1 /* Process declarations and variables for C compiler.
2 Copyright (C) 1988, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
3 Hacked by Michael Tiemann (tiemann@cygnus.com)
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
23 /* Process declarations and symbol lookup for C front end.
24 Also constructs types; the standard scalar types at initialization,
25 and structure, union, array and enum types when they are declared. */
27 /* ??? not all decl nodes are given the most useful possible
28 line numbers. For example, the CONST_DECLs for enum values. */
38 #include <sys/types.h>
49 #ifdef NEED_DECLARATION_FREE
50 extern void free
PROTO((void *));
53 #define obstack_chunk_alloc xmalloc
54 #define obstack_chunk_free free
56 extern tree builtin_return_address_fndecl
;
58 extern struct obstack permanent_obstack
;
60 extern int current_class_depth
;
62 extern tree static_ctors
, static_dtors
;
64 extern int static_labelno
;
66 /* Stack of places to restore the search obstack back to. */
68 /* Obstack used for remembering local class declarations (like
69 enums and static (const) members. */
71 struct obstack decl_obstack
;
72 static struct stack_level
*decl_stack
;
74 #ifndef CHAR_TYPE_SIZE
75 #define CHAR_TYPE_SIZE BITS_PER_UNIT
78 #ifndef SHORT_TYPE_SIZE
79 #define SHORT_TYPE_SIZE (BITS_PER_UNIT * MIN ((UNITS_PER_WORD + 1) / 2, 2))
83 #define INT_TYPE_SIZE BITS_PER_WORD
86 #ifndef LONG_TYPE_SIZE
87 #define LONG_TYPE_SIZE BITS_PER_WORD
90 #ifndef LONG_LONG_TYPE_SIZE
91 #define LONG_LONG_TYPE_SIZE (BITS_PER_WORD * 2)
94 #ifndef WCHAR_UNSIGNED
95 #define WCHAR_UNSIGNED 0
98 #ifndef FLOAT_TYPE_SIZE
99 #define FLOAT_TYPE_SIZE BITS_PER_WORD
102 #ifndef DOUBLE_TYPE_SIZE
103 #define DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
106 #ifndef LONG_DOUBLE_TYPE_SIZE
107 #define LONG_DOUBLE_TYPE_SIZE (BITS_PER_WORD * 2)
110 #ifndef BOOL_TYPE_SIZE
111 #ifdef SLOW_BYTE_ACCESS
112 #define BOOL_TYPE_SIZE ((SLOW_BYTE_ACCESS) ? (POINTER_SIZE) : (CHAR_TYPE_SIZE))
114 #define BOOL_TYPE_SIZE CHAR_TYPE_SIZE
118 /* We let tm.h override the types used here, to handle trivial differences
119 such as the choice of unsigned int or long unsigned int for size_t.
120 When machines start needing nontrivial differences in the size type,
121 it would be best to do something here to figure out automatically
122 from other information what type to use. */
125 #define SIZE_TYPE "long unsigned int"
129 #define PTRDIFF_TYPE "long int"
133 #define WCHAR_TYPE "int"
136 static tree grokparms
PROTO((tree
, int));
137 static tree lookup_nested_type
PROTO((tree
, tree
));
138 static char *redeclaration_error_message
PROTO((tree
, tree
));
139 static void revert_static_member_fn
PROTO((tree
*, tree
*, tree
*));
140 static tree push_overloaded_decl
PROTO((tree
, int));
141 static void push_overloaded_decl_top_level
PROTO((tree
, int));
143 static struct stack_level
*push_decl_level
PROTO((struct stack_level
*,
145 static void push_binding_level
PROTO((struct binding_level
*, int,
147 static void pop_binding_level
PROTO((void));
148 static void suspend_binding_level
PROTO((void));
149 static void resume_binding_level
PROTO((struct binding_level
*));
150 static struct binding_level
*make_binding_level
PROTO((void));
151 static int namespace_bindings_p
PROTO((void));
152 static void declare_namespace_level
PROTO((void));
153 static tree get_unique_name
PROTO((void));
154 static void signal_catch
PROTO((int));
155 static void storedecls
PROTO((tree
));
156 static void storetags
PROTO((tree
));
157 static void require_complete_types_for_parms
PROTO((tree
));
158 static void push_overloaded_decl_1
PROTO((tree
));
159 static int ambi_op_p
PROTO((tree
));
160 static int unary_op_p
PROTO((tree
));
161 static tree store_bindings
PROTO((tree
, tree
));
162 static tree lookup_tag_reverse
PROTO((tree
, tree
));
163 static tree obscure_complex_init
PROTO((tree
, tree
));
164 static tree maybe_build_cleanup_1
PROTO((tree
, tree
));
165 static tree lookup_name_real
PROTO((tree
, int, int));
166 static void warn_extern_redeclared_static
PROTO((tree
, tree
));
167 static void grok_reference_init
PROTO((tree
, tree
, tree
, tree
*));
168 static tree grokfndecl
PROTO((tree
, tree
, tree
, tree
, int,
170 tree
, tree
, tree
, int, int, int, int, int, int));
171 static tree grokvardecl
PROTO((tree
, tree
, RID_BIT_TYPE
*, int, int));
172 static tree lookup_tag
PROTO((enum tree_code
, tree
,
173 struct binding_level
*, int));
174 static void set_identifier_type_value_with_scope
175 PROTO((tree
, tree
, struct binding_level
*));
176 static void record_builtin_type
PROTO((enum rid
, char *, tree
));
177 static int member_function_or_else
PROTO((tree
, tree
, char *));
178 static void bad_specifiers
PROTO((tree
, char *, int, int, int, int,
181 /* a node which has tree code ERROR_MARK, and whose type is itself.
182 All erroneous expressions are replaced with this node. All functions
183 that accept nodes as arguments should avoid generating error messages
184 if this node is one of the arguments, since it is undesirable to get
185 multiple error messages from one error in the input. */
187 tree error_mark_node
;
189 /* Erroneous argument lists can use this *IFF* they do not modify it. */
190 tree error_mark_list
;
192 /* INTEGER_TYPE and REAL_TYPE nodes for the standard data types */
194 tree short_integer_type_node
;
195 tree integer_type_node
;
196 tree long_integer_type_node
;
197 tree long_long_integer_type_node
;
199 tree short_unsigned_type_node
;
200 tree unsigned_type_node
;
201 tree long_unsigned_type_node
;
202 tree long_long_unsigned_type_node
;
204 tree ptrdiff_type_node
;
206 tree unsigned_char_type_node
;
207 tree signed_char_type_node
;
209 tree wchar_type_node
;
210 tree signed_wchar_type_node
;
211 tree unsigned_wchar_type_node
;
213 tree wchar_decl_node
;
215 tree float_type_node
;
216 tree double_type_node
;
217 tree long_double_type_node
;
219 tree complex_integer_type_node
;
220 tree complex_float_type_node
;
221 tree complex_double_type_node
;
222 tree complex_long_double_type_node
;
224 tree intQI_type_node
;
225 tree intHI_type_node
;
226 tree intSI_type_node
;
227 tree intDI_type_node
;
229 tree unsigned_intQI_type_node
;
230 tree unsigned_intHI_type_node
;
231 tree unsigned_intSI_type_node
;
232 tree unsigned_intDI_type_node
;
234 /* a VOID_TYPE node, and the same, packaged in a TREE_LIST. */
236 tree void_type_node
, void_list_node
;
239 /* Nodes for types `void *' and `const void *'. */
242 static tree const_ptr_type_node
;
244 /* Nodes for types `char *' and `const char *'. */
246 tree string_type_node
, const_string_type_node
;
248 /* Type `char[256]' or something like it.
249 Used when an array of char is needed and the size is irrelevant. */
251 tree char_array_type_node
;
253 /* Type `int[256]' or something like it.
254 Used when an array of int needed and the size is irrelevant. */
256 tree int_array_type_node
;
258 /* Type `wchar_t[256]' or something like it.
259 Used when a wide string literal is created. */
261 tree wchar_array_type_node
;
263 /* The bool data type, and constants */
264 tree boolean_type_node
, boolean_true_node
, boolean_false_node
;
266 /* type `int ()' -- used for implicit declaration of functions. */
268 tree default_function_type
;
270 /* function types `double (double)' and `double (double, double)', etc. */
272 static tree double_ftype_double
, double_ftype_double_double
;
273 static tree int_ftype_int
, long_ftype_long
;
274 static tree float_ftype_float
;
275 static tree ldouble_ftype_ldouble
;
277 /* Function type `int (const void *, const void *, size_t)' */
278 static tree int_ftype_cptr_cptr_sizet
;
281 tree vtable_entry_type
;
282 tree delta_type_node
;
284 /* Old rtti stuff. */
285 tree __baselist_desc_type_node
;
286 tree __i_desc_type_node
, __m_desc_type_node
;
287 tree __t_desc_array_type
, __i_desc_array_type
, __m_desc_array_type
;
289 tree __t_desc_type_node
;
291 tree __tp_desc_type_node
;
293 tree __access_mode_type_node
;
294 tree __bltn_desc_type_node
, __user_desc_type_node
, __class_desc_type_node
;
295 tree __ptr_desc_type_node
, __attr_desc_type_node
, __func_desc_type_node
;
296 tree __ptmf_desc_type_node
, __ptmd_desc_type_node
;
298 /* Not needed yet? May be needed one day? */
299 tree __bltn_desc_array_type
, __user_desc_array_type
, __class_desc_array_type
;
300 tree __ptr_desc_array_type
, __attr_dec_array_type
, __func_desc_array_type
;
301 tree __ptmf_desc_array_type
, __ptmd_desc_array_type
;
304 tree class_star_type_node
;
305 tree class_type_node
, record_type_node
, union_type_node
, enum_type_node
;
306 tree unknown_type_node
;
307 tree opaque_type_node
, signature_type_node
;
308 tree sigtable_entry_type
;
310 /* Array type `vtable_entry_type[]' */
316 /* In a destructor, the point at which all derived class destroying
317 has been done, just before any base class destroying will be done. */
321 /* In a destructor, the last insn emitted after the start of the
322 function and the parms. */
324 static rtx last_dtor_insn
;
326 /* In a constructor, the last insn emitted after the start of the
327 function and the parms, but before the start of the exception
330 static rtx last_parm_cleanup_insn
;
332 /* In a constructor, the point at which we are ready to return
333 the pointer to the initialized object. */
337 /* A FUNCTION_DECL which can call `abort'. Not necessarily the
338 one that the user will declare, but sufficient to be called
339 by routines that want to abort the program. */
343 extern rtx cleanup_label
, return_label
;
345 /* If original DECL_RESULT of current function was a register,
346 but due to being an addressable named return value, would up
347 on the stack, this variable holds the named return value's
348 original location. */
349 static rtx original_result_rtx
;
351 /* Sequence of insns which represents base initialization. */
354 /* C++: Keep these around to reduce calls to `get_identifier'.
355 Identifiers for `this' in member functions and the auto-delete
356 parameter for destructors. */
357 tree this_identifier
, in_charge_identifier
;
358 tree ctor_identifier
, dtor_identifier
;
359 /* Used in pointer to member functions, in vtables, and in sigtables. */
360 tree pfn_identifier
, index_identifier
, delta_identifier
, delta2_identifier
;
361 tree pfn_or_delta2_identifier
, tag_identifier
;
362 tree vt_off_identifier
;
364 struct named_label_list
366 struct binding_level
*binding_level
;
369 char *filename_o_goto
;
371 struct named_label_list
*next
;
374 /* A list (chain of TREE_LIST nodes) of named label uses.
375 The TREE_PURPOSE field is the list of variables defined
376 the the label's scope defined at the point of use.
377 The TREE_VALUE field is the LABEL_DECL used.
378 The TREE_TYPE field holds `current_binding_level' at the
379 point of the label's use.
381 BWAHAHAAHAHahhahahahaah. No, no, no, said the little chicken.
383 Look at the pretty struct named_label_list. See the pretty struct
384 with the pretty named fields that describe what they do. See the
385 pretty lack of gratuitous casts. Notice the code got a lot cleaner.
387 Used only for jumps to as-yet undefined labels, since
388 jumps to defined labels can have their validity checked
391 static struct named_label_list
*named_label_uses
= NULL
;
393 /* A list of objects which have constructors or destructors
394 which reside in the global scope. The decl is stored in
395 the TREE_VALUE slot and the initializer is stored
396 in the TREE_PURPOSE slot. */
397 tree static_aggregates
;
401 /* Two expressions that are constants with value zero.
402 The first is of type `int', the second of type `void *'. */
404 tree integer_zero_node
;
405 tree null_pointer_node
;
407 /* The value for __null (NULL), either of type `void *' or, with -ansi,
408 an integer type of the same size. */
412 /* A node for the integer constants 1, 2, and 3. */
414 tree integer_one_node
, integer_two_node
, integer_three_node
;
416 /* While defining an enum type, this is 1 plus the last enumerator
419 static tree enum_next_value
;
421 /* Nonzero means that there was overflow computing enum_next_value. */
423 static int enum_overflow
;
425 /* Parsing a function declarator leaves a list of parameter names
426 or a chain or parameter decls here. */
428 tree last_function_parms
;
430 /* Parsing a function declarator leaves here a chain of structure
431 and enum types declared in the parmlist. */
433 static tree last_function_parm_tags
;
435 /* After parsing the declarator that starts a function definition,
436 `start_function' puts here the list of parameter names or chain of decls.
437 `store_parm_decls' finds it here. */
439 static tree current_function_parms
;
441 /* Similar, for last_function_parm_tags. */
442 static tree current_function_parm_tags
;
444 /* A list (chain of TREE_LIST nodes) of all LABEL_DECLs in the function
445 that have names. Here so we can clear out their names' definitions
446 at the end of the function. */
448 static tree named_labels
;
450 /* A list of LABEL_DECLs from outer contexts that are currently shadowed. */
452 static tree shadowed_labels
;
454 /* The FUNCTION_DECL for the function currently being compiled,
455 or 0 if between functions. */
456 tree current_function_decl
;
458 /* Set to 0 at beginning of a function definition, set to 1 if
459 a return statement that specifies a return value is seen. */
461 int current_function_returns_value
;
463 /* Set to 0 at beginning of a function definition, set to 1 if
464 a return statement with no argument is seen. */
466 int current_function_returns_null
;
468 /* Set to 0 at beginning of a function definition, and whenever
469 a label (case or named) is defined. Set to value of expression
470 returned from function when that value can be transformed into
471 a named return value. */
473 tree current_function_return_value
;
475 /* Set to nonzero by `grokdeclarator' for a function
476 whose return type is defaulted, if warnings for this are desired. */
478 static int warn_about_return_type
;
480 /* Nonzero means give `double' the same size as `float'. */
482 extern int flag_short_double
;
484 /* Nonzero means don't recognize any builtin functions. */
486 extern int flag_no_builtin
;
488 /* Nonzero means don't recognize the non-ANSI builtin functions.
491 extern int flag_no_nonansi_builtin
;
493 /* Nonzero means enable obscure ANSI features and disable GNU extensions
494 that might cause ANSI-compliant code to be miscompiled. */
496 extern int flag_ansi
;
498 /* Nonzero if we want to support huge (> 2^(sizeof(short)*8-1) bytes)
500 extern int flag_huge_objects
;
502 /* Nonzero if we want to conserve space in the .o files. We do this
503 by putting uninitialized data and runtime initialized data into
504 .common instead of .data at the expense of not flagging multiple
506 extern int flag_conserve_space
;
508 /* Pointers to the base and current top of the language name stack. */
510 extern tree
*current_lang_base
, *current_lang_stack
;
512 /* C and C++ flags are in decl2.c. */
514 /* Set to 0 at beginning of a constructor, set to 1
515 if that function does an allocation before referencing its
516 instance variable. */
517 static int current_function_assigns_this
;
518 int current_function_just_assigned_this
;
520 /* Set to 0 at beginning of a function. Set non-zero when
521 store_parm_decls is called. Don't call store_parm_decls
522 if this flag is non-zero! */
523 int current_function_parms_stored
;
525 /* Flag used when debugging spew.c */
527 extern int spew_debug
;
529 /* This is a copy of the class_shadowed list of the previous class binding
530 contour when at global scope. It's used to reset IDENTIFIER_CLASS_VALUEs
531 when entering another class scope (i.e. a cache miss). */
532 extern tree previous_class_values
;
534 /* A expression of value 0 with the same precision as a sizetype
536 tree signed_size_zero_node
;
539 /* Allocate a level of searching. */
543 push_decl_level (stack
, obstack
)
544 struct stack_level
*stack
;
545 struct obstack
*obstack
;
547 struct stack_level tem
;
550 return push_stack_level (obstack
, (char *)&tem
, sizeof (tem
));
553 /* For each binding contour we allocate a binding_level structure
554 which records the names defined in that contour.
557 1) one for each function definition,
558 where internal declarations of the parameters appear.
559 2) one for each compound statement,
560 to record its declarations.
562 The current meaning of a name can be found by searching the levels
563 from the current one out to the global one.
565 Off to the side, may be the class_binding_level. This exists only
566 to catch class-local declarations. It is otherwise nonexistent.
568 Also there may be binding levels that catch cleanups that must be
569 run when exceptions occur. */
571 /* Note that the information in the `names' component of the global contour
572 is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
576 /* A chain of _DECL nodes for all variables, constants, functions,
577 and typedef types. These are in the reverse of the order
581 /* A list of structure, union and enum definitions, for looking up
583 It is a chain of TREE_LIST nodes, each of whose TREE_PURPOSE is a name,
584 or NULL_TREE; and whose TREE_VALUE is a RECORD_TYPE, UNION_TYPE,
585 or ENUMERAL_TYPE node.
587 C++: the TREE_VALUE nodes can be simple types for
588 component_bindings. */
591 /* For each level, a list of shadowed outer-level local definitions
592 to be restored when this level is popped.
593 Each link is a TREE_LIST whose TREE_PURPOSE is an identifier and
594 whose TREE_VALUE is its old definition (a kind of ..._DECL node). */
597 /* Same, for IDENTIFIER_CLASS_VALUE. */
600 /* Same, for IDENTIFIER_TYPE_VALUE. */
603 /* For each level (except not the global one),
604 a chain of BLOCK nodes for all the levels
605 that were entered and exited one level down. */
608 /* The BLOCK node for this level, if one has been preallocated.
609 If 0, the BLOCK is allocated (if needed) when the level is popped. */
612 /* The binding level which this one is contained in (inherits from). */
613 struct binding_level
*level_chain
;
615 /* List of decls in `names' that have incomplete
616 structure or union types. */
619 /* List of VAR_DECLS saved from a previous for statement.
620 These would be dead in ANSI-conforming code, but might
621 be referenced in ARM-era code. */
622 tree dead_vars_from_for
;
624 /* 1 for the level that holds the parameters of a function.
625 2 for the level that holds a class declaration.
626 3 for levels that hold parameter declarations. */
627 unsigned parm_flag
: 4;
629 /* 1 means make a BLOCK for this level regardless of all else.
630 2 for temporary binding contours created by the compiler. */
633 /* Nonzero if this level "doesn't exist" for tags. */
634 unsigned tag_transparent
: 1;
636 /* Nonzero if this level can safely have additional
637 cleanup-needing variables added to it. */
638 unsigned more_cleanups_ok
: 1;
639 unsigned have_cleanups
: 1;
641 /* Nonzero if this level is for storing the decls for template
642 parameters and generic decls; these decls will be discarded and
643 replaced with a TEMPLATE_DECL. */
644 unsigned pseudo_global
: 1;
646 /* This is set for a namespace binding level. */
647 unsigned namespace_p
: 1;
649 /* True if this level is that of a for-statement where we need to
650 worry about ambiguous (ARM or ANSI) scope rules. */
651 unsigned is_for_scope
: 1;
653 /* Two bits left for this word. */
655 #if defined(DEBUG_CP_BINDING_LEVELS)
656 /* Binding depth at which this level began. */
657 unsigned binding_depth
;
658 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
661 #define NULL_BINDING_LEVEL ((struct binding_level *) NULL)
663 /* The (non-class) binding level currently in effect. */
665 static struct binding_level
*current_binding_level
;
667 /* The binding level of the current class, if any. */
669 static struct binding_level
*class_binding_level
;
671 /* The current (class or non-class) binding level currently in effect. */
673 #define inner_binding_level \
674 (class_binding_level ? class_binding_level : current_binding_level)
676 /* A chain of binding_level structures awaiting reuse. */
678 static struct binding_level
*free_binding_level
;
680 /* The outermost binding level, for names of file scope.
681 This is created when the compiler is started and exists
682 through the entire run. */
684 static struct binding_level
*global_binding_level
;
686 /* Binding level structures are initialized by copying this one. */
688 static struct binding_level clear_binding_level
;
690 /* Nonzero means unconditionally make a BLOCK for the next level pushed. */
692 static int keep_next_level_flag
;
694 #if defined(DEBUG_CP_BINDING_LEVELS)
695 static int binding_depth
= 0;
696 static int is_class_level
= 0;
703 for (i
= 0; i
< binding_depth
*2; i
++)
706 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
708 static tree pushdecl_with_scope
PROTO((tree
, struct binding_level
*));
711 push_binding_level (newlevel
, tag_transparent
, keep
)
712 struct binding_level
*newlevel
;
713 int tag_transparent
, keep
;
715 /* Add this level to the front of the chain (stack) of levels that
717 *newlevel
= clear_binding_level
;
718 if (class_binding_level
)
720 newlevel
->level_chain
= class_binding_level
;
721 class_binding_level
= (struct binding_level
*)0;
725 newlevel
->level_chain
= current_binding_level
;
727 current_binding_level
= newlevel
;
728 newlevel
->tag_transparent
= tag_transparent
;
729 newlevel
->more_cleanups_ok
= 1;
730 newlevel
->keep
= keep
;
731 #if defined(DEBUG_CP_BINDING_LEVELS)
732 newlevel
->binding_depth
= binding_depth
;
734 fprintf (stderr
, "push %s level 0x%08x line %d\n",
735 (is_class_level
) ? "class" : "block", newlevel
, lineno
);
738 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
744 if (class_binding_level
)
745 current_binding_level
= class_binding_level
;
747 if (global_binding_level
)
749 /* cannot pop a level, if there are none left to pop. */
750 if (current_binding_level
== global_binding_level
)
751 my_friendly_abort (123);
753 /* Pop the current level, and free the structure for reuse. */
754 #if defined(DEBUG_CP_BINDING_LEVELS)
757 fprintf (stderr
, "pop %s level 0x%08x line %d\n",
758 (is_class_level
) ? "class" : "block",
759 current_binding_level
, lineno
);
760 if (is_class_level
!= (current_binding_level
== class_binding_level
))
763 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
766 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
768 register struct binding_level
*level
= current_binding_level
;
769 current_binding_level
= current_binding_level
->level_chain
;
770 level
->level_chain
= free_binding_level
;
771 #if 0 /* defined(DEBUG_CP_BINDING_LEVELS) */
772 if (level
->binding_depth
!= binding_depth
)
774 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
775 free_binding_level
= level
;
777 class_binding_level
= current_binding_level
;
778 if (class_binding_level
->parm_flag
!= 2)
779 class_binding_level
= 0;
780 while (current_binding_level
->parm_flag
== 2)
781 current_binding_level
= current_binding_level
->level_chain
;
786 suspend_binding_level ()
788 if (class_binding_level
)
789 current_binding_level
= class_binding_level
;
791 if (global_binding_level
)
793 /* cannot suspend a level, if there are none left to suspend. */
794 if (current_binding_level
== global_binding_level
)
795 my_friendly_abort (123);
797 /* Suspend the current level. */
798 #if defined(DEBUG_CP_BINDING_LEVELS)
801 fprintf (stderr
, "suspend %s level 0x%08x line %d\n",
802 (is_class_level
) ? "class" : "block",
803 current_binding_level
, lineno
);
804 if (is_class_level
!= (current_binding_level
== class_binding_level
))
807 fprintf (stderr
, "XXX is_class_level != (current_binding_level == class_binding_level)\n");
810 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
812 current_binding_level
= current_binding_level
->level_chain
;
813 class_binding_level
= current_binding_level
;
814 if (class_binding_level
->parm_flag
!= 2)
815 class_binding_level
= 0;
816 while (current_binding_level
->parm_flag
== 2)
817 current_binding_level
= current_binding_level
->level_chain
;
822 resume_binding_level (b
)
823 struct binding_level
*b
;
825 if (class_binding_level
)
828 /* These are here because we cannot deal with shadows yet. */
829 sorry ("cannot resume a namespace inside class");
832 b
->level_chain
= class_binding_level
;
833 class_binding_level
= (struct binding_level
*)0;
839 /* These are here because we cannot deal with shadows yet. */
840 if (b
->level_chain
!= current_binding_level
)
842 sorry ("cannot resume a namespace inside a different namespace");
846 b
->level_chain
= current_binding_level
;
848 current_binding_level
= b
;
849 #if defined(DEBUG_CP_BINDING_LEVELS)
850 b
->binding_depth
= binding_depth
;
852 fprintf (stderr
, "resume %s level 0x%08x line %d\n",
853 (is_class_level
) ? "class" : "block", b
, lineno
);
856 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
859 /* Create a new `struct binding_level'. */
862 struct binding_level
*
863 make_binding_level ()
866 return (struct binding_level
*) xmalloc (sizeof (struct binding_level
));
869 /* Nonzero if we are currently in the global binding level. */
874 return current_binding_level
== global_binding_level
;
877 /* Nonzero if we are currently in a toplevel binding level. This
878 means either the global binding level or a namespace in a toplevel
882 toplevel_bindings_p ()
884 struct binding_level
*b
= current_binding_level
;
888 if (b
== global_binding_level
)
890 if (b
->pseudo_global
)
892 if (! b
->namespace_p
)
898 /* Nonzero if this is a namespace scope. */
901 namespace_bindings_p ()
903 return current_binding_level
->namespace_p
;
909 keep_next_level_flag
= 1;
912 /* Nonzero if the current level needs to have a BLOCK made. */
917 return (current_binding_level
->blocks
!= NULL_TREE
918 || current_binding_level
->keep
919 || current_binding_level
->names
!= NULL_TREE
920 || (current_binding_level
->tags
!= NULL_TREE
921 && !current_binding_level
->tag_transparent
));
924 /* Identify this binding level as a level of parameters. */
927 declare_parm_level ()
929 current_binding_level
->parm_flag
= 1;
933 declare_pseudo_global_level ()
935 current_binding_level
->pseudo_global
= 1;
939 declare_namespace_level ()
941 current_binding_level
->namespace_p
= 1;
945 pseudo_global_level_p ()
947 return current_binding_level
->pseudo_global
;
951 set_class_shadows (shadows
)
954 class_binding_level
->class_shadowed
= shadows
;
957 /* Enter a new binding level.
958 If TAG_TRANSPARENT is nonzero, do so only for the name space of variables,
959 not for that of tags. */
962 pushlevel (tag_transparent
)
965 register struct binding_level
*newlevel
= NULL_BINDING_LEVEL
;
967 /* If this is the top level of a function,
968 just make sure that NAMED_LABELS is 0.
969 They should have been set to 0 at the end of the previous function. */
971 if (current_binding_level
== global_binding_level
)
972 my_friendly_assert (named_labels
== NULL_TREE
, 134);
974 /* Reuse or create a struct for this binding level. */
976 #if defined(DEBUG_CP_BINDING_LEVELS)
978 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
979 if (free_binding_level
)
980 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
982 newlevel
= free_binding_level
;
983 free_binding_level
= free_binding_level
->level_chain
;
987 newlevel
= make_binding_level ();
990 push_binding_level (newlevel
, tag_transparent
, keep_next_level_flag
);
991 GNU_xref_start_scope ((HOST_WIDE_INT
) newlevel
);
992 keep_next_level_flag
= 0;
996 note_level_for_for ()
998 current_binding_level
->is_for_scope
= 1;
1002 pushlevel_temporary (tag_transparent
)
1003 int tag_transparent
;
1005 pushlevel (tag_transparent
);
1006 current_binding_level
->keep
= 2;
1009 /* Note we don't call push_momentary() here. Otherwise, it would cause
1010 cleanups to be allocated on the momentary obstack, and they will be
1011 overwritten by the next statement. */
1013 expand_start_bindings (0);
1016 /* Exit a binding level.
1017 Pop the level off, and restore the state of the identifier-decl mappings
1018 that were in effect when this level was entered.
1020 If KEEP == 1, this level had explicit declarations, so
1021 and create a "block" (a BLOCK node) for the level
1022 to record its declarations and subblocks for symbol table output.
1024 If KEEP == 2, this level's subblocks go to the front,
1025 not the back of the current binding level. This happens,
1026 for instance, when code for constructors and destructors
1027 need to generate code at the end of a function which must
1028 be moved up to the front of the function.
1030 If FUNCTIONBODY is nonzero, this level is the body of a function,
1031 so create a block as if KEEP were set and also clear out all
1034 If REVERSE is nonzero, reverse the order of decls before putting
1035 them into the BLOCK. */
1038 poplevel (keep
, reverse
, functionbody
)
1044 /* The chain of decls was accumulated in reverse order.
1045 Put it into forward order, just for cleanliness. */
1047 int tmp
= functionbody
;
1048 int real_functionbody
= current_binding_level
->keep
== 2
1049 ? ((functionbody
= 0), tmp
) : functionbody
;
1050 tree tags
= functionbody
>= 0 ? current_binding_level
->tags
: 0;
1051 tree subblocks
= functionbody
>= 0 ? current_binding_level
->blocks
: 0;
1052 tree block
= NULL_TREE
;
1054 int block_previously_created
;
1056 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
1057 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
1058 current_binding_level
->parm_flag
,
1059 current_binding_level
->keep
);
1061 if (current_binding_level
->keep
== 1)
1064 /* Get the decls in the order they were written.
1065 Usually current_binding_level->names is in reverse order.
1066 But parameter decls were previously put in forward order. */
1069 current_binding_level
->names
1070 = decls
= nreverse (current_binding_level
->names
);
1072 decls
= current_binding_level
->names
;
1074 /* Output any nested inline functions within this block
1075 if they weren't already output. */
1077 for (decl
= decls
; decl
; decl
= TREE_CHAIN (decl
))
1078 if (TREE_CODE (decl
) == FUNCTION_DECL
1079 && ! TREE_ASM_WRITTEN (decl
)
1080 && DECL_INITIAL (decl
) != NULL_TREE
1081 && TREE_ADDRESSABLE (decl
)
1082 && decl_function_context (decl
) == current_function_decl
)
1084 /* If this decl was copied from a file-scope decl
1085 on account of a block-scope extern decl,
1086 propagate TREE_ADDRESSABLE to the file-scope decl. */
1087 if (DECL_ABSTRACT_ORIGIN (decl
) != NULL_TREE
)
1088 TREE_ADDRESSABLE (DECL_ABSTRACT_ORIGIN (decl
)) = 1;
1091 push_function_context ();
1092 output_inline_function (decl
);
1093 pop_function_context ();
1097 /* If there were any declarations or structure tags in that level,
1098 or if this level is a function body,
1099 create a BLOCK to record them for the life of this function. */
1102 block_previously_created
= (current_binding_level
->this_block
!= NULL_TREE
);
1103 if (block_previously_created
)
1104 block
= current_binding_level
->this_block
;
1105 else if (keep
== 1 || functionbody
)
1106 block
= make_node (BLOCK
);
1107 if (block
!= NULL_TREE
)
1109 if (block_previously_created
)
1111 if (decls
|| tags
|| subblocks
)
1113 if (BLOCK_VARS (block
) || BLOCK_TYPE_TAGS (block
))
1115 warning ("internal compiler error: debugging info corrupted");
1117 BLOCK_VARS (block
) = decls
;
1118 BLOCK_TYPE_TAGS (block
) = tags
;
1120 /* We can have previous subblocks and new subblocks when
1121 doing fixup_gotos with complex cleanups. We chain the new
1122 subblocks onto the end of any pre-existing subblocks. */
1123 BLOCK_SUBBLOCKS (block
) = chainon (BLOCK_SUBBLOCKS (block
),
1126 /* If we created the block earlier on, and we are just
1127 diddling it now, then it already should have a proper
1128 BLOCK_END_NOTE value associated with it. */
1132 BLOCK_VARS (block
) = decls
;
1133 BLOCK_TYPE_TAGS (block
) = tags
;
1134 BLOCK_SUBBLOCKS (block
) = subblocks
;
1135 /* Otherwise, for a new block, install a new BLOCK_END_NOTE value. */
1136 remember_end_note (block
);
1140 /* In each subblock, record that this is its superior. */
1143 for (link
= subblocks
; link
; link
= TREE_CHAIN (link
))
1144 BLOCK_SUPERCONTEXT (link
) = block
;
1146 /* Clear out the meanings of the local variables of this level. */
1148 if (current_binding_level
->is_for_scope
&& flag_new_for_scope
== 1)
1150 struct binding_level
*outer
= current_binding_level
->level_chain
;
1151 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1153 if (TREE_CODE (link
) == VAR_DECL
)
1154 DECL_DEAD_FOR_LOCAL (link
) = 1;
1156 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1159 /* Save declarations made in a 'for' statement so we can support pre-ANSI
1160 'for' scoping semantics. */
1162 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
1164 tree id
= TREE_PURPOSE (link
);
1165 tree decl
= IDENTIFIER_LOCAL_VALUE (id
);
1167 if (decl
&& DECL_DEAD_FOR_LOCAL (decl
))
1169 /* In this case keep the dead for-decl visible,
1170 but remember what (if anything) it shadowed. */
1171 DECL_SHADOWED_FOR_VAR (decl
) = TREE_VALUE (link
);
1172 TREE_CHAIN (decl
) = outer
->dead_vars_from_for
;
1173 outer
->dead_vars_from_for
= decl
;
1176 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VALUE (link
);
1179 else /* Not special for scope. */
1181 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1183 if (DECL_NAME (link
) != NULL_TREE
)
1185 /* If the ident. was used or addressed via a local extern decl,
1186 don't forget that fact. */
1187 if (DECL_EXTERNAL (link
))
1189 if (TREE_USED (link
))
1190 TREE_USED (DECL_ASSEMBLER_NAME (link
)) = 1;
1191 if (TREE_ADDRESSABLE (link
))
1192 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link
)) = 1;
1194 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1198 /* Restore all name-meanings of the outer levels
1199 that were shadowed by this level. */
1201 for (link
= current_binding_level
->shadowed
;
1202 link
; link
= TREE_CHAIN (link
))
1203 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1205 /* We first restore the regular decls and *then* the dead_vars_from_for
1206 to handle this case:
1210 for (int i; ; ) { ...} // i#2
1214 In this case, we want remove the binding for i#3, restoring
1215 that of i#2. Then we want to remove the binding for i#2,
1216 and restore that of i#1. */
1218 link
= current_binding_level
->dead_vars_from_for
;
1219 for (; link
!= NULL_TREE
; link
= TREE_CHAIN (link
))
1221 tree id
= DECL_NAME (link
);
1222 if (IDENTIFIER_LOCAL_VALUE (id
) == link
)
1223 IDENTIFIER_LOCAL_VALUE (id
) = DECL_SHADOWED_FOR_VAR (link
);
1226 for (link
= current_binding_level
->class_shadowed
;
1227 link
; link
= TREE_CHAIN (link
))
1228 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1229 for (link
= current_binding_level
->type_shadowed
;
1230 link
; link
= TREE_CHAIN (link
))
1231 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1234 /* If the level being exited is the top level of a function,
1235 check over all the labels. */
1239 /* If this is the top level block of a function,
1240 the vars are the function's parameters.
1241 Don't leave them in the BLOCK because they are
1242 found in the FUNCTION_DECL instead. */
1244 BLOCK_VARS (block
) = 0;
1246 /* Clear out the definitions of all label names,
1247 since their scopes end here. */
1249 for (link
= named_labels
; link
; link
= TREE_CHAIN (link
))
1251 register tree label
= TREE_VALUE (link
);
1253 if (DECL_INITIAL (label
) == NULL_TREE
)
1255 cp_error_at ("label `%D' used but not defined", label
);
1256 /* Avoid crashing later. */
1257 define_label (input_filename
, 1, DECL_NAME (label
));
1259 else if (warn_unused
&& !TREE_USED (label
))
1260 cp_warning_at ("label `%D' defined but not used", label
);
1261 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (label
), NULL_TREE
);
1263 /* Put the labels into the "variables" of the
1264 top-level block, so debugger can see them. */
1265 TREE_CHAIN (label
) = BLOCK_VARS (block
);
1266 BLOCK_VARS (block
) = label
;
1269 named_labels
= NULL_TREE
;
1272 /* Any uses of undefined labels now operate under constraints
1273 of next binding contour. */
1275 struct binding_level
*level_chain
;
1276 level_chain
= current_binding_level
->level_chain
;
1279 struct named_label_list
*labels
;
1280 for (labels
= named_label_uses
; labels
; labels
= labels
->next
)
1281 if (labels
->binding_level
== current_binding_level
)
1283 labels
->binding_level
= level_chain
;
1284 labels
->names_in_scope
= level_chain
->names
;
1289 tmp
= current_binding_level
->keep
;
1291 pop_binding_level ();
1293 DECL_INITIAL (current_function_decl
) = block
;
1296 if (!block_previously_created
)
1297 current_binding_level
->blocks
1298 = chainon (current_binding_level
->blocks
, block
);
1300 /* If we did not make a block for the level just exited,
1301 any blocks made for inner levels
1302 (since they cannot be recorded as subblocks in that level)
1303 must be carried forward so they will later become subblocks
1304 of something else. */
1308 current_binding_level
->blocks
1309 = chainon (subblocks
, current_binding_level
->blocks
);
1311 current_binding_level
->blocks
1312 = chainon (current_binding_level
->blocks
, subblocks
);
1315 /* Take care of compiler's internal binding structures. */
1318 expand_end_bindings (getdecls (), keep
, 1);
1319 /* Each and every BLOCK node created here in `poplevel' is important
1320 (e.g. for proper debugging information) so if we created one
1321 earlier, mark it as "used". */
1323 TREE_USED (block
) = 1;
1324 block
= poplevel (keep
, reverse
, real_functionbody
);
1327 /* Each and every BLOCK node created here in `poplevel' is important
1328 (e.g. for proper debugging information) so if we created one
1329 earlier, mark it as "used". */
1331 TREE_USED (block
) = 1;
1335 /* Resume a binding level for a namespace. */
1339 struct binding_level
*b
;
1343 resume_binding_level (b
);
1345 /* Resume the variable caches. */
1346 decls
= current_binding_level
->names
;
1348 /* Restore the meanings of the local variables of this level. */
1350 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1352 /* If it doesn't have a name, there is nothing left to do with it. */
1353 if (DECL_NAME (link
) == NULL_TREE
)
1356 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = link
;
1358 /* If this is a TYPE_DECL, push it into the type value slot. */
1359 if (TREE_CODE (link
) == TYPE_DECL
)
1360 SET_IDENTIFIER_TYPE_VALUE (DECL_NAME (link
), TREE_TYPE (link
));
1364 /* Delete the node BLOCK from the current binding level.
1365 This is used for the block inside a stmt expr ({...})
1366 so that the block can be reinserted where appropriate. */
1369 delete_block (block
)
1373 if (current_binding_level
->blocks
== block
)
1374 current_binding_level
->blocks
= TREE_CHAIN (block
);
1375 for (t
= current_binding_level
->blocks
; t
;)
1377 if (TREE_CHAIN (t
) == block
)
1378 TREE_CHAIN (t
) = TREE_CHAIN (block
);
1382 TREE_CHAIN (block
) = NULL_TREE
;
1383 /* Clear TREE_USED which is always set by poplevel.
1384 The flag is set again if insert_block is called. */
1385 TREE_USED (block
) = 0;
1388 /* Insert BLOCK at the end of the list of subblocks of the
1389 current binding level. This is used when a BIND_EXPR is expanded,
1390 to handle the BLOCK node inside the BIND_EXPR. */
1393 insert_block (block
)
1396 TREE_USED (block
) = 1;
1397 current_binding_level
->blocks
1398 = chainon (current_binding_level
->blocks
, block
);
1401 /* Add BLOCK to the current list of blocks for this binding contour. */
1404 add_block_current_level (block
)
1407 current_binding_level
->blocks
1408 = chainon (current_binding_level
->blocks
, block
);
1411 /* Set the BLOCK node for the innermost scope
1412 (the one we are currently in). */
1416 register tree block
;
1418 current_binding_level
->this_block
= block
;
1421 /* Do a pushlevel for class declarations. */
1426 register struct binding_level
*newlevel
;
1428 /* Reuse or create a struct for this binding level. */
1429 #if defined(DEBUG_CP_BINDING_LEVELS)
1431 #else /* !defined(DEBUG_CP_BINDING_LEVELS) */
1432 if (free_binding_level
)
1433 #endif /* !defined(DEBUG_CP_BINDING_LEVELS) */
1435 newlevel
= free_binding_level
;
1436 free_binding_level
= free_binding_level
->level_chain
;
1440 newlevel
= make_binding_level ();
1443 #if defined(DEBUG_CP_BINDING_LEVELS)
1445 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1447 push_binding_level (newlevel
, 0, 0);
1449 decl_stack
= push_decl_level (decl_stack
, &decl_obstack
);
1450 class_binding_level
= current_binding_level
;
1451 class_binding_level
->parm_flag
= 2;
1452 /* We have just pushed into a new binding level. Now, fake out the rest
1453 of the compiler. Set the `current_binding_level' back to point to
1454 the most closely containing non-class binding level. */
1457 current_binding_level
= current_binding_level
->level_chain
;
1459 while (current_binding_level
->parm_flag
== 2);
1462 /* ...and a poplevel for class declarations. FORCE is used to force
1463 clearing out of CLASS_VALUEs after a class definition. */
1466 poplevel_class (force
)
1469 register struct binding_level
*level
= class_binding_level
;
1470 tree block
= NULL_TREE
;
1473 my_friendly_assert (level
!= 0, 354);
1475 decl_stack
= pop_stack_level (decl_stack
);
1476 for (shadowed
= level
->shadowed
; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
1477 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1478 /* If we're leaving a toplevel class, don't bother to do the setting
1479 of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
1480 shouldn't even be used when current_class_type isn't set, and second,
1481 if we don't touch it here, we're able to use the cache effect if the
1482 next time we're entering a class scope, it is the same class. */
1483 if (current_class_depth
!= 1 || force
)
1484 for (shadowed
= level
->class_shadowed
;
1486 shadowed
= TREE_CHAIN (shadowed
))
1487 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1489 /* Remember to save what IDENTIFIER's were bound in this scope so we
1490 can recover from cache misses. */
1492 previous_class_type
= current_class_type
;
1493 previous_class_values
= class_binding_level
->class_shadowed
;
1495 for (shadowed
= level
->type_shadowed
;
1497 shadowed
= TREE_CHAIN (shadowed
))
1498 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed
)) = TREE_VALUE (shadowed
);
1500 GNU_xref_end_scope ((HOST_WIDE_INT
) class_binding_level
,
1501 (HOST_WIDE_INT
) class_binding_level
->level_chain
,
1502 class_binding_level
->parm_flag
,
1503 class_binding_level
->keep
);
1505 if (class_binding_level
->parm_flag
!= 2)
1506 class_binding_level
= (struct binding_level
*)0;
1508 /* Now, pop out of the the binding level which we created up in the
1509 `pushlevel_class' routine. */
1510 #if defined(DEBUG_CP_BINDING_LEVELS)
1512 #endif /* defined(DEBUG_CP_BINDING_LEVELS) */
1514 pop_binding_level ();
1519 /* For debugging. */
1520 static int no_print_functions
= 0;
1521 static int no_print_builtins
= 0;
1524 print_binding_level (lvl
)
1525 struct binding_level
*lvl
;
1529 fprintf (stderr
, " blocks=");
1530 fprintf (stderr
, HOST_PTR_PRINTF
, lvl
->blocks
);
1531 fprintf (stderr
, " n_incomplete=%d parm_flag=%d keep=%d",
1532 list_length (lvl
->incomplete
), lvl
->parm_flag
, lvl
->keep
);
1533 if (lvl
->tag_transparent
)
1534 fprintf (stderr
, " tag-transparent");
1535 if (lvl
->more_cleanups_ok
)
1536 fprintf (stderr
, " more-cleanups-ok");
1537 if (lvl
->have_cleanups
)
1538 fprintf (stderr
, " have-cleanups");
1539 fprintf (stderr
, "\n");
1542 fprintf (stderr
, " names:\t");
1543 /* We can probably fit 3 names to a line? */
1544 for (t
= lvl
->names
; t
; t
= TREE_CHAIN (t
))
1546 if (no_print_functions
&& (TREE_CODE (t
) == FUNCTION_DECL
))
1548 if (no_print_builtins
1549 && (TREE_CODE (t
) == TYPE_DECL
)
1550 && (!strcmp (DECL_SOURCE_FILE (t
),"<built-in>")))
1553 /* Function decls tend to have longer names. */
1554 if (TREE_CODE (t
) == FUNCTION_DECL
)
1561 fprintf (stderr
, "\n\t");
1564 print_node_brief (stderr
, "", t
, 0);
1565 if (t
== error_mark_node
)
1569 fprintf (stderr
, "\n");
1573 fprintf (stderr
, " tags:\t");
1575 for (t
= lvl
->tags
; t
; t
= TREE_CHAIN (t
))
1577 if (TREE_PURPOSE (t
) == NULL_TREE
)
1579 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1586 fprintf (stderr
, "\n\t");
1589 if (TREE_PURPOSE (t
) == NULL_TREE
)
1591 print_node_brief (stderr
, "<unnamed-typedef", TREE_VALUE (t
), 0);
1592 fprintf (stderr
, ">");
1594 else if (TREE_PURPOSE (t
) == TYPE_IDENTIFIER (TREE_VALUE (t
)))
1595 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1598 print_node_brief (stderr
, "<typedef", TREE_PURPOSE (t
), 0);
1599 print_node_brief (stderr
, "", TREE_VALUE (t
), 0);
1600 fprintf (stderr
, ">");
1604 fprintf (stderr
, "\n");
1608 fprintf (stderr
, " shadowed:");
1609 for (t
= lvl
->shadowed
; t
; t
= TREE_CHAIN (t
))
1611 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1613 fprintf (stderr
, "\n");
1615 if (lvl
->class_shadowed
)
1617 fprintf (stderr
, " class-shadowed:");
1618 for (t
= lvl
->class_shadowed
; t
; t
= TREE_CHAIN (t
))
1620 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1622 fprintf (stderr
, "\n");
1624 if (lvl
->type_shadowed
)
1626 fprintf (stderr
, " type-shadowed:");
1627 for (t
= lvl
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
1629 fprintf (stderr
, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t
)));
1631 fprintf (stderr
, "\n");
1636 print_other_binding_stack (stack
)
1637 struct binding_level
*stack
;
1639 struct binding_level
*level
;
1640 for (level
= stack
; level
!= global_binding_level
; level
= level
->level_chain
)
1642 fprintf (stderr
, "binding level ");
1643 fprintf (stderr
, HOST_PTR_PRINTF
, level
);
1644 fprintf (stderr
, "\n");
1645 print_binding_level (level
);
1650 print_binding_stack ()
1652 struct binding_level
*b
;
1653 fprintf (stderr
, "current_binding_level=");
1654 fprintf (stderr
, HOST_PTR_PRINTF
, current_binding_level
);
1655 fprintf (stderr
, "\nclass_binding_level=");
1656 fprintf (stderr
, HOST_PTR_PRINTF
, class_binding_level
);
1657 fprintf (stderr
, "\nglobal_binding_level=");
1658 fprintf (stderr
, HOST_PTR_PRINTF
, global_binding_level
);
1659 fprintf (stderr
, "\n");
1660 if (class_binding_level
)
1662 for (b
= class_binding_level
; b
; b
= b
->level_chain
)
1663 if (b
== current_binding_level
)
1666 b
= class_binding_level
;
1668 b
= current_binding_level
;
1671 b
= current_binding_level
;
1672 print_other_binding_stack (b
);
1673 fprintf (stderr
, "global:\n");
1674 print_binding_level (global_binding_level
);
1677 extern char * first_global_object_name
;
1679 /* Get a unique name for each call to this routine for unnamed namespaces.
1680 Mostly copied from get_file_function_name. */
1685 static int temp_name_counter
= 0;
1689 if (first_global_object_name
)
1690 p
= first_global_object_name
;
1691 else if (main_input_filename
)
1692 p
= main_input_filename
;
1696 #define UNNAMED_NAMESPACE_FORMAT "__%s_%d"
1698 buf
= (char *) alloca (sizeof (UNNAMED_NAMESPACE_FORMAT
) + strlen (p
));
1700 sprintf (buf
, UNNAMED_NAMESPACE_FORMAT
, p
, temp_name_counter
++);
1702 /* Don't need to pull weird characters out of global names. */
1703 if (p
!= first_global_object_name
)
1705 for (p
= buf
+11; *p
; p
++)
1706 if (! ((*p
>= '0' && *p
<= '9')
1707 #ifndef NO_DOLLAR_IN_LABEL /* this for `$'; unlikely, but... -- kr */
1710 #ifndef NO_DOT_IN_LABEL /* this for `.'; unlikely, but... */
1713 || (*p
>= 'A' && *p
<= 'Z')
1714 || (*p
>= 'a' && *p
<= 'z')))
1718 return get_identifier (buf
);
1721 /* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
1722 select a name that is unique to this compilation unit. */
1725 push_namespace (name
)
1731 sorry ("namespace");
1735 extern tree current_namespace
;
1736 tree old_id
= get_namespace_id ();
1742 /* Create a truly ugly name! */
1743 name
= get_unique_name ();
1746 d
= build_lang_decl (NAMESPACE_DECL
, name
, void_type_node
);
1748 /* Mark them as external, so redeclaration_error_message doesn't think
1749 they are duplicates. */
1751 DECL_EXTERNAL (d
) = 1;
1754 if (NAMESPACE_LEVEL (d
) == 0)
1756 /* This is new for this compilation unit. */
1758 declare_namespace_level ();
1759 NAMESPACE_LEVEL (d
) = current_binding_level
;
1762 resume_level (NAMESPACE_LEVEL (d
));
1764 /* This code is just is bit old now... */
1765 current_namespace
= tree_cons (NULL_TREE
, name
, current_namespace
);
1766 buf
= (char *) alloca (4 + (old_id
? IDENTIFIER_LENGTH (old_id
) : 0)
1767 + IDENTIFIER_LENGTH (name
));
1768 sprintf (buf
, "%s%s", old_id
? IDENTIFIER_POINTER (old_id
) : "",
1769 IDENTIFIER_POINTER (name
));
1770 TREE_PURPOSE (current_namespace
) = get_identifier (buf
);
1774 /* Pop from the scope of the current namespace. */
1780 extern tree current_namespace
;
1782 current_namespace
= TREE_CHAIN (current_namespace
);
1784 /* Just in case we get out of sync. */
1785 if (! namespace_bindings_p ())
1788 decls
= current_binding_level
->names
;
1790 /* Clear out the meanings of the local variables of this level. */
1792 for (link
= decls
; link
; link
= TREE_CHAIN (link
))
1794 if (DECL_NAME (link
) != NULL_TREE
)
1796 /* If the ident. was used or addressed via a local extern decl,
1797 don't forget that fact. */
1798 if (DECL_EXTERNAL (link
))
1800 if (TREE_USED (link
))
1801 TREE_USED (DECL_ASSEMBLER_NAME (link
)) = 1;
1802 if (TREE_ADDRESSABLE (link
))
1803 TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (link
)) = 1;
1805 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = NULL_TREE
;
1809 /* Restore all name-meanings of the outer levels
1810 that were shadowed by this level. */
1812 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
1813 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1814 for (link
= current_binding_level
->class_shadowed
;
1815 link
; link
= TREE_CHAIN (link
))
1816 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1817 for (link
= current_binding_level
->type_shadowed
;
1818 link
; link
= TREE_CHAIN (link
))
1819 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
1821 /* suspend a level. */
1822 suspend_binding_level ();
1826 /* Subroutines for reverting temporarily to top-level for instantiation
1827 of templates and such. We actually need to clear out the class- and
1828 local-value slots of all identifiers, so that only the global values
1829 are at all visible. Simply setting current_binding_level to the global
1830 scope isn't enough, because more binding levels may be pushed. */
1831 struct saved_scope
{
1832 struct binding_level
*old_binding_level
;
1834 struct saved_scope
*prev
;
1835 tree class_name
, class_type
, function_decl
;
1836 struct binding_level
*class_bindings
;
1837 tree
*lang_base
, *lang_stack
, lang_name
;
1839 int minimal_parse_mode
;
1840 tree last_function_parms
;
1841 tree template_parms
;
1842 HOST_WIDE_INT processing_template_decl
;
1843 tree previous_class_type
, previous_class_values
;
1845 static struct saved_scope
*current_saved_scope
;
1848 store_bindings (names
, old_bindings
)
1849 tree names
, old_bindings
;
1852 for (t
= names
; t
; t
= TREE_CHAIN (t
))
1854 tree binding
, t1
, id
;
1856 if (TREE_CODE (t
) == TREE_LIST
)
1857 id
= TREE_PURPOSE (t
);
1862 || (!IDENTIFIER_LOCAL_VALUE (id
)
1863 && !IDENTIFIER_CLASS_VALUE (id
)))
1866 for (t1
= old_bindings
; t1
; t1
= TREE_CHAIN (t1
))
1867 if (TREE_VEC_ELT (t1
, 0) == id
)
1870 binding
= make_tree_vec (4);
1873 my_friendly_assert (TREE_CODE (id
) == IDENTIFIER_NODE
, 135);
1874 TREE_VEC_ELT (binding
, 0) = id
;
1875 TREE_VEC_ELT (binding
, 1) = IDENTIFIER_TYPE_VALUE (id
);
1876 TREE_VEC_ELT (binding
, 2) = IDENTIFIER_LOCAL_VALUE (id
);
1877 TREE_VEC_ELT (binding
, 3) = IDENTIFIER_CLASS_VALUE (id
);
1878 IDENTIFIER_LOCAL_VALUE (id
) = NULL_TREE
;
1879 IDENTIFIER_CLASS_VALUE (id
) = NULL_TREE
;
1881 TREE_CHAIN (binding
) = old_bindings
;
1882 old_bindings
= binding
;
1886 return old_bindings
;
1890 maybe_push_to_top_level (pseudo
)
1893 extern int current_lang_stacksize
;
1894 struct saved_scope
*s
1895 = (struct saved_scope
*) xmalloc (sizeof (struct saved_scope
));
1896 struct binding_level
*b
= inner_binding_level
;
1897 tree old_bindings
= NULL_TREE
;
1899 if (current_function_decl
)
1900 push_cp_function_context (NULL_TREE
);
1902 if (previous_class_type
)
1903 old_bindings
= store_bindings (previous_class_values
, old_bindings
);
1905 /* Have to include global_binding_level, because class-level decls
1906 aren't listed anywhere useful. */
1907 for (; b
; b
= b
->level_chain
)
1911 if (b
== global_binding_level
|| (pseudo
&& b
->pseudo_global
))
1914 old_bindings
= store_bindings (b
->names
, old_bindings
);
1915 /* We also need to check class_shadowed to save class-level type
1916 bindings, since pushclass doesn't fill in b->names. */
1917 if (b
->parm_flag
== 2)
1918 old_bindings
= store_bindings (b
->class_shadowed
, old_bindings
);
1920 /* Unwind type-value slots back to top level. */
1921 for (t
= b
->type_shadowed
; t
; t
= TREE_CHAIN (t
))
1922 SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t
), TREE_VALUE (t
));
1925 s
->old_binding_level
= current_binding_level
;
1926 current_binding_level
= b
;
1928 s
->class_name
= current_class_name
;
1929 s
->class_type
= current_class_type
;
1930 s
->function_decl
= current_function_decl
;
1931 s
->class_bindings
= class_binding_level
;
1932 s
->lang_stack
= current_lang_stack
;
1933 s
->lang_base
= current_lang_base
;
1934 s
->lang_stacksize
= current_lang_stacksize
;
1935 s
->lang_name
= current_lang_name
;
1936 s
->minimal_parse_mode
= minimal_parse_mode
;
1937 s
->last_function_parms
= last_function_parms
;
1938 s
->template_parms
= current_template_parms
;
1939 s
->processing_template_decl
= processing_template_decl
;
1940 s
->previous_class_type
= previous_class_type
;
1941 s
->previous_class_values
= previous_class_values
;
1943 current_class_name
= current_class_type
= NULL_TREE
;
1944 current_function_decl
= NULL_TREE
;
1945 class_binding_level
= (struct binding_level
*)0;
1946 current_lang_stacksize
= 10;
1947 current_lang_stack
= current_lang_base
1948 = (tree
*) xmalloc (current_lang_stacksize
* sizeof (tree
));
1949 current_lang_name
= lang_name_cplusplus
;
1950 strict_prototype
= strict_prototypes_lang_cplusplus
;
1951 named_labels
= NULL_TREE
;
1952 minimal_parse_mode
= 0;
1953 previous_class_type
= previous_class_values
= NULL_TREE
;
1956 current_template_parms
= NULL_TREE
;
1957 processing_template_decl
= 0;
1960 s
->prev
= current_saved_scope
;
1961 s
->old_bindings
= old_bindings
;
1962 current_saved_scope
= s
;
1964 push_obstacks (&permanent_obstack
, &permanent_obstack
);
1968 push_to_top_level ()
1970 maybe_push_to_top_level (0);
1974 pop_from_top_level ()
1976 extern int current_lang_stacksize
;
1977 struct saved_scope
*s
= current_saved_scope
;
1980 /* Clear out class-level bindings cache. */
1981 if (previous_class_type
)
1984 previous_class_type
= NULL_TREE
;
1989 current_binding_level
= s
->old_binding_level
;
1990 current_saved_scope
= s
->prev
;
1991 for (t
= s
->old_bindings
; t
; t
= TREE_CHAIN (t
))
1993 tree id
= TREE_VEC_ELT (t
, 0);
1996 IDENTIFIER_TYPE_VALUE (id
) = TREE_VEC_ELT (t
, 1);
1997 IDENTIFIER_LOCAL_VALUE (id
) = TREE_VEC_ELT (t
, 2);
1998 IDENTIFIER_CLASS_VALUE (id
) = TREE_VEC_ELT (t
, 3);
2001 current_class_name
= s
->class_name
;
2002 current_class_type
= s
->class_type
;
2003 current_function_decl
= s
->function_decl
;
2004 class_binding_level
= s
->class_bindings
;
2005 free (current_lang_base
);
2006 current_lang_base
= s
->lang_base
;
2007 current_lang_stack
= s
->lang_stack
;
2008 current_lang_name
= s
->lang_name
;
2009 current_lang_stacksize
= s
->lang_stacksize
;
2010 if (current_lang_name
== lang_name_cplusplus
)
2011 strict_prototype
= strict_prototypes_lang_cplusplus
;
2012 else if (current_lang_name
== lang_name_c
)
2013 strict_prototype
= strict_prototypes_lang_c
;
2014 minimal_parse_mode
= s
->minimal_parse_mode
;
2015 last_function_parms
= s
->last_function_parms
;
2016 current_template_parms
= s
->template_parms
;
2017 processing_template_decl
= s
->processing_template_decl
;
2018 previous_class_type
= s
->previous_class_type
;
2019 previous_class_values
= s
->previous_class_values
;
2023 if (current_function_decl
)
2024 pop_cp_function_context (NULL_TREE
);
2027 /* Push a definition of struct, union or enum tag "name".
2028 into binding_level "b". "type" should be the type node,
2029 We assume that the tag "name" is not already defined.
2031 Note that the definition may really be just a forward reference.
2032 In that case, the TYPE_SIZE will be a NULL_TREE.
2034 C++ gratuitously puts all these tags in the name space. */
2036 /* When setting the IDENTIFIER_TYPE_VALUE field of an identifier ID,
2037 record the shadowed value for this binding contour. TYPE is
2038 the type that ID maps to. */
2041 set_identifier_type_value_with_scope (id
, type
, b
)
2044 struct binding_level
*b
;
2046 if (b
!= global_binding_level
)
2048 tree old_type_value
= IDENTIFIER_TYPE_VALUE (id
);
2050 = tree_cons (id
, old_type_value
, b
->type_shadowed
);
2052 SET_IDENTIFIER_TYPE_VALUE (id
, type
);
2055 /* As set_identifier_type_value_with_scope, but using inner_binding_level. */
2058 set_identifier_type_value (id
, type
)
2062 set_identifier_type_value_with_scope (id
, type
, inner_binding_level
);
2065 /* Pop off extraneous binding levels left over due to syntax errors.
2067 We don't pop past namespaces, as they might be valid. */
2072 #ifdef DEBUG_CP_BINDING_LEVELS
2073 fprintf (stderr
, "XXX entering pop_everything ()\n");
2075 while (! toplevel_bindings_p () && ! pseudo_global_level_p ())
2077 if (class_binding_level
)
2078 pop_nested_class (1);
2082 #ifdef DEBUG_CP_BINDING_LEVELS
2083 fprintf (stderr
, "XXX leaving pop_everything ()\n");
2087 /* Push a tag name NAME for struct/class/union/enum type TYPE.
2088 Normally put into into the inner-most non-tag-transparent scope,
2089 but if GLOBALIZE is true, put it in the inner-most non-class scope.
2090 The latter is needed for implicit declarations. */
2093 pushtag (name
, type
, globalize
)
2097 register struct binding_level
*b
;
2101 b
= inner_binding_level
;
2102 while (b
->tag_transparent
2103 || (globalize
&& b
->parm_flag
== 2))
2106 if (toplevel_bindings_p ())
2107 b
->tags
= perm_tree_cons (name
, type
, b
->tags
);
2109 b
->tags
= saveable_tree_cons (name
, type
, b
->tags
);
2113 context
= type
? TYPE_CONTEXT (type
) : NULL_TREE
;
2114 if (! context
&& ! globalize
)
2115 context
= current_scope ();
2117 c_decl
= TREE_CODE (context
) == FUNCTION_DECL
2118 ? context
: TYPE_MAIN_DECL (context
);
2120 /* Do C++ gratuitous typedefing. */
2121 if (IDENTIFIER_TYPE_VALUE (name
) != type
)
2126 if (b
->parm_flag
!= 2
2127 || TYPE_SIZE (current_class_type
) != NULL_TREE
)
2129 d
= lookup_nested_type (type
, c_decl
);
2134 d
= build_decl (TYPE_DECL
, name
, type
);
2135 SET_DECL_ARTIFICIAL (d
);
2136 set_identifier_type_value_with_scope (name
, type
, b
);
2139 d
= TYPE_MAIN_DECL (d
);
2141 TYPE_NAME (type
) = d
;
2142 DECL_CONTEXT (d
) = context
;
2143 if (! globalize
&& processing_template_decl
&& IS_AGGR_TYPE (type
))
2144 push_template_decl (d
);
2146 if (b
->parm_flag
== 2)
2147 d
= pushdecl_class_level (d
);
2149 d
= pushdecl_with_scope (d
, b
);
2153 /* Make nested declarations go into class-level scope. */
2155 d
= build_decl (TYPE_DECL
, name
, type
);
2156 SET_DECL_ARTIFICIAL (d
);
2157 TYPE_NAME (type
) = d
;
2158 DECL_CONTEXT (d
) = context
;
2159 if (! globalize
&& processing_template_decl
&& IS_AGGR_TYPE (type
))
2160 push_template_decl (d
);
2162 d
= pushdecl_class_level (d
);
2166 if (ANON_AGGRNAME_P (name
))
2167 DECL_IGNORED_P (d
) = 1;
2169 TYPE_CONTEXT (type
) = DECL_CONTEXT (d
);
2170 DECL_ASSEMBLER_NAME (d
) = DECL_NAME (d
);
2171 DECL_ASSEMBLER_NAME (d
)
2172 = get_identifier (build_overload_name (type
, 1, 1));
2175 if (b
->parm_flag
== 2)
2177 TREE_NONLOCAL_FLAG (type
) = 1;
2178 if (TYPE_SIZE (current_class_type
) == NULL_TREE
)
2179 CLASSTYPE_TAGS (current_class_type
) = b
->tags
;
2183 if (TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
)
2184 /* Use the canonical TYPE_DECL for this node. */
2185 TYPE_STUB_DECL (type
) = TYPE_NAME (type
);
2188 /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
2189 will be the tagged type we just added to the current
2190 binding level. This fake NULL-named TYPE_DECL node helps
2191 dwarfout.c to know when it needs to output a
2192 representation of a tagged type, and it also gives us a
2193 convenient place to record the "scope start" address for
2196 tree d
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
2197 TYPE_STUB_DECL (type
) = pushdecl_with_scope (d
, b
);
2201 /* Counter used to create anonymous type names. */
2203 static int anon_cnt
= 0;
2205 /* Return an IDENTIFIER which can be used as a name for
2206 anonymous structs and unions. */
2213 sprintf (buf
, ANON_AGGRNAME_FORMAT
, anon_cnt
++);
2214 return get_identifier (buf
);
2217 /* Clear the TREE_PURPOSE slot of tags which have anonymous typenames.
2218 This keeps dbxout from getting confused. */
2223 register struct binding_level
*b
;
2225 static int last_cnt
= 0;
2227 /* Fast out if no new anon names were declared. */
2228 if (last_cnt
== anon_cnt
)
2231 b
= current_binding_level
;
2232 while (b
->tag_transparent
)
2237 /* A NULL purpose means we have already processed all tags
2238 from here to the end of the list. */
2239 if (TREE_PURPOSE (tags
) == NULL_TREE
)
2241 if (ANON_AGGRNAME_P (TREE_PURPOSE (tags
)))
2242 TREE_PURPOSE (tags
) = NULL_TREE
;
2243 tags
= TREE_CHAIN (tags
);
2245 last_cnt
= anon_cnt
;
2248 /* Subroutine of duplicate_decls: return truthvalue of whether
2249 or not types of these decls match.
2251 For C++, we must compare the parameter list so that `int' can match
2252 `int&' in a parameter position, but `int&' is not confused with
2256 decls_match (newdecl
, olddecl
)
2257 tree newdecl
, olddecl
;
2261 if (TREE_CODE (newdecl
) == FUNCTION_DECL
2262 && TREE_CODE (olddecl
) == FUNCTION_DECL
)
2264 tree f1
= TREE_TYPE (newdecl
);
2265 tree f2
= TREE_TYPE (olddecl
);
2266 tree p1
= TYPE_ARG_TYPES (f1
);
2267 tree p2
= TYPE_ARG_TYPES (f2
);
2269 /* When we parse a static member function definition,
2270 we put together a FUNCTION_DECL which thinks its type
2271 is METHOD_TYPE. Change that to FUNCTION_TYPE, and
2273 if (TREE_CODE (f1
) == METHOD_TYPE
&& DECL_STATIC_FUNCTION_P (olddecl
))
2274 revert_static_member_fn (&newdecl
, &f1
, &p1
);
2275 else if (TREE_CODE (f2
) == METHOD_TYPE
2276 && DECL_STATIC_FUNCTION_P (newdecl
))
2277 revert_static_member_fn (&olddecl
, &f2
, &p2
);
2279 /* Here we must take care of the case where new default
2280 parameters are specified. Also, warn if an old
2281 declaration becomes ambiguous because default
2282 parameters may cause the two to be ambiguous. */
2283 if (TREE_CODE (f1
) != TREE_CODE (f2
))
2285 if (TREE_CODE (f1
) == OFFSET_TYPE
)
2286 cp_compiler_error ("`%D' redeclared as member function", newdecl
);
2288 cp_compiler_error ("`%D' redeclared as non-member function", newdecl
);
2292 if (comptypes (TREE_TYPE (f1
), TREE_TYPE (f2
), 1))
2294 if (! strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
) == lang_c
2297 types_match
= self_promoting_args_p (p1
);
2298 if (p1
== void_list_node
)
2299 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2301 else if (!strict_prototypes_lang_c
&& DECL_LANGUAGE (olddecl
)==lang_c
2302 && DECL_LANGUAGE (newdecl
) == lang_c
&& p1
== NULL_TREE
)
2304 types_match
= self_promoting_args_p (p2
);
2305 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
);
2308 types_match
= compparms (p1
, p2
, 3);
2313 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
2314 && TREE_CODE (olddecl
) == TEMPLATE_DECL
)
2316 tree newargs
= DECL_TEMPLATE_PARMS (newdecl
);
2317 tree oldargs
= DECL_TEMPLATE_PARMS (olddecl
);
2320 /* Run through all the levels of template parmaters, checking
2322 while (newargs
&& oldargs
)
2324 int len
= TREE_VEC_LENGTH (INNERMOST_TEMPLATE_PARMS (newargs
));
2326 if (TREE_VEC_LENGTH (INNERMOST_TEMPLATE_PARMS (oldargs
)) != len
)
2329 for (i
= 0; i
< len
; i
++)
2332 TREE_VALUE (TREE_VEC_ELT
2333 (INNERMOST_TEMPLATE_PARMS (newargs
), i
));
2335 TREE_VALUE (TREE_VEC_ELT
2336 (INNERMOST_TEMPLATE_PARMS (oldargs
), i
));
2337 if (TREE_CODE (newarg
) != TREE_CODE (oldarg
))
2339 else if (TREE_CODE (newarg
) == TYPE_DECL
)
2341 else if (! comptypes (TREE_TYPE (newarg
), TREE_TYPE (oldarg
), 1))
2344 newargs
= TREE_CHAIN (newargs
);
2345 oldargs
= TREE_CHAIN (oldargs
);
2348 if ((newargs
== NULL_TREE
) != (oldargs
== NULL_TREE
))
2349 /* One declaration has more levels that the other. */
2352 if (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2355 types_match
= decls_match (DECL_TEMPLATE_RESULT (olddecl
),
2356 DECL_TEMPLATE_RESULT (newdecl
));
2360 if (TREE_TYPE (newdecl
) == error_mark_node
)
2361 types_match
= TREE_TYPE (olddecl
) == error_mark_node
;
2362 else if (TREE_TYPE (olddecl
) == NULL_TREE
)
2363 types_match
= TREE_TYPE (newdecl
) == NULL_TREE
;
2364 else if (TREE_TYPE (newdecl
) == NULL_TREE
)
2366 /* Qualifiers must match, and they may be present on either, the type
2368 else if ((TREE_READONLY (newdecl
)
2369 || TYPE_READONLY (TREE_TYPE (newdecl
)))
2370 == (TREE_READONLY (olddecl
)
2371 || TYPE_READONLY (TREE_TYPE (olddecl
)))
2372 && (TREE_THIS_VOLATILE (newdecl
)
2373 || TYPE_VOLATILE (TREE_TYPE (newdecl
)))
2374 == (TREE_THIS_VOLATILE (olddecl
)
2375 || TYPE_VOLATILE (TREE_TYPE (olddecl
))))
2376 types_match
= comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (newdecl
)),
2377 TYPE_MAIN_VARIANT (TREE_TYPE (olddecl
)), 1);
2385 /* If NEWDECL is `static' and an `extern' was seen previously,
2386 warn about it. (OLDDECL may be NULL_TREE; NAME contains
2387 information about previous usage as an `extern'.)
2389 Note that this does not apply to the C++ case of declaring
2390 a variable `extern const' and then later `const'.
2392 Don't complain about built-in functions, since they are beyond
2393 the user's control. */
2396 warn_extern_redeclared_static (newdecl
, olddecl
)
2397 tree newdecl
, olddecl
;
2401 static char *explicit_extern_static_warning
2402 = "`%D' was declared `extern' and later `static'";
2403 static char *implicit_extern_static_warning
2404 = "`%D' was declared implicitly `extern' and later `static'";
2406 if (TREE_CODE (newdecl
) == TYPE_DECL
)
2409 name
= DECL_ASSEMBLER_NAME (newdecl
);
2410 if (TREE_PUBLIC (name
) && DECL_THIS_STATIC (newdecl
))
2412 /* It's okay to redeclare an ANSI built-in function as static,
2413 or to declare a non-ANSI built-in function as anything. */
2414 if (! (TREE_CODE (newdecl
) == FUNCTION_DECL
2415 && olddecl
!= NULL_TREE
2416 && TREE_CODE (olddecl
) == FUNCTION_DECL
2417 && (DECL_BUILT_IN (olddecl
)
2418 || DECL_BUILT_IN_NONANSI (olddecl
))))
2420 cp_pedwarn (IDENTIFIER_IMPLICIT_DECL (name
)
2421 ? implicit_extern_static_warning
2422 : explicit_extern_static_warning
, newdecl
);
2423 if (olddecl
!= NULL_TREE
)
2424 cp_pedwarn_at ("previous declaration of `%D'", olddecl
);
2429 /* Handle when a new declaration NEWDECL has the same name as an old
2430 one OLDDECL in the same binding contour. Prints an error message
2433 If safely possible, alter OLDDECL to look like NEWDECL, and return 1.
2434 Otherwise, return 0. */
2437 duplicate_decls (newdecl
, olddecl
)
2438 tree newdecl
, olddecl
;
2440 extern struct obstack permanent_obstack
;
2441 unsigned olddecl_uid
= DECL_UID (olddecl
);
2442 int olddecl_friend
= 0, types_match
= 0;
2443 int new_defines_function
;
2445 if (newdecl
== olddecl
)
2448 if (TREE_CODE_CLASS (TREE_CODE (olddecl
)) == 'd')
2449 DECL_MACHINE_ATTRIBUTES (newdecl
) = DECL_MACHINE_ATTRIBUTES (olddecl
);
2451 types_match
= decls_match (newdecl
, olddecl
);
2453 if (TREE_CODE (olddecl
) != TREE_LIST
)
2454 olddecl_friend
= DECL_LANG_SPECIFIC (olddecl
) && DECL_FRIEND_P (olddecl
);
2456 /* If either the type of the new decl or the type of the old decl is an
2457 error_mark_node, then that implies that we have already issued an
2458 error (earlier) for some bogus type specification, and in that case,
2459 it is rather pointless to harass the user with yet more error message
2460 about the same declaration, so well just pretent the types match here. */
2461 if (TREE_TYPE (newdecl
) == error_mark_node
2462 || TREE_TYPE (olddecl
) == error_mark_node
)
2465 if (TREE_CODE (olddecl
) == FUNCTION_DECL
2466 && DECL_ARTIFICIAL (olddecl
)
2467 && (DECL_BUILT_IN (olddecl
) || DECL_BUILT_IN_NONANSI (olddecl
)))
2469 /* If you declare a built-in or predefined function name as static,
2470 the old definition is overridden, but optionally warn this was a
2471 bad choice of name. Ditto for overloads. */
2472 if (! TREE_PUBLIC (newdecl
)
2473 || (TREE_CODE (newdecl
) == FUNCTION_DECL
2474 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
)))
2477 cp_warning ("shadowing %s function `%#D'",
2478 DECL_BUILT_IN (olddecl
) ? "built-in" : "library",
2480 /* Discard the old built-in function. */
2483 else if (! types_match
)
2485 if (TREE_CODE (newdecl
) != FUNCTION_DECL
)
2487 /* If the built-in is not ansi, then programs can override
2488 it even globally without an error. */
2489 if (! DECL_BUILT_IN (olddecl
))
2490 cp_warning ("library function `%#D' redeclared as non-function `%#D'",
2494 cp_error ("declaration of `%#D'", newdecl
);
2495 cp_error ("conflicts with built-in declaration `%#D'",
2501 cp_warning ("declaration of `%#D'", newdecl
);
2502 cp_warning ("conflicts with built-in declaration `%#D'",
2506 else if (TREE_CODE (olddecl
) != TREE_CODE (newdecl
))
2508 if ((TREE_CODE (newdecl
) == FUNCTION_DECL
2509 && DECL_FUNCTION_TEMPLATE_P (olddecl
))
2510 || (TREE_CODE (olddecl
) == FUNCTION_DECL
2511 && DECL_FUNCTION_TEMPLATE_P (newdecl
)))
2514 cp_error ("`%#D' redeclared as different kind of symbol", newdecl
);
2515 if (TREE_CODE (olddecl
) == TREE_LIST
)
2516 olddecl
= TREE_VALUE (olddecl
);
2517 cp_error_at ("previous declaration of `%#D'", olddecl
);
2519 /* New decl is completely inconsistent with the old one =>
2520 tell caller to replace the old one. */
2524 else if (!types_match
)
2526 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2528 /* The name of a class template may not be declared to refer to
2529 any other template, class, function, object, namespace, value,
2530 or type in the same scope. */
2531 if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == TYPE_DECL
2532 || TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
)
2534 cp_error ("declaration of template `%#D'", newdecl
);
2535 cp_error_at ("conflicts with previous declaration `%#D'",
2538 else if (TREE_CODE (DECL_TEMPLATE_RESULT (olddecl
)) == FUNCTION_DECL
2539 && TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
2540 && compparms (TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (olddecl
))),
2541 TYPE_ARG_TYPES (TREE_TYPE (DECL_TEMPLATE_RESULT (newdecl
))), 3))
2543 cp_error ("new declaration `%#D'", newdecl
);
2544 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2548 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2550 if (DECL_LANGUAGE (newdecl
) == lang_c
2551 && DECL_LANGUAGE (olddecl
) == lang_c
)
2553 cp_error ("declaration of C function `%#D' conflicts with",
2555 cp_error_at ("previous declaration `%#D' here", olddecl
);
2557 else if (compparms (TYPE_ARG_TYPES (TREE_TYPE (newdecl
)),
2558 TYPE_ARG_TYPES (TREE_TYPE (olddecl
)), 3))
2560 cp_error ("new declaration `%#D'", newdecl
);
2561 cp_error_at ("ambiguates old declaration `%#D'", olddecl
);
2567 /* Already complained about this, so don't do so again. */
2568 else if (current_class_type
== NULL_TREE
2569 || IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (newdecl
)) != current_class_type
)
2571 cp_error ("conflicting types for `%#D'", newdecl
);
2572 cp_error_at ("previous declaration as `%#D'", olddecl
);
2575 else if ((TREE_CODE (olddecl
) == FUNCTION_DECL
2576 && DECL_TEMPLATE_SPECIALIZATION (olddecl
)
2577 && (!DECL_TEMPLATE_SPECIALIZATION (newdecl
)
2578 || (DECL_TI_TEMPLATE (newdecl
)
2579 != DECL_TI_TEMPLATE (olddecl
))))
2580 || (TREE_CODE (newdecl
) == FUNCTION_DECL
2581 && DECL_TEMPLATE_SPECIALIZATION (newdecl
)
2582 && (!DECL_TEMPLATE_SPECIALIZATION (olddecl
)
2583 || (DECL_TI_TEMPLATE (olddecl
) != DECL_TI_TEMPLATE
2585 /* It's OK to have a template specialization and a non-template
2586 with the same type, or to have specializations of two
2587 different templates with the same type. */
2591 char *errmsg
= redeclaration_error_message (newdecl
, olddecl
);
2594 cp_error (errmsg
, newdecl
);
2595 if (DECL_NAME (olddecl
) != NULL_TREE
)
2596 cp_error_at ((DECL_INITIAL (olddecl
)
2597 && current_binding_level
== global_binding_level
)
2598 ? "`%#D' previously defined here"
2599 : "`%#D' previously declared here", olddecl
);
2601 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2602 && DECL_INITIAL (olddecl
) != NULL_TREE
2603 && TYPE_ARG_TYPES (TREE_TYPE (olddecl
)) == NULL_TREE
2604 && TYPE_ARG_TYPES (TREE_TYPE (newdecl
)) != NULL_TREE
)
2606 /* Prototype decl follows defn w/o prototype. */
2607 cp_warning_at ("prototype for `%#D'", newdecl
);
2608 cp_warning_at ("follows non-prototype definition here", olddecl
);
2610 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
2611 && DECL_LANGUAGE (newdecl
) != DECL_LANGUAGE (olddecl
))
2613 /* extern "C" int foo ();
2614 int foo () { bar (); }
2616 if (current_lang_stack
== current_lang_base
)
2617 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2620 cp_error_at ("previous declaration of `%#D' with %L linkage",
2621 olddecl
, DECL_LANGUAGE (olddecl
));
2622 cp_error ("conflicts with new declaration with %L linkage",
2623 DECL_LANGUAGE (newdecl
));
2627 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_USE_TEMPLATE (olddecl
))
2629 else if (TREE_CODE (olddecl
) == FUNCTION_DECL
)
2631 tree t1
= TYPE_ARG_TYPES (TREE_TYPE (olddecl
));
2632 tree t2
= TYPE_ARG_TYPES (TREE_TYPE (newdecl
));
2635 if (TREE_CODE (TREE_TYPE (newdecl
)) == METHOD_TYPE
)
2636 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
);
2638 for (; t1
&& t1
!= void_list_node
;
2639 t1
= TREE_CHAIN (t1
), t2
= TREE_CHAIN (t2
), i
++)
2640 if (TREE_PURPOSE (t1
) && TREE_PURPOSE (t2
))
2642 if (1 == simple_cst_equal (TREE_PURPOSE (t1
),
2647 cp_pedwarn ("default argument given for parameter %d of `%#D'",
2649 cp_pedwarn_at ("after previous specification in `%#D'",
2655 cp_error ("default argument given for parameter %d of `%#D'",
2657 cp_error_at ("after previous specification in `%#D'",
2662 if (DECL_THIS_INLINE (newdecl
) && ! DECL_THIS_INLINE (olddecl
)
2663 && TREE_ADDRESSABLE (olddecl
) && warn_inline
)
2665 cp_warning ("`%#D' was used before it was declared inline",
2667 cp_warning_at ("previous non-inline declaration here",
2671 /* These bits are logically part of the type for non-functions. */
2672 else if (TREE_READONLY (newdecl
) != TREE_READONLY (olddecl
)
2673 || TREE_THIS_VOLATILE (newdecl
) != TREE_THIS_VOLATILE (olddecl
))
2675 cp_pedwarn ("type qualifiers for `%#D'", newdecl
);
2676 cp_pedwarn_at ("conflict with previous decl `%#D'", olddecl
);
2680 /* If new decl is `static' and an `extern' was seen previously,
2682 warn_extern_redeclared_static (newdecl
, olddecl
);
2684 /* We have committed to returning 1 at this point. */
2685 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2687 /* Now that functions must hold information normally held
2688 by field decls, there is extra work to do so that
2689 declaration information does not get destroyed during
2691 if (DECL_VINDEX (olddecl
))
2692 DECL_VINDEX (newdecl
) = DECL_VINDEX (olddecl
);
2693 if (DECL_CONTEXT (olddecl
))
2694 DECL_CONTEXT (newdecl
) = DECL_CONTEXT (olddecl
);
2695 if (DECL_CLASS_CONTEXT (olddecl
))
2696 DECL_CLASS_CONTEXT (newdecl
) = DECL_CLASS_CONTEXT (olddecl
);
2697 if (DECL_CHAIN (newdecl
) == NULL_TREE
)
2698 DECL_CHAIN (newdecl
) = DECL_CHAIN (olddecl
);
2699 if (DECL_PENDING_INLINE_INFO (newdecl
) == (struct pending_inline
*)0)
2700 DECL_PENDING_INLINE_INFO (newdecl
) = DECL_PENDING_INLINE_INFO (olddecl
);
2701 DECL_STATIC_CONSTRUCTOR (newdecl
) |= DECL_STATIC_CONSTRUCTOR (olddecl
);
2702 DECL_STATIC_DESTRUCTOR (newdecl
) |= DECL_STATIC_DESTRUCTOR (olddecl
);
2703 DECL_ABSTRACT_VIRTUAL_P (newdecl
) |= DECL_ABSTRACT_VIRTUAL_P (olddecl
);
2706 /* Deal with C++: must preserve virtual function table size. */
2707 if (TREE_CODE (olddecl
) == TYPE_DECL
)
2709 register tree newtype
= TREE_TYPE (newdecl
);
2710 register tree oldtype
= TREE_TYPE (olddecl
);
2712 if (newtype
!= error_mark_node
&& oldtype
!= error_mark_node
2713 && TYPE_LANG_SPECIFIC (newtype
) && TYPE_LANG_SPECIFIC (oldtype
))
2715 CLASSTYPE_VSIZE (newtype
) = CLASSTYPE_VSIZE (oldtype
);
2716 CLASSTYPE_FRIEND_CLASSES (newtype
)
2717 = CLASSTYPE_FRIEND_CLASSES (oldtype
);
2721 /* Special handling ensues if new decl is a function definition. */
2722 new_defines_function
= (TREE_CODE (newdecl
) == FUNCTION_DECL
2723 && DECL_INITIAL (newdecl
) != NULL_TREE
);
2725 /* Optionally warn about more than one declaration for the same name,
2726 but don't warn about a function declaration followed by a definition. */
2727 if (warn_redundant_decls
2728 && ! DECL_ARTIFICIAL (olddecl
)
2729 && !(new_defines_function
&& DECL_INITIAL (olddecl
) == NULL_TREE
)
2730 /* Don't warn about extern decl followed by (tentative) definition. */
2731 && !(DECL_EXTERNAL (olddecl
) && ! DECL_EXTERNAL (newdecl
)))
2733 cp_warning ("redundant redeclaration of `%D' in same scope", newdecl
);
2734 cp_warning_at ("previous declaration of `%D'", olddecl
);
2737 /* Copy all the DECL_... slots specified in the new decl
2738 except for any that we copy here from the old type. */
2740 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2742 if (DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)) == NULL_TREE
)
2744 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
2745 DECL_TEMPLATE_RESULT (olddecl
) = DECL_TEMPLATE_RESULT (newdecl
);
2746 DECL_TEMPLATE_PARMS (olddecl
) = DECL_TEMPLATE_PARMS (newdecl
);
2753 /* Automatically handles default parameters. */
2754 tree oldtype
= TREE_TYPE (olddecl
);
2757 /* Make sure we put the new type in the same obstack as the old one. */
2759 push_obstacks (TYPE_OBSTACK (oldtype
), TYPE_OBSTACK (oldtype
));
2762 push_obstacks_nochange ();
2763 end_temporary_allocation ();
2766 /* Merge the data types specified in the two decls. */
2767 newtype
= common_type (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
));
2769 if (TREE_CODE (newdecl
) == VAR_DECL
)
2770 DECL_THIS_EXTERN (newdecl
) |= DECL_THIS_EXTERN (olddecl
);
2771 /* Do this after calling `common_type' so that default
2772 parameters don't confuse us. */
2773 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
2774 && (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
))
2775 != TYPE_RAISES_EXCEPTIONS (TREE_TYPE (olddecl
))))
2777 TREE_TYPE (newdecl
) = build_exception_variant (newtype
,
2778 TYPE_RAISES_EXCEPTIONS (TREE_TYPE (newdecl
)));
2779 TREE_TYPE (olddecl
) = build_exception_variant (newtype
,
2780 TYPE_RAISES_EXCEPTIONS (oldtype
));
2782 if ((pedantic
|| ! DECL_IN_SYSTEM_HEADER (olddecl
))
2784 && ! compexcepttypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
)))
2786 cp_pedwarn ("declaration of `%D' throws different exceptions",
2788 cp_pedwarn_at ("previous declaration here", olddecl
);
2791 TREE_TYPE (newdecl
) = TREE_TYPE (olddecl
) = newtype
;
2793 /* Lay the type out, unless already done. */
2794 if (oldtype
!= TREE_TYPE (newdecl
)
2795 && TREE_TYPE (newdecl
) != error_mark_node
2796 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
2797 layout_type (TREE_TYPE (newdecl
));
2799 if ((TREE_CODE (newdecl
) == VAR_DECL
2800 || TREE_CODE (newdecl
) == PARM_DECL
2801 || TREE_CODE (newdecl
) == RESULT_DECL
2802 || TREE_CODE (newdecl
) == FIELD_DECL
2803 || TREE_CODE (newdecl
) == TYPE_DECL
)
2804 && !(processing_template_decl
&& uses_template_parms (newdecl
)))
2805 layout_decl (newdecl
, 0);
2807 /* Merge the type qualifiers. */
2808 if (TREE_READONLY (newdecl
))
2809 TREE_READONLY (olddecl
) = 1;
2810 if (TREE_THIS_VOLATILE (newdecl
))
2811 TREE_THIS_VOLATILE (olddecl
) = 1;
2813 /* Merge the initialization information. */
2814 if (DECL_INITIAL (newdecl
) == NULL_TREE
2815 && DECL_INITIAL (olddecl
) != NULL_TREE
)
2817 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
2818 DECL_SOURCE_FILE (newdecl
) = DECL_SOURCE_FILE (olddecl
);
2819 DECL_SOURCE_LINE (newdecl
) = DECL_SOURCE_LINE (olddecl
);
2822 /* Merge the section attribute.
2823 We want to issue an error if the sections conflict but that must be
2824 done later in decl_attributes since we are called before attributes
2826 if (DECL_SECTION_NAME (newdecl
) == NULL_TREE
)
2827 DECL_SECTION_NAME (newdecl
) = DECL_SECTION_NAME (olddecl
);
2829 /* Keep the old rtl since we can safely use it, unless it's the
2830 call to abort() used for abstract virtuals. */
2831 if ((DECL_LANG_SPECIFIC (olddecl
)
2832 && !DECL_ABSTRACT_VIRTUAL_P (olddecl
))
2833 || DECL_RTL (olddecl
) != DECL_RTL (abort_fndecl
))
2834 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
2838 /* If cannot merge, then use the new type and qualifiers,
2839 and don't preserve the old rtl. */
2842 /* Clean out any memory we had of the old declaration. */
2843 tree oldstatic
= value_member (olddecl
, static_aggregates
);
2845 TREE_VALUE (oldstatic
) = error_mark_node
;
2847 TREE_TYPE (olddecl
) = TREE_TYPE (newdecl
);
2848 TREE_READONLY (olddecl
) = TREE_READONLY (newdecl
);
2849 TREE_THIS_VOLATILE (olddecl
) = TREE_THIS_VOLATILE (newdecl
);
2850 TREE_SIDE_EFFECTS (olddecl
) = TREE_SIDE_EFFECTS (newdecl
);
2853 /* Merge the storage class information. */
2854 DECL_WEAK (newdecl
) |= DECL_WEAK (olddecl
);
2855 DECL_ONE_ONLY (newdecl
) |= DECL_ONE_ONLY (olddecl
);
2856 TREE_PUBLIC (newdecl
) = TREE_PUBLIC (olddecl
);
2857 TREE_STATIC (olddecl
) = TREE_STATIC (newdecl
) |= TREE_STATIC (olddecl
);
2858 if (! DECL_EXTERNAL (olddecl
))
2859 DECL_EXTERNAL (newdecl
) = 0;
2861 if (DECL_LANG_SPECIFIC (newdecl
))
2863 DECL_INTERFACE_KNOWN (newdecl
) |= DECL_INTERFACE_KNOWN (olddecl
);
2864 DECL_NOT_REALLY_EXTERN (newdecl
) |= DECL_NOT_REALLY_EXTERN (olddecl
);
2867 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2869 DECL_THIS_INLINE (newdecl
) |= DECL_THIS_INLINE (olddecl
);
2871 /* If either decl says `inline', this fn is inline, unless its
2872 definition was passed already. */
2873 if (DECL_INLINE (newdecl
) && DECL_INITIAL (olddecl
) == NULL_TREE
)
2874 DECL_INLINE (olddecl
) = 1;
2875 DECL_INLINE (newdecl
) = DECL_INLINE (olddecl
);
2879 DECL_LANGUAGE (olddecl
) = DECL_LANGUAGE (newdecl
);
2880 DECL_ASSEMBLER_NAME (olddecl
) = DECL_ASSEMBLER_NAME (newdecl
);
2881 DECL_RTL (olddecl
) = DECL_RTL (newdecl
);
2883 if (! types_match
|| new_defines_function
)
2885 /* These need to be copied so that the names are available. */
2886 DECL_ARGUMENTS (olddecl
) = DECL_ARGUMENTS (newdecl
);
2887 DECL_RESULT (olddecl
) = DECL_RESULT (newdecl
);
2889 if (new_defines_function
)
2890 /* If defining a function declared with other language
2891 linkage, use the previously declared language linkage. */
2892 DECL_LANGUAGE (newdecl
) = DECL_LANGUAGE (olddecl
);
2895 /* If redeclaring a builtin function, and not a definition,
2896 it stays built in. */
2897 if (DECL_BUILT_IN (olddecl
))
2899 DECL_BUILT_IN (newdecl
) = 1;
2900 DECL_FUNCTION_CODE (newdecl
) = DECL_FUNCTION_CODE (olddecl
);
2901 /* If we're keeping the built-in definition, keep the rtl,
2902 regardless of declaration matches. */
2903 DECL_RTL (newdecl
) = DECL_RTL (olddecl
);
2906 DECL_FRAME_SIZE (newdecl
) = DECL_FRAME_SIZE (olddecl
);
2908 DECL_RESULT (newdecl
) = DECL_RESULT (olddecl
);
2909 if ((DECL_SAVED_INSNS (newdecl
) = DECL_SAVED_INSNS (olddecl
)))
2910 /* Previously saved insns go together with
2911 the function's previous definition. */
2912 DECL_INITIAL (newdecl
) = DECL_INITIAL (olddecl
);
2913 /* Don't clear out the arguments if we're redefining a function. */
2914 if (DECL_ARGUMENTS (olddecl
))
2915 DECL_ARGUMENTS (newdecl
) = DECL_ARGUMENTS (olddecl
);
2917 if (DECL_LANG_SPECIFIC (olddecl
))
2918 DECL_MAIN_VARIANT (newdecl
) = DECL_MAIN_VARIANT (olddecl
);
2921 if (TREE_CODE (newdecl
) == NAMESPACE_DECL
)
2923 NAMESPACE_LEVEL (newdecl
) = NAMESPACE_LEVEL (olddecl
);
2926 if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
2928 DECL_TEMPLATE_INSTANTIATIONS (newdecl
)
2929 = DECL_TEMPLATE_INSTANTIATIONS (olddecl
);
2930 if (DECL_CHAIN (newdecl
) == NULL_TREE
)
2931 DECL_CHAIN (newdecl
) = DECL_CHAIN (olddecl
);
2934 /* Now preserve various other info from the definition. */
2935 TREE_ADDRESSABLE (newdecl
) = TREE_ADDRESSABLE (olddecl
);
2936 TREE_ASM_WRITTEN (newdecl
) = TREE_ASM_WRITTEN (olddecl
);
2937 DECL_COMMON (newdecl
) = DECL_COMMON (olddecl
);
2938 DECL_ASSEMBLER_NAME (newdecl
) = DECL_ASSEMBLER_NAME (olddecl
);
2940 /* Don't really know how much of the language-specific
2941 values we should copy from old to new. */
2942 if (DECL_LANG_SPECIFIC (olddecl
))
2944 DECL_IN_AGGR_P (newdecl
) = DECL_IN_AGGR_P (olddecl
);
2945 DECL_ACCESS (newdecl
) = DECL_ACCESS (olddecl
);
2946 DECL_NONCONVERTING_P (newdecl
) = DECL_NONCONVERTING_P (olddecl
);
2947 if (DECL_TEMPLATE_INFO (newdecl
) == NULL_TREE
)
2949 DECL_TEMPLATE_INFO (newdecl
) = DECL_TEMPLATE_INFO (olddecl
);
2950 DECL_USE_TEMPLATE (newdecl
) = DECL_USE_TEMPLATE (olddecl
);
2954 if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
2957 struct lang_decl
*ol
= DECL_LANG_SPECIFIC (olddecl
);
2958 struct lang_decl
*nl
= DECL_LANG_SPECIFIC (newdecl
);
2960 function_size
= sizeof (struct tree_decl
);
2962 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
2963 (char *) olddecl
+ sizeof (struct tree_common
),
2964 function_size
- sizeof (struct tree_common
));
2966 /* Can we safely free the storage used by newdecl? */
2968 #define ROUND(x) ((x + obstack_alignment_mask (&permanent_obstack)) \
2969 & ~ obstack_alignment_mask (&permanent_obstack))
2971 if ((char *)newdecl
+ ROUND (function_size
)
2972 + ROUND (sizeof (struct lang_decl
))
2973 == obstack_next_free (&permanent_obstack
))
2975 DECL_MAIN_VARIANT (newdecl
) = olddecl
;
2976 DECL_LANG_SPECIFIC (olddecl
) = ol
;
2977 bcopy ((char *)nl
, (char *)ol
, sizeof (struct lang_decl
));
2979 obstack_free (&permanent_obstack
, newdecl
);
2981 else if (LANG_DECL_PERMANENT (ol
) && ol
!= nl
)
2983 if (DECL_MAIN_VARIANT (olddecl
) == olddecl
)
2985 /* Save these lang_decls that would otherwise be lost. */
2986 extern tree free_lang_decl_chain
;
2987 tree free_lang_decl
= (tree
) ol
;
2989 if (DECL_LANG_SPECIFIC (olddecl
) == ol
)
2992 TREE_CHAIN (free_lang_decl
) = free_lang_decl_chain
;
2993 free_lang_decl_chain
= free_lang_decl
;
2997 /* Storage leak. */;
3003 bcopy ((char *) newdecl
+ sizeof (struct tree_common
),
3004 (char *) olddecl
+ sizeof (struct tree_common
),
3005 sizeof (struct tree_decl
) - sizeof (struct tree_common
)
3006 + tree_code_length
[(int)TREE_CODE (newdecl
)] * sizeof (char *));
3009 DECL_UID (olddecl
) = olddecl_uid
;
3011 DECL_FRIEND_P (olddecl
) = 1;
3016 /* Record a decl-node X as belonging to the current lexical scope.
3017 Check for errors (such as an incompatible declaration for the same
3018 name already seen in the same scope).
3020 Returns either X or an old decl for the same name.
3021 If an old decl is returned, it may have been smashed
3022 to agree with what X says. */
3029 register tree name
= DECL_ASSEMBLER_NAME (x
);
3030 register struct binding_level
*b
= current_binding_level
;
3032 if (x
!= current_function_decl
3033 /* Don't change DECL_CONTEXT of virtual methods. */
3034 && (TREE_CODE (x
) != FUNCTION_DECL
|| !DECL_VIRTUAL_P (x
))
3035 && ! DECL_CONTEXT (x
))
3036 DECL_CONTEXT (x
) = current_function_decl
;
3037 /* A local declaration for a function doesn't constitute nesting. */
3038 if (TREE_CODE (x
) == FUNCTION_DECL
&& DECL_INITIAL (x
) == 0)
3039 DECL_CONTEXT (x
) = 0;
3041 /* Type are looked up using the DECL_NAME, as that is what the rest of the
3042 compiler wants to use. */
3043 if (TREE_CODE (x
) == TYPE_DECL
|| TREE_CODE (x
) == VAR_DECL
3044 || TREE_CODE (x
) == NAMESPACE_DECL
|| TREE_CODE (x
) == TEMPLATE_TYPE_PARM
)
3045 name
= DECL_NAME (x
);
3050 /* Not needed...see below. */
3054 if (TREE_CODE (name
) == TEMPLATE_ID_EXPR
)
3055 name
= TREE_OPERAND (name
, 0);
3057 t
= lookup_name_current_level (name
);
3058 if (t
== error_mark_node
)
3060 /* error_mark_node is 0 for a while during initialization! */
3062 cp_error_at ("`%#D' used prior to declaration", x
);
3065 else if (t
!= NULL_TREE
)
3068 /* This is turned off until I have time to do it right (bpk). */
3069 /* With the code below that uses it... */
3070 file
= DECL_SOURCE_FILE (t
);
3071 line
= DECL_SOURCE_LINE (t
);
3073 if (TREE_CODE (t
) == PARM_DECL
)
3075 if (DECL_CONTEXT (t
) == NULL_TREE
)
3076 fatal ("parse errors have confused me too much");
3078 /* Check for duplicate params. */
3079 if (duplicate_decls (x
, t
))
3082 else if (((TREE_CODE (x
) == FUNCTION_DECL
&& DECL_LANGUAGE (x
) == lang_c
)
3083 || DECL_FUNCTION_TEMPLATE_P (x
))
3084 && is_overloaded_fn (t
))
3085 /* don't do anything just yet */;
3086 else if (t
== wchar_decl_node
)
3088 if (pedantic
&& ! DECL_IN_SYSTEM_HEADER (x
))
3089 cp_pedwarn ("redeclaration of wchar_t as `%T'", TREE_TYPE (x
));
3091 /* Throw away the redeclaration. */
3094 else if (TREE_CODE (t
) != TREE_CODE (x
))
3096 if ((TREE_CODE (t
) == TYPE_DECL
&& DECL_ARTIFICIAL (t
)
3097 && TREE_CODE (x
) != TYPE_DECL
3098 && ! (TREE_CODE (x
) == TEMPLATE_DECL
3099 && TREE_CODE (DECL_TEMPLATE_RESULT (x
)) == TYPE_DECL
))
3100 || (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3101 && TREE_CODE (t
) != TYPE_DECL
3102 && ! (TREE_CODE (t
) == TEMPLATE_DECL
3103 && (TREE_CODE (DECL_TEMPLATE_RESULT (t
))
3106 /* We do nothing special here, because C++ does such nasty
3107 things with TYPE_DECLs. Instead, just let the TYPE_DECL
3108 get shadowed, and know that if we need to find a TYPE_DECL
3109 for a given name, we can look in the IDENTIFIER_TYPE_VALUE
3110 slot of the identifier. */
3113 else if (duplicate_decls (x
, t
))
3116 else if (duplicate_decls (x
, t
))
3119 /* This is turned off until I have time to do it right (bpk). */
3121 /* Also warn if they did a prototype with `static' on it, but
3122 then later left the `static' off. */
3123 if (! TREE_PUBLIC (name
) && TREE_PUBLIC (x
))
3125 if (DECL_LANG_SPECIFIC (t
) && DECL_FRIEND_P (t
))
3130 cp_warning ("`static' missing from declaration of `%D'",
3132 warning_with_file_and_line (file
, line
,
3133 "previous declaration of `%s'",
3134 decl_as_string (t
, 0));
3137 /* Now fix things so it'll do what they expect. */
3138 if (current_function_decl
)
3139 TREE_PUBLIC (current_function_decl
) = 0;
3141 /* Due to interference in memory reclamation (X may be
3142 obstack-deallocated at this point), we must guard against
3143 one really special case. [jason: This should be handled
3144 by start_function] */
3145 if (current_function_decl
== x
)
3146 current_function_decl
= t
;
3148 if (TREE_CODE (t
) == TYPE_DECL
)
3149 SET_IDENTIFIER_TYPE_VALUE (name
, TREE_TYPE (t
));
3150 else if (TREE_CODE (t
) == FUNCTION_DECL
)
3151 check_default_args (t
);
3157 if (TREE_CODE (x
) == FUNCTION_DECL
&& ! DECL_FUNCTION_MEMBER_P (x
))
3159 t
= push_overloaded_decl (x
, 1);
3160 if (t
!= x
|| DECL_LANGUAGE (x
) == lang_c
)
3163 else if (DECL_FUNCTION_TEMPLATE_P (x
) && DECL_CONTEXT (x
) == NULL_TREE
)
3164 return push_overloaded_decl (x
, 0);
3166 /* If declaring a type as a typedef, and the type has no known
3167 typedef name, install this TYPE_DECL as its typedef name. */
3168 if (TREE_CODE (x
) == TYPE_DECL
)
3170 tree type
= TREE_TYPE (x
);
3171 tree name
= (type
!= error_mark_node
) ? TYPE_NAME (type
) : x
;
3173 if (name
== NULL_TREE
|| TREE_CODE (name
) != TYPE_DECL
)
3175 /* If these are different names, and we're at the global
3176 binding level, make two equivalent definitions. */
3178 if (global_bindings_p ())
3179 TYPE_NAME (type
) = x
;
3181 my_friendly_assert (TREE_CODE (name
) == TYPE_DECL
, 140);
3183 if (type
!= error_mark_node
3185 && TYPE_IDENTIFIER (type
))
3186 set_identifier_type_value_with_scope (DECL_NAME (x
), type
, b
);
3189 /* Multiple external decls of the same identifier ought to match.
3191 We get warnings about inline functions where they are defined.
3192 We get warnings about other functions from push_overloaded_decl.
3194 Avoid duplicate warnings where they are used. */
3195 if (TREE_PUBLIC (x
) && TREE_CODE (x
) != FUNCTION_DECL
)
3199 if (IDENTIFIER_GLOBAL_VALUE (name
) != NULL_TREE
3200 && (DECL_EXTERNAL (IDENTIFIER_GLOBAL_VALUE (name
))
3201 || TREE_PUBLIC (IDENTIFIER_GLOBAL_VALUE (name
))))
3202 decl
= IDENTIFIER_GLOBAL_VALUE (name
);
3207 /* If different sort of thing, we already gave an error. */
3208 && TREE_CODE (decl
) == TREE_CODE (x
)
3209 && ! comptypes (TREE_TYPE (x
), TREE_TYPE (decl
), 1))
3211 cp_pedwarn ("type mismatch with previous external decl", x
);
3212 cp_pedwarn_at ("previous external decl of `%#D'", decl
);
3216 /* This name is new in its binding level.
3217 Install the new declaration and return it. */
3218 if (b
== global_binding_level
)
3220 /* Install a global value. */
3222 /* If the first global decl has external linkage,
3223 warn if we later see static one. */
3224 if (IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
&& TREE_PUBLIC (x
))
3225 TREE_PUBLIC (name
) = 1;
3227 /* Don't install an artificial TYPE_DECL if we already have
3228 another _DECL with that name. */
3229 if (TREE_CODE (x
) != TYPE_DECL
3231 || ! DECL_ARTIFICIAL (x
))
3232 IDENTIFIER_GLOBAL_VALUE (name
) = x
;
3234 /* Don't forget if the function was used via an implicit decl. */
3235 if (IDENTIFIER_IMPLICIT_DECL (name
)
3236 && TREE_USED (IDENTIFIER_IMPLICIT_DECL (name
)))
3239 /* Don't forget if its address was taken in that way. */
3240 if (IDENTIFIER_IMPLICIT_DECL (name
)
3241 && TREE_ADDRESSABLE (IDENTIFIER_IMPLICIT_DECL (name
)))
3242 TREE_ADDRESSABLE (x
) = 1;
3244 /* Warn about mismatches against previous implicit decl. */
3245 if (IDENTIFIER_IMPLICIT_DECL (name
) != NULL_TREE
3246 /* If this real decl matches the implicit, don't complain. */
3247 && ! (TREE_CODE (x
) == FUNCTION_DECL
3248 && TREE_TYPE (TREE_TYPE (x
)) == integer_type_node
))
3250 ("`%D' was previously implicitly declared to return `int'", x
);
3252 /* If new decl is `static' and an `extern' was seen previously,
3254 if (x
!= NULL_TREE
&& t
!= NULL_TREE
&& decls_match (x
, t
))
3255 warn_extern_redeclared_static (x
, t
);
3259 /* Here to install a non-global value. */
3260 tree oldlocal
= IDENTIFIER_LOCAL_VALUE (name
);
3261 tree oldglobal
= IDENTIFIER_GLOBAL_VALUE (name
);
3263 /* Don't install an artificial TYPE_DECL if we already have
3264 another _DECL with that name. */
3265 if (TREE_CODE (x
) != TYPE_DECL
3267 || ! DECL_ARTIFICIAL (x
))
3269 b
->shadowed
= tree_cons (name
, oldlocal
, b
->shadowed
);
3270 IDENTIFIER_LOCAL_VALUE (name
) = x
;
3273 /* If this is a TYPE_DECL, push it into the type value slot. */
3274 if (TREE_CODE (x
) == TYPE_DECL
)
3275 set_identifier_type_value_with_scope (name
, TREE_TYPE (x
), b
);
3277 /* Clear out any TYPE_DECL shadowed by a namespace so that
3278 we won't think this is a type. The C struct hack doesn't
3279 go through namespaces. */
3280 if (TREE_CODE (x
) == NAMESPACE_DECL
)
3281 set_identifier_type_value_with_scope (name
, NULL_TREE
, b
);
3283 /* If this is an extern function declaration, see if we
3284 have a global definition or declaration for the function. */
3285 if (oldlocal
== NULL_TREE
3286 && DECL_EXTERNAL (x
)
3287 && oldglobal
!= NULL_TREE
3288 && TREE_CODE (x
) == FUNCTION_DECL
3289 && TREE_CODE (oldglobal
) == FUNCTION_DECL
)
3291 /* We have one. Their types must agree. */
3292 if (decls_match (x
, oldglobal
))
3296 cp_warning ("extern declaration of `%#D' doesn't match", x
);
3297 cp_warning_at ("global declaration `%#D'", oldglobal
);
3300 /* If we have a local external declaration,
3301 and no file-scope declaration has yet been seen,
3302 then if we later have a file-scope decl it must not be static. */
3303 if (oldlocal
== NULL_TREE
3304 && oldglobal
== NULL_TREE
3305 && DECL_EXTERNAL (x
)
3308 TREE_PUBLIC (name
) = 1;
3311 if (DECL_FROM_INLINE (x
))
3312 /* Inline decls shadow nothing. */;
3314 /* Warn if shadowing an argument at the top level of the body. */
3315 else if (oldlocal
!= NULL_TREE
&& !DECL_EXTERNAL (x
)
3316 && TREE_CODE (oldlocal
) == PARM_DECL
3317 && TREE_CODE (x
) != PARM_DECL
)
3319 /* Go to where the parms should be and see if we
3321 struct binding_level
*b
= current_binding_level
->level_chain
;
3327 if (b
->parm_flag
== 1)
3328 cp_error ("declaration of `%#D' shadows a parameter", name
);
3330 else if (warn_shadow
&& oldlocal
!= NULL_TREE
&& b
->is_for_scope
3331 && !DECL_DEAD_FOR_LOCAL (oldlocal
))
3333 warning ("variable `%s' shadows local",
3334 IDENTIFIER_POINTER (name
));
3335 cp_warning_at (" this is the shadowed declaration", oldlocal
);
3337 /* Maybe warn if shadowing something else. */
3338 else if (warn_shadow
&& !DECL_EXTERNAL (x
)
3339 /* No shadow warnings for internally generated vars. */
3340 && ! DECL_ARTIFICIAL (x
)
3341 /* No shadow warnings for vars made for inlining. */
3342 && ! DECL_FROM_INLINE (x
))
3344 char *warnstring
= NULL
;
3346 if (oldlocal
!= NULL_TREE
&& TREE_CODE (oldlocal
) == PARM_DECL
)
3347 warnstring
= "declaration of `%s' shadows a parameter";
3348 else if (IDENTIFIER_CLASS_VALUE (name
) != NULL_TREE
3349 && current_class_ptr
3350 && !TREE_STATIC (name
))
3351 warnstring
= "declaration of `%s' shadows a member of `this'";
3352 else if (oldlocal
!= NULL_TREE
)
3353 warnstring
= "declaration of `%s' shadows previous local";
3354 else if (oldglobal
!= NULL_TREE
)
3355 warnstring
= "declaration of `%s' shadows global declaration";
3358 warning (warnstring
, IDENTIFIER_POINTER (name
));
3362 if (TREE_CODE (x
) == FUNCTION_DECL
)
3363 check_default_args (x
);
3365 /* Keep count of variables in this level with incomplete type. */
3366 if (TREE_CODE (x
) == VAR_DECL
3367 && TREE_TYPE (x
) != error_mark_node
3368 && ((TYPE_SIZE (TREE_TYPE (x
)) == NULL_TREE
3369 && PROMOTES_TO_AGGR_TYPE (TREE_TYPE (x
), ARRAY_TYPE
))
3370 /* RTTI TD entries are created while defining the type_info. */
3371 || (TYPE_LANG_SPECIFIC (TREE_TYPE (x
))
3372 && TYPE_BEING_DEFINED (TREE_TYPE (x
)))))
3373 b
->incomplete
= tree_cons (NULL_TREE
, x
, b
->incomplete
);
3376 /* Put decls on list in reverse order.
3377 We will reverse them later if necessary. */
3378 TREE_CHAIN (x
) = b
->names
;
3380 if (! (b
!= global_binding_level
|| TREE_PERMANENT (x
)))
3381 my_friendly_abort (124);
3386 /* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
3387 caller to set DECL_CONTEXT properly. */
3390 pushdecl_with_scope (x
, level
)
3392 struct binding_level
*level
;
3394 register struct binding_level
*b
= current_binding_level
;
3395 tree function_decl
= current_function_decl
;
3397 current_function_decl
= NULL_TREE
;
3398 current_binding_level
= level
;
3400 current_binding_level
= b
;
3401 current_function_decl
= function_decl
;
3405 /* Like pushdecl, only it places X in GLOBAL_BINDING_LEVEL,
3409 pushdecl_top_level (x
)
3412 register struct binding_level
*b
= inner_binding_level
;
3413 register tree t
= pushdecl_with_scope (x
, global_binding_level
);
3415 /* Now, the type_shadowed stack may screw us. Munge it so it does
3417 if (TREE_CODE (x
) == TYPE_DECL
)
3419 tree name
= DECL_NAME (x
);
3421 tree
*ptr
= (tree
*)0;
3422 for (; b
!= global_binding_level
; b
= b
->level_chain
)
3424 tree shadowed
= b
->type_shadowed
;
3425 for (; shadowed
; shadowed
= TREE_CHAIN (shadowed
))
3426 if (TREE_PURPOSE (shadowed
) == name
)
3428 ptr
= &TREE_VALUE (shadowed
);
3429 /* Can't break out of the loop here because sometimes
3430 a binding level will have duplicate bindings for
3431 PT names. It's gross, but I haven't time to fix it. */
3434 newval
= TREE_TYPE (x
);
3435 if (ptr
== (tree
*)0)
3437 /* @@ This shouldn't be needed. My test case "zstring.cc" trips
3438 up here if this is changed to an assertion. --KR */
3439 SET_IDENTIFIER_TYPE_VALUE (name
, newval
);
3449 /* Like push_overloaded_decl, only it places X in GLOBAL_BINDING_LEVEL,
3453 push_overloaded_decl_top_level (x
, forget
)
3457 struct binding_level
*b
= current_binding_level
;
3459 current_binding_level
= global_binding_level
;
3460 push_overloaded_decl (x
, forget
);
3461 current_binding_level
= b
;
3464 /* Make the declaration of X appear in CLASS scope. */
3467 pushdecl_class_level (x
)
3470 /* Don't use DECL_ASSEMBLER_NAME here! Everything that looks in class
3471 scope looks for the pre-mangled name. */
3472 register tree name
= DECL_NAME (x
);
3476 if (TYPE_BEING_DEFINED (current_class_type
))
3478 /* Check for inconsistent use of this name in the class body.
3479 Types, enums, and static vars are checked here; other
3480 members are checked in finish_struct. */
3481 tree icv
= IDENTIFIER_CLASS_VALUE (name
);
3484 /* Don't complain about inherited names. */
3485 && id_in_current_class (name
)
3486 /* Or shadowed tags. */
3487 && !(TREE_CODE (icv
) == TYPE_DECL
3488 && DECL_CONTEXT (icv
) == current_class_type
))
3490 cp_error ("declaration of identifier `%D' as `%#D'", name
, x
);
3491 cp_error_at ("conflicts with previous use in class as `%#D'",
3496 push_class_level_binding (name
, x
);
3497 if (TREE_CODE (x
) == TYPE_DECL
)
3499 set_identifier_type_value (name
, TREE_TYPE (x
));
3506 /* This function is used to push the mangled decls for nested types into
3507 the appropriate scope. Previously pushdecl_top_level was used, but that
3508 is incorrect for members of local classes. */
3511 pushdecl_nonclass_level (x
)
3514 struct binding_level
*b
= current_binding_level
;
3516 my_friendly_assert (b
->parm_flag
!= 2, 180);
3519 /* Get out of template binding levels */
3520 while (b
->pseudo_global
)
3524 pushdecl_with_scope (x
, b
);
3528 /* Make the declaration(s) of X appear in CLASS scope
3529 under the name NAME. */
3532 push_class_level_binding (name
, x
)
3536 /* The class_binding_level will be NULL if x is a template
3537 parameter name in a member template. */
3538 if (!class_binding_level
)
3541 if (TREE_CODE (x
) == TYPE_DECL
&& DECL_ARTIFICIAL (x
)
3542 && purpose_member (name
, class_binding_level
->class_shadowed
))
3545 maybe_push_cache_obstack ();
3546 class_binding_level
->class_shadowed
3547 = tree_cons (name
, IDENTIFIER_CLASS_VALUE (name
),
3548 class_binding_level
->class_shadowed
);
3550 IDENTIFIER_CLASS_VALUE (name
) = x
;
3551 obstack_ptr_grow (&decl_obstack
, x
);
3554 /* Tell caller how to interpret a TREE_LIST which contains
3555 chains of FUNCTION_DECLS. */
3558 overloaded_globals_p (list
)
3561 my_friendly_assert (TREE_CODE (list
) == TREE_LIST
, 142);
3563 /* Don't commit caller to seeing them as globals. */
3564 if (TREE_NONLOCAL_FLAG (list
))
3566 /* Do commit caller to not seeing them as globals. */
3567 if (TREE_CODE (TREE_VALUE (list
)) == TREE_LIST
)
3569 /* Do commit caller to seeing them as globals. */
3573 /* DECL is a FUNCTION_DECL which may have other definitions already in
3574 place. We get around this by making the value of the identifier point
3575 to a list of all the things that want to be referenced by that name. It
3576 is then up to the users of that name to decide what to do with that
3579 DECL may also be a TEMPLATE_DECL, with a FUNCTION_DECL in its DECL_RESULT
3580 slot. It is dealt with the same way.
3582 The value returned may be a previous declaration if we guessed wrong
3583 about what language DECL should belong to (C or C++). Otherwise,
3584 it's always DECL (and never something that's not a _DECL). */
3587 push_overloaded_decl (decl
, forgettable
)
3591 tree orig_name
= DECL_NAME (decl
);
3593 int doing_global
= (global_bindings_p () || ! forgettable
);
3597 old
= IDENTIFIER_GLOBAL_VALUE (orig_name
);
3598 if (old
&& TREE_CODE (old
) == FUNCTION_DECL
3599 && DECL_ARTIFICIAL (old
)
3600 && (DECL_BUILT_IN (old
) || DECL_BUILT_IN_NONANSI (old
)))
3602 if (duplicate_decls (decl
, old
))
3609 old
= IDENTIFIER_LOCAL_VALUE (orig_name
);
3611 if (! purpose_member (orig_name
, current_binding_level
->shadowed
))
3613 current_binding_level
->shadowed
3614 = tree_cons (orig_name
, old
, current_binding_level
->shadowed
);
3621 if (TREE_CODE (old
) == TYPE_DECL
&& DECL_ARTIFICIAL (old
))
3623 tree t
= TREE_TYPE (old
);
3624 if (IS_AGGR_TYPE (t
) && warn_shadow
3625 && (! DECL_IN_SYSTEM_HEADER (decl
)
3626 || ! DECL_IN_SYSTEM_HEADER (old
)))
3627 cp_warning ("`%#D' hides constructor for `%#T'", decl
, t
);
3630 else if (is_overloaded_fn (old
))
3634 for (tmp
= get_first_fn (old
); tmp
; tmp
= DECL_CHAIN (tmp
))
3635 if (decl
== tmp
|| duplicate_decls (decl
, tmp
))
3640 cp_error_at ("previous non-function declaration `%#D'", old
);
3641 cp_error ("conflicts with function declaration `%#D'", decl
);
3646 if (old
|| TREE_CODE (decl
) == TEMPLATE_DECL
)
3648 if (old
&& is_overloaded_fn (old
))
3649 DECL_CHAIN (decl
) = get_first_fn (old
);
3651 DECL_CHAIN (decl
) = NULL_TREE
;
3652 old
= tree_cons (orig_name
, decl
, NULL_TREE
);
3653 TREE_TYPE (old
) = unknown_type_node
;
3656 /* orig_name is not ambiguous. */
3660 IDENTIFIER_GLOBAL_VALUE (orig_name
) = old
;
3662 IDENTIFIER_LOCAL_VALUE (orig_name
) = old
;
3667 /* Generate an implicit declaration for identifier FUNCTIONID
3668 as a function of type int (). Print a warning if appropriate. */
3671 implicitly_declare (functionid
)
3675 int temp
= allocation_temporary_p ();
3677 push_obstacks_nochange ();
3679 /* Save the decl permanently so we can warn if definition follows.
3680 In ANSI C, warn_implicit is usually false, so the saves little space.
3681 But in C++, it's usually true, hence the extra code. */
3682 if (temp
&& (! warn_implicit
|| toplevel_bindings_p ()))
3683 end_temporary_allocation ();
3685 /* We used to reuse an old implicit decl here,
3686 but this loses with inline functions because it can clobber
3687 the saved decl chains. */
3688 decl
= build_lang_decl (FUNCTION_DECL
, functionid
, default_function_type
);
3690 DECL_EXTERNAL (decl
) = 1;
3691 TREE_PUBLIC (decl
) = 1;
3693 /* ANSI standard says implicit declarations are in the innermost block.
3694 So we record the decl in the standard fashion. */
3696 rest_of_decl_compilation (decl
, NULL_PTR
, 0, 0);
3699 /* Only one warning per identifier. */
3700 && IDENTIFIER_IMPLICIT_DECL (functionid
) == NULL_TREE
)
3702 cp_pedwarn ("implicit declaration of function `%#D'", decl
);
3705 SET_IDENTIFIER_IMPLICIT_DECL (functionid
, decl
);
3712 /* Return zero if the declaration NEWDECL is valid
3713 when the declaration OLDDECL (assumed to be for the same name)
3714 has already been seen.
3715 Otherwise return an error message format string with a %s
3716 where the identifier should go. */
3719 redeclaration_error_message (newdecl
, olddecl
)
3720 tree newdecl
, olddecl
;
3722 if (TREE_CODE (newdecl
) == TYPE_DECL
)
3724 /* Because C++ can put things into name space for free,
3725 constructs like "typedef struct foo { ... } foo"
3726 would look like an erroneous redeclaration. */
3727 if (comptypes (TREE_TYPE (newdecl
), TREE_TYPE (olddecl
), 0))
3730 return "redefinition of `%#D'";
3732 else if (TREE_CODE (newdecl
) == FUNCTION_DECL
)
3734 /* If this is a pure function, its olddecl will actually be
3735 the original initialization to `0' (which we force to call
3736 abort()). Don't complain about redefinition in this case. */
3737 if (DECL_LANG_SPECIFIC (olddecl
) && DECL_ABSTRACT_VIRTUAL_P (olddecl
))
3740 /* We'll complain about linkage mismatches in
3741 warn_extern_redeclared_static. */
3743 /* defining the same name twice is no good. */
3744 if (DECL_INITIAL (olddecl
) != NULL_TREE
3745 && DECL_INITIAL (newdecl
) != NULL_TREE
)
3747 if (DECL_NAME (olddecl
) == NULL_TREE
)
3748 return "`%#D' not declared in class";
3750 return "redefinition of `%#D'";
3754 else if (TREE_CODE (newdecl
) == TEMPLATE_DECL
)
3756 if ((TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == FUNCTION_DECL
3757 && DECL_INITIAL (DECL_TEMPLATE_RESULT (newdecl
))
3758 && DECL_INITIAL (DECL_TEMPLATE_RESULT (olddecl
)))
3759 || (TREE_CODE (DECL_TEMPLATE_RESULT (newdecl
)) == TYPE_DECL
3760 && TYPE_SIZE (TREE_TYPE (newdecl
))
3761 && TYPE_SIZE (TREE_TYPE (olddecl
))))
3762 return "redefinition of `%#D'";
3765 else if (toplevel_bindings_p ())
3767 /* Objects declared at top level: */
3768 /* If at least one is a reference, it's ok. */
3769 if (DECL_EXTERNAL (newdecl
) || DECL_EXTERNAL (olddecl
))
3771 /* Reject two definitions. */
3772 return "redefinition of `%#D'";
3776 /* Objects declared with block scope: */
3777 /* Reject two definitions, and reject a definition
3778 together with an external reference. */
3779 if (!(DECL_EXTERNAL (newdecl
) && DECL_EXTERNAL (olddecl
)))
3780 return "redeclaration of `%#D'";
3785 /* Get the LABEL_DECL corresponding to identifier ID as a label.
3786 Create one if none exists so far for the current function.
3787 This function is called for both label definitions and label references. */
3793 register tree decl
= IDENTIFIER_LABEL_VALUE (id
);
3795 if (current_function_decl
== NULL_TREE
)
3797 error ("label `%s' referenced outside of any function",
3798 IDENTIFIER_POINTER (id
));
3802 if ((decl
== NULL_TREE
3803 || DECL_SOURCE_LINE (decl
) == 0)
3804 && (named_label_uses
== NULL
3805 || named_label_uses
->names_in_scope
!= current_binding_level
->names
3806 || named_label_uses
->label_decl
!= decl
))
3808 struct named_label_list
*new_ent
;
3810 = (struct named_label_list
*)oballoc (sizeof (struct named_label_list
));
3811 new_ent
->label_decl
= decl
;
3812 new_ent
->names_in_scope
= current_binding_level
->names
;
3813 new_ent
->binding_level
= current_binding_level
;
3814 new_ent
->lineno_o_goto
= lineno
;
3815 new_ent
->filename_o_goto
= input_filename
;
3816 new_ent
->next
= named_label_uses
;
3817 named_label_uses
= new_ent
;
3820 /* Use a label already defined or ref'd with this name. */
3821 if (decl
!= NULL_TREE
)
3823 /* But not if it is inherited and wasn't declared to be inheritable. */
3824 if (DECL_CONTEXT (decl
) != current_function_decl
3825 && ! C_DECLARED_LABEL_FLAG (decl
))
3826 return shadow_label (id
);
3830 decl
= build_decl (LABEL_DECL
, id
, void_type_node
);
3832 /* Make sure every label has an rtx. */
3835 /* A label not explicitly declared must be local to where it's ref'd. */
3836 DECL_CONTEXT (decl
) = current_function_decl
;
3838 DECL_MODE (decl
) = VOIDmode
;
3840 /* Say where one reference is to the label,
3841 for the sake of the error if it is not defined. */
3842 DECL_SOURCE_LINE (decl
) = lineno
;
3843 DECL_SOURCE_FILE (decl
) = input_filename
;
3845 SET_IDENTIFIER_LABEL_VALUE (id
, decl
);
3847 named_labels
= tree_cons (NULL_TREE
, decl
, named_labels
);
3848 named_label_uses
->label_decl
= decl
;
3853 /* Make a label named NAME in the current function,
3854 shadowing silently any that may be inherited from containing functions
3855 or containing scopes.
3857 Note that valid use, if the label being shadowed
3858 comes from another scope in the same function,
3859 requires calling declare_nonlocal_label right away. */
3865 register tree decl
= IDENTIFIER_LABEL_VALUE (name
);
3867 if (decl
!= NULL_TREE
)
3869 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
3870 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
3871 SET_IDENTIFIER_LABEL_VALUE (decl
, NULL_TREE
);
3874 return lookup_label (name
);
3877 /* Define a label, specifying the location in the source file.
3878 Return the LABEL_DECL node for the label, if the definition is valid.
3879 Otherwise return 0. */
3882 define_label (filename
, line
, name
)
3889 if (minimal_parse_mode
)
3891 push_obstacks (&permanent_obstack
, &permanent_obstack
);
3892 decl
= build_decl (LABEL_DECL
, name
, void_type_node
);
3894 DECL_SOURCE_LINE (decl
) = line
;
3895 DECL_SOURCE_FILE (decl
) = filename
;
3900 decl
= lookup_label (name
);
3902 /* After labels, make any new cleanups go into their
3903 own new (temporary) binding contour. */
3904 current_binding_level
->more_cleanups_ok
= 0;
3906 /* If label with this name is known from an outer context, shadow it. */
3907 if (decl
!= NULL_TREE
&& DECL_CONTEXT (decl
) != current_function_decl
)
3909 shadowed_labels
= tree_cons (NULL_TREE
, decl
, shadowed_labels
);
3910 SET_IDENTIFIER_LABEL_VALUE (name
, NULL_TREE
);
3911 decl
= lookup_label (name
);
3914 if (name
== get_identifier ("wchar_t"))
3915 cp_pedwarn ("label named wchar_t");
3917 if (DECL_INITIAL (decl
) != NULL_TREE
)
3919 cp_error ("duplicate label `%D'", decl
);
3924 struct named_label_list
*uses
, *prev
;
3927 /* Mark label as having been defined. */
3928 DECL_INITIAL (decl
) = error_mark_node
;
3929 /* Say where in the source. */
3930 DECL_SOURCE_FILE (decl
) = filename
;
3931 DECL_SOURCE_LINE (decl
) = line
;
3934 uses
= named_label_uses
;
3935 while (uses
!= NULL
)
3936 if (uses
->label_decl
== decl
)
3938 struct binding_level
*b
= current_binding_level
;
3941 tree new_decls
= b
->names
;
3942 tree old_decls
= (b
== uses
->binding_level
)
3943 ? uses
->names_in_scope
: NULL_TREE
;
3944 while (new_decls
!= old_decls
)
3946 if (TREE_CODE (new_decls
) == VAR_DECL
3947 /* Don't complain about crossing initialization
3948 of internal entities. They can't be accessed,
3949 and they should be cleaned up
3950 by the time we get to the label. */
3951 && ! DECL_ARTIFICIAL (new_decls
)
3952 && ((DECL_INITIAL (new_decls
) != NULL_TREE
3953 && DECL_INITIAL (new_decls
) != error_mark_node
)
3954 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
3958 cp_error ("jump to label `%D'", decl
);
3959 error_with_file_and_line (uses
->filename_o_goto
,
3960 uses
->lineno_o_goto
,
3964 cp_error_at (" crosses initialization of `%#D'",
3967 new_decls
= TREE_CHAIN (new_decls
);
3969 if (b
== uses
->binding_level
)
3975 prev
->next
= uses
->next
;
3977 named_label_uses
= uses
->next
;
3986 current_function_return_value
= NULL_TREE
;
3993 struct binding_level
*level
;
3994 struct cp_switch
*next
;
3997 static struct cp_switch
*switch_stack
;
4003 = (struct cp_switch
*) oballoc (sizeof (struct cp_switch
));
4004 p
->level
= current_binding_level
;
4005 p
->next
= switch_stack
;
4012 switch_stack
= switch_stack
->next
;
4015 /* Same, but for CASE labels. If DECL is NULL_TREE, it's the default. */
4016 /* XXX Note decl is never actually used. (bpk) */
4019 define_case_label (decl
)
4022 tree cleanup
= last_cleanup_this_contour ();
4023 struct binding_level
*b
= current_binding_level
;
4028 static int explained
= 0;
4029 cp_warning_at ("destructor needed for `%#D'", TREE_PURPOSE (cleanup
));
4030 warning ("where case label appears here");
4033 warning ("(enclose actions of previous case statements requiring");
4034 warning ("destructors in their own binding contours.)");
4039 for (; b
&& b
!= switch_stack
->level
; b
= b
->level_chain
)
4041 tree new_decls
= b
->names
;
4042 for (; new_decls
; new_decls
= TREE_CHAIN (new_decls
))
4044 if (TREE_CODE (new_decls
) == VAR_DECL
4045 /* Don't complain about crossing initialization
4046 of internal entities. They can't be accessed,
4047 and they should be cleaned up
4048 by the time we get to the label. */
4049 && ! DECL_ARTIFICIAL (new_decls
)
4050 && ((DECL_INITIAL (new_decls
) != NULL_TREE
4051 && DECL_INITIAL (new_decls
) != error_mark_node
)
4052 || TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (new_decls
))))
4055 error ("jump to case label");
4057 cp_error_at (" crosses initialization of `%#D'",
4063 /* After labels, make any new cleanups go into their
4064 own new (temporary) binding contour. */
4066 current_binding_level
->more_cleanups_ok
= 0;
4067 current_function_return_value
= NULL_TREE
;
4070 /* Return the list of declarations of the current level.
4071 Note that this list is in reverse order unless/until
4072 you nreverse it; and when you do nreverse it, you must
4073 store the result back using `storedecls' or you will lose. */
4078 return current_binding_level
->names
;
4081 /* Return the list of type-tags (for structs, etc) of the current level. */
4086 return current_binding_level
->tags
;
4089 /* Store the list of declarations of the current level.
4090 This is done for the parameter declarations of a function being defined,
4091 after they are modified in the light of any missing parameters. */
4097 current_binding_level
->names
= decls
;
4100 /* Similarly, store the list of tags of the current level. */
4106 current_binding_level
->tags
= tags
;
4109 /* Given NAME, an IDENTIFIER_NODE,
4110 return the structure (or union or enum) definition for that name.
4111 Searches binding levels from BINDING_LEVEL up to the global level.
4112 If THISLEVEL_ONLY is nonzero, searches only the specified context
4113 (but skips any tag-transparent contexts to find one that is
4114 meaningful for tags).
4115 FORM says which kind of type the caller wants;
4116 it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
4117 If the wrong kind of type is found, and it's not a template, an error is
4121 lookup_tag (form
, name
, binding_level
, thislevel_only
)
4122 enum tree_code form
;
4124 struct binding_level
*binding_level
;
4127 register struct binding_level
*level
;
4129 for (level
= binding_level
; level
; level
= level
->level_chain
)
4132 if (ANON_AGGRNAME_P (name
))
4133 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4135 /* There's no need for error checking here, because
4136 anon names are unique throughout the compilation. */
4137 if (TYPE_IDENTIFIER (TREE_VALUE (tail
)) == name
)
4138 return TREE_VALUE (tail
);
4141 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4143 if (TREE_PURPOSE (tail
) == name
)
4145 enum tree_code code
= TREE_CODE (TREE_VALUE (tail
));
4146 /* Should tighten this up; it'll probably permit
4147 UNION_TYPE and a struct template, for example. */
4149 && !(form
!= ENUMERAL_TYPE
&& code
== TEMPLATE_DECL
))
4151 /* Definition isn't the kind we were looking for. */
4152 cp_error ("`%#D' redeclared as %C", TREE_VALUE (tail
),
4156 return TREE_VALUE (tail
);
4159 if (thislevel_only
&& ! level
->tag_transparent
)
4161 if (level
->pseudo_global
)
4163 tree t
= IDENTIFIER_GLOBAL_VALUE (name
);
4164 if (t
&& TREE_CODE (t
) == TEMPLATE_DECL
4165 && TREE_CODE (DECL_TEMPLATE_RESULT (t
)) == TYPE_DECL
)
4166 return TREE_TYPE (t
);
4170 if (current_class_type
&& level
->level_chain
== global_binding_level
)
4172 /* Try looking in this class's tags before heading into
4173 global binding level. */
4174 tree context
= current_class_type
;
4177 switch (TREE_CODE_CLASS (TREE_CODE (context
)))
4181 these_tags
= CLASSTYPE_TAGS (context
);
4182 if (ANON_AGGRNAME_P (name
))
4185 if (TYPE_IDENTIFIER (TREE_VALUE (these_tags
))
4187 return TREE_VALUE (tail
);
4188 these_tags
= TREE_CHAIN (these_tags
);
4193 if (TREE_PURPOSE (these_tags
) == name
)
4195 if (TREE_CODE (TREE_VALUE (these_tags
)) != form
)
4197 cp_error ("`%#D' redeclared as %C in class scope",
4198 TREE_VALUE (tail
), form
);
4201 return TREE_VALUE (tail
);
4203 these_tags
= TREE_CHAIN (these_tags
);
4205 /* If this type is not yet complete, then don't
4206 look at its context. */
4207 if (TYPE_SIZE (context
) == NULL_TREE
)
4209 /* Go to next enclosing type, if any. */
4210 context
= DECL_CONTEXT (TYPE_MAIN_DECL (context
));
4213 context
= DECL_CONTEXT (context
);
4216 my_friendly_abort (10);
4229 set_current_level_tags_transparency (tags_transparent
)
4230 int tags_transparent
;
4232 current_binding_level
->tag_transparent
= tags_transparent
;
4236 /* Given a type, find the tag that was defined for it and return the tag name.
4237 Otherwise return 0. However, the value can never be 0
4238 in the cases in which this is used.
4240 C++: If NAME is non-zero, this is the new name to install. This is
4241 done when replacing anonymous tags with real tag names. */
4244 lookup_tag_reverse (type
, name
)
4248 register struct binding_level
*level
;
4250 for (level
= current_binding_level
; level
; level
= level
->level_chain
)
4253 for (tail
= level
->tags
; tail
; tail
= TREE_CHAIN (tail
))
4255 if (TREE_VALUE (tail
) == type
)
4258 TREE_PURPOSE (tail
) = name
;
4259 return TREE_PURPOSE (tail
);
4266 /* Lookup TYPE in CONTEXT (a chain of nested types or a FUNCTION_DECL).
4267 Return the type value, or NULL_TREE if not found. */
4270 lookup_nested_type (type
, context
)
4274 if (context
== NULL_TREE
)
4278 switch (TREE_CODE (context
))
4282 tree ctype
= TREE_TYPE (context
);
4283 tree match
= value_member (type
, CLASSTYPE_TAGS (ctype
));
4285 return TREE_VALUE (match
);
4286 context
= DECL_CONTEXT (context
);
4288 /* When we have a nested class whose member functions have
4289 local types (e.g., a set of enums), we'll arrive here
4290 with the DECL_CONTEXT as the actual RECORD_TYPE node for
4291 the enclosing class. Instead, we want to make sure we
4292 come back in here with the TYPE_DECL, not the RECORD_TYPE. */
4293 if (context
&& TREE_CODE (context
) == RECORD_TYPE
)
4294 context
= TREE_CHAIN (context
);
4298 if (TYPE_NAME (type
) && TYPE_IDENTIFIER (type
))
4299 return lookup_name (TYPE_IDENTIFIER (type
), 1);
4302 my_friendly_abort (12);
4308 /* Look up NAME in the NAMESPACE. */
4311 lookup_namespace_name (namespace, name
)
4312 tree
namespace, name
;
4314 struct binding_level
*b
= (struct binding_level
*)NAMESPACE_LEVEL (namespace);
4318 /* This searches just one level. */
4321 for (x
= b
->names
; x
; x
= TREE_CHAIN (x
))
4322 if (DECL_NAME (x
) == name
|| DECL_ASSEMBLER_NAME (x
) == name
)
4326 /* This searches all levels. */
4327 for (; b
&& !x
; b
= b
->level_chain
)
4329 for (x
= b
->names
; x
; x
= TREE_CHAIN (x
))
4330 if (DECL_NAME (x
) == name
|| DECL_ASSEMBLER_NAME (x
) == name
)
4338 make_typename_type (context
, name
)
4343 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
4344 name
= TYPE_IDENTIFIER (name
);
4345 else if (TREE_CODE (name
) == TYPE_DECL
)
4346 name
= DECL_NAME (name
);
4347 else if (TREE_CODE (name
) != IDENTIFIER_NODE
)
4348 my_friendly_abort (2000);
4350 if (! uses_template_parms (context
)
4351 || context
== current_class_type
)
4353 if (IS_AGGR_TYPE (context
))
4354 t
= lookup_field (context
, name
, 0, 1);
4360 cp_error ("no type named `%#T' in `%#T'", name
, context
);
4361 return error_mark_node
;
4363 return TREE_TYPE (t
);
4366 if (processing_template_decl
)
4367 push_obstacks (&permanent_obstack
, &permanent_obstack
);
4368 t
= make_lang_type (TYPENAME_TYPE
);
4369 d
= build_decl (TYPE_DECL
, name
, t
);
4370 if (processing_template_decl
)
4373 TYPE_CONTEXT (t
) = context
;
4374 TYPE_NAME (TREE_TYPE (d
)) = d
;
4375 TYPE_STUB_DECL (TREE_TYPE (d
)) = d
;
4376 DECL_CONTEXT (d
) = context
;
4377 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
4382 /* Look up NAME in the current binding level and its superiors in the
4383 namespace of variables, functions and typedefs. Return a ..._DECL
4384 node of some kind representing its definition if there is only one
4385 such declaration, or return a TREE_LIST with all the overloaded
4386 definitions if there are many, or return 0 if it is undefined.
4388 If PREFER_TYPE is > 0, we prefer TYPE_DECLs.
4389 If PREFER_TYPE is -2, we're being called from yylex(). (UGLY)
4390 Otherwise we prefer non-TYPE_DECLs. */
4393 lookup_name_real (name
, prefer_type
, nonclass
)
4395 int prefer_type
, nonclass
;
4399 tree from_obj
= NULL_TREE
;
4400 tree locval
, classval
;
4402 if (prefer_type
== -2)
4404 extern int looking_for_typename
;
4405 tree type
= NULL_TREE
;
4408 prefer_type
= looking_for_typename
;
4410 /* std:: becomes :: for now. */
4411 if (got_scope
== std_node
)
4412 got_scope
= void_type_node
;
4416 else if (got_object
!= error_mark_node
)
4421 if (type
== error_mark_node
)
4422 return error_mark_node
;
4423 if (TREE_CODE (type
) == TYPENAME_TYPE
&& TREE_TYPE (type
))
4424 type
= TREE_TYPE (type
);
4426 type
= complete_type (type
);
4428 if (type
== void_type_node
)
4429 val
= IDENTIFIER_GLOBAL_VALUE (name
);
4430 else if (TREE_CODE (type
) == NAMESPACE_DECL
)
4432 val
= lookup_namespace_name (type
, name
);
4434 else if (! IS_AGGR_TYPE (type
)
4435 || TREE_CODE (type
) == TEMPLATE_TYPE_PARM
4436 || TREE_CODE (type
) == TYPENAME_TYPE
)
4437 /* Someone else will give an error about this if needed. */
4439 else if (TYPE_BEING_DEFINED (type
))
4441 val
= IDENTIFIER_CLASS_VALUE (name
);
4442 if (val
&& DECL_CONTEXT (val
) != type
)
4444 struct binding_level
*b
= class_binding_level
;
4445 for (val
= NULL_TREE
; b
; b
= b
->level_chain
)
4447 tree t
= purpose_member (name
, b
->class_shadowed
);
4448 if (t
&& TREE_VALUE (t
)
4449 && DECL_CONTEXT (TREE_VALUE (t
)) == type
)
4451 val
= TREE_VALUE (t
);
4456 if (val
== NULL_TREE
)
4457 val
= lookup_field (type
, name
, 0, 1);
4459 else if (type
== current_class_type
)
4460 val
= IDENTIFIER_CLASS_VALUE (name
);
4462 val
= lookup_field (type
, name
, 0, prefer_type
);
4467 /* Add implicit 'typename' to scoped types from other classes. */
4468 if (got_scope
&& processing_template_decl
4469 && got_scope
!= current_class_type
4470 && uses_template_parms (got_scope
)
4471 && val
&& TREE_CODE (val
) == TYPE_DECL
4472 && ! DECL_ARTIFICIAL (val
))
4474 tree t
= make_typename_type (got_scope
, DECL_NAME (val
));
4475 TREE_TYPE (t
) = TREE_TYPE (val
);
4476 val
= TYPE_MAIN_DECL (t
);
4481 else if (got_object
&& val
)
4485 locval
= classval
= NULL_TREE
;
4487 if (current_binding_level
!= global_binding_level
4488 && IDENTIFIER_LOCAL_VALUE (name
))
4489 locval
= IDENTIFIER_LOCAL_VALUE (name
);
4491 /* In C++ class fields are between local and global scope,
4492 just before the global scope. */
4493 if (current_class_type
&& ! nonclass
)
4495 classval
= IDENTIFIER_CLASS_VALUE (name
);
4496 if (classval
== NULL_TREE
&& TYPE_BEING_DEFINED (current_class_type
))
4497 /* Try to find values from base classes if we are presently
4498 defining a type. We are presently only interested in
4500 classval
= lookup_field (current_class_type
, name
, 0, 1);
4502 /* yylex() calls this with -2, since we should never start digging for
4503 the nested name at the point where we haven't even, for example,
4504 created the COMPONENT_REF or anything like that. */
4505 if (classval
== NULL_TREE
)
4506 classval
= lookup_nested_field (name
, ! yylex
);
4508 /* Add implicit 'typename' to types from base classes. */
4509 if (processing_template_decl
4510 && classval
&& TREE_CODE (classval
) == TYPE_DECL
4511 && DECL_CONTEXT (classval
) != current_class_type
4512 && uses_template_parms (DECL_CONTEXT (classval
))
4513 && ! DECL_ARTIFICIAL (classval
))
4515 tree t
= make_typename_type (DECL_CONTEXT (classval
),
4516 DECL_NAME (classval
));
4517 TREE_TYPE (t
) = TREE_TYPE (classval
);
4518 classval
= TYPE_MAIN_DECL (t
);
4522 if (locval
&& classval
)
4524 if (current_scope () == current_function_decl
4525 && ! hack_decl_function_context (current_function_decl
))
4526 /* Not in a nested function. */
4530 /* This is incredibly horrible. The whole concept of
4531 IDENTIFIER_LOCAL_VALUE / IDENTIFIER_CLASS_VALUE /
4532 IDENTIFIER_GLOBAL_VALUE needs to be scrapped for local
4534 tree lctx
= hack_decl_function_context (locval
);
4535 tree cctx
= hack_decl_function_context (classval
);
4537 if (lctx
== current_scope ())
4539 else if (lctx
== cctx
)
4542 /* I don't know which is right; let's just guess for now. */
4551 val
= IDENTIFIER_GLOBAL_VALUE (name
);
4556 /* This should only warn about types used in qualified-ids. */
4557 if (from_obj
&& from_obj
!= val
)
4559 if (looking_for_typename
&& TREE_CODE (from_obj
) == TYPE_DECL
4560 && TREE_CODE (val
) == TYPE_DECL
4561 && TREE_TYPE (from_obj
) != TREE_TYPE (val
))
4563 cp_pedwarn ("lookup of `%D' in the scope of `%#T' (`%#T')",
4564 name
, got_object
, TREE_TYPE (from_obj
));
4565 cp_pedwarn (" does not match lookup in the current scope (`%#T')",
4572 if ((TREE_CODE (val
) == TEMPLATE_DECL
&& looking_for_template
)
4573 || TREE_CODE (val
) == TYPE_DECL
|| prefer_type
<= 0)
4575 else if (IDENTIFIER_HAS_TYPE_VALUE (name
))
4576 val
= TYPE_MAIN_DECL (IDENTIFIER_TYPE_VALUE (name
));
4577 else if (TREE_TYPE (val
) == error_mark_node
)
4578 val
= error_mark_node
;
4587 lookup_name_nonclass (name
)
4590 return lookup_name_real (name
, 0, 1);
4594 lookup_name (name
, prefer_type
)
4598 return lookup_name_real (name
, prefer_type
, 0);
4601 /* Similar to `lookup_name' but look only at current binding level. */
4604 lookup_name_current_level (name
)
4607 register tree t
= NULL_TREE
;
4609 if (current_binding_level
== global_binding_level
)
4611 t
= IDENTIFIER_GLOBAL_VALUE (name
);
4613 /* extern "C" function() */
4614 if (t
!= NULL_TREE
&& TREE_CODE (t
) == TREE_LIST
)
4617 else if (IDENTIFIER_LOCAL_VALUE (name
) != NULL_TREE
)
4619 struct binding_level
*b
= current_binding_level
;
4622 for (t
= b
->names
; t
; t
= TREE_CHAIN (t
))
4623 if (DECL_NAME (t
) == name
|| DECL_ASSEMBLER_NAME (t
) == name
)
4637 /* Arrange for the user to get a source line number, even when the
4638 compiler is going down in flames, so that she at least has a
4639 chance of working around problems in the compiler. We used to
4640 call error(), but that let the segmentation fault continue
4641 through; now, it's much more passive by asking them to send the
4642 maintainers mail about the problem. */
4648 signal (SIGSEGV
, SIG_DFL
);
4650 signal (SIGIOT
, SIG_DFL
);
4653 signal (SIGILL
, SIG_DFL
);
4656 signal (SIGABRT
, SIG_DFL
);
4659 signal (SIGBUS
, SIG_DFL
);
4661 my_friendly_abort (0);
4665 /* Unused -- brendan 970107 */
4666 /* Array for holding types considered "built-in". These types
4667 are output in the module in which `main' is defined. */
4668 static tree
*builtin_type_tdescs_arr
;
4669 static int builtin_type_tdescs_len
, builtin_type_tdescs_max
;
4672 /* Push the declarations of builtin types into the namespace.
4673 RID_INDEX, if < RID_MAX is the index of the builtin type
4674 in the array RID_POINTERS. NAME is the name used when looking
4675 up the builtin type. TYPE is the _TYPE node for the builtin type. */
4678 record_builtin_type (rid_index
, name
, type
)
4683 tree rname
= NULL_TREE
, tname
= NULL_TREE
;
4686 if ((int) rid_index
< (int) RID_MAX
)
4687 rname
= ridpointers
[(int) rid_index
];
4689 tname
= get_identifier (name
);
4691 TYPE_BUILT_IN (type
) = 1;
4695 tdecl
= pushdecl (build_decl (TYPE_DECL
, tname
, type
));
4696 set_identifier_type_value (tname
, NULL_TREE
);
4697 if ((int) rid_index
< (int) RID_MAX
)
4698 IDENTIFIER_GLOBAL_VALUE (tname
) = tdecl
;
4700 if (rname
!= NULL_TREE
)
4702 if (tname
!= NULL_TREE
)
4704 set_identifier_type_value (rname
, NULL_TREE
);
4705 IDENTIFIER_GLOBAL_VALUE (rname
) = tdecl
;
4709 tdecl
= pushdecl (build_decl (TYPE_DECL
, rname
, type
));
4710 set_identifier_type_value (rname
, NULL_TREE
);
4715 /* Push overloaded decl, in global scope, with one argument so it
4716 can be used as a callback from define_function. */
4719 push_overloaded_decl_1 (x
)
4722 push_overloaded_decl (x
, 0);
4729 auto_function (name
, type
, code
)
4731 enum built_in_function code
;
4733 return define_function
4734 (IDENTIFIER_POINTER (name
), type
, code
, push_overloaded_decl_1
,
4735 IDENTIFIER_POINTER (build_decl_overload (name
, TYPE_ARG_TYPES (type
),
4739 /* Create the predefined scalar types of C,
4740 and some nodes representing standard constants (0, 1, (void *)0).
4741 Initialize the global binding level.
4742 Make definitions for built-in primitive functions. */
4745 init_decl_processing ()
4748 register tree endlink
, int_endlink
, double_endlink
, unsigned_endlink
;
4750 /* Data type of memcpy. */
4751 tree memcpy_ftype
, strlen_ftype
;
4752 int wchar_type_size
;
4754 tree array_domain_type
;
4755 extern int flag_strict_prototype
;
4756 tree vb_off_identifier
;
4757 /* Function type `char *(char *, char *)' and similar ones */
4758 tree string_ftype_ptr_ptr
, int_ftype_string_string
;
4759 tree sizetype_endlink
;
4760 tree ptr_ftype
, ptr_ftype_unsigned
, ptr_ftype_sizetype
;
4761 tree void_ftype
, void_ftype_int
, void_ftype_ptr
, ptr_ftype_void
;
4763 /* Have to make these distinct before we try using them. */
4764 lang_name_cplusplus
= get_identifier ("C++");
4765 lang_name_c
= get_identifier ("C");
4767 if (flag_strict_prototype
== 2)
4770 strict_prototypes_lang_c
= strict_prototypes_lang_cplusplus
;
4773 strict_prototypes_lang_c
= flag_strict_prototype
;
4776 current_lang_name
= lang_name_c
;
4778 current_function_decl
= NULL_TREE
;
4779 named_labels
= NULL_TREE
;
4780 named_label_uses
= NULL
;
4781 current_binding_level
= NULL_BINDING_LEVEL
;
4782 free_binding_level
= NULL_BINDING_LEVEL
;
4784 #ifndef __CYGWIN32__
4785 /* Because most segmentation signals can be traced back into user
4786 code, catch them and at least give the user a chance of working
4787 around compiler bugs. */
4788 signal (SIGSEGV
, signal_catch
);
4790 /* We will also catch aborts in the back-end through signal_catch and
4791 give the user a chance to see where the error might be, and to defeat
4792 aborts in the back-end when there have been errors previously in their
4795 signal (SIGIOT
, signal_catch
);
4798 signal (SIGILL
, signal_catch
);
4801 signal (SIGABRT
, signal_catch
);
4804 signal (SIGBUS
, signal_catch
);
4806 #else /* ndef __CYGWIN32__ */
4807 /* Cygwin32 cannot handle catching signals other than
4808 SIGABRT yet. We hope this will cease to be the case soon. */
4810 signal (SIGABRT
, signal_catch
);
4812 #endif /* ndef __CYGWIN32__ */
4814 gcc_obstack_init (&decl_obstack
);
4816 /* Must lay these out before anything else gets laid out. */
4817 error_mark_node
= make_node (ERROR_MARK
);
4818 TREE_PERMANENT (error_mark_node
) = 1;
4819 TREE_TYPE (error_mark_node
) = error_mark_node
;
4820 error_mark_list
= build_tree_list (error_mark_node
, error_mark_node
);
4821 TREE_TYPE (error_mark_list
) = error_mark_node
;
4823 /* Make the binding_level structure for global names. */
4825 global_binding_level
= current_binding_level
;
4827 this_identifier
= get_identifier (THIS_NAME
);
4828 in_charge_identifier
= get_identifier (IN_CHARGE_NAME
);
4829 ctor_identifier
= get_identifier (CTOR_NAME
);
4830 dtor_identifier
= get_identifier (DTOR_NAME
);
4831 pfn_identifier
= get_identifier (VTABLE_PFN_NAME
);
4832 index_identifier
= get_identifier (VTABLE_INDEX_NAME
);
4833 delta_identifier
= get_identifier (VTABLE_DELTA_NAME
);
4834 delta2_identifier
= get_identifier (VTABLE_DELTA2_NAME
);
4835 pfn_or_delta2_identifier
= get_identifier ("__pfn_or_delta2");
4836 if (flag_handle_signatures
)
4838 tag_identifier
= get_identifier (SIGTABLE_TAG_NAME
);
4839 vb_off_identifier
= get_identifier (SIGTABLE_VB_OFF_NAME
);
4840 vt_off_identifier
= get_identifier (SIGTABLE_VT_OFF_NAME
);
4843 /* Define `int' and `char' first so that dbx will output them first. */
4845 integer_type_node
= make_signed_type (INT_TYPE_SIZE
);
4846 record_builtin_type (RID_INT
, NULL_PTR
, integer_type_node
);
4848 /* Define `char', which is like either `signed char' or `unsigned char'
4849 but not the same as either. */
4853 ? make_signed_type (CHAR_TYPE_SIZE
)
4854 : make_unsigned_type (CHAR_TYPE_SIZE
));
4855 record_builtin_type (RID_CHAR
, "char", char_type_node
);
4857 long_integer_type_node
= make_signed_type (LONG_TYPE_SIZE
);
4858 record_builtin_type (RID_LONG
, "long int", long_integer_type_node
);
4860 unsigned_type_node
= make_unsigned_type (INT_TYPE_SIZE
);
4861 record_builtin_type (RID_UNSIGNED
, "unsigned int", unsigned_type_node
);
4863 long_unsigned_type_node
= make_unsigned_type (LONG_TYPE_SIZE
);
4864 record_builtin_type (RID_MAX
, "long unsigned int", long_unsigned_type_node
);
4865 record_builtin_type (RID_MAX
, "unsigned long", long_unsigned_type_node
);
4867 long_long_integer_type_node
= make_signed_type (LONG_LONG_TYPE_SIZE
);
4868 record_builtin_type (RID_MAX
, "long long int", long_long_integer_type_node
);
4870 long_long_unsigned_type_node
= make_unsigned_type (LONG_LONG_TYPE_SIZE
);
4871 record_builtin_type (RID_MAX
, "long long unsigned int",
4872 long_long_unsigned_type_node
);
4873 record_builtin_type (RID_MAX
, "long long unsigned",
4874 long_long_unsigned_type_node
);
4876 short_integer_type_node
= make_signed_type (SHORT_TYPE_SIZE
);
4877 record_builtin_type (RID_SHORT
, "short int", short_integer_type_node
);
4878 short_unsigned_type_node
= make_unsigned_type (SHORT_TYPE_SIZE
);
4879 record_builtin_type (RID_MAX
, "short unsigned int", short_unsigned_type_node
);
4880 record_builtin_type (RID_MAX
, "unsigned short", short_unsigned_type_node
);
4882 /* `unsigned long' is the standard type for sizeof.
4883 Note that stddef.h uses `unsigned long',
4884 and this must agree, even of long and int are the same size. */
4886 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (SIZE_TYPE
)));
4889 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (PTRDIFF_TYPE
)));
4891 TREE_TYPE (TYPE_SIZE (integer_type_node
)) = sizetype
;
4892 TREE_TYPE (TYPE_SIZE (char_type_node
)) = sizetype
;
4893 TREE_TYPE (TYPE_SIZE (unsigned_type_node
)) = sizetype
;
4894 TREE_TYPE (TYPE_SIZE (long_unsigned_type_node
)) = sizetype
;
4895 TREE_TYPE (TYPE_SIZE (long_integer_type_node
)) = sizetype
;
4896 TREE_TYPE (TYPE_SIZE (long_long_integer_type_node
)) = sizetype
;
4897 TREE_TYPE (TYPE_SIZE (long_long_unsigned_type_node
)) = sizetype
;
4898 TREE_TYPE (TYPE_SIZE (short_integer_type_node
)) = sizetype
;
4899 TREE_TYPE (TYPE_SIZE (short_unsigned_type_node
)) = sizetype
;
4901 /* Define both `signed char' and `unsigned char'. */
4902 signed_char_type_node
= make_signed_type (CHAR_TYPE_SIZE
);
4903 record_builtin_type (RID_MAX
, "signed char", signed_char_type_node
);
4904 unsigned_char_type_node
= make_unsigned_type (CHAR_TYPE_SIZE
);
4905 record_builtin_type (RID_MAX
, "unsigned char", unsigned_char_type_node
);
4907 /* These are types that type_for_size and type_for_mode use. */
4908 intQI_type_node
= make_signed_type (GET_MODE_BITSIZE (QImode
));
4909 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intQI_type_node
));
4910 intHI_type_node
= make_signed_type (GET_MODE_BITSIZE (HImode
));
4911 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intHI_type_node
));
4912 intSI_type_node
= make_signed_type (GET_MODE_BITSIZE (SImode
));
4913 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intSI_type_node
));
4914 intDI_type_node
= make_signed_type (GET_MODE_BITSIZE (DImode
));
4915 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, intDI_type_node
));
4916 unsigned_intQI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (QImode
));
4917 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intQI_type_node
));
4918 unsigned_intHI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (HImode
));
4919 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intHI_type_node
));
4920 unsigned_intSI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (SImode
));
4921 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intSI_type_node
));
4922 unsigned_intDI_type_node
= make_unsigned_type (GET_MODE_BITSIZE (DImode
));
4923 pushdecl (build_decl (TYPE_DECL
, NULL_TREE
, unsigned_intDI_type_node
));
4925 float_type_node
= make_node (REAL_TYPE
);
4926 TYPE_PRECISION (float_type_node
) = FLOAT_TYPE_SIZE
;
4927 record_builtin_type (RID_FLOAT
, NULL_PTR
, float_type_node
);
4928 layout_type (float_type_node
);
4930 double_type_node
= make_node (REAL_TYPE
);
4931 if (flag_short_double
)
4932 TYPE_PRECISION (double_type_node
) = FLOAT_TYPE_SIZE
;
4934 TYPE_PRECISION (double_type_node
) = DOUBLE_TYPE_SIZE
;
4935 record_builtin_type (RID_DOUBLE
, NULL_PTR
, double_type_node
);
4936 layout_type (double_type_node
);
4938 long_double_type_node
= make_node (REAL_TYPE
);
4939 TYPE_PRECISION (long_double_type_node
) = LONG_DOUBLE_TYPE_SIZE
;
4940 record_builtin_type (RID_MAX
, "long double", long_double_type_node
);
4941 layout_type (long_double_type_node
);
4943 complex_integer_type_node
= make_node (COMPLEX_TYPE
);
4944 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex int"),
4945 complex_integer_type_node
));
4946 TREE_TYPE (complex_integer_type_node
) = integer_type_node
;
4947 layout_type (complex_integer_type_node
);
4949 complex_float_type_node
= make_node (COMPLEX_TYPE
);
4950 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex float"),
4951 complex_float_type_node
));
4952 TREE_TYPE (complex_float_type_node
) = float_type_node
;
4953 layout_type (complex_float_type_node
);
4955 complex_double_type_node
= make_node (COMPLEX_TYPE
);
4956 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex double"),
4957 complex_double_type_node
));
4958 TREE_TYPE (complex_double_type_node
) = double_type_node
;
4959 layout_type (complex_double_type_node
);
4961 complex_long_double_type_node
= make_node (COMPLEX_TYPE
);
4962 pushdecl (build_decl (TYPE_DECL
, get_identifier ("complex long double"),
4963 complex_long_double_type_node
));
4964 TREE_TYPE (complex_long_double_type_node
) = long_double_type_node
;
4965 layout_type (complex_long_double_type_node
);
4967 integer_zero_node
= build_int_2 (0, 0);
4968 TREE_TYPE (integer_zero_node
) = integer_type_node
;
4969 integer_one_node
= build_int_2 (1, 0);
4970 TREE_TYPE (integer_one_node
) = integer_type_node
;
4971 integer_two_node
= build_int_2 (2, 0);
4972 TREE_TYPE (integer_two_node
) = integer_type_node
;
4973 integer_three_node
= build_int_2 (3, 0);
4974 TREE_TYPE (integer_three_node
) = integer_type_node
;
4976 boolean_type_node
= make_unsigned_type (BOOL_TYPE_SIZE
);
4977 TREE_SET_CODE (boolean_type_node
, BOOLEAN_TYPE
);
4978 record_builtin_type (RID_BOOL
, "bool", boolean_type_node
);
4979 boolean_false_node
= build_int_2 (0, 0);
4980 TREE_TYPE (boolean_false_node
) = boolean_type_node
;
4981 boolean_true_node
= build_int_2 (1, 0);
4982 TREE_TYPE (boolean_true_node
) = boolean_type_node
;
4984 /* These are needed by stor-layout.c. */
4985 size_zero_node
= size_int (0);
4986 size_one_node
= size_int (1);
4988 signed_size_zero_node
= build_int_2 (0, 0);
4989 TREE_TYPE (signed_size_zero_node
) = make_signed_type (TYPE_PRECISION (sizetype
));
4991 void_type_node
= make_node (VOID_TYPE
);
4992 record_builtin_type (RID_VOID
, NULL_PTR
, void_type_node
);
4993 layout_type (void_type_node
); /* Uses integer_zero_node. */
4994 void_list_node
= build_tree_list (NULL_TREE
, void_type_node
);
4995 TREE_PARMLIST (void_list_node
) = 1;
4997 null_pointer_node
= build_int_2 (0, 0);
4998 TREE_TYPE (null_pointer_node
) = build_pointer_type (void_type_node
);
4999 layout_type (TREE_TYPE (null_pointer_node
));
5001 /* Used for expressions that do nothing, but are not errors. */
5002 void_zero_node
= build_int_2 (0, 0);
5003 TREE_TYPE (void_zero_node
) = void_type_node
;
5005 string_type_node
= build_pointer_type (char_type_node
);
5006 const_string_type_node
5007 = build_pointer_type (build_type_variant (char_type_node
, 1, 0));
5009 record_builtin_type (RID_MAX
, NULL_PTR
, string_type_node
);
5012 /* Make a type to be the domain of a few array types
5013 whose domains don't really matter.
5014 200 is small enough that it always fits in size_t
5015 and large enough that it can hold most function names for the
5016 initializations of __FUNCTION__ and __PRETTY_FUNCTION__. */
5017 array_domain_type
= build_index_type (build_int_2 (200, 0));
5019 /* make a type for arrays of characters.
5020 With luck nothing will ever really depend on the length of this
5022 char_array_type_node
5023 = build_array_type (char_type_node
, array_domain_type
);
5024 /* Likewise for arrays of ints. */
5026 = build_array_type (integer_type_node
, array_domain_type
);
5028 /* This is just some anonymous class type. Nobody should ever
5029 need to look inside this envelope. */
5030 class_star_type_node
= build_pointer_type (make_lang_type (RECORD_TYPE
));
5032 default_function_type
5033 = build_function_type (integer_type_node
, NULL_TREE
);
5035 ptr_type_node
= build_pointer_type (void_type_node
);
5037 = build_pointer_type (build_type_variant (void_type_node
, 1, 0));
5039 record_builtin_type (RID_MAX
, NULL_PTR
, ptr_type_node
);
5041 endlink
= void_list_node
;
5042 int_endlink
= tree_cons (NULL_TREE
, integer_type_node
, endlink
);
5043 double_endlink
= tree_cons (NULL_TREE
, double_type_node
, endlink
);
5044 unsigned_endlink
= tree_cons (NULL_TREE
, unsigned_type_node
, endlink
);
5046 ptr_ftype
= build_function_type (ptr_type_node
, NULL_TREE
);
5047 ptr_ftype_unsigned
= build_function_type (ptr_type_node
, unsigned_endlink
);
5048 sizetype_endlink
= tree_cons (NULL_TREE
, sizetype
, endlink
);
5049 /* We realloc here because sizetype could be int or unsigned. S'ok. */
5050 ptr_ftype_sizetype
= build_function_type (ptr_type_node
, sizetype_endlink
);
5052 void_ftype
= build_function_type (void_type_node
, endlink
);
5053 void_ftype_int
= build_function_type (void_type_node
, int_endlink
);
5055 = build_function_type (void_type_node
,
5056 tree_cons (NULL_TREE
, ptr_type_node
, endlink
));
5058 = build_exception_variant (void_ftype_ptr
,
5059 tree_cons (NULL_TREE
, NULL_TREE
, NULL_TREE
));
5062 = build_function_type (float_type_node
,
5063 tree_cons (NULL_TREE
, float_type_node
, endlink
));
5066 = build_function_type (double_type_node
, double_endlink
);
5068 ldouble_ftype_ldouble
5069 = build_function_type (long_double_type_node
,
5070 tree_cons (NULL_TREE
, long_double_type_node
,
5073 double_ftype_double_double
5074 = build_function_type (double_type_node
,
5075 tree_cons (NULL_TREE
, double_type_node
,
5079 = build_function_type (integer_type_node
, int_endlink
);
5082 = build_function_type (long_integer_type_node
,
5083 tree_cons (NULL_TREE
, long_integer_type_node
,
5086 int_ftype_cptr_cptr_sizet
5087 = build_function_type (integer_type_node
,
5088 tree_cons (NULL_TREE
, const_ptr_type_node
,
5089 tree_cons (NULL_TREE
, const_ptr_type_node
,
5090 tree_cons (NULL_TREE
,
5094 string_ftype_ptr_ptr
/* strcpy prototype */
5095 = build_function_type (string_type_node
,
5096 tree_cons (NULL_TREE
, string_type_node
,
5097 tree_cons (NULL_TREE
,
5098 const_string_type_node
,
5101 int_ftype_string_string
/* strcmp prototype */
5102 = build_function_type (integer_type_node
,
5103 tree_cons (NULL_TREE
, const_string_type_node
,
5104 tree_cons (NULL_TREE
,
5105 const_string_type_node
,
5108 strlen_ftype
/* strlen prototype */
5109 = build_function_type (sizetype
,
5110 tree_cons (NULL_TREE
, const_string_type_node
,
5113 memcpy_ftype
/* memcpy prototype */
5114 = build_function_type (ptr_type_node
,
5115 tree_cons (NULL_TREE
, ptr_type_node
,
5116 tree_cons (NULL_TREE
, const_ptr_type_node
,
5117 sizetype_endlink
)));
5119 if (flag_huge_objects
)
5120 delta_type_node
= long_integer_type_node
;
5122 delta_type_node
= short_integer_type_node
;
5124 builtin_function ("__builtin_constant_p", default_function_type
,
5125 BUILT_IN_CONSTANT_P
, NULL_PTR
);
5127 builtin_return_address_fndecl
5128 = builtin_function ("__builtin_return_address", ptr_ftype_unsigned
,
5129 BUILT_IN_RETURN_ADDRESS
, NULL_PTR
);
5131 builtin_function ("__builtin_frame_address", ptr_ftype_unsigned
,
5132 BUILT_IN_FRAME_ADDRESS
, NULL_PTR
);
5134 ptr_ftype_void
= build_function_type (ptr_type_node
, endlink
);
5135 builtin_function ("__builtin_fp", ptr_ftype_void
, BUILT_IN_FP
, NULL_PTR
);
5136 builtin_function ("__builtin_sp", ptr_ftype_void
, BUILT_IN_SP
, NULL_PTR
);
5138 builtin_function ("__builtin_alloca", ptr_ftype_sizetype
,
5139 BUILT_IN_ALLOCA
, "alloca");
5140 builtin_function ("__builtin_ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5141 /* Define alloca, ffs as builtins.
5142 Declare _exit just to mark it as volatile. */
5143 if (! flag_no_builtin
&& !flag_no_nonansi_builtin
)
5145 temp
= builtin_function ("alloca", ptr_ftype_sizetype
,
5146 BUILT_IN_ALLOCA
, NULL_PTR
);
5147 /* Suppress error if redefined as a non-function. */
5148 DECL_BUILT_IN_NONANSI (temp
) = 1;
5149 temp
= builtin_function ("ffs", int_ftype_int
, BUILT_IN_FFS
, NULL_PTR
);
5150 /* Suppress error if redefined as a non-function. */
5151 DECL_BUILT_IN_NONANSI (temp
) = 1;
5152 temp
= builtin_function ("_exit", void_ftype_int
,
5153 NOT_BUILT_IN
, NULL_PTR
);
5154 TREE_THIS_VOLATILE (temp
) = 1;
5155 TREE_SIDE_EFFECTS (temp
) = 1;
5156 /* Suppress error if redefined as a non-function. */
5157 DECL_BUILT_IN_NONANSI (temp
) = 1;
5160 builtin_function ("__builtin_abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5161 builtin_function ("__builtin_fabsf", float_ftype_float
, BUILT_IN_FABS
,
5163 builtin_function ("__builtin_fabs", double_ftype_double
, BUILT_IN_FABS
,
5165 builtin_function ("__builtin_fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5167 builtin_function ("__builtin_labs", long_ftype_long
,
5168 BUILT_IN_LABS
, NULL_PTR
);
5169 builtin_function ("__builtin_saveregs", ptr_ftype
,
5170 BUILT_IN_SAVEREGS
, NULL_PTR
);
5171 builtin_function ("__builtin_classify_type", default_function_type
,
5172 BUILT_IN_CLASSIFY_TYPE
, NULL_PTR
);
5173 builtin_function ("__builtin_next_arg", ptr_ftype
,
5174 BUILT_IN_NEXT_ARG
, NULL_PTR
);
5175 builtin_function ("__builtin_args_info", int_ftype_int
,
5176 BUILT_IN_ARGS_INFO
, NULL_PTR
);
5177 builtin_function ("__builtin_setjmp",
5178 build_function_type (integer_type_node
,
5179 tree_cons (NULL_TREE
, ptr_type_node
,
5181 BUILT_IN_SETJMP
, NULL_PTR
);
5182 builtin_function ("__builtin_longjmp",
5183 build_function_type (integer_type_node
,
5184 tree_cons (NULL_TREE
, ptr_type_node
,
5185 tree_cons (NULL_TREE
,
5188 BUILT_IN_LONGJMP
, NULL_PTR
);
5190 /* Untyped call and return. */
5191 builtin_function ("__builtin_apply_args", ptr_ftype
,
5192 BUILT_IN_APPLY_ARGS
, NULL_PTR
);
5194 temp
= tree_cons (NULL_TREE
,
5195 build_pointer_type (build_function_type (void_type_node
,
5197 ptr_ftype_sizetype
);
5198 builtin_function ("__builtin_apply",
5199 build_function_type (ptr_type_node
, temp
),
5200 BUILT_IN_APPLY
, NULL_PTR
);
5201 builtin_function ("__builtin_return", void_ftype_ptr
,
5202 BUILT_IN_RETURN
, NULL_PTR
);
5204 /* Currently under experimentation. */
5205 builtin_function ("__builtin_memcpy", memcpy_ftype
,
5206 BUILT_IN_MEMCPY
, "memcpy");
5207 builtin_function ("__builtin_memcmp", int_ftype_cptr_cptr_sizet
,
5208 BUILT_IN_MEMCMP
, "memcmp");
5209 builtin_function ("__builtin_strcmp", int_ftype_string_string
,
5210 BUILT_IN_STRCMP
, "strcmp");
5211 builtin_function ("__builtin_strcpy", string_ftype_ptr_ptr
,
5212 BUILT_IN_STRCPY
, "strcpy");
5213 builtin_function ("__builtin_strlen", strlen_ftype
,
5214 BUILT_IN_STRLEN
, "strlen");
5215 builtin_function ("__builtin_sqrtf", float_ftype_float
,
5216 BUILT_IN_FSQRT
, "sqrtf");
5217 builtin_function ("__builtin_fsqrt", double_ftype_double
,
5218 BUILT_IN_FSQRT
, NULL_PTR
);
5219 builtin_function ("__builtin_sqrtl", ldouble_ftype_ldouble
,
5220 BUILT_IN_FSQRT
, "sqrtl");
5221 builtin_function ("__builtin_sinf", float_ftype_float
,
5222 BUILT_IN_SIN
, "sinf");
5223 builtin_function ("__builtin_sin", double_ftype_double
,
5224 BUILT_IN_SIN
, "sin");
5225 builtin_function ("__builtin_sinl", ldouble_ftype_ldouble
,
5226 BUILT_IN_SIN
, "sinl");
5227 builtin_function ("__builtin_cosf", float_ftype_float
,
5228 BUILT_IN_COS
, "cosf");
5229 builtin_function ("__builtin_cos", double_ftype_double
,
5230 BUILT_IN_COS
, "cos");
5231 builtin_function ("__builtin_cosl", ldouble_ftype_ldouble
,
5232 BUILT_IN_COS
, "cosl");
5234 if (!flag_no_builtin
)
5236 #if 0 /* These do not work well with libg++. */
5237 builtin_function ("abs", int_ftype_int
, BUILT_IN_ABS
, NULL_PTR
);
5238 builtin_function ("fabs", double_ftype_double
, BUILT_IN_FABS
, NULL_PTR
);
5239 builtin_function ("labs", long_ftype_long
, BUILT_IN_LABS
, NULL_PTR
);
5241 builtin_function ("fabsf", float_ftype_float
, BUILT_IN_FABS
, NULL_PTR
);
5242 builtin_function ("fabsl", ldouble_ftype_ldouble
, BUILT_IN_FABS
,
5244 builtin_function ("memcpy", memcpy_ftype
, BUILT_IN_MEMCPY
, NULL_PTR
);
5245 builtin_function ("memcmp", int_ftype_cptr_cptr_sizet
, BUILT_IN_MEMCMP
,
5247 builtin_function ("strcmp", int_ftype_string_string
, BUILT_IN_STRCMP
,
5249 builtin_function ("strcpy", string_ftype_ptr_ptr
, BUILT_IN_STRCPY
,
5251 builtin_function ("strlen", strlen_ftype
, BUILT_IN_STRLEN
, NULL_PTR
);
5252 builtin_function ("sqrtf", float_ftype_float
, BUILT_IN_FSQRT
, NULL_PTR
);
5253 builtin_function ("sqrt", double_ftype_double
, BUILT_IN_FSQRT
, NULL_PTR
);
5254 builtin_function ("sqrtl", ldouble_ftype_ldouble
, BUILT_IN_FSQRT
,
5256 builtin_function ("sinf", float_ftype_float
, BUILT_IN_SIN
, NULL_PTR
);
5257 builtin_function ("sin", double_ftype_double
, BUILT_IN_SIN
, NULL_PTR
);
5258 builtin_function ("sinl", ldouble_ftype_ldouble
, BUILT_IN_SIN
, NULL_PTR
);
5259 builtin_function ("cosf", float_ftype_float
, BUILT_IN_COS
, NULL_PTR
);
5260 builtin_function ("cos", double_ftype_double
, BUILT_IN_COS
, NULL_PTR
);
5261 builtin_function ("cosl", ldouble_ftype_ldouble
, BUILT_IN_COS
, NULL_PTR
);
5263 /* Declare these functions volatile
5264 to avoid spurious "control drops through" warnings. */
5265 temp
= builtin_function ("abort", void_ftype
,
5266 NOT_BUILT_IN
, NULL_PTR
);
5267 TREE_THIS_VOLATILE (temp
) = 1;
5268 TREE_SIDE_EFFECTS (temp
) = 1;
5269 /* Well, these are actually ANSI, but we can't set DECL_BUILT_IN on
5271 DECL_BUILT_IN_NONANSI (temp
) = 1;
5272 temp
= builtin_function ("exit", void_ftype_int
,
5273 NOT_BUILT_IN
, NULL_PTR
);
5274 TREE_THIS_VOLATILE (temp
) = 1;
5275 TREE_SIDE_EFFECTS (temp
) = 1;
5276 DECL_BUILT_IN_NONANSI (temp
) = 1;
5280 /* Support for these has not been written in either expand_builtin
5281 or build_function_call. */
5282 builtin_function ("__builtin_div", default_ftype
, BUILT_IN_DIV
, NULL_PTR
);
5283 builtin_function ("__builtin_ldiv", default_ftype
, BUILT_IN_LDIV
, NULL_PTR
);
5284 builtin_function ("__builtin_ffloor", double_ftype_double
, BUILT_IN_FFLOOR
,
5286 builtin_function ("__builtin_fceil", double_ftype_double
, BUILT_IN_FCEIL
,
5288 builtin_function ("__builtin_fmod", double_ftype_double_double
,
5289 BUILT_IN_FMOD
, NULL_PTR
);
5290 builtin_function ("__builtin_frem", double_ftype_double_double
,
5291 BUILT_IN_FREM
, NULL_PTR
);
5292 builtin_function ("__builtin_memset", ptr_ftype_ptr_int_int
,
5293 BUILT_IN_MEMSET
, NULL_PTR
);
5294 builtin_function ("__builtin_getexp", double_ftype_double
, BUILT_IN_GETEXP
,
5296 builtin_function ("__builtin_getman", double_ftype_double
, BUILT_IN_GETMAN
,
5300 /* C++ extensions */
5302 unknown_type_node
= make_node (UNKNOWN_TYPE
);
5303 decl
= pushdecl (build_decl (TYPE_DECL
, get_identifier ("unknown type"),
5304 unknown_type_node
));
5305 /* Make sure the "unknown type" typedecl gets ignored for debug info. */
5306 DECL_IGNORED_P (decl
) = 1;
5307 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
5308 TYPE_SIZE (unknown_type_node
) = TYPE_SIZE (void_type_node
);
5309 TYPE_ALIGN (unknown_type_node
) = 1;
5310 TYPE_MODE (unknown_type_node
) = TYPE_MODE (void_type_node
);
5311 /* Indirecting an UNKNOWN_TYPE node yields an UNKNOWN_TYPE node. */
5312 TREE_TYPE (unknown_type_node
) = unknown_type_node
;
5315 TREE_TYPE (null_node
) = type_for_size (POINTER_SIZE
, 0);
5317 TREE_TYPE (null_node
) = build_pointer_type (unknown_type_node
);
5319 /* Looking up TYPE_POINTER_TO and TYPE_REFERENCE_TO yield the same
5321 TYPE_POINTER_TO (unknown_type_node
) = unknown_type_node
;
5322 TYPE_REFERENCE_TO (unknown_type_node
) = unknown_type_node
;
5324 /* This is for handling opaque types in signatures. */
5325 opaque_type_node
= copy_node (ptr_type_node
);
5326 TYPE_MAIN_VARIANT (opaque_type_node
) = opaque_type_node
;
5327 record_builtin_type (RID_MAX
, 0, opaque_type_node
);
5329 /* This is special for C++ so functions can be overloaded. */
5331 = TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (get_identifier (WCHAR_TYPE
)));
5332 wchar_type_size
= TYPE_PRECISION (wchar_type_node
);
5333 signed_wchar_type_node
= make_signed_type (wchar_type_size
);
5334 unsigned_wchar_type_node
= make_unsigned_type (wchar_type_size
);
5336 = TREE_UNSIGNED (wchar_type_node
)
5337 ? unsigned_wchar_type_node
5338 : signed_wchar_type_node
;
5339 record_builtin_type (RID_WCHAR
, "__wchar_t", wchar_type_node
);
5341 /* Artificial declaration of wchar_t -- can be bashed */
5342 wchar_decl_node
= build_decl (TYPE_DECL
, get_identifier ("wchar_t"),
5344 pushdecl (wchar_decl_node
);
5346 /* This is for wide string constants. */
5347 wchar_array_type_node
5348 = build_array_type (wchar_type_node
, array_domain_type
);
5350 if (flag_vtable_thunks
)
5352 /* Make sure we get a unique function type, so we can give
5353 its pointer type a name. (This wins for gdb.) */
5354 tree vfunc_type
= make_node (FUNCTION_TYPE
);
5355 TREE_TYPE (vfunc_type
) = integer_type_node
;
5356 TYPE_ARG_TYPES (vfunc_type
) = NULL_TREE
;
5357 layout_type (vfunc_type
);
5359 vtable_entry_type
= build_pointer_type (vfunc_type
);
5363 vtable_entry_type
= make_lang_type (RECORD_TYPE
);
5364 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
5366 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
5368 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
5370 finish_builtin_type (vtable_entry_type
, VTBL_PTR_TYPE
, fields
, 2,
5373 /* Make this part of an invisible union. */
5374 fields
[3] = copy_node (fields
[2]);
5375 TREE_TYPE (fields
[3]) = delta_type_node
;
5376 DECL_NAME (fields
[3]) = delta2_identifier
;
5377 DECL_MODE (fields
[3]) = TYPE_MODE (delta_type_node
);
5378 DECL_SIZE (fields
[3]) = TYPE_SIZE (delta_type_node
);
5379 TREE_UNSIGNED (fields
[3]) = 0;
5380 TREE_CHAIN (fields
[2]) = fields
[3];
5381 vtable_entry_type
= build_type_variant (vtable_entry_type
, 1, 0);
5383 record_builtin_type (RID_MAX
, VTBL_PTR_TYPE
, vtable_entry_type
);
5386 = build_array_type (vtable_entry_type
, NULL_TREE
);
5387 layout_type (vtbl_type_node
);
5388 vtbl_type_node
= cp_build_type_variant (vtbl_type_node
, 1, 0);
5389 record_builtin_type (RID_MAX
, NULL_PTR
, vtbl_type_node
);
5391 /* Simplify life by making a "sigtable_entry_type". Give its
5392 fields names so that the debugger can use them. */
5394 if (flag_handle_signatures
)
5396 sigtable_entry_type
= make_lang_type (RECORD_TYPE
);
5397 fields
[0] = build_lang_field_decl (FIELD_DECL
, tag_identifier
,
5399 fields
[1] = build_lang_field_decl (FIELD_DECL
, vb_off_identifier
,
5401 fields
[2] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
5403 fields
[3] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
5405 fields
[4] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
,
5408 /* Set the alignment to the max of the alignment of ptr_type_node and
5409 delta_type_node. Double alignment wastes a word on the Sparc. */
5410 finish_builtin_type (sigtable_entry_type
, SIGTABLE_PTR_TYPE
, fields
, 4,
5411 (TYPE_ALIGN (ptr_type_node
) > TYPE_ALIGN (delta_type_node
))
5415 /* Make this part of an invisible union. */
5416 fields
[5] = copy_node (fields
[4]);
5417 TREE_TYPE (fields
[5]) = delta_type_node
;
5418 DECL_NAME (fields
[5]) = vt_off_identifier
;
5419 DECL_MODE (fields
[5]) = TYPE_MODE (delta_type_node
);
5420 DECL_SIZE (fields
[5]) = TYPE_SIZE (delta_type_node
);
5421 TREE_UNSIGNED (fields
[5]) = 0;
5422 TREE_CHAIN (fields
[4]) = fields
[5];
5424 sigtable_entry_type
= build_type_variant (sigtable_entry_type
, 1, 0);
5425 record_builtin_type (RID_MAX
, SIGTABLE_PTR_TYPE
, sigtable_entry_type
);
5428 std_node
= build_decl (NAMESPACE_DECL
, get_identifier ("std"),
5430 pushdecl (std_node
);
5435 /* Must build __t_desc type. Currently, type descriptors look like this:
5442 struct __t_desc *points_to;
5443 int ivars_count, meths_count;
5444 struct __i_desc *ivars[];
5445 struct __m_desc *meths[];
5446 struct __t_desc *parents[];
5447 struct __t_desc *vbases[];
5451 ...as per Linton's paper. */
5453 __t_desc_type_node
= make_lang_type (RECORD_TYPE
);
5454 __i_desc_type_node
= make_lang_type (RECORD_TYPE
);
5455 __m_desc_type_node
= make_lang_type (RECORD_TYPE
);
5457 = build_array_type (build_pointer_type (__t_desc_type_node
),
5460 = build_array_type (build_pointer_type (__i_desc_type_node
),
5463 = build_array_type (build_pointer_type (__m_desc_type_node
),
5466 fields
[0] = build_lang_field_decl (FIELD_DECL
, get_identifier ("name"),
5468 fields
[1] = build_lang_field_decl (FIELD_DECL
, get_identifier ("size"),
5469 unsigned_type_node
);
5470 fields
[2] = build_lang_field_decl (FIELD_DECL
, get_identifier ("bits"),
5471 unsigned_type_node
);
5472 fields
[3] = build_lang_field_decl (FIELD_DECL
,
5473 get_identifier ("points_to"),
5474 build_pointer_type (__t_desc_type_node
));
5475 fields
[4] = build_lang_field_decl (FIELD_DECL
,
5476 get_identifier ("ivars_count"),
5478 fields
[5] = build_lang_field_decl (FIELD_DECL
,
5479 get_identifier ("meths_count"),
5481 fields
[6] = build_lang_field_decl (FIELD_DECL
, get_identifier ("ivars"),
5482 build_pointer_type (__i_desc_array_type
));
5483 fields
[7] = build_lang_field_decl (FIELD_DECL
, get_identifier ("meths"),
5484 build_pointer_type (__m_desc_array_type
));
5485 fields
[8] = build_lang_field_decl (FIELD_DECL
, get_identifier ("parents"),
5486 build_pointer_type (__t_desc_array_type
));
5487 fields
[9] = build_lang_field_decl (FIELD_DECL
, get_identifier ("vbases"),
5488 build_pointer_type (__t_desc_array_type
));
5489 fields
[10] = build_lang_field_decl (FIELD_DECL
, get_identifier ("offsets"),
5490 build_pointer_type (integer_type_node
));
5491 finish_builtin_type (__t_desc_type_node
, "__t_desc", fields
, 10, integer_type_node
);
5493 /* ivar descriptors look like this:
5499 struct __t_desc *type;
5503 fields
[0] = build_lang_field_decl (FIELD_DECL
, get_identifier ("name"),
5505 fields
[1] = build_lang_field_decl (FIELD_DECL
, get_identifier ("offset"),
5507 fields
[2] = build_lang_field_decl (FIELD_DECL
, get_identifier ("type"),
5508 build_pointer_type (__t_desc_type_node
));
5509 finish_builtin_type (__i_desc_type_node
, "__i_desc", fields
, 2,
5512 /* method descriptors look like this:
5518 struct __t_desc *vcontext;
5519 struct __t_desc *return_type;
5522 short required_parms;
5523 struct __t_desc *parm_types[];
5527 fields
[0] = build_lang_field_decl (FIELD_DECL
, get_identifier ("name"),
5529 fields
[1] = build_lang_field_decl (FIELD_DECL
, get_identifier ("vindex"),
5531 fields
[2] = build_lang_field_decl (FIELD_DECL
, get_identifier ("vcontext"),
5532 build_pointer_type (__t_desc_type_node
));
5533 fields
[3] = build_lang_field_decl (FIELD_DECL
, get_identifier ("return_type"),
5534 build_pointer_type (__t_desc_type_node
));
5535 fields
[4] = build_lang_field_decl (FIELD_DECL
, get_identifier ("address"),
5536 build_pointer_type (default_function_type
));
5537 fields
[5] = build_lang_field_decl (FIELD_DECL
, get_identifier ("parm_count"),
5538 short_integer_type_node
);
5539 fields
[6] = build_lang_field_decl (FIELD_DECL
, get_identifier ("required_parms"),
5540 short_integer_type_node
);
5541 fields
[7] = build_lang_field_decl (FIELD_DECL
, get_identifier ("parm_types"),
5542 build_pointer_type (build_array_type (build_pointer_type (__t_desc_type_node
), NULL_TREE
)));
5543 finish_builtin_type (__m_desc_type_node
, "__m_desc", fields
, 7,
5546 #endif /*flag_rtti*/
5549 current_lang_name
= lang_name_cplusplus
;
5551 auto_function (ansi_opname
[(int) NEW_EXPR
], ptr_ftype_sizetype
,
5553 auto_function (ansi_opname
[(int) VEC_NEW_EXPR
], ptr_ftype_sizetype
,
5555 auto_function (ansi_opname
[(int) DELETE_EXPR
], void_ftype_ptr
,
5557 auto_function (ansi_opname
[(int) VEC_DELETE_EXPR
], void_ftype_ptr
,
5561 = define_function ("__pure_virtual", void_ftype
,
5562 NOT_BUILT_IN
, 0, 0);
5564 /* Perform other language dependent initializations. */
5565 init_class_processing ();
5566 init_init_processing ();
5567 init_search_processing ();
5568 init_rtti_processing ();
5570 if (flag_exceptions
)
5571 init_exception_processing ();
5574 flag_inline_functions
= 0;
5577 if (! supports_one_only ())
5580 /* Create the global bindings for __FUNCTION__ and __PRETTY_FUNCTION__. */
5581 declare_function_name ();
5583 /* Prepare to check format strings against argument lists. */
5584 init_function_format_info ();
5587 /* initialize type descriptor type node of various rtti type. */
5594 tdecl
= lookup_name (get_identifier ("type_info"), 0);
5595 if (tdecl
== NULL_TREE
)
5597 __t_desc_type_node
= TREE_TYPE (tdecl
);
5599 __tp_desc_type_node
= build_pointer_type (__t_desc_type_node
);
5603 tdecl
= lookup_name (get_identifier ("__baselist_type_info"), 0);
5604 if (tdecl
== NULL_TREE
)
5606 __baselist_desc_type_node
= TREE_TYPE (tdecl
);
5609 tdecl
= lookup_name (get_identifier ("__builtin_type_info"), 0);
5610 if (tdecl
== NULL_TREE
)
5612 __bltn_desc_type_node
= TREE_TYPE (tdecl
);
5614 tdecl
= lookup_name (get_identifier ("__user_type_info"), 0);
5615 if (tdecl
== NULL_TREE
)
5617 __user_desc_type_node
= TREE_TYPE (tdecl
);
5619 tdecl
= lookup_name (get_identifier ("__class_type_info"), 0);
5620 if (tdecl
== NULL_TREE
)
5622 __class_desc_type_node
= TREE_TYPE (tdecl
);
5624 tdecl
= lookup_field (__class_desc_type_node
,
5625 get_identifier ("access_mode"), 0, 0);
5626 if (tdecl
== NULL_TREE
)
5628 __access_mode_type_node
= TREE_TYPE (tdecl
);
5630 tdecl
= lookup_name (get_identifier ("__attr_type_info"), 0);
5631 if (tdecl
== NULL_TREE
)
5633 __attr_desc_type_node
= TREE_TYPE (tdecl
);
5635 tdecl
= lookup_name (get_identifier ("__pointer_type_info"), 0);
5636 if (tdecl
== NULL_TREE
)
5638 __ptr_desc_type_node
= TREE_TYPE (tdecl
);
5640 tdecl
= lookup_name (get_identifier ("__func_type_info"), 0);
5641 if (tdecl
== NULL_TREE
)
5643 __func_desc_type_node
= TREE_TYPE (tdecl
);
5645 tdecl
= lookup_name (get_identifier ("__ptmf_type_info"), 0);
5646 if (tdecl
== NULL_TREE
)
5648 __ptmf_desc_type_node
= TREE_TYPE (tdecl
);
5650 tdecl
= lookup_name (get_identifier ("__ptmd_type_info"), 0);
5651 if (tdecl
== NULL_TREE
)
5653 __ptmd_desc_type_node
= TREE_TYPE (tdecl
);
5657 /* Make a definition for a builtin function named NAME and whose data type
5658 is TYPE. TYPE should be a function type with argument types.
5659 FUNCTION_CODE tells later passes how to compile calls to this function.
5660 See tree.h for its possible values.
5662 If LIBRARY_NAME is nonzero, use that for DECL_ASSEMBLER_NAME,
5663 the name to be called if we can't opencode the function. */
5666 define_function (name
, type
, function_code
, pfn
, library_name
)
5669 enum built_in_function function_code
;
5670 void (*pfn
) PROTO((tree
));
5673 tree decl
= build_lang_decl (FUNCTION_DECL
, get_identifier (name
), type
);
5674 DECL_EXTERNAL (decl
) = 1;
5675 TREE_PUBLIC (decl
) = 1;
5676 DECL_ARTIFICIAL (decl
) = 1;
5678 /* Since `pushdecl' relies on DECL_ASSEMBLER_NAME instead of DECL_NAME,
5679 we cannot change DECL_ASSEMBLER_NAME until we have installed this
5680 function in the namespace. */
5681 if (pfn
) (*pfn
) (decl
);
5683 DECL_ASSEMBLER_NAME (decl
) = get_identifier (library_name
);
5684 make_function_rtl (decl
);
5685 if (function_code
!= NOT_BUILT_IN
)
5687 DECL_BUILT_IN (decl
) = 1;
5688 DECL_FUNCTION_CODE (decl
) = function_code
;
5693 /* Called when a declaration is seen that contains no names to declare.
5694 If its type is a reference to a structure, union or enum inherited
5695 from a containing scope, shadow that tag name for the current scope
5696 with a forward reference.
5697 If its type defines a new named structure or union
5698 or defines an enum, it is valid but we need not do anything here.
5699 Otherwise, it is an error.
5701 C++: may have to grok the declspecs to learn about static,
5702 complain for anonymous unions. */
5705 shadow_tag (declspecs
)
5709 tree ob_modifier
= NULL_TREE
;
5711 register enum tree_code code
, ok_code
= ERROR_MARK
;
5712 register tree t
= NULL_TREE
;
5714 for (link
= declspecs
; link
; link
= TREE_CHAIN (link
))
5716 register tree value
= TREE_VALUE (link
);
5718 code
= TREE_CODE (value
);
5719 if (IS_AGGR_TYPE_CODE (code
) || code
== ENUMERAL_TYPE
)
5721 my_friendly_assert (TYPE_MAIN_DECL (value
) != NULL_TREE
, 261);
5723 if (IS_AGGR_TYPE (value
) && CLASSTYPE_USE_TEMPLATE (value
))
5725 if (CLASSTYPE_IMPLICIT_INSTANTIATION (value
)
5726 && TYPE_SIZE (value
) == NULL_TREE
)
5728 SET_CLASSTYPE_TEMPLATE_SPECIALIZATION (value
);
5729 if (processing_template_decl
)
5730 push_template_decl (TYPE_MAIN_DECL (value
));
5732 else if (CLASSTYPE_TEMPLATE_INSTANTIATION (value
))
5733 cp_error ("specialization after instantiation of `%T'", value
);
5740 else if (value
== ridpointers
[(int) RID_STATIC
]
5741 || value
== ridpointers
[(int) RID_EXTERN
]
5742 || value
== ridpointers
[(int) RID_AUTO
]
5743 || value
== ridpointers
[(int) RID_REGISTER
]
5744 || value
== ridpointers
[(int) RID_INLINE
]
5745 || value
== ridpointers
[(int) RID_VIRTUAL
]
5746 || value
== ridpointers
[(int) RID_EXPLICIT
])
5747 ob_modifier
= value
;
5750 /* This is where the variables in an anonymous union are
5751 declared. An anonymous union declaration looks like:
5753 because there is no declarator after the union, the parser
5754 sends that declaration here. */
5755 if (ok_code
== UNION_TYPE
5757 && ((TREE_CODE (TYPE_NAME (t
)) == IDENTIFIER_NODE
5758 && ANON_AGGRNAME_P (TYPE_NAME (t
)))
5759 || (TREE_CODE (TYPE_NAME (t
)) == TYPE_DECL
5760 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (t
)))))
5762 /* See also grok_x_components. */
5765 /* Wipe out memory of synthesized methods */
5766 TYPE_HAS_CONSTRUCTOR (t
) = 0;
5767 TYPE_HAS_DEFAULT_CONSTRUCTOR (t
) = 0;
5768 TYPE_HAS_INIT_REF (t
) = 0;
5769 TYPE_HAS_CONST_INIT_REF (t
) = 0;
5770 TYPE_HAS_ASSIGN_REF (t
) = 0;
5771 TYPE_HAS_ASSIGNMENT (t
) = 0;
5772 TYPE_HAS_CONST_ASSIGN_REF (t
) = 0;
5774 q
= &TYPE_METHODS (t
);
5777 if (DECL_ARTIFICIAL (*q
))
5778 *q
= TREE_CHAIN (*q
);
5780 q
= &TREE_CHAIN (*q
);
5783 /* ANSI C++ June 5 1992 WP 9.5.3. Anonymous unions may not have
5784 function members. */
5785 if (TYPE_METHODS (t
))
5786 error ("an anonymous union cannot have function members");
5788 if (TYPE_FIELDS (t
))
5790 tree decl
= grokdeclarator (NULL_TREE
, declspecs
, NORMAL
, 0,
5792 finish_anon_union (decl
);
5797 /* Anonymous unions are objects, that's why we only check for
5798 inappropriate specifiers in this branch. */
5802 if (ob_modifier
== ridpointers
[(int) RID_INLINE
]
5803 || ob_modifier
== ridpointers
[(int) RID_VIRTUAL
])
5804 cp_error ("`%D' can only be specified for functions", ob_modifier
);
5805 else if (ob_modifier
== ridpointers
[(int) RID_EXPLICIT
])
5806 cp_error ("`%D' can only be specified for constructors",
5809 cp_error ("`%D' can only be specified for objects and functions",
5814 pedwarn ("abstract declarator used as declaration");
5815 else if (found_tag
> 1)
5816 pedwarn ("multiple types in one declaration");
5820 /* Decode a "typename", such as "int **", returning a ..._TYPE node. */
5823 groktypename (typename
)
5826 if (TREE_CODE (typename
) != TREE_LIST
)
5828 return grokdeclarator (TREE_VALUE (typename
),
5829 TREE_PURPOSE (typename
),
5830 TYPENAME
, 0, NULL_TREE
);
5833 /* Decode a declarator in an ordinary declaration or data definition.
5834 This is called as soon as the type information and variable name
5835 have been parsed, before parsing the initializer if any.
5836 Here we create the ..._DECL node, fill in its type,
5837 and put it on the list of decls for the current context.
5838 The ..._DECL node is returned as the value.
5840 Exception: for arrays where the length is not specified,
5841 the type is left null, to be filled in by `cp_finish_decl'.
5843 Function definitions do not come here; they go to start_function
5844 instead. However, external and forward declarations of functions
5845 do go through here. Structure field declarations are done by
5846 grokfield and not through here. */
5848 /* Set this to zero to debug not using the temporary obstack
5849 to parse initializers. */
5850 int debug_temp_inits
= 1;
5853 start_decl (declarator
, declspecs
, initialized
)
5854 tree declarator
, declspecs
;
5858 register tree type
, tem
;
5860 extern int have_extern_spec
;
5861 extern int used_extern_spec
;
5864 /* See code below that used this. */
5865 int init_written
= initialized
;
5868 /* This should only be done once on the top most decl. */
5869 if (have_extern_spec
&& !used_extern_spec
)
5871 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"),
5873 used_extern_spec
= 1;
5876 decl
= grokdeclarator (declarator
, declspecs
, NORMAL
, initialized
,
5878 if (decl
== NULL_TREE
|| decl
== void_type_node
)
5881 type
= TREE_TYPE (decl
);
5883 /* Don't lose if destructors must be executed at file-level. */
5884 if (! processing_template_decl
&& TREE_STATIC (decl
)
5885 && TYPE_NEEDS_DESTRUCTOR (complete_type (type
))
5886 && !TREE_PERMANENT (decl
))
5888 push_obstacks (&permanent_obstack
, &permanent_obstack
);
5889 decl
= copy_node (decl
);
5890 if (TREE_CODE (type
) == ARRAY_TYPE
)
5892 tree itype
= TYPE_DOMAIN (type
);
5893 if (itype
&& ! TREE_PERMANENT (itype
))
5895 itype
= build_index_type (copy_to_permanent (TYPE_MAX_VALUE (itype
)));
5896 type
= build_cplus_array_type (TREE_TYPE (type
), itype
);
5897 TREE_TYPE (decl
) = type
;
5904 = (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_VIRTUAL_P (decl
))
5905 ? DECL_CLASS_CONTEXT (decl
)
5906 : DECL_CONTEXT (decl
);
5909 /* Is it valid for this decl to have an initializer at all?
5910 If not, set INITIALIZED to zero, which will indirectly
5911 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
5912 switch (TREE_CODE (decl
))
5915 /* typedef foo = bar means give foo the same type as bar.
5916 We haven't parsed bar yet, so `cp_finish_decl' will fix that up.
5917 Any other case of an initialization in a TYPE_DECL is an error. */
5918 if (pedantic
|| list_length (declspecs
) > 1)
5920 cp_error ("typedef `%D' is initialized", decl
);
5926 cp_error ("function `%#D' is initialized like a variable", decl
);
5931 if (! processing_template_decl
)
5933 if (type
!= error_mark_node
)
5935 if (TYPE_SIZE (type
) != NULL_TREE
5936 && ! TREE_CONSTANT (TYPE_SIZE (type
)))
5939 ("variable-sized object `%D' may not be initialized",
5944 if (TREE_CODE (type
) == ARRAY_TYPE
5945 && TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
5948 ("elements of array `%#D' have incomplete type", decl
);
5957 if (! toplevel_bindings_p ()
5958 && DECL_EXTERNAL (decl
))
5959 cp_warning ("declaration of `%#D' has `extern' and is initialized",
5961 DECL_EXTERNAL (decl
) = 0;
5962 if (toplevel_bindings_p ())
5963 TREE_STATIC (decl
) = 1;
5965 /* Tell `pushdecl' this is an initialized decl
5966 even though we don't yet have the initializer expression.
5967 Also tell `cp_finish_decl' it may store the real initializer. */
5968 DECL_INITIAL (decl
) = error_mark_node
;
5971 if (context
&& TYPE_SIZE (complete_type (context
)) != NULL_TREE
)
5973 if (TREE_CODE (decl
) == VAR_DECL
)
5975 tree field
= lookup_field (context
, DECL_NAME (decl
), 0, 0);
5976 if (field
== NULL_TREE
|| TREE_CODE (field
) != VAR_DECL
)
5977 cp_error ("`%#D' is not a static member of `%#T'", decl
, context
);
5980 if (DECL_CONTEXT (field
) != context
)
5981 cp_pedwarn ("ANSI C++ does not permit `%T::%D' to be defined as `%T::%D'", DECL_CONTEXT (field
), DECL_NAME (decl
), context
, DECL_NAME (decl
));
5982 if (duplicate_decls (decl
, field
))
5988 tree field
= check_classfn (context
, decl
);
5989 if (field
&& duplicate_decls (decl
, field
))
5993 /* cp_finish_decl sets DECL_EXTERNAL if DECL_IN_AGGR_P is set. */
5994 if (DECL_LANG_SPECIFIC (decl
))
5995 DECL_IN_AGGR_P (decl
) = 0;
5996 if (DECL_USE_TEMPLATE (decl
) || CLASSTYPE_USE_TEMPLATE (context
))
5997 SET_DECL_TEMPLATE_SPECIALIZATION (decl
);
5999 /* Stupid stupid stupid stupid (jason 7/21/95) */
6000 if (pedantic
&& DECL_EXTERNAL (decl
)
6001 && ! DECL_TEMPLATE_SPECIALIZATION (decl
))
6002 cp_pedwarn ("declaration of `%#D' outside of class is not definition",
6005 pushclass (context
, 2);
6008 /* Add this decl to the current binding level, but not if it
6009 comes from another scope, e.g. a static member variable.
6010 TEM may equal DECL or it may be a previous decl of the same name. */
6012 if ((TREE_CODE (decl
) != PARM_DECL
&& DECL_CONTEXT (decl
) != NULL_TREE
)
6013 || (TREE_CODE (decl
) == TEMPLATE_DECL
&& !global_bindings_p ())
6014 || TREE_CODE (type
) == LANG_TYPE
)
6017 tem
= pushdecl (decl
);
6019 if (processing_template_decl
)
6021 if (! current_function_decl
)
6022 push_template_decl (tem
);
6023 else if (minimal_parse_mode
)
6025 = build_min_nt (DECL_STMT
, copy_to_permanent (declarator
),
6026 copy_to_permanent (declspecs
),
6031 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6032 /* Tell the back-end to use or not use .common as appropriate. If we say
6033 -fconserve-space, we want this to save .data space, at the expense of
6034 wrong semantics. If we say -fno-conserve-space, we want this to
6035 produce errors about redefs; to do this we force variables into the
6037 DECL_COMMON (tem
) = flag_conserve_space
|| ! TREE_PUBLIC (tem
);
6040 if (! processing_template_decl
)
6043 /* Corresponding pop_obstacks is done in `cp_finish_decl'. */
6044 push_obstacks_nochange ();
6047 /* We have no way of knowing whether the initializer will need to be
6048 evaluated at run-time or not until we've parsed it, so let's just put
6049 it in the permanent obstack. (jason) */
6051 && ! (TREE_CODE (tem
) == PARM_DECL
6052 || (TREE_READONLY (tem
)
6053 && (TREE_CODE (tem
) == VAR_DECL
6054 || TREE_CODE (tem
) == FIELD_DECL
))))
6056 /* When parsing and digesting the initializer,
6057 use temporary storage. Do this even if we will ignore the value. */
6058 if (toplevel_bindings_p () && debug_temp_inits
)
6060 if (processing_template_decl
6061 || TYPE_NEEDS_CONSTRUCTING (type
)
6062 || TREE_CODE (type
) == REFERENCE_TYPE
)
6063 /* In this case, the initializer must lay down in permanent
6064 storage, since it will be saved until `finish_file' is run. */
6067 temporary_allocation ();
6079 tree type
= TREE_TYPE (decl
);
6080 int initialized
= (DECL_INITIAL (decl
) != NULL_TREE
);
6082 /* If this type of object needs a cleanup, and control may
6083 jump past it, make a new binding level so that it is cleaned
6084 up only when it is initialized first. */
6085 if (TYPE_NEEDS_DESTRUCTOR (type
)
6086 && current_binding_level
->more_cleanups_ok
== 0)
6087 pushlevel_temporary (1);
6090 /* Is it valid for this decl to have an initializer at all?
6091 If not, set INITIALIZED to zero, which will indirectly
6092 tell `cp_finish_decl' to ignore the initializer once it is parsed. */
6094 /* Don't allow initializations for incomplete types except for
6095 arrays which might be completed by the initialization. */
6096 if (type
== error_mark_node
)
6097 ; /* Don't complain again. */
6098 else if (TYPE_SIZE (complete_type (type
)) != NULL_TREE
)
6099 ; /* A complete type is ok. */
6100 else if (TREE_CODE (type
) != ARRAY_TYPE
)
6102 cp_error ("variable `%#D' has initializer but incomplete type",
6106 else if (TYPE_SIZE (complete_type (TREE_TYPE (type
))) == NULL_TREE
)
6108 if (DECL_LANG_SPECIFIC (decl
) && DECL_TEMPLATE_INFO (decl
))
6109 cp_error ("elements of array `%#D' have incomplete type", decl
);
6110 /* else we already gave an error in start_decl. */
6116 && TREE_CODE (decl
) != TYPE_DECL
6117 && TREE_CODE (decl
) != TEMPLATE_DECL
6118 && IS_AGGR_TYPE (type
) && ! DECL_EXTERNAL (decl
))
6120 if ((! processing_template_decl
|| ! uses_template_parms (type
))
6121 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
6123 cp_error ("aggregate `%#D' has incomplete type and cannot be initialized",
6125 /* Change the type so that assemble_variable will give
6126 DECL an rtl we can live with: (mem (const_int 0)). */
6127 TREE_TYPE (decl
) = error_mark_node
;
6128 type
= error_mark_node
;
6132 /* If any base type in the hierarchy of TYPE needs a constructor,
6133 then we set initialized to 1. This way any nodes which are
6134 created for the purposes of initializing this aggregate
6135 will live as long as it does. This is necessary for global
6136 aggregates which do not have their initializers processed until
6137 the end of the file. */
6138 initialized
= TYPE_NEEDS_CONSTRUCTING (type
);
6143 /* We don't do this yet for GNU C++. */
6144 /* For a local variable, define the RTL now. */
6145 if (! toplevel_bindings_p ()
6146 /* But not if this is a duplicate decl
6147 and we preserved the rtl from the previous one
6148 (which may or may not happen). */
6149 && DECL_RTL (tem
) == NULL_RTX
)
6151 if (TYPE_SIZE (TREE_TYPE (tem
)) != NULL_TREE
)
6153 else if (TREE_CODE (TREE_TYPE (tem
)) == ARRAY_TYPE
6154 && DECL_INITIAL (tem
) != NULL_TREE
)
6160 DECL_INITIAL (decl
) = NULL_TREE
;
6163 /* Handle initialization of references.
6164 These three arguments from from `cp_finish_decl', and have the
6165 same meaning here that they do there.
6167 Quotes on semantics can be found in ARM 8.4.3. */
6170 grok_reference_init (decl
, type
, init
, cleanupp
)
6171 tree decl
, type
, init
;
6176 if (init
== NULL_TREE
)
6178 if ((DECL_LANG_SPECIFIC (decl
) == 0
6179 || DECL_IN_AGGR_P (decl
) == 0)
6180 && ! DECL_THIS_EXTERN (decl
))
6182 cp_error ("`%D' declared as reference but not initialized", decl
);
6183 if (TREE_CODE (decl
) == VAR_DECL
)
6184 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6189 if (init
== error_mark_node
)
6192 if (TREE_CODE (type
) == REFERENCE_TYPE
6193 && TREE_CODE (init
) == CONSTRUCTOR
)
6195 cp_error ("ANSI C++ forbids use of initializer list to initialize reference `%D'", decl
);
6199 if (TREE_TYPE (init
) && TREE_CODE (TREE_TYPE (init
)) == UNKNOWN_TYPE
)
6200 /* decay_conversion is probably wrong for references to functions. */
6201 init
= decay_conversion (instantiate_type (TREE_TYPE (type
), init
, 1));
6203 if (TREE_CODE (init
) == TREE_LIST
)
6204 init
= build_compound_expr (init
);
6206 if (TREE_CODE (TREE_TYPE (init
)) == REFERENCE_TYPE
)
6207 init
= convert_from_reference (init
);
6209 if (TREE_CODE (TREE_TYPE (type
)) != ARRAY_TYPE
6210 && TREE_CODE (TREE_TYPE (init
)) == ARRAY_TYPE
)
6212 /* Note: default conversion is only called in very special cases. */
6213 init
= default_conversion (init
);
6216 tmp
= convert_to_reference
6217 (type
, init
, CONV_IMPLICIT
,
6218 LOOKUP_SPECULATIVELY
|LOOKUP_NORMAL
|DIRECT_BIND
, decl
);
6220 if (tmp
== error_mark_node
)
6222 else if (tmp
!= NULL_TREE
)
6225 DECL_INITIAL (decl
) = save_expr (init
);
6229 cp_error ("cannot initialize `%T' from `%T'", type
, TREE_TYPE (init
));
6233 /* ?? Can this be optimized in some cases to
6234 hand back the DECL_INITIAL slot?? */
6235 if (TYPE_SIZE (TREE_TYPE (type
)))
6237 init
= convert_from_reference (decl
);
6238 if (TREE_PERMANENT (decl
))
6239 init
= copy_to_permanent (init
);
6240 SET_DECL_REFERENCE_SLOT (decl
, init
);
6243 if (TREE_STATIC (decl
) && ! TREE_CONSTANT (DECL_INITIAL (decl
)))
6245 expand_static_init (decl
, DECL_INITIAL (decl
));
6246 DECL_INITIAL (decl
) = NULL_TREE
;
6251 if (TREE_CODE (decl
) == VAR_DECL
)
6252 SET_DECL_REFERENCE_SLOT (decl
, error_mark_node
);
6256 /* Fill in DECL_INITIAL with some magical value to prevent expand_decl from
6257 mucking with forces it does not comprehend (i.e. initialization with a
6258 constructor). If we are at global scope and won't go into COMMON, fill
6259 it in with a dummy CONSTRUCTOR to force the variable into .data;
6260 otherwise we can use error_mark_node. */
6263 obscure_complex_init (decl
, init
)
6266 if (! flag_no_inline
&& TREE_STATIC (decl
))
6268 if (extract_init (decl
, init
))
6272 #if ! defined (ASM_OUTPUT_BSS) && ! defined (ASM_OUTPUT_ALIGNED_BSS)
6273 if (toplevel_bindings_p () && ! DECL_COMMON (decl
))
6274 DECL_INITIAL (decl
) = build (CONSTRUCTOR
, TREE_TYPE (decl
), NULL_TREE
,
6278 DECL_INITIAL (decl
) = error_mark_node
;
6283 /* Finish processing of a declaration;
6284 install its line number and initial value.
6285 If the length of an array type is not known before,
6286 it must be determined now, from the initial value, or it is an error.
6288 Call `pop_obstacks' iff NEED_POP is nonzero.
6290 For C++, `cp_finish_decl' must be fairly evasive: it must keep initializers
6291 for aggregates that have constructors alive on the permanent obstack,
6292 so that the global initializing functions can be written at the end.
6294 INIT0 holds the value of an initializer that should be allowed to escape
6297 FLAGS is LOOKUP_ONLYCONVERTING is the = init syntax was used, else 0
6298 if the (init) syntax was used.
6300 For functions that take default parameters, DECL points to its
6301 "maximal" instantiation. `cp_finish_decl' must then also declared its
6302 subsequently lower and lower forms of instantiation, checking for
6303 ambiguity as it goes. This can be sped up later. */
6306 cp_finish_decl (decl
, init
, asmspec_tree
, need_pop
, flags
)
6313 tree cleanup
= NULL_TREE
, ttype
;
6315 int temporary
= allocation_temporary_p ();
6316 char *asmspec
= NULL
;
6317 int was_readonly
= 0;
6318 int already_used
= 0;
6320 /* If this is 0, then we did not change obstacks. */
6324 error ("assignment (not initialization) in declaration");
6328 /* If a name was specified, get the string. */
6330 asmspec
= TREE_STRING_POINTER (asmspec_tree
);
6332 /* If the type of the thing we are declaring either has
6333 a constructor, or has a virtual function table pointer,
6334 AND its initialization was accepted by `start_decl',
6335 then we stayed on the permanent obstack through the
6336 declaration, otherwise, changed obstacks as GCC would. */
6338 type
= TREE_TYPE (decl
);
6340 if (type
== error_mark_node
)
6342 if (toplevel_bindings_p () && temporary
)
6343 end_temporary_allocation ();
6348 if (processing_template_decl
)
6350 if (init
&& DECL_INITIAL (decl
))
6351 DECL_INITIAL (decl
) = init
;
6352 if (minimal_parse_mode
&& ! DECL_ARTIFICIAL (decl
))
6354 tree stmt
= DECL_VINDEX (decl
);
6355 DECL_VINDEX (decl
) = NULL_TREE
;
6356 TREE_OPERAND (stmt
, 2) = copy_to_permanent (init
);
6362 /* Take care of TYPE_DECLs up front. */
6363 if (TREE_CODE (decl
) == TYPE_DECL
)
6365 if (init
&& DECL_INITIAL (decl
))
6367 /* typedef foo = bar; store the type of bar as the type of foo. */
6368 TREE_TYPE (decl
) = type
= TREE_TYPE (init
);
6369 DECL_INITIAL (decl
) = init
= NULL_TREE
;
6371 if (type
!= error_mark_node
6372 && IS_AGGR_TYPE (type
) && DECL_NAME (decl
))
6374 if (TREE_TYPE (DECL_NAME (decl
)) && TREE_TYPE (decl
) != type
)
6375 cp_warning ("shadowing previous type declaration of `%#D'", decl
);
6376 set_identifier_type_value (DECL_NAME (decl
), type
);
6377 CLASSTYPE_GOT_SEMICOLON (type
) = 1;
6379 GNU_xref_decl (current_function_decl
, decl
);
6381 /* If we have installed this as the canonical typedef for this
6382 type, and that type has not been defined yet, delay emitting
6383 the debug informaion for it, as we will emit it later. */
6384 if (TYPE_MAIN_DECL (TREE_TYPE (decl
)) == decl
6385 && TYPE_SIZE (TREE_TYPE (decl
)) == NULL_TREE
)
6386 TYPE_DECL_SUPPRESS_DEBUG (decl
) = 1;
6388 rest_of_decl_compilation (decl
, NULL_PTR
,
6389 DECL_CONTEXT (decl
) == NULL_TREE
, at_eof
);
6392 if (TREE_CODE (decl
) != FUNCTION_DECL
)
6394 ttype
= target_type (type
);
6397 if (! DECL_EXTERNAL (decl
) && TREE_READONLY (decl
)
6398 && TYPE_NEEDS_CONSTRUCTING (type
))
6401 /* Currently, GNU C++ puts constants in text space, making them
6402 impossible to initialize. In the future, one would hope for
6403 an operating system which understood the difference between
6404 initialization and the running of a program. */
6406 TREE_READONLY (decl
) = 0;
6409 if (TREE_CODE (decl
) == FIELD_DECL
)
6411 if (init
&& init
!= error_mark_node
)
6412 my_friendly_assert (TREE_PERMANENT (init
), 147);
6416 /* This must override the asm specifier which was placed
6417 by grokclassfn. Lay this out fresh. */
6418 DECL_RTL (TREE_TYPE (decl
)) = NULL_RTX
;
6419 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
6420 make_decl_rtl (decl
, asmspec
, 0);
6423 /* If `start_decl' didn't like having an initialization, ignore it now. */
6424 else if (init
!= NULL_TREE
&& DECL_INITIAL (decl
) == NULL_TREE
)
6426 else if (DECL_EXTERNAL (decl
))
6428 else if (TREE_CODE (type
) == REFERENCE_TYPE
6429 || (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE_REFERENCE (type
)))
6431 if (TREE_STATIC (decl
))
6432 make_decl_rtl (decl
, NULL_PTR
,
6433 toplevel_bindings_p ()
6434 || pseudo_global_level_p ());
6435 grok_reference_init (decl
, type
, init
, &cleanup
);
6439 GNU_xref_decl (current_function_decl
, decl
);
6441 if (TREE_CODE (decl
) == FIELD_DECL
)
6443 else if (TREE_CODE (decl
) == CONST_DECL
)
6445 my_friendly_assert (TREE_CODE (decl
) != REFERENCE_TYPE
, 148);
6447 DECL_INITIAL (decl
) = init
;
6449 /* This will keep us from needing to worry about our obstacks. */
6450 my_friendly_assert (init
!= NULL_TREE
, 149);
6455 if (TYPE_HAS_CONSTRUCTOR (type
) || TYPE_NEEDS_CONSTRUCTING (type
))
6457 if (TREE_CODE (type
) == ARRAY_TYPE
)
6458 init
= digest_init (type
, init
, (tree
*) 0);
6459 else if (TREE_CODE (init
) == CONSTRUCTOR
)
6461 if (TYPE_NON_AGGREGATE_CLASS (type
))
6463 cp_error ("`%D' must be initialized by constructor, not by `{...}'",
6465 init
= error_mark_node
;
6468 goto dont_use_constructor
;
6473 dont_use_constructor
:
6474 if (TREE_CODE (init
) != TREE_VEC
)
6475 init
= store_init_value (decl
, init
);
6479 /* We must hide the initializer so that expand_decl
6480 won't try to do something it does not understand. */
6481 init
= obscure_complex_init (decl
, init
);
6483 else if (DECL_EXTERNAL (decl
))
6485 else if (TREE_CODE_CLASS (TREE_CODE (type
)) == 't'
6486 && (IS_AGGR_TYPE (type
) || TYPE_NEEDS_CONSTRUCTING (type
)))
6489 while (TREE_CODE (ctype
) == ARRAY_TYPE
)
6490 ctype
= TREE_TYPE (ctype
);
6491 if (! TYPE_NEEDS_CONSTRUCTING (ctype
))
6493 if (CLASSTYPE_READONLY_FIELDS_NEED_INIT (ctype
))
6494 cp_error ("structure `%D' with uninitialized const members", decl
);
6495 if (CLASSTYPE_REF_FIELDS_NEED_INIT (ctype
))
6496 cp_error ("structure `%D' with uninitialized reference members",
6500 if (TREE_CODE (decl
) == VAR_DECL
6501 && !DECL_INITIAL (decl
)
6502 && !TYPE_NEEDS_CONSTRUCTING (type
)
6503 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
6504 cp_error ("uninitialized const `%D'", decl
);
6506 if (TYPE_SIZE (type
) != NULL_TREE
6507 && TYPE_NEEDS_CONSTRUCTING (type
))
6508 init
= obscure_complex_init (decl
, NULL_TREE
);
6510 else if (TREE_CODE (decl
) == VAR_DECL
6511 && TREE_CODE (type
) != REFERENCE_TYPE
6512 && (TYPE_READONLY (type
) || TREE_READONLY (decl
)))
6514 /* ``Unless explicitly declared extern, a const object does not have
6515 external linkage and must be initialized. ($8.4; $12.1)'' ARM 7.1.6
6516 However, if it's `const int foo = 1; const int foo;', don't complain
6517 about the second decl, since it does have an initializer before.
6518 We deliberately don't complain about arrays, because they're
6519 supposed to be initialized by a constructor. */
6520 if (! DECL_INITIAL (decl
)
6521 && TREE_CODE (type
) != ARRAY_TYPE
6522 && (!pedantic
|| !current_class_type
))
6523 cp_error ("uninitialized const `%#D'", decl
);
6526 /* For top-level declaration, the initial value was read in
6527 the temporary obstack. MAXINDEX, rtl, etc. to be made below
6528 must go in the permanent obstack; but don't discard the
6529 temporary data yet. */
6531 if (toplevel_bindings_p () && temporary
)
6532 end_temporary_allocation ();
6534 /* Deduce size of array from initialization, if not already known. */
6536 if (TREE_CODE (type
) == ARRAY_TYPE
6537 && TYPE_DOMAIN (type
) == NULL_TREE
6538 && TREE_CODE (decl
) != TYPE_DECL
)
6541 = (TREE_STATIC (decl
)
6542 /* Even if pedantic, an external linkage array
6543 may have incomplete type at first. */
6544 ? pedantic
&& ! DECL_EXTERNAL (decl
)
6545 : !DECL_EXTERNAL (decl
));
6546 tree initializer
= init
? init
: DECL_INITIAL (decl
);
6547 int failure
= complete_array_type (type
, initializer
, do_default
);
6550 cp_error ("initializer fails to determine size of `%D'", decl
);
6555 cp_error ("array size missing in `%D'", decl
);
6556 /* If a `static' var's size isn't known, make it extern as
6557 well as static, so it does not get allocated. If it's not
6558 `static', then don't mark it extern; finish_incomplete_decl
6559 will give it a default size and it will get allocated. */
6560 else if (!pedantic
&& TREE_STATIC (decl
) && !TREE_PUBLIC (decl
))
6561 DECL_EXTERNAL (decl
) = 1;
6564 if (pedantic
&& TYPE_DOMAIN (type
) != NULL_TREE
6565 && tree_int_cst_lt (TYPE_MAX_VALUE (TYPE_DOMAIN (type
)),
6567 cp_error ("zero-size array `%D'", decl
);
6569 layout_decl (decl
, 0);
6572 if (TREE_CODE (decl
) == VAR_DECL
)
6574 if (DECL_SIZE (decl
) == NULL_TREE
6575 && TYPE_SIZE (complete_type (TREE_TYPE (decl
))) != NULL_TREE
)
6576 layout_decl (decl
, 0);
6578 if (TREE_STATIC (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
6580 /* A static variable with an incomplete type:
6581 that is an error if it is initialized.
6582 Otherwise, let it through, but if it is not `extern'
6583 then it may cause an error message later. */
6584 if (DECL_INITIAL (decl
) != NULL_TREE
)
6585 cp_error ("storage size of `%D' isn't known", decl
);
6588 else if (!DECL_EXTERNAL (decl
) && DECL_SIZE (decl
) == NULL_TREE
)
6590 /* An automatic variable with an incomplete type: that is an error.
6591 Don't talk about array types here, since we took care of that
6592 message in grokdeclarator. */
6593 cp_error ("storage size of `%D' isn't known", decl
);
6594 TREE_TYPE (decl
) = error_mark_node
;
6596 else if (!DECL_EXTERNAL (decl
) && IS_AGGR_TYPE (ttype
))
6597 /* Let debugger know it should output info for this type. */
6598 note_debug_info_needed (ttype
);
6600 if (TREE_STATIC (decl
) && DECL_CONTEXT (decl
)
6601 && TREE_CODE_CLASS (TREE_CODE (DECL_CONTEXT (decl
))) == 't')
6602 note_debug_info_needed (DECL_CONTEXT (decl
));
6604 if ((DECL_EXTERNAL (decl
) || TREE_STATIC (decl
))
6605 && DECL_SIZE (decl
) != NULL_TREE
6606 && ! TREE_CONSTANT (DECL_SIZE (decl
)))
6608 if (TREE_CODE (DECL_SIZE (decl
)) == INTEGER_CST
)
6609 constant_expression_warning (DECL_SIZE (decl
));
6611 cp_error ("storage size of `%D' isn't constant", decl
);
6614 if (! DECL_EXTERNAL (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
6615 /* Cleanups for static variables are handled by `finish_file'. */
6616 && ! TREE_STATIC (decl
))
6618 int yes
= suspend_momentary ();
6619 cleanup
= maybe_build_cleanup (decl
);
6620 resume_momentary (yes
);
6623 /* PARM_DECLs get cleanups, too. */
6624 else if (TREE_CODE (decl
) == PARM_DECL
&& TYPE_NEEDS_DESTRUCTOR (type
))
6627 end_temporary_allocation ();
6628 cleanup
= maybe_build_cleanup (decl
);
6630 resume_temporary_allocation ();
6633 /* Output the assembler code and/or RTL code for variables and functions,
6634 unless the type is an undefined structure or union.
6635 If not, it will get done when the type is completed. */
6637 was_incomplete
= (DECL_SIZE (decl
) == NULL_TREE
);
6639 if (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == FUNCTION_DECL
6640 || TREE_CODE (decl
) == RESULT_DECL
)
6642 /* ??? FIXME: What about nested classes? */
6643 int toplev
= toplevel_bindings_p () || pseudo_global_level_p ();
6645 = (TREE_STATIC (decl
) && TYPE_NEEDS_DESTRUCTOR (type
)
6646 && allocation_temporary_p ());
6649 end_temporary_allocation ();
6651 /* Extern inline function static data has external linkage. */
6652 if (TREE_CODE (decl
) == VAR_DECL
6653 && TREE_STATIC (decl
)
6654 && current_function_decl
6655 && DECL_CONTEXT (decl
) == current_function_decl
6656 && DECL_THIS_INLINE (current_function_decl
)
6657 && TREE_PUBLIC (current_function_decl
))
6659 if (DECL_INTERFACE_KNOWN (current_function_decl
))
6661 TREE_PUBLIC (decl
) = 1;
6662 DECL_EXTERNAL (decl
) = DECL_EXTERNAL (current_function_decl
);
6664 /* We can only do this if we can use common or weak, and we
6665 can't if it has been initialized and we don't support weak. */
6666 else if (DECL_INITIAL (decl
) == NULL_TREE
6667 || DECL_INITIAL (decl
) == error_mark_node
)
6669 TREE_PUBLIC (decl
) = 1;
6670 DECL_COMMON (decl
) = 1;
6673 make_decl_one_only (decl
);
6675 if (TREE_PUBLIC (decl
))
6676 DECL_ASSEMBLER_NAME (decl
)
6677 = build_static_name (current_function_decl
, DECL_NAME (decl
));
6678 else if (! DECL_ARTIFICIAL (decl
))
6679 cp_warning_at ("sorry: semantics of inline function static data `%#D' are wrong (you'll wind up with multiple copies)", decl
);
6682 if (TREE_CODE (decl
) == VAR_DECL
&& DECL_VIRTUAL_P (decl
))
6683 make_decl_rtl (decl
, NULL_PTR
, toplev
);
6684 else if (TREE_CODE (decl
) == VAR_DECL
6685 && TREE_READONLY (decl
)
6686 && DECL_INITIAL (decl
) != NULL_TREE
6687 && DECL_INITIAL (decl
) != error_mark_node
6688 && ! EMPTY_CONSTRUCTOR_P (DECL_INITIAL (decl
)))
6690 DECL_INITIAL (decl
) = save_expr (DECL_INITIAL (decl
));
6693 DECL_ASSEMBLER_NAME (decl
) = get_identifier (asmspec
);
6696 && TREE_STATIC (decl
)
6697 && ! TREE_SIDE_EFFECTS (decl
)
6698 && ! TREE_PUBLIC (decl
)
6699 && ! DECL_EXTERNAL (decl
)
6700 && ! TYPE_NEEDS_DESTRUCTOR (type
)
6701 && DECL_MODE (decl
) != BLKmode
)
6703 /* If this variable is really a constant, then fill its DECL_RTL
6704 slot with something which won't take up storage.
6705 If something later should take its address, we can always give
6706 it legitimate RTL at that time. */
6707 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
6708 store_expr (DECL_INITIAL (decl
), DECL_RTL (decl
), 0);
6709 TREE_ASM_WRITTEN (decl
) = 1;
6711 else if (toplev
&& ! TREE_PUBLIC (decl
))
6713 /* If this is a static const, change its apparent linkage
6714 if it belongs to a #pragma interface. */
6715 if (!interface_unknown
)
6717 TREE_PUBLIC (decl
) = 1;
6718 DECL_EXTERNAL (decl
) = interface_only
;
6720 make_decl_rtl (decl
, asmspec
, toplev
);
6723 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
6725 else if (TREE_CODE (decl
) == VAR_DECL
6726 && DECL_LANG_SPECIFIC (decl
)
6727 && DECL_IN_AGGR_P (decl
))
6729 if (TREE_STATIC (decl
))
6731 if (init
== NULL_TREE
6732 #ifdef DEFAULT_STATIC_DEFS
6733 /* If this code is dead, then users must
6734 explicitly declare static member variables
6735 outside the class def'n as well. */
6736 && TYPE_NEEDS_CONSTRUCTING (type
)
6740 DECL_EXTERNAL (decl
) = 1;
6741 make_decl_rtl (decl
, asmspec
, 1);
6744 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
6747 /* Just a constant field. Should not need any rtl. */
6751 rest_of_decl_compilation (decl
, asmspec
, toplev
, at_eof
);
6754 resume_temporary_allocation ();
6756 if (type
!= error_mark_node
6757 && TYPE_LANG_SPECIFIC (type
)
6758 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
6759 abstract_virtuals_error (decl
, type
);
6760 else if ((TREE_CODE (type
) == FUNCTION_TYPE
6761 || TREE_CODE (type
) == METHOD_TYPE
)
6762 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
6763 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (type
)))
6764 abstract_virtuals_error (decl
, TREE_TYPE (type
));
6766 if (TYPE_LANG_SPECIFIC (type
) && IS_SIGNATURE (type
))
6767 signature_error (decl
, type
);
6768 else if ((TREE_CODE (type
) == FUNCTION_TYPE
6769 || TREE_CODE (type
) == METHOD_TYPE
)
6770 && TYPE_LANG_SPECIFIC (TREE_TYPE (type
))
6771 && IS_SIGNATURE (TREE_TYPE (type
)))
6772 signature_error (decl
, TREE_TYPE (type
));
6774 if (TREE_CODE (decl
) == FUNCTION_DECL
)
6776 else if (DECL_EXTERNAL (decl
)
6777 && ! (DECL_LANG_SPECIFIC (decl
)
6778 && DECL_NOT_REALLY_EXTERN (decl
)))
6781 DECL_INITIAL (decl
) = init
;
6783 else if (TREE_STATIC (decl
) && type
!= error_mark_node
)
6785 /* Cleanups for static variables are handled by `finish_file'. */
6786 if (TYPE_NEEDS_CONSTRUCTING (type
) || init
!= NULL_TREE
6787 || TYPE_NEEDS_DESTRUCTOR (type
))
6788 expand_static_init (decl
, init
);
6792 /* This is a declared decl which must live until the
6793 end of the binding contour. It may need a cleanup. */
6795 /* Recompute the RTL of a local array now
6796 if it used to be an incomplete type. */
6797 if (was_incomplete
&& ! TREE_STATIC (decl
))
6799 /* If we used it already as memory, it must stay in memory. */
6800 TREE_ADDRESSABLE (decl
) = TREE_USED (decl
);
6801 /* If it's still incomplete now, no init will save it. */
6802 if (DECL_SIZE (decl
) == NULL_TREE
)
6803 DECL_INITIAL (decl
) = NULL_TREE
;
6806 else if (! TREE_ASM_WRITTEN (decl
)
6807 && (TYPE_SIZE (type
) != NULL_TREE
6808 || TREE_CODE (type
) == ARRAY_TYPE
))
6810 /* Do this here, because we did not expand this decl's
6811 rtl in start_decl. */
6812 if (DECL_RTL (decl
) == NULL_RTX
)
6816 /* XXX: Why don't we use decl here? */
6817 /* Ans: Because it was already expanded? */
6818 if (! expand_decl_cleanup (NULL_TREE
, cleanup
))
6819 cp_error ("parser lost in parsing declaration of `%D'",
6821 /* Cleanup used up here. */
6822 cleanup
= NULL_TREE
;
6826 if (current_binding_level
->is_for_scope
)
6828 struct binding_level
*outer
= current_binding_level
->level_chain
;
6830 /* Check to see if the same name is already bound at
6831 the outer level, either because it was directly declared,
6832 or because a dead for-decl got preserved. In either case,
6833 the code would not have been valid under the ARM
6834 scope rules, so clear is_for_scope for the
6835 current_binding_level.
6837 Otherwise, we need to preserve the temp slot for decl
6838 to last into the outer binding level. */
6840 int handling_dead_for_vars
= 0;
6841 tree link
= outer
->names
;
6842 for (; ; link
= TREE_CHAIN (link
))
6844 if (link
== NULL
&& handling_dead_for_vars
== 0)
6846 link
= outer
->dead_vars_from_for
;
6847 handling_dead_for_vars
= 1;
6851 if (DECL_IN_MEMORY_P (decl
))
6852 preserve_temp_slots (DECL_RTL (decl
));
6855 if (DECL_NAME (link
) == DECL_NAME (decl
))
6857 if (handling_dead_for_vars
)
6860 = purpose_member (DECL_NAME (decl
),
6861 current_binding_level
->shadowed
);
6862 if (shadowing
&& TREE_VALUE (shadowing
) == link
)
6863 TREE_VALUE (shadowing
)
6864 = DECL_SHADOWED_FOR_VAR (link
);
6866 current_binding_level
->is_for_scope
= 0;
6872 expand_start_target_temps ();
6874 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
6876 /* Compute and store the initial value. */
6877 expand_decl_init (decl
);
6878 already_used
= TREE_USED (decl
) || TREE_USED (type
);
6880 if (init
|| TYPE_NEEDS_CONSTRUCTING (type
))
6882 emit_line_note (DECL_SOURCE_FILE (decl
),
6883 DECL_SOURCE_LINE (decl
));
6884 expand_aggr_init (decl
, init
, 0, flags
);
6887 /* Set this to 0 so we can tell whether an aggregate which
6888 was initialized was ever used. Don't do this if it has a
6889 destructor, so we don't complain about the 'resource
6890 allocation is initialization' idiom. */
6892 if (TYPE_NEEDS_CONSTRUCTING (type
)
6894 && cleanup
== NULL_TREE
6895 && DECL_NAME (decl
))
6896 TREE_USED (decl
) = 0;
6899 TREE_USED (decl
) = 1;
6902 /* Cleanup any temporaries needed for the initial value. */
6903 expand_end_target_temps ();
6905 if (DECL_SIZE (decl
) && type
!= error_mark_node
)
6907 /* Store the cleanup, if there was one. */
6910 if (! expand_decl_cleanup (decl
, cleanup
))
6911 cp_error ("parser lost in parsing declaration of `%D'",
6918 /* Undo call to `pushclass' that was done in `start_decl'
6919 due to initialization of qualified member variable.
6920 I.e., Foo::x = 10; */
6922 tree context
= DECL_REAL_CONTEXT (decl
);
6924 && TREE_CODE_CLASS (TREE_CODE (context
)) == 't'
6925 && (TREE_CODE (decl
) == VAR_DECL
6926 /* We also have a pushclass done that we need to undo here
6927 if we're at top level and declare a method. */
6928 || TREE_CODE (decl
) == FUNCTION_DECL
)
6929 /* If size hasn't been set, we're still defining it,
6930 and therefore inside the class body; don't pop
6931 the binding level.. */
6932 && TYPE_SIZE (context
) != NULL_TREE
6933 && context
== current_class_type
)
6940 /* If requested, warn about definitions of large data objects. */
6942 if (warn_larger_than
6943 && ! processing_template_decl
6944 && (TREE_CODE (decl
) == VAR_DECL
|| TREE_CODE (decl
) == PARM_DECL
)
6945 && !DECL_EXTERNAL (decl
))
6947 register tree decl_size
= DECL_SIZE (decl
);
6949 if (decl_size
&& TREE_CODE (decl_size
) == INTEGER_CST
)
6951 unsigned units
= TREE_INT_CST_LOW (decl_size
) / BITS_PER_UNIT
;
6953 if (units
> larger_than_size
)
6954 warning_with_decl (decl
, "size of `%s' is %u bytes", units
);
6960 /* Resume permanent allocation, if not within a function. */
6961 /* The corresponding push_obstacks_nochange is in start_decl,
6962 start_method, groktypename, and in grokfield. */
6967 TREE_READONLY (decl
) = 1;
6970 /* This is here for a midend callback from c-common.c */
6973 finish_decl (decl
, init
, asmspec_tree
)
6977 cp_finish_decl (decl
, init
, asmspec_tree
, 1, 0);
6981 expand_static_init (decl
, init
)
6985 tree oldstatic
= value_member (decl
, static_aggregates
);
6989 if (TREE_PURPOSE (oldstatic
) && init
!= NULL_TREE
)
6990 cp_error ("multiple initializations given for `%D'", decl
);
6992 else if (! toplevel_bindings_p () && ! pseudo_global_level_p ())
6994 /* Emit code to perform this initialization but once. */
6997 /* Remember this information until end of file. */
6998 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7000 /* Emit code to perform this initialization but once. */
7001 temp
= get_temp_name (integer_type_node
, 1);
7002 rest_of_decl_compilation (temp
, NULL_PTR
, 0, 0);
7003 expand_start_cond (build_binary_op (EQ_EXPR
, temp
,
7004 integer_zero_node
, 1), 0);
7005 expand_start_target_temps ();
7007 expand_assignment (temp
, integer_one_node
, 0, 0);
7008 if (TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
))
7009 || (init
&& TREE_CODE (init
) == TREE_LIST
))
7011 expand_aggr_init (decl
, init
, 0, 0);
7012 do_pending_stack_adjust ();
7015 expand_assignment (decl
, init
, 0, 0);
7017 /* Cleanup any temporaries needed for the initial value. */
7018 expand_end_target_temps ();
7020 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7022 tree cleanup
, fcall
;
7023 static tree Atexit
= 0;
7026 tree atexit_fndecl
, PFV
, pfvlist
;
7027 /* Remember this information until end of file. */
7028 push_obstacks (&permanent_obstack
, &permanent_obstack
);
7029 PFV
= build_pointer_type (build_function_type
7030 (void_type_node
, void_list_node
));
7032 pfvlist
= tree_cons (NULL_TREE
, PFV
, void_list_node
);
7034 push_lang_context (lang_name_c
);
7036 = builtin_function ("atexit",
7037 build_function_type (void_type_node
,
7039 NOT_BUILT_IN
, NULL_PTR
);
7040 assemble_external (atexit_fndecl
);
7041 Atexit
= default_conversion (atexit_fndecl
);
7042 pop_lang_context ();
7046 cleanup
= start_anon_func ();
7047 expand_expr_stmt (build_cleanup (decl
));
7049 mark_addressable (cleanup
);
7050 cleanup
= build_unary_op (ADDR_EXPR
, cleanup
, 0);
7051 fcall
= build_function_call (Atexit
, expr_tree_cons (NULL_TREE
, cleanup
, NULL_TREE
));
7052 expand_expr_stmt (fcall
);
7056 if (TYPE_NEEDS_DESTRUCTOR (TREE_TYPE (decl
)))
7058 static_aggregates
= perm_tree_cons (temp
, decl
, static_aggregates
);
7059 TREE_STATIC (static_aggregates
) = 1;
7062 /* Resume old (possibly temporary) allocation. */
7067 /* This code takes into account memory allocation
7068 policy of `start_decl'. Namely, if TYPE_NEEDS_CONSTRUCTING
7069 does not hold for this object, then we must make permanent
7070 the storage currently in the temporary obstack. */
7071 if (! TYPE_NEEDS_CONSTRUCTING (TREE_TYPE (decl
)))
7072 preserve_initializer ();
7073 static_aggregates
= perm_tree_cons (init
, decl
, static_aggregates
);
7077 /* Make TYPE a complete type based on INITIAL_VALUE.
7078 Return 0 if successful, 1 if INITIAL_VALUE can't be deciphered,
7079 2 if there was no information (in which case assume 1 if DO_DEFAULT). */
7082 complete_array_type (type
, initial_value
, do_default
)
7083 tree type
, initial_value
;
7086 register tree maxindex
= NULL_TREE
;
7091 /* Note MAXINDEX is really the maximum index,
7092 one less than the size. */
7093 if (TREE_CODE (initial_value
) == STRING_CST
)
7096 = int_size_in_bytes (TREE_TYPE (TREE_TYPE (initial_value
)));
7097 maxindex
= build_int_2 ((TREE_STRING_LENGTH (initial_value
)
7100 else if (TREE_CODE (initial_value
) == CONSTRUCTOR
)
7102 tree elts
= CONSTRUCTOR_ELTS (initial_value
);
7103 maxindex
= size_binop (MINUS_EXPR
, integer_zero_node
, size_one_node
);
7104 for (; elts
; elts
= TREE_CHAIN (elts
))
7106 if (TREE_PURPOSE (elts
))
7107 maxindex
= TREE_PURPOSE (elts
);
7109 maxindex
= size_binop (PLUS_EXPR
, maxindex
, size_one_node
);
7111 maxindex
= copy_node (maxindex
);
7115 /* Make an error message unless that happened already. */
7116 if (initial_value
!= error_mark_node
)
7119 /* Prevent further error messages. */
7120 maxindex
= build_int_2 (0, 0);
7127 maxindex
= build_int_2 (0, 0);
7135 TYPE_DOMAIN (type
) = build_index_type (maxindex
);
7136 if (! TREE_TYPE (maxindex
))
7137 TREE_TYPE (maxindex
) = TYPE_DOMAIN (type
);
7139 itype
= TREE_TYPE (initial_value
);
7142 if (itype
&& !TYPE_DOMAIN (itype
))
7143 TYPE_DOMAIN (itype
) = TYPE_DOMAIN (type
);
7144 /* The type of the main variant should never be used for arrays
7145 of different sizes. It should only ever be completed with the
7146 size of the array. */
7147 if (! TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)))
7148 TYPE_DOMAIN (TYPE_MAIN_VARIANT (type
)) = TYPE_DOMAIN (type
);
7151 /* Lay out the type now that we can get the real answer. */
7158 /* Return zero if something is declared to be a member of type
7159 CTYPE when in the context of CUR_TYPE. STRING is the error
7160 message to print in that case. Otherwise, quietly return 1. */
7163 member_function_or_else (ctype
, cur_type
, string
)
7164 tree ctype
, cur_type
;
7167 if (ctype
&& ctype
!= cur_type
)
7169 error (string
, TYPE_NAME_STRING (ctype
));
7175 /* Subroutine of `grokdeclarator'. */
7177 /* Generate errors possibly applicable for a given set of specifiers.
7178 This is for ARM $7.1.2. */
7181 bad_specifiers (object
, type
, virtualp
, quals
, inlinep
, friendp
, raises
)
7184 int virtualp
, quals
, friendp
, raises
, inlinep
;
7187 cp_error ("`%D' declared as a `virtual' %s", object
, type
);
7189 cp_error ("`%D' declared as an `inline' %s", object
, type
);
7191 cp_error ("`const' and `volatile' function specifiers on `%D' invalid in %s declaration",
7194 cp_error_at ("invalid friend declaration", object
);
7196 cp_error_at ("invalid exception specifications", object
);
7199 /* CTYPE is class type, or null if non-class.
7200 TYPE is type this FUNCTION_DECL should have, either FUNCTION_TYPE
7202 DECLARATOR is the function's name.
7203 VIRTUALP is truthvalue of whether the function is virtual or not.
7204 FLAGS are to be passed through to `grokclassfn'.
7205 QUALS are qualifiers indicating whether the function is `const'
7207 RAISES is a list of exceptions that this function can raise.
7208 CHECK is 1 if we must find this method in CTYPE, 0 if we should
7209 not look, and -1 if we should not call `grokclassfn' at all. */
7212 grokfndecl (ctype
, type
, declarator
, orig_declarator
, virtualp
, flags
, quals
,
7213 raises
, attrlist
, check
, friendp
, publicp
, inlinep
, funcdef_flag
,
7217 tree orig_declarator
;
7219 enum overload_flags flags
;
7220 tree quals
, raises
, attrlist
;
7221 int check
, friendp
, publicp
, inlinep
, funcdef_flag
, template_count
;
7224 int staticp
= ctype
&& TREE_CODE (type
) == FUNCTION_TYPE
;
7228 cname
= TREE_CODE (TYPE_NAME (ctype
)) == TYPE_DECL
7229 ? TYPE_IDENTIFIER (ctype
) : TYPE_NAME (ctype
);
7235 type
= build_exception_variant (type
, raises
);
7238 decl
= build_lang_decl (FUNCTION_DECL
, declarator
, type
);
7239 /* propagate volatile out from type to decl */
7240 if (TYPE_VOLATILE (type
))
7241 TREE_THIS_VOLATILE (decl
) = 1;
7243 /* Should probably propagate const out from type to decl I bet (mrs). */
7246 DECL_STATIC_FUNCTION_P (decl
) = 1;
7247 DECL_CONTEXT (decl
) = ctype
;
7251 DECL_CLASS_CONTEXT (decl
) = ctype
;
7253 if (ctype
== NULL_TREE
&& ! strcmp (IDENTIFIER_POINTER (declarator
), "main"))
7256 error ("cannot declare `main' to be inline");
7258 error ("cannot declare `main' to be static");
7263 TREE_PUBLIC (decl
) = publicp
;
7266 DECL_INTERFACE_KNOWN (decl
) = 1;
7267 DECL_NOT_REALLY_EXTERN (decl
) = 1;
7271 DECL_THIS_INLINE (decl
) = DECL_INLINE (decl
) = 1;
7273 DECL_EXTERNAL (decl
) = 1;
7274 if (quals
!= NULL_TREE
&& TREE_CODE (type
) == FUNCTION_TYPE
)
7276 cp_error ("%smember function `%D' cannot have `%T' method qualifier",
7277 (ctype
? "static " : "non-"), decl
, TREE_VALUE (quals
));
7281 if (IDENTIFIER_OPNAME_P (DECL_NAME (decl
)))
7282 grok_op_properties (decl
, virtualp
, check
< 0);
7284 if (ctype
&& hack_decl_function_context (decl
))
7285 DECL_NO_STATIC_CHAIN (decl
) = 1;
7287 for (t
= TYPE_ARG_TYPES (TREE_TYPE (decl
)); t
; t
= TREE_CHAIN (t
))
7288 if (TREE_PURPOSE (t
)
7289 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
7291 add_defarg_fn (decl
);
7295 /* Caller will do the rest of this. */
7296 check_explicit_specialization (orig_declarator
, decl
,
7304 if (check
&& funcdef_flag
)
7305 DECL_INITIAL (decl
) = error_mark_node
;
7307 if (flags
== NO_SPECIAL
&& ctype
&& constructor_name (cname
) == declarator
)
7310 /* Just handle constructors here. We could do this
7311 inside the following if stmt, but I think
7312 that the code is more legible by breaking this
7313 case out. See comments below for what each of
7314 the following calls is supposed to do. */
7315 DECL_CONSTRUCTOR_P (decl
) = 1;
7317 grokclassfn (ctype
, declarator
, decl
, flags
, quals
);
7321 tmp
= check_classfn (ctype
, decl
);
7323 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
7324 tmp
= DECL_TEMPLATE_RESULT(tmp
);
7326 if (tmp
&& DECL_ARTIFICIAL (tmp
))
7327 cp_error ("definition of implicitly-declared `%D'", tmp
);
7328 if (tmp
&& duplicate_decls (decl
, tmp
))
7331 if (! grok_ctor_properties (ctype
, decl
))
7334 if (check
== 0 && ! current_function_decl
)
7336 tmp
= IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
));
7337 if (tmp
== NULL_TREE
)
7338 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
)) = decl
;
7339 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
7340 cp_error ("inconsistent declarations for `%D'", decl
);
7343 duplicate_decls (decl
, tmp
);
7345 /* avoid creating circularities. */
7346 DECL_CHAIN (decl
) = NULL_TREE
;
7348 make_decl_rtl (decl
, NULL_PTR
, 1);
7355 /* Function gets the ugly name, field gets the nice one.
7356 This call may change the type of the function (because
7357 of default parameters)! */
7358 if (ctype
!= NULL_TREE
)
7359 grokclassfn (ctype
, cname
, decl
, flags
, quals
);
7361 if (ctype
!= NULL_TREE
&& check
)
7363 tmp
= check_classfn (ctype
, decl
);
7365 if (tmp
&& TREE_CODE (tmp
) == TEMPLATE_DECL
)
7366 tmp
= DECL_TEMPLATE_RESULT(tmp
);
7368 if (tmp
&& DECL_STATIC_FUNCTION_P (tmp
)
7369 && TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
)
7371 /* Remove the `this' parm added by grokclassfn.
7372 XXX Isn't this done in start_function, too? */
7373 revert_static_member_fn (&decl
, NULL
, NULL
);
7374 last_function_parms
= TREE_CHAIN (last_function_parms
);
7376 if (tmp
&& DECL_ARTIFICIAL (tmp
))
7377 cp_error ("definition of implicitly-declared `%D'", tmp
);
7380 if (!duplicate_decls (decl
, tmp
))
7381 my_friendly_abort (892);
7386 if (ctype
== NULL_TREE
|| check
)
7389 /* Now install the declaration of this function so that others may
7390 find it (esp. its DECL_FRIENDLIST). Don't do this for local class
7392 if (! current_function_decl
)
7394 /* FIXME: this should only need to look at
7395 IDENTIFIER_GLOBAL_VALUE. */
7396 tmp
= lookup_name (DECL_ASSEMBLER_NAME (decl
), 0);
7397 if (tmp
== NULL_TREE
)
7398 IDENTIFIER_GLOBAL_VALUE (DECL_ASSEMBLER_NAME (decl
)) = decl
;
7399 else if (TREE_CODE (tmp
) != TREE_CODE (decl
))
7400 cp_error ("inconsistent declarations for `%D'", decl
);
7403 duplicate_decls (decl
, tmp
);
7405 /* avoid creating circularities. */
7406 DECL_CHAIN (decl
) = NULL_TREE
;
7410 cplus_decl_attributes (decl
, TREE_PURPOSE (attrlist
),
7411 TREE_VALUE (attrlist
));
7412 make_decl_rtl (decl
, NULL_PTR
, 1);
7416 DECL_VIRTUAL_P (decl
) = 1;
7417 if (DECL_VINDEX (decl
) == NULL_TREE
)
7418 DECL_VINDEX (decl
) = error_mark_node
;
7419 IDENTIFIER_VIRTUAL_P (DECL_NAME (decl
)) = 1;
7426 grokvardecl (type
, declarator
, specbits_in
, initialized
, constp
)
7429 RID_BIT_TYPE
*specbits_in
;
7434 RID_BIT_TYPE specbits
;
7436 specbits
= *specbits_in
;
7438 if (TREE_CODE (type
) == OFFSET_TYPE
)
7440 /* If you declare a static member so that it
7441 can be initialized, the code will reach here. */
7442 tree basetype
= TYPE_OFFSET_BASETYPE (type
);
7443 type
= TREE_TYPE (type
);
7444 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
7445 DECL_CONTEXT (decl
) = basetype
;
7446 DECL_CLASS_CONTEXT (decl
) = basetype
;
7447 DECL_ASSEMBLER_NAME (decl
) = build_static_name (basetype
, declarator
);
7450 decl
= build_decl (VAR_DECL
, declarator
, complete_type (type
));
7452 DECL_ASSEMBLER_NAME (decl
) = current_namespace_id (DECL_ASSEMBLER_NAME (decl
));
7454 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
7456 DECL_THIS_EXTERN (decl
) = 1;
7457 DECL_EXTERNAL (decl
) = !initialized
;
7460 /* In class context, static means one per class,
7461 public access, and static storage. */
7462 if (DECL_FIELD_CONTEXT (decl
) != NULL_TREE
7463 && IS_AGGR_TYPE (DECL_FIELD_CONTEXT (decl
)))
7465 TREE_PUBLIC (decl
) = 1;
7466 TREE_STATIC (decl
) = 1;
7467 DECL_EXTERNAL (decl
) = 0;
7469 /* At top level, either `static' or no s.c. makes a definition
7470 (perhaps tentative), and absence of `static' makes it public. */
7471 else if (toplevel_bindings_p ())
7473 TREE_PUBLIC (decl
) = (RIDBIT_NOTSETP (RID_STATIC
, specbits
)
7474 && (DECL_THIS_EXTERN (decl
) || ! constp
));
7475 TREE_STATIC (decl
) = ! DECL_EXTERNAL (decl
);
7477 /* Not at top level, only `static' makes a static definition. */
7480 TREE_STATIC (decl
) = !! RIDBIT_SETP (RID_STATIC
, specbits
);
7481 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
);
7486 /* Create a canonical pointer to member function type. */
7489 build_ptrmemfunc_type (type
)
7496 /* If a canonical type already exists for this type, use it. We use
7497 this method instead of type_hash_canon, because it only does a
7498 simple equality check on the list of field members. */
7500 if ((t
= TYPE_GET_PTRMEMFUNC_TYPE (type
)))
7503 push_obstacks (TYPE_OBSTACK (type
), TYPE_OBSTACK (type
));
7505 u
= make_lang_type (UNION_TYPE
);
7506 IS_AGGR_TYPE (u
) = 0;
7507 fields
[0] = build_lang_field_decl (FIELD_DECL
, pfn_identifier
, type
);
7508 fields
[1] = build_lang_field_decl (FIELD_DECL
, delta2_identifier
,
7510 finish_builtin_type (u
, "__ptrmemfunc_type", fields
, 1, ptr_type_node
);
7511 TYPE_NAME (u
) = NULL_TREE
;
7513 t
= make_lang_type (RECORD_TYPE
);
7515 /* Let the front-end know this is a pointer to member function. */
7516 TYPE_PTRMEMFUNC_FLAG (t
) = 1;
7517 /* and not really an aggregate. */
7518 IS_AGGR_TYPE (t
) = 0;
7520 fields
[0] = build_lang_field_decl (FIELD_DECL
, delta_identifier
,
7522 fields
[1] = build_lang_field_decl (FIELD_DECL
, index_identifier
,
7524 fields
[2] = build_lang_field_decl (FIELD_DECL
, pfn_or_delta2_identifier
, u
);
7525 finish_builtin_type (t
, "__ptrmemfunc_type", fields
, 2, ptr_type_node
);
7529 /* Zap out the name so that the back-end will give us the debugging
7530 information for this anonymous RECORD_TYPE. */
7531 TYPE_NAME (t
) = NULL_TREE
;
7533 TYPE_SET_PTRMEMFUNC_TYPE (type
, t
);
7535 /* Seems to be wanted. */
7536 CLASSTYPE_GOT_SEMICOLON (t
) = 1;
7540 /* Given declspecs and a declarator,
7541 determine the name and type of the object declared
7542 and construct a ..._DECL node for it.
7543 (In one case we can return a ..._TYPE node instead.
7544 For invalid input we sometimes return 0.)
7546 DECLSPECS is a chain of tree_list nodes whose value fields
7547 are the storage classes and type specifiers.
7549 DECL_CONTEXT says which syntactic context this declaration is in:
7550 NORMAL for most contexts. Make a VAR_DECL or FUNCTION_DECL or TYPE_DECL.
7551 FUNCDEF for a function definition. Like NORMAL but a few different
7552 error messages in each case. Return value may be zero meaning
7553 this definition is too screwy to try to parse.
7554 MEMFUNCDEF for a function definition. Like FUNCDEF but prepares to
7555 handle member functions (which have FIELD context).
7556 Return value may be zero meaning this definition is too screwy to
7558 PARM for a parameter declaration (either within a function prototype
7559 or before a function body). Make a PARM_DECL, or return void_type_node.
7560 CATCHPARM for a parameter declaration before a catch clause.
7561 TYPENAME if for a typename (in a cast or sizeof).
7562 Don't make a DECL node; just return the ..._TYPE node.
7563 FIELD for a struct or union field; make a FIELD_DECL.
7564 BITFIELD for a field with specified width.
7565 INITIALIZED is 1 if the decl has an initializer.
7567 In the TYPENAME case, DECLARATOR is really an absolute declarator.
7568 It may also be so in the PARM case, for a prototype where the
7569 argument type is specified but not the name.
7571 This function is where the complicated C meanings of `static'
7572 and `extern' are interpreted.
7574 For C++, if there is any monkey business to do, the function which
7575 calls this one must do it, i.e., prepending instance variables,
7576 renaming overloaded function names, etc.
7578 Note that for this C++, it is an error to define a method within a class
7579 which does not belong to that class.
7581 Except in the case where SCOPE_REFs are implicitly known (such as
7582 methods within a class being redundantly qualified),
7583 declarations which involve SCOPE_REFs are returned as SCOPE_REFs
7584 (class_name::decl_name). The caller must also deal with this.
7586 If a constructor or destructor is seen, and the context is FIELD,
7587 then the type gains the attribute TREE_HAS_x. If such a declaration
7588 is erroneous, NULL_TREE is returned.
7590 QUALS is used only for FUNCDEF and MEMFUNCDEF cases. For a member
7591 function, these are the qualifiers to give to the `this' pointer.
7593 May return void_type_node if the declarator turned out to be a friend.
7594 See grokfield for details. */
7596 enum return_types
{ return_normal
, return_ctor
, return_dtor
, return_conversion
};
7599 grokdeclarator (declarator
, declspecs
, decl_context
, initialized
, attrlist
)
7602 enum decl_context decl_context
;
7606 RID_BIT_TYPE specbits
;
7609 tree type
= NULL_TREE
;
7613 int virtualp
, explicitp
, friendp
, inlinep
, staticp
;
7614 int explicit_int
= 0;
7615 int explicit_char
= 0;
7616 int defaulted_int
= 0;
7617 int opaque_typedef
= 0;
7618 tree typedef_decl
= NULL_TREE
;
7620 tree typedef_type
= NULL_TREE
;
7621 int funcdef_flag
= 0;
7622 enum tree_code innermost_code
= ERROR_MARK
;
7625 /* See the code below that used this. */
7626 tree decl_machine_attr
= NULL_TREE
;
7628 /* Set this to error_mark_node for FIELD_DECLs we could not handle properly.
7629 All FIELD_DECLs we build here have `init' put into their DECL_INITIAL. */
7630 tree init
= NULL_TREE
;
7632 /* Keep track of what sort of function is being processed
7633 so that we can warn about default return values, or explicit
7634 return values which do not match prescribed defaults. */
7635 enum return_types return_type
= return_normal
;
7637 tree dname
= NULL_TREE
;
7638 tree ctype
= current_class_type
;
7639 tree ctor_return_type
= NULL_TREE
;
7640 enum overload_flags flags
= NO_SPECIAL
;
7641 tree quals
= NULL_TREE
;
7642 tree raises
= NULL_TREE
;
7643 int template_count
= 0;
7645 RIDBIT_RESET_ALL (specbits
);
7646 if (decl_context
== FUNCDEF
)
7647 funcdef_flag
= 1, decl_context
= NORMAL
;
7648 else if (decl_context
== MEMFUNCDEF
)
7649 funcdef_flag
= -1, decl_context
= FIELD
;
7650 else if (decl_context
== BITFIELD
)
7651 bitfield
= 1, decl_context
= FIELD
;
7653 /* Look inside a declarator for the name being declared
7654 and get it as a string, for an error message. */
7656 tree
*next
= &declarator
;
7660 while (next
&& *next
)
7663 switch (TREE_CODE (decl
))
7667 next
= &TREE_OPERAND (decl
, 0);
7670 case BIT_NOT_EXPR
: /* for C++ destructors! */
7672 tree name
= TREE_OPERAND (decl
, 0);
7673 tree rename
= NULL_TREE
;
7675 my_friendly_assert (flags
== NO_SPECIAL
, 152);
7677 return_type
= return_dtor
;
7678 if (TREE_CODE (name
) == TYPE_DECL
)
7679 TREE_OPERAND (decl
, 0) = name
= constructor_name (name
);
7680 my_friendly_assert (TREE_CODE (name
) == IDENTIFIER_NODE
, 153);
7681 if (ctype
== NULL_TREE
)
7683 if (current_class_type
== NULL_TREE
)
7685 error ("destructors must be member functions");
7690 tree t
= constructor_name (current_class_name
);
7697 tree t
= constructor_name (ctype
);
7704 cp_error ("destructor `%T' must match class name `%T'",
7706 TREE_OPERAND (decl
, 0) = rename
;
7712 case ADDR_EXPR
: /* C++ reference declaration */
7717 innermost_code
= TREE_CODE (decl
);
7718 next
= &TREE_OPERAND (decl
, 0);
7722 if (parmlist_is_exprlist (TREE_OPERAND (decl
, 1)))
7724 /* This is actually a variable declaration using constructor
7725 syntax. We need to call start_decl and cp_finish_decl so we
7726 can get the variable initialized... */
7728 *next
= TREE_OPERAND (decl
, 0);
7729 init
= TREE_OPERAND (decl
, 1);
7731 decl
= start_decl (declarator
, declspecs
, 1);
7732 finish_decl (decl
, init
, NULL_TREE
);
7735 innermost_code
= TREE_CODE (decl
);
7736 if (decl_context
== FIELD
&& ctype
== NULL_TREE
)
7737 ctype
= current_class_type
;
7739 && TREE_OPERAND (decl
, 0)
7740 && (TREE_CODE (TREE_OPERAND (decl
, 0)) == TYPE_DECL
7741 && ((DECL_NAME (TREE_OPERAND (decl
, 0))
7742 == constructor_name_full (ctype
))
7743 || (DECL_NAME (TREE_OPERAND (decl
, 0))
7744 == constructor_name (ctype
)))))
7745 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
7746 next
= &TREE_OPERAND (decl
, 0);
7748 if (ctype
!= NULL_TREE
7749 && decl
!= NULL_TREE
&& flags
!= DTOR_FLAG
7750 && decl
== constructor_name (ctype
))
7752 return_type
= return_ctor
;
7753 ctor_return_type
= ctype
;
7758 case TEMPLATE_ID_EXPR
:
7760 tree fns
= TREE_OPERAND (decl
, 0);
7762 if (TREE_CODE (fns
) == LOOKUP_EXPR
)
7763 fns
= TREE_OPERAND (fns
, 0);
7765 if (TREE_CODE (fns
) == IDENTIFIER_NODE
)
7767 else if (really_overloaded_fn (fns
))
7768 dname
= DECL_NAME (get_first_fn (fns
));
7770 dname
= DECL_NAME (fns
);
7774 case IDENTIFIER_NODE
:
7775 if (TREE_CODE (decl
) == IDENTIFIER_NODE
)
7782 cp_error ("declarator-id missing; using reserved word `%D'",
7784 name
= IDENTIFIER_POINTER (dname
);
7786 if (! IDENTIFIER_OPNAME_P (dname
)
7787 /* Linux headers use '__op'. Arrgh. */
7788 || IDENTIFIER_TYPENAME_P (dname
) && ! TREE_TYPE (dname
))
7789 name
= IDENTIFIER_POINTER (dname
);
7792 if (IDENTIFIER_TYPENAME_P (dname
))
7794 my_friendly_assert (flags
== NO_SPECIAL
, 154);
7795 flags
= TYPENAME_FLAG
;
7796 ctor_return_type
= TREE_TYPE (dname
);
7797 return_type
= return_conversion
;
7799 name
= operator_name_string (dname
);
7806 /* Perform error checking, and decide on a ctype. */
7807 tree cname
= TREE_OPERAND (decl
, 0);
7808 if (cname
== NULL_TREE
)
7810 else if (! is_aggr_type (cname
, 1))
7811 TREE_OPERAND (decl
, 0) = NULL_TREE
;
7812 /* Must test TREE_OPERAND (decl, 1), in case user gives
7813 us `typedef (class::memfunc)(int); memfunc *memfuncptr;' */
7814 else if (TREE_OPERAND (decl
, 1)
7815 && TREE_CODE (TREE_OPERAND (decl
, 1)) == INDIRECT_REF
)
7817 else if (TREE_CODE (cname
) == TEMPLATE_TYPE_PARM
)
7819 cp_error ("`%T::%D' is not a valid declarator", cname
,
7820 TREE_OPERAND (decl
, 1));
7821 cp_error (" perhaps you want `typename %T::%D' to make it a type",
7822 cname
, TREE_OPERAND (decl
, 1));
7823 return void_type_node
;
7825 else if (ctype
== NULL_TREE
)
7827 else if (TREE_COMPLEXITY (decl
) == current_class_depth
)
7828 TREE_OPERAND (decl
, 0) = ctype
;
7831 if (! UNIQUELY_DERIVED_FROM_P (cname
, ctype
))
7833 cp_error ("type `%T' is not derived from type `%T'",
7835 TREE_OPERAND (decl
, 0) = NULL_TREE
;
7841 if (ctype
&& TREE_CODE (TREE_OPERAND (decl
, 1)) == TYPE_DECL
7842 && ((DECL_NAME (TREE_OPERAND (decl
, 1))
7843 == constructor_name_full (ctype
))
7844 || (DECL_NAME (TREE_OPERAND (decl
, 1))
7845 == constructor_name (ctype
))))
7846 TREE_OPERAND (decl
, 1) = constructor_name (ctype
);
7847 next
= &TREE_OPERAND (decl
, 1);
7851 if (TREE_CODE (decl
) == IDENTIFIER_NODE
7852 && constructor_name (ctype
) == decl
)
7854 return_type
= return_ctor
;
7855 ctor_return_type
= ctype
;
7857 else if (TREE_CODE (decl
) == BIT_NOT_EXPR
7858 && TREE_CODE (TREE_OPERAND (decl
, 0)) == IDENTIFIER_NODE
7859 && (constructor_name (ctype
) == TREE_OPERAND (decl
, 0)
7860 || constructor_name_full (ctype
) == TREE_OPERAND (decl
, 0)))
7862 return_type
= return_dtor
;
7863 ctor_return_type
= ctype
;
7865 TREE_OPERAND (decl
, 0) = constructor_name (ctype
);
7866 next
= &TREE_OPERAND (decl
, 0);
7877 /* Parse error puts this typespec where
7878 a declarator should go. */
7879 cp_error ("`%T' specified as declarator-id", DECL_NAME (decl
));
7880 if (TREE_TYPE (decl
) == current_class_type
)
7881 cp_error (" perhaps you want `%T' for a constructor",
7882 current_class_name
);
7883 dname
= DECL_NAME (decl
);
7884 name
= IDENTIFIER_POINTER (dname
);
7886 /* Avoid giving two errors for this. */
7887 IDENTIFIER_CLASS_VALUE (dname
) = NULL_TREE
;
7889 declspecs
= temp_tree_cons (NULL_TREE
, integer_type_node
,
7896 cp_compiler_error ("`%D' as declarator", decl
);
7897 return 0; /* We used to do a 155 abort here. */
7904 /* A function definition's declarator must have the form of
7905 a function declarator. */
7907 if (funcdef_flag
&& innermost_code
!= CALL_EXPR
)
7910 if (((dname
&& IDENTIFIER_OPNAME_P (dname
)) || flags
== TYPENAME_FLAG
)
7911 && innermost_code
!= CALL_EXPR
7912 && ! (ctype
&& declspecs
== NULL_TREE
))
7914 cp_error ("declaration of `%D' as non-function", dname
);
7915 return void_type_node
;
7918 /* Anything declared one level down from the top level
7919 must be one of the parameters of a function
7920 (because the body is at least two levels down). */
7922 /* This heuristic cannot be applied to C++ nodes! Fixed, however,
7923 by not allowing C++ class definitions to specify their parameters
7924 with xdecls (must be spec.d in the parmlist).
7926 Since we now wait to push a class scope until we are sure that
7927 we are in a legitimate method context, we must set oldcname
7928 explicitly (since current_class_name is not yet alive).
7930 We also want to avoid calling this a PARM if it is in a namespace. */
7932 if (decl_context
== NORMAL
&& ! namespace_bindings_p ()
7933 && ! pseudo_global_level_p ())
7935 struct binding_level
*b
= current_binding_level
;
7936 current_binding_level
= b
->level_chain
;
7937 if (current_binding_level
!= 0 && toplevel_bindings_p ())
7938 decl_context
= PARM
;
7939 current_binding_level
= b
;
7942 /* Look through the decl specs and record which ones appear.
7943 Some typespecs are defined as built-in typenames.
7944 Others, the ones that are modifiers of other types,
7945 are represented by bits in SPECBITS: set the bits for
7946 the modifiers that appear. Storage class keywords are also in SPECBITS.
7948 If there is a typedef name or a type, store the type in TYPE.
7949 This includes builtin typedefs such as `int'.
7951 Set EXPLICIT_INT if the type is `int' or `char' and did not
7952 come from a user typedef.
7954 Set LONGLONG if `long' is mentioned twice.
7956 For C++, constructors and destructors have their own fast treatment. */
7958 for (spec
= declspecs
; spec
; spec
= TREE_CHAIN (spec
))
7963 /* Certain parse errors slip through. For example,
7964 `int class;' is not caught by the parser. Try
7965 weakly to recover here. */
7966 if (TREE_CODE (spec
) != TREE_LIST
)
7969 id
= TREE_VALUE (spec
);
7971 if (TREE_CODE (id
) == IDENTIFIER_NODE
)
7973 if (id
== ridpointers
[(int) RID_INT
]
7974 || id
== ridpointers
[(int) RID_CHAR
]
7975 || id
== ridpointers
[(int) RID_BOOL
]
7976 || id
== ridpointers
[(int) RID_WCHAR
])
7980 if (id
== ridpointers
[(int) RID_BOOL
])
7981 error ("`bool' is now a keyword");
7983 cp_error ("extraneous `%T' ignored", id
);
7987 if (id
== ridpointers
[(int) RID_INT
])
7989 else if (id
== ridpointers
[(int) RID_CHAR
])
7991 type
= TREE_TYPE (IDENTIFIER_GLOBAL_VALUE (id
));
7995 /* C++ aggregate types. */
7996 if (IDENTIFIER_HAS_TYPE_VALUE (id
))
7999 cp_error ("multiple declarations `%T' and `%T'", type
, id
);
8001 type
= IDENTIFIER_TYPE_VALUE (id
);
8005 for (i
= (int) RID_FIRST_MODIFIER
; i
<= (int) RID_LAST_MODIFIER
; i
++)
8007 if (ridpointers
[i
] == id
)
8009 if (i
== (int) RID_LONG
&& RIDBIT_SETP (i
, specbits
))
8011 if (pedantic
&& ! in_system_header
)
8012 pedwarn ("ANSI C++ does not support `long long'");
8014 error ("`long long long' is too long for GCC");
8018 else if (RIDBIT_SETP (i
, specbits
))
8019 pedwarn ("duplicate `%s'", IDENTIFIER_POINTER (id
));
8020 RIDBIT_SET (i
, specbits
);
8025 /* C++ aggregate types. */
8026 else if (TREE_CODE (id
) == TYPE_DECL
)
8029 cp_error ("multiple declarations `%T' and `%T'", type
,
8033 type
= TREE_TYPE (id
);
8034 TREE_VALUE (spec
) = type
;
8039 error ("two or more data types in declaration of `%s'", name
);
8040 else if (TREE_CODE (id
) == IDENTIFIER_NODE
)
8042 register tree t
= lookup_name (id
, 1);
8043 if (!t
|| TREE_CODE (t
) != TYPE_DECL
)
8044 error ("`%s' fails to be a typedef or built in type",
8045 IDENTIFIER_POINTER (id
));
8048 type
= TREE_TYPE (t
);
8050 /* See the code below that used this. */
8051 decl_machine_attr
= DECL_MACHINE_ATTRIBUTES (id
);
8056 else if (id
!= error_mark_node
)
8057 /* Can't change CLASS nodes into RECORD nodes here! */
8063 typedef_type
= type
;
8065 /* No type at all: default to `int', and set DEFAULTED_INT
8066 because it was not a user-defined typedef.
8067 Except when we have a `typedef' inside a signature, in
8068 which case the type defaults to `unknown type' and is
8069 instantiated when assigning to a signature pointer or ref. */
8071 if (type
== NULL_TREE
8072 && (RIDBIT_SETP (RID_SIGNED
, specbits
)
8073 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8074 || RIDBIT_SETP (RID_LONG
, specbits
)
8075 || RIDBIT_SETP (RID_SHORT
, specbits
)))
8077 /* These imply 'int'. */
8078 type
= integer_type_node
;
8082 if (type
== NULL_TREE
)
8085 if (return_type
== return_dtor
)
8086 type
= void_type_node
;
8087 else if (return_type
== return_ctor
)
8088 type
= build_pointer_type (ctor_return_type
);
8089 else if (return_type
== return_conversion
)
8090 type
= ctor_return_type
;
8091 else if (current_class_type
8092 && IS_SIGNATURE (current_class_type
)
8093 && RIDBIT_SETP (RID_TYPEDEF
, specbits
)
8094 && (decl_context
== FIELD
|| decl_context
== NORMAL
))
8098 type
= copy_node (opaque_type_node
);
8104 if (warn_return_type
8105 && return_type
== return_normal
)
8106 /* Save warning until we know what is really going on. */
8107 warn_about_return_type
= 1;
8109 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8110 pedwarn ("ANSI C++ forbids typedef which does not specify a type");
8111 else if (declspecs
== NULL_TREE
8112 && (innermost_code
!= CALL_EXPR
|| pedantic
))
8113 cp_pedwarn ("ANSI C++ forbids declaration `%D' with no type or storage class",
8115 type
= integer_type_node
;
8118 else if (return_type
== return_dtor
)
8120 error ("return type specification for destructor invalid");
8121 type
= void_type_node
;
8123 else if (return_type
== return_ctor
)
8125 error ("return type specification for constructor invalid");
8126 type
= build_pointer_type (ctor_return_type
);
8128 else if (return_type
== return_conversion
)
8130 if (comptypes (type
, ctor_return_type
, 1) == 0)
8131 cp_error ("operator `%T' declared to return `%T'",
8132 ctor_return_type
, type
);
8134 cp_pedwarn ("return type specified for `operator %T'",
8137 type
= ctor_return_type
;
8142 /* Now process the modifiers that were specified
8143 and check for invalid combinations. */
8145 /* Long double is a special combination. */
8147 if (RIDBIT_SETP (RID_LONG
, specbits
)
8148 && TYPE_MAIN_VARIANT (type
) == double_type_node
)
8150 RIDBIT_RESET (RID_LONG
, specbits
);
8151 type
= build_type_variant (long_double_type_node
, TYPE_READONLY (type
),
8152 TYPE_VOLATILE (type
));
8155 /* Check all other uses of type modifiers. */
8157 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8158 || RIDBIT_SETP (RID_SIGNED
, specbits
)
8159 || RIDBIT_SETP (RID_LONG
, specbits
)
8160 || RIDBIT_SETP (RID_SHORT
, specbits
))
8164 if (TREE_CODE (type
) == REAL_TYPE
)
8165 error ("short, signed or unsigned invalid for `%s'", name
);
8166 else if (TREE_CODE (type
) != INTEGER_TYPE
)
8167 error ("long, short, signed or unsigned invalid for `%s'", name
);
8168 else if (RIDBIT_SETP (RID_LONG
, specbits
)
8169 && RIDBIT_SETP (RID_SHORT
, specbits
))
8170 error ("long and short specified together for `%s'", name
);
8171 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8172 || RIDBIT_SETP (RID_SHORT
, specbits
))
8174 error ("long or short specified with char for `%s'", name
);
8175 else if ((RIDBIT_SETP (RID_LONG
, specbits
)
8176 || RIDBIT_SETP (RID_SHORT
, specbits
))
8177 && TREE_CODE (type
) == REAL_TYPE
)
8178 error ("long or short specified with floating type for `%s'", name
);
8179 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8180 && RIDBIT_SETP (RID_UNSIGNED
, specbits
))
8181 error ("signed and unsigned given together for `%s'", name
);
8185 if (!explicit_int
&& !defaulted_int
&& !explicit_char
&& pedantic
)
8187 pedwarn ("long, short, signed or unsigned used invalidly for `%s'",
8189 if (flag_pedantic_errors
)
8194 /* Discard the type modifiers if they are invalid. */
8197 RIDBIT_RESET (RID_UNSIGNED
, specbits
);
8198 RIDBIT_RESET (RID_SIGNED
, specbits
);
8199 RIDBIT_RESET (RID_LONG
, specbits
);
8200 RIDBIT_RESET (RID_SHORT
, specbits
);
8205 if (RIDBIT_SETP (RID_COMPLEX
, specbits
)
8206 && TREE_CODE (type
) != INTEGER_TYPE
&& TREE_CODE (type
) != REAL_TYPE
)
8208 error ("complex invalid for `%s'", name
);
8209 RIDBIT_RESET (RID_COMPLEX
, specbits
);
8212 /* Decide whether an integer type is signed or not.
8213 Optionally treat bitfields as signed by default. */
8214 if (RIDBIT_SETP (RID_UNSIGNED
, specbits
)
8215 || (bitfield
&& ! flag_signed_bitfields
8216 && (explicit_int
|| defaulted_int
|| explicit_char
8217 /* A typedef for plain `int' without `signed'
8218 can be controlled just like plain `int'. */
8219 || ! (typedef_decl
!= NULL_TREE
8220 && C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
8221 && TREE_CODE (type
) != ENUMERAL_TYPE
8222 && RIDBIT_NOTSETP (RID_SIGNED
, specbits
)))
8225 type
= long_long_unsigned_type_node
;
8226 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8227 type
= long_unsigned_type_node
;
8228 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8229 type
= short_unsigned_type_node
;
8230 else if (type
== char_type_node
)
8231 type
= unsigned_char_type_node
;
8232 else if (typedef_decl
)
8233 type
= unsigned_type (type
);
8235 type
= unsigned_type_node
;
8237 else if (RIDBIT_SETP (RID_SIGNED
, specbits
)
8238 && type
== char_type_node
)
8239 type
= signed_char_type_node
;
8241 type
= long_long_integer_type_node
;
8242 else if (RIDBIT_SETP (RID_LONG
, specbits
))
8243 type
= long_integer_type_node
;
8244 else if (RIDBIT_SETP (RID_SHORT
, specbits
))
8245 type
= short_integer_type_node
;
8247 if (RIDBIT_SETP (RID_COMPLEX
, specbits
))
8249 /* If we just have "complex", it is equivalent to
8250 "complex double", but if any modifiers at all are specified it is
8251 the complex form of TYPE. E.g, "complex short" is
8252 "complex short int". */
8254 if (defaulted_int
&& ! longlong
8255 && ! (RIDBIT_SETP (RID_LONG
, specbits
)
8256 || RIDBIT_SETP (RID_SHORT
, specbits
)
8257 || RIDBIT_SETP (RID_SIGNED
, specbits
)
8258 || RIDBIT_SETP (RID_UNSIGNED
, specbits
)))
8259 type
= complex_double_type_node
;
8260 else if (type
== integer_type_node
)
8261 type
= complex_integer_type_node
;
8262 else if (type
== float_type_node
)
8263 type
= complex_float_type_node
;
8264 else if (type
== double_type_node
)
8265 type
= complex_double_type_node
;
8266 else if (type
== long_double_type_node
)
8267 type
= complex_long_double_type_node
;
8269 type
= build_complex_type (type
);
8272 /* Set CONSTP if this declaration is `const', whether by
8273 explicit specification or via a typedef.
8274 Likewise for VOLATILEP. */
8276 constp
= !! RIDBIT_SETP (RID_CONST
, specbits
) + TYPE_READONLY (type
);
8277 volatilep
= !! RIDBIT_SETP (RID_VOLATILE
, specbits
) + TYPE_VOLATILE (type
);
8279 inlinep
= !! RIDBIT_SETP (RID_INLINE
, specbits
);
8280 virtualp
= RIDBIT_SETP (RID_VIRTUAL
, specbits
);
8281 RIDBIT_RESET (RID_VIRTUAL
, specbits
);
8282 explicitp
= RIDBIT_SETP (RID_EXPLICIT
, specbits
) != 0;
8283 RIDBIT_RESET (RID_EXPLICIT
, specbits
);
8285 if (RIDBIT_SETP (RID_STATIC
, specbits
))
8286 staticp
= 1 + (decl_context
== FIELD
);
8288 if (virtualp
&& staticp
== 2)
8290 cp_error ("member `%D' cannot be declared both virtual and static",
8294 friendp
= RIDBIT_SETP (RID_FRIEND
, specbits
);
8295 RIDBIT_RESET (RID_FRIEND
, specbits
);
8297 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
8299 if (decl_context
== PARM
)
8301 error ("non-member `%s' cannot be declared `mutable'", name
);
8302 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8304 else if (friendp
|| decl_context
== TYPENAME
)
8306 error ("non-object member `%s' cannot be declared `mutable'", name
);
8307 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8311 /* Warn if two storage classes are given. Default to `auto'. */
8313 if (RIDBIT_ANY_SET (specbits
))
8315 if (RIDBIT_SETP (RID_STATIC
, specbits
)) nclasses
++;
8316 if (RIDBIT_SETP (RID_EXTERN
, specbits
)) nclasses
++;
8317 if (decl_context
== PARM
&& nclasses
> 0)
8318 error ("storage class specifiers invalid in parameter declarations");
8319 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8321 if (decl_context
== PARM
)
8322 error ("typedef declaration invalid in parameter declaration");
8325 if (RIDBIT_SETP (RID_AUTO
, specbits
)) nclasses
++;
8326 if (RIDBIT_SETP (RID_REGISTER
, specbits
)) nclasses
++;
8329 /* Give error if `virtual' is used outside of class declaration. */
8331 && (current_class_name
== NULL_TREE
|| decl_context
!= FIELD
))
8333 error ("virtual outside class declaration");
8336 if (current_class_name
== NULL_TREE
&& RIDBIT_SETP (RID_MUTABLE
, specbits
))
8338 error ("only members can be declared mutable");
8339 RIDBIT_RESET (RID_MUTABLE
, specbits
);
8342 /* Static anonymous unions are dealt with here. */
8343 if (staticp
&& decl_context
== TYPENAME
8344 && TREE_CODE (declspecs
) == TREE_LIST
8345 && TREE_CODE (TREE_VALUE (declspecs
)) == UNION_TYPE
8346 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (TREE_VALUE (declspecs
))))
8347 decl_context
= FIELD
;
8349 /* Give error if `const,' `volatile,' `inline,' `friend,' or `virtual'
8350 is used in a signature member function declaration. */
8351 if (decl_context
== FIELD
8352 && IS_SIGNATURE (current_class_type
)
8353 && RIDBIT_NOTSETP (RID_TYPEDEF
, specbits
))
8357 error ("`const' specified for signature member function `%s'", name
);
8362 error ("`volatile' specified for signature member function `%s'",
8368 error ("`inline' specified for signature member function `%s'", name
);
8369 /* Later, we'll make signature member functions inline. */
8374 error ("`friend' declaration in signature definition");
8379 error ("`virtual' specified for signature member function `%s'",
8381 /* Later, we'll make signature member functions virtual. */
8386 /* Warn about storage classes that are invalid for certain
8387 kinds of declarations (parameters, typenames, etc.). */
8390 error ("multiple storage classes in declaration of `%s'", name
);
8391 else if (decl_context
!= NORMAL
&& nclasses
> 0)
8393 if ((decl_context
== PARM
|| decl_context
== CATCHPARM
)
8394 && (RIDBIT_SETP (RID_REGISTER
, specbits
)
8395 || RIDBIT_SETP (RID_AUTO
, specbits
)))
8397 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
))
8399 else if (decl_context
== FIELD
8400 && ! IS_SIGNATURE (current_class_type
)
8401 /* C++ allows static class elements */
8402 && RIDBIT_SETP (RID_STATIC
, specbits
))
8403 /* C++ also allows inlines and signed and unsigned elements,
8404 but in those cases we don't come in here. */
8408 if (decl_context
== FIELD
)
8410 tree tmp
= NULL_TREE
;
8411 register int op
= 0;
8415 /* Avoid trying to get an operand off an identifier node. */
8416 if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
8419 tmp
= TREE_OPERAND (declarator
, 0);
8420 op
= IDENTIFIER_OPNAME_P (tmp
);
8422 error ("storage class specified for %s `%s'",
8423 IS_SIGNATURE (current_class_type
)
8425 ? "signature member operator"
8426 : "signature member function")
8427 : (op
? "member operator" : "field"),
8428 op
? operator_name_string (tmp
) : name
);
8431 error (((decl_context
== PARM
|| decl_context
== CATCHPARM
)
8432 ? "storage class specified for parameter `%s'"
8433 : "storage class specified for typename"), name
);
8434 RIDBIT_RESET (RID_REGISTER
, specbits
);
8435 RIDBIT_RESET (RID_AUTO
, specbits
);
8436 RIDBIT_RESET (RID_EXTERN
, specbits
);
8438 if (decl_context
== FIELD
&& IS_SIGNATURE (current_class_type
))
8440 RIDBIT_RESET (RID_STATIC
, specbits
);
8445 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && initialized
&& !funcdef_flag
)
8447 if (toplevel_bindings_p ())
8449 /* It's common practice (and completely valid) to have a const
8450 be initialized and declared extern. */
8452 warning ("`%s' initialized and declared `extern'", name
);
8455 error ("`%s' has both `extern' and initializer", name
);
8457 else if (RIDBIT_SETP (RID_EXTERN
, specbits
) && funcdef_flag
8458 && ! toplevel_bindings_p ())
8459 error ("nested function `%s' declared `extern'", name
);
8460 else if (toplevel_bindings_p ())
8462 if (RIDBIT_SETP (RID_AUTO
, specbits
))
8463 error ("top-level declaration of `%s' specifies `auto'", name
);
8466 if (nclasses
> 0 && friendp
)
8467 error ("storage class specifiers invalid in friend function declarations");
8469 /* Now figure out the structure of the declarator proper.
8470 Descend through it, creating more complex types, until we reach
8471 the declared identifier (or NULL_TREE, in an absolute declarator). */
8473 while (declarator
&& TREE_CODE (declarator
) != IDENTIFIER_NODE
8474 && TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
8476 /* Each level of DECLARATOR is either an ARRAY_REF (for ...[..]),
8477 an INDIRECT_REF (for *...),
8478 a CALL_EXPR (for ...(...)),
8479 an identifier (for the name being declared)
8480 or a null pointer (for the place in an absolute declarator
8481 where the name was omitted).
8482 For the last two cases, we have just exited the loop.
8484 For C++ it could also be
8485 a SCOPE_REF (for class :: ...). In this case, we have converted
8486 sensible names to types, and those are the values we use to
8487 qualify the member name.
8488 an ADDR_EXPR (for &...),
8489 a BIT_NOT_EXPR (for destructors)
8491 At this point, TYPE is the type of elements of an array,
8492 or for a function to return, or for a pointer to point to.
8493 After this sequence of ifs, TYPE is the type of the
8494 array or function or pointer, and DECLARATOR has had its
8495 outermost layer removed. */
8497 if (type
== error_mark_node
)
8499 if (TREE_CODE (declarator
) == SCOPE_REF
)
8500 declarator
= TREE_OPERAND (declarator
, 1);
8502 declarator
= TREE_OPERAND (declarator
, 0);
8505 if (quals
!= NULL_TREE
8506 && (declarator
== NULL_TREE
8507 || TREE_CODE (declarator
) != SCOPE_REF
))
8509 if (ctype
== NULL_TREE
&& TREE_CODE (type
) == METHOD_TYPE
)
8510 ctype
= TYPE_METHOD_BASETYPE (type
);
8511 if (ctype
!= NULL_TREE
)
8513 tree dummy
= build_decl (TYPE_DECL
, NULL_TREE
, type
);
8514 ctype
= grok_method_quals (ctype
, dummy
, quals
);
8515 type
= TREE_TYPE (dummy
);
8519 switch (TREE_CODE (declarator
))
8523 register tree itype
= NULL_TREE
;
8524 register tree size
= TREE_OPERAND (declarator
, 1);
8525 /* The index is a signed object `sizetype' bits wide. */
8526 tree index_type
= signed_type (sizetype
);
8528 declarator
= TREE_OPERAND (declarator
, 0);
8530 /* Check for some types that there cannot be arrays of. */
8532 if (TYPE_MAIN_VARIANT (type
) == void_type_node
)
8534 cp_error ("declaration of `%D' as array of voids", dname
);
8535 type
= error_mark_node
;
8538 if (TREE_CODE (type
) == FUNCTION_TYPE
)
8540 cp_error ("declaration of `%D' as array of functions", dname
);
8541 type
= error_mark_node
;
8544 /* ARM $8.4.3: Since you can't have a pointer to a reference,
8545 you can't have arrays of references. If we allowed them,
8546 then we'd be saying x[i] is valid for an array x, but
8547 then you'd have to ask: what does `*(x + i)' mean? */
8548 if (TREE_CODE (type
) == REFERENCE_TYPE
)
8550 if (decl_context
== TYPENAME
)
8551 cp_error ("cannot make arrays of references");
8553 cp_error ("declaration of `%D' as array of references",
8555 type
= error_mark_node
;
8558 if (TREE_CODE (type
) == OFFSET_TYPE
)
8560 cp_error ("declaration of `%D' as array of data members",
8562 type
= error_mark_node
;
8565 if (TREE_CODE (type
) == METHOD_TYPE
)
8567 cp_error ("declaration of `%D' as array of function members",
8569 type
= error_mark_node
;
8572 if (size
== error_mark_node
)
8573 type
= error_mark_node
;
8575 if (type
== error_mark_node
)
8580 /* Must suspend_momentary here because the index
8581 type may need to live until the end of the function.
8582 For example, it is used in the declaration of a
8583 variable which requires destructing at the end of
8584 the function; then build_vec_delete will need this
8586 int yes
= suspend_momentary ();
8587 /* might be a cast */
8588 if (TREE_CODE (size
) == NOP_EXPR
8589 && TREE_TYPE (size
) == TREE_TYPE (TREE_OPERAND (size
, 0)))
8590 size
= TREE_OPERAND (size
, 0);
8592 /* If this involves a template parameter, it'll be
8593 constant, but we don't know what the value is yet. */
8594 if (processing_template_decl
)
8596 itype
= make_node (INTEGER_TYPE
);
8597 TYPE_MIN_VALUE (itype
) = size_zero_node
;
8598 TYPE_MAX_VALUE (itype
) = build_min
8599 (MINUS_EXPR
, sizetype
, size
, integer_one_node
);
8600 goto dont_grok_size
;
8603 if (TREE_CODE (TREE_TYPE (size
)) != INTEGER_TYPE
8604 && TREE_CODE (TREE_TYPE (size
)) != ENUMERAL_TYPE
)
8606 cp_error ("size of array `%D' has non-integer type",
8608 size
= integer_one_node
;
8610 if (TREE_READONLY_DECL_P (size
))
8611 size
= decl_constant_value (size
);
8612 if (pedantic
&& integer_zerop (size
))
8613 cp_pedwarn ("ANSI C++ forbids zero-size array `%D'", dname
);
8614 if (TREE_CONSTANT (size
))
8616 int old_flag_pedantic_errors
= flag_pedantic_errors
;
8617 int old_pedantic
= pedantic
;
8618 pedantic
= flag_pedantic_errors
= 1;
8619 /* Always give overflow errors on array subscripts. */
8620 constant_expression_warning (size
);
8621 pedantic
= old_pedantic
;
8622 flag_pedantic_errors
= old_flag_pedantic_errors
;
8623 if (INT_CST_LT (size
, integer_zero_node
))
8625 cp_error ("size of array `%D' is negative", dname
);
8626 size
= integer_one_node
;
8634 cp_pedwarn ("ANSI C++ forbids variable-size array `%D'",
8637 cp_pedwarn ("ANSI C++ forbids variable-size array");
8642 = fold (build_binary_op (MINUS_EXPR
,
8643 cp_convert (index_type
, size
),
8644 cp_convert (index_type
,
8645 integer_one_node
), 1));
8646 if (! TREE_CONSTANT (itype
))
8647 itype
= variable_size (itype
);
8648 else if (TREE_OVERFLOW (itype
))
8650 error ("overflow in array dimension");
8651 TREE_OVERFLOW (itype
) = 0;
8654 /* If we're a parm, we need to have a permanent type so
8655 mangling checks for re-use will work right. If both the
8656 element and index types are permanent, the array type
8658 if (decl_context
== PARM
8659 && allocation_temporary_p () && TREE_PERMANENT (type
))
8661 push_obstacks (&permanent_obstack
, &permanent_obstack
);
8662 itype
= build_index_type (itype
);
8666 itype
= build_index_type (itype
);
8669 resume_momentary (yes
);
8672 /* Build the array type itself, then merge any constancy or
8673 volatility into the target type. We must do it in this order
8674 to ensure that the TYPE_MAIN_VARIANT field of the array type
8675 is set correctly. */
8677 type
= build_cplus_array_type (type
, itype
);
8678 if (constp
|| volatilep
)
8679 type
= cp_build_type_variant (type
, constp
, volatilep
);
8689 tree inner_parms
= TREE_OPERAND (declarator
, 1);
8690 tree inner_decl
= TREE_OPERAND (declarator
, 0);
8692 /* Declaring a function type.
8693 Make sure we have a valid type for the function to return. */
8695 /* Is this an error? Should they be merged into TYPE here? */
8696 if (pedantic
&& (constp
|| volatilep
))
8697 pedwarn ("function declared to return const or volatile result");
8699 /* Merge any constancy or volatility into the function return
8702 if (constp
|| volatilep
)
8704 type
= cp_build_type_variant (type
, constp
, volatilep
);
8705 if (IS_AGGR_TYPE (type
))
8706 build_pointer_type (type
);
8712 /* Warn about some types functions can't return. */
8714 if (TREE_CODE (type
) == FUNCTION_TYPE
)
8716 error ("`%s' declared as function returning a function", name
);
8717 type
= integer_type_node
;
8719 if (TREE_CODE (type
) == ARRAY_TYPE
)
8721 error ("`%s' declared as function returning an array", name
);
8722 type
= integer_type_node
;
8725 if (inner_decl
&& TREE_CODE (inner_decl
) == SCOPE_REF
)
8726 inner_decl
= TREE_OPERAND (inner_decl
, 1);
8728 if (inner_decl
&& TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
)
8731 /* Pick up type qualifiers which should be applied to `this'. */
8732 quals
= TREE_OPERAND (declarator
, 2);
8734 /* Pick up the exception specifications. */
8735 raises
= TREE_TYPE (declarator
);
8737 /* Say it's a definition only for the CALL_EXPR
8738 closest to the identifier. */
8741 && (TREE_CODE (inner_decl
) == IDENTIFIER_NODE
8742 || TREE_CODE (inner_decl
) == TEMPLATE_ID_EXPR
8743 || TREE_CODE (inner_decl
) == BIT_NOT_EXPR
);
8745 if (ctype
== NULL_TREE
8746 && decl_context
== FIELD
8748 && (friendp
== 0 || dname
== current_class_name
))
8749 ctype
= current_class_type
;
8751 if (ctype
&& return_type
== return_conversion
)
8752 TYPE_HAS_CONVERSION (ctype
) = 1;
8753 if (ctype
&& constructor_name (ctype
) == dname
)
8755 /* We are within a class's scope. If our declarator name
8756 is the same as the class name, and we are defining
8757 a function, then it is a constructor/destructor, and
8758 therefore returns a void type. */
8760 if (flags
== DTOR_FLAG
)
8762 /* ANSI C++ June 5 1992 WP 12.4.1. A destructor may
8763 not be declared const or volatile. A destructor
8764 may not be static. */
8766 error ("destructor cannot be static member function");
8769 error ("destructors cannot be declared `const' or `volatile'");
8770 return void_type_node
;
8772 if (decl_context
== FIELD
)
8774 if (! member_function_or_else (ctype
, current_class_type
,
8775 "destructor for alien class `%s' cannot be a member"))
8776 return void_type_node
;
8779 else /* it's a constructor. */
8783 /* ANSI C++ June 5 1992 WP 12.1.2. A constructor may
8784 not be declared const or volatile. A constructor may
8785 not be virtual. A constructor may not be static. */
8787 error ("constructor cannot be static member function");
8790 pedwarn ("constructors cannot be declared virtual");
8795 error ("constructors cannot be declared `const' or `volatile'");
8796 return void_type_node
;
8799 RID_BIT_TYPE tmp_bits
;
8800 bcopy ((void*)&specbits
, (void*)&tmp_bits
, sizeof (RID_BIT_TYPE
));
8801 RIDBIT_RESET (RID_INLINE
, tmp_bits
);
8802 RIDBIT_RESET (RID_STATIC
, tmp_bits
);
8803 if (RIDBIT_ANY_SET (tmp_bits
))
8804 error ("return value type specifier for constructor ignored");
8806 type
= build_pointer_type (ctype
);
8807 if (decl_context
== FIELD
8808 && IS_SIGNATURE (current_class_type
))
8810 error ("constructor not allowed in signature");
8811 return void_type_node
;
8813 else if (decl_context
== FIELD
)
8815 if (! member_function_or_else (ctype
, current_class_type
,
8816 "constructor for alien class `%s' cannot be member"))
8817 return void_type_node
;
8818 TYPE_HAS_CONSTRUCTOR (ctype
) = 1;
8819 if (return_type
!= return_ctor
)
8823 if (decl_context
== FIELD
)
8829 error ("can't initialize friend function `%s'", name
);
8832 /* Cannot be both friend and virtual. */
8833 error ("virtual functions cannot be friends");
8834 RIDBIT_RESET (RID_FRIEND
, specbits
);
8837 if (decl_context
== NORMAL
)
8838 error ("friend declaration not in class definition");
8839 if (current_function_decl
&& funcdef_flag
)
8840 cp_error ("can't define friend function `%s' in a local class definition",
8844 /* Construct the function type and go to the next
8845 inner layer of declarator. */
8847 declarator
= TREE_OPERAND (declarator
, 0);
8849 /* FIXME: This is where default args should be fully
8852 arg_types
= grokparms (inner_parms
, funcdecl_p
? funcdef_flag
: 0);
8856 /* Get past destructors, etc.
8857 We know we have one because FLAGS will be non-zero.
8859 Complain about improper parameter lists here. */
8860 if (TREE_CODE (declarator
) == BIT_NOT_EXPR
)
8862 declarator
= TREE_OPERAND (declarator
, 0);
8864 if (strict_prototype
== 0 && arg_types
== NULL_TREE
)
8865 arg_types
= void_list_node
;
8866 else if (arg_types
== NULL_TREE
8867 || arg_types
!= void_list_node
)
8869 error ("destructors cannot be specified with parameters");
8870 arg_types
= void_list_node
;
8875 /* ANSI says that `const int foo ();'
8876 does not make the function foo const. */
8877 type
= build_function_type (type
, arg_types
);
8881 for (t
= arg_types
; t
; t
= TREE_CHAIN (t
))
8882 if (TREE_PURPOSE (t
)
8883 && TREE_CODE (TREE_PURPOSE (t
)) == DEFAULT_ARG
)
8885 add_defarg_fn (type
);
8894 /* Filter out pointers-to-references and references-to-references.
8895 We can get these if a TYPE_DECL is used. */
8897 if (TREE_CODE (type
) == REFERENCE_TYPE
)
8899 error ("cannot declare %s to references",
8900 TREE_CODE (declarator
) == ADDR_EXPR
8901 ? "references" : "pointers");
8902 declarator
= TREE_OPERAND (declarator
, 0);
8906 if (TREE_CODE (type
) == OFFSET_TYPE
8907 && (TREE_CODE (TREE_TYPE (type
)) == VOID_TYPE
8908 || TREE_CODE (TREE_TYPE (type
)) == REFERENCE_TYPE
))
8910 cp_error ("cannot declare pointer to `%#T' member",
8912 type
= TREE_TYPE (type
);
8915 /* Merge any constancy or volatility into the target type
8918 if (constp
|| volatilep
)
8920 /* A const or volatile signature pointer/reference is
8921 pointing to a const or volatile object, i.e., the
8922 `optr' is const or volatile, respectively, not the
8923 signature pointer/reference itself. */
8924 if (! IS_SIGNATURE (type
))
8926 type
= cp_build_type_variant (type
, constp
, volatilep
);
8927 if (IS_AGGR_TYPE (type
))
8928 build_pointer_type (type
);
8934 if (IS_SIGNATURE (type
))
8936 if (TREE_CODE (declarator
) == ADDR_EXPR
)
8938 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
8939 && TYPE_SIZE (type
))
8940 cp_warning ("empty signature `%T' used in signature reference declaration",
8943 type
= build_signature_reference_type (type
,
8946 sorry ("signature reference");
8952 if (CLASSTYPE_METHOD_VEC (type
) == NULL_TREE
8953 && TYPE_SIZE (type
))
8954 cp_warning ("empty signature `%T' used in signature pointer declaration",
8956 type
= build_signature_pointer_type (type
,
8962 else if (TREE_CODE (declarator
) == ADDR_EXPR
)
8964 if (TREE_CODE (type
) == FUNCTION_TYPE
)
8966 error ("cannot declare references to functions; use pointer to function instead");
8967 type
= build_pointer_type (type
);
8971 if (TYPE_MAIN_VARIANT (type
) == void_type_node
)
8972 error ("invalid type: `void &'");
8974 type
= build_reference_type (type
);
8977 else if (TREE_CODE (type
) == METHOD_TYPE
)
8979 type
= build_ptrmemfunc_type (build_pointer_type (type
));
8982 type
= build_pointer_type (type
);
8984 /* Process a list of type modifier keywords (such as
8985 const or volatile) that were given inside the `*' or `&'. */
8987 if (TREE_TYPE (declarator
))
8989 register tree typemodlist
;
8991 for (typemodlist
= TREE_TYPE (declarator
); typemodlist
;
8992 typemodlist
= TREE_CHAIN (typemodlist
))
8994 if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_CONST
])
8996 else if (TREE_VALUE (typemodlist
) == ridpointers
[(int) RID_VOLATILE
])
9001 error ("invalid type modifier within %s declarator",
9002 TREE_CODE (declarator
) == ADDR_EXPR
9003 ? "reference" : "pointer");
9007 pedwarn ("duplicate `const'");
9009 pedwarn ("duplicate `volatile'");
9010 if (TREE_CODE (declarator
) == ADDR_EXPR
9011 && (constp
|| volatilep
))
9014 pedwarn ("discarding `const' applied to a reference");
9016 pedwarn ("discarding `volatile' applied to a reference");
9017 constp
= volatilep
= 0;
9020 declarator
= TREE_OPERAND (declarator
, 0);
9026 /* We have converted type names to NULL_TREE if the
9027 name was bogus, or to a _TYPE node, if not.
9029 The variable CTYPE holds the type we will ultimately
9030 resolve to. The code here just needs to build
9031 up appropriate member types. */
9032 tree sname
= TREE_OPERAND (declarator
, 1);
9035 /* Destructors can have their visibilities changed as well. */
9036 if (TREE_CODE (sname
) == BIT_NOT_EXPR
)
9037 sname
= TREE_OPERAND (sname
, 0);
9039 if (TREE_COMPLEXITY (declarator
) == 0)
9040 /* This needs to be here, in case we are called
9041 multiple times. */ ;
9042 else if (friendp
&& (TREE_COMPLEXITY (declarator
) < 2))
9043 /* don't fall out into global scope. Hides real bug? --eichin */ ;
9044 else if (! IS_AGGR_TYPE_CODE
9045 (TREE_CODE (TREE_OPERAND (declarator
, 0))))
9047 else if (TREE_COMPLEXITY (declarator
) == current_class_depth
)
9049 /* Resolve any TYPENAME_TYPEs from the decl-specifier-seq
9050 that refer to ctype. They couldn't be resolved earlier
9051 because we hadn't pushed into the class yet.
9052 Example: resolve 'B<T>::type' in
9053 'B<typename B<T>::type> B<T>::f () { }'. */
9054 if (current_template_parms
9055 && uses_template_parms (type
)
9056 && uses_template_parms (current_class_type
))
9058 tree args
= current_template_args ();
9059 type
= tsubst (type
, args
,
9060 TREE_VEC_LENGTH (TREE_VEC_ELT
9065 /* This pop_nested_class corresponds to the
9066 push_nested_class used to push into class scope for
9067 parsing the argument list of a function decl, in
9069 pop_nested_class (1);
9070 TREE_COMPLEXITY (declarator
) = current_class_depth
;
9073 my_friendly_abort (16);
9075 if (TREE_OPERAND (declarator
, 0) == NULL_TREE
)
9077 /* We had a reference to a global decl, or
9078 perhaps we were given a non-aggregate typedef,
9079 in which case we cleared this out, and should just
9080 keep going as though it wasn't there. */
9084 ctype
= TREE_OPERAND (declarator
, 0);
9087 while (t
!= NULL_TREE
)
9089 if (CLASSTYPE_TEMPLATE_INFO (t
))
9090 template_count
+= 1;
9091 t
= TYPE_MAIN_DECL (t
);
9092 if (DECL_LANG_SPECIFIC (t
))
9093 t
= DECL_CLASS_CONTEXT (t
);
9098 if (sname
== NULL_TREE
)
9101 if (TREE_CODE (sname
) == IDENTIFIER_NODE
)
9103 /* This is the `standard' use of the scoping operator:
9104 basetype :: member . */
9106 if (ctype
== current_class_type
)
9112 Is this ill-formed? */
9115 cp_pedwarn ("extra qualification `%T::' on member `%s' ignored",
9118 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9120 if (current_class_type
== NULL_TREE
9122 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9123 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9126 cp_error ("cannot declare member function `%T::%s' within `%T'",
9127 ctype
, name
, current_class_type
);
9128 return void_type_node
;
9131 else if (RIDBIT_SETP (RID_TYPEDEF
, specbits
)
9132 || TYPE_SIZE (complete_type (ctype
)) != NULL_TREE
)
9134 /* have to move this code elsewhere in this function.
9135 this code is used for i.e., typedef int A::M; M *pm;
9137 It is? How? jason 10/2/94 */
9139 if (current_class_type
)
9141 cp_error ("cannot declare member `%T::%s' within `%T'",
9142 ctype
, name
, current_class_type
);
9143 return void_type_node
;
9145 type
= build_offset_type (ctype
, type
);
9147 else if (uses_template_parms (ctype
))
9149 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9151 = build_cplus_method_type (build_type_variant (ctype
,
9155 TYPE_ARG_TYPES (type
));
9159 cp_error ("structure `%T' not yet defined", ctype
);
9160 return error_mark_node
;
9165 else if (TREE_CODE (sname
) == SCOPE_REF
)
9166 my_friendly_abort (17);
9170 declarator
= TREE_OPERAND (declarator
, 1);
9171 if (declarator
&& TREE_CODE (declarator
) == CALL_EXPR
)
9172 /* In this case, we will deal with it later. */
9176 if (TREE_CODE (type
) == FUNCTION_TYPE
)
9177 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
), TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9179 type
= build_offset_type (ctype
, type
);
9186 declarator
= TREE_OPERAND (declarator
, 0);
9192 declarator
= NULL_TREE
;
9196 declarator
= NULL_TREE
;
9200 my_friendly_abort (158);
9206 error ("only constructors can be declared `explicit'");
9210 /* Now TYPE has the actual type. */
9212 /* If this is declaring a typedef name, return a TYPE_DECL. */
9214 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9218 error ("const `%s' cannot be declared `mutable'", name
);
9219 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9223 error ("static `%s' cannot be declared `mutable'", name
);
9224 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9228 if (RIDBIT_SETP (RID_TYPEDEF
, specbits
) && decl_context
!= TYPENAME
)
9232 /* Note that the grammar rejects storage classes
9233 in typenames, fields or parameters. */
9234 if (constp
|| volatilep
)
9235 type
= cp_build_type_variant (type
, constp
, volatilep
);
9237 if (decl_context
== FIELD
)
9239 if (declarator
== current_class_name
)
9240 cp_pedwarn ("ANSI C++ forbids nested type `%D' with same name as enclosing class",
9242 decl
= build_lang_decl (TYPE_DECL
, declarator
, type
);
9243 if (IS_SIGNATURE (current_class_type
) && opaque_typedef
)
9244 SIGNATURE_HAS_OPAQUE_TYPEDECLS (current_class_type
) = 1;
9247 decl
= build_decl (TYPE_DECL
, declarator
, type
);
9249 /* If the user declares "struct {...} foo" then `foo' will have
9250 an anonymous name. Fill that name in now. Nothing can
9251 refer to it, so nothing needs know about the name change.
9252 The TYPE_NAME field was filled in by build_struct_xref. */
9253 if (type
!= error_mark_node
9255 && TREE_CODE (TYPE_NAME (type
)) == TYPE_DECL
9256 && ANON_AGGRNAME_P (TYPE_IDENTIFIER (type
)))
9258 /* replace the anonymous name with the real name everywhere. */
9259 lookup_tag_reverse (type
, declarator
);
9260 TYPE_NAME (type
) = decl
;
9262 if (TYPE_LANG_SPECIFIC (type
))
9263 TYPE_WAS_ANONYMOUS (type
) = 1;
9265 DECL_ASSEMBLER_NAME (decl
) = DECL_NAME (decl
);
9266 DECL_ASSEMBLER_NAME (decl
)
9267 = get_identifier (build_overload_name (type
, 1, 1));
9270 if (TREE_CODE (type
) == OFFSET_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
9272 cp_error_at ("typedef name may not be class-qualified", decl
);
9277 if (ctype
== NULL_TREE
)
9279 if (TREE_CODE (type
) != METHOD_TYPE
)
9280 cp_error_at ("invalid type qualifier for non-method type", decl
);
9282 ctype
= TYPE_METHOD_BASETYPE (type
);
9284 if (ctype
!= NULL_TREE
)
9285 grok_method_quals (ctype
, decl
, quals
);
9288 if (RIDBIT_SETP (RID_SIGNED
, specbits
)
9289 || (typedef_decl
&& C_TYPEDEF_EXPLICITLY_SIGNED (typedef_decl
)))
9290 C_TYPEDEF_EXPLICITLY_SIGNED (decl
) = 1;
9292 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9294 error ("non-object member `%s' cannot be declared mutable", name
);
9297 bad_specifiers (decl
, "type", virtualp
, quals
!= NULL_TREE
,
9298 inlinep
, friendp
, raises
!= NULL_TREE
);
9301 error ("typedef declaration includes an initializer");
9306 /* Detect the case of an array type of unspecified size
9307 which came, as such, direct from a typedef name.
9308 We must copy the type, so that each identifier gets
9309 a distinct type, so that each identifier's size can be
9310 controlled separately by its own initializer. */
9312 if (type
== typedef_type
&& TREE_CODE (type
) == ARRAY_TYPE
9313 && TYPE_DOMAIN (type
) == NULL_TREE
)
9315 type
= build_cplus_array_type (TREE_TYPE (type
), TYPE_DOMAIN (type
));
9318 /* If this is a type name (such as, in a cast or sizeof),
9319 compute the type and return it now. */
9321 if (decl_context
== TYPENAME
)
9323 /* Note that the grammar rejects storage classes
9324 in typenames, fields or parameters. */
9325 if (constp
|| volatilep
)
9326 if (IS_SIGNATURE (type
))
9327 error ("`const' or `volatile' specified with signature type");
9329 type
= cp_build_type_variant (type
, constp
, volatilep
);
9331 /* Special case: "friend class foo" looks like a TYPENAME context. */
9336 cp_error ("`volatile' specified for friend class declaration");
9341 cp_error ("`inline' specified for friend class declaration");
9345 /* Only try to do this stuff if we didn't already give up. */
9346 if (type
!= integer_type_node
)
9348 /* A friendly class? */
9349 if (current_class_type
)
9350 make_friend_class (current_class_type
, TYPE_MAIN_VARIANT (type
));
9352 error ("trying to make class `%s' a friend of global scope",
9353 TYPE_NAME_STRING (type
));
9354 type
= void_type_node
;
9359 tree dummy
= build_decl (TYPE_DECL
, declarator
, type
);
9360 if (ctype
== NULL_TREE
)
9362 my_friendly_assert (TREE_CODE (type
) == METHOD_TYPE
, 159);
9363 ctype
= TYPE_METHOD_BASETYPE (type
);
9365 grok_method_quals (ctype
, dummy
, quals
);
9366 type
= TREE_TYPE (dummy
);
9371 else if (declarator
== NULL_TREE
&& decl_context
!= PARM
9372 && decl_context
!= CATCHPARM
9373 && TREE_CODE (type
) != UNION_TYPE
9376 cp_error ("abstract declarator `%T' used as declaration", type
);
9377 declarator
= make_anon_name ();
9380 /* `void' at top level (not within pointer)
9381 is allowed only in typedefs or type names.
9382 We don't complain about parms either, but that is because
9383 a better error message can be made later. */
9385 if (TYPE_MAIN_VARIANT (type
) == void_type_node
&& decl_context
!= PARM
)
9388 error ("unnamed variable or field declared void");
9389 else if (TREE_CODE (declarator
) == IDENTIFIER_NODE
)
9391 if (IDENTIFIER_OPNAME_P (declarator
))
9392 my_friendly_abort (356);
9394 error ("variable or field `%s' declared void", name
);
9397 error ("variable or field declared void");
9398 type
= integer_type_node
;
9401 /* Now create the decl, which may be a VAR_DECL, a PARM_DECL
9402 or a FUNCTION_DECL, depending on DECL_CONTEXT and TYPE. */
9407 if (decl_context
== PARM
)
9410 error ("cannot use `::' in parameter declaration");
9412 /* A parameter declared as an array of T is really a pointer to T.
9413 One declared as a function is really a pointer to a function.
9414 One declared as a member is really a pointer to member. */
9416 if (TREE_CODE (type
) == ARRAY_TYPE
)
9418 /* Transfer const-ness of array into that of type pointed to. */
9419 type
= build_pointer_type
9420 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
9421 volatilep
= constp
= 0;
9423 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9424 type
= build_pointer_type (type
);
9425 else if (TREE_CODE (type
) == OFFSET_TYPE
)
9426 type
= build_pointer_type (type
);
9427 else if (type
== void_type_node
&& declarator
)
9429 error ("declaration of `%s' as void", name
);
9433 decl
= build_decl (PARM_DECL
, declarator
, complete_type (type
));
9435 bad_specifiers (decl
, "parameter", virtualp
, quals
!= NULL_TREE
,
9436 inlinep
, friendp
, raises
!= NULL_TREE
);
9437 if (current_class_type
9438 && IS_SIGNATURE (current_class_type
))
9441 error ("parameter of signature member function declared `inline'");
9442 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9443 error ("parameter of signature member function declared `auto'");
9444 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
9445 error ("parameter of signature member function declared `register'");
9448 /* Compute the type actually passed in the parmlist,
9449 for the case where there is no prototype.
9450 (For example, shorts and chars are passed as ints.)
9451 When there is a prototype, this is overridden later. */
9453 DECL_ARG_TYPE (decl
) = type_promotes_to (type
);
9455 else if (decl_context
== FIELD
)
9457 if (type
== error_mark_node
)
9459 /* Happens when declaring arrays of sizes which
9460 are error_mark_node, for example. */
9463 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9467 /* We catch the others as conflicts with the builtin
9469 if (friendp
&& declarator
== ridpointers
[(int) RID_SIGNED
])
9471 cp_error ("function `%D' cannot be declared friend",
9478 if (ctype
== NULL_TREE
)
9479 ctype
= current_class_type
;
9481 if (ctype
== NULL_TREE
)
9483 cp_error ("can't make `%D' into a method -- not in a class",
9485 return void_type_node
;
9488 /* ``A union may [ ... ] not [ have ] virtual functions.''
9490 if (virtualp
&& TREE_CODE (ctype
) == UNION_TYPE
)
9492 cp_error ("function `%D' declared virtual inside a union",
9494 return void_type_node
;
9497 if (declarator
== ansi_opname
[(int) NEW_EXPR
]
9498 || declarator
== ansi_opname
[(int) VEC_NEW_EXPR
]
9499 || declarator
== ansi_opname
[(int) DELETE_EXPR
]
9500 || declarator
== ansi_opname
[(int) VEC_DELETE_EXPR
])
9504 cp_error ("`%D' cannot be declared virtual, since it is always static",
9509 else if (staticp
< 2)
9510 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9511 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9514 /* Tell grokfndecl if it needs to set TREE_PUBLIC on the node. */
9515 publicp
= (! friendp
|| ! staticp
);
9516 decl
= grokfndecl (ctype
, type
,
9517 TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
9518 ? declarator
: dname
,
9520 virtualp
, flags
, quals
, raises
, attrlist
,
9521 friendp
? -1 : 0, friendp
, publicp
, inlinep
,
9522 funcdef_flag
, template_count
);
9523 if (decl
== NULL_TREE
)
9526 /* This clobbers the attrs stored in `decl' from `attrlist'. */
9527 /* The decl and setting of decl_machine_attr is also turned off. */
9528 decl
= build_decl_attribute_variant (decl
, decl_machine_attr
);
9532 DECL_NONCONVERTING_P (decl
) = 1;
9534 else if (TREE_CODE (type
) == METHOD_TYPE
)
9536 /* We only get here for friend declarations of
9537 members of other classes. */
9538 /* All method decls are public, so tell grokfndecl to set
9539 TREE_PUBLIC, also. */
9540 decl
= grokfndecl (ctype
, type
, declarator
, declarator
,
9541 virtualp
, flags
, quals
, raises
, attrlist
,
9542 friendp
? -1 : 0, friendp
, 1, 0, funcdef_flag
,
9544 if (decl
== NULL_TREE
)
9547 else if (!staticp
&& ! processing_template_decl
9548 && TYPE_SIZE (complete_type (type
)) == NULL_TREE
9549 && (TREE_CODE (type
) != ARRAY_TYPE
|| initialized
== 0))
9552 cp_error ("field `%D' has incomplete type", declarator
);
9554 cp_error ("name `%T' has incomplete type", type
);
9556 /* If we're instantiating a template, tell them which
9557 instantiation made the field's type be incomplete. */
9558 if (current_class_type
9559 && TYPE_NAME (current_class_type
)
9560 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (current_class_type
))
9561 && declspecs
&& TREE_VALUE (declspecs
)
9562 && TREE_TYPE (TREE_VALUE (declspecs
)) == type
)
9563 cp_error (" in instantiation of template `%T'",
9564 current_class_type
);
9566 type
= error_mark_node
;
9573 error ("`%s' is neither function nor method; cannot be declared friend",
9574 IDENTIFIER_POINTER (declarator
));
9582 /* Friends are treated specially. */
9583 if (ctype
== current_class_type
)
9584 warning ("member functions are implicitly friends of their class");
9588 if (decl
&& DECL_NAME (decl
))
9589 t
= do_friend (ctype
, declarator
, decl
,
9590 last_function_parms
, flags
, quals
,
9592 if (t
&& funcdef_flag
)
9595 return void_type_node
;
9599 /* Structure field. It may not be a function, except for C++ */
9601 if (decl
== NULL_TREE
)
9605 /* Motion 10 at San Diego: If a static const integral data
9606 member is initialized with an integral constant
9607 expression, the initializer may appear either in the
9608 declaration (within the class), or in the definition,
9609 but not both. If it appears in the class, the member is
9610 a member constant. The file-scope definition is always
9617 cp_pedwarn ("ANSI C++ forbids in-class initialization of non-const static member `%D'",
9620 else if (! INTEGRAL_TYPE_P (type
))
9621 cp_pedwarn ("ANSI C++ forbids member constant `%D' of non-integral type `%T'", declarator
, type
);
9625 /* Note that initialization of const members is prohibited
9626 by the draft ANSI standard, though it appears to be in
9627 common practice. 12.6.2: The argument list is used to
9628 initialize the named nonstatic member.... This (or an
9629 initializer list) is the only way to initialize
9630 nonstatic const and reference members. */
9631 else if (pedantic
|| ! constp
)
9632 cp_pedwarn ("ANSI C++ forbids initialization of %s `%D'",
9633 constp
? "const member" : "member", declarator
);
9636 if (staticp
|| (constp
&& initialized
))
9638 /* ANSI C++ Apr '95 wp 9.2 */
9639 if (staticp
&& declarator
== current_class_name
)
9640 cp_pedwarn ("ANSI C++ forbids static member `%D' with same name as enclosing class",
9643 /* C++ allows static class members.
9644 All other work for this is done by grokfield.
9645 This VAR_DECL is built by build_lang_field_decl.
9646 All other VAR_DECLs are built by build_decl. */
9647 decl
= build_lang_field_decl (VAR_DECL
, declarator
, type
);
9648 TREE_STATIC (decl
) = 1;
9649 /* In class context, 'static' means public access. */
9650 TREE_PUBLIC (decl
) = DECL_EXTERNAL (decl
) = !!staticp
;
9654 decl
= build_lang_field_decl (FIELD_DECL
, declarator
, type
);
9655 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9657 DECL_MUTABLE_P (decl
) = 1;
9658 RIDBIT_RESET (RID_MUTABLE
, specbits
);
9662 bad_specifiers (decl
, "field", virtualp
, quals
!= NULL_TREE
,
9663 inlinep
, friendp
, raises
!= NULL_TREE
);
9666 else if (TREE_CODE (type
) == FUNCTION_TYPE
|| TREE_CODE (type
) == METHOD_TYPE
)
9674 if (TREE_CODE (declarator
) == TEMPLATE_ID_EXPR
)
9675 original_name
= dname
;
9677 original_name
= declarator
;
9679 if (RIDBIT_SETP (RID_AUTO
, specbits
))
9680 error ("storage class `auto' invalid for function `%s'", name
);
9681 else if (RIDBIT_SETP (RID_REGISTER
, specbits
))
9682 error ("storage class `register' invalid for function `%s'", name
);
9684 /* Function declaration not at top level.
9685 Storage classes other than `extern' are not allowed
9686 and `extern' makes no difference. */
9687 if (! toplevel_bindings_p ()
9688 && (RIDBIT_SETP (RID_STATIC
, specbits
)
9689 || RIDBIT_SETP (RID_INLINE
, specbits
))
9692 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9693 pedwarn ("storage class `static' invalid for function `%s' declared out of global scope", name
);
9695 pedwarn ("storage class `inline' invalid for function `%s' declared out of global scope", name
);
9698 if (ctype
== NULL_TREE
)
9702 error ("virtual non-class function `%s'", name
);
9706 if (current_lang_name
== lang_name_cplusplus
9707 && ! processing_template_decl
9708 && ! (IDENTIFIER_LENGTH (original_name
) == 4
9709 && IDENTIFIER_POINTER (original_name
)[0] == 'm'
9710 && strcmp (IDENTIFIER_POINTER (original_name
), "main") == 0)
9711 && ! (IDENTIFIER_LENGTH (original_name
) > 10
9712 && IDENTIFIER_POINTER (original_name
)[0] == '_'
9713 && IDENTIFIER_POINTER (original_name
)[1] == '_'
9714 && strncmp (IDENTIFIER_POINTER (original_name
)+2, "builtin_", 8) == 0))
9715 /* Plain overloading: will not be grok'd by grokclassfn. */
9716 if (name_mangling_version
< 1
9717 || TREE_CODE (declarator
) != TEMPLATE_ID_EXPR
)
9718 declarator
= build_decl_overload (dname
, TYPE_ARG_TYPES (type
), 0);
9720 else if (TREE_CODE (type
) == FUNCTION_TYPE
&& staticp
< 2)
9721 type
= build_cplus_method_type (build_type_variant (ctype
, constp
, volatilep
),
9722 TREE_TYPE (type
), TYPE_ARG_TYPES (type
));
9724 /* Record presence of `static'. */
9725 publicp
= (ctype
!= NULL_TREE
9726 || RIDBIT_SETP (RID_EXTERN
, specbits
)
9727 || !RIDBIT_SETP (RID_STATIC
, specbits
));
9729 decl
= grokfndecl (ctype
, type
, original_name
, declarator
,
9730 virtualp
, flags
, quals
, raises
, attrlist
,
9731 friendp
? 2 : 1, friendp
,
9732 publicp
, inlinep
, funcdef_flag
,
9734 if (decl
== NULL_TREE
)
9737 if (ctype
== NULL_TREE
&& DECL_LANGUAGE (decl
) != lang_c
9738 && (!DECL_TEMPLATE_SPECIALIZATION (decl
) ||
9739 name_mangling_version
< 1))
9740 DECL_ASSEMBLER_NAME (decl
) = current_namespace_id (declarator
);
9744 int illegal_static
= 0;
9746 /* Don't allow a static member function in a class, and forbid
9747 declaring main to be static. */
9748 if (TREE_CODE (type
) == METHOD_TYPE
)
9750 cp_pedwarn ("cannot declare member function `%D' to have static linkage", decl
);
9753 else if (current_function_decl
)
9755 /* FIXME need arm citation */
9756 error ("cannot declare static function inside another function");
9763 RIDBIT_RESET (RID_STATIC
, specbits
);
9769 /* It's a variable. */
9771 if (decl_context
== CATCHPARM
)
9776 error ("cannot use `::' in parameter declaration");
9779 /* A parameter declared as an array of T is really a pointer to T.
9780 One declared as a function is really a pointer to a function.
9781 One declared as a member is really a pointer to member. */
9783 if (TREE_CODE (type
) == ARRAY_TYPE
)
9785 /* Transfer const-ness of array into that of type
9787 type
= build_pointer_type
9788 (cp_build_type_variant (TREE_TYPE (type
), constp
, volatilep
));
9789 volatilep
= constp
= 0;
9791 else if (TREE_CODE (type
) == FUNCTION_TYPE
)
9792 type
= build_pointer_type (type
);
9793 else if (TREE_CODE (type
) == OFFSET_TYPE
)
9794 type
= build_pointer_type (type
);
9797 /* An uninitialized decl with `extern' is a reference. */
9798 decl
= grokvardecl (type
, declarator
, &specbits
, initialized
, constp
);
9799 bad_specifiers (decl
, "variable", virtualp
, quals
!= NULL_TREE
,
9800 inlinep
, friendp
, raises
!= NULL_TREE
);
9804 DECL_CONTEXT (decl
) = ctype
;
9807 cp_pedwarn ("static member `%D' re-declared as static", decl
);
9809 RIDBIT_RESET (RID_STATIC
, specbits
);
9811 if (RIDBIT_SETP (RID_REGISTER
, specbits
) && TREE_STATIC (decl
))
9813 cp_error ("static member `%D' declared `register'", decl
);
9814 RIDBIT_RESET (RID_REGISTER
, specbits
);
9816 if (RIDBIT_SETP (RID_EXTERN
, specbits
) && pedantic
)
9818 cp_pedwarn ("cannot explicitly declare member `%#D' to have extern linkage",
9820 RIDBIT_RESET (RID_EXTERN
, specbits
);
9825 if (RIDBIT_SETP (RID_MUTABLE
, specbits
))
9827 error ("`%s' cannot be declared mutable", name
);
9830 /* Record `register' declaration for warnings on &
9831 and in case doing stupid register allocation. */
9833 if (RIDBIT_SETP (RID_REGISTER
, specbits
))
9834 DECL_REGISTER (decl
) = 1;
9836 if (RIDBIT_SETP (RID_EXTERN
, specbits
))
9837 DECL_THIS_EXTERN (decl
) = 1;
9839 if (RIDBIT_SETP (RID_STATIC
, specbits
))
9840 DECL_THIS_STATIC (decl
) = 1;
9842 /* Record constancy and volatility. */
9845 TREE_READONLY (decl
) = TREE_CODE (type
) != REFERENCE_TYPE
;
9848 TREE_SIDE_EFFECTS (decl
) = 1;
9849 TREE_THIS_VOLATILE (decl
) = 1;
9856 /* Tell if a parmlist/exprlist looks like an exprlist or a parmlist.
9857 An empty exprlist is a parmlist. An exprlist which
9858 contains only identifiers at the global level
9859 is a parmlist. Otherwise, it is an exprlist. */
9862 parmlist_is_exprlist (exprs
)
9865 if (exprs
== NULL_TREE
|| TREE_PARMLIST (exprs
))
9868 if (toplevel_bindings_p ())
9870 /* At the global level, if these are all identifiers,
9871 then it is a parmlist. */
9874 if (TREE_CODE (TREE_VALUE (exprs
)) != IDENTIFIER_NODE
)
9876 exprs
= TREE_CHAIN (exprs
);
9883 /* Subroutine of `grokparms'. In a fcn definition, arg types must
9886 C++: also subroutine of `start_function'. */
9889 require_complete_types_for_parms (parms
)
9892 if (processing_template_decl
)
9897 tree type
= TREE_TYPE (parms
);
9898 if (TYPE_SIZE (complete_type (type
)) == NULL_TREE
)
9900 if (DECL_NAME (parms
))
9901 error ("parameter `%s' has incomplete type",
9902 IDENTIFIER_POINTER (DECL_NAME (parms
)));
9904 error ("parameter has incomplete type");
9905 TREE_TYPE (parms
) = error_mark_node
;
9908 /* If the arg types are incomplete in a declaration,
9909 they must include undefined tags.
9910 These tags can never be defined in the scope of the declaration,
9911 so the types can never be completed,
9912 and no call can be compiled successfully. */
9913 /* This is not the right behavior for C++, but not having
9914 it is also probably wrong. */
9917 /* Now warn if is a pointer to an incomplete type. */
9918 while (TREE_CODE (type
) == POINTER_TYPE
9919 || TREE_CODE (type
) == REFERENCE_TYPE
)
9920 type
= TREE_TYPE (type
);
9921 type
= TYPE_MAIN_VARIANT (type
);
9922 if (TYPE_SIZE (type
) == NULL_TREE
)
9924 if (DECL_NAME (parm
) != NULL_TREE
)
9925 warning ("parameter `%s' points to incomplete type",
9926 IDENTIFIER_POINTER (DECL_NAME (parm
)));
9928 warning ("parameter points to incomplete type");
9932 parms
= TREE_CHAIN (parms
);
9936 /* Decode the list of parameter types for a function type.
9937 Given the list of things declared inside the parens,
9938 return a list of types.
9940 The list we receive can have three kinds of elements:
9941 an IDENTIFIER_NODE for names given without types,
9942 a TREE_LIST node for arguments given as typespecs or names with typespecs,
9943 or void_type_node, to mark the end of an argument list
9944 when additional arguments are not permitted (... was not used).
9946 FUNCDEF_FLAG is nonzero for a function definition, 0 for
9947 a mere declaration. A nonempty identifier-list gets an error message
9948 when FUNCDEF_FLAG is zero.
9949 If FUNCDEF_FLAG is 1, then parameter types must be complete.
9950 If FUNCDEF_FLAG is -1, then parameter types may be incomplete.
9952 If all elements of the input list contain types,
9953 we return a list of the types.
9954 If all elements contain no type (except perhaps a void_type_node
9955 at the end), we return a null list.
9956 If some have types and some do not, it is an error, and we
9959 Also set last_function_parms to either
9960 a list of names (IDENTIFIER_NODEs) or a chain of PARM_DECLs.
9961 A list of names is converted to a chain of PARM_DECLs
9962 by store_parm_decls so that ultimately it is always a chain of decls.
9964 Note that in C++, parameters can take default values. These default
9965 values are in the TREE_PURPOSE field of the TREE_LIST. It is
9966 an error to specify default values which are followed by parameters
9967 that have no default values, or an ELLIPSES. For simplicities sake,
9968 only parameters which are specified with their types can take on
9972 grokparms (first_parm
, funcdef_flag
)
9976 tree result
= NULL_TREE
;
9977 tree decls
= NULL_TREE
;
9979 if (first_parm
!= NULL_TREE
9980 && TREE_CODE (TREE_VALUE (first_parm
)) == IDENTIFIER_NODE
)
9983 pedwarn ("parameter names (without types) in function declaration");
9984 last_function_parms
= first_parm
;
9987 else if (first_parm
!= NULL_TREE
9988 && TREE_CODE (TREE_VALUE (first_parm
)) != TREE_LIST
9989 && TREE_VALUE (first_parm
) != void_type_node
)
9990 my_friendly_abort (145);
9993 /* Types were specified. This is a list of declarators
9994 each represented as a TREE_LIST node. */
9995 register tree parm
, chain
;
9996 int any_init
= 0, any_error
= 0;
9998 if (first_parm
!= NULL_TREE
)
10000 tree last_result
= NULL_TREE
;
10001 tree last_decl
= NULL_TREE
;
10003 for (parm
= first_parm
; parm
!= NULL_TREE
; parm
= chain
)
10005 tree type
, list_node
= parm
;
10006 register tree decl
= TREE_VALUE (parm
);
10007 tree init
= TREE_PURPOSE (parm
);
10009 chain
= TREE_CHAIN (parm
);
10010 /* @@ weak defense against parse errors. */
10011 if (decl
!= void_type_node
&& TREE_CODE (decl
) != TREE_LIST
)
10013 /* Give various messages as the need arises. */
10014 if (TREE_CODE (decl
) == STRING_CST
)
10015 cp_error ("invalid string constant `%E'", decl
);
10016 else if (TREE_CODE (decl
) == INTEGER_CST
)
10017 error ("invalid integer constant in parameter list, did you forget to give parameter name?");
10021 if (decl
!= void_type_node
)
10023 decl
= grokdeclarator (TREE_VALUE (decl
),
10024 TREE_PURPOSE (decl
),
10025 PARM
, init
!= NULL_TREE
,
10029 type
= TREE_TYPE (decl
);
10030 if (TYPE_MAIN_VARIANT (type
) == void_type_node
)
10031 decl
= void_type_node
;
10032 else if (TREE_CODE (type
) == METHOD_TYPE
)
10034 if (DECL_NAME (decl
))
10035 /* Cannot use the decl here because
10036 we don't have DECL_CONTEXT set up yet. */
10037 cp_error ("parameter `%D' invalidly declared method type",
10040 error ("parameter invalidly declared method type");
10041 type
= build_pointer_type (type
);
10042 TREE_TYPE (decl
) = type
;
10044 else if (TREE_CODE (type
) == OFFSET_TYPE
)
10046 if (DECL_NAME (decl
))
10047 cp_error ("parameter `%D' invalidly declared offset type",
10050 error ("parameter invalidly declared offset type");
10051 type
= build_pointer_type (type
);
10052 TREE_TYPE (decl
) = type
;
10054 else if (TREE_CODE (type
) == RECORD_TYPE
10055 && TYPE_LANG_SPECIFIC (type
)
10056 && CLASSTYPE_ABSTRACT_VIRTUALS (type
))
10058 abstract_virtuals_error (decl
, type
);
10059 any_error
= 1; /* seems like a good idea */
10061 else if (TREE_CODE (type
) == RECORD_TYPE
10062 && TYPE_LANG_SPECIFIC (type
)
10063 && IS_SIGNATURE (type
))
10065 signature_error (decl
, type
);
10066 any_error
= 1; /* seems like a good idea */
10070 if (decl
== void_type_node
)
10072 if (result
== NULL_TREE
)
10074 result
= void_list_node
;
10075 last_result
= result
;
10079 TREE_CHAIN (last_result
) = void_list_node
;
10080 last_result
= void_list_node
;
10083 && (chain
!= void_list_node
|| TREE_CHAIN (chain
)))
10084 error ("`void' in parameter list must be entire list");
10088 /* Since there is a prototype, args are passed in their own types. */
10089 DECL_ARG_TYPE (decl
) = TREE_TYPE (decl
);
10090 #ifdef PROMOTE_PROTOTYPES
10091 if ((TREE_CODE (type
) == INTEGER_TYPE
10092 || TREE_CODE (type
) == ENUMERAL_TYPE
)
10093 && TYPE_PRECISION (type
) < TYPE_PRECISION (integer_type_node
))
10094 DECL_ARG_TYPE (decl
) = integer_type_node
;
10101 if (TREE_CODE (init
) == SAVE_EXPR
)
10102 PARM_DECL_EXPR (init
) = 1;
10103 else if (processing_template_decl
)
10105 /* Unparsed default arg from in-class decl. */
10106 else if (TREE_CODE (init
) == DEFAULT_ARG
)
10108 else if (TREE_CODE (init
) == VAR_DECL
10109 || TREE_CODE (init
) == PARM_DECL
)
10111 if (IDENTIFIER_LOCAL_VALUE (DECL_NAME (init
)))
10113 /* ``Local variables may not be used in default
10114 argument expressions.'' dpANSI C++ 8.2.6 */
10115 /* If extern int i; within a function is not
10116 considered a local variable, then this code is
10118 cp_error ("local variable `%D' may not be used as a default argument", init
);
10121 else if (TREE_READONLY_DECL_P (init
))
10122 init
= decl_constant_value (init
);
10125 init
= require_instantiated_type (type
, init
, integer_zero_node
);
10126 if (! processing_template_decl
10127 && TREE_CODE (init
) != DEFAULT_ARG
10128 && ! can_convert_arg (type
, TREE_TYPE (init
), init
))
10129 cp_pedwarn ("invalid type `%T' for default argument to `%#D'",
10130 TREE_TYPE (init
), decl
);
10136 if (decls
== NULL_TREE
)
10143 TREE_CHAIN (last_decl
) = decl
;
10146 if (! current_function_decl
&& TREE_PERMANENT (list_node
))
10148 TREE_PURPOSE (list_node
) = init
;
10149 TREE_VALUE (list_node
) = type
;
10150 TREE_CHAIN (list_node
) = NULL_TREE
;
10153 list_node
= saveable_tree_cons (init
, type
, NULL_TREE
);
10154 if (result
== NULL_TREE
)
10156 result
= list_node
;
10157 last_result
= result
;
10161 TREE_CHAIN (last_result
) = list_node
;
10162 last_result
= list_node
;
10166 TREE_CHAIN (last_result
) = NULL_TREE
;
10167 /* If there are no parameters, and the function does not end
10168 with `...', then last_decl will be NULL_TREE. */
10169 if (last_decl
!= NULL_TREE
)
10170 TREE_CHAIN (last_decl
) = NULL_TREE
;
10174 last_function_parms
= decls
;
10176 /* In a fcn definition, arg types must be complete. */
10177 if (funcdef_flag
> 0)
10178 require_complete_types_for_parms (last_function_parms
);
10183 /* Called from the parser to update an element of TYPE_ARG_TYPES for some
10184 FUNCTION_TYPE with the newly parsed version of its default argument, which
10185 was previously digested as text. See snarf_defarg et al in lex.c. */
10188 replace_defarg (arg
, init
)
10191 if (! processing_template_decl
10192 && ! can_convert_arg (TREE_VALUE (arg
), TREE_TYPE (init
), init
))
10193 cp_pedwarn ("invalid type `%T' for default argument to `%T'",
10194 TREE_TYPE (init
), TREE_VALUE (arg
));
10195 TREE_PURPOSE (arg
) = init
;
10202 tree t
= FUNCTION_ARG_CHAIN (d
);
10203 if (t
&& TREE_CODE (TREE_VALUE (t
)) == REFERENCE_TYPE
10204 && (TYPE_MAIN_VARIANT (TREE_TYPE (TREE_VALUE (t
)))
10205 == DECL_CLASS_CONTEXT (d
))
10206 && (TREE_CHAIN (t
) == NULL_TREE
10207 || TREE_CHAIN (t
) == void_list_node
10208 || TREE_PURPOSE (TREE_CHAIN (t
))))
10213 /* These memoizing functions keep track of special properties which
10214 a class may have. `grok_ctor_properties' notices whether a class
10215 has a constructor of the form X(X&), and also complains
10216 if the class has a constructor of the form X(X).
10217 `grok_op_properties' takes notice of the various forms of
10218 operator= which are defined, as well as what sorts of type conversion
10219 may apply. Both functions take a FUNCTION_DECL as an argument. */
10222 grok_ctor_properties (ctype
, decl
)
10225 tree parmtypes
= FUNCTION_ARG_CHAIN (decl
);
10226 tree parmtype
= parmtypes
? TREE_VALUE (parmtypes
) : void_type_node
;
10228 /* When a type has virtual baseclasses, a magical first int argument is
10229 added to any ctor so we can tell if the class has been initialized
10230 yet. This could screw things up in this function, so we deliberately
10231 ignore the leading int if we're in that situation. */
10233 && TREE_VALUE (parmtypes
) == integer_type_node
10234 && TYPE_USES_VIRTUAL_BASECLASSES (ctype
))
10236 parmtypes
= TREE_CHAIN (parmtypes
);
10237 parmtype
= TREE_VALUE (parmtypes
);
10240 if (TREE_CODE (parmtype
) == REFERENCE_TYPE
10241 && TYPE_MAIN_VARIANT (TREE_TYPE (parmtype
)) == ctype
)
10243 if (TREE_CHAIN (parmtypes
) == NULL_TREE
10244 || TREE_CHAIN (parmtypes
) == void_list_node
10245 || TREE_PURPOSE (TREE_CHAIN (parmtypes
)))
10247 TYPE_HAS_INIT_REF (ctype
) = 1;
10248 if (TYPE_READONLY (TREE_TYPE (parmtype
)))
10249 TYPE_HAS_CONST_INIT_REF (ctype
) = 1;
10252 TYPE_GETS_INIT_AGGR (ctype
) = 1;
10254 else if (TYPE_MAIN_VARIANT (parmtype
) == ctype
)
10256 if (TREE_CHAIN (parmtypes
) != NULL_TREE
10257 && TREE_CHAIN (parmtypes
) == void_list_node
)
10259 cp_error ("invalid constructor; you probably meant `%T (const %T&)'",
10261 SET_IDENTIFIER_ERROR_LOCUS (DECL_NAME (decl
), ctype
);
10266 TYPE_GETS_INIT_AGGR (ctype
) = 1;
10268 else if (TREE_CODE (parmtype
) == VOID_TYPE
10269 || TREE_PURPOSE (parmtypes
) != NULL_TREE
)
10270 TYPE_HAS_DEFAULT_CONSTRUCTOR (ctype
) = 1;
10275 /* An operator with this name can be either unary or binary. */
10281 return (name
== ansi_opname
[(int) INDIRECT_REF
]
10282 || name
== ansi_opname
[(int) ADDR_EXPR
]
10283 || name
== ansi_opname
[(int) NEGATE_EXPR
]
10284 || name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
10285 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]
10286 || name
== ansi_opname
[(int) CONVERT_EXPR
]);
10289 /* An operator with this name can only be unary. */
10295 return (name
== ansi_opname
[(int) TRUTH_NOT_EXPR
]
10296 || name
== ansi_opname
[(int) BIT_NOT_EXPR
]
10297 || name
== ansi_opname
[(int) COMPONENT_REF
]
10298 || OPERATOR_TYPENAME_P (name
));
10301 /* Do a little sanity-checking on how they declared their operator. */
10304 grok_op_properties (decl
, virtualp
, friendp
)
10306 int virtualp
, friendp
;
10308 tree argtypes
= TYPE_ARG_TYPES (TREE_TYPE (decl
));
10309 int methodp
= (TREE_CODE (TREE_TYPE (decl
)) == METHOD_TYPE
);
10310 tree name
= DECL_NAME (decl
);
10312 if (current_class_type
== NULL_TREE
)
10317 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
10318 TYPE_HAS_ASSIGNMENT (current_class_type
) = 1;
10319 else if (name
== ansi_opname
[(int) CALL_EXPR
])
10320 TYPE_OVERLOADS_CALL_EXPR (current_class_type
) = 1;
10321 else if (name
== ansi_opname
[(int) ARRAY_REF
])
10322 TYPE_OVERLOADS_ARRAY_REF (current_class_type
) = 1;
10323 else if (name
== ansi_opname
[(int) COMPONENT_REF
]
10324 || name
== ansi_opname
[(int) MEMBER_REF
])
10325 TYPE_OVERLOADS_ARROW (current_class_type
) = 1;
10326 else if (name
== ansi_opname
[(int) NEW_EXPR
])
10327 TYPE_GETS_NEW (current_class_type
) |= 1;
10328 else if (name
== ansi_opname
[(int) DELETE_EXPR
])
10329 TYPE_GETS_DELETE (current_class_type
) |= 1;
10330 else if (name
== ansi_opname
[(int) VEC_NEW_EXPR
])
10331 TYPE_GETS_NEW (current_class_type
) |= 2;
10332 else if (name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10333 TYPE_GETS_DELETE (current_class_type
) |= 2;
10336 if (name
== ansi_opname
[(int) NEW_EXPR
]
10337 || name
== ansi_opname
[(int) VEC_NEW_EXPR
])
10339 /* When the compiler encounters the definition of A::operator new, it
10340 doesn't look at the class declaration to find out if it's static. */
10342 revert_static_member_fn (&decl
, NULL
, NULL
);
10344 /* Take care of function decl if we had syntax errors. */
10345 if (argtypes
== NULL_TREE
)
10347 = build_function_type (ptr_type_node
,
10348 hash_tree_chain (integer_type_node
,
10351 TREE_TYPE (decl
) = coerce_new_type (TREE_TYPE (decl
));
10353 else if (name
== ansi_opname
[(int) DELETE_EXPR
]
10354 || name
== ansi_opname
[(int) VEC_DELETE_EXPR
])
10357 revert_static_member_fn (&decl
, NULL
, NULL
);
10359 if (argtypes
== NULL_TREE
)
10361 = build_function_type (void_type_node
,
10362 hash_tree_chain (ptr_type_node
,
10366 TREE_TYPE (decl
) = coerce_delete_type (TREE_TYPE (decl
));
10368 if (! friendp
&& name
== ansi_opname
[(int) VEC_DELETE_EXPR
]
10369 && (TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (decl
)))
10370 != void_list_node
))
10371 TYPE_VEC_DELETE_TAKES_SIZE (current_class_type
) = 1;
10376 /* An operator function must either be a non-static member function
10377 or have at least one parameter of a class, a reference to a class,
10378 an enumeration, or a reference to an enumeration. 13.4.0.6 */
10379 if (! methodp
|| DECL_STATIC_FUNCTION_P (decl
))
10381 if (OPERATOR_TYPENAME_P (name
)
10382 || name
== ansi_opname
[(int) CALL_EXPR
]
10383 || name
== ansi_opname
[(int) MODIFY_EXPR
]
10384 || name
== ansi_opname
[(int) COMPONENT_REF
]
10385 || name
== ansi_opname
[(int) ARRAY_REF
])
10386 cp_error ("`%D' must be a nonstatic member function", decl
);
10391 if (DECL_STATIC_FUNCTION_P (decl
))
10392 cp_error ("`%D' must be either a non-static member function or a non-member function", decl
);
10395 for (; TREE_VALUE (p
) != void_type_node
; p
= TREE_CHAIN (p
))
10397 tree arg
= TREE_VALUE (p
);
10398 if (TREE_CODE (arg
) == REFERENCE_TYPE
)
10399 arg
= TREE_TYPE (arg
);
10401 /* This lets bad template code slip through. */
10402 if (IS_AGGR_TYPE (arg
)
10403 || TREE_CODE (arg
) == ENUMERAL_TYPE
10404 || TREE_CODE (arg
) == TEMPLATE_TYPE_PARM
)
10408 ("`%D' must have an argument of class or enumerated type",
10415 if (name
== ansi_opname
[(int) CALL_EXPR
]
10416 || name
== ansi_opname
[(int) METHOD_CALL_EXPR
])
10417 return; /* no restrictions on args */
10419 if (IDENTIFIER_TYPENAME_P (name
) && ! DECL_TEMPLATE_INFO (decl
))
10421 tree t
= TREE_TYPE (name
);
10422 if (TREE_CODE (t
) == VOID_TYPE
)
10423 pedwarn ("void is not a valid type conversion operator");
10424 else if (! friendp
)
10426 int ref
= (TREE_CODE (t
) == REFERENCE_TYPE
);
10429 t
= TYPE_MAIN_VARIANT (TREE_TYPE (t
));
10431 if (t
== current_class_type
)
10432 what
= "the same type";
10433 /* Don't force t to be complete here. */
10434 else if (IS_AGGR_TYPE (t
)
10436 && DERIVED_FROM_P (t
, current_class_type
))
10437 what
= "a base class";
10440 warning ("conversion to %s%s will never use a type conversion operator",
10441 ref
? "a reference to " : "", what
);
10445 if (name
== ansi_opname
[(int) MODIFY_EXPR
])
10449 if (list_length (argtypes
) != 3 && methodp
)
10451 cp_error ("`%D' must take exactly one argument", decl
);
10454 parmtype
= TREE_VALUE (TREE_CHAIN (argtypes
));
10456 if (copy_assignment_arg_p (parmtype
, virtualp
)
10459 TYPE_HAS_ASSIGN_REF (current_class_type
) = 1;
10460 if (TREE_CODE (parmtype
) != REFERENCE_TYPE
10461 || TYPE_READONLY (TREE_TYPE (parmtype
)))
10462 TYPE_HAS_CONST_ASSIGN_REF (current_class_type
) = 1;
10465 else if (name
== ansi_opname
[(int) COND_EXPR
])
10468 pedwarn ("ANSI C++ prohibits overloading operator ?:");
10469 if (list_length (argtypes
) != 4)
10470 cp_error ("`%D' must take exactly three arguments", decl
);
10472 else if (ambi_op_p (name
))
10474 if (list_length (argtypes
) == 2)
10476 else if (list_length (argtypes
) == 3)
10478 if ((name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
10479 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
10480 && ! processing_template_decl
10481 && TREE_VALUE (TREE_CHAIN (argtypes
)) != integer_type_node
)
10484 cp_error ("postfix `%D' must take `int' as its argument",
10488 ("postfix `%D' must take `int' as its second argument",
10495 cp_error ("`%D' must take either zero or one argument", decl
);
10497 cp_error ("`%D' must take either one or two arguments", decl
);
10500 /* More Effective C++ rule 6. */
10502 && (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
10503 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
]))
10505 tree arg
= TREE_VALUE (argtypes
);
10506 tree ret
= TREE_TYPE (TREE_TYPE (decl
));
10507 if (methodp
|| TREE_CODE (arg
) == REFERENCE_TYPE
)
10508 arg
= TREE_TYPE (arg
);
10509 arg
= TYPE_MAIN_VARIANT (arg
);
10510 if (list_length (argtypes
) == 2)
10512 if (TREE_CODE (ret
) != REFERENCE_TYPE
10513 || !comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (ret
)),
10515 cp_warning ("prefix `%D' should return `%T'", decl
,
10516 build_reference_type (arg
));
10520 if (!comptypes (TYPE_MAIN_VARIANT (ret
), arg
, 1))
10521 cp_warning ("postfix `%D' should return `%T'", decl
, arg
);
10525 else if (unary_op_p (name
))
10527 if (list_length (argtypes
) != 2)
10530 cp_error ("`%D' must take `void'", decl
);
10532 cp_error ("`%D' must take exactly one argument", decl
);
10535 else /* if (binary_op_p (name)) */
10537 if (list_length (argtypes
) != 3)
10540 cp_error ("`%D' must take exactly one argument", decl
);
10542 cp_error ("`%D' must take exactly two arguments", decl
);
10545 /* More Effective C++ rule 7. */
10547 && (name
== ansi_opname
[TRUTH_ANDIF_EXPR
]
10548 || name
== ansi_opname
[TRUTH_ORIF_EXPR
]
10549 || name
== ansi_opname
[COMPOUND_EXPR
]))
10550 cp_warning ("user-defined `%D' always evaluates both arguments",
10554 /* Effective C++ rule 23. */
10556 && list_length (argtypes
) == 3
10557 && (name
== ansi_opname
[PLUS_EXPR
]
10558 || name
== ansi_opname
[MINUS_EXPR
]
10559 || name
== ansi_opname
[TRUNC_DIV_EXPR
]
10560 || name
== ansi_opname
[MULT_EXPR
])
10561 && TREE_CODE (TREE_TYPE (TREE_TYPE (decl
))) == REFERENCE_TYPE
)
10562 cp_warning ("`%D' should return by value", decl
);
10566 for (; argtypes
!= void_list_node
; argtypes
= TREE_CHAIN (argtypes
))
10567 if (TREE_PURPOSE (argtypes
))
10569 TREE_PURPOSE (argtypes
) = NULL_TREE
;
10570 if (name
== ansi_opname
[(int) POSTINCREMENT_EXPR
]
10571 || name
== ansi_opname
[(int) POSTDECREMENT_EXPR
])
10574 cp_pedwarn ("`%D' cannot have default arguments", decl
);
10577 cp_error ("`%D' cannot have default arguments", decl
);
10582 /* Get the struct, enum or union (CODE says which) with tag NAME.
10583 Define the tag as a forward-reference if it is not defined.
10585 C++: If a class derivation is given, process it here, and report
10586 an error if multiple derivation declarations are not identical.
10588 If this is a definition, come in through xref_tag and only look in
10589 the current frame for the name (since C++ allows new names in any
10593 xref_tag (code_type_node
, name
, binfo
, globalize
)
10594 tree code_type_node
;
10598 enum tag_types tag_code
;
10599 enum tree_code code
;
10601 register tree ref
, t
;
10602 struct binding_level
*b
= inner_binding_level
;
10605 tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
10610 case signature_type
:
10611 code
= RECORD_TYPE
;
10617 code
= ENUMERAL_TYPE
;
10620 my_friendly_abort (18);
10623 /* If a cross reference is requested, look up the type
10624 already defined for this tag and return it. */
10625 if (TREE_CODE_CLASS (TREE_CODE (name
)) == 't')
10628 name
= TYPE_IDENTIFIER (t
);
10632 t
= IDENTIFIER_TYPE_VALUE (name
);
10633 if (t
&& TREE_CODE (t
) != code
&& TREE_CODE (t
) != TEMPLATE_TYPE_PARM
)
10638 if (pedantic
&& t
&& TREE_CODE (t
) == TEMPLATE_TYPE_PARM
)
10640 cp_pedwarn ("redeclaration of template type-parameter `%T'", name
);
10641 cp_pedwarn_at (" previously declared here", t
);
10643 if (t
&& TYPE_CONTEXT (t
) && got_type
)
10647 /* If we know we are defining this tag, only look it up in
10648 this scope and don't try to find it as a type. */
10649 ref
= lookup_tag (code
, name
, b
, 1);
10657 ref
= lookup_tag (code
, name
, b
, 0);
10661 /* Try finding it as a type declaration. If that wins, use it. */
10662 ref
= lookup_name (name
, 1);
10663 if (ref
&& TREE_CODE (ref
) == TYPE_DECL
10664 && TREE_CODE (TREE_TYPE (ref
)) == code
)
10665 ref
= TREE_TYPE (ref
);
10671 push_obstacks_nochange ();
10675 /* If no such tag is yet defined, create a forward-reference node
10676 and record it as the "definition".
10677 When a real declaration of this type is found,
10678 the forward-reference will be altered into a real type. */
10680 /* In C++, since these migrate into the global scope, we must
10681 build them on the permanent obstack. */
10683 temp
= allocation_temporary_p ();
10685 end_temporary_allocation ();
10687 if (code
== ENUMERAL_TYPE
)
10689 cp_error ("use of enum `%#D' without previous declaration", name
);
10691 ref
= make_node (ENUMERAL_TYPE
);
10693 /* Give the type a default layout like unsigned int
10694 to avoid crashing if it does not get defined. */
10695 TYPE_MODE (ref
) = TYPE_MODE (unsigned_type_node
);
10696 TYPE_ALIGN (ref
) = TYPE_ALIGN (unsigned_type_node
);
10697 TREE_UNSIGNED (ref
) = 1;
10698 TYPE_PRECISION (ref
) = TYPE_PRECISION (unsigned_type_node
);
10699 TYPE_MIN_VALUE (ref
) = TYPE_MIN_VALUE (unsigned_type_node
);
10700 TYPE_MAX_VALUE (ref
) = TYPE_MAX_VALUE (unsigned_type_node
);
10702 /* Enable us to recognize when a type is created in class context.
10703 To do nested classes correctly, this should probably be cleared
10704 out when we leave this classes scope. Currently this in only
10705 done in `start_enum'. */
10707 pushtag (name
, ref
, globalize
);
10711 struct binding_level
*old_b
= class_binding_level
;
10713 ref
= make_lang_type (code
);
10715 if (tag_code
== signature_type
)
10717 SET_SIGNATURE (ref
);
10718 /* Since a signature type will be turned into the type
10719 of signature tables, it's not only an interface. */
10720 CLASSTYPE_INTERFACE_ONLY (ref
) = 0;
10721 SET_CLASSTYPE_INTERFACE_KNOWN (ref
);
10722 /* A signature doesn't have a vtable. */
10723 CLASSTYPE_VTABLE_NEEDS_WRITING (ref
) = 0;
10726 #ifdef NONNESTED_CLASSES
10727 /* Class types don't nest the way enums do. */
10728 class_binding_level
= (struct binding_level
*)0;
10730 pushtag (name
, ref
, globalize
);
10731 class_binding_level
= old_b
;
10736 /* If it no longer looks like a nested type, make sure it's
10737 in global scope. */
10738 if (b
== global_binding_level
&& !class_binding_level
10739 && IDENTIFIER_GLOBAL_VALUE (name
) == NULL_TREE
)
10740 IDENTIFIER_GLOBAL_VALUE (name
) = TYPE_NAME (ref
);
10744 xref_basetypes (code_type_node
, name
, ref
, binfo
);
10748 /* Until the type is defined, tentatively accept whatever
10749 structure tag the user hands us. */
10750 if (TYPE_SIZE (ref
) == NULL_TREE
10751 && ref
!= current_class_type
10752 /* Have to check this, in case we have contradictory tag info. */
10753 && IS_AGGR_TYPE_CODE (TREE_CODE (ref
)))
10755 if (tag_code
== class_type
)
10756 CLASSTYPE_DECLARED_CLASS (ref
) = 1;
10757 else if (tag_code
== record_type
|| tag_code
== signature_type
)
10758 CLASSTYPE_DECLARED_CLASS (ref
) = 0;
10767 xref_tag_from_type (old
, id
, globalize
)
10771 tree code_type_node
;
10773 if (TREE_CODE (old
) == RECORD_TYPE
)
10774 code_type_node
= (CLASSTYPE_DECLARED_CLASS (old
)
10775 ? class_type_node
: record_type_node
);
10777 code_type_node
= union_type_node
;
10779 if (id
== NULL_TREE
)
10780 id
= TYPE_IDENTIFIER (old
);
10782 return xref_tag (code_type_node
, id
, NULL_TREE
, globalize
);
10786 xref_basetypes (code_type_node
, name
, ref
, binfo
)
10787 tree code_type_node
;
10791 /* In the declaration `A : X, Y, ... Z' we mark all the types
10792 (A, X, Y, ..., Z) so we can check for duplicates. */
10795 enum tag_types tag_code
= (enum tag_types
) TREE_INT_CST_LOW (code_type_node
);
10797 if (tag_code
== union_type
)
10799 cp_error ("derived union `%T' invalid", ref
);
10803 len
= list_length (binfo
);
10804 push_obstacks (TYPE_OBSTACK (ref
), TYPE_OBSTACK (ref
));
10806 SET_CLASSTYPE_MARKED (ref
);
10807 BINFO_BASETYPES (TYPE_BINFO (ref
)) = binfos
= make_tree_vec (len
);
10809 for (i
= 0; binfo
; binfo
= TREE_CHAIN (binfo
))
10811 /* The base of a derived struct is public by default. */
10813 = (TREE_PURPOSE (binfo
) == access_public_node
10814 || TREE_PURPOSE (binfo
) == access_public_virtual_node
10815 || (tag_code
!= class_type
10816 && (TREE_PURPOSE (binfo
) == access_default_node
10817 || TREE_PURPOSE (binfo
) == access_default_virtual_node
)));
10818 int via_protected
= TREE_PURPOSE (binfo
) == access_protected_node
;
10820 = (TREE_PURPOSE (binfo
) == access_private_virtual_node
10821 || TREE_PURPOSE (binfo
) == access_public_virtual_node
10822 || TREE_PURPOSE (binfo
) == access_default_virtual_node
);
10823 tree basetype
= TREE_VALUE (binfo
);
10826 GNU_xref_hier (IDENTIFIER_POINTER (name
),
10827 IDENTIFIER_POINTER (TREE_VALUE (binfo
)),
10828 via_public
, via_virtual
, 0);
10830 if (basetype
&& TREE_CODE (basetype
) == TYPE_DECL
)
10831 basetype
= TREE_TYPE (basetype
);
10833 || (TREE_CODE (basetype
) != RECORD_TYPE
10834 && TREE_CODE (basetype
) != TYPENAME_TYPE
10835 && TREE_CODE (basetype
) != TEMPLATE_TYPE_PARM
))
10837 cp_error ("base type `%T' fails to be a struct or class type",
10838 TREE_VALUE (binfo
));
10842 /* This code replaces similar code in layout_basetypes. */
10843 else if (TYPE_SIZE (complete_type (basetype
)) == NULL_TREE
10844 && ! (current_template_parms
&& uses_template_parms (basetype
)))
10846 cp_error ("base class `%T' has incomplete type", basetype
);
10852 if (CLASSTYPE_MARKED (basetype
))
10854 if (basetype
== ref
)
10855 cp_error ("recursive type `%T' undefined", basetype
);
10857 cp_error ("duplicate base type `%T' invalid", basetype
);
10861 /* Note that the BINFO records which describe individual
10862 inheritances are *not* shared in the lattice! They
10863 cannot be shared because a given baseclass may be
10864 inherited with different `accessibility' by different
10865 derived classes. (Each BINFO record describing an
10866 individual inheritance contains flags which say what
10867 the `accessibility' of that particular inheritance is.) */
10869 base_binfo
= make_binfo (integer_zero_node
, basetype
,
10870 TYPE_BINFO_VTABLE (basetype
),
10871 TYPE_BINFO_VIRTUALS (basetype
), NULL_TREE
);
10873 TREE_VEC_ELT (binfos
, i
) = base_binfo
;
10874 TREE_VIA_PUBLIC (base_binfo
) = via_public
;
10875 TREE_VIA_PROTECTED (base_binfo
) = via_protected
;
10876 TREE_VIA_VIRTUAL (base_binfo
) = via_virtual
;
10877 BINFO_INHERITANCE_CHAIN (base_binfo
) = TYPE_BINFO (ref
);
10879 SET_CLASSTYPE_MARKED (basetype
);
10881 /* We are free to modify these bits because they are meaningless
10882 at top level, and BASETYPE is a top-level type. */
10883 if (via_virtual
|| TYPE_USES_VIRTUAL_BASECLASSES (basetype
))
10885 TYPE_USES_VIRTUAL_BASECLASSES (ref
) = 1;
10886 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
10889 TYPE_OVERLOADS_METHOD_CALL_EXPR (ref
) |= TYPE_OVERLOADS_METHOD_CALL_EXPR (basetype
);
10890 TYPE_GETS_NEW (ref
) |= TYPE_GETS_NEW (basetype
);
10891 TYPE_GETS_DELETE (ref
) |= TYPE_GETS_DELETE (basetype
);
10892 CLASSTYPE_LOCAL_TYPEDECLS (ref
) |= CLASSTYPE_LOCAL_TYPEDECLS (basetype
);
10897 TREE_VEC_LENGTH (binfos
) = i
;
10899 BINFO_BASETYPES (TYPE_BINFO (ref
)) = NULL_TREE
;
10902 TYPE_USES_MULTIPLE_INHERITANCE (ref
) = 1;
10904 TYPE_USES_MULTIPLE_INHERITANCE (ref
)
10905 = TYPE_USES_MULTIPLE_INHERITANCE (BINFO_TYPE (TREE_VEC_ELT (binfos
, 0)));
10906 if (TYPE_USES_MULTIPLE_INHERITANCE (ref
))
10907 TYPE_USES_COMPLEX_INHERITANCE (ref
) = 1;
10909 /* Unmark all the types. */
10911 CLEAR_CLASSTYPE_MARKED (BINFO_TYPE (TREE_VEC_ELT (binfos
, i
)));
10912 CLEAR_CLASSTYPE_MARKED (ref
);
10918 tree current_local_enum
= NULL_TREE
;
10920 /* Begin compiling the definition of an enumeration type.
10921 NAME is its name (or null if anonymous).
10922 Returns the type object, as yet incomplete.
10923 Also records info about it so that build_enumerator
10924 may be used to declare the individual values as they are read. */
10930 register tree enumtype
= NULL_TREE
;
10931 struct binding_level
*b
= inner_binding_level
;
10933 if (processing_template_decl
&& current_function_decl
)
10934 end_temporary_allocation ();
10936 /* If this is the real definition for a previous forward reference,
10937 fill in the contents in the same object that used to be the
10938 forward reference. */
10940 if (name
!= NULL_TREE
)
10941 enumtype
= lookup_tag (ENUMERAL_TYPE
, name
, b
, 1);
10943 if (enumtype
!= NULL_TREE
&& TREE_CODE (enumtype
) == ENUMERAL_TYPE
)
10944 cp_error ("multiple definition of `%#T'", enumtype
);
10947 enumtype
= make_node (ENUMERAL_TYPE
);
10948 pushtag (name
, enumtype
, 0);
10951 if (b
->pseudo_global
)
10952 cp_error ("template declaration of `%#T'", enumtype
);
10954 if (current_class_type
)
10955 TREE_ADDRESSABLE (b
->tags
) = 1;
10957 current_local_enum
= NULL_TREE
;
10959 /* We don't copy this value because build_enumerator needs to do it. */
10960 enum_next_value
= integer_zero_node
;
10963 GNU_xref_decl (current_function_decl
, enumtype
);
10967 /* After processing and defining all the values of an enumeration type,
10968 install their decls in the enumeration type and finish it off.
10969 ENUMTYPE is the type object and VALUES a list of name-value pairs.
10970 Returns ENUMTYPE. */
10973 finish_enum (enumtype
, values
)
10974 register tree enumtype
, values
;
10976 register tree minnode
, maxnode
;
10977 /* Calculate the maximum value of any enumerator in this type. */
10981 register tree pair
;
10982 register tree value
= DECL_INITIAL (TREE_VALUE (values
));
10984 if (! processing_template_decl
)
10986 /* Speed up the main loop by performing some precalculations */
10987 TREE_TYPE (TREE_VALUE (values
)) = enumtype
;
10988 TREE_TYPE (value
) = enumtype
;
10989 minnode
= maxnode
= value
;
10991 TREE_VALUE (values
) = value
;
10993 for (pair
= TREE_CHAIN (values
); pair
; pair
= TREE_CHAIN (pair
))
10995 value
= DECL_INITIAL (TREE_VALUE (pair
));
10996 if (! processing_template_decl
)
10998 TREE_TYPE (TREE_VALUE (pair
)) = enumtype
;
10999 TREE_TYPE (value
) = enumtype
;
11000 if (tree_int_cst_lt (maxnode
, value
))
11002 else if (tree_int_cst_lt (value
, minnode
))
11005 TREE_VALUE (pair
) = value
;
11009 maxnode
= minnode
= integer_zero_node
;
11011 TYPE_VALUES (enumtype
) = nreverse (values
);
11013 if (processing_template_decl
)
11015 if (current_function_decl
)
11017 add_tree (build_min (TAG_DEFN
, enumtype
));
11018 resume_temporary_allocation ();
11024 int unsignedp
= tree_int_cst_sgn (minnode
) >= 0;
11025 int lowprec
= min_precision (minnode
, unsignedp
);
11026 int highprec
= min_precision (maxnode
, unsignedp
);
11027 int precision
= MAX (lowprec
, highprec
);
11029 TYPE_SIZE (enumtype
) = NULL_TREE
;
11031 /* Set TYPE_MIN_VALUE and TYPE_MAX_VALUE according to `precision'. */
11033 TYPE_PRECISION (enumtype
) = precision
;
11035 fixup_unsigned_type (enumtype
);
11037 fixup_signed_type (enumtype
);
11039 if (flag_short_enums
|| (precision
> TYPE_PRECISION (integer_type_node
)))
11040 /* Use the width of the narrowest normal C type which is wide enough. */
11041 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (type_for_size
11044 TYPE_PRECISION (enumtype
) = TYPE_PRECISION (integer_type_node
);
11046 TYPE_SIZE (enumtype
) = 0;
11047 layout_type (enumtype
);
11053 /* Fix up all variant types of this enum type. */
11054 for (tem
= TYPE_MAIN_VARIANT (enumtype
); tem
;
11055 tem
= TYPE_NEXT_VARIANT (tem
))
11057 TYPE_VALUES (tem
) = TYPE_VALUES (enumtype
);
11058 TYPE_MIN_VALUE (tem
) = TYPE_MIN_VALUE (enumtype
);
11059 TYPE_MAX_VALUE (tem
) = TYPE_MAX_VALUE (enumtype
);
11060 TYPE_SIZE (tem
) = TYPE_SIZE (enumtype
);
11061 TYPE_MODE (tem
) = TYPE_MODE (enumtype
);
11062 TYPE_PRECISION (tem
) = TYPE_PRECISION (enumtype
);
11063 TYPE_ALIGN (tem
) = TYPE_ALIGN (enumtype
);
11064 TREE_UNSIGNED (tem
) = TREE_UNSIGNED (enumtype
);
11068 /* Finish debugging output for this type. */
11069 rest_of_type_compilation (enumtype
, global_bindings_p ());
11074 /* Build and install a CONST_DECL for one value of the
11075 current enumeration type (one that was begun with start_enum).
11076 Return a tree-list containing the name and its value.
11077 Assignment of sequential values by default is handled here. */
11080 build_enumerator (name
, value
)
11085 /* Remove no-op casts from the value. */
11087 STRIP_TYPE_NOPS (value
);
11089 if (! processing_template_decl
)
11091 /* Validate and default VALUE. */
11092 if (value
!= NULL_TREE
)
11094 if (TREE_READONLY_DECL_P (value
))
11095 value
= decl_constant_value (value
);
11097 if (TREE_CODE (value
) == INTEGER_CST
)
11099 value
= default_conversion (value
);
11100 constant_expression_warning (value
);
11104 cp_error ("enumerator value for `%D' not integer constant", name
);
11109 /* Default based on previous value. */
11110 if (value
== NULL_TREE
&& ! processing_template_decl
)
11112 value
= enum_next_value
;
11114 cp_error ("overflow in enumeration values at `%D'", name
);
11117 /* Remove no-op casts from the value. */
11119 STRIP_TYPE_NOPS (value
);
11121 /* We have to always copy here; not all INTEGER_CSTs are unshared,
11122 and there's no wedding ring. Look at size_int()...*/
11123 value
= copy_node (value
);
11125 /* To fix MAX_VAL enum consts. (bkoz) */
11126 TREE_TYPE (value
) = integer_type_node
;
11130 /* C++ associates enums with global, function, or class declarations. */
11132 decl
= current_scope ();
11133 if (decl
&& decl
== current_class_type
)
11135 /* This enum declaration is local to the class, so we must put
11136 it in that class's list of decls. */
11137 decl
= build_lang_field_decl (CONST_DECL
, name
, integer_type_node
);
11138 DECL_INITIAL (decl
) = value
;
11139 TREE_READONLY (decl
) = 1;
11140 pushdecl_class_level (decl
);
11141 TREE_CHAIN (decl
) = current_local_enum
;
11142 current_local_enum
= decl
;
11146 /* It's a global enum, or it's local to a function. (Note local to
11147 a function could mean local to a class method. */
11148 decl
= build_decl (CONST_DECL
, name
, integer_type_node
);
11149 DECL_INITIAL (decl
) = value
;
11150 TREE_READONLY (decl
) = 1;
11153 GNU_xref_decl (current_function_decl
, decl
);
11156 if (! processing_template_decl
)
11158 /* Set basis for default for next value. */
11159 enum_next_value
= build_binary_op_nodefault (PLUS_EXPR
, value
,
11160 integer_one_node
, PLUS_EXPR
);
11161 enum_overflow
= tree_int_cst_lt (enum_next_value
, value
);
11164 result
= saveable_tree_cons (name
, decl
, NULL_TREE
);
11169 grok_enum_decls (type
, decl
)
11172 tree d
= current_local_enum
;
11174 if (d
== NULL_TREE
)
11179 TREE_TYPE (d
) = type
;
11180 if (TREE_CHAIN (d
) == NULL_TREE
)
11182 TREE_CHAIN (d
) = decl
;
11185 d
= TREE_CHAIN (d
);
11188 decl
= current_local_enum
;
11189 current_local_enum
= NULL_TREE
;
11194 static int function_depth
;
11196 /* Create the FUNCTION_DECL for a function definition.
11197 DECLSPECS and DECLARATOR are the parts of the declaration;
11198 they describe the function's name and the type it returns,
11199 but twisted together in a fashion that parallels the syntax of C.
11201 This function creates a binding context for the function body
11202 as well as setting up the FUNCTION_DECL in current_function_decl.
11204 Returns 1 on success. If the DECLARATOR is not suitable for a function
11205 (it defines a datum instead), we return 0, which tells
11206 yyparse to report a parse error.
11208 For C++, we must first check whether that datum makes any sense.
11209 For example, "class A local_a(1,2);" means that variable local_a
11210 is an aggregate of type A, which should have a constructor
11211 applied to it with the argument list [1, 2].
11213 @@ There is currently no way to retrieve the storage
11214 @@ allocated to FUNCTION (or all of its parms) if we return
11215 @@ something we had previously. */
11218 start_function (declspecs
, declarator
, attrs
, pre_parsed_p
)
11219 tree declspecs
, declarator
, attrs
;
11223 tree ctype
= NULL_TREE
;
11226 extern int have_extern_spec
;
11227 extern int used_extern_spec
;
11228 int doing_friend
= 0;
11230 /* Sanity check. */
11231 my_friendly_assert (TREE_VALUE (void_list_node
) == void_type_node
, 160);
11232 my_friendly_assert (TREE_CHAIN (void_list_node
) == NULL_TREE
, 161);
11234 /* Assume, until we see it does. */
11235 current_function_returns_value
= 0;
11236 current_function_returns_null
= 0;
11237 warn_about_return_type
= 0;
11239 shadowed_labels
= 0;
11240 current_function_assigns_this
= 0;
11241 current_function_just_assigned_this
= 0;
11242 current_function_parms_stored
= 0;
11243 original_result_rtx
= NULL_RTX
;
11244 base_init_expr
= NULL_TREE
;
11245 current_base_init_list
= NULL_TREE
;
11246 current_member_init_list
= NULL_TREE
;
11247 ctor_label
= dtor_label
= NULL_TREE
;
11248 static_labelno
= 0;
11250 clear_temp_name ();
11252 /* This should only be done once on the top most decl. */
11253 if (have_extern_spec
&& !used_extern_spec
)
11255 declspecs
= decl_tree_cons (NULL_TREE
, get_identifier ("extern"), declspecs
);
11256 used_extern_spec
= 1;
11261 decl1
= declarator
;
11263 if (! DECL_ARGUMENTS (decl1
)
11264 && !DECL_STATIC_FUNCTION_P (decl1
)
11265 && DECL_CONTEXT (decl1
)
11266 && TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))
11267 && IDENTIFIER_TEMPLATE (TYPE_IDENTIFIER (DECL_CONTEXT (decl1
))))
11269 cp_error ("redeclaration of `%#D'", decl1
);
11270 if (IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)))
11271 cp_error_at ("previous declaration here", IDENTIFIER_CLASS_VALUE (DECL_NAME (decl1
)));
11272 else if (IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1
)))
11273 cp_error_at ("previous declaration here", IDENTIFIER_GLOBAL_VALUE (DECL_NAME (decl1
)));
11276 fntype
= TREE_TYPE (decl1
);
11277 if (TREE_CODE (fntype
) == METHOD_TYPE
)
11278 ctype
= TYPE_METHOD_BASETYPE (fntype
);
11280 /* ANSI C++ June 5 1992 WP 11.4.5. A friend function defined in a
11281 class is in the (lexical) scope of the class in which it is
11283 if (!ctype
&& DECL_FRIEND_P (decl1
))
11285 ctype
= DECL_CLASS_CONTEXT (decl1
);
11287 /* CTYPE could be null here if we're dealing with a template;
11288 for example, `inline friend float foo()' inside a template
11289 will have no CTYPE set. */
11290 if (ctype
&& TREE_CODE (ctype
) != RECORD_TYPE
)
11296 /* In a fcn definition, arg types must be complete. */
11297 require_complete_types_for_parms (DECL_ARGUMENTS (decl1
));
11299 /* In case some arg types were completed since the declaration was
11300 parsed, fix up the decls. */
11302 tree t
= DECL_ARGUMENTS (decl1
);
11303 for (; t
; t
= TREE_CHAIN (t
))
11304 layout_decl (t
, 0);
11307 last_function_parms
= DECL_ARGUMENTS (decl1
);
11308 last_function_parm_tags
= NULL_TREE
;
11312 decl1
= grokdeclarator (declarator
, declspecs
, FUNCDEF
, 1, NULL_TREE
);
11313 /* If the declarator is not suitable for a function definition,
11314 cause a syntax error. */
11315 if (decl1
== NULL_TREE
|| TREE_CODE (decl1
) != FUNCTION_DECL
) return 0;
11317 fntype
= TREE_TYPE (decl1
);
11319 restype
= TREE_TYPE (fntype
);
11320 if (IS_AGGR_TYPE (restype
) && ! TYPE_PTRMEMFUNC_P (restype
)
11321 && ! CLASSTYPE_GOT_SEMICOLON (restype
))
11323 cp_error ("semicolon missing after declaration of `%#T'", restype
);
11324 shadow_tag (build_expr_list (NULL_TREE
, restype
));
11325 CLASSTYPE_GOT_SEMICOLON (restype
) = 1;
11326 if (TREE_CODE (fntype
) == FUNCTION_TYPE
)
11327 fntype
= build_function_type (integer_type_node
,
11328 TYPE_ARG_TYPES (fntype
));
11330 fntype
= build_cplus_method_type (build_type_variant (TYPE_METHOD_BASETYPE (fntype
), TREE_READONLY (decl1
), TREE_SIDE_EFFECTS (decl1
)),
11332 TYPE_ARG_TYPES (fntype
));
11333 TREE_TYPE (decl1
) = fntype
;
11336 if (TREE_CODE (fntype
) == METHOD_TYPE
)
11337 ctype
= TYPE_METHOD_BASETYPE (fntype
);
11338 else if (IDENTIFIER_LENGTH (DECL_NAME (decl1
)) == 4
11339 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (decl1
)), "main")
11340 && DECL_CONTEXT (decl1
) == NULL_TREE
)
11342 /* If this doesn't return integer_type, complain. */
11343 if (TREE_TYPE (TREE_TYPE (decl1
)) != integer_type_node
)
11345 if (pedantic
|| warn_return_type
)
11346 pedwarn ("return type for `main' changed to `int'");
11347 TREE_TYPE (decl1
) = fntype
= default_function_type
;
11349 warn_about_return_type
= 0;
11353 /* Warn if function was previously implicitly declared
11354 (but not if we warned then). */
11355 if (! warn_implicit
11356 && IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)) != NULL_TREE
)
11357 cp_warning_at ("`%D' implicitly declared before its definition", IDENTIFIER_IMPLICIT_DECL (DECL_NAME (decl1
)));
11359 current_function_decl
= decl1
;
11360 /* Save the parm names or decls from this function's declarator
11361 where store_parm_decls will find them. */
11362 current_function_parms
= last_function_parms
;
11363 current_function_parm_tags
= last_function_parm_tags
;
11365 announce_function (decl1
);
11367 if (! processing_template_decl
)
11369 if (TYPE_SIZE (complete_type (TREE_TYPE (fntype
))) == NULL_TREE
)
11371 cp_error ("return-type `%#T' is an incomplete type",
11372 TREE_TYPE (fntype
));
11374 /* Make it return void instead, but don't change the
11375 type of the DECL_RESULT, in case we have a named return value. */
11378 = build_cplus_method_type (build_type_variant (ctype
,
11379 TREE_READONLY (decl1
),
11380 TREE_SIDE_EFFECTS (decl1
)),
11382 FUNCTION_ARG_CHAIN (decl1
));
11385 = build_function_type (void_type_node
,
11386 TYPE_ARG_TYPES (TREE_TYPE (decl1
)));
11387 DECL_RESULT (decl1
)
11388 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)));
11389 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (TREE_TYPE (fntype
));
11390 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (TREE_TYPE (fntype
));
11393 if (TYPE_LANG_SPECIFIC (TREE_TYPE (fntype
))
11394 && CLASSTYPE_ABSTRACT_VIRTUALS (TREE_TYPE (fntype
)))
11395 abstract_virtuals_error (decl1
, TREE_TYPE (fntype
));
11398 if (warn_about_return_type
)
11399 pedwarn ("return-type defaults to `int'");
11401 /* Effective C++ rule 15. See also c_expand_return. */
11403 && DECL_NAME (decl1
) == ansi_opname
[(int) MODIFY_EXPR
]
11404 && TREE_TYPE (fntype
) == void_type_node
)
11405 cp_warning ("`operator=' should return a reference to `*this'");
11407 /* Make the init_value nonzero so pushdecl knows this is not tentative.
11408 error_mark_node is replaced below (in poplevel) with the BLOCK. */
11409 DECL_INITIAL (decl1
) = error_mark_node
;
11411 /* This function exists in static storage.
11412 (This does not mean `static' in the C sense!) */
11413 TREE_STATIC (decl1
) = 1;
11415 /* Record the decl so that the function name is defined.
11416 If we already have a decl for this name, and it is a FUNCTION_DECL,
11417 use the old decl. */
11419 if (processing_template_decl
)
11420 push_template_decl (decl1
);
11421 else if (pre_parsed_p
== 0)
11423 decl1
= pushdecl (decl1
);
11424 DECL_MAIN_VARIANT (decl1
) = decl1
;
11425 fntype
= TREE_TYPE (decl1
);
11428 current_function_decl
= decl1
;
11430 if (DECL_INTERFACE_KNOWN (decl1
))
11432 if (DECL_NOT_REALLY_EXTERN (decl1
))
11433 DECL_EXTERNAL (decl1
) = 0;
11435 /* If this function belongs to an interface, it is public.
11436 If it belongs to someone else's interface, it is also external.
11437 It doesn't matter whether it's inline or not. */
11438 else if (interface_unknown
== 0
11439 && (! DECL_TEMPLATE_INSTANTIATION (decl1
)
11440 || flag_alt_external_templates
))
11442 if (DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
)
11443 || processing_template_decl
)
11444 DECL_EXTERNAL (decl1
)
11446 || (DECL_THIS_INLINE (decl1
) && ! flag_implement_inlines
));
11448 DECL_EXTERNAL (decl1
) = 0;
11449 DECL_NOT_REALLY_EXTERN (decl1
) = 0;
11450 DECL_INTERFACE_KNOWN (decl1
) = 1;
11454 /* This is a definition, not a reference.
11455 So clear DECL_EXTERNAL. */
11456 DECL_EXTERNAL (decl1
) = 0;
11458 if ((DECL_THIS_INLINE (decl1
) || DECL_TEMPLATE_INSTANTIATION (decl1
))
11459 && ! DECL_INTERFACE_KNOWN (decl1
)
11460 /* Don't try to defer nested functions for now. */
11461 && ! hack_decl_function_context (decl1
))
11462 DECL_DEFER_OUTPUT (decl1
) = 1;
11464 DECL_INTERFACE_KNOWN (decl1
) = 1;
11467 if (ctype
!= NULL_TREE
&& DECL_STATIC_FUNCTION_P (decl1
))
11469 if (TREE_CODE (fntype
) == METHOD_TYPE
)
11470 TREE_TYPE (decl1
) = fntype
11471 = build_function_type (TREE_TYPE (fntype
),
11472 TREE_CHAIN (TYPE_ARG_TYPES (fntype
)));
11473 current_function_parms
= TREE_CHAIN (current_function_parms
);
11474 DECL_ARGUMENTS (decl1
) = current_function_parms
;
11477 restype
= TREE_TYPE (fntype
);
11481 push_nested_class (ctype
, 1);
11483 /* If we're compiling a friend function, neither of the variables
11484 current_class_ptr nor current_class_type will have values. */
11485 if (! doing_friend
)
11487 /* We know that this was set up by `grokclassfn'.
11488 We do not wait until `store_parm_decls', since evil
11489 parse errors may never get us to that point. Here
11490 we keep the consistency between `current_class_type'
11491 and `current_class_ptr'. */
11492 tree t
= current_function_parms
;
11494 my_friendly_assert (t
!= NULL_TREE
11495 && TREE_CODE (t
) == PARM_DECL
, 162);
11497 if (TREE_CODE (TREE_TYPE (t
)) == POINTER_TYPE
)
11499 int i
= suspend_momentary ();
11501 /* Fool build_indirect_ref. */
11502 current_class_ptr
= NULL_TREE
;
11503 current_class_ref
= build_indirect_ref (t
, NULL_PTR
);
11504 current_class_ptr
= t
;
11505 resume_momentary (i
);
11508 /* We're having a signature pointer here. */
11509 current_class_ref
= current_class_ptr
= t
;
11515 if (DECL_STATIC_FUNCTION_P (decl1
))
11516 push_nested_class (DECL_CONTEXT (decl1
), 2);
11518 push_memoized_context (0, 1);
11519 current_class_ptr
= current_class_ref
= NULL_TREE
;
11523 current_binding_level
->parm_flag
= 1;
11525 GNU_xref_function (decl1
, current_function_parms
);
11528 cplus_decl_attributes (decl1
, NULL_TREE
, attrs
);
11529 make_function_rtl (decl1
);
11531 /* Promote the value to int before returning it. */
11532 if (C_PROMOTING_INTEGER_TYPE_P (restype
))
11533 restype
= type_promotes_to (restype
);
11535 /* If this fcn was already referenced via a block-scope `extern' decl
11536 (or an implicit decl), propagate certain information about the usage. */
11537 if (TREE_ADDRESSABLE (DECL_ASSEMBLER_NAME (decl1
)))
11538 TREE_ADDRESSABLE (decl1
) = 1;
11540 if (DECL_RESULT (decl1
) == NULL_TREE
)
11542 DECL_RESULT (decl1
)
11543 = build_decl (RESULT_DECL
, 0, TYPE_MAIN_VARIANT (restype
));
11544 TREE_READONLY (DECL_RESULT (decl1
)) = TYPE_READONLY (restype
);
11545 TREE_THIS_VOLATILE (DECL_RESULT (decl1
)) = TYPE_VOLATILE (restype
);
11548 /* Allocate further tree nodes temporarily during compilation
11549 of this function only. Tiemann moved up here from bottom of fn. */
11550 temporary_allocation ();
11552 if (processing_template_decl
)
11554 extern tree last_tree
;
11555 ++minimal_parse_mode
;
11556 last_tree
= DECL_SAVED_TREE (decl1
)
11557 = build_nt (EXPR_STMT
, void_zero_node
);
11562 if (DESTRUCTOR_NAME_P (DECL_ASSEMBLER_NAME (decl1
))
11563 && DECL_LANGUAGE (decl1
) == lang_cplusplus
)
11565 dtor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
11566 ctor_label
= NULL_TREE
;
11570 dtor_label
= NULL_TREE
;
11571 if (DECL_CONSTRUCTOR_P (decl1
))
11572 ctor_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
11579 store_after_parms (insns
)
11584 for (x
= get_insns (); x
; x
= next_insn (x
))
11586 if (GET_CODE (x
) == NOTE
&& NOTE_LINE_NUMBER (x
) == NOTE_INSN_FUNCTION_BEG
)
11588 emit_insns_after (insns
, x
);
11593 /* This doesn't work, because the inline output routine doesn't reset
11594 last_parm_insn correctly for get_first_nonparm_insn () to work. */
11596 last_parm_insn
= get_first_nonparm_insn ();
11597 if (last_parm_insn
== NULL_RTX
)
11598 emit_insns (insns
);
11600 emit_insns_before (insns
, last_parm_insn
);
11605 expand_start_early_try_stmts ()
11609 expand_start_try_stmts ();
11610 insns
= get_insns ();
11613 emit_insns_after (insns
, get_insns ());
11615 store_after_parms (insns
);
11619 /* Store the parameter declarations into the current function declaration.
11620 This is called after parsing the parameter declarations, before
11621 digesting the body of the function.
11623 Also install to binding contour return value identifier, if any. */
11626 store_parm_decls ()
11628 register tree fndecl
= current_function_decl
;
11629 register tree parm
;
11630 int parms_have_cleanups
= 0;
11631 tree cleanups
= NULL_TREE
;
11633 /* This is either a chain of PARM_DECLs (when a prototype is used). */
11634 tree specparms
= current_function_parms
;
11636 /* This is a list of types declared among parms in a prototype. */
11637 tree parmtags
= current_function_parm_tags
;
11639 /* This is a chain of any other decls that came in among the parm
11640 declarations. If a parm is declared with enum {foo, bar} x;
11641 then CONST_DECLs for foo and bar are put here. */
11642 tree nonparms
= NULL_TREE
;
11644 if (toplevel_bindings_p ())
11645 fatal ("parse errors have confused me too much");
11647 /* Initialize RTL machinery. */
11648 init_function_start (fndecl
, input_filename
, lineno
);
11650 /* Declare __FUNCTION__ and __PRETTY_FUNCTION__ for this function. */
11651 declare_function_name ();
11653 /* Create a binding level for the parms. */
11654 expand_start_bindings (0);
11656 if (specparms
!= NULL_TREE
)
11658 /* This case is when the function was defined with an ANSI prototype.
11659 The parms already have decls, so we need not do anything here
11660 except record them as in effect
11661 and complain if any redundant old-style parm decls were written. */
11663 register tree next
;
11665 /* Must clear this because it might contain TYPE_DECLs declared
11667 storedecls (NULL_TREE
);
11669 for (parm
= nreverse (specparms
); parm
; parm
= next
)
11671 next
= TREE_CHAIN (parm
);
11672 if (TREE_CODE (parm
) == PARM_DECL
)
11675 if (DECL_NAME (parm
) == NULL_TREE
)
11679 else if (TYPE_MAIN_VARIANT (TREE_TYPE (parm
)) == void_type_node
)
11680 cp_error ("parameter `%D' declared void", parm
);
11683 /* Now fill in DECL_REFERENCE_SLOT for any of the parm decls.
11684 A parameter is assumed not to have any side effects.
11685 If this should change for any reason, then this
11686 will have to wrap the bashed reference type in a save_expr.
11688 Also, if the parameter type is declared to be an X
11689 and there is an X(X&) constructor, we cannot lay it
11690 into the stack (any more), so we make this parameter
11691 look like it is really of reference type. Functions
11692 which pass parameters to this function will know to
11693 create a temporary in their frame, and pass a reference
11696 if (TREE_CODE (TREE_TYPE (parm
)) == REFERENCE_TYPE
11697 && TYPE_SIZE (TREE_TYPE (TREE_TYPE (parm
))))
11698 SET_DECL_REFERENCE_SLOT (parm
, convert_from_reference (parm
));
11702 if (! processing_template_decl
11703 && (cleanup
= maybe_build_cleanup (parm
), cleanup
))
11705 expand_decl (parm
);
11706 parms_have_cleanups
= 1;
11708 /* Keep track of the cleanups. */
11709 cleanups
= tree_cons (parm
, cleanup
, cleanups
);
11714 /* If we find an enum constant or a type tag,
11715 put it aside for the moment. */
11716 TREE_CHAIN (parm
) = NULL_TREE
;
11717 nonparms
= chainon (nonparms
, parm
);
11721 /* Get the decls in their original chain order
11722 and record in the function. This is all and only the
11723 PARM_DECLs that were pushed into scope by the loop above. */
11724 DECL_ARGUMENTS (fndecl
) = getdecls ();
11726 storetags (chainon (parmtags
, gettags ()));
11729 DECL_ARGUMENTS (fndecl
) = NULL_TREE
;
11731 /* Now store the final chain of decls for the arguments
11732 as the decl-chain of the current lexical scope.
11733 Put the enumerators in as well, at the front so that
11734 DECL_ARGUMENTS is not modified. */
11736 storedecls (chainon (nonparms
, DECL_ARGUMENTS (fndecl
)));
11738 /* Initialize the RTL code for the function. */
11739 DECL_SAVED_INSNS (fndecl
) = NULL_RTX
;
11740 if (! processing_template_decl
)
11741 expand_function_start (fndecl
, parms_have_cleanups
);
11743 current_function_parms_stored
= 1;
11745 /* If this function is `main', emit a call to `__main'
11746 to run global initializers, etc. */
11747 if (DECL_NAME (fndecl
)
11748 && IDENTIFIER_LENGTH (DECL_NAME (fndecl
)) == 4
11749 && strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl
)), "main") == 0
11750 && DECL_CONTEXT (fndecl
) == NULL_TREE
)
11752 expand_main_function ();
11755 /* Now that we have initialized the parms, we can start their
11756 cleanups. We cannot do this before, since expand_decl_cleanup
11757 should not be called before the parm can be used. */
11759 && ! processing_template_decl
)
11761 for (cleanups
= nreverse (cleanups
); cleanups
; cleanups
= TREE_CHAIN (cleanups
))
11763 if (! expand_decl_cleanup (TREE_PURPOSE (cleanups
), TREE_VALUE (cleanups
)))
11764 cp_error ("parser lost in parsing declaration of `%D'",
11765 TREE_PURPOSE (cleanups
));
11769 /* Create a binding contour which can be used to catch
11770 cleanup-generated temporaries. Also, if the return value needs or
11771 has initialization, deal with that now. */
11772 if (parms_have_cleanups
)
11775 expand_start_bindings (0);
11778 if (! processing_template_decl
&& flag_exceptions
)
11780 /* Do the starting of the exception specifications, if we have any. */
11781 if (TYPE_RAISES_EXCEPTIONS (TREE_TYPE (current_function_decl
)))
11782 expand_start_eh_spec ();
11785 last_parm_cleanup_insn
= get_last_insn ();
11786 last_dtor_insn
= get_last_insn ();
11789 /* Bind a name and initialization to the return value of
11790 the current function. */
11793 store_return_init (return_id
, init
)
11794 tree return_id
, init
;
11796 tree decl
= DECL_RESULT (current_function_decl
);
11799 /* Give this error as many times as there are occurrences,
11800 so that users can use Emacs compilation buffers to find
11801 and fix all such places. */
11802 pedwarn ("ANSI C++ does not permit named return values");
11804 if (return_id
!= NULL_TREE
)
11806 if (DECL_NAME (decl
) == NULL_TREE
)
11808 DECL_NAME (decl
) = return_id
;
11809 DECL_ASSEMBLER_NAME (decl
) = return_id
;
11812 cp_error ("return identifier `%D' already in place", decl
);
11815 /* Can't let this happen for constructors. */
11816 if (DECL_CONSTRUCTOR_P (current_function_decl
))
11818 error ("can't redefine default return value for constructors");
11822 /* If we have a named return value, put that in our scope as well. */
11823 if (DECL_NAME (decl
) != NULL_TREE
)
11825 /* If this named return value comes in a register,
11826 put it in a pseudo-register. */
11827 if (DECL_REGISTER (decl
))
11829 original_result_rtx
= DECL_RTL (decl
);
11830 DECL_RTL (decl
) = gen_reg_rtx (DECL_MODE (decl
));
11833 /* Let `cp_finish_decl' know that this initializer is ok. */
11834 DECL_INITIAL (decl
) = init
;
11837 if (minimal_parse_mode
)
11838 add_tree (build_min_nt (RETURN_INIT
, return_id
,
11839 copy_to_permanent (init
)));
11841 cp_finish_decl (decl
, init
, NULL_TREE
, 0, 0);
11846 /* Finish up a function declaration and compile that function
11847 all the way to assembler language output. The free the storage
11848 for the function definition.
11850 This is called after parsing the body of the function definition.
11851 LINENO is the current line number.
11853 C++: CALL_POPLEVEL is non-zero if an extra call to poplevel
11854 (and expand_end_bindings) must be made to take care of the binding
11855 contour for the base initializers. This is only relevant for
11858 NESTED is nonzero if we were in the middle of compiling another function
11859 when we started on this one. */
11862 finish_function (lineno
, call_poplevel
, nested
)
11867 register tree fndecl
= current_function_decl
;
11868 tree fntype
, ctype
= NULL_TREE
;
11869 rtx last_parm_insn
, insns
;
11870 /* Label to use if this function is supposed to return a value. */
11871 tree no_return_label
= NULL_TREE
;
11872 tree decls
= NULL_TREE
;
11874 /* When we get some parse errors, we can end up without a
11875 current_function_decl, so cope. */
11876 if (fndecl
== NULL_TREE
)
11879 if (! nested
&& function_depth
> 1)
11882 fntype
= TREE_TYPE (fndecl
);
11884 /* TREE_READONLY (fndecl) = 1;
11885 This caused &foo to be of type ptr-to-const-function
11886 which then got a warning when stored in a ptr-to-function variable. */
11888 /* This happens on strange parse errors. */
11889 if (! current_function_parms_stored
)
11892 store_parm_decls ();
11895 if (processing_template_decl
)
11897 if (DECL_CONSTRUCTOR_P (fndecl
) && call_poplevel
)
11899 decls
= getdecls ();
11900 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
11901 poplevel (decls
!= NULL_TREE
, 0, 0);
11906 if (write_symbols
!= NO_DEBUG
/*&& TREE_CODE (fntype) != METHOD_TYPE*/)
11908 tree ttype
= target_type (fntype
);
11911 if (IS_AGGR_TYPE (ttype
))
11912 /* Let debugger know it should output info for this type. */
11913 note_debug_info_needed (ttype
);
11915 for (parmdecl
= DECL_ARGUMENTS (fndecl
); parmdecl
; parmdecl
= TREE_CHAIN (parmdecl
))
11917 ttype
= target_type (TREE_TYPE (parmdecl
));
11918 if (IS_AGGR_TYPE (ttype
))
11919 /* Let debugger know it should output info for this type. */
11920 note_debug_info_needed (ttype
);
11924 /* Clean house because we will need to reorder insns here. */
11925 do_pending_stack_adjust ();
11929 tree binfo
= TYPE_BINFO (current_class_type
);
11930 tree cond
= integer_one_node
;
11932 tree in_charge_node
= lookup_name (in_charge_identifier
, 0);
11934 int ok_to_optimize_dtor
= 0;
11935 int empty_dtor
= get_last_insn () == last_dtor_insn
;
11937 if (current_function_assigns_this
)
11938 cond
= build (NE_EXPR
, boolean_type_node
,
11939 current_class_ptr
, integer_zero_node
);
11942 int n_baseclasses
= CLASSTYPE_N_BASECLASSES (current_class_type
);
11944 /* If this destructor is empty, then we don't need to check
11945 whether `this' is NULL in some cases. */
11946 if ((flag_this_is_variable
& 1) == 0)
11947 ok_to_optimize_dtor
= 1;
11948 else if (empty_dtor
)
11949 ok_to_optimize_dtor
11950 = (n_baseclasses
== 0
11951 || (n_baseclasses
== 1
11952 && TYPE_HAS_DESTRUCTOR (TYPE_BINFO_BASETYPE (current_class_type
, 0))));
11955 /* These initializations might go inline. Protect
11956 the binding level of the parms. */
11958 expand_start_bindings (0);
11960 if (current_function_assigns_this
)
11962 current_function_assigns_this
= 0;
11963 current_function_just_assigned_this
= 0;
11966 /* Generate the code to call destructor on base class.
11967 If this destructor belongs to a class with virtual
11968 functions, then set the virtual function table
11969 pointer to represent the type of our base class. */
11971 /* This side-effect makes call to `build_delete' generate the
11972 code we have to have at the end of this destructor. */
11973 TYPE_HAS_DESTRUCTOR (current_class_type
) = 0;
11975 /* These are two cases where we cannot delegate deletion. */
11976 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)
11977 || TYPE_GETS_REG_DELETE (current_class_type
))
11978 exprstmt
= build_delete (current_class_type
, current_class_ref
, integer_zero_node
,
11979 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
11981 exprstmt
= build_delete (current_class_type
, current_class_ref
, in_charge_node
,
11982 LOOKUP_NONVIRTUAL
|LOOKUP_DESTRUCTOR
|LOOKUP_NORMAL
, 0);
11984 /* If we did not assign to this, then `this' is non-zero at
11985 the end of a destructor. As a special optimization, don't
11986 emit test if this is an empty destructor. If it does nothing,
11987 it does nothing. If it calls a base destructor, the base
11988 destructor will perform the test. */
11990 if (exprstmt
!= error_mark_node
11991 && (TREE_CODE (exprstmt
) != NOP_EXPR
11992 || TREE_OPERAND (exprstmt
, 0) != integer_zero_node
11993 || TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
)))
11995 expand_label (dtor_label
);
11996 if (cond
!= integer_one_node
)
11997 expand_start_cond (cond
, 0);
11998 if (exprstmt
!= void_zero_node
)
11999 /* Don't call `expand_expr_stmt' if we're not going to do
12000 anything, since -Wall will give a diagnostic. */
12001 expand_expr_stmt (exprstmt
);
12003 /* Run destructor on all virtual baseclasses. */
12004 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12006 tree vbases
= nreverse (copy_list (CLASSTYPE_VBASECLASSES (current_class_type
)));
12007 expand_start_cond (build (BIT_AND_EXPR
, integer_type_node
,
12008 in_charge_node
, integer_two_node
), 0);
12011 if (TYPE_NEEDS_DESTRUCTOR (BINFO_TYPE (vbases
)))
12013 tree vb
= get_vbase
12014 (BINFO_TYPE (vbases
),
12015 TYPE_BINFO (current_class_type
));
12017 (build_scoped_method_call
12018 (current_class_ref
, vb
, dtor_identifier
,
12019 build_expr_list (NULL_TREE
, integer_zero_node
)));
12021 vbases
= TREE_CHAIN (vbases
);
12023 expand_end_cond ();
12026 do_pending_stack_adjust ();
12027 if (cond
!= integer_one_node
)
12028 expand_end_cond ();
12031 TYPE_HAS_DESTRUCTOR (current_class_type
) = 1;
12033 virtual_size
= c_sizeof (current_class_type
);
12035 /* At the end, call delete if that's what's requested. */
12036 if (TYPE_GETS_REG_DELETE (current_class_type
))
12037 /* This NOP_EXPR means we are in a static call context. */
12039 = build_method_call (build_indirect_ref (build1 (NOP_EXPR
,
12040 build_pointer_type (current_class_type
),
12043 ansi_opname
[(int) DELETE_EXPR
],
12044 expr_tree_cons (NULL_TREE
, current_class_ptr
,
12045 build_expr_list (NULL_TREE
, virtual_size
)),
12046 NULL_TREE
, LOOKUP_NORMAL
);
12047 else if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12048 exprstmt
= build_x_delete (ptr_type_node
, current_class_ptr
, 0,
12051 exprstmt
= NULL_TREE
;
12055 cond
= build (BIT_AND_EXPR
, integer_type_node
,
12056 in_charge_node
, integer_one_node
);
12057 expand_start_cond (cond
, 0);
12058 expand_expr_stmt (exprstmt
);
12059 expand_end_cond ();
12062 /* End of destructor. */
12063 expand_end_bindings (NULL_TREE
, getdecls () != NULL_TREE
, 0);
12064 poplevel (2, 0, 0); /* XXX change to 1 */
12066 /* Back to the top of destructor. */
12067 /* Dont execute destructor code if `this' is NULL. */
12071 /* If the dtor is empty, and we know there is not possible way we
12072 could use any vtable entries, before they are possibly set by
12073 a base class dtor, we don't have to setup the vtables, as we
12074 know that any base class dtoring will set up any vtables it
12075 needs. We avoid MI, because one base class dtor can do a
12076 virtual dispatch to an overridden function that would need to
12077 have a non-related vtable set up, we cannot avoid setting up
12078 vtables in that case. We could change this to see if there is
12079 just one vtable. */
12080 if (! empty_dtor
|| TYPE_USES_COMPLEX_INHERITANCE (current_class_type
))
12082 /* Make all virtual function table pointers in non-virtual base
12083 classes point to CURRENT_CLASS_TYPE's virtual function
12085 expand_direct_vtbls_init (binfo
, binfo
, 1, 0, current_class_ptr
);
12087 if (TYPE_USES_VIRTUAL_BASECLASSES (current_class_type
))
12088 expand_indirect_vtbls_init (binfo
, current_class_ref
, current_class_ptr
);
12091 if (! ok_to_optimize_dtor
)
12093 cond
= build_binary_op (NE_EXPR
,
12094 current_class_ptr
, integer_zero_node
, 1);
12095 expand_start_cond (cond
, 0);
12098 insns
= get_insns ();
12101 last_parm_insn
= get_first_nonparm_insn ();
12102 if (last_parm_insn
== NULL_RTX
)
12103 last_parm_insn
= get_last_insn ();
12105 last_parm_insn
= previous_insn (last_parm_insn
);
12107 emit_insns_after (insns
, last_parm_insn
);
12109 if (! ok_to_optimize_dtor
)
12110 expand_end_cond ();
12112 else if (current_function_assigns_this
)
12114 /* Does not need to call emit_base_init, because
12115 that is done (if needed) just after assignment to this
12118 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12120 end_protect_partials ();
12121 expand_label (ctor_label
);
12122 ctor_label
= NULL_TREE
;
12126 decls
= getdecls ();
12127 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12128 poplevel (decls
!= NULL_TREE
, 0, 0);
12130 c_expand_return (current_class_ptr
);
12132 else if (TYPE_MAIN_VARIANT (TREE_TYPE (
12133 DECL_RESULT (current_function_decl
))) != void_type_node
12134 && return_label
!= NULL_RTX
)
12135 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12137 current_function_assigns_this
= 0;
12138 current_function_just_assigned_this
= 0;
12139 base_init_expr
= NULL_TREE
;
12141 else if (DECL_CONSTRUCTOR_P (fndecl
))
12143 tree cond
, thenclause
;
12144 /* Allow constructor for a type to get a new instance of the object
12145 using `build_new'. */
12146 tree abstract_virtuals
= CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
);
12147 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = NULL_TREE
;
12149 DECL_RETURNS_FIRST_ARG (fndecl
) = 1;
12151 if (flag_this_is_variable
> 0)
12153 cond
= build_binary_op (EQ_EXPR
,
12154 current_class_ptr
, integer_zero_node
, 1);
12155 thenclause
= build_modify_expr (current_class_ptr
, NOP_EXPR
,
12156 build_new (NULL_TREE
, current_class_type
, void_type_node
, 0));
12159 CLASSTYPE_ABSTRACT_VIRTUALS (current_class_type
) = abstract_virtuals
;
12163 if (flag_this_is_variable
> 0)
12165 expand_start_cond (cond
, 0);
12166 expand_expr_stmt (thenclause
);
12167 expand_end_cond ();
12170 /* Emit insns from `emit_base_init' which sets up virtual
12171 function table pointer(s). */
12172 if (base_init_expr
)
12174 expand_expr_stmt (base_init_expr
);
12175 base_init_expr
= NULL_TREE
;
12178 insns
= get_insns ();
12181 /* This is where the body of the constructor begins. */
12183 emit_insns_after (insns
, last_parm_cleanup_insn
);
12185 end_protect_partials ();
12187 /* This is where the body of the constructor ends. */
12188 expand_label (ctor_label
);
12189 ctor_label
= NULL_TREE
;
12193 decls
= getdecls ();
12194 expand_end_bindings (decls
, decls
!= NULL_TREE
, 0);
12195 poplevel (decls
!= NULL_TREE
, 1, 0);
12198 c_expand_return (current_class_ptr
);
12200 current_function_assigns_this
= 0;
12201 current_function_just_assigned_this
= 0;
12203 else if (IDENTIFIER_LENGTH (DECL_NAME (fndecl
)) == 4
12204 && ! strcmp (IDENTIFIER_POINTER (DECL_NAME (fndecl
)), "main")
12205 && DECL_CONTEXT (fndecl
) == NULL_TREE
)
12207 /* Make it so that `main' always returns 0 by default. */
12209 c_expand_return (integer_one_node
);
12211 c_expand_return (integer_zero_node
);
12214 else if (return_label
!= NULL_RTX
12215 && current_function_return_value
== NULL_TREE
12216 && ! DECL_NAME (DECL_RESULT (current_function_decl
)))
12217 no_return_label
= build_decl (LABEL_DECL
, NULL_TREE
, NULL_TREE
);
12219 if (flag_exceptions
)
12220 expand_exception_blocks ();
12222 /* If this function is supposed to return a value, ensure that
12223 we do not fall into the cleanups by mistake. The end of our
12224 function will look like this:
12226 user code (may have return stmt somewhere)
12227 goto no_return_label
12232 NOTE_INSN_FUNCTION_END
12236 If the user omits a return stmt in the USER CODE section, we
12237 will have a control path which reaches NOTE_INSN_FUNCTION_END.
12238 Otherwise, we won't. */
12239 if (no_return_label
)
12241 DECL_CONTEXT (no_return_label
) = fndecl
;
12242 DECL_INITIAL (no_return_label
) = error_mark_node
;
12243 DECL_SOURCE_FILE (no_return_label
) = input_filename
;
12244 DECL_SOURCE_LINE (no_return_label
) = lineno
;
12245 expand_goto (no_return_label
);
12250 /* remove the binding contour which is used
12251 to catch cleanup-generated temporaries. */
12252 expand_end_bindings (0, 0, 0);
12253 poplevel (0, 0, 0);
12255 /* Emit label at beginning of cleanup code for parameters. */
12256 emit_label (cleanup_label
);
12259 /* Get return value into register if that's where it's supposed to be. */
12260 if (original_result_rtx
)
12261 fixup_result_decl (DECL_RESULT (fndecl
), original_result_rtx
);
12263 /* Finish building code that will trigger warnings if users forget
12264 to make their functions return values. */
12265 if (no_return_label
|| cleanup_label
)
12266 emit_jump (return_label
);
12267 if (no_return_label
)
12269 /* We don't need to call `expand_*_return' here because we
12270 don't need any cleanups here--this path of code is only
12271 for error checking purposes. */
12272 expand_label (no_return_label
);
12275 /* Generate rtl for function exit. */
12276 expand_function_end (input_filename
, lineno
, 1);
12279 /* This must come after expand_function_end because cleanups might
12280 have declarations (from inline functions) that need to go into
12281 this function's blocks. */
12282 if (current_binding_level
->parm_flag
!= 1)
12283 my_friendly_abort (122);
12284 poplevel (1, 0, 1);
12286 /* reset scope for C++: if we were in the scope of a class,
12287 then when we finish this function, we are not longer so.
12288 This cannot be done until we know for sure that no more
12289 class members will ever be referenced in this function
12290 (i.e., calls to destructors). */
12291 if (current_class_name
)
12293 ctype
= current_class_type
;
12294 pop_nested_class (1);
12297 pop_memoized_context (1);
12299 /* Must mark the RESULT_DECL as being in this function. */
12300 DECL_CONTEXT (DECL_RESULT (fndecl
)) = fndecl
;
12302 /* Set the BLOCK_SUPERCONTEXT of the outermost function scope to point
12303 to the FUNCTION_DECL node itself. */
12304 BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl
)) = fndecl
;
12306 if (! processing_template_decl
)
12308 /* So we can tell if jump_optimize sets it to 1. */
12311 /* Run the optimizers and output the assembler code for this
12314 if (DECL_ARTIFICIAL (fndecl
))
12316 /* Do we really *want* to inline this synthesized method? */
12318 int save_fif
= flag_inline_functions
;
12319 flag_inline_functions
= 1;
12321 /* Turn off DECL_INLINE for the moment so function_cannot_inline_p
12322 will check our size. */
12323 DECL_INLINE (fndecl
) = 0;
12325 rest_of_compilation (fndecl
);
12326 flag_inline_functions
= save_fif
;
12329 rest_of_compilation (fndecl
);
12331 if (DECL_SAVED_INSNS (fndecl
) && ! TREE_ASM_WRITTEN (fndecl
))
12333 /* Set DECL_EXTERNAL so that assemble_external will be called as
12334 necessary. We'll clear it again in finish_file. */
12335 if (! DECL_EXTERNAL (fndecl
))
12336 DECL_NOT_REALLY_EXTERN (fndecl
) = 1;
12337 DECL_EXTERNAL (fndecl
) = 1;
12338 mark_inline_for_output (fndecl
);
12341 if (ctype
&& TREE_ASM_WRITTEN (fndecl
))
12342 note_debug_info_needed (ctype
);
12344 current_function_returns_null
|= can_reach_end
;
12346 /* Since we don't normally go through c_expand_return for constructors,
12347 this normally gets the wrong value.
12348 Also, named return values have their return codes emitted after
12349 NOTE_INSN_FUNCTION_END, confusing jump.c. */
12350 if (DECL_CONSTRUCTOR_P (fndecl
)
12351 || DECL_NAME (DECL_RESULT (fndecl
)) != NULL_TREE
)
12352 current_function_returns_null
= 0;
12354 if (TREE_THIS_VOLATILE (fndecl
) && current_function_returns_null
)
12355 cp_warning ("`noreturn' function `%D' does return", fndecl
);
12356 else if ((warn_return_type
|| pedantic
)
12357 && current_function_returns_null
12358 && TYPE_MAIN_VARIANT (TREE_TYPE (fntype
)) != void_type_node
)
12360 /* If this function returns non-void and control can drop through,
12362 cp_warning ("control reaches end of non-void function `%D'", fndecl
);
12364 /* With just -W, complain only if function returns both with
12365 and without a value. */
12366 else if (extra_warnings
12367 && current_function_returns_value
&& current_function_returns_null
)
12368 warning ("this function may return with or without a value");
12373 /* Free all the tree nodes making up this function. */
12374 /* Switch back to allocating nodes permanently
12375 until we start another function. */
12376 if (processing_template_decl
)
12378 --minimal_parse_mode
;
12379 DECL_SAVED_TREE (fndecl
) = TREE_CHAIN (DECL_SAVED_TREE (fndecl
));
12383 permanent_allocation (1);
12385 if (DECL_SAVED_INSNS (fndecl
) == NULL_RTX
)
12389 /* Stop pointing to the local nodes about to be freed. */
12390 /* But DECL_INITIAL must remain nonzero so we know this
12391 was an actual function definition. */
12392 DECL_INITIAL (fndecl
) = error_mark_node
;
12393 for (t
= DECL_ARGUMENTS (fndecl
); t
; t
= TREE_CHAIN (t
))
12394 DECL_RTL (t
) = DECL_INCOMING_RTL (t
) = NULL_RTX
;
12397 if (DECL_STATIC_CONSTRUCTOR (fndecl
))
12398 static_ctors
= perm_tree_cons (NULL_TREE
, fndecl
, static_ctors
);
12399 if (DECL_STATIC_DESTRUCTOR (fndecl
))
12400 static_dtors
= perm_tree_cons (NULL_TREE
, fndecl
, static_dtors
);
12404 /* Let the error reporting routines know that we're outside a
12405 function. For a nested function, this value is used in
12406 pop_cp_function_context and then reset via pop_function_context. */
12407 current_function_decl
= NULL_TREE
;
12410 named_label_uses
= NULL
;
12411 current_class_ptr
= NULL_TREE
;
12412 current_class_ref
= NULL_TREE
;
12415 /* Create the FUNCTION_DECL for a function definition.
12416 LINE1 is the line number that the definition absolutely begins on.
12417 LINE2 is the line number that the name of the function appears on.
12418 DECLSPECS and DECLARATOR are the parts of the declaration;
12419 they describe the return type and the name of the function,
12420 but twisted together in a fashion that parallels the syntax of C.
12422 This function creates a binding context for the function body
12423 as well as setting up the FUNCTION_DECL in current_function_decl.
12425 Returns a FUNCTION_DECL on success.
12427 If the DECLARATOR is not suitable for a function (it defines a datum
12428 instead), we return 0, which tells yyparse to report a parse error.
12430 May return void_type_node indicating that this method is actually
12431 a friend. See grokfield for more details.
12433 Came here with a `.pushlevel' .
12435 DO NOT MAKE ANY CHANGES TO THIS CODE WITHOUT MAKING CORRESPONDING
12436 CHANGES TO CODE IN `grokfield'. */
12439 start_method (declspecs
, declarator
)
12440 tree declarator
, declspecs
;
12442 tree fndecl
= grokdeclarator (declarator
, declspecs
, MEMFUNCDEF
, 0,
12445 /* Something too ugly to handle. */
12446 if (fndecl
== NULL_TREE
)
12449 /* Pass friends other than inline friend functions back. */
12450 if (TYPE_MAIN_VARIANT (fndecl
) == void_type_node
)
12453 if (TREE_CODE (fndecl
) != FUNCTION_DECL
)
12454 /* Not a function, tell parser to report parse error. */
12457 if (IS_SIGNATURE (current_class_type
))
12458 IS_DEFAULT_IMPLEMENTATION (fndecl
) = 1;
12460 if (DECL_IN_AGGR_P (fndecl
))
12462 if (IDENTIFIER_ERROR_LOCUS (DECL_ASSEMBLER_NAME (fndecl
)) != current_class_type
)
12464 if (DECL_CONTEXT (fndecl
))
12465 cp_error ("`%D' is already defined in class %s", fndecl
,
12466 TYPE_NAME_STRING (DECL_CONTEXT (fndecl
)));
12468 return void_type_node
;
12471 DECL_THIS_INLINE (fndecl
) = 1;
12473 if (flag_default_inline
)
12474 DECL_INLINE (fndecl
) = 1;
12476 if (processing_template_decl
&& ! current_function_decl
)
12477 push_template_decl (fndecl
);
12479 /* We read in the parameters on the maybepermanent_obstack,
12480 but we won't be getting back to them until after we
12481 may have clobbered them. So the call to preserve_data
12482 will keep them safe. */
12485 if (! DECL_FRIEND_P (fndecl
))
12487 if (DECL_CHAIN (fndecl
) != NULL_TREE
)
12489 /* Need a fresh node here so that we don't get circularity
12490 when we link these together. If FNDECL was a friend, then
12491 `pushdecl' does the right thing, which is nothing wrt its
12492 current value of DECL_CHAIN. */
12493 fndecl
= copy_node (fndecl
);
12495 if (TREE_CHAIN (fndecl
))
12497 fndecl
= copy_node (fndecl
);
12498 TREE_CHAIN (fndecl
) = NULL_TREE
;
12501 if (DECL_CONSTRUCTOR_P (fndecl
))
12503 if (! grok_ctor_properties (current_class_type
, fndecl
))
12504 return void_type_node
;
12506 else if (IDENTIFIER_OPNAME_P (DECL_NAME (fndecl
)))
12507 grok_op_properties (fndecl
, DECL_VIRTUAL_P (fndecl
), 0);
12510 cp_finish_decl (fndecl
, NULL_TREE
, NULL_TREE
, 0, 0);
12512 /* Make a place for the parms */
12514 current_binding_level
->parm_flag
= 1;
12516 DECL_IN_AGGR_P (fndecl
) = 1;
12520 /* Go through the motions of finishing a function definition.
12521 We don't compile this method until after the whole class has
12524 FINISH_METHOD must return something that looks as though it
12525 came from GROKFIELD (since we are defining a method, after all).
12527 This is called after parsing the body of the function definition.
12528 STMTS is the chain of statements that makes up the function body.
12530 DECL is the ..._DECL that `start_method' provided. */
12533 finish_method (decl
)
12536 register tree fndecl
= decl
;
12539 register tree link
;
12541 if (TYPE_MAIN_VARIANT (decl
) == void_type_node
)
12544 old_initial
= DECL_INITIAL (fndecl
);
12546 /* Undo the level for the parms (from start_method).
12547 This is like poplevel, but it causes nothing to be
12548 saved. Saving information here confuses symbol-table
12549 output routines. Besides, this information will
12550 be correctly output when this method is actually
12553 /* Clear out the meanings of the local variables of this level;
12554 also record in each decl which block it belongs to. */
12556 for (link
= current_binding_level
->names
; link
; link
= TREE_CHAIN (link
))
12558 if (DECL_NAME (link
) != NULL_TREE
)
12559 IDENTIFIER_LOCAL_VALUE (DECL_NAME (link
)) = 0;
12560 my_friendly_assert (TREE_CODE (link
) != FUNCTION_DECL
, 163);
12561 DECL_CONTEXT (link
) = NULL_TREE
;
12564 /* Restore all name-meanings of the outer levels
12565 that were shadowed by this level. */
12567 for (link
= current_binding_level
->shadowed
; link
; link
= TREE_CHAIN (link
))
12568 IDENTIFIER_LOCAL_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
12569 for (link
= current_binding_level
->class_shadowed
;
12570 link
; link
= TREE_CHAIN (link
))
12571 IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
12572 for (link
= current_binding_level
->type_shadowed
;
12573 link
; link
= TREE_CHAIN (link
))
12574 IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (link
)) = TREE_VALUE (link
);
12576 GNU_xref_end_scope ((HOST_WIDE_INT
) current_binding_level
,
12577 (HOST_WIDE_INT
) current_binding_level
->level_chain
,
12578 current_binding_level
->parm_flag
,
12579 current_binding_level
->keep
);
12581 poplevel (0, 0, 0);
12583 DECL_INITIAL (fndecl
) = old_initial
;
12585 /* We used to check if the context of FNDECL was different from
12586 current_class_type as another way to get inside here. This didn't work
12587 for String.cc in libg++. */
12588 if (DECL_FRIEND_P (fndecl
))
12590 CLASSTYPE_INLINE_FRIENDS (current_class_type
)
12591 = tree_cons (NULL_TREE
, fndecl
, CLASSTYPE_INLINE_FRIENDS (current_class_type
));
12592 decl
= void_type_node
;
12598 /* Called when a new struct TYPE is defined.
12599 If this structure or union completes the type of any previous
12600 variable declaration, lay it out and output its rtl. */
12603 hack_incomplete_structures (type
)
12608 if (current_binding_level
->incomplete
== NULL_TREE
)
12611 if (!type
) /* Don't do this for class templates. */
12614 for (list
= ¤t_binding_level
->incomplete
; *list
; )
12616 tree decl
= TREE_VALUE (*list
);
12617 if (decl
&& TREE_TYPE (decl
) == type
12618 || (TREE_TYPE (decl
)
12619 && TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
12620 && TREE_TYPE (TREE_TYPE (decl
)) == type
))
12622 int toplevel
= toplevel_bindings_p ();
12623 if (TREE_CODE (TREE_TYPE (decl
)) == ARRAY_TYPE
12624 && TREE_TYPE (TREE_TYPE (decl
)) == type
)
12625 layout_type (TREE_TYPE (decl
));
12626 layout_decl (decl
, 0);
12627 rest_of_decl_compilation (decl
, NULL_PTR
, toplevel
, 0);
12631 expand_decl (decl
);
12632 cleanup
= maybe_build_cleanup (decl
);
12633 expand_decl_init (decl
);
12634 if (! expand_decl_cleanup (decl
, cleanup
))
12635 cp_error ("parser lost in parsing declaration of `%D'",
12638 *list
= TREE_CHAIN (*list
);
12641 list
= &TREE_CHAIN (*list
);
12645 /* If DECL is of a type which needs a cleanup, build that cleanup here.
12646 See build_delete for information about AUTO_DELETE.
12648 Don't build these on the momentary obstack; they must live
12649 the life of the binding contour. */
12652 maybe_build_cleanup_1 (decl
, auto_delete
)
12653 tree decl
, auto_delete
;
12655 tree type
= TREE_TYPE (decl
);
12656 if (TYPE_NEEDS_DESTRUCTOR (type
))
12658 int temp
= 0, flags
= LOOKUP_NORMAL
|LOOKUP_DESTRUCTOR
;
12661 if (TREE_CODE (decl
) != PARM_DECL
)
12662 temp
= suspend_momentary ();
12664 if (TREE_CODE (type
) == ARRAY_TYPE
)
12668 mark_addressable (decl
);
12669 rval
= build_unary_op (ADDR_EXPR
, decl
, 0);
12672 /* Optimize for space over speed here. */
12673 if (! TYPE_USES_VIRTUAL_BASECLASSES (type
)
12674 || flag_expensive_optimizations
)
12675 flags
|= LOOKUP_NONVIRTUAL
;
12677 rval
= build_delete (TREE_TYPE (rval
), rval
, auto_delete
, flags
, 0);
12679 if (TYPE_USES_VIRTUAL_BASECLASSES (type
)
12680 && ! TYPE_HAS_DESTRUCTOR (type
))
12681 rval
= build_compound_expr (expr_tree_cons (NULL_TREE
, rval
,
12682 build_expr_list (NULL_TREE
, build_vbase_delete (type
, decl
))));
12684 if (TREE_CODE (decl
) != PARM_DECL
)
12685 resume_momentary (temp
);
12692 /* If DECL is of a type which needs a cleanup, build that cleanup
12693 here. The cleanup does free the storage with a call to delete. */
12696 maybe_build_cleanup_and_delete (decl
)
12699 return maybe_build_cleanup_1 (decl
, integer_three_node
);
12702 /* If DECL is of a type which needs a cleanup, build that cleanup
12703 here. The cleanup does not free the storage with a call a delete. */
12706 maybe_build_cleanup (decl
)
12709 return maybe_build_cleanup_1 (decl
, integer_two_node
);
12712 /* Expand a C++ expression at the statement level.
12713 This is needed to ferret out nodes which have UNKNOWN_TYPE.
12714 The C++ type checker should get all of these out when
12715 expressions are combined with other, type-providing, expressions,
12716 leaving only orphan expressions, such as:
12718 &class::bar; / / takes its address, but does nothing with it. */
12721 cplus_expand_expr_stmt (exp
)
12724 if (processing_template_decl
)
12726 add_tree (build_min_nt (EXPR_STMT
, exp
));
12730 /* Arrange for all temps to disappear. */
12731 expand_start_target_temps ();
12733 if (TREE_TYPE (exp
) == unknown_type_node
)
12735 if (TREE_CODE (exp
) == ADDR_EXPR
|| TREE_CODE (exp
) == TREE_LIST
)
12736 error ("address of overloaded function with no contextual type information");
12737 else if (TREE_CODE (exp
) == COMPONENT_REF
)
12738 warning ("useless reference to a member function name, did you forget the ()?");
12742 if (TREE_CODE (exp
) == FUNCTION_DECL
)
12744 cp_warning ("reference, not call, to function `%D'", exp
);
12745 warning ("at this point in file");
12749 /* We should do this eventually, but right now this causes regex.o from
12750 libg++ to miscompile, and tString to core dump. */
12751 exp
= build1 (CLEANUP_POINT_EXPR
, TREE_TYPE (exp
), exp
);
12753 /* If we don't do this, we end up down inside expand_expr
12754 trying to do TYPE_MODE on the ERROR_MARK, and really
12755 go outside the bounds of the type. */
12756 if (exp
!= error_mark_node
)
12757 expand_expr_stmt (break_out_cleanups (exp
));
12760 /* Clean up any pending cleanups. This happens when a function call
12761 returns a cleanup-needing value that nobody uses. */
12762 expand_end_target_temps ();
12765 /* When a stmt has been parsed, this function is called.
12767 Currently, this function only does something within a
12768 constructor's scope: if a stmt has just assigned to this,
12769 and we are in a derived class, we call `emit_base_init'. */
12774 extern struct nesting
*cond_stack
, *loop_stack
, *case_stack
;
12777 if (current_function_assigns_this
12778 || ! current_function_just_assigned_this
)
12780 if (DECL_CONSTRUCTOR_P (current_function_decl
))
12782 /* Constructors must wait until we are out of control
12783 zones before calling base constructors. */
12784 if (cond_stack
|| loop_stack
|| case_stack
)
12786 expand_expr_stmt (base_init_expr
);
12787 check_base_init (current_class_type
);
12789 current_function_assigns_this
= 1;
12792 /* Change a static member function definition into a FUNCTION_TYPE, instead
12793 of the METHOD_TYPE that we create when it's originally parsed.
12795 WARNING: DO NOT pass &TREE_TYPE (decl) to FN or &TYPE_ARG_TYPES
12796 (TREE_TYPE (decl)) to ARGTYPES, as doing so will corrupt the types of
12797 other decls. Either pass the addresses of local variables or NULL. */
12800 revert_static_member_fn (decl
, fn
, argtypes
)
12801 tree
*decl
, *fn
, *argtypes
;
12804 tree function
= fn
? *fn
: TREE_TYPE (*decl
);
12805 tree args
= argtypes
? *argtypes
: TYPE_ARG_TYPES (function
);
12807 if (TYPE_READONLY (TREE_TYPE (TREE_VALUE (args
))))
12808 cp_error ("static member function `%#D' declared const", *decl
);
12809 if (TYPE_VOLATILE (TREE_TYPE (TREE_VALUE (args
))))
12810 cp_error ("static member function `%#D' declared volatile", *decl
);
12812 args
= TREE_CHAIN (args
);
12813 tmp
= build_function_type (TREE_TYPE (function
), args
);
12814 tmp
= build_type_variant (tmp
, TYPE_READONLY (function
),
12815 TYPE_VOLATILE (function
));
12816 tmp
= build_exception_variant (tmp
,
12817 TYPE_RAISES_EXCEPTIONS (function
));
12818 TREE_TYPE (*decl
) = tmp
;
12819 if (DECL_ARGUMENTS (*decl
))
12820 DECL_ARGUMENTS (*decl
) = TREE_CHAIN (DECL_ARGUMENTS (*decl
));
12821 DECL_STATIC_FUNCTION_P (*decl
) = 1;
12829 id_in_current_class (id
)
12832 return !!purpose_member (id
, class_binding_level
->class_shadowed
);
12839 int warn_about_return_type
;
12841 int just_assigned_this
;
12843 int temp_name_counter
;
12845 tree shadowed_labels
;
12848 rtx last_dtor_insn
;
12849 rtx last_parm_cleanup_insn
;
12850 tree base_init_list
;
12851 tree member_init_list
;
12852 tree base_init_expr
;
12853 tree current_class_ptr
;
12854 tree current_class_ref
;
12856 struct cp_function
*next
;
12857 struct binding_level
*binding_level
;
12858 int static_labelno
;
12861 static struct cp_function
*cp_function_chain
;
12863 extern int temp_name_counter
;
12865 /* Save and reinitialize the variables
12866 used during compilation of a C++ function. */
12869 push_cp_function_context (context
)
12872 struct cp_function
*p
12873 = (struct cp_function
*) xmalloc (sizeof (struct cp_function
));
12875 push_function_context_to (context
);
12877 p
->next
= cp_function_chain
;
12878 cp_function_chain
= p
;
12880 p
->named_labels
= named_labels
;
12881 p
->shadowed_labels
= shadowed_labels
;
12882 p
->returns_value
= current_function_returns_value
;
12883 p
->returns_null
= current_function_returns_null
;
12884 p
->warn_about_return_type
= warn_about_return_type
;
12885 p
->binding_level
= current_binding_level
;
12886 p
->ctor_label
= ctor_label
;
12887 p
->dtor_label
= dtor_label
;
12888 p
->last_dtor_insn
= last_dtor_insn
;
12889 p
->last_parm_cleanup_insn
= last_parm_cleanup_insn
;
12890 p
->assigns_this
= current_function_assigns_this
;
12891 p
->just_assigned_this
= current_function_just_assigned_this
;
12892 p
->parms_stored
= current_function_parms_stored
;
12893 p
->result_rtx
= original_result_rtx
;
12894 p
->base_init_expr
= base_init_expr
;
12895 p
->temp_name_counter
= temp_name_counter
;
12896 p
->base_init_list
= current_base_init_list
;
12897 p
->member_init_list
= current_member_init_list
;
12898 p
->current_class_ptr
= current_class_ptr
;
12899 p
->current_class_ref
= current_class_ref
;
12900 p
->static_labelno
= static_labelno
;
12903 /* Restore the variables used during compilation of a C++ function. */
12906 pop_cp_function_context (context
)
12909 struct cp_function
*p
= cp_function_chain
;
12912 /* Bring back all the labels that were shadowed. */
12913 for (link
= shadowed_labels
; link
; link
= TREE_CHAIN (link
))
12914 if (DECL_NAME (TREE_VALUE (link
)) != 0)
12915 SET_IDENTIFIER_LABEL_VALUE (DECL_NAME (TREE_VALUE (link
)),
12916 TREE_VALUE (link
));
12918 pop_function_context_from (context
);
12920 cp_function_chain
= p
->next
;
12922 named_labels
= p
->named_labels
;
12923 shadowed_labels
= p
->shadowed_labels
;
12924 current_function_returns_value
= p
->returns_value
;
12925 current_function_returns_null
= p
->returns_null
;
12926 warn_about_return_type
= p
->warn_about_return_type
;
12927 current_binding_level
= p
->binding_level
;
12928 ctor_label
= p
->ctor_label
;
12929 dtor_label
= p
->dtor_label
;
12930 last_dtor_insn
= p
->last_dtor_insn
;
12931 last_parm_cleanup_insn
= p
->last_parm_cleanup_insn
;
12932 current_function_assigns_this
= p
->assigns_this
;
12933 current_function_just_assigned_this
= p
->just_assigned_this
;
12934 current_function_parms_stored
= p
->parms_stored
;
12935 original_result_rtx
= p
->result_rtx
;
12936 base_init_expr
= p
->base_init_expr
;
12937 temp_name_counter
= p
->temp_name_counter
;
12938 current_base_init_list
= p
->base_init_list
;
12939 current_member_init_list
= p
->member_init_list
;
12940 current_class_ptr
= p
->current_class_ptr
;
12941 current_class_ref
= p
->current_class_ref
;
12942 static_labelno
= p
->static_labelno
;
12950 return function_depth
!= 0;
12953 /* FSF LOCAL dje prefix attributes */
12954 /* Strip attributes from SPECS_ATTRS, a list of declspecs and attributes.
12955 This function is used by the parser when a rule will accept attributes
12956 in a particular position, but we don't want to support that just yet.
12958 A warning is issued for every ignored attribute. */
12961 strip_attrs (specs_attrs
)
12966 split_specs_attrs (specs_attrs
, &specs
, &attrs
);
12970 warning ("`%s' attribute ignored",
12971 IDENTIFIER_POINTER (TREE_PURPOSE (attrs
)));
12972 attrs
= TREE_CHAIN (attrs
);
12977 /* END FSF LOCAL */