1 /* Process declarations and variables for C compiler.
2 Copyright (C) 1988, 1992, 1993, 1994, 1995 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
22 /* Process declarations and symbol lookup for C front end.
23 Also constructs types; the standard scalar types at initialization,
24 and structure, union, array and enum types when they are declared. */
26 /* ??? not all decl nodes are given the most useful possible
27 line numbers. For example, the CONST_DECLs for enum values. */
37 #include <sys/types.h>
41 #define obstack_chunk_alloc xmalloc
42 #define obstack_chunk_free free
44 extern tree builtin_return_address_fndecl
;
46 extern struct obstack permanent_obstack
;
48 extern int current_class_depth
;
50 extern tree cleanups_this_call
;
52 extern tree static_ctors
, static_dtors
;
54 /* Stack of places to restore the search obstack back to. */
56 /* Obstack used for remembering local class declarations (like
57 enums and static (const) members. */
59 static struct obstack decl_obstack
;
60 static struct stack_level
*decl_stack
;
62 #ifndef CHAR_TYPE_SIZE
63 #define CHAR_TYPE_SIZE BITS_PER_UNIT
66 #ifndef SHORT_TYPE_SIZE
67 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
71 #define INT_TYPE_SIZE BITS_PER_WORD
74 #ifndef LONG_TYPE_SIZE
75 #define LONG_TYPE_SIZE BITS_PER_WORD
78 #ifndef LONG_LONG_TYPE_SIZE
79 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
82 #ifndef WCHAR_UNSIGNED
83 #define WCHAR_UNSIGNED 0
86 #ifndef FLOAT_TYPE_SIZE
87 #define FLOAT_TYPE_SIZE BITS_PER_WORD
90 #ifndef DOUBLE_TYPE_SIZE
91 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
94 #ifndef LONG_DOUBLE_TYPE_SIZE
95 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
98 #ifndef BOOL_TYPE_SIZE
99 #ifdef SLOW_BYTE_ACCESS
100 #define BOOL_TYPE_SIZE BITS_PER_WORD
102 #define BOOL_TYPE_SIZE BITS_PER_UNIT
106 /* We let tm.h override the types used here, to handle trivial differences
107 such as the choice of unsigned int or long unsigned int for size_t.
108 When machines start needing nontrivial differences in the size type,
109 it would be best to do something here to figure out automatically
110 from other information what type to use. */
113 #define SIZE_TYPE "long unsigned int"
117 #define PTRDIFF_TYPE "long int"
121 #define WCHAR_TYPE "int"
124 static tree grokparms
PROTO((tree
, int));
125 static tree lookup_nested_type
PROTO((tree
, tree
));
126 static char *redeclaration_error_message
PROTO((tree
, tree
));
127 static void grok_op_properties
PROTO((tree
, int, int));
130 PROTO((char *, tree
, enum built_in_function
, void (*)(), char *));
132 /* a node which has tree code ERROR_MARK, and whose type is itself.
133 All erroneous expressions are replaced with this node. All functions
134 that accept nodes as arguments should avoid generating error messages
135 if this node is one of the arguments, since it is undesirable to get
136 multiple error messages from one error in the input. */
138 tree error_mark_node
;
140 /* Erroneous argument lists can use this *IFF* they do not modify it. */
141 tree error_mark_list
;
143 /* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */
145 tree short_integer_type_node
;
146 tree integer_type_node
;
147 tree long_integer_type_node
;
148 tree long_long_integer_type_node
;
150 tree short_unsigned_type_node
;
151 tree unsigned_type_node
;
152 tree long_unsigned_type_node
;
153 tree long_long_unsigned_type_node
;
155 tree ptrdiff_type_node
;
157 tree unsigned_char_type_node
;
158 tree signed_char_type_node
;
160 tree wchar_type_node
;
161 tree signed_wchar_type_node
;
162 tree unsigned_wchar_type_node
;
164 tree wchar_decl_node
;
166 tree float_type_node
;
167 tree double_type_node
;
168 tree long_double_type_node
;
170 tree intQI_type_node
;
171 tree intHI_type_node
;
172 tree intSI_type_node
;
173 tree intDI_type_node
;
175 tree unsigned_intQI_type_node
;
176 tree unsigned_intHI_type_node
;
177 tree unsigned_intSI_type_node
;
178 tree unsigned_intDI_type_node
;
180 /* a VOID_TYPE node, and the same, packaged in a TREE_LIST. */
182 tree void_type_node
, void_list_node
;
185 /* Nodes for types `void *' and `const void *'. */
187 tree ptr_type_node
, const_ptr_type_node
;
189 /* Nodes for types `char *' and `const char *'. */
191 tree string_type_node
, const_string_type_node
;
193 /* Type `char[256]' or something like it.
194 Used when an array of char is needed and the size is irrelevant. */
196 tree char_array_type_node
;
198 /* Type `int[256]' or something like it.
199 Used when an array of int needed and the size is irrelevant. */
201 tree int_array_type_node
;
203 /* Type `wchar_t[256]' or something like it.
204 Used when a wide string literal is created. */
206 tree wchar_array_type_node
;
208 /* The bool data type, and constants */
209 tree boolean_type_node
, boolean_true_node
, boolean_false_node
;
211 /* type `int ()' -- used for implicit declaration of functions. */
213 tree default_function_type
;
215 /* function types `double (double)' and `double (double, double)', etc. */
217 tree double_ftype_double
, double_ftype_double_double
;
218 tree int_ftype_int
, long_ftype_long
;
220 /* Function type `void (void *, void *, int)' and similar ones. */
222 tree void_ftype_ptr_ptr_int
, int_ftype_ptr_ptr_int
, void_ftype_ptr_int_int
;
224 /* Function type `char *(char *, char *)' and similar ones */
225 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
227 /* Function type `size_t (const char *)' */
228 tree sizet_ftype_string
;
230 /* Function type `int (const void *, const void *, size_t)' */
231 tree int_ftype_cptr_cptr_sizet
;
234 tree vtable_entry_type
;
235 tree delta_type_node
;
237 /* Old rtti stuff. */
238 tree __baselist_desc_type_node
;
239 tree __i_desc_type_node
, __m_desc_type_node
;
240 tree __t_desc_array_type
, __i_desc_array_type
, __m_desc_array_type
;
242 tree __t_desc_type_node
, __tp_desc_type_node
;
243 tree __access_mode_type_node
;
244 tree __bltn_desc_type_node
, __user_desc_type_node
, __class_desc_type_node
;
245 tree __ptr_desc_type_node
, __attr_desc_type_node
, __func_desc_type_node
;
246 tree __ptmf_desc_type_node
, __ptmd_desc_type_node
;
248 /* Not needed yet? May be needed one day? */
249 tree __bltn_desc_array_type
, __user_desc_array_type
, __class_desc_array_type
;
250 tree __ptr_desc_array_type
, __attr_dec_array_type
, __func_desc_array_type
;
251 tree __ptmf_desc_array_type
, __ptmd_desc_array_type
;
254 tree class_star_type_node
;
255 tree class_type_node
, record_type_node
, union_type_node
, enum_type_node
;
256 tree unknown_type_node
;
257 tree opaque_type_node
, signature_type_node
;
258 tree sigtable_entry_type
;
259 tree maybe_gc_cleanup
;
261 /* Array type `vtable_entry_type[]' */
264 /* In a destructor, the point at which all derived class destroying
265 has been done, just before any base class destroying will be done. */
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 /* Used in pointer to member functions, and in vtables. */
296 tree pfn_identifier
, index_identifier
, delta_identifier
, delta2_identifier
;
297 tree pfn_or_delta2_identifier
;
299 /* A list (chain of TREE_LIST nodes) of named label uses.
300 The TREE_PURPOSE field is the list of variables defined
301 the the label's scope defined at the point of use.
302 The TREE_VALUE field is the LABEL_DECL used.
303 The TREE_TYPE field holds `current_binding_level' at the
304 point of the label's use.
306 Used only for jumps to as-yet undefined labels, since
307 jumps to defined labels can have their validity checked
310 static tree named_label_uses
;
312 /* A list of objects which have constructors or destructors
313 which reside in the global scope. The decl is stored in
314 the TREE_VALUE slot and the initializer is stored
315 in the TREE_PURPOSE slot. */
316 tree static_aggregates
;
320 /* Two expressions that are constants with value zero.
321 The first is of type `int', the second of type `void *'. */
323 tree integer_zero_node
;
324 tree null_pointer_node
;
326 /* A node for the integer constants 1, 2, and 3. */
328 tree integer_one_node
, integer_two_node
, integer_three_node
;
330 /* Nonzero if we have seen an invalid cross reference
331 to a struct, union, or enum, but not yet printed the message. */
333 tree pending_invalid_xref
;
334 /* File and line to appear in the eventual error message. */
335 char *pending_invalid_xref_file
;
336 int pending_invalid_xref_line
;
338 /* While defining an enum type, this is 1 plus the last enumerator
341 static tree enum_next_value
;
343 /* Nonzero means that there was overflow computing enum_next_value. */
345 static int enum_overflow
;
347 /* Parsing a function declarator leaves a list of parameter names
348 or a chain or parameter decls here. */
350 tree last_function_parms
;
352 /* Parsing a function declarator leaves here a chain of structure
353 and enum types declared in the parmlist. */
355 static tree last_function_parm_tags
;
357 /* After parsing the declarator that starts a function definition,
358 `start_function' puts here the list of parameter names or chain of decls.
359 `store_parm_decls' finds it here. */
361 static tree current_function_parms
;
363 /* Similar, for last_function_parm_tags. */
364 static tree current_function_parm_tags
;
366 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
367 that have names. Here so we can clear out their names' definitions
368 at the end of the function. */
370 static tree named_labels
;
372 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
374 static tree shadowed_labels
;
376 #if 0 /* Not needed by C++ */
377 /* Nonzero when store_parm_decls is called indicates a varargs function.
378 Value not meaningful after store_parm_decls. */
380 static int c_function_varargs
;
383 /* The FUNCTION_DECL for the function currently being compiled,
384 or 0 if between functions. */
385 tree current_function_decl
;
387 /* Set to 0 at beginning of a function definition, set to 1 if
388 a return statement that specifies a return value is seen. */
390 int current_function_returns_value
;
392 /* Set to 0 at beginning of a function definition, set to 1 if
393 a return statement with no argument is seen. */
395 int current_function_returns_null
;
397 /* Set to 0 at beginning of a function definition, and whenever
398 a label (case or named) is defined. Set to value of expression
399 returned from function when that value can be transformed into
400 a named return value. */
402 tree current_function_return_value
;
404 /* Set to nonzero by `grokdeclarator' for a function
405 whose return type is defaulted, if warnings for this are desired. */
407 static int warn_about_return_type
;
409 /* Nonzero means give `double' the same size as `float'. */
411 extern int flag_short_double
;
413 /* Nonzero means don't recognize any builtin functions. */
415 extern int flag_no_builtin
;
417 /* Nonzero means don't recognize the non-ANSI builtin functions.
420 extern int flag_no_nonansi_builtin
;
422 /* Nonzero means enable obscure ANSI features and disable GNU extensions
423 that might cause ANSI-compliant code to be miscompiled. */
425 extern int flag_ansi
;
427 /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes)
429 extern int flag_huge_objects
;
431 /* Nonzero if we want to conserve space in the .o files. We do this
432 by putting uninitialized data and runtime initialized data into
433 .common instead of .data at the expense of not flagging multiple
435 extern int flag_conserve_space
;
437 /* Pointers to the base and current top of the language name stack. */
439 extern tree
*current_lang_base
, *current_lang_stack
;
441 /* C and C++ flags are in decl2.c. */
443 /* Set to 0 at beginning of a constructor, set to 1
444 if that function does an allocation before referencing its
445 instance variable. */
446 int current_function_assigns_this
;
447 int current_function_just_assigned_this
;
449 /* Set to 0 at beginning of a function. Set non-zero when
450 store_parm_decls is called. Don't call store_parm_decls
451 if this flag is non-zero! */
452 int current_function_parms_stored
;
454 /* Current end of entries in the gc obstack for stack pointer variables. */
456 int current_function_obstack_index
;
458 /* Flag saying whether we have used the obstack in this function or not. */
460 int current_function_obstack_usage
;
462 /* Flag used when debugging spew.c */
464 extern int spew_debug
;
466 /* This is a copy of the class_shadowed list of the previous class binding
467 contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs
468 when entering another class scope (i.e. a cache miss). */
469 extern tree previous_class_values
;
472 /* Allocate a level of searching. */
474 push_decl_level (stack
, obstack
)
475 struct stack_level
*stack
;
476 struct obstack
*obstack
;
478 struct stack_level tem
;
481 return push_stack_level (obstack
, (char *)&tem
, sizeof (tem
));
484 /* For each binding contour we allocate a binding_level structure
485 * which records the names defined in that contour.
488 * 1) one for each function definition,
489 * where internal declarations of the parameters appear.
490 * 2) one for each compound statement,
491 * to record its declarations.
493 * The current meaning of a name can be found by searching the levels from
494 * the current one out to the global one.
496 * Off to the side, may be the class_binding_level. This exists
497 * only to catch class-local declarations. It is otherwise
500 * Also there may be binding levels that catch cleanups that
501 * must be run when exceptions occur.
504 /* Note that the information in the `names' component of the global contour
505 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
509 /* A chain of _DECL nodes for all variables, constants, functions,
510 * and typedef types. These are in the reverse of the order supplied.
514 /* A list of structure, union and enum definitions,
515 * for looking up tag names.
516 * It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
517 * or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
518 * or ENUMERAL_TYPE node.
520 * C++: the TREE_VALUE nodes can be simple types for component_bindings.
525 /* For each level, a list of shadowed outer-level local definitions
526 to be restored when this level is popped.
527 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
528 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
531 /* Same, for IDENTIFIER_CLASS_VALUE. */
534 /* Same, for IDENTIFIER_TYPE_VALUE. */
537 /* For each level (except not the global one),
538 a chain of BLOCK nodes for all the levels
539 that were entered and exited one level down. */
542 /* The BLOCK node for this level, if one has been preallocated.
543 If 0, the BLOCK is allocated (if needed) when the level is popped. */
546 /* The binding level which this one is contained in (inherits from). */
547 struct binding_level
*level_chain
;
549 /* Number of decls in `names' that have incomplete
550 structure or union types. */
551 unsigned int n_incomplete
;
553 /* 1 for the level that holds the parameters of a function.
554 2 for the level that holds a class declaration.
555 3 for levels that hold parameter declarations. */
556 unsigned parm_flag
: 4;
558 /* 1 means make a BLOCK for this level regardless of all else.
559 2 for temporary binding contours created by the compiler. */
562 /* Nonzero if this level "doesn't exist" for tags. */
563 unsigned tag_transparent
: 1;
565 /* Nonzero if this level can safely have additional
566 cleanup-needing variables added to it. */
567 unsigned more_cleanups_ok
: 1;
568 unsigned have_cleanups
: 1;
570 /* Nonzero if we should accept any name as an identifier in
571 this scope. This happens in some template definitions. */
572 unsigned accept_any
: 1;
574 /* Nonzero if this level is for completing a template class definition
575 inside a binding level that temporarily binds the parameters. This
576 means that definitions here should not be popped off when unwinding
577 this binding level. (Not actually implemented this way,
579 unsigned pseudo_global
: 1;
581 /* This is set for a namespace binding level. */
582 unsigned namespace_p
: 1;
584 /* One bit left for this word. */
586 #if defined(DEBUG_CP_BINDING_LEVELS)
587 /* Binding depth at which this level began. */
588 unsigned binding_depth
;
589 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
592 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
594 /* The (non-class) binding level currently in effect. */
596 static struct binding_level
*current_binding_level
;
598 /* The binding level of the current class, if any. */
600 static struct binding_level
*class_binding_level
;
602 /* The current (class or non-class) binding level currently in effect. */
604 #define inner_binding_level \
605 (class_binding_level ? class_binding_level : current_binding_level)
607 /* A chain of binding_level structures awaiting reuse. */
609 static struct binding_level
*free_binding_level
;
611 /* The outermost binding level, for names of file scope.
612 This is created when the compiler is started and exists
613 through the entire run. */
615 static struct binding_level
*global_binding_level
;
617 /* Binding level structures are initialized by copying this one. */
619 static struct binding_level clear_binding_level
;
621 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
623 static int keep_next_level_flag
;
625 #if defined(DEBUG_CP_BINDING_LEVELS)
626 static int binding_depth
= 0;
627 static int is_class_level
= 0;
634 for (i
= 0; i
< binding_depth
*2; i
++)
637 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
639 static tree pushdecl_with_scope
PROTO((tree
, struct binding_level
*));
642 push_binding_level (newlevel
, tag_transparent
, keep
)
643 struct binding_level
*newlevel
;
644 int tag_transparent
, keep
;
646 /* Add this level to the front of the chain (stack) of levels that
648 *newlevel
= clear_binding_level
;
649 if (class_binding_level
)
651 newlevel
->level_chain
= class_binding_level
;
652 class_binding_level
= (struct binding_level
*)0;
656 newlevel
->level_chain
= current_binding_level
;
658 current_binding_level
= newlevel
;
659 newlevel
->tag_transparent
= tag_transparent
;
660 newlevel
->more_cleanups_ok
= 1;
661 newlevel
->keep
= keep
;
662 #if defined(DEBUG_CP_BINDING_LEVELS)
663 newlevel
->binding_depth
= binding_depth
;
665 fprintf (stderr
, "push %s level 0x%08x line %d\n",
666 (is_class_level
) ? "class" : "block", newlevel
, lineno
);
669 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
675 if (class_binding_level
)
676 current_binding_level
= class_binding_level
;
678 if (global_binding_level
)
680 /* cannot pop a level, if there are none left to pop. */
681 if (current_binding_level
== global_binding_level
)
682 my_friendly_abort (123);
684 /* Pop the current level, and free the structure for reuse. */
685 #if defined(DEBUG_CP_BINDING_LEVELS)
688 fprintf (stderr
, "pop %s level 0x%08x line %d\n",
689 (is_class_level
) ? "class" : "block",
690 current_binding_level
, lineno
);
691 if (is_class_level
!= (current_binding_level
== class_binding_level
))
692 #if 0 /* XXX Don't abort when we're watching how things are being managed. */
697 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
701 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
703 register struct binding_level
*level
= current_binding_level
;
704 current_binding_level
= current_binding_level
->level_chain
;
705 level
->level_chain
= free_binding_level
;
706 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
707 if (level
->binding_depth
!= binding_depth
)
709 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
710 free_binding_level
= level
;
712 class_binding_level
= current_binding_level
;
713 if (class_binding_level
->parm_flag
!= 2)
714 class_binding_level
= 0;
715 while (current_binding_level
->parm_flag
== 2)
716 current_binding_level
= current_binding_level
->level_chain
;
721 suspend_binding_level ()
723 if (class_binding_level
)
724 current_binding_level
= class_binding_level
;
726 if (global_binding_level
)
728 /* cannot suspend a level, if there are none left to suspend. */
729 if (current_binding_level
== global_binding_level
)
730 my_friendly_abort (123);
732 /* Suspend the current level. */
733 #if defined(DEBUG_CP_BINDING_LEVELS)
736 fprintf (stderr
, "suspend %s level 0x%08x line %d\n",
737 (is_class_level
) ? "class" : "block",
738 current_binding_level
, lineno
);
739 if (is_class_level
!= (current_binding_level
== class_binding_level
))
740 #if 0 /* XXX Don't abort when we're watching how things are being managed. */
745 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
749 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
751 register struct binding_level
*level
= current_binding_level
;
752 current_binding_level
= current_binding_level
->level_chain
;
753 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
754 if (level
->binding_depth
!= binding_depth
)
756 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
758 class_binding_level
= current_binding_level
;
759 if (class_binding_level
->parm_flag
!= 2)
760 class_binding_level
= 0;
761 while (current_binding_level
->parm_flag
== 2)
762 current_binding_level
= current_binding_level
->level_chain
;
767 resume_binding_level (b
)
768 struct binding_level
*b
;
770 if (class_binding_level
)
773 /* These are here because we cannot deal with shadows yet. */
774 sorry ("cannot resume a namespace inside class");
777 b
->level_chain
= class_binding_level
;
778 class_binding_level
= (struct binding_level
*)0;
784 /* These are here because we cannot deal with shadows yet. */
785 if (b
->level_chain
!= current_binding_level
)
787 sorry ("cannot resume a namespace inside a different namespace");
791 b
->level_chain
= current_binding_level
;
793 current_binding_level
= b
;
794 #if defined(DEBUG_CP_BINDING_LEVELS)
795 b
->binding_depth
= binding_depth
;
797 fprintf (stderr
, "resume %s level 0x%08x line %d\n",
798 (is_class_level
) ? "class" : "block", b
, lineno
);
801 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
804 /* Nonzero if we are currently in the global binding level. */
809 return current_binding_level
== global_binding_level
;
812 /* Nonzero if we are currently in a toplevel binding level. This
813 means either the global binding level or a namespace in a toplevel
817 toplevel_bindings_p ()
819 struct binding_level
*b
= current_binding_level
;
823 if (b
== global_binding_level
)
825 if (! b
->namespace_p
)
831 /* Nonzero if this is a namespace scope. */
834 namespace_bindings_p ()
836 return current_binding_level
->namespace_p
;
842 keep_next_level_flag
= 1;
845 /* Nonzero if the current level needs to have a BLOCK made. */
850 return (current_binding_level
->blocks
!= NULL_TREE
851 || current_binding_level
->keep
852 || current_binding_level
->names
!= NULL_TREE
853 || (current_binding_level
->tags
!= NULL_TREE
854 && !current_binding_level
->tag_transparent
));
857 /* Identify this binding level as a level of parameters. */
860 declare_parm_level ()
862 current_binding_level
->parm_flag
= 1;
866 declare_uninstantiated_type_level ()
868 current_binding_level
->accept_any
= 1;
872 uninstantiated_type_level_p ()
874 return current_binding_level
->accept_any
;
878 declare_pseudo_global_level ()
880 current_binding_level
->pseudo_global
= 1;
884 declare_namespace_level ()
886 current_binding_level
->namespace_p
= 1;
890 pseudo_global_level_p ()
892 return current_binding_level
->pseudo_global
;
896 set_class_shadows (shadows
)
899 class_binding_level
->class_shadowed
= shadows
;
902 /* Enter a new binding level.
903 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
904 not for that of tags. */
907 pushlevel (tag_transparent
)
910 register struct binding_level
*newlevel
= NULL_BINDING_LEVEL
;
912 /* If this is the top level of a function,
913 just make sure that NAMED_LABELS is 0.
914 They should have been set to 0 at the end of the previous function. */
916 if (current_binding_level
== global_binding_level
)
917 my_friendly_assert (named_labels
== NULL_TREE
, 134);
919 /* Reuse or create a struct for this binding level. */
921 #if defined(DEBUG_CP_BINDING_LEVELS)
923 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
924 if (free_binding_level
)
925 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
927 newlevel
= free_binding_level
;
928 free_binding_level
= free_binding_level
->level_chain
;
932 /* Create a new `struct binding_level'. */
933 newlevel
= (struct binding_level
*) xmalloc (sizeof (struct binding_level
));
935 push_binding_level (newlevel
, tag_transparent
, keep_next_level_flag
);
936 GNU_xref_start_scope ((HOST_WIDE_INT
) newlevel
);
937 keep_next_level_flag
= 0;
941 pushlevel_temporary (tag_transparent
)
944 pushlevel (tag_transparent
);
945 current_binding_level
->keep
= 2;
948 /* Note we don't call push_momentary() here. Otherwise, it would cause
949 cleanups to be allocated on the momentary obstack, and they will be
950 overwritten by the next statement. */
952 expand_start_bindings (0);
955 /* Exit a binding level.
956 Pop the level off, and restore the state of the identifier-decl mappings
957 that were in effect when this level was entered.
959 If KEEP == 1, this level had explicit declarations, so
960 and create a "block" (a BLOCK node) for the level
961 to record its declarations and subblocks for symbol table output.
963 If KEEP == 2, this level's subblocks go to the front,
964 not the back of the current binding level. This happens,
965 for instance, when code for constructors and destructors
966 need to generate code at the end of a function which must
967 be moved up to the front of the function.
969 If FUNCTIONBODY is nonzero, this level is the body of a function,
970 so create a block as if KEEP were set and also clear out all
973 If REVERSE is nonzero, reverse the order of decls before putting
974 them into the BLOCK. */
977 poplevel (keep
, reverse
, functionbody
)
983 /* The chain of decls was accumulated in reverse order.
984 Put it into forward order, just for cleanliness. */
986 int tmp
= functionbody
;
987 int implicit_try_block
= current_binding_level
->parm_flag
== 3;
988 int real_functionbody
= current_binding_level
->keep
== 2
989 ? ((functionbody
= 0), tmp
) : functionbody
;
990 tree tags
= functionbody
>= 0 ? current_binding_level
->tags
: 0;
991 tree subblocks
= functionbody
>= 0 ? current_binding_level
->blocks
: 0;
992 tree block
= NULL_TREE
;
994 int block_previously_created
;
996 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
997 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
998 current_binding_level
->parm_flag
,
999 current_binding_level
->keep
,
1000 current_binding_level
->tag_transparent
);
1002 if (current_binding_level
->keep
== 1)
1005 /* This warning is turned off because it causes warnings for
1006 declarations like `extern struct foo *x'. */
1008 /* Warn about incomplete structure types in this level. */
1009 for (link
= tags
; link
; link
= TREE_CHAIN (link
))
1010 if (TYPE_SIZE (TREE_VALUE (link
)) == NULL_TREE
)
1012 tree type
= TREE_VALUE (link
);
1014 switch (TREE_CODE (type
))
1017 errmsg
= "`struct %s' incomplete in scope ending here";
1020 errmsg
= "`union %s' incomplete in scope ending here";
1023 errmsg
= "`enum %s' incomplete in scope ending here";
1026 if (TREE_CODE (TYPE_NAME (type
)) == IDENTIFIER_NODE
)
1027 error (errmsg
, IDENTIFIER_POINTER (TYPE_NAME (type
)));
1029 /* If this type has a typedef-name, the TYPE_NAME is a TYPE_DECL. */
1030 error (errmsg
, TYPE_NAME_STRING (type
));
1034 /* Get the decls in the order they were written.
1035 Usually current_binding_level->names is in reverse order.
1036 But parameter decls were previously put in forward order. */
1039 current_binding_level
->names
1040 = decls
= nreverse (current_binding_level
->names
);
1042 decls
= current_binding_level
->names
;
1044 /* Output any nested inline functions within this block
1045 if they weren't already output. */
1047 for (decl
= decls
; decl
; decl
= TREE_CHAIN (decl
))
1048 if (TREE_CODE (decl
) == FUNCTION_DECL
1049 && ! TREE_ASM_WRITTEN (decl
)
1050 && DECL_INITIAL (decl
) != NULL_TREE
1051 && TREE_ADDRESSABLE (decl
)
1052 && decl_function_context (decl
) == current_function_decl
)
1054 /* If this decl was copied from a file-scope decl
1055 on account of a block-scope extern decl,
1056 propagate TREE_ADDRESSABLE to the file-scope decl. */
1057 if (DECL_ABSTRACT_ORIGIN (decl
) != NULL_TREE
)
1058 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl
)) = 1;
1061 push_function_context ();
1062 output_inline_function (decl
);
1063 pop_function_context ();
1067 /* If there were any declarations or structure tags in that level,
1068 or if this level is a function body,
1069 create a BLOCK to record them for the life of this function. */
1072 block_previously_created
= (current_binding_level
->this_block
!= NULL_TREE
);
1073 if (block_previously_created
)
1074 block
= current_binding_level
->this_block
;
1075 else if (keep
== 1 || functionbody
)
1076 block
= make_node (BLOCK
);
1077 if (block
!= NULL_TREE
)
1079 BLOCK_VARS (block
) = decls
;
1080 BLOCK_TYPE_TAGS (block
) = tags
;
1081 BLOCK_SUBBLOCKS (block
) = subblocks
;
1082 /* If we created the block earlier on, and we are just diddling it now,
1083 then it already should have a proper BLOCK_END_NOTE value associated
1084 with it, so avoid trashing that. Otherwise, for a new block, install
1085 a new BLOCK_END_NOTE value. */
1086 if (! block_previously_created
)
1087 remember_end_note (block
);
1090 /* In each subblock, record that this is its superior. */
1093 for (link
= subblocks
; link
; link
= TREE_CHAIN (link
))
1094 BLOCK_SUPERCONTEXT (link
) = block
;
1096 /* Clear out the meanings of the local variables of this level. */
1098 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1100 if (DECL_NAME (link
) != NULL_TREE
)
1102 /* If the ident. was used or addressed via a local extern decl,
1103 don't forget that fact. */
1104 if (DECL_EXTERNAL (link
))
1106 if (TREE_USED (link
))
1107 TREE_USED (DECL_ASSEMBLER_NAME (link
)) = 1;
1108 if (TREE_ADDRESSABLE (link
))
1109 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link
)) = 1;
1111 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1115 /* Restore all name-meanings of the outer levels
1116 that were shadowed by this level. */
1118 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
1119 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1120 for (link
= current_binding_level
->class_shadowed
;
1121 link
; link
= TREE_CHAIN (link
))
1122 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1123 for (link
= current_binding_level
->type_shadowed
;
1124 link
; link
= TREE_CHAIN (link
))
1125 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1127 /* If the level being exited is the top level of a function,
1128 check over all the labels. */
1132 /* If this is the top level block of a function,
1133 the vars are the function's parameters.
1134 Don't leave them in the BLOCK because they are
1135 found in the FUNCTION_DECL instead. */
1137 BLOCK_VARS (block
) = 0;
1139 /* Clear out the definitions of all label names,
1140 since their scopes end here. */
1142 for (link
= named_labels
; link
; link
= TREE_CHAIN (link
))
1144 register tree label
= TREE_VALUE (link
);
1146 if (DECL_INITIAL (label
) == NULL_TREE
)
1148 cp_error_at ("label `%D' used but not defined", label
);
1149 /* Avoid crashing later. */
1150 define_label (input_filename
, 1, DECL_NAME (label
));
1152 else if (warn_unused
&& !TREE_USED (label
))
1153 cp_warning_at ("label `%D' defined but not used", label
);
1154 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label
), NULL_TREE
);
1156 /* Put the labels into the "variables" of the
1157 top-level block, so debugger can see them. */
1158 TREE_CHAIN (label
) = BLOCK_VARS (block
);
1159 BLOCK_VARS (block
) = label
;
1162 named_labels
= NULL_TREE
;
1165 /* Any uses of undefined labels now operate under constraints
1166 of next binding contour. */
1168 struct binding_level
*level_chain
;
1169 level_chain
= current_binding_level
->level_chain
;
1173 for (labels
= named_label_uses
; labels
; labels
= TREE_CHAIN (labels
))
1174 if (TREE_TYPE (labels
) == (tree
)current_binding_level
)
1176 TREE_TYPE (labels
) = (tree
)level_chain
;
1177 TREE_PURPOSE (labels
) = level_chain
->names
;
1182 tmp
= current_binding_level
->keep
;
1184 pop_binding_level ();
1186 DECL_INITIAL (current_function_decl
) = block
;
1189 if (!block_previously_created
)
1190 current_binding_level
->blocks
1191 = chainon (current_binding_level
->blocks
, block
);
1193 /* If we did not make a block for the level just exited,
1194 any blocks made for inner levels
1195 (since they cannot be recorded as subblocks in that level)
1196 must be carried forward so they will later become subblocks
1197 of something else. */
1201 current_binding_level
->blocks
1202 = chainon (subblocks
, current_binding_level
->blocks
);
1204 current_binding_level
->blocks
1205 = chainon (current_binding_level
->blocks
, subblocks
);
1208 /* Take care of compiler's internal binding structures. */
1212 /* We did not call push_momentary for this
1213 binding contour, so there is nothing to pop. */
1216 expand_end_bindings (getdecls (), keep
, 1);
1217 /* Each and every BLOCK node created here in `poplevel' is important
1218 (e.g. for proper debugging information) so if we created one
1219 earlier, mark it as "used". */
1221 TREE_USED (block
) = 1;
1222 block
= poplevel (keep
, reverse
, real_functionbody
);
1225 /* Each and every BLOCK node created here in `poplevel' is important
1226 (e.g. for proper debugging information) so if we created one
1227 earlier, mark it as "used". */
1229 TREE_USED (block
) = 1;
1233 /* Resume a binding level for a namespace. */
1236 struct binding_level
*b
;
1240 resume_binding_level (b
);
1242 /* Resume the variable caches. */
1243 decls
= current_binding_level
->names
;
1245 /* Restore the meanings of the local variables of this level. */
1247 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1249 if (DECL_NAME (link
) != NULL_TREE
)
1250 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = link
;
1252 /* If this is a TYPE_DECL, push it into the type value slot. */
1253 if (TREE_CODE (link
) == TYPE_DECL
)
1254 SET_IDENTIFIER_TYPE_VALUE (DECL_NAME (link
), TREE_TYPE (link
));
1258 /* Delete the node BLOCK from the current binding level.
1259 This is used for the block inside a stmt expr ({...})
1260 so that the block can be reinserted where appropriate. */
1263 delete_block (block
)
1267 if (current_binding_level
->blocks
== block
)
1268 current_binding_level
->blocks
= TREE_CHAIN (block
);
1269 for (t
= current_binding_level
->blocks
; t
;)
1271 if (TREE_CHAIN (t
) == block
)
1272 TREE_CHAIN (t
) = TREE_CHAIN (block
);
1276 TREE_CHAIN (block
) = NULL_TREE
;
1277 /* Clear TREE_USED which is always set by poplevel.
1278 The flag is set again if insert_block is called. */
1279 TREE_USED (block
) = 0;
1282 /* Insert BLOCK at the end of the list of subblocks of the
1283 current binding level. This is used when a BIND_EXPR is expanded,
1284 to handle the BLOCK node inside the BIND_EXPR. */
1287 insert_block (block
)
1290 TREE_USED (block
) = 1;
1291 current_binding_level
->blocks
1292 = chainon (current_binding_level
->blocks
, block
);
1295 /* Add BLOCK to the current list of blocks for this binding contour. */
1297 add_block_current_level (block
)
1300 current_binding_level
->blocks
1301 = chainon (current_binding_level
->blocks
, block
);
1304 /* Set the BLOCK node for the innermost scope
1305 (the one we are currently in). */
1309 register tree block
;
1311 current_binding_level
->this_block
= block
;
1314 /* Do a pushlevel for class declarations. */
1318 register struct binding_level
*newlevel
;
1320 /* Reuse or create a struct for this binding level. */
1321 #if defined(DEBUG_CP_BINDING_LEVELS)
1323 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1324 if (free_binding_level
)
1325 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1327 newlevel
= free_binding_level
;
1328 free_binding_level
= free_binding_level
->level_chain
;
1332 /* Create a new `struct binding_level'. */
1333 newlevel
= (struct binding_level
*) xmalloc (sizeof (struct binding_level
));
1336 #if defined(DEBUG_CP_BINDING_LEVELS)
1338 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1340 push_binding_level (newlevel
, 0, 0);
1342 decl_stack
= push_decl_level (decl_stack
, &decl_obstack
);
1343 class_binding_level
= current_binding_level
;
1344 class_binding_level
->parm_flag
= 2;
1345 /* We have just pushed into a new binding level. Now, fake out the rest
1346 of the compiler. Set the `current_binding_level' back to point to
1347 the most closely containing non-class binding level. */
1350 current_binding_level
= current_binding_level
->level_chain
;
1352 while (current_binding_level
->parm_flag
== 2);
1355 /* ...and a poplevel for class declarations. FORCE is used to force
1356 clearing out of CLASS_VALUEs after a class definition. */
1358 poplevel_class (force
)
1361 register struct binding_level
*level
= class_binding_level
;
1362 tree block
= NULL_TREE
;
1365 my_friendly_assert (level
!= 0, 354);
1367 decl_stack
= pop_stack_level (decl_stack
);
1368 for (shadowed
= level
->shadowed
; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
1369 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1370 /* If we're leaving a toplevel class, don't bother to do the setting
1371 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1372 shouldn't even be used when current_class_type isn't set, and second,
1373 if we don't touch it here, we're able to use the cache effect if the
1374 next time we're entering a class scope, it is the same class. */
1375 if (current_class_depth
!= 1 || force
)
1376 for (shadowed
= level
->class_shadowed
;
1378 shadowed
= TREE_CHAIN (shadowed
))
1379 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1381 /* Remember to save what IDENTIFIER's were bound in this scope so we
1382 can recover from cache misses. */
1383 previous_class_values
= class_binding_level
->class_shadowed
;
1384 for (shadowed
= level
->type_shadowed
;
1386 shadowed
= TREE_CHAIN (shadowed
))
1387 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1389 GNU_xref_end_scope ((HOST_WIDE_INT
) class_binding_level
,
1390 (HOST_WIDE_INT
) class_binding_level
->level_chain
,
1391 class_binding_level
->parm_flag
,
1392 class_binding_level
->keep
,
1393 class_binding_level
->tag_transparent
);
1395 if (class_binding_level
->parm_flag
!= 2)
1396 class_binding_level
= (struct binding_level
*)0;
1398 /* Now, pop out of the the binding level which we created up in the
1399 `pushlevel_class' routine. */
1400 #if defined(DEBUG_CP_BINDING_LEVELS)
1402 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1404 pop_binding_level ();
1409 /* For debugging. */
1410 int no_print_functions
= 0;
1411 int no_print_builtins
= 0;
1414 print_binding_level (lvl
)
1415 struct binding_level
*lvl
;
1419 fprintf (stderr
, " blocks=");
1420 fprintf (stderr
, HOST_PTR_PRINTF
, lvl
->blocks
);
1421 fprintf (stderr
, " n_incomplete=%d parm_flag=%d keep=%d",
1422 lvl
->n_incomplete
, lvl
->parm_flag
, lvl
->keep
);
1423 if (lvl
->tag_transparent
)
1424 fprintf (stderr
, " tag-transparent");
1425 if (lvl
->more_cleanups_ok
)
1426 fprintf (stderr
, " more-cleanups-ok");
1427 if (lvl
->have_cleanups
)
1428 fprintf (stderr
, " have-cleanups");
1429 fprintf (stderr
, "\n");
1432 fprintf (stderr
, " names:\t");
1433 /* We can probably fit 3 names to a line? */
1434 for (t
= lvl
->names
; t
; t
= TREE_CHAIN (t
))
1436 if (no_print_functions
&& (TREE_CODE(t
) == FUNCTION_DECL
))
1438 if (no_print_builtins
1439 && (TREE_CODE(t
) == TYPE_DECL
)
1440 && (!strcmp(DECL_SOURCE_FILE(t
),"<built-in>")))
1443 /* Function decls tend to have longer names. */
1444 if (TREE_CODE (t
) == FUNCTION_DECL
)
1451 fprintf (stderr
, "\n\t");
1454 print_node_brief (stderr
, "", t
, 0);
1455 if (TREE_CODE (t
) == ERROR_MARK
)
1459 fprintf (stderr
, "\n");
1463 fprintf (stderr
, " tags:\t");
1465 for (t
= lvl
->tags
; t
; t
= TREE_CHAIN (t
))
1467 if (TREE_PURPOSE (t
) == NULL_TREE
)
1469 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1476 fprintf (stderr
, "\n\t");
1479 if (TREE_PURPOSE (t
) == NULL_TREE
)
1481 print_node_brief (stderr
, "<unnamed-typedef", TREE_VALUE (t
), 0);
1482 fprintf (stderr
, ">");
1484 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1485 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1488 print_node_brief (stderr
, "<typedef", TREE_PURPOSE (t
), 0);
1489 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1490 fprintf (stderr
, ">");
1494 fprintf (stderr
, "\n");
1498 fprintf (stderr
, " shadowed:");
1499 for (t
= lvl
->shadowed
; t
; t
= TREE_CHAIN (t
))
1501 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1503 fprintf (stderr
, "\n");
1505 if (lvl
->class_shadowed
)
1507 fprintf (stderr
, " class-shadowed:");
1508 for (t
= lvl
->class_shadowed
; t
; t
= TREE_CHAIN (t
))
1510 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1512 fprintf (stderr
, "\n");
1514 if (lvl
->type_shadowed
)
1516 fprintf (stderr
, " type-shadowed:");
1517 for (t
= lvl
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
1520 fprintf (stderr
, "\n\t");
1521 print_node_brief (stderr
, "<", TREE_PURPOSE (t
), 0);
1523 print_node_brief (stderr
, " ", TREE_VALUE (t
), 0);
1525 fprintf (stderr
, " (none)");
1526 fprintf (stderr
, ">");
1528 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1531 fprintf (stderr
, "\n");
1536 print_other_binding_stack (stack
)
1537 struct binding_level
*stack
;
1539 struct binding_level
*level
;
1540 for (level
= stack
; level
!= global_binding_level
; level
= level
->level_chain
)
1542 fprintf (stderr
, "binding level ");
1543 fprintf (stderr
, HOST_PTR_PRINTF
, level
);
1544 fprintf (stderr
, "\n");
1545 print_binding_level (level
);
1550 print_binding_stack ()
1552 struct binding_level
*b
;
1553 fprintf (stderr
, "current_binding_level=");
1554 fprintf (stderr
, HOST_PTR_PRINTF
, current_binding_level
);
1555 fprintf (stderr
, "\nclass_binding_level=");
1556 fprintf (stderr
, HOST_PTR_PRINTF
, class_binding_level
);
1557 fprintf (stderr
, "\nglobal_binding_level=");
1558 fprintf (stderr
, HOST_PTR_PRINTF
, global_binding_level
);
1559 fprintf (stderr
, "\n");
1560 if (class_binding_level
)
1562 for (b
= class_binding_level
; b
; b
= b
->level_chain
)
1563 if (b
== current_binding_level
)
1566 b
= class_binding_level
;
1568 b
= current_binding_level
;
1571 b
= current_binding_level
;
1572 print_other_binding_stack (b
);
1573 fprintf (stderr
, "global:\n");
1574 print_binding_level (global_binding_level
);
1577 /* Push into the scope of the NAME namespace. */
1579 push_namespace (name
)
1582 extern tree current_namespace
;
1583 tree old_id
= get_namespace_id ();
1585 tree d
= make_node (NAMESPACE_DECL
);
1587 DECL_NAME (d
) = name
;
1588 DECL_ASSEMBLER_NAME (d
) = name
;
1589 /* pushdecl wants to check the size of it to see if it is incomplete... */
1590 TREE_TYPE (d
) = void_type_node
;
1591 /* Mark them as external, so redeclaration_error_message doesn't think
1592 they are duplicates. */
1593 DECL_EXTERNAL (d
) = 1;
1596 if (NAMESPACE_LEVEL (d
) == 0)
1598 /* This is new for this compilation unit. */
1600 declare_namespace_level ();
1601 NAMESPACE_LEVEL (d
) = (tree
)current_binding_level
;
1605 resume_level ((struct binding_level
*)NAMESPACE_LEVEL (d
));
1608 /* This code is just is bit old now... */
1609 current_namespace
= tree_cons (NULL_TREE
, name
, current_namespace
);
1610 buf
= (char *) alloca (4 + (old_id
? IDENTIFIER_LENGTH (old_id
) : 0)
1611 + IDENTIFIER_LENGTH (name
));
1612 sprintf (buf
, "%s%s", old_id
? IDENTIFIER_POINTER (old_id
) : "",
1613 IDENTIFIER_POINTER (name
));
1614 TREE_PURPOSE (current_namespace
) = get_identifier (buf
);
1617 /* Pop from the scope of the current namespace. */
1621 extern tree current_namespace
;
1623 current_namespace
= TREE_CHAIN (current_namespace
);
1625 /* Just in case we get out of sync. */
1626 if (! namespace_bindings_p ())
1629 decls
= current_binding_level
->names
;
1631 /* Clear out the meanings of the local variables of this level. */
1633 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1635 if (DECL_NAME (link
) != NULL_TREE
)
1637 /* If the ident. was used or addressed via a local extern decl,
1638 don't forget that fact. */
1639 if (DECL_EXTERNAL (link
))
1641 if (TREE_USED (link
))
1642 TREE_USED (DECL_ASSEMBLER_NAME (link
)) = 1;
1643 if (TREE_ADDRESSABLE (link
))
1644 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link
)) = 1;
1646 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1650 /* Restore all name-meanings of the outer levels
1651 that were shadowed by this level. */
1653 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
1654 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1655 for (link
= current_binding_level
->class_shadowed
;
1656 link
; link
= TREE_CHAIN (link
))
1657 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1658 for (link
= current_binding_level
->type_shadowed
;
1659 link
; link
= TREE_CHAIN (link
))
1660 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1662 /* suspend a level. */
1663 suspend_binding_level ();
1666 /* Subroutines for reverting temporarily to top-level for instantiation
1667 of templates and such. We actually need to clear out the class- and
1668 local-value slots of all identifiers, so that only the global values
1669 are at all visible. Simply setting current_binding_level to the global
1670 scope isn't enough, because more binding levels may be pushed. */
1671 struct saved_scope
{
1672 struct binding_level
*old_binding_level
;
1674 struct saved_scope
*prev
;
1675 tree class_name
, class_type
, function_decl
;
1676 tree base_init_list
, member_init_list
;
1677 struct binding_level
*class_bindings
;
1678 tree previous_class_type
;
1679 tree
*lang_base
, *lang_stack
, lang_name
;
1683 static struct saved_scope
*current_saved_scope
;
1684 extern tree prev_class_type
;
1687 push_to_top_level ()
1689 extern int current_lang_stacksize
;
1690 struct saved_scope
*s
=
1691 (struct saved_scope
*) xmalloc (sizeof (struct saved_scope
));
1692 struct binding_level
*b
= current_binding_level
;
1693 tree old_bindings
= NULL_TREE
;
1695 /* Have to include global_binding_level, because class-level decls
1696 aren't listed anywhere useful. */
1697 for (; b
; b
= b
->level_chain
)
1701 if (b
== global_binding_level
)
1704 for (t
= b
->names
; t
; t
= TREE_CHAIN (t
))
1706 tree binding
, t1
, t2
= t
;
1707 tree id
= DECL_ASSEMBLER_NAME (t2
);
1710 || (!IDENTIFIER_LOCAL_VALUE (id
)
1711 && !IDENTIFIER_CLASS_VALUE (id
)))
1714 for (t1
= old_bindings
; t1
; t1
= TREE_CHAIN (t1
))
1715 if (TREE_VEC_ELT (t1
, 0) == id
)
1718 binding
= make_tree_vec (4);
1721 my_friendly_assert (TREE_CODE (id
) == IDENTIFIER_NODE
, 135);
1722 TREE_VEC_ELT (binding
, 0) = id
;
1723 TREE_VEC_ELT (binding
, 1) = IDENTIFIER_TYPE_VALUE (id
);
1724 TREE_VEC_ELT (binding
, 2) = IDENTIFIER_LOCAL_VALUE (id
);
1725 TREE_VEC_ELT (binding
, 3) = IDENTIFIER_CLASS_VALUE (id
);
1726 IDENTIFIER_LOCAL_VALUE (id
) = NULL_TREE
;
1727 IDENTIFIER_CLASS_VALUE (id
) = NULL_TREE
;
1729 TREE_CHAIN (binding
) = old_bindings
;
1730 old_bindings
= binding
;
1734 /* Unwind type-value slots back to top level. */
1735 for (t
= b
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
1736 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t
), TREE_VALUE (t
));
1738 /* Clear out class-level bindings cache. */
1739 if (current_binding_level
== global_binding_level
1740 && previous_class_type
!= NULL_TREE
)
1743 previous_class_type
= NULL_TREE
;
1746 s
->old_binding_level
= current_binding_level
;
1747 current_binding_level
= global_binding_level
;
1749 s
->class_name
= current_class_name
;
1750 s
->class_type
= current_class_type
;
1751 s
->function_decl
= current_function_decl
;
1752 s
->base_init_list
= current_base_init_list
;
1753 s
->member_init_list
= current_member_init_list
;
1754 s
->class_bindings
= class_binding_level
;
1755 s
->previous_class_type
= previous_class_type
;
1756 s
->lang_stack
= current_lang_stack
;
1757 s
->lang_base
= current_lang_base
;
1758 s
->lang_stacksize
= current_lang_stacksize
;
1759 s
->lang_name
= current_lang_name
;
1760 s
->named_labels
= named_labels
;
1761 current_class_name
= current_class_type
= NULL_TREE
;
1762 current_function_decl
= NULL_TREE
;
1763 class_binding_level
= (struct binding_level
*)0;
1764 previous_class_type
= NULL_TREE
;
1765 current_lang_stacksize
= 10;
1766 current_lang_stack
= current_lang_base
1767 = (tree
*) xmalloc (current_lang_stacksize
* sizeof (tree
));
1768 current_lang_name
= lang_name_cplusplus
;
1769 strict_prototype
= strict_prototypes_lang_cplusplus
;
1770 named_labels
= NULL_TREE
;
1772 s
->prev
= current_saved_scope
;
1773 s
->old_bindings
= old_bindings
;
1774 current_saved_scope
= s
;
1778 pop_from_top_level ()
1780 extern int current_lang_stacksize
;
1781 struct saved_scope
*s
= current_saved_scope
;
1784 if (previous_class_type
)
1785 previous_class_type
= NULL_TREE
;
1787 current_binding_level
= s
->old_binding_level
;
1788 current_saved_scope
= s
->prev
;
1789 for (t
= s
->old_bindings
; t
; t
= TREE_CHAIN (t
))
1791 tree id
= TREE_VEC_ELT (t
, 0);
1794 IDENTIFIER_TYPE_VALUE (id
) = TREE_VEC_ELT (t
, 1);
1795 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VEC_ELT (t
, 2);
1796 IDENTIFIER_CLASS_VALUE (id
) = TREE_VEC_ELT (t
, 3);
1799 current_class_name
= s
->class_name
;
1800 current_class_type
= s
->class_type
;
1801 current_base_init_list
= s
->base_init_list
;
1802 current_member_init_list
= s
->member_init_list
;
1803 current_function_decl
= s
->function_decl
;
1804 class_binding_level
= s
->class_bindings
;
1805 previous_class_type
= s
->previous_class_type
;
1806 free (current_lang_base
);
1807 current_lang_base
= s
->lang_base
;
1808 current_lang_stack
= s
->lang_stack
;
1809 current_lang_name
= s
->lang_name
;
1810 current_lang_stacksize
= s
->lang_stacksize
;
1811 if (current_lang_name
== lang_name_cplusplus
)
1812 strict_prototype
= strict_prototypes_lang_cplusplus
;
1813 else if (current_lang_name
== lang_name_c
)
1814 strict_prototype
= strict_prototypes_lang_c
;
1815 named_labels
= s
->named_labels
;
1820 /* Push a definition of struct, union or enum tag "name".
1821 into binding_level "b". "type" should be the type node,
1822 We assume that the tag "name" is not already defined.
1824 Note that the definition may really be just a forward reference.
1825 In that case, the TYPE_SIZE will be a NULL_TREE.
1827 C++ gratuitously puts all these tags in the name space. */
1829 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
1830 record the shadowed value for this binding contour. TYPE is
1831 the type that ID maps to. */
1834 set_identifier_type_value_with_scope (id
, type
, b
)
1837 struct binding_level
*b
;
1839 if (b
!= global_binding_level
)
1841 tree old_type_value
= IDENTIFIER_TYPE_VALUE (id
);
1843 = tree_cons (id
, old_type_value
, b
->type_shadowed
);
1845 SET_IDENTIFIER_TYPE_VALUE (id
, type
);
1848 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
1851 set_identifier_type_value (id
, type
)
1855 set_identifier_type_value_with_scope (id
, type
, inner_binding_level
);
1858 /* Subroutine "set_nested_typename" builds the nested-typename of
1859 the type decl in question. (Argument CLASSNAME can actually be
1860 a function as well, if that's the smallest containing scope.) */
1863 set_nested_typename (decl
, classname
, name
, type
)
1864 tree decl
, classname
, name
, type
;
1867 my_friendly_assert (TREE_CODE (decl
) == TYPE_DECL
, 136);
1869 /* No need to do this for anonymous names, since they're unique. */
1870 if (ANON_AGGRNAME_P (name
))
1872 DECL_NESTED_TYPENAME (decl
) = name
;
1876 if (classname
== NULL_TREE
)
1877 classname
= get_identifier ("");
1879 my_friendly_assert (TREE_CODE (classname
) == IDENTIFIER_NODE
, 137);
1880 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 138);
1881 buf
= (char *) alloca (4 + IDENTIFIER_LENGTH (classname
)
1882 + IDENTIFIER_LENGTH (name
));
1883 sprintf (buf
, "%s::%s", IDENTIFIER_POINTER (classname
),
1884 IDENTIFIER_POINTER (name
));
1885 DECL_NESTED_TYPENAME (decl
) = get_identifier (buf
);
1886 TREE_MANGLED (DECL_NESTED_TYPENAME (decl
)) = 1;
1888 /* Create an extra decl so that the nested name will have a type value
1889 where appropriate. */
1891 tree nested
, type_decl
;
1892 nested
= DECL_NESTED_TYPENAME (decl
);
1893 type_decl
= build_decl (TYPE_DECL
, nested
, type
);
1894 DECL_NESTED_TYPENAME (type_decl
) = nested
;
1895 SET_DECL_ARTIFICIAL (type_decl
);
1896 /* Mark the TYPE_DECL node created just above as a gratuitous one so that
1897 dwarfout.c will know not to generate a TAG_typedef DIE for it, and
1898 sdbout.c won't try to output a .def for "::foo". */
1899 DECL_IGNORED_P (type_decl
) = 1;
1901 /* Remove this when local classes are fixed. */
1902 SET_IDENTIFIER_TYPE_VALUE (nested
, type
);
1904 pushdecl_nonclass_level (type_decl
);
1908 /* Pop off extraneous binding levels left over due to syntax errors.
1910 We don't pop past namespaces, as they might be valid. */
1914 #ifdef DEBUG_CP_BINDING_LEVELS
1915 fprintf (stderr
, "XXX entering pop_everything ()\n");
1917 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
1919 if (class_binding_level
)
1920 pop_nested_class (1);
1924 #ifdef DEBUG_CP_BINDING_LEVELS
1925 fprintf (stderr
, "XXX leaving pop_everything ()\n");
1929 #if 0 /* not yet, should get fixed properly later */
1930 /* Create a TYPE_DECL node with the correct DECL_ASSEMBLER_NAME.
1931 Other routines shouldn't use build_decl directly; they'll produce
1932 incorrect results with `-g' unless they duplicate this code.
1934 This is currently needed mainly for dbxout.c, but we can make
1935 use of it in method.c later as well. */
1937 make_type_decl (name
, type
)
1941 decl
= build_decl (TYPE_DECL
, name
, type
);
1942 if (TYPE_NAME (type
) == name
)
1943 /* Class/union/enum definition, or a redundant typedef for same. */
1945 id
= get_identifier (build_overload_name (type
, 1, 1));
1946 DECL_ASSEMBLER_NAME (decl
) = id
;
1948 else if (TYPE_NAME (type
) != NULL_TREE
)
1949 /* Explicit typedef, or implicit typedef for template expansion. */
1950 DECL_ASSEMBLER_NAME (decl
) = DECL_ASSEMBLER_NAME (TYPE_NAME (type
));
1953 /* XXX: Typedef for unnamed struct; some other situations.
1954 TYPE_NAME is null; what's right here? */
1960 /* Push a tag name NAME for struct/class/union/enum type TYPE.
1961 Normally put into into the inner-most non-tag-transparent scope,
1962 but if GLOBALIZE is true, put it in the inner-most non-class scope.
1963 The latter is needed for implicit declarations. */
1966 pushtag (name
, type
, globalize
)
1970 register struct binding_level
*b
;
1974 b
= inner_binding_level
;
1975 while (b
->tag_transparent
1976 || (globalize
&& b
->parm_flag
== 2))
1979 if (toplevel_bindings_p ())
1980 b
->tags
= perm_tree_cons (name
, type
, b
->tags
);
1982 b
->tags
= saveable_tree_cons (name
, type
, b
->tags
);
1986 context
= type
? TYPE_CONTEXT (type
) : NULL_TREE
;
1987 if (! context
&& ! globalize
)
1988 context
= current_scope ();
1990 c_decl
= TREE_CODE (context
) == FUNCTION_DECL
1991 ? context
: TYPE_MAIN_DECL (context
);
1994 /* Record the identifier as the type's name if it has none. */
1995 if (TYPE_NAME (type
) == NULL_TREE
)
1996 TYPE_NAME (type
) = name
;
1999 /* Do C++ gratuitous typedefing. */
2000 if (IDENTIFIER_TYPE_VALUE (name
) != type
)
2005 if (b
->parm_flag
!= 2
2006 || TYPE_SIZE (current_class_type
) != NULL_TREE
)
2008 d
= lookup_nested_type (type
, c_decl
);
2013 #if 0 /* not yet, should get fixed properly later */
2014 d
= make_type_decl (name
, type
);
2016 d
= build_decl (TYPE_DECL
, name
, type
);
2018 SET_DECL_ARTIFICIAL (d
);
2019 #ifdef DWARF_DEBUGGING_INFO
2020 if (write_symbols
== DWARF_DEBUG
)
2022 /* Mark the TYPE_DECL node we created just above as an
2023 gratuitous one. We need to do this so that dwarfout.c
2024 will understand that it is not supposed to output a
2025 TAG_typedef DIE for it. */
2026 DECL_IGNORED_P (d
) = 1;
2028 #endif /* DWARF_DEBUGGING_INFO */
2029 set_identifier_type_value_with_scope (name
, type
, b
);
2034 TYPE_NAME (type
) = d
;
2036 /* If it is anonymous, then we are called from pushdecl,
2037 and we don't want to infinitely recurse. */
2038 if (! ANON_AGGRNAME_P (name
))
2040 if (b
->parm_flag
== 2)
2041 d
= pushdecl_class_level (d
);
2043 d
= pushdecl_with_scope (d
, b
);
2048 /* Make nested declarations go into class-level scope. */
2050 d
= build_decl (TYPE_DECL
, name
, type
);
2051 SET_DECL_ARTIFICIAL (d
);
2052 #ifdef DWARF_DEBUGGING_INFO
2053 if (write_symbols
== DWARF_DEBUG
)
2055 /* Mark the TYPE_DECL node we created just above as an
2056 gratuitous one. We need to do this so that dwarfout.c
2057 will understand that it is not supposed to output a
2058 TAG_typedef DIE for it. */
2059 DECL_IGNORED_P (d
) = 1;
2061 #endif /* DWARF_DEBUGGING_INFO */
2063 TYPE_MAIN_DECL (type
) = d
;
2065 /* Make sure we're in this type's scope when we push the
2066 decl for a template, otherwise class_binding_level will
2067 be NULL and we'll end up dying inside of
2068 push_class_level_binding. */
2069 if (TREE_CODE (type
) == UNINSTANTIATED_P_TYPE
)
2070 pushclass (type
, 0);
2071 d
= pushdecl_class_level (d
);
2072 if (TREE_CODE (type
) == UNINSTANTIATED_P_TYPE
)
2077 if (write_symbols
!= DWARF_DEBUG
)
2079 if (ANON_AGGRNAME_P (name
))
2080 DECL_IGNORED_P (d
) = 1;
2083 if (context
== NULL_TREE
)
2084 /* Non-nested class. */
2085 set_nested_typename (d
, NULL_TREE
, name
, type
);
2086 else if (context
&& TREE_CODE (context
) == FUNCTION_DECL
)
2087 /* Function-nested class. */
2088 set_nested_typename (d
, DECL_ASSEMBLER_NAME (c_decl
),
2090 else /* if (context && IS_AGGR_TYPE (context)) */
2091 /* Class-nested class. */
2092 set_nested_typename (d
, DECL_NESTED_TYPENAME (c_decl
),
2095 DECL_CONTEXT (d
) = context
;
2096 TYPE_CONTEXT (type
) = DECL_CONTEXT (d
);
2097 DECL_ASSEMBLER_NAME (d
)
2098 = get_identifier (build_overload_name (type
, 1, 1));
2101 if (b
->parm_flag
== 2)
2103 TREE_NONLOCAL_FLAG (type
) = 1;
2104 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2105 CLASSTYPE_TAGS (current_class_type
) = b
->tags
;
2109 if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
2110 /* Use the canonical TYPE_DECL for this node. */
2111 TYPE_STUB_DECL (type
) = TYPE_NAME (type
);
2114 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2115 will be the tagged type we just added to the current
2116 binding level. This fake NULL-named TYPE_DECL node helps
2117 dwarfout.c to know when it needs to output a
2118 representation of a tagged type, and it also gives us a
2119 convenient place to record the "scope start" address for
2122 #if 0 /* not yet, should get fixed properly later */
2123 tree d
= make_type_decl (NULL_TREE
, type
);
2125 tree d
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
2127 TYPE_STUB_DECL (type
) = pushdecl_with_scope (d
, b
);
2131 /* Counter used to create anonymous type names. */
2132 static int anon_cnt
= 0;
2134 /* Return an IDENTIFIER which can be used as a name for
2135 anonymous structs and unions. */
2141 sprintf (buf
, ANON_AGGRNAME_FORMAT
, anon_cnt
++);
2142 return get_identifier (buf
);
2145 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2146 This keeps dbxout from getting confused. */
2150 register struct binding_level
*b
;
2152 static int last_cnt
= 0;
2154 /* Fast out if no new anon names were declared. */
2155 if (last_cnt
== anon_cnt
)
2158 b
= current_binding_level
;
2159 while (b
->tag_transparent
)
2164 /* A NULL purpose means we have already processed all tags
2165 from here to the end of the list. */
2166 if (TREE_PURPOSE (tags
) == NULL_TREE
)
2168 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags
)))
2169 TREE_PURPOSE (tags
) = NULL_TREE
;
2170 tags
= TREE_CHAIN (tags
);
2172 last_cnt
= anon_cnt
;
2175 /* Subroutine of duplicate_decls: return truthvalue of whether
2176 or not types of these decls match.
2178 For C++, we must compare the parameter list so that `int' can match
2179 `int&' in a parameter position, but `int&' is not confused with
2182 decls_match (newdecl
, olddecl
)
2183 tree newdecl
, olddecl
;
2187 if (TREE_CODE (newdecl
) == FUNCTION_DECL
2188 && TREE_CODE (olddecl
) == FUNCTION_DECL
)
2190 tree f1
= TREE_TYPE (newdecl
);
2191 tree f2
= TREE_TYPE (olddecl
);
2192 tree p1
= TYPE_ARG_TYPES (f1
);
2193 tree p2
= TYPE_ARG_TYPES (f2
);
2195 /* When we parse a static member function definition,
2196 we put together a FUNCTION_DECL which thinks its type
2197 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2199 if (TREE_CODE (f1
) == METHOD_TYPE
&& DECL_STATIC_FUNCTION_P (olddecl
))
2200 revert_static_member_fn (&newdecl
, &f1
, &p1
);
2201 else if (TREE_CODE (f2
) == METHOD_TYPE
2202 && DECL_STATIC_FUNCTION_P (newdecl
))
2203 revert_static_member_fn (&olddecl
, &f2
, &p2
);
2205 /* Here we must take care of the case where new default
2206 parameters are specified. Also, warn if an old
2207 declaration becomes ambiguous because default
2208 parameters may cause the two to be ambiguous. */
2209 if (TREE_CODE (f1
) != TREE_CODE (f2
))
2211 if (TREE_CODE (f1
) == OFFSET_TYPE
)
2212 cp_compiler_error ("`%D' redeclared as member function", newdecl
);
2214 cp_compiler_error ("`%D' redeclared as non-member function", newdecl
);
2218 if (comptypes (TREE_TYPE (f1
), TREE_TYPE (f2
), 1))
2220 if (! strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
) == lang_c
2223 types_match
= self_promoting_args_p (p1
);
2224 if (p1
== void_list_node
)
2225 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2227 else if (!strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
)==lang_c
2228 && DECL_LANGUAGE (newdecl
) == lang_c
&& p1
== NULL_TREE
)
2230 types_match
= self_promoting_args_p (p2
);
2231 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2234 types_match
= compparms (p1
, p2
, 3);
2239 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
2240 && TREE_CODE (olddecl
) == TEMPLATE_DECL
)
2242 tree newargs
= DECL_TEMPLATE_PARMS (newdecl
);
2243 tree oldargs
= DECL_TEMPLATE_PARMS (olddecl
);
2244 int i
, len
= TREE_VEC_LENGTH (newargs
);
2246 if (TREE_VEC_LENGTH (oldargs
) != len
)
2249 for (i
= 0; i
< len
; i
++)
2251 tree newarg
= TREE_VALUE (TREE_VEC_ELT (newargs
, i
));
2252 tree oldarg
= TREE_VALUE (TREE_VEC_ELT (oldargs
, i
));
2253 if (TREE_CODE (newarg
) != TREE_CODE (oldarg
))
2255 else if (TREE_CODE (newarg
) == TYPE_DECL
)
2257 else if (! comptypes (TREE_TYPE (newarg
), TREE_TYPE (oldarg
), 1))
2261 if (DECL_TEMPLATE_IS_CLASS (newdecl
)
2262 != DECL_TEMPLATE_IS_CLASS (olddecl
))
2264 else if (DECL_TEMPLATE_IS_CLASS (newdecl
))
2267 types_match
= decls_match (DECL_TEMPLATE_RESULT (olddecl
),
2268 DECL_TEMPLATE_RESULT (newdecl
));
2272 if (TREE_TYPE (newdecl
) == error_mark_node
)
2273 types_match
= TREE_TYPE (olddecl
) == error_mark_node
;
2274 else if (TREE_TYPE (olddecl
) == NULL_TREE
)
2275 types_match
= TREE_TYPE (newdecl
) == NULL_TREE
;
2276 else if (TREE_TYPE (newdecl
) == NULL_TREE
)
2279 types_match
= comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 1);
2285 /* If NEWDECL is `static' and an `extern' was seen previously,
2286 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2287 information about previous usage as an `extern'.)
2289 Note that this does not apply to the C++ case of declaring
2290 a variable `extern const' and then later `const'.
2292 Don't complain if -traditional, since traditional compilers
2295 Don't complain about built-in functions, since they are beyond
2296 the user's control. */
2299 warn_extern_redeclared_static (newdecl
, olddecl
)
2300 tree newdecl
, olddecl
;
2304 static char *explicit_extern_static_warning
2305 = "`%D' was declared `extern' and later `static'";
2306 static char *implicit_extern_static_warning
2307 = "`%D' was declared implicitly `extern' and later `static'";
2309 if (flag_traditional
2310 || TREE_CODE (newdecl
) == TYPE_DECL
)
2313 name
= DECL_ASSEMBLER_NAME (newdecl
);
2314 if (TREE_PUBLIC (name
) && DECL_THIS_STATIC (newdecl
))
2316 /* It's okay to redeclare an ANSI built-in function as static,
2317 or to declare a non-ANSI built-in function as anything. */
2318 if (! (TREE_CODE (newdecl
) == FUNCTION_DECL
2319 && olddecl
!= NULL_TREE
2320 && TREE_CODE (olddecl
) == FUNCTION_DECL
2321 && (DECL_BUILT_IN (olddecl
)
2322 || DECL_BUILT_IN_NONANSI (olddecl
))))
2324 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name
)
2325 ? implicit_extern_static_warning
2326 : explicit_extern_static_warning
, newdecl
);
2327 if (olddecl
!= NULL_TREE
)
2328 cp_pedwarn_at ("previous declaration of `%D'", olddecl
);
2333 /* Handle when a new declaration NEWDECL has the same name as an old
2334 one OLDDECL in the same binding contour. Prints an error message
2337 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2338 Otherwise, return 0. */
2341 duplicate_decls (newdecl
, olddecl
)
2342 register tree newdecl
, olddecl
;
2344 extern struct obstack permanent_obstack
;
2345 unsigned olddecl_uid
= DECL_UID (olddecl
);
2346 int olddecl_friend
= 0, types_match
= 0;
2347 int new_defines_function
;
2348 tree previous_c_decl
= NULL_TREE
;
2350 if (TREE_CODE_CLASS (TREE_CODE (olddecl
)) == 'd')
2351 DECL_MACHINE_ATTRIBUTES (newdecl
) = DECL_MACHINE_ATTRIBUTES (olddecl
);
2353 types_match
= decls_match (newdecl
, olddecl
);
2355 if (TREE_CODE (olddecl
) != TREE_LIST
)
2356 olddecl_friend
= DECL_LANG_SPECIFIC (olddecl
) && DECL_FRIEND_P (olddecl
);
2358 /* If either the type of the new decl or the type of the old decl is an
2359 error_mark_node, then that implies that we have already issued an
2360 error (earlier) for some bogus type specification, and in that case,
2361 it is rather pointless to harass the user with yet more error message
2362 about the same declaration, so well just pretent the types match here. */
2363 if ((TREE_TYPE (newdecl
)
2364 && TREE_CODE (TREE_TYPE (newdecl
)) == ERROR_MARK
)
2365 || (TREE_TYPE (olddecl
)
2366 && TREE_CODE (TREE_TYPE (olddecl
)) == ERROR_MARK
))
2369 if (flag_traditional
&& TREE_CODE (newdecl
) == FUNCTION_DECL
2370 && IDENTIFIER_IMPLICIT_DECL (DECL_ASSEMBLER_NAME (newdecl
)) == olddecl
)
2371 /* If -traditional, avoid error for redeclaring fcn
2372 after implicit decl. */
2374 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2375 && DECL_ARTIFICIAL (olddecl
)
2376 && (DECL_BUILT_IN (olddecl
) || DECL_BUILT_IN_NONANSI (olddecl
)))
2378 /* If you declare a built-in or predefined function name as static,
2379 the old definition is overridden, but optionally warn this was a
2380 bad choice of name. Ditto for overloads. */
2381 if (! DECL_PUBLIC (newdecl
)
2382 || (TREE_CODE (newdecl
) == FUNCTION_DECL
2383 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
)))
2386 cp_warning ("shadowing %s function `%#D'",
2387 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
2389 /* Discard the old built-in function. */
2392 else if (! types_match
)
2394 if (TREE_CODE (newdecl
) != FUNCTION_DECL
)
2396 /* If the built-in is not ansi, then programs can override
2397 it even globally without an error. */
2398 if (! DECL_BUILT_IN (olddecl
))
2399 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2403 cp_error ("declaration of `%#D'", newdecl
);
2404 cp_error ("conflicts with built-in declaration `%#D'",
2410 cp_warning ("declaration of `%#D'", newdecl
);
2411 cp_warning ("conflicts with built-in declaration `%#D'",
2415 else if (TREE_CODE (olddecl
) != TREE_CODE (newdecl
))
2417 if ((TREE_CODE (newdecl
) == FUNCTION_DECL
2418 && TREE_CODE (olddecl
) == TEMPLATE_DECL
2419 && ! DECL_TEMPLATE_IS_CLASS (olddecl
))
2420 || (TREE_CODE (olddecl
) == FUNCTION_DECL
2421 && TREE_CODE (newdecl
) == TEMPLATE_DECL
2422 && ! DECL_TEMPLATE_IS_CLASS (newdecl
)))
2425 cp_error ("`%#D' redeclared as different kind of symbol", newdecl
);
2426 if (TREE_CODE (olddecl
) == TREE_LIST
)
2427 olddecl
= TREE_VALUE (olddecl
);
2428 cp_error_at ("previous declaration of `%#D'", olddecl
);
2430 /* New decl is completely inconsistent with the old one =>
2431 tell caller to replace the old one. */
2435 else if (!types_match
)
2437 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2439 /* The name of a class template may not be declared to refer to
2440 any other template, class, function, object, namespace, value,
2441 or type in the same scope. */
2442 if (DECL_TEMPLATE_IS_CLASS (olddecl
)
2443 || DECL_TEMPLATE_IS_CLASS (newdecl
))
2445 cp_error ("declaration of template `%#D'", newdecl
);
2446 cp_error_at ("conflicts with previous declaration `%#D'",
2451 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2453 if (DECL_LANGUAGE (newdecl
) == lang_c
2454 && DECL_LANGUAGE (olddecl
) == lang_c
)
2456 cp_error ("declaration of C function `%#D' conflicts with",
2458 cp_error_at ("previous declaration `%#D' here", olddecl
);
2460 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
2461 TYPE_ARG_TYPES (TREE_TYPE (olddecl
)), 3))
2463 cp_error ("new declaration `%#D'", newdecl
);
2464 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2470 /* Already complained about this, so don't do so again. */
2471 else if (current_class_type
== NULL_TREE
2472 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl
)) != current_class_type
)
2474 cp_error ("conflicting types for `%#D'", newdecl
);
2475 cp_error_at ("previous declaration as `%#D'", olddecl
);
2480 char *errmsg
= redeclaration_error_message (newdecl
, olddecl
);
2483 cp_error (errmsg
, newdecl
);
2484 if (DECL_NAME (olddecl
) != NULL_TREE
)
2485 cp_error_at ((DECL_INITIAL (olddecl
)
2486 && current_binding_level
== global_binding_level
)
2487 ? "`%#D' previously defined here"
2488 : "`%#D' previously declared here", olddecl
);
2490 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2491 && DECL_INITIAL (olddecl
) != NULL_TREE
2492 && TYPE_ARG_TYPES (TREE_TYPE (olddecl
)) == NULL_TREE
2493 && TYPE_ARG_TYPES (TREE_TYPE (newdecl
)) != NULL_TREE
)
2495 /* Prototype decl follows defn w/o prototype. */
2496 cp_warning_at ("prototype for `%#D'", newdecl
);
2497 cp_warning_at ("follows non-prototype definition here", olddecl
);
2499 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2500 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
))
2502 /* extern "C" int foo ();
2503 int foo () { bar (); }
2505 if (current_lang_stack
== current_lang_base
)
2506 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2509 cp_error_at ("previous declaration of `%#D' with %L linkage",
2510 olddecl
, DECL_LANGUAGE (olddecl
));
2511 cp_error ("conflicts with new declaration with %L linkage",
2512 DECL_LANGUAGE (newdecl
));
2516 if (TREE_CODE (olddecl
) == FUNCTION_DECL
)
2518 tree t1
= TYPE_ARG_TYPES (TREE_TYPE (olddecl
));
2519 tree t2
= TYPE_ARG_TYPES (TREE_TYPE (newdecl
));
2522 if (TREE_CODE (TREE_TYPE (newdecl
)) == METHOD_TYPE
)
2523 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
);
2525 for (; t1
&& t1
!= void_list_node
;
2526 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
), i
++)
2527 if (TREE_PURPOSE (t1
) && TREE_PURPOSE (t2
))
2529 if (1 == simple_cst_equal (TREE_PURPOSE (t1
),
2534 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2536 cp_pedwarn_at ("after previous specification in `%#D'",
2542 cp_error ("default argument given for parameter %d of `%#D'",
2544 cp_error_at ("conflicts with previous specification in `%#D'",
2549 if (DECL_THIS_INLINE (newdecl
) && ! DECL_THIS_INLINE (olddecl
)
2550 && TREE_ADDRESSABLE (olddecl
))
2551 cp_pedwarn ("`%#D' was used before it was declared inline",
2554 /* These bits are logically part of the type for non-functions. */
2555 else if (TREE_READONLY (newdecl
) != TREE_READONLY (olddecl
)
2556 || TREE_THIS_VOLATILE (newdecl
) != TREE_THIS_VOLATILE (olddecl
))
2558 cp_pedwarn ("type qualifiers for `%#D'", newdecl
);
2559 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl
);
2563 /* If new decl is `static' and an `extern' was seen previously,
2565 warn_extern_redeclared_static (newdecl
, olddecl
);
2567 /* We have committed to returning 1 at this point. */
2568 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2570 /* Now that functions must hold information normally held
2571 by field decls, there is extra work to do so that
2572 declaration information does not get destroyed during
2574 if (DECL_VINDEX (olddecl
))
2575 DECL_VINDEX (newdecl
) = DECL_VINDEX (olddecl
);
2576 if (DECL_CONTEXT (olddecl
))
2577 DECL_CONTEXT (newdecl
) = DECL_CONTEXT (olddecl
);
2578 if (DECL_CLASS_CONTEXT (olddecl
))
2579 DECL_CLASS_CONTEXT (newdecl
) = DECL_CLASS_CONTEXT (olddecl
);
2580 if (DECL_CHAIN (newdecl
) == NULL_TREE
)
2581 DECL_CHAIN (newdecl
) = DECL_CHAIN (olddecl
);
2582 if (DECL_NEXT_METHOD (newdecl
) == NULL_TREE
)
2583 DECL_NEXT_METHOD (newdecl
) = DECL_NEXT_METHOD (olddecl
);
2584 if (DECL_PENDING_INLINE_INFO (newdecl
) == (struct pending_inline
*)0)
2585 DECL_PENDING_INLINE_INFO (newdecl
) = DECL_PENDING_INLINE_INFO (olddecl
);
2586 DECL_STATIC_CONSTRUCTOR (newdecl
) |= DECL_STATIC_CONSTRUCTOR (olddecl
);
2587 DECL_STATIC_DESTRUCTOR (newdecl
) |= DECL_STATIC_DESTRUCTOR (olddecl
);
2588 DECL_ABSTRACT_VIRTUAL_P (newdecl
) |= DECL_ABSTRACT_VIRTUAL_P (olddecl
);
2591 /* Deal with C++: must preserve virtual function table size. */
2592 if (TREE_CODE (olddecl
) == TYPE_DECL
)
2594 register tree newtype
= TREE_TYPE (newdecl
);
2595 register tree oldtype
= TREE_TYPE (olddecl
);
2597 DECL_NESTED_TYPENAME (newdecl
) = DECL_NESTED_TYPENAME (olddecl
);
2599 if (newtype
!= error_mark_node
&& oldtype
!= error_mark_node
2600 && TYPE_LANG_SPECIFIC (newtype
) && TYPE_LANG_SPECIFIC (oldtype
))
2602 CLASSTYPE_VSIZE (newtype
) = CLASSTYPE_VSIZE (oldtype
);
2603 CLASSTYPE_FRIEND_CLASSES (newtype
)
2604 = CLASSTYPE_FRIEND_CLASSES (oldtype
);
2607 /* why assert here? Just because debugging information is
2609 /* it happens on something like:
2610 typedef struct Thing {
2615 my_friendly_assert (DECL_IGNORED_P (olddecl
) == DECL_IGNORED_P (newdecl
),
2620 /* Special handling ensues if new decl is a function definition. */
2621 new_defines_function
= (TREE_CODE (newdecl
) == FUNCTION_DECL
2622 && DECL_INITIAL (newdecl
) != NULL_TREE
);
2624 /* Optionally warn about more than one declaration for the same name,
2625 but don't warn about a function declaration followed by a definition. */
2626 if (warn_redundant_decls
2627 && ! DECL_ARTIFICIAL (olddecl
)
2628 && !(new_defines_function
&& DECL_INITIAL (olddecl
) == NULL_TREE
)
2629 /* Don't warn about extern decl followed by (tentative) definition. */
2630 && !(DECL_EXTERNAL (olddecl
) && ! DECL_EXTERNAL (newdecl
)))
2632 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl
);
2633 cp_warning_at ("previous declaration of `%D'", olddecl
);
2636 /* Copy all the DECL_... slots specified in the new decl
2637 except for any that we copy here from the old type. */
2641 /* Automatically handles default parameters. */
2642 tree oldtype
= TREE_TYPE (olddecl
);
2645 /* Make sure we put the new type in the same obstack as the old one. */
2647 push_obstacks (TYPE_OBSTACK (oldtype
), TYPE_OBSTACK (oldtype
));
2650 push_obstacks_nochange ();
2651 end_temporary_allocation ();
2654 /* Merge the data types specified in the two decls. */
2655 newtype
= common_type (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
));
2657 if (TREE_CODE (newdecl
) == VAR_DECL
)
2658 DECL_THIS_EXTERN (newdecl
) |= DECL_THIS_EXTERN (olddecl
);
2659 /* Do this after calling `common_type' so that default
2660 parameters don't confuse us. */
2661 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2662 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
))
2663 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
))))
2665 tree ctype
= NULL_TREE
;
2666 ctype
= DECL_CLASS_CONTEXT (newdecl
);
2667 TREE_TYPE (newdecl
) = build_exception_variant (ctype
, newtype
,
2668 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)));
2669 TREE_TYPE (olddecl
) = build_exception_variant (ctype
, newtype
,
2670 TYPE_RAISES_EXCEPTIONS (oldtype
));
2672 if (! compexcepttypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
2674 cp_error ("declaration of `%D' throws different exceptions...",
2676 cp_error_at ("...from previous declaration here", olddecl
);
2679 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
) = newtype
;
2681 /* Lay the type out, unless already done. */
2682 if (oldtype
!= TREE_TYPE (newdecl
)
2683 && TREE_TYPE (newdecl
) != error_mark_node
)
2684 layout_type (TREE_TYPE (newdecl
));
2686 if (TREE_CODE (newdecl
) == VAR_DECL
2687 || TREE_CODE (newdecl
) == PARM_DECL
2688 || TREE_CODE (newdecl
) == RESULT_DECL
2689 || TREE_CODE (newdecl
) == FIELD_DECL
2690 || TREE_CODE (newdecl
) == TYPE_DECL
)
2691 layout_decl (newdecl
, 0);
2693 /* Merge the type qualifiers. */
2694 if (TREE_READONLY (newdecl
))
2695 TREE_READONLY (olddecl
) = 1;
2696 if (TREE_THIS_VOLATILE (newdecl
))
2697 TREE_THIS_VOLATILE (olddecl
) = 1;
2699 /* Merge the initialization information. */
2700 if (DECL_INITIAL (newdecl
) == NULL_TREE
2701 && DECL_INITIAL (olddecl
) != NULL_TREE
)
2703 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
2704 DECL_SOURCE_FILE (newdecl
) = DECL_SOURCE_FILE (olddecl
);
2705 DECL_SOURCE_LINE (newdecl
) = DECL_SOURCE_LINE (olddecl
);
2708 /* Merge the section attribute.
2709 We want to issue an error if the sections conflict but that must be
2710 done later in decl_attributes since we are called before attributes
2712 if (DECL_SECTION_NAME (newdecl
) == NULL_TREE
)
2713 DECL_SECTION_NAME (newdecl
) = DECL_SECTION_NAME (olddecl
);
2715 /* Keep the old rtl since we can safely use it, unless it's the
2716 call to abort() used for abstract virtuals. */
2717 if ((DECL_LANG_SPECIFIC (olddecl
)
2718 && !DECL_ABSTRACT_VIRTUAL_P (olddecl
))
2719 || DECL_RTL (olddecl
) != DECL_RTL (abort_fndecl
))
2720 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
2724 /* If cannot merge, then use the new type and qualifiers,
2725 and don't preserve the old rtl. */
2728 /* Clean out any memory we had of the old declaration. */
2729 tree oldstatic
= value_member (olddecl
, static_aggregates
);
2731 TREE_VALUE (oldstatic
) = error_mark_node
;
2733 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
2734 TREE_READONLY (olddecl
) = TREE_READONLY (newdecl
);
2735 TREE_THIS_VOLATILE (olddecl
) = TREE_THIS_VOLATILE (newdecl
);
2736 TREE_SIDE_EFFECTS (olddecl
) = TREE_SIDE_EFFECTS (newdecl
);
2739 /* Merge the storage class information. */
2740 DECL_WEAK (newdecl
) |= DECL_WEAK (olddecl
);
2741 TREE_PUBLIC (newdecl
) = TREE_PUBLIC (olddecl
);
2742 TREE_STATIC (olddecl
) = TREE_STATIC (newdecl
) |= TREE_STATIC (olddecl
);
2743 if (! DECL_EXTERNAL (olddecl
))
2744 DECL_EXTERNAL (newdecl
) = 0;
2746 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2748 DECL_C_STATIC (newdecl
) = DECL_C_STATIC (olddecl
);
2749 DECL_INTERFACE_KNOWN (newdecl
) |= DECL_INTERFACE_KNOWN (olddecl
);
2750 DECL_NOT_REALLY_EXTERN (newdecl
) |= DECL_NOT_REALLY_EXTERN (olddecl
);
2753 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2755 DECL_THIS_INLINE (newdecl
) |= DECL_THIS_INLINE (olddecl
);
2757 /* If either decl says `inline', this fn is inline, unless its
2758 definition was passed already. */
2759 if (DECL_INLINE (newdecl
) && DECL_INITIAL (olddecl
) == NULL_TREE
)
2760 DECL_INLINE (olddecl
) = 1;
2761 DECL_INLINE (newdecl
) = DECL_INLINE (olddecl
);
2765 DECL_LANGUAGE (olddecl
) = DECL_LANGUAGE (newdecl
);
2766 DECL_ASSEMBLER_NAME (olddecl
) = DECL_ASSEMBLER_NAME (newdecl
);
2767 DECL_ARGUMENTS (olddecl
) = DECL_ARGUMENTS (newdecl
);
2768 DECL_RESULT (olddecl
) = DECL_RESULT (newdecl
);
2769 DECL_RTL (olddecl
) = DECL_RTL (newdecl
);
2771 if (new_defines_function
)
2772 /* If defining a function declared with other language
2773 linkage, use the previously declared language linkage. */
2774 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2777 /* If redeclaring a builtin function, and not a definition,
2778 it stays built in. */
2779 if (DECL_BUILT_IN (olddecl
))
2781 DECL_BUILT_IN (newdecl
) = 1;
2782 DECL_FUNCTION_CODE (newdecl
) = DECL_FUNCTION_CODE (olddecl
);
2783 /* If we're keeping the built-in definition, keep the rtl,
2784 regardless of declaration matches. */
2785 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
2788 DECL_FRAME_SIZE (newdecl
) = DECL_FRAME_SIZE (olddecl
);
2790 DECL_RESULT (newdecl
) = DECL_RESULT (olddecl
);
2791 if ((DECL_SAVED_INSNS (newdecl
) = DECL_SAVED_INSNS (olddecl
)))
2792 /* Previously saved insns go together with
2793 the function's previous definition. */
2794 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
2795 /* Don't clear out the arguments if we're redefining a function. */
2796 if (DECL_ARGUMENTS (olddecl
))
2797 DECL_ARGUMENTS (newdecl
) = DECL_ARGUMENTS (olddecl
);
2799 if (DECL_LANG_SPECIFIC (olddecl
))
2800 DECL_MAIN_VARIANT (newdecl
) = DECL_MAIN_VARIANT (olddecl
);
2803 if (TREE_CODE (newdecl
) == NAMESPACE_DECL
)
2805 NAMESPACE_LEVEL (newdecl
) = NAMESPACE_LEVEL (olddecl
);
2808 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2810 if (DECL_TEMPLATE_INFO (olddecl
)->length
)
2811 DECL_TEMPLATE_INFO (newdecl
) = DECL_TEMPLATE_INFO (olddecl
);
2812 DECL_TEMPLATE_MEMBERS (newdecl
) = DECL_TEMPLATE_MEMBERS (olddecl
);
2813 DECL_TEMPLATE_INSTANTIATIONS (newdecl
)
2814 = DECL_TEMPLATE_INSTANTIATIONS (olddecl
);
2815 if (DECL_CHAIN (newdecl
) == NULL_TREE
)
2816 DECL_CHAIN (newdecl
) = DECL_CHAIN (olddecl
);
2819 /* Now preserve various other info from the definition. */
2820 TREE_ADDRESSABLE (newdecl
) = TREE_ADDRESSABLE (olddecl
);
2821 TREE_ASM_WRITTEN (newdecl
) = TREE_ASM_WRITTEN (olddecl
);
2822 DECL_COMMON (newdecl
) = DECL_COMMON (olddecl
);
2823 DECL_ASSEMBLER_NAME (newdecl
) = DECL_ASSEMBLER_NAME (olddecl
);
2825 /* Don't really know how much of the language-specific
2826 values we should copy from old to new. */
2827 if (DECL_LANG_SPECIFIC (olddecl
))
2829 DECL_IN_AGGR_P (newdecl
) = DECL_IN_AGGR_P (olddecl
);
2830 DECL_ACCESS (newdecl
) = DECL_ACCESS (olddecl
);
2831 DECL_NONCONVERTING_P (newdecl
) = DECL_NONCONVERTING_P (olddecl
);
2834 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2837 struct lang_decl
*ol
= DECL_LANG_SPECIFIC (olddecl
);
2838 struct lang_decl
*nl
= DECL_LANG_SPECIFIC (newdecl
);
2840 function_size
= sizeof (struct tree_decl
);
2842 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
2843 (char *) olddecl
+ sizeof (struct tree_common
),
2844 function_size
- sizeof (struct tree_common
));
2846 /* Can we safely free the storage used by newdecl? */
2848 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
2849 & ~ obstack_alignment_mask (&permanent_obstack))
2851 if ((char *)newdecl
+ ROUND (function_size
)
2852 + ROUND (sizeof (struct lang_decl
))
2853 == obstack_next_free (&permanent_obstack
))
2855 DECL_MAIN_VARIANT (newdecl
) = olddecl
;
2856 DECL_LANG_SPECIFIC (olddecl
) = ol
;
2857 bcopy ((char *)nl
, (char *)ol
, sizeof (struct lang_decl
));
2859 obstack_free (&permanent_obstack
, newdecl
);
2861 else if (LANG_DECL_PERMANENT (ol
))
2863 if (DECL_MAIN_VARIANT (olddecl
) == olddecl
)
2865 /* Save these lang_decls that would otherwise be lost. */
2866 extern tree free_lang_decl_chain
;
2867 tree free_lang_decl
= (tree
) ol
;
2868 TREE_CHAIN (free_lang_decl
) = free_lang_decl_chain
;
2869 free_lang_decl_chain
= free_lang_decl
;
2879 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
2880 (char *) olddecl
+ sizeof (struct tree_common
),
2881 sizeof (struct tree_decl
) - sizeof (struct tree_common
)
2882 + tree_code_length
[(int)TREE_CODE (newdecl
)] * sizeof (char *));
2885 DECL_UID (olddecl
) = olddecl_uid
;
2887 DECL_FRIEND_P (olddecl
) = 1;
2892 /* Record a decl-node X as belonging to the current lexical scope.
2893 Check for errors (such as an incompatible declaration for the same
2894 name already seen in the same scope).
2896 Returns either X or an old decl for the same name.
2897 If an old decl is returned, it may have been smashed
2898 to agree with what X says. */
2905 #if 0 /* not yet, should get fixed properly later */
2908 register tree name
= DECL_ASSEMBLER_NAME (x
);
2910 register struct binding_level
*b
= current_binding_level
;
2913 static int nglobals
; int len
;
2915 len
= list_length (global_binding_level
->names
);
2917 my_friendly_abort (8);
2918 else if (len
> nglobals
)
2922 if (x
!= current_function_decl
2923 /* Don't change DECL_CONTEXT of virtual methods. */
2924 && (TREE_CODE (x
) != FUNCTION_DECL
|| !DECL_VIRTUAL_P (x
))
2925 && ! DECL_CONTEXT (x
))
2926 DECL_CONTEXT (x
) = current_function_decl
;
2927 /* A local declaration for a function doesn't constitute nesting. */
2928 if (TREE_CODE (x
) == FUNCTION_DECL
&& DECL_INITIAL (x
) == 0)
2929 DECL_CONTEXT (x
) = 0;
2931 #if 0 /* not yet, should get fixed properly later */
2932 /* For functions and class static data, we currently look up the encoded
2933 form of the name. For types, we want the real name. The former will
2934 probably be changed soon, according to MDT. */
2935 if (TREE_CODE (x
) == FUNCTION_DECL
|| TREE_CODE (x
) == VAR_DECL
)
2936 name
= DECL_ASSEMBLER_NAME (x
);
2938 name
= DECL_NAME (x
);
2940 /* Type are looked up using the DECL_NAME, as that is what the rest of the
2941 compiler wants to use. */
2942 if (TREE_CODE (x
) == TYPE_DECL
|| TREE_CODE (x
) == VAR_DECL
2943 || TREE_CODE (x
) == NAMESPACE_DECL
)
2944 name
= DECL_NAME (x
);
2952 t
= lookup_name_current_level (name
);
2953 if (t
== error_mark_node
)
2955 /* error_mark_node is 0 for a while during initialization! */
2957 cp_error_at ("`%#D' used prior to declaration", x
);
2960 else if (t
!= NULL_TREE
)
2962 if (TREE_CODE (t
) == PARM_DECL
)
2964 if (DECL_CONTEXT (t
) == NULL_TREE
)
2965 fatal ("parse errors have confused me too much");
2967 file
= DECL_SOURCE_FILE (t
);
2968 line
= DECL_SOURCE_LINE (t
);
2970 if (((TREE_CODE (x
) == FUNCTION_DECL
&& DECL_LANGUAGE (x
) == lang_c
)
2971 || (TREE_CODE (x
) == TEMPLATE_DECL
2972 && ! DECL_TEMPLATE_IS_CLASS (x
)))
2973 && is_overloaded_fn (t
))
2974 /* don't do anything just yet */;
2975 else if (t
== wchar_decl_node
)
2977 if (pedantic
&& ! DECL_IN_SYSTEM_HEADER (x
))
2978 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x
));
2980 /* Throw away the redeclaration. */
2983 else if (TREE_CODE (t
) != TREE_CODE (x
))
2985 if ((TREE_CODE (t
) == TYPE_DECL
&& DECL_ARTIFICIAL (t
))
2986 || (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)))
2988 /* We do nothing special here, because C++ does such nasty
2989 things with TYPE_DECLs. Instead, just let the TYPE_DECL
2990 get shadowed, and know that if we need to find a TYPE_DECL
2991 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
2992 slot of the identifier. */
2995 else if (duplicate_decls (x
, t
))
2998 else if (duplicate_decls (x
, t
))
3001 /* This is turned off until I have time to do it right (bpk). */
3003 /* Also warn if they did a prototype with `static' on it, but
3004 then later left the `static' off. */
3005 if (! TREE_PUBLIC (name
) && TREE_PUBLIC (x
))
3007 if (DECL_LANG_SPECIFIC (t
) && DECL_FRIEND_P (t
))
3012 cp_warning ("`static' missing from declaration of `%D'",
3014 warning_with_file_and_line (file
, line
,
3015 "previous declaration of `%s'",
3016 decl_as_string (t
, 0));
3019 /* Now fix things so it'll do what they expect. */
3020 if (current_function_decl
)
3021 TREE_PUBLIC (current_function_decl
) = 0;
3023 /* Due to interference in memory reclamation (X may be
3024 obstack-deallocated at this point), we must guard against
3025 one really special case. [jason: This should be handled
3026 by start_function] */
3027 if (current_function_decl
== x
)
3028 current_function_decl
= t
;
3030 if (TREE_CODE (t
) == TYPE_DECL
)
3031 SET_IDENTIFIER_TYPE_VALUE (name
, TREE_TYPE (t
));
3037 if (TREE_CODE (x
) == FUNCTION_DECL
&& ! DECL_FUNCTION_MEMBER_P (x
))
3039 t
= push_overloaded_decl (x
, 1);
3040 if (t
!= x
|| DECL_LANGUAGE (x
) == lang_c
)
3043 else if (TREE_CODE (x
) == TEMPLATE_DECL
&& ! DECL_TEMPLATE_IS_CLASS (x
))
3044 return push_overloaded_decl (x
, 0);
3046 /* If declaring a type as a typedef, and the type has no known
3047 typedef name, install this TYPE_DECL as its typedef name. */
3048 if (TREE_CODE (x
) == TYPE_DECL
)
3050 tree type
= TREE_TYPE (x
);
3051 tree name
= (type
!= error_mark_node
) ? TYPE_NAME (type
) : x
;
3053 if (name
== NULL_TREE
|| TREE_CODE (name
) != TYPE_DECL
)
3055 /* If these are different names, and we're at the global
3056 binding level, make two equivalent definitions. */
3058 if (global_bindings_p ())
3059 TYPE_NAME (type
) = x
;
3063 tree tname
= DECL_NAME (name
);
3065 /* This is a disgusting kludge for dealing with UPTs. */
3066 if (global_bindings_p () && ANON_AGGRNAME_P (tname
))
3068 /* do gratuitous C++ typedefing, and make sure that
3069 we access this type either through TREE_TYPE field
3070 or via the tags list. */
3071 TYPE_NAME (TREE_TYPE (x
)) = x
;
3072 pushtag (tname
, TREE_TYPE (x
), 0);
3075 my_friendly_assert (TREE_CODE (name
) == TYPE_DECL
, 140);
3077 /* Don't set nested_typename on template type parms, for instance.
3078 Any artificial decls that need DECL_NESTED_TYPENAME will have it
3080 if (! DECL_NESTED_TYPENAME (x
) && ! DECL_ARTIFICIAL (x
))
3081 set_nested_typename (x
, current_class_name
, DECL_NAME (x
), type
);
3083 if (type
!= error_mark_node
3085 && TYPE_IDENTIFIER (type
))
3086 set_identifier_type_value_with_scope (DECL_NAME (x
), type
, b
);
3089 /* Multiple external decls of the same identifier ought to match.
3091 We get warnings about inline functions where they are defined.
3092 We get warnings about other functions from push_overloaded_decl.
3094 Avoid duplicate warnings where they are used. */
3095 if (TREE_PUBLIC (x
) && TREE_CODE (x
) != FUNCTION_DECL
)
3099 if (IDENTIFIER_GLOBAL_VALUE (name
) != NULL_TREE
3100 && (DECL_EXTERNAL (IDENTIFIER_GLOBAL_VALUE (name
))
3101 || TREE_PUBLIC (IDENTIFIER_GLOBAL_VALUE (name
))))
3102 decl
= IDENTIFIER_GLOBAL_VALUE (name
);
3107 /* If different sort of thing, we already gave an error. */
3108 && TREE_CODE (decl
) == TREE_CODE (x
)
3109 && ! comptypes (TREE_TYPE (x
), TREE_TYPE (decl
), 1))
3111 cp_pedwarn ("type mismatch with previous external decl", x
);
3112 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
3116 /* In PCC-compatibility mode, extern decls of vars with no current decl
3117 take effect at top level no matter where they are. */
3118 if (flag_traditional
&& DECL_EXTERNAL (x
)
3119 && lookup_name (name
, 0) == NULL_TREE
)
3120 b
= global_binding_level
;
3122 /* This name is new in its binding level.
3123 Install the new declaration and return it. */
3124 if (b
== global_binding_level
)
3126 /* Install a global value. */
3128 /* If the first global decl has external linkage,
3129 warn if we later see static one. */
3130 if (IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
&& DECL_PUBLIC (x
))
3131 TREE_PUBLIC (name
) = 1;
3133 /* Don't install an artificial TYPE_DECL if we already have
3134 another _DECL with that name. */
3135 if (TREE_CODE (x
) != TYPE_DECL
3137 || ! DECL_ARTIFICIAL (x
))
3138 IDENTIFIER_GLOBAL_VALUE (name
) = x
;
3140 /* Don't forget if the function was used via an implicit decl. */
3141 if (IDENTIFIER_IMPLICIT_DECL (name
)
3142 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
3145 /* Don't forget if its address was taken in that way. */
3146 if (IDENTIFIER_IMPLICIT_DECL (name
)
3147 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
3148 TREE_ADDRESSABLE (x
) = 1;
3150 /* Warn about mismatches against previous implicit decl. */
3151 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
3152 /* If this real decl matches the implicit, don't complain. */
3153 && ! (TREE_CODE (x
) == FUNCTION_DECL
3154 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
3156 ("`%D' was previously implicitly declared to return `int'", x
);
3158 /* If new decl is `static' and an `extern' was seen previously,
3160 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
3161 warn_extern_redeclared_static (x
, t
);
3165 /* Here to install a non-global value. */
3166 tree oldlocal
= IDENTIFIER_LOCAL_VALUE (name
);
3167 tree oldglobal
= IDENTIFIER_GLOBAL_VALUE (name
);
3169 /* Don't install an artificial TYPE_DECL if we already have
3170 another _DECL with that name. */
3171 if (TREE_CODE (x
) != TYPE_DECL
3173 || ! DECL_ARTIFICIAL (x
))
3175 b
->shadowed
= tree_cons (name
, oldlocal
, b
->shadowed
);
3176 IDENTIFIER_LOCAL_VALUE (name
) = x
;
3179 /* If this is a TYPE_DECL, push it into the type value slot. */
3180 if (TREE_CODE (x
) == TYPE_DECL
)
3181 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
), b
);
3183 /* Clear out any TYPE_DECL shadowed by a namespace so that
3184 we won't think this is a type. The C struct hack doesn't
3185 go through namespaces. */
3186 if (TREE_CODE (x
) == NAMESPACE_DECL
)
3187 set_identifier_type_value_with_scope (name
, NULL_TREE
, b
);
3189 /* If this is an extern function declaration, see if we
3190 have a global definition or declaration for the function. */
3191 if (oldlocal
== NULL_TREE
3192 && DECL_EXTERNAL (x
)
3193 && oldglobal
!= NULL_TREE
3194 && TREE_CODE (x
) == FUNCTION_DECL
3195 && TREE_CODE (oldglobal
) == FUNCTION_DECL
)
3197 /* We have one. Their types must agree. */
3198 if (decls_match (x
, oldglobal
))
3202 cp_warning ("extern declaration of `%#D' doesn't match", x
);
3203 cp_warning_at ("global declaration `%#D'", oldglobal
);
3206 /* If we have a local external declaration,
3207 and no file-scope declaration has yet been seen,
3208 then if we later have a file-scope decl it must not be static. */
3209 if (oldlocal
== NULL_TREE
3210 && oldglobal
== NULL_TREE
3211 && DECL_EXTERNAL (x
)
3214 TREE_PUBLIC (name
) = 1;
3217 if (DECL_FROM_INLINE (x
))
3218 /* Inline decls shadow nothing. */;
3220 /* Warn if shadowing an argument at the top level of the body. */
3221 else if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
3222 && TREE_CODE (oldlocal
) == PARM_DECL
3223 && TREE_CODE (x
) != PARM_DECL
)
3225 /* Go to where the parms should be and see if we
3227 struct binding_level
*b
= current_binding_level
->level_chain
;
3233 if (b
->parm_flag
== 1)
3234 cp_error ("declaration of `%#D' shadows a parameter", name
);
3236 /* Maybe warn if shadowing something else. */
3237 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
3238 /* No shadow warnings for internally generated vars. */
3239 && ! DECL_ARTIFICIAL (x
)
3240 /* No shadow warnings for vars made for inlining. */
3241 && ! DECL_FROM_INLINE (x
))
3243 char *warnstring
= NULL
;
3245 if (oldlocal
!= NULL_TREE
&& TREE_CODE (oldlocal
) == PARM_DECL
)
3246 warnstring
= "declaration of `%s' shadows a parameter";
3247 else if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
3248 && !TREE_STATIC (name
))
3249 warnstring
= "declaration of `%s' shadows a member of `this'";
3250 else if (oldlocal
!= NULL_TREE
)
3251 warnstring
= "declaration of `%s' shadows previous local";
3252 else if (oldglobal
!= NULL_TREE
)
3253 warnstring
= "declaration of `%s' shadows global declaration";
3256 warning (warnstring
, IDENTIFIER_POINTER (name
));
3260 if (TREE_CODE (x
) == FUNCTION_DECL
)
3262 /* This is probably the wrong place to check this, but it has to
3263 come after the call to duplicate_decls. */
3264 tree arg
= TYPE_ARG_TYPES (TREE_TYPE (x
));
3265 int saw_def
= 0, i
= 1;
3266 for (; arg
&& arg
!= void_list_node
; arg
= TREE_CHAIN (arg
), ++i
)
3268 if (TREE_PURPOSE (arg
))
3272 cp_error ("default argument missing for parameter %d of `%#D'",
3279 /* Keep count of variables in this level with incomplete type. */
3280 if (TREE_CODE (x
) != TEMPLATE_DECL
3281 && TYPE_SIZE (TREE_TYPE (x
)) == NULL_TREE
3282 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
3284 if (++b
->n_incomplete
== 0)
3285 error ("too many incomplete variables at this point");
3288 /* Keep count of variables in this level with incomplete type. */
3289 /* RTTI TD entries are created while defining the type_info. */
3290 if (TREE_CODE (x
) == VAR_DECL
3291 && TREE_TYPE (x
) != error_mark_node
3292 && TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
3293 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))
3295 if (++b
->n_incomplete
== 0)
3296 error ("too many incomplete variables at this point");
3300 /* Put decls on list in reverse order.
3301 We will reverse them later if necessary. */
3302 TREE_CHAIN (x
) = b
->names
;
3304 if (! (b
!= global_binding_level
|| TREE_PERMANENT (x
)))
3305 my_friendly_abort (124);
3310 /* Same as pushdecl, but define X in binding-level LEVEL. */
3313 pushdecl_with_scope (x
, level
)
3315 struct binding_level
*level
;
3317 register struct binding_level
*b
= current_binding_level
;
3319 current_binding_level
= level
;
3321 current_binding_level
= b
;
3325 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3328 pushdecl_top_level (x
)
3331 register struct binding_level
*b
= inner_binding_level
;
3332 register tree t
= pushdecl_with_scope (x
, global_binding_level
);
3334 /* Now, the type_shadowed stack may screw us. Munge it so it does
3336 if (TREE_CODE (x
) == TYPE_DECL
)
3338 tree name
= DECL_NAME (x
);
3340 tree
*ptr
= (tree
*)0;
3341 for (; b
!= global_binding_level
; b
= b
->level_chain
)
3343 tree shadowed
= b
->type_shadowed
;
3344 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
3345 if (TREE_PURPOSE (shadowed
) == name
)
3347 ptr
= &TREE_VALUE (shadowed
);
3348 /* Can't break out of the loop here because sometimes
3349 a binding level will have duplicate bindings for
3350 PT names. It's gross, but I haven't time to fix it. */
3353 newval
= TREE_TYPE (x
);
3354 if (ptr
== (tree
*)0)
3356 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3357 up here if this is changed to an assertion. --KR */
3358 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
3363 /* Disabled this 11/10/92, since there are many cases which
3364 behave just fine when *ptr doesn't satisfy either of these.
3365 For example, nested classes declared as friends of their enclosing
3366 class will not meet this criteria. (bpk) */
3367 my_friendly_assert (*ptr
== NULL_TREE
|| *ptr
== newval
, 141);
3375 /* Like push_overloaded_decl, only it places X in GLOBAL_BINDING_LEVEL,
3378 push_overloaded_decl_top_level (x
, forget
)
3382 struct binding_level
*b
= current_binding_level
;
3384 current_binding_level
= global_binding_level
;
3385 push_overloaded_decl (x
, forget
);
3386 current_binding_level
= b
;
3389 /* Make the declaration of X appear in CLASS scope. */
3391 pushdecl_class_level (x
)
3394 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3395 scope looks for the pre-mangled name. */
3396 register tree name
= DECL_NAME (x
);
3400 if (TYPE_BEING_DEFINED (current_class_type
))
3402 /* Check for inconsistent use of this name in the class body.
3403 Types, enums, and static vars are checked here; other
3404 members are checked in finish_struct. */
3405 tree icv
= IDENTIFIER_CLASS_VALUE (name
);
3408 /* Don't complain about inherited names. */
3409 && id_in_current_class (name
)
3410 /* Or shadowed tags. */
3411 && !(TREE_CODE (icv
) == TYPE_DECL
3412 && DECL_CONTEXT (icv
) == current_class_type
))
3414 cp_error ("declaration of identifier `%D' as `%#D'", name
, x
);
3415 cp_error_at ("conflicts with previous use in class as `%#D'",
3420 push_class_level_binding (name
, x
);
3421 if (TREE_CODE (x
) == TYPE_DECL
)
3423 set_identifier_type_value (name
, TREE_TYPE (x
));
3425 /* Don't set nested_typename on template type parms, for instance.
3426 Any artificial decls that need DECL_NESTED_TYPENAME will have it
3428 if (! DECL_NESTED_TYPENAME (x
) && ! DECL_ARTIFICIAL (x
))
3429 set_nested_typename (x
, current_class_name
, name
, TREE_TYPE (x
));
3435 /* This function is used to push the mangled decls for nested types into
3436 the appropriate scope. Previously pushdecl_top_level was used, but that
3437 is incorrect for members of local classes. */
3439 pushdecl_nonclass_level (x
)
3442 struct binding_level
*b
= current_binding_level
;
3445 /* Get out of class scope -- this isn't necessary, because class scope
3446 doesn't make it into current_binding_level. */
3447 while (b
->parm_flag
== 2)
3450 my_friendly_assert (b
->parm_flag
!= 2, 180);
3453 /* Get out of template binding levels */
3454 while (b
->pseudo_global
)
3457 pushdecl_with_scope (x
, b
);
3460 /* Make the declaration(s) of X appear in CLASS scope
3461 under the name NAME. */
3463 push_class_level_binding (name
, x
)
3467 if (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3468 && purpose_member (name
, class_binding_level
->class_shadowed
))
3471 maybe_push_cache_obstack ();
3472 class_binding_level
->class_shadowed
3473 = tree_cons (name
, IDENTIFIER_CLASS_VALUE (name
),
3474 class_binding_level
->class_shadowed
);
3476 IDENTIFIER_CLASS_VALUE (name
) = x
;
3477 obstack_ptr_grow (&decl_obstack
, x
);
3480 /* Tell caller how to interpret a TREE_LIST which contains
3481 chains of FUNCTION_DECLS. */
3483 overloaded_globals_p (list
)
3486 my_friendly_assert (TREE_CODE (list
) == TREE_LIST
, 142);
3488 /* Don't commit caller to seeing them as globals. */
3489 if (TREE_NONLOCAL_FLAG (list
))
3491 /* Do commit caller to seeing them as globals. */
3492 if (TREE_CODE (TREE_PURPOSE (list
)) == IDENTIFIER_NODE
)
3494 /* Do commit caller to not seeing them as globals. */
3498 /* DECL is a FUNCTION_DECL which may have other definitions already in
3499 place. We get around this by making the value of the identifier point
3500 to a list of all the things that want to be referenced by that name. It
3501 is then up to the users of that name to decide what to do with that
3504 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3505 slot. It is dealt with the same way.
3507 The value returned may be a previous declaration if we guessed wrong
3508 about what language DECL should belong to (C or C++). Otherwise,
3509 it's always DECL (and never something that's not a _DECL). */
3511 push_overloaded_decl (decl
, forgettable
)
3515 tree orig_name
= DECL_NAME (decl
);
3517 int doing_global
= (global_bindings_p () || ! forgettable
3518 || flag_traditional
|| pseudo_global_level_p ());
3522 old
= IDENTIFIER_GLOBAL_VALUE (orig_name
);
3523 if (old
&& TREE_CODE (old
) == FUNCTION_DECL
3524 && DECL_ARTIFICIAL (old
)
3525 && (DECL_BUILT_IN (old
) || DECL_BUILT_IN_NONANSI (old
)))
3527 if (duplicate_decls (decl
, old
))
3534 old
= IDENTIFIER_LOCAL_VALUE (orig_name
);
3536 if (! purpose_member (orig_name
, current_binding_level
->shadowed
))
3538 current_binding_level
->shadowed
3539 = tree_cons (orig_name
, old
, current_binding_level
->shadowed
);
3547 /* We cache the value of builtin functions as ADDR_EXPRs
3548 in the name space. Convert it to some kind of _DECL after
3549 remembering what to forget. */
3550 if (TREE_CODE (old
) == ADDR_EXPR
)
3551 old
= TREE_OPERAND (old
, 0);
3554 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
3556 tree t
= TREE_TYPE (old
);
3557 if (IS_AGGR_TYPE (t
) && warn_shadow
)
3558 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
3561 else if (is_overloaded_fn (old
))
3565 for (tmp
= get_first_fn (old
); tmp
; tmp
= DECL_CHAIN (tmp
))
3566 if (decl
== tmp
|| duplicate_decls (decl
, tmp
))
3571 cp_error_at ("previous non-function declaration `%#D'", old
);
3572 cp_error ("conflicts with function declaration `%#D'", decl
);
3577 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
3579 if (old
&& is_overloaded_fn (old
))
3580 DECL_CHAIN (decl
) = get_first_fn (old
);
3582 DECL_CHAIN (decl
) = NULL_TREE
;
3583 old
= tree_cons (orig_name
, decl
, NULL_TREE
);
3584 TREE_TYPE (old
) = unknown_type_node
;
3587 /* orig_name is not ambiguous. */
3591 IDENTIFIER_GLOBAL_VALUE (orig_name
) = old
;
3593 IDENTIFIER_LOCAL_VALUE (orig_name
) = old
;
3598 /* Generate an implicit declaration for identifier FUNCTIONID
3599 as a function of type int (). Print a warning if appropriate. */
3602 implicitly_declare (functionid
)
3606 int temp
= allocation_temporary_p ();
3608 push_obstacks_nochange ();
3610 /* Save the decl permanently so we can warn if definition follows.
3611 In ANSI C, warn_implicit is usually false, so the saves little space.
3612 But in C++, it's usually true, hence the extra code. */
3613 if (temp
&& (flag_traditional
|| !warn_implicit
|| toplevel_bindings_p ()))
3614 end_temporary_allocation ();
3616 /* We used to reuse an old implicit decl here,
3617 but this loses with inline functions because it can clobber
3618 the saved decl chains. */
3619 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
3621 DECL_EXTERNAL (decl
) = 1;
3622 TREE_PUBLIC (decl
) = 1;
3624 /* ANSI standard says implicit declarations are in the innermost block.
3625 So we record the decl in the standard fashion.
3626 If flag_traditional is set, pushdecl does it top-level. */
3628 rest_of_decl_compilation (decl
, NULL_PTR
, 0, 0);
3631 /* Only one warning per identifier. */
3632 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
3634 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
3637 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
3644 /* Return zero if the declaration NEWDECL is valid
3645 when the declaration OLDDECL (assumed to be for the same name)
3646 has already been seen.
3647 Otherwise return an error message format string with a %s
3648 where the identifier should go. */
3651 redeclaration_error_message (newdecl
, olddecl
)
3652 tree newdecl
, olddecl
;
3654 if (TREE_CODE (newdecl
) == TYPE_DECL
)
3656 /* Because C++ can put things into name space for free,
3657 constructs like "typedef struct foo { ... } foo"
3658 would look like an erroneous redeclaration. */
3659 if (comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
3662 return "redefinition of `%#D'";
3664 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3666 /* If this is a pure function, its olddecl will actually be
3667 the original initialization to `0' (which we force to call
3668 abort()). Don't complain about redefinition in this case. */
3669 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_ABSTRACT_VIRTUAL_P (olddecl
))
3672 /* We'll complain about linkage mismatches in
3673 warn_extern_redeclared_static. */
3675 /* defining the same name twice is no good. */
3676 if (DECL_INITIAL (olddecl
) != NULL_TREE
3677 && DECL_INITIAL (newdecl
) != NULL_TREE
)
3679 if (DECL_NAME (olddecl
) == NULL_TREE
)
3680 return "`%#D' not declared in class";
3682 return "redefinition of `%#D'";
3686 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
3688 if (DECL_INITIAL (olddecl
) && DECL_INITIAL (newdecl
))
3689 return "redefinition of `%#D'";
3692 else if (current_binding_level
== global_binding_level
)
3694 /* Objects declared at top level: */
3695 /* If at least one is a reference, it's ok. */
3696 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
3698 /* Reject two definitions. */
3699 return "redefinition of `%#D'";
3703 /* Objects declared with block scope: */
3704 /* Reject two definitions, and reject a definition
3705 together with an external reference. */
3706 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
3707 return "redeclaration of `%#D'";
3712 /* Get the LABEL_DECL corresponding to identifier ID as a label.
3713 Create one if none exists so far for the current function.
3714 This function is called for both label definitions and label references. */
3720 register tree decl
= IDENTIFIER_LABEL_VALUE (id
);
3722 if (current_function_decl
== NULL_TREE
)
3724 error ("label `%s' referenced outside of any function",
3725 IDENTIFIER_POINTER (id
));
3729 if ((decl
== NULL_TREE
3730 || DECL_SOURCE_LINE (decl
) == 0)
3731 && (named_label_uses
== NULL_TREE
3732 || TREE_PURPOSE (named_label_uses
) != current_binding_level
->names
3733 || TREE_VALUE (named_label_uses
) != decl
))
3736 = tree_cons (current_binding_level
->names
, decl
, named_label_uses
);
3737 TREE_TYPE (named_label_uses
) = (tree
)current_binding_level
;
3740 /* Use a label already defined or ref'd with this name. */
3741 if (decl
!= NULL_TREE
)
3743 /* But not if it is inherited and wasn't declared to be inheritable. */
3744 if (DECL_CONTEXT (decl
) != current_function_decl
3745 && ! C_DECLARED_LABEL_FLAG (decl
))
3746 return shadow_label (id
);
3750 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
3752 /* A label not explicitly declared must be local to where it's ref'd. */
3753 DECL_CONTEXT (decl
) = current_function_decl
;
3755 DECL_MODE (decl
) = VOIDmode
;
3757 /* Say where one reference is to the label,
3758 for the sake of the error if it is not defined. */
3759 DECL_SOURCE_LINE (decl
) = lineno
;
3760 DECL_SOURCE_FILE (decl
) = input_filename
;
3762 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
3764 named_labels
= tree_cons (NULL_TREE
, decl
, named_labels
);
3765 TREE_VALUE (named_label_uses
) = decl
;
3770 /* Make a label named NAME in the current function,
3771 shadowing silently any that may be inherited from containing functions
3772 or containing scopes.
3774 Note that valid use, if the label being shadowed
3775 comes from another scope in the same function,
3776 requires calling declare_nonlocal_label right away. */
3782 register tree decl
= IDENTIFIER_LABEL_VALUE (name
);
3784 if (decl
!= NULL_TREE
)
3786 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
3787 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
3788 SET_IDENTIFIER_LABEL_VALUE (decl
, NULL_TREE
);
3791 return lookup_label (name
);
3794 /* Define a label, specifying the location in the source file.
3795 Return the LABEL_DECL node for the label, if the definition is valid.
3796 Otherwise return 0. */
3799 define_label (filename
, line
, name
)
3804 tree decl
= lookup_label (name
);
3806 /* After labels, make any new cleanups go into their
3807 own new (temporary) binding contour. */
3808 current_binding_level
->more_cleanups_ok
= 0;
3810 /* If label with this name is known from an outer context, shadow it. */
3811 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) != current_function_decl
)
3813 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
3814 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
3815 decl
= lookup_label (name
);
3818 if (name
== get_identifier ("wchar_t"))
3819 cp_pedwarn ("label named wchar_t");
3821 if (DECL_INITIAL (decl
) != NULL_TREE
)
3823 cp_error ("duplicate label `%D'", decl
);
3831 /* Mark label as having been defined. */
3832 DECL_INITIAL (decl
) = error_mark_node
;
3833 /* Say where in the source. */
3834 DECL_SOURCE_FILE (decl
) = filename
;
3835 DECL_SOURCE_LINE (decl
) = line
;
3837 for (prev
= NULL_TREE
, uses
= named_label_uses
;
3839 prev
= uses
, uses
= TREE_CHAIN (uses
))
3840 if (TREE_VALUE (uses
) == decl
)
3842 struct binding_level
*b
= current_binding_level
;
3845 tree new_decls
= b
->names
;
3846 tree old_decls
= ((tree
)b
== TREE_TYPE (uses
)
3847 ? TREE_PURPOSE (uses
) : NULL_TREE
);
3848 while (new_decls
!= old_decls
)
3850 if (TREE_CODE (new_decls
) == VAR_DECL
3851 /* Don't complain about crossing initialization
3852 of internal entities. They can't be accessed,
3853 and they should be cleaned up
3854 by the time we get to the label. */
3855 && ! DECL_ARTIFICIAL (new_decls
)
3856 && ((DECL_INITIAL (new_decls
) != NULL_TREE
3857 && DECL_INITIAL (new_decls
) != error_mark_node
)
3858 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
3861 cp_error ("jump to label `%D'", decl
);
3863 cp_error_at (" crosses initialization of `%#D'",
3866 new_decls
= TREE_CHAIN (new_decls
);
3868 if ((tree
)b
== TREE_TYPE (uses
))
3874 TREE_CHAIN (prev
) = TREE_CHAIN (uses
);
3876 named_label_uses
= TREE_CHAIN (uses
);
3878 current_function_return_value
= NULL_TREE
;
3885 struct binding_level
*level
;
3886 struct cp_switch
*next
;
3889 static struct cp_switch
*switch_stack
;
3895 = (struct cp_switch
*) oballoc (sizeof (struct cp_switch
));
3896 p
->level
= current_binding_level
;
3897 p
->next
= switch_stack
;
3904 switch_stack
= switch_stack
->next
;
3907 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
3908 /* XXX Note decl is never actually used. (bpk) */
3910 define_case_label (decl
)
3913 tree cleanup
= last_cleanup_this_contour ();
3914 struct binding_level
*b
= current_binding_level
;
3919 static int explained
= 0;
3920 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup
));
3921 warning ("where case label appears here");
3924 warning ("(enclose actions of previous case statements requiring");
3925 warning ("destructors in their own binding contours.)");
3930 for (; b
&& b
!= switch_stack
->level
; b
= b
->level_chain
)
3932 tree new_decls
= b
->names
;
3933 for (; new_decls
; new_decls
= TREE_CHAIN (new_decls
))
3935 if (TREE_CODE (new_decls
) == VAR_DECL
3936 /* Don't complain about crossing initialization
3937 of internal entities. They can't be accessed,
3938 and they should be cleaned up
3939 by the time we get to the label. */
3940 && ! DECL_ARTIFICIAL (new_decls
)
3941 && ((DECL_INITIAL (new_decls
) != NULL_TREE
3942 && DECL_INITIAL (new_decls
) != error_mark_node
)
3943 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
3946 error ("jump to case label");
3948 cp_error_at (" crosses initialization of `%#D'",
3954 /* After labels, make any new cleanups go into their
3955 own new (temporary) binding contour. */
3957 current_binding_level
->more_cleanups_ok
= 0;
3958 current_function_return_value
= NULL_TREE
;
3961 /* Return the list of declarations of the current level.
3962 Note that this list is in reverse order unless/until
3963 you nreverse it; and when you do nreverse it, you must
3964 store the result back using `storedecls' or you will lose. */
3969 return current_binding_level
->names
;
3972 /* Return the list of type-tags (for structs, etc) of the current level. */
3977 return current_binding_level
->tags
;
3980 /* Store the list of declarations of the current level.
3981 This is done for the parameter declarations of a function being defined,
3982 after they are modified in the light of any missing parameters. */
3988 current_binding_level
->names
= decls
;
3991 /* Similarly, store the list of tags of the current level. */
3997 current_binding_level
->tags
= tags
;
4000 /* Given NAME, an IDENTIFIER_NODE,
4001 return the structure (or union or enum) definition for that name.
4002 Searches binding levels from BINDING_LEVEL up to the global level.
4003 If THISLEVEL_ONLY is nonzero, searches only the specified context
4004 (but skips any tag-transparent contexts to find one that is
4005 meaningful for tags).
4006 FORM says which kind of type the caller wants;
4007 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4008 If the wrong kind of type is found, and it's not a template, an error is
4012 lookup_tag (form
, name
, binding_level
, thislevel_only
)
4013 enum tree_code form
;
4014 struct binding_level
*binding_level
;
4018 register struct binding_level
*level
;
4020 for (level
= binding_level
; level
; level
= level
->level_chain
)
4023 if (ANON_AGGRNAME_P (name
))
4024 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4026 /* There's no need for error checking here, because
4027 anon names are unique throughout the compilation. */
4028 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
4029 return TREE_VALUE (tail
);
4032 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4034 if (TREE_PURPOSE (tail
) == name
)
4036 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
4037 /* Should tighten this up; it'll probably permit
4038 UNION_TYPE and a struct template, for example. */
4040 && !(form
!= ENUMERAL_TYPE
4041 && (code
== TEMPLATE_DECL
4042 || code
== UNINSTANTIATED_P_TYPE
)))
4045 /* Definition isn't the kind we were looking for. */
4046 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
4049 return TREE_VALUE (tail
);
4052 if (thislevel_only
&& ! level
->tag_transparent
)
4054 if (current_class_type
&& level
->level_chain
== global_binding_level
)
4056 /* Try looking in this class's tags before heading into
4057 global binding level. */
4058 tree context
= current_class_type
;
4061 switch (TREE_CODE_CLASS (TREE_CODE (context
)))
4065 these_tags
= CLASSTYPE_TAGS (context
);
4066 if (ANON_AGGRNAME_P (name
))
4069 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags
))
4071 return TREE_VALUE (tail
);
4072 these_tags
= TREE_CHAIN (these_tags
);
4077 if (TREE_PURPOSE (these_tags
) == name
)
4079 if (TREE_CODE (TREE_VALUE (these_tags
)) != form
)
4081 cp_error ("`%#D' redeclared as %C in class scope",
4082 TREE_VALUE (tail
), form
);
4084 return TREE_VALUE (tail
);
4086 these_tags
= TREE_CHAIN (these_tags
);
4088 /* If this type is not yet complete, then don't
4089 look at its context. */
4090 if (TYPE_SIZE (context
) == NULL_TREE
)
4092 /* Go to next enclosing type, if any. */
4093 context
= DECL_CONTEXT (TYPE_NAME (context
));
4096 context
= DECL_CONTEXT (context
);
4099 my_friendly_abort (10);
4111 set_current_level_tags_transparency (tags_transparent
)
4112 int tags_transparent
;
4114 current_binding_level
->tag_transparent
= tags_transparent
;
4117 /* Given a type, find the tag that was defined for it and return the tag name.
4118 Otherwise return 0. However, the value can never be 0
4119 in the cases in which this is used.
4121 C++: If NAME is non-zero, this is the new name to install. This is
4122 done when replacing anonymous tags with real tag names. */
4125 lookup_tag_reverse (type
, name
)
4129 register struct binding_level
*level
;
4131 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
4134 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4136 if (TREE_VALUE (tail
) == type
)
4139 TREE_PURPOSE (tail
) = name
;
4140 return TREE_PURPOSE (tail
);
4147 /* Given type TYPE which was not declared in C++ language context,
4148 attempt to find a name by which it is referred. */
4150 typedecl_for_tag (tag
)
4153 struct binding_level
*b
= current_binding_level
;
4155 if (TREE_CODE (TYPE_NAME (tag
)) == TYPE_DECL
)
4156 return TYPE_NAME (tag
);
4160 tree decls
= b
->names
;
4163 if (TREE_CODE (decls
) == TYPE_DECL
&& TREE_TYPE (decls
) == tag
)
4165 decls
= TREE_CHAIN (decls
);
4174 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4175 Return the type value, or NULL_TREE if not found. */
4177 lookup_nested_type (type
, context
)
4181 if (context
== NULL_TREE
)
4185 switch (TREE_CODE (context
))
4189 tree ctype
= TREE_TYPE (context
);
4190 tree match
= value_member (type
, CLASSTYPE_TAGS (ctype
));
4192 return TREE_VALUE (match
);
4193 context
= DECL_CONTEXT (context
);
4195 /* When we have a nested class whose member functions have
4196 local types (e.g., a set of enums), we'll arrive here
4197 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4198 the enclosing class. Instead, we want to make sure we
4199 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4200 if (context
&& TREE_CODE (context
) == RECORD_TYPE
)
4201 context
= TREE_CHAIN (context
);
4205 if (TYPE_NAME (type
) && TYPE_IDENTIFIER (type
))
4206 return lookup_name (TYPE_IDENTIFIER (type
), 1);
4209 my_friendly_abort (12);
4215 /* Look up NAME in the NAMESPACE. */
4217 lookup_namespace_name (namespace, name
)
4218 tree
namespace, name
;
4220 struct binding_level
*b
= (struct binding_level
*)NAMESPACE_LEVEL (namespace);
4223 for (x
= NULL_TREE
; b
&& !x
; b
= b
->level_chain
)
4225 for (x
= b
->names
; x
; x
= TREE_CHAIN (x
))
4226 if (DECL_NAME (x
) == name
|| DECL_ASSEMBLER_NAME (x
) == name
)
4228 /* Must find directly in the namespace. */
4234 /* Look up NAME in the current binding level and its superiors in the
4235 namespace of variables, functions and typedefs. Return a ..._DECL
4236 node of some kind representing its definition if there is only one
4237 such declaration, or return a TREE_LIST with all the overloaded
4238 definitions if there are many, or return 0 if it is undefined.
4240 If PREFER_TYPE is > 0, we prefer TYPE_DECLs.
4241 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4242 Otherwise we prefer non-TYPE_DECLs. */
4245 lookup_name_real (name
, prefer_type
, nonclass
)
4247 int prefer_type
, nonclass
;
4251 tree from_obj
= NULL_TREE
;
4253 if (prefer_type
== -2)
4255 extern int looking_for_typename
;
4259 prefer_type
= looking_for_typename
;
4268 if (type
== error_mark_node
)
4269 return error_mark_node
;
4270 else if (type
== void_type_node
)
4271 val
= IDENTIFIER_GLOBAL_VALUE (name
);
4272 else if (TREE_CODE (type
) == TEMPLATE_TYPE_PARM
4273 /* TFIXME -- don't do this for UPTs in new model. */
4274 || TREE_CODE (type
) == UNINSTANTIATED_P_TYPE
)
4276 if (prefer_type
> 0)
4277 val
= create_nested_upt (type
, name
);
4281 else if (TREE_CODE (type
) == NAMESPACE_DECL
)
4283 val
= lookup_namespace_name (type
, name
);
4285 else if (! IS_AGGR_TYPE (type
))
4286 /* Someone else will give an error about this if needed. */
4288 else if (TYPE_BEING_DEFINED (type
))
4290 val
= IDENTIFIER_CLASS_VALUE (name
);
4291 if (val
&& DECL_CONTEXT (val
) != type
)
4293 struct binding_level
*b
= class_binding_level
;
4294 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
4296 tree t
= purpose_member (name
, b
->class_shadowed
);
4297 if (t
&& TREE_VALUE (t
)
4298 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
4300 val
= TREE_VALUE (t
);
4305 if (val
== NULL_TREE
4306 && CLASSTYPE_LOCAL_TYPEDECLS (type
))
4307 val
= lookup_field (type
, name
, 0, 1);
4309 else if (type
== current_class_type
)
4310 val
= IDENTIFIER_CLASS_VALUE (name
);
4312 val
= lookup_field (type
, name
, 0, prefer_type
);
4320 /* This special lookup only applies to types. */
4321 else if (got_object
&& val
&& TREE_CODE (val
) == TYPE_DECL
)
4325 if (current_binding_level
!= global_binding_level
4326 && IDENTIFIER_LOCAL_VALUE (name
))
4327 val
= IDENTIFIER_LOCAL_VALUE (name
);
4328 /* In C++ class fields are between local and global scope,
4329 just before the global scope. */
4330 else if (current_class_type
&& ! nonclass
)
4332 val
= IDENTIFIER_CLASS_VALUE (name
);
4333 if (val
== NULL_TREE
4334 && TYPE_BEING_DEFINED (current_class_type
)
4335 && CLASSTYPE_LOCAL_TYPEDECLS (current_class_type
))
4336 /* Try to find values from base classes if we are presently
4337 defining a type. We are presently only interested in
4339 val
= lookup_field (current_class_type
, name
, 0, 1);
4341 /* yylex() calls this with -2, since we should never start digging for
4342 the nested name at the point where we haven't even, for example,
4343 created the COMPONENT_REF or anything like that. */
4344 if (val
== NULL_TREE
)
4345 val
= lookup_nested_field (name
, ! yylex
);
4347 if (val
== NULL_TREE
)
4348 val
= IDENTIFIER_GLOBAL_VALUE (name
);
4351 val
= IDENTIFIER_GLOBAL_VALUE (name
);
4356 if (from_obj
&& from_obj
!= val
)
4357 cp_error ("lookup in the scope of `%#T' does not match lookup in the current scope",
4360 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
4361 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
4363 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
4364 val
= TYPE_NAME (IDENTIFIER_TYPE_VALUE (name
));
4365 else if (TREE_TYPE (val
) == error_mark_node
)
4366 val
= error_mark_node
;
4375 lookup_name_nonclass (name
)
4378 return lookup_name_real (name
, 0, 1);
4382 lookup_name (name
, prefer_type
)
4386 return lookup_name_real (name
, prefer_type
, 0);
4389 /* Similar to `lookup_name' but look only at current binding level. */
4392 lookup_name_current_level (name
)
4395 register tree t
= NULL_TREE
;
4397 if (current_binding_level
== global_binding_level
)
4399 t
= IDENTIFIER_GLOBAL_VALUE (name
);
4401 /* extern "C" function() */
4402 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
4405 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
4407 struct binding_level
*b
= current_binding_level
;
4410 for (t
= b
->names
; t
; t
= TREE_CHAIN (t
))
4411 if (DECL_NAME (t
) == name
|| DECL_ASSEMBLER_NAME (t
) == name
)
4425 /* Arrange for the user to get a source line number, even when the
4426 compiler is going down in flames, so that she at least has a
4427 chance of working around problems in the compiler. We used to
4428 call error(), but that let the segmentation fault continue
4429 through; now, it's much more passive by asking them to send the
4430 maintainers mail about the problem. */
4436 signal (SIGSEGV
, SIG_DFL
);
4438 signal (SIGIOT
, SIG_DFL
);
4441 signal (SIGILL
, SIG_DFL
);
4444 signal (SIGABRT
, SIG_DFL
);
4447 signal (SIGBUS
, SIG_DFL
);
4449 my_friendly_abort (0);
4452 /* Array for holding types considered "built-in". These types
4453 are output in the module in which `main' is defined. */
4454 static tree
*builtin_type_tdescs_arr
;
4455 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
4457 /* Push the declarations of builtin types into the namespace.
4458 RID_INDEX, if < RID_MAX is the index of the builtin type
4459 in the array RID_POINTERS. NAME is the name used when looking
4460 up the builtin type. TYPE is the _TYPE node for the builtin type. */
4463 record_builtin_type (rid_index
, name
, type
)
4468 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
4471 if ((int) rid_index
< (int) RID_MAX
)
4472 rname
= ridpointers
[(int) rid_index
];
4474 tname
= get_identifier (name
);
4476 TYPE_BUILT_IN (type
) = 1;
4480 #if 0 /* not yet, should get fixed properly later */
4481 tdecl
= pushdecl (make_type_decl (tname
, type
));
4483 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
4485 set_identifier_type_value (tname
, NULL_TREE
);
4486 if ((int) rid_index
< (int) RID_MAX
)
4487 IDENTIFIER_GLOBAL_VALUE (tname
) = tdecl
;
4489 if (rname
!= NULL_TREE
)
4491 if (tname
!= NULL_TREE
)
4493 set_identifier_type_value (rname
, NULL_TREE
);
4494 IDENTIFIER_GLOBAL_VALUE (rname
) = tdecl
;
4498 #if 0 /* not yet, should get fixed properly later */
4499 tdecl
= pushdecl (make_type_decl (rname
, type
));
4501 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
4503 set_identifier_type_value (rname
, NULL_TREE
);
4509 if (builtin_type_tdescs_len
+5 >= builtin_type_tdescs_max
)
4511 builtin_type_tdescs_max
*= 2;
4512 builtin_type_tdescs_arr
4513 = (tree
*)xrealloc (builtin_type_tdescs_arr
,
4514 builtin_type_tdescs_max
* sizeof (tree
));
4516 builtin_type_tdescs_arr
[builtin_type_tdescs_len
++] = type
;
4517 if (TREE_CODE (type
) != POINTER_TYPE
)
4519 builtin_type_tdescs_arr
[builtin_type_tdescs_len
++]
4520 = build_pointer_type (type
);
4521 builtin_type_tdescs_arr
[builtin_type_tdescs_len
++]
4522 = build_pointer_type (build_type_variant (type
, 1, 0));
4524 if (TREE_CODE (type
) != VOID_TYPE
)
4526 builtin_type_tdescs_arr
[builtin_type_tdescs_len
++]
4527 = build_reference_type (type
);
4528 builtin_type_tdescs_arr
[builtin_type_tdescs_len
++]
4529 = build_reference_type (build_type_variant (type
, 1, 0));
4535 output_builtin_tdesc_entries ()
4537 extern struct obstack permanent_obstack
;
4539 /* If there's more than one main in this file, don't crash. */
4540 if (builtin_type_tdescs_arr
== 0)
4543 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4544 while (builtin_type_tdescs_len
> 0)
4546 tree type
= builtin_type_tdescs_arr
[--builtin_type_tdescs_len
];
4547 tree tdesc
= build_t_desc (type
, 0);
4548 TREE_ASM_WRITTEN (tdesc
) = 0;
4549 build_t_desc (type
, 2);
4551 free (builtin_type_tdescs_arr
);
4552 builtin_type_tdescs_arr
= 0;
4556 /* Push overloaded decl, in global scope, with one argument so it
4557 can be used as a callback from define_function. */
4559 push_overloaded_decl_1 (x
)
4562 push_overloaded_decl (x
, 0);
4565 #define builtin_function(NAME, TYPE, CODE, LIBNAME) \
4566 define_function (NAME, TYPE, CODE, (void (*)())pushdecl, LIBNAME)
4571 tree
auto_function (name
, type
, code
)
4573 enum built_in_function code
;
4575 return define_function
4576 (IDENTIFIER_POINTER (name
), type
, code
, (void (*)())push_overloaded_decl_1
,
4577 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
4581 /* Create the predefined scalar types of C,
4582 and some nodes representing standard constants (0, 1, (void *)0).
4583 Initialize the global binding level.
4584 Make definitions for built-in primitive functions. */
4587 init_decl_processing ()
4590 register tree endlink
, int_endlink
, double_endlink
, ptr_endlink
;
4592 /* Either char* or void*. */
4593 tree traditional_ptr_type_node
;
4594 /* Data type of memcpy. */
4596 #if 0 /* Not yet. */
4597 /* Data type of strncpy. */
4600 int wchar_type_size
;
4602 tree array_domain_type
;
4603 extern int flag_strict_prototype
;
4605 /* Have to make these distinct before we try using them. */
4606 lang_name_cplusplus
= get_identifier ("C++");
4607 lang_name_c
= get_identifier ("C");
4609 if (flag_strict_prototype
== 2)
4612 strict_prototypes_lang_c
= strict_prototypes_lang_cplusplus
;
4615 strict_prototypes_lang_c
= flag_strict_prototype
;
4618 current_lang_name
= lang_name_c
;
4620 current_function_decl
= NULL_TREE
;
4621 named_labels
= NULL_TREE
;
4622 named_label_uses
= NULL_TREE
;
4623 current_binding_level
= NULL_BINDING_LEVEL
;
4624 free_binding_level
= NULL_BINDING_LEVEL
;
4626 /* Because most segmentation signals can be traced back into user
4627 code, catch them and at least give the user a chance of working
4628 around compiler bugs. */
4629 signal (SIGSEGV
, signal_catch
);
4631 /* We will also catch aborts in the back-end through signal_catch and
4632 give the user a chance to see where the error might be, and to defeat
4633 aborts in the back-end when there have been errors previously in their
4636 signal (SIGIOT
, signal_catch
);
4639 signal (SIGILL
, signal_catch
);
4642 signal (SIGABRT
, signal_catch
);
4645 signal (SIGBUS
, signal_catch
);
4648 gcc_obstack_init (&decl_obstack
);
4651 builtin_type_tdescs_max
= 100;
4652 builtin_type_tdescs_arr
= (tree
*)xmalloc (100 * sizeof (tree
));
4655 /* Must lay these out before anything else gets laid out. */
4656 error_mark_node
= make_node (ERROR_MARK
);
4657 TREE_PERMANENT (error_mark_node
) = 1;
4658 TREE_TYPE (error_mark_node
) = error_mark_node
;
4659 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
4660 TREE_TYPE (error_mark_list
) = error_mark_node
;
4662 /* Make the binding_level structure for global names. */
4664 global_binding_level
= current_binding_level
;
4666 this_identifier
= get_identifier (THIS_NAME
);
4667 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
4668 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
4669 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
4670 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
4671 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
4672 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
4674 /* Define `int' and `char' first so that dbx will output them first. */
4676 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
4677 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
4679 /* Define `char', which is like either `signed char' or `unsigned char'
4680 but not the same as either. */
4684 ? make_signed_type (CHAR_TYPE_SIZE
)
4685 : make_unsigned_type (CHAR_TYPE_SIZE
));
4686 record_builtin_type (RID_CHAR
, "char", char_type_node
);
4688 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
4689 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
4691 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
4692 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
4694 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
4695 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
4696 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
4698 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
4699 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
4701 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
4702 record_builtin_type (RID_MAX
, "long long unsigned int",
4703 long_long_unsigned_type_node
);
4704 record_builtin_type (RID_MAX
, "long long unsigned",
4705 long_long_unsigned_type_node
);
4707 /* `unsigned long' is the standard type for sizeof.
4708 Traditionally, use a signed type.
4709 Note that stddef.h uses `unsigned long',
4710 and this must agree, even of long and int are the same size. */
4712 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
)));
4713 if (flag_traditional
&& TREE_UNSIGNED (sizetype
))
4714 sizetype
= signed_type (sizetype
);
4717 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
4719 TREE_TYPE (TYPE_SIZE (integer_type_node
)) = sizetype
;
4720 TREE_TYPE (TYPE_SIZE (char_type_node
)) = sizetype
;
4721 TREE_TYPE (TYPE_SIZE (unsigned_type_node
)) = sizetype
;
4722 TREE_TYPE (TYPE_SIZE (long_unsigned_type_node
)) = sizetype
;
4723 TREE_TYPE (TYPE_SIZE (long_integer_type_node
)) = sizetype
;
4724 TREE_TYPE (TYPE_SIZE (long_long_integer_type_node
)) = sizetype
;
4725 TREE_TYPE (TYPE_SIZE (long_long_unsigned_type_node
)) = sizetype
;
4727 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
4728 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
4729 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
4730 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
4731 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
4733 /* Define both `signed char' and `unsigned char'. */
4734 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
4735 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
4736 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
4737 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
4739 /* These are types that type_for_size and type_for_mode use. */
4740 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
4741 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
4742 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
4743 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
4744 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
4745 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
4746 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
4747 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
4748 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
4749 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
4750 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
4751 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
4752 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
4753 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
4754 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
4755 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
4757 float_type_node
= make_node (REAL_TYPE
);
4758 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
4759 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
4760 layout_type (float_type_node
);
4762 double_type_node
= make_node (REAL_TYPE
);
4763 if (flag_short_double
)
4764 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
4766 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
4767 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
4768 layout_type (double_type_node
);
4770 long_double_type_node
= make_node (REAL_TYPE
);
4771 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
4772 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
4773 layout_type (long_double_type_node
);
4775 integer_zero_node
= build_int_2 (0, 0);
4776 TREE_TYPE (integer_zero_node
) = integer_type_node
;
4777 integer_one_node
= build_int_2 (1, 0);
4778 TREE_TYPE (integer_one_node
) = integer_type_node
;
4779 integer_two_node
= build_int_2 (2, 0);
4780 TREE_TYPE (integer_two_node
) = integer_type_node
;
4781 integer_three_node
= build_int_2 (3, 0);
4782 TREE_TYPE (integer_three_node
) = integer_type_node
;
4784 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
4785 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
4786 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
4787 boolean_false_node
= build_int_2 (0, 0);
4788 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
4789 boolean_true_node
= build_int_2 (1, 0);
4790 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
4792 /* These are needed by stor-layout.c. */
4793 size_zero_node
= size_int (0);
4794 size_one_node
= size_int (1);
4796 void_type_node
= make_node (VOID_TYPE
);
4797 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
4798 layout_type (void_type_node
); /* Uses integer_zero_node. */
4799 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
4800 TREE_PARMLIST (void_list_node
) = 1;
4802 null_pointer_node
= build_int_2 (0, 0);
4803 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
4804 layout_type (TREE_TYPE (null_pointer_node
));
4806 /* Used for expressions that do nothing, but are not errors. */
4807 void_zero_node
= build_int_2 (0, 0);
4808 TREE_TYPE (void_zero_node
) = void_type_node
;
4810 string_type_node
= build_pointer_type (char_type_node
);
4811 const_string_type_node
=
4812 build_pointer_type (build_type_variant (char_type_node
, 1, 0));
4813 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
4815 /* Make a type to be the domain of a few array types
4816 whose domains don't really matter.
4817 200 is small enough that it always fits in size_t
4818 and large enough that it can hold most function names for the
4819 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
4820 array_domain_type
= build_index_type (build_int_2 (200, 0));
4822 /* make a type for arrays of characters.
4823 With luck nothing will ever really depend on the length of this
4825 char_array_type_node
4826 = build_array_type (char_type_node
, array_domain_type
);
4827 /* Likewise for arrays of ints. */
4829 = build_array_type (integer_type_node
, array_domain_type
);
4831 /* This is just some anonymous class type. Nobody should ever
4832 need to look inside this envelope. */
4833 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
4835 default_function_type
4836 = build_function_type (integer_type_node
, NULL_TREE
);
4837 build_pointer_type (default_function_type
);
4839 ptr_type_node
= build_pointer_type (void_type_node
);
4840 const_ptr_type_node
=
4841 build_pointer_type (build_type_variant (void_type_node
, 1, 0));
4842 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
4843 endlink
= void_list_node
;
4844 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
4845 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
4846 ptr_endlink
= tree_cons (NULL_TREE
, ptr_type_node
, endlink
);
4849 = build_function_type (double_type_node
, double_endlink
);
4851 double_ftype_double_double
4852 = build_function_type (double_type_node
,
4853 tree_cons (NULL_TREE
, double_type_node
,
4857 = build_function_type (integer_type_node
, int_endlink
);
4860 = build_function_type (long_integer_type_node
,
4861 tree_cons (NULL_TREE
, long_integer_type_node
,
4864 void_ftype_ptr_ptr_int
4865 = build_function_type (void_type_node
,
4866 tree_cons (NULL_TREE
, ptr_type_node
,
4867 tree_cons (NULL_TREE
, ptr_type_node
,
4870 int_ftype_cptr_cptr_sizet
4871 = build_function_type (integer_type_node
,
4872 tree_cons (NULL_TREE
, const_ptr_type_node
,
4873 tree_cons (NULL_TREE
, const_ptr_type_node
,
4874 tree_cons (NULL_TREE
,
4878 void_ftype_ptr_int_int
4879 = build_function_type (void_type_node
,
4880 tree_cons (NULL_TREE
, ptr_type_node
,
4881 tree_cons (NULL_TREE
, integer_type_node
,
4884 string_ftype_ptr_ptr
/* strcpy prototype */
4885 = build_function_type (string_type_node
,
4886 tree_cons (NULL_TREE
, string_type_node
,
4887 tree_cons (NULL_TREE
,
4888 const_string_type_node
,
4893 strncpy_ftype
/* strncpy prototype */
4894 = build_function_type (string_type_node
,
4895 tree_cons (NULL_TREE
, string_type_node
,
4896 tree_cons (NULL_TREE
, const_string_type_node
,
4897 tree_cons (NULL_TREE
,
4902 int_ftype_string_string
/* strcmp prototype */
4903 = build_function_type (integer_type_node
,
4904 tree_cons (NULL_TREE
, const_string_type_node
,
4905 tree_cons (NULL_TREE
,
4906 const_string_type_node
,
4909 sizet_ftype_string
/* strlen prototype */
4910 = build_function_type (sizetype
,
4911 tree_cons (NULL_TREE
, const_string_type_node
,
4914 traditional_ptr_type_node
4915 = (flag_traditional
? string_type_node
: ptr_type_node
);
4917 memcpy_ftype
/* memcpy prototype */
4918 = build_function_type (traditional_ptr_type_node
,
4919 tree_cons (NULL_TREE
, ptr_type_node
,
4920 tree_cons (NULL_TREE
, const_ptr_type_node
,
4921 tree_cons (NULL_TREE
,
4925 if (flag_huge_objects
)
4926 delta_type_node
= long_integer_type_node
;
4928 delta_type_node
= short_integer_type_node
;
4930 builtin_function ("__builtin_constant_p", int_ftype_int
,
4931 BUILT_IN_CONSTANT_P
, NULL_PTR
);
4933 builtin_return_address_fndecl
=
4934 builtin_function ("__builtin_return_address",
4935 build_function_type (ptr_type_node
,
4936 tree_cons (NULL_TREE
,
4939 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
4941 builtin_function ("__builtin_frame_address",
4942 build_function_type (ptr_type_node
,
4943 tree_cons (NULL_TREE
,
4946 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
4949 builtin_function ("__builtin_alloca",
4950 build_function_type (ptr_type_node
,
4951 tree_cons (NULL_TREE
,
4954 BUILT_IN_ALLOCA
, "alloca");
4955 /* Define alloca, ffs as builtins.
4956 Declare _exit just to mark it as volatile. */
4957 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
4959 temp
= builtin_function ("alloca",
4960 build_function_type (ptr_type_node
,
4961 tree_cons (NULL_TREE
,
4964 BUILT_IN_ALLOCA
, NULL_PTR
);
4965 /* Suppress error if redefined as a non-function. */
4966 DECL_BUILT_IN_NONANSI (temp
) = 1;
4967 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
4968 /* Suppress error if redefined as a non-function. */
4969 DECL_BUILT_IN_NONANSI (temp
) = 1;
4970 temp
= builtin_function ("_exit", build_function_type (void_type_node
,
4972 NOT_BUILT_IN
, NULL_PTR
);
4973 TREE_THIS_VOLATILE (temp
) = 1;
4974 TREE_SIDE_EFFECTS (temp
) = 1;
4975 /* Suppress error if redefined as a non-function. */
4976 DECL_BUILT_IN_NONANSI (temp
) = 1;
4979 builtin_function ("__builtin_abs", int_ftype_int
,
4980 BUILT_IN_ABS
, NULL_PTR
);
4981 builtin_function ("__builtin_fabs", double_ftype_double
,
4982 BUILT_IN_FABS
, NULL_PTR
);
4983 builtin_function ("__builtin_labs", long_ftype_long
,
4984 BUILT_IN_LABS
, NULL_PTR
);
4985 builtin_function ("__builtin_ffs", int_ftype_int
,
4986 BUILT_IN_FFS
, NULL_PTR
);
4987 builtin_function ("__builtin_fsqrt", double_ftype_double
,
4988 BUILT_IN_FSQRT
, NULL_PTR
);
4989 builtin_function ("__builtin_sin", double_ftype_double
,
4990 BUILT_IN_SIN
, "sin");
4991 builtin_function ("__builtin_cos", double_ftype_double
,
4992 BUILT_IN_COS
, "cos");
4993 builtin_function ("__builtin_saveregs",
4994 build_function_type (ptr_type_node
, NULL_TREE
),
4995 BUILT_IN_SAVEREGS
, NULL_PTR
);
4996 /* EXPAND_BUILTIN_VARARGS is obsolete. */
4998 builtin_function ("__builtin_varargs",
4999 build_function_type (ptr_type_node
,
5000 tree_cons (NULL_TREE
,
5003 BUILT_IN_VARARGS
, NULL_PTR
);
5005 builtin_function ("__builtin_classify_type", default_function_type
,
5006 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
5007 builtin_function ("__builtin_next_arg",
5008 build_function_type (ptr_type_node
, NULL_TREE
),
5009 BUILT_IN_NEXT_ARG
, NULL_PTR
);
5010 builtin_function ("__builtin_args_info",
5011 build_function_type (integer_type_node
,
5012 tree_cons (NULL_TREE
,
5015 BUILT_IN_ARGS_INFO
, NULL_PTR
);
5017 /* Untyped call and return. */
5018 builtin_function ("__builtin_apply_args",
5019 build_function_type (ptr_type_node
, NULL_TREE
),
5020 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
5022 temp
= tree_cons (NULL_TREE
,
5023 build_pointer_type (build_function_type (void_type_node
,
5025 tree_cons (NULL_TREE
,
5027 tree_cons (NULL_TREE
,
5030 builtin_function ("__builtin_apply",
5031 build_function_type (ptr_type_node
, temp
),
5032 BUILT_IN_APPLY
, NULL_PTR
);
5033 builtin_function ("__builtin_return",
5034 build_function_type (void_type_node
,
5035 tree_cons (NULL_TREE
,
5038 BUILT_IN_RETURN
, NULL_PTR
);
5040 /* Currently under experimentation. */
5041 builtin_function ("__builtin_memcpy", memcpy_ftype
,
5042 BUILT_IN_MEMCPY
, "memcpy");
5043 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
5044 BUILT_IN_MEMCMP
, "memcmp");
5045 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
5046 BUILT_IN_STRCMP
, "strcmp");
5047 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
5048 BUILT_IN_STRCPY
, "strcpy");
5051 builtin_function ("__builtin_strncpy", strncpy_ftype
,
5052 BUILT_IN_STRNCPY
, "strncpy");
5054 builtin_function ("__builtin_strlen", sizet_ftype_string
,
5055 BUILT_IN_STRLEN
, "strlen");
5057 if (!flag_no_builtin
)
5059 #if 0 /* These do not work well with libg++. */
5060 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5061 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
5062 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
5064 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
5065 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
5067 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
, NULL_PTR
);
5068 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
5072 builtin_function ("strncpy", strncpy_ftype
, BUILT_IN_STRNCPY
, NULL_PTR
);
5074 builtin_function ("strlen", sizet_ftype_string
, BUILT_IN_STRLEN
, NULL_PTR
);
5075 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
5076 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
5078 /* Declare these functions volatile
5079 to avoid spurious "control drops through" warnings. */
5080 temp
= builtin_function ("abort",
5081 build_function_type (void_type_node
, endlink
),
5082 NOT_BUILT_IN
, NULL_PTR
);
5083 TREE_THIS_VOLATILE (temp
) = 1;
5084 TREE_SIDE_EFFECTS (temp
) = 1;
5085 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
5087 DECL_BUILT_IN_NONANSI (temp
) = 1;
5088 temp
= builtin_function ("exit", build_function_type (void_type_node
,
5090 NOT_BUILT_IN
, NULL_PTR
);
5091 TREE_THIS_VOLATILE (temp
) = 1;
5092 TREE_SIDE_EFFECTS (temp
) = 1;
5093 DECL_BUILT_IN_NONANSI (temp
) = 1;
5097 /* Support for these has not been written in either expand_builtin
5098 or build_function_call. */
5099 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, 0);
5100 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, 0);
5101 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
5103 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
, 0);
5104 builtin_function ("__builtin_fmod", double_ftype_double_double
,
5106 builtin_function ("__builtin_frem", double_ftype_double_double
,
5108 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
, BUILT_IN_MEMSET
,
5110 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
5112 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
5116 /* C++ extensions */
5118 unknown_type_node
= make_node (UNKNOWN_TYPE
);
5119 #if 0 /* not yet, should get fixed properly later */
5120 pushdecl (make_type_decl (get_identifier ("unknown type"),
5121 unknown_type_node
));
5123 decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier ("unknown type"),
5124 unknown_type_node
));
5125 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5126 DECL_IGNORED_P (decl
) = 1;
5127 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5129 TYPE_SIZE (unknown_type_node
) = TYPE_SIZE (void_type_node
);
5130 TYPE_ALIGN (unknown_type_node
) = 1;
5131 TYPE_MODE (unknown_type_node
) = TYPE_MODE (void_type_node
);
5132 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
5133 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
5134 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same result. */
5135 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
5136 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
5138 /* This is for handling opaque types in signatures. */
5139 opaque_type_node
= copy_node (ptr_type_node
);
5140 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
5141 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
5143 /* This is special for C++ so functions can be overloaded. */
5145 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
5146 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
5147 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
5148 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
5150 = TREE_UNSIGNED (wchar_type_node
)
5151 ? unsigned_wchar_type_node
5152 : signed_wchar_type_node
;
5153 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
5155 /* Artificial declaration of wchar_t -- can be bashed */
5156 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
5158 pushdecl (wchar_decl_node
);
5160 /* This is for wide string constants. */
5161 wchar_array_type_node
5162 = build_array_type (wchar_type_node
, array_domain_type
);
5164 /* This is a hack that should go away when we deliver the
5168 builtin_function ("__gc_main", default_function_type
, NOT_BUILT_IN
, 0);
5169 pushdecl (lookup_name (get_identifier ("__gc_main"), 0));
5172 if (flag_vtable_thunks
)
5174 /* Make sure we get a unique function type, so we can give
5175 its pointer type a name. (This wins for gdb.) */
5176 tree vfunc_type
= make_node (FUNCTION_TYPE
);
5177 TREE_TYPE (vfunc_type
) = integer_type_node
;
5178 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
5179 layout_type (vfunc_type
);
5181 vtable_entry_type
= build_pointer_type (vfunc_type
);
5185 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
5186 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
5188 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
5190 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
5192 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
5195 /* Make this part of an invisible union. */
5196 fields
[3] = copy_node (fields
[2]);
5197 TREE_TYPE (fields
[3]) = delta_type_node
;
5198 DECL_NAME (fields
[3]) = delta2_identifier
;
5199 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
5200 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
5201 TREE_UNSIGNED (fields
[3]) = 0;
5202 TREE_CHAIN (fields
[2]) = fields
[3];
5203 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
5205 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
5208 = build_array_type (vtable_entry_type
, NULL_TREE
);
5209 layout_type (vtbl_type_node
);
5210 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
5211 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
5213 /* Simplify life by making a "sigtable_entry_type". Give its
5214 fields names so that the debugger can use them. */
5216 if (flag_handle_signatures
)
5218 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
5219 fields
[0] = build_lang_field_decl (FIELD_DECL
,
5220 get_identifier (SIGTABLE_CODE_NAME
),
5221 short_integer_type_node
);
5222 fields
[1] = build_lang_field_decl (FIELD_DECL
,
5223 get_identifier (SIGTABLE_OFFSET_NAME
),
5224 short_integer_type_node
);
5225 fields
[2] = build_lang_field_decl (FIELD_DECL
,
5226 get_identifier (SIGTABLE_PFN_NAME
),
5228 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 2,
5230 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
5231 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
5237 /* Must build __t_desc type. Currently, type descriptors look like this:
5244 struct __t_desc *points_to;
5245 int ivars_count, meths_count;
5246 struct __i_desc *ivars[];
5247 struct __m_desc *meths[];
5248 struct __t_desc *parents[];
5249 struct __t_desc *vbases[];
5253 ...as per Linton's paper. */
5255 __t_desc_type_node
= make_lang_type (RECORD_TYPE
);
5256 __i_desc_type_node
= make_lang_type (RECORD_TYPE
);
5257 __m_desc_type_node
= make_lang_type (RECORD_TYPE
);
5258 __t_desc_array_type
=
5259 build_array_type (TYPE_POINTER_TO (__t_desc_type_node
), NULL_TREE
);
5260 __i_desc_array_type
=
5261 build_array_type (TYPE_POINTER_TO (__i_desc_type_node
), NULL_TREE
);
5262 __m_desc_array_type
=
5263 build_array_type (TYPE_POINTER_TO (__m_desc_type_node
), NULL_TREE
);
5265 fields
[0] = build_lang_field_decl (FIELD_DECL
, get_identifier ("name"),
5267 fields
[1] = build_lang_field_decl (FIELD_DECL
, get_identifier ("size"),
5268 unsigned_type_node
);
5269 fields
[2] = build_lang_field_decl (FIELD_DECL
, get_identifier ("bits"),
5270 unsigned_type_node
);
5271 fields
[3] = build_lang_field_decl (FIELD_DECL
,
5272 get_identifier ("points_to"),
5273 TYPE_POINTER_TO (__t_desc_type_node
));
5274 fields
[4] = build_lang_field_decl (FIELD_DECL
,
5275 get_identifier ("ivars_count"),
5277 fields
[5] = build_lang_field_decl (FIELD_DECL
,
5278 get_identifier ("meths_count"),
5280 fields
[6] = build_lang_field_decl (FIELD_DECL
, get_identifier ("ivars"),
5281 build_pointer_type (__i_desc_array_type
));
5282 fields
[7] = build_lang_field_decl (FIELD_DECL
, get_identifier ("meths"),
5283 build_pointer_type (__m_desc_array_type
));
5284 fields
[8] = build_lang_field_decl (FIELD_DECL
, get_identifier ("parents"),
5285 build_pointer_type (__t_desc_array_type
));
5286 fields
[9] = build_lang_field_decl (FIELD_DECL
, get_identifier ("vbases"),
5287 build_pointer_type (__t_desc_array_type
));
5288 fields
[10] = build_lang_field_decl (FIELD_DECL
, get_identifier ("offsets"),
5289 build_pointer_type (integer_type_node
));
5290 finish_builtin_type (__t_desc_type_node
, "__t_desc", fields
, 10, integer_type_node
);
5292 /* ivar descriptors look like this:
5298 struct __t_desc *type;
5302 fields
[0] = build_lang_field_decl (FIELD_DECL
, get_identifier ("name"),
5304 fields
[1] = build_lang_field_decl (FIELD_DECL
, get_identifier ("offset"),
5306 fields
[2] = build_lang_field_decl (FIELD_DECL
, get_identifier ("type"),
5307 TYPE_POINTER_TO (__t_desc_type_node
));
5308 finish_builtin_type (__i_desc_type_node
, "__i_desc", fields
, 2,
5311 /* method descriptors look like this:
5317 struct __t_desc *vcontext;
5318 struct __t_desc *return_type;
5321 short required_parms;
5322 struct __t_desc *parm_types[];
5326 fields
[0] = build_lang_field_decl (FIELD_DECL
, get_identifier ("name"),
5328 fields
[1] = build_lang_field_decl (FIELD_DECL
, get_identifier ("vindex"),
5330 fields
[2] = build_lang_field_decl (FIELD_DECL
, get_identifier ("vcontext"),
5331 TYPE_POINTER_TO (__t_desc_type_node
));
5332 fields
[3] = build_lang_field_decl (FIELD_DECL
, get_identifier ("return_type"),
5333 TYPE_POINTER_TO (__t_desc_type_node
));
5334 fields
[4] = build_lang_field_decl (FIELD_DECL
, get_identifier ("address"),
5335 build_pointer_type (default_function_type
));
5336 fields
[5] = build_lang_field_decl (FIELD_DECL
, get_identifier ("parm_count"),
5337 short_integer_type_node
);
5338 fields
[6] = build_lang_field_decl (FIELD_DECL
, get_identifier ("required_parms"),
5339 short_integer_type_node
);
5340 fields
[7] = build_lang_field_decl (FIELD_DECL
, get_identifier ("parm_types"),
5341 build_pointer_type (build_array_type (TYPE_POINTER_TO (__t_desc_type_node
), NULL_TREE
)));
5342 finish_builtin_type (__m_desc_type_node
, "__m_desc", fields
, 7,
5348 int i
= builtin_type_tdescs_len
;
5351 tree tdesc
= build_t_desc (builtin_type_tdescs_arr
[--i
], 0);
5352 TREE_ASM_WRITTEN (tdesc
) = 1;
5353 TREE_PUBLIC (TREE_OPERAND (tdesc
, 0)) = 1;
5356 #endif /*flag_rtti*/
5359 current_lang_name
= lang_name_cplusplus
;
5361 auto_function (ansi_opname
[(int) NEW_EXPR
],
5362 build_function_type (ptr_type_node
,
5363 tree_cons (NULL_TREE
, sizetype
,
5366 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
],
5367 build_function_type (ptr_type_node
,
5368 tree_cons (NULL_TREE
, sizetype
,
5371 auto_function (ansi_opname
[(int) DELETE_EXPR
],
5372 build_function_type (void_type_node
,
5373 tree_cons (NULL_TREE
, ptr_type_node
,
5376 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
],
5377 build_function_type (void_type_node
,
5378 tree_cons (NULL_TREE
, ptr_type_node
,
5383 = define_function ("__pure_virtual",
5384 build_function_type (void_type_node
, void_list_node
),
5385 NOT_BUILT_IN
, 0, 0);
5387 /* Perform other language dependent initializations. */
5388 init_class_processing ();
5389 init_init_processing ();
5390 init_search_processing ();
5392 if (flag_handle_exceptions
)
5393 init_exception_processing ();
5395 init_gc_processing ();
5398 flag_inline_functions
= 0;
5400 /* This causes unnecessary emission of inline functions. */
5401 flag_default_inline
= 0;
5407 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
5408 declare_function_name ();
5410 /* Prepare to check format strings against argument lists. */
5411 init_function_format_info ();
5414 /* initialize type descriptor type node of various rtti type. */
5421 tdecl
= lookup_name (get_identifier ("type_info"), 0);
5422 if (tdecl
== NULL_TREE
)
5424 __t_desc_type_node
= TREE_TYPE(tdecl
);
5425 __tp_desc_type_node
= build_pointer_type (__t_desc_type_node
);
5428 tdecl
= lookup_name (get_identifier ("__baselist_type_info"), 0);
5429 if (tdecl
== NULL_TREE
)
5431 __baselist_desc_type_node
= TREE_TYPE (tdecl
);
5434 tdecl
= lookup_name (get_identifier ("__builtin_type_info"), 0);
5435 if (tdecl
== NULL_TREE
)
5437 __bltn_desc_type_node
= TREE_TYPE (tdecl
);
5439 tdecl
= lookup_name (get_identifier ("__user_type_info"), 0);
5440 if (tdecl
== NULL_TREE
)
5442 __user_desc_type_node
= TREE_TYPE (tdecl
);
5444 tdecl
= lookup_name (get_identifier ("__class_type_info"), 0);
5445 if (tdecl
== NULL_TREE
)
5447 __class_desc_type_node
= TREE_TYPE (tdecl
);
5449 tdecl
= lookup_field (__class_desc_type_node
,
5450 get_identifier ("access_mode"), 0, 0);
5451 if (tdecl
== NULL_TREE
)
5453 __access_mode_type_node
= TREE_TYPE (tdecl
);
5455 tdecl
= lookup_name (get_identifier ("__attr_type_info"), 0);
5456 if (tdecl
== NULL_TREE
)
5458 __attr_desc_type_node
= TREE_TYPE (tdecl
);
5460 tdecl
= lookup_name (get_identifier ("__pointer_type_info"), 0);
5461 if (tdecl
== NULL_TREE
)
5463 __ptr_desc_type_node
= TREE_TYPE (tdecl
);
5465 tdecl
= lookup_name (get_identifier ("__func_type_info"), 0);
5466 if (tdecl
== NULL_TREE
)
5468 __func_desc_type_node
= TREE_TYPE (tdecl
);
5470 tdecl
= lookup_name (get_identifier ("__ptmf_type_info"), 0);
5471 if (tdecl
== NULL_TREE
)
5473 __ptmf_desc_type_node
= TREE_TYPE (tdecl
);
5475 tdecl
= lookup_name (get_identifier ("__ptmd_type_info"), 0);
5476 if (tdecl
== NULL_TREE
)
5478 __ptmd_desc_type_node
= TREE_TYPE (tdecl
);
5482 /* Make a definition for a builtin function named NAME and whose data type
5483 is TYPE. TYPE should be a function type with argument types.
5484 FUNCTION_CODE tells later passes how to compile calls to this function.
5485 See tree.h for its possible values.
5487 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
5488 the name to be called if we can't opencode the function. */
5491 define_function (name
, type
, function_code
, pfn
, library_name
)
5494 enum built_in_function function_code
;
5498 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
5499 DECL_EXTERNAL (decl
) = 1;
5500 TREE_PUBLIC (decl
) = 1;
5501 DECL_INTERFACE_KNOWN (decl
) = 1;
5502 DECL_ARTIFICIAL (decl
) = 1;
5504 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
5505 we cannot change DECL_ASSEMBLER_NAME until we have installed this
5506 function in the namespace. */
5507 if (pfn
) (*pfn
) (decl
);
5509 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
5510 make_function_rtl (decl
);
5511 if (function_code
!= NOT_BUILT_IN
)
5513 DECL_BUILT_IN (decl
) = 1;
5514 DECL_FUNCTION_CODE (decl
) = function_code
;
5519 /* Called when a declaration is seen that contains no names to declare.
5520 If its type is a reference to a structure, union or enum inherited
5521 from a containing scope, shadow that tag name for the current scope
5522 with a forward reference.
5523 If its type defines a new named structure or union
5524 or defines an enum, it is valid but we need not do anything here.
5525 Otherwise, it is an error.
5527 C++: may have to grok the declspecs to learn about static,
5528 complain for anonymous unions. */
5531 shadow_tag (declspecs
)
5535 tree ob_modifier
= NULL_TREE
;
5537 register enum tree_code code
, ok_code
= ERROR_MARK
;
5538 register tree t
= NULL_TREE
;
5540 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
5542 register tree value
= TREE_VALUE (link
);
5544 code
= TREE_CODE (value
);
5545 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
5547 my_friendly_assert (TYPE_NAME (value
) != NULL_TREE
, 261);
5549 if (code
== ENUMERAL_TYPE
&& TYPE_SIZE (value
) == 0)
5550 cp_error ("forward declaration of `%#T'", value
);
5556 else if (value
== ridpointers
[(int) RID_STATIC
]
5557 || value
== ridpointers
[(int) RID_EXTERN
]
5558 || value
== ridpointers
[(int) RID_AUTO
]
5559 || value
== ridpointers
[(int) RID_REGISTER
]
5560 || value
== ridpointers
[(int) RID_INLINE
]
5561 || value
== ridpointers
[(int) RID_VIRTUAL
]
5562 || value
== ridpointers
[(int) RID_EXPLICIT
])
5563 ob_modifier
= value
;
5566 /* This is where the variables in an anonymous union are
5567 declared. An anonymous union declaration looks like:
5569 because there is no declarator after the union, the parser
5570 sends that declaration here. */
5571 if (ok_code
== UNION_TYPE
5573 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
5574 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
5575 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
5576 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
5578 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
5579 function members. */
5580 if (TYPE_FIELDS (t
))
5582 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
5584 finish_anon_union (decl
);
5587 error ("anonymous union cannot have a function member");
5591 /* Anonymous unions are objects, that's why we only check for
5592 inappropriate specifiers in this branch. */
5596 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
5597 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
5598 cp_error ("`%D' can only be specified for functions", ob_modifier
);
5599 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
5600 cp_error ("`%D' can only be specified for constructors",
5603 cp_error ("`%D' can only be specified for objects and functions",
5608 pedwarn ("abstract declarator used as declaration");
5609 else if (found_tag
> 1)
5610 pedwarn ("multiple types in one declaration");
5614 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
5617 groktypename (typename
)
5620 if (TREE_CODE (typename
) != TREE_LIST
)
5622 return grokdeclarator (TREE_VALUE (typename
),
5623 TREE_PURPOSE (typename
),
5624 TYPENAME
, 0, NULL_TREE
);
5627 /* Decode a declarator in an ordinary declaration or data definition.
5628 This is called as soon as the type information and variable name
5629 have been parsed, before parsing the initializer if any.
5630 Here we create the ..._DECL node, fill in its type,
5631 and put it on the list of decls for the current context.
5632 The ..._DECL node is returned as the value.
5634 Exception: for arrays where the length is not specified,
5635 the type is left null, to be filled in by `cp_finish_decl'.
5637 Function definitions do not come here; they go to start_function
5638 instead. However, external and forward declarations of functions
5639 do go through here. Structure field declarations are done by
5640 grokfield and not through here. */
5642 /* Set this to zero to debug not using the temporary obstack
5643 to parse initializers. */
5644 int debug_temp_inits
= 1;
5647 start_decl (declarator
, declspecs
, initialized
, raises
)
5648 tree declarator
, declspecs
;
5653 register tree type
, tem
;
5655 extern int have_extern_spec
;
5656 extern int used_extern_spec
;
5658 int init_written
= initialized
;
5660 /* This should only be done once on the top most decl. */
5661 if (have_extern_spec
&& !used_extern_spec
)
5663 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
5665 used_extern_spec
= 1;
5668 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
, raises
);
5669 if (decl
== NULL_TREE
|| decl
== void_type_node
)
5672 type
= TREE_TYPE (decl
);
5674 /* Don't lose if destructors must be executed at file-level. */
5675 if (TREE_STATIC (decl
)
5676 && TYPE_NEEDS_DESTRUCTOR (type
)
5677 && !TREE_PERMANENT (decl
))
5679 push_obstacks (&permanent_obstack
, &permanent_obstack
);
5680 decl
= copy_node (decl
);
5681 if (TREE_CODE (type
) == ARRAY_TYPE
)
5683 tree itype
= TYPE_DOMAIN (type
);
5684 if (itype
&& ! TREE_PERMANENT (itype
))
5686 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
5687 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
5688 TREE_TYPE (decl
) = type
;
5694 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
5695 push_obstacks_nochange ();
5698 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
5699 ? DECL_CLASS_CONTEXT (decl
)
5700 : DECL_CONTEXT (decl
);
5702 if (processing_template_decl
)
5705 if (TREE_CODE (decl
) == FUNCTION_DECL
)
5707 /* Declarator is a call_expr; extract arguments from it, since
5708 grokdeclarator didn't do it. */
5710 args
= copy_to_permanent (last_function_parms
);
5711 if (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
5713 tree t
= TREE_TYPE (decl
);
5715 t
= TYPE_METHOD_BASETYPE (t
); /* type method belongs to */
5716 if (TREE_CODE (t
) != UNINSTANTIATED_P_TYPE
)
5718 t
= build_pointer_type (t
); /* base type of `this' */
5720 /* I suspect this is wrong. */
5721 t
= build_type_variant (t
, flag_this_is_variable
<= 0,
5722 0); /* type of `this' */
5724 t
= build_type_variant (t
, 0, 0); /* type of `this' */
5726 t
= build (PARM_DECL
, t
, this_identifier
);
5727 TREE_CHAIN (t
) = args
;
5731 DECL_ARGUMENTS (decl
) = args
;
5733 d
= build_lang_decl (TEMPLATE_DECL
, DECL_NAME (decl
), TREE_TYPE (decl
));
5734 TREE_PUBLIC (d
) = TREE_PUBLIC (decl
);
5735 TREE_STATIC (d
) = TREE_STATIC (decl
);
5736 DECL_EXTERNAL (d
) = (DECL_EXTERNAL (decl
)
5737 && !(context
&& !DECL_THIS_EXTERN (decl
)));
5738 DECL_TEMPLATE_RESULT (d
) = decl
;
5742 /* If this type of object needs a cleanup, and control may
5743 jump past it, make a new binding level so that it is cleaned
5744 up only when it is initialized first. */
5745 if (TYPE_NEEDS_DESTRUCTOR (type
)
5746 && current_binding_level
->more_cleanups_ok
== 0)
5747 pushlevel_temporary (1);
5750 /* Is it valid for this decl to have an initializer at all?
5751 If not, set INITIALIZED to zero, which will indirectly
5752 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
5753 switch (TREE_CODE (decl
))
5756 /* typedef foo = bar means give foo the same type as bar.
5757 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
5758 Any other case of an initialization in a TYPE_DECL is an error. */
5759 if (pedantic
|| list_length (declspecs
) > 1)
5761 cp_error ("typedef `%D' is initialized", decl
);
5767 cp_error ("function `%#D' is initialized like a variable", decl
);
5772 /* Don't allow initializations for incomplete types except for
5773 arrays which might be completed by the initialization. */
5774 if (type
== error_mark_node
)
5775 ; /* Don't complain again. */
5776 else if (TYPE_SIZE (type
) != NULL_TREE
)
5777 ; /* A complete type is ok. */
5778 else if (TREE_CODE (type
) != ARRAY_TYPE
)
5780 cp_error ("variable `%#D' has initializer but incomplete type",
5784 else if (TYPE_SIZE (TREE_TYPE (type
)) == NULL_TREE
)
5786 cp_error ("elements of array `%#D' have incomplete type", decl
);
5792 && TREE_CODE (decl
) != TYPE_DECL
5793 && TREE_CODE (decl
) != TEMPLATE_DECL
5794 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
5796 if (TYPE_SIZE (type
) == NULL_TREE
)
5798 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
5800 /* Change the type so that assemble_variable will give
5801 DECL an rtl we can live with: (mem (const_int 0)). */
5802 TREE_TYPE (decl
) = error_mark_node
;
5803 type
= error_mark_node
;
5807 /* If any base type in the hierarchy of TYPE needs a constructor,
5808 then we set initialized to 1. This way any nodes which are
5809 created for the purposes of initializing this aggregate
5810 will live as long as it does. This is necessary for global
5811 aggregates which do not have their initializers processed until
5812 the end of the file. */
5813 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
5819 if (! toplevel_bindings_p ()
5820 && DECL_EXTERNAL (decl
))
5821 cp_warning ("declaration of `%#D' has `extern' and is initialized",
5823 DECL_EXTERNAL (decl
) = 0;
5824 if ( toplevel_bindings_p ())
5825 TREE_STATIC (decl
) = 1;
5827 /* Tell `pushdecl' this is an initialized decl
5828 even though we don't yet have the initializer expression.
5829 Also tell `cp_finish_decl' it may store the real initializer. */
5830 DECL_INITIAL (decl
) = error_mark_node
;
5833 if (context
&& TYPE_SIZE (context
) != NULL_TREE
)
5835 if (TREE_CODE (decl
) == VAR_DECL
)
5837 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
5838 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
5839 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
5840 else if (duplicate_decls (decl
, field
))
5844 /* If it was not explicitly declared `extern',
5845 revoke any previous claims of DECL_EXTERNAL. */
5846 if (DECL_THIS_EXTERN (decl
) == 0)
5847 DECL_EXTERNAL (decl
) = 0;
5848 if (DECL_LANG_SPECIFIC (decl
))
5849 DECL_IN_AGGR_P (decl
) = 0;
5850 pushclass (context
, 2);
5853 /* Add this decl to the current binding level, but not if it
5854 comes from another scope, e.g. a static member variable.
5855 TEM may equal DECL or it may be a previous decl of the same name. */
5857 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
)
5858 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !global_bindings_p ())
5859 || TREE_CODE (type
) == LANG_TYPE
)
5862 tem
= pushdecl (decl
);
5864 /* Tell the back-end to use or not use .common as appropriate. If we say
5865 -fconserve-space, we want this to save space, at the expense of wrong
5866 semantics. If we say -fno-conserve-space, we want this to produce
5867 errors about redefs; to do this we force variables into the data
5868 segment. Common storage is okay for non-public uninitialized data;
5869 the linker can't match it with storage from other files, and we may
5870 save some disk space. */
5871 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
5874 /* We don't do this yet for GNU C++. */
5875 /* For a local variable, define the RTL now. */
5876 if (! toplevel_bindings_p ()
5877 /* But not if this is a duplicate decl
5878 and we preserved the rtl from the previous one
5879 (which may or may not happen). */
5880 && DECL_RTL (tem
) == NULL_RTX
)
5882 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
5884 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
5885 && DECL_INITIAL (tem
) != NULL_TREE
)
5890 if (TREE_CODE (decl
) == TEMPLATE_DECL
)
5892 tree result
= DECL_TEMPLATE_RESULT (decl
);
5893 if (DECL_CONTEXT (result
) != NULL_TREE
)
5896 type
= DECL_CONTEXT (result
);
5898 if (TREE_CODE (type
) != UNINSTANTIATED_P_TYPE
)
5900 cp_error ("declaration of `%D' in non-template type `%T'",
5905 if (TREE_CODE (result
) == FUNCTION_DECL
)
5907 else if (TREE_CODE (result
) == VAR_DECL
)
5910 tree tmpl
= UPT_TEMPLATE (type
);
5912 fprintf (stderr
, "%s:%d: adding ", __FILE__
, __LINE__
);
5913 print_node_brief (stderr
, "", DECL_NAME (tem
), 0);
5914 fprintf (stderr
, " to class %s\n",
5915 IDENTIFIER_POINTER (DECL_NAME (tmpl
)));
5916 DECL_TEMPLATE_MEMBERS (tmpl
)
5917 = perm_tree_cons (DECL_NAME (tem
), tem
,
5918 DECL_TEMPLATE_MEMBERS (tmpl
));
5921 sorry ("static data member templates");
5926 my_friendly_abort (13);
5928 else if (TREE_CODE (result
) == FUNCTION_DECL
)
5929 /*tem = push_overloaded_decl (tem, 0)*/;
5930 else if (TREE_CODE (result
) == VAR_DECL
)
5932 cp_error ("data template `%#D' must be member of a class template",
5936 else if (TREE_CODE (result
) == TYPE_DECL
)
5938 cp_error ("invalid template `%#D'", result
);
5942 my_friendly_abort (14);
5946 && ! (TREE_CODE (tem
) == PARM_DECL
5947 || (TREE_READONLY (tem
)
5948 && (TREE_CODE (tem
) == VAR_DECL
5949 || TREE_CODE (tem
) == FIELD_DECL
))))
5951 /* When parsing and digesting the initializer,
5952 use temporary storage. Do this even if we will ignore the value. */
5953 if (toplevel_bindings_p () && debug_temp_inits
)
5955 if (TYPE_NEEDS_CONSTRUCTING (type
)
5956 || TREE_CODE (type
) == REFERENCE_TYPE
)
5957 /* In this case, the initializer must lay down in permanent
5958 storage, since it will be saved until `finish_file' is run. */
5961 temporary_allocation ();
5966 cadillac_start_decl (tem
);
5973 make_temporary_for_reference (decl
, ctor_call
, init
, cleanupp
)
5974 tree decl
, ctor_call
, init
;
5977 tree type
= TREE_TYPE (decl
);
5978 tree target_type
= TREE_TYPE (type
);
5983 tmp_addr
= TREE_VALUE (TREE_OPERAND (ctor_call
, 1));
5984 if (TREE_CODE (tmp_addr
) == NOP_EXPR
)
5985 tmp_addr
= TREE_OPERAND (tmp_addr
, 0);
5986 my_friendly_assert (TREE_CODE (tmp_addr
) == ADDR_EXPR
, 146);
5987 tmp
= TREE_OPERAND (tmp_addr
, 0);
5991 tmp
= get_temp_name (target_type
, toplevel_bindings_p ());
5992 tmp_addr
= build_unary_op (ADDR_EXPR
, tmp
, 0);
5995 TREE_TYPE (tmp_addr
) = build_pointer_type (target_type
);
5996 DECL_INITIAL (decl
) = convert (TYPE_POINTER_TO (target_type
), tmp_addr
);
5997 TREE_TYPE (DECL_INITIAL (decl
)) = type
;
5998 if (TYPE_NEEDS_CONSTRUCTING (target_type
))
6000 if (toplevel_bindings_p ())
6002 /* lay this variable out now. Otherwise `output_addressed_constants'
6003 gets confused by its initializer. */
6004 make_decl_rtl (tmp
, NULL_PTR
, 1);
6005 static_aggregates
= perm_tree_cons (init
, tmp
, static_aggregates
);
6009 if (ctor_call
!= NULL_TREE
)
6012 init
= build_method_call (tmp
, constructor_name_full (target_type
),
6013 build_tree_list (NULL_TREE
, init
),
6014 NULL_TREE
, LOOKUP_NORMAL
);
6015 DECL_INITIAL (decl
) = build (COMPOUND_EXPR
, type
, init
,
6016 DECL_INITIAL (decl
));
6017 *cleanupp
= maybe_build_cleanup (tmp
);
6022 DECL_INITIAL (tmp
) = init
;
6023 TREE_STATIC (tmp
) = toplevel_bindings_p ();
6024 cp_finish_decl (tmp
, init
, NULL_TREE
, 0, LOOKUP_ONLYCONVERTING
);
6026 if (TREE_STATIC (tmp
))
6027 preserve_initializer ();
6031 /* Handle initialization of references.
6032 These three arguments from from `cp_finish_decl', and have the
6033 same meaning here that they do there. */
6034 /* quotes on semantics can be found in ARM 8.4.3. */
6036 grok_reference_init (decl
, type
, init
, cleanupp
)
6037 tree decl
, type
, init
;
6042 if (init
== NULL_TREE
)
6044 if ((DECL_LANG_SPECIFIC (decl
) == 0
6045 || DECL_IN_AGGR_P (decl
) == 0)
6046 && ! DECL_THIS_EXTERN (decl
))
6048 cp_error ("`%D' declared as reference but not initialized", decl
);
6049 if (TREE_CODE (decl
) == VAR_DECL
)
6050 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6055 if (init
== error_mark_node
)
6058 if (TREE_CODE (type
) == REFERENCE_TYPE
6059 && TREE_CODE (init
) == CONSTRUCTOR
)
6061 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6065 if (TREE_CODE (init
) == TREE_LIST
)
6066 init
= build_compound_expr (init
);
6068 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6069 init
= convert_from_reference (init
);
6071 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6072 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6074 /* Note: default conversion is only called in very special cases. */
6075 init
= default_conversion (init
);
6078 tmp
= convert_to_reference
6079 (type
, init
, CONV_IMPLICIT
, LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
, decl
);
6081 if (tmp
== error_mark_node
)
6083 else if (tmp
!= NULL_TREE
)
6085 tree subtype
= TREE_TYPE (type
);
6088 /* Associate the cleanup with the reference so that we
6089 don't get burned by "aggressive" cleanup policy. */
6090 if (TYPE_NEEDS_DESTRUCTOR (subtype
))
6092 if (TREE_CODE (init
) == WITH_CLEANUP_EXPR
)
6094 *cleanupp
= TREE_OPERAND (init
, 2);
6095 TREE_OPERAND (init
, 2) = error_mark_node
;
6099 if (TREE_CODE (tmp
) == ADDR_EXPR
)
6100 tmp
= TREE_OPERAND (tmp
, 0);
6101 if (TREE_CODE (tmp
) == TARGET_EXPR
)
6103 *cleanupp
= build_delete
6104 (TYPE_POINTER_TO (subtype
),
6105 build_unary_op (ADDR_EXPR
, TREE_OPERAND (tmp
, 0), 0),
6106 integer_two_node
, LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
, 0);
6107 TREE_OPERAND (tmp
, 2) = error_mark_node
;
6112 DECL_INITIAL (decl
) = save_expr (init
);
6116 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6120 /* ?? Can this be optimized in some cases to
6121 hand back the DECL_INITIAL slot?? */
6122 if (TYPE_SIZE (TREE_TYPE (type
)))
6124 init
= convert_from_reference (decl
);
6125 if (TREE_PERMANENT (decl
))
6126 init
= copy_to_permanent (init
);
6127 SET_DECL_REFERENCE_SLOT (decl
, init
);
6130 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6132 expand_static_init (decl
, DECL_INITIAL (decl
));
6133 DECL_INITIAL (decl
) = NULL_TREE
;
6138 if (TREE_CODE (decl
) == VAR_DECL
)
6139 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6143 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6144 mucking with forces it does not comprehend (i.e. initialization with a
6145 constructor). If we are at global scope and won't go into COMMON, fill
6146 it in with a dummy CONSTRUCTOR to force the variable into .data;
6147 otherwise we can use error_mark_node. */
6150 obscure_complex_init (decl
, init
)
6153 if (! flag_no_inline
&& TREE_STATIC (decl
))
6155 if (extract_init (decl
, init
))
6159 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6160 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6163 DECL_INITIAL (decl
) = error_mark_node
;
6168 /* Finish processing of a declaration;
6169 install its line number and initial value.
6170 If the length of an array type is not known before,
6171 it must be determined now, from the initial value, or it is an error.
6173 Call `pop_obstacks' iff NEED_POP is nonzero.
6175 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6176 for aggregates that have constructors alive on the permanent obstack,
6177 so that the global initializing functions can be written at the end.
6179 INIT0 holds the value of an initializer that should be allowed to escape
6182 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6183 if the (init) syntax was used.
6185 For functions that take default parameters, DECL points to its
6186 "maximal" instantiation. `cp_finish_decl' must then also declared its
6187 subsequently lower and lower forms of instantiation, checking for
6188 ambiguity as it goes. This can be sped up later. */
6191 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
6198 tree cleanup
= NULL_TREE
, ttype
;
6200 int temporary
= allocation_temporary_p ();
6201 char *asmspec
= NULL
;
6202 int was_readonly
= 0;
6204 /* If this is 0, then we did not change obstacks. */
6208 error ("assignment (not initialization) in declaration");
6212 /* If a name was specified, get the string. */
6214 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
6216 /* If the type of the thing we are declaring either has
6217 a constructor, or has a virtual function table pointer,
6218 AND its initialization was accepted by `start_decl',
6219 then we stayed on the permanent obstack through the
6220 declaration, otherwise, changed obstacks as GCC would. */
6222 type
= TREE_TYPE (decl
);
6224 if (type
== error_mark_node
)
6226 if (toplevel_bindings_p () && temporary
)
6227 end_temporary_allocation ();
6232 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
6234 /* Take care of TYPE_DECLs up front. */
6235 if (TREE_CODE (decl
) == TYPE_DECL
)
6237 if (init
&& DECL_INITIAL (decl
))
6239 /* typedef foo = bar; store the type of bar as the type of foo. */
6240 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
6241 DECL_INITIAL (decl
) = init
= NULL_TREE
;
6243 if (type
!= error_mark_node
6244 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
6246 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
6247 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
6248 set_identifier_type_value (DECL_NAME (decl
), type
);
6249 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
6251 GNU_xref_decl (current_function_decl
, decl
);
6252 rest_of_decl_compilation (decl
, NULL_PTR
,
6253 DECL_CONTEXT (decl
) == NULL_TREE
, 0);
6256 if (TREE_CODE (decl
) != FUNCTION_DECL
)
6258 ttype
= target_type (type
);
6260 Leave this out until we can figure out why it was
6261 needed/desirable in the first place. Then put a comment
6262 here explaining why. Or just delete the code if no ill
6264 if (TYPE_NAME (ttype
)
6265 && TREE_CODE (TYPE_NAME (ttype
)) == TYPE_DECL
6266 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (ttype
)))
6268 tree old_id
= TYPE_IDENTIFIER (ttype
);
6269 char *newname
= (char *)alloca (IDENTIFIER_LENGTH (old_id
) + 2);
6270 /* Need to preserve template data for UPT nodes. */
6271 tree old_template
= IDENTIFIER_TEMPLATE (old_id
);
6273 bcopy (IDENTIFIER_POINTER (old_id
), newname
+ 1,
6274 IDENTIFIER_LENGTH (old_id
) + 1);
6275 old_id
= get_identifier (newname
);
6276 lookup_tag_reverse (ttype
, old_id
);
6277 TYPE_IDENTIFIER (ttype
) = old_id
;
6278 IDENTIFIER_TEMPLATE (old_id
) = old_template
;
6283 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
6284 && TYPE_NEEDS_CONSTRUCTING (type
))
6287 /* Currently, GNU C++ puts constants in text space, making them
6288 impossible to initialize. In the future, one would hope for
6289 an operating system which understood the difference between
6290 initialization and the running of a program. */
6292 TREE_READONLY (decl
) = 0;
6295 if (TREE_CODE (decl
) == FIELD_DECL
)
6297 if (init
&& init
!= error_mark_node
)
6298 my_friendly_assert (TREE_PERMANENT (init
), 147);
6302 /* This must override the asm specifier which was placed
6303 by grokclassfn. Lay this out fresh. */
6304 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
6305 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
6306 make_decl_rtl (decl
, asmspec
, 0);
6309 /* If `start_decl' didn't like having an initialization, ignore it now. */
6310 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
6312 else if (DECL_EXTERNAL (decl
))
6314 else if (TREE_CODE (type
) == REFERENCE_TYPE
6315 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
6317 if (TREE_STATIC (decl
))
6318 make_decl_rtl (decl
, NULL_PTR
,
6319 toplevel_bindings_p ()
6320 || pseudo_global_level_p ());
6321 grok_reference_init (decl
, type
, init
, &cleanup
);
6325 GNU_xref_decl (current_function_decl
, decl
);
6327 if (TREE_CODE (decl
) == FIELD_DECL
)
6329 else if (TREE_CODE (decl
) == CONST_DECL
)
6331 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
6333 DECL_INITIAL (decl
) = init
;
6335 /* This will keep us from needing to worry about our obstacks. */
6336 my_friendly_assert (init
!= NULL_TREE
, 149);
6341 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
6343 if (TREE_CODE (type
) == ARRAY_TYPE
)
6344 init
= digest_init (type
, init
, (tree
*) 0);
6345 else if (TREE_CODE (init
) == CONSTRUCTOR
)
6347 if (TYPE_NEEDS_CONSTRUCTING (type
))
6349 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
6351 init
= error_mark_node
;
6354 goto dont_use_constructor
;
6357 /* fix this in `build_functional_cast' instead.
6358 Here's the trigger code:
6363 ostream (int, char *);
6370 int buf_size = 1024;
6371 static char buf[buf_size];
6372 const char *debug(int i) {
6374 ostream o = ostream(buf_size, b);
6380 else if (TREE_CODE (init
) == TARGET_EXPR
6381 && TREE_CODE (TREE_OPERAND (init
, 1) == NEW_EXPR
))
6383 /* User wrote something like `foo x = foo (args)' */
6384 my_friendly_assert (TREE_CODE (TREE_OPERAND (init
, 0)) == VAR_DECL
, 150);
6385 my_friendly_assert (DECL_NAME (TREE_OPERAND (init
, 0)) == NULL_TREE
, 151);
6387 /* User wrote exactly `foo x = foo (args)' */
6388 if (TYPE_MAIN_VARIANT (type
) == TREE_TYPE (init
))
6390 init
= build (CALL_EXPR
, TREE_TYPE (init
),
6391 TREE_OPERAND (TREE_OPERAND (init
, 1), 0),
6392 TREE_OPERAND (TREE_OPERAND (init
, 1), 1), 0);
6393 TREE_SIDE_EFFECTS (init
) = 1;
6400 dont_use_constructor
:
6401 if (TREE_CODE (init
) != TREE_VEC
)
6402 init
= store_init_value (decl
, init
);
6406 /* We must hide the initializer so that expand_decl
6407 won't try to do something it does not understand. */
6408 init
= obscure_complex_init (decl
, init
);
6410 else if (DECL_EXTERNAL (decl
))
6412 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
6413 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
6416 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
6417 ctype
= TREE_TYPE (ctype
);
6418 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
6420 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
6421 cp_error ("structure `%D' with uninitialized const members", decl
);
6422 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
6423 cp_error ("structure `%D' with uninitialized reference members",
6427 if (TREE_CODE (decl
) == VAR_DECL
6428 && !DECL_INITIAL (decl
)
6429 && !TYPE_NEEDS_CONSTRUCTING (type
)
6430 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
6431 cp_error ("uninitialized const `%D'", decl
);
6433 if (TYPE_SIZE (type
) != NULL_TREE
6434 && TYPE_NEEDS_CONSTRUCTING (type
))
6435 init
= obscure_complex_init (decl
, NULL_TREE
);
6437 else if (TREE_CODE (decl
) == VAR_DECL
6438 && TREE_CODE (type
) != REFERENCE_TYPE
6439 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
6441 /* ``Unless explicitly declared extern, a const object does not have
6442 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
6443 However, if it's `const int foo = 1; const int foo;', don't complain
6444 about the second decl, since it does have an initializer before.
6445 We deliberately don't complain about arrays, because they're
6446 supposed to be initialized by a constructor. */
6447 if (! DECL_INITIAL (decl
)
6448 && TREE_CODE (type
) != ARRAY_TYPE
6449 && (!pedantic
|| !current_class_type
))
6450 cp_error ("uninitialized const `%#D'", decl
);
6453 /* For top-level declaration, the initial value was read in
6454 the temporary obstack. MAXINDEX, rtl, etc. to be made below
6455 must go in the permanent obstack; but don't discard the
6456 temporary data yet. */
6458 if (toplevel_bindings_p () && temporary
)
6459 end_temporary_allocation ();
6461 /* Deduce size of array from initialization, if not already known. */
6463 if (TREE_CODE (type
) == ARRAY_TYPE
6464 && TYPE_DOMAIN (type
) == NULL_TREE
6465 && TREE_CODE (decl
) != TYPE_DECL
)
6468 = (TREE_STATIC (decl
)
6469 /* Even if pedantic, an external linkage array
6470 may have incomplete type at first. */
6471 ? pedantic
&& ! DECL_EXTERNAL (decl
)
6472 : !DECL_EXTERNAL (decl
));
6473 tree initializer
= init
? init
: DECL_INITIAL (decl
);
6474 int failure
= complete_array_type (type
, initializer
, do_default
);
6477 cp_error ("initializer fails to determine size of `%D'", decl
);
6482 cp_error ("array size missing in `%D'", decl
);
6483 /* If a `static' var's size isn't known, make it extern as
6484 well as static, so it does not get allocated. If it's not
6485 `static', then don't mark it extern; finish_incomplete_decl
6486 will give it a default size and it will get allocated. */
6487 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
6488 DECL_EXTERNAL (decl
) = 1;
6491 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
6492 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
6494 cp_error ("zero-size array `%D'", decl
);
6496 layout_decl (decl
, 0);
6499 if (TREE_CODE (decl
) == VAR_DECL
)
6501 if (DECL_SIZE (decl
) == NULL_TREE
6502 && TYPE_SIZE (TREE_TYPE (decl
)) != NULL_TREE
)
6503 layout_decl (decl
, 0);
6505 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
6507 /* A static variable with an incomplete type:
6508 that is an error if it is initialized.
6509 Otherwise, let it through, but if it is not `extern'
6510 then it may cause an error message later. */
6511 if (DECL_INITIAL (decl
) != NULL_TREE
)
6512 cp_error ("storage size of `%D' isn't known", decl
);
6515 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
6517 /* An automatic variable with an incomplete type: that is an error.
6518 Don't talk about array types here, since we took care of that
6519 message in grokdeclarator. */
6520 cp_error ("storage size of `%D' isn't known", decl
);
6521 TREE_TYPE (decl
) = error_mark_node
;
6523 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
6524 /* Let debugger know it should output info for this type. */
6525 note_debug_info_needed (ttype
);
6527 if (TREE_STATIC (decl
) && DECL_CONTEXT (decl
)
6528 && TREE_CODE_CLASS (TREE_CODE (DECL_CONTEXT (decl
))) == 't')
6529 note_debug_info_needed (DECL_CONTEXT (decl
));
6531 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
6532 && DECL_SIZE (decl
) != NULL_TREE
6533 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
6535 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
6536 constant_expression_warning (DECL_SIZE (decl
));
6538 cp_error ("storage size of `%D' isn't constant", decl
);
6541 if (!DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
))
6543 int yes
= suspend_momentary ();
6545 /* If INIT comes from a functional cast, use the cleanup
6546 we built for that. Otherwise, make our own cleanup. */
6547 if (init
&& TREE_CODE (init
) == WITH_CLEANUP_EXPR
6548 && comptypes (TREE_TYPE (decl
), TREE_TYPE (init
), 1))
6550 cleanup
= TREE_OPERAND (init
, 2);
6551 init
= TREE_OPERAND (init
, 0);
6552 current_binding_level
->have_cleanups
= 1;
6555 cleanup
= maybe_build_cleanup (decl
);
6556 resume_momentary (yes
);
6559 /* PARM_DECLs get cleanups, too. */
6560 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
6563 end_temporary_allocation ();
6564 cleanup
= maybe_build_cleanup (decl
);
6566 resume_temporary_allocation ();
6569 /* Output the assembler code and/or RTL code for variables and functions,
6570 unless the type is an undefined structure or union.
6571 If not, it will get done when the type is completed. */
6573 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
6574 || TREE_CODE (decl
) == RESULT_DECL
)
6576 /* ??? FIXME: What about nested classes? */
6577 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
6579 = ((flag_traditional
6580 || (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)))
6581 && allocation_temporary_p ());
6584 end_temporary_allocation ();
6586 if (TREE_CODE (decl
) == VAR_DECL
6587 && ! toplevel_bindings_p ()
6588 && ! TREE_STATIC (decl
)
6589 && type_needs_gc_entry (type
))
6590 DECL_GC_OFFSET (decl
) = size_int (++current_function_obstack_index
);
6592 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
6593 make_decl_rtl (decl
, NULL_PTR
, toplev
);
6594 else if (TREE_CODE (decl
) == VAR_DECL
6595 && TREE_READONLY (decl
)
6596 && DECL_INITIAL (decl
) != NULL_TREE
6597 && DECL_INITIAL (decl
) != error_mark_node
6598 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
6600 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
6603 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
6606 && TREE_STATIC (decl
)
6607 && ! TREE_SIDE_EFFECTS (decl
)
6608 && ! TREE_PUBLIC (decl
)
6609 && ! DECL_EXTERNAL (decl
)
6610 && ! TYPE_NEEDS_DESTRUCTOR (type
)
6611 && DECL_MODE (decl
) != BLKmode
)
6613 /* If this variable is really a constant, then fill its DECL_RTL
6614 slot with something which won't take up storage.
6615 If something later should take its address, we can always give
6616 it legitimate RTL at that time. */
6617 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
6618 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
6619 TREE_ASM_WRITTEN (decl
) = 1;
6621 else if (toplev
&& ! TREE_PUBLIC (decl
))
6623 /* If this is a static const, change its apparent linkage
6624 if it belongs to a #pragma interface. */
6625 if (!interface_unknown
)
6627 TREE_PUBLIC (decl
) = 1;
6628 DECL_EXTERNAL (decl
) = interface_only
;
6630 make_decl_rtl (decl
, asmspec
, toplev
);
6633 rest_of_decl_compilation (decl
, asmspec
, toplev
, 0);
6635 else if (TREE_CODE (decl
) == VAR_DECL
6636 && DECL_LANG_SPECIFIC (decl
)
6637 && DECL_IN_AGGR_P (decl
))
6639 if (TREE_STATIC (decl
))
6641 if (init
== NULL_TREE
6642 #ifdef DEFAULT_STATIC_DEFS
6643 /* If this code is dead, then users must
6644 explicitly declare static member variables
6645 outside the class def'n as well. */
6646 && TYPE_NEEDS_CONSTRUCTING (type
)
6650 DECL_EXTERNAL (decl
) = 1;
6651 make_decl_rtl (decl
, asmspec
, 1);
6654 rest_of_decl_compilation (decl
, asmspec
, toplev
, 0);
6657 /* Just a constant field. Should not need any rtl. */
6661 rest_of_decl_compilation (decl
, asmspec
, toplev
, 0);
6664 resume_temporary_allocation ();
6666 if (type
!= error_mark_node
6667 && TYPE_LANG_SPECIFIC (type
)
6668 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
6669 abstract_virtuals_error (decl
, type
);
6670 else if ((TREE_CODE (type
) == FUNCTION_TYPE
6671 || TREE_CODE (type
) == METHOD_TYPE
)
6672 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
6673 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
6674 abstract_virtuals_error (decl
, TREE_TYPE (type
));
6676 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
6677 signature_error (decl
, type
);
6678 else if ((TREE_CODE (type
) == FUNCTION_TYPE
6679 || TREE_CODE (type
) == METHOD_TYPE
)
6680 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
6681 && IS_SIGNATURE (TREE_TYPE (type
)))
6682 signature_error (decl
, TREE_TYPE (type
));
6684 if (TREE_CODE (decl
) == FUNCTION_DECL
)
6686 else if (DECL_EXTERNAL (decl
))
6688 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
6690 /* Cleanups for static variables are handled by `finish_file'. */
6691 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
)
6692 expand_static_init (decl
, init
);
6693 else if (TYPE_NEEDS_DESTRUCTOR (type
))
6694 static_aggregates
= perm_tree_cons (NULL_TREE
, decl
,
6697 /* Make entry in appropriate vector. */
6698 if (flag_gc
&& type_needs_gc_entry (type
))
6699 build_static_gc_entry (decl
, type
);
6703 tree old_cleanups
= cleanups_this_call
;
6704 /* This is a declared decl which must live until the
6705 end of the binding contour. It may need a cleanup. */
6707 /* Recompute the RTL of a local array now
6708 if it used to be an incomplete type. */
6709 if (was_incomplete
&& ! TREE_STATIC (decl
))
6711 /* If we used it already as memory, it must stay in memory. */
6712 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
6713 /* If it's still incomplete now, no init will save it. */
6714 if (DECL_SIZE (decl
) == NULL_TREE
)
6715 DECL_INITIAL (decl
) = NULL_TREE
;
6718 else if (! TREE_ASM_WRITTEN (decl
)
6719 && (TYPE_SIZE (type
) != NULL_TREE
6720 || TREE_CODE (type
) == ARRAY_TYPE
))
6722 /* Do this here, because we did not expand this decl's
6723 rtl in start_decl. */
6724 if (DECL_RTL (decl
) == NULL_RTX
)
6728 /* XXX: Why don't we use decl here? */
6729 /* Ans: Because it was already expanded? */
6730 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
6731 cp_error ("parser lost in parsing declaration of `%D'",
6733 /* Cleanup used up here. */
6734 cleanup
= NULL_TREE
;
6738 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
6740 /* Compute and store the initial value. */
6741 expand_decl_init (decl
);
6743 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
6745 emit_line_note (DECL_SOURCE_FILE (decl
),
6746 DECL_SOURCE_LINE (decl
));
6747 expand_aggr_init (decl
, init
, 0, flags
);
6750 /* Set this to 0 so we can tell whether an aggregate which
6751 was initialized was ever used. Don't do this if it has a
6752 destructor, so we don't complain about the 'resource
6753 allocation is initialization' idiom. */
6754 if (TYPE_NEEDS_CONSTRUCTING (type
) && cleanup
== NULL_TREE
)
6755 TREE_USED (decl
) = 0;
6757 /* Store the cleanup, if there was one. */
6760 if (! expand_decl_cleanup (decl
, cleanup
))
6761 cp_error ("parser lost in parsing declaration of `%D'",
6765 /* Cleanup any temporaries needed for the initial value. */
6766 expand_cleanups_to (old_cleanups
);
6770 /* Undo call to `pushclass' that was done in `start_decl'
6771 due to initialization of qualified member variable.
6772 I.e., Foo::x = 10; */
6774 tree context
= DECL_CONTEXT (decl
);
6776 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
6777 && (TREE_CODE (decl
) == VAR_DECL
6778 /* We also have a pushclass done that we need to undo here
6779 if we're at top level and declare a method. */
6780 || (TREE_CODE (decl
) == FUNCTION_DECL
6781 /* If size hasn't been set, we're still defining it,
6782 and therefore inside the class body; don't pop
6783 the binding level.. */
6784 && TYPE_SIZE (context
) != NULL_TREE
6785 /* The binding level gets popped elsewhere for a
6786 friend declaration inside another class. */
6788 && TYPE_IDENTIFIER (context) == current_class_name
6790 && context
== current_class_type
6798 /* If requested, warn about definitions of large data objects. */
6800 if (warn_larger_than
6801 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
6802 && !DECL_EXTERNAL (decl
))
6804 register tree decl_size
= DECL_SIZE (decl
);
6806 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
6808 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
6810 if (units
> larger_than_size
)
6811 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
6817 /* Resume permanent allocation, if not within a function. */
6818 /* The corresponding push_obstacks_nochange is in start_decl,
6819 start_method, groktypename, and in grokfield. */
6824 TREE_READONLY (decl
) = 1;
6827 cadillac_finish_decl (decl
);
6830 /* This is here for a midend callback from c-common.c */
6832 finish_decl (decl
, init
, asmspec_tree
)
6836 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
6840 expand_static_init (decl
, init
)
6844 tree oldstatic
= value_member (decl
, static_aggregates
);
6849 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
6850 cp_error ("multiple initializations given for `%D'", decl
);
6852 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
6854 /* Emit code to perform this initialization but once. */
6857 /* Remember this information until end of file. */
6858 push_obstacks (&permanent_obstack
, &permanent_obstack
);
6860 /* Emit code to perform this initialization but once. */
6861 temp
= get_temp_name (integer_type_node
, 1);
6862 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
6863 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
6864 integer_zero_node
, 1), 0);
6865 old_cleanups
= cleanups_this_call
;
6866 expand_assignment (temp
, integer_one_node
, 0, 0);
6867 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
6868 || TREE_CODE (init
) == TREE_LIST
)
6870 expand_aggr_init (decl
, init
, 0, 0);
6871 do_pending_stack_adjust ();
6874 expand_assignment (decl
, init
, 0, 0);
6875 /* Cleanup any temporaries needed for the initial value. */
6876 expand_cleanups_to (old_cleanups
);
6878 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
6880 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
6881 TREE_STATIC (static_aggregates
) = 1;
6884 /* Resume old (possibly temporary) allocation. */
6889 /* This code takes into account memory allocation
6890 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
6891 does not hold for this object, then we must make permanent
6892 the storage currently in the temporary obstack. */
6893 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
6894 preserve_initializer ();
6895 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
6899 /* Make TYPE a complete type based on INITIAL_VALUE.
6900 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
6901 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
6904 complete_array_type (type
, initial_value
, do_default
)
6905 tree type
, initial_value
;
6908 register tree maxindex
= NULL_TREE
;
6913 /* Note MAXINDEX is really the maximum index,
6914 one less than the size. */
6915 if (TREE_CODE (initial_value
) == STRING_CST
)
6918 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
6919 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
6922 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
6924 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
6925 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
6926 for (; elts
; elts
= TREE_CHAIN (elts
))
6928 if (TREE_PURPOSE (elts
))
6929 maxindex
= TREE_PURPOSE (elts
);
6931 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
6933 maxindex
= copy_node (maxindex
);
6937 /* Make an error message unless that happened already. */
6938 if (initial_value
!= error_mark_node
)
6941 /* Prevent further error messages. */
6942 maxindex
= build_int_2 (0, 0);
6949 maxindex
= build_int_2 (0, 0);
6957 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
6958 if (!TREE_TYPE (maxindex
))
6959 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
6961 itype
= TREE_TYPE (initial_value
);
6964 if (itype
&& !TYPE_DOMAIN (itype
))
6965 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
6968 /* Lay out the type now that we can get the real answer. */
6975 /* Return zero if something is declared to be a member of type
6976 CTYPE when in the context of CUR_TYPE. STRING is the error
6977 message to print in that case. Otherwise, quietly return 1. */
6979 member_function_or_else (ctype
, cur_type
, string
)
6980 tree ctype
, cur_type
;
6983 if (ctype
&& ctype
!= cur_type
)
6985 error (string
, TYPE_NAME_STRING (ctype
));
6991 /* Subroutine of `grokdeclarator'. */
6993 /* Generate errors possibly applicable for a given set of specifiers.
6994 This is for ARM $7.1.2. */
6996 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
6999 int virtualp
, quals
, friendp
, raises
, inlinep
;
7002 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7004 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7006 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7009 cp_error_at ("invalid friend declaration", object
);
7011 cp_error_at ("invalid exception specifications", object
);
7014 /* CTYPE is class type, or null if non-class.
7015 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7017 DECLARATOR is the function's name.
7018 VIRTUALP is truthvalue of whether the function is virtual or not.
7019 FLAGS are to be passed through to `grokclassfn'.
7020 QUALS are qualifiers indicating whether the function is `const'
7022 RAISES is a list of exceptions that this function can raise.
7023 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7024 not look, and -1 if we should not call `grokclassfn' at all. */
7026 grokfndecl (ctype
, type
, declarator
, virtualp
, flags
, quals
,
7027 raises
, check
, publicp
, inlinep
)
7031 enum overload_flags flags
;
7033 int check
, publicp
, inlinep
;
7036 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
7039 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
7040 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
7046 type
= build_exception_variant (ctype
, type
, raises
);
7047 raises
= TYPE_RAISES_EXCEPTIONS (type
);
7049 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
7050 /* propagate volatile out from type to decl */
7051 if (TYPE_VOLATILE (type
))
7052 TREE_THIS_VOLATILE (decl
) = 1;
7054 /* Should probably propagate const out from type to decl I bet (mrs). */
7057 DECL_STATIC_FUNCTION_P (decl
) = 1;
7058 DECL_CONTEXT (decl
) = ctype
;
7059 DECL_CLASS_CONTEXT (decl
) = ctype
;
7062 /* All function decls start out public; we'll fix their linkage later (at
7063 definition or EOF) if appropriate. */
7064 TREE_PUBLIC (decl
) = 1;
7066 if (ctype
== NULL_TREE
&& ! strcmp (IDENTIFIER_POINTER (declarator
), "main"))
7069 error ("cannot declare `main' to be inline");
7071 error ("cannot declare `main' to be static");
7077 DECL_C_STATIC (decl
) = 1;
7080 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
7082 DECL_EXTERNAL (decl
) = 1;
7083 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
7085 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7086 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
7090 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
7091 grok_op_properties (decl
, virtualp
, check
< 0);
7093 /* Caller will do the rest of this. */
7097 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
7100 /* Just handle constructors here. We could do this
7101 inside the following if stmt, but I think
7102 that the code is more legible by breaking this
7103 case out. See comments below for what each of
7104 the following calls is supposed to do. */
7105 DECL_CONSTRUCTOR_P (decl
) = 1;
7107 grokclassfn (ctype
, declarator
, decl
, flags
, quals
);
7109 check_classfn (ctype
, declarator
, decl
);
7110 if (! grok_ctor_properties (ctype
, decl
))
7113 if (check
== 0 && ! current_function_decl
)
7115 /* FIXME: this should only need to look at
7116 IDENTIFIER_GLOBAL_VALUE. */
7117 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
7118 if (tmp
== NULL_TREE
)
7119 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
)) = decl
;
7120 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
7121 cp_error ("inconsistent declarations for `%D'", decl
);
7124 duplicate_decls (decl
, tmp
);
7126 /* avoid creating circularities. */
7127 DECL_CHAIN (decl
) = NULL_TREE
;
7129 make_decl_rtl (decl
, NULL_PTR
, 1);
7136 /* Function gets the ugly name, field gets the nice one.
7137 This call may change the type of the function (because
7138 of default parameters)! */
7139 if (ctype
!= NULL_TREE
)
7140 grokclassfn (ctype
, cname
, decl
, flags
, quals
);
7142 if (ctype
!= NULL_TREE
&& check
)
7143 check_classfn (ctype
, cname
, decl
);
7145 if (ctype
== NULL_TREE
|| check
)
7148 /* Now install the declaration of this function so that others may
7149 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
7151 if (! current_function_decl
)
7153 /* FIXME: this should only need to look at
7154 IDENTIFIER_GLOBAL_VALUE. */
7155 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
7156 if (tmp
== NULL_TREE
)
7157 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
)) = decl
;
7158 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
7159 cp_error ("inconsistent declarations for `%D'", decl
);
7162 duplicate_decls (decl
, tmp
);
7164 /* avoid creating circularities. */
7165 DECL_CHAIN (decl
) = NULL_TREE
;
7167 make_decl_rtl (decl
, NULL_PTR
, 1);
7170 /* If this declaration supersedes the declaration of
7171 a method declared virtual in the base class, then
7172 mark this field as being virtual as well. */
7174 tree binfos
= BINFO_BASETYPES (TYPE_BINFO (ctype
));
7175 int i
, n_baselinks
= binfos
? TREE_VEC_LENGTH (binfos
) : 0;
7177 for (i
= 0; i
< n_baselinks
; i
++)
7179 tree base_binfo
= TREE_VEC_ELT (binfos
, i
);
7180 if (TYPE_VIRTUAL_P (BINFO_TYPE (base_binfo
))
7181 || flag_all_virtual
== 1)
7183 tmp
= get_matching_virtual (base_binfo
, decl
,
7184 flags
== DTOR_FLAG
);
7187 /* If this function overrides some virtual in some base
7188 class, then the function itself is also necessarily
7189 virtual, even if the user didn't explicitly say so. */
7190 DECL_VIRTUAL_P (decl
) = 1;
7192 /* The TMP we really want is the one from the deepest
7193 baseclass on this path, taking care not to
7194 duplicate if we have already found it (via another
7195 path to its virtual baseclass. */
7198 cp_error ("method `%D' may not be declared static",
7200 cp_error_at ("(since `%D' declared virtual in base class.)",
7207 /* The argument types may have changed... */
7208 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
7209 tree base_variant
= TREE_TYPE (TREE_VALUE (argtypes
));
7211 argtypes
= commonparms (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (tmp
))),
7212 TREE_CHAIN (argtypes
));
7213 /* But the return type has not. */
7214 type
= build_cplus_method_type (base_variant
, TREE_TYPE (type
), argtypes
);
7217 type
= build_exception_variant (ctype
, type
, raises
);
7218 raises
= TYPE_RAISES_EXCEPTIONS (type
);
7220 TREE_TYPE (decl
) = type
;
7222 = tree_cons (NULL_TREE
, tmp
, DECL_VINDEX (decl
));
7231 if (DECL_VINDEX (decl
) == NULL_TREE
)
7232 DECL_VINDEX (decl
) = error_mark_node
;
7233 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
7234 if (ctype
&& CLASSTYPE_VTABLE_NEEDS_WRITING (ctype
)
7235 /* If this function is derived from a template, don't
7236 make it public. This shouldn't be here, but there's
7237 no good way to override the interface pragmas for one
7238 function or class only. Bletch. */
7239 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (ctype
)) == NULL_TREE
7240 && (write_virtuals
== 2
7241 || (write_virtuals
== 3
7242 && CLASSTYPE_INTERFACE_KNOWN (ctype
))))
7243 TREE_PUBLIC (decl
) = 1;
7250 grokvardecl (type
, declarator
, specbits
, initialized
, constp
)
7253 RID_BIT_TYPE specbits
;
7259 if (TREE_CODE (type
) == OFFSET_TYPE
)
7261 /* If you declare a static member so that it
7262 can be initialized, the code will reach here. */
7263 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
7264 type
= TREE_TYPE (type
);
7265 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
7266 DECL_CONTEXT (decl
) = basetype
;
7267 DECL_CLASS_CONTEXT (decl
) = basetype
;
7268 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
7271 decl
= build_decl (VAR_DECL
, declarator
, type
);
7273 DECL_ASSEMBLER_NAME (decl
) = current_namespace_id (DECL_ASSEMBLER_NAME (decl
));
7275 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
7277 DECL_THIS_EXTERN (decl
) = 1;
7278 DECL_EXTERNAL (decl
) = !initialized
;
7281 /* In class context, static means one per class,
7282 public access, and static storage. */
7283 if (DECL_FIELD_CONTEXT (decl
) != NULL_TREE
7284 && IS_AGGR_TYPE (DECL_FIELD_CONTEXT (decl
)))
7286 TREE_PUBLIC (decl
) = 1;
7287 TREE_STATIC (decl
) = 1;
7288 DECL_EXTERNAL (decl
) = 0;
7290 /* At top level, either `static' or no s.c. makes a definition
7291 (perhaps tentative), and absence of `static' makes it public. */
7292 else if (toplevel_bindings_p ())
7294 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
7295 && (DECL_EXTERNAL (decl
) || ! constp
));
7296 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
7298 /* Not at top level, only `static' makes a static definition. */
7301 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
7302 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
7307 /* Create a canonical pointer to member function type. */
7310 build_ptrmemfunc_type (type
)
7317 /* If a canonical type already exists for this type, use it. We use
7318 this method instead of type_hash_canon, because it only does a
7319 simple equality check on the list of field members. */
7321 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
7324 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
7326 u
= make_lang_type (UNION_TYPE
);
7327 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
7328 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
7330 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
7331 TYPE_NAME (u
) = NULL_TREE
;
7333 t
= make_lang_type (RECORD_TYPE
);
7335 /* Let the front-end know this is a pointer to member function. */
7336 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
7337 /* and not really an aggregate. */
7338 IS_AGGR_TYPE (t
) = 0;
7340 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
7342 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
7344 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
7345 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
7349 /* Zap out the name so that the back-end will give us the debugging
7350 information for this anonymous RECORD_TYPE. */
7351 TYPE_NAME (t
) = NULL_TREE
;
7353 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
7355 /* Seems to be wanted. */
7356 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
7360 /* Given declspecs and a declarator,
7361 determine the name and type of the object declared
7362 and construct a ..._DECL node for it.
7363 (In one case we can return a ..._TYPE node instead.
7364 For invalid input we sometimes return 0.)
7366 DECLSPECS is a chain of tree_list nodes whose value fields
7367 are the storage classes and type specifiers.
7369 DECL_CONTEXT says which syntactic context this declaration is in:
7370 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
7371 FUNCDEF for a function definition. Like NORMAL but a few different
7372 error messages in each case. Return value may be zero meaning
7373 this definition is too screwy to try to parse.
7374 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
7375 handle member functions (which have FIELD context).
7376 Return value may be zero meaning this definition is too screwy to
7378 PARM for a parameter declaration (either within a function prototype
7379 or before a function body). Make a PARM_DECL, or return void_type_node.
7380 CATCHPARM for a parameter declaration before a catch clause.
7381 TYPENAME if for a typename (in a cast or sizeof).
7382 Don't make a DECL node; just return the ..._TYPE node.
7383 FIELD for a struct or union field; make a FIELD_DECL.
7384 BITFIELD for a field with specified width.
7385 INITIALIZED is 1 if the decl has an initializer.
7387 In the TYPENAME case, DECLARATOR is really an absolute declarator.
7388 It may also be so in the PARM case, for a prototype where the
7389 argument type is specified but not the name.
7391 This function is where the complicated C meanings of `static'
7392 and `extern' are interpreted.
7394 For C++, if there is any monkey business to do, the function which
7395 calls this one must do it, i.e., prepending instance variables,
7396 renaming overloaded function names, etc.
7398 Note that for this C++, it is an error to define a method within a class
7399 which does not belong to that class.
7401 Except in the case where SCOPE_REFs are implicitly known (such as
7402 methods within a class being redundantly qualified),
7403 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
7404 (class_name::decl_name). The caller must also deal with this.
7406 If a constructor or destructor is seen, and the context is FIELD,
7407 then the type gains the attribute TREE_HAS_x. If such a declaration
7408 is erroneous, NULL_TREE is returned.
7410 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
7411 function, these are the qualifiers to give to the `this' pointer.
7413 May return void_type_node if the declarator turned out to be a friend.
7414 See grokfield for details. */
7416 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
7419 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, raises
)
7422 enum decl_context decl_context
;
7426 RID_BIT_TYPE specbits
;
7429 tree type
= NULL_TREE
;
7433 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
7434 int explicit_int
= 0;
7435 int explicit_char
= 0;
7436 int opaque_typedef
= 0;
7437 tree typedef_decl
= NULL_TREE
;
7439 tree typedef_type
= NULL_TREE
;
7440 int funcdef_flag
= 0;
7441 enum tree_code innermost_code
= ERROR_MARK
;
7443 int size_varies
= 0;
7444 tree decl_machine_attr
= NULL_TREE
;
7445 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
7446 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
7447 tree init
= NULL_TREE
;
7449 /* Keep track of what sort of function is being processed
7450 so that we can warn about default return values, or explicit
7451 return values which do not match prescribed defaults. */
7452 enum return_types return_type
= return_normal
;
7454 tree dname
= NULL_TREE
;
7455 tree ctype
= current_class_type
;
7456 tree ctor_return_type
= NULL_TREE
;
7457 enum overload_flags flags
= NO_SPECIAL
;
7458 tree quals
= NULL_TREE
;
7460 RIDBIT_RESET_ALL (specbits
);
7461 if (decl_context
== FUNCDEF
)
7462 funcdef_flag
= 1, decl_context
= NORMAL
;
7463 else if (decl_context
== MEMFUNCDEF
)
7464 funcdef_flag
= -1, decl_context
= FIELD
;
7465 else if (decl_context
== BITFIELD
)
7466 bitfield
= 1, decl_context
= FIELD
;
7468 if (flag_traditional
&& allocation_temporary_p ())
7469 end_temporary_allocation ();
7471 /* Look inside a declarator for the name being declared
7472 and get it as a string, for an error message. */
7474 tree last
= NULL_TREE
;
7475 register tree decl
= declarator
;
7479 switch (TREE_CODE (decl
))
7483 decl
= TREE_OPERAND (decl
, 0);
7486 case BIT_NOT_EXPR
: /* for C++ destructors! */
7488 tree name
= TREE_OPERAND (decl
, 0);
7489 tree rename
= NULL_TREE
;
7491 my_friendly_assert (flags
== NO_SPECIAL
, 152);
7493 return_type
= return_dtor
;
7494 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
7495 if (ctype
== NULL_TREE
)
7497 if (current_class_type
== NULL_TREE
)
7499 error ("destructors must be member functions");
7504 tree t
= constructor_name (current_class_name
);
7511 tree t
= constructor_name (ctype
);
7518 error ("destructor `%s' must match class name `%s'",
7519 IDENTIFIER_POINTER (name
),
7520 IDENTIFIER_POINTER (rename
));
7521 TREE_OPERAND (decl
, 0) = rename
;
7527 case ADDR_EXPR
: /* C++ reference declaration */
7532 innermost_code
= TREE_CODE (decl
);
7534 decl
= TREE_OPERAND (decl
, 0);
7538 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
7540 /* This is actually a variable declaration using constructor
7541 syntax. We need to call start_decl and cp_finish_decl so we
7542 can get the variable initialized... */
7545 /* We need to insinuate ourselves into the declarator in place
7546 of the CALL_EXPR. */
7547 TREE_OPERAND (last
, 0) = TREE_OPERAND (decl
, 0);
7549 declarator
= TREE_OPERAND (decl
, 0);
7551 init
= TREE_OPERAND (decl
, 1);
7553 decl
= start_decl (declarator
, declspecs
, 1, NULL_TREE
);
7554 finish_decl (decl
, init
, NULL_TREE
);
7557 innermost_code
= TREE_CODE (decl
);
7558 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
7559 ctype
= current_class_type
;
7561 && TREE_OPERAND (decl
, 0) == constructor_name_full (ctype
))
7562 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
7563 decl
= TREE_OPERAND (decl
, 0);
7564 if (ctype
!= NULL_TREE
7565 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
7566 && decl
== constructor_name (ctype
))
7568 return_type
= return_ctor
;
7569 ctor_return_type
= ctype
;
7574 case IDENTIFIER_NODE
:
7578 if (! IDENTIFIER_OPNAME_P (dname
)
7579 /* Linux headers use '__op'. Arrgh. */
7580 || IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
))
7581 name
= IDENTIFIER_POINTER (dname
);
7584 if (IDENTIFIER_TYPENAME_P (dname
))
7586 my_friendly_assert (flags
== NO_SPECIAL
, 154);
7587 flags
= TYPENAME_FLAG
;
7588 ctor_return_type
= TREE_TYPE (dname
);
7589 return_type
= return_conversion
;
7591 name
= operator_name_string (dname
);
7598 /* Parse error puts this typespec where
7599 a declarator should go. */
7600 error ("declarator name missing");
7601 dname
= TYPE_NAME (decl
);
7602 if (dname
&& TREE_CODE (dname
) == TYPE_DECL
)
7603 dname
= DECL_NAME (dname
);
7604 name
= dname
? IDENTIFIER_POINTER (dname
) : "<nameless>";
7605 declspecs
= temp_tree_cons (NULL_TREE
, decl
, declspecs
);
7612 /* Perform error checking, and convert class names to types.
7613 We may call grokdeclarator multiple times for the same
7614 tree structure, so only do the conversion once. In this
7615 case, we have exactly what we want for `ctype'. */
7616 tree cname
= TREE_OPERAND (decl
, 0);
7617 if (cname
== NULL_TREE
)
7619 /* Can't use IS_AGGR_TYPE because CNAME might not be a type. */
7620 else if (IS_AGGR_TYPE_CODE (TREE_CODE (cname
))
7621 || TREE_CODE (cname
) == UNINSTANTIATED_P_TYPE
)
7623 else if (! is_aggr_typedef (cname
, 1))
7625 TREE_OPERAND (decl
, 0) = NULL_TREE
;
7627 /* Must test TREE_OPERAND (decl, 1), in case user gives
7628 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
7629 else if (TREE_OPERAND (decl
, 1)
7630 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
7632 TREE_OPERAND (decl
, 0) = IDENTIFIER_TYPE_VALUE (cname
);
7634 else if (ctype
== NULL_TREE
)
7636 ctype
= IDENTIFIER_TYPE_VALUE (cname
);
7637 TREE_OPERAND (decl
, 0) = ctype
;
7639 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
7640 TREE_OPERAND (decl
, 0) = ctype
;
7643 if (! UNIQUELY_DERIVED_FROM_P (IDENTIFIER_TYPE_VALUE (cname
),
7646 cp_error ("type `%T' is not derived from type `%T'",
7647 IDENTIFIER_TYPE_VALUE (cname
), ctype
);
7648 TREE_OPERAND (decl
, 0) = NULL_TREE
;
7652 ctype
= IDENTIFIER_TYPE_VALUE (cname
);
7653 TREE_OPERAND (decl
, 0) = ctype
;
7658 && TREE_OPERAND (decl
, 1) == constructor_name_full (ctype
))
7659 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
7660 decl
= TREE_OPERAND (decl
, 1);
7663 if (TREE_CODE (decl
) == IDENTIFIER_NODE
7664 && constructor_name (ctype
) == decl
)
7666 return_type
= return_ctor
;
7667 ctor_return_type
= ctype
;
7669 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
7670 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
7671 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
7672 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
7674 return_type
= return_dtor
;
7675 ctor_return_type
= ctype
;
7677 decl
= TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
7688 return 0; /* We used to do a 155 abort here. */
7694 /* A function definition's declarator must have the form of
7695 a function declarator. */
7697 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
7700 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
7701 && innermost_code
!= CALL_EXPR
7702 && ! (ctype
&& declspecs
== NULL_TREE
))
7704 cp_error ("declaration of `%D' as non-function", dname
);
7705 return void_type_node
;
7708 /* Anything declared one level down from the top level
7709 must be one of the parameters of a function
7710 (because the body is at least two levels down). */
7712 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
7713 by not allowing C++ class definitions to specify their parameters
7714 with xdecls (must be spec.d in the parmlist).
7716 Since we now wait to push a class scope until we are sure that
7717 we are in a legitimate method context, we must set oldcname
7718 explicitly (since current_class_name is not yet alive).
7720 We also want to avoid calling this a PARM if it is in a namespace. */
7722 if (decl_context
== NORMAL
&& ! namespace_bindings_p ())
7724 struct binding_level
*b
= current_binding_level
;
7725 current_binding_level
= b
->level_chain
;
7726 if (current_binding_level
!= 0 && toplevel_bindings_p ())
7727 decl_context
= PARM
;
7728 current_binding_level
= b
;
7731 /* Look through the decl specs and record which ones appear.
7732 Some typespecs are defined as built-in typenames.
7733 Others, the ones that are modifiers of other types,
7734 are represented by bits in SPECBITS: set the bits for
7735 the modifiers that appear. Storage class keywords are also in SPECBITS.
7737 If there is a typedef name or a type, store the type in TYPE.
7738 This includes builtin typedefs such as `int'.
7740 Set EXPLICIT_INT if the type is `int' or `char' and did not
7741 come from a user typedef.
7743 Set LONGLONG if `long' is mentioned twice.
7745 For C++, constructors and destructors have their own fast treatment. */
7747 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
7752 /* Certain parse errors slip through. For example,
7753 `int class;' is not caught by the parser. Try
7754 weakly to recover here. */
7755 if (TREE_CODE (spec
) != TREE_LIST
)
7758 id
= TREE_VALUE (spec
);
7760 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
7762 if (id
== ridpointers
[(int) RID_INT
]
7763 || id
== ridpointers
[(int) RID_CHAR
]
7764 || id
== ridpointers
[(int) RID_BOOL
]
7765 || id
== ridpointers
[(int) RID_WCHAR
])
7769 if (id
== ridpointers
[(int) RID_BOOL
])
7770 error ("`bool' is now a keyword");
7772 cp_error ("extraneous `%T' ignored", id
);
7776 if (id
== ridpointers
[(int) RID_INT
])
7778 else if (id
== ridpointers
[(int) RID_CHAR
])
7780 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
7784 /* C++ aggregate types. */
7785 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
7788 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
7790 type
= IDENTIFIER_TYPE_VALUE (id
);
7794 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
7796 if (ridpointers
[i
] == id
)
7798 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
7800 if (pedantic
&& ! in_system_header
)
7801 pedwarn ("ANSI C++ does not support `long long'");
7803 error ("`long long long' is too long for GCC");
7807 else if (RIDBIT_SETP (i
, specbits
))
7808 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
7809 RIDBIT_SET (i
, specbits
);
7815 error ("two or more data types in declaration of `%s'", name
);
7816 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
7818 register tree t
= lookup_name (id
, 1);
7819 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
7820 error ("`%s' fails to be a typedef or built in type",
7821 IDENTIFIER_POINTER (id
));
7824 type
= TREE_TYPE (t
);
7825 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
7829 else if (TREE_CODE (id
) != ERROR_MARK
)
7830 /* Can't change CLASS nodes into RECORD nodes here! */
7836 typedef_type
= type
;
7838 /* No type at all: default to `int', and set EXPLICIT_INT
7839 because it was not a user-defined typedef.
7840 Except when we have a `typedef' inside a signature, in
7841 which case the type defaults to `unknown type' and is
7842 instantiated when assigning to a signature pointer or ref. */
7844 if (type
== NULL_TREE
7845 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
7846 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
7847 || RIDBIT_SETP (RID_LONG
, specbits
)
7848 || RIDBIT_SETP (RID_SHORT
, specbits
)))
7850 /* These imply 'int'. */
7851 type
= integer_type_node
;
7855 if (type
== NULL_TREE
)
7858 if (return_type
== return_dtor
)
7859 type
= void_type_node
;
7860 else if (return_type
== return_ctor
)
7861 type
= TYPE_POINTER_TO (ctor_return_type
);
7862 else if (return_type
== return_conversion
)
7863 type
= ctor_return_type
;
7864 else if (current_class_type
7865 && IS_SIGNATURE (current_class_type
)
7866 && (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
7867 || SIGNATURE_GROKKING_TYPEDEF (current_class_type
))
7868 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
7872 type
= copy_node (opaque_type_node
);
7874 /* access declaration */
7875 else if (decl_context
== FIELD
&& declarator
7876 && TREE_CODE (declarator
) == SCOPE_REF
)
7877 type
= void_type_node
;
7882 if (warn_return_type
7883 && return_type
== return_normal
)
7884 /* Save warning until we know what is really going on. */
7885 warn_about_return_type
= 1;
7887 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
7888 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
7889 else if (declspecs
== NULL_TREE
&&
7890 (innermost_code
!= CALL_EXPR
|| pedantic
))
7891 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type or storage class",
7893 type
= integer_type_node
;
7896 else if (return_type
== return_dtor
)
7898 error ("return type specification for destructor invalid");
7899 type
= void_type_node
;
7901 else if (return_type
== return_ctor
)
7903 error ("return type specification for constructor invalid");
7904 type
= TYPE_POINTER_TO (ctor_return_type
);
7906 else if (return_type
== return_conversion
)
7908 if (comptypes (type
, ctor_return_type
, 1) == 0)
7909 cp_error ("operator `%T' declared to return `%T'",
7910 ctor_return_type
, type
);
7912 cp_pedwarn ("return type specified for `operator %T'",
7915 type
= ctor_return_type
;
7917 /* Catch typedefs that only specify a type, like 'typedef int;'. */
7918 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && declarator
== NULL_TREE
)
7920 /* Template "this is a type" syntax; just ignore for now. */
7921 if (processing_template_defn
)
7922 return void_type_node
;
7927 /* Now process the modifiers that were specified
7928 and check for invalid combinations. */
7930 /* Long double is a special combination. */
7932 if (RIDBIT_SETP (RID_LONG
, specbits
)
7933 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
7935 RIDBIT_RESET (RID_LONG
, specbits
);
7936 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
7937 TYPE_VOLATILE (type
));
7940 /* Check all other uses of type modifiers. */
7942 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
7943 || RIDBIT_SETP (RID_SIGNED
, specbits
)
7944 || RIDBIT_SETP (RID_LONG
, specbits
)
7945 || RIDBIT_SETP (RID_SHORT
, specbits
))
7949 if (TREE_CODE (type
) == REAL_TYPE
)
7950 error ("short, signed or unsigned invalid for `%s'", name
);
7951 else if (TREE_CODE (type
) != INTEGER_TYPE
)
7952 error ("long, short, signed or unsigned invalid for `%s'", name
);
7953 else if (RIDBIT_SETP (RID_LONG
, specbits
)
7954 && RIDBIT_SETP (RID_SHORT
, specbits
))
7955 error ("long and short specified together for `%s'", name
);
7956 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
7957 || RIDBIT_SETP (RID_SHORT
, specbits
))
7959 error ("long or short specified with char for `%s'", name
);
7960 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
7961 || RIDBIT_SETP (RID_SHORT
, specbits
))
7962 && TREE_CODE (type
) == REAL_TYPE
)
7963 error ("long or short specified with floating type for `%s'", name
);
7964 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
7965 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
7966 error ("signed and unsigned given together for `%s'", name
);
7970 if (!explicit_int
&& !explicit_char
&& pedantic
)
7972 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
7974 if (flag_pedantic_errors
)
7979 /* Discard the type modifiers if they are invalid. */
7982 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
7983 RIDBIT_RESET (RID_SIGNED
, specbits
);
7984 RIDBIT_RESET (RID_LONG
, specbits
);
7985 RIDBIT_RESET (RID_SHORT
, specbits
);
7990 /* Decide whether an integer type is signed or not.
7991 Optionally treat bitfields as signed by default. */
7992 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
7993 /* Traditionally, all bitfields are unsigned. */
7994 || (bitfield
&& flag_traditional
)
7995 || (bitfield
&& ! flag_signed_bitfields
7996 && (explicit_int
|| explicit_char
7997 /* A typedef for plain `int' without `signed'
7998 can be controlled just like plain `int'. */
7999 || ! (typedef_decl
!= NULL_TREE
8000 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
8001 && TREE_CODE (type
) != ENUMERAL_TYPE
8002 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
8005 type
= long_long_unsigned_type_node
;
8006 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8007 type
= long_unsigned_type_node
;
8008 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8009 type
= short_unsigned_type_node
;
8010 else if (type
== char_type_node
)
8011 type
= unsigned_char_type_node
;
8012 else if (typedef_decl
)
8013 type
= unsigned_type (type
);
8015 type
= unsigned_type_node
;
8017 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8018 && type
== char_type_node
)
8019 type
= signed_char_type_node
;
8021 type
= long_long_integer_type_node
;
8022 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8023 type
= long_integer_type_node
;
8024 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8025 type
= short_integer_type_node
;
8027 /* Set CONSTP if this declaration is `const', whether by
8028 explicit specification or via a typedef.
8029 Likewise for VOLATILEP. */
8031 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
8032 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
8034 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
8036 /* This sort of redundancy is blessed in a footnote to the Sep 94 WP. */
8038 warning ("duplicate `const'");
8040 warning ("duplicate `volatile'");
8042 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
8043 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
8044 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
8045 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
8047 if (RIDBIT_SETP (RID_STATIC
, specbits
))
8048 staticp
= 1 + (decl_context
== FIELD
);
8050 if (virtualp
&& staticp
== 2)
8052 cp_error ("member `%D' cannot be declared both virtual and static",
8056 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
8057 RIDBIT_RESET (RID_FRIEND
, specbits
);
8059 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
8061 if (decl_context
== PARM
)
8063 error ("non-member `%s' cannot be declared `mutable'", name
);
8064 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8066 else if (friendp
|| decl_context
== TYPENAME
)
8068 error ("non-object member `%s' cannot be declared `mutable'", name
);
8069 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8073 error ("const `%s' cannot be declared `mutable'", name
);
8074 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8078 error ("static `%s' cannot be declared `mutable'", name
);
8079 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8082 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8084 error ("non-object member `%s' cannot be declared `mutable'", name
);
8085 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8087 /* Because local typedefs are parsed twice, we don't want this
8089 else if (decl_context
!= FIELD
)
8091 error ("non-member `%s' cannot be declared `mutable'", name
);
8092 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8097 /* Warn if two storage classes are given. Default to `auto'. */
8099 if (RIDBIT_ANY_SET (specbits
))
8101 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
8102 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
8103 if (decl_context
== PARM
&& nclasses
> 0)
8104 error ("storage class specifiers invalid in parameter declarations");
8105 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8107 if (decl_context
== PARM
)
8108 error ("typedef declaration invalid in parameter declaration");
8111 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
8112 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
8115 /* Give error if `virtual' is used outside of class declaration. */
8117 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
8119 error ("virtual outside class declaration");
8122 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
8124 error ("only members can be declared mutable");
8125 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8128 /* Static anonymous unions are dealt with here. */
8129 if (staticp
&& decl_context
== TYPENAME
8130 && TREE_CODE (declspecs
) == TREE_LIST
8131 && TREE_CODE (TREE_VALUE (declspecs
)) == UNION_TYPE
8132 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (TREE_VALUE (declspecs
))))
8133 decl_context
= FIELD
;
8135 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
8136 is used in a signature member function declaration. */
8137 if (decl_context
== FIELD
8138 && IS_SIGNATURE (current_class_type
)
8139 && RIDBIT_NOTSETP(RID_TYPEDEF
, specbits
)
8140 && !SIGNATURE_GROKKING_TYPEDEF (current_class_type
))
8144 error ("`const' specified for signature member function `%s'", name
);
8149 error ("`volatile' specified for signature member function `%s'",
8155 error ("`inline' specified for signature member function `%s'", name
);
8156 /* Later, we'll make signature member functions inline. */
8161 error ("`friend' declaration in signature definition");
8166 error ("`virtual' specified for signature member function `%s'",
8168 /* Later, we'll make signature member functions virtual. */
8173 /* Warn about storage classes that are invalid for certain
8174 kinds of declarations (parameters, typenames, etc.). */
8177 error ("multiple storage classes in declaration of `%s'", name
);
8178 else if (decl_context
!= NORMAL
&& nclasses
> 0)
8180 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
8181 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
8182 || RIDBIT_SETP (RID_AUTO
, specbits
)))
8184 else if (decl_context
== FIELD
8185 && RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8187 /* Processing a typedef declaration nested within a class type
8189 register tree scanner
;
8190 register tree previous_declspec
;
8194 error ("typedef declaration includes an initializer");
8196 /* To process a class-local typedef declaration, we descend down
8197 the chain of declspecs looking for the `typedef' spec. When
8198 we find it, we replace it with `static', and then recursively
8199 call `grokdeclarator' with the original declarator and with
8200 the newly adjusted declspecs. This call should return a
8201 FIELD_DECL node with the TREE_TYPE (and other parts) set
8202 appropriately. We can then just change the TREE_CODE on that
8203 from FIELD_DECL to TYPE_DECL and we're done. */
8205 for (previous_declspec
= NULL_TREE
, scanner
= declspecs
;
8207 previous_declspec
= scanner
, scanner
= TREE_CHAIN (scanner
))
8209 if (TREE_VALUE (scanner
) == ridpointers
[(int) RID_TYPEDEF
])
8213 if (previous_declspec
)
8214 TREE_CHAIN (previous_declspec
) = TREE_CHAIN (scanner
);
8216 declspecs
= TREE_CHAIN (scanner
);
8218 declspecs
= tree_cons (NULL_TREE
, ridpointers
[(int) RID_STATIC
],
8221 /* In the recursive call to grokdeclarator we need to know
8222 whether we are working on a signature-local typedef. */
8223 if (IS_SIGNATURE (current_class_type
))
8224 SIGNATURE_GROKKING_TYPEDEF (current_class_type
) = 1;
8227 grokdeclarator (declarator
, declspecs
, FIELD
, 0, NULL_TREE
);
8229 if (previous_declspec
)
8230 TREE_CHAIN (previous_declspec
) = scanner
;
8232 if (loc_typedecl
!= error_mark_node
)
8234 register int i
= sizeof (struct lang_decl_flags
) / sizeof (int);
8237 TREE_SET_CODE (loc_typedecl
, TYPE_DECL
);
8238 /* This is the same field as DECL_ARGUMENTS, which is set for
8239 function typedefs by the above grokdeclarator. */
8240 DECL_NESTED_TYPENAME (loc_typedecl
) = 0;
8242 pi
= (int *) permalloc (sizeof (struct lang_decl_flags
));
8245 DECL_LANG_SPECIFIC (loc_typedecl
) = (struct lang_decl
*) pi
;
8248 if (IS_SIGNATURE (current_class_type
))
8250 SIGNATURE_GROKKING_TYPEDEF (current_class_type
) = 0;
8251 if (loc_typedecl
!= error_mark_node
&& opaque_typedef
)
8252 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
8255 return loc_typedecl
;
8257 else if (decl_context
== FIELD
8258 && (! IS_SIGNATURE (current_class_type
)
8259 || SIGNATURE_GROKKING_TYPEDEF (current_class_type
))
8260 /* C++ allows static class elements */
8261 && RIDBIT_SETP (RID_STATIC
, specbits
))
8262 /* C++ also allows inlines and signed and unsigned elements,
8263 but in those cases we don't come in here. */
8267 if (decl_context
== FIELD
)
8269 tree tmp
= NULL_TREE
;
8270 register int op
= 0;
8274 tmp
= TREE_OPERAND (declarator
, 0);
8275 op
= IDENTIFIER_OPNAME_P (tmp
);
8277 error ("storage class specified for %s `%s'",
8278 IS_SIGNATURE (current_class_type
)
8280 ? "signature member operator"
8281 : "signature member function")
8282 : (op
? "member operator" : "field"),
8283 op
? operator_name_string (tmp
) : name
);
8286 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
8287 ? "storage class specified for parameter `%s'"
8288 : "storage class specified for typename"), name
);
8289 RIDBIT_RESET (RID_REGISTER
, specbits
);
8290 RIDBIT_RESET (RID_AUTO
, specbits
);
8291 RIDBIT_RESET (RID_EXTERN
, specbits
);
8293 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
8295 RIDBIT_RESET (RID_STATIC
, specbits
);
8300 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
8302 if (toplevel_bindings_p ())
8304 /* It's common practice (and completely valid) to have a const
8305 be initialized and declared extern. */
8307 warning ("`%s' initialized and declared `extern'", name
);
8310 error ("`%s' has both `extern' and initializer", name
);
8312 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
8313 && ! toplevel_bindings_p ())
8314 error ("nested function `%s' declared `extern'", name
);
8315 else if (toplevel_bindings_p ())
8317 if (RIDBIT_SETP (RID_AUTO
, specbits
))
8318 error ("top-level declaration of `%s' specifies `auto'", name
);
8320 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
8321 error ("top-level declaration of `%s' specifies `register'", name
);
8324 /* I'm not sure under what circumstances we should turn
8325 on the extern bit, and under what circumstances we should
8326 warn if other bits are turned on. */
8327 if (decl_context
== NORMAL
8328 && RIDBIT_NOSETP (RID_EXTERN
, specbits
)
8329 && ! root_lang_context_p ())
8331 RIDBIT_SET (RID_EXTERN
, specbits
);
8336 /* Now figure out the structure of the declarator proper.
8337 Descend through it, creating more complex types, until we reach
8338 the declared identifier (or NULL_TREE, in an absolute declarator). */
8340 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
)
8342 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
8343 an INDIRECT_REF (for *...),
8344 a CALL_EXPR (for ...(...)),
8345 an identifier (for the name being declared)
8346 or a null pointer (for the place in an absolute declarator
8347 where the name was omitted).
8348 For the last two cases, we have just exited the loop.
8350 For C++ it could also be
8351 a SCOPE_REF (for class :: ...). In this case, we have converted
8352 sensible names to types, and those are the values we use to
8353 qualify the member name.
8354 an ADDR_EXPR (for &...),
8355 a BIT_NOT_EXPR (for destructors)
8357 At this point, TYPE is the type of elements of an array,
8358 or for a function to return, or for a pointer to point to.
8359 After this sequence of ifs, TYPE is the type of the
8360 array or function or pointer, and DECLARATOR has had its
8361 outermost layer removed. */
8363 if (TREE_CODE (type
) == ERROR_MARK
)
8365 if (TREE_CODE (declarator
) == SCOPE_REF
)
8366 declarator
= TREE_OPERAND (declarator
, 1);
8368 declarator
= TREE_OPERAND (declarator
, 0);
8371 if (quals
!= NULL_TREE
8372 && (declarator
== NULL_TREE
8373 || TREE_CODE (declarator
) != SCOPE_REF
))
8375 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
8376 ctype
= TYPE_METHOD_BASETYPE (type
);
8377 if (ctype
!= NULL_TREE
)
8379 #if 0 /* not yet, should get fixed properly later */
8380 tree dummy
= make_type_decl (NULL_TREE
, type
);
8382 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
8384 ctype
= grok_method_quals (ctype
, dummy
, quals
);
8385 type
= TREE_TYPE (dummy
);
8389 switch (TREE_CODE (declarator
))
8393 register tree itype
= NULL_TREE
;
8394 register tree size
= TREE_OPERAND (declarator
, 1);
8395 /* The index is a signed object `sizetype' bits wide. */
8396 tree index_type
= signed_type (sizetype
);
8398 declarator
= TREE_OPERAND (declarator
, 0);
8400 /* Check for some types that there cannot be arrays of. */
8402 if (TYPE_MAIN_VARIANT (type
) == void_type_node
)
8404 cp_error ("declaration of `%D' as array of voids", dname
);
8405 type
= error_mark_node
;
8408 if (TREE_CODE (type
) == FUNCTION_TYPE
)
8410 cp_error ("declaration of `%D' as array of functions", dname
);
8411 type
= error_mark_node
;
8414 /* ARM $8.4.3: Since you can't have a pointer to a reference,
8415 you can't have arrays of references. If we allowed them,
8416 then we'd be saying x[i] is valid for an array x, but
8417 then you'd have to ask: what does `*(x + i)' mean? */
8418 if (TREE_CODE (type
) == REFERENCE_TYPE
)
8420 if (decl_context
== TYPENAME
)
8421 cp_error ("cannot make arrays of references");
8423 cp_error ("declaration of `%D' as array of references",
8425 type
= error_mark_node
;
8428 if (TREE_CODE (type
) == OFFSET_TYPE
)
8430 cp_error ("declaration of `%D' as array of data members",
8432 type
= error_mark_node
;
8435 if (TREE_CODE (type
) == METHOD_TYPE
)
8437 cp_error ("declaration of `%D' as array of function members",
8439 type
= error_mark_node
;
8442 if (size
== error_mark_node
)
8443 type
= error_mark_node
;
8445 if (type
== error_mark_node
)
8450 /* Must suspend_momentary here because the index
8451 type may need to live until the end of the function.
8452 For example, it is used in the declaration of a
8453 variable which requires destructing at the end of
8454 the function; then build_vec_delete will need this
8456 int yes
= suspend_momentary ();
8457 /* might be a cast */
8458 if (TREE_CODE (size
) == NOP_EXPR
8459 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
8460 size
= TREE_OPERAND (size
, 0);
8462 /* If this is a template parameter, it'll be constant, but
8463 we don't know what the value is yet. */
8464 if (TREE_CODE (size
) == TEMPLATE_CONST_PARM
)
8465 goto dont_grok_size
;
8467 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
8468 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
8470 cp_error ("size of array `%D' has non-integer type",
8472 size
= integer_one_node
;
8474 if (TREE_READONLY_DECL_P (size
))
8475 size
= decl_constant_value (size
);
8476 if (pedantic
&& integer_zerop (size
))
8477 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
8478 if (TREE_CONSTANT (size
))
8480 constant_expression_warning (size
);
8481 if (INT_CST_LT (size
, integer_zero_node
))
8483 cp_error ("size of array `%D' is negative", dname
);
8484 size
= integer_one_node
;
8492 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
8495 cp_pedwarn ("ANSI C++ forbids variable-size array");
8497 /* Make sure the array size remains visibly nonconstant
8498 even if it is (eg) a const variable with known value. */
8504 fold (build_binary_op (MINUS_EXPR
,
8505 convert (index_type
, size
),
8506 convert (index_type
,
8507 integer_one_node
), 1));
8508 if (! TREE_CONSTANT (itype
))
8509 itype
= variable_size (itype
);
8510 itype
= build_index_type (itype
);
8511 resume_momentary (yes
);
8514 /* Build the array type itself, then merge any constancy or
8515 volatility into the target type. We must do it in this order
8516 to ensure that the TYPE_MAIN_VARIANT field of the array type
8517 is set correctly. */
8519 type
= build_cplus_array_type (type
, itype
);
8520 if (constp
|| volatilep
)
8521 type
= cp_build_type_variant (type
, constp
, volatilep
);
8531 tree inner_parms
= TREE_OPERAND (declarator
, 1);
8532 tree inner_decl
= TREE_OPERAND (declarator
, 0);
8534 /* Declaring a function type.
8535 Make sure we have a valid type for the function to return. */
8537 /* Is this an error? Should they be merged into TYPE here? */
8538 if (pedantic
&& (constp
|| volatilep
))
8539 pedwarn ("function declared to return const or volatile result");
8541 /* Merge any constancy or volatility into the function return
8544 if (constp
|| volatilep
)
8546 type
= cp_build_type_variant (type
, constp
, volatilep
);
8547 if (IS_AGGR_TYPE (type
))
8548 build_pointer_type (type
);
8554 /* Warn about some types functions can't return. */
8556 if (TREE_CODE (type
) == FUNCTION_TYPE
)
8558 error ("`%s' declared as function returning a function", name
);
8559 type
= integer_type_node
;
8561 if (TREE_CODE (type
) == ARRAY_TYPE
)
8563 error ("`%s' declared as function returning an array", name
);
8564 type
= integer_type_node
;
8567 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
8568 inner_decl
= TREE_OPERAND (inner_decl
, 1);
8570 /* Pick up type qualifiers which should be applied to `this'. */
8571 quals
= TREE_OPERAND (declarator
, 2);
8573 /* Say it's a definition only for the CALL_EXPR
8574 closest to the identifier. */
8576 inner_decl
&& (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
8577 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
8579 if (ctype
== NULL_TREE
8580 && decl_context
== FIELD
8582 && (friendp
== 0 || dname
== current_class_name
))
8583 ctype
= current_class_type
;
8585 if (ctype
&& return_type
== return_conversion
)
8586 TYPE_HAS_CONVERSION (ctype
) = 1;
8587 if (ctype
&& constructor_name (ctype
) == dname
)
8589 /* We are within a class's scope. If our declarator name
8590 is the same as the class name, and we are defining
8591 a function, then it is a constructor/destructor, and
8592 therefore returns a void type. */
8594 if (flags
== DTOR_FLAG
)
8596 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
8597 not be declared const or volatile. A destructor
8598 may not be static. */
8600 error ("destructor cannot be static member function");
8603 error ("destructors cannot be declared `const' or `volatile'");
8604 return void_type_node
;
8606 if (decl_context
== FIELD
)
8608 if (! member_function_or_else (ctype
, current_class_type
,
8609 "destructor for alien class `%s' cannot be a member"))
8610 return void_type_node
;
8613 else /* it's a constructor. */
8617 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
8618 not be declared const or volatile. A constructor may
8619 not be virtual. A constructor may not be static. */
8621 error ("constructor cannot be static member function");
8624 pedwarn ("constructors cannot be declared virtual");
8629 error ("constructors cannot be declared `const' or `volatile'");
8630 return void_type_node
;
8633 RID_BIT_TYPE tmp_bits
;
8634 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof(RID_BIT_TYPE
));
8635 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
8636 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
8637 if (RIDBIT_ANY_SET (tmp_bits
))
8638 error ("return value type specifier for constructor ignored");
8640 type
= TYPE_POINTER_TO (ctype
);
8641 if (decl_context
== FIELD
&&
8642 IS_SIGNATURE (current_class_type
))
8644 error ("constructor not allowed in signature");
8645 return void_type_node
;
8647 else if (decl_context
== FIELD
)
8649 if (! member_function_or_else (ctype
, current_class_type
,
8650 "constructor for alien class `%s' cannot be member"))
8651 return void_type_node
;
8652 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
8653 if (return_type
!= return_ctor
)
8657 if (decl_context
== FIELD
)
8663 error ("can't initialize friend function `%s'", name
);
8666 /* Cannot be both friend and virtual. */
8667 error ("virtual functions cannot be friends");
8668 RIDBIT_RESET (RID_FRIEND
, specbits
);
8671 if (decl_context
== NORMAL
)
8672 error ("friend declaration not in class definition");
8673 if (current_function_decl
&& funcdef_flag
)
8674 cp_error ("can't define friend function `%s' in a local class definition",
8678 /* Traditionally, declaring return type float means double. */
8680 if (flag_traditional
8681 && TYPE_MAIN_VARIANT (type
) == float_type_node
)
8683 type
= build_type_variant (double_type_node
,
8684 TYPE_READONLY (type
),
8685 TYPE_VOLATILE (type
));
8688 /* Construct the function type and go to the next
8689 inner layer of declarator. */
8691 declarator
= TREE_OPERAND (declarator
, 0);
8693 /* FIXME: This is where default args should be fully
8696 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
8700 /* Get past destructors, etc.
8701 We know we have one because FLAGS will be non-zero.
8703 Complain about improper parameter lists here. */
8704 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
8706 declarator
= TREE_OPERAND (declarator
, 0);
8708 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
8709 arg_types
= void_list_node
;
8710 else if (arg_types
== NULL_TREE
8711 || arg_types
!= void_list_node
)
8713 error ("destructors cannot be specified with parameters");
8714 arg_types
= void_list_node
;
8719 /* ANSI seems to say that `const int foo ();'
8720 does not make the function foo const. */
8721 type
= build_function_type (type
,
8722 flag_traditional
? 0 : arg_types
);
8728 /* Filter out pointers-to-references and references-to-references.
8729 We can get these if a TYPE_DECL is used. */
8731 if (TREE_CODE (type
) == REFERENCE_TYPE
)
8733 error ("cannot declare %s to references",
8734 TREE_CODE (declarator
) == ADDR_EXPR
8735 ? "references" : "pointers");
8736 declarator
= TREE_OPERAND (declarator
, 0);
8740 if (TREE_CODE (type
) == OFFSET_TYPE
8741 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
8742 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
8744 cp_error ("cannot declare pointer to `%#T' member",
8746 type
= TREE_TYPE (type
);
8749 /* Merge any constancy or volatility into the target type
8752 if (constp
|| volatilep
)
8754 /* A const or volatile signature pointer/reference is
8755 pointing to a const or volatile object, i.e., the
8756 `optr' is const or volatile, respectively, not the
8757 signature pointer/reference itself. */
8758 if (! IS_SIGNATURE (type
))
8760 type
= cp_build_type_variant (type
, constp
, volatilep
);
8761 if (IS_AGGR_TYPE (type
))
8762 build_pointer_type (type
);
8768 if (IS_SIGNATURE (type
))
8770 if (TREE_CODE (declarator
) == ADDR_EXPR
)
8772 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
8773 && TYPE_SIZE (type
))
8774 cp_warning ("empty signature `%T' used in signature reference declaration",
8777 type
= build_signature_reference_type (type
,
8780 sorry ("signature reference");
8786 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
8787 && TYPE_SIZE (type
))
8788 cp_warning ("empty signature `%T' used in signature pointer declaration",
8790 type
= build_signature_pointer_type (type
,
8796 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
8798 if (TREE_CODE (type
) == FUNCTION_TYPE
)
8800 error ("cannot declare references to functions; use pointer to function instead");
8801 type
= build_pointer_type (type
);
8805 if (TYPE_MAIN_VARIANT (type
) == void_type_node
)
8806 error ("invalid type: `void &'");
8808 type
= build_reference_type (type
);
8811 else if (TREE_CODE (type
) == METHOD_TYPE
)
8813 type
= build_ptrmemfunc_type (build_pointer_type (type
));
8816 type
= build_pointer_type (type
);
8818 /* Process a list of type modifier keywords (such as
8819 const or volatile) that were given inside the `*' or `&'. */
8821 if (TREE_TYPE (declarator
))
8823 register tree typemodlist
;
8825 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
8826 typemodlist
= TREE_CHAIN (typemodlist
))
8828 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
8830 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
8835 error ("invalid type modifier within %s declarator",
8836 TREE_CODE (declarator
) == ADDR_EXPR
8837 ? "reference" : "pointer");
8841 pedwarn ("duplicate `const'");
8843 pedwarn ("duplicate `volatile'");
8844 if (TREE_CODE (declarator
) == ADDR_EXPR
8845 && (constp
|| volatilep
))
8848 pedwarn ("discarding `const' applied to a reference");
8850 pedwarn ("discarding `volatile' applied to a reference");
8851 constp
= volatilep
= 0;
8854 declarator
= TREE_OPERAND (declarator
, 0);
8860 /* We have converted type names to NULL_TREE if the
8861 name was bogus, or to a _TYPE node, if not.
8863 The variable CTYPE holds the type we will ultimately
8864 resolve to. The code here just needs to build
8865 up appropriate member types. */
8866 tree sname
= TREE_OPERAND (declarator
, 1);
8867 /* Destructors can have their visibilities changed as well. */
8868 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
8869 sname
= TREE_OPERAND (sname
, 0);
8871 if (TREE_COMPLEXITY (declarator
) == 0)
8872 /* This needs to be here, in case we are called
8873 multiple times. */ ;
8874 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
8875 /* don't fall out into global scope. Hides real bug? --eichin */ ;
8876 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
8878 /* This pop_nested_class corresponds to the
8879 push_nested_class used to push into class scope for
8880 parsing the argument list of a function decl, in
8882 pop_nested_class (1);
8883 TREE_COMPLEXITY (declarator
) = current_class_depth
;
8886 my_friendly_abort (16);
8888 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
8890 /* We had a reference to a global decl, or
8891 perhaps we were given a non-aggregate typedef,
8892 in which case we cleared this out, and should just
8893 keep going as though it wasn't there. */
8897 ctype
= TREE_OPERAND (declarator
, 0);
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 (TYPE_SIZE (ctype
) != NULL_TREE
8933 || (RIDBIT_SETP (RID_TYPEDEF
, specbits
)))
8936 /* have to move this code elsewhere in this function.
8937 this code is used for i.e., typedef int A::M; M *pm;
8939 It is? How? jason 10/2/94 */
8941 if (explicit_int
== -1 && decl_context
== FIELD
8942 && funcdef_flag
== 0)
8944 /* The code in here should only be used to build
8945 stuff that will be grokked as access decls. */
8946 t
= lookup_field (ctype
, sname
, 0, 0);
8949 t
= build_lang_field_decl (FIELD_DECL
, build_nt (SCOPE_REF
, ctype
, t
), type
);
8950 DECL_INITIAL (t
) = init
;
8953 /* No such field, try member functions. */
8954 t
= lookup_fnfields (TYPE_BINFO (ctype
), sname
, 0);
8957 if (flags
== DTOR_FLAG
)
8959 else if (CLASSTYPE_METHOD_VEC (ctype
)
8960 && TREE_VALUE (t
) == TREE_VEC_ELT (CLASSTYPE_METHOD_VEC (ctype
), 0))
8962 /* Don't include destructor with constructors. */
8963 t
= DECL_CHAIN (TREE_VALUE (t
));
8965 cp_error ("`%T' does not have any constructors",
8967 t
= build_tree_list (NULL_TREE
, t
);
8969 t
= build_lang_field_decl (FIELD_DECL
, build_nt (SCOPE_REF
, ctype
, t
), type
);
8970 DECL_INITIAL (t
) = init
;
8975 ("field `%D' is not a member of structure `%T'",
8979 if (current_class_type
)
8981 cp_error ("cannot declare member `%T::%s' within `%T'",
8982 ctype
, name
, current_class_type
);
8983 return void_type_node
;
8985 type
= build_offset_type (ctype
, type
);
8987 else if (uses_template_parms (ctype
))
8990 if (TREE_CODE (type
) == FUNCTION_TYPE
)
8992 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
8994 TYPE_ARG_TYPES (type
));
9000 cp_error ("structure `%T' not yet defined", ctype
);
9001 return error_mark_node
;
9006 else if (TREE_CODE (sname
) == SCOPE_REF
)
9007 my_friendly_abort (17);
9011 declarator
= TREE_OPERAND (declarator
, 1);
9012 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
9013 /* In this case, we will deal with it later. */
9017 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9018 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
), TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9020 type
= build_offset_type (ctype
, type
);
9027 declarator
= TREE_OPERAND (declarator
, 0);
9033 declarator
= NULL_TREE
;
9037 declarator
= NULL_TREE
;
9041 my_friendly_abort (158);
9047 error ("only constructors can be declared `explicit'");
9051 /* Now TYPE has the actual type. */
9053 /* If this is declaring a typedef name, return a TYPE_DECL. */
9055 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
9059 /* Note that the grammar rejects storage classes
9060 in typenames, fields or parameters. */
9061 if (constp
|| volatilep
)
9062 type
= cp_build_type_variant (type
, constp
, volatilep
);
9064 /* If the user declares "struct {...} foo" then `foo' will have
9065 an anonymous name. Fill that name in now. Nothing can
9066 refer to it, so nothing needs know about the name change.
9067 The TYPE_NAME field was filled in by build_struct_xref. */
9068 if (type
!= error_mark_node
9070 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
9071 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
9073 /* replace the anonymous name with the real name everywhere. */
9074 lookup_tag_reverse (type
, declarator
);
9075 TYPE_IDENTIFIER (type
) = declarator
;
9077 if (TYPE_LANG_SPECIFIC (type
))
9078 TYPE_WAS_ANONYMOUS (type
) = 1;
9081 tree d
= TYPE_NAME (type
), c
= DECL_CONTEXT (d
);
9084 set_nested_typename (d
, 0, declarator
, type
);
9085 else if (TREE_CODE (c
) == FUNCTION_DECL
)
9086 set_nested_typename (d
, DECL_ASSEMBLER_NAME (c
),
9089 set_nested_typename (d
, TYPE_NESTED_NAME (c
), declarator
, type
);
9091 DECL_ASSEMBLER_NAME (d
) = DECL_NAME (d
);
9092 DECL_ASSEMBLER_NAME (d
)
9093 = get_identifier (build_overload_name (type
, 1, 1));
9097 #if 0 /* not yet, should get fixed properly later */
9098 decl
= make_type_decl (declarator
, type
);
9100 decl
= build_decl (TYPE_DECL
, declarator
, type
);
9102 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
9104 cp_error_at ("typedef name may not be class-qualified", decl
);
9109 if (ctype
== NULL_TREE
)
9111 if (TREE_CODE (type
) != METHOD_TYPE
)
9112 cp_error_at ("invalid type qualifier for non-method type", decl
);
9114 ctype
= TYPE_METHOD_BASETYPE (type
);
9116 if (ctype
!= NULL_TREE
)
9117 grok_method_quals (ctype
, decl
, quals
);
9120 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
9121 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
9122 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
9124 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9126 error ("non-object member `%s' cannot be declared mutable", name
);
9132 /* Detect the case of an array type of unspecified size
9133 which came, as such, direct from a typedef name.
9134 We must copy the type, so that each identifier gets
9135 a distinct type, so that each identifier's size can be
9136 controlled separately by its own initializer. */
9138 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
9139 && TYPE_DOMAIN (type
) == NULL_TREE
)
9141 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
9144 /* If this is a type name (such as, in a cast or sizeof),
9145 compute the type and return it now. */
9147 if (decl_context
== TYPENAME
)
9149 /* Note that the grammar rejects storage classes
9150 in typenames, fields or parameters. */
9151 if (constp
|| volatilep
)
9152 if (IS_SIGNATURE (type
))
9153 error ("`const' or `volatile' specified with signature type");
9155 type
= cp_build_type_variant (type
, constp
, volatilep
);
9157 /* Special case: "friend class foo" looks like a TYPENAME context. */
9162 cp_error ("`volatile' specified for friend class declaration");
9167 cp_error ("`inline' specified for friend class declaration");
9171 /* Only try to do this stuff if we didn't already give up. */
9172 if (type
!= integer_type_node
)
9174 /* A friendly class? */
9175 if (current_class_type
)
9176 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
9178 error ("trying to make class `%s' a friend of global scope",
9179 TYPE_NAME_STRING (type
));
9180 type
= void_type_node
;
9185 #if 0 /* not yet, should get fixed properly later */
9186 tree dummy
= make_type_decl (declarator
, type
);
9188 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
9190 if (ctype
== NULL_TREE
)
9192 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
9193 ctype
= TYPE_METHOD_BASETYPE (type
);
9195 grok_method_quals (ctype
, dummy
, quals
);
9196 type
= TREE_TYPE (dummy
);
9201 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
9202 && decl_context
!= CATCHPARM
9203 && TREE_CODE (type
) != UNION_TYPE
9206 cp_error ("abstract declarator `%T' used as declaration", type
);
9207 declarator
= make_anon_name ();
9210 /* `void' at top level (not within pointer)
9211 is allowed only in typedefs or type names.
9212 We don't complain about parms either, but that is because
9213 a better error message can be made later. */
9215 if (TYPE_MAIN_VARIANT (type
) == void_type_node
&& decl_context
!= PARM
)
9218 error ("unnamed variable or field declared void");
9219 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9221 if (IDENTIFIER_OPNAME_P (declarator
))
9222 #if 0 /* How could this happen? */
9223 error ("operator `%s' declared void",
9224 operator_name_string (declarator
));
9226 my_friendly_abort (356);
9229 error ("variable or field `%s' declared void", name
);
9232 error ("variable or field declared void");
9233 type
= integer_type_node
;
9236 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
9237 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
9242 if (decl_context
== PARM
)
9245 error ("cannot use `::' in parameter declaration");
9247 /* A parameter declared as an array of T is really a pointer to T.
9248 One declared as a function is really a pointer to a function.
9249 One declared as a member is really a pointer to member. */
9251 if (TREE_CODE (type
) == ARRAY_TYPE
)
9253 /* Transfer const-ness of array into that of type pointed to. */
9254 type
= build_pointer_type
9255 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
9256 volatilep
= constp
= 0;
9258 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9259 type
= build_pointer_type (type
);
9260 else if (TREE_CODE (type
) == OFFSET_TYPE
)
9261 type
= build_pointer_type (type
);
9262 else if (type
== void_type_node
&& declarator
)
9264 error ("declaration of `%s' as void", name
);
9268 decl
= build_decl (PARM_DECL
, declarator
, type
);
9270 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
9271 inlinep
, friendp
, raises
!= NULL_TREE
);
9272 if (current_class_type
9273 && IS_SIGNATURE (current_class_type
))
9276 error ("parameter of signature member function declared `inline'");
9277 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9278 error ("parameter of signature member function declared `auto'");
9279 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
9280 error ("parameter of signature member function declared `register'");
9283 /* Compute the type actually passed in the parmlist,
9284 for the case where there is no prototype.
9285 (For example, shorts and chars are passed as ints.)
9286 When there is a prototype, this is overridden later. */
9288 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
9290 else if (decl_context
== FIELD
)
9292 if (type
== error_mark_node
)
9294 /* Happens when declaring arrays of sizes which
9295 are error_mark_node, for example. */
9298 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9304 if (ctype
== NULL_TREE
)
9305 ctype
= current_class_type
;
9307 if (ctype
== NULL_TREE
)
9309 cp_error ("can't make `%D' into a method -- not in a class",
9311 return void_type_node
;
9314 /* ``A union may [ ... ] not [ have ] virtual functions.''
9316 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
9318 cp_error ("function `%D' declared virtual inside a union",
9320 return void_type_node
;
9323 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
9324 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
9325 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
9326 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
9330 cp_error ("`%D' cannot be declared virtual, since it is always static",
9335 else if (staticp
< 2)
9336 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9337 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9340 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
9341 publicp
= (! friendp
9342 || RIDBIT_SETP (RID_EXTERN
, specbits
)
9343 || ! (funcdef_flag
< 0 || inlinep
));
9344 decl
= grokfndecl (ctype
, type
, declarator
,
9345 virtualp
, flags
, quals
,
9346 raises
, friendp
? -1 : 0, publicp
, inlinep
);
9347 if (decl
== NULL_TREE
)
9349 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
9352 DECL_NONCONVERTING_P (decl
) = 1;
9354 else if (TREE_CODE (type
) == METHOD_TYPE
)
9356 /* We only get here for friend declarations of
9357 members of other classes. */
9358 /* All method decls are public, so tell grokfndecl to set
9359 TREE_PUBLIC, also. */
9360 decl
= grokfndecl (ctype
, type
, declarator
,
9361 virtualp
, flags
, quals
,
9362 raises
, friendp
? -1 : 0, 1, 0);
9363 if (decl
== NULL_TREE
)
9366 else if (TYPE_SIZE (type
) == NULL_TREE
&& !staticp
9367 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
9370 cp_error ("field `%D' has incomplete type", declarator
);
9372 cp_error ("name `%T' has incomplete type", type
);
9374 /* If we're instantiating a template, tell them which
9375 instantiation made the field's type be incomplete. */
9376 if (current_class_type
9377 && TYPE_NAME (current_class_type
)
9378 && IDENTIFIER_TEMPLATE (DECL_NAME (TYPE_NAME (current_class_type
)))
9379 && declspecs
&& TREE_VALUE (declspecs
)
9380 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
9381 cp_error (" in instantiation of template `%T'",
9382 current_class_type
);
9384 type
= error_mark_node
;
9391 error ("`%s' is neither function nor method; cannot be declared friend",
9392 IDENTIFIER_POINTER (declarator
));
9400 /* Friends are treated specially. */
9401 if (ctype
== current_class_type
)
9402 warning ("member functions are implicitly friends of their class");
9406 if (decl
&& DECL_NAME (decl
))
9407 t
= do_friend (ctype
, declarator
, decl
,
9408 last_function_parms
, flags
, quals
);
9409 if (t
&& funcdef_flag
)
9412 return void_type_node
;
9416 /* Structure field. It may not be a function, except for C++ */
9418 if (decl
== NULL_TREE
)
9422 /* Motion 10 at San Diego: If a static const integral data
9423 member is initialized with an integral constant
9424 expression, the initializer may appear either in the
9425 declaration (within the class), or in the definition,
9426 but not both. If it appears in the class, the member is
9427 a member constant. The file-scope definition is always
9434 cp_pedwarn ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
9437 else if (! INTEGRAL_TYPE_P (type
))
9438 cp_pedwarn ("ANSI C++ forbids member constant `%D' of non-integral type `%T'", declarator
, type
);
9442 /* Note that initialization of const members is prohibited
9443 by the draft ANSI standard, though it appears to be in
9444 common practice. 12.6.2: The argument list is used to
9445 initialize the named nonstatic member.... This (or an
9446 initializer list) is the only way to initialize
9447 nonstatic const and reference members. */
9448 else if (pedantic
|| ! constp
)
9449 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
9450 constp
? "const member" : "member", declarator
);
9453 if (staticp
|| (constp
&& initialized
))
9455 /* C++ allows static class members.
9456 All other work for this is done by grokfield.
9457 This VAR_DECL is built by build_lang_field_decl.
9458 All other VAR_DECLs are built by build_decl. */
9459 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
9460 TREE_STATIC (decl
) = 1;
9461 /* In class context, 'static' means public access. */
9462 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = !!staticp
;
9466 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
9467 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9469 DECL_MUTABLE_P (decl
) = 1;
9470 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9474 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
9475 inlinep
, friendp
, raises
!= NULL_TREE
);
9478 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
9480 tree original_name
= declarator
;
9486 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9487 error ("storage class `auto' invalid for function `%s'", name
);
9488 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
9489 error ("storage class `register' invalid for function `%s'", name
);
9491 /* Function declaration not at top level.
9492 Storage classes other than `extern' are not allowed
9493 and `extern' makes no difference. */
9494 if (! toplevel_bindings_p ()
9495 && ! processing_template_decl
9496 && (RIDBIT_SETP (RID_STATIC
, specbits
)
9497 || RIDBIT_SETP (RID_INLINE
, specbits
))
9500 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9501 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
9503 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
9506 if (ctype
== NULL_TREE
)
9510 error ("virtual non-class function `%s'", name
);
9514 if (current_lang_name
== lang_name_cplusplus
9515 && ! (IDENTIFIER_LENGTH (original_name
) == 4
9516 && IDENTIFIER_POINTER (original_name
)[0] == 'm'
9517 && strcmp (IDENTIFIER_POINTER (original_name
), "main") == 0)
9518 && ! (IDENTIFIER_LENGTH (original_name
) > 10
9519 && IDENTIFIER_POINTER (original_name
)[0] == '_'
9520 && IDENTIFIER_POINTER (original_name
)[1] == '_'
9521 && strncmp (IDENTIFIER_POINTER (original_name
)+2, "builtin_", 8) == 0))
9522 /* Plain overloading: will not be grok'd by grokclassfn. */
9523 declarator
= build_decl_overload (dname
, TYPE_ARG_TYPES (type
), 0);
9525 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
9526 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9527 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9529 /* Record presence of `static'. In C++, `inline' implies `static'. */
9530 publicp
= (ctype
!= NULL_TREE
9531 || RIDBIT_SETP (RID_EXTERN
, specbits
)
9532 || (!RIDBIT_SETP (RID_STATIC
, specbits
)
9533 && !RIDBIT_SETP (RID_INLINE
, specbits
)));
9535 decl
= grokfndecl (ctype
, type
, original_name
,
9536 virtualp
, flags
, quals
,
9538 processing_template_decl
? 0 : friendp
? 2 : 1,
9540 if (decl
== NULL_TREE
)
9543 if (ctype
== NULL_TREE
&& DECL_LANGUAGE (decl
) != lang_c
)
9544 DECL_ASSEMBLER_NAME (decl
) = current_namespace_id (declarator
);
9548 int illegal_static
= 0;
9550 /* Don't allow a static member function in a class, and forbid
9551 declaring main to be static. */
9552 if (TREE_CODE (type
) == METHOD_TYPE
)
9554 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
9557 else if (current_function_decl
)
9559 /* FIXME need arm citation */
9560 error ("cannot declare static function inside another function");
9567 RIDBIT_RESET (RID_STATIC
, specbits
);
9573 /* It's a variable. */
9575 if (decl_context
== CATCHPARM
)
9580 error ("cannot use `::' in parameter declaration");
9583 /* A parameter declared as an array of T is really a pointer to T.
9584 One declared as a function is really a pointer to a function.
9585 One declared as a member is really a pointer to member. */
9587 if (TREE_CODE (type
) == ARRAY_TYPE
)
9589 /* Transfer const-ness of array into that of type pointed to. */
9590 type
= build_pointer_type
9591 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
9592 volatilep
= constp
= 0;
9594 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9595 type
= build_pointer_type (type
);
9596 else if (TREE_CODE (type
) == OFFSET_TYPE
)
9597 type
= build_pointer_type (type
);
9600 /* An uninitialized decl with `extern' is a reference. */
9601 decl
= grokvardecl (type
, declarator
, specbits
, initialized
, constp
);
9602 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
9603 inlinep
, friendp
, raises
!= NULL_TREE
);
9607 DECL_CONTEXT (decl
) = ctype
;
9610 cp_error ("static member `%D' re-declared as static",
9613 RIDBIT_RESET (RID_STATIC
, specbits
);
9615 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
9617 cp_error ("static member `%D' declared `register'", decl
);
9618 RIDBIT_RESET (RID_REGISTER
, specbits
);
9620 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
9622 cp_error ("cannot explicitly declare member `%#D' to have extern linkage",
9624 RIDBIT_RESET (RID_EXTERN
, specbits
);
9629 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9631 error ("`%s' cannot be declared mutable", name
);
9634 /* Record `register' declaration for warnings on &
9635 and in case doing stupid register allocation. */
9637 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
9638 DECL_REGISTER (decl
) = 1;
9640 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
9641 DECL_THIS_EXTERN (decl
) = 1;
9643 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9644 DECL_THIS_STATIC (decl
) = 1;
9646 /* Record constancy and volatility. */
9649 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
9652 TREE_SIDE_EFFECTS (decl
) = 1;
9653 TREE_THIS_VOLATILE (decl
) = 1;
9660 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
9661 An empty exprlist is a parmlist. An exprlist which
9662 contains only identifiers at the global level
9663 is a parmlist. Otherwise, it is an exprlist. */
9665 parmlist_is_exprlist (exprs
)
9668 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
9671 if (toplevel_bindings_p ())
9673 /* At the global level, if these are all identifiers,
9674 then it is a parmlist. */
9677 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
9679 exprs
= TREE_CHAIN (exprs
);
9686 /* Subroutine of `grokparms'. In a fcn definition, arg types must
9689 C++: also subroutine of `start_function'. */
9691 require_complete_types_for_parms (parms
)
9696 tree type
= TREE_TYPE (parms
);
9697 if (TYPE_SIZE (type
) == NULL_TREE
)
9699 if (DECL_NAME (parms
))
9700 error ("parameter `%s' has incomplete type",
9701 IDENTIFIER_POINTER (DECL_NAME (parms
)));
9703 error ("parameter has incomplete type");
9704 TREE_TYPE (parms
) = error_mark_node
;
9707 /* If the arg types are incomplete in a declaration,
9708 they must include undefined tags.
9709 These tags can never be defined in the scope of the declaration,
9710 so the types can never be completed,
9711 and no call can be compiled successfully. */
9712 /* This is not the right behavior for C++, but not having
9713 it is also probably wrong. */
9716 /* Now warn if is a pointer to an incomplete type. */
9717 while (TREE_CODE (type
) == POINTER_TYPE
9718 || TREE_CODE (type
) == REFERENCE_TYPE
)
9719 type
= TREE_TYPE (type
);
9720 type
= TYPE_MAIN_VARIANT (type
);
9721 if (TYPE_SIZE (type
) == NULL_TREE
)
9723 if (DECL_NAME (parm
) != NULL_TREE
)
9724 warning ("parameter `%s' points to incomplete type",
9725 IDENTIFIER_POINTER (DECL_NAME (parm
)));
9727 warning ("parameter points to incomplete type");
9731 parms
= TREE_CHAIN (parms
);
9735 /* Decode the list of parameter types for a function type.
9736 Given the list of things declared inside the parens,
9737 return a list of types.
9739 The list we receive can have three kinds of elements:
9740 an IDENTIFIER_NODE for names given without types,
9741 a TREE_LIST node for arguments given as typespecs or names with typespecs,
9742 or void_type_node, to mark the end of an argument list
9743 when additional arguments are not permitted (... was not used).
9745 FUNCDEF_FLAG is nonzero for a function definition, 0 for
9746 a mere declaration. A nonempty identifier-list gets an error message
9747 when FUNCDEF_FLAG is zero.
9748 If FUNCDEF_FLAG is 1, then parameter types must be complete.
9749 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
9751 If all elements of the input list contain types,
9752 we return a list of the types.
9753 If all elements contain no type (except perhaps a void_type_node
9754 at the end), we return a null list.
9755 If some have types and some do not, it is an error, and we
9758 Also set last_function_parms to either
9759 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
9760 A list of names is converted to a chain of PARM_DECLs
9761 by store_parm_decls so that ultimately it is always a chain of decls.
9763 Note that in C++, parameters can take default values. These default
9764 values are in the TREE_PURPOSE field of the TREE_LIST. It is
9765 an error to specify default values which are followed by parameters
9766 that have no default values, or an ELLIPSES. For simplicities sake,
9767 only parameters which are specified with their types can take on
9771 grokparms (first_parm
, funcdef_flag
)
9775 tree result
= NULL_TREE
;
9776 tree decls
= NULL_TREE
;
9778 if (first_parm
!= NULL_TREE
9779 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
9782 pedwarn ("parameter names (without types) in function declaration");
9783 last_function_parms
= first_parm
;
9786 else if (first_parm
!= NULL_TREE
9787 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
9788 && TREE_VALUE (first_parm
) != void_type_node
)
9789 my_friendly_abort (145);
9792 /* Types were specified. This is a list of declarators
9793 each represented as a TREE_LIST node. */
9794 register tree parm
, chain
;
9795 int any_init
= 0, any_error
= 0, saw_void
= 0;
9797 if (first_parm
!= NULL_TREE
)
9799 tree last_result
= NULL_TREE
;
9800 tree last_decl
= NULL_TREE
;
9802 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
9804 tree type
, list_node
= parm
;
9805 register tree decl
= TREE_VALUE (parm
);
9806 tree init
= TREE_PURPOSE (parm
);
9808 chain
= TREE_CHAIN (parm
);
9809 /* @@ weak defense against parse errors. */
9810 if (decl
!= void_type_node
&& TREE_CODE (decl
) != TREE_LIST
)
9812 /* Give various messages as the need arises. */
9813 if (TREE_CODE (decl
) == STRING_CST
)
9814 error ("invalid string constant `%s'",
9815 TREE_STRING_POINTER (decl
));
9816 else if (TREE_CODE (decl
) == INTEGER_CST
)
9817 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
9821 if (decl
!= void_type_node
)
9823 /* @@ May need to fetch out a `raises' here. */
9824 decl
= grokdeclarator (TREE_VALUE (decl
),
9825 TREE_PURPOSE (decl
),
9826 PARM
, init
!= NULL_TREE
, NULL_TREE
);
9829 type
= TREE_TYPE (decl
);
9830 if (TYPE_MAIN_VARIANT (type
) == void_type_node
)
9831 decl
= void_type_node
;
9832 else if (TREE_CODE (type
) == METHOD_TYPE
)
9834 if (DECL_NAME (decl
))
9835 /* Cannot use `error_with_decl' here because
9836 we don't have DECL_CONTEXT set up yet. */
9837 error ("parameter `%s' invalidly declared method type",
9838 IDENTIFIER_POINTER (DECL_NAME (decl
)));
9840 error ("parameter invalidly declared method type");
9841 type
= build_pointer_type (type
);
9842 TREE_TYPE (decl
) = type
;
9844 else if (TREE_CODE (type
) == OFFSET_TYPE
)
9846 if (DECL_NAME (decl
))
9847 error ("parameter `%s' invalidly declared offset type",
9848 IDENTIFIER_POINTER (DECL_NAME (decl
)));
9850 error ("parameter invalidly declared offset type");
9851 type
= build_pointer_type (type
);
9852 TREE_TYPE (decl
) = type
;
9854 else if (TREE_CODE (type
) == RECORD_TYPE
9855 && TYPE_LANG_SPECIFIC (type
)
9856 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
9858 abstract_virtuals_error (decl
, type
);
9859 any_error
= 1; /* seems like a good idea */
9861 else if (TREE_CODE (type
) == RECORD_TYPE
9862 && TYPE_LANG_SPECIFIC (type
)
9863 && IS_SIGNATURE (type
))
9865 signature_error (decl
, type
);
9866 any_error
= 1; /* seems like a good idea */
9870 if (decl
== void_type_node
)
9872 if (result
== NULL_TREE
)
9874 result
= void_list_node
;
9875 last_result
= result
;
9879 TREE_CHAIN (last_result
) = void_list_node
;
9880 last_result
= void_list_node
;
9884 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
9885 error ("`void' in parameter list must be entire list");
9889 /* Since there is a prototype, args are passed in their own types. */
9890 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
9891 #ifdef PROMOTE_PROTOTYPES
9892 if ((TREE_CODE (type
) == INTEGER_TYPE
9893 || TREE_CODE (type
) == ENUMERAL_TYPE
)
9894 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
9895 DECL_ARG_TYPE (decl
) = integer_type_node
;
9902 if (TREE_CODE (init
) == SAVE_EXPR
)
9903 PARM_DECL_EXPR (init
) = 1;
9904 else if (TREE_CODE (init
) == VAR_DECL
9905 || TREE_CODE (init
) == PARM_DECL
)
9907 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
9909 /* ``Local variables may not be used in default
9910 argument expressions.'' dpANSI C++ 8.2.6 */
9911 /* If extern int i; within a function is not
9912 considered a local variable, then this code is
9914 cp_error ("local variable `%D' may not be used as a default argument", init
);
9917 else if (TREE_READONLY_DECL_P (init
))
9918 init
= decl_constant_value (init
);
9921 init
= require_instantiated_type (type
, init
, integer_zero_node
);
9923 #if 0 /* This is too early to check; trailing parms might be merged in by
9927 error ("all trailing parameters must have default arguments");
9935 if (decls
== NULL_TREE
)
9942 TREE_CHAIN (last_decl
) = decl
;
9945 if (TREE_PERMANENT (list_node
))
9947 TREE_PURPOSE (list_node
) = init
;
9948 TREE_VALUE (list_node
) = type
;
9949 TREE_CHAIN (list_node
) = NULL_TREE
;
9952 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
9953 if (result
== NULL_TREE
)
9956 last_result
= result
;
9960 TREE_CHAIN (last_result
) = list_node
;
9961 last_result
= list_node
;
9965 TREE_CHAIN (last_result
) = NULL_TREE
;
9966 /* If there are no parameters, and the function does not end
9967 with `...', then last_decl will be NULL_TREE. */
9968 if (last_decl
!= NULL_TREE
)
9969 TREE_CHAIN (last_decl
) = NULL_TREE
;
9973 last_function_parms
= decls
;
9975 /* In a fcn definition, arg types must be complete. */
9976 if (funcdef_flag
> 0)
9977 require_complete_types_for_parms (last_function_parms
);
9982 /* These memoizing functions keep track of special properties which
9983 a class may have. `grok_ctor_properties' notices whether a class
9984 has a constructor of the form X(X&), and also complains
9985 if the class has a constructor of the form X(X).
9986 `grok_op_properties' takes notice of the various forms of
9987 operator= which are defined, as well as what sorts of type conversion
9988 may apply. Both functions take a FUNCTION_DECL as an argument. */
9990 grok_ctor_properties (ctype
, decl
)
9993 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
9994 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
9996 /* When a type has virtual baseclasses, a magical first int argument is
9997 added to any ctor so we can tell if the class has been initialized
9998 yet. This could screw things up in this function, so we deliberately
9999 ignore the leading int if we're in that situation. */
10001 && TREE_VALUE (parmtypes
) == integer_type_node
10002 && TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
10004 parmtypes
= TREE_CHAIN (parmtypes
);
10005 parmtype
= TREE_VALUE (parmtypes
);
10008 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
10009 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
)
10011 if (TREE_CHAIN (parmtypes
) == NULL_TREE
10012 || TREE_CHAIN (parmtypes
) == void_list_node
10013 || TREE_PURPOSE (TREE_CHAIN (parmtypes
)))
10015 TYPE_HAS_INIT_REF (ctype
) = 1;
10016 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
10017 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
10020 TYPE_GETS_INIT_AGGR (ctype
) = 1;
10022 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
)
10024 if (TREE_CHAIN (parmtypes
) != NULL_TREE
10025 && TREE_CHAIN (parmtypes
) == void_list_node
)
10027 cp_error ("invalid constructor; you probably meant `%T (%T&)'",
10029 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
10034 TYPE_GETS_INIT_AGGR (ctype
) = 1;
10036 else if (TREE_CODE (parmtype
) == VOID_TYPE
10037 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
10038 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
10043 /* An operator with this name can be either unary or binary. */
10048 return (name
== ansi_opname
[(int) INDIRECT_REF
]
10049 || name
== ansi_opname
[(int) ADDR_EXPR
]
10050 || name
== ansi_opname
[(int) NEGATE_EXPR
]
10051 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
10052 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
10053 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
10056 /* An operator with this name can only be unary. */
10061 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
10062 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
10063 || name
== ansi_opname
[(int) COMPONENT_REF
]
10064 || OPERATOR_TYPENAME_P (name
));
10067 /* Do a little sanity-checking on how they declared their operator. */
10069 grok_op_properties (decl
, virtualp
, friendp
)
10071 int virtualp
, friendp
;
10073 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
10074 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
10075 tree name
= DECL_NAME (decl
);
10077 if (current_class_type
== NULL_TREE
)
10082 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
10083 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
10084 else if (name
== ansi_opname
[(int) CALL_EXPR
])
10085 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
10086 else if (name
== ansi_opname
[(int) ARRAY_REF
])
10087 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
10088 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
10089 || name
== ansi_opname
[(int) MEMBER_REF
])
10090 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
10091 else if (name
== ansi_opname
[(int) NEW_EXPR
])
10092 TYPE_GETS_NEW (current_class_type
) |= 1;
10093 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
10094 TYPE_GETS_DELETE (current_class_type
) |= 1;
10095 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
10096 TYPE_GETS_NEW (current_class_type
) |= 2;
10097 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10098 TYPE_GETS_DELETE (current_class_type
) |= 2;
10101 if (name
== ansi_opname
[(int) NEW_EXPR
]
10102 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
10104 /* When the compiler encounters the definition of A::operator new, it
10105 doesn't look at the class declaration to find out if it's static. */
10107 revert_static_member_fn (&decl
, NULL
, NULL
);
10109 /* Take care of function decl if we had syntax errors. */
10110 if (argtypes
== NULL_TREE
)
10112 build_function_type (ptr_type_node
,
10113 hash_tree_chain (integer_type_node
,
10116 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
10118 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
10119 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10122 revert_static_member_fn (&decl
, NULL
, NULL
);
10124 if (argtypes
== NULL_TREE
)
10126 build_function_type (void_type_node
,
10127 hash_tree_chain (ptr_type_node
,
10131 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
10133 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
10134 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
10135 != void_list_node
))
10136 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
10141 /* An operator function must either be a non-static member function
10142 or have at least one parameter of a class, a reference to a class,
10143 an enumeration, or a reference to an enumeration. 13.4.0.6 */
10144 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
10146 if (OPERATOR_TYPENAME_P (name
)
10147 || name
== ansi_opname
[(int) CALL_EXPR
]
10148 || name
== ansi_opname
[(int) MODIFY_EXPR
]
10149 || name
== ansi_opname
[(int) COMPONENT_REF
]
10150 || name
== ansi_opname
[(int) ARRAY_REF
])
10151 cp_error ("`%D' must be a nonstatic member function", decl
);
10156 if (DECL_STATIC_FUNCTION_P (decl
))
10157 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
10160 for (; TREE_VALUE (p
) != void_type_node
; p
= TREE_CHAIN (p
))
10162 tree arg
= TREE_VALUE (p
);
10163 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
10164 arg
= TREE_TYPE (arg
);
10166 /* This lets bad template code slip through. */
10167 if (IS_AGGR_TYPE (arg
)
10168 || TREE_CODE (arg
) == ENUMERAL_TYPE
10169 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
)
10173 ("`%D' must have an argument of class or enumerated type",
10180 if (name
== ansi_opname
[(int) CALL_EXPR
]
10181 || name
== ansi_opname
[(int) METHOD_CALL_EXPR
])
10182 return; /* no restrictions on args */
10184 if (IDENTIFIER_TYPENAME_P (name
))
10186 tree t
= TREE_TYPE (name
);
10187 if (TREE_CODE (t
) == VOID_TYPE
)
10188 pedwarn ("void is not a valid type conversion operator");
10189 else if (! friendp
)
10191 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
10194 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
10196 if (t
== current_class_type
)
10197 what
= "the same type";
10198 else if (IS_AGGR_TYPE (t
)
10199 && DERIVED_FROM_P (t
, current_class_type
))
10200 what
= "a base class";
10203 warning ("conversion to %s%s will never use a type conversion operator",
10204 ref
? "a reference to " : "", what
);
10208 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
10212 if (list_length (argtypes
) != 3 && methodp
)
10214 cp_error ("`%D' must take exactly one argument", decl
);
10217 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
10219 if (copy_assignment_arg_p (parmtype
, virtualp
)
10222 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
10223 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
10224 || TYPE_READONLY (TREE_TYPE (parmtype
)))
10225 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
10226 #if 0 /* Too soon; done in grok_function_init */
10227 if (DECL_ABSTRACT_VIRTUAL_P (decl
))
10228 TYPE_HAS_ABSTRACT_ASSIGN_REF (current_class_type
) = 1;
10232 else if (name
== ansi_opname
[(int) COND_EXPR
])
10235 pedwarn ("ANSI C++ prohibits overloading operator ?:");
10236 if (list_length (argtypes
) != 4)
10237 cp_error ("`%D' must take exactly three arguments", decl
);
10239 else if (ambi_op_p (name
))
10241 if (list_length (argtypes
) == 2)
10243 else if (list_length (argtypes
) == 3)
10245 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
10246 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
10247 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
10250 cp_error ("postfix `%D' must take `int' as its argument",
10254 ("postfix `%D' must take `int' as its second argument",
10261 cp_error ("`%D' must take either zero or one argument", decl
);
10263 cp_error ("`%D' must take either one or two arguments", decl
);
10266 else if (unary_op_p (name
))
10268 if (list_length (argtypes
) != 2)
10271 cp_error ("`%D' must take `void'", decl
);
10273 cp_error ("`%D' must take exactly one argument", decl
);
10276 else /* if (binary_op_p (name)) */
10278 if (list_length (argtypes
) != 3)
10281 cp_error ("`%D' must take exactly one argument", decl
);
10283 cp_error ("`%D' must take exactly two arguments", decl
);
10289 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
10290 if (TREE_PURPOSE (argtypes
))
10292 TREE_PURPOSE (argtypes
) = NULL_TREE
;
10293 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
10294 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
10297 cp_pedwarn ("`%D' cannot have default arguments", decl
);
10300 cp_error ("`%D' cannot have default arguments", decl
);
10305 /* Get the struct, enum or union (CODE says which) with tag NAME.
10306 Define the tag as a forward-reference if it is not defined.
10308 C++: If a class derivation is given, process it here, and report
10309 an error if multiple derivation declarations are not identical.
10311 If this is a definition, come in through xref_tag and only look in
10312 the current frame for the name (since C++ allows new names in any
10316 xref_tag (code_type_node
, name
, binfo
, globalize
)
10317 tree code_type_node
;
10321 enum tag_types tag_code
;
10322 enum tree_code code
;
10325 register tree ref
, t
;
10326 struct binding_level
*b
= inner_binding_level
;
10328 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
10333 case signature_type
:
10334 code
= RECORD_TYPE
;
10340 code
= ENUMERAL_TYPE
;
10343 my_friendly_abort (18);
10346 /* If a cross reference is requested, look up the type
10347 already defined for this tag and return it. */
10348 t
= IDENTIFIER_TYPE_VALUE (name
);
10349 if (t
&& TREE_CODE (t
) != code
)
10354 /* If we know we are defining this tag, only look it up in this scope
10355 * and don't try to find it as a type. */
10356 if (t
&& TYPE_CONTEXT(t
) && TREE_MANGLED (name
))
10359 ref
= lookup_tag (code
, name
, b
, 1);
10366 ref
= lookup_tag (code
, name
, b
, 0);
10370 /* Try finding it as a type declaration. If that wins, use it. */
10371 ref
= lookup_name (name
, 1);
10372 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
10373 && TREE_CODE (TREE_TYPE (ref
)) == code
)
10374 ref
= TREE_TYPE (ref
);
10380 push_obstacks_nochange ();
10384 /* If no such tag is yet defined, create a forward-reference node
10385 and record it as the "definition".
10386 When a real declaration of this type is found,
10387 the forward-reference will be altered into a real type. */
10389 /* In C++, since these migrate into the global scope, we must
10390 build them on the permanent obstack. */
10392 temp
= allocation_temporary_p ();
10394 end_temporary_allocation ();
10396 if (code
== ENUMERAL_TYPE
)
10398 ref
= make_node (ENUMERAL_TYPE
);
10400 /* Give the type a default layout like unsigned int
10401 to avoid crashing if it does not get defined. */
10402 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
10403 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
10404 TREE_UNSIGNED (ref
) = 1;
10405 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
10406 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
10407 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
10409 /* Enable us to recognize when a type is created in class context.
10410 To do nested classes correctly, this should probably be cleared
10411 out when we leave this classes scope. Currently this in only
10412 done in `start_enum'. */
10414 pushtag (name
, ref
, globalize
);
10416 cadillac_start_enum (ref
);
10420 struct binding_level
*old_b
= class_binding_level
;
10422 ref
= make_lang_type (code
);
10424 if (tag_code
== signature_type
)
10426 SET_SIGNATURE (ref
);
10427 /* Since a signature type will be turned into the type
10428 of signature tables, it's not only an interface. */
10429 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
10430 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
10431 /* A signature doesn't have a vtable. */
10432 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
10435 #ifdef NONNESTED_CLASSES
10436 /* Class types don't nest the way enums do. */
10437 class_binding_level
= (struct binding_level
*)0;
10439 pushtag (name
, ref
, globalize
);
10440 class_binding_level
= old_b
;
10443 cadillac_start_struct (ref
);
10448 /* If it no longer looks like a nested type, make sure it's
10449 in global scope. */
10450 if (b
== global_binding_level
&& !class_binding_level
10451 && IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
)
10452 IDENTIFIER_GLOBAL_VALUE (name
) = TYPE_NAME (ref
);
10458 tree tt2
= TYPE_BINFO_BASETYPES (ref
);
10460 if (TYPE_BINFO_BASETYPES (ref
))
10461 for (i
= 0; tt1
; i
++, tt1
= TREE_CHAIN (tt1
))
10462 if (TREE_VALUE (tt1
) != TYPE_IDENTIFIER (BINFO_TYPE (TREE_VEC_ELT (tt2
, i
))))
10464 cp_error ("redeclaration of derivation chain of type `%#T'",
10469 if (tt1
== NULL_TREE
)
10470 /* The user told us something we already knew. */
10473 /* In C++, since these migrate into the global scope, we must
10474 build them on the permanent obstack. */
10475 end_temporary_allocation ();
10481 xref_basetypes (code_type_node
, name
, ref
, binfo
);
10485 /* Until the type is defined, tentatively accept whatever
10486 structure tag the user hands us. */
10487 if (TYPE_SIZE (ref
) == NULL_TREE
10488 && ref
!= current_class_type
10489 /* Have to check this, in case we have contradictory tag info. */
10490 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
10492 if (tag_code
== class_type
)
10493 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
10494 else if (tag_code
== record_type
|| tag_code
== signature_type
)
10495 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
10504 xref_basetypes (code_type_node
, name
, ref
, binfo
)
10505 tree code_type_node
;
10509 /* In the declaration `A : X, Y, ... Z' we mark all the types
10510 (A, X, Y, ..., Z) so we can check for duplicates. */
10513 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
10515 if (tag_code
== union_type
)
10517 cp_error ("derived union `%T' invalid", ref
);
10521 len
= list_length (binfo
);
10522 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
10524 SET_CLASSTYPE_MARKED (ref
);
10525 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
10527 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
10529 /* The base of a derived struct is public by default. */
10531 = (TREE_PURPOSE (binfo
) == (tree
)access_public
10532 || TREE_PURPOSE (binfo
) == (tree
)access_public_virtual
10533 || (tag_code
!= class_type
10534 && (TREE_PURPOSE (binfo
) == (tree
)access_default
10535 || TREE_PURPOSE (binfo
) == (tree
)access_default_virtual
)));
10536 int via_protected
= TREE_PURPOSE (binfo
) == (tree
)access_protected
;
10538 = (TREE_PURPOSE (binfo
) == (tree
)access_private_virtual
10539 || TREE_PURPOSE (binfo
) == (tree
)access_public_virtual
10540 || TREE_PURPOSE (binfo
) == (tree
)access_default_virtual
);
10541 tree basetype
= TREE_TYPE (TREE_VALUE (binfo
));
10544 GNU_xref_hier (IDENTIFIER_POINTER (name
),
10545 IDENTIFIER_POINTER (TREE_VALUE (binfo
)),
10546 via_public
, via_virtual
, 0);
10548 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
10549 basetype
= TREE_TYPE (basetype
);
10550 if (!basetype
|| TREE_CODE (basetype
) != RECORD_TYPE
)
10552 cp_error ("base type `%T' fails to be a struct or class type",
10553 TREE_VALUE (binfo
));
10557 /* This code replaces similar code in layout_basetypes. */
10558 else if (TYPE_INCOMPLETE (basetype
))
10560 cp_error ("base class `%T' has incomplete type", basetype
);
10566 if (CLASSTYPE_MARKED (basetype
))
10568 if (basetype
== ref
)
10569 cp_error ("recursive type `%T' undefined", basetype
);
10571 cp_error ("duplicate base type `%T' invalid", basetype
);
10575 /* Note that the BINFO records which describe individual
10576 inheritances are *not* shared in the lattice! They
10577 cannot be shared because a given baseclass may be
10578 inherited with different `accessibility' by different
10579 derived classes. (Each BINFO record describing an
10580 individual inheritance contains flags which say what
10581 the `accessibility' of that particular inheritance is.) */
10583 base_binfo
= make_binfo (integer_zero_node
, basetype
,
10584 TYPE_BINFO_VTABLE (basetype
),
10585 TYPE_BINFO_VIRTUALS (basetype
), NULL_TREE
);
10587 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
10588 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
10589 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
10590 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
10591 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
10593 SET_CLASSTYPE_MARKED (basetype
);
10595 /* XYZZY TEST VIRTUAL BASECLASSES */
10596 if (CLASSTYPE_N_BASECLASSES (basetype
) == NULL_TREE
10597 && TYPE_HAS_DEFAULT_CONSTRUCTOR (basetype
)
10598 && via_virtual
== 0)
10600 warning ("making type `%s' a virtual baseclass",
10601 TYPE_NAME_STRING (basetype
));
10605 /* We are free to modify these bits because they are meaningless
10606 at top level, and BASETYPE is a top-level type. */
10607 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
10609 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
10610 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
10613 TYPE_OVERLOADS_METHOD_CALL_EXPR (ref
) |= TYPE_OVERLOADS_METHOD_CALL_EXPR (basetype
);
10614 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
10615 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
10616 CLASSTYPE_LOCAL_TYPEDECLS (ref
) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype
);
10621 TREE_VEC_LENGTH (binfos
) = i
;
10623 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
10626 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
10628 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
10629 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
10630 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
10631 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
10633 /* Unmark all the types. */
10635 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
10636 CLEAR_CLASSTYPE_MARKED (ref
);
10642 static tree current_local_enum
= NULL_TREE
;
10644 /* Begin compiling the definition of an enumeration type.
10645 NAME is its name (or null if anonymous).
10646 Returns the type object, as yet incomplete.
10647 Also records info about it so that build_enumerator
10648 may be used to declare the individual values as they are read. */
10654 register tree enumtype
= NULL_TREE
;
10655 struct binding_level
*b
= inner_binding_level
;
10657 /* If this is the real definition for a previous forward reference,
10658 fill in the contents in the same object that used to be the
10659 forward reference. */
10661 if (name
!= NULL_TREE
)
10662 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
10664 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
10665 cp_error ("multiple definition of enum `%T'", enumtype
);
10668 enumtype
= make_node (ENUMERAL_TYPE
);
10669 pushtag (name
, enumtype
, 0);
10672 if (current_class_type
)
10673 TREE_ADDRESSABLE (b
->tags
) = 1;
10674 current_local_enum
= NULL_TREE
;
10676 #if 0 /* This stuff gets cleared in finish_enum anyway. */
10677 if (TYPE_VALUES (enumtype
) != NULL_TREE
)
10678 /* Completely replace its old definition.
10679 The old enumerators remain defined, however. */
10680 TYPE_VALUES (enumtype
) = NULL_TREE
;
10682 /* Initially, set up this enum as like `int'
10683 so that we can create the enumerators' declarations and values.
10684 Later on, the precision of the type may be changed and
10685 it may be laid out again. */
10687 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
10688 TYPE_SIZE (enumtype
) = NULL_TREE
;
10689 fixup_signed_type (enumtype
);
10692 /* We copy this value because enumerated type constants
10693 are really of the type of the enumerator, not integer_type_node. */
10694 enum_next_value
= copy_node (integer_zero_node
);
10697 GNU_xref_decl (current_function_decl
, enumtype
);
10701 /* After processing and defining all the values of an enumeration type,
10702 install their decls in the enumeration type and finish it off.
10703 ENUMTYPE is the type object and VALUES a list of name-value pairs.
10704 Returns ENUMTYPE. */
10707 finish_enum (enumtype
, values
)
10708 register tree enumtype
, values
;
10710 register tree minnode
, maxnode
;
10711 /* Calculate the maximum value of any enumerator in this type. */
10715 register tree pair
;
10716 register tree value
= DECL_INITIAL (TREE_VALUE (values
));
10718 /* Speed up the main loop by performing some precalculations */
10719 TREE_TYPE (TREE_VALUE (values
)) = enumtype
;
10720 TREE_TYPE (value
) = enumtype
;
10721 TREE_VALUE (values
) = value
;
10722 minnode
= maxnode
= value
;
10724 for (pair
= TREE_CHAIN (values
); pair
; pair
= TREE_CHAIN (pair
))
10726 value
= DECL_INITIAL (TREE_VALUE (pair
));
10727 TREE_TYPE (TREE_VALUE (pair
)) = enumtype
;
10728 TREE_TYPE (value
) = enumtype
;
10729 TREE_VALUE (pair
) = value
;
10730 if (tree_int_cst_lt (maxnode
, value
))
10732 else if (tree_int_cst_lt (value
, minnode
))
10737 maxnode
= minnode
= integer_zero_node
;
10739 TYPE_VALUES (enumtype
) = values
;
10742 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
10743 int lowprec
= min_precision (minnode
, unsignedp
);
10744 int highprec
= min_precision (maxnode
, unsignedp
);
10745 int precision
= MAX (lowprec
, highprec
);
10747 TYPE_SIZE (enumtype
) = NULL_TREE
;
10749 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
10751 TYPE_PRECISION (enumtype
) = precision
;
10753 fixup_unsigned_type (enumtype
);
10755 fixup_signed_type (enumtype
);
10757 if (flag_short_enums
|| precision
> TYPE_PRECISION (integer_type_node
))
10758 /* Use the width of the narrowest normal C type which is wide enough. */
10759 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
10762 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
10764 TYPE_SIZE (enumtype
) = 0;
10765 layout_type (enumtype
);
10769 cadillac_finish_enum (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. */
10791 /* @@ Do we ever generate generate ENUMERAL_TYPE nodes for which debugging
10792 information should *not* be generated? I think not. */
10793 if (! DECL_IGNORED_P (TYPE_NAME (enumtype
)))
10795 rest_of_type_compilation (enumtype
, global_bindings_p ());
10800 /* Build and install a CONST_DECL for one value of the
10801 current enumeration type (one that was begun with start_enum).
10802 Return a tree-list containing the name and its value.
10803 Assignment of sequential values by default is handled here. */
10806 build_enumerator (name
, value
)
10810 /* Change this to zero if we find VALUE is not shareable. */
10813 /* Remove no-op casts from the value. */
10815 STRIP_TYPE_NOPS (value
);
10817 /* Validate and default VALUE. */
10818 if (value
!= NULL_TREE
)
10820 if (TREE_READONLY_DECL_P (value
))
10822 value
= decl_constant_value (value
);
10826 if (TREE_CODE (value
) == INTEGER_CST
)
10828 value
= default_conversion (value
);
10829 constant_expression_warning (value
);
10833 cp_error ("enumerator value for `%D' not integer constant", name
);
10838 /* The order of things is reversed here so that we
10839 can check for possible sharing of enum values,
10840 to keep that from happening. */
10841 /* Default based on previous value. */
10842 if (value
== NULL_TREE
)
10844 value
= enum_next_value
;
10846 cp_error ("overflow in enumeration values at `%D'", name
);
10849 /* Remove no-op casts from the value. */
10851 STRIP_TYPE_NOPS (value
);
10853 /* Make up for hacks in lex.c. */
10854 if (value
== integer_zero_node
)
10855 value
= build_int_2 (0, 0);
10856 else if (value
== integer_one_node
)
10857 value
= build_int_2 (1, 0);
10858 else if (TREE_CODE (value
) == INTEGER_CST
10860 || TREE_CODE (TREE_TYPE (value
)) == ENUMERAL_TYPE
))
10862 value
= copy_node (value
);
10863 TREE_TYPE (value
) = integer_type_node
;
10866 /* C++ associates enums with global, function, or class declarations. */
10868 decl
= current_scope ();
10869 if (decl
&& decl
== current_class_type
)
10871 /* This enum declaration is local to the class, so we must put
10872 it in that class's list of decls. */
10873 decl
= build_lang_field_decl (CONST_DECL
, name
, integer_type_node
);
10874 DECL_INITIAL (decl
) = value
;
10875 TREE_READONLY (decl
) = 1;
10876 pushdecl_class_level (decl
);
10877 TREE_CHAIN (decl
) = current_local_enum
;
10878 current_local_enum
= decl
;
10882 /* It's a global enum, or it's local to a function. (Note local to
10883 a function could mean local to a class method. */
10884 decl
= build_decl (CONST_DECL
, name
, integer_type_node
);
10885 DECL_INITIAL (decl
) = value
;
10888 GNU_xref_decl (current_function_decl
, decl
);
10891 /* Set basis for default for next value. */
10892 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
10893 integer_one_node
, PLUS_EXPR
);
10894 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
10896 if (enum_next_value
== integer_one_node
)
10897 enum_next_value
= copy_node (enum_next_value
);
10899 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
10904 grok_enum_decls (type
, decl
)
10907 tree d
= current_local_enum
;
10909 if (d
== NULL_TREE
)
10914 TREE_TYPE (d
) = type
;
10915 if (TREE_CHAIN (d
) == NULL_TREE
)
10917 TREE_CHAIN (d
) = decl
;
10920 d
= TREE_CHAIN (d
);
10923 decl
= current_local_enum
;
10924 current_local_enum
= NULL_TREE
;
10929 /* Create the FUNCTION_DECL for a function definition.
10930 DECLSPECS and DECLARATOR are the parts of the declaration;
10931 they describe the function's name and the type it returns,
10932 but twisted together in a fashion that parallels the syntax of C.
10934 This function creates a binding context for the function body
10935 as well as setting up the FUNCTION_DECL in current_function_decl.
10937 Returns 1 on success. If the DECLARATOR is not suitable for a function
10938 (it defines a datum instead), we return 0, which tells
10939 yyparse to report a parse error.
10941 For C++, we must first check whether that datum makes any sense.
10942 For example, "class A local_a(1,2);" means that variable local_a
10943 is an aggregate of type A, which should have a constructor
10944 applied to it with the argument list [1, 2].
10946 @@ There is currently no way to retrieve the storage
10947 @@ allocated to FUNCTION (or all of its parms) if we return
10948 @@ something we had previously. */
10951 start_function (declspecs
, declarator
, raises
, pre_parsed_p
)
10952 tree declarator
, declspecs
, raises
;
10955 tree decl1
, olddecl
;
10956 tree ctype
= NULL_TREE
;
10959 extern int have_extern_spec
;
10960 extern int used_extern_spec
;
10961 int doing_friend
= 0;
10963 /* Sanity check. */
10964 my_friendly_assert (TREE_VALUE (void_list_node
) == void_type_node
, 160);
10965 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
10967 /* Assume, until we see it does. */
10968 current_function_returns_value
= 0;
10969 current_function_returns_null
= 0;
10970 warn_about_return_type
= 0;
10972 shadowed_labels
= 0;
10973 current_function_assigns_this
= 0;
10974 current_function_just_assigned_this
= 0;
10975 current_function_parms_stored
= 0;
10976 original_result_rtx
= NULL_RTX
;
10977 current_function_obstack_index
= 0;
10978 current_function_obstack_usage
= 0;
10979 base_init_expr
= NULL_TREE
;
10980 protect_list
= NULL_TREE
;
10981 current_base_init_list
= NULL_TREE
;
10982 current_member_init_list
= NULL_TREE
;
10984 clear_temp_name ();
10986 /* This should only be done once on the top most decl. */
10987 if (have_extern_spec
&& !used_extern_spec
)
10989 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
10990 used_extern_spec
= 1;
10995 decl1
= declarator
;
10997 if (! DECL_ARGUMENTS (decl1
)
10998 && !DECL_STATIC_FUNCTION_P (decl1
)
10999 && DECL_CONTEXT (decl1
)
11000 && DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl1
)))
11001 && IDENTIFIER_TEMPLATE (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl1
)))))
11003 cp_error ("redeclaration of `%#D'", decl1
);
11004 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
11005 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
11006 else if (IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1
)))
11007 cp_error_at ("previous declaration here", IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1
)));
11010 last_function_parms
= DECL_ARGUMENTS (decl1
);
11011 last_function_parm_tags
= NULL_TREE
;
11012 fntype
= TREE_TYPE (decl1
);
11013 if (TREE_CODE (fntype
) == METHOD_TYPE
)
11014 ctype
= TYPE_METHOD_BASETYPE (fntype
);
11016 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
11017 class is in the (lexical) scope of the class in which it is
11019 if (!ctype
&& DECL_FRIEND_P (decl1
))
11021 ctype
= DECL_CLASS_CONTEXT (decl1
);
11023 /* CTYPE could be null here if we're dealing with a template;
11024 for example, `inline friend float foo()' inside a template
11025 will have no CTYPE set. */
11026 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
11032 raises
= TYPE_RAISES_EXCEPTIONS (fntype
);
11034 /* In a fcn definition, arg types must be complete. */
11035 require_complete_types_for_parms (last_function_parms
);
11039 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, raises
);
11040 /* If the declarator is not suitable for a function definition,
11041 cause a syntax error. */
11042 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
11044 fntype
= TREE_TYPE (decl1
);
11046 restype
= TREE_TYPE (fntype
);
11047 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
11048 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
11050 cp_error ("semicolon missing after declaration of `%#T'", restype
);
11051 shadow_tag (build_tree_list (NULL_TREE
, restype
));
11052 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
11053 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
11054 fntype
= build_function_type (integer_type_node
,
11055 TYPE_ARG_TYPES (fntype
));
11057 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
11059 TYPE_ARG_TYPES (fntype
));
11060 TREE_TYPE (decl1
) = fntype
;
11063 if (TREE_CODE (fntype
) == METHOD_TYPE
)
11064 ctype
= TYPE_METHOD_BASETYPE (fntype
);
11065 else if (IDENTIFIER_LENGTH (DECL_NAME (decl1
)) == 4
11066 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (decl1
)), "main")
11067 && DECL_CONTEXT (decl1
) == NULL_TREE
)
11069 /* If this doesn't return integer_type, complain. */
11070 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
11072 if (pedantic
|| warn_return_type
)
11073 pedwarn ("return type for `main' changed to integer type");
11074 TREE_TYPE (decl1
) = fntype
= default_function_type
;
11076 warn_about_return_type
= 0;
11080 /* Warn if function was previously implicitly declared
11081 (but not if we warned then). */
11082 if (! warn_implicit
11083 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
11084 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
11086 current_function_decl
= decl1
;
11089 cadillac_start_function (decl1
);
11091 announce_function (decl1
);
11093 if (TYPE_SIZE (TREE_TYPE (fntype
)) == NULL_TREE
)
11095 if (IS_AGGR_TYPE (TREE_TYPE (fntype
)))
11096 error_with_aggr_type (TREE_TYPE (fntype
),
11097 "return-type `%s' is an incomplete type");
11099 error ("return-type is an incomplete type");
11101 /* Make it return void instead, but don't change the
11102 type of the DECL_RESULT, in case we have a named return value. */
11105 = build_cplus_method_type (build_type_variant (ctype
,
11106 TREE_READONLY (decl1
),
11107 TREE_SIDE_EFFECTS (decl1
)),
11109 FUNCTION_ARG_CHAIN (decl1
));
11112 = build_function_type (void_type_node
,
11113 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
11114 DECL_RESULT (decl1
) = build_decl (RESULT_DECL
, 0, TREE_TYPE (fntype
));
11117 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
11118 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
11119 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
11121 if (warn_about_return_type
)
11122 warning ("return-type defaults to `int'");
11124 /* Make the init_value nonzero so pushdecl knows this is not tentative.
11125 error_mark_node is replaced below (in poplevel) with the BLOCK. */
11126 DECL_INITIAL (decl1
) = error_mark_node
;
11128 /* Didn't get anything from C. */
11129 olddecl
= NULL_TREE
;
11131 /* This function exists in static storage.
11132 (This does not mean `static' in the C sense!) */
11133 TREE_STATIC (decl1
) = 1;
11135 /* Record the decl so that the function name is defined.
11136 If we already have a decl for this name, and it is a FUNCTION_DECL,
11137 use the old decl. */
11139 if (pre_parsed_p
== 0)
11141 current_function_decl
= decl1
= pushdecl (decl1
);
11142 DECL_MAIN_VARIANT (decl1
) = decl1
;
11143 fntype
= TREE_TYPE (decl1
);
11146 current_function_decl
= decl1
;
11148 if (DECL_INTERFACE_KNOWN (decl1
))
11150 if (DECL_NOT_REALLY_EXTERN (decl1
))
11151 DECL_EXTERNAL (decl1
) = 0;
11153 /* If this function belongs to an interface, it is public.
11154 If it belongs to someone else's interface, it is also external.
11155 It doesn't matter whether it's inline or not. */
11156 else if (interface_unknown
== 0)
11158 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
11159 DECL_EXTERNAL (decl1
)
11161 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
11163 DECL_EXTERNAL (decl1
) = 0;
11164 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
11165 DECL_INTERFACE_KNOWN (decl1
) = 1;
11169 /* This is a definition, not a reference.
11170 So clear DECL_EXTERNAL. */
11171 DECL_EXTERNAL (decl1
) = 0;
11173 if (DECL_THIS_INLINE (decl1
) && ! DECL_INTERFACE_KNOWN (decl1
))
11174 DECL_DEFER_OUTPUT (decl1
) = 1;
11177 DECL_INTERFACE_KNOWN (decl1
) = 1;
11178 if (DECL_C_STATIC (decl1
))
11179 TREE_PUBLIC (decl1
) = 0;
11183 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
11185 if (TREE_CODE (fntype
) == METHOD_TYPE
)
11186 TREE_TYPE (decl1
) = fntype
11187 = build_function_type (TREE_TYPE (fntype
),
11188 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
11189 last_function_parms
= TREE_CHAIN (last_function_parms
);
11190 DECL_ARGUMENTS (decl1
) = last_function_parms
;
11193 restype
= TREE_TYPE (fntype
);
11197 push_nested_class (ctype
, 1);
11199 /* If we're compiling a friend function, neither of the variables
11200 current_class_decl nor current_class_type will have values. */
11201 if (! doing_friend
)
11203 /* We know that this was set up by `grokclassfn'.
11204 We do not wait until `store_parm_decls', since evil
11205 parse errors may never get us to that point. Here
11206 we keep the consistency between `current_class_type'
11207 and `current_class_decl'. */
11208 tree t
= last_function_parms
;
11209 int i
= suspend_momentary ();
11211 my_friendly_assert (t
!= NULL_TREE
11212 && TREE_CODE (t
) == PARM_DECL
, 162);
11214 /* Fool build_indirect_ref. */
11215 current_class_decl
= NULL_TREE
;
11216 C_C_D
= build_indirect_ref (t
, NULL_PTR
);
11217 current_class_decl
= t
;
11218 resume_momentary (i
);
11223 if (DECL_STATIC_FUNCTION_P (decl1
))
11224 push_nested_class (DECL_CONTEXT (decl1
), 2);
11226 push_memoized_context (0, 1);
11227 current_class_decl
= C_C_D
= NULL_TREE
;
11231 current_binding_level
->parm_flag
= 1;
11233 /* Save the parm names or decls from this function's declarator
11234 where store_parm_decls will find them. */
11235 current_function_parms
= last_function_parms
;
11236 current_function_parm_tags
= last_function_parm_tags
;
11238 GNU_xref_function (decl1
, current_function_parms
);
11240 make_function_rtl (decl1
);
11242 /* Allocate further tree nodes temporarily during compilation
11243 of this function only. Tiemann moved up here from bottom of fn. */
11244 temporary_allocation ();
11246 /* Promote the value to int before returning it. */
11247 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
11249 /* It retains unsignedness if traditional or if it isn't
11250 really getting wider. */
11251 if (TREE_UNSIGNED (restype
)
11252 && (flag_traditional
11253 || TYPE_PRECISION (restype
)
11254 == TYPE_PRECISION (integer_type_node
)))
11255 restype
= unsigned_type_node
;
11257 restype
= integer_type_node
;
11259 if (DECL_RESULT (decl1
) == NULL_TREE
)
11260 DECL_RESULT (decl1
) = build_decl (RESULT_DECL
, 0, restype
);
11262 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
)))
11264 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
11265 ctor_label
= NULL_TREE
;
11269 dtor_label
= NULL_TREE
;
11270 if (DECL_CONSTRUCTOR_P (decl1
))
11271 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
11274 /* If this fcn was already referenced via a block-scope `extern' decl
11275 (or an implicit decl), propagate certain information about the usage. */
11276 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
11277 TREE_ADDRESSABLE (decl1
) = 1;
11282 /* Store the parameter declarations into the current function declaration.
11283 This is called after parsing the parameter declarations, before
11284 digesting the body of the function.
11286 Also install to binding contour return value identifier, if any. */
11289 store_parm_decls ()
11291 register tree fndecl
= current_function_decl
;
11292 register tree parm
;
11293 int parms_have_cleanups
= 0;
11295 /* This is either a chain of PARM_DECLs (when a prototype is used). */
11296 tree specparms
= current_function_parms
;
11298 /* This is a list of types declared among parms in a prototype. */
11299 tree parmtags
= current_function_parm_tags
;
11301 /* This is a chain of any other decls that came in among the parm
11302 declarations. If a parm is declared with enum {foo, bar} x;
11303 then CONST_DECLs for foo and bar are put here. */
11304 tree nonparms
= NULL_TREE
;
11306 if (toplevel_bindings_p ())
11307 fatal ("parse errors have confused me too much");
11309 /* Initialize RTL machinery. */
11310 init_function_start (fndecl
, input_filename
, lineno
);
11312 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
11313 declare_function_name ();
11315 /* Create a binding level for the parms. */
11316 expand_start_bindings (0);
11318 if (specparms
!= NULL_TREE
)
11320 /* This case is when the function was defined with an ANSI prototype.
11321 The parms already have decls, so we need not do anything here
11322 except record them as in effect
11323 and complain if any redundant old-style parm decls were written. */
11325 register tree next
;
11327 /* Must clear this because it might contain TYPE_DECLs declared
11329 storedecls (NULL_TREE
);
11330 for (parm
= nreverse (specparms
); parm
; parm
= next
)
11332 next
= TREE_CHAIN (parm
);
11333 if (TREE_CODE (parm
) == PARM_DECL
)
11335 tree cleanup
= maybe_build_cleanup (parm
);
11336 if (DECL_NAME (parm
) == NULL_TREE
)
11339 cp_error_at ("parameter name omitted", parm
);
11341 /* for C++, this is not an error. */
11345 else if (TYPE_MAIN_VARIANT (TREE_TYPE (parm
)) == void_type_node
)
11346 cp_error ("parameter `%D' declared void", parm
);
11349 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
11350 A parameter is assumed not to have any side effects.
11351 If this should change for any reason, then this
11352 will have to wrap the bashed reference type in a save_expr.
11354 Also, if the parameter type is declared to be an X
11355 and there is an X(X&) constructor, we cannot lay it
11356 into the stack (any more), so we make this parameter
11357 look like it is really of reference type. Functions
11358 which pass parameters to this function will know to
11359 create a temporary in their frame, and pass a reference
11362 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
11363 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
11364 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
11370 expand_decl (parm
);
11371 if (! expand_decl_cleanup (parm
, cleanup
))
11372 cp_error ("parser lost in parsing declaration of `%D'",
11374 parms_have_cleanups
= 1;
11379 /* If we find an enum constant or a type tag,
11380 put it aside for the moment. */
11381 TREE_CHAIN (parm
) = NULL_TREE
;
11382 nonparms
= chainon (nonparms
, parm
);
11386 /* Get the decls in their original chain order
11387 and record in the function. This is all and only the
11388 PARM_DECLs that were pushed into scope by the loop above. */
11389 DECL_ARGUMENTS (fndecl
) = getdecls ();
11391 storetags (chainon (parmtags
, gettags ()));
11394 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
11396 /* Now store the final chain of decls for the arguments
11397 as the decl-chain of the current lexical scope.
11398 Put the enumerators in as well, at the front so that
11399 DECL_ARGUMENTS is not modified. */
11401 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
11403 /* Initialize the RTL code for the function. */
11404 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
11405 expand_function_start (fndecl
, parms_have_cleanups
);
11407 /* Create a binding contour which can be used to catch
11408 cleanup-generated temporaries. Also, if the return value needs or
11409 has initialization, deal with that now. */
11410 if (parms_have_cleanups
)
11413 expand_start_bindings (0);
11416 current_function_parms_stored
= 1;
11420 maybe_gc_cleanup
= build_tree_list (NULL_TREE
, error_mark_node
);
11421 if (! expand_decl_cleanup (NULL_TREE
, maybe_gc_cleanup
))
11422 cp_error ("parser lost in parsing declaration of `%D'", fndecl
);
11425 /* If this function is `main', emit a call to `__main'
11426 to run global initializers, etc. */
11427 if (DECL_NAME (fndecl
)
11428 && IDENTIFIER_LENGTH (DECL_NAME (fndecl
)) == 4
11429 && strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl
)), "main") == 0
11430 && DECL_CONTEXT (fndecl
) == NULL_TREE
)
11432 expand_main_function ();
11435 expand_expr (build_function_call (lookup_name (get_identifier ("__gc_main"), 0), NULL_TREE
),
11438 /* done at a different time */
11440 output_builtin_tdesc_entries ();
11445 /* Bind a name and initialization to the return value of
11446 the current function. */
11448 store_return_init (return_id
, init
)
11449 tree return_id
, init
;
11451 tree decl
= DECL_RESULT (current_function_decl
);
11454 /* Give this error as many times as there are occurrences,
11455 so that users can use Emacs compilation buffers to find
11456 and fix all such places. */
11457 pedwarn ("ANSI C++ does not permit named return values");
11459 if (return_id
!= NULL_TREE
)
11461 if (DECL_NAME (decl
) == NULL_TREE
)
11463 DECL_NAME (decl
) = return_id
;
11464 DECL_ASSEMBLER_NAME (decl
) = return_id
;
11467 error ("return identifier `%s' already in place",
11468 IDENTIFIER_POINTER (DECL_NAME (decl
)));
11471 /* Can't let this happen for constructors. */
11472 if (DECL_CONSTRUCTOR_P (current_function_decl
))
11474 error ("can't redefine default return value for constructors");
11478 /* If we have a named return value, put that in our scope as well. */
11479 if (DECL_NAME (decl
) != NULL_TREE
)
11481 /* If this named return value comes in a register,
11482 put it in a pseudo-register. */
11483 if (DECL_REGISTER (decl
))
11485 original_result_rtx
= DECL_RTL (decl
);
11486 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
11489 /* Let `cp_finish_decl' know that this initializer is ok. */
11490 DECL_INITIAL (decl
) = init
;
11492 cp_finish_decl (decl
, init
, NULL_TREE
, 0, LOOKUP_ONLYCONVERTING
);
11497 /* Finish up a function declaration and compile that function
11498 all the way to assembler language output. The free the storage
11499 for the function definition.
11501 This is called after parsing the body of the function definition.
11502 LINENO is the current line number.
11504 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
11505 (and expand_end_bindings) must be made to take care of the binding
11506 contour for the base initializers. This is only relevant for
11510 finish_function (lineno
, call_poplevel
, nested
)
11515 register tree fndecl
= current_function_decl
;
11516 tree fntype
, ctype
= NULL_TREE
;
11517 rtx head
, last_parm_insn
, mark
;
11518 /* Label to use if this function is supposed to return a value. */
11519 tree no_return_label
= NULL_TREE
;
11520 tree decls
= NULL_TREE
;
11522 /* When we get some parse errors, we can end up without a
11523 current_function_decl, so cope. */
11524 if (fndecl
== NULL_TREE
)
11527 fntype
= TREE_TYPE (fndecl
);
11529 /* TREE_READONLY (fndecl) = 1;
11530 This caused &foo to be of type ptr-to-const-function
11531 which then got a warning when stored in a ptr-to-function variable. */
11533 /* This happens on strange parse errors. */
11534 if (! current_function_parms_stored
)
11537 store_parm_decls ();
11540 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
11542 tree ttype
= target_type (fntype
);
11545 if (IS_AGGR_TYPE (ttype
))
11546 /* Let debugger know it should output info for this type. */
11547 note_debug_info_needed (ttype
);
11549 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
11551 ttype
= target_type (TREE_TYPE (parmdecl
));
11552 if (IS_AGGR_TYPE (ttype
))
11553 /* Let debugger know it should output info for this type. */
11554 note_debug_info_needed (ttype
);
11558 /* Clean house because we will need to reorder insns here. */
11559 do_pending_stack_adjust ();
11563 tree binfo
= TYPE_BINFO (current_class_type
);
11564 tree cond
= integer_one_node
;
11565 tree exprstmt
, vfields
;
11566 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
11568 int ok_to_optimize_dtor
= 0;
11570 if (current_function_assigns_this
)
11571 cond
= build (NE_EXPR
, boolean_type_node
,
11572 current_class_decl
, integer_zero_node
);
11575 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
11577 /* If this destructor is empty, then we don't need to check
11578 whether `this' is NULL in some cases. */
11579 mark
= get_last_insn ();
11580 last_parm_insn
= get_first_nonparm_insn ();
11582 if ((flag_this_is_variable
& 1) == 0)
11583 ok_to_optimize_dtor
= 1;
11584 else if (mark
== last_parm_insn
)
11585 ok_to_optimize_dtor
11586 = (n_baseclasses
== 0
11587 || (n_baseclasses
== 1
11588 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
11591 /* These initializations might go inline. Protect
11592 the binding level of the parms. */
11594 expand_start_bindings (0);
11596 if (current_function_assigns_this
)
11598 current_function_assigns_this
= 0;
11599 current_function_just_assigned_this
= 0;
11602 /* Generate the code to call destructor on base class.
11603 If this destructor belongs to a class with virtual
11604 functions, then set the virtual function table
11605 pointer to represent the type of our base class. */
11607 /* This side-effect makes call to `build_delete' generate the
11608 code we have to have at the end of this destructor. */
11609 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
11611 /* These are two cases where we cannot delegate deletion. */
11612 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
11613 || TYPE_GETS_REG_DELETE (current_class_type
))
11614 exprstmt
= build_delete (current_class_type
, C_C_D
, integer_zero_node
,
11615 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
, 0);
11617 exprstmt
= build_delete (current_class_type
, C_C_D
, in_charge_node
,
11618 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
, 0);
11620 /* If we did not assign to this, then `this' is non-zero at
11621 the end of a destructor. As a special optimization, don't
11622 emit test if this is an empty destructor. If it does nothing,
11623 it does nothing. If it calls a base destructor, the base
11624 destructor will perform the test. */
11626 if (exprstmt
!= error_mark_node
11627 && (TREE_CODE (exprstmt
) != NOP_EXPR
11628 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
11629 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
11631 expand_label (dtor_label
);
11632 if (cond
!= integer_one_node
)
11633 expand_start_cond (cond
, 0);
11634 if (exprstmt
!= void_zero_node
)
11635 /* Don't call `expand_expr_stmt' if we're not going to do
11636 anything, since -Wall will give a diagnostic. */
11637 expand_expr_stmt (exprstmt
);
11639 /* Run destructor on all virtual baseclasses. */
11640 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
11642 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
11643 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
11644 in_charge_node
, integer_two_node
), 0);
11647 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
11649 tree ptr
= convert_pointer_to_vbase (vbases
, current_class_decl
);
11650 expand_expr_stmt (build_delete (TYPE_POINTER_TO (BINFO_TYPE (vbases
)),
11651 ptr
, integer_zero_node
,
11652 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_HAS_IN_CHARGE
, 0));
11654 vbases
= TREE_CHAIN (vbases
);
11656 expand_end_cond ();
11659 do_pending_stack_adjust ();
11660 if (cond
!= integer_one_node
)
11661 expand_end_cond ();
11664 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
11666 virtual_size
= c_sizeof (current_class_type
);
11668 /* At the end, call delete if that's what's requested. */
11669 if (TYPE_GETS_REG_DELETE (current_class_type
))
11670 /* This NOP_EXPR means we are in a static call context. */
11673 (build_indirect_ref
11674 (build1 (NOP_EXPR
, TYPE_POINTER_TO (current_class_type
),
11677 ansi_opname
[(int) DELETE_EXPR
],
11678 tree_cons (NULL_TREE
, current_class_decl
,
11679 build_tree_list (NULL_TREE
, virtual_size
)),
11680 NULL_TREE
, LOOKUP_NORMAL
);
11681 else if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
11682 exprstmt
= build_x_delete (ptr_type_node
, current_class_decl
, 0,
11685 exprstmt
= NULL_TREE
;
11689 cond
= build (BIT_AND_EXPR
, integer_type_node
,
11690 in_charge_node
, integer_one_node
);
11691 expand_start_cond (cond
, 0);
11692 expand_expr_stmt (exprstmt
);
11693 expand_end_cond ();
11696 /* End of destructor. */
11697 expand_end_bindings (NULL_TREE
, getdecls() != NULL_TREE
, 0);
11698 poplevel (2, 0, 0); /* XXX change to 1 */
11700 /* Back to the top of destructor. */
11701 /* Dont execute destructor code if `this' is NULL. */
11702 mark
= get_last_insn ();
11703 last_parm_insn
= get_first_nonparm_insn ();
11704 if (last_parm_insn
== NULL_RTX
)
11705 last_parm_insn
= mark
;
11707 last_parm_insn
= previous_insn (last_parm_insn
);
11709 /* Make all virtual function table pointers in non-virtual base
11710 classes point to CURRENT_CLASS_TYPE's virtual function
11712 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_decl
);
11713 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
11714 expand_indirect_vtbls_init (binfo
, C_C_D
, current_class_decl
, 0);
11715 if (! ok_to_optimize_dtor
)
11717 cond
= build_binary_op (NE_EXPR
,
11718 current_class_decl
, integer_zero_node
, 1);
11719 expand_start_cond (cond
, 0);
11721 if (mark
!= get_last_insn ())
11722 reorder_insns (next_insn (mark
), get_last_insn (), last_parm_insn
);
11723 if (! ok_to_optimize_dtor
)
11724 expand_end_cond ();
11726 else if (current_function_assigns_this
)
11728 /* Does not need to call emit_base_init, because
11729 that is done (if needed) just after assignment to this
11732 if (DECL_CONSTRUCTOR_P (current_function_decl
))
11734 end_protect_partials ();
11735 expand_label (ctor_label
);
11736 ctor_label
= NULL_TREE
;
11740 decls
= getdecls ();
11741 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
11742 poplevel (decls
!= NULL_TREE
, 0, 0);
11744 c_expand_return (current_class_decl
);
11746 else if (TYPE_MAIN_VARIANT (TREE_TYPE (
11747 DECL_RESULT (current_function_decl
))) != void_type_node
11748 && return_label
!= NULL_RTX
)
11749 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
11751 current_function_assigns_this
= 0;
11752 current_function_just_assigned_this
= 0;
11753 base_init_expr
= NULL_TREE
;
11755 else if (DECL_CONSTRUCTOR_P (fndecl
))
11757 tree allocated_this
;
11758 tree cond
, thenclause
;
11759 /* Allow constructor for a type to get a new instance of the object
11760 using `build_new'. */
11761 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
11762 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
11764 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
11766 if (flag_this_is_variable
> 0)
11768 cond
= build_binary_op (EQ_EXPR
,
11769 current_class_decl
, integer_zero_node
, 1);
11770 thenclause
= build_modify_expr (current_class_decl
, NOP_EXPR
,
11771 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
11774 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
11776 /* must keep the first insn safe. */
11777 head
= get_insns ();
11779 /* this note will come up to the top with us. */
11780 mark
= get_last_insn ();
11782 if (flag_this_is_variable
> 0)
11784 expand_start_cond (cond
, 0);
11785 expand_expr_stmt (thenclause
);
11786 expand_end_cond ();
11790 if (DECL_NAME (fndecl
) == NULL_TREE
11791 && TREE_CHAIN (DECL_ARGUMENTS (fndecl
)) != NULL_TREE
)
11792 build_default_constructor (fndecl
);
11795 /* Emit insns from `emit_base_init' which sets up virtual
11796 function table pointer(s). */
11797 if (base_init_expr
)
11799 expand_expr_stmt (base_init_expr
);
11800 base_init_expr
= NULL_TREE
;
11803 /* This is where the body of the constructor begins.
11804 If there were no insns in this function body, then the
11805 last_parm_insn is also the last insn.
11807 If optimization is enabled, last_parm_insn may move, so
11808 we don't hold on to it (across emit_base_init). */
11809 last_parm_insn
= get_first_nonparm_insn ();
11810 if (last_parm_insn
== NULL_RTX
)
11811 last_parm_insn
= mark
;
11813 last_parm_insn
= previous_insn (last_parm_insn
);
11815 if (mark
!= get_last_insn ())
11816 reorder_insns (next_insn (mark
), get_last_insn (), last_parm_insn
);
11818 end_protect_partials ();
11820 /* This is where the body of the constructor ends. */
11821 expand_label (ctor_label
);
11822 ctor_label
= NULL_TREE
;
11826 decls
= getdecls ();
11827 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
11828 poplevel (decls
!= NULL_TREE
, 1, 0);
11831 c_expand_return (current_class_decl
);
11833 current_function_assigns_this
= 0;
11834 current_function_just_assigned_this
= 0;
11836 else if (IDENTIFIER_LENGTH (DECL_NAME (fndecl
)) == 4
11837 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl
)), "main")
11838 && DECL_CONTEXT (fndecl
) == NULL_TREE
)
11840 /* Make it so that `main' always returns 0 by default. */
11842 c_expand_return (integer_one_node
);
11844 c_expand_return (integer_zero_node
);
11847 else if (return_label
!= NULL_RTX
11848 && current_function_return_value
== NULL_TREE
11849 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
11850 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
11853 expand_gc_prologue_and_epilogue ();
11855 /* If this function is supposed to return a value, ensure that
11856 we do not fall into the cleanups by mistake. The end of our
11857 function will look like this:
11859 user code (may have return stmt somewhere)
11860 goto no_return_label
11865 NOTE_INSN_FUNCTION_END
11869 If the user omits a return stmt in the USER CODE section, we
11870 will have a control path which reaches NOTE_INSN_FUNCTION_END.
11871 Otherwise, we won't. */
11872 if (no_return_label
)
11874 DECL_CONTEXT (no_return_label
) = fndecl
;
11875 DECL_INITIAL (no_return_label
) = error_mark_node
;
11876 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
11877 DECL_SOURCE_LINE (no_return_label
) = lineno
;
11878 expand_goto (no_return_label
);
11883 /* remove the binding contour which is used
11884 to catch cleanup-generated temporaries. */
11885 expand_end_bindings (0, 0, 0);
11886 poplevel (0, 0, 0);
11890 /* Emit label at beginning of cleanup code for parameters. */
11891 emit_label (cleanup_label
);
11893 /* Get return value into register if that's where it's supposed to be. */
11894 if (original_result_rtx
)
11895 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
11897 /* Finish building code that will trigger warnings if users forget
11898 to make their functions return values. */
11899 if (no_return_label
|| cleanup_label
)
11900 emit_jump (return_label
);
11901 if (no_return_label
)
11903 /* We don't need to call `expand_*_return' here because we
11904 don't need any cleanups here--this path of code is only
11905 for error checking purposes. */
11906 expand_label (no_return_label
);
11909 /* Generate rtl for function exit. */
11910 expand_function_end (input_filename
, lineno
, 1);
11912 if (flag_handle_exceptions
)
11913 expand_exception_blocks();
11915 /* This must come after expand_function_end because cleanups might
11916 have declarations (from inline functions) that need to go into
11917 this function's blocks. */
11918 if (current_binding_level
->parm_flag
!= 1)
11919 my_friendly_abort (122);
11920 poplevel (1, 0, 1);
11922 /* reset scope for C++: if we were in the scope of a class,
11923 then when we finish this function, we are not longer so.
11924 This cannot be done until we know for sure that no more
11925 class members will ever be referenced in this function
11926 (i.e., calls to destructors). */
11927 if (current_class_name
)
11929 ctype
= current_class_type
;
11930 pop_nested_class (1);
11933 pop_memoized_context (1);
11935 /* Must mark the RESULT_DECL as being in this function. */
11936 DECL_CONTEXT (DECL_RESULT (fndecl
)) = DECL_INITIAL (fndecl
);
11938 /* Obey `register' declarations if `setjmp' is called in this fn. */
11939 if (flag_traditional
&& current_function_calls_setjmp
)
11940 setjmp_protect (DECL_INITIAL (fndecl
));
11942 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
11943 to the FUNCTION_DECL node itself. */
11944 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
11946 /* So we can tell if jump_optimize sets it to 1. */
11949 /* Run the optimizers and output the assembler code for this function. */
11950 rest_of_compilation (fndecl
);
11952 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
11954 /* Set DECL_EXTERNAL so that assemble_external will be called as
11955 necessary. We'll clear it again in finish_file. */
11956 if (! DECL_EXTERNAL (fndecl
))
11957 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
11958 DECL_EXTERNAL (fndecl
) = 1;
11959 mark_inline_for_output (fndecl
);
11962 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
11963 note_debug_info_needed (ctype
);
11965 current_function_returns_null
|= can_reach_end
;
11967 /* Since we don't normally go through c_expand_return for constructors,
11968 this normally gets the wrong value.
11969 Also, named return values have their return codes emitted after
11970 NOTE_INSN_FUNCTION_END, confusing jump.c. */
11971 if (DECL_CONSTRUCTOR_P (fndecl
)
11972 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
11973 current_function_returns_null
= 0;
11975 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
11976 cp_warning ("`noreturn' function `%D' does return", fndecl
);
11977 else if ((warn_return_type
|| pedantic
)
11978 && current_function_returns_null
11979 && TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)) != void_type_node
)
11981 /* If this function returns non-void and control can drop through,
11983 cp_pedwarn ("control reaches end of non-void function `%D'", fndecl
);
11985 /* With just -W, complain only if function returns both with
11986 and without a value. */
11987 else if (extra_warnings
11988 && current_function_returns_value
&& current_function_returns_null
)
11989 warning ("this function may return with or without a value");
11991 /* Free all the tree nodes making up this function. */
11992 /* Switch back to allocating nodes permanently
11993 until we start another function. */
11995 permanent_allocation (1);
11998 cadillac_finish_function (fndecl
);
12000 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
12002 /* Stop pointing to the local nodes about to be freed. */
12003 /* But DECL_INITIAL must remain nonzero so we know this
12004 was an actual function definition. */
12005 DECL_INITIAL (fndecl
) = error_mark_node
;
12006 if (! DECL_CONSTRUCTOR_P (fndecl
)
12007 || !TYPE_USES_VIRTUAL_BASECLASSES (TYPE_METHOD_BASETYPE (fntype
)))
12008 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
12011 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
12012 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
12013 if (DECL_STATIC_DESTRUCTOR (fndecl
))
12014 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
12018 /* Let the error reporting routines know that we're outside a
12019 function. For a nested function, this value is used in
12020 pop_cp_function_context and then reset via pop_function_context. */
12021 current_function_decl
= NULL_TREE
;
12024 named_label_uses
= NULL_TREE
;
12027 /* Create the FUNCTION_DECL for a function definition.
12028 LINE1 is the line number that the definition absolutely begins on.
12029 LINE2 is the line number that the name of the function appears on.
12030 DECLSPECS and DECLARATOR are the parts of the declaration;
12031 they describe the return type and the name of the function,
12032 but twisted together in a fashion that parallels the syntax of C.
12034 This function creates a binding context for the function body
12035 as well as setting up the FUNCTION_DECL in current_function_decl.
12037 Returns a FUNCTION_DECL on success.
12039 If the DECLARATOR is not suitable for a function (it defines a datum
12040 instead), we return 0, which tells yyparse to report a parse error.
12042 May return void_type_node indicating that this method is actually
12043 a friend. See grokfield for more details.
12045 Came here with a `.pushlevel' .
12047 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
12048 CHANGES TO CODE IN `grokfield'. */
12050 start_method (declspecs
, declarator
, raises
)
12051 tree declarator
, declspecs
, raises
;
12053 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0, raises
);
12055 /* Something too ugly to handle. */
12056 if (fndecl
== NULL_TREE
)
12059 /* Pass friends other than inline friend functions back. */
12060 if (TYPE_MAIN_VARIANT (fndecl
) == void_type_node
)
12063 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
12064 /* Not a function, tell parser to report parse error. */
12067 if (IS_SIGNATURE (current_class_type
))
12069 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
12070 /* In case we need this info later. */
12071 HAS_DEFAULT_IMPLEMENTATION (current_class_type
) = 1;
12074 if (DECL_IN_AGGR_P (fndecl
))
12076 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
12078 if (DECL_CONTEXT (fndecl
))
12079 cp_error ("`%D' is already defined in class %s", fndecl
,
12080 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
12082 return void_type_node
;
12085 DECL_THIS_INLINE (fndecl
) = 1;
12087 if (flag_default_inline
)
12088 DECL_INLINE (fndecl
) = 1;
12090 if (processing_template_defn
)
12092 SET_DECL_IMPLICIT_INSTANTIATION (fndecl
);
12093 repo_template_used (fndecl
);
12096 /* We read in the parameters on the maybepermanent_obstack,
12097 but we won't be getting back to them until after we
12098 may have clobbered them. So the call to preserve_data
12099 will keep them safe. */
12102 if (! DECL_FRIEND_P (fndecl
))
12104 if (DECL_CHAIN (fndecl
) != NULL_TREE
)
12106 /* Need a fresh node here so that we don't get circularity
12107 when we link these together. If FNDECL was a friend, then
12108 `pushdecl' does the right thing, which is nothing wrt its
12109 current value of DECL_CHAIN. */
12110 fndecl
= copy_node (fndecl
);
12112 if (TREE_CHAIN (fndecl
))
12114 fndecl
= copy_node (fndecl
);
12115 TREE_CHAIN (fndecl
) = NULL_TREE
;
12118 if (DECL_CONSTRUCTOR_P (fndecl
))
12120 if (! grok_ctor_properties (current_class_type
, fndecl
))
12121 return void_type_node
;
12123 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
12124 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
12127 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
12129 /* Make a place for the parms */
12131 current_binding_level
->parm_flag
= 1;
12133 DECL_IN_AGGR_P (fndecl
) = 1;
12137 /* Go through the motions of finishing a function definition.
12138 We don't compile this method until after the whole class has
12141 FINISH_METHOD must return something that looks as though it
12142 came from GROKFIELD (since we are defining a method, after all).
12144 This is called after parsing the body of the function definition.
12145 STMTS is the chain of statements that makes up the function body.
12147 DECL is the ..._DECL that `start_method' provided. */
12150 finish_method (decl
)
12153 register tree fndecl
= decl
;
12156 register tree link
;
12158 if (TYPE_MAIN_VARIANT (decl
) == void_type_node
)
12161 old_initial
= DECL_INITIAL (fndecl
);
12163 /* Undo the level for the parms (from start_method).
12164 This is like poplevel, but it causes nothing to be
12165 saved. Saving information here confuses symbol-table
12166 output routines. Besides, this information will
12167 be correctly output when this method is actually
12170 /* Clear out the meanings of the local variables of this level;
12171 also record in each decl which block it belongs to. */
12173 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
12175 if (DECL_NAME (link
) != NULL_TREE
)
12176 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
12177 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
12178 DECL_CONTEXT (link
) = NULL_TREE
;
12181 /* Restore all name-meanings of the outer levels
12182 that were shadowed by this level. */
12184 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
12185 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
12186 for (link
= current_binding_level
->class_shadowed
;
12187 link
; link
= TREE_CHAIN (link
))
12188 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
12189 for (link
= current_binding_level
->type_shadowed
;
12190 link
; link
= TREE_CHAIN (link
))
12191 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
12193 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
12194 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
12195 current_binding_level
->parm_flag
,
12196 current_binding_level
->keep
,
12197 current_binding_level
->tag_transparent
);
12199 poplevel (0, 0, 0);
12201 DECL_INITIAL (fndecl
) = old_initial
;
12203 /* We used to check if the context of FNDECL was different from
12204 current_class_type as another way to get inside here. This didn't work
12205 for String.cc in libg++. */
12206 if (DECL_FRIEND_P (fndecl
))
12208 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
12209 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
12210 decl
= void_type_node
;
12216 /* Called when a new struct TYPE is defined.
12217 If this structure or union completes the type of any previous
12218 variable declaration, lay it out and output its rtl. */
12221 hack_incomplete_structures (type
)
12226 if (current_binding_level
->n_incomplete
== 0)
12229 if (!type
) /* Don't do this for class templates. */
12232 for (decl
= current_binding_level
->names
; decl
; decl
= TREE_CHAIN (decl
))
12233 if (TREE_TYPE (decl
) == type
12234 || (TREE_TYPE (decl
)
12235 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
12236 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
12238 if (TREE_CODE (decl
) == TYPE_DECL
)
12239 layout_type (TREE_TYPE (decl
));
12242 int toplevel
= toplevel_bindings_p ();
12243 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
12244 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
12245 layout_type (TREE_TYPE (decl
));
12246 layout_decl (decl
, 0);
12247 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
12251 expand_decl (decl
);
12252 cleanup
= maybe_build_cleanup (decl
);
12253 expand_decl_init (decl
);
12254 if (! expand_decl_cleanup (decl
, cleanup
))
12255 cp_error ("parser lost in parsing declaration of `%D'",
12260 my_friendly_assert (current_binding_level->n_incomplete > 0, 164);
12262 --current_binding_level
->n_incomplete
;
12266 /* Nonzero if presently building a cleanup. Needed because
12267 SAVE_EXPRs are not the right things to use inside of cleanups.
12268 They are only ever evaluated once, where the cleanup
12269 might be evaluated several times. In this case, a later evaluation
12270 of the cleanup might fill in the SAVE_EXPR_RTL, and it will
12271 not be valid for an earlier cleanup. */
12273 int building_cleanup
;
12275 /* If DECL is of a type which needs a cleanup, build that cleanup here.
12276 We don't build cleanups if just going for syntax checking, since
12277 fixup_cleanups does not know how to not handle them.
12279 Don't build these on the momentary obstack; they must live
12280 the life of the binding contour. */
12282 maybe_build_cleanup (decl
)
12285 tree type
= TREE_TYPE (decl
);
12286 if (TYPE_NEEDS_DESTRUCTOR (type
))
12288 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
12290 int old_building_cleanup
= building_cleanup
;
12291 building_cleanup
= 1;
12293 if (TREE_CODE (decl
) != PARM_DECL
)
12294 temp
= suspend_momentary ();
12296 if (TREE_CODE (type
) == ARRAY_TYPE
)
12300 mark_addressable (decl
);
12301 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
12304 /* Optimize for space over speed here. */
12305 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
12306 || flag_expensive_optimizations
)
12307 flags
|= LOOKUP_NONVIRTUAL
;
12309 rval
= build_delete (TREE_TYPE (rval
), rval
, integer_two_node
, flags
, 0);
12311 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
12312 && ! TYPE_HAS_DESTRUCTOR (type
))
12313 rval
= build_compound_expr (tree_cons (NULL_TREE
, rval
,
12314 build_tree_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
12316 if (TREE_CODE (decl
) != PARM_DECL
)
12317 resume_momentary (temp
);
12319 building_cleanup
= old_building_cleanup
;
12326 /* Expand a C++ expression at the statement level.
12327 This is needed to ferret out nodes which have UNKNOWN_TYPE.
12328 The C++ type checker should get all of these out when
12329 expressions are combined with other, type-providing, expressions,
12330 leaving only orphan expressions, such as:
12332 &class::bar; / / takes its address, but does nothing with it.
12336 cplus_expand_expr_stmt (exp
)
12339 if (TREE_TYPE (exp
) == unknown_type_node
)
12341 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
12342 error ("address of overloaded function with no contextual type information");
12343 else if (TREE_CODE (exp
) == COMPONENT_REF
)
12344 warning ("useless reference to a member function name, did you forget the ()?");
12348 int remove_implicit_immediately
= 0;
12350 if (TREE_CODE (exp
) == FUNCTION_DECL
)
12352 cp_warning ("reference, not call, to function `%D'", exp
);
12353 warning ("at this point in file");
12357 /* We should do this eventually, but right now this causes regex.o from
12358 libg++ to miscompile, and tString to core dump. */
12359 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
12361 expand_expr_stmt (break_out_cleanups (exp
));
12364 /* Clean up any pending cleanups. This happens when a function call
12365 returns a cleanup-needing value that nobody uses. */
12366 expand_cleanups_to (NULL_TREE
);
12369 /* When a stmt has been parsed, this function is called.
12371 Currently, this function only does something within a
12372 constructor's scope: if a stmt has just assigned to this,
12373 and we are in a derived class, we call `emit_base_init'. */
12378 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
12381 if (current_function_assigns_this
12382 || ! current_function_just_assigned_this
)
12384 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12386 /* Constructors must wait until we are out of control
12387 zones before calling base constructors. */
12388 if (cond_stack
|| loop_stack
|| case_stack
)
12390 expand_expr_stmt (base_init_expr
);
12391 check_base_init (current_class_type
);
12393 current_function_assigns_this
= 1;
12396 cadillac_finish_stmt ();
12399 /* Change a static member function definition into a FUNCTION_TYPE, instead
12400 of the METHOD_TYPE that we create when it's originally parsed.
12402 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
12403 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
12404 other decls. Either pass the addresses of local variables or NULL. */
12407 revert_static_member_fn (decl
, fn
, argtypes
)
12408 tree
*decl
, *fn
, *argtypes
;
12411 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
12412 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
12414 args
= TREE_CHAIN (args
);
12415 tmp
= build_function_type (TREE_TYPE (function
), args
);
12416 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
12417 TYPE_VOLATILE (function
));
12418 tmp
= build_exception_variant (TYPE_METHOD_BASETYPE (function
), tmp
,
12419 TYPE_RAISES_EXCEPTIONS (function
));
12420 TREE_TYPE (*decl
) = tmp
;
12421 DECL_STATIC_FUNCTION_P (*decl
) = 1;
12429 id_in_current_class (id
)
12432 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
12439 int warn_about_return_type
;
12441 int just_assigned_this
;
12443 int temp_name_counter
;
12445 tree shadowed_labels
;
12449 tree base_init_list
;
12450 tree member_init_list
;
12451 tree base_init_expr
;
12455 struct cp_function
*next
;
12456 struct binding_level
*binding_level
;
12459 struct cp_function
*cp_function_chain
;
12461 extern int temp_name_counter
;
12463 /* Save and reinitialize the variables
12464 used during compilation of a C++ function. */
12467 push_cp_function_context (context
)
12470 struct cp_function
*p
12471 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
12473 push_function_context_to (context
);
12475 p
->next
= cp_function_chain
;
12476 cp_function_chain
= p
;
12478 p
->named_labels
= named_labels
;
12479 p
->shadowed_labels
= shadowed_labels
;
12480 p
->returns_value
= current_function_returns_value
;
12481 p
->returns_null
= current_function_returns_null
;
12482 p
->warn_about_return_type
= warn_about_return_type
;
12483 p
->binding_level
= current_binding_level
;
12484 p
->ctor_label
= ctor_label
;
12485 p
->dtor_label
= dtor_label
;
12486 p
->assigns_this
= current_function_assigns_this
;
12487 p
->just_assigned_this
= current_function_just_assigned_this
;
12488 p
->parms_stored
= current_function_parms_stored
;
12489 p
->result_rtx
= original_result_rtx
;
12490 p
->base_init_expr
= base_init_expr
;
12491 p
->protect_list
= protect_list
;
12492 p
->temp_name_counter
= temp_name_counter
;
12493 p
->base_init_list
= current_base_init_list
;
12494 p
->member_init_list
= current_member_init_list
;
12495 p
->class_decl
= current_class_decl
;
12499 /* Restore the variables used during compilation of a C++ function. */
12502 pop_cp_function_context (context
)
12505 struct cp_function
*p
= cp_function_chain
;
12508 /* Bring back all the labels that were shadowed. */
12509 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
12510 if (DECL_NAME (TREE_VALUE (link
)) != 0)
12511 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
12512 TREE_VALUE (link
));
12515 if (DECL_SAVED_INSNS (current_function_decl
) == 0)
12517 /* Stop pointing to the local nodes about to be freed. */
12518 /* But DECL_INITIAL must remain nonzero so we know this
12519 was an actual function definition. */
12520 DECL_INITIAL (current_function_decl
) = error_mark_node
;
12521 DECL_ARGUMENTS (current_function_decl
) = 0;
12525 pop_function_context_from (context
);
12527 cp_function_chain
= p
->next
;
12529 named_labels
= p
->named_labels
;
12530 shadowed_labels
= p
->shadowed_labels
;
12531 current_function_returns_value
= p
->returns_value
;
12532 current_function_returns_null
= p
->returns_null
;
12533 warn_about_return_type
= p
->warn_about_return_type
;
12534 current_binding_level
= p
->binding_level
;
12535 ctor_label
= p
->ctor_label
;
12536 dtor_label
= p
->dtor_label
;
12537 protect_list
= p
->protect_list
;
12538 current_function_assigns_this
= p
->assigns_this
;
12539 current_function_just_assigned_this
= p
->just_assigned_this
;
12540 current_function_parms_stored
= p
->parms_stored
;
12541 original_result_rtx
= p
->result_rtx
;
12542 base_init_expr
= p
->base_init_expr
;
12543 temp_name_counter
= p
->temp_name_counter
;
12544 current_base_init_list
= p
->base_init_list
;
12545 current_member_init_list
= p
->member_init_list
;
12546 current_class_decl
= p
->class_decl
;