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) ? (BITS_PER_WORD) : (BITS_PER_UNIT))
104 #define BOOL_TYPE_SIZE BITS_PER_UNIT
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);
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 it is anonymous, then we are called from pushdecl,
2081 and we don't want to infinitely recurse. */
2082 if (! ANON_AGGRNAME_P (name))
2084 if (b->parm_flag == 2)
2085 d = pushdecl_class_level (d);
2087 d = pushdecl_with_scope (d, b);
2092 /* Make nested declarations go into class-level scope. */
2094 d = build_decl (TYPE_DECL, name, type);
2095 SET_DECL_ARTIFICIAL (d);
2096 TYPE_MAIN_DECL (type) = d;
2097 DECL_CONTEXT (d) = context;
2098 if (! globalize && processing_template_decl && IS_AGGR_TYPE (type))
2099 push_template_decl (d);
2101 d = pushdecl_class_level (d);
2105 if (write_symbols != DWARF_DEBUG)
2107 if (ANON_AGGRNAME_P (name))
2108 DECL_IGNORED_P (d) = 1;
2111 TYPE_CONTEXT (type) = DECL_CONTEXT (d);
2112 DECL_ASSEMBLER_NAME (d)
2113 = get_identifier (build_overload_name (type, 1, 1));
2116 if (b->parm_flag == 2)
2118 TREE_NONLOCAL_FLAG (type) = 1;
2119 if (TYPE_SIZE (current_class_type) == NULL_TREE)
2120 CLASSTYPE_TAGS (current_class_type) = b->tags;
2124 if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
2125 /* Use the canonical TYPE_DECL for this node. */
2126 TYPE_STUB_DECL (type) = TYPE_NAME (type);
2129 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2130 will be the tagged type we just added to the current
2131 binding level. This fake NULL-named TYPE_DECL node helps
2132 dwarfout.c to know when it needs to output a
2133 representation of a tagged type, and it also gives us a
2134 convenient place to record the "scope start" address for
2137 tree d = build_decl (TYPE_DECL, NULL_TREE, type);
2138 TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b);
2142 /* Counter used to create anonymous type names. */
2144 static int anon_cnt = 0;
2146 /* Return an IDENTIFIER which can be used as a name for
2147 anonymous structs and unions. */
2154 sprintf (buf, ANON_AGGRNAME_FORMAT, anon_cnt++);
2155 return get_identifier (buf);
2158 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2159 This keeps dbxout from getting confused. */
2164 register struct binding_level *b;
2166 static int last_cnt = 0;
2168 /* Fast out if no new anon names were declared. */
2169 if (last_cnt == anon_cnt)
2172 b = current_binding_level;
2173 while (b->tag_transparent)
2178 /* A NULL purpose means we have already processed all tags
2179 from here to the end of the list. */
2180 if (TREE_PURPOSE (tags) == NULL_TREE)
2182 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags)))
2183 TREE_PURPOSE (tags) = NULL_TREE;
2184 tags = TREE_CHAIN (tags);
2186 last_cnt = anon_cnt;
2189 /* Subroutine of duplicate_decls: return truthvalue of whether
2190 or not types of these decls match.
2192 For C++, we must compare the parameter list so that `int' can match
2193 `int&' in a parameter position, but `int&' is not confused with
2197 decls_match (newdecl, olddecl)
2198 tree newdecl, olddecl;
2202 if (TREE_CODE (newdecl) == FUNCTION_DECL
2203 && TREE_CODE (olddecl) == FUNCTION_DECL)
2205 tree f1 = TREE_TYPE (newdecl);
2206 tree f2 = TREE_TYPE (olddecl);
2207 tree p1 = TYPE_ARG_TYPES (f1);
2208 tree p2 = TYPE_ARG_TYPES (f2);
2210 /* When we parse a static member function definition,
2211 we put together a FUNCTION_DECL which thinks its type
2212 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2214 if (TREE_CODE (f1) == METHOD_TYPE && DECL_STATIC_FUNCTION_P (olddecl))
2215 revert_static_member_fn (&newdecl, &f1, &p1);
2216 else if (TREE_CODE (f2) == METHOD_TYPE
2217 && DECL_STATIC_FUNCTION_P (newdecl))
2218 revert_static_member_fn (&olddecl, &f2, &p2);
2220 /* Here we must take care of the case where new default
2221 parameters are specified. Also, warn if an old
2222 declaration becomes ambiguous because default
2223 parameters may cause the two to be ambiguous. */
2224 if (TREE_CODE (f1) != TREE_CODE (f2))
2226 if (TREE_CODE (f1) == OFFSET_TYPE)
2227 cp_compiler_error ("`%D' redeclared as member function", newdecl);
2229 cp_compiler_error ("`%D' redeclared as non-member function", newdecl);
2233 if (comptypes (TREE_TYPE (f1), TREE_TYPE (f2), 1))
2235 if (! strict_prototypes_lang_c && DECL_LANGUAGE (olddecl) == lang_c
2238 types_match = self_promoting_args_p (p1);
2239 if (p1 == void_list_node)
2240 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2242 else if (!strict_prototypes_lang_c && DECL_LANGUAGE (olddecl)==lang_c
2243 && DECL_LANGUAGE (newdecl) == lang_c && p1 == NULL_TREE)
2245 types_match = self_promoting_args_p (p2);
2246 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2249 types_match = compparms (p1, p2, 3);
2254 else if (TREE_CODE (newdecl) == TEMPLATE_DECL
2255 && TREE_CODE (olddecl) == TEMPLATE_DECL)
2257 tree newargs = DECL_TEMPLATE_PARMS (newdecl);
2258 tree oldargs = DECL_TEMPLATE_PARMS (olddecl);
2259 int i, len = TREE_VEC_LENGTH (newargs);
2261 if (TREE_VEC_LENGTH (oldargs) != len)
2264 for (i = 0; i < len; i++)
2266 tree newarg = TREE_VALUE (TREE_VEC_ELT (newargs, i));
2267 tree oldarg = TREE_VALUE (TREE_VEC_ELT (oldargs, i));
2268 if (TREE_CODE (newarg) != TREE_CODE (oldarg))
2270 else if (TREE_CODE (newarg) == TYPE_DECL)
2272 else if (! comptypes (TREE_TYPE (newarg), TREE_TYPE (oldarg), 1))
2276 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2279 types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl),
2280 DECL_TEMPLATE_RESULT (newdecl));
2284 if (TREE_TYPE (newdecl) == error_mark_node)
2285 types_match = TREE_TYPE (olddecl) == error_mark_node;
2286 else if (TREE_TYPE (olddecl) == NULL_TREE)
2287 types_match = TREE_TYPE (newdecl) == NULL_TREE;
2288 else if (TREE_TYPE (newdecl) == NULL_TREE)
2290 /* Qualifiers must match, and they may be present on either, the type
2292 else if ((TREE_READONLY (newdecl)
2293 || TYPE_READONLY (TREE_TYPE (newdecl)))
2294 == (TREE_READONLY (olddecl)
2295 || TYPE_READONLY (TREE_TYPE (olddecl)))
2296 && (TREE_THIS_VOLATILE (newdecl)
2297 || TYPE_VOLATILE (TREE_TYPE (newdecl)))
2298 == (TREE_THIS_VOLATILE (olddecl)
2299 || TYPE_VOLATILE (TREE_TYPE (olddecl))))
2300 types_match = comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl)),
2301 TYPE_MAIN_VARIANT (TREE_TYPE (olddecl)), 1);
2309 /* If NEWDECL is `static' and an `extern' was seen previously,
2310 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2311 information about previous usage as an `extern'.)
2313 Note that this does not apply to the C++ case of declaring
2314 a variable `extern const' and then later `const'.
2316 Don't complain about built-in functions, since they are beyond
2317 the user's control. */
2320 warn_extern_redeclared_static (newdecl, olddecl)
2321 tree newdecl, olddecl;
2325 static char *explicit_extern_static_warning
2326 = "`%D' was declared `extern' and later `static'";
2327 static char *implicit_extern_static_warning
2328 = "`%D' was declared implicitly `extern' and later `static'";
2330 if (TREE_CODE (newdecl) == TYPE_DECL)
2333 name = DECL_ASSEMBLER_NAME (newdecl);
2334 if (TREE_PUBLIC (name) && DECL_THIS_STATIC (newdecl))
2336 /* It's okay to redeclare an ANSI built-in function as static,
2337 or to declare a non-ANSI built-in function as anything. */
2338 if (! (TREE_CODE (newdecl) == FUNCTION_DECL
2339 && olddecl != NULL_TREE
2340 && TREE_CODE (olddecl) == FUNCTION_DECL
2341 && (DECL_BUILT_IN (olddecl)
2342 || DECL_BUILT_IN_NONANSI (olddecl))))
2344 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name)
2345 ? implicit_extern_static_warning
2346 : explicit_extern_static_warning, newdecl);
2347 if (olddecl != NULL_TREE)
2348 cp_pedwarn_at ("previous declaration of `%D'", olddecl);
2353 /* Handle when a new declaration NEWDECL has the same name as an old
2354 one OLDDECL in the same binding contour. Prints an error message
2357 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2358 Otherwise, return 0. */
2361 duplicate_decls (newdecl, olddecl)
2362 register tree newdecl, olddecl;
2364 extern struct obstack permanent_obstack;
2365 unsigned olddecl_uid = DECL_UID (olddecl);
2366 int olddecl_friend = 0, types_match = 0;
2367 int new_defines_function;
2369 if (newdecl == olddecl)
2372 if (TREE_CODE_CLASS (TREE_CODE (olddecl)) == 'd')
2373 DECL_MACHINE_ATTRIBUTES (newdecl) = DECL_MACHINE_ATTRIBUTES (olddecl);
2375 types_match = decls_match (newdecl, olddecl);
2377 if (TREE_CODE (olddecl) != TREE_LIST)
2378 olddecl_friend = DECL_LANG_SPECIFIC (olddecl) && DECL_FRIEND_P (olddecl);
2380 /* If either the type of the new decl or the type of the old decl is an
2381 error_mark_node, then that implies that we have already issued an
2382 error (earlier) for some bogus type specification, and in that case,
2383 it is rather pointless to harass the user with yet more error message
2384 about the same declaration, so well just pretent the types match here. */
2385 if ((TREE_TYPE (newdecl)
2386 && TREE_CODE (TREE_TYPE (newdecl)) == ERROR_MARK)
2387 || (TREE_TYPE (olddecl)
2388 && TREE_CODE (TREE_TYPE (olddecl)) == ERROR_MARK))
2391 if (TREE_CODE (olddecl) == FUNCTION_DECL
2392 && DECL_ARTIFICIAL (olddecl)
2393 && (DECL_BUILT_IN (olddecl) || DECL_BUILT_IN_NONANSI (olddecl)))
2395 /* If you declare a built-in or predefined function name as static,
2396 the old definition is overridden, but optionally warn this was a
2397 bad choice of name. Ditto for overloads. */
2398 if (! DECL_PUBLIC (newdecl)
2399 || (TREE_CODE (newdecl) == FUNCTION_DECL
2400 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)))
2403 cp_warning ("shadowing %s function `%#D'",
2404 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
2406 /* Discard the old built-in function. */
2409 else if (! types_match)
2411 if (TREE_CODE (newdecl) != FUNCTION_DECL)
2413 /* If the built-in is not ansi, then programs can override
2414 it even globally without an error. */
2415 if (! DECL_BUILT_IN (olddecl))
2416 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2420 cp_error ("declaration of `%#D'", newdecl);
2421 cp_error ("conflicts with built-in declaration `%#D'",
2427 cp_warning ("declaration of `%#D'", newdecl);
2428 cp_warning ("conflicts with built-in declaration `%#D'",
2432 else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
2434 if ((TREE_CODE (newdecl) == FUNCTION_DECL
2435 && DECL_FUNCTION_TEMPLATE_P (olddecl))
2436 || (TREE_CODE (olddecl) == FUNCTION_DECL
2437 && DECL_FUNCTION_TEMPLATE_P (newdecl)))
2440 cp_error ("`%#D' redeclared as different kind of symbol", newdecl);
2441 if (TREE_CODE (olddecl) == TREE_LIST)
2442 olddecl = TREE_VALUE (olddecl);
2443 cp_error_at ("previous declaration of `%#D'", olddecl);
2445 /* New decl is completely inconsistent with the old one =>
2446 tell caller to replace the old one. */
2450 else if (!types_match)
2452 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2454 /* The name of a class template may not be declared to refer to
2455 any other template, class, function, object, namespace, value,
2456 or type in the same scope. */
2457 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
2458 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2460 cp_error ("declaration of template `%#D'", newdecl);
2461 cp_error_at ("conflicts with previous declaration `%#D'",
2464 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
2465 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
2466 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
2467 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))), 3))
2469 cp_error ("new declaration `%#D'", newdecl);
2470 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2474 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2476 if (DECL_LANGUAGE (newdecl) == lang_c
2477 && DECL_LANGUAGE (olddecl) == lang_c)
2479 cp_error ("declaration of C function `%#D' conflicts with",
2481 cp_error_at ("previous declaration `%#D' here", olddecl);
2483 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
2484 TYPE_ARG_TYPES (TREE_TYPE (olddecl)), 3))
2486 cp_error ("new declaration `%#D'", newdecl);
2487 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2493 /* Already complained about this, so don't do so again. */
2494 else if (current_class_type == NULL_TREE
2495 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type)
2497 cp_error ("conflicting types for `%#D'", newdecl);
2498 cp_error_at ("previous declaration as `%#D'", olddecl);
2503 char *errmsg = redeclaration_error_message (newdecl, olddecl);
2506 cp_error (errmsg, newdecl);
2507 if (DECL_NAME (olddecl) != NULL_TREE)
2508 cp_error_at ((DECL_INITIAL (olddecl)
2509 && current_binding_level == global_binding_level)
2510 ? "`%#D' previously defined here"
2511 : "`%#D' previously declared here", olddecl);
2513 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2514 && DECL_INITIAL (olddecl) != NULL_TREE
2515 && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE
2516 && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE)
2518 /* Prototype decl follows defn w/o prototype. */
2519 cp_warning_at ("prototype for `%#D'", newdecl);
2520 cp_warning_at ("follows non-prototype definition here", olddecl);
2522 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2523 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
2525 /* extern "C" int foo ();
2526 int foo () { bar (); }
2528 if (current_lang_stack == current_lang_base)
2529 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
2532 cp_error_at ("previous declaration of `%#D' with %L linkage",
2533 olddecl, DECL_LANGUAGE (olddecl));
2534 cp_error ("conflicts with new declaration with %L linkage",
2535 DECL_LANGUAGE (newdecl));
2539 if (TREE_CODE (olddecl) == FUNCTION_DECL
2540 && ! DECL_USE_TEMPLATE (olddecl))
2542 tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
2543 tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
2546 if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
2547 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
2549 for (; t1 && t1 != void_list_node;
2550 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
2551 if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
2553 if (1 == simple_cst_equal (TREE_PURPOSE (t1),
2558 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2560 cp_pedwarn_at ("after previous specification in `%#D'",
2566 cp_error ("default argument given for parameter %d of `%#D'",
2568 cp_error_at ("conflicts with previous specification in `%#D'",
2573 if (DECL_THIS_INLINE (newdecl) && ! DECL_THIS_INLINE (olddecl)
2574 && TREE_ADDRESSABLE (olddecl) && warn_inline)
2576 cp_warning ("`%#D' was used before it was declared inline",
2578 cp_warning_at ("previous non-inline declaration here",
2582 /* These bits are logically part of the type for non-functions. */
2583 else if (TREE_READONLY (newdecl) != TREE_READONLY (olddecl)
2584 || TREE_THIS_VOLATILE (newdecl) != TREE_THIS_VOLATILE (olddecl))
2586 cp_pedwarn ("type qualifiers for `%#D'", newdecl);
2587 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl);
2591 /* If new decl is `static' and an `extern' was seen previously,
2593 warn_extern_redeclared_static (newdecl, olddecl);
2595 /* We have committed to returning 1 at this point. */
2596 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2598 /* Now that functions must hold information normally held
2599 by field decls, there is extra work to do so that
2600 declaration information does not get destroyed during
2602 if (DECL_VINDEX (olddecl))
2603 DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
2604 if (DECL_CONTEXT (olddecl))
2605 DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
2606 if (DECL_CLASS_CONTEXT (olddecl))
2607 DECL_CLASS_CONTEXT (newdecl) = DECL_CLASS_CONTEXT (olddecl);
2608 if (DECL_CHAIN (newdecl) == NULL_TREE)
2609 DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl);
2610 if (DECL_PENDING_INLINE_INFO (newdecl) == (struct pending_inline *)0)
2611 DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
2612 DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
2613 DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
2614 DECL_ABSTRACT_VIRTUAL_P (newdecl) |= DECL_ABSTRACT_VIRTUAL_P (olddecl);
2617 /* Deal with C++: must preserve virtual function table size. */
2618 if (TREE_CODE (olddecl) == TYPE_DECL)
2620 register tree newtype = TREE_TYPE (newdecl);
2621 register tree oldtype = TREE_TYPE (olddecl);
2623 if (newtype != error_mark_node && oldtype != error_mark_node
2624 && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
2626 CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype);
2627 CLASSTYPE_FRIEND_CLASSES (newtype)
2628 = CLASSTYPE_FRIEND_CLASSES (oldtype);
2632 /* Special handling ensues if new decl is a function definition. */
2633 new_defines_function = (TREE_CODE (newdecl) == FUNCTION_DECL
2634 && DECL_INITIAL (newdecl) != NULL_TREE);
2636 /* Optionally warn about more than one declaration for the same name,
2637 but don't warn about a function declaration followed by a definition. */
2638 if (warn_redundant_decls
2639 && ! DECL_ARTIFICIAL (olddecl)
2640 && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
2641 /* Don't warn about extern decl followed by (tentative) definition. */
2642 && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl)))
2644 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl);
2645 cp_warning_at ("previous declaration of `%D'", olddecl);
2648 /* Copy all the DECL_... slots specified in the new decl
2649 except for any that we copy here from the old type. */
2651 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2653 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
2654 DECL_TEMPLATE_RESULT (olddecl) = DECL_TEMPLATE_RESULT (newdecl);
2655 DECL_TEMPLATE_PARMS (olddecl) = DECL_TEMPLATE_PARMS (newdecl);
2661 /* Automatically handles default parameters. */
2662 tree oldtype = TREE_TYPE (olddecl);
2665 /* Make sure we put the new type in the same obstack as the old one. */
2667 push_obstacks (TYPE_OBSTACK (oldtype), TYPE_OBSTACK (oldtype));
2670 push_obstacks_nochange ();
2671 end_temporary_allocation ();
2674 /* Merge the data types specified in the two decls. */
2675 newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
2677 if (TREE_CODE (newdecl) == VAR_DECL)
2678 DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
2679 /* Do this after calling `common_type' so that default
2680 parameters don't confuse us. */
2681 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2682 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))
2683 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl))))
2685 TREE_TYPE (newdecl) = build_exception_variant (newtype,
2686 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)));
2687 TREE_TYPE (olddecl) = build_exception_variant (newtype,
2688 TYPE_RAISES_EXCEPTIONS (oldtype));
2690 if (! compexcepttypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
2692 cp_error ("declaration of `%D' throws different exceptions...",
2694 cp_error_at ("...from previous declaration here", olddecl);
2697 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
2699 /* Lay the type out, unless already done. */
2700 if (oldtype != TREE_TYPE (newdecl)
2701 && TREE_TYPE (newdecl) != error_mark_node
2702 && !(processing_template_decl && uses_template_parms (newdecl)))
2703 layout_type (TREE_TYPE (newdecl));
2705 if ((TREE_CODE (newdecl) == VAR_DECL
2706 || TREE_CODE (newdecl) == PARM_DECL
2707 || TREE_CODE (newdecl) == RESULT_DECL
2708 || TREE_CODE (newdecl) == FIELD_DECL
2709 || TREE_CODE (newdecl) == TYPE_DECL)
2710 && !(processing_template_decl && uses_template_parms (newdecl)))
2711 layout_decl (newdecl, 0);
2713 /* Merge the type qualifiers. */
2714 if (TREE_READONLY (newdecl))
2715 TREE_READONLY (olddecl) = 1;
2716 if (TREE_THIS_VOLATILE (newdecl))
2717 TREE_THIS_VOLATILE (olddecl) = 1;
2719 /* Merge the initialization information. */
2720 if (DECL_INITIAL (newdecl) == NULL_TREE
2721 && DECL_INITIAL (olddecl) != NULL_TREE)
2723 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
2724 DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl);
2725 DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl);
2728 /* Merge the section attribute.
2729 We want to issue an error if the sections conflict but that must be
2730 done later in decl_attributes since we are called before attributes
2732 if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
2733 DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
2735 /* Keep the old rtl since we can safely use it, unless it's the
2736 call to abort() used for abstract virtuals. */
2737 if ((DECL_LANG_SPECIFIC (olddecl)
2738 && !DECL_ABSTRACT_VIRTUAL_P (olddecl))
2739 || DECL_RTL (olddecl) != DECL_RTL (abort_fndecl))
2740 DECL_RTL (newdecl) = DECL_RTL (olddecl);
2744 /* If cannot merge, then use the new type and qualifiers,
2745 and don't preserve the old rtl. */
2748 /* Clean out any memory we had of the old declaration. */
2749 tree oldstatic = value_member (olddecl, static_aggregates);
2751 TREE_VALUE (oldstatic) = error_mark_node;
2753 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
2754 TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
2755 TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
2756 TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
2759 /* Merge the storage class information. */
2760 DECL_WEAK (newdecl) |= DECL_WEAK (olddecl);
2761 DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl);
2762 TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
2763 TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
2764 if (! DECL_EXTERNAL (olddecl))
2765 DECL_EXTERNAL (newdecl) = 0;
2767 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2768 DECL_C_STATIC (newdecl) |= DECL_C_STATIC (olddecl);
2770 if (DECL_LANG_SPECIFIC (newdecl))
2772 DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
2773 DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
2776 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2778 DECL_THIS_INLINE (newdecl) |= DECL_THIS_INLINE (olddecl);
2780 /* If either decl says `inline', this fn is inline, unless its
2781 definition was passed already. */
2782 if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE)
2783 DECL_INLINE (olddecl) = 1;
2784 DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
2788 DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl);
2789 DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl);
2790 DECL_RTL (olddecl) = DECL_RTL (newdecl);
2792 if (! types_match || new_defines_function)
2794 /* These need to be copied so that the names are available. */
2795 DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
2796 DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
2798 if (new_defines_function)
2799 /* If defining a function declared with other language
2800 linkage, use the previously declared language linkage. */
2801 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
2804 /* If redeclaring a builtin function, and not a definition,
2805 it stays built in. */
2806 if (DECL_BUILT_IN (olddecl))
2808 DECL_BUILT_IN (newdecl) = 1;
2809 DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
2810 /* If we're keeping the built-in definition, keep the rtl,
2811 regardless of declaration matches. */
2812 DECL_RTL (newdecl) = DECL_RTL (olddecl);
2815 DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl);
2817 DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
2818 if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl)))
2819 /* Previously saved insns go together with
2820 the function's previous definition. */
2821 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
2822 /* Don't clear out the arguments if we're redefining a function. */
2823 if (DECL_ARGUMENTS (olddecl))
2824 DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
2826 if (DECL_LANG_SPECIFIC (olddecl))
2827 DECL_MAIN_VARIANT (newdecl) = DECL_MAIN_VARIANT (olddecl);
2830 if (TREE_CODE (newdecl) == NAMESPACE_DECL)
2832 NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
2835 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2837 DECL_TEMPLATE_INSTANTIATIONS (newdecl)
2838 = DECL_TEMPLATE_INSTANTIATIONS (olddecl);
2839 if (DECL_CHAIN (newdecl) == NULL_TREE)
2840 DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl);
2843 /* Now preserve various other info from the definition. */
2844 TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
2845 TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
2846 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
2847 DECL_ASSEMBLER_NAME (newdecl) = DECL_ASSEMBLER_NAME (olddecl);
2849 /* Don't really know how much of the language-specific
2850 values we should copy from old to new. */
2851 if (DECL_LANG_SPECIFIC (olddecl))
2853 DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
2854 DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl);
2855 DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
2856 if (DECL_TEMPLATE_INFO (newdecl) == NULL_TREE)
2858 DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
2859 DECL_USE_TEMPLATE (newdecl) = DECL_USE_TEMPLATE (olddecl);
2863 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2866 struct lang_decl *ol = DECL_LANG_SPECIFIC (olddecl);
2867 struct lang_decl *nl = DECL_LANG_SPECIFIC (newdecl);
2869 function_size = sizeof (struct tree_decl);
2871 bcopy ((char *) newdecl + sizeof (struct tree_common),
2872 (char *) olddecl + sizeof (struct tree_common),
2873 function_size - sizeof (struct tree_common));
2875 /* Can we safely free the storage used by newdecl? */
2877 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
2878 & ~ obstack_alignment_mask (&permanent_obstack))
2880 if ((char *)newdecl + ROUND (function_size)
2881 + ROUND (sizeof (struct lang_decl))
2882 == obstack_next_free (&permanent_obstack))
2884 DECL_MAIN_VARIANT (newdecl) = olddecl;
2885 DECL_LANG_SPECIFIC (olddecl) = ol;
2886 bcopy ((char *)nl, (char *)ol, sizeof (struct lang_decl));
2888 obstack_free (&permanent_obstack, newdecl);
2890 else if (LANG_DECL_PERMANENT (ol) && ol != nl)
2892 if (DECL_MAIN_VARIANT (olddecl) == olddecl)
2894 /* Save these lang_decls that would otherwise be lost. */
2895 extern tree free_lang_decl_chain;
2896 tree free_lang_decl = (tree) ol;
2898 if (DECL_LANG_SPECIFIC (olddecl) == ol)
2901 TREE_CHAIN (free_lang_decl) = free_lang_decl_chain;
2902 free_lang_decl_chain = free_lang_decl;
2912 bcopy ((char *) newdecl + sizeof (struct tree_common),
2913 (char *) olddecl + sizeof (struct tree_common),
2914 sizeof (struct tree_decl) - sizeof (struct tree_common)
2915 + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *));
2918 DECL_UID (olddecl) = olddecl_uid;
2920 DECL_FRIEND_P (olddecl) = 1;
2925 /* Record a decl-node X as belonging to the current lexical scope.
2926 Check for errors (such as an incompatible declaration for the same
2927 name already seen in the same scope).
2929 Returns either X or an old decl for the same name.
2930 If an old decl is returned, it may have been smashed
2931 to agree with what X says. */
2938 register tree name = DECL_ASSEMBLER_NAME (x);
2939 register struct binding_level *b = current_binding_level;
2941 if (x != current_function_decl
2942 /* Don't change DECL_CONTEXT of virtual methods. */
2943 && (TREE_CODE (x) != FUNCTION_DECL || !DECL_VIRTUAL_P (x))
2944 && ! DECL_CONTEXT (x))
2945 DECL_CONTEXT (x) = current_function_decl;
2946 /* A local declaration for a function doesn't constitute nesting. */
2947 if (TREE_CODE (x) == FUNCTION_DECL && DECL_INITIAL (x) == 0)
2948 DECL_CONTEXT (x) = 0;
2950 /* Type are looked up using the DECL_NAME, as that is what the rest of the
2951 compiler wants to use. */
2952 if (TREE_CODE (x) == TYPE_DECL || TREE_CODE (x) == VAR_DECL
2953 || TREE_CODE (x) == NAMESPACE_DECL)
2954 name = DECL_NAME (x);
2959 /* Not needed...see below. */
2964 t = lookup_name_current_level (name);
2965 if (t == error_mark_node)
2967 /* error_mark_node is 0 for a while during initialization! */
2969 cp_error_at ("`%#D' used prior to declaration", x);
2972 else if (t != NULL_TREE)
2975 /* This is turned off until I have time to do it right (bpk). */
2976 /* With the code below that uses it... */
2977 file = DECL_SOURCE_FILE (t);
2978 line = DECL_SOURCE_LINE (t);
2980 if (TREE_CODE (t) == PARM_DECL)
2982 if (DECL_CONTEXT (t) == NULL_TREE)
2983 fatal ("parse errors have confused me too much");
2985 /* Check for duplicate params. */
2986 if (duplicate_decls (x, t))
2989 else if (((TREE_CODE (x) == FUNCTION_DECL && DECL_LANGUAGE (x) == lang_c)
2990 || DECL_FUNCTION_TEMPLATE_P (x))
2991 && is_overloaded_fn (t))
2992 /* don't do anything just yet */;
2993 else if (t == wchar_decl_node)
2995 if (pedantic && ! DECL_IN_SYSTEM_HEADER (x))
2996 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x));
2998 /* Throw away the redeclaration. */
3001 else if (TREE_CODE (t) != TREE_CODE (x))
3003 if ((TREE_CODE (t) == TYPE_DECL && DECL_ARTIFICIAL (t)
3004 && TREE_CODE (x) != TYPE_DECL
3005 && ! (TREE_CODE (x) == TEMPLATE_DECL
3006 && TREE_CODE (DECL_TEMPLATE_RESULT (x)) == TYPE_DECL))
3007 || (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3008 && TREE_CODE (t) != TYPE_DECL
3009 && ! (TREE_CODE (t) == TEMPLATE_DECL
3010 && (TREE_CODE (DECL_TEMPLATE_RESULT (t))
3013 /* We do nothing special here, because C++ does such nasty
3014 things with TYPE_DECLs. Instead, just let the TYPE_DECL
3015 get shadowed, and know that if we need to find a TYPE_DECL
3016 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
3017 slot of the identifier. */
3020 else if (duplicate_decls (x, t))
3023 else if (duplicate_decls (x, t))
3026 /* This is turned off until I have time to do it right (bpk). */
3028 /* Also warn if they did a prototype with `static' on it, but
3029 then later left the `static' off. */
3030 if (! TREE_PUBLIC (name) && TREE_PUBLIC (x))
3032 if (DECL_LANG_SPECIFIC (t) && DECL_FRIEND_P (t))
3037 cp_warning ("`static' missing from declaration of `%D'",
3039 warning_with_file_and_line (file, line,
3040 "previous declaration of `%s'",
3041 decl_as_string (t, 0));
3044 /* Now fix things so it'll do what they expect. */
3045 if (current_function_decl)
3046 TREE_PUBLIC (current_function_decl) = 0;
3048 /* Due to interference in memory reclamation (X may be
3049 obstack-deallocated at this point), we must guard against
3050 one really special case. [jason: This should be handled
3051 by start_function] */
3052 if (current_function_decl == x)
3053 current_function_decl = t;
3055 if (TREE_CODE (t) == TYPE_DECL)
3056 SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t));
3057 else if (TREE_CODE (t) == FUNCTION_DECL)
3058 check_default_args (t);
3064 if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_FUNCTION_MEMBER_P (x))
3066 t = push_overloaded_decl (x, 1);
3067 if (t != x || DECL_LANGUAGE (x) == lang_c)
3070 else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_CONTEXT (x) == NULL_TREE)
3071 return push_overloaded_decl (x, 0);
3073 /* If declaring a type as a typedef, and the type has no known
3074 typedef name, install this TYPE_DECL as its typedef name. */
3075 if (TREE_CODE (x) == TYPE_DECL)
3077 tree type = TREE_TYPE (x);
3078 tree name = (type != error_mark_node) ? TYPE_NAME (type) : x;
3080 if (name == NULL_TREE || TREE_CODE (name) != TYPE_DECL)
3082 /* If these are different names, and we're at the global
3083 binding level, make two equivalent definitions. */
3085 if (global_bindings_p ())
3086 TYPE_NAME (type) = x;
3090 tree tname = DECL_NAME (name);
3092 /* This is a disgusting kludge for dealing with UPTs. */
3093 if (global_bindings_p () && ANON_AGGRNAME_P (tname))
3095 /* do gratuitous C++ typedefing, and make sure that
3096 we access this type either through TREE_TYPE field
3097 or via the tags list. */
3098 TYPE_NAME (TREE_TYPE (x)) = x;
3099 pushtag (tname, TREE_TYPE (x), 0);
3102 my_friendly_assert (TREE_CODE (name) == TYPE_DECL, 140);
3104 if (type != error_mark_node
3106 && TYPE_IDENTIFIER (type))
3107 set_identifier_type_value_with_scope (DECL_NAME (x), type, b);
3110 /* Multiple external decls of the same identifier ought to match.
3112 We get warnings about inline functions where they are defined.
3113 We get warnings about other functions from push_overloaded_decl.
3115 Avoid duplicate warnings where they are used. */
3116 if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL)
3120 if (IDENTIFIER_GLOBAL_VALUE (name) != NULL_TREE
3121 && (DECL_EXTERNAL (IDENTIFIER_GLOBAL_VALUE (name))
3122 || TREE_PUBLIC (IDENTIFIER_GLOBAL_VALUE (name))))
3123 decl = IDENTIFIER_GLOBAL_VALUE (name);
3128 /* If different sort of thing, we already gave an error. */
3129 && TREE_CODE (decl) == TREE_CODE (x)
3130 && ! comptypes (TREE_TYPE (x), TREE_TYPE (decl), 1))
3132 cp_pedwarn ("type mismatch with previous external decl", x);
3133 cp_pedwarn_at ("previous external decl of `%#D'", decl);
3137 /* This name is new in its binding level.
3138 Install the new declaration and return it. */
3139 if (b == global_binding_level)
3141 /* Install a global value. */
3143 /* If the first global decl has external linkage,
3144 warn if we later see static one. */
3145 if (IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE && DECL_PUBLIC (x))
3146 TREE_PUBLIC (name) = 1;
3148 /* Don't install an artificial TYPE_DECL if we already have
3149 another _DECL with that name. */
3150 if (TREE_CODE (x) != TYPE_DECL
3152 || ! DECL_ARTIFICIAL (x))
3153 IDENTIFIER_GLOBAL_VALUE (name) = x;
3155 /* Don't forget if the function was used via an implicit decl. */
3156 if (IDENTIFIER_IMPLICIT_DECL (name)
3157 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name)))
3160 /* Don't forget if its address was taken in that way. */
3161 if (IDENTIFIER_IMPLICIT_DECL (name)
3162 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name)))
3163 TREE_ADDRESSABLE (x) = 1;
3165 /* Warn about mismatches against previous implicit decl. */
3166 if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE
3167 /* If this real decl matches the implicit, don't complain. */
3168 && ! (TREE_CODE (x) == FUNCTION_DECL
3169 && TREE_TYPE (TREE_TYPE (x)) == integer_type_node))
3171 ("`%D' was previously implicitly declared to return `int'", x);
3173 /* If new decl is `static' and an `extern' was seen previously,
3175 if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t))
3176 warn_extern_redeclared_static (x, t);
3180 /* Here to install a non-global value. */
3181 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
3182 tree oldglobal = IDENTIFIER_GLOBAL_VALUE (name);
3184 /* Don't install an artificial TYPE_DECL if we already have
3185 another _DECL with that name. */
3186 if (TREE_CODE (x) != TYPE_DECL
3188 || ! DECL_ARTIFICIAL (x))
3190 b->shadowed = tree_cons (name, oldlocal, b->shadowed);
3191 IDENTIFIER_LOCAL_VALUE (name) = x;
3194 /* If this is a TYPE_DECL, push it into the type value slot. */
3195 if (TREE_CODE (x) == TYPE_DECL)
3196 set_identifier_type_value_with_scope (name, TREE_TYPE (x), b);
3198 /* Clear out any TYPE_DECL shadowed by a namespace so that
3199 we won't think this is a type. The C struct hack doesn't
3200 go through namespaces. */
3201 if (TREE_CODE (x) == NAMESPACE_DECL)
3202 set_identifier_type_value_with_scope (name, NULL_TREE, b);
3204 /* If this is an extern function declaration, see if we
3205 have a global definition or declaration for the function. */
3206 if (oldlocal == NULL_TREE
3207 && DECL_EXTERNAL (x)
3208 && oldglobal != NULL_TREE
3209 && TREE_CODE (x) == FUNCTION_DECL
3210 && TREE_CODE (oldglobal) == FUNCTION_DECL)
3212 /* We have one. Their types must agree. */
3213 if (decls_match (x, oldglobal))
3217 cp_warning ("extern declaration of `%#D' doesn't match", x);
3218 cp_warning_at ("global declaration `%#D'", oldglobal);
3221 /* If we have a local external declaration,
3222 and no file-scope declaration has yet been seen,
3223 then if we later have a file-scope decl it must not be static. */
3224 if (oldlocal == NULL_TREE
3225 && oldglobal == NULL_TREE
3226 && DECL_EXTERNAL (x)
3229 TREE_PUBLIC (name) = 1;
3232 if (DECL_FROM_INLINE (x))
3233 /* Inline decls shadow nothing. */;
3235 /* Warn if shadowing an argument at the top level of the body. */
3236 else if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x)
3237 && TREE_CODE (oldlocal) == PARM_DECL
3238 && TREE_CODE (x) != PARM_DECL)
3240 /* Go to where the parms should be and see if we
3242 struct binding_level *b = current_binding_level->level_chain;
3248 if (b->parm_flag == 1)
3249 cp_error ("declaration of `%#D' shadows a parameter", name);
3251 else if (warn_shadow && oldlocal != NULL_TREE && b->is_for_scope
3252 && !DECL_DEAD_FOR_LOCAL (oldlocal))
3254 warning ("variable `%s' shadows local",
3255 IDENTIFIER_POINTER (name));
3256 cp_warning_at (" this is the shadowed declaration", oldlocal);
3258 /* Maybe warn if shadowing something else. */
3259 else if (warn_shadow && !DECL_EXTERNAL (x)
3260 /* No shadow warnings for internally generated vars. */
3261 && ! DECL_ARTIFICIAL (x)
3262 /* No shadow warnings for vars made for inlining. */
3263 && ! DECL_FROM_INLINE (x))
3265 char *warnstring = NULL;
3267 if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL)
3268 warnstring = "declaration of `%s' shadows a parameter";
3269 else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE
3270 && current_class_ptr
3271 && !TREE_STATIC (name))
3272 warnstring = "declaration of `%s' shadows a member of `this'";
3273 else if (oldlocal != NULL_TREE)
3274 warnstring = "declaration of `%s' shadows previous local";
3275 else if (oldglobal != NULL_TREE)
3276 warnstring = "declaration of `%s' shadows global declaration";
3279 warning (warnstring, IDENTIFIER_POINTER (name));
3283 if (TREE_CODE (x) == FUNCTION_DECL)
3284 check_default_args (x);
3286 /* Keep count of variables in this level with incomplete type. */
3287 if (TREE_CODE (x) == VAR_DECL
3288 && TREE_TYPE (x) != error_mark_node
3289 && ((TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE
3290 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE))
3291 /* RTTI TD entries are created while defining the type_info. */
3292 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x))
3293 && TYPE_BEING_DEFINED (TREE_TYPE (x)))))
3294 b->incomplete = tree_cons (NULL_TREE, x, b->incomplete);
3297 /* Put decls on list in reverse order.
3298 We will reverse them later if necessary. */
3299 TREE_CHAIN (x) = b->names;
3301 if (! (b != global_binding_level || TREE_PERMANENT (x)))
3302 my_friendly_abort (124);
3307 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3308 caller to set DECL_CONTEXT properly. */
3311 pushdecl_with_scope (x, level)
3313 struct binding_level *level;
3315 register struct binding_level *b = current_binding_level;
3316 tree function_decl = current_function_decl;
3318 current_function_decl = NULL_TREE;
3319 current_binding_level = level;
3321 current_binding_level = b;
3322 current_function_decl = function_decl;
3326 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3330 pushdecl_top_level (x)
3333 register struct binding_level *b = inner_binding_level;
3334 register tree t = pushdecl_with_scope (x, global_binding_level);
3336 /* Now, the type_shadowed stack may screw us. Munge it so it does
3338 if (TREE_CODE (x) == TYPE_DECL)
3340 tree name = DECL_NAME (x);
3342 tree *ptr = (tree *)0;
3343 for (; b != global_binding_level; b = b->level_chain)
3345 tree shadowed = b->type_shadowed;
3346 for (; shadowed; shadowed = TREE_CHAIN (shadowed))
3347 if (TREE_PURPOSE (shadowed) == name)
3349 ptr = &TREE_VALUE (shadowed);
3350 /* Can't break out of the loop here because sometimes
3351 a binding level will have duplicate bindings for
3352 PT names. It's gross, but I haven't time to fix it. */
3355 newval = TREE_TYPE (x);
3356 if (ptr == (tree *)0)
3358 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3359 up here if this is changed to an assertion. --KR */
3360 SET_IDENTIFIER_TYPE_VALUE (name, newval);
3370 /* Like push_overloaded_decl, only it places X in GLOBAL_BINDING_LEVEL,
3374 push_overloaded_decl_top_level (x, forget)
3378 struct binding_level *b = current_binding_level;
3380 current_binding_level = global_binding_level;
3381 push_overloaded_decl (x, forget);
3382 current_binding_level = b;
3385 /* Make the declaration of X appear in CLASS scope. */
3388 pushdecl_class_level (x)
3391 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3392 scope looks for the pre-mangled name. */
3393 register tree name = DECL_NAME (x);
3397 if (TYPE_BEING_DEFINED (current_class_type))
3399 /* Check for inconsistent use of this name in the class body.
3400 Types, enums, and static vars are checked here; other
3401 members are checked in finish_struct. */
3402 tree icv = IDENTIFIER_CLASS_VALUE (name);
3405 /* Don't complain about inherited names. */
3406 && id_in_current_class (name)
3407 /* Or shadowed tags. */
3408 && !(TREE_CODE (icv) == TYPE_DECL
3409 && DECL_CONTEXT (icv) == current_class_type))
3411 cp_error ("declaration of identifier `%D' as `%#D'", name, x);
3412 cp_error_at ("conflicts with previous use in class as `%#D'",
3417 push_class_level_binding (name, x);
3418 if (TREE_CODE (x) == TYPE_DECL)
3420 set_identifier_type_value (name, TREE_TYPE (x));
3426 /* This function is used to push the mangled decls for nested types into
3427 the appropriate scope. Previously pushdecl_top_level was used, but that
3428 is incorrect for members of local classes. */
3431 pushdecl_nonclass_level (x)
3434 struct binding_level *b = current_binding_level;
3436 my_friendly_assert (b->parm_flag != 2, 180);
3439 /* Get out of template binding levels */
3440 while (b->pseudo_global)
3444 pushdecl_with_scope (x, b);
3447 /* Make the declaration(s) of X appear in CLASS scope
3448 under the name NAME. */
3451 push_class_level_binding (name, x)
3455 if (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3456 && purpose_member (name, class_binding_level->class_shadowed))
3459 maybe_push_cache_obstack ();
3460 class_binding_level->class_shadowed
3461 = tree_cons (name, IDENTIFIER_CLASS_VALUE (name),
3462 class_binding_level->class_shadowed);
3464 IDENTIFIER_CLASS_VALUE (name) = x;
3465 obstack_ptr_grow (&decl_obstack, x);
3468 /* Tell caller how to interpret a TREE_LIST which contains
3469 chains of FUNCTION_DECLS. */
3472 overloaded_globals_p (list)
3475 my_friendly_assert (TREE_CODE (list) == TREE_LIST, 142);
3477 /* Don't commit caller to seeing them as globals. */
3478 if (TREE_NONLOCAL_FLAG (list))
3480 /* Do commit caller to not seeing them as globals. */
3481 if (TREE_CODE (TREE_VALUE (list)) == TREE_LIST)
3483 /* Do commit caller to seeing them as globals. */
3487 /* DECL is a FUNCTION_DECL which may have other definitions already in
3488 place. We get around this by making the value of the identifier point
3489 to a list of all the things that want to be referenced by that name. It
3490 is then up to the users of that name to decide what to do with that
3493 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3494 slot. It is dealt with the same way.
3496 The value returned may be a previous declaration if we guessed wrong
3497 about what language DECL should belong to (C or C++). Otherwise,
3498 it's always DECL (and never something that's not a _DECL). */
3501 push_overloaded_decl (decl, forgettable)
3505 tree orig_name = DECL_NAME (decl);
3507 int doing_global = (global_bindings_p () || ! forgettable);
3511 old = IDENTIFIER_GLOBAL_VALUE (orig_name);
3512 if (old && TREE_CODE (old) == FUNCTION_DECL
3513 && DECL_ARTIFICIAL (old)
3514 && (DECL_BUILT_IN (old) || DECL_BUILT_IN_NONANSI (old)))
3516 if (duplicate_decls (decl, old))
3523 old = IDENTIFIER_LOCAL_VALUE (orig_name);
3525 if (! purpose_member (orig_name, current_binding_level->shadowed))
3527 current_binding_level->shadowed
3528 = tree_cons (orig_name, old, current_binding_level->shadowed);
3535 if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old))
3537 tree t = TREE_TYPE (old);
3538 if (IS_AGGR_TYPE (t) && warn_shadow
3539 && (! DECL_IN_SYSTEM_HEADER (decl)
3540 || ! DECL_IN_SYSTEM_HEADER (old)))
3541 cp_warning ("`%#D' hides constructor for `%#T'", decl, t);
3544 else if (is_overloaded_fn (old))
3548 for (tmp = get_first_fn (old); tmp; tmp = DECL_CHAIN (tmp))
3549 if (decl == tmp || duplicate_decls (decl, tmp))
3554 cp_error_at ("previous non-function declaration `%#D'", old);
3555 cp_error ("conflicts with function declaration `%#D'", decl);
3560 if (old || TREE_CODE (decl) == TEMPLATE_DECL)
3562 if (old && is_overloaded_fn (old))
3563 DECL_CHAIN (decl) = get_first_fn (old);
3565 DECL_CHAIN (decl) = NULL_TREE;
3566 old = tree_cons (orig_name, decl, NULL_TREE);
3567 TREE_TYPE (old) = unknown_type_node;
3570 /* orig_name is not ambiguous. */
3574 IDENTIFIER_GLOBAL_VALUE (orig_name) = old;
3576 IDENTIFIER_LOCAL_VALUE (orig_name) = old;
3581 /* Generate an implicit declaration for identifier FUNCTIONID
3582 as a function of type int (). Print a warning if appropriate. */
3585 implicitly_declare (functionid)
3589 int temp = allocation_temporary_p ();
3591 push_obstacks_nochange ();
3593 /* Save the decl permanently so we can warn if definition follows.
3594 In ANSI C, warn_implicit is usually false, so the saves little space.
3595 But in C++, it's usually true, hence the extra code. */
3596 if (temp && (! warn_implicit || toplevel_bindings_p ()))
3597 end_temporary_allocation ();
3599 /* We used to reuse an old implicit decl here,
3600 but this loses with inline functions because it can clobber
3601 the saved decl chains. */
3602 decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type);
3604 DECL_EXTERNAL (decl) = 1;
3605 TREE_PUBLIC (decl) = 1;
3607 /* ANSI standard says implicit declarations are in the innermost block.
3608 So we record the decl in the standard fashion. */
3610 rest_of_decl_compilation (decl, NULL_PTR, 0, 0);
3613 /* Only one warning per identifier. */
3614 && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE)
3616 cp_pedwarn ("implicit declaration of function `%#D'", decl);
3619 SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl);
3626 /* Return zero if the declaration NEWDECL is valid
3627 when the declaration OLDDECL (assumed to be for the same name)
3628 has already been seen.
3629 Otherwise return an error message format string with a %s
3630 where the identifier should go. */
3633 redeclaration_error_message (newdecl, olddecl)
3634 tree newdecl, olddecl;
3636 if (TREE_CODE (newdecl) == TYPE_DECL)
3638 /* Because C++ can put things into name space for free,
3639 constructs like "typedef struct foo { ... } foo"
3640 would look like an erroneous redeclaration. */
3641 if (comptypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl), 0))
3644 return "redefinition of `%#D'";
3646 else if (TREE_CODE (newdecl) == FUNCTION_DECL)
3648 /* If this is a pure function, its olddecl will actually be
3649 the original initialization to `0' (which we force to call
3650 abort()). Don't complain about redefinition in this case. */
3651 if (DECL_LANG_SPECIFIC (olddecl) && DECL_ABSTRACT_VIRTUAL_P (olddecl))
3654 /* We'll complain about linkage mismatches in
3655 warn_extern_redeclared_static. */
3657 /* defining the same name twice is no good. */
3658 if (DECL_INITIAL (olddecl) != NULL_TREE
3659 && DECL_INITIAL (newdecl) != NULL_TREE)
3661 if (DECL_NAME (olddecl) == NULL_TREE)
3662 return "`%#D' not declared in class";
3664 return "redefinition of `%#D'";
3668 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
3670 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
3671 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl))
3672 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)))
3673 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL
3674 && TYPE_SIZE (TREE_TYPE (newdecl))
3675 && TYPE_SIZE (TREE_TYPE (olddecl))))
3676 return "redefinition of `%#D'";
3679 else if (toplevel_bindings_p ())
3681 /* Objects declared at top level: */
3682 /* If at least one is a reference, it's ok. */
3683 if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
3685 /* Reject two definitions. */
3686 return "redefinition of `%#D'";
3690 /* Objects declared with block scope: */
3691 /* Reject two definitions, and reject a definition
3692 together with an external reference. */
3693 if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
3694 return "redeclaration of `%#D'";
3699 /* Get the LABEL_DECL corresponding to identifier ID as a label.
3700 Create one if none exists so far for the current function.
3701 This function is called for both label definitions and label references. */
3707 register tree decl = IDENTIFIER_LABEL_VALUE (id);
3709 if (current_function_decl == NULL_TREE)
3711 error ("label `%s' referenced outside of any function",
3712 IDENTIFIER_POINTER (id));
3716 if ((decl == NULL_TREE
3717 || DECL_SOURCE_LINE (decl) == 0)
3718 && (named_label_uses == NULL
3719 || named_label_uses->names_in_scope != current_binding_level->names
3720 || named_label_uses->label_decl != decl))
3722 struct named_label_list *new_ent;
3724 = (struct named_label_list*)oballoc (sizeof (struct named_label_list));
3725 new_ent->label_decl = decl;
3726 new_ent->names_in_scope = current_binding_level->names;
3727 new_ent->binding_level = current_binding_level;
3728 new_ent->lineno_o_goto = lineno;
3729 new_ent->filename_o_goto = input_filename;
3730 new_ent->next = named_label_uses;
3731 named_label_uses = new_ent;
3734 /* Use a label already defined or ref'd with this name. */
3735 if (decl != NULL_TREE)
3737 /* But not if it is inherited and wasn't declared to be inheritable. */
3738 if (DECL_CONTEXT (decl) != current_function_decl
3739 && ! C_DECLARED_LABEL_FLAG (decl))
3740 return shadow_label (id);
3744 decl = build_decl (LABEL_DECL, id, void_type_node);
3746 /* Make sure every label has an rtx. */
3749 /* A label not explicitly declared must be local to where it's ref'd. */
3750 DECL_CONTEXT (decl) = current_function_decl;
3752 DECL_MODE (decl) = VOIDmode;
3754 /* Say where one reference is to the label,
3755 for the sake of the error if it is not defined. */
3756 DECL_SOURCE_LINE (decl) = lineno;
3757 DECL_SOURCE_FILE (decl) = input_filename;
3759 SET_IDENTIFIER_LABEL_VALUE (id, decl);
3761 named_labels = tree_cons (NULL_TREE, decl, named_labels);
3762 named_label_uses->label_decl = decl;
3767 /* Make a label named NAME in the current function,
3768 shadowing silently any that may be inherited from containing functions
3769 or containing scopes.
3771 Note that valid use, if the label being shadowed
3772 comes from another scope in the same function,
3773 requires calling declare_nonlocal_label right away. */
3779 register tree decl = IDENTIFIER_LABEL_VALUE (name);
3781 if (decl != NULL_TREE)
3783 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
3784 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
3785 SET_IDENTIFIER_LABEL_VALUE (decl, NULL_TREE);
3788 return lookup_label (name);
3791 /* Define a label, specifying the location in the source file.
3792 Return the LABEL_DECL node for the label, if the definition is valid.
3793 Otherwise return 0. */
3796 define_label (filename, line, name)
3803 if (minimal_parse_mode)
3805 push_obstacks (&permanent_obstack, &permanent_obstack);
3806 decl = build_decl (LABEL_DECL, name, void_type_node);
3808 DECL_SOURCE_LINE (decl) = line;
3809 DECL_SOURCE_FILE (decl) = filename;
3814 decl = lookup_label (name);
3816 /* After labels, make any new cleanups go into their
3817 own new (temporary) binding contour. */
3818 current_binding_level->more_cleanups_ok = 0;
3820 /* If label with this name is known from an outer context, shadow it. */
3821 if (decl != NULL_TREE && DECL_CONTEXT (decl) != current_function_decl)
3823 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
3824 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
3825 decl = lookup_label (name);
3828 if (name == get_identifier ("wchar_t"))
3829 cp_pedwarn ("label named wchar_t");
3831 if (DECL_INITIAL (decl) != NULL_TREE)
3833 cp_error ("duplicate label `%D'", decl);
3838 struct named_label_list *uses, *prev;
3841 /* Mark label as having been defined. */
3842 DECL_INITIAL (decl) = error_mark_node;
3843 /* Say where in the source. */
3844 DECL_SOURCE_FILE (decl) = filename;
3845 DECL_SOURCE_LINE (decl) = line;
3848 uses = named_label_uses;
3849 while (uses != NULL)
3850 if (uses->label_decl == decl)
3852 struct binding_level *b = current_binding_level;
3855 tree new_decls = b->names;
3856 tree old_decls = (b == uses->binding_level)
3857 ? uses->names_in_scope : NULL_TREE;
3858 while (new_decls != old_decls)
3860 if (TREE_CODE (new_decls) == VAR_DECL
3861 /* Don't complain about crossing initialization
3862 of internal entities. They can't be accessed,
3863 and they should be cleaned up
3864 by the time we get to the label. */
3865 && ! DECL_ARTIFICIAL (new_decls)
3866 && ((DECL_INITIAL (new_decls) != NULL_TREE
3867 && DECL_INITIAL (new_decls) != error_mark_node)
3868 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
3872 cp_error ("jump to label `%D'", decl);
3873 error_with_file_and_line (uses->filename_o_goto,
3874 uses->lineno_o_goto,
3878 cp_error_at (" crosses initialization of `%#D'",
3881 new_decls = TREE_CHAIN (new_decls);
3883 if (b == uses->binding_level)
3889 prev->next = uses->next;
3891 named_label_uses = uses->next;
3900 current_function_return_value = NULL_TREE;
3907 struct binding_level *level;
3908 struct cp_switch *next;
3911 static struct cp_switch *switch_stack;
3917 = (struct cp_switch *) oballoc (sizeof (struct cp_switch));
3918 p->level = current_binding_level;
3919 p->next = switch_stack;
3926 switch_stack = switch_stack->next;
3929 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
3930 /* XXX Note decl is never actually used. (bpk) */
3933 define_case_label (decl)
3936 tree cleanup = last_cleanup_this_contour ();
3937 struct binding_level *b = current_binding_level;
3942 static int explained = 0;
3943 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup));
3944 warning ("where case label appears here");
3947 warning ("(enclose actions of previous case statements requiring");
3948 warning ("destructors in their own binding contours.)");
3953 for (; b && b != switch_stack->level; b = b->level_chain)
3955 tree new_decls = b->names;
3956 for (; new_decls; new_decls = TREE_CHAIN (new_decls))
3958 if (TREE_CODE (new_decls) == VAR_DECL
3959 /* Don't complain about crossing initialization
3960 of internal entities. They can't be accessed,
3961 and they should be cleaned up
3962 by the time we get to the label. */
3963 && ! DECL_ARTIFICIAL (new_decls)
3964 && ((DECL_INITIAL (new_decls) != NULL_TREE
3965 && DECL_INITIAL (new_decls) != error_mark_node)
3966 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
3969 error ("jump to case label");
3971 cp_error_at (" crosses initialization of `%#D'",
3977 /* After labels, make any new cleanups go into their
3978 own new (temporary) binding contour. */
3980 current_binding_level->more_cleanups_ok = 0;
3981 current_function_return_value = NULL_TREE;
3984 /* Return the list of declarations of the current level.
3985 Note that this list is in reverse order unless/until
3986 you nreverse it; and when you do nreverse it, you must
3987 store the result back using `storedecls' or you will lose. */
3992 return current_binding_level->names;
3995 /* Return the list of type-tags (for structs, etc) of the current level. */
4000 return current_binding_level->tags;
4003 /* Store the list of declarations of the current level.
4004 This is done for the parameter declarations of a function being defined,
4005 after they are modified in the light of any missing parameters. */
4011 current_binding_level->names = decls;
4014 /* Similarly, store the list of tags of the current level. */
4020 current_binding_level->tags = tags;
4023 /* Given NAME, an IDENTIFIER_NODE,
4024 return the structure (or union or enum) definition for that name.
4025 Searches binding levels from BINDING_LEVEL up to the global level.
4026 If THISLEVEL_ONLY is nonzero, searches only the specified context
4027 (but skips any tag-transparent contexts to find one that is
4028 meaningful for tags).
4029 FORM says which kind of type the caller wants;
4030 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4031 If the wrong kind of type is found, and it's not a template, an error is
4035 lookup_tag (form, name, binding_level, thislevel_only)
4036 enum tree_code form;
4038 struct binding_level *binding_level;
4041 register struct binding_level *level;
4043 for (level = binding_level; level; level = level->level_chain)
4046 if (ANON_AGGRNAME_P (name))
4047 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4049 /* There's no need for error checking here, because
4050 anon names are unique throughout the compilation. */
4051 if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name)
4052 return TREE_VALUE (tail);
4055 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4057 if (TREE_PURPOSE (tail) == name)
4059 enum tree_code code = TREE_CODE (TREE_VALUE (tail));
4060 /* Should tighten this up; it'll probably permit
4061 UNION_TYPE and a struct template, for example. */
4063 && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL))
4065 /* Definition isn't the kind we were looking for. */
4066 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail),
4070 return TREE_VALUE (tail);
4073 if (thislevel_only && ! level->tag_transparent)
4075 if (level->pseudo_global)
4077 tree t = IDENTIFIER_GLOBAL_VALUE (name);
4078 if (t && TREE_CODE (t) == TEMPLATE_DECL
4079 && TREE_CODE (DECL_TEMPLATE_RESULT (t)) == TYPE_DECL)
4080 return TREE_TYPE (t);
4084 if (current_class_type && level->level_chain == global_binding_level)
4086 /* Try looking in this class's tags before heading into
4087 global binding level. */
4088 tree context = current_class_type;
4091 switch (TREE_CODE_CLASS (TREE_CODE (context)))
4095 these_tags = CLASSTYPE_TAGS (context);
4096 if (ANON_AGGRNAME_P (name))
4099 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags))
4101 return TREE_VALUE (tail);
4102 these_tags = TREE_CHAIN (these_tags);
4107 if (TREE_PURPOSE (these_tags) == name)
4109 if (TREE_CODE (TREE_VALUE (these_tags)) != form)
4111 cp_error ("`%#D' redeclared as %C in class scope",
4112 TREE_VALUE (tail), form);
4115 return TREE_VALUE (tail);
4117 these_tags = TREE_CHAIN (these_tags);
4119 /* If this type is not yet complete, then don't
4120 look at its context. */
4121 if (TYPE_SIZE (context) == NULL_TREE)
4123 /* Go to next enclosing type, if any. */
4124 context = DECL_CONTEXT (TYPE_NAME (context));
4127 context = DECL_CONTEXT (context);
4130 my_friendly_abort (10);
4142 set_current_level_tags_transparency (tags_transparent)
4143 int tags_transparent;
4145 current_binding_level->tag_transparent = tags_transparent;
4148 /* Given a type, find the tag that was defined for it and return the tag name.
4149 Otherwise return 0. However, the value can never be 0
4150 in the cases in which this is used.
4152 C++: If NAME is non-zero, this is the new name to install. This is
4153 done when replacing anonymous tags with real tag names. */
4156 lookup_tag_reverse (type, name)
4160 register struct binding_level *level;
4162 for (level = current_binding_level; level; level = level->level_chain)
4165 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4167 if (TREE_VALUE (tail) == type)
4170 TREE_PURPOSE (tail) = name;
4171 return TREE_PURPOSE (tail);
4178 /* Given type TYPE which was not declared in C++ language context,
4179 attempt to find a name by which it is referred. */
4182 typedecl_for_tag (tag)
4185 struct binding_level *b = current_binding_level;
4187 if (TREE_CODE (TYPE_NAME (tag)) == TYPE_DECL)
4188 return TYPE_NAME (tag);
4192 tree decls = b->names;
4195 if (TREE_CODE (decls) == TYPE_DECL && TREE_TYPE (decls) == tag)
4197 decls = TREE_CHAIN (decls);
4206 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4207 Return the type value, or NULL_TREE if not found. */
4210 lookup_nested_type (type, context)
4214 if (context == NULL_TREE)
4218 switch (TREE_CODE (context))
4222 tree ctype = TREE_TYPE (context);
4223 tree match = value_member (type, CLASSTYPE_TAGS (ctype));
4225 return TREE_VALUE (match);
4226 context = DECL_CONTEXT (context);
4228 /* When we have a nested class whose member functions have
4229 local types (e.g., a set of enums), we'll arrive here
4230 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4231 the enclosing class. Instead, we want to make sure we
4232 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4233 if (context && TREE_CODE (context) == RECORD_TYPE)
4234 context = TREE_CHAIN (context);
4238 if (TYPE_NAME (type) && TYPE_IDENTIFIER (type))
4239 return lookup_name (TYPE_IDENTIFIER (type), 1);
4242 my_friendly_abort (12);
4248 /* Look up NAME in the NAMESPACE. */
4251 lookup_namespace_name (namespace, name)
4252 tree namespace, name;
4254 struct binding_level *b = (struct binding_level *)NAMESPACE_LEVEL (namespace);
4258 /* This searches just one level. */
4261 for (x = b->names; x; x = TREE_CHAIN (x))
4262 if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name)
4266 /* This searches all levels. */
4267 for (; b && !x; b = b->level_chain)
4269 for (x = b->names; x; x = TREE_CHAIN (x))
4270 if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name)
4278 make_typename_type (context, name)
4283 if (TREE_CODE (name) == TYPE_DECL)
4284 name = DECL_NAME (name);
4285 else if (TREE_CODE (name) != IDENTIFIER_NODE)
4286 my_friendly_abort (2000);
4288 if (! processing_template_decl
4289 || ! uses_template_parms (context)
4290 || context == current_class_type)
4292 t = lookup_field (context, name, 0, 1);
4295 cp_error ("no type named `%#T' in `%#T'", name, context);
4296 return error_mark_node;
4298 return TREE_TYPE (t);
4301 if (processing_template_decl)
4302 push_obstacks (&permanent_obstack, &permanent_obstack);
4303 t = make_lang_type (TYPENAME_TYPE);
4304 d = build_decl (TYPE_DECL, name, t);
4305 if (processing_template_decl)
4308 TYPE_CONTEXT (t) = context;
4309 TYPE_MAIN_DECL (TREE_TYPE (d)) = d;
4310 DECL_CONTEXT (d) = context;
4311 CLASSTYPE_GOT_SEMICOLON (t) = 1;
4316 /* Look up NAME in the current binding level and its superiors in the
4317 namespace of variables, functions and typedefs. Return a ..._DECL
4318 node of some kind representing its definition if there is only one
4319 such declaration, or return a TREE_LIST with all the overloaded
4320 definitions if there are many, or return 0 if it is undefined.
4322 If PREFER_TYPE is > 0, we prefer TYPE_DECLs.
4323 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4324 Otherwise we prefer non-TYPE_DECLs. */
4327 lookup_name_real (name, prefer_type, nonclass)
4329 int prefer_type, nonclass;
4333 tree from_obj = NULL_TREE;
4334 tree locval, classval;
4336 if (prefer_type == -2)
4338 extern int looking_for_typename;
4339 tree type = NULL_TREE;
4342 prefer_type = looking_for_typename;
4346 else if (got_object != error_mark_node)
4351 if (type == error_mark_node)
4352 return error_mark_node;
4353 if (TREE_CODE (type) == TYPENAME_TYPE && TREE_TYPE (type))
4354 type = TREE_TYPE (type);
4356 type = complete_type (type);
4358 if (type == void_type_node)
4359 val = IDENTIFIER_GLOBAL_VALUE (name);
4360 else if (TREE_CODE (type) == NAMESPACE_DECL)
4362 val = lookup_namespace_name (type, name);
4364 else if (! IS_AGGR_TYPE (type)
4365 || TREE_CODE (type) == TEMPLATE_TYPE_PARM
4366 || TREE_CODE (type) == TYPENAME_TYPE)
4367 /* Someone else will give an error about this if needed. */
4369 else if (TYPE_BEING_DEFINED (type))
4371 val = IDENTIFIER_CLASS_VALUE (name);
4372 if (val && DECL_CONTEXT (val) != type)
4374 struct binding_level *b = class_binding_level;
4375 for (val = NULL_TREE; b; b = b->level_chain)
4377 tree t = purpose_member (name, b->class_shadowed);
4378 if (t && TREE_VALUE (t)
4379 && DECL_CONTEXT (TREE_VALUE (t)) == type)
4381 val = TREE_VALUE (t);
4386 if (val == NULL_TREE)
4387 val = lookup_field (type, name, 0, 1);
4389 else if (type == current_class_type)
4390 val = IDENTIFIER_CLASS_VALUE (name);
4392 val = lookup_field (type, name, 0, prefer_type);
4398 if (got_scope && processing_template_decl
4399 && got_scope != current_class_type
4400 && uses_template_parms (got_scope)
4401 && val && TREE_CODE (val) == TYPE_DECL
4402 && ! DECL_ARTIFICIAL (val))
4404 tree t = make_typename_type (got_scope, DECL_NAME (val));
4405 TREE_TYPE (t) = TREE_TYPE (val);
4406 val = TYPE_MAIN_DECL (t);
4412 else if (got_object && val)
4416 locval = classval = NULL_TREE;
4418 if (current_binding_level != global_binding_level
4419 && IDENTIFIER_LOCAL_VALUE (name))
4420 locval = IDENTIFIER_LOCAL_VALUE (name);
4422 /* In C++ class fields are between local and global scope,
4423 just before the global scope. */
4424 if (current_class_type && ! nonclass)
4426 classval = IDENTIFIER_CLASS_VALUE (name);
4427 if (classval == NULL_TREE && TYPE_BEING_DEFINED (current_class_type))
4428 /* Try to find values from base classes if we are presently
4429 defining a type. We are presently only interested in
4431 classval = lookup_field (current_class_type, name, 0, 1);
4433 /* yylex() calls this with -2, since we should never start digging for
4434 the nested name at the point where we haven't even, for example,
4435 created the COMPONENT_REF or anything like that. */
4436 if (classval == NULL_TREE)
4437 classval = lookup_nested_field (name, ! yylex);
4440 if (locval && classval)
4442 if (current_scope () == current_function_decl
4443 && ! hack_decl_function_context (current_function_decl))
4444 /* Not in a nested function. */
4448 /* This is incredibly horrible. The whole concept of
4449 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
4450 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
4452 tree lctx = hack_decl_function_context (locval);
4453 tree cctx = hack_decl_function_context (classval);
4455 if (lctx == current_scope ())
4457 else if (lctx == cctx)
4460 /* I don't know which is right; let's just guess for now. */
4469 val = IDENTIFIER_GLOBAL_VALUE (name);
4474 /* This should only warn about types used in qualified-ids. */
4475 if (from_obj && from_obj != val)
4477 if (looking_for_typename && TREE_CODE (from_obj) == TYPE_DECL
4478 && TREE_CODE (val) == TYPE_DECL
4479 && TREE_TYPE (from_obj) != TREE_TYPE (val))
4481 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
4482 name, got_object, TREE_TYPE (from_obj));
4483 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
4490 if ((TREE_CODE (val) == TEMPLATE_DECL && looking_for_template)
4491 || TREE_CODE (val) == TYPE_DECL || prefer_type <= 0)
4493 else if (IDENTIFIER_HAS_TYPE_VALUE (name))
4494 val = TYPE_NAME (IDENTIFIER_TYPE_VALUE (name));
4495 else if (TREE_TYPE (val) == error_mark_node)
4496 val = error_mark_node;
4505 lookup_name_nonclass (name)
4508 return lookup_name_real (name, 0, 1);
4512 lookup_name (name, prefer_type)
4516 return lookup_name_real (name, prefer_type, 0);
4519 /* Similar to `lookup_name' but look only at current binding level. */
4522 lookup_name_current_level (name)
4525 register tree t = NULL_TREE;
4527 if (current_binding_level == global_binding_level)
4529 t = IDENTIFIER_GLOBAL_VALUE (name);
4531 /* extern "C" function() */
4532 if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST)
4535 else if (IDENTIFIER_LOCAL_VALUE (name) != NULL_TREE)
4537 struct binding_level *b = current_binding_level;
4540 for (t = b->names; t; t = TREE_CHAIN (t))
4541 if (DECL_NAME (t) == name || DECL_ASSEMBLER_NAME (t) == name)
4555 /* Arrange for the user to get a source line number, even when the
4556 compiler is going down in flames, so that she at least has a
4557 chance of working around problems in the compiler. We used to
4558 call error(), but that let the segmentation fault continue
4559 through; now, it's much more passive by asking them to send the
4560 maintainers mail about the problem. */
4566 signal (SIGSEGV, SIG_DFL);
4568 signal (SIGIOT, SIG_DFL);
4571 signal (SIGILL, SIG_DFL);
4574 signal (SIGABRT, SIG_DFL);
4577 signal (SIGBUS, SIG_DFL);
4579 my_friendly_abort (0);
4582 /* Array for holding types considered "built-in". These types
4583 are output in the module in which `main' is defined. */
4584 static tree *builtin_type_tdescs_arr;
4585 static int builtin_type_tdescs_len, builtin_type_tdescs_max;
4587 /* Push the declarations of builtin types into the namespace.
4588 RID_INDEX, if < RID_MAX is the index of the builtin type
4589 in the array RID_POINTERS. NAME is the name used when looking
4590 up the builtin type. TYPE is the _TYPE node for the builtin type. */
4593 record_builtin_type (rid_index, name, type)
4598 tree rname = NULL_TREE, tname = NULL_TREE;
4601 if ((int) rid_index < (int) RID_MAX)
4602 rname = ridpointers[(int) rid_index];
4604 tname = get_identifier (name);
4606 TYPE_BUILT_IN (type) = 1;
4610 tdecl = pushdecl (build_decl (TYPE_DECL, tname, type));
4611 set_identifier_type_value (tname, NULL_TREE);
4612 if ((int) rid_index < (int) RID_MAX)
4613 IDENTIFIER_GLOBAL_VALUE (tname) = tdecl;
4615 if (rname != NULL_TREE)
4617 if (tname != NULL_TREE)
4619 set_identifier_type_value (rname, NULL_TREE);
4620 IDENTIFIER_GLOBAL_VALUE (rname) = tdecl;
4624 tdecl = pushdecl (build_decl (TYPE_DECL, rname, type));
4625 set_identifier_type_value (rname, NULL_TREE);
4630 /* Push overloaded decl, in global scope, with one argument so it
4631 can be used as a callback from define_function. */
4634 push_overloaded_decl_1 (x)
4637 push_overloaded_decl (x, 0);
4644 auto_function (name, type, code)
4646 enum built_in_function code;
4648 return define_function
4649 (IDENTIFIER_POINTER (name), type, code, (void (*)())push_overloaded_decl_1,
4650 IDENTIFIER_POINTER (build_decl_overload (name, TYPE_ARG_TYPES (type),
4654 /* Create the predefined scalar types of C,
4655 and some nodes representing standard constants (0, 1, (void *)0).
4656 Initialize the global binding level.
4657 Make definitions for built-in primitive functions. */
4660 init_decl_processing ()
4663 register tree endlink, int_endlink, double_endlink;
4665 /* Data type of memcpy. */
4666 tree memcpy_ftype, strlen_ftype;
4667 int wchar_type_size;
4669 tree array_domain_type;
4670 extern int flag_strict_prototype;
4671 tree vb_off_identifier;
4672 /* Function type `char *(char *, char *)' and similar ones */
4673 tree string_ftype_ptr_ptr, int_ftype_string_string;
4675 /* Have to make these distinct before we try using them. */
4676 lang_name_cplusplus = get_identifier ("C++");
4677 lang_name_c = get_identifier ("C");
4679 if (flag_strict_prototype == 2)
4682 strict_prototypes_lang_c = strict_prototypes_lang_cplusplus;
4685 strict_prototypes_lang_c = flag_strict_prototype;
4688 current_lang_name = lang_name_c;
4690 current_function_decl = NULL_TREE;
4691 named_labels = NULL_TREE;
4692 named_label_uses = NULL;
4693 current_binding_level = NULL_BINDING_LEVEL;
4694 free_binding_level = NULL_BINDING_LEVEL;
4696 /* Because most segmentation signals can be traced back into user
4697 code, catch them and at least give the user a chance of working
4698 around compiler bugs. */
4699 signal (SIGSEGV, signal_catch);
4701 /* We will also catch aborts in the back-end through signal_catch and
4702 give the user a chance to see where the error might be, and to defeat
4703 aborts in the back-end when there have been errors previously in their
4706 signal (SIGIOT, signal_catch);
4709 signal (SIGILL, signal_catch);
4712 signal (SIGABRT, signal_catch);
4715 signal (SIGBUS, signal_catch);
4718 gcc_obstack_init (&decl_obstack);
4720 /* Must lay these out before anything else gets laid out. */
4721 error_mark_node = make_node (ERROR_MARK);
4722 TREE_PERMANENT (error_mark_node) = 1;
4723 TREE_TYPE (error_mark_node) = error_mark_node;
4724 error_mark_list = build_tree_list (error_mark_node, error_mark_node);
4725 TREE_TYPE (error_mark_list) = error_mark_node;
4727 /* Make the binding_level structure for global names. */
4729 global_binding_level = current_binding_level;
4731 this_identifier = get_identifier (THIS_NAME);
4732 in_charge_identifier = get_identifier (IN_CHARGE_NAME);
4733 ctor_identifier = get_identifier (CTOR_NAME);
4734 dtor_identifier = get_identifier (DTOR_NAME);
4735 pfn_identifier = get_identifier (VTABLE_PFN_NAME);
4736 index_identifier = get_identifier (VTABLE_INDEX_NAME);
4737 delta_identifier = get_identifier (VTABLE_DELTA_NAME);
4738 delta2_identifier = get_identifier (VTABLE_DELTA2_NAME);
4739 pfn_or_delta2_identifier = get_identifier ("__pfn_or_delta2");
4740 if (flag_handle_signatures)
4742 tag_identifier = get_identifier (SIGTABLE_TAG_NAME);
4743 vb_off_identifier = get_identifier (SIGTABLE_VB_OFF_NAME);
4744 vt_off_identifier = get_identifier (SIGTABLE_VT_OFF_NAME);
4747 /* Define `int' and `char' first so that dbx will output them first. */
4749 integer_type_node = make_signed_type (INT_TYPE_SIZE);
4750 record_builtin_type (RID_INT, NULL_PTR, integer_type_node);
4752 /* Define `char', which is like either `signed char' or `unsigned char'
4753 but not the same as either. */
4757 ? make_signed_type (CHAR_TYPE_SIZE)
4758 : make_unsigned_type (CHAR_TYPE_SIZE));
4759 record_builtin_type (RID_CHAR, "char", char_type_node);
4761 long_integer_type_node = make_signed_type (LONG_TYPE_SIZE);
4762 record_builtin_type (RID_LONG, "long int", long_integer_type_node);
4764 unsigned_type_node = make_unsigned_type (INT_TYPE_SIZE);
4765 record_builtin_type (RID_UNSIGNED, "unsigned int", unsigned_type_node);
4767 long_unsigned_type_node = make_unsigned_type (LONG_TYPE_SIZE);
4768 record_builtin_type (RID_MAX, "long unsigned int", long_unsigned_type_node);
4769 record_builtin_type (RID_MAX, "unsigned long", long_unsigned_type_node);
4771 long_long_integer_type_node = make_signed_type (LONG_LONG_TYPE_SIZE);
4772 record_builtin_type (RID_MAX, "long long int", long_long_integer_type_node);
4774 long_long_unsigned_type_node = make_unsigned_type (LONG_LONG_TYPE_SIZE);
4775 record_builtin_type (RID_MAX, "long long unsigned int",
4776 long_long_unsigned_type_node);
4777 record_builtin_type (RID_MAX, "long long unsigned",
4778 long_long_unsigned_type_node);
4780 short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE);
4781 record_builtin_type (RID_SHORT, "short int", short_integer_type_node);
4782 short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE);
4783 record_builtin_type (RID_MAX, "short unsigned int", short_unsigned_type_node);
4784 record_builtin_type (RID_MAX, "unsigned short", short_unsigned_type_node);
4786 /* `unsigned long' is the standard type for sizeof.
4787 Note that stddef.h uses `unsigned long',
4788 and this must agree, even of long and int are the same size. */
4790 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE)));
4793 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE)));
4795 TREE_TYPE (TYPE_SIZE (integer_type_node)) = sizetype;
4796 TREE_TYPE (TYPE_SIZE (char_type_node)) = sizetype;
4797 TREE_TYPE (TYPE_SIZE (unsigned_type_node)) = sizetype;
4798 TREE_TYPE (TYPE_SIZE (long_unsigned_type_node)) = sizetype;
4799 TREE_TYPE (TYPE_SIZE (long_integer_type_node)) = sizetype;
4800 TREE_TYPE (TYPE_SIZE (long_long_integer_type_node)) = sizetype;
4801 TREE_TYPE (TYPE_SIZE (long_long_unsigned_type_node)) = sizetype;
4802 TREE_TYPE (TYPE_SIZE (short_integer_type_node)) = sizetype;
4803 TREE_TYPE (TYPE_SIZE (short_unsigned_type_node)) = sizetype;
4805 /* Define both `signed char' and `unsigned char'. */
4806 signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE);
4807 record_builtin_type (RID_MAX, "signed char", signed_char_type_node);
4808 unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE);
4809 record_builtin_type (RID_MAX, "unsigned char", unsigned_char_type_node);
4811 /* These are types that type_for_size and type_for_mode use. */
4812 intQI_type_node = make_signed_type (GET_MODE_BITSIZE (QImode));
4813 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node));
4814 intHI_type_node = make_signed_type (GET_MODE_BITSIZE (HImode));
4815 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node));
4816 intSI_type_node = make_signed_type (GET_MODE_BITSIZE (SImode));
4817 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node));
4818 intDI_type_node = make_signed_type (GET_MODE_BITSIZE (DImode));
4819 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node));
4820 unsigned_intQI_type_node = make_unsigned_type (GET_MODE_BITSIZE (QImode));
4821 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node));
4822 unsigned_intHI_type_node = make_unsigned_type (GET_MODE_BITSIZE (HImode));
4823 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node));
4824 unsigned_intSI_type_node = make_unsigned_type (GET_MODE_BITSIZE (SImode));
4825 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node));
4826 unsigned_intDI_type_node = make_unsigned_type (GET_MODE_BITSIZE (DImode));
4827 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node));
4829 float_type_node = make_node (REAL_TYPE);
4830 TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE;
4831 record_builtin_type (RID_FLOAT, NULL_PTR, float_type_node);
4832 layout_type (float_type_node);
4834 double_type_node = make_node (REAL_TYPE);
4835 if (flag_short_double)
4836 TYPE_PRECISION (double_type_node) = FLOAT_TYPE_SIZE;
4838 TYPE_PRECISION (double_type_node) = DOUBLE_TYPE_SIZE;
4839 record_builtin_type (RID_DOUBLE, NULL_PTR, double_type_node);
4840 layout_type (double_type_node);
4842 long_double_type_node = make_node (REAL_TYPE);
4843 TYPE_PRECISION (long_double_type_node) = LONG_DOUBLE_TYPE_SIZE;
4844 record_builtin_type (RID_MAX, "long double", long_double_type_node);
4845 layout_type (long_double_type_node);
4847 integer_zero_node = build_int_2 (0, 0);
4848 TREE_TYPE (integer_zero_node) = integer_type_node;
4849 integer_one_node = build_int_2 (1, 0);
4850 TREE_TYPE (integer_one_node) = integer_type_node;
4851 integer_two_node = build_int_2 (2, 0);
4852 TREE_TYPE (integer_two_node) = integer_type_node;
4853 integer_three_node = build_int_2 (3, 0);
4854 TREE_TYPE (integer_three_node) = integer_type_node;
4856 boolean_type_node = make_unsigned_type (BOOL_TYPE_SIZE);
4857 TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE);
4858 record_builtin_type (RID_BOOL, "bool", boolean_type_node);
4859 boolean_false_node = build_int_2 (0, 0);
4860 TREE_TYPE (boolean_false_node) = boolean_type_node;
4861 boolean_true_node = build_int_2 (1, 0);
4862 TREE_TYPE (boolean_true_node) = boolean_type_node;
4864 /* These are needed by stor-layout.c. */
4865 size_zero_node = size_int (0);
4866 size_one_node = size_int (1);
4868 signed_size_zero_node = build_int_2 (0, 0);
4869 TREE_TYPE (signed_size_zero_node) = make_signed_type (TYPE_PRECISION (sizetype));
4871 void_type_node = make_node (VOID_TYPE);
4872 record_builtin_type (RID_VOID, NULL_PTR, void_type_node);
4873 layout_type (void_type_node); /* Uses integer_zero_node. */
4874 void_list_node = build_tree_list (NULL_TREE, void_type_node);
4875 TREE_PARMLIST (void_list_node) = 1;
4877 null_pointer_node = build_int_2 (0, 0);
4878 TREE_TYPE (null_pointer_node) = build_pointer_type (void_type_node);
4879 layout_type (TREE_TYPE (null_pointer_node));
4882 TREE_TYPE (null_node) = type_for_size (POINTER_SIZE, 0);
4884 TREE_TYPE (null_node) = build_pointer_type (void_type_node);
4886 /* Used for expressions that do nothing, but are not errors. */
4887 void_zero_node = build_int_2 (0, 0);
4888 TREE_TYPE (void_zero_node) = void_type_node;
4890 string_type_node = build_pointer_type (char_type_node);
4891 const_string_type_node =
4892 build_pointer_type (build_type_variant (char_type_node, 1, 0));
4894 record_builtin_type (RID_MAX, NULL_PTR, string_type_node);
4897 /* Make a type to be the domain of a few array types
4898 whose domains don't really matter.
4899 200 is small enough that it always fits in size_t
4900 and large enough that it can hold most function names for the
4901 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
4902 array_domain_type = build_index_type (build_int_2 (200, 0));
4904 /* make a type for arrays of characters.
4905 With luck nothing will ever really depend on the length of this
4907 char_array_type_node
4908 = build_array_type (char_type_node, array_domain_type);
4909 /* Likewise for arrays of ints. */
4911 = build_array_type (integer_type_node, array_domain_type);
4913 /* This is just some anonymous class type. Nobody should ever
4914 need to look inside this envelope. */
4915 class_star_type_node = build_pointer_type (make_lang_type (RECORD_TYPE));
4917 default_function_type
4918 = build_function_type (integer_type_node, NULL_TREE);
4920 ptr_type_node = build_pointer_type (void_type_node);
4921 const_ptr_type_node =
4922 build_pointer_type (build_type_variant (void_type_node, 1, 0));
4924 record_builtin_type (RID_MAX, NULL_PTR, ptr_type_node);
4926 endlink = void_list_node;
4927 int_endlink = tree_cons (NULL_TREE, integer_type_node, endlink);
4928 double_endlink = tree_cons (NULL_TREE, double_type_node, endlink);
4931 = build_function_type (float_type_node,
4932 tree_cons (NULL_TREE, float_type_node, endlink));
4935 = build_function_type (double_type_node, double_endlink);
4937 ldouble_ftype_ldouble
4938 = build_function_type (long_double_type_node,
4939 tree_cons (NULL_TREE, long_double_type_node,
4942 double_ftype_double_double
4943 = build_function_type (double_type_node,
4944 tree_cons (NULL_TREE, double_type_node,
4948 = build_function_type (integer_type_node, int_endlink);
4951 = build_function_type (long_integer_type_node,
4952 tree_cons (NULL_TREE, long_integer_type_node,
4955 int_ftype_cptr_cptr_sizet
4956 = build_function_type (integer_type_node,
4957 tree_cons (NULL_TREE, const_ptr_type_node,
4958 tree_cons (NULL_TREE, const_ptr_type_node,
4959 tree_cons (NULL_TREE,
4963 string_ftype_ptr_ptr /* strcpy prototype */
4964 = build_function_type (string_type_node,
4965 tree_cons (NULL_TREE, string_type_node,
4966 tree_cons (NULL_TREE,
4967 const_string_type_node,
4970 int_ftype_string_string /* strcmp prototype */
4971 = build_function_type (integer_type_node,
4972 tree_cons (NULL_TREE, const_string_type_node,
4973 tree_cons (NULL_TREE,
4974 const_string_type_node,
4977 strlen_ftype /* strlen prototype */
4978 = build_function_type (sizetype,
4979 tree_cons (NULL_TREE, const_string_type_node,
4982 memcpy_ftype /* memcpy prototype */
4983 = build_function_type (ptr_type_node,
4984 tree_cons (NULL_TREE, ptr_type_node,
4985 tree_cons (NULL_TREE, const_ptr_type_node,
4986 tree_cons (NULL_TREE,
4990 if (flag_huge_objects)
4991 delta_type_node = long_integer_type_node;
4993 delta_type_node = short_integer_type_node;
4995 builtin_function ("__builtin_constant_p", int_ftype_int,
4996 BUILT_IN_CONSTANT_P, NULL_PTR);
4998 builtin_return_address_fndecl =
4999 builtin_function ("__builtin_return_address",
5000 build_function_type (ptr_type_node,
5001 tree_cons (NULL_TREE,
5004 BUILT_IN_RETURN_ADDRESS, NULL_PTR);
5006 builtin_function ("__builtin_frame_address",
5007 build_function_type (ptr_type_node,
5008 tree_cons (NULL_TREE,
5011 BUILT_IN_FRAME_ADDRESS, NULL_PTR);
5013 builtin_function ("__builtin_alloca",
5014 build_function_type (ptr_type_node,
5015 tree_cons (NULL_TREE,
5018 BUILT_IN_ALLOCA, "alloca");
5019 builtin_function ("__builtin_ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
5020 /* Define alloca, ffs as builtins.
5021 Declare _exit just to mark it as volatile. */
5022 if (! flag_no_builtin && !flag_no_nonansi_builtin)
5024 temp = builtin_function ("alloca",
5025 build_function_type (ptr_type_node,
5026 tree_cons (NULL_TREE,
5029 BUILT_IN_ALLOCA, NULL_PTR);
5030 /* Suppress error if redefined as a non-function. */
5031 DECL_BUILT_IN_NONANSI (temp) = 1;
5032 temp = builtin_function ("ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
5033 /* Suppress error if redefined as a non-function. */
5034 DECL_BUILT_IN_NONANSI (temp) = 1;
5035 temp = builtin_function ("_exit", build_function_type (void_type_node,
5037 NOT_BUILT_IN, NULL_PTR);
5038 TREE_THIS_VOLATILE (temp) = 1;
5039 TREE_SIDE_EFFECTS (temp) = 1;
5040 /* Suppress error if redefined as a non-function. */
5041 DECL_BUILT_IN_NONANSI (temp) = 1;
5044 builtin_function ("__builtin_abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
5045 builtin_function ("__builtin_fabsf", float_ftype_float, BUILT_IN_FABS,
5047 builtin_function ("__builtin_fabs", double_ftype_double, BUILT_IN_FABS,
5049 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
5051 builtin_function ("__builtin_labs", long_ftype_long,
5052 BUILT_IN_LABS, NULL_PTR);
5053 builtin_function ("__builtin_saveregs",
5054 build_function_type (ptr_type_node, NULL_TREE),
5055 BUILT_IN_SAVEREGS, NULL_PTR);
5056 builtin_function ("__builtin_classify_type", default_function_type,
5057 BUILT_IN_CLASSIFY_TYPE, NULL_PTR);
5058 builtin_function ("__builtin_next_arg",
5059 build_function_type (ptr_type_node, NULL_TREE),
5060 BUILT_IN_NEXT_ARG, NULL_PTR);
5061 builtin_function ("__builtin_args_info",
5062 build_function_type (integer_type_node,
5063 tree_cons (NULL_TREE,
5066 BUILT_IN_ARGS_INFO, NULL_PTR);
5068 /* Untyped call and return. */
5069 builtin_function ("__builtin_apply_args",
5070 build_function_type (ptr_type_node, NULL_TREE),
5071 BUILT_IN_APPLY_ARGS, NULL_PTR);
5073 temp = tree_cons (NULL_TREE,
5074 build_pointer_type (build_function_type (void_type_node,
5076 tree_cons (NULL_TREE,
5078 tree_cons (NULL_TREE,
5081 builtin_function ("__builtin_apply",
5082 build_function_type (ptr_type_node, temp),
5083 BUILT_IN_APPLY, NULL_PTR);
5084 builtin_function ("__builtin_return",
5085 build_function_type (void_type_node,
5086 tree_cons (NULL_TREE,
5089 BUILT_IN_RETURN, NULL_PTR);
5091 /* Currently under experimentation. */
5092 builtin_function ("__builtin_memcpy", memcpy_ftype,
5093 BUILT_IN_MEMCPY, "memcpy");
5094 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet,
5095 BUILT_IN_MEMCMP, "memcmp");
5096 builtin_function ("__builtin_strcmp", int_ftype_string_string,
5097 BUILT_IN_STRCMP, "strcmp");
5098 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr,
5099 BUILT_IN_STRCPY, "strcpy");
5100 builtin_function ("__builtin_strlen", strlen_ftype,
5101 BUILT_IN_STRLEN, "strlen");
5102 builtin_function ("__builtin_sqrtf", float_ftype_float,
5103 BUILT_IN_FSQRT, "sqrtf");
5104 builtin_function ("__builtin_fsqrt", double_ftype_double,
5105 BUILT_IN_FSQRT, NULL_PTR);
5106 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble,
5107 BUILT_IN_FSQRT, "sqrtl");
5108 builtin_function ("__builtin_sinf", float_ftype_float,
5109 BUILT_IN_SIN, "sinf");
5110 builtin_function ("__builtin_sin", double_ftype_double,
5111 BUILT_IN_SIN, "sin");
5112 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble,
5113 BUILT_IN_SIN, "sinl");
5114 builtin_function ("__builtin_cosf", float_ftype_float,
5115 BUILT_IN_COS, "cosf");
5116 builtin_function ("__builtin_cos", double_ftype_double,
5117 BUILT_IN_COS, "cos");
5118 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble,
5119 BUILT_IN_COS, "cosl");
5121 if (!flag_no_builtin)
5123 #if 0 /* These do not work well with libg++. */
5124 builtin_function ("abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
5125 builtin_function ("fabs", double_ftype_double, BUILT_IN_FABS, NULL_PTR);
5126 builtin_function ("labs", long_ftype_long, BUILT_IN_LABS, NULL_PTR);
5128 builtin_function ("fabsf", float_ftype_float, BUILT_IN_FABS, NULL_PTR);
5129 builtin_function ("fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
5131 builtin_function ("memcpy", memcpy_ftype, BUILT_IN_MEMCPY, NULL_PTR);
5132 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet, BUILT_IN_MEMCMP,
5134 builtin_function ("strcmp", int_ftype_string_string, BUILT_IN_STRCMP,
5136 builtin_function ("strcpy", string_ftype_ptr_ptr, BUILT_IN_STRCPY,
5138 builtin_function ("strlen", strlen_ftype, BUILT_IN_STRLEN, NULL_PTR);
5139 builtin_function ("sqrtf", float_ftype_float, BUILT_IN_FSQRT, NULL_PTR);
5140 builtin_function ("sqrt", double_ftype_double, BUILT_IN_FSQRT, NULL_PTR);
5141 builtin_function ("sqrtl", ldouble_ftype_ldouble, BUILT_IN_FSQRT,
5143 builtin_function ("sinf", float_ftype_float, BUILT_IN_SIN, NULL_PTR);
5144 builtin_function ("sin", double_ftype_double, BUILT_IN_SIN, NULL_PTR);
5145 builtin_function ("sinl", ldouble_ftype_ldouble, BUILT_IN_SIN, NULL_PTR);
5146 builtin_function ("cosf", float_ftype_float, BUILT_IN_COS, NULL_PTR);
5147 builtin_function ("cos", double_ftype_double, BUILT_IN_COS, NULL_PTR);
5148 builtin_function ("cosl", ldouble_ftype_ldouble, BUILT_IN_COS, NULL_PTR);
5150 /* Declare these functions volatile
5151 to avoid spurious "control drops through" warnings. */
5152 temp = builtin_function ("abort",
5153 build_function_type (void_type_node, endlink),
5154 NOT_BUILT_IN, NULL_PTR);
5155 TREE_THIS_VOLATILE (temp) = 1;
5156 TREE_SIDE_EFFECTS (temp) = 1;
5157 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
5159 DECL_BUILT_IN_NONANSI (temp) = 1;
5160 temp = builtin_function ("exit", build_function_type (void_type_node,
5162 NOT_BUILT_IN, NULL_PTR);
5163 TREE_THIS_VOLATILE (temp) = 1;
5164 TREE_SIDE_EFFECTS (temp) = 1;
5165 DECL_BUILT_IN_NONANSI (temp) = 1;
5169 /* Support for these has not been written in either expand_builtin
5170 or build_function_call. */
5171 builtin_function ("__builtin_div", default_ftype, BUILT_IN_DIV, NULL_PTR);
5172 builtin_function ("__builtin_ldiv", default_ftype, BUILT_IN_LDIV, NULL_PTR);
5173 builtin_function ("__builtin_ffloor", double_ftype_double, BUILT_IN_FFLOOR,
5175 builtin_function ("__builtin_fceil", double_ftype_double, BUILT_IN_FCEIL,
5177 builtin_function ("__builtin_fmod", double_ftype_double_double,
5178 BUILT_IN_FMOD, NULL_PTR);
5179 builtin_function ("__builtin_frem", double_ftype_double_double,
5180 BUILT_IN_FREM, NULL_PTR);
5181 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int,
5182 BUILT_IN_MEMSET, NULL_PTR);
5183 builtin_function ("__builtin_getexp", double_ftype_double, BUILT_IN_GETEXP,
5185 builtin_function ("__builtin_getman", double_ftype_double, BUILT_IN_GETMAN,
5189 /* C++ extensions */
5191 unknown_type_node = make_node (UNKNOWN_TYPE);
5192 decl = pushdecl (build_decl (TYPE_DECL, get_identifier ("unknown type"),
5193 unknown_type_node));
5194 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5195 DECL_IGNORED_P (decl) = 1;
5196 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
5197 TYPE_SIZE (unknown_type_node) = TYPE_SIZE (void_type_node);
5198 TYPE_ALIGN (unknown_type_node) = 1;
5199 TYPE_MODE (unknown_type_node) = TYPE_MODE (void_type_node);
5200 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
5201 TREE_TYPE (unknown_type_node) = unknown_type_node;
5202 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same result. */
5203 TYPE_POINTER_TO (unknown_type_node) = unknown_type_node;
5204 TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node;
5206 /* This is for handling opaque types in signatures. */
5207 opaque_type_node = copy_node (ptr_type_node);
5208 TYPE_MAIN_VARIANT (opaque_type_node) = opaque_type_node;
5209 record_builtin_type (RID_MAX, 0, opaque_type_node);
5211 /* This is special for C++ so functions can be overloaded. */
5213 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE)));
5214 wchar_type_size = TYPE_PRECISION (wchar_type_node);
5215 signed_wchar_type_node = make_signed_type (wchar_type_size);
5216 unsigned_wchar_type_node = make_unsigned_type (wchar_type_size);
5218 = TREE_UNSIGNED (wchar_type_node)
5219 ? unsigned_wchar_type_node
5220 : signed_wchar_type_node;
5221 record_builtin_type (RID_WCHAR, "__wchar_t", wchar_type_node);
5223 /* Artificial declaration of wchar_t -- can be bashed */
5224 wchar_decl_node = build_decl (TYPE_DECL, get_identifier ("wchar_t"),
5226 pushdecl (wchar_decl_node);
5228 /* This is for wide string constants. */
5229 wchar_array_type_node
5230 = build_array_type (wchar_type_node, array_domain_type);
5232 if (flag_vtable_thunks)
5234 /* Make sure we get a unique function type, so we can give
5235 its pointer type a name. (This wins for gdb.) */
5236 tree vfunc_type = make_node (FUNCTION_TYPE);
5237 TREE_TYPE (vfunc_type) = integer_type_node;
5238 TYPE_ARG_TYPES (vfunc_type) = NULL_TREE;
5239 layout_type (vfunc_type);
5241 vtable_entry_type = build_pointer_type (vfunc_type);
5245 vtable_entry_type = make_lang_type (RECORD_TYPE);
5246 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
5248 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
5250 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
5252 finish_builtin_type (vtable_entry_type, VTBL_PTR_TYPE, fields, 2,
5255 /* Make this part of an invisible union. */
5256 fields[3] = copy_node (fields[2]);
5257 TREE_TYPE (fields[3]) = delta_type_node;
5258 DECL_NAME (fields[3]) = delta2_identifier;
5259 DECL_MODE (fields[3]) = TYPE_MODE (delta_type_node);
5260 DECL_SIZE (fields[3]) = TYPE_SIZE (delta_type_node);
5261 TREE_UNSIGNED (fields[3]) = 0;
5262 TREE_CHAIN (fields[2]) = fields[3];
5263 vtable_entry_type = build_type_variant (vtable_entry_type, 1, 0);
5265 record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type);
5268 = build_array_type (vtable_entry_type, NULL_TREE);
5269 layout_type (vtbl_type_node);
5270 vtbl_type_node = cp_build_type_variant (vtbl_type_node, 1, 0);
5271 record_builtin_type (RID_MAX, NULL_PTR, vtbl_type_node);
5273 /* Simplify life by making a "sigtable_entry_type". Give its
5274 fields names so that the debugger can use them. */
5276 if (flag_handle_signatures)
5278 sigtable_entry_type = make_lang_type (RECORD_TYPE);
5279 fields[0] = build_lang_field_decl (FIELD_DECL, tag_identifier,
5281 fields[1] = build_lang_field_decl (FIELD_DECL, vb_off_identifier,
5283 fields[2] = build_lang_field_decl (FIELD_DECL, delta_identifier,
5285 fields[3] = build_lang_field_decl (FIELD_DECL, index_identifier,
5287 fields[4] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
5290 /* Set the alignment to the max of the alignment of ptr_type_node and
5291 delta_type_node. Double alignment wastes a word on the Sparc. */
5292 finish_builtin_type (sigtable_entry_type, SIGTABLE_PTR_TYPE, fields, 4,
5293 (TYPE_ALIGN (ptr_type_node) > TYPE_ALIGN (delta_type_node))
5297 /* Make this part of an invisible union. */
5298 fields[5] = copy_node (fields[4]);
5299 TREE_TYPE (fields[5]) = delta_type_node;
5300 DECL_NAME (fields[5]) = vt_off_identifier;
5301 DECL_MODE (fields[5]) = TYPE_MODE (delta_type_node);
5302 DECL_SIZE (fields[5]) = TYPE_SIZE (delta_type_node);
5303 TREE_UNSIGNED (fields[5]) = 0;
5304 TREE_CHAIN (fields[4]) = fields[5];
5306 sigtable_entry_type = build_type_variant (sigtable_entry_type, 1, 0);
5307 record_builtin_type (RID_MAX, SIGTABLE_PTR_TYPE, sigtable_entry_type);
5313 /* Must build __t_desc type. Currently, type descriptors look like this:
5320 struct __t_desc *points_to;
5321 int ivars_count, meths_count;
5322 struct __i_desc *ivars[];
5323 struct __m_desc *meths[];
5324 struct __t_desc *parents[];
5325 struct __t_desc *vbases[];
5329 ...as per Linton's paper. */
5331 __t_desc_type_node = make_lang_type (RECORD_TYPE);
5332 __i_desc_type_node = make_lang_type (RECORD_TYPE);
5333 __m_desc_type_node = make_lang_type (RECORD_TYPE);
5334 __t_desc_array_type =
5335 build_array_type (build_pointer_type (__t_desc_type_node), NULL_TREE);
5336 __i_desc_array_type =
5337 build_array_type (build_pointer_type (__i_desc_type_node), NULL_TREE);
5338 __m_desc_array_type =
5339 build_array_type (build_pointer_type (__m_desc_type_node), NULL_TREE);
5341 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5343 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("size"),
5344 unsigned_type_node);
5345 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("bits"),
5346 unsigned_type_node);
5347 fields[3] = build_lang_field_decl (FIELD_DECL,
5348 get_identifier ("points_to"),
5349 build_pointer_type (__t_desc_type_node));
5350 fields[4] = build_lang_field_decl (FIELD_DECL,
5351 get_identifier ("ivars_count"),
5353 fields[5] = build_lang_field_decl (FIELD_DECL,
5354 get_identifier ("meths_count"),
5356 fields[6] = build_lang_field_decl (FIELD_DECL, get_identifier ("ivars"),
5357 build_pointer_type (__i_desc_array_type));
5358 fields[7] = build_lang_field_decl (FIELD_DECL, get_identifier ("meths"),
5359 build_pointer_type (__m_desc_array_type));
5360 fields[8] = build_lang_field_decl (FIELD_DECL, get_identifier ("parents"),
5361 build_pointer_type (__t_desc_array_type));
5362 fields[9] = build_lang_field_decl (FIELD_DECL, get_identifier ("vbases"),
5363 build_pointer_type (__t_desc_array_type));
5364 fields[10] = build_lang_field_decl (FIELD_DECL, get_identifier ("offsets"),
5365 build_pointer_type (integer_type_node));
5366 finish_builtin_type (__t_desc_type_node, "__t_desc", fields, 10, integer_type_node);
5368 /* ivar descriptors look like this:
5374 struct __t_desc *type;
5378 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5380 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("offset"),
5382 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("type"),
5383 build_pointer_type (__t_desc_type_node));
5384 finish_builtin_type (__i_desc_type_node, "__i_desc", fields, 2,
5387 /* method descriptors look like this:
5393 struct __t_desc *vcontext;
5394 struct __t_desc *return_type;
5397 short required_parms;
5398 struct __t_desc *parm_types[];
5402 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5404 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("vindex"),
5406 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("vcontext"),
5407 build_pointer_type (__t_desc_type_node));
5408 fields[3] = build_lang_field_decl (FIELD_DECL, get_identifier ("return_type"),
5409 build_pointer_type (__t_desc_type_node));
5410 fields[4] = build_lang_field_decl (FIELD_DECL, get_identifier ("address"),
5411 build_pointer_type (default_function_type));
5412 fields[5] = build_lang_field_decl (FIELD_DECL, get_identifier ("parm_count"),
5413 short_integer_type_node);
5414 fields[6] = build_lang_field_decl (FIELD_DECL, get_identifier ("required_parms"),
5415 short_integer_type_node);
5416 fields[7] = build_lang_field_decl (FIELD_DECL, get_identifier ("parm_types"),
5417 build_pointer_type (build_array_type (build_pointer_type (__t_desc_type_node), NULL_TREE)));
5418 finish_builtin_type (__m_desc_type_node, "__m_desc", fields, 7,
5421 #endif /*flag_rtti*/
5424 current_lang_name = lang_name_cplusplus;
5426 auto_function (ansi_opname[(int) NEW_EXPR],
5427 build_function_type (ptr_type_node,
5428 tree_cons (NULL_TREE, sizetype,
5431 auto_function (ansi_opname[(int) VEC_NEW_EXPR],
5432 build_function_type (ptr_type_node,
5433 tree_cons (NULL_TREE, sizetype,
5436 auto_function (ansi_opname[(int) DELETE_EXPR],
5437 build_function_type (void_type_node,
5438 tree_cons (NULL_TREE, ptr_type_node,
5441 auto_function (ansi_opname[(int) VEC_DELETE_EXPR],
5442 build_function_type (void_type_node,
5443 tree_cons (NULL_TREE, ptr_type_node,
5448 = define_function ("__pure_virtual",
5449 build_function_type (void_type_node, void_list_node),
5450 NOT_BUILT_IN, 0, 0);
5452 /* Perform other language dependent initializations. */
5453 init_class_processing ();
5454 init_init_processing ();
5455 init_search_processing ();
5456 init_rtti_processing ();
5458 if (flag_exceptions)
5459 init_exception_processing ();
5462 flag_inline_functions = 0;
5465 if (! supports_one_only ())
5468 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
5469 declare_function_name ();
5471 /* Prepare to check format strings against argument lists. */
5472 init_function_format_info ();
5475 /* initialize type descriptor type node of various rtti type. */
5482 tdecl = lookup_name (get_identifier ("type_info"), 0);
5483 if (tdecl == NULL_TREE)
5485 __t_desc_type_node = TREE_TYPE (tdecl);
5487 __tp_desc_type_node = build_pointer_type (__t_desc_type_node);
5491 tdecl = lookup_name (get_identifier ("__baselist_type_info"), 0);
5492 if (tdecl == NULL_TREE)
5494 __baselist_desc_type_node = TREE_TYPE (tdecl);
5497 tdecl = lookup_name (get_identifier ("__builtin_type_info"), 0);
5498 if (tdecl == NULL_TREE)
5500 __bltn_desc_type_node = TREE_TYPE (tdecl);
5502 tdecl = lookup_name (get_identifier ("__user_type_info"), 0);
5503 if (tdecl == NULL_TREE)
5505 __user_desc_type_node = TREE_TYPE (tdecl);
5507 tdecl = lookup_name (get_identifier ("__class_type_info"), 0);
5508 if (tdecl == NULL_TREE)
5510 __class_desc_type_node = TREE_TYPE (tdecl);
5512 tdecl = lookup_field (__class_desc_type_node,
5513 get_identifier ("access_mode"), 0, 0);
5514 if (tdecl == NULL_TREE)
5516 __access_mode_type_node = TREE_TYPE (tdecl);
5518 tdecl = lookup_name (get_identifier ("__attr_type_info"), 0);
5519 if (tdecl == NULL_TREE)
5521 __attr_desc_type_node = TREE_TYPE (tdecl);
5523 tdecl = lookup_name (get_identifier ("__pointer_type_info"), 0);
5524 if (tdecl == NULL_TREE)
5526 __ptr_desc_type_node = TREE_TYPE (tdecl);
5528 tdecl = lookup_name (get_identifier ("__func_type_info"), 0);
5529 if (tdecl == NULL_TREE)
5531 __func_desc_type_node = TREE_TYPE (tdecl);
5533 tdecl = lookup_name (get_identifier ("__ptmf_type_info"), 0);
5534 if (tdecl == NULL_TREE)
5536 __ptmf_desc_type_node = TREE_TYPE (tdecl);
5538 tdecl = lookup_name (get_identifier ("__ptmd_type_info"), 0);
5539 if (tdecl == NULL_TREE)
5541 __ptmd_desc_type_node = TREE_TYPE (tdecl);
5545 /* Make a definition for a builtin function named NAME and whose data type
5546 is TYPE. TYPE should be a function type with argument types.
5547 FUNCTION_CODE tells later passes how to compile calls to this function.
5548 See tree.h for its possible values.
5550 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
5551 the name to be called if we can't opencode the function. */
5554 define_function (name, type, function_code, pfn, library_name)
5557 enum built_in_function function_code;
5561 tree decl = build_lang_decl (FUNCTION_DECL, get_identifier (name), type);
5562 DECL_EXTERNAL (decl) = 1;
5563 TREE_PUBLIC (decl) = 1;
5564 DECL_ARTIFICIAL (decl) = 1;
5566 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
5567 we cannot change DECL_ASSEMBLER_NAME until we have installed this
5568 function in the namespace. */
5569 if (pfn) (*pfn) (decl);
5571 DECL_ASSEMBLER_NAME (decl) = get_identifier (library_name);
5572 make_function_rtl (decl);
5573 if (function_code != NOT_BUILT_IN)
5575 DECL_BUILT_IN (decl) = 1;
5576 DECL_FUNCTION_CODE (decl) = function_code;
5581 /* Called when a declaration is seen that contains no names to declare.
5582 If its type is a reference to a structure, union or enum inherited
5583 from a containing scope, shadow that tag name for the current scope
5584 with a forward reference.
5585 If its type defines a new named structure or union
5586 or defines an enum, it is valid but we need not do anything here.
5587 Otherwise, it is an error.
5589 C++: may have to grok the declspecs to learn about static,
5590 complain for anonymous unions. */
5593 shadow_tag (declspecs)
5597 tree ob_modifier = NULL_TREE;
5599 register enum tree_code code, ok_code = ERROR_MARK;
5600 register tree t = NULL_TREE;
5602 for (link = declspecs; link; link = TREE_CHAIN (link))
5604 register tree value = TREE_VALUE (link);
5606 code = TREE_CODE (value);
5607 if (IS_AGGR_TYPE_CODE (code) || code == ENUMERAL_TYPE)
5609 my_friendly_assert (TYPE_NAME (value) != NULL_TREE, 261);
5611 if (IS_AGGR_TYPE (value) && CLASSTYPE_USE_TEMPLATE (value))
5613 if (CLASSTYPE_IMPLICIT_INSTANTIATION (value)
5614 && TYPE_SIZE (value) == NULL_TREE)
5616 SET_CLASSTYPE_TEMPLATE_SPECIALIZATION (value);
5617 if (processing_template_decl)
5618 push_template_decl (TYPE_MAIN_DECL (value));
5620 else if (CLASSTYPE_TEMPLATE_INSTANTIATION (value))
5621 cp_error ("specialization after instantiation of `%T'", value);
5628 else if (value == ridpointers[(int) RID_STATIC]
5629 || value == ridpointers[(int) RID_EXTERN]
5630 || value == ridpointers[(int) RID_AUTO]
5631 || value == ridpointers[(int) RID_REGISTER]
5632 || value == ridpointers[(int) RID_INLINE]
5633 || value == ridpointers[(int) RID_VIRTUAL]
5634 || value == ridpointers[(int) RID_EXPLICIT])
5635 ob_modifier = value;
5638 /* This is where the variables in an anonymous union are
5639 declared. An anonymous union declaration looks like:
5641 because there is no declarator after the union, the parser
5642 sends that declaration here. */
5643 if (ok_code == UNION_TYPE
5645 && ((TREE_CODE (TYPE_NAME (t)) == IDENTIFIER_NODE
5646 && ANON_AGGRNAME_P (TYPE_NAME (t)))
5647 || (TREE_CODE (TYPE_NAME (t)) == TYPE_DECL
5648 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))))
5652 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
5653 function members. */
5654 for (fn = TYPE_METHODS (t); fn; fn = TREE_CHAIN (fn))
5655 if (! DECL_ARTIFICIAL (fn))
5657 error ("an anonymous union cannot have function members");
5661 if (TYPE_FIELDS (t))
5663 tree decl = grokdeclarator (NULL_TREE, declspecs, NORMAL, 0,
5665 finish_anon_union (decl);
5670 /* Anonymous unions are objects, that's why we only check for
5671 inappropriate specifiers in this branch. */
5675 if (ob_modifier == ridpointers[(int) RID_INLINE]
5676 || ob_modifier == ridpointers[(int) RID_VIRTUAL])
5677 cp_error ("`%D' can only be specified for functions", ob_modifier);
5678 else if (ob_modifier == ridpointers[(int) RID_EXPLICIT])
5679 cp_error ("`%D' can only be specified for constructors",
5682 cp_error ("`%D' can only be specified for objects and functions",
5687 pedwarn ("abstract declarator used as declaration");
5688 else if (found_tag > 1)
5689 pedwarn ("multiple types in one declaration");
5693 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
5696 groktypename (typename)
5699 if (TREE_CODE (typename) != TREE_LIST)
5701 return grokdeclarator (TREE_VALUE (typename),
5702 TREE_PURPOSE (typename),
5703 TYPENAME, 0, NULL_TREE);
5706 /* Decode a declarator in an ordinary declaration or data definition.
5707 This is called as soon as the type information and variable name
5708 have been parsed, before parsing the initializer if any.
5709 Here we create the ..._DECL node, fill in its type,
5710 and put it on the list of decls for the current context.
5711 The ..._DECL node is returned as the value.
5713 Exception: for arrays where the length is not specified,
5714 the type is left null, to be filled in by `cp_finish_decl'.
5716 Function definitions do not come here; they go to start_function
5717 instead. However, external and forward declarations of functions
5718 do go through here. Structure field declarations are done by
5719 grokfield and not through here. */
5721 /* Set this to zero to debug not using the temporary obstack
5722 to parse initializers. */
5723 int debug_temp_inits = 1;
5725 void start_decl_1 ();
5728 start_decl (declarator, declspecs, initialized)
5729 tree declarator, declspecs;
5733 register tree type, tem;
5735 extern int have_extern_spec;
5736 extern int used_extern_spec;
5739 /* See code below that used this. */
5740 int init_written = initialized;
5743 /* This should only be done once on the top most decl. */
5744 if (have_extern_spec && !used_extern_spec)
5746 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"),
5748 used_extern_spec = 1;
5751 decl = grokdeclarator (declarator, declspecs, NORMAL, initialized,
5753 if (decl == NULL_TREE || decl == void_type_node)
5756 type = TREE_TYPE (decl);
5758 /* Don't lose if destructors must be executed at file-level. */
5759 if (! processing_template_decl && TREE_STATIC (decl)
5760 && TYPE_NEEDS_DESTRUCTOR (complete_type (type))
5761 && !TREE_PERMANENT (decl))
5763 push_obstacks (&permanent_obstack, &permanent_obstack);
5764 decl = copy_node (decl);
5765 if (TREE_CODE (type) == ARRAY_TYPE)
5767 tree itype = TYPE_DOMAIN (type);
5768 if (itype && ! TREE_PERMANENT (itype))
5770 itype = build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype)));
5771 type = build_cplus_array_type (TREE_TYPE (type), itype);
5772 TREE_TYPE (decl) = type;
5779 = (TREE_CODE (decl) == FUNCTION_DECL && DECL_VIRTUAL_P (decl))
5780 ? DECL_CLASS_CONTEXT (decl)
5781 : DECL_CONTEXT (decl);
5784 /* Is it valid for this decl to have an initializer at all?
5785 If not, set INITIALIZED to zero, which will indirectly
5786 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
5787 switch (TREE_CODE (decl))
5790 /* typedef foo = bar means give foo the same type as bar.
5791 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
5792 Any other case of an initialization in a TYPE_DECL is an error. */
5793 if (pedantic || list_length (declspecs) > 1)
5795 cp_error ("typedef `%D' is initialized", decl);
5801 cp_error ("function `%#D' is initialized like a variable", decl);
5806 if (! processing_template_decl)
5808 if (TYPE_SIZE (type) != NULL_TREE
5809 && ! TREE_CONSTANT (TYPE_SIZE (type)))
5812 ("variable-sized object `%D' may not be initialized", decl);
5816 if (TREE_CODE (type) == ARRAY_TYPE
5817 && TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
5820 ("elements of array `%#D' have incomplete type", decl);
5828 if (! toplevel_bindings_p ()
5829 && DECL_EXTERNAL (decl))
5830 cp_warning ("declaration of `%#D' has `extern' and is initialized",
5832 DECL_EXTERNAL (decl) = 0;
5833 if (toplevel_bindings_p ())
5834 TREE_STATIC (decl) = 1;
5836 /* Tell `pushdecl' this is an initialized decl
5837 even though we don't yet have the initializer expression.
5838 Also tell `cp_finish_decl' it may store the real initializer. */
5839 DECL_INITIAL (decl) = error_mark_node;
5842 if (context && TYPE_SIZE (complete_type (context)) != NULL_TREE)
5844 if (TREE_CODE (decl) == VAR_DECL)
5846 tree field = lookup_field (context, DECL_NAME (decl), 0, 0);
5847 if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
5848 cp_error ("`%#D' is not a static member of `%#T'", decl, context);
5851 if (DECL_CONTEXT (field) != context)
5852 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));
5853 if (duplicate_decls (decl, field))
5859 tree field = check_classfn (context, decl);
5860 if (field && duplicate_decls (decl, field))
5864 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
5865 if (DECL_LANG_SPECIFIC (decl))
5866 DECL_IN_AGGR_P (decl) = 0;
5867 if (DECL_USE_TEMPLATE (decl) || CLASSTYPE_USE_TEMPLATE (context))
5868 SET_DECL_TEMPLATE_SPECIALIZATION (decl);
5870 /* Stupid stupid stupid stupid (jason 7/21/95) */
5871 if (pedantic && DECL_EXTERNAL (decl)
5872 && ! DECL_TEMPLATE_SPECIALIZATION (decl))
5873 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
5876 pushclass (context, 2);
5879 /* Add this decl to the current binding level, but not if it
5880 comes from another scope, e.g. a static member variable.
5881 TEM may equal DECL or it may be a previous decl of the same name. */
5883 if ((TREE_CODE (decl) != PARM_DECL && DECL_CONTEXT (decl) != NULL_TREE)
5884 || (TREE_CODE (decl) == TEMPLATE_DECL && !global_bindings_p ())
5885 || TREE_CODE (type) == LANG_TYPE)
5888 tem = pushdecl (decl);
5890 if (processing_template_decl)
5892 if (! current_function_decl)
5893 push_template_decl (tem);
5894 else if (minimal_parse_mode)
5896 = build_min_nt (DECL_STMT, copy_to_permanent (declarator),
5897 copy_to_permanent (declspecs),
5902 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
5903 /* Tell the back-end to use or not use .common as appropriate. If we say
5904 -fconserve-space, we want this to save .data space, at the expense of
5905 wrong semantics. If we say -fno-conserve-space, we want this to
5906 produce errors about redefs; to do this we force variables into the
5908 DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem);
5911 if (! processing_template_decl)
5914 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
5915 push_obstacks_nochange ();
5918 /* We have no way of knowing whether the initializer will need to be
5919 evaluated at run-time or not until we've parsed it, so let's just put
5920 it in the permanent obstack. (jason) */
5922 && ! (TREE_CODE (tem) == PARM_DECL
5923 || (TREE_READONLY (tem)
5924 && (TREE_CODE (tem) == VAR_DECL
5925 || TREE_CODE (tem) == FIELD_DECL))))
5927 /* When parsing and digesting the initializer,
5928 use temporary storage. Do this even if we will ignore the value. */
5929 if (toplevel_bindings_p () && debug_temp_inits)
5931 if (processing_template_decl
5932 || TYPE_NEEDS_CONSTRUCTING (type)
5933 || TREE_CODE (type) == REFERENCE_TYPE)
5934 /* In this case, the initializer must lay down in permanent
5935 storage, since it will be saved until `finish_file' is run. */
5938 temporary_allocation ();
5950 tree type = TREE_TYPE (decl);
5951 int initialized = (DECL_INITIAL (decl) != NULL_TREE);
5953 /* If this type of object needs a cleanup, and control may
5954 jump past it, make a new binding level so that it is cleaned
5955 up only when it is initialized first. */
5956 if (TYPE_NEEDS_DESTRUCTOR (type)
5957 && current_binding_level->more_cleanups_ok == 0)
5958 pushlevel_temporary (1);
5961 /* Is it valid for this decl to have an initializer at all?
5962 If not, set INITIALIZED to zero, which will indirectly
5963 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
5965 /* Don't allow initializations for incomplete types except for
5966 arrays which might be completed by the initialization. */
5967 if (type == error_mark_node)
5968 ; /* Don't complain again. */
5969 else if (TYPE_SIZE (complete_type (type)) != NULL_TREE)
5970 ; /* A complete type is ok. */
5971 else if (TREE_CODE (type) != ARRAY_TYPE)
5973 cp_error ("variable `%#D' has initializer but incomplete type",
5977 else if (TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
5979 if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
5980 cp_error ("elements of array `%#D' have incomplete type", decl);
5981 /* else we already gave an error in start_decl. */
5987 && TREE_CODE (decl) != TYPE_DECL
5988 && TREE_CODE (decl) != TEMPLATE_DECL
5989 && IS_AGGR_TYPE (type) && ! DECL_EXTERNAL (decl))
5991 if ((! processing_template_decl || ! uses_template_parms (type))
5992 && TYPE_SIZE (complete_type (type)) == NULL_TREE)
5994 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
5996 /* Change the type so that assemble_variable will give
5997 DECL an rtl we can live with: (mem (const_int 0)). */
5998 TREE_TYPE (decl) = error_mark_node;
5999 type = error_mark_node;
6003 /* If any base type in the hierarchy of TYPE needs a constructor,
6004 then we set initialized to 1. This way any nodes which are
6005 created for the purposes of initializing this aggregate
6006 will live as long as it does. This is necessary for global
6007 aggregates which do not have their initializers processed until
6008 the end of the file. */
6009 initialized = TYPE_NEEDS_CONSTRUCTING (type);
6014 /* We don't do this yet for GNU C++. */
6015 /* For a local variable, define the RTL now. */
6016 if (! toplevel_bindings_p ()
6017 /* But not if this is a duplicate decl
6018 and we preserved the rtl from the previous one
6019 (which may or may not happen). */
6020 && DECL_RTL (tem) == NULL_RTX)
6022 if (TYPE_SIZE (TREE_TYPE (tem)) != NULL_TREE)
6024 else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE
6025 && DECL_INITIAL (tem) != NULL_TREE)
6031 DECL_INITIAL (decl) = NULL_TREE;
6034 /* Handle initialization of references.
6035 These three arguments from from `cp_finish_decl', and have the
6036 same meaning here that they do there.
6038 Quotes on semantics can be found in ARM 8.4.3. */
6041 grok_reference_init (decl, type, init, cleanupp)
6042 tree decl, type, init;
6047 if (init == NULL_TREE)
6049 if ((DECL_LANG_SPECIFIC (decl) == 0
6050 || DECL_IN_AGGR_P (decl) == 0)
6051 && ! DECL_THIS_EXTERN (decl))
6053 cp_error ("`%D' declared as reference but not initialized", decl);
6054 if (TREE_CODE (decl) == VAR_DECL)
6055 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6060 if (init == error_mark_node)
6063 if (TREE_CODE (type) == REFERENCE_TYPE
6064 && TREE_CODE (init) == CONSTRUCTOR)
6066 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl);
6070 if (TREE_TYPE (init) && TREE_CODE (TREE_TYPE (init)) == UNKNOWN_TYPE)
6071 /* decay_conversion is probably wrong for references to functions. */
6072 init = decay_conversion (instantiate_type (TREE_TYPE (type), init, 1));
6074 if (TREE_CODE (init) == TREE_LIST)
6075 init = build_compound_expr (init);
6077 if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE)
6078 init = convert_from_reference (init);
6080 if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
6081 && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
6083 /* Note: default conversion is only called in very special cases. */
6084 init = default_conversion (init);
6087 tmp = convert_to_reference
6088 (type, init, CONV_IMPLICIT, LOOKUP_SPECULATIVELY|LOOKUP_NORMAL, decl);
6090 if (tmp == error_mark_node)
6092 else if (tmp != NULL_TREE)
6095 DECL_INITIAL (decl) = save_expr (init);
6099 cp_error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init));
6103 /* ?? Can this be optimized in some cases to
6104 hand back the DECL_INITIAL slot?? */
6105 if (TYPE_SIZE (TREE_TYPE (type)))
6107 init = convert_from_reference (decl);
6108 if (TREE_PERMANENT (decl))
6109 init = copy_to_permanent (init);
6110 SET_DECL_REFERENCE_SLOT (decl, init);
6113 if (TREE_STATIC (decl) && ! TREE_CONSTANT (DECL_INITIAL (decl)))
6115 expand_static_init (decl, DECL_INITIAL (decl));
6116 DECL_INITIAL (decl) = NULL_TREE;
6121 if (TREE_CODE (decl) == VAR_DECL)
6122 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6126 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6127 mucking with forces it does not comprehend (i.e. initialization with a
6128 constructor). If we are at global scope and won't go into COMMON, fill
6129 it in with a dummy CONSTRUCTOR to force the variable into .data;
6130 otherwise we can use error_mark_node. */
6133 obscure_complex_init (decl, init)
6136 if (! flag_no_inline && TREE_STATIC (decl))
6138 if (extract_init (decl, init))
6142 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6143 if (toplevel_bindings_p () && ! DECL_COMMON (decl))
6144 DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE,
6148 DECL_INITIAL (decl) = error_mark_node;
6153 /* Finish processing of a declaration;
6154 install its line number and initial value.
6155 If the length of an array type is not known before,
6156 it must be determined now, from the initial value, or it is an error.
6158 Call `pop_obstacks' iff NEED_POP is nonzero.
6160 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6161 for aggregates that have constructors alive on the permanent obstack,
6162 so that the global initializing functions can be written at the end.
6164 INIT0 holds the value of an initializer that should be allowed to escape
6167 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6168 if the (init) syntax was used.
6170 For functions that take default parameters, DECL points to its
6171 "maximal" instantiation. `cp_finish_decl' must then also declared its
6172 subsequently lower and lower forms of instantiation, checking for
6173 ambiguity as it goes. This can be sped up later. */
6176 cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
6183 tree cleanup = NULL_TREE, ttype;
6185 int temporary = allocation_temporary_p ();
6186 char *asmspec = NULL;
6187 int was_readonly = 0;
6189 /* If this is 0, then we did not change obstacks. */
6193 error ("assignment (not initialization) in declaration");
6197 /* If a name was specified, get the string. */
6199 asmspec = TREE_STRING_POINTER (asmspec_tree);
6201 /* If the type of the thing we are declaring either has
6202 a constructor, or has a virtual function table pointer,
6203 AND its initialization was accepted by `start_decl',
6204 then we stayed on the permanent obstack through the
6205 declaration, otherwise, changed obstacks as GCC would. */
6207 type = TREE_TYPE (decl);
6209 if (type == error_mark_node)
6211 if (toplevel_bindings_p () && temporary)
6212 end_temporary_allocation ();
6217 if (processing_template_decl)
6219 if (init && DECL_INITIAL (decl))
6220 DECL_INITIAL (decl) = init;
6221 if (minimal_parse_mode && ! DECL_ARTIFICIAL (decl))
6223 tree stmt = DECL_VINDEX (decl);
6224 DECL_VINDEX (decl) = NULL_TREE;
6225 TREE_OPERAND (stmt, 2) = copy_to_permanent (init);
6231 /* Take care of TYPE_DECLs up front. */
6232 if (TREE_CODE (decl) == TYPE_DECL)
6234 if (init && DECL_INITIAL (decl))
6236 /* typedef foo = bar; store the type of bar as the type of foo. */
6237 TREE_TYPE (decl) = type = TREE_TYPE (init);
6238 DECL_INITIAL (decl) = init = NULL_TREE;
6240 if (type != error_mark_node
6241 && IS_AGGR_TYPE (type) && DECL_NAME (decl))
6243 if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
6244 cp_warning ("shadowing previous type declaration of `%#D'", decl);
6245 set_identifier_type_value (DECL_NAME (decl), type);
6246 CLASSTYPE_GOT_SEMICOLON (type) = 1;
6248 GNU_xref_decl (current_function_decl, decl);
6250 /* If we have installed this as the canonical typedef for this
6251 type, and that type has not been defined yet, delay emitting
6252 the debug informaion for it, as we will emit it later. */
6253 if (TYPE_NAME (TREE_TYPE (decl)) == decl
6254 && TYPE_SIZE (TREE_TYPE (decl)) == NULL_TREE)
6255 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
6257 rest_of_decl_compilation (decl, NULL_PTR,
6258 DECL_CONTEXT (decl) == NULL_TREE, at_eof);
6261 if (TREE_CODE (decl) != FUNCTION_DECL)
6263 ttype = target_type (type);
6266 if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl)
6267 && TYPE_NEEDS_CONSTRUCTING (type))
6270 /* Currently, GNU C++ puts constants in text space, making them
6271 impossible to initialize. In the future, one would hope for
6272 an operating system which understood the difference between
6273 initialization and the running of a program. */
6275 TREE_READONLY (decl) = 0;
6278 if (TREE_CODE (decl) == FIELD_DECL)
6280 if (init && init != error_mark_node)
6281 my_friendly_assert (TREE_PERMANENT (init), 147);
6285 /* This must override the asm specifier which was placed
6286 by grokclassfn. Lay this out fresh. */
6287 DECL_RTL (TREE_TYPE (decl)) = NULL_RTX;
6288 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
6289 make_decl_rtl (decl, asmspec, 0);
6292 /* If `start_decl' didn't like having an initialization, ignore it now. */
6293 else if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE)
6295 else if (DECL_EXTERNAL (decl))
6297 else if (TREE_CODE (type) == REFERENCE_TYPE
6298 || (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE_REFERENCE (type)))
6300 if (TREE_STATIC (decl))
6301 make_decl_rtl (decl, NULL_PTR,
6302 toplevel_bindings_p ()
6303 || pseudo_global_level_p ());
6304 grok_reference_init (decl, type, init, &cleanup);
6308 GNU_xref_decl (current_function_decl, decl);
6310 if (TREE_CODE (decl) == FIELD_DECL)
6312 else if (TREE_CODE (decl) == CONST_DECL)
6314 my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148);
6316 DECL_INITIAL (decl) = init;
6318 /* This will keep us from needing to worry about our obstacks. */
6319 my_friendly_assert (init != NULL_TREE, 149);
6324 if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type))
6326 if (TREE_CODE (type) == ARRAY_TYPE)
6327 init = digest_init (type, init, (tree *) 0);
6328 else if (TREE_CODE (init) == CONSTRUCTOR)
6330 if (TYPE_NON_AGGREGATE_CLASS (type))
6332 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
6334 init = error_mark_node;
6337 goto dont_use_constructor;
6342 dont_use_constructor:
6343 if (TREE_CODE (init) != TREE_VEC)
6344 init = store_init_value (decl, init);
6348 /* We must hide the initializer so that expand_decl
6349 won't try to do something it does not understand. */
6350 init = obscure_complex_init (decl, init);
6352 else if (DECL_EXTERNAL (decl))
6354 else if (TREE_CODE_CLASS (TREE_CODE (type)) == 't'
6355 && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type)))
6358 while (TREE_CODE (ctype) == ARRAY_TYPE)
6359 ctype = TREE_TYPE (ctype);
6360 if (! TYPE_NEEDS_CONSTRUCTING (ctype))
6362 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype))
6363 cp_error ("structure `%D' with uninitialized const members", decl);
6364 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype))
6365 cp_error ("structure `%D' with uninitialized reference members",
6369 if (TREE_CODE (decl) == VAR_DECL
6370 && !DECL_INITIAL (decl)
6371 && !TYPE_NEEDS_CONSTRUCTING (type)
6372 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
6373 cp_error ("uninitialized const `%D'", decl);
6375 if (TYPE_SIZE (type) != NULL_TREE
6376 && TYPE_NEEDS_CONSTRUCTING (type))
6377 init = obscure_complex_init (decl, NULL_TREE);
6379 else if (TREE_CODE (decl) == VAR_DECL
6380 && TREE_CODE (type) != REFERENCE_TYPE
6381 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
6383 /* ``Unless explicitly declared extern, a const object does not have
6384 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
6385 However, if it's `const int foo = 1; const int foo;', don't complain
6386 about the second decl, since it does have an initializer before.
6387 We deliberately don't complain about arrays, because they're
6388 supposed to be initialized by a constructor. */
6389 if (! DECL_INITIAL (decl)
6390 && TREE_CODE (type) != ARRAY_TYPE
6391 && (!pedantic || !current_class_type))
6392 cp_error ("uninitialized const `%#D'", decl);
6395 /* For top-level declaration, the initial value was read in
6396 the temporary obstack. MAXINDEX, rtl, etc. to be made below
6397 must go in the permanent obstack; but don't discard the
6398 temporary data yet. */
6400 if (toplevel_bindings_p () && temporary)
6401 end_temporary_allocation ();
6403 /* Deduce size of array from initialization, if not already known. */
6405 if (TREE_CODE (type) == ARRAY_TYPE
6406 && TYPE_DOMAIN (type) == NULL_TREE
6407 && TREE_CODE (decl) != TYPE_DECL)
6410 = (TREE_STATIC (decl)
6411 /* Even if pedantic, an external linkage array
6412 may have incomplete type at first. */
6413 ? pedantic && ! DECL_EXTERNAL (decl)
6414 : !DECL_EXTERNAL (decl));
6415 tree initializer = init ? init : DECL_INITIAL (decl);
6416 int failure = complete_array_type (type, initializer, do_default);
6419 cp_error ("initializer fails to determine size of `%D'", decl);
6424 cp_error ("array size missing in `%D'", decl);
6425 /* If a `static' var's size isn't known, make it extern as
6426 well as static, so it does not get allocated. If it's not
6427 `static', then don't mark it extern; finish_incomplete_decl
6428 will give it a default size and it will get allocated. */
6429 else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
6430 DECL_EXTERNAL (decl) = 1;
6433 if (pedantic && TYPE_DOMAIN (type) != NULL_TREE
6434 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
6436 cp_error ("zero-size array `%D'", decl);
6438 layout_decl (decl, 0);
6441 if (TREE_CODE (decl) == VAR_DECL)
6443 if (DECL_SIZE (decl) == NULL_TREE
6444 && TYPE_SIZE (complete_type (TREE_TYPE (decl))) != NULL_TREE)
6445 layout_decl (decl, 0);
6447 if (TREE_STATIC (decl) && DECL_SIZE (decl) == NULL_TREE)
6449 /* A static variable with an incomplete type:
6450 that is an error if it is initialized.
6451 Otherwise, let it through, but if it is not `extern'
6452 then it may cause an error message later. */
6453 if (DECL_INITIAL (decl) != NULL_TREE)
6454 cp_error ("storage size of `%D' isn't known", decl);
6457 else if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
6459 /* An automatic variable with an incomplete type: that is an error.
6460 Don't talk about array types here, since we took care of that
6461 message in grokdeclarator. */
6462 cp_error ("storage size of `%D' isn't known", decl);
6463 TREE_TYPE (decl) = error_mark_node;
6465 else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype))
6466 /* Let debugger know it should output info for this type. */
6467 note_debug_info_needed (ttype);
6469 if (TREE_STATIC (decl) && DECL_CONTEXT (decl)
6470 && TREE_CODE_CLASS (TREE_CODE (DECL_CONTEXT (decl))) == 't')
6471 note_debug_info_needed (DECL_CONTEXT (decl));
6473 if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
6474 && DECL_SIZE (decl) != NULL_TREE
6475 && ! TREE_CONSTANT (DECL_SIZE (decl)))
6477 if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
6478 constant_expression_warning (DECL_SIZE (decl));
6480 cp_error ("storage size of `%D' isn't constant", decl);
6483 if (! DECL_EXTERNAL (decl) && TYPE_NEEDS_DESTRUCTOR (type)
6484 /* Cleanups for static variables are handled by `finish_file'. */
6485 && ! TREE_STATIC (decl))
6487 int yes = suspend_momentary ();
6488 cleanup = maybe_build_cleanup (decl);
6489 resume_momentary (yes);
6492 /* PARM_DECLs get cleanups, too. */
6493 else if (TREE_CODE (decl) == PARM_DECL && TYPE_NEEDS_DESTRUCTOR (type))
6496 end_temporary_allocation ();
6497 cleanup = maybe_build_cleanup (decl);
6499 resume_temporary_allocation ();
6502 /* Output the assembler code and/or RTL code for variables and functions,
6503 unless the type is an undefined structure or union.
6504 If not, it will get done when the type is completed. */
6506 was_incomplete = (DECL_SIZE (decl) == NULL_TREE);
6508 if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL
6509 || TREE_CODE (decl) == RESULT_DECL)
6511 /* ??? FIXME: What about nested classes? */
6512 int toplev = toplevel_bindings_p () || pseudo_global_level_p ();
6514 = (TREE_STATIC (decl) && TYPE_NEEDS_DESTRUCTOR (type)
6515 && allocation_temporary_p ());
6518 end_temporary_allocation ();
6520 if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl))
6521 make_decl_rtl (decl, NULL_PTR, toplev);
6522 else if (TREE_CODE (decl) == VAR_DECL
6523 && TREE_READONLY (decl)
6524 && DECL_INITIAL (decl) != NULL_TREE
6525 && DECL_INITIAL (decl) != error_mark_node
6526 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
6528 DECL_INITIAL (decl) = save_expr (DECL_INITIAL (decl));
6531 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
6534 && TREE_STATIC (decl)
6535 && ! TREE_SIDE_EFFECTS (decl)
6536 && ! TREE_PUBLIC (decl)
6537 && ! DECL_EXTERNAL (decl)
6538 && ! TYPE_NEEDS_DESTRUCTOR (type)
6539 && DECL_MODE (decl) != BLKmode)
6541 /* If this variable is really a constant, then fill its DECL_RTL
6542 slot with something which won't take up storage.
6543 If something later should take its address, we can always give
6544 it legitimate RTL at that time. */
6545 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
6546 store_expr (DECL_INITIAL (decl), DECL_RTL (decl), 0);
6547 TREE_ASM_WRITTEN (decl) = 1;
6549 else if (toplev && ! TREE_PUBLIC (decl))
6551 /* If this is a static const, change its apparent linkage
6552 if it belongs to a #pragma interface. */
6553 if (!interface_unknown)
6555 TREE_PUBLIC (decl) = 1;
6556 DECL_EXTERNAL (decl) = interface_only;
6558 make_decl_rtl (decl, asmspec, toplev);
6561 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6563 else if (TREE_CODE (decl) == VAR_DECL
6564 && DECL_LANG_SPECIFIC (decl)
6565 && DECL_IN_AGGR_P (decl))
6567 if (TREE_STATIC (decl))
6569 if (init == NULL_TREE
6570 #ifdef DEFAULT_STATIC_DEFS
6571 /* If this code is dead, then users must
6572 explicitly declare static member variables
6573 outside the class def'n as well. */
6574 && TYPE_NEEDS_CONSTRUCTING (type)
6578 DECL_EXTERNAL (decl) = 1;
6579 make_decl_rtl (decl, asmspec, 1);
6582 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6585 /* Just a constant field. Should not need any rtl. */
6589 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6592 resume_temporary_allocation ();
6594 if (type != error_mark_node
6595 && TYPE_LANG_SPECIFIC (type)
6596 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
6597 abstract_virtuals_error (decl, type);
6598 else if ((TREE_CODE (type) == FUNCTION_TYPE
6599 || TREE_CODE (type) == METHOD_TYPE)
6600 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
6601 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type)))
6602 abstract_virtuals_error (decl, TREE_TYPE (type));
6604 if (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE (type))
6605 signature_error (decl, type);
6606 else if ((TREE_CODE (type) == FUNCTION_TYPE
6607 || TREE_CODE (type) == METHOD_TYPE)
6608 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
6609 && IS_SIGNATURE (TREE_TYPE (type)))
6610 signature_error (decl, TREE_TYPE (type));
6612 if (TREE_CODE (decl) == FUNCTION_DECL)
6614 else if (DECL_EXTERNAL (decl)
6615 && ! (DECL_LANG_SPECIFIC (decl)
6616 && DECL_NOT_REALLY_EXTERN (decl)))
6619 DECL_INITIAL (decl) = init;
6621 else if (TREE_STATIC (decl) && type != error_mark_node)
6623 /* Cleanups for static variables are handled by `finish_file'. */
6624 if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE
6625 || TYPE_NEEDS_DESTRUCTOR (type))
6626 expand_static_init (decl, init);
6630 extern int temp_slot_level;
6631 extern int target_temp_slot_level;
6632 tree old_cleanups = cleanups_this_call;
6633 int old_temp_level = target_temp_slot_level;
6635 /* This is a declared decl which must live until the
6636 end of the binding contour. It may need a cleanup. */
6638 /* Recompute the RTL of a local array now
6639 if it used to be an incomplete type. */
6640 if (was_incomplete && ! TREE_STATIC (decl))
6642 /* If we used it already as memory, it must stay in memory. */
6643 TREE_ADDRESSABLE (decl) = TREE_USED (decl);
6644 /* If it's still incomplete now, no init will save it. */
6645 if (DECL_SIZE (decl) == NULL_TREE)
6646 DECL_INITIAL (decl) = NULL_TREE;
6649 else if (! TREE_ASM_WRITTEN (decl)
6650 && (TYPE_SIZE (type) != NULL_TREE
6651 || TREE_CODE (type) == ARRAY_TYPE))
6653 /* Do this here, because we did not expand this decl's
6654 rtl in start_decl. */
6655 if (DECL_RTL (decl) == NULL_RTX)
6659 /* XXX: Why don't we use decl here? */
6660 /* Ans: Because it was already expanded? */
6661 if (! expand_decl_cleanup (NULL_TREE, cleanup))
6662 cp_error ("parser lost in parsing declaration of `%D'",
6664 /* Cleanup used up here. */
6665 cleanup = NULL_TREE;
6669 if (current_binding_level->is_for_scope)
6671 struct binding_level *outer = current_binding_level->level_chain;
6673 /* Check to see if the same name is already bound at
6674 the outer level, either because it was directly declared,
6675 or because a dead for-decl got preserved. In either case,
6676 the code would not have been valid under the ARM
6677 scope rules, so clear is_for_scope for the
6678 current_binding_level.
6680 Otherwise, we need to preserve the temp slot for decl
6681 to last into the outer binding level. */
6683 int handling_dead_for_vars = 0;
6684 tree link = outer->names;
6685 for (; ; link = TREE_CHAIN (link))
6687 if (link == NULL && handling_dead_for_vars == 0)
6689 link = outer->dead_vars_from_for;
6690 handling_dead_for_vars = 1;
6694 if (DECL_IN_MEMORY_P (decl))
6695 preserve_temp_slots (DECL_RTL (decl));
6698 if (DECL_NAME (link) == DECL_NAME (decl))
6700 if (handling_dead_for_vars)
6703 = purpose_member (DECL_NAME (decl),
6704 current_binding_level->shadowed);
6705 if (shadowing && TREE_VALUE (shadowing) == link)
6706 TREE_VALUE (shadowing)
6707 = DECL_SHADOWED_FOR_VAR (link);
6709 current_binding_level->is_for_scope = 0;
6717 target_temp_slot_level = temp_slot_level;
6719 if (DECL_SIZE (decl) && type != error_mark_node)
6721 /* Compute and store the initial value. */
6722 expand_decl_init (decl);
6724 if (init || TYPE_NEEDS_CONSTRUCTING (type))
6726 emit_line_note (DECL_SOURCE_FILE (decl),
6727 DECL_SOURCE_LINE (decl));
6728 expand_aggr_init (decl, init, 0, flags);
6731 /* Set this to 0 so we can tell whether an aggregate which
6732 was initialized was ever used. Don't do this if it has a
6733 destructor, so we don't complain about the 'resource
6734 allocation is initialization' idiom. */
6735 if (TYPE_NEEDS_CONSTRUCTING (type)
6736 && cleanup == NULL_TREE
6737 && DECL_NAME (decl))
6738 TREE_USED (decl) = 0;
6740 /* Cleanup any temporaries needed for the initial value. */
6741 expand_cleanups_to (old_cleanups);
6744 target_temp_slot_level = old_temp_level;
6746 if (DECL_SIZE (decl) && type != error_mark_node)
6748 /* Store the cleanup, if there was one. */
6751 if (! expand_decl_cleanup (decl, cleanup))
6752 cp_error ("parser lost in parsing declaration of `%D'",
6759 /* Undo call to `pushclass' that was done in `start_decl'
6760 due to initialization of qualified member variable.
6761 I.e., Foo::x = 10; */
6763 tree context = DECL_REAL_CONTEXT (decl);
6765 && TREE_CODE_CLASS (TREE_CODE (context)) == 't'
6766 && (TREE_CODE (decl) == VAR_DECL
6767 /* We also have a pushclass done that we need to undo here
6768 if we're at top level and declare a method. */
6769 || TREE_CODE (decl) == FUNCTION_DECL)
6770 /* If size hasn't been set, we're still defining it,
6771 and therefore inside the class body; don't pop
6772 the binding level.. */
6773 && TYPE_SIZE (context) != NULL_TREE
6774 && context == current_class_type)
6781 /* If requested, warn about definitions of large data objects. */
6783 if (warn_larger_than
6784 && ! processing_template_decl
6785 && (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL)
6786 && !DECL_EXTERNAL (decl))
6788 register tree decl_size = DECL_SIZE (decl);
6790 if (decl_size && TREE_CODE (decl_size) == INTEGER_CST)
6792 unsigned units = TREE_INT_CST_LOW (decl_size) / BITS_PER_UNIT;
6794 if (units > larger_than_size)
6795 warning_with_decl (decl, "size of `%s' is %u bytes", units);
6801 /* Resume permanent allocation, if not within a function. */
6802 /* The corresponding push_obstacks_nochange is in start_decl,
6803 start_method, groktypename, and in grokfield. */
6808 TREE_READONLY (decl) = 1;
6811 /* This is here for a midend callback from c-common.c */
6814 finish_decl (decl, init, asmspec_tree)
6818 cp_finish_decl (decl, init, asmspec_tree, 1, 0);
6822 expand_static_init (decl, init)
6826 tree oldstatic = value_member (decl, static_aggregates);
6830 if (TREE_PURPOSE (oldstatic) && init != NULL_TREE)
6831 cp_error ("multiple initializations given for `%D'", decl);
6833 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
6835 /* Emit code to perform this initialization but once. */
6838 extern int temp_slot_level;
6839 extern int target_temp_slot_level;
6843 /* Remember this information until end of file. */
6844 push_obstacks (&permanent_obstack, &permanent_obstack);
6846 /* Emit code to perform this initialization but once. */
6847 temp = get_temp_name (integer_type_node, 1);
6848 rest_of_decl_compilation (temp, NULL_PTR, 0, 0);
6849 expand_start_cond (build_binary_op (EQ_EXPR, temp,
6850 integer_zero_node, 1), 0);
6851 old_cleanups = cleanups_this_call;
6852 old_temp_level = target_temp_slot_level;
6855 target_temp_slot_level = temp_slot_level;
6857 expand_assignment (temp, integer_one_node, 0, 0);
6858 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))
6859 || (init && TREE_CODE (init) == TREE_LIST))
6861 expand_aggr_init (decl, init, 0, 0);
6862 do_pending_stack_adjust ();
6865 expand_assignment (decl, init, 0, 0);
6867 /* Cleanup any temporaries needed for the initial value. */
6868 expand_cleanups_to (old_cleanups);
6871 target_temp_slot_level = old_temp_level;
6873 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
6875 tree cleanup, fcall;
6876 static tree Atexit = 0;
6879 tree atexit_fndecl, PFV, pfvlist;
6880 /* Remember this information until end of file. */
6881 push_obstacks (&permanent_obstack, &permanent_obstack);
6882 PFV = build_pointer_type (build_function_type
6883 (void_type_node, void_list_node));
6885 pfvlist = tree_cons (NULL_TREE, PFV, void_list_node);
6887 push_lang_context (lang_name_c);
6889 builtin_function ("atexit",
6890 build_function_type (void_type_node,
6892 NOT_BUILT_IN, NULL_PTR);
6893 assemble_external (atexit_fndecl);
6894 Atexit = default_conversion (atexit_fndecl);
6895 pop_lang_context ();
6899 cleanup = start_anon_func ();
6900 expand_expr_stmt (build_cleanup (decl));
6902 mark_addressable (cleanup);
6903 cleanup = build_unary_op (ADDR_EXPR, cleanup, 0);
6904 fcall = build_function_call (Atexit, tree_cons (NULL_TREE, cleanup, NULL_TREE));
6905 expand_expr_stmt (fcall);
6909 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
6911 static_aggregates = perm_tree_cons (temp, decl, static_aggregates);
6912 TREE_STATIC (static_aggregates) = 1;
6915 /* Resume old (possibly temporary) allocation. */
6920 /* This code takes into account memory allocation
6921 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
6922 does not hold for this object, then we must make permanent
6923 the storage currently in the temporary obstack. */
6924 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))
6925 preserve_initializer ();
6926 static_aggregates = perm_tree_cons (init, decl, static_aggregates);
6930 /* Make TYPE a complete type based on INITIAL_VALUE.
6931 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
6932 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
6935 complete_array_type (type, initial_value, do_default)
6936 tree type, initial_value;
6939 register tree maxindex = NULL_TREE;
6944 /* Note MAXINDEX is really the maximum index,
6945 one less than the size. */
6946 if (TREE_CODE (initial_value) == STRING_CST)
6949 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
6950 maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
6953 else if (TREE_CODE (initial_value) == CONSTRUCTOR)
6955 tree elts = CONSTRUCTOR_ELTS (initial_value);
6956 maxindex = size_binop (MINUS_EXPR, integer_zero_node, size_one_node);
6957 for (; elts; elts = TREE_CHAIN (elts))
6959 if (TREE_PURPOSE (elts))
6960 maxindex = TREE_PURPOSE (elts);
6962 maxindex = size_binop (PLUS_EXPR, maxindex, size_one_node);
6964 maxindex = copy_node (maxindex);
6968 /* Make an error message unless that happened already. */
6969 if (initial_value != error_mark_node)
6972 /* Prevent further error messages. */
6973 maxindex = build_int_2 (0, 0);
6980 maxindex = build_int_2 (0, 0);
6988 TYPE_DOMAIN (type) = build_index_type (maxindex);
6989 if (! TREE_TYPE (maxindex))
6990 TREE_TYPE (maxindex) = TYPE_DOMAIN (type);
6992 itype = TREE_TYPE (initial_value);
6995 if (itype && !TYPE_DOMAIN (itype))
6996 TYPE_DOMAIN (itype) = TYPE_DOMAIN (type);
6997 /* The type of the main variant should never be used for arrays
6998 of different sizes. It should only ever be completed with the
6999 size of the array. */
7000 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)))
7001 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = TYPE_DOMAIN (type);
7004 /* Lay out the type now that we can get the real answer. */
7011 /* Return zero if something is declared to be a member of type
7012 CTYPE when in the context of CUR_TYPE. STRING is the error
7013 message to print in that case. Otherwise, quietly return 1. */
7016 member_function_or_else (ctype, cur_type, string)
7017 tree ctype, cur_type;
7020 if (ctype && ctype != cur_type)
7022 error (string, TYPE_NAME_STRING (ctype));
7028 /* Subroutine of `grokdeclarator'. */
7030 /* Generate errors possibly applicable for a given set of specifiers.
7031 This is for ARM $7.1.2. */
7034 bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises)
7037 int virtualp, quals, friendp, raises, inlinep;
7040 cp_error ("`%D' declared as a `virtual' %s", object, type);
7042 cp_error ("`%D' declared as an `inline' %s", object, type);
7044 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7047 cp_error_at ("invalid friend declaration", object);
7049 cp_error_at ("invalid exception specifications", object);
7052 /* CTYPE is class type, or null if non-class.
7053 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7055 DECLARATOR is the function's name.
7056 VIRTUALP is truthvalue of whether the function is virtual or not.
7057 FLAGS are to be passed through to `grokclassfn'.
7058 QUALS are qualifiers indicating whether the function is `const'
7060 RAISES is a list of exceptions that this function can raise.
7061 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7062 not look, and -1 if we should not call `grokclassfn' at all. */
7065 grokfndecl (ctype, type, declarator, virtualp, flags, quals,
7066 raises, attrlist, check, publicp, inlinep, funcdef_flag)
7070 enum overload_flags flags;
7071 tree quals, raises, attrlist;
7072 int check, publicp, inlinep, funcdef_flag;
7075 int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
7078 cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL
7079 ? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype);
7085 type = build_exception_variant (type, raises);
7088 decl = build_lang_decl (FUNCTION_DECL, declarator, type);
7089 /* propagate volatile out from type to decl */
7090 if (TYPE_VOLATILE (type))
7091 TREE_THIS_VOLATILE (decl) = 1;
7093 /* Should probably propagate const out from type to decl I bet (mrs). */
7096 DECL_STATIC_FUNCTION_P (decl) = 1;
7097 DECL_CONTEXT (decl) = ctype;
7101 DECL_CLASS_CONTEXT (decl) = ctype;
7103 /* All function decls start out public; we'll fix their linkage later (at
7104 definition or EOF) if appropriate. */
7105 TREE_PUBLIC (decl) = 1;
7107 if (ctype == NULL_TREE && ! strcmp (IDENTIFIER_POINTER (declarator), "main"))
7110 error ("cannot declare `main' to be inline");
7112 error ("cannot declare `main' to be static");
7118 DECL_C_STATIC (decl) = 1;
7121 DECL_THIS_INLINE (decl) = DECL_INLINE (decl) = 1;
7123 DECL_EXTERNAL (decl) = 1;
7124 if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE)
7126 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7127 (ctype ? "static " : "non-"), decl, TREE_VALUE (quals));
7131 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl)))
7132 grok_op_properties (decl, virtualp, check < 0);
7134 if (ctype && hack_decl_function_context (decl))
7135 DECL_NO_STATIC_CHAIN (decl) = 1;
7137 /* Caller will do the rest of this. */
7141 if (check && funcdef_flag)
7142 DECL_INITIAL (decl) = error_mark_node;
7144 if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator)
7147 /* Just handle constructors here. We could do this
7148 inside the following if stmt, but I think
7149 that the code is more legible by breaking this
7150 case out. See comments below for what each of
7151 the following calls is supposed to do. */
7152 DECL_CONSTRUCTOR_P (decl) = 1;
7154 grokclassfn (ctype, declarator, decl, flags, quals);
7157 tmp = check_classfn (ctype, decl);
7158 if (tmp && DECL_ARTIFICIAL (tmp))
7159 cp_error ("definition of implicitly-declared `%D'", tmp);
7160 if (tmp && duplicate_decls (decl, tmp))
7163 if (! grok_ctor_properties (ctype, decl))
7166 if (check == 0 && ! current_function_decl)
7168 /* FIXME: this should only need to look at
7169 IDENTIFIER_GLOBAL_VALUE. */
7170 tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0);
7171 if (tmp == NULL_TREE)
7172 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl;
7173 else if (TREE_CODE (tmp) != TREE_CODE (decl))
7174 cp_error ("inconsistent declarations for `%D'", decl);
7177 duplicate_decls (decl, tmp);
7179 /* avoid creating circularities. */
7180 DECL_CHAIN (decl) = NULL_TREE;
7182 make_decl_rtl (decl, NULL_PTR, 1);
7189 /* Function gets the ugly name, field gets the nice one.
7190 This call may change the type of the function (because
7191 of default parameters)! */
7192 if (ctype != NULL_TREE)
7193 grokclassfn (ctype, cname, decl, flags, quals);
7195 if (ctype != NULL_TREE && check)
7197 tmp = check_classfn (ctype, decl);
7198 if (tmp && DECL_STATIC_FUNCTION_P (tmp)
7199 && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
7201 /* Remove the `this' parm added by grokclassfn.
7202 XXX Isn't this done in start_function, too? */
7203 revert_static_member_fn (&decl, NULL, NULL);
7204 last_function_parms = TREE_CHAIN (last_function_parms);
7206 if (tmp && DECL_ARTIFICIAL (tmp))
7207 cp_error ("definition of implicitly-declared `%D'", tmp);
7208 if (tmp && duplicate_decls (decl, tmp))
7212 if (ctype == NULL_TREE || check)
7215 /* Now install the declaration of this function so that others may
7216 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
7218 if (! current_function_decl)
7220 /* FIXME: this should only need to look at
7221 IDENTIFIER_GLOBAL_VALUE. */
7222 tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0);
7223 if (tmp == NULL_TREE)
7224 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl;
7225 else if (TREE_CODE (tmp) != TREE_CODE (decl))
7226 cp_error ("inconsistent declarations for `%D'", decl);
7229 duplicate_decls (decl, tmp);
7231 /* avoid creating circularities. */
7232 DECL_CHAIN (decl) = NULL_TREE;
7236 cplus_decl_attributes (decl, TREE_PURPOSE (attrlist),
7237 TREE_VALUE (attrlist));
7238 make_decl_rtl (decl, NULL_PTR, 1);
7242 DECL_VIRTUAL_P (decl) = 1;
7243 if (DECL_VINDEX (decl) == NULL_TREE)
7244 DECL_VINDEX (decl) = error_mark_node;
7245 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl)) = 1;
7252 grokvardecl (type, declarator, specbits, initialized, constp)
7255 RID_BIT_TYPE specbits;
7261 if (TREE_CODE (type) == OFFSET_TYPE)
7263 /* If you declare a static member so that it
7264 can be initialized, the code will reach here. */
7265 tree basetype = TYPE_OFFSET_BASETYPE (type);
7266 type = TREE_TYPE (type);
7267 decl = build_lang_field_decl (VAR_DECL, declarator, type);
7268 DECL_CONTEXT (decl) = basetype;
7269 DECL_CLASS_CONTEXT (decl) = basetype;
7270 DECL_ASSEMBLER_NAME (decl) = build_static_name (basetype, declarator);
7273 decl = build_decl (VAR_DECL, declarator, complete_type (type));
7275 DECL_ASSEMBLER_NAME (decl) = current_namespace_id (DECL_ASSEMBLER_NAME (decl));
7277 if (RIDBIT_SETP (RID_EXTERN, specbits))
7279 DECL_THIS_EXTERN (decl) = 1;
7280 DECL_EXTERNAL (decl) = !initialized;
7283 /* In class context, static means one per class,
7284 public access, and static storage. */
7285 if (DECL_FIELD_CONTEXT (decl) != NULL_TREE
7286 && IS_AGGR_TYPE (DECL_FIELD_CONTEXT (decl)))
7288 TREE_PUBLIC (decl) = 1;
7289 TREE_STATIC (decl) = 1;
7290 DECL_EXTERNAL (decl) = 0;
7292 /* At top level, either `static' or no s.c. makes a definition
7293 (perhaps tentative), and absence of `static' makes it public. */
7294 else if (toplevel_bindings_p ())
7296 TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits)
7297 && (DECL_THIS_EXTERN (decl) || ! constp));
7298 TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
7300 /* Not at top level, only `static' makes a static definition. */
7303 TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits);
7304 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
7309 /* Create a canonical pointer to member function type. */
7312 build_ptrmemfunc_type (type)
7319 /* If a canonical type already exists for this type, use it. We use
7320 this method instead of type_hash_canon, because it only does a
7321 simple equality check on the list of field members. */
7323 if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
7326 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
7328 u = make_lang_type (UNION_TYPE);
7329 IS_AGGR_TYPE (u) = 0;
7330 fields[0] = build_lang_field_decl (FIELD_DECL, pfn_identifier, type);
7331 fields[1] = build_lang_field_decl (FIELD_DECL, delta2_identifier,
7333 finish_builtin_type (u, "__ptrmemfunc_type", fields, 1, ptr_type_node);
7334 TYPE_NAME (u) = NULL_TREE;
7336 t = make_lang_type (RECORD_TYPE);
7338 /* Let the front-end know this is a pointer to member function. */
7339 TYPE_PTRMEMFUNC_FLAG (t) = 1;
7340 /* and not really an aggregate. */
7341 IS_AGGR_TYPE (t) = 0;
7343 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
7345 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
7347 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_or_delta2_identifier, u);
7348 finish_builtin_type (t, "__ptrmemfunc_type", fields, 2, ptr_type_node);
7352 /* Zap out the name so that the back-end will give us the debugging
7353 information for this anonymous RECORD_TYPE. */
7354 TYPE_NAME (t) = NULL_TREE;
7356 TYPE_SET_PTRMEMFUNC_TYPE (type, t);
7358 /* Seems to be wanted. */
7359 CLASSTYPE_GOT_SEMICOLON (t) = 1;
7363 /* Given declspecs and a declarator,
7364 determine the name and type of the object declared
7365 and construct a ..._DECL node for it.
7366 (In one case we can return a ..._TYPE node instead.
7367 For invalid input we sometimes return 0.)
7369 DECLSPECS is a chain of tree_list nodes whose value fields
7370 are the storage classes and type specifiers.
7372 DECL_CONTEXT says which syntactic context this declaration is in:
7373 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
7374 FUNCDEF for a function definition. Like NORMAL but a few different
7375 error messages in each case. Return value may be zero meaning
7376 this definition is too screwy to try to parse.
7377 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
7378 handle member functions (which have FIELD context).
7379 Return value may be zero meaning this definition is too screwy to
7381 PARM for a parameter declaration (either within a function prototype
7382 or before a function body). Make a PARM_DECL, or return void_type_node.
7383 CATCHPARM for a parameter declaration before a catch clause.
7384 TYPENAME if for a typename (in a cast or sizeof).
7385 Don't make a DECL node; just return the ..._TYPE node.
7386 FIELD for a struct or union field; make a FIELD_DECL.
7387 BITFIELD for a field with specified width.
7388 INITIALIZED is 1 if the decl has an initializer.
7390 In the TYPENAME case, DECLARATOR is really an absolute declarator.
7391 It may also be so in the PARM case, for a prototype where the
7392 argument type is specified but not the name.
7394 This function is where the complicated C meanings of `static'
7395 and `extern' are interpreted.
7397 For C++, if there is any monkey business to do, the function which
7398 calls this one must do it, i.e., prepending instance variables,
7399 renaming overloaded function names, etc.
7401 Note that for this C++, it is an error to define a method within a class
7402 which does not belong to that class.
7404 Except in the case where SCOPE_REFs are implicitly known (such as
7405 methods within a class being redundantly qualified),
7406 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
7407 (class_name::decl_name). The caller must also deal with this.
7409 If a constructor or destructor is seen, and the context is FIELD,
7410 then the type gains the attribute TREE_HAS_x. If such a declaration
7411 is erroneous, NULL_TREE is returned.
7413 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
7414 function, these are the qualifiers to give to the `this' pointer.
7416 May return void_type_node if the declarator turned out to be a friend.
7417 See grokfield for details. */
7419 enum return_types { return_normal, return_ctor, return_dtor, return_conversion };
7422 grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
7425 enum decl_context decl_context;
7429 RID_BIT_TYPE specbits;
7432 tree type = NULL_TREE;
7436 int virtualp, explicitp, friendp, inlinep, staticp;
7437 int explicit_int = 0;
7438 int explicit_char = 0;
7439 int opaque_typedef = 0;
7440 tree typedef_decl = NULL_TREE;
7442 tree typedef_type = NULL_TREE;
7443 int funcdef_flag = 0;
7444 enum tree_code innermost_code = ERROR_MARK;
7447 /* See the code below that used this. */
7448 tree decl_machine_attr = NULL_TREE;
7450 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
7451 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
7452 tree init = NULL_TREE;
7454 /* Keep track of what sort of function is being processed
7455 so that we can warn about default return values, or explicit
7456 return values which do not match prescribed defaults. */
7457 enum return_types return_type = return_normal;
7459 tree dname = NULL_TREE;
7460 tree ctype = current_class_type;
7461 tree ctor_return_type = NULL_TREE;
7462 enum overload_flags flags = NO_SPECIAL;
7463 tree quals = NULL_TREE;
7464 tree raises = NULL_TREE;
7466 RIDBIT_RESET_ALL (specbits);
7467 if (decl_context == FUNCDEF)
7468 funcdef_flag = 1, decl_context = NORMAL;
7469 else if (decl_context == MEMFUNCDEF)
7470 funcdef_flag = -1, decl_context = FIELD;
7471 else if (decl_context == BITFIELD)
7472 bitfield = 1, decl_context = FIELD;
7474 /* Look inside a declarator for the name being declared
7475 and get it as a string, for an error message. */
7477 tree *next = &declarator;
7481 while (next && *next)
7484 switch (TREE_CODE (decl))
7488 next = &TREE_OPERAND (decl, 0);
7491 case BIT_NOT_EXPR: /* for C++ destructors! */
7493 tree name = TREE_OPERAND (decl, 0);
7494 tree rename = NULL_TREE;
7496 my_friendly_assert (flags == NO_SPECIAL, 152);
7498 return_type = return_dtor;
7499 if (TREE_CODE (name) == TYPE_DECL)
7500 TREE_OPERAND (decl, 0) = name = constructor_name (name);
7501 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153);
7502 if (ctype == NULL_TREE)
7504 if (current_class_type == NULL_TREE)
7506 error ("destructors must be member functions");
7511 tree t = constructor_name (current_class_name);
7518 tree t = constructor_name (ctype);
7525 cp_error ("destructor `%T' must match class name `%T'",
7527 TREE_OPERAND (decl, 0) = rename;
7533 case ADDR_EXPR: /* C++ reference declaration */
7538 innermost_code = TREE_CODE (decl);
7539 next = &TREE_OPERAND (decl, 0);
7543 if (parmlist_is_exprlist (TREE_OPERAND (decl, 1)))
7545 /* This is actually a variable declaration using constructor
7546 syntax. We need to call start_decl and cp_finish_decl so we
7547 can get the variable initialized... */
7549 *next = TREE_OPERAND (decl, 0);
7550 init = TREE_OPERAND (decl, 1);
7552 decl = start_decl (declarator, declspecs, 1);
7553 finish_decl (decl, init, NULL_TREE);
7556 innermost_code = TREE_CODE (decl);
7557 if (decl_context == FIELD && ctype == NULL_TREE)
7558 ctype = current_class_type;
7560 && TREE_OPERAND (decl, 0)
7561 && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL
7562 && ((DECL_NAME (TREE_OPERAND (decl, 0))
7563 == constructor_name_full (ctype))
7564 || (DECL_NAME (TREE_OPERAND (decl, 0))
7565 == constructor_name (ctype)))))
7566 TREE_OPERAND (decl, 0) = constructor_name (ctype);
7567 next = &TREE_OPERAND (decl, 0);
7569 if (ctype != NULL_TREE
7570 && decl != NULL_TREE && flags != DTOR_FLAG
7571 && decl == constructor_name (ctype))
7573 return_type = return_ctor;
7574 ctor_return_type = ctype;
7579 case IDENTIFIER_NODE:
7585 cp_error ("declarator-id missing; using reserved word `%D'",
7587 name = IDENTIFIER_POINTER (dname);
7589 if (! IDENTIFIER_OPNAME_P (dname)
7590 /* Linux headers use '__op'. Arrgh. */
7591 || IDENTIFIER_TYPENAME_P (dname) && ! TREE_TYPE (dname))
7592 name = IDENTIFIER_POINTER (dname);
7595 if (IDENTIFIER_TYPENAME_P (dname))
7597 my_friendly_assert (flags == NO_SPECIAL, 154);
7598 flags = TYPENAME_FLAG;
7599 ctor_return_type = TREE_TYPE (dname);
7600 return_type = return_conversion;
7602 name = operator_name_string (dname);
7609 /* Perform error checking, and decide on a ctype. */
7610 tree cname = TREE_OPERAND (decl, 0);
7611 if (cname == NULL_TREE)
7613 else if (! is_aggr_type (cname, 1))
7614 TREE_OPERAND (decl, 0) = NULL_TREE;
7615 /* Must test TREE_OPERAND (decl, 1), in case user gives
7616 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
7617 else if (TREE_OPERAND (decl, 1)
7618 && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)
7620 else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM)
7622 cp_error ("`%T::%D' is not a valid declarator", cname,
7623 TREE_OPERAND (decl, 1));
7624 cp_error (" perhaps you want `typename %T::%D' to make it a type",
7625 cname, TREE_OPERAND (decl, 1));
7626 return void_type_node;
7628 else if (ctype == NULL_TREE)
7630 else if (TREE_COMPLEXITY (decl) == current_class_depth)
7631 TREE_OPERAND (decl, 0) = ctype;
7634 if (! UNIQUELY_DERIVED_FROM_P (cname, ctype))
7636 cp_error ("type `%T' is not derived from type `%T'",
7638 TREE_OPERAND (decl, 0) = NULL_TREE;
7644 if (ctype && TREE_CODE (TREE_OPERAND (decl, 1)) == TYPE_DECL
7645 && ((DECL_NAME (TREE_OPERAND (decl, 1))
7646 == constructor_name_full (ctype))
7647 || (DECL_NAME (TREE_OPERAND (decl, 1))
7648 == constructor_name (ctype))))
7649 TREE_OPERAND (decl, 1) = constructor_name (ctype);
7650 next = &TREE_OPERAND (decl, 1);
7654 if (TREE_CODE (decl) == IDENTIFIER_NODE
7655 && constructor_name (ctype) == decl)
7657 return_type = return_ctor;
7658 ctor_return_type = ctype;
7660 else if (TREE_CODE (decl) == BIT_NOT_EXPR
7661 && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE
7662 && (constructor_name (ctype) == TREE_OPERAND (decl, 0)
7663 || constructor_name_full (ctype) == TREE_OPERAND (decl, 0)))
7665 return_type = return_dtor;
7666 ctor_return_type = ctype;
7668 TREE_OPERAND (decl, 0) = constructor_name (ctype);
7669 next = &TREE_OPERAND (decl, 0);
7680 /* Parse error puts this typespec where
7681 a declarator should go. */
7682 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl));
7683 if (TREE_TYPE (decl) == current_class_type)
7684 cp_error (" perhaps you want `%T' for a constructor",
7685 current_class_name);
7686 dname = DECL_NAME (decl);
7687 name = IDENTIFIER_POINTER (dname);
7689 /* Avoid giving two errors for this. */
7690 IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE;
7692 declspecs = temp_tree_cons (NULL_TREE, integer_type_node,
7699 cp_compiler_error ("`%D' as declarator", decl);
7700 return 0; /* We used to do a 155 abort here. */
7707 /* A function definition's declarator must have the form of
7708 a function declarator. */
7710 if (funcdef_flag && innermost_code != CALL_EXPR)
7713 if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
7714 && innermost_code != CALL_EXPR
7715 && ! (ctype && declspecs == NULL_TREE))
7717 cp_error ("declaration of `%D' as non-function", dname);
7718 return void_type_node;
7721 /* Anything declared one level down from the top level
7722 must be one of the parameters of a function
7723 (because the body is at least two levels down). */
7725 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
7726 by not allowing C++ class definitions to specify their parameters
7727 with xdecls (must be spec.d in the parmlist).
7729 Since we now wait to push a class scope until we are sure that
7730 we are in a legitimate method context, we must set oldcname
7731 explicitly (since current_class_name is not yet alive).
7733 We also want to avoid calling this a PARM if it is in a namespace. */
7735 if (decl_context == NORMAL && ! namespace_bindings_p ()
7736 && ! pseudo_global_level_p ())
7738 struct binding_level *b = current_binding_level;
7739 current_binding_level = b->level_chain;
7740 if (current_binding_level != 0 && toplevel_bindings_p ())
7741 decl_context = PARM;
7742 current_binding_level = b;
7745 /* Look through the decl specs and record which ones appear.
7746 Some typespecs are defined as built-in typenames.
7747 Others, the ones that are modifiers of other types,
7748 are represented by bits in SPECBITS: set the bits for
7749 the modifiers that appear. Storage class keywords are also in SPECBITS.
7751 If there is a typedef name or a type, store the type in TYPE.
7752 This includes builtin typedefs such as `int'.
7754 Set EXPLICIT_INT if the type is `int' or `char' and did not
7755 come from a user typedef.
7757 Set LONGLONG if `long' is mentioned twice.
7759 For C++, constructors and destructors have their own fast treatment. */
7761 for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
7766 /* Certain parse errors slip through. For example,
7767 `int class;' is not caught by the parser. Try
7768 weakly to recover here. */
7769 if (TREE_CODE (spec) != TREE_LIST)
7772 id = TREE_VALUE (spec);
7774 if (TREE_CODE (id) == IDENTIFIER_NODE)
7776 if (id == ridpointers[(int) RID_INT]
7777 || id == ridpointers[(int) RID_CHAR]
7778 || id == ridpointers[(int) RID_BOOL]
7779 || id == ridpointers[(int) RID_WCHAR])
7783 if (id == ridpointers[(int) RID_BOOL])
7784 error ("`bool' is now a keyword");
7786 cp_error ("extraneous `%T' ignored", id);
7790 if (id == ridpointers[(int) RID_INT])
7792 else if (id == ridpointers[(int) RID_CHAR])
7794 type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id));
7798 /* C++ aggregate types. */
7799 if (IDENTIFIER_HAS_TYPE_VALUE (id))
7802 cp_error ("multiple declarations `%T' and `%T'", type, id);
7804 type = IDENTIFIER_TYPE_VALUE (id);
7808 for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++)
7810 if (ridpointers[i] == id)
7812 if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits))
7814 if (pedantic && ! in_system_header)
7815 pedwarn ("ANSI C++ does not support `long long'");
7817 error ("`long long long' is too long for GCC");
7821 else if (RIDBIT_SETP (i, specbits))
7822 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id));
7823 RIDBIT_SET (i, specbits);
7828 /* C++ aggregate types. */
7829 else if (TREE_CODE (id) == TYPE_DECL)
7832 cp_error ("multiple declarations `%T' and `%T'", type,
7836 type = TREE_TYPE (id);
7837 if (TREE_CODE (type) == TYPENAME_TYPE
7838 && TYPE_CONTEXT (type) == current_class_type)
7840 /* Members of the current class get resolved immediately;
7841 we couldn't catch this one earlier because we hadn't
7842 pushed into the class yet. */
7843 if (TREE_TYPE (type))
7844 type = TREE_TYPE (type);
7846 type = make_typename_type (TYPE_CONTEXT (type),
7847 TYPE_IDENTIFIER (type));
7849 TREE_VALUE (spec) = type;
7854 error ("two or more data types in declaration of `%s'", name);
7855 else if (TREE_CODE (id) == IDENTIFIER_NODE)
7857 register tree t = lookup_name (id, 1);
7858 if (!t || TREE_CODE (t) != TYPE_DECL)
7859 error ("`%s' fails to be a typedef or built in type",
7860 IDENTIFIER_POINTER (id));
7863 type = TREE_TYPE (t);
7865 /* See the code below that used this. */
7866 decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id);
7871 else if (TREE_CODE (id) != ERROR_MARK)
7872 /* Can't change CLASS nodes into RECORD nodes here! */
7878 typedef_type = type;
7880 /* No type at all: default to `int', and set EXPLICIT_INT
7881 because it was not a user-defined typedef.
7882 Except when we have a `typedef' inside a signature, in
7883 which case the type defaults to `unknown type' and is
7884 instantiated when assigning to a signature pointer or ref. */
7886 if (type == NULL_TREE
7887 && (RIDBIT_SETP (RID_SIGNED, specbits)
7888 || RIDBIT_SETP (RID_UNSIGNED, specbits)
7889 || RIDBIT_SETP (RID_LONG, specbits)
7890 || RIDBIT_SETP (RID_SHORT, specbits)))
7892 /* These imply 'int'. */
7893 type = integer_type_node;
7897 if (type == NULL_TREE)
7900 if (return_type == return_dtor)
7901 type = void_type_node;
7902 else if (return_type == return_ctor)
7903 type = build_pointer_type (ctor_return_type);
7904 else if (return_type == return_conversion)
7905 type = ctor_return_type;
7906 else if (current_class_type
7907 && IS_SIGNATURE (current_class_type)
7908 && RIDBIT_SETP (RID_TYPEDEF, specbits)
7909 && (decl_context == FIELD || decl_context == NORMAL))
7913 type = copy_node (opaque_type_node);
7919 if (warn_return_type
7920 && return_type == return_normal)
7921 /* Save warning until we know what is really going on. */
7922 warn_about_return_type = 1;
7924 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
7925 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
7926 else if (declspecs == NULL_TREE &&
7927 (innermost_code != CALL_EXPR || pedantic))
7928 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type or storage class",
7930 type = integer_type_node;
7933 else if (return_type == return_dtor)
7935 error ("return type specification for destructor invalid");
7936 type = void_type_node;
7938 else if (return_type == return_ctor)
7940 error ("return type specification for constructor invalid");
7941 type = build_pointer_type (ctor_return_type);
7943 else if (return_type == return_conversion)
7945 if (comptypes (type, ctor_return_type, 1) == 0)
7946 cp_error ("operator `%T' declared to return `%T'",
7947 ctor_return_type, type);
7949 cp_pedwarn ("return type specified for `operator %T'",
7952 type = ctor_return_type;
7957 /* Now process the modifiers that were specified
7958 and check for invalid combinations. */
7960 /* Long double is a special combination. */
7962 if (RIDBIT_SETP (RID_LONG, specbits)
7963 && TYPE_MAIN_VARIANT (type) == double_type_node)
7965 RIDBIT_RESET (RID_LONG, specbits);
7966 type = build_type_variant (long_double_type_node, TYPE_READONLY (type),
7967 TYPE_VOLATILE (type));
7970 /* Check all other uses of type modifiers. */
7972 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
7973 || RIDBIT_SETP (RID_SIGNED, specbits)
7974 || RIDBIT_SETP (RID_LONG, specbits)
7975 || RIDBIT_SETP (RID_SHORT, specbits))
7979 if (TREE_CODE (type) == REAL_TYPE)
7980 error ("short, signed or unsigned invalid for `%s'", name);
7981 else if (TREE_CODE (type) != INTEGER_TYPE)
7982 error ("long, short, signed or unsigned invalid for `%s'", name);
7983 else if (RIDBIT_SETP (RID_LONG, specbits)
7984 && RIDBIT_SETP (RID_SHORT, specbits))
7985 error ("long and short specified together for `%s'", name);
7986 else if ((RIDBIT_SETP (RID_LONG, specbits)
7987 || RIDBIT_SETP (RID_SHORT, specbits))
7989 error ("long or short specified with char for `%s'", name);
7990 else if ((RIDBIT_SETP (RID_LONG, specbits)
7991 || RIDBIT_SETP (RID_SHORT, specbits))
7992 && TREE_CODE (type) == REAL_TYPE)
7993 error ("long or short specified with floating type for `%s'", name);
7994 else if (RIDBIT_SETP (RID_SIGNED, specbits)
7995 && RIDBIT_SETP (RID_UNSIGNED, specbits))
7996 error ("signed and unsigned given together for `%s'", name);
8000 if (!explicit_int && !explicit_char && pedantic)
8002 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8004 if (flag_pedantic_errors)
8009 /* Discard the type modifiers if they are invalid. */
8012 RIDBIT_RESET (RID_UNSIGNED, specbits);
8013 RIDBIT_RESET (RID_SIGNED, specbits);
8014 RIDBIT_RESET (RID_LONG, specbits);
8015 RIDBIT_RESET (RID_SHORT, specbits);
8020 /* Decide whether an integer type is signed or not.
8021 Optionally treat bitfields as signed by default. */
8022 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
8023 || (bitfield && ! flag_signed_bitfields
8024 && (explicit_int || explicit_char
8025 /* A typedef for plain `int' without `signed'
8026 can be controlled just like plain `int'. */
8027 || ! (typedef_decl != NULL_TREE
8028 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
8029 && TREE_CODE (type) != ENUMERAL_TYPE
8030 && RIDBIT_NOTSETP (RID_SIGNED, specbits)))
8033 type = long_long_unsigned_type_node;
8034 else if (RIDBIT_SETP (RID_LONG, specbits))
8035 type = long_unsigned_type_node;
8036 else if (RIDBIT_SETP (RID_SHORT, specbits))
8037 type = short_unsigned_type_node;
8038 else if (type == char_type_node)
8039 type = unsigned_char_type_node;
8040 else if (typedef_decl)
8041 type = unsigned_type (type);
8043 type = unsigned_type_node;
8045 else if (RIDBIT_SETP (RID_SIGNED, specbits)
8046 && type == char_type_node)
8047 type = signed_char_type_node;
8049 type = long_long_integer_type_node;
8050 else if (RIDBIT_SETP (RID_LONG, specbits))
8051 type = long_integer_type_node;
8052 else if (RIDBIT_SETP (RID_SHORT, specbits))
8053 type = short_integer_type_node;
8055 /* Set CONSTP if this declaration is `const', whether by
8056 explicit specification or via a typedef.
8057 Likewise for VOLATILEP. */
8059 constp = !! RIDBIT_SETP (RID_CONST, specbits) + TYPE_READONLY (type);
8060 volatilep = !! RIDBIT_SETP (RID_VOLATILE, specbits) + TYPE_VOLATILE (type);
8062 inlinep = !! RIDBIT_SETP (RID_INLINE, specbits);
8063 virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits);
8064 RIDBIT_RESET (RID_VIRTUAL, specbits);
8065 explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0;
8066 RIDBIT_RESET (RID_EXPLICIT, specbits);
8068 if (RIDBIT_SETP (RID_STATIC, specbits))
8069 staticp = 1 + (decl_context == FIELD);
8071 if (virtualp && staticp == 2)
8073 cp_error ("member `%D' cannot be declared both virtual and static",
8077 friendp = RIDBIT_SETP (RID_FRIEND, specbits);
8078 RIDBIT_RESET (RID_FRIEND, specbits);
8080 if (RIDBIT_SETP (RID_MUTABLE, specbits))
8082 if (decl_context == PARM)
8084 error ("non-member `%s' cannot be declared `mutable'", name);
8085 RIDBIT_RESET (RID_MUTABLE, specbits);
8087 else if (friendp || decl_context == TYPENAME)
8089 error ("non-object member `%s' cannot be declared `mutable'", name);
8090 RIDBIT_RESET (RID_MUTABLE, specbits);
8094 /* Warn if two storage classes are given. Default to `auto'. */
8096 if (RIDBIT_ANY_SET (specbits))
8098 if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++;
8099 if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++;
8100 if (decl_context == PARM && nclasses > 0)
8101 error ("storage class specifiers invalid in parameter declarations");
8102 if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8104 if (decl_context == PARM)
8105 error ("typedef declaration invalid in parameter declaration");
8108 if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++;
8109 if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++;
8112 /* Give error if `virtual' is used outside of class declaration. */
8114 && (current_class_name == NULL_TREE || decl_context != FIELD))
8116 error ("virtual outside class declaration");
8119 if (current_class_name == NULL_TREE && RIDBIT_SETP (RID_MUTABLE, specbits))
8121 error ("only members can be declared mutable");
8122 RIDBIT_RESET (RID_MUTABLE, specbits);
8125 /* Static anonymous unions are dealt with here. */
8126 if (staticp && decl_context == TYPENAME
8127 && TREE_CODE (declspecs) == TREE_LIST
8128 && TREE_CODE (TREE_VALUE (declspecs)) == UNION_TYPE
8129 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (TREE_VALUE (declspecs))))
8130 decl_context = FIELD;
8132 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
8133 is used in a signature member function declaration. */
8134 if (decl_context == FIELD
8135 && IS_SIGNATURE (current_class_type)
8136 && RIDBIT_NOTSETP (RID_TYPEDEF, specbits))
8140 error ("`const' specified for signature member function `%s'", name);
8145 error ("`volatile' specified for signature member function `%s'",
8151 error ("`inline' specified for signature member function `%s'", name);
8152 /* Later, we'll make signature member functions inline. */
8157 error ("`friend' declaration in signature definition");
8162 error ("`virtual' specified for signature member function `%s'",
8164 /* Later, we'll make signature member functions virtual. */
8169 /* Warn about storage classes that are invalid for certain
8170 kinds of declarations (parameters, typenames, etc.). */
8173 error ("multiple storage classes in declaration of `%s'", name);
8174 else if (decl_context != NORMAL && nclasses > 0)
8176 if ((decl_context == PARM || decl_context == CATCHPARM)
8177 && (RIDBIT_SETP (RID_REGISTER, specbits)
8178 || RIDBIT_SETP (RID_AUTO, specbits)))
8180 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8182 else if (decl_context == FIELD
8183 && ! IS_SIGNATURE (current_class_type)
8184 /* C++ allows static class elements */
8185 && RIDBIT_SETP (RID_STATIC, specbits))
8186 /* C++ also allows inlines and signed and unsigned elements,
8187 but in those cases we don't come in here. */
8191 if (decl_context == FIELD)
8193 tree tmp = NULL_TREE;
8194 register int op = 0;
8198 /* Avoid trying to get an operand off an identifier node. */
8199 if (TREE_CODE (declarator) == IDENTIFIER_NODE)
8202 tmp = TREE_OPERAND (declarator, 0);
8203 op = IDENTIFIER_OPNAME_P (tmp);
8205 error ("storage class specified for %s `%s'",
8206 IS_SIGNATURE (current_class_type)
8208 ? "signature member operator"
8209 : "signature member function")
8210 : (op ? "member operator" : "field"),
8211 op ? operator_name_string (tmp) : name);
8214 error (((decl_context == PARM || decl_context == CATCHPARM)
8215 ? "storage class specified for parameter `%s'"
8216 : "storage class specified for typename"), name);
8217 RIDBIT_RESET (RID_REGISTER, specbits);
8218 RIDBIT_RESET (RID_AUTO, specbits);
8219 RIDBIT_RESET (RID_EXTERN, specbits);
8221 if (decl_context == FIELD && IS_SIGNATURE (current_class_type))
8223 RIDBIT_RESET (RID_STATIC, specbits);
8228 else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag)
8230 if (toplevel_bindings_p ())
8232 /* It's common practice (and completely valid) to have a const
8233 be initialized and declared extern. */
8235 warning ("`%s' initialized and declared `extern'", name);
8238 error ("`%s' has both `extern' and initializer", name);
8240 else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag
8241 && ! toplevel_bindings_p ())
8242 error ("nested function `%s' declared `extern'", name);
8243 else if (toplevel_bindings_p ())
8245 if (RIDBIT_SETP (RID_AUTO, specbits))
8246 error ("top-level declaration of `%s' specifies `auto'", name);
8249 if (nclasses > 0 && friendp)
8250 error ("storage class specifiers invalid in friend function declarations");
8252 /* Now figure out the structure of the declarator proper.
8253 Descend through it, creating more complex types, until we reach
8254 the declared identifier (or NULL_TREE, in an absolute declarator). */
8256 while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE)
8258 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
8259 an INDIRECT_REF (for *...),
8260 a CALL_EXPR (for ...(...)),
8261 an identifier (for the name being declared)
8262 or a null pointer (for the place in an absolute declarator
8263 where the name was omitted).
8264 For the last two cases, we have just exited the loop.
8266 For C++ it could also be
8267 a SCOPE_REF (for class :: ...). In this case, we have converted
8268 sensible names to types, and those are the values we use to
8269 qualify the member name.
8270 an ADDR_EXPR (for &...),
8271 a BIT_NOT_EXPR (for destructors)
8273 At this point, TYPE is the type of elements of an array,
8274 or for a function to return, or for a pointer to point to.
8275 After this sequence of ifs, TYPE is the type of the
8276 array or function or pointer, and DECLARATOR has had its
8277 outermost layer removed. */
8279 if (TREE_CODE (type) == ERROR_MARK)
8281 if (TREE_CODE (declarator) == SCOPE_REF)
8282 declarator = TREE_OPERAND (declarator, 1);
8284 declarator = TREE_OPERAND (declarator, 0);
8287 if (quals != NULL_TREE
8288 && (declarator == NULL_TREE
8289 || TREE_CODE (declarator) != SCOPE_REF))
8291 if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE)
8292 ctype = TYPE_METHOD_BASETYPE (type);
8293 if (ctype != NULL_TREE)
8295 tree dummy = build_decl (TYPE_DECL, NULL_TREE, type);
8296 ctype = grok_method_quals (ctype, dummy, quals);
8297 type = TREE_TYPE (dummy);
8301 switch (TREE_CODE (declarator))
8305 register tree itype = NULL_TREE;
8306 register tree size = TREE_OPERAND (declarator, 1);
8307 /* The index is a signed object `sizetype' bits wide. */
8308 tree index_type = signed_type (sizetype);
8310 declarator = TREE_OPERAND (declarator, 0);
8312 /* Check for some types that there cannot be arrays of. */
8314 if (TYPE_MAIN_VARIANT (type) == void_type_node)
8316 cp_error ("declaration of `%D' as array of voids", dname);
8317 type = error_mark_node;
8320 if (TREE_CODE (type) == FUNCTION_TYPE)
8322 cp_error ("declaration of `%D' as array of functions", dname);
8323 type = error_mark_node;
8326 /* ARM $8.4.3: Since you can't have a pointer to a reference,
8327 you can't have arrays of references. If we allowed them,
8328 then we'd be saying x[i] is valid for an array x, but
8329 then you'd have to ask: what does `*(x + i)' mean? */
8330 if (TREE_CODE (type) == REFERENCE_TYPE)
8332 if (decl_context == TYPENAME)
8333 cp_error ("cannot make arrays of references");
8335 cp_error ("declaration of `%D' as array of references",
8337 type = error_mark_node;
8340 if (TREE_CODE (type) == OFFSET_TYPE)
8342 cp_error ("declaration of `%D' as array of data members",
8344 type = error_mark_node;
8347 if (TREE_CODE (type) == METHOD_TYPE)
8349 cp_error ("declaration of `%D' as array of function members",
8351 type = error_mark_node;
8354 if (size == error_mark_node)
8355 type = error_mark_node;
8357 if (type == error_mark_node)
8362 /* Must suspend_momentary here because the index
8363 type may need to live until the end of the function.
8364 For example, it is used in the declaration of a
8365 variable which requires destructing at the end of
8366 the function; then build_vec_delete will need this
8368 int yes = suspend_momentary ();
8369 /* might be a cast */
8370 if (TREE_CODE (size) == NOP_EXPR
8371 && TREE_TYPE (size) == TREE_TYPE (TREE_OPERAND (size, 0)))
8372 size = TREE_OPERAND (size, 0);
8374 /* If this involves a template parameter, it'll be
8375 constant, but we don't know what the value is yet. */
8376 if (processing_template_decl)
8378 itype = make_node (INTEGER_TYPE);
8379 TYPE_MIN_VALUE (itype) = size_zero_node;
8380 TYPE_MAX_VALUE (itype) = build_min
8381 (MINUS_EXPR, sizetype, size, integer_one_node);
8382 goto dont_grok_size;
8385 if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE
8386 && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE)
8388 cp_error ("size of array `%D' has non-integer type",
8390 size = integer_one_node;
8392 if (TREE_READONLY_DECL_P (size))
8393 size = decl_constant_value (size);
8394 if (pedantic && integer_zerop (size))
8395 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname);
8396 if (TREE_CONSTANT (size))
8398 int old_flag_pedantic_errors = flag_pedantic_errors;
8399 int old_pedantic = pedantic;
8400 pedantic = flag_pedantic_errors = 1;
8401 /* Always give overflow errors on array subscripts. */
8402 constant_expression_warning (size);
8403 pedantic = old_pedantic;
8404 flag_pedantic_errors = old_flag_pedantic_errors;
8405 if (INT_CST_LT (size, integer_zero_node))
8407 cp_error ("size of array `%D' is negative", dname);
8408 size = integer_one_node;
8416 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
8419 cp_pedwarn ("ANSI C++ forbids variable-size array");
8424 fold (build_binary_op (MINUS_EXPR,
8425 convert (index_type, size),
8426 convert (index_type,
8427 integer_one_node), 1));
8428 if (! TREE_CONSTANT (itype))
8429 itype = variable_size (itype);
8430 else if (TREE_OVERFLOW (itype))
8432 error ("overflow in array dimension");
8433 TREE_OVERFLOW (itype) = 0;
8436 /* If we're a parm, we need to have a permanent type so
8437 mangling checks for re-use will work right. If both the
8438 element and index types are permanent, the array type
8440 if (decl_context == PARM
8441 && allocation_temporary_p () && TREE_PERMANENT (type))
8443 push_obstacks (&permanent_obstack, &permanent_obstack);
8444 itype = build_index_type (itype);
8448 itype = build_index_type (itype);
8451 resume_momentary (yes);
8454 /* Build the array type itself, then merge any constancy or
8455 volatility into the target type. We must do it in this order
8456 to ensure that the TYPE_MAIN_VARIANT field of the array type
8457 is set correctly. */
8459 type = build_cplus_array_type (type, itype);
8460 if (constp || volatilep)
8461 type = cp_build_type_variant (type, constp, volatilep);
8471 tree inner_parms = TREE_OPERAND (declarator, 1);
8472 tree inner_decl = TREE_OPERAND (declarator, 0);
8474 /* Declaring a function type.
8475 Make sure we have a valid type for the function to return. */
8477 /* Is this an error? Should they be merged into TYPE here? */
8478 if (pedantic && (constp || volatilep))
8479 pedwarn ("function declared to return const or volatile result");
8481 /* Merge any constancy or volatility into the function return
8484 if (constp || volatilep)
8486 type = cp_build_type_variant (type, constp, volatilep);
8487 if (IS_AGGR_TYPE (type))
8488 build_pointer_type (type);
8494 /* Warn about some types functions can't return. */
8496 if (TREE_CODE (type) == FUNCTION_TYPE)
8498 error ("`%s' declared as function returning a function", name);
8499 type = integer_type_node;
8501 if (TREE_CODE (type) == ARRAY_TYPE)
8503 error ("`%s' declared as function returning an array", name);
8504 type = integer_type_node;
8507 if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF)
8508 inner_decl = TREE_OPERAND (inner_decl, 1);
8510 /* Pick up type qualifiers which should be applied to `this'. */
8511 quals = TREE_OPERAND (declarator, 2);
8513 /* Pick up the exception specifications. */
8514 raises = TREE_TYPE (declarator);
8516 /* Say it's a definition only for the CALL_EXPR
8517 closest to the identifier. */
8519 inner_decl && (TREE_CODE (inner_decl) == IDENTIFIER_NODE
8520 || TREE_CODE (inner_decl) == BIT_NOT_EXPR);
8522 if (ctype == NULL_TREE
8523 && decl_context == FIELD
8525 && (friendp == 0 || dname == current_class_name))
8526 ctype = current_class_type;
8528 if (ctype && return_type == return_conversion)
8529 TYPE_HAS_CONVERSION (ctype) = 1;
8530 if (ctype && constructor_name (ctype) == dname)
8532 /* We are within a class's scope. If our declarator name
8533 is the same as the class name, and we are defining
8534 a function, then it is a constructor/destructor, and
8535 therefore returns a void type. */
8537 if (flags == DTOR_FLAG)
8539 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
8540 not be declared const or volatile. A destructor
8541 may not be static. */
8543 error ("destructor cannot be static member function");
8546 error ("destructors cannot be declared `const' or `volatile'");
8547 return void_type_node;
8549 if (decl_context == FIELD)
8551 if (! member_function_or_else (ctype, current_class_type,
8552 "destructor for alien class `%s' cannot be a member"))
8553 return void_type_node;
8556 else /* it's a constructor. */
8560 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
8561 not be declared const or volatile. A constructor may
8562 not be virtual. A constructor may not be static. */
8564 error ("constructor cannot be static member function");
8567 pedwarn ("constructors cannot be declared virtual");
8572 error ("constructors cannot be declared `const' or `volatile'");
8573 return void_type_node;
8576 RID_BIT_TYPE tmp_bits;
8577 bcopy ((void*)&specbits, (void*)&tmp_bits, sizeof (RID_BIT_TYPE));
8578 RIDBIT_RESET (RID_INLINE, tmp_bits);
8579 RIDBIT_RESET (RID_STATIC, tmp_bits);
8580 if (RIDBIT_ANY_SET (tmp_bits))
8581 error ("return value type specifier for constructor ignored");
8583 type = build_pointer_type (ctype);
8584 if (decl_context == FIELD &&
8585 IS_SIGNATURE (current_class_type))
8587 error ("constructor not allowed in signature");
8588 return void_type_node;
8590 else if (decl_context == FIELD)
8592 if (! member_function_or_else (ctype, current_class_type,
8593 "constructor for alien class `%s' cannot be member"))
8594 return void_type_node;
8595 TYPE_HAS_CONSTRUCTOR (ctype) = 1;
8596 if (return_type != return_ctor)
8600 if (decl_context == FIELD)
8606 error ("can't initialize friend function `%s'", name);
8609 /* Cannot be both friend and virtual. */
8610 error ("virtual functions cannot be friends");
8611 RIDBIT_RESET (RID_FRIEND, specbits);
8614 if (decl_context == NORMAL)
8615 error ("friend declaration not in class definition");
8616 if (current_function_decl && funcdef_flag)
8617 cp_error ("can't define friend function `%s' in a local class definition",
8621 /* Construct the function type and go to the next
8622 inner layer of declarator. */
8624 declarator = TREE_OPERAND (declarator, 0);
8626 /* FIXME: This is where default args should be fully
8629 arg_types = grokparms (inner_parms, funcdecl_p ? funcdef_flag : 0);
8633 /* Get past destructors, etc.
8634 We know we have one because FLAGS will be non-zero.
8636 Complain about improper parameter lists here. */
8637 if (TREE_CODE (declarator) == BIT_NOT_EXPR)
8639 declarator = TREE_OPERAND (declarator, 0);
8641 if (strict_prototype == 0 && arg_types == NULL_TREE)
8642 arg_types = void_list_node;
8643 else if (arg_types == NULL_TREE
8644 || arg_types != void_list_node)
8646 error ("destructors cannot be specified with parameters");
8647 arg_types = void_list_node;
8652 /* ANSI says that `const int foo ();'
8653 does not make the function foo const. */
8654 type = build_function_type (type, arg_types);
8660 /* Filter out pointers-to-references and references-to-references.
8661 We can get these if a TYPE_DECL is used. */
8663 if (TREE_CODE (type) == REFERENCE_TYPE)
8665 error ("cannot declare %s to references",
8666 TREE_CODE (declarator) == ADDR_EXPR
8667 ? "references" : "pointers");
8668 declarator = TREE_OPERAND (declarator, 0);
8672 if (TREE_CODE (type) == OFFSET_TYPE
8673 && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE
8674 || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE))
8676 cp_error ("cannot declare pointer to `%#T' member",
8678 type = TREE_TYPE (type);
8681 /* Merge any constancy or volatility into the target type
8684 if (constp || volatilep)
8686 /* A const or volatile signature pointer/reference is
8687 pointing to a const or volatile object, i.e., the
8688 `optr' is const or volatile, respectively, not the
8689 signature pointer/reference itself. */
8690 if (! IS_SIGNATURE (type))
8692 type = cp_build_type_variant (type, constp, volatilep);
8693 if (IS_AGGR_TYPE (type))
8694 build_pointer_type (type);
8700 if (IS_SIGNATURE (type))
8702 if (TREE_CODE (declarator) == ADDR_EXPR)
8704 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
8705 && TYPE_SIZE (type))
8706 cp_warning ("empty signature `%T' used in signature reference declaration",
8709 type = build_signature_reference_type (type,
8712 sorry ("signature reference");
8718 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
8719 && TYPE_SIZE (type))
8720 cp_warning ("empty signature `%T' used in signature pointer declaration",
8722 type = build_signature_pointer_type (type,
8728 else if (TREE_CODE (declarator) == ADDR_EXPR)
8730 if (TREE_CODE (type) == FUNCTION_TYPE)
8732 error ("cannot declare references to functions; use pointer to function instead");
8733 type = build_pointer_type (type);
8737 if (TYPE_MAIN_VARIANT (type) == void_type_node)
8738 error ("invalid type: `void &'");
8740 type = build_reference_type (type);
8743 else if (TREE_CODE (type) == METHOD_TYPE)
8745 type = build_ptrmemfunc_type (build_pointer_type (type));
8748 type = build_pointer_type (type);
8750 /* Process a list of type modifier keywords (such as
8751 const or volatile) that were given inside the `*' or `&'. */
8753 if (TREE_TYPE (declarator))
8755 register tree typemodlist;
8757 for (typemodlist = TREE_TYPE (declarator); typemodlist;
8758 typemodlist = TREE_CHAIN (typemodlist))
8760 if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_CONST])
8762 else if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_VOLATILE])
8767 error ("invalid type modifier within %s declarator",
8768 TREE_CODE (declarator) == ADDR_EXPR
8769 ? "reference" : "pointer");
8773 pedwarn ("duplicate `const'");
8775 pedwarn ("duplicate `volatile'");
8776 if (TREE_CODE (declarator) == ADDR_EXPR
8777 && (constp || volatilep))
8780 pedwarn ("discarding `const' applied to a reference");
8782 pedwarn ("discarding `volatile' applied to a reference");
8783 constp = volatilep = 0;
8786 declarator = TREE_OPERAND (declarator, 0);
8792 /* We have converted type names to NULL_TREE if the
8793 name was bogus, or to a _TYPE node, if not.
8795 The variable CTYPE holds the type we will ultimately
8796 resolve to. The code here just needs to build
8797 up appropriate member types. */
8798 tree sname = TREE_OPERAND (declarator, 1);
8799 /* Destructors can have their visibilities changed as well. */
8800 if (TREE_CODE (sname) == BIT_NOT_EXPR)
8801 sname = TREE_OPERAND (sname, 0);
8803 if (TREE_COMPLEXITY (declarator) == 0)
8804 /* This needs to be here, in case we are called
8805 multiple times. */ ;
8806 else if (friendp && (TREE_COMPLEXITY (declarator) < 2))
8807 /* don't fall out into global scope. Hides real bug? --eichin */ ;
8808 else if (! IS_AGGR_TYPE_CODE
8809 (TREE_CODE (TREE_OPERAND (declarator, 0))))
8811 else if (TREE_COMPLEXITY (declarator) == current_class_depth)
8813 /* This pop_nested_class corresponds to the
8814 push_nested_class used to push into class scope for
8815 parsing the argument list of a function decl, in
8817 pop_nested_class (1);
8818 TREE_COMPLEXITY (declarator) = current_class_depth;
8821 my_friendly_abort (16);
8823 if (TREE_OPERAND (declarator, 0) == NULL_TREE)
8825 /* We had a reference to a global decl, or
8826 perhaps we were given a non-aggregate typedef,
8827 in which case we cleared this out, and should just
8828 keep going as though it wasn't there. */
8832 ctype = TREE_OPERAND (declarator, 0);
8834 if (TREE_CODE (ctype) == TYPENAME_TYPE
8835 && TYPE_CONTEXT (ctype) == current_class_type)
8837 /* Members of the current class get resolved immediately;
8838 we couldn't catch this one earlier because we hadn't
8839 pushed into the class yet. */
8840 if (TREE_TYPE (ctype))
8841 ctype = TREE_TYPE (ctype);
8843 ctype = make_typename_type (TYPE_CONTEXT (ctype),
8844 TYPE_IDENTIFIER (ctype));
8847 if (sname == NULL_TREE)
8850 if (TREE_CODE (sname) == IDENTIFIER_NODE)
8852 /* This is the `standard' use of the scoping operator:
8853 basetype :: member . */
8855 if (ctype == current_class_type)
8861 Is this ill-formed? */
8864 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
8867 else if (TREE_CODE (type) == FUNCTION_TYPE)
8869 if (current_class_type == NULL_TREE
8871 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
8872 TREE_TYPE (type), TYPE_ARG_TYPES (type));
8875 cp_error ("cannot declare member function `%T::%s' within `%T'",
8876 ctype, name, current_class_type);
8877 return void_type_node;
8880 else if (RIDBIT_SETP (RID_TYPEDEF, specbits)
8881 || TYPE_SIZE (complete_type (ctype)) != NULL_TREE)
8883 /* have to move this code elsewhere in this function.
8884 this code is used for i.e., typedef int A::M; M *pm;
8886 It is? How? jason 10/2/94 */
8888 if (current_class_type)
8890 cp_error ("cannot declare member `%T::%s' within `%T'",
8891 ctype, name, current_class_type);
8892 return void_type_node;
8894 type = build_offset_type (ctype, type);
8896 else if (uses_template_parms (ctype))
8898 if (TREE_CODE (type) == FUNCTION_TYPE)
8900 build_cplus_method_type (build_type_variant (ctype,
8904 TYPE_ARG_TYPES (type));
8908 cp_error ("structure `%T' not yet defined", ctype);
8909 return error_mark_node;
8914 else if (TREE_CODE (sname) == SCOPE_REF)
8915 my_friendly_abort (17);
8919 declarator = TREE_OPERAND (declarator, 1);
8920 if (declarator && TREE_CODE (declarator) == CALL_EXPR)
8921 /* In this case, we will deal with it later. */
8925 if (TREE_CODE (type) == FUNCTION_TYPE)
8926 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), TREE_TYPE (type), TYPE_ARG_TYPES (type));
8928 type = build_offset_type (ctype, type);
8935 declarator = TREE_OPERAND (declarator, 0);
8941 declarator = NULL_TREE;
8945 declarator = NULL_TREE;
8949 my_friendly_abort (158);
8955 error ("only constructors can be declared `explicit'");
8959 /* Now TYPE has the actual type. */
8961 /* If this is declaring a typedef name, return a TYPE_DECL. */
8963 if (RIDBIT_SETP (RID_MUTABLE, specbits))
8967 error ("const `%s' cannot be declared `mutable'", name);
8968 RIDBIT_RESET (RID_MUTABLE, specbits);
8972 error ("static `%s' cannot be declared `mutable'", name);
8973 RIDBIT_RESET (RID_MUTABLE, specbits);
8977 if (RIDBIT_SETP (RID_TYPEDEF, specbits) && decl_context != TYPENAME)
8981 /* Note that the grammar rejects storage classes
8982 in typenames, fields or parameters. */
8983 if (constp || volatilep)
8984 type = cp_build_type_variant (type, constp, volatilep);
8986 /* If the user declares "struct {...} foo" then `foo' will have
8987 an anonymous name. Fill that name in now. Nothing can
8988 refer to it, so nothing needs know about the name change.
8989 The TYPE_NAME field was filled in by build_struct_xref. */
8990 if (type != error_mark_node
8992 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
8993 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type)))
8995 /* replace the anonymous name with the real name everywhere. */
8996 lookup_tag_reverse (type, declarator);
8997 TYPE_IDENTIFIER (type) = declarator;
8999 if (TYPE_LANG_SPECIFIC (type))
9000 TYPE_WAS_ANONYMOUS (type) = 1;
9003 tree d = TYPE_NAME (type), c = DECL_CONTEXT (d);
9005 DECL_ASSEMBLER_NAME (d) = DECL_NAME (d);
9006 DECL_ASSEMBLER_NAME (d)
9007 = get_identifier (build_overload_name (type, 1, 1));
9011 if (decl_context == FIELD)
9013 if (declarator == current_class_name)
9014 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
9016 decl = build_lang_decl (TYPE_DECL, declarator, type);
9017 if (IS_SIGNATURE (current_class_type) && opaque_typedef)
9018 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type) = 1;
9021 decl = build_decl (TYPE_DECL, declarator, type);
9023 if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE)
9025 cp_error_at ("typedef name may not be class-qualified", decl);
9030 if (ctype == NULL_TREE)
9032 if (TREE_CODE (type) != METHOD_TYPE)
9033 cp_error_at ("invalid type qualifier for non-method type", decl);
9035 ctype = TYPE_METHOD_BASETYPE (type);
9037 if (ctype != NULL_TREE)
9038 grok_method_quals (ctype, decl, quals);
9041 if (RIDBIT_SETP (RID_SIGNED, specbits)
9042 || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
9043 C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
9045 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9047 error ("non-object member `%s' cannot be declared mutable", name);
9050 bad_specifiers (decl, "type", virtualp, quals != NULL_TREE,
9051 inlinep, friendp, raises != NULL_TREE);
9054 error ("typedef declaration includes an initializer");
9059 /* Detect the case of an array type of unspecified size
9060 which came, as such, direct from a typedef name.
9061 We must copy the type, so that each identifier gets
9062 a distinct type, so that each identifier's size can be
9063 controlled separately by its own initializer. */
9065 if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE
9066 && TYPE_DOMAIN (type) == NULL_TREE)
9068 type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type));
9071 /* If this is a type name (such as, in a cast or sizeof),
9072 compute the type and return it now. */
9074 if (decl_context == TYPENAME)
9076 /* Note that the grammar rejects storage classes
9077 in typenames, fields or parameters. */
9078 if (constp || volatilep)
9079 if (IS_SIGNATURE (type))
9080 error ("`const' or `volatile' specified with signature type");
9082 type = cp_build_type_variant (type, constp, volatilep);
9084 /* Special case: "friend class foo" looks like a TYPENAME context. */
9089 cp_error ("`volatile' specified for friend class declaration");
9094 cp_error ("`inline' specified for friend class declaration");
9098 /* Only try to do this stuff if we didn't already give up. */
9099 if (type != integer_type_node)
9101 /* A friendly class? */
9102 if (current_class_type)
9103 make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type));
9105 error ("trying to make class `%s' a friend of global scope",
9106 TYPE_NAME_STRING (type));
9107 type = void_type_node;
9112 tree dummy = build_decl (TYPE_DECL, declarator, type);
9113 if (ctype == NULL_TREE)
9115 my_friendly_assert (TREE_CODE (type) == METHOD_TYPE, 159);
9116 ctype = TYPE_METHOD_BASETYPE (type);
9118 grok_method_quals (ctype, dummy, quals);
9119 type = TREE_TYPE (dummy);
9124 else if (declarator == NULL_TREE && decl_context != PARM
9125 && decl_context != CATCHPARM
9126 && TREE_CODE (type) != UNION_TYPE
9129 cp_error ("abstract declarator `%T' used as declaration", type);
9130 declarator = make_anon_name ();
9133 /* `void' at top level (not within pointer)
9134 is allowed only in typedefs or type names.
9135 We don't complain about parms either, but that is because
9136 a better error message can be made later. */
9138 if (TYPE_MAIN_VARIANT (type) == void_type_node && decl_context != PARM)
9141 error ("unnamed variable or field declared void");
9142 else if (TREE_CODE (declarator) == IDENTIFIER_NODE)
9144 if (IDENTIFIER_OPNAME_P (declarator))
9145 my_friendly_abort (356);
9147 error ("variable or field `%s' declared void", name);
9150 error ("variable or field declared void");
9151 type = integer_type_node;
9154 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
9155 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
9160 if (decl_context == PARM)
9163 error ("cannot use `::' in parameter declaration");
9165 /* A parameter declared as an array of T is really a pointer to T.
9166 One declared as a function is really a pointer to a function.
9167 One declared as a member is really a pointer to member. */
9169 if (TREE_CODE (type) == ARRAY_TYPE)
9171 /* Transfer const-ness of array into that of type pointed to. */
9172 type = build_pointer_type
9173 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
9174 volatilep = constp = 0;
9176 else if (TREE_CODE (type) == FUNCTION_TYPE)
9177 type = build_pointer_type (type);
9178 else if (TREE_CODE (type) == OFFSET_TYPE)
9179 type = build_pointer_type (type);
9180 else if (type == void_type_node && declarator)
9182 error ("declaration of `%s' as void", name);
9186 decl = build_decl (PARM_DECL, declarator, complete_type (type));
9188 bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE,
9189 inlinep, friendp, raises != NULL_TREE);
9190 if (current_class_type
9191 && IS_SIGNATURE (current_class_type))
9194 error ("parameter of signature member function declared `inline'");
9195 if (RIDBIT_SETP (RID_AUTO, specbits))
9196 error ("parameter of signature member function declared `auto'");
9197 if (RIDBIT_SETP (RID_REGISTER, specbits))
9198 error ("parameter of signature member function declared `register'");
9201 /* Compute the type actually passed in the parmlist,
9202 for the case where there is no prototype.
9203 (For example, shorts and chars are passed as ints.)
9204 When there is a prototype, this is overridden later. */
9206 DECL_ARG_TYPE (decl) = type_promotes_to (type);
9208 else if (decl_context == FIELD)
9210 if (type == error_mark_node)
9212 /* Happens when declaring arrays of sizes which
9213 are error_mark_node, for example. */
9216 else if (TREE_CODE (type) == FUNCTION_TYPE)
9220 /* We catch the others as conflicts with the builtin
9222 if (friendp && declarator == ridpointers[(int) RID_SIGNED])
9224 cp_error ("function `%D' cannot be declared friend",
9231 if (ctype == NULL_TREE)
9232 ctype = current_class_type;
9234 if (ctype == NULL_TREE)
9236 cp_error ("can't make `%D' into a method -- not in a class",
9238 return void_type_node;
9241 /* ``A union may [ ... ] not [ have ] virtual functions.''
9243 if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
9245 cp_error ("function `%D' declared virtual inside a union",
9247 return void_type_node;
9250 if (declarator == ansi_opname[(int) NEW_EXPR]
9251 || declarator == ansi_opname[(int) VEC_NEW_EXPR]
9252 || declarator == ansi_opname[(int) DELETE_EXPR]
9253 || declarator == ansi_opname[(int) VEC_DELETE_EXPR])
9257 cp_error ("`%D' cannot be declared virtual, since it is always static",
9262 else if (staticp < 2)
9263 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9264 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9267 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
9268 publicp = (! friendp
9269 || RIDBIT_SETP (RID_EXTERN, specbits)
9270 || ! (funcdef_flag < 0 || inlinep));
9271 decl = grokfndecl (ctype, type, declarator,
9272 virtualp, flags, quals, raises, attrlist,
9273 friendp ? -1 : 0, publicp, inlinep,
9275 if (decl == NULL_TREE)
9278 /* This clobbers the attrs stored in `decl' from `attrlist'. */
9279 /* The decl and setting of decl_machine_attr is also turned off. */
9280 decl = build_decl_attribute_variant (decl, decl_machine_attr);
9284 DECL_NONCONVERTING_P (decl) = 1;
9286 else if (TREE_CODE (type) == METHOD_TYPE)
9288 /* We only get here for friend declarations of
9289 members of other classes. */
9290 /* All method decls are public, so tell grokfndecl to set
9291 TREE_PUBLIC, also. */
9292 decl = grokfndecl (ctype, type, declarator,
9293 virtualp, flags, quals, raises, attrlist,
9294 friendp ? -1 : 0, 1, 0, funcdef_flag);
9295 if (decl == NULL_TREE)
9298 else if (!staticp && ! processing_template_decl
9299 && TYPE_SIZE (complete_type (type)) == NULL_TREE
9300 && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
9303 cp_error ("field `%D' has incomplete type", declarator);
9305 cp_error ("name `%T' has incomplete type", type);
9307 /* If we're instantiating a template, tell them which
9308 instantiation made the field's type be incomplete. */
9309 if (current_class_type
9310 && TYPE_NAME (current_class_type)
9311 && IDENTIFIER_TEMPLATE (DECL_NAME (TYPE_NAME (current_class_type)))
9312 && declspecs && TREE_VALUE (declspecs)
9313 && TREE_TYPE (TREE_VALUE (declspecs)) == type)
9314 cp_error (" in instantiation of template `%T'",
9315 current_class_type);
9317 type = error_mark_node;
9324 error ("`%s' is neither function nor method; cannot be declared friend",
9325 IDENTIFIER_POINTER (declarator));
9333 /* Friends are treated specially. */
9334 if (ctype == current_class_type)
9335 warning ("member functions are implicitly friends of their class");
9339 if (decl && DECL_NAME (decl))
9340 t = do_friend (ctype, declarator, decl,
9341 last_function_parms, flags, quals,
9343 if (t && funcdef_flag)
9346 return void_type_node;
9350 /* Structure field. It may not be a function, except for C++ */
9352 if (decl == NULL_TREE)
9356 /* Motion 10 at San Diego: If a static const integral data
9357 member is initialized with an integral constant
9358 expression, the initializer may appear either in the
9359 declaration (within the class), or in the definition,
9360 but not both. If it appears in the class, the member is
9361 a member constant. The file-scope definition is always
9368 cp_pedwarn ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
9371 else if (! INTEGRAL_TYPE_P (type))
9372 cp_pedwarn ("ANSI C++ forbids member constant `%D' of non-integral type `%T'", declarator, type);
9376 /* Note that initialization of const members is prohibited
9377 by the draft ANSI standard, though it appears to be in
9378 common practice. 12.6.2: The argument list is used to
9379 initialize the named nonstatic member.... This (or an
9380 initializer list) is the only way to initialize
9381 nonstatic const and reference members. */
9382 else if (pedantic || ! constp)
9383 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
9384 constp ? "const member" : "member", declarator);
9387 if (staticp || (constp && initialized))
9389 /* ANSI C++ Apr '95 wp 9.2 */
9390 if (staticp && declarator == current_class_name)
9391 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
9394 /* C++ allows static class members.
9395 All other work for this is done by grokfield.
9396 This VAR_DECL is built by build_lang_field_decl.
9397 All other VAR_DECLs are built by build_decl. */
9398 decl = build_lang_field_decl (VAR_DECL, declarator, type);
9399 TREE_STATIC (decl) = 1;
9400 /* In class context, 'static' means public access. */
9401 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = !!staticp;
9405 decl = build_lang_field_decl (FIELD_DECL, declarator, type);
9406 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9408 DECL_MUTABLE_P (decl) = 1;
9409 RIDBIT_RESET (RID_MUTABLE, specbits);
9413 bad_specifiers (decl, "field", virtualp, quals != NULL_TREE,
9414 inlinep, friendp, raises != NULL_TREE);
9417 else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE)
9419 tree original_name = declarator;
9425 if (RIDBIT_SETP (RID_AUTO, specbits))
9426 error ("storage class `auto' invalid for function `%s'", name);
9427 else if (RIDBIT_SETP (RID_REGISTER, specbits))
9428 error ("storage class `register' invalid for function `%s'", name);
9430 /* Function declaration not at top level.
9431 Storage classes other than `extern' are not allowed
9432 and `extern' makes no difference. */
9433 if (! toplevel_bindings_p ()
9434 && (RIDBIT_SETP (RID_STATIC, specbits)
9435 || RIDBIT_SETP (RID_INLINE, specbits))
9438 if (RIDBIT_SETP (RID_STATIC, specbits))
9439 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name);
9441 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name);
9444 if (ctype == NULL_TREE)
9448 error ("virtual non-class function `%s'", name);
9452 if (current_lang_name == lang_name_cplusplus
9453 && ! processing_template_decl
9454 && ! (IDENTIFIER_LENGTH (original_name) == 4
9455 && IDENTIFIER_POINTER (original_name)[0] == 'm'
9456 && strcmp (IDENTIFIER_POINTER (original_name), "main") == 0)
9457 && ! (IDENTIFIER_LENGTH (original_name) > 10
9458 && IDENTIFIER_POINTER (original_name)[0] == '_'
9459 && IDENTIFIER_POINTER (original_name)[1] == '_'
9460 && strncmp (IDENTIFIER_POINTER (original_name)+2, "builtin_", 8) == 0))
9461 /* Plain overloading: will not be grok'd by grokclassfn. */
9462 declarator = build_decl_overload (dname, TYPE_ARG_TYPES (type), 0);
9464 else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2)
9465 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9466 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9468 /* Record presence of `static'. In C++, `inline' implies `static'. */
9469 publicp = (ctype != NULL_TREE
9470 || RIDBIT_SETP (RID_EXTERN, specbits)
9471 || (!RIDBIT_SETP (RID_STATIC, specbits)
9472 && !RIDBIT_SETP (RID_INLINE, specbits)));
9474 decl = grokfndecl (ctype, type, original_name,
9475 virtualp, flags, quals, raises, attrlist,
9477 publicp, inlinep, funcdef_flag);
9478 if (decl == NULL_TREE)
9481 if (ctype == NULL_TREE && DECL_LANGUAGE (decl) != lang_c)
9482 DECL_ASSEMBLER_NAME (decl) = current_namespace_id (declarator);
9486 int illegal_static = 0;
9488 /* Don't allow a static member function in a class, and forbid
9489 declaring main to be static. */
9490 if (TREE_CODE (type) == METHOD_TYPE)
9492 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl);
9495 else if (current_function_decl)
9497 /* FIXME need arm citation */
9498 error ("cannot declare static function inside another function");
9505 RIDBIT_RESET (RID_STATIC, specbits);
9511 /* It's a variable. */
9513 if (decl_context == CATCHPARM)
9518 error ("cannot use `::' in parameter declaration");
9521 /* A parameter declared as an array of T is really a pointer to T.
9522 One declared as a function is really a pointer to a function.
9523 One declared as a member is really a pointer to member. */
9525 if (TREE_CODE (type) == ARRAY_TYPE)
9527 /* Transfer const-ness of array into that of type
9529 type = build_pointer_type
9530 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
9531 volatilep = constp = 0;
9533 else if (TREE_CODE (type) == FUNCTION_TYPE)
9534 type = build_pointer_type (type);
9535 else if (TREE_CODE (type) == OFFSET_TYPE)
9536 type = build_pointer_type (type);
9539 /* An uninitialized decl with `extern' is a reference. */
9540 decl = grokvardecl (type, declarator, specbits, initialized, constp);
9541 bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE,
9542 inlinep, friendp, raises != NULL_TREE);
9546 DECL_CONTEXT (decl) = ctype;
9549 cp_pedwarn ("static member `%D' re-declared as static", decl);
9551 RIDBIT_RESET (RID_STATIC, specbits);
9553 if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl))
9555 cp_error ("static member `%D' declared `register'", decl);
9556 RIDBIT_RESET (RID_REGISTER, specbits);
9558 if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic)
9560 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
9562 RIDBIT_RESET (RID_EXTERN, specbits);
9567 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9569 error ("`%s' cannot be declared mutable", name);
9572 /* Record `register' declaration for warnings on &
9573 and in case doing stupid register allocation. */
9575 if (RIDBIT_SETP (RID_REGISTER, specbits))
9576 DECL_REGISTER (decl) = 1;
9578 if (RIDBIT_SETP (RID_EXTERN, specbits))
9579 DECL_THIS_EXTERN (decl) = 1;
9581 if (RIDBIT_SETP (RID_STATIC, specbits))
9582 DECL_THIS_STATIC (decl) = 1;
9584 /* Record constancy and volatility. */
9587 TREE_READONLY (decl) = TREE_CODE (type) != REFERENCE_TYPE;
9590 TREE_SIDE_EFFECTS (decl) = 1;
9591 TREE_THIS_VOLATILE (decl) = 1;
9598 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
9599 An empty exprlist is a parmlist. An exprlist which
9600 contains only identifiers at the global level
9601 is a parmlist. Otherwise, it is an exprlist. */
9604 parmlist_is_exprlist (exprs)
9607 if (exprs == NULL_TREE || TREE_PARMLIST (exprs))
9610 if (toplevel_bindings_p ())
9612 /* At the global level, if these are all identifiers,
9613 then it is a parmlist. */
9616 if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE)
9618 exprs = TREE_CHAIN (exprs);
9625 /* Subroutine of `grokparms'. In a fcn definition, arg types must
9628 C++: also subroutine of `start_function'. */
9631 require_complete_types_for_parms (parms)
9634 if (processing_template_decl)
9639 tree type = TREE_TYPE (parms);
9640 if (TYPE_SIZE (complete_type (type)) == NULL_TREE)
9642 if (DECL_NAME (parms))
9643 error ("parameter `%s' has incomplete type",
9644 IDENTIFIER_POINTER (DECL_NAME (parms)));
9646 error ("parameter has incomplete type");
9647 TREE_TYPE (parms) = error_mark_node;
9650 /* If the arg types are incomplete in a declaration,
9651 they must include undefined tags.
9652 These tags can never be defined in the scope of the declaration,
9653 so the types can never be completed,
9654 and no call can be compiled successfully. */
9655 /* This is not the right behavior for C++, but not having
9656 it is also probably wrong. */
9659 /* Now warn if is a pointer to an incomplete type. */
9660 while (TREE_CODE (type) == POINTER_TYPE
9661 || TREE_CODE (type) == REFERENCE_TYPE)
9662 type = TREE_TYPE (type);
9663 type = TYPE_MAIN_VARIANT (type);
9664 if (TYPE_SIZE (type) == NULL_TREE)
9666 if (DECL_NAME (parm) != NULL_TREE)
9667 warning ("parameter `%s' points to incomplete type",
9668 IDENTIFIER_POINTER (DECL_NAME (parm)));
9670 warning ("parameter points to incomplete type");
9674 parms = TREE_CHAIN (parms);
9678 /* Decode the list of parameter types for a function type.
9679 Given the list of things declared inside the parens,
9680 return a list of types.
9682 The list we receive can have three kinds of elements:
9683 an IDENTIFIER_NODE for names given without types,
9684 a TREE_LIST node for arguments given as typespecs or names with typespecs,
9685 or void_type_node, to mark the end of an argument list
9686 when additional arguments are not permitted (... was not used).
9688 FUNCDEF_FLAG is nonzero for a function definition, 0 for
9689 a mere declaration. A nonempty identifier-list gets an error message
9690 when FUNCDEF_FLAG is zero.
9691 If FUNCDEF_FLAG is 1, then parameter types must be complete.
9692 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
9694 If all elements of the input list contain types,
9695 we return a list of the types.
9696 If all elements contain no type (except perhaps a void_type_node
9697 at the end), we return a null list.
9698 If some have types and some do not, it is an error, and we
9701 Also set last_function_parms to either
9702 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
9703 A list of names is converted to a chain of PARM_DECLs
9704 by store_parm_decls so that ultimately it is always a chain of decls.
9706 Note that in C++, parameters can take default values. These default
9707 values are in the TREE_PURPOSE field of the TREE_LIST. It is
9708 an error to specify default values which are followed by parameters
9709 that have no default values, or an ELLIPSES. For simplicities sake,
9710 only parameters which are specified with their types can take on
9714 grokparms (first_parm, funcdef_flag)
9718 tree result = NULL_TREE;
9719 tree decls = NULL_TREE;
9721 if (first_parm != NULL_TREE
9722 && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE)
9725 pedwarn ("parameter names (without types) in function declaration");
9726 last_function_parms = first_parm;
9729 else if (first_parm != NULL_TREE
9730 && TREE_CODE (TREE_VALUE (first_parm)) != TREE_LIST
9731 && TREE_VALUE (first_parm) != void_type_node)
9732 my_friendly_abort (145);
9735 /* Types were specified. This is a list of declarators
9736 each represented as a TREE_LIST node. */
9737 register tree parm, chain;
9738 int any_init = 0, any_error = 0;
9740 if (first_parm != NULL_TREE)
9742 tree last_result = NULL_TREE;
9743 tree last_decl = NULL_TREE;
9745 for (parm = first_parm; parm != NULL_TREE; parm = chain)
9747 tree type, list_node = parm;
9748 register tree decl = TREE_VALUE (parm);
9749 tree init = TREE_PURPOSE (parm);
9751 chain = TREE_CHAIN (parm);
9752 /* @@ weak defense against parse errors. */
9753 if (decl != void_type_node && TREE_CODE (decl) != TREE_LIST)
9755 /* Give various messages as the need arises. */
9756 if (TREE_CODE (decl) == STRING_CST)
9757 cp_error ("invalid string constant `%E'", decl);
9758 else if (TREE_CODE (decl) == INTEGER_CST)
9759 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
9763 if (decl != void_type_node)
9765 decl = grokdeclarator (TREE_VALUE (decl),
9766 TREE_PURPOSE (decl),
9767 PARM, init != NULL_TREE,
9771 type = TREE_TYPE (decl);
9772 if (TYPE_MAIN_VARIANT (type) == void_type_node)
9773 decl = void_type_node;
9774 else if (TREE_CODE (type) == METHOD_TYPE)
9776 if (DECL_NAME (decl))
9777 /* Cannot use the decl here because
9778 we don't have DECL_CONTEXT set up yet. */
9779 cp_error ("parameter `%D' invalidly declared method type",
9782 error ("parameter invalidly declared method type");
9783 type = build_pointer_type (type);
9784 TREE_TYPE (decl) = type;
9786 else if (TREE_CODE (type) == OFFSET_TYPE)
9788 if (DECL_NAME (decl))
9789 cp_error ("parameter `%D' invalidly declared offset type",
9792 error ("parameter invalidly declared offset type");
9793 type = build_pointer_type (type);
9794 TREE_TYPE (decl) = type;
9796 else if (TREE_CODE (type) == RECORD_TYPE
9797 && TYPE_LANG_SPECIFIC (type)
9798 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
9800 abstract_virtuals_error (decl, type);
9801 any_error = 1; /* seems like a good idea */
9803 else if (TREE_CODE (type) == RECORD_TYPE
9804 && TYPE_LANG_SPECIFIC (type)
9805 && IS_SIGNATURE (type))
9807 signature_error (decl, type);
9808 any_error = 1; /* seems like a good idea */
9812 if (decl == void_type_node)
9814 if (result == NULL_TREE)
9816 result = void_list_node;
9817 last_result = result;
9821 TREE_CHAIN (last_result) = void_list_node;
9822 last_result = void_list_node;
9825 && (chain != void_list_node || TREE_CHAIN (chain)))
9826 error ("`void' in parameter list must be entire list");
9830 /* Since there is a prototype, args are passed in their own types. */
9831 DECL_ARG_TYPE (decl) = TREE_TYPE (decl);
9832 #ifdef PROMOTE_PROTOTYPES
9833 if ((TREE_CODE (type) == INTEGER_TYPE
9834 || TREE_CODE (type) == ENUMERAL_TYPE)
9835 && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
9836 DECL_ARG_TYPE (decl) = integer_type_node;
9843 if (TREE_CODE (init) == SAVE_EXPR)
9844 PARM_DECL_EXPR (init) = 1;
9845 else if (processing_template_decl)
9847 else if (TREE_CODE (init) == VAR_DECL
9848 || TREE_CODE (init) == PARM_DECL)
9850 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init)))
9852 /* ``Local variables may not be used in default
9853 argument expressions.'' dpANSI C++ 8.2.6 */
9854 /* If extern int i; within a function is not
9855 considered a local variable, then this code is
9857 cp_error ("local variable `%D' may not be used as a default argument", init);
9860 else if (TREE_READONLY_DECL_P (init))
9861 init = decl_constant_value (init);
9864 init = require_instantiated_type (type, init, integer_zero_node);
9865 if (! processing_template_decl
9866 && ! can_convert_arg (type, TREE_TYPE (init), init))
9867 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
9868 TREE_TYPE (init), decl);
9874 if (decls == NULL_TREE)
9881 TREE_CHAIN (last_decl) = decl;
9884 if (TREE_PERMANENT (list_node))
9886 TREE_PURPOSE (list_node) = init;
9887 TREE_VALUE (list_node) = type;
9888 TREE_CHAIN (list_node) = NULL_TREE;
9891 list_node = saveable_tree_cons (init, type, NULL_TREE);
9892 if (result == NULL_TREE)
9895 last_result = result;
9899 TREE_CHAIN (last_result) = list_node;
9900 last_result = list_node;
9904 TREE_CHAIN (last_result) = NULL_TREE;
9905 /* If there are no parameters, and the function does not end
9906 with `...', then last_decl will be NULL_TREE. */
9907 if (last_decl != NULL_TREE)
9908 TREE_CHAIN (last_decl) = NULL_TREE;
9912 last_function_parms = decls;
9914 /* In a fcn definition, arg types must be complete. */
9915 if (funcdef_flag > 0)
9916 require_complete_types_for_parms (last_function_parms);
9925 tree t = FUNCTION_ARG_CHAIN (d);
9926 if (t && TREE_CODE (TREE_VALUE (t)) == REFERENCE_TYPE
9927 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t)))
9928 == DECL_CLASS_CONTEXT (d))
9929 && (TREE_CHAIN (t) == NULL_TREE
9930 || TREE_CHAIN (t) == void_list_node
9931 || TREE_PURPOSE (TREE_CHAIN (t))))
9936 /* These memoizing functions keep track of special properties which
9937 a class may have. `grok_ctor_properties' notices whether a class
9938 has a constructor of the form X(X&), and also complains
9939 if the class has a constructor of the form X(X).
9940 `grok_op_properties' takes notice of the various forms of
9941 operator= which are defined, as well as what sorts of type conversion
9942 may apply. Both functions take a FUNCTION_DECL as an argument. */
9945 grok_ctor_properties (ctype, decl)
9948 tree parmtypes = FUNCTION_ARG_CHAIN (decl);
9949 tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node;
9951 /* When a type has virtual baseclasses, a magical first int argument is
9952 added to any ctor so we can tell if the class has been initialized
9953 yet. This could screw things up in this function, so we deliberately
9954 ignore the leading int if we're in that situation. */
9956 && TREE_VALUE (parmtypes) == integer_type_node
9957 && TYPE_USES_VIRTUAL_BASECLASSES (ctype))
9959 parmtypes = TREE_CHAIN (parmtypes);
9960 parmtype = TREE_VALUE (parmtypes);
9963 if (TREE_CODE (parmtype) == REFERENCE_TYPE
9964 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype)
9966 if (TREE_CHAIN (parmtypes) == NULL_TREE
9967 || TREE_CHAIN (parmtypes) == void_list_node
9968 || TREE_PURPOSE (TREE_CHAIN (parmtypes)))
9970 TYPE_HAS_INIT_REF (ctype) = 1;
9971 if (TYPE_READONLY (TREE_TYPE (parmtype)))
9972 TYPE_HAS_CONST_INIT_REF (ctype) = 1;
9975 TYPE_GETS_INIT_AGGR (ctype) = 1;
9977 else if (TYPE_MAIN_VARIANT (parmtype) == ctype)
9979 if (TREE_CHAIN (parmtypes) != NULL_TREE
9980 && TREE_CHAIN (parmtypes) == void_list_node)
9982 cp_error ("invalid constructor; you probably meant `%T (%T&)'",
9984 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype);
9989 TYPE_GETS_INIT_AGGR (ctype) = 1;
9991 else if (TREE_CODE (parmtype) == VOID_TYPE
9992 || TREE_PURPOSE (parmtypes) != NULL_TREE)
9993 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1;
9998 /* An operator with this name can be either unary or binary. */
10004 return (name == ansi_opname [(int) INDIRECT_REF]
10005 || name == ansi_opname [(int) ADDR_EXPR]
10006 || name == ansi_opname [(int) NEGATE_EXPR]
10007 || name == ansi_opname[(int) POSTINCREMENT_EXPR]
10008 || name == ansi_opname[(int) POSTDECREMENT_EXPR]
10009 || name == ansi_opname [(int) CONVERT_EXPR]);
10012 /* An operator with this name can only be unary. */
10018 return (name == ansi_opname [(int) TRUTH_NOT_EXPR]
10019 || name == ansi_opname [(int) BIT_NOT_EXPR]
10020 || name == ansi_opname [(int) COMPONENT_REF]
10021 || OPERATOR_TYPENAME_P (name));
10024 /* Do a little sanity-checking on how they declared their operator. */
10027 grok_op_properties (decl, virtualp, friendp)
10029 int virtualp, friendp;
10031 tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
10032 int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
10033 tree name = DECL_NAME (decl);
10035 if (current_class_type == NULL_TREE)
10040 if (name == ansi_opname[(int) MODIFY_EXPR])
10041 TYPE_HAS_ASSIGNMENT (current_class_type) = 1;
10042 else if (name == ansi_opname[(int) CALL_EXPR])
10043 TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1;
10044 else if (name == ansi_opname[(int) ARRAY_REF])
10045 TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1;
10046 else if (name == ansi_opname[(int) COMPONENT_REF]
10047 || name == ansi_opname[(int) MEMBER_REF])
10048 TYPE_OVERLOADS_ARROW (current_class_type) = 1;
10049 else if (name == ansi_opname[(int) NEW_EXPR])
10050 TYPE_GETS_NEW (current_class_type) |= 1;
10051 else if (name == ansi_opname[(int) DELETE_EXPR])
10052 TYPE_GETS_DELETE (current_class_type) |= 1;
10053 else if (name == ansi_opname[(int) VEC_NEW_EXPR])
10054 TYPE_GETS_NEW (current_class_type) |= 2;
10055 else if (name == ansi_opname[(int) VEC_DELETE_EXPR])
10056 TYPE_GETS_DELETE (current_class_type) |= 2;
10059 if (name == ansi_opname[(int) NEW_EXPR]
10060 || name == ansi_opname[(int) VEC_NEW_EXPR])
10062 /* When the compiler encounters the definition of A::operator new, it
10063 doesn't look at the class declaration to find out if it's static. */
10065 revert_static_member_fn (&decl, NULL, NULL);
10067 /* Take care of function decl if we had syntax errors. */
10068 if (argtypes == NULL_TREE)
10070 build_function_type (ptr_type_node,
10071 hash_tree_chain (integer_type_node,
10074 TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
10076 else if (name == ansi_opname[(int) DELETE_EXPR]
10077 || name == ansi_opname[(int) VEC_DELETE_EXPR])
10080 revert_static_member_fn (&decl, NULL, NULL);
10082 if (argtypes == NULL_TREE)
10084 build_function_type (void_type_node,
10085 hash_tree_chain (ptr_type_node,
10089 TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
10091 if (! friendp && name == ansi_opname[(int) VEC_DELETE_EXPR]
10092 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)))
10093 != void_list_node))
10094 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type) = 1;
10099 /* An operator function must either be a non-static member function
10100 or have at least one parameter of a class, a reference to a class,
10101 an enumeration, or a reference to an enumeration. 13.4.0.6 */
10102 if (! methodp || DECL_STATIC_FUNCTION_P (decl))
10104 if (OPERATOR_TYPENAME_P (name)
10105 || name == ansi_opname[(int) CALL_EXPR]
10106 || name == ansi_opname[(int) MODIFY_EXPR]
10107 || name == ansi_opname[(int) COMPONENT_REF]
10108 || name == ansi_opname[(int) ARRAY_REF])
10109 cp_error ("`%D' must be a nonstatic member function", decl);
10114 if (DECL_STATIC_FUNCTION_P (decl))
10115 cp_error ("`%D' must be either a non-static member function or a non-member function", decl);
10118 for (; TREE_VALUE (p) != void_type_node ; p = TREE_CHAIN (p))
10120 tree arg = TREE_VALUE (p);
10121 if (TREE_CODE (arg) == REFERENCE_TYPE)
10122 arg = TREE_TYPE (arg);
10124 /* This lets bad template code slip through. */
10125 if (IS_AGGR_TYPE (arg)
10126 || TREE_CODE (arg) == ENUMERAL_TYPE
10127 || TREE_CODE (arg) == TEMPLATE_TYPE_PARM)
10131 ("`%D' must have an argument of class or enumerated type",
10138 if (name == ansi_opname[(int) CALL_EXPR]
10139 || name == ansi_opname[(int) METHOD_CALL_EXPR])
10140 return; /* no restrictions on args */
10142 if (IDENTIFIER_TYPENAME_P (name))
10144 tree t = TREE_TYPE (name);
10145 if (TREE_CODE (t) == VOID_TYPE)
10146 pedwarn ("void is not a valid type conversion operator");
10147 else if (! friendp)
10149 int ref = (TREE_CODE (t) == REFERENCE_TYPE);
10152 t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
10154 if (t == current_class_type)
10155 what = "the same type";
10156 else if (IS_AGGR_TYPE (t)
10157 && DERIVED_FROM_P (t, current_class_type))
10158 what = "a base class";
10161 warning ("conversion to %s%s will never use a type conversion operator",
10162 ref ? "a reference to " : "", what);
10166 if (name == ansi_opname[(int) MODIFY_EXPR])
10170 if (list_length (argtypes) != 3 && methodp)
10172 cp_error ("`%D' must take exactly one argument", decl);
10175 parmtype = TREE_VALUE (TREE_CHAIN (argtypes));
10177 if (copy_assignment_arg_p (parmtype, virtualp)
10180 TYPE_HAS_ASSIGN_REF (current_class_type) = 1;
10181 if (TREE_CODE (parmtype) != REFERENCE_TYPE
10182 || TYPE_READONLY (TREE_TYPE (parmtype)))
10183 TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1;
10186 else if (name == ansi_opname[(int) COND_EXPR])
10189 pedwarn ("ANSI C++ prohibits overloading operator ?:");
10190 if (list_length (argtypes) != 4)
10191 cp_error ("`%D' must take exactly three arguments", decl);
10193 else if (ambi_op_p (name))
10195 if (list_length (argtypes) == 2)
10197 else if (list_length (argtypes) == 3)
10199 if ((name == ansi_opname[(int) POSTINCREMENT_EXPR]
10200 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
10201 && ! processing_template_decl
10202 && TREE_VALUE (TREE_CHAIN (argtypes)) != integer_type_node)
10205 cp_error ("postfix `%D' must take `int' as its argument",
10209 ("postfix `%D' must take `int' as its second argument",
10216 cp_error ("`%D' must take either zero or one argument", decl);
10218 cp_error ("`%D' must take either one or two arguments", decl);
10221 else if (unary_op_p (name))
10223 if (list_length (argtypes) != 2)
10226 cp_error ("`%D' must take `void'", decl);
10228 cp_error ("`%D' must take exactly one argument", decl);
10231 else /* if (binary_op_p (name)) */
10233 if (list_length (argtypes) != 3)
10236 cp_error ("`%D' must take exactly one argument", decl);
10238 cp_error ("`%D' must take exactly two arguments", decl);
10244 for (; argtypes != void_list_node ; argtypes = TREE_CHAIN (argtypes))
10245 if (TREE_PURPOSE (argtypes))
10247 TREE_PURPOSE (argtypes) = NULL_TREE;
10248 if (name == ansi_opname[(int) POSTINCREMENT_EXPR]
10249 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
10252 cp_pedwarn ("`%D' cannot have default arguments", decl);
10255 cp_error ("`%D' cannot have default arguments", decl);
10260 /* Get the struct, enum or union (CODE says which) with tag NAME.
10261 Define the tag as a forward-reference if it is not defined.
10263 C++: If a class derivation is given, process it here, and report
10264 an error if multiple derivation declarations are not identical.
10266 If this is a definition, come in through xref_tag and only look in
10267 the current frame for the name (since C++ allows new names in any
10271 xref_tag (code_type_node, name, binfo, globalize)
10272 tree code_type_node;
10276 enum tag_types tag_code;
10277 enum tree_code code;
10279 register tree ref, t;
10280 struct binding_level *b = inner_binding_level;
10283 tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
10288 case signature_type:
10289 code = RECORD_TYPE;
10295 code = ENUMERAL_TYPE;
10298 my_friendly_abort (18);
10301 /* If a cross reference is requested, look up the type
10302 already defined for this tag and return it. */
10303 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
10306 name = TYPE_IDENTIFIER (t);
10310 t = IDENTIFIER_TYPE_VALUE (name);
10311 if (t && TREE_CODE (t) != code && TREE_CODE (t) != TEMPLATE_TYPE_PARM)
10316 if (pedantic && t && TREE_CODE (t) == TEMPLATE_TYPE_PARM)
10318 cp_pedwarn ("redeclaration of template type-parameter `%T'", name);
10319 cp_pedwarn_at (" previously declared here", t);
10321 if (t && TYPE_CONTEXT (t) && got_type)
10325 /* If we know we are defining this tag, only look it up in
10326 this scope and don't try to find it as a type. */
10327 ref = lookup_tag (code, name, b, 1);
10335 ref = lookup_tag (code, name, b, 0);
10339 /* Try finding it as a type declaration. If that wins, use it. */
10340 ref = lookup_name (name, 1);
10341 if (ref && TREE_CODE (ref) == TYPE_DECL
10342 && TREE_CODE (TREE_TYPE (ref)) == code)
10343 ref = TREE_TYPE (ref);
10349 push_obstacks_nochange ();
10353 /* If no such tag is yet defined, create a forward-reference node
10354 and record it as the "definition".
10355 When a real declaration of this type is found,
10356 the forward-reference will be altered into a real type. */
10358 /* In C++, since these migrate into the global scope, we must
10359 build them on the permanent obstack. */
10361 temp = allocation_temporary_p ();
10363 end_temporary_allocation ();
10365 if (code == ENUMERAL_TYPE)
10367 cp_error ("use of enum `%#D' without previous declaration", name);
10369 ref = make_node (ENUMERAL_TYPE);
10371 /* Give the type a default layout like unsigned int
10372 to avoid crashing if it does not get defined. */
10373 TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node);
10374 TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node);
10375 TREE_UNSIGNED (ref) = 1;
10376 TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node);
10377 TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node);
10378 TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node);
10380 /* Enable us to recognize when a type is created in class context.
10381 To do nested classes correctly, this should probably be cleared
10382 out when we leave this classes scope. Currently this in only
10383 done in `start_enum'. */
10385 pushtag (name, ref, globalize);
10389 struct binding_level *old_b = class_binding_level;
10391 ref = make_lang_type (code);
10393 if (tag_code == signature_type)
10395 SET_SIGNATURE (ref);
10396 /* Since a signature type will be turned into the type
10397 of signature tables, it's not only an interface. */
10398 CLASSTYPE_INTERFACE_ONLY (ref) = 0;
10399 SET_CLASSTYPE_INTERFACE_KNOWN (ref);
10400 /* A signature doesn't have a vtable. */
10401 CLASSTYPE_VTABLE_NEEDS_WRITING (ref) = 0;
10404 #ifdef NONNESTED_CLASSES
10405 /* Class types don't nest the way enums do. */
10406 class_binding_level = (struct binding_level *)0;
10408 pushtag (name, ref, globalize);
10409 class_binding_level = old_b;
10414 /* If it no longer looks like a nested type, make sure it's
10415 in global scope. */
10416 if (b == global_binding_level && !class_binding_level
10417 && IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE)
10418 IDENTIFIER_GLOBAL_VALUE (name) = TYPE_NAME (ref);
10422 xref_basetypes (code_type_node, name, ref, binfo);
10426 /* Until the type is defined, tentatively accept whatever
10427 structure tag the user hands us. */
10428 if (TYPE_SIZE (ref) == NULL_TREE
10429 && ref != current_class_type
10430 /* Have to check this, in case we have contradictory tag info. */
10431 && IS_AGGR_TYPE_CODE (TREE_CODE (ref)))
10433 if (tag_code == class_type)
10434 CLASSTYPE_DECLARED_CLASS (ref) = 1;
10435 else if (tag_code == record_type || tag_code == signature_type)
10436 CLASSTYPE_DECLARED_CLASS (ref) = 0;
10445 xref_tag_from_type (old, id, globalize)
10449 tree code_type_node;
10451 if (TREE_CODE (old) == RECORD_TYPE)
10452 code_type_node = (CLASSTYPE_DECLARED_CLASS (old)
10453 ? class_type_node : record_type_node);
10455 code_type_node = union_type_node;
10457 if (id == NULL_TREE)
10458 id = TYPE_IDENTIFIER (old);
10460 return xref_tag (code_type_node, id, NULL_TREE, globalize);
10464 xref_basetypes (code_type_node, name, ref, binfo)
10465 tree code_type_node;
10469 /* In the declaration `A : X, Y, ... Z' we mark all the types
10470 (A, X, Y, ..., Z) so we can check for duplicates. */
10473 enum tag_types tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
10475 if (tag_code == union_type)
10477 cp_error ("derived union `%T' invalid", ref);
10481 len = list_length (binfo);
10482 push_obstacks (TYPE_OBSTACK (ref), TYPE_OBSTACK (ref));
10484 SET_CLASSTYPE_MARKED (ref);
10485 BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len);
10487 for (i = 0; binfo; binfo = TREE_CHAIN (binfo))
10489 /* The base of a derived struct is public by default. */
10491 = (TREE_PURPOSE (binfo) == access_public_node
10492 || TREE_PURPOSE (binfo) == access_public_virtual_node
10493 || (tag_code != class_type
10494 && (TREE_PURPOSE (binfo) == access_default_node
10495 || TREE_PURPOSE (binfo) == access_default_virtual_node)));
10496 int via_protected = TREE_PURPOSE (binfo) == access_protected_node;
10498 = (TREE_PURPOSE (binfo) == access_private_virtual_node
10499 || TREE_PURPOSE (binfo) == access_public_virtual_node
10500 || TREE_PURPOSE (binfo) == access_default_virtual_node);
10501 tree basetype = TREE_VALUE (binfo);
10504 GNU_xref_hier (IDENTIFIER_POINTER (name),
10505 IDENTIFIER_POINTER (TREE_VALUE (binfo)),
10506 via_public, via_virtual, 0);
10508 if (basetype && TREE_CODE (basetype) == TYPE_DECL)
10509 basetype = TREE_TYPE (basetype);
10511 || (TREE_CODE (basetype) != RECORD_TYPE
10512 && TREE_CODE (basetype) != TYPENAME_TYPE
10513 && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM))
10515 cp_error ("base type `%T' fails to be a struct or class type",
10516 TREE_VALUE (binfo));
10520 /* This code replaces similar code in layout_basetypes. */
10521 else if (TREE_CODE (basetype) != TEMPLATE_TYPE_PARM
10522 && TREE_CODE (basetype) != TYPENAME_TYPE
10523 && TYPE_SIZE (complete_type (basetype)) == NULL_TREE)
10525 cp_error ("base class `%T' has incomplete type", basetype);
10531 if (CLASSTYPE_MARKED (basetype))
10533 if (basetype == ref)
10534 cp_error ("recursive type `%T' undefined", basetype);
10536 cp_error ("duplicate base type `%T' invalid", basetype);
10540 /* Note that the BINFO records which describe individual
10541 inheritances are *not* shared in the lattice! They
10542 cannot be shared because a given baseclass may be
10543 inherited with different `accessibility' by different
10544 derived classes. (Each BINFO record describing an
10545 individual inheritance contains flags which say what
10546 the `accessibility' of that particular inheritance is.) */
10548 base_binfo = make_binfo (integer_zero_node, basetype,
10549 TYPE_BINFO_VTABLE (basetype),
10550 TYPE_BINFO_VIRTUALS (basetype), NULL_TREE);
10552 TREE_VEC_ELT (binfos, i) = base_binfo;
10553 TREE_VIA_PUBLIC (base_binfo) = via_public;
10554 TREE_VIA_PROTECTED (base_binfo) = via_protected;
10555 TREE_VIA_VIRTUAL (base_binfo) = via_virtual;
10556 BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref);
10558 SET_CLASSTYPE_MARKED (basetype);
10560 /* We are free to modify these bits because they are meaningless
10561 at top level, and BASETYPE is a top-level type. */
10562 if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype))
10564 TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1;
10565 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
10568 TYPE_OVERLOADS_METHOD_CALL_EXPR (ref) |= TYPE_OVERLOADS_METHOD_CALL_EXPR (basetype);
10569 TYPE_GETS_NEW (ref) |= TYPE_GETS_NEW (basetype);
10570 TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
10571 CLASSTYPE_LOCAL_TYPEDECLS (ref) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype);
10576 TREE_VEC_LENGTH (binfos) = i;
10578 BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE;
10581 TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1;
10583 TYPE_USES_MULTIPLE_INHERITANCE (ref)
10584 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos, 0)));
10585 if (TYPE_USES_MULTIPLE_INHERITANCE (ref))
10586 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
10588 /* Unmark all the types. */
10590 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i)));
10591 CLEAR_CLASSTYPE_MARKED (ref);
10597 static tree current_local_enum = NULL_TREE;
10599 /* Begin compiling the definition of an enumeration type.
10600 NAME is its name (or null if anonymous).
10601 Returns the type object, as yet incomplete.
10602 Also records info about it so that build_enumerator
10603 may be used to declare the individual values as they are read. */
10609 register tree enumtype = NULL_TREE;
10610 struct binding_level *b = inner_binding_level;
10612 /* If this is the real definition for a previous forward reference,
10613 fill in the contents in the same object that used to be the
10614 forward reference. */
10616 if (name != NULL_TREE)
10617 enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1);
10619 if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE)
10620 cp_error ("multiple definition of `%#T'", enumtype);
10623 enumtype = make_node (ENUMERAL_TYPE);
10624 pushtag (name, enumtype, 0);
10627 if (b->pseudo_global)
10628 cp_error ("template declaration of `%#T'", enumtype);
10630 if (current_class_type)
10631 TREE_ADDRESSABLE (b->tags) = 1;
10633 current_local_enum = NULL_TREE;
10635 /* We don't copy this value because build_enumerator needs to do it. */
10636 enum_next_value = integer_zero_node;
10639 GNU_xref_decl (current_function_decl, enumtype);
10643 /* After processing and defining all the values of an enumeration type,
10644 install their decls in the enumeration type and finish it off.
10645 ENUMTYPE is the type object and VALUES a list of name-value pairs.
10646 Returns ENUMTYPE. */
10649 finish_enum (enumtype, values)
10650 register tree enumtype, values;
10652 register tree minnode, maxnode;
10653 /* Calculate the maximum value of any enumerator in this type. */
10657 register tree pair;
10658 register tree value = DECL_INITIAL (TREE_VALUE (values));
10660 if (! processing_template_decl)
10662 /* Speed up the main loop by performing some precalculations */
10663 TREE_TYPE (TREE_VALUE (values)) = enumtype;
10664 TREE_TYPE (value) = enumtype;
10665 minnode = maxnode = value;
10667 TREE_VALUE (values) = value;
10669 for (pair = TREE_CHAIN (values); pair; pair = TREE_CHAIN (pair))
10671 value = DECL_INITIAL (TREE_VALUE (pair));
10672 if (! processing_template_decl)
10674 TREE_TYPE (TREE_VALUE (pair)) = enumtype;
10675 TREE_TYPE (value) = enumtype;
10676 if (tree_int_cst_lt (maxnode, value))
10678 else if (tree_int_cst_lt (value, minnode))
10681 TREE_VALUE (pair) = value;
10685 maxnode = minnode = integer_zero_node;
10687 TYPE_VALUES (enumtype) = values;
10689 if (processing_template_decl)
10693 int unsignedp = tree_int_cst_sgn (minnode) >= 0;
10694 int lowprec = min_precision (minnode, unsignedp);
10695 int highprec = min_precision (maxnode, unsignedp);
10696 int precision = MAX (lowprec, highprec);
10698 TYPE_SIZE (enumtype) = NULL_TREE;
10700 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
10702 TYPE_PRECISION (enumtype) = precision;
10704 fixup_unsigned_type (enumtype);
10706 fixup_signed_type (enumtype);
10708 if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node)))
10709 /* Use the width of the narrowest normal C type which is wide enough. */
10710 TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size
10713 TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node);
10715 TYPE_SIZE (enumtype) = 0;
10716 layout_type (enumtype);
10722 /* Fix up all variant types of this enum type. */
10723 for (tem = TYPE_MAIN_VARIANT (enumtype); tem;
10724 tem = TYPE_NEXT_VARIANT (tem))
10726 TYPE_VALUES (tem) = TYPE_VALUES (enumtype);
10727 TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype);
10728 TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype);
10729 TYPE_SIZE (tem) = TYPE_SIZE (enumtype);
10730 TYPE_MODE (tem) = TYPE_MODE (enumtype);
10731 TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype);
10732 TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype);
10733 TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype);
10737 /* Finish debugging output for this type. */
10738 rest_of_type_compilation (enumtype, global_bindings_p ());
10743 /* Build and install a CONST_DECL for one value of the
10744 current enumeration type (one that was begun with start_enum).
10745 Return a tree-list containing the name and its value.
10746 Assignment of sequential values by default is handled here. */
10749 build_enumerator (name, value)
10754 /* Remove no-op casts from the value. */
10756 STRIP_TYPE_NOPS (value);
10758 if (! processing_template_decl)
10760 /* Validate and default VALUE. */
10761 if (value != NULL_TREE)
10763 if (TREE_READONLY_DECL_P (value))
10764 value = decl_constant_value (value);
10766 if (TREE_CODE (value) == INTEGER_CST)
10768 value = default_conversion (value);
10769 constant_expression_warning (value);
10773 cp_error ("enumerator value for `%D' not integer constant", name);
10778 /* Default based on previous value. */
10779 if (value == NULL_TREE && ! processing_template_decl)
10781 value = enum_next_value;
10783 cp_error ("overflow in enumeration values at `%D'", name);
10786 /* Remove no-op casts from the value. */
10788 STRIP_TYPE_NOPS (value);
10790 /* We have to always copy here; not all INTEGER_CSTs are unshared,
10791 and there's no wedding ring. Look at size_int()...*/
10792 value = copy_node (value);
10793 TREE_TYPE (value) = integer_type_node;
10796 /* C++ associates enums with global, function, or class declarations. */
10798 decl = current_scope ();
10799 if (decl && decl == current_class_type)
10801 /* This enum declaration is local to the class, so we must put
10802 it in that class's list of decls. */
10803 decl = build_lang_field_decl (CONST_DECL, name, integer_type_node);
10804 DECL_INITIAL (decl) = value;
10805 TREE_READONLY (decl) = 1;
10806 pushdecl_class_level (decl);
10807 TREE_CHAIN (decl) = current_local_enum;
10808 current_local_enum = decl;
10812 /* It's a global enum, or it's local to a function. (Note local to
10813 a function could mean local to a class method. */
10814 decl = build_decl (CONST_DECL, name, integer_type_node);
10815 DECL_INITIAL (decl) = value;
10818 GNU_xref_decl (current_function_decl, decl);
10821 if (! processing_template_decl)
10823 /* Set basis for default for next value. */
10824 enum_next_value = build_binary_op_nodefault (PLUS_EXPR, value,
10825 integer_one_node, PLUS_EXPR);
10826 enum_overflow = tree_int_cst_lt (enum_next_value, value);
10829 result = saveable_tree_cons (name, decl, NULL_TREE);
10834 grok_enum_decls (type, decl)
10837 tree d = current_local_enum;
10839 if (d == NULL_TREE)
10844 TREE_TYPE (d) = type;
10845 if (TREE_CHAIN (d) == NULL_TREE)
10847 TREE_CHAIN (d) = decl;
10850 d = TREE_CHAIN (d);
10853 decl = current_local_enum;
10854 current_local_enum = NULL_TREE;
10859 static int function_depth;
10861 /* Create the FUNCTION_DECL for a function definition.
10862 DECLSPECS and DECLARATOR are the parts of the declaration;
10863 they describe the function's name and the type it returns,
10864 but twisted together in a fashion that parallels the syntax of C.
10866 This function creates a binding context for the function body
10867 as well as setting up the FUNCTION_DECL in current_function_decl.
10869 Returns 1 on success. If the DECLARATOR is not suitable for a function
10870 (it defines a datum instead), we return 0, which tells
10871 yyparse to report a parse error.
10873 For C++, we must first check whether that datum makes any sense.
10874 For example, "class A local_a(1,2);" means that variable local_a
10875 is an aggregate of type A, which should have a constructor
10876 applied to it with the argument list [1, 2].
10878 @@ There is currently no way to retrieve the storage
10879 @@ allocated to FUNCTION (or all of its parms) if we return
10880 @@ something we had previously. */
10883 start_function (declspecs, declarator, attrs, pre_parsed_p)
10884 tree declspecs, declarator, attrs;
10888 tree ctype = NULL_TREE;
10891 extern int have_extern_spec;
10892 extern int used_extern_spec;
10893 int doing_friend = 0;
10895 /* Sanity check. */
10896 my_friendly_assert (TREE_VALUE (void_list_node) == void_type_node, 160);
10897 my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161);
10899 /* Assume, until we see it does. */
10900 current_function_returns_value = 0;
10901 current_function_returns_null = 0;
10902 warn_about_return_type = 0;
10904 shadowed_labels = 0;
10905 current_function_assigns_this = 0;
10906 current_function_just_assigned_this = 0;
10907 current_function_parms_stored = 0;
10908 original_result_rtx = NULL_RTX;
10909 base_init_expr = NULL_TREE;
10910 current_base_init_list = NULL_TREE;
10911 current_member_init_list = NULL_TREE;
10912 ctor_label = dtor_label = NULL_TREE;
10914 clear_temp_name ();
10916 /* This should only be done once on the top most decl. */
10917 if (have_extern_spec && !used_extern_spec)
10919 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), declspecs);
10920 used_extern_spec = 1;
10925 decl1 = declarator;
10927 if (! DECL_ARGUMENTS (decl1)
10928 && !DECL_STATIC_FUNCTION_P (decl1)
10929 && DECL_CONTEXT (decl1)
10930 && DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl1)))
10931 && IDENTIFIER_TEMPLATE (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl1)))))
10933 cp_error ("redeclaration of `%#D'", decl1);
10934 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)))
10935 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)));
10936 else if (IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1)))
10937 cp_error_at ("previous declaration here", IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1)));
10940 fntype = TREE_TYPE (decl1);
10941 if (TREE_CODE (fntype) == METHOD_TYPE)
10942 ctype = TYPE_METHOD_BASETYPE (fntype);
10944 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
10945 class is in the (lexical) scope of the class in which it is
10947 if (!ctype && DECL_FRIEND_P (decl1))
10949 ctype = DECL_CLASS_CONTEXT (decl1);
10951 /* CTYPE could be null here if we're dealing with a template;
10952 for example, `inline friend float foo()' inside a template
10953 will have no CTYPE set. */
10954 if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
10960 /* In a fcn definition, arg types must be complete. */
10961 require_complete_types_for_parms (DECL_ARGUMENTS (decl1));
10963 /* In case some arg types were completed since the declaration was
10964 parsed, fix up the decls. */
10966 tree t = DECL_ARGUMENTS (decl1);
10967 for (; t; t = TREE_CHAIN (t))
10968 layout_decl (t, 0);
10971 last_function_parms = DECL_ARGUMENTS (decl1);
10972 last_function_parm_tags = NULL_TREE;
10976 decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL_TREE);
10977 /* If the declarator is not suitable for a function definition,
10978 cause a syntax error. */
10979 if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0;
10981 fntype = TREE_TYPE (decl1);
10983 restype = TREE_TYPE (fntype);
10984 if (IS_AGGR_TYPE (restype) && ! TYPE_PTRMEMFUNC_P (restype)
10985 && ! CLASSTYPE_GOT_SEMICOLON (restype))
10987 cp_error ("semicolon missing after declaration of `%#T'", restype);
10988 shadow_tag (build_tree_list (NULL_TREE, restype));
10989 CLASSTYPE_GOT_SEMICOLON (restype) = 1;
10990 if (TREE_CODE (fntype) == FUNCTION_TYPE)
10991 fntype = build_function_type (integer_type_node,
10992 TYPE_ARG_TYPES (fntype));
10994 fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)),
10996 TYPE_ARG_TYPES (fntype));
10997 TREE_TYPE (decl1) = fntype;
11000 if (TREE_CODE (fntype) == METHOD_TYPE)
11001 ctype = TYPE_METHOD_BASETYPE (fntype);
11002 else if (IDENTIFIER_LENGTH (DECL_NAME (decl1)) == 4
11003 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (decl1)), "main")
11004 && DECL_CONTEXT (decl1) == NULL_TREE)
11006 /* If this doesn't return integer_type, complain. */
11007 if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node)
11009 if (pedantic || warn_return_type)
11010 pedwarn ("return type for `main' changed to `int'");
11011 TREE_TYPE (decl1) = fntype = default_function_type;
11013 warn_about_return_type = 0;
11017 /* Warn if function was previously implicitly declared
11018 (but not if we warned then). */
11019 if (! warn_implicit
11020 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE)
11021 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)));
11023 current_function_decl = decl1;
11024 /* Save the parm names or decls from this function's declarator
11025 where store_parm_decls will find them. */
11026 current_function_parms = last_function_parms;
11027 current_function_parm_tags = last_function_parm_tags;
11029 announce_function (decl1);
11031 if (! processing_template_decl)
11033 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype))) == NULL_TREE)
11035 cp_error ("return-type `%#T' is an incomplete type",
11036 TREE_TYPE (fntype));
11038 /* Make it return void instead, but don't change the
11039 type of the DECL_RESULT, in case we have a named return value. */
11042 = build_cplus_method_type (build_type_variant (ctype,
11043 TREE_READONLY (decl1),
11044 TREE_SIDE_EFFECTS (decl1)),
11046 FUNCTION_ARG_CHAIN (decl1));
11049 = build_function_type (void_type_node,
11050 TYPE_ARG_TYPES (TREE_TYPE (decl1)));
11051 DECL_RESULT (decl1)
11052 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype)));
11053 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (TREE_TYPE (fntype));
11054 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (TREE_TYPE (fntype));
11057 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype))
11058 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype)))
11059 abstract_virtuals_error (decl1, TREE_TYPE (fntype));
11062 if (warn_about_return_type)
11063 warning ("return-type defaults to `int'");
11065 /* Make the init_value nonzero so pushdecl knows this is not tentative.
11066 error_mark_node is replaced below (in poplevel) with the BLOCK. */
11067 DECL_INITIAL (decl1) = error_mark_node;
11069 /* This function exists in static storage.
11070 (This does not mean `static' in the C sense!) */
11071 TREE_STATIC (decl1) = 1;
11073 /* Record the decl so that the function name is defined.
11074 If we already have a decl for this name, and it is a FUNCTION_DECL,
11075 use the old decl. */
11077 if (processing_template_decl)
11078 push_template_decl (decl1);
11079 else if (pre_parsed_p == 0)
11081 decl1 = pushdecl (decl1);
11082 DECL_MAIN_VARIANT (decl1) = decl1;
11083 fntype = TREE_TYPE (decl1);
11086 current_function_decl = decl1;
11088 if (DECL_INTERFACE_KNOWN (decl1))
11090 if (DECL_NOT_REALLY_EXTERN (decl1))
11091 DECL_EXTERNAL (decl1) = 0;
11093 /* If this function belongs to an interface, it is public.
11094 If it belongs to someone else's interface, it is also external.
11095 It doesn't matter whether it's inline or not. */
11096 else if (interface_unknown == 0
11097 && (! DECL_TEMPLATE_INSTANTIATION (decl1)
11098 || flag_alt_external_templates))
11100 if (DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1)
11101 || processing_template_decl)
11102 DECL_EXTERNAL (decl1)
11104 || (DECL_THIS_INLINE (decl1) && ! flag_implement_inlines));
11107 DECL_EXTERNAL (decl1) = 0;
11108 if (DECL_C_STATIC (decl1))
11109 TREE_PUBLIC (decl1) = 0;
11111 DECL_NOT_REALLY_EXTERN (decl1) = 0;
11112 DECL_INTERFACE_KNOWN (decl1) = 1;
11116 /* This is a definition, not a reference.
11117 So clear DECL_EXTERNAL. */
11118 DECL_EXTERNAL (decl1) = 0;
11120 if ((DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1))
11121 && ! DECL_INTERFACE_KNOWN (decl1)
11122 /* Don't try to defer nested functions for now. */
11123 && ! hack_decl_function_context (decl1))
11124 DECL_DEFER_OUTPUT (decl1) = 1;
11127 DECL_INTERFACE_KNOWN (decl1) = 1;
11128 if (DECL_C_STATIC (decl1))
11129 TREE_PUBLIC (decl1) = 0;
11133 if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1))
11135 if (TREE_CODE (fntype) == METHOD_TYPE)
11136 TREE_TYPE (decl1) = fntype
11137 = build_function_type (TREE_TYPE (fntype),
11138 TREE_CHAIN (TYPE_ARG_TYPES (fntype)));
11139 current_function_parms = TREE_CHAIN (current_function_parms);
11140 DECL_ARGUMENTS (decl1) = current_function_parms;
11143 restype = TREE_TYPE (fntype);
11147 push_nested_class (ctype, 1);
11149 /* If we're compiling a friend function, neither of the variables
11150 current_class_ptr nor current_class_type will have values. */
11151 if (! doing_friend)
11153 /* We know that this was set up by `grokclassfn'.
11154 We do not wait until `store_parm_decls', since evil
11155 parse errors may never get us to that point. Here
11156 we keep the consistency between `current_class_type'
11157 and `current_class_ptr'. */
11158 tree t = current_function_parms;
11160 my_friendly_assert (t != NULL_TREE
11161 && TREE_CODE (t) == PARM_DECL, 162);
11163 if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE)
11165 int i = suspend_momentary ();
11167 /* Fool build_indirect_ref. */
11168 current_class_ptr = NULL_TREE;
11169 current_class_ref = build_indirect_ref (t, NULL_PTR);
11170 current_class_ptr = t;
11171 resume_momentary (i);
11174 /* We're having a signature pointer here. */
11175 current_class_ref = current_class_ptr = t;
11181 if (DECL_STATIC_FUNCTION_P (decl1))
11182 push_nested_class (DECL_CONTEXT (decl1), 2);
11184 push_memoized_context (0, 1);
11185 current_class_ptr = current_class_ref = NULL_TREE;
11189 current_binding_level->parm_flag = 1;
11191 GNU_xref_function (decl1, current_function_parms);
11194 cplus_decl_attributes (decl1, NULL_TREE, attrs);
11195 make_function_rtl (decl1);
11197 /* Promote the value to int before returning it. */
11198 if (C_PROMOTING_INTEGER_TYPE_P (restype))
11199 restype = type_promotes_to (restype);
11201 /* If this fcn was already referenced via a block-scope `extern' decl
11202 (or an implicit decl), propagate certain information about the usage. */
11203 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1)))
11204 TREE_ADDRESSABLE (decl1) = 1;
11206 if (DECL_RESULT (decl1) == NULL_TREE)
11208 DECL_RESULT (decl1)
11209 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype));
11210 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (restype);
11211 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (restype);
11214 /* Allocate further tree nodes temporarily during compilation
11215 of this function only. Tiemann moved up here from bottom of fn. */
11216 temporary_allocation ();
11218 if (processing_template_decl)
11220 extern tree last_tree;
11221 ++minimal_parse_mode;
11222 last_tree = DECL_SAVED_TREE (decl1)
11223 = build_nt (EXPR_STMT, void_zero_node);
11228 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1))
11229 && DECL_LANGUAGE (decl1) == lang_cplusplus)
11231 dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11232 ctor_label = NULL_TREE;
11236 dtor_label = NULL_TREE;
11237 if (DECL_CONSTRUCTOR_P (decl1))
11238 ctor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11245 store_after_parms (insns)
11250 for (x = get_insns (); x; x = next_insn (x))
11252 if (GET_CODE (x) == NOTE && NOTE_LINE_NUMBER (x) == NOTE_INSN_FUNCTION_BEG)
11254 emit_insns_after (insns, x);
11259 /* This doesn't work, because the inline output routine doesn't reset
11260 last_parm_insn correctly for get_first_nonparm_insn () to work. */
11262 last_parm_insn = get_first_nonparm_insn ();
11263 if (last_parm_insn == NULL_RTX)
11264 emit_insns (insns);
11266 emit_insns_before (insns, last_parm_insn);
11271 expand_start_early_try_stmts ()
11275 expand_start_try_stmts ();
11276 insns = get_insns ();
11279 emit_insns_after (insns, get_insns ());
11281 store_after_parms (insns);
11285 /* Store the parameter declarations into the current function declaration.
11286 This is called after parsing the parameter declarations, before
11287 digesting the body of the function.
11289 Also install to binding contour return value identifier, if any. */
11292 store_parm_decls ()
11294 register tree fndecl = current_function_decl;
11295 register tree parm;
11296 int parms_have_cleanups = 0;
11298 /* This is either a chain of PARM_DECLs (when a prototype is used). */
11299 tree specparms = current_function_parms;
11301 /* This is a list of types declared among parms in a prototype. */
11302 tree parmtags = current_function_parm_tags;
11304 /* This is a chain of any other decls that came in among the parm
11305 declarations. If a parm is declared with enum {foo, bar} x;
11306 then CONST_DECLs for foo and bar are put here. */
11307 tree nonparms = NULL_TREE;
11309 if (toplevel_bindings_p ())
11310 fatal ("parse errors have confused me too much");
11312 /* Initialize RTL machinery. */
11313 init_function_start (fndecl, input_filename, lineno);
11315 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
11316 declare_function_name ();
11318 /* Create a binding level for the parms. */
11319 expand_start_bindings (0);
11321 if (specparms != NULL_TREE)
11323 /* This case is when the function was defined with an ANSI prototype.
11324 The parms already have decls, so we need not do anything here
11325 except record them as in effect
11326 and complain if any redundant old-style parm decls were written. */
11328 register tree next;
11330 /* Must clear this because it might contain TYPE_DECLs declared
11332 storedecls (NULL_TREE);
11334 for (parm = nreverse (specparms); parm; parm = next)
11336 next = TREE_CHAIN (parm);
11337 if (TREE_CODE (parm) == PARM_DECL)
11340 if (DECL_NAME (parm) == NULL_TREE)
11344 else if (TYPE_MAIN_VARIANT (TREE_TYPE (parm)) == void_type_node)
11345 cp_error ("parameter `%D' declared void", parm);
11348 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
11349 A parameter is assumed not to have any side effects.
11350 If this should change for any reason, then this
11351 will have to wrap the bashed reference type in a save_expr.
11353 Also, if the parameter type is declared to be an X
11354 and there is an X(X&) constructor, we cannot lay it
11355 into the stack (any more), so we make this parameter
11356 look like it is really of reference type. Functions
11357 which pass parameters to this function will know to
11358 create a temporary in their frame, and pass a reference
11361 if (TREE_CODE (TREE_TYPE (parm)) == REFERENCE_TYPE
11362 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm))))
11363 SET_DECL_REFERENCE_SLOT (parm, convert_from_reference (parm));
11367 if (! processing_template_decl
11368 && (cleanup = maybe_build_cleanup (parm), cleanup))
11370 expand_decl (parm);
11371 if (! expand_decl_cleanup (parm, cleanup))
11372 cp_error ("parser lost in parsing declaration of `%D'",
11374 parms_have_cleanups = 1;
11379 /* If we find an enum constant or a type tag,
11380 put it aside for the moment. */
11381 TREE_CHAIN (parm) = NULL_TREE;
11382 nonparms = chainon (nonparms, parm);
11386 /* Get the decls in their original chain order
11387 and record in the function. This is all and only the
11388 PARM_DECLs that were pushed into scope by the loop above. */
11389 DECL_ARGUMENTS (fndecl) = getdecls ();
11391 storetags (chainon (parmtags, gettags ()));
11394 DECL_ARGUMENTS (fndecl) = NULL_TREE;
11396 /* Now store the final chain of decls for the arguments
11397 as the decl-chain of the current lexical scope.
11398 Put the enumerators in as well, at the front so that
11399 DECL_ARGUMENTS is not modified. */
11401 storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl)));
11403 /* Initialize the RTL code for the function. */
11404 DECL_SAVED_INSNS (fndecl) = NULL_RTX;
11405 if (! processing_template_decl)
11406 expand_function_start (fndecl, parms_have_cleanups);
11408 /* Create a binding contour which can be used to catch
11409 cleanup-generated temporaries. Also, if the return value needs or
11410 has initialization, deal with that now. */
11411 if (parms_have_cleanups)
11414 expand_start_bindings (0);
11417 current_function_parms_stored = 1;
11419 /* If this function is `main', emit a call to `__main'
11420 to run global initializers, etc. */
11421 if (DECL_NAME (fndecl)
11422 && IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4
11423 && strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main") == 0
11424 && DECL_CONTEXT (fndecl) == NULL_TREE)
11426 expand_main_function ();
11429 /* Take care of exception handling things. */
11430 if (! processing_template_decl && flag_exceptions)
11436 /* Mark the start of a stack unwinder if we need one. */
11437 start_eh_unwinder ();
11441 /* Do the starting of the exception specifications, if we have any. */
11442 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
11443 expand_start_eh_spec ();
11446 insns = get_insns ();
11450 store_after_parms (insns);
11452 last_dtor_insn = get_last_insn ();
11455 /* Bind a name and initialization to the return value of
11456 the current function. */
11459 store_return_init (return_id, init)
11460 tree return_id, init;
11462 tree decl = DECL_RESULT (current_function_decl);
11465 /* Give this error as many times as there are occurrences,
11466 so that users can use Emacs compilation buffers to find
11467 and fix all such places. */
11468 pedwarn ("ANSI C++ does not permit named return values");
11470 if (return_id != NULL_TREE)
11472 if (DECL_NAME (decl) == NULL_TREE)
11474 DECL_NAME (decl) = return_id;
11475 DECL_ASSEMBLER_NAME (decl) = return_id;
11478 cp_error ("return identifier `%D' already in place", decl);
11481 /* Can't let this happen for constructors. */
11482 if (DECL_CONSTRUCTOR_P (current_function_decl))
11484 error ("can't redefine default return value for constructors");
11488 /* If we have a named return value, put that in our scope as well. */
11489 if (DECL_NAME (decl) != NULL_TREE)
11491 /* If this named return value comes in a register,
11492 put it in a pseudo-register. */
11493 if (DECL_REGISTER (decl))
11495 original_result_rtx = DECL_RTL (decl);
11496 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
11499 /* Let `cp_finish_decl' know that this initializer is ok. */
11500 DECL_INITIAL (decl) = init;
11503 if (minimal_parse_mode)
11504 add_tree (build_min_nt (RETURN_INIT, return_id,
11505 copy_to_permanent (init)));
11507 cp_finish_decl (decl, init, NULL_TREE, 0, LOOKUP_ONLYCONVERTING);
11512 /* Finish up a function declaration and compile that function
11513 all the way to assembler language output. The free the storage
11514 for the function definition.
11516 This is called after parsing the body of the function definition.
11517 LINENO is the current line number.
11519 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
11520 (and expand_end_bindings) must be made to take care of the binding
11521 contour for the base initializers. This is only relevant for
11524 NESTED is nonzero if we were in the middle of compiling another function
11525 when we started on this one. */
11528 finish_function (lineno, call_poplevel, nested)
11533 register tree fndecl = current_function_decl;
11534 tree fntype, ctype = NULL_TREE;
11535 rtx last_parm_insn, insns;
11536 /* Label to use if this function is supposed to return a value. */
11537 tree no_return_label = NULL_TREE;
11538 tree decls = NULL_TREE;
11540 /* When we get some parse errors, we can end up without a
11541 current_function_decl, so cope. */
11542 if (fndecl == NULL_TREE)
11545 if (! nested && function_depth > 1)
11548 fntype = TREE_TYPE (fndecl);
11550 /* TREE_READONLY (fndecl) = 1;
11551 This caused &foo to be of type ptr-to-const-function
11552 which then got a warning when stored in a ptr-to-function variable. */
11554 /* This happens on strange parse errors. */
11555 if (! current_function_parms_stored)
11558 store_parm_decls ();
11561 if (processing_template_decl)
11563 if (DECL_CONSTRUCTOR_P (fndecl) && call_poplevel)
11565 decls = getdecls ();
11566 expand_end_bindings (decls, decls != NULL_TREE, 0);
11567 poplevel (decls != NULL_TREE, 0, 0);
11572 if (write_symbols != NO_DEBUG /*&& TREE_CODE (fntype) != METHOD_TYPE*/)
11574 tree ttype = target_type (fntype);
11577 if (IS_AGGR_TYPE (ttype))
11578 /* Let debugger know it should output info for this type. */
11579 note_debug_info_needed (ttype);
11581 for (parmdecl = DECL_ARGUMENTS (fndecl); parmdecl; parmdecl = TREE_CHAIN (parmdecl))
11583 ttype = target_type (TREE_TYPE (parmdecl));
11584 if (IS_AGGR_TYPE (ttype))
11585 /* Let debugger know it should output info for this type. */
11586 note_debug_info_needed (ttype);
11590 /* Clean house because we will need to reorder insns here. */
11591 do_pending_stack_adjust ();
11595 tree binfo = TYPE_BINFO (current_class_type);
11596 tree cond = integer_one_node;
11598 tree in_charge_node = lookup_name (in_charge_identifier, 0);
11600 int ok_to_optimize_dtor = 0;
11601 int empty_dtor = get_last_insn () == last_dtor_insn;
11603 if (current_function_assigns_this)
11604 cond = build (NE_EXPR, boolean_type_node,
11605 current_class_ptr, integer_zero_node);
11608 int n_baseclasses = CLASSTYPE_N_BASECLASSES (current_class_type);
11610 /* If this destructor is empty, then we don't need to check
11611 whether `this' is NULL in some cases. */
11612 if ((flag_this_is_variable & 1) == 0)
11613 ok_to_optimize_dtor = 1;
11614 else if (empty_dtor)
11615 ok_to_optimize_dtor
11616 = (n_baseclasses == 0
11617 || (n_baseclasses == 1
11618 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type, 0))));
11621 /* These initializations might go inline. Protect
11622 the binding level of the parms. */
11624 expand_start_bindings (0);
11626 if (current_function_assigns_this)
11628 current_function_assigns_this = 0;
11629 current_function_just_assigned_this = 0;
11632 /* Generate the code to call destructor on base class.
11633 If this destructor belongs to a class with virtual
11634 functions, then set the virtual function table
11635 pointer to represent the type of our base class. */
11637 /* This side-effect makes call to `build_delete' generate the
11638 code we have to have at the end of this destructor. */
11639 TYPE_HAS_DESTRUCTOR (current_class_type) = 0;
11641 /* These are two cases where we cannot delegate deletion. */
11642 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)
11643 || TYPE_GETS_REG_DELETE (current_class_type))
11644 exprstmt = build_delete (current_class_type, current_class_ref, integer_zero_node,
11645 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
11647 exprstmt = build_delete (current_class_type, current_class_ref, in_charge_node,
11648 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
11650 /* If we did not assign to this, then `this' is non-zero at
11651 the end of a destructor. As a special optimization, don't
11652 emit test if this is an empty destructor. If it does nothing,
11653 it does nothing. If it calls a base destructor, the base
11654 destructor will perform the test. */
11656 if (exprstmt != error_mark_node
11657 && (TREE_CODE (exprstmt) != NOP_EXPR
11658 || TREE_OPERAND (exprstmt, 0) != integer_zero_node
11659 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)))
11661 expand_label (dtor_label);
11662 if (cond != integer_one_node)
11663 expand_start_cond (cond, 0);
11664 if (exprstmt != void_zero_node)
11665 /* Don't call `expand_expr_stmt' if we're not going to do
11666 anything, since -Wall will give a diagnostic. */
11667 expand_expr_stmt (exprstmt);
11669 /* Run destructor on all virtual baseclasses. */
11670 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11672 tree vbases = nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type)));
11673 expand_start_cond (build (BIT_AND_EXPR, integer_type_node,
11674 in_charge_node, integer_two_node), 0);
11677 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases)))
11679 tree ptr = convert_pointer_to_vbase (BINFO_TYPE (vbases), current_class_ptr);
11682 (build_pointer_type (BINFO_TYPE (vbases)),
11683 ptr, integer_zero_node,
11684 (LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR
11685 |LOOKUP_HAS_IN_CHARGE|LOOKUP_NORMAL),
11688 vbases = TREE_CHAIN (vbases);
11690 expand_end_cond ();
11693 do_pending_stack_adjust ();
11694 if (cond != integer_one_node)
11695 expand_end_cond ();
11698 TYPE_HAS_DESTRUCTOR (current_class_type) = 1;
11700 virtual_size = c_sizeof (current_class_type);
11702 /* At the end, call delete if that's what's requested. */
11703 if (TYPE_GETS_REG_DELETE (current_class_type))
11704 /* This NOP_EXPR means we are in a static call context. */
11707 (build_indirect_ref
11708 (build1 (NOP_EXPR, build_pointer_type (current_class_type),
11711 ansi_opname[(int) DELETE_EXPR],
11712 tree_cons (NULL_TREE, current_class_ptr,
11713 build_tree_list (NULL_TREE, virtual_size)),
11714 NULL_TREE, LOOKUP_NORMAL);
11715 else if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11716 exprstmt = build_x_delete (ptr_type_node, current_class_ptr, 0,
11719 exprstmt = NULL_TREE;
11723 cond = build (BIT_AND_EXPR, integer_type_node,
11724 in_charge_node, integer_one_node);
11725 expand_start_cond (cond, 0);
11726 expand_expr_stmt (exprstmt);
11727 expand_end_cond ();
11730 /* End of destructor. */
11731 expand_end_bindings (NULL_TREE, getdecls () != NULL_TREE, 0);
11732 poplevel (2, 0, 0); /* XXX change to 1 */
11734 /* Back to the top of destructor. */
11735 /* Dont execute destructor code if `this' is NULL. */
11739 /* If the dtor is empty, and we know there is not possible way we
11740 could use any vtable entries, before they are possibly set by
11741 a base class dtor, we don't have to setup the vtables, as we
11742 know that any base class dtoring will set up any vtables it
11743 needs. We avoid MI, because one base class dtor can do a
11744 virtual dispatch to an overridden function that would need to
11745 have a non-related vtable set up, we cannot avoid setting up
11746 vtables in that case. We could change this to see if there is
11747 just one vtable. */
11748 if (! empty_dtor || TYPE_USES_COMPLEX_INHERITANCE (current_class_type))
11750 /* Make all virtual function table pointers in non-virtual base
11751 classes point to CURRENT_CLASS_TYPE's virtual function
11753 expand_direct_vtbls_init (binfo, binfo, 1, 0, current_class_ptr);
11755 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11756 expand_indirect_vtbls_init (binfo, current_class_ref, current_class_ptr);
11759 if (! ok_to_optimize_dtor)
11761 cond = build_binary_op (NE_EXPR,
11762 current_class_ptr, integer_zero_node, 1);
11763 expand_start_cond (cond, 0);
11766 insns = get_insns ();
11769 last_parm_insn = get_first_nonparm_insn ();
11770 if (last_parm_insn == NULL_RTX)
11771 last_parm_insn = get_last_insn ();
11773 last_parm_insn = previous_insn (last_parm_insn);
11775 emit_insns_after (insns, last_parm_insn);
11777 if (! ok_to_optimize_dtor)
11778 expand_end_cond ();
11780 else if (current_function_assigns_this)
11782 /* Does not need to call emit_base_init, because
11783 that is done (if needed) just after assignment to this
11786 if (DECL_CONSTRUCTOR_P (current_function_decl))
11788 end_protect_partials ();
11789 expand_label (ctor_label);
11790 ctor_label = NULL_TREE;
11794 decls = getdecls ();
11795 expand_end_bindings (decls, decls != NULL_TREE, 0);
11796 poplevel (decls != NULL_TREE, 0, 0);
11798 c_expand_return (current_class_ptr);
11800 else if (TYPE_MAIN_VARIANT (TREE_TYPE (
11801 DECL_RESULT (current_function_decl))) != void_type_node
11802 && return_label != NULL_RTX)
11803 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11805 current_function_assigns_this = 0;
11806 current_function_just_assigned_this = 0;
11807 base_init_expr = NULL_TREE;
11809 else if (DECL_CONSTRUCTOR_P (fndecl))
11811 tree cond, thenclause;
11812 /* Allow constructor for a type to get a new instance of the object
11813 using `build_new'. */
11814 tree abstract_virtuals = CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type);
11815 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = NULL_TREE;
11817 DECL_RETURNS_FIRST_ARG (fndecl) = 1;
11819 if (flag_this_is_variable > 0)
11821 cond = build_binary_op (EQ_EXPR,
11822 current_class_ptr, integer_zero_node, 1);
11823 thenclause = build_modify_expr (current_class_ptr, NOP_EXPR,
11824 build_new (NULL_TREE, current_class_type, void_type_node, 0));
11827 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = abstract_virtuals;
11831 if (flag_this_is_variable > 0)
11833 expand_start_cond (cond, 0);
11834 expand_expr_stmt (thenclause);
11835 expand_end_cond ();
11838 /* Emit insns from `emit_base_init' which sets up virtual
11839 function table pointer(s). */
11840 if (base_init_expr)
11842 expand_expr_stmt (base_init_expr);
11843 base_init_expr = NULL_TREE;
11846 insns = get_insns ();
11849 /* This is where the body of the constructor begins.
11850 If there were no insns in this function body, then the
11851 last_parm_insn is also the last insn.
11853 If optimization is enabled, last_parm_insn may move, so
11854 we don't hold on to it (across emit_base_init). */
11855 last_parm_insn = get_first_nonparm_insn ();
11856 if (last_parm_insn == NULL_RTX)
11857 last_parm_insn = get_last_insn ();
11859 last_parm_insn = previous_insn (last_parm_insn);
11861 emit_insns_after (insns, last_parm_insn);
11863 end_protect_partials ();
11865 /* This is where the body of the constructor ends. */
11866 expand_label (ctor_label);
11867 ctor_label = NULL_TREE;
11871 decls = getdecls ();
11872 expand_end_bindings (decls, decls != NULL_TREE, 0);
11873 poplevel (decls != NULL_TREE, 1, 0);
11876 c_expand_return (current_class_ptr);
11878 current_function_assigns_this = 0;
11879 current_function_just_assigned_this = 0;
11881 else if (IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4
11882 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main")
11883 && DECL_CONTEXT (fndecl) == NULL_TREE)
11885 /* Make it so that `main' always returns 0 by default. */
11887 c_expand_return (integer_one_node);
11889 c_expand_return (integer_zero_node);
11892 else if (return_label != NULL_RTX
11893 && current_function_return_value == NULL_TREE
11894 && ! DECL_NAME (DECL_RESULT (current_function_decl)))
11895 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11897 /* If this function is supposed to return a value, ensure that
11898 we do not fall into the cleanups by mistake. The end of our
11899 function will look like this:
11901 user code (may have return stmt somewhere)
11902 goto no_return_label
11907 NOTE_INSN_FUNCTION_END
11911 If the user omits a return stmt in the USER CODE section, we
11912 will have a control path which reaches NOTE_INSN_FUNCTION_END.
11913 Otherwise, we won't. */
11914 if (no_return_label)
11916 DECL_CONTEXT (no_return_label) = fndecl;
11917 DECL_INITIAL (no_return_label) = error_mark_node;
11918 DECL_SOURCE_FILE (no_return_label) = input_filename;
11919 DECL_SOURCE_LINE (no_return_label) = lineno;
11920 expand_goto (no_return_label);
11925 /* remove the binding contour which is used
11926 to catch cleanup-generated temporaries. */
11927 expand_end_bindings (0, 0, 0);
11928 poplevel (0, 0, 0);
11932 /* Emit label at beginning of cleanup code for parameters. */
11933 emit_label (cleanup_label);
11935 /* Get return value into register if that's where it's supposed to be. */
11936 if (original_result_rtx)
11937 fixup_result_decl (DECL_RESULT (fndecl), original_result_rtx);
11939 /* Finish building code that will trigger warnings if users forget
11940 to make their functions return values. */
11941 if (no_return_label || cleanup_label)
11942 emit_jump (return_label);
11943 if (no_return_label)
11945 /* We don't need to call `expand_*_return' here because we
11946 don't need any cleanups here--this path of code is only
11947 for error checking purposes. */
11948 expand_label (no_return_label);
11951 /* Generate rtl for function exit. */
11952 expand_function_end (input_filename, lineno, 1);
11954 if (flag_exceptions)
11955 expand_exception_blocks ();
11958 /* This must come after expand_function_end because cleanups might
11959 have declarations (from inline functions) that need to go into
11960 this function's blocks. */
11961 if (current_binding_level->parm_flag != 1)
11962 my_friendly_abort (122);
11963 poplevel (1, 0, 1);
11965 /* reset scope for C++: if we were in the scope of a class,
11966 then when we finish this function, we are not longer so.
11967 This cannot be done until we know for sure that no more
11968 class members will ever be referenced in this function
11969 (i.e., calls to destructors). */
11970 if (current_class_name)
11972 ctype = current_class_type;
11973 pop_nested_class (1);
11976 pop_memoized_context (1);
11978 /* Must mark the RESULT_DECL as being in this function. */
11979 DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
11981 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
11982 to the FUNCTION_DECL node itself. */
11983 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
11985 if (! processing_template_decl)
11987 /* So we can tell if jump_optimize sets it to 1. */
11990 /* Run the optimizers and output the assembler code for this function. */
11991 rest_of_compilation (fndecl);
11993 if (DECL_SAVED_INSNS (fndecl) && ! TREE_ASM_WRITTEN (fndecl))
11995 /* Set DECL_EXTERNAL so that assemble_external will be called as
11996 necessary. We'll clear it again in finish_file. */
11997 if (! DECL_EXTERNAL (fndecl))
11998 DECL_NOT_REALLY_EXTERN (fndecl) = 1;
11999 DECL_EXTERNAL (fndecl) = 1;
12000 mark_inline_for_output (fndecl);
12003 if (ctype && TREE_ASM_WRITTEN (fndecl))
12004 note_debug_info_needed (ctype);
12006 current_function_returns_null |= can_reach_end;
12008 /* Since we don't normally go through c_expand_return for constructors,
12009 this normally gets the wrong value.
12010 Also, named return values have their return codes emitted after
12011 NOTE_INSN_FUNCTION_END, confusing jump.c. */
12012 if (DECL_CONSTRUCTOR_P (fndecl)
12013 || DECL_NAME (DECL_RESULT (fndecl)) != NULL_TREE)
12014 current_function_returns_null = 0;
12016 if (TREE_THIS_VOLATILE (fndecl) && current_function_returns_null)
12017 cp_warning ("`noreturn' function `%D' does return", fndecl);
12018 else if ((warn_return_type || pedantic)
12019 && current_function_returns_null
12020 && TYPE_MAIN_VARIANT (TREE_TYPE (fntype)) != void_type_node)
12022 /* If this function returns non-void and control can drop through,
12024 cp_pedwarn ("control reaches end of non-void function `%D'", fndecl);
12026 /* With just -W, complain only if function returns both with
12027 and without a value. */
12028 else if (extra_warnings
12029 && current_function_returns_value && current_function_returns_null)
12030 warning ("this function may return with or without a value");
12035 /* Free all the tree nodes making up this function. */
12036 /* Switch back to allocating nodes permanently
12037 until we start another function. */
12038 if (processing_template_decl)
12040 --minimal_parse_mode;
12041 DECL_SAVED_TREE (fndecl) = TREE_CHAIN (DECL_SAVED_TREE (fndecl));
12045 permanent_allocation (1);
12047 if (DECL_SAVED_INSNS (fndecl) == NULL_RTX)
12049 /* Stop pointing to the local nodes about to be freed. */
12050 /* But DECL_INITIAL must remain nonzero so we know this
12051 was an actual function definition. */
12052 DECL_INITIAL (fndecl) = error_mark_node;
12053 /* And we need the arguments for template instantiation. */
12054 if (! processing_template_decl)
12055 DECL_ARGUMENTS (fndecl) = NULL_TREE;
12058 if (DECL_STATIC_CONSTRUCTOR (fndecl))
12059 static_ctors = perm_tree_cons (NULL_TREE, fndecl, static_ctors);
12060 if (DECL_STATIC_DESTRUCTOR (fndecl))
12061 static_dtors = perm_tree_cons (NULL_TREE, fndecl, static_dtors);
12065 /* Let the error reporting routines know that we're outside a
12066 function. For a nested function, this value is used in
12067 pop_cp_function_context and then reset via pop_function_context. */
12068 current_function_decl = NULL_TREE;
12071 named_label_uses = NULL;
12072 current_class_ptr = NULL_TREE;
12073 current_class_ref = NULL_TREE;
12076 /* Create the FUNCTION_DECL for a function definition.
12077 LINE1 is the line number that the definition absolutely begins on.
12078 LINE2 is the line number that the name of the function appears on.
12079 DECLSPECS and DECLARATOR are the parts of the declaration;
12080 they describe the return type and the name of the function,
12081 but twisted together in a fashion that parallels the syntax of C.
12083 This function creates a binding context for the function body
12084 as well as setting up the FUNCTION_DECL in current_function_decl.
12086 Returns a FUNCTION_DECL on success.
12088 If the DECLARATOR is not suitable for a function (it defines a datum
12089 instead), we return 0, which tells yyparse to report a parse error.
12091 May return void_type_node indicating that this method is actually
12092 a friend. See grokfield for more details.
12094 Came here with a `.pushlevel' .
12096 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
12097 CHANGES TO CODE IN `grokfield'. */
12100 start_method (declspecs, declarator)
12101 tree declarator, declspecs;
12103 tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
12106 /* Something too ugly to handle. */
12107 if (fndecl == NULL_TREE)
12110 /* Pass friends other than inline friend functions back. */
12111 if (TYPE_MAIN_VARIANT (fndecl) == void_type_node)
12114 if (TREE_CODE (fndecl) != FUNCTION_DECL)
12115 /* Not a function, tell parser to report parse error. */
12118 if (IS_SIGNATURE (current_class_type))
12120 IS_DEFAULT_IMPLEMENTATION (fndecl) = 1;
12121 /* In case we need this info later. */
12122 HAS_DEFAULT_IMPLEMENTATION (current_class_type) = 1;
12125 if (DECL_IN_AGGR_P (fndecl))
12127 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type)
12129 if (DECL_CONTEXT (fndecl))
12130 cp_error ("`%D' is already defined in class %s", fndecl,
12131 TYPE_NAME_STRING (DECL_CONTEXT (fndecl)));
12133 return void_type_node;
12136 DECL_THIS_INLINE (fndecl) = 1;
12138 if (flag_default_inline)
12139 DECL_INLINE (fndecl) = 1;
12141 if (processing_template_decl && ! current_function_decl)
12142 push_template_decl (fndecl);
12144 /* We read in the parameters on the maybepermanent_obstack,
12145 but we won't be getting back to them until after we
12146 may have clobbered them. So the call to preserve_data
12147 will keep them safe. */
12150 if (! DECL_FRIEND_P (fndecl))
12152 if (DECL_CHAIN (fndecl) != NULL_TREE)
12154 /* Need a fresh node here so that we don't get circularity
12155 when we link these together. If FNDECL was a friend, then
12156 `pushdecl' does the right thing, which is nothing wrt its
12157 current value of DECL_CHAIN. */
12158 fndecl = copy_node (fndecl);
12160 if (TREE_CHAIN (fndecl))
12162 fndecl = copy_node (fndecl);
12163 TREE_CHAIN (fndecl) = NULL_TREE;
12166 if (DECL_CONSTRUCTOR_P (fndecl))
12168 if (! grok_ctor_properties (current_class_type, fndecl))
12169 return void_type_node;
12171 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl)))
12172 grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0);
12175 cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0, 0);
12177 /* Make a place for the parms */
12179 current_binding_level->parm_flag = 1;
12181 DECL_IN_AGGR_P (fndecl) = 1;
12185 /* Go through the motions of finishing a function definition.
12186 We don't compile this method until after the whole class has
12189 FINISH_METHOD must return something that looks as though it
12190 came from GROKFIELD (since we are defining a method, after all).
12192 This is called after parsing the body of the function definition.
12193 STMTS is the chain of statements that makes up the function body.
12195 DECL is the ..._DECL that `start_method' provided. */
12198 finish_method (decl)
12201 register tree fndecl = decl;
12204 register tree link;
12206 if (TYPE_MAIN_VARIANT (decl) == void_type_node)
12209 old_initial = DECL_INITIAL (fndecl);
12211 /* Undo the level for the parms (from start_method).
12212 This is like poplevel, but it causes nothing to be
12213 saved. Saving information here confuses symbol-table
12214 output routines. Besides, this information will
12215 be correctly output when this method is actually
12218 /* Clear out the meanings of the local variables of this level;
12219 also record in each decl which block it belongs to. */
12221 for (link = current_binding_level->names; link; link = TREE_CHAIN (link))
12223 if (DECL_NAME (link) != NULL_TREE)
12224 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = 0;
12225 my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163);
12226 DECL_CONTEXT (link) = NULL_TREE;
12229 /* Restore all name-meanings of the outer levels
12230 that were shadowed by this level. */
12232 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
12233 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12234 for (link = current_binding_level->class_shadowed;
12235 link; link = TREE_CHAIN (link))
12236 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12237 for (link = current_binding_level->type_shadowed;
12238 link; link = TREE_CHAIN (link))
12239 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12241 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
12242 (HOST_WIDE_INT) current_binding_level->level_chain,
12243 current_binding_level->parm_flag,
12244 current_binding_level->keep);
12246 poplevel (0, 0, 0);
12248 DECL_INITIAL (fndecl) = old_initial;
12250 /* We used to check if the context of FNDECL was different from
12251 current_class_type as another way to get inside here. This didn't work
12252 for String.cc in libg++. */
12253 if (DECL_FRIEND_P (fndecl))
12255 CLASSTYPE_INLINE_FRIENDS (current_class_type)
12256 = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type));
12257 decl = void_type_node;
12263 /* Called when a new struct TYPE is defined.
12264 If this structure or union completes the type of any previous
12265 variable declaration, lay it out and output its rtl. */
12268 hack_incomplete_structures (type)
12273 if (current_binding_level->incomplete == NULL_TREE)
12276 if (!type) /* Don't do this for class templates. */
12279 for (list = ¤t_binding_level->incomplete; *list; )
12281 tree decl = TREE_VALUE (*list);
12282 if (decl && TREE_TYPE (decl) == type
12283 || (TREE_TYPE (decl)
12284 && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
12285 && TREE_TYPE (TREE_TYPE (decl)) == type))
12287 int toplevel = toplevel_bindings_p ();
12288 if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
12289 && TREE_TYPE (TREE_TYPE (decl)) == type)
12290 layout_type (TREE_TYPE (decl));
12291 layout_decl (decl, 0);
12292 rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0);
12296 expand_decl (decl);
12297 cleanup = maybe_build_cleanup (decl);
12298 expand_decl_init (decl);
12299 if (! expand_decl_cleanup (decl, cleanup))
12300 cp_error ("parser lost in parsing declaration of `%D'",
12303 *list = TREE_CHAIN (*list);
12306 list = &TREE_CHAIN (*list);
12310 /* If DECL is of a type which needs a cleanup, build that cleanup here.
12311 See build_delete for information about AUTO_DELETE.
12313 Don't build these on the momentary obstack; they must live
12314 the life of the binding contour. */
12317 maybe_build_cleanup_1 (decl, auto_delete)
12318 tree decl, auto_delete;
12320 tree type = TREE_TYPE (decl);
12321 if (TYPE_NEEDS_DESTRUCTOR (type))
12323 int temp = 0, flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
12326 if (TREE_CODE (decl) != PARM_DECL)
12327 temp = suspend_momentary ();
12329 if (TREE_CODE (type) == ARRAY_TYPE)
12333 mark_addressable (decl);
12334 rval = build_unary_op (ADDR_EXPR, decl, 0);
12337 /* Optimize for space over speed here. */
12338 if (! TYPE_USES_VIRTUAL_BASECLASSES (type)
12339 || flag_expensive_optimizations)
12340 flags |= LOOKUP_NONVIRTUAL;
12342 rval = build_delete (TREE_TYPE (rval), rval, auto_delete, flags, 0);
12344 if (TYPE_USES_VIRTUAL_BASECLASSES (type)
12345 && ! TYPE_HAS_DESTRUCTOR (type))
12346 rval = build_compound_expr (tree_cons (NULL_TREE, rval,
12347 build_tree_list (NULL_TREE, build_vbase_delete (type, decl))));
12349 /* Since this is a cleanup, UNSAVE it now. */
12350 rval = unsave_expr (rval);
12352 if (TREE_CODE (decl) != PARM_DECL)
12353 resume_momentary (temp);
12360 /* If DECL is of a type which needs a cleanup, build that cleanup
12361 here. The cleanup does free the storage with a call to delete. */
12364 maybe_build_cleanup_and_delete (decl)
12367 return maybe_build_cleanup_1 (decl, integer_three_node);
12370 /* If DECL is of a type which needs a cleanup, build that cleanup
12371 here. The cleanup does not free the storage with a call a delete. */
12374 maybe_build_cleanup (decl)
12377 return maybe_build_cleanup_1 (decl, integer_two_node);
12380 /* Expand a C++ expression at the statement level.
12381 This is needed to ferret out nodes which have UNKNOWN_TYPE.
12382 The C++ type checker should get all of these out when
12383 expressions are combined with other, type-providing, expressions,
12384 leaving only orphan expressions, such as:
12386 &class::bar; / / takes its address, but does nothing with it. */
12389 cplus_expand_expr_stmt (exp)
12392 extern int temp_slot_level;
12393 extern int target_temp_slot_level;
12394 tree old_cleanups = cleanups_this_call;
12395 int old_temp_level = target_temp_slot_level;
12396 push_temp_slots ();
12397 push_temp_slots ();
12398 target_temp_slot_level = temp_slot_level;
12400 if (processing_template_decl)
12402 add_tree (build_min_nt (EXPR_STMT, exp));
12406 if (TREE_TYPE (exp) == unknown_type_node)
12408 if (TREE_CODE (exp) == ADDR_EXPR || TREE_CODE (exp) == TREE_LIST)
12409 error ("address of overloaded function with no contextual type information");
12410 else if (TREE_CODE (exp) == COMPONENT_REF)
12411 warning ("useless reference to a member function name, did you forget the ()?");
12415 if (TREE_CODE (exp) == FUNCTION_DECL)
12417 cp_warning ("reference, not call, to function `%D'", exp);
12418 warning ("at this point in file");
12422 /* We should do this eventually, but right now this causes regex.o from
12423 libg++ to miscompile, and tString to core dump. */
12424 exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp);
12426 expand_expr_stmt (break_out_cleanups (exp));
12429 /* Clean up any pending cleanups. This happens when a function call
12430 returns a cleanup-needing value that nobody uses. */
12431 expand_cleanups_to (old_cleanups);
12434 target_temp_slot_level = old_temp_level;
12435 /* There might something left from building the trees. */
12436 if (cleanups_this_call)
12438 expand_cleanups_to (NULL_TREE);
12440 free_temp_slots ();
12443 /* When a stmt has been parsed, this function is called.
12445 Currently, this function only does something within a
12446 constructor's scope: if a stmt has just assigned to this,
12447 and we are in a derived class, we call `emit_base_init'. */
12452 extern struct nesting *cond_stack, *loop_stack, *case_stack;
12455 if (current_function_assigns_this
12456 || ! current_function_just_assigned_this)
12458 if (DECL_CONSTRUCTOR_P (current_function_decl))
12460 /* Constructors must wait until we are out of control
12461 zones before calling base constructors. */
12462 if (cond_stack || loop_stack || case_stack)
12464 expand_expr_stmt (base_init_expr);
12465 check_base_init (current_class_type);
12467 current_function_assigns_this = 1;
12470 /* Change a static member function definition into a FUNCTION_TYPE, instead
12471 of the METHOD_TYPE that we create when it's originally parsed.
12473 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
12474 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
12475 other decls. Either pass the addresses of local variables or NULL. */
12478 revert_static_member_fn (decl, fn, argtypes)
12479 tree *decl, *fn, *argtypes;
12482 tree function = fn ? *fn : TREE_TYPE (*decl);
12483 tree args = argtypes ? *argtypes : TYPE_ARG_TYPES (function);
12485 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args))))
12486 cp_error ("static member function `%#D' declared const", *decl);
12487 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args))))
12488 cp_error ("static member function `%#D' declared volatile", *decl);
12490 args = TREE_CHAIN (args);
12491 tmp = build_function_type (TREE_TYPE (function), args);
12492 tmp = build_type_variant (tmp, TYPE_READONLY (function),
12493 TYPE_VOLATILE (function));
12494 tmp = build_exception_variant (tmp,
12495 TYPE_RAISES_EXCEPTIONS (function));
12496 TREE_TYPE (*decl) = tmp;
12497 if (DECL_ARGUMENTS (*decl))
12498 DECL_ARGUMENTS (*decl) = TREE_CHAIN (DECL_ARGUMENTS (*decl));
12499 DECL_STATIC_FUNCTION_P (*decl) = 1;
12507 id_in_current_class (id)
12510 return !!purpose_member (id, class_binding_level->class_shadowed);
12517 int warn_about_return_type;
12519 int just_assigned_this;
12521 int temp_name_counter;
12523 tree shadowed_labels;
12526 rtx last_dtor_insn;
12527 tree base_init_list;
12528 tree member_init_list;
12529 tree base_init_expr;
12530 tree current_class_ptr;
12531 tree current_class_ref;
12533 struct cp_function *next;
12534 struct binding_level *binding_level;
12539 struct cp_function *cp_function_chain;
12541 extern int temp_name_counter;
12543 /* Save and reinitialize the variables
12544 used during compilation of a C++ function. */
12547 push_cp_function_context (context)
12550 struct cp_function *p
12551 = (struct cp_function *) xmalloc (sizeof (struct cp_function));
12553 push_function_context_to (context);
12555 p->next = cp_function_chain;
12556 cp_function_chain = p;
12558 p->named_labels = named_labels;
12559 p->shadowed_labels = shadowed_labels;
12560 p->returns_value = current_function_returns_value;
12561 p->returns_null = current_function_returns_null;
12562 p->warn_about_return_type = warn_about_return_type;
12563 p->binding_level = current_binding_level;
12564 p->ctor_label = ctor_label;
12565 p->dtor_label = dtor_label;
12566 p->last_dtor_insn = last_dtor_insn;
12567 p->assigns_this = current_function_assigns_this;
12568 p->just_assigned_this = current_function_just_assigned_this;
12569 p->parms_stored = current_function_parms_stored;
12570 p->result_rtx = original_result_rtx;
12571 p->base_init_expr = base_init_expr;
12572 p->temp_name_counter = temp_name_counter;
12573 p->base_init_list = current_base_init_list;
12574 p->member_init_list = current_member_init_list;
12575 p->current_class_ptr = current_class_ptr;
12576 p->current_class_ref = current_class_ref;
12579 /* Restore the variables used during compilation of a C++ function. */
12582 pop_cp_function_context (context)
12585 struct cp_function *p = cp_function_chain;
12588 /* Bring back all the labels that were shadowed. */
12589 for (link = shadowed_labels; link; link = TREE_CHAIN (link))
12590 if (DECL_NAME (TREE_VALUE (link)) != 0)
12591 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)),
12592 TREE_VALUE (link));
12594 pop_function_context_from (context);
12596 cp_function_chain = p->next;
12598 named_labels = p->named_labels;
12599 shadowed_labels = p->shadowed_labels;
12600 current_function_returns_value = p->returns_value;
12601 current_function_returns_null = p->returns_null;
12602 warn_about_return_type = p->warn_about_return_type;
12603 current_binding_level = p->binding_level;
12604 ctor_label = p->ctor_label;
12605 dtor_label = p->dtor_label;
12606 last_dtor_insn = p->last_dtor_insn;
12607 current_function_assigns_this = p->assigns_this;
12608 current_function_just_assigned_this = p->just_assigned_this;
12609 current_function_parms_stored = p->parms_stored;
12610 original_result_rtx = p->result_rtx;
12611 base_init_expr = p->base_init_expr;
12612 temp_name_counter = p->temp_name_counter;
12613 current_base_init_list = p->base_init_list;
12614 current_member_init_list = p->member_init_list;
12615 current_class_ptr = p->current_class_ptr;
12616 current_class_ref = p->current_class_ref;
12624 return function_depth != 0;
12627 /* FSF LOCAL dje prefix attributes */
12628 /* Strip attributes from SPECS_ATTRS, a list of declspecs and attributes.
12629 This function is used by the parser when a rule will accept attributes
12630 in a particular position, but we don't want to support that just yet.
12632 A warning is issued for every ignored attribute. */
12635 strip_attrs (specs_attrs)
12640 split_specs_attrs (specs_attrs, &specs, &attrs);
12644 warning ("`%s' attribute ignored",
12645 IDENTIFIER_POINTER (TREE_PURPOSE (attrs)));
12646 attrs = TREE_CHAIN (attrs);
12651 /* END FSF LOCAL */