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 traditional 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 (traditional 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 #ifdef DWARF_DEBUGGING_INFO
2071 if (write_symbols == DWARF_DEBUG)
2073 /* Mark the TYPE_DECL node we created just above as an
2074 gratuitous one. We need to do this so that dwarfout.c
2075 will understand that it is not supposed to output a
2076 TAG_typedef DIE for it. */
2077 DECL_IGNORED_P (d) = 1;
2079 #endif /* DWARF_DEBUGGING_INFO */
2080 set_identifier_type_value_with_scope (name, type, b);
2085 TYPE_NAME (type) = d;
2086 DECL_CONTEXT (d) = context;
2087 if (! globalize && processing_template_decl && IS_AGGR_TYPE (type))
2088 push_template_decl (d);
2090 /* If it is anonymous, then we are called from pushdecl,
2091 and we don't want to infinitely recurse. */
2092 if (! ANON_AGGRNAME_P (name))
2094 if (b->parm_flag == 2)
2095 d = pushdecl_class_level (d);
2097 d = pushdecl_with_scope (d, b);
2102 /* Make nested declarations go into class-level scope. */
2104 d = build_decl (TYPE_DECL, name, type);
2105 SET_DECL_ARTIFICIAL (d);
2106 #ifdef DWARF_DEBUGGING_INFO
2107 if (write_symbols == DWARF_DEBUG)
2109 /* Mark the TYPE_DECL node we created just above as an
2110 gratuitous one. We need to do this so that dwarfout.c
2111 will understand that it is not supposed to output a
2112 TAG_typedef DIE for it. */
2113 DECL_IGNORED_P (d) = 1;
2115 #endif /* DWARF_DEBUGGING_INFO */
2117 TYPE_MAIN_DECL (type) = d;
2118 DECL_CONTEXT (d) = context;
2119 if (! globalize && processing_template_decl && IS_AGGR_TYPE (type))
2120 push_template_decl (d);
2122 d = pushdecl_class_level (d);
2126 if (write_symbols != DWARF_DEBUG)
2128 if (ANON_AGGRNAME_P (name))
2129 DECL_IGNORED_P (d) = 1;
2132 TYPE_CONTEXT (type) = DECL_CONTEXT (d);
2133 DECL_ASSEMBLER_NAME (d)
2134 = get_identifier (build_overload_name (type, 1, 1));
2137 if (b->parm_flag == 2)
2139 TREE_NONLOCAL_FLAG (type) = 1;
2140 if (TYPE_SIZE (current_class_type) == NULL_TREE)
2141 CLASSTYPE_TAGS (current_class_type) = b->tags;
2145 if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
2146 /* Use the canonical TYPE_DECL for this node. */
2147 TYPE_STUB_DECL (type) = TYPE_NAME (type);
2150 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2151 will be the tagged type we just added to the current
2152 binding level. This fake NULL-named TYPE_DECL node helps
2153 dwarfout.c to know when it needs to output a
2154 representation of a tagged type, and it also gives us a
2155 convenient place to record the "scope start" address for
2158 tree d = build_decl (TYPE_DECL, NULL_TREE, type);
2159 TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b);
2163 /* Counter used to create anonymous type names. */
2165 static int anon_cnt = 0;
2167 /* Return an IDENTIFIER which can be used as a name for
2168 anonymous structs and unions. */
2175 sprintf (buf, ANON_AGGRNAME_FORMAT, anon_cnt++);
2176 return get_identifier (buf);
2179 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2180 This keeps dbxout from getting confused. */
2185 register struct binding_level *b;
2187 static int last_cnt = 0;
2189 /* Fast out if no new anon names were declared. */
2190 if (last_cnt == anon_cnt)
2193 b = current_binding_level;
2194 while (b->tag_transparent)
2199 /* A NULL purpose means we have already processed all tags
2200 from here to the end of the list. */
2201 if (TREE_PURPOSE (tags) == NULL_TREE)
2203 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags)))
2204 TREE_PURPOSE (tags) = NULL_TREE;
2205 tags = TREE_CHAIN (tags);
2207 last_cnt = anon_cnt;
2210 /* Subroutine of duplicate_decls: return truthvalue of whether
2211 or not types of these decls match.
2213 For C++, we must compare the parameter list so that `int' can match
2214 `int&' in a parameter position, but `int&' is not confused with
2218 decls_match (newdecl, olddecl)
2219 tree newdecl, olddecl;
2223 if (TREE_CODE (newdecl) == FUNCTION_DECL
2224 && TREE_CODE (olddecl) == FUNCTION_DECL)
2226 tree f1 = TREE_TYPE (newdecl);
2227 tree f2 = TREE_TYPE (olddecl);
2228 tree p1 = TYPE_ARG_TYPES (f1);
2229 tree p2 = TYPE_ARG_TYPES (f2);
2231 /* When we parse a static member function definition,
2232 we put together a FUNCTION_DECL which thinks its type
2233 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2235 if (TREE_CODE (f1) == METHOD_TYPE && DECL_STATIC_FUNCTION_P (olddecl))
2236 revert_static_member_fn (&newdecl, &f1, &p1);
2237 else if (TREE_CODE (f2) == METHOD_TYPE
2238 && DECL_STATIC_FUNCTION_P (newdecl))
2239 revert_static_member_fn (&olddecl, &f2, &p2);
2241 /* Here we must take care of the case where new default
2242 parameters are specified. Also, warn if an old
2243 declaration becomes ambiguous because default
2244 parameters may cause the two to be ambiguous. */
2245 if (TREE_CODE (f1) != TREE_CODE (f2))
2247 if (TREE_CODE (f1) == OFFSET_TYPE)
2248 cp_compiler_error ("`%D' redeclared as member function", newdecl);
2250 cp_compiler_error ("`%D' redeclared as non-member function", newdecl);
2254 if (comptypes (TREE_TYPE (f1), TREE_TYPE (f2), 1))
2256 if (! strict_prototypes_lang_c && DECL_LANGUAGE (olddecl) == lang_c
2259 types_match = self_promoting_args_p (p1);
2260 if (p1 == void_list_node)
2261 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2263 else if (!strict_prototypes_lang_c && DECL_LANGUAGE (olddecl)==lang_c
2264 && DECL_LANGUAGE (newdecl) == lang_c && p1 == NULL_TREE)
2266 types_match = self_promoting_args_p (p2);
2267 TREE_TYPE (newdecl) = TREE_TYPE (olddecl);
2270 types_match = compparms (p1, p2, 3);
2275 else if (TREE_CODE (newdecl) == TEMPLATE_DECL
2276 && TREE_CODE (olddecl) == TEMPLATE_DECL)
2278 tree newargs = DECL_TEMPLATE_PARMS (newdecl);
2279 tree oldargs = DECL_TEMPLATE_PARMS (olddecl);
2280 int i, len = TREE_VEC_LENGTH (newargs);
2282 if (TREE_VEC_LENGTH (oldargs) != len)
2285 for (i = 0; i < len; i++)
2287 tree newarg = TREE_VALUE (TREE_VEC_ELT (newargs, i));
2288 tree oldarg = TREE_VALUE (TREE_VEC_ELT (oldargs, i));
2289 if (TREE_CODE (newarg) != TREE_CODE (oldarg))
2291 else if (TREE_CODE (newarg) == TYPE_DECL)
2293 else if (! comptypes (TREE_TYPE (newarg), TREE_TYPE (oldarg), 1))
2297 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2300 types_match = decls_match (DECL_TEMPLATE_RESULT (olddecl),
2301 DECL_TEMPLATE_RESULT (newdecl));
2305 if (TREE_TYPE (newdecl) == error_mark_node)
2306 types_match = TREE_TYPE (olddecl) == error_mark_node;
2307 else if (TREE_TYPE (olddecl) == NULL_TREE)
2308 types_match = TREE_TYPE (newdecl) == NULL_TREE;
2309 else if (TREE_TYPE (newdecl) == NULL_TREE)
2311 /* Qualifiers must match, and they may be present on either, the type
2313 else if ((TREE_READONLY (newdecl)
2314 || TYPE_READONLY (TREE_TYPE (newdecl)))
2315 == (TREE_READONLY (olddecl)
2316 || TYPE_READONLY (TREE_TYPE (olddecl)))
2317 && (TREE_THIS_VOLATILE (newdecl)
2318 || TYPE_VOLATILE (TREE_TYPE (newdecl)))
2319 == (TREE_THIS_VOLATILE (olddecl)
2320 || TYPE_VOLATILE (TREE_TYPE (olddecl))))
2321 types_match = comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl)),
2322 TYPE_MAIN_VARIANT (TREE_TYPE (olddecl)), 1);
2330 /* If NEWDECL is `static' and an `extern' was seen previously,
2331 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2332 information about previous usage as an `extern'.)
2334 Note that this does not apply to the C++ case of declaring
2335 a variable `extern const' and then later `const'.
2337 Don't complain if -traditional, since traditional compilers
2340 Don't complain about built-in functions, since they are beyond
2341 the user's control. */
2344 warn_extern_redeclared_static (newdecl, olddecl)
2345 tree newdecl, olddecl;
2349 static char *explicit_extern_static_warning
2350 = "`%D' was declared `extern' and later `static'";
2351 static char *implicit_extern_static_warning
2352 = "`%D' was declared implicitly `extern' and later `static'";
2354 if (flag_traditional
2355 || TREE_CODE (newdecl) == TYPE_DECL)
2358 name = DECL_ASSEMBLER_NAME (newdecl);
2359 if (TREE_PUBLIC (name) && DECL_THIS_STATIC (newdecl))
2361 /* It's okay to redeclare an ANSI built-in function as static,
2362 or to declare a non-ANSI built-in function as anything. */
2363 if (! (TREE_CODE (newdecl) == FUNCTION_DECL
2364 && olddecl != NULL_TREE
2365 && TREE_CODE (olddecl) == FUNCTION_DECL
2366 && (DECL_BUILT_IN (olddecl)
2367 || DECL_BUILT_IN_NONANSI (olddecl))))
2369 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name)
2370 ? implicit_extern_static_warning
2371 : explicit_extern_static_warning, newdecl);
2372 if (olddecl != NULL_TREE)
2373 cp_pedwarn_at ("previous declaration of `%D'", olddecl);
2378 /* Handle when a new declaration NEWDECL has the same name as an old
2379 one OLDDECL in the same binding contour. Prints an error message
2382 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2383 Otherwise, return 0. */
2386 duplicate_decls (newdecl, olddecl)
2387 register tree newdecl, olddecl;
2389 extern struct obstack permanent_obstack;
2390 unsigned olddecl_uid = DECL_UID (olddecl);
2391 int olddecl_friend = 0, types_match = 0;
2392 int new_defines_function;
2394 if (newdecl == olddecl)
2397 if (TREE_CODE_CLASS (TREE_CODE (olddecl)) == 'd')
2398 DECL_MACHINE_ATTRIBUTES (newdecl) = DECL_MACHINE_ATTRIBUTES (olddecl);
2400 types_match = decls_match (newdecl, olddecl);
2402 if (TREE_CODE (olddecl) != TREE_LIST)
2403 olddecl_friend = DECL_LANG_SPECIFIC (olddecl) && DECL_FRIEND_P (olddecl);
2405 /* If either the type of the new decl or the type of the old decl is an
2406 error_mark_node, then that implies that we have already issued an
2407 error (earlier) for some bogus type specification, and in that case,
2408 it is rather pointless to harass the user with yet more error message
2409 about the same declaration, so well just pretent the types match here. */
2410 if ((TREE_TYPE (newdecl)
2411 && TREE_CODE (TREE_TYPE (newdecl)) == ERROR_MARK)
2412 || (TREE_TYPE (olddecl)
2413 && TREE_CODE (TREE_TYPE (olddecl)) == ERROR_MARK))
2416 if (flag_traditional && TREE_CODE (newdecl) == FUNCTION_DECL
2417 && IDENTIFIER_IMPLICIT_DECL (DECL_ASSEMBLER_NAME (newdecl)) == olddecl)
2418 /* If -traditional, avoid error for redeclaring fcn
2419 after implicit decl. */
2421 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2422 && DECL_ARTIFICIAL (olddecl)
2423 && (DECL_BUILT_IN (olddecl) || DECL_BUILT_IN_NONANSI (olddecl)))
2425 /* If you declare a built-in or predefined function name as static,
2426 the old definition is overridden, but optionally warn this was a
2427 bad choice of name. Ditto for overloads. */
2428 if (! DECL_PUBLIC (newdecl)
2429 || (TREE_CODE (newdecl) == FUNCTION_DECL
2430 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl)))
2433 cp_warning ("shadowing %s function `%#D'",
2434 DECL_BUILT_IN (olddecl) ? "built-in" : "library",
2436 /* Discard the old built-in function. */
2439 else if (! types_match)
2441 if (TREE_CODE (newdecl) != FUNCTION_DECL)
2443 /* If the built-in is not ansi, then programs can override
2444 it even globally without an error. */
2445 if (! DECL_BUILT_IN (olddecl))
2446 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2450 cp_error ("declaration of `%#D'", newdecl);
2451 cp_error ("conflicts with built-in declaration `%#D'",
2457 cp_warning ("declaration of `%#D'", newdecl);
2458 cp_warning ("conflicts with built-in declaration `%#D'",
2462 else if (TREE_CODE (olddecl) != TREE_CODE (newdecl))
2464 if ((TREE_CODE (newdecl) == FUNCTION_DECL
2465 && DECL_FUNCTION_TEMPLATE_P (olddecl))
2466 || (TREE_CODE (olddecl) == FUNCTION_DECL
2467 && DECL_FUNCTION_TEMPLATE_P (newdecl)))
2470 cp_error ("`%#D' redeclared as different kind of symbol", newdecl);
2471 if (TREE_CODE (olddecl) == TREE_LIST)
2472 olddecl = TREE_VALUE (olddecl);
2473 cp_error_at ("previous declaration of `%#D'", olddecl);
2475 /* New decl is completely inconsistent with the old one =>
2476 tell caller to replace the old one. */
2480 else if (!types_match)
2482 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2484 /* The name of a class template may not be declared to refer to
2485 any other template, class, function, object, namespace, value,
2486 or type in the same scope. */
2487 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == TYPE_DECL
2488 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL)
2490 cp_error ("declaration of template `%#D'", newdecl);
2491 cp_error_at ("conflicts with previous declaration `%#D'",
2494 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl)) == FUNCTION_DECL
2495 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
2496 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl))),
2497 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl))), 3))
2499 cp_error ("new declaration `%#D'", newdecl);
2500 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2504 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2506 if (DECL_LANGUAGE (newdecl) == lang_c
2507 && DECL_LANGUAGE (olddecl) == lang_c)
2509 cp_error ("declaration of C function `%#D' conflicts with",
2511 cp_error_at ("previous declaration `%#D' here", olddecl);
2513 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl)),
2514 TYPE_ARG_TYPES (TREE_TYPE (olddecl)), 3))
2516 cp_error ("new declaration `%#D'", newdecl);
2517 cp_error_at ("ambiguates old declaration `%#D'", olddecl);
2523 /* Already complained about this, so don't do so again. */
2524 else if (current_class_type == NULL_TREE
2525 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl)) != current_class_type)
2527 cp_error ("conflicting types for `%#D'", newdecl);
2528 cp_error_at ("previous declaration as `%#D'", olddecl);
2533 char *errmsg = redeclaration_error_message (newdecl, olddecl);
2536 cp_error (errmsg, newdecl);
2537 if (DECL_NAME (olddecl) != NULL_TREE)
2538 cp_error_at ((DECL_INITIAL (olddecl)
2539 && current_binding_level == global_binding_level)
2540 ? "`%#D' previously defined here"
2541 : "`%#D' previously declared here", olddecl);
2543 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2544 && DECL_INITIAL (olddecl) != NULL_TREE
2545 && TYPE_ARG_TYPES (TREE_TYPE (olddecl)) == NULL_TREE
2546 && TYPE_ARG_TYPES (TREE_TYPE (newdecl)) != NULL_TREE)
2548 /* Prototype decl follows defn w/o prototype. */
2549 cp_warning_at ("prototype for `%#D'", newdecl);
2550 cp_warning_at ("follows non-prototype definition here", olddecl);
2552 else if (TREE_CODE (olddecl) == FUNCTION_DECL
2553 && DECL_LANGUAGE (newdecl) != DECL_LANGUAGE (olddecl))
2555 /* extern "C" int foo ();
2556 int foo () { bar (); }
2558 if (current_lang_stack == current_lang_base)
2559 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
2562 cp_error_at ("previous declaration of `%#D' with %L linkage",
2563 olddecl, DECL_LANGUAGE (olddecl));
2564 cp_error ("conflicts with new declaration with %L linkage",
2565 DECL_LANGUAGE (newdecl));
2569 if (TREE_CODE (olddecl) == FUNCTION_DECL
2570 && ! DECL_USE_TEMPLATE (olddecl))
2572 tree t1 = TYPE_ARG_TYPES (TREE_TYPE (olddecl));
2573 tree t2 = TYPE_ARG_TYPES (TREE_TYPE (newdecl));
2576 if (TREE_CODE (TREE_TYPE (newdecl)) == METHOD_TYPE)
2577 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2);
2579 for (; t1 && t1 != void_list_node;
2580 t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2), i++)
2581 if (TREE_PURPOSE (t1) && TREE_PURPOSE (t2))
2583 if (1 == simple_cst_equal (TREE_PURPOSE (t1),
2588 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2590 cp_pedwarn_at ("after previous specification in `%#D'",
2596 cp_error ("default argument given for parameter %d of `%#D'",
2598 cp_error_at ("conflicts with previous specification in `%#D'",
2603 if (DECL_THIS_INLINE (newdecl) && ! DECL_THIS_INLINE (olddecl)
2604 && TREE_ADDRESSABLE (olddecl) && warn_inline)
2606 cp_warning ("`%#D' was used before it was declared inline",
2608 cp_warning_at ("previous non-inline declaration here",
2612 /* These bits are logically part of the type for non-functions. */
2613 else if (TREE_READONLY (newdecl) != TREE_READONLY (olddecl)
2614 || TREE_THIS_VOLATILE (newdecl) != TREE_THIS_VOLATILE (olddecl))
2616 cp_pedwarn ("type qualifiers for `%#D'", newdecl);
2617 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl);
2621 /* If new decl is `static' and an `extern' was seen previously,
2623 warn_extern_redeclared_static (newdecl, olddecl);
2625 /* We have committed to returning 1 at this point. */
2626 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2628 /* Now that functions must hold information normally held
2629 by field decls, there is extra work to do so that
2630 declaration information does not get destroyed during
2632 if (DECL_VINDEX (olddecl))
2633 DECL_VINDEX (newdecl) = DECL_VINDEX (olddecl);
2634 if (DECL_CONTEXT (olddecl))
2635 DECL_CONTEXT (newdecl) = DECL_CONTEXT (olddecl);
2636 if (DECL_CLASS_CONTEXT (olddecl))
2637 DECL_CLASS_CONTEXT (newdecl) = DECL_CLASS_CONTEXT (olddecl);
2638 if (DECL_CHAIN (newdecl) == NULL_TREE)
2639 DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl);
2640 if (DECL_PENDING_INLINE_INFO (newdecl) == (struct pending_inline *)0)
2641 DECL_PENDING_INLINE_INFO (newdecl) = DECL_PENDING_INLINE_INFO (olddecl);
2642 DECL_STATIC_CONSTRUCTOR (newdecl) |= DECL_STATIC_CONSTRUCTOR (olddecl);
2643 DECL_STATIC_DESTRUCTOR (newdecl) |= DECL_STATIC_DESTRUCTOR (olddecl);
2644 DECL_ABSTRACT_VIRTUAL_P (newdecl) |= DECL_ABSTRACT_VIRTUAL_P (olddecl);
2647 /* Deal with C++: must preserve virtual function table size. */
2648 if (TREE_CODE (olddecl) == TYPE_DECL)
2650 register tree newtype = TREE_TYPE (newdecl);
2651 register tree oldtype = TREE_TYPE (olddecl);
2653 if (newtype != error_mark_node && oldtype != error_mark_node
2654 && TYPE_LANG_SPECIFIC (newtype) && TYPE_LANG_SPECIFIC (oldtype))
2656 CLASSTYPE_VSIZE (newtype) = CLASSTYPE_VSIZE (oldtype);
2657 CLASSTYPE_FRIEND_CLASSES (newtype)
2658 = CLASSTYPE_FRIEND_CLASSES (oldtype);
2662 /* Special handling ensues if new decl is a function definition. */
2663 new_defines_function = (TREE_CODE (newdecl) == FUNCTION_DECL
2664 && DECL_INITIAL (newdecl) != NULL_TREE);
2666 /* Optionally warn about more than one declaration for the same name,
2667 but don't warn about a function declaration followed by a definition. */
2668 if (warn_redundant_decls
2669 && ! DECL_ARTIFICIAL (olddecl)
2670 && !(new_defines_function && DECL_INITIAL (olddecl) == NULL_TREE)
2671 /* Don't warn about extern decl followed by (tentative) definition. */
2672 && !(DECL_EXTERNAL (olddecl) && ! DECL_EXTERNAL (newdecl)))
2674 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl);
2675 cp_warning_at ("previous declaration of `%D'", olddecl);
2678 /* Copy all the DECL_... slots specified in the new decl
2679 except for any that we copy here from the old type. */
2681 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2683 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
2684 DECL_TEMPLATE_RESULT (olddecl) = DECL_TEMPLATE_RESULT (newdecl);
2685 DECL_TEMPLATE_PARMS (olddecl) = DECL_TEMPLATE_PARMS (newdecl);
2691 /* Automatically handles default parameters. */
2692 tree oldtype = TREE_TYPE (olddecl);
2695 /* Make sure we put the new type in the same obstack as the old one. */
2697 push_obstacks (TYPE_OBSTACK (oldtype), TYPE_OBSTACK (oldtype));
2700 push_obstacks_nochange ();
2701 end_temporary_allocation ();
2704 /* Merge the data types specified in the two decls. */
2705 newtype = common_type (TREE_TYPE (newdecl), TREE_TYPE (olddecl));
2707 if (TREE_CODE (newdecl) == VAR_DECL)
2708 DECL_THIS_EXTERN (newdecl) |= DECL_THIS_EXTERN (olddecl);
2709 /* Do this after calling `common_type' so that default
2710 parameters don't confuse us. */
2711 else if (TREE_CODE (newdecl) == FUNCTION_DECL
2712 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl))
2713 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl))))
2715 TREE_TYPE (newdecl) = build_exception_variant (newtype,
2716 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl)));
2717 TREE_TYPE (olddecl) = build_exception_variant (newtype,
2718 TYPE_RAISES_EXCEPTIONS (oldtype));
2720 if (! compexcepttypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl)))
2722 cp_error ("declaration of `%D' throws different exceptions...",
2724 cp_error_at ("...from previous declaration here", olddecl);
2727 TREE_TYPE (newdecl) = TREE_TYPE (olddecl) = newtype;
2729 /* Lay the type out, unless already done. */
2730 if (oldtype != TREE_TYPE (newdecl)
2731 && TREE_TYPE (newdecl) != error_mark_node
2732 && !(processing_template_decl && uses_template_parms (newdecl)))
2733 layout_type (TREE_TYPE (newdecl));
2735 if ((TREE_CODE (newdecl) == VAR_DECL
2736 || TREE_CODE (newdecl) == PARM_DECL
2737 || TREE_CODE (newdecl) == RESULT_DECL
2738 || TREE_CODE (newdecl) == FIELD_DECL
2739 || TREE_CODE (newdecl) == TYPE_DECL)
2740 && !(processing_template_decl && uses_template_parms (newdecl)))
2741 layout_decl (newdecl, 0);
2743 /* Merge the type qualifiers. */
2744 if (TREE_READONLY (newdecl))
2745 TREE_READONLY (olddecl) = 1;
2746 if (TREE_THIS_VOLATILE (newdecl))
2747 TREE_THIS_VOLATILE (olddecl) = 1;
2749 /* Merge the initialization information. */
2750 if (DECL_INITIAL (newdecl) == NULL_TREE
2751 && DECL_INITIAL (olddecl) != NULL_TREE)
2753 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
2754 DECL_SOURCE_FILE (newdecl) = DECL_SOURCE_FILE (olddecl);
2755 DECL_SOURCE_LINE (newdecl) = DECL_SOURCE_LINE (olddecl);
2758 /* Merge the section attribute.
2759 We want to issue an error if the sections conflict but that must be
2760 done later in decl_attributes since we are called before attributes
2762 if (DECL_SECTION_NAME (newdecl) == NULL_TREE)
2763 DECL_SECTION_NAME (newdecl) = DECL_SECTION_NAME (olddecl);
2765 /* Keep the old rtl since we can safely use it, unless it's the
2766 call to abort() used for abstract virtuals. */
2767 if ((DECL_LANG_SPECIFIC (olddecl)
2768 && !DECL_ABSTRACT_VIRTUAL_P (olddecl))
2769 || DECL_RTL (olddecl) != DECL_RTL (abort_fndecl))
2770 DECL_RTL (newdecl) = DECL_RTL (olddecl);
2774 /* If cannot merge, then use the new type and qualifiers,
2775 and don't preserve the old rtl. */
2778 /* Clean out any memory we had of the old declaration. */
2779 tree oldstatic = value_member (olddecl, static_aggregates);
2781 TREE_VALUE (oldstatic) = error_mark_node;
2783 TREE_TYPE (olddecl) = TREE_TYPE (newdecl);
2784 TREE_READONLY (olddecl) = TREE_READONLY (newdecl);
2785 TREE_THIS_VOLATILE (olddecl) = TREE_THIS_VOLATILE (newdecl);
2786 TREE_SIDE_EFFECTS (olddecl) = TREE_SIDE_EFFECTS (newdecl);
2789 /* Merge the storage class information. */
2790 DECL_WEAK (newdecl) |= DECL_WEAK (olddecl);
2791 DECL_ONE_ONLY (newdecl) |= DECL_ONE_ONLY (olddecl);
2792 TREE_PUBLIC (newdecl) = TREE_PUBLIC (olddecl);
2793 TREE_STATIC (olddecl) = TREE_STATIC (newdecl) |= TREE_STATIC (olddecl);
2794 if (! DECL_EXTERNAL (olddecl))
2795 DECL_EXTERNAL (newdecl) = 0;
2797 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2798 DECL_C_STATIC (newdecl) |= DECL_C_STATIC (olddecl);
2800 if (DECL_LANG_SPECIFIC (newdecl))
2802 DECL_INTERFACE_KNOWN (newdecl) |= DECL_INTERFACE_KNOWN (olddecl);
2803 DECL_NOT_REALLY_EXTERN (newdecl) |= DECL_NOT_REALLY_EXTERN (olddecl);
2806 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2808 DECL_THIS_INLINE (newdecl) |= DECL_THIS_INLINE (olddecl);
2810 /* If either decl says `inline', this fn is inline, unless its
2811 definition was passed already. */
2812 if (DECL_INLINE (newdecl) && DECL_INITIAL (olddecl) == NULL_TREE)
2813 DECL_INLINE (olddecl) = 1;
2814 DECL_INLINE (newdecl) = DECL_INLINE (olddecl);
2818 DECL_LANGUAGE (olddecl) = DECL_LANGUAGE (newdecl);
2819 DECL_ASSEMBLER_NAME (olddecl) = DECL_ASSEMBLER_NAME (newdecl);
2820 DECL_RTL (olddecl) = DECL_RTL (newdecl);
2822 if (! types_match || new_defines_function)
2824 /* These need to be copied so that the names are available. */
2825 DECL_ARGUMENTS (olddecl) = DECL_ARGUMENTS (newdecl);
2826 DECL_RESULT (olddecl) = DECL_RESULT (newdecl);
2828 if (new_defines_function)
2829 /* If defining a function declared with other language
2830 linkage, use the previously declared language linkage. */
2831 DECL_LANGUAGE (newdecl) = DECL_LANGUAGE (olddecl);
2834 /* If redeclaring a builtin function, and not a definition,
2835 it stays built in. */
2836 if (DECL_BUILT_IN (olddecl))
2838 DECL_BUILT_IN (newdecl) = 1;
2839 DECL_FUNCTION_CODE (newdecl) = DECL_FUNCTION_CODE (olddecl);
2840 /* If we're keeping the built-in definition, keep the rtl,
2841 regardless of declaration matches. */
2842 DECL_RTL (newdecl) = DECL_RTL (olddecl);
2845 DECL_FRAME_SIZE (newdecl) = DECL_FRAME_SIZE (olddecl);
2847 DECL_RESULT (newdecl) = DECL_RESULT (olddecl);
2848 if ((DECL_SAVED_INSNS (newdecl) = DECL_SAVED_INSNS (olddecl)))
2849 /* Previously saved insns go together with
2850 the function's previous definition. */
2851 DECL_INITIAL (newdecl) = DECL_INITIAL (olddecl);
2852 /* Don't clear out the arguments if we're redefining a function. */
2853 if (DECL_ARGUMENTS (olddecl))
2854 DECL_ARGUMENTS (newdecl) = DECL_ARGUMENTS (olddecl);
2856 if (DECL_LANG_SPECIFIC (olddecl))
2857 DECL_MAIN_VARIANT (newdecl) = DECL_MAIN_VARIANT (olddecl);
2860 if (TREE_CODE (newdecl) == NAMESPACE_DECL)
2862 NAMESPACE_LEVEL (newdecl) = NAMESPACE_LEVEL (olddecl);
2865 if (TREE_CODE (newdecl) == TEMPLATE_DECL)
2867 DECL_TEMPLATE_INSTANTIATIONS (newdecl)
2868 = DECL_TEMPLATE_INSTANTIATIONS (olddecl);
2869 if (DECL_CHAIN (newdecl) == NULL_TREE)
2870 DECL_CHAIN (newdecl) = DECL_CHAIN (olddecl);
2873 /* Now preserve various other info from the definition. */
2874 TREE_ADDRESSABLE (newdecl) = TREE_ADDRESSABLE (olddecl);
2875 TREE_ASM_WRITTEN (newdecl) = TREE_ASM_WRITTEN (olddecl);
2876 DECL_COMMON (newdecl) = DECL_COMMON (olddecl);
2877 DECL_ASSEMBLER_NAME (newdecl) = DECL_ASSEMBLER_NAME (olddecl);
2879 /* Don't really know how much of the language-specific
2880 values we should copy from old to new. */
2881 if (DECL_LANG_SPECIFIC (olddecl))
2883 DECL_IN_AGGR_P (newdecl) = DECL_IN_AGGR_P (olddecl);
2884 DECL_ACCESS (newdecl) = DECL_ACCESS (olddecl);
2885 DECL_NONCONVERTING_P (newdecl) = DECL_NONCONVERTING_P (olddecl);
2886 if (DECL_TEMPLATE_INFO (newdecl) == NULL_TREE)
2888 DECL_TEMPLATE_INFO (newdecl) = DECL_TEMPLATE_INFO (olddecl);
2889 DECL_USE_TEMPLATE (newdecl) = DECL_USE_TEMPLATE (olddecl);
2893 if (TREE_CODE (newdecl) == FUNCTION_DECL)
2896 struct lang_decl *ol = DECL_LANG_SPECIFIC (olddecl);
2897 struct lang_decl *nl = DECL_LANG_SPECIFIC (newdecl);
2899 function_size = sizeof (struct tree_decl);
2901 bcopy ((char *) newdecl + sizeof (struct tree_common),
2902 (char *) olddecl + sizeof (struct tree_common),
2903 function_size - sizeof (struct tree_common));
2905 /* Can we safely free the storage used by newdecl? */
2907 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
2908 & ~ obstack_alignment_mask (&permanent_obstack))
2910 if ((char *)newdecl + ROUND (function_size)
2911 + ROUND (sizeof (struct lang_decl))
2912 == obstack_next_free (&permanent_obstack))
2914 DECL_MAIN_VARIANT (newdecl) = olddecl;
2915 DECL_LANG_SPECIFIC (olddecl) = ol;
2916 bcopy ((char *)nl, (char *)ol, sizeof (struct lang_decl));
2918 obstack_free (&permanent_obstack, newdecl);
2920 else if (LANG_DECL_PERMANENT (ol))
2922 if (DECL_MAIN_VARIANT (olddecl) == olddecl)
2924 /* Save these lang_decls that would otherwise be lost. */
2925 extern tree free_lang_decl_chain;
2926 tree free_lang_decl = (tree) ol;
2927 TREE_CHAIN (free_lang_decl) = free_lang_decl_chain;
2928 free_lang_decl_chain = free_lang_decl;
2938 bcopy ((char *) newdecl + sizeof (struct tree_common),
2939 (char *) olddecl + sizeof (struct tree_common),
2940 sizeof (struct tree_decl) - sizeof (struct tree_common)
2941 + tree_code_length [(int)TREE_CODE (newdecl)] * sizeof (char *));
2944 DECL_UID (olddecl) = olddecl_uid;
2946 DECL_FRIEND_P (olddecl) = 1;
2951 /* Record a decl-node X as belonging to the current lexical scope.
2952 Check for errors (such as an incompatible declaration for the same
2953 name already seen in the same scope).
2955 Returns either X or an old decl for the same name.
2956 If an old decl is returned, it may have been smashed
2957 to agree with what X says. */
2964 register tree name = DECL_ASSEMBLER_NAME (x);
2965 register struct binding_level *b = current_binding_level;
2967 if (x != current_function_decl
2968 /* Don't change DECL_CONTEXT of virtual methods. */
2969 && (TREE_CODE (x) != FUNCTION_DECL || !DECL_VIRTUAL_P (x))
2970 && ! DECL_CONTEXT (x))
2971 DECL_CONTEXT (x) = current_function_decl;
2972 /* A local declaration for a function doesn't constitute nesting. */
2973 if (TREE_CODE (x) == FUNCTION_DECL && DECL_INITIAL (x) == 0)
2974 DECL_CONTEXT (x) = 0;
2976 /* Type are looked up using the DECL_NAME, as that is what the rest of the
2977 compiler wants to use. */
2978 if (TREE_CODE (x) == TYPE_DECL || TREE_CODE (x) == VAR_DECL
2979 || TREE_CODE (x) == NAMESPACE_DECL)
2980 name = DECL_NAME (x);
2985 /* Not needed...see below. */
2990 t = lookup_name_current_level (name);
2991 if (t == error_mark_node)
2993 /* error_mark_node is 0 for a while during initialization! */
2995 cp_error_at ("`%#D' used prior to declaration", x);
2998 else if (t != NULL_TREE)
3001 /* This is turned off until I have time to do it right (bpk). */
3002 /* With the code below that uses it... */
3003 file = DECL_SOURCE_FILE (t);
3004 line = DECL_SOURCE_LINE (t);
3006 if (TREE_CODE (t) == PARM_DECL)
3008 if (DECL_CONTEXT (t) == NULL_TREE)
3009 fatal ("parse errors have confused me too much");
3011 /* Check for duplicate params. */
3012 if (duplicate_decls (x, t))
3015 else if (((TREE_CODE (x) == FUNCTION_DECL && DECL_LANGUAGE (x) == lang_c)
3016 || DECL_FUNCTION_TEMPLATE_P (x))
3017 && is_overloaded_fn (t))
3018 /* don't do anything just yet */;
3019 else if (t == wchar_decl_node)
3021 if (pedantic && ! DECL_IN_SYSTEM_HEADER (x))
3022 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x));
3024 /* Throw away the redeclaration. */
3027 else if (TREE_CODE (t) != TREE_CODE (x))
3029 if ((TREE_CODE (t) == TYPE_DECL && DECL_ARTIFICIAL (t)
3030 && TREE_CODE (x) != TYPE_DECL
3031 && ! (TREE_CODE (x) == TEMPLATE_DECL
3032 && TREE_CODE (DECL_TEMPLATE_RESULT (x)) == TYPE_DECL))
3033 || (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3034 && TREE_CODE (t) != TYPE_DECL
3035 && ! (TREE_CODE (t) == TEMPLATE_DECL
3036 && (TREE_CODE (DECL_TEMPLATE_RESULT (t))
3039 /* We do nothing special here, because C++ does such nasty
3040 things with TYPE_DECLs. Instead, just let the TYPE_DECL
3041 get shadowed, and know that if we need to find a TYPE_DECL
3042 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
3043 slot of the identifier. */
3046 else if (duplicate_decls (x, t))
3049 else if (duplicate_decls (x, t))
3052 /* This is turned off until I have time to do it right (bpk). */
3054 /* Also warn if they did a prototype with `static' on it, but
3055 then later left the `static' off. */
3056 if (! TREE_PUBLIC (name) && TREE_PUBLIC (x))
3058 if (DECL_LANG_SPECIFIC (t) && DECL_FRIEND_P (t))
3063 cp_warning ("`static' missing from declaration of `%D'",
3065 warning_with_file_and_line (file, line,
3066 "previous declaration of `%s'",
3067 decl_as_string (t, 0));
3070 /* Now fix things so it'll do what they expect. */
3071 if (current_function_decl)
3072 TREE_PUBLIC (current_function_decl) = 0;
3074 /* Due to interference in memory reclamation (X may be
3075 obstack-deallocated at this point), we must guard against
3076 one really special case. [jason: This should be handled
3077 by start_function] */
3078 if (current_function_decl == x)
3079 current_function_decl = t;
3081 if (TREE_CODE (t) == TYPE_DECL)
3082 SET_IDENTIFIER_TYPE_VALUE (name, TREE_TYPE (t));
3083 else if (TREE_CODE (t) == FUNCTION_DECL)
3084 check_default_args (t);
3090 if (TREE_CODE (x) == FUNCTION_DECL && ! DECL_FUNCTION_MEMBER_P (x))
3092 t = push_overloaded_decl (x, 1);
3093 if (t != x || DECL_LANGUAGE (x) == lang_c)
3096 else if (DECL_FUNCTION_TEMPLATE_P (x) && DECL_CONTEXT (x) == NULL_TREE)
3097 return push_overloaded_decl (x, 0);
3099 /* If declaring a type as a typedef, and the type has no known
3100 typedef name, install this TYPE_DECL as its typedef name. */
3101 if (TREE_CODE (x) == TYPE_DECL)
3103 tree type = TREE_TYPE (x);
3104 tree name = (type != error_mark_node) ? TYPE_NAME (type) : x;
3106 if (name == NULL_TREE || TREE_CODE (name) != TYPE_DECL)
3108 /* If these are different names, and we're at the global
3109 binding level, make two equivalent definitions. */
3111 if (global_bindings_p ())
3112 TYPE_NAME (type) = x;
3116 tree tname = DECL_NAME (name);
3118 /* This is a disgusting kludge for dealing with UPTs. */
3119 if (global_bindings_p () && ANON_AGGRNAME_P (tname))
3121 /* do gratuitous C++ typedefing, and make sure that
3122 we access this type either through TREE_TYPE field
3123 or via the tags list. */
3124 TYPE_NAME (TREE_TYPE (x)) = x;
3125 pushtag (tname, TREE_TYPE (x), 0);
3128 my_friendly_assert (TREE_CODE (name) == TYPE_DECL, 140);
3130 if (type != error_mark_node
3132 && TYPE_IDENTIFIER (type))
3133 set_identifier_type_value_with_scope (DECL_NAME (x), type, b);
3136 /* Multiple external decls of the same identifier ought to match.
3138 We get warnings about inline functions where they are defined.
3139 We get warnings about other functions from push_overloaded_decl.
3141 Avoid duplicate warnings where they are used. */
3142 if (TREE_PUBLIC (x) && TREE_CODE (x) != FUNCTION_DECL)
3146 if (IDENTIFIER_GLOBAL_VALUE (name) != NULL_TREE
3147 && (DECL_EXTERNAL (IDENTIFIER_GLOBAL_VALUE (name))
3148 || TREE_PUBLIC (IDENTIFIER_GLOBAL_VALUE (name))))
3149 decl = IDENTIFIER_GLOBAL_VALUE (name);
3154 /* If different sort of thing, we already gave an error. */
3155 && TREE_CODE (decl) == TREE_CODE (x)
3156 && ! comptypes (TREE_TYPE (x), TREE_TYPE (decl), 1))
3158 cp_pedwarn ("type mismatch with previous external decl", x);
3159 cp_pedwarn_at ("previous external decl of `%#D'", decl);
3163 /* In PCC-compatibility mode, extern decls of vars with no current decl
3164 take effect at top level no matter where they are. */
3165 if (flag_traditional && DECL_EXTERNAL (x)
3166 && lookup_name (name, 0) == NULL_TREE)
3167 b = global_binding_level;
3169 /* This name is new in its binding level.
3170 Install the new declaration and return it. */
3171 if (b == global_binding_level)
3173 /* Install a global value. */
3175 /* If the first global decl has external linkage,
3176 warn if we later see static one. */
3177 if (IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE && DECL_PUBLIC (x))
3178 TREE_PUBLIC (name) = 1;
3180 /* Don't install an artificial TYPE_DECL if we already have
3181 another _DECL with that name. */
3182 if (TREE_CODE (x) != TYPE_DECL
3184 || ! DECL_ARTIFICIAL (x))
3185 IDENTIFIER_GLOBAL_VALUE (name) = x;
3187 /* Don't forget if the function was used via an implicit decl. */
3188 if (IDENTIFIER_IMPLICIT_DECL (name)
3189 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name)))
3192 /* Don't forget if its address was taken in that way. */
3193 if (IDENTIFIER_IMPLICIT_DECL (name)
3194 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name)))
3195 TREE_ADDRESSABLE (x) = 1;
3197 /* Warn about mismatches against previous implicit decl. */
3198 if (IDENTIFIER_IMPLICIT_DECL (name) != NULL_TREE
3199 /* If this real decl matches the implicit, don't complain. */
3200 && ! (TREE_CODE (x) == FUNCTION_DECL
3201 && TREE_TYPE (TREE_TYPE (x)) == integer_type_node))
3203 ("`%D' was previously implicitly declared to return `int'", x);
3205 /* If new decl is `static' and an `extern' was seen previously,
3207 if (x != NULL_TREE && t != NULL_TREE && decls_match (x, t))
3208 warn_extern_redeclared_static (x, t);
3212 /* Here to install a non-global value. */
3213 tree oldlocal = IDENTIFIER_LOCAL_VALUE (name);
3214 tree oldglobal = IDENTIFIER_GLOBAL_VALUE (name);
3216 /* Don't install an artificial TYPE_DECL if we already have
3217 another _DECL with that name. */
3218 if (TREE_CODE (x) != TYPE_DECL
3220 || ! DECL_ARTIFICIAL (x))
3222 b->shadowed = tree_cons (name, oldlocal, b->shadowed);
3223 IDENTIFIER_LOCAL_VALUE (name) = x;
3226 /* If this is a TYPE_DECL, push it into the type value slot. */
3227 if (TREE_CODE (x) == TYPE_DECL)
3228 set_identifier_type_value_with_scope (name, TREE_TYPE (x), b);
3230 /* Clear out any TYPE_DECL shadowed by a namespace so that
3231 we won't think this is a type. The C struct hack doesn't
3232 go through namespaces. */
3233 if (TREE_CODE (x) == NAMESPACE_DECL)
3234 set_identifier_type_value_with_scope (name, NULL_TREE, b);
3236 /* If this is an extern function declaration, see if we
3237 have a global definition or declaration for the function. */
3238 if (oldlocal == NULL_TREE
3239 && DECL_EXTERNAL (x)
3240 && oldglobal != NULL_TREE
3241 && TREE_CODE (x) == FUNCTION_DECL
3242 && TREE_CODE (oldglobal) == FUNCTION_DECL)
3244 /* We have one. Their types must agree. */
3245 if (decls_match (x, oldglobal))
3249 cp_warning ("extern declaration of `%#D' doesn't match", x);
3250 cp_warning_at ("global declaration `%#D'", oldglobal);
3253 /* If we have a local external declaration,
3254 and no file-scope declaration has yet been seen,
3255 then if we later have a file-scope decl it must not be static. */
3256 if (oldlocal == NULL_TREE
3257 && oldglobal == NULL_TREE
3258 && DECL_EXTERNAL (x)
3261 TREE_PUBLIC (name) = 1;
3264 if (DECL_FROM_INLINE (x))
3265 /* Inline decls shadow nothing. */;
3267 /* Warn if shadowing an argument at the top level of the body. */
3268 else if (oldlocal != NULL_TREE && !DECL_EXTERNAL (x)
3269 && TREE_CODE (oldlocal) == PARM_DECL
3270 && TREE_CODE (x) != PARM_DECL)
3272 /* Go to where the parms should be and see if we
3274 struct binding_level *b = current_binding_level->level_chain;
3280 if (b->parm_flag == 1)
3281 cp_error ("declaration of `%#D' shadows a parameter", name);
3283 else if (warn_shadow && oldlocal != NULL_TREE && b->is_for_scope
3284 && !DECL_DEAD_FOR_LOCAL (oldlocal))
3286 warning ("variable `%s' shadows local",
3287 IDENTIFIER_POINTER (name));
3288 cp_warning_at (" this is the shadowed declaration", oldlocal);
3290 /* Maybe warn if shadowing something else. */
3291 else if (warn_shadow && !DECL_EXTERNAL (x)
3292 /* No shadow warnings for internally generated vars. */
3293 && ! DECL_ARTIFICIAL (x)
3294 /* No shadow warnings for vars made for inlining. */
3295 && ! DECL_FROM_INLINE (x))
3297 char *warnstring = NULL;
3299 if (oldlocal != NULL_TREE && TREE_CODE (oldlocal) == PARM_DECL)
3300 warnstring = "declaration of `%s' shadows a parameter";
3301 else if (IDENTIFIER_CLASS_VALUE (name) != NULL_TREE
3302 && current_class_ptr
3303 && !TREE_STATIC (name))
3304 warnstring = "declaration of `%s' shadows a member of `this'";
3305 else if (oldlocal != NULL_TREE)
3306 warnstring = "declaration of `%s' shadows previous local";
3307 else if (oldglobal != NULL_TREE)
3308 warnstring = "declaration of `%s' shadows global declaration";
3311 warning (warnstring, IDENTIFIER_POINTER (name));
3315 if (TREE_CODE (x) == FUNCTION_DECL)
3316 check_default_args (x);
3318 /* Keep count of variables in this level with incomplete type. */
3319 if (TREE_CODE (x) == VAR_DECL
3320 && TREE_TYPE (x) != error_mark_node
3321 && ((TYPE_SIZE (TREE_TYPE (x)) == NULL_TREE
3322 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x), ARRAY_TYPE))
3323 /* RTTI TD entries are created while defining the type_info. */
3324 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x))
3325 && TYPE_BEING_DEFINED (TREE_TYPE (x)))))
3326 b->incomplete = tree_cons (NULL_TREE, x, b->incomplete);
3329 /* Put decls on list in reverse order.
3330 We will reverse them later if necessary. */
3331 TREE_CHAIN (x) = b->names;
3333 if (! (b != global_binding_level || TREE_PERMANENT (x)))
3334 my_friendly_abort (124);
3339 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3340 caller to set DECL_CONTEXT properly. */
3343 pushdecl_with_scope (x, level)
3345 struct binding_level *level;
3347 register struct binding_level *b = current_binding_level;
3348 tree function_decl = current_function_decl;
3350 current_function_decl = NULL_TREE;
3351 current_binding_level = level;
3353 current_binding_level = b;
3354 current_function_decl = function_decl;
3358 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3362 pushdecl_top_level (x)
3365 register struct binding_level *b = inner_binding_level;
3366 register tree t = pushdecl_with_scope (x, global_binding_level);
3368 /* Now, the type_shadowed stack may screw us. Munge it so it does
3370 if (TREE_CODE (x) == TYPE_DECL)
3372 tree name = DECL_NAME (x);
3374 tree *ptr = (tree *)0;
3375 for (; b != global_binding_level; b = b->level_chain)
3377 tree shadowed = b->type_shadowed;
3378 for (; shadowed; shadowed = TREE_CHAIN (shadowed))
3379 if (TREE_PURPOSE (shadowed) == name)
3381 ptr = &TREE_VALUE (shadowed);
3382 /* Can't break out of the loop here because sometimes
3383 a binding level will have duplicate bindings for
3384 PT names. It's gross, but I haven't time to fix it. */
3387 newval = TREE_TYPE (x);
3388 if (ptr == (tree *)0)
3390 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3391 up here if this is changed to an assertion. --KR */
3392 SET_IDENTIFIER_TYPE_VALUE (name, newval);
3402 /* Like push_overloaded_decl, only it places X in GLOBAL_BINDING_LEVEL,
3406 push_overloaded_decl_top_level (x, forget)
3410 struct binding_level *b = current_binding_level;
3412 current_binding_level = global_binding_level;
3413 push_overloaded_decl (x, forget);
3414 current_binding_level = b;
3417 /* Make the declaration of X appear in CLASS scope. */
3420 pushdecl_class_level (x)
3423 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3424 scope looks for the pre-mangled name. */
3425 register tree name = DECL_NAME (x);
3429 if (TYPE_BEING_DEFINED (current_class_type))
3431 /* Check for inconsistent use of this name in the class body.
3432 Types, enums, and static vars are checked here; other
3433 members are checked in finish_struct. */
3434 tree icv = IDENTIFIER_CLASS_VALUE (name);
3437 /* Don't complain about inherited names. */
3438 && id_in_current_class (name)
3439 /* Or shadowed tags. */
3440 && !(TREE_CODE (icv) == TYPE_DECL
3441 && DECL_CONTEXT (icv) == current_class_type))
3443 cp_error ("declaration of identifier `%D' as `%#D'", name, x);
3444 cp_error_at ("conflicts with previous use in class as `%#D'",
3449 push_class_level_binding (name, x);
3450 if (TREE_CODE (x) == TYPE_DECL)
3452 set_identifier_type_value (name, TREE_TYPE (x));
3458 /* This function is used to push the mangled decls for nested types into
3459 the appropriate scope. Previously pushdecl_top_level was used, but that
3460 is incorrect for members of local classes. */
3463 pushdecl_nonclass_level (x)
3466 struct binding_level *b = current_binding_level;
3468 my_friendly_assert (b->parm_flag != 2, 180);
3471 /* Get out of template binding levels */
3472 while (b->pseudo_global)
3476 pushdecl_with_scope (x, b);
3479 /* Make the declaration(s) of X appear in CLASS scope
3480 under the name NAME. */
3483 push_class_level_binding (name, x)
3487 if (TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)
3488 && purpose_member (name, class_binding_level->class_shadowed))
3491 maybe_push_cache_obstack ();
3492 class_binding_level->class_shadowed
3493 = tree_cons (name, IDENTIFIER_CLASS_VALUE (name),
3494 class_binding_level->class_shadowed);
3496 IDENTIFIER_CLASS_VALUE (name) = x;
3497 obstack_ptr_grow (&decl_obstack, x);
3500 /* Tell caller how to interpret a TREE_LIST which contains
3501 chains of FUNCTION_DECLS. */
3504 overloaded_globals_p (list)
3507 my_friendly_assert (TREE_CODE (list) == TREE_LIST, 142);
3509 /* Don't commit caller to seeing them as globals. */
3510 if (TREE_NONLOCAL_FLAG (list))
3512 /* Do commit caller to not seeing them as globals. */
3513 if (TREE_CODE (TREE_VALUE (list)) == TREE_LIST)
3515 /* Do commit caller to seeing them as globals. */
3519 /* DECL is a FUNCTION_DECL which may have other definitions already in
3520 place. We get around this by making the value of the identifier point
3521 to a list of all the things that want to be referenced by that name. It
3522 is then up to the users of that name to decide what to do with that
3525 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3526 slot. It is dealt with the same way.
3528 The value returned may be a previous declaration if we guessed wrong
3529 about what language DECL should belong to (C or C++). Otherwise,
3530 it's always DECL (and never something that's not a _DECL). */
3533 push_overloaded_decl (decl, forgettable)
3537 tree orig_name = DECL_NAME (decl);
3539 int doing_global = (global_bindings_p () || ! forgettable);
3543 old = IDENTIFIER_GLOBAL_VALUE (orig_name);
3544 if (old && TREE_CODE (old) == FUNCTION_DECL
3545 && DECL_ARTIFICIAL (old)
3546 && (DECL_BUILT_IN (old) || DECL_BUILT_IN_NONANSI (old)))
3548 if (duplicate_decls (decl, old))
3555 old = IDENTIFIER_LOCAL_VALUE (orig_name);
3557 if (! purpose_member (orig_name, current_binding_level->shadowed))
3559 current_binding_level->shadowed
3560 = tree_cons (orig_name, old, current_binding_level->shadowed);
3567 if (TREE_CODE (old) == TYPE_DECL && DECL_ARTIFICIAL (old))
3569 tree t = TREE_TYPE (old);
3570 if (IS_AGGR_TYPE (t) && warn_shadow
3571 && (! DECL_IN_SYSTEM_HEADER (decl)
3572 || ! DECL_IN_SYSTEM_HEADER (old)))
3573 cp_warning ("`%#D' hides constructor for `%#T'", decl, t);
3576 else if (is_overloaded_fn (old))
3580 for (tmp = get_first_fn (old); tmp; tmp = DECL_CHAIN (tmp))
3581 if (decl == tmp || duplicate_decls (decl, tmp))
3586 cp_error_at ("previous non-function declaration `%#D'", old);
3587 cp_error ("conflicts with function declaration `%#D'", decl);
3592 if (old || TREE_CODE (decl) == TEMPLATE_DECL)
3594 if (old && is_overloaded_fn (old))
3595 DECL_CHAIN (decl) = get_first_fn (old);
3597 DECL_CHAIN (decl) = NULL_TREE;
3598 old = tree_cons (orig_name, decl, NULL_TREE);
3599 TREE_TYPE (old) = unknown_type_node;
3602 /* orig_name is not ambiguous. */
3606 IDENTIFIER_GLOBAL_VALUE (orig_name) = old;
3608 IDENTIFIER_LOCAL_VALUE (orig_name) = old;
3613 /* Generate an implicit declaration for identifier FUNCTIONID
3614 as a function of type int (). Print a warning if appropriate. */
3617 implicitly_declare (functionid)
3621 int temp = allocation_temporary_p ();
3623 push_obstacks_nochange ();
3625 /* Save the decl permanently so we can warn if definition follows.
3626 In ANSI C, warn_implicit is usually false, so the saves little space.
3627 But in C++, it's usually true, hence the extra code. */
3628 if (temp && (flag_traditional || !warn_implicit || toplevel_bindings_p ()))
3629 end_temporary_allocation ();
3631 /* We used to reuse an old implicit decl here,
3632 but this loses with inline functions because it can clobber
3633 the saved decl chains. */
3634 decl = build_lang_decl (FUNCTION_DECL, functionid, default_function_type);
3636 DECL_EXTERNAL (decl) = 1;
3637 TREE_PUBLIC (decl) = 1;
3639 /* ANSI standard says implicit declarations are in the innermost block.
3640 So we record the decl in the standard fashion.
3641 If flag_traditional is set, pushdecl does it top-level. */
3643 rest_of_decl_compilation (decl, NULL_PTR, 0, 0);
3646 /* Only one warning per identifier. */
3647 && IDENTIFIER_IMPLICIT_DECL (functionid) == NULL_TREE)
3649 cp_pedwarn ("implicit declaration of function `%#D'", decl);
3652 SET_IDENTIFIER_IMPLICIT_DECL (functionid, decl);
3659 /* Return zero if the declaration NEWDECL is valid
3660 when the declaration OLDDECL (assumed to be for the same name)
3661 has already been seen.
3662 Otherwise return an error message format string with a %s
3663 where the identifier should go. */
3666 redeclaration_error_message (newdecl, olddecl)
3667 tree newdecl, olddecl;
3669 if (TREE_CODE (newdecl) == TYPE_DECL)
3671 /* Because C++ can put things into name space for free,
3672 constructs like "typedef struct foo { ... } foo"
3673 would look like an erroneous redeclaration. */
3674 if (comptypes (TREE_TYPE (newdecl), TREE_TYPE (olddecl), 0))
3677 return "redefinition of `%#D'";
3679 else if (TREE_CODE (newdecl) == FUNCTION_DECL)
3681 /* If this is a pure function, its olddecl will actually be
3682 the original initialization to `0' (which we force to call
3683 abort()). Don't complain about redefinition in this case. */
3684 if (DECL_LANG_SPECIFIC (olddecl) && DECL_ABSTRACT_VIRTUAL_P (olddecl))
3687 /* We'll complain about linkage mismatches in
3688 warn_extern_redeclared_static. */
3690 /* defining the same name twice is no good. */
3691 if (DECL_INITIAL (olddecl) != NULL_TREE
3692 && DECL_INITIAL (newdecl) != NULL_TREE)
3694 if (DECL_NAME (olddecl) == NULL_TREE)
3695 return "`%#D' not declared in class";
3697 return "redefinition of `%#D'";
3701 else if (TREE_CODE (newdecl) == TEMPLATE_DECL)
3703 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == FUNCTION_DECL
3704 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl))
3705 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl)))
3706 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl)) == TYPE_DECL
3707 && TYPE_SIZE (TREE_TYPE (newdecl))
3708 && TYPE_SIZE (TREE_TYPE (olddecl))))
3709 return "redefinition of `%#D'";
3712 else if (toplevel_bindings_p ())
3714 /* Objects declared at top level: */
3715 /* If at least one is a reference, it's ok. */
3716 if (DECL_EXTERNAL (newdecl) || DECL_EXTERNAL (olddecl))
3718 /* Reject two definitions. */
3719 return "redefinition of `%#D'";
3723 /* Objects declared with block scope: */
3724 /* Reject two definitions, and reject a definition
3725 together with an external reference. */
3726 if (!(DECL_EXTERNAL (newdecl) && DECL_EXTERNAL (olddecl)))
3727 return "redeclaration of `%#D'";
3732 /* Get the LABEL_DECL corresponding to identifier ID as a label.
3733 Create one if none exists so far for the current function.
3734 This function is called for both label definitions and label references. */
3740 register tree decl = IDENTIFIER_LABEL_VALUE (id);
3742 if (current_function_decl == NULL_TREE)
3744 error ("label `%s' referenced outside of any function",
3745 IDENTIFIER_POINTER (id));
3749 if ((decl == NULL_TREE
3750 || DECL_SOURCE_LINE (decl) == 0)
3751 && (named_label_uses == NULL
3752 || named_label_uses->names_in_scope != current_binding_level->names
3753 || named_label_uses->label_decl != decl))
3755 struct named_label_list *new_ent;
3757 = (struct named_label_list*)oballoc (sizeof (struct named_label_list));
3758 new_ent->label_decl = decl;
3759 new_ent->names_in_scope = current_binding_level->names;
3760 new_ent->binding_level = current_binding_level;
3761 new_ent->lineno_o_goto = lineno;
3762 new_ent->filename_o_goto = input_filename;
3763 new_ent->next = named_label_uses;
3764 named_label_uses = new_ent;
3767 /* Use a label already defined or ref'd with this name. */
3768 if (decl != NULL_TREE)
3770 /* But not if it is inherited and wasn't declared to be inheritable. */
3771 if (DECL_CONTEXT (decl) != current_function_decl
3772 && ! C_DECLARED_LABEL_FLAG (decl))
3773 return shadow_label (id);
3777 decl = build_decl (LABEL_DECL, id, void_type_node);
3779 /* Make sure every label has an rtx. */
3782 /* A label not explicitly declared must be local to where it's ref'd. */
3783 DECL_CONTEXT (decl) = current_function_decl;
3785 DECL_MODE (decl) = VOIDmode;
3787 /* Say where one reference is to the label,
3788 for the sake of the error if it is not defined. */
3789 DECL_SOURCE_LINE (decl) = lineno;
3790 DECL_SOURCE_FILE (decl) = input_filename;
3792 SET_IDENTIFIER_LABEL_VALUE (id, decl);
3794 named_labels = tree_cons (NULL_TREE, decl, named_labels);
3795 named_label_uses->label_decl = decl;
3800 /* Make a label named NAME in the current function,
3801 shadowing silently any that may be inherited from containing functions
3802 or containing scopes.
3804 Note that valid use, if the label being shadowed
3805 comes from another scope in the same function,
3806 requires calling declare_nonlocal_label right away. */
3812 register tree decl = IDENTIFIER_LABEL_VALUE (name);
3814 if (decl != NULL_TREE)
3816 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
3817 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
3818 SET_IDENTIFIER_LABEL_VALUE (decl, NULL_TREE);
3821 return lookup_label (name);
3824 /* Define a label, specifying the location in the source file.
3825 Return the LABEL_DECL node for the label, if the definition is valid.
3826 Otherwise return 0. */
3829 define_label (filename, line, name)
3836 if (minimal_parse_mode)
3838 push_obstacks (&permanent_obstack, &permanent_obstack);
3839 decl = build_decl (LABEL_DECL, name, void_type_node);
3841 DECL_SOURCE_LINE (decl) = line;
3842 DECL_SOURCE_FILE (decl) = filename;
3847 decl = lookup_label (name);
3849 /* After labels, make any new cleanups go into their
3850 own new (temporary) binding contour. */
3851 current_binding_level->more_cleanups_ok = 0;
3853 /* If label with this name is known from an outer context, shadow it. */
3854 if (decl != NULL_TREE && DECL_CONTEXT (decl) != current_function_decl)
3856 shadowed_labels = tree_cons (NULL_TREE, decl, shadowed_labels);
3857 SET_IDENTIFIER_LABEL_VALUE (name, NULL_TREE);
3858 decl = lookup_label (name);
3861 if (name == get_identifier ("wchar_t"))
3862 cp_pedwarn ("label named wchar_t");
3864 if (DECL_INITIAL (decl) != NULL_TREE)
3866 cp_error ("duplicate label `%D'", decl);
3871 struct named_label_list *uses, *prev;
3874 /* Mark label as having been defined. */
3875 DECL_INITIAL (decl) = error_mark_node;
3876 /* Say where in the source. */
3877 DECL_SOURCE_FILE (decl) = filename;
3878 DECL_SOURCE_LINE (decl) = line;
3881 uses = named_label_uses;
3882 while (uses != NULL)
3883 if (uses->label_decl == decl)
3885 struct binding_level *b = current_binding_level;
3888 tree new_decls = b->names;
3889 tree old_decls = (b == uses->binding_level)
3890 ? uses->names_in_scope : NULL_TREE;
3891 while (new_decls != old_decls)
3893 if (TREE_CODE (new_decls) == VAR_DECL
3894 /* Don't complain about crossing initialization
3895 of internal entities. They can't be accessed,
3896 and they should be cleaned up
3897 by the time we get to the label. */
3898 && ! DECL_ARTIFICIAL (new_decls)
3899 && ((DECL_INITIAL (new_decls) != NULL_TREE
3900 && DECL_INITIAL (new_decls) != error_mark_node)
3901 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
3905 cp_error ("jump to label `%D'", decl);
3906 error_with_file_and_line (uses->filename_o_goto,
3907 uses->lineno_o_goto,
3911 cp_error_at (" crosses initialization of `%#D'",
3914 new_decls = TREE_CHAIN (new_decls);
3916 if (b == uses->binding_level)
3922 prev->next = uses->next;
3924 named_label_uses = uses->next;
3933 current_function_return_value = NULL_TREE;
3940 struct binding_level *level;
3941 struct cp_switch *next;
3944 static struct cp_switch *switch_stack;
3950 = (struct cp_switch *) oballoc (sizeof (struct cp_switch));
3951 p->level = current_binding_level;
3952 p->next = switch_stack;
3959 switch_stack = switch_stack->next;
3962 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
3963 /* XXX Note decl is never actually used. (bpk) */
3966 define_case_label (decl)
3969 tree cleanup = last_cleanup_this_contour ();
3970 struct binding_level *b = current_binding_level;
3975 static int explained = 0;
3976 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup));
3977 warning ("where case label appears here");
3980 warning ("(enclose actions of previous case statements requiring");
3981 warning ("destructors in their own binding contours.)");
3986 for (; b && b != switch_stack->level; b = b->level_chain)
3988 tree new_decls = b->names;
3989 for (; new_decls; new_decls = TREE_CHAIN (new_decls))
3991 if (TREE_CODE (new_decls) == VAR_DECL
3992 /* Don't complain about crossing initialization
3993 of internal entities. They can't be accessed,
3994 and they should be cleaned up
3995 by the time we get to the label. */
3996 && ! DECL_ARTIFICIAL (new_decls)
3997 && ((DECL_INITIAL (new_decls) != NULL_TREE
3998 && DECL_INITIAL (new_decls) != error_mark_node)
3999 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls))))
4002 error ("jump to case label");
4004 cp_error_at (" crosses initialization of `%#D'",
4010 /* After labels, make any new cleanups go into their
4011 own new (temporary) binding contour. */
4013 current_binding_level->more_cleanups_ok = 0;
4014 current_function_return_value = NULL_TREE;
4017 /* Return the list of declarations of the current level.
4018 Note that this list is in reverse order unless/until
4019 you nreverse it; and when you do nreverse it, you must
4020 store the result back using `storedecls' or you will lose. */
4025 return current_binding_level->names;
4028 /* Return the list of type-tags (for structs, etc) of the current level. */
4033 return current_binding_level->tags;
4036 /* Store the list of declarations of the current level.
4037 This is done for the parameter declarations of a function being defined,
4038 after they are modified in the light of any missing parameters. */
4044 current_binding_level->names = decls;
4047 /* Similarly, store the list of tags of the current level. */
4053 current_binding_level->tags = tags;
4056 /* Given NAME, an IDENTIFIER_NODE,
4057 return the structure (or union or enum) definition for that name.
4058 Searches binding levels from BINDING_LEVEL up to the global level.
4059 If THISLEVEL_ONLY is nonzero, searches only the specified context
4060 (but skips any tag-transparent contexts to find one that is
4061 meaningful for tags).
4062 FORM says which kind of type the caller wants;
4063 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4064 If the wrong kind of type is found, and it's not a template, an error is
4068 lookup_tag (form, name, binding_level, thislevel_only)
4069 enum tree_code form;
4071 struct binding_level *binding_level;
4074 register struct binding_level *level;
4076 for (level = binding_level; level; level = level->level_chain)
4079 if (ANON_AGGRNAME_P (name))
4080 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4082 /* There's no need for error checking here, because
4083 anon names are unique throughout the compilation. */
4084 if (TYPE_IDENTIFIER (TREE_VALUE (tail)) == name)
4085 return TREE_VALUE (tail);
4088 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4090 if (TREE_PURPOSE (tail) == name)
4092 enum tree_code code = TREE_CODE (TREE_VALUE (tail));
4093 /* Should tighten this up; it'll probably permit
4094 UNION_TYPE and a struct template, for example. */
4096 && !(form != ENUMERAL_TYPE && code == TEMPLATE_DECL))
4098 /* Definition isn't the kind we were looking for. */
4099 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail),
4103 return TREE_VALUE (tail);
4106 if (thislevel_only && ! level->tag_transparent)
4108 if (level->pseudo_global)
4110 tree t = IDENTIFIER_GLOBAL_VALUE (name);
4111 if (t && TREE_CODE (t) == TEMPLATE_DECL
4112 && TREE_CODE (DECL_TEMPLATE_RESULT (t)) == TYPE_DECL)
4113 return TREE_TYPE (t);
4117 if (current_class_type && level->level_chain == global_binding_level)
4119 /* Try looking in this class's tags before heading into
4120 global binding level. */
4121 tree context = current_class_type;
4124 switch (TREE_CODE_CLASS (TREE_CODE (context)))
4128 these_tags = CLASSTYPE_TAGS (context);
4129 if (ANON_AGGRNAME_P (name))
4132 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags))
4134 return TREE_VALUE (tail);
4135 these_tags = TREE_CHAIN (these_tags);
4140 if (TREE_PURPOSE (these_tags) == name)
4142 if (TREE_CODE (TREE_VALUE (these_tags)) != form)
4144 cp_error ("`%#D' redeclared as %C in class scope",
4145 TREE_VALUE (tail), form);
4148 return TREE_VALUE (tail);
4150 these_tags = TREE_CHAIN (these_tags);
4152 /* If this type is not yet complete, then don't
4153 look at its context. */
4154 if (TYPE_SIZE (context) == NULL_TREE)
4156 /* Go to next enclosing type, if any. */
4157 context = DECL_CONTEXT (TYPE_NAME (context));
4160 context = DECL_CONTEXT (context);
4163 my_friendly_abort (10);
4175 set_current_level_tags_transparency (tags_transparent)
4176 int tags_transparent;
4178 current_binding_level->tag_transparent = tags_transparent;
4181 /* Given a type, find the tag that was defined for it and return the tag name.
4182 Otherwise return 0. However, the value can never be 0
4183 in the cases in which this is used.
4185 C++: If NAME is non-zero, this is the new name to install. This is
4186 done when replacing anonymous tags with real tag names. */
4189 lookup_tag_reverse (type, name)
4193 register struct binding_level *level;
4195 for (level = current_binding_level; level; level = level->level_chain)
4198 for (tail = level->tags; tail; tail = TREE_CHAIN (tail))
4200 if (TREE_VALUE (tail) == type)
4203 TREE_PURPOSE (tail) = name;
4204 return TREE_PURPOSE (tail);
4211 /* Given type TYPE which was not declared in C++ language context,
4212 attempt to find a name by which it is referred. */
4215 typedecl_for_tag (tag)
4218 struct binding_level *b = current_binding_level;
4220 if (TREE_CODE (TYPE_NAME (tag)) == TYPE_DECL)
4221 return TYPE_NAME (tag);
4225 tree decls = b->names;
4228 if (TREE_CODE (decls) == TYPE_DECL && TREE_TYPE (decls) == tag)
4230 decls = TREE_CHAIN (decls);
4239 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4240 Return the type value, or NULL_TREE if not found. */
4243 lookup_nested_type (type, context)
4247 if (context == NULL_TREE)
4251 switch (TREE_CODE (context))
4255 tree ctype = TREE_TYPE (context);
4256 tree match = value_member (type, CLASSTYPE_TAGS (ctype));
4258 return TREE_VALUE (match);
4259 context = DECL_CONTEXT (context);
4261 /* When we have a nested class whose member functions have
4262 local types (e.g., a set of enums), we'll arrive here
4263 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4264 the enclosing class. Instead, we want to make sure we
4265 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4266 if (context && TREE_CODE (context) == RECORD_TYPE)
4267 context = TREE_CHAIN (context);
4271 if (TYPE_NAME (type) && TYPE_IDENTIFIER (type))
4272 return lookup_name (TYPE_IDENTIFIER (type), 1);
4275 my_friendly_abort (12);
4281 /* Look up NAME in the NAMESPACE. */
4284 lookup_namespace_name (namespace, name)
4285 tree namespace, name;
4287 struct binding_level *b = (struct binding_level *)NAMESPACE_LEVEL (namespace);
4291 /* This searches just one level. */
4294 for (x = b->names; x; x = TREE_CHAIN (x))
4295 if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name)
4299 /* This searches all levels. */
4300 for (; b && !x; b = b->level_chain)
4302 for (x = b->names; x; x = TREE_CHAIN (x))
4303 if (DECL_NAME (x) == name || DECL_ASSEMBLER_NAME (x) == name)
4311 make_typename_type (context, name)
4316 if (TREE_CODE (name) == TYPE_DECL)
4317 name = DECL_NAME (name);
4318 else if (TREE_CODE (name) != IDENTIFIER_NODE)
4319 my_friendly_abort (2000);
4321 if (! processing_template_decl
4322 || ! uses_template_parms (context)
4323 || context == current_class_type)
4325 t = lookup_field (context, name, 0, 1);
4328 cp_error ("no type named `%#T' in `%#T'", name, context);
4329 return error_mark_node;
4331 return TREE_TYPE (t);
4334 if (processing_template_decl)
4335 push_obstacks (&permanent_obstack, &permanent_obstack);
4336 t = make_lang_type (TYPENAME_TYPE);
4337 d = build_decl (TYPE_DECL, name, t);
4338 if (processing_template_decl)
4341 TYPE_CONTEXT (t) = context;
4342 TYPE_MAIN_DECL (TREE_TYPE (d)) = d;
4343 DECL_CONTEXT (d) = context;
4344 CLASSTYPE_GOT_SEMICOLON (t) = 1;
4349 /* Look up NAME in the current binding level and its superiors in the
4350 namespace of variables, functions and typedefs. Return a ..._DECL
4351 node of some kind representing its definition if there is only one
4352 such declaration, or return a TREE_LIST with all the overloaded
4353 definitions if there are many, or return 0 if it is undefined.
4355 If PREFER_TYPE is > 0, we prefer TYPE_DECLs.
4356 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4357 Otherwise we prefer non-TYPE_DECLs. */
4360 lookup_name_real (name, prefer_type, nonclass)
4362 int prefer_type, nonclass;
4366 tree from_obj = NULL_TREE;
4367 tree locval, classval;
4369 if (prefer_type == -2)
4371 extern int looking_for_typename;
4372 tree type = NULL_TREE;
4375 prefer_type = looking_for_typename;
4379 else if (got_object != error_mark_node)
4384 if (type == error_mark_node)
4385 return error_mark_node;
4386 if (TREE_CODE (type) == TYPENAME_TYPE && TREE_TYPE (type))
4387 type = TREE_TYPE (type);
4389 type = complete_type (type);
4391 if (type == void_type_node)
4392 val = IDENTIFIER_GLOBAL_VALUE (name);
4393 else if (TREE_CODE (type) == NAMESPACE_DECL)
4395 val = lookup_namespace_name (type, name);
4397 else if (! IS_AGGR_TYPE (type)
4398 || TREE_CODE (type) == TEMPLATE_TYPE_PARM
4399 || TREE_CODE (type) == TYPENAME_TYPE)
4400 /* Someone else will give an error about this if needed. */
4402 else if (TYPE_BEING_DEFINED (type))
4404 val = IDENTIFIER_CLASS_VALUE (name);
4405 if (val && DECL_CONTEXT (val) != type)
4407 struct binding_level *b = class_binding_level;
4408 for (val = NULL_TREE; b; b = b->level_chain)
4410 tree t = purpose_member (name, b->class_shadowed);
4411 if (t && TREE_VALUE (t)
4412 && DECL_CONTEXT (TREE_VALUE (t)) == type)
4414 val = TREE_VALUE (t);
4419 if (val == NULL_TREE)
4420 val = lookup_field (type, name, 0, 1);
4422 else if (type == current_class_type)
4423 val = IDENTIFIER_CLASS_VALUE (name);
4425 val = lookup_field (type, name, 0, prefer_type);
4431 if (got_scope && processing_template_decl
4432 && got_scope != current_class_type
4433 && uses_template_parms (got_scope)
4434 && val && TREE_CODE (val) == TYPE_DECL
4435 && ! DECL_ARTIFICIAL (val))
4437 tree t = make_typename_type (got_scope, DECL_NAME (val));
4438 TREE_TYPE (t) = TREE_TYPE (val);
4439 val = TYPE_MAIN_DECL (t);
4445 else if (got_object && val)
4449 locval = classval = NULL_TREE;
4451 if (current_binding_level != global_binding_level
4452 && IDENTIFIER_LOCAL_VALUE (name))
4453 locval = IDENTIFIER_LOCAL_VALUE (name);
4455 /* In C++ class fields are between local and global scope,
4456 just before the global scope. */
4457 if (current_class_type && ! nonclass)
4459 classval = IDENTIFIER_CLASS_VALUE (name);
4460 if (classval == NULL_TREE && TYPE_BEING_DEFINED (current_class_type))
4461 /* Try to find values from base classes if we are presently
4462 defining a type. We are presently only interested in
4464 classval = lookup_field (current_class_type, name, 0, 1);
4466 /* yylex() calls this with -2, since we should never start digging for
4467 the nested name at the point where we haven't even, for example,
4468 created the COMPONENT_REF or anything like that. */
4469 if (classval == NULL_TREE)
4470 classval = lookup_nested_field (name, ! yylex);
4473 if (locval && classval)
4475 if (current_scope () == current_function_decl
4476 && ! hack_decl_function_context (current_function_decl))
4477 /* Not in a nested function. */
4481 /* This is incredibly horrible. The whole concept of
4482 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
4483 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
4485 tree lctx = hack_decl_function_context (locval);
4486 tree cctx = hack_decl_function_context (classval);
4488 if (lctx == current_scope ())
4490 else if (lctx == cctx)
4493 /* I don't know which is right; let's just guess for now. */
4502 val = IDENTIFIER_GLOBAL_VALUE (name);
4507 /* This should only warn about types used in qualified-ids. */
4508 if (from_obj && from_obj != val)
4510 if (looking_for_typename && TREE_CODE (from_obj) == TYPE_DECL
4511 && TREE_CODE (val) == TYPE_DECL
4512 && TREE_TYPE (from_obj) != TREE_TYPE (val))
4514 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
4515 name, got_object, TREE_TYPE (from_obj));
4516 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
4523 if ((TREE_CODE (val) == TEMPLATE_DECL && looking_for_template)
4524 || TREE_CODE (val) == TYPE_DECL || prefer_type <= 0)
4526 else if (IDENTIFIER_HAS_TYPE_VALUE (name))
4527 val = TYPE_NAME (IDENTIFIER_TYPE_VALUE (name));
4528 else if (TREE_TYPE (val) == error_mark_node)
4529 val = error_mark_node;
4538 lookup_name_nonclass (name)
4541 return lookup_name_real (name, 0, 1);
4545 lookup_name (name, prefer_type)
4549 return lookup_name_real (name, prefer_type, 0);
4552 /* Similar to `lookup_name' but look only at current binding level. */
4555 lookup_name_current_level (name)
4558 register tree t = NULL_TREE;
4560 if (current_binding_level == global_binding_level)
4562 t = IDENTIFIER_GLOBAL_VALUE (name);
4564 /* extern "C" function() */
4565 if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST)
4568 else if (IDENTIFIER_LOCAL_VALUE (name) != NULL_TREE)
4570 struct binding_level *b = current_binding_level;
4573 for (t = b->names; t; t = TREE_CHAIN (t))
4574 if (DECL_NAME (t) == name || DECL_ASSEMBLER_NAME (t) == name)
4588 /* Arrange for the user to get a source line number, even when the
4589 compiler is going down in flames, so that she at least has a
4590 chance of working around problems in the compiler. We used to
4591 call error(), but that let the segmentation fault continue
4592 through; now, it's much more passive by asking them to send the
4593 maintainers mail about the problem. */
4599 signal (SIGSEGV, SIG_DFL);
4601 signal (SIGIOT, SIG_DFL);
4604 signal (SIGILL, SIG_DFL);
4607 signal (SIGABRT, SIG_DFL);
4610 signal (SIGBUS, SIG_DFL);
4612 my_friendly_abort (0);
4615 /* Array for holding types considered "built-in". These types
4616 are output in the module in which `main' is defined. */
4617 static tree *builtin_type_tdescs_arr;
4618 static int builtin_type_tdescs_len, builtin_type_tdescs_max;
4620 /* Push the declarations of builtin types into the namespace.
4621 RID_INDEX, if < RID_MAX is the index of the builtin type
4622 in the array RID_POINTERS. NAME is the name used when looking
4623 up the builtin type. TYPE is the _TYPE node for the builtin type. */
4626 record_builtin_type (rid_index, name, type)
4631 tree rname = NULL_TREE, tname = NULL_TREE;
4634 if ((int) rid_index < (int) RID_MAX)
4635 rname = ridpointers[(int) rid_index];
4637 tname = get_identifier (name);
4639 TYPE_BUILT_IN (type) = 1;
4643 tdecl = pushdecl (build_decl (TYPE_DECL, tname, type));
4644 set_identifier_type_value (tname, NULL_TREE);
4645 if ((int) rid_index < (int) RID_MAX)
4646 IDENTIFIER_GLOBAL_VALUE (tname) = tdecl;
4648 if (rname != NULL_TREE)
4650 if (tname != NULL_TREE)
4652 set_identifier_type_value (rname, NULL_TREE);
4653 IDENTIFIER_GLOBAL_VALUE (rname) = tdecl;
4657 tdecl = pushdecl (build_decl (TYPE_DECL, rname, type));
4658 set_identifier_type_value (rname, NULL_TREE);
4663 /* Push overloaded decl, in global scope, with one argument so it
4664 can be used as a callback from define_function. */
4667 push_overloaded_decl_1 (x)
4670 push_overloaded_decl (x, 0);
4677 auto_function (name, type, code)
4679 enum built_in_function code;
4681 return define_function
4682 (IDENTIFIER_POINTER (name), type, code, (void (*)())push_overloaded_decl_1,
4683 IDENTIFIER_POINTER (build_decl_overload (name, TYPE_ARG_TYPES (type),
4687 /* Create the predefined scalar types of C,
4688 and some nodes representing standard constants (0, 1, (void *)0).
4689 Initialize the global binding level.
4690 Make definitions for built-in primitive functions. */
4693 init_decl_processing ()
4696 register tree endlink, int_endlink, double_endlink;
4698 /* Either char* or void*. */
4699 tree traditional_ptr_type_node;
4700 /* Data type of memcpy. */
4701 tree memcpy_ftype, strlen_ftype;
4702 int wchar_type_size;
4704 tree array_domain_type;
4705 extern int flag_strict_prototype;
4706 tree vb_off_identifier;
4707 /* Function type `char *(char *, char *)' and similar ones */
4708 tree string_ftype_ptr_ptr, int_ftype_string_string;
4710 /* Have to make these distinct before we try using them. */
4711 lang_name_cplusplus = get_identifier ("C++");
4712 lang_name_c = get_identifier ("C");
4714 if (flag_strict_prototype == 2)
4717 strict_prototypes_lang_c = strict_prototypes_lang_cplusplus;
4720 strict_prototypes_lang_c = flag_strict_prototype;
4723 current_lang_name = lang_name_c;
4725 current_function_decl = NULL_TREE;
4726 named_labels = NULL_TREE;
4727 named_label_uses = NULL;
4728 current_binding_level = NULL_BINDING_LEVEL;
4729 free_binding_level = NULL_BINDING_LEVEL;
4731 /* Because most segmentation signals can be traced back into user
4732 code, catch them and at least give the user a chance of working
4733 around compiler bugs. */
4734 signal (SIGSEGV, signal_catch);
4736 /* We will also catch aborts in the back-end through signal_catch and
4737 give the user a chance to see where the error might be, and to defeat
4738 aborts in the back-end when there have been errors previously in their
4741 signal (SIGIOT, signal_catch);
4744 signal (SIGILL, signal_catch);
4747 signal (SIGABRT, signal_catch);
4750 signal (SIGBUS, signal_catch);
4753 gcc_obstack_init (&decl_obstack);
4755 /* Must lay these out before anything else gets laid out. */
4756 error_mark_node = make_node (ERROR_MARK);
4757 TREE_PERMANENT (error_mark_node) = 1;
4758 TREE_TYPE (error_mark_node) = error_mark_node;
4759 error_mark_list = build_tree_list (error_mark_node, error_mark_node);
4760 TREE_TYPE (error_mark_list) = error_mark_node;
4762 /* Make the binding_level structure for global names. */
4764 global_binding_level = current_binding_level;
4766 this_identifier = get_identifier (THIS_NAME);
4767 in_charge_identifier = get_identifier (IN_CHARGE_NAME);
4768 ctor_identifier = get_identifier (CTOR_NAME);
4769 dtor_identifier = get_identifier (DTOR_NAME);
4770 pfn_identifier = get_identifier (VTABLE_PFN_NAME);
4771 index_identifier = get_identifier (VTABLE_INDEX_NAME);
4772 delta_identifier = get_identifier (VTABLE_DELTA_NAME);
4773 delta2_identifier = get_identifier (VTABLE_DELTA2_NAME);
4774 pfn_or_delta2_identifier = get_identifier ("__pfn_or_delta2");
4775 if (flag_handle_signatures)
4777 tag_identifier = get_identifier (SIGTABLE_TAG_NAME);
4778 vb_off_identifier = get_identifier (SIGTABLE_VB_OFF_NAME);
4779 vt_off_identifier = get_identifier (SIGTABLE_VT_OFF_NAME);
4782 /* Define `int' and `char' first so that dbx will output them first. */
4784 integer_type_node = make_signed_type (INT_TYPE_SIZE);
4785 record_builtin_type (RID_INT, NULL_PTR, integer_type_node);
4787 /* Define `char', which is like either `signed char' or `unsigned char'
4788 but not the same as either. */
4792 ? make_signed_type (CHAR_TYPE_SIZE)
4793 : make_unsigned_type (CHAR_TYPE_SIZE));
4794 record_builtin_type (RID_CHAR, "char", char_type_node);
4796 long_integer_type_node = make_signed_type (LONG_TYPE_SIZE);
4797 record_builtin_type (RID_LONG, "long int", long_integer_type_node);
4799 unsigned_type_node = make_unsigned_type (INT_TYPE_SIZE);
4800 record_builtin_type (RID_UNSIGNED, "unsigned int", unsigned_type_node);
4802 long_unsigned_type_node = make_unsigned_type (LONG_TYPE_SIZE);
4803 record_builtin_type (RID_MAX, "long unsigned int", long_unsigned_type_node);
4804 record_builtin_type (RID_MAX, "unsigned long", long_unsigned_type_node);
4806 long_long_integer_type_node = make_signed_type (LONG_LONG_TYPE_SIZE);
4807 record_builtin_type (RID_MAX, "long long int", long_long_integer_type_node);
4809 long_long_unsigned_type_node = make_unsigned_type (LONG_LONG_TYPE_SIZE);
4810 record_builtin_type (RID_MAX, "long long unsigned int",
4811 long_long_unsigned_type_node);
4812 record_builtin_type (RID_MAX, "long long unsigned",
4813 long_long_unsigned_type_node);
4815 short_integer_type_node = make_signed_type (SHORT_TYPE_SIZE);
4816 record_builtin_type (RID_SHORT, "short int", short_integer_type_node);
4817 short_unsigned_type_node = make_unsigned_type (SHORT_TYPE_SIZE);
4818 record_builtin_type (RID_MAX, "short unsigned int", short_unsigned_type_node);
4819 record_builtin_type (RID_MAX, "unsigned short", short_unsigned_type_node);
4821 /* `unsigned long' is the standard type for sizeof.
4822 Traditionally, use a signed type.
4823 Note that stddef.h uses `unsigned long',
4824 and this must agree, even of long and int are the same size. */
4826 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE)));
4827 if (flag_traditional && TREE_UNSIGNED (sizetype))
4828 sizetype = signed_type (sizetype);
4831 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE)));
4833 TREE_TYPE (TYPE_SIZE (integer_type_node)) = sizetype;
4834 TREE_TYPE (TYPE_SIZE (char_type_node)) = sizetype;
4835 TREE_TYPE (TYPE_SIZE (unsigned_type_node)) = sizetype;
4836 TREE_TYPE (TYPE_SIZE (long_unsigned_type_node)) = sizetype;
4837 TREE_TYPE (TYPE_SIZE (long_integer_type_node)) = sizetype;
4838 TREE_TYPE (TYPE_SIZE (long_long_integer_type_node)) = sizetype;
4839 TREE_TYPE (TYPE_SIZE (long_long_unsigned_type_node)) = sizetype;
4840 TREE_TYPE (TYPE_SIZE (short_integer_type_node)) = sizetype;
4841 TREE_TYPE (TYPE_SIZE (short_unsigned_type_node)) = sizetype;
4843 /* Define both `signed char' and `unsigned char'. */
4844 signed_char_type_node = make_signed_type (CHAR_TYPE_SIZE);
4845 record_builtin_type (RID_MAX, "signed char", signed_char_type_node);
4846 unsigned_char_type_node = make_unsigned_type (CHAR_TYPE_SIZE);
4847 record_builtin_type (RID_MAX, "unsigned char", unsigned_char_type_node);
4849 /* These are types that type_for_size and type_for_mode use. */
4850 intQI_type_node = make_signed_type (GET_MODE_BITSIZE (QImode));
4851 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intQI_type_node));
4852 intHI_type_node = make_signed_type (GET_MODE_BITSIZE (HImode));
4853 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intHI_type_node));
4854 intSI_type_node = make_signed_type (GET_MODE_BITSIZE (SImode));
4855 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intSI_type_node));
4856 intDI_type_node = make_signed_type (GET_MODE_BITSIZE (DImode));
4857 pushdecl (build_decl (TYPE_DECL, NULL_TREE, intDI_type_node));
4858 unsigned_intQI_type_node = make_unsigned_type (GET_MODE_BITSIZE (QImode));
4859 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intQI_type_node));
4860 unsigned_intHI_type_node = make_unsigned_type (GET_MODE_BITSIZE (HImode));
4861 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intHI_type_node));
4862 unsigned_intSI_type_node = make_unsigned_type (GET_MODE_BITSIZE (SImode));
4863 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intSI_type_node));
4864 unsigned_intDI_type_node = make_unsigned_type (GET_MODE_BITSIZE (DImode));
4865 pushdecl (build_decl (TYPE_DECL, NULL_TREE, unsigned_intDI_type_node));
4867 float_type_node = make_node (REAL_TYPE);
4868 TYPE_PRECISION (float_type_node) = FLOAT_TYPE_SIZE;
4869 record_builtin_type (RID_FLOAT, NULL_PTR, float_type_node);
4870 layout_type (float_type_node);
4872 double_type_node = make_node (REAL_TYPE);
4873 if (flag_short_double)
4874 TYPE_PRECISION (double_type_node) = FLOAT_TYPE_SIZE;
4876 TYPE_PRECISION (double_type_node) = DOUBLE_TYPE_SIZE;
4877 record_builtin_type (RID_DOUBLE, NULL_PTR, double_type_node);
4878 layout_type (double_type_node);
4880 long_double_type_node = make_node (REAL_TYPE);
4881 TYPE_PRECISION (long_double_type_node) = LONG_DOUBLE_TYPE_SIZE;
4882 record_builtin_type (RID_MAX, "long double", long_double_type_node);
4883 layout_type (long_double_type_node);
4885 integer_zero_node = build_int_2 (0, 0);
4886 TREE_TYPE (integer_zero_node) = integer_type_node;
4887 integer_one_node = build_int_2 (1, 0);
4888 TREE_TYPE (integer_one_node) = integer_type_node;
4889 integer_two_node = build_int_2 (2, 0);
4890 TREE_TYPE (integer_two_node) = integer_type_node;
4891 integer_three_node = build_int_2 (3, 0);
4892 TREE_TYPE (integer_three_node) = integer_type_node;
4894 boolean_type_node = make_unsigned_type (BOOL_TYPE_SIZE);
4895 TREE_SET_CODE (boolean_type_node, BOOLEAN_TYPE);
4896 record_builtin_type (RID_BOOL, "bool", boolean_type_node);
4897 boolean_false_node = build_int_2 (0, 0);
4898 TREE_TYPE (boolean_false_node) = boolean_type_node;
4899 boolean_true_node = build_int_2 (1, 0);
4900 TREE_TYPE (boolean_true_node) = boolean_type_node;
4902 /* These are needed by stor-layout.c. */
4903 size_zero_node = size_int (0);
4904 size_one_node = size_int (1);
4906 signed_size_zero_node = build_int_2 (0, 0);
4907 TREE_TYPE (signed_size_zero_node) = make_signed_type (TYPE_PRECISION (sizetype));
4909 void_type_node = make_node (VOID_TYPE);
4910 record_builtin_type (RID_VOID, NULL_PTR, void_type_node);
4911 layout_type (void_type_node); /* Uses integer_zero_node. */
4912 void_list_node = build_tree_list (NULL_TREE, void_type_node);
4913 TREE_PARMLIST (void_list_node) = 1;
4915 null_pointer_node = build_int_2 (0, 0);
4916 TREE_TYPE (null_pointer_node) = build_pointer_type (void_type_node);
4917 layout_type (TREE_TYPE (null_pointer_node));
4920 TREE_TYPE (null_node) = type_for_size (POINTER_SIZE, 0);
4922 TREE_TYPE (null_node) = build_pointer_type (void_type_node);
4924 /* Used for expressions that do nothing, but are not errors. */
4925 void_zero_node = build_int_2 (0, 0);
4926 TREE_TYPE (void_zero_node) = void_type_node;
4928 string_type_node = build_pointer_type (char_type_node);
4929 const_string_type_node =
4930 build_pointer_type (build_type_variant (char_type_node, 1, 0));
4932 record_builtin_type (RID_MAX, NULL_PTR, string_type_node);
4935 /* Make a type to be the domain of a few array types
4936 whose domains don't really matter.
4937 200 is small enough that it always fits in size_t
4938 and large enough that it can hold most function names for the
4939 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
4940 array_domain_type = build_index_type (build_int_2 (200, 0));
4942 /* make a type for arrays of characters.
4943 With luck nothing will ever really depend on the length of this
4945 char_array_type_node
4946 = build_array_type (char_type_node, array_domain_type);
4947 /* Likewise for arrays of ints. */
4949 = build_array_type (integer_type_node, array_domain_type);
4951 /* This is just some anonymous class type. Nobody should ever
4952 need to look inside this envelope. */
4953 class_star_type_node = build_pointer_type (make_lang_type (RECORD_TYPE));
4955 default_function_type
4956 = build_function_type (integer_type_node, NULL_TREE);
4958 ptr_type_node = build_pointer_type (void_type_node);
4959 const_ptr_type_node =
4960 build_pointer_type (build_type_variant (void_type_node, 1, 0));
4962 record_builtin_type (RID_MAX, NULL_PTR, ptr_type_node);
4964 endlink = void_list_node;
4965 int_endlink = tree_cons (NULL_TREE, integer_type_node, endlink);
4966 double_endlink = tree_cons (NULL_TREE, double_type_node, endlink);
4969 = build_function_type (float_type_node,
4970 tree_cons (NULL_TREE, float_type_node, endlink));
4973 = build_function_type (double_type_node, double_endlink);
4975 ldouble_ftype_ldouble
4976 = build_function_type (long_double_type_node,
4977 tree_cons (NULL_TREE, long_double_type_node,
4980 double_ftype_double_double
4981 = build_function_type (double_type_node,
4982 tree_cons (NULL_TREE, double_type_node,
4986 = build_function_type (integer_type_node, int_endlink);
4989 = build_function_type (long_integer_type_node,
4990 tree_cons (NULL_TREE, long_integer_type_node,
4993 int_ftype_cptr_cptr_sizet
4994 = build_function_type (integer_type_node,
4995 tree_cons (NULL_TREE, const_ptr_type_node,
4996 tree_cons (NULL_TREE, const_ptr_type_node,
4997 tree_cons (NULL_TREE,
5001 string_ftype_ptr_ptr /* strcpy prototype */
5002 = build_function_type (string_type_node,
5003 tree_cons (NULL_TREE, string_type_node,
5004 tree_cons (NULL_TREE,
5005 const_string_type_node,
5008 int_ftype_string_string /* strcmp prototype */
5009 = build_function_type (integer_type_node,
5010 tree_cons (NULL_TREE, const_string_type_node,
5011 tree_cons (NULL_TREE,
5012 const_string_type_node,
5015 strlen_ftype /* strlen prototype */
5016 = build_function_type (sizetype,
5017 tree_cons (NULL_TREE, const_string_type_node,
5020 traditional_ptr_type_node
5021 = (flag_traditional ? string_type_node : ptr_type_node);
5023 memcpy_ftype /* memcpy prototype */
5024 = build_function_type (traditional_ptr_type_node,
5025 tree_cons (NULL_TREE, ptr_type_node,
5026 tree_cons (NULL_TREE, const_ptr_type_node,
5027 tree_cons (NULL_TREE,
5031 if (flag_huge_objects)
5032 delta_type_node = long_integer_type_node;
5034 delta_type_node = short_integer_type_node;
5036 builtin_function ("__builtin_constant_p", int_ftype_int,
5037 BUILT_IN_CONSTANT_P, NULL_PTR);
5039 builtin_return_address_fndecl =
5040 builtin_function ("__builtin_return_address",
5041 build_function_type (ptr_type_node,
5042 tree_cons (NULL_TREE,
5045 BUILT_IN_RETURN_ADDRESS, NULL_PTR);
5047 builtin_function ("__builtin_frame_address",
5048 build_function_type (ptr_type_node,
5049 tree_cons (NULL_TREE,
5052 BUILT_IN_FRAME_ADDRESS, NULL_PTR);
5054 builtin_function ("__builtin_alloca",
5055 build_function_type (ptr_type_node,
5056 tree_cons (NULL_TREE,
5059 BUILT_IN_ALLOCA, "alloca");
5060 builtin_function ("__builtin_ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
5061 /* Define alloca, ffs as builtins.
5062 Declare _exit just to mark it as volatile. */
5063 if (! flag_no_builtin && !flag_no_nonansi_builtin)
5065 temp = builtin_function ("alloca",
5066 build_function_type (ptr_type_node,
5067 tree_cons (NULL_TREE,
5070 BUILT_IN_ALLOCA, NULL_PTR);
5071 /* Suppress error if redefined as a non-function. */
5072 DECL_BUILT_IN_NONANSI (temp) = 1;
5073 temp = builtin_function ("ffs", int_ftype_int, BUILT_IN_FFS, NULL_PTR);
5074 /* Suppress error if redefined as a non-function. */
5075 DECL_BUILT_IN_NONANSI (temp) = 1;
5076 temp = builtin_function ("_exit", build_function_type (void_type_node,
5078 NOT_BUILT_IN, NULL_PTR);
5079 TREE_THIS_VOLATILE (temp) = 1;
5080 TREE_SIDE_EFFECTS (temp) = 1;
5081 /* Suppress error if redefined as a non-function. */
5082 DECL_BUILT_IN_NONANSI (temp) = 1;
5085 builtin_function ("__builtin_abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
5086 builtin_function ("__builtin_fabsf", float_ftype_float, BUILT_IN_FABS,
5088 builtin_function ("__builtin_fabs", double_ftype_double, BUILT_IN_FABS,
5090 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
5092 builtin_function ("__builtin_labs", long_ftype_long,
5093 BUILT_IN_LABS, NULL_PTR);
5094 builtin_function ("__builtin_saveregs",
5095 build_function_type (ptr_type_node, NULL_TREE),
5096 BUILT_IN_SAVEREGS, NULL_PTR);
5097 builtin_function ("__builtin_classify_type", default_function_type,
5098 BUILT_IN_CLASSIFY_TYPE, NULL_PTR);
5099 builtin_function ("__builtin_next_arg",
5100 build_function_type (ptr_type_node, NULL_TREE),
5101 BUILT_IN_NEXT_ARG, NULL_PTR);
5102 builtin_function ("__builtin_args_info",
5103 build_function_type (integer_type_node,
5104 tree_cons (NULL_TREE,
5107 BUILT_IN_ARGS_INFO, NULL_PTR);
5109 /* Untyped call and return. */
5110 builtin_function ("__builtin_apply_args",
5111 build_function_type (ptr_type_node, NULL_TREE),
5112 BUILT_IN_APPLY_ARGS, NULL_PTR);
5114 temp = tree_cons (NULL_TREE,
5115 build_pointer_type (build_function_type (void_type_node,
5117 tree_cons (NULL_TREE,
5119 tree_cons (NULL_TREE,
5122 builtin_function ("__builtin_apply",
5123 build_function_type (ptr_type_node, temp),
5124 BUILT_IN_APPLY, NULL_PTR);
5125 builtin_function ("__builtin_return",
5126 build_function_type (void_type_node,
5127 tree_cons (NULL_TREE,
5130 BUILT_IN_RETURN, NULL_PTR);
5132 /* Currently under experimentation. */
5133 builtin_function ("__builtin_memcpy", memcpy_ftype,
5134 BUILT_IN_MEMCPY, "memcpy");
5135 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet,
5136 BUILT_IN_MEMCMP, "memcmp");
5137 builtin_function ("__builtin_strcmp", int_ftype_string_string,
5138 BUILT_IN_STRCMP, "strcmp");
5139 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr,
5140 BUILT_IN_STRCPY, "strcpy");
5141 builtin_function ("__builtin_strlen", strlen_ftype,
5142 BUILT_IN_STRLEN, "strlen");
5143 builtin_function ("__builtin_sqrtf", float_ftype_float,
5144 BUILT_IN_FSQRT, "sqrtf");
5145 builtin_function ("__builtin_fsqrt", double_ftype_double,
5146 BUILT_IN_FSQRT, NULL_PTR);
5147 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble,
5148 BUILT_IN_FSQRT, "sqrtl");
5149 builtin_function ("__builtin_sinf", float_ftype_float,
5150 BUILT_IN_SIN, "sinf");
5151 builtin_function ("__builtin_sin", double_ftype_double,
5152 BUILT_IN_SIN, "sin");
5153 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble,
5154 BUILT_IN_SIN, "sinl");
5155 builtin_function ("__builtin_cosf", float_ftype_float,
5156 BUILT_IN_COS, "cosf");
5157 builtin_function ("__builtin_cos", double_ftype_double,
5158 BUILT_IN_COS, "cos");
5159 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble,
5160 BUILT_IN_COS, "cosl");
5162 if (!flag_no_builtin)
5164 #if 0 /* These do not work well with libg++. */
5165 builtin_function ("abs", int_ftype_int, BUILT_IN_ABS, NULL_PTR);
5166 builtin_function ("fabs", double_ftype_double, BUILT_IN_FABS, NULL_PTR);
5167 builtin_function ("labs", long_ftype_long, BUILT_IN_LABS, NULL_PTR);
5169 builtin_function ("fabsf", float_ftype_float, BUILT_IN_FABS, NULL_PTR);
5170 builtin_function ("fabsl", ldouble_ftype_ldouble, BUILT_IN_FABS,
5172 builtin_function ("memcpy", memcpy_ftype, BUILT_IN_MEMCPY, NULL_PTR);
5173 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet, BUILT_IN_MEMCMP,
5175 builtin_function ("strcmp", int_ftype_string_string, BUILT_IN_STRCMP,
5177 builtin_function ("strcpy", string_ftype_ptr_ptr, BUILT_IN_STRCPY,
5179 builtin_function ("strlen", strlen_ftype, BUILT_IN_STRLEN, NULL_PTR);
5180 builtin_function ("sqrtf", float_ftype_float, BUILT_IN_FSQRT, NULL_PTR);
5181 builtin_function ("sqrt", double_ftype_double, BUILT_IN_FSQRT, NULL_PTR);
5182 builtin_function ("sqrtl", ldouble_ftype_ldouble, BUILT_IN_FSQRT,
5184 builtin_function ("sinf", float_ftype_float, BUILT_IN_SIN, NULL_PTR);
5185 builtin_function ("sin", double_ftype_double, BUILT_IN_SIN, NULL_PTR);
5186 builtin_function ("sinl", ldouble_ftype_ldouble, BUILT_IN_SIN, NULL_PTR);
5187 builtin_function ("cosf", float_ftype_float, BUILT_IN_COS, NULL_PTR);
5188 builtin_function ("cos", double_ftype_double, BUILT_IN_COS, NULL_PTR);
5189 builtin_function ("cosl", ldouble_ftype_ldouble, BUILT_IN_COS, NULL_PTR);
5191 /* Declare these functions volatile
5192 to avoid spurious "control drops through" warnings. */
5193 temp = builtin_function ("abort",
5194 build_function_type (void_type_node, endlink),
5195 NOT_BUILT_IN, NULL_PTR);
5196 TREE_THIS_VOLATILE (temp) = 1;
5197 TREE_SIDE_EFFECTS (temp) = 1;
5198 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
5200 DECL_BUILT_IN_NONANSI (temp) = 1;
5201 temp = builtin_function ("exit", build_function_type (void_type_node,
5203 NOT_BUILT_IN, NULL_PTR);
5204 TREE_THIS_VOLATILE (temp) = 1;
5205 TREE_SIDE_EFFECTS (temp) = 1;
5206 DECL_BUILT_IN_NONANSI (temp) = 1;
5210 /* Support for these has not been written in either expand_builtin
5211 or build_function_call. */
5212 builtin_function ("__builtin_div", default_ftype, BUILT_IN_DIV, NULL_PTR);
5213 builtin_function ("__builtin_ldiv", default_ftype, BUILT_IN_LDIV, NULL_PTR);
5214 builtin_function ("__builtin_ffloor", double_ftype_double, BUILT_IN_FFLOOR,
5216 builtin_function ("__builtin_fceil", double_ftype_double, BUILT_IN_FCEIL,
5218 builtin_function ("__builtin_fmod", double_ftype_double_double,
5219 BUILT_IN_FMOD, NULL_PTR);
5220 builtin_function ("__builtin_frem", double_ftype_double_double,
5221 BUILT_IN_FREM, NULL_PTR);
5222 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int,
5223 BUILT_IN_MEMSET, NULL_PTR);
5224 builtin_function ("__builtin_getexp", double_ftype_double, BUILT_IN_GETEXP,
5226 builtin_function ("__builtin_getman", double_ftype_double, BUILT_IN_GETMAN,
5230 /* C++ extensions */
5232 unknown_type_node = make_node (UNKNOWN_TYPE);
5233 decl = pushdecl (build_decl (TYPE_DECL, get_identifier ("unknown type"),
5234 unknown_type_node));
5235 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5236 DECL_IGNORED_P (decl) = 1;
5237 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
5238 TYPE_SIZE (unknown_type_node) = TYPE_SIZE (void_type_node);
5239 TYPE_ALIGN (unknown_type_node) = 1;
5240 TYPE_MODE (unknown_type_node) = TYPE_MODE (void_type_node);
5241 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
5242 TREE_TYPE (unknown_type_node) = unknown_type_node;
5243 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same result. */
5244 TYPE_POINTER_TO (unknown_type_node) = unknown_type_node;
5245 TYPE_REFERENCE_TO (unknown_type_node) = unknown_type_node;
5247 /* This is for handling opaque types in signatures. */
5248 opaque_type_node = copy_node (ptr_type_node);
5249 TYPE_MAIN_VARIANT (opaque_type_node) = opaque_type_node;
5250 record_builtin_type (RID_MAX, 0, opaque_type_node);
5252 /* This is special for C++ so functions can be overloaded. */
5254 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE)));
5255 wchar_type_size = TYPE_PRECISION (wchar_type_node);
5256 signed_wchar_type_node = make_signed_type (wchar_type_size);
5257 unsigned_wchar_type_node = make_unsigned_type (wchar_type_size);
5259 = TREE_UNSIGNED (wchar_type_node)
5260 ? unsigned_wchar_type_node
5261 : signed_wchar_type_node;
5262 record_builtin_type (RID_WCHAR, "__wchar_t", wchar_type_node);
5264 /* Artificial declaration of wchar_t -- can be bashed */
5265 wchar_decl_node = build_decl (TYPE_DECL, get_identifier ("wchar_t"),
5267 pushdecl (wchar_decl_node);
5269 /* This is for wide string constants. */
5270 wchar_array_type_node
5271 = build_array_type (wchar_type_node, array_domain_type);
5273 if (flag_vtable_thunks)
5275 /* Make sure we get a unique function type, so we can give
5276 its pointer type a name. (This wins for gdb.) */
5277 tree vfunc_type = make_node (FUNCTION_TYPE);
5278 TREE_TYPE (vfunc_type) = integer_type_node;
5279 TYPE_ARG_TYPES (vfunc_type) = NULL_TREE;
5280 layout_type (vfunc_type);
5282 vtable_entry_type = build_pointer_type (vfunc_type);
5286 vtable_entry_type = make_lang_type (RECORD_TYPE);
5287 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
5289 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
5291 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
5293 finish_builtin_type (vtable_entry_type, VTBL_PTR_TYPE, fields, 2,
5296 /* Make this part of an invisible union. */
5297 fields[3] = copy_node (fields[2]);
5298 TREE_TYPE (fields[3]) = delta_type_node;
5299 DECL_NAME (fields[3]) = delta2_identifier;
5300 DECL_MODE (fields[3]) = TYPE_MODE (delta_type_node);
5301 DECL_SIZE (fields[3]) = TYPE_SIZE (delta_type_node);
5302 TREE_UNSIGNED (fields[3]) = 0;
5303 TREE_CHAIN (fields[2]) = fields[3];
5304 vtable_entry_type = build_type_variant (vtable_entry_type, 1, 0);
5306 record_builtin_type (RID_MAX, VTBL_PTR_TYPE, vtable_entry_type);
5309 = build_array_type (vtable_entry_type, NULL_TREE);
5310 layout_type (vtbl_type_node);
5311 vtbl_type_node = cp_build_type_variant (vtbl_type_node, 1, 0);
5312 record_builtin_type (RID_MAX, NULL_PTR, vtbl_type_node);
5314 /* Simplify life by making a "sigtable_entry_type". Give its
5315 fields names so that the debugger can use them. */
5317 if (flag_handle_signatures)
5319 sigtable_entry_type = make_lang_type (RECORD_TYPE);
5320 fields[0] = build_lang_field_decl (FIELD_DECL, tag_identifier,
5322 fields[1] = build_lang_field_decl (FIELD_DECL, vb_off_identifier,
5324 fields[2] = build_lang_field_decl (FIELD_DECL, delta_identifier,
5326 fields[3] = build_lang_field_decl (FIELD_DECL, index_identifier,
5328 fields[4] = build_lang_field_decl (FIELD_DECL, pfn_identifier,
5331 /* Set the alignment to the max of the alignment of ptr_type_node and
5332 delta_type_node. Double alignment wastes a word on the Sparc. */
5333 finish_builtin_type (sigtable_entry_type, SIGTABLE_PTR_TYPE, fields, 4,
5334 (TYPE_ALIGN (ptr_type_node) > TYPE_ALIGN (delta_type_node))
5338 /* Make this part of an invisible union. */
5339 fields[5] = copy_node (fields[4]);
5340 TREE_TYPE (fields[5]) = delta_type_node;
5341 DECL_NAME (fields[5]) = vt_off_identifier;
5342 DECL_MODE (fields[5]) = TYPE_MODE (delta_type_node);
5343 DECL_SIZE (fields[5]) = TYPE_SIZE (delta_type_node);
5344 TREE_UNSIGNED (fields[5]) = 0;
5345 TREE_CHAIN (fields[4]) = fields[5];
5347 sigtable_entry_type = build_type_variant (sigtable_entry_type, 1, 0);
5348 record_builtin_type (RID_MAX, SIGTABLE_PTR_TYPE, sigtable_entry_type);
5354 /* Must build __t_desc type. Currently, type descriptors look like this:
5361 struct __t_desc *points_to;
5362 int ivars_count, meths_count;
5363 struct __i_desc *ivars[];
5364 struct __m_desc *meths[];
5365 struct __t_desc *parents[];
5366 struct __t_desc *vbases[];
5370 ...as per Linton's paper. */
5372 __t_desc_type_node = make_lang_type (RECORD_TYPE);
5373 __i_desc_type_node = make_lang_type (RECORD_TYPE);
5374 __m_desc_type_node = make_lang_type (RECORD_TYPE);
5375 __t_desc_array_type =
5376 build_array_type (build_pointer_type (__t_desc_type_node), NULL_TREE);
5377 __i_desc_array_type =
5378 build_array_type (build_pointer_type (__i_desc_type_node), NULL_TREE);
5379 __m_desc_array_type =
5380 build_array_type (build_pointer_type (__m_desc_type_node), NULL_TREE);
5382 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5384 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("size"),
5385 unsigned_type_node);
5386 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("bits"),
5387 unsigned_type_node);
5388 fields[3] = build_lang_field_decl (FIELD_DECL,
5389 get_identifier ("points_to"),
5390 build_pointer_type (__t_desc_type_node));
5391 fields[4] = build_lang_field_decl (FIELD_DECL,
5392 get_identifier ("ivars_count"),
5394 fields[5] = build_lang_field_decl (FIELD_DECL,
5395 get_identifier ("meths_count"),
5397 fields[6] = build_lang_field_decl (FIELD_DECL, get_identifier ("ivars"),
5398 build_pointer_type (__i_desc_array_type));
5399 fields[7] = build_lang_field_decl (FIELD_DECL, get_identifier ("meths"),
5400 build_pointer_type (__m_desc_array_type));
5401 fields[8] = build_lang_field_decl (FIELD_DECL, get_identifier ("parents"),
5402 build_pointer_type (__t_desc_array_type));
5403 fields[9] = build_lang_field_decl (FIELD_DECL, get_identifier ("vbases"),
5404 build_pointer_type (__t_desc_array_type));
5405 fields[10] = build_lang_field_decl (FIELD_DECL, get_identifier ("offsets"),
5406 build_pointer_type (integer_type_node));
5407 finish_builtin_type (__t_desc_type_node, "__t_desc", fields, 10, integer_type_node);
5409 /* ivar descriptors look like this:
5415 struct __t_desc *type;
5419 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5421 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("offset"),
5423 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("type"),
5424 build_pointer_type (__t_desc_type_node));
5425 finish_builtin_type (__i_desc_type_node, "__i_desc", fields, 2,
5428 /* method descriptors look like this:
5434 struct __t_desc *vcontext;
5435 struct __t_desc *return_type;
5438 short required_parms;
5439 struct __t_desc *parm_types[];
5443 fields[0] = build_lang_field_decl (FIELD_DECL, get_identifier ("name"),
5445 fields[1] = build_lang_field_decl (FIELD_DECL, get_identifier ("vindex"),
5447 fields[2] = build_lang_field_decl (FIELD_DECL, get_identifier ("vcontext"),
5448 build_pointer_type (__t_desc_type_node));
5449 fields[3] = build_lang_field_decl (FIELD_DECL, get_identifier ("return_type"),
5450 build_pointer_type (__t_desc_type_node));
5451 fields[4] = build_lang_field_decl (FIELD_DECL, get_identifier ("address"),
5452 build_pointer_type (default_function_type));
5453 fields[5] = build_lang_field_decl (FIELD_DECL, get_identifier ("parm_count"),
5454 short_integer_type_node);
5455 fields[6] = build_lang_field_decl (FIELD_DECL, get_identifier ("required_parms"),
5456 short_integer_type_node);
5457 fields[7] = build_lang_field_decl (FIELD_DECL, get_identifier ("parm_types"),
5458 build_pointer_type (build_array_type (build_pointer_type (__t_desc_type_node), NULL_TREE)));
5459 finish_builtin_type (__m_desc_type_node, "__m_desc", fields, 7,
5462 #endif /*flag_rtti*/
5465 current_lang_name = lang_name_cplusplus;
5467 auto_function (ansi_opname[(int) NEW_EXPR],
5468 build_function_type (ptr_type_node,
5469 tree_cons (NULL_TREE, sizetype,
5472 auto_function (ansi_opname[(int) VEC_NEW_EXPR],
5473 build_function_type (ptr_type_node,
5474 tree_cons (NULL_TREE, sizetype,
5477 auto_function (ansi_opname[(int) DELETE_EXPR],
5478 build_function_type (void_type_node,
5479 tree_cons (NULL_TREE, ptr_type_node,
5482 auto_function (ansi_opname[(int) VEC_DELETE_EXPR],
5483 build_function_type (void_type_node,
5484 tree_cons (NULL_TREE, ptr_type_node,
5489 = define_function ("__pure_virtual",
5490 build_function_type (void_type_node, void_list_node),
5491 NOT_BUILT_IN, 0, 0);
5493 /* Perform other language dependent initializations. */
5494 init_class_processing ();
5495 init_init_processing ();
5496 init_search_processing ();
5497 init_rtti_processing ();
5499 if (flag_exceptions)
5500 init_exception_processing ();
5503 flag_inline_functions = 0;
5506 if (! supports_one_only ())
5509 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
5510 declare_function_name ();
5512 /* Prepare to check format strings against argument lists. */
5513 init_function_format_info ();
5516 /* initialize type descriptor type node of various rtti type. */
5523 tdecl = lookup_name (get_identifier ("type_info"), 0);
5524 if (tdecl == NULL_TREE)
5526 __t_desc_type_node = TREE_TYPE (tdecl);
5528 __tp_desc_type_node = build_pointer_type (__t_desc_type_node);
5532 tdecl = lookup_name (get_identifier ("__baselist_type_info"), 0);
5533 if (tdecl == NULL_TREE)
5535 __baselist_desc_type_node = TREE_TYPE (tdecl);
5538 tdecl = lookup_name (get_identifier ("__builtin_type_info"), 0);
5539 if (tdecl == NULL_TREE)
5541 __bltn_desc_type_node = TREE_TYPE (tdecl);
5543 tdecl = lookup_name (get_identifier ("__user_type_info"), 0);
5544 if (tdecl == NULL_TREE)
5546 __user_desc_type_node = TREE_TYPE (tdecl);
5548 tdecl = lookup_name (get_identifier ("__class_type_info"), 0);
5549 if (tdecl == NULL_TREE)
5551 __class_desc_type_node = TREE_TYPE (tdecl);
5553 tdecl = lookup_field (__class_desc_type_node,
5554 get_identifier ("access_mode"), 0, 0);
5555 if (tdecl == NULL_TREE)
5557 __access_mode_type_node = TREE_TYPE (tdecl);
5559 tdecl = lookup_name (get_identifier ("__attr_type_info"), 0);
5560 if (tdecl == NULL_TREE)
5562 __attr_desc_type_node = TREE_TYPE (tdecl);
5564 tdecl = lookup_name (get_identifier ("__pointer_type_info"), 0);
5565 if (tdecl == NULL_TREE)
5567 __ptr_desc_type_node = TREE_TYPE (tdecl);
5569 tdecl = lookup_name (get_identifier ("__func_type_info"), 0);
5570 if (tdecl == NULL_TREE)
5572 __func_desc_type_node = TREE_TYPE (tdecl);
5574 tdecl = lookup_name (get_identifier ("__ptmf_type_info"), 0);
5575 if (tdecl == NULL_TREE)
5577 __ptmf_desc_type_node = TREE_TYPE (tdecl);
5579 tdecl = lookup_name (get_identifier ("__ptmd_type_info"), 0);
5580 if (tdecl == NULL_TREE)
5582 __ptmd_desc_type_node = TREE_TYPE (tdecl);
5586 /* Make a definition for a builtin function named NAME and whose data type
5587 is TYPE. TYPE should be a function type with argument types.
5588 FUNCTION_CODE tells later passes how to compile calls to this function.
5589 See tree.h for its possible values.
5591 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
5592 the name to be called if we can't opencode the function. */
5595 define_function (name, type, function_code, pfn, library_name)
5598 enum built_in_function function_code;
5602 tree decl = build_lang_decl (FUNCTION_DECL, get_identifier (name), type);
5603 DECL_EXTERNAL (decl) = 1;
5604 TREE_PUBLIC (decl) = 1;
5605 DECL_ARTIFICIAL (decl) = 1;
5607 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
5608 we cannot change DECL_ASSEMBLER_NAME until we have installed this
5609 function in the namespace. */
5610 if (pfn) (*pfn) (decl);
5612 DECL_ASSEMBLER_NAME (decl) = get_identifier (library_name);
5613 make_function_rtl (decl);
5614 if (function_code != NOT_BUILT_IN)
5616 DECL_BUILT_IN (decl) = 1;
5617 DECL_FUNCTION_CODE (decl) = function_code;
5622 /* Called when a declaration is seen that contains no names to declare.
5623 If its type is a reference to a structure, union or enum inherited
5624 from a containing scope, shadow that tag name for the current scope
5625 with a forward reference.
5626 If its type defines a new named structure or union
5627 or defines an enum, it is valid but we need not do anything here.
5628 Otherwise, it is an error.
5630 C++: may have to grok the declspecs to learn about static,
5631 complain for anonymous unions. */
5634 shadow_tag (declspecs)
5638 tree ob_modifier = NULL_TREE;
5640 register enum tree_code code, ok_code = ERROR_MARK;
5641 register tree t = NULL_TREE;
5643 for (link = declspecs; link; link = TREE_CHAIN (link))
5645 register tree value = TREE_VALUE (link);
5647 code = TREE_CODE (value);
5648 if (IS_AGGR_TYPE_CODE (code) || code == ENUMERAL_TYPE)
5650 my_friendly_assert (TYPE_NAME (value) != NULL_TREE, 261);
5652 if (IS_AGGR_TYPE (value) && CLASSTYPE_USE_TEMPLATE (value))
5654 if (CLASSTYPE_IMPLICIT_INSTANTIATION (value)
5655 && TYPE_SIZE (value) == NULL_TREE)
5657 SET_CLASSTYPE_TEMPLATE_SPECIALIZATION (value);
5658 if (processing_template_decl)
5659 push_template_decl (TYPE_MAIN_DECL (value));
5661 else if (CLASSTYPE_TEMPLATE_INSTANTIATION (value))
5662 cp_error ("specialization after instantiation of `%T'", value);
5669 else if (value == ridpointers[(int) RID_STATIC]
5670 || value == ridpointers[(int) RID_EXTERN]
5671 || value == ridpointers[(int) RID_AUTO]
5672 || value == ridpointers[(int) RID_REGISTER]
5673 || value == ridpointers[(int) RID_INLINE]
5674 || value == ridpointers[(int) RID_VIRTUAL]
5675 || value == ridpointers[(int) RID_EXPLICIT])
5676 ob_modifier = value;
5679 /* This is where the variables in an anonymous union are
5680 declared. An anonymous union declaration looks like:
5682 because there is no declarator after the union, the parser
5683 sends that declaration here. */
5684 if (ok_code == UNION_TYPE
5686 && ((TREE_CODE (TYPE_NAME (t)) == IDENTIFIER_NODE
5687 && ANON_AGGRNAME_P (TYPE_NAME (t)))
5688 || (TREE_CODE (TYPE_NAME (t)) == TYPE_DECL
5689 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t)))))
5691 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
5692 function members. */
5693 if (TYPE_METHODS (t))
5694 error ("an anonymous union cannot have function members");
5696 if (TYPE_FIELDS (t))
5698 tree decl = grokdeclarator (NULL_TREE, declspecs, NORMAL, 0,
5700 finish_anon_union (decl);
5705 /* Anonymous unions are objects, that's why we only check for
5706 inappropriate specifiers in this branch. */
5710 if (ob_modifier == ridpointers[(int) RID_INLINE]
5711 || ob_modifier == ridpointers[(int) RID_VIRTUAL])
5712 cp_error ("`%D' can only be specified for functions", ob_modifier);
5713 else if (ob_modifier == ridpointers[(int) RID_EXPLICIT])
5714 cp_error ("`%D' can only be specified for constructors",
5717 cp_error ("`%D' can only be specified for objects and functions",
5722 pedwarn ("abstract declarator used as declaration");
5723 else if (found_tag > 1)
5724 pedwarn ("multiple types in one declaration");
5728 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
5731 groktypename (typename)
5734 if (TREE_CODE (typename) != TREE_LIST)
5736 return grokdeclarator (TREE_VALUE (typename),
5737 TREE_PURPOSE (typename),
5738 TYPENAME, 0, NULL_TREE);
5741 /* Decode a declarator in an ordinary declaration or data definition.
5742 This is called as soon as the type information and variable name
5743 have been parsed, before parsing the initializer if any.
5744 Here we create the ..._DECL node, fill in its type,
5745 and put it on the list of decls for the current context.
5746 The ..._DECL node is returned as the value.
5748 Exception: for arrays where the length is not specified,
5749 the type is left null, to be filled in by `cp_finish_decl'.
5751 Function definitions do not come here; they go to start_function
5752 instead. However, external and forward declarations of functions
5753 do go through here. Structure field declarations are done by
5754 grokfield and not through here. */
5756 /* Set this to zero to debug not using the temporary obstack
5757 to parse initializers. */
5758 int debug_temp_inits = 1;
5760 void start_decl_1 ();
5763 start_decl (declarator, declspecs, initialized)
5764 tree declarator, declspecs;
5768 register tree type, tem;
5770 extern int have_extern_spec;
5771 extern int used_extern_spec;
5774 /* See code below that used this. */
5775 int init_written = initialized;
5778 /* This should only be done once on the top most decl. */
5779 if (have_extern_spec && !used_extern_spec)
5781 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"),
5783 used_extern_spec = 1;
5786 decl = grokdeclarator (declarator, declspecs, NORMAL, initialized,
5788 if (decl == NULL_TREE || decl == void_type_node)
5791 type = TREE_TYPE (decl);
5793 /* Don't lose if destructors must be executed at file-level. */
5794 if (! processing_template_decl && TREE_STATIC (decl)
5795 && TYPE_NEEDS_DESTRUCTOR (complete_type (type))
5796 && !TREE_PERMANENT (decl))
5798 push_obstacks (&permanent_obstack, &permanent_obstack);
5799 decl = copy_node (decl);
5800 if (TREE_CODE (type) == ARRAY_TYPE)
5802 tree itype = TYPE_DOMAIN (type);
5803 if (itype && ! TREE_PERMANENT (itype))
5805 itype = build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype)));
5806 type = build_cplus_array_type (TREE_TYPE (type), itype);
5807 TREE_TYPE (decl) = type;
5814 = (TREE_CODE (decl) == FUNCTION_DECL && DECL_VIRTUAL_P (decl))
5815 ? DECL_CLASS_CONTEXT (decl)
5816 : DECL_CONTEXT (decl);
5819 /* Is it valid for this decl to have an initializer at all?
5820 If not, set INITIALIZED to zero, which will indirectly
5821 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
5822 switch (TREE_CODE (decl))
5825 /* typedef foo = bar means give foo the same type as bar.
5826 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
5827 Any other case of an initialization in a TYPE_DECL is an error. */
5828 if (pedantic || list_length (declspecs) > 1)
5830 cp_error ("typedef `%D' is initialized", decl);
5836 cp_error ("function `%#D' is initialized like a variable", decl);
5841 if (! processing_template_decl)
5843 if (TYPE_SIZE (type) != NULL_TREE
5844 && ! TREE_CONSTANT (TYPE_SIZE (type)))
5847 ("variable-sized object `%D' may not be initialized", decl);
5851 if (TREE_CODE (type) == ARRAY_TYPE
5852 && TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
5855 ("elements of array `%#D' have incomplete type", decl);
5863 if (! toplevel_bindings_p ()
5864 && DECL_EXTERNAL (decl))
5865 cp_warning ("declaration of `%#D' has `extern' and is initialized",
5867 DECL_EXTERNAL (decl) = 0;
5868 if (toplevel_bindings_p ())
5869 TREE_STATIC (decl) = 1;
5871 /* Tell `pushdecl' this is an initialized decl
5872 even though we don't yet have the initializer expression.
5873 Also tell `cp_finish_decl' it may store the real initializer. */
5874 DECL_INITIAL (decl) = error_mark_node;
5877 if (context && TYPE_SIZE (complete_type (context)) != NULL_TREE)
5879 if (TREE_CODE (decl) == VAR_DECL)
5881 tree field = lookup_field (context, DECL_NAME (decl), 0, 0);
5882 if (field == NULL_TREE || TREE_CODE (field) != VAR_DECL)
5883 cp_error ("`%#D' is not a static member of `%#T'", decl, context);
5886 if (DECL_CONTEXT (field) != context)
5887 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));
5888 if (duplicate_decls (decl, field))
5894 tree field = check_classfn (context, decl);
5895 if (field && duplicate_decls (decl, field))
5899 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
5900 if (DECL_LANG_SPECIFIC (decl))
5901 DECL_IN_AGGR_P (decl) = 0;
5902 if (DECL_USE_TEMPLATE (decl) || CLASSTYPE_USE_TEMPLATE (context))
5903 SET_DECL_TEMPLATE_SPECIALIZATION (decl);
5905 /* Stupid stupid stupid stupid (jason 7/21/95) */
5906 if (pedantic && DECL_EXTERNAL (decl)
5907 && ! DECL_TEMPLATE_SPECIALIZATION (decl))
5908 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
5911 pushclass (context, 2);
5914 /* Add this decl to the current binding level, but not if it
5915 comes from another scope, e.g. a static member variable.
5916 TEM may equal DECL or it may be a previous decl of the same name. */
5918 if ((TREE_CODE (decl) != PARM_DECL && DECL_CONTEXT (decl) != NULL_TREE)
5919 || (TREE_CODE (decl) == TEMPLATE_DECL && !global_bindings_p ())
5920 || TREE_CODE (type) == LANG_TYPE)
5923 tem = pushdecl (decl);
5925 if (processing_template_decl)
5927 if (! current_function_decl)
5928 push_template_decl (tem);
5929 else if (minimal_parse_mode)
5931 = build_min_nt (DECL_STMT, copy_to_permanent (declarator),
5932 copy_to_permanent (declspecs),
5937 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
5938 /* Tell the back-end to use or not use .common as appropriate. If we say
5939 -fconserve-space, we want this to save .data space, at the expense of
5940 wrong semantics. If we say -fno-conserve-space, we want this to
5941 produce errors about redefs; to do this we force variables into the
5943 DECL_COMMON (tem) = flag_conserve_space || ! TREE_PUBLIC (tem);
5946 if (! processing_template_decl)
5949 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
5950 push_obstacks_nochange ();
5953 /* We have no way of knowing whether the initializer will need to be
5954 evaluated at run-time or not until we've parsed it, so let's just put
5955 it in the permanent obstack. (jason) */
5957 && ! (TREE_CODE (tem) == PARM_DECL
5958 || (TREE_READONLY (tem)
5959 && (TREE_CODE (tem) == VAR_DECL
5960 || TREE_CODE (tem) == FIELD_DECL))))
5962 /* When parsing and digesting the initializer,
5963 use temporary storage. Do this even if we will ignore the value. */
5964 if (toplevel_bindings_p () && debug_temp_inits)
5966 if (processing_template_decl
5967 || TYPE_NEEDS_CONSTRUCTING (type)
5968 || TREE_CODE (type) == REFERENCE_TYPE)
5969 /* In this case, the initializer must lay down in permanent
5970 storage, since it will be saved until `finish_file' is run. */
5973 temporary_allocation ();
5985 tree type = TREE_TYPE (decl);
5986 int initialized = (DECL_INITIAL (decl) != NULL_TREE);
5988 /* If this type of object needs a cleanup, and control may
5989 jump past it, make a new binding level so that it is cleaned
5990 up only when it is initialized first. */
5991 if (TYPE_NEEDS_DESTRUCTOR (type)
5992 && current_binding_level->more_cleanups_ok == 0)
5993 pushlevel_temporary (1);
5996 /* Is it valid for this decl to have an initializer at all?
5997 If not, set INITIALIZED to zero, which will indirectly
5998 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6000 /* Don't allow initializations for incomplete types except for
6001 arrays which might be completed by the initialization. */
6002 if (type == error_mark_node)
6003 ; /* Don't complain again. */
6004 else if (TYPE_SIZE (complete_type (type)) != NULL_TREE)
6005 ; /* A complete type is ok. */
6006 else if (TREE_CODE (type) != ARRAY_TYPE)
6008 cp_error ("variable `%#D' has initializer but incomplete type",
6012 else if (TYPE_SIZE (complete_type (TREE_TYPE (type))) == NULL_TREE)
6014 if (DECL_LANG_SPECIFIC (decl) && DECL_TEMPLATE_INFO (decl))
6015 cp_error ("elements of array `%#D' have incomplete type", decl);
6016 /* else we already gave an error in start_decl. */
6022 && TREE_CODE (decl) != TYPE_DECL
6023 && TREE_CODE (decl) != TEMPLATE_DECL
6024 && IS_AGGR_TYPE (type) && ! DECL_EXTERNAL (decl))
6026 if ((! processing_template_decl || ! uses_template_parms (type))
6027 && TYPE_SIZE (complete_type (type)) == NULL_TREE)
6029 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6031 /* Change the type so that assemble_variable will give
6032 DECL an rtl we can live with: (mem (const_int 0)). */
6033 TREE_TYPE (decl) = error_mark_node;
6034 type = error_mark_node;
6038 /* If any base type in the hierarchy of TYPE needs a constructor,
6039 then we set initialized to 1. This way any nodes which are
6040 created for the purposes of initializing this aggregate
6041 will live as long as it does. This is necessary for global
6042 aggregates which do not have their initializers processed until
6043 the end of the file. */
6044 initialized = TYPE_NEEDS_CONSTRUCTING (type);
6049 /* We don't do this yet for GNU C++. */
6050 /* For a local variable, define the RTL now. */
6051 if (! toplevel_bindings_p ()
6052 /* But not if this is a duplicate decl
6053 and we preserved the rtl from the previous one
6054 (which may or may not happen). */
6055 && DECL_RTL (tem) == NULL_RTX)
6057 if (TYPE_SIZE (TREE_TYPE (tem)) != NULL_TREE)
6059 else if (TREE_CODE (TREE_TYPE (tem)) == ARRAY_TYPE
6060 && DECL_INITIAL (tem) != NULL_TREE)
6066 DECL_INITIAL (decl) = NULL_TREE;
6069 /* Handle initialization of references.
6070 These three arguments from from `cp_finish_decl', and have the
6071 same meaning here that they do there.
6073 Quotes on semantics can be found in ARM 8.4.3. */
6076 grok_reference_init (decl, type, init, cleanupp)
6077 tree decl, type, init;
6082 if (init == NULL_TREE)
6084 if ((DECL_LANG_SPECIFIC (decl) == 0
6085 || DECL_IN_AGGR_P (decl) == 0)
6086 && ! DECL_THIS_EXTERN (decl))
6088 cp_error ("`%D' declared as reference but not initialized", decl);
6089 if (TREE_CODE (decl) == VAR_DECL)
6090 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6095 if (init == error_mark_node)
6098 if (TREE_CODE (type) == REFERENCE_TYPE
6099 && TREE_CODE (init) == CONSTRUCTOR)
6101 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl);
6105 if (TREE_TYPE (init) && TREE_CODE (TREE_TYPE (init)) == UNKNOWN_TYPE)
6106 /* decay_conversion is probably wrong for references to functions. */
6107 init = decay_conversion (instantiate_type (TREE_TYPE (type), init, 1));
6109 if (TREE_CODE (init) == TREE_LIST)
6110 init = build_compound_expr (init);
6112 if (TREE_CODE (TREE_TYPE (init)) == REFERENCE_TYPE)
6113 init = convert_from_reference (init);
6115 if (TREE_CODE (TREE_TYPE (type)) != ARRAY_TYPE
6116 && TREE_CODE (TREE_TYPE (init)) == ARRAY_TYPE)
6118 /* Note: default conversion is only called in very special cases. */
6119 init = default_conversion (init);
6122 tmp = convert_to_reference
6123 (type, init, CONV_IMPLICIT, LOOKUP_SPECULATIVELY|LOOKUP_NORMAL, decl);
6125 if (tmp == error_mark_node)
6127 else if (tmp != NULL_TREE)
6130 DECL_INITIAL (decl) = save_expr (init);
6134 cp_error ("cannot initialize `%T' from `%T'", type, TREE_TYPE (init));
6138 /* ?? Can this be optimized in some cases to
6139 hand back the DECL_INITIAL slot?? */
6140 if (TYPE_SIZE (TREE_TYPE (type)))
6142 init = convert_from_reference (decl);
6143 if (TREE_PERMANENT (decl))
6144 init = copy_to_permanent (init);
6145 SET_DECL_REFERENCE_SLOT (decl, init);
6148 if (TREE_STATIC (decl) && ! TREE_CONSTANT (DECL_INITIAL (decl)))
6150 expand_static_init (decl, DECL_INITIAL (decl));
6151 DECL_INITIAL (decl) = NULL_TREE;
6156 if (TREE_CODE (decl) == VAR_DECL)
6157 SET_DECL_REFERENCE_SLOT (decl, error_mark_node);
6161 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6162 mucking with forces it does not comprehend (i.e. initialization with a
6163 constructor). If we are at global scope and won't go into COMMON, fill
6164 it in with a dummy CONSTRUCTOR to force the variable into .data;
6165 otherwise we can use error_mark_node. */
6168 obscure_complex_init (decl, init)
6171 if (! flag_no_inline && TREE_STATIC (decl))
6173 if (extract_init (decl, init))
6177 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6178 if (toplevel_bindings_p () && ! DECL_COMMON (decl))
6179 DECL_INITIAL (decl) = build (CONSTRUCTOR, TREE_TYPE (decl), NULL_TREE,
6183 DECL_INITIAL (decl) = error_mark_node;
6188 /* Finish processing of a declaration;
6189 install its line number and initial value.
6190 If the length of an array type is not known before,
6191 it must be determined now, from the initial value, or it is an error.
6193 Call `pop_obstacks' iff NEED_POP is nonzero.
6195 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6196 for aggregates that have constructors alive on the permanent obstack,
6197 so that the global initializing functions can be written at the end.
6199 INIT0 holds the value of an initializer that should be allowed to escape
6202 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6203 if the (init) syntax was used.
6205 For functions that take default parameters, DECL points to its
6206 "maximal" instantiation. `cp_finish_decl' must then also declared its
6207 subsequently lower and lower forms of instantiation, checking for
6208 ambiguity as it goes. This can be sped up later. */
6211 cp_finish_decl (decl, init, asmspec_tree, need_pop, flags)
6218 tree cleanup = NULL_TREE, ttype;
6220 int temporary = allocation_temporary_p ();
6221 char *asmspec = NULL;
6222 int was_readonly = 0;
6224 /* If this is 0, then we did not change obstacks. */
6228 error ("assignment (not initialization) in declaration");
6232 /* If a name was specified, get the string. */
6234 asmspec = TREE_STRING_POINTER (asmspec_tree);
6236 /* If the type of the thing we are declaring either has
6237 a constructor, or has a virtual function table pointer,
6238 AND its initialization was accepted by `start_decl',
6239 then we stayed on the permanent obstack through the
6240 declaration, otherwise, changed obstacks as GCC would. */
6242 type = TREE_TYPE (decl);
6244 if (type == error_mark_node)
6246 if (toplevel_bindings_p () && temporary)
6247 end_temporary_allocation ();
6252 if (processing_template_decl)
6254 if (init && DECL_INITIAL (decl))
6255 DECL_INITIAL (decl) = init;
6256 if (minimal_parse_mode && ! DECL_ARTIFICIAL (decl))
6258 tree stmt = DECL_VINDEX (decl);
6259 DECL_VINDEX (decl) = NULL_TREE;
6260 TREE_OPERAND (stmt, 2) = copy_to_permanent (init);
6266 /* Take care of TYPE_DECLs up front. */
6267 if (TREE_CODE (decl) == TYPE_DECL)
6269 if (init && DECL_INITIAL (decl))
6271 /* typedef foo = bar; store the type of bar as the type of foo. */
6272 TREE_TYPE (decl) = type = TREE_TYPE (init);
6273 DECL_INITIAL (decl) = init = NULL_TREE;
6275 if (type != error_mark_node
6276 && IS_AGGR_TYPE (type) && DECL_NAME (decl))
6278 if (TREE_TYPE (DECL_NAME (decl)) && TREE_TYPE (decl) != type)
6279 cp_warning ("shadowing previous type declaration of `%#D'", decl);
6280 set_identifier_type_value (DECL_NAME (decl), type);
6281 CLASSTYPE_GOT_SEMICOLON (type) = 1;
6283 GNU_xref_decl (current_function_decl, decl);
6285 /* If we have installed this as the canonical typedef for this
6286 type, and that type has not been defined yet, delay emitting
6287 the debug informaion for it, as we will emit it later. */
6288 if (TYPE_NAME (TREE_TYPE (decl)) == decl
6289 && TYPE_SIZE (TREE_TYPE (decl)) == NULL_TREE)
6290 TYPE_DECL_SUPPRESS_DEBUG (decl) = 1;
6292 rest_of_decl_compilation (decl, NULL_PTR,
6293 DECL_CONTEXT (decl) == NULL_TREE, at_eof);
6296 if (TREE_CODE (decl) != FUNCTION_DECL)
6298 ttype = target_type (type);
6301 if (! DECL_EXTERNAL (decl) && TREE_READONLY (decl)
6302 && TYPE_NEEDS_CONSTRUCTING (type))
6305 /* Currently, GNU C++ puts constants in text space, making them
6306 impossible to initialize. In the future, one would hope for
6307 an operating system which understood the difference between
6308 initialization and the running of a program. */
6310 TREE_READONLY (decl) = 0;
6313 if (TREE_CODE (decl) == FIELD_DECL)
6315 if (init && init != error_mark_node)
6316 my_friendly_assert (TREE_PERMANENT (init), 147);
6320 /* This must override the asm specifier which was placed
6321 by grokclassfn. Lay this out fresh. */
6322 DECL_RTL (TREE_TYPE (decl)) = NULL_RTX;
6323 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
6324 make_decl_rtl (decl, asmspec, 0);
6327 /* If `start_decl' didn't like having an initialization, ignore it now. */
6328 else if (init != NULL_TREE && DECL_INITIAL (decl) == NULL_TREE)
6330 else if (DECL_EXTERNAL (decl))
6332 else if (TREE_CODE (type) == REFERENCE_TYPE
6333 || (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE_REFERENCE (type)))
6335 if (TREE_STATIC (decl))
6336 make_decl_rtl (decl, NULL_PTR,
6337 toplevel_bindings_p ()
6338 || pseudo_global_level_p ());
6339 grok_reference_init (decl, type, init, &cleanup);
6343 GNU_xref_decl (current_function_decl, decl);
6345 if (TREE_CODE (decl) == FIELD_DECL)
6347 else if (TREE_CODE (decl) == CONST_DECL)
6349 my_friendly_assert (TREE_CODE (decl) != REFERENCE_TYPE, 148);
6351 DECL_INITIAL (decl) = init;
6353 /* This will keep us from needing to worry about our obstacks. */
6354 my_friendly_assert (init != NULL_TREE, 149);
6359 if (TYPE_HAS_CONSTRUCTOR (type) || TYPE_NEEDS_CONSTRUCTING (type))
6361 if (TREE_CODE (type) == ARRAY_TYPE)
6362 init = digest_init (type, init, (tree *) 0);
6363 else if (TREE_CODE (init) == CONSTRUCTOR)
6365 if (TYPE_NON_AGGREGATE_CLASS (type))
6367 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
6369 init = error_mark_node;
6372 goto dont_use_constructor;
6377 dont_use_constructor:
6378 if (TREE_CODE (init) != TREE_VEC)
6379 init = store_init_value (decl, init);
6383 /* We must hide the initializer so that expand_decl
6384 won't try to do something it does not understand. */
6385 init = obscure_complex_init (decl, init);
6387 else if (DECL_EXTERNAL (decl))
6389 else if (TREE_CODE_CLASS (TREE_CODE (type)) == 't'
6390 && (IS_AGGR_TYPE (type) || TYPE_NEEDS_CONSTRUCTING (type)))
6393 while (TREE_CODE (ctype) == ARRAY_TYPE)
6394 ctype = TREE_TYPE (ctype);
6395 if (! TYPE_NEEDS_CONSTRUCTING (ctype))
6397 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype))
6398 cp_error ("structure `%D' with uninitialized const members", decl);
6399 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype))
6400 cp_error ("structure `%D' with uninitialized reference members",
6404 if (TREE_CODE (decl) == VAR_DECL
6405 && !DECL_INITIAL (decl)
6406 && !TYPE_NEEDS_CONSTRUCTING (type)
6407 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
6408 cp_error ("uninitialized const `%D'", decl);
6410 if (TYPE_SIZE (type) != NULL_TREE
6411 && TYPE_NEEDS_CONSTRUCTING (type))
6412 init = obscure_complex_init (decl, NULL_TREE);
6414 else if (TREE_CODE (decl) == VAR_DECL
6415 && TREE_CODE (type) != REFERENCE_TYPE
6416 && (TYPE_READONLY (type) || TREE_READONLY (decl)))
6418 /* ``Unless explicitly declared extern, a const object does not have
6419 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
6420 However, if it's `const int foo = 1; const int foo;', don't complain
6421 about the second decl, since it does have an initializer before.
6422 We deliberately don't complain about arrays, because they're
6423 supposed to be initialized by a constructor. */
6424 if (! DECL_INITIAL (decl)
6425 && TREE_CODE (type) != ARRAY_TYPE
6426 && (!pedantic || !current_class_type))
6427 cp_error ("uninitialized const `%#D'", decl);
6430 /* For top-level declaration, the initial value was read in
6431 the temporary obstack. MAXINDEX, rtl, etc. to be made below
6432 must go in the permanent obstack; but don't discard the
6433 temporary data yet. */
6435 if (toplevel_bindings_p () && temporary)
6436 end_temporary_allocation ();
6438 /* Deduce size of array from initialization, if not already known. */
6440 if (TREE_CODE (type) == ARRAY_TYPE
6441 && TYPE_DOMAIN (type) == NULL_TREE
6442 && TREE_CODE (decl) != TYPE_DECL)
6445 = (TREE_STATIC (decl)
6446 /* Even if pedantic, an external linkage array
6447 may have incomplete type at first. */
6448 ? pedantic && ! DECL_EXTERNAL (decl)
6449 : !DECL_EXTERNAL (decl));
6450 tree initializer = init ? init : DECL_INITIAL (decl);
6451 int failure = complete_array_type (type, initializer, do_default);
6454 cp_error ("initializer fails to determine size of `%D'", decl);
6459 cp_error ("array size missing in `%D'", decl);
6460 /* If a `static' var's size isn't known, make it extern as
6461 well as static, so it does not get allocated. If it's not
6462 `static', then don't mark it extern; finish_incomplete_decl
6463 will give it a default size and it will get allocated. */
6464 else if (!pedantic && TREE_STATIC (decl) && !TREE_PUBLIC (decl))
6465 DECL_EXTERNAL (decl) = 1;
6468 if (pedantic && TYPE_DOMAIN (type) != NULL_TREE
6469 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type)),
6471 cp_error ("zero-size array `%D'", decl);
6473 layout_decl (decl, 0);
6476 if (TREE_CODE (decl) == VAR_DECL)
6478 if (DECL_SIZE (decl) == NULL_TREE
6479 && TYPE_SIZE (complete_type (TREE_TYPE (decl))) != NULL_TREE)
6480 layout_decl (decl, 0);
6482 if (TREE_STATIC (decl) && DECL_SIZE (decl) == NULL_TREE)
6484 /* A static variable with an incomplete type:
6485 that is an error if it is initialized.
6486 Otherwise, let it through, but if it is not `extern'
6487 then it may cause an error message later. */
6488 if (DECL_INITIAL (decl) != NULL_TREE)
6489 cp_error ("storage size of `%D' isn't known", decl);
6492 else if (!DECL_EXTERNAL (decl) && DECL_SIZE (decl) == NULL_TREE)
6494 /* An automatic variable with an incomplete type: that is an error.
6495 Don't talk about array types here, since we took care of that
6496 message in grokdeclarator. */
6497 cp_error ("storage size of `%D' isn't known", decl);
6498 TREE_TYPE (decl) = error_mark_node;
6500 else if (!DECL_EXTERNAL (decl) && IS_AGGR_TYPE (ttype))
6501 /* Let debugger know it should output info for this type. */
6502 note_debug_info_needed (ttype);
6504 if (TREE_STATIC (decl) && DECL_CONTEXT (decl)
6505 && TREE_CODE_CLASS (TREE_CODE (DECL_CONTEXT (decl))) == 't')
6506 note_debug_info_needed (DECL_CONTEXT (decl));
6508 if ((DECL_EXTERNAL (decl) || TREE_STATIC (decl))
6509 && DECL_SIZE (decl) != NULL_TREE
6510 && ! TREE_CONSTANT (DECL_SIZE (decl)))
6512 if (TREE_CODE (DECL_SIZE (decl)) == INTEGER_CST)
6513 constant_expression_warning (DECL_SIZE (decl));
6515 cp_error ("storage size of `%D' isn't constant", decl);
6518 if (! DECL_EXTERNAL (decl) && TYPE_NEEDS_DESTRUCTOR (type)
6519 /* Cleanups for static variables are handled by `finish_file'. */
6520 && ! TREE_STATIC (decl))
6522 int yes = suspend_momentary ();
6523 cleanup = maybe_build_cleanup (decl);
6524 resume_momentary (yes);
6527 /* PARM_DECLs get cleanups, too. */
6528 else if (TREE_CODE (decl) == PARM_DECL && TYPE_NEEDS_DESTRUCTOR (type))
6531 end_temporary_allocation ();
6532 cleanup = maybe_build_cleanup (decl);
6534 resume_temporary_allocation ();
6537 /* Output the assembler code and/or RTL code for variables and functions,
6538 unless the type is an undefined structure or union.
6539 If not, it will get done when the type is completed. */
6541 was_incomplete = (DECL_SIZE (decl) == NULL_TREE);
6543 if (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == FUNCTION_DECL
6544 || TREE_CODE (decl) == RESULT_DECL)
6546 /* ??? FIXME: What about nested classes? */
6547 int toplev = toplevel_bindings_p () || pseudo_global_level_p ();
6549 = ((flag_traditional
6550 || (TREE_STATIC (decl) && TYPE_NEEDS_DESTRUCTOR (type)))
6551 && allocation_temporary_p ());
6554 end_temporary_allocation ();
6556 if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl))
6557 make_decl_rtl (decl, NULL_PTR, toplev);
6558 else if (TREE_CODE (decl) == VAR_DECL
6559 && TREE_READONLY (decl)
6560 && DECL_INITIAL (decl) != NULL_TREE
6561 && DECL_INITIAL (decl) != error_mark_node
6562 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl)))
6564 DECL_INITIAL (decl) = save_expr (DECL_INITIAL (decl));
6567 DECL_ASSEMBLER_NAME (decl) = get_identifier (asmspec);
6570 && TREE_STATIC (decl)
6571 && ! TREE_SIDE_EFFECTS (decl)
6572 && ! TREE_PUBLIC (decl)
6573 && ! DECL_EXTERNAL (decl)
6574 && ! TYPE_NEEDS_DESTRUCTOR (type)
6575 && DECL_MODE (decl) != BLKmode)
6577 /* If this variable is really a constant, then fill its DECL_RTL
6578 slot with something which won't take up storage.
6579 If something later should take its address, we can always give
6580 it legitimate RTL at that time. */
6581 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
6582 store_expr (DECL_INITIAL (decl), DECL_RTL (decl), 0);
6583 TREE_ASM_WRITTEN (decl) = 1;
6585 else if (toplev && ! TREE_PUBLIC (decl))
6587 /* If this is a static const, change its apparent linkage
6588 if it belongs to a #pragma interface. */
6589 if (!interface_unknown)
6591 TREE_PUBLIC (decl) = 1;
6592 DECL_EXTERNAL (decl) = interface_only;
6594 make_decl_rtl (decl, asmspec, toplev);
6597 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6599 else if (TREE_CODE (decl) == VAR_DECL
6600 && DECL_LANG_SPECIFIC (decl)
6601 && DECL_IN_AGGR_P (decl))
6603 if (TREE_STATIC (decl))
6605 if (init == NULL_TREE
6606 #ifdef DEFAULT_STATIC_DEFS
6607 /* If this code is dead, then users must
6608 explicitly declare static member variables
6609 outside the class def'n as well. */
6610 && TYPE_NEEDS_CONSTRUCTING (type)
6614 DECL_EXTERNAL (decl) = 1;
6615 make_decl_rtl (decl, asmspec, 1);
6618 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6621 /* Just a constant field. Should not need any rtl. */
6625 rest_of_decl_compilation (decl, asmspec, toplev, at_eof);
6628 resume_temporary_allocation ();
6630 if (type != error_mark_node
6631 && TYPE_LANG_SPECIFIC (type)
6632 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
6633 abstract_virtuals_error (decl, type);
6634 else if ((TREE_CODE (type) == FUNCTION_TYPE
6635 || TREE_CODE (type) == METHOD_TYPE)
6636 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
6637 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type)))
6638 abstract_virtuals_error (decl, TREE_TYPE (type));
6640 if (TYPE_LANG_SPECIFIC (type) && IS_SIGNATURE (type))
6641 signature_error (decl, type);
6642 else if ((TREE_CODE (type) == FUNCTION_TYPE
6643 || TREE_CODE (type) == METHOD_TYPE)
6644 && TYPE_LANG_SPECIFIC (TREE_TYPE (type))
6645 && IS_SIGNATURE (TREE_TYPE (type)))
6646 signature_error (decl, TREE_TYPE (type));
6648 if (TREE_CODE (decl) == FUNCTION_DECL)
6650 else if (DECL_EXTERNAL (decl)
6651 && ! (DECL_LANG_SPECIFIC (decl)
6652 && DECL_NOT_REALLY_EXTERN (decl)))
6655 DECL_INITIAL (decl) = init;
6657 else if (TREE_STATIC (decl) && type != error_mark_node)
6659 /* Cleanups for static variables are handled by `finish_file'. */
6660 if (TYPE_NEEDS_CONSTRUCTING (type) || init != NULL_TREE
6661 || TYPE_NEEDS_DESTRUCTOR (type))
6662 expand_static_init (decl, init);
6666 extern int temp_slot_level;
6667 extern int target_temp_slot_level;
6668 tree old_cleanups = cleanups_this_call;
6669 int old_temp_level = target_temp_slot_level;
6671 /* This is a declared decl which must live until the
6672 end of the binding contour. It may need a cleanup. */
6674 /* Recompute the RTL of a local array now
6675 if it used to be an incomplete type. */
6676 if (was_incomplete && ! TREE_STATIC (decl))
6678 /* If we used it already as memory, it must stay in memory. */
6679 TREE_ADDRESSABLE (decl) = TREE_USED (decl);
6680 /* If it's still incomplete now, no init will save it. */
6681 if (DECL_SIZE (decl) == NULL_TREE)
6682 DECL_INITIAL (decl) = NULL_TREE;
6685 else if (! TREE_ASM_WRITTEN (decl)
6686 && (TYPE_SIZE (type) != NULL_TREE
6687 || TREE_CODE (type) == ARRAY_TYPE))
6689 /* Do this here, because we did not expand this decl's
6690 rtl in start_decl. */
6691 if (DECL_RTL (decl) == NULL_RTX)
6695 /* XXX: Why don't we use decl here? */
6696 /* Ans: Because it was already expanded? */
6697 if (! expand_decl_cleanup (NULL_TREE, cleanup))
6698 cp_error ("parser lost in parsing declaration of `%D'",
6700 /* Cleanup used up here. */
6701 cleanup = NULL_TREE;
6705 if (current_binding_level->is_for_scope)
6707 struct binding_level *outer = current_binding_level->level_chain;
6709 /* Check to see if the same name is already bound at
6710 the outer level, either because it was directly declared,
6711 or because a dead for-decl got preserved. In either case,
6712 the code would not have been valid under the traditional
6713 scope rules, so clear is_for_scope for the
6714 current_binding_level.
6716 Otherwise, we need to preserve the temp slot for decl
6717 to last into the outer binding level. */
6719 int handling_dead_for_vars = 0;
6720 tree link = outer->names;
6721 for (; ; link = TREE_CHAIN (link))
6723 if (link == NULL && handling_dead_for_vars == 0)
6725 link = outer->dead_vars_from_for;
6726 handling_dead_for_vars = 1;
6730 if (DECL_IN_MEMORY_P (decl))
6731 preserve_temp_slots (DECL_RTL (decl));
6734 if (DECL_NAME (link) == DECL_NAME (decl))
6736 if (handling_dead_for_vars)
6739 = purpose_member (DECL_NAME (decl),
6740 current_binding_level->shadowed);
6741 if (shadowing && TREE_VALUE (shadowing) == link)
6742 TREE_VALUE (shadowing)
6743 = DECL_SHADOWED_FOR_VAR (link);
6745 current_binding_level->is_for_scope = 0;
6753 target_temp_slot_level = temp_slot_level;
6755 if (DECL_SIZE (decl) && type != error_mark_node)
6757 /* Compute and store the initial value. */
6758 expand_decl_init (decl);
6760 if (init || TYPE_NEEDS_CONSTRUCTING (type))
6762 emit_line_note (DECL_SOURCE_FILE (decl),
6763 DECL_SOURCE_LINE (decl));
6764 expand_aggr_init (decl, init, 0, flags);
6767 /* Set this to 0 so we can tell whether an aggregate which
6768 was initialized was ever used. Don't do this if it has a
6769 destructor, so we don't complain about the 'resource
6770 allocation is initialization' idiom. */
6771 if (TYPE_NEEDS_CONSTRUCTING (type)
6772 && cleanup == NULL_TREE
6773 && DECL_NAME (decl))
6774 TREE_USED (decl) = 0;
6776 /* Cleanup any temporaries needed for the initial value. */
6777 expand_cleanups_to (old_cleanups);
6780 target_temp_slot_level = old_temp_level;
6782 if (DECL_SIZE (decl) && type != error_mark_node)
6784 /* Store the cleanup, if there was one. */
6787 if (! expand_decl_cleanup (decl, cleanup))
6788 cp_error ("parser lost in parsing declaration of `%D'",
6795 /* Undo call to `pushclass' that was done in `start_decl'
6796 due to initialization of qualified member variable.
6797 I.e., Foo::x = 10; */
6799 tree context = DECL_REAL_CONTEXT (decl);
6801 && TREE_CODE_CLASS (TREE_CODE (context)) == 't'
6802 && (TREE_CODE (decl) == VAR_DECL
6803 /* We also have a pushclass done that we need to undo here
6804 if we're at top level and declare a method. */
6805 || TREE_CODE (decl) == FUNCTION_DECL)
6806 /* If size hasn't been set, we're still defining it,
6807 and therefore inside the class body; don't pop
6808 the binding level.. */
6809 && TYPE_SIZE (context) != NULL_TREE
6810 && context == current_class_type)
6817 /* If requested, warn about definitions of large data objects. */
6819 if (warn_larger_than
6820 && ! processing_template_decl
6821 && (TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL)
6822 && !DECL_EXTERNAL (decl))
6824 register tree decl_size = DECL_SIZE (decl);
6826 if (decl_size && TREE_CODE (decl_size) == INTEGER_CST)
6828 unsigned units = TREE_INT_CST_LOW (decl_size) / BITS_PER_UNIT;
6830 if (units > larger_than_size)
6831 warning_with_decl (decl, "size of `%s' is %u bytes", units);
6837 /* Resume permanent allocation, if not within a function. */
6838 /* The corresponding push_obstacks_nochange is in start_decl,
6839 start_method, groktypename, and in grokfield. */
6844 TREE_READONLY (decl) = 1;
6847 /* This is here for a midend callback from c-common.c */
6850 finish_decl (decl, init, asmspec_tree)
6854 cp_finish_decl (decl, init, asmspec_tree, 1, 0);
6858 expand_static_init (decl, init)
6862 tree oldstatic = value_member (decl, static_aggregates);
6866 if (TREE_PURPOSE (oldstatic) && init != NULL_TREE)
6867 cp_error ("multiple initializations given for `%D'", decl);
6869 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
6871 /* Emit code to perform this initialization but once. */
6874 extern int temp_slot_level;
6875 extern int target_temp_slot_level;
6879 /* Remember this information until end of file. */
6880 push_obstacks (&permanent_obstack, &permanent_obstack);
6882 /* Emit code to perform this initialization but once. */
6883 temp = get_temp_name (integer_type_node, 1);
6884 rest_of_decl_compilation (temp, NULL_PTR, 0, 0);
6885 expand_start_cond (build_binary_op (EQ_EXPR, temp,
6886 integer_zero_node, 1), 0);
6887 old_cleanups = cleanups_this_call;
6888 old_temp_level = target_temp_slot_level;
6891 target_temp_slot_level = temp_slot_level;
6893 expand_assignment (temp, integer_one_node, 0, 0);
6894 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl))
6895 || (init && TREE_CODE (init) == TREE_LIST))
6897 expand_aggr_init (decl, init, 0, 0);
6898 do_pending_stack_adjust ();
6901 expand_assignment (decl, init, 0, 0);
6903 /* Cleanup any temporaries needed for the initial value. */
6904 expand_cleanups_to (old_cleanups);
6907 target_temp_slot_level = old_temp_level;
6909 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
6911 tree cleanup, fcall;
6912 static tree Atexit = 0;
6915 tree atexit_fndecl, PFV, pfvlist;
6916 /* Remember this information until end of file. */
6917 push_obstacks (&permanent_obstack, &permanent_obstack);
6918 PFV = build_pointer_type (build_function_type
6919 (void_type_node, void_list_node));
6921 pfvlist = tree_cons (NULL_TREE, PFV, void_list_node);
6923 push_lang_context (lang_name_c);
6925 builtin_function ("atexit",
6926 build_function_type (void_type_node,
6928 NOT_BUILT_IN, NULL_PTR);
6929 assemble_external (atexit_fndecl);
6930 Atexit = default_conversion (atexit_fndecl);
6931 pop_lang_context ();
6935 cleanup = start_anon_func ();
6936 expand_expr_stmt (build_cleanup (decl));
6938 mark_addressable (cleanup);
6939 cleanup = build_unary_op (ADDR_EXPR, cleanup, 0);
6940 fcall = build_function_call (Atexit, tree_cons (NULL_TREE, cleanup, NULL_TREE));
6941 expand_expr_stmt (fcall);
6945 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl)))
6947 static_aggregates = perm_tree_cons (temp, decl, static_aggregates);
6948 TREE_STATIC (static_aggregates) = 1;
6951 /* Resume old (possibly temporary) allocation. */
6956 /* This code takes into account memory allocation
6957 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
6958 does not hold for this object, then we must make permanent
6959 the storage currently in the temporary obstack. */
6960 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl)))
6961 preserve_initializer ();
6962 static_aggregates = perm_tree_cons (init, decl, static_aggregates);
6966 /* Make TYPE a complete type based on INITIAL_VALUE.
6967 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
6968 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
6971 complete_array_type (type, initial_value, do_default)
6972 tree type, initial_value;
6975 register tree maxindex = NULL_TREE;
6980 /* Note MAXINDEX is really the maximum index,
6981 one less than the size. */
6982 if (TREE_CODE (initial_value) == STRING_CST)
6985 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value)));
6986 maxindex = build_int_2 ((TREE_STRING_LENGTH (initial_value)
6989 else if (TREE_CODE (initial_value) == CONSTRUCTOR)
6991 tree elts = CONSTRUCTOR_ELTS (initial_value);
6992 maxindex = size_binop (MINUS_EXPR, integer_zero_node, size_one_node);
6993 for (; elts; elts = TREE_CHAIN (elts))
6995 if (TREE_PURPOSE (elts))
6996 maxindex = TREE_PURPOSE (elts);
6998 maxindex = size_binop (PLUS_EXPR, maxindex, size_one_node);
7000 maxindex = copy_node (maxindex);
7004 /* Make an error message unless that happened already. */
7005 if (initial_value != error_mark_node)
7008 /* Prevent further error messages. */
7009 maxindex = build_int_2 (0, 0);
7016 maxindex = build_int_2 (0, 0);
7024 TYPE_DOMAIN (type) = build_index_type (maxindex);
7025 if (! TREE_TYPE (maxindex))
7026 TREE_TYPE (maxindex) = TYPE_DOMAIN (type);
7028 itype = TREE_TYPE (initial_value);
7031 if (itype && !TYPE_DOMAIN (itype))
7032 TYPE_DOMAIN (itype) = TYPE_DOMAIN (type);
7033 /* The type of the main variant should never be used for arrays
7034 of different sizes. It should only ever be completed with the
7035 size of the array. */
7036 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)))
7037 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)) = TYPE_DOMAIN (type);
7040 /* Lay out the type now that we can get the real answer. */
7047 /* Return zero if something is declared to be a member of type
7048 CTYPE when in the context of CUR_TYPE. STRING is the error
7049 message to print in that case. Otherwise, quietly return 1. */
7052 member_function_or_else (ctype, cur_type, string)
7053 tree ctype, cur_type;
7056 if (ctype && ctype != cur_type)
7058 error (string, TYPE_NAME_STRING (ctype));
7064 /* Subroutine of `grokdeclarator'. */
7066 /* Generate errors possibly applicable for a given set of specifiers.
7067 This is for ARM $7.1.2. */
7070 bad_specifiers (object, type, virtualp, quals, inlinep, friendp, raises)
7073 int virtualp, quals, friendp, raises, inlinep;
7076 cp_error ("`%D' declared as a `virtual' %s", object, type);
7078 cp_error ("`%D' declared as an `inline' %s", object, type);
7080 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7083 cp_error_at ("invalid friend declaration", object);
7085 cp_error_at ("invalid exception specifications", object);
7088 /* CTYPE is class type, or null if non-class.
7089 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7091 DECLARATOR is the function's name.
7092 VIRTUALP is truthvalue of whether the function is virtual or not.
7093 FLAGS are to be passed through to `grokclassfn'.
7094 QUALS are qualifiers indicating whether the function is `const'
7096 RAISES is a list of exceptions that this function can raise.
7097 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7098 not look, and -1 if we should not call `grokclassfn' at all. */
7101 grokfndecl (ctype, type, declarator, virtualp, flags, quals,
7102 raises, attrlist, check, publicp, inlinep, funcdef_flag)
7106 enum overload_flags flags;
7107 tree quals, raises, attrlist;
7108 int check, publicp, inlinep, funcdef_flag;
7111 int staticp = ctype && TREE_CODE (type) == FUNCTION_TYPE;
7114 cname = TREE_CODE (TYPE_NAME (ctype)) == TYPE_DECL
7115 ? TYPE_IDENTIFIER (ctype) : TYPE_NAME (ctype);
7121 type = build_exception_variant (type, raises);
7124 decl = build_lang_decl (FUNCTION_DECL, declarator, type);
7125 /* propagate volatile out from type to decl */
7126 if (TYPE_VOLATILE (type))
7127 TREE_THIS_VOLATILE (decl) = 1;
7129 /* Should probably propagate const out from type to decl I bet (mrs). */
7132 DECL_STATIC_FUNCTION_P (decl) = 1;
7133 DECL_CONTEXT (decl) = ctype;
7137 DECL_CLASS_CONTEXT (decl) = ctype;
7139 /* All function decls start out public; we'll fix their linkage later (at
7140 definition or EOF) if appropriate. */
7141 TREE_PUBLIC (decl) = 1;
7143 if (ctype == NULL_TREE && ! strcmp (IDENTIFIER_POINTER (declarator), "main"))
7146 error ("cannot declare `main' to be inline");
7148 error ("cannot declare `main' to be static");
7154 DECL_C_STATIC (decl) = 1;
7157 DECL_THIS_INLINE (decl) = DECL_INLINE (decl) = 1;
7159 DECL_EXTERNAL (decl) = 1;
7160 if (quals != NULL_TREE && TREE_CODE (type) == FUNCTION_TYPE)
7162 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7163 (ctype ? "static " : "non-"), decl, TREE_VALUE (quals));
7167 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl)))
7168 grok_op_properties (decl, virtualp, check < 0);
7170 if (ctype && hack_decl_function_context (decl))
7171 DECL_NO_STATIC_CHAIN (decl) = 1;
7173 /* Caller will do the rest of this. */
7177 if (check && funcdef_flag)
7178 DECL_INITIAL (decl) = error_mark_node;
7180 if (flags == NO_SPECIAL && ctype && constructor_name (cname) == declarator)
7183 /* Just handle constructors here. We could do this
7184 inside the following if stmt, but I think
7185 that the code is more legible by breaking this
7186 case out. See comments below for what each of
7187 the following calls is supposed to do. */
7188 DECL_CONSTRUCTOR_P (decl) = 1;
7190 grokclassfn (ctype, declarator, decl, flags, quals);
7193 tmp = check_classfn (ctype, decl);
7194 if (tmp && DECL_ARTIFICIAL (tmp))
7195 cp_error ("definition of implicitly-declared `%D'", tmp);
7196 if (tmp && duplicate_decls (decl, tmp))
7199 if (! grok_ctor_properties (ctype, decl))
7202 if (check == 0 && ! current_function_decl)
7204 /* FIXME: this should only need to look at
7205 IDENTIFIER_GLOBAL_VALUE. */
7206 tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0);
7207 if (tmp == NULL_TREE)
7208 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl;
7209 else if (TREE_CODE (tmp) != TREE_CODE (decl))
7210 cp_error ("inconsistent declarations for `%D'", decl);
7213 duplicate_decls (decl, tmp);
7215 /* avoid creating circularities. */
7216 DECL_CHAIN (decl) = NULL_TREE;
7218 make_decl_rtl (decl, NULL_PTR, 1);
7225 /* Function gets the ugly name, field gets the nice one.
7226 This call may change the type of the function (because
7227 of default parameters)! */
7228 if (ctype != NULL_TREE)
7229 grokclassfn (ctype, cname, decl, flags, quals);
7231 if (ctype != NULL_TREE && check)
7233 tmp = check_classfn (ctype, decl);
7234 if (tmp && DECL_STATIC_FUNCTION_P (tmp)
7235 && TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE)
7237 /* Remove the `this' parm added by grokclassfn.
7238 XXX Isn't this done in start_function, too? */
7239 revert_static_member_fn (&decl, NULL, NULL);
7240 last_function_parms = TREE_CHAIN (last_function_parms);
7242 if (tmp && DECL_ARTIFICIAL (tmp))
7243 cp_error ("definition of implicitly-declared `%D'", tmp);
7244 if (tmp && duplicate_decls (decl, tmp))
7248 if (ctype == NULL_TREE || check)
7251 /* Now install the declaration of this function so that others may
7252 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
7254 if (! current_function_decl)
7256 /* FIXME: this should only need to look at
7257 IDENTIFIER_GLOBAL_VALUE. */
7258 tmp = lookup_name (DECL_ASSEMBLER_NAME (decl), 0);
7259 if (tmp == NULL_TREE)
7260 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl)) = decl;
7261 else if (TREE_CODE (tmp) != TREE_CODE (decl))
7262 cp_error ("inconsistent declarations for `%D'", decl);
7265 duplicate_decls (decl, tmp);
7267 /* avoid creating circularities. */
7268 DECL_CHAIN (decl) = NULL_TREE;
7272 cplus_decl_attributes (decl, TREE_PURPOSE (attrlist),
7273 TREE_VALUE (attrlist));
7274 make_decl_rtl (decl, NULL_PTR, 1);
7278 DECL_VIRTUAL_P (decl) = 1;
7279 if (DECL_VINDEX (decl) == NULL_TREE)
7280 DECL_VINDEX (decl) = error_mark_node;
7281 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl)) = 1;
7288 grokvardecl (type, declarator, specbits, initialized, constp)
7291 RID_BIT_TYPE specbits;
7297 if (TREE_CODE (type) == OFFSET_TYPE)
7299 /* If you declare a static member so that it
7300 can be initialized, the code will reach here. */
7301 tree basetype = TYPE_OFFSET_BASETYPE (type);
7302 type = TREE_TYPE (type);
7303 decl = build_lang_field_decl (VAR_DECL, declarator, type);
7304 DECL_CONTEXT (decl) = basetype;
7305 DECL_CLASS_CONTEXT (decl) = basetype;
7306 DECL_ASSEMBLER_NAME (decl) = build_static_name (basetype, declarator);
7309 decl = build_decl (VAR_DECL, declarator, complete_type (type));
7311 DECL_ASSEMBLER_NAME (decl) = current_namespace_id (DECL_ASSEMBLER_NAME (decl));
7313 if (RIDBIT_SETP (RID_EXTERN, specbits))
7315 DECL_THIS_EXTERN (decl) = 1;
7316 DECL_EXTERNAL (decl) = !initialized;
7319 /* In class context, static means one per class,
7320 public access, and static storage. */
7321 if (DECL_FIELD_CONTEXT (decl) != NULL_TREE
7322 && IS_AGGR_TYPE (DECL_FIELD_CONTEXT (decl)))
7324 TREE_PUBLIC (decl) = 1;
7325 TREE_STATIC (decl) = 1;
7326 DECL_EXTERNAL (decl) = 0;
7328 /* At top level, either `static' or no s.c. makes a definition
7329 (perhaps tentative), and absence of `static' makes it public. */
7330 else if (toplevel_bindings_p ())
7332 TREE_PUBLIC (decl) = (RIDBIT_NOTSETP (RID_STATIC, specbits)
7333 && (DECL_THIS_EXTERN (decl) || ! constp));
7334 TREE_STATIC (decl) = ! DECL_EXTERNAL (decl);
7336 /* Not at top level, only `static' makes a static definition. */
7339 TREE_STATIC (decl) = !! RIDBIT_SETP (RID_STATIC, specbits);
7340 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl);
7345 /* Create a canonical pointer to member function type. */
7348 build_ptrmemfunc_type (type)
7355 /* If a canonical type already exists for this type, use it. We use
7356 this method instead of type_hash_canon, because it only does a
7357 simple equality check on the list of field members. */
7359 if ((t = TYPE_GET_PTRMEMFUNC_TYPE (type)))
7362 push_obstacks (TYPE_OBSTACK (type), TYPE_OBSTACK (type));
7364 u = make_lang_type (UNION_TYPE);
7365 IS_AGGR_TYPE (u) = 0;
7366 fields[0] = build_lang_field_decl (FIELD_DECL, pfn_identifier, type);
7367 fields[1] = build_lang_field_decl (FIELD_DECL, delta2_identifier,
7369 finish_builtin_type (u, "__ptrmemfunc_type", fields, 1, ptr_type_node);
7370 TYPE_NAME (u) = NULL_TREE;
7372 t = make_lang_type (RECORD_TYPE);
7374 /* Let the front-end know this is a pointer to member function. */
7375 TYPE_PTRMEMFUNC_FLAG (t) = 1;
7376 /* and not really an aggregate. */
7377 IS_AGGR_TYPE (t) = 0;
7379 fields[0] = build_lang_field_decl (FIELD_DECL, delta_identifier,
7381 fields[1] = build_lang_field_decl (FIELD_DECL, index_identifier,
7383 fields[2] = build_lang_field_decl (FIELD_DECL, pfn_or_delta2_identifier, u);
7384 finish_builtin_type (t, "__ptrmemfunc_type", fields, 2, ptr_type_node);
7388 /* Zap out the name so that the back-end will give us the debugging
7389 information for this anonymous RECORD_TYPE. */
7390 TYPE_NAME (t) = NULL_TREE;
7392 TYPE_SET_PTRMEMFUNC_TYPE (type, t);
7394 /* Seems to be wanted. */
7395 CLASSTYPE_GOT_SEMICOLON (t) = 1;
7399 /* Given declspecs and a declarator,
7400 determine the name and type of the object declared
7401 and construct a ..._DECL node for it.
7402 (In one case we can return a ..._TYPE node instead.
7403 For invalid input we sometimes return 0.)
7405 DECLSPECS is a chain of tree_list nodes whose value fields
7406 are the storage classes and type specifiers.
7408 DECL_CONTEXT says which syntactic context this declaration is in:
7409 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
7410 FUNCDEF for a function definition. Like NORMAL but a few different
7411 error messages in each case. Return value may be zero meaning
7412 this definition is too screwy to try to parse.
7413 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
7414 handle member functions (which have FIELD context).
7415 Return value may be zero meaning this definition is too screwy to
7417 PARM for a parameter declaration (either within a function prototype
7418 or before a function body). Make a PARM_DECL, or return void_type_node.
7419 CATCHPARM for a parameter declaration before a catch clause.
7420 TYPENAME if for a typename (in a cast or sizeof).
7421 Don't make a DECL node; just return the ..._TYPE node.
7422 FIELD for a struct or union field; make a FIELD_DECL.
7423 BITFIELD for a field with specified width.
7424 INITIALIZED is 1 if the decl has an initializer.
7426 In the TYPENAME case, DECLARATOR is really an absolute declarator.
7427 It may also be so in the PARM case, for a prototype where the
7428 argument type is specified but not the name.
7430 This function is where the complicated C meanings of `static'
7431 and `extern' are interpreted.
7433 For C++, if there is any monkey business to do, the function which
7434 calls this one must do it, i.e., prepending instance variables,
7435 renaming overloaded function names, etc.
7437 Note that for this C++, it is an error to define a method within a class
7438 which does not belong to that class.
7440 Except in the case where SCOPE_REFs are implicitly known (such as
7441 methods within a class being redundantly qualified),
7442 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
7443 (class_name::decl_name). The caller must also deal with this.
7445 If a constructor or destructor is seen, and the context is FIELD,
7446 then the type gains the attribute TREE_HAS_x. If such a declaration
7447 is erroneous, NULL_TREE is returned.
7449 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
7450 function, these are the qualifiers to give to the `this' pointer.
7452 May return void_type_node if the declarator turned out to be a friend.
7453 See grokfield for details. */
7455 enum return_types { return_normal, return_ctor, return_dtor, return_conversion };
7458 grokdeclarator (declarator, declspecs, decl_context, initialized, attrlist)
7461 enum decl_context decl_context;
7465 RID_BIT_TYPE specbits;
7468 tree type = NULL_TREE;
7472 int virtualp, explicitp, friendp, inlinep, staticp;
7473 int explicit_int = 0;
7474 int explicit_char = 0;
7475 int opaque_typedef = 0;
7476 tree typedef_decl = NULL_TREE;
7478 tree typedef_type = NULL_TREE;
7479 int funcdef_flag = 0;
7480 enum tree_code innermost_code = ERROR_MARK;
7483 /* See the code below that used this. */
7484 tree decl_machine_attr = NULL_TREE;
7486 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
7487 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
7488 tree init = NULL_TREE;
7490 /* Keep track of what sort of function is being processed
7491 so that we can warn about default return values, or explicit
7492 return values which do not match prescribed defaults. */
7493 enum return_types return_type = return_normal;
7495 tree dname = NULL_TREE;
7496 tree ctype = current_class_type;
7497 tree ctor_return_type = NULL_TREE;
7498 enum overload_flags flags = NO_SPECIAL;
7499 tree quals = NULL_TREE;
7500 tree raises = NULL_TREE;
7502 RIDBIT_RESET_ALL (specbits);
7503 if (decl_context == FUNCDEF)
7504 funcdef_flag = 1, decl_context = NORMAL;
7505 else if (decl_context == MEMFUNCDEF)
7506 funcdef_flag = -1, decl_context = FIELD;
7507 else if (decl_context == BITFIELD)
7508 bitfield = 1, decl_context = FIELD;
7510 if (flag_traditional && allocation_temporary_p ())
7511 end_temporary_allocation ();
7513 /* Look inside a declarator for the name being declared
7514 and get it as a string, for an error message. */
7516 tree *next = &declarator;
7520 while (next && *next)
7523 switch (TREE_CODE (decl))
7527 next = &TREE_OPERAND (decl, 0);
7530 case BIT_NOT_EXPR: /* for C++ destructors! */
7532 tree name = TREE_OPERAND (decl, 0);
7533 tree rename = NULL_TREE;
7535 my_friendly_assert (flags == NO_SPECIAL, 152);
7537 return_type = return_dtor;
7538 if (TREE_CODE (name) == TYPE_DECL)
7539 TREE_OPERAND (decl, 0) = name = constructor_name (name);
7540 my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 153);
7541 if (ctype == NULL_TREE)
7543 if (current_class_type == NULL_TREE)
7545 error ("destructors must be member functions");
7550 tree t = constructor_name (current_class_name);
7557 tree t = constructor_name (ctype);
7564 cp_error ("destructor `%T' must match class name `%T'",
7566 TREE_OPERAND (decl, 0) = rename;
7572 case ADDR_EXPR: /* C++ reference declaration */
7577 innermost_code = TREE_CODE (decl);
7578 next = &TREE_OPERAND (decl, 0);
7582 if (parmlist_is_exprlist (TREE_OPERAND (decl, 1)))
7584 /* This is actually a variable declaration using constructor
7585 syntax. We need to call start_decl and cp_finish_decl so we
7586 can get the variable initialized... */
7588 *next = TREE_OPERAND (decl, 0);
7589 init = TREE_OPERAND (decl, 1);
7591 decl = start_decl (declarator, declspecs, 1);
7592 finish_decl (decl, init, NULL_TREE);
7595 innermost_code = TREE_CODE (decl);
7596 if (decl_context == FIELD && ctype == NULL_TREE)
7597 ctype = current_class_type;
7599 && TREE_OPERAND (decl, 0)
7600 && (TREE_CODE (TREE_OPERAND (decl, 0)) == TYPE_DECL
7601 && ((DECL_NAME (TREE_OPERAND (decl, 0))
7602 == constructor_name_full (ctype))
7603 || (DECL_NAME (TREE_OPERAND (decl, 0))
7604 == constructor_name (ctype)))))
7605 TREE_OPERAND (decl, 0) = constructor_name (ctype);
7606 next = &TREE_OPERAND (decl, 0);
7608 if (ctype != NULL_TREE
7609 && decl != NULL_TREE && flags != DTOR_FLAG
7610 && decl == constructor_name (ctype))
7612 return_type = return_ctor;
7613 ctor_return_type = ctype;
7618 case IDENTIFIER_NODE:
7624 cp_error ("declarator-id missing; using reserved word `%D'",
7626 name = IDENTIFIER_POINTER (dname);
7628 if (! IDENTIFIER_OPNAME_P (dname)
7629 /* Linux headers use '__op'. Arrgh. */
7630 || IDENTIFIER_TYPENAME_P (dname) && ! TREE_TYPE (dname))
7631 name = IDENTIFIER_POINTER (dname);
7634 if (IDENTIFIER_TYPENAME_P (dname))
7636 my_friendly_assert (flags == NO_SPECIAL, 154);
7637 flags = TYPENAME_FLAG;
7638 ctor_return_type = TREE_TYPE (dname);
7639 return_type = return_conversion;
7641 name = operator_name_string (dname);
7648 /* Perform error checking, and decide on a ctype. */
7649 tree cname = TREE_OPERAND (decl, 0);
7650 if (cname == NULL_TREE)
7652 else if (! is_aggr_type (cname, 1))
7653 TREE_OPERAND (decl, 0) = NULL_TREE;
7654 /* Must test TREE_OPERAND (decl, 1), in case user gives
7655 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
7656 else if (TREE_OPERAND (decl, 1)
7657 && TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)
7659 else if (TREE_CODE (cname) == TEMPLATE_TYPE_PARM)
7661 cp_error ("`%T::%D' is not a valid declarator", cname,
7662 TREE_OPERAND (decl, 1));
7663 cp_error (" perhaps you want `typename %T::%D' to make it a type",
7664 cname, TREE_OPERAND (decl, 1));
7665 return void_type_node;
7667 else if (ctype == NULL_TREE)
7669 else if (TREE_COMPLEXITY (decl) == current_class_depth)
7670 TREE_OPERAND (decl, 0) = ctype;
7673 if (! UNIQUELY_DERIVED_FROM_P (cname, ctype))
7675 cp_error ("type `%T' is not derived from type `%T'",
7677 TREE_OPERAND (decl, 0) = NULL_TREE;
7683 if (ctype && TREE_CODE (TREE_OPERAND (decl, 1)) == TYPE_DECL
7684 && ((DECL_NAME (TREE_OPERAND (decl, 1))
7685 == constructor_name_full (ctype))
7686 || (DECL_NAME (TREE_OPERAND (decl, 1))
7687 == constructor_name (ctype))))
7688 TREE_OPERAND (decl, 1) = constructor_name (ctype);
7689 next = &TREE_OPERAND (decl, 1);
7693 if (TREE_CODE (decl) == IDENTIFIER_NODE
7694 && constructor_name (ctype) == decl)
7696 return_type = return_ctor;
7697 ctor_return_type = ctype;
7699 else if (TREE_CODE (decl) == BIT_NOT_EXPR
7700 && TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE
7701 && (constructor_name (ctype) == TREE_OPERAND (decl, 0)
7702 || constructor_name_full (ctype) == TREE_OPERAND (decl, 0)))
7704 return_type = return_dtor;
7705 ctor_return_type = ctype;
7707 TREE_OPERAND (decl, 0) = constructor_name (ctype);
7708 next = &TREE_OPERAND (decl, 0);
7719 /* Parse error puts this typespec where
7720 a declarator should go. */
7721 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl));
7722 if (TREE_TYPE (decl) == current_class_type)
7723 cp_error (" perhaps you want `%T' for a constructor",
7724 current_class_name);
7725 dname = DECL_NAME (decl);
7726 name = IDENTIFIER_POINTER (dname);
7728 /* Avoid giving two errors for this. */
7729 IDENTIFIER_CLASS_VALUE (dname) = NULL_TREE;
7731 declspecs = temp_tree_cons (NULL_TREE, integer_type_node,
7738 cp_compiler_error ("`%D' as declarator", decl);
7739 return 0; /* We used to do a 155 abort here. */
7746 /* A function definition's declarator must have the form of
7747 a function declarator. */
7749 if (funcdef_flag && innermost_code != CALL_EXPR)
7752 if (((dname && IDENTIFIER_OPNAME_P (dname)) || flags == TYPENAME_FLAG)
7753 && innermost_code != CALL_EXPR
7754 && ! (ctype && declspecs == NULL_TREE))
7756 cp_error ("declaration of `%D' as non-function", dname);
7757 return void_type_node;
7760 /* Anything declared one level down from the top level
7761 must be one of the parameters of a function
7762 (because the body is at least two levels down). */
7764 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
7765 by not allowing C++ class definitions to specify their parameters
7766 with xdecls (must be spec.d in the parmlist).
7768 Since we now wait to push a class scope until we are sure that
7769 we are in a legitimate method context, we must set oldcname
7770 explicitly (since current_class_name is not yet alive).
7772 We also want to avoid calling this a PARM if it is in a namespace. */
7774 if (decl_context == NORMAL && ! namespace_bindings_p ()
7775 && ! pseudo_global_level_p ())
7777 struct binding_level *b = current_binding_level;
7778 current_binding_level = b->level_chain;
7779 if (current_binding_level != 0 && toplevel_bindings_p ())
7780 decl_context = PARM;
7781 current_binding_level = b;
7784 /* Look through the decl specs and record which ones appear.
7785 Some typespecs are defined as built-in typenames.
7786 Others, the ones that are modifiers of other types,
7787 are represented by bits in SPECBITS: set the bits for
7788 the modifiers that appear. Storage class keywords are also in SPECBITS.
7790 If there is a typedef name or a type, store the type in TYPE.
7791 This includes builtin typedefs such as `int'.
7793 Set EXPLICIT_INT if the type is `int' or `char' and did not
7794 come from a user typedef.
7796 Set LONGLONG if `long' is mentioned twice.
7798 For C++, constructors and destructors have their own fast treatment. */
7800 for (spec = declspecs; spec; spec = TREE_CHAIN (spec))
7805 /* Certain parse errors slip through. For example,
7806 `int class;' is not caught by the parser. Try
7807 weakly to recover here. */
7808 if (TREE_CODE (spec) != TREE_LIST)
7811 id = TREE_VALUE (spec);
7813 if (TREE_CODE (id) == IDENTIFIER_NODE)
7815 if (id == ridpointers[(int) RID_INT]
7816 || id == ridpointers[(int) RID_CHAR]
7817 || id == ridpointers[(int) RID_BOOL]
7818 || id == ridpointers[(int) RID_WCHAR])
7822 if (id == ridpointers[(int) RID_BOOL])
7823 error ("`bool' is now a keyword");
7825 cp_error ("extraneous `%T' ignored", id);
7829 if (id == ridpointers[(int) RID_INT])
7831 else if (id == ridpointers[(int) RID_CHAR])
7833 type = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id));
7837 /* C++ aggregate types. */
7838 if (IDENTIFIER_HAS_TYPE_VALUE (id))
7841 cp_error ("multiple declarations `%T' and `%T'", type, id);
7843 type = IDENTIFIER_TYPE_VALUE (id);
7847 for (i = (int) RID_FIRST_MODIFIER; i <= (int) RID_LAST_MODIFIER; i++)
7849 if (ridpointers[i] == id)
7851 if (i == (int) RID_LONG && RIDBIT_SETP (i, specbits))
7853 if (pedantic && ! in_system_header)
7854 pedwarn ("ANSI C++ does not support `long long'");
7856 error ("`long long long' is too long for GCC");
7860 else if (RIDBIT_SETP (i, specbits))
7861 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id));
7862 RIDBIT_SET (i, specbits);
7867 /* C++ aggregate types. */
7868 else if (TREE_CODE (id) == TYPE_DECL)
7871 cp_error ("multiple declarations `%T' and `%T'", type,
7875 type = TREE_TYPE (id);
7876 if (TREE_CODE (type) == TYPENAME_TYPE
7877 && TYPE_CONTEXT (type) == current_class_type)
7879 /* Members of the current class get resolved immediately;
7880 we couldn't catch this one earlier because we hadn't
7881 pushed into the class yet. */
7882 if (TREE_TYPE (type))
7883 type = TREE_TYPE (type);
7885 type = make_typename_type (TYPE_CONTEXT (type),
7886 TYPE_IDENTIFIER (type));
7888 TREE_VALUE (spec) = type;
7893 error ("two or more data types in declaration of `%s'", name);
7894 else if (TREE_CODE (id) == IDENTIFIER_NODE)
7896 register tree t = lookup_name (id, 1);
7897 if (!t || TREE_CODE (t) != TYPE_DECL)
7898 error ("`%s' fails to be a typedef or built in type",
7899 IDENTIFIER_POINTER (id));
7902 type = TREE_TYPE (t);
7904 /* See the code below that used this. */
7905 decl_machine_attr = DECL_MACHINE_ATTRIBUTES (id);
7910 else if (TREE_CODE (id) != ERROR_MARK)
7911 /* Can't change CLASS nodes into RECORD nodes here! */
7917 typedef_type = type;
7919 /* No type at all: default to `int', and set EXPLICIT_INT
7920 because it was not a user-defined typedef.
7921 Except when we have a `typedef' inside a signature, in
7922 which case the type defaults to `unknown type' and is
7923 instantiated when assigning to a signature pointer or ref. */
7925 if (type == NULL_TREE
7926 && (RIDBIT_SETP (RID_SIGNED, specbits)
7927 || RIDBIT_SETP (RID_UNSIGNED, specbits)
7928 || RIDBIT_SETP (RID_LONG, specbits)
7929 || RIDBIT_SETP (RID_SHORT, specbits)))
7931 /* These imply 'int'. */
7932 type = integer_type_node;
7936 if (type == NULL_TREE)
7939 if (return_type == return_dtor)
7940 type = void_type_node;
7941 else if (return_type == return_ctor)
7942 type = build_pointer_type (ctor_return_type);
7943 else if (return_type == return_conversion)
7944 type = ctor_return_type;
7945 else if (current_class_type
7946 && IS_SIGNATURE (current_class_type)
7947 && RIDBIT_SETP (RID_TYPEDEF, specbits)
7948 && (decl_context == FIELD || decl_context == NORMAL))
7952 type = copy_node (opaque_type_node);
7958 if (warn_return_type
7959 && return_type == return_normal)
7960 /* Save warning until we know what is really going on. */
7961 warn_about_return_type = 1;
7963 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
7964 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
7965 else if (declspecs == NULL_TREE &&
7966 (innermost_code != CALL_EXPR || pedantic))
7967 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type or storage class",
7969 type = integer_type_node;
7972 else if (return_type == return_dtor)
7974 error ("return type specification for destructor invalid");
7975 type = void_type_node;
7977 else if (return_type == return_ctor)
7979 error ("return type specification for constructor invalid");
7980 type = build_pointer_type (ctor_return_type);
7982 else if (return_type == return_conversion)
7984 if (comptypes (type, ctor_return_type, 1) == 0)
7985 cp_error ("operator `%T' declared to return `%T'",
7986 ctor_return_type, type);
7988 cp_pedwarn ("return type specified for `operator %T'",
7991 type = ctor_return_type;
7996 /* Now process the modifiers that were specified
7997 and check for invalid combinations. */
7999 /* Long double is a special combination. */
8001 if (RIDBIT_SETP (RID_LONG, specbits)
8002 && TYPE_MAIN_VARIANT (type) == double_type_node)
8004 RIDBIT_RESET (RID_LONG, specbits);
8005 type = build_type_variant (long_double_type_node, TYPE_READONLY (type),
8006 TYPE_VOLATILE (type));
8009 /* Check all other uses of type modifiers. */
8011 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
8012 || RIDBIT_SETP (RID_SIGNED, specbits)
8013 || RIDBIT_SETP (RID_LONG, specbits)
8014 || RIDBIT_SETP (RID_SHORT, specbits))
8018 if (TREE_CODE (type) == REAL_TYPE)
8019 error ("short, signed or unsigned invalid for `%s'", name);
8020 else if (TREE_CODE (type) != INTEGER_TYPE)
8021 error ("long, short, signed or unsigned invalid for `%s'", name);
8022 else if (RIDBIT_SETP (RID_LONG, specbits)
8023 && RIDBIT_SETP (RID_SHORT, specbits))
8024 error ("long and short specified together for `%s'", name);
8025 else if ((RIDBIT_SETP (RID_LONG, specbits)
8026 || RIDBIT_SETP (RID_SHORT, specbits))
8028 error ("long or short specified with char for `%s'", name);
8029 else if ((RIDBIT_SETP (RID_LONG, specbits)
8030 || RIDBIT_SETP (RID_SHORT, specbits))
8031 && TREE_CODE (type) == REAL_TYPE)
8032 error ("long or short specified with floating type for `%s'", name);
8033 else if (RIDBIT_SETP (RID_SIGNED, specbits)
8034 && RIDBIT_SETP (RID_UNSIGNED, specbits))
8035 error ("signed and unsigned given together for `%s'", name);
8039 if (!explicit_int && !explicit_char && pedantic)
8041 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8043 if (flag_pedantic_errors)
8048 /* Discard the type modifiers if they are invalid. */
8051 RIDBIT_RESET (RID_UNSIGNED, specbits);
8052 RIDBIT_RESET (RID_SIGNED, specbits);
8053 RIDBIT_RESET (RID_LONG, specbits);
8054 RIDBIT_RESET (RID_SHORT, specbits);
8059 /* Decide whether an integer type is signed or not.
8060 Optionally treat bitfields as signed by default. */
8061 if (RIDBIT_SETP (RID_UNSIGNED, specbits)
8062 /* Traditionally, all bitfields are unsigned. */
8063 || (bitfield && flag_traditional)
8064 || (bitfield && ! flag_signed_bitfields
8065 && (explicit_int || explicit_char
8066 /* A typedef for plain `int' without `signed'
8067 can be controlled just like plain `int'. */
8068 || ! (typedef_decl != NULL_TREE
8069 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
8070 && TREE_CODE (type) != ENUMERAL_TYPE
8071 && RIDBIT_NOTSETP (RID_SIGNED, specbits)))
8074 type = long_long_unsigned_type_node;
8075 else if (RIDBIT_SETP (RID_LONG, specbits))
8076 type = long_unsigned_type_node;
8077 else if (RIDBIT_SETP (RID_SHORT, specbits))
8078 type = short_unsigned_type_node;
8079 else if (type == char_type_node)
8080 type = unsigned_char_type_node;
8081 else if (typedef_decl)
8082 type = unsigned_type (type);
8084 type = unsigned_type_node;
8086 else if (RIDBIT_SETP (RID_SIGNED, specbits)
8087 && type == char_type_node)
8088 type = signed_char_type_node;
8090 type = long_long_integer_type_node;
8091 else if (RIDBIT_SETP (RID_LONG, specbits))
8092 type = long_integer_type_node;
8093 else if (RIDBIT_SETP (RID_SHORT, specbits))
8094 type = short_integer_type_node;
8096 /* Set CONSTP if this declaration is `const', whether by
8097 explicit specification or via a typedef.
8098 Likewise for VOLATILEP. */
8100 constp = !! RIDBIT_SETP (RID_CONST, specbits) + TYPE_READONLY (type);
8101 volatilep = !! RIDBIT_SETP (RID_VOLATILE, specbits) + TYPE_VOLATILE (type);
8103 inlinep = !! RIDBIT_SETP (RID_INLINE, specbits);
8104 virtualp = RIDBIT_SETP (RID_VIRTUAL, specbits);
8105 RIDBIT_RESET (RID_VIRTUAL, specbits);
8106 explicitp = RIDBIT_SETP (RID_EXPLICIT, specbits) != 0;
8107 RIDBIT_RESET (RID_EXPLICIT, specbits);
8109 if (RIDBIT_SETP (RID_STATIC, specbits))
8110 staticp = 1 + (decl_context == FIELD);
8112 if (virtualp && staticp == 2)
8114 cp_error ("member `%D' cannot be declared both virtual and static",
8118 friendp = RIDBIT_SETP (RID_FRIEND, specbits);
8119 RIDBIT_RESET (RID_FRIEND, specbits);
8121 if (RIDBIT_SETP (RID_MUTABLE, specbits))
8123 if (decl_context == PARM)
8125 error ("non-member `%s' cannot be declared `mutable'", name);
8126 RIDBIT_RESET (RID_MUTABLE, specbits);
8128 else if (friendp || decl_context == TYPENAME)
8130 error ("non-object member `%s' cannot be declared `mutable'", name);
8131 RIDBIT_RESET (RID_MUTABLE, specbits);
8135 /* Warn if two storage classes are given. Default to `auto'. */
8137 if (RIDBIT_ANY_SET (specbits))
8139 if (RIDBIT_SETP (RID_STATIC, specbits)) nclasses++;
8140 if (RIDBIT_SETP (RID_EXTERN, specbits)) nclasses++;
8141 if (decl_context == PARM && nclasses > 0)
8142 error ("storage class specifiers invalid in parameter declarations");
8143 if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8145 if (decl_context == PARM)
8146 error ("typedef declaration invalid in parameter declaration");
8149 if (RIDBIT_SETP (RID_AUTO, specbits)) nclasses++;
8150 if (RIDBIT_SETP (RID_REGISTER, specbits)) nclasses++;
8153 /* Give error if `virtual' is used outside of class declaration. */
8155 && (current_class_name == NULL_TREE || decl_context != FIELD))
8157 error ("virtual outside class declaration");
8160 if (current_class_name == NULL_TREE && RIDBIT_SETP (RID_MUTABLE, specbits))
8162 error ("only members can be declared mutable");
8163 RIDBIT_RESET (RID_MUTABLE, specbits);
8166 /* Static anonymous unions are dealt with here. */
8167 if (staticp && decl_context == TYPENAME
8168 && TREE_CODE (declspecs) == TREE_LIST
8169 && TREE_CODE (TREE_VALUE (declspecs)) == UNION_TYPE
8170 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (TREE_VALUE (declspecs))))
8171 decl_context = FIELD;
8173 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
8174 is used in a signature member function declaration. */
8175 if (decl_context == FIELD
8176 && IS_SIGNATURE (current_class_type)
8177 && RIDBIT_NOTSETP (RID_TYPEDEF, specbits))
8181 error ("`const' specified for signature member function `%s'", name);
8186 error ("`volatile' specified for signature member function `%s'",
8192 error ("`inline' specified for signature member function `%s'", name);
8193 /* Later, we'll make signature member functions inline. */
8198 error ("`friend' declaration in signature definition");
8203 error ("`virtual' specified for signature member function `%s'",
8205 /* Later, we'll make signature member functions virtual. */
8210 /* Warn about storage classes that are invalid for certain
8211 kinds of declarations (parameters, typenames, etc.). */
8214 error ("multiple storage classes in declaration of `%s'", name);
8215 else if (decl_context != NORMAL && nclasses > 0)
8217 if ((decl_context == PARM || decl_context == CATCHPARM)
8218 && (RIDBIT_SETP (RID_REGISTER, specbits)
8219 || RIDBIT_SETP (RID_AUTO, specbits)))
8221 else if (RIDBIT_SETP (RID_TYPEDEF, specbits))
8223 else if (decl_context == FIELD
8224 && ! IS_SIGNATURE (current_class_type)
8225 /* C++ allows static class elements */
8226 && RIDBIT_SETP (RID_STATIC, specbits))
8227 /* C++ also allows inlines and signed and unsigned elements,
8228 but in those cases we don't come in here. */
8232 if (decl_context == FIELD)
8234 tree tmp = NULL_TREE;
8235 register int op = 0;
8239 /* Avoid trying to get an operand off an identifier node. */
8240 if (TREE_CODE (declarator) == IDENTIFIER_NODE)
8243 tmp = TREE_OPERAND (declarator, 0);
8244 op = IDENTIFIER_OPNAME_P (tmp);
8246 error ("storage class specified for %s `%s'",
8247 IS_SIGNATURE (current_class_type)
8249 ? "signature member operator"
8250 : "signature member function")
8251 : (op ? "member operator" : "field"),
8252 op ? operator_name_string (tmp) : name);
8255 error (((decl_context == PARM || decl_context == CATCHPARM)
8256 ? "storage class specified for parameter `%s'"
8257 : "storage class specified for typename"), name);
8258 RIDBIT_RESET (RID_REGISTER, specbits);
8259 RIDBIT_RESET (RID_AUTO, specbits);
8260 RIDBIT_RESET (RID_EXTERN, specbits);
8262 if (decl_context == FIELD && IS_SIGNATURE (current_class_type))
8264 RIDBIT_RESET (RID_STATIC, specbits);
8269 else if (RIDBIT_SETP (RID_EXTERN, specbits) && initialized && !funcdef_flag)
8271 if (toplevel_bindings_p ())
8273 /* It's common practice (and completely valid) to have a const
8274 be initialized and declared extern. */
8276 warning ("`%s' initialized and declared `extern'", name);
8279 error ("`%s' has both `extern' and initializer", name);
8281 else if (RIDBIT_SETP (RID_EXTERN, specbits) && funcdef_flag
8282 && ! toplevel_bindings_p ())
8283 error ("nested function `%s' declared `extern'", name);
8284 else if (toplevel_bindings_p ())
8286 if (RIDBIT_SETP (RID_AUTO, specbits))
8287 error ("top-level declaration of `%s' specifies `auto'", name);
8290 if (nclasses > 0 && friendp)
8291 error ("storage class specifiers invalid in friend function declarations");
8293 /* Now figure out the structure of the declarator proper.
8294 Descend through it, creating more complex types, until we reach
8295 the declared identifier (or NULL_TREE, in an absolute declarator). */
8297 while (declarator && TREE_CODE (declarator) != IDENTIFIER_NODE)
8299 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
8300 an INDIRECT_REF (for *...),
8301 a CALL_EXPR (for ...(...)),
8302 an identifier (for the name being declared)
8303 or a null pointer (for the place in an absolute declarator
8304 where the name was omitted).
8305 For the last two cases, we have just exited the loop.
8307 For C++ it could also be
8308 a SCOPE_REF (for class :: ...). In this case, we have converted
8309 sensible names to types, and those are the values we use to
8310 qualify the member name.
8311 an ADDR_EXPR (for &...),
8312 a BIT_NOT_EXPR (for destructors)
8314 At this point, TYPE is the type of elements of an array,
8315 or for a function to return, or for a pointer to point to.
8316 After this sequence of ifs, TYPE is the type of the
8317 array or function or pointer, and DECLARATOR has had its
8318 outermost layer removed. */
8320 if (TREE_CODE (type) == ERROR_MARK)
8322 if (TREE_CODE (declarator) == SCOPE_REF)
8323 declarator = TREE_OPERAND (declarator, 1);
8325 declarator = TREE_OPERAND (declarator, 0);
8328 if (quals != NULL_TREE
8329 && (declarator == NULL_TREE
8330 || TREE_CODE (declarator) != SCOPE_REF))
8332 if (ctype == NULL_TREE && TREE_CODE (type) == METHOD_TYPE)
8333 ctype = TYPE_METHOD_BASETYPE (type);
8334 if (ctype != NULL_TREE)
8336 tree dummy = build_decl (TYPE_DECL, NULL_TREE, type);
8337 ctype = grok_method_quals (ctype, dummy, quals);
8338 type = TREE_TYPE (dummy);
8342 switch (TREE_CODE (declarator))
8346 register tree itype = NULL_TREE;
8347 register tree size = TREE_OPERAND (declarator, 1);
8348 /* The index is a signed object `sizetype' bits wide. */
8349 tree index_type = signed_type (sizetype);
8351 declarator = TREE_OPERAND (declarator, 0);
8353 /* Check for some types that there cannot be arrays of. */
8355 if (TYPE_MAIN_VARIANT (type) == void_type_node)
8357 cp_error ("declaration of `%D' as array of voids", dname);
8358 type = error_mark_node;
8361 if (TREE_CODE (type) == FUNCTION_TYPE)
8363 cp_error ("declaration of `%D' as array of functions", dname);
8364 type = error_mark_node;
8367 /* ARM $8.4.3: Since you can't have a pointer to a reference,
8368 you can't have arrays of references. If we allowed them,
8369 then we'd be saying x[i] is valid for an array x, but
8370 then you'd have to ask: what does `*(x + i)' mean? */
8371 if (TREE_CODE (type) == REFERENCE_TYPE)
8373 if (decl_context == TYPENAME)
8374 cp_error ("cannot make arrays of references");
8376 cp_error ("declaration of `%D' as array of references",
8378 type = error_mark_node;
8381 if (TREE_CODE (type) == OFFSET_TYPE)
8383 cp_error ("declaration of `%D' as array of data members",
8385 type = error_mark_node;
8388 if (TREE_CODE (type) == METHOD_TYPE)
8390 cp_error ("declaration of `%D' as array of function members",
8392 type = error_mark_node;
8395 if (size == error_mark_node)
8396 type = error_mark_node;
8398 if (type == error_mark_node)
8403 /* Must suspend_momentary here because the index
8404 type may need to live until the end of the function.
8405 For example, it is used in the declaration of a
8406 variable which requires destructing at the end of
8407 the function; then build_vec_delete will need this
8409 int yes = suspend_momentary ();
8410 /* might be a cast */
8411 if (TREE_CODE (size) == NOP_EXPR
8412 && TREE_TYPE (size) == TREE_TYPE (TREE_OPERAND (size, 0)))
8413 size = TREE_OPERAND (size, 0);
8415 /* If this involves a template parameter, it'll be
8416 constant, but we don't know what the value is yet. */
8417 if (processing_template_decl)
8419 itype = make_node (INTEGER_TYPE);
8420 TYPE_MIN_VALUE (itype) = size_zero_node;
8421 TYPE_MAX_VALUE (itype) = build_min
8422 (MINUS_EXPR, sizetype, size, integer_one_node);
8423 goto dont_grok_size;
8426 if (TREE_CODE (TREE_TYPE (size)) != INTEGER_TYPE
8427 && TREE_CODE (TREE_TYPE (size)) != ENUMERAL_TYPE)
8429 cp_error ("size of array `%D' has non-integer type",
8431 size = integer_one_node;
8433 if (TREE_READONLY_DECL_P (size))
8434 size = decl_constant_value (size);
8435 if (pedantic && integer_zerop (size))
8436 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname);
8437 if (TREE_CONSTANT (size))
8439 int old_flag_pedantic_errors = flag_pedantic_errors;
8440 int old_pedantic = pedantic;
8441 pedantic = flag_pedantic_errors = 1;
8442 /* Always give overflow errors on array subscripts. */
8443 constant_expression_warning (size);
8444 pedantic = old_pedantic;
8445 flag_pedantic_errors = old_flag_pedantic_errors;
8446 if (INT_CST_LT (size, integer_zero_node))
8448 cp_error ("size of array `%D' is negative", dname);
8449 size = integer_one_node;
8457 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
8460 cp_pedwarn ("ANSI C++ forbids variable-size array");
8465 fold (build_binary_op (MINUS_EXPR,
8466 convert (index_type, size),
8467 convert (index_type,
8468 integer_one_node), 1));
8469 if (! TREE_CONSTANT (itype))
8470 itype = variable_size (itype);
8471 else if (TREE_OVERFLOW (itype))
8473 error ("overflow in array dimension");
8474 TREE_OVERFLOW (itype) = 0;
8477 /* If we're a parm, we need to have a permanent type so
8478 mangling checks for re-use will work right. If both the
8479 element and index types are permanent, the array type
8481 if (decl_context == PARM
8482 && allocation_temporary_p () && TREE_PERMANENT (type))
8484 push_obstacks (&permanent_obstack, &permanent_obstack);
8485 itype = build_index_type (itype);
8489 itype = build_index_type (itype);
8492 resume_momentary (yes);
8495 /* Build the array type itself, then merge any constancy or
8496 volatility into the target type. We must do it in this order
8497 to ensure that the TYPE_MAIN_VARIANT field of the array type
8498 is set correctly. */
8500 type = build_cplus_array_type (type, itype);
8501 if (constp || volatilep)
8502 type = cp_build_type_variant (type, constp, volatilep);
8512 tree inner_parms = TREE_OPERAND (declarator, 1);
8513 tree inner_decl = TREE_OPERAND (declarator, 0);
8515 /* Declaring a function type.
8516 Make sure we have a valid type for the function to return. */
8518 /* Is this an error? Should they be merged into TYPE here? */
8519 if (pedantic && (constp || volatilep))
8520 pedwarn ("function declared to return const or volatile result");
8522 /* Merge any constancy or volatility into the function return
8525 if (constp || volatilep)
8527 type = cp_build_type_variant (type, constp, volatilep);
8528 if (IS_AGGR_TYPE (type))
8529 build_pointer_type (type);
8535 /* Warn about some types functions can't return. */
8537 if (TREE_CODE (type) == FUNCTION_TYPE)
8539 error ("`%s' declared as function returning a function", name);
8540 type = integer_type_node;
8542 if (TREE_CODE (type) == ARRAY_TYPE)
8544 error ("`%s' declared as function returning an array", name);
8545 type = integer_type_node;
8548 if (inner_decl && TREE_CODE (inner_decl) == SCOPE_REF)
8549 inner_decl = TREE_OPERAND (inner_decl, 1);
8551 /* Pick up type qualifiers which should be applied to `this'. */
8552 quals = TREE_OPERAND (declarator, 2);
8554 /* Pick up the exception specifications. */
8555 raises = TREE_TYPE (declarator);
8557 /* Say it's a definition only for the CALL_EXPR
8558 closest to the identifier. */
8560 inner_decl && (TREE_CODE (inner_decl) == IDENTIFIER_NODE
8561 || TREE_CODE (inner_decl) == BIT_NOT_EXPR);
8563 if (ctype == NULL_TREE
8564 && decl_context == FIELD
8566 && (friendp == 0 || dname == current_class_name))
8567 ctype = current_class_type;
8569 if (ctype && return_type == return_conversion)
8570 TYPE_HAS_CONVERSION (ctype) = 1;
8571 if (ctype && constructor_name (ctype) == dname)
8573 /* We are within a class's scope. If our declarator name
8574 is the same as the class name, and we are defining
8575 a function, then it is a constructor/destructor, and
8576 therefore returns a void type. */
8578 if (flags == DTOR_FLAG)
8580 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
8581 not be declared const or volatile. A destructor
8582 may not be static. */
8584 error ("destructor cannot be static member function");
8587 error ("destructors cannot be declared `const' or `volatile'");
8588 return void_type_node;
8590 if (decl_context == FIELD)
8592 if (! member_function_or_else (ctype, current_class_type,
8593 "destructor for alien class `%s' cannot be a member"))
8594 return void_type_node;
8597 else /* it's a constructor. */
8601 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
8602 not be declared const or volatile. A constructor may
8603 not be virtual. A constructor may not be static. */
8605 error ("constructor cannot be static member function");
8608 pedwarn ("constructors cannot be declared virtual");
8613 error ("constructors cannot be declared `const' or `volatile'");
8614 return void_type_node;
8617 RID_BIT_TYPE tmp_bits;
8618 bcopy ((void*)&specbits, (void*)&tmp_bits, sizeof (RID_BIT_TYPE));
8619 RIDBIT_RESET (RID_INLINE, tmp_bits);
8620 RIDBIT_RESET (RID_STATIC, tmp_bits);
8621 if (RIDBIT_ANY_SET (tmp_bits))
8622 error ("return value type specifier for constructor ignored");
8624 type = build_pointer_type (ctype);
8625 if (decl_context == FIELD &&
8626 IS_SIGNATURE (current_class_type))
8628 error ("constructor not allowed in signature");
8629 return void_type_node;
8631 else if (decl_context == FIELD)
8633 if (! member_function_or_else (ctype, current_class_type,
8634 "constructor for alien class `%s' cannot be member"))
8635 return void_type_node;
8636 TYPE_HAS_CONSTRUCTOR (ctype) = 1;
8637 if (return_type != return_ctor)
8641 if (decl_context == FIELD)
8647 error ("can't initialize friend function `%s'", name);
8650 /* Cannot be both friend and virtual. */
8651 error ("virtual functions cannot be friends");
8652 RIDBIT_RESET (RID_FRIEND, specbits);
8655 if (decl_context == NORMAL)
8656 error ("friend declaration not in class definition");
8657 if (current_function_decl && funcdef_flag)
8658 cp_error ("can't define friend function `%s' in a local class definition",
8662 /* Traditionally, declaring return type float means double. */
8664 if (flag_traditional
8665 && TYPE_MAIN_VARIANT (type) == float_type_node)
8667 type = build_type_variant (double_type_node,
8668 TYPE_READONLY (type),
8669 TYPE_VOLATILE (type));
8672 /* Construct the function type and go to the next
8673 inner layer of declarator. */
8675 declarator = TREE_OPERAND (declarator, 0);
8677 /* FIXME: This is where default args should be fully
8680 arg_types = grokparms (inner_parms, funcdecl_p ? funcdef_flag : 0);
8684 /* Get past destructors, etc.
8685 We know we have one because FLAGS will be non-zero.
8687 Complain about improper parameter lists here. */
8688 if (TREE_CODE (declarator) == BIT_NOT_EXPR)
8690 declarator = TREE_OPERAND (declarator, 0);
8692 if (strict_prototype == 0 && arg_types == NULL_TREE)
8693 arg_types = void_list_node;
8694 else if (arg_types == NULL_TREE
8695 || arg_types != void_list_node)
8697 error ("destructors cannot be specified with parameters");
8698 arg_types = void_list_node;
8703 /* ANSI seems to say that `const int foo ();'
8704 does not make the function foo const. */
8705 type = build_function_type (type,
8706 flag_traditional ? 0 : arg_types);
8712 /* Filter out pointers-to-references and references-to-references.
8713 We can get these if a TYPE_DECL is used. */
8715 if (TREE_CODE (type) == REFERENCE_TYPE)
8717 error ("cannot declare %s to references",
8718 TREE_CODE (declarator) == ADDR_EXPR
8719 ? "references" : "pointers");
8720 declarator = TREE_OPERAND (declarator, 0);
8724 if (TREE_CODE (type) == OFFSET_TYPE
8725 && (TREE_CODE (TREE_TYPE (type)) == VOID_TYPE
8726 || TREE_CODE (TREE_TYPE (type)) == REFERENCE_TYPE))
8728 cp_error ("cannot declare pointer to `%#T' member",
8730 type = TREE_TYPE (type);
8733 /* Merge any constancy or volatility into the target type
8736 if (constp || volatilep)
8738 /* A const or volatile signature pointer/reference is
8739 pointing to a const or volatile object, i.e., the
8740 `optr' is const or volatile, respectively, not the
8741 signature pointer/reference itself. */
8742 if (! IS_SIGNATURE (type))
8744 type = cp_build_type_variant (type, constp, volatilep);
8745 if (IS_AGGR_TYPE (type))
8746 build_pointer_type (type);
8752 if (IS_SIGNATURE (type))
8754 if (TREE_CODE (declarator) == ADDR_EXPR)
8756 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
8757 && TYPE_SIZE (type))
8758 cp_warning ("empty signature `%T' used in signature reference declaration",
8761 type = build_signature_reference_type (type,
8764 sorry ("signature reference");
8770 if (CLASSTYPE_METHOD_VEC (type) == NULL_TREE
8771 && TYPE_SIZE (type))
8772 cp_warning ("empty signature `%T' used in signature pointer declaration",
8774 type = build_signature_pointer_type (type,
8780 else if (TREE_CODE (declarator) == ADDR_EXPR)
8782 if (TREE_CODE (type) == FUNCTION_TYPE)
8784 error ("cannot declare references to functions; use pointer to function instead");
8785 type = build_pointer_type (type);
8789 if (TYPE_MAIN_VARIANT (type) == void_type_node)
8790 error ("invalid type: `void &'");
8792 type = build_reference_type (type);
8795 else if (TREE_CODE (type) == METHOD_TYPE)
8797 type = build_ptrmemfunc_type (build_pointer_type (type));
8800 type = build_pointer_type (type);
8802 /* Process a list of type modifier keywords (such as
8803 const or volatile) that were given inside the `*' or `&'. */
8805 if (TREE_TYPE (declarator))
8807 register tree typemodlist;
8809 for (typemodlist = TREE_TYPE (declarator); typemodlist;
8810 typemodlist = TREE_CHAIN (typemodlist))
8812 if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_CONST])
8814 else if (TREE_VALUE (typemodlist) == ridpointers[(int) RID_VOLATILE])
8819 error ("invalid type modifier within %s declarator",
8820 TREE_CODE (declarator) == ADDR_EXPR
8821 ? "reference" : "pointer");
8825 pedwarn ("duplicate `const'");
8827 pedwarn ("duplicate `volatile'");
8828 if (TREE_CODE (declarator) == ADDR_EXPR
8829 && (constp || volatilep))
8832 pedwarn ("discarding `const' applied to a reference");
8834 pedwarn ("discarding `volatile' applied to a reference");
8835 constp = volatilep = 0;
8838 declarator = TREE_OPERAND (declarator, 0);
8844 /* We have converted type names to NULL_TREE if the
8845 name was bogus, or to a _TYPE node, if not.
8847 The variable CTYPE holds the type we will ultimately
8848 resolve to. The code here just needs to build
8849 up appropriate member types. */
8850 tree sname = TREE_OPERAND (declarator, 1);
8851 /* Destructors can have their visibilities changed as well. */
8852 if (TREE_CODE (sname) == BIT_NOT_EXPR)
8853 sname = TREE_OPERAND (sname, 0);
8855 if (TREE_COMPLEXITY (declarator) == 0)
8856 /* This needs to be here, in case we are called
8857 multiple times. */ ;
8858 else if (friendp && (TREE_COMPLEXITY (declarator) < 2))
8859 /* don't fall out into global scope. Hides real bug? --eichin */ ;
8860 else if (! IS_AGGR_TYPE_CODE
8861 (TREE_CODE (TREE_OPERAND (declarator, 0))))
8863 else if (TREE_COMPLEXITY (declarator) == current_class_depth)
8865 /* This pop_nested_class corresponds to the
8866 push_nested_class used to push into class scope for
8867 parsing the argument list of a function decl, in
8869 pop_nested_class (1);
8870 TREE_COMPLEXITY (declarator) = current_class_depth;
8873 my_friendly_abort (16);
8875 if (TREE_OPERAND (declarator, 0) == NULL_TREE)
8877 /* We had a reference to a global decl, or
8878 perhaps we were given a non-aggregate typedef,
8879 in which case we cleared this out, and should just
8880 keep going as though it wasn't there. */
8884 ctype = TREE_OPERAND (declarator, 0);
8886 if (TREE_CODE (ctype) == TYPENAME_TYPE
8887 && TYPE_CONTEXT (ctype) == current_class_type)
8889 /* Members of the current class get resolved immediately;
8890 we couldn't catch this one earlier because we hadn't
8891 pushed into the class yet. */
8892 if (TREE_TYPE (ctype))
8893 ctype = TREE_TYPE (ctype);
8895 ctype = make_typename_type (TYPE_CONTEXT (ctype),
8896 TYPE_IDENTIFIER (ctype));
8899 if (sname == NULL_TREE)
8902 if (TREE_CODE (sname) == IDENTIFIER_NODE)
8904 /* This is the `standard' use of the scoping operator:
8905 basetype :: member . */
8907 if (ctype == current_class_type)
8913 Is this ill-formed? */
8916 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
8919 else if (TREE_CODE (type) == FUNCTION_TYPE)
8921 if (current_class_type == NULL_TREE
8923 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
8924 TREE_TYPE (type), TYPE_ARG_TYPES (type));
8927 cp_error ("cannot declare member function `%T::%s' within `%T'",
8928 ctype, name, current_class_type);
8929 return void_type_node;
8932 else if (RIDBIT_SETP (RID_TYPEDEF, specbits)
8933 || TYPE_SIZE (complete_type (ctype)) != NULL_TREE)
8935 /* have to move this code elsewhere in this function.
8936 this code is used for i.e., typedef int A::M; M *pm;
8938 It is? How? jason 10/2/94 */
8940 if (current_class_type)
8942 cp_error ("cannot declare member `%T::%s' within `%T'",
8943 ctype, name, current_class_type);
8944 return void_type_node;
8946 type = build_offset_type (ctype, type);
8948 else if (uses_template_parms (ctype))
8950 if (TREE_CODE (type) == FUNCTION_TYPE)
8952 build_cplus_method_type (build_type_variant (ctype,
8956 TYPE_ARG_TYPES (type));
8960 cp_error ("structure `%T' not yet defined", ctype);
8961 return error_mark_node;
8966 else if (TREE_CODE (sname) == SCOPE_REF)
8967 my_friendly_abort (17);
8971 declarator = TREE_OPERAND (declarator, 1);
8972 if (declarator && TREE_CODE (declarator) == CALL_EXPR)
8973 /* In this case, we will deal with it later. */
8977 if (TREE_CODE (type) == FUNCTION_TYPE)
8978 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep), TREE_TYPE (type), TYPE_ARG_TYPES (type));
8980 type = build_offset_type (ctype, type);
8987 declarator = TREE_OPERAND (declarator, 0);
8993 declarator = NULL_TREE;
8997 declarator = NULL_TREE;
9001 my_friendly_abort (158);
9007 error ("only constructors can be declared `explicit'");
9011 /* Now TYPE has the actual type. */
9013 /* If this is declaring a typedef name, return a TYPE_DECL. */
9015 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9019 error ("const `%s' cannot be declared `mutable'", name);
9020 RIDBIT_RESET (RID_MUTABLE, specbits);
9024 error ("static `%s' cannot be declared `mutable'", name);
9025 RIDBIT_RESET (RID_MUTABLE, specbits);
9029 if (RIDBIT_SETP (RID_TYPEDEF, specbits) && decl_context != TYPENAME)
9033 /* Note that the grammar rejects storage classes
9034 in typenames, fields or parameters. */
9035 if (constp || volatilep)
9036 type = cp_build_type_variant (type, constp, volatilep);
9038 /* If the user declares "struct {...} foo" then `foo' will have
9039 an anonymous name. Fill that name in now. Nothing can
9040 refer to it, so nothing needs know about the name change.
9041 The TYPE_NAME field was filled in by build_struct_xref. */
9042 if (type != error_mark_node
9044 && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
9045 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type)))
9047 /* replace the anonymous name with the real name everywhere. */
9048 lookup_tag_reverse (type, declarator);
9049 TYPE_IDENTIFIER (type) = declarator;
9051 if (TYPE_LANG_SPECIFIC (type))
9052 TYPE_WAS_ANONYMOUS (type) = 1;
9055 tree d = TYPE_NAME (type), c = DECL_CONTEXT (d);
9057 DECL_ASSEMBLER_NAME (d) = DECL_NAME (d);
9058 DECL_ASSEMBLER_NAME (d)
9059 = get_identifier (build_overload_name (type, 1, 1));
9063 if (decl_context == FIELD)
9065 if (declarator == current_class_name)
9066 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
9068 decl = build_lang_decl (TYPE_DECL, declarator, type);
9069 if (IS_SIGNATURE (current_class_type) && opaque_typedef)
9070 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type) = 1;
9073 decl = build_decl (TYPE_DECL, declarator, type);
9075 if (TREE_CODE (type) == OFFSET_TYPE || TREE_CODE (type) == METHOD_TYPE)
9077 cp_error_at ("typedef name may not be class-qualified", decl);
9082 if (ctype == NULL_TREE)
9084 if (TREE_CODE (type) != METHOD_TYPE)
9085 cp_error_at ("invalid type qualifier for non-method type", decl);
9087 ctype = TYPE_METHOD_BASETYPE (type);
9089 if (ctype != NULL_TREE)
9090 grok_method_quals (ctype, decl, quals);
9093 if (RIDBIT_SETP (RID_SIGNED, specbits)
9094 || (typedef_decl && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl)))
9095 C_TYPEDEF_EXPLICITLY_SIGNED (decl) = 1;
9097 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9099 error ("non-object member `%s' cannot be declared mutable", name);
9102 bad_specifiers (decl, "type", virtualp, quals != NULL_TREE,
9103 inlinep, friendp, raises != NULL_TREE);
9106 error ("typedef declaration includes an initializer");
9111 /* Detect the case of an array type of unspecified size
9112 which came, as such, direct from a typedef name.
9113 We must copy the type, so that each identifier gets
9114 a distinct type, so that each identifier's size can be
9115 controlled separately by its own initializer. */
9117 if (type == typedef_type && TREE_CODE (type) == ARRAY_TYPE
9118 && TYPE_DOMAIN (type) == NULL_TREE)
9120 type = build_cplus_array_type (TREE_TYPE (type), TYPE_DOMAIN (type));
9123 /* If this is a type name (such as, in a cast or sizeof),
9124 compute the type and return it now. */
9126 if (decl_context == TYPENAME)
9128 /* Note that the grammar rejects storage classes
9129 in typenames, fields or parameters. */
9130 if (constp || volatilep)
9131 if (IS_SIGNATURE (type))
9132 error ("`const' or `volatile' specified with signature type");
9134 type = cp_build_type_variant (type, constp, volatilep);
9136 /* Special case: "friend class foo" looks like a TYPENAME context. */
9141 cp_error ("`volatile' specified for friend class declaration");
9146 cp_error ("`inline' specified for friend class declaration");
9150 /* Only try to do this stuff if we didn't already give up. */
9151 if (type != integer_type_node)
9153 /* A friendly class? */
9154 if (current_class_type)
9155 make_friend_class (current_class_type, TYPE_MAIN_VARIANT (type));
9157 error ("trying to make class `%s' a friend of global scope",
9158 TYPE_NAME_STRING (type));
9159 type = void_type_node;
9164 tree dummy = build_decl (TYPE_DECL, declarator, type);
9165 if (ctype == NULL_TREE)
9167 my_friendly_assert (TREE_CODE (type) == METHOD_TYPE, 159);
9168 ctype = TYPE_METHOD_BASETYPE (type);
9170 grok_method_quals (ctype, dummy, quals);
9171 type = TREE_TYPE (dummy);
9176 else if (declarator == NULL_TREE && decl_context != PARM
9177 && decl_context != CATCHPARM
9178 && TREE_CODE (type) != UNION_TYPE
9181 cp_error ("abstract declarator `%T' used as declaration", type);
9182 declarator = make_anon_name ();
9185 /* `void' at top level (not within pointer)
9186 is allowed only in typedefs or type names.
9187 We don't complain about parms either, but that is because
9188 a better error message can be made later. */
9190 if (TYPE_MAIN_VARIANT (type) == void_type_node && decl_context != PARM)
9193 error ("unnamed variable or field declared void");
9194 else if (TREE_CODE (declarator) == IDENTIFIER_NODE)
9196 if (IDENTIFIER_OPNAME_P (declarator))
9197 my_friendly_abort (356);
9199 error ("variable or field `%s' declared void", name);
9202 error ("variable or field declared void");
9203 type = integer_type_node;
9206 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
9207 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
9212 if (decl_context == PARM)
9215 error ("cannot use `::' in parameter declaration");
9217 /* A parameter declared as an array of T is really a pointer to T.
9218 One declared as a function is really a pointer to a function.
9219 One declared as a member is really a pointer to member. */
9221 if (TREE_CODE (type) == ARRAY_TYPE)
9223 /* Transfer const-ness of array into that of type pointed to. */
9224 type = build_pointer_type
9225 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
9226 volatilep = constp = 0;
9228 else if (TREE_CODE (type) == FUNCTION_TYPE)
9229 type = build_pointer_type (type);
9230 else if (TREE_CODE (type) == OFFSET_TYPE)
9231 type = build_pointer_type (type);
9232 else if (type == void_type_node && declarator)
9234 error ("declaration of `%s' as void", name);
9238 decl = build_decl (PARM_DECL, declarator, complete_type (type));
9240 bad_specifiers (decl, "parameter", virtualp, quals != NULL_TREE,
9241 inlinep, friendp, raises != NULL_TREE);
9242 if (current_class_type
9243 && IS_SIGNATURE (current_class_type))
9246 error ("parameter of signature member function declared `inline'");
9247 if (RIDBIT_SETP (RID_AUTO, specbits))
9248 error ("parameter of signature member function declared `auto'");
9249 if (RIDBIT_SETP (RID_REGISTER, specbits))
9250 error ("parameter of signature member function declared `register'");
9253 /* Compute the type actually passed in the parmlist,
9254 for the case where there is no prototype.
9255 (For example, shorts and chars are passed as ints.)
9256 When there is a prototype, this is overridden later. */
9258 DECL_ARG_TYPE (decl) = type_promotes_to (type);
9260 else if (decl_context == FIELD)
9262 if (type == error_mark_node)
9264 /* Happens when declaring arrays of sizes which
9265 are error_mark_node, for example. */
9268 else if (TREE_CODE (type) == FUNCTION_TYPE)
9272 /* We catch the others as conflicts with the builtin
9274 if (friendp && declarator == ridpointers[(int) RID_SIGNED])
9276 cp_error ("function `%D' cannot be declared friend",
9283 if (ctype == NULL_TREE)
9284 ctype = current_class_type;
9286 if (ctype == NULL_TREE)
9288 cp_error ("can't make `%D' into a method -- not in a class",
9290 return void_type_node;
9293 /* ``A union may [ ... ] not [ have ] virtual functions.''
9295 if (virtualp && TREE_CODE (ctype) == UNION_TYPE)
9297 cp_error ("function `%D' declared virtual inside a union",
9299 return void_type_node;
9302 if (declarator == ansi_opname[(int) NEW_EXPR]
9303 || declarator == ansi_opname[(int) VEC_NEW_EXPR]
9304 || declarator == ansi_opname[(int) DELETE_EXPR]
9305 || declarator == ansi_opname[(int) VEC_DELETE_EXPR])
9309 cp_error ("`%D' cannot be declared virtual, since it is always static",
9314 else if (staticp < 2)
9315 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9316 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9319 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
9320 publicp = (! friendp
9321 || RIDBIT_SETP (RID_EXTERN, specbits)
9322 || ! (funcdef_flag < 0 || inlinep));
9323 decl = grokfndecl (ctype, type, declarator,
9324 virtualp, flags, quals, raises, attrlist,
9325 friendp ? -1 : 0, publicp, inlinep,
9327 if (decl == NULL_TREE)
9330 /* This clobbers the attrs stored in `decl' from `attrlist'. */
9331 /* The decl and setting of decl_machine_attr is also turned off. */
9332 decl = build_decl_attribute_variant (decl, decl_machine_attr);
9336 DECL_NONCONVERTING_P (decl) = 1;
9338 else if (TREE_CODE (type) == METHOD_TYPE)
9340 /* We only get here for friend declarations of
9341 members of other classes. */
9342 /* All method decls are public, so tell grokfndecl to set
9343 TREE_PUBLIC, also. */
9344 decl = grokfndecl (ctype, type, declarator,
9345 virtualp, flags, quals, raises, attrlist,
9346 friendp ? -1 : 0, 1, 0, funcdef_flag);
9347 if (decl == NULL_TREE)
9350 else if (!staticp && ! processing_template_decl
9351 && TYPE_SIZE (complete_type (type)) == NULL_TREE
9352 && (TREE_CODE (type) != ARRAY_TYPE || initialized == 0))
9355 cp_error ("field `%D' has incomplete type", declarator);
9357 cp_error ("name `%T' has incomplete type", type);
9359 /* If we're instantiating a template, tell them which
9360 instantiation made the field's type be incomplete. */
9361 if (current_class_type
9362 && TYPE_NAME (current_class_type)
9363 && IDENTIFIER_TEMPLATE (DECL_NAME (TYPE_NAME (current_class_type)))
9364 && declspecs && TREE_VALUE (declspecs)
9365 && TREE_TYPE (TREE_VALUE (declspecs)) == type)
9366 cp_error (" in instantiation of template `%T'",
9367 current_class_type);
9369 type = error_mark_node;
9376 error ("`%s' is neither function nor method; cannot be declared friend",
9377 IDENTIFIER_POINTER (declarator));
9385 /* Friends are treated specially. */
9386 if (ctype == current_class_type)
9387 warning ("member functions are implicitly friends of their class");
9391 if (decl && DECL_NAME (decl))
9392 t = do_friend (ctype, declarator, decl,
9393 last_function_parms, flags, quals,
9395 if (t && funcdef_flag)
9398 return void_type_node;
9402 /* Structure field. It may not be a function, except for C++ */
9404 if (decl == NULL_TREE)
9408 /* Motion 10 at San Diego: If a static const integral data
9409 member is initialized with an integral constant
9410 expression, the initializer may appear either in the
9411 declaration (within the class), or in the definition,
9412 but not both. If it appears in the class, the member is
9413 a member constant. The file-scope definition is always
9420 cp_pedwarn ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
9423 else if (! INTEGRAL_TYPE_P (type))
9424 cp_pedwarn ("ANSI C++ forbids member constant `%D' of non-integral type `%T'", declarator, type);
9428 /* Note that initialization of const members is prohibited
9429 by the draft ANSI standard, though it appears to be in
9430 common practice. 12.6.2: The argument list is used to
9431 initialize the named nonstatic member.... This (or an
9432 initializer list) is the only way to initialize
9433 nonstatic const and reference members. */
9434 else if (pedantic || ! constp)
9435 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
9436 constp ? "const member" : "member", declarator);
9439 if (staticp || (constp && initialized))
9441 /* ANSI C++ Apr '95 wp 9.2 */
9442 if (staticp && declarator == current_class_name)
9443 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
9446 /* C++ allows static class members.
9447 All other work for this is done by grokfield.
9448 This VAR_DECL is built by build_lang_field_decl.
9449 All other VAR_DECLs are built by build_decl. */
9450 decl = build_lang_field_decl (VAR_DECL, declarator, type);
9451 TREE_STATIC (decl) = 1;
9452 /* In class context, 'static' means public access. */
9453 TREE_PUBLIC (decl) = DECL_EXTERNAL (decl) = !!staticp;
9457 decl = build_lang_field_decl (FIELD_DECL, declarator, type);
9458 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9460 DECL_MUTABLE_P (decl) = 1;
9461 RIDBIT_RESET (RID_MUTABLE, specbits);
9465 bad_specifiers (decl, "field", virtualp, quals != NULL_TREE,
9466 inlinep, friendp, raises != NULL_TREE);
9469 else if (TREE_CODE (type) == FUNCTION_TYPE || TREE_CODE (type) == METHOD_TYPE)
9471 tree original_name = declarator;
9477 if (RIDBIT_SETP (RID_AUTO, specbits))
9478 error ("storage class `auto' invalid for function `%s'", name);
9479 else if (RIDBIT_SETP (RID_REGISTER, specbits))
9480 error ("storage class `register' invalid for function `%s'", name);
9482 /* Function declaration not at top level.
9483 Storage classes other than `extern' are not allowed
9484 and `extern' makes no difference. */
9485 if (! toplevel_bindings_p ()
9486 && (RIDBIT_SETP (RID_STATIC, specbits)
9487 || RIDBIT_SETP (RID_INLINE, specbits))
9490 if (RIDBIT_SETP (RID_STATIC, specbits))
9491 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name);
9493 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name);
9496 if (ctype == NULL_TREE)
9500 error ("virtual non-class function `%s'", name);
9504 if (current_lang_name == lang_name_cplusplus
9505 && ! processing_template_decl
9506 && ! (IDENTIFIER_LENGTH (original_name) == 4
9507 && IDENTIFIER_POINTER (original_name)[0] == 'm'
9508 && strcmp (IDENTIFIER_POINTER (original_name), "main") == 0)
9509 && ! (IDENTIFIER_LENGTH (original_name) > 10
9510 && IDENTIFIER_POINTER (original_name)[0] == '_'
9511 && IDENTIFIER_POINTER (original_name)[1] == '_'
9512 && strncmp (IDENTIFIER_POINTER (original_name)+2, "builtin_", 8) == 0))
9513 /* Plain overloading: will not be grok'd by grokclassfn. */
9514 declarator = build_decl_overload (dname, TYPE_ARG_TYPES (type), 0);
9516 else if (TREE_CODE (type) == FUNCTION_TYPE && staticp < 2)
9517 type = build_cplus_method_type (build_type_variant (ctype, constp, volatilep),
9518 TREE_TYPE (type), TYPE_ARG_TYPES (type));
9520 /* Record presence of `static'. In C++, `inline' implies `static'. */
9521 publicp = (ctype != NULL_TREE
9522 || RIDBIT_SETP (RID_EXTERN, specbits)
9523 || (!RIDBIT_SETP (RID_STATIC, specbits)
9524 && !RIDBIT_SETP (RID_INLINE, specbits)));
9526 decl = grokfndecl (ctype, type, original_name,
9527 virtualp, flags, quals, raises, attrlist,
9529 publicp, inlinep, funcdef_flag);
9530 if (decl == NULL_TREE)
9533 if (ctype == NULL_TREE && DECL_LANGUAGE (decl) != lang_c)
9534 DECL_ASSEMBLER_NAME (decl) = current_namespace_id (declarator);
9538 int illegal_static = 0;
9540 /* Don't allow a static member function in a class, and forbid
9541 declaring main to be static. */
9542 if (TREE_CODE (type) == METHOD_TYPE)
9544 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl);
9547 else if (current_function_decl)
9549 /* FIXME need arm citation */
9550 error ("cannot declare static function inside another function");
9557 RIDBIT_RESET (RID_STATIC, specbits);
9563 /* It's a variable. */
9565 if (decl_context == CATCHPARM)
9570 error ("cannot use `::' in parameter declaration");
9573 /* A parameter declared as an array of T is really a pointer to T.
9574 One declared as a function is really a pointer to a function.
9575 One declared as a member is really a pointer to member. */
9577 if (TREE_CODE (type) == ARRAY_TYPE)
9579 /* Transfer const-ness of array into that of type
9581 type = build_pointer_type
9582 (cp_build_type_variant (TREE_TYPE (type), constp, volatilep));
9583 volatilep = constp = 0;
9585 else if (TREE_CODE (type) == FUNCTION_TYPE)
9586 type = build_pointer_type (type);
9587 else if (TREE_CODE (type) == OFFSET_TYPE)
9588 type = build_pointer_type (type);
9591 /* An uninitialized decl with `extern' is a reference. */
9592 decl = grokvardecl (type, declarator, specbits, initialized, constp);
9593 bad_specifiers (decl, "variable", virtualp, quals != NULL_TREE,
9594 inlinep, friendp, raises != NULL_TREE);
9598 DECL_CONTEXT (decl) = ctype;
9601 cp_pedwarn ("static member `%D' re-declared as static", decl);
9603 RIDBIT_RESET (RID_STATIC, specbits);
9605 if (RIDBIT_SETP (RID_REGISTER, specbits) && TREE_STATIC (decl))
9607 cp_error ("static member `%D' declared `register'", decl);
9608 RIDBIT_RESET (RID_REGISTER, specbits);
9610 if (RIDBIT_SETP (RID_EXTERN, specbits) && pedantic)
9612 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
9614 RIDBIT_RESET (RID_EXTERN, specbits);
9619 if (RIDBIT_SETP (RID_MUTABLE, specbits))
9621 error ("`%s' cannot be declared mutable", name);
9624 /* Record `register' declaration for warnings on &
9625 and in case doing stupid register allocation. */
9627 if (RIDBIT_SETP (RID_REGISTER, specbits))
9628 DECL_REGISTER (decl) = 1;
9630 if (RIDBIT_SETP (RID_EXTERN, specbits))
9631 DECL_THIS_EXTERN (decl) = 1;
9633 if (RIDBIT_SETP (RID_STATIC, specbits))
9634 DECL_THIS_STATIC (decl) = 1;
9636 /* Record constancy and volatility. */
9639 TREE_READONLY (decl) = TREE_CODE (type) != REFERENCE_TYPE;
9642 TREE_SIDE_EFFECTS (decl) = 1;
9643 TREE_THIS_VOLATILE (decl) = 1;
9650 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
9651 An empty exprlist is a parmlist. An exprlist which
9652 contains only identifiers at the global level
9653 is a parmlist. Otherwise, it is an exprlist. */
9656 parmlist_is_exprlist (exprs)
9659 if (exprs == NULL_TREE || TREE_PARMLIST (exprs))
9662 if (toplevel_bindings_p ())
9664 /* At the global level, if these are all identifiers,
9665 then it is a parmlist. */
9668 if (TREE_CODE (TREE_VALUE (exprs)) != IDENTIFIER_NODE)
9670 exprs = TREE_CHAIN (exprs);
9677 /* Subroutine of `grokparms'. In a fcn definition, arg types must
9680 C++: also subroutine of `start_function'. */
9683 require_complete_types_for_parms (parms)
9686 if (processing_template_decl)
9691 tree type = TREE_TYPE (parms);
9692 if (TYPE_SIZE (complete_type (type)) == NULL_TREE)
9694 if (DECL_NAME (parms))
9695 error ("parameter `%s' has incomplete type",
9696 IDENTIFIER_POINTER (DECL_NAME (parms)));
9698 error ("parameter has incomplete type");
9699 TREE_TYPE (parms) = error_mark_node;
9702 /* If the arg types are incomplete in a declaration,
9703 they must include undefined tags.
9704 These tags can never be defined in the scope of the declaration,
9705 so the types can never be completed,
9706 and no call can be compiled successfully. */
9707 /* This is not the right behavior for C++, but not having
9708 it is also probably wrong. */
9711 /* Now warn if is a pointer to an incomplete type. */
9712 while (TREE_CODE (type) == POINTER_TYPE
9713 || TREE_CODE (type) == REFERENCE_TYPE)
9714 type = TREE_TYPE (type);
9715 type = TYPE_MAIN_VARIANT (type);
9716 if (TYPE_SIZE (type) == NULL_TREE)
9718 if (DECL_NAME (parm) != NULL_TREE)
9719 warning ("parameter `%s' points to incomplete type",
9720 IDENTIFIER_POINTER (DECL_NAME (parm)));
9722 warning ("parameter points to incomplete type");
9726 parms = TREE_CHAIN (parms);
9730 /* Decode the list of parameter types for a function type.
9731 Given the list of things declared inside the parens,
9732 return a list of types.
9734 The list we receive can have three kinds of elements:
9735 an IDENTIFIER_NODE for names given without types,
9736 a TREE_LIST node for arguments given as typespecs or names with typespecs,
9737 or void_type_node, to mark the end of an argument list
9738 when additional arguments are not permitted (... was not used).
9740 FUNCDEF_FLAG is nonzero for a function definition, 0 for
9741 a mere declaration. A nonempty identifier-list gets an error message
9742 when FUNCDEF_FLAG is zero.
9743 If FUNCDEF_FLAG is 1, then parameter types must be complete.
9744 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
9746 If all elements of the input list contain types,
9747 we return a list of the types.
9748 If all elements contain no type (except perhaps a void_type_node
9749 at the end), we return a null list.
9750 If some have types and some do not, it is an error, and we
9753 Also set last_function_parms to either
9754 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
9755 A list of names is converted to a chain of PARM_DECLs
9756 by store_parm_decls so that ultimately it is always a chain of decls.
9758 Note that in C++, parameters can take default values. These default
9759 values are in the TREE_PURPOSE field of the TREE_LIST. It is
9760 an error to specify default values which are followed by parameters
9761 that have no default values, or an ELLIPSES. For simplicities sake,
9762 only parameters which are specified with their types can take on
9766 grokparms (first_parm, funcdef_flag)
9770 tree result = NULL_TREE;
9771 tree decls = NULL_TREE;
9773 if (first_parm != NULL_TREE
9774 && TREE_CODE (TREE_VALUE (first_parm)) == IDENTIFIER_NODE)
9777 pedwarn ("parameter names (without types) in function declaration");
9778 last_function_parms = first_parm;
9781 else if (first_parm != NULL_TREE
9782 && TREE_CODE (TREE_VALUE (first_parm)) != TREE_LIST
9783 && TREE_VALUE (first_parm) != void_type_node)
9784 my_friendly_abort (145);
9787 /* Types were specified. This is a list of declarators
9788 each represented as a TREE_LIST node. */
9789 register tree parm, chain;
9790 int any_init = 0, any_error = 0;
9792 if (first_parm != NULL_TREE)
9794 tree last_result = NULL_TREE;
9795 tree last_decl = NULL_TREE;
9797 for (parm = first_parm; parm != NULL_TREE; parm = chain)
9799 tree type, list_node = parm;
9800 register tree decl = TREE_VALUE (parm);
9801 tree init = TREE_PURPOSE (parm);
9803 chain = TREE_CHAIN (parm);
9804 /* @@ weak defense against parse errors. */
9805 if (decl != void_type_node && TREE_CODE (decl) != TREE_LIST)
9807 /* Give various messages as the need arises. */
9808 if (TREE_CODE (decl) == STRING_CST)
9809 cp_error ("invalid string constant `%E'", decl);
9810 else if (TREE_CODE (decl) == INTEGER_CST)
9811 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
9815 if (decl != void_type_node)
9817 decl = grokdeclarator (TREE_VALUE (decl),
9818 TREE_PURPOSE (decl),
9819 PARM, init != NULL_TREE,
9823 type = TREE_TYPE (decl);
9824 if (TYPE_MAIN_VARIANT (type) == void_type_node)
9825 decl = void_type_node;
9826 else if (TREE_CODE (type) == METHOD_TYPE)
9828 if (DECL_NAME (decl))
9829 /* Cannot use the decl here because
9830 we don't have DECL_CONTEXT set up yet. */
9831 cp_error ("parameter `%D' invalidly declared method type",
9834 error ("parameter invalidly declared method type");
9835 type = build_pointer_type (type);
9836 TREE_TYPE (decl) = type;
9838 else if (TREE_CODE (type) == OFFSET_TYPE)
9840 if (DECL_NAME (decl))
9841 cp_error ("parameter `%D' invalidly declared offset type",
9844 error ("parameter invalidly declared offset type");
9845 type = build_pointer_type (type);
9846 TREE_TYPE (decl) = type;
9848 else if (TREE_CODE (type) == RECORD_TYPE
9849 && TYPE_LANG_SPECIFIC (type)
9850 && CLASSTYPE_ABSTRACT_VIRTUALS (type))
9852 abstract_virtuals_error (decl, type);
9853 any_error = 1; /* seems like a good idea */
9855 else if (TREE_CODE (type) == RECORD_TYPE
9856 && TYPE_LANG_SPECIFIC (type)
9857 && IS_SIGNATURE (type))
9859 signature_error (decl, type);
9860 any_error = 1; /* seems like a good idea */
9864 if (decl == void_type_node)
9866 if (result == NULL_TREE)
9868 result = void_list_node;
9869 last_result = result;
9873 TREE_CHAIN (last_result) = void_list_node;
9874 last_result = void_list_node;
9877 && (chain != void_list_node || TREE_CHAIN (chain)))
9878 error ("`void' in parameter list must be entire list");
9882 /* Since there is a prototype, args are passed in their own types. */
9883 DECL_ARG_TYPE (decl) = TREE_TYPE (decl);
9884 #ifdef PROMOTE_PROTOTYPES
9885 if ((TREE_CODE (type) == INTEGER_TYPE
9886 || TREE_CODE (type) == ENUMERAL_TYPE)
9887 && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node))
9888 DECL_ARG_TYPE (decl) = integer_type_node;
9895 if (TREE_CODE (init) == SAVE_EXPR)
9896 PARM_DECL_EXPR (init) = 1;
9897 else if (processing_template_decl)
9899 else if (TREE_CODE (init) == VAR_DECL
9900 || TREE_CODE (init) == PARM_DECL)
9902 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init)))
9904 /* ``Local variables may not be used in default
9905 argument expressions.'' dpANSI C++ 8.2.6 */
9906 /* If extern int i; within a function is not
9907 considered a local variable, then this code is
9909 cp_error ("local variable `%D' may not be used as a default argument", init);
9912 else if (TREE_READONLY_DECL_P (init))
9913 init = decl_constant_value (init);
9916 init = require_instantiated_type (type, init, integer_zero_node);
9917 if (! processing_template_decl
9918 && ! can_convert_arg (type, TREE_TYPE (init), init))
9919 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
9920 TREE_TYPE (init), decl);
9926 if (decls == NULL_TREE)
9933 TREE_CHAIN (last_decl) = decl;
9936 if (TREE_PERMANENT (list_node))
9938 TREE_PURPOSE (list_node) = init;
9939 TREE_VALUE (list_node) = type;
9940 TREE_CHAIN (list_node) = NULL_TREE;
9943 list_node = saveable_tree_cons (init, type, NULL_TREE);
9944 if (result == NULL_TREE)
9947 last_result = result;
9951 TREE_CHAIN (last_result) = list_node;
9952 last_result = list_node;
9956 TREE_CHAIN (last_result) = NULL_TREE;
9957 /* If there are no parameters, and the function does not end
9958 with `...', then last_decl will be NULL_TREE. */
9959 if (last_decl != NULL_TREE)
9960 TREE_CHAIN (last_decl) = NULL_TREE;
9964 last_function_parms = decls;
9966 /* In a fcn definition, arg types must be complete. */
9967 if (funcdef_flag > 0)
9968 require_complete_types_for_parms (last_function_parms);
9977 tree t = FUNCTION_ARG_CHAIN (d);
9978 if (t && TREE_CODE (TREE_VALUE (t)) == REFERENCE_TYPE
9979 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t)))
9980 == DECL_CLASS_CONTEXT (d))
9981 && (TREE_CHAIN (t) == NULL_TREE
9982 || TREE_CHAIN (t) == void_list_node
9983 || TREE_PURPOSE (TREE_CHAIN (t))))
9988 /* These memoizing functions keep track of special properties which
9989 a class may have. `grok_ctor_properties' notices whether a class
9990 has a constructor of the form X(X&), and also complains
9991 if the class has a constructor of the form X(X).
9992 `grok_op_properties' takes notice of the various forms of
9993 operator= which are defined, as well as what sorts of type conversion
9994 may apply. Both functions take a FUNCTION_DECL as an argument. */
9997 grok_ctor_properties (ctype, decl)
10000 tree parmtypes = FUNCTION_ARG_CHAIN (decl);
10001 tree parmtype = parmtypes ? TREE_VALUE (parmtypes) : void_type_node;
10003 /* When a type has virtual baseclasses, a magical first int argument is
10004 added to any ctor so we can tell if the class has been initialized
10005 yet. This could screw things up in this function, so we deliberately
10006 ignore the leading int if we're in that situation. */
10008 && TREE_VALUE (parmtypes) == integer_type_node
10009 && TYPE_USES_VIRTUAL_BASECLASSES (ctype))
10011 parmtypes = TREE_CHAIN (parmtypes);
10012 parmtype = TREE_VALUE (parmtypes);
10015 if (TREE_CODE (parmtype) == REFERENCE_TYPE
10016 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype)) == ctype)
10018 if (TREE_CHAIN (parmtypes) == NULL_TREE
10019 || TREE_CHAIN (parmtypes) == void_list_node
10020 || TREE_PURPOSE (TREE_CHAIN (parmtypes)))
10022 TYPE_HAS_INIT_REF (ctype) = 1;
10023 if (TYPE_READONLY (TREE_TYPE (parmtype)))
10024 TYPE_HAS_CONST_INIT_REF (ctype) = 1;
10027 TYPE_GETS_INIT_AGGR (ctype) = 1;
10029 else if (TYPE_MAIN_VARIANT (parmtype) == ctype)
10031 if (TREE_CHAIN (parmtypes) != NULL_TREE
10032 && TREE_CHAIN (parmtypes) == void_list_node)
10034 cp_error ("invalid constructor; you probably meant `%T (%T&)'",
10036 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl), ctype);
10041 TYPE_GETS_INIT_AGGR (ctype) = 1;
10043 else if (TREE_CODE (parmtype) == VOID_TYPE
10044 || TREE_PURPOSE (parmtypes) != NULL_TREE)
10045 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype) = 1;
10050 /* An operator with this name can be either unary or binary. */
10056 return (name == ansi_opname [(int) INDIRECT_REF]
10057 || name == ansi_opname [(int) ADDR_EXPR]
10058 || name == ansi_opname [(int) NEGATE_EXPR]
10059 || name == ansi_opname[(int) POSTINCREMENT_EXPR]
10060 || name == ansi_opname[(int) POSTDECREMENT_EXPR]
10061 || name == ansi_opname [(int) CONVERT_EXPR]);
10064 /* An operator with this name can only be unary. */
10070 return (name == ansi_opname [(int) TRUTH_NOT_EXPR]
10071 || name == ansi_opname [(int) BIT_NOT_EXPR]
10072 || name == ansi_opname [(int) COMPONENT_REF]
10073 || OPERATOR_TYPENAME_P (name));
10076 /* Do a little sanity-checking on how they declared their operator. */
10079 grok_op_properties (decl, virtualp, friendp)
10081 int virtualp, friendp;
10083 tree argtypes = TYPE_ARG_TYPES (TREE_TYPE (decl));
10084 int methodp = (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE);
10085 tree name = DECL_NAME (decl);
10087 if (current_class_type == NULL_TREE)
10092 if (name == ansi_opname[(int) MODIFY_EXPR])
10093 TYPE_HAS_ASSIGNMENT (current_class_type) = 1;
10094 else if (name == ansi_opname[(int) CALL_EXPR])
10095 TYPE_OVERLOADS_CALL_EXPR (current_class_type) = 1;
10096 else if (name == ansi_opname[(int) ARRAY_REF])
10097 TYPE_OVERLOADS_ARRAY_REF (current_class_type) = 1;
10098 else if (name == ansi_opname[(int) COMPONENT_REF]
10099 || name == ansi_opname[(int) MEMBER_REF])
10100 TYPE_OVERLOADS_ARROW (current_class_type) = 1;
10101 else if (name == ansi_opname[(int) NEW_EXPR])
10102 TYPE_GETS_NEW (current_class_type) |= 1;
10103 else if (name == ansi_opname[(int) DELETE_EXPR])
10104 TYPE_GETS_DELETE (current_class_type) |= 1;
10105 else if (name == ansi_opname[(int) VEC_NEW_EXPR])
10106 TYPE_GETS_NEW (current_class_type) |= 2;
10107 else if (name == ansi_opname[(int) VEC_DELETE_EXPR])
10108 TYPE_GETS_DELETE (current_class_type) |= 2;
10111 if (name == ansi_opname[(int) NEW_EXPR]
10112 || name == ansi_opname[(int) VEC_NEW_EXPR])
10114 /* When the compiler encounters the definition of A::operator new, it
10115 doesn't look at the class declaration to find out if it's static. */
10117 revert_static_member_fn (&decl, NULL, NULL);
10119 /* Take care of function decl if we had syntax errors. */
10120 if (argtypes == NULL_TREE)
10122 build_function_type (ptr_type_node,
10123 hash_tree_chain (integer_type_node,
10126 TREE_TYPE (decl) = coerce_new_type (TREE_TYPE (decl));
10128 else if (name == ansi_opname[(int) DELETE_EXPR]
10129 || name == ansi_opname[(int) VEC_DELETE_EXPR])
10132 revert_static_member_fn (&decl, NULL, NULL);
10134 if (argtypes == NULL_TREE)
10136 build_function_type (void_type_node,
10137 hash_tree_chain (ptr_type_node,
10141 TREE_TYPE (decl) = coerce_delete_type (TREE_TYPE (decl));
10143 if (! friendp && name == ansi_opname[(int) VEC_DELETE_EXPR]
10144 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl)))
10145 != void_list_node))
10146 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type) = 1;
10151 /* An operator function must either be a non-static member function
10152 or have at least one parameter of a class, a reference to a class,
10153 an enumeration, or a reference to an enumeration. 13.4.0.6 */
10154 if (! methodp || DECL_STATIC_FUNCTION_P (decl))
10156 if (OPERATOR_TYPENAME_P (name)
10157 || name == ansi_opname[(int) CALL_EXPR]
10158 || name == ansi_opname[(int) MODIFY_EXPR]
10159 || name == ansi_opname[(int) COMPONENT_REF]
10160 || name == ansi_opname[(int) ARRAY_REF])
10161 cp_error ("`%D' must be a nonstatic member function", decl);
10166 if (DECL_STATIC_FUNCTION_P (decl))
10167 cp_error ("`%D' must be either a non-static member function or a non-member function", decl);
10170 for (; TREE_VALUE (p) != void_type_node ; p = TREE_CHAIN (p))
10172 tree arg = TREE_VALUE (p);
10173 if (TREE_CODE (arg) == REFERENCE_TYPE)
10174 arg = TREE_TYPE (arg);
10176 /* This lets bad template code slip through. */
10177 if (IS_AGGR_TYPE (arg)
10178 || TREE_CODE (arg) == ENUMERAL_TYPE
10179 || TREE_CODE (arg) == TEMPLATE_TYPE_PARM)
10183 ("`%D' must have an argument of class or enumerated type",
10190 if (name == ansi_opname[(int) CALL_EXPR]
10191 || name == ansi_opname[(int) METHOD_CALL_EXPR])
10192 return; /* no restrictions on args */
10194 if (IDENTIFIER_TYPENAME_P (name))
10196 tree t = TREE_TYPE (name);
10197 if (TREE_CODE (t) == VOID_TYPE)
10198 pedwarn ("void is not a valid type conversion operator");
10199 else if (! friendp)
10201 int ref = (TREE_CODE (t) == REFERENCE_TYPE);
10204 t = TYPE_MAIN_VARIANT (TREE_TYPE (t));
10206 if (t == current_class_type)
10207 what = "the same type";
10208 else if (IS_AGGR_TYPE (t)
10209 && DERIVED_FROM_P (t, current_class_type))
10210 what = "a base class";
10213 warning ("conversion to %s%s will never use a type conversion operator",
10214 ref ? "a reference to " : "", what);
10218 if (name == ansi_opname[(int) MODIFY_EXPR])
10222 if (list_length (argtypes) != 3 && methodp)
10224 cp_error ("`%D' must take exactly one argument", decl);
10227 parmtype = TREE_VALUE (TREE_CHAIN (argtypes));
10229 if (copy_assignment_arg_p (parmtype, virtualp)
10232 TYPE_HAS_ASSIGN_REF (current_class_type) = 1;
10233 if (TREE_CODE (parmtype) != REFERENCE_TYPE
10234 || TYPE_READONLY (TREE_TYPE (parmtype)))
10235 TYPE_HAS_CONST_ASSIGN_REF (current_class_type) = 1;
10238 else if (name == ansi_opname[(int) COND_EXPR])
10241 pedwarn ("ANSI C++ prohibits overloading operator ?:");
10242 if (list_length (argtypes) != 4)
10243 cp_error ("`%D' must take exactly three arguments", decl);
10245 else if (ambi_op_p (name))
10247 if (list_length (argtypes) == 2)
10249 else if (list_length (argtypes) == 3)
10251 if ((name == ansi_opname[(int) POSTINCREMENT_EXPR]
10252 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
10253 && ! processing_template_decl
10254 && TREE_VALUE (TREE_CHAIN (argtypes)) != integer_type_node)
10257 cp_error ("postfix `%D' must take `int' as its argument",
10261 ("postfix `%D' must take `int' as its second argument",
10268 cp_error ("`%D' must take either zero or one argument", decl);
10270 cp_error ("`%D' must take either one or two arguments", decl);
10273 else if (unary_op_p (name))
10275 if (list_length (argtypes) != 2)
10278 cp_error ("`%D' must take `void'", decl);
10280 cp_error ("`%D' must take exactly one argument", decl);
10283 else /* if (binary_op_p (name)) */
10285 if (list_length (argtypes) != 3)
10288 cp_error ("`%D' must take exactly one argument", decl);
10290 cp_error ("`%D' must take exactly two arguments", decl);
10296 for (; argtypes != void_list_node ; argtypes = TREE_CHAIN (argtypes))
10297 if (TREE_PURPOSE (argtypes))
10299 TREE_PURPOSE (argtypes) = NULL_TREE;
10300 if (name == ansi_opname[(int) POSTINCREMENT_EXPR]
10301 || name == ansi_opname[(int) POSTDECREMENT_EXPR])
10304 cp_pedwarn ("`%D' cannot have default arguments", decl);
10307 cp_error ("`%D' cannot have default arguments", decl);
10312 /* Get the struct, enum or union (CODE says which) with tag NAME.
10313 Define the tag as a forward-reference if it is not defined.
10315 C++: If a class derivation is given, process it here, and report
10316 an error if multiple derivation declarations are not identical.
10318 If this is a definition, come in through xref_tag and only look in
10319 the current frame for the name (since C++ allows new names in any
10323 xref_tag (code_type_node, name, binfo, globalize)
10324 tree code_type_node;
10328 enum tag_types tag_code;
10329 enum tree_code code;
10331 register tree ref, t;
10332 struct binding_level *b = inner_binding_level;
10335 tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
10340 case signature_type:
10341 code = RECORD_TYPE;
10347 code = ENUMERAL_TYPE;
10350 my_friendly_abort (18);
10353 /* If a cross reference is requested, look up the type
10354 already defined for this tag and return it. */
10355 if (TREE_CODE_CLASS (TREE_CODE (name)) == 't')
10358 name = TYPE_IDENTIFIER (t);
10362 t = IDENTIFIER_TYPE_VALUE (name);
10363 if (t && TREE_CODE (t) != code && TREE_CODE (t) != TEMPLATE_TYPE_PARM)
10368 if (pedantic && t && TREE_CODE (t) == TEMPLATE_TYPE_PARM)
10370 cp_pedwarn ("redeclaration of template type-parameter `%T'", name);
10371 cp_pedwarn_at (" previously declared here", t);
10373 if (t && TYPE_CONTEXT (t) && got_type)
10377 /* If we know we are defining this tag, only look it up in
10378 this scope and don't try to find it as a type. */
10379 ref = lookup_tag (code, name, b, 1);
10387 ref = lookup_tag (code, name, b, 0);
10391 /* Try finding it as a type declaration. If that wins, use it. */
10392 ref = lookup_name (name, 1);
10393 if (ref && TREE_CODE (ref) == TYPE_DECL
10394 && TREE_CODE (TREE_TYPE (ref)) == code)
10395 ref = TREE_TYPE (ref);
10401 push_obstacks_nochange ();
10405 /* If no such tag is yet defined, create a forward-reference node
10406 and record it as the "definition".
10407 When a real declaration of this type is found,
10408 the forward-reference will be altered into a real type. */
10410 /* In C++, since these migrate into the global scope, we must
10411 build them on the permanent obstack. */
10413 temp = allocation_temporary_p ();
10415 end_temporary_allocation ();
10417 if (code == ENUMERAL_TYPE)
10419 cp_error ("use of enum `%#D' without previous declaration", name);
10421 ref = make_node (ENUMERAL_TYPE);
10423 /* Give the type a default layout like unsigned int
10424 to avoid crashing if it does not get defined. */
10425 TYPE_MODE (ref) = TYPE_MODE (unsigned_type_node);
10426 TYPE_ALIGN (ref) = TYPE_ALIGN (unsigned_type_node);
10427 TREE_UNSIGNED (ref) = 1;
10428 TYPE_PRECISION (ref) = TYPE_PRECISION (unsigned_type_node);
10429 TYPE_MIN_VALUE (ref) = TYPE_MIN_VALUE (unsigned_type_node);
10430 TYPE_MAX_VALUE (ref) = TYPE_MAX_VALUE (unsigned_type_node);
10432 /* Enable us to recognize when a type is created in class context.
10433 To do nested classes correctly, this should probably be cleared
10434 out when we leave this classes scope. Currently this in only
10435 done in `start_enum'. */
10437 pushtag (name, ref, globalize);
10441 struct binding_level *old_b = class_binding_level;
10443 ref = make_lang_type (code);
10445 if (tag_code == signature_type)
10447 SET_SIGNATURE (ref);
10448 /* Since a signature type will be turned into the type
10449 of signature tables, it's not only an interface. */
10450 CLASSTYPE_INTERFACE_ONLY (ref) = 0;
10451 SET_CLASSTYPE_INTERFACE_KNOWN (ref);
10452 /* A signature doesn't have a vtable. */
10453 CLASSTYPE_VTABLE_NEEDS_WRITING (ref) = 0;
10456 #ifdef NONNESTED_CLASSES
10457 /* Class types don't nest the way enums do. */
10458 class_binding_level = (struct binding_level *)0;
10460 pushtag (name, ref, globalize);
10461 class_binding_level = old_b;
10466 /* If it no longer looks like a nested type, make sure it's
10467 in global scope. */
10468 if (b == global_binding_level && !class_binding_level
10469 && IDENTIFIER_GLOBAL_VALUE (name) == NULL_TREE)
10470 IDENTIFIER_GLOBAL_VALUE (name) = TYPE_NAME (ref);
10474 xref_basetypes (code_type_node, name, ref, binfo);
10478 /* Until the type is defined, tentatively accept whatever
10479 structure tag the user hands us. */
10480 if (TYPE_SIZE (ref) == NULL_TREE
10481 && ref != current_class_type
10482 /* Have to check this, in case we have contradictory tag info. */
10483 && IS_AGGR_TYPE_CODE (TREE_CODE (ref)))
10485 if (tag_code == class_type)
10486 CLASSTYPE_DECLARED_CLASS (ref) = 1;
10487 else if (tag_code == record_type || tag_code == signature_type)
10488 CLASSTYPE_DECLARED_CLASS (ref) = 0;
10497 xref_tag_from_type (old, id, globalize)
10501 tree code_type_node;
10503 if (TREE_CODE (old) == RECORD_TYPE)
10504 code_type_node = (CLASSTYPE_DECLARED_CLASS (old)
10505 ? class_type_node : record_type_node);
10507 code_type_node = union_type_node;
10509 if (id == NULL_TREE)
10510 id = TYPE_IDENTIFIER (old);
10512 return xref_tag (code_type_node, id, NULL_TREE, globalize);
10516 xref_basetypes (code_type_node, name, ref, binfo)
10517 tree code_type_node;
10521 /* In the declaration `A : X, Y, ... Z' we mark all the types
10522 (A, X, Y, ..., Z) so we can check for duplicates. */
10525 enum tag_types tag_code = (enum tag_types) TREE_INT_CST_LOW (code_type_node);
10527 if (tag_code == union_type)
10529 cp_error ("derived union `%T' invalid", ref);
10533 len = list_length (binfo);
10534 push_obstacks (TYPE_OBSTACK (ref), TYPE_OBSTACK (ref));
10536 SET_CLASSTYPE_MARKED (ref);
10537 BINFO_BASETYPES (TYPE_BINFO (ref)) = binfos = make_tree_vec (len);
10539 for (i = 0; binfo; binfo = TREE_CHAIN (binfo))
10541 /* The base of a derived struct is public by default. */
10543 = (TREE_PURPOSE (binfo) == access_public_node
10544 || TREE_PURPOSE (binfo) == access_public_virtual_node
10545 || (tag_code != class_type
10546 && (TREE_PURPOSE (binfo) == access_default_node
10547 || TREE_PURPOSE (binfo) == access_default_virtual_node)));
10548 int via_protected = TREE_PURPOSE (binfo) == access_protected_node;
10550 = (TREE_PURPOSE (binfo) == access_private_virtual_node
10551 || TREE_PURPOSE (binfo) == access_public_virtual_node
10552 || TREE_PURPOSE (binfo) == access_default_virtual_node);
10553 tree basetype = TREE_VALUE (binfo);
10556 GNU_xref_hier (IDENTIFIER_POINTER (name),
10557 IDENTIFIER_POINTER (TREE_VALUE (binfo)),
10558 via_public, via_virtual, 0);
10560 if (basetype && TREE_CODE (basetype) == TYPE_DECL)
10561 basetype = TREE_TYPE (basetype);
10563 || (TREE_CODE (basetype) != RECORD_TYPE
10564 && TREE_CODE (basetype) != TYPENAME_TYPE
10565 && TREE_CODE (basetype) != TEMPLATE_TYPE_PARM))
10567 cp_error ("base type `%T' fails to be a struct or class type",
10568 TREE_VALUE (binfo));
10572 /* This code replaces similar code in layout_basetypes. */
10573 else if (TREE_CODE (basetype) != TEMPLATE_TYPE_PARM
10574 && TREE_CODE (basetype) != TYPENAME_TYPE
10575 && TYPE_SIZE (complete_type (basetype)) == NULL_TREE)
10577 cp_error ("base class `%T' has incomplete type", basetype);
10583 if (CLASSTYPE_MARKED (basetype))
10585 if (basetype == ref)
10586 cp_error ("recursive type `%T' undefined", basetype);
10588 cp_error ("duplicate base type `%T' invalid", basetype);
10592 /* Note that the BINFO records which describe individual
10593 inheritances are *not* shared in the lattice! They
10594 cannot be shared because a given baseclass may be
10595 inherited with different `accessibility' by different
10596 derived classes. (Each BINFO record describing an
10597 individual inheritance contains flags which say what
10598 the `accessibility' of that particular inheritance is.) */
10600 base_binfo = make_binfo (integer_zero_node, basetype,
10601 TYPE_BINFO_VTABLE (basetype),
10602 TYPE_BINFO_VIRTUALS (basetype), NULL_TREE);
10604 TREE_VEC_ELT (binfos, i) = base_binfo;
10605 TREE_VIA_PUBLIC (base_binfo) = via_public;
10606 TREE_VIA_PROTECTED (base_binfo) = via_protected;
10607 TREE_VIA_VIRTUAL (base_binfo) = via_virtual;
10608 BINFO_INHERITANCE_CHAIN (base_binfo) = TYPE_BINFO (ref);
10610 SET_CLASSTYPE_MARKED (basetype);
10612 /* We are free to modify these bits because they are meaningless
10613 at top level, and BASETYPE is a top-level type. */
10614 if (via_virtual || TYPE_USES_VIRTUAL_BASECLASSES (basetype))
10616 TYPE_USES_VIRTUAL_BASECLASSES (ref) = 1;
10617 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
10620 TYPE_OVERLOADS_METHOD_CALL_EXPR (ref) |= TYPE_OVERLOADS_METHOD_CALL_EXPR (basetype);
10621 TYPE_GETS_NEW (ref) |= TYPE_GETS_NEW (basetype);
10622 TYPE_GETS_DELETE (ref) |= TYPE_GETS_DELETE (basetype);
10623 CLASSTYPE_LOCAL_TYPEDECLS (ref) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype);
10628 TREE_VEC_LENGTH (binfos) = i;
10630 BINFO_BASETYPES (TYPE_BINFO (ref)) = NULL_TREE;
10633 TYPE_USES_MULTIPLE_INHERITANCE (ref) = 1;
10635 TYPE_USES_MULTIPLE_INHERITANCE (ref)
10636 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos, 0)));
10637 if (TYPE_USES_MULTIPLE_INHERITANCE (ref))
10638 TYPE_USES_COMPLEX_INHERITANCE (ref) = 1;
10640 /* Unmark all the types. */
10642 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos, i)));
10643 CLEAR_CLASSTYPE_MARKED (ref);
10649 static tree current_local_enum = NULL_TREE;
10651 /* Begin compiling the definition of an enumeration type.
10652 NAME is its name (or null if anonymous).
10653 Returns the type object, as yet incomplete.
10654 Also records info about it so that build_enumerator
10655 may be used to declare the individual values as they are read. */
10661 register tree enumtype = NULL_TREE;
10662 struct binding_level *b = inner_binding_level;
10664 /* If this is the real definition for a previous forward reference,
10665 fill in the contents in the same object that used to be the
10666 forward reference. */
10668 if (name != NULL_TREE)
10669 enumtype = lookup_tag (ENUMERAL_TYPE, name, b, 1);
10671 if (enumtype != NULL_TREE && TREE_CODE (enumtype) == ENUMERAL_TYPE)
10672 cp_error ("multiple definition of `%#T'", enumtype);
10675 enumtype = make_node (ENUMERAL_TYPE);
10676 pushtag (name, enumtype, 0);
10679 if (b->pseudo_global)
10680 cp_error ("template declaration of `%#T'", enumtype);
10682 if (current_class_type)
10683 TREE_ADDRESSABLE (b->tags) = 1;
10685 current_local_enum = NULL_TREE;
10687 /* We don't copy this value because build_enumerator needs to do it. */
10688 enum_next_value = integer_zero_node;
10691 GNU_xref_decl (current_function_decl, enumtype);
10695 /* After processing and defining all the values of an enumeration type,
10696 install their decls in the enumeration type and finish it off.
10697 ENUMTYPE is the type object and VALUES a list of name-value pairs.
10698 Returns ENUMTYPE. */
10701 finish_enum (enumtype, values)
10702 register tree enumtype, values;
10704 register tree minnode, maxnode;
10705 /* Calculate the maximum value of any enumerator in this type. */
10709 register tree pair;
10710 register tree value = DECL_INITIAL (TREE_VALUE (values));
10712 if (! processing_template_decl)
10714 /* Speed up the main loop by performing some precalculations */
10715 TREE_TYPE (TREE_VALUE (values)) = enumtype;
10716 TREE_TYPE (value) = enumtype;
10717 minnode = maxnode = value;
10719 TREE_VALUE (values) = value;
10721 for (pair = TREE_CHAIN (values); pair; pair = TREE_CHAIN (pair))
10723 value = DECL_INITIAL (TREE_VALUE (pair));
10724 if (! processing_template_decl)
10726 TREE_TYPE (TREE_VALUE (pair)) = enumtype;
10727 TREE_TYPE (value) = enumtype;
10728 if (tree_int_cst_lt (maxnode, value))
10730 else if (tree_int_cst_lt (value, minnode))
10733 TREE_VALUE (pair) = value;
10737 maxnode = minnode = integer_zero_node;
10739 TYPE_VALUES (enumtype) = values;
10741 if (processing_template_decl)
10745 int unsignedp = tree_int_cst_sgn (minnode) >= 0;
10746 int lowprec = min_precision (minnode, unsignedp);
10747 int highprec = min_precision (maxnode, unsignedp);
10748 int precision = MAX (lowprec, highprec);
10750 TYPE_SIZE (enumtype) = NULL_TREE;
10752 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
10754 TYPE_PRECISION (enumtype) = precision;
10756 fixup_unsigned_type (enumtype);
10758 fixup_signed_type (enumtype);
10760 if (flag_short_enums || (precision > TYPE_PRECISION (integer_type_node)))
10761 /* Use the width of the narrowest normal C type which is wide enough. */
10762 TYPE_PRECISION (enumtype) = TYPE_PRECISION (type_for_size
10765 TYPE_PRECISION (enumtype) = TYPE_PRECISION (integer_type_node);
10767 TYPE_SIZE (enumtype) = 0;
10768 layout_type (enumtype);
10774 /* Fix up all variant types of this enum type. */
10775 for (tem = TYPE_MAIN_VARIANT (enumtype); tem;
10776 tem = TYPE_NEXT_VARIANT (tem))
10778 TYPE_VALUES (tem) = TYPE_VALUES (enumtype);
10779 TYPE_MIN_VALUE (tem) = TYPE_MIN_VALUE (enumtype);
10780 TYPE_MAX_VALUE (tem) = TYPE_MAX_VALUE (enumtype);
10781 TYPE_SIZE (tem) = TYPE_SIZE (enumtype);
10782 TYPE_MODE (tem) = TYPE_MODE (enumtype);
10783 TYPE_PRECISION (tem) = TYPE_PRECISION (enumtype);
10784 TYPE_ALIGN (tem) = TYPE_ALIGN (enumtype);
10785 TREE_UNSIGNED (tem) = TREE_UNSIGNED (enumtype);
10789 /* Finish debugging output for this type. */
10790 rest_of_type_compilation (enumtype, global_bindings_p ());
10795 /* Build and install a CONST_DECL for one value of the
10796 current enumeration type (one that was begun with start_enum).
10797 Return a tree-list containing the name and its value.
10798 Assignment of sequential values by default is handled here. */
10801 build_enumerator (name, value)
10806 /* Remove no-op casts from the value. */
10808 STRIP_TYPE_NOPS (value);
10810 if (! processing_template_decl)
10812 /* Validate and default VALUE. */
10813 if (value != NULL_TREE)
10815 if (TREE_READONLY_DECL_P (value))
10816 value = decl_constant_value (value);
10818 if (TREE_CODE (value) == INTEGER_CST)
10820 value = default_conversion (value);
10821 constant_expression_warning (value);
10825 cp_error ("enumerator value for `%D' not integer constant", name);
10830 /* Default based on previous value. */
10831 if (value == NULL_TREE && ! processing_template_decl)
10833 value = enum_next_value;
10835 cp_error ("overflow in enumeration values at `%D'", name);
10838 /* Remove no-op casts from the value. */
10840 STRIP_TYPE_NOPS (value);
10842 /* We have to always copy here; not all INTEGER_CSTs are unshared,
10843 and there's no wedding ring. Look at size_int()...*/
10844 value = copy_node (value);
10845 TREE_TYPE (value) = integer_type_node;
10848 /* C++ associates enums with global, function, or class declarations. */
10850 decl = current_scope ();
10851 if (decl && decl == current_class_type)
10853 /* This enum declaration is local to the class, so we must put
10854 it in that class's list of decls. */
10855 decl = build_lang_field_decl (CONST_DECL, name, integer_type_node);
10856 DECL_INITIAL (decl) = value;
10857 TREE_READONLY (decl) = 1;
10858 pushdecl_class_level (decl);
10859 TREE_CHAIN (decl) = current_local_enum;
10860 current_local_enum = decl;
10864 /* It's a global enum, or it's local to a function. (Note local to
10865 a function could mean local to a class method. */
10866 decl = build_decl (CONST_DECL, name, integer_type_node);
10867 DECL_INITIAL (decl) = value;
10870 GNU_xref_decl (current_function_decl, decl);
10873 if (! processing_template_decl)
10875 /* Set basis for default for next value. */
10876 enum_next_value = build_binary_op_nodefault (PLUS_EXPR, value,
10877 integer_one_node, PLUS_EXPR);
10878 enum_overflow = tree_int_cst_lt (enum_next_value, value);
10881 result = saveable_tree_cons (name, decl, NULL_TREE);
10886 grok_enum_decls (type, decl)
10889 tree d = current_local_enum;
10891 if (d == NULL_TREE)
10896 TREE_TYPE (d) = type;
10897 if (TREE_CHAIN (d) == NULL_TREE)
10899 TREE_CHAIN (d) = decl;
10902 d = TREE_CHAIN (d);
10905 decl = current_local_enum;
10906 current_local_enum = NULL_TREE;
10911 static int function_depth;
10913 /* Create the FUNCTION_DECL for a function definition.
10914 DECLSPECS and DECLARATOR are the parts of the declaration;
10915 they describe the function's name and the type it returns,
10916 but twisted together in a fashion that parallels the syntax of C.
10918 This function creates a binding context for the function body
10919 as well as setting up the FUNCTION_DECL in current_function_decl.
10921 Returns 1 on success. If the DECLARATOR is not suitable for a function
10922 (it defines a datum instead), we return 0, which tells
10923 yyparse to report a parse error.
10925 For C++, we must first check whether that datum makes any sense.
10926 For example, "class A local_a(1,2);" means that variable local_a
10927 is an aggregate of type A, which should have a constructor
10928 applied to it with the argument list [1, 2].
10930 @@ There is currently no way to retrieve the storage
10931 @@ allocated to FUNCTION (or all of its parms) if we return
10932 @@ something we had previously. */
10935 start_function (declspecs, declarator, attrs, pre_parsed_p)
10936 tree declspecs, declarator, attrs;
10940 tree ctype = NULL_TREE;
10943 extern int have_extern_spec;
10944 extern int used_extern_spec;
10945 int doing_friend = 0;
10947 /* Sanity check. */
10948 my_friendly_assert (TREE_VALUE (void_list_node) == void_type_node, 160);
10949 my_friendly_assert (TREE_CHAIN (void_list_node) == NULL_TREE, 161);
10951 /* Assume, until we see it does. */
10952 current_function_returns_value = 0;
10953 current_function_returns_null = 0;
10954 warn_about_return_type = 0;
10956 shadowed_labels = 0;
10957 current_function_assigns_this = 0;
10958 current_function_just_assigned_this = 0;
10959 current_function_parms_stored = 0;
10960 original_result_rtx = NULL_RTX;
10961 base_init_expr = NULL_TREE;
10962 current_base_init_list = NULL_TREE;
10963 current_member_init_list = NULL_TREE;
10964 ctor_label = dtor_label = NULL_TREE;
10966 clear_temp_name ();
10968 /* This should only be done once on the top most decl. */
10969 if (have_extern_spec && !used_extern_spec)
10971 declspecs = decl_tree_cons (NULL_TREE, get_identifier ("extern"), declspecs);
10972 used_extern_spec = 1;
10977 decl1 = declarator;
10979 if (! DECL_ARGUMENTS (decl1)
10980 && !DECL_STATIC_FUNCTION_P (decl1)
10981 && DECL_CONTEXT (decl1)
10982 && DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl1)))
10983 && IDENTIFIER_TEMPLATE (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl1)))))
10985 cp_error ("redeclaration of `%#D'", decl1);
10986 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)))
10987 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1)));
10988 else if (IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1)))
10989 cp_error_at ("previous declaration here", IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1)));
10992 fntype = TREE_TYPE (decl1);
10993 if (TREE_CODE (fntype) == METHOD_TYPE)
10994 ctype = TYPE_METHOD_BASETYPE (fntype);
10996 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
10997 class is in the (lexical) scope of the class in which it is
10999 if (!ctype && DECL_FRIEND_P (decl1))
11001 ctype = DECL_CLASS_CONTEXT (decl1);
11003 /* CTYPE could be null here if we're dealing with a template;
11004 for example, `inline friend float foo()' inside a template
11005 will have no CTYPE set. */
11006 if (ctype && TREE_CODE (ctype) != RECORD_TYPE)
11012 /* In a fcn definition, arg types must be complete. */
11013 require_complete_types_for_parms (DECL_ARGUMENTS (decl1));
11015 /* In case some arg types were completed since the declaration was
11016 parsed, fix up the decls. */
11018 tree t = DECL_ARGUMENTS (decl1);
11019 for (; t; t = TREE_CHAIN (t))
11020 layout_decl (t, 0);
11023 last_function_parms = DECL_ARGUMENTS (decl1);
11024 last_function_parm_tags = NULL_TREE;
11028 decl1 = grokdeclarator (declarator, declspecs, FUNCDEF, 1, NULL_TREE);
11029 /* If the declarator is not suitable for a function definition,
11030 cause a syntax error. */
11031 if (decl1 == NULL_TREE || TREE_CODE (decl1) != FUNCTION_DECL) return 0;
11033 fntype = TREE_TYPE (decl1);
11035 restype = TREE_TYPE (fntype);
11036 if (IS_AGGR_TYPE (restype) && ! TYPE_PTRMEMFUNC_P (restype)
11037 && ! CLASSTYPE_GOT_SEMICOLON (restype))
11039 cp_error ("semicolon missing after declaration of `%#T'", restype);
11040 shadow_tag (build_tree_list (NULL_TREE, restype));
11041 CLASSTYPE_GOT_SEMICOLON (restype) = 1;
11042 if (TREE_CODE (fntype) == FUNCTION_TYPE)
11043 fntype = build_function_type (integer_type_node,
11044 TYPE_ARG_TYPES (fntype));
11046 fntype = build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype), TREE_READONLY (decl1), TREE_SIDE_EFFECTS (decl1)),
11048 TYPE_ARG_TYPES (fntype));
11049 TREE_TYPE (decl1) = fntype;
11052 if (TREE_CODE (fntype) == METHOD_TYPE)
11053 ctype = TYPE_METHOD_BASETYPE (fntype);
11054 else if (IDENTIFIER_LENGTH (DECL_NAME (decl1)) == 4
11055 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (decl1)), "main")
11056 && DECL_CONTEXT (decl1) == NULL_TREE)
11058 /* If this doesn't return integer_type, complain. */
11059 if (TREE_TYPE (TREE_TYPE (decl1)) != integer_type_node)
11061 if (pedantic || warn_return_type)
11062 pedwarn ("return type for `main' changed to `int'");
11063 TREE_TYPE (decl1) = fntype = default_function_type;
11065 warn_about_return_type = 0;
11069 /* Warn if function was previously implicitly declared
11070 (but not if we warned then). */
11071 if (! warn_implicit
11072 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)) != NULL_TREE)
11073 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1)));
11075 current_function_decl = decl1;
11076 /* Save the parm names or decls from this function's declarator
11077 where store_parm_decls will find them. */
11078 current_function_parms = last_function_parms;
11079 current_function_parm_tags = last_function_parm_tags;
11081 announce_function (decl1);
11083 if (! processing_template_decl)
11085 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype))) == NULL_TREE)
11087 cp_error ("return-type `%#T' is an incomplete type",
11088 TREE_TYPE (fntype));
11090 /* Make it return void instead, but don't change the
11091 type of the DECL_RESULT, in case we have a named return value. */
11094 = build_cplus_method_type (build_type_variant (ctype,
11095 TREE_READONLY (decl1),
11096 TREE_SIDE_EFFECTS (decl1)),
11098 FUNCTION_ARG_CHAIN (decl1));
11101 = build_function_type (void_type_node,
11102 TYPE_ARG_TYPES (TREE_TYPE (decl1)));
11103 DECL_RESULT (decl1)
11104 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype)));
11105 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (TREE_TYPE (fntype));
11106 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (TREE_TYPE (fntype));
11109 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype))
11110 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype)))
11111 abstract_virtuals_error (decl1, TREE_TYPE (fntype));
11114 if (warn_about_return_type)
11115 warning ("return-type defaults to `int'");
11117 /* Make the init_value nonzero so pushdecl knows this is not tentative.
11118 error_mark_node is replaced below (in poplevel) with the BLOCK. */
11119 DECL_INITIAL (decl1) = error_mark_node;
11121 /* This function exists in static storage.
11122 (This does not mean `static' in the C sense!) */
11123 TREE_STATIC (decl1) = 1;
11125 /* Record the decl so that the function name is defined.
11126 If we already have a decl for this name, and it is a FUNCTION_DECL,
11127 use the old decl. */
11129 if (processing_template_decl)
11130 push_template_decl (decl1);
11131 else if (pre_parsed_p == 0)
11133 decl1 = pushdecl (decl1);
11134 DECL_MAIN_VARIANT (decl1) = decl1;
11135 fntype = TREE_TYPE (decl1);
11138 current_function_decl = decl1;
11140 if (DECL_INTERFACE_KNOWN (decl1))
11142 if (DECL_NOT_REALLY_EXTERN (decl1))
11143 DECL_EXTERNAL (decl1) = 0;
11145 /* If this function belongs to an interface, it is public.
11146 If it belongs to someone else's interface, it is also external.
11147 It doesn't matter whether it's inline or not. */
11148 else if (interface_unknown == 0
11149 && (! DECL_TEMPLATE_INSTANTIATION (decl1)
11150 || flag_alt_external_templates))
11152 if (DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1)
11153 || processing_template_decl)
11154 DECL_EXTERNAL (decl1)
11156 || (DECL_THIS_INLINE (decl1) && ! flag_implement_inlines));
11159 DECL_EXTERNAL (decl1) = 0;
11160 if (DECL_C_STATIC (decl1))
11161 TREE_PUBLIC (decl1) = 0;
11163 DECL_NOT_REALLY_EXTERN (decl1) = 0;
11164 DECL_INTERFACE_KNOWN (decl1) = 1;
11168 /* This is a definition, not a reference.
11169 So clear DECL_EXTERNAL. */
11170 DECL_EXTERNAL (decl1) = 0;
11172 if ((DECL_THIS_INLINE (decl1) || DECL_TEMPLATE_INSTANTIATION (decl1))
11173 && ! DECL_INTERFACE_KNOWN (decl1)
11174 /* Don't try to defer nested functions for now. */
11175 && ! hack_decl_function_context (decl1))
11176 DECL_DEFER_OUTPUT (decl1) = 1;
11179 DECL_INTERFACE_KNOWN (decl1) = 1;
11180 if (DECL_C_STATIC (decl1))
11181 TREE_PUBLIC (decl1) = 0;
11185 if (ctype != NULL_TREE && DECL_STATIC_FUNCTION_P (decl1))
11187 if (TREE_CODE (fntype) == METHOD_TYPE)
11188 TREE_TYPE (decl1) = fntype
11189 = build_function_type (TREE_TYPE (fntype),
11190 TREE_CHAIN (TYPE_ARG_TYPES (fntype)));
11191 current_function_parms = TREE_CHAIN (current_function_parms);
11192 DECL_ARGUMENTS (decl1) = current_function_parms;
11195 restype = TREE_TYPE (fntype);
11199 push_nested_class (ctype, 1);
11201 /* If we're compiling a friend function, neither of the variables
11202 current_class_ptr nor current_class_type will have values. */
11203 if (! doing_friend)
11205 /* We know that this was set up by `grokclassfn'.
11206 We do not wait until `store_parm_decls', since evil
11207 parse errors may never get us to that point. Here
11208 we keep the consistency between `current_class_type'
11209 and `current_class_ptr'. */
11210 tree t = current_function_parms;
11212 my_friendly_assert (t != NULL_TREE
11213 && TREE_CODE (t) == PARM_DECL, 162);
11215 if (TREE_CODE (TREE_TYPE (t)) == POINTER_TYPE)
11217 int i = suspend_momentary ();
11219 /* Fool build_indirect_ref. */
11220 current_class_ptr = NULL_TREE;
11221 current_class_ref = build_indirect_ref (t, NULL_PTR);
11222 current_class_ptr = t;
11223 resume_momentary (i);
11226 /* We're having a signature pointer here. */
11227 current_class_ref = current_class_ptr = t;
11233 if (DECL_STATIC_FUNCTION_P (decl1))
11234 push_nested_class (DECL_CONTEXT (decl1), 2);
11236 push_memoized_context (0, 1);
11237 current_class_ptr = current_class_ref = NULL_TREE;
11241 current_binding_level->parm_flag = 1;
11243 GNU_xref_function (decl1, current_function_parms);
11246 cplus_decl_attributes (decl1, NULL_TREE, attrs);
11247 make_function_rtl (decl1);
11249 /* Promote the value to int before returning it. */
11250 if (C_PROMOTING_INTEGER_TYPE_P (restype))
11251 restype = type_promotes_to (restype);
11253 /* If this fcn was already referenced via a block-scope `extern' decl
11254 (or an implicit decl), propagate certain information about the usage. */
11255 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1)))
11256 TREE_ADDRESSABLE (decl1) = 1;
11258 if (DECL_RESULT (decl1) == NULL_TREE)
11260 DECL_RESULT (decl1)
11261 = build_decl (RESULT_DECL, 0, TYPE_MAIN_VARIANT (restype));
11262 TREE_READONLY (DECL_RESULT (decl1)) = TYPE_READONLY (restype);
11263 TREE_THIS_VOLATILE (DECL_RESULT (decl1)) = TYPE_VOLATILE (restype);
11266 /* Allocate further tree nodes temporarily during compilation
11267 of this function only. Tiemann moved up here from bottom of fn. */
11268 temporary_allocation ();
11270 if (processing_template_decl)
11272 extern tree last_tree;
11273 ++minimal_parse_mode;
11274 last_tree = DECL_SAVED_TREE (decl1)
11275 = build_nt (EXPR_STMT, void_zero_node);
11280 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1))
11281 && DECL_LANGUAGE (decl1) == lang_cplusplus)
11283 dtor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11284 ctor_label = NULL_TREE;
11288 dtor_label = NULL_TREE;
11289 if (DECL_CONSTRUCTOR_P (decl1))
11290 ctor_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11297 store_after_parms (insns)
11302 for (x = get_insns (); x; x = next_insn (x))
11304 if (GET_CODE (x) == NOTE && NOTE_LINE_NUMBER (x) == NOTE_INSN_FUNCTION_BEG)
11306 emit_insns_after (insns, x);
11311 /* This doesn't work, because the inline output routine doesn't reset
11312 last_parm_insn correctly for get_first_nonparm_insn () to work. */
11314 last_parm_insn = get_first_nonparm_insn ();
11315 if (last_parm_insn == NULL_RTX)
11316 emit_insns (insns);
11318 emit_insns_before (insns, last_parm_insn);
11323 expand_start_early_try_stmts ()
11327 expand_start_try_stmts ();
11328 insns = get_insns ();
11331 emit_insns_after (insns, get_insns ());
11333 store_after_parms (insns);
11337 /* Store the parameter declarations into the current function declaration.
11338 This is called after parsing the parameter declarations, before
11339 digesting the body of the function.
11341 Also install to binding contour return value identifier, if any. */
11344 store_parm_decls ()
11346 register tree fndecl = current_function_decl;
11347 register tree parm;
11348 int parms_have_cleanups = 0;
11350 /* This is either a chain of PARM_DECLs (when a prototype is used). */
11351 tree specparms = current_function_parms;
11353 /* This is a list of types declared among parms in a prototype. */
11354 tree parmtags = current_function_parm_tags;
11356 /* This is a chain of any other decls that came in among the parm
11357 declarations. If a parm is declared with enum {foo, bar} x;
11358 then CONST_DECLs for foo and bar are put here. */
11359 tree nonparms = NULL_TREE;
11361 if (toplevel_bindings_p ())
11362 fatal ("parse errors have confused me too much");
11364 /* Initialize RTL machinery. */
11365 init_function_start (fndecl, input_filename, lineno);
11367 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
11368 declare_function_name ();
11370 /* Create a binding level for the parms. */
11371 expand_start_bindings (0);
11373 if (specparms != NULL_TREE)
11375 /* This case is when the function was defined with an ANSI prototype.
11376 The parms already have decls, so we need not do anything here
11377 except record them as in effect
11378 and complain if any redundant old-style parm decls were written. */
11380 register tree next;
11382 /* Must clear this because it might contain TYPE_DECLs declared
11384 storedecls (NULL_TREE);
11386 for (parm = nreverse (specparms); parm; parm = next)
11388 next = TREE_CHAIN (parm);
11389 if (TREE_CODE (parm) == PARM_DECL)
11392 if (DECL_NAME (parm) == NULL_TREE)
11396 else if (TYPE_MAIN_VARIANT (TREE_TYPE (parm)) == void_type_node)
11397 cp_error ("parameter `%D' declared void", parm);
11400 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
11401 A parameter is assumed not to have any side effects.
11402 If this should change for any reason, then this
11403 will have to wrap the bashed reference type in a save_expr.
11405 Also, if the parameter type is declared to be an X
11406 and there is an X(X&) constructor, we cannot lay it
11407 into the stack (any more), so we make this parameter
11408 look like it is really of reference type. Functions
11409 which pass parameters to this function will know to
11410 create a temporary in their frame, and pass a reference
11413 if (TREE_CODE (TREE_TYPE (parm)) == REFERENCE_TYPE
11414 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm))))
11415 SET_DECL_REFERENCE_SLOT (parm, convert_from_reference (parm));
11419 if (! processing_template_decl
11420 && (cleanup = maybe_build_cleanup (parm), cleanup))
11422 expand_decl (parm);
11423 if (! expand_decl_cleanup (parm, cleanup))
11424 cp_error ("parser lost in parsing declaration of `%D'",
11426 parms_have_cleanups = 1;
11431 /* If we find an enum constant or a type tag,
11432 put it aside for the moment. */
11433 TREE_CHAIN (parm) = NULL_TREE;
11434 nonparms = chainon (nonparms, parm);
11438 /* Get the decls in their original chain order
11439 and record in the function. This is all and only the
11440 PARM_DECLs that were pushed into scope by the loop above. */
11441 DECL_ARGUMENTS (fndecl) = getdecls ();
11443 storetags (chainon (parmtags, gettags ()));
11446 DECL_ARGUMENTS (fndecl) = NULL_TREE;
11448 /* Now store the final chain of decls for the arguments
11449 as the decl-chain of the current lexical scope.
11450 Put the enumerators in as well, at the front so that
11451 DECL_ARGUMENTS is not modified. */
11453 storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl)));
11455 /* Initialize the RTL code for the function. */
11456 DECL_SAVED_INSNS (fndecl) = NULL_RTX;
11457 if (! processing_template_decl)
11458 expand_function_start (fndecl, parms_have_cleanups);
11460 /* Create a binding contour which can be used to catch
11461 cleanup-generated temporaries. Also, if the return value needs or
11462 has initialization, deal with that now. */
11463 if (parms_have_cleanups)
11466 expand_start_bindings (0);
11469 current_function_parms_stored = 1;
11471 /* If this function is `main', emit a call to `__main'
11472 to run global initializers, etc. */
11473 if (DECL_NAME (fndecl)
11474 && IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4
11475 && strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main") == 0
11476 && DECL_CONTEXT (fndecl) == NULL_TREE)
11478 expand_main_function ();
11481 /* Take care of exception handling things. */
11482 if (! processing_template_decl && flag_exceptions)
11488 /* Mark the start of a stack unwinder if we need one. */
11489 start_eh_unwinder ();
11493 /* Do the starting of the exception specifications, if we have any. */
11494 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl)))
11495 expand_start_eh_spec ();
11498 insns = get_insns ();
11502 store_after_parms (insns);
11504 last_dtor_insn = get_last_insn ();
11507 /* Bind a name and initialization to the return value of
11508 the current function. */
11511 store_return_init (return_id, init)
11512 tree return_id, init;
11514 tree decl = DECL_RESULT (current_function_decl);
11517 /* Give this error as many times as there are occurrences,
11518 so that users can use Emacs compilation buffers to find
11519 and fix all such places. */
11520 pedwarn ("ANSI C++ does not permit named return values");
11522 if (return_id != NULL_TREE)
11524 if (DECL_NAME (decl) == NULL_TREE)
11526 DECL_NAME (decl) = return_id;
11527 DECL_ASSEMBLER_NAME (decl) = return_id;
11530 cp_error ("return identifier `%D' already in place", decl);
11533 /* Can't let this happen for constructors. */
11534 if (DECL_CONSTRUCTOR_P (current_function_decl))
11536 error ("can't redefine default return value for constructors");
11540 /* If we have a named return value, put that in our scope as well. */
11541 if (DECL_NAME (decl) != NULL_TREE)
11543 /* If this named return value comes in a register,
11544 put it in a pseudo-register. */
11545 if (DECL_REGISTER (decl))
11547 original_result_rtx = DECL_RTL (decl);
11548 DECL_RTL (decl) = gen_reg_rtx (DECL_MODE (decl));
11551 /* Let `cp_finish_decl' know that this initializer is ok. */
11552 DECL_INITIAL (decl) = init;
11555 if (minimal_parse_mode)
11556 add_tree (build_min_nt (RETURN_INIT, return_id,
11557 copy_to_permanent (init)));
11559 cp_finish_decl (decl, init, NULL_TREE, 0, LOOKUP_ONLYCONVERTING);
11564 /* Finish up a function declaration and compile that function
11565 all the way to assembler language output. The free the storage
11566 for the function definition.
11568 This is called after parsing the body of the function definition.
11569 LINENO is the current line number.
11571 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
11572 (and expand_end_bindings) must be made to take care of the binding
11573 contour for the base initializers. This is only relevant for
11576 NESTED is nonzero if we were in the middle of compiling another function
11577 when we started on this one. */
11580 finish_function (lineno, call_poplevel, nested)
11585 register tree fndecl = current_function_decl;
11586 tree fntype, ctype = NULL_TREE;
11587 rtx last_parm_insn, insns;
11588 /* Label to use if this function is supposed to return a value. */
11589 tree no_return_label = NULL_TREE;
11590 tree decls = NULL_TREE;
11592 /* When we get some parse errors, we can end up without a
11593 current_function_decl, so cope. */
11594 if (fndecl == NULL_TREE)
11597 if (! nested && function_depth > 1)
11600 fntype = TREE_TYPE (fndecl);
11602 /* TREE_READONLY (fndecl) = 1;
11603 This caused &foo to be of type ptr-to-const-function
11604 which then got a warning when stored in a ptr-to-function variable. */
11606 /* This happens on strange parse errors. */
11607 if (! current_function_parms_stored)
11610 store_parm_decls ();
11613 if (processing_template_decl)
11615 if (DECL_CONSTRUCTOR_P (fndecl) && call_poplevel)
11617 decls = getdecls ();
11618 expand_end_bindings (decls, decls != NULL_TREE, 0);
11619 poplevel (decls != NULL_TREE, 0, 0);
11624 if (write_symbols != NO_DEBUG /*&& TREE_CODE (fntype) != METHOD_TYPE*/)
11626 tree ttype = target_type (fntype);
11629 if (IS_AGGR_TYPE (ttype))
11630 /* Let debugger know it should output info for this type. */
11631 note_debug_info_needed (ttype);
11633 for (parmdecl = DECL_ARGUMENTS (fndecl); parmdecl; parmdecl = TREE_CHAIN (parmdecl))
11635 ttype = target_type (TREE_TYPE (parmdecl));
11636 if (IS_AGGR_TYPE (ttype))
11637 /* Let debugger know it should output info for this type. */
11638 note_debug_info_needed (ttype);
11642 /* Clean house because we will need to reorder insns here. */
11643 do_pending_stack_adjust ();
11647 tree binfo = TYPE_BINFO (current_class_type);
11648 tree cond = integer_one_node;
11650 tree in_charge_node = lookup_name (in_charge_identifier, 0);
11652 int ok_to_optimize_dtor = 0;
11653 int empty_dtor = get_last_insn () == last_dtor_insn;
11655 if (current_function_assigns_this)
11656 cond = build (NE_EXPR, boolean_type_node,
11657 current_class_ptr, integer_zero_node);
11660 int n_baseclasses = CLASSTYPE_N_BASECLASSES (current_class_type);
11662 /* If this destructor is empty, then we don't need to check
11663 whether `this' is NULL in some cases. */
11664 if ((flag_this_is_variable & 1) == 0)
11665 ok_to_optimize_dtor = 1;
11666 else if (empty_dtor)
11667 ok_to_optimize_dtor
11668 = (n_baseclasses == 0
11669 || (n_baseclasses == 1
11670 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type, 0))));
11673 /* These initializations might go inline. Protect
11674 the binding level of the parms. */
11676 expand_start_bindings (0);
11678 if (current_function_assigns_this)
11680 current_function_assigns_this = 0;
11681 current_function_just_assigned_this = 0;
11684 /* Generate the code to call destructor on base class.
11685 If this destructor belongs to a class with virtual
11686 functions, then set the virtual function table
11687 pointer to represent the type of our base class. */
11689 /* This side-effect makes call to `build_delete' generate the
11690 code we have to have at the end of this destructor. */
11691 TYPE_HAS_DESTRUCTOR (current_class_type) = 0;
11693 /* These are two cases where we cannot delegate deletion. */
11694 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)
11695 || TYPE_GETS_REG_DELETE (current_class_type))
11696 exprstmt = build_delete (current_class_type, current_class_ref, integer_zero_node,
11697 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
11699 exprstmt = build_delete (current_class_type, current_class_ref, in_charge_node,
11700 LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR|LOOKUP_NORMAL, 0);
11702 /* If we did not assign to this, then `this' is non-zero at
11703 the end of a destructor. As a special optimization, don't
11704 emit test if this is an empty destructor. If it does nothing,
11705 it does nothing. If it calls a base destructor, the base
11706 destructor will perform the test. */
11708 if (exprstmt != error_mark_node
11709 && (TREE_CODE (exprstmt) != NOP_EXPR
11710 || TREE_OPERAND (exprstmt, 0) != integer_zero_node
11711 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type)))
11713 expand_label (dtor_label);
11714 if (cond != integer_one_node)
11715 expand_start_cond (cond, 0);
11716 if (exprstmt != void_zero_node)
11717 /* Don't call `expand_expr_stmt' if we're not going to do
11718 anything, since -Wall will give a diagnostic. */
11719 expand_expr_stmt (exprstmt);
11721 /* Run destructor on all virtual baseclasses. */
11722 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11724 tree vbases = nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type)));
11725 expand_start_cond (build (BIT_AND_EXPR, integer_type_node,
11726 in_charge_node, integer_two_node), 0);
11729 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases)))
11731 tree ptr = convert_pointer_to_vbase (BINFO_TYPE (vbases), current_class_ptr);
11734 (build_pointer_type (BINFO_TYPE (vbases)),
11735 ptr, integer_zero_node,
11736 (LOOKUP_NONVIRTUAL|LOOKUP_DESTRUCTOR
11737 |LOOKUP_HAS_IN_CHARGE|LOOKUP_NORMAL),
11740 vbases = TREE_CHAIN (vbases);
11742 expand_end_cond ();
11745 do_pending_stack_adjust ();
11746 if (cond != integer_one_node)
11747 expand_end_cond ();
11750 TYPE_HAS_DESTRUCTOR (current_class_type) = 1;
11752 virtual_size = c_sizeof (current_class_type);
11754 /* At the end, call delete if that's what's requested. */
11755 if (TYPE_GETS_REG_DELETE (current_class_type))
11756 /* This NOP_EXPR means we are in a static call context. */
11759 (build_indirect_ref
11760 (build1 (NOP_EXPR, build_pointer_type (current_class_type),
11763 ansi_opname[(int) DELETE_EXPR],
11764 tree_cons (NULL_TREE, current_class_ptr,
11765 build_tree_list (NULL_TREE, virtual_size)),
11766 NULL_TREE, LOOKUP_NORMAL);
11767 else if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11768 exprstmt = build_x_delete (ptr_type_node, current_class_ptr, 0,
11771 exprstmt = NULL_TREE;
11775 cond = build (BIT_AND_EXPR, integer_type_node,
11776 in_charge_node, integer_one_node);
11777 expand_start_cond (cond, 0);
11778 expand_expr_stmt (exprstmt);
11779 expand_end_cond ();
11782 /* End of destructor. */
11783 expand_end_bindings (NULL_TREE, getdecls () != NULL_TREE, 0);
11784 poplevel (2, 0, 0); /* XXX change to 1 */
11786 /* Back to the top of destructor. */
11787 /* Dont execute destructor code if `this' is NULL. */
11791 /* If the dtor is empty, and we know there is not possible way we
11792 could use any vtable entries, before they are possibly set by
11793 a base class dtor, we don't have to setup the vtables, as we
11794 know that any base class dtoring will set up any vtables it
11795 needs. We avoid MI, because one base class dtor can do a
11796 virtual dispatch to an overridden function that would need to
11797 have a non-related vtable set up, we cannot avoid setting up
11798 vtables in that case. We could change this to see if there is
11799 just one vtable. */
11800 if (! empty_dtor || TYPE_USES_COMPLEX_INHERITANCE (current_class_type))
11802 /* Make all virtual function table pointers in non-virtual base
11803 classes point to CURRENT_CLASS_TYPE's virtual function
11805 expand_direct_vtbls_init (binfo, binfo, 1, 0, current_class_ptr);
11807 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type))
11808 expand_indirect_vtbls_init (binfo, current_class_ref, current_class_ptr);
11811 if (! ok_to_optimize_dtor)
11813 cond = build_binary_op (NE_EXPR,
11814 current_class_ptr, integer_zero_node, 1);
11815 expand_start_cond (cond, 0);
11818 insns = get_insns ();
11821 last_parm_insn = get_first_nonparm_insn ();
11822 if (last_parm_insn == NULL_RTX)
11823 last_parm_insn = get_last_insn ();
11825 last_parm_insn = previous_insn (last_parm_insn);
11827 emit_insns_after (insns, last_parm_insn);
11829 if (! ok_to_optimize_dtor)
11830 expand_end_cond ();
11832 else if (current_function_assigns_this)
11834 /* Does not need to call emit_base_init, because
11835 that is done (if needed) just after assignment to this
11838 if (DECL_CONSTRUCTOR_P (current_function_decl))
11840 end_protect_partials ();
11841 expand_label (ctor_label);
11842 ctor_label = NULL_TREE;
11846 decls = getdecls ();
11847 expand_end_bindings (decls, decls != NULL_TREE, 0);
11848 poplevel (decls != NULL_TREE, 0, 0);
11850 c_expand_return (current_class_ptr);
11852 else if (TYPE_MAIN_VARIANT (TREE_TYPE (
11853 DECL_RESULT (current_function_decl))) != void_type_node
11854 && return_label != NULL_RTX)
11855 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11857 current_function_assigns_this = 0;
11858 current_function_just_assigned_this = 0;
11859 base_init_expr = NULL_TREE;
11861 else if (DECL_CONSTRUCTOR_P (fndecl))
11863 tree cond, thenclause;
11864 /* Allow constructor for a type to get a new instance of the object
11865 using `build_new'. */
11866 tree abstract_virtuals = CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type);
11867 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = NULL_TREE;
11869 DECL_RETURNS_FIRST_ARG (fndecl) = 1;
11871 if (flag_this_is_variable > 0)
11873 cond = build_binary_op (EQ_EXPR,
11874 current_class_ptr, integer_zero_node, 1);
11875 thenclause = build_modify_expr (current_class_ptr, NOP_EXPR,
11876 build_new (NULL_TREE, current_class_type, void_type_node, 0));
11879 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type) = abstract_virtuals;
11883 if (flag_this_is_variable > 0)
11885 expand_start_cond (cond, 0);
11886 expand_expr_stmt (thenclause);
11887 expand_end_cond ();
11890 /* Emit insns from `emit_base_init' which sets up virtual
11891 function table pointer(s). */
11892 if (base_init_expr)
11894 expand_expr_stmt (base_init_expr);
11895 base_init_expr = NULL_TREE;
11898 insns = get_insns ();
11901 /* This is where the body of the constructor begins.
11902 If there were no insns in this function body, then the
11903 last_parm_insn is also the last insn.
11905 If optimization is enabled, last_parm_insn may move, so
11906 we don't hold on to it (across emit_base_init). */
11907 last_parm_insn = get_first_nonparm_insn ();
11908 if (last_parm_insn == NULL_RTX)
11909 last_parm_insn = get_last_insn ();
11911 last_parm_insn = previous_insn (last_parm_insn);
11913 emit_insns_after (insns, last_parm_insn);
11915 end_protect_partials ();
11917 /* This is where the body of the constructor ends. */
11918 expand_label (ctor_label);
11919 ctor_label = NULL_TREE;
11923 decls = getdecls ();
11924 expand_end_bindings (decls, decls != NULL_TREE, 0);
11925 poplevel (decls != NULL_TREE, 1, 0);
11928 c_expand_return (current_class_ptr);
11930 current_function_assigns_this = 0;
11931 current_function_just_assigned_this = 0;
11933 else if (IDENTIFIER_LENGTH (DECL_NAME (fndecl)) == 4
11934 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl)), "main")
11935 && DECL_CONTEXT (fndecl) == NULL_TREE)
11937 /* Make it so that `main' always returns 0 by default. */
11939 c_expand_return (integer_one_node);
11941 c_expand_return (integer_zero_node);
11944 else if (return_label != NULL_RTX
11945 && current_function_return_value == NULL_TREE
11946 && ! DECL_NAME (DECL_RESULT (current_function_decl)))
11947 no_return_label = build_decl (LABEL_DECL, NULL_TREE, NULL_TREE);
11949 /* If this function is supposed to return a value, ensure that
11950 we do not fall into the cleanups by mistake. The end of our
11951 function will look like this:
11953 user code (may have return stmt somewhere)
11954 goto no_return_label
11959 NOTE_INSN_FUNCTION_END
11963 If the user omits a return stmt in the USER CODE section, we
11964 will have a control path which reaches NOTE_INSN_FUNCTION_END.
11965 Otherwise, we won't. */
11966 if (no_return_label)
11968 DECL_CONTEXT (no_return_label) = fndecl;
11969 DECL_INITIAL (no_return_label) = error_mark_node;
11970 DECL_SOURCE_FILE (no_return_label) = input_filename;
11971 DECL_SOURCE_LINE (no_return_label) = lineno;
11972 expand_goto (no_return_label);
11977 /* remove the binding contour which is used
11978 to catch cleanup-generated temporaries. */
11979 expand_end_bindings (0, 0, 0);
11980 poplevel (0, 0, 0);
11984 /* Emit label at beginning of cleanup code for parameters. */
11985 emit_label (cleanup_label);
11987 /* Get return value into register if that's where it's supposed to be. */
11988 if (original_result_rtx)
11989 fixup_result_decl (DECL_RESULT (fndecl), original_result_rtx);
11991 /* Finish building code that will trigger warnings if users forget
11992 to make their functions return values. */
11993 if (no_return_label || cleanup_label)
11994 emit_jump (return_label);
11995 if (no_return_label)
11997 /* We don't need to call `expand_*_return' here because we
11998 don't need any cleanups here--this path of code is only
11999 for error checking purposes. */
12000 expand_label (no_return_label);
12003 /* Generate rtl for function exit. */
12004 expand_function_end (input_filename, lineno, 1);
12006 if (flag_exceptions)
12007 expand_exception_blocks ();
12010 /* This must come after expand_function_end because cleanups might
12011 have declarations (from inline functions) that need to go into
12012 this function's blocks. */
12013 if (current_binding_level->parm_flag != 1)
12014 my_friendly_abort (122);
12015 poplevel (1, 0, 1);
12017 /* reset scope for C++: if we were in the scope of a class,
12018 then when we finish this function, we are not longer so.
12019 This cannot be done until we know for sure that no more
12020 class members will ever be referenced in this function
12021 (i.e., calls to destructors). */
12022 if (current_class_name)
12024 ctype = current_class_type;
12025 pop_nested_class (1);
12028 pop_memoized_context (1);
12030 /* Must mark the RESULT_DECL as being in this function. */
12031 DECL_CONTEXT (DECL_RESULT (fndecl)) = fndecl;
12033 /* Obey `register' declarations if `setjmp' is called in this fn. */
12034 if (flag_traditional && current_function_calls_setjmp)
12035 setjmp_protect (DECL_INITIAL (fndecl));
12037 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
12038 to the FUNCTION_DECL node itself. */
12039 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;
12041 if (! processing_template_decl)
12043 /* So we can tell if jump_optimize sets it to 1. */
12046 /* Run the optimizers and output the assembler code for this function. */
12047 rest_of_compilation (fndecl);
12049 if (DECL_SAVED_INSNS (fndecl) && ! TREE_ASM_WRITTEN (fndecl))
12051 /* Set DECL_EXTERNAL so that assemble_external will be called as
12052 necessary. We'll clear it again in finish_file. */
12053 if (! DECL_EXTERNAL (fndecl))
12054 DECL_NOT_REALLY_EXTERN (fndecl) = 1;
12055 DECL_EXTERNAL (fndecl) = 1;
12056 mark_inline_for_output (fndecl);
12059 if (ctype && TREE_ASM_WRITTEN (fndecl))
12060 note_debug_info_needed (ctype);
12062 current_function_returns_null |= can_reach_end;
12064 /* Since we don't normally go through c_expand_return for constructors,
12065 this normally gets the wrong value.
12066 Also, named return values have their return codes emitted after
12067 NOTE_INSN_FUNCTION_END, confusing jump.c. */
12068 if (DECL_CONSTRUCTOR_P (fndecl)
12069 || DECL_NAME (DECL_RESULT (fndecl)) != NULL_TREE)
12070 current_function_returns_null = 0;
12072 if (TREE_THIS_VOLATILE (fndecl) && current_function_returns_null)
12073 cp_warning ("`noreturn' function `%D' does return", fndecl);
12074 else if ((warn_return_type || pedantic)
12075 && current_function_returns_null
12076 && TYPE_MAIN_VARIANT (TREE_TYPE (fntype)) != void_type_node)
12078 /* If this function returns non-void and control can drop through,
12080 cp_pedwarn ("control reaches end of non-void function `%D'", fndecl);
12082 /* With just -W, complain only if function returns both with
12083 and without a value. */
12084 else if (extra_warnings
12085 && current_function_returns_value && current_function_returns_null)
12086 warning ("this function may return with or without a value");
12091 /* Free all the tree nodes making up this function. */
12092 /* Switch back to allocating nodes permanently
12093 until we start another function. */
12094 if (processing_template_decl)
12096 --minimal_parse_mode;
12097 DECL_SAVED_TREE (fndecl) = TREE_CHAIN (DECL_SAVED_TREE (fndecl));
12101 permanent_allocation (1);
12103 if (DECL_SAVED_INSNS (fndecl) == NULL_RTX)
12105 /* Stop pointing to the local nodes about to be freed. */
12106 /* But DECL_INITIAL must remain nonzero so we know this
12107 was an actual function definition. */
12108 DECL_INITIAL (fndecl) = error_mark_node;
12109 /* And we need the arguments for template instantiation. */
12110 if (! processing_template_decl)
12112 if (! DECL_CONSTRUCTOR_P (fndecl)
12113 || !(TYPE_USES_VIRTUAL_BASECLASSES
12114 (TYPE_METHOD_BASETYPE (fntype))))
12115 DECL_ARGUMENTS (fndecl) = NULL_TREE;
12119 if (DECL_STATIC_CONSTRUCTOR (fndecl))
12120 static_ctors = perm_tree_cons (NULL_TREE, fndecl, static_ctors);
12121 if (DECL_STATIC_DESTRUCTOR (fndecl))
12122 static_dtors = perm_tree_cons (NULL_TREE, fndecl, static_dtors);
12126 /* Let the error reporting routines know that we're outside a
12127 function. For a nested function, this value is used in
12128 pop_cp_function_context and then reset via pop_function_context. */
12129 current_function_decl = NULL_TREE;
12132 named_label_uses = NULL;
12133 current_class_ptr = NULL_TREE;
12134 current_class_ref = NULL_TREE;
12137 /* Create the FUNCTION_DECL for a function definition.
12138 LINE1 is the line number that the definition absolutely begins on.
12139 LINE2 is the line number that the name of the function appears on.
12140 DECLSPECS and DECLARATOR are the parts of the declaration;
12141 they describe the return type and the name of the function,
12142 but twisted together in a fashion that parallels the syntax of C.
12144 This function creates a binding context for the function body
12145 as well as setting up the FUNCTION_DECL in current_function_decl.
12147 Returns a FUNCTION_DECL on success.
12149 If the DECLARATOR is not suitable for a function (it defines a datum
12150 instead), we return 0, which tells yyparse to report a parse error.
12152 May return void_type_node indicating that this method is actually
12153 a friend. See grokfield for more details.
12155 Came here with a `.pushlevel' .
12157 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
12158 CHANGES TO CODE IN `grokfield'. */
12161 start_method (declspecs, declarator)
12162 tree declarator, declspecs;
12164 tree fndecl = grokdeclarator (declarator, declspecs, MEMFUNCDEF, 0,
12167 /* Something too ugly to handle. */
12168 if (fndecl == NULL_TREE)
12171 /* Pass friends other than inline friend functions back. */
12172 if (TYPE_MAIN_VARIANT (fndecl) == void_type_node)
12175 if (TREE_CODE (fndecl) != FUNCTION_DECL)
12176 /* Not a function, tell parser to report parse error. */
12179 if (IS_SIGNATURE (current_class_type))
12181 IS_DEFAULT_IMPLEMENTATION (fndecl) = 1;
12182 /* In case we need this info later. */
12183 HAS_DEFAULT_IMPLEMENTATION (current_class_type) = 1;
12186 if (DECL_IN_AGGR_P (fndecl))
12188 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl)) != current_class_type)
12190 if (DECL_CONTEXT (fndecl))
12191 cp_error ("`%D' is already defined in class %s", fndecl,
12192 TYPE_NAME_STRING (DECL_CONTEXT (fndecl)));
12194 return void_type_node;
12197 DECL_THIS_INLINE (fndecl) = 1;
12199 if (flag_default_inline)
12200 DECL_INLINE (fndecl) = 1;
12202 if (processing_template_decl && ! current_function_decl)
12203 push_template_decl (fndecl);
12205 /* We read in the parameters on the maybepermanent_obstack,
12206 but we won't be getting back to them until after we
12207 may have clobbered them. So the call to preserve_data
12208 will keep them safe. */
12211 if (! DECL_FRIEND_P (fndecl))
12213 if (DECL_CHAIN (fndecl) != NULL_TREE)
12215 /* Need a fresh node here so that we don't get circularity
12216 when we link these together. If FNDECL was a friend, then
12217 `pushdecl' does the right thing, which is nothing wrt its
12218 current value of DECL_CHAIN. */
12219 fndecl = copy_node (fndecl);
12221 if (TREE_CHAIN (fndecl))
12223 fndecl = copy_node (fndecl);
12224 TREE_CHAIN (fndecl) = NULL_TREE;
12227 if (DECL_CONSTRUCTOR_P (fndecl))
12229 if (! grok_ctor_properties (current_class_type, fndecl))
12230 return void_type_node;
12232 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl)))
12233 grok_op_properties (fndecl, DECL_VIRTUAL_P (fndecl), 0);
12236 cp_finish_decl (fndecl, NULL_TREE, NULL_TREE, 0, 0);
12238 /* Make a place for the parms */
12240 current_binding_level->parm_flag = 1;
12242 DECL_IN_AGGR_P (fndecl) = 1;
12246 /* Go through the motions of finishing a function definition.
12247 We don't compile this method until after the whole class has
12250 FINISH_METHOD must return something that looks as though it
12251 came from GROKFIELD (since we are defining a method, after all).
12253 This is called after parsing the body of the function definition.
12254 STMTS is the chain of statements that makes up the function body.
12256 DECL is the ..._DECL that `start_method' provided. */
12259 finish_method (decl)
12262 register tree fndecl = decl;
12265 register tree link;
12267 if (TYPE_MAIN_VARIANT (decl) == void_type_node)
12270 old_initial = DECL_INITIAL (fndecl);
12272 /* Undo the level for the parms (from start_method).
12273 This is like poplevel, but it causes nothing to be
12274 saved. Saving information here confuses symbol-table
12275 output routines. Besides, this information will
12276 be correctly output when this method is actually
12279 /* Clear out the meanings of the local variables of this level;
12280 also record in each decl which block it belongs to. */
12282 for (link = current_binding_level->names; link; link = TREE_CHAIN (link))
12284 if (DECL_NAME (link) != NULL_TREE)
12285 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link)) = 0;
12286 my_friendly_assert (TREE_CODE (link) != FUNCTION_DECL, 163);
12287 DECL_CONTEXT (link) = NULL_TREE;
12290 /* Restore all name-meanings of the outer levels
12291 that were shadowed by this level. */
12293 for (link = current_binding_level->shadowed; link; link = TREE_CHAIN (link))
12294 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12295 for (link = current_binding_level->class_shadowed;
12296 link; link = TREE_CHAIN (link))
12297 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12298 for (link = current_binding_level->type_shadowed;
12299 link; link = TREE_CHAIN (link))
12300 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link)) = TREE_VALUE (link);
12302 GNU_xref_end_scope ((HOST_WIDE_INT) current_binding_level,
12303 (HOST_WIDE_INT) current_binding_level->level_chain,
12304 current_binding_level->parm_flag,
12305 current_binding_level->keep);
12307 poplevel (0, 0, 0);
12309 DECL_INITIAL (fndecl) = old_initial;
12311 /* We used to check if the context of FNDECL was different from
12312 current_class_type as another way to get inside here. This didn't work
12313 for String.cc in libg++. */
12314 if (DECL_FRIEND_P (fndecl))
12316 CLASSTYPE_INLINE_FRIENDS (current_class_type)
12317 = tree_cons (NULL_TREE, fndecl, CLASSTYPE_INLINE_FRIENDS (current_class_type));
12318 decl = void_type_node;
12324 /* Called when a new struct TYPE is defined.
12325 If this structure or union completes the type of any previous
12326 variable declaration, lay it out and output its rtl. */
12329 hack_incomplete_structures (type)
12334 if (current_binding_level->incomplete == NULL_TREE)
12337 if (!type) /* Don't do this for class templates. */
12340 for (list = ¤t_binding_level->incomplete; *list; )
12342 tree decl = TREE_VALUE (*list);
12343 if (decl && TREE_TYPE (decl) == type
12344 || (TREE_TYPE (decl)
12345 && TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
12346 && TREE_TYPE (TREE_TYPE (decl)) == type))
12348 int toplevel = toplevel_bindings_p ();
12349 if (TREE_CODE (TREE_TYPE (decl)) == ARRAY_TYPE
12350 && TREE_TYPE (TREE_TYPE (decl)) == type)
12351 layout_type (TREE_TYPE (decl));
12352 layout_decl (decl, 0);
12353 rest_of_decl_compilation (decl, NULL_PTR, toplevel, 0);
12357 expand_decl (decl);
12358 cleanup = maybe_build_cleanup (decl);
12359 expand_decl_init (decl);
12360 if (! expand_decl_cleanup (decl, cleanup))
12361 cp_error ("parser lost in parsing declaration of `%D'",
12364 *list = TREE_CHAIN (*list);
12367 list = &TREE_CHAIN (*list);
12371 /* If DECL is of a type which needs a cleanup, build that cleanup here.
12372 See build_delete for information about AUTO_DELETE.
12374 Don't build these on the momentary obstack; they must live
12375 the life of the binding contour. */
12378 maybe_build_cleanup_1 (decl, auto_delete)
12379 tree decl, auto_delete;
12381 tree type = TREE_TYPE (decl);
12382 if (TYPE_NEEDS_DESTRUCTOR (type))
12384 int temp = 0, flags = LOOKUP_NORMAL|LOOKUP_DESTRUCTOR;
12387 if (TREE_CODE (decl) != PARM_DECL)
12388 temp = suspend_momentary ();
12390 if (TREE_CODE (type) == ARRAY_TYPE)
12394 mark_addressable (decl);
12395 rval = build_unary_op (ADDR_EXPR, decl, 0);
12398 /* Optimize for space over speed here. */
12399 if (! TYPE_USES_VIRTUAL_BASECLASSES (type)
12400 || flag_expensive_optimizations)
12401 flags |= LOOKUP_NONVIRTUAL;
12403 rval = build_delete (TREE_TYPE (rval), rval, auto_delete, flags, 0);
12405 if (TYPE_USES_VIRTUAL_BASECLASSES (type)
12406 && ! TYPE_HAS_DESTRUCTOR (type))
12407 rval = build_compound_expr (tree_cons (NULL_TREE, rval,
12408 build_tree_list (NULL_TREE, build_vbase_delete (type, decl))));
12410 /* Since this is a cleanup, UNSAVE it now. */
12411 rval = unsave_expr (rval);
12413 if (TREE_CODE (decl) != PARM_DECL)
12414 resume_momentary (temp);
12421 /* If DECL is of a type which needs a cleanup, build that cleanup
12422 here. The cleanup does free the storage with a call to delete. */
12425 maybe_build_cleanup_and_delete (decl)
12428 return maybe_build_cleanup_1 (decl, integer_three_node);
12431 /* If DECL is of a type which needs a cleanup, build that cleanup
12432 here. The cleanup does not free the storage with a call a delete. */
12435 maybe_build_cleanup (decl)
12438 return maybe_build_cleanup_1 (decl, integer_two_node);
12441 /* Expand a C++ expression at the statement level.
12442 This is needed to ferret out nodes which have UNKNOWN_TYPE.
12443 The C++ type checker should get all of these out when
12444 expressions are combined with other, type-providing, expressions,
12445 leaving only orphan expressions, such as:
12447 &class::bar; / / takes its address, but does nothing with it. */
12450 cplus_expand_expr_stmt (exp)
12453 extern int temp_slot_level;
12454 extern int target_temp_slot_level;
12455 tree old_cleanups = cleanups_this_call;
12456 int old_temp_level = target_temp_slot_level;
12457 push_temp_slots ();
12458 push_temp_slots ();
12459 target_temp_slot_level = temp_slot_level;
12461 if (processing_template_decl)
12463 add_tree (build_min_nt (EXPR_STMT, exp));
12467 if (TREE_TYPE (exp) == unknown_type_node)
12469 if (TREE_CODE (exp) == ADDR_EXPR || TREE_CODE (exp) == TREE_LIST)
12470 error ("address of overloaded function with no contextual type information");
12471 else if (TREE_CODE (exp) == COMPONENT_REF)
12472 warning ("useless reference to a member function name, did you forget the ()?");
12476 if (TREE_CODE (exp) == FUNCTION_DECL)
12478 cp_warning ("reference, not call, to function `%D'", exp);
12479 warning ("at this point in file");
12483 /* We should do this eventually, but right now this causes regex.o from
12484 libg++ to miscompile, and tString to core dump. */
12485 exp = build1 (CLEANUP_POINT_EXPR, TREE_TYPE (exp), exp);
12487 expand_expr_stmt (break_out_cleanups (exp));
12490 /* Clean up any pending cleanups. This happens when a function call
12491 returns a cleanup-needing value that nobody uses. */
12492 expand_cleanups_to (old_cleanups);
12495 target_temp_slot_level = old_temp_level;
12496 /* There might something left from building the trees. */
12497 if (cleanups_this_call)
12499 expand_cleanups_to (NULL_TREE);
12501 free_temp_slots ();
12504 /* When a stmt has been parsed, this function is called.
12506 Currently, this function only does something within a
12507 constructor's scope: if a stmt has just assigned to this,
12508 and we are in a derived class, we call `emit_base_init'. */
12513 extern struct nesting *cond_stack, *loop_stack, *case_stack;
12516 if (current_function_assigns_this
12517 || ! current_function_just_assigned_this)
12519 if (DECL_CONSTRUCTOR_P (current_function_decl))
12521 /* Constructors must wait until we are out of control
12522 zones before calling base constructors. */
12523 if (cond_stack || loop_stack || case_stack)
12525 expand_expr_stmt (base_init_expr);
12526 check_base_init (current_class_type);
12528 current_function_assigns_this = 1;
12531 /* Change a static member function definition into a FUNCTION_TYPE, instead
12532 of the METHOD_TYPE that we create when it's originally parsed.
12534 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
12535 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
12536 other decls. Either pass the addresses of local variables or NULL. */
12539 revert_static_member_fn (decl, fn, argtypes)
12540 tree *decl, *fn, *argtypes;
12543 tree function = fn ? *fn : TREE_TYPE (*decl);
12544 tree args = argtypes ? *argtypes : TYPE_ARG_TYPES (function);
12546 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args))))
12547 cp_error ("static member function `%#D' declared const", *decl);
12548 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args))))
12549 cp_error ("static member function `%#D' declared volatile", *decl);
12551 args = TREE_CHAIN (args);
12552 tmp = build_function_type (TREE_TYPE (function), args);
12553 tmp = build_type_variant (tmp, TYPE_READONLY (function),
12554 TYPE_VOLATILE (function));
12555 tmp = build_exception_variant (tmp,
12556 TYPE_RAISES_EXCEPTIONS (function));
12557 TREE_TYPE (*decl) = tmp;
12558 if (DECL_ARGUMENTS (*decl))
12559 DECL_ARGUMENTS (*decl) = TREE_CHAIN (DECL_ARGUMENTS (*decl));
12560 DECL_STATIC_FUNCTION_P (*decl) = 1;
12568 id_in_current_class (id)
12571 return !!purpose_member (id, class_binding_level->class_shadowed);
12578 int warn_about_return_type;
12580 int just_assigned_this;
12582 int temp_name_counter;
12584 tree shadowed_labels;
12587 rtx last_dtor_insn;
12588 tree base_init_list;
12589 tree member_init_list;
12590 tree base_init_expr;
12591 tree current_class_ptr;
12592 tree current_class_ref;
12594 struct cp_function *next;
12595 struct binding_level *binding_level;
12600 struct cp_function *cp_function_chain;
12602 extern int temp_name_counter;
12604 /* Save and reinitialize the variables
12605 used during compilation of a C++ function. */
12608 push_cp_function_context (context)
12611 struct cp_function *p
12612 = (struct cp_function *) xmalloc (sizeof (struct cp_function));
12614 push_function_context_to (context);
12616 p->next = cp_function_chain;
12617 cp_function_chain = p;
12619 p->named_labels = named_labels;
12620 p->shadowed_labels = shadowed_labels;
12621 p->returns_value = current_function_returns_value;
12622 p->returns_null = current_function_returns_null;
12623 p->warn_about_return_type = warn_about_return_type;
12624 p->binding_level = current_binding_level;
12625 p->ctor_label = ctor_label;
12626 p->dtor_label = dtor_label;
12627 p->last_dtor_insn = last_dtor_insn;
12628 p->assigns_this = current_function_assigns_this;
12629 p->just_assigned_this = current_function_just_assigned_this;
12630 p->parms_stored = current_function_parms_stored;
12631 p->result_rtx = original_result_rtx;
12632 p->base_init_expr = base_init_expr;
12633 p->temp_name_counter = temp_name_counter;
12634 p->base_init_list = current_base_init_list;
12635 p->member_init_list = current_member_init_list;
12636 p->current_class_ptr = current_class_ptr;
12637 p->current_class_ref = current_class_ref;
12640 /* Restore the variables used during compilation of a C++ function. */
12643 pop_cp_function_context (context)
12646 struct cp_function *p = cp_function_chain;
12649 /* Bring back all the labels that were shadowed. */
12650 for (link = shadowed_labels; link; link = TREE_CHAIN (link))
12651 if (DECL_NAME (TREE_VALUE (link)) != 0)
12652 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link)),
12653 TREE_VALUE (link));
12655 pop_function_context_from (context);
12657 cp_function_chain = p->next;
12659 named_labels = p->named_labels;
12660 shadowed_labels = p->shadowed_labels;
12661 current_function_returns_value = p->returns_value;
12662 current_function_returns_null = p->returns_null;
12663 warn_about_return_type = p->warn_about_return_type;
12664 current_binding_level = p->binding_level;
12665 ctor_label = p->ctor_label;
12666 dtor_label = p->dtor_label;
12667 last_dtor_insn = p->last_dtor_insn;
12668 current_function_assigns_this = p->assigns_this;
12669 current_function_just_assigned_this = p->just_assigned_this;
12670 current_function_parms_stored = p->parms_stored;
12671 original_result_rtx = p->result_rtx;
12672 base_init_expr = p->base_init_expr;
12673 temp_name_counter = p->temp_name_counter;
12674 current_base_init_list = p->base_init_list;
12675 current_member_init_list = p->member_init_list;
12676 current_class_ptr = p->current_class_ptr;
12677 current_class_ref = p->current_class_ref;
12685 return function_depth != 0;
12688 /* FSF LOCAL dje prefix attributes */
12689 /* Split SPECS_ATTRS, a list of declspecs and prefix attributes, into two
12690 lists. SPECS_ATTRS may also be just a typespec (eg: RECORD_TYPE).
12692 The head of the declspec list is stored in DECLSPECS.
12693 The head of the attribute list is stored in PREFIX_ATTRIBUTES.
12695 Note that attributes in SPECS_ATTRS are stored in the TREE_PURPOSE of
12696 the list elements. We drop the containing TREE_LIST nodes and link the
12697 resulting attributes together the way decl_attributes expects them. */
12700 split_specs_attrs (specs_attrs, declspecs, prefix_attributes)
12702 tree *declspecs, *prefix_attributes;
12704 tree t, s, a, next, specs, attrs;
12706 /* This can happen in c++ (eg: decl: typespec initdecls ';'). */
12707 if (specs_attrs != NULL_TREE
12708 && TREE_CODE (specs_attrs) != TREE_LIST)
12710 *declspecs = specs_attrs;
12711 *prefix_attributes = NULL_TREE;
12715 /* Remember to keep the lists in the same order, element-wise. */
12717 specs = s = NULL_TREE;
12718 attrs = a = NULL_TREE;
12719 for (t = specs_attrs; t; t = next)
12721 next = TREE_CHAIN (t);
12722 /* Declspecs have a non-NULL TREE_VALUE. */
12723 if (TREE_VALUE (t) != NULL_TREE)
12725 if (specs == NULL_TREE)
12729 TREE_CHAIN (s) = t;
12735 if (attrs == NULL_TREE)
12736 attrs = a = TREE_PURPOSE (t);
12739 TREE_CHAIN (a) = TREE_PURPOSE (t);
12740 a = TREE_PURPOSE (t);
12745 /* Terminate the lists. */
12746 if (s != NULL_TREE)
12747 TREE_CHAIN (s) = NULL_TREE;
12748 if (a != NULL_TREE)
12749 TREE_CHAIN (a) = NULL_TREE;
12752 *declspecs = specs;
12753 *prefix_attributes = attrs;
12756 /* Strip attributes from SPECS_ATTRS, a list of declspecs and attributes.
12757 This function is used by the parser when a rule will accept attributes
12758 in a particular position, but we don't want to support that just yet.
12760 A warning is issued for every ignored attribute. */
12763 strip_attrs (specs_attrs)
12768 split_specs_attrs (specs_attrs, &specs, &attrs);
12772 warning ("`%s' attribute ignored",
12773 IDENTIFIER_POINTER (TREE_PURPOSE (attrs)));
12774 attrs = TREE_CHAIN (attrs);
12779 /* END FSF LOCAL */