1 /* Process declarations and variables for C compiler.
2 Copyright (C) 1988, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
3 Hacked 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. */
38 #include <sys/types.h>
43 #define obstack_chunk_alloc xmalloc
44 #define obstack_chunk_free free
46 extern tree builtin_return_address_fndecl;
48 extern struct obstack permanent_obstack;
50 extern int current_class_depth;
52 extern tree cleanups_this_call;
54 extern tree static_ctors, static_dtors;
56 /* Stack of places to restore the search obstack back to. */
58 /* Obstack used for remembering local class declarations (like
59 enums and static (const) members. */
61 struct obstack decl_obstack;
62 static struct stack_level *decl_stack;
64 #ifndef CHAR_TYPE_SIZE
65 #define CHAR_TYPE_SIZE BITS_PER_UNIT
68 #ifndef SHORT_TYPE_SIZE
69 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
73 #define INT_TYPE_SIZE BITS_PER_WORD
76 #ifndef LONG_TYPE_SIZE
77 #define LONG_TYPE_SIZE BITS_PER_WORD
80 #ifndef LONG_LONG_TYPE_SIZE
81 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
84 #ifndef WCHAR_UNSIGNED
85 #define WCHAR_UNSIGNED 0
88 #ifndef FLOAT_TYPE_SIZE
89 #define FLOAT_TYPE_SIZE BITS_PER_WORD
92 #ifndef DOUBLE_TYPE_SIZE
93 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
96 #ifndef LONG_DOUBLE_TYPE_SIZE
97 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
100 #ifndef BOOL_TYPE_SIZE
101 #ifdef SLOW_BYTE_ACCESS
102 #define BOOL_TYPE_SIZE ((SLOW_BYTE_ACCESS) ? (POINTER_SIZE) : (CHAR_TYPE_SIZE))
104 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
108 /* We let tm.h override the types used here, to handle trivial differences
109 such as the choice of unsigned int or long unsigned int for size_t.
110 When machines start needing nontrivial differences in the size type,
111 it would be best to do something here to figure out automatically
112 from other information what type to use. */
115 #define SIZE_TYPE "long unsigned int"
119 #define PTRDIFF_TYPE "long int"
123 #define WCHAR_TYPE "int"
126 static tree grokparms PROTO((tree, int));
127 static tree lookup_nested_type PROTO((tree, tree));
128 static char *redeclaration_error_message PROTO((tree, tree));
131 PROTO((char *, tree, enum built_in_function, void (*)(), char *));
133 /* a node which has tree code ERROR_MARK, and whose type is itself.
134 All erroneous expressions are replaced with this node. All functions
135 that accept nodes as arguments should avoid generating error messages
136 if this node is one of the arguments, since it is undesirable to get
137 multiple error messages from one error in the input. */
139 tree error_mark_node;
141 /* Erroneous argument lists can use this *IFF* they do not modify it. */
142 tree error_mark_list;
144 /* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */
146 tree short_integer_type_node;
147 tree integer_type_node;
148 tree long_integer_type_node;
149 tree long_long_integer_type_node;
151 tree short_unsigned_type_node;
152 tree unsigned_type_node;
153 tree long_unsigned_type_node;
154 tree long_long_unsigned_type_node;
156 tree ptrdiff_type_node;
158 tree unsigned_char_type_node;
159 tree signed_char_type_node;
161 tree wchar_type_node;
162 tree signed_wchar_type_node;
163 tree unsigned_wchar_type_node;
165 tree wchar_decl_node;
167 tree float_type_node;
168 tree double_type_node;
169 tree long_double_type_node;
171 tree intQI_type_node;
172 tree intHI_type_node;
173 tree intSI_type_node;
174 tree intDI_type_node;
176 tree unsigned_intQI_type_node;
177 tree unsigned_intHI_type_node;
178 tree unsigned_intSI_type_node;
179 tree unsigned_intDI_type_node;
181 /* a VOID_TYPE node, and the same, packaged in a TREE_LIST. */
183 tree void_type_node, void_list_node;
186 /* Nodes for types `void *' and `const void *'. */
188 tree ptr_type_node, const_ptr_type_node;
190 /* Nodes for types `char *' and `const char *'. */
192 tree string_type_node, const_string_type_node;
194 /* Type `char[256]' or something like it.
195 Used when an array of char is needed and the size is irrelevant. */
197 tree char_array_type_node;
199 /* Type `int[256]' or something like it.
200 Used when an array of int needed and the size is irrelevant. */
202 tree int_array_type_node;
204 /* Type `wchar_t[256]' or something like it.
205 Used when a wide string literal is created. */
207 tree wchar_array_type_node;
209 /* The bool data type, and constants */
210 tree boolean_type_node, boolean_true_node, boolean_false_node;
212 /* type `int ()' -- used for implicit declaration of functions. */
214 tree default_function_type;
216 /* function types `double (double)' and `double (double, double)', etc. */
218 tree double_ftype_double, double_ftype_double_double;
219 tree int_ftype_int, long_ftype_long;
220 tree float_ftype_float;
221 tree ldouble_ftype_ldouble;
223 /* Function type `int (const void *, const void *, size_t)' */
224 static tree int_ftype_cptr_cptr_sizet;
227 tree vtable_entry_type;
228 tree delta_type_node;
230 /* Old rtti stuff. */
231 tree __baselist_desc_type_node;
232 tree __i_desc_type_node, __m_desc_type_node;
233 tree __t_desc_array_type, __i_desc_array_type, __m_desc_array_type;
235 tree __t_desc_type_node;
237 tree __tp_desc_type_node;
239 tree __access_mode_type_node;
240 tree __bltn_desc_type_node, __user_desc_type_node, __class_desc_type_node;
241 tree __ptr_desc_type_node, __attr_desc_type_node, __func_desc_type_node;
242 tree __ptmf_desc_type_node, __ptmd_desc_type_node;
244 /* Not needed yet? May be needed one day? */
245 tree __bltn_desc_array_type, __user_desc_array_type, __class_desc_array_type;
246 tree __ptr_desc_array_type, __attr_dec_array_type, __func_desc_array_type;
247 tree __ptmf_desc_array_type, __ptmd_desc_array_type;
250 tree class_star_type_node;
251 tree class_type_node, record_type_node, union_type_node, enum_type_node;
252 tree unknown_type_node;
253 tree opaque_type_node, signature_type_node;
254 tree sigtable_entry_type;
256 /* Array type `vtable_entry_type[]' */
259 /* In a destructor, the point at which all derived class destroying
260 has been done, just before any base class destroying will be done. */
264 /* In a destructor, the last insn emitted after the start of the
265 function and the parms. */
269 /* In a constructor, the point at which we are ready to return
270 the pointer to the initialized object. */
274 /* A FUNCTION_DECL which can call `abort'. Not necessarily the
275 one that the user will declare, but sufficient to be called
276 by routines that want to abort the program. */
280 extern rtx cleanup_label, return_label;
282 /* If original DECL_RESULT of current function was a register,
283 but due to being an addressable named return value, would up
284 on the stack, this variable holds the named return value's
285 original location. */
286 rtx original_result_rtx;
288 /* Sequence of insns which represents base initialization. */
291 /* C++: Keep these around to reduce calls to `get_identifier'.
292 Identifiers for `this' in member functions and the auto-delete
293 parameter for destructors. */
294 tree this_identifier, in_charge_identifier;
295 tree ctor_identifier, dtor_identifier;
296 /* Used in pointer to member functions, in vtables, and in sigtables. */
297 tree pfn_identifier, index_identifier, delta_identifier, delta2_identifier;
298 tree pfn_or_delta2_identifier, tag_identifier;
299 tree vt_off_identifier;
301 struct named_label_list
303 struct binding_level *binding_level;
306 char *filename_o_goto;
308 struct named_label_list *next;
311 /* A list (chain of TREE_LIST nodes) of named label uses.
312 The TREE_PURPOSE field is the list of variables defined
313 the the label's scope defined at the point of use.
314 The TREE_VALUE field is the LABEL_DECL used.
315 The TREE_TYPE field holds `current_binding_level' at the
316 point of the label's use.
318 BWAHAHAAHAHahhahahahaah. No, no, no, said the little chicken.
320 Look at the pretty struct named_label_list. See the pretty struct
321 with the pretty named fields that describe what they do. See the
322 pretty lack of gratuitous casts. Notice the code got a lot cleaner.
324 Used only for jumps to as-yet undefined labels, since
325 jumps to defined labels can have their validity checked
328 static struct named_label_list *named_label_uses = NULL;
330 /* A list of objects which have constructors or destructors
331 which reside in the global scope. The decl is stored in
332 the TREE_VALUE slot and the initializer is stored
333 in the TREE_PURPOSE slot. */
334 tree static_aggregates;
338 /* Two expressions that are constants with value zero.
339 The first is of type `int', the second of type `void *'. */
341 tree integer_zero_node;
342 tree null_pointer_node;
344 /* The value for __null (NULL), either of type `void *' or, with -ansi,
345 an integer type of the same size. */
349 /* A node for the integer constants 1, 2, and 3. */
351 tree integer_one_node, integer_two_node, integer_three_node;
353 /* Nonzero if we have seen an invalid cross reference
354 to a struct, union, or enum, but not yet printed the message. */
356 tree pending_invalid_xref;
357 /* File and line to appear in the eventual error message. */
358 char *pending_invalid_xref_file;
359 int pending_invalid_xref_line;
361 /* While defining an enum type, this is 1 plus the last enumerator
364 static tree enum_next_value;
366 /* Nonzero means that there was overflow computing enum_next_value. */
368 static int enum_overflow;
370 /* Parsing a function declarator leaves a list of parameter names
371 or a chain or parameter decls here. */
373 tree last_function_parms;
375 /* Parsing a function declarator leaves here a chain of structure
376 and enum types declared in the parmlist. */
378 static tree last_function_parm_tags;
380 /* After parsing the declarator that starts a function definition,
381 `start_function' puts here the list of parameter names or chain of decls.
382 `store_parm_decls' finds it here. */
384 static tree current_function_parms;
386 /* Similar, for last_function_parm_tags. */
387 static tree current_function_parm_tags;
389 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
390 that have names. Here so we can clear out their names' definitions
391 at the end of the function. */
393 static tree named_labels;
395 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
397 static tree shadowed_labels;
399 /* The FUNCTION_DECL for the function currently being compiled,
400 or 0 if between functions. */
401 tree current_function_decl;
403 /* Set to 0 at beginning of a function definition, set to 1 if
404 a return statement that specifies a return value is seen. */
406 int current_function_returns_value;
408 /* Set to 0 at beginning of a function definition, set to 1 if
409 a return statement with no argument is seen. */
411 int current_function_returns_null;
413 /* Set to 0 at beginning of a function definition, and whenever
414 a label (case or named) is defined. Set to value of expression
415 returned from function when that value can be transformed into
416 a named return value. */
418 tree current_function_return_value;
420 /* Set to nonzero by `grokdeclarator' for a function
421 whose return type is defaulted, if warnings for this are desired. */
423 static int warn_about_return_type;
425 /* Nonzero means give `double' the same size as `float'. */
427 extern int flag_short_double;
429 /* Nonzero means don't recognize any builtin functions. */
431 extern int flag_no_builtin;
433 /* Nonzero means don't recognize the non-ANSI builtin functions.
436 extern int flag_no_nonansi_builtin;
438 /* Nonzero means enable obscure ANSI features and disable GNU extensions
439 that might cause ANSI-compliant code to be miscompiled. */
441 extern int flag_ansi;
443 /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes)
445 extern int flag_huge_objects;
447 /* Nonzero if we want to conserve space in the .o files. We do this
448 by putting uninitialized data and runtime initialized data into
449 .common instead of .data at the expense of not flagging multiple
451 extern int flag_conserve_space;
453 /* Pointers to the base and current top of the language name stack. */
455 extern tree *current_lang_base, *current_lang_stack;
457 /* C and C++ flags are in decl2.c. */
459 /* Set to 0 at beginning of a constructor, set to 1
460 if that function does an allocation before referencing its
461 instance variable. */
462 static int current_function_assigns_this;
463 int current_function_just_assigned_this;
465 /* Set to 0 at beginning of a function. Set non-zero when
466 store_parm_decls is called. Don't call store_parm_decls
467 if this flag is non-zero! */
468 int current_function_parms_stored;
470 /* Flag used when debugging spew.c */
472 extern int spew_debug;
474 /* This is a copy of the class_shadowed list of the previous class binding
475 contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs
476 when entering another class scope (i.e. a cache miss). */
477 extern tree previous_class_values;
479 /* A expression of value 0 with the same precision as a sizetype
481 tree signed_size_zero_node;
484 /* Allocate a level of searching. */
487 push_decl_level (stack, obstack)
488 struct stack_level *stack;
489 struct obstack *obstack;
491 struct stack_level tem;
494 return push_stack_level (obstack, (char *)&tem, sizeof (tem));
497 /* For each binding contour we allocate a binding_level structure
498 which records the names defined in that contour.
501 1) one for each function definition,
502 where internal declarations of the parameters appear.
503 2) one for each compound statement,
504 to record its declarations.
506 The current meaning of a name can be found by searching the levels
507 from the current one out to the global one.
509 Off to the side, may be the class_binding_level. This exists only
510 to catch class-local declarations. It is otherwise nonexistent.
512 Also there may be binding levels that catch cleanups that must be
513 run when exceptions occur. */
515 /* Note that the information in the `names' component of the global contour
516 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
520 /* A chain of _DECL nodes for all variables, constants, functions,
521 and typedef types. These are in the reverse of the order
525 /* A list of structure, union and enum definitions, for looking up
527 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
528 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
529 or ENUMERAL_TYPE node.
531 C++: the TREE_VALUE nodes can be simple types for
532 component_bindings. */
535 /* For each level, a list of shadowed outer-level local definitions
536 to be restored when this level is popped.
537 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
538 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
541 /* Same, for IDENTIFIER_CLASS_VALUE. */
544 /* Same, for IDENTIFIER_TYPE_VALUE. */
547 /* For each level (except not the global one),
548 a chain of BLOCK nodes for all the levels
549 that were entered and exited one level down. */
552 /* The BLOCK node for this level, if one has been preallocated.
553 If 0, the BLOCK is allocated (if needed) when the level is popped. */
556 /* The binding level which this one is contained in (inherits from). */
557 struct binding_level *level_chain;
559 /* List of decls in `names' that have incomplete
560 structure or union types. */
563 /* List of VAR_DECLS saved from a previous for statement.
564 These would be dead in ANSI-conforming code, but might
565 be referenced in ARM-era code. */
566 tree dead_vars_from_for;
568 /* 1 for the level that holds the parameters of a function.
569 2 for the level that holds a class declaration.
570 3 for levels that hold parameter declarations. */
571 unsigned parm_flag : 4;
573 /* 1 means make a BLOCK for this level regardless of all else.
574 2 for temporary binding contours created by the compiler. */
577 /* Nonzero if this level "doesn't exist" for tags. */
578 unsigned tag_transparent : 1;
580 /* Nonzero if this level can safely have additional
581 cleanup-needing variables added to it. */
582 unsigned more_cleanups_ok : 1;
583 unsigned have_cleanups : 1;
585 /* Nonzero if this level is for storing the decls for template
586 parameters and generic decls; these decls will be discarded and
587 replaced with a TEMPLATE_DECL. */
588 unsigned pseudo_global : 1;
590 /* This is set for a namespace binding level. */
591 unsigned namespace_p : 1;
593 /* True if this level is that of a for-statement where we need to
594 worry about ambiguous (ARM or ANSI) scope rules. */
595 unsigned is_for_scope : 1;
597 /* Two bits left for this word. */
599 #if defined(DEBUG_CP_BINDING_LEVELS)
600 /* Binding depth at which this level began. */
601 unsigned binding_depth;
602 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
605 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
607 /* The (non-class) binding level currently in effect. */
609 static struct binding_level *current_binding_level;
611 /* The binding level of the current class, if any. */
613 static struct binding_level *class_binding_level;
615 /* The current (class or non-class) binding level currently in effect. */
617 #define inner_binding_level \
618 (class_binding_level ? class_binding_level : current_binding_level)
620 /* A chain of binding_level structures awaiting reuse. */
622 static struct binding_level *free_binding_level;
624 /* The outermost binding level, for names of file scope.
625 This is created when the compiler is started and exists
626 through the entire run. */
628 static struct binding_level *global_binding_level;
630 /* Binding level structures are initialized by copying this one. */
632 static struct binding_level clear_binding_level;
634 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
636 static int keep_next_level_flag;
638 #if defined(DEBUG_CP_BINDING_LEVELS)
639 static int binding_depth = 0;
640 static int is_class_level = 0;
647 for (i = 0; i < binding_depth*2; i++)
650 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
652 static tree pushdecl_with_scope PROTO((tree, struct binding_level *));
655 push_binding_level (newlevel, tag_transparent, keep)
656 struct binding_level *newlevel;
657 int tag_transparent, keep;
659 /* Add this level to the front of the chain (stack) of levels that
661 *newlevel = clear_binding_level;
662 if (class_binding_level)
664 newlevel->level_chain = class_binding_level;
665 class_binding_level = (struct binding_level *)0;
669 newlevel->level_chain = current_binding_level;
671 current_binding_level = newlevel;
672 newlevel->tag_transparent = tag_transparent;
673 newlevel->more_cleanups_ok = 1;
674 newlevel->keep = keep;
675 #if defined(DEBUG_CP_BINDING_LEVELS)
676 newlevel->binding_depth = binding_depth;
678 fprintf (stderr, "push %s level 0x%08x line %d\n",
679 (is_class_level) ? "class" : "block", newlevel, lineno);
682 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
688 if (class_binding_level)
689 current_binding_level = class_binding_level;
691 if (global_binding_level)
693 /* cannot pop a level, if there are none left to pop. */
694 if (current_binding_level == global_binding_level)
695 my_friendly_abort (123);
697 /* Pop the current level, and free the structure for reuse. */
698 #if defined(DEBUG_CP_BINDING_LEVELS)
701 fprintf (stderr, "pop %s level 0x%08x line %d\n",
702 (is_class_level) ? "class" : "block",
703 current_binding_level, lineno);
704 if (is_class_level != (current_binding_level == class_binding_level))
707 fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
710 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
712 register struct binding_level *level = current_binding_level;
713 current_binding_level = current_binding_level->level_chain;
714 level->level_chain = free_binding_level;
715 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
716 if (level->binding_depth != binding_depth)
718 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
719 free_binding_level = level;
721 class_binding_level = current_binding_level;
722 if (class_binding_level->parm_flag != 2)
723 class_binding_level = 0;
724 while (current_binding_level->parm_flag == 2)
725 current_binding_level = current_binding_level->level_chain;
730 suspend_binding_level ()
732 if (class_binding_level)
733 current_binding_level = class_binding_level;
735 if (global_binding_level)
737 /* cannot suspend a level, if there are none left to suspend. */
738 if (current_binding_level == global_binding_level)
739 my_friendly_abort (123);
741 /* Suspend the current level. */
742 #if defined(DEBUG_CP_BINDING_LEVELS)
745 fprintf (stderr, "suspend %s level 0x%08x line %d\n",
746 (is_class_level) ? "class" : "block",
747 current_binding_level, lineno);
748 if (is_class_level != (current_binding_level == class_binding_level))
751 fprintf (stderr, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
754 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
756 current_binding_level = current_binding_level->level_chain;
757 class_binding_level = current_binding_level;
758 if (class_binding_level->parm_flag != 2)
759 class_binding_level = 0;
760 while (current_binding_level->parm_flag == 2)
761 current_binding_level = current_binding_level->level_chain;
766 resume_binding_level (b)
767 struct binding_level *b;
769 if (class_binding_level)
772 /* These are here because we cannot deal with shadows yet. */
773 sorry ("cannot resume a namespace inside class");
776 b->level_chain = class_binding_level;
777 class_binding_level = (struct binding_level *)0;
783 /* These are here because we cannot deal with shadows yet. */
784 if (b->level_chain != current_binding_level)
786 sorry ("cannot resume a namespace inside a different namespace");
790 b->level_chain = current_binding_level;
792 current_binding_level = b;
793 #if defined(DEBUG_CP_BINDING_LEVELS)
794 b->binding_depth = binding_depth;
796 fprintf (stderr, "resume %s level 0x%08x line %d\n",
797 (is_class_level) ? "class" : "block", b, lineno);
800 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
803 /* Create a new `struct binding_level'. */
806 struct binding_level *
807 make_binding_level ()
810 return (struct binding_level *) xmalloc (sizeof (struct binding_level));
813 /* Nonzero if we are currently in the global binding level. */
818 return current_binding_level == global_binding_level;
821 /* Nonzero if we are currently in a toplevel binding level. This
822 means either the global binding level or a namespace in a toplevel
826 toplevel_bindings_p ()
828 struct binding_level *b = current_binding_level;
832 if (b == global_binding_level)
834 if (b->pseudo_global)
836 if (! b->namespace_p)
842 /* Nonzero if this is a namespace scope. */
845 namespace_bindings_p ()
847 return current_binding_level->namespace_p;
853 keep_next_level_flag = 1;
856 /* Nonzero if the current level needs to have a BLOCK made. */
861 return (current_binding_level->blocks != NULL_TREE
862 || current_binding_level->keep
863 || current_binding_level->names != NULL_TREE
864 || (current_binding_level->tags != NULL_TREE
865 && !current_binding_level->tag_transparent));
868 /* Identify this binding level as a level of parameters. */
871 declare_parm_level ()
873 current_binding_level->parm_flag = 1;
877 declare_pseudo_global_level ()
879 current_binding_level->pseudo_global = 1;
883 declare_namespace_level ()
885 current_binding_level->namespace_p = 1;
889 pseudo_global_level_p ()
891 return current_binding_level->pseudo_global;
895 set_class_shadows (shadows)
898 class_binding_level->class_shadowed = shadows;
901 /* Enter a new binding level.
902 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
903 not for that of tags. */
906 pushlevel (tag_transparent)
909 register struct binding_level *newlevel = NULL_BINDING_LEVEL;
911 /* If this is the top level of a function,
912 just make sure that NAMED_LABELS is 0.
913 They should have been set to 0 at the end of the previous function. */
915 if (current_binding_level == global_binding_level)
916 my_friendly_assert (named_labels == NULL_TREE, 134);
918 /* Reuse or create a struct for this binding level. */
920 #if defined(DEBUG_CP_BINDING_LEVELS)
922 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
923 if (free_binding_level)
924 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
926 newlevel = free_binding_level;
927 free_binding_level = free_binding_level->level_chain;
931 newlevel = make_binding_level ();
934 push_binding_level (newlevel, tag_transparent, keep_next_level_flag);
935 GNU_xref_start_scope ((HOST_WIDE_INT) newlevel);
936 keep_next_level_flag = 0;
940 note_level_for_for ()
942 current_binding_level->is_for_scope = 1;
946 pushlevel_temporary (tag_transparent)
949 pushlevel (tag_transparent);
950 current_binding_level->keep = 2;
953 /* Note we don't call push_momentary() here. Otherwise, it would cause
954 cleanups to be allocated on the momentary obstack, and they will be
955 overwritten by the next statement. */
957 expand_start_bindings (0);
960 /* Exit a binding level.
961 Pop the level off, and restore the state of the identifier-decl mappings
962 that were in effect when this level was entered.
964 If KEEP == 1, this level had explicit declarations, so
965 and create a "block" (a BLOCK node) for the level
966 to record its declarations and subblocks for symbol table output.
968 If KEEP == 2, this level's subblocks go to the front,
969 not the back of the current binding level. This happens,
970 for instance, when code for constructors and destructors
971 need to generate code at the end of a function which must
972 be moved up to the front of the function.
974 If FUNCTIONBODY is nonzero, this level is the body of a function,
975 so create a block as if KEEP were set and also clear out all
978 If REVERSE is nonzero, reverse the order of decls before putting
979 them into the BLOCK. */
982 poplevel (keep, reverse, functionbody)
988 /* The chain of decls was accumulated in reverse order.
989 Put it into forward order, just for cleanliness. */
991 int tmp = functionbody;
992 int real_functionbody = current_binding_level->keep == 2
993 ? ((functionbody = 0), tmp) : functionbody;
994 tree tags = functionbody >= 0 ? current_binding_level->tags : 0;
995 tree subblocks = functionbody >= 0 ? current_binding_level->blocks : 0;
996 tree block = NULL_TREE;
998 int block_previously_created;
1000 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
1001 (HOST_WIDE_INT) current_binding_level->level_chain,
1002 current_binding_level->parm_flag,
1003 current_binding_level->keep);
1005 if (current_binding_level->keep == 1)
1008 /* Get the decls in the order they were written.
1009 Usually current_binding_level->names is in reverse order.
1010 But parameter decls were previously put in forward order. */
1013 current_binding_level->names
1014 = decls = nreverse (current_binding_level->names);
1016 decls = current_binding_level->names;
1018 /* Output any nested inline functions within this block
1019 if they weren't already output. */
1021 for (decl = decls; decl; decl = TREE_CHAIN (decl))
1022 if (TREE_CODE (decl) == FUNCTION_DECL
1023 && ! TREE_ASM_WRITTEN (decl)
1024 && DECL_INITIAL (decl) != NULL_TREE
1025 && TREE_ADDRESSABLE (decl)
1026 && decl_function_context (decl) == current_function_decl)
1028 /* If this decl was copied from a file-scope decl
1029 on account of a block-scope extern decl,
1030 propagate TREE_ADDRESSABLE to the file-scope decl. */
1031 if (DECL_ABSTRACT_ORIGIN (decl) != NULL_TREE)
1032 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl)) = 1;
1035 push_function_context ();
1036 output_inline_function (decl);
1037 pop_function_context ();
1041 /* If there were any declarations or structure tags in that level,
1042 or if this level is a function body,
1043 create a BLOCK to record them for the life of this function. */
1046 block_previously_created = (current_binding_level->this_block != NULL_TREE);
1047 if (block_previously_created)
1048 block = current_binding_level->this_block;
1049 else if (keep == 1 || functionbody)
1050 block = make_node (BLOCK);
1051 if (block != NULL_TREE)
1053 if (block_previously_created)
1055 if (decls || tags || subblocks)
1057 if (BLOCK_VARS (block) || BLOCK_TYPE_TAGS (block))
1059 warning ("internal compiler error: debugging info corrupted");
1061 BLOCK_VARS (block) = decls;
1062 BLOCK_TYPE_TAGS (block) = tags;
1064 /* We can have previous subblocks and new subblocks when
1065 doing fixup_gotos with complex cleanups. We chain the new
1066 subblocks onto the end of any pre-existing subblocks. */
1067 BLOCK_SUBBLOCKS (block) = chainon (BLOCK_SUBBLOCKS (block),
1070 /* If we created the block earlier on, and we are just
1071 diddling it now, then it already should have a proper
1072 BLOCK_END_NOTE value associated with it. */
1076 BLOCK_VARS (block) = decls;
1077 BLOCK_TYPE_TAGS (block) = tags;
1078 BLOCK_SUBBLOCKS (block) = subblocks;
1079 /* Otherwise, for a new block, install a new BLOCK_END_NOTE value. */
1080 remember_end_note (block);
1084 /* In each subblock, record that this is its superior. */
1087 for (link = subblocks; link; link = TREE_CHAIN (link))
1088 BLOCK_SUPERCONTEXT (link) = block;
1090 /* Clear out the meanings of the local variables of this level. */
1092 if (current_binding_level->is_for_scope && flag_new_for_scope == 1)
1094 struct binding_level *outer = current_binding_level->level_chain;
1095 for (link = decls; link; link = TREE_CHAIN (link))
1097 if (TREE_CODE (link) == VAR_DECL)
1098 DECL_DEAD_FOR_LOCAL (link) = 1;
1100 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = NULL_TREE;
1103 /* Save declarations made in a 'for' statement so we can support pre-ANSI
1104 'for' scoping semantics. */
1106 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
1108 tree id = TREE_PURPOSE (link);
1109 tree decl = IDENTIFIER_LOCAL_VALUE (id);
1111 if (decl && DECL_DEAD_FOR_LOCAL (decl))
1113 /* In this case keep the dead for-decl visible,
1114 but remember what (if anything) it shadowed. */
1115 DECL_SHADOWED_FOR_VAR (decl) = TREE_VALUE (link);
1116 TREE_CHAIN (decl) = outer->dead_vars_from_for;
1117 outer->dead_vars_from_for = decl;
1120 IDENTIFIER_LOCAL_VALUE (id) = TREE_VALUE (link);
1123 else /* Not special for scope. */
1125 for (link = decls; link; link = TREE_CHAIN (link))
1127 if (DECL_NAME (link) != NULL_TREE)
1129 /* If the ident. was used or addressed via a local extern decl,
1130 don't forget that fact. */
1131 if (DECL_EXTERNAL (link))
1133 if (TREE_USED (link))
1134 TREE_USED (DECL_ASSEMBLER_NAME (link)) = 1;
1135 if (TREE_ADDRESSABLE (link))
1136 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1;
1138 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = NULL_TREE;
1142 /* Restore all name-meanings of the outer levels
1143 that were shadowed by this level. */
1145 for (link = current_binding_level->shadowed;
1146 link; link = TREE_CHAIN (link))
1147 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1149 /* We first restore the regular decls and *then* the dead_vars_from_for
1150 to handle this case:
1154 for (int i; ; ) { ...} // i#2
1158 In this case, we want remove the binding for i#3, restoring
1159 that of i#2. Then we want to remove the binding for i#2,
1160 and restore that of i#1. */
1162 link = current_binding_level->dead_vars_from_for;
1163 for (; link != NULL_TREE; link = TREE_CHAIN (link))
1165 tree id = DECL_NAME (link);
1166 if (IDENTIFIER_LOCAL_VALUE (id) == link)
1167 IDENTIFIER_LOCAL_VALUE (id) = DECL_SHADOWED_FOR_VAR (link);
1170 for (link = current_binding_level->class_shadowed;
1171 link; link = TREE_CHAIN (link))
1172 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1173 for (link = current_binding_level->type_shadowed;
1174 link; link = TREE_CHAIN (link))
1175 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1178 /* If the level being exited is the top level of a function,
1179 check over all the labels. */
1183 /* If this is the top level block of a function,
1184 the vars are the function's parameters.
1185 Don't leave them in the BLOCK because they are
1186 found in the FUNCTION_DECL instead. */
1188 BLOCK_VARS (block) = 0;
1190 /* Clear out the definitions of all label names,
1191 since their scopes end here. */
1193 for (link = named_labels; link; link = TREE_CHAIN (link))
1195 register tree label = TREE_VALUE (link);
1197 if (DECL_INITIAL (label) == NULL_TREE)
1199 cp_error_at ("label `%D' used but not defined", label);
1200 /* Avoid crashing later. */
1201 define_label (input_filename, 1, DECL_NAME (label));
1203 else if (warn_unused && !TREE_USED (label))
1204 cp_warning_at ("label `%D' defined but not used", label);
1205 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label), NULL_TREE);
1207 /* Put the labels into the "variables" of the
1208 top-level block, so debugger can see them. */
1209 TREE_CHAIN (label) = BLOCK_VARS (block);
1210 BLOCK_VARS (block) = label;
1213 named_labels = NULL_TREE;
1216 /* Any uses of undefined labels now operate under constraints
1217 of next binding contour. */
1219 struct binding_level *level_chain;
1220 level_chain = current_binding_level->level_chain;
1223 struct named_label_list *labels;
1224 for (labels = named_label_uses; labels; labels = labels->next)
1225 if (labels->binding_level == current_binding_level)
1227 labels->binding_level = level_chain;
1228 labels->names_in_scope = level_chain->names;
1233 tmp = current_binding_level->keep;
1235 pop_binding_level ();
1237 DECL_INITIAL (current_function_decl) = block;
1240 if (!block_previously_created)
1241 current_binding_level->blocks
1242 = chainon (current_binding_level->blocks, block);
1244 /* If we did not make a block for the level just exited,
1245 any blocks made for inner levels
1246 (since they cannot be recorded as subblocks in that level)
1247 must be carried forward so they will later become subblocks
1248 of something else. */
1252 current_binding_level->blocks
1253 = chainon (subblocks, current_binding_level->blocks);
1255 current_binding_level->blocks
1256 = chainon (current_binding_level->blocks, subblocks);
1259 /* Take care of compiler's internal binding structures. */
1262 expand_end_bindings (getdecls (), keep, 1);
1263 /* Each and every BLOCK node created here in `poplevel' is important
1264 (e.g. for proper debugging information) so if we created one
1265 earlier, mark it as "used". */
1267 TREE_USED (block) = 1;
1268 block = poplevel (keep, reverse, real_functionbody);
1271 /* Each and every BLOCK node created here in `poplevel' is important
1272 (e.g. for proper debugging information) so if we created one
1273 earlier, mark it as "used". */
1275 TREE_USED (block) = 1;
1279 /* Resume a binding level for a namespace. */
1283 struct binding_level *b;
1287 resume_binding_level (b);
1289 /* Resume the variable caches. */
1290 decls = current_binding_level->names;
1292 /* Restore the meanings of the local variables of this level. */
1294 for (link = decls; link; link = TREE_CHAIN (link))
1296 /* If it doesn't have a name, there is nothing left to do with it. */
1297 if (DECL_NAME (link) == NULL_TREE)
1300 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = link;
1302 /* If this is a TYPE_DECL, push it into the type value slot. */
1303 if (TREE_CODE (link) == TYPE_DECL)
1304 SET_IDENTIFIER_TYPE_VALUE (DECL_NAME (link), TREE_TYPE (link));
1308 /* Delete the node BLOCK from the current binding level.
1309 This is used for the block inside a stmt expr ({...})
1310 so that the block can be reinserted where appropriate. */
1313 delete_block (block)
1317 if (current_binding_level->blocks == block)
1318 current_binding_level->blocks = TREE_CHAIN (block);
1319 for (t = current_binding_level->blocks; t;)
1321 if (TREE_CHAIN (t) == block)
1322 TREE_CHAIN (t) = TREE_CHAIN (block);
1326 TREE_CHAIN (block) = NULL_TREE;
1327 /* Clear TREE_USED which is always set by poplevel.
1328 The flag is set again if insert_block is called. */
1329 TREE_USED (block) = 0;
1332 /* Insert BLOCK at the end of the list of subblocks of the
1333 current binding level. This is used when a BIND_EXPR is expanded,
1334 to handle the BLOCK node inside the BIND_EXPR. */
1337 insert_block (block)
1340 TREE_USED (block) = 1;
1341 current_binding_level->blocks
1342 = chainon (current_binding_level->blocks, block);
1345 /* Add BLOCK to the current list of blocks for this binding contour. */
1348 add_block_current_level (block)
1351 current_binding_level->blocks
1352 = chainon (current_binding_level->blocks, block);
1355 /* Set the BLOCK node for the innermost scope
1356 (the one we are currently in). */
1360 register tree block;
1362 current_binding_level->this_block = block;
1365 /* Do a pushlevel for class declarations. */
1370 register struct binding_level *newlevel;
1372 /* Reuse or create a struct for this binding level. */
1373 #if defined(DEBUG_CP_BINDING_LEVELS)
1375 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1376 if (free_binding_level)
1377 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1379 newlevel = free_binding_level;
1380 free_binding_level = free_binding_level->level_chain;
1384 newlevel = make_binding_level ();
1387 #if defined(DEBUG_CP_BINDING_LEVELS)
1389 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1391 push_binding_level (newlevel, 0, 0);
1393 decl_stack = push_decl_level (decl_stack, &decl_obstack);
1394 class_binding_level = current_binding_level;
1395 class_binding_level->parm_flag = 2;
1396 /* We have just pushed into a new binding level. Now, fake out the rest
1397 of the compiler. Set the `current_binding_level' back to point to
1398 the most closely containing non-class binding level. */
1401 current_binding_level = current_binding_level->level_chain;
1403 while (current_binding_level->parm_flag == 2);
1406 /* ...and a poplevel for class declarations. FORCE is used to force
1407 clearing out of CLASS_VALUEs after a class definition. */
1410 poplevel_class (force)
1413 register struct binding_level *level = class_binding_level;
1414 tree block = NULL_TREE;
1417 my_friendly_assert (level != 0, 354);
1419 decl_stack = pop_stack_level (decl_stack);
1420 for (shadowed = level->shadowed; shadowed; shadowed = TREE_CHAIN (shadowed))
1421 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed);
1422 /* If we're leaving a toplevel class, don't bother to do the setting
1423 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1424 shouldn't even be used when current_class_type isn't set, and second,
1425 if we don't touch it here, we're able to use the cache effect if the
1426 next time we're entering a class scope, it is the same class. */
1427 if (current_class_depth != 1 || force)
1428 for (shadowed = level->class_shadowed;
1430 shadowed = TREE_CHAIN (shadowed))
1431 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed);
1433 /* Remember to save what IDENTIFIER's were bound in this scope so we
1434 can recover from cache misses. */
1436 previous_class_type = current_class_type;
1437 previous_class_values = class_binding_level->class_shadowed;
1439 for (shadowed = level->type_shadowed;
1441 shadowed = TREE_CHAIN (shadowed))
1442 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed)) = TREE_VALUE (shadowed);
1444 GNU_xref_end_scope ((HOST_WIDE_INT) class_binding_level,
1445 (HOST_WIDE_INT) class_binding_level->level_chain,
1446 class_binding_level->parm_flag,
1447 class_binding_level->keep);
1449 if (class_binding_level->parm_flag != 2)
1450 class_binding_level = (struct binding_level *)0;
1452 /* Now, pop out of the the binding level which we created up in the
1453 `pushlevel_class' routine. */
1454 #if defined(DEBUG_CP_BINDING_LEVELS)
1456 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1458 pop_binding_level ();
1463 /* For debugging. */
1464 static int no_print_functions = 0;
1465 static int no_print_builtins = 0;
1468 print_binding_level (lvl)
1469 struct binding_level *lvl;
1473 fprintf (stderr, " blocks=");
1474 fprintf (stderr, HOST_PTR_PRINTF, lvl->blocks);
1475 fprintf (stderr, " n_incomplete=%d parm_flag=%d keep=%d",
1476 list_length (lvl->incomplete), lvl->parm_flag, lvl->keep);
1477 if (lvl->tag_transparent)
1478 fprintf (stderr, " tag-transparent");
1479 if (lvl->more_cleanups_ok)
1480 fprintf (stderr, " more-cleanups-ok");
1481 if (lvl->have_cleanups)
1482 fprintf (stderr, " have-cleanups");
1483 fprintf (stderr, "\n");
1486 fprintf (stderr, " names:\t");
1487 /* We can probably fit 3 names to a line? */
1488 for (t = lvl->names; t; t = TREE_CHAIN (t))
1490 if (no_print_functions && (TREE_CODE (t) == FUNCTION_DECL))
1492 if (no_print_builtins
1493 && (TREE_CODE (t) == TYPE_DECL)
1494 && (!strcmp (DECL_SOURCE_FILE (t),"<built-in>")))
1497 /* Function decls tend to have longer names. */
1498 if (TREE_CODE (t) == FUNCTION_DECL)
1505 fprintf (stderr, "\n\t");
1508 print_node_brief (stderr, "", t, 0);
1509 if (TREE_CODE (t) == ERROR_MARK)
1513 fprintf (stderr, "\n");
1517 fprintf (stderr, " tags:\t");
1519 for (t = lvl->tags; t; t = TREE_CHAIN (t))
1521 if (TREE_PURPOSE (t) == NULL_TREE)
1523 else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t)))
1530 fprintf (stderr, "\n\t");
1533 if (TREE_PURPOSE (t) == NULL_TREE)
1535 print_node_brief (stderr, "<unnamed-typedef", TREE_VALUE (t), 0);
1536 fprintf (stderr, ">");
1538 else if (TREE_PURPOSE (t) == TYPE_IDENTIFIER (TREE_VALUE (t)))
1539 print_node_brief (stderr, "", TREE_VALUE (t), 0);
1542 print_node_brief (stderr, "<typedef", TREE_PURPOSE (t), 0);
1543 print_node_brief (stderr, "", TREE_VALUE (t), 0);
1544 fprintf (stderr, ">");
1548 fprintf (stderr, "\n");
1552 fprintf (stderr, " shadowed:");
1553 for (t = lvl->shadowed; t; t = TREE_CHAIN (t))
1555 fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
1557 fprintf (stderr, "\n");
1559 if (lvl->class_shadowed)
1561 fprintf (stderr, " class-shadowed:");
1562 for (t = lvl->class_shadowed; t; t = TREE_CHAIN (t))
1564 fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
1566 fprintf (stderr, "\n");
1568 if (lvl->type_shadowed)
1570 fprintf (stderr, " type-shadowed:");
1571 for (t = lvl->type_shadowed; t; t = TREE_CHAIN (t))
1573 fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
1575 fprintf (stderr, "\n");
1580 print_other_binding_stack (stack)
1581 struct binding_level *stack;
1583 struct binding_level *level;
1584 for (level = stack; level != global_binding_level; level = level->level_chain)
1586 fprintf (stderr, "binding level ");
1587 fprintf (stderr, HOST_PTR_PRINTF, level);
1588 fprintf (stderr, "\n");
1589 print_binding_level (level);
1594 print_binding_stack ()
1596 struct binding_level *b;
1597 fprintf (stderr, "current_binding_level=");
1598 fprintf (stderr, HOST_PTR_PRINTF, current_binding_level);
1599 fprintf (stderr, "\nclass_binding_level=");
1600 fprintf (stderr, HOST_PTR_PRINTF, class_binding_level);
1601 fprintf (stderr, "\nglobal_binding_level=");
1602 fprintf (stderr, HOST_PTR_PRINTF, global_binding_level);
1603 fprintf (stderr, "\n");
1604 if (class_binding_level)
1606 for (b = class_binding_level; b; b = b->level_chain)
1607 if (b == current_binding_level)
1610 b = class_binding_level;
1612 b = current_binding_level;
1615 b = current_binding_level;
1616 print_other_binding_stack (b);
1617 fprintf (stderr, "global:\n");
1618 print_binding_level (global_binding_level);
1621 extern char * first_global_object_name;
1623 /* Get a unique name for each call to this routine for unnamed namespaces.
1624 Mostly copied from get_file_function_name. */
1629 static int temp_name_counter = 0;
1633 if (first_global_object_name)
1634 p = first_global_object_name;
1635 else if (main_input_filename)
1636 p = main_input_filename;
1640 #define UNNAMED_NAMESPACE_FORMAT "__%s_%d"
1642 buf = (char *) alloca (sizeof (UNNAMED_NAMESPACE_FORMAT) + strlen (p));
1644 sprintf (buf, UNNAMED_NAMESPACE_FORMAT, p, temp_name_counter++);
1646 /* Don't need to pull weird characters out of global names. */
1647 if (p != first_global_object_name)
1649 for (p = buf+11; *p; p++)
1650 if (! ((*p >= '0' && *p <= '9')
1651 #ifndef NO_DOLLAR_IN_LABEL /* this for `$'; unlikely, but... -- kr */
1654 #ifndef NO_DOT_IN_LABEL /* this for `.'; unlikely, but... */
1657 || (*p >= 'A' && *p <= 'Z')
1658 || (*p >= 'a' && *p <= 'z')))
1662 return get_identifier (buf);
1665 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
1666 select a name that is unique to this compilation unit. */
1669 push_namespace (name)
1672 extern tree current_namespace;
1673 tree old_id = get_namespace_id ();
1679 /* Create a truly ugly name! */
1680 name = get_unique_name ();
1683 d = build_lang_decl (NAMESPACE_DECL, name, void_type_node);
1685 /* Mark them as external, so redeclaration_error_message doesn't think
1686 they are duplicates. */
1688 DECL_EXTERNAL (d) = 1;
1691 if (NAMESPACE_LEVEL (d) == 0)
1693 /* This is new for this compilation unit. */
1695 declare_namespace_level ();
1696 NAMESPACE_LEVEL (d) = current_binding_level;
1699 resume_level (NAMESPACE_LEVEL (d));
1701 /* This code is just is bit old now... */
1702 current_namespace = tree_cons (NULL_TREE, name, current_namespace);
1703 buf = (char *) alloca (4 + (old_id ? IDENTIFIER_LENGTH (old_id) : 0)
1704 + IDENTIFIER_LENGTH (name));
1705 sprintf (buf, "%s%s", old_id ? IDENTIFIER_POINTER (old_id) : "",
1706 IDENTIFIER_POINTER (name));
1707 TREE_PURPOSE (current_namespace) = get_identifier (buf);
1710 /* Pop from the scope of the current namespace. */
1715 extern tree current_namespace;
1717 current_namespace = TREE_CHAIN (current_namespace);
1719 /* Just in case we get out of sync. */
1720 if (! namespace_bindings_p ())
1723 decls = current_binding_level->names;
1725 /* Clear out the meanings of the local variables of this level. */
1727 for (link = decls; link; link = TREE_CHAIN (link))
1729 if (DECL_NAME (link) != NULL_TREE)
1731 /* If the ident. was used or addressed via a local extern decl,
1732 don't forget that fact. */
1733 if (DECL_EXTERNAL (link))
1735 if (TREE_USED (link))
1736 TREE_USED (DECL_ASSEMBLER_NAME (link)) = 1;
1737 if (TREE_ADDRESSABLE (link))
1738 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link)) = 1;
1740 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = NULL_TREE;
1744 /* Restore all name-meanings of the outer levels
1745 that were shadowed by this level. */
1747 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
1748 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1749 for (link = current_binding_level->class_shadowed;
1750 link; link = TREE_CHAIN (link))
1751 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1752 for (link = current_binding_level->type_shadowed;
1753 link; link = TREE_CHAIN (link))
1754 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
1756 /* suspend a level. */
1757 suspend_binding_level ();
1760 /* Subroutines for reverting temporarily to top-level for instantiation
1761 of templates and such. We actually need to clear out the class- and
1762 local-value slots of all identifiers, so that only the global values
1763 are at all visible. Simply setting current_binding_level to the global
1764 scope isn't enough, because more binding levels may be pushed. */
1765 struct saved_scope {
1766 struct binding_level *old_binding_level;
1768 struct saved_scope *prev;
1769 tree class_name, class_type, function_decl;
1770 struct binding_level *class_bindings;
1771 tree *lang_base, *lang_stack, lang_name;
1773 int minimal_parse_mode;
1774 tree last_function_parms;
1775 tree template_parms;
1776 HOST_WIDE_INT processing_template_decl;
1777 tree previous_class_type, previous_class_values;
1779 static struct saved_scope *current_saved_scope;
1782 store_bindings (names, old_bindings)
1783 tree names, old_bindings;
1786 for (t = names; t; t = TREE_CHAIN (t))
1788 tree binding, t1, id;
1790 if (TREE_CODE (t) == TREE_LIST)
1791 id = TREE_PURPOSE (t);
1796 || (!IDENTIFIER_LOCAL_VALUE (id)
1797 && !IDENTIFIER_CLASS_VALUE (id)))
1800 for (t1 = old_bindings; t1; t1 = TREE_CHAIN (t1))
1801 if (TREE_VEC_ELT (t1, 0) == id)
1804 binding = make_tree_vec (4);
1807 my_friendly_assert (TREE_CODE (id) == IDENTIFIER_NODE, 135);
1808 TREE_VEC_ELT (binding, 0) = id;
1809 TREE_VEC_ELT (binding, 1) = IDENTIFIER_TYPE_VALUE (id);
1810 TREE_VEC_ELT (binding, 2) = IDENTIFIER_LOCAL_VALUE (id);
1811 TREE_VEC_ELT (binding, 3) = IDENTIFIER_CLASS_VALUE (id);
1812 IDENTIFIER_LOCAL_VALUE (id) = NULL_TREE;
1813 IDENTIFIER_CLASS_VALUE (id) = NULL_TREE;
1815 TREE_CHAIN (binding) = old_bindings;
1816 old_bindings = binding;
1820 return old_bindings;
1824 maybe_push_to_top_level (pseudo)
1827 extern int current_lang_stacksize;
1828 struct saved_scope *s =
1829 (struct saved_scope *) xmalloc (sizeof (struct saved_scope));
1830 struct binding_level *b = inner_binding_level;
1831 tree old_bindings = NULL_TREE;
1833 if (current_function_decl)
1834 push_cp_function_context (NULL_TREE);
1836 if (previous_class_type)
1837 old_bindings = store_bindings (previous_class_values, old_bindings);
1839 /* Have to include global_binding_level, because class-level decls
1840 aren't listed anywhere useful. */
1841 for (; b; b = b->level_chain)
1845 if (b == global_binding_level || (pseudo && b->pseudo_global))
1848 old_bindings = store_bindings (b->names, old_bindings);
1849 /* We also need to check class_shadowed to save class-level type
1850 bindings, since pushclass doesn't fill in b->names. */
1851 if (b->parm_flag == 2)
1852 old_bindings = store_bindings (b->class_shadowed, old_bindings);
1854 /* Unwind type-value slots back to top level. */
1855 for (t = b->type_shadowed; t; t = TREE_CHAIN (t))
1856 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t), TREE_VALUE (t));
1859 s->old_binding_level = current_binding_level;
1860 current_binding_level = b;
1862 s->class_name = current_class_name;
1863 s->class_type = current_class_type;
1864 s->function_decl = current_function_decl;
1865 s->class_bindings = class_binding_level;
1866 s->lang_stack = current_lang_stack;
1867 s->lang_base = current_lang_base;
1868 s->lang_stacksize = current_lang_stacksize;
1869 s->lang_name = current_lang_name;
1870 s->minimal_parse_mode = minimal_parse_mode;
1871 s->last_function_parms = last_function_parms;
1872 s->template_parms = current_template_parms;
1873 s->processing_template_decl = processing_template_decl;
1874 s->previous_class_type = previous_class_type;
1875 s->previous_class_values = previous_class_values;
1877 current_class_name = current_class_type = NULL_TREE;
1878 current_function_decl = NULL_TREE;
1879 class_binding_level = (struct binding_level *)0;
1880 current_lang_stacksize = 10;
1881 current_lang_stack = current_lang_base
1882 = (tree *) xmalloc (current_lang_stacksize * sizeof (tree));
1883 current_lang_name = lang_name_cplusplus;
1884 strict_prototype = strict_prototypes_lang_cplusplus;
1885 named_labels = NULL_TREE;
1886 minimal_parse_mode = 0;
1887 previous_class_type = previous_class_values = NULL_TREE;
1890 current_template_parms = NULL_TREE;
1891 processing_template_decl = 0;
1894 s->prev = current_saved_scope;
1895 s->old_bindings = old_bindings;
1896 current_saved_scope = s;
1898 push_obstacks (&permanent_obstack, &permanent_obstack);
1902 push_to_top_level ()
1904 maybe_push_to_top_level (0);
1908 pop_from_top_level ()
1910 extern int current_lang_stacksize;
1911 struct saved_scope *s = current_saved_scope;
1914 /* Clear out class-level bindings cache. */
1915 if (previous_class_type)
1918 previous_class_type = NULL_TREE;
1923 current_binding_level = s->old_binding_level;
1924 current_saved_scope = s->prev;
1925 for (t = s->old_bindings; t; t = TREE_CHAIN (t))
1927 tree id = TREE_VEC_ELT (t, 0);
1930 IDENTIFIER_TYPE_VALUE (id) = TREE_VEC_ELT (t, 1);
1931 IDENTIFIER_LOCAL_VALUE (id) = TREE_VEC_ELT (t, 2);
1932 IDENTIFIER_CLASS_VALUE (id) = TREE_VEC_ELT (t, 3);
1935 current_class_name = s->class_name;
1936 current_class_type = s->class_type;
1937 current_function_decl = s->function_decl;
1938 class_binding_level = s->class_bindings;
1939 free (current_lang_base);
1940 current_lang_base = s->lang_base;
1941 current_lang_stack = s->lang_stack;
1942 current_lang_name = s->lang_name;
1943 current_lang_stacksize = s->lang_stacksize;
1944 if (current_lang_name == lang_name_cplusplus)
1945 strict_prototype = strict_prototypes_lang_cplusplus;
1946 else if (current_lang_name == lang_name_c)
1947 strict_prototype = strict_prototypes_lang_c;
1948 minimal_parse_mode = s->minimal_parse_mode;
1949 last_function_parms = s->last_function_parms;
1950 current_template_parms = s->template_parms;
1951 processing_template_decl = s->processing_template_decl;
1952 previous_class_type = s->previous_class_type;
1953 previous_class_values = s->previous_class_values;
1957 if (current_function_decl)
1958 pop_cp_function_context (NULL_TREE);
1961 /* Push a definition of struct, union or enum tag "name".
1962 into binding_level "b". "type" should be the type node,
1963 We assume that the tag "name" is not already defined.
1965 Note that the definition may really be just a forward reference.
1966 In that case, the TYPE_SIZE will be a NULL_TREE.
1968 C++ gratuitously puts all these tags in the name space. */
1970 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
1971 record the shadowed value for this binding contour. TYPE is
1972 the type that ID maps to. */
1975 set_identifier_type_value_with_scope (id, type, b)
1978 struct binding_level *b;
1980 if (b != global_binding_level)
1982 tree old_type_value = IDENTIFIER_TYPE_VALUE (id);
1984 = tree_cons (id, old_type_value, b->type_shadowed);
1986 SET_IDENTIFIER_TYPE_VALUE (id, type);
1989 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
1992 set_identifier_type_value (id, type)
1996 set_identifier_type_value_with_scope (id, type, inner_binding_level);
1999 /* Pop off extraneous binding levels left over due to syntax errors.
2001 We don't pop past namespaces, as they might be valid. */
2006 #ifdef DEBUG_CP_BINDING_LEVELS
2007 fprintf (stderr, "XXX entering pop_everything ()\n");
2009 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
2011 if (class_binding_level)
2012 pop_nested_class (1);
2016 #ifdef DEBUG_CP_BINDING_LEVELS
2017 fprintf (stderr, "XXX leaving pop_everything ()\n");
2021 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2022 Normally put into into the inner-most non-tag-transparent scope,
2023 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2024 The latter is needed for implicit declarations. */
2027 pushtag (name, type, globalize)
2031 register struct binding_level *b;
2035 b = inner_binding_level;
2036 while (b->tag_transparent
2037 || (globalize && b->parm_flag == 2))
2040 if (toplevel_bindings_p ())
2041 b->tags = perm_tree_cons (name, type, b->tags);
2043 b->tags = saveable_tree_cons (name, type, b->tags);
2047 context = type ? TYPE_CONTEXT (type) : NULL_TREE;
2048 if (! context && ! globalize)
2049 context = current_scope ();
2051 c_decl = TREE_CODE (context) == FUNCTION_DECL
2052 ? context : TYPE_MAIN_DECL (context);
2054 /* Do C++ gratuitous typedefing. */
2055 if (IDENTIFIER_TYPE_VALUE (name) != type)
2060 if (b->parm_flag != 2
2061 || TYPE_SIZE (current_class_type) != NULL_TREE)
2063 d = lookup_nested_type (type, c_decl);
2068 d = build_decl (TYPE_DECL, name, type);
2069 SET_DECL_ARTIFICIAL (d);
2070 set_identifier_type_value_with_scope (name, type, b);
2073 d = TYPE_MAIN_DECL (d);
2075 TYPE_NAME (type) = d;
2076 DECL_CONTEXT (d) = context;
2077 if (! globalize && processing_template_decl && IS_AGGR_TYPE (type))
2078 push_template_decl (d);
2080 if (b->parm_flag == 2)
2081 d = pushdecl_class_level (d);
2083 d = pushdecl_with_scope (d, b);
2087 /* Make nested declarations go into class-level scope. */
2089 d = build_decl (TYPE_DECL, name, type);
2090 SET_DECL_ARTIFICIAL (d);
2091 TYPE_NAME (type) = d;
2092 DECL_CONTEXT (d) = context;
2093 if (! globalize && processing_template_decl && IS_AGGR_TYPE (type))
2094 push_template_decl (d);
2096 d = pushdecl_class_level (d);
2100 if (ANON_AGGRNAME_P (name))
2101 DECL_IGNORED_P (d) = 1;
2103 TYPE_CONTEXT (type) = DECL_CONTEXT (d);
2104 DECL_ASSEMBLER_NAME (d)
2105 = get_identifier (build_overload_name (type, 1, 1));
2108 if (b->parm_flag == 2)
2110 TREE_NONLOCAL_FLAG (type) = 1;
2111 if (TYPE_SIZE (current_class_type) == NULL_TREE)
2112 CLASSTYPE_TAGS (current_class_type) = b->tags;
2116 if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
2117 /* Use the canonical TYPE_DECL for this node. */
2118 TYPE_STUB_DECL (type) = TYPE_NAME (type);
2121 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2122 will be the tagged type we just added to the current
2123 binding level. This fake NULL-named TYPE_DECL node helps
2124 dwarfout.c to know when it needs to output a
2125 representation of a tagged type, and it also gives us a
2126 convenient place to record the "scope start" address for
2129 tree d = build_decl (TYPE_DECL, NULL_TREE, type);
2130 TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b);
2134 /* Counter used to create anonymous type names. */
2136 static int anon_cnt = 0;
2138 /* Return an IDENTIFIER which can be used as a name for
2139 anonymous structs and unions. */
2146 sprintf (buf, ANON_AGGRNAME_FORMAT, anon_cnt++);
2147 return get_identifier (buf);
2150 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2151 This keeps dbxout from getting confused. */
2156 register struct binding_level *b;
2158 static int last_cnt = 0;
2160 /* Fast out if no new anon names were declared. */
2161 if (last_cnt == anon_cnt)
2164 b = current_binding_level;
2165 while (b->tag_transparent)
2170 /* A NULL purpose means we have already processed all tags
2171 from here to the end of the list. */
2172 if (TREE_PURPOSE (tags) == NULL_TREE)
2174 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags)))
2175 TREE_PURPOSE (tags) = NULL_TREE;
2176 tags = TREE_CHAIN (tags);
2178 last_cnt = anon_cnt;
2181 /* Subroutine of duplicate_decls: return truthvalue of whether
2182 or not types of these decls match.
2184 For C++, we must compare the parameter list so that `int' can match
2185 `int&' in a parameter position, but `int&' is not confused with
2189 decls_match (newdecl, olddecl)
2190 tree newdecl, olddecl;
2194 if (TREE_CODE (newdecl) == FUNCTION_DECL
2195 && TREE_CODE (olddecl) == FUNCTION_DECL)
2197 tree f1 = TREE_TYPE (newdecl);
2198 tree f2 = TREE_TYPE (olddecl);
2199 tree p1 = TYPE_ARG_TYPES (f1);
2200 tree p2 = TYPE_ARG_TYPES (f2);
2202 /* When we parse a static member function definition,
2203 we put together a FUNCTION_DECL which thinks its type
2204 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2206 if (TREE_CODE (f1) == METHOD_TYPE && DECL_STATIC_FUNCTION_P (olddecl))
2207 revert_static_member_fn (&newdecl, &f1, &p1);
2208 else if (TREE_CODE (f2) == METHOD_TYPE
2209 && DECL_STATIC_FUNCTION_P (newdecl))
2210 revert_static_member_fn (&olddecl, &f2, &p2);
2212 /* Here we must take care of the case where new default
2213 parameters are specified. Also, warn if an old
2214 declaration becomes ambiguous because default
2215 parameters may cause the two to be ambiguous. */
2216 if (TREE_CODE (f1) != TREE_CODE (f2))
2218 if (TREE_CODE (f1) == OFFSET_TYPE)
2219 cp_compiler_error ("`%D' redeclared as member function", newdecl);
2221 cp_compiler_error ("`%D' redeclared as non-member function", newdecl);
2225 if (comptypes (TREE_TYPE (f1), TREE_TYPE (f2), 1))
2227 if (! strict_prototypes_lang_c && DECL_LANGUAGE (olddecl) == lang_c
2230 types_match = self_promoting_args_p (p1);
2231 if (p1 == void_list_node)
2232 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2234 else if (!strict_prototypes_lang_c && DECL_LANGUAGE (olddecl)==lang_c
2235 && DECL_LANGUAGE (newdecl) == lang_c && p1 == NULL_TREE)
2237 types_match = self_promoting_args_p (p2);
2238 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2241 types_match = compparms (p1, p2, 3);
2246 else if (TREE_CODE (newdecl) == TEMPLATE_DECL
2247 && TREE_CODE (olddecl) == TEMPLATE_DECL)
2249 tree newargs = DECL_TEMPLATE_PARMS (newdecl);
2250 tree oldargs = DECL_TEMPLATE_PARMS (olddecl);
2251 int i, len = TREE_VEC_LENGTH (newargs);
2253 if (TREE_VEC_LENGTH (oldargs) != len)
2256 for (i = 0; i < len; i++)
2258 tree newarg = TREE_VALUE (TREE_VEC_ELT (newargs, i));
2259 tree oldarg = TREE_VALUE (TREE_VEC_ELT (oldargs, i));
2260 if (TREE_CODE (newarg) != TREE_CODE (oldarg))
2262 else if (TREE_CODE (newarg) == TYPE_DECL)
2264 else if (! comptypes (TREE_TYPE (newarg), TREE_TYPE (oldarg), 1))
2268 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2271 types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl),
2272 DECL_TEMPLATE_RESULT (newdecl));
2276 if (TREE_TYPE (newdecl) == error_mark_node)
2277 types_match = TREE_TYPE (olddecl) == error_mark_node;
2278 else if (TREE_TYPE (olddecl) == NULL_TREE)
2279 types_match = TREE_TYPE (newdecl) == NULL_TREE;
2280 else if (TREE_TYPE (newdecl) == NULL_TREE)
2282 /* Qualifiers must match, and they may be present on either, the type
2284 else if ((TREE_READONLY (newdecl)
2285 || TYPE_READONLY (TREE_TYPE (newdecl)))
2286 == (TREE_READONLY (olddecl)
2287 || TYPE_READONLY (TREE_TYPE (olddecl)))
2288 && (TREE_THIS_VOLATILE (newdecl)
2289 || TYPE_VOLATILE (TREE_TYPE (newdecl)))
2290 == (TREE_THIS_VOLATILE (olddecl)
2291 || TYPE_VOLATILE (TREE_TYPE (olddecl))))
2292 types_match = comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl)),
2293 TYPE_MAIN_VARIANT (TREE_TYPE (olddecl)), 1);
2301 /* If NEWDECL is `static' and an `extern' was seen previously,
2302 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2303 information about previous usage as an `extern'.)
2305 Note that this does not apply to the C++ case of declaring
2306 a variable `extern const' and then later `const'.
2308 Don't complain about built-in functions, since they are beyond
2309 the user's control. */
2312 warn_extern_redeclared_static (newdecl, olddecl)
2313 tree newdecl, olddecl;
2317 static char *explicit_extern_static_warning
2318 = "`%D' was declared `extern' and later `static'";
2319 static char *implicit_extern_static_warning
2320 = "`%D' was declared implicitly `extern' and later `static'";
2322 if (TREE_CODE (newdecl) == TYPE_DECL)
2325 name = DECL_ASSEMBLER_NAME (newdecl);
2326 if (TREE_PUBLIC (name) && DECL_THIS_STATIC (newdecl))
2328 /* It's okay to redeclare an ANSI built-in function as static,
2329 or to declare a non-ANSI built-in function as anything. */
2330 if (! (TREE_CODE (newdecl) == FUNCTION_DECL
2331 && olddecl != NULL_TREE
2332 && TREE_CODE (olddecl) == FUNCTION_DECL
2333 && (DECL_BUILT_IN (olddecl)
2334 || DECL_BUILT_IN_NONANSI (olddecl))))
2336 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name)
2337 ? implicit_extern_static_warning
2338 : explicit_extern_static_warning, newdecl);
2339 if (olddecl != NULL_TREE)
2340 cp_pedwarn_at ("previous declaration of `%D'", olddecl);
2345 /* Handle when a new declaration NEWDECL has the same name as an old
2346 one OLDDECL in the same binding contour. Prints an error message
2349 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2350 Otherwise, return 0. */
2353 duplicate_decls (newdecl, olddecl)
2354 register tree newdecl, olddecl;
2356 extern struct obstack permanent_obstack;
2357 unsigned olddecl_uid = DECL_UID (olddecl);
2358 int olddecl_friend = 0, types_match = 0;
2359 int new_defines_function;
2361 if (newdecl == olddecl)
2364 if (TREE_CODE_CLASS (TREE_CODE (olddecl)) == 'd')
2365 DECL_MACHINE_ATTRIBUTES (newdecl) = DECL_MACHINE_ATTRIBUTES (olddecl);
2367 types_match = decls_match (newdecl, olddecl);
2369 if (TREE_CODE (olddecl) != TREE_LIST)
2370 olddecl_friend = DECL_LANG_SPECIFIC (olddecl) && DECL_FRIEND_P (olddecl);
2372 /* If either the type of the new decl or the type of the old decl is an
2373 error_mark_node, then that implies that we have already issued an
2374 error (earlier) for some bogus type specification, and in that case,
2375 it is rather pointless to harass the user with yet more error message
2376 about the same declaration, so well just pretent the types match here. */
2377 if ((TREE_TYPE (newdecl)
2378 && TREE_CODE (TREE_TYPE (newdecl)) == ERROR_MARK)
2379 || (TREE_TYPE (olddecl)
2380 && TREE_CODE (TREE_TYPE (olddecl)) == ERROR_MARK))
2383 if (TREE_CODE (olddecl) == FUNCTION_DECL
2384 && DECL_ARTIFICIAL (olddecl)
2385 && (DECL_BUILT_IN (olddecl) || DECL_BUILT_IN_NONANSI (olddecl)))
2387 /* If you declare a built-in or predefined function name as static,
2388 the old definition is overridden, but optionally warn this was a
2389 bad choice of name. Ditto for overloads. */
2390 if (! DECL_PUBLIC (newdecl)
2391 || (TREE_CODE (newdecl) == FUNCTION_DECL
2392 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)))
2395 cp_warning ("shadowing %s function `%#D'",
2396 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
2398 /* Discard the old built-in function. */
2401 else if (! types_match)
2403 if (TREE_CODE (newdecl) != FUNCTION_DECL)
2405 /* If the built-in is not ansi, then programs can override
2406 it even globally without an error. */
2407 if (! DECL_BUILT_IN (olddecl))
2408 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2412 cp_error ("declaration of `%#D'", newdecl);
2413 cp_error ("conflicts with built-in declaration `%#D'",
2419 cp_warning ("declaration of `%#D'", newdecl);
2420 cp_warning ("conflicts with built-in declaration `%#D'",
2424 else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
2426 if ((TREE_CODE (newdecl) == FUNCTION_DECL
2427 && DECL_FUNCTION_TEMPLATE_P (olddecl))
2428 || (TREE_CODE (olddecl) == FUNCTION_DECL
2429 && DECL_FUNCTION_TEMPLATE_P (newdecl)))
2432 cp_error ("`%#D' redeclared as different kind of symbol", newdecl);
2433 if (TREE_CODE (olddecl) == TREE_LIST)
2434 olddecl = TREE_VALUE (olddecl);
2435 cp_error_at ("previous declaration of `%#D'", olddecl);
2437 /* New decl is completely inconsistent with the old one =>
2438 tell caller to replace the old one. */
2442 else if (!types_match)
2444 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2446 /* The name of a class template may not be declared to refer to
2447 any other template, class, function, object, namespace, value,
2448 or type in the same scope. */
2449 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
2450 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2452 cp_error ("declaration of template `%#D'", newdecl);
2453 cp_error_at ("conflicts with previous declaration `%#D'",
2456 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
2457 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
2458 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
2459 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))), 3))
2461 cp_error ("new declaration `%#D'", newdecl);
2462 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2466 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2468 if (DECL_LANGUAGE (newdecl) == lang_c
2469 && DECL_LANGUAGE (olddecl) == lang_c)
2471 cp_error ("declaration of C function `%#D' conflicts with",
2473 cp_error_at ("previous declaration `%#D' here", olddecl);
2475 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
2476 TYPE_ARG_TYPES (TREE_TYPE (olddecl)), 3))
2478 cp_error ("new declaration `%#D'", newdecl);
2479 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2485 /* Already complained about this, so don't do so again. */
2486 else if (current_class_type == NULL_TREE
2487 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type)
2489 cp_error ("conflicting types for `%#D'", newdecl);
2490 cp_error_at ("previous declaration as `%#D'", olddecl);
2495 char *errmsg = redeclaration_error_message (newdecl, olddecl);
2498 cp_error (errmsg, newdecl);
2499 if (DECL_NAME (olddecl) != NULL_TREE)
2500 cp_error_at ((DECL_INITIAL (olddecl)
2501 && current_binding_level == global_binding_level)
2502 ? "`%#D' previously defined here"
2503 : "`%#D' previously declared here", olddecl);
2505 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2506 && DECL_INITIAL (olddecl) != NULL_TREE
2507 && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE
2508 && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE)
2510 /* Prototype decl follows defn w/o prototype. */
2511 cp_warning_at ("prototype for `%#D'", newdecl);
2512 cp_warning_at ("follows non-prototype definition here", olddecl);
2514 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2515 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
2517 /* extern "C" int foo ();
2518 int foo () { bar (); }
2520 if (current_lang_stack == current_lang_base)
2521 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
2524 cp_error_at ("previous declaration of `%#D' with %L linkage",
2525 olddecl, DECL_LANGUAGE (olddecl));
2526 cp_error ("conflicts with new declaration with %L linkage",
2527 DECL_LANGUAGE (newdecl));
2531 if (TREE_CODE (olddecl) == FUNCTION_DECL
2532 && ! DECL_USE_TEMPLATE (olddecl))
2534 tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
2535 tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
2538 if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
2539 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
2541 for (; t1 && t1 != void_list_node;
2542 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
2543 if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
2545 if (1 == simple_cst_equal (TREE_PURPOSE (t1),
2550 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2552 cp_pedwarn_at ("after previous specification in `%#D'",
2558 cp_error ("default argument given for parameter %d of `%#D'",
2560 cp_error_at ("conflicts with previous specification in `%#D'",
2565 if (DECL_THIS_INLINE (newdecl) && ! DECL_THIS_INLINE (olddecl)
2566 && TREE_ADDRESSABLE (olddecl) && warn_inline)
2568 cp_warning ("`%#D' was used before it was declared inline",
2570 cp_warning_at ("previous non-inline declaration here",
2574 /* These bits are logically part of the type for non-functions. */
2575 else if (TREE_READONLY (newdecl) != TREE_READONLY (olddecl)
2576 || TREE_THIS_VOLATILE (newdecl) != TREE_THIS_VOLATILE (olddecl))
2578 cp_pedwarn ("type qualifiers for `%#D'", newdecl);
2579 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl);
2583 /* If new decl is `static' and an `extern' was seen previously,
2585 warn_extern_redeclared_static (newdecl, olddecl);
2587 /* We have committed to returning 1 at this point. */
2588 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2590 /* Now that functions must hold information normally held
2591 by field decls, there is extra work to do so that
2592 declaration information does not get destroyed during
2594 if (DECL_VINDEX (olddecl))
2595 DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
2596 if (DECL_CONTEXT (olddecl))
2597 DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
2598 if (DECL_CLASS_CONTEXT (olddecl))
2599 DECL_CLASS_CONTEXT (newdecl) = DECL_CLASS_CONTEXT (olddecl);
2600 if (DECL_CHAIN (newdecl) == NULL_TREE)
2601 DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl);
2602 if (DECL_PENDING_INLINE_INFO (newdecl) == (struct pending_inline *)0)
2603 DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
2604 DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
2605 DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
2606 DECL_ABSTRACT_VIRTUAL_P (newdecl) |= DECL_ABSTRACT_VIRTUAL_P (olddecl);
2609 /* Deal with C++: must preserve virtual function table size. */
2610 if (TREE_CODE (olddecl) == TYPE_DECL)
2612 register tree newtype = TREE_TYPE (newdecl);
2613 register tree oldtype = TREE_TYPE (olddecl);
2615 if (newtype != error_mark_node && oldtype != error_mark_node
2616 && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
2618 CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype);
2619 CLASSTYPE_FRIEND_CLASSES (newtype)
2620 = CLASSTYPE_FRIEND_CLASSES (oldtype);
2624 /* Special handling ensues if new decl is a function definition. */
2625 new_defines_function = (TREE_CODE (newdecl) == FUNCTION_DECL
2626 && DECL_INITIAL (newdecl) != NULL_TREE);
2628 /* Optionally warn about more than one declaration for the same name,
2629 but don't warn about a function declaration followed by a definition. */
2630 if (warn_redundant_decls
2631 && ! DECL_ARTIFICIAL (olddecl)
2632 && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
2633 /* Don't warn about extern decl followed by (tentative) definition. */
2634 && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl)))
2636 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl);
2637 cp_warning_at ("previous declaration of `%D'", olddecl);
2640 /* Copy all the DECL_... slots specified in the new decl
2641 except for any that we copy here from the old type. */
2643 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2645 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
2646 DECL_TEMPLATE_RESULT (olddecl) = DECL_TEMPLATE_RESULT (newdecl);
2647 DECL_TEMPLATE_PARMS (olddecl) = DECL_TEMPLATE_PARMS (newdecl);
2653 /* Automatically handles default parameters. */
2654 tree oldtype = TREE_TYPE (olddecl);
2657 /* Make sure we put the new type in the same obstack as the old one. */
2659 push_obstacks (TYPE_OBSTACK (oldtype), TYPE_OBSTACK (oldtype));
2662 push_obstacks_nochange ();
2663 end_temporary_allocation ();
2666 /* Merge the data types specified in the two decls. */
2667 newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
2669 if (TREE_CODE (newdecl) == VAR_DECL)
2670 DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
2671 /* Do this after calling `common_type' so that default
2672 parameters don't confuse us. */
2673 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2674 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))
2675 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl))))
2677 TREE_TYPE (newdecl) = build_exception_variant (newtype,
2678 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)));
2679 TREE_TYPE (olddecl) = build_exception_variant (newtype,
2680 TYPE_RAISES_EXCEPTIONS (oldtype));
2682 if (! compexcepttypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
2684 cp_error ("declaration of `%D' throws different exceptions...",
2686 cp_error_at ("...from previous declaration here", olddecl);
2689 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
2691 /* Lay the type out, unless already done. */
2692 if (oldtype != TREE_TYPE (newdecl)
2693 && TREE_TYPE (newdecl) != error_mark_node
2694 && !(processing_template_decl && uses_template_parms (newdecl)))
2695 layout_type (TREE_TYPE (newdecl));
2697 if ((TREE_CODE (newdecl) == VAR_DECL
2698 || TREE_CODE (newdecl) == PARM_DECL
2699 || TREE_CODE (newdecl) == RESULT_DECL
2700 || TREE_CODE (newdecl) == FIELD_DECL
2701 || TREE_CODE (newdecl) == TYPE_DECL)
2702 && !(processing_template_decl && uses_template_parms (newdecl)))
2703 layout_decl (newdecl, 0);
2705 /* Merge the type qualifiers. */
2706 if (TREE_READONLY (newdecl))
2707 TREE_READONLY (olddecl) = 1;
2708 if (TREE_THIS_VOLATILE (newdecl))
2709 TREE_THIS_VOLATILE (olddecl) = 1;
2711 /* Merge the initialization information. */
2712 if (DECL_INITIAL (newdecl) == NULL_TREE
2713 && DECL_INITIAL (olddecl) != NULL_TREE)
2715 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
2716 DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl);
2717 DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl);
2720 /* Merge the section attribute.
2721 We want to issue an error if the sections conflict but that must be
2722 done later in decl_attributes since we are called before attributes
2724 if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
2725 DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
2727 /* Keep the old rtl since we can safely use it, unless it's the
2728 call to abort() used for abstract virtuals. */
2729 if ((DECL_LANG_SPECIFIC (olddecl)
2730 && !DECL_ABSTRACT_VIRTUAL_P (olddecl))
2731 || DECL_RTL (olddecl) != DECL_RTL (abort_fndecl))
2732 DECL_RTL (newdecl) = DECL_RTL (olddecl);
2736 /* If cannot merge, then use the new type and qualifiers,
2737 and don't preserve the old rtl. */
2740 /* Clean out any memory we had of the old declaration. */
2741 tree oldstatic = value_member (olddecl, static_aggregates);
2743 TREE_VALUE (oldstatic) = error_mark_node;
2745 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
2746 TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
2747 TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
2748 TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
2751 /* Merge the storage class information. */
2752 DECL_WEAK (newdecl) |= DECL_WEAK (olddecl);
2753 DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl);
2754 TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
2755 TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
2756 if (! DECL_EXTERNAL (olddecl))
2757 DECL_EXTERNAL (newdecl) = 0;
2759 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2760 DECL_C_STATIC (newdecl) |= DECL_C_STATIC (olddecl);
2762 if (DECL_LANG_SPECIFIC (newdecl))
2764 DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
2765 DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
2768 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2770 DECL_THIS_INLINE (newdecl) |= DECL_THIS_INLINE (olddecl);
2772 /* If either decl says `inline', this fn is inline, unless its
2773 definition was passed already. */
2774 if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE)
2775 DECL_INLINE (olddecl) = 1;
2776 DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
2780 DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl);
2781 DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl);
2782 DECL_RTL (olddecl) = DECL_RTL (newdecl);
2784 if (! types_match || new_defines_function)
2786 /* These need to be copied so that the names are available. */
2787 DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
2788 DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
2790 if (new_defines_function)
2791 /* If defining a function declared with other language
2792 linkage, use the previously declared language linkage. */
2793 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
2796 /* If redeclaring a builtin function, and not a definition,
2797 it stays built in. */
2798 if (DECL_BUILT_IN (olddecl))
2800 DECL_BUILT_IN (newdecl) = 1;
2801 DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
2802 /* If we're keeping the built-in definition, keep the rtl,
2803 regardless of declaration matches. */
2804 DECL_RTL (newdecl) = DECL_RTL (olddecl);
2807 DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl);
2809 DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
2810 if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl)))
2811 /* Previously saved insns go together with
2812 the function's previous definition. */
2813 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
2814 /* Don't clear out the arguments if we're redefining a function. */
2815 if (DECL_ARGUMENTS (olddecl))
2816 DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
2818 if (DECL_LANG_SPECIFIC (olddecl))
2819 DECL_MAIN_VARIANT (newdecl) = DECL_MAIN_VARIANT (olddecl);
2822 if (TREE_CODE (newdecl) == NAMESPACE_DECL)
2824 NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
2827 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2829 DECL_TEMPLATE_INSTANTIATIONS (newdecl)
2830 = DECL_TEMPLATE_INSTANTIATIONS (olddecl);
2831 if (DECL_CHAIN (newdecl) == NULL_TREE)
2832 DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl);
2835 /* Now preserve various other info from the definition. */
2836 TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
2837 TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
2838 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
2839 DECL_ASSEMBLER_NAME (newdecl) = DECL_ASSEMBLER_NAME (olddecl);
2841 /* Don't really know how much of the language-specific
2842 values we should copy from old to new. */
2843 if (DECL_LANG_SPECIFIC (olddecl))
2845 DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
2846 DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl);
2847 DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
2848 if (DECL_TEMPLATE_INFO (newdecl) == NULL_TREE)
2850 DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
2851 DECL_USE_TEMPLATE (newdecl) = DECL_USE_TEMPLATE (olddecl);
2855 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2858 struct lang_decl *ol = DECL_LANG_SPECIFIC (olddecl);
2859 struct lang_decl *nl = DECL_LANG_SPECIFIC (newdecl);
2861 function_size = sizeof (struct tree_decl);
2863 bcopy ((char *) newdecl + sizeof (struct tree_common),
2864 (char *) olddecl + sizeof (struct tree_common),
2865 function_size - sizeof (struct tree_common));
2867 /* Can we safely free the storage used by newdecl? */
2869 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
2870 & ~ obstack_alignment_mask (&permanent_obstack))
2872 if ((char *)newdecl + ROUND (function_size)
2873 + ROUND (sizeof (struct lang_decl))
2874 == obstack_next_free (&permanent_obstack))
2876 DECL_MAIN_VARIANT (newdecl) = olddecl;
2877 DECL_LANG_SPECIFIC (olddecl) = ol;
2878 bcopy ((char *)nl, (char *)ol, sizeof (struct lang_decl));
2880 obstack_free (&permanent_obstack, newdecl);
2882 else if (LANG_DECL_PERMANENT (ol) && ol != nl)
2884 if (DECL_MAIN_VARIANT (olddecl) == olddecl)
2886 /* Save these lang_decls that would otherwise be lost. */
2887 extern tree free_lang_decl_chain;
2888 tree free_lang_decl = (tree) ol;
2890 if (DECL_LANG_SPECIFIC (olddecl) == ol)
2893 TREE_CHAIN (free_lang_decl) = free_lang_decl_chain;
2894 free_lang_decl_chain = free_lang_decl;
2904 bcopy ((char *) newdecl + sizeof (struct tree_common),
2905 (char *) olddecl + sizeof (struct tree_common),
2906 sizeof (struct tree_decl) - sizeof (struct tree_common)
2907 + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *));
2910 DECL_UID (olddecl) = olddecl_uid;
2912 DECL_FRIEND_P (olddecl) = 1;
2917 /* Record a decl-node X as belonging to the current lexical scope.
2918 Check for errors (such as an incompatible declaration for the same
2919 name already seen in the same scope).
2921 Returns either X or an old decl for the same name.
2922 If an old decl is returned, it may have been smashed
2923 to agree with what X says. */
2930 register tree name = DECL_ASSEMBLER_NAME (x);
2931 register struct binding_level *b = current_binding_level;
2933 if (x != current_function_decl
2934 /* Don't change DECL_CONTEXT of virtual methods. */
2935 && (TREE_CODE (x) != FUNCTION_DECL || !DECL_VIRTUAL_P (x))
2936 && ! DECL_CONTEXT (x))
2937 DECL_CONTEXT (x) = current_function_decl;
2938 /* A local declaration for a function doesn't constitute nesting. */
2939 if (TREE_CODE (x) == FUNCTION_DECL && DECL_INITIAL (x) == 0)
2940 DECL_CONTEXT (x) = 0;
2942 /* Type are looked up using the DECL_NAME, as that is what the rest of the
2943 compiler wants to use. */
2944 if (TREE_CODE (x) == TYPE_DECL || TREE_CODE (x) == VAR_DECL
2945 || TREE_CODE (x) == NAMESPACE_DECL)
2946 name = DECL_NAME (x);
2951 /* Not needed...see below. */
2956 t = lookup_name_current_level (name);
2957 if (t == error_mark_node)
2959 /* error_mark_node is 0 for a while during initialization! */
2961 cp_error_at ("`%#D' used prior to declaration", x);
2964 else if (t != NULL_TREE)
2967 /* This is turned off until I have time to do it right (bpk). */
2968 /* With the code below that uses it... */
2969 file = DECL_SOURCE_FILE (t);
2970 line = DECL_SOURCE_LINE (t);
2972 if (TREE_CODE (t) == PARM_DECL)
2974 if (DECL_CONTEXT (t) == NULL_TREE)
2975 fatal ("parse errors have confused me too much");
2977 /* Check for duplicate params. */
2978 if (duplicate_decls (x, t))
2981 else if (((TREE_CODE (x) == FUNCTION_DECL && DECL_LANGUAGE (x) == lang_c)
2982 || DECL_FUNCTION_TEMPLATE_P (x))
2983 && is_overloaded_fn (t))
2984 /* don't do anything just yet */;
2985 else if (t == wchar_decl_node)
2987 if (pedantic && ! DECL_IN_SYSTEM_HEADER (x))
2988 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x));
2990 /* Throw away the redeclaration. */
2993 else if (TREE_CODE (t) != TREE_CODE (x))
2995 if ((TREE_CODE (t) == TYPE_DECL && DECL_ARTIFICIAL (t)
2996 && TREE_CODE (x) != TYPE_DECL
2997 && ! (TREE_CODE (x) == TEMPLATE_DECL
2998 && TREE_CODE (DECL_TEMPLATE_RESULT (x)) == TYPE_DECL))
2999 || (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3000 && TREE_CODE (t) != TYPE_DECL
3001 && ! (TREE_CODE (t) == TEMPLATE_DECL
3002 && (TREE_CODE (DECL_TEMPLATE_RESULT (t))
3005 /* We do nothing special here, because C++ does such nasty
3006 things with TYPE_DECLs. Instead, just let the TYPE_DECL
3007 get shadowed, and know that if we need to find a TYPE_DECL
3008 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
3009 slot of the identifier. */
3012 else if (duplicate_decls (x, t))
3015 else if (duplicate_decls (x, t))
3018 /* This is turned off until I have time to do it right (bpk). */
3020 /* Also warn if they did a prototype with `static' on it, but
3021 then later left the `static' off. */
3022 if (! TREE_PUBLIC (name) && TREE_PUBLIC (x))
3024 if (DECL_LANG_SPECIFIC (t) && DECL_FRIEND_P (t))
3029 cp_warning ("`static' missing from declaration of `%D'",
3031 warning_with_file_and_line (file, line,
3032 "previous declaration of `%s'",
3033 decl_as_string (t, 0));
3036 /* Now fix things so it'll do what they expect. */
3037 if (current_function_decl)
3038 TREE_PUBLIC (current_function_decl) = 0;
3040 /* Due to interference in memory reclamation (X may be
3041 obstack-deallocated at this point), we must guard against
3042 one really special case. [jason: This should be handled
3043 by start_function] */
3044 if (current_function_decl == x)
3045 current_function_decl = t;
3047 if (TREE_CODE (t) == TYPE_DECL)
3048 SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t));
3049 else if (TREE_CODE (t) == FUNCTION_DECL)
3050 check_default_args (t);
3056 if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_FUNCTION_MEMBER_P (x))
3058 t = push_overloaded_decl (x, 1);
3059 if (t != x || DECL_LANGUAGE (x) == lang_c)
3062 else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_CONTEXT (x) == NULL_TREE)
3063 return push_overloaded_decl (x, 0);
3065 /* If declaring a type as a typedef, and the type has no known
3066 typedef name, install this TYPE_DECL as its typedef name. */
3067 if (TREE_CODE (x) == TYPE_DECL)
3069 tree type = TREE_TYPE (x);
3070 tree name = (type != error_mark_node) ? TYPE_NAME (type) : x;
3072 if (name == NULL_TREE || TREE_CODE (name) != TYPE_DECL)
3074 /* If these are different names, and we're at the global
3075 binding level, make two equivalent definitions. */
3077 if (global_bindings_p ())
3078 TYPE_NAME (type) = x;
3080 my_friendly_assert (TREE_CODE (name) == TYPE_DECL, 140);
3082 if (type != error_mark_node
3084 && TYPE_IDENTIFIER (type))
3085 set_identifier_type_value_with_scope (DECL_NAME (x), type, b);
3088 /* Multiple external decls of the same identifier ought to match.
3090 We get warnings about inline functions where they are defined.
3091 We get warnings about other functions from push_overloaded_decl.
3093 Avoid duplicate warnings where they are used. */
3094 if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL)
3098 if (IDENTIFIER_GLOBAL_VALUE (name) != NULL_TREE
3099 && (DECL_EXTERNAL (IDENTIFIER_GLOBAL_VALUE (name))
3100 || TREE_PUBLIC (IDENTIFIER_GLOBAL_VALUE (name))))
3101 decl = IDENTIFIER_GLOBAL_VALUE (name);
3106 /* If different sort of thing, we already gave an error. */
3107 && TREE_CODE (decl) == TREE_CODE (x)
3108 && ! comptypes (TREE_TYPE (x), TREE_TYPE (decl), 1))
3110 cp_pedwarn ("type mismatch with previous external decl", x);
3111 cp_pedwarn_at ("previous external decl of `%#D'", decl);
3115 /* This name is new in its binding level.
3116 Install the new declaration and return it. */
3117 if (b == global_binding_level)
3119 /* Install a global value. */
3121 /* If the first global decl has external linkage,
3122 warn if we later see static one. */
3123 if (IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE && DECL_PUBLIC (x))
3124 TREE_PUBLIC (name) = 1;
3126 /* Don't install an artificial TYPE_DECL if we already have
3127 another _DECL with that name. */
3128 if (TREE_CODE (x) != TYPE_DECL
3130 || ! DECL_ARTIFICIAL (x))
3131 IDENTIFIER_GLOBAL_VALUE (name) = x;
3133 /* Don't forget if the function was used via an implicit decl. */
3134 if (IDENTIFIER_IMPLICIT_DECL (name)
3135 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name)))
3138 /* Don't forget if its address was taken in that way. */
3139 if (IDENTIFIER_IMPLICIT_DECL (name)
3140 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name)))
3141 TREE_ADDRESSABLE (x) = 1;
3143 /* Warn about mismatches against previous implicit decl. */
3144 if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE
3145 /* If this real decl matches the implicit, don't complain. */
3146 && ! (TREE_CODE (x) == FUNCTION_DECL
3147 && TREE_TYPE (TREE_TYPE (x)) == integer_type_node))
3149 ("`%D' was previously implicitly declared to return `int'", x);
3151 /* If new decl is `static' and an `extern' was seen previously,
3153 if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t))
3154 warn_extern_redeclared_static (x, t);
3158 /* Here to install a non-global value. */
3159 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
3160 tree oldglobal = IDENTIFIER_GLOBAL_VALUE (name);
3162 /* Don't install an artificial TYPE_DECL if we already have
3163 another _DECL with that name. */
3164 if (TREE_CODE (x) != TYPE_DECL
3166 || ! DECL_ARTIFICIAL (x))
3168 b->shadowed = tree_cons (name, oldlocal, b->shadowed);
3169 IDENTIFIER_LOCAL_VALUE (name) = x;
3172 /* If this is a TYPE_DECL, push it into the type value slot. */
3173 if (TREE_CODE (x) == TYPE_DECL)
3174 set_identifier_type_value_with_scope (name, TREE_TYPE (x), b);
3176 /* Clear out any TYPE_DECL shadowed by a namespace so that
3177 we won't think this is a type. The C struct hack doesn't
3178 go through namespaces. */
3179 if (TREE_CODE (x) == NAMESPACE_DECL)
3180 set_identifier_type_value_with_scope (name, NULL_TREE, b);
3182 /* If this is an extern function declaration, see if we
3183 have a global definition or declaration for the function. */
3184 if (oldlocal == NULL_TREE
3185 && DECL_EXTERNAL (x)
3186 && oldglobal != NULL_TREE
3187 && TREE_CODE (x) == FUNCTION_DECL
3188 && TREE_CODE (oldglobal) == FUNCTION_DECL)
3190 /* We have one. Their types must agree. */
3191 if (decls_match (x, oldglobal))
3195 cp_warning ("extern declaration of `%#D' doesn't match", x);
3196 cp_warning_at ("global declaration `%#D'", oldglobal);
3199 /* If we have a local external declaration,
3200 and no file-scope declaration has yet been seen,
3201 then if we later have a file-scope decl it must not be static. */
3202 if (oldlocal == NULL_TREE
3203 && oldglobal == NULL_TREE
3204 && DECL_EXTERNAL (x)
3207 TREE_PUBLIC (name) = 1;
3210 if (DECL_FROM_INLINE (x))
3211 /* Inline decls shadow nothing. */;
3213 /* Warn if shadowing an argument at the top level of the body. */
3214 else if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x)
3215 && TREE_CODE (oldlocal) == PARM_DECL
3216 && TREE_CODE (x) != PARM_DECL)
3218 /* Go to where the parms should be and see if we
3220 struct binding_level *b = current_binding_level->level_chain;
3226 if (b->parm_flag == 1)
3227 cp_error ("declaration of `%#D' shadows a parameter", name);
3229 else if (warn_shadow && oldlocal != NULL_TREE && b->is_for_scope
3230 && !DECL_DEAD_FOR_LOCAL (oldlocal))
3232 warning ("variable `%s' shadows local",
3233 IDENTIFIER_POINTER (name));
3234 cp_warning_at (" this is the shadowed declaration", oldlocal);
3236 /* Maybe warn if shadowing something else. */
3237 else if (warn_shadow && !DECL_EXTERNAL (x)
3238 /* No shadow warnings for internally generated vars. */
3239 && ! DECL_ARTIFICIAL (x)
3240 /* No shadow warnings for vars made for inlining. */
3241 && ! DECL_FROM_INLINE (x))
3243 char *warnstring = NULL;
3245 if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL)
3246 warnstring = "declaration of `%s' shadows a parameter";
3247 else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE
3248 && current_class_ptr
3249 && !TREE_STATIC (name))
3250 warnstring = "declaration of `%s' shadows a member of `this'";
3251 else if (oldlocal != NULL_TREE)
3252 warnstring = "declaration of `%s' shadows previous local";
3253 else if (oldglobal != NULL_TREE)
3254 warnstring = "declaration of `%s' shadows global declaration";
3257 warning (warnstring, IDENTIFIER_POINTER (name));
3261 if (TREE_CODE (x) == FUNCTION_DECL)
3262 check_default_args (x);
3264 /* Keep count of variables in this level with incomplete type. */
3265 if (TREE_CODE (x) == VAR_DECL
3266 && TREE_TYPE (x) != error_mark_node
3267 && ((TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE
3268 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE))
3269 /* RTTI TD entries are created while defining the type_info. */
3270 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x))
3271 && TYPE_BEING_DEFINED (TREE_TYPE (x)))))
3272 b->incomplete = tree_cons (NULL_TREE, x, b->incomplete);
3275 /* Put decls on list in reverse order.
3276 We will reverse them later if necessary. */
3277 TREE_CHAIN (x) = b->names;
3279 if (! (b != global_binding_level || TREE_PERMANENT (x)))
3280 my_friendly_abort (124);
3285 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3286 caller to set DECL_CONTEXT properly. */
3289 pushdecl_with_scope (x, level)
3291 struct binding_level *level;
3293 register struct binding_level *b = current_binding_level;
3294 tree function_decl = current_function_decl;
3296 current_function_decl = NULL_TREE;
3297 current_binding_level = level;
3299 current_binding_level = b;
3300 current_function_decl = function_decl;
3304 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3308 pushdecl_top_level (x)
3311 register struct binding_level *b = inner_binding_level;
3312 register tree t = pushdecl_with_scope (x, global_binding_level);
3314 /* Now, the type_shadowed stack may screw us. Munge it so it does
3316 if (TREE_CODE (x) == TYPE_DECL)
3318 tree name = DECL_NAME (x);
3320 tree *ptr = (tree *)0;
3321 for (; b != global_binding_level; b = b->level_chain)
3323 tree shadowed = b->type_shadowed;
3324 for (; shadowed; shadowed = TREE_CHAIN (shadowed))
3325 if (TREE_PURPOSE (shadowed) == name)
3327 ptr = &TREE_VALUE (shadowed);
3328 /* Can't break out of the loop here because sometimes
3329 a binding level will have duplicate bindings for
3330 PT names. It's gross, but I haven't time to fix it. */
3333 newval = TREE_TYPE (x);
3334 if (ptr == (tree *)0)
3336 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3337 up here if this is changed to an assertion. --KR */
3338 SET_IDENTIFIER_TYPE_VALUE (name, newval);
3348 /* Like push_overloaded_decl, only it places X in GLOBAL_BINDING_LEVEL,
3352 push_overloaded_decl_top_level (x, forget)
3356 struct binding_level *b = current_binding_level;
3358 current_binding_level = global_binding_level;
3359 push_overloaded_decl (x, forget);
3360 current_binding_level = b;
3363 /* Make the declaration of X appear in CLASS scope. */
3366 pushdecl_class_level (x)
3369 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3370 scope looks for the pre-mangled name. */
3371 register tree name = DECL_NAME (x);
3375 if (TYPE_BEING_DEFINED (current_class_type))
3377 /* Check for inconsistent use of this name in the class body.
3378 Types, enums, and static vars are checked here; other
3379 members are checked in finish_struct. */
3380 tree icv = IDENTIFIER_CLASS_VALUE (name);
3383 /* Don't complain about inherited names. */
3384 && id_in_current_class (name)
3385 /* Or shadowed tags. */
3386 && !(TREE_CODE (icv) == TYPE_DECL
3387 && DECL_CONTEXT (icv) == current_class_type))
3389 cp_error ("declaration of identifier `%D' as `%#D'", name, x);
3390 cp_error_at ("conflicts with previous use in class as `%#D'",
3395 push_class_level_binding (name, x);
3396 if (TREE_CODE (x) == TYPE_DECL)
3398 set_identifier_type_value (name, TREE_TYPE (x));
3404 /* This function is used to push the mangled decls for nested types into
3405 the appropriate scope. Previously pushdecl_top_level was used, but that
3406 is incorrect for members of local classes. */
3409 pushdecl_nonclass_level (x)
3412 struct binding_level *b = current_binding_level;
3414 my_friendly_assert (b->parm_flag != 2, 180);
3417 /* Get out of template binding levels */
3418 while (b->pseudo_global)
3422 pushdecl_with_scope (x, b);
3425 /* Make the declaration(s) of X appear in CLASS scope
3426 under the name NAME. */
3429 push_class_level_binding (name, x)
3433 if (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3434 && purpose_member (name, class_binding_level->class_shadowed))
3437 maybe_push_cache_obstack ();
3438 class_binding_level->class_shadowed
3439 = tree_cons (name, IDENTIFIER_CLASS_VALUE (name),
3440 class_binding_level->class_shadowed);
3442 IDENTIFIER_CLASS_VALUE (name) = x;
3443 obstack_ptr_grow (&decl_obstack, x);
3446 /* Tell caller how to interpret a TREE_LIST which contains
3447 chains of FUNCTION_DECLS. */
3450 overloaded_globals_p (list)
3453 my_friendly_assert (TREE_CODE (list) == TREE_LIST, 142);
3455 /* Don't commit caller to seeing them as globals. */
3456 if (TREE_NONLOCAL_FLAG (list))
3458 /* Do commit caller to not seeing them as globals. */
3459 if (TREE_CODE (TREE_VALUE (list)) == TREE_LIST)
3461 /* Do commit caller to seeing them as globals. */
3465 /* DECL is a FUNCTION_DECL which may have other definitions already in
3466 place. We get around this by making the value of the identifier point
3467 to a list of all the things that want to be referenced by that name. It
3468 is then up to the users of that name to decide what to do with that
3471 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3472 slot. It is dealt with the same way.
3474 The value returned may be a previous declaration if we guessed wrong
3475 about what language DECL should belong to (C or C++). Otherwise,
3476 it's always DECL (and never something that's not a _DECL). */
3479 push_overloaded_decl (decl, forgettable)
3483 tree orig_name = DECL_NAME (decl);
3485 int doing_global = (global_bindings_p () || ! forgettable);
3489 old = IDENTIFIER_GLOBAL_VALUE (orig_name);
3490 if (old && TREE_CODE (old) == FUNCTION_DECL
3491 && DECL_ARTIFICIAL (old)
3492 && (DECL_BUILT_IN (old) || DECL_BUILT_IN_NONANSI (old)))
3494 if (duplicate_decls (decl, old))
3501 old = IDENTIFIER_LOCAL_VALUE (orig_name);
3503 if (! purpose_member (orig_name, current_binding_level->shadowed))
3505 current_binding_level->shadowed
3506 = tree_cons (orig_name, old, current_binding_level->shadowed);
3513 if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old))
3515 tree t = TREE_TYPE (old);
3516 if (IS_AGGR_TYPE (t) && warn_shadow
3517 && (! DECL_IN_SYSTEM_HEADER (decl)
3518 || ! DECL_IN_SYSTEM_HEADER (old)))
3519 cp_warning ("`%#D' hides constructor for `%#T'", decl, t);
3522 else if (is_overloaded_fn (old))
3526 for (tmp = get_first_fn (old); tmp; tmp = DECL_CHAIN (tmp))
3527 if (decl == tmp || duplicate_decls (decl, tmp))
3532 cp_error_at ("previous non-function declaration `%#D'", old);
3533 cp_error ("conflicts with function declaration `%#D'", decl);
3538 if (old || TREE_CODE (decl) == TEMPLATE_DECL)
3540 if (old && is_overloaded_fn (old))
3541 DECL_CHAIN (decl) = get_first_fn (old);
3543 DECL_CHAIN (decl) = NULL_TREE;
3544 old = tree_cons (orig_name, decl, NULL_TREE);
3545 TREE_TYPE (old) = unknown_type_node;
3548 /* orig_name is not ambiguous. */
3552 IDENTIFIER_GLOBAL_VALUE (orig_name) = old;
3554 IDENTIFIER_LOCAL_VALUE (orig_name) = old;
3559 /* Generate an implicit declaration for identifier FUNCTIONID
3560 as a function of type int (). Print a warning if appropriate. */
3563 implicitly_declare (functionid)
3567 int temp = allocation_temporary_p ();
3569 push_obstacks_nochange ();
3571 /* Save the decl permanently so we can warn if definition follows.
3572 In ANSI C, warn_implicit is usually false, so the saves little space.
3573 But in C++, it's usually true, hence the extra code. */
3574 if (temp && (! warn_implicit || toplevel_bindings_p ()))
3575 end_temporary_allocation ();
3577 /* We used to reuse an old implicit decl here,
3578 but this loses with inline functions because it can clobber
3579 the saved decl chains. */
3580 decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type);
3582 DECL_EXTERNAL (decl) = 1;
3583 TREE_PUBLIC (decl) = 1;
3584 DECL_ARTIFICIAL (decl) = 1;
3586 /* ANSI standard says implicit declarations are in the innermost block.
3587 So we record the decl in the standard fashion. */
3589 rest_of_decl_compilation (decl, NULL_PTR, 0, 0);
3592 /* Only one warning per identifier. */
3593 && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE)
3595 cp_pedwarn ("implicit declaration of function `%#D'", decl);
3598 SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl);
3605 /* Return zero if the declaration NEWDECL is valid
3606 when the declaration OLDDECL (assumed to be for the same name)
3607 has already been seen.
3608 Otherwise return an error message format string with a %s
3609 where the identifier should go. */
3612 redeclaration_error_message (newdecl, olddecl)
3613 tree newdecl, olddecl;
3615 if (TREE_CODE (newdecl) == TYPE_DECL)
3617 /* Because C++ can put things into name space for free,
3618 constructs like "typedef struct foo { ... } foo"
3619 would look like an erroneous redeclaration. */
3620 if (comptypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl), 0))
3623 return "redefinition of `%#D'";
3625 else if (TREE_CODE (newdecl) == FUNCTION_DECL)
3627 /* If this is a pure function, its olddecl will actually be
3628 the original initialization to `0' (which we force to call
3629 abort()). Don't complain about redefinition in this case. */
3630 if (DECL_LANG_SPECIFIC (olddecl) && DECL_ABSTRACT_VIRTUAL_P (olddecl))
3633 /* We'll complain about linkage mismatches in
3634 warn_extern_redeclared_static. */
3636 /* defining the same name twice is no good. */
3637 if (DECL_INITIAL (olddecl) != NULL_TREE
3638 && DECL_INITIAL (newdecl) != NULL_TREE)
3640 if (DECL_NAME (olddecl) == NULL_TREE)
3641 return "`%#D' not declared in class";
3643 return "redefinition of `%#D'";
3647 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
3649 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
3650 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl))
3651 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)))
3652 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL
3653 && TYPE_SIZE (TREE_TYPE (newdecl))
3654 && TYPE_SIZE (TREE_TYPE (olddecl))))
3655 return "redefinition of `%#D'";
3658 else if (toplevel_bindings_p ())
3660 /* Objects declared at top level: */
3661 /* If at least one is a reference, it's ok. */
3662 if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
3664 /* Reject two definitions. */
3665 return "redefinition of `%#D'";
3669 /* Objects declared with block scope: */
3670 /* Reject two definitions, and reject a definition
3671 together with an external reference. */
3672 if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
3673 return "redeclaration of `%#D'";
3678 /* Get the LABEL_DECL corresponding to identifier ID as a label.
3679 Create one if none exists so far for the current function.
3680 This function is called for both label definitions and label references. */
3686 register tree decl = IDENTIFIER_LABEL_VALUE (id);
3688 if (current_function_decl == NULL_TREE)
3690 error ("label `%s' referenced outside of any function",
3691 IDENTIFIER_POINTER (id));
3695 if ((decl == NULL_TREE
3696 || DECL_SOURCE_LINE (decl) == 0)
3697 && (named_label_uses == NULL
3698 || named_label_uses->names_in_scope != current_binding_level->names
3699 || named_label_uses->label_decl != decl))
3701 struct named_label_list *new_ent;
3703 = (struct named_label_list*)oballoc (sizeof (struct named_label_list));
3704 new_ent->label_decl = decl;
3705 new_ent->names_in_scope = current_binding_level->names;
3706 new_ent->binding_level = current_binding_level;
3707 new_ent->lineno_o_goto = lineno;
3708 new_ent->filename_o_goto = input_filename;
3709 new_ent->next = named_label_uses;
3710 named_label_uses = new_ent;
3713 /* Use a label already defined or ref'd with this name. */
3714 if (decl != NULL_TREE)
3716 /* But not if it is inherited and wasn't declared to be inheritable. */
3717 if (DECL_CONTEXT (decl) != current_function_decl
3718 && ! C_DECLARED_LABEL_FLAG (decl))
3719 return shadow_label (id);
3723 decl = build_decl (LABEL_DECL, id, void_type_node);
3725 /* Make sure every label has an rtx. */
3728 /* A label not explicitly declared must be local to where it's ref'd. */
3729 DECL_CONTEXT (decl) = current_function_decl;
3731 DECL_MODE (decl) = VOIDmode;
3733 /* Say where one reference is to the label,
3734 for the sake of the error if it is not defined. */
3735 DECL_SOURCE_LINE (decl) = lineno;
3736 DECL_SOURCE_FILE (decl) = input_filename;
3738 SET_IDENTIFIER_LABEL_VALUE (id, decl);
3740 named_labels = tree_cons (NULL_TREE, decl, named_labels);
3741 named_label_uses->label_decl = decl;
3746 /* Make a label named NAME in the current function,
3747 shadowing silently any that may be inherited from containing functions
3748 or containing scopes.
3750 Note that valid use, if the label being shadowed
3751 comes from another scope in the same function,
3752 requires calling declare_nonlocal_label right away. */
3758 register tree decl = IDENTIFIER_LABEL_VALUE (name);
3760 if (decl != NULL_TREE)
3762 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
3763 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
3764 SET_IDENTIFIER_LABEL_VALUE (decl, NULL_TREE);
3767 return lookup_label (name);
3770 /* Define a label, specifying the location in the source file.
3771 Return the LABEL_DECL node for the label, if the definition is valid.
3772 Otherwise return 0. */
3775 define_label (filename, line, name)
3782 if (minimal_parse_mode)
3784 push_obstacks (&permanent_obstack, &permanent_obstack);
3785 decl = build_decl (LABEL_DECL, name, void_type_node);
3787 DECL_SOURCE_LINE (decl) = line;
3788 DECL_SOURCE_FILE (decl) = filename;
3793 decl = lookup_label (name);
3795 /* After labels, make any new cleanups go into their
3796 own new (temporary) binding contour. */
3797 current_binding_level->more_cleanups_ok = 0;
3799 /* If label with this name is known from an outer context, shadow it. */
3800 if (decl != NULL_TREE && DECL_CONTEXT (decl) != current_function_decl)
3802 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
3803 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
3804 decl = lookup_label (name);
3807 if (name == get_identifier ("wchar_t"))
3808 cp_pedwarn ("label named wchar_t");
3810 if (DECL_INITIAL (decl) != NULL_TREE)
3812 cp_error ("duplicate label `%D'", decl);
3817 struct named_label_list *uses, *prev;
3820 /* Mark label as having been defined. */
3821 DECL_INITIAL (decl) = error_mark_node;
3822 /* Say where in the source. */
3823 DECL_SOURCE_FILE (decl) = filename;
3824 DECL_SOURCE_LINE (decl) = line;
3827 uses = named_label_uses;
3828 while (uses != NULL)
3829 if (uses->label_decl == decl)
3831 struct binding_level *b = current_binding_level;
3834 tree new_decls = b->names;
3835 tree old_decls = (b == uses->binding_level)
3836 ? uses->names_in_scope : NULL_TREE;
3837 while (new_decls != old_decls)
3839 if (TREE_CODE (new_decls) == VAR_DECL
3840 /* Don't complain about crossing initialization
3841 of internal entities. They can't be accessed,
3842 and they should be cleaned up
3843 by the time we get to the label. */
3844 && ! DECL_ARTIFICIAL (new_decls)
3845 && ((DECL_INITIAL (new_decls) != NULL_TREE
3846 && DECL_INITIAL (new_decls) != error_mark_node)
3847 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
3851 cp_error ("jump to label `%D'", decl);
3852 error_with_file_and_line (uses->filename_o_goto,
3853 uses->lineno_o_goto,
3857 cp_error_at (" crosses initialization of `%#D'",
3860 new_decls = TREE_CHAIN (new_decls);
3862 if (b == uses->binding_level)
3868 prev->next = uses->next;
3870 named_label_uses = uses->next;
3879 current_function_return_value = NULL_TREE;
3886 struct binding_level *level;
3887 struct cp_switch *next;
3890 static struct cp_switch *switch_stack;
3896 = (struct cp_switch *) oballoc (sizeof (struct cp_switch));
3897 p->level = current_binding_level;
3898 p->next = switch_stack;
3905 switch_stack = switch_stack->next;
3908 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
3909 /* XXX Note decl is never actually used. (bpk) */
3912 define_case_label (decl)
3915 tree cleanup = last_cleanup_this_contour ();
3916 struct binding_level *b = current_binding_level;
3921 static int explained = 0;
3922 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup));
3923 warning ("where case label appears here");
3926 warning ("(enclose actions of previous case statements requiring");
3927 warning ("destructors in their own binding contours.)");
3932 for (; b && b != switch_stack->level; b = b->level_chain)
3934 tree new_decls = b->names;
3935 for (; new_decls; new_decls = TREE_CHAIN (new_decls))
3937 if (TREE_CODE (new_decls) == VAR_DECL
3938 /* Don't complain about crossing initialization
3939 of internal entities. They can't be accessed,
3940 and they should be cleaned up
3941 by the time we get to the label. */
3942 && ! DECL_ARTIFICIAL (new_decls)
3943 && ((DECL_INITIAL (new_decls) != NULL_TREE
3944 && DECL_INITIAL (new_decls) != error_mark_node)
3945 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
3948 error ("jump to case label");
3950 cp_error_at (" crosses initialization of `%#D'",
3956 /* After labels, make any new cleanups go into their
3957 own new (temporary) binding contour. */
3959 current_binding_level->more_cleanups_ok = 0;
3960 current_function_return_value = NULL_TREE;
3963 /* Return the list of declarations of the current level.
3964 Note that this list is in reverse order unless/until
3965 you nreverse it; and when you do nreverse it, you must
3966 store the result back using `storedecls' or you will lose. */
3971 return current_binding_level->names;
3974 /* Return the list of type-tags (for structs, etc) of the current level. */
3979 return current_binding_level->tags;
3982 /* Store the list of declarations of the current level.
3983 This is done for the parameter declarations of a function being defined,
3984 after they are modified in the light of any missing parameters. */
3990 current_binding_level->names = decls;
3993 /* Similarly, store the list of tags of the current level. */
3999 current_binding_level->tags = tags;
4002 /* Given NAME, an IDENTIFIER_NODE,
4003 return the structure (or union or enum) definition for that name.
4004 Searches binding levels from BINDING_LEVEL up to the global level.
4005 If THISLEVEL_ONLY is nonzero, searches only the specified context
4006 (but skips any tag-transparent contexts to find one that is
4007 meaningful for tags).
4008 FORM says which kind of type the caller wants;
4009 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4010 If the wrong kind of type is found, and it's not a template, an error is
4014 lookup_tag (form, name, binding_level, thislevel_only)
4015 enum tree_code form;
4017 struct binding_level *binding_level;
4020 register struct binding_level *level;
4022 for (level = binding_level; level; level = level->level_chain)
4025 if (ANON_AGGRNAME_P (name))
4026 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4028 /* There's no need for error checking here, because
4029 anon names are unique throughout the compilation. */
4030 if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name)
4031 return TREE_VALUE (tail);
4034 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4036 if (TREE_PURPOSE (tail) == name)
4038 enum tree_code code = TREE_CODE (TREE_VALUE (tail));
4039 /* Should tighten this up; it'll probably permit
4040 UNION_TYPE and a struct template, for example. */
4042 && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL))
4044 /* Definition isn't the kind we were looking for. */
4045 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail),
4049 return TREE_VALUE (tail);
4052 if (thislevel_only && ! level->tag_transparent)
4054 if (level->pseudo_global)
4056 tree t = IDENTIFIER_GLOBAL_VALUE (name);
4057 if (t && TREE_CODE (t) == TEMPLATE_DECL
4058 && TREE_CODE (DECL_TEMPLATE_RESULT (t)) == TYPE_DECL)
4059 return TREE_TYPE (t);
4063 if (current_class_type && level->level_chain == global_binding_level)
4065 /* Try looking in this class's tags before heading into
4066 global binding level. */
4067 tree context = current_class_type;
4070 switch (TREE_CODE_CLASS (TREE_CODE (context)))
4074 these_tags = CLASSTYPE_TAGS (context);
4075 if (ANON_AGGRNAME_P (name))
4078 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags))
4080 return TREE_VALUE (tail);
4081 these_tags = TREE_CHAIN (these_tags);
4086 if (TREE_PURPOSE (these_tags) == name)
4088 if (TREE_CODE (TREE_VALUE (these_tags)) != form)
4090 cp_error ("`%#D' redeclared as %C in class scope",
4091 TREE_VALUE (tail), form);
4094 return TREE_VALUE (tail);
4096 these_tags = TREE_CHAIN (these_tags);
4098 /* If this type is not yet complete, then don't
4099 look at its context. */
4100 if (TYPE_SIZE (context) == NULL_TREE)
4102 /* Go to next enclosing type, if any. */
4103 context = DECL_CONTEXT (TYPE_MAIN_DECL (context));
4106 context = DECL_CONTEXT (context);
4109 my_friendly_abort (10);
4121 set_current_level_tags_transparency (tags_transparent)
4122 int tags_transparent;
4124 current_binding_level->tag_transparent = tags_transparent;
4127 /* Given a type, find the tag that was defined for it and return the tag name.
4128 Otherwise return 0. However, the value can never be 0
4129 in the cases in which this is used.
4131 C++: If NAME is non-zero, this is the new name to install. This is
4132 done when replacing anonymous tags with real tag names. */
4135 lookup_tag_reverse (type, name)
4139 register struct binding_level *level;
4141 for (level = current_binding_level; level; level = level->level_chain)
4144 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4146 if (TREE_VALUE (tail) == type)
4149 TREE_PURPOSE (tail) = name;
4150 return TREE_PURPOSE (tail);
4157 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4158 Return the type value, or NULL_TREE if not found. */
4161 lookup_nested_type (type, context)
4165 if (context == NULL_TREE)
4169 switch (TREE_CODE (context))
4173 tree ctype = TREE_TYPE (context);
4174 tree match = value_member (type, CLASSTYPE_TAGS (ctype));
4176 return TREE_VALUE (match);
4177 context = DECL_CONTEXT (context);
4179 /* When we have a nested class whose member functions have
4180 local types (e.g., a set of enums), we'll arrive here
4181 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4182 the enclosing class. Instead, we want to make sure we
4183 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4184 if (context && TREE_CODE (context) == RECORD_TYPE)
4185 context = TREE_CHAIN (context);
4189 if (TYPE_NAME (type) && TYPE_IDENTIFIER (type))
4190 return lookup_name (TYPE_IDENTIFIER (type), 1);
4193 my_friendly_abort (12);
4199 /* Look up NAME in the NAMESPACE. */
4202 lookup_namespace_name (namespace, name)
4203 tree namespace, name;
4205 struct binding_level *b = (struct binding_level *)NAMESPACE_LEVEL (namespace);
4209 /* This searches just one level. */
4212 for (x = b->names; x; x = TREE_CHAIN (x))
4213 if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name)
4217 /* This searches all levels. */
4218 for (; b && !x; b = b->level_chain)
4220 for (x = b->names; x; x = TREE_CHAIN (x))
4221 if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name)
4229 make_typename_type (context, name)
4234 if (TREE_CODE (name) == TYPE_DECL)
4235 name = DECL_NAME (name);
4236 else if (TREE_CODE (name) != IDENTIFIER_NODE)
4237 my_friendly_abort (2000);
4239 if (! processing_template_decl
4240 || ! uses_template_parms (context)
4241 || context == current_class_type)
4243 t = lookup_field (context, name, 0, 1);
4246 cp_error ("no type named `%#T' in `%#T'", name, context);
4247 return error_mark_node;
4249 return TREE_TYPE (t);
4252 if (processing_template_decl)
4253 push_obstacks (&permanent_obstack, &permanent_obstack);
4254 t = make_lang_type (TYPENAME_TYPE);
4255 d = build_decl (TYPE_DECL, name, t);
4256 if (processing_template_decl)
4259 TYPE_CONTEXT (t) = context;
4260 TYPE_NAME (TREE_TYPE (d)) = d;
4261 TYPE_STUB_DECL (TREE_TYPE (d)) = d;
4262 DECL_CONTEXT (d) = context;
4263 CLASSTYPE_GOT_SEMICOLON (t) = 1;
4268 /* Look up NAME in the current binding level and its superiors in the
4269 namespace of variables, functions and typedefs. Return a ..._DECL
4270 node of some kind representing its definition if there is only one
4271 such declaration, or return a TREE_LIST with all the overloaded
4272 definitions if there are many, or return 0 if it is undefined.
4274 If PREFER_TYPE is > 0, we prefer TYPE_DECLs.
4275 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4276 Otherwise we prefer non-TYPE_DECLs. */
4279 lookup_name_real (name, prefer_type, nonclass)
4281 int prefer_type, nonclass;
4285 tree from_obj = NULL_TREE;
4286 tree locval, classval;
4288 if (prefer_type == -2)
4290 extern int looking_for_typename;
4291 tree type = NULL_TREE;
4294 prefer_type = looking_for_typename;
4298 else if (got_object != error_mark_node)
4303 if (type == error_mark_node)
4304 return error_mark_node;
4305 if (TREE_CODE (type) == TYPENAME_TYPE && TREE_TYPE (type))
4306 type = TREE_TYPE (type);
4308 type = complete_type (type);
4310 if (type == void_type_node)
4311 val = IDENTIFIER_GLOBAL_VALUE (name);
4312 else if (TREE_CODE (type) == NAMESPACE_DECL)
4314 val = lookup_namespace_name (type, name);
4316 else if (! IS_AGGR_TYPE (type)
4317 || TREE_CODE (type) == TEMPLATE_TYPE_PARM
4318 || TREE_CODE (type) == TYPENAME_TYPE)
4319 /* Someone else will give an error about this if needed. */
4321 else if (TYPE_BEING_DEFINED (type))
4323 val = IDENTIFIER_CLASS_VALUE (name);
4324 if (val && DECL_CONTEXT (val) != type)
4326 struct binding_level *b = class_binding_level;
4327 for (val = NULL_TREE; b; b = b->level_chain)
4329 tree t = purpose_member (name, b->class_shadowed);
4330 if (t && TREE_VALUE (t)
4331 && DECL_CONTEXT (TREE_VALUE (t)) == type)
4333 val = TREE_VALUE (t);
4338 if (val == NULL_TREE)
4339 val = lookup_field (type, name, 0, 1);
4341 else if (type == current_class_type)
4342 val = IDENTIFIER_CLASS_VALUE (name);
4344 val = lookup_field (type, name, 0, prefer_type);
4350 if (got_scope && processing_template_decl
4351 && got_scope != current_class_type
4352 && uses_template_parms (got_scope)
4353 && val && TREE_CODE (val) == TYPE_DECL
4354 && ! DECL_ARTIFICIAL (val))
4356 tree t = make_typename_type (got_scope, DECL_NAME (val));
4357 TREE_TYPE (t) = TREE_TYPE (val);
4358 val = TYPE_MAIN_DECL (t);
4364 else if (got_object && val)
4368 locval = classval = NULL_TREE;
4370 if (current_binding_level != global_binding_level
4371 && IDENTIFIER_LOCAL_VALUE (name))
4372 locval = IDENTIFIER_LOCAL_VALUE (name);
4374 /* In C++ class fields are between local and global scope,
4375 just before the global scope. */
4376 if (current_class_type && ! nonclass)
4378 classval = IDENTIFIER_CLASS_VALUE (name);
4379 if (classval == NULL_TREE && TYPE_BEING_DEFINED (current_class_type))
4380 /* Try to find values from base classes if we are presently
4381 defining a type. We are presently only interested in
4383 classval = lookup_field (current_class_type, name, 0, 1);
4385 /* yylex() calls this with -2, since we should never start digging for
4386 the nested name at the point where we haven't even, for example,
4387 created the COMPONENT_REF or anything like that. */
4388 if (classval == NULL_TREE)
4389 classval = lookup_nested_field (name, ! yylex);
4392 if (locval && classval)
4394 if (current_scope () == current_function_decl
4395 && ! hack_decl_function_context (current_function_decl))
4396 /* Not in a nested function. */
4400 /* This is incredibly horrible. The whole concept of
4401 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
4402 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
4404 tree lctx = hack_decl_function_context (locval);
4405 tree cctx = hack_decl_function_context (classval);
4407 if (lctx == current_scope ())
4409 else if (lctx == cctx)
4412 /* I don't know which is right; let's just guess for now. */
4421 val = IDENTIFIER_GLOBAL_VALUE (name);
4426 /* This should only warn about types used in qualified-ids. */
4427 if (from_obj && from_obj != val)
4429 if (looking_for_typename && TREE_CODE (from_obj) == TYPE_DECL
4430 && TREE_CODE (val) == TYPE_DECL
4431 && TREE_TYPE (from_obj) != TREE_TYPE (val))
4433 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
4434 name, got_object, TREE_TYPE (from_obj));
4435 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
4442 if ((TREE_CODE (val) == TEMPLATE_DECL && looking_for_template)
4443 || TREE_CODE (val) == TYPE_DECL || prefer_type <= 0)
4445 else if (IDENTIFIER_HAS_TYPE_VALUE (name))
4446 val = TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name));
4447 else if (TREE_TYPE (val) == error_mark_node)
4448 val = error_mark_node;
4457 lookup_name_nonclass (name)
4460 return lookup_name_real (name, 0, 1);
4464 lookup_name (name, prefer_type)
4468 return lookup_name_real (name, prefer_type, 0);
4471 /* Similar to `lookup_name' but look only at current binding level. */
4474 lookup_name_current_level (name)
4477 register tree t = NULL_TREE;
4479 if (current_binding_level == global_binding_level)
4481 t = IDENTIFIER_GLOBAL_VALUE (name);
4483 /* extern "C" function() */
4484 if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST)
4487 else if (IDENTIFIER_LOCAL_VALUE (name) != NULL_TREE)
4489 struct binding_level *b = current_binding_level;
4492 for (t = b->names; t; t = TREE_CHAIN (t))
4493 if (DECL_NAME (t) == name || DECL_ASSEMBLER_NAME (t) == name)
4507 /* Arrange for the user to get a source line number, even when the
4508 compiler is going down in flames, so that she at least has a
4509 chance of working around problems in the compiler. We used to
4510 call error(), but that let the segmentation fault continue
4511 through; now, it's much more passive by asking them to send the
4512 maintainers mail about the problem. */
4518 signal (SIGSEGV, SIG_DFL);
4520 signal (SIGIOT, SIG_DFL);
4523 signal (SIGILL, SIG_DFL);
4526 signal (SIGABRT, SIG_DFL);
4529 signal (SIGBUS, SIG_DFL);
4531 my_friendly_abort (0);
4535 /* Unused -- brendan 970107 */
4536 /* Array for holding types considered "built-in". These types
4537 are output in the module in which `main' is defined. */
4538 static tree *builtin_type_tdescs_arr;
4539 static int builtin_type_tdescs_len, builtin_type_tdescs_max;
4542 /* Push the declarations of builtin types into the namespace.
4543 RID_INDEX, if < RID_MAX is the index of the builtin type
4544 in the array RID_POINTERS. NAME is the name used when looking
4545 up the builtin type. TYPE is the _TYPE node for the builtin type. */
4548 record_builtin_type (rid_index, name, type)
4553 tree rname = NULL_TREE, tname = NULL_TREE;
4556 if ((int) rid_index < (int) RID_MAX)
4557 rname = ridpointers[(int) rid_index];
4559 tname = get_identifier (name);
4561 TYPE_BUILT_IN (type) = 1;
4565 tdecl = pushdecl (build_decl (TYPE_DECL, tname, type));
4566 set_identifier_type_value (tname, NULL_TREE);
4567 if ((int) rid_index < (int) RID_MAX)
4568 IDENTIFIER_GLOBAL_VALUE (tname) = tdecl;
4570 if (rname != NULL_TREE)
4572 if (tname != NULL_TREE)
4574 set_identifier_type_value (rname, NULL_TREE);
4575 IDENTIFIER_GLOBAL_VALUE (rname) = tdecl;
4579 tdecl = pushdecl (build_decl (TYPE_DECL, rname, type));
4580 set_identifier_type_value (rname, NULL_TREE);
4585 /* Push overloaded decl, in global scope, with one argument so it
4586 can be used as a callback from define_function. */
4589 push_overloaded_decl_1 (x)
4592 push_overloaded_decl (x, 0);
4599 auto_function (name, type, code)
4601 enum built_in_function code;
4603 return define_function
4604 (IDENTIFIER_POINTER (name), type, code, (void (*)())push_overloaded_decl_1,
4605 IDENTIFIER_POINTER (build_decl_overload (name, TYPE_ARG_TYPES (type),
4609 /* Create the predefined scalar types of C,
4610 and some nodes representing standard constants (0, 1, (void *)0).
4611 Initialize the global binding level.
4612 Make definitions for built-in primitive functions. */
4615 init_decl_processing ()
4618 register tree endlink, int_endlink, double_endlink, unsigned_endlink;
4620 /* Data type of memcpy. */
4621 tree memcpy_ftype, strlen_ftype;
4622 int wchar_type_size;
4624 tree array_domain_type;
4625 extern int flag_strict_prototype;
4626 tree vb_off_identifier;
4627 /* Function type `char *(char *, char *)' and similar ones */
4628 tree string_ftype_ptr_ptr, int_ftype_string_string;
4629 tree sizetype_endlink;
4630 tree ptr_ftype, ptr_ftype_unsigned, ptr_ftype_sizetype;
4631 tree void_ftype, void_ftype_int, void_ftype_ptr;
4633 /* Have to make these distinct before we try using them. */
4634 lang_name_cplusplus = get_identifier ("C++");
4635 lang_name_c = get_identifier ("C");
4637 if (flag_strict_prototype == 2)
4640 strict_prototypes_lang_c = strict_prototypes_lang_cplusplus;
4643 strict_prototypes_lang_c = flag_strict_prototype;
4646 current_lang_name = lang_name_c;
4648 current_function_decl = NULL_TREE;
4649 named_labels = NULL_TREE;
4650 named_label_uses = NULL;
4651 current_binding_level = NULL_BINDING_LEVEL;
4652 free_binding_level = NULL_BINDING_LEVEL;
4654 /* Because most segmentation signals can be traced back into user
4655 code, catch them and at least give the user a chance of working
4656 around compiler bugs. */
4657 signal (SIGSEGV, signal_catch);
4659 /* We will also catch aborts in the back-end through signal_catch and
4660 give the user a chance to see where the error might be, and to defeat
4661 aborts in the back-end when there have been errors previously in their
4664 signal (SIGIOT, signal_catch);
4667 signal (SIGILL, signal_catch);
4670 signal (SIGABRT, signal_catch);
4673 signal (SIGBUS, signal_catch);
4676 gcc_obstack_init (&decl_obstack);
4678 /* Must lay these out before anything else gets laid out. */
4679 error_mark_node = make_node (ERROR_MARK);
4680 TREE_PERMANENT (error_mark_node) = 1;
4681 TREE_TYPE (error_mark_node) = error_mark_node;
4682 error_mark_list = build_tree_list (error_mark_node, error_mark_node);
4683 TREE_TYPE (error_mark_list) = error_mark_node;
4685 /* Make the binding_level structure for global names. */
4687 global_binding_level = current_binding_level;
4689 this_identifier = get_identifier (THIS_NAME);
4690 in_charge_identifier = get_identifier (IN_CHARGE_NAME);
4691 ctor_identifier = get_identifier (CTOR_NAME);
4692 dtor_identifier = get_identifier (DTOR_NAME);
4693 pfn_identifier = get_identifier (VTABLE_PFN_NAME);
4694 index_identifier = get_identifier (VTABLE_INDEX_NAME);
4695 delta_identifier = get_identifier (VTABLE_DELTA_NAME);
4696 delta2_identifier = get_identifier (VTABLE_DELTA2_NAME);
4697 pfn_or_delta2_identifier = get_identifier ("__pfn_or_delta2");
4698 if (flag_handle_signatures)
4700 tag_identifier = get_identifier (SIGTABLE_TAG_NAME);
4701 vb_off_identifier = get_identifier (SIGTABLE_VB_OFF_NAME);
4702 vt_off_identifier = get_identifier (SIGTABLE_VT_OFF_NAME);
4705 /* Define `int' and `char' first so that dbx will output them first. */
4707 integer_type_node = make_signed_type (INT_TYPE_SIZE);
4708 record_builtin_type (RID_INT, NULL_PTR, integer_type_node);
4710 /* Define `char', which is like either `signed char' or `unsigned char'
4711 but not the same as either. */
4715 ? make_signed_type (CHAR_TYPE_SIZE)
4716 : make_unsigned_type (CHAR_TYPE_SIZE));
4717 record_builtin_type (RID_CHAR, "char", char_type_node);
4719 long_integer_type_node = make_signed_type (LONG_TYPE_SIZE);
4720 record_builtin_type (RID_LONG, "long int", long_integer_type_node);
4722 unsigned_type_node = make_unsigned_type (INT_TYPE_SIZE);
4723 record_builtin_type (RID_UNSIGNED, "unsigned int", unsigned_type_node);
4725 long_unsigned_type_node = make_unsigned_type (LONG_TYPE_SIZE);
4726 record_builtin_type (RID_MAX, "long unsigned int", long_unsigned_type_node);
4727 record_builtin_type (RID_MAX, "unsigned long", long_unsigned_type_node);
4729 long_long_integer_type_node = make_signed_type (LONG_LONG_TYPE_SIZE);
4730 record_builtin_type (RID_MAX, "long long int", long_long_integer_type_node);
4732 long_long_unsigned_type_node = make_unsigned_type (LONG_LONG_TYPE_SIZE);
4733 record_builtin_type (RID_MAX, "long long unsigned int",
4734 long_long_unsigned_type_node);
4735 record_builtin_type (RID_MAX, "long long unsigned",
4736 long_long_unsigned_type_node);
4738 short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE);
4739 record_builtin_type (RID_SHORT, "short int", short_integer_type_node);
4740 short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE);
4741 record_builtin_type (RID_MAX, "short unsigned int", short_unsigned_type_node);
4742 record_builtin_type (RID_MAX, "unsigned short", short_unsigned_type_node);
4744 /* `unsigned long' is the standard type for sizeof.
4745 Note that stddef.h uses `unsigned long',
4746 and this must agree, even of long and int are the same size. */
4748 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE)));
4751 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE)));
4753 TREE_TYPE (TYPE_SIZE (integer_type_node)) = sizetype;
4754 TREE_TYPE (TYPE_SIZE (char_type_node)) = sizetype;
4755 TREE_TYPE (TYPE_SIZE (unsigned_type_node)) = sizetype;
4756 TREE_TYPE (TYPE_SIZE (long_unsigned_type_node)) = sizetype;
4757 TREE_TYPE (TYPE_SIZE (long_integer_type_node)) = sizetype;
4758 TREE_TYPE (TYPE_SIZE (long_long_integer_type_node)) = sizetype;
4759 TREE_TYPE (TYPE_SIZE (long_long_unsigned_type_node)) = sizetype;
4760 TREE_TYPE (TYPE_SIZE (short_integer_type_node)) = sizetype;
4761 TREE_TYPE (TYPE_SIZE (short_unsigned_type_node)) = sizetype;
4763 /* Define both `signed char' and `unsigned char'. */
4764 signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE);
4765 record_builtin_type (RID_MAX, "signed char", signed_char_type_node);
4766 unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE);
4767 record_builtin_type (RID_MAX, "unsigned char", unsigned_char_type_node);
4769 /* These are types that type_for_size and type_for_mode use. */
4770 intQI_type_node = make_signed_type (GET_MODE_BITSIZE (QImode));
4771 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node));
4772 intHI_type_node = make_signed_type (GET_MODE_BITSIZE (HImode));
4773 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node));
4774 intSI_type_node = make_signed_type (GET_MODE_BITSIZE (SImode));
4775 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node));
4776 intDI_type_node = make_signed_type (GET_MODE_BITSIZE (DImode));
4777 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node));
4778 unsigned_intQI_type_node = make_unsigned_type (GET_MODE_BITSIZE (QImode));
4779 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node));
4780 unsigned_intHI_type_node = make_unsigned_type (GET_MODE_BITSIZE (HImode));
4781 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node));
4782 unsigned_intSI_type_node = make_unsigned_type (GET_MODE_BITSIZE (SImode));
4783 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node));
4784 unsigned_intDI_type_node = make_unsigned_type (GET_MODE_BITSIZE (DImode));
4785 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node));
4787 float_type_node = make_node (REAL_TYPE);
4788 TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE;
4789 record_builtin_type (RID_FLOAT, NULL_PTR, float_type_node);
4790 layout_type (float_type_node);
4792 double_type_node = make_node (REAL_TYPE);
4793 if (flag_short_double)
4794 TYPE_PRECISION (double_type_node) = FLOAT_TYPE_SIZE;
4796 TYPE_PRECISION (double_type_node) = DOUBLE_TYPE_SIZE;
4797 record_builtin_type (RID_DOUBLE, NULL_PTR, double_type_node);
4798 layout_type (double_type_node);
4800 long_double_type_node = make_node (REAL_TYPE);
4801 TYPE_PRECISION (long_double_type_node) = LONG_DOUBLE_TYPE_SIZE;
4802 record_builtin_type (RID_MAX, "long double", long_double_type_node);
4803 layout_type (long_double_type_node);
4805 integer_zero_node = build_int_2 (0, 0);
4806 TREE_TYPE (integer_zero_node) = integer_type_node;
4807 integer_one_node = build_int_2 (1, 0);
4808 TREE_TYPE (integer_one_node) = integer_type_node;
4809 integer_two_node = build_int_2 (2, 0);
4810 TREE_TYPE (integer_two_node) = integer_type_node;
4811 integer_three_node = build_int_2 (3, 0);
4812 TREE_TYPE (integer_three_node) = integer_type_node;
4814 boolean_type_node = make_unsigned_type (BOOL_TYPE_SIZE);
4815 TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE);
4816 record_builtin_type (RID_BOOL, "bool", boolean_type_node);
4817 boolean_false_node = build_int_2 (0, 0);
4818 TREE_TYPE (boolean_false_node) = boolean_type_node;
4819 boolean_true_node = build_int_2 (1, 0);
4820 TREE_TYPE (boolean_true_node) = boolean_type_node;
4822 /* These are needed by stor-layout.c. */
4823 size_zero_node = size_int (0);
4824 size_one_node = size_int (1);
4826 signed_size_zero_node = build_int_2 (0, 0);
4827 TREE_TYPE (signed_size_zero_node) = make_signed_type (TYPE_PRECISION (sizetype));
4829 void_type_node = make_node (VOID_TYPE);
4830 record_builtin_type (RID_VOID, NULL_PTR, void_type_node);
4831 layout_type (void_type_node); /* Uses integer_zero_node. */
4832 void_list_node = build_tree_list (NULL_TREE, void_type_node);
4833 TREE_PARMLIST (void_list_node) = 1;
4835 null_pointer_node = build_int_2 (0, 0);
4836 TREE_TYPE (null_pointer_node) = build_pointer_type (void_type_node);
4837 layout_type (TREE_TYPE (null_pointer_node));
4840 TREE_TYPE (null_node) = type_for_size (POINTER_SIZE, 0);
4842 TREE_TYPE (null_node) = build_pointer_type (void_type_node);
4844 /* Used for expressions that do nothing, but are not errors. */
4845 void_zero_node = build_int_2 (0, 0);
4846 TREE_TYPE (void_zero_node) = void_type_node;
4848 string_type_node = build_pointer_type (char_type_node);
4849 const_string_type_node =
4850 build_pointer_type (build_type_variant (char_type_node, 1, 0));
4852 record_builtin_type (RID_MAX, NULL_PTR, string_type_node);
4855 /* Make a type to be the domain of a few array types
4856 whose domains don't really matter.
4857 200 is small enough that it always fits in size_t
4858 and large enough that it can hold most function names for the
4859 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
4860 array_domain_type = build_index_type (build_int_2 (200, 0));
4862 /* make a type for arrays of characters.
4863 With luck nothing will ever really depend on the length of this
4865 char_array_type_node
4866 = build_array_type (char_type_node, array_domain_type);
4867 /* Likewise for arrays of ints. */
4869 = build_array_type (integer_type_node, array_domain_type);
4871 /* This is just some anonymous class type. Nobody should ever
4872 need to look inside this envelope. */
4873 class_star_type_node = build_pointer_type (make_lang_type (RECORD_TYPE));
4875 default_function_type
4876 = build_function_type (integer_type_node, NULL_TREE);
4878 ptr_type_node = build_pointer_type (void_type_node);
4879 const_ptr_type_node =
4880 build_pointer_type (build_type_variant (void_type_node, 1, 0));
4882 record_builtin_type (RID_MAX, NULL_PTR, ptr_type_node);
4884 endlink = void_list_node;
4885 int_endlink = tree_cons (NULL_TREE, integer_type_node, endlink);
4886 double_endlink = tree_cons (NULL_TREE, double_type_node, endlink);
4887 unsigned_endlink = tree_cons (NULL_TREE, unsigned_type_node, endlink);
4889 ptr_ftype = build_function_type (ptr_type_node, NULL_TREE);
4890 ptr_ftype_unsigned = build_function_type (ptr_type_node, unsigned_endlink);
4891 sizetype_endlink = tree_cons (NULL_TREE, sizetype, endlink);
4892 /* We realloc here because sizetype could be int or unsigned. S'ok. */
4893 ptr_ftype_sizetype = build_function_type (ptr_type_node, sizetype_endlink);
4895 void_ftype = build_function_type (void_type_node, endlink);
4896 void_ftype_int = build_function_type (void_type_node, int_endlink);
4898 = build_function_type (void_type_node,
4899 tree_cons (NULL_TREE, ptr_type_node, endlink));
4902 = build_function_type (float_type_node,
4903 tree_cons (NULL_TREE, float_type_node, endlink));
4906 = build_function_type (double_type_node, double_endlink);
4908 ldouble_ftype_ldouble
4909 = build_function_type (long_double_type_node,
4910 tree_cons (NULL_TREE, long_double_type_node,
4913 double_ftype_double_double
4914 = build_function_type (double_type_node,
4915 tree_cons (NULL_TREE, double_type_node,
4919 = build_function_type (integer_type_node, int_endlink);
4922 = build_function_type (long_integer_type_node,
4923 tree_cons (NULL_TREE, long_integer_type_node,
4926 int_ftype_cptr_cptr_sizet
4927 = build_function_type (integer_type_node,
4928 tree_cons (NULL_TREE, const_ptr_type_node,
4929 tree_cons (NULL_TREE, const_ptr_type_node,
4930 tree_cons (NULL_TREE,
4934 string_ftype_ptr_ptr /* strcpy prototype */
4935 = build_function_type (string_type_node,
4936 tree_cons (NULL_TREE, string_type_node,
4937 tree_cons (NULL_TREE,
4938 const_string_type_node,
4941 int_ftype_string_string /* strcmp prototype */
4942 = build_function_type (integer_type_node,
4943 tree_cons (NULL_TREE, const_string_type_node,
4944 tree_cons (NULL_TREE,
4945 const_string_type_node,
4948 strlen_ftype /* strlen prototype */
4949 = build_function_type (sizetype,
4950 tree_cons (NULL_TREE, const_string_type_node,
4953 memcpy_ftype /* memcpy prototype */
4954 = build_function_type (ptr_type_node,
4955 tree_cons (NULL_TREE, ptr_type_node,
4956 tree_cons (NULL_TREE, const_ptr_type_node,
4957 sizetype_endlink)));
4959 if (flag_huge_objects)
4960 delta_type_node = long_integer_type_node;
4962 delta_type_node = short_integer_type_node;
4964 builtin_function ("__builtin_constant_p", int_ftype_int,
4965 BUILT_IN_CONSTANT_P, NULL_PTR);
4967 builtin_return_address_fndecl =
4968 builtin_function ("__builtin_return_address", ptr_ftype_unsigned,
4969 BUILT_IN_RETURN_ADDRESS, NULL_PTR);
4971 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned,
4972 BUILT_IN_FRAME_ADDRESS, NULL_PTR);
4974 builtin_function ("__builtin_alloca", ptr_ftype_sizetype,
4975 BUILT_IN_ALLOCA, "alloca");
4976 builtin_function ("__builtin_ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
4977 /* Define alloca, ffs as builtins.
4978 Declare _exit just to mark it as volatile. */
4979 if (! flag_no_builtin && !flag_no_nonansi_builtin)
4981 temp = builtin_function ("alloca", ptr_ftype_sizetype,
4982 BUILT_IN_ALLOCA, NULL_PTR);
4983 /* Suppress error if redefined as a non-function. */
4984 DECL_BUILT_IN_NONANSI (temp) = 1;
4985 temp = builtin_function ("ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
4986 /* Suppress error if redefined as a non-function. */
4987 DECL_BUILT_IN_NONANSI (temp) = 1;
4988 temp = builtin_function ("_exit", void_ftype_int,
4989 NOT_BUILT_IN, NULL_PTR);
4990 TREE_THIS_VOLATILE (temp) = 1;
4991 TREE_SIDE_EFFECTS (temp) = 1;
4992 /* Suppress error if redefined as a non-function. */
4993 DECL_BUILT_IN_NONANSI (temp) = 1;
4996 builtin_function ("__builtin_abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
4997 builtin_function ("__builtin_fabsf", float_ftype_float, BUILT_IN_FABS,
4999 builtin_function ("__builtin_fabs", double_ftype_double, BUILT_IN_FABS,
5001 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
5003 builtin_function ("__builtin_labs", long_ftype_long,
5004 BUILT_IN_LABS, NULL_PTR);
5005 builtin_function ("__builtin_saveregs", ptr_ftype,
5006 BUILT_IN_SAVEREGS, NULL_PTR);
5007 builtin_function ("__builtin_classify_type", default_function_type,
5008 BUILT_IN_CLASSIFY_TYPE, NULL_PTR);
5009 builtin_function ("__builtin_next_arg", ptr_ftype,
5010 BUILT_IN_NEXT_ARG, NULL_PTR);
5011 builtin_function ("__builtin_args_info", int_ftype_int,
5012 BUILT_IN_ARGS_INFO, NULL_PTR);
5014 /* Untyped call and return. */
5015 builtin_function ("__builtin_apply_args", ptr_ftype,
5016 BUILT_IN_APPLY_ARGS, NULL_PTR);
5018 temp = tree_cons (NULL_TREE,
5019 build_pointer_type (build_function_type (void_type_node,
5021 ptr_ftype_sizetype);
5022 builtin_function ("__builtin_apply",
5023 build_function_type (ptr_type_node, temp),
5024 BUILT_IN_APPLY, NULL_PTR);
5025 builtin_function ("__builtin_return", void_ftype_ptr,
5026 BUILT_IN_RETURN, NULL_PTR);
5028 /* Currently under experimentation. */
5029 builtin_function ("__builtin_memcpy", memcpy_ftype,
5030 BUILT_IN_MEMCPY, "memcpy");
5031 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet,
5032 BUILT_IN_MEMCMP, "memcmp");
5033 builtin_function ("__builtin_strcmp", int_ftype_string_string,
5034 BUILT_IN_STRCMP, "strcmp");
5035 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr,
5036 BUILT_IN_STRCPY, "strcpy");
5037 builtin_function ("__builtin_strlen", strlen_ftype,
5038 BUILT_IN_STRLEN, "strlen");
5039 builtin_function ("__builtin_sqrtf", float_ftype_float,
5040 BUILT_IN_FSQRT, "sqrtf");
5041 builtin_function ("__builtin_fsqrt", double_ftype_double,
5042 BUILT_IN_FSQRT, NULL_PTR);
5043 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble,
5044 BUILT_IN_FSQRT, "sqrtl");
5045 builtin_function ("__builtin_sinf", float_ftype_float,
5046 BUILT_IN_SIN, "sinf");
5047 builtin_function ("__builtin_sin", double_ftype_double,
5048 BUILT_IN_SIN, "sin");
5049 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble,
5050 BUILT_IN_SIN, "sinl");
5051 builtin_function ("__builtin_cosf", float_ftype_float,
5052 BUILT_IN_COS, "cosf");
5053 builtin_function ("__builtin_cos", double_ftype_double,
5054 BUILT_IN_COS, "cos");
5055 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble,
5056 BUILT_IN_COS, "cosl");
5058 if (!flag_no_builtin)
5060 #if 0 /* These do not work well with libg++. */
5061 builtin_function ("abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
5062 builtin_function ("fabs", double_ftype_double, BUILT_IN_FABS, NULL_PTR);
5063 builtin_function ("labs", long_ftype_long, BUILT_IN_LABS, NULL_PTR);
5065 builtin_function ("fabsf", float_ftype_float, BUILT_IN_FABS, NULL_PTR);
5066 builtin_function ("fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
5068 builtin_function ("memcpy", memcpy_ftype, BUILT_IN_MEMCPY, NULL_PTR);
5069 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet, BUILT_IN_MEMCMP,
5071 builtin_function ("strcmp", int_ftype_string_string, BUILT_IN_STRCMP,
5073 builtin_function ("strcpy", string_ftype_ptr_ptr, BUILT_IN_STRCPY,
5075 builtin_function ("strlen", strlen_ftype, BUILT_IN_STRLEN, NULL_PTR);
5076 builtin_function ("sqrtf", float_ftype_float, BUILT_IN_FSQRT, NULL_PTR);
5077 builtin_function ("sqrt", double_ftype_double, BUILT_IN_FSQRT, NULL_PTR);
5078 builtin_function ("sqrtl", ldouble_ftype_ldouble, BUILT_IN_FSQRT,
5080 builtin_function ("sinf", float_ftype_float, BUILT_IN_SIN, NULL_PTR);
5081 builtin_function ("sin", double_ftype_double, BUILT_IN_SIN, NULL_PTR);
5082 builtin_function ("sinl", ldouble_ftype_ldouble, BUILT_IN_SIN, NULL_PTR);
5083 builtin_function ("cosf", float_ftype_float, BUILT_IN_COS, NULL_PTR);
5084 builtin_function ("cos", double_ftype_double, BUILT_IN_COS, NULL_PTR);
5085 builtin_function ("cosl", ldouble_ftype_ldouble, BUILT_IN_COS, NULL_PTR);
5087 /* Declare these functions volatile
5088 to avoid spurious "control drops through" warnings. */
5089 temp = builtin_function ("abort", void_ftype,
5090 NOT_BUILT_IN, NULL_PTR);
5091 TREE_THIS_VOLATILE (temp) = 1;
5092 TREE_SIDE_EFFECTS (temp) = 1;
5093 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
5095 DECL_BUILT_IN_NONANSI (temp) = 1;
5096 temp = builtin_function ("exit", void_ftype_int,
5097 NOT_BUILT_IN, NULL_PTR);
5098 TREE_THIS_VOLATILE (temp) = 1;
5099 TREE_SIDE_EFFECTS (temp) = 1;
5100 DECL_BUILT_IN_NONANSI (temp) = 1;
5104 /* Support for these has not been written in either expand_builtin
5105 or build_function_call. */
5106 builtin_function ("__builtin_div", default_ftype, BUILT_IN_DIV, NULL_PTR);
5107 builtin_function ("__builtin_ldiv", default_ftype, BUILT_IN_LDIV, NULL_PTR);
5108 builtin_function ("__builtin_ffloor", double_ftype_double, BUILT_IN_FFLOOR,
5110 builtin_function ("__builtin_fceil", double_ftype_double, BUILT_IN_FCEIL,
5112 builtin_function ("__builtin_fmod", double_ftype_double_double,
5113 BUILT_IN_FMOD, NULL_PTR);
5114 builtin_function ("__builtin_frem", double_ftype_double_double,
5115 BUILT_IN_FREM, NULL_PTR);
5116 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int,
5117 BUILT_IN_MEMSET, NULL_PTR);
5118 builtin_function ("__builtin_getexp", double_ftype_double, BUILT_IN_GETEXP,
5120 builtin_function ("__builtin_getman", double_ftype_double, BUILT_IN_GETMAN,
5124 /* C++ extensions */
5126 unknown_type_node = make_node (UNKNOWN_TYPE);
5127 decl = pushdecl (build_decl (TYPE_DECL, get_identifier ("unknown type"),
5128 unknown_type_node));
5129 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5130 DECL_IGNORED_P (decl) = 1;
5131 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
5132 TYPE_SIZE (unknown_type_node) = TYPE_SIZE (void_type_node);
5133 TYPE_ALIGN (unknown_type_node) = 1;
5134 TYPE_MODE (unknown_type_node) = TYPE_MODE (void_type_node);
5135 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
5136 TREE_TYPE (unknown_type_node) = unknown_type_node;
5137 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same result. */
5138 TYPE_POINTER_TO (unknown_type_node) = unknown_type_node;
5139 TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node;
5141 /* This is for handling opaque types in signatures. */
5142 opaque_type_node = copy_node (ptr_type_node);
5143 TYPE_MAIN_VARIANT (opaque_type_node) = opaque_type_node;
5144 record_builtin_type (RID_MAX, 0, opaque_type_node);
5146 /* This is special for C++ so functions can be overloaded. */
5148 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE)));
5149 wchar_type_size = TYPE_PRECISION (wchar_type_node);
5150 signed_wchar_type_node = make_signed_type (wchar_type_size);
5151 unsigned_wchar_type_node = make_unsigned_type (wchar_type_size);
5153 = TREE_UNSIGNED (wchar_type_node)
5154 ? unsigned_wchar_type_node
5155 : signed_wchar_type_node;
5156 record_builtin_type (RID_WCHAR, "__wchar_t", wchar_type_node);
5158 /* Artificial declaration of wchar_t -- can be bashed */
5159 wchar_decl_node = build_decl (TYPE_DECL, get_identifier ("wchar_t"),
5161 pushdecl (wchar_decl_node);
5163 /* This is for wide string constants. */
5164 wchar_array_type_node
5165 = build_array_type (wchar_type_node, array_domain_type);
5167 if (flag_vtable_thunks)
5169 /* Make sure we get a unique function type, so we can give
5170 its pointer type a name. (This wins for gdb.) */
5171 tree vfunc_type = make_node (FUNCTION_TYPE);
5172 TREE_TYPE (vfunc_type) = integer_type_node;
5173 TYPE_ARG_TYPES (vfunc_type) = NULL_TREE;
5174 layout_type (vfunc_type);
5176 vtable_entry_type = build_pointer_type (vfunc_type);
5180 vtable_entry_type = make_lang_type (RECORD_TYPE);
5181 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
5183 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
5185 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
5187 finish_builtin_type (vtable_entry_type, VTBL_PTR_TYPE, fields, 2,
5190 /* Make this part of an invisible union. */
5191 fields[3] = copy_node (fields[2]);
5192 TREE_TYPE (fields[3]) = delta_type_node;
5193 DECL_NAME (fields[3]) = delta2_identifier;
5194 DECL_MODE (fields[3]) = TYPE_MODE (delta_type_node);
5195 DECL_SIZE (fields[3]) = TYPE_SIZE (delta_type_node);
5196 TREE_UNSIGNED (fields[3]) = 0;
5197 TREE_CHAIN (fields[2]) = fields[3];
5198 vtable_entry_type = build_type_variant (vtable_entry_type, 1, 0);
5200 record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type);
5203 = build_array_type (vtable_entry_type, NULL_TREE);
5204 layout_type (vtbl_type_node);
5205 vtbl_type_node = cp_build_type_variant (vtbl_type_node, 1, 0);
5206 record_builtin_type (RID_MAX, NULL_PTR, vtbl_type_node);
5208 /* Simplify life by making a "sigtable_entry_type". Give its
5209 fields names so that the debugger can use them. */
5211 if (flag_handle_signatures)
5213 sigtable_entry_type = make_lang_type (RECORD_TYPE);
5214 fields[0] = build_lang_field_decl (FIELD_DECL, tag_identifier,
5216 fields[1] = build_lang_field_decl (FIELD_DECL, vb_off_identifier,
5218 fields[2] = build_lang_field_decl (FIELD_DECL, delta_identifier,
5220 fields[3] = build_lang_field_decl (FIELD_DECL, index_identifier,
5222 fields[4] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
5225 /* Set the alignment to the max of the alignment of ptr_type_node and
5226 delta_type_node. Double alignment wastes a word on the Sparc. */
5227 finish_builtin_type (sigtable_entry_type, SIGTABLE_PTR_TYPE, fields, 4,
5228 (TYPE_ALIGN (ptr_type_node) > TYPE_ALIGN (delta_type_node))
5232 /* Make this part of an invisible union. */
5233 fields[5] = copy_node (fields[4]);
5234 TREE_TYPE (fields[5]) = delta_type_node;
5235 DECL_NAME (fields[5]) = vt_off_identifier;
5236 DECL_MODE (fields[5]) = TYPE_MODE (delta_type_node);
5237 DECL_SIZE (fields[5]) = TYPE_SIZE (delta_type_node);
5238 TREE_UNSIGNED (fields[5]) = 0;
5239 TREE_CHAIN (fields[4]) = fields[5];
5241 sigtable_entry_type = build_type_variant (sigtable_entry_type, 1, 0);
5242 record_builtin_type (RID_MAX, SIGTABLE_PTR_TYPE, sigtable_entry_type);
5248 /* Must build __t_desc type. Currently, type descriptors look like this:
5255 struct __t_desc *points_to;
5256 int ivars_count, meths_count;
5257 struct __i_desc *ivars[];
5258 struct __m_desc *meths[];
5259 struct __t_desc *parents[];
5260 struct __t_desc *vbases[];
5264 ...as per Linton's paper. */
5266 __t_desc_type_node = make_lang_type (RECORD_TYPE);
5267 __i_desc_type_node = make_lang_type (RECORD_TYPE);
5268 __m_desc_type_node = make_lang_type (RECORD_TYPE);
5269 __t_desc_array_type =
5270 build_array_type (build_pointer_type (__t_desc_type_node), NULL_TREE);
5271 __i_desc_array_type =
5272 build_array_type (build_pointer_type (__i_desc_type_node), NULL_TREE);
5273 __m_desc_array_type =
5274 build_array_type (build_pointer_type (__m_desc_type_node), NULL_TREE);
5276 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5278 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("size"),
5279 unsigned_type_node);
5280 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("bits"),
5281 unsigned_type_node);
5282 fields[3] = build_lang_field_decl (FIELD_DECL,
5283 get_identifier ("points_to"),
5284 build_pointer_type (__t_desc_type_node));
5285 fields[4] = build_lang_field_decl (FIELD_DECL,
5286 get_identifier ("ivars_count"),
5288 fields[5] = build_lang_field_decl (FIELD_DECL,
5289 get_identifier ("meths_count"),
5291 fields[6] = build_lang_field_decl (FIELD_DECL, get_identifier ("ivars"),
5292 build_pointer_type (__i_desc_array_type));
5293 fields[7] = build_lang_field_decl (FIELD_DECL, get_identifier ("meths"),
5294 build_pointer_type (__m_desc_array_type));
5295 fields[8] = build_lang_field_decl (FIELD_DECL, get_identifier ("parents"),
5296 build_pointer_type (__t_desc_array_type));
5297 fields[9] = build_lang_field_decl (FIELD_DECL, get_identifier ("vbases"),
5298 build_pointer_type (__t_desc_array_type));
5299 fields[10] = build_lang_field_decl (FIELD_DECL, get_identifier ("offsets"),
5300 build_pointer_type (integer_type_node));
5301 finish_builtin_type (__t_desc_type_node, "__t_desc", fields, 10, integer_type_node);
5303 /* ivar descriptors look like this:
5309 struct __t_desc *type;
5313 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5315 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("offset"),
5317 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("type"),
5318 build_pointer_type (__t_desc_type_node));
5319 finish_builtin_type (__i_desc_type_node, "__i_desc", fields, 2,
5322 /* method descriptors look like this:
5328 struct __t_desc *vcontext;
5329 struct __t_desc *return_type;
5332 short required_parms;
5333 struct __t_desc *parm_types[];
5337 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5339 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("vindex"),
5341 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("vcontext"),
5342 build_pointer_type (__t_desc_type_node));
5343 fields[3] = build_lang_field_decl (FIELD_DECL, get_identifier ("return_type"),
5344 build_pointer_type (__t_desc_type_node));
5345 fields[4] = build_lang_field_decl (FIELD_DECL, get_identifier ("address"),
5346 build_pointer_type (default_function_type));
5347 fields[5] = build_lang_field_decl (FIELD_DECL, get_identifier ("parm_count"),
5348 short_integer_type_node);
5349 fields[6] = build_lang_field_decl (FIELD_DECL, get_identifier ("required_parms"),
5350 short_integer_type_node);
5351 fields[7] = build_lang_field_decl (FIELD_DECL, get_identifier ("parm_types"),
5352 build_pointer_type (build_array_type (build_pointer_type (__t_desc_type_node), NULL_TREE)));
5353 finish_builtin_type (__m_desc_type_node, "__m_desc", fields, 7,
5356 #endif /*flag_rtti*/
5359 current_lang_name = lang_name_cplusplus;
5361 auto_function (ansi_opname[(int) NEW_EXPR], ptr_ftype_sizetype,
5363 auto_function (ansi_opname[(int) VEC_NEW_EXPR], ptr_ftype_sizetype,
5365 auto_function (ansi_opname[(int) DELETE_EXPR], void_ftype_ptr,
5367 auto_function (ansi_opname[(int) VEC_DELETE_EXPR], void_ftype_ptr,
5371 = define_function ("__pure_virtual", void_ftype,
5372 NOT_BUILT_IN, 0, 0);
5374 /* Perform other language dependent initializations. */
5375 init_class_processing ();
5376 init_init_processing ();
5377 init_search_processing ();
5378 init_rtti_processing ();
5380 if (flag_exceptions)
5381 init_exception_processing ();
5384 flag_inline_functions = 0;
5387 if (! supports_one_only ())
5390 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
5391 declare_function_name ();
5393 /* Prepare to check format strings against argument lists. */
5394 init_function_format_info ();
5397 /* initialize type descriptor type node of various rtti type. */
5404 tdecl = lookup_name (get_identifier ("type_info"), 0);
5405 if (tdecl == NULL_TREE)
5407 __t_desc_type_node = TREE_TYPE (tdecl);
5409 __tp_desc_type_node = build_pointer_type (__t_desc_type_node);
5413 tdecl = lookup_name (get_identifier ("__baselist_type_info"), 0);
5414 if (tdecl == NULL_TREE)
5416 __baselist_desc_type_node = TREE_TYPE (tdecl);
5419 tdecl = lookup_name (get_identifier ("__builtin_type_info"), 0);
5420 if (tdecl == NULL_TREE)
5422 __bltn_desc_type_node = TREE_TYPE (tdecl);
5424 tdecl = lookup_name (get_identifier ("__user_type_info"), 0);
5425 if (tdecl == NULL_TREE)
5427 __user_desc_type_node = TREE_TYPE (tdecl);
5429 tdecl = lookup_name (get_identifier ("__class_type_info"), 0);
5430 if (tdecl == NULL_TREE)
5432 __class_desc_type_node = TREE_TYPE (tdecl);
5434 tdecl = lookup_field (__class_desc_type_node,
5435 get_identifier ("access_mode"), 0, 0);
5436 if (tdecl == NULL_TREE)
5438 __access_mode_type_node = TREE_TYPE (tdecl);
5440 tdecl = lookup_name (get_identifier ("__attr_type_info"), 0);
5441 if (tdecl == NULL_TREE)
5443 __attr_desc_type_node = TREE_TYPE (tdecl);
5445 tdecl = lookup_name (get_identifier ("__pointer_type_info"), 0);
5446 if (tdecl == NULL_TREE)
5448 __ptr_desc_type_node = TREE_TYPE (tdecl);
5450 tdecl = lookup_name (get_identifier ("__func_type_info"), 0);
5451 if (tdecl == NULL_TREE)
5453 __func_desc_type_node = TREE_TYPE (tdecl);
5455 tdecl = lookup_name (get_identifier ("__ptmf_type_info"), 0);
5456 if (tdecl == NULL_TREE)
5458 __ptmf_desc_type_node = TREE_TYPE (tdecl);
5460 tdecl = lookup_name (get_identifier ("__ptmd_type_info"), 0);
5461 if (tdecl == NULL_TREE)
5463 __ptmd_desc_type_node = TREE_TYPE (tdecl);
5467 /* Make a definition for a builtin function named NAME and whose data type
5468 is TYPE. TYPE should be a function type with argument types.
5469 FUNCTION_CODE tells later passes how to compile calls to this function.
5470 See tree.h for its possible values.
5472 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
5473 the name to be called if we can't opencode the function. */
5476 define_function (name, type, function_code, pfn, library_name)
5479 enum built_in_function function_code;
5483 tree decl = build_lang_decl (FUNCTION_DECL, get_identifier (name), type);
5484 DECL_EXTERNAL (decl) = 1;
5485 TREE_PUBLIC (decl) = 1;
5486 DECL_ARTIFICIAL (decl) = 1;
5488 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
5489 we cannot change DECL_ASSEMBLER_NAME until we have installed this
5490 function in the namespace. */
5491 if (pfn) (*pfn) (decl);
5493 DECL_ASSEMBLER_NAME (decl) = get_identifier (library_name);
5494 make_function_rtl (decl);
5495 if (function_code != NOT_BUILT_IN)
5497 DECL_BUILT_IN (decl) = 1;
5498 DECL_FUNCTION_CODE (decl) = function_code;
5503 /* Called when a declaration is seen that contains no names to declare.
5504 If its type is a reference to a structure, union or enum inherited
5505 from a containing scope, shadow that tag name for the current scope
5506 with a forward reference.
5507 If its type defines a new named structure or union
5508 or defines an enum, it is valid but we need not do anything here.
5509 Otherwise, it is an error.
5511 C++: may have to grok the declspecs to learn about static,
5512 complain for anonymous unions. */
5515 shadow_tag (declspecs)
5519 tree ob_modifier = NULL_TREE;
5521 register enum tree_code code, ok_code = ERROR_MARK;
5522 register tree t = NULL_TREE;
5524 for (link = declspecs; link; link = TREE_CHAIN (link))
5526 register tree value = TREE_VALUE (link);
5528 code = TREE_CODE (value);
5529 if (IS_AGGR_TYPE_CODE (code) || code == ENUMERAL_TYPE)
5531 my_friendly_assert (TYPE_MAIN_DECL (value) != NULL_TREE, 261);
5533 if (IS_AGGR_TYPE (value) && CLASSTYPE_USE_TEMPLATE (value))
5535 if (CLASSTYPE_IMPLICIT_INSTANTIATION (value)
5536 && TYPE_SIZE (value) == NULL_TREE)
5538 SET_CLASSTYPE_TEMPLATE_SPECIALIZATION (value);
5539 if (processing_template_decl)
5540 push_template_decl (TYPE_MAIN_DECL (value));
5542 else if (CLASSTYPE_TEMPLATE_INSTANTIATION (value))
5543 cp_error ("specialization after instantiation of `%T'", value);
5550 else if (value == ridpointers[(int) RID_STATIC]
5551 || value == ridpointers[(int) RID_EXTERN]
5552 || value == ridpointers[(int) RID_AUTO]
5553 || value == ridpointers[(int) RID_REGISTER]
5554 || value == ridpointers[(int) RID_INLINE]
5555 || value == ridpointers[(int) RID_VIRTUAL]
5556 || value == ridpointers[(int) RID_EXPLICIT])
5557 ob_modifier = value;
5560 /* This is where the variables in an anonymous union are
5561 declared. An anonymous union declaration looks like:
5563 because there is no declarator after the union, the parser
5564 sends that declaration here. */
5565 if (ok_code == UNION_TYPE
5567 && ((TREE_CODE (TYPE_NAME (t)) == IDENTIFIER_NODE
5568 && ANON_AGGRNAME_P (TYPE_NAME (t)))
5569 || (TREE_CODE (TYPE_NAME (t)) == TYPE_DECL
5570 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))))
5572 /* See also grok_x_components. */
5575 /* Wipe out memory of synthesized methods */
5576 TYPE_HAS_CONSTRUCTOR (t) = 0;
5577 TYPE_HAS_DEFAULT_CONSTRUCTOR (t) = 0;
5578 TYPE_HAS_INIT_REF (t) = 0;
5579 TYPE_HAS_CONST_INIT_REF (t) = 0;
5580 TYPE_HAS_ASSIGN_REF (t) = 0;
5581 TYPE_HAS_ASSIGNMENT (t) = 0;
5582 TYPE_HAS_CONST_ASSIGN_REF (t) = 0;
5584 q = &TYPE_METHODS (t);
5587 if (DECL_ARTIFICIAL (*q))
5588 *q = TREE_CHAIN (*q);
5590 q = &TREE_CHAIN (*q);
5593 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
5594 function members. */
5595 if (TYPE_METHODS (t))
5596 error ("an anonymous union cannot have function members");
5598 if (TYPE_FIELDS (t))
5600 tree decl = grokdeclarator (NULL_TREE, declspecs, NORMAL, 0,
5602 finish_anon_union (decl);
5607 /* Anonymous unions are objects, that's why we only check for
5608 inappropriate specifiers in this branch. */
5612 if (ob_modifier == ridpointers[(int) RID_INLINE]
5613 || ob_modifier == ridpointers[(int) RID_VIRTUAL])
5614 cp_error ("`%D' can only be specified for functions", ob_modifier);
5615 else if (ob_modifier == ridpointers[(int) RID_EXPLICIT])
5616 cp_error ("`%D' can only be specified for constructors",
5619 cp_error ("`%D' can only be specified for objects and functions",
5624 pedwarn ("abstract declarator used as declaration");
5625 else if (found_tag > 1)
5626 pedwarn ("multiple types in one declaration");
5630 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
5633 groktypename (typename)
5636 if (TREE_CODE (typename) != TREE_LIST)
5638 return grokdeclarator (TREE_VALUE (typename),
5639 TREE_PURPOSE (typename),
5640 TYPENAME, 0, NULL_TREE);
5643 /* Decode a declarator in an ordinary declaration or data definition.
5644 This is called as soon as the type information and variable name
5645 have been parsed, before parsing the initializer if any.
5646 Here we create the ..._DECL node, fill in its type,
5647 and put it on the list of decls for the current context.
5648 The ..._DECL node is returned as the value.
5650 Exception: for arrays where the length is not specified,
5651 the type is left null, to be filled in by `cp_finish_decl'.
5653 Function definitions do not come here; they go to start_function
5654 instead. However, external and forward declarations of functions
5655 do go through here. Structure field declarations are done by
5656 grokfield and not through here. */
5658 /* Set this to zero to debug not using the temporary obstack
5659 to parse initializers. */
5660 int debug_temp_inits = 1;
5662 void start_decl_1 ();
5665 start_decl (declarator, declspecs, initialized)
5666 tree declarator, declspecs;
5670 register tree type, tem;
5672 extern int have_extern_spec;
5673 extern int used_extern_spec;
5676 /* See code below that used this. */
5677 int init_written = initialized;
5680 /* This should only be done once on the top most decl. */
5681 if (have_extern_spec && !used_extern_spec)
5683 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"),
5685 used_extern_spec = 1;
5688 decl = grokdeclarator (declarator, declspecs, NORMAL, initialized,
5690 if (decl == NULL_TREE || decl == void_type_node)
5693 type = TREE_TYPE (decl);
5695 /* Don't lose if destructors must be executed at file-level. */
5696 if (! processing_template_decl && TREE_STATIC (decl)
5697 && TYPE_NEEDS_DESTRUCTOR (complete_type (type))
5698 && !TREE_PERMANENT (decl))
5700 push_obstacks (&permanent_obstack, &permanent_obstack);
5701 decl = copy_node (decl);
5702 if (TREE_CODE (type) == ARRAY_TYPE)
5704 tree itype = TYPE_DOMAIN (type);
5705 if (itype && ! TREE_PERMANENT (itype))
5707 itype = build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype)));
5708 type = build_cplus_array_type (TREE_TYPE (type), itype);
5709 TREE_TYPE (decl) = type;
5716 = (TREE_CODE (decl) == FUNCTION_DECL && DECL_VIRTUAL_P (decl))
5717 ? DECL_CLASS_CONTEXT (decl)
5718 : DECL_CONTEXT (decl);
5721 /* Is it valid for this decl to have an initializer at all?
5722 If not, set INITIALIZED to zero, which will indirectly
5723 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
5724 switch (TREE_CODE (decl))
5727 /* typedef foo = bar means give foo the same type as bar.
5728 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
5729 Any other case of an initialization in a TYPE_DECL is an error. */
5730 if (pedantic || list_length (declspecs) > 1)
5732 cp_error ("typedef `%D' is initialized", decl);
5738 cp_error ("function `%#D' is initialized like a variable", decl);
5743 if (! processing_template_decl)
5745 if (TYPE_SIZE (type) != NULL_TREE
5746 && ! TREE_CONSTANT (TYPE_SIZE (type)))
5749 ("variable-sized object `%D' may not be initialized", decl);
5753 if (TREE_CODE (type) == ARRAY_TYPE
5754 && TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
5757 ("elements of array `%#D' have incomplete type", decl);
5765 if (! toplevel_bindings_p ()
5766 && DECL_EXTERNAL (decl))
5767 cp_warning ("declaration of `%#D' has `extern' and is initialized",
5769 DECL_EXTERNAL (decl) = 0;
5770 if (toplevel_bindings_p ())
5771 TREE_STATIC (decl) = 1;
5773 /* Tell `pushdecl' this is an initialized decl
5774 even though we don't yet have the initializer expression.
5775 Also tell `cp_finish_decl' it may store the real initializer. */
5776 DECL_INITIAL (decl) = error_mark_node;
5779 if (context && TYPE_SIZE (complete_type (context)) != NULL_TREE)
5781 if (TREE_CODE (decl) == VAR_DECL)
5783 tree field = lookup_field (context, DECL_NAME (decl), 0, 0);
5784 if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
5785 cp_error ("`%#D' is not a static member of `%#T'", decl, context);
5788 if (DECL_CONTEXT (field) != context)
5789 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'", DECL_CONTEXT (field), DECL_NAME (decl), context, DECL_NAME (decl));
5790 if (duplicate_decls (decl, field))
5796 tree field = check_classfn (context, decl);
5797 if (field && duplicate_decls (decl, field))
5801 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
5802 if (DECL_LANG_SPECIFIC (decl))
5803 DECL_IN_AGGR_P (decl) = 0;
5804 if (DECL_USE_TEMPLATE (decl) || CLASSTYPE_USE_TEMPLATE (context))
5805 SET_DECL_TEMPLATE_SPECIALIZATION (decl);
5807 /* Stupid stupid stupid stupid (jason 7/21/95) */
5808 if (pedantic && DECL_EXTERNAL (decl)
5809 && ! DECL_TEMPLATE_SPECIALIZATION (decl))
5810 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
5813 pushclass (context, 2);
5816 /* Add this decl to the current binding level, but not if it
5817 comes from another scope, e.g. a static member variable.
5818 TEM may equal DECL or it may be a previous decl of the same name. */
5820 if ((TREE_CODE (decl) != PARM_DECL && DECL_CONTEXT (decl) != NULL_TREE)
5821 || (TREE_CODE (decl) == TEMPLATE_DECL && !global_bindings_p ())
5822 || TREE_CODE (type) == LANG_TYPE)
5825 tem = pushdecl (decl);
5827 if (processing_template_decl)
5829 if (! current_function_decl)
5830 push_template_decl (tem);
5831 else if (minimal_parse_mode)
5833 = build_min_nt (DECL_STMT, copy_to_permanent (declarator),
5834 copy_to_permanent (declspecs),
5839 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
5840 /* Tell the back-end to use or not use .common as appropriate. If we say
5841 -fconserve-space, we want this to save .data space, at the expense of
5842 wrong semantics. If we say -fno-conserve-space, we want this to
5843 produce errors about redefs; to do this we force variables into the
5845 DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem);
5848 if (! processing_template_decl)
5851 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
5852 push_obstacks_nochange ();
5855 /* We have no way of knowing whether the initializer will need to be
5856 evaluated at run-time or not until we've parsed it, so let's just put
5857 it in the permanent obstack. (jason) */
5859 && ! (TREE_CODE (tem) == PARM_DECL
5860 || (TREE_READONLY (tem)
5861 && (TREE_CODE (tem) == VAR_DECL
5862 || TREE_CODE (tem) == FIELD_DECL))))
5864 /* When parsing and digesting the initializer,
5865 use temporary storage. Do this even if we will ignore the value. */
5866 if (toplevel_bindings_p () && debug_temp_inits)
5868 if (processing_template_decl
5869 || TYPE_NEEDS_CONSTRUCTING (type)
5870 || TREE_CODE (type) == REFERENCE_TYPE)
5871 /* In this case, the initializer must lay down in permanent
5872 storage, since it will be saved until `finish_file' is run. */
5875 temporary_allocation ();
5887 tree type = TREE_TYPE (decl);
5888 int initialized = (DECL_INITIAL (decl) != NULL_TREE);
5890 /* If this type of object needs a cleanup, and control may
5891 jump past it, make a new binding level so that it is cleaned
5892 up only when it is initialized first. */
5893 if (TYPE_NEEDS_DESTRUCTOR (type)
5894 && current_binding_level->more_cleanups_ok == 0)
5895 pushlevel_temporary (1);
5898 /* Is it valid for this decl to have an initializer at all?
5899 If not, set INITIALIZED to zero, which will indirectly
5900 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
5902 /* Don't allow initializations for incomplete types except for
5903 arrays which might be completed by the initialization. */
5904 if (type == error_mark_node)
5905 ; /* Don't complain again. */
5906 else if (TYPE_SIZE (complete_type (type)) != NULL_TREE)
5907 ; /* A complete type is ok. */
5908 else if (TREE_CODE (type) != ARRAY_TYPE)
5910 cp_error ("variable `%#D' has initializer but incomplete type",
5914 else if (TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
5916 if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
5917 cp_error ("elements of array `%#D' have incomplete type", decl);
5918 /* else we already gave an error in start_decl. */
5924 && TREE_CODE (decl) != TYPE_DECL
5925 && TREE_CODE (decl) != TEMPLATE_DECL
5926 && IS_AGGR_TYPE (type) && ! DECL_EXTERNAL (decl))
5928 if ((! processing_template_decl || ! uses_template_parms (type))
5929 && TYPE_SIZE (complete_type (type)) == NULL_TREE)
5931 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
5933 /* Change the type so that assemble_variable will give
5934 DECL an rtl we can live with: (mem (const_int 0)). */
5935 TREE_TYPE (decl) = error_mark_node;
5936 type = error_mark_node;
5940 /* If any base type in the hierarchy of TYPE needs a constructor,
5941 then we set initialized to 1. This way any nodes which are
5942 created for the purposes of initializing this aggregate
5943 will live as long as it does. This is necessary for global
5944 aggregates which do not have their initializers processed until
5945 the end of the file. */
5946 initialized = TYPE_NEEDS_CONSTRUCTING (type);
5951 /* We don't do this yet for GNU C++. */
5952 /* For a local variable, define the RTL now. */
5953 if (! toplevel_bindings_p ()
5954 /* But not if this is a duplicate decl
5955 and we preserved the rtl from the previous one
5956 (which may or may not happen). */
5957 && DECL_RTL (tem) == NULL_RTX)
5959 if (TYPE_SIZE (TREE_TYPE (tem)) != NULL_TREE)
5961 else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE
5962 && DECL_INITIAL (tem) != NULL_TREE)
5968 DECL_INITIAL (decl) = NULL_TREE;
5971 /* Handle initialization of references.
5972 These three arguments from from `cp_finish_decl', and have the
5973 same meaning here that they do there.
5975 Quotes on semantics can be found in ARM 8.4.3. */
5978 grok_reference_init (decl, type, init, cleanupp)
5979 tree decl, type, init;
5984 if (init == NULL_TREE)
5986 if ((DECL_LANG_SPECIFIC (decl) == 0
5987 || DECL_IN_AGGR_P (decl) == 0)
5988 && ! DECL_THIS_EXTERN (decl))
5990 cp_error ("`%D' declared as reference but not initialized", decl);
5991 if (TREE_CODE (decl) == VAR_DECL)
5992 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
5997 if (init == error_mark_node)
6000 if (TREE_CODE (type) == REFERENCE_TYPE
6001 && TREE_CODE (init) == CONSTRUCTOR)
6003 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl);
6007 if (TREE_TYPE (init) && TREE_CODE (TREE_TYPE (init)) == UNKNOWN_TYPE)
6008 /* decay_conversion is probably wrong for references to functions. */
6009 init = decay_conversion (instantiate_type (TREE_TYPE (type), init, 1));
6011 if (TREE_CODE (init) == TREE_LIST)
6012 init = build_compound_expr (init);
6014 if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE)
6015 init = convert_from_reference (init);
6017 if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
6018 && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
6020 /* Note: default conversion is only called in very special cases. */
6021 init = default_conversion (init);
6024 tmp = convert_to_reference
6025 (type, init, CONV_IMPLICIT,
6026 LOOKUP_SPECULATIVELY|LOOKUP_NORMAL|DIRECT_BIND, decl);
6028 if (tmp == error_mark_node)
6030 else if (tmp != NULL_TREE)
6033 DECL_INITIAL (decl) = save_expr (init);
6037 cp_error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init));
6041 /* ?? Can this be optimized in some cases to
6042 hand back the DECL_INITIAL slot?? */
6043 if (TYPE_SIZE (TREE_TYPE (type)))
6045 init = convert_from_reference (decl);
6046 if (TREE_PERMANENT (decl))
6047 init = copy_to_permanent (init);
6048 SET_DECL_REFERENCE_SLOT (decl, init);
6051 if (TREE_STATIC (decl) && ! TREE_CONSTANT (DECL_INITIAL (decl)))
6053 expand_static_init (decl, DECL_INITIAL (decl));
6054 DECL_INITIAL (decl) = NULL_TREE;
6059 if (TREE_CODE (decl) == VAR_DECL)
6060 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6064 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6065 mucking with forces it does not comprehend (i.e. initialization with a
6066 constructor). If we are at global scope and won't go into COMMON, fill
6067 it in with a dummy CONSTRUCTOR to force the variable into .data;
6068 otherwise we can use error_mark_node. */
6071 obscure_complex_init (decl, init)
6074 if (! flag_no_inline && TREE_STATIC (decl))
6076 if (extract_init (decl, init))
6080 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6081 if (toplevel_bindings_p () && ! DECL_COMMON (decl))
6082 DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE,
6086 DECL_INITIAL (decl) = error_mark_node;
6091 /* Finish processing of a declaration;
6092 install its line number and initial value.
6093 If the length of an array type is not known before,
6094 it must be determined now, from the initial value, or it is an error.
6096 Call `pop_obstacks' iff NEED_POP is nonzero.
6098 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6099 for aggregates that have constructors alive on the permanent obstack,
6100 so that the global initializing functions can be written at the end.
6102 INIT0 holds the value of an initializer that should be allowed to escape
6105 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6106 if the (init) syntax was used.
6108 For functions that take default parameters, DECL points to its
6109 "maximal" instantiation. `cp_finish_decl' must then also declared its
6110 subsequently lower and lower forms of instantiation, checking for
6111 ambiguity as it goes. This can be sped up later. */
6114 cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
6121 tree cleanup = NULL_TREE, ttype;
6123 int temporary = allocation_temporary_p ();
6124 char *asmspec = NULL;
6125 int was_readonly = 0;
6127 /* If this is 0, then we did not change obstacks. */
6131 error ("assignment (not initialization) in declaration");
6135 /* If a name was specified, get the string. */
6137 asmspec = TREE_STRING_POINTER (asmspec_tree);
6139 /* If the type of the thing we are declaring either has
6140 a constructor, or has a virtual function table pointer,
6141 AND its initialization was accepted by `start_decl',
6142 then we stayed on the permanent obstack through the
6143 declaration, otherwise, changed obstacks as GCC would. */
6145 type = TREE_TYPE (decl);
6147 if (type == error_mark_node)
6149 if (toplevel_bindings_p () && temporary)
6150 end_temporary_allocation ();
6155 if (processing_template_decl)
6157 if (init && DECL_INITIAL (decl))
6158 DECL_INITIAL (decl) = init;
6159 if (minimal_parse_mode && ! DECL_ARTIFICIAL (decl))
6161 tree stmt = DECL_VINDEX (decl);
6162 DECL_VINDEX (decl) = NULL_TREE;
6163 TREE_OPERAND (stmt, 2) = copy_to_permanent (init);
6169 /* Take care of TYPE_DECLs up front. */
6170 if (TREE_CODE (decl) == TYPE_DECL)
6172 if (init && DECL_INITIAL (decl))
6174 /* typedef foo = bar; store the type of bar as the type of foo. */
6175 TREE_TYPE (decl) = type = TREE_TYPE (init);
6176 DECL_INITIAL (decl) = init = NULL_TREE;
6178 if (type != error_mark_node
6179 && IS_AGGR_TYPE (type) && DECL_NAME (decl))
6181 if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
6182 cp_warning ("shadowing previous type declaration of `%#D'", decl);
6183 set_identifier_type_value (DECL_NAME (decl), type);
6184 CLASSTYPE_GOT_SEMICOLON (type) = 1;
6186 GNU_xref_decl (current_function_decl, decl);
6188 /* If we have installed this as the canonical typedef for this
6189 type, and that type has not been defined yet, delay emitting
6190 the debug informaion for it, as we will emit it later. */
6191 if (TYPE_MAIN_DECL (TREE_TYPE (decl)) == decl
6192 && TYPE_SIZE (TREE_TYPE (decl)) == NULL_TREE)
6193 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
6195 rest_of_decl_compilation (decl, NULL_PTR,
6196 DECL_CONTEXT (decl) == NULL_TREE, at_eof);
6199 if (TREE_CODE (decl) != FUNCTION_DECL)
6201 ttype = target_type (type);
6204 if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl)
6205 && TYPE_NEEDS_CONSTRUCTING (type))
6208 /* Currently, GNU C++ puts constants in text space, making them
6209 impossible to initialize. In the future, one would hope for
6210 an operating system which understood the difference between
6211 initialization and the running of a program. */
6213 TREE_READONLY (decl) = 0;
6216 if (TREE_CODE (decl) == FIELD_DECL)
6218 if (init && init != error_mark_node)
6219 my_friendly_assert (TREE_PERMANENT (init), 147);
6223 /* This must override the asm specifier which was placed
6224 by grokclassfn. Lay this out fresh. */
6225 DECL_RTL (TREE_TYPE (decl)) = NULL_RTX;
6226 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
6227 make_decl_rtl (decl, asmspec, 0);
6230 /* If `start_decl' didn't like having an initialization, ignore it now. */
6231 else if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE)
6233 else if (DECL_EXTERNAL (decl))
6235 else if (TREE_CODE (type) == REFERENCE_TYPE
6236 || (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE_REFERENCE (type)))
6238 if (TREE_STATIC (decl))
6239 make_decl_rtl (decl, NULL_PTR,
6240 toplevel_bindings_p ()
6241 || pseudo_global_level_p ());
6242 grok_reference_init (decl, type, init, &cleanup);
6246 GNU_xref_decl (current_function_decl, decl);
6248 if (TREE_CODE (decl) == FIELD_DECL)
6250 else if (TREE_CODE (decl) == CONST_DECL)
6252 my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148);
6254 DECL_INITIAL (decl) = init;
6256 /* This will keep us from needing to worry about our obstacks. */
6257 my_friendly_assert (init != NULL_TREE, 149);
6262 if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type))
6264 if (TREE_CODE (type) == ARRAY_TYPE)
6265 init = digest_init (type, init, (tree *) 0);
6266 else if (TREE_CODE (init) == CONSTRUCTOR)
6268 if (TYPE_NON_AGGREGATE_CLASS (type))
6270 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
6272 init = error_mark_node;
6275 goto dont_use_constructor;
6280 dont_use_constructor:
6281 if (TREE_CODE (init) != TREE_VEC)
6282 init = store_init_value (decl, init);
6286 /* We must hide the initializer so that expand_decl
6287 won't try to do something it does not understand. */
6288 init = obscure_complex_init (decl, init);
6290 else if (DECL_EXTERNAL (decl))
6292 else if (TREE_CODE_CLASS (TREE_CODE (type)) == 't'
6293 && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type)))
6296 while (TREE_CODE (ctype) == ARRAY_TYPE)
6297 ctype = TREE_TYPE (ctype);
6298 if (! TYPE_NEEDS_CONSTRUCTING (ctype))
6300 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype))
6301 cp_error ("structure `%D' with uninitialized const members", decl);
6302 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype))
6303 cp_error ("structure `%D' with uninitialized reference members",
6307 if (TREE_CODE (decl) == VAR_DECL
6308 && !DECL_INITIAL (decl)
6309 && !TYPE_NEEDS_CONSTRUCTING (type)
6310 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
6311 cp_error ("uninitialized const `%D'", decl);
6313 if (TYPE_SIZE (type) != NULL_TREE
6314 && TYPE_NEEDS_CONSTRUCTING (type))
6315 init = obscure_complex_init (decl, NULL_TREE);
6317 else if (TREE_CODE (decl) == VAR_DECL
6318 && TREE_CODE (type) != REFERENCE_TYPE
6319 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
6321 /* ``Unless explicitly declared extern, a const object does not have
6322 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
6323 However, if it's `const int foo = 1; const int foo;', don't complain
6324 about the second decl, since it does have an initializer before.
6325 We deliberately don't complain about arrays, because they're
6326 supposed to be initialized by a constructor. */
6327 if (! DECL_INITIAL (decl)
6328 && TREE_CODE (type) != ARRAY_TYPE
6329 && (!pedantic || !current_class_type))
6330 cp_error ("uninitialized const `%#D'", decl);
6333 /* For top-level declaration, the initial value was read in
6334 the temporary obstack. MAXINDEX, rtl, etc. to be made below
6335 must go in the permanent obstack; but don't discard the
6336 temporary data yet. */
6338 if (toplevel_bindings_p () && temporary)
6339 end_temporary_allocation ();
6341 /* Deduce size of array from initialization, if not already known. */
6343 if (TREE_CODE (type) == ARRAY_TYPE
6344 && TYPE_DOMAIN (type) == NULL_TREE
6345 && TREE_CODE (decl) != TYPE_DECL)
6348 = (TREE_STATIC (decl)
6349 /* Even if pedantic, an external linkage array
6350 may have incomplete type at first. */
6351 ? pedantic && ! DECL_EXTERNAL (decl)
6352 : !DECL_EXTERNAL (decl));
6353 tree initializer = init ? init : DECL_INITIAL (decl);
6354 int failure = complete_array_type (type, initializer, do_default);
6357 cp_error ("initializer fails to determine size of `%D'", decl);
6362 cp_error ("array size missing in `%D'", decl);
6363 /* If a `static' var's size isn't known, make it extern as
6364 well as static, so it does not get allocated. If it's not
6365 `static', then don't mark it extern; finish_incomplete_decl
6366 will give it a default size and it will get allocated. */
6367 else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
6368 DECL_EXTERNAL (decl) = 1;
6371 if (pedantic && TYPE_DOMAIN (type) != NULL_TREE
6372 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
6374 cp_error ("zero-size array `%D'", decl);
6376 layout_decl (decl, 0);
6379 if (TREE_CODE (decl) == VAR_DECL)
6381 if (DECL_SIZE (decl) == NULL_TREE
6382 && TYPE_SIZE (complete_type (TREE_TYPE (decl))) != NULL_TREE)
6383 layout_decl (decl, 0);
6385 if (TREE_STATIC (decl) && DECL_SIZE (decl) == NULL_TREE)
6387 /* A static variable with an incomplete type:
6388 that is an error if it is initialized.
6389 Otherwise, let it through, but if it is not `extern'
6390 then it may cause an error message later. */
6391 if (DECL_INITIAL (decl) != NULL_TREE)
6392 cp_error ("storage size of `%D' isn't known", decl);
6395 else if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
6397 /* An automatic variable with an incomplete type: that is an error.
6398 Don't talk about array types here, since we took care of that
6399 message in grokdeclarator. */
6400 cp_error ("storage size of `%D' isn't known", decl);
6401 TREE_TYPE (decl) = error_mark_node;
6403 else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype))
6404 /* Let debugger know it should output info for this type. */
6405 note_debug_info_needed (ttype);
6407 if (TREE_STATIC (decl) && DECL_CONTEXT (decl)
6408 && TREE_CODE_CLASS (TREE_CODE (DECL_CONTEXT (decl))) == 't')
6409 note_debug_info_needed (DECL_CONTEXT (decl));
6411 if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
6412 && DECL_SIZE (decl) != NULL_TREE
6413 && ! TREE_CONSTANT (DECL_SIZE (decl)))
6415 if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
6416 constant_expression_warning (DECL_SIZE (decl));
6418 cp_error ("storage size of `%D' isn't constant", decl);
6421 if (! DECL_EXTERNAL (decl) && TYPE_NEEDS_DESTRUCTOR (type)
6422 /* Cleanups for static variables are handled by `finish_file'. */
6423 && ! TREE_STATIC (decl))
6425 int yes = suspend_momentary ();
6426 cleanup = maybe_build_cleanup (decl);
6427 resume_momentary (yes);
6430 /* PARM_DECLs get cleanups, too. */
6431 else if (TREE_CODE (decl) == PARM_DECL && TYPE_NEEDS_DESTRUCTOR (type))
6434 end_temporary_allocation ();
6435 cleanup = maybe_build_cleanup (decl);
6437 resume_temporary_allocation ();
6440 /* Output the assembler code and/or RTL code for variables and functions,
6441 unless the type is an undefined structure or union.
6442 If not, it will get done when the type is completed. */
6444 was_incomplete = (DECL_SIZE (decl) == NULL_TREE);
6446 if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL
6447 || TREE_CODE (decl) == RESULT_DECL)
6449 /* ??? FIXME: What about nested classes? */
6450 int toplev = toplevel_bindings_p () || pseudo_global_level_p ();
6452 = (TREE_STATIC (decl) && TYPE_NEEDS_DESTRUCTOR (type)
6453 && allocation_temporary_p ());
6456 end_temporary_allocation ();
6458 if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl))
6459 make_decl_rtl (decl, NULL_PTR, toplev);
6460 else if (TREE_CODE (decl) == VAR_DECL
6461 && TREE_READONLY (decl)
6462 && DECL_INITIAL (decl) != NULL_TREE
6463 && DECL_INITIAL (decl) != error_mark_node
6464 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
6466 DECL_INITIAL (decl) = save_expr (DECL_INITIAL (decl));
6469 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
6472 && TREE_STATIC (decl)
6473 && ! TREE_SIDE_EFFECTS (decl)
6474 && ! TREE_PUBLIC (decl)
6475 && ! DECL_EXTERNAL (decl)
6476 && ! TYPE_NEEDS_DESTRUCTOR (type)
6477 && DECL_MODE (decl) != BLKmode)
6479 /* If this variable is really a constant, then fill its DECL_RTL
6480 slot with something which won't take up storage.
6481 If something later should take its address, we can always give
6482 it legitimate RTL at that time. */
6483 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
6484 store_expr (DECL_INITIAL (decl), DECL_RTL (decl), 0);
6485 TREE_ASM_WRITTEN (decl) = 1;
6487 else if (toplev && ! TREE_PUBLIC (decl))
6489 /* If this is a static const, change its apparent linkage
6490 if it belongs to a #pragma interface. */
6491 if (!interface_unknown)
6493 TREE_PUBLIC (decl) = 1;
6494 DECL_EXTERNAL (decl) = interface_only;
6496 make_decl_rtl (decl, asmspec, toplev);
6499 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6501 else if (TREE_CODE (decl) == VAR_DECL
6502 && DECL_LANG_SPECIFIC (decl)
6503 && DECL_IN_AGGR_P (decl))
6505 if (TREE_STATIC (decl))
6507 if (init == NULL_TREE
6508 #ifdef DEFAULT_STATIC_DEFS
6509 /* If this code is dead, then users must
6510 explicitly declare static member variables
6511 outside the class def'n as well. */
6512 && TYPE_NEEDS_CONSTRUCTING (type)
6516 DECL_EXTERNAL (decl) = 1;
6517 make_decl_rtl (decl, asmspec, 1);
6520 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6523 /* Just a constant field. Should not need any rtl. */
6527 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6530 resume_temporary_allocation ();
6532 if (type != error_mark_node
6533 && TYPE_LANG_SPECIFIC (type)
6534 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
6535 abstract_virtuals_error (decl, type);
6536 else if ((TREE_CODE (type) == FUNCTION_TYPE
6537 || TREE_CODE (type) == METHOD_TYPE)
6538 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
6539 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type)))
6540 abstract_virtuals_error (decl, TREE_TYPE (type));
6542 if (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE (type))
6543 signature_error (decl, type);
6544 else if ((TREE_CODE (type) == FUNCTION_TYPE
6545 || TREE_CODE (type) == METHOD_TYPE)
6546 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
6547 && IS_SIGNATURE (TREE_TYPE (type)))
6548 signature_error (decl, TREE_TYPE (type));
6550 if (TREE_CODE (decl) == FUNCTION_DECL)
6552 else if (DECL_EXTERNAL (decl)
6553 && ! (DECL_LANG_SPECIFIC (decl)
6554 && DECL_NOT_REALLY_EXTERN (decl)))
6557 DECL_INITIAL (decl) = init;
6559 else if (TREE_STATIC (decl) && type != error_mark_node)
6561 /* Cleanups for static variables are handled by `finish_file'. */
6562 if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE
6563 || TYPE_NEEDS_DESTRUCTOR (type))
6564 expand_static_init (decl, init);
6568 extern int temp_slot_level;
6569 extern int target_temp_slot_level;
6570 tree old_cleanups = cleanups_this_call;
6571 int old_temp_level = target_temp_slot_level;
6573 /* This is a declared decl which must live until the
6574 end of the binding contour. It may need a cleanup. */
6576 /* Recompute the RTL of a local array now
6577 if it used to be an incomplete type. */
6578 if (was_incomplete && ! TREE_STATIC (decl))
6580 /* If we used it already as memory, it must stay in memory. */
6581 TREE_ADDRESSABLE (decl) = TREE_USED (decl);
6582 /* If it's still incomplete now, no init will save it. */
6583 if (DECL_SIZE (decl) == NULL_TREE)
6584 DECL_INITIAL (decl) = NULL_TREE;
6587 else if (! TREE_ASM_WRITTEN (decl)
6588 && (TYPE_SIZE (type) != NULL_TREE
6589 || TREE_CODE (type) == ARRAY_TYPE))
6591 /* Do this here, because we did not expand this decl's
6592 rtl in start_decl. */
6593 if (DECL_RTL (decl) == NULL_RTX)
6597 /* XXX: Why don't we use decl here? */
6598 /* Ans: Because it was already expanded? */
6599 if (! expand_decl_cleanup (NULL_TREE, cleanup))
6600 cp_error ("parser lost in parsing declaration of `%D'",
6602 /* Cleanup used up here. */
6603 cleanup = NULL_TREE;
6607 if (current_binding_level->is_for_scope)
6609 struct binding_level *outer = current_binding_level->level_chain;
6611 /* Check to see if the same name is already bound at
6612 the outer level, either because it was directly declared,
6613 or because a dead for-decl got preserved. In either case,
6614 the code would not have been valid under the ARM
6615 scope rules, so clear is_for_scope for the
6616 current_binding_level.
6618 Otherwise, we need to preserve the temp slot for decl
6619 to last into the outer binding level. */
6621 int handling_dead_for_vars = 0;
6622 tree link = outer->names;
6623 for (; ; link = TREE_CHAIN (link))
6625 if (link == NULL && handling_dead_for_vars == 0)
6627 link = outer->dead_vars_from_for;
6628 handling_dead_for_vars = 1;
6632 if (DECL_IN_MEMORY_P (decl))
6633 preserve_temp_slots (DECL_RTL (decl));
6636 if (DECL_NAME (link) == DECL_NAME (decl))
6638 if (handling_dead_for_vars)
6641 = purpose_member (DECL_NAME (decl),
6642 current_binding_level->shadowed);
6643 if (shadowing && TREE_VALUE (shadowing) == link)
6644 TREE_VALUE (shadowing)
6645 = DECL_SHADOWED_FOR_VAR (link);
6647 current_binding_level->is_for_scope = 0;
6655 target_temp_slot_level = temp_slot_level;
6657 if (DECL_SIZE (decl) && type != error_mark_node)
6659 /* Compute and store the initial value. */
6660 expand_decl_init (decl);
6662 if (init || TYPE_NEEDS_CONSTRUCTING (type))
6664 emit_line_note (DECL_SOURCE_FILE (decl),
6665 DECL_SOURCE_LINE (decl));
6666 expand_aggr_init (decl, init, 0, flags);
6669 /* Set this to 0 so we can tell whether an aggregate which
6670 was initialized was ever used. Don't do this if it has a
6671 destructor, so we don't complain about the 'resource
6672 allocation is initialization' idiom. */
6673 if (TYPE_NEEDS_CONSTRUCTING (type)
6674 && cleanup == NULL_TREE
6675 && DECL_NAME (decl))
6676 TREE_USED (decl) = 0;
6678 /* Cleanup any temporaries needed for the initial value. */
6679 expand_cleanups_to (old_cleanups);
6682 target_temp_slot_level = old_temp_level;
6684 if (DECL_SIZE (decl) && type != error_mark_node)
6686 /* Store the cleanup, if there was one. */
6689 if (! expand_decl_cleanup (decl, cleanup))
6690 cp_error ("parser lost in parsing declaration of `%D'",
6697 /* Undo call to `pushclass' that was done in `start_decl'
6698 due to initialization of qualified member variable.
6699 I.e., Foo::x = 10; */
6701 tree context = DECL_REAL_CONTEXT (decl);
6703 && TREE_CODE_CLASS (TREE_CODE (context)) == 't'
6704 && (TREE_CODE (decl) == VAR_DECL
6705 /* We also have a pushclass done that we need to undo here
6706 if we're at top level and declare a method. */
6707 || TREE_CODE (decl) == FUNCTION_DECL)
6708 /* If size hasn't been set, we're still defining it,
6709 and therefore inside the class body; don't pop
6710 the binding level.. */
6711 && TYPE_SIZE (context) != NULL_TREE
6712 && context == current_class_type)
6719 /* If requested, warn about definitions of large data objects. */
6721 if (warn_larger_than
6722 && ! processing_template_decl
6723 && (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL)
6724 && !DECL_EXTERNAL (decl))
6726 register tree decl_size = DECL_SIZE (decl);
6728 if (decl_size && TREE_CODE (decl_size) == INTEGER_CST)
6730 unsigned units = TREE_INT_CST_LOW (decl_size) / BITS_PER_UNIT;
6732 if (units > larger_than_size)
6733 warning_with_decl (decl, "size of `%s' is %u bytes", units);
6739 /* Resume permanent allocation, if not within a function. */
6740 /* The corresponding push_obstacks_nochange is in start_decl,
6741 start_method, groktypename, and in grokfield. */
6746 TREE_READONLY (decl) = 1;
6749 /* This is here for a midend callback from c-common.c */
6752 finish_decl (decl, init, asmspec_tree)
6756 cp_finish_decl (decl, init, asmspec_tree, 1, 0);
6760 expand_static_init (decl, init)
6764 tree oldstatic = value_member (decl, static_aggregates);
6768 if (TREE_PURPOSE (oldstatic) && init != NULL_TREE)
6769 cp_error ("multiple initializations given for `%D'", decl);
6771 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
6773 /* Emit code to perform this initialization but once. */
6776 extern int temp_slot_level;
6777 extern int target_temp_slot_level;
6781 /* Remember this information until end of file. */
6782 push_obstacks (&permanent_obstack, &permanent_obstack);
6784 /* Emit code to perform this initialization but once. */
6785 temp = get_temp_name (integer_type_node, 1);
6786 rest_of_decl_compilation (temp, NULL_PTR, 0, 0);
6787 expand_start_cond (build_binary_op (EQ_EXPR, temp,
6788 integer_zero_node, 1), 0);
6789 old_cleanups = cleanups_this_call;
6790 old_temp_level = target_temp_slot_level;
6793 target_temp_slot_level = temp_slot_level;
6795 expand_assignment (temp, integer_one_node, 0, 0);
6796 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))
6797 || (init && TREE_CODE (init) == TREE_LIST))
6799 expand_aggr_init (decl, init, 0, 0);
6800 do_pending_stack_adjust ();
6803 expand_assignment (decl, init, 0, 0);
6805 /* Cleanup any temporaries needed for the initial value. */
6806 expand_cleanups_to (old_cleanups);
6809 target_temp_slot_level = old_temp_level;
6811 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
6813 tree cleanup, fcall;
6814 static tree Atexit = 0;
6817 tree atexit_fndecl, PFV, pfvlist;
6818 /* Remember this information until end of file. */
6819 push_obstacks (&permanent_obstack, &permanent_obstack);
6820 PFV = build_pointer_type (build_function_type
6821 (void_type_node, void_list_node));
6823 pfvlist = tree_cons (NULL_TREE, PFV, void_list_node);
6825 push_lang_context (lang_name_c);
6827 builtin_function ("atexit",
6828 build_function_type (void_type_node,
6830 NOT_BUILT_IN, NULL_PTR);
6831 assemble_external (atexit_fndecl);
6832 Atexit = default_conversion (atexit_fndecl);
6833 pop_lang_context ();
6837 cleanup = start_anon_func ();
6838 expand_expr_stmt (build_cleanup (decl));
6840 mark_addressable (cleanup);
6841 cleanup = build_unary_op (ADDR_EXPR, cleanup, 0);
6842 fcall = build_function_call (Atexit, tree_cons (NULL_TREE, cleanup, NULL_TREE));
6843 expand_expr_stmt (fcall);
6847 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
6849 static_aggregates = perm_tree_cons (temp, decl, static_aggregates);
6850 TREE_STATIC (static_aggregates) = 1;
6853 /* Resume old (possibly temporary) allocation. */
6858 /* This code takes into account memory allocation
6859 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
6860 does not hold for this object, then we must make permanent
6861 the storage currently in the temporary obstack. */
6862 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))
6863 preserve_initializer ();
6864 static_aggregates = perm_tree_cons (init, decl, static_aggregates);
6868 /* Make TYPE a complete type based on INITIAL_VALUE.
6869 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
6870 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
6873 complete_array_type (type, initial_value, do_default)
6874 tree type, initial_value;
6877 register tree maxindex = NULL_TREE;
6882 /* Note MAXINDEX is really the maximum index,
6883 one less than the size. */
6884 if (TREE_CODE (initial_value) == STRING_CST)
6887 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
6888 maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
6891 else if (TREE_CODE (initial_value) == CONSTRUCTOR)
6893 tree elts = CONSTRUCTOR_ELTS (initial_value);
6894 maxindex = size_binop (MINUS_EXPR, integer_zero_node, size_one_node);
6895 for (; elts; elts = TREE_CHAIN (elts))
6897 if (TREE_PURPOSE (elts))
6898 maxindex = TREE_PURPOSE (elts);
6900 maxindex = size_binop (PLUS_EXPR, maxindex, size_one_node);
6902 maxindex = copy_node (maxindex);
6906 /* Make an error message unless that happened already. */
6907 if (initial_value != error_mark_node)
6910 /* Prevent further error messages. */
6911 maxindex = build_int_2 (0, 0);
6918 maxindex = build_int_2 (0, 0);
6926 TYPE_DOMAIN (type) = build_index_type (maxindex);
6927 if (! TREE_TYPE (maxindex))
6928 TREE_TYPE (maxindex) = TYPE_DOMAIN (type);
6930 itype = TREE_TYPE (initial_value);
6933 if (itype && !TYPE_DOMAIN (itype))
6934 TYPE_DOMAIN (itype) = TYPE_DOMAIN (type);
6935 /* The type of the main variant should never be used for arrays
6936 of different sizes. It should only ever be completed with the
6937 size of the array. */
6938 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)))
6939 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = TYPE_DOMAIN (type);
6942 /* Lay out the type now that we can get the real answer. */
6949 /* Return zero if something is declared to be a member of type
6950 CTYPE when in the context of CUR_TYPE. STRING is the error
6951 message to print in that case. Otherwise, quietly return 1. */
6954 member_function_or_else (ctype, cur_type, string)
6955 tree ctype, cur_type;
6958 if (ctype && ctype != cur_type)
6960 error (string, TYPE_NAME_STRING (ctype));
6966 /* Subroutine of `grokdeclarator'. */
6968 /* Generate errors possibly applicable for a given set of specifiers.
6969 This is for ARM $7.1.2. */
6972 bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises)
6975 int virtualp, quals, friendp, raises, inlinep;
6978 cp_error ("`%D' declared as a `virtual' %s", object, type);
6980 cp_error ("`%D' declared as an `inline' %s", object, type);
6982 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
6985 cp_error_at ("invalid friend declaration", object);
6987 cp_error_at ("invalid exception specifications", object);
6990 /* CTYPE is class type, or null if non-class.
6991 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
6993 DECLARATOR is the function's name.
6994 VIRTUALP is truthvalue of whether the function is virtual or not.
6995 FLAGS are to be passed through to `grokclassfn'.
6996 QUALS are qualifiers indicating whether the function is `const'
6998 RAISES is a list of exceptions that this function can raise.
6999 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7000 not look, and -1 if we should not call `grokclassfn' at all. */
7003 grokfndecl (ctype, type, declarator, virtualp, flags, quals,
7004 raises, attrlist, check, publicp, inlinep, funcdef_flag)
7008 enum overload_flags flags;
7009 tree quals, raises, attrlist;
7010 int check, publicp, inlinep, funcdef_flag;
7013 int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
7016 cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL
7017 ? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype);
7023 type = build_exception_variant (type, raises);
7026 decl = build_lang_decl (FUNCTION_DECL, declarator, type);
7027 /* propagate volatile out from type to decl */
7028 if (TYPE_VOLATILE (type))
7029 TREE_THIS_VOLATILE (decl) = 1;
7031 /* Should probably propagate const out from type to decl I bet (mrs). */
7034 DECL_STATIC_FUNCTION_P (decl) = 1;
7035 DECL_CONTEXT (decl) = ctype;
7039 DECL_CLASS_CONTEXT (decl) = ctype;
7041 /* All function decls start out public; we'll fix their linkage later (at
7042 definition or EOF) if appropriate. */
7043 TREE_PUBLIC (decl) = 1;
7045 if (ctype == NULL_TREE && ! strcmp (IDENTIFIER_POINTER (declarator), "main"))
7048 error ("cannot declare `main' to be inline");
7050 error ("cannot declare `main' to be static");
7056 DECL_C_STATIC (decl) = 1;
7059 DECL_THIS_INLINE (decl) = DECL_INLINE (decl) = 1;
7061 DECL_EXTERNAL (decl) = 1;
7062 if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE)
7064 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7065 (ctype ? "static " : "non-"), decl, TREE_VALUE (quals));
7069 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl)))
7070 grok_op_properties (decl, virtualp, check < 0);
7072 if (ctype && hack_decl_function_context (decl))
7073 DECL_NO_STATIC_CHAIN (decl) = 1;
7075 /* Caller will do the rest of this. */
7079 if (check && funcdef_flag)
7080 DECL_INITIAL (decl) = error_mark_node;
7082 if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator)
7085 /* Just handle constructors here. We could do this
7086 inside the following if stmt, but I think
7087 that the code is more legible by breaking this
7088 case out. See comments below for what each of
7089 the following calls is supposed to do. */
7090 DECL_CONSTRUCTOR_P (decl) = 1;
7092 grokclassfn (ctype, declarator, decl, flags, quals);
7095 tmp = check_classfn (ctype, decl);
7096 if (tmp && DECL_ARTIFICIAL (tmp))
7097 cp_error ("definition of implicitly-declared `%D'", tmp);
7098 if (tmp && duplicate_decls (decl, tmp))
7101 if (! grok_ctor_properties (ctype, decl))
7104 if (check == 0 && ! current_function_decl)
7106 /* FIXME: this should only need to look at
7107 IDENTIFIER_GLOBAL_VALUE. */
7108 tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0);
7109 if (tmp == NULL_TREE)
7110 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl;
7111 else if (TREE_CODE (tmp) != TREE_CODE (decl))
7112 cp_error ("inconsistent declarations for `%D'", decl);
7115 duplicate_decls (decl, tmp);
7117 /* avoid creating circularities. */
7118 DECL_CHAIN (decl) = NULL_TREE;
7120 make_decl_rtl (decl, NULL_PTR, 1);
7127 /* Function gets the ugly name, field gets the nice one.
7128 This call may change the type of the function (because
7129 of default parameters)! */
7130 if (ctype != NULL_TREE)
7131 grokclassfn (ctype, cname, decl, flags, quals);
7133 if (ctype != NULL_TREE && check)
7135 tmp = check_classfn (ctype, decl);
7136 if (tmp && DECL_STATIC_FUNCTION_P (tmp)
7137 && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
7139 /* Remove the `this' parm added by grokclassfn.
7140 XXX Isn't this done in start_function, too? */
7141 revert_static_member_fn (&decl, NULL, NULL);
7142 last_function_parms = TREE_CHAIN (last_function_parms);
7144 if (tmp && DECL_ARTIFICIAL (tmp))
7145 cp_error ("definition of implicitly-declared `%D'", tmp);
7146 if (tmp && duplicate_decls (decl, tmp))
7150 if (ctype == NULL_TREE || check)
7153 /* Now install the declaration of this function so that others may
7154 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
7156 if (! current_function_decl)
7158 /* FIXME: this should only need to look at
7159 IDENTIFIER_GLOBAL_VALUE. */
7160 tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0);
7161 if (tmp == NULL_TREE)
7162 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl;
7163 else if (TREE_CODE (tmp) != TREE_CODE (decl))
7164 cp_error ("inconsistent declarations for `%D'", decl);
7167 duplicate_decls (decl, tmp);
7169 /* avoid creating circularities. */
7170 DECL_CHAIN (decl) = NULL_TREE;
7174 cplus_decl_attributes (decl, TREE_PURPOSE (attrlist),
7175 TREE_VALUE (attrlist));
7176 make_decl_rtl (decl, NULL_PTR, 1);
7180 DECL_VIRTUAL_P (decl) = 1;
7181 if (DECL_VINDEX (decl) == NULL_TREE)
7182 DECL_VINDEX (decl) = error_mark_node;
7183 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl)) = 1;
7190 grokvardecl (type, declarator, specbits_in, initialized, constp)
7193 RID_BIT_TYPE *specbits_in;
7198 RID_BIT_TYPE specbits;
7200 specbits = *specbits_in;
7202 if (TREE_CODE (type) == OFFSET_TYPE)
7204 /* If you declare a static member so that it
7205 can be initialized, the code will reach here. */
7206 tree basetype = TYPE_OFFSET_BASETYPE (type);
7207 type = TREE_TYPE (type);
7208 decl = build_lang_field_decl (VAR_DECL, declarator, type);
7209 DECL_CONTEXT (decl) = basetype;
7210 DECL_CLASS_CONTEXT (decl) = basetype;
7211 DECL_ASSEMBLER_NAME (decl) = build_static_name (basetype, declarator);
7214 decl = build_decl (VAR_DECL, declarator, complete_type (type));
7216 DECL_ASSEMBLER_NAME (decl) = current_namespace_id (DECL_ASSEMBLER_NAME (decl));
7218 if (RIDBIT_SETP (RID_EXTERN, specbits))
7220 DECL_THIS_EXTERN (decl) = 1;
7221 DECL_EXTERNAL (decl) = !initialized;
7224 /* In class context, static means one per class,
7225 public access, and static storage. */
7226 if (DECL_FIELD_CONTEXT (decl) != NULL_TREE
7227 && IS_AGGR_TYPE (DECL_FIELD_CONTEXT (decl)))
7229 TREE_PUBLIC (decl) = 1;
7230 TREE_STATIC (decl) = 1;
7231 DECL_EXTERNAL (decl) = 0;
7233 /* At top level, either `static' or no s.c. makes a definition
7234 (perhaps tentative), and absence of `static' makes it public. */
7235 else if (toplevel_bindings_p ())
7237 TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits)
7238 && (DECL_THIS_EXTERN (decl) || ! constp));
7239 TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
7241 /* Not at top level, only `static' makes a static definition. */
7244 TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits);
7245 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
7250 /* Create a canonical pointer to member function type. */
7253 build_ptrmemfunc_type (type)
7260 /* If a canonical type already exists for this type, use it. We use
7261 this method instead of type_hash_canon, because it only does a
7262 simple equality check on the list of field members. */
7264 if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
7267 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
7269 u = make_lang_type (UNION_TYPE);
7270 IS_AGGR_TYPE (u) = 0;
7271 fields[0] = build_lang_field_decl (FIELD_DECL, pfn_identifier, type);
7272 fields[1] = build_lang_field_decl (FIELD_DECL, delta2_identifier,
7274 finish_builtin_type (u, "__ptrmemfunc_type", fields, 1, ptr_type_node);
7275 TYPE_NAME (u) = NULL_TREE;
7277 t = make_lang_type (RECORD_TYPE);
7279 /* Let the front-end know this is a pointer to member function. */
7280 TYPE_PTRMEMFUNC_FLAG (t) = 1;
7281 /* and not really an aggregate. */
7282 IS_AGGR_TYPE (t) = 0;
7284 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
7286 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
7288 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_or_delta2_identifier, u);
7289 finish_builtin_type (t, "__ptrmemfunc_type", fields, 2, ptr_type_node);
7293 /* Zap out the name so that the back-end will give us the debugging
7294 information for this anonymous RECORD_TYPE. */
7295 TYPE_NAME (t) = NULL_TREE;
7297 TYPE_SET_PTRMEMFUNC_TYPE (type, t);
7299 /* Seems to be wanted. */
7300 CLASSTYPE_GOT_SEMICOLON (t) = 1;
7304 /* Given declspecs and a declarator,
7305 determine the name and type of the object declared
7306 and construct a ..._DECL node for it.
7307 (In one case we can return a ..._TYPE node instead.
7308 For invalid input we sometimes return 0.)
7310 DECLSPECS is a chain of tree_list nodes whose value fields
7311 are the storage classes and type specifiers.
7313 DECL_CONTEXT says which syntactic context this declaration is in:
7314 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
7315 FUNCDEF for a function definition. Like NORMAL but a few different
7316 error messages in each case. Return value may be zero meaning
7317 this definition is too screwy to try to parse.
7318 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
7319 handle member functions (which have FIELD context).
7320 Return value may be zero meaning this definition is too screwy to
7322 PARM for a parameter declaration (either within a function prototype
7323 or before a function body). Make a PARM_DECL, or return void_type_node.
7324 CATCHPARM for a parameter declaration before a catch clause.
7325 TYPENAME if for a typename (in a cast or sizeof).
7326 Don't make a DECL node; just return the ..._TYPE node.
7327 FIELD for a struct or union field; make a FIELD_DECL.
7328 BITFIELD for a field with specified width.
7329 INITIALIZED is 1 if the decl has an initializer.
7331 In the TYPENAME case, DECLARATOR is really an absolute declarator.
7332 It may also be so in the PARM case, for a prototype where the
7333 argument type is specified but not the name.
7335 This function is where the complicated C meanings of `static'
7336 and `extern' are interpreted.
7338 For C++, if there is any monkey business to do, the function which
7339 calls this one must do it, i.e., prepending instance variables,
7340 renaming overloaded function names, etc.
7342 Note that for this C++, it is an error to define a method within a class
7343 which does not belong to that class.
7345 Except in the case where SCOPE_REFs are implicitly known (such as
7346 methods within a class being redundantly qualified),
7347 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
7348 (class_name::decl_name). The caller must also deal with this.
7350 If a constructor or destructor is seen, and the context is FIELD,
7351 then the type gains the attribute TREE_HAS_x. If such a declaration
7352 is erroneous, NULL_TREE is returned.
7354 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
7355 function, these are the qualifiers to give to the `this' pointer.
7357 May return void_type_node if the declarator turned out to be a friend.
7358 See grokfield for details. */
7360 enum return_types { return_normal, return_ctor, return_dtor, return_conversion };
7363 grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
7366 enum decl_context decl_context;
7370 RID_BIT_TYPE specbits;
7373 tree type = NULL_TREE;
7377 int virtualp, explicitp, friendp, inlinep, staticp;
7378 int explicit_int = 0;
7379 int explicit_char = 0;
7380 int opaque_typedef = 0;
7381 tree typedef_decl = NULL_TREE;
7383 tree typedef_type = NULL_TREE;
7384 int funcdef_flag = 0;
7385 enum tree_code innermost_code = ERROR_MARK;
7388 /* See the code below that used this. */
7389 tree decl_machine_attr = NULL_TREE;
7391 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
7392 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
7393 tree init = NULL_TREE;
7395 /* Keep track of what sort of function is being processed
7396 so that we can warn about default return values, or explicit
7397 return values which do not match prescribed defaults. */
7398 enum return_types return_type = return_normal;
7400 tree dname = NULL_TREE;
7401 tree ctype = current_class_type;
7402 tree ctor_return_type = NULL_TREE;
7403 enum overload_flags flags = NO_SPECIAL;
7404 tree quals = NULL_TREE;
7405 tree raises = NULL_TREE;
7407 RIDBIT_RESET_ALL (specbits);
7408 if (decl_context == FUNCDEF)
7409 funcdef_flag = 1, decl_context = NORMAL;
7410 else if (decl_context == MEMFUNCDEF)
7411 funcdef_flag = -1, decl_context = FIELD;
7412 else if (decl_context == BITFIELD)
7413 bitfield = 1, decl_context = FIELD;
7415 /* Look inside a declarator for the name being declared
7416 and get it as a string, for an error message. */
7418 tree *next = &declarator;
7422 while (next && *next)
7425 switch (TREE_CODE (decl))
7429 next = &TREE_OPERAND (decl, 0);
7432 case BIT_NOT_EXPR: /* for C++ destructors! */
7434 tree name = TREE_OPERAND (decl, 0);
7435 tree rename = NULL_TREE;
7437 my_friendly_assert (flags == NO_SPECIAL, 152);
7439 return_type = return_dtor;
7440 if (TREE_CODE (name) == TYPE_DECL)
7441 TREE_OPERAND (decl, 0) = name = constructor_name (name);
7442 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153);
7443 if (ctype == NULL_TREE)
7445 if (current_class_type == NULL_TREE)
7447 error ("destructors must be member functions");
7452 tree t = constructor_name (current_class_name);
7459 tree t = constructor_name (ctype);
7466 cp_error ("destructor `%T' must match class name `%T'",
7468 TREE_OPERAND (decl, 0) = rename;
7474 case ADDR_EXPR: /* C++ reference declaration */
7479 innermost_code = TREE_CODE (decl);
7480 next = &TREE_OPERAND (decl, 0);
7484 if (parmlist_is_exprlist (TREE_OPERAND (decl, 1)))
7486 /* This is actually a variable declaration using constructor
7487 syntax. We need to call start_decl and cp_finish_decl so we
7488 can get the variable initialized... */
7490 *next = TREE_OPERAND (decl, 0);
7491 init = TREE_OPERAND (decl, 1);
7493 decl = start_decl (declarator, declspecs, 1);
7494 finish_decl (decl, init, NULL_TREE);
7497 innermost_code = TREE_CODE (decl);
7498 if (decl_context == FIELD && ctype == NULL_TREE)
7499 ctype = current_class_type;
7501 && TREE_OPERAND (decl, 0)
7502 && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL
7503 && ((DECL_NAME (TREE_OPERAND (decl, 0))
7504 == constructor_name_full (ctype))
7505 || (DECL_NAME (TREE_OPERAND (decl, 0))
7506 == constructor_name (ctype)))))
7507 TREE_OPERAND (decl, 0) = constructor_name (ctype);
7508 next = &TREE_OPERAND (decl, 0);
7510 if (ctype != NULL_TREE
7511 && decl != NULL_TREE && flags != DTOR_FLAG
7512 && decl == constructor_name (ctype))
7514 return_type = return_ctor;
7515 ctor_return_type = ctype;
7520 case IDENTIFIER_NODE:
7526 cp_error ("declarator-id missing; using reserved word `%D'",
7528 name = IDENTIFIER_POINTER (dname);
7530 if (! IDENTIFIER_OPNAME_P (dname)
7531 /* Linux headers use '__op'. Arrgh. */
7532 || IDENTIFIER_TYPENAME_P (dname) && ! TREE_TYPE (dname))
7533 name = IDENTIFIER_POINTER (dname);
7536 if (IDENTIFIER_TYPENAME_P (dname))
7538 my_friendly_assert (flags == NO_SPECIAL, 154);
7539 flags = TYPENAME_FLAG;
7540 ctor_return_type = TREE_TYPE (dname);
7541 return_type = return_conversion;
7543 name = operator_name_string (dname);
7550 /* Perform error checking, and decide on a ctype. */
7551 tree cname = TREE_OPERAND (decl, 0);
7552 if (cname == NULL_TREE)
7554 else if (! is_aggr_type (cname, 1))
7555 TREE_OPERAND (decl, 0) = NULL_TREE;
7556 /* Must test TREE_OPERAND (decl, 1), in case user gives
7557 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
7558 else if (TREE_OPERAND (decl, 1)
7559 && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)
7561 else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM)
7563 cp_error ("`%T::%D' is not a valid declarator", cname,
7564 TREE_OPERAND (decl, 1));
7565 cp_error (" perhaps you want `typename %T::%D' to make it a type",
7566 cname, TREE_OPERAND (decl, 1));
7567 return void_type_node;
7569 else if (ctype == NULL_TREE)
7571 else if (TREE_COMPLEXITY (decl) == current_class_depth)
7572 TREE_OPERAND (decl, 0) = ctype;
7575 if (! UNIQUELY_DERIVED_FROM_P (cname, ctype))
7577 cp_error ("type `%T' is not derived from type `%T'",
7579 TREE_OPERAND (decl, 0) = NULL_TREE;
7585 if (ctype && TREE_CODE (TREE_OPERAND (decl, 1)) == TYPE_DECL
7586 && ((DECL_NAME (TREE_OPERAND (decl, 1))
7587 == constructor_name_full (ctype))
7588 || (DECL_NAME (TREE_OPERAND (decl, 1))
7589 == constructor_name (ctype))))
7590 TREE_OPERAND (decl, 1) = constructor_name (ctype);
7591 next = &TREE_OPERAND (decl, 1);
7595 if (TREE_CODE (decl) == IDENTIFIER_NODE
7596 && constructor_name (ctype) == decl)
7598 return_type = return_ctor;
7599 ctor_return_type = ctype;
7601 else if (TREE_CODE (decl) == BIT_NOT_EXPR
7602 && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE
7603 && (constructor_name (ctype) == TREE_OPERAND (decl, 0)
7604 || constructor_name_full (ctype) == TREE_OPERAND (decl, 0)))
7606 return_type = return_dtor;
7607 ctor_return_type = ctype;
7609 TREE_OPERAND (decl, 0) = constructor_name (ctype);
7610 next = &TREE_OPERAND (decl, 0);
7621 /* Parse error puts this typespec where
7622 a declarator should go. */
7623 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl));
7624 if (TREE_TYPE (decl) == current_class_type)
7625 cp_error (" perhaps you want `%T' for a constructor",
7626 current_class_name);
7627 dname = DECL_NAME (decl);
7628 name = IDENTIFIER_POINTER (dname);
7630 /* Avoid giving two errors for this. */
7631 IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE;
7633 declspecs = temp_tree_cons (NULL_TREE, integer_type_node,
7640 cp_compiler_error ("`%D' as declarator", decl);
7641 return 0; /* We used to do a 155 abort here. */
7648 /* A function definition's declarator must have the form of
7649 a function declarator. */
7651 if (funcdef_flag && innermost_code != CALL_EXPR)
7654 if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
7655 && innermost_code != CALL_EXPR
7656 && ! (ctype && declspecs == NULL_TREE))
7658 cp_error ("declaration of `%D' as non-function", dname);
7659 return void_type_node;
7662 /* Anything declared one level down from the top level
7663 must be one of the parameters of a function
7664 (because the body is at least two levels down). */
7666 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
7667 by not allowing C++ class definitions to specify their parameters
7668 with xdecls (must be spec.d in the parmlist).
7670 Since we now wait to push a class scope until we are sure that
7671 we are in a legitimate method context, we must set oldcname
7672 explicitly (since current_class_name is not yet alive).
7674 We also want to avoid calling this a PARM if it is in a namespace. */
7676 if (decl_context == NORMAL && ! namespace_bindings_p ()
7677 && ! pseudo_global_level_p ())
7679 struct binding_level *b = current_binding_level;
7680 current_binding_level = b->level_chain;
7681 if (current_binding_level != 0 && toplevel_bindings_p ())
7682 decl_context = PARM;
7683 current_binding_level = b;
7686 /* Look through the decl specs and record which ones appear.
7687 Some typespecs are defined as built-in typenames.
7688 Others, the ones that are modifiers of other types,
7689 are represented by bits in SPECBITS: set the bits for
7690 the modifiers that appear. Storage class keywords are also in SPECBITS.
7692 If there is a typedef name or a type, store the type in TYPE.
7693 This includes builtin typedefs such as `int'.
7695 Set EXPLICIT_INT if the type is `int' or `char' and did not
7696 come from a user typedef.
7698 Set LONGLONG if `long' is mentioned twice.
7700 For C++, constructors and destructors have their own fast treatment. */
7702 for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
7707 /* Certain parse errors slip through. For example,
7708 `int class;' is not caught by the parser. Try
7709 weakly to recover here. */
7710 if (TREE_CODE (spec) != TREE_LIST)
7713 id = TREE_VALUE (spec);
7715 if (TREE_CODE (id) == IDENTIFIER_NODE)
7717 if (id == ridpointers[(int) RID_INT]
7718 || id == ridpointers[(int) RID_CHAR]
7719 || id == ridpointers[(int) RID_BOOL]
7720 || id == ridpointers[(int) RID_WCHAR])
7724 if (id == ridpointers[(int) RID_BOOL])
7725 error ("`bool' is now a keyword");
7727 cp_error ("extraneous `%T' ignored", id);
7731 if (id == ridpointers[(int) RID_INT])
7733 else if (id == ridpointers[(int) RID_CHAR])
7735 type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id));
7739 /* C++ aggregate types. */
7740 if (IDENTIFIER_HAS_TYPE_VALUE (id))
7743 cp_error ("multiple declarations `%T' and `%T'", type, id);
7745 type = IDENTIFIER_TYPE_VALUE (id);
7749 for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++)
7751 if (ridpointers[i] == id)
7753 if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits))
7755 if (pedantic && ! in_system_header)
7756 pedwarn ("ANSI C++ does not support `long long'");
7758 error ("`long long long' is too long for GCC");
7762 else if (RIDBIT_SETP (i, specbits))
7763 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id));
7764 RIDBIT_SET (i, specbits);
7769 /* C++ aggregate types. */
7770 else if (TREE_CODE (id) == TYPE_DECL)
7773 cp_error ("multiple declarations `%T' and `%T'", type,
7777 type = TREE_TYPE (id);
7778 TREE_VALUE (spec) = type;
7783 error ("two or more data types in declaration of `%s'", name);
7784 else if (TREE_CODE (id) == IDENTIFIER_NODE)
7786 register tree t = lookup_name (id, 1);
7787 if (!t || TREE_CODE (t) != TYPE_DECL)
7788 error ("`%s' fails to be a typedef or built in type",
7789 IDENTIFIER_POINTER (id));
7792 type = TREE_TYPE (t);
7794 /* See the code below that used this. */
7795 decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id);
7800 else if (TREE_CODE (id) != ERROR_MARK)
7801 /* Can't change CLASS nodes into RECORD nodes here! */
7807 typedef_type = type;
7809 /* No type at all: default to `int', and set EXPLICIT_INT
7810 because it was not a user-defined typedef.
7811 Except when we have a `typedef' inside a signature, in
7812 which case the type defaults to `unknown type' and is
7813 instantiated when assigning to a signature pointer or ref. */
7815 if (type == NULL_TREE
7816 && (RIDBIT_SETP (RID_SIGNED, specbits)
7817 || RIDBIT_SETP (RID_UNSIGNED, specbits)
7818 || RIDBIT_SETP (RID_LONG, specbits)
7819 || RIDBIT_SETP (RID_SHORT, specbits)))
7821 /* These imply 'int'. */
7822 type = integer_type_node;
7826 if (type == NULL_TREE)
7829 if (return_type == return_dtor)
7830 type = void_type_node;
7831 else if (return_type == return_ctor)
7832 type = build_pointer_type (ctor_return_type);
7833 else if (return_type == return_conversion)
7834 type = ctor_return_type;
7835 else if (current_class_type
7836 && IS_SIGNATURE (current_class_type)
7837 && RIDBIT_SETP (RID_TYPEDEF, specbits)
7838 && (decl_context == FIELD || decl_context == NORMAL))
7842 type = copy_node (opaque_type_node);
7848 if (warn_return_type
7849 && return_type == return_normal)
7850 /* Save warning until we know what is really going on. */
7851 warn_about_return_type = 1;
7853 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
7854 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
7855 else if (declspecs == NULL_TREE &&
7856 (innermost_code != CALL_EXPR || pedantic))
7857 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type or storage class",
7859 type = integer_type_node;
7862 else if (return_type == return_dtor)
7864 error ("return type specification for destructor invalid");
7865 type = void_type_node;
7867 else if (return_type == return_ctor)
7869 error ("return type specification for constructor invalid");
7870 type = build_pointer_type (ctor_return_type);
7872 else if (return_type == return_conversion)
7874 if (comptypes (type, ctor_return_type, 1) == 0)
7875 cp_error ("operator `%T' declared to return `%T'",
7876 ctor_return_type, type);
7878 cp_pedwarn ("return type specified for `operator %T'",
7881 type = ctor_return_type;
7886 /* Now process the modifiers that were specified
7887 and check for invalid combinations. */
7889 /* Long double is a special combination. */
7891 if (RIDBIT_SETP (RID_LONG, specbits)
7892 && TYPE_MAIN_VARIANT (type) == double_type_node)
7894 RIDBIT_RESET (RID_LONG, specbits);
7895 type = build_type_variant (long_double_type_node, TYPE_READONLY (type),
7896 TYPE_VOLATILE (type));
7899 /* Check all other uses of type modifiers. */
7901 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
7902 || RIDBIT_SETP (RID_SIGNED, specbits)
7903 || RIDBIT_SETP (RID_LONG, specbits)
7904 || RIDBIT_SETP (RID_SHORT, specbits))
7908 if (TREE_CODE (type) == REAL_TYPE)
7909 error ("short, signed or unsigned invalid for `%s'", name);
7910 else if (TREE_CODE (type) != INTEGER_TYPE)
7911 error ("long, short, signed or unsigned invalid for `%s'", name);
7912 else if (RIDBIT_SETP (RID_LONG, specbits)
7913 && RIDBIT_SETP (RID_SHORT, specbits))
7914 error ("long and short specified together for `%s'", name);
7915 else if ((RIDBIT_SETP (RID_LONG, specbits)
7916 || RIDBIT_SETP (RID_SHORT, specbits))
7918 error ("long or short specified with char for `%s'", name);
7919 else if ((RIDBIT_SETP (RID_LONG, specbits)
7920 || RIDBIT_SETP (RID_SHORT, specbits))
7921 && TREE_CODE (type) == REAL_TYPE)
7922 error ("long or short specified with floating type for `%s'", name);
7923 else if (RIDBIT_SETP (RID_SIGNED, specbits)
7924 && RIDBIT_SETP (RID_UNSIGNED, specbits))
7925 error ("signed and unsigned given together for `%s'", name);
7929 if (!explicit_int && !explicit_char && pedantic)
7931 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
7933 if (flag_pedantic_errors)
7938 /* Discard the type modifiers if they are invalid. */
7941 RIDBIT_RESET (RID_UNSIGNED, specbits);
7942 RIDBIT_RESET (RID_SIGNED, specbits);
7943 RIDBIT_RESET (RID_LONG, specbits);
7944 RIDBIT_RESET (RID_SHORT, specbits);
7949 /* Decide whether an integer type is signed or not.
7950 Optionally treat bitfields as signed by default. */
7951 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
7952 || (bitfield && ! flag_signed_bitfields
7953 && (explicit_int || explicit_char
7954 /* A typedef for plain `int' without `signed'
7955 can be controlled just like plain `int'. */
7956 || ! (typedef_decl != NULL_TREE
7957 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
7958 && TREE_CODE (type) != ENUMERAL_TYPE
7959 && RIDBIT_NOTSETP (RID_SIGNED, specbits)))
7962 type = long_long_unsigned_type_node;
7963 else if (RIDBIT_SETP (RID_LONG, specbits))
7964 type = long_unsigned_type_node;
7965 else if (RIDBIT_SETP (RID_SHORT, specbits))
7966 type = short_unsigned_type_node;
7967 else if (type == char_type_node)
7968 type = unsigned_char_type_node;
7969 else if (typedef_decl)
7970 type = unsigned_type (type);
7972 type = unsigned_type_node;
7974 else if (RIDBIT_SETP (RID_SIGNED, specbits)
7975 && type == char_type_node)
7976 type = signed_char_type_node;
7978 type = long_long_integer_type_node;
7979 else if (RIDBIT_SETP (RID_LONG, specbits))
7980 type = long_integer_type_node;
7981 else if (RIDBIT_SETP (RID_SHORT, specbits))
7982 type = short_integer_type_node;
7984 /* Set CONSTP if this declaration is `const', whether by
7985 explicit specification or via a typedef.
7986 Likewise for VOLATILEP. */
7988 constp = !! RIDBIT_SETP (RID_CONST, specbits) + TYPE_READONLY (type);
7989 volatilep = !! RIDBIT_SETP (RID_VOLATILE, specbits) + TYPE_VOLATILE (type);
7991 inlinep = !! RIDBIT_SETP (RID_INLINE, specbits);
7992 virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits);
7993 RIDBIT_RESET (RID_VIRTUAL, specbits);
7994 explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0;
7995 RIDBIT_RESET (RID_EXPLICIT, specbits);
7997 if (RIDBIT_SETP (RID_STATIC, specbits))
7998 staticp = 1 + (decl_context == FIELD);
8000 if (virtualp && staticp == 2)
8002 cp_error ("member `%D' cannot be declared both virtual and static",
8006 friendp = RIDBIT_SETP (RID_FRIEND, specbits);
8007 RIDBIT_RESET (RID_FRIEND, specbits);
8009 if (RIDBIT_SETP (RID_MUTABLE, specbits))
8011 if (decl_context == PARM)
8013 error ("non-member `%s' cannot be declared `mutable'", name);
8014 RIDBIT_RESET (RID_MUTABLE, specbits);
8016 else if (friendp || decl_context == TYPENAME)
8018 error ("non-object member `%s' cannot be declared `mutable'", name);
8019 RIDBIT_RESET (RID_MUTABLE, specbits);
8023 /* Warn if two storage classes are given. Default to `auto'. */
8025 if (RIDBIT_ANY_SET (specbits))
8027 if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++;
8028 if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++;
8029 if (decl_context == PARM && nclasses > 0)
8030 error ("storage class specifiers invalid in parameter declarations");
8031 if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8033 if (decl_context == PARM)
8034 error ("typedef declaration invalid in parameter declaration");
8037 if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++;
8038 if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++;
8041 /* Give error if `virtual' is used outside of class declaration. */
8043 && (current_class_name == NULL_TREE || decl_context != FIELD))
8045 error ("virtual outside class declaration");
8048 if (current_class_name == NULL_TREE && RIDBIT_SETP (RID_MUTABLE, specbits))
8050 error ("only members can be declared mutable");
8051 RIDBIT_RESET (RID_MUTABLE, specbits);
8054 /* Static anonymous unions are dealt with here. */
8055 if (staticp && decl_context == TYPENAME
8056 && TREE_CODE (declspecs) == TREE_LIST
8057 && TREE_CODE (TREE_VALUE (declspecs)) == UNION_TYPE
8058 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (TREE_VALUE (declspecs))))
8059 decl_context = FIELD;
8061 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
8062 is used in a signature member function declaration. */
8063 if (decl_context == FIELD
8064 && IS_SIGNATURE (current_class_type)
8065 && RIDBIT_NOTSETP (RID_TYPEDEF, specbits))
8069 error ("`const' specified for signature member function `%s'", name);
8074 error ("`volatile' specified for signature member function `%s'",
8080 error ("`inline' specified for signature member function `%s'", name);
8081 /* Later, we'll make signature member functions inline. */
8086 error ("`friend' declaration in signature definition");
8091 error ("`virtual' specified for signature member function `%s'",
8093 /* Later, we'll make signature member functions virtual. */
8098 /* Warn about storage classes that are invalid for certain
8099 kinds of declarations (parameters, typenames, etc.). */
8102 error ("multiple storage classes in declaration of `%s'", name);
8103 else if (decl_context != NORMAL && nclasses > 0)
8105 if ((decl_context == PARM || decl_context == CATCHPARM)
8106 && (RIDBIT_SETP (RID_REGISTER, specbits)
8107 || RIDBIT_SETP (RID_AUTO, specbits)))
8109 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8111 else if (decl_context == FIELD
8112 && ! IS_SIGNATURE (current_class_type)
8113 /* C++ allows static class elements */
8114 && RIDBIT_SETP (RID_STATIC, specbits))
8115 /* C++ also allows inlines and signed and unsigned elements,
8116 but in those cases we don't come in here. */
8120 if (decl_context == FIELD)
8122 tree tmp = NULL_TREE;
8123 register int op = 0;
8127 /* Avoid trying to get an operand off an identifier node. */
8128 if (TREE_CODE (declarator) == IDENTIFIER_NODE)
8131 tmp = TREE_OPERAND (declarator, 0);
8132 op = IDENTIFIER_OPNAME_P (tmp);
8134 error ("storage class specified for %s `%s'",
8135 IS_SIGNATURE (current_class_type)
8137 ? "signature member operator"
8138 : "signature member function")
8139 : (op ? "member operator" : "field"),
8140 op ? operator_name_string (tmp) : name);
8143 error (((decl_context == PARM || decl_context == CATCHPARM)
8144 ? "storage class specified for parameter `%s'"
8145 : "storage class specified for typename"), name);
8146 RIDBIT_RESET (RID_REGISTER, specbits);
8147 RIDBIT_RESET (RID_AUTO, specbits);
8148 RIDBIT_RESET (RID_EXTERN, specbits);
8150 if (decl_context == FIELD && IS_SIGNATURE (current_class_type))
8152 RIDBIT_RESET (RID_STATIC, specbits);
8157 else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag)
8159 if (toplevel_bindings_p ())
8161 /* It's common practice (and completely valid) to have a const
8162 be initialized and declared extern. */
8164 warning ("`%s' initialized and declared `extern'", name);
8167 error ("`%s' has both `extern' and initializer", name);
8169 else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag
8170 && ! toplevel_bindings_p ())
8171 error ("nested function `%s' declared `extern'", name);
8172 else if (toplevel_bindings_p ())
8174 if (RIDBIT_SETP (RID_AUTO, specbits))
8175 error ("top-level declaration of `%s' specifies `auto'", name);
8178 if (nclasses > 0 && friendp)
8179 error ("storage class specifiers invalid in friend function declarations");
8181 /* Now figure out the structure of the declarator proper.
8182 Descend through it, creating more complex types, until we reach
8183 the declared identifier (or NULL_TREE, in an absolute declarator). */
8185 while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE)
8187 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
8188 an INDIRECT_REF (for *...),
8189 a CALL_EXPR (for ...(...)),
8190 an identifier (for the name being declared)
8191 or a null pointer (for the place in an absolute declarator
8192 where the name was omitted).
8193 For the last two cases, we have just exited the loop.
8195 For C++ it could also be
8196 a SCOPE_REF (for class :: ...). In this case, we have converted
8197 sensible names to types, and those are the values we use to
8198 qualify the member name.
8199 an ADDR_EXPR (for &...),
8200 a BIT_NOT_EXPR (for destructors)
8202 At this point, TYPE is the type of elements of an array,
8203 or for a function to return, or for a pointer to point to.
8204 After this sequence of ifs, TYPE is the type of the
8205 array or function or pointer, and DECLARATOR has had its
8206 outermost layer removed. */
8208 if (TREE_CODE (type) == ERROR_MARK)
8210 if (TREE_CODE (declarator) == SCOPE_REF)
8211 declarator = TREE_OPERAND (declarator, 1);
8213 declarator = TREE_OPERAND (declarator, 0);
8216 if (quals != NULL_TREE
8217 && (declarator == NULL_TREE
8218 || TREE_CODE (declarator) != SCOPE_REF))
8220 if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE)
8221 ctype = TYPE_METHOD_BASETYPE (type);
8222 if (ctype != NULL_TREE)
8224 tree dummy = build_decl (TYPE_DECL, NULL_TREE, type);
8225 ctype = grok_method_quals (ctype, dummy, quals);
8226 type = TREE_TYPE (dummy);
8230 switch (TREE_CODE (declarator))
8234 register tree itype = NULL_TREE;
8235 register tree size = TREE_OPERAND (declarator, 1);
8236 /* The index is a signed object `sizetype' bits wide. */
8237 tree index_type = signed_type (sizetype);
8239 declarator = TREE_OPERAND (declarator, 0);
8241 /* Check for some types that there cannot be arrays of. */
8243 if (TYPE_MAIN_VARIANT (type) == void_type_node)
8245 cp_error ("declaration of `%D' as array of voids", dname);
8246 type = error_mark_node;
8249 if (TREE_CODE (type) == FUNCTION_TYPE)
8251 cp_error ("declaration of `%D' as array of functions", dname);
8252 type = error_mark_node;
8255 /* ARM $8.4.3: Since you can't have a pointer to a reference,
8256 you can't have arrays of references. If we allowed them,
8257 then we'd be saying x[i] is valid for an array x, but
8258 then you'd have to ask: what does `*(x + i)' mean? */
8259 if (TREE_CODE (type) == REFERENCE_TYPE)
8261 if (decl_context == TYPENAME)
8262 cp_error ("cannot make arrays of references");
8264 cp_error ("declaration of `%D' as array of references",
8266 type = error_mark_node;
8269 if (TREE_CODE (type) == OFFSET_TYPE)
8271 cp_error ("declaration of `%D' as array of data members",
8273 type = error_mark_node;
8276 if (TREE_CODE (type) == METHOD_TYPE)
8278 cp_error ("declaration of `%D' as array of function members",
8280 type = error_mark_node;
8283 if (size == error_mark_node)
8284 type = error_mark_node;
8286 if (type == error_mark_node)
8291 /* Must suspend_momentary here because the index
8292 type may need to live until the end of the function.
8293 For example, it is used in the declaration of a
8294 variable which requires destructing at the end of
8295 the function; then build_vec_delete will need this
8297 int yes = suspend_momentary ();
8298 /* might be a cast */
8299 if (TREE_CODE (size) == NOP_EXPR
8300 && TREE_TYPE (size) == TREE_TYPE (TREE_OPERAND (size, 0)))
8301 size = TREE_OPERAND (size, 0);
8303 /* If this involves a template parameter, it'll be
8304 constant, but we don't know what the value is yet. */
8305 if (processing_template_decl)
8307 itype = make_node (INTEGER_TYPE);
8308 TYPE_MIN_VALUE (itype) = size_zero_node;
8309 TYPE_MAX_VALUE (itype) = build_min
8310 (MINUS_EXPR, sizetype, size, integer_one_node);
8311 goto dont_grok_size;
8314 if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE
8315 && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE)
8317 cp_error ("size of array `%D' has non-integer type",
8319 size = integer_one_node;
8321 if (TREE_READONLY_DECL_P (size))
8322 size = decl_constant_value (size);
8323 if (pedantic && integer_zerop (size))
8324 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname);
8325 if (TREE_CONSTANT (size))
8327 int old_flag_pedantic_errors = flag_pedantic_errors;
8328 int old_pedantic = pedantic;
8329 pedantic = flag_pedantic_errors = 1;
8330 /* Always give overflow errors on array subscripts. */
8331 constant_expression_warning (size);
8332 pedantic = old_pedantic;
8333 flag_pedantic_errors = old_flag_pedantic_errors;
8334 if (INT_CST_LT (size, integer_zero_node))
8336 cp_error ("size of array `%D' is negative", dname);
8337 size = integer_one_node;
8345 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
8348 cp_pedwarn ("ANSI C++ forbids variable-size array");
8353 fold (build_binary_op (MINUS_EXPR,
8354 convert (index_type, size),
8355 convert (index_type,
8356 integer_one_node), 1));
8357 if (! TREE_CONSTANT (itype))
8358 itype = variable_size (itype);
8359 else if (TREE_OVERFLOW (itype))
8361 error ("overflow in array dimension");
8362 TREE_OVERFLOW (itype) = 0;
8365 /* If we're a parm, we need to have a permanent type so
8366 mangling checks for re-use will work right. If both the
8367 element and index types are permanent, the array type
8369 if (decl_context == PARM
8370 && allocation_temporary_p () && TREE_PERMANENT (type))
8372 push_obstacks (&permanent_obstack, &permanent_obstack);
8373 itype = build_index_type (itype);
8377 itype = build_index_type (itype);
8380 resume_momentary (yes);
8383 /* Build the array type itself, then merge any constancy or
8384 volatility into the target type. We must do it in this order
8385 to ensure that the TYPE_MAIN_VARIANT field of the array type
8386 is set correctly. */
8388 type = build_cplus_array_type (type, itype);
8389 if (constp || volatilep)
8390 type = cp_build_type_variant (type, constp, volatilep);
8400 tree inner_parms = TREE_OPERAND (declarator, 1);
8401 tree inner_decl = TREE_OPERAND (declarator, 0);
8403 /* Declaring a function type.
8404 Make sure we have a valid type for the function to return. */
8406 /* Is this an error? Should they be merged into TYPE here? */
8407 if (pedantic && (constp || volatilep))
8408 pedwarn ("function declared to return const or volatile result");
8410 /* Merge any constancy or volatility into the function return
8413 if (constp || volatilep)
8415 type = cp_build_type_variant (type, constp, volatilep);
8416 if (IS_AGGR_TYPE (type))
8417 build_pointer_type (type);
8423 /* Warn about some types functions can't return. */
8425 if (TREE_CODE (type) == FUNCTION_TYPE)
8427 error ("`%s' declared as function returning a function", name);
8428 type = integer_type_node;
8430 if (TREE_CODE (type) == ARRAY_TYPE)
8432 error ("`%s' declared as function returning an array", name);
8433 type = integer_type_node;
8436 if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF)
8437 inner_decl = TREE_OPERAND (inner_decl, 1);
8439 /* Pick up type qualifiers which should be applied to `this'. */
8440 quals = TREE_OPERAND (declarator, 2);
8442 /* Pick up the exception specifications. */
8443 raises = TREE_TYPE (declarator);
8445 /* Say it's a definition only for the CALL_EXPR
8446 closest to the identifier. */
8448 inner_decl && (TREE_CODE (inner_decl) == IDENTIFIER_NODE
8449 || TREE_CODE (inner_decl) == BIT_NOT_EXPR);
8451 if (ctype == NULL_TREE
8452 && decl_context == FIELD
8454 && (friendp == 0 || dname == current_class_name))
8455 ctype = current_class_type;
8457 if (ctype && return_type == return_conversion)
8458 TYPE_HAS_CONVERSION (ctype) = 1;
8459 if (ctype && constructor_name (ctype) == dname)
8461 /* We are within a class's scope. If our declarator name
8462 is the same as the class name, and we are defining
8463 a function, then it is a constructor/destructor, and
8464 therefore returns a void type. */
8466 if (flags == DTOR_FLAG)
8468 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
8469 not be declared const or volatile. A destructor
8470 may not be static. */
8472 error ("destructor cannot be static member function");
8475 error ("destructors cannot be declared `const' or `volatile'");
8476 return void_type_node;
8478 if (decl_context == FIELD)
8480 if (! member_function_or_else (ctype, current_class_type,
8481 "destructor for alien class `%s' cannot be a member"))
8482 return void_type_node;
8485 else /* it's a constructor. */
8489 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
8490 not be declared const or volatile. A constructor may
8491 not be virtual. A constructor may not be static. */
8493 error ("constructor cannot be static member function");
8496 pedwarn ("constructors cannot be declared virtual");
8501 error ("constructors cannot be declared `const' or `volatile'");
8502 return void_type_node;
8505 RID_BIT_TYPE tmp_bits;
8506 bcopy ((void*)&specbits, (void*)&tmp_bits, sizeof (RID_BIT_TYPE));
8507 RIDBIT_RESET (RID_INLINE, tmp_bits);
8508 RIDBIT_RESET (RID_STATIC, tmp_bits);
8509 if (RIDBIT_ANY_SET (tmp_bits))
8510 error ("return value type specifier for constructor ignored");
8512 type = build_pointer_type (ctype);
8513 if (decl_context == FIELD &&
8514 IS_SIGNATURE (current_class_type))
8516 error ("constructor not allowed in signature");
8517 return void_type_node;
8519 else if (decl_context == FIELD)
8521 if (! member_function_or_else (ctype, current_class_type,
8522 "constructor for alien class `%s' cannot be member"))
8523 return void_type_node;
8524 TYPE_HAS_CONSTRUCTOR (ctype) = 1;
8525 if (return_type != return_ctor)
8529 if (decl_context == FIELD)
8535 error ("can't initialize friend function `%s'", name);
8538 /* Cannot be both friend and virtual. */
8539 error ("virtual functions cannot be friends");
8540 RIDBIT_RESET (RID_FRIEND, specbits);
8543 if (decl_context == NORMAL)
8544 error ("friend declaration not in class definition");
8545 if (current_function_decl && funcdef_flag)
8546 cp_error ("can't define friend function `%s' in a local class definition",
8550 /* Construct the function type and go to the next
8551 inner layer of declarator. */
8553 declarator = TREE_OPERAND (declarator, 0);
8555 /* FIXME: This is where default args should be fully
8558 arg_types = grokparms (inner_parms, funcdecl_p ? funcdef_flag : 0);
8562 /* Get past destructors, etc.
8563 We know we have one because FLAGS will be non-zero.
8565 Complain about improper parameter lists here. */
8566 if (TREE_CODE (declarator) == BIT_NOT_EXPR)
8568 declarator = TREE_OPERAND (declarator, 0);
8570 if (strict_prototype == 0 && arg_types == NULL_TREE)
8571 arg_types = void_list_node;
8572 else if (arg_types == NULL_TREE
8573 || arg_types != void_list_node)
8575 error ("destructors cannot be specified with parameters");
8576 arg_types = void_list_node;
8581 /* ANSI says that `const int foo ();'
8582 does not make the function foo const. */
8583 type = build_function_type (type, arg_types);
8589 /* Filter out pointers-to-references and references-to-references.
8590 We can get these if a TYPE_DECL is used. */
8592 if (TREE_CODE (type) == REFERENCE_TYPE)
8594 error ("cannot declare %s to references",
8595 TREE_CODE (declarator) == ADDR_EXPR
8596 ? "references" : "pointers");
8597 declarator = TREE_OPERAND (declarator, 0);
8601 if (TREE_CODE (type) == OFFSET_TYPE
8602 && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE
8603 || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE))
8605 cp_error ("cannot declare pointer to `%#T' member",
8607 type = TREE_TYPE (type);
8610 /* Merge any constancy or volatility into the target type
8613 if (constp || volatilep)
8615 /* A const or volatile signature pointer/reference is
8616 pointing to a const or volatile object, i.e., the
8617 `optr' is const or volatile, respectively, not the
8618 signature pointer/reference itself. */
8619 if (! IS_SIGNATURE (type))
8621 type = cp_build_type_variant (type, constp, volatilep);
8622 if (IS_AGGR_TYPE (type))
8623 build_pointer_type (type);
8629 if (IS_SIGNATURE (type))
8631 if (TREE_CODE (declarator) == ADDR_EXPR)
8633 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
8634 && TYPE_SIZE (type))
8635 cp_warning ("empty signature `%T' used in signature reference declaration",
8638 type = build_signature_reference_type (type,
8641 sorry ("signature reference");
8647 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
8648 && TYPE_SIZE (type))
8649 cp_warning ("empty signature `%T' used in signature pointer declaration",
8651 type = build_signature_pointer_type (type,
8657 else if (TREE_CODE (declarator) == ADDR_EXPR)
8659 if (TREE_CODE (type) == FUNCTION_TYPE)
8661 error ("cannot declare references to functions; use pointer to function instead");
8662 type = build_pointer_type (type);
8666 if (TYPE_MAIN_VARIANT (type) == void_type_node)
8667 error ("invalid type: `void &'");
8669 type = build_reference_type (type);
8672 else if (TREE_CODE (type) == METHOD_TYPE)
8674 type = build_ptrmemfunc_type (build_pointer_type (type));
8677 type = build_pointer_type (type);
8679 /* Process a list of type modifier keywords (such as
8680 const or volatile) that were given inside the `*' or `&'. */
8682 if (TREE_TYPE (declarator))
8684 register tree typemodlist;
8686 for (typemodlist = TREE_TYPE (declarator); typemodlist;
8687 typemodlist = TREE_CHAIN (typemodlist))
8689 if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_CONST])
8691 else if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_VOLATILE])
8696 error ("invalid type modifier within %s declarator",
8697 TREE_CODE (declarator) == ADDR_EXPR
8698 ? "reference" : "pointer");
8702 pedwarn ("duplicate `const'");
8704 pedwarn ("duplicate `volatile'");
8705 if (TREE_CODE (declarator) == ADDR_EXPR
8706 && (constp || volatilep))
8709 pedwarn ("discarding `const' applied to a reference");
8711 pedwarn ("discarding `volatile' applied to a reference");
8712 constp = volatilep = 0;
8715 declarator = TREE_OPERAND (declarator, 0);
8721 /* We have converted type names to NULL_TREE if the
8722 name was bogus, or to a _TYPE node, if not.
8724 The variable CTYPE holds the type we will ultimately
8725 resolve to. The code here just needs to build
8726 up appropriate member types. */
8727 tree sname = TREE_OPERAND (declarator, 1);
8728 /* Destructors can have their visibilities changed as well. */
8729 if (TREE_CODE (sname) == BIT_NOT_EXPR)
8730 sname = TREE_OPERAND (sname, 0);
8732 if (TREE_COMPLEXITY (declarator) == 0)
8733 /* This needs to be here, in case we are called
8734 multiple times. */ ;
8735 else if (friendp && (TREE_COMPLEXITY (declarator) < 2))
8736 /* don't fall out into global scope. Hides real bug? --eichin */ ;
8737 else if (! IS_AGGR_TYPE_CODE
8738 (TREE_CODE (TREE_OPERAND (declarator, 0))))
8740 else if (TREE_COMPLEXITY (declarator) == current_class_depth)
8742 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
8743 that refer to ctype. They couldn't be resolved earlier
8744 because we hadn't pushed into the class yet.
8745 Example: resolve 'B<T>::type' in
8746 'B<typename B<T>::type> B<T>::f () { }'. */
8747 if (current_template_parms
8748 && uses_template_parms (type)
8749 && uses_template_parms (current_class_type))
8751 tree args = current_template_args ();
8752 type = tsubst (type, &TREE_VEC_ELT (args, 0),
8753 TREE_VEC_LENGTH (args), NULL_TREE);
8756 /* This pop_nested_class corresponds to the
8757 push_nested_class used to push into class scope for
8758 parsing the argument list of a function decl, in
8760 pop_nested_class (1);
8761 TREE_COMPLEXITY (declarator) = current_class_depth;
8764 my_friendly_abort (16);
8766 if (TREE_OPERAND (declarator, 0) == NULL_TREE)
8768 /* We had a reference to a global decl, or
8769 perhaps we were given a non-aggregate typedef,
8770 in which case we cleared this out, and should just
8771 keep going as though it wasn't there. */
8775 ctype = TREE_OPERAND (declarator, 0);
8777 if (sname == NULL_TREE)
8780 if (TREE_CODE (sname) == IDENTIFIER_NODE)
8782 /* This is the `standard' use of the scoping operator:
8783 basetype :: member . */
8785 if (ctype == current_class_type)
8791 Is this ill-formed? */
8794 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
8797 else if (TREE_CODE (type) == FUNCTION_TYPE)
8799 if (current_class_type == NULL_TREE
8801 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
8802 TREE_TYPE (type), TYPE_ARG_TYPES (type));
8805 cp_error ("cannot declare member function `%T::%s' within `%T'",
8806 ctype, name, current_class_type);
8807 return void_type_node;
8810 else if (RIDBIT_SETP (RID_TYPEDEF, specbits)
8811 || TYPE_SIZE (complete_type (ctype)) != NULL_TREE)
8813 /* have to move this code elsewhere in this function.
8814 this code is used for i.e., typedef int A::M; M *pm;
8816 It is? How? jason 10/2/94 */
8818 if (current_class_type)
8820 cp_error ("cannot declare member `%T::%s' within `%T'",
8821 ctype, name, current_class_type);
8822 return void_type_node;
8824 type = build_offset_type (ctype, type);
8826 else if (uses_template_parms (ctype))
8828 if (TREE_CODE (type) == FUNCTION_TYPE)
8830 build_cplus_method_type (build_type_variant (ctype,
8834 TYPE_ARG_TYPES (type));
8838 cp_error ("structure `%T' not yet defined", ctype);
8839 return error_mark_node;
8844 else if (TREE_CODE (sname) == SCOPE_REF)
8845 my_friendly_abort (17);
8849 declarator = TREE_OPERAND (declarator, 1);
8850 if (declarator && TREE_CODE (declarator) == CALL_EXPR)
8851 /* In this case, we will deal with it later. */
8855 if (TREE_CODE (type) == FUNCTION_TYPE)
8856 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), TREE_TYPE (type), TYPE_ARG_TYPES (type));
8858 type = build_offset_type (ctype, type);
8865 declarator = TREE_OPERAND (declarator, 0);
8871 declarator = NULL_TREE;
8875 declarator = NULL_TREE;
8879 my_friendly_abort (158);
8885 error ("only constructors can be declared `explicit'");
8889 /* Now TYPE has the actual type. */
8891 /* If this is declaring a typedef name, return a TYPE_DECL. */
8893 if (RIDBIT_SETP (RID_MUTABLE, specbits))
8897 error ("const `%s' cannot be declared `mutable'", name);
8898 RIDBIT_RESET (RID_MUTABLE, specbits);
8902 error ("static `%s' cannot be declared `mutable'", name);
8903 RIDBIT_RESET (RID_MUTABLE, specbits);
8907 if (RIDBIT_SETP (RID_TYPEDEF, specbits) && decl_context != TYPENAME)
8911 /* Note that the grammar rejects storage classes
8912 in typenames, fields or parameters. */
8913 if (constp || volatilep)
8914 type = cp_build_type_variant (type, constp, volatilep);
8916 if (decl_context == FIELD)
8918 if (declarator == current_class_name)
8919 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
8921 decl = build_lang_decl (TYPE_DECL, declarator, type);
8922 if (IS_SIGNATURE (current_class_type) && opaque_typedef)
8923 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type) = 1;
8926 decl = build_decl (TYPE_DECL, declarator, type);
8928 /* If the user declares "struct {...} foo" then `foo' will have
8929 an anonymous name. Fill that name in now. Nothing can
8930 refer to it, so nothing needs know about the name change.
8931 The TYPE_NAME field was filled in by build_struct_xref. */
8932 if (type != error_mark_node
8934 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
8935 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type)))
8937 /* replace the anonymous name with the real name everywhere. */
8938 lookup_tag_reverse (type, declarator);
8939 TYPE_NAME (type) = decl;
8941 if (TYPE_LANG_SPECIFIC (type))
8942 TYPE_WAS_ANONYMOUS (type) = 1;
8944 DECL_ASSEMBLER_NAME (decl) = DECL_NAME (decl);
8945 DECL_ASSEMBLER_NAME (decl)
8946 = get_identifier (build_overload_name (type, 1, 1));
8949 if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE)
8951 cp_error_at ("typedef name may not be class-qualified", decl);
8956 if (ctype == NULL_TREE)
8958 if (TREE_CODE (type) != METHOD_TYPE)
8959 cp_error_at ("invalid type qualifier for non-method type", decl);
8961 ctype = TYPE_METHOD_BASETYPE (type);
8963 if (ctype != NULL_TREE)
8964 grok_method_quals (ctype, decl, quals);
8967 if (RIDBIT_SETP (RID_SIGNED, specbits)
8968 || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
8969 C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
8971 if (RIDBIT_SETP (RID_MUTABLE, specbits))
8973 error ("non-object member `%s' cannot be declared mutable", name);
8976 bad_specifiers (decl, "type", virtualp, quals != NULL_TREE,
8977 inlinep, friendp, raises != NULL_TREE);
8980 error ("typedef declaration includes an initializer");
8985 /* Detect the case of an array type of unspecified size
8986 which came, as such, direct from a typedef name.
8987 We must copy the type, so that each identifier gets
8988 a distinct type, so that each identifier's size can be
8989 controlled separately by its own initializer. */
8991 if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE
8992 && TYPE_DOMAIN (type) == NULL_TREE)
8994 type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type));
8997 /* If this is a type name (such as, in a cast or sizeof),
8998 compute the type and return it now. */
9000 if (decl_context == TYPENAME)
9002 /* Note that the grammar rejects storage classes
9003 in typenames, fields or parameters. */
9004 if (constp || volatilep)
9005 if (IS_SIGNATURE (type))
9006 error ("`const' or `volatile' specified with signature type");
9008 type = cp_build_type_variant (type, constp, volatilep);
9010 /* Special case: "friend class foo" looks like a TYPENAME context. */
9015 cp_error ("`volatile' specified for friend class declaration");
9020 cp_error ("`inline' specified for friend class declaration");
9024 /* Only try to do this stuff if we didn't already give up. */
9025 if (type != integer_type_node)
9027 /* A friendly class? */
9028 if (current_class_type)
9029 make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type));
9031 error ("trying to make class `%s' a friend of global scope",
9032 TYPE_NAME_STRING (type));
9033 type = void_type_node;
9038 tree dummy = build_decl (TYPE_DECL, declarator, type);
9039 if (ctype == NULL_TREE)
9041 my_friendly_assert (TREE_CODE (type) == METHOD_TYPE, 159);
9042 ctype = TYPE_METHOD_BASETYPE (type);
9044 grok_method_quals (ctype, dummy, quals);
9045 type = TREE_TYPE (dummy);
9050 else if (declarator == NULL_TREE && decl_context != PARM
9051 && decl_context != CATCHPARM
9052 && TREE_CODE (type) != UNION_TYPE
9055 cp_error ("abstract declarator `%T' used as declaration", type);
9056 declarator = make_anon_name ();
9059 /* `void' at top level (not within pointer)
9060 is allowed only in typedefs or type names.
9061 We don't complain about parms either, but that is because
9062 a better error message can be made later. */
9064 if (TYPE_MAIN_VARIANT (type) == void_type_node && decl_context != PARM)
9067 error ("unnamed variable or field declared void");
9068 else if (TREE_CODE (declarator) == IDENTIFIER_NODE)
9070 if (IDENTIFIER_OPNAME_P (declarator))
9071 my_friendly_abort (356);
9073 error ("variable or field `%s' declared void", name);
9076 error ("variable or field declared void");
9077 type = integer_type_node;
9080 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
9081 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
9086 if (decl_context == PARM)
9089 error ("cannot use `::' in parameter declaration");
9091 /* A parameter declared as an array of T is really a pointer to T.
9092 One declared as a function is really a pointer to a function.
9093 One declared as a member is really a pointer to member. */
9095 if (TREE_CODE (type) == ARRAY_TYPE)
9097 /* Transfer const-ness of array into that of type pointed to. */
9098 type = build_pointer_type
9099 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
9100 volatilep = constp = 0;
9102 else if (TREE_CODE (type) == FUNCTION_TYPE)
9103 type = build_pointer_type (type);
9104 else if (TREE_CODE (type) == OFFSET_TYPE)
9105 type = build_pointer_type (type);
9106 else if (type == void_type_node && declarator)
9108 error ("declaration of `%s' as void", name);
9112 decl = build_decl (PARM_DECL, declarator, complete_type (type));
9114 bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE,
9115 inlinep, friendp, raises != NULL_TREE);
9116 if (current_class_type
9117 && IS_SIGNATURE (current_class_type))
9120 error ("parameter of signature member function declared `inline'");
9121 if (RIDBIT_SETP (RID_AUTO, specbits))
9122 error ("parameter of signature member function declared `auto'");
9123 if (RIDBIT_SETP (RID_REGISTER, specbits))
9124 error ("parameter of signature member function declared `register'");
9127 /* Compute the type actually passed in the parmlist,
9128 for the case where there is no prototype.
9129 (For example, shorts and chars are passed as ints.)
9130 When there is a prototype, this is overridden later. */
9132 DECL_ARG_TYPE (decl) = type_promotes_to (type);
9134 else if (decl_context == FIELD)
9136 if (type == error_mark_node)
9138 /* Happens when declaring arrays of sizes which
9139 are error_mark_node, for example. */
9142 else if (TREE_CODE (type) == FUNCTION_TYPE)
9146 /* We catch the others as conflicts with the builtin
9148 if (friendp && declarator == ridpointers[(int) RID_SIGNED])
9150 cp_error ("function `%D' cannot be declared friend",
9157 if (ctype == NULL_TREE)
9158 ctype = current_class_type;
9160 if (ctype == NULL_TREE)
9162 cp_error ("can't make `%D' into a method -- not in a class",
9164 return void_type_node;
9167 /* ``A union may [ ... ] not [ have ] virtual functions.''
9169 if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
9171 cp_error ("function `%D' declared virtual inside a union",
9173 return void_type_node;
9176 if (declarator == ansi_opname[(int) NEW_EXPR]
9177 || declarator == ansi_opname[(int) VEC_NEW_EXPR]
9178 || declarator == ansi_opname[(int) DELETE_EXPR]
9179 || declarator == ansi_opname[(int) VEC_DELETE_EXPR])
9183 cp_error ("`%D' cannot be declared virtual, since it is always static",
9188 else if (staticp < 2)
9189 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9190 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9193 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
9194 publicp = (! friendp
9195 || RIDBIT_SETP (RID_EXTERN, specbits)
9196 || ! (funcdef_flag < 0 || inlinep));
9197 decl = grokfndecl (ctype, type, declarator,
9198 virtualp, flags, quals, raises, attrlist,
9199 friendp ? -1 : 0, publicp, inlinep,
9201 if (decl == NULL_TREE)
9204 /* This clobbers the attrs stored in `decl' from `attrlist'. */
9205 /* The decl and setting of decl_machine_attr is also turned off. */
9206 decl = build_decl_attribute_variant (decl, decl_machine_attr);
9210 DECL_NONCONVERTING_P (decl) = 1;
9212 else if (TREE_CODE (type) == METHOD_TYPE)
9214 /* We only get here for friend declarations of
9215 members of other classes. */
9216 /* All method decls are public, so tell grokfndecl to set
9217 TREE_PUBLIC, also. */
9218 decl = grokfndecl (ctype, type, declarator,
9219 virtualp, flags, quals, raises, attrlist,
9220 friendp ? -1 : 0, 1, 0, funcdef_flag);
9221 if (decl == NULL_TREE)
9224 else if (!staticp && ! processing_template_decl
9225 && TYPE_SIZE (complete_type (type)) == NULL_TREE
9226 && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
9229 cp_error ("field `%D' has incomplete type", declarator);
9231 cp_error ("name `%T' has incomplete type", type);
9233 /* If we're instantiating a template, tell them which
9234 instantiation made the field's type be incomplete. */
9235 if (current_class_type
9236 && TYPE_NAME (current_class_type)
9237 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type))
9238 && declspecs && TREE_VALUE (declspecs)
9239 && TREE_TYPE (TREE_VALUE (declspecs)) == type)
9240 cp_error (" in instantiation of template `%T'",
9241 current_class_type);
9243 type = error_mark_node;
9250 error ("`%s' is neither function nor method; cannot be declared friend",
9251 IDENTIFIER_POINTER (declarator));
9259 /* Friends are treated specially. */
9260 if (ctype == current_class_type)
9261 warning ("member functions are implicitly friends of their class");
9265 if (decl && DECL_NAME (decl))
9266 t = do_friend (ctype, declarator, decl,
9267 last_function_parms, flags, quals,
9269 if (t && funcdef_flag)
9272 return void_type_node;
9276 /* Structure field. It may not be a function, except for C++ */
9278 if (decl == NULL_TREE)
9282 /* Motion 10 at San Diego: If a static const integral data
9283 member is initialized with an integral constant
9284 expression, the initializer may appear either in the
9285 declaration (within the class), or in the definition,
9286 but not both. If it appears in the class, the member is
9287 a member constant. The file-scope definition is always
9294 cp_pedwarn ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
9297 else if (! INTEGRAL_TYPE_P (type))
9298 cp_pedwarn ("ANSI C++ forbids member constant `%D' of non-integral type `%T'", declarator, type);
9302 /* Note that initialization of const members is prohibited
9303 by the draft ANSI standard, though it appears to be in
9304 common practice. 12.6.2: The argument list is used to
9305 initialize the named nonstatic member.... This (or an
9306 initializer list) is the only way to initialize
9307 nonstatic const and reference members. */
9308 else if (pedantic || ! constp)
9309 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
9310 constp ? "const member" : "member", declarator);
9313 if (staticp || (constp && initialized))
9315 /* ANSI C++ Apr '95 wp 9.2 */
9316 if (staticp && declarator == current_class_name)
9317 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
9320 /* C++ allows static class members.
9321 All other work for this is done by grokfield.
9322 This VAR_DECL is built by build_lang_field_decl.
9323 All other VAR_DECLs are built by build_decl. */
9324 decl = build_lang_field_decl (VAR_DECL, declarator, type);
9325 TREE_STATIC (decl) = 1;
9326 /* In class context, 'static' means public access. */
9327 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = !!staticp;
9331 decl = build_lang_field_decl (FIELD_DECL, declarator, type);
9332 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9334 DECL_MUTABLE_P (decl) = 1;
9335 RIDBIT_RESET (RID_MUTABLE, specbits);
9339 bad_specifiers (decl, "field", virtualp, quals != NULL_TREE,
9340 inlinep, friendp, raises != NULL_TREE);
9343 else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE)
9345 tree original_name = declarator;
9351 if (RIDBIT_SETP (RID_AUTO, specbits))
9352 error ("storage class `auto' invalid for function `%s'", name);
9353 else if (RIDBIT_SETP (RID_REGISTER, specbits))
9354 error ("storage class `register' invalid for function `%s'", name);
9356 /* Function declaration not at top level.
9357 Storage classes other than `extern' are not allowed
9358 and `extern' makes no difference. */
9359 if (! toplevel_bindings_p ()
9360 && (RIDBIT_SETP (RID_STATIC, specbits)
9361 || RIDBIT_SETP (RID_INLINE, specbits))
9364 if (RIDBIT_SETP (RID_STATIC, specbits))
9365 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name);
9367 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name);
9370 if (ctype == NULL_TREE)
9374 error ("virtual non-class function `%s'", name);
9378 if (current_lang_name == lang_name_cplusplus
9379 && ! processing_template_decl
9380 && ! (IDENTIFIER_LENGTH (original_name) == 4
9381 && IDENTIFIER_POINTER (original_name)[0] == 'm'
9382 && strcmp (IDENTIFIER_POINTER (original_name), "main") == 0)
9383 && ! (IDENTIFIER_LENGTH (original_name) > 10
9384 && IDENTIFIER_POINTER (original_name)[0] == '_'
9385 && IDENTIFIER_POINTER (original_name)[1] == '_'
9386 && strncmp (IDENTIFIER_POINTER (original_name)+2, "builtin_", 8) == 0))
9387 /* Plain overloading: will not be grok'd by grokclassfn. */
9388 declarator = build_decl_overload (dname, TYPE_ARG_TYPES (type), 0);
9390 else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2)
9391 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9392 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9394 /* Record presence of `static'. In C++, `inline' implies `static'. */
9395 publicp = (ctype != NULL_TREE
9396 || RIDBIT_SETP (RID_EXTERN, specbits)
9397 || (!RIDBIT_SETP (RID_STATIC, specbits)
9398 && !RIDBIT_SETP (RID_INLINE, specbits)));
9400 decl = grokfndecl (ctype, type, original_name,
9401 virtualp, flags, quals, raises, attrlist,
9403 publicp, inlinep, funcdef_flag);
9404 if (decl == NULL_TREE)
9407 if (ctype == NULL_TREE && DECL_LANGUAGE (decl) != lang_c)
9408 DECL_ASSEMBLER_NAME (decl) = current_namespace_id (declarator);
9412 int illegal_static = 0;
9414 /* Don't allow a static member function in a class, and forbid
9415 declaring main to be static. */
9416 if (TREE_CODE (type) == METHOD_TYPE)
9418 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl);
9421 else if (current_function_decl)
9423 /* FIXME need arm citation */
9424 error ("cannot declare static function inside another function");
9431 RIDBIT_RESET (RID_STATIC, specbits);
9437 /* It's a variable. */
9439 if (decl_context == CATCHPARM)
9444 error ("cannot use `::' in parameter declaration");
9447 /* A parameter declared as an array of T is really a pointer to T.
9448 One declared as a function is really a pointer to a function.
9449 One declared as a member is really a pointer to member. */
9451 if (TREE_CODE (type) == ARRAY_TYPE)
9453 /* Transfer const-ness of array into that of type
9455 type = build_pointer_type
9456 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
9457 volatilep = constp = 0;
9459 else if (TREE_CODE (type) == FUNCTION_TYPE)
9460 type = build_pointer_type (type);
9461 else if (TREE_CODE (type) == OFFSET_TYPE)
9462 type = build_pointer_type (type);
9465 /* An uninitialized decl with `extern' is a reference. */
9466 decl = grokvardecl (type, declarator, &specbits, initialized, constp);
9467 bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE,
9468 inlinep, friendp, raises != NULL_TREE);
9472 DECL_CONTEXT (decl) = ctype;
9475 cp_pedwarn ("static member `%D' re-declared as static", decl);
9477 RIDBIT_RESET (RID_STATIC, specbits);
9479 if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl))
9481 cp_error ("static member `%D' declared `register'", decl);
9482 RIDBIT_RESET (RID_REGISTER, specbits);
9484 if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic)
9486 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
9488 RIDBIT_RESET (RID_EXTERN, specbits);
9493 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9495 error ("`%s' cannot be declared mutable", name);
9498 /* Record `register' declaration for warnings on &
9499 and in case doing stupid register allocation. */
9501 if (RIDBIT_SETP (RID_REGISTER, specbits))
9502 DECL_REGISTER (decl) = 1;
9504 if (RIDBIT_SETP (RID_EXTERN, specbits))
9505 DECL_THIS_EXTERN (decl) = 1;
9507 if (RIDBIT_SETP (RID_STATIC, specbits))
9508 DECL_THIS_STATIC (decl) = 1;
9510 /* Record constancy and volatility. */
9513 TREE_READONLY (decl) = TREE_CODE (type) != REFERENCE_TYPE;
9516 TREE_SIDE_EFFECTS (decl) = 1;
9517 TREE_THIS_VOLATILE (decl) = 1;
9524 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
9525 An empty exprlist is a parmlist. An exprlist which
9526 contains only identifiers at the global level
9527 is a parmlist. Otherwise, it is an exprlist. */
9530 parmlist_is_exprlist (exprs)
9533 if (exprs == NULL_TREE || TREE_PARMLIST (exprs))
9536 if (toplevel_bindings_p ())
9538 /* At the global level, if these are all identifiers,
9539 then it is a parmlist. */
9542 if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE)
9544 exprs = TREE_CHAIN (exprs);
9551 /* Subroutine of `grokparms'. In a fcn definition, arg types must
9554 C++: also subroutine of `start_function'. */
9557 require_complete_types_for_parms (parms)
9560 if (processing_template_decl)
9565 tree type = TREE_TYPE (parms);
9566 if (TYPE_SIZE (complete_type (type)) == NULL_TREE)
9568 if (DECL_NAME (parms))
9569 error ("parameter `%s' has incomplete type",
9570 IDENTIFIER_POINTER (DECL_NAME (parms)));
9572 error ("parameter has incomplete type");
9573 TREE_TYPE (parms) = error_mark_node;
9576 /* If the arg types are incomplete in a declaration,
9577 they must include undefined tags.
9578 These tags can never be defined in the scope of the declaration,
9579 so the types can never be completed,
9580 and no call can be compiled successfully. */
9581 /* This is not the right behavior for C++, but not having
9582 it is also probably wrong. */
9585 /* Now warn if is a pointer to an incomplete type. */
9586 while (TREE_CODE (type) == POINTER_TYPE
9587 || TREE_CODE (type) == REFERENCE_TYPE)
9588 type = TREE_TYPE (type);
9589 type = TYPE_MAIN_VARIANT (type);
9590 if (TYPE_SIZE (type) == NULL_TREE)
9592 if (DECL_NAME (parm) != NULL_TREE)
9593 warning ("parameter `%s' points to incomplete type",
9594 IDENTIFIER_POINTER (DECL_NAME (parm)));
9596 warning ("parameter points to incomplete type");
9600 parms = TREE_CHAIN (parms);
9604 /* Decode the list of parameter types for a function type.
9605 Given the list of things declared inside the parens,
9606 return a list of types.
9608 The list we receive can have three kinds of elements:
9609 an IDENTIFIER_NODE for names given without types,
9610 a TREE_LIST node for arguments given as typespecs or names with typespecs,
9611 or void_type_node, to mark the end of an argument list
9612 when additional arguments are not permitted (... was not used).
9614 FUNCDEF_FLAG is nonzero for a function definition, 0 for
9615 a mere declaration. A nonempty identifier-list gets an error message
9616 when FUNCDEF_FLAG is zero.
9617 If FUNCDEF_FLAG is 1, then parameter types must be complete.
9618 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
9620 If all elements of the input list contain types,
9621 we return a list of the types.
9622 If all elements contain no type (except perhaps a void_type_node
9623 at the end), we return a null list.
9624 If some have types and some do not, it is an error, and we
9627 Also set last_function_parms to either
9628 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
9629 A list of names is converted to a chain of PARM_DECLs
9630 by store_parm_decls so that ultimately it is always a chain of decls.
9632 Note that in C++, parameters can take default values. These default
9633 values are in the TREE_PURPOSE field of the TREE_LIST. It is
9634 an error to specify default values which are followed by parameters
9635 that have no default values, or an ELLIPSES. For simplicities sake,
9636 only parameters which are specified with their types can take on
9640 grokparms (first_parm, funcdef_flag)
9644 tree result = NULL_TREE;
9645 tree decls = NULL_TREE;
9647 if (first_parm != NULL_TREE
9648 && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE)
9651 pedwarn ("parameter names (without types) in function declaration");
9652 last_function_parms = first_parm;
9655 else if (first_parm != NULL_TREE
9656 && TREE_CODE (TREE_VALUE (first_parm)) != TREE_LIST
9657 && TREE_VALUE (first_parm) != void_type_node)
9658 my_friendly_abort (145);
9661 /* Types were specified. This is a list of declarators
9662 each represented as a TREE_LIST node. */
9663 register tree parm, chain;
9664 int any_init = 0, any_error = 0;
9666 if (first_parm != NULL_TREE)
9668 tree last_result = NULL_TREE;
9669 tree last_decl = NULL_TREE;
9671 for (parm = first_parm; parm != NULL_TREE; parm = chain)
9673 tree type, list_node = parm;
9674 register tree decl = TREE_VALUE (parm);
9675 tree init = TREE_PURPOSE (parm);
9677 chain = TREE_CHAIN (parm);
9678 /* @@ weak defense against parse errors. */
9679 if (decl != void_type_node && TREE_CODE (decl) != TREE_LIST)
9681 /* Give various messages as the need arises. */
9682 if (TREE_CODE (decl) == STRING_CST)
9683 cp_error ("invalid string constant `%E'", decl);
9684 else if (TREE_CODE (decl) == INTEGER_CST)
9685 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
9689 if (decl != void_type_node)
9691 decl = grokdeclarator (TREE_VALUE (decl),
9692 TREE_PURPOSE (decl),
9693 PARM, init != NULL_TREE,
9697 type = TREE_TYPE (decl);
9698 if (TYPE_MAIN_VARIANT (type) == void_type_node)
9699 decl = void_type_node;
9700 else if (TREE_CODE (type) == METHOD_TYPE)
9702 if (DECL_NAME (decl))
9703 /* Cannot use the decl here because
9704 we don't have DECL_CONTEXT set up yet. */
9705 cp_error ("parameter `%D' invalidly declared method type",
9708 error ("parameter invalidly declared method type");
9709 type = build_pointer_type (type);
9710 TREE_TYPE (decl) = type;
9712 else if (TREE_CODE (type) == OFFSET_TYPE)
9714 if (DECL_NAME (decl))
9715 cp_error ("parameter `%D' invalidly declared offset type",
9718 error ("parameter invalidly declared offset type");
9719 type = build_pointer_type (type);
9720 TREE_TYPE (decl) = type;
9722 else if (TREE_CODE (type) == RECORD_TYPE
9723 && TYPE_LANG_SPECIFIC (type)
9724 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
9726 abstract_virtuals_error (decl, type);
9727 any_error = 1; /* seems like a good idea */
9729 else if (TREE_CODE (type) == RECORD_TYPE
9730 && TYPE_LANG_SPECIFIC (type)
9731 && IS_SIGNATURE (type))
9733 signature_error (decl, type);
9734 any_error = 1; /* seems like a good idea */
9738 if (decl == void_type_node)
9740 if (result == NULL_TREE)
9742 result = void_list_node;
9743 last_result = result;
9747 TREE_CHAIN (last_result) = void_list_node;
9748 last_result = void_list_node;
9751 && (chain != void_list_node || TREE_CHAIN (chain)))
9752 error ("`void' in parameter list must be entire list");
9756 /* Since there is a prototype, args are passed in their own types. */
9757 DECL_ARG_TYPE (decl) = TREE_TYPE (decl);
9758 #ifdef PROMOTE_PROTOTYPES
9759 if ((TREE_CODE (type) == INTEGER_TYPE
9760 || TREE_CODE (type) == ENUMERAL_TYPE)
9761 && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
9762 DECL_ARG_TYPE (decl) = integer_type_node;
9769 if (TREE_CODE (init) == SAVE_EXPR)
9770 PARM_DECL_EXPR (init) = 1;
9771 else if (processing_template_decl)
9773 else if (TREE_CODE (init) == VAR_DECL
9774 || TREE_CODE (init) == PARM_DECL)
9776 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init)))
9778 /* ``Local variables may not be used in default
9779 argument expressions.'' dpANSI C++ 8.2.6 */
9780 /* If extern int i; within a function is not
9781 considered a local variable, then this code is
9783 cp_error ("local variable `%D' may not be used as a default argument", init);
9786 else if (TREE_READONLY_DECL_P (init))
9787 init = decl_constant_value (init);
9790 init = require_instantiated_type (type, init, integer_zero_node);
9791 if (! processing_template_decl
9792 && ! can_convert_arg (type, TREE_TYPE (init), init))
9793 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
9794 TREE_TYPE (init), decl);
9800 if (decls == NULL_TREE)
9807 TREE_CHAIN (last_decl) = decl;
9810 if (TREE_PERMANENT (list_node))
9812 TREE_PURPOSE (list_node) = init;
9813 TREE_VALUE (list_node) = type;
9814 TREE_CHAIN (list_node) = NULL_TREE;
9817 list_node = saveable_tree_cons (init, type, NULL_TREE);
9818 if (result == NULL_TREE)
9821 last_result = result;
9825 TREE_CHAIN (last_result) = list_node;
9826 last_result = list_node;
9830 TREE_CHAIN (last_result) = NULL_TREE;
9831 /* If there are no parameters, and the function does not end
9832 with `...', then last_decl will be NULL_TREE. */
9833 if (last_decl != NULL_TREE)
9834 TREE_CHAIN (last_decl) = NULL_TREE;
9838 last_function_parms = decls;
9840 /* In a fcn definition, arg types must be complete. */
9841 if (funcdef_flag > 0)
9842 require_complete_types_for_parms (last_function_parms);
9851 tree t = FUNCTION_ARG_CHAIN (d);
9852 if (t && TREE_CODE (TREE_VALUE (t)) == REFERENCE_TYPE
9853 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t)))
9854 == DECL_CLASS_CONTEXT (d))
9855 && (TREE_CHAIN (t) == NULL_TREE
9856 || TREE_CHAIN (t) == void_list_node
9857 || TREE_PURPOSE (TREE_CHAIN (t))))
9862 /* These memoizing functions keep track of special properties which
9863 a class may have. `grok_ctor_properties' notices whether a class
9864 has a constructor of the form X(X&), and also complains
9865 if the class has a constructor of the form X(X).
9866 `grok_op_properties' takes notice of the various forms of
9867 operator= which are defined, as well as what sorts of type conversion
9868 may apply. Both functions take a FUNCTION_DECL as an argument. */
9871 grok_ctor_properties (ctype, decl)
9874 tree parmtypes = FUNCTION_ARG_CHAIN (decl);
9875 tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node;
9877 /* When a type has virtual baseclasses, a magical first int argument is
9878 added to any ctor so we can tell if the class has been initialized
9879 yet. This could screw things up in this function, so we deliberately
9880 ignore the leading int if we're in that situation. */
9882 && TREE_VALUE (parmtypes) == integer_type_node
9883 && TYPE_USES_VIRTUAL_BASECLASSES (ctype))
9885 parmtypes = TREE_CHAIN (parmtypes);
9886 parmtype = TREE_VALUE (parmtypes);
9889 if (TREE_CODE (parmtype) == REFERENCE_TYPE
9890 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype)
9892 if (TREE_CHAIN (parmtypes) == NULL_TREE
9893 || TREE_CHAIN (parmtypes) == void_list_node
9894 || TREE_PURPOSE (TREE_CHAIN (parmtypes)))
9896 TYPE_HAS_INIT_REF (ctype) = 1;
9897 if (TYPE_READONLY (TREE_TYPE (parmtype)))
9898 TYPE_HAS_CONST_INIT_REF (ctype) = 1;
9901 TYPE_GETS_INIT_AGGR (ctype) = 1;
9903 else if (TYPE_MAIN_VARIANT (parmtype) == ctype)
9905 if (TREE_CHAIN (parmtypes) != NULL_TREE
9906 && TREE_CHAIN (parmtypes) == void_list_node)
9908 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
9910 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype);
9915 TYPE_GETS_INIT_AGGR (ctype) = 1;
9917 else if (TREE_CODE (parmtype) == VOID_TYPE
9918 || TREE_PURPOSE (parmtypes) != NULL_TREE)
9919 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1;
9924 /* An operator with this name can be either unary or binary. */
9930 return (name == ansi_opname [(int) INDIRECT_REF]
9931 || name == ansi_opname [(int) ADDR_EXPR]
9932 || name == ansi_opname [(int) NEGATE_EXPR]
9933 || name == ansi_opname[(int) POSTINCREMENT_EXPR]
9934 || name == ansi_opname[(int) POSTDECREMENT_EXPR]
9935 || name == ansi_opname [(int) CONVERT_EXPR]);
9938 /* An operator with this name can only be unary. */
9944 return (name == ansi_opname [(int) TRUTH_NOT_EXPR]
9945 || name == ansi_opname [(int) BIT_NOT_EXPR]
9946 || name == ansi_opname [(int) COMPONENT_REF]
9947 || OPERATOR_TYPENAME_P (name));
9950 /* Do a little sanity-checking on how they declared their operator. */
9953 grok_op_properties (decl, virtualp, friendp)
9955 int virtualp, friendp;
9957 tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
9958 int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
9959 tree name = DECL_NAME (decl);
9961 if (current_class_type == NULL_TREE)
9966 if (name == ansi_opname[(int) MODIFY_EXPR])
9967 TYPE_HAS_ASSIGNMENT (current_class_type) = 1;
9968 else if (name == ansi_opname[(int) CALL_EXPR])
9969 TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1;
9970 else if (name == ansi_opname[(int) ARRAY_REF])
9971 TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1;
9972 else if (name == ansi_opname[(int) COMPONENT_REF]
9973 || name == ansi_opname[(int) MEMBER_REF])
9974 TYPE_OVERLOADS_ARROW (current_class_type) = 1;
9975 else if (name == ansi_opname[(int) NEW_EXPR])
9976 TYPE_GETS_NEW (current_class_type) |= 1;
9977 else if (name == ansi_opname[(int) DELETE_EXPR])
9978 TYPE_GETS_DELETE (current_class_type) |= 1;
9979 else if (name == ansi_opname[(int) VEC_NEW_EXPR])
9980 TYPE_GETS_NEW (current_class_type) |= 2;
9981 else if (name == ansi_opname[(int) VEC_DELETE_EXPR])
9982 TYPE_GETS_DELETE (current_class_type) |= 2;
9985 if (name == ansi_opname[(int) NEW_EXPR]
9986 || name == ansi_opname[(int) VEC_NEW_EXPR])
9988 /* When the compiler encounters the definition of A::operator new, it
9989 doesn't look at the class declaration to find out if it's static. */
9991 revert_static_member_fn (&decl, NULL, NULL);
9993 /* Take care of function decl if we had syntax errors. */
9994 if (argtypes == NULL_TREE)
9996 build_function_type (ptr_type_node,
9997 hash_tree_chain (integer_type_node,
10000 TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
10002 else if (name == ansi_opname[(int) DELETE_EXPR]
10003 || name == ansi_opname[(int) VEC_DELETE_EXPR])
10006 revert_static_member_fn (&decl, NULL, NULL);
10008 if (argtypes == NULL_TREE)
10010 build_function_type (void_type_node,
10011 hash_tree_chain (ptr_type_node,
10015 TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
10017 if (! friendp && name == ansi_opname[(int) VEC_DELETE_EXPR]
10018 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)))
10019 != void_list_node))
10020 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type) = 1;
10025 /* An operator function must either be a non-static member function
10026 or have at least one parameter of a class, a reference to a class,
10027 an enumeration, or a reference to an enumeration. 13.4.0.6 */
10028 if (! methodp || DECL_STATIC_FUNCTION_P (decl))
10030 if (OPERATOR_TYPENAME_P (name)
10031 || name == ansi_opname[(int) CALL_EXPR]
10032 || name == ansi_opname[(int) MODIFY_EXPR]
10033 || name == ansi_opname[(int) COMPONENT_REF]
10034 || name == ansi_opname[(int) ARRAY_REF])
10035 cp_error ("`%D' must be a nonstatic member function", decl);
10040 if (DECL_STATIC_FUNCTION_P (decl))
10041 cp_error ("`%D' must be either a non-static member function or a non-member function", decl);
10044 for (; TREE_VALUE (p) != void_type_node ; p = TREE_CHAIN (p))
10046 tree arg = TREE_VALUE (p);
10047 if (TREE_CODE (arg) == REFERENCE_TYPE)
10048 arg = TREE_TYPE (arg);
10050 /* This lets bad template code slip through. */
10051 if (IS_AGGR_TYPE (arg)
10052 || TREE_CODE (arg) == ENUMERAL_TYPE
10053 || TREE_CODE (arg) == TEMPLATE_TYPE_PARM)
10057 ("`%D' must have an argument of class or enumerated type",
10064 if (name == ansi_opname[(int) CALL_EXPR]
10065 || name == ansi_opname[(int) METHOD_CALL_EXPR])
10066 return; /* no restrictions on args */
10068 if (IDENTIFIER_TYPENAME_P (name) && ! DECL_TEMPLATE_INFO (decl))
10070 tree t = TREE_TYPE (name);
10071 if (TREE_CODE (t) == VOID_TYPE)
10072 pedwarn ("void is not a valid type conversion operator");
10073 else if (! friendp)
10075 int ref = (TREE_CODE (t) == REFERENCE_TYPE);
10078 t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
10080 if (t == current_class_type)
10081 what = "the same type";
10082 /* Don't force t to be complete here. */
10083 else if (IS_AGGR_TYPE (t)
10085 && DERIVED_FROM_P (t, current_class_type))
10086 what = "a base class";
10089 warning ("conversion to %s%s will never use a type conversion operator",
10090 ref ? "a reference to " : "", what);
10094 if (name == ansi_opname[(int) MODIFY_EXPR])
10098 if (list_length (argtypes) != 3 && methodp)
10100 cp_error ("`%D' must take exactly one argument", decl);
10103 parmtype = TREE_VALUE (TREE_CHAIN (argtypes));
10105 if (copy_assignment_arg_p (parmtype, virtualp)
10108 TYPE_HAS_ASSIGN_REF (current_class_type) = 1;
10109 if (TREE_CODE (parmtype) != REFERENCE_TYPE
10110 || TYPE_READONLY (TREE_TYPE (parmtype)))
10111 TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1;
10114 else if (name == ansi_opname[(int) COND_EXPR])
10117 pedwarn ("ANSI C++ prohibits overloading operator ?:");
10118 if (list_length (argtypes) != 4)
10119 cp_error ("`%D' must take exactly three arguments", decl);
10121 else if (ambi_op_p (name))
10123 if (list_length (argtypes) == 2)
10125 else if (list_length (argtypes) == 3)
10127 if ((name == ansi_opname[(int) POSTINCREMENT_EXPR]
10128 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
10129 && ! processing_template_decl
10130 && TREE_VALUE (TREE_CHAIN (argtypes)) != integer_type_node)
10133 cp_error ("postfix `%D' must take `int' as its argument",
10137 ("postfix `%D' must take `int' as its second argument",
10144 cp_error ("`%D' must take either zero or one argument", decl);
10146 cp_error ("`%D' must take either one or two arguments", decl);
10149 else if (unary_op_p (name))
10151 if (list_length (argtypes) != 2)
10154 cp_error ("`%D' must take `void'", decl);
10156 cp_error ("`%D' must take exactly one argument", decl);
10159 else /* if (binary_op_p (name)) */
10161 if (list_length (argtypes) != 3)
10164 cp_error ("`%D' must take exactly one argument", decl);
10166 cp_error ("`%D' must take exactly two arguments", decl);
10172 for (; argtypes != void_list_node ; argtypes = TREE_CHAIN (argtypes))
10173 if (TREE_PURPOSE (argtypes))
10175 TREE_PURPOSE (argtypes) = NULL_TREE;
10176 if (name == ansi_opname[(int) POSTINCREMENT_EXPR]
10177 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
10180 cp_pedwarn ("`%D' cannot have default arguments", decl);
10183 cp_error ("`%D' cannot have default arguments", decl);
10188 /* Get the struct, enum or union (CODE says which) with tag NAME.
10189 Define the tag as a forward-reference if it is not defined.
10191 C++: If a class derivation is given, process it here, and report
10192 an error if multiple derivation declarations are not identical.
10194 If this is a definition, come in through xref_tag and only look in
10195 the current frame for the name (since C++ allows new names in any
10199 xref_tag (code_type_node, name, binfo, globalize)
10200 tree code_type_node;
10204 enum tag_types tag_code;
10205 enum tree_code code;
10207 register tree ref, t;
10208 struct binding_level *b = inner_binding_level;
10211 tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
10216 case signature_type:
10217 code = RECORD_TYPE;
10223 code = ENUMERAL_TYPE;
10226 my_friendly_abort (18);
10229 /* If a cross reference is requested, look up the type
10230 already defined for this tag and return it. */
10231 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
10234 name = TYPE_IDENTIFIER (t);
10238 t = IDENTIFIER_TYPE_VALUE (name);
10239 if (t && TREE_CODE (t) != code && TREE_CODE (t) != TEMPLATE_TYPE_PARM)
10244 if (pedantic && t && TREE_CODE (t) == TEMPLATE_TYPE_PARM)
10246 cp_pedwarn ("redeclaration of template type-parameter `%T'", name);
10247 cp_pedwarn_at (" previously declared here", t);
10249 if (t && TYPE_CONTEXT (t) && got_type)
10253 /* If we know we are defining this tag, only look it up in
10254 this scope and don't try to find it as a type. */
10255 ref = lookup_tag (code, name, b, 1);
10263 ref = lookup_tag (code, name, b, 0);
10267 /* Try finding it as a type declaration. If that wins, use it. */
10268 ref = lookup_name (name, 1);
10269 if (ref && TREE_CODE (ref) == TYPE_DECL
10270 && TREE_CODE (TREE_TYPE (ref)) == code)
10271 ref = TREE_TYPE (ref);
10277 push_obstacks_nochange ();
10281 /* If no such tag is yet defined, create a forward-reference node
10282 and record it as the "definition".
10283 When a real declaration of this type is found,
10284 the forward-reference will be altered into a real type. */
10286 /* In C++, since these migrate into the global scope, we must
10287 build them on the permanent obstack. */
10289 temp = allocation_temporary_p ();
10291 end_temporary_allocation ();
10293 if (code == ENUMERAL_TYPE)
10295 cp_error ("use of enum `%#D' without previous declaration", name);
10297 ref = make_node (ENUMERAL_TYPE);
10299 /* Give the type a default layout like unsigned int
10300 to avoid crashing if it does not get defined. */
10301 TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node);
10302 TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node);
10303 TREE_UNSIGNED (ref) = 1;
10304 TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node);
10305 TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node);
10306 TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node);
10308 /* Enable us to recognize when a type is created in class context.
10309 To do nested classes correctly, this should probably be cleared
10310 out when we leave this classes scope. Currently this in only
10311 done in `start_enum'. */
10313 pushtag (name, ref, globalize);
10317 struct binding_level *old_b = class_binding_level;
10319 ref = make_lang_type (code);
10321 if (tag_code == signature_type)
10323 SET_SIGNATURE (ref);
10324 /* Since a signature type will be turned into the type
10325 of signature tables, it's not only an interface. */
10326 CLASSTYPE_INTERFACE_ONLY (ref) = 0;
10327 SET_CLASSTYPE_INTERFACE_KNOWN (ref);
10328 /* A signature doesn't have a vtable. */
10329 CLASSTYPE_VTABLE_NEEDS_WRITING (ref) = 0;
10332 #ifdef NONNESTED_CLASSES
10333 /* Class types don't nest the way enums do. */
10334 class_binding_level = (struct binding_level *)0;
10336 pushtag (name, ref, globalize);
10337 class_binding_level = old_b;
10342 /* If it no longer looks like a nested type, make sure it's
10343 in global scope. */
10344 if (b == global_binding_level && !class_binding_level
10345 && IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE)
10346 IDENTIFIER_GLOBAL_VALUE (name) = TYPE_NAME (ref);
10350 xref_basetypes (code_type_node, name, ref, binfo);
10354 /* Until the type is defined, tentatively accept whatever
10355 structure tag the user hands us. */
10356 if (TYPE_SIZE (ref) == NULL_TREE
10357 && ref != current_class_type
10358 /* Have to check this, in case we have contradictory tag info. */
10359 && IS_AGGR_TYPE_CODE (TREE_CODE (ref)))
10361 if (tag_code == class_type)
10362 CLASSTYPE_DECLARED_CLASS (ref) = 1;
10363 else if (tag_code == record_type || tag_code == signature_type)
10364 CLASSTYPE_DECLARED_CLASS (ref) = 0;
10373 xref_tag_from_type (old, id, globalize)
10377 tree code_type_node;
10379 if (TREE_CODE (old) == RECORD_TYPE)
10380 code_type_node = (CLASSTYPE_DECLARED_CLASS (old)
10381 ? class_type_node : record_type_node);
10383 code_type_node = union_type_node;
10385 if (id == NULL_TREE)
10386 id = TYPE_IDENTIFIER (old);
10388 return xref_tag (code_type_node, id, NULL_TREE, globalize);
10392 xref_basetypes (code_type_node, name, ref, binfo)
10393 tree code_type_node;
10397 /* In the declaration `A : X, Y, ... Z' we mark all the types
10398 (A, X, Y, ..., Z) so we can check for duplicates. */
10401 enum tag_types tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
10403 if (tag_code == union_type)
10405 cp_error ("derived union `%T' invalid", ref);
10409 len = list_length (binfo);
10410 push_obstacks (TYPE_OBSTACK (ref), TYPE_OBSTACK (ref));
10412 SET_CLASSTYPE_MARKED (ref);
10413 BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len);
10415 for (i = 0; binfo; binfo = TREE_CHAIN (binfo))
10417 /* The base of a derived struct is public by default. */
10419 = (TREE_PURPOSE (binfo) == access_public_node
10420 || TREE_PURPOSE (binfo) == access_public_virtual_node
10421 || (tag_code != class_type
10422 && (TREE_PURPOSE (binfo) == access_default_node
10423 || TREE_PURPOSE (binfo) == access_default_virtual_node)));
10424 int via_protected = TREE_PURPOSE (binfo) == access_protected_node;
10426 = (TREE_PURPOSE (binfo) == access_private_virtual_node
10427 || TREE_PURPOSE (binfo) == access_public_virtual_node
10428 || TREE_PURPOSE (binfo) == access_default_virtual_node);
10429 tree basetype = TREE_VALUE (binfo);
10432 GNU_xref_hier (IDENTIFIER_POINTER (name),
10433 IDENTIFIER_POINTER (TREE_VALUE (binfo)),
10434 via_public, via_virtual, 0);
10436 if (basetype && TREE_CODE (basetype) == TYPE_DECL)
10437 basetype = TREE_TYPE (basetype);
10439 || (TREE_CODE (basetype) != RECORD_TYPE
10440 && TREE_CODE (basetype) != TYPENAME_TYPE
10441 && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM))
10443 cp_error ("base type `%T' fails to be a struct or class type",
10444 TREE_VALUE (binfo));
10448 /* This code replaces similar code in layout_basetypes. */
10449 else if (TREE_CODE (basetype) != TEMPLATE_TYPE_PARM
10450 && TREE_CODE (basetype) != TYPENAME_TYPE
10451 && TYPE_SIZE (complete_type (basetype)) == NULL_TREE)
10453 cp_error ("base class `%T' has incomplete type", basetype);
10459 if (CLASSTYPE_MARKED (basetype))
10461 if (basetype == ref)
10462 cp_error ("recursive type `%T' undefined", basetype);
10464 cp_error ("duplicate base type `%T' invalid", basetype);
10468 /* Note that the BINFO records which describe individual
10469 inheritances are *not* shared in the lattice! They
10470 cannot be shared because a given baseclass may be
10471 inherited with different `accessibility' by different
10472 derived classes. (Each BINFO record describing an
10473 individual inheritance contains flags which say what
10474 the `accessibility' of that particular inheritance is.) */
10476 base_binfo = make_binfo (integer_zero_node, basetype,
10477 TYPE_BINFO_VTABLE (basetype),
10478 TYPE_BINFO_VIRTUALS (basetype), NULL_TREE);
10480 TREE_VEC_ELT (binfos, i) = base_binfo;
10481 TREE_VIA_PUBLIC (base_binfo) = via_public;
10482 TREE_VIA_PROTECTED (base_binfo) = via_protected;
10483 TREE_VIA_VIRTUAL (base_binfo) = via_virtual;
10484 BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref);
10486 SET_CLASSTYPE_MARKED (basetype);
10488 /* We are free to modify these bits because they are meaningless
10489 at top level, and BASETYPE is a top-level type. */
10490 if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype))
10492 TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1;
10493 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
10496 TYPE_OVERLOADS_METHOD_CALL_EXPR (ref) |= TYPE_OVERLOADS_METHOD_CALL_EXPR (basetype);
10497 TYPE_GETS_NEW (ref) |= TYPE_GETS_NEW (basetype);
10498 TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
10499 CLASSTYPE_LOCAL_TYPEDECLS (ref) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype);
10504 TREE_VEC_LENGTH (binfos) = i;
10506 BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE;
10509 TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1;
10511 TYPE_USES_MULTIPLE_INHERITANCE (ref)
10512 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos, 0)));
10513 if (TYPE_USES_MULTIPLE_INHERITANCE (ref))
10514 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
10516 /* Unmark all the types. */
10518 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i)));
10519 CLEAR_CLASSTYPE_MARKED (ref);
10525 static tree current_local_enum = NULL_TREE;
10527 /* Begin compiling the definition of an enumeration type.
10528 NAME is its name (or null if anonymous).
10529 Returns the type object, as yet incomplete.
10530 Also records info about it so that build_enumerator
10531 may be used to declare the individual values as they are read. */
10537 register tree enumtype = NULL_TREE;
10538 struct binding_level *b = inner_binding_level;
10540 /* If this is the real definition for a previous forward reference,
10541 fill in the contents in the same object that used to be the
10542 forward reference. */
10544 if (name != NULL_TREE)
10545 enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1);
10547 if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE)
10548 cp_error ("multiple definition of `%#T'", enumtype);
10551 enumtype = make_node (ENUMERAL_TYPE);
10552 pushtag (name, enumtype, 0);
10555 if (b->pseudo_global)
10556 cp_error ("template declaration of `%#T'", enumtype);
10558 if (current_class_type)
10559 TREE_ADDRESSABLE (b->tags) = 1;
10561 current_local_enum = NULL_TREE;
10563 /* We don't copy this value because build_enumerator needs to do it. */
10564 enum_next_value = integer_zero_node;
10567 GNU_xref_decl (current_function_decl, enumtype);
10571 /* After processing and defining all the values of an enumeration type,
10572 install their decls in the enumeration type and finish it off.
10573 ENUMTYPE is the type object and VALUES a list of name-value pairs.
10574 Returns ENUMTYPE. */
10577 finish_enum (enumtype, values)
10578 register tree enumtype, values;
10580 register tree minnode, maxnode;
10581 /* Calculate the maximum value of any enumerator in this type. */
10585 register tree pair;
10586 register tree value = DECL_INITIAL (TREE_VALUE (values));
10588 if (! processing_template_decl)
10590 /* Speed up the main loop by performing some precalculations */
10591 TREE_TYPE (TREE_VALUE (values)) = enumtype;
10592 TREE_TYPE (value) = enumtype;
10593 minnode = maxnode = value;
10595 TREE_VALUE (values) = value;
10597 for (pair = TREE_CHAIN (values); pair; pair = TREE_CHAIN (pair))
10599 value = DECL_INITIAL (TREE_VALUE (pair));
10600 if (! processing_template_decl)
10602 TREE_TYPE (TREE_VALUE (pair)) = enumtype;
10603 TREE_TYPE (value) = enumtype;
10604 if (tree_int_cst_lt (maxnode, value))
10606 else if (tree_int_cst_lt (value, minnode))
10609 TREE_VALUE (pair) = value;
10613 maxnode = minnode = integer_zero_node;
10615 TYPE_VALUES (enumtype) = nreverse (values);
10617 if (processing_template_decl)
10621 int unsignedp = tree_int_cst_sgn (minnode) >= 0;
10622 int lowprec = min_precision (minnode, unsignedp);
10623 int highprec = min_precision (maxnode, unsignedp);
10624 int precision = MAX (lowprec, highprec);
10626 TYPE_SIZE (enumtype) = NULL_TREE;
10628 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
10630 TYPE_PRECISION (enumtype) = precision;
10632 fixup_unsigned_type (enumtype);
10634 fixup_signed_type (enumtype);
10636 if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node)))
10637 /* Use the width of the narrowest normal C type which is wide enough. */
10638 TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size
10641 TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node);
10643 TYPE_SIZE (enumtype) = 0;
10644 layout_type (enumtype);
10650 /* Fix up all variant types of this enum type. */
10651 for (tem = TYPE_MAIN_VARIANT (enumtype); tem;
10652 tem = TYPE_NEXT_VARIANT (tem))
10654 TYPE_VALUES (tem) = TYPE_VALUES (enumtype);
10655 TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype);
10656 TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype);
10657 TYPE_SIZE (tem) = TYPE_SIZE (enumtype);
10658 TYPE_MODE (tem) = TYPE_MODE (enumtype);
10659 TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype);
10660 TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype);
10661 TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype);
10665 /* Finish debugging output for this type. */
10666 rest_of_type_compilation (enumtype, global_bindings_p ());
10671 /* Build and install a CONST_DECL for one value of the
10672 current enumeration type (one that was begun with start_enum).
10673 Return a tree-list containing the name and its value.
10674 Assignment of sequential values by default is handled here. */
10677 build_enumerator (name, value)
10682 /* Remove no-op casts from the value. */
10684 STRIP_TYPE_NOPS (value);
10686 if (! processing_template_decl)
10688 /* Validate and default VALUE. */
10689 if (value != NULL_TREE)
10691 if (TREE_READONLY_DECL_P (value))
10692 value = decl_constant_value (value);
10694 if (TREE_CODE (value) == INTEGER_CST)
10696 value = default_conversion (value);
10697 constant_expression_warning (value);
10701 cp_error ("enumerator value for `%D' not integer constant", name);
10706 /* Default based on previous value. */
10707 if (value == NULL_TREE && ! processing_template_decl)
10709 value = enum_next_value;
10711 cp_error ("overflow in enumeration values at `%D'", name);
10714 /* Remove no-op casts from the value. */
10716 STRIP_TYPE_NOPS (value);
10718 /* We have to always copy here; not all INTEGER_CSTs are unshared,
10719 and there's no wedding ring. Look at size_int()...*/
10720 value = copy_node (value);
10721 TREE_TYPE (value) = integer_type_node;
10724 /* C++ associates enums with global, function, or class declarations. */
10726 decl = current_scope ();
10727 if (decl && decl == current_class_type)
10729 /* This enum declaration is local to the class, so we must put
10730 it in that class's list of decls. */
10731 decl = build_lang_field_decl (CONST_DECL, name, integer_type_node);
10732 DECL_INITIAL (decl) = value;
10733 TREE_READONLY (decl) = 1;
10734 pushdecl_class_level (decl);
10735 TREE_CHAIN (decl) = current_local_enum;
10736 current_local_enum = decl;
10740 /* It's a global enum, or it's local to a function. (Note local to
10741 a function could mean local to a class method. */
10742 decl = build_decl (CONST_DECL, name, integer_type_node);
10743 DECL_INITIAL (decl) = value;
10746 GNU_xref_decl (current_function_decl, decl);
10749 if (! processing_template_decl)
10751 /* Set basis for default for next value. */
10752 enum_next_value = build_binary_op_nodefault (PLUS_EXPR, value,
10753 integer_one_node, PLUS_EXPR);
10754 enum_overflow = tree_int_cst_lt (enum_next_value, value);
10757 result = saveable_tree_cons (name, decl, NULL_TREE);
10762 grok_enum_decls (type, decl)
10765 tree d = current_local_enum;
10767 if (d == NULL_TREE)
10772 TREE_TYPE (d) = type;
10773 if (TREE_CHAIN (d) == NULL_TREE)
10775 TREE_CHAIN (d) = decl;
10778 d = TREE_CHAIN (d);
10781 decl = current_local_enum;
10782 current_local_enum = NULL_TREE;
10787 static int function_depth;
10789 /* Create the FUNCTION_DECL for a function definition.
10790 DECLSPECS and DECLARATOR are the parts of the declaration;
10791 they describe the function's name and the type it returns,
10792 but twisted together in a fashion that parallels the syntax of C.
10794 This function creates a binding context for the function body
10795 as well as setting up the FUNCTION_DECL in current_function_decl.
10797 Returns 1 on success. If the DECLARATOR is not suitable for a function
10798 (it defines a datum instead), we return 0, which tells
10799 yyparse to report a parse error.
10801 For C++, we must first check whether that datum makes any sense.
10802 For example, "class A local_a(1,2);" means that variable local_a
10803 is an aggregate of type A, which should have a constructor
10804 applied to it with the argument list [1, 2].
10806 @@ There is currently no way to retrieve the storage
10807 @@ allocated to FUNCTION (or all of its parms) if we return
10808 @@ something we had previously. */
10811 start_function (declspecs, declarator, attrs, pre_parsed_p)
10812 tree declspecs, declarator, attrs;
10816 tree ctype = NULL_TREE;
10819 extern int have_extern_spec;
10820 extern int used_extern_spec;
10821 int doing_friend = 0;
10823 /* Sanity check. */
10824 my_friendly_assert (TREE_VALUE (void_list_node) == void_type_node, 160);
10825 my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161);
10827 /* Assume, until we see it does. */
10828 current_function_returns_value = 0;
10829 current_function_returns_null = 0;
10830 warn_about_return_type = 0;
10832 shadowed_labels = 0;
10833 current_function_assigns_this = 0;
10834 current_function_just_assigned_this = 0;
10835 current_function_parms_stored = 0;
10836 original_result_rtx = NULL_RTX;
10837 base_init_expr = NULL_TREE;
10838 current_base_init_list = NULL_TREE;
10839 current_member_init_list = NULL_TREE;
10840 ctor_label = dtor_label = NULL_TREE;
10842 clear_temp_name ();
10844 /* This should only be done once on the top most decl. */
10845 if (have_extern_spec && !used_extern_spec)
10847 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), declspecs);
10848 used_extern_spec = 1;
10853 decl1 = declarator;
10855 if (! DECL_ARGUMENTS (decl1)
10856 && !DECL_STATIC_FUNCTION_P (decl1)
10857 && DECL_CONTEXT (decl1)
10858 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1))
10859 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1))))
10861 cp_error ("redeclaration of `%#D'", decl1);
10862 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)))
10863 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)));
10864 else if (IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1)))
10865 cp_error_at ("previous declaration here", IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1)));
10868 fntype = TREE_TYPE (decl1);
10869 if (TREE_CODE (fntype) == METHOD_TYPE)
10870 ctype = TYPE_METHOD_BASETYPE (fntype);
10872 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
10873 class is in the (lexical) scope of the class in which it is
10875 if (!ctype && DECL_FRIEND_P (decl1))
10877 ctype = DECL_CLASS_CONTEXT (decl1);
10879 /* CTYPE could be null here if we're dealing with a template;
10880 for example, `inline friend float foo()' inside a template
10881 will have no CTYPE set. */
10882 if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
10888 /* In a fcn definition, arg types must be complete. */
10889 require_complete_types_for_parms (DECL_ARGUMENTS (decl1));
10891 /* In case some arg types were completed since the declaration was
10892 parsed, fix up the decls. */
10894 tree t = DECL_ARGUMENTS (decl1);
10895 for (; t; t = TREE_CHAIN (t))
10896 layout_decl (t, 0);
10899 last_function_parms = DECL_ARGUMENTS (decl1);
10900 last_function_parm_tags = NULL_TREE;
10904 decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL_TREE);
10905 /* If the declarator is not suitable for a function definition,
10906 cause a syntax error. */
10907 if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0;
10909 fntype = TREE_TYPE (decl1);
10911 restype = TREE_TYPE (fntype);
10912 if (IS_AGGR_TYPE (restype) && ! TYPE_PTRMEMFUNC_P (restype)
10913 && ! CLASSTYPE_GOT_SEMICOLON (restype))
10915 cp_error ("semicolon missing after declaration of `%#T'", restype);
10916 shadow_tag (build_tree_list (NULL_TREE, restype));
10917 CLASSTYPE_GOT_SEMICOLON (restype) = 1;
10918 if (TREE_CODE (fntype) == FUNCTION_TYPE)
10919 fntype = build_function_type (integer_type_node,
10920 TYPE_ARG_TYPES (fntype));
10922 fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)),
10924 TYPE_ARG_TYPES (fntype));
10925 TREE_TYPE (decl1) = fntype;
10928 if (TREE_CODE (fntype) == METHOD_TYPE)
10929 ctype = TYPE_METHOD_BASETYPE (fntype);
10930 else if (IDENTIFIER_LENGTH (DECL_NAME (decl1)) == 4
10931 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (decl1)), "main")
10932 && DECL_CONTEXT (decl1) == NULL_TREE)
10934 /* If this doesn't return integer_type, complain. */
10935 if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node)
10937 if (pedantic || warn_return_type)
10938 pedwarn ("return type for `main' changed to `int'");
10939 TREE_TYPE (decl1) = fntype = default_function_type;
10941 warn_about_return_type = 0;
10945 /* Warn if function was previously implicitly declared
10946 (but not if we warned then). */
10947 if (! warn_implicit
10948 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE)
10949 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)));
10951 current_function_decl = decl1;
10952 /* Save the parm names or decls from this function's declarator
10953 where store_parm_decls will find them. */
10954 current_function_parms = last_function_parms;
10955 current_function_parm_tags = last_function_parm_tags;
10957 announce_function (decl1);
10959 if (! processing_template_decl)
10961 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype))) == NULL_TREE)
10963 cp_error ("return-type `%#T' is an incomplete type",
10964 TREE_TYPE (fntype));
10966 /* Make it return void instead, but don't change the
10967 type of the DECL_RESULT, in case we have a named return value. */
10970 = build_cplus_method_type (build_type_variant (ctype,
10971 TREE_READONLY (decl1),
10972 TREE_SIDE_EFFECTS (decl1)),
10974 FUNCTION_ARG_CHAIN (decl1));
10977 = build_function_type (void_type_node,
10978 TYPE_ARG_TYPES (TREE_TYPE (decl1)));
10979 DECL_RESULT (decl1)
10980 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype)));
10981 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (TREE_TYPE (fntype));
10982 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (TREE_TYPE (fntype));
10985 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype))
10986 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype)))
10987 abstract_virtuals_error (decl1, TREE_TYPE (fntype));
10990 if (warn_about_return_type)
10991 warning ("return-type defaults to `int'");
10993 /* Make the init_value nonzero so pushdecl knows this is not tentative.
10994 error_mark_node is replaced below (in poplevel) with the BLOCK. */
10995 DECL_INITIAL (decl1) = error_mark_node;
10997 /* This function exists in static storage.
10998 (This does not mean `static' in the C sense!) */
10999 TREE_STATIC (decl1) = 1;
11001 /* Record the decl so that the function name is defined.
11002 If we already have a decl for this name, and it is a FUNCTION_DECL,
11003 use the old decl. */
11005 if (processing_template_decl)
11006 push_template_decl (decl1);
11007 else if (pre_parsed_p == 0)
11009 decl1 = pushdecl (decl1);
11010 DECL_MAIN_VARIANT (decl1) = decl1;
11011 fntype = TREE_TYPE (decl1);
11014 current_function_decl = decl1;
11016 if (DECL_INTERFACE_KNOWN (decl1))
11018 if (DECL_NOT_REALLY_EXTERN (decl1))
11019 DECL_EXTERNAL (decl1) = 0;
11021 /* If this function belongs to an interface, it is public.
11022 If it belongs to someone else's interface, it is also external.
11023 It doesn't matter whether it's inline or not. */
11024 else if (interface_unknown == 0
11025 && (! DECL_TEMPLATE_INSTANTIATION (decl1)
11026 || flag_alt_external_templates))
11028 if (DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1)
11029 || processing_template_decl)
11030 DECL_EXTERNAL (decl1)
11032 || (DECL_THIS_INLINE (decl1) && ! flag_implement_inlines));
11035 DECL_EXTERNAL (decl1) = 0;
11036 if (DECL_C_STATIC (decl1))
11037 TREE_PUBLIC (decl1) = 0;
11039 DECL_NOT_REALLY_EXTERN (decl1) = 0;
11040 DECL_INTERFACE_KNOWN (decl1) = 1;
11044 /* This is a definition, not a reference.
11045 So clear DECL_EXTERNAL. */
11046 DECL_EXTERNAL (decl1) = 0;
11048 if ((DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1))
11049 && ! DECL_INTERFACE_KNOWN (decl1)
11050 /* Don't try to defer nested functions for now. */
11051 && ! hack_decl_function_context (decl1))
11052 DECL_DEFER_OUTPUT (decl1) = 1;
11055 DECL_INTERFACE_KNOWN (decl1) = 1;
11056 if (DECL_C_STATIC (decl1))
11057 TREE_PUBLIC (decl1) = 0;
11061 if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1))
11063 if (TREE_CODE (fntype) == METHOD_TYPE)
11064 TREE_TYPE (decl1) = fntype
11065 = build_function_type (TREE_TYPE (fntype),
11066 TREE_CHAIN (TYPE_ARG_TYPES (fntype)));
11067 current_function_parms = TREE_CHAIN (current_function_parms);
11068 DECL_ARGUMENTS (decl1) = current_function_parms;
11071 restype = TREE_TYPE (fntype);
11075 push_nested_class (ctype, 1);
11077 /* If we're compiling a friend function, neither of the variables
11078 current_class_ptr nor current_class_type will have values. */
11079 if (! doing_friend)
11081 /* We know that this was set up by `grokclassfn'.
11082 We do not wait until `store_parm_decls', since evil
11083 parse errors may never get us to that point. Here
11084 we keep the consistency between `current_class_type'
11085 and `current_class_ptr'. */
11086 tree t = current_function_parms;
11088 my_friendly_assert (t != NULL_TREE
11089 && TREE_CODE (t) == PARM_DECL, 162);
11091 if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE)
11093 int i = suspend_momentary ();
11095 /* Fool build_indirect_ref. */
11096 current_class_ptr = NULL_TREE;
11097 current_class_ref = build_indirect_ref (t, NULL_PTR);
11098 current_class_ptr = t;
11099 resume_momentary (i);
11102 /* We're having a signature pointer here. */
11103 current_class_ref = current_class_ptr = t;
11109 if (DECL_STATIC_FUNCTION_P (decl1))
11110 push_nested_class (DECL_CONTEXT (decl1), 2);
11112 push_memoized_context (0, 1);
11113 current_class_ptr = current_class_ref = NULL_TREE;
11117 current_binding_level->parm_flag = 1;
11119 GNU_xref_function (decl1, current_function_parms);
11122 cplus_decl_attributes (decl1, NULL_TREE, attrs);
11123 make_function_rtl (decl1);
11125 /* Promote the value to int before returning it. */
11126 if (C_PROMOTING_INTEGER_TYPE_P (restype))
11127 restype = type_promotes_to (restype);
11129 /* If this fcn was already referenced via a block-scope `extern' decl
11130 (or an implicit decl), propagate certain information about the usage. */
11131 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1)))
11132 TREE_ADDRESSABLE (decl1) = 1;
11134 if (DECL_RESULT (decl1) == NULL_TREE)
11136 DECL_RESULT (decl1)
11137 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype));
11138 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (restype);
11139 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (restype);
11142 /* Allocate further tree nodes temporarily during compilation
11143 of this function only. Tiemann moved up here from bottom of fn. */
11144 temporary_allocation ();
11146 if (processing_template_decl)
11148 extern tree last_tree;
11149 ++minimal_parse_mode;
11150 last_tree = DECL_SAVED_TREE (decl1)
11151 = build_nt (EXPR_STMT, void_zero_node);
11156 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1))
11157 && DECL_LANGUAGE (decl1) == lang_cplusplus)
11159 dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11160 ctor_label = NULL_TREE;
11164 dtor_label = NULL_TREE;
11165 if (DECL_CONSTRUCTOR_P (decl1))
11166 ctor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11173 store_after_parms (insns)
11178 for (x = get_insns (); x; x = next_insn (x))
11180 if (GET_CODE (x) == NOTE && NOTE_LINE_NUMBER (x) == NOTE_INSN_FUNCTION_BEG)
11182 emit_insns_after (insns, x);
11187 /* This doesn't work, because the inline output routine doesn't reset
11188 last_parm_insn correctly for get_first_nonparm_insn () to work. */
11190 last_parm_insn = get_first_nonparm_insn ();
11191 if (last_parm_insn == NULL_RTX)
11192 emit_insns (insns);
11194 emit_insns_before (insns, last_parm_insn);
11199 expand_start_early_try_stmts ()
11203 expand_start_try_stmts ();
11204 insns = get_insns ();
11207 emit_insns_after (insns, get_insns ());
11209 store_after_parms (insns);
11213 /* Store the parameter declarations into the current function declaration.
11214 This is called after parsing the parameter declarations, before
11215 digesting the body of the function.
11217 Also install to binding contour return value identifier, if any. */
11220 store_parm_decls ()
11222 register tree fndecl = current_function_decl;
11223 register tree parm;
11224 int parms_have_cleanups = 0;
11226 /* This is either a chain of PARM_DECLs (when a prototype is used). */
11227 tree specparms = current_function_parms;
11229 /* This is a list of types declared among parms in a prototype. */
11230 tree parmtags = current_function_parm_tags;
11232 /* This is a chain of any other decls that came in among the parm
11233 declarations. If a parm is declared with enum {foo, bar} x;
11234 then CONST_DECLs for foo and bar are put here. */
11235 tree nonparms = NULL_TREE;
11237 if (toplevel_bindings_p ())
11238 fatal ("parse errors have confused me too much");
11240 /* Initialize RTL machinery. */
11241 init_function_start (fndecl, input_filename, lineno);
11243 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
11244 declare_function_name ();
11246 /* Create a binding level for the parms. */
11247 expand_start_bindings (0);
11249 if (specparms != NULL_TREE)
11251 /* This case is when the function was defined with an ANSI prototype.
11252 The parms already have decls, so we need not do anything here
11253 except record them as in effect
11254 and complain if any redundant old-style parm decls were written. */
11256 register tree next;
11258 /* Must clear this because it might contain TYPE_DECLs declared
11260 storedecls (NULL_TREE);
11262 for (parm = nreverse (specparms); parm; parm = next)
11264 next = TREE_CHAIN (parm);
11265 if (TREE_CODE (parm) == PARM_DECL)
11268 if (DECL_NAME (parm) == NULL_TREE)
11272 else if (TYPE_MAIN_VARIANT (TREE_TYPE (parm)) == void_type_node)
11273 cp_error ("parameter `%D' declared void", parm);
11276 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
11277 A parameter is assumed not to have any side effects.
11278 If this should change for any reason, then this
11279 will have to wrap the bashed reference type in a save_expr.
11281 Also, if the parameter type is declared to be an X
11282 and there is an X(X&) constructor, we cannot lay it
11283 into the stack (any more), so we make this parameter
11284 look like it is really of reference type. Functions
11285 which pass parameters to this function will know to
11286 create a temporary in their frame, and pass a reference
11289 if (TREE_CODE (TREE_TYPE (parm)) == REFERENCE_TYPE
11290 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm))))
11291 SET_DECL_REFERENCE_SLOT (parm, convert_from_reference (parm));
11295 if (! processing_template_decl
11296 && (cleanup = maybe_build_cleanup (parm), cleanup))
11298 expand_decl (parm);
11299 if (! expand_decl_cleanup (parm, cleanup))
11300 cp_error ("parser lost in parsing declaration of `%D'",
11302 parms_have_cleanups = 1;
11307 /* If we find an enum constant or a type tag,
11308 put it aside for the moment. */
11309 TREE_CHAIN (parm) = NULL_TREE;
11310 nonparms = chainon (nonparms, parm);
11314 /* Get the decls in their original chain order
11315 and record in the function. This is all and only the
11316 PARM_DECLs that were pushed into scope by the loop above. */
11317 DECL_ARGUMENTS (fndecl) = getdecls ();
11319 storetags (chainon (parmtags, gettags ()));
11322 DECL_ARGUMENTS (fndecl) = NULL_TREE;
11324 /* Now store the final chain of decls for the arguments
11325 as the decl-chain of the current lexical scope.
11326 Put the enumerators in as well, at the front so that
11327 DECL_ARGUMENTS is not modified. */
11329 storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl)));
11331 /* Initialize the RTL code for the function. */
11332 DECL_SAVED_INSNS (fndecl) = NULL_RTX;
11333 if (! processing_template_decl)
11334 expand_function_start (fndecl, parms_have_cleanups);
11336 /* Create a binding contour which can be used to catch
11337 cleanup-generated temporaries. Also, if the return value needs or
11338 has initialization, deal with that now. */
11339 if (parms_have_cleanups)
11342 expand_start_bindings (0);
11345 current_function_parms_stored = 1;
11347 /* If this function is `main', emit a call to `__main'
11348 to run global initializers, etc. */
11349 if (DECL_NAME (fndecl)
11350 && IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4
11351 && strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main") == 0
11352 && DECL_CONTEXT (fndecl) == NULL_TREE)
11354 expand_main_function ();
11357 /* Take care of exception handling things. */
11358 if (! processing_template_decl && flag_exceptions)
11364 /* Mark the start of a stack unwinder if we need one. */
11365 start_eh_unwinder ();
11369 /* Do the starting of the exception specifications, if we have any. */
11370 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
11371 expand_start_eh_spec ();
11374 insns = get_insns ();
11378 store_after_parms (insns);
11380 last_dtor_insn = get_last_insn ();
11383 /* Bind a name and initialization to the return value of
11384 the current function. */
11387 store_return_init (return_id, init)
11388 tree return_id, init;
11390 tree decl = DECL_RESULT (current_function_decl);
11393 /* Give this error as many times as there are occurrences,
11394 so that users can use Emacs compilation buffers to find
11395 and fix all such places. */
11396 pedwarn ("ANSI C++ does not permit named return values");
11398 if (return_id != NULL_TREE)
11400 if (DECL_NAME (decl) == NULL_TREE)
11402 DECL_NAME (decl) = return_id;
11403 DECL_ASSEMBLER_NAME (decl) = return_id;
11406 cp_error ("return identifier `%D' already in place", decl);
11409 /* Can't let this happen for constructors. */
11410 if (DECL_CONSTRUCTOR_P (current_function_decl))
11412 error ("can't redefine default return value for constructors");
11416 /* If we have a named return value, put that in our scope as well. */
11417 if (DECL_NAME (decl) != NULL_TREE)
11419 /* If this named return value comes in a register,
11420 put it in a pseudo-register. */
11421 if (DECL_REGISTER (decl))
11423 original_result_rtx = DECL_RTL (decl);
11424 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
11427 /* Let `cp_finish_decl' know that this initializer is ok. */
11428 DECL_INITIAL (decl) = init;
11431 if (minimal_parse_mode)
11432 add_tree (build_min_nt (RETURN_INIT, return_id,
11433 copy_to_permanent (init)));
11435 cp_finish_decl (decl, init, NULL_TREE, 0, LOOKUP_ONLYCONVERTING);
11440 /* Finish up a function declaration and compile that function
11441 all the way to assembler language output. The free the storage
11442 for the function definition.
11444 This is called after parsing the body of the function definition.
11445 LINENO is the current line number.
11447 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
11448 (and expand_end_bindings) must be made to take care of the binding
11449 contour for the base initializers. This is only relevant for
11452 NESTED is nonzero if we were in the middle of compiling another function
11453 when we started on this one. */
11456 finish_function (lineno, call_poplevel, nested)
11461 register tree fndecl = current_function_decl;
11462 tree fntype, ctype = NULL_TREE;
11463 rtx last_parm_insn, insns;
11464 /* Label to use if this function is supposed to return a value. */
11465 tree no_return_label = NULL_TREE;
11466 tree decls = NULL_TREE;
11468 /* When we get some parse errors, we can end up without a
11469 current_function_decl, so cope. */
11470 if (fndecl == NULL_TREE)
11473 if (! nested && function_depth > 1)
11476 fntype = TREE_TYPE (fndecl);
11478 /* TREE_READONLY (fndecl) = 1;
11479 This caused &foo to be of type ptr-to-const-function
11480 which then got a warning when stored in a ptr-to-function variable. */
11482 /* This happens on strange parse errors. */
11483 if (! current_function_parms_stored)
11486 store_parm_decls ();
11489 if (processing_template_decl)
11491 if (DECL_CONSTRUCTOR_P (fndecl) && call_poplevel)
11493 decls = getdecls ();
11494 expand_end_bindings (decls, decls != NULL_TREE, 0);
11495 poplevel (decls != NULL_TREE, 0, 0);
11500 if (write_symbols != NO_DEBUG /*&& TREE_CODE (fntype) != METHOD_TYPE*/)
11502 tree ttype = target_type (fntype);
11505 if (IS_AGGR_TYPE (ttype))
11506 /* Let debugger know it should output info for this type. */
11507 note_debug_info_needed (ttype);
11509 for (parmdecl = DECL_ARGUMENTS (fndecl); parmdecl; parmdecl = TREE_CHAIN (parmdecl))
11511 ttype = target_type (TREE_TYPE (parmdecl));
11512 if (IS_AGGR_TYPE (ttype))
11513 /* Let debugger know it should output info for this type. */
11514 note_debug_info_needed (ttype);
11518 /* Clean house because we will need to reorder insns here. */
11519 do_pending_stack_adjust ();
11523 tree binfo = TYPE_BINFO (current_class_type);
11524 tree cond = integer_one_node;
11526 tree in_charge_node = lookup_name (in_charge_identifier, 0);
11528 int ok_to_optimize_dtor = 0;
11529 int empty_dtor = get_last_insn () == last_dtor_insn;
11531 if (current_function_assigns_this)
11532 cond = build (NE_EXPR, boolean_type_node,
11533 current_class_ptr, integer_zero_node);
11536 int n_baseclasses = CLASSTYPE_N_BASECLASSES (current_class_type);
11538 /* If this destructor is empty, then we don't need to check
11539 whether `this' is NULL in some cases. */
11540 if ((flag_this_is_variable & 1) == 0)
11541 ok_to_optimize_dtor = 1;
11542 else if (empty_dtor)
11543 ok_to_optimize_dtor
11544 = (n_baseclasses == 0
11545 || (n_baseclasses == 1
11546 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type, 0))));
11549 /* These initializations might go inline. Protect
11550 the binding level of the parms. */
11552 expand_start_bindings (0);
11554 if (current_function_assigns_this)
11556 current_function_assigns_this = 0;
11557 current_function_just_assigned_this = 0;
11560 /* Generate the code to call destructor on base class.
11561 If this destructor belongs to a class with virtual
11562 functions, then set the virtual function table
11563 pointer to represent the type of our base class. */
11565 /* This side-effect makes call to `build_delete' generate the
11566 code we have to have at the end of this destructor. */
11567 TYPE_HAS_DESTRUCTOR (current_class_type) = 0;
11569 /* These are two cases where we cannot delegate deletion. */
11570 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)
11571 || TYPE_GETS_REG_DELETE (current_class_type))
11572 exprstmt = build_delete (current_class_type, current_class_ref, integer_zero_node,
11573 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
11575 exprstmt = build_delete (current_class_type, current_class_ref, in_charge_node,
11576 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
11578 /* If we did not assign to this, then `this' is non-zero at
11579 the end of a destructor. As a special optimization, don't
11580 emit test if this is an empty destructor. If it does nothing,
11581 it does nothing. If it calls a base destructor, the base
11582 destructor will perform the test. */
11584 if (exprstmt != error_mark_node
11585 && (TREE_CODE (exprstmt) != NOP_EXPR
11586 || TREE_OPERAND (exprstmt, 0) != integer_zero_node
11587 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)))
11589 expand_label (dtor_label);
11590 if (cond != integer_one_node)
11591 expand_start_cond (cond, 0);
11592 if (exprstmt != void_zero_node)
11593 /* Don't call `expand_expr_stmt' if we're not going to do
11594 anything, since -Wall will give a diagnostic. */
11595 expand_expr_stmt (exprstmt);
11597 /* Run destructor on all virtual baseclasses. */
11598 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11600 tree vbases = nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type)));
11601 expand_start_cond (build (BIT_AND_EXPR, integer_type_node,
11602 in_charge_node, integer_two_node), 0);
11605 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases)))
11607 tree ptr = convert_pointer_to_vbase (BINFO_TYPE (vbases), current_class_ptr);
11610 (build_pointer_type (BINFO_TYPE (vbases)),
11611 ptr, integer_zero_node,
11612 (LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR
11613 |LOOKUP_HAS_IN_CHARGE|LOOKUP_NORMAL),
11616 vbases = TREE_CHAIN (vbases);
11618 expand_end_cond ();
11621 do_pending_stack_adjust ();
11622 if (cond != integer_one_node)
11623 expand_end_cond ();
11626 TYPE_HAS_DESTRUCTOR (current_class_type) = 1;
11628 virtual_size = c_sizeof (current_class_type);
11630 /* At the end, call delete if that's what's requested. */
11631 if (TYPE_GETS_REG_DELETE (current_class_type))
11632 /* This NOP_EXPR means we are in a static call context. */
11635 (build_indirect_ref
11636 (build1 (NOP_EXPR, build_pointer_type (current_class_type),
11639 ansi_opname[(int) DELETE_EXPR],
11640 tree_cons (NULL_TREE, current_class_ptr,
11641 build_tree_list (NULL_TREE, virtual_size)),
11642 NULL_TREE, LOOKUP_NORMAL);
11643 else if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11644 exprstmt = build_x_delete (ptr_type_node, current_class_ptr, 0,
11647 exprstmt = NULL_TREE;
11651 cond = build (BIT_AND_EXPR, integer_type_node,
11652 in_charge_node, integer_one_node);
11653 expand_start_cond (cond, 0);
11654 expand_expr_stmt (exprstmt);
11655 expand_end_cond ();
11658 /* End of destructor. */
11659 expand_end_bindings (NULL_TREE, getdecls () != NULL_TREE, 0);
11660 poplevel (2, 0, 0); /* XXX change to 1 */
11662 /* Back to the top of destructor. */
11663 /* Dont execute destructor code if `this' is NULL. */
11667 /* If the dtor is empty, and we know there is not possible way we
11668 could use any vtable entries, before they are possibly set by
11669 a base class dtor, we don't have to setup the vtables, as we
11670 know that any base class dtoring will set up any vtables it
11671 needs. We avoid MI, because one base class dtor can do a
11672 virtual dispatch to an overridden function that would need to
11673 have a non-related vtable set up, we cannot avoid setting up
11674 vtables in that case. We could change this to see if there is
11675 just one vtable. */
11676 if (! empty_dtor || TYPE_USES_COMPLEX_INHERITANCE (current_class_type))
11678 /* Make all virtual function table pointers in non-virtual base
11679 classes point to CURRENT_CLASS_TYPE's virtual function
11681 expand_direct_vtbls_init (binfo, binfo, 1, 0, current_class_ptr);
11683 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11684 expand_indirect_vtbls_init (binfo, current_class_ref, current_class_ptr);
11687 if (! ok_to_optimize_dtor)
11689 cond = build_binary_op (NE_EXPR,
11690 current_class_ptr, integer_zero_node, 1);
11691 expand_start_cond (cond, 0);
11694 insns = get_insns ();
11697 last_parm_insn = get_first_nonparm_insn ();
11698 if (last_parm_insn == NULL_RTX)
11699 last_parm_insn = get_last_insn ();
11701 last_parm_insn = previous_insn (last_parm_insn);
11703 emit_insns_after (insns, last_parm_insn);
11705 if (! ok_to_optimize_dtor)
11706 expand_end_cond ();
11708 else if (current_function_assigns_this)
11710 /* Does not need to call emit_base_init, because
11711 that is done (if needed) just after assignment to this
11714 if (DECL_CONSTRUCTOR_P (current_function_decl))
11716 end_protect_partials ();
11717 expand_label (ctor_label);
11718 ctor_label = NULL_TREE;
11722 decls = getdecls ();
11723 expand_end_bindings (decls, decls != NULL_TREE, 0);
11724 poplevel (decls != NULL_TREE, 0, 0);
11726 c_expand_return (current_class_ptr);
11728 else if (TYPE_MAIN_VARIANT (TREE_TYPE (
11729 DECL_RESULT (current_function_decl))) != void_type_node
11730 && return_label != NULL_RTX)
11731 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11733 current_function_assigns_this = 0;
11734 current_function_just_assigned_this = 0;
11735 base_init_expr = NULL_TREE;
11737 else if (DECL_CONSTRUCTOR_P (fndecl))
11739 tree cond, thenclause;
11740 /* Allow constructor for a type to get a new instance of the object
11741 using `build_new'. */
11742 tree abstract_virtuals = CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type);
11743 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = NULL_TREE;
11745 DECL_RETURNS_FIRST_ARG (fndecl) = 1;
11747 if (flag_this_is_variable > 0)
11749 cond = build_binary_op (EQ_EXPR,
11750 current_class_ptr, integer_zero_node, 1);
11751 thenclause = build_modify_expr (current_class_ptr, NOP_EXPR,
11752 build_new (NULL_TREE, current_class_type, void_type_node, 0));
11755 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = abstract_virtuals;
11759 if (flag_this_is_variable > 0)
11761 expand_start_cond (cond, 0);
11762 expand_expr_stmt (thenclause);
11763 expand_end_cond ();
11766 /* Emit insns from `emit_base_init' which sets up virtual
11767 function table pointer(s). */
11768 if (base_init_expr)
11770 expand_expr_stmt (base_init_expr);
11771 base_init_expr = NULL_TREE;
11774 insns = get_insns ();
11777 /* This is where the body of the constructor begins.
11778 If there were no insns in this function body, then the
11779 last_parm_insn is also the last insn.
11781 If optimization is enabled, last_parm_insn may move, so
11782 we don't hold on to it (across emit_base_init). */
11783 last_parm_insn = get_first_nonparm_insn ();
11784 if (last_parm_insn == NULL_RTX)
11785 last_parm_insn = get_last_insn ();
11787 last_parm_insn = previous_insn (last_parm_insn);
11789 emit_insns_after (insns, last_parm_insn);
11791 end_protect_partials ();
11793 /* This is where the body of the constructor ends. */
11794 expand_label (ctor_label);
11795 ctor_label = NULL_TREE;
11799 decls = getdecls ();
11800 expand_end_bindings (decls, decls != NULL_TREE, 0);
11801 poplevel (decls != NULL_TREE, 1, 0);
11804 c_expand_return (current_class_ptr);
11806 current_function_assigns_this = 0;
11807 current_function_just_assigned_this = 0;
11809 else if (IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4
11810 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main")
11811 && DECL_CONTEXT (fndecl) == NULL_TREE)
11813 /* Make it so that `main' always returns 0 by default. */
11815 c_expand_return (integer_one_node);
11817 c_expand_return (integer_zero_node);
11820 else if (return_label != NULL_RTX
11821 && current_function_return_value == NULL_TREE
11822 && ! DECL_NAME (DECL_RESULT (current_function_decl)))
11823 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11825 /* If this function is supposed to return a value, ensure that
11826 we do not fall into the cleanups by mistake. The end of our
11827 function will look like this:
11829 user code (may have return stmt somewhere)
11830 goto no_return_label
11835 NOTE_INSN_FUNCTION_END
11839 If the user omits a return stmt in the USER CODE section, we
11840 will have a control path which reaches NOTE_INSN_FUNCTION_END.
11841 Otherwise, we won't. */
11842 if (no_return_label)
11844 DECL_CONTEXT (no_return_label) = fndecl;
11845 DECL_INITIAL (no_return_label) = error_mark_node;
11846 DECL_SOURCE_FILE (no_return_label) = input_filename;
11847 DECL_SOURCE_LINE (no_return_label) = lineno;
11848 expand_goto (no_return_label);
11853 /* remove the binding contour which is used
11854 to catch cleanup-generated temporaries. */
11855 expand_end_bindings (0, 0, 0);
11856 poplevel (0, 0, 0);
11860 /* Emit label at beginning of cleanup code for parameters. */
11861 emit_label (cleanup_label);
11863 /* Get return value into register if that's where it's supposed to be. */
11864 if (original_result_rtx)
11865 fixup_result_decl (DECL_RESULT (fndecl), original_result_rtx);
11867 /* Finish building code that will trigger warnings if users forget
11868 to make their functions return values. */
11869 if (no_return_label || cleanup_label)
11870 emit_jump (return_label);
11871 if (no_return_label)
11873 /* We don't need to call `expand_*_return' here because we
11874 don't need any cleanups here--this path of code is only
11875 for error checking purposes. */
11876 expand_label (no_return_label);
11879 /* Generate rtl for function exit. */
11880 expand_function_end (input_filename, lineno, 1);
11882 if (flag_exceptions)
11883 expand_exception_blocks ();
11886 /* This must come after expand_function_end because cleanups might
11887 have declarations (from inline functions) that need to go into
11888 this function's blocks. */
11889 if (current_binding_level->parm_flag != 1)
11890 my_friendly_abort (122);
11891 poplevel (1, 0, 1);
11893 /* reset scope for C++: if we were in the scope of a class,
11894 then when we finish this function, we are not longer so.
11895 This cannot be done until we know for sure that no more
11896 class members will ever be referenced in this function
11897 (i.e., calls to destructors). */
11898 if (current_class_name)
11900 ctype = current_class_type;
11901 pop_nested_class (1);
11904 pop_memoized_context (1);
11906 /* Must mark the RESULT_DECL as being in this function. */
11907 DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
11909 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
11910 to the FUNCTION_DECL node itself. */
11911 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
11913 if (! processing_template_decl)
11915 /* So we can tell if jump_optimize sets it to 1. */
11918 /* Run the optimizers and output the assembler code for this function. */
11919 rest_of_compilation (fndecl);
11921 if (DECL_SAVED_INSNS (fndecl) && ! TREE_ASM_WRITTEN (fndecl))
11923 /* Set DECL_EXTERNAL so that assemble_external will be called as
11924 necessary. We'll clear it again in finish_file. */
11925 if (! DECL_EXTERNAL (fndecl))
11926 DECL_NOT_REALLY_EXTERN (fndecl) = 1;
11927 DECL_EXTERNAL (fndecl) = 1;
11928 mark_inline_for_output (fndecl);
11931 if (ctype && TREE_ASM_WRITTEN (fndecl))
11932 note_debug_info_needed (ctype);
11934 current_function_returns_null |= can_reach_end;
11936 /* Since we don't normally go through c_expand_return for constructors,
11937 this normally gets the wrong value.
11938 Also, named return values have their return codes emitted after
11939 NOTE_INSN_FUNCTION_END, confusing jump.c. */
11940 if (DECL_CONSTRUCTOR_P (fndecl)
11941 || DECL_NAME (DECL_RESULT (fndecl)) != NULL_TREE)
11942 current_function_returns_null = 0;
11944 if (TREE_THIS_VOLATILE (fndecl) && current_function_returns_null)
11945 cp_warning ("`noreturn' function `%D' does return", fndecl);
11946 else if ((warn_return_type || pedantic)
11947 && current_function_returns_null
11948 && TYPE_MAIN_VARIANT (TREE_TYPE (fntype)) != void_type_node)
11950 /* If this function returns non-void and control can drop through,
11952 cp_pedwarn ("control reaches end of non-void function `%D'", fndecl);
11954 /* With just -W, complain only if function returns both with
11955 and without a value. */
11956 else if (extra_warnings
11957 && current_function_returns_value && current_function_returns_null)
11958 warning ("this function may return with or without a value");
11963 /* Free all the tree nodes making up this function. */
11964 /* Switch back to allocating nodes permanently
11965 until we start another function. */
11966 if (processing_template_decl)
11968 --minimal_parse_mode;
11969 DECL_SAVED_TREE (fndecl) = TREE_CHAIN (DECL_SAVED_TREE (fndecl));
11973 permanent_allocation (1);
11975 if (DECL_SAVED_INSNS (fndecl) == NULL_RTX)
11979 /* Stop pointing to the local nodes about to be freed. */
11980 /* But DECL_INITIAL must remain nonzero so we know this
11981 was an actual function definition. */
11982 DECL_INITIAL (fndecl) = error_mark_node;
11983 for (t = DECL_ARGUMENTS (fndecl); t; t = TREE_CHAIN (t))
11984 DECL_RTL (t) = DECL_INCOMING_RTL (t) = NULL_RTX;
11987 if (DECL_STATIC_CONSTRUCTOR (fndecl))
11988 static_ctors = perm_tree_cons (NULL_TREE, fndecl, static_ctors);
11989 if (DECL_STATIC_DESTRUCTOR (fndecl))
11990 static_dtors = perm_tree_cons (NULL_TREE, fndecl, static_dtors);
11994 /* Let the error reporting routines know that we're outside a
11995 function. For a nested function, this value is used in
11996 pop_cp_function_context and then reset via pop_function_context. */
11997 current_function_decl = NULL_TREE;
12000 named_label_uses = NULL;
12001 current_class_ptr = NULL_TREE;
12002 current_class_ref = NULL_TREE;
12005 /* Create the FUNCTION_DECL for a function definition.
12006 LINE1 is the line number that the definition absolutely begins on.
12007 LINE2 is the line number that the name of the function appears on.
12008 DECLSPECS and DECLARATOR are the parts of the declaration;
12009 they describe the return type and the name of the function,
12010 but twisted together in a fashion that parallels the syntax of C.
12012 This function creates a binding context for the function body
12013 as well as setting up the FUNCTION_DECL in current_function_decl.
12015 Returns a FUNCTION_DECL on success.
12017 If the DECLARATOR is not suitable for a function (it defines a datum
12018 instead), we return 0, which tells yyparse to report a parse error.
12020 May return void_type_node indicating that this method is actually
12021 a friend. See grokfield for more details.
12023 Came here with a `.pushlevel' .
12025 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
12026 CHANGES TO CODE IN `grokfield'. */
12029 start_method (declspecs, declarator)
12030 tree declarator, declspecs;
12032 tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
12035 /* Something too ugly to handle. */
12036 if (fndecl == NULL_TREE)
12039 /* Pass friends other than inline friend functions back. */
12040 if (TYPE_MAIN_VARIANT (fndecl) == void_type_node)
12043 if (TREE_CODE (fndecl) != FUNCTION_DECL)
12044 /* Not a function, tell parser to report parse error. */
12047 if (IS_SIGNATURE (current_class_type))
12049 IS_DEFAULT_IMPLEMENTATION (fndecl) = 1;
12050 /* In case we need this info later. */
12051 HAS_DEFAULT_IMPLEMENTATION (current_class_type) = 1;
12054 if (DECL_IN_AGGR_P (fndecl))
12056 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type)
12058 if (DECL_CONTEXT (fndecl))
12059 cp_error ("`%D' is already defined in class %s", fndecl,
12060 TYPE_NAME_STRING (DECL_CONTEXT (fndecl)));
12062 return void_type_node;
12065 DECL_THIS_INLINE (fndecl) = 1;
12067 if (flag_default_inline)
12068 DECL_INLINE (fndecl) = 1;
12070 if (processing_template_decl && ! current_function_decl)
12071 push_template_decl (fndecl);
12073 /* We read in the parameters on the maybepermanent_obstack,
12074 but we won't be getting back to them until after we
12075 may have clobbered them. So the call to preserve_data
12076 will keep them safe. */
12079 if (! DECL_FRIEND_P (fndecl))
12081 if (DECL_CHAIN (fndecl) != NULL_TREE)
12083 /* Need a fresh node here so that we don't get circularity
12084 when we link these together. If FNDECL was a friend, then
12085 `pushdecl' does the right thing, which is nothing wrt its
12086 current value of DECL_CHAIN. */
12087 fndecl = copy_node (fndecl);
12089 if (TREE_CHAIN (fndecl))
12091 fndecl = copy_node (fndecl);
12092 TREE_CHAIN (fndecl) = NULL_TREE;
12095 if (DECL_CONSTRUCTOR_P (fndecl))
12097 if (! grok_ctor_properties (current_class_type, fndecl))
12098 return void_type_node;
12100 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl)))
12101 grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0);
12104 cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0, 0);
12106 /* Make a place for the parms */
12108 current_binding_level->parm_flag = 1;
12110 DECL_IN_AGGR_P (fndecl) = 1;
12114 /* Go through the motions of finishing a function definition.
12115 We don't compile this method until after the whole class has
12118 FINISH_METHOD must return something that looks as though it
12119 came from GROKFIELD (since we are defining a method, after all).
12121 This is called after parsing the body of the function definition.
12122 STMTS is the chain of statements that makes up the function body.
12124 DECL is the ..._DECL that `start_method' provided. */
12127 finish_method (decl)
12130 register tree fndecl = decl;
12133 register tree link;
12135 if (TYPE_MAIN_VARIANT (decl) == void_type_node)
12138 old_initial = DECL_INITIAL (fndecl);
12140 /* Undo the level for the parms (from start_method).
12141 This is like poplevel, but it causes nothing to be
12142 saved. Saving information here confuses symbol-table
12143 output routines. Besides, this information will
12144 be correctly output when this method is actually
12147 /* Clear out the meanings of the local variables of this level;
12148 also record in each decl which block it belongs to. */
12150 for (link = current_binding_level->names; link; link = TREE_CHAIN (link))
12152 if (DECL_NAME (link) != NULL_TREE)
12153 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = 0;
12154 my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163);
12155 DECL_CONTEXT (link) = NULL_TREE;
12158 /* Restore all name-meanings of the outer levels
12159 that were shadowed by this level. */
12161 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
12162 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12163 for (link = current_binding_level->class_shadowed;
12164 link; link = TREE_CHAIN (link))
12165 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12166 for (link = current_binding_level->type_shadowed;
12167 link; link = TREE_CHAIN (link))
12168 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12170 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
12171 (HOST_WIDE_INT) current_binding_level->level_chain,
12172 current_binding_level->parm_flag,
12173 current_binding_level->keep);
12175 poplevel (0, 0, 0);
12177 DECL_INITIAL (fndecl) = old_initial;
12179 /* We used to check if the context of FNDECL was different from
12180 current_class_type as another way to get inside here. This didn't work
12181 for String.cc in libg++. */
12182 if (DECL_FRIEND_P (fndecl))
12184 CLASSTYPE_INLINE_FRIENDS (current_class_type)
12185 = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type));
12186 decl = void_type_node;
12192 /* Called when a new struct TYPE is defined.
12193 If this structure or union completes the type of any previous
12194 variable declaration, lay it out and output its rtl. */
12197 hack_incomplete_structures (type)
12202 if (current_binding_level->incomplete == NULL_TREE)
12205 if (!type) /* Don't do this for class templates. */
12208 for (list = ¤t_binding_level->incomplete; *list; )
12210 tree decl = TREE_VALUE (*list);
12211 if (decl && TREE_TYPE (decl) == type
12212 || (TREE_TYPE (decl)
12213 && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
12214 && TREE_TYPE (TREE_TYPE (decl)) == type))
12216 int toplevel = toplevel_bindings_p ();
12217 if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
12218 && TREE_TYPE (TREE_TYPE (decl)) == type)
12219 layout_type (TREE_TYPE (decl));
12220 layout_decl (decl, 0);
12221 rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0);
12225 expand_decl (decl);
12226 cleanup = maybe_build_cleanup (decl);
12227 expand_decl_init (decl);
12228 if (! expand_decl_cleanup (decl, cleanup))
12229 cp_error ("parser lost in parsing declaration of `%D'",
12232 *list = TREE_CHAIN (*list);
12235 list = &TREE_CHAIN (*list);
12239 /* If DECL is of a type which needs a cleanup, build that cleanup here.
12240 See build_delete for information about AUTO_DELETE.
12242 Don't build these on the momentary obstack; they must live
12243 the life of the binding contour. */
12246 maybe_build_cleanup_1 (decl, auto_delete)
12247 tree decl, auto_delete;
12249 tree type = TREE_TYPE (decl);
12250 if (TYPE_NEEDS_DESTRUCTOR (type))
12252 int temp = 0, flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
12255 if (TREE_CODE (decl) != PARM_DECL)
12256 temp = suspend_momentary ();
12258 if (TREE_CODE (type) == ARRAY_TYPE)
12262 mark_addressable (decl);
12263 rval = build_unary_op (ADDR_EXPR, decl, 0);
12266 /* Optimize for space over speed here. */
12267 if (! TYPE_USES_VIRTUAL_BASECLASSES (type)
12268 || flag_expensive_optimizations)
12269 flags |= LOOKUP_NONVIRTUAL;
12271 rval = build_delete (TREE_TYPE (rval), rval, auto_delete, flags, 0);
12273 if (TYPE_USES_VIRTUAL_BASECLASSES (type)
12274 && ! TYPE_HAS_DESTRUCTOR (type))
12275 rval = build_compound_expr (tree_cons (NULL_TREE, rval,
12276 build_tree_list (NULL_TREE, build_vbase_delete (type, decl))));
12278 /* Since this is a cleanup, UNSAVE it now. */
12279 rval = unsave_expr (rval);
12281 if (TREE_CODE (decl) != PARM_DECL)
12282 resume_momentary (temp);
12289 /* If DECL is of a type which needs a cleanup, build that cleanup
12290 here. The cleanup does free the storage with a call to delete. */
12293 maybe_build_cleanup_and_delete (decl)
12296 return maybe_build_cleanup_1 (decl, integer_three_node);
12299 /* If DECL is of a type which needs a cleanup, build that cleanup
12300 here. The cleanup does not free the storage with a call a delete. */
12303 maybe_build_cleanup (decl)
12306 return maybe_build_cleanup_1 (decl, integer_two_node);
12309 /* Expand a C++ expression at the statement level.
12310 This is needed to ferret out nodes which have UNKNOWN_TYPE.
12311 The C++ type checker should get all of these out when
12312 expressions are combined with other, type-providing, expressions,
12313 leaving only orphan expressions, such as:
12315 &class::bar; / / takes its address, but does nothing with it. */
12318 cplus_expand_expr_stmt (exp)
12321 extern int temp_slot_level;
12322 extern int target_temp_slot_level;
12323 tree old_cleanups = cleanups_this_call;
12324 int old_temp_level = target_temp_slot_level;
12325 push_temp_slots ();
12326 push_temp_slots ();
12327 target_temp_slot_level = temp_slot_level;
12329 if (processing_template_decl)
12331 add_tree (build_min_nt (EXPR_STMT, exp));
12335 if (TREE_TYPE (exp) == unknown_type_node)
12337 if (TREE_CODE (exp) == ADDR_EXPR || TREE_CODE (exp) == TREE_LIST)
12338 error ("address of overloaded function with no contextual type information");
12339 else if (TREE_CODE (exp) == COMPONENT_REF)
12340 warning ("useless reference to a member function name, did you forget the ()?");
12344 if (TREE_CODE (exp) == FUNCTION_DECL)
12346 cp_warning ("reference, not call, to function `%D'", exp);
12347 warning ("at this point in file");
12351 /* We should do this eventually, but right now this causes regex.o from
12352 libg++ to miscompile, and tString to core dump. */
12353 exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp);
12355 /* If we don't do this, we end up down inside expand_expr
12356 trying to do TYPE_MODE on the ERROR_MARK, and really
12357 go outside the bounds of the type. */
12358 if (exp != error_mark_node)
12359 expand_expr_stmt (break_out_cleanups (exp));
12362 /* Clean up any pending cleanups. This happens when a function call
12363 returns a cleanup-needing value that nobody uses. */
12364 expand_cleanups_to (old_cleanups);
12367 target_temp_slot_level = old_temp_level;
12368 /* There might something left from building the trees. */
12369 if (cleanups_this_call)
12371 expand_cleanups_to (NULL_TREE);
12373 free_temp_slots ();
12376 /* When a stmt has been parsed, this function is called.
12378 Currently, this function only does something within a
12379 constructor's scope: if a stmt has just assigned to this,
12380 and we are in a derived class, we call `emit_base_init'. */
12385 extern struct nesting *cond_stack, *loop_stack, *case_stack;
12388 if (current_function_assigns_this
12389 || ! current_function_just_assigned_this)
12391 if (DECL_CONSTRUCTOR_P (current_function_decl))
12393 /* Constructors must wait until we are out of control
12394 zones before calling base constructors. */
12395 if (cond_stack || loop_stack || case_stack)
12397 expand_expr_stmt (base_init_expr);
12398 check_base_init (current_class_type);
12400 current_function_assigns_this = 1;
12403 /* Change a static member function definition into a FUNCTION_TYPE, instead
12404 of the METHOD_TYPE that we create when it's originally parsed.
12406 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
12407 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
12408 other decls. Either pass the addresses of local variables or NULL. */
12411 revert_static_member_fn (decl, fn, argtypes)
12412 tree *decl, *fn, *argtypes;
12415 tree function = fn ? *fn : TREE_TYPE (*decl);
12416 tree args = argtypes ? *argtypes : TYPE_ARG_TYPES (function);
12418 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args))))
12419 cp_error ("static member function `%#D' declared const", *decl);
12420 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args))))
12421 cp_error ("static member function `%#D' declared volatile", *decl);
12423 args = TREE_CHAIN (args);
12424 tmp = build_function_type (TREE_TYPE (function), args);
12425 tmp = build_type_variant (tmp, TYPE_READONLY (function),
12426 TYPE_VOLATILE (function));
12427 tmp = build_exception_variant (tmp,
12428 TYPE_RAISES_EXCEPTIONS (function));
12429 TREE_TYPE (*decl) = tmp;
12430 if (DECL_ARGUMENTS (*decl))
12431 DECL_ARGUMENTS (*decl) = TREE_CHAIN (DECL_ARGUMENTS (*decl));
12432 DECL_STATIC_FUNCTION_P (*decl) = 1;
12440 id_in_current_class (id)
12443 return !!purpose_member (id, class_binding_level->class_shadowed);
12450 int warn_about_return_type;
12452 int just_assigned_this;
12454 int temp_name_counter;
12456 tree shadowed_labels;
12459 rtx last_dtor_insn;
12460 tree base_init_list;
12461 tree member_init_list;
12462 tree base_init_expr;
12463 tree current_class_ptr;
12464 tree current_class_ref;
12466 struct cp_function *next;
12467 struct binding_level *binding_level;
12472 struct cp_function *cp_function_chain;
12474 extern int temp_name_counter;
12476 /* Save and reinitialize the variables
12477 used during compilation of a C++ function. */
12480 push_cp_function_context (context)
12483 struct cp_function *p
12484 = (struct cp_function *) xmalloc (sizeof (struct cp_function));
12486 push_function_context_to (context);
12488 p->next = cp_function_chain;
12489 cp_function_chain = p;
12491 p->named_labels = named_labels;
12492 p->shadowed_labels = shadowed_labels;
12493 p->returns_value = current_function_returns_value;
12494 p->returns_null = current_function_returns_null;
12495 p->warn_about_return_type = warn_about_return_type;
12496 p->binding_level = current_binding_level;
12497 p->ctor_label = ctor_label;
12498 p->dtor_label = dtor_label;
12499 p->last_dtor_insn = last_dtor_insn;
12500 p->assigns_this = current_function_assigns_this;
12501 p->just_assigned_this = current_function_just_assigned_this;
12502 p->parms_stored = current_function_parms_stored;
12503 p->result_rtx = original_result_rtx;
12504 p->base_init_expr = base_init_expr;
12505 p->temp_name_counter = temp_name_counter;
12506 p->base_init_list = current_base_init_list;
12507 p->member_init_list = current_member_init_list;
12508 p->current_class_ptr = current_class_ptr;
12509 p->current_class_ref = current_class_ref;
12512 /* Restore the variables used during compilation of a C++ function. */
12515 pop_cp_function_context (context)
12518 struct cp_function *p = cp_function_chain;
12521 /* Bring back all the labels that were shadowed. */
12522 for (link = shadowed_labels; link; link = TREE_CHAIN (link))
12523 if (DECL_NAME (TREE_VALUE (link)) != 0)
12524 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)),
12525 TREE_VALUE (link));
12527 pop_function_context_from (context);
12529 cp_function_chain = p->next;
12531 named_labels = p->named_labels;
12532 shadowed_labels = p->shadowed_labels;
12533 current_function_returns_value = p->returns_value;
12534 current_function_returns_null = p->returns_null;
12535 warn_about_return_type = p->warn_about_return_type;
12536 current_binding_level = p->binding_level;
12537 ctor_label = p->ctor_label;
12538 dtor_label = p->dtor_label;
12539 last_dtor_insn = p->last_dtor_insn;
12540 current_function_assigns_this = p->assigns_this;
12541 current_function_just_assigned_this = p->just_assigned_this;
12542 current_function_parms_stored = p->parms_stored;
12543 original_result_rtx = p->result_rtx;
12544 base_init_expr = p->base_init_expr;
12545 temp_name_counter = p->temp_name_counter;
12546 current_base_init_list = p->base_init_list;
12547 current_member_init_list = p->member_init_list;
12548 current_class_ptr = p->current_class_ptr;
12549 current_class_ref = p->current_class_ref;
12557 return function_depth != 0;
12560 /* FSF LOCAL dje prefix attributes */
12561 /* Strip attributes from SPECS_ATTRS, a list of declspecs and attributes.
12562 This function is used by the parser when a rule will accept attributes
12563 in a particular position, but we don't want to support that just yet.
12565 A warning is issued for every ignored attribute. */
12568 strip_attrs (specs_attrs)
12573 split_specs_attrs (specs_attrs, &specs, &attrs);
12577 warning ("`%s' attribute ignored",
12578 IDENTIFIER_POINTER (TREE_PURPOSE (attrs)));
12579 attrs = TREE_CHAIN (attrs);
12584 /* END FSF LOCAL */