == 0)
3667 if (TYPE_NAME (type) == 0)
3668 TYPE_NAME (type) = x;
3670 else if (type != error_mark_node && TYPE_NAME (type) != x
3671 /* We don't want to copy the type when all we're
3672 doing is making a TYPE_DECL for the purposes of
3674 && (!TYPE_NAME (type)
3675 || TYPE_NAME (type) != DECL_ABSTRACT_ORIGIN (x)))
3677 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
3679 DECL_ORIGINAL_TYPE (x) = type;
3680 type = build_type_copy (type);
3681 TYPE_STUB_DECL (type) = TYPE_STUB_DECL (DECL_ORIGINAL_TYPE (x));
3682 TYPE_NAME (type) = x;
3683 TREE_TYPE (x) = type;
3688 if (type != error_mark_node
3690 && TYPE_IDENTIFIER (type))
3691 set_identifier_type_value_with_scope (DECL_NAME (x), type,
3692 current_binding_level);
3696 /* Multiple external decls of the same identifier ought to match.
3698 We get warnings about inline functions where they are defined.
3699 We get warnings about other functions from push_overloaded_decl.
3701 Avoid duplicate warnings where they are used. */
3702 if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL)
3706 if (IDENTIFIER_NAMESPACE_VALUE (name) != NULL_TREE
3707 && (DECL_EXTERNAL (IDENTIFIER_NAMESPACE_VALUE (name))
3708 || TREE_PUBLIC (IDENTIFIER_NAMESPACE_VALUE (name))))
3709 decl = IDENTIFIER_NAMESPACE_VALUE (name);
3714 /* If different sort of thing, we already gave an error. */
3715 && TREE_CODE (decl) == TREE_CODE (x)
3716 && !same_type_p (TREE_TYPE (x), TREE_TYPE (decl)))
3718 cp_pedwarn ("type mismatch with previous external decl", x);
3719 cp_pedwarn_at ("previous external decl of `%#D'", decl);
3723 /* This name is new in its binding level.
3724 Install the new declaration and return it. */
3725 if (namespace_bindings_p ())
3727 /* Install a global value. */
3729 /* If the first global decl has external linkage,
3730 warn if we later see static one. */
3731 if (IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE && TREE_PUBLIC (x))
3732 TREE_PUBLIC (name) = 1;
3734 if (!(TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3737 if (TREE_CODE (x) == FUNCTION_DECL)
3739 ((IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE)
3740 || (IDENTIFIER_GLOBAL_VALUE (name) == x), 378);
3741 SET_IDENTIFIER_NAMESPACE_VALUE (name, x);
3744 /* Don't forget if the function was used via an implicit decl. */
3745 if (IDENTIFIER_IMPLICIT_DECL (name)
3746 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name)))
3749 /* Don't forget if its address was taken in that way. */
3750 if (IDENTIFIER_IMPLICIT_DECL (name)
3751 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name)))
3752 TREE_ADDRESSABLE (x) = 1;
3754 /* Warn about mismatches against previous implicit decl. */
3755 if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE
3756 /* If this real decl matches the implicit, don't complain. */
3757 && ! (TREE_CODE (x) == FUNCTION_DECL
3758 && TREE_TYPE (TREE_TYPE (x)) == integer_type_node))
3760 ("`%D' was previously implicitly declared to return `int'", x);
3762 /* If new decl is `static' and an `extern' was seen previously,
3764 if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t))
3765 warn_extern_redeclared_static (x, t);
3769 /* Here to install a non-global value. */
3770 tree oldlocal = IDENTIFIER_VALUE (name);
3771 tree oldglobal = IDENTIFIER_NAMESPACE_VALUE (name);
3773 if (need_new_binding)
3775 push_local_binding (name, x);
3776 /* Because push_local_binding will hook X on to the
3777 current_binding_level's name list, we don't want to
3778 do that again below. */
3779 need_new_binding = 0;
3782 /* If this is a TYPE_DECL, push it into the type value slot. */
3783 if (TREE_CODE (x) == TYPE_DECL)
3784 set_identifier_type_value_with_scope (name, TREE_TYPE (x),
3785 current_binding_level);
3787 /* Clear out any TYPE_DECL shadowed by a namespace so that
3788 we won't think this is a type. The C struct hack doesn't
3789 go through namespaces. */
3790 if (TREE_CODE (x) == NAMESPACE_DECL)
3791 set_identifier_type_value_with_scope (name, NULL_TREE,
3792 current_binding_level);
3794 /* If this is an extern function declaration, see if we
3795 have a global definition or declaration for the function. */
3796 if (oldlocal == NULL_TREE
3797 && DECL_EXTERNAL (x)
3798 && oldglobal != NULL_TREE
3799 && TREE_CODE (x) == FUNCTION_DECL
3800 && TREE_CODE (oldglobal) == FUNCTION_DECL)
3802 /* We have one. Their types must agree. */
3803 if (decls_match (x, oldglobal))
3807 cp_warning ("extern declaration of `%#D' doesn't match", x);
3808 cp_warning_at ("global declaration `%#D'", oldglobal);
3811 /* If we have a local external declaration,
3812 and no file-scope declaration has yet been seen,
3813 then if we later have a file-scope decl it must not be static. */
3814 if (oldlocal == NULL_TREE
3815 && oldglobal == NULL_TREE
3816 && DECL_EXTERNAL (x)
3818 TREE_PUBLIC (name) = 1;
3820 if (DECL_FROM_INLINE (x))
3821 /* Inline decls shadow nothing. */;
3823 /* Warn if shadowing an argument at the top level of the body. */
3824 else if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x)
3825 && TREE_CODE (oldlocal) == PARM_DECL
3826 && TREE_CODE (x) != PARM_DECL)
3828 /* Go to where the parms should be and see if we
3830 struct binding_level *b = current_binding_level->level_chain;
3836 if (b->parm_flag == 1)
3837 cp_error ("declaration of `%#D' shadows a parameter", name);
3839 else if (warn_shadow && oldlocal != NULL_TREE
3840 && current_binding_level->is_for_scope
3841 && !DECL_DEAD_FOR_LOCAL (oldlocal))
3843 warning ("variable `%s' shadows local",
3844 IDENTIFIER_POINTER (name));
3845 cp_warning_at (" this is the shadowed declaration", oldlocal);
3847 /* Maybe warn if shadowing something else. */
3848 else if (warn_shadow && !DECL_EXTERNAL (x)
3849 /* No shadow warnings for internally generated vars. */
3850 && ! DECL_ARTIFICIAL (x)
3851 /* No shadow warnings for vars made for inlining. */
3852 && ! DECL_FROM_INLINE (x))
3854 char *warnstring = NULL;
3856 if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL)
3857 warnstring = "declaration of `%s' shadows a parameter";
3858 else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE
3859 && current_class_ptr
3860 && !TREE_STATIC (name))
3861 warnstring = "declaration of `%s' shadows a member of `this'";
3862 else if (oldlocal != NULL_TREE)
3863 warnstring = "declaration of `%s' shadows previous local";
3864 else if (oldglobal != NULL_TREE)
3865 /* XXX shadow warnings in outer-more namespaces */
3866 warnstring = "declaration of `%s' shadows global declaration";
3869 warning (warnstring, IDENTIFIER_POINTER (name));
3873 if (TREE_CODE (x) == FUNCTION_DECL)
3874 check_default_args (x);
3876 /* Keep count of variables in this level with incomplete type. */
3877 if (TREE_CODE (x) == VAR_DECL
3878 && TREE_TYPE (x) != error_mark_node
3879 && ((TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE
3880 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE))
3881 /* RTTI TD entries are created while defining the type_info. */
3882 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x))
3883 && TYPE_BEING_DEFINED (TREE_TYPE (x)))))
3884 current_binding_level->incomplete
3885 = tree_cons (NULL_TREE, x, current_binding_level->incomplete);
3888 if (need_new_binding)
3890 /* Put decls on list in reverse order.
3891 We will reverse them later if necessary. */
3892 TREE_CHAIN (x) = current_binding_level->names;
3893 current_binding_level->names = x;
3894 if (! (current_binding_level != global_binding_level
3895 || TREE_PERMANENT (x)))
3896 my_friendly_abort (124);
3902 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3903 caller to set DECL_CONTEXT properly. */
3906 pushdecl_with_scope (x, level)
3908 struct binding_level *level;
3910 register struct binding_level *b;
3911 tree function_decl = current_function_decl;
3913 current_function_decl = NULL_TREE;
3914 if (level->parm_flag == 2)
3916 b = class_binding_level;
3917 class_binding_level = level;
3918 pushdecl_class_level (x);
3919 class_binding_level = b;
3923 b = current_binding_level;
3924 current_binding_level = level;
3926 current_binding_level = b;
3928 current_function_decl = function_decl;
3932 /* Like pushdecl, only it places X in the current namespace,
3936 pushdecl_namespace_level (x)
3939 register struct binding_level *b = inner_binding_level;
3942 t = pushdecl_with_scope (x, NAMESPACE_LEVEL (current_namespace));
3944 /* Now, the type_shadowed stack may screw us. Munge it so it does
3946 if (TREE_CODE (x) == TYPE_DECL)
3948 tree name = DECL_NAME (x);
3950 tree *ptr = (tree *)0;
3951 for (; b != global_binding_level; b = b->level_chain)
3953 tree shadowed = b->type_shadowed;
3954 for (; shadowed; shadowed = TREE_CHAIN (shadowed))
3955 if (TREE_PURPOSE (shadowed) == name)
3957 ptr = &TREE_VALUE (shadowed);
3958 /* Can't break out of the loop here because sometimes
3959 a binding level will have duplicate bindings for
3960 PT names. It's gross, but I haven't time to fix it. */
3963 newval = TREE_TYPE (x);
3964 if (ptr == (tree *)0)
3966 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3967 up here if this is changed to an assertion. --KR */
3968 SET_IDENTIFIER_TYPE_VALUE (name, newval);
3978 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3982 pushdecl_top_level (x)
3985 tree cur_namespace = current_namespace;
3986 current_namespace = global_namespace;
3987 x = pushdecl_namespace_level (x);
3988 current_namespace = cur_namespace;
3992 /* Make the declaration of X appear in CLASS scope. */
3995 pushdecl_class_level (x)
3998 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3999 scope looks for the pre-mangled name. */
4000 register tree name = DECL_NAME (x);
4004 if (TYPE_BEING_DEFINED (current_class_type))
4006 /* A name N used in a class S shall refer to the same declaration
4007 in its context and when re-evaluated in the completed scope of S.
4008 Types, enums, and static vars are checked here; other
4009 members are checked in finish_struct. */
4010 tree icv = IDENTIFIER_CLASS_VALUE (name);
4012 /* This should match check_member_decl_is_same_in_complete_scope. */
4014 && flag_optional_diags
4015 /* Don't complain about inherited names. */
4016 && id_in_current_class (name)
4017 /* Or shadowed tags. */
4018 && !(DECL_DECLARES_TYPE_P (icv)
4019 && DECL_CONTEXT (icv) == current_class_type))
4021 cp_pedwarn ("declaration of identifier `%D' as `%#D'", name, x);
4022 cp_pedwarn_at ("conflicts with previous use in class as `%#D'",
4026 check_template_shadow (x);
4029 push_class_level_binding (name, x);
4030 if (TREE_CODE (x) == TYPE_DECL)
4031 set_identifier_type_value (name, TREE_TYPE (x));
4036 /* This function is used to push the mangled decls for nested types into
4037 the appropriate scope. Previously pushdecl_top_level was used, but that
4038 is incorrect for members of local classes. */
4041 pushdecl_nonclass_level (x)
4044 struct binding_level *b = current_binding_level;
4046 my_friendly_assert (b->parm_flag != 2, 180);
4049 /* Get out of template binding levels */
4050 while (b->pseudo_global)
4054 pushdecl_with_scope (x, b);
4058 /* Make the declaration(s) of X appear in CLASS scope
4059 under the name NAME. */
4062 push_class_level_binding (name, x)
4066 /* The class_binding_level will be NULL if x is a template
4067 parameter name in a member template. */
4068 if (!class_binding_level)
4071 /* If this declaration shadows a declaration from an enclosing
4072 class, then we will need to restore IDENTIFIER_CLASS_VALUE when
4073 we leave this class. Record the shadowed declaration here. */
4074 maybe_push_cache_obstack ();
4075 class_binding_level->class_shadowed
4076 = tree_cons (name, IDENTIFIER_CLASS_VALUE (name),
4077 class_binding_level->class_shadowed);
4078 TREE_TYPE (class_binding_level->class_shadowed)
4082 /* Put the binding on the stack of bindings for the identifier, and
4083 update IDENTIFIER_CLASS_VALUE. */
4084 push_class_binding (name, x);
4086 obstack_ptr_grow (&decl_obstack, x);
4089 /* Insert another USING_DECL into the current binding level,
4090 returning this declaration. If this is a redeclaration,
4091 do nothing and return NULL_TREE. */
4094 push_using_decl (scope, name)
4100 my_friendly_assert (TREE_CODE (scope) == NAMESPACE_DECL, 383);
4101 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 384);
4102 for (decl = current_binding_level->usings; decl; decl = TREE_CHAIN (decl))
4103 if (DECL_INITIAL (decl) == scope && DECL_NAME (decl) == name)
4107 decl = build_lang_decl (USING_DECL, name, void_type_node);
4108 DECL_INITIAL (decl) = scope;
4109 TREE_CHAIN (decl) = current_binding_level->usings;
4110 current_binding_level->usings = decl;
4114 /* Add namespace to using_directives. Return NULL_TREE if nothing was
4115 changed (i.e. there was already a directive), or the fresh
4116 TREE_LIST otherwise. */
4119 push_using_directive (used)
4122 tree ud = current_binding_level->using_directives;
4123 tree iter, ancestor;
4125 /* Check if we already have this. */
4126 if (purpose_member (used, ud) != NULL_TREE)
4129 /* Recursively add all namespaces used. */
4130 for (iter = DECL_NAMESPACE_USING (used); iter; iter = TREE_CHAIN (iter))
4131 push_using_directive (TREE_PURPOSE (iter));
4133 ancestor = namespace_ancestor (current_decl_namespace (), used);
4134 ud = current_binding_level->using_directives;
4135 ud = perm_tree_cons (used, ancestor, ud);
4136 current_binding_level->using_directives = ud;
4140 /* DECL is a FUNCTION_DECL for a non-member function, which may have
4141 other definitions already in place. We get around this by making
4142 the value of the identifier point to a list of all the things that
4143 want to be referenced by that name. It is then up to the users of
4144 that name to decide what to do with that list.
4146 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
4147 slot. It is dealt with the same way.
4149 The value returned may be a previous declaration if we guessed wrong
4150 about what language DECL should belong to (C or C++). Otherwise,
4151 it's always DECL (and never something that's not a _DECL). */
4154 push_overloaded_decl (decl, forgettable)
4158 tree name = DECL_NAME (decl);
4161 int doing_global = (namespace_bindings_p () || ! forgettable);
4165 old = namespace_binding (name, DECL_CONTEXT (decl));
4166 if (old && TREE_CODE (old) == FUNCTION_DECL
4167 && DECL_ARTIFICIAL (old)
4168 && (DECL_BUILT_IN (old) || DECL_BUILT_IN_NONANSI (old)))
4170 if (duplicate_decls (decl, old))
4176 old = lookup_name_current_level (name);
4180 if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old))
4182 tree t = TREE_TYPE (old);
4183 if (IS_AGGR_TYPE (t) && warn_shadow
4184 && (! DECL_IN_SYSTEM_HEADER (decl)
4185 || ! DECL_IN_SYSTEM_HEADER (old)))
4186 cp_warning ("`%#D' hides constructor for `%#T'", decl, t);
4189 else if (is_overloaded_fn (old))
4193 for (tmp = old; tmp; tmp = OVL_NEXT (tmp))
4194 if (decl == OVL_CURRENT (tmp)
4195 || duplicate_decls (decl, OVL_CURRENT (tmp)))
4196 return OVL_CURRENT (tmp);
4200 cp_error_at ("previous non-function declaration `%#D'", old);
4201 cp_error ("conflicts with function declaration `%#D'", decl);
4206 if (old || TREE_CODE (decl) == TEMPLATE_DECL)
4208 if (old && TREE_CODE (old) != OVERLOAD)
4209 new_binding = ovl_cons (decl, ovl_cons (old, NULL_TREE));
4211 new_binding = ovl_cons (decl, old);
4214 /* NAME is not ambiguous. */
4218 set_namespace_binding (name, current_namespace, new_binding);
4221 /* We only create an OVERLOAD if there was a previous binding at
4222 this level. In that case, we need to remove the old binding
4223 and replace it with the new binding. We must also run
4224 through the NAMES on the binding level where the name was
4225 bound to update the chain. */
4226 if (TREE_CODE (new_binding) == OVERLOAD)
4230 for (d = &BINDING_LEVEL (IDENTIFIER_BINDING (name))->names;
4232 d = &TREE_CHAIN (*d))
4234 || (TREE_CODE (*d) == TREE_LIST
4235 && TREE_VALUE (*d) == old))
4237 if (TREE_CODE (*d) == TREE_LIST)
4238 /* Just replace the old binding with the new. */
4239 TREE_VALUE (*d) = new_binding;
4241 /* Build a TREE_LIST to wrap the OVERLOAD. */
4242 *d = build_tree_list (NULL_TREE, new_binding);
4244 /* And update the CPLUS_BINDING node. */
4245 BINDING_VALUE (IDENTIFIER_BINDING (name))
4250 /* We should always find a previous binding in this case. */
4251 my_friendly_abort (0);
4254 /* Install the new binding. */
4255 push_local_binding (name, new_binding);
4261 /* Generate an implicit declaration for identifier FUNCTIONID
4262 as a function of type int (). Print a warning if appropriate. */
4265 implicitly_declare (functionid)
4269 int temp = allocation_temporary_p ();
4271 push_obstacks_nochange ();
4273 /* Save the decl permanently so we can warn if definition follows.
4274 In ANSI C, warn_implicit is usually false, so the saves little space.
4275 But in C++, it's usually true, hence the extra code. */
4276 if (temp && (! warn_implicit || toplevel_bindings_p ()))
4277 end_temporary_allocation ();
4279 /* We used to reuse an old implicit decl here,
4280 but this loses with inline functions because it can clobber
4281 the saved decl chains. */
4282 decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type);
4284 DECL_EXTERNAL (decl) = 1;
4285 TREE_PUBLIC (decl) = 1;
4287 /* ANSI standard says implicit declarations are in the innermost block.
4288 So we record the decl in the standard fashion. */
4290 rest_of_decl_compilation (decl, NULL_PTR, 0, 0);
4293 /* Only one warning per identifier. */
4294 && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE)
4296 cp_pedwarn ("implicit declaration of function `%#D'", decl);
4299 SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl);
4306 /* Return zero if the declaration NEWDECL is valid
4307 when the declaration OLDDECL (assumed to be for the same name)
4308 has already been seen.
4309 Otherwise return an error message format string with a %s
4310 where the identifier should go. */
4313 redeclaration_error_message (newdecl, olddecl)
4314 tree newdecl, olddecl;
4316 if (TREE_CODE (newdecl) == TYPE_DECL)
4318 /* Because C++ can put things into name space for free,
4319 constructs like "typedef struct foo { ... } foo"
4320 would look like an erroneous redeclaration. */
4321 if (same_type_p (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
4324 return "redefinition of `%#D'";
4326 else if (TREE_CODE (newdecl) == FUNCTION_DECL)
4328 /* If this is a pure function, its olddecl will actually be
4329 the original initialization to `0' (which we force to call
4330 abort()). Don't complain about redefinition in this case. */
4331 if (DECL_LANG_SPECIFIC (olddecl) && DECL_ABSTRACT_VIRTUAL_P (olddecl))
4334 /* If both functions come from different namespaces, this is not
4335 a redeclaration - this is a conflict with a used function. */
4336 if (DECL_NAMESPACE_SCOPE_P (olddecl)
4337 && DECL_CONTEXT (olddecl) != DECL_CONTEXT (newdecl))
4338 return "`%D' conflicts with used function";
4340 /* We'll complain about linkage mismatches in
4341 warn_extern_redeclared_static. */
4343 /* Defining the same name twice is no good. */
4344 if (DECL_INITIAL (olddecl) != NULL_TREE
4345 && DECL_INITIAL (newdecl) != NULL_TREE)
4347 if (DECL_NAME (olddecl) == NULL_TREE)
4348 return "`%#D' not declared in class";
4350 return "redefinition of `%#D'";
4354 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
4356 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
4357 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl))
4358 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)))
4359 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL
4360 && TYPE_SIZE (TREE_TYPE (newdecl))
4361 && TYPE_SIZE (TREE_TYPE (olddecl))))
4362 return "redefinition of `%#D'";
4365 else if (toplevel_bindings_p ())
4367 /* Objects declared at top level: */
4368 /* If at least one is a reference, it's ok. */
4369 if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
4371 /* Reject two definitions. */
4372 return "redefinition of `%#D'";
4376 /* Objects declared with block scope: */
4377 /* Reject two definitions, and reject a definition
4378 together with an external reference. */
4379 if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
4380 return "redeclaration of `%#D'";
4385 /* Get the LABEL_DECL corresponding to identifier ID as a label.
4386 Create one if none exists so far for the current function.
4387 This function is called for both label definitions and label references. */
4393 register tree decl = IDENTIFIER_LABEL_VALUE (id);
4395 if (current_function_decl == NULL_TREE)
4397 error ("label `%s' referenced outside of any function",
4398 IDENTIFIER_POINTER (id));
4402 if ((decl == NULL_TREE
4403 || DECL_SOURCE_LINE (decl) == 0)
4404 && (named_label_uses == NULL
4405 || named_label_uses->names_in_scope != current_binding_level->names
4406 || named_label_uses->label_decl != decl))
4408 struct named_label_list *new_ent;
4410 = (struct named_label_list*)oballoc (sizeof (struct named_label_list));
4411 new_ent->label_decl = decl;
4412 new_ent->names_in_scope = current_binding_level->names;
4413 new_ent->binding_level = current_binding_level;
4414 new_ent->lineno_o_goto = lineno;
4415 new_ent->filename_o_goto = input_filename;
4416 new_ent->next = named_label_uses;
4417 named_label_uses = new_ent;
4420 /* Use a label already defined or ref'd with this name. */
4421 if (decl != NULL_TREE)
4423 /* But not if it is inherited and wasn't declared to be inheritable. */
4424 if (DECL_CONTEXT (decl) != current_function_decl
4425 && ! C_DECLARED_LABEL_FLAG (decl))
4426 return shadow_label (id);
4430 decl = build_decl (LABEL_DECL, id, void_type_node);
4432 /* Make sure every label has an rtx. */
4435 /* A label not explicitly declared must be local to where it's ref'd. */
4436 DECL_CONTEXT (decl) = current_function_decl;
4438 DECL_MODE (decl) = VOIDmode;
4440 /* Say where one reference is to the label,
4441 for the sake of the error if it is not defined. */
4442 DECL_SOURCE_LINE (decl) = lineno;
4443 DECL_SOURCE_FILE (decl) = input_filename;
4445 SET_IDENTIFIER_LABEL_VALUE (id, decl);
4447 named_labels = tree_cons (NULL_TREE, decl, named_labels);
4448 named_label_uses->label_decl = decl;
4453 /* Make a label named NAME in the current function,
4454 shadowing silently any that may be inherited from containing functions
4455 or containing scopes.
4457 Note that valid use, if the label being shadowed
4458 comes from another scope in the same function,
4459 requires calling declare_nonlocal_label right away. */
4465 register tree decl = IDENTIFIER_LABEL_VALUE (name);
4467 if (decl != NULL_TREE)
4469 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
4470 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
4473 return lookup_label (name);
4476 /* Define a label, specifying the location in the source file.
4477 Return the LABEL_DECL node for the label, if the definition is valid.
4478 Otherwise return 0. */
4481 define_label (filename, line, name)
4488 if (minimal_parse_mode)
4490 push_obstacks (&permanent_obstack, &permanent_obstack);
4491 decl = build_decl (LABEL_DECL, name, void_type_node);
4493 DECL_SOURCE_LINE (decl) = line;
4494 DECL_SOURCE_FILE (decl) = filename;
4499 decl = lookup_label (name);
4501 /* After labels, make any new cleanups go into their
4502 own new (temporary) binding contour. */
4503 current_binding_level->more_cleanups_ok = 0;
4505 /* If label with this name is known from an outer context, shadow it. */
4506 if (decl != NULL_TREE && DECL_CONTEXT (decl) != current_function_decl)
4508 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
4509 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
4510 decl = lookup_label (name);
4513 if (name == get_identifier ("wchar_t"))
4514 cp_pedwarn ("label named wchar_t");
4516 if (DECL_INITIAL (decl) != NULL_TREE)
4518 cp_error ("duplicate label `%D'", decl);
4523 struct named_label_list *uses, *prev;
4526 /* Mark label as having been defined. */
4527 DECL_INITIAL (decl) = error_mark_node;
4528 /* Say where in the source. */
4529 DECL_SOURCE_FILE (decl) = filename;
4530 DECL_SOURCE_LINE (decl) = line;
4533 uses = named_label_uses;
4534 while (uses != NULL)
4535 if (uses->label_decl == decl)
4537 struct binding_level *b = current_binding_level;
4540 tree new_decls = b->names;
4541 tree old_decls = (b == uses->binding_level)
4542 ? uses->names_in_scope : NULL_TREE;
4543 while (new_decls != old_decls)
4545 if (TREE_CODE (new_decls) == VAR_DECL
4546 /* Don't complain about crossing initialization
4547 of internal entities. They can't be accessed,
4548 and they should be cleaned up
4549 by the time we get to the label. */
4550 && ! DECL_ARTIFICIAL (new_decls)
4551 && !(DECL_INITIAL (new_decls) == NULL_TREE
4552 && pod_type_p (TREE_TYPE (new_decls))))
4556 cp_error ("jump to label `%D'", decl);
4557 error_with_file_and_line (uses->filename_o_goto,
4558 uses->lineno_o_goto,
4562 if (DECL_INITIAL (new_decls)
4563 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls)))
4564 cp_error_at (" crosses initialization of `%#D'",
4567 cp_error_at (" enters scope of non-POD `%#D'",
4570 new_decls = TREE_CHAIN (new_decls);
4572 if (b == uses->binding_level)
4578 prev->next = uses->next;
4580 named_label_uses = uses->next;
4589 current_function_return_value = NULL_TREE;
4596 struct binding_level *level;
4597 struct cp_switch *next;
4600 static struct cp_switch *switch_stack;
4606 = (struct cp_switch *) oballoc (sizeof (struct cp_switch));
4607 p->level = current_binding_level;
4608 p->next = switch_stack;
4615 switch_stack = switch_stack->next;
4618 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4619 /* XXX Note decl is never actually used. (bpk) */
4622 define_case_label ()
4624 tree cleanup = last_cleanup_this_contour ();
4625 struct binding_level *b = current_binding_level;
4630 static int explained = 0;
4631 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup));
4632 warning ("where case label appears here");
4635 warning ("(enclose actions of previous case statements requiring");
4636 warning ("destructors in their own binding contours.)");
4641 for (; b && b != switch_stack->level; b = b->level_chain)
4643 tree new_decls = b->names;
4644 for (; new_decls; new_decls = TREE_CHAIN (new_decls))
4646 if (TREE_CODE (new_decls) == VAR_DECL
4647 /* Don't complain about crossing initialization
4648 of internal entities. They can't be accessed,
4649 and they should be cleaned up
4650 by the time we get to the label. */
4651 && ! DECL_ARTIFICIAL (new_decls)
4652 && ((DECL_INITIAL (new_decls) != NULL_TREE
4653 && DECL_INITIAL (new_decls) != error_mark_node)
4654 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
4657 error ("jump to case label");
4659 cp_error_at (" crosses initialization of `%#D'",
4665 /* After labels, make any new cleanups go into their
4666 own new (temporary) binding contour. */
4668 current_binding_level->more_cleanups_ok = 0;
4669 current_function_return_value = NULL_TREE;
4672 /* Return the list of declarations of the current level.
4673 Note that this list is in reverse order unless/until
4674 you nreverse it; and when you do nreverse it, you must
4675 store the result back using `storedecls' or you will lose. */
4680 return current_binding_level->names;
4683 /* Return the list of type-tags (for structs, etc) of the current level. */
4688 return current_binding_level->tags;
4691 /* Store the list of declarations of the current level.
4692 This is done for the parameter declarations of a function being defined,
4693 after they are modified in the light of any missing parameters. */
4699 current_binding_level->names = decls;
4702 /* Similarly, store the list of tags of the current level. */
4708 current_binding_level->tags = tags;
4711 /* Given NAME, an IDENTIFIER_NODE,
4712 return the structure (or union or enum) definition for that name.
4713 Searches binding levels from BINDING_LEVEL up to the global level.
4714 If THISLEVEL_ONLY is nonzero, searches only the specified context
4715 (but skips any tag-transparent contexts to find one that is
4716 meaningful for tags).
4717 FORM says which kind of type the caller wants;
4718 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4719 If the wrong kind of type is found, and it's not a template, an error is
4723 lookup_tag (form, name, binding_level, thislevel_only)
4724 enum tree_code form;
4726 struct binding_level *binding_level;
4729 register struct binding_level *level;
4730 /* Non-zero if, we should look past a pseudo-global level, even if
4732 int allow_pseudo_global = 1;
4734 for (level = binding_level; level; level = level->level_chain)
4737 if (ANON_AGGRNAME_P (name))
4738 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4740 /* There's no need for error checking here, because
4741 anon names are unique throughout the compilation. */
4742 if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name)
4743 return TREE_VALUE (tail);
4745 else if (level->namespace_p)
4746 /* Do namespace lookup. */
4747 for (tail = current_namespace; 1; tail = CP_DECL_CONTEXT (tail))
4749 tree old = binding_for_name (name, tail);
4751 /* If we just skipped past a pseudo global level, even
4752 though THISLEVEL_ONLY, and we find a template class
4753 declaration, then we use the _TYPE node for the
4754 template. See the example below. */
4755 if (thislevel_only && !allow_pseudo_global
4756 && old && BINDING_VALUE (old)
4757 && DECL_CLASS_TEMPLATE_P (BINDING_VALUE (old)))
4758 old = TREE_TYPE (BINDING_VALUE (old));
4760 old = BINDING_TYPE (old);
4762 /* If it has an original type, it is a typedef, and we
4763 should not return it. */
4764 if (old && DECL_ORIGINAL_TYPE (TYPE_NAME (old)))
4766 if (old && TREE_CODE (old) != form
4767 && !(form != ENUMERAL_TYPE && TREE_CODE (old) == TEMPLATE_DECL))
4769 cp_error ("`%#D' redeclared as %C", old, form);
4774 if (thislevel_only || tail == global_namespace)
4778 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4780 if (TREE_PURPOSE (tail) == name)
4782 enum tree_code code = TREE_CODE (TREE_VALUE (tail));
4783 /* Should tighten this up; it'll probably permit
4784 UNION_TYPE and a struct template, for example. */
4786 && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL))
4788 /* Definition isn't the kind we were looking for. */
4789 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail),
4793 return TREE_VALUE (tail);
4796 if (thislevel_only && ! level->tag_transparent)
4798 if (level->pseudo_global && allow_pseudo_global)
4800 /* We must deal with cases like this:
4802 template <class T> struct S;
4803 template <class T> struct S {};
4805 When looking up `S', for the second declaration, we
4806 would like to find the first declaration. But, we
4807 are in the pseudo-global level created for the
4808 template parameters, rather than the (surrounding)
4809 namespace level. Thus, we keep going one more level,
4810 even though THISLEVEL_ONLY is non-zero. */
4811 allow_pseudo_global = 0;
4817 if (current_class_type && level->level_chain->namespace_p)
4819 /* Try looking in this class's tags before heading into
4820 global binding level. */
4821 tree context = current_class_type;
4824 switch (TREE_CODE_CLASS (TREE_CODE (context)))
4828 these_tags = CLASSTYPE_TAGS (context);
4829 if (ANON_AGGRNAME_P (name))
4832 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags))
4834 return TREE_VALUE (tail);
4835 these_tags = TREE_CHAIN (these_tags);
4840 if (TREE_PURPOSE (these_tags) == name)
4842 if (TREE_CODE (TREE_VALUE (these_tags)) != form)
4844 cp_error ("`%#D' redeclared as %C in class scope",
4845 TREE_VALUE (tail), form);
4848 return TREE_VALUE (tail);
4850 these_tags = TREE_CHAIN (these_tags);
4852 /* If this type is not yet complete, then don't
4853 look at its context. */
4854 if (TYPE_SIZE (context) == NULL_TREE)
4856 /* Go to next enclosing type, if any. */
4857 context = DECL_CONTEXT (TYPE_MAIN_DECL (context));
4860 context = DECL_CONTEXT (context);
4863 my_friendly_abort (10);
4876 set_current_level_tags_transparency (tags_transparent)
4877 int tags_transparent;
4879 current_binding_level->tag_transparent = tags_transparent;
4883 /* Given a type, find the tag that was defined for it and return the tag name.
4884 Otherwise return 0. However, the value can never be 0
4885 in the cases in which this is used.
4887 C++: If NAME is non-zero, this is the new name to install. This is
4888 done when replacing anonymous tags with real tag names. */
4891 lookup_tag_reverse (type, name)
4895 register struct binding_level *level;
4897 for (level = current_binding_level; level; level = level->level_chain)
4900 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4902 if (TREE_VALUE (tail) == type)
4905 TREE_PURPOSE (tail) = name;
4906 return TREE_PURPOSE (tail);
4913 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4914 Return the type value, or NULL_TREE if not found. */
4917 lookup_nested_type (type, context)
4921 if (context == NULL_TREE)
4925 switch (TREE_CODE (context))
4929 tree ctype = TREE_TYPE (context);
4930 tree match = value_member (type, CLASSTYPE_TAGS (ctype));
4932 return TREE_VALUE (match);
4933 context = DECL_CONTEXT (context);
4935 /* When we have a nested class whose member functions have
4936 local types (e.g., a set of enums), we'll arrive here
4937 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4938 the enclosing class. Instead, we want to make sure we
4939 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4940 if (context && TREE_CODE (context) == RECORD_TYPE)
4941 context = TREE_CHAIN (context);
4945 if (TYPE_NAME (type) && TYPE_IDENTIFIER (type))
4946 return lookup_name (TYPE_IDENTIFIER (type), 1);
4949 my_friendly_abort (12);
4955 /* Look up NAME in the NAMESPACE. */
4958 lookup_namespace_name (namespace, name)
4959 tree namespace, name;
4961 struct tree_binding _b;
4964 my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL, 370);
4966 if (TREE_CODE (name) == NAMESPACE_DECL)
4967 /* This happens for A::B<int> when B is a namespace. */
4969 else if (TREE_CODE (name) == TEMPLATE_DECL)
4971 /* This happens for A::B where B is a template, and there are no
4972 template arguments. */
4973 cp_error ("invalid use of `%D'", name);
4974 return error_mark_node;
4977 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 373);
4979 val = binding_init (&_b);
4980 if (!qualified_lookup_using_namespace (name, namespace, val, 0))
4981 return error_mark_node;
4983 if (BINDING_VALUE (val))
4985 val = BINDING_VALUE (val);
4987 /* If we have a single function from a using decl, pull it out. */
4988 if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val))
4989 val = OVL_FUNCTION (val);
4993 cp_error ("`%D' undeclared in namespace `%D'", name, namespace);
4994 return error_mark_node;
4997 /* Hash a TYPENAME_TYPE. K is really of type `tree'. */
4999 static unsigned long
5007 hash = (((unsigned long) TYPE_CONTEXT (t))
5008 ^ ((unsigned long) DECL_NAME (TYPE_NAME (t))));
5013 /* Compare two TYPENAME_TYPEs. K1 and K2 are really of type `tree'. */
5016 typename_compare (k1, k2)
5027 d1 = TYPE_NAME (t1);
5028 d2 = TYPE_NAME (t2);
5030 return (DECL_NAME (d1) == DECL_NAME (d2)
5031 && same_type_p (TYPE_CONTEXT (t1), TYPE_CONTEXT (t2))
5032 && ((TREE_TYPE (t1) != NULL_TREE)
5033 == (TREE_TYPE (t2) != NULL_TREE))
5034 && same_type_p (TREE_TYPE (t1), TREE_TYPE (t2))
5035 && TYPENAME_TYPE_FULLNAME (t1) == TYPENAME_TYPE_FULLNAME (t2));
5038 /* Build a TYPENAME_TYPE. If the type is `typename T::t', CONTEXT is
5039 the type of `T', NAME is the IDENTIFIER_NODE for `t'. If BASE_TYPE
5040 is non-NULL, this type is being created by the implicit typename
5041 extension, and BASE_TYPE is a type named `t' in some base class of
5042 `T' which depends on template parameters.
5044 Returns the new TYPENAME_TYPE. */
5047 build_typename_type (context, name, fullname, base_type)
5055 struct hash_entry* e;
5057 static struct hash_table ht;
5059 push_obstacks (&permanent_obstack, &permanent_obstack);
5062 && !hash_table_init (&ht, &hash_newfunc, &typename_hash,
5064 fatal ("virtual memory exhausted");
5066 /* Build the TYPENAME_TYPE. */
5067 t = make_lang_type (TYPENAME_TYPE);
5068 TYPE_CONTEXT (t) = FROB_CONTEXT (context);
5069 TYPENAME_TYPE_FULLNAME (t) = fullname;
5070 TREE_TYPE (t) = base_type;
5072 /* Build the corresponding TYPE_DECL. */
5073 d = build_decl (TYPE_DECL, name, t);
5074 TYPE_NAME (TREE_TYPE (d)) = d;
5075 TYPE_STUB_DECL (TREE_TYPE (d)) = d;
5076 DECL_CONTEXT (d) = FROB_CONTEXT (context);
5077 DECL_ARTIFICIAL (d) = 1;
5079 /* See if we already have this type. */
5080 e = hash_lookup (&ht, t, /*create=*/false, /*copy=*/0);
5083 /* This will free not only TREE_TYPE, but the lang-specific data
5084 and the TYPE_DECL as well. */
5085 obstack_free (&permanent_obstack, t);
5089 /* Insert the type into the table. */
5090 hash_lookup (&ht, t, /*create=*/true, /*copy=*/0);
5098 make_typename_type (context, name)
5104 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
5105 name = TYPE_IDENTIFIER (name);
5106 else if (TREE_CODE (name) == TYPE_DECL)
5107 name = DECL_NAME (name);
5111 if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
5113 name = TREE_OPERAND (name, 0);
5114 if (TREE_CODE (name) == TEMPLATE_DECL)
5115 name = TREE_OPERAND (fullname, 0) = DECL_NAME (name);
5117 if (TREE_CODE (name) != IDENTIFIER_NODE)
5118 my_friendly_abort (2000);
5120 if (TREE_CODE (context) == NAMESPACE_DECL)
5122 /* We can get here from typename_sub0 in the explicit_template_type
5123 expansion. Just fail. */
5124 cp_error ("no class template named `%#T' in `%#T'",
5126 return error_mark_node;
5129 if (! uses_template_parms (context)
5130 || currently_open_class (context))
5132 if (TREE_CODE (fullname) == TEMPLATE_ID_EXPR)
5134 if (IS_AGGR_TYPE (context))
5135 t = lookup_field (context, name, 0, 0);
5139 if (t == NULL_TREE || TREE_CODE (t) != TEMPLATE_DECL
5140 || TREE_CODE (DECL_RESULT (t)) != TYPE_DECL)
5142 cp_error ("no class template named `%#T' in `%#T'",
5144 return error_mark_node;
5147 return lookup_template_class (t, TREE_OPERAND (fullname, 1),
5149 /*entering_scope=*/0);
5153 if (IS_AGGR_TYPE (context))
5154 t = lookup_field (context, name, 0, 1);
5160 cp_error ("no type named `%#T' in `%#T'", name, context);
5161 return error_mark_node;
5164 return TREE_TYPE (t);
5168 return build_typename_type (context, name, fullname, NULL_TREE);
5171 /* Select the right _DECL from multiple choices. */
5174 select_decl (binding, flags)
5179 val = BINDING_VALUE (binding);
5180 if (LOOKUP_NAMESPACES_ONLY (flags))
5182 /* We are not interested in types. */
5183 if (val && TREE_CODE (val) == NAMESPACE_DECL)
5188 /* If we could have a type and
5189 we have nothing or we need a type and have none. */
5190 if (BINDING_TYPE (binding)
5191 && (!val || ((flags & LOOKUP_PREFER_TYPES)
5192 && TREE_CODE (val) != TYPE_DECL)))
5193 val = TYPE_STUB_DECL (BINDING_TYPE (binding));
5194 /* Don't return non-types if we really prefer types. */
5195 else if (val && LOOKUP_TYPES_ONLY (flags) && TREE_CODE (val) != TYPE_DECL
5196 && (!looking_for_template || TREE_CODE (val) != TEMPLATE_DECL))
5202 /* Unscoped lookup of a global, iterate over namespaces, considering
5203 using namespace statements. */
5206 unqualified_namespace_lookup (name, flags)
5210 struct tree_binding _binding;
5211 tree b = binding_init (&_binding);
5212 tree initial = current_decl_namespace();
5213 tree scope = initial;
5215 struct binding_level *level;
5216 tree val = NULL_TREE;
5220 val = binding_for_name (name, scope);
5222 /* Initialize binding for this context. */
5223 BINDING_VALUE (b) = BINDING_VALUE (val);
5224 BINDING_TYPE (b) = BINDING_TYPE (val);
5226 /* Add all _DECLs seen through local using-directives. */
5227 for (level = current_binding_level;
5228 !level->namespace_p;
5229 level = level->level_chain)
5230 if (!lookup_using_namespace (name, b, level->using_directives,
5232 /* Give up because of error. */
5235 /* Add all _DECLs seen through global using-directives. */
5236 /* XXX local and global using lists should work equally. */
5240 if (!lookup_using_namespace (name, b, DECL_NAMESPACE_USING (siter),
5242 /* Give up because of error. */
5244 if (siter == scope) break;
5245 siter = CP_DECL_CONTEXT (siter);
5248 val = select_decl (b, flags);
5249 if (scope == global_namespace)
5251 scope = CP_DECL_CONTEXT (scope);
5256 /* Combine prefer_type and namespaces_only into flags. */
5259 lookup_flags (prefer_type, namespaces_only)
5260 int prefer_type, namespaces_only;
5262 if (namespaces_only)
5263 return LOOKUP_PREFER_NAMESPACES;
5264 if (prefer_type > 1)
5265 return LOOKUP_PREFER_TYPES;
5266 if (prefer_type > 0)
5267 return LOOKUP_PREFER_BOTH;
5271 /* Given a lookup that returned VAL, use FLAGS to decide if we want to
5272 ignore it or not. Subroutine of lookup_name_real. */
5275 qualify_lookup (val, flags)
5279 if (val == NULL_TREE)
5281 if ((flags & LOOKUP_PREFER_NAMESPACES) && TREE_CODE (val) == NAMESPACE_DECL)
5283 if ((flags & LOOKUP_PREFER_TYPES)
5284 && (TREE_CODE (val) == TYPE_DECL
5285 || ((flags & LOOKUP_TEMPLATES_EXPECTED)
5286 && DECL_CLASS_TEMPLATE_P (val))))
5288 if (flags & (LOOKUP_PREFER_NAMESPACES | LOOKUP_PREFER_TYPES))
5293 /* Look up NAME in the current binding level and its superiors in the
5294 namespace of variables, functions and typedefs. Return a ..._DECL
5295 node of some kind representing its definition if there is only one
5296 such declaration, or return a TREE_LIST with all the overloaded
5297 definitions if there are many, or return 0 if it is undefined.
5299 If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
5300 If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
5301 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
5302 Otherwise we prefer non-TYPE_DECLs.
5304 If NONCLASS is non-zero, we don't look for the NAME in class scope,
5305 using IDENTIFIER_CLASS_VALUE. */
5308 lookup_name_real (name, prefer_type, nonclass, namespaces_only)
5310 int prefer_type, nonclass, namespaces_only;
5314 tree from_obj = NULL_TREE;
5317 /* Hack: copy flag set by parser, if set. */
5318 if (only_namespace_names)
5319 namespaces_only = 1;
5321 if (prefer_type == -2)
5323 extern int looking_for_typename;
5324 tree type = NULL_TREE;
5327 prefer_type = looking_for_typename;
5329 flags = lookup_flags (prefer_type, namespaces_only);
5330 /* During parsing, we need to complain. */
5331 flags |= LOOKUP_COMPLAIN;
5332 /* If the next thing is '<', class templates are types. */
5333 if (looking_for_template)
5334 flags |= LOOKUP_TEMPLATES_EXPECTED;
5336 /* std:: becomes :: for now. */
5337 if (got_scope == std_node)
5338 got_scope = void_type_node;
5342 else if (got_object != error_mark_node)
5347 if (type == error_mark_node)
5348 return error_mark_node;
5349 if (TREE_CODE (type) == TYPENAME_TYPE && TREE_TYPE (type))
5350 type = TREE_TYPE (type);
5353 type = complete_type (type);
5355 if (TREE_CODE (type) == VOID_TYPE)
5356 type = global_namespace;
5357 if (TREE_CODE (type) == NAMESPACE_DECL)
5359 struct tree_binding b;
5360 val = binding_init (&b);
5361 if (!qualified_lookup_using_namespace (name, type, val, flags))
5363 val = select_decl (val, flags);
5365 else if (! IS_AGGR_TYPE (type)
5366 || TREE_CODE (type) == TEMPLATE_TYPE_PARM
5367 || TREE_CODE (type) == TEMPLATE_TEMPLATE_PARM
5368 || TREE_CODE (type) == TYPENAME_TYPE)
5369 /* Someone else will give an error about this if needed. */
5371 else if (TYPE_BEING_DEFINED (type))
5373 val = IDENTIFIER_CLASS_VALUE (name);
5374 if (val && DECL_CONTEXT (val) != type)
5376 struct binding_level *b = class_binding_level;
5377 for (val = NULL_TREE; b; b = b->level_chain)
5379 tree t = purpose_member (name, b->class_shadowed);
5380 if (t && TREE_VALUE (t)
5381 && DECL_CONTEXT (TREE_VALUE (t)) == type)
5383 val = TREE_VALUE (t);
5388 if (val == NULL_TREE)
5389 val = lookup_field (type, name, 0, 1);
5391 else if (type == current_class_type)
5392 val = IDENTIFIER_CLASS_VALUE (name);
5394 val = lookup_member (type, name, 0, prefer_type);
5401 else if (got_object && val)
5405 flags = lookup_flags (prefer_type, namespaces_only);
5407 /* First, look in non-namespace scopes. */
5408 val = IDENTIFIER_BINDING (name);
5409 for (val = IDENTIFIER_BINDING (name); val; val = TREE_CHAIN (val))
5411 if (!LOCAL_BINDING_P (val) && nonclass)
5412 /* We're not looking for class-scoped bindings, so keep going. */
5415 /* If this is the kind of thing we're looking for, we're done. */
5416 if (qualify_lookup (BINDING_VALUE (val), flags))
5418 val = BINDING_VALUE (val);
5421 else if ((flags & LOOKUP_PREFER_TYPES)
5422 && qualify_lookup (BINDING_TYPE (val), flags))
5424 val = BINDING_TYPE (val);
5429 /* If VAL is a type from a dependent base, we're not really supposed
5430 to be able to see it; the fact that we can is the "implicit
5431 typename" extension. We call lookup_field here to turn VAL into
5432 a TYPE_DECL for a TYPENAME_TYPE. */
5433 if (processing_template_decl && val
5434 && val == IDENTIFIER_CLASS_VALUE (name)
5435 && TREE_CODE (val) == TYPE_DECL
5436 && !currently_open_class (DECL_CONTEXT (val))
5437 && uses_template_parms (current_class_type))
5438 val = lookup_field (current_class_type, name, 0, 1);
5440 /* We don't put names from baseclasses onto the IDENTIFIER_BINDING
5441 list when we're defining a type. It would probably be simpler to
5442 do this, but we don't. So, we must lookup names from base
5443 classes explicitly. */
5444 if (!val && !nonclass
5445 && current_class_type && TYPE_BEING_DEFINED (current_class_type))
5447 val = qualify_lookup (lookup_field (current_class_type, name, 0, 0),
5450 val = qualify_lookup (lookup_nested_field (name, !yylex),
5454 /* If we found a type from a dependent base class (using the
5455 implicit typename extension) make sure that there's not some
5456 global name which should be chosen instead. */
5457 if (val && TREE_CODE (val) == TYPE_DECL
5458 && IMPLICIT_TYPENAME_P (TREE_TYPE (val)))
5462 /* Any other name takes precedence over an implicit typename. Warn the
5463 user about this potentially confusing lookup. */
5464 global_val = unqualified_namespace_lookup (name, flags);
5470 /* Only warn when not lexing; we don't want to warn if they
5471 use this name as a declarator. */
5472 subtype = TREE_TYPE (TREE_TYPE (val));
5474 && ! (TREE_CODE (global_val) == TEMPLATE_DECL
5475 && CLASSTYPE_TEMPLATE_INFO (subtype)
5476 && CLASSTYPE_TI_TEMPLATE (subtype) == global_val)
5477 && ! (TREE_CODE (global_val) == TYPE_DECL
5478 && same_type_p (TREE_TYPE (global_val), subtype)))
5480 cp_warning ("lookup of `%D' finds `%#D'", name, global_val);
5481 cp_warning (" instead of `%D' from dependent base class",
5483 cp_warning (" (use `typename %T::%D' if that's what you meant)",
5484 constructor_name (current_class_type), name);
5487 /* Use the global value instead of the implicit typename. */
5492 /* No local, or class-scoped binding. Look for a namespace-scope
5494 val = unqualified_namespace_lookup (name, flags);
5499 /* This should only warn about types used in qualified-ids. */
5500 if (from_obj && from_obj != val)
5502 if (looking_for_typename && TREE_CODE (from_obj) == TYPE_DECL
5503 && TREE_CODE (val) == TYPE_DECL
5504 && TREE_TYPE (from_obj) != TREE_TYPE (val))
5506 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
5507 name, got_object, TREE_TYPE (from_obj));
5508 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
5512 /* We don't change val to from_obj if got_object depends on
5513 template parms because that breaks implicit typename for
5514 destructor calls. */
5515 if (! uses_template_parms (got_object))
5519 /* If we have a single function from a using decl, pull it out. */
5520 if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val))
5521 val = OVL_FUNCTION (val);
5530 lookup_name_nonclass (name)
5533 return lookup_name_real (name, 0, 1, 0);
5537 lookup_function_nonclass (name, args)
5541 return lookup_arg_dependent (name, lookup_name_nonclass (name), args);
5545 lookup_name_namespace_only (name)
5548 /* type-or-namespace, nonclass, namespace_only */
5549 return lookup_name_real (name, 1, 1, 1);
5553 lookup_name (name, prefer_type)
5557 return lookup_name_real (name, prefer_type, 0, 0);
5560 /* Similar to `lookup_name' but look only at current binding level. */
5563 lookup_name_current_level (name)
5566 register tree t = NULL_TREE;
5568 if (current_binding_level->namespace_p)
5570 t = IDENTIFIER_NAMESPACE_VALUE (name);
5572 /* extern "C" function() */
5573 if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST)
5576 else if (IDENTIFIER_BINDING (name)
5577 && LOCAL_BINDING_P (IDENTIFIER_BINDING (name)))
5579 struct binding_level *b = current_binding_level;
5583 if (BINDING_LEVEL (IDENTIFIER_BINDING (name)) == b)
5584 return IDENTIFIER_VALUE (name);
5596 /* Like lookup_name_current_level, but for types. */
5599 lookup_type_current_level (name)
5602 register tree t = NULL_TREE;
5604 my_friendly_assert (! current_binding_level->namespace_p, 980716);
5606 if (REAL_IDENTIFIER_TYPE_VALUE (name) != NULL_TREE
5607 && REAL_IDENTIFIER_TYPE_VALUE (name) != global_type_node)
5609 struct binding_level *b = current_binding_level;
5612 if (purpose_member (name, b->type_shadowed))
5613 return REAL_IDENTIFIER_TYPE_VALUE (name);
5625 begin_only_namespace_names ()
5627 only_namespace_names = 1;
5631 end_only_namespace_names ()
5633 only_namespace_names = 0;
5636 /* Arrange for the user to get a source line number, even when the
5637 compiler is going down in flames, so that she at least has a
5638 chance of working around problems in the compiler. We used to
5639 call error(), but that let the segmentation fault continue
5640 through; now, it's much more passive by asking them to send the
5641 maintainers mail about the problem. */
5645 int sig ATTRIBUTE_UNUSED;
5647 signal (SIGSEGV, SIG_DFL);
5649 signal (SIGIOT, SIG_DFL);
5652 signal (SIGILL, SIG_DFL);
5655 signal (SIGABRT, SIG_DFL);
5658 signal (SIGBUS, SIG_DFL);
5660 my_friendly_abort (0);
5664 /* Unused -- brendan 970107 */
5665 /* Array for holding types considered "built-in". These types
5666 are output in the module in which `main' is defined. */
5667 static tree *builtin_type_tdescs_arr;
5668 static int builtin_type_tdescs_len, builtin_type_tdescs_max;
5671 /* Push the declarations of builtin types into the namespace.
5672 RID_INDEX, if < RID_MAX is the index of the builtin type
5673 in the array RID_POINTERS. NAME is the name used when looking
5674 up the builtin type. TYPE is the _TYPE node for the builtin type. */
5677 record_builtin_type (rid_index, name, type)
5682 tree rname = NULL_TREE, tname = NULL_TREE;
5683 tree tdecl = NULL_TREE;
5685 if ((int) rid_index < (int) RID_MAX)
5686 rname = ridpointers[(int) rid_index];
5688 tname = get_identifier (name);
5690 TYPE_BUILT_IN (type) = 1;
5694 tdecl = pushdecl (build_decl (TYPE_DECL, tname, type));
5695 set_identifier_type_value (tname, NULL_TREE);
5696 if ((int) rid_index < (int) RID_MAX)
5697 /* Built-in types live in the global namespace. */
5698 SET_IDENTIFIER_GLOBAL_VALUE (tname, tdecl);
5700 if (rname != NULL_TREE)
5702 if (tname != NULL_TREE)
5704 set_identifier_type_value (rname, NULL_TREE);
5705 SET_IDENTIFIER_GLOBAL_VALUE (rname, tdecl);
5709 tdecl = pushdecl (build_decl (TYPE_DECL, rname, type));
5710 set_identifier_type_value (rname, NULL_TREE);
5715 /* Record one of the standard Java types.
5716 * Declare it as having the given NAME.
5717 * If SIZE > 0, it is the size of one of the integral types;
5718 * otherwise it is the negative of the size of one of the other types. */
5721 record_builtin_java_type (name, size)
5727 type = make_signed_type (size);
5728 else if (size > -32)
5729 { /* "__java_char" or ""__java_boolean". */
5730 type = make_unsigned_type (-size);
5731 /*if (size == -1) TREE_SET_CODE (type, BOOLEAN_TYPE);*/
5734 { /* "__java_float" or ""__java_double". */
5735 type = make_node (REAL_TYPE);
5736 TYPE_PRECISION (type) = - size;
5739 record_builtin_type (RID_MAX, name, type);
5740 decl = TYPE_NAME (type);
5741 DECL_IGNORED_P (decl) = 1;
5742 TYPE_FOR_JAVA (type) = 1;
5746 /* Push a type into the namespace so that the back-ends ignore it. */
5749 record_unknown_type (type, name)
5753 tree decl = pushdecl (build_decl (TYPE_DECL, get_identifier (name), type));
5754 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5755 DECL_IGNORED_P (decl) = 1;
5756 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
5757 TYPE_SIZE (type) = TYPE_SIZE (void_type_node);
5758 TYPE_ALIGN (type) = 1;
5759 TYPE_MODE (type) = TYPE_MODE (void_type_node);
5762 /* Push overloaded decl, in global scope, with one argument so it
5763 can be used as a callback from define_function. */
5766 push_overloaded_decl_1 (x)
5769 push_overloaded_decl (x, 0);
5776 auto_function (name, type, code)
5778 enum built_in_function code;
5780 return define_function
5781 (IDENTIFIER_POINTER (name), type, code, push_overloaded_decl_1,
5782 IDENTIFIER_POINTER (build_decl_overload (name, TYPE_ARG_TYPES (type),
5786 /* Create the predefined scalar types of C,
5787 and some nodes representing standard constants (0, 1, (void *)0).
5788 Initialize the global binding level.
5789 Make definitions for built-in primitive functions. */
5792 init_decl_processing ()
5794 register tree endlink, int_endlink, double_endlink, unsigned_endlink;
5796 /* Data type of memcpy. */
5797 tree memcpy_ftype, strlen_ftype;
5798 int wchar_type_size;
5800 tree array_domain_type;
5801 tree vb_off_identifier = NULL_TREE;
5802 /* Function type `char *(char *, char *)' and similar ones */
5803 tree string_ftype_ptr_ptr, int_ftype_string_string;
5804 tree sizetype_endlink;
5805 tree ptr_ftype, ptr_ftype_unsigned, ptr_ftype_sizetype;
5806 tree void_ftype, void_ftype_int, void_ftype_ptr;
5808 /* Have to make these distinct before we try using them. */
5809 lang_name_cplusplus = get_identifier ("C++");
5810 lang_name_c = get_identifier ("C");
5811 lang_name_java = get_identifier ("Java");
5813 /* Enter the global namespace. */
5814 my_friendly_assert (global_namespace == NULL_TREE, 375);
5815 my_friendly_assert (current_lang_name == NULL_TREE, 375);
5816 current_lang_name = lang_name_cplusplus;
5817 push_namespace (get_identifier ("::"));
5818 global_namespace = current_namespace;
5819 current_lang_name = NULL_TREE;
5821 if (flag_strict_prototype == 2)
5822 flag_strict_prototype = pedantic;
5823 if (! flag_permissive && ! pedantic)
5824 flag_pedantic_errors = 1;
5826 strict_prototypes_lang_c = flag_strict_prototype;
5829 current_lang_name = lang_name_c;
5831 current_function_decl = NULL_TREE;
5832 named_labels = NULL_TREE;
5833 named_label_uses = NULL;
5834 current_binding_level = NULL_BINDING_LEVEL;
5835 free_binding_level = NULL_BINDING_LEVEL;
5837 /* Because most segmentation signals can be traced back into user
5838 code, catch them and at least give the user a chance of working
5839 around compiler bugs. */
5840 signal (SIGSEGV, signal_catch);
5842 /* We will also catch aborts in the back-end through signal_catch and
5843 give the user a chance to see where the error might be, and to defeat
5844 aborts in the back-end when there have been errors previously in their
5847 signal (SIGIOT, signal_catch);
5850 signal (SIGILL, signal_catch);
5853 signal (SIGABRT, signal_catch);
5856 signal (SIGBUS, signal_catch);
5859 gcc_obstack_init (&decl_obstack);
5861 /* Must lay these out before anything else gets laid out. */
5862 error_mark_node = make_node (ERROR_MARK);
5863 TREE_PERMANENT (error_mark_node) = 1;
5864 TREE_TYPE (error_mark_node) = error_mark_node;
5865 error_mark_list = build_tree_list (error_mark_node, error_mark_node);
5866 TREE_TYPE (error_mark_list) = error_mark_node;
5868 /* Make the binding_level structure for global names. */
5870 global_binding_level = current_binding_level;
5871 /* The global level is the namespace level of ::. */
5872 NAMESPACE_LEVEL (global_namespace) = global_binding_level;
5873 declare_namespace_level ();
5875 this_identifier = get_identifier (THIS_NAME);
5876 in_charge_identifier = get_identifier (IN_CHARGE_NAME);
5877 ctor_identifier = get_identifier (CTOR_NAME);
5878 dtor_identifier = get_identifier (DTOR_NAME);
5879 pfn_identifier = get_identifier (VTABLE_PFN_NAME);
5880 index_identifier = get_identifier (VTABLE_INDEX_NAME);
5881 delta_identifier = get_identifier (VTABLE_DELTA_NAME);
5882 delta2_identifier = get_identifier (VTABLE_DELTA2_NAME);
5883 pfn_or_delta2_identifier = get_identifier ("__pfn_or_delta2");
5884 if (flag_handle_signatures)
5886 tag_identifier = get_identifier (SIGTABLE_TAG_NAME);
5887 vb_off_identifier = get_identifier (SIGTABLE_VB_OFF_NAME);
5888 vt_off_identifier = get_identifier (SIGTABLE_VT_OFF_NAME);
5891 /* Define `int' and `char' first so that dbx will output them first. */
5893 integer_type_node = make_signed_type (INT_TYPE_SIZE);
5894 record_builtin_type (RID_INT, NULL_PTR, integer_type_node);
5896 /* Define `char', which is like either `signed char' or `unsigned char'
5897 but not the same as either. */
5901 ? make_signed_type (CHAR_TYPE_SIZE)
5902 : make_unsigned_type (CHAR_TYPE_SIZE));
5903 record_builtin_type (RID_CHAR, "char", char_type_node);
5905 long_integer_type_node = make_signed_type (LONG_TYPE_SIZE);
5906 record_builtin_type (RID_LONG, "long int", long_integer_type_node);
5908 unsigned_type_node = make_unsigned_type (INT_TYPE_SIZE);
5909 record_builtin_type (RID_UNSIGNED, "unsigned int", unsigned_type_node);
5911 long_unsigned_type_node = make_unsigned_type (LONG_TYPE_SIZE);
5912 record_builtin_type (RID_MAX, "long unsigned int", long_unsigned_type_node);
5913 record_builtin_type (RID_MAX, "unsigned long", long_unsigned_type_node);
5915 long_long_integer_type_node = make_signed_type (LONG_LONG_TYPE_SIZE);
5916 record_builtin_type (RID_MAX, "long long int", long_long_integer_type_node);
5918 long_long_unsigned_type_node = make_unsigned_type (LONG_LONG_TYPE_SIZE);
5919 record_builtin_type (RID_MAX, "long long unsigned int",
5920 long_long_unsigned_type_node);
5921 record_builtin_type (RID_MAX, "long long unsigned",
5922 long_long_unsigned_type_node);
5924 short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE);
5925 record_builtin_type (RID_SHORT, "short int", short_integer_type_node);
5926 short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE);
5927 record_builtin_type (RID_MAX, "short unsigned int", short_unsigned_type_node);
5928 record_builtin_type (RID_MAX, "unsigned short", short_unsigned_type_node);
5930 /* `unsigned long' is the standard type for sizeof.
5931 Note that stddef.h uses `unsigned long',
5932 and this must agree, even if long and int are the same size. */
5934 (TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE))));
5937 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE)));
5939 /* Define both `signed char' and `unsigned char'. */
5940 signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE);
5941 record_builtin_type (RID_MAX, "signed char", signed_char_type_node);
5942 unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE);
5943 record_builtin_type (RID_MAX, "unsigned char", unsigned_char_type_node);
5945 /* These are types that type_for_size and type_for_mode use. */
5946 intQI_type_node = make_signed_type (GET_MODE_BITSIZE (QImode));
5947 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node));
5948 intHI_type_node = make_signed_type (GET_MODE_BITSIZE (HImode));
5949 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node));
5950 intSI_type_node = make_signed_type (GET_MODE_BITSIZE (SImode));
5951 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node));
5952 intDI_type_node = make_signed_type (GET_MODE_BITSIZE (DImode));
5953 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node));
5954 #if HOST_BITS_PER_WIDE_INT >= 64
5955 intTI_type_node = make_signed_type (GET_MODE_BITSIZE (TImode));
5956 pushdecl (build_decl (TYPE_DECL, get_identifier ("__int128_t"), intTI_type_node));
5958 unsigned_intQI_type_node = make_unsigned_type (GET_MODE_BITSIZE (QImode));
5959 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node));
5960 unsigned_intHI_type_node = make_unsigned_type (GET_MODE_BITSIZE (HImode));
5961 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node));
5962 unsigned_intSI_type_node = make_unsigned_type (GET_MODE_BITSIZE (SImode));
5963 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node));
5964 unsigned_intDI_type_node = make_unsigned_type (GET_MODE_BITSIZE (DImode));
5965 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node));
5966 #if HOST_BITS_PER_WIDE_INT >= 64
5967 unsigned_intTI_type_node = make_unsigned_type (GET_MODE_BITSIZE (TImode));
5968 pushdecl (build_decl (TYPE_DECL, get_identifier ("__uint128_t"), unsigned_intTI_type_node));
5971 float_type_node = make_node (REAL_TYPE);
5972 TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE;
5973 record_builtin_type (RID_FLOAT, NULL_PTR, float_type_node);
5974 layout_type (float_type_node);
5976 double_type_node = make_node (REAL_TYPE);
5977 if (flag_short_double)
5978 TYPE_PRECISION (double_type_node) = FLOAT_TYPE_SIZE;
5980 TYPE_PRECISION (double_type_node) = DOUBLE_TYPE_SIZE;
5981 record_builtin_type (RID_DOUBLE, NULL_PTR, double_type_node);
5982 layout_type (double_type_node);
5984 long_double_type_node = make_node (REAL_TYPE);
5985 TYPE_PRECISION (long_double_type_node) = LONG_DOUBLE_TYPE_SIZE;
5986 record_builtin_type (RID_MAX, "long double", long_double_type_node);
5987 layout_type (long_double_type_node);
5989 complex_integer_type_node = make_node (COMPLEX_TYPE);
5990 pushdecl (build_decl (TYPE_DECL, get_identifier ("complex int"),
5991 complex_integer_type_node));
5992 TREE_TYPE (complex_integer_type_node) = integer_type_node;
5993 layout_type (complex_integer_type_node);
5995 complex_float_type_node = make_node (COMPLEX_TYPE);
5996 pushdecl (build_decl (TYPE_DECL, get_identifier ("complex float"),
5997 complex_float_type_node));
5998 TREE_TYPE (complex_float_type_node) = float_type_node;
5999 layout_type (complex_float_type_node);
6001 complex_double_type_node = make_node (COMPLEX_TYPE);
6002 pushdecl (build_decl (TYPE_DECL, get_identifier ("complex double"),
6003 complex_double_type_node));
6004 TREE_TYPE (complex_double_type_node) = double_type_node;
6005 layout_type (complex_double_type_node);
6007 complex_long_double_type_node = make_node (COMPLEX_TYPE);
6008 pushdecl (build_decl (TYPE_DECL, get_identifier ("complex long double"),
6009 complex_long_double_type_node));
6010 TREE_TYPE (complex_long_double_type_node) = long_double_type_node;
6011 layout_type (complex_long_double_type_node);
6013 java_byte_type_node = record_builtin_java_type ("__java_byte", 8);
6014 java_short_type_node = record_builtin_java_type ("__java_short", 16);
6015 java_int_type_node = record_builtin_java_type ("__java_int", 32);
6016 java_long_type_node = record_builtin_java_type ("__java_long", 64);
6017 java_float_type_node = record_builtin_java_type ("__java_float", -32);
6018 java_double_type_node = record_builtin_java_type ("__java_double", -64);
6019 java_char_type_node = record_builtin_java_type ("__java_char", -16);
6020 java_boolean_type_node = record_builtin_java_type ("__java_boolean", -1);
6022 integer_zero_node = build_int_2 (0, 0);
6023 TREE_TYPE (integer_zero_node) = integer_type_node;
6024 integer_one_node = build_int_2 (1, 0);
6025 TREE_TYPE (integer_one_node) = integer_type_node;
6026 integer_two_node = build_int_2 (2, 0);
6027 TREE_TYPE (integer_two_node) = integer_type_node;
6028 integer_three_node = build_int_2 (3, 0);
6029 TREE_TYPE (integer_three_node) = integer_type_node;
6031 boolean_type_node = make_unsigned_type (BOOL_TYPE_SIZE);
6032 TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE);
6033 TYPE_MAX_VALUE (boolean_type_node) = build_int_2 (1, 0);
6034 TREE_TYPE (TYPE_MAX_VALUE (boolean_type_node)) = boolean_type_node;
6035 TYPE_PRECISION (boolean_type_node) = 1;
6036 record_builtin_type (RID_BOOL, "bool", boolean_type_node);
6037 boolean_false_node = build_int_2 (0, 0);
6038 TREE_TYPE (boolean_false_node) = boolean_type_node;
6039 boolean_true_node = build_int_2 (1, 0);
6040 TREE_TYPE (boolean_true_node) = boolean_type_node;
6042 /* These are needed by stor-layout.c. */
6043 size_zero_node = size_int (0);
6044 size_one_node = size_int (1);
6046 signed_size_zero_node = build_int_2 (0, 0);
6047 TREE_TYPE (signed_size_zero_node) = make_signed_type (TYPE_PRECISION (sizetype));
6049 void_type_node = make_node (VOID_TYPE);
6050 record_builtin_type (RID_VOID, NULL_PTR, void_type_node);
6051 layout_type (void_type_node); /* Uses integer_zero_node. */
6052 void_list_node = build_tree_list (NULL_TREE, void_type_node);
6053 TREE_PARMLIST (void_list_node) = 1;
6055 null_pointer_node = build_int_2 (0, 0);
6056 TREE_TYPE (null_pointer_node) = build_pointer_type (void_type_node);
6057 layout_type (TREE_TYPE (null_pointer_node));
6059 /* Used for expressions that do nothing, but are not errors. */
6060 void_zero_node = build_int_2 (0, 0);
6061 TREE_TYPE (void_zero_node) = void_type_node;
6063 string_type_node = build_pointer_type (char_type_node);
6064 const_string_type_node
6065 = build_pointer_type (build_qualified_type (char_type_node,
6068 record_builtin_type (RID_MAX, NULL_PTR, string_type_node);
6071 /* Make a type to be the domain of a few array types
6072 whose domains don't really matter.
6073 200 is small enough that it always fits in size_t
6074 and large enough that it can hold most function names for the
6075 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
6076 array_domain_type = build_index_type (build_int_2 (200, 0));
6078 /* Make a type for arrays of characters.
6079 With luck nothing will ever really depend on the length of this
6081 char_array_type_node
6082 = build_array_type (char_type_node, array_domain_type);
6083 /* Likewise for arrays of ints. */
6085 = build_array_type (integer_type_node, array_domain_type);
6087 /* This is just some anonymous class type. Nobody should ever
6088 need to look inside this envelope. */
6089 class_star_type_node = build_pointer_type (make_lang_type (RECORD_TYPE));
6091 default_function_type
6092 = build_function_type (integer_type_node, NULL_TREE);
6094 ptr_type_node = build_pointer_type (void_type_node);
6096 = build_pointer_type (build_qualified_type (void_type_node,
6099 record_builtin_type (RID_MAX, NULL_PTR, ptr_type_node);
6101 endlink = void_list_node;
6102 int_endlink = tree_cons (NULL_TREE, integer_type_node, endlink);
6103 double_endlink = tree_cons (NULL_TREE, double_type_node, endlink);
6104 unsigned_endlink = tree_cons (NULL_TREE, unsigned_type_node, endlink);
6106 ptr_ftype = build_function_type (ptr_type_node, NULL_TREE);
6107 ptr_ftype_unsigned = build_function_type (ptr_type_node, unsigned_endlink);
6108 sizetype_endlink = tree_cons (NULL_TREE, sizetype, endlink);
6109 /* We realloc here because sizetype could be int or unsigned. S'ok. */
6110 ptr_ftype_sizetype = build_function_type (ptr_type_node, sizetype_endlink);
6112 void_ftype = build_function_type (void_type_node, endlink);
6113 void_ftype_int = build_function_type (void_type_node, int_endlink);
6115 = build_function_type (void_type_node,
6116 tree_cons (NULL_TREE, ptr_type_node, endlink));
6118 = build_exception_variant (void_ftype_ptr,
6119 tree_cons (NULL_TREE, NULL_TREE, NULL_TREE));
6122 = build_function_type (float_type_node,
6123 tree_cons (NULL_TREE, float_type_node, endlink));
6126 = build_function_type (double_type_node, double_endlink);
6128 ldouble_ftype_ldouble
6129 = build_function_type (long_double_type_node,
6130 tree_cons (NULL_TREE, long_double_type_node,
6133 double_ftype_double_double
6134 = build_function_type (double_type_node,
6135 tree_cons (NULL_TREE, double_type_node,
6139 = build_function_type (integer_type_node, int_endlink);
6142 = build_function_type (long_integer_type_node,
6143 tree_cons (NULL_TREE, long_integer_type_node,
6146 int_ftype_cptr_cptr_sizet
6147 = build_function_type (integer_type_node,
6148 tree_cons (NULL_TREE, const_ptr_type_node,
6149 tree_cons (NULL_TREE, const_ptr_type_node,
6150 tree_cons (NULL_TREE,
6154 string_ftype_ptr_ptr /* strcpy prototype */
6155 = build_function_type (string_type_node,
6156 tree_cons (NULL_TREE, string_type_node,
6157 tree_cons (NULL_TREE,
6158 const_string_type_node,
6161 int_ftype_string_string /* strcmp prototype */
6162 = build_function_type (integer_type_node,
6163 tree_cons (NULL_TREE, const_string_type_node,
6164 tree_cons (NULL_TREE,
6165 const_string_type_node,
6168 strlen_ftype /* strlen prototype */
6169 = build_function_type (sizetype,
6170 tree_cons (NULL_TREE, const_string_type_node,
6173 memcpy_ftype /* memcpy prototype */
6174 = build_function_type (ptr_type_node,
6175 tree_cons (NULL_TREE, ptr_type_node,
6176 tree_cons (NULL_TREE, const_ptr_type_node,
6177 sizetype_endlink)));
6179 if (flag_huge_objects)
6180 delta_type_node = long_integer_type_node;
6182 delta_type_node = short_integer_type_node;
6184 builtin_function ("__builtin_constant_p", default_function_type,
6185 BUILT_IN_CONSTANT_P, NULL_PTR);
6187 builtin_return_address_fndecl
6188 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned,
6189 BUILT_IN_RETURN_ADDRESS, NULL_PTR);
6191 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned,
6192 BUILT_IN_FRAME_ADDRESS, NULL_PTR);
6194 builtin_function ("__builtin_alloca", ptr_ftype_sizetype,
6195 BUILT_IN_ALLOCA, "alloca");
6196 builtin_function ("__builtin_ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
6197 /* Define alloca, ffs as builtins.
6198 Declare _exit just to mark it as volatile. */
6199 if (! flag_no_builtin && !flag_no_nonansi_builtin)
6201 temp = builtin_function ("alloca", ptr_ftype_sizetype,
6202 BUILT_IN_ALLOCA, NULL_PTR);
6203 /* Suppress error if redefined as a non-function. */
6204 DECL_BUILT_IN_NONANSI (temp) = 1;
6205 temp = builtin_function ("ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
6206 /* Suppress error if redefined as a non-function. */
6207 DECL_BUILT_IN_NONANSI (temp) = 1;
6208 temp = builtin_function ("_exit", void_ftype_int,
6209 NOT_BUILT_IN, NULL_PTR);
6210 TREE_THIS_VOLATILE (temp) = 1;
6211 TREE_SIDE_EFFECTS (temp) = 1;
6212 /* Suppress error if redefined as a non-function. */
6213 DECL_BUILT_IN_NONANSI (temp) = 1;
6216 builtin_function ("__builtin_abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
6217 builtin_function ("__builtin_fabsf", float_ftype_float, BUILT_IN_FABS,
6219 builtin_function ("__builtin_fabs", double_ftype_double, BUILT_IN_FABS,
6221 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
6223 builtin_function ("__builtin_labs", long_ftype_long,
6224 BUILT_IN_LABS, NULL_PTR);
6225 builtin_function ("__builtin_saveregs", ptr_ftype,
6226 BUILT_IN_SAVEREGS, NULL_PTR);
6227 builtin_function ("__builtin_classify_type", default_function_type,
6228 BUILT_IN_CLASSIFY_TYPE, NULL_PTR);
6229 builtin_function ("__builtin_next_arg", ptr_ftype,
6230 BUILT_IN_NEXT_ARG, NULL_PTR);
6231 builtin_function ("__builtin_args_info", int_ftype_int,
6232 BUILT_IN_ARGS_INFO, NULL_PTR);
6233 builtin_function ("__builtin_setjmp",
6234 build_function_type (integer_type_node,
6235 tree_cons (NULL_TREE, ptr_type_node,
6237 BUILT_IN_SETJMP, NULL_PTR);
6238 builtin_function ("__builtin_longjmp",
6239 build_function_type (integer_type_node,
6240 tree_cons (NULL_TREE, ptr_type_node,
6241 tree_cons (NULL_TREE,
6244 BUILT_IN_LONGJMP, NULL_PTR);
6246 /* Untyped call and return. */
6247 builtin_function ("__builtin_apply_args", ptr_ftype,
6248 BUILT_IN_APPLY_ARGS, NULL_PTR);
6250 temp = tree_cons (NULL_TREE,
6251 build_pointer_type (build_function_type (void_type_node,
6253 tree_cons (NULL_TREE, ptr_ftype_sizetype, NULL_TREE));
6254 builtin_function ("__builtin_apply",
6255 build_function_type (ptr_type_node, temp),
6256 BUILT_IN_APPLY, NULL_PTR);
6257 builtin_function ("__builtin_return", void_ftype_ptr,
6258 BUILT_IN_RETURN, NULL_PTR);
6260 /* Currently under experimentation. */
6261 builtin_function ("__builtin_memcpy", memcpy_ftype,
6262 BUILT_IN_MEMCPY, "memcpy");
6263 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet,
6264 BUILT_IN_MEMCMP, "memcmp");
6265 builtin_function ("__builtin_strcmp", int_ftype_string_string,
6266 BUILT_IN_STRCMP, "strcmp");
6267 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr,
6268 BUILT_IN_STRCPY, "strcpy");
6269 builtin_function ("__builtin_strlen", strlen_ftype,
6270 BUILT_IN_STRLEN, "strlen");
6271 builtin_function ("__builtin_sqrtf", float_ftype_float,
6272 BUILT_IN_FSQRT, "sqrtf");
6273 builtin_function ("__builtin_fsqrt", double_ftype_double,
6274 BUILT_IN_FSQRT, NULL_PTR);
6275 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble,
6276 BUILT_IN_FSQRT, "sqrtl");
6277 builtin_function ("__builtin_sinf", float_ftype_float,
6278 BUILT_IN_SIN, "sinf");
6279 builtin_function ("__builtin_sin", double_ftype_double,
6280 BUILT_IN_SIN, "sin");
6281 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble,
6282 BUILT_IN_SIN, "sinl");
6283 builtin_function ("__builtin_cosf", float_ftype_float,
6284 BUILT_IN_COS, "cosf");
6285 builtin_function ("__builtin_cos", double_ftype_double,
6286 BUILT_IN_COS, "cos");
6287 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble,
6288 BUILT_IN_COS, "cosl");
6290 if (!flag_no_builtin)
6292 builtin_function ("abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
6293 builtin_function ("fabs", double_ftype_double, BUILT_IN_FABS, NULL_PTR);
6294 builtin_function ("labs", long_ftype_long, BUILT_IN_LABS, NULL_PTR);
6295 builtin_function ("fabsf", float_ftype_float, BUILT_IN_FABS, NULL_PTR);
6296 builtin_function ("fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
6298 builtin_function ("memcpy", memcpy_ftype, BUILT_IN_MEMCPY, NULL_PTR);
6299 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet, BUILT_IN_MEMCMP,
6301 builtin_function ("strcmp", int_ftype_string_string, BUILT_IN_STRCMP,
6303 builtin_function ("strcpy", string_ftype_ptr_ptr, BUILT_IN_STRCPY,
6305 builtin_function ("strlen", strlen_ftype, BUILT_IN_STRLEN, NULL_PTR);
6306 builtin_function ("sqrtf", float_ftype_float, BUILT_IN_FSQRT, NULL_PTR);
6307 builtin_function ("sqrt", double_ftype_double, BUILT_IN_FSQRT, NULL_PTR);
6308 builtin_function ("sqrtl", ldouble_ftype_ldouble, BUILT_IN_FSQRT,
6310 builtin_function ("sinf", float_ftype_float, BUILT_IN_SIN, NULL_PTR);
6311 builtin_function ("sin", double_ftype_double, BUILT_IN_SIN, NULL_PTR);
6312 builtin_function ("sinl", ldouble_ftype_ldouble, BUILT_IN_SIN, NULL_PTR);
6313 builtin_function ("cosf", float_ftype_float, BUILT_IN_COS, NULL_PTR);
6314 builtin_function ("cos", double_ftype_double, BUILT_IN_COS, NULL_PTR);
6315 builtin_function ("cosl", ldouble_ftype_ldouble, BUILT_IN_COS, NULL_PTR);
6317 /* Declare these functions volatile
6318 to avoid spurious "control drops through" warnings. */
6319 temp = builtin_function ("abort", void_ftype,
6320 NOT_BUILT_IN, NULL_PTR);
6321 TREE_THIS_VOLATILE (temp) = 1;
6322 TREE_SIDE_EFFECTS (temp) = 1;
6323 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
6325 DECL_BUILT_IN_NONANSI (temp) = 1;
6326 temp = builtin_function ("exit", void_ftype_int,
6327 NOT_BUILT_IN, NULL_PTR);
6328 TREE_THIS_VOLATILE (temp) = 1;
6329 TREE_SIDE_EFFECTS (temp) = 1;
6330 DECL_BUILT_IN_NONANSI (temp) = 1;
6334 /* Support for these has not been written in either expand_builtin
6335 or build_function_call. */
6336 builtin_function ("__builtin_div", default_ftype, BUILT_IN_DIV, NULL_PTR);
6337 builtin_function ("__builtin_ldiv", default_ftype, BUILT_IN_LDIV, NULL_PTR);
6338 builtin_function ("__builtin_ffloor", double_ftype_double, BUILT_IN_FFLOOR,
6340 builtin_function ("__builtin_fceil", double_ftype_double, BUILT_IN_FCEIL,
6342 builtin_function ("__builtin_fmod", double_ftype_double_double,
6343 BUILT_IN_FMOD, NULL_PTR);
6344 builtin_function ("__builtin_frem", double_ftype_double_double,
6345 BUILT_IN_FREM, NULL_PTR);
6346 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int,
6347 BUILT_IN_MEMSET, NULL_PTR);
6348 builtin_function ("__builtin_getexp", double_ftype_double, BUILT_IN_GETEXP,
6350 builtin_function ("__builtin_getman", double_ftype_double, BUILT_IN_GETMAN,
6354 /* C++ extensions */
6356 unknown_type_node = make_node (UNKNOWN_TYPE);
6357 record_unknown_type (unknown_type_node, "unknown type");
6359 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
6360 TREE_TYPE (unknown_type_node) = unknown_type_node;
6362 TREE_TYPE (null_node) = type_for_size (POINTER_SIZE, 0);
6364 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
6366 TYPE_POINTER_TO (unknown_type_node) = unknown_type_node;
6367 TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node;
6369 /* This is for handling opaque types in signatures. */
6370 opaque_type_node = copy_node (ptr_type_node);
6371 TYPE_MAIN_VARIANT (opaque_type_node) = opaque_type_node;
6372 record_builtin_type (RID_MAX, 0, opaque_type_node);
6374 /* This is special for C++ so functions can be overloaded. */
6376 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE)));
6377 wchar_type_size = TYPE_PRECISION (wchar_type_node);
6378 signed_wchar_type_node = make_signed_type (wchar_type_size);
6379 unsigned_wchar_type_node = make_unsigned_type (wchar_type_size);
6381 = TREE_UNSIGNED (wchar_type_node)
6382 ? unsigned_wchar_type_node
6383 : signed_wchar_type_node;
6384 record_builtin_type (RID_WCHAR, "__wchar_t", wchar_type_node);
6386 /* Artificial declaration of wchar_t -- can be bashed */
6387 wchar_decl_node = build_decl (TYPE_DECL, get_identifier ("wchar_t"),
6389 pushdecl (wchar_decl_node);
6391 /* This is for wide string constants. */
6392 wchar_array_type_node
6393 = build_array_type (wchar_type_node, array_domain_type);
6395 if (flag_vtable_thunks)
6397 /* Make sure we get a unique function type, so we can give
6398 its pointer type a name. (This wins for gdb.) */
6399 tree vfunc_type = make_node (FUNCTION_TYPE);
6400 TREE_TYPE (vfunc_type) = integer_type_node;
6401 TYPE_ARG_TYPES (vfunc_type) = NULL_TREE;
6402 layout_type (vfunc_type);
6404 vtable_entry_type = build_pointer_type (vfunc_type);
6408 vtable_entry_type = make_lang_type (RECORD_TYPE);
6409 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
6411 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
6413 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
6415 finish_builtin_type (vtable_entry_type, VTBL_PTR_TYPE, fields, 2,
6418 /* Make this part of an invisible union. */
6419 fields[3] = copy_node (fields[2]);
6420 TREE_TYPE (fields[3]) = delta_type_node;
6421 DECL_NAME (fields[3]) = delta2_identifier;
6422 DECL_MODE (fields[3]) = TYPE_MODE (delta_type_node);
6423 DECL_SIZE (fields[3]) = TYPE_SIZE (delta_type_node);
6424 TREE_UNSIGNED (fields[3]) = 0;
6425 TREE_CHAIN (fields[2]) = fields[3];
6426 vtable_entry_type = build_qualified_type (vtable_entry_type,
6429 record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type);
6432 = build_cplus_array_type (vtable_entry_type, NULL_TREE);
6433 layout_type (vtbl_type_node);
6434 vtbl_type_node = build_qualified_type (vtbl_type_node, TYPE_QUAL_CONST);
6435 record_builtin_type (RID_MAX, NULL_PTR, vtbl_type_node);
6436 vtbl_ptr_type_node = build_pointer_type (vtable_entry_type);
6437 layout_type (vtbl_ptr_type_node);
6438 record_builtin_type (RID_MAX, NULL_PTR, vtbl_ptr_type_node);
6440 /* Simplify life by making a "sigtable_entry_type". Give its
6441 fields names so that the debugger can use them. */
6443 if (flag_handle_signatures)
6445 sigtable_entry_type = make_lang_type (RECORD_TYPE);
6446 fields[0] = build_lang_field_decl (FIELD_DECL, tag_identifier,
6448 fields[1] = build_lang_field_decl (FIELD_DECL, vb_off_identifier,
6450 fields[2] = build_lang_field_decl (FIELD_DECL, delta_identifier,
6452 fields[3] = build_lang_field_decl (FIELD_DECL, index_identifier,
6454 fields[4] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
6457 /* Set the alignment to the max of the alignment of ptr_type_node and
6458 delta_type_node. Double alignment wastes a word on the Sparc. */
6459 finish_builtin_type (sigtable_entry_type, SIGTABLE_PTR_TYPE, fields, 4,
6460 (TYPE_ALIGN (ptr_type_node) > TYPE_ALIGN (delta_type_node))
6464 /* Make this part of an invisible union. */
6465 fields[5] = copy_node (fields[4]);
6466 TREE_TYPE (fields[5]) = delta_type_node;
6467 DECL_NAME (fields[5]) = vt_off_identifier;
6468 DECL_MODE (fields[5]) = TYPE_MODE (delta_type_node);
6469 DECL_SIZE (fields[5]) = TYPE_SIZE (delta_type_node);
6470 TREE_UNSIGNED (fields[5]) = 0;
6471 TREE_CHAIN (fields[4]) = fields[5];
6473 sigtable_entry_type = build_qualified_type (sigtable_entry_type,
6475 record_builtin_type (RID_MAX, SIGTABLE_PTR_TYPE, sigtable_entry_type);
6478 std_node = build_decl (NAMESPACE_DECL,
6479 get_identifier (flag_honor_std ? "fake std":"std"),
6481 pushdecl (std_node);
6483 global_type_node = make_node (LANG_TYPE);
6484 record_unknown_type (global_type_node, "global type");
6487 current_lang_name = lang_name_cplusplus;
6490 tree bad_alloc_type_node, newtype, deltype;
6492 push_namespace (get_identifier ("std"));
6493 bad_alloc_type_node = xref_tag
6494 (class_type_node, get_identifier ("bad_alloc"), 1);
6497 newtype = build_exception_variant
6498 (ptr_ftype_sizetype, build_tree_list (NULL_TREE, bad_alloc_type_node));
6499 deltype = build_exception_variant
6500 (void_ftype_ptr, build_tree_list (NULL_TREE, NULL_TREE));
6501 auto_function (ansi_opname[(int) NEW_EXPR], newtype, NOT_BUILT_IN);
6502 auto_function (ansi_opname[(int) VEC_NEW_EXPR], newtype, NOT_BUILT_IN);
6503 global_delete_fndecl
6504 = auto_function (ansi_opname[(int) DELETE_EXPR], deltype, NOT_BUILT_IN);
6505 auto_function (ansi_opname[(int) VEC_DELETE_EXPR], deltype, NOT_BUILT_IN);
6509 = define_function ("__pure_virtual", void_ftype,
6510 NOT_BUILT_IN, 0, 0);
6512 /* Perform other language dependent initializations. */
6513 init_class_processing ();
6514 init_init_processing ();
6515 init_search_processing ();
6517 init_rtti_processing ();
6519 if (flag_exceptions)
6520 init_exception_processing ();
6523 flag_inline_functions = 0;
6526 if (! supports_one_only ())
6529 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
6530 declare_function_name ();
6532 /* Prepare to check format strings against argument lists. */
6533 init_function_format_info ();
6535 /* Show we use EH for cleanups. */
6536 using_eh_for_cleanups ();
6538 print_error_function = lang_print_error_function;
6539 lang_get_alias_set = &c_get_alias_set;
6541 /* Maintain consistency. Perhaps we should just complain if they
6542 say -fwritable-strings? */
6543 if (flag_writable_strings)
6544 flag_const_strings = 0;
6547 /* Function to print any language-specific context for an error message. */
6550 lang_print_error_function (file)
6553 default_print_error_function (file);
6554 maybe_print_template_context ();
6557 /* Make a definition for a builtin function named NAME and whose data type
6558 is TYPE. TYPE should be a function type with argument types.
6559 FUNCTION_CODE tells later passes how to compile calls to this function.
6560 See tree.h for its possible values.
6562 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
6563 the name to be called if we can't opencode the function. */
6566 define_function (name, type, function_code, pfn, library_name)
6569 enum built_in_function function_code;
6570 void (*pfn) PROTO((tree));
6573 tree decl = build_lang_decl (FUNCTION_DECL, get_identifier (name), type);
6574 DECL_EXTERNAL (decl) = 1;
6575 TREE_PUBLIC (decl) = 1;
6576 DECL_ARTIFICIAL (decl) = 1;
6578 my_friendly_assert (DECL_CONTEXT (decl) == NULL_TREE, 392);
6579 DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
6581 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
6582 we cannot change DECL_ASSEMBLER_NAME until we have installed this
6583 function in the namespace. */
6584 if (pfn) (*pfn) (decl);
6586 DECL_ASSEMBLER_NAME (decl) = get_identifier (library_name);
6587 make_function_rtl (decl);
6588 if (function_code != NOT_BUILT_IN)
6590 DECL_BUILT_IN (decl) = 1;
6591 DECL_FUNCTION_CODE (decl) = function_code;
6596 /* When we call finish_struct for an anonymous union, we create
6597 default copy constructors and such. But, an anonymous union
6598 shouldn't have such things; this function undoes the damage to the
6599 anonymous union type T.
6601 (The reason that we create the synthesized methods is that we don't
6602 distinguish `union { int i; }' from `typedef union { int i; } U'.
6603 The first is an anonymous union; the second is just an ordinary
6607 fixup_anonymous_union (t)
6612 /* Wipe out memory of synthesized methods */
6613 TYPE_HAS_CONSTRUCTOR (t) = 0;
6614 TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0;
6615 TYPE_HAS_INIT_REF (t) = 0;
6616 TYPE_HAS_CONST_INIT_REF (t) = 0;
6617 TYPE_HAS_ASSIGN_REF (t) = 0;
6618 TYPE_HAS_ASSIGNMENT (t) = 0;
6619 TYPE_HAS_CONST_ASSIGN_REF (t) = 0;
6621 /* Splice the implicitly generated functions out of the TYPE_METHODS
6623 q = &TYPE_METHODS (t);
6626 if (DECL_ARTIFICIAL (*q))
6627 *q = TREE_CHAIN (*q);
6629 q = &TREE_CHAIN (*q);
6632 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
6633 function members. */
6634 if (TYPE_METHODS (t))
6635 error ("an anonymous union cannot have function members");
6638 /* Make sure that a declaration with no declarator is well-formed, i.e.
6639 just defines a tagged type or anonymous union.
6641 Returns the type defined, if any. */
6644 check_tag_decl (declspecs)
6648 tree ob_modifier = NULL_TREE;
6650 register tree t = NULL_TREE;
6652 for (link = declspecs; link; link = TREE_CHAIN (link))
6654 register tree value = TREE_VALUE (link);
6660 if (IS_AGGR_TYPE (value) || TREE_CODE (value) == ENUMERAL_TYPE)
6662 my_friendly_assert (TYPE_MAIN_DECL (value) != NULL_TREE, 261);
6666 else if (value == ridpointers[(int) RID_FRIEND])
6668 if (current_class_type == NULL_TREE
6669 || current_scope () != current_class_type)
6670 ob_modifier = value;
6672 else if (value == ridpointers[(int) RID_STATIC]
6673 || value == ridpointers[(int) RID_EXTERN]
6674 || value == ridpointers[(int) RID_AUTO]
6675 || value == ridpointers[(int) RID_REGISTER]
6676 || value == ridpointers[(int) RID_INLINE]
6677 || value == ridpointers[(int) RID_VIRTUAL]
6678 || value == ridpointers[(int) RID_CONST]
6679 || value == ridpointers[(int) RID_VOLATILE]
6680 || value == ridpointers[(int) RID_EXPLICIT])
6681 ob_modifier = value;
6685 error ("multiple types in one declaration");
6687 /* Inside a class, we might be in a friend or access declaration.
6688 Until we have a good way of detecting the latter, don't warn. */
6689 if (t == NULL_TREE && ! current_class_type)
6690 pedwarn ("declaration does not declare anything");
6691 else if (t && ANON_UNION_TYPE_P (t))
6692 /* Anonymous unions are objects, so they can have specifiers. */;
6693 else if (ob_modifier)
6695 if (ob_modifier == ridpointers[(int) RID_INLINE]
6696 || ob_modifier == ridpointers[(int) RID_VIRTUAL])
6697 cp_error ("`%D' can only be specified for functions", ob_modifier);
6698 else if (ob_modifier == ridpointers[(int) RID_FRIEND])
6699 cp_error ("`%D' can only be specified inside a class", ob_modifier);
6700 else if (ob_modifier == ridpointers[(int) RID_EXPLICIT])
6701 cp_error ("`%D' can only be specified for constructors",
6704 cp_error ("`%D' can only be specified for objects and functions",
6711 /* Called when a declaration is seen that contains no names to declare.
6712 If its type is a reference to a structure, union or enum inherited
6713 from a containing scope, shadow that tag name for the current scope
6714 with a forward reference.
6715 If its type defines a new named structure or union
6716 or defines an enum, it is valid but we need not do anything here.
6717 Otherwise, it is an error.
6719 C++: may have to grok the declspecs to learn about static,
6720 complain for anonymous unions. */
6723 shadow_tag (declspecs)
6726 tree t = check_tag_decl (declspecs);
6729 maybe_process_partial_specialization (t);
6731 /* This is where the variables in an anonymous union are
6732 declared. An anonymous union declaration looks like:
6734 because there is no declarator after the union, the parser
6735 sends that declaration here. */
6736 if (t && ANON_UNION_TYPE_P (t))
6738 fixup_anonymous_union (t);
6740 if (TYPE_FIELDS (t))
6742 tree decl = grokdeclarator (NULL_TREE, declspecs, NORMAL, 0,
6744 finish_anon_union (decl);
6749 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
6752 groktypename (typename)
6755 if (TREE_CODE (typename) != TREE_LIST)
6757 return grokdeclarator (TREE_VALUE (typename),
6758 TREE_PURPOSE (typename),
6759 TYPENAME, 0, NULL_TREE);
6762 /* Decode a declarator in an ordinary declaration or data definition.
6763 This is called as soon as the type information and variable name
6764 have been parsed, before parsing the initializer if any.
6765 Here we create the ..._DECL node, fill in its type,
6766 and put it on the list of decls for the current context.
6767 The ..._DECL node is returned as the value.
6769 Exception: for arrays where the length is not specified,
6770 the type is left null, to be filled in by `cp_finish_decl'.
6772 Function definitions do not come here; they go to start_function
6773 instead. However, external and forward declarations of functions
6774 do go through here. Structure field declarations are done by
6775 grokfield and not through here. */
6777 /* Set this to zero to debug not using the temporary obstack
6778 to parse initializers. */
6779 int debug_temp_inits = 1;
6782 start_decl (declarator, declspecs, initialized, attributes, prefix_attributes)
6783 tree declarator, declspecs;
6785 tree attributes, prefix_attributes;
6788 register tree type, tem;
6790 extern int have_extern_spec;
6791 extern int used_extern_spec;
6794 /* See code below that used this. */
6795 int init_written = initialized;
6798 /* This should only be done once on the top most decl. */
6799 if (have_extern_spec && !used_extern_spec)
6801 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"),
6803 used_extern_spec = 1;
6806 decl = grokdeclarator (declarator, declspecs, NORMAL, initialized,
6808 if (decl == NULL_TREE || TREE_CODE (decl) == VOID_TYPE)
6811 type = TREE_TYPE (decl);
6813 /* Don't lose if destructors must be executed at file-level. */
6814 if (! processing_template_decl && TREE_STATIC (decl)
6815 && TYPE_NEEDS_DESTRUCTOR (complete_type (type))
6816 && !TREE_PERMANENT (decl))
6818 push_obstacks (&permanent_obstack, &permanent_obstack);
6819 decl = copy_node (decl);
6820 if (TREE_CODE (type) == ARRAY_TYPE)
6822 tree itype = TYPE_DOMAIN (type);
6823 if (itype && ! TREE_PERMANENT (itype))
6825 itype = build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype)));
6826 type = build_cplus_array_type (TREE_TYPE (type), itype);
6827 TREE_TYPE (decl) = type;
6834 = (TREE_CODE (decl) == FUNCTION_DECL && DECL_VIRTUAL_P (decl))
6835 ? DECL_CLASS_CONTEXT (decl)
6836 : DECL_CONTEXT (decl);
6838 if (initialized && context && TREE_CODE (context) == NAMESPACE_DECL
6839 && context != current_namespace && TREE_CODE (decl) == VAR_DECL)
6841 /* When parsing the initializer, lookup should use the object's
6843 push_decl_namespace (context);
6846 /* We are only interested in class contexts, later. */
6847 if (context && TREE_CODE (context) == NAMESPACE_DECL)
6848 context = NULL_TREE;
6851 /* Is it valid for this decl to have an initializer at all?
6852 If not, set INITIALIZED to zero, which will indirectly
6853 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6854 switch (TREE_CODE (decl))
6857 /* typedef foo = bar means give foo the same type as bar.
6858 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
6859 Any other case of an initialization in a TYPE_DECL is an error. */
6860 if (pedantic || list_length (declspecs) > 1)
6862 cp_error ("typedef `%D' is initialized", decl);
6868 cp_error ("function `%#D' is initialized like a variable", decl);
6873 if (! processing_template_decl)
6875 if (type != error_mark_node)
6877 if (TYPE_SIZE (type) != NULL_TREE
6878 && ! TREE_CONSTANT (TYPE_SIZE (type)))
6881 ("variable-sized object `%D' may not be initialized",
6886 if (TREE_CODE (type) == ARRAY_TYPE
6887 && TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
6890 ("elements of array `%#D' have incomplete type", decl);
6899 if (! toplevel_bindings_p ()
6900 && DECL_EXTERNAL (decl))
6901 cp_warning ("declaration of `%#D' has `extern' and is initialized",
6903 DECL_EXTERNAL (decl) = 0;
6904 if (toplevel_bindings_p ())
6905 TREE_STATIC (decl) = 1;
6907 /* Tell `pushdecl' this is an initialized decl
6908 even though we don't yet have the initializer expression.
6909 Also tell `cp_finish_decl' it may store the real initializer. */
6910 DECL_INITIAL (decl) = error_mark_node;
6913 if (context && TYPE_SIZE (complete_type (context)) != NULL_TREE)
6915 pushclass (context, 2);
6917 if (TREE_CODE (decl) == VAR_DECL)
6919 tree field = lookup_field (context, DECL_NAME (decl), 0, 0);
6920 if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
6921 cp_error ("`%#D' is not a static member of `%#T'", decl, context);
6924 if (DECL_CONTEXT (field) != context)
6926 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'",
6927 DECL_CONTEXT (field), DECL_NAME (decl),
6928 context, DECL_NAME (decl));
6929 DECL_CONTEXT (decl) = DECL_CONTEXT (field);
6931 /* Static data member are tricky; an in-class initialization
6932 still doesn't provide a definition, so the in-class
6933 declaration will have DECL_EXTERNAL set, but will have an
6934 initialization. Thus, duplicate_decls won't warn
6935 about this situation, and so we check here. */
6936 if (DECL_INITIAL (decl) && DECL_INITIAL (field))
6937 cp_error ("duplicate initialization of %D", decl);
6938 if (duplicate_decls (decl, field))
6944 tree field = check_classfn (context, decl);
6945 if (field && duplicate_decls (decl, field))
6949 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
6950 DECL_IN_AGGR_P (decl) = 0;
6951 if ((DECL_LANG_SPECIFIC (decl) && DECL_USE_TEMPLATE (decl))
6952 || CLASSTYPE_USE_TEMPLATE (context))
6954 SET_DECL_TEMPLATE_SPECIALIZATION (decl);
6955 /* [temp.expl.spec] An explicit specialization of a static data
6956 member of a template is a definition if the declaration
6957 includes an initializer; otherwise, it is a declaration.
6959 We check for processing_specialization so this only applies
6960 to the new specialization syntax. */
6961 if (DECL_INITIAL (decl) == NULL_TREE && processing_specialization)
6962 DECL_EXTERNAL (decl) = 1;
6965 if (DECL_EXTERNAL (decl) && ! DECL_TEMPLATE_SPECIALIZATION (decl))
6966 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6970 #ifdef SET_DEFAULT_DECL_ATTRIBUTES
6971 SET_DEFAULT_DECL_ATTRIBUTES (decl, attributes);
6974 /* Set attributes here so if duplicate decl, will have proper attributes. */
6975 cplus_decl_attributes (decl, attributes, prefix_attributes);
6977 /* Add this decl to the current binding level, but not if it
6978 comes from another scope, e.g. a static member variable.
6979 TEM may equal DECL or it may be a previous decl of the same name. */
6981 if ((TREE_CODE (decl) != PARM_DECL && DECL_CONTEXT (decl) != NULL_TREE
6982 /* Definitions of namespace members outside their namespace are
6984 && TREE_CODE (DECL_CONTEXT (decl)) != NAMESPACE_DECL)
6985 || (TREE_CODE (decl) == TEMPLATE_DECL && !namespace_bindings_p ())
6986 || TREE_CODE (type) == LANG_TYPE
6987 /* The declaration of template specializations does not affect
6988 the functions available for overload resolution, so we do not
6990 || (TREE_CODE (decl) == FUNCTION_DECL
6991 && DECL_TEMPLATE_SPECIALIZATION (decl)))
6994 tem = pushdecl (decl);
6996 if (processing_template_decl)
6998 if (! current_function_decl)
6999 tem = push_template_decl (tem);
7000 else if (minimal_parse_mode)
7002 = build_min_nt (DECL_STMT, copy_to_permanent (declarator),
7003 copy_to_permanent (declspecs),
7008 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
7009 /* Tell the back-end to use or not use .common as appropriate. If we say
7010 -fconserve-space, we want this to save .data space, at the expense of
7011 wrong semantics. If we say -fno-conserve-space, we want this to
7012 produce errors about redefs; to do this we force variables into the
7014 DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem);
7017 if (! processing_template_decl)
7020 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
7021 push_obstacks_nochange ();
7024 /* We have no way of knowing whether the initializer will need to be
7025 evaluated at run-time or not until we've parsed it, so let's just put
7026 it in the permanent obstack. (jason) */
7028 && ! (TREE_CODE (tem) == PARM_DECL
7029 || (TREE_READONLY (tem)
7030 && (TREE_CODE (tem) == VAR_DECL
7031 || TREE_CODE (tem) == FIELD_DECL))))
7033 /* When parsing and digesting the initializer,
7034 use temporary storage. Do this even if we will ignore the value. */
7035 if (toplevel_bindings_p () && debug_temp_inits)
7037 if (processing_template_decl
7038 || TYPE_NEEDS_CONSTRUCTING (type)
7039 || TREE_CODE (type) == REFERENCE_TYPE)
7040 /* In this case, the initializer must lay down in permanent
7041 storage, since it will be saved until `finish_file' is run. */
7044 temporary_allocation ();
7056 tree type = TREE_TYPE (decl);
7057 int initialized = (DECL_INITIAL (decl) != NULL_TREE);
7059 /* If this type of object needs a cleanup, and control may
7060 jump past it, make a new binding level so that it is cleaned
7061 up only when it is initialized first. */
7062 if (TYPE_NEEDS_DESTRUCTOR (type)
7063 && current_binding_level->more_cleanups_ok == 0)
7064 pushlevel_temporary (1);
7067 /* Is it valid for this decl to have an initializer at all?
7068 If not, set INITIALIZED to zero, which will indirectly
7069 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
7071 /* Don't allow initializations for incomplete types except for
7072 arrays which might be completed by the initialization. */
7073 if (type == error_mark_node)
7074 ; /* Don't complain again. */
7075 else if (TYPE_SIZE (complete_type (type)) != NULL_TREE)
7076 ; /* A complete type is ok. */
7077 else if (TREE_CODE (type) != ARRAY_TYPE)
7079 cp_error ("variable `%#D' has initializer but incomplete type",
7082 type = TREE_TYPE (decl) = error_mark_node;
7084 else if (TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
7086 if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
7087 cp_error ("elements of array `%#D' have incomplete type", decl);
7088 /* else we already gave an error in start_decl. */
7094 && TREE_CODE (decl) != TYPE_DECL
7095 && TREE_CODE (decl) != TEMPLATE_DECL
7096 && IS_AGGR_TYPE (type) && ! DECL_EXTERNAL (decl))
7098 if ((! processing_template_decl || ! uses_template_parms (type))
7099 && TYPE_SIZE (complete_type (type)) == NULL_TREE)
7101 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
7103 /* Change the type so that assemble_variable will give
7104 DECL an rtl we can live with: (mem (const_int 0)). */
7105 type = TREE_TYPE (decl) = error_mark_node;
7109 /* If any base type in the hierarchy of TYPE needs a constructor,
7110 then we set initialized to 1. This way any nodes which are
7111 created for the purposes of initializing this aggregate
7112 will live as long as it does. This is necessary for global
7113 aggregates which do not have their initializers processed until
7114 the end of the file. */
7115 initialized = TYPE_NEEDS_CONSTRUCTING (type);
7120 /* We don't do this yet for GNU C++. */
7121 /* For a local variable, define the RTL now. */
7122 if (! toplevel_bindings_p ()
7123 /* But not if this is a duplicate decl
7124 and we preserved the rtl from the previous one
7125 (which may or may not happen). */
7126 && DECL_RTL (tem) == NULL_RTX)
7128 if (TYPE_SIZE (TREE_TYPE (tem)) != NULL_TREE)
7130 else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE
7131 && DECL_INITIAL (tem) != NULL_TREE)
7137 DECL_INITIAL (decl) = NULL_TREE;
7140 /* Handle initialization of references.
7141 These three arguments are from `cp_finish_decl', and have the
7142 same meaning here that they do there.
7144 Quotes on semantics can be found in ARM 8.4.3. */
7147 grok_reference_init (decl, type, init)
7148 tree decl, type, init;
7152 if (init == NULL_TREE)
7154 if ((DECL_LANG_SPECIFIC (decl) == 0
7155 || DECL_IN_AGGR_P (decl) == 0)
7156 && ! DECL_THIS_EXTERN (decl))
7158 cp_error ("`%D' declared as reference but not initialized", decl);
7159 if (TREE_CODE (decl) == VAR_DECL)
7160 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
7165 if (init == error_mark_node)
7168 if (TREE_CODE (type) == REFERENCE_TYPE
7169 && TREE_CODE (init) == CONSTRUCTOR)
7171 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl);
7175 if (TREE_CODE (init) == TREE_LIST)
7176 init = build_compound_expr (init);
7178 if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE)
7179 init = convert_from_reference (init);
7181 if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
7182 && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
7184 /* Note: default conversion is only called in very special cases. */
7185 init = default_conversion (init);
7188 tmp = convert_to_reference
7189 (type, init, CONV_IMPLICIT,
7190 LOOKUP_SPECULATIVELY|LOOKUP_NORMAL|DIRECT_BIND, decl);
7192 if (tmp == error_mark_node)
7194 else if (tmp != NULL_TREE)
7197 DECL_INITIAL (decl) = save_expr (init);
7201 cp_error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init));
7205 /* ?? Can this be optimized in some cases to
7206 hand back the DECL_INITIAL slot?? */
7207 if (TYPE_SIZE (TREE_TYPE (type)))
7209 init = convert_from_reference (decl);
7210 if (TREE_PERMANENT (decl))
7211 init = copy_to_permanent (init);
7212 SET_DECL_REFERENCE_SLOT (decl, init);
7215 if (TREE_STATIC (decl) && ! TREE_CONSTANT (DECL_INITIAL (decl)))
7217 expand_static_init (decl, DECL_INITIAL (decl));
7218 DECL_INITIAL (decl) = NULL_TREE;
7223 if (TREE_CODE (decl) == VAR_DECL)
7224 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
7228 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
7229 mucking with forces it does not comprehend (i.e. initialization with a
7230 constructor). If we are at global scope and won't go into COMMON, fill
7231 it in with a dummy CONSTRUCTOR to force the variable into .data;
7232 otherwise we can use error_mark_node. */
7235 obscure_complex_init (decl, init)
7238 if (! flag_no_inline && TREE_STATIC (decl))
7240 if (extract_init (decl, init))
7244 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
7245 if (toplevel_bindings_p () && ! DECL_COMMON (decl))
7246 DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE,
7250 DECL_INITIAL (decl) = error_mark_node;
7255 /* Issue an error message if DECL is an uninitialized const variable. */
7258 check_for_uninitialized_const_var (decl)
7261 tree type = TREE_TYPE (decl);
7263 /* ``Unless explicitly declared extern, a const object does not have
7264 external linkage and must be initialized. ($8.4; $12.1)'' ARM
7266 if (TREE_CODE (decl) == VAR_DECL
7267 && TREE_CODE (type) != REFERENCE_TYPE
7268 && CP_TYPE_CONST_P (type)
7269 && !TYPE_NEEDS_CONSTRUCTING (type)
7270 && !DECL_INITIAL (decl))
7271 cp_error ("uninitialized const `%D'", decl);
7274 /* Finish processing of a declaration;
7275 install its line number and initial value.
7276 If the length of an array type is not known before,
7277 it must be determined now, from the initial value, or it is an error.
7279 Call `pop_obstacks' iff NEED_POP is nonzero.
7281 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
7282 for aggregates that have constructors alive on the permanent obstack,
7283 so that the global initializing functions can be written at the end.
7285 INIT0 holds the value of an initializer that should be allowed to escape
7288 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
7289 if the (init) syntax was used.
7291 For functions that take default parameters, DECL points to its
7292 "maximal" instantiation. `cp_finish_decl' must then also declared its
7293 subsequently lower and lower forms of instantiation, checking for
7294 ambiguity as it goes. This can be sped up later. */
7297 cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
7304 tree cleanup = NULL_TREE, ttype = NULL_TREE;
7306 int temporary = allocation_temporary_p ();
7307 char *asmspec = NULL;
7308 int was_readonly = 0;
7309 int already_used = 0;
7311 /* If this is 0, then we did not change obstacks. */
7315 error ("assignment (not initialization) in declaration");
7319 /* If a name was specified, get the string. */
7321 asmspec = TREE_STRING_POINTER (asmspec_tree);
7323 if (init && TREE_CODE (init) == NAMESPACE_DECL)
7325 cp_error ("Cannot initialize `%D' to namespace `%D'",
7330 if (current_class_type
7331 && DECL_REAL_CONTEXT (decl) == current_class_type
7332 && TYPE_BEING_DEFINED (current_class_type)
7333 && (DECL_INITIAL (decl) || init))
7334 DECL_DEFINED_IN_CLASS_P (decl) = 1;
7336 if (TREE_CODE (decl) == VAR_DECL
7337 && DECL_CONTEXT (decl)
7338 && TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL
7339 && DECL_CONTEXT (decl) != current_namespace
7342 /* Leave the namespace of the object. */
7343 pop_decl_namespace ();
7346 /* If the type of the thing we are declaring either has
7347 a constructor, or has a virtual function table pointer,
7348 AND its initialization was accepted by `start_decl',
7349 then we stayed on the permanent obstack through the
7350 declaration, otherwise, changed obstacks as GCC would. */
7352 type = TREE_TYPE (decl);
7354 if (type == error_mark_node)
7356 if (toplevel_bindings_p () && temporary)
7357 end_temporary_allocation ();
7362 if (processing_template_decl)
7364 if (init && DECL_INITIAL (decl))
7365 DECL_INITIAL (decl) = init;
7366 if (minimal_parse_mode && ! DECL_ARTIFICIAL (decl))
7368 tree stmt = DECL_VINDEX (decl);
7369 /* If the decl is declaring a member of a local class (in a
7370 template function), the DECL_VINDEX will either be NULL,
7371 or it will be an actual virtual function index, not a
7373 if (stmt != NULL_TREE && TREE_CODE (stmt) == DECL_STMT)
7375 DECL_VINDEX (decl) = NULL_TREE;
7376 TREE_OPERAND (stmt, 2) = copy_to_permanent (init);
7383 /* Take care of TYPE_DECLs up front. */
7384 if (TREE_CODE (decl) == TYPE_DECL)
7386 if (init && DECL_INITIAL (decl))
7388 /* typedef foo = bar; store the type of bar as the type of foo. */
7389 TREE_TYPE (decl) = type = TREE_TYPE (init);
7390 DECL_INITIAL (decl) = init = NULL_TREE;
7392 if (type != error_mark_node
7393 && IS_AGGR_TYPE (type) && DECL_NAME (decl))
7395 if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
7396 cp_warning ("shadowing previous type declaration of `%#D'", decl);
7397 set_identifier_type_value (DECL_NAME (decl), type);
7398 CLASSTYPE_GOT_SEMICOLON (type) = 1;
7400 GNU_xref_decl (current_function_decl, decl);
7402 /* If we have installed this as the canonical typedef for this
7403 type, and that type has not been defined yet, delay emitting
7404 the debug information for it, as we will emit it later. */
7405 if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl
7406 && TYPE_SIZE (TREE_TYPE (decl)) == NULL_TREE)
7407 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
7409 rest_of_decl_compilation (decl, NULL_PTR,
7410 DECL_CONTEXT (decl) == NULL_TREE, at_eof);
7413 if (TREE_CODE (decl) != FUNCTION_DECL)
7415 ttype = target_type (type);
7418 if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl)
7419 && TYPE_NEEDS_CONSTRUCTING (type))
7422 /* Currently, GNU C++ puts constants in text space, making them
7423 impossible to initialize. In the future, one would hope for
7424 an operating system which understood the difference between
7425 initialization and the running of a program. */
7427 TREE_READONLY (decl) = 0;
7430 if (TREE_CODE (decl) == FIELD_DECL)
7432 if (init && init != error_mark_node)
7433 my_friendly_assert (TREE_PERMANENT (init), 147);
7437 /* This must override the asm specifier which was placed
7438 by grokclassfn. Lay this out fresh. */
7439 DECL_RTL (TREE_TYPE (decl)) = NULL_RTX;
7440 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
7441 make_decl_rtl (decl, asmspec, 0);
7444 /* If `start_decl' didn't like having an initialization, ignore it now. */
7445 else if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE)
7447 else if (DECL_EXTERNAL (decl))
7449 else if (TREE_CODE (type) == REFERENCE_TYPE
7450 || (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE_REFERENCE (type)))
7452 if (TREE_STATIC (decl))
7453 make_decl_rtl (decl, NULL_PTR,
7454 toplevel_bindings_p ()
7455 || pseudo_global_level_p ());
7456 grok_reference_init (decl, type, init);
7460 GNU_xref_decl (current_function_decl, decl);
7462 if (TREE_CODE (decl) == FIELD_DECL)
7464 else if (TREE_CODE (decl) == CONST_DECL)
7466 my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148);
7468 DECL_INITIAL (decl) = init;
7470 /* This will keep us from needing to worry about our obstacks. */
7471 my_friendly_assert (init != NULL_TREE, 149);
7476 if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type))
7478 if (TREE_CODE (type) == ARRAY_TYPE)
7479 init = digest_init (type, init, (tree *) 0);
7480 else if (TREE_CODE (init) == CONSTRUCTOR
7481 && TREE_HAS_CONSTRUCTOR (init))
7483 if (TYPE_NON_AGGREGATE_CLASS (type))
7485 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
7487 init = error_mark_node;
7490 goto dont_use_constructor;
7495 dont_use_constructor:
7496 if (TREE_CODE (init) != TREE_VEC)
7497 init = store_init_value (decl, init);
7501 /* We must hide the initializer so that expand_decl
7502 won't try to do something it does not understand. */
7503 init = obscure_complex_init (decl, init);
7505 else if (DECL_EXTERNAL (decl))
7507 else if (TREE_CODE_CLASS (TREE_CODE (type)) == 't'
7508 && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type)))
7511 while (TREE_CODE (ctype) == ARRAY_TYPE)
7512 ctype = TREE_TYPE (ctype);
7513 if (! TYPE_NEEDS_CONSTRUCTING (ctype))
7515 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype))
7516 cp_error ("structure `%D' with uninitialized const members", decl);
7517 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype))
7518 cp_error ("structure `%D' with uninitialized reference members",
7522 check_for_uninitialized_const_var (decl);
7524 if (TYPE_SIZE (type) != NULL_TREE
7525 && TYPE_NEEDS_CONSTRUCTING (type))
7526 init = obscure_complex_init (decl, NULL_TREE);
7530 check_for_uninitialized_const_var (decl);
7532 /* For top-level declaration, the initial value was read in
7533 the temporary obstack. MAXINDEX, rtl, etc. to be made below
7534 must go in the permanent obstack; but don't discard the
7535 temporary data yet. */
7537 if (toplevel_bindings_p () && temporary)
7538 end_temporary_allocation ();
7540 /* Deduce size of array from initialization, if not already known. */
7542 if (TREE_CODE (type) == ARRAY_TYPE
7543 && TYPE_DOMAIN (type) == NULL_TREE
7544 && TREE_CODE (decl) != TYPE_DECL)
7547 = (TREE_STATIC (decl)
7548 /* Even if pedantic, an external linkage array
7549 may have incomplete type at first. */
7550 ? pedantic && ! DECL_EXTERNAL (decl)
7551 : !DECL_EXTERNAL (decl));
7552 tree initializer = init ? init : DECL_INITIAL (decl);
7553 int failure = complete_array_type (type, initializer, do_default);
7556 cp_error ("initializer fails to determine size of `%D'", decl);
7561 cp_error ("array size missing in `%D'", decl);
7562 /* If a `static' var's size isn't known, make it extern as
7563 well as static, so it does not get allocated. If it's not
7564 `static', then don't mark it extern; finish_incomplete_decl
7565 will give it a default size and it will get allocated. */
7566 else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
7567 DECL_EXTERNAL (decl) = 1;
7570 if (pedantic && TYPE_DOMAIN (type) != NULL_TREE
7571 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
7573 cp_error ("zero-size array `%D'", decl);
7575 layout_decl (decl, 0);
7578 if (TREE_CODE (decl) == VAR_DECL)
7580 if (DECL_SIZE (decl) == NULL_TREE
7581 && TYPE_SIZE (complete_type (TREE_TYPE (decl))) != NULL_TREE)
7582 layout_decl (decl, 0);
7584 if (TREE_STATIC (decl) && DECL_SIZE (decl) == NULL_TREE)
7586 /* A static variable with an incomplete type:
7587 that is an error if it is initialized.
7588 Otherwise, let it through, but if it is not `extern'
7589 then it may cause an error message later. */
7590 if (DECL_INITIAL (decl) != NULL_TREE)
7591 cp_error ("storage size of `%D' isn't known", decl);
7594 else if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
7596 /* An automatic variable with an incomplete type: that is an error.
7597 Don't talk about array types here, since we took care of that
7598 message in grokdeclarator. */
7599 cp_error ("storage size of `%D' isn't known", decl);
7600 TREE_TYPE (decl) = error_mark_node;
7602 else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype))
7603 /* Let debugger know it should output info for this type. */
7604 note_debug_info_needed (ttype);
7606 if (TREE_STATIC (decl) && DECL_CLASS_SCOPE_P (decl))
7607 note_debug_info_needed (DECL_CONTEXT (decl));
7609 if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
7610 && DECL_SIZE (decl) != NULL_TREE
7611 && ! TREE_CONSTANT (DECL_SIZE (decl)))
7613 if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
7614 constant_expression_warning (DECL_SIZE (decl));
7616 cp_error ("storage size of `%D' isn't constant", decl);
7619 if (! DECL_EXTERNAL (decl) && TYPE_NEEDS_DESTRUCTOR (type)
7620 /* Cleanups for static variables are handled by `finish_file'. */
7621 && ! TREE_STATIC (decl))
7623 int yes = suspend_momentary ();
7624 cleanup = maybe_build_cleanup (decl);
7625 resume_momentary (yes);
7628 /* PARM_DECLs get cleanups, too. */
7629 else if (TREE_CODE (decl) == PARM_DECL && TYPE_NEEDS_DESTRUCTOR (type))
7632 end_temporary_allocation ();
7633 cleanup = maybe_build_cleanup (decl);
7635 resume_temporary_allocation ();
7638 /* Output the assembler code and/or RTL code for variables and functions,
7639 unless the type is an undefined structure or union.
7640 If not, it will get done when the type is completed. */
7642 was_incomplete = (DECL_SIZE (decl) == NULL_TREE);
7644 if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL
7645 || TREE_CODE (decl) == RESULT_DECL)
7647 /* ??? FIXME: What about nested classes? */
7648 int toplev = toplevel_bindings_p () || pseudo_global_level_p ();
7650 = (TREE_STATIC (decl) && TYPE_NEEDS_DESTRUCTOR (type)
7651 && allocation_temporary_p ());
7654 end_temporary_allocation ();
7656 /* Static data in a function with comdat linkage also has comdat
7658 if (TREE_CODE (decl) == VAR_DECL
7659 && TREE_STATIC (decl)
7660 /* Don't mess with __FUNCTION__. */
7661 && ! TREE_ASM_WRITTEN (decl)
7662 && current_function_decl
7663 && DECL_CONTEXT (decl) == current_function_decl
7664 && (DECL_THIS_INLINE (current_function_decl)
7665 || DECL_TEMPLATE_INSTANTIATION (current_function_decl))
7666 && TREE_PUBLIC (current_function_decl))
7668 /* Rather than try to get this right with inlining, we suppress
7669 inlining of such functions. */
7670 current_function_cannot_inline
7671 = "function with static variable cannot be inline";
7673 /* If flag_weak, we don't need to mess with this, as we can just
7674 make the function weak, and let it refer to its unique local
7675 copy. This works because we don't allow the function to be
7679 if (DECL_INTERFACE_KNOWN (current_function_decl))
7681 TREE_PUBLIC (decl) = 1;
7682 DECL_EXTERNAL (decl) = DECL_EXTERNAL (current_function_decl);
7684 else if (DECL_INITIAL (decl) == NULL_TREE
7685 || DECL_INITIAL (decl) == error_mark_node)
7687 TREE_PUBLIC (decl) = 1;
7688 DECL_COMMON (decl) = 1;
7690 /* else we lose. We can only do this if we can use common,
7691 which we can't if it has been initialized. */
7693 if (TREE_PUBLIC (decl))
7694 DECL_ASSEMBLER_NAME (decl)
7695 = build_static_name (current_function_decl, DECL_NAME (decl));
7696 else if (! DECL_ARTIFICIAL (decl))
7698 cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl);
7699 cp_warning_at (" you can work around this by removing the initializer"), decl;
7704 else if (TREE_CODE (decl) == VAR_DECL
7705 && DECL_LANG_SPECIFIC (decl)
7706 && DECL_COMDAT (decl))
7708 /* Dynamically initialized vars go into common. */
7709 if (DECL_INITIAL (decl) == NULL_TREE
7710 || DECL_INITIAL (decl) == error_mark_node)
7711 DECL_COMMON (decl) = 1;
7712 else if (EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
7714 DECL_COMMON (decl) = 1;
7715 DECL_INITIAL (decl) = error_mark_node;
7719 /* Statically initialized vars are weak or comdat, if
7722 make_decl_one_only (decl);
7725 /* We can't do anything useful; leave vars for explicit
7727 DECL_EXTERNAL (decl) = 1;
7728 DECL_NOT_REALLY_EXTERN (decl) = 0;
7733 if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl))
7734 make_decl_rtl (decl, NULL_PTR, toplev);
7735 else if (TREE_CODE (decl) == VAR_DECL
7736 && TREE_READONLY (decl)
7737 && DECL_INITIAL (decl) != NULL_TREE
7738 && DECL_INITIAL (decl) != error_mark_node
7739 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
7741 DECL_INITIAL (decl) = save_expr (DECL_INITIAL (decl));
7744 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
7747 && TREE_STATIC (decl)
7748 && ! TREE_SIDE_EFFECTS (decl)
7749 && ! TREE_PUBLIC (decl)
7750 && ! DECL_EXTERNAL (decl)
7751 && ! TYPE_NEEDS_DESTRUCTOR (type)
7752 && DECL_MODE (decl) != BLKmode)
7754 /* If this variable is really a constant, then fill its DECL_RTL
7755 slot with something which won't take up storage.
7756 If something later should take its address, we can always give
7757 it legitimate RTL at that time. */
7758 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
7759 store_expr (DECL_INITIAL (decl), DECL_RTL (decl), 0);
7760 TREE_ASM_WRITTEN (decl) = 1;
7762 else if (toplev && ! TREE_PUBLIC (decl))
7764 /* If this is a static const, change its apparent linkage
7765 if it belongs to a #pragma interface. */
7766 if (!interface_unknown)
7768 TREE_PUBLIC (decl) = 1;
7769 DECL_EXTERNAL (decl) = interface_only;
7771 make_decl_rtl (decl, asmspec, toplev);
7774 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
7776 else if (TREE_CODE (decl) == VAR_DECL
7777 && DECL_LANG_SPECIFIC (decl)
7778 && DECL_IN_AGGR_P (decl))
7780 if (TREE_STATIC (decl))
7782 if (init == NULL_TREE
7783 #ifdef DEFAULT_STATIC_DEFS
7784 /* If this code is dead, then users must
7785 explicitly declare static member variables
7786 outside the class def'n as well. */
7787 && TYPE_NEEDS_CONSTRUCTING (type)
7791 DECL_EXTERNAL (decl) = 1;
7792 make_decl_rtl (decl, asmspec, 1);
7795 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
7798 /* Just a constant field. Should not need any rtl. */
7802 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
7805 resume_temporary_allocation ();
7807 if (type != error_mark_node
7808 && TYPE_LANG_SPECIFIC (type)
7809 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
7810 abstract_virtuals_error (decl, type);
7811 else if ((TREE_CODE (type) == FUNCTION_TYPE
7812 || TREE_CODE (type) == METHOD_TYPE)
7813 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
7814 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type)))
7815 abstract_virtuals_error (decl, TREE_TYPE (type));
7817 if (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE (type))
7818 signature_error (decl, type);
7819 else if ((TREE_CODE (type) == FUNCTION_TYPE
7820 || TREE_CODE (type) == METHOD_TYPE)
7821 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
7822 && IS_SIGNATURE (TREE_TYPE (type)))
7823 signature_error (decl, TREE_TYPE (type));
7825 if (TREE_CODE (decl) == FUNCTION_DECL)
7827 else if (DECL_EXTERNAL (decl)
7828 && ! (DECL_LANG_SPECIFIC (decl)
7829 && DECL_NOT_REALLY_EXTERN (decl)))
7832 DECL_INITIAL (decl) = init;
7834 else if (TREE_STATIC (decl) && type != error_mark_node)
7836 /* Cleanups for static variables are handled by `finish_file'. */
7837 if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE
7838 || TYPE_NEEDS_DESTRUCTOR (type))
7839 expand_static_init (decl, init);
7843 /* This is a declared decl which must live until the
7844 end of the binding contour. It may need a cleanup. */
7846 /* Recompute the RTL of a local array now
7847 if it used to be an incomplete type. */
7848 if (was_incomplete && ! TREE_STATIC (decl))
7850 /* If we used it already as memory, it must stay in memory. */
7851 TREE_ADDRESSABLE (decl) = TREE_USED (decl);
7852 /* If it's still incomplete now, no init will save it. */
7853 if (DECL_SIZE (decl) == NULL_TREE)
7854 DECL_INITIAL (decl) = NULL_TREE;
7857 else if (! TREE_ASM_WRITTEN (decl)
7858 && (TYPE_SIZE (type) != NULL_TREE
7859 || TREE_CODE (type) == ARRAY_TYPE))
7861 /* Do this here, because we did not expand this decl's
7862 rtl in start_decl. */
7863 if (DECL_RTL (decl) == NULL_RTX)
7867 /* XXX: Why don't we use decl here? */
7868 /* Ans: Because it was already expanded? */
7869 if (! expand_decl_cleanup (NULL_TREE, cleanup))
7870 cp_error ("parser lost in parsing declaration of `%D'",
7872 /* Cleanup used up here. */
7873 cleanup = NULL_TREE;
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
7883 the outer level, either because it was directly declared,
7884 or because a dead for-decl got preserved. In either case,
7885 the code would not have been valid under the ARM
7886 scope rules, so clear is_for_scope for the
7887 current_binding_level.
7889 Otherwise, we need to preserve the temp slot for decl
7890 to last into the outer binding level. */
7893 = TREE_CHAIN (IDENTIFIER_BINDING (DECL_NAME (decl)));
7895 if (outer_binding && BINDING_LEVEL (outer_binding) == outer
7896 && (TREE_CODE (BINDING_VALUE (outer_binding))
7898 && DECL_DEAD_FOR_LOCAL (BINDING_VALUE (outer_binding)))
7900 BINDING_VALUE (outer_binding)
7901 = DECL_SHADOWED_FOR_VAR (BINDING_VALUE (outer_binding));
7902 current_binding_level->is_for_scope = 0;
7904 else if (DECL_IN_MEMORY_P (decl))
7905 preserve_temp_slots (DECL_RTL (decl));
7908 expand_start_target_temps ();
7910 if (DECL_SIZE (decl) && type != error_mark_node)
7912 /* Compute and store the initial value. */
7913 expand_decl_init (decl);
7914 already_used = TREE_USED (decl) || TREE_USED (type);
7916 if (init || TYPE_NEEDS_CONSTRUCTING (type))
7918 emit_line_note (DECL_SOURCE_FILE (decl),
7919 DECL_SOURCE_LINE (decl));
7920 expand_aggr_init (decl, init, flags);
7923 /* Set this to 0 so we can tell whether an aggregate which
7924 was initialized was ever used. Don't do this if it has a
7925 destructor, so we don't complain about the 'resource
7926 allocation is initialization' idiom. */
7927 /* Now set attribute((unused)) on types so decls of
7928 that type will be marked used. (see TREE_USED, above.)
7929 This avoids the warning problems this particular code
7930 tried to work around. */
7932 if (TYPE_NEEDS_CONSTRUCTING (type)
7934 && cleanup == NULL_TREE
7935 && DECL_NAME (decl))
7936 TREE_USED (decl) = 0;
7939 TREE_USED (decl) = 1;
7942 /* Cleanup any temporaries needed for the initial value. */
7943 expand_end_target_temps ();
7945 if (DECL_SIZE (decl) && type != error_mark_node)
7947 /* Store the cleanup, if there was one. */
7950 if (! expand_decl_cleanup (decl, cleanup))
7951 cp_error ("parser lost in parsing declaration of `%D'",
7958 /* Undo call to `pushclass' that was done in `start_decl'
7959 due to initialization of qualified member variable.
7960 I.e., Foo::x = 10; */
7962 tree context = DECL_REAL_CONTEXT (decl);
7964 && TREE_CODE_CLASS (TREE_CODE (context)) == 't'
7965 && (TREE_CODE (decl) == VAR_DECL
7966 /* We also have a pushclass done that we need to undo here
7967 if we're at top level and declare a method. */
7968 || TREE_CODE (decl) == FUNCTION_DECL)
7969 /* If size hasn't been set, we're still defining it,
7970 and therefore inside the class body; don't pop
7971 the binding level.. */
7972 && TYPE_SIZE (context) != NULL_TREE
7973 && context == current_class_type)
7980 /* If requested, warn about definitions of large data objects. */
7982 if (warn_larger_than
7983 && ! processing_template_decl
7984 && (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL)
7985 && !DECL_EXTERNAL (decl))
7987 register tree decl_size = DECL_SIZE (decl);
7989 if (decl_size && TREE_CODE (decl_size) == INTEGER_CST)
7991 unsigned units = TREE_INT_CST_LOW (decl_size) / BITS_PER_UNIT;
7993 if (units > larger_than_size)
7994 warning_with_decl (decl, "size of `%s' is %u bytes", units);
8000 /* Resume permanent allocation, if not within a function. */
8001 /* The corresponding push_obstacks_nochange is in start_decl,
8002 start_method, groktypename, and in grokfield. */
8007 TREE_READONLY (decl) = 1;
8010 /* This is here for a midend callback from c-common.c */
8013 finish_decl (decl, init, asmspec_tree)
8017 cp_finish_decl (decl, init, asmspec_tree, 1, 0);
8021 expand_static_init (decl, init)
8025 tree oldstatic = value_member (decl, static_aggregates);
8029 if (TREE_PURPOSE (oldstatic) && init != NULL_TREE)
8030 cp_error ("multiple initializations given for `%D'", decl);
8032 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
8034 /* Emit code to perform this initialization but once. */
8037 /* Remember this information until end of file. */
8038 push_obstacks (&permanent_obstack, &permanent_obstack);
8040 /* Emit code to perform this initialization but once. This code
8043 static int temp = 0;
8045 // Do initialization.
8047 // Register variable for destruction at end of program.
8050 Note that the `temp' variable is only set to 1 *after* the
8051 initialization is complete. This ensures that an exception,
8052 thrown during the construction, will cause the variable to
8053 reinitialized when we pass through this code again, as per:
8057 If the initialization exits by throwing an exception, the
8058 initialization is not complete, so it will be tried again
8059 the next time control enters the declaration.
8061 In theory, this process should be thread-safe, too; multiple
8062 threads should not be able to initialize the variable more
8063 than once. We don't yet attempt to ensure thread-safety. */
8064 temp = get_temp_name (integer_type_node, 1);
8065 rest_of_decl_compilation (temp, NULL_PTR, 0, 0);
8067 /* Begin the conditional initialization. */
8068 expand_start_cond (build_binary_op (EQ_EXPR, temp,
8069 integer_zero_node, 1), 0);
8070 expand_start_target_temps ();
8072 /* Do the initialization itself. */
8073 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))
8074 || (init && TREE_CODE (init) == TREE_LIST))
8076 expand_aggr_init (decl, init, 0);
8077 do_pending_stack_adjust ();
8080 expand_assignment (decl, init, 0, 0);
8082 /* Set TEMP to 1. */
8083 expand_assignment (temp, integer_one_node, 0, 0);
8085 /* Cleanup any temporaries needed for the initial value. If
8086 destroying one of the temporaries causes an exception to be
8087 thrown, then the object itself has still been fully
8089 expand_end_target_temps ();
8091 /* Use atexit to register a function for destroying this static
8093 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
8095 tree cleanup, fcall;
8096 static tree Atexit = 0;
8099 tree atexit_fndecl, PFV, pfvlist;
8100 /* Remember this information until end of file. */
8101 push_obstacks (&permanent_obstack, &permanent_obstack);
8102 PFV = build_pointer_type (build_function_type
8103 (void_type_node, void_list_node));
8105 pfvlist = tree_cons (NULL_TREE, PFV, void_list_node);
8107 push_lang_context (lang_name_c);
8109 = builtin_function ("atexit",
8110 build_function_type (void_type_node,
8112 NOT_BUILT_IN, NULL_PTR);
8113 assemble_external (atexit_fndecl);
8114 Atexit = default_conversion (atexit_fndecl);
8115 pop_lang_context ();
8119 /* Call build_cleanup before we enter the anonymous function
8120 so that any access checks will be done relative to the
8121 current scope, rather than the scope of the anonymous
8123 fcall = build_cleanup (decl);
8124 cleanup = start_anon_func ();
8125 expand_expr_stmt (fcall);
8127 mark_addressable (cleanup);
8128 cleanup = build_unary_op (ADDR_EXPR, cleanup, 0);
8129 fcall = build_function_call (Atexit, expr_tree_cons (NULL_TREE, cleanup, NULL_TREE));
8130 expand_expr_stmt (fcall);
8134 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
8136 static_aggregates = perm_tree_cons (temp, decl, static_aggregates);
8137 TREE_STATIC (static_aggregates) = 1;
8140 /* Resume old (possibly temporary) allocation. */
8145 /* This code takes into account memory allocation
8146 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
8147 does not hold for this object, then we must make permanent
8148 the storage currently in the temporary obstack. */
8149 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))
8150 preserve_initializer ();
8151 static_aggregates = perm_tree_cons (init, decl, static_aggregates);
8155 /* Make TYPE a complete type based on INITIAL_VALUE.
8156 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
8157 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
8160 complete_array_type (type, initial_value, do_default)
8161 tree type, initial_value;
8164 register tree maxindex = NULL_TREE;
8169 /* Note MAXINDEX is really the maximum index,
8170 one less than the size. */
8171 if (TREE_CODE (initial_value) == STRING_CST)
8174 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
8175 maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
8178 else if (TREE_CODE (initial_value) == CONSTRUCTOR)
8180 tree elts = CONSTRUCTOR_ELTS (initial_value);
8181 maxindex = size_binop (MINUS_EXPR, integer_zero_node, size_one_node);
8182 for (; elts; elts = TREE_CHAIN (elts))
8184 if (TREE_PURPOSE (elts))
8185 maxindex = TREE_PURPOSE (elts);
8187 maxindex = size_binop (PLUS_EXPR, maxindex, size_one_node);
8189 maxindex = copy_node (maxindex);
8193 /* Make an error message unless that happened already. */
8194 if (initial_value != error_mark_node)
8197 /* Prevent further error messages. */
8198 maxindex = build_int_2 (0, 0);
8205 maxindex = build_int_2 (0, 0);
8213 TYPE_DOMAIN (type) = build_index_type (maxindex);
8214 if (! TREE_TYPE (maxindex))
8215 TREE_TYPE (maxindex) = TYPE_DOMAIN (type);
8217 itype = TREE_TYPE (initial_value);
8220 if (itype && !TYPE_DOMAIN (itype))
8221 TYPE_DOMAIN (itype) = TYPE_DOMAIN (type);
8222 /* The type of the main variant should never be used for arrays
8223 of different sizes. It should only ever be completed with the
8224 size of the array. */
8225 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)))
8226 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = TYPE_DOMAIN (type);
8229 /* Lay out the type now that we can get the real answer. */
8236 /* Return zero if something is declared to be a member of type
8237 CTYPE when in the context of CUR_TYPE. STRING is the error
8238 message to print in that case. Otherwise, quietly return 1. */
8241 member_function_or_else (ctype, cur_type, string)
8242 tree ctype, cur_type;
8245 if (ctype && ctype != cur_type)
8247 error (string, TYPE_NAME_STRING (ctype));
8253 /* Subroutine of `grokdeclarator'. */
8255 /* Generate errors possibly applicable for a given set of specifiers.
8256 This is for ARM $7.1.2. */
8259 bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises)
8262 int virtualp, quals, friendp, raises, inlinep;
8265 cp_error ("`%D' declared as a `virtual' %s", object, type);
8267 cp_error ("`%D' declared as an `inline' %s", object, type);
8269 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
8272 cp_error_at ("invalid friend declaration", object);
8274 cp_error_at ("invalid exception specifications", object);
8277 /* CTYPE is class type, or null if non-class.
8278 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
8280 DECLARATOR is the function's name.
8281 VIRTUALP is truthvalue of whether the function is virtual or not.
8282 FLAGS are to be passed through to `grokclassfn'.
8283 QUALS are qualifiers indicating whether the function is `const'
8285 RAISES is a list of exceptions that this function can raise.
8286 CHECK is 1 if we must find this method in CTYPE, 0 if we should
8287 not look, and -1 if we should not call `grokclassfn' at all.
8289 Returns `error_mark_node' if something goes wrong, after issuing
8290 applicable error messages. */
8293 grokfndecl (ctype, type, declarator, orig_declarator, virtualp, flags, quals,
8294 raises, attrlist, check, friendp, publicp, inlinep, funcdef_flag,
8295 template_count, in_namespace)
8298 tree orig_declarator;
8300 enum overload_flags flags;
8301 tree quals, raises, attrlist;
8302 int check, friendp, publicp, inlinep, funcdef_flag, template_count;
8306 int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
8310 cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL
8311 ? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype);
8317 type = build_exception_variant (type, raises);
8320 decl = build_lang_decl (FUNCTION_DECL, declarator, type);
8321 /* Propagate volatile out from type to decl. */
8322 if (TYPE_VOLATILE (type))
8323 TREE_THIS_VOLATILE (decl) = 1;
8325 /* If this decl has namespace scope, set that up. */
8327 set_decl_namespace (decl, in_namespace);
8328 else if (publicp && ! ctype)
8329 DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
8331 /* `main' and builtins have implicit 'C' linkage. */
8332 if ((MAIN_NAME_P (declarator)
8333 || (IDENTIFIER_LENGTH (declarator) > 10
8334 && IDENTIFIER_POINTER (declarator)[0] == '_'
8335 && IDENTIFIER_POINTER (declarator)[1] == '_'
8336 && strncmp (IDENTIFIER_POINTER (declarator)+2, "builtin_", 8) == 0))
8337 && current_lang_name == lang_name_cplusplus
8338 && ctype == NULL_TREE
8339 /* NULL_TREE means global namespace. */
8340 && DECL_CONTEXT (decl) == NULL_TREE)
8341 DECL_LANGUAGE (decl) = lang_c;
8343 /* Should probably propagate const out from type to decl I bet (mrs). */
8346 DECL_STATIC_FUNCTION_P (decl) = 1;
8347 DECL_CONTEXT (decl) = ctype;
8351 DECL_CLASS_CONTEXT (decl) = ctype;
8353 if (ctype == NULL_TREE && DECL_MAIN_P (decl))
8355 if (processing_template_decl)
8356 error ("cannot declare `main' to be a template");
8358 error ("cannot declare `main' to be inline");
8360 error ("cannot declare `main' to be static");
8365 /* Members of anonymous types and local classes have no linkage; make
8367 if (ctype && (ANON_AGGRNAME_P (TYPE_IDENTIFIER (ctype))
8368 || hack_decl_function_context (TYPE_MAIN_DECL (ctype))))
8373 /* [basic.link]: A name with no linkage (notably, the name of a class
8374 or enumeration declared in a local scope) shall not be used to
8375 declare an entity with linkage.
8377 Only check this for public decls for now. */
8378 t = no_linkage_check (TREE_TYPE (decl));
8381 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
8383 if (DECL_LANGUAGE (decl) == lang_c)
8384 /* Allow this; it's pretty common in C. */;
8386 cp_pedwarn ("non-local function `%#D' uses anonymous type",
8390 cp_pedwarn ("non-local function `%#D' uses local type `%T'",
8395 TREE_PUBLIC (decl) = publicp;
8398 DECL_INTERFACE_KNOWN (decl) = 1;
8399 DECL_NOT_REALLY_EXTERN (decl) = 1;
8403 DECL_THIS_INLINE (decl) = DECL_INLINE (decl) = 1;
8405 DECL_EXTERNAL (decl) = 1;
8406 if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE)
8408 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
8409 (ctype ? "static " : "non-"), decl, TREE_VALUE (quals));
8413 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl)))
8414 grok_op_properties (decl, virtualp, check < 0);
8416 if (ctype && hack_decl_function_context (decl))
8417 DECL_NO_STATIC_CHAIN (decl) = 1;
8419 for (t = TYPE_ARG_TYPES (TREE_TYPE (decl)); t; t = TREE_CHAIN (t))
8420 if (TREE_PURPOSE (t)
8421 && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
8423 add_defarg_fn (decl);
8428 && TREE_CODE (orig_declarator) == TEMPLATE_ID_EXPR)
8432 ("defining explicit specialization `%D' in friend declaration",
8436 if (PROCESSING_REAL_TEMPLATE_DECL_P ())
8438 /* Something like `template <class T> friend void f<T>()'. */
8439 cp_error ("template-id `%D' in declaration of primary template",
8441 return error_mark_node;
8444 /* A friend declaration of the form friend void f<>(). Record
8445 the information in the TEMPLATE_ID_EXPR. */
8446 SET_DECL_IMPLICIT_INSTANTIATION (decl);
8447 DECL_TEMPLATE_INFO (decl)
8448 = perm_tree_cons (TREE_OPERAND (orig_declarator, 0),
8449 TREE_OPERAND (orig_declarator, 1),
8454 /* Plain overloading: will not be grok'd by grokclassfn. */
8455 if (! ctype && ! processing_template_decl
8456 && DECL_LANGUAGE (decl) != lang_c
8457 && (! DECL_USE_TEMPLATE (decl) || name_mangling_version < 1))
8458 set_mangled_name_for_decl (decl);
8461 /* Make the init_value nonzero so pushdecl knows this is not
8462 tentative. error_mark_node is replaced later with the BLOCK. */
8463 DECL_INITIAL (decl) = error_mark_node;
8465 /* Caller will do the rest of this. */
8469 if (check && funcdef_flag)
8470 DECL_INITIAL (decl) = error_mark_node;
8472 if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator)
8475 /* Just handle constructors here. We could do this
8476 inside the following if stmt, but I think
8477 that the code is more legible by breaking this
8478 case out. See comments below for what each of
8479 the following calls is supposed to do. */
8480 DECL_CONSTRUCTOR_P (decl) = 1;
8482 grokclassfn (ctype, decl, flags, quals);
8484 decl = check_explicit_specialization (orig_declarator, decl,
8486 2 * (funcdef_flag != 0) +
8487 4 * (friendp != 0));
8488 if (decl == error_mark_node)
8489 return error_mark_node;
8491 if ((! TYPE_FOR_JAVA (ctype) || check_java_method (decl))
8494 tmp = check_classfn (ctype, decl);
8496 if (tmp && TREE_CODE (tmp) == TEMPLATE_DECL)
8497 tmp = DECL_TEMPLATE_RESULT(tmp);
8499 if (tmp && DECL_ARTIFICIAL (tmp))
8500 cp_error ("definition of implicitly-declared `%D'", tmp);
8501 if (tmp && duplicate_decls (decl, tmp))
8504 if (! grok_ctor_properties (ctype, decl))
8505 return error_mark_node;
8511 /* Function gets the ugly name, field gets the nice one.
8512 This call may change the type of the function (because
8513 of default parameters)! */
8514 if (ctype != NULL_TREE)
8515 grokclassfn (ctype, decl, flags, quals);
8517 decl = check_explicit_specialization (orig_declarator, decl,
8519 2 * (funcdef_flag != 0) +
8520 4 * (friendp != 0));
8521 if (decl == error_mark_node)
8522 return error_mark_node;
8524 if (ctype != NULL_TREE
8525 && (! TYPE_FOR_JAVA (ctype) || check_java_method (decl))
8528 tmp = check_classfn (ctype, decl);
8530 if (tmp && TREE_CODE (tmp) == TEMPLATE_DECL)
8531 tmp = DECL_TEMPLATE_RESULT (tmp);
8533 if (tmp && DECL_STATIC_FUNCTION_P (tmp)
8534 && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
8536 /* Remove the `this' parm added by grokclassfn.
8537 XXX Isn't this done in start_function, too? */
8538 revert_static_member_fn (&decl, NULL, NULL);
8539 last_function_parms = TREE_CHAIN (last_function_parms);
8541 if (tmp && DECL_ARTIFICIAL (tmp))
8542 cp_error ("definition of implicitly-declared `%D'", tmp);
8545 if (!duplicate_decls (decl, tmp))
8546 my_friendly_abort (892);
8551 if (ctype == NULL_TREE || check)
8555 cplus_decl_attributes (decl, TREE_PURPOSE (attrlist),
8556 TREE_VALUE (attrlist));
8557 make_decl_rtl (decl, NULL_PTR, 1);
8561 DECL_VIRTUAL_P (decl) = 1;
8562 if (DECL_VINDEX (decl) == NULL_TREE)
8563 DECL_VINDEX (decl) = error_mark_node;
8564 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl)) = 1;
8571 grokvardecl (type, declarator, specbits_in, initialized, constp, in_namespace)
8574 RID_BIT_TYPE *specbits_in;
8580 RID_BIT_TYPE specbits;
8582 specbits = *specbits_in;
8584 if (TREE_CODE (type) == OFFSET_TYPE)
8586 /* If you declare a static member so that it
8587 can be initialized, the code will reach here. */
8588 tree basetype = TYPE_OFFSET_BASETYPE (type);
8589 type = TREE_TYPE (type);
8590 decl = build_lang_field_decl (VAR_DECL, declarator, type);
8591 DECL_CONTEXT (decl) = basetype;
8592 DECL_CLASS_CONTEXT (decl) = basetype;
8593 DECL_ASSEMBLER_NAME (decl) = build_static_name (basetype, declarator);
8600 context = in_namespace;
8601 else if (namespace_bindings_p () || RIDBIT_SETP (RID_EXTERN, specbits))
8602 context = current_namespace;
8604 context = NULL_TREE;
8606 decl = build_decl (VAR_DECL, declarator, complete_type (type));
8609 set_decl_namespace (decl, context);
8611 context = DECL_CONTEXT (decl);
8612 if (declarator && context && current_lang_name != lang_name_c)
8613 DECL_ASSEMBLER_NAME (decl) = build_static_name (context, declarator);
8617 set_decl_namespace (decl, in_namespace);
8619 if (RIDBIT_SETP (RID_EXTERN, specbits))
8621 DECL_THIS_EXTERN (decl) = 1;
8622 DECL_EXTERNAL (decl) = !initialized;
8625 /* In class context, static means one per class,
8626 public access, and static storage. */
8627 if (DECL_CLASS_SCOPE_P (decl))
8629 TREE_PUBLIC (decl) = 1;
8630 TREE_STATIC (decl) = 1;
8631 DECL_EXTERNAL (decl) = 0;
8633 /* At top level, either `static' or no s.c. makes a definition
8634 (perhaps tentative), and absence of `static' makes it public. */
8635 else if (toplevel_bindings_p ())
8637 TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits)
8638 && (DECL_THIS_EXTERN (decl) || ! constp));
8639 TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
8641 /* Not at top level, only `static' makes a static definition. */
8644 TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits);
8645 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
8648 if (TREE_PUBLIC (decl))
8650 /* [basic.link]: A name with no linkage (notably, the name of a class
8651 or enumeration declared in a local scope) shall not be used to
8652 declare an entity with linkage.
8654 Only check this for public decls for now. */
8655 tree t = no_linkage_check (TREE_TYPE (decl));
8658 if (ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))
8659 /* Ignore for now; `enum { foo } e' is pretty common. */;
8661 cp_pedwarn ("non-local variable `%#D' uses local type `%T'",
8669 /* Create and return a canonical pointer to member function type, for
8670 TYPE, which is a POINTER_TYPE to a METHOD_TYPE. */
8673 build_ptrmemfunc_type (type)
8680 /* If a canonical type already exists for this type, use it. We use
8681 this method instead of type_hash_canon, because it only does a
8682 simple equality check on the list of field members. */
8684 if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
8687 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
8689 u = make_lang_type (UNION_TYPE);
8690 SET_IS_AGGR_TYPE (u, 0);
8691 fields[0] = build_lang_field_decl (FIELD_DECL, pfn_identifier, type);
8692 fields[1] = build_lang_field_decl (FIELD_DECL, delta2_identifier,
8694 finish_builtin_type (u, "__ptrmemfunc_type", fields, 1, ptr_type_node);
8695 TYPE_NAME (u) = NULL_TREE;
8697 t = make_lang_type (RECORD_TYPE);
8699 /* Let the front-end know this is a pointer to member function... */
8700 TYPE_PTRMEMFUNC_FLAG (t) = 1;
8701 /* ... and not really an aggregate. */
8702 SET_IS_AGGR_TYPE (t, 0);
8704 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
8706 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
8708 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_or_delta2_identifier, u);
8709 finish_builtin_type (t, "__ptrmemfunc_type", fields, 2, ptr_type_node);
8713 /* Zap out the name so that the back-end will give us the debugging
8714 information for this anonymous RECORD_TYPE. */
8715 TYPE_NAME (t) = NULL_TREE;
8717 TYPE_SET_PTRMEMFUNC_TYPE (type, t);
8719 /* Seems to be wanted. */
8720 CLASSTYPE_GOT_SEMICOLON (t) = 1;
8724 /* Given declspecs and a declarator,
8725 determine the name and type of the object declared
8726 and construct a ..._DECL node for it.
8727 (In one case we can return a ..._TYPE node instead.
8728 For invalid input we sometimes return 0.)
8730 DECLSPECS is a chain of tree_list nodes whose value fields
8731 are the storage classes and type specifiers.
8733 DECL_CONTEXT says which syntactic context this declaration is in:
8734 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
8735 FUNCDEF for a function definition. Like NORMAL but a few different
8736 error messages in each case. Return value may be zero meaning
8737 this definition is too screwy to try to parse.
8738 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
8739 handle member functions (which have FIELD context).
8740 Return value may be zero meaning this definition is too screwy to
8742 PARM for a parameter declaration (either within a function prototype
8743 or before a function body). Make a PARM_DECL, or return void_type_node.
8744 CATCHPARM for a parameter declaration before a catch clause.
8745 TYPENAME if for a typename (in a cast or sizeof).
8746 Don't make a DECL node; just return the ..._TYPE node.
8747 FIELD for a struct or union field; make a FIELD_DECL.
8748 BITFIELD for a field with specified width.
8749 INITIALIZED is 1 if the decl has an initializer.
8751 In the TYPENAME case, DECLARATOR is really an absolute declarator.
8752 It may also be so in the PARM case, for a prototype where the
8753 argument type is specified but not the name.
8755 This function is where the complicated C meanings of `static'
8756 and `extern' are interpreted.
8758 For C++, if there is any monkey business to do, the function which
8759 calls this one must do it, i.e., prepending instance variables,
8760 renaming overloaded function names, etc.
8762 Note that for this C++, it is an error to define a method within a class
8763 which does not belong to that class.
8765 Except in the case where SCOPE_REFs are implicitly known (such as
8766 methods within a class being redundantly qualified),
8767 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
8768 (class_name::decl_name). The caller must also deal with this.
8770 If a constructor or destructor is seen, and the context is FIELD,
8771 then the type gains the attribute TREE_HAS_x. If such a declaration
8772 is erroneous, NULL_TREE is returned.
8774 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
8775 function, these are the qualifiers to give to the `this' pointer.
8777 May return void_type_node if the declarator turned out to be a friend.
8778 See grokfield for details. */
8780 enum return_types { return_normal, return_ctor, return_dtor, return_conversion };
8782 /* DECL is a VAR_DECL defined in-class, whose TYPE is also given.
8783 Check to see that the definition is valid. Issue appropriate error
8784 messages. Return 1 if the definition is particularly bad, or 0
8788 check_static_variable_definition (decl, type)
8792 /* Motion 10 at San Diego: If a static const integral data member is
8793 initialized with an integral constant expression, the initializer
8794 may appear either in the declaration (within the class), or in
8795 the definition, but not both. If it appears in the class, the
8796 member is a member constant. The file-scope definition is always
8798 if (CLASS_TYPE_P (type) || TREE_CODE (type) == REFERENCE_TYPE)
8800 cp_error ("in-class initialization of static data member of non-integral type `%T'",
8802 /* If we just return the declaration, crashes will sometimes
8803 occur. We therefore return void_type_node, as if this was a
8804 friend declaration, to cause callers to completely ignore
8805 this declaration. */
8808 else if (!CP_TYPE_CONST_P (type))
8809 cp_error ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
8811 else if (pedantic && !INTEGRAL_TYPE_P (type))
8812 cp_pedwarn ("ANSI C++ forbids initialization of member constant `%D' of non-integral type `%T'", decl, type);
8818 grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
8821 enum decl_context decl_context;
8825 RID_BIT_TYPE specbits;
8828 tree type = NULL_TREE;
8834 int virtualp, explicitp, friendp, inlinep, staticp;
8835 int explicit_int = 0;
8836 int explicit_char = 0;
8837 int defaulted_int = 0;
8838 int opaque_typedef = 0;
8839 tree typedef_decl = NULL_TREE;
8841 tree typedef_type = NULL_TREE;
8842 int funcdef_flag = 0;
8843 enum tree_code innermost_code = ERROR_MARK;
8846 /* See the code below that used this. */
8847 tree decl_machine_attr = NULL_TREE;
8849 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
8850 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
8851 tree init = NULL_TREE;
8853 /* Keep track of what sort of function is being processed
8854 so that we can warn about default return values, or explicit
8855 return values which do not match prescribed defaults. */
8856 enum return_types return_type = return_normal;
8858 tree dname = NULL_TREE;
8859 tree ctype = current_class_type;
8860 tree ctor_return_type = NULL_TREE;
8861 enum overload_flags flags = NO_SPECIAL;
8862 tree quals = NULL_TREE;
8863 tree raises = NULL_TREE;
8864 int template_count = 0;
8865 tree in_namespace = NULL_TREE;
8869 RIDBIT_RESET_ALL (specbits);
8870 if (decl_context == FUNCDEF)
8871 funcdef_flag = 1, decl_context = NORMAL;
8872 else if (decl_context == MEMFUNCDEF)
8873 funcdef_flag = -1, decl_context = FIELD;
8874 else if (decl_context == BITFIELD)
8875 bitfield = 1, decl_context = FIELD;
8877 /* Look inside a declarator for the name being declared
8878 and get it as a string, for an error message. */
8880 tree *next = &declarator;
8884 while (next && *next)
8887 switch (TREE_CODE (decl))
8890 /* For attributes. */
8891 next = &TREE_VALUE (decl);
8896 next = &TREE_OPERAND (decl, 0);
8899 case BIT_NOT_EXPR: /* For C++ destructors! */
8901 tree name = TREE_OPERAND (decl, 0);
8902 tree rename = NULL_TREE;
8904 my_friendly_assert (flags == NO_SPECIAL, 152);
8906 return_type = return_dtor;
8907 if (TREE_CODE (name) == TYPE_DECL)
8908 TREE_OPERAND (decl, 0) = name = constructor_name (name);
8909 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153);
8910 if (ctype == NULL_TREE)
8912 if (current_class_type == NULL_TREE)
8914 error ("destructors must be member functions");
8919 tree t = constructor_name (current_class_name);
8926 tree t = constructor_name (ctype);
8933 cp_error ("destructor `%T' must match class name `%T'",
8935 TREE_OPERAND (decl, 0) = rename;
8941 case ADDR_EXPR: /* C++ reference declaration */
8946 innermost_code = TREE_CODE (decl);
8947 next = &TREE_OPERAND (decl, 0);
8951 if (parmlist_is_exprlist (TREE_OPERAND (decl, 1)))
8953 /* This is actually a variable declaration using constructor
8954 syntax. We need to call start_decl and cp_finish_decl so we
8955 can get the variable initialized... */
8957 *next = TREE_OPERAND (decl, 0);
8958 init = TREE_OPERAND (decl, 1);
8960 decl = start_decl (declarator, declspecs, 1, NULL_TREE, NULL_TREE);
8963 /* Look for __unused__ attribute */
8964 if (TREE_USED (TREE_TYPE (decl)))
8965 TREE_USED (decl) = 1;
8966 finish_decl (decl, init, NULL_TREE);
8969 cp_error ("invalid declarator");
8972 innermost_code = TREE_CODE (decl);
8973 if (decl_context == FIELD && ctype == NULL_TREE)
8974 ctype = current_class_type;
8976 && TREE_OPERAND (decl, 0)
8977 && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL
8978 && ((DECL_NAME (TREE_OPERAND (decl, 0))
8979 == constructor_name_full (ctype))
8980 || (DECL_NAME (TREE_OPERAND (decl, 0))
8981 == constructor_name (ctype)))))
8982 TREE_OPERAND (decl, 0) = constructor_name (ctype);
8983 next = &TREE_OPERAND (decl, 0);
8985 if (ctype != NULL_TREE
8986 && decl != NULL_TREE && flags != DTOR_FLAG
8987 && decl == constructor_name (ctype))
8989 return_type = return_ctor;
8990 ctor_return_type = ctype;
8995 case TEMPLATE_ID_EXPR:
8997 tree fns = TREE_OPERAND (decl, 0);
8999 if (TREE_CODE (fns) == LOOKUP_EXPR)
9000 fns = TREE_OPERAND (fns, 0);
9002 if (TREE_CODE (fns) == IDENTIFIER_NODE)
9004 else if (is_overloaded_fn (fns))
9005 dname = DECL_NAME (get_first_fn (fns));
9007 my_friendly_abort (0);
9011 case IDENTIFIER_NODE:
9012 if (TREE_CODE (decl) == IDENTIFIER_NODE)
9019 cp_error ("declarator-id missing; using reserved word `%D'",
9021 name = IDENTIFIER_POINTER (dname);
9023 if (! IDENTIFIER_OPNAME_P (dname)
9024 /* GNU/Linux headers use '__op'. Arrgh. */
9025 || (IDENTIFIER_TYPENAME_P (dname) && ! TREE_TYPE (dname)))
9026 name = IDENTIFIER_POINTER (dname);
9029 if (IDENTIFIER_TYPENAME_P (dname))
9031 my_friendly_assert (flags == NO_SPECIAL, 154);
9032 flags = TYPENAME_FLAG;
9033 ctor_return_type = TREE_TYPE (dname);
9034 return_type = return_conversion;
9036 name = operator_name_string (dname);
9043 /* Perform error checking, and decide on a ctype. */
9044 tree cname = TREE_OPERAND (decl, 0);
9045 if (cname == NULL_TREE)
9047 else if (TREE_CODE (cname) == NAMESPACE_DECL)
9050 in_namespace = TREE_OPERAND (decl, 0);
9051 TREE_OPERAND (decl, 0) = NULL_TREE;
9053 else if (! is_aggr_type (cname, 1))
9054 TREE_OPERAND (decl, 0) = NULL_TREE;
9055 /* Must test TREE_OPERAND (decl, 1), in case user gives
9056 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
9057 else if (TREE_OPERAND (decl, 1)
9058 && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)
9060 else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM
9061 || TREE_CODE (cname) == TEMPLATE_TEMPLATE_PARM)
9063 cp_error ("`%T::%D' is not a valid declarator", cname,
9064 TREE_OPERAND (decl, 1));
9065 cp_error (" perhaps you want `typename %T::%D' to make it a type",
9066 cname, TREE_OPERAND (decl, 1));
9067 return void_type_node;
9069 else if (ctype == NULL_TREE)
9071 else if (TREE_COMPLEXITY (decl) == current_class_depth)
9072 TREE_OPERAND (decl, 0) = ctype;
9075 if (! UNIQUELY_DERIVED_FROM_P (cname, ctype))
9077 cp_error ("type `%T' is not derived from type `%T'",
9079 TREE_OPERAND (decl, 0) = NULL_TREE;
9085 if (ctype && TREE_CODE (TREE_OPERAND (decl, 1)) == TYPE_DECL
9086 && ((DECL_NAME (TREE_OPERAND (decl, 1))
9087 == constructor_name_full (ctype))
9088 || (DECL_NAME (TREE_OPERAND (decl, 1))
9089 == constructor_name (ctype))))
9090 TREE_OPERAND (decl, 1) = constructor_name (ctype);
9091 next = &TREE_OPERAND (decl, 1);
9095 if (TREE_CODE (decl) == IDENTIFIER_NODE
9096 && constructor_name (ctype) == decl)
9098 return_type = return_ctor;
9099 ctor_return_type = ctype;
9101 else if (TREE_CODE (decl) == BIT_NOT_EXPR
9102 && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE
9103 && (constructor_name (ctype) == TREE_OPERAND (decl, 0)
9104 || constructor_name_full (ctype) == TREE_OPERAND (decl, 0)))
9106 return_type = return_dtor;
9107 ctor_return_type = ctype;
9109 TREE_OPERAND (decl, 0) = constructor_name (ctype);
9110 next = &TREE_OPERAND (decl, 0);
9121 /* Parse error puts this typespec where
9122 a declarator should go. */
9123 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl));
9124 if (TREE_TYPE (decl) == current_class_type)
9125 cp_error (" perhaps you want `%T' for a constructor",
9126 current_class_name);
9127 dname = DECL_NAME (decl);
9128 name = IDENTIFIER_POINTER (dname);
9130 /* Avoid giving two errors for this. */
9131 IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE;
9133 declspecs = temp_tree_cons (NULL_TREE, integer_type_node,
9140 cp_compiler_error ("`%D' as declarator", decl);
9141 return 0; /* We used to do a 155 abort here. */
9148 /* A function definition's declarator must have the form of
9149 a function declarator. */
9151 if (funcdef_flag && innermost_code != CALL_EXPR)
9154 if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
9155 && innermost_code != CALL_EXPR
9156 && ! (ctype && declspecs == NULL_TREE))
9158 cp_error ("declaration of `%D' as non-function", dname);
9159 return void_type_node;
9162 /* Anything declared one level down from the top level
9163 must be one of the parameters of a function
9164 (because the body is at least two levels down). */
9166 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
9167 by not allowing C++ class definitions to specify their parameters
9168 with xdecls (must be spec.d in the parmlist).
9170 Since we now wait to push a class scope until we are sure that
9171 we are in a legitimate method context, we must set oldcname
9172 explicitly (since current_class_name is not yet alive).
9174 We also want to avoid calling this a PARM if it is in a namespace. */
9176 if (decl_context == NORMAL && ! namespace_bindings_p ()
9177 && ! pseudo_global_level_p ())
9179 struct binding_level *b = current_binding_level;
9180 current_binding_level = b->level_chain;
9181 if (current_binding_level != 0 && toplevel_bindings_p ())
9182 decl_context = PARM;
9183 current_binding_level = b;
9186 /* Look through the decl specs and record which ones appear.
9187 Some typespecs are defined as built-in typenames.
9188 Others, the ones that are modifiers of other types,
9189 are represented by bits in SPECBITS: set the bits for
9190 the modifiers that appear. Storage class keywords are also in SPECBITS.
9192 If there is a typedef name or a type, store the type in TYPE.
9193 This includes builtin typedefs such as `int'.
9195 Set EXPLICIT_INT if the type is `int' or `char' and did not
9196 come from a user typedef.
9198 Set LONGLONG if `long' is mentioned twice.
9200 For C++, constructors and destructors have their own fast treatment. */
9202 for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
9207 /* Certain parse errors slip through. For example,
9208 `int class;' is not caught by the parser. Try
9209 weakly to recover here. */
9210 if (TREE_CODE (spec) != TREE_LIST)
9213 id = TREE_VALUE (spec);
9215 if (TREE_CODE (id) == IDENTIFIER_NODE)
9217 if (id == ridpointers[(int) RID_INT]
9218 || id == ridpointers[(int) RID_CHAR]
9219 || id == ridpointers[(int) RID_BOOL]
9220 || id == ridpointers[(int) RID_WCHAR])
9224 if (id == ridpointers[(int) RID_BOOL])
9225 error ("`bool' is now a keyword");
9227 cp_error ("extraneous `%T' ignored", id);
9231 if (id == ridpointers[(int) RID_INT])
9233 else if (id == ridpointers[(int) RID_CHAR])
9235 type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id));
9239 /* C++ aggregate types. */
9240 if (IDENTIFIER_HAS_TYPE_VALUE (id))
9243 cp_error ("multiple declarations `%T' and `%T'", type, id);
9245 type = IDENTIFIER_TYPE_VALUE (id);
9249 for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++)
9251 if (ridpointers[i] == id)
9253 if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits))
9255 if (pedantic && ! in_system_header && warn_long_long)
9256 pedwarn ("ANSI C++ does not support `long long'");
9258 error ("`long long long' is too long for GCC");
9262 else if (RIDBIT_SETP (i, specbits))
9263 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id));
9264 RIDBIT_SET (i, specbits);
9269 /* C++ aggregate types. */
9270 else if (TREE_CODE (id) == TYPE_DECL || TREE_CODE (id) == TEMPLATE_DECL)
9273 cp_error ("multiple declarations `%T' and `%T'", type,
9277 type = TREE_TYPE (id);
9278 TREE_VALUE (spec) = type;
9283 error ("two or more data types in declaration of `%s'", name);
9284 else if (TREE_CODE (id) == IDENTIFIER_NODE)
9286 register tree t = lookup_name (id, 1);
9287 if (!t || TREE_CODE (t) != TYPE_DECL)
9288 error ("`%s' fails to be a typedef or built in type",
9289 IDENTIFIER_POINTER (id));
9292 type = TREE_TYPE (t);
9294 /* See the code below that used this. */
9295 decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id);
9300 else if (id != error_mark_node)
9301 /* Can't change CLASS nodes into RECORD nodes here! */
9307 typedef_type = type;
9309 /* No type at all: default to `int', and set DEFAULTED_INT
9310 because it was not a user-defined typedef.
9311 Except when we have a `typedef' inside a signature, in
9312 which case the type defaults to `unknown type' and is
9313 instantiated when assigning to a signature pointer or ref. */
9315 if (type == NULL_TREE
9316 && (RIDBIT_SETP (RID_SIGNED, specbits)
9317 || RIDBIT_SETP (RID_UNSIGNED, specbits)
9318 || RIDBIT_SETP (RID_LONG, specbits)
9319 || RIDBIT_SETP (RID_SHORT, specbits)))
9321 /* These imply 'int'. */
9322 type = integer_type_node;
9326 if (type == NULL_TREE)
9329 if (return_type == return_dtor)
9330 type = void_type_node;
9331 else if (return_type == return_ctor)
9332 type = build_pointer_type (ctor_return_type);
9333 else if (return_type == return_conversion)
9334 type = ctor_return_type;
9335 else if (current_class_type
9336 && IS_SIGNATURE (current_class_type)
9337 && RIDBIT_SETP (RID_TYPEDEF, specbits)
9338 && (decl_context == FIELD || decl_context == NORMAL))
9342 type = copy_node (opaque_type_node);
9346 if (! pedantic && ! warn_return_type
9348 && MAIN_NAME_P (dname)
9349 && ctype == NULL_TREE
9350 && in_namespace == NULL_TREE
9351 && current_namespace == global_namespace)
9352 /* Let `main () { }' slide, since it's so common. */;
9354 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type",
9356 type = integer_type_node;
9359 else if (return_type == return_dtor)
9361 error ("return type specification for destructor invalid");
9362 type = void_type_node;
9364 else if (return_type == return_ctor)
9366 error ("return type specification for constructor invalid");
9367 type = build_pointer_type (ctor_return_type);
9369 else if (return_type == return_conversion)
9371 if (!same_type_p (type, ctor_return_type))
9372 cp_error ("operator `%T' declared to return `%T'",
9373 ctor_return_type, type);
9375 cp_pedwarn ("return type specified for `operator %T'",
9378 type = ctor_return_type;
9383 /* Now process the modifiers that were specified
9384 and check for invalid combinations. */
9386 /* Long double is a special combination. */
9388 if (RIDBIT_SETP (RID_LONG, specbits)
9389 && TYPE_MAIN_VARIANT (type) == double_type_node)
9391 RIDBIT_RESET (RID_LONG, specbits);
9392 type = build_qualified_type (long_double_type_node,
9393 CP_TYPE_QUALS (type));
9396 /* Check all other uses of type modifiers. */
9398 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
9399 || RIDBIT_SETP (RID_SIGNED, specbits)
9400 || RIDBIT_SETP (RID_LONG, specbits)
9401 || RIDBIT_SETP (RID_SHORT, specbits))
9405 if (TREE_CODE (type) == REAL_TYPE)
9406 error ("short, signed or unsigned invalid for `%s'", name);
9407 else if (TREE_CODE (type) != INTEGER_TYPE)
9408 error ("long, short, signed or unsigned invalid for `%s'", name);
9409 else if (RIDBIT_SETP (RID_LONG, specbits)
9410 && RIDBIT_SETP (RID_SHORT, specbits))
9411 error ("long and short specified together for `%s'", name);
9412 else if ((RIDBIT_SETP (RID_LONG, specbits)
9413 || RIDBIT_SETP (RID_SHORT, specbits))
9415 error ("long or short specified with char for `%s'", name);
9416 else if ((RIDBIT_SETP (RID_LONG, specbits)
9417 || RIDBIT_SETP (RID_SHORT, specbits))
9418 && TREE_CODE (type) == REAL_TYPE)
9419 error ("long or short specified with floating type for `%s'", name);
9420 else if (RIDBIT_SETP (RID_SIGNED, specbits)
9421 && RIDBIT_SETP (RID_UNSIGNED, specbits))
9422 error ("signed and unsigned given together for `%s'", name);
9426 if (!explicit_int && !defaulted_int && !explicit_char && pedantic)
9428 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
9430 if (flag_pedantic_errors)
9435 /* Discard the type modifiers if they are invalid. */
9438 RIDBIT_RESET (RID_UNSIGNED, specbits);
9439 RIDBIT_RESET (RID_SIGNED, specbits);
9440 RIDBIT_RESET (RID_LONG, specbits);
9441 RIDBIT_RESET (RID_SHORT, specbits);
9446 if (RIDBIT_SETP (RID_COMPLEX, specbits)
9447 && TREE_CODE (type) != INTEGER_TYPE && TREE_CODE (type) != REAL_TYPE)
9449 error ("complex invalid for `%s'", name);
9450 RIDBIT_RESET (RID_COMPLEX, specbits);
9453 /* Decide whether an integer type is signed or not.
9454 Optionally treat bitfields as signed by default. */
9455 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
9456 || (bitfield && ! flag_signed_bitfields
9457 && (explicit_int || defaulted_int || explicit_char
9458 /* A typedef for plain `int' without `signed'
9459 can be controlled just like plain `int'. */
9460 || ! (typedef_decl != NULL_TREE
9461 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
9462 && TREE_CODE (type) != ENUMERAL_TYPE
9463 && RIDBIT_NOTSETP (RID_SIGNED, specbits)))
9466 type = long_long_unsigned_type_node;
9467 else if (RIDBIT_SETP (RID_LONG, specbits))
9468 type = long_unsigned_type_node;
9469 else if (RIDBIT_SETP (RID_SHORT, specbits))
9470 type = short_unsigned_type_node;
9471 else if (type == char_type_node)
9472 type = unsigned_char_type_node;
9473 else if (typedef_decl)
9474 type = unsigned_type (type);
9476 type = unsigned_type_node;
9478 else if (RIDBIT_SETP (RID_SIGNED, specbits)
9479 && type == char_type_node)
9480 type = signed_char_type_node;
9482 type = long_long_integer_type_node;
9483 else if (RIDBIT_SETP (RID_LONG, specbits))
9484 type = long_integer_type_node;
9485 else if (RIDBIT_SETP (RID_SHORT, specbits))
9486 type = short_integer_type_node;
9488 if (RIDBIT_SETP (RID_COMPLEX, specbits))
9490 /* If we just have "complex", it is equivalent to
9491 "complex double", but if any modifiers at all are specified it is
9492 the complex form of TYPE. E.g, "complex short" is
9493 "complex short int". */
9495 if (defaulted_int && ! longlong
9496 && ! (RIDBIT_SETP (RID_LONG, specbits)
9497 || RIDBIT_SETP (RID_SHORT, specbits)
9498 || RIDBIT_SETP (RID_SIGNED, specbits)
9499 || RIDBIT_SETP (RID_UNSIGNED, specbits)))
9500 type = complex_double_type_node;
9501 else if (type == integer_type_node)
9502 type = complex_integer_type_node;
9503 else if (type == float_type_node)
9504 type = complex_float_type_node;
9505 else if (type == double_type_node)
9506 type = complex_double_type_node;
9507 else if (type == long_double_type_node)
9508 type = complex_long_double_type_node;
9510 type = build_complex_type (type);
9513 if (return_type == return_conversion
9514 && (RIDBIT_SETP (RID_CONST, specbits)
9515 || RIDBIT_SETP (RID_VOLATILE, specbits)
9516 || RIDBIT_SETP (RID_RESTRICT, specbits)))
9517 cp_error ("qualifiers are not allowed on declaration of `operator %T'",
9520 /* Set CONSTP if this declaration is `const', whether by
9521 explicit specification or via a typedef.
9522 Likewise for VOLATILEP. */
9524 constp = !! RIDBIT_SETP (RID_CONST, specbits) + CP_TYPE_CONST_P (type);
9526 !! RIDBIT_SETP (RID_RESTRICT, specbits) + CP_TYPE_RESTRICT_P (type);
9528 !! RIDBIT_SETP (RID_VOLATILE, specbits) + CP_TYPE_VOLATILE_P (type);
9529 type_quals = ((constp ? TYPE_QUAL_CONST : 0)
9530 | (restrictp ? TYPE_QUAL_RESTRICT : 0)
9531 | (volatilep ? TYPE_QUAL_VOLATILE : 0));
9532 type = cp_build_qualified_type (type, type_quals);
9534 inlinep = !! RIDBIT_SETP (RID_INLINE, specbits);
9535 virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits);
9536 RIDBIT_RESET (RID_VIRTUAL, specbits);
9537 explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0;
9538 RIDBIT_RESET (RID_EXPLICIT, specbits);
9540 if (RIDBIT_SETP (RID_STATIC, specbits))
9541 staticp = 1 + (decl_context == FIELD);
9543 if (virtualp && staticp == 2)
9545 cp_error ("member `%D' cannot be declared both virtual and static",
9549 friendp = RIDBIT_SETP (RID_FRIEND, specbits);
9550 RIDBIT_RESET (RID_FRIEND, specbits);
9552 /* $7.1.2, Function specifiers */
9553 if (friendp && explicitp)
9554 error ("only declarations of constructors can be `explicit'");
9556 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9558 if (decl_context == PARM)
9560 error ("non-member `%s' cannot be declared `mutable'", name);
9561 RIDBIT_RESET (RID_MUTABLE, specbits);
9563 else if (friendp || decl_context == TYPENAME)
9565 error ("non-object member `%s' cannot be declared `mutable'", name);
9566 RIDBIT_RESET (RID_MUTABLE, specbits);
9570 /* Warn if two storage classes are given. Default to `auto'. */
9572 if (RIDBIT_ANY_SET (specbits))
9574 if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++;
9575 if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++;
9576 if (decl_context == PARM && nclasses > 0)
9577 error ("storage class specifiers invalid in parameter declarations");
9578 if (RIDBIT_SETP (RID_TYPEDEF, specbits))
9580 if (decl_context == PARM)
9581 error ("typedef declaration invalid in parameter declaration");
9584 if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++;
9585 if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++;
9588 /* Give error if `virtual' is used outside of class declaration. */
9590 && (current_class_name == NULL_TREE || decl_context != FIELD))
9592 error ("virtual outside class declaration");
9595 if (current_class_name == NULL_TREE && RIDBIT_SETP (RID_MUTABLE, specbits))
9597 error ("only members can be declared mutable");
9598 RIDBIT_RESET (RID_MUTABLE, specbits);
9601 /* Static anonymous unions are dealt with here. */
9602 if (staticp && decl_context == TYPENAME
9603 && TREE_CODE (declspecs) == TREE_LIST
9604 && ANON_UNION_TYPE_P (TREE_VALUE (declspecs)))
9605 decl_context = FIELD;
9607 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
9608 is used in a signature member function declaration. */
9609 if (decl_context == FIELD
9610 && IS_SIGNATURE (current_class_type)
9611 && RIDBIT_NOTSETP (RID_TYPEDEF, specbits))
9613 if (type_quals != TYPE_UNQUALIFIED)
9615 error ("type qualifiers specified for signature member function `%s'", name);
9616 type_quals = TYPE_UNQUALIFIED;
9620 error ("`inline' specified for signature member function `%s'", name);
9621 /* Later, we'll make signature member functions inline. */
9626 error ("`friend' declaration in signature definition");
9631 error ("`virtual' specified for signature member function `%s'",
9633 /* Later, we'll make signature member functions virtual. */
9638 /* Warn about storage classes that are invalid for certain
9639 kinds of declarations (parameters, typenames, etc.). */
9642 error ("multiple storage classes in declaration of `%s'", name);
9643 else if (decl_context != NORMAL && nclasses > 0)
9645 if ((decl_context == PARM || decl_context == CATCHPARM)
9646 && (RIDBIT_SETP (RID_REGISTER, specbits)
9647 || RIDBIT_SETP (RID_AUTO, specbits)))
9649 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
9651 else if (decl_context == FIELD
9652 && ! IS_SIGNATURE (current_class_type)
9653 /* C++ allows static class elements */
9654 && RIDBIT_SETP (RID_STATIC, specbits))
9655 /* C++ also allows inlines and signed and unsigned elements,
9656 but in those cases we don't come in here. */
9660 if (decl_context == FIELD)
9662 tree tmp = NULL_TREE;
9663 register int op = 0;
9667 /* Avoid trying to get an operand off an identifier node. */
9668 if (TREE_CODE (declarator) == IDENTIFIER_NODE)
9671 tmp = TREE_OPERAND (declarator, 0);
9672 op = IDENTIFIER_OPNAME_P (tmp);
9674 error ("storage class specified for %s `%s'",
9675 IS_SIGNATURE (current_class_type)
9677 ? "signature member operator"
9678 : "signature member function")
9679 : (op ? "member operator" : "field"),
9680 op ? operator_name_string (tmp) : name);
9683 error (((decl_context == PARM || decl_context == CATCHPARM)
9684 ? "storage class specified for parameter `%s'"
9685 : "storage class specified for typename"), name);
9686 RIDBIT_RESET (RID_REGISTER, specbits);
9687 RIDBIT_RESET (RID_AUTO, specbits);
9688 RIDBIT_RESET (RID_EXTERN, specbits);
9690 if (decl_context == FIELD && IS_SIGNATURE (current_class_type))
9692 RIDBIT_RESET (RID_STATIC, specbits);
9697 else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag)
9699 if (toplevel_bindings_p ())
9701 /* It's common practice (and completely valid) to have a const
9702 be initialized and declared extern. */
9703 if (!(type_quals & TYPE_QUAL_CONST))
9704 warning ("`%s' initialized and declared `extern'", name);
9707 error ("`%s' has both `extern' and initializer", name);
9709 else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag
9710 && ! toplevel_bindings_p ())
9711 error ("nested function `%s' declared `extern'", name);
9712 else if (toplevel_bindings_p ())
9714 if (RIDBIT_SETP (RID_AUTO, specbits))
9715 error ("top-level declaration of `%s' specifies `auto'", name);
9718 if (nclasses > 0 && friendp)
9719 error ("storage class specifiers invalid in friend function declarations");
9721 /* Now figure out the structure of the declarator proper.
9722 Descend through it, creating more complex types, until we reach
9723 the declared identifier (or NULL_TREE, in an absolute declarator). */
9725 inner_attrs = NULL_TREE;
9728 while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE
9729 && TREE_CODE (declarator) != TEMPLATE_ID_EXPR)
9731 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
9732 an INDIRECT_REF (for *...),
9733 a CALL_EXPR (for ...(...)),
9734 an identifier (for the name being declared)
9735 or a null pointer (for the place in an absolute declarator
9736 where the name was omitted).
9737 For the last two cases, we have just exited the loop.
9739 For C++ it could also be
9740 a SCOPE_REF (for class :: ...). In this case, we have converted
9741 sensible names to types, and those are the values we use to
9742 qualify the member name.
9743 an ADDR_EXPR (for &...),
9744 a BIT_NOT_EXPR (for destructors)
9746 At this point, TYPE is the type of elements of an array,
9747 or for a function to return, or for a pointer to point to.
9748 After this sequence of ifs, TYPE is the type of the
9749 array or function or pointer, and DECLARATOR has had its
9750 outermost layer removed. */
9752 if (type == error_mark_node)
9754 if (TREE_CODE (declarator) == SCOPE_REF)
9755 declarator = TREE_OPERAND (declarator, 1);
9757 declarator = TREE_OPERAND (declarator, 0);
9760 if (quals != NULL_TREE
9761 && (declarator == NULL_TREE
9762 || TREE_CODE (declarator) != SCOPE_REF))
9764 if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE)
9765 ctype = TYPE_METHOD_BASETYPE (type);
9766 if (ctype != NULL_TREE)
9768 tree dummy = build_decl (TYPE_DECL, NULL_TREE, type);
9769 ctype = grok_method_quals (ctype, dummy, quals);
9770 type = TREE_TYPE (dummy);
9775 /* See the comment for the TREE_LIST case, below. */
9778 else if (inner_attrs)
9780 decl_attributes (type, inner_attrs, NULL_TREE);
9781 inner_attrs = NULL_TREE;
9784 switch (TREE_CODE (declarator))
9788 /* We encode a declarator with embedded attributes using
9789 a TREE_LIST. The attributes apply to the declarator
9790 directly inside them, so we have to skip an iteration
9791 before applying them to the type. If the declarator just
9792 inside is the declarator-id, we apply the attrs to the
9794 inner_attrs = TREE_PURPOSE (declarator);
9796 declarator = TREE_VALUE (declarator);
9802 register tree itype = NULL_TREE;
9803 register tree size = TREE_OPERAND (declarator, 1);
9804 /* The index is a signed object `sizetype' bits wide. */
9805 tree index_type = signed_type (sizetype);
9807 declarator = TREE_OPERAND (declarator, 0);
9809 /* Check for some types that there cannot be arrays of. */
9811 if (TREE_CODE (type) == VOID_TYPE)
9813 cp_error ("declaration of `%D' as array of voids", dname);
9814 type = error_mark_node;
9817 if (TREE_CODE (type) == FUNCTION_TYPE)
9819 cp_error ("declaration of `%D' as array of functions", dname);
9820 type = error_mark_node;
9823 /* ARM $8.4.3: Since you can't have a pointer to a reference,
9824 you can't have arrays of references. If we allowed them,
9825 then we'd be saying x[i] is valid for an array x, but
9826 then you'd have to ask: what does `*(x + i)' mean? */
9827 if (TREE_CODE (type) == REFERENCE_TYPE)
9829 if (decl_context == TYPENAME)
9830 cp_error ("cannot make arrays of references");
9832 cp_error ("declaration of `%D' as array of references",
9834 type = error_mark_node;
9837 if (TREE_CODE (type) == OFFSET_TYPE)
9839 cp_error ("declaration of `%D' as array of data members",
9841 type = error_mark_node;
9844 if (TREE_CODE (type) == METHOD_TYPE)
9846 cp_error ("declaration of `%D' as array of function members",
9848 type = error_mark_node;
9851 if (size == error_mark_node)
9852 type = error_mark_node;
9853 else if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type))
9857 the constant expressions that specify the bounds of
9858 the arrays can be omitted only for the first member
9860 cp_error ("declaration of `%D' as multidimensional array",
9862 cp_error ("must have bounds for all dimensions except the first");
9863 type = error_mark_node;
9866 if (type == error_mark_node)
9871 /* Must suspend_momentary here because the index
9872 type may need to live until the end of the function.
9873 For example, it is used in the declaration of a
9874 variable which requires destructing at the end of
9875 the function; then build_vec_delete will need this
9877 int yes = suspend_momentary ();
9878 /* Might be a cast. */
9879 if (TREE_CODE (size) == NOP_EXPR
9880 && TREE_TYPE (size) == TREE_TYPE (TREE_OPERAND (size, 0)))
9881 size = TREE_OPERAND (size, 0);
9883 /* If this involves a template parameter, it'll be
9884 constant, but we don't know what the value is yet. */
9885 if (uses_template_parms (size))
9887 /* Resolve a qualified reference to an enumerator or
9888 static const data member of ours. */
9889 if (TREE_CODE (size) == SCOPE_REF
9890 && TREE_OPERAND (size, 0) == current_class_type)
9892 tree t = lookup_field (current_class_type,
9893 TREE_OPERAND (size, 1), 0, 0);
9898 itype = make_node (INTEGER_TYPE);
9899 TYPE_MIN_VALUE (itype) = size_zero_node;
9900 TYPE_MAX_VALUE (itype) = build_min
9901 (MINUS_EXPR, sizetype, size, integer_one_node);
9902 goto dont_grok_size;
9905 if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE
9906 && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE
9907 && TREE_CODE (TREE_TYPE (size)) != BOOLEAN_TYPE)
9909 cp_error ("size of array `%D' has non-integer type",
9911 size = integer_one_node;
9913 if (TREE_READONLY_DECL_P (size))
9914 size = decl_constant_value (size);
9915 if (pedantic && integer_zerop (size))
9916 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname);
9917 if (TREE_CONSTANT (size))
9919 int old_flag_pedantic_errors = flag_pedantic_errors;
9920 int old_pedantic = pedantic;
9921 pedantic = flag_pedantic_errors = 1;
9922 /* Always give overflow errors on array subscripts. */
9923 constant_expression_warning (size);
9924 pedantic = old_pedantic;
9925 flag_pedantic_errors = old_flag_pedantic_errors;
9926 if (INT_CST_LT (size, integer_zero_node))
9928 cp_error ("size of array `%D' is negative", dname);
9929 size = integer_one_node;
9937 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
9940 cp_pedwarn ("ANSI C++ forbids variable-size array");
9945 = fold (build_binary_op (MINUS_EXPR,
9946 cp_convert (index_type, size),
9947 cp_convert (index_type,
9948 integer_one_node), 1));
9949 if (! TREE_CONSTANT (itype))
9950 itype = variable_size (itype);
9951 else if (TREE_OVERFLOW (itype))
9953 error ("overflow in array dimension");
9954 TREE_OVERFLOW (itype) = 0;
9957 /* If we're a parm, we need to have a permanent type so
9958 mangling checks for re-use will work right. If both the
9959 element and index types are permanent, the array type
9961 if (decl_context == PARM
9962 && allocation_temporary_p () && TREE_PERMANENT (type))
9964 push_obstacks (&permanent_obstack, &permanent_obstack);
9965 itype = build_index_type (itype);
9969 itype = build_index_type (itype);
9972 resume_momentary (yes);
9975 type = build_cplus_array_type (type, itype);
9984 tree inner_parms = TREE_OPERAND (declarator, 1);
9985 tree inner_decl = TREE_OPERAND (declarator, 0);
9987 /* Declaring a function type.
9988 Make sure we have a valid type for the function to return. */
9990 /* We now know that the TYPE_QUALS don't apply to the
9991 decl, but to its return type. */
9992 type_quals = TYPE_UNQUALIFIED;
9994 /* Warn about some types functions can't return. */
9996 if (TREE_CODE (type) == FUNCTION_TYPE)
9998 error ("`%s' declared as function returning a function", name);
9999 type = integer_type_node;
10001 if (TREE_CODE (type) == ARRAY_TYPE)
10003 error ("`%s' declared as function returning an array", name);
10004 type = integer_type_node;
10007 if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF)
10008 inner_decl = TREE_OPERAND (inner_decl, 1);
10010 if (inner_decl && TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR)
10011 inner_decl = dname;
10013 /* Pick up type qualifiers which should be applied to `this'. */
10014 quals = TREE_OPERAND (declarator, 2);
10016 /* Pick up the exception specifications. */
10017 raises = TREE_TYPE (declarator);
10019 /* Say it's a definition only for the CALL_EXPR
10020 closest to the identifier. */
10023 && (TREE_CODE (inner_decl) == IDENTIFIER_NODE
10024 || TREE_CODE (inner_decl) == TEMPLATE_ID_EXPR
10025 || TREE_CODE (inner_decl) == BIT_NOT_EXPR);
10027 if (ctype == NULL_TREE
10028 && decl_context == FIELD
10030 && (friendp == 0 || dname == current_class_name))
10031 ctype = current_class_type;
10033 if (ctype && return_type == return_conversion)
10034 TYPE_HAS_CONVERSION (ctype) = 1;
10035 if (ctype && constructor_name (ctype) == dname)
10037 /* We are within a class's scope. If our declarator name
10038 is the same as the class name, and we are defining
10039 a function, then it is a constructor/destructor, and
10040 therefore returns a void type. */
10042 if (flags == DTOR_FLAG)
10044 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
10045 not be declared const or volatile. A destructor
10046 may not be static. */
10048 error ("destructor cannot be static member function");
10051 cp_error ("destructors may not be `%s'",
10052 IDENTIFIER_POINTER (TREE_VALUE (quals)));
10055 if (decl_context == FIELD)
10057 if (! member_function_or_else (ctype, current_class_type,
10058 "destructor for alien class `%s' cannot be a member"))
10059 return void_type_node;
10062 else /* It's a constructor. */
10064 if (explicitp == 1)
10066 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
10067 not be declared const or volatile. A constructor may
10068 not be virtual. A constructor may not be static. */
10070 error ("constructor cannot be static member function");
10073 pedwarn ("constructors cannot be declared virtual");
10078 cp_error ("constructors may not be `%s'",
10079 IDENTIFIER_POINTER (TREE_VALUE (quals)));
10083 RID_BIT_TYPE tmp_bits;
10084 bcopy ((void*)&specbits, (void*)&tmp_bits, sizeof (RID_BIT_TYPE));
10085 RIDBIT_RESET (RID_INLINE, tmp_bits);
10086 RIDBIT_RESET (RID_STATIC, tmp_bits);
10087 if (RIDBIT_ANY_SET (tmp_bits))
10088 error ("return value type specifier for constructor ignored");
10090 type = build_pointer_type (ctype);
10091 if (decl_context == FIELD
10092 && IS_SIGNATURE (current_class_type))
10094 error ("constructor not allowed in signature");
10095 return void_type_node;
10097 else if (decl_context == FIELD)
10099 if (! member_function_or_else (ctype, current_class_type,
10100 "constructor for alien class `%s' cannot be member"))
10101 return void_type_node;
10102 TYPE_HAS_CONSTRUCTOR (ctype) = 1;
10103 if (return_type != return_ctor)
10107 if (decl_context == FIELD)
10113 error ("can't initialize friend function `%s'", name);
10116 /* Cannot be both friend and virtual. */
10117 error ("virtual functions cannot be friends");
10118 RIDBIT_RESET (RID_FRIEND, specbits);
10121 if (decl_context == NORMAL)
10122 error ("friend declaration not in class definition");
10123 if (current_function_decl && funcdef_flag)
10124 cp_error ("can't define friend function `%s' in a local class definition",
10128 /* Construct the function type and go to the next
10129 inner layer of declarator. */
10131 declarator = TREE_OPERAND (declarator, 0);
10133 /* FIXME: This is where default args should be fully
10136 arg_types = grokparms (inner_parms, funcdecl_p ? funcdef_flag : 0);
10138 if (declarator && flags == DTOR_FLAG)
10140 /* A destructor declared in the body of a class will
10141 be represented as a BIT_NOT_EXPR. But, we just
10142 want the underlying IDENTIFIER. */
10143 if (TREE_CODE (declarator) == BIT_NOT_EXPR)
10144 declarator = TREE_OPERAND (declarator, 0);
10146 if (strict_prototype == 0 && arg_types == NULL_TREE)
10147 arg_types = void_list_node;
10148 else if (arg_types == NULL_TREE
10149 || arg_types != void_list_node)
10151 cp_error ("destructors may not have parameters");
10152 arg_types = void_list_node;
10153 last_function_parms = NULL_TREE;
10157 /* ANSI says that `const int foo ();'
10158 does not make the function foo const. */
10159 type = build_function_type (type, arg_types);
10163 for (t = arg_types; t; t = TREE_CHAIN (t))
10164 if (TREE_PURPOSE (t)
10165 && TREE_CODE (TREE_PURPOSE (t)) == DEFAULT_ARG)
10167 add_defarg_fn (type);
10176 /* Filter out pointers-to-references and references-to-references.
10177 We can get these if a TYPE_DECL is used. */
10179 if (TREE_CODE (type) == REFERENCE_TYPE)
10181 error ("cannot declare %s to references",
10182 TREE_CODE (declarator) == ADDR_EXPR
10183 ? "references" : "pointers");
10184 declarator = TREE_OPERAND (declarator, 0);
10188 if (TREE_CODE (type) == OFFSET_TYPE
10189 && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE
10190 || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE))
10192 cp_error ("cannot declare pointer to `%#T' member",
10194 type = TREE_TYPE (type);
10197 /* Merge any constancy or volatility into the target type
10198 for the pointer. */
10200 /* We now know that the TYPE_QUALS don't apply to the decl,
10201 but to the target of the pointer. */
10202 type_quals = TYPE_UNQUALIFIED;
10204 if (IS_SIGNATURE (type))
10206 if (TREE_CODE (declarator) == ADDR_EXPR)
10208 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
10209 && TYPE_SIZE (type))
10210 cp_warning ("empty signature `%T' used in signature reference declaration",
10213 type = build_signature_reference_type (type);
10215 sorry ("signature reference");
10221 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
10222 && TYPE_SIZE (type))
10223 cp_warning ("empty signature `%T' used in signature pointer declaration",
10225 type = build_signature_pointer_type (type);
10228 else if (TREE_CODE (declarator) == ADDR_EXPR)
10230 if (TREE_CODE (type) == VOID_TYPE)
10231 error ("invalid type: `void &'");
10233 type = build_reference_type (type);
10235 else if (TREE_CODE (type) == METHOD_TYPE)
10236 type = build_ptrmemfunc_type (build_pointer_type (type));
10238 type = build_pointer_type (type);
10240 /* Process a list of type modifier keywords (such as
10241 const or volatile) that were given inside the `*' or `&'. */
10243 if (TREE_TYPE (declarator))
10245 register tree typemodlist;
10251 for (typemodlist = TREE_TYPE (declarator); typemodlist;
10252 typemodlist = TREE_CHAIN (typemodlist))
10254 tree qualifier = TREE_VALUE (typemodlist);
10256 if (qualifier == ridpointers[(int) RID_CONST])
10258 else if (qualifier == ridpointers[(int) RID_VOLATILE])
10260 else if (qualifier == ridpointers[(int) RID_RESTRICT])
10265 error ("invalid type modifier within pointer declarator");
10269 pedwarn ("duplicate `const'");
10271 pedwarn ("duplicate `volatile'");
10273 pedwarn ("duplicate `restrict'");
10275 type_quals = ((constp ? TYPE_QUAL_CONST : 0)
10276 | (restrictp ? TYPE_QUAL_RESTRICT : 0)
10277 | (volatilep ? TYPE_QUAL_VOLATILE : 0));
10278 if (TREE_CODE (declarator) == ADDR_EXPR
10279 && (constp || volatilep))
10282 pedwarn ("discarding `const' applied to a reference");
10284 pedwarn ("discarding `volatile' applied to a reference");
10285 type_quals &= ~(TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE);
10287 type = cp_build_qualified_type (type, type_quals);
10289 declarator = TREE_OPERAND (declarator, 0);
10295 /* We have converted type names to NULL_TREE if the
10296 name was bogus, or to a _TYPE node, if not.
10298 The variable CTYPE holds the type we will ultimately
10299 resolve to. The code here just needs to build
10300 up appropriate member types. */
10301 tree sname = TREE_OPERAND (declarator, 1);
10304 /* Destructors can have their visibilities changed as well. */
10305 if (TREE_CODE (sname) == BIT_NOT_EXPR)
10306 sname = TREE_OPERAND (sname, 0);
10308 if (TREE_COMPLEXITY (declarator) == 0)
10309 /* This needs to be here, in case we are called
10310 multiple times. */ ;
10311 else if (TREE_COMPLEXITY (declarator) == -1)
10312 /* Namespace member. */
10313 pop_decl_namespace ();
10314 else if (friendp && (TREE_COMPLEXITY (declarator) < 2))
10315 /* Don't fall out into global scope. Hides real bug? --eichin */ ;
10316 else if (! IS_AGGR_TYPE_CODE
10317 (TREE_CODE (TREE_OPERAND (declarator, 0))))
10319 else if (TREE_COMPLEXITY (declarator) == current_class_depth)
10321 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
10322 that refer to ctype. They couldn't be resolved earlier
10323 because we hadn't pushed into the class yet.
10324 Example: resolve 'B<T>::type' in
10325 'B<typename B<T>::type> B<T>::f () { }'. */
10326 if (current_template_parms
10327 && uses_template_parms (type)
10328 && uses_template_parms (current_class_type))
10330 tree args = current_template_args ();
10331 type = tsubst (type, args, NULL_TREE);
10334 /* This pop_nested_class corresponds to the
10335 push_nested_class used to push into class scope for
10336 parsing the argument list of a function decl, in
10338 pop_nested_class (1);
10339 TREE_COMPLEXITY (declarator) = current_class_depth;
10342 my_friendly_abort (16);
10344 if (TREE_OPERAND (declarator, 0) == NULL_TREE)
10346 /* We had a reference to a global decl, or
10347 perhaps we were given a non-aggregate typedef,
10348 in which case we cleared this out, and should just
10349 keep going as though it wasn't there. */
10350 declarator = sname;
10353 ctype = TREE_OPERAND (declarator, 0);
10356 while (t != NULL_TREE && CLASS_TYPE_P (t))
10358 if (CLASSTYPE_TEMPLATE_INFO (t) &&
10359 !CLASSTYPE_TEMPLATE_SPECIALIZATION (t))
10360 template_count += 1;
10361 t = TYPE_MAIN_DECL (t);
10362 if (DECL_LANG_SPECIFIC (t))
10363 t = DECL_CLASS_CONTEXT (t);
10368 if (sname == NULL_TREE)
10371 if (TREE_CODE (sname) == IDENTIFIER_NODE)
10373 /* This is the `standard' use of the scoping operator:
10374 basetype :: member . */
10376 if (ctype == current_class_type)
10382 Is this ill-formed? */
10385 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
10388 else if (TREE_CODE (type) == FUNCTION_TYPE)
10390 if (current_class_type == NULL_TREE
10392 type = build_cplus_method_type (ctype, TREE_TYPE (type),
10393 TYPE_ARG_TYPES (type));
10396 cp_error ("cannot declare member function `%T::%s' within `%T'",
10397 ctype, name, current_class_type);
10398 return void_type_node;
10401 else if (RIDBIT_SETP (RID_TYPEDEF, specbits)
10402 || TYPE_SIZE (complete_type (ctype)) != NULL_TREE)
10404 /* Have to move this code elsewhere in this function.
10405 this code is used for i.e., typedef int A::M; M *pm;
10407 It is? How? jason 10/2/94 */
10409 if (current_class_type)
10411 cp_error ("cannot declare member `%T::%s' within `%T'",
10412 ctype, name, current_class_type);
10413 return void_type_node;
10415 type = build_offset_type (ctype, type);
10417 else if (uses_template_parms (ctype))
10419 if (TREE_CODE (type) == FUNCTION_TYPE)
10421 = build_cplus_method_type (ctype, TREE_TYPE (type),
10422 TYPE_ARG_TYPES (type));
10426 cp_error ("structure `%T' not yet defined", ctype);
10427 return error_mark_node;
10430 declarator = sname;
10432 else if (TREE_CODE (sname) == SCOPE_REF)
10433 my_friendly_abort (17);
10437 declarator = TREE_OPERAND (declarator, 1);
10438 if (declarator && TREE_CODE (declarator) == CALL_EXPR)
10439 /* In this case, we will deal with it later. */
10443 if (TREE_CODE (type) == FUNCTION_TYPE)
10444 type = build_cplus_method_type (ctype, TREE_TYPE (type),
10445 TYPE_ARG_TYPES (type));
10447 type = build_offset_type (ctype, type);
10454 declarator = TREE_OPERAND (declarator, 0);
10459 case ENUMERAL_TYPE:
10460 declarator = NULL_TREE;
10464 declarator = NULL_TREE;
10468 my_friendly_abort (158);
10472 /* See the comment for the TREE_LIST case, above. */
10475 if (! ignore_attrs)
10476 decl_attributes (type, inner_attrs, NULL_TREE);
10478 TREE_VALUE (attrlist) = chainon (inner_attrs, TREE_VALUE (attrlist));
10480 attrlist = build_decl_list (NULL_TREE, inner_attrs);
10483 if (explicitp == 1)
10485 error ("only constructors can be declared `explicit'");
10489 /* Now TYPE has the actual type. */
10491 /* If this is declaring a typedef name, return a TYPE_DECL. */
10493 if (RIDBIT_SETP (RID_MUTABLE, specbits))
10495 if (type_quals & TYPE_QUAL_CONST)
10497 error ("const `%s' cannot be declared `mutable'", name);
10498 RIDBIT_RESET (RID_MUTABLE, specbits);
10502 error ("static `%s' cannot be declared `mutable'", name);
10503 RIDBIT_RESET (RID_MUTABLE, specbits);
10507 if (RIDBIT_SETP (RID_TYPEDEF, specbits) && decl_context != TYPENAME)
10511 /* Note that the grammar rejects storage classes
10512 in typenames, fields or parameters. */
10513 if (current_lang_name == lang_name_java)
10514 TYPE_FOR_JAVA (type) = 1;
10516 if (decl_context == FIELD)
10518 if (declarator == constructor_name (current_class_type))
10519 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
10521 decl = build_lang_decl (TYPE_DECL, declarator, type);
10522 if (IS_SIGNATURE (current_class_type) && opaque_typedef)
10523 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type) = 1;
10527 /* Make sure this typedef lives as long as its type,
10528 since it might be used as a template parameter. */
10529 if (type != error_mark_node)
10530 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
10531 decl = build_decl (TYPE_DECL, declarator, type);
10532 if (type != error_mark_node)
10536 /* If the user declares "struct {...} foo" then `foo' will have
10537 an anonymous name. Fill that name in now. Nothing can
10538 refer to it, so nothing needs know about the name change.
10539 The TYPE_NAME field was filled in by build_struct_xref. */
10540 if (type != error_mark_node
10541 && TYPE_NAME (type)
10542 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
10543 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type)))
10545 /* FIXME: This is bogus; we should not be doing this for
10546 cv-qualified types. */
10548 /* For anonymous structs that are cv-qualified, need to use
10549 TYPE_MAIN_VARIANT so that name will mangle correctly. As
10550 type not referenced after this block, don't bother
10551 resetting type to original type, ie. TREE_TYPE (decl). */
10552 type = TYPE_MAIN_VARIANT (type);
10554 /* Replace the anonymous name with the real name everywhere. */
10555 lookup_tag_reverse (type, declarator);
10556 TYPE_NAME (type) = decl;
10558 if (TYPE_LANG_SPECIFIC (type))
10559 TYPE_WAS_ANONYMOUS (type) = 1;
10561 /* If this is a typedef within a template class, the nested
10562 type is a (non-primary) template. The name for the
10563 template needs updating as well. */
10564 if (TYPE_LANG_SPECIFIC (type) && CLASSTYPE_TEMPLATE_INFO (type))
10565 DECL_NAME (CLASSTYPE_TI_TEMPLATE (type))
10566 = TYPE_IDENTIFIER (type);
10568 /* XXX Temporarily set the scope.
10569 When returning, start_decl expects it as NULL_TREE,
10570 and will then then set it using pushdecl. */
10571 my_friendly_assert (DECL_CONTEXT (decl) == NULL_TREE, 980404);
10572 if (current_class_type)
10573 DECL_CONTEXT (decl) = current_class_type;
10575 DECL_CONTEXT (decl) = FROB_CONTEXT (current_namespace);
10577 DECL_ASSEMBLER_NAME (decl) = DECL_NAME (decl);
10578 DECL_ASSEMBLER_NAME (decl)
10579 = get_identifier (build_overload_name (type, 1, 1));
10580 DECL_CONTEXT (decl) = NULL_TREE;
10582 /* FIXME remangle member functions; member functions of a
10583 type with external linkage have external linkage. */
10586 if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE)
10588 cp_error_at ("typedef name may not be class-qualified", decl);
10593 if (ctype == NULL_TREE)
10595 if (TREE_CODE (type) != METHOD_TYPE)
10596 cp_error_at ("invalid type qualifier for non-method type", decl);
10598 ctype = TYPE_METHOD_BASETYPE (type);
10600 if (ctype != NULL_TREE)
10601 grok_method_quals (ctype, decl, quals);
10604 if (RIDBIT_SETP (RID_SIGNED, specbits)
10605 || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
10606 C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
10608 if (RIDBIT_SETP (RID_MUTABLE, specbits))
10609 error ("non-object member `%s' cannot be declared mutable", name);
10611 bad_specifiers (decl, "type", virtualp, quals != NULL_TREE,
10612 inlinep, friendp, raises != NULL_TREE);
10615 error ("typedef declaration includes an initializer");
10620 /* Detect the case of an array type of unspecified size
10621 which came, as such, direct from a typedef name.
10622 We must copy the type, so that each identifier gets
10623 a distinct type, so that each identifier's size can be
10624 controlled separately by its own initializer. */
10626 if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE
10627 && TYPE_DOMAIN (type) == NULL_TREE)
10629 type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type));
10632 /* If this is a type name (such as, in a cast or sizeof),
10633 compute the type and return it now. */
10635 if (decl_context == TYPENAME)
10637 /* Note that the grammar rejects storage classes
10638 in typenames, fields or parameters. */
10639 if (type_quals != TYPE_UNQUALIFIED)
10641 if (IS_SIGNATURE (type))
10642 error ("type qualifiers specified for signature type");
10643 type_quals = TYPE_UNQUALIFIED;
10646 /* Special case: "friend class foo" looks like a TYPENAME context. */
10649 if (type_quals != TYPE_UNQUALIFIED)
10651 cp_error ("type qualifiers specified for friend class declaration");
10652 type_quals = TYPE_UNQUALIFIED;
10656 cp_error ("`inline' specified for friend class declaration");
10660 /* Only try to do this stuff if we didn't already give up. */
10661 if (type != integer_type_node)
10663 /* A friendly class? */
10664 if (current_class_type)
10665 make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type));
10667 error ("trying to make class `%s' a friend of global scope",
10668 TYPE_NAME_STRING (type));
10669 type = void_type_node;
10674 tree dummy = build_decl (TYPE_DECL, declarator, type);
10675 if (ctype == NULL_TREE)
10677 my_friendly_assert (TREE_CODE (type) == METHOD_TYPE, 159);
10678 ctype = TYPE_METHOD_BASETYPE (type);
10680 grok_method_quals (ctype, dummy, quals);
10681 type = TREE_TYPE (dummy);
10686 else if (declarator == NULL_TREE && decl_context != PARM
10687 && decl_context != CATCHPARM
10688 && TREE_CODE (type) != UNION_TYPE
10691 cp_error ("abstract declarator `%T' used as declaration", type);
10692 declarator = make_anon_name ();
10695 /* `void' at top level (not within pointer)
10696 is allowed only in typedefs or type names.
10697 We don't complain about parms either, but that is because
10698 a better error message can be made later. */
10700 if (TREE_CODE (type) == VOID_TYPE && decl_context != PARM)
10703 error ("unnamed variable or field declared void");
10704 else if (TREE_CODE (declarator) == IDENTIFIER_NODE)
10706 if (IDENTIFIER_OPNAME_P (declarator))
10707 my_friendly_abort (356);
10709 error ("variable or field `%s' declared void", name);
10712 error ("variable or field declared void");
10713 type = integer_type_node;
10716 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
10717 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
10719 if (decl_context == PARM || decl_context == CATCHPARM)
10721 if (ctype || in_namespace)
10722 error ("cannot use `::' in parameter declaration");
10724 /* A parameter declared as an array of T is really a pointer to T.
10725 One declared as a function is really a pointer to a function.
10726 One declared as a member is really a pointer to member. */
10728 if (TREE_CODE (type) == ARRAY_TYPE)
10730 /* Transfer const-ness of array into that of type pointed to. */
10731 type = build_pointer_type (TREE_TYPE (type));
10732 type_quals = TYPE_UNQUALIFIED;
10734 else if (TREE_CODE (type) == FUNCTION_TYPE)
10735 type = build_pointer_type (type);
10736 else if (TREE_CODE (type) == OFFSET_TYPE)
10737 type = build_pointer_type (type);
10738 else if (TREE_CODE (type) == VOID_TYPE && declarator)
10740 error ("declaration of `%s' as void", name);
10746 register tree decl;
10748 if (decl_context == PARM)
10750 decl = build_decl (PARM_DECL, declarator, type);
10752 bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE,
10753 inlinep, friendp, raises != NULL_TREE);
10754 if (current_class_type
10755 && IS_SIGNATURE (current_class_type))
10758 error ("parameter of signature member function declared `inline'");
10759 if (RIDBIT_SETP (RID_AUTO, specbits))
10760 error ("parameter of signature member function declared `auto'");
10761 if (RIDBIT_SETP (RID_REGISTER, specbits))
10762 error ("parameter of signature member function declared `register'");
10765 /* Compute the type actually passed in the parmlist,
10766 for the case where there is no prototype.
10767 (For example, shorts and chars are passed as ints.)
10768 When there is a prototype, this is overridden later. */
10770 DECL_ARG_TYPE (decl) = type_promotes_to (type);
10772 else if (decl_context == FIELD)
10774 if (type == error_mark_node)
10776 /* Happens when declaring arrays of sizes which
10777 are error_mark_node, for example. */
10780 else if (in_namespace && !friendp)
10782 /* Something like struct S { int N::j; }; */
10783 cp_error ("invalid use of `::'");
10786 else if (TREE_CODE (type) == FUNCTION_TYPE)
10789 tree function_context;
10791 /* We catch the others as conflicts with the builtin
10793 if (friendp && declarator == ridpointers[(int) RID_SIGNED])
10795 cp_error ("function `%D' cannot be declared friend",
10802 if (ctype == NULL_TREE)
10803 ctype = current_class_type;
10805 if (ctype == NULL_TREE)
10807 cp_error ("can't make `%D' into a method -- not in a class",
10809 return void_type_node;
10812 /* ``A union may [ ... ] not [ have ] virtual functions.''
10814 if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
10816 cp_error ("function `%D' declared virtual inside a union",
10818 return void_type_node;
10821 if (declarator == ansi_opname[(int) NEW_EXPR]
10822 || declarator == ansi_opname[(int) VEC_NEW_EXPR]
10823 || declarator == ansi_opname[(int) DELETE_EXPR]
10824 || declarator == ansi_opname[(int) VEC_DELETE_EXPR])
10828 cp_error ("`%D' cannot be declared virtual, since it is always static",
10833 else if (staticp < 2)
10834 type = build_cplus_method_type (ctype, TREE_TYPE (type),
10835 TYPE_ARG_TYPES (type));
10838 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
10839 function_context = (ctype != NULL_TREE) ?
10840 hack_decl_function_context (TYPE_MAIN_DECL (ctype)) : NULL_TREE;
10841 publicp = (! friendp || ! staticp)
10842 && function_context == NULL_TREE;
10843 decl = grokfndecl (ctype, type,
10844 TREE_CODE (declarator) != TEMPLATE_ID_EXPR
10845 ? declarator : dname,
10847 virtualp, flags, quals, raises, attrlist,
10848 friendp ? -1 : 0, friendp, publicp, inlinep,
10849 funcdef_flag, template_count, in_namespace);
10850 if (decl == NULL_TREE || decl == error_mark_node)
10853 /* This clobbers the attrs stored in `decl' from `attrlist'. */
10854 /* The decl and setting of decl_machine_attr is also turned off. */
10855 decl = build_decl_attribute_variant (decl, decl_machine_attr);
10858 /* [class.conv.ctor]
10860 A constructor declared without the function-specifier
10861 explicit that can be called with a single parameter
10862 specifies a conversion from the type of its first
10863 parameter to the type of its class. Such a constructor
10864 is called a converting constructor. */
10865 if (explicitp == 2)
10866 DECL_NONCONVERTING_P (decl) = 1;
10867 else if (DECL_CONSTRUCTOR_P (decl))
10869 /* The constructor can be called with exactly one
10870 parameter if there is at least one parameter, and
10871 any subsequent parameters have default arguments.
10872 We don't look at the first parameter, which is
10873 really just the `this' parameter for the new
10876 TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)));
10878 /* Skip the `in_chrg' argument too, if present. */
10879 if (TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (decl)))
10880 arg_types = TREE_CHAIN (arg_types);
10882 if (arg_types == void_list_node
10884 && TREE_CHAIN (arg_types)
10885 && TREE_CHAIN (arg_types) != void_list_node
10886 && !TREE_PURPOSE (TREE_CHAIN (arg_types))))
10887 DECL_NONCONVERTING_P (decl) = 1;
10890 else if (TREE_CODE (type) == METHOD_TYPE)
10892 /* We only get here for friend declarations of
10893 members of other classes. */
10894 /* All method decls are public, so tell grokfndecl to set
10895 TREE_PUBLIC, also. */
10896 decl = grokfndecl (ctype, type, declarator, declarator,
10897 virtualp, flags, quals, raises, attrlist,
10898 friendp ? -1 : 0, friendp, 1, 0, funcdef_flag,
10899 template_count, in_namespace);
10900 if (decl == NULL_TREE)
10903 else if (!staticp && ! processing_template_decl
10904 && TYPE_SIZE (complete_type (type)) == NULL_TREE
10905 && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
10908 cp_error ("field `%D' has incomplete type", declarator);
10910 cp_error ("name `%T' has incomplete type", type);
10912 /* If we're instantiating a template, tell them which
10913 instantiation made the field's type be incomplete. */
10914 if (current_class_type
10915 && TYPE_NAME (current_class_type)
10916 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type))
10917 && declspecs && TREE_VALUE (declspecs)
10918 && TREE_TYPE (TREE_VALUE (declspecs)) == type)
10919 cp_error (" in instantiation of template `%T'",
10920 current_class_type);
10922 type = error_mark_node;
10929 error ("`%s' is neither function nor method; cannot be declared friend",
10930 IDENTIFIER_POINTER (declarator));
10938 /* Friends are treated specially. */
10939 if (ctype == current_class_type)
10940 warning ("member functions are implicitly friends of their class");
10943 tree t = NULL_TREE;
10944 if (decl && DECL_NAME (decl))
10946 if (template_class_depth (current_class_type) == 0)
10949 = check_explicit_specialization
10951 template_count, 2 * (funcdef_flag != 0) + 4);
10952 if (decl == error_mark_node)
10953 return error_mark_node;
10956 t = do_friend (ctype, declarator, decl,
10957 last_function_parms, flags, quals,
10960 if (t && funcdef_flag)
10963 return void_type_node;
10967 /* Structure field. It may not be a function, except for C++ */
10969 if (decl == NULL_TREE)
10975 /* An attempt is being made to initialize a non-static
10976 member. But, from [class.mem]:
10978 4 A member-declarator can contain a
10979 constant-initializer only if it declares a static
10980 member (_class.static_) of integral or enumeration
10981 type, see _class.static.data_.
10983 This used to be relatively common practice, but
10984 the rest of the compiler does not correctly
10985 handle the initialization unless the member is
10986 static so we make it static below. */
10987 cp_pedwarn ("ANSI C++ forbids initialization of member `%D'",
10989 cp_pedwarn ("making `%D' static", declarator);
10993 if (uses_template_parms (type))
10994 /* We'll check at instantiation time. */
10996 else if (check_static_variable_definition (declarator,
10998 /* If we just return the declaration, crashes
10999 will sometimes occur. We therefore return
11000 void_type_node, as if this was a friend
11001 declaration, to cause callers to completely
11002 ignore this declaration. */
11003 return void_type_node;
11006 /* 9.2p13 [class.mem] */
11007 if (declarator == constructor_name (current_class_type)
11008 /* Divergence from the standard: In extern "C", we
11009 allow non-static data members here, because C does
11010 and /usr/include/netinet/in.h uses that. */
11011 && (staticp || current_lang_name != lang_c))
11012 cp_pedwarn ("ANSI C++ forbids data member `%D' with same name as enclosing class",
11017 /* C++ allows static class members.
11018 All other work for this is done by grokfield.
11019 This VAR_DCL is built by build_lang_field_decl.
11020 All other VAR_DECLs are built by build_decl. */
11021 decl = build_lang_field_decl (VAR_DECL, declarator, type);
11022 TREE_STATIC (decl) = 1;
11023 /* In class context, 'static' means public access. */
11024 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = 1;
11028 decl = build_lang_field_decl (FIELD_DECL, declarator, type);
11029 if (RIDBIT_SETP (RID_MUTABLE, specbits))
11031 DECL_MUTABLE_P (decl) = 1;
11032 RIDBIT_RESET (RID_MUTABLE, specbits);
11036 bad_specifiers (decl, "field", virtualp, quals != NULL_TREE,
11037 inlinep, friendp, raises != NULL_TREE);
11040 else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE)
11042 tree original_name;
11048 if (TREE_CODE (declarator) == TEMPLATE_ID_EXPR)
11049 original_name = dname;
11051 original_name = declarator;
11053 if (RIDBIT_SETP (RID_AUTO, specbits))
11054 error ("storage class `auto' invalid for function `%s'", name);
11055 else if (RIDBIT_SETP (RID_REGISTER, specbits))
11056 error ("storage class `register' invalid for function `%s'", name);
11058 /* Function declaration not at top level.
11059 Storage classes other than `extern' are not allowed
11060 and `extern' makes no difference. */
11061 if (! toplevel_bindings_p ()
11062 && (RIDBIT_SETP (RID_STATIC, specbits)
11063 || RIDBIT_SETP (RID_INLINE, specbits))
11066 if (RIDBIT_SETP (RID_STATIC, specbits))
11067 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name);
11069 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name);
11072 if (ctype == NULL_TREE)
11076 error ("virtual non-class function `%s'", name);
11080 else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2)
11081 type = build_cplus_method_type (ctype, TREE_TYPE (type),
11082 TYPE_ARG_TYPES (type));
11084 /* Record presence of `static'. */
11085 publicp = (ctype != NULL_TREE
11086 || RIDBIT_SETP (RID_EXTERN, specbits)
11087 || !RIDBIT_SETP (RID_STATIC, specbits));
11089 decl = grokfndecl (ctype, type, original_name, declarator,
11090 virtualp, flags, quals, raises, attrlist,
11092 publicp, inlinep, funcdef_flag,
11093 template_count, in_namespace);
11094 if (decl == NULL_TREE)
11097 /* Among other times, could occur from check_explicit_specialization
11098 returning an error_mark_node. */
11099 if (decl == error_mark_node)
11100 return error_mark_node;
11104 int illegal_static = 0;
11106 /* Don't allow a static member function in a class, and forbid
11107 declaring main to be static. */
11108 if (TREE_CODE (type) == METHOD_TYPE)
11110 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl);
11111 illegal_static = 1;
11113 else if (current_function_decl)
11115 /* FIXME need arm citation */
11116 error ("cannot declare static function inside another function");
11117 illegal_static = 1;
11120 if (illegal_static)
11123 RIDBIT_RESET (RID_STATIC, specbits);
11129 /* It's a variable. */
11131 /* An uninitialized decl with `extern' is a reference. */
11132 decl = grokvardecl (type, declarator, &specbits,
11134 (type_quals & TYPE_QUAL_CONST) != 0,
11136 bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE,
11137 inlinep, friendp, raises != NULL_TREE);
11141 DECL_CONTEXT (decl) = ctype;
11144 cp_pedwarn ("static member `%D' re-declared as static", decl);
11146 RIDBIT_RESET (RID_STATIC, specbits);
11148 if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl))
11150 cp_error ("static member `%D' declared `register'", decl);
11151 RIDBIT_RESET (RID_REGISTER, specbits);
11153 if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic)
11155 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
11157 RIDBIT_RESET (RID_EXTERN, specbits);
11162 if (RIDBIT_SETP (RID_MUTABLE, specbits))
11164 error ("`%s' cannot be declared mutable", name);
11167 /* Record `register' declaration for warnings on &
11168 and in case doing stupid register allocation. */
11170 if (RIDBIT_SETP (RID_REGISTER, specbits))
11171 DECL_REGISTER (decl) = 1;
11173 if (RIDBIT_SETP (RID_EXTERN, specbits))
11174 DECL_THIS_EXTERN (decl) = 1;
11176 if (RIDBIT_SETP (RID_STATIC, specbits))
11177 DECL_THIS_STATIC (decl) = 1;
11179 /* Record constancy and volatility. */
11180 /* FIXME: Disallow `restrict' pointer-to-member declarations. */
11181 c_apply_type_quals_to_decl (type_quals, decl);
11187 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
11188 An empty exprlist is a parmlist. An exprlist which
11189 contains only identifiers at the global level
11190 is a parmlist. Otherwise, it is an exprlist. */
11193 parmlist_is_exprlist (exprs)
11196 if (exprs == NULL_TREE || TREE_PARMLIST (exprs))
11199 if (toplevel_bindings_p ())
11201 /* At the global level, if these are all identifiers,
11202 then it is a parmlist. */
11205 if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE)
11207 exprs = TREE_CHAIN (exprs);
11214 /* Subroutine of start_function. Ensure that each of the parameter
11215 types (as listed in PARMS) is complete, as is required for a
11216 function definition. */
11219 require_complete_types_for_parms (parms)
11224 tree type = TREE_TYPE (parms);
11225 if (TYPE_SIZE (complete_type (type)) == NULL_TREE)
11227 if (DECL_NAME (parms))
11228 error ("parameter `%s' has incomplete type",
11229 IDENTIFIER_POINTER (DECL_NAME (parms)));
11231 error ("parameter has incomplete type");
11232 TREE_TYPE (parms) = error_mark_node;
11235 layout_decl (parms, 0);
11237 parms = TREE_CHAIN (parms);
11241 /* Decode the list of parameter types for a function type.
11242 Given the list of things declared inside the parens,
11243 return a list of types.
11245 The list we receive can have three kinds of elements:
11246 an IDENTIFIER_NODE for names given without types,
11247 a TREE_LIST node for arguments given as typespecs or names with typespecs,
11248 or void_type_node, to mark the end of an argument list
11249 when additional arguments are not permitted (... was not used).
11251 FUNCDEF_FLAG is nonzero for a function definition, 0 for
11252 a mere declaration. A nonempty identifier-list gets an error message
11253 when FUNCDEF_FLAG is zero.
11254 If FUNCDEF_FLAG is 1, then parameter types must be complete.
11255 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
11257 If all elements of the input list contain types,
11258 we return a list of the types.
11259 If all elements contain no type (except perhaps a void_type_node
11260 at the end), we return a null list.
11261 If some have types and some do not, it is an error, and we
11262 return a null list.
11264 Also set last_function_parms to either
11265 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
11266 A list of names is converted to a chain of PARM_DECLs
11267 by store_parm_decls so that ultimately it is always a chain of decls.
11269 Note that in C++, parameters can take default values. These default
11270 values are in the TREE_PURPOSE field of the TREE_LIST. It is
11271 an error to specify default values which are followed by parameters
11272 that have no default values, or an ELLIPSES. For simplicities sake,
11273 only parameters which are specified with their types can take on
11277 grokparms (first_parm, funcdef_flag)
11281 tree result = NULL_TREE;
11282 tree decls = NULL_TREE;
11284 if (first_parm != NULL_TREE
11285 && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE)
11287 if (! funcdef_flag)
11288 pedwarn ("parameter names (without types) in function declaration");
11289 last_function_parms = first_parm;
11292 else if (first_parm != NULL_TREE
11293 && TREE_CODE (TREE_VALUE (first_parm)) != TREE_LIST
11294 && TREE_CODE (TREE_VALUE (first_parm)) != VOID_TYPE)
11295 my_friendly_abort (145);
11298 /* Types were specified. This is a list of declarators
11299 each represented as a TREE_LIST node. */
11300 register tree parm, chain;
11301 int any_init = 0, any_error = 0;
11303 if (first_parm != NULL_TREE)
11305 tree last_result = NULL_TREE;
11306 tree last_decl = NULL_TREE;
11308 for (parm = first_parm; parm != NULL_TREE; parm = chain)
11310 tree type = NULL_TREE, list_node = parm;
11311 register tree decl = TREE_VALUE (parm);
11312 tree init = TREE_PURPOSE (parm);
11314 chain = TREE_CHAIN (parm);
11315 /* @@ weak defense against parse errors. */
11316 if (TREE_CODE (decl) != VOID_TYPE
11317 && TREE_CODE (decl) != TREE_LIST)
11319 /* Give various messages as the need arises. */
11320 if (TREE_CODE (decl) == STRING_CST)
11321 cp_error ("invalid string constant `%E'", decl);
11322 else if (TREE_CODE (decl) == INTEGER_CST)
11323 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
11327 if (TREE_CODE (decl) != VOID_TYPE)
11329 decl = grokdeclarator (TREE_VALUE (decl),
11330 TREE_PURPOSE (decl),
11331 PARM, init != NULL_TREE,
11333 if (! decl || TREE_TYPE (decl) == error_mark_node)
11336 /* Top-level qualifiers on the parameters are
11337 ignored for function types. */
11338 type = TYPE_MAIN_VARIANT (TREE_TYPE (decl));
11340 if (TREE_CODE (type) == VOID_TYPE)
11341 decl = void_type_node;
11342 else if (TREE_CODE (type) == METHOD_TYPE)
11344 if (DECL_NAME (decl))
11345 /* Cannot use the decl here because
11346 we don't have DECL_CONTEXT set up yet. */
11347 cp_error ("parameter `%D' invalidly declared method type",
11350 error ("parameter invalidly declared method type");
11351 type = build_pointer_type (type);
11352 TREE_TYPE (decl) = type;
11354 else if (TREE_CODE (type) == OFFSET_TYPE)
11356 if (DECL_NAME (decl))
11357 cp_error ("parameter `%D' invalidly declared offset type",
11360 error ("parameter invalidly declared offset type");
11361 type = build_pointer_type (type);
11362 TREE_TYPE (decl) = type;
11364 else if (TREE_CODE (type) == RECORD_TYPE
11365 && TYPE_LANG_SPECIFIC (type)
11366 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
11368 abstract_virtuals_error (decl, type);
11369 any_error = 1; /* Seems like a good idea. */
11371 else if (TREE_CODE (type) == RECORD_TYPE
11372 && TYPE_LANG_SPECIFIC (type)
11373 && IS_SIGNATURE (type))
11375 signature_error (decl, type);
11376 any_error = 1; /* Seems like a good idea. */
11378 else if (POINTER_TYPE_P (type))
11381 while (POINTER_TYPE_P (t)
11382 || (TREE_CODE (t) == ARRAY_TYPE
11383 && TYPE_DOMAIN (t) != NULL_TREE))
11385 if (TREE_CODE (t) == ARRAY_TYPE)
11386 cp_error ("parameter type `%T' includes %s to array of unknown bound",
11388 TYPE_PTR_P (type) ? "pointer" : "reference");
11392 if (TREE_CODE (decl) == VOID_TYPE)
11394 if (result == NULL_TREE)
11396 result = void_list_node;
11397 last_result = result;
11401 TREE_CHAIN (last_result) = void_list_node;
11402 last_result = void_list_node;
11405 && (chain != void_list_node || TREE_CHAIN (chain)))
11406 error ("`void' in parameter list must be entire list");
11410 /* Since there is a prototype, args are passed in their own types. */
11411 DECL_ARG_TYPE (decl) = TREE_TYPE (decl);
11412 #ifdef PROMOTE_PROTOTYPES
11413 if ((TREE_CODE (type) == INTEGER_TYPE
11414 || TREE_CODE (type) == ENUMERAL_TYPE)
11415 && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
11416 DECL_ARG_TYPE (decl) = integer_type_node;
11423 if (TREE_CODE (init) == SAVE_EXPR)
11424 PARM_DECL_EXPR (init) = 1;
11425 else if (processing_template_decl)
11427 /* Unparsed default arg from in-class decl. */
11428 else if (TREE_CODE (init) == DEFAULT_ARG)
11430 else if (TREE_CODE (init) == PARM_DECL
11431 || TREE_CODE (init) == VAR_DECL)
11433 if (TREE_CODE (init) == VAR_DECL
11434 && (IDENTIFIER_VALUE (DECL_NAME (init))
11437 (IDENTIFIER_BINDING (DECL_NAME
11440 /* ``Local variables may not be used in
11441 default argument expressions.''
11442 dpANSI C++ 8.2.6 */
11444 cp_error ("local variable `%D' may not be used as a default argument", init);
11447 else if (TREE_READONLY_DECL_P (init))
11448 init = decl_constant_value (init);
11450 else if (TREE_TYPE (init) == NULL_TREE)
11452 error ("argument list may not have an initializer list");
11453 init = error_mark_node;
11456 if (! processing_template_decl
11457 && init != error_mark_node
11458 && TREE_CODE (init) != DEFAULT_ARG
11459 && ! can_convert_arg (type, TREE_TYPE (init), init))
11460 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
11461 TREE_TYPE (init), decl);
11467 if (decls == NULL_TREE)
11474 TREE_CHAIN (last_decl) = decl;
11477 if (! current_function_decl && TREE_PERMANENT (list_node))
11479 TREE_PURPOSE (list_node) = init;
11480 TREE_VALUE (list_node) = type;
11481 TREE_CHAIN (list_node) = NULL_TREE;
11484 list_node = saveable_tree_cons (init, type, NULL_TREE);
11485 if (result == NULL_TREE)
11487 result = list_node;
11488 last_result = result;
11492 TREE_CHAIN (last_result) = list_node;
11493 last_result = list_node;
11497 TREE_CHAIN (last_result) = NULL_TREE;
11498 /* If there are no parameters, and the function does not end
11499 with `...', then last_decl will be NULL_TREE. */
11500 if (last_decl != NULL_TREE)
11501 TREE_CHAIN (last_decl) = NULL_TREE;
11505 last_function_parms = decls;
11510 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
11511 FUNCTION_TYPE with the newly parsed version of its default argument, which
11512 was previously digested as text. See snarf_defarg et al in lex.c. */
11515 replace_defarg (arg, init)
11518 if (! processing_template_decl
11519 && ! can_convert_arg (TREE_VALUE (arg), TREE_TYPE (init), init))
11520 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
11521 TREE_TYPE (init), TREE_VALUE (arg));
11522 TREE_PURPOSE (arg) = init;
11529 tree t = FUNCTION_ARG_CHAIN (d);
11530 if (DECL_CONSTRUCTOR_P (d)
11531 && TYPE_USES_VIRTUAL_BASECLASSES (DECL_CONTEXT (d)))
11532 t = TREE_CHAIN (t);
11533 if (t && TREE_CODE (TREE_VALUE (t)) == REFERENCE_TYPE
11534 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t)))
11535 == DECL_CLASS_CONTEXT (d))
11536 && (TREE_CHAIN (t) == NULL_TREE
11537 || TREE_CHAIN (t) == void_list_node
11538 || TREE_PURPOSE (TREE_CHAIN (t))))
11543 /* These memoizing functions keep track of special properties which
11544 a class may have. `grok_ctor_properties' notices whether a class
11545 has a constructor of the form X(X&), and also complains
11546 if the class has a constructor of the form X(X).
11547 `grok_op_properties' takes notice of the various forms of
11548 operator= which are defined, as well as what sorts of type conversion
11549 may apply. Both functions take a FUNCTION_DECL as an argument. */
11552 grok_ctor_properties (ctype, decl)
11555 tree parmtypes = FUNCTION_ARG_CHAIN (decl);
11556 tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node;
11558 /* When a type has virtual baseclasses, a magical first int argument is
11559 added to any ctor so we can tell if the class has been initialized
11560 yet. This could screw things up in this function, so we deliberately
11561 ignore the leading int if we're in that situation. */
11562 if (TYPE_USES_VIRTUAL_BASECLASSES (ctype))
11564 my_friendly_assert (parmtypes
11565 && TREE_VALUE (parmtypes) == integer_type_node,
11567 parmtypes = TREE_CHAIN (parmtypes);
11568 parmtype = TREE_VALUE (parmtypes);
11573 A non-template constructor for class X is a copy constructor if
11574 its first parameter is of type X&, const X&, volatile X& or const
11575 volatile X&, and either there are no other parameters or else all
11576 other parameters have default arguments. */
11577 if (TREE_CODE (parmtype) == REFERENCE_TYPE
11578 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype
11579 && (TREE_CHAIN (parmtypes) == NULL_TREE
11580 || TREE_CHAIN (parmtypes) == void_list_node
11581 || TREE_PURPOSE (TREE_CHAIN (parmtypes)))
11582 && !(DECL_TEMPLATE_INSTANTIATION (decl)
11583 && is_member_template (DECL_TI_TEMPLATE (decl))))
11585 TYPE_HAS_INIT_REF (ctype) = 1;
11586 if (CP_TYPE_CONST_P (TREE_TYPE (parmtype)))
11587 TYPE_HAS_CONST_INIT_REF (ctype) = 1;
11591 A declaration of a constructor for a class X is ill-formed if its
11592 first parameter is of type (optionally cv-qualified) X and either
11593 there are no other parameters or else all other parameters have
11596 We *don't* complain about member template instantiations that
11597 have this form, though; they can occur as we try to decide what
11598 constructor to use during overload resolution. Since overload
11599 resolution will never prefer such a constructor to the
11600 non-template copy constructor (which is either explicitly or
11601 implicitly defined), there's no need to worry about their
11602 existence. Theoretically, they should never even be
11603 instantiated, but that's hard to forestall. */
11604 else if (TYPE_MAIN_VARIANT (parmtype) == ctype
11605 && (TREE_CHAIN (parmtypes) == NULL_TREE
11606 || TREE_CHAIN (parmtypes) == void_list_node
11607 || TREE_PURPOSE (TREE_CHAIN (parmtypes)))
11608 && !(DECL_TEMPLATE_INSTANTIATION (decl)
11609 && is_member_template (DECL_TI_TEMPLATE (decl))))
11611 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
11613 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype);
11616 else if (TREE_CODE (parmtype) == VOID_TYPE
11617 || TREE_PURPOSE (parmtypes) != NULL_TREE)
11618 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1;
11623 /* An operator with this name can be either unary or binary. */
11629 return (name == ansi_opname [(int) INDIRECT_REF]
11630 || name == ansi_opname [(int) ADDR_EXPR]
11631 || name == ansi_opname [(int) NEGATE_EXPR]
11632 || name == ansi_opname[(int) POSTINCREMENT_EXPR]
11633 || name == ansi_opname[(int) POSTDECREMENT_EXPR]
11634 || name == ansi_opname [(int) CONVERT_EXPR]);
11637 /* An operator with this name can only be unary. */
11643 return (name == ansi_opname [(int) TRUTH_NOT_EXPR]
11644 || name == ansi_opname [(int) BIT_NOT_EXPR]
11645 || name == ansi_opname [(int) COMPONENT_REF]
11646 || OPERATOR_TYPENAME_P (name));
11649 /* Do a little sanity-checking on how they declared their operator. */
11652 grok_op_properties (decl, virtualp, friendp)
11654 int virtualp, friendp;
11656 tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
11657 int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
11658 tree name = DECL_NAME (decl);
11660 if (current_class_type == NULL_TREE)
11667 A user-declared copy assignment operator X::operator= is a
11668 non-static non-template member function of class X with
11669 exactly one parameter of type X, X&, const X&, volatile X& or
11670 const volatile X&. */
11671 if (name == ansi_opname[(int) MODIFY_EXPR]
11672 && !(DECL_TEMPLATE_INSTANTIATION (decl)
11673 && is_member_template (DECL_TI_TEMPLATE (decl))))
11674 TYPE_HAS_ASSIGNMENT (current_class_type) = 1;
11675 else if (name == ansi_opname[(int) CALL_EXPR])
11676 TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1;
11677 else if (name == ansi_opname[(int) ARRAY_REF])
11678 TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1;
11679 else if (name == ansi_opname[(int) COMPONENT_REF]
11680 || name == ansi_opname[(int) MEMBER_REF])
11681 TYPE_OVERLOADS_ARROW (current_class_type) = 1;
11682 else if (name == ansi_opname[(int) NEW_EXPR])
11683 TYPE_GETS_NEW (current_class_type) |= 1;
11684 else if (name == ansi_opname[(int) DELETE_EXPR])
11685 TYPE_GETS_DELETE (current_class_type) |= 1;
11686 else if (name == ansi_opname[(int) VEC_NEW_EXPR])
11687 TYPE_GETS_NEW (current_class_type) |= 2;
11688 else if (name == ansi_opname[(int) VEC_DELETE_EXPR])
11689 TYPE_GETS_DELETE (current_class_type) |= 2;
11692 if (name == ansi_opname[(int) NEW_EXPR]
11693 || name == ansi_opname[(int) VEC_NEW_EXPR])
11695 /* When the compiler encounters the definition of A::operator new, it
11696 doesn't look at the class declaration to find out if it's static. */
11698 revert_static_member_fn (&decl, NULL, NULL);
11700 /* Take care of function decl if we had syntax errors. */
11701 if (argtypes == NULL_TREE)
11703 = build_function_type (ptr_type_node,
11704 hash_tree_chain (integer_type_node,
11707 TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
11709 else if (name == ansi_opname[(int) DELETE_EXPR]
11710 || name == ansi_opname[(int) VEC_DELETE_EXPR])
11713 revert_static_member_fn (&decl, NULL, NULL);
11715 if (argtypes == NULL_TREE)
11717 = build_function_type (void_type_node,
11718 hash_tree_chain (ptr_type_node,
11722 TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
11724 if (! friendp && name == ansi_opname[(int) VEC_DELETE_EXPR]
11725 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)))
11726 != void_list_node))
11727 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type) = 1;
11732 /* An operator function must either be a non-static member function
11733 or have at least one parameter of a class, a reference to a class,
11734 an enumeration, or a reference to an enumeration. 13.4.0.6 */
11735 if (! methodp || DECL_STATIC_FUNCTION_P (decl))
11737 if (OPERATOR_TYPENAME_P (name)
11738 || name == ansi_opname[(int) CALL_EXPR]
11739 || name == ansi_opname[(int) MODIFY_EXPR]
11740 || name == ansi_opname[(int) COMPONENT_REF]
11741 || name == ansi_opname[(int) ARRAY_REF])
11742 cp_error ("`%D' must be a nonstatic member function", decl);
11747 if (DECL_STATIC_FUNCTION_P (decl))
11748 cp_error ("`%D' must be either a non-static member function or a non-member function", decl);
11751 for (; TREE_CODE (TREE_VALUE (p)) != VOID_TYPE ; p = TREE_CHAIN (p))
11753 tree arg = TREE_VALUE (p);
11754 if (TREE_CODE (arg) == REFERENCE_TYPE)
11755 arg = TREE_TYPE (arg);
11757 /* This lets bad template code slip through. */
11758 if (IS_AGGR_TYPE (arg)
11759 || TREE_CODE (arg) == ENUMERAL_TYPE
11760 || TREE_CODE (arg) == TEMPLATE_TYPE_PARM
11761 || TREE_CODE (arg) == TEMPLATE_TEMPLATE_PARM)
11765 ("`%D' must have an argument of class or enumerated type",
11772 if (name == ansi_opname[(int) CALL_EXPR])
11773 return; /* No restrictions on args. */
11775 if (IDENTIFIER_TYPENAME_P (name) && ! DECL_TEMPLATE_INFO (decl))
11777 tree t = TREE_TYPE (name);
11778 if (TREE_CODE (t) == VOID_TYPE)
11779 pedwarn ("void is not a valid type conversion operator");
11780 else if (! friendp)
11782 int ref = (TREE_CODE (t) == REFERENCE_TYPE);
11785 t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
11787 if (t == current_class_type)
11788 what = "the same type";
11789 /* Don't force t to be complete here. */
11790 else if (IS_AGGR_TYPE (t)
11792 && DERIVED_FROM_P (t, current_class_type))
11793 what = "a base class";
11796 warning ("conversion to %s%s will never use a type conversion operator",
11797 ref ? "a reference to " : "", what);
11801 if (name == ansi_opname[(int) MODIFY_EXPR])
11805 if (list_length (argtypes) != 3 && methodp)
11807 cp_error ("`%D' must take exactly one argument", decl);
11810 parmtype = TREE_VALUE (TREE_CHAIN (argtypes));
11812 if (copy_assignment_arg_p (parmtype, virtualp)
11815 TYPE_HAS_ASSIGN_REF (current_class_type) = 1;
11816 if (TREE_CODE (parmtype) != REFERENCE_TYPE
11817 || CP_TYPE_CONST_P (TREE_TYPE (parmtype)))
11818 TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1;
11821 else if (name == ansi_opname[(int) COND_EXPR])
11824 pedwarn ("ANSI C++ prohibits overloading operator ?:");
11825 if (list_length (argtypes) != 4)
11826 cp_error ("`%D' must take exactly three arguments", decl);
11828 else if (ambi_op_p (name))
11830 if (list_length (argtypes) == 2)
11832 else if (list_length (argtypes) == 3)
11834 if ((name == ansi_opname[(int) POSTINCREMENT_EXPR]
11835 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
11836 && ! processing_template_decl
11837 && TREE_VALUE (TREE_CHAIN (argtypes)) != integer_type_node)
11840 cp_error ("postfix `%D' must take `int' as its argument",
11844 ("postfix `%D' must take `int' as its second argument",
11851 cp_error ("`%D' must take either zero or one argument", decl);
11853 cp_error ("`%D' must take either one or two arguments", decl);
11856 /* More Effective C++ rule 6. */
11858 && (name == ansi_opname[(int) POSTINCREMENT_EXPR]
11859 || name == ansi_opname[(int) POSTDECREMENT_EXPR]))
11861 tree arg = TREE_VALUE (argtypes);
11862 tree ret = TREE_TYPE (TREE_TYPE (decl));
11863 if (methodp || TREE_CODE (arg) == REFERENCE_TYPE)
11864 arg = TREE_TYPE (arg);
11865 arg = TYPE_MAIN_VARIANT (arg);
11866 if (list_length (argtypes) == 2)
11868 if (TREE_CODE (ret) != REFERENCE_TYPE
11869 || !same_type_p (TYPE_MAIN_VARIANT (TREE_TYPE (ret)),
11871 cp_warning ("prefix `%D' should return `%T'", decl,
11872 build_reference_type (arg));
11876 if (!same_type_p (TYPE_MAIN_VARIANT (ret), arg))
11877 cp_warning ("postfix `%D' should return `%T'", decl, arg);
11881 else if (unary_op_p (name))
11883 if (list_length (argtypes) != 2)
11886 cp_error ("`%D' must take `void'", decl);
11888 cp_error ("`%D' must take exactly one argument", decl);
11891 else /* if (binary_op_p (name)) */
11893 if (list_length (argtypes) != 3)
11896 cp_error ("`%D' must take exactly one argument", decl);
11898 cp_error ("`%D' must take exactly two arguments", decl);
11901 /* More Effective C++ rule 7. */
11903 && (name == ansi_opname [TRUTH_ANDIF_EXPR]
11904 || name == ansi_opname [TRUTH_ORIF_EXPR]
11905 || name == ansi_opname [COMPOUND_EXPR]))
11906 cp_warning ("user-defined `%D' always evaluates both arguments",
11910 /* Effective C++ rule 23. */
11912 && list_length (argtypes) == 3
11913 && (name == ansi_opname [PLUS_EXPR]
11914 || name == ansi_opname [MINUS_EXPR]
11915 || name == ansi_opname [TRUNC_DIV_EXPR]
11916 || name == ansi_opname [MULT_EXPR])
11917 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl))) == REFERENCE_TYPE)
11918 cp_warning ("`%D' should return by value", decl);
11922 for (; argtypes != void_list_node ; argtypes = TREE_CHAIN (argtypes))
11923 if (TREE_PURPOSE (argtypes))
11925 TREE_PURPOSE (argtypes) = NULL_TREE;
11926 if (name == ansi_opname[(int) POSTINCREMENT_EXPR]
11927 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
11930 cp_pedwarn ("`%D' cannot have default arguments", decl);
11933 cp_error ("`%D' cannot have default arguments", decl);
11940 enum tag_types code;
11952 case signature_type:
11953 return "signature";
11955 my_friendly_abort (981122);
11959 /* Get the struct, enum or union (CODE says which) with tag NAME.
11960 Define the tag as a forward-reference if it is not defined.
11962 C++: If a class derivation is given, process it here, and report
11963 an error if multiple derivation declarations are not identical.
11965 If this is a definition, come in through xref_tag and only look in
11966 the current frame for the name (since C++ allows new names in any
11970 xref_tag (code_type_node, name, globalize)
11971 tree code_type_node;
11975 enum tag_types tag_code;
11976 enum tree_code code;
11978 register tree ref, t;
11979 struct binding_level *b = inner_binding_level;
11981 tree attributes = NULL_TREE;
11983 /* If we are called from the parser, code_type_node will sometimes be a
11984 TREE_LIST. This indicates that the user wrote
11985 "class __attribute__ ((foo)) bar". Extract the attributes so we can
11987 if (TREE_CODE (code_type_node) == TREE_LIST)
11989 attributes = TREE_PURPOSE (code_type_node);
11990 code_type_node = TREE_VALUE (code_type_node);
11993 tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
11998 case signature_type:
11999 code = RECORD_TYPE;
12005 code = ENUMERAL_TYPE;
12008 my_friendly_abort (18);
12011 /* If a cross reference is requested, look up the type
12012 already defined for this tag and return it. */
12013 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
12016 name = TYPE_IDENTIFIER (t);
12020 t = IDENTIFIER_TYPE_VALUE (name);
12022 if (t && TREE_CODE (t) != code && TREE_CODE (t) != TEMPLATE_TYPE_PARM
12023 && TREE_CODE (t) != TEMPLATE_TEMPLATE_PARM)
12028 /* If we know we are defining this tag, only look it up in
12029 this scope and don't try to find it as a type. */
12030 ref = lookup_tag (code, name, b, 1);
12034 if (current_class_type
12035 && template_class_depth (current_class_type)
12036 && PROCESSING_REAL_TEMPLATE_DECL_P ())
12037 /* Since GLOBALIZE is non-zero, we are not looking at a
12038 definition of this tag. Since, in addition, we are currently
12039 processing a (member) template declaration of a template
12040 class, we don't want to do any lookup at all; consider:
12047 { template <class V>
12048 friend struct S1; };
12050 Here, the S2::S1 declaration should not be confused with the
12051 outer declaration. In particular, the inner version should
12052 have a template parameter of level 2, not level 1. This
12053 would be particularly important if the member declaration
12056 template <class V = U> friend struct S1;
12058 say, when we should tsubst into `U' when instantiating S2. */
12064 if (t != TYPE_MAIN_VARIANT (t))
12065 cp_pedwarn ("using typedef-name `%D' after `%s'",
12066 TYPE_NAME (t), tag_name (tag_code));
12070 ref = lookup_tag (code, name, b, 0);
12074 /* Try finding it as a type declaration. If that wins,
12076 ref = lookup_name (name, 1);
12078 if (ref != NULL_TREE
12079 && processing_template_decl
12080 && DECL_CLASS_TEMPLATE_P (ref)
12081 && template_class_depth (current_class_type) == 0)
12082 /* Since GLOBALIZE is true, we're declaring a global
12083 template, so we want this type. */
12084 ref = DECL_RESULT (ref);
12086 if (ref && TREE_CODE (ref) == TYPE_DECL
12087 && TREE_CODE (TREE_TYPE (ref)) == code)
12088 ref = TREE_TYPE (ref);
12095 push_obstacks_nochange ();
12099 /* If no such tag is yet defined, create a forward-reference node
12100 and record it as the "definition".
12101 When a real declaration of this type is found,
12102 the forward-reference will be altered into a real type. */
12104 /* In C++, since these migrate into the global scope, we must
12105 build them on the permanent obstack. */
12107 temp = allocation_temporary_p ();
12109 end_temporary_allocation ();
12111 if (code == ENUMERAL_TYPE)
12113 cp_error ("use of enum `%#D' without previous declaration", name);
12115 ref = make_node (ENUMERAL_TYPE);
12117 /* Give the type a default layout like unsigned int
12118 to avoid crashing if it does not get defined. */
12119 TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node);
12120 TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node);
12121 TREE_UNSIGNED (ref) = 1;
12122 TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node);
12123 TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node);
12124 TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node);
12126 /* Enable us to recognize when a type is created in class context.
12127 To do nested classes correctly, this should probably be cleared
12128 out when we leave this classes scope. Currently this in only
12129 done in `start_enum'. */
12131 pushtag (name, ref, globalize);
12135 struct binding_level *old_b = class_binding_level;
12137 ref = make_lang_type (code);
12139 if (tag_code == signature_type)
12141 SET_SIGNATURE (ref);
12142 /* Since a signature type will be turned into the type
12143 of signature tables, it's not only an interface. */
12144 CLASSTYPE_INTERFACE_ONLY (ref) = 0;
12145 SET_CLASSTYPE_INTERFACE_KNOWN (ref);
12146 /* A signature doesn't have a vtable. */
12147 CLASSTYPE_VTABLE_NEEDS_WRITING (ref) = 0;
12150 #ifdef NONNESTED_CLASSES
12151 /* Class types don't nest the way enums do. */
12152 class_binding_level = (struct binding_level *)0;
12154 pushtag (name, ref, globalize);
12155 class_binding_level = old_b;
12160 /* If it no longer looks like a nested type, make sure it's
12162 If it is not an IDENTIFIER, this is not a declaration */
12163 if (b->namespace_p && !class_binding_level
12164 && TREE_CODE (name) == IDENTIFIER_NODE)
12166 if (IDENTIFIER_NAMESPACE_VALUE (name) == NULL_TREE)
12167 SET_IDENTIFIER_NAMESPACE_VALUE (name, TYPE_NAME (ref));
12170 if (!globalize && processing_template_decl && IS_AGGR_TYPE (ref))
12171 redeclare_class_template (ref, current_template_parms);
12174 /* Until the type is defined, tentatively accept whatever
12175 structure tag the user hands us. */
12176 if (TYPE_SIZE (ref) == NULL_TREE
12177 && ref != current_class_type
12178 /* Have to check this, in case we have contradictory tag info. */
12179 && IS_AGGR_TYPE_CODE (TREE_CODE (ref)))
12181 if (tag_code == class_type)
12182 CLASSTYPE_DECLARED_CLASS (ref) = 1;
12183 else if (tag_code == record_type || tag_code == signature_type)
12184 CLASSTYPE_DECLARED_CLASS (ref) = 0;
12189 TREE_TYPE (ref) = attributes;
12191 if (ref && TYPE_P (ref))
12195 If the identifier resolves to a typedef-name or a template
12196 type-parameter, the elaborated-type-specifier is
12198 if (TYPE_LANG_SPECIFIC (ref) && TYPE_WAS_ANONYMOUS (ref))
12199 cp_error ("`%T' is a typedef name", ref);
12200 else if (TREE_CODE (ref) == TEMPLATE_TYPE_PARM)
12201 cp_error ("`%T' is a template type paramter", ref);
12208 xref_tag_from_type (old, id, globalize)
12212 tree code_type_node;
12214 if (TREE_CODE (old) == RECORD_TYPE)
12215 code_type_node = (CLASSTYPE_DECLARED_CLASS (old)
12216 ? class_type_node : record_type_node);
12218 code_type_node = union_type_node;
12220 if (id == NULL_TREE)
12221 id = TYPE_IDENTIFIER (old);
12223 return xref_tag (code_type_node, id, globalize);
12227 xref_basetypes (code_type_node, name, ref, binfo)
12228 tree code_type_node;
12232 /* In the declaration `A : X, Y, ... Z' we mark all the types
12233 (A, X, Y, ..., Z) so we can check for duplicates. */
12236 enum tag_types tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
12238 if (tag_code == union_type)
12240 cp_error ("derived union `%T' invalid", ref);
12244 len = list_length (binfo);
12245 push_obstacks (TYPE_OBSTACK (ref), TYPE_OBSTACK (ref));
12247 SET_CLASSTYPE_MARKED (ref);
12248 BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len);
12250 for (i = 0; binfo; binfo = TREE_CHAIN (binfo))
12252 /* The base of a derived struct is public by default. */
12254 = (TREE_PURPOSE (binfo) == access_public_node
12255 || TREE_PURPOSE (binfo) == access_public_virtual_node
12256 || (tag_code != class_type
12257 && (TREE_PURPOSE (binfo) == access_default_node
12258 || TREE_PURPOSE (binfo) == access_default_virtual_node)));
12260 = (TREE_PURPOSE (binfo) == access_protected_node
12261 || TREE_PURPOSE (binfo) == access_protected_virtual_node);
12263 = (TREE_PURPOSE (binfo) == access_private_virtual_node
12264 || TREE_PURPOSE (binfo) == access_protected_virtual_node
12265 || TREE_PURPOSE (binfo) == access_public_virtual_node
12266 || TREE_PURPOSE (binfo) == access_default_virtual_node);
12267 tree basetype = TREE_VALUE (binfo);
12270 if (basetype && TREE_CODE (basetype) == TYPE_DECL)
12271 basetype = TREE_TYPE (basetype);
12273 || (TREE_CODE (basetype) != RECORD_TYPE
12274 && TREE_CODE (basetype) != TYPENAME_TYPE
12275 && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM
12276 && TREE_CODE (basetype) != TEMPLATE_TEMPLATE_PARM))
12278 cp_error ("base type `%T' fails to be a struct or class type",
12279 TREE_VALUE (binfo));
12283 GNU_xref_hier (name, basetype, via_public, via_virtual, 0);
12286 /* This code replaces similar code in layout_basetypes.
12287 We put the complete_type first for implicit `typename'. */
12288 if (TYPE_SIZE (complete_type (basetype)) == NULL_TREE
12289 && ! (current_template_parms && uses_template_parms (basetype)))
12291 cp_error ("base class `%T' has incomplete type", basetype);
12297 if (CLASSTYPE_MARKED (basetype))
12299 if (basetype == ref)
12300 cp_error ("recursive type `%T' undefined", basetype);
12302 cp_error ("duplicate base type `%T' invalid", basetype);
12306 if (TYPE_FOR_JAVA (basetype)
12307 && current_lang_stack == current_lang_base)
12308 TYPE_FOR_JAVA (ref) = 1;
12310 /* Note that the BINFO records which describe individual
12311 inheritances are *not* shared in the lattice! They
12312 cannot be shared because a given baseclass may be
12313 inherited with different `accessibility' by different
12314 derived classes. (Each BINFO record describing an
12315 individual inheritance contains flags which say what
12316 the `accessibility' of that particular inheritance is.) */
12319 = make_binfo (integer_zero_node, basetype,
12320 CLASS_TYPE_P (basetype)
12321 ? TYPE_BINFO_VTABLE (basetype) : NULL_TREE,
12322 CLASS_TYPE_P (basetype)
12323 ? TYPE_BINFO_VIRTUALS (basetype) : NULL_TREE);
12325 TREE_VEC_ELT (binfos, i) = base_binfo;
12326 TREE_VIA_PUBLIC (base_binfo) = via_public;
12327 TREE_VIA_PROTECTED (base_binfo) = via_protected;
12328 TREE_VIA_VIRTUAL (base_binfo) = via_virtual;
12329 BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref);
12331 /* We need to unshare the binfos now so that lookups during class
12332 definition work. */
12333 unshare_base_binfos (base_binfo);
12335 SET_CLASSTYPE_MARKED (basetype);
12337 /* We are free to modify these bits because they are meaningless
12338 at top level, and BASETYPE is a top-level type. */
12339 if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype))
12341 TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1;
12342 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
12345 if (CLASS_TYPE_P (basetype))
12347 TYPE_GETS_NEW (ref) |= TYPE_GETS_NEW (basetype);
12348 TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
12355 TREE_VEC_LENGTH (binfos) = i;
12357 BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE;
12360 TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1;
12363 tree basetype = BINFO_TYPE (TREE_VEC_ELT (binfos, 0));
12365 if (CLASS_TYPE_P (basetype))
12366 TYPE_USES_MULTIPLE_INHERITANCE (ref)
12367 = TYPE_USES_MULTIPLE_INHERITANCE (basetype);
12370 if (TYPE_USES_MULTIPLE_INHERITANCE (ref))
12371 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
12373 /* Unmark all the types. */
12375 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i)));
12376 CLEAR_CLASSTYPE_MARKED (ref);
12382 /* Begin compiling the definition of an enumeration type.
12383 NAME is its name (or null if anonymous).
12384 Returns the type object, as yet incomplete.
12385 Also records info about it so that build_enumerator
12386 may be used to declare the individual values as they are read. */
12392 register tree enumtype = NULL_TREE;
12393 struct binding_level *b = inner_binding_level;
12395 /* We are wasting space here and putting these on the permanent_obstack so
12396 that typeid(local enum) will work correctly. */
12397 push_obstacks (&permanent_obstack, &permanent_obstack);
12399 /* If this is the real definition for a previous forward reference,
12400 fill in the contents in the same object that used to be the
12401 forward reference. */
12403 if (name != NULL_TREE)
12404 enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1);
12406 if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE)
12407 cp_error ("multiple definition of `%#T'", enumtype);
12410 enumtype = make_node (ENUMERAL_TYPE);
12411 pushtag (name, enumtype, 0);
12414 if (current_class_type)
12415 TREE_ADDRESSABLE (b->tags) = 1;
12417 /* We don't copy this value because build_enumerator needs to do it. */
12418 enum_next_value = integer_zero_node;
12421 GNU_xref_decl (current_function_decl, enumtype);
12425 /* After processing and defining all the values of an enumeration type,
12426 install their decls in the enumeration type and finish it off.
12427 ENUMTYPE is the type object and VALUES a list of name-value pairs.
12428 Returns ENUMTYPE. */
12431 finish_enum (enumtype)
12434 register tree minnode = NULL_TREE, maxnode = NULL_TREE;
12435 /* Calculate the maximum value of any enumerator in this type. */
12437 tree values = TYPE_VALUES (enumtype);
12442 for (pair = values; pair; pair = TREE_CHAIN (pair))
12447 /* The TREE_VALUE is a CONST_DECL for this enumeration
12449 decl = TREE_VALUE (pair);
12451 /* The DECL_INITIAL will be NULL if we are processing a
12452 template declaration and this enumeration constant had no
12453 explicit initializer. */
12454 value = DECL_INITIAL (decl);
12455 if (value && !processing_template_decl)
12457 /* Set the TREE_TYPE for the VALUE as well. That's so
12458 that when we call decl_constant_value we get an
12459 entity of the right type (but with the constant
12460 value). Since we shouldn't ever call
12461 decl_constant_value on a template type, there's no
12462 reason to do that when processing_template_decl.
12463 And, if the expression is something like a
12464 TEMPLATE_PARM_INDEX or a CAST_EXPR doing so will
12465 wreak havoc on the intended type of the expression.
12467 Of course, there's also no point in trying to compute
12468 minimum or maximum values if we're in a template. */
12469 TREE_TYPE (value) = enumtype;
12472 minnode = maxnode = value;
12473 else if (tree_int_cst_lt (maxnode, value))
12475 else if (tree_int_cst_lt (value, minnode))
12479 if (processing_template_decl)
12480 /* If this is just a template, leave the CONST_DECL
12481 alone. That way tsubst_copy will find CONST_DECLs for
12482 CONST_DECLs, and not INTEGER_CSTs. */
12485 /* In the list we're building up, we want the enumeration
12486 values, not the CONST_DECLs. */
12487 TREE_VALUE (pair) = value;
12491 maxnode = minnode = integer_zero_node;
12493 TYPE_VALUES (enumtype) = nreverse (values);
12495 if (processing_template_decl)
12497 tree scope = current_scope ();
12498 if (scope && TREE_CODE (scope) == FUNCTION_DECL)
12499 add_tree (build_min (TAG_DEFN, enumtype));
12503 int unsignedp = tree_int_cst_sgn (minnode) >= 0;
12504 int lowprec = min_precision (minnode, unsignedp);
12505 int highprec = min_precision (maxnode, unsignedp);
12506 int precision = MAX (lowprec, highprec);
12509 TYPE_SIZE (enumtype) = NULL_TREE;
12511 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
12513 TYPE_PRECISION (enumtype) = precision;
12515 fixup_unsigned_type (enumtype);
12517 fixup_signed_type (enumtype);
12519 if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node)))
12520 /* Use the width of the narrowest normal C type which is wide
12522 TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size
12525 TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node);
12527 TYPE_SIZE (enumtype) = 0;
12528 layout_type (enumtype);
12530 /* Fix up all variant types of this enum type. */
12531 for (tem = TYPE_MAIN_VARIANT (enumtype); tem;
12532 tem = TYPE_NEXT_VARIANT (tem))
12534 TYPE_VALUES (tem) = TYPE_VALUES (enumtype);
12535 TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype);
12536 TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype);
12537 TYPE_SIZE (tem) = TYPE_SIZE (enumtype);
12538 TYPE_SIZE_UNIT (tem) = TYPE_SIZE_UNIT (enumtype);
12539 TYPE_MODE (tem) = TYPE_MODE (enumtype);
12540 TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype);
12541 TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype);
12542 TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype);
12545 /* Finish debugging output for this type. */
12546 rest_of_type_compilation (enumtype, namespace_bindings_p ());
12549 /* In start_enum we pushed obstacks. Here, we must pop them. */
12555 /* Build and install a CONST_DECL for an enumeration constant of the
12556 enumeration type TYPE whose NAME and VALUE (if any) are provided.
12557 Assignment of sequential values by default is handled here. */
12560 build_enumerator (name, value, type)
12568 /* Remove no-op casts from the value. */
12570 STRIP_TYPE_NOPS (value);
12572 if (! processing_template_decl)
12574 /* Validate and default VALUE. */
12575 if (value != NULL_TREE)
12577 if (TREE_READONLY_DECL_P (value))
12578 value = decl_constant_value (value);
12580 if (TREE_CODE (value) == INTEGER_CST)
12582 value = default_conversion (value);
12583 constant_expression_warning (value);
12587 cp_error ("enumerator value for `%D' not integer constant", name);
12592 /* Default based on previous value. */
12593 if (value == NULL_TREE && ! processing_template_decl)
12595 value = enum_next_value;
12597 cp_error ("overflow in enumeration values at `%D'", name);
12600 /* Remove no-op casts from the value. */
12602 STRIP_TYPE_NOPS (value);
12604 /* To fix MAX_VAL enum consts. (bkoz) */
12605 TREE_TYPE (value) = integer_type_node;
12609 /* We always have to copy here; not all INTEGER_CSTs are unshared.
12610 Even in other cases, we will later (in finish_enum) be setting the
12612 if (value != NULL_TREE)
12613 value = copy_node (value);
12615 /* C++ associates enums with global, function, or class declarations. */
12617 context = current_scope ();
12618 if (context && context == current_class_type)
12619 /* This enum declaration is local to the class. */
12620 decl = build_lang_field_decl (CONST_DECL, name, type);
12622 /* It's a global enum, or it's local to a function. (Note local to
12623 a function could mean local to a class method. */
12624 decl = build_decl (CONST_DECL, name, type);
12626 DECL_CONTEXT (decl) = FROB_CONTEXT (context);
12627 DECL_INITIAL (decl) = value;
12628 TREE_READONLY (decl) = 1;
12630 if (context && context == current_class_type)
12632 pushdecl_class_level (decl);
12633 /* In something like `struct S { enum E { i = 7 }; };' we put `i'
12634 on the TYPE_FIELDS list for `S'. (That's so that you can say
12635 things like `S::i' later.) */
12636 finish_member_declaration (decl);
12641 GNU_xref_decl (current_function_decl, decl);
12644 if (! processing_template_decl)
12646 /* Set basis for default for next value. */
12647 enum_next_value = build_binary_op_nodefault (PLUS_EXPR, value,
12648 integer_one_node, PLUS_EXPR);
12649 enum_overflow = tree_int_cst_lt (enum_next_value, value);
12652 result = saveable_tree_cons (name, decl, NULL_TREE);
12657 static int function_depth;
12659 /* Create the FUNCTION_DECL for a function definition.
12660 DECLSPECS and DECLARATOR are the parts of the declaration;
12661 they describe the function's name and the type it returns,
12662 but twisted together in a fashion that parallels the syntax of C.
12664 If PRE_PARSED_P is non-zero then DECLARATOR is really the DECL for
12665 the function we are about to process; DECLSPECS are ignored. For
12666 example, we set PRE_PARSED_P when processing the definition of
12667 inline function that was defined in-class; the definition is
12668 actually processed when the class is complete. In this case,
12669 PRE_PARSED_P is 2. We also set PRE_PARSED_P when instanting the
12670 body of a template function, and when constructing thunk functions
12671 and such; in these cases PRE_PARSED_P is 1.
12673 This function creates a binding context for the function body
12674 as well as setting up the FUNCTION_DECL in current_function_decl.
12676 Returns 1 on success. If the DECLARATOR is not suitable for a function
12677 (it defines a datum instead), we return 0, which tells
12678 yyparse to report a parse error.
12680 For C++, we must first check whether that datum makes any sense.
12681 For example, "class A local_a(1,2);" means that variable local_a
12682 is an aggregate of type A, which should have a constructor
12683 applied to it with the argument list [1, 2].
12685 @@ There is currently no way to retrieve the storage
12686 @@ allocated to FUNCTION (or all of its parms) if we return
12687 @@ something we had previously. */
12690 start_function (declspecs, declarator, attrs, pre_parsed_p)
12691 tree declspecs, declarator, attrs;
12695 tree ctype = NULL_TREE;
12698 extern int have_extern_spec;
12699 extern int used_extern_spec;
12700 int doing_friend = 0;
12702 /* Sanity check. */
12703 my_friendly_assert (TREE_CODE (TREE_VALUE (void_list_node)) == VOID_TYPE, 160);
12704 my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161);
12706 /* Assume, until we see it does. */
12707 current_function_returns_value = 0;
12708 current_function_returns_null = 0;
12710 shadowed_labels = 0;
12711 current_function_assigns_this = 0;
12712 current_function_just_assigned_this = 0;
12713 current_function_parms_stored = 0;
12714 original_result_rtx = NULL_RTX;
12715 base_init_expr = NULL_TREE;
12716 current_base_init_list = NULL_TREE;
12717 current_member_init_list = NULL_TREE;
12718 ctor_label = dtor_label = NULL_TREE;
12719 static_labelno = 0;
12721 clear_temp_name ();
12723 /* This should only be done once on the top most decl. */
12724 if (have_extern_spec && !used_extern_spec)
12726 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), declspecs);
12727 used_extern_spec = 1;
12732 decl1 = declarator;
12735 /* What was this testing for, exactly? */
12736 if (! DECL_ARGUMENTS (decl1)
12737 && !DECL_STATIC_FUNCTION_P (decl1)
12738 && !DECL_ARTIFICIAL (decl1)
12739 && DECL_CLASS_SCOPE_P (decl1)
12740 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1))
12741 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1))))
12743 tree binding = binding_for_name (DECL_NAME (decl1),
12744 current_namespace);
12745 cp_error ("redeclaration of `%#D'", decl1);
12746 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)))
12747 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)));
12748 else if (BINDING_VALUE (binding))
12749 cp_error_at ("previous declaration here", BINDING_VALUE (binding));
12753 fntype = TREE_TYPE (decl1);
12754 if (TREE_CODE (fntype) == METHOD_TYPE)
12755 ctype = TYPE_METHOD_BASETYPE (fntype);
12757 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
12758 class is in the (lexical) scope of the class in which it is
12760 if (!ctype && DECL_FRIEND_P (decl1))
12762 ctype = DECL_CLASS_CONTEXT (decl1);
12764 /* CTYPE could be null here if we're dealing with a template;
12765 for example, `inline friend float foo()' inside a template
12766 will have no CTYPE set. */
12767 if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
12773 last_function_parms = DECL_ARGUMENTS (decl1);
12774 last_function_parm_tags = NULL_TREE;
12778 decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL_TREE);
12779 /* If the declarator is not suitable for a function definition,
12780 cause a syntax error. */
12781 if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0;
12783 fntype = TREE_TYPE (decl1);
12785 restype = TREE_TYPE (fntype);
12786 if (CLASS_TYPE_P (restype) && !CLASSTYPE_GOT_SEMICOLON (restype))
12788 cp_error ("semicolon missing after declaration of `%#T'", restype);
12789 shadow_tag (build_expr_list (NULL_TREE, restype));
12790 CLASSTYPE_GOT_SEMICOLON (restype) = 1;
12791 if (TREE_CODE (fntype) == FUNCTION_TYPE)
12792 fntype = build_function_type (integer_type_node,
12793 TYPE_ARG_TYPES (fntype));
12795 fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)),
12797 TYPE_ARG_TYPES (fntype));
12798 TREE_TYPE (decl1) = fntype;
12801 if (TREE_CODE (fntype) == METHOD_TYPE)
12802 ctype = TYPE_METHOD_BASETYPE (fntype);
12803 else if (DECL_MAIN_P (decl1))
12805 /* If this doesn't return integer_type, complain. */
12806 if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node)
12808 if (pedantic || warn_return_type)
12809 pedwarn ("return type for `main' changed to `int'");
12810 TREE_TYPE (decl1) = fntype = default_function_type;
12815 /* Warn if function was previously implicitly declared
12816 (but not if we warned then). */
12817 if (! warn_implicit
12818 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE)
12819 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)));
12821 announce_function (decl1);
12823 /* Set up current_class_type, and enter the scope of the class, if
12826 push_nested_class (ctype, 1);
12827 else if (DECL_STATIC_FUNCTION_P (decl1))
12828 push_nested_class (DECL_CONTEXT (decl1), 2);
12830 /* Now that we have entered the scope of the class, we must restore
12831 the bindings for any template parameters surrounding DECL1, if it
12832 is an inline member template. (Order is important; consider the
12833 case where a template parameter has the same name as a field of
12834 the class.) It is not until after this point that
12835 PROCESSING_TEMPLATE_DECL is guaranteed to be set up correctly. */
12836 if (pre_parsed_p == 2)
12837 maybe_begin_member_template_processing (decl1);
12839 /* We are now in the scope of the function being defined. */
12840 current_function_decl = decl1;
12842 /* Save the parm names or decls from this function's declarator
12843 where store_parm_decls will find them. */
12844 current_function_parms = last_function_parms;
12845 current_function_parm_tags = last_function_parm_tags;
12847 if (! processing_template_decl)
12849 /* In a fcn definition, arg types must be complete. */
12850 require_complete_types_for_parms (DECL_ARGUMENTS (decl1));
12852 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype))) == NULL_TREE)
12854 cp_error ("return-type `%#T' is an incomplete type",
12855 TREE_TYPE (fntype));
12857 /* Make it return void instead, but don't change the
12858 type of the DECL_RESULT, in case we have a named return value. */
12861 = build_cplus_method_type (build_type_variant (ctype,
12862 TREE_READONLY (decl1),
12863 TREE_SIDE_EFFECTS (decl1)),
12865 FUNCTION_ARG_CHAIN (decl1));
12868 = build_function_type (void_type_node,
12869 TYPE_ARG_TYPES (TREE_TYPE (decl1)));
12870 DECL_RESULT (decl1)
12871 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype)));
12872 TREE_READONLY (DECL_RESULT (decl1))
12873 = CP_TYPE_CONST_P (TREE_TYPE (fntype));
12874 TREE_THIS_VOLATILE (DECL_RESULT (decl1))
12875 = CP_TYPE_VOLATILE_P (TREE_TYPE (fntype));
12878 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype))
12879 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype)))
12880 abstract_virtuals_error (decl1, TREE_TYPE (fntype));
12883 /* Effective C++ rule 15. See also c_expand_return. */
12885 && DECL_NAME (decl1) == ansi_opname[(int) MODIFY_EXPR]
12886 && TREE_CODE (TREE_TYPE (fntype)) == VOID_TYPE)
12887 cp_warning ("`operator=' should return a reference to `*this'");
12889 /* Make the init_value nonzero so pushdecl knows this is not tentative.
12890 error_mark_node is replaced below (in poplevel) with the BLOCK. */
12891 DECL_INITIAL (decl1) = error_mark_node;
12893 #ifdef SET_DEFAULT_DECL_ATTRIBUTES
12894 SET_DEFAULT_DECL_ATTRIBUTES (decl1, attrs);
12897 /* This function exists in static storage.
12898 (This does not mean `static' in the C sense!) */
12899 TREE_STATIC (decl1) = 1;
12901 /* We must call push_template_decl after current_class_type is set
12902 up. (If we are processing inline definitions after exiting a
12903 class scope, current_class_type will be NULL_TREE until set above
12904 by push_nested_class.) */
12905 if (processing_template_decl)
12906 decl1 = push_template_decl (decl1);
12908 /* Record the decl so that the function name is defined.
12909 If we already have a decl for this name, and it is a FUNCTION_DECL,
12910 use the old decl. */
12911 if (!processing_template_decl && pre_parsed_p == 0)
12913 /* A specialization is not used to guide overload resolution. */
12914 if ((flag_guiding_decls
12915 || !DECL_TEMPLATE_SPECIALIZATION (decl1))
12916 && ! DECL_FUNCTION_MEMBER_P (decl1))
12917 decl1 = pushdecl (decl1);
12920 /* We need to set the DECL_CONTEXT. */
12921 if (!DECL_CONTEXT (decl1) && DECL_TEMPLATE_INFO (decl1))
12922 DECL_CONTEXT (decl1) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1));
12923 /* And make sure we have enough default args. */
12924 check_default_args (decl1);
12926 DECL_MAIN_VARIANT (decl1) = decl1;
12927 fntype = TREE_TYPE (decl1);
12930 current_function_decl = decl1;
12932 if (DECL_INTERFACE_KNOWN (decl1))
12934 tree ctx = hack_decl_function_context (decl1);
12936 if (DECL_NOT_REALLY_EXTERN (decl1))
12937 DECL_EXTERNAL (decl1) = 0;
12939 if (ctx != NULL_TREE && DECL_THIS_INLINE (ctx)
12940 && TREE_PUBLIC (ctx))
12941 /* This is a function in a local class in an extern inline
12943 comdat_linkage (decl1);
12945 /* If this function belongs to an interface, it is public.
12946 If it belongs to someone else's interface, it is also external.
12947 It doesn't matter whether it's inline or not. */
12948 else if (interface_unknown == 0
12949 && (! DECL_TEMPLATE_INSTANTIATION (decl1)
12950 || flag_alt_external_templates))
12952 if (DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1)
12953 || processing_template_decl)
12954 DECL_EXTERNAL (decl1)
12956 || (DECL_THIS_INLINE (decl1) && ! flag_implement_inlines));
12958 DECL_EXTERNAL (decl1) = 0;
12959 DECL_NOT_REALLY_EXTERN (decl1) = 0;
12960 DECL_INTERFACE_KNOWN (decl1) = 1;
12964 /* This is a definition, not a reference.
12965 So clear DECL_EXTERNAL. */
12966 DECL_EXTERNAL (decl1) = 0;
12968 if ((DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1))
12969 && ! DECL_INTERFACE_KNOWN (decl1)
12970 /* Don't try to defer nested functions for now. */
12971 && ! hack_decl_function_context (decl1))
12972 DECL_DEFER_OUTPUT (decl1) = 1;
12974 DECL_INTERFACE_KNOWN (decl1) = 1;
12977 if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1))
12979 if (TREE_CODE (fntype) == METHOD_TYPE)
12980 TREE_TYPE (decl1) = fntype
12981 = build_function_type (TREE_TYPE (fntype),
12982 TREE_CHAIN (TYPE_ARG_TYPES (fntype)));
12983 current_function_parms = TREE_CHAIN (current_function_parms);
12984 DECL_ARGUMENTS (decl1) = current_function_parms;
12987 restype = TREE_TYPE (fntype);
12991 /* If we're compiling a friend function, neither of the variables
12992 current_class_ptr nor current_class_type will have values. */
12993 if (! doing_friend)
12995 /* We know that this was set up by `grokclassfn'.
12996 We do not wait until `store_parm_decls', since evil
12997 parse errors may never get us to that point. Here
12998 we keep the consistency between `current_class_type'
12999 and `current_class_ptr'. */
13000 tree t = current_function_parms;
13002 my_friendly_assert (t != NULL_TREE
13003 && TREE_CODE (t) == PARM_DECL, 162);
13005 if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE)
13009 if (! hack_decl_function_context (decl1))
13010 temporary_allocation ();
13011 i = suspend_momentary ();
13013 /* Normally, build_indirect_ref returns
13014 current_class_ref whenever current_class_ptr is
13015 dereferenced. This time, however, we want it to
13016 *create* current_class_ref, so we temporarily clear
13017 current_class_ptr to fool it. */
13018 current_class_ptr = NULL_TREE;
13019 current_class_ref = build_indirect_ref (t, NULL_PTR);
13020 current_class_ptr = t;
13022 resume_momentary (i);
13023 if (! hack_decl_function_context (decl1))
13024 end_temporary_allocation ();
13027 /* We're having a signature pointer here. */
13028 current_class_ref = current_class_ptr = t;
13033 current_class_ptr = current_class_ref = NULL_TREE;
13036 current_binding_level->parm_flag = 1;
13038 GNU_xref_function (decl1, current_function_parms);
13041 cplus_decl_attributes (decl1, NULL_TREE, attrs);
13043 make_function_rtl (decl1);
13045 /* Promote the value to int before returning it. */
13046 if (C_PROMOTING_INTEGER_TYPE_P (restype))
13047 restype = type_promotes_to (restype);
13049 /* If this fcn was already referenced via a block-scope `extern' decl
13050 (or an implicit decl), propagate certain information about the usage. */
13051 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1)))
13052 TREE_ADDRESSABLE (decl1) = 1;
13054 if (DECL_RESULT (decl1) == NULL_TREE)
13056 DECL_RESULT (decl1)
13057 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype));
13058 TREE_READONLY (DECL_RESULT (decl1)) = CP_TYPE_CONST_P (restype);
13059 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = CP_TYPE_VOLATILE_P (restype);
13062 /* Allocate further tree nodes temporarily during compilation
13063 of this function only. Tiemann moved up here from bottom of fn. */
13064 /* If this is a nested function, then we must continue to allocate RTL
13065 on the permanent obstack in case we need to inline it later. */
13066 if (! hack_decl_function_context (decl1))
13067 temporary_allocation ();
13069 if (processing_template_decl)
13071 ++minimal_parse_mode;
13072 last_tree = DECL_SAVED_TREE (decl1)
13073 = build_nt (EXPR_STMT, void_zero_node);
13078 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1))
13079 && DECL_LANGUAGE (decl1) == lang_cplusplus)
13081 dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
13082 ctor_label = NULL_TREE;
13086 dtor_label = NULL_TREE;
13087 if (DECL_CONSTRUCTOR_P (decl1))
13088 ctor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
13094 /* Called after store_parm_decls for a function-try-block. We need to update
13095 last_parm_cleanup_insn so that the base initializers for a constructor
13096 are run within this block, not before it. */
13099 expand_start_early_try_stmts ()
13101 expand_start_try_stmts ();
13102 last_parm_cleanup_insn = get_last_insn ();
13105 /* Store the parameter declarations into the current function declaration.
13106 This is called after parsing the parameter declarations, before
13107 digesting the body of the function.
13109 Also install to binding contour return value identifier, if any. */
13112 store_parm_decls ()
13114 register tree fndecl = current_function_decl;
13115 register tree parm;
13116 int parms_have_cleanups = 0;
13117 tree cleanups = NULL_TREE;
13119 /* This is either a chain of PARM_DECLs (when a prototype is used). */
13120 tree specparms = current_function_parms;
13122 /* This is a list of types declared among parms in a prototype. */
13123 tree parmtags = current_function_parm_tags;
13125 /* This is a chain of any other decls that came in among the parm
13126 declarations. If a parm is declared with enum {foo, bar} x;
13127 then CONST_DECLs for foo and bar are put here. */
13128 tree nonparms = NULL_TREE;
13130 if (toplevel_bindings_p ())
13131 fatal ("parse errors have confused me too much");
13133 /* Initialize RTL machinery. */
13134 init_function_start (fndecl, input_filename, lineno);
13136 /* Create a binding level for the parms. */
13137 expand_start_bindings (0);
13139 if (specparms != NULL_TREE)
13141 /* This case is when the function was defined with an ANSI prototype.
13142 The parms already have decls, so we need not do anything here
13143 except record them as in effect
13144 and complain if any redundant old-style parm decls were written. */
13146 register tree next;
13148 /* Must clear this because it might contain TYPE_DECLs declared
13150 storedecls (NULL_TREE);
13152 for (parm = nreverse (specparms); parm; parm = next)
13154 next = TREE_CHAIN (parm);
13155 if (TREE_CODE (parm) == PARM_DECL)
13158 if (DECL_NAME (parm) == NULL_TREE)
13162 else if (TREE_CODE (TREE_TYPE (parm)) == VOID_TYPE)
13163 cp_error ("parameter `%D' declared void", parm);
13166 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
13167 A parameter is assumed not to have any side effects.
13168 If this should change for any reason, then this
13169 will have to wrap the bashed reference type in a save_expr.
13171 Also, if the parameter type is declared to be an X
13172 and there is an X(X&) constructor, we cannot lay it
13173 into the stack (any more), so we make this parameter
13174 look like it is really of reference type. Functions
13175 which pass parameters to this function will know to
13176 create a temporary in their frame, and pass a reference
13179 if (TREE_CODE (TREE_TYPE (parm)) == REFERENCE_TYPE
13180 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm))))
13181 SET_DECL_REFERENCE_SLOT (parm, convert_from_reference (parm));
13185 if (! processing_template_decl
13186 && (cleanup = maybe_build_cleanup (parm), cleanup))
13188 expand_decl (parm);
13189 parms_have_cleanups = 1;
13191 /* Keep track of the cleanups. */
13192 cleanups = tree_cons (parm, cleanup, cleanups);
13197 /* If we find an enum constant or a type tag,
13198 put it aside for the moment. */
13199 TREE_CHAIN (parm) = NULL_TREE;
13200 nonparms = chainon (nonparms, parm);
13204 /* Get the decls in their original chain order
13205 and record in the function. This is all and only the
13206 PARM_DECLs that were pushed into scope by the loop above. */
13207 DECL_ARGUMENTS (fndecl) = getdecls ();
13209 storetags (chainon (parmtags, gettags ()));
13212 DECL_ARGUMENTS (fndecl) = NULL_TREE;
13214 /* Now store the final chain of decls for the arguments
13215 as the decl-chain of the current lexical scope.
13216 Put the enumerators in as well, at the front so that
13217 DECL_ARGUMENTS is not modified. */
13219 storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl)));
13221 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
13222 declare_function_name ();
13224 /* Initialize the RTL code for the function. */
13225 DECL_SAVED_INSNS (fndecl) = NULL_RTX;
13226 if (! processing_template_decl)
13227 expand_function_start (fndecl, parms_have_cleanups);
13229 current_function_parms_stored = 1;
13231 /* If this function is `main', emit a call to `__main'
13232 to run global initializers, etc. */
13233 if (DECL_MAIN_P (fndecl))
13234 expand_main_function ();
13236 /* Now that we have initialized the parms, we can start their
13237 cleanups. We cannot do this before, since expand_decl_cleanup
13238 should not be called before the parm can be used. */
13240 && ! processing_template_decl)
13242 for (cleanups = nreverse (cleanups); cleanups; cleanups = TREE_CHAIN (cleanups))
13244 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups), TREE_VALUE (cleanups)))
13245 cp_error ("parser lost in parsing declaration of `%D'",
13246 TREE_PURPOSE (cleanups));
13250 /* Create a binding contour which can be used to catch
13251 cleanup-generated temporaries. Also, if the return value needs or
13252 has initialization, deal with that now. */
13253 if (parms_have_cleanups)
13256 expand_start_bindings (0);
13259 if (! processing_template_decl && flag_exceptions)
13261 /* Do the starting of the exception specifications, if we have any. */
13262 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
13263 expand_start_eh_spec ();
13266 last_parm_cleanup_insn = get_last_insn ();
13267 last_dtor_insn = get_last_insn ();
13270 /* Bind a name and initialization to the return value of
13271 the current function. */
13274 store_return_init (return_id, init)
13275 tree return_id, init;
13277 tree decl = DECL_RESULT (current_function_decl);
13280 /* Give this error as many times as there are occurrences,
13281 so that users can use Emacs compilation buffers to find
13282 and fix all such places. */
13283 pedwarn ("ANSI C++ does not permit named return values");
13285 if (return_id != NULL_TREE)
13287 if (DECL_NAME (decl) == NULL_TREE)
13289 DECL_NAME (decl) = return_id;
13290 DECL_ASSEMBLER_NAME (decl) = return_id;
13293 cp_error ("return identifier `%D' already in place", decl);
13296 /* Can't let this happen for constructors. */
13297 if (DECL_CONSTRUCTOR_P (current_function_decl))
13299 error ("can't redefine default return value for constructors");
13303 /* If we have a named return value, put that in our scope as well. */
13304 if (DECL_NAME (decl) != NULL_TREE)
13306 /* If this named return value comes in a register,
13307 put it in a pseudo-register. */
13308 if (DECL_REGISTER (decl))
13310 original_result_rtx = DECL_RTL (decl);
13311 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
13314 /* Let `cp_finish_decl' know that this initializer is ok. */
13315 DECL_INITIAL (decl) = init;
13318 if (minimal_parse_mode)
13319 add_tree (build_min_nt (RETURN_INIT, return_id,
13320 copy_to_permanent (init)));
13322 cp_finish_decl (decl, init, NULL_TREE, 0, 0);
13327 /* Finish up a function declaration and compile that function
13328 all the way to assembler language output. The free the storage
13329 for the function definition.
13331 This is called after parsing the body of the function definition.
13332 LINENO is the current line number.
13334 FLAGS is a bitwise or of the following values:
13336 An extra call to poplevel (and expand_end_bindings) must be
13337 made to take care of the binding contour for the base
13338 initializers. This is only relevant for constructors.
13340 We just finished processing the body of an in-class inline
13341 function definition. (This processing will have taken place
13342 after the class definition is complete.)
13344 NESTED is nonzero if we were in the middle of compiling another function
13345 when we started on this one. */
13348 finish_function (lineno, flags, nested)
13353 register tree fndecl = current_function_decl;
13354 tree fntype, ctype = NULL_TREE;
13355 rtx last_parm_insn, insns;
13356 /* Label to use if this function is supposed to return a value. */
13357 tree no_return_label = NULL_TREE;
13358 tree decls = NULL_TREE;
13359 int call_poplevel = (flags & 1) != 0;
13360 int inclass_inline = (flags & 2) != 0;
13363 /* When we get some parse errors, we can end up without a
13364 current_function_decl, so cope. */
13365 if (fndecl == NULL_TREE)
13368 if (! nested && function_depth > 1)
13371 fntype = TREE_TYPE (fndecl);
13373 /* TREE_READONLY (fndecl) = 1;
13374 This caused &foo to be of type ptr-to-const-function
13375 which then got a warning when stored in a ptr-to-function variable. */
13377 /* This happens on strange parse errors. */
13378 if (! current_function_parms_stored)
13381 store_parm_decls ();
13384 if (processing_template_decl)
13386 if (DECL_CONSTRUCTOR_P (fndecl) && call_poplevel)
13388 decls = getdecls ();
13389 expand_end_bindings (decls, decls != NULL_TREE, 0);
13390 poplevel (decls != NULL_TREE, 0, 0);
13395 if (write_symbols != NO_DEBUG /*&& TREE_CODE (fntype) != METHOD_TYPE*/)
13397 tree ttype = target_type (fntype);
13400 if (IS_AGGR_TYPE (ttype))
13401 /* Let debugger know it should output info for this type. */
13402 note_debug_info_needed (ttype);
13404 for (parmdecl = DECL_ARGUMENTS (fndecl); parmdecl; parmdecl = TREE_CHAIN (parmdecl))
13406 ttype = target_type (TREE_TYPE (parmdecl));
13407 if (IS_AGGR_TYPE (ttype))
13408 /* Let debugger know it should output info for this type. */
13409 note_debug_info_needed (ttype);
13413 /* Clean house because we will need to reorder insns here. */
13414 do_pending_stack_adjust ();
13418 tree binfo = TYPE_BINFO (current_class_type);
13419 tree cond = integer_one_node;
13421 tree in_charge_node = lookup_name (in_charge_identifier, 0);
13423 int ok_to_optimize_dtor = 0;
13424 int empty_dtor = get_last_insn () == last_dtor_insn;
13426 if (current_function_assigns_this)
13427 cond = build (NE_EXPR, boolean_type_node,
13428 current_class_ptr, integer_zero_node);
13431 int n_baseclasses = CLASSTYPE_N_BASECLASSES (current_class_type);
13433 /* If this destructor is empty, then we don't need to check
13434 whether `this' is NULL in some cases. */
13435 if ((flag_this_is_variable & 1) == 0)
13436 ok_to_optimize_dtor = 1;
13437 else if (empty_dtor)
13438 ok_to_optimize_dtor
13439 = (n_baseclasses == 0
13440 || (n_baseclasses == 1
13441 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type, 0))));
13444 /* These initializations might go inline. Protect
13445 the binding level of the parms. */
13447 expand_start_bindings (0);
13449 if (current_function_assigns_this)
13451 current_function_assigns_this = 0;
13452 current_function_just_assigned_this = 0;
13455 /* Generate the code to call destructor on base class.
13456 If this destructor belongs to a class with virtual
13457 functions, then set the virtual function table
13458 pointer to represent the type of our base class. */
13460 /* This side-effect makes call to `build_delete' generate the
13461 code we have to have at the end of this destructor.
13462 `build_delete' will set the flag again. */
13463 TYPE_HAS_DESTRUCTOR (current_class_type) = 0;
13465 /* These are two cases where we cannot delegate deletion. */
13466 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)
13467 || TYPE_GETS_REG_DELETE (current_class_type))
13468 exprstmt = build_delete (current_class_type, current_class_ref, integer_zero_node,
13469 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
13471 exprstmt = build_delete (current_class_type, current_class_ref, in_charge_node,
13472 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
13474 /* If we did not assign to this, then `this' is non-zero at
13475 the end of a destructor. As a special optimization, don't
13476 emit test if this is an empty destructor. If it does nothing,
13477 it does nothing. If it calls a base destructor, the base
13478 destructor will perform the test. */
13480 if (exprstmt != error_mark_node
13481 && (TREE_CODE (exprstmt) != NOP_EXPR
13482 || TREE_OPERAND (exprstmt, 0) != integer_zero_node
13483 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)))
13485 expand_label (dtor_label);
13486 if (cond != integer_one_node)
13487 expand_start_cond (cond, 0);
13488 if (exprstmt != void_zero_node)
13489 /* Don't call `expand_expr_stmt' if we're not going to do
13490 anything, since -Wall will give a diagnostic. */
13491 expand_expr_stmt (exprstmt);
13493 /* Run destructor on all virtual baseclasses. */
13494 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
13496 tree vbases = nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type)));
13497 expand_start_cond (build (BIT_AND_EXPR, integer_type_node,
13498 in_charge_node, integer_two_node), 0);
13501 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases)))
13503 tree vb = get_vbase
13504 (BINFO_TYPE (vbases),
13505 TYPE_BINFO (current_class_type));
13507 (build_scoped_method_call
13508 (current_class_ref, vb, dtor_identifier,
13509 build_expr_list (NULL_TREE, integer_zero_node)));
13511 vbases = TREE_CHAIN (vbases);
13513 expand_end_cond ();
13516 do_pending_stack_adjust ();
13517 if (cond != integer_one_node)
13518 expand_end_cond ();
13521 virtual_size = c_sizeof (current_class_type);
13523 /* At the end, call delete if that's what's requested. */
13525 /* FDIS sez: At the point of definition of a virtual destructor
13526 (including an implicit definition), non-placement operator
13527 delete shall be looked up in the scope of the destructor's
13528 class and if found shall be accessible and unambiguous.
13530 This is somewhat unclear, but I take it to mean that if the
13531 class only defines placement deletes we don't do anything here.
13532 So we pass LOOKUP_SPECULATIVELY; delete_sanity will complain
13533 for us if they ever try to delete one of these. */
13535 if (TYPE_GETS_REG_DELETE (current_class_type)
13536 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
13537 exprstmt = build_op_delete_call
13538 (DELETE_EXPR, current_class_ptr, virtual_size,
13539 LOOKUP_NORMAL | LOOKUP_SPECULATIVELY, NULL_TREE);
13541 exprstmt = NULL_TREE;
13545 cond = build (BIT_AND_EXPR, integer_type_node,
13546 in_charge_node, integer_one_node);
13547 expand_start_cond (cond, 0);
13548 expand_expr_stmt (exprstmt);
13549 expand_end_cond ();
13552 /* End of destructor. */
13553 expand_end_bindings (NULL_TREE, getdecls () != NULL_TREE, 0);
13554 poplevel (getdecls () != NULL_TREE, 0, 0);
13556 /* Back to the top of destructor. */
13557 /* Don't execute destructor code if `this' is NULL. */
13561 /* If the dtor is empty, and we know there is not possible way we
13562 could use any vtable entries, before they are possibly set by
13563 a base class dtor, we don't have to setup the vtables, as we
13564 know that any base class dtoring will set up any vtables it
13565 needs. We avoid MI, because one base class dtor can do a
13566 virtual dispatch to an overridden function that would need to
13567 have a non-related vtable set up, we cannot avoid setting up
13568 vtables in that case. We could change this to see if there is
13569 just one vtable. */
13570 if (! empty_dtor || TYPE_USES_COMPLEX_INHERITANCE (current_class_type))
13572 /* Make all virtual function table pointers in non-virtual base
13573 classes point to CURRENT_CLASS_TYPE's virtual function
13575 expand_direct_vtbls_init (binfo, binfo, 1, 0, current_class_ptr);
13577 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
13578 expand_indirect_vtbls_init (binfo, current_class_ref, current_class_ptr);
13581 if (! ok_to_optimize_dtor)
13583 cond = build_binary_op (NE_EXPR,
13584 current_class_ptr, integer_zero_node, 1);
13585 expand_start_cond (cond, 0);
13588 insns = get_insns ();
13591 last_parm_insn = get_first_nonparm_insn ();
13592 if (last_parm_insn == NULL_RTX)
13593 last_parm_insn = get_last_insn ();
13595 last_parm_insn = previous_insn (last_parm_insn);
13597 emit_insns_after (insns, last_parm_insn);
13599 if (! ok_to_optimize_dtor)
13600 expand_end_cond ();
13602 else if (current_function_assigns_this)
13604 /* Does not need to call emit_base_init, because
13605 that is done (if needed) just after assignment to this
13608 if (DECL_CONSTRUCTOR_P (current_function_decl))
13610 end_protect_partials ();
13611 expand_label (ctor_label);
13612 ctor_label = NULL_TREE;
13616 decls = getdecls ();
13617 expand_end_bindings (decls, decls != NULL_TREE, 0);
13618 poplevel (decls != NULL_TREE, 0, 0);
13620 /* c_expand_return knows to return 'this' from a constructor. */
13621 c_expand_return (NULL_TREE);
13623 else if (TREE_CODE (TREE_TYPE (DECL_RESULT (current_function_decl))) != VOID_TYPE
13624 && return_label != NULL_RTX)
13625 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
13627 current_function_assigns_this = 0;
13628 current_function_just_assigned_this = 0;
13629 base_init_expr = NULL_TREE;
13631 else if (DECL_CONSTRUCTOR_P (fndecl))
13633 tree cond = NULL_TREE, thenclause = NULL_TREE;
13634 /* Allow constructor for a type to get a new instance of the object
13635 using `build_new'. */
13636 tree abstract_virtuals = CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type);
13637 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = NULL_TREE;
13639 DECL_RETURNS_FIRST_ARG (fndecl) = 1;
13641 if (flag_this_is_variable > 0)
13643 cond = build_binary_op (EQ_EXPR,
13644 current_class_ptr, integer_zero_node, 1);
13645 thenclause = build_modify_expr (current_class_ptr, NOP_EXPR,
13646 build_new (NULL_TREE, current_class_type, void_type_node, 0));
13649 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = abstract_virtuals;
13653 if (flag_this_is_variable > 0)
13655 expand_start_cond (cond, 0);
13656 expand_expr_stmt (thenclause);
13657 expand_end_cond ();
13660 /* Emit insns from `emit_base_init' which sets up virtual
13661 function table pointer(s). */
13662 if (base_init_expr)
13664 expand_expr_stmt (base_init_expr);
13665 base_init_expr = NULL_TREE;
13668 insns = get_insns ();
13671 /* This is where the body of the constructor begins. */
13673 emit_insns_after (insns, last_parm_cleanup_insn);
13675 end_protect_partials ();
13677 /* This is where the body of the constructor ends. */
13678 expand_label (ctor_label);
13679 ctor_label = NULL_TREE;
13683 decls = getdecls ();
13684 expand_end_bindings (decls, decls != NULL_TREE, 0);
13685 poplevel (decls != NULL_TREE, 1, 0);
13688 /* c_expand_return knows to return 'this' from a constructor. */
13689 c_expand_return (NULL_TREE);
13691 current_function_assigns_this = 0;
13692 current_function_just_assigned_this = 0;
13694 else if (DECL_MAIN_P (fndecl))
13696 /* Make it so that `main' always returns 0 by default. */
13698 c_expand_return (integer_one_node);
13700 c_expand_return (integer_zero_node);
13703 else if (return_label != NULL_RTX
13704 && current_function_return_value == NULL_TREE
13705 && ! DECL_NAME (DECL_RESULT (current_function_decl)))
13706 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
13708 if (flag_exceptions)
13709 expand_exception_blocks ();
13711 /* If this function is supposed to return a value, ensure that
13712 we do not fall into the cleanups by mistake. The end of our
13713 function will look like this:
13715 user code (may have return stmt somewhere)
13716 goto no_return_label
13721 NOTE_INSN_FUNCTION_END
13725 If the user omits a return stmt in the USER CODE section, we
13726 will have a control path which reaches NOTE_INSN_FUNCTION_END.
13727 Otherwise, we won't. */
13728 if (no_return_label)
13730 DECL_CONTEXT (no_return_label) = fndecl;
13731 DECL_INITIAL (no_return_label) = error_mark_node;
13732 DECL_SOURCE_FILE (no_return_label) = input_filename;
13733 DECL_SOURCE_LINE (no_return_label) = lineno;
13734 expand_goto (no_return_label);
13739 /* Remove the binding contour which is used
13740 to catch cleanup-generated temporaries. */
13741 expand_end_bindings (0, 0, 0);
13742 poplevel (0, 0, 0);
13744 /* Emit label at beginning of cleanup code for parameters. */
13745 emit_label (cleanup_label);
13748 /* Get return value into register if that's where it's supposed to be. */
13749 if (original_result_rtx)
13750 fixup_result_decl (DECL_RESULT (fndecl), original_result_rtx);
13752 /* Finish building code that will trigger warnings if users forget
13753 to make their functions return values. */
13754 if (no_return_label || cleanup_label)
13755 emit_jump (return_label);
13756 if (no_return_label)
13758 /* We don't need to call `expand_*_return' here because we
13759 don't need any cleanups here--this path of code is only
13760 for error checking purposes. */
13761 expand_label (no_return_label);
13764 /* Generate rtl for function exit. */
13765 expand_function_end (input_filename, lineno, 1);
13768 /* Must mark the RESULT_DECL as being in this function. */
13769 DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
13771 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
13772 to the FUNCTION_DECL node itself. */
13773 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
13775 /* If we're processing a template, squirrel away the definition
13776 until we do an instantiation. */
13777 if (processing_template_decl)
13779 --minimal_parse_mode;
13780 DECL_SAVED_TREE (fndecl) = TREE_CHAIN (DECL_SAVED_TREE (fndecl));
13781 /* We have to save this value here in case
13782 maybe_end_member_template_processing decides to pop all the
13783 template parameters. */
13789 /* This must come after expand_function_end because cleanups might
13790 have declarations (from inline functions) that need to go into
13791 this function's blocks. */
13792 if (current_binding_level->parm_flag != 1)
13793 my_friendly_abort (122);
13794 poplevel (1, 0, 1);
13796 /* If this is a in-class inline definition, we may have to pop the
13797 bindings for the template parameters that we added in
13798 maybe_begin_member_template_processing when start_function was
13800 if (inclass_inline)
13801 maybe_end_member_template_processing ();
13803 /* Reset scope for C++: if we were in the scope of a class,
13804 then when we finish this function, we are not longer so.
13805 This cannot be done until we know for sure that no more
13806 class members will ever be referenced in this function
13807 (i.e., calls to destructors). */
13808 if (current_class_name)
13810 ctype = current_class_type;
13811 pop_nested_class (1);
13816 int saved_flag_keep_inline_functions =
13817 flag_keep_inline_functions;
13819 /* So we can tell if jump_optimize sets it to 1. */
13822 if (DECL_CONTEXT (fndecl) != NULL_TREE
13823 && hack_decl_function_context (fndecl))
13824 /* Trick rest_of_compilation into not deferring output of this
13825 function, even if it is inline, since the rtl_obstack for
13826 this function is the function_obstack of the enclosing
13827 function and will be deallocated when the enclosing
13828 function is gone. See save_tree_status. */
13829 flag_keep_inline_functions = 1;
13831 /* Run the optimizers and output the assembler code for this
13834 if (DECL_ARTIFICIAL (fndecl))
13836 /* Do we really *want* to inline this synthesized method? */
13838 int save_fif = flag_inline_functions;
13839 flag_inline_functions = 1;
13841 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
13842 will check our size. */
13843 DECL_INLINE (fndecl) = 0;
13845 rest_of_compilation (fndecl);
13846 flag_inline_functions = save_fif;
13849 rest_of_compilation (fndecl);
13851 flag_keep_inline_functions = saved_flag_keep_inline_functions;
13853 if (DECL_SAVED_INSNS (fndecl) && ! TREE_ASM_WRITTEN (fndecl))
13855 /* Set DECL_EXTERNAL so that assemble_external will be called as
13856 necessary. We'll clear it again in finish_file. */
13857 if (! DECL_EXTERNAL (fndecl))
13858 DECL_NOT_REALLY_EXTERN (fndecl) = 1;
13859 DECL_EXTERNAL (fndecl) = 1;
13860 mark_inline_for_output (fndecl);
13863 if (ctype && TREE_ASM_WRITTEN (fndecl))
13864 note_debug_info_needed (ctype);
13866 current_function_returns_null |= can_reach_end;
13868 /* Since we don't normally go through c_expand_return for constructors,
13869 this normally gets the wrong value.
13870 Also, named return values have their return codes emitted after
13871 NOTE_INSN_FUNCTION_END, confusing jump.c. */
13872 if (DECL_CONSTRUCTOR_P (fndecl)
13873 || DECL_NAME (DECL_RESULT (fndecl)) != NULL_TREE)
13874 current_function_returns_null = 0;
13876 if (TREE_THIS_VOLATILE (fndecl) && current_function_returns_null)
13877 cp_warning ("`noreturn' function `%D' does return", fndecl);
13878 else if ((warn_return_type || pedantic)
13879 && current_function_returns_null
13880 && TREE_CODE (TREE_TYPE (fntype)) != VOID_TYPE)
13882 /* If this function returns non-void and control can drop through,
13884 cp_warning ("control reaches end of non-void function `%D'", fndecl);
13886 /* With just -W, complain only if function returns both with
13887 and without a value. */
13888 else if (extra_warnings
13889 && current_function_returns_value && current_function_returns_null)
13890 warning ("this function may return with or without a value");
13895 /* Free all the tree nodes making up this function. */
13896 /* Switch back to allocating nodes permanently
13897 until we start another function. */
13899 permanent_allocation (1);
13901 if (DECL_SAVED_INSNS (fndecl) == NULL_RTX)
13905 /* Stop pointing to the local nodes about to be freed. */
13906 /* But DECL_INITIAL must remain nonzero so we know this
13907 was an actual function definition. */
13908 DECL_INITIAL (fndecl) = error_mark_node;
13909 for (t = DECL_ARGUMENTS (fndecl); t; t = TREE_CHAIN (t))
13910 DECL_RTL (t) = DECL_INCOMING_RTL (t) = NULL_RTX;
13913 if (DECL_STATIC_CONSTRUCTOR (fndecl))
13914 static_ctors = perm_tree_cons (NULL_TREE, fndecl, static_ctors);
13915 if (DECL_STATIC_DESTRUCTOR (fndecl))
13916 static_dtors = perm_tree_cons (NULL_TREE, fndecl, static_dtors);
13920 /* Let the error reporting routines know that we're outside a
13921 function. For a nested function, this value is used in
13922 pop_cp_function_context and then reset via pop_function_context. */
13923 current_function_decl = NULL_TREE;
13926 named_label_uses = NULL;
13927 current_class_ptr = NULL_TREE;
13928 current_class_ref = NULL_TREE;
13931 /* Create the FUNCTION_DECL for a function definition.
13932 DECLSPECS and DECLARATOR are the parts of the declaration;
13933 they describe the return type and the name of the function,
13934 but twisted together in a fashion that parallels the syntax of C.
13936 This function creates a binding context for the function body
13937 as well as setting up the FUNCTION_DECL in current_function_decl.
13939 Returns a FUNCTION_DECL on success.
13941 If the DECLARATOR is not suitable for a function (it defines a datum
13942 instead), we return 0, which tells yyparse to report a parse error.
13944 May return void_type_node indicating that this method is actually
13945 a friend. See grokfield for more details.
13947 Came here with a `.pushlevel' .
13949 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
13950 CHANGES TO CODE IN `grokfield'. */
13953 start_method (declspecs, declarator, attrlist)
13954 tree declarator, declspecs, attrlist;
13956 tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
13959 /* Something too ugly to handle. */
13960 if (fndecl == NULL_TREE)
13963 /* Pass friends other than inline friend functions back. */
13964 if (fndecl == void_type_node)
13967 if (TREE_CODE (fndecl) != FUNCTION_DECL)
13968 /* Not a function, tell parser to report parse error. */
13971 if (IS_SIGNATURE (current_class_type))
13972 IS_DEFAULT_IMPLEMENTATION (fndecl) = 1;
13974 if (DECL_IN_AGGR_P (fndecl))
13976 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type)
13978 if (DECL_CONTEXT (fndecl)
13979 && TREE_CODE( DECL_CONTEXT (fndecl)) != NAMESPACE_DECL)
13980 cp_error ("`%D' is already defined in class %s", fndecl,
13981 TYPE_NAME_STRING (DECL_CONTEXT (fndecl)));
13983 return void_type_node;
13986 check_template_shadow (fndecl);
13988 DECL_THIS_INLINE (fndecl) = 1;
13990 if (flag_default_inline)
13991 DECL_INLINE (fndecl) = 1;
13993 /* We process method specializations in finish_struct_1. */
13994 if (processing_template_decl && !DECL_TEMPLATE_SPECIALIZATION (fndecl))
13995 fndecl = push_template_decl (fndecl);
13997 /* We read in the parameters on the maybepermanent_obstack,
13998 but we won't be getting back to them until after we
13999 may have clobbered them. So the call to preserve_data
14000 will keep them safe. */
14003 if (! DECL_FRIEND_P (fndecl))
14005 if (TREE_CHAIN (fndecl))
14007 fndecl = copy_node (fndecl);
14008 TREE_CHAIN (fndecl) = NULL_TREE;
14011 if (DECL_CONSTRUCTOR_P (fndecl))
14013 if (! grok_ctor_properties (current_class_type, fndecl))
14014 return void_type_node;
14016 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl)))
14017 grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0);
14020 cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0, 0);
14022 /* Make a place for the parms */
14024 current_binding_level->parm_flag = 1;
14026 DECL_IN_AGGR_P (fndecl) = 1;
14030 /* Go through the motions of finishing a function definition.
14031 We don't compile this method until after the whole class has
14034 FINISH_METHOD must return something that looks as though it
14035 came from GROKFIELD (since we are defining a method, after all).
14037 This is called after parsing the body of the function definition.
14038 STMTS is the chain of statements that makes up the function body.
14040 DECL is the ..._DECL that `start_method' provided. */
14043 finish_method (decl)
14046 register tree fndecl = decl;
14049 register tree link;
14051 if (decl == void_type_node)
14054 old_initial = DECL_INITIAL (fndecl);
14056 /* Undo the level for the parms (from start_method).
14057 This is like poplevel, but it causes nothing to be
14058 saved. Saving information here confuses symbol-table
14059 output routines. Besides, this information will
14060 be correctly output when this method is actually
14063 /* Clear out the meanings of the local variables of this level;
14064 also record in each decl which block it belongs to. */
14066 for (link = current_binding_level->names; link; link = TREE_CHAIN (link))
14068 if (DECL_NAME (link) != NULL_TREE)
14069 pop_binding (DECL_NAME (link), link);
14070 my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163);
14071 DECL_CONTEXT (link) = NULL_TREE;
14074 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
14075 (HOST_WIDE_INT) current_binding_level->level_chain,
14076 current_binding_level->parm_flag,
14077 current_binding_level->keep);
14079 poplevel (0, 0, 0);
14081 DECL_INITIAL (fndecl) = old_initial;
14083 /* We used to check if the context of FNDECL was different from
14084 current_class_type as another way to get inside here. This didn't work
14085 for String.cc in libg++. */
14086 if (DECL_FRIEND_P (fndecl))
14088 CLASSTYPE_INLINE_FRIENDS (current_class_type)
14089 = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type));
14090 decl = void_type_node;
14096 /* Called when a new struct TYPE is defined.
14097 If this structure or union completes the type of any previous
14098 variable declaration, lay it out and output its rtl. */
14101 hack_incomplete_structures (type)
14106 if (current_binding_level->incomplete == NULL_TREE)
14109 if (!type) /* Don't do this for class templates. */
14112 for (list = ¤t_binding_level->incomplete; *list; )
14114 tree decl = TREE_VALUE (*list);
14115 if ((decl && TREE_TYPE (decl) == type)
14116 || (TREE_TYPE (decl)
14117 && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
14118 && TREE_TYPE (TREE_TYPE (decl)) == type))
14120 int toplevel = toplevel_bindings_p ();
14121 if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
14122 && TREE_TYPE (TREE_TYPE (decl)) == type)
14123 layout_type (TREE_TYPE (decl));
14124 layout_decl (decl, 0);
14125 rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0);
14129 expand_decl (decl);
14130 cleanup = maybe_build_cleanup (decl);
14131 expand_decl_init (decl);
14132 if (! expand_decl_cleanup (decl, cleanup))
14133 cp_error ("parser lost in parsing declaration of `%D'",
14136 *list = TREE_CHAIN (*list);
14139 list = &TREE_CHAIN (*list);
14143 /* If DECL is of a type which needs a cleanup, build that cleanup here.
14144 See build_delete for information about AUTO_DELETE.
14146 Don't build these on the momentary obstack; they must live
14147 the life of the binding contour. */
14150 maybe_build_cleanup_1 (decl, auto_delete)
14151 tree decl, auto_delete;
14153 tree type = TREE_TYPE (decl);
14154 if (TYPE_NEEDS_DESTRUCTOR (type))
14156 int temp = 0, flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
14159 if (TREE_CODE (decl) != PARM_DECL)
14160 temp = suspend_momentary ();
14162 if (TREE_CODE (type) == ARRAY_TYPE)
14166 mark_addressable (decl);
14167 rval = build_unary_op (ADDR_EXPR, decl, 0);
14170 /* Optimize for space over speed here. */
14171 if (! TYPE_USES_VIRTUAL_BASECLASSES (type)
14172 || flag_expensive_optimizations)
14173 flags |= LOOKUP_NONVIRTUAL;
14175 rval = build_delete (TREE_TYPE (rval), rval, auto_delete, flags, 0);
14177 if (TYPE_USES_VIRTUAL_BASECLASSES (type)
14178 && ! TYPE_HAS_DESTRUCTOR (type))
14179 rval = build_compound_expr (expr_tree_cons (NULL_TREE, rval,
14180 build_expr_list (NULL_TREE, build_vbase_delete (type, decl))));
14182 if (TREE_CODE (decl) != PARM_DECL)
14183 resume_momentary (temp);
14190 /* If DECL is of a type which needs a cleanup, build that cleanup
14191 here. The cleanup does free the storage with a call to delete. */
14194 maybe_build_cleanup_and_delete (decl)
14197 return maybe_build_cleanup_1 (decl, integer_three_node);
14200 /* If DECL is of a type which needs a cleanup, build that cleanup
14201 here. The cleanup does not free the storage with a call a delete. */
14204 maybe_build_cleanup (decl)
14207 return maybe_build_cleanup_1 (decl, integer_two_node);
14210 /* Expand a C++ expression at the statement level.
14211 This is needed to ferret out nodes which have UNKNOWN_TYPE.
14212 The C++ type checker should get all of these out when
14213 expressions are combined with other, type-providing, expressions,
14214 leaving only orphan expressions, such as:
14216 &class::bar; / / takes its address, but does nothing with it. */
14219 cplus_expand_expr_stmt (exp)
14222 if (processing_template_decl)
14224 add_tree (build_min_nt (EXPR_STMT, exp));
14228 /* Arrange for all temps to disappear. */
14229 expand_start_target_temps ();
14231 if (TREE_TYPE (exp) == unknown_type_node)
14233 if (TREE_CODE (exp) == COMPONENT_REF)
14234 error ("invalid reference to a member function name, did you forget the ()?");
14236 error ("address of overloaded function with no contextual type information");
14240 if (TREE_CODE (exp) == FUNCTION_DECL)
14242 cp_warning ("reference, not call, to function `%D'", exp);
14243 warning ("at this point in file");
14247 /* We should do this eventually, but right now this causes regex.o from
14248 libg++ to miscompile, and tString to core dump. */
14249 exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp);
14252 /* Strip unused implicit INDIRECT_REFs of references. */
14253 if (TREE_CODE (exp) == INDIRECT_REF
14254 && TREE_CODE (TREE_TYPE (TREE_OPERAND (exp, 0))) == REFERENCE_TYPE)
14255 exp = TREE_OPERAND (exp, 0);
14257 /* If we don't do this, we end up down inside expand_expr
14258 trying to do TYPE_MODE on the ERROR_MARK, and really
14259 go outside the bounds of the type. */
14260 if (exp != error_mark_node)
14261 expand_expr_stmt (break_out_cleanups (exp));
14264 /* Clean up any pending cleanups. This happens when a function call
14265 returns a cleanup-needing value that nobody uses. */
14266 expand_end_target_temps ();
14269 /* When a stmt has been parsed, this function is called.
14271 Currently, this function only does something within a
14272 constructor's scope: if a stmt has just assigned to this,
14273 and we are in a derived class, we call `emit_base_init'. */
14278 extern struct nesting *cond_stack, *loop_stack, *case_stack;
14281 if (current_function_assigns_this
14282 || ! current_function_just_assigned_this)
14284 if (DECL_CONSTRUCTOR_P (current_function_decl))
14286 /* Constructors must wait until we are out of control
14287 zones before calling base constructors. */
14288 if (cond_stack || loop_stack || case_stack)
14290 expand_expr_stmt (base_init_expr);
14291 check_base_init (current_class_type);
14293 current_function_assigns_this = 1;
14296 /* Change a static member function definition into a FUNCTION_TYPE, instead
14297 of the METHOD_TYPE that we create when it's originally parsed.
14299 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
14300 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
14301 other decls. Either pass the addresses of local variables or NULL. */
14304 revert_static_member_fn (decl, fn, argtypes)
14305 tree *decl, *fn, *argtypes;
14308 tree function = fn ? *fn : TREE_TYPE (*decl);
14309 tree args = argtypes ? *argtypes : TYPE_ARG_TYPES (function);
14311 if (CP_TYPE_QUALS (TREE_TYPE (TREE_VALUE (args)))
14312 != TYPE_UNQUALIFIED)
14313 cp_error ("static member function `%#D' declared with type qualifiers",
14316 args = TREE_CHAIN (args);
14317 tmp = build_function_type (TREE_TYPE (function), args);
14318 tmp = build_qualified_type (tmp, CP_TYPE_QUALS (function));
14319 tmp = build_exception_variant (tmp,
14320 TYPE_RAISES_EXCEPTIONS (function));
14321 TREE_TYPE (*decl) = tmp;
14322 if (DECL_ARGUMENTS (*decl))
14323 DECL_ARGUMENTS (*decl) = TREE_CHAIN (DECL_ARGUMENTS (*decl));
14324 DECL_STATIC_FUNCTION_P (*decl) = 1;
14332 id_in_current_class (id)
14335 return !!purpose_member (id, class_binding_level->class_shadowed);
14343 int just_assigned_this;
14345 int temp_name_counter;
14347 struct named_label_list *named_label_uses;
14348 tree shadowed_labels;
14351 rtx last_dtor_insn;
14352 rtx last_parm_cleanup_insn;
14353 tree base_init_list;
14354 tree member_init_list;
14355 tree base_init_expr;
14356 tree current_class_ptr;
14357 tree current_class_ref;
14359 struct cp_function *next;
14360 struct binding_level *binding_level;
14361 int static_labelno;
14364 static struct cp_function *cp_function_chain;
14366 extern int temp_name_counter;
14368 /* Save and reinitialize the variables
14369 used during compilation of a C++ function. */
14372 push_cp_function_context (context)
14375 struct cp_function *p
14376 = (struct cp_function *) xmalloc (sizeof (struct cp_function));
14378 push_function_context_to (context);
14380 p->next = cp_function_chain;
14381 cp_function_chain = p;
14383 p->named_labels = named_labels;
14384 p->named_label_uses = named_label_uses;
14385 p->shadowed_labels = shadowed_labels;
14386 p->returns_value = current_function_returns_value;
14387 p->returns_null = current_function_returns_null;
14388 p->binding_level = current_binding_level;
14389 p->ctor_label = ctor_label;
14390 p->dtor_label = dtor_label;
14391 p->last_dtor_insn = last_dtor_insn;
14392 p->last_parm_cleanup_insn = last_parm_cleanup_insn;
14393 p->assigns_this = current_function_assigns_this;
14394 p->just_assigned_this = current_function_just_assigned_this;
14395 p->parms_stored = current_function_parms_stored;
14396 p->result_rtx = original_result_rtx;
14397 p->base_init_expr = base_init_expr;
14398 p->temp_name_counter = temp_name_counter;
14399 p->base_init_list = current_base_init_list;
14400 p->member_init_list = current_member_init_list;
14401 p->current_class_ptr = current_class_ptr;
14402 p->current_class_ref = current_class_ref;
14403 p->static_labelno = static_labelno;
14406 /* Restore the variables used during compilation of a C++ function. */
14409 pop_cp_function_context (context)
14412 struct cp_function *p = cp_function_chain;
14415 /* Bring back all the labels that were shadowed. */
14416 for (link = shadowed_labels; link; link = TREE_CHAIN (link))
14417 if (DECL_NAME (TREE_VALUE (link)) != 0)
14418 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)),
14419 TREE_VALUE (link));
14421 pop_function_context_from (context);
14423 cp_function_chain = p->next;
14425 named_labels = p->named_labels;
14426 named_label_uses = p->named_label_uses;
14427 shadowed_labels = p->shadowed_labels;
14428 current_function_returns_value = p->returns_value;
14429 current_function_returns_null = p->returns_null;
14430 current_binding_level = p->binding_level;
14431 ctor_label = p->ctor_label;
14432 dtor_label = p->dtor_label;
14433 last_dtor_insn = p->last_dtor_insn;
14434 last_parm_cleanup_insn = p->last_parm_cleanup_insn;
14435 current_function_assigns_this = p->assigns_this;
14436 current_function_just_assigned_this = p->just_assigned_this;
14437 current_function_parms_stored = p->parms_stored;
14438 original_result_rtx = p->result_rtx;
14439 base_init_expr = p->base_init_expr;
14440 temp_name_counter = p->temp_name_counter;
14441 current_base_init_list = p->base_init_list;
14442 current_member_init_list = p->member_init_list;
14443 current_class_ptr = p->current_class_ptr;
14444 current_class_ref = p->current_class_ref;
14445 static_labelno = p->static_labelno;
14453 return function_depth != 0;